{"id":207,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/recirculation\/"},"modified":"2026-05-23T22:53:11","modified_gmt":"2026-05-23T22:53:11","slug":"recirculation","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/pt\/glossary\/recirculation\/","title":{"rendered":"O que \u00e9 recircula\u00e7\u00e3o? Instabilidade da bomba de baixo fluxo"},"content":{"rendered":"<h1>Compreender a recircula\u00e7\u00e3o em bombas<\/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\/207?add-to-cart=986\" data-quantity=\"1\" data-product_id=\"986\" data-product_sku=\"BS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"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\/207?add-to-cart=986\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_986\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"986\" data-product_sku=\"BS-1\" aria-label=\"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\/207?add-to-cart=1820\" data-quantity=\"1\" data-product_id=\"1820\" data-product_sku=\"VS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"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\/207?add-to-cart=1820\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1820\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1820\" data-product_sku=\"VS-1\" aria-label=\"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\/207?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"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\/207?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"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\/207?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"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\/207?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"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\/207?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"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\/207?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"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\/207?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"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\/207?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"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\/207?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"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\/207?add-to-cart=4193\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_4193\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" aria-label=\"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>Recircula\u00e7\u00e3o<\/strong> trata-se de uma instabilidade de escoamento que se desenvolve em bombas centr\u00edfugas e ventiladores quando estes funcionam a caudais muito abaixo do seu ponto de projeto \u2014 o ponto de melhor efici\u00eancia, ou BEP. Em caudais baixos, parte do fluido inverte a dire\u00e7\u00e3o, fluindo para tr\u00e1s desde a zona de descarga em dire\u00e7\u00e3o \u00e0 suc\u00e7\u00e3o e formando padr\u00f5es de recircula\u00e7\u00e3o inst\u00e1veis na entrada ou na sa\u00edda do impulsor. O resultado s\u00e3o pulsa\u00e7\u00f5es de baixa frequ\u00eancia <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/vibration\/\">vibra\u00e7\u00e3o<\/a> pulsa\u00e7\u00e3o (normalmente 0,2\u20130,8 vezes a velocidade de rota\u00e7\u00e3o e, portanto, <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/sub-synchronous\/\">subs\u00edncrono<\/a>), ru\u00eddo, perda de efici\u00eancia e \u2014 em casos graves \u2014 danos mec\u00e2nicos graves decorrentes de cargas c\u00edclicas, <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/cavitation\/\">cavita\u00e7\u00e3o<\/a> e aquecimento. Esta \u00e9 uma das formas mais destrutivas de operar uma bomba, e evit\u00e1-la \u00e9 fundamental para <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/centrifugal-pump-defects\/\">fiabilidade da bomba<\/a>.<\/p>\n<h2>1. Defini\u00e7\u00e3o: Instabilidade hidr\u00e1ulica de baixo caudal<\/h2>\n<p>Um impulsor \u00e9 concebido de forma a que o fluido entre e saia das suas aletas em \u00e2ngulos espec\u00edficos no ponto de efici\u00eancia m\u00e1xima (BEP). Se se reduzir o caudal para um valor muito abaixo desse ponto, os tri\u00e2ngulos de velocidade deixam de corresponder \u00e0 geometria das aletas: o \u00e2ngulo de incid\u00eancia fica completamente errado, o escoamento separa-se das aletas e o fluido que o impulsor j\u00e1 tinha impulsionado reflui para tr\u00e1s. Estas correntes invertidas e turbulentas constituem a recircula\u00e7\u00e3o. Uma vez que as for\u00e7as hidr\u00e1ulicas inst\u00e1veis <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/hydraulic-forces\/\">for\u00e7as hidr\u00e1ulicas<\/a> podem ser enormes; a recircula\u00e7\u00e3o pode provocar falhas nos rolamentos, danos nas veda\u00e7\u00f5es e no eixo <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/fatigue\/\">fadiga<\/a> e at\u00e9 mesmo a falha estrutural do pr\u00f3prio impulsor. Compreender e prevenir esta situa\u00e7\u00e3o \u00e9 fundamental para a longevidade da bomba.<\/p>\n<h2>2. Tipos de recircula\u00e7\u00e3o<\/h2>\n<h3>Recircula\u00e7\u00e3o por suc\u00e7\u00e3o<\/h3>\n<p>Ocorre na entrada do impulsor (lado da suc\u00e7\u00e3o):<\/p>\n<ul>\n<li><strong>Mecanismo:<\/strong> em condi\u00e7\u00f5es de baixo caudal, o fluido que entra pelo orif\u00edcio do impulsor chega com um \u00e2ngulo de escoamento incorreto.<\/li>\n<li><strong>Separa\u00e7\u00e3o:<\/strong> o fluxo separa-se das superf\u00edcies de suc\u00e7\u00e3o das aletas.<\/li>\n<li><strong>Reverse flow:<\/strong> o fluido separado reflui para tr\u00e1s, saindo pela abertura do impulsor.<\/li>\n<li><strong>In\u00edcio:<\/strong> normalmente a 60\u201370 % do caudal BEP.<\/li>\n<li><strong>Localiza\u00e7\u00e3o:<\/strong> concentradas perto das prote\u00e7\u00f5es do impulsor.<\/li>\n<\/ul>\n<h3>Recircula\u00e7\u00e3o da descarga<\/h3>\n<p>Ocorre na descarga do impulsor (na sa\u00edda):<\/p>\n<ul>\n<li><strong>Mecanismo:<\/strong> O fluido de descarga de alta press\u00e3o flui na dire\u00e7\u00e3o oposta, para a periferia do impulsor.<\/li>\n<li><strong>Caminho:<\/strong> atrav\u00e9s de aberturas de folga, tais como an\u00e9is de desgaste e folgas laterais.<\/li>\n<li><strong>Mistura:<\/strong> o fluxo recirculado mistura-se com o fluxo principal, gerando <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/flow-turbulence\/\">turbul\u00eancia<\/a>.<\/li>\n<li><strong>In\u00edcio:<\/strong> normalmente entre 40 % e 60 % do caudal BEP.<\/li>\n<li><strong>Severidade:<\/strong> Geralmente mais prejudicial do que a recircula\u00e7\u00e3o por suc\u00e7\u00e3o.<\/li>\n<\/ul>\n<h3>Recircula\u00e7\u00e3o combinada<\/h3>\n<ul>\n<li>A recircula\u00e7\u00e3o tanto na suc\u00e7\u00e3o como na descarga ocorre simultaneamente.<\/li>\n<li>Ocorre em caudais muito baixos, inferiores a cerca de 40 % do BEP.<\/li>\n<li>Provoca a vibra\u00e7\u00e3o mais intensa e apresenta o maior potencial de danos.<\/li>\n<li>Deve ser evitado atrav\u00e9s da prote\u00e7\u00e3o contra caudal m\u00ednimo.<\/li>\n<\/ul>\n<h2>3. Assinatura de vibra\u00e7\u00e3o<\/h2>\n<h3>Padr\u00e3o caracter\u00edstico<\/h3>\n<ul>\n<li><strong>Frequ\u00eancia:<\/strong> subs\u00edncrono, normalmente entre 0,2 e 0,8 vezes a velocidade de rota\u00e7\u00e3o.<\/li>\n<li><strong>Exemplo:<\/strong> uma bomba a 1750 RPM que apresenta pulsa\u00e7\u00f5es de 10\u201320 Hz.<\/li>\n<li><strong>Amplitude:<\/strong> pode atingir 2 a 5 vezes a vibra\u00e7\u00e3o normal de funcionamento.<\/li>\n<li><strong>Inst\u00e1vel:<\/strong> tanto a frequ\u00eancia como a amplitude variam, em vez de se manterem constantes.<\/li>\n<li><strong>Componente aleat\u00f3rio:<\/strong> um aumento de banda larga devido \u00e0 turbul\u00eancia que se superp\u00f5e.<\/li>\n<\/ul>\n<p>Este car\u00e1ter err\u00e1tico e ass\u00edncrono \u00e9 o que distingue a recircula\u00e7\u00e3o do ritmo constante de 1\u00d7 <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/unbalance\/\">desequil\u00edbrio<\/a> e o pico a frequencia de passagem das pas de <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/vane-passing-frequency\/\">frequ\u00eancia de passagem da palheta<\/a>; para o fazer, \u00e9 normalmente necess\u00e1rio analisar tanto o <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/spectrum\/\">espetro<\/a> e o <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/time-waveform\/\">forma de onda temporal<\/a>.<\/p>\n<h3>Depend\u00eancia do fluxo<\/h3>\n<ul>\n<li><strong>High flow:<\/strong> sem recircula\u00e7\u00e3o, baixa vibra\u00e7\u00e3o.<\/li>\n<li><strong>Caudal moderado (80\u2013100 % do caudal nominal):<\/strong> recircula\u00e7\u00e3o m\u00ednima, vibra\u00e7\u00e3o aceit\u00e1vel.<\/li>\n<li><strong>Baixo caudal (50\u201370 % do caudal nominal):<\/strong> A recircula\u00e7\u00e3o por suc\u00e7\u00e3o come\u00e7a e a vibra\u00e7\u00e3o aumenta.<\/li>\n<li><strong>Caudal muito baixo (&lt; 50 % do BEP):<\/strong> recircula\u00e7\u00e3o intensa e vibra\u00e7\u00e3o muito elevada.<\/li>\n<li><strong>Desligamento:<\/strong> m\u00e1xima recircula\u00e7\u00e3o, m\u00e1xima vibra\u00e7\u00e3o e a taxa de danos mais r\u00e1pida.<\/li>\n<\/ul>\n<h3>Indicadores adicionais<\/h3>\n<ul>\n<li>A high <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/axial-vibration\/\">vibra\u00e7\u00e3o axial<\/a> componente.<\/li>\n<li>Aumento do ru\u00eddo \u2014 um rugido ou um estrondo.<\/li>\n<li>Perda de desempenho, com a altura manom\u00e9trica e o caudal a ficarem abaixo da curva.<\/li>\n<li>Aumento da temperatura devido \u00e0s perdas hidr\u00e1ulicas que s\u00e3o transferidas para o fluido.<\/li>\n<\/ul>\n<h2>4. Consequ\u00eancias e danos<\/h2>\n<h3>Efeitos imediatos<\/h3>\n<ul>\n<li><strong>Vibra\u00e7\u00e3o intensa:<\/strong> pode ultrapassar os limites de alarme em poucos minutos.<\/li>\n<li><strong>Ru\u00eddo:<\/strong> um rugido alto e turbulento.<\/li>\n<li><strong>Perda de efici\u00eancia:<\/strong> consumo de energia elevado para o caudal efetivamente fornecido.<\/li>\n<li><strong>Aquecimento:<\/strong> perdas hidraulicas convertidas em calor na carcaca.<\/li>\n<\/ul>\n<h3>Danos mec\u00e2nicos<\/h3>\n<ul>\n<li><strong>Falha do rolamento:<\/strong> cargas c\u00edclicas elevadas aceleram o desgaste dos rolamentos <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/bearing-wear\/\">desgaste<\/a>.<\/li>\n<li><strong>Danos nos selos:<\/strong> a vibra\u00e7\u00e3o e as pulsa\u00e7\u00f5es de press\u00e3o destroem <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/seal-defects\/\">veda\u00e7\u00f5es mec\u00e2nicas<\/a>.<\/li>\n<li><strong>Fadiga do veio:<\/strong> tens\u00e3o de flex\u00e3o alternante resultante das for\u00e7as hidr\u00e1ulicas inst\u00e1veis.<\/li>\n<li><strong>Danos no impulsor:<\/strong> vane <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/impeller-defects\/\">fissura\u00e7\u00e3o por fadiga<\/a> devido \u00e0 carga c\u00edclica.<\/li>\n<\/ul>\n<h3>Danos hidr\u00e1ulicos<\/h3>\n<ul>\n<li><strong>Cavita\u00e7\u00e3o:<\/strong> As zonas de recircula\u00e7\u00e3o s\u00e3o propensas \u00e0 cavita\u00e7\u00e3o, uma vez que a press\u00e3o local desce abaixo da press\u00e3o de vapor.<\/li>\n<li><strong>Eros\u00e3o:<\/strong> O fluxo de recircula\u00e7\u00e3o a alta velocidade provoca a eros\u00e3o das superf\u00edcies.<\/li>\n<li><strong>Cavita\u00e7\u00e3o por v\u00f3rtice:<\/strong> os v\u00f3rtices nas zonas de recircula\u00e7\u00e3o sofrem cavita\u00e7\u00e3o nos seus n\u00facleos de baixa press\u00e3o.<\/li>\n<\/ul>\n<h2>5. Detec\u00e7\u00e3o e diagn\u00f3stico<\/h2>\n<h3>An\u00e1lise de vibra\u00e7\u00e3o<\/h3>\n<ul>\n<li>Procure componentes subs\u00edncronos na faixa de 0,2\u20130,8\u00d7.<\/li>\n<li>Realize testes com v\u00e1rios caudais para mapear o comportamento.<\/li>\n<li>Identificar o caudal a partir do qual as pulsa\u00e7\u00f5es come\u00e7am \u2014 o in\u00edcio da recircula\u00e7\u00e3o.<\/li>\n<li>Compare os resultados com as previs\u00f5es da curva de desempenho da bomba.<\/li>\n<\/ul>\n<h3>Teste de desempenho<\/h3>\n<ul>\n<li>Me\u00e7a a curva real de press\u00e3o-caudal.<\/li>\n<li>Compare com a curva de projeto.<\/li>\n<li>Um desvio em condi\u00e7\u00f5es de baixo caudal indica recircula\u00e7\u00e3o.<\/li>\n<li>O consumo de energia superior ao previsto pela curva constitui uma prova corroborante.<\/li>\n<\/ul>\n<h3>Monitoriza\u00e7\u00e3o ac\u00fastica<\/h3>\n<ul>\n<li>Um ru\u00eddo caracter\u00edstico, turbulento e estrondoso.<\/li>\n<li>Um aumento do ru\u00eddo de banda larga.<\/li>\n<li>Frequentemente aud\u00edvel e palp\u00e1vel na carca\u00e7a da bomba.<\/li>\n<\/ul>\n<h2>6. Preven\u00e7\u00e3o e mitiga\u00e7\u00e3o<\/h2>\n<h3>Estrat\u00e9gias Operacionais<\/h3>\n<h4>Prote\u00e7\u00e3o contra caudal m\u00ednimo<\/h4>\n<ul>\n<li>Instale uma linha de recirculacao automatica de caudal minimo.<\/li>\n<li>Uma v\u00e1lvula abre sempre que o caudal desce abaixo do m\u00ednimo de seguran\u00e7a (normalmente 60\u201370 % do BEP).<\/li>\n<li>Recircula a descarga de volta para a succao ou para um tanque.<\/li>\n<li>Isto mant\u00e9m a bomba fora da zona de recircula\u00e7\u00e3o.<\/li>\n<\/ul>\n<h4>Controlo do ponto de funcionamento<\/h4>\n<ul>\n<li>Evite operar abaixo do caudal m\u00ednimo est\u00e1vel cont\u00ednuo.<\/li>\n<li>Utilize um variador de velocidade para ajustar a bomba \u00e0 procura, tirando partido do <a href=\"https:\/\/vibromera.eu\/pt\/calculators\/affinity-laws-calculator\/\">affinity laws<\/a> para manter o ponto de funcionamento pr\u00f3ximo do BEP ao longo de uma gama variada de regimes.<\/li>\n<li>\u00c9 prefer\u00edvel utilizar v\u00e1rias bombas de menor dimens\u00e3o em vez de uma \u00fanica bomba de grande porte, para obter uma melhor capacidade de regula\u00e7\u00e3o.<\/li>\n<li>Ligue e desligue as bombas em paralelo \u00e0 medida que a procura varia.<\/li>\n<\/ul>\n<h3>Solu\u00e7\u00f5es de conce\u00e7\u00e3o<\/h3>\n<ul>\n<li><strong>Indutor:<\/strong> um est\u00e1gio de entrada axial para estabilizar o fluxo de suc\u00e7\u00e3o.<\/li>\n<li><strong>Impulsores de baixo caudal:<\/strong> modelos especiais concebidos para servi\u00e7os de baixo caudal.<\/li>\n<li><strong>Proper sizing:<\/strong> N\u00e3o escolha uma bomba com capacidade excessiva, pois isso obriga a um funcionamento cr\u00f3nico com baixo caudal.<\/li>\n<li><strong>Gama de funcionamento mais ampla:<\/strong> escolha bombas com curvas planas que suportem varia\u00e7\u00f5es de caudal.<\/li>\n<\/ul>\n<h3>Projeto de Sistema<\/h3>\n<ul>\n<li>Projete o sistema de forma a que a bomba funcione pr\u00f3ximo do ponto de efici\u00eancia m\u00e1xima (BEP).<\/li>\n<li>Assegure uma margem de NPSH adequada para limitar a cavita\u00e7\u00e3o nas zonas de recircula\u00e7\u00e3o.<\/li>\n<li>Posicione as v\u00e1lvulas de controlo de forma a minimizar o estrangulamento na suc\u00e7\u00e3o.<\/li>\n<li>Incluir sistemas de deriva\u00e7\u00e3o ou recircula\u00e7\u00e3o para garantir um caudal m\u00ednimo.<\/li>\n<\/ul>\n<h2>7. Normas e diretrizes do setor<\/h2>\n<h3>Caudal cont\u00ednuo m\u00ednimo<\/h3>\n<ul>\n<li><strong>API 610:<\/strong> Especifica a vaz\u00e3o m\u00ednima cont\u00ednua e est\u00e1vel para bombas centr\u00edfugas.<\/li>\n<li><strong>Valores t\u00edpicos:<\/strong> 60\u201370 % do caudal BEP para bombas radiais, 70\u201380 % para modelos de fluxo misto.<\/li>\n<li><strong>Considera\u00e7\u00f5es t\u00e9rmicas:<\/strong> O caudal m\u00ednimo tamb\u00e9m \u00e9 limitado pelo aumento de temperatura que o fluido consegue suportar em condi\u00e7\u00f5es de baixo caudal.<\/li>\n<\/ul>\n<h3>Teste de desempenho<\/h3>\n<ul>\n<li>Os testes de f\u00e1brica verificam o ponto de in\u00edcio da recircula\u00e7\u00e3o.<\/li>\n<li>Os testes de desempenho no terreno confirmam isso no sistema instalado.<\/li>\n<li>Os crit\u00e9rios de aceita\u00e7\u00e3o especificam a vibra\u00e7\u00e3o admiss\u00edvel no caudal m\u00ednimo, frequentemente referida em rela\u00e7\u00e3o a <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/iso-20816-1\/\">ISO 20816<\/a> zonas de severidade.<\/li>\n<\/ul>\n<p>Uma vez que a recircula\u00e7\u00e3o, o desequil\u00edbrio, os efeitos de passagem pelas p\u00e1s e a cavita\u00e7\u00e3o podem todos aumentar a vibra\u00e7\u00e3o da bomba, o passo pr\u00e1tico de diagn\u00f3stico consiste em medir o espetro a v\u00e1rios caudais e verificar qual dos componentes acompanha a varia\u00e7\u00e3o do caudal. Um analisador port\u00e1til de dois canais, como o <a href=\"https:\/\/vibromera.eu\/pt\/produto\/balanset-1\/\">Balanset-1A<\/a> deteta a pulsa\u00e7\u00e3o subs\u00edncrona e a sua depend\u00eancia do caudal diretamente na bomba, ajudando a confirmar a recircula\u00e7\u00e3o em vez de uma avaria no rotor \u2014 e, nos casos em que a vibra\u00e7\u00e3o elevada se revela ser 1\u00d7 <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/unbalance\/\">desequil\u00edbrio<\/a> no impulsor, permite ao t\u00e9cnico equilibr\u00e1-lo no local sem desmontar a bomba. Para identificar as frequ\u00eancias relevantes antes de come\u00e7ar, um <a href=\"https:\/\/vibromera.eu\/pt\/calculators\/pump-cavitation-frequency\/\">estimador da frequ\u00eancia de cavita\u00e7\u00e3o da bomba<\/a> e um <a href=\"https:\/\/vibromera.eu\/pt\/calculators\/blade-pass-frequency\/\">calculadora da frequ\u00eancia de passagem das p\u00e1s<\/a> marcar os pontos onde deveriam surgir o ru\u00eddo de cavita\u00e7\u00e3o e os picos de passagem pelas aletas, para que a faixa de recircula\u00e7\u00e3o subs\u00edncrona vari\u00e1vel se destaque claramente.<\/p>\n<p>A recircula\u00e7\u00e3o est\u00e1 entre as condi\u00e7\u00f5es de funcionamento mais severas a que uma bomba centr\u00edfuga pode ser submetida. A sua caracter\u00edstica vibra\u00e7\u00e3o subs\u00edncrona, as amplitudes de pulsa\u00e7\u00e3o elevadas e a propens\u00e3o para danos mec\u00e2nicos r\u00e1pidos tornam essencial compreender as condi\u00e7\u00f5es que a desencadeiam, instalar prote\u00e7\u00f5es contra ca\u00eddas de caudal e evitar o funcionamento cr\u00f3nico com caudal reduzido \u2014 fatores fundamentais para a fiabilidade e longevidade da bomba em aplica\u00e7\u00f5es industriais.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/\">\u2190 Voltar ao \u00edndice principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Aprenda sobre recircula\u00e7\u00e3o em bombas, invers\u00e3o de fluxo e instabilidade em baixas vaz\u00f5es, que causam pulsa\u00e7\u00f5es de vibra\u00e7\u00e3o subs\u00edncronas, perda de efici\u00eancia e poss\u00edveis danos.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-207","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/207","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\/207\/revisions"}],"predecessor-version":[{"id":101401,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/207\/revisions\/101401"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/media?parent=207"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/categories?post=207"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/tags?post=207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}