Sliding-in self-anchorage type socket connection pipe

Abstract

The invention discloses a sliding-in self-anchorage type socket connection pipe which comprises an equal-diameter pipe and a bellmouth. One end of the equal-diameter pipe is a spigot, the other end ofthe equal-diameter pipe is a connection end, one end of the bellmouth is a necking-down small end, the other end of the bellmouth is a large end, and the small end of the bellmouth is fixedly connected with the connection end of the equal-diameter pipe. The sliding-in self-anchorage type socket connection pipe is characterized by further comprising an anchorage flange with a lifting anchorage function and a guiding anchorage ring plate with a guiding anchorage function, wherein the anchorage flange is in sleeved connection with the spigot end of the equal-diameter pipe in a fixedly-connectedmode, the guiding anchorage ring plate is arranged at the large end of the bellmouth, the end face on one side of the guiding anchorage ring plate is fixedly connected with the large end of the bellmouth, the inner circumferential surface, located in the large end of the bellmouth, of the guiding anchorage ring plate is a guiding face, and the portion, located on the outer side of the large end ofthe bellmouth, of the guiding anchorage ring plate is an anchorage plate. The sliding-in self-anchorage type socket connection pipe has the advantages of being simple in structure, high in sealing reliability, fast to install, convenient to maintain and disassemble, long in service life and the like.

Description

technical field [0001] The invention relates to the field of pipelines, and relates to a sliding self-anchoring socket connecting pipe, which is used for socket connecting pipes of welded steel pipes or steel-plastic composite pipes for socket connection with spiral welded steel pipes as base pipes. Background technique [0002] The socket connection is a convenient, fast, safe and efficient pipe connection method in pipeline installation. The socket connection in the prior art is not only used on cast iron pipes and reinforced concrete pipes, but also on welded steel pipes, especially in spiral welding The equal-diameter steel pipe is used as the base pipe on the steel-plastic composite pipe. One end of the socket connecting pipe is a socket, and the other end is a socket. The socket of the adjacent front socket connecting pipe is inserted into the socket of the rear socket connecting pipe, and a sealing ring is arranged between them, so that the socket connecting pipes are...

AI Technical Summary

Problems solved by technology

[0004] 1 Due to the large diameter, long size and high sealing strength, the force required for installation is relatively large, and it is very difficult to grasp the gap between the socket and the socket. Often due to thermal expansion and contraction, it is easy to make adjacent pipes push Dead, the pipe after the top is dead will bulge, and there is a safety hazard;

[0005] 2. Socket connection steel pipes or socket connection steel-plastic composite pipes usually use thermal compensation to avoid potential safety hazards such as thermal expansion due to heating of materials in the heating pipe network, and bulging of steel pipes after jacking up. The expansion and contraction of the pipeline is compensated by the controller, but it increases the material cost and installation workload of the pipeline, prolongs the installation time, and eventually leads to an increase in the pipeline cost of the heating pipeline network;

[0006] 3 After installation, it is difficult to adjust the coaxiality between the front socket connecting pipe and the rear socket connecting pipe, resulting in uneven gap between the socket of the front socket connecting pipe and the socket of the rear socket connecting pipe; the result is: the front socket The non-coaxiality of the connecting pipe and the rear socket connecting pipe increases the resistance to the flow of the transmission medium in the pipeline, and the pressure on the pipe wall also increases. The gap between the socket of the front socket connecting pipe and the socket of the rear socket connecting pipe The gap is uneven and the pressure on the pipe wall increases, so that the local seal ring bears too much load, which is not only prone to eccentric displacement, but also easy to bear excessive load and cause failure, which reduces the service life of the seal ring and increases the workload and cost of pipeline maintenance. The ellipticity of the straight socket and socket of the spiral welded pipe is relatively large, which not only increases the difficulty in the process of pipe installation, but also damages the sealing ring due to the lack of guidance at the pipe end, and also because of the ellipse of the pipe mouth after installation, The gap between the pipe socket and the pipe fittings is not uniform, so that the local seal ring bears too much load, which reduces the sealing effect

[0007] 4. Since there is no axial restriction for socket connection steel pipe or socket connection steel-plastic composite pipe, under the influence of pressure, vibration, impact and other factors, the connection part of the socket is easy to crack and cause leakage, or even pull out. The connection part is easy to crack and cause leakage or even pull out. In the design of direct buried pipeline installation, it is necessary to set up fixing devices, which not only increases the workload of design, manufacture and installation, but also increases the cost and prolongs the installation time

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