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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 large initial investment, unsafe, difficult to adapt to mines, underground electrical appliances, etc.

Active Publication Date: 2012-10-03
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] Example 1. The specific method and situation of a coal mine using the desiccant of the present invention.

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

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

[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 condition of switches and other equipment and desiccant shall be inspected once every 2 months (60 days). If it is found that the weight of the desiccant after absorbing moi...

Embodiment 2

[0095] Example 2: The specific method of using the desiccant of the present invention in a coal mine is as follows:

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

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

[0099] 1. High-voltage explosion-proof switch (PGB53-6): 2 packs of 200 grams are placed in the switch cavity and placed in a safe position under the switch cavity;

[0100] 2. Mobile transformer (KBSGZY-630, KBSGZY-1600, etc.): 2 packs of 200 grams each in the lower safe positio...

Embodiment 3

[0108] Example 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 diameters are 0.2~0.4mm); + silicon (sio 2 ) 40 parts of powder (particle size 0.3~0.45mm) + 10 parts of industrial sodium chloride Nacl (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 packaging weight is 50g / bag, 100g / bag.

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

[0112] On April 17th, the desiccant of the present invention was placed in the power distribution cabinets of three LGY-20 / 8 screw air compressors in the underground, and the amount of the desiccant was 200 grams per 50 grams × 4 packs, and no other moisture-proof measures were taken. During this period, the weather was rainy and the underground was severely wet. 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 underground mine electrical equipment and a preparation method thereof, and belongs to the field of moisture absorption and moisture removal desiccants. Mainly used for moisture absorption, moisture removal 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 main provider of national energy. At present, the degree of mechanization and informatization of mines 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; in particular, the requirements for safe operation of power s...

Claims

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Application Information

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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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