{"id":3857,"date":"2024-07-29T12:40:07","date_gmt":"2024-07-29T12:40:07","guid":{"rendered":"https:\/\/sinovalveco.com\/?p=3857"},"modified":"2024-08-25T15:40:30","modified_gmt":"2024-08-25T15:40:30","slug":"understanding-the-differences-between-double-block-and-bleed-dbb-and-double-isolation-bleed-dib-valves","status":"publish","type":"post","link":"https:\/\/ntgdvalve.com\/pt\/understanding-the-differences-between-double-block-and-bleed-dbb-and-double-isolation-bleed-dib-valves\/","title":{"rendered":"Entendendo as diferen\u00e7as entre as v\u00e1lvulas de duplo bloqueio e sangria (DBB) e de duplo isolamento e sangria (DIB)"},"content":{"rendered":"<p>No \u00e2mbito do projeto, da sele\u00e7\u00e3o e da seguran\u00e7a industrial do sistema de tubula\u00e7\u00e3o, \u00e9 fundamental compreender as diferen\u00e7as entre as v\u00e1lvulas de Duplo Bloqueio e Purga (DBB) e as v\u00e1lvulas de Duplo Isolamento e Purga (DIB). Este blog tem como objetivo elucidar as disparidades fundamentais entre cada tipo de v\u00e1lvula e esclarecer suas aplica\u00e7\u00f5es.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u00cdndice<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Alternar tabela de conte\u00fado\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Alternar<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #0a0a0a;color:#0a0a0a\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #0a0a0a;color:#0a0a0a\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/ntgdvalve.com\/pt\/understanding-the-differences-between-double-block-and-bleed-dbb-and-double-isolation-bleed-dib-valves\/#Double_Block_and_Bleed_Valve_DBB\" >V\u00e1lvula de bloqueio e sangria dupla (DBB)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/ntgdvalve.com\/pt\/understanding-the-differences-between-double-block-and-bleed-dbb-and-double-isolation-bleed-dib-valves\/#Double_Isolation_and_Bleed_Valve_DIB\" >V\u00e1lvula dupla de isolamento e sangria (DIB)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/ntgdvalve.com\/pt\/understanding-the-differences-between-double-block-and-bleed-dbb-and-double-isolation-bleed-dib-valves\/#Differences_between_DBB_and_DIB_Valves\" >Diferen\u00e7as entre as v\u00e1lvulas DBB e DIB<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/ntgdvalve.com\/pt\/understanding-the-differences-between-double-block-and-bleed-dbb-and-double-isolation-bleed-dib-valves\/#DBB_Valve\" >V\u00e1lvula DBB<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/ntgdvalve.com\/pt\/understanding-the-differences-between-double-block-and-bleed-dbb-and-double-isolation-bleed-dib-valves\/#DIB_Valve\" >V\u00e1lvula DIB<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/ntgdvalve.com\/pt\/understanding-the-differences-between-double-block-and-bleed-dbb-and-double-isolation-bleed-dib-valves\/#Factors_to_Consider_When_Selecting_Between_DBB_and_DIB_Valves\" >Fatores a serem considerados na escolha entre as v\u00e1lvulas DBB e DIB<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Double_Block_and_Bleed_Valve_DBB\"><\/span>V\u00e1lvula de bloqueio e sangria dupla (DBB)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Uma v\u00e1lvula DBB \u00e9 projetada para aprimorar dois pontos de isolamento em linha, criando uma barreira entre as se\u00e7\u00f5es ascendentes e descendentes de um sistema de tubula\u00e7\u00e3o. Isso evita a contamina\u00e7\u00e3o cruzada ou a contamina\u00e7\u00e3o entre dois fluxos de fluido. Comumente usadas em aplica\u00e7\u00f5es petroqu\u00edmicas, de petr\u00f3leo e g\u00e1s, as v\u00e1lvulas DBB consistem em duas v\u00e1lvulas de corte interconectadas, mas separadas, e uma linha de sangria interconectada.<\/p>\n<p>No primeiro est\u00e1gio, uma v\u00e1lvula de isolamento garante o fechamento perfeito do fluido a montante, evitando que ele flua para jusante. O segundo est\u00e1gio usa outra v\u00e1lvula de isolamento para criar uma barreira adicional, enquanto uma linha de sangria conecta as duas v\u00e1lvulas para liberar qualquer umidade ou press\u00e3o do sistema. A sele\u00e7\u00e3o de uma v\u00e1lvula DBB \u00e9 fundamental, especialmente ao manusear meios perigosos e vol\u00e1teis, pois a comunica\u00e7\u00e3o zero entre os fluidos a montante e a jusante \u00e9 essencial para a seguran\u00e7a.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-3858 aligncenter\" src=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2024\/01\/QQ\u622a\u56fe20240131161034.jpg\" alt=\"\" width=\"895\" height=\"624\" srcset=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2024\/01\/QQ\u622a\u56fe20240131161034.jpg 895w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2024\/01\/QQ\u622a\u56fe20240131161034-600x418.jpg 600w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2024\/01\/QQ\u622a\u56fe20240131161034-768x535.jpg 768w\" sizes=\"(max-width: 895px) 100vw, 895px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Double_Isolation_and_Bleed_Valve_DIB\"><\/span>V\u00e1lvula dupla de isolamento e sangria (DIB)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A v\u00e1lvula DIB \u00e9 uma v\u00e1lvula especializada usada em sistemas de tubula\u00e7\u00e3o, combinando al\u00edvio de press\u00e3o e isolamento em dois est\u00e1gios. Ela facilita o fechamento r\u00e1pido, principalmente no transporte de fluidos perigosos. Amplamente empregada em usinas de g\u00e1s e petr\u00f3leo, instala\u00e7\u00f5es de armazenamento a frio, processos industriais e usinas nucleares, o est\u00e1gio interno serve como o principal ponto de isolamento, isolando totalmente o fluido e o sistema. O segundo est\u00e1gio consiste em dois pontos de ventila\u00e7\u00e3o separados para liberar com seguran\u00e7a a press\u00e3o no lado a jusante, evitando problemas de seguran\u00e7a.<\/p>\n<p>As v\u00e1lvulas DIB, normalmente fabricadas com materiais anticorrosivos, como a\u00e7o inoxid\u00e1vel e a\u00e7o carbono, apresentam uma vida \u00fatil mais longa. Seus volumes internos s\u00e3o projetados para eliminar a necessidade de vasos de drenagem ou de conten\u00e7\u00e3o em grande escala, tornando-os adequados para espa\u00e7os de instala\u00e7\u00e3o limitados.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Differences_between_DBB_and_DIB_Valves\"><\/span>Diferen\u00e7as entre as v\u00e1lvulas DBB e DIB<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>As v\u00e1lvulas DBB e DIB desempenham pap\u00e9is vitais no setor de g\u00e1s e petr\u00f3leo, controlando o fluxo de fluidos em sistemas de processo e tubula\u00e7\u00f5es. Compreender as principais diferen\u00e7as \u00e9 fundamental para selecionar a v\u00e1lvula apropriada para uma aplica\u00e7\u00e3o espec\u00edfica:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"DBB_Valve\"><\/span>V\u00e1lvula DBB<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>Opera com dois componentes de fechamento e uma v\u00e1lvula de sangria entre eles, criando um arranjo duplo de bloqueio e sangria para isolamento.<\/li>\n<li>Utiliza duas c\u00e2maras seladas para aprimorar os recursos de seguran\u00e7a.<\/li>\n<li>Complexo e de grande porte, ocupando um amplo espa\u00e7o de instala\u00e7\u00e3o.<\/li>\n<li>A v\u00e1lvula de sangria libera o ac\u00famulo de press\u00e3o para abertura e fechamento seguros.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"DIB_Valve\"><\/span>V\u00e1lvula DIB<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>Usa uma \u00fanica veda\u00e7\u00e3o para isolamento, resultando em um projeto mais simples e econ\u00f4mico do que o DBB.<\/li>\n<li>Menor em tamanho, adequado para instala\u00e7\u00f5es com espa\u00e7o limitado.<\/li>\n<li>Funciona com tr\u00eas elementos de fechamento e uma v\u00e1lvula de sangria.<\/li>\n<li>Fornece um n\u00edvel extra de isolamento, adequado para \u00e1reas onde o vazamento pode ter consequ\u00eancias graves.<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-3861 aligncenter\" src=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2024\/01\/image003.png\" alt=\"\" width=\"534\" height=\"240\" \/><\/p>\n<p style=\"text-align: center;\"><strong>Figura:<\/strong> Um esquema da v\u00e1lvula DBB \u00e0 esquerda e da v\u00e1lvula DIB \u00e0 direita.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Factors_to_Consider_When_Selecting_Between_DBB_and_DIB_Valves\"><\/span>Fatores a serem considerados na escolha entre as v\u00e1lvulas DBB e DIB<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol>\n<li><strong>Espa\u00e7o dispon\u00edvel:<\/strong> Considere as restri\u00e7\u00f5es de espa\u00e7o para a instala\u00e7\u00e3o.<\/li>\n<li><strong>N\u00edvel de seguran\u00e7a exigido:<\/strong> Avalie a import\u00e2ncia do isolamento e da seguran\u00e7a em seu aplicativo.<\/li>\n<li><strong>Restri\u00e7\u00f5es or\u00e7ament\u00e1rias:<\/strong> Avalie a viabilidade econ\u00f4mica de cada tipo de v\u00e1lvula.<\/li>\n<li><strong>Benef\u00edcios e recursos espec\u00edficos:<\/strong> Entenda as vantagens exclusivas oferecidas pelas v\u00e1lvulas DBB e DIB.<\/li>\n<\/ol>\n<p>Em conclus\u00e3o, uma compreens\u00e3o abrangente das nuances dessas v\u00e1lvulas permite que voc\u00ea tome decis\u00f5es informadas com base nos requisitos espec\u00edficos do seu sistema de tubula\u00e7\u00e3o.<\/p>","protected":false},"excerpt":{"rendered":"<p>In the realm of piping system design, selection, and industrial safety, comprehending the distinctions between Double Block and Bleed (DBB) [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":3859,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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