A color-developing material for laying cables in landfill, its preparation method and application

A technology for laying cables and pigments, applied in the directions of color-changing fluorescent materials, chemical instruments and methods, thermometers with physical/chemical changes, etc. Effects of fire accidents

Active Publication Date: 2022-01-21
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this material is more suitable for paint or dye, and it is still difficult to achieve full-line temperature detection for the filling material of direct buried cables

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides a color-developing material for laying cables in landfills. In the color-developing material, crystal violet lactone:oxalic acid:boric acid=1:350:100 by mass. Crystal violet lactone, oxalic acid, and boric acid were all analytically pure.

[0033] This embodiment also provides a preparation method for the above-mentioned chromogenic material, which specifically includes the following steps:

[0034] S1. Weigh crystal violet lactone, oxalic acid, and boric acid respectively according to the mass ratio of 1:350:100, and fully grind for 10 minutes;

[0035] S2. Mix the above-mentioned ground boric acid, crystal violet lactone and oxalic acid evenly, add alcohol, and carry out planetary ball milling;

[0036] S3. Dry the ball-milled powder above, and then grind for 20 minutes to obtain the color-developing material.

[0037] Table 1 shows the performance index of the chromogenic material prepared in this example in the cable filler under high temp...

Embodiment 2

[0041] The preparation method of the chromogenic material of the present embodiment comprises the following steps:

[0042] S1. Weigh crystal violet lactone, oxalic acid and boric acid respectively according to the mass ratio of 1:300:120, and fully grind for 10 minutes;

[0043] S2. Mix the above ground crystal violet lactone, oxalic acid and boric acid evenly, add alcohol, and carry out planetary ball milling;

[0044] S3. Dry the ball-milled powder above, and then grind for 20 minutes to obtain the color-developing material.

[0045] Table 2 shows the performance index of the chromogenic material prepared in this example in the cable filler under high temperature and high current load environment.

[0046] Table 2

[0047] performance sample color Color changes Color change temperature (initial / full) discoloration sensitivity index White white-rhubarb 67℃ / 72℃ excellent

Embodiment 3

[0049] The preparation method of the chromogenic material of the present embodiment comprises the following steps:

[0050] S1. Weigh crystal violet lactone, oxalic acid, and boric acid respectively according to the mass ratio of 1:350:140, and grind them thoroughly for 10 minutes;

[0051] S2. Mix the above ground crystal violet lactone, oxalic acid, and boric acid evenly, add alcohol, and perform planetary ball milling;

[0052] S3. Dry the ball-milled powder above, and then grind for 20 minutes to obtain the color-developing material.

[0053] Table 3 shows the performance index of the chromogenic material prepared in this example in the cable filler under high temperature and high current load environment.

[0054] table 3

[0055] performance sample color Color changes Color change temperature (initial / full) discoloration sensitivity index White white-dark yellow 65℃ / 70℃ excellent

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Abstract

The invention provides a color-developing material for laying cables in landfill, a preparation method and application thereof. The chromogenic material includes the following components: crystal violet lactone, oxalic acid and boric acid. Through the selection of color-developing materials and the rational design of their proportions, the present invention can respond to temperature changes in time in cable fillers under high-temperature and high-current load environments, quickly realize temperature warnings for cable fillers, and facilitate timely repairs and maintenance. Avoid fire accidents. In terms of morphology and structure, the color-developing material of the present invention is in the form of powder, which can be well integrated and dispersed with the filling material, and is very suitable for temperature detection of the filling material for direct buried cable laying.

Description

technical field [0001] The invention relates to the technical field of electric power facility construction, in particular to a color-developing material used for laying cables in landfill and its preparation method and application. Background technique [0002] Directly buried cables use dispersed filling materials, such as river sand, to directly bury cables in trenches for protection purposes. In the process of cable transmission of electricity, it is inevitable that there will be excessive heat accumulation. At this time, the current carrying capacity of the line needs to be adjusted in time to avoid fire and other accidents caused by excessive temperature. Timely early warning and effective regulation of the carrying capacity of cables have become an indispensable link in the power system. [0003] Usually, the detection of cable temperature in the prior art is infrared temperature measurement technology and optical fiber temperature measurement technology. However, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K9/02G01K11/16
CPCC09K9/02G01K11/16
Inventor 李红发王干军王荣鹏熊振东聂文翔罗应文戴征献于恒友陈清江林洪栋李彦明段海城何建强谭杨宝张志方吴章洪郭宗鑫邓晓阳胡小慢董银龙王灵坤董志聪高松
Owner GUANGDONG POWER GRID CO LTD
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