Automatic control device for preventing overlimit of gas pressure

The invention provides an automatic control device for preventing overlimit of gas pressure, belongs to the technical field of automatic control and aims to provide the automatic control device whichis simple to operate and can adjust the releasing pressure value on site. The technical scheme of the invention is as follows: the automatic control device for preventing overlimit of gas pressure comprises a pressure transmitter, an electromagnetic valve, a relay, a first nixie tube, a first controller, a current to voltage module, an alarm, a power supply module, a first potentiometer, a secondpotentiometer, a second nixie tube, and a second controller, wherein the pressure transmitter is arranged on a pressure container for measuring the gas pressure in the pressure container, and the electromagnetic valve is connected to the exhaust port of the pressure container through a pipeline. The automatic control device provided by the invention can be widely applied to the field of oil and gas exploitation. 本发明种防止气体压力