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现有安全阀存在下列问题: (1)安全阀失灵、不排气降压。 (2)安全阀在压力下降到额定压力以下时不能关闭或压力下降得幅度很大时才关闭,(即“回座难”)。 (3)安全阀安装在锅炉、压力容器的顶部,手动排一次气上下很不方便,因此操作人员经常不上去操作手动,这样给安全阀失灵造成了一个条件。为此我们在保证安全阀原有基本功能不受影响的前提下,对手动排气功能采用电气化自动控制装置,以
The existing safety valve has the following problems: (1) safety valve failure, not exhaust pressure. (2) The safety valve can not be closed when the pressure drops below the rated pressure or when the pressure drops by a large margin (that is, it is difficult to get back to the seat). (3) Safety valve installed in the top of the boiler, pressure vessel, manual gas up and down a very inconvenient, so the operator often do not go up and operate manually, so that the safety valve failure caused a condition. To this end, we guarantee the original basic functions of the safety valve is not affected under the premise of the manual exhaust function of the use of electrification of automatic control device to