{"id":16367,"date":"2022-06-20T15:29:55","date_gmt":"2022-06-20T15:29:55","guid":{"rendered":"https:\/\/zecovalve.com\/?p=16367"},"modified":"2022-06-20T15:29:56","modified_gmt":"2022-06-20T15:29:56","slug":"double-block-discharge-slab-gate-valve-with-diversion-hole","status":"publish","type":"post","link":"https:\/\/zecovalve.com\/fr\/double-block-discharge-slab-gate-valve-with-diversion-hole.html","title":{"rendered":"Vanne \u00e0 vanne \u00e0 dalle de d\u00e9charge \u00e0 double bloc avec trou de d\u00e9rivation"},"content":{"rendered":"<p>Le robinet-vanne \u00e0 dalle \u00e0 double coupure avec trou de d\u00e9rivation est principalement utilis\u00e9 pour couper le fluide. Il s&#039;agit d&#039;une sorte de vanne de pipeline utilis\u00e9e dans de nombreuses industries, telles que le gaz naturel, le p\u00e9trole, etc.\u00a0<\/p>\n\n\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-main-features-of-slab-gate-valve\">Principales caract\u00e9ristiques du robinet-vanne \u00e0 dalle<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>1. Gr\u00e2ce \u00e0 la structure du trou de d\u00e9rivation, la surface d&#039;\u00e9tanch\u00e9it\u00e9 du si\u00e8ge de vanne est toujours en contact avec le v\u00e9rin lorsque la vanne est ouverte et ferm\u00e9e, ce qui peut efficacement \u00e9viter de rayer la surface d&#039;\u00e9tanch\u00e9it\u00e9 due au fluide entrant dans le si\u00e8ge de vanne, am\u00e9liorant ainsi la Dur\u00e9e de vie de la surface d&#039;\u00e9tanch\u00e9it\u00e9 du si\u00e8ge de soupape, et la soupape peut jouer le r\u00f4le de <a href=\"https:\/\/zecovalve.com\/fr\/understanding-pigging-and-pig-valves-in-industrial-pipelines-zeco-valve-blog.html\/\" data-internallinksmanager029f6b8e52c=\"12\" title=\"raclage\" target=\"_blank\" rel=\"noopener\">raclage<\/a>.<\/li><li>2. Avec une structure \u00e0 double \u00e9tanch\u00e9it\u00e9, la vanne est principalement scell\u00e9e par le si\u00e8ge \u00e0 \u00e9tanch\u00e9it\u00e9 souple. Lorsque le si\u00e8ge \u00e0 \u00e9tanch\u00e9it\u00e9 souple est endommag\u00e9, une seconde \u00e9tanch\u00e9it\u00e9 peut \u00eatre r\u00e9alis\u00e9e dans la surface d&#039;\u00e9tanch\u00e9it\u00e9 m\u00e9tallique superpos\u00e9e sur le si\u00e8ge.<\/li><li>3. Fonction de d\u00e9charge \u00e0 double bloc\u00a0: lorsque la vanne est ferm\u00e9e, pour obtenir un double bloc, les si\u00e8ges de vanne d&#039;entr\u00e9e et de sortie peuvent sceller le fluide du pipeline aux deux extr\u00e9mit\u00e9s du si\u00e8ge de vanne de bloc\u00a0; lorsque la pression dans la cavit\u00e9 de la vanne est anormalement augment\u00e9e, pour obtenir une double fonction de d\u00e9charge, la diff\u00e9rence de pression agissant des deux c\u00f4t\u00e9s du si\u00e8ge de vanne poussera la vanne de pouss\u00e9e du si\u00e8ge de vanne pour \u00e9vacuer la pression dans la cavit\u00e9 dans le pipeline.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-working-principles-of-double-block-drain-valve-seat\">Principes de fonctionnement du si\u00e8ge de vanne de vidange \u00e0 double bloc<\/h2>\n\n\n\n<p>Lorsque la vanne est ferm\u00e9e, la force d&#039;\u00e9tanch\u00e9it\u00e9 initiale de la surface d&#039;\u00e9tanch\u00e9it\u00e9 est assur\u00e9e par le ressort sur le si\u00e8ge de la vanne. Lorsque la pression moyenne entrant dans les canalisations amont et aval de la vanne est p, pour r\u00e9aliser la fonction de double coupure de la vanne, le si\u00e8ge de vanne est pouss\u00e9 vers le v\u00e9rin par la diff\u00e9rence de pression moyenne sur la zone annulaire limit\u00e9e. Lorsque la pression dans la cavit\u00e9 m\u00e9diane de la soupape augmente anormalement, le si\u00e8ge de soupape est pouss\u00e9 loin du v\u00e9rin par la diff\u00e9rence de pression entre les deux c\u00f4t\u00e9s du si\u00e8ge de soupape et la zone annulaire limit\u00e9e, qui surmonte la force du ressort, de sorte que la pression dans la cavit\u00e9 centrale peut \u00eatre d\u00e9charg\u00e9 dans le pipeline \u00e0 travers l&#039;espace entre le v\u00e9rin et le si\u00e8ge de soupape, r\u00e9alisant la fonction d&#039;auto-d\u00e9charge de la pression de la cavit\u00e9 centrale, c&#039;est-\u00e0-dire une double d\u00e9charge.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-summary-of-double-block-discharge-slab-gate-valve\">R\u00e9sum\u00e9 du robinet-vanne \u00e0 dalle de d\u00e9charge \u00e0 double bloc<\/h2>\n\n\n\n<p>Par rapport au robinet-vanne simple ordinaire, le robinet-vanne de refoulement \u00e0 double coupure avec trou de d\u00e9rivation pr\u00e9sente les avantages d&#039;un faible frottement sur la surface d&#039;\u00e9tanch\u00e9it\u00e9 du si\u00e8ge de vanne, d&#039;une longue dur\u00e9e de vie et d&#039;un faible effort d&#039;ouverture. Lorsque la vanne est ferm\u00e9e, les si\u00e8ges de vanne aux deux extr\u00e9mit\u00e9s de l&#039;entr\u00e9e et de la sortie peuvent \u00eatre scell\u00e9s en m\u00eame temps. Lorsque la pression dans la cavit\u00e9 centrale augmente anormalement, la pression dans la cavit\u00e9 centrale peut \u00eatre automatiquement \u00e9vacu\u00e9e dans le pipeline, de sorte que la vanne soit plus s\u00fbre et fiable. Dans certains cas, le robinet-vanne \u00e0 dalle \u00e0 d\u00e9charge \u00e0 double bloc avec trou de guidage peut remplacer le robinet \u00e0 tournant sph\u00e9rique, de sorte que le champ d&#039;application du robinet-vanne \u00e0 dalle est encore \u00e9largi.<\/p>\n\n\n\n<!-- Andy:h-related-tags -->\n<h2 id=\"h-related-tags\">Balises associ\u00e9es :<\/h2>\n<!-- \/Andy:h-related-tags -->\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/fr\/\">Soupape ZECO<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/fr\/introduction-of-epdm-nbr-butterfly-valve-seat-industrial-valve-information-news-zeco-valve.html\/\">Robinet \u00e0 papillon NBR<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/fr\/difference-between-gate-valves-and-ball-valves.html\/\">Vanne et robinet \u00e0 boisseau sph\u00e9rique<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/fr\/gate-valve-problems.html\/\">R\u00e9paration de vannes \u00e0 vanne<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/fr\/advantages-and-disadvantages-of-globe-valves.html\/\">Qu'est-ce qu'un robinet \u00e0 soupape ?<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/fr\/the-function-of-globe-valve-in-pipeline-system.html\/\">Que sont les vannes \u00e0 soupape\u00a0?<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/fr\/produit\/manual-gate-valve\/\">Fabricant de robinets-vannes \u00e0 commande manuelle<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/fr\/what-is-an-axial-flow-silent-check-valve.html\/\">Qu'est-ce qu'un clapet anti-retour axial ?<\/a>\n\n<\/div>\n\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/fr\/difference-between-gate-valve-and-butterfly-valve.html\/\">Diff\u00e9rence entre la vanne \u00e0 vanne et la vanne papillon<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/fr\/china-gate-valves-suppliersnon-rising-stem-gate-valvesks-gate-valves.html\/\">Qu'est-ce qu'un robinet-vanne ?<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/fr\/tag\/shanghai-pressure-reducing-valve-factory\/\">Usine de soupapes de r\u00e9duction de pression de Shanghai<\/a>\n\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Le robinet-vanne \u00e0 dalle \u00e0 double coupure avec trou de d\u00e9rivation est principalement utilis\u00e9 pour couper le fluide. C&#039;est une sorte de\u2026 <a title=\"Vanne \u00e0 vanne \u00e0 dalle de d\u00e9charge \u00e0 double bloc avec trou de d\u00e9rivation\" class=\"read-more\" href=\"https:\/\/zecovalve.com\/fr\/double-block-discharge-slab-gate-valve-with-diversion-hole.html\" aria-label=\"Plus sur Vanne \u00e0 vanne \u00e0 dalle de d\u00e9charge \u00e0 double bloc avec trou de d\u00e9rivation\">Lire plus<\/a><\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":"","footnotes":""},"categories":[1928],"tags":[1079,1163,5],"class_list":["post-16367","post","type-post","status-publish","format-standard","hentry","category-gate-valve","tag-diversion","tag-hole","tag-valve","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"featured_image_src_large":false,"author_info":{"display_name":"Jerry","author_link":"https:\/\/zecovalve.com\/fr\/author\/jerry"},"comment_info":0,"category_info":[{"term_id":1928,"name":"Gate Valve","slug":"gate-valve","term_group":0,"term_taxonomy_id":1928,"taxonomy":"category","description":"","parent":0,"count":48,"filter":"raw","cat_ID":1928,"category_count":48,"category_description":"","cat_name":"Gate Valve","category_nicename":"gate-valve","category_parent":0}],"tag_info":[{"term_id":1079,"name":"diversion","slug":"diversion","term_group":0,"term_taxonomy_id":1079,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1163,"name":"hole","slug":"hole","term_group":0,"term_taxonomy_id":1163,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":5,"name":"valve","slug":"valve","term_group":0,"term_taxonomy_id":5,"taxonomy":"post_tag","description":"","parent":0,"count":117,"filter":"raw"}],"taxonomy_info":{"category":[{"value":1928,"label":"Gate Valve"}],"post_tag":[{"value":1079,"label":"diversion"},{"value":1163,"label":"hole"},{"value":5,"label":"valve"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Double Block Discharge Slab Gate Valve with Diversion Hole - ZECO Valve<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zecovalve.com\/fr\/double-block-discharge-slab-gate-valve-with-diversion-hole.html\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Double Block Discharge Slab Gate Valve with Diversion Hole - ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"The double cut-off slab gate valve with diversion hole is mainly used to cut off the medium. It is a kind of ... 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