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原文：
  1） 安全阀调整不当，调整压力时忽略了实际工作介质特性和工作温度的影响，需重新调整。在热态状态下连续调整不能超过三次。否则，起座压力值误差较大，不能在正常的调试压力下动作。 2）密封面因介质污染或结晶产生粘连及生锈；需吹洗安全阀，严重时需研阀芯、阀座。 3）阀杆与衬套间的间隙过小，受热时膨胀卡住；需适当加大阀杆与衬套的间隙。 4）调整或维护不当，弹簧式安全阀的弹簧收缩过紧或紧度不够，杠杆式安全阀的生锈盘过重或过轻，需重新调整安全阀。 5）阀门通道被盲板等障碍物堵塞；应及时清除障碍物。 6） 弹簧产生永久变形，应更换弹簧。 7）安全阀选型不当，如在背压波动大的场合，选用了非平衡式安全阀等，需更换相应类型的安全阀。

“From the valve seat does not adjust the pressure action ”是由中国安全阀网提供的国际阀门新闻，译文仅供参考。另外，中国安全阀网还提供相关产品搜索： 全启式安全阀、 封闭式安全阀、 高压安全阀、 锅炉安全阀、 蒸汽安全阀、等。

译文：
From the valve seat does not adjust the pressure action 1) The safety valve adjusted properly, adjust the pressure by ignoring the actual working fluid properties and temperature effects, need to re-adjust. In the hot state of continuous adjustment of not more than three times. Otherwise, the value of error is greater pressure from the seat, can not be under pressure in the normal debugging action. 2) sealing surface contamination or due to the crystallization medium adhesion and rust generated; need to purge valve, serious research is required valve, the valve seat. 3) the gap between the stem and the bushing is too small, the heat expansion when stuck; be appropriate to increase the stem and bush clearance. 4) The adjustment or improper maintenance, spring-loaded safety valve springs too tight or tight shrink enough, lever-type safety valve rusted plate too heavy or too light, need to re-adjust the safety valve. 5) valve channel is blind and other obstacles blocking; timely removal of obstructions. 6) Spring permanent deformation, replace the spring. 7) safety valve selection of inappropriate, such as large fluctuations in back pressure of the occasion, the choice of a non-balanced safety valve, etc., need to replace the corresponding type of safety valve.

更多新闻：

• 设置安全阀的四大点
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• 一高层燃气闪爆

原文来源：http://www.1anquanfa.com/

2011-12-20 08:30

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