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Insulation sealing method of cable joint

A technology of cable joints and insulation sealing, which is applied to gas-filled/oil-filled cable accessories, adhesive types, rosin adhesives, etc., which can solve problems such as inability to guarantee cable insulation performance, affect cable service life, and affect line safety. , to achieve the effect of ensuring service life, easy removal, and avoiding oxidation leakage

Active Publication Date: 2016-10-19
JINZHOU ELECTRIC POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, wrapping waterproof tape around the cable is a relatively convenient and quick way, but in outdoor humid environment, underground aquifer, water or harsh environment, the insulation performance of the cable cannot be guaranteed, and oxidation and leakage occur easily. , affect the safety of the line, or cause excessive contact resistance, affecting the service life of the cable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1.1. Prepare sealed waterproof insulating rubber clay

[0028] Weigh raw materials: natural rubber 100g; liquid polyisobutylene 32g; α-pinene resin 12g; zinc oxide 6g; sulfur 3.5g; stearic acid 3.5g; 0.6g accelerator DM; 1.3g accelerator TMTD; channel carbon black 60g; 0.8g rubber anti-aging agent RD; rosin 10.5g; mix the natural rubber particles and channel black evenly, then add zinc oxide, sulfur, stearic acid, accelerator DM and accelerator TMTD and stir evenly, and finally add Stir liquid polyisobutylene, rubber antioxidant RD, rosin and α-pinene resin evenly, then heat to 100°C for 40 minutes, cool to room temperature, and seal the package;

[0029] 1.2. Preparation of sealed waterproof insulating rubber mud strips

[0030] Press the waterproof insulating rubber clay into a sealed waterproof insulating rubber clay strip with a thickness of 2mm and a width of 4cm, attach a layer of anti-adhesive film to the upper surface of the sealed waterproof insulating rubber ...

Embodiment 2

[0045] 1.1. Prepare sealed waterproof insulating rubber clay

[0046] Weigh raw materials: 100g of natural rubber; 32g of liquid polyisobutylene; 12g of α-pinene resin; 6.5g of zinc oxide;

[0047] 3g of sulfur; 4g of stearic acid; 0.4g of accelerator DM; 1.5g of accelerator TMTD; 58g of channel black; 1g of rubber antioxidant RD; Zinc oxide, sulfur, stearic acid, accelerator DM and accelerator TMTD are stirred evenly, and finally liquid polyisobutylene, rubber antioxidant RD, rosin and α-pinene resin are added in turn and stirred evenly, then heated to 100°C for 60 minutes, cooled to room temperature, sealed package;

[0048] 1.2. Preparation of sealed waterproof insulating rubber mud strips

[0049] Press the waterproof and insulating rubber clay into a sealed waterproof and insulating rubber clay strip with a thickness of 1.5mm and a width of 5cm. The upper surface of the sealed waterproof and insulating rubber clay strip is attached with a layer of anti-adhesive film, an...

Embodiment 3

[0064] 1.1. Prepare sealed waterproof insulating rubber clay

[0065] Weigh raw materials: natural rubber 100g; liquid polyisobutylene 32g; α-pinene resin 12g; zinc oxide 6.2g; sulfur 3.2g; stearic acid 3.8g; 0.5g accelerator DM; 1.4g accelerator TMTD; Black 59g; 0.9g rubber anti-aging agent RD; rosin 10.2g; mix the natural rubber particles and channel black evenly, then add zinc oxide, sulfur, stearic acid, accelerator DM and accelerator TMTD and stir evenly, and finally Add liquid polyisobutylene, rubber antioxidant RD, rosin and α-pinene resin and stir evenly, then heat to 100°C for 50 minutes, cool to room temperature, and seal the package;

[0066] 1.2. Preparation of sealed waterproof insulating rubber mud strips

[0067] Press the waterproof and insulating rubber clay into a sealed waterproof and insulating rubber clay strip with a thickness of 3mm and a width of 3cm, attach a layer of anti-adhesive film to the upper surface of the sealed waterproof and insulating rubb...

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Abstract

An insulation sealing method of a cable joint is disclosed. Natural rubber particles and channel black are uniformly stirred. And then zinc oxide, sulphur, stearic acid, an accelerant DM and an accelerant TMTD are successively added and are stirred uniformly. Finally, liquid polyisobutene, a rubber antioxidant RD, rosin and alpha-pinene resin are successively added and are stirred uniformly. The above mixture is heated to 100 DEG C and thermal insulation is performed, and then the mixture is cooled to a room temperature so as to acquire waterproof insulation rubber mud. The waterproof insulation rubber mud is pressed into a sealing waterproof insulation rubber mud strip. Two cable joints of a cable to be connected are connected and then the sealing waterproof insulation rubber mud strip is used to fill in a gap between the two connected cable joints. And then the sealing waterproof insulation rubber mud strip wraps a connection position of the two cable joints and finally an electric adhesive plaster is used to carry out fixation. The method has advantages that operation is convenient and fast; effects of isolating air and moisture and insulating are possessed; the cable joint which is bared in the air or in the ground is protected; and conditions of oxidation and electric leakage of a line contact point and a large contact resistance can be avoided.

Description

technical field [0001] The invention relates to an insulating and sealing method for a cable joint. Background technique [0002] In cable installation work or emergency repair of cable accidents, underground power line joints often appear, and cable insulation is generally carried out by means of distribution boxes, underground cable wells or winding waterproof tape outside the cables. Among them, wrapping waterproof tape around the cable is a relatively convenient and quick way, but in outdoor humid environment, underground aquifer, water or harsh environment, the insulation performance of the cable cannot be guaranteed, and oxidation and leakage occur easily. , affect the safety of the line, or cause excessive contact resistance, affecting the service life of the cable. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an insulating and sealing method for cable joints, which is convenient and quick to operate, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G15/25C09J107/00C09J123/20C09J193/04C09J11/08C09J11/06C09J11/04
Inventor 景欣刘长庆杨月颖王京刘波
Owner JINZHOU ELECTRIC POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY
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