气举调压撬

（一）、一般说明

   本设备的主要包括：切断、计量、调压方面，其主要流程为：天然气通过切断阀、进入本设备，通过每个阀组，球阀、计量、调节阀后流出本设备。

减压过程中，每级出口配置现场显示压力表，便于观察。

手动放散阀是进行排空，还可用于设备检修时，排空设备内的余气，防止出现安全事故。

（二）、主要零部件说明

(1) 调节阀（减压阀）

工作原理：入口压力被取气阀的压力反作用膜片上,指挥器动作,指挥阀口打开,负载压力加大,从而使主阀阀口打开, 使流量加大以满足要求.

▼易损件：无                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    

（2）切断阀

切断阀在进口。其作用为：当调压器后超压时，及时切断进口气源，设备不被损坏及设备安全。

（3）手动安全放散阀

  可人工开启手动放散阀门进行排空，还可用于设备检修时，排空设备内的余气，防止出现安全事故。