{"id":207,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/recirculation\/"},"modified":"2026-05-23T22:53:11","modified_gmt":"2026-05-23T22:53:11","slug":"recirculation","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/cs\/glossary\/recirculation\/","title":{"rendered":"Co je recirkulace? Nestabilita \u010derpadla s n\u00edzk\u00fdm pr\u016ftokem"},"content":{"rendered":"<h1>Pochopen\u00ed recirkulace v \u010derpadlech<\/h1>\n\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/cs\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/cs\/product\/balanset-1\/\" title=\"P\u0159enosn\u00fd vyva\u017eova\u010d a analyz\u00e1tor vibrac\u00ed Balanset-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Kompletn\u00ed sada p\u0159enosn\u00e9ho vyva\u017eova\u010de a analyz\u00e1toru vibrac\u00ed Balanset-1A\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/cs\/product-category\/devices\/\" rel=\"tag\">Za\u0159\u00edzen\u00ed<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/cs\/product\/balanset-1\/\" title=\"P\u0159enosn\u00fd vyva\u017eova\u010d a analyz\u00e1tor vibrac\u00ed Balanset-1A\">P\u0159enosn\u00fd vyva\u017eova\u010d a analyz\u00e1tor vibrac\u00ed Balanset-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,975.00<\/span> + DPH (pokud se uplat\u0148uje)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/cs\/wp-json\/wp\/v2\/glossary\/207?add-to-cart=986\" data-quantity=\"1\" data-product_id=\"986\" data-product_sku=\"BS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/cs\/wp-json\/wp\/v2\/glossary\/207?add-to-cart=986\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_986\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"986\" data-product_sku=\"BS-1\" aria-label=\"P\u0159idat do ko\u0161\u00edku: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_986\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/cs\/product\/vibration-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/cs\/product\/vibration-sensor\/\" title=\"Sn\u00edma\u010d vibrac\u00ed\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Sn\u00edma\u010d vibrac\u00ed Balanset-1A zbl\u00edzka\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/cs\/product-category\/parts\/\" rel=\"tag\">D\u00edly<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/cs\/product\/vibration-sensor\/\" title=\"Sn\u00edma\u010d vibrac\u00ed\">Sn\u00edma\u010d vibrac\u00ed<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>90.00<\/span> + DPH (pokud se uplat\u0148uje)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/cs\/wp-json\/wp\/v2\/glossary\/207?add-to-cart=1820\" data-quantity=\"1\" data-product_id=\"1820\" data-product_sku=\"VS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/cs\/wp-json\/wp\/v2\/glossary\/207?add-to-cart=1820\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1820\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1820\" data-product_sku=\"VS-1\" aria-label=\"P\u0159idat do ko\u0161\u00edku: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1820\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/cs\/product\/optical-sensor-for-balanset-and-arbalance\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/cs\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optick\u00fd senzor (laserov\u00fd ot\u00e1\u010dkom\u011br)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Optick\u00fd senzor (laserov\u00fd ot\u00e1\u010dkom\u011br)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/cs\/product-category\/parts\/\" rel=\"tag\">D\u00edly<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/cs\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optick\u00fd senzor (laserov\u00fd ot\u00e1\u010dkom\u011br)\">Optick\u00fd senzor (laserov\u00fd ot\u00e1\u010dkom\u011br)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + DPH (pokud se uplat\u0148uje)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/cs\/wp-json\/wp\/v2\/glossary\/207?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/cs\/wp-json\/wp\/v2\/glossary\/207?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"P\u0159idat do ko\u0161\u00edku: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/cs\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/cs\/product\/balanset-4\/\" title=\"Balanset-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Sada pro vyva\u017eov\u00e1n\u00ed rotor\u016f Vibromera: p\u0159epravn\u00ed kuf\u0159\u00edk, v\u00edcekan\u00e1lov\u00fd zesilova\u010d sign\u00e1lu, ru\u010dn\u00ed analyz\u00e1tor, magnetick\u00e1 z\u00e1kladna, vibra\u010dn\u00ed senzory a spir\u00e1lov\u00e9 kabely.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/cs\/product-category\/devices\/\" rel=\"tag\">Za\u0159\u00edzen\u00ed<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/cs\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + DPH (pokud se uplat\u0148uje)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/cs\/wp-json\/wp\/v2\/glossary\/207?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/cs\/wp-json\/wp\/v2\/glossary\/207?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"P\u0159idat do ko\u0161\u00edku: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><!-- \/.row --><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/cs\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/cs\/product\/magnet-stand\/\" title=\"Magnetick\u00fd stojan Insize-60 kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Magnetick\u00e1 z\u00e1kladna.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/cs\/product-category\/parts\/\" rel=\"tag\">D\u00edly<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/cs\/product\/magnet-stand\/\" title=\"Magnetick\u00fd stojan Insize-60 kgf\">Magnetick\u00fd stojan Insize-60 kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + DPH (pokud se uplat\u0148uje)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/cs\/wp-json\/wp\/v2\/glossary\/207?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/cs\/wp-json\/wp\/v2\/glossary\/207?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"P\u0159idat do ko\u0161\u00edku: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1852\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/cs\/product\/reflective-tape\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/cs\/product\/reflective-tape\/\" title=\"Reflexn\u00ed p\u00e1ska\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Reflexn\u00ed p\u00e1ska\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-16x12.webp 16w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/cs\/product-category\/parts\/\" rel=\"tag\">D\u00edly<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/cs\/product\/reflective-tape\/\" title=\"Reflexn\u00ed p\u00e1ska\">Reflexn\u00ed p\u00e1ska<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + DPH (pokud se uplat\u0148uje)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/cs\/wp-json\/wp\/v2\/glossary\/207?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/cs\/wp-json\/wp\/v2\/glossary\/207?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"P\u0159idat do ko\u0161\u00edku: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2329\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/cs\/product\/dynamic-balancer-balanset-1a\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/cs\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamick\u00fd vyva\u017eova\u010d &quot;Balanset-1A&quot; OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Obsah sady Balanset-1A s jednotkou rozhran\u00ed, senzory, ot\u00e1\u010dkom\u011brem a p\u0159\u00edslu\u0161enstv\u00edm\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1024x683.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1536x1024.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-2048x1366.webp 2048w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-e1732998877834.webp 708w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/cs\/product-category\/devices\/\" rel=\"tag\">Za\u0159\u00edzen\u00ed<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/cs\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamick\u00fd vyva\u017eova\u010d &quot;Balanset-1A&quot; OEM\">Dynamick\u00fd vyva\u017eova\u010d \"Balanset-1A\" OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + DPH (pokud se uplat\u0148uje)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/cs\/wp-json\/wp\/v2\/glossary\/207?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/cs\/wp-json\/wp\/v2\/glossary\/207?add-to-cart=4193\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_4193\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" aria-label=\"P\u0159idat do ko\u0161\u00edku: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_4193\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p><strong>Recirkulace<\/strong> je nestabilita proud\u011bn\u00ed, kter\u00e1 vznik\u00e1 v odst\u0159ediv\u00fdch \u010derpadlech a ventil\u00e1torech, kdy\u017e pracuj\u00ed p\u0159i pr\u016ftoc\u00edch v\u00fdrazn\u011b pod sv\u00fdm n\u00e1vrhov\u00fdm bodem \u2014 bodem nejlep\u0161\u00ed \u00fa\u010dinnosti, neboli BEP. P\u0159i n\u00edzk\u00e9m pr\u016ftoku \u010d\u00e1st kapaliny zm\u011bn\u00ed sm\u011br a proud\u00ed zp\u011bt z v\u00fdtla\u010dn\u00e9 oblasti k s\u00e1n\u00ed, \u010d\u00edm\u017e na vstupu nebo v\u00fdstupu ob\u011b\u017en\u00e9ho kola vytv\u00e1\u0159\u00ed nestabiln\u00ed recirkula\u010dn\u00ed obrazce. V\u00fdsledkem je n\u00edzkofrekven\u010dn\u00ed <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/vibration\/\">vibrace<\/a> pulzace (obvykle 0.2\u20130.8\u00d7 provozn\u00edch ot\u00e1\u010dek, a tedy <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/sub-synchronous\/\">subsynchronn\u00ed<\/a>), hluku, ztr\u00e1ty \u00fa\u010dinnosti a \u2014 v z\u00e1va\u017en\u00fdch p\u0159\u00edpadech \u2014 v\u00e1\u017en\u00e9ho mechanick\u00e9ho po\u0161kozen\u00ed zp\u016fsoben\u00e9ho cyklick\u00fdm zat\u00ed\u017een\u00edm, <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/cavitation\/\">kavitace<\/a> a p\u0159eh\u0159\u00edv\u00e1n\u00ed. Pat\u0159\u00ed k nejni\u010div\u011bj\u0161\u00edm zp\u016fsob\u016fm provozu \u010derpadla a jeho p\u0159edch\u00e1zen\u00ed je kl\u00ed\u010dov\u00fdm p\u0159edpokladem <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/centrifugal-pump-defects\/\">spolehlivost \u010derpadla<\/a>.<\/p>\n<h2>1. Definice: Hydraulick\u00e1 nestabilita p\u0159i n\u00edzk\u00e9m pr\u016ftoku<\/h2>\n<p>Ob\u011b\u017en\u00e9 kolo je navr\u017eeno tak, aby kapalina vstupovala a vystupovala z lopatek pod ur\u010dit\u00fdmi \u00fahly v bod\u011b BEP. P\u0159i \u0161krcen\u00ed pr\u016ftoku v\u00fdrazn\u011b pod tuto hodnotu troj\u00faheln\u00edky rychlost\u00ed p\u0159estanou odpov\u00eddat geometrii lopatek: \u00fahel n\u00e1b\u011bhu se v\u00fdrazn\u011b odchyluje, pr\u016ftok se od lopatek odd\u011bl\u00ed a kapalina, kter\u00e9 ob\u011b\u017en\u00e9 kolo ji\u017e dodalo energii, proud\u00ed zp\u011bt. Tyto zp\u011btn\u00e9, rotuj\u00edc\u00ed proudy p\u0159edstavuj\u00ed recirkulaci. Proto\u017ee nestacion\u00e1rn\u00ed <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/hydraulic-forces\/\">hydraulick\u00e9 s\u00edly<\/a> s\u00edly, kter\u00e9 generuj\u00ed, mohou b\u00fdt obrovsk\u00e9, m\u016f\u017ee recirkulace zp\u016fsobit selh\u00e1n\u00ed lo\u017eisek, po\u0161kozen\u00ed t\u011bsn\u011bn\u00ed, h\u0159\u00eddele <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/fatigue\/\">\u00fanava<\/a> a dokonce i struktur\u00e1ln\u00ed selh\u00e1n\u00ed samotn\u00e9ho ob\u011b\u017en\u00e9ho kola. Pochopen\u00ed a prevence tohoto jevu jsou z\u00e1sadn\u00ed pro dlouhou \u017eivotnost \u010derpadla.<\/p>\n<h2>2. Typy recirkulace<\/h2>\n<h3>Recirkulace na s\u00e1n\u00ed<\/h3>\n<p>Vyskytuje se na vstupu ob\u011b\u017en\u00e9ho kola (na sac\u00ed stran\u011b):<\/p>\n<ul>\n<li><strong>Mechanismus:<\/strong> p\u0159i n\u00edzk\u00e9m pr\u016ftoku vstupuje kapalina do oka ob\u011b\u017en\u00e9ho kola pod nevhodn\u00fdm \u00fahlem proud\u011bn\u00ed.<\/li>\n<li><strong>Odd\u011blen\u00ed:<\/strong> pr\u016ftok se odd\u011bluje od sac\u00edch ploch lopatek.<\/li>\n<li><strong>Reverse flow:<\/strong> odd\u011blen\u00e1 kapalina vytek\u00e1 zp\u011bt okem ob\u011b\u017en\u00e9ho kola.<\/li>\n<li><strong>Po\u010d\u00e1tek:<\/strong> typicky p\u0159i 60\u201370 % pr\u016ftoku v bod\u011b BEP.<\/li>\n<li><strong>Um\u00edst\u011bn\u00ed:<\/strong> soust\u0159ed\u011bna v bl\u00edzkosti kryc\u00edch disk\u016f ob\u011b\u017en\u00e9ho kola.<\/li>\n<\/ul>\n<h3>V\u00fdtla\u010dn\u00e1 recirkulace<\/h3>\n<p>Vyskytuje se na v\u00fdstupu ob\u011b\u017en\u00e9ho kola (na v\u00fdtla\u010dn\u00e9 stran\u011b):<\/p>\n<ul>\n<li><strong>Mechanismus:<\/strong> Vysokotlak\u00e1 v\u00fdtla\u010dn\u00e1 kapalina proud\u00ed zp\u011bt do obvodu ob\u011b\u017en\u00e9ho kola<\/li>\n<li><strong>Cesta:<\/strong> p\u0159es v\u016flov\u00e9 mezery, jako jsou opot\u0159ebovac\u00ed krou\u017eky a bo\u010dn\u00ed mezery.<\/li>\n<li><strong>M\u00edch\u00e1n\u00ed:<\/strong> recirkulovan\u00fd proud se m\u00eds\u00ed s hlavn\u00edm pr\u016ftokem a generuje <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/flow-turbulence\/\">turbulence<\/a>.<\/li>\n<li><strong>Po\u010d\u00e1tek:<\/strong> typicky p\u0159i 40\u201360 % pr\u016ftoku v bod\u011b BEP.<\/li>\n<li><strong>Z\u00e1va\u017enost:<\/strong> Obecn\u011b \u0161kodliv\u011bj\u0161\u00ed ne\u017e recirkulace s\u00e1n\u00edm<\/li>\n<\/ul>\n<h3>Kombinovan\u00e1 recirkulace<\/h3>\n<ul>\n<li>Sou\u010dasn\u00fd v\u00fdskyt sacn\u00ed i v\u00fdtla\u010dn\u00e9 recirkulace.<\/li>\n<li>Vyskytuje se p\u0159i velmi n\u00edzk\u00fdch pr\u016ftoc\u00edch, pod p\u0159ibli\u017en\u011b 40 % pr\u016ftoku v bod\u011b BEP.<\/li>\n<li>Zp\u016fsobuje nejintenzivn\u011bj\u0161\u00ed vibrace a nejvy\u0161\u0161\u00ed potenci\u00e1l po\u0161kozen\u00ed.<\/li>\n<li>Je t\u0159eba j\u00ed p\u0159edch\u00e1zet ochranou minim\u00e1ln\u00edho pr\u016ftoku.<\/li>\n<\/ul>\n<h2>3. Charakteristika vibrac\u00ed<\/h2>\n<h3>Charakteristick\u00fd vzorec<\/h3>\n<ul>\n<li><strong>Frekvence:<\/strong> subsynchronn\u00ed, typicky 0,2\u20130,8n\u00e1sobek provozn\u00edch ot\u00e1\u010dek.<\/li>\n<li><strong>P\u0159\u00edklad:<\/strong> \u010derpadlo s 1750 RPM vykazuj\u00edc\u00ed pulzace 10\u201320 Hz.<\/li>\n<li><strong>Amplituda:<\/strong> m\u016f\u017ee dos\u00e1hnout 2\u20135n\u00e1sobku vibrac\u00ed p\u0159i norm\u00e1ln\u00edm provozu.<\/li>\n<li><strong>Nestabiln\u00ed:<\/strong> jak frekvence, tak amplituda kol\u00edsaj\u00ed m\u00edsto toho, aby byly konstantn\u00ed.<\/li>\n<li><strong>N\u00e1hodn\u00e1 slo\u017eka:<\/strong> na vrcholu se p\u0159id\u00e1v\u00e1 \u0161irokop\u00e1smov\u00e9 zv\u00fd\u0161en\u00ed zp\u016fsoben\u00e9 turbulenc\u00ed.<\/li>\n<\/ul>\n<p>Tento nestabiln\u00ed, nesynchronn\u00ed charakter je to, co odli\u0161uje recirkulaci od ust\u00e1len\u00e9 slo\u017eky 1\u00d7 u <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/unbalance\/\">nevyv\u00e1\u017eenost<\/a> a vrcholu na frekvenci lopatek u <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/vane-passing-frequency\/\">frekvence pr\u016fchodu lopatky<\/a>; pro jeho zachycen\u00ed je obvykle nutn\u00e9 zkoumat jak <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/spectrum\/\">spektrum<\/a> a <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/time-waveform\/\">\u010dasov\u00fd pr\u016fb\u011bh<\/a>.<\/p>\n<h3>Z\u00e1vislost na pr\u016ftoku<\/h3>\n<ul>\n<li><strong>High flow:<\/strong> \u017e\u00e1dn\u00e1 recirkulace, n\u00edzk\u00e1 vibrace.<\/li>\n<li><strong>St\u0159edn\u00ed pr\u016ftok (80\u2013100 % BEP):<\/strong> minim\u00e1ln\u00ed recirkulace, p\u0159ijateln\u00e1 vibrace.<\/li>\n<li><strong>N\u00edzk\u00fd pr\u016ftok (50\u201370 % BEP):<\/strong> za\u010d\u00edn\u00e1 sac\u00ed recirkulace a vibrace roste.<\/li>\n<li><strong>Velmi n\u00edzk\u00fd pr\u016ftok (&lt; 50 % BEP):<\/strong> siln\u00e1 recirkulace a velmi vysok\u00e1 vibrace.<\/li>\n<li><strong>Vypnut\u00ed:<\/strong> maxim\u00e1ln\u00ed recirkulace, maxim\u00e1ln\u00ed vibrace a nejrychlej\u0161\u00ed rychlost po\u0161kozov\u00e1n\u00ed.<\/li>\n<\/ul>\n<h3>Dal\u0161\u00ed indik\u00e1tory<\/h3>\n<ul>\n<li>A high <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/axial-vibration\/\">axi\u00e1ln\u00ed vibrace<\/a> sou\u010d\u00e1st.<\/li>\n<li>Zv\u00fd\u0161en\u00fd hluk \u2014 hukot nebo dun\u011bn\u00ed.<\/li>\n<li>Pokles v\u00fdkonu, p\u0159i\u010dem\u017e dopravn\u00ed v\u00fd\u0161ka i pr\u016ftok klesaj\u00ed pod k\u0159ivku.<\/li>\n<li>N\u00e1r\u016fst teploty zp\u016fsoben\u00fd hydraulick\u00fdmi ztr\u00e1tami odv\u00e1d\u011bn\u00fdmi do kapaliny.<\/li>\n<\/ul>\n<h2>4. N\u00e1sledky a po\u0161kozen\u00ed<\/h2>\n<h3>Okam\u017eit\u00e9 \u00fa\u010dinky<\/h3>\n<ul>\n<li><strong>Siln\u00e9 vibrace:<\/strong> m\u016f\u017ee p\u0159ekro\u010dit alarmn\u00ed limity b\u011bhem n\u011bkolika minut.<\/li>\n<li><strong>Hluk:<\/strong> hlu\u010dn\u00fd, turbulentn\u00ed hukot.<\/li>\n<li><strong>Ztr\u00e1ta \u00fa\u010dinnosti:<\/strong> vysok\u00e1 spot\u0159eba energie vzhledem ke skute\u010dn\u011b dod\u00e1van\u00e9mu pr\u016ftoku.<\/li>\n<li><strong>Zah\u0159\u00edv\u00e1n\u00ed:<\/strong> hydraulick\u00e9 ztr\u00e1ty p\u0159em\u011bn\u011bn\u00e9 v teplo ve sk\u0159\u00edni \u010derpadla.<\/li>\n<\/ul>\n<h3>Mechanick\u00e9 po\u0161kozen\u00ed<\/h3>\n<ul>\n<li><strong>Porucha lo\u017eiska:<\/strong> vysok\u00e9 cyklick\u00e9 zat\u00ed\u017een\u00ed urychluje opot\u0159eben\u00ed lo\u017eisek <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/bearing-wear\/\">opot\u0159eben\u00ed<\/a>.<\/li>\n<li><strong>Po\u0161kozen\u00ed t\u011bsn\u011bn\u00ed:<\/strong> vibrace a tlakov\u00e9 pulzace po\u0161kozuj\u00ed <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/seal-defects\/\">mechanick\u00e9 ucp\u00e1vky<\/a>.<\/li>\n<li><strong>Shaft fatigue:<\/strong> st\u0159\u00eddav\u00e9 ohybov\u00e9 nap\u011bt\u00ed zp\u016fsoben\u00e9 nestacion\u00e1rn\u00edmi hydraulick\u00fdmi silami.<\/li>\n<li><strong>Po\u0161kozen\u00ed ob\u011b\u017en\u00e9ho kola:<\/strong> vane <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/impeller-defects\/\">\u00fanavov\u00e9 trhliny<\/a> zp\u016fsoben\u00e9 cyklick\u00fdm zat\u00ed\u017een\u00edm.<\/li>\n<\/ul>\n<h3>Hydraulick\u00e9 po\u0161kozen\u00ed<\/h3>\n<ul>\n<li><strong>Kavitace:<\/strong> oblasti zp\u011btn\u00e9ho proud\u011bn\u00ed jsou n\u00e1chyln\u00e9 ke kavitaci, proto\u017ee m\u00edstn\u00ed tlak kles\u00e1 pod tlak par.<\/li>\n<li><strong>Eroze:<\/strong> vysokorychlostn\u00ed recirkuluj\u00edc\u00ed proud\u011bn\u00ed eroduje povrchy.<\/li>\n<li><strong>V\u00edrov\u00e1 kavitace:<\/strong> v\u00edry v oblastech zp\u011btn\u00e9ho proud\u011bn\u00ed kavituj\u00ed ve sv\u00fdch n\u00edzkotlak\u00fdch j\u00e1drech.<\/li>\n<\/ul>\n<h2>5. Detekce a diagnostika<\/h2>\n<h3>Anal\u00fdza vibrac\u00ed<\/h3>\n<ul>\n<li>Hledejte subsynchronn\u00ed slo\u017eky v p\u00e1smu 0,2\u20130,8\u00d7.<\/li>\n<li>Prov\u00e1d\u011bjte zkou\u0161ky p\u0159i r\u016fzn\u00fdch pr\u016ftoc\u00edch, abyste zmapovali chov\u00e1n\u00ed \u010derpadla.<\/li>\n<li>Ur\u010dete pr\u016ftok, p\u0159i n\u011bm\u017e pulzace za\u010d\u00ednaj\u00ed \u2014 bod n\u00e1stupu zp\u011btn\u00e9ho proud\u011bn\u00ed.<\/li>\n<li>Porovnejte v\u00fdsledky s p\u0159edpov\u011b\u010fmi charakteristiky \u010derpadla.<\/li>\n<\/ul>\n<h3>Testov\u00e1n\u00ed v\u00fdkonu<\/h3>\n<ul>\n<li>Zm\u011b\u0159te skute\u010dnou k\u0159ivku tlak\u2013pr\u016ftok.<\/li>\n<li>Porovnejte ji s n\u00e1vrhovou k\u0159ivkou.<\/li>\n<li>Odchylka p\u0159i n\u00edzk\u00e9m pr\u016ftoku signalizuje recirkulaci.<\/li>\n<li>Vy\u0161\u0161\u00ed spot\u0159eba energie, ne\u017e k\u0159ivka p\u0159edpov\u00edd\u00e1, je potvrzuj\u00edc\u00edm d\u016fkazem.<\/li>\n<\/ul>\n<h3>Akustick\u00e9 monitorov\u00e1n\u00ed<\/h3>\n<ul>\n<li>Charakteristick\u00fd zvuk turbulentn\u00edho hukotu.<\/li>\n<li>\u0160irokop\u00e1smov\u00e9 zv\u00fd\u0161en\u00ed hluku.<\/li>\n<li>\u010casto sly\u0161iteln\u00e9 a hmatateln\u00e9 na sk\u0159\u00edni \u010derpadla.<\/li>\n<\/ul>\n<h2>6. Prevence a zm\u00edrn\u011bn\u00ed dopad\u016f<\/h2>\n<h3>Provozn\u00ed strategie<\/h3>\n<h4>Ochrana minim\u00e1ln\u00edho pr\u016ftoku<\/h4>\n<ul>\n<li>Instalujte automatickou recirkula\u010dn\u00ed linku minim\u00e1ln\u00edho pr\u016ftoku.<\/li>\n<li>Ventil se otev\u0159e v\u017edy, kdy\u017e pr\u016ftok klesne pod bezpe\u010dn\u00e9 minimum (obvykle 60\u201370 % BEP).<\/li>\n<li>P\u0159iv\u00e1d\u00ed v\u00fdtlak zp\u011bt do s\u00e1n\u00ed nebo do n\u00e1dr\u017ee.<\/li>\n<li>T\u00edm se \u010derpadlo udr\u017euje mimo oblast zp\u011btn\u00e9ho proud\u011bn\u00ed.<\/li>\n<\/ul>\n<h4>\u0158\u00edzen\u00ed provozn\u00edho bodu<\/h4>\n<ul>\n<li>Nevystavujte \u010derpadlo provozu pod minim\u00e1ln\u00edm trval\u00fdm stabiln\u00edm pr\u016ftokem.<\/li>\n<li>Pou\u017eijte frekven\u010dn\u00ed m\u011bni\u010d k p\u0159izp\u016fsoben\u00ed \u010derpadla po\u017eadavk\u016fm, p\u0159i\u010dem\u017e vyu\u017eijte <a href=\"https:\/\/vibromera.eu\/cs\/calculators\/affinity-laws-calculator\/\">affinity laws<\/a> k udr\u017een\u00ed BEP v cel\u00e9m rozsahu provozn\u00edch podm\u00ednek.<\/li>\n<li>Up\u0159ednostn\u011bte n\u011bkolik men\u0161\u00edch \u010derpadel p\u0159ed jedn\u00edm velk\u00fdm pro lep\u0161\u00ed regulaci pr\u016ftoku.<\/li>\n<li>Zap\u00ednejte a vyp\u00ednejte paraleln\u00ed \u010derpadla podle zm\u011bn po\u017eadavk\u016f.<\/li>\n<\/ul>\n<h3>Konstruk\u010dn\u00ed \u0159e\u0161en\u00ed<\/h3>\n<ul>\n<li><strong>Induktor:<\/strong> axi\u00e1ln\u00ed vstupn\u00ed stupe\u0148 ke stabilizaci sac\u00edho proud\u011bn\u00ed.<\/li>\n<li><strong>Ob\u011b\u017en\u00e1 kola pro n\u00edzk\u00fd pr\u016ftok:<\/strong> speci\u00e1ln\u00ed konstrukce ur\u010den\u00e9 pro provoz s n\u00edzk\u00fdm pr\u016ftokem.<\/li>\n<li><strong>Proper sizing:<\/strong> \u010derpadlo nep\u0159edimenzov\u00e1vejte, jinak bude trvale pracovat p\u0159i n\u00edzk\u00e9m pr\u016ftoku.<\/li>\n<li><strong>\u0160ir\u0161\u00ed provozn\u00ed rozsah:<\/strong> vyb\u00edrejte \u010derpadla s ploch\u00fdmi charakteristikami, kter\u00e1 sn\u00e1\u0161\u00ed kol\u00eds\u00e1n\u00ed pr\u016ftoku.<\/li>\n<\/ul>\n<h3>N\u00e1vrh syst\u00e9mu<\/h3>\n<ul>\n<li>Navrhn\u011bte syst\u00e9m tak, aby \u010derpadlo pracovalo v bl\u00edzkosti BEP.<\/li>\n<li>Zajist\u011bte dostate\u010dnou rezervu NPSH k omezen\u00ed kavitace v recirkula\u010dn\u00edch z\u00f3n\u00e1ch.<\/li>\n<li>Um\u00edst\u011bte regula\u010dn\u00ed ventily tak, aby se minimalizovalo \u0161krcen\u00ed na sac\u00ed stran\u011b.<\/li>\n<li>Zahr\u0148te obtokov\u00e9 nebo recirkula\u010dn\u00ed syst\u00e9my k zaji\u0161t\u011bn\u00ed minim\u00e1ln\u00edho pr\u016ftoku.<\/li>\n<\/ul>\n<h2>7. Pr\u016fmyslov\u00e9 normy a sm\u011brnice<\/h2>\n<h3>Minim\u00e1ln\u00ed nep\u0159etr\u017eit\u00fd pr\u016ftok<\/h3>\n<ul>\n<li><strong>API 610:<\/strong> Specifikuje minim\u00e1ln\u00ed trval\u00fd stabiln\u00ed pr\u016ftok pro odst\u0159ediv\u00e1 \u010derpadla<\/li>\n<li><strong>Typick\u00e9 hodnoty:<\/strong> 60\u201370 % pr\u016ftoku BEP pro radi\u00e1ln\u00ed \u010derpadla, 70\u201380 % pro diagon\u00e1ln\u00ed proveden\u00ed.<\/li>\n<li><strong>Tepeln\u00e9 hledisko:<\/strong> minim\u00e1ln\u00ed pr\u016ftok je rovn\u011b\u017e omezen teplotn\u00edm n\u00e1r\u016fstem, kter\u00fd je kapalina p\u0159i n\u00edzk\u00e9m pr\u016ftoku schopna sn\u00e9st.<\/li>\n<\/ul>\n<h3>Testov\u00e1n\u00ed v\u00fdkonu<\/h3>\n<ul>\n<li>Tov\u00e1rn\u00ed zkou\u0161ky ov\u011b\u0159uj\u00ed bod vzniku recirkulace.<\/li>\n<li>Provozn\u00ed v\u00fdkonnostn\u00ed zkou\u0161ky jej potvrzuj\u00ed v instalovan\u00e9m syst\u00e9mu.<\/li>\n<li>P\u0159ej\u00edmac\u00ed krit\u00e9ria stanovuj\u00ed p\u0159\u00edpustn\u00e9 vibrace p\u0159i minim\u00e1ln\u00edm pr\u016ftoku, p\u0159i\u010dem\u017e jsou \u010dasto vzta\u017eena k <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/iso-20816-1\/\">ISO 20816<\/a> z\u00f3ny z\u00e1va\u017enosti vibrac\u00ed.<\/li>\n<\/ul>\n<p>Proto\u017ee recirkulace, nevyv\u00e1\u017eenost, pr\u016fchod lopatkou a kavitace mohou spole\u010dn\u011b zvy\u0161ovat vibrace \u010derpadla, praktick\u00fdm diagnostick\u00fdm postupem je m\u011b\u0159en\u00ed spektra p\u0159i n\u011bkolika pr\u016ftoc\u00edch a sledov\u00e1n\u00ed, kter\u00e1 slo\u017eka se m\u011bn\u00ed se pr\u016ftokem. P\u0159enosn\u00fd dvoukan\u00e1lov\u00fd analyz\u00e1tor, jako je <a href=\"https:\/\/vibromera.eu\/cs\/produkt\/balanset-1\/\">Balanset-1A<\/a> zachycuje subsynchonn\u00ed pulzaci a jej\u00ed z\u00e1vislost na pr\u016ftoku p\u0159\u00edmo na \u010derpadle, \u010d\u00edm\u017e pom\u00e1h\u00e1 potvrdit recirkulaci sp\u00ed\u0161e ne\u017e z\u00e1vadu rotoru \u2014 a v p\u0159\u00edpad\u011b, kdy se zv\u00fd\u0161en\u00e1 vibrace uk\u00e1\u017ee jako 1\u00d7 <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/unbalance\/\">nevyv\u00e1\u017eenost<\/a> v ob\u011b\u017en\u00e9m kole, umo\u017e\u0148uje technikovi vyv\u00e1\u017eit ho na m\u00edst\u011b bez demont\u00e1\u017ee \u010derpadla. Chcete-li p\u0159ed zah\u00e1jen\u00edm ohrani\u010dit p\u0159\u00edslu\u0161n\u00e1 frekven\u010dn\u00ed p\u00e1sma, pou\u017eijte <a href=\"https:\/\/vibromera.eu\/cs\/calculators\/pump-cavitation-frequency\/\">kalkul\u00e1tor frekvence kavitace \u010derpadla<\/a> a <a href=\"https:\/\/vibromera.eu\/cs\/calculators\/blade-pass-frequency\/\">kalkul\u00e1tor pr\u016fchodov\u00e9 frekvence lopatek<\/a> vyzna\u010dte, kde by se m\u011bly objevit \u0161pi\u010dky kavita\u010dn\u00edho hluku a pr\u016fchodu lopatek, tak\u017ee putuj\u00edc\u00ed subsynchonn\u00ed p\u00e1smo recirkulace bude jasn\u011b patrn\u00e9.<\/p>\n<p>Recirkulace pat\u0159\u00ed k nejz\u00e1va\u017en\u011bj\u0161\u00edm provozn\u00edm podm\u00ednk\u00e1m, kter\u00e9 m\u016f\u017ee odst\u0159ediv\u00e9 \u010derpadlo za\u017e\u00edt. Jej\u00ed charakteristick\u00fd subsynchonn\u00ed vibra\u010dn\u00ed projev, velk\u00e9 amplitudy pulzac\u00ed a schopnost zp\u016fsobit rychl\u00e9 mechanick\u00e9 po\u0161kozen\u00ed z n\u00ed d\u011blaj\u00ed jev, jeho\u017e podm\u00ednk\u00e1m vzniku je nezbytn\u00e9 rozum\u011bt, aby bylo mo\u017en\u00e9 instalovat ochranu minim\u00e1ln\u00edho pr\u016ftoku a p\u0159edch\u00e1zet chronick\u00e9mu provozu p\u0159i n\u00edzk\u00e9m pr\u016ftoku \u2014 to jsou kl\u00ed\u010de k spolehlivosti a \u017eivotnosti \u010derpadla v pr\u016fmyslov\u00e9m provozu.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/cs\/glossary\/\">\u2190 Zp\u011bt na hlavn\u00ed index<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Zjist\u011bte v\u00edce o recirkulaci v \u010derpadlech, obr\u00e1cen\u00ed proud\u011bn\u00ed a nestabilit\u011b p\u0159i n\u00edzk\u00fdch pr\u016ftoc\u00edch, kter\u00e1 zp\u016fsobuje subsynchronn\u00ed vibra\u010dn\u00ed pulzace, ztr\u00e1tu \u00fa\u010dinnosti a potenci\u00e1ln\u00ed po\u0161kozen\u00ed.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-207","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/glossary\/207","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/glossary\/207\/revisions"}],"predecessor-version":[{"id":101401,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/glossary\/207\/revisions\/101401"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/media?parent=207"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/categories?post=207"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/tags?post=207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}