Cable low heat resistance protection medium and preparing method thereof

A protection filling, low thermal resistance technology, applied in cable installation, ground cable installation, etc., can solve the problems of easy digging of cables, vulnerable to termites, large dielectric loss, etc., to achieve easy on-site construction and operation, and prevent termite erosion. Cable and investment cost reduction effect

A protection filling, low thermal resistance technology, applied in cable installation, ground cable installation, etc., can solve the problems of easy digging of cables, vulnerable to termites, large dielectric loss, etc., to achieve easy on-site construction and operation, and prevent termite erosion. Cable and investment cost reduction effect

CN101764384AActive Publication Date: 2010-06-30广州骏拓电力科技有限公司
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  • Cable low heat resistance protection medium and preparing method thereof
  • Cable low heat resistance protection medium and preparing method thereof
  • Cable low heat resistance protection medium and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] (1) Preparation of cable low thermal resistance protection filling medium

[0023] The cable low thermal resistance protection filling medium of this embodiment comprises 55.5% bentonite, 26% 600 mesh fine quartz sand, 15% water, 3% cement, 0.25% tartaric acid and 0.25% trisodium carbonate based on 100% mass fraction.

[0024] Its preparation method is as follows:

[0025] Add water and fine quartz sand to the bentonite, stir for 20 minutes, and stir evenly to form a paste to form a bentonite glue, and leave the bentonite glue for about 5 minutes. Dissolve tartaric acid and trisodium carbonate in water, then stir for about 20 minutes to fully dissolve to form an additive aqueous solution, then add cement to the solution, stir for about 5 minutes, and make it evenly stirred to form a cement suspension, which is mixed with The above-mentioned bentonite glue solution placed for about 5 minutes was mixed and stirred for about 10 minutes to make it evenly stirred to form th...

Embodiment 2

[0053] (1) Preparation of cable low thermal resistance protection filling medium

[0054] The cable low thermal resistance protection filling medium of the present invention comprises: 54% bentonite, 28% fine quartz sand with a particle size of 600 mesh, 14% water, 3.5% cement, 0.24% tartaric acid, and 0.26% trisodium carbonate based on 100% mass fraction .

[0055] Its preparation method is as follows:

[0056] Add water and fine quartz sand to the bentonite, stir for 15 minutes, and stir evenly to form a paste to form a bentonite glue, and leave the bentonite glue for about 5 minutes. Dissolve tartaric acid and trisodium carbonate in water, then stir for about 30 minutes to fully dissolve to form an additive aqueous solution, then add cement to the solution, stir for about 5 minutes, and make it evenly stirred to form a cement suspension, which is mixed with The above-mentioned bentonite glue solution placed for about 5 minutes was mixed and stirred for about 10 minutes to...

Embodiment 3

[0060] (1) Preparation of cable low thermal resistance protection filling medium

[0061] The cable low thermal resistance protection filling medium of the present invention comprises: 57% of bentonite, 24% of fine quartz sand with a particle size of 600 mesh, 16% of water, 2.5% of cement, 0.26% of tartaric acid, and 0.24% of trisodium carbonate according to the mass fraction of 100%. .

[0062] Its preparation method is as follows:

[0063] Add water and fine quartz sand to the bentonite, stir for 30 minutes, and stir evenly to form a paste to form a bentonite glue, and leave the bentonite glue for about 5 minutes. Dissolve tartaric acid and trisodium carbonate in water, stir for about 15 minutes, make it fully dissolved to form an additive aqueous solution, then add cement to the solution, stir for about 5 minutes, make it evenly stirred to form a cement suspension, the cement suspension and the above The bentonite glue solution placed for about 5 minutes is mixed and stir...

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Abstract

The invention discloses a cable low heat resistance protection medium with high water content, high stability, low heat resistance, environment protection and effective prevention of termite damage, and a preparation method thereof. The filling medium is prepared by mixing bentonite, fine quartz sand, water and cement, and using a small amount of tartaric acid and sodium sesquicarbonate as additives. As accounted by 100% of mass fraction, the filling medium is preferably prepared by 54%-57% of bentonite, 24%-28% of fine quartz sand, 14%-16% of water, 2.5-3.5% of cement, 0.24%-0.26% of tartaric acid and 0.24%-0.26% of sodium sesquicarbonate. Before condensation, the filling medium has the advantages of better initial liquidity, moderate alkalinity, low bleeding rate and the like. After condensation, compared with traditional material, the filling medium has the advantages of high water content and high stability, and enables the surroundings of the cable to maintain low heat resistance for long term, the heat resistance is smaller than that of soil, and the hardness is higher, therefore the current carrying amount of the cable is improved, or the running temperature of the cable conductor is reduced.

Description

Technical field: [0001] The invention relates to a filler for cable construction and a preparation method thereof, in particular to a cable low thermal resistance protection filling medium and a preparation method thereof. Background technique: [0002] Many experts and technicians have been working hard for the safe operation of the cable since the cable was established. In order to increase the current carrying capacity and reduce the local heating bottleneck during laying, anion water cooling, gas cooling, and insulating oil have been developed on cable products. Cooling and other products, but because of the high cost and complicated construction technology, the development of the power system is slow, and the electricity consumption is quite tight, which hinders the rapid development of the national economy and the improvement of people's living standards. In order to prevent termites from damaging cables, chlorosulfonation technology, polymer hard materials and heavy m...

Claims

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Application Information

Patent Timeline
30 Jun 2010
Publication
CN101764384A
IPC
H02G9/02; C04B28/00; C04B14/06
CPC
C04B28/344; C04B2103/0006; C04B28/02
Inventors
刘坚