![\"\"](\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2019\/03\/Flashing-Ar-En.jpg\")
<\/p>\n<\/p>\n
Flashing occurs when liquid flows through a control valve and vaporizes, remaining a vapor. It is a direct result of application conditions and fluid properties. It cannot be prevented by a valve, but selecting valves with ideal geometry and materials can help avoid or minimize damage.<\/p>\n
![\"\"](\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2019\/03\/Valve-Falshing-Ani.gif\")
<\/p>\n
\u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u062a\u0628\u064a\u0646 \u0643\u064a\u0641 \u064a\u062d\u062f\u062b \u062a\u0644\u0641 \u062f\u0627\u062e\u0644\u064a \u0646\u062a\u064a\u062c\u0629 \u0627\u0644\u062a\u0628\u062e\u0631 \u0627\u0644\u0641\u062c\u0627\u0626\u064a \u0644\u0644\u0633\u0627\u0626\u0644 \u0627\u0644\u0645\u0627\u0631 \u0639\u0628\u0631 \u0627\u0644\u0635\u0645\u0627\u0645<\/span><\/p>\n *<\/p>\n \u064a\u062d\u062f\u062b \u0627\u0644\u062a\u0628\u062e\u0631 \u0627\u0644\u0641\u062c\u0627\u0626\u064a \u0639\u0646\u062f\u0645\u0627 \u064a\u062a\u062f\u0641\u0642 \u0627\u0644\u0633\u0627\u0626\u0644 \u0639\u0628\u0631 \u0635\u0645\u0627\u0645 \u0627\u0644\u062a\u062d\u0643\u0645 \u0648\u062a\u064a\u0628\u062e\u0631 .<\/span> \u0648\u0647\u0630\u0627 \u0627\u0644\u062a\u0628\u062e\u0631 \u0627\u0644\u0641\u062c\u0627\u0626\u064a \u064a\u062d\u062f\u062b \u0643\u0646\u062a\u064a\u062c\u0629 \u0645\u0628\u0627\u0634\u0631\u0629 \u0644\u0638\u0631\u0648\u0641 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0648 \u0643\u0630\u0644\u0643 \u0644\u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0633\u0648\u0627\u0626\u0644 \u0627\u0644\u0645\u0627\u0631\u0629 \u0639\u0628\u0631 \u0627\u0644\u0635\u0645\u0627\u0645 .<\/span> \u0644\u0627 \u064a\u0645\u0643\u0646 \u0645\u0646\u0639 \u062d\u062f\u0648\u062b\u0647 \u0645\u0646 \u062e\u0644\u0627\u0644 \u0635\u0645\u0627\u0645 \u0627\u0644\u062a\u062d\u0643\u0645 \u060c \u0644\u0643\u0646 \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0647\u0646\u062f\u0633\u064a \u0627\u0644\u0645\u0646\u0627\u0633\u0628 \u0644\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0648\u0645\u0648\u0627\u062f \u0627\u0644\u062a\u0635\u0646\u064a\u0639 \u0627\u0644\u0645\u0646\u0627\u0633\u0628\u0629 \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0633\u0627\u0639\u062f \u0641\u064a \u062a\u062c\u0646\u0628 \u0623\u0648 \u062a\u0642\u0644\u064a\u0644 \u0627\u0644\u0636\u0631\u0631 \u0627\u0644\u0646\u0627\u062a\u062c \u0639\u0646 \u0645\u0634\u0643\u0644\u0629 \u0627\u0644\u062a\u0628\u062e\u0631 \u0627\u0644\u0641\u062c\u0627\u0626\u064a .<\/span><\/span><\/p>\n .<\/p>\n \u0639\u0646\u062f\u0645\u0627 \u064a\u062a\u062f\u0641\u0642 \u0627\u0644\u0633\u0627\u0626\u0644 \u0639\u0628\u0631 \u0645\u0646\u0638\u0648\u0645\u0629 \u0645\u0648\u0627\u0633\u064a\u0631 Piping<\/span> \u060c \u0648\u064a\u0648\u0627\u062c\u0647 \u0627\u062e\u062a\u0646\u0627\u0642 \u060c \u0645\u062b\u0644 \u0627\u062e\u062a\u0646\u0627\u0642 \u062f\u0627\u062e\u0644\u064a \u0644\u0635\u0645\u0627\u0645 \u060c \u0641\u0625\u0646 \u0627\u0644\u0633\u0627\u0626\u0644 \u064a\u062a\u0633\u0627\u0631\u0639 \u0625\u0644\u0649 \u0633\u0631\u0639\u0629 \u0623\u0639\u0644\u0649 \u0644\u0644\u0627\u062d\u062a\u0641\u0627\u0638 \u0628\u0645\u0639\u062f\u0644 \u062a\u062f\u0641\u0642 \u062d\u062c\u0645\u064a \u062b\u0627\u0628\u062a \u0646\u0633\u0628\u064a\u064b\u0627 .<\/span><\/span><\/p>\n \u0625\u0630\u0627 \u0627\u0646\u062e\u0641\u0636 \u0627\u0644\u0636\u063a\u0637 \u062f\u0627\u062e\u0644 \u0645\u0646\u0637\u0642\u0629 \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0645\u0642\u064a\u062f\u0629 (\u062f\u0627\u062e\u0644 \u0627\u0644\u0625\u062e\u062a\u0646\u0627\u0642) \u0625\u0644\u0649 \u0642\u064a\u0645\u0629 \u0623\u0642\u0644 \u0645\u0646 \u0642\u064a\u0645\u0629 \u0636\u063a\u0637 \u062a\u0628\u062e\u0631 \u0627\u0644\u0633\u0627\u0626\u0644 Vapor Pressure<\/span> \u060c \u0648\u0647\u064a \u062d\u0627\u0644\u0629 \u062a\u0633\u0645\u0649 “Vena Contracta<\/span>” \u060c \u064a\u062d\u062f\u062b \u062a\u0628\u062e\u064a\u0631 \u0644\u0644\u0633\u0627\u0626\u0644 (\u0623\u064a \u062a\u062a\u0634\u0643\u0644 \u0641\u0642\u0627\u0639\u0627\u062a \u0627\u0644\u0628\u062e\u0627\u0631 \u0641\u064a \u0627\u0644\u0633\u0627\u0626\u0644) .<\/span> \u0625\u0630\u0627 \u0638\u0644 \u0636\u063a\u0637 \u062e\u0631\u062c \u0627\u0644\u0635\u0645\u0627\u0645 \u0623\u0642\u0644 \u0645\u0646 \u0642\u064a\u0645\u0629 \u0636\u063a\u0637 \u062a\u0628\u062e\u0631 \u0627\u0644\u0633\u0627\u0626\u0644 Vapor Pressure<\/span> \u060c \u064a\u0637\u0644\u0642 \u0639\u0644\u064a \u0647\u0630\u0647 \u0627\u0644\u062d\u0627\u0644\u0629 \u0627\u0633\u0645\u00a0Flashing<\/span> \u060c \u0648\u0633\u064a\u0643\u0648\u0646 \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u062e\u0627\u0631\u062c \u0645\u0646 \u0627\u0644\u0635\u0645\u0627\u0645 \u0641\u064a \u0627\u0644\u063a\u0627\u0644\u0628 \u0641\u064a \u062d\u0627\u0644\u0629 \u062a\u0628\u062e\u0631 .<\/span> \u0647\u0630\u0627 \u0627\u0644\u0646\u0648\u0639 \u0645\u0646 \u0627\u0644\u062a\u062f\u0641\u0642 \u064a\u0645\u0643\u0646\u0647 \u0627\u0644\u062a\u0623\u062b\u064a\u0631 \u0639\u0644\u0649 \u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0635\u0645\u0627\u0645 \u060c \u0641\u0642\u062f \u064a\u062a\u0633\u0628\u0628 \u0630\u0644\u0643 \u0641\u064a \u062d\u062f\u0648\u062b \u0623\u0636\u0631\u0627\u0631 \u062a\u0622\u0643\u0644\u064a\u0629.<\/span> \u0648\u0642\u062f \u064a\u0643\u0648\u0646 \u0647\u0630\u0627 \u0627\u0644\u062a\u0622\u0643\u0644 \u0634\u062f\u064a\u062f\u064b\u0627 \u0648\u0642\u062f \u064a\u062d\u062f\u062b \u062d\u062a\u0649 \u0641\u064a \u062d\u0627\u0644\u0629 \u0639\u062f\u0645 \u0648\u062c\u0648\u062f \u0634\u0648\u0627\u0626\u0628 \u0635\u0644\u0628\u0629 \u0643\u0627\u0634\u0637\u0629 \u0641\u064a \u0627\u0644\u0633\u0627\u0626\u0644 (\u0645\u062b\u0644 \u0627\u0644\u0631\u0645\u0627\u0644) .<\/span><\/span><\/p>\n *<\/p>\n When a liquid is flowing through a piping system, and it encounters a restriction, such as a reduced port valve, it accelerates to a higher velocity to retain a relatively constant volumetric flow rate.<\/p>\n If the local pressure within the restricted flow area drops below the vapor pressure of the liquid fluid, which is a condition called the \u201cvena contracta,\u201d vaporization of fluid occurs (i.e., vapor bubbles would form in the liquid). If the downstream pressure remains below the vapor pressure of fluid, the process condition is said to be flashing, and the outlet stream will be predominantly in a vapor phase. When this flow impinges on valve components, it can cause erosive damage. This erosion can be severe and may occur even when no abrasive solids are present in the liquid.<\/p>\n *<\/p>\n \u0627\u0636\u063a\u0637 \u0647\u0646\u0627 \u0644\u062a\u062a\u0627\u0628\u0639 \u0635\u0641\u062d\u062a\u0646\u0627 \u0639\u0644\u064a \u0627\u0644\u0641\u064a\u0633 \u0628\u0648\u0643 ***************************************************************<\/strong><\/span><\/p>\n <\/p>\n . Flashing occurs when liquid flows through a control valve and vaporizes, remaining a vapor. It is a direct result of application conditions and fluid properties. It cannot be prevented by a valve, but selecting valves with ideal geometry and materials can help avoid or minimize damage. \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u062a\u0628\u064a\u0646 \u0643\u064a\u0641 \u064a\u062d\u062f\u062b \u062a\u0644\u0641 \u062f\u0627\u062e\u0644\u064a \u0646\u062a\u064a\u062c\u0629 \u0627\u0644\u062a\u0628\u062e\u0631 […]<\/p>\n","protected":false},"author":2,"featured_media":3643,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[11],"tags":[275,36,121],"_links":{"self":[{"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/posts\/3642"}],"collection":[{"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/comments?post=3642"}],"version-history":[{"count":5,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/posts\/3642\/revisions"}],"predecessor-version":[{"id":3683,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/posts\/3642\/revisions\/3683"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/media\/3643"}],"wp:attachment":[{"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/media?parent=3642"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/categories?post=3642"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/tags?post=3642"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"\"](\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2019\/03\/Globe-Valve-Open-Ani.gif\")
<\/p>\n![\"\"](\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2019\/03\/Control-Valve_Flashing.jpg\")
<\/p>\n![\"\"](\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/04\/Inst-Sim-Face-ani-small2.gif\")
<\/a>\u0648\u00a0![\"\"](\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2019\/02\/Linked-in-Ani1.gif\")
<\/a><\/span><\/p>\n![\"handwave-yellow\"](\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2016\/11\/handwave-Yellow.gif\")
<\/p>\n\u0645\u0648\u0627\u0636\u064a\u0639 \u0630\u0627\u062a \u0635\u0644\u0629<\/strong><\/span><\/h3>\n
\u00a0.<\/h3>\n
\n
\u0645\u0631\u062d Funny \u2013 \u0635\u0645\u0627\u0645\u0627\u062a Valves<\/a><\/h3>\n<\/li>\n
\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062a\u062d\u0643\u0645 \u0627\u0644\u0645\u0648\u062c\u0648\u062f\u0629 \u0641\u064a \u062c\u0633\u0645 \u0627\u0644\u0625\u0646\u0633\u0627\u0646<\/a><\/h3>\n<\/li>\n
\u0635\u0645\u0627\u0645 \u0627\u0644\u0625\u064a\u0642\u0627\u0641 \u0648\u0639\u062f\u0645 \u0627\u0644\u0631\u062c\u0648\u0639 Stop Check Valve<\/a><\/h3>\n<\/li>\n
\u0635\u0645\u0627\u0645 \u0627\u0644\u0625\u062a\u062c\u0627\u0647 \u0627\u0644\u0648\u0627\u062d\u062f \u0630\u0648 \u0627\u0644\u0642\u0631\u0635 Disc Check Valve<\/a><\/h3>\n<\/li>\n
\u0635\u0645\u0627\u0645 \u0639\u062f\u0645 \u0627\u0644\u0631\u062c\u0648\u0639 Check Valve \u2013 \u062c1<\/a><\/h3>\n<\/li>\n<\/ul>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"