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Drying agent for mine underground electric apparatus and preparation method thereof

A technology of electrical equipment and desiccant, applied in the field of dehumidification desiccant and moisture absorption, can solve the problems of high use cost, high comprehensive cost, and many maintenance labor.

Active Publication Date: 2013-12-25
徐州意创化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In addition, for example, a large iron mine has been using the drying method of large incandescent bulbs for a long time (now the country does not allow the use of incandescent bulbs and has been converted into heating panels, but the working principle and effect have not changed), not only unsafe, but also a large initial investment, High power consumption and high usage cost
Routine maintenance requires a lot of labor, and the overall cost is also high (see Table 3)
[0010] To sum up, it can be seen that the various desiccants currently in use are difficult to adapt to the harsh environment of mines, underground electrical appliances, and equipment in near-constant temperature (T=25-32°C) and high humidity (RH=80-100%) for a long time, as well as electrical chambers. The requirement to keep RH<65% all the time

Method used

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  • Drying agent for mine underground electric apparatus and preparation method thereof
  • Drying agent for mine underground electric apparatus and preparation method thereof
  • Drying agent for mine underground electric apparatus and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Embodiment 1, the specific method and situation of using the desiccant of the present invention in a certain coal mine.

[0081] 1) The formula of the desiccant of the present invention is 35 parts of polyacrylate + 15 parts of modified PVA, the particle size of which is 0.2-0.4 mm + silicon (sio 2 ) powder 40 parts, the particle size is 0.3 ~ 0.45mm + 10 parts Nacl for industrial use, the particle size is 0.15 ~ 0.3mm. The colors are all white or off-white.

[0082] 2) The packaging material is non-conductive non-woven fabric. See Table 4 for the packaging size, weight per package, and usage amount.

[0083]3) Placement requirements: Keep a distance of more than 50mm between the desiccant and the charged part of 6KV, and keep a distance of more than 20mm between the charged part of 1140V and below.

[0084] 4) The mine stipulates that the switch and other equipment and desiccant should be inspected once every two months (60 days). If it is found that the weight of t...

Embodiment 2

[0095] Embodiment 2: the concrete method that certain coal mine uses desiccant of the present invention is as follows:

[0096] 1) The desiccant formula of the present invention is 32 parts of polyacrylate + 16 parts of polyacrylamide (both particle sizes are 0.2-0.4 mm) + 40 parts of silica gel waste powder (particle size is 0.25-0.45 mm) + dihydrate chlorine Calcium (cacl 2 .2H 2 O) 7 parts + industrial salt sodium chloride (Nacl) 5 parts (all particle sizes are 0.15 ~ 0.30mm). The color is all white or off-white.

[0097] 2) The packaging material is non-conductive non-woven fabric, and the weight of each package is 50g, 100g, and 200g respectively.

[0098] 3) The specific placement equipment and location are as follows:

[0099] 1. High-voltage explosion-proof switch (PGB53-6): put 2 packs of 200 grams in the switch cavity, and place it in a safe position at the lower part of the switch cavity;

[0100] 2. Mobile transformers (KBSGZY-630, KBSGZY-1600, etc.): put 2 pa...

Embodiment 3

[0108] Embodiment 3, a certain iron mine in my country tried the desiccant of the present invention in April 2010.

[0109] 1) The desiccant formula of the present invention is 35 parts of polyacrylate + 15 parts of modified PVA (both particle sizes are 0.2-0.4 mm); + silicon (sio 2 ) powder 40 parts (particle size 0.3 ~ 0.45mm) + industrial sodium chloride Nacl 10 parts (particle size 0.15 ~ 0.30mm). The color is white or off-white.

[0110] 2) The packaging material is non-conductive non-woven fabric. The packing weight is 50g / pack and 100g / pack.

[0111] 3) The specific placement equipment and location are as follows

[0112] On April 17, the desiccant of the present invention was placed in the power distribution cabinets of three LGY-20 / 8 screw air compressors in the mine, and the dosage was 200 grams per 50 grams x 4 packs, and no other moisture-proof measures were taken. During this period, the weather was rainy and the underground was very humid. After more than a ...

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Abstract

The invention discloses a drying agent for an mine underground electric apparatus and a preparation method of the drying agent, belonging to the field of drying agent, wherein macromolecule water absorbent, compound of silicon or calcium and alkali halide or modified starch are mixed so as to prepare the powdery draying agent according to part by weight; the macromolecule water absorbent is 35-70 parts; the compound of silicon or calcium is 25-55 parts; the alkali halide or a mixture of the alkali halide and the modified starch is 10-15 parts; the grain size of the macromolecule water absorbent is 0.20-0.40mm; and the drying agent is powdery. According to the invention, raw material is wide in source and is purchased easily on the market; the drying agent is used for high / low-voltage power supply appliances worked on a mine underground high-humidity condition (RH=80-100%); the dry powder resists 6000V voltage or does not be broken down under voltage of 3000V; when moisture rate reaches to 1g / g, the dry powder resists 2500V voltage or does not be broken down under voltage of 1200V.

Description

technical field [0001] The invention relates to a desiccant for electrical equipment in underground mines and a preparation method thereof, which belongs to the field of desiccant for moisture absorption and dehumidification. It is mainly used for moisture absorption, dehumidification and drying of electrical equipment used in various mines and underground projects. Background technique [0002] Various mines such as coal mines, iron mines, metal mines and non-metal mines are the lifeblood of the national economy. Coal mines are the country's main provider of energy. The current level of mine mechanization and informatization is greatly improved. A large number of mechanical equipment, communication equipment, and lighting equipment are concentrated underground, and the temperature and humidity environment of the equipment is very complicated and harsh. Whether electrical equipment can run dry has a great impact on safety; especially the requirements for safe operation of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/28
Inventor 陈孟伯陈舸
Owner 徐州意创化工科技有限公司
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