Pipeline port hot-melt connection structure

Abstract

The invention discloses a pipeline port hot-melt connection structure, and relates to the technical field of pipeline connection, The pipeline port hot-melt connection structure comprises a pipe, a pipe fitting and a fastening cover, wherein a pipe fitting bellmouth is fixedly installed on the pipe fitting and is of a tubular structure; the pipe is inserted in the pipe fitting bellmouth; an annular groove is formed in the pipe fitting bellmouth at the joint of the pipe and the pipe fitting; a connecting component is installed in the annular groove; the pipe, the pipe fitting bellmouth and the pipe fitting are in rigid connection after being connected in a hot melting mode through the connecting component, and the strength and the sealing pressure bearing capacity of the connecting position are not smaller than the strength and the sealing pressure bearing capacity of the pipe and the pipe fitting, so that the sealing performance and the bearing capacity between the pipe and the pipe are greatly improved; a hot-melt connected pipeline system belongs to the same material and has the same service life, so that the service life of the pipeline connection is prolonged; and the the pipe, the pipe fitting bellmouth and the pipe fitting are rigidly combined together after hot-melt connection, so that the axial displacement of the pipe and the pipe fitting caused by temperature influence or other external forces is prevented.

Description

technical field [0001] The invention relates to the technical field of pipeline connection, in particular to a pipeline port hot-melt connection structure. Background technique [0002] Pipeline connection refers to connecting the prefabricated pipe sections into a complete system according to the requirements of the design drawing. In construction, different connection methods should be selected according to the material of the pipe used. Common steel pipes have threaded connection, flange connection, welding connection, socket connection, and pipe bonding connection. In the patent of invention, a kind of two pipes passing through the flange is designed, and the multi-section cylinder liner connection can adapt to the uneven settlement of the soil layer, the movement change of the earth's crust, the horizontal and vertical displacement caused by factors such as earthquakes, so that the pipe is more flexible. ;Multi-segment cylinder liners make the connection of two pipes m...

AI Technical Summary

Problems solved by technology

In construction, different connection methods should be selected according to the material of the pipe used. Common steel pipes have threaded connection, flange connection, welding connection, socket connection, and pipe bonding connection. In the patent of invention, a kind of two pipes passing through the flange is designed, and the multi-section cylinder liner connection can adapt to the uneven settlement of the soil layer, the movement change of the earth's crust, the horizontal and vertical displacement caused by factors such as earthquakes, so that the pipe is more flexible. ;Multi-segment cylinder liners make the connection of two pipes more convenient. However, the existing pipe connection method increases the diameter of the pipe by adding flanges to the outside. For the connection of pipes in some special positions, the pipes cannot be pre-embedded or Connection, and the existing pipeline connection is a flexible connection, and the pressure bearing capacity of the flexible connection seal is affected by the material of the seal, its mechanical properties and the uniformity of compression in the circumferential direction of the seal after being subjected to external force loads. Seals and pipe fittings are made of different materials. Considering the problem of synchronous practical life, the flexible connection will have the problem of axial displacement. The existing rigid connection of some pipeline connections also has a sealing adhesive connection method, but as time goes by, the adhesive connection will be disconnected first, resulting in water leakage in the system. Affect the use, the existing part of the pipe connection adopts the hot melt machine, the hot melt machine separately heats the pipe and the pipe fittings and then inserts them together, which is not convenient for on-site construction, and the existing hot melt machine pipe butt joint equipment structure is cumbersome, and the production cost is relatively high High, thereby reducing the work efficiency of pipeline connection

There is also a utility model patent named a kind of electromagnetic induction heating and welding double hot-melt pipe fittings, application number 201320613261.1, and an invention patent application named electromagnetic induction heating type steel-plastic conforming to the full welding structure of pipelines, application number 201210276980.9, in which heating and welding The resistance wire of double hot-melt pipe fittings is pre-embedded in the main body of the pipe fittings, the processing technology is complicated, the process flow is many, the manufacturing cost is high, and the leakage defect of the comprehensive welding cannot be guaranteed.

The electromagnetic induction heating type steel-plastic conforms to the fully welded structure of the pipeline. It is required to preset the steel-plastic pipe in the pipe, and place the electromagnetic induction ring on the main body of the pipe fitting. The manufacturing cost is high and the process is complicated.

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