Helium pressing device for fine leak detection of laser

The utility model provides a laser fine leak detection helium pressing device which comprises a pressure tank, a vacuum pressure gauge, a safety valve, an air inlet valve, an air outlet valve and a multi-layer material shelf. The pressure tank comprises a tank body and a barrel cover, the barrel cover is fixed to the upper portion of the tank body through a tightening screw, and the middle of the barrel cover is sealed through a sealing ring. A plurality of detected lasers are placed on the multi-layer material rack and are placed in the tank body together with the multi-layer material rack; the vacuum manometer is fixed on the upper surface of the barrel cover; the air inlet valve and the air outlet valve are installed on an air inlet pipeline and an air outlet pipeline of the pressure tank respectively, and the safety valve is installed on a connecting pipeline of the air inlet valve and the pressure tank. The laser leak detection device is used for precise leak detection of a laser, operation is simple due