Polyolefin drainage pipe with FRD double seal for instant detection of closed water bell-and-socket joint

Abstract

The invention belongs to the technical field of drainage pipes, and specifically relates to a polyolefin drainage pipe with FRD double seal for instant detection of a closed water bell and socket joint. The polyolefin drainage pipe aims at the problem that in the prior art, a socket and a bellmouth may be contacted and sealed, and the contacted and sealed parts may lead to the interruption of theinternal connectivity of an annulus, and then the incomplete detection of the sealing inspection of the double-sealed bell and socket joint may exist. According to the technical scheme, the polyolefindrainage pipe comprises a pipeline, two ends of the pipeline are separately provided with the socket and the bellmouth through an integral forming mode, an annular pressure test groove is arranged onthe outer wall of the socket, and annular sealing ring installation grooves are arranged on both sides of the pressure test groove; and a pressure test hole is formed in the bellmouth, the distance between the pressure test hole and a bellmouth opening is equal to the distance between the middle of the pressure test groove and a socket opening, and in addition, a baffle can be arranged in the pressure test groove. The polyolefin drainage pipe with the FRD double seal for instant detection of the closed water bell and socket joint is applicable to the connection of the drainage pipeline.

Description

technical field [0001] The invention belongs to the technical field of drainage pipes, and in particular relates to a polyolefin drainage pipe with FRD double-seal instant detection closed-water socket joints. Background technique [0002] The drainage pipe is connected and installed by the drainage pipes processed separately in multiple sections, and the connection structure between the water pipes is required to maintain a good sealing performance for a long time. In the prior art, the connection between water pipes often adopts socket joints. The connection method of socket joints is to insert the socket at one end of the pipe or fitting into the socket of the fitting to be connected, and fill the ring gap with sealing material. The advantage is that it is easy to install. [0003] There are many forms of sealing for socket joints, among which double sealing is a very effective sealing form. Moreover, by setting a pressure test hole at the position between the two seali...

AI Technical Summary

Problems solved by technology

[0006] In the prior art, there is usually no good way to remedy the leaking pipeline caused by the damage of the seal of the socket joint, and the drainpipe can only be replaced as a whole; since the drainpipe is usually installed underground, once the drainpipe needs to be replaced, it needs to stop Water delivery and excavation of the ground are time-consuming and labor-intensive, which will seriously affect the normal operation of the pipeline

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