Device and method for driving generator to generate electricity through gas pressure energy

The invention provides a device and method for driving a generator to generate electricity through gas pressure energy, and the device comprises a pneumatic unit which is formed by a pneumatic reversing valve, a stroke valve I, a stroke valve II and a hand-operated reversing valve, and is connected with a high-pressure gas source; a high-pressure gas source drives a double-rod double-acting cylinder connected with a pneumatic unit to reciprocate, the double-rod double-acting cylinder is connected with a rack, the rack is meshed with a first gear, the first gear is connected with a gear motion converter, bidirectional rotation motion of the first gear is converted into continuous unidirectional rotation motion, and the gear motion converter is connected with a generator. Therefore, the high-pressure gas source drives the generator to generate power through the pneumatic unit, the double-rod double-acting cylinder and the gear motion converter. The natural gas pressure energy power generation device can be appl