Gas machine leak detecting system

The invention belongs to the technical field of gas machines, and discloses a gas machine gas leakage detecting system. The gas machine gas leakage detecting system comprises a gas pipeline. The gas pipeline comprises an inner tube and an outer tube, wherein the inner tube and the outer tube are coaxially arranged. An annular cavity is formed between the inner tube and the outer tube. Gas is selectively introduced into one end of the inner tube. The inner tube is communicated with the cylinder heads of a number of gas machines. The system further comprises a first detecting mechanism which comprises an air machine and a detecting member. The air machine is selectively communicated with one end of the inner tube. The detecting member is detachably connected with the cylinder heads and can extend into the annular cavity. The system further comprises a second detecting mechanism. One end of the second detecting mechanism is communicated with the annular cavity, and the other end is used to extract and discharge