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燃气安全阀如何进行开启压力的调整?

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燃气安全阀如何进行开启压力的调整?

发布日期:2018-03-10 00:00 来源:http://baobie123.com 点击:

燃气安全阀如何进行开启压力的调整?燃气安全阀在系统中起安全保护作用。当系统压力超过规定值时,燃气安全阀汀开,将系统中的一部分气体排入大气,使系统压力不超过允许值,从而保障系统不因压力过高而发生事故。燃气安全阀又称溢流阀。图示为安全阀的几种典型结构形式。图a为活塞式安全阀,阀芯是一平板。气源压力作用在活塞A上,当压力超过由弹簧力确定的安全值时,活塞A被顶开,一部分压缩空气即从阀口排入大气;当气源压力低于安全值时,弹簧驱动活塞下移,关闭阀口, 此阀密封面要干净。




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