{"id":49306,"date":"2019-11-16T02:01:36","date_gmt":"2019-11-16T01:01:36","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-o-modo-de-falha-grave-de-bombas-centrifugas-definicao\/"},"modified":"2020-02-01T09:19:40","modified_gmt":"2020-02-01T08:19:40","slug":"o-que-e-o-modo-de-falha-grave-de-bombas-centrifugas-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-o-modo-de-falha-grave-de-bombas-centrifugas-definicao\/","title":{"rendered":"O que \u00e9 o modo de falha grave de bombas centr\u00edfugas &#8211; Defini\u00e7\u00e3o"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\">Este artigo analisa os principais modos de falha encontrados nas bombas centr\u00edfugas.\u00a0Falhas na bomba podem resultar em avaria da bomba.\u00a0Problemas de bombas centr\u00edfugas.\u00a0Engenharia T\u00e9rmica<\/div>\n<\/div>\n<div class=\"su-divider su-divider-style-dotted\"><\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<h2>Bombas centr\u00edfugas<\/h2>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-60 lgc-tablet-grid-60 lgc-mobile-grid-100 lgc-equal-heights lgc-first\">\n<div class=\"inside-grid-column\"><a title=\"Bombas centr\u00edfugas\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-bomba-centrifuga-definicao\/\"><strong>As bombas centr\u00edfugas<\/strong><\/a>\u00a0s\u00e3o dispositivos que s\u00e3o usados para fluidos de transporte pela<strong>\u00a0convers\u00e3o da energia cin\u00e9tica de rota\u00e7\u00e3o<\/strong>\u00a0para a<strong>\u00a0energia hidrodinico<\/strong>\u00a0do fluxo de fluido.\u00a0A energia rotacional normalmente vem de um<strong>\u00a0motor el\u00e9trico<\/strong>\u00a0ou<strong>\u00a0turbina a vapor<\/strong>\u00a0(no caso de bombas de \u00e1gua de alimenta\u00e7\u00e3o acionadas por turbina).\u00a0As bombas centr\u00edfugas s\u00e3o usadas em mais aplica\u00e7\u00f5es industriais do que qualquer outro tipo de bomba.\u00a0A bomba centr\u00edfuga mais comum \u00e9 a bomba de voluta.<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-40 lgc-tablet-grid-40 lgc-mobile-grid-100 lgc-equal-heights lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-youtube su-responsive-media-yes\"><iframe class=\"lazy-loaded\" src=\"https:\/\/www.youtube.com\/embed\/BaEHVpKc-1Q?\" width=\"225\" height=\"150\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" data-lazy-type=\"iframe\" data-src=\"https:\/\/www.youtube.com\/embed\/BaEHVpKc-1Q?\" data-mce-fragment=\"1\"><\/iframe><\/div>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<h2>Modos principais de falha de bombas centr\u00edfugas<\/h2>\n<p>Como as\u00a0<strong>bombas centr\u00edfugas<\/strong>\u00a0s\u00e3o um dos tipos de bombas mais amplamente utilizados no mundo, seus par\u00e2metros operacionais e tamb\u00e9m suas vulnerabilidades s\u00e3o bem conhecidos.\u00a0Este artigo analisa os\u00a0<strong>principais modos de falha<\/strong>\u00a0encontrados nas\u00a0<strong>bombas centr\u00edfugas<\/strong>\u00a0.\u00a0Em geral, as falhas da bomba resultam em mudan\u00e7as operacionais que reduzem a efici\u00eancia ou podem resultar em uma avaria da bomba.\u00a0<strong>A confiabilidade<\/strong>\u00a0dos sistemas hidr\u00e1ulicos e tamb\u00e9m das bombas centr\u00edfugas \u00e9 da maior import\u00e2ncia na\u00a0<a title=\"Engenharia nuclear\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/\">engenharia nuclear<\/a>\u00a0.<\/p>\n<p>Os modos de falha das bombas centr\u00edfugas podem ser agrupados em tr\u00eas categorias:<\/p>\n<p><strong>Modos de falha hidr\u00e1ulica<\/strong><\/p>\n<ul>\n<li><strong>Cavita\u00e7\u00e3o.\u00a0<\/strong>A cavita\u00e7\u00e3o \u00e9, em muitos casos, uma ocorr\u00eancia indesej\u00e1vel.\u00a0Nas bombas centr\u00edfugas, a cavita\u00e7\u00e3o causa danos aos componentes (eros\u00e3o do material), vibra\u00e7\u00f5es, ru\u00eddos e perda de efici\u00eancia.<\/li>\n<li><strong>Pulsa\u00e7\u00e3o por press\u00e3o.\u00a0<\/strong>\u00a0Pulsa\u00e7\u00f5es de press\u00e3o s\u00e3o flutua\u00e7\u00f5es na press\u00e3o b\u00e1sica.\u00a0Para bombas de cabe\u00e7ote alto, as pulsa\u00e7\u00f5es de press\u00e3o de suc\u00e7\u00e3o e descarga podem causar instabilidade nos controles da bomba, vibra\u00e7\u00e3o da tubula\u00e7\u00e3o de suc\u00e7\u00e3o e descarga e altos n\u00edveis de ru\u00eddo da bomba.<\/li>\n<li><strong>Recircula\u00e7\u00e3o da bomba.\u00a0<\/strong>Uma bomba que opera com capacidade menor do que os limites projetados pode sofrer recircula\u00e7\u00e3o que ocorre internamente nas bombas.\u00a0A recircula\u00e7\u00e3o da bomba pode causar surtos e cavita\u00e7\u00e3o, mesmo quando o\u00a0<a title=\"Cabe\u00e7a de suc\u00e7\u00e3o positiva l\u00edquida\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/fluid-dynamics\/centrifugal-pumps\/net-positive-suction-head\/\">NPSHa<\/a>\u00a0dispon\u00edvel\u00a0excede o\u00a0<a title=\"Cabe\u00e7a de suc\u00e7\u00e3o positiva l\u00edquida\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/fluid-dynamics\/centrifugal-pumps\/net-positive-suction-head\/\">NPSHr<\/a>\u00a0do fornecedor por uma margem consider\u00e1vel.<\/li>\n<li><strong>Impulso radial e axial.\u00a0<\/strong>Um alto impulso radial que resulta em deflex\u00f5es excessivas do eixo pode levar a problemas persistentes de veda\u00e7\u00e3o ou veda\u00e7\u00e3o mec\u00e2nica e, possivelmente, falha do eixo.\u00a0O impulso axial \u00e9 imposto ao longo do eixo do eixo.\u00a0Um impulso axial alto pode impor uma carga excessiva no rolamento.<\/li>\n<\/ul>\n<p><strong><span>Modos de falha mec\u00e2nica<\/span><\/strong><\/p>\n<ul>\n<li><strong><span>Apreens\u00e3o ou ruptura do eixo<\/span><\/strong><\/li>\n<li><strong><span>Falha no rolamento<\/span><\/strong><\/li>\n<li><strong><span>Falha no selo<\/span><\/strong><\/li>\n<li><strong><span>Vibra\u00e7\u00f5es<\/span><\/strong><\/li>\n<li><strong><span>Fadiga<\/span><\/strong><\/li>\n<\/ul>\n<p><strong><span>Outros modos de falha<\/span><\/strong><\/p>\n<ul>\n<li><strong><span>Eros\u00e3o<\/span><\/strong><\/li>\n<li><strong><span>Corros\u00e3o<\/span><\/strong><\/li>\n<\/ul>\n<\/div>\n<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.<\/p>\n<p>Este artigo \u00e9 baseado na tradu\u00e7\u00e3o autom\u00e1tica do artigo original em ingl\u00eas. Para mais informa\u00e7\u00f5es, consulte o artigo em ingl\u00eas. Voc\u00ea pode nos ajudar. Se voc\u00ea deseja corrigir a tradu\u00e7\u00e3o, envie-a para: translations@nuclear-power.com ou preencha o formul\u00e1rio de tradu\u00e7\u00e3o on-line. Agradecemos sua ajuda, atualizaremos a tradu\u00e7\u00e3o o mais r\u00e1pido poss\u00edvel. Obrigado.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Este artigo analisa os principais modos de falha encontrados nas bombas centr\u00edfugas.\u00a0Falhas na bomba podem resultar em avaria da bomba.\u00a0Problemas de bombas centr\u00edfugas.\u00a0Engenharia T\u00e9rmica Bombas centr\u00edfugas As bombas centr\u00edfugas\u00a0s\u00e3o dispositivos que s\u00e3o usados para fluidos de transporte pela\u00a0convers\u00e3o da energia cin\u00e9tica de rota\u00e7\u00e3o\u00a0para a\u00a0energia hidrodinico\u00a0do fluxo de fluido.\u00a0A energia rotacional normalmente vem de um\u00a0motor el\u00e9trico\u00a0ou\u00a0turbina &#8230; <a title=\"O que \u00e9 o modo de falha grave de bombas centr\u00edfugas &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-o-modo-de-falha-grave-de-bombas-centrifugas-definicao\/\" aria-label=\"More on O que \u00e9 o modo de falha grave de bombas centr\u00edfugas &#8211; Defini\u00e7\u00e3o\">Ler mais<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[14],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>O que \u00e9 o modo de falha grave de bombas centr\u00edfugas - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Este artigo analisa os principais modos de falha encontrados nas bombas centr\u00edfugas. 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