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原文：
 可调式减压阀的串压问题，不是常见现象，却也是可能出现的故障问题，作为使用者，我们还是需要好好了解一下，并要掌握其原因分析及解决的能力： 　　在使用的过程中可调式减压阀为什么会出现串压问题呢？ 　　由于减压阀后管段处管网破裂，关闭P1处阀门或者检修，泵站A水泵停止运行时，导致阀后减压阀后管段处水压很低甚至是空管。恢复正常供水时，减压阀前管段处阀门突然打开或泵站A水泵开启时，减压阀前管段处压力迅速增大，可调式减压阀前管段与后管段间在短时间内存在较大的压差，减压阀来不及工作，减压阀上腔压力很小，就在这种较大的压力驱动下，减压阀被强行打开，导致减压阀前后压力趋于平衡，减压阀短时失效，即串压。 　　既然已经出现了，又当如何解决呢？以下总结了三种： 　　1、基于减压阀的工作原理，在减压阀后装设一泄压阀，当减压阀后的压力高于P2时，就打开泄压阀泄压，保护甲村的正常供水压力。 　　2、通过其它方法缩短串压的时间，使之接近于0。 　　3、根据可调式减压阀的工作原理，适当增大导阀及导管的口径，降低上下腔达到压力平衡的时间，甚至于趋向于0的时间差。 　　通过实践验证，上面所述的第二种方案是最经济实惠、实用性最大的，可以通过泄水阀,迅速打开，使膜片上腔压力大于下腔压力，促使可调式减压阀迅速恢复正常。串压时间基本为0。

“Adjustable pressure reducing valve series solution to the problem”是由中国减压阀网提供的阀门行业新闻，译文仅供参考。另外，中国减压阀网还提供相关产 品搜索： 氢气减压阀、 氮气减压阀、 氧气减压阀、 空气减压阀、 更多减压阀产品 等。

译文：
Adjustable pressure reducing valve series solution to the problem Adjustable pressure reducing valve of the string problem, not a common phenomenon, it is also possible failure problems, as users, we still need a good look, and to master their ability to cause analysis and solution: In the process of using adjustable pressure reducing valve Why is there a string problem? As the valve at the pipe after the pipe burst, turn off the valve at the P1 or repair, pump A pump stops running, the result after the pressure reducing valve at the pressure after the pipe is very low or even empty tube. Normal supply, the valve at the valve before the pipe burst open or pump A pump is turned on, the pressure reducing valve at the front tube section increases rapidly, adjustable pressure reducing valve before the pipe between the pipe and in a short time after the existence of higher pressure, valve time to work on the valve chamber pressure is very small, the pressure in the larger drives, the valve is forced open, causing the pressure relief valve before and after leveling, reduced pressure valve short-term failure, that string pressure. Since there have been, then how to solve it? The following summarizes the three ways: 1, based on the valve works, the installation of a pressure relief valve after the valve when the valve after the pressure is higher than P2, you open the pressure relief valve pressure relief to protect a village of the normal water pressure. 2, other ways to shorten the string by the time pressure, so close to 0. 3, according to the adjustable pressure reducing valve works, and increase the caliber of the pilot valve and the catheter, reducing the upper and lower chamber pressure reached equilibrium time, and even tends to zero time difference. Through in practice, the second option described above is the most economical, practical maximum, you can vent valve, open quickly, so that the diaphragm chamber pressure is greater than the lower chamber pressure to quickly restore adjustable pressure reducing valve to normal. String pressure to basically zero.

更多新闻：

• 底阀用途及性能
• 管力阀概述
• 应用减压阀延长凝结水泵的寿命

原文来源：http://www.1jianyafa.com/

2012-01-18 08:56

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