{"id":49005,"date":"2019-11-14T03:09:32","date_gmt":"2019-11-14T02:09:32","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-impulsor-tipos-de-impulsores-definicao\/"},"modified":"2020-02-01T15:58:22","modified_gmt":"2020-02-01T14:58:22","slug":"o-que-e-impulsor-tipos-de-impulsores-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-impulsor-tipos-de-impulsores-definicao\/","title":{"rendered":"O que \u00e9 impulsor &#8211; Tipos de impulsores &#8211; Defini\u00e7\u00e3o"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\">O design do impulsor \u00e9 o fator mais significativo para determinar o desempenho de uma bomba centr\u00edfuga.\u00a0Tr\u00eas tipos b\u00e1sicos de impulsores: aberto, semi-aberto, fechado<\/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>Tipos de impulsores em bombas centr\u00edfugas<\/h2>\n<p><strong><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/open-semi-open-closed-impeller-min.png\"><img loading=\"lazy\" class=\"alignright wp-image-14955 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/open-semi-open-closed-impeller-min.png\" alt=\"impulsor aberto, semiaberto, fechado\" width=\"185\" height=\"642\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/open-semi-open-closed-impeller-min.png\" \/><\/a>O design do impulsor<\/strong>\u00a0\u00e9 o\u00a0<strong>fator mais significativo<\/strong>\u00a0para determinar o desempenho de uma bomba centr\u00edfuga.\u00a0Um impulsor adequadamente projetado\u00a0<strong>otimiza o fluxo<\/strong>\u00a0,\u00a0<strong>minimizando a turbul\u00eancia<\/strong>\u00a0e\u00a0<strong>maximizando a efici\u00eancia<\/strong>\u00a0.<\/p>\n<p>O impulsor de uma bomba centr\u00edfuga pode ser\u00a0<strong>de\u00a0<\/strong><strong>tr\u00eas tipos b\u00e1sicos<\/strong>\u00a0:<\/p>\n<ul>\n<li><strong>Impulsor aberto.\u00a0<\/strong>\u00a0Os impulsores abertos t\u00eam as p\u00e1s livres nos dois lados.\u00a0Os impulsores abertos s\u00e3o estruturalmente fracos.\u00a0Eles s\u00e3o normalmente usados \u200b\u200bem bombas de baixo di\u00e2metro e de baixo custo e bombas que manuseiam s\u00f3lidos em suspens\u00e3o.<\/li>\n<li><strong>Impulsor semiaberto<\/strong>\u00a0.\u00a0As palhetas s\u00e3o livres de um lado e fechadas do outro.\u00a0A cobertura acrescenta for\u00e7a mec\u00e2nica.\u00a0Eles tamb\u00e9m oferecem maior efici\u00eancia do que impulsores abertos.\u00a0Eles podem ser usados \u200b\u200bem bombas de di\u00e2metro m\u00e9dio e com l\u00edquidos contendo pequenas quantidades de s\u00f3lidos em suspens\u00e3o.\u00a0Devido \u00e0 minimiza\u00e7\u00e3o da recircula\u00e7\u00e3o e outras perdas, \u00e9 muito importante que exista uma pequena folga entre as palhetas do impulsor e a carca\u00e7a.<\/li>\n<li><strong>Impulsor fechado<\/strong>\u00a0.\u00a0As palhetas est\u00e3o localizadas entre os dois discos, todos em uma \u00fanica pe\u00e7a fundida.\u00a0Eles s\u00e3o usados \u200b\u200bem bombas grandes com alta efici\u00eancia e baixa\u00a0<strong>cabe\u00e7a de suc\u00e7\u00e3o positiva l\u00edquida<\/strong>\u00a0necess\u00e1ria\u00a0.\u00a0As bombas centr\u00edfugas com impulsor fechado s\u00e3o as bombas mais usadas no manuseio de l\u00edquidos transparentes.\u00a0Eles contam com an\u00e9is de desgaste de folga estreita no impulsor e na carca\u00e7a da bomba.\u00a0O impulsor fechado \u00e9 um projeto mais complicado e caro, n\u00e3o apenas por causa do impulsor, mas tamb\u00e9m s\u00e3o necess\u00e1rios an\u00e9is de desgaste adicionais.<\/li>\n<\/ul>\n<p>As p\u00e1s do impulsor podem ser:<\/p>\n<ul>\n<li>Design da l\u00e2mina com\u00a0<strong>curvatura para tr\u00e1s<\/strong>\u00a0(design preferido devido \u00e0 inclina\u00e7\u00e3o negativa da curva de desempenho)<\/li>\n<li>Design\u00a0<strong>radial da<\/strong>\u00a0l\u00e2mina<\/li>\n<li>Projeto de l\u00e2mina com\u00a0<strong>curvatura para<\/strong>\u00a0a frente (devido \u00e0s condi\u00e7\u00f5es de inclina\u00e7\u00e3o positiva, esse projeto pode causar oscila\u00e7\u00e3o da bomba)<\/li>\n<\/ul>\n<p><span>Os impulsores podem ser:<\/span><\/p>\n<ul>\n<li><strong><span>Suc\u00e7\u00e3o \u00fanica<\/span><\/strong><span>\u00a0.\u00a0Um impulsor de suc\u00e7\u00e3o \u00fanica permite que o l\u00edquido entre no centro das p\u00e1s apenas de uma dire\u00e7\u00e3o.<\/span><\/li>\n<li><strong><span>Suc\u00e7\u00e3o dupla<\/span><\/strong><span>\u00a0.\u00a0Um impulsor de suc\u00e7\u00e3o dupla permite que o l\u00edquido entre no centro das p\u00e1s do impulsor de ambos os lados simultaneamente.\u00a0Isso reduz as for\u00e7as exercidas no eixo.<\/span><\/li>\n<\/ul>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Single-vs.-Double-suction-impeller-min.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-14954 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Single-vs.-Double-suction-impeller-min.png\" alt=\"Impulsor de suc\u00e7\u00e3o simples vs. dupla-min\" width=\"329\" height=\"181\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Single-vs.-Double-suction-impeller-min.png\" \/><\/a><\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Impeller-and-diffuser-min.png\"><img loading=\"lazy\" class=\"alignright size-medium wp-image-14953 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Impeller-and-diffuser-min-300x219.png\" alt=\"impulsor e difusor\" width=\"300\" height=\"219\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Impeller-and-diffuser-min-300x219.png\" \/><\/a><span>A press\u00e3o de sa\u00edda muda levemente de acordo com o design usado.\u00a0As l\u00e2minas podem estar abertas ou fechadas.\u00a0Al\u00e9m disso, o\u00a0<\/span><strong><span>difusor<\/span><\/strong><span>\u00a0pode ser equipado com palhetas fixas para ajudar a guiar o fluxo em dire\u00e7\u00e3o \u00e0 sa\u00edda.\u00a0A energia transferida para o l\u00edquido corresponde \u00e0 velocidade na borda do impulsor.\u00a0Quanto mais r\u00e1pido o impulsor gira ou quanto maior o impulsor, maior ser\u00e1 a velocidade.<\/span><\/p>\n<p><span>Em geral, as\u00a0<\/span><strong><span>bombas centr\u00edfugas<\/span><\/strong><span>\u00a0podem ser classificadas com base na maneira pela qual o fluido flui atrav\u00e9s da bomba.\u00a0N\u00e3o \u00e9 uma classifica\u00e7\u00e3o baseada apenas no impulsor, mas sim no projeto da\u00a0<\/span><strong><span>carca\u00e7a<\/span><\/strong><span>\u00a0da\u00a0<strong>bomba<\/strong>\u00a0e do\u00a0<\/span><strong><span>impulsor<\/span><\/strong><span>\u00a0.\u00a0Os tr\u00eas tipos de fluxo atrav\u00e9s de uma bomba centr\u00edfuga s\u00e3o:<\/span><\/p>\n<ul>\n<li><strong><span>fluxo radial<\/span><\/strong><\/li>\n<li><strong><span>fluxo misto<\/span><\/strong><span>\u00a0(parte radial, parte axial)<\/span><\/li>\n<li><strong><span>fluxo axial<\/span><\/strong><span>\u00a0(tipo h\u00e9lice)<\/span><\/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>O design do impulsor \u00e9 o fator mais significativo para determinar o desempenho de uma bomba centr\u00edfuga.\u00a0Tr\u00eas tipos b\u00e1sicos de impulsores: aberto, semi-aberto, fechado Tipos de impulsores em bombas centr\u00edfugas O design do impulsor\u00a0\u00e9 o\u00a0fator mais significativo\u00a0para determinar o desempenho de uma bomba centr\u00edfuga.\u00a0Um impulsor adequadamente projetado\u00a0otimiza o fluxo\u00a0,\u00a0minimizando a turbul\u00eancia\u00a0e\u00a0maximizando a efici\u00eancia\u00a0. O impulsor &#8230; <a title=\"O que \u00e9 impulsor &#8211; Tipos de impulsores &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-impulsor-tipos-de-impulsores-definicao\/\" aria-label=\"More on O que \u00e9 impulsor &#8211; Tipos de impulsores &#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 impulsor - Tipos de impulsores - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"O design do impulsor \u00e9 o fator mais significativo para determinar o desempenho de uma bomba centr\u00edfuga. 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