{"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\/pt\/glossary\/steam-whirl\/","title":{"rendered":"O que \u00e9 o redemoinho de vapor? Instabilidade aerodin\u00e2mica em turbinas."},"content":{"rendered":"<h1>Compreender o turbilh\u00e3o de vapor em turbom\u00e1quinas<\/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\/pt\/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\/pt\/product\/balanset-1\/\" title=\"Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es 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 kit completo de balanceador port\u00e1til e analisador de vibra\u00e7\u00f5es\" 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\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/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\/pt\/product\/balanset-1\/\" title=\"Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es Balanset-1A\">Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es 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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/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=\"Adiciona ao carrinho: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/product\/vibration-sensor\/\" title=\"Sensor de vibra\u00e7\u00e3o\">\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=\"Grande plano do sensor de vibra\u00e7\u00e3o 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\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/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\/pt\/product\/vibration-sensor\/\" title=\"Sensor de vibra\u00e7\u00e3o\">Sensor de vibra\u00e7\u00e3o<\/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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/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=\"Adiciona ao carrinho: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Sensor \u00f3tico (tac\u00f3metro laser)\">\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=\"Sensor \u00f3tico (tac\u00f3metro laser)\" 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\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/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\/pt\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Sensor \u00f3tico (tac\u00f3metro laser)\">Sensor \u00f3tico (tac\u00f3metro laser)<\/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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/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=\"Adiciona ao carrinho: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/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=\"Kit de balanceamento de rotor Vibromera: estojo de transporte, condicionador de sinal multicanal, analisador port\u00e1til, base magn\u00e9tica, sensores de vibra\u00e7\u00e3o e cabos espiralados.\" 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\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/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\/pt\/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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/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=\"Adiciona ao carrinho: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/product\/magnet-stand\/\" title=\"Suporte magn\u00e9tico 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=\"Base magn\u00e9tica.\" 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\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/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\/pt\/product\/magnet-stand\/\" title=\"Suporte magn\u00e9tico Insize-60-kgf\">Suporte magn\u00e9tico 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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/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=\"Adiciona ao carrinho: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/product\/reflective-tape\/\" title=\"Fita refletora\">\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=\"Fita refletora\" 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\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/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\/pt\/product\/reflective-tape\/\" title=\"Fita refletora\">Fita refletora<\/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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/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=\"Adiciona ao carrinho: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/product\/dynamic-balancer-balanset-1a\/\" title=\"Balanceador din\u00e2mico &quot;Balanset-1A&quot; OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Conte\u00fado do kit Balanset-1A com unidade de interface, sensores, tac\u00f3metro e acess\u00f3rios\" 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\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/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\/pt\/product\/dynamic-balancer-balanset-1a\/\" title=\"Balanceador din\u00e2mico &quot;Balanset-1A&quot; OEM\">Balanceador din\u00e2mico \"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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/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=\"Adiciona ao carrinho: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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>Redemoinho de vapor<\/strong> \u2014 tamb\u00e9m conhecida como instabilidade de acoplamento cruzado aerodin\u00e2mico ou \u00abseal whirl\u00bb \u2014 \u00e9 uma <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/self-excited-vibration\/\">vibra\u00e7\u00e3o autoexcitada<\/a> que surge nas turbinas a vapor e a g\u00e1s quando as for\u00e7as aerodin\u00e2micas no interior das veda\u00e7\u00f5es labir\u00ednticas, das folgas nas pontas das p\u00e1s ou de outras passagens anulares geram uma for\u00e7a tangencial desestabilizadora sobre o <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/rotor\/\">rotor<\/a>. Como <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/oil-whirl\/\">redemoinho de \u00f3leo<\/a> nos rolamentos hidrodin\u00e2micos, trata-se de uma forma de <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/rotor-instability\/\">instabilidade do rotor<\/a> no qual a energia \u00e9 continuamente extra\u00edda do fluxo constante de vapor ou g\u00e1s e convertida em movimento orbital do eixo. O resultado \u00e9 uma amplitude elevada <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/sub-synchronous\/\">subs\u00edncrono<\/a> <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/vibration\/\">vibra\u00e7\u00e3o<\/a> a uma frequ\u00eancia pr\u00f3xima de uma das frequ\u00eancias naturais do rotor <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/natural-frequency\/\">frequ\u00eancias naturais<\/a> \u2014 e, se n\u00e3o for detetado e corrigido rapidamente, pode levar a uma avaria catastr\u00f3fica da m\u00e1quina.<\/p>\n<h2>1. Mecanismo f\u00edsico<\/h2>\n<p>O turbilh\u00e3o de vapor \u00e9, essencialmente, uma intera\u00e7\u00e3o fluido-estrutura que ocorre nas estreitas folgas das veda\u00e7\u00f5es das turbinas. Desenvolve-se em tr\u00eas fases interligadas.<\/p>\n<h3>Folgas das veda\u00e7\u00f5es labir\u00ednticas<\/h3>\n<ul>\n<li>O vapor ou g\u00e1s flui atrav\u00e9s de passagens anulares estreitas entre componentes de veda\u00e7\u00e3o rotativos e estacion\u00e1rios.<\/li>\n<li>Existe um grande diferencial de press\u00e3o nas veda\u00e7\u00f5es \u2014 frequentemente entre 50 e 200 bar em m\u00e1quinas de grande porte.<\/li>\n<li>As folgas radiais s\u00e3o reduzidas, variando normalmente entre 0,2 e 0,5 mm.<\/li>\n<li>O fluxo adquire um movimento girat\u00f3rio, uma componente de velocidade tangencial, \u00e0 medida que passa pelos dentes da veda\u00e7\u00e3o.<\/li>\n<\/ul>\n<h3>Acoplamento aerodin\u00e2mico cruzado<\/h3>\n<p>A instabilidade surge no momento em que o rotor se desvia da sua posi\u00e7\u00e3o central:<\/p>\n<ul>\n<li>A folga torna-se assim\u00e9trica \u2014 menor de um lado e maior do lado oposto.<\/li>\n<li>A distribui\u00e7\u00e3o do fluxo e da press\u00e3o em torno da veda\u00e7\u00e3o torna-se n\u00e3o uniforme.<\/li>\n<li>A for\u00e7a aerodin\u00e2mica l\u00edquida aumenta em <em>tangencial<\/em> componente que atua perpendicularmente ao deslocamento, em vez de se opor a ele.<\/li>\n<li>Esta for\u00e7a tangencial comporta-se como uma &#8220;rigidez negativa <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/stiffness\/\">rigidez<\/a>&#8220;, empurrando o rotor ao longo da sua \u00f3rbita, em vez de o trazer de volta ao centro.<\/li>\n<\/ul>\n<h3>Vibra\u00e7\u00e3o autoexcitada<\/h3>\n<ul>\n<li>A for\u00e7a tangencial impulsiona o rotor para a frente <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/whirl\/\">precess\u00e3o<\/a> \u00f3rbita.<\/li>\n<li>A frequ\u00eancia orbital estabiliza-se perto de uma frequ\u00eancia natural, sendo, por isso, subs\u00edncrona.<\/li>\n<li>A energia \u00e9 continuamente extra\u00edda do fluxo de vapor para manter o movimento.<\/li>\n<li>A amplitude aumenta at\u00e9 ser limitada pelo espa\u00e7o dispon\u00edvel \u2014 ou por uma avaria na m\u00e1quina.<\/li>\n<\/ul>\n<h2>2. Condi\u00e7\u00f5es que favorecem a forma\u00e7\u00e3o de redemoinhos de vapor<\/h2>\n<p>O facto de uma determinada m\u00e1quina se tornar inst\u00e1vel depende do equil\u00edbrio entre as for\u00e7as de veda\u00e7\u00e3o desestabilizadoras e a <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/damping\/\">amortecimento<\/a>. Tr\u00eas grupos de fatores influenciam esse equil\u00edbrio.<\/p>\n<h3>Fatores Geom\u00e9tricos<\/h3>\n<ul>\n<li><strong>Folgas reduzidas nas veda\u00e7\u00f5es:<\/strong> Distan\u00e7as menores geram for\u00e7as aerodin\u00e2micas mais intensas.<\/li>\n<li><strong>Comprimentos de veda\u00e7\u00e3o longos:<\/strong> um maior n\u00famero de dentes da veda\u00e7\u00e3o ou sec\u00e7\u00f5es mais longas da veda\u00e7\u00e3o aumentam a for\u00e7a desestabilizadora.<\/li>\n<li><strong>Elevada velocidade de rota\u00e7\u00e3o do fluxo (swirl):<\/strong> Um fluxo que entra na veda\u00e7\u00e3o com uma forte componente tangencial \u00e9 especialmente desestabilizador.<\/li>\n<li><strong>Di\u00e2metros grandes das veda\u00e7\u00f5es:<\/strong> Um raio maior amplifica o momento gerado pela for\u00e7a aerodin\u00e2mica.<\/li>\n<\/ul>\n<h3>Condi\u00e7\u00f5es de opera\u00e7\u00e3o<\/h3>\n<ul>\n<li><strong>Grandes diferen\u00e7as de press\u00e3o:<\/strong> uma maior queda de press\u00e3o na veda\u00e7\u00e3o aumenta a for\u00e7a.<\/li>\n<li><strong>Elevada velocidade do rotor:<\/strong> tanto os efeitos centr\u00edfugos como a velocidade de pr\u00e9-rota\u00e7\u00e3o aumentam com a velocidade.<\/li>\n<li><strong>Baixo amortecimento do rolamento:<\/strong> Um amortecimento insuficiente n\u00e3o consegue contrariar as for\u00e7as de veda\u00e7\u00e3o.<\/li>\n<li><strong>Condi\u00e7\u00f5es de carga leve:<\/strong> cargas reduzidas nos rolamentos diminuem o amortecimento efetivo <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/journal-bearing\/\">chumaceira de deslizamento<\/a> pode fornecer.<\/li>\n<\/ul>\n<h3>Caracter\u00edsticas do rotor<\/h3>\n<ul>\n<li><strong>Rotores flex\u00edveis:<\/strong> um <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/flexible-rotor\/\">rotor flex\u00edvel<\/a> funcionando acima do seu <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/critical-speed\/\">velocidades cr\u00edticas<\/a> \u00e9 mais suscet\u00edvel.<\/li>\n<li><strong>Sistemas de baixo amortecimento:<\/strong> Um amortecimento estrutural ou de rolamento m\u00ednimo n\u00e3o deixa nada para absorver a energia.<\/li>\n<li><strong>Elevada rela\u00e7\u00e3o comprimento\/di\u00e2metro:<\/strong> Os rotores esbeltos s\u00e3o, por natureza, mais propensos \u00e0 instabilidade.<\/li>\n<\/ul>\n<h2>3. Caracter\u00edsticas diagn\u00f3sticas<\/h2>\n<h3>Assinatura de Vibra\u00e7\u00e3o<\/h3>\n<p>O redemoinho de vapor deixa um padr\u00e3o caracter\u00edstico que <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/vibration-analysis\/\">an\u00e1lise de vibra\u00e7\u00e3o<\/a> pode identificar com seguran\u00e7a:<\/p>\n<table border=\"1\" style=\"width:100%; border-collapse:collapse;\">\n<tr>\n<th>Par\u00e2metro<\/th>\n<th>Caracter\u00edstica<\/th>\n<\/tr>\n<tr>\n<td>Frequ\u00eancia<\/td>\n<td>Subs\u00edncrono, normalmente entre 0,3 e 0,6 vezes a velocidade de funcionamento, frequentemente fixando-se numa frequ\u00eancia natural<\/td>\n<\/tr>\n<tr>\n<td>Amplitude<\/td>\n<td>Elevado \u2014 frequentemente 5 a 20 vezes a vibra\u00e7\u00e3o de desequil\u00edbrio normal<\/td>\n<\/tr>\n<tr>\n<td>In\u00edcio<\/td>\n<td>Repentino, acima de um determinado limite de velocidade ou press\u00e3o<\/td>\n<\/tr>\n<tr>\n<td>Depend\u00eancia da velocidade<\/td>\n<td>A frequ\u00eancia pode bloquear-se e deixar de acompanhar as altera\u00e7\u00f5es de velocidade<\/td>\n<\/tr>\n<tr>\n<td>\u00d3rbita<\/td>\n<td>Grande precess\u00e3o circular ou el\u00edptica, para a frente<\/td>\n<\/tr>\n<tr>\n<td>Espetro<\/td>\n<td>Pico sub-s\u00edncrono dominante<\/td>\n<\/tr>\n<\/table>\n<h3>Diferencia\u00e7\u00e3o de outras instabilidades<\/h3>\n<ul>\n<li><strong>vs. redemoinho de \u00f3leo \/ chicote:<\/strong> O redemoinho de vapor ocorre em turbinas com vedantes de labirinto, enquanto o redemoinho de \u00f3leo ocorre em mancais lisos <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/journal-bearing\/\">mancais de deslizamento<\/a>.<\/li>\n<li><strong>vs. desequil\u00edbrio:<\/strong> o redemoinho de vapor \u00e9 subs\u00edncrono, enquanto <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/imbalance\/\">desequil\u00edbrio<\/a> \u00e9 um 1\u00d7 <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/synchronous-vibration\/\">s\u00edncrono<\/a> resposta.<\/li>\n<li><strong>vs. fric\u00e7\u00e3o:<\/strong> O redemoinho de vapor pode ocorrer sem qualquer contacto, e a sua frequ\u00eancia \u00e9 mais est\u00e1vel do que a vibra\u00e7\u00e3o irregular de um <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/rotor-rub\/\">fric\u00e7\u00e3o do rotor<\/a>.<\/li>\n<\/ul>\n<h2>4. M\u00e9todos de preven\u00e7\u00e3o e mitiga\u00e7\u00e3o<\/h2>\n<p>A maioria das medidas de corre\u00e7\u00e3o visa um de dois objetivos: reduzir o redemoinho desestabilizador na sua origem ou aumentar o amortecimento para que o rotor o possa absorver. O design das veda\u00e7\u00f5es aborda o primeiro objetivo; as melhorias nos rolamentos e os limites operacionais abordam o segundo.<\/p>\n<h3>Modifica\u00e7\u00f5es no projeto da veda\u00e7\u00e3o<\/h3>\n<ul>\n<li><strong>Dispositivos anti-v\u00f3rtice (freios de v\u00f3rtice):<\/strong> As aletas ou defletores fixos, colocados a montante da veda\u00e7\u00e3o, eliminam a velocidade tangencial do fluxo de entrada, reduzindo drasticamente a for\u00e7a de acoplamento cruzado. Esta \u00e9 a solu\u00e7\u00e3o mais eficaz e mais comum.<\/li>\n<li><strong>Juntas em favo de mel:<\/strong> A substitui\u00e7\u00e3o das superf\u00edcies lisas do labirinto por uma estrutura alveolar gera turbul\u00eancia que dissipa a energia dos redemoinhos e aumenta o amortecimento efetivo na zona da veda\u00e7\u00e3o; amplamente utilizada nas turbinas a g\u00e1s modernas.<\/li>\n<li><strong>Maior folga nas veda\u00e7\u00f5es:<\/strong> As folgas radiais maiores enfraquecem a for\u00e7a aerodin\u00e2mica, mas a custo de um aumento das fugas e de uma redu\u00e7\u00e3o da efici\u00eancia da turbina, pelo que esta medida \u00e9, normalmente, apenas tempor\u00e1ria.<\/li>\n<li><strong>Vedantes amortecedores:<\/strong> vedantes concebidos especificamente para o efeito \u2014 vedantes de amortecimento de bolso e vedantes com padr\u00e3o de orif\u00edcios \u2014 que proporcionam amortecimento sem comprometer a veda\u00e7\u00e3o, acrescentando uma for\u00e7a estabilizadora para contrariar o acoplamento cruzado.<\/li>\n<\/ul>\n<h3>Melhorias no sistema de mancais<\/h3>\n<ul>\n<li><strong>Aumentar o amortecimento do rolamento:<\/strong> instalar rolamentos de almofada basculante ou adicionar um <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/squeeze-film-damper\/\">amortecedor de pel\u00edcula de aperto<\/a>.<\/li>\n<li><strong>Pr\u00e9-carga do rolamento:<\/strong> aplicando <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/preload\/\">pr\u00e9-carga<\/a> aumenta tanto a rigidez efetiva como o amortecimento.<\/li>\n<li><strong>Conce\u00e7\u00e3o otimizada dos rolamentos:<\/strong> selecionar o tipo e a configura\u00e7\u00e3o do rolamento para obter a m\u00e1xima margem de estabilidade.<\/li>\n<\/ul>\n<h3>Controles Operacionais<\/h3>\n<ul>\n<li><strong>Limita\u00e7\u00f5es de velocidade:<\/strong> manter a velocidade de funcionamento abaixo do limiar de instabilidade.<\/li>\n<li><strong>Gest\u00e3o da carga:<\/strong> evite o funcionamento com cargas leves, que reduz a capacidade de amortecimento dos rolamentos.<\/li>\n<li><strong>Controlo da press\u00e3o:<\/strong> reduzir as diferen\u00e7as de press\u00e3o nas veda\u00e7\u00f5es, sempre que o processo o permitir.<\/li>\n<li><strong>Monitoriza\u00e7\u00e3o cont\u00ednua:<\/strong> em tempo real <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/condition-monitoring\/\">monitoriza\u00e7\u00e3o de condi\u00e7\u00f5es<\/a> com alarmes subs\u00edncronos espec\u00edficos.<\/li>\n<\/ul>\n<h2>5. Detec\u00e7\u00e3o e resposta a emerg\u00eancias<\/h2>\n<h3>Sinais de alerta precoce<\/h3>\n<ul>\n<li>Come\u00e7am a surgir pequenos picos subs\u00edncronos na vibra\u00e7\u00e3o <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/spectrum\/\">espetro<\/a>.<\/li>\n<li>Componentes intermitentes de alta frequ\u00eancia.<\/li>\n<li>Um aumento gradual do n\u00edvel geral <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/vibration-severity\/\">Intensidade de vibra\u00e7\u00e3o<\/a> \u00e0 medida que a velocidade se aproxima do limite.<\/li>\n<li>Altera\u00e7\u00f5es no <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/orbit\/\">\u00f3rbita<\/a> forma captada por sensores de proximidade.<\/li>\n<\/ul>\n<h3>Medidas imediatas a tomar quando se deteta um v\u00f3rtice de vapor<\/h3>\n<ol>\n<li><strong>Reduzir a velocidade:<\/strong> reduzir imediatamente a velocidade para um valor inferior ao limite.<\/li>\n<li><strong>N\u00e3o adiar:<\/strong> A amplitude pode passar de aceit\u00e1vel a destrutiva em 30 a 60 segundos.<\/li>\n<li><strong>Paragem de emerg\u00eancia:<\/strong> desligar a m\u00e1quina se a redu\u00e7\u00e3o da velocidade for insuficiente ou imposs\u00edvel.<\/li>\n<li><strong>Registe o evento:<\/strong> registe a velocidade inicial, a frequ\u00eancia, a amplitude m\u00e1xima e as condi\u00e7\u00f5es de funcionamento.<\/li>\n<li><strong>N\u00e3o reiniciar:<\/strong> mantenha a m\u00e1quina desligada at\u00e9 que a causa principal seja identificada e corrigida.<\/li>\n<\/ol>\n<h3>Onde se utilizam os instrumentos de campo<\/h3>\n<p>Os sistemas de prote\u00e7\u00e3o instalados de forma permanente asseguram o desligamento instant\u00e2neo, mas um analisador port\u00e1til de dois canais \u00e9 indispens\u00e1vel para investigar a instabilidade assim que a m\u00e1quina \u00e9 parada e para as verifica\u00e7\u00f5es de coloca\u00e7\u00e3o em servi\u00e7o posteriores. Um instrumento como o <a href=\"https:\/\/vibromera.eu\/pt\/produto\/balanset-1\/\">Balanset-1A<\/a> regista o espectro FFT para confirmar o pico subs\u00edncrono, monitoriza a sua amplitude durante um aumento de velocidade controlado e permite que um engenheiro descarte primeiro um 1\u00d7 <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/imbalance\/\">desequil\u00edbrio<\/a> problema \u2014 atrav\u00e9s da medi\u00e7\u00e3o da amplitude e da fase \u00e0 velocidade de funcionamento \u2014 antes de atribuir a vibra\u00e7\u00e3o a uma verdadeira instabilidade autoexcitada da veda\u00e7\u00e3o. Distinguir um desequil\u00edbrio comum, que <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/equilibrio-de-campos\/\">equilibragem no local<\/a> pode corrigir, de um verdadeiro v\u00f3rtice de vapor, que n\u00e3o pode, constitui um passo fundamental no diagn\u00f3stico precoce.<\/p>\n<h2>6. Ind\u00fastrias, aplica\u00e7\u00f5es e fen\u00f3menos relacionados<\/h2>\n<p>O turbilh\u00e3o de vapor \u00e9 particularmente preocupante em:<\/p>\n<ul>\n<li><strong>Produ\u00e7\u00e3o de eletricidade:<\/strong> grandes turbinas a vapor com geradores.<\/li>\n<li><strong>Petroqu\u00edmica:<\/strong> compressores e bombas a vapor.<\/li>\n<li><strong>Turbinas a g\u00e1s:<\/strong> motores de aeronaves e turbinas a g\u00e1s industriais.<\/li>\n<li><strong>Ind\u00fastrias de transforma\u00e7\u00e3o:<\/strong> qualquer turbom\u00e1quina de alta velocidade equipada com vedantes de labirinto.<\/li>\n<\/ul>\n<p>Faz tamb\u00e9m parte de um conjunto de instabilidades intimamente relacionadas. <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/oil-whirl\/\">Redemoinho de \u00f3leo<\/a> partilha o mesmo mecanismo desestabilizador, mas numa pel\u00edcula de \u00f3leo do rolamento, em vez de numa veda\u00e7\u00e3o; <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/shaft-whip\/\">chicoteamento do eixo<\/a> apresenta o mesmo bloqueio de frequ\u00eancia na frequ\u00eancia natural; e todos eles fazem parte da categoria mais ampla dos autoexcitados <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/rotor-instability\/\">instabilidade do rotor<\/a>. Embora os avan\u00e7os na tecnologia das juntas e na conce\u00e7\u00e3o dos rolamentos tenham reduzido a frequ\u00eancia com que este fen\u00f3meno ocorre, compreender o v\u00f3rtice de vapor continua a ser essencial para qualquer pessoa envolvida na conce\u00e7\u00e3o ou opera\u00e7\u00e3o de turbom\u00e1quinas de alta velocidade e alta press\u00e3o.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/\">\u2190 Voltar ao \u00edndice principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Saiba mais sobre o turbilh\u00e3o de vapor, uma instabilidade vibrat\u00f3ria autoexcitada em turbinas a vapor causada por for\u00e7as de acoplamento cruzado aerodin\u00e2mico em veda\u00e7\u00f5es labir\u00ednticas e folgas na ponta das p\u00e1s.<\/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\/pt\/wp-json\/wp\/v2\/glossary\/255","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/255\/revisions"}],"predecessor-version":[{"id":101413,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/255\/revisions\/101413"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/media?parent=255"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/categories?post=255"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/tags?post=255"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}