{"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\/bs\/glossary\/recirculation\/","title":{"rendered":"\u0160to je cirkulacija? Nestabilnost pumpe pri niskom protoku"},"content":{"rendered":"<h1>Razumijevanje cirkulacije u pumpama<\/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\/bs\/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\/bs\/product\/balanset-1\/\" title=\"Prijenosni balanser i analizator vibracija 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=\"Balanset-1A kompletan set prenosivi balanser i analizator vibracija\" 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\/bs\/product-category\/devices\/\" rel=\"tag\">Ure\u0111aji<\/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\/bs\/product\/balanset-1\/\" title=\"Prijenosni balanser i analizator vibracija Balanset-1A\">Prijenosni balanser i analizator vibracija 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> + PDV (ako se primjenjuje)<\/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=\"\/bs\/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=\"Dodaj u korpu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u korpu\" 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=\"\/bs\/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=\"Add to cart: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u korpu<\/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\/bs\/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\/bs\/product\/vibration-sensor\/\" title=\"Senzor vibracija\">\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=\"Balanset-1A senzor vibracija u detaljnom prikazu\" 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\/bs\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/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\/bs\/product\/vibration-sensor\/\" title=\"Senzor vibracija\">Senzor vibracija<\/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> + PDV (ako se primjenjuje)<\/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=\"\/bs\/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=\"Dodaj u korpu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u korpu\" 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=\"\/bs\/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=\"Add to cart: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u korpu<\/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\/bs\/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\/bs\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"opti\u010dki senzor (laserski tahometar)\">\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=\"opti\u010dki senzor (laserski tahometar)\" 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\/bs\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/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\/bs\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"opti\u010dki senzor (laserski tahometar)\">opti\u010dki senzor (laserski tahometar)<\/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> + PDV (ako se primjenjuje)<\/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=\"\/bs\/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=\"Dodaj u korpu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u korpu\" 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=\"\/bs\/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=\"Add to cart: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u korpu<\/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\/bs\/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\/bs\/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=\"Vibromera set za balansiranje rotora: kofer za no\u0161enje, multikanalnu jedinicu za kondicioniranje signala, ru\u010dni analizator, magnetnu bazu, senzore vibracija i spiralne kablove.\" 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\/bs\/product-category\/devices\/\" rel=\"tag\">Ure\u0111aji<\/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\/bs\/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> + PDV (ako se primjenjuje)<\/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=\"\/bs\/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=\"Dodaj u korpu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u korpu\" 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=\"\/bs\/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=\"Add to cart: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u korpu<\/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\/bs\/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\/bs\/product\/magnet-stand\/\" title=\"Magnetno postolje 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=\"Magnet base.\" 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\/bs\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/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\/bs\/product\/magnet-stand\/\" title=\"Magnetno postolje Insize-60-kgf\">Magnetno postolje 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> + PDV (ako se primjenjuje)<\/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=\"\/bs\/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=\"Dodaj u korpu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u korpu\" 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=\"\/bs\/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=\"Add to cart: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u korpu<\/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\/bs\/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\/bs\/product\/reflective-tape\/\" title=\"Reflektiraju\u0107a traka\">\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=\"Reflektiraju\u0107a traka\" 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\/bs\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/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\/bs\/product\/reflective-tape\/\" title=\"Reflektiraju\u0107a traka\">Reflektiraju\u0107a traka<\/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> + PDV (ako se primjenjuje)<\/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=\"\/bs\/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=\"Dodaj u korpu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u korpu\" 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=\"\/bs\/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=\"Add to cart: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u korpu<\/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\/bs\/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\/bs\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinami\u010dki balanser \u201cBalanset-1A\u201d 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=\"Balanset-1A sadr\u017eaj seta sa interfejsnom jedinicom, senzorima, tahometrom i dodatnom opremom\" 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\/bs\/product-category\/devices\/\" rel=\"tag\">Ure\u0111aji<\/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\/bs\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinami\u010dki balanser \u201cBalanset-1A\u201d OEM\">Dinami\u010dki balanser \u201cBalanset-1A\u201d 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> + PDV (ako se primjenjuje)<\/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=\"\/bs\/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=\"Dodaj u korpu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u korpu\" 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=\"\/bs\/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=\"Add to cart: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u korpu<\/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>Recirculation<\/strong> je nestabilnost protoka koja se razvija u centrifugalnim pumpama i ventilatorima kada se pogone pri brzinama protoka dobro ispod njihove to\u010dke projektiranja \u2014 najbolje to\u010dke u\u010dinkovitosti, ili BEP. Pri niskom protoku, dio fluida mijenja smjer, struje unazad iz regije pra\u017enjenja prema usisavanju i tvore\u0107i nestabilne obrnutoe kru\u017ene obrasce na ulaznoj ili izlaznoj strani rotora. Rezultat je niskofrekventna <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/vibration\/\">vibration<\/a> pulsacija (obi\u010dno 0,2\u20130,8\u00d7 radne brzine i stoga <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/sub-synchronous\/\">sub-synchronous<\/a>), buka, gubitak u\u010dinkovitosti, i \u2014 u te\u0161kim slu\u010dajevima \u2014 ozbiljna mehani\u010dka o\u0161te\u0107enja od cikli\u010dkog optere\u0107enja, <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/cavitation\/\">cavitation<\/a> i zagrijavanje. Nalazi se me\u0111u najdestruktivnijim na\u010dinima rada pumpe, i izbjegavanje toga je temeljno za <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/centrifugal-pump-defects\/\">pouzdanost crpke<\/a>.<\/p>\n<h2>1. Definicija: nestabilnost hidraulike pri niskom protoku<\/h2>\n<p>Impeler je dizajniran tako da fluid ulazi i izlazi iz njegovih lopatica pod specifi\u010dnim uglovima na BEP-u. Ako smanji protok zna\u010dajno ispod tog nivoa, trokuti brzine se vi\u0161e ne poklapaju sa geometrijom lopatica: upadni ugao je sada pogre\u0161an, tok se odvaja od lopatica, i fluid koji je impeler ve\u0107 ubrzao te\u010de unazad. Ove reverzne, vrtlo\u017ene struje su recirkulacija. Jer nestabilnost <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/hydraulic-forces\/\">hidrauli\u010dke sile<\/a> koju generi\u0161u mo\u017ee biti ogromna, recirkulacija mo\u017ee izazvati otkaze le\u017eajeva, o\u0161te\u0107enje brtvi, otkaz vratila <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/fatigue\/\">fatigue<\/a> i \u010dak do strukturnog otkaza samog impelera. Razumevanje i spre\u010davanje toga je kriti\u010dno za trajnost crpke.<\/p>\n<h2>2. Vrste recirkulacije<\/h2>\n<h3>Recirkulacija usisavanja<\/h3>\n<p>Javlja se na usisu impelera (strani usisavanja):<\/p>\n<ul>\n<li><strong>Mechanism:<\/strong> pri niskom protoku, fluid koji ulazi u oko impelera dolazi pod pogre\u0161nim uglom toka.<\/li>\n<li><strong>Separation:<\/strong> tok se odvaja od usisnih povr\u0161ina lopatica.<\/li>\n<li><strong>Reverse flow:<\/strong> odvojeni fluid se ispu\u0161ta unazad iz oka impelera.<\/li>\n<li><strong>Onset:<\/strong> tipi\u010dno pri 60\u201370% BEP protoka.<\/li>\n<li><strong>Location:<\/strong> koncentrisano blizu pokrova impelera.<\/li>\n<\/ul>\n<h3>Recirkulacija pra\u017enjenja<\/h3>\n<p>Javlja se na pra\u017enjenju impelera (izlaz):<\/p>\n<ul>\n<li><strong>Mechanism:<\/strong> fluid viskog pritiska sa pra\u017enjenja te\u010de unazad u periferiju impelera.<\/li>\n<li><strong>Path:<\/strong> kroz zazore kao \u0161to su prsteni tro\u0161enja i bo\u010dni zazori.<\/li>\n<li><strong>Mixing:<\/strong> recirkulirani tok se me\u0161a sa glavnim tokom, generiraju\u0107i <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/flow-turbulence\/\">turbulence<\/a>.<\/li>\n<li><strong>Onset:<\/strong> tipi\u010dno pri 40\u201360% BEP protoka.<\/li>\n<li><strong>Severity:<\/strong> obi\u010dno \u0161tetnija od recirkulacije usisavanja.<\/li>\n<\/ul>\n<h3>Kombinirana Recirkulacija<\/h3>\n<ul>\n<li>Istovremeno prisutna recirkulacija na usisnoj i pra\u017enjenju.<\/li>\n<li>Javlja se pri vrlo malim protocima, ispod pribli\u017eno 40% BEP-a.<\/li>\n<li>Proizvodi najte\u017eu vibraciju i najve\u0107u mogu\u0107nost o\u0161te\u0107enja.<\/li>\n<li>Trebala bi biti izbjegnuta kroz za\u0161titu minimalnog protoka.<\/li>\n<\/ul>\n<h2>3. VibracijskuSignatura<\/h2>\n<h3>Karakteristi\u010dni Obrazac<\/h3>\n<ul>\n<li><strong>Frequency:<\/strong> sub-sinhron, tipi\u010dno 0,2\u20130,8\u00d7 brzine vrtnje.<\/li>\n<li><strong>Example:<\/strong> pumpa od 1750 RPM sa pulsacijama od 10\u201320 Hz.<\/li>\n<li><strong>Amplitude:<\/strong> mo\u017ee dosegnuti 2\u20135\u00d7 normalnu vibraciju pri radu.<\/li>\n<li><strong>Unstable:<\/strong> i frekvencija i amplituda lutaju umjesto da ostanu konstantne.<\/li>\n<li><strong>Slu\u010dajna komponenta:<\/strong> poja\u010danje u rasponu od turbulencije nalazi se na vrhu.<\/li>\n<\/ul>\n<p>Ovo lutanje, ne-sinhron karakter je ono \u0161to razlikuje recirkulaciju od stabilnog 1\u00d7 od <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/unbalance\/\">unbalance<\/a> i vrh brzine lopatica od <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/vane-passing-frequency\/\">frekvencija prolaska lopatice<\/a>; hvatanje obi\u010dno zahtijeva ispitivanje oba <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/spectrum\/\">spectrum<\/a> and the <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/time-waveform\/\">time waveform<\/a>.<\/p>\n<h3>Ovisnost o Protoku<\/h3>\n<ul>\n<li><strong>High flow:<\/strong> nema recirkulacije, niska vibracija.<\/li>\n<li><strong>Umjeren protok (80\u2013100% BEP):<\/strong> minimalna recirkulacija, prihvatljiva vibracija.<\/li>\n<li><strong>Nizak protok (50\u201370% BEP):<\/strong> zapo\u010dinje recirkulacija usisavanja i vibracije se pove\u0107avaju.<\/li>\n<li><strong>Vrlo mali protok (&lt; 50% BEP):<\/strong> te\u0161ka recirkulacija i vrlo visoke vibracije.<\/li>\n<li><strong>Shutoff:<\/strong> maksimalna recirkulacija, maksimalne vibracije i najbr\u017ea stopa o\u0161te\u0107enja.<\/li>\n<\/ul>\n<h3>Dodatni pokazatelji<\/h3>\n<ul>\n<li>A high <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/axial-vibration\/\">aksijalnom vibracijom<\/a> component.<\/li>\n<li>Pove\u0107ana buka \u2014 urlik ili tutnjava.<\/li>\n<li>Gubitak performansi, glava i protok padaju ispod krive.<\/li>\n<li>Porast temperature od hidrauli\u010dnih gubitaka koji se osloba\u0111aju u fluidu.<\/li>\n<\/ul>\n<h2>4. Posljedice i o\u0161te\u0107enja<\/h2>\n<h3>Neposredni u\u010dinci<\/h3>\n<ul>\n<li><strong>Te\u0161ke vibracije:<\/strong> can breach alarm limits within minutes.<\/li>\n<li><strong>Noise:<\/strong> glasan, turbulentno urlanje.<\/li>\n<li><strong>Gubitak efikasnosti:<\/strong> visoka potro\u0161nja snage za stvarno isporu\u010deni protok.<\/li>\n<li><strong>Heating:<\/strong> hidrauli\u010dni gubici pretvoreni u toplinu u ku\u010di\u0161tu.<\/li>\n<\/ul>\n<h3>Mehani\u010dko o\u0161te\u0107enje<\/h3>\n<ul>\n<li><strong>Otkaz le\u017eaja:<\/strong> visoka cikli\u010dna optere\u0107enja ubrzavaju le\u017eaj <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/bearing-wear\/\">wear<\/a>.<\/li>\n<li><strong>Seal damage:<\/strong> vibracije i pulsacije tlaka uni\u0161tavaju <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/seal-defects\/\">mehani\u010dke brtve<\/a>.<\/li>\n<li><strong>Shaft fatigue:<\/strong> naizmjeni\u010dni naprezanje savijanja od nestabilnih hidrauli\u010dnih sila.<\/li>\n<li><strong>O\u0161te\u0107enje impelera:<\/strong> vane <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/impeller-defects\/\">pukotine od zamaranja<\/a> od cikli\u010dnog optere\u0107enja.<\/li>\n<\/ul>\n<h3>Hidrauli\u010dka o\u0161te\u0107enja<\/h3>\n<ul>\n<li><strong>Cavitation:<\/strong> zone recirkulacije su sklone kavitaciji kada lokalni pritisak padne ispod pritiska isparavanja.<\/li>\n<li><strong>Erosion:<\/strong> recirkuliraju\u0107i tok visoke brzine erodira povr\u0161ine.<\/li>\n<li><strong>Kavitacija vrtloga:<\/strong> vrtlozi unutar zona recirkulacije kavitiraju u svojim jezgrima niskog pritiska.<\/li>\n<\/ul>\n<h2>5. Detekcija i dijagnoza<\/h2>\n<h3>Analiza vibracija<\/h3>\n<ul>\n<li>Potra\u017eite subsinhrone komponente u opsegu 0,2\u20130,8\u00d7.<\/li>\n<li>Testirajte na nekoliko protoka kako biste mapirali pona\u0161anje.<\/li>\n<li>Odredite protok pri kojem po\u010dinju pulsacije \u2014 po\u010detak recirkulacije.<\/li>\n<li>Uporedite nalaze sa predvi\u0111anjima iz krive performansi pumpe&#8217;s.<\/li>\n<\/ul>\n<h3>Testiranje Performansi<\/h3>\n<ul>\n<li>Izmjerite stvarnu krivu napor\u2013protok.<\/li>\n<li>Uporedite je sa krivom dizajna.<\/li>\n<li>Odstupanje pri malom protoku signalizira recirkulaciju.<\/li>\n<li>Potro\u0161nja energije vi\u0161a nego \u0161to kriva predvi\u0111a jeste potvr\u0111uju\u0107i dokaz.<\/li>\n<\/ul>\n<h3>Akusti\u010dki nadzor<\/h3>\n<ul>\n<li>Karakteristi\u010dan turbulentno burljav zvuk.<\/li>\n<li>Porast \u0161uma u cijelom spektru.<\/li>\n<li>\u010cesto \u010dujan i osjetljiv na ku\u0107ici pumpe.<\/li>\n<\/ul>\n<h2>6. Prevencija i ubla\u017eavanje<\/h2>\n<h3>Strategije rada<\/h3>\n<h4>Za\u0161tita minimalne protoke<\/h4>\n<ul>\n<li>Instalirajte automatsku liniju recirkulacije sa minimalnom protokom.<\/li>\n<li>Ventil se otvara kad god protok padne ispod sigurnog minimuma (obi\u010dno 60\u201370% od BEP).<\/li>\n<li>Recirkulira pritisak natrag u usisavanje ili u rezervoar.<\/li>\n<li>To odr\u017eava pumpu van zone recirkulacije.<\/li>\n<\/ul>\n<h4>Kontrola radne to\u010dke<\/h4>\n<ul>\n<li>Izbjegavajte rad ispod minimalne kontinuirane stabilne protoke.<\/li>\n<li>Koristite pogon sa promjenljivom brzinom kako biste uskla\u0111ivali pumpu sa potra\u017enjom, koriste\u0107i <a href=\"https:\/\/vibromera.eu\/bs\/calculators\/affinity-laws-calculator\/\">affinity laws<\/a> kako biste vodili BEP kroz niz razli\u010ditih optere\u0107enja.<\/li>\n<li>Preferujte nekoliko manjih pumpi umjesto jedne velike pumpe za bolji turndown.<\/li>\n<li>Stupnjevite paralelne pumpe uklju\u010divanjem i isklju\u010divanjem kako se potra\u017enja mijenja.<\/li>\n<\/ul>\n<h3>Rje\u0161enja u dizajnu<\/h3>\n<ul>\n<li><strong>Inducer:<\/strong> aksialnu ususnu stepenicu kako biste stabilizirali tok usisa.<\/li>\n<li><strong>Rotori za nisku protoku:<\/strong> specijalni dizajni namijenjeni za rad sa nskom protokom.<\/li>\n<li><strong>Proper sizing:<\/strong> nemojte prekora\u010diti veli\u010dinu pumpe, \u0161to forsira kroni\u010dni rad sa niskom protokom.<\/li>\n<li><strong>\u0160iri raspon rada:<\/strong> odaberite pumpe sa ravnim karakteristikama koje toleriraju varijacije protoka.<\/li>\n<\/ul>\n<h3>System Design<\/h3>\n<ul>\n<li>Projektuirajte sistem tako da pumpa radi blizu BEP.<\/li>\n<li>Obezbijedite odgovaraju\u0107u NPSH mar\u017eu da ograni\u010dite kavitaciju u zonama recirkulacije.<\/li>\n<li>Pozicionirajte kontrolne ventile kako biste minimizirali gu\u0161enje u usisu.<\/li>\n<li>Uklju\u010dite sisteme zaobilaznice ili recirkulacije kako biste osigurali minimalan protok.<\/li>\n<\/ul>\n<h2>7. Industrijski standardi i smjernice<\/h2>\n<h3>Minimalan kontinuirani protok<\/h3>\n<ul>\n<li><strong>API 610:<\/strong> specificira minimalan kontinuirani stabilan protok za centrifugalne pumpe.<\/li>\n<li><strong>Tipi\u010dne vrijednosti:<\/strong> 60\u201370% BEP-protoka za radijalne pumpe, 70\u201380% za mije\u0161ovite dizajne.<\/li>\n<li><strong>Toplinska razmatranja:<\/strong> minimalan protok je tako\u0111er ograni\u010den pove\u0107anjem temperature koju fluid mo\u017ee podnijeti pri malom protoku.<\/li>\n<\/ul>\n<h3>Testiranje Performansi<\/h3>\n<ul>\n<li>Tvorni\u010dke probe verifikuju to\u010dku po\u010detka recirkulacije.<\/li>\n<li>Testovi performansi na terenu potvr\u0111uju je u instaliranom sistemu.<\/li>\n<li>Kriteriji prihvatanja specificiraju dozvoljenu vibraciju pri minimalnom protoku, \u010desto referencirane na <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/iso-20816-1\/\">ISO 20816<\/a> zone ozbiljnosti.<\/li>\n<\/ul>\n<p>Po\u0161to recirkulacija, nebalansirananje, efekti prolaza lopatica i kavitacija mogu svi pove\u0107ati vibraciju pumpe, prakti\u010dni dijagnosti\u010dki korak je mjerenje spektra pri nekoliko protoka i vidjeti koji se komponenti prate protok. Prijenosni analizator od dva kanala kao \u0161to je <a href=\"https:\/\/vibromera.eu\/bs\/proizvod\/balanset-1\/\">Balanset-1A<\/a> hvata subharmonijsku pulsaciju i njezinu ovisnost o protoku direktno na pumpi, \u0161to poma\u017ee potvrditi recirkulaciju umjesto kvara rotora \u2014 i, gdje se pokazala pove\u0107ana vibracija biti 1\u00d7 u impeleru, omogu\u0107ava tehni\u010dno osobu da ga uravnote\u017ei na mjestu bez demonta\u017ee pumpe. <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/unbalance\/\">unbalance<\/a> Za odre\u0111ivanje relevantnih frekvencija prije nego \u0161to po\u010dnete, <a href=\"https:\/\/vibromera.eu\/bs\/calculators\/pump-cavitation-frequency\/\">kalkulator frekvencije kavitacije pumpe<\/a> and a <a href=\"https:\/\/vibromera.eu\/bs\/calculators\/blade-pass-frequency\/\">kalkulator frekvencije prolaza lopatica<\/a> ozna\u010davaju gdje bi trebali pojaviti vrhovi buke kavitacije i prolaza lopatica, tako da se lutaju\u0107a subharmonijska zona recirkulacije jasno isti\u010de.<\/p>\n<p>Recirkulacija je me\u0111u najstro\u017eim radnim uvjetima koje centrifugalna pumpa mo\u017ee do\u017eivjeti. Njena karakteristi\u010dna subharmonijska signatura vibracije, velike amplitude pulsacija i sposobnost za brzo mehani\u010dko o\u0161te\u0107enje \u010dini bitnom da se razumeju uvjeti po\u010detka, postavlja za\u0161tita minimalnog protoka i izbjegava kroni\u010dna vo\u017enja niskoga protoka \u2014 klju\u010devi pouzdanosti pumpe i dugotrajnosti u industrijski uslugama.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/bs\/glossary\/\">\u2190 Povratak na glavnu stranicu<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Saznajte o cirkulaciji u pumpama, obrnutom toku i nestabilnosti pri niskom protoku \u0161to uzrokuje sub-sinhrone vibracije, gubitke efikasnosti i potencijalne \u0161tete.<\/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\/bs\/wp-json\/wp\/v2\/glossary\/207","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/glossary\/207\/revisions"}],"predecessor-version":[{"id":101401,"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/glossary\/207\/revisions\/101401"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/media?parent=207"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/categories?post=207"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/tags?post=207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}