Cable low heat resistance protection medium and preparing method thereof

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...

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