Socket pipe connector

Abstract

The invention relates to a splicing piece of a socket pipe, which comprises a pipe body and a splicing section connected with the pipe body. The splicing piece of the socket pipe also comprises an accumulation fusing section, a retractable compensating section and measurement identifications, wherein the accumulation fusing section is connected with the splicing section; the inner diameter of theaccumulation fusing section gradually increases from a connecting position of the splicing section to the retractable compensating section, and is used for fusing a splicing accumulation body in a space formed between the accumulation fusing section, a plastic lined pipeline in a metal plastic-lined pipeline to be connected and an end wall of an outer lining metal pipeline; the retractable compensating section is connected with the accumulation fusing section and the inner diameter of the retractable compensating section is larger than that of the splicing section; and the measurement identifications are arranged on outer surfaces of the splicing section and the accumulation fusing section. The splicing piece of the socket pipe utilizes the splicing accumulation body to carry out secondarysealing on the outer surfaces of the accumulation fusing section and the plastic lined pipeline so as to improve fusion strength and fusion sealing property of the connecting position, and makes an expansion stretched section generated when medium temperature of the pipeline has large variation arranged in the retractable compensating section so as to improve the whole rigidity of the metal plastic-lined pipeline.

Description

technical field [0001] The invention relates to a pipe connector for water supply, gas supply, chemical industry, heat power and other systems, in particular to a socket pipe joint for plastic pipes or metal-lined plastic pipes. Background technique [0002] At present, the connection of water supply and heating piping systems mainly adopts the socket connection mode of plastic pipes or metal-lined plastic pipes. The socket connection includes hot-melt socket connection and capacitor socket connection. Generally, the outer wall of the plastic pipe made of thermoplastic material (such as polyethylene, heat-resistant polyethylene, polypropylene, polybutene, etc.) A socket welding connection method is performed after the inner wall of the connector is melted on the surface using special tools. When the pipe and the pipe joint are connected by socket hot-melt or capacitance, they are extruded radially along the pipe to form a fusion surface pressure along the radial direction o...

AI Technical Summary

Problems solved by technology

As a result, the rigidity and compressive strength of the metal-lined plastic composite piping system are also reduced to the level of the plastic-lined piping system. The advantages of the overall structural rigidity and compressive strength of the metal piping system will no longer exist, and it will become a metal-plastic-lined piping system. sexual defect

[0007] 3. When connecting plastic pipes or metal-lined plastic pipes, the welding depth basically depends on the staff using the measuring ruler to mark the welding depth on the outer surface of the pipe in advance in accordance with the provisions of the national standard. The connector itself does not have the function of measurement, so the existing pipe connectors have disadvantages such as complicated socketing process, low construction efficiency, and large operation error.

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