Vacuum sealing structure of universal penetrating pipe

Abstract

The invention discloses a vacuum sealing structure of a universal penetrating pipe. The vacuum sealing structure comprises a tubular penetrating pipe and a penetrating pipe bottom pipe surrounding theouter surface of the tubular penetrating pipe. The penetrating pipe bottom pipe is provided with a thick end and a thin end, and the thick end face is compacted with a sealing flange through screws.The vacuum sealing structure further comprises a first sealing groove, a first sealing ring, a second sealing groove and a second sealing ring. The inner diameter of the pipe penetrating bottom pipe is large enough, inner cores with different hole diameters can be inserted between the pipe penetrating bottom pipe and the penetrating pipe in a loose fit mode, and the inner cores with the differenthole diameters are matched with the penetrating pipes with the different pipe diameters to meet the requirement for changing the pipe penetrating diameter under the condition of without replacing thepipe penetrating bottom pipe. By arranging the gaps among the penetrating pipe, the inner cores and the penetrating pipe bottom pipe, the requirements for convenient installation and disassembly and guarantee of sealing vacuum can be met, and the problems that the installation time is too long and other devices installed on a female part need to be disassembled and assembled due to the fact that the female part is replaced or repaired through a traditional method are solved.

Description

technical field [0001] The invention belongs to the technical field of vacuum sealing, and in particular relates to a vacuum sealing structure for general pipe penetration. Background technique [0002] In vacuum equipment, it is often encountered that the pipeline is led out from the vacuum. According to different pipe diameters, it is necessary to reserve corresponding nozzles with different inner diameters. When the diameter of the pipe that needs to be led out changes, there are usually two Method: When time permits, remove the parent part from the equipment, cut off the pipe that needs to be replaced on the parent part, and replace it with a new pipe, because re-welding is required after cutting, and leakage will inevitably occur during the welding process. Therefore, after welding, it is necessary to re-check the leak of the parent part, and equip corresponding leak-checking tooling and personnel equipment; in most cases, it is not allowed to repair and leak-check for ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention proposes a vacuum-tight structure for universal pipe penetration, aiming to solve the problems of long replacement time, extra workload, time and economic cost when the diameter of the pipe passage changes.

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