{"id":49346,"date":"2019-11-17T19:41:14","date_gmt":"2019-11-17T18:41:14","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/quest-ce-que-la-turbine-lp-turbine-a-vapeur-basse-pression-definition\/"},"modified":"2020-02-19T13:51:11","modified_gmt":"2020-02-19T12:51:11","slug":"quest-ce-que-la-turbine-lp-turbine-a-vapeur-basse-pression-definition","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-la-turbine-lp-turbine-a-vapeur-basse-pression-definition\/","title":{"rendered":"Qu&#8217;est-ce que la turbine LP &#8211; Turbine \u00e0 vapeur basse pression &#8211; D\u00e9finition"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\">La turbine BP (turbine \u00e0 basse pression) est g\u00e9n\u00e9ralement une turbine \u00e0 r\u00e9action \u00e0 double flux comportant environ 5 \u00e0 8 \u00e9tages (avec des aubes envelopp\u00e9es et des aubes libres des 3 derniers \u00e9tages).\u00a0G\u00e9nie thermique<\/div>\n<\/div>\n<div class=\"su-divider su-divider-style-dotted\"><\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights lgc-first\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<h2>Turbine LP &#8211; Turbine \u00e0 vapeur basse pression<\/h2>\n<p>La plupart des\u00a0<strong>centrales nucl\u00e9aires<\/strong>\u00a0utilisent un\u00a0<strong>turbog\u00e9n\u00e9rateur \u00e0<\/strong>\u00a0un\u00a0<strong>seul arbre<\/strong>\u00a0compos\u00e9 d\u2019une\u00a0<strong>turbine HP \u00e0 plusieurs \u00e9tages<\/strong>\u00a0et de\u00a0<strong>trois\u00a0<\/strong><strong>turbines\u00a0<\/strong><strong>parall\u00e8les \u00e0 plusieurs \u00e9tages<\/strong>\u00a0, d\u2019un g\u00e9n\u00e9rateur principal et d\u2019un excitateur.<\/p>\n<p>Chaque\u00a0<strong>turbine BP<\/strong>\u00a0(\u00a0<strong>turbine \u00e0<\/strong>\u00a0basse pression) est g\u00e9n\u00e9ralement une turbine \u00e0 r\u00e9action \u00e0 double flux comportant environ 5 \u00e0 8 \u00e9tages (avec des aubes \u00e0 enveloppe et des aubes libres des 3 derniers \u00e9tages).\u00a0Les turbines BP produisent environ 60 \u00e0 70% de la puissance brute produite par le groupe \u00e9lectrog\u00e8ne.\u00a0Chaque rotor de turbine est mont\u00e9 sur deux roulements, c\u2019est-\u00e0-dire qu\u2019il existe des doubles roulements entre chaque \u00e9l\u00e9ment de la turbine.<\/p>\n<p>La turbine BP est g\u00e9n\u00e9ralement \u00e9quip\u00e9e de 3 ou 4 lignes d\u2019extraction \u00e0 autor\u00e9gulation, qui servent \u00e0 fournir de la vapeur pour:<\/p>\n<ul>\n<li>les r\u00e9chauffeurs d&#8217;eau d&#8217;alimentation basse pression<\/li>\n<\/ul>\n<p>Dans la turbine BP, l&#8217;\u00e9tage basse pression re\u00e7oit de la\u00a0<a href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-steam-proprietes-de-steam-definition\/\">vapeur<\/a>\u00a0(cette vapeur est g\u00e9n\u00e9ralement de la vapeur surchauff\u00e9e &#8211; point E sur la figure; ~\u00a0<strong>1,15 MPa<\/strong>\u00a0; 250 \u00b0 C) provenant d&#8217;un r\u00e9chauffeur s\u00e9parateur d&#8217;humidit\u00e9 (MSR).\u00a0La vapeur de la turbine HP doit \u00eatre r\u00e9chauff\u00e9e afin d&#8217;\u00e9viter les dommages pouvant \u00eatre caus\u00e9s aux aubes de la turbine \u00e0 vapeur par\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-nuclear-engineering\/properties-steam-what-is-steam\/vapor-quality-dryness-fraction\/\">de la vapeur de qualit\u00e9 inf\u00e9rieure<\/a>\u00a0.\u00a0Une teneur \u00e9lev\u00e9e en gouttelettes d\u2019eau peut provoquer l\u2019impact et l\u2019\u00e9rosion rapides des pales lors de la projection d\u2019eau condens\u00e9e sur les pales.\u00a0La vapeur exempte d\u2019humidit\u00e9 est surchauff\u00e9e par la vapeur d\u2019extraction de l\u2019\u00e9tage haute pression de la turbine et par la vapeur directement des lignes de vapeur principales.<\/p>\n<p>Dans la turbine \u00e0 basse pression, la vapeur se d\u00e9tend en continu du point E au F. La vapeur \u00e9vacu\u00e9e se condense ensuite dans le condenseur et se trouve \u00e0 une pression bien inf\u00e9rieure \u00e0 la pression atmosph\u00e9rique (pression absolue de\u00a0<strong>0,008 MPa<\/strong>\u00a0).\u00a0La vapeur est \u00e0 l\u2019\u00e9tat partiellement condens\u00e9 (point F), d\u2019une qualit\u00e9 voisine de 90%.\u00a0Les \u00e9tages haute pression et basse pression de la turbine sont g\u00e9n\u00e9ralement sur le m\u00eame arbre pour entra\u00eener un g\u00e9n\u00e9rateur commun, mais ils ont des bo\u00eetiers distincts.\u00a0Le g\u00e9n\u00e9rateur principal produit de l&#8217;\u00e9nergie \u00e9lectrique qui est fournie au r\u00e9seau \u00e9lectrique.<\/p>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights lgc-last\">\n<div class=\"inside-grid-column\">\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Steam-Turbine-types.png\"><img loading=\"lazy\" class=\"aligncenter size-medium wp-image-17901 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Steam-Turbine-types-300x194.png\" alt=\"Turbine \u00e0 vapeur - types\" width=\"300\" height=\"194\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Steam-Turbine-types-300x194.png\" \/><\/a><\/p>\n<figure id=\"attachment_17781\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-17781\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Rankine-Cycle-Ts-diagram.png\"><img loading=\"lazy\" class=\"size-full wp-image-17781 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Rankine-Cycle-Ts-diagram.png\" alt=\"Cycle de Rankine - Diagramme Ts\" width=\"649\" height=\"598\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Rankine-Cycle-Ts-diagram.png\" \/><\/a><figcaption id=\"caption-attachment-17781\" class=\"wp-caption-text\">Cycle de Rankine &#8211; Diagramme Ts<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><\/div>\n<div tabindex=\"0\" role=\"button\"><\/div>\n<div tabindex=\"0\" role=\"button\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Steam-Turbine-scheme-min.png\"><img loading=\"lazy\" class=\"size-large wp-image-17846 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Steam-Turbine-scheme-min-1024x529.png\" alt=\"Turbine \u00e0 vapeur de PWR 3000 MWth typique\" width=\"669\" height=\"346\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Steam-Turbine-scheme-min-1024x529.png\" \/><\/a><\/div>\n<div tabindex=\"0\" role=\"button\"><\/div>\n<div tabindex=\"0\" role=\"button\"><span>Sch\u00e9ma d&#8217;une turbine \u00e0 vapeur d&#8217;un REP typique de 3 000 MWth.<\/span><\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights lgc-last\">\n<div class=\"inside-grid-column\">\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>Cet article est bas\u00e9 sur la traduction automatique de l&#8217;article original en anglais. Pour plus d&#8217;informations, voir l&#8217;article en anglais. Pouvez vous nous aider Si vous souhaitez corriger la traduction, envoyez-la \u00e0 l&#8217;adresse: translations@nuclear-power.com ou remplissez le formulaire de traduction en ligne. Nous appr\u00e9cions votre aide, nous mettrons \u00e0 jour la traduction le plus rapidement possible. Merci<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>La turbine BP (turbine \u00e0 basse pression) est g\u00e9n\u00e9ralement une turbine \u00e0 r\u00e9action \u00e0 double flux comportant environ 5 \u00e0 8 \u00e9tages (avec des aubes envelopp\u00e9es et des aubes libres des 3 derniers \u00e9tages).\u00a0G\u00e9nie thermique Turbine LP &#8211; Turbine \u00e0 vapeur basse pression La plupart des\u00a0centrales nucl\u00e9aires\u00a0utilisent un\u00a0turbog\u00e9n\u00e9rateur \u00e0\u00a0un\u00a0seul arbre\u00a0compos\u00e9 d\u2019une\u00a0turbine HP \u00e0 plusieurs \u00e9tages\u00a0et &#8230; <a title=\"Qu&#8217;est-ce que la turbine LP &#8211; Turbine \u00e0 vapeur basse pression &#8211; D\u00e9finition\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-la-turbine-lp-turbine-a-vapeur-basse-pression-definition\/\" aria-label=\"En savoir plus sur Qu&#8217;est-ce que la turbine LP &#8211; Turbine \u00e0 vapeur basse pression &#8211; D\u00e9finition\">Lire la suite<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[8],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Qu&#039;est-ce que la turbine LP - Turbine \u00e0 vapeur basse pression - D\u00e9finition<\/title>\n<meta name=\"description\" content=\"La turbine BP (turbine \u00e0 basse pression) est g\u00e9n\u00e9ralement une turbine \u00e0 r\u00e9action \u00e0 double flux comportant environ 5 \u00e0 8 \u00e9tages (avec des aubes envelopp\u00e9es et des aubes libres des 3 derniers \u00e9tages). 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