Electrical hot melting waterproof cover and method for achieving waterproof sealing of cable waterproof cover

Abstract

The invention discloses an electrical hot melting waterproof cover which is suitable for a cable which takes a hot melting material as an outermost layer sheath pipe. The electrical hot melting waterproof cover comprises waterproof cover bodies located on the outer side of the cable sheath pipe and heating elements, and the heating elements comprise the heating element used for connecting the waterproof cover bodies with the sheath pipe into a whole through hot melting and the heating element used for connecting the two-half-type waterproof cover bodies together through hot melting. In an assembling state, the heating elements are inlaid into the cover body mouths or edges of the waterproof cover bodies, and after heating is performed, the waterproof cover bodies and the sheath pipe are connected into a whole through hot melting to form the electrical hot melting waterproof cover; the electrical hot melting waterproof cover comprises the two-half-type waterproof cover bodies, a whole integrated electrical hot melting waterproof cover body and a whole detachable electrical hot melting waterproof cover body according to the difference of the waterproof cover structures. In a using state, the electrical hot melting waterproof cover and the cable are connected together through hot melting welding, the condition that the sealing durability and reliability of an existing waterproof cover and a cable protecting cover are not enough can be improved, the waterproof problem of an embedded pipe at the beam end is permanently solved, the service life of the cable is prolonged, and the maintenance cost of the cable in the using process is lowered.

Description

technical field [0001] The invention relates to a waterproof sealing cover suitable for the lower end pre-buried pipe or the upper end pre-buried pipe of a stay cable or suspender and a method for realizing the waterproof sealing of the cable body waterproof cover. Background technique [0002] Now the waterproof cover on the cable body is made of metal products, also known as the general cap, the waterproof cover is sealed with the HDPE protective layer of the cable body, and even the seals of the two halves of the waterproof cover are sealed with sealing materials, which are generally used. The durability and weather resistance are insufficient, and its service life cannot match the service life of HDPE or waterproof cover. After failure, it often leads to water accumulation in the embedded pipe at the lower end, which becomes a chronic problem of the cable body waterproof system. From a technical point of view, the specific There are following deficiencies: [0003] 1. T...

AI Technical Summary

Problems solved by technology

[0002] Now the waterproof cover on the cable body is made of metal products, also known as the general cap, the waterproof cover is sealed with the HDPE protective layer of the cable body, and even the seals of the two halves of the waterproof cover are sealed with sealing materials, which are generally used. The durability and weather resistance are insufficient, and its service life cannot match the service life of HDPE or waterproof cover. After failure, it often leads to water accumulation in the embedded pipe at the lower end, which becomes a chronic problem of the cable body waterproof system. From a technical point of view, the specific There are following deficiencies:

[0003] 1. The seal between the waterproof cover and the cable body uses epoxy resin, polyurethane, etc. as polar materials, and there is no adhesion between PE and PE, so the filler does not play a sealing role. Due to long-term vibration and aging of the sealing material, the waterproof The seal between the cover and the cable body will fail;

[0004] 2. The metal products of the waterproof cover are easy to corrode in the external environment for a long time, which reduces the durability of the waterproof cover and also reduces the waterproofness;

[0005] 3. The construction controllability is poor, and a large number of waterproof materials are often designed in the design process, but the installation process is complicated, the quality inspection means are lacking, and the construction quality is difficult to guarantee;

[0006] 4. The maintenance cost is high in the later stage, and the maintenance timeliness of the sealing part is very short due to the problem of sealing quality

Due to insufficient sealing, the waterproof and anti-corrosion of the lower anchor head of the cable body has become a worldwide problem, resulting in high maintenance costs and reduced operating life of the cable body

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