{"id":255,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/steam-whirl\/"},"modified":"2026-05-23T22:54:27","modified_gmt":"2026-05-23T22:54:27","slug":"steam-whirl","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/bs\/glossary\/steam-whirl\/","title":{"rendered":"\u0160ta je parna vrtlo\u017enost? Aerodinami\u010dka nestabilnost u turbinama"},"content":{"rendered":"<h1>Razumevanje parne vrtlo\u017enosti u turboma\u0161inama<\/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\/255?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\/255?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\/255?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\/255?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\/255?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\/255?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\/255?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\/255?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\/255?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\/255?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\/255?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\/255?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\/255?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\/255?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>Steam whirl<\/strong> \u2014 poznata i kao aerodinami\u010dka unakrsna sprega nestabilnosti ili vrtlo\u017enost pe\u010data \u2014 je <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/self-excited-vibration\/\">samouzbudivana vibracija<\/a> koja nastaje u parama i plinskim turbinama kada aerodinami\u010dke sile unutar lavirintnih pe\u010data, zazora na vrhovima lopatica ili drugih prstenastih prolaza generi\u0161u destabiliziraju\u0107u tangencijalnu silu na <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/rotor\/\">rotor<\/a>. Like <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/oil-whirl\/\">oil whirl<\/a> u hidrodinami\u010dkim le\u017eajima, to je oblik <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/rotor-instability\/\">nestabilnost rotora<\/a> pri kojoj se energija kontinualno preuzima iz stacionarnog toka pare ili plina i pretvara u orbitalnu kretnju vratila. Rezultat je vibracija velike amplitude <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/sub-synchronous\/\">sub-synchronous<\/a> <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/vibration\/\">vibration<\/a> na frekvenciji bliskoj jednoj od <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/natural-frequency\/\">prirodne frekvencije<\/a> \u2014 i ako se ne detektuje i ne korigovane brzo, mo\u017ee dovesti ma\u0161inu do katastrofalnog otkazivanja.<\/p>\n<h2>1. Fizi\u010dki mehanizam<\/h2>\n<p>Parna vrtlo\u017enost je fundamentalno interakcija fluid-struktura u uskom zazoru turbinskih pe\u010data. Razvija se u tri povezane faze.<\/p>\n<h3>Zazori lavirintnih pe\u010data<\/h3>\n<ul>\n<li>Para ili plin protok kroz uske prstenaste prolaze izme\u0111u pokretnih i nepokretnih komponenti pe\u010data.<\/li>\n<li>Visoka razlika pritiska deluje preko pe\u010data \u2014 \u010desto 50\u2013200 bar u velikim ma\u0161inama.<\/li>\n<li>Radijalni zazori su mali, tipi\u010dno 0,2\u20130,5 mm.<\/li>\n<li>Tok dobija vrtlo\u017enost, tangencijalnu komponentu brzine, dok prolazi kroz zube pe\u010data.<\/li>\n<\/ul>\n<h3>Aerodinami\u010dka popre\u010dna veza<\/h3>\n<p>Nestabilnost se javlja \u010dim se rotor pomakne iz centranog polo\u017eaja:<\/p>\n<ul>\n<li>Zazor postaje asimetri\u010dno \u2014 manji s jedne strane, ve\u0107i na suprotnoj strani.<\/li>\n<li>Tok i raspodjela tlaka oko zaptiva\u010da postaju neujedna\u010deni.<\/li>\n<li>Neto aerodinami\u010dka sila dobija <em>tangential<\/em> komponentu, koja djeluje okomito na pomak umjesto da ga suprotstavlja.<\/li>\n<li>Ta tangencijalna sila pona\u0161a se kao destabiliziraju\u0107a <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/stiffness\/\">stiffness<\/a>\"negativna \"krutost\", potiskuju\u0107i rotor du\u017e njegove orbite umjesto prema centru.<\/li>\n<\/ul>\n<h3>Samopobu\u0111ena vibracija<\/h3>\n<ul>\n<li>Tangencijalna sila pokre\u0107e rotor u prednju <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/whirl\/\">whirl<\/a> orbit.<\/li>\n<li>Frekvencija orbite se stabilizira blizu prirodne frekvencije, pa je subsinkrona.<\/li>\n<li>Energija se kontinuirano ekstrahuje iz toka pare da bi se odr\u017eao pokret.<\/li>\n<li>Amplituda se pove\u0107ava dok je ograni\u010dena raspolo\u017eivim zazorem \u2014 ili lomom stroja.<\/li>\n<\/ul>\n<h2>2. Uslovi koji poti\u010du rotiranje pare<\/h2>\n<p>Postaje li stroj nestabilan ovisi o ravnote\u017ei izme\u0111u destabiliziraju\u0107ih sila zaptiva\u010da i raspolo\u017eive <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/damping\/\">damping<\/a>krutosti. Tri grupe faktora nagnjavaju tu ravnote\u017eu.<\/p>\n<h3>Geometrijski faktori<\/h3>\n<ul>\n<li><strong>Tijesni zazori zaptiva\u010da:<\/strong> manji zazori daju ja\u010de aerodinami\u010dke sile.<\/li>\n<li><strong>Duge duljine zaptiva\u010da:<\/strong> vi\u0161e zaptivnih zubaca ili du\u017ee sekcije zaptiva\u010da pove\u0107avaju destabiliziraju\u0107u silu.<\/li>\n<li><strong>Velika brzina vrtnje:<\/strong> tok koji ulazi u zaptiva\u010d sa velikom tangencijalnom komponentom je posebno destabilizuju\u0107i.<\/li>\n<li><strong>Veliki promjeri zaptiva\u010da:<\/strong> ve\u0107i radijus poja\u010dava moment koji generira aerodinami\u010dka sila.<\/li>\n<\/ul>\n<h3>Radni uslovi<\/h3>\n<ul>\n<li><strong>Velika razlika tlaka:<\/strong> ve\u0107a razlika tlaka na zaptiva\u010d\u0443 pove\u0107ava silu.<\/li>\n<li><strong>Velika brzina rotora:<\/strong> i centrifugalni efekti i brzina vrtnje rastu sa brzinom.<\/li>\n<li><strong>Malo prigu\u0161enje le\u017eaja:<\/strong> nedovoljan kapacitet prigu\u0161enja ne mo\u017ee suprotstaviti se silama zaptiva\u010da.<\/li>\n<li><strong>Uvjeti male optere\u0107enja:<\/strong> mala optere\u0107enja le\u017eaja smanjuju efektivno prigu\u0161enje <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/journal-bearing\/\">le\u017eaja<\/a> can provide.<\/li>\n<\/ul>\n<h3>Karakteristike Rotora<\/h3>\n<ul>\n<li><strong>Fleksibilni rotori:<\/strong> a <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/flexible-rotor\/\">flexible rotor<\/a> koja se izvr\u0161ava iznad njene <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/critical-speed\/\">kriti\u010dne brzine<\/a> je osjetljivija.<\/li>\n<li><strong>Sistemi sa malim prigu\u0161enjem:<\/strong> minimalno strukturno ili prigu\u0161enje le\u017eaja ne ostavlja ni\u0161ta da apsorbuje energiju.<\/li>\n<li><strong>Veliki omjer du\u017eine i promjera:<\/strong> tankovi rotori su prirodno skloniji nestabilnosti.<\/li>\n<\/ul>\n<h2>3. Karakteristike Dijagnostike<\/h2>\n<h3>Karakteristika vibracije<\/h3>\n<p>Vrtlogovi pare ostavljaju distinktivan oblik koji <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/vibration-analysis\/\">vibration analysis<\/a> se mo\u017ee pouzdano identificirati:<\/p>\n<table border=\"1\" style=\"width:100%; border-collapse:collapse;\">\n<tr>\n<th>Parameter<\/th>\n<th>Characteristic<\/th>\n<\/tr>\n<tr>\n<td>Frequency<\/td>\n<td>Podsinhronog, obi\u010dno 0,3\u20130,6\u00d7 brzine rada, \u010desto se zaklju\u010dava na prirodnu frekvenciju<\/td>\n<\/tr>\n<tr>\n<td>Amplitude<\/td>\n<td>Visoka \u2014 \u010desto 5\u201320 puta ve\u0107a od normalne vibracije neuravnote\u017eenosti<\/td>\n<\/tr>\n<tr>\n<td>Onset<\/td>\n<td>Iznenadna, iznad odre\u0111ene brzine ili tlaka<\/td>\n<\/tr>\n<tr>\n<td>Zavisnost od brzine<\/td>\n<td>Frekvencija se mo\u017ee zaklju\u010dati i odbiti da prati promjene brzine<\/td>\n<\/tr>\n<tr>\n<td>Orbit<\/td>\n<td>Veliki kru\u017eni ili elipti\u010dni, prednose\u0107a precesija<\/td>\n<\/tr>\n<tr>\n<td>Spectrum<\/td>\n<td>Dominantni podsinhronog vrh<\/td>\n<\/tr>\n<\/table>\n<h3>Razlikovanje od Ostalih Nestabilnosti<\/h3>\n<ul>\n<li><strong>u odnosu na uljnu cirkulaciju \/ udarce:<\/strong> vrtlog pare javlja se u turbinama sa labirintskim brtvama, dok se uljni vrtlog javlja u obi\u010dnim <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/journal-bearing\/\">kliznih le\u017eaja<\/a>.<\/li>\n<li><strong>vs. unbalance:<\/strong> vrtlog pare je podsinhronog, dok je <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/imbalance\/\">unbalance<\/a> is a 1\u00d7 <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/synchronous-vibration\/\">synchronous<\/a> response.<\/li>\n<li><strong>vs. rub:<\/strong> vrtlog pare mo\u017ee nastati bez bilo kakvog kontakta, a njegova frekvencija je stabilnija nego haoti\u010dna vibracija <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/rotor-rub\/\">rotor rub<\/a>.<\/li>\n<\/ul>\n<h2>4. Metode Prevencije i Ubla\u017eavanja<\/h2>\n<p>Ve\u0107ina protumjera usmjerava se na dva cilja: smanjiti destabiliziraju\u0107i vrtlog na mjestu izvora ili dodati prigu\u0161enje kako bi rotor mogao biti apsorpcijom. Dizajn brtve rje\u0161ava prvi, a pobolj\u0161anja le\u017eajeva i operativne granice rje\u0161avaju drugi.<\/p>\n<h3>Izmjene Dizajna Brtve<\/h3>\n<ul>\n<li><strong>Ure\u0111aji protiv vrtlo\u017ea (brtve protiv vrtlo\u017ea):<\/strong> nepomi\u010dne lopatice ili pregrade postavljene uzvodno od proreza brtve uklanjaju tangencijalnu brzinu iz dolaznog toka, drasti\u010dno smanjuju\u0107i silu unakrsne veze. Ovo je najefikasnija i naj\u010de\u0161\u0107e kori\u0161\u0107ena rje\u0161enja.<\/li>\n<li><strong>Sa\u0107aste brtve:<\/strong> zamjena glatkih labirinta sa strukturom po uzoru na medeni sa\u0107e generi\u0161e turbulenciju koja rasipa energiju vrtloga i pove\u0107ava efektivno prigu\u0161enje u zoni brtvila; na\u0161iroko kori\u0161teno u modernim gasnim turbinama.<\/li>\n<li><strong>Pove\u0107ana brtvila razmaka:<\/strong> ve\u0107i radijalni razmaci slabe aerodinami\u010dku silu, ali na ra\u010dun ve\u0107e curenja i smanjene efikasnosti turbine, pa je ovo obi\u010dno samo privremena mjera.<\/li>\n<li><strong>Damper seals:<\/strong> specijalno konstruisana brtvila \u2014 brtvila sa d\u017eepovima za prigu\u0161enje i brtvila sa modelom rupa \u2014 koja pru\u017eaju prigu\u0161enje dok jo\u0161 uvijek brtvide, dodaju\u0107i stabilizacijsku silu za suprotovanje unakrsnoj sprezi.<\/li>\n<\/ul>\n<h3>Pobolj\u0161anja sistema le\u017eajeva<\/h3>\n<ul>\n<li><strong>Pove\u0107anje prigu\u0161enja le\u017eaja:<\/strong> monta\u017ea le\u017eaja sa naginju\u0107im jastucima ili dodaj <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/squeeze-film-damper\/\">prigu\u0161iva\u010d sa stla\u010denim filmom<\/a>.<\/li>\n<li><strong>Prednapregnu\u0107e le\u017eaja:<\/strong> applying <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/preload\/\">preload<\/a> pove\u0107ava i efektivnu krutost i prigu\u0161enje.<\/li>\n<li><strong>Optimizovani dizajn le\u017eaja:<\/strong> odabir tipa i konfiguracije le\u017eaja za maksimalnu marginu stabilnosti.<\/li>\n<\/ul>\n<h3>Operativne kontrole<\/h3>\n<ul>\n<li><strong>Ograni\u010denja brzine:<\/strong> odr\u017eavati brzinu rada ispod praga nestabilnosti.<\/li>\n<li><strong>Upravljanje optere\u0107enjem:<\/strong> izbjegavati rad sa malom optere\u0107enjem koji uklanja prigu\u0161enje iz le\u017eajeva.<\/li>\n<li><strong>Kontrola pritiska:<\/strong> smanjiti diferencijale pritiska brtvila gdje je to mogu\u0107e u procesu.<\/li>\n<li><strong>Kontinuirano nadziranje:<\/strong> real-time <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/condition-monitoring\/\">pra\u0107enje stanja stroja<\/a> sa namenskim alarmima subsinhrona.<\/li>\n<\/ul>\n<h2>5. Detekcija i hitna reagovanja<\/h2>\n<h3>Rani znakovi upozorenja<\/h3>\n<ul>\n<li>Mali subsinhroni vrhunci po\u010dinju se pojavljivati u vibracijama <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/spectrum\/\">spectrum<\/a>.<\/li>\n<li>Povremene komponente visokih frekvencija.<\/li>\n<li>Postepeno pove\u0107anje ukupne <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/vibration-severity\/\">severiteta vibracija<\/a> kako brzina primi\u010de se pragu.<\/li>\n<li>Changes in the <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/orbit\/\">orbit<\/a> oblik zabilje\u017een pomo\u0107u senzora blizine.<\/li>\n<\/ul>\n<h3>Neposredne mjere kada je ustanovljena vrtavost od pare<\/h3>\n<ol>\n<li><strong>Reduce speed:<\/strong> neposredno smanjiti brzinu ispod praga.<\/li>\n<li><strong>Do not delay:<\/strong> amplituda mo\u017ee porasti od prihvatljive do destruktivne u 30\u201360 sekundi.<\/li>\n<li><strong>Hitno ga\u0161enje:<\/strong> isklju\u010diti ma\u0161inu ako je smanjenje brzine nedostatno ili nemogu\u0107e.<\/li>\n<li><strong>Dokumentujte incident:<\/strong> zabilje\u017eiti brzinu u trenutku po\u010detka, frekvenciju, vrhunsku amplitudu i radne uslove.<\/li>\n<li><strong>Nemojte restartati:<\/strong> dr\u017eati ma\u0161inu van pogona dok se uzrok ne identificira i otkloni.<\/li>\n<\/ol>\n<h3>Gdje se prenosivi instrumenti koriste<\/h3>\n<p>Trajno instalirani sistemi za\u0161tite rukovode trenutnom isklju\u010denjem, ali je prenosivi dvokanalnih analizator neprocjenjiv za istragu nestabilnosti nakon \u0161to je ma\u0161ina zaustavljena i za kontrolne provjere nakon toga. Instrument kao \u0161to je <a href=\"https:\/\/vibromera.eu\/bs\/proizvod\/balanset-1\/\">Balanset-1A<\/a> bilje\u017ei FFT spektar kako bi se potvrdi subsinhroni vrhunac, prati njegovu amplitudu tijekom kontroliranog podizanja brzine, i omogu\u0107ava in\u017eenjeru da prvo isklju\u010di problem od <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/imbalance\/\">unbalance<\/a> - mjerenjem amplitude i faze pri brzini rada - prije nego \u0161to se vibracija pripi\u0161e istinskoj samopobu\u0111enoj nestabilnosti zaptiva\u010da. Razlikovanje obi\u010dne neuravnote\u017eenosti, koju <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/field-balancing\/\">field balancing<\/a> mo\u017ee otkloniti, od prave vrtavosti od pare, koju ne mo\u017ee, kriti\u010dan je ranu dijagnosti\u010dki korak.<\/p>\n<h2>6. Industrije, primjene i srodne pojave<\/h2>\n<p>Vrtavost od pare je od posebnog zna\u010daja u:<\/p>\n<ul>\n<li><strong>Proizvodnja elektri\u010dne energije:<\/strong> velikim parnim turbogeneratorima.<\/li>\n<li><strong>Petrochemical:<\/strong> paro-pogonjenim kompresorima i pumpama.<\/li>\n<li><strong>Gas turbines:<\/strong> avionske motore i industrijske plinske turbine.<\/li>\n<li><strong>Procesne industrije:<\/strong> bilo koja turboma\u0161inerija visokog broja okretaja opremljena labirintnim brtvilima.<\/li>\n<\/ul>\n<p>Tako\u0111er se nalazi u familiji srodnih nestabilnosti. <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/oil-whirl\/\">Oil whirl<\/a> dijeli isti destabiliziraju\u0107i mehanizam, ali u uljnom sloju le\u017eaja, a ne u brtvilu; <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/shaft-whip\/\">shaft whip<\/a> pokazuje istu zaklju\u010danu frekvenciju na prirodnoj frekvenciji; i svi oni su \u010dlanovi \u0161ire kategorije samouzbu\u0107enih <a href=\"https:\/\/vibromera.eu\/bs\/glossary\/rotor-instability\/\">nestabilnost rotora<\/a>. Iako su napredci u tehnologiji brtvi i projektovanju le\u017eaja smanjili u\u010destalost njene pojave, razumijevanje parne vrtnje ostaje neophodno za sve koji projektuju ili rade sa turboma\u0161inerijom visokog broja okretaja i visokog tlaka.<\/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 parama whirl, samodra\u017edaju\u0107a nestabilnost vibracija u parnim turbinama uzrokovana aerodinami\u010dkim silama unakrsnog sprezanja u labirintnim zaptiva\u010dima i razacima na vrhovima lopatica.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-255","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/glossary\/255","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\/255\/revisions"}],"predecessor-version":[{"id":101413,"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/glossary\/255\/revisions\/101413"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/media?parent=255"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/categories?post=255"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/bs\/wp-json\/wp\/v2\/tags?post=255"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}