{"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":"quest-ce-que-la-cavitation-dune-pompe","status":"publish","type":"post","link":"https:\/\/kingdapump.com\/fr\/what-is-pump-cavitation\/","title":{"rendered":"Qu&#039;est-ce que la cavitation d&#039;une pompe\u00a0? Conseils pour la d\u00e9tecter et la pr\u00e9venir"},"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=\"Banni\u00e8re de pompe-cavitation\" 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\">Qu&#039;est-ce que la cavitation dans une pompe ?<\/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\">La cavitation d&#039;une pompe se produit lorsque la pression du liquide dans la pompe diminue, ce dernier se vaporise, g\u00e9n\u00e9rant de nombreuses bulles. Ces bulles grossissent progressivement.<\/p>\n\n\n\n<p style=\"font-size:18px\">D\u00e8s que la bulle \u00e9clate, le fluide \u00e0 haute vitesse dans la pompe s&#039;y enfonce. Cette force d&#039;impact endommagera la pompe, \u00e9rodera son corps, formera une cavitation et r\u00e9duira sa dur\u00e9e de vie.<\/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\">Pourquoi la cavitation de la pompe se produit-elle ?<\/h3>\n\n\n\n<p style=\"font-size:18px\">Pour comprendre pourquoi pomper <a href=\"https:\/\/en.wikipedia.org\/wiki\/Cavitation\">cavitation<\/a> Lorsque l&#039;eau se transforme en vapeur, il est essentiel de comprendre ses propri\u00e9t\u00e9s physiques. Comme chacun sait, l&#039;eau et la vapeur peuvent se transformer l&#039;une en l&#039;autre. Lorsque la temp\u00e9rature de l&#039;eau reste inchang\u00e9e et que la pression chute \u00e0 un niveau critique, l&#039;eau se vaporise. Cette pression est appel\u00e9e pression de vapeur.<\/p>\n\n\n\n<p style=\"font-size:18px\">Lors de la vaporisation, l&#039;eau \u00e9met de la vapeur et des bulles. Ce processus est appel\u00e9 vaporisation de l&#039;eau, et il est \u00e0 l&#039;origine de la cavitation.<\/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=\"Cavitation \u00e0 l&#039;int\u00e9rieur de la pompe\" 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\">Processus de cavitation de la pompe<\/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\">Tout d&#039;abord, la pression de l&#039;eau dans la pompe diminue, ce qui provoque la vaporisation de l&#039;eau. Ce processus produit une grande quantit\u00e9 de vapeur et le gaz dissous dans l&#039;eau forme des bulles.<\/p>\n\n\n\n<p style=\"font-size:18px\">Lorsque les bulles circulent de la zone basse pression vers la zone haute pression de la pompe avec l&#039;eau, elles se condensent et s&#039;effondrent rapidement sous l&#039;action de la haute pression. L&#039;eau \u00e0 haute pression s&#039;\u00e9coule alors rapidement vers l&#039;espace pr\u00e9c\u00e9demment occup\u00e9 par les bulles.<\/p>\n\n\n\n<p style=\"font-size:18px\">Ensuite, le gaz contenu dans la bulle n&#039;\u00e9tant pas encore condens\u00e9, l&#039;eau \u00e0 grande vitesse se pr\u00e9cipite vers la bulle, la transformant en d&#039;autres petites bulles. Ces derni\u00e8res continueront de se condenser et de s&#039;effondrer sous l&#039;effet de la pression.<\/p>\n\n\n\n<p style=\"font-size:18px\">Enfin, la r\u00e9action de vaporisation est r\u00e9p\u00e9t\u00e9e. Les bulles \u00e0 la surface du canal d&#039;\u00e9coulement et \u00e0 proximit\u00e9 de la turbine auront un impact important sur le mat\u00e9riau et, dans les cas les plus graves, une cavitation en nid d&#039;abeille, voire une rupture des pi\u00e8ces d&#039;usure, se produira. Le gaz actif contenu dans les bulles restera en contact prolong\u00e9 avec le m\u00e9tal, ce qui provoquera sa corrosion.<\/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=\"processus de cavitation\" 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\">Quelles sont les causes de la cavitation de la pompe\u00a0?<\/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=\"Animation de cavitation de pompe\" 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\">Animation de cavitation de pompe<\/h3>\n\n\n\n<p style=\"font-size:18px\">La cavitation des pompes est un probl\u00e8me courant. De nombreuses op\u00e9rations incorrectes peuvent entra\u00eener une cavitation. <\/p>\n\n\n\n<p style=\"font-size:18px\">La cavitation est d\u00e9termin\u00e9e par la capacit\u00e9 anti-cavitation de la pompe et par le dispositif d&#039;aspiration. <\/p>\n\n\n\n<p style=\"font-size:18px\">Voici plusieurs raisons importantes expliquant la cavitation de la pompe.<\/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. La vitesse du moteur est trop \u00e9lev\u00e9e<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Lorsque la vitesse du moteur de la pompe est trop \u00e9lev\u00e9e, le d\u00e9bit \u00e0 l&#039;orifice d&#039;aspiration de la roue augmente. Selon le principe de Bernoulli, lorsque la vitesse augmente, la pression diminue. Lorsque la pression est inf\u00e9rieure \u00e0 la valeur critique de la pression de vapeur, le liquide se vaporise, ce qui entra\u00eene une cavitation de la pompe.<\/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. La r\u00e9sistance du tuyau d&#039;aspiration est trop grande<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Lorsque le tuyau d&#039;aspiration de la pompe est trop long, comporte trop de coudes ou pr\u00e9sente des blocages dans le tuyau, la pression du liquide diminue lors de l&#039;\u00e9coulement dans le tuyau, ce qui peut provoquer une cavitation dans la pompe.<\/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. La hauteur d&#039;installation de la pompe est trop \u00e9lev\u00e9e<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Chaque pompe poss\u00e8de un param\u00e8tre important\u00a0: le NPSH. Si la pompe est install\u00e9e trop haut par rapport au niveau du liquide, sa hauteur d&#039;aspiration positive nette disponible (NPSHHa) sera inf\u00e9rieure \u00e0 sa hauteur d&#039;aspiration positive nette requise (NPSHr), ce qui entra\u00eenera une baisse de la pression d&#039;aspiration et un ph\u00e9nom\u00e8ne de cavitation.<\/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. La temp\u00e9rature du liquide est trop \u00e9lev\u00e9e<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Lorsque la temp\u00e9rature du liquide que nous transportons est trop \u00e9lev\u00e9e, une petite quantit\u00e9 de liquide peut se vaporiser avant d&#039;atteindre l&#039;extr\u00e9mit\u00e9 d&#039;aspiration, ce qui augmente le risque de cavitation de la pompe.<\/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. Plusieurs pompes en parall\u00e8le<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Lorsque nos conditions de travail sont plus compliqu\u00e9es et que nous utilisons plusieurs pompes en parall\u00e8le pour transporter des liquides, si les pompes parall\u00e8les sont configur\u00e9es de mani\u00e8re in\u00e9gale, le d\u00e9bit d&#039;une pompe sera trop faible, la pression \u00e0 l&#039;extr\u00e9mit\u00e9 d&#039;aspiration diminuera et une cavitation de la pompe se produira.<\/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\">Comment identifier la cavitation\u00a0? Dommages caus\u00e9s par la cavitation d&#039;une pompe<\/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>Dommages aux pi\u00e8ces d&#039;usure<\/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\">La cavitation de la pompe aura un impact sur la <a href=\"https:\/\/kingdapump.com\/fr\/pieces-de-pompe\/pieces-dusure-de-la-partie-humide-pour-pompe-a-boues\/\">pi\u00e8ces d&#039;usure<\/a>, provoquant une cavitation en nid d&#039;abeille sur les pi\u00e8ces d&#039;usure, et m\u00eame la rupture ou la corrosion des pi\u00e8ces d&#039;usure.<\/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=\"Dommages caus\u00e9s par la cavitation\" 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=\"maintenance-pompe-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>Vibration<\/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\">Lorsque la fr\u00e9quence de pulsation de la cavitation de la pompe est proche de la fr\u00e9quence naturelle de la pompe pendant le fonctionnement, elle provoquera \u00e9galement des vibrations violentes de la pompe.<\/p>\n\n\n\n<p style=\"font-size:18px\">En cas de vibration, le manom\u00e8tre fluctue.<\/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>Augmentation de la temp\u00e9rature des roulements<\/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\">La cavitation de la pompe provoque de violentes vibrations, augmente les frottements et la temp\u00e9rature des roulements. Utilisez un thermom\u00e8tre pour mesurer la temp\u00e9rature des roulements.<\/p>\n\n\n\n<p style=\"font-size:18px\">Si la temp\u00e9rature du roulement est plus \u00e9lev\u00e9e que d&#039;habitude, une cavitation peut s&#039;\u00eatre produite.<\/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=\"maintenance-pompe-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=\"Bruit\" 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>Bruit<\/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\">Lorsque la cavitation de la pompe se produit, un grand nombre de bulles s&#039;effondrent et le d\u00e9bit d&#039;eau \u00e0 grande vitesse a un impact, provoquant un bruit important.<\/p>\n\n\n\n<p style=\"font-size:18px\">Le son de la cavitation est similaire au bruit d&#039;une pierre frappant du m\u00e9tal, et le son augmentera ou diminuera avec le d\u00e9bit.<\/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>Diminution de l&#039;efficacit\u00e9<\/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\">Le grand nombre de bulles produites par la cavitation de la pompe entravera l&#039;\u00e9coulement de l&#039;eau, entra\u00eenant une diminution du d\u00e9bit, une t\u00eate de pompe instable et une efficacit\u00e9 r\u00e9duite de la pompe.<\/p>\n\n\n\n<p style=\"font-size:18px\">Lorsque la valeur du d\u00e9bitm\u00e8tre s&#039;av\u00e8re inf\u00e9rieure de 10% \u00e0 la valeur attendue, on peut en d\u00e9duire qu&#039;une cavitation s&#039;est produite.<\/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=\"Diminution de l&#039;efficacit\u00e9\" 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=\"Qu&#039;est-ce que la t\u00eate de pompe\" 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\/fr\/tete-de-pompe\/\" style=\"border-radius:15px;background-color:#1f365c\">Voir plus &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=\"Contact de panne de pompe\" 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\/fr\/panne-de-pompe\/\" style=\"border-radius:15px;background-color:#1f365c\">Voir plus &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\">Comment \u00e9viter la cavitation de la pompe ?<\/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. R\u00e9duire la vitesse du moteur de la pompe<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">R\u00e9glage de la vitesse du moteur \u00e0 la vitesse appropri\u00e9e selon le tableau des param\u00e8tres de la pompe ou <a href=\"https:\/\/kingdapump.com\/fr\/courbe-de-pompe\/\">courbe de performance de la pompe<\/a> \u00e9vitera efficacement la cavitation.<\/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. Conception du pipeline<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Am\u00e9liorez la conception du tuyau d&#039;aspiration, r\u00e9duisez le nombre de coudes, permettez \u00e0 l&#039;eau de toujours s&#039;\u00e9couler avec une efficacit\u00e9 plus \u00e9lev\u00e9e et r\u00e9duisez la perte par frottement de l&#039;eau dans le tuyau.<\/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. Installez correctement la pompe<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Chaque pompe pr\u00e9sente une marge de cavitation NPSH (NPSH). Avant l&#039;installation, la pompe doit \u00eatre install\u00e9e selon les param\u00e8tres pr\u00e9d\u00e9finis afin de garantir que la marge de cavitation NPSHr est sup\u00e9rieure \u00e0 la marge de cavitation 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. Entretien r\u00e9gulier<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Une fois la pompe install\u00e9e, un entretien r\u00e9gulier doit \u00eatre effectu\u00e9 conform\u00e9ment au manuel d&#039;utilisation fourni par le fabricant de la pompe, comme la v\u00e9rification de la temp\u00e9rature des roulements, l&#039;inspection r\u00e9guli\u00e8re de l&#039;usure de la roue, les vibrations de la pompe, 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. Choisir la bonne pompe<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Avant de commencer votre projet, vous devriez demander au <a href=\"http:\/\/kingdapump.com\/fr\/\">fabricant de pompes<\/a> Concevoir votre projet pour garantir que la pompe choisie r\u00e9ponde aux attentes du projet. C&#039;est le meilleur moyen de pr\u00e9venir la cavitation et de minimiser son risque.<\/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=\"contact\" 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\">Contactez un expert d\u00e8s aujourd&#039;hui !<\/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\">Types de cavitation<\/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>Types de cavitation<\/strong><\/td><td><strong>Cause<\/strong><\/td><td><strong>Sites de cavitation courants<\/strong><\/td><\/tr><tr><td>Cavitation vaporeuse<\/td><td>La pression du liquide diminue, se vaporisant pour former des bulles<\/td><td><a href=\"https:\/\/kingdapump.com\/fr\/pieces-de-pompe\/pieces-dusure-de-la-partie-humide-pour-pompe-a-boues\/turbine-de-pompe-a-lisier\/\">turbine<\/a> entr\u00e9e<\/td><\/tr><tr><td>Turbulence Cavitation<\/td><td>Le d\u00e9bit dans la volute ou la pompe est trop \u00e9lev\u00e9, ce qui entra\u00eene une diminution de la pression et la formation de bulles.<\/td><td>Surface de <a href=\"https:\/\/kingdapump.com\/fr\/pieces-de-pompe\/pieces-dusure-de-la-partie-humide-pour-pompe-a-boues\/chemise-de-volute-de-pompe-a-lisier\/\">volute<\/a><\/td><\/tr><tr><td>Cavitation inertielle<\/td><td>Le d\u00e9bit est trop \u00e9lev\u00e9, ce qui provoque un impact sur la pompe et la formation de bulles.<\/td><td>turbine<\/td><\/tr><tr><td>Cavitation vortex<\/td><td>Le flux d&#039;eau est en forme de vortex et le gaz est aspir\u00e9 dans la pompe<\/td><td>Entr\u00e9e de la pompe<\/td><\/tr><tr><td>Cavitation gazeuse<\/td><td>La pression du liquide diminue et le gaz dissous dans le liquide forme des bulles<\/td><td><a href=\"https:\/\/kingdapump.com\/fr\/pompe-a-lisier\/pompe-a-lisier-horizontale\/pompe-chimique-petroliere-lc\/\">pompes chimiques<\/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\">FAQ sur la cavitation des pompes<\/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\">Qu&#039;est-ce que la cavitation dans une pompe centrifuge ?<\/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. Causes de cavitation dans une pompe centrifuge<\/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\">Les pompes centrifuges sont plus sujettes \u00e0 la cavitation que les autres pompes (pompes volum\u00e9triques), ce qui est d\u00e9termin\u00e9 par le principe de fonctionnement des pompes centrifuges.<\/p>\n\n\n\n<p style=\"font-size:18px\">Le principe de fonctionnement d&#039;une pompe centrifuge est le suivant\u00a0: la rotation \u00e0 grande vitesse de la roue g\u00e9n\u00e8re une force centrifuge pour aspirer le fluide. Cette rotation g\u00e9n\u00e8re une d\u00e9pression autour de la roue. Lorsque la pression du fluide \u00e0 l&#039;entr\u00e9e de la pompe est insuffisante, une partie du liquide se vaporise, entra\u00eenant l&#039;entr\u00e9e de vapeur d&#039;eau dans la pompe.<\/p>\n\n\n\n<p style=\"font-size:18px\">Lorsque la vapeur d&#039;eau passe de l&#039;entr\u00e9e \u00e0 la roue, c&#039;est-\u00e0-dire d&#039;un \u00e9tat de pression n\u00e9gative \u00e0 un \u00e9tat de haute pression, les bulles \u00e9clatent, provoquant des vibrations de la pompe centrifuge et une cavitation de la pompe.<\/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. Comment \u00e9viter la cavitation dans une pompe centrifuge ?<\/h4>\n\n\n\n<p style=\"font-size:18px\">\u2160. Assurez-vous que la pompe centrifuge a suffisamment de NPSH pour \u00e9viter une pression d&#039;entr\u00e9e trop basse.<\/p>\n\n\n\n<p style=\"font-size:18px\">\u2161. Habituellement, lorsque le d\u00e9bit de la pompe centrifuge est instable, une cavitation est susceptible de se produire, le d\u00e9bit stable de la pompe centrifuge doit donc \u00eatre contr\u00f4l\u00e9.<\/p>\n\n\n\n<p style=\"font-size:18px\">\u2162. Avant d&#039;installer la pompe centrifuge, une conception compl\u00e8te de la canalisation doit \u00eatre r\u00e9alis\u00e9e pour \u00e9viter trop de coudes ou des tuyaux trop \u00e9troits.<\/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\">Quand on change la pompe, y a-t-il de la cavitation ?<\/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\">En cas de cavitation, il n&#039;est pas n\u00e9cessaire de remplacer la pompe imm\u00e9diatement. Il est essentiel d&#039;en comprendre la cause r\u00e9elle et de tenter de la r\u00e9soudre.<\/p>\n\n\n\n<p style=\"font-size:18px\">Par exemple, nous pouvons contr\u00f4ler la vitesse de la pompe en fonction du manuel d&#039;utilisation ou de la courbe de performance de la pompe pour modifier le d\u00e9bit ou la hauteur de la pompe afin de garantir que la pompe maintient des performances optimales.<\/p>\n\n\n\n<p style=\"font-size:18px\">Ce n&#039;est que lorsque la cavitation \u00e9rode les composants principaux de la pompe, tels que la roue et le joint, entra\u00eenant une r\u00e9duction de l&#039;efficacit\u00e9 de la pompe ou un dysfonctionnement, que nous devons envisager de remplacer la pompe ou de contacter l&#039;ing\u00e9nieur apr\u00e8s-vente du fabricant de la pompe pour un entretien et une r\u00e9paration professionnels.<\/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\">Qu&#039;est-ce que la cavitation d&#039;une pompe volum\u00e9trique ?<\/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\">Par rapport aux pompes centrifuges, les pompes volum\u00e9triques sont moins sujettes \u00e0 la cavitation car le principe de fonctionnement des pompes volum\u00e9triques est diff\u00e9rent de celui des pompes centrifuges.<\/p>\n\n\n\n<p style=\"font-size:18px\">Le principe de fonctionnement d&#039;une pompe volum\u00e9trique consiste \u00e0 presser le fluide \u00e0 travers le volume de la pompe, c&#039;est-\u00e0-dire \u00e0 travers le mouvement alternatif du piston ou du plongeur, et \u00e0 modifier p\u00e9riodiquement le volume de la pompe pour r\u00e9aliser la fonction de transport du fluide.<\/p>\n\n\n\n<p style=\"font-size:18px\">\u00c9tant donn\u00e9 que son d\u00e9bit et sa pression sont plus stables et ne provoquent pas de changements de pression importants \u00e0 l&#039;entr\u00e9e de la pompe, les pompes volum\u00e9triques ne cavitent pratiquement pas.<\/p>\n\n\n\n<p style=\"font-size:18px\">Cependant, cela ne signifie pas que les pompes volum\u00e9triques ne cavitent pas. Lorsqu&#039;une pompe volum\u00e9trique transporte une boue de mousse, si elle ne parvient pas \u00e0 mieux dissiper la mousse, elle risque de caviter.<\/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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