Leak hole calibrator with bottle body positioning and fixing structure

The utility model discloses a leak hole calibrator with a bottle body positioning and fixing structure, which comprises a leak hole calibrator, a connecting port is arranged on the front side of the leak hole calibrator, a connecting pipe is arranged at the front end of the connecting port through threads, an adjusting valve is arranged at the front end of the connecting pipe, a butt joint port is arranged at the front end of the adjusting valve, and the butt joint port is connected with the connecting pipe through threads. And a mounting opening is formed in the front end of the butt joint opening in a threaded mode, a gas conveying pipe is mounted at one end of the mounting opening, and a mounting plate is mounted on the front face of the leak hole calibrator and located on one side of the connecting opening. The adjusting valve is installed, the connecting pipe is in butt joint with the connecting port through threads, the connecting tightness of the device is guaranteed, gas transmission of the device is