HANGZHOU HENMA ELECTRIC POWER TECHNOLOGY CO., LTD

Hangzhou Henma Power Technology Co., Ltd.

NEWS CENTER

What materials are required for cable waterproofing and sealing of voids

Release time:

2022-05-27

The use of materials such as cement and fire mud for cable waterproofing and sealing is mainly based on fast drying cement, combined with fire agent grinding and mixing. It has good water and oil resistance, and the construction method is simple. However, the construction time and material curing time, as well as the construction environment requirements are high, too high or too low, are not suitable. During the construction process, a dry environment inside the pipeline should be maintained. It is not convenient to construct when there are cables inside the pipeline.

　　Nowadays, the construction standards for power installation are becoming increasingly high, and the requirements for waterproof and sealing materials for cables are also becoming stricter. So what is the material used for waterproof sealing of cables in terms of voids? Come and take a look together.

　　What materials should be used for cable waterproofing and hole sealing

　　1. Cement and fireproof mud sealing

　　2. Sealing of cables with foam adhesive for waterproofing

　　Using foam rubber materials for plugging, many cables can be plugged with cables, but the plugging effect is poor and the probability of rain water leakage is high.

　　3. Flexible sealing airbags for inflatable pipes used for cable waterproofing and sealing

　　The gap between materials specifically used for waterproof sealing of cables and new generation flexible sealing materials for pipelines adopts the principle of gas expansion sealing. Compared with traditional sealing products such as cement and fireclay, the performance is relatively stable and can adapt to various pipeline environments. And the construction is relatively convenient and simple, suitable for peak power maintenance. It can effectively achieve complete waterproofing, sedimentation, and prevent small animals from entering. Whether it is a single or multiple cable passing through a pipeline, or a reserved pipeline, there can be no fine seam filling at all.

　　4. Organic fire-resistant sealing materials for cable waterproofing and sealing

　　Wrap organic fireproof blocking materials around the cable. During construction, pay attention to the uniform and dense application of fireproof blocking materials, and the blocking materials should be higher than the partition. The aluminum alloy frame should be used for shaping. The depth of the plugging material embedded into the pipe mouth should not be less than 50mm, and the reserved hole should be kept flat for plugging.