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Thermal-shrinkage waterproof sealing cap for high-voltage cable

A high-voltage cable and heat-shrinking technology, used in cable terminals, cable accessories, cable installation, etc., can solve the problems of fire-proof mud gaps or cracks, unreliable sealing, hidden safety hazards, etc., achieving low dependence and convenient disassembly and assembly. , the effect of easy reset

Active Publication Date: 2018-11-16
STATE GRID HEBEI ELECTRIC POWER CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The substation leads the guide cable on the ground from the cable trench. It is necessary to seal the gap between the casing and the cable. Fire-proof mud is mainly used. Although this method can protect the sealing part in the short term, but only using fire-proof mud to seal will cause damage. It causes problems such as unreliable sealing and loose fastening. The fireproof mud is also susceptible to cracks or cracks due to the influence of external conditions over time, and there are certain safety hazards
Especially in winter, rainwater will soak into the casing and freeze, which will eventually cause cable failure in the casing. Therefore, it is an urgent problem to develop a cable waterproof sealing cap that is easy to install and maintain.

Method used

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  • Thermal-shrinkage waterproof sealing cap for high-voltage cable
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  • Thermal-shrinkage waterproof sealing cap for high-voltage cable

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specific Embodiment 2

[0023] Specific embodiment 2, such as figure 2 As shown, the housing has an upper and lower split structure, including an upper casing 10 and a lower casing 11, and the end cover 3 is provided with an upper sealing screw sleeve 12 wrapped on the cable body 2, and The lower sealing screw sleeve 13 wrapped on the outer wall of the casing 1, the upper sealing screw sleeve 12 and the lower sealing screw sleeve 13 are provided with external threads, and the upper sealing shell 10 is connected with the upper sealing screw sleeve 12 and the end cap 3 are threadedly connected, and the lower casing 11 is threadedly connected with the end cover 3 by means of the lower sealing screw sleeve 13 . The upper casing 10 and the lower casing 11 are fixed by the external thread provided on the inner end cover 3, the overall appearance is neat, no metal parts are exposed outside, avoiding overlooking from rainwater, etc., the casing is made of fireproof material such as electrical wood, and has ...

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PUM

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Abstract

The invention belongs to the field of waterproof sealing caps for sealing cable pipe orifices, and specifically relates to a thermal-shrinkage waterproof sealing cap for a high-voltage cable. The sealing cap is low in dependence on the diameter of the cable and the diameter of a casing pipe, and can achieve the better sealing of guide cables and casing pipes in various sizes. The sealing cap employs an insulating material, and a fire retardant is added for preparation, so the waterproof performance is excellent. The sealing cape is suitable for the protection and sealing of various types of cable pipe orifices, such as a cable protection tube and a cable incoming and outgoing mouths of a transformer substation. The sealing cab can achieve the waterproof, fireproof and insulating functionsat the same time, facilitates the early construction operation and the later maintenance management, and no metal part is exposed outside. The sealing cap is good in aging resistance, insulating performance, waterproof and fireproof performances, is good in corrosion resistance, and is good in application prospect.

Description

technical field [0001] The invention belongs to the field of waterproof sealing caps used for sealing cable nozzles, in particular to heat-shrinkable waterproof sealing caps for high-voltage cables. Background technique [0002] The substation leads the guide cable on the ground from the cable trench. It is necessary to seal the gap between the casing and the cable. Fire-proof mud is mainly used. Although this method can protect the sealing part in the short term, it will be difficult to seal it only with fire-proof mud. It causes problems such as unreliable sealing and loose fastening. The fireproof mud is also susceptible to cracks or cracks due to the influence of external conditions over time, and there are certain potential safety hazards. Especially in winter, rainwater will immerse in the casing and freeze, which will eventually cause cable failure in the casing. Therefore, developing a cable waterproof sealing cap that is easy to install and maintain has become a pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G15/04
CPCH02G15/046
Inventor 李宏峰白云飞李朝峰杨博超郭涛成洪刚陈汇东郭康林超谷冉刘保安余涛朱江勇
Owner STATE GRID HEBEI ELECTRIC POWER CO LTD
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