Rapid cut-off explosion-resistant valve for gas drainage pipeline

The invention provides a quick cut-off explosion-proof valve for a gas drainage pipeline. The quick cut-off explosion-proof valve comprises a valve body, a top cover plate, a sealing valve plate, a main shaft, a high-pressure spring, a high-pressure gas cylinder, a quick opening mechanism and a self-locking mechanism, the valve body is connected with the top cover plate and serves as a guide sealing mechanism of the main shaft and the sealing valve plate. The self-locking mechanism is located in the center of the top of the top cover plate. The main shaft is connected with the sealing valve plate and penetrates through the high-pressure spring; the high-pressure gas cylinder and the quick-opening mechanism are of an integral structure and are fixed on the top cover plate; and a pressure gauge, a pressure feedback switch and an electronic trigger are mounted on the quick-opening mechanism. The anti-explosion valve is simple in structure, reasonable in design, short in valve cut-off action time, small in valve