Safety control system for pneumatic well heads
A technology of safety control and control panel, which is applied in wellbore/well components, valve devices of wellbore/well, earth-moving drilling, etc. It can solve the problems of low degree of automation, single function, environmental pollution, etc., and improve environmental protection. , The effect of realizing automation and solving explosion-proof problems
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[0035] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:
[0036] See attached figure 1 , a pneumatic wellhead safety control system, including a control panel 1, a high-pressure pilot valve 18, a low-pressure pilot valve 19, a fusible plug 17 and a pneumatic shut-off valve 25; wherein:
[0037] The control panel 1 includes a straight-through ball valve 3, the inlet of the straight-through ball valve 3 is connected to the outlet of the air source interface 2, and the outlet of the straight-through ball valve 3 is connected to the inlet of the relay valve 4; the outlet of the relay valve 4 is connected to The inlet of the unloading valve 5 is divided into two routes, one is connected to the inlet of the SSV interface 7, a pressure gauge I6 is set between the SSV interface 7 and the unloading valve 5, and the other is connected to the pressure regulating valve 8, the needle valve 9, The inlet of the high-pressure pilo...
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