{"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\/hr\/glossary\/steam-whirl\/","title":{"rendered":"\u0160to je parni vrtlog? Aerodinami\u010dka nestabilnost u turbinama"},"content":{"rendered":"<h1>Razumijevanje vrtloga pare u turbostrojevima<\/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\/hr\/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\/hr\/product\/balanset-1\/\" title=\"Prijenosni balanser &amp; 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 prijenosnog balansera i analizatora 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\/hr\/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\/hr\/product\/balanset-1\/\" title=\"Prijenosni balanser &amp; analizator vibracija Balanset-1A\">Portable balancer &amp; Vibration analyzer 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 je primjenjivo)<\/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=\"\/hr\/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 ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/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=\"Dodaj u ko\u0161aricu: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Portable balancer &amp; Vibration analyzer Balanset-1A&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/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=\"Detalj senzora vibracija Balanset-1A\" 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\/hr\/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\/hr\/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 je primjenjivo)<\/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=\"\/hr\/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 ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/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=\"Dodaj u ko\u0161aricu: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Vibration sensor&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/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\/hr\/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\/hr\/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 je primjenjivo)<\/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=\"\/hr\/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 ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/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=\"Dodaj u ko\u0161aricu: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Optical Sensor (Laser Tachometer)&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/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 komplet za balansiranje rotora: torba za no\u0161enje, vi\u0161ekanalni pretvara\u010d signala, ru\u010dni analizator, magnetska baza, senzori vibracija i spiralni kabeli.\" 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\/hr\/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\/hr\/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 je primjenjivo)<\/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=\"\/hr\/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 ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/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=\"Dodaj u ko\u0161aricu: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Balanset-4&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/product\/magnet-stand\/\" title=\"Magnetski stalak Insize nosivosti 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=\"Magnetska baza.\" 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\/hr\/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\/hr\/product\/magnet-stand\/\" title=\"Magnetski stalak Insize nosivosti 60 kgf\">Magnetski stalak Insize nosivosti 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 je primjenjivo)<\/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=\"\/hr\/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 ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/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=\"Dodaj u ko\u0161aricu: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Magnetic Stand Insize-60-kgf&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/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\/hr\/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\/hr\/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 je primjenjivo)<\/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=\"\/hr\/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 ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/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=\"Dodaj u ko\u0161aricu: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Reflective tape&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/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=\"Sadr\u017eaj kompleta Balanset-1A s jedinicom za su\u010delje, senzorima, tahometrom i dodacima\" 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\/hr\/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\/hr\/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 je primjenjivo)<\/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=\"\/hr\/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 ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/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=\"Dodaj u ko\u0161aricu: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Dynamic balancer \u201cBalanset-1A\u201d OEM&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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>Parni vrtlog<\/strong> \u2014 poznata i kao aerodinami\u010dka Cross-coupling nestabilnost ili seal whirl \u2014 je <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/self-excited-vibration\/\">samopobudne vibracije<\/a> koja nastaje u parnim i plinskim turbinama kada aerodinami\u010dke sile unutar labirintnih brtvi, zazora na vrhovima lopatica ili drugih prstenastih kanala stvaraju destabiliziraju\u0107u tangencijalnu silu na <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/rotor\/\">rotor<\/a>. Poput <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/oil-whirl\/\">vrtlog ulja<\/a> u hidrodinami\u010dkim le\u017eajevima, to je oblik <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/rotor-instability\/\">nestabilnost rotora<\/a> u kojem se energija kontinuirano crpi iz stalne struje pare ili plina i pretvara u orbitalnu gibanja vratila. Rezultat je vibracijska amplituda visokog amplitude <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/sub-synchronous\/\">subsinkroni<\/a> <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/vibration\/\">vibracija<\/a> na frekvenciji bliskoj jednoj od rotora <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/natural-frequency\/\">prirodne frekvencije<\/a> \u2014 i ako se ne otkrije i ispravi brzo, mo\u017ee dovesti stroj do katastrofalne kvar.<\/p>\n<h2>1. Fizi\u010dki mehanizam<\/h2>\n<p>Steam whirl je temeljno me\u0111udjelovanje fluida i strukture u uskim zazorima turbinskih brtvi. Razvija se u tri povezane faze.<\/p>\n<h3>Zazori labirintnih brtvi<\/h3>\n<ul>\n<li>Para ili plin struje kroz uske prstenaste prolaze izme\u0111u rotiraju\u0107ih i nepokretnih komponenti brtve<\/li>\n<li>Veliki tla\u010dni diferencijal djeluje na brtve \u2014 \u010desto 50\u2013200 bar u velikim strojevima.<\/li>\n<li>Radijalni zazori su mali, obi\u010dno 0,2\u20130,5 mm.<\/li>\n<li>Tok dobiva vrtnju, tangencijalnu komponentu brzine, dok prolazi kroz zube brtve.<\/li>\n<\/ul>\n<h3>Aerodinami\u010dka Cross-coupling<\/h3>\n<p>Nestabilnost nastaje u trenutku kada se rotor pomakne iz centriranog polo\u017eaja:<\/p>\n<ul>\n<li>Zazor postaje asimetri\u010dan \u2014 manji s jedne strane, ve\u0107i s suprotne strane.<\/li>\n<li>Distribucija toka i tlaka oko zaptivnog reda postaje neujedna\u010dena.<\/li>\n<li>Neto aerodinami\u010dka sila dobiva <em>tangencijalna<\/em> komponentu koja djeluje okomito na pomak umjesto da mu se suprotstavlja.<\/li>\n<li>Ta tangencijalna sila pona\u0161a se kao destabiliziraju\u0107i &#8220;negativan <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/stiffness\/\">uko\u010denost<\/a>&#8220;, potisni rotor po njegovoj orbiti umjesto prema centru.<\/li>\n<\/ul>\n<h3>Samopobudne vibracije<\/h3>\n<ul>\n<li>Tangencijalna sila rotora poja\u0161njava u pravac rotacije <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/whirl\/\">vrtlo\u017eiti se<\/a> orbita.<\/li>\n<li>Frekvencija orbite se stabilizira blizu prirodne frekvencije, prema tome subsinkriona.<\/li>\n<li>Energija se kontinuirano ekstrahira iz panog toka kako bi se odr\u017ealo gibanje.<\/li>\n<li>Amplituda raste sve dok je ne ograni\u010di dostupan zazor \u2014 ili otkazivanje stroja.<\/li>\n<\/ul>\n<h2>2. Uvjeti koji poti\u010du vrtlogu pare<\/h2>\n<p>Postaje li zadana stroja nestabilna ovisi o ravnote\u017ei izme\u0111u destabiliziraju\u0107ih sila zaptivnog reda i dostupnog <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/damping\/\">prigu\u0161ivanje<\/a>. Tri grupe \u010dimbenika nagibaju tu ravnote\u017eu.<\/p>\n<h3>Geometrijski faktori<\/h3>\n<ul>\n<li><strong>Uski zazori zaptivnih redova:<\/strong> manji zazori stvaraju ja\u0107e aerodinami\u010dke sile.<\/li>\n<li><strong>Duga\u010dke duljine zaptivnih redova:<\/strong> vi\u0161e zaptivnih zuba ili dulji dijelovi zaptivnog reda pove\u0107avaju destabiliziraju\u0107u silu.<\/li>\n<li><strong>Visoka brzina vrtnje:<\/strong> tok koji ulazi u zaptivni red s velikom tangencijalnom komponentom je posebno destabiliziraju\u0107i.<\/li>\n<li><strong>Veliki promjeri brtvila:<\/strong> ve\u0107i radijus poja\u010dava moment koji stvara aerodinami\u010dka sila.<\/li>\n<\/ul>\n<h3>Radni uvjeti<\/h3>\n<ul>\n<li><strong>Visoke razlike tlaka:<\/strong> ve\u0107i pad tlaka kroz brtviloprosliku povisuje silu.<\/li>\n<li><strong>Visoka brzina rotora:<\/strong> i centrifugalni u\u010dinci i brzina vrtnje rastu s brzinom.<\/li>\n<li><strong>Nisko prigu\u0161enje le\u017eaja:<\/strong> nedostatno prigu\u0161enje ne mo\u017ee parirati silama brtvila.<\/li>\n<li><strong>Optere\u0107enja niskog intenziteta:<\/strong> niska optere\u0107enja le\u017eaja smanjuju u\u010dinkovito prigu\u0161enje <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/journal-bearing\/\">le\u017eaj kliza\u010da<\/a> mo\u017ee pru\u017eiti.<\/li>\n<\/ul>\n<h3>Karakteristike rotora<\/h3>\n<ul>\n<li><strong>Fleksibilni rotori:<\/strong> a <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/flexible-rotor\/\">fleksibilni rotor<\/a> rad iznad njegove <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/critical-speed\/\">kriti\u010dne brzine<\/a> je podlo\u017eniji.<\/li>\n<li><strong>Sustavi sa niskim prigu\u0161enjem:<\/strong> minimalno strukturno ili prigu\u0161enje le\u017eaja ne ostavlja ni\u0161ta za apsorpciju energije.<\/li>\n<li><strong>Veliki omjer duljine i promjera:<\/strong> vitki rotori su inherentno skloniji nestabilnosti.<\/li>\n<\/ul>\n<h2>3. Dijagnosti\u010dka svojstva<\/h2>\n<h3>Vibracijski potpis<\/h3>\n<p>Vrtnja brtvila ostavlja karakteristi\u010dan obrazac koji <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/vibration-analysis\/\">Analiza vibracija<\/a> mo\u017eete identificirati s pouzdanjem:<\/p>\n<table border=\"1\" style=\"width:100%; border-collapse:collapse;\">\n<tr>\n<th>Parametar<\/th>\n<th>Karakteristi\u010dno<\/th>\n<\/tr>\n<tr>\n<td>Frekvencija<\/td>\n<td>Subsinhronog, tipi\u010dno 0,3\u20130,6\u00d7 brzina vrtnje, \u010desto se blokira na prirodnu frekvenciju<\/td>\n<\/tr>\n<tr>\n<td>Amplituda<\/td>\n<td>Visoka \u2014 \u010desto 5\u201320 puta ve\u0107a od normalne vibracije nebalancirano<\/td>\n<\/tr>\n<tr>\n<td>Po\u010detak<\/td>\n<td>Nagla, iznad grani\u010dne brzine ili tlaka<\/td>\n<\/tr>\n<tr>\n<td>Ovisnost o brzini<\/td>\n<td>Frekvencija se mo\u017ee blokirati i odbiti pratiti promjene brzine<\/td>\n<\/tr>\n<tr>\n<td>Orbita<\/td>\n<td>Velika kru\u017ena ili elipti\u010dna, direktna precesija<\/td>\n<\/tr>\n<tr>\n<td>Spektar<\/td>\n<td>Dominantni subsinkroni vrh<\/td>\n<\/tr>\n<\/table>\n<h3>Razlikovanje od drugih nestabilnosti<\/h3>\n<ul>\n<li><strong>u odnosu na uljnu vrtnju \/ udarce:<\/strong> parna vrtnja javlja se u turbinama s labirintnim brtvilama, dok se uljn\u0430 vrtnja javlja u kugli\u010dnim <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/journal-bearing\/\">le\u017eajevi kliza\u010da<\/a>.<\/li>\n<li><strong>u odnosu na neuravnote\u017eenost:<\/strong> parna vrtnja je subsinhronog, dok <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/imbalance\/\">neravnote\u017ea<\/a> iznosi 1\u00d7 <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/synchronous-vibration\/\">sinkroni<\/a> odziv.<\/li>\n<li><strong>u odnosu na trljanje:<\/strong> parna vrtnja mo\u017ee nastati bez ikakva dodira, a njezina frekvencija je stabilnija od nepravilne vibracije <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/rotor-rub\/\">trljanje rotora<\/a>.<\/li>\n<\/ul>\n<h2>4. Metode sprje\u010davanja i ubla\u017eavanja<\/h2>\n<p>Ve\u0107ina protumjera napadaju jedan od dva cilja: smanjiti destabiliziraju\u0107u vrtnju na mjestu izvora ili dodati prigu\u0161enje tako da rotor mo\u017ee apsorbir\u0430\u0442\u0438. Dizajn brtvila rje\u0161ava prvo; pobolj\u0161anja le\u017eaja i radne granice rje\u0161avaju drugo.<\/p>\n<h3>Modifikacije dizajna brtve<\/h3>\n<ul>\n<li><strong>Ure\u0111aji za sprje\u010davanje vrtnje (zako\u010dnici vrtnje):<\/strong> stacionarne lopatice ili pregrad\u0435 postavljene uzvodno od brtvila uklanjaju tangencijalnu brzinu iz dovodnog toka, drasti\u010dno smanjuju\u0107i silu unakrsnog spajanja. Ovo je najefikasniji i naj\u010de\u0161\u0107e kori\u0161ten rje\u0161enju.<\/li>\n<li><strong>Sa\u0107ast\u0430 brtvil\u0430:<\/strong> zamjena glatkih labirintnih dijelova strukturom od sa\u0107a generiraj turbulenciju koja rasipa energiju vrtnje i pove\u0107ava efektivno prigu\u0161enje u podru\u010dju brtvila; \u0161iroko se koristi u modernim plinskim turbinama.<\/li>\n<li><strong>Pove\u0107ane brtvilne zazore:<\/strong> ve\u0107e radijalne zazore oslabjuju aerodinamsku silu, ali na ra\u010dun ve\u0107e procurivanja i smanjena u\u010dinkovitosti turbine, pa je to obi\u010dno samo privremen\u0430 mjera.<\/li>\n<li><strong>Brtve prigu\u0161iva\u010da:<\/strong> \u0441\u043f\u0435\u0446\u0438\u0458alno dizajnirana brtvil\u0430 \u2014 brtvil\u0430 s torbama prigu\u0161iva\u010d\u0430i brtvil\u0430 s otvorima \u2014 koje pru\u017eaju prigu\u0161enje dok jo\u0161 uvijek brtvile, dodaju\u0107i stabilizacijsku silu koja se suprotstavlja unakrsnom spajanju.<\/li>\n<\/ul>\n<h3>Pobolj\u0161anja sustava le\u017eajeva<\/h3>\n<ul>\n<li><strong>Pove\u0107ati prigu\u0161enje le\u017eaja:<\/strong> postaviti klizne le\u017eaje s naginju\u0107im nosadom ili dodati <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/squeeze-film-damper\/\">prigu\u0161iva\u010d sa stisnim uljnim filmom<\/a>.<\/li>\n<li><strong>Predoptere\u0107enje le\u017eaja:<\/strong> primjenom <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/preload\/\">predoptere\u0107enje<\/a> pove\u0107ava i efektivnu krutost i prigu\u0161enje.<\/li>\n<li><strong>Optimizirani dizajn le\u017eaja:<\/strong> odabir tipa le\u017eaja i konfiguracije za maksimalnu marginu stabilnosti.<\/li>\n<\/ul>\n<h3>Operativne kontrole<\/h3>\n<ul>\n<li><strong>Ograni\u010denja brzine:<\/strong> dr\u017eite radnu brzinu ispod praga nestabilnosti.<\/li>\n<li><strong>Upravljanje optere\u0107enjem:<\/strong> izbjegavajte rad s malim optere\u0107enjem koje uklanja prigu\u0161enje iz le\u017eajeva.<\/li>\n<li><strong>Kontrola tlaka:<\/strong> smanjite diferencijale tlaka brtve gdje je to mogu\u0107e.<\/li>\n<li><strong>Kontinuirano pra\u0107enje:<\/strong> u stvarnom vremenu <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/condition-monitoring\/\">pra\u0107enje stanja<\/a> s namjenskim sub-sinkronim alarmima.<\/li>\n<\/ul>\n<h2>5. Detekcija i brz odgovor<\/h2>\n<h3>Rani znakovi upozorenja<\/h3>\n<ul>\n<li>Mali sub-sinkroni vrhunci koji se po\u010dinju pojavljivati u vibraciji <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/spectrum\/\">spektar<\/a>.<\/li>\n<li>Povremene komponente visoke frekvencije.<\/li>\n<li>Postepeno pove\u0107anje ukupne <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/vibration-severity\/\">intenzitet vibracija<\/a> kako se brzina pribli\u017eava pragu.<\/li>\n<li>Promjene u <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/orbit\/\">orbita<\/a> oblik zabilje\u017een senzorima blizine.<\/li>\n<\/ul>\n<h3>Hitne mjere kada je steama prisutna vrtnja<\/h3>\n<ol>\n<li><strong>Smanjenje brzine:<\/strong> odmah smanjite brzinu ispod praga.<\/li>\n<li><strong>Nemojte odga\u0111ati:<\/strong> Amplituda mo\u017ee narasti od prihvatljive do destruktivne za 30-60 sekundi<\/li>\n<li><strong>Hitno zaustavljanje:<\/strong> isklju\u010dite stroj ako je smanjenje brzine nedostatno ili nemogu\u0107e.<\/li>\n<li><strong>Dokumentirajte doga\u0111aj:<\/strong> zabilje\u017eite brzinu na po\u010detku, frekvenciju, vr\u0161nu amplitudu i radne uvjete.<\/li>\n<li><strong>Nemojte ponovno pokrenuti:<\/strong> odr\u017eavajte stroj zaustavljen dok se uzrok ne identificira i otkloni.<\/li>\n<\/ol>\n<h3>Gdje su poljna mjerila va\u017ena<\/h3>\n<p>Stalno instalirani za\u0161titni sustavi omogu\u0107avaju brzo isklju\u010divanje, ali prijenosni dvokanalski analizator je neocjenjiv za istra\u017eivanje nestabilnosti nakon \u0161to je stroj zaustavljen i za provjere pri pu\u0161tanju u pogon kasnije. Instrument kao \u0161to je <a href=\"https:\/\/vibromera.eu\/hr\/proizvod\/balanset-1\/\">Balanset-1A<\/a> hvata FFT spektar kako bi se potvrdio vrh ispod sinhrone brzine, prati njegovu amplitudu tijekom kontroliranog startanja, i omogu\u0107ava in\u017eenjeru da prvo isklju\u010di problem 1\u00d7 <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/imbalance\/\">neravnote\u017ea<\/a> \u2014 mjerenjem amplitude i faze na radnoj brzini \u2014 prije nego pripi\u0161e vibraciju pravoj samopobu\u0111enoj nestabilnosti brtve. Razlikovanje obi\u010dne nebalansa, koju <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/field-balancing\/\">terensko balansiranje<\/a> mo\u017ee otkloniti, od pravi vrtloga pare, \u0161to ne mo\u017ee, klju\u010dan je rani dijagnosti\u010dki korak.<\/p>\n<h2>6. Industrije, primjene i povezani fenomeni<\/h2>\n<p>Vrtlog pare je posebno va\u017ean u:<\/p>\n<ul>\n<li><strong>Proizvodnja elektri\u010dne energije:<\/strong> veliki parni turbogeneratori.<\/li>\n<li><strong>Petrokemija:<\/strong> parni kompresori i pumpe.<\/li>\n<li><strong>Plinske turbine:<\/strong> zrakoplovni motori i industrijske plinske turbine.<\/li>\n<li><strong>Procesne industrije:<\/strong> bilo koja brzohodna turboma\u0161inerija s labirintnim brtvama.<\/li>\n<\/ul>\n<p>To se tako\u0111er nalazi u obitelji sli\u010dnih nestabilnosti. <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/oil-whirl\/\">Uljni vrtlog<\/a> dijeli isti mehanizam destabilizacije ali u uljanom sloju le\u017eaja umjesto u brtvi; <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/shaft-whip\/\">bi\u010d osovine<\/a> pokazuje istu blokiranu frekvenciju na prirodnoj frekvenciji; i svi su \u010dlanovi \u0161ire kategorije samopobu\u0111enih <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/rotor-instability\/\">nestabilnost rotora<\/a>. Iako su napredci u tehnologiji brtvi i dizajnu le\u017eaja smanjili u\u010destalost pojave, razumijevanje vrtloga pare ostaje bitno za sve koji konstruiraju ili pogone brzohodnu turboma\u0161ineriju visoke tlaka.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/\">\u2190 Natrag na glavni indeks<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Saznajte vi\u0161e o vrtlogu pare, samopobudnoj vibracijskoj nestabilnosti u parnim turbinama uzrokovanoj aerodinami\u010dkim silama unakrsnog spajanja u labirintnim brtvama i zazorima vrhova 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\/hr\/wp-json\/wp\/v2\/glossary\/255","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/255\/revisions"}],"predecessor-version":[{"id":101413,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/255\/revisions\/101413"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/media?parent=255"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/categories?post=255"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/tags?post=255"}],"curies":[{"name":"radni list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}