{"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\/nb\/glossary\/steam-whirl\/","title":{"rendered":"Hva er dampvirvel? Aerodynamisk ustabilitet i turbiner"},"content":{"rendered":"<h1>Forst\u00e5 dampvirvel i turbomaskiner<\/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\/nb\/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\/nb\/product\/balanset-1\/\" title=\"B\u00e6rbart balanseapparat og vibrasjonsanalysator 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 komplett sett med b\u00e6rbart balanseapparat og vibrasjonsanalysator\" 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\/nb\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/nb\/product\/balanset-1\/\" title=\"B\u00e6rbart balanseapparat og vibrasjonsanalysator Balanset-1A\">B\u00e6rbart balanseapparat og vibrasjonsanalysator 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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/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=\"Legg i handlekurv: \u00abPortable balancer &amp; Vibration analyzer Balanset-1A\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abPortable balancer &amp; Vibration analyzer Balanset-1A\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/product\/vibration-sensor\/\" title=\"Vibrasjonssensor\">\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 vibrasjonssensor i n\u00e6rbilde\" 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\/nb\/product-category\/parts\/\" rel=\"tag\">Deler<\/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\/nb\/product\/vibration-sensor\/\" title=\"Vibrasjonssensor\">Vibrasjonssensor<\/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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/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=\"Legg i handlekurv: \u00abVibration sensor\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abVibration sensor\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (lasertakometer)\">\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=\"Optisk sensor (lasertakometer)\" 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\/nb\/product-category\/parts\/\" rel=\"tag\">Deler<\/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\/nb\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (lasertakometer)\">Optisk sensor (lasertakometer)<\/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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/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=\"Legg i handlekurv: \u00abOptical Sensor (Laser Tachometer)\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abOptical Sensor (Laser Tachometer)\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/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 rotorbalanseringssett: b\u00e6reveske, flerkanals signalbehandler, h\u00e5ndholdt analysator, magnetisk base, vibrasjonssensorer og spiralkabler.\" 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\/nb\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/nb\/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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/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=\"Legg i handlekurv: \u00abBalanset-4\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abBalanset-4\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/product\/magnet-stand\/\" title=\"Magnetisk stativ 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=\"Magnetisk 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\/nb\/product-category\/parts\/\" rel=\"tag\">Deler<\/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\/nb\/product\/magnet-stand\/\" title=\"Magnetisk stativ Insize-60-kgf\">Magnetisk stativ 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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" 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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\/nb\/product-category\/parts\/\" rel=\"tag\">Deler<\/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\/nb\/product\/reflective-tape\/\" title=\"Refleksb\u00e5nd\">Refleksb\u00e5nd<\/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> + MVA (hvis aktuelt)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div 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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-settet inneholder grensesnittenhet, sensorer, turteller og tilbeh\u00f8r\" 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\/nb\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/nb\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamisk balanseringsapparat &quot;Balanset-1A&quot; OEM\">Dynamisk balanseringsapparat \"Balanset-1A\" OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/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=\"Legg i handlekurv: \u00abDynamic balancer \u201cBalanset-1A\u201d OEM\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abDynamic balancer \u201cBalanset-1A\u201d OEM\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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>Dampvirvel<\/strong> \u2014 ogs\u00e5 kalt aerodynamisk krysskoblingsustabilitet eller \u00abseal whirl\u00bb \u2014 er en <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/self-excited-vibration\/\">selveksitert vibrasjon<\/a> som oppst\u00e5r i damp- og gassturbiner n\u00e5r aerodynamiske krefter inne i labyrintpakninger, mellomrom ved bladspissene eller andre ringformede kanaler skaper en destabiliserende tangentialkraft p\u00e5 <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/rotor\/\">rotor<\/a>. Liker <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/oil-whirl\/\">oljevirvel<\/a> i hydrodynamiske lagre er det en form for <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/rotor-instability\/\">rotorinstabilitet<\/a> der energi kontinuerlig hentes fra en jevn str\u00f8m av damp eller gass og omdannes til en roterende bevegelse i akselen. Resultatet er stor amplitud <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/sub-synchronous\/\">subsynkron<\/a> <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/vibration\/\">vibrasjon<\/a> med en frekvens n\u00e6r en av rotorenes <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/natural-frequency\/\">naturlige frekvenser<\/a> \u2014 og hvis det ikke oppdages og utbedres raskt, kan det f\u00f8re til at maskinen bryter sammen fullstendig.<\/p>\n<h2>1. Fysisk mekanisme<\/h2>\n<p>Dampvirvel er i bunn og grunn en vekselvirkning mellom v\u00e6ske og struktur i de trange mellomrommene i turbinpakningene. Den utvikler seg i tre sammenhengende trinn.<\/p>\n<h3>Godkjenning av labyrintpakninger<\/h3>\n<ul>\n<li>Damp eller gass str\u00f8mmer gjennom smale ringformede passasjer mellom roterende og stasjon\u00e6re tetningskomponenter<\/li>\n<li>Det oppst\u00e5r et stort trykkforskjell over tetningene \u2013 ofte 50\u2013200 bar i store maskiner.<\/li>\n<li>De radiale klaringene er sm\u00e5, vanligvis 0,2\u20130,5 mm.<\/li>\n<li>Str\u00f8mmen f\u00e5r en virvel, en tangentiell hastighetskomponent, n\u00e5r den passerer gjennom tetningstennene.<\/li>\n<\/ul>\n<h3>Aerodynamisk krysskobling<\/h3>\n<p>Ustabiliteten oppst\u00e5r i det \u00f8yeblikket rotoren forskyves fra sin sentrerte posisjon:<\/p>\n<ul>\n<li>Avstanden blir asymmetrisk \u2013 mindre p\u00e5 den ene siden, st\u00f8rre p\u00e5 den andre.<\/li>\n<li>Str\u00f8mnings- og trykkfordelingen rundt tetningen blir ujevn.<\/li>\n<li>Den aerodynamiske nettokraften \u00f8ker med <em>tangentiell<\/em> komponent som virker vinkelrett p\u00e5 forskyvningen i stedet for \u00e5 motvirke den.<\/li>\n<li>Den tangentielle kraften opptrer som en destabiliserende \u00abnegativ <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/stiffness\/\">stivhet<\/a>\u00ab, slik at rotoren skyves langs sin bane i stedet for tilbake til midten.<\/li>\n<\/ul>\n<h3>Selvopphisset vibrasjon<\/h3>\n<ul>\n<li>Den tangentielle kraften driver rotoren fremover <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/whirl\/\">virvel<\/a> ...bane.<\/li>\n<li>Oml\u00f8psfrekvensen stabiliserer seg n\u00e6r en egenfrekvens, og er dermed subsynkron.<\/li>\n<li>Det hentes kontinuerlig energi fra dampstr\u00f8mmen for \u00e5 opprettholde bevegelsen.<\/li>\n<li>Amplituden \u00f8ker til den begrenses av den tilgjengelige klaringen \u2013 eller av at maskinen svikter.<\/li>\n<\/ul>\n<h2>2. Forhold som fremmer dampvirvler<\/h2>\n<p>Om en gitt maskin blir ustabil, avhenger av balansen mellom destabiliserende tetningskrefter og den tilgjengelige <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/damping\/\">demping<\/a>. Tre grupper av faktorer tipper den balansen.<\/p>\n<h3>Geometriske faktorer<\/h3>\n<ul>\n<li><strong>Smale tetningsavstander:<\/strong> Mindre avstander gir sterkere aerodynamiske krefter.<\/li>\n<li><strong>Store tetningslengder:<\/strong> Flere tetningstennene eller lengre tetningsseksjoner \u00f8ker den destabiliserende kraften.<\/li>\n<li><strong>H\u00f8y virvelhastighet:<\/strong> Str\u00f8mning som treffer tetningen med en stor tangentiell komponent, er spesielt destabiliserende.<\/li>\n<li><strong>Store tetningsdiametre:<\/strong> En st\u00f8rre radius forsterker det momentet som skapes av den aerodynamiske kraften.<\/li>\n<\/ul>\n<h3>Driftsforhold<\/h3>\n<ul>\n<li><strong>Store trykkforskjeller:<\/strong> Et st\u00f8rre trykkfall over tetningen \u00f8ker kraften.<\/li>\n<li><strong>H\u00f8y rotorhastighet:<\/strong> B\u00e5de sentrifugaleffektene og virvelhastigheten \u00f8ker med hastigheten.<\/li>\n<li><strong>Lav lagerdemping:<\/strong> Utilstrekkelig demping kan ikke motvirke tetningskreftene.<\/li>\n<li><strong>Forhold med lav belastning:<\/strong> Lave belastninger p\u00e5 lagrene reduserer den effektive dempningen <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/journal-bearing\/\">journallager<\/a> kan tilby.<\/li>\n<\/ul>\n<h3>Rotoregenskaper<\/h3>\n<ul>\n<li><strong>Fleksible rotorer:<\/strong> en <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/flexible-rotor\/\">fleksibel rotor<\/a> ligger over sin <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/critical-speed\/\">kritiske hastigheter<\/a> er mer utsatt.<\/li>\n<li><strong>Systemer med lav demping:<\/strong> Minimal strukturell eller b\u00e6rende demping gj\u00f8r at det ikke er noe som kan absorbere energien.<\/li>\n<li><strong>H\u00f8yt lengde-til-diameter-forhold:<\/strong> Slanke rotorer er i seg selv mer utsatt for ustabilitet.<\/li>\n<\/ul>\n<h2>3. Diagnostiske kjennetegn<\/h2>\n<h3>Vibrasjonssignatur<\/h3>\n<p>En dampvirvel etterlater et karakteristisk m\u00f8nster som <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/vibration-analysis\/\">vibrasjonsanalyse<\/a> kan kjenne seg igjen i med sikkerhet:<\/p>\n<table border=\"1\" style=\"width:100%; border-collapse:collapse;\">\n<tr>\n<th>Parameter<\/th>\n<th>Karakteristisk<\/th>\n<\/tr>\n<tr>\n<td>Hyppighet<\/td>\n<td>Sub-synkron, vanligvis 0,3\u20130,6 ganger kj\u00f8rehastigheten, og g\u00e5r ofte i resonans med en egenfrekvens<\/td>\n<\/tr>\n<tr>\n<td>Amplitude<\/td>\n<td>H\u00f8y \u2014 ofte 5\u201320 ganger h\u00f8yere enn normal ubalansevibrasjon<\/td>\n<\/tr>\n<tr>\n<td>Utbrudd<\/td>\n<td>Plutselig, ved overskridelse av en terskelhastighet eller et terskeltrykk<\/td>\n<\/tr>\n<tr>\n<td>Hastighetsavhengighet<\/td>\n<td>Frekvensen kan l\u00e5se seg og nekte \u00e5 f\u00f8lge med p\u00e5 hastighetsendringer<\/td>\n<\/tr>\n<tr>\n<td>Bane<\/td>\n<td>Stor sirkul\u00e6r eller elliptisk, fremoverpresesjon<\/td>\n<\/tr>\n<tr>\n<td>Spektrum<\/td>\n<td>Dominant subsynkron topp<\/td>\n<\/tr>\n<\/table>\n<h3>Differensiering fra andre ustabiliteter<\/h3>\n<ul>\n<li><strong>vs. oljevirvel \/ oljepisk:<\/strong> Dampvirvel oppst\u00e5r i turbiner med labyrintpakninger, mens oljevirvel oppst\u00e5r i glatte <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/journal-bearing\/\">journallager<\/a>.<\/li>\n<li><strong>vs. ubalanse:<\/strong> dampvirvelen er subsynkron, mens <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/imbalance\/\">ubalanse<\/a> er en 1\u00d7 <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/synchronous-vibration\/\">synkron<\/a> respons.<\/li>\n<li><strong>vs. gni:<\/strong> Det kan oppst\u00e5 dampvirvler uten at det er noen kontakt, og frekvensen er mer stabil enn den uregelmessige vibrasjonen til en <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/rotor-rub\/\">rotor gni<\/a>.<\/li>\n<\/ul>\n<h2>4. Forebyggings- og avb\u00f8tende tiltak<\/h2>\n<p>De fleste tiltak retter seg mot ett av to m\u00e5l: enten \u00e5 redusere den destabiliserende virvelen ved kilden, eller \u00e5 tilf\u00f8re demping slik at rotoren kan absorbere den. Utformingen av tetningene tar for seg det f\u00f8rste, mens forbedringer av lagrene og driftsgrenser tar for seg det andre.<\/p>\n<h3>Modifikasjoner av tetningsdesign<\/h3>\n<ul>\n<li><strong>Antisvirvelanordninger (svirvelbremser):<\/strong> Faste vinger eller ledeplater plassert oppstr\u00f8ms for tetningslisten fjerner tangentialhastigheten fra den innstr\u00f8mmende str\u00f8mmen, noe som reduserer krysskoblingskraften betydelig. Dette er den mest effektive og vanligste l\u00f8sningen.<\/li>\n<li><strong>Vaffelpakninger:<\/strong> Ved \u00e5 erstatte de glatte labyrintkamrene med en bikakestruktur oppst\u00e5r det turbulens som demper virvelenergien og \u00f8ker den effektive dempingen i tetningsomr\u00e5det; dette er en utbredt l\u00f8sning i moderne gassturbiner.<\/li>\n<li><strong>\u00d8kte avstander mellom tetningene:<\/strong> St\u00f8rre radiale klaringer svekker den aerodynamiske kraften, men dette medf\u00f8rer \u00f8kt luftlekkasje og redusert turbinvirkningsgrad, s\u00e5 dette er vanligvis bare et midlertidig tiltak.<\/li>\n<li><strong>Spjeldtetninger:<\/strong> spesialdesignede tetninger \u2013 lommedempere og tetninger med hullm\u00f8nster \u2013 som demper samtidig som de tetter, og dermed tilf\u00f8rer en stabiliserende kraft som motvirker krysskoblingen.<\/li>\n<\/ul>\n<h3>Forbedringer av lagersystemet<\/h3>\n<ul>\n<li><strong>\u00d8k lagerdempingen:<\/strong> monter vippelager eller legg til en <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/squeeze-film-damper\/\">klemfilmspjeld<\/a>.<\/li>\n<li><strong>Forh\u00e5ndsspenning p\u00e5 lager:<\/strong> s\u00f8ker <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/preload\/\">forspenning<\/a> \u00f8ker b\u00e5de den effektive stivheten og dempingen.<\/li>\n<li><strong>Optimalisert lagerkonstruksjon:<\/strong> valg av lagertype og -konfigurasjon for \u00e5 oppn\u00e5 st\u00f8rst mulig stabilitetsmargin.<\/li>\n<\/ul>\n<h3>Driftskontroller<\/h3>\n<ul>\n<li><strong>Fartsgrenser:<\/strong> Hold driftshastigheten under ustabilitetsgrensen.<\/li>\n<li><strong>Laststyring:<\/strong> Unng\u00e5 \u00e5 kj\u00f8re med lett last, da dette reduserer dempingen i lagrene.<\/li>\n<li><strong>Trykkregulering:<\/strong> reduser trykkforskjellene i tetningene der prosessen tillater det.<\/li>\n<li><strong>Kontinuerlig overv\u00e5king:<\/strong> i sanntid <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/condition-monitoring\/\">tilstandsoverv\u00e5king<\/a> med egne subsynkrone alarmer.<\/li>\n<\/ul>\n<h2>5. Oppdagelse og beredskap<\/h2>\n<h3>Tidlige varseltegn<\/h3>\n<ul>\n<li>Det begynner \u00e5 dukke opp sm\u00e5 subsynkrone topper i vibrasjonen <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/spectrum\/\">spektrum<\/a>.<\/li>\n<li>Intermitterende h\u00f8yfrekvente komponenter.<\/li>\n<li>En gradvis \u00f8kning i den samlede <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/vibration-severity\/\">vibrasjonsintensitet<\/a> n\u00e5r hastigheten n\u00e6rmer seg terskelen.<\/li>\n<li>Endringer i <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/orbit\/\">bane<\/a> form registrert av n\u00e6rhetssensorer.<\/li>\n<\/ul>\n<h3>Tiltak som skal iverksettes umiddelbart ved p\u00e5visning av dampvirvler<\/h3>\n<ol>\n<li><strong>Reduser hastigheten:<\/strong> reduser hastigheten umiddelbart til under terskelverdien.<\/li>\n<li><strong>Ikke vent for lenge:<\/strong> amplituden kan \u00f8ke fra et akseptabelt niv\u00e5 til et \u00f8deleggende niv\u00e5 p\u00e5 30\u201360 sekunder.<\/li>\n<li><strong>N\u00f8davstengning:<\/strong> Sl\u00e5 av maskinen dersom det ikke er mulig \u00e5 redusere hastigheten eller dersom dette ikke er tilstrekkelig.<\/li>\n<li><strong>Dokumenter hendelsen:<\/strong> registrer hastigheten ved oppstart, frekvensen, toppamplituden og driftsforholdene.<\/li>\n<li><strong>Ikke start p\u00e5 nytt:<\/strong> Hold maskinen ute av drift inntil \u00e5rsaken er funnet og utbedret.<\/li>\n<\/ol>\n<h3>Hvor feltinstrumenter kommer til nytte<\/h3>\n<p>Fastmonterte beskyttelsessystemer s\u00f8rger for at maskinen kobles ut p\u00e5 et br\u00f8kdels sekund, men en b\u00e6rbar tokanalsanalysator er uvurderlig n\u00e5r man skal unders\u00f8ke \u00e5rsaken til ustabiliteten etter at maskinen er stoppet, samt ved oppstartskontroller i etterkant. Et instrument som <a href=\"https:\/\/vibromera.eu\/nb\/produkt\/balanset-1\/\">Balanset-1A<\/a> registrerer FFT-spektrumet for \u00e5 bekrefte den subsynkrone toppen, overv\u00e5ker amplituden under en kontrollert oppkj\u00f8ring og lar en ingeni\u00f8r f\u00f8rst utelukke en 1\u00d7 <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/imbalance\/\">ubalanse<\/a> problemet \u2014 ved \u00e5 m\u00e5le amplitude og fase ved driftshastighet \u2014 f\u00f8r man tilskriver vibrasjonen en reell selvutl\u00f8st tetningsustabilitet. \u00c5 skille mellom en vanlig ubalans, som <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/feltbalansering\/\">feltbalansering<\/a> \u00c5 skille mellom tilstander som kan behandles med ekte dampstr\u00f8m, og de som ikke kan det, er et avgj\u00f8rende tidlig diagnostisk skritt.<\/p>\n<h2>6. Bransjer, anvendelser og relaterte fenomener<\/h2>\n<p>Dampvirvel er spesielt viktig i:<\/p>\n<ul>\n<li><strong>Kraftproduksjon:<\/strong> store dampturbingeneratorer.<\/li>\n<li><strong>Petrokjemisk:<\/strong> dampdrevne kompressorer og pumper.<\/li>\n<li><strong>Gassturbiner:<\/strong> flymotorer og industrielle gassturbiner.<\/li>\n<li><strong>Prosessindustrien:<\/strong> alle h\u00f8yhastighets turbomaskiner utstyrt med labyrintpakninger.<\/li>\n<\/ul>\n<p>Den inng\u00e5r ogs\u00e5 i en gruppe av n\u00e6rt beslektede ustabiliteter. <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/oil-whirl\/\">Oljevirvel<\/a> har samme destabiliserende mekanisme, men i en sm\u00f8reoljefilm i stedet for i en tetning; <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/shaft-whip\/\">skaftpisk<\/a> viser samme frekvensl\u00e5sing ved egenfrekvensen; og alle tilh\u00f8rer den bredere kategorien av selvdrevne <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/rotor-instability\/\">rotorinstabilitet<\/a>. Selv om fremskritt innen tetningsteknologi og lagerkonstruksjon har redusert forekomsten av dette fenomenet, er det fortsatt avgj\u00f8rende \u00e5 forst\u00e5 dampvirvel for alle som konstruerer eller driver turbomaskineri med h\u00f8y hastighet og h\u00f8yt trykk.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/nb\/glossary\/\">\u2190 Tilbake til hovedindeksen<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>L\u00e6r om dampvirvel, en selveksitert vibrasjonsinstabilitet i dampturbiner for\u00e5rsaket av aerodynamiske krysskoblingskrefter i labyrinttetninger og bladspissklaringer.<\/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\/nb\/wp-json\/wp\/v2\/glossary\/255","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/glossary\/255\/revisions"}],"predecessor-version":[{"id":101413,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/glossary\/255\/revisions\/101413"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/media?parent=255"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/categories?post=255"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/tags?post=255"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}