Explosion-proof electronically-controlled closed pump and method for maintaining high utilization rate of engine power constantly thereby

The invention belongs to the technical field of closed pumps, particularly relates to an explosion-proof electronically-controlled closed pump and a control method for maintaining high utilization rate of engine power constantly thereby and solves the problem that the use of the existing closed pumps causes low utilization rate of engine power. The explosion-proof electronically-controlled closed pump comprises a pump block, an electric proportional relief valve and an electrical control system. A transition block in a plate structure is mounted on the pump block. The pump block comprises a bidirectional plunger variable pump, an oil supply pump, a servo cylinder and a multifunctional valve. According to the control method, the explosion-proof electric proportional relief valve, a terminal actuator of the electrical control system for explosion control is connected with the pump block through the transition block, and electrical control of the pump is achieved. The precision electrohydraulic control technique