Direct buried cable joint insulation and waterproofing processing device and method

Abstract

The invention provides a direct buried cable joint insulation and waterproofing processing device, comprising: an elastic outer sleeve having a main pipe portion and end pipe portions; counter-pullingdevice frames, each composed of two half pipe clamping plates; and device frame tensioning clamps, each including a stay rope and two X-shaped plate clamps hinged in the middle, and each stay rope being hinged to connecting ends at one end of the X-shaped plate clamps. The two counter-pulling device frames are arranged on the elastic outer sleeve, and are connected with the two device frames tensioning clamps through four limiting screws. A direct buried cable joint insulation and waterproofing processing method is also proposed, which has the steps of first, positioning a cable joint in themiddle of the elastic outer sleeve, and loosening the stay ropes and slightly tightening clamping head bolts; second, initially tightening limiting nuts until the stay ropes are almost straight, and then initially tightening the clamping head bolts; third, injecting water expansion waterstop glue; fourth, after the limiting nuts are screwed to make the stay rope straight, screwing the clamping head bolts to press the elastic outer sleeve tightly; and fifth, wrapping with an iron sheet. The device and method in the invention have a good waterproof effect and stable and long-lasting insulation performance, and can effectively meet the insulation and waterproofing requirements of a direct buried cable.

Description

technical field [0001] The invention relates to the technical field of cable laying, in particular to an insulation and waterproof treatment device for directly buried cable joints and an insulation and waterproof treatment device method. Background technique [0002] When laying direct-buried cables, since the cables are always charged, the intermediate joints connecting the two cables usually need to be insulated and waterproofed. The existing method is to crimp the two buried cables through the intermediate joints. Wrapped with epoxy resin, this treatment method has limited insulation and waterproof effects, and needs to be equipped with high-quality intermediate joints, and it is necessary to ensure that the soil where the cables are buried is dry and not easy to seepage, so as to avoid the degradation of the performance of the cable edge due to poor waterproofing. Breakdown occurs, but this method has high requirements for the laying environment and related accessories,...

AI Technical Summary

Problems solved by technology

[0002] When laying direct-buried cables, since the cables are always charged, the intermediate joints connecting the two cables usually need to be insulated and waterproofed. The existing method is to crimp the two buried cables through the intermediate joints. Wrapped with epoxy resin, this treatment method has limited insulation and waterproof effects, and needs to be equipped with high-quality intermediate joints, and it is necessary to ensure that the soil where the cables are buried is dry and not easy to seepage, so as to avoid the degradation of the performance of the cable edge due to poor waterproofing. Breakdown occurs, but this method has high requirements for the laying environment and related accessories, and has the disadvantages of high laying cost and limited quality, so it is necessary to improve

Images