CN103216255B - Compressed air cold conveying cooling system for mine and cooling method thereof - Google Patents
Compressed air cold conveying cooling system for mine and cooling method thereof Download PDFInfo
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- CN103216255B CN103216255B CN201310140193.6A CN201310140193A CN103216255B CN 103216255 B CN103216255 B CN 103216255B CN 201310140193 A CN201310140193 A CN 201310140193A CN 103216255 B CN103216255 B CN 103216255B
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Abstract
The invention discloses a compressed air cold conveying cooling system for a mine and a compressed air cold conveying cooling method. The compressed air cold conveying cooling system is formed by sequentially connecting an air compressor, a natural cold source subsystem, a manual cold source subsystem, a compressed air injection and air supply device through a compressed air conveying pipeline, wherein the air compressor, the natural cold source subsystem and the manual cold source subsystem are arranged on the ground, and the compressed air injection and air supply device is arranged on an underground mine working surface. The natural cold source subsystem is a water cycle cooling passage connected by a first level cooling tower and a first level cooling sprinkling chamber through a pipeline for pre-cooling compressed air. The manual cold source subsystem is water cycle cooling passage sequentially connected by a second level cooling tower, a second level sprinkling chamber and a refrigerating unit through the pipeline through the pipeline for manually cooling the compressed air. Due to the fact that natural cold source is utilized to conduct pre-cooling on the compressed air, refrigeration load of manual refrigeration equipment is greatly reduced, in winter or a transition season, the manual cooling system does not even need to be operated, and then operating cost of the compressed air cold conveying cooling system is greatly reduced.
Description
Technical field
The present invention relates to type pit cooling system, particularly relate to the defeated cold type pit cooling system of compressed air.
Background technology
Along with the continuous increase of the pit mining degree of depth and improving constantly of mining machines degree, underground thermal pollution becomes the deciding factor of the restriction pit mining degree of depth.For adopting deeply more than the Deep Mine of 800 meters, because heat evil problem is more outstanding, only by adopting the technical measures increasing the unartificial refrigeration such as mine ventilation amount, the control objectives of underground thermal pollution fundamentally can not be reached.Therefore, adopt the heat evil problem of artificial hypothermia's Systematical control mine at present more.
Artificial hypothermia's system of mine is made up of large-scale chiller plant, large-scale air treatment facility, cooling medium conveying system and relevant auxiliary equipment usually.According to the difference of refrigeration unit infield, type pit cooling system can be divided into refrigeration unit to be arranged on ground, and refrigeration unit is arranged on down-hole, and it is dissimilar that refrigeration unit etc. is installed in ground and underground simultaneously.
The surface-based type pit cooling system of refrigeration unit, according to the difference of refrigerant, can be divided into the defeated cooling system of water and ice defeated cooling system two type.Because refrigeration unit and heat extraction cooling tower are all located at ground, this two germlines controlling cold efficiency is higher.But for the defeated cooling system of water, due to the static pressure problem of water, the bottom static pressure of aqueduct can reach up to a hundred kilograms, conventional pipeline and conventional air cooler are all difficult to bear, and adopt high voltage bearing pipeline and air cooling apparatus, then greatly construction investment be can improve, and the heat-transfer effect of air cooler and the utilization ratio of cold significantly reduced.According to classification series connection cooling, although can solve the problem, because every grade of heat exchange all exists heat transfer temperature difference, then cold water is delivered to the temperature rise that bottom air cooler may produce more than 10 DEG C, thus causes most cold consumption in cold course of conveying.For the defeated cooling system of ice, need to realize the several functions such as the defeated ice in ground ice making, flake ice, ground and down-hole, underground ice-melting, down-hole cold water conveying, system complex, investment cost and running cost high, cold waste is large, and system starts slowly, and system is once start, then must run continuously.
Refrigeration unit is arranged on the type pit cooling system of down-hole, according to the difference of heat extraction cooling tower installation site, is divided into down-hole heat-extraction system and ground heat-extraction system two class.The cooling tower of down-hole heat-extraction system is generally arranged in return aircourse.Due to the temperature humidity in return airway all higher (relative humidity is many more than 90%), cooling capacity is little, cooling effect extreme difference, thus causes the refrigerating efficiency of refrigeration unit very low.And although ground heat-extraction system solves heat removal issue, because cooling water produces larger static pressure at refrigeration unit place, the refrigeration unit of the high pressure condenser of voltage endurance capability up to hundreds of kilograms need be configured, or high-low pressure heat exchanger is set on cooling water pipeline.These two kinds of measures all significantly all reduce the refrigerating efficiency of refrigeration unit.
The type pit cooling system of refrigeration unit is installed in ground and down-hole simultaneously, and it is in fact two-stage refrigeration unit cascade refrigeration.Dual unit cold efficiency is low, and cold damage is large, and need to arrange condenser can high voltage bearing refrigeration unit and high-low pressure heat exchanger, system complex, poor stability.
Above three class type pit cooling systems also have a common feature, are namely needing the place (face, pump house etc.) of cooling to arrange air cooler.Because subsurface environment Dust Concentration is high, high humidity, in addition multiple corrosive gas, so air cooler has easily tie the shortcomings such as dirt, perishable, heat-transfer effect is poor, requirement of explosion proof is high.
At " mining safety and environmental protection " the 31st volume the 3rd phase in 2004 disclosed the New Mine central air-conditioning system of cooling " employing a calm the anger " literary composition with the immediate prior art of the present invention.In this article, disclose following technology, namely utilize compressed air as cooling medium, directly to getting working face ejector refrigeration; System is primarily of a few part composition such as refrigeration unit, air compressor machine, appendix, Intermediate Heat Exchanger and air-supply gas, and its main feature is, air compressor machine is installed on the ground, and refrigeration unit and ancillary service, Intermediate Heat Exchanger etc. are arranged in the chamber of down-hole; Ground air is by after the compression of ground air compressor machine, by gas pipeline be delivered to down-hole Intermediate Heat Exchanger (cryogenic media of Intermediate Heat Exchanger is the chilled water from refrigeration unit) carry out cooling process after, getting working face is delivered to by defeated cold pipeline, work plane is penetrated by blower, forms cold air jet; Cold air jet through overexpansion, entrainment, effect and the distinguished and admirable generation interchange of heat of work plane such as blending, thus reach the object of working face cooling.There is the problem of following two aspects in type pit cooling system disclosed in the document: after 1. air is compressed by compressor, and interior energy increases, and temperature raises (usually high than environment temperature 30 DEG C ~ 60 DEG C).The cooling load of type pit cooling system and operating cost is caused to increase substantially; 2. refrigeration unit and heat-removal equipment are all arranged in the chamber of down-hole, and cause system off heat difficulty, refrigeration unit operational efficiency reduces, and must adopt explosion-proof type equipment, and safety is poor, and cost of investment is high.
Summary of the invention
The object of the invention is the shortcoming overcoming above-mentioned compressed air type pit cooling system, by technological improvement, provide a kind of economical and energy saving, the safely and efficiently defeated cooling system of mine compressed air.This cooling system is installed on ground by refrigeration and heat-removal equipment, adopts artificial hypothermia and natural cooling source to lower the temperature the refrigeration modes combined.
For achieving the above object, present system is connected in sequence by compressed air tunnel by blast injection air-supply arrangement three part being arranged on the air compressor on ground, natural cooling source subsystem, artificial cold source subsystem and being arranged on mining face under mine; Wherein:
Described natural cooling source subsystem is the water circulation cooling channel pre-cooled for compressed air be formed by connecting by pipeline by a grade cooling tower and one-level chilling spray room;
Described artificial cold source subsystem is the water circulation cooling channel manually cooled for compressed air be connected in sequence by pipeline by two grade cooling towers, secondary chilling spray room and refrigeration unit.
The method utilizing cooling system of the present invention to lower the temperature to mine compressed air is as follows:
The first step: compressed-air actuated pre-cooled
The compressed air being prepared out by air compressor is by the one-level chilling spray room of natural cooling source subsystem, after carrying out interchange of heat with the recirculated cooling water of one-level chilling spray indoor, temperature can be reduced to the state roughly balanced with ambient air temperature, realizes compressed-air actuated pre-cooled; The cooling water simultaneously flowed out by a grade cooling tower, after the compressed-air actuated most of heat of the indoor absorption of one-level chilling spray, flows back to a grade cooling tower 5, realizes the circulating cooling of the pre-cooled water of compressed air.
Second step: compressed-air actuated artificial cooling
Compressed air after pre-cooled by natural cooling source subsystem enters the secondary chilling spray room of artificial cold source subsystem, carries out interchange of heat, be cooled to the low temperature of requirement further with the recirculated cooling water of secondary chilling spray indoor; Meanwhile, the circulated refrigerated water supplied by the evaporimeter of refrigeration unit, enters after secondary chilling spray room absorbs compressed-air actuated heat, flows back to refrigeration unit, realize the circulating cooling of artificial cold source chilled water; The cooling water flowed out by two grade cooling towers enters refrigeration unit condenser, after the heat of absorption refrigeration agent release, flows back to two grade cooling towers, realizes the circulating cooling of refrigeration unit cooling water.
3rd step: the conveying of low temperature compressed air
Through the cooled low temperature compressed air of artificial cold source subsystem, be delivered to mining face under mine by compressed air utilidor and annex, sprayed by injection air outlet, through overexpansion, entrainment and blending effect, realize the cooling effect of work plane.
Advantage of the present invention is:
(1) natural cooling source is utilized to carry out pre-cooled to compressed air, significantly can reduce the cooling load of artificial cooling equipment, season even can not run artificial cooling system (now in the winter time or excessively, secondary chilling spray room is only as compressed-air actuated transfer passage), thus significantly reduce the operating cost of type pit cooling system.
(2) compressed-air actuated artificial cooling device is all arranged on the ground, can adopt non-explosion-proof type equipment, and construction cost is low, refrigerating efficiency is high.
(3) large, the defeated cold energy power of compressed air volume specific heat is strong, and volume flow is little, so conduit section is little, invests low, is convenient to arrange and insulation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment of the present invention.
In figure: 1-air compressor, 2-mono-grade cooling tower, 3-one-level chilling spray room, 4-bis-grade cooling tower, 5-refrigeration unit, 6-secondary chilling spray room, 7a-one-level cooled compressed air conveyance conduit, 7b-secondary cooled compressed air conveyance conduit, the complete cooled compressed air utilidor of 7c-, 8-pit shaft, 9-mining face under mine, 10-blast injection air-supply arrangement, 11-work plane intake entry.
Detailed description of the invention
Below in conjunction with accompanying drawing and workflow of the present invention, its detailed description of the invention is described.
As shown in Figure 1, present system is connected in sequence by compressed air tunnel by blast injection air-supply arrangement 10 4 part being arranged on the air compressor 1 on ground, natural cooling source subsystem, artificial cold source subsystem and being arranged on mining face under mine; Wherein:
Described natural cooling source subsystem is the pre-cooled water circulation cooling channel of compressed air be formed by connecting by pipeline by a grade cooling tower 2 and one-level chilling spray room 3;
Described artificial cold source subsystem is the refrigeration unit cooling water circulation cooling channel be connected in sequence by pipeline by two grade cooling towers 4, refrigeration unit 5 and secondary chilling spray room 6.
As can be seen from the figure:
The technological process of natural cooling source subsystem is: the cooling water flowed out by a grade cooling tower 2, one-level chilling spray room 3 is entered through feed pipe, circulating water pump and annex, after absorbing compressed-air actuated most of heat, flow back to one-level cooling tower 2 through return pipe and annex again, realize the circulating cooling of the pre-cooled water of compressed air.
The technological process of artificial cold source subsystem is: the cooling water flowed out by two grade cooling towers 4, through refrigeration unit recirculated cooling water feed pipe, circulating water pump and annex, enter the condenser of refrigeration unit 5, after the heat of absorption refrigeration agent release, again through refrigeration unit cooling water return pipe and annex, flow back to two grade cooling towers 4, realize the circulating cooling of refrigeration unit cooling water; The circulated refrigerated water supplied by the evaporimeter of refrigeration unit 5, feed pipe through secondary chilling spray room 6, circulating water pump and annex, enter secondary chilling spray room 6, after the compressed-air actuated heat of further absorption, return pipe again through secondary chilling spray room 6 and annex flow back to refrigeration unit 5, realize the circulating cooling of artificial cold source chilled water.
It can also be seen that from figure, during present system work, surrounding air, after air compressor 1 is compressed to certain pressure, by one-level cooled compressed air conveyance conduit 7a and annex, enters one-level chilling spray room 3 and carries out pre-cooled; Compressed air after pre-cooled enters secondary chilling spray room 6 by secondary cooled compressed air conveyance conduit 7b and annex, after being cooled to the low temperature of requirement further, complete cooled compressed air utilidor 7c again by laying on the ground, in pit shaft 8, work plane intake entry 11 and annex are delivered to mining face under mine 9, sprayed by injection air-supply arrangement 10, through overexpansion, entrainment and blending effect, realize the cooling effect of work plane.
Claims (1)
1. the method utilizing the defeated cold cooling system of compressed air to lower the temperature to mine, it is characterized in that, described cooling system is connected in sequence by compressed air tunnel by blast injection air-supply arrangement three part being arranged on the air compressor on ground, natural cooling source subsystem, artificial cold source subsystem and being arranged on mining face under mine; Wherein:
Described natural cooling source subsystem is the water circulation cooling channel pre-cooled for compressed air be formed by connecting by pipeline by a grade cooling tower and one-level chilling spray room;
Described artificial cold source subsystem is the water circulation cooling channel manually cooled for compressed air be connected in sequence by pipeline by two grade cooling towers, secondary chilling spray room and refrigeration unit;
This cooling system is utilized to the method that mine is lowered the temperature to be:
The first step: compressed-air actuated pre-cooled
The compressed air being prepared out by air compressor is by the one-level chilling spray room of natural cooling source subsystem, after carrying out interchange of heat with the recirculated cooling water of one-level chilling spray indoor, temperature can be reduced to the state roughly balanced with ambient air temperature, realizes compressed-air actuated pre-cooled; The cooling water simultaneously flowed out by a grade cooling tower, after the compressed-air actuated most of heat of the indoor absorption of one-level chilling spray, flows back to a grade cooling tower 5, realizes the circulating cooling of the pre-cooled water of compressed air;
Second step: compressed-air actuated artificial cooling
Compressed air after pre-cooled by natural cooling source subsystem enters the secondary chilling spray room of artificial cold source subsystem, carries out interchange of heat, be cooled to the low temperature of requirement further with the recirculated cooling water of secondary chilling spray indoor; Meanwhile, the circulated refrigerated water supplied by the evaporimeter of refrigeration unit, enters after secondary chilling spray room absorbs compressed-air actuated heat, flows back to refrigeration unit, realize the circulating cooling of artificial cold source chilled water; The cooling water flowed out by two grade cooling towers enters refrigeration unit condenser, after the heat of absorption refrigeration agent release, flows back to two grade cooling towers, realizes the circulating cooling of refrigeration unit cooling water;
3rd step: the conveying of low temperature compressed air
Through the cooled low temperature compressed air of artificial cold source subsystem, be delivered to mining face under mine by compressed air utilidor and annex, sprayed by injection air outlet, through overexpansion, entrainment and blending effect, realize the cooling effect of work plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310140193.6A CN103216255B (en) | 2013-04-22 | 2013-04-22 | Compressed air cold conveying cooling system for mine and cooling method thereof |
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| CN201310140193.6A CN103216255B (en) | 2013-04-22 | 2013-04-22 | Compressed air cold conveying cooling system for mine and cooling method thereof |
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| CN103216255B true CN103216255B (en) | 2015-03-11 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134280A (en) * | 2015-08-18 | 2015-12-09 | 王勇 | Mine underground cooling device |
| CN105484786A (en) * | 2015-11-09 | 2016-04-13 | 北京工业大学 | Mine thermal damage treatment system and method by single screw air compression refrigeration |
| CN106761886A (en) * | 2017-01-04 | 2017-05-31 | 中国矿业大学 | A kind of mine return air radiating working face Local Air-cooling System |
| CN107270584B (en) * | 2017-07-25 | 2019-09-24 | 中南大学 | A kind of distributed cooling air source heat pump system using mine low grade heat energy |
| CN107299840A (en) * | 2017-08-14 | 2017-10-27 | 中环智创（北京）科技有限公司 | The integrated system of mine cooling and heat energy utilization |
| CN107882564A (en) * | 2017-09-30 | 2018-04-06 | 河南理工大学 | A kind of crossdrift passing fault method |
| CN109236347A (en) * | 2018-10-19 | 2019-01-18 | 湖南信息学院 | A kind of mine downhole intelligent cooling device |
| CN110107335B (en) * | 2019-06-13 | 2024-07-16 | 济南杰瑞复盛机电设备有限公司 | Underground combined water ring type large-temperature-difference cooling and heating system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2674102Y (en) * | 2004-01-19 | 2005-01-26 | 郎庆田 | Low temp. rediation temp.-lowering system using ice in mine |
| CN101169040A (en) * | 2006-10-23 | 2008-04-30 | 兖矿新陆建设发展有限公司 | Mine working face cooling system |
| CN201100135Y (en) * | 2007-09-27 | 2008-08-13 | 武汉星田热环境控制技术有限公司 | Ice cooling temperature reduction system for mine |
| CN101344009A (en) * | 2008-08-29 | 2009-01-14 | 中国科学院广州能源研究所 | Mine cooling-down system and method |
| CN102116166A (en) * | 2011-02-21 | 2011-07-06 | 武汉星田热环境控制技术有限公司 | Vacuum ice-making, refrigeration and cooling system for mine shaft |
-
2013
- 2013-04-22 CN CN201310140193.6A patent/CN103216255B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2674102Y (en) * | 2004-01-19 | 2005-01-26 | 郎庆田 | Low temp. rediation temp.-lowering system using ice in mine |
| CN101169040A (en) * | 2006-10-23 | 2008-04-30 | 兖矿新陆建设发展有限公司 | Mine working face cooling system |
| CN201100135Y (en) * | 2007-09-27 | 2008-08-13 | 武汉星田热环境控制技术有限公司 | Ice cooling temperature reduction system for mine |
| CN101344009A (en) * | 2008-08-29 | 2009-01-14 | 中国科学院广州能源研究所 | Mine cooling-down system and method |
| CN102116166A (en) * | 2011-02-21 | 2011-07-06 | 武汉星田热环境控制技术有限公司 | Vacuum ice-making, refrigeration and cooling system for mine shaft |
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Granted publication date: 20150311 Termination date: 20180422 |