A high-pressure sealing method for pipe joints

Abstract

The invention discloses a pipe connector high-pressure sealing method. The method comprises the following steps that a sealing device is installed or prepared; and the sealing device extends into a pipe connector (1), torque is exerted on a fastener (6) or a combination part, and sealing is achieved. The sealing device comprises an elastic part (3) and a connecting part which can exert axial forceon the elastic part (3) and make the elastic part (3) to deform in the radial direction. The connecting part comprises a connecting rod (2) and the fastener (6) connected with the connecting rod (2).According to the sealing device, the axial force is exerted on the elastic part, the elastic part and the inner wall of the pipe connector are closely attached, and sealing of the pipe connector is achieved. The sealing method is good in sealing performance, the adopted sealing device is simple in structure, convenient to operate, economical, reasonable and capable of being utilized repeatedly, the number of machining working procedures is small, and the sealing device is applied to the technical field of high-pressure sealing of various container pipe connectors.

Description

technical field [0001] The invention relates to a sealing method, in particular to a pipe joint sealing method. Background technique [0002] Industrial containers, especially pressure vessels, often involve the sealing technology of non-flange pipe joints on these pressure vessels. When the heat exchange tube is subjected to a pressure test, the end of the tube needs to be pressure-sealed. [0003] The conventional sealing technology means is to use welding technology to weld the sealing cover on the pipe nozzle, and then cut and remove the cover after the pressure test is qualified. High; 2. After cutting and removing the cap, it is necessary to perform procedures such as beveling on the nozzle, which is complicated to operate and high in cost; 3. The reuse rate is low and the economy is poor. [0004] Therefore, there is an urgent need to develop a sealing method for pipe joints that is simple in process, easy to operate, easy to disassemble, reusable, and economical an...

AI Technical Summary

Problems solved by technology

[0003] The conventional sealing technology means is to use welding technology to weld the sealing cover on the pipe nozzle, and then cut and remove the cover after the pressure test is qualified. High; 2. After cutting and removing the cap, it is necessary to perform procedures such as beveling on the nozzle, which is complicated to operate and high in cost; 3. Low reuse rate and poor economy

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