{"id":22820,"date":"2025-06-30T16:33:00","date_gmt":"2025-06-30T08:33:00","guid":{"rendered":"https:\/\/kingdapump.com\/?p=22820"},"modified":"2025-07-16T15:32:28","modified_gmt":"2025-07-16T07:32:28","slug":"o-que-e-cavitacao-de-bomba","status":"publish","type":"post","link":"https:\/\/kingdapump.com\/pt\/what-is-pump-cavitation\/","title":{"rendered":"O que \u00e9 cavita\u00e7\u00e3o da bomba? Dicas para detect\u00e1-la e preveni-la"},"content":{"rendered":"<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Pump-Cavitation-Banner.jpg\" alt=\"Bomba-Cavita\u00e7\u00e3o-Banner\" class=\"wp-image-22892\" srcset=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Pump-Cavitation-Banner.jpg 1920w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Pump-Cavitation-Banner-300x169.jpg 300w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Pump-Cavitation-Banner-1024x576.jpg 1024w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Pump-Cavitation-Banner-768x432.jpg 768w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Pump-Cavitation-Banner-1536x864.jpg 1536w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><\/figure>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-text-color has-link-color wp-elements-6ca914c9ca92a0b24c151ef8074a3cc6\" id=\"h-what-is-cavitation-in-pump\" style=\"color:#1f365c;font-size:25px\">O que \u00e9 cavita\u00e7\u00e3o em bomba?<\/h2>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:18px\">A cavita\u00e7\u00e3o da bomba refere-se \u00e0 situa\u00e7\u00e3o em que, quando a press\u00e3o sobre o l\u00edquido na bomba diminui, o l\u00edquido vaporiza, gerando muitas bolhas. As bolhas aumentam gradualmente.<\/p>\n\n\n\n<p style=\"font-size:18px\">No momento em que a bolha colapsa, o fluido em alta velocidade na bomba impacta dentro da bolha. Essa for\u00e7a de impacto danificar\u00e1 a bomba, erodir\u00e1 seu corpo, formar\u00e1 cavita\u00e7\u00e3o e reduzir\u00e1 sua vida \u00fatil.<\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile\"><div class=\"wp-block-media-text__content\">\n<h3 class=\"wp-block-heading\" id=\"h-why-pump-cavitation-occurs\" style=\"font-size:20px\">Por que ocorre a cavita\u00e7\u00e3o da bomba?<\/h3>\n\n\n\n<p style=\"font-size:18px\">Para entender por que a bomba <a href=\"https:\/\/en.wikipedia.org\/wiki\/Cavitation\">cavita\u00e7\u00e3o<\/a> Para que isso ocorra, precisamos primeiro entender as propriedades f\u00edsicas da \u00e1gua. Como todos sabemos, \u00e1gua e vapor podem ser convertidos um no outro. Quando a temperatura da \u00e1gua permanece inalterada e a press\u00e3o cai a um valor cr\u00edtico, a \u00e1gua vaporiza. Essa press\u00e3o \u00e9 chamada de press\u00e3o de vapor.<\/p>\n\n\n\n<p style=\"font-size:18px\">Quando ocorre a vaporiza\u00e7\u00e3o, a \u00e1gua emite vapor e bolhas. Esse processo \u00e9 chamado de vaporiza\u00e7\u00e3o da \u00e1gua, e o processo de vaporiza\u00e7\u00e3o \u00e9 a causa da cavita\u00e7\u00e3o.<\/p>\n<\/div><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Cavitation-Occurs-inside-Pump.jpg\" alt=\"Cavita\u00e7\u00e3o ocorre dentro da bomba\" class=\"wp-image-22829 size-full\" srcset=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Cavitation-Occurs-inside-Pump.jpg 1000w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Cavitation-Occurs-inside-Pump-300x300.jpg 300w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Cavitation-Occurs-inside-Pump-150x150.jpg 150w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Cavitation-Occurs-inside-Pump-768x768.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure><\/div>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-process-of-pump-cavitation\" style=\"font-size:20px\">Processo de Cavita\u00e7\u00e3o da Bomba<\/h3>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:18px\">Primeiro, a press\u00e3o sobre a \u00e1gua na bomba diminui e a \u00e1gua se vaporiza. Durante esse processo, uma grande quantidade de vapor \u00e9 produzida e o g\u00e1s dissolvido na \u00e1gua forma bolhas.<\/p>\n\n\n\n<p style=\"font-size:18px\">\u00c0 medida que as bolhas fluem da \u00e1rea de baixa press\u00e3o para a \u00e1rea de alta press\u00e3o na bomba com a \u00e1gua, elas se condensam rapidamente e colapsam sob a a\u00e7\u00e3o da alta press\u00e3o. Nesse momento, a \u00e1gua de alta press\u00e3o flui rapidamente para o espa\u00e7o anteriormente ocupado pelas bolhas.<\/p>\n\n\n\n<p style=\"font-size:18px\">Ent\u00e3o, como o g\u00e1s na bolha ainda n\u00e3o condensou, a \u00e1gua em alta velocidade avan\u00e7a em dire\u00e7\u00e3o \u00e0 bolha, impactando-a e formando mais bolhas menores. As bolhas menores continuar\u00e3o a condensar e colapsar sob alta press\u00e3o.<\/p>\n\n\n\n<p style=\"font-size:18px\">Finalmente, quando a rea\u00e7\u00e3o de vaporiza\u00e7\u00e3o se repete, as bolhas na superf\u00edcie do canal de fluxo e pr\u00f3ximas ao impulsor exercem forte impacto sobre o material e, em casos graves, podem ocorrer cavita\u00e7\u00e3o em favo de mel ou at\u00e9 mesmo fratura das pe\u00e7as de desgaste. O g\u00e1s ativo nas bolhas permanece em contato com o metal por um longo per\u00edodo, o que o corroe.<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1000\" height=\"341\" src=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/process-of-cavitation.jpg\" alt=\"processo de cavita\u00e7\u00e3o\" class=\"wp-image-22830\" srcset=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/process-of-cavitation.jpg 1000w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/process-of-cavitation-300x102.jpg 300w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/process-of-cavitation-768x262.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<div style=\"height:150px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-causes-pump-cavitation\" style=\"font-size:25px\">O que causa a cavita\u00e7\u00e3o da bomba?<\/h2>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"876\" height=\"640\" src=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Pump-Cavitation-Animation.gif\" alt=\"Anima\u00e7\u00e3o de Cavita\u00e7\u00e3o de Bomba\" class=\"wp-image-22846 size-full\"\/><\/figure><div class=\"wp-block-media-text__content\">\n<h3 class=\"wp-block-heading\" id=\"h-pump-cavitation-animation\" style=\"font-size:20px\">Anima\u00e7\u00e3o de Cavita\u00e7\u00e3o de Bomba<\/h3>\n\n\n\n<p style=\"font-size:18px\">A cavita\u00e7\u00e3o \u00e9 um problema comum em bombas. Muitas opera\u00e7\u00f5es inadequadas podem levar \u00e0 cavita\u00e7\u00e3o. <\/p>\n\n\n\n<p style=\"font-size:18px\">A cavita\u00e7\u00e3o \u00e9 determinada pela capacidade anticavita\u00e7\u00e3o da bomba e pelo dispositivo de suc\u00e7\u00e3o. <\/p>\n\n\n\n<p style=\"font-size:18px\">A seguir est\u00e3o algumas raz\u00f5es importantes para a cavita\u00e7\u00e3o da bomba.<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:20px\"><strong>1. A velocidade do motor est\u00e1 muito alta<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Quando a velocidade do motor da bomba \u00e9 muito alta, a vaz\u00e3o na porta de suc\u00e7\u00e3o do impulsor aumenta. De acordo com o princ\u00edpio de Bernoulli, quando a velocidade aumenta, a press\u00e3o diminui. Quando a press\u00e3o \u00e9 inferior ao valor cr\u00edtico da press\u00e3o de vapor, o l\u00edquido vaporiza, levando \u00e0 cavita\u00e7\u00e3o da bomba.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:20px\"><strong>2. A resist\u00eancia do tubo de suc\u00e7\u00e3o \u00e9 muito grande<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Quando o tubo de suc\u00e7\u00e3o da bomba \u00e9 muito longo, tem muitos cotovelos ou bloqueios no tubo, a press\u00e3o do l\u00edquido diminui ao fluir pelo tubo, o que pode causar cavita\u00e7\u00e3o na bomba.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:20px\"><strong>3. A altura de instala\u00e7\u00e3o da bomba \u00e9 muito alta<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Toda bomba possui um par\u00e2metro importante, o NPSH. Quando a bomba \u00e9 instalada muito alta em rela\u00e7\u00e3o ao n\u00edvel do l\u00edquido, sua NPSHa (altura de suc\u00e7\u00e3o l\u00edquida positiva dispon\u00edvel) ser\u00e1 menor que NPSHr (altura de suc\u00e7\u00e3o l\u00edquida positiva necess\u00e1ria), o que causar\u00e1 a diminui\u00e7\u00e3o da press\u00e3o de suc\u00e7\u00e3o e a cavita\u00e7\u00e3o da bomba.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:20px\"><strong>4. A temperatura do l\u00edquido est\u00e1 muito alta<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Quando a temperatura do l\u00edquido que transportamos \u00e9 muito alta, uma pequena quantidade de l\u00edquido pode vaporizar antes de atingir a extremidade de suc\u00e7\u00e3o, o que torna mais prov\u00e1vel a ocorr\u00eancia de cavita\u00e7\u00e3o na bomba.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:20px\"><strong>5. Bombas m\u00faltiplas em paralelo<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Quando nossas condi\u00e7\u00f5es de trabalho s\u00e3o mais complicadas e usamos v\u00e1rias bombas em paralelo para transportar l\u00edquidos, se as bombas paralelas estiverem configuradas de forma desigual, a vaz\u00e3o de uma bomba ser\u00e1 muito pequena, a press\u00e3o na extremidade de suc\u00e7\u00e3o diminuir\u00e1 e ocorrer\u00e1 cavita\u00e7\u00e3o na bomba.<\/p>\n\n\n\n<div style=\"height:150px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-to-identify-cavitation-pump-cavitation-damage\" style=\"font-size:25px\">Como identificar a cavita\u00e7\u00e3o? Danos causados pela cavita\u00e7\u00e3o da bomba<\/h2>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile\"><div class=\"wp-block-media-text__content\">\n<p style=\"font-size:20px\"><strong>Danos \u00e0s pe\u00e7as de desgaste<\/strong><\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:18px\">A cavita\u00e7\u00e3o da bomba impactar\u00e1 o <a href=\"https:\/\/kingdapump.com\/pt\/pecas-da-bomba\/pecas-de-desgaste-da-extremidade-umida-para-bomba-de-polpa\/\">pe\u00e7as de desgaste<\/a>, causando cavita\u00e7\u00e3o em forma de favo de mel nas pe\u00e7as de desgaste e at\u00e9 mesmo quebrando ou corroendo as pe\u00e7as de desgaste.<\/p>\n<\/div><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Cavitation-damage.jpg\" alt=\"Danos por cavita\u00e7\u00e3o\" class=\"wp-image-22866 size-full\" srcset=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Cavitation-damage.jpg 1000w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Cavitation-damage-300x225.jpg 300w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Cavitation-damage-768x576.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/02\/pump-maintenance-2.jpg\" alt=\"manuten\u00e7\u00e3o-da-bomba-2\" class=\"wp-image-22467 size-full\" srcset=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/02\/pump-maintenance-2.jpg 1000w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/02\/pump-maintenance-2-300x225.jpg 300w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/02\/pump-maintenance-2-768x576.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p style=\"font-size:20px\"><strong>Vibra\u00e7\u00e3o<\/strong><\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:18px\">Quando a frequ\u00eancia de pulsa\u00e7\u00e3o da cavita\u00e7\u00e3o da bomba estiver pr\u00f3xima da frequ\u00eancia natural da bomba durante a opera\u00e7\u00e3o, isso tamb\u00e9m far\u00e1 com que a bomba vibre violentamente.<\/p>\n\n\n\n<p style=\"font-size:18px\">Quando ocorre vibra\u00e7\u00e3o, o man\u00f4metro flutua.<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile\"><div class=\"wp-block-media-text__content\">\n<p style=\"font-size:20px\"><strong>Aumento da temperatura do rolamento<\/strong><\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:18px\">A cavita\u00e7\u00e3o da bomba faz com que ela vibre violentamente, aumentando o atrito e a temperatura do rolamento. Use um term\u00f4metro para medir a temperatura do rolamento.<\/p>\n\n\n\n<p style=\"font-size:18px\">Se a temperatura do mancal estiver mais alta que o normal, pode ter ocorrido cavita\u00e7\u00e3o.<\/p>\n<\/div><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/02\/pump-maintenance-6.jpg\" alt=\"manuten\u00e7\u00e3o-da-bomba-6\" class=\"wp-image-22482 size-full\" srcset=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/02\/pump-maintenance-6.jpg 1000w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/02\/pump-maintenance-6-300x225.jpg 300w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/02\/pump-maintenance-6-768x576.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Noise-1024x768.jpg\" alt=\"Barulho\" class=\"wp-image-22886 size-full\" srcset=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Noise-1024x768.jpg 1024w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Noise-300x225.jpg 300w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Noise-768x576.jpg 768w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Noise-1536x1152.jpg 1536w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Noise.jpg 1706w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p style=\"font-size:20px\"><strong>Barulho<\/strong><\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:18px\">Quando ocorre a cavita\u00e7\u00e3o da bomba, um grande n\u00famero de bolhas colapsa e o fluxo de \u00e1gua em alta velocidade impacta, causando ru\u00eddo intenso.<\/p>\n\n\n\n<p style=\"font-size:18px\">O som da cavita\u00e7\u00e3o \u00e9 semelhante ao som de estalo de uma pedra batendo em metal, e o som aumenta ou diminui conforme a vaz\u00e3o.<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile\"><div class=\"wp-block-media-text__content\">\n<p style=\"font-size:20px\"><strong>Diminui\u00e7\u00e3o da efici\u00eancia<\/strong><\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:18px\">O grande n\u00famero de bolhas produzidas pela cavita\u00e7\u00e3o da bomba dificultar\u00e1 o fluxo de \u00e1gua, resultando em diminui\u00e7\u00e3o da vaz\u00e3o, instabilidade da altura manom\u00e9trica da bomba e redu\u00e7\u00e3o da efici\u00eancia da bomba.<\/p>\n\n\n\n<p style=\"font-size:18px\">Quando o valor do medidor de vaz\u00e3o \u00e9 10% menor que o valor esperado, pode-se inferir que ocorreu cavita\u00e7\u00e3o.<\/p>\n<\/div><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"842\" src=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Efficiency-Decrease-scaled-e1743389463579-1024x842.jpeg\" alt=\"Diminui\u00e7\u00e3o da efici\u00eancia\" class=\"wp-image-22888 size-full\" srcset=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Efficiency-Decrease-scaled-e1743389463579-1024x842.jpeg 1024w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Efficiency-Decrease-scaled-e1743389463579-300x247.jpeg 300w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Efficiency-Decrease-scaled-e1743389463579-768x632.jpeg 768w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Efficiency-Decrease-scaled-e1743389463579-1536x1264.jpeg 1536w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Efficiency-Decrease-scaled-e1743389463579-2048x1685.jpeg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<div style=\"height:80px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:70% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"259\" src=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Pump-head-contact-1.jpg\" alt=\"O que \u00e9 cabe\u00e7a de bomba\" class=\"wp-image-22813 size-full\" srcset=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Pump-head-contact-1.jpg 1000w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Pump-head-contact-1-300x78.jpg 300w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Pump-head-contact-1-768x199.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/kingdapump.com\/pt\/cabeca-da-bomba\/\" style=\"border-radius:15px;background-color:#1f365c\">Ver mais &gt;&gt;&gt;<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:70% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"265\" src=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/06\/Pump-failure-contact-1024x265.jpg\" alt=\"Contato de falha da bomba\" class=\"wp-image-24998 size-full\" srcset=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/06\/Pump-failure-contact-1024x265.jpg 1024w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/06\/Pump-failure-contact-300x78.jpg 300w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/06\/Pump-failure-contact-768x199.jpg 768w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/06\/Pump-failure-contact-1536x398.jpg 1536w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/06\/Pump-failure-contact-18x5.jpg 18w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/06\/Pump-failure-contact.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/kingdapump.com\/pt\/falha-da-bomba\/\" style=\"border-radius:15px;background-color:#1f365c\">Ver mais &gt;&gt;&gt;<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:150px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-to-avoid-pump-cavitation\" style=\"font-size:25px\">Como evitar a cavita\u00e7\u00e3o da bomba?<\/h2>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:20px\"><strong>1. Reduza a velocidade do motor da bomba<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Ajustar a velocidade do motor para a velocidade adequada de acordo com a tabela de par\u00e2metros da bomba ou <a href=\"https:\/\/kingdapump.com\/pt\/curva-da-bomba\/\">curva de desempenho da bomba<\/a> evitar\u00e1 efetivamente a cavita\u00e7\u00e3o.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:20px\"><strong>2. Projeto de Pipeline<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Melhore o projeto do tubo de suc\u00e7\u00e3o, reduza o n\u00famero de cotovelos, permita que a \u00e1gua flua sempre com maior efici\u00eancia e reduza a perda de atrito da \u00e1gua no tubo.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:20px\"><strong>3. Instale a bomba corretamente<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Cada bomba possui uma determinada margem de cavita\u00e7\u00e3o NPSH. Antes de instalar a bomba, ela deve ser instalada de acordo com os par\u00e2metros pr\u00e9-determinados para garantir que NPSHr seja maior que NPSHa.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:20px\"><strong>4. Manuten\u00e7\u00e3o regular<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Ap\u00f3s a instala\u00e7\u00e3o da bomba, a manuten\u00e7\u00e3o regular deve ser realizada de acordo com o manual de opera\u00e7\u00e3o fornecido pelo fabricante da bomba, como verifica\u00e7\u00e3o da temperatura dos mancais, inspe\u00e7\u00e3o regular do desgaste do impulsor, vibra\u00e7\u00e3o da bomba, etc.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:20px\"><strong>5. Escolhendo a bomba certa<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Antes de iniciar seu projeto, voc\u00ea deve perguntar ao <a href=\"http:\/\/kingdapump.com\/pt\/\">fabricante de bombas<\/a> Projete seu projeto para garantir que a bomba escolhida atenda \u00e0s expectativas do projeto. Esta \u00e9 a melhor maneira de prevenir e minimizar a probabilidade de cavita\u00e7\u00e3o.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:70% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"207\" src=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Pump-head-contact.jpg\" alt=\"contato\" class=\"wp-image-22807 size-full\" srcset=\"https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Pump-head-contact.jpg 800w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Pump-head-contact-300x78.jpg 300w, https:\/\/kingdapump.com\/wp-content\/uploads\/2025\/03\/Pump-head-contact-768x199.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-100\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-link-color has-medium-font-size has-custom-font-size wp-element-button\" style=\"border-radius:15px;background-color:#1f365c\">Entre em contato com um especialista hoje mesmo!<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:150px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-types-of-cavitation\" style=\"font-size:25px\">Tipos de Cavita\u00e7\u00e3o<\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\" style=\"font-size:18px\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Tipos de cavita\u00e7\u00e3o<\/strong><\/td><td><strong>Causa<\/strong><\/td><td><strong>Locais comuns de cavita\u00e7\u00e3o<\/strong><\/td><\/tr><tr><td>Cavita\u00e7\u00e3o Vaporosa<\/td><td>A press\u00e3o do l\u00edquido diminui, vaporizando-se para formar bolhas<\/td><td><a href=\"https:\/\/kingdapump.com\/pt\/pecas-da-bomba\/pecas-de-desgaste-da-extremidade-umida-para-bomba-de-polpa\/impulsor-de-bomba-de-polpa\/\">Impulsor<\/a> entrada<\/td><\/tr><tr><td>Turbul\u00eancia Cavita\u00e7\u00e3o<\/td><td>A vaz\u00e3o na voluta ou bomba est\u00e1 muito alta, resultando em diminui\u00e7\u00e3o de press\u00e3o e forma\u00e7\u00e3o de bolhas.<\/td><td>Superf\u00edcie de <a href=\"https:\/\/kingdapump.com\/pt\/pecas-da-bomba\/pecas-de-desgaste-da-extremidade-umida-para-bomba-de-polpa\/revestimento-de-voluta-de-bomba-de-polpa\/\">voluta<\/a><\/td><\/tr><tr><td>Cavita\u00e7\u00e3o Inercial<\/td><td>A vaz\u00e3o est\u00e1 muito alta, causando impacto na bomba e formando bolhas.<\/td><td>Impulsor<\/td><\/tr><tr><td>Cavita\u00e7\u00e3o de V\u00f3rtice<\/td><td>O fluxo de \u00e1gua \u00e9 em forma de v\u00f3rtice e o g\u00e1s \u00e9 puxado para dentro da bomba<\/td><td>Entrada da bomba<\/td><\/tr><tr><td>Cavita\u00e7\u00e3o Gasosa<\/td><td>A press\u00e3o do l\u00edquido diminui e o g\u00e1s dissolvido no l\u00edquido forma bolhas<\/td><td><a href=\"https:\/\/kingdapump.com\/pt\/bomba-de-polpa\/bomba-de-polpa-horizontal\/bomba-quimica-de-petroleo-lc\/\">Bombas qu\u00edmicas<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div style=\"height:150px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faq-about-pump-cavitation\" style=\"font-size:25px\">Perguntas frequentes sobre cavita\u00e7\u00e3o de bombas<\/h2>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-alpha-channel-opacity has-background is-style-wide\" style=\"background-color:#1f365c;color:#1f365c\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-medium-font-size wp-elements-d569ca7dd70a1ccc93dc1c0e9d337e7d\" id=\"h-what-is-cavitation-in-centrifugal-pump\" style=\"color:#1f365c\">O que \u00e9 cavita\u00e7\u00e3o em bomba centr\u00edfuga?<\/h3>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading has-text-color has-link-color wp-elements-ef43ff7a7a74f2ad5e9c72dc57c2cdcd\" id=\"h-1-causes-of-cavitation-in-centrifugal-pump\" style=\"color:#1f365c;font-size:18px\">1. Causas de cavita\u00e7\u00e3o em bomba centr\u00edfuga<\/h4>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:18px\">As bombas centr\u00edfugas s\u00e3o mais propensas \u00e0 cavita\u00e7\u00e3o do que outras bombas (bombas de deslocamento positivo), o que \u00e9 determinado pelo princ\u00edpio de funcionamento das bombas centr\u00edfugas.<\/p>\n\n\n\n<p style=\"font-size:18px\">O princ\u00edpio de funcionamento de uma bomba centr\u00edfuga \u00e9 que a rota\u00e7\u00e3o de alta velocidade do impulsor gera for\u00e7a centr\u00edfuga para sugar o fluido. Devido \u00e0 rota\u00e7\u00e3o de alta velocidade do impulsor, uma press\u00e3o negativa ser\u00e1 gerada ao redor do impulsor. Quando a press\u00e3o do fluido na entrada da bomba \u00e9 insuficiente, parte do l\u00edquido vaporiza, fazendo com que o vapor de \u00e1gua entre na bomba.<\/p>\n\n\n\n<p style=\"font-size:18px\">Quando o vapor de \u00e1gua se move da entrada para o impulsor, ou seja, de um estado de press\u00e3o negativa para um estado de alta press\u00e3o, as bolhas estouram, fazendo com que a bomba centr\u00edfuga vibre e ocorra cavita\u00e7\u00e3o da bomba.<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading has-text-color has-link-color wp-elements-7e7af6b0731d7d0e56d40dd2ceb98cd7\" id=\"h-2-how-to-prevent-cavitation-in-centrifugal-pump\" style=\"color:#1f365c;font-size:18px\">2. Como evitar cavita\u00e7\u00e3o em bomba centr\u00edfuga?<\/h4>\n\n\n\n<p style=\"font-size:18px\">\u2160. Certifique-se de que a bomba centr\u00edfuga tenha NPSH suficiente para evitar press\u00e3o de entrada muito baixa.<\/p>\n\n\n\n<p style=\"font-size:18px\">\u2161. Normalmente, quando a vaz\u00e3o da bomba centr\u00edfuga \u00e9 inst\u00e1vel, a cavita\u00e7\u00e3o \u00e9 propensa a ocorrer, portanto, a vaz\u00e3o est\u00e1vel da bomba centr\u00edfuga deve ser controlada.<\/p>\n\n\n\n<p style=\"font-size:18px\">\u2162 Antes de instalar a bomba centr\u00edfuga, \u00e9 necess\u00e1rio realizar um projeto completo da tubula\u00e7\u00e3o para evitar muitos cotovelos ou tubos muito estreitos.<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-alpha-channel-opacity has-background is-style-wide\" style=\"background-color:#1f365c;color:#1f365c\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-medium-font-size wp-elements-02e2bca5923d0c11f335e80e38b2eece\" id=\"h-when-we-change-the-pump-the-cavitation\" style=\"color:#1f365c\">Quando trocamos a bomba ocorre a cavita\u00e7\u00e3o\u200b?<\/h3>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:18px\">Quando ocorre cavita\u00e7\u00e3o, n\u00e3o h\u00e1 necessidade de substituir a bomba imediatamente. Precisamos primeiro entender a causa real da cavita\u00e7\u00e3o e tentar resolver a causa espec\u00edfica da cavita\u00e7\u00e3o da bomba.<\/p>\n\n\n\n<p style=\"font-size:18px\">Por exemplo, podemos controlar a velocidade da bomba de acordo com o manual de opera\u00e7\u00e3o ou a curva de desempenho da bomba para alterar o fluxo ou a altura manom\u00e9trica da bomba e garantir que ela mantenha o desempenho ideal.<\/p>\n\n\n\n<p style=\"font-size:18px\">Somente quando a cavita\u00e7\u00e3o corr\u00f3i os componentes principais da bomba, como o impulsor e a veda\u00e7\u00e3o, fazendo com que a bomba reduza a efici\u00eancia ou n\u00e3o funcione corretamente, \u00e9 que precisamos considerar a substitui\u00e7\u00e3o da bomba ou entrar em contato com o engenheiro de p\u00f3s-venda do fabricante da bomba para manuten\u00e7\u00e3o e reparo profissional.<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-alpha-channel-opacity has-background is-style-wide\" style=\"background-color:#1f365c;color:#1f365c\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-medium-font-size wp-elements-62f774c52b2b65a1122044a75806b864\" id=\"h-what-is-positive-displacement-pump-cavitation\" style=\"color:#1f365c\">O que \u00e9 cavita\u00e7\u00e3o em bomba de deslocamento positivo?<\/h3>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:18px\">Em compara\u00e7\u00e3o com as bombas centr\u00edfugas, as bombas de deslocamento positivo s\u00e3o menos propensas \u00e0 cavita\u00e7\u00e3o porque o princ\u00edpio de funcionamento das bombas de deslocamento positivo \u00e9 diferente daquele das bombas centr\u00edfugas.<\/p>\n\n\n\n<p style=\"font-size:18px\">O princ\u00edpio de funcionamento de uma bomba de deslocamento positivo \u00e9 espremer o fluido atrav\u00e9s do volume na bomba, ou seja, atrav\u00e9s do movimento alternativo do \u00eambolo ou pist\u00e3o, e alterar periodicamente o volume na bomba para atingir a fun\u00e7\u00e3o de transportar o fluido.<\/p>\n\n\n\n<p style=\"font-size:18px\">Como sua vaz\u00e3o e press\u00e3o s\u00e3o mais est\u00e1veis e n\u00e3o causam grandes mudan\u00e7as de press\u00e3o na entrada da bomba, as bombas de deslocamento positivo basicamente n\u00e3o cavitam.<\/p>\n\n\n\n<p style=\"font-size:18px\">No entanto, isso n\u00e3o significa que as bombas de deslocamento positivo n\u00e3o cavitar\u00e3o. Quando uma bomba de deslocamento positivo transporta pasta de espuma, se n\u00e3o conseguir dissipar a espuma com efici\u00eancia, ela poder\u00e1 cavitar.<\/p>\n\n\n\n<div style=\"height:150px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>","protected":false},"excerpt":{"rendered":"<p>What is Cavitation in Pump? Pump cavitation refers to the situation where when the pressure on the liquid in the pump decreases, the liquid will vaporize, thereby generating many bubbles. The bubbles will gradually grow larger. The moment the bubble collapse, the high velocity fluid in the pump impacts inside the bubble. This impact force [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":22892,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30,41],"tags":[],"class_list":["post-22820","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-pump-knowledge"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.8 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>What is Pump Cavitation? 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