A detachable and replaceable sealing device for relay room and its working method

Abstract

The invention discloses a detachable and replaceable sealing device for a relay room, comprising an outer pipe body and an inner pipe body, the outer pipe body is provided with an inner pipe body, and one end of the inner pipe body close to the outer pipe body is connected with a fixed plate, the fixing plate is provided with a sealing mechanism, the sealing mechanism includes a top ring, a seal, a fastening bolt and a circular socket, the top ring is arranged on one side of the fixing plate, and the top ring is provided with A plurality of through holes of equal arc, the fixing plate is provided with a plurality of screw holes of equal arc, the through holes correspond to the screw holes one by one, and the top ring is provided with fastening bolts. In the present invention, the top ring can be removed by unscrewing the fastening bolts from the fixing plate, and then the sealing member between the circular clamping seat and the inner pipe body can be removed. Continuing to use after replacing the seal greatly prolongs the service life of the relay, reduces waste of resources, and solves the technical problem that the seal between the relays cannot be replaced in the prior art.

Description

technical field [0001] The invention relates to the technical field of pipe jacking construction, in particular to a detachable and replaceable sealing device used in a relay room and a working method thereof. Background technique [0002] During the long-distance pipe jacking construction, due to the problems of many pipe joints and uneven force transmission, it is difficult to accurately control the direction, and the power to overcome the friction resistance is large; disadvantages such as low efficiency. In order to overcome the above problems, it is necessary to set up a relay room at a reasonable position in the middle of the pipe section to advance in sections, so as to avoid the difficulty of jacking when the construction distance of the pipe jacking is too long. The closed annular chamber is composed of a front casing, a jack and a rear casing. The front casing is connected with the front nozzle, the rear casing is connected with the rear nozzle, and the front and...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a detachable sealing device and its working method for the relay room to solve the following technical problems: (1) By welding the fixing plate to the end of the inner pipe body, the top The ring is fixed on the fixed plate, and the circular clamp at the end of the top ring effectively fixes the seal between the circular clamp and the inner tube body. The spring in the circular clamp is subject to different high-pressure friction according to the seal. Force to adjust the corresponding compression amount, reduce the degree of deformation of the seal, unscrew the fastening bolt from the fixed plate, the top ring can be removed, and then the seal between the circular clamp and the inner tube body After dismantling, the relay room using this sealing device can be replaced and used continuously, and the irreparable seal of the relay room can be converted into a repairable one, which greatly prolongs the service life of the relay room, reduces the waste of resources, and solves the problem of The technical problem that the seal between relays in the prior art cannot be replaced; (2) Weld the mounting plate on the inner pipe body, insert the jack into the storage hole on the mounting plate, and the storage hole effectively fixes the jack on the mounting plate , The storage hole is a fully enclosed structure, which strengthens the stability of the jack and prevents the jack from being unable to work due to the loose position of the jack and the abnormal drop during construction.

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