{"id":54777,"date":"2022-07-05T20:43:00","date_gmt":"2022-07-06T01:43:00","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-does-cavitation-mean\/"},"modified":"2025-01-21T07:27:33","modified_gmt":"2025-01-21T12:27:33","slug":"what-does-cavitation-mean","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/what-does-cavitation-mean\/","title":{"rendered":"Hi\u1ec7n t\u01b0\u1ee3ng x\u00e2m th\u1ef1c: \u0110\u1ecbnh ngh\u0129a v\u00e0 t\u00e1c \u0111\u1ed9ng"},"content":{"rendered":"<p>Hi\u1ec7n t\u01b0\u1ee3ng cavitation, hay c\u00f2n g\u1ecdi l\u00e0 s\u1ef1 t\u1ea1o xoang, l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh v\u1eadt l\u00fd di\u1ec5n ra trong ch\u1ea5t l\u1ecfng khi \u00e1p su\u1ea5t t\u1ea1i m\u1ed9t \u0111i\u1ec3m gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi \u00e1p su\u1ea5t h\u01a1i b\u00e3o h\u00f2a c\u1ee7a ch\u1ea5t l\u1ecfng t\u1ea1i nhi\u1ec7t \u0111\u1ed9 \u0111\u00f3.  S\u1ef1 gi\u1ea3m \u00e1p su\u1ea5t n\u00e0y c\u00f3 th\u1ec3 do nhi\u1ec1u nguy\u00ean nh\u00e2n, ch\u1eb3ng h\u1ea1n nh\u01b0 s\u1ef1 t\u0103ng t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y, s\u1ef1 rung \u0111\u1ed9ng m\u1ea1nh, ho\u1eb7c s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9t ng\u1ed9t v\u1ec1 h\u00ecnh d\u1ea1ng c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng.  K\u1ebft qu\u1ea3 c\u1ee7a s\u1ef1 gi\u1ea3m \u00e1p su\u1ea5t n\u00e0y l\u00e0 s\u1ef1 h\u00ecnh th\u00e0nh c\u00e1c bong b\u00f3ng h\u01a1i trong l\u00f2ng ch\u1ea5t l\u1ecfng.<\/p>\n<h3>C\u01a1 ch\u1ebf h\u00ecnh th\u00e0nh cavitation<\/h3>\n<p>Khi \u00e1p su\u1ea5t gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi \u00e1p su\u1ea5t h\u01a1i b\u00e3o h\u00f2a, ch\u1ea5t l\u1ecfng b\u1eaft \u0111\u1ea7u chuy\u1ec3n sang tr\u1ea1ng th\u00e1i h\u01a1i, t\u1ea1o th\u00e0nh c\u00e1c bong b\u00f3ng nh\u1ecf li ti.  C\u00e1c bong b\u00f3ng n\u00e0y ch\u1ee9a h\u01a1i v\u00e0 kh\u00ed h\u00f2a tan trong ch\u1ea5t l\u1ecfng.  Ch\u00fang c\u00f3 th\u1ec3 ph\u00e1t tri\u1ec3n r\u1ea5t nhanh v\u00e0 di chuy\u1ec3n theo d\u00f2ng ch\u1ea3y.<\/p>\n<h3>C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn cavitation<\/h3>\n<p>Nhi\u1ec1u y\u1ebfu t\u1ed1 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 h\u00ecnh th\u00e0nh v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a cavitation, bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>\u00c1p su\u1ea5t:<\/strong> \u00c1p su\u1ea5t c\u00e0ng th\u1ea5p, cavitation c\u00e0ng d\u1ec5 x\u1ea3y ra.<\/li>\n<li><strong>Nhi\u1ec7t \u0111\u1ed9:<\/strong> Nhi\u1ec7t \u0111\u1ed9 c\u00e0ng cao, \u00e1p su\u1ea5t h\u01a1i b\u00e3o h\u00f2a c\u00e0ng cao, do \u0111\u00f3 cavitation c\u00e0ng kh\u00f3 x\u1ea3y ra.<\/li>\n<li><strong>T\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y:<\/strong> T\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y c\u00e0ng cao, s\u1ef1 gi\u1ea3m \u00e1p su\u1ea5t c\u1ee5c b\u1ed9 c\u00e0ng l\u1edbn, cavitation c\u00e0ng d\u1ec5 x\u1ea3y ra.<\/li>\n<li><strong>H\u00ecnh d\u1ea1ng \u0111\u01b0\u1eddng \u1ed1ng:<\/strong>  Nh\u1eefng thay \u0111\u1ed5i \u0111\u1ed9t ng\u1ed9t v\u1ec1 h\u00ecnh d\u1ea1ng \u0111\u01b0\u1eddng \u1ed1ng, v\u00ed d\u1ee5 nh\u01b0 co th\u1eaft ho\u1eb7c khu\u1ef7u, c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 gi\u1ea3m \u00e1p su\u1ea5t c\u1ee5c b\u1ed9 v\u00e0 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho cavitation.<\/li>\n<\/ul>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Y\u1ebfu t\u1ed1<\/th>\n<th>\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn cavitation<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u00c1p su\u1ea5t<\/td>\n<td>\u00c1p su\u1ea5t th\u1ea5p th\u00fac \u0111\u1ea9y cavitation<\/td>\n<\/tr>\n<tr>\n<td>Nhi\u1ec7t \u0111\u1ed9<\/td>\n<td>Nhi\u1ec7t \u0111\u1ed9 cao \u1ee9c ch\u1ebf cavitation<\/td>\n<\/tr>\n<tr>\n<td>T\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y<\/td>\n<td>T\u1ed1c \u0111\u1ed9 cao th\u00fac \u0111\u1ea9y cavitation<\/td>\n<\/tr>\n<tr>\n<td>H\u00ecnh d\u1ea1ng \u0111\u01b0\u1eddng \u1ed1ng<\/td>\n<td>Thay \u0111\u1ed5i \u0111\u1ed9t ng\u1ed9t th\u00fac \u0111\u1ea9y cavitation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>H\u1eadu qu\u1ea3 c\u1ee7a cavitation<\/h3>\n<p>Cavitation c\u00f3 th\u1ec3 g\u00e2y ra nhi\u1ec1u h\u1eadu qu\u1ea3 ti\u00eau c\u1ef1c, bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>M\u00f2n:<\/strong> Khi c\u00e1c bong b\u00f3ng cavitation v\u1ee1 ra, ch\u00fang t\u1ea1o ra c\u00e1c s\u00f3ng xung k\u00edch m\u1ea1nh c\u00f3 th\u1ec3 g\u00e2y m\u00f2n b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u ti\u1ebfp x\u00fac v\u1edbi ch\u1ea5t l\u1ecfng.<\/li>\n<li><strong>Rung \u0111\u1ed9ng:<\/strong> S\u1ef1 h\u00ecnh th\u00e0nh v\u00e0 v\u1ee1 c\u1ee7a c\u00e1c bong b\u00f3ng cavitation t\u1ea1o ra ti\u1ebfng \u1ed3n v\u00e0 rung \u0111\u1ed9ng.<\/li>\n<li><strong>Gi\u1ea3m hi\u1ec7u su\u1ea5t:<\/strong> Cavitation c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 b\u01a1m v\u00e0 tua-bin.<\/li>\n<\/ul>\n<h3>\u1ee8ng d\u1ee5ng c\u1ee7a cavitation<\/h3>\n<p>M\u1eb7c d\u00f9 cavitation th\u01b0\u1eddng \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng ti\u00eau c\u1ef1c, n\u00f3 c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong m\u1ed9t s\u1ed1 l\u0129nh v\u1ef1c, ch\u1eb3ng h\u1ea1n nh\u01b0:<\/p>\n<ul>\n<li><strong>Si\u00eau \u00e2m l\u00e0m s\u1ea1ch:<\/strong>  S\u00f3ng si\u00eau \u00e2m t\u1ea1o ra cavitation trong ch\u1ea5t l\u1ecfng, gi\u00fap lo\u1ea1i b\u1ecf b\u1ee5i b\u1ea9n v\u00e0 c\u00e1c ch\u1ea5t b\u00e1m d\u00ednh tr\u00ean b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u.<\/li>\n<li><strong>X\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i:<\/strong> Cavitation c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e2n h\u1ee7y c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m trong n\u01b0\u1edbc th\u1ea3i.<\/li>\n<li><strong>Y h\u1ecdc:<\/strong> Cavitation \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ed9t s\u1ed1 li\u1ec7u ph\u00e1p \u0111i\u1ec1u tr\u1ecb, v\u00ed d\u1ee5 nh\u01b0 ph\u00e1 h\u1ee7y s\u1ecfi th\u1eadn.<\/li>\n<\/ul>\n<h3>Cavitation trong thi\u1ebft b\u1ecb si\u00eau \u00e2m<\/h3>\n<p>Trong thi\u1ebft b\u1ecb si\u00eau \u00e2m, cavitation \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c t\u1ea1o ra c\u00e1c hi\u1ec7u \u1ee9ng l\u00e0m s\u1ea1ch v\u00e0 x\u1eed l\u00fd.  T\u1ea7n s\u1ed1 v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a s\u00f3ng si\u00eau \u00e2m \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 t\u1ea1o ra cavitation hi\u1ec7u qu\u1ea3.<\/p>\n<p>T\u00f3m l\u1ea1i, cavitation l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng ph\u1ee9c t\u1ea1p c\u00f3 th\u1ec3 g\u00e2y ra c\u1ea3 t\u00e1c \u0111\u1ed9ng t\u00edch c\u1ef1c v\u00e0 ti\u00eau c\u1ef1c. Hi\u1ec3u r\u00f5 v\u1ec1 c\u01a1 ch\u1ebf h\u00ecnh th\u00e0nh, c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng v\u00e0 h\u1eadu qu\u1ea3 c\u1ee7a cavitation l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ki\u1ec3m so\u00e1t v\u00e0 \u1ee9ng d\u1ee5ng hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec7n t\u01b0\u1ee3ng cavitation, hay c\u00f2n g\u1ecdi l\u00e0 s\u1ef1 t\u1ea1o xoang, l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh v\u1eadt l\u00fd di\u1ec5n ra trong ch\u1ea5t l\u1ecfng khi \u00e1p su\u1ea5t t\u1ea1i m\u1ed9t \u0111i\u1ec3m gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi \u00e1p su\u1ea5t h\u01a1i b\u00e3o h\u00f2a c\u1ee7a ch\u1ea5t l\u1ecfng t\u1ea1i nhi\u1ec7t \u0111\u1ed9 \u0111\u00f3. S\u1ef1 gi\u1ea3m \u00e1p su\u1ea5t n\u00e0y c\u00f3 th\u1ec3 do nhi\u1ec1u nguy\u00ean nh\u00e2n, ch\u1eb3ng h\u1ea1n<\/p>\n","protected":false},"author":1,"featured_media":20115,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-54777","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/54777","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/comments?post=54777"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/54777\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/20115"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=54777"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=54777"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=54777"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}