Airtight corner cylinder with gas detection function

The utility model discloses an airtight corner cylinder with an air detection function, which belongs to the technical field of pneumatic elements and comprises a main body, and a piston used for rotating and moving is slidably connected in a cavity of the main body. The lower end of the main body is fixedly connected with a base for sealing the cavity of the main body; the main body is provided with a gas detection assembly used for gas inlet and gas outlet. The gas detection assembly comprises a loosening gas detection control assembly, a clamping gas detection control assembly and an exhaust assembly, gas detection connector assemblies used for gas detection are installed in two installation grooves in the middle of the front side of the upper end of the main body, and the two gas detection connector assemblies are arranged in the vertical direction. By means of the mode, whether the corner cylinder clamps or releases the workpiece or not can be judged according to the air pressure in the loosening air det