Steel thin wall penetration pipe and its fitting parts

Abstract

The invention discloses a steel thin-wall wire-passing tube and the fittings thereof, which has the advantages of good sealing performance, convenient construction, low production cost, high performance price ratio, security and reliability. The wire-passing tube utilizes stainless steel thin-wall tube, the front port is tightly jacketed with a first embedded connecting soft plastic protecting jacket, a stainless steel thin-wall flexible joint is tightly jacketed into the first embedded connecting soft plastic protecting jacket and the wire-passing front port, and the screw outside the stainless steel thin-wall flexible joint is tightly jacketed with a second embedded connecting soft plastic protecting jacket. The invention can be widely applied to wire-passing tube for power cable of electrical equipment and illuminating cable for industry and citizen etc., arranged by light wire as well as by wall-buried or ground-buried wire.

Description

technical field [0001] The invention relates to a cable threading pipe, in particular to a steel thin-wall threading pipe and its accessories. Background technique [0002] The existing cable threading pipe generally adopts galvanized iron pipe and its accessories galvanized iron union, straight head, elbow and hard plastic sleeve. The live joint, straight head, and elbow are fastened on the threading pipe, and the outer end of the live joint is provided with external threads, which are matched with connecting parts such as the junction box of the power distribution control box of the terminal electrical equipment. When threading, a hard plastic sleeve is inserted at the outer end of the galvanized iron threading pipe for threading operation. Since iron pipes are easy to rust, it is necessary to galvanize the surface and increase the wall thickness of the pipe (1.2-2.5mm) to prolong its anti-oxidation period, resulting in heavy pipes, high production costs, inconvenient con...

AI Technical Summary

Problems solved by technology

Since iron pipes are easy to rust, it is necessary to galvanize the surface and increase the wall thickness of the pipe (1.2-2.5mm) to prolong its anti-oxidation period, resulting in heavy pipes, high production costs, inconvenient construction, and limited anti-oxidation period; When passing through the cable, only a hard plastic sleeve temporarily isolates the thicker joint and the threading of the line pipe nozzle, one-way operation, the hard plastic sleeve cannot be fixed, only one-way operation, not two-way operation, and the threading is completed The rear hard plastic sleeve is easy to shift or even get lost. In this way, the burrs at the pipe mouth or joint port may cause varying degrees of damage to the insulation layer of the cable inside the pipe during construction or later use, reducing safety and reliability. sex

The cable threading tube with the above structure has poor sealing performance, and the connection is not waterproof. If there are abnormal factors such as a short circuit between the cables in the tube, an open flame will be emitted, and it is difficult to control, and there is a potential safety hazard.

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