Gas chamber and system and method for measuring horizontal gap between piston and side plate

The invention relates to a gas chamber and a system and method for measuring a horizontal gap between a piston and a side plate and belongs to the technical field of gas storage engineering. The system comprises a horizontal distance measuring device and a piston inclination measuring device that are connected to the control center of a gas chamber. The horizontal distance measuring device includes a plurality of horizontal distance measuring units uniformly distributed on the semi-circumference of a piston; the horizontal distance measuring device is used for measuring the horizontal distancebetween the piston and the side plate of a cylinder body and sending the data of the horizontal distance to the control center of the gas chamber; the piston inclination measuring device measures theinclination of the piston relative to the horizontal plane and sends inclination data to the control center of the gas chamber, the control center judges the influence of the inclination on the horizontal distance, the horizo