Auxiliary device for detecting and protecting sealing performance of welding groove of vacuum cavity by utilizing helium mass characteristics

Abstract

The invention relates to the technical field of vacuum detection instruments, and discloses an auxiliary device for detecting and protecting the sealing performance of a welding groove of a vacuum cavity by utilizing helium mass characteristics. The auxiliary device for detecting and protecting the sealing performance of the welding groove of the vacuum cavity by utilizing the helium mass characteristics comprises a box body, the surface of the box body is fixedly connected with a magnetic plate, a rotating shaft is movably connected into the magnetic plate, a shell is fixedly connected to theside, away from the box body, of the magnetic plate, a filament is fixedly connected into the box body, a gas groove is fixedly connected to the right side of the filament, and a filtering mouth is fixedly connected to the surface of the gas groove. After a leak hole position is detected, welding equipment can be placed in a placement channel inside the shell; according to the size of the weldingequipment, a spring rod in clamping mechanism can be moved to enable the spring rod to be close to or away from the welding equipment under the restriction of guide wheels, and a welding head of thewelding equipment is protruded from the welding groove; and the welding groove is in the leaking hole position, and the welding equipment is not required to be moved during the installation of the welding equipment, so that the effect of repair by welding without repositioning is achieved.

Description

technical field [0001] The invention relates to the technical field of vacuum detection instruments, in particular to an auxiliary device for detecting and protecting the sealing performance of a welding port of a vacuum chamber by utilizing the properties of helium. Background technique [0002] Vacuum leak detection is the process of detecting the leaking part and its size of the vacuum system. Vacuum leak detectors are often used for detection. [0003] The wall of the vacuum system, container or device has defects such as holes, cracks or gaps in the material itself or welds and mechanical connections. The external atmosphere enters the system through these defects, causing the system, container or device to fail to achieve the expected vacuum. This phenomenon is called air leakage. The defects that cause air leakage are called leaks; especially in welding parts, there are often leaks. These leaks are often irregular in shape and the pores are small. Conventional testin...

AI Technical Summary

Problems solved by technology

The defects that cause air leakage are called leaks; especially in welding parts, there are often leaks. These leaks are often irregular in shape and the pores are small. Conventional testing equipment can no longer accurately detect leaks. In addition, the existing After the detection equipment detects the position of the leak hole, it needs to be repaired by welding equipment or other equipment, but the repair instrument needs to reposition the position of the leak hole, which is prone to repair dislocation. Therefore, a method that uses the characteristics of helium to detect and protect the vacuum Auxiliary equipment for cavity welding joint sealing came into being

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