Spherical cylinder for constant torque compressors and gas engines

The invention relates to a spherical cylinder for constant torque compressors and gas engines, which comprises a cylinder body and a middle shaft; an inclined hole bearing pedestal, the middle shaft, a middle plate and middle vanes are arranged in the cylinder body; two middle vane mounting slots are arranged at the symmetrical parts of the mirror images of an upper end cover and a lower end cover; middle vane slot openings are arranged in the middle plate; middle vane sliding blocks are arranged in the middle vane slot openings; two sides of the middle vane sliding block are respectively provided with a bourdon tube; the bourdon tubes are connected with the middle vane sliding blocks; the middle vanes are tightly pressed by the middle vane sliding blocks; the same sides of the middle vanes of the upper end cover and the lower end cover, relative to the symmetrical parts of the central surfaces of the upper end cover and the lower end cover, are respectively provided with a linear brake valve; the other sides