PE electric smelting sleeve protection device and installation method

Abstract

The invention relates to a PE electric smelting sleeve protection device and an installation method, and belongs to the technical field of fuel gas conveying. The PE electric smelting sleeve protection device is used for protecting a PE electric smelting sleeve from distortion and deformation due to the influence of external force and ensuring safe fuel gas conveying. The PE electric smelting sleeve protection device comprises at least two sets of detachable protection device assemblies, and the protection device assemblies are of annular cylindrical structures and fixedly arranged on PE pipelines at the two ends of a PE electric smelting sleeve in a sleeving mode through metal screws and fixing bolts. According to the PE electric smelting sleeve protection device, under the conditions of sedimentation and external digging force, especially in foundation soft environments such as pit filling and water filling, the external force borne by the PE electric smelting sleeve protection device can be dispersed to PE pipelines at the two ends of the PE electric smelting sleeve, the PE electric smelting sleeve is effectively protected to be in the state that the PE electric smelting sleeve is not subjected to external stress or is subjected to less external stress, the bonding strength of the welding position of the PE electric smelting sleeve and the PE pipelines is guaranteed, the air leakage problems of distortion, deformation and the like caused by sedimentation and external force of the PE electric smelting sleeve are solved, and the PE pipelines are protected.

Description

technical field [0001] The invention belongs to the technical field of gas transportation, and in particular relates to a PE electrofusion sleeve protection device and an installation method. Background technique [0002] Compared with traditional metal pipes, PE pipes are widely used in urban gas pipeline networks because of their corrosion resistance, maintenance-free, convenient construction, and good air tightness. However, PE pipes also have certain deficiencies during use, especially after being subjected to external pressure during construction, they are easily damaged and have poor ductility. [0003] In the prior art, PE pipes are usually protected by PE electric fusion sleeves. The working principle of PE electric fusion sleeves is to heat the resistance wires inside the PE electric fusion sleeves to melt the PE pipes connected at both ends of the sleeves. The end PE pipes are butt welded together. Specifically, the resistance wire is pre-embedded in the pipe wall...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the prior art, the present invention provides a PE electrofusion sleeve protection device and installation method, which not only solves the problem of distortion, deformation, and air leakage of the PE electrofusion sleeve due to settlement and external force. It also reduces the difficulty and cost of early construction and later repair and maintenance, which is of great significance to the safe operation of urban gas pipeline networks

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