Gas compressor novel stability extension structure based on intermediate case flow guide

The invention provides a gas compressor novel stability extension structure based on intermediate case flow guide, and belongs to the field of aero-engine accessories. The structure is characterized in that the middle front part of the upper end surface of an S bend of an intermediate casing close to one side of a low-pressure gas compressor is connected with the front edge position of a blade tip of a high-pressure gas compressor rotor through a circumferential passage, meanwhile, a guide blade structure is arranged in the passage to control internal flow of the passage, and the mounting angle of a guide blade is kept consistent with the mounting angle of the front edge of the blade tip of the high-pressure compressor rotor; and the structure has the effect of remarkably improving the working margin of an aero-engine compression part, meanwhile, the total pressure loss of the upper end face of the S bend of the intermediate case can be effectively weakened, and in addition, the structure has certain simplici