故障現(xiàn)象 The breakdown phenomenon | 產(chǎn)生原因Cause reason | 排除方法remove the method |
閥后壓力不穩(wěn)定隨著閥前壓力變動而變動 After the valve the pressure does not stabilize along with the valve in front of the pressure oscillation but changes | 1、閥芯被異物卡住 2、閥桿、推桿卡住 3、進液管道堵塞 1 valve core is caught by the foreign matter 2 valve lever, the throw out lever catches 3 enters the fluid pipeline to stop up | 1、重新拆裝排除異物 2、重新調(diào)整 3、疏通 1 redisassembles and assembles removes the foreign matter 2 readjusts 3 dredges |
閥后壓力降不下來,始終在需求值上方變動 After the valve the pressure does not get down, in needs above the evaluation to change throughout | 1、設(shè)定彈簧剛度太大 2、閥口徑過大 3、閥前壓力過高,減壓比過大 1 establishes spring steel too to be big 2 valves calibers oversized 3 valves the pressure excessively is high, reduced pressure compared to oversized | 1、更換彈簧 2、更換較小口徑 3、閥前壓:閥后壓超過10:1應(yīng)2級降壓 1 replaces the spring 2 replacements compares the small caliber 3 in front of valves: After the valve the pressure surpasses 10:1 should levels fall the pressure |
閥后壓力升不上去,始終在需求之下方變動 After the valve the pressure con not rise, in needs underneath the evaluation to change throughout | 1、設(shè)定彈簧剛度太小 2、閥口徑過小 3、減壓比過小 1 establishes spring steel too to be small 2 valves calibers excessively are small reduced pressure excessively are smaller than | 1、更換彈簧 2、更換較大口徑 3、閥前壓:閥后壓低于1:25,應(yīng)提高閥前壓 1 replaces the spring 2 replacements heave-caliber 3 in front of valves presses: After the valve pulls down in 1:25 should enhance in front of valve to press |
閥前壓力升不下來,始終在需求值下方變動 After the valve the pressure con not rise, in needs underneath the evaluation to act throughout | 1、設(shè)定彈簧剛度太小 2、閥芯被異物卡住 3、閥桿、推桿卡住 4、閥芯、閥座損壞、泄漏量過大 5、閥口徑太大 1 establishes spring steel too to be small 2 valve cores are caught by the foreign matter 3 valve lever, the throw out lever catches 4 valve core, valve seat damage, spillage oversized 5 valves calibers oversized | 1、更換彈簧 2、重新拆裝 3、重新調(diào)整 4、重新研磨或更換 5、更換較小口徑 1 replaces the spring 2 redisassembles and assembles 3 readjusts 4 regrinds or the replacement 5 replacements compares the small caliber |
閥前壓力降不下去,始終在需求值上方變動 After the valve the pressure con not rise, in needs above the evaluation to act throughout | 1、設(shè)定彈簧剛度太大 2、閥口徑過小 3、閥芯、閥桿、推桿卡住 1 establishes spring steel too to be big 2 valves calibers excessively are small 3 valve core, valve lever, deactivation and so throw out lever | 1、更換彈簧 2、更換較大口徑 3、排除卡死原因,重新調(diào)整 1 replaces the spring 2 replacements heave-caliber 3 removes the deactivation reason, readjusts |
閥后壓或閥前壓波動過于頻繁 After the valve the presses or in front of the presses the undulation too to be frequent | 1、閥口徑過大 2、執(zhí)行機構(gòu)膜室容量太小 1 valve caliber oversized 2 implementing agencies membrane room capacity too is small | 1、選擇恰當?shù)拈y口徑 2、在進液口管道內(nèi)增設(shè)阻尼器 1 choice appropriate valve caliber 2 in enters in the fluid pipeline to additionally build the attenuator |
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