CN102536297A - Cold conveying system of mine air-conditioning and working method of cold conveying system - Google Patents
Cold conveying system of mine air-conditioning and working method of cold conveying system Download PDFInfo
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- CN102536297A CN102536297A CN2012100487333A CN201210048733A CN102536297A CN 102536297 A CN102536297 A CN 102536297A CN 2012100487333 A CN2012100487333 A CN 2012100487333A CN 201210048733 A CN201210048733 A CN 201210048733A CN 102536297 A CN102536297 A CN 102536297A
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Abstract
The invention discloses a cold conveying system of a mine air-conditioning and a working method of the cold conveying system. The cold conveying system of the mine air-conditioning comprises a refrigerating device, a heat exchanger and an air cooler, wherein the refrigerating device is distributed on the ground, the heat exchanger is distributed underground, and the air cooler is distributed at an underground cooling working point; a sealed circulation system is formed by an evaporator at the refrigerating device distributed on the ground and the heat exchanger distributed underground through a pipeline and is filled with refrigerating agents, and thus the circulation system is called as a refrigerating agent circulation system; and a sealed circulation system is formed by the heat exchanger distributed underground and the air cooler distributed underground through the pipeline and a circulation pump and is filled with cooling water, and thus the circulation system is called as a cooling water circulation system. According to the cold conveying system of the mine air-conditioning, disclosed by the invention, the cooling for the underground working point is realized, and the purposes that the cold conveying system of the mine air-conditioning has a low energy consumption, a good cooling effect and a low cost are realized.
Description
Technical field
The present invention relates to utilize cold-producing medium to circulate in a mine air conditioner defeated cooling system, particularly mine vertical tube and carry the system and method for cold.
Background technology
At present, the China's coal-mine mining depth increases more than 800m and gradually mostly, and the comprehensive mechanization degree improves constantly, and underground heat and underground equipment significantly increase to the heat that underground air distributes; And hot water of from rock fracture, gushing out or the high temperature country rock heat release that contacts with hot water make not only that temperature raises in the ore deposit, and cause humidity to increase; High temperature, high humidity environment have a strong impact on the healthy and production efficiency of underground operators in the ore deposit, have caused disaster---the heat evil.Underground thermal pollution becomes the deciding factor of the restriction mineral mining degree of depth the most at last, therefore, must utilize mine air conditioner to realize that the downhole cooling dehumidifying is to eliminate down-hole heat evil.
At present, the chiller plant of mine air conditioner can be arranged in down-hole and ground.When chiller plant is positioned over the down-hole; Need the special main equipment chamber of excavation; Require chiller plant to satisfy explosion-proof criteria under the coal mine, facility compactization and high reliability simultaneously; The ripe chiller plant of ordinary skill can't satisfy these requirements, and chiller plant is positioned over the down-hole to also have a key issue be that the refrigeration machine heat extraction is not smooth, has greatly reduced the coefficient of refrigerating performance (cop) of refrigeration machine.
So chiller plant generally is arranged in ground at present, can select common refrigeration machine for use on ground, coefficient of refrigerating performance is high, reduces the power consumption that freezes, and operational management and maintenance of equipment are convenient, and the cold conveying has cold wind conveying-type, cold water conveying-type, ice conveying-type.The deficiency of above-mentioned three kinds of cold mode of movement system layout forms and existence is:
1, cold wind conveying-type:
Cold wind conveying-type system layout form is: will freeze wind devices and air cooler are arranged in ground, with airduct cold wind are delivered to the downhole cooling operating point.The deficiency that exists, the one, because air quantity and airduct are oversize, there is the higher deficiency of inconvenient installation and conveying energy consumption; The 2nd, loss of refrigeration capacity is big, and cooling-down effect is poor; The 3rd, the wind that is transported to the down-hole need lean on the mine fan extraction to aboveground, has increased the mine fan power consumption.
2, ice conveying-type:
Ice conveying-type system layout form is: ice making equipment is arranged in ground; The ice that produce on ground is delivered to the downhole cooling operating point with defeated ice pipeline; The cooling of absorption heat, the deficiency of existence, the one, come ice making owing to need refrigeration machine to reduce evaporating temperature (being lower than-5 ℃); So reduced the coefficient of refrigerating performance (COP) of refrigeration machine, had ice making, defeated ice system equipment complicacy; The 2nd, trash ice be prone to stop up the deficiency of defeated ice pipeline in course of conveying, and the 3rd, the ice that is transported to the down-hole dissolves into and needs be discharged to water pump behind the water aboveground, causes water waste, has improved the cooling cost greatly.
3, cold water conveying-type:
Cold water conveying-type system layout form is: at ground configuration chilled water equipment and heat exchanger; In the downhole cooling operating point air cooler is set; The aboveground cold water of producing is connected through cool water circulating pipe road and air cooler; Cold water circulation makes air cooler distribute cold air, gets into chilled water equipment after the water that comes out from air cooler returns the heat exchanger heat exchange, compares cold wind and carries and can reduce pipe diameter.But not enough below also existing: the one, because in the mine vertical tube of cold water pipes more than depth 800m, hydrostatic pressure is excessive, conventional pipeline is difficult to bear; The 2nd, because hydrostatic pressure is excessive, special high-low pressure converter or high pressure heat exchanger need be set, this kind equipment mainly is fixed against external import, expensive; So this mode is inadvisable, can not large tracts of land promote.The 3rd, cold water needs high-pressure hydraulic pump to circulate in cyclic process, has increased the cooling cost.
Summary of the invention
The objective of the invention is to overcome the defeated cooling system of existing mine air conditioner and have energy consumption height, cooling-down effect difference and the higher technological deficiency of cost, defeated cooling system of a kind of new mine air conditioner and method are provided.
For realizing above-mentioned purpose, technical scheme that the present invention takes and operating principle thereof:
A kind of mine air conditioner is failed cooling system, and it comprises chiller plant, heat exchanger and air cooler, it is characterized in that, described chiller plant is arranged in ground, and heat exchanger is arranged in the down-hole, and air cooler is arranged in the downhole cooling operating point; The evaporimeter of ground chiller plant and down-hole heat exchanger are filled with cold-producing medium through the circulating system of a sealing of pipeline formation in the circulating system, be called refrigerant-cycle systems; Down-hole heat exchanger and air cooler are filled with cold water through the circulating system of a pipeline and a sealing of circulation pump formation in the circulating system, be called the cold water circulating system.
Preferred freon of above-mentioned cold-producing medium and ammonia.
The method of work of this system is: open the ground chiller plant; Cold-producing medium gets into down-hole heat exchanger tube side through cold-producing medium process pipeline, carry out cold and hot exchange generation liquid-gas phase with cold water in the heat exchanger shell pass and become, thereby evaporation becomes gaseous state; Gaseous refrigerant is under the evaporating pressure effect; In the cold-producing medium return conduits rises to the evaporimeter of ground chiller plant automatically, issue anger-liquid phase at the refrigeration of chiller plant and become and be liquid refrigerant, liquid refrigerant under action of gravity, carry cold through cold-producing medium process line transportation to the down-hole heat exchanger; Again be evaporated to gaseous refrigerant, circulate with this and realize that cold is to down-hole heat exchanger automatic transport; Open the down-hole cold water circulation pump simultaneously, heat exchanger cold water is transported to air cooler, circulate the cooling that realizes the operating point with this.
The present invention has the following advantages owing to take above technical scheme:
1, realizes the cold conveying owing to adopt cold-producing medium to circulate; The cold transmission relies on the cold-producing medium phase transition process; Its cold conveying capacity of the cold-producing medium of unit mass flow is much larger than the mode of movement of cold wind, cold water; Therefore when carrying identical cold, the cold-producing medium circular flow is much smaller than the flow of cold wind and cold water, and the liquid refrigerant pipe diameter is much smaller than the cold water caliber.
2, because liquid refrigerant relies on action of gravity to flow to the down-hole heat exchanger by ground chiller plant evaporimeter, and gaseous refrigerant is that evaporating pressure is poor by the power that the down-hole heat exchanger flows to ground simultaneously, need not other power-equipment, the cooling cost reduces greatly.
3, because heat exchanger is arranged on the down-hole, shortened the distance through the cold water conveying of cold, reduced the power consumption of cold conveyance loss and cold water circulation pump, improved the cold transfer efficiency, thereby improved cooling-down effect.
4, because the caliber of liquid refrigerant pipeline is thin, caliber is more little under equal wall thickness and the tubing, and its anti-pressure ability is strong more; In addition, visual refrigerant flow size is made the liquid refrigerant pipeline in the littler pipeline of many calibers of parallel connection; Overcome hydrostatic pressure in the liquid refrigerant pipeline with this, heat exchanger selects for use common heat exchanger to get final product like this, and special high-low pressure converter or high pressure heat exchanger need be set; Expense reduces greatly, is easy to large tracts of land and promotes.
5, because down-hole heat exchanger inner refrigerant flow is little, can adopt the little copper pipe of caliber, the wall thickness that suitably adds large copper pipe can overcome the effect of liquid refrigerant hydrostatic pressure, and heat exchanger adopts copper pipe to improve thermal transmittance.
6, the cold-producing medium that is adopted among the present invention can be freon or ammonia, wide adaptability.
The present invention can be widely used in the cooling in other mines as a kind of novel defeated cooling system.
Description of drawings
Fig. 1 is a system drawing of the present invention.
Among the figure: 1-liquid refrigerant pipeline, 2-gaseous refrigerant pipeline, 3-chiller plant, 4-heat exchanger, 5-cold water circulation pump, 6-cool water circulating pipe road, 7-air cooler.
The specific embodiment
As shown in Figure 1, a kind of mine air conditioner is failed cooling system, is in ground configuration chiller plant 3 to be arranged, and is furnished with heat exchanger 4 in the down-hole, is furnished with air cooler 7 in the downhole cooling operating point; Wherein, Heat exchanger 7 one side flow cold-producing mediums, the mobile cold water of opposite side; Be communicated with gaseous refrigerant pipeline 2 between the refrigerant outlet of the evaporator inlet of ground chiller plant 3 and down-hole heat exchanger 4; Be communicated with liquid refrigerant pipeline 1 between the refrigerant inlet of the evaporator outlet of ground chiller plant 3 and down-hole heat exchanger 4, thereby constitute the pipe-line system of a sealing, and in this pipe-line system, fill a certain amount of liquid refrigerant; The cold water side of down-hole heat exchanger 4 is communicated with through cool water circulating pipe road 6 with the air cooler 7 of downhole cooling operating point, and on circulating line 6, is serially connected with cold water circulation pump 5, thereby realizes that cold water circulates in air cooler 4, makes the downhole cooling operating point obtain cooling.
The method of work of this system is: open ground chiller plant 3; Heat exchanger 4 carries out interchange of heat generation liquid-gas phase change to liquid refrigerant in the down-hole; Thereby evaporation becomes gaseous state; Under the evaporating pressure effect of gaseous refrigerant in down-hole heat exchanger 4, in gaseous refrigerant pipeline 2 rose to the evaporimeter of ground chiller plant 3 automatically, gaseous refrigerant issued anger-liquid phase change at the refrigeration of chiller plant; Absorb cold and be condensed into liquid refrigerant; Liquid refrigerant carries cold and is delivered to down-hole heat exchanger 4 through liquid refrigerant pipeline 1 by deadweight under action of gravity, be evaporated to gaseous refrigerant again, circulates with this and realizes that cold is to down-hole heat exchanger 4 automatic transport; Open down-hole cold water circulation pump 5 simultaneously, heat exchanger 4 cold water are transported to air cooler 7, circulate the cooling that realizes the operating point with this.
Claims (3)
1. a mine air conditioner is failed cooling system, and it comprises chiller plant, heat exchanger and air cooler, it is characterized in that, described chiller plant is arranged in ground, and heat exchanger is arranged in the down-hole, and air cooler is arranged in the downhole cooling operating point; The evaporimeter of ground chiller plant and down-hole heat exchanger are filled with cold-producing medium through the circulating system of a sealing of pipeline formation in the circulating system, be called refrigerant-cycle systems; Down-hole heat exchanger and air cooler are filled with cold water through the circulating system of a pipeline and a sealing of circulation pump formation in the circulating system, be called the cold water circulating system.
2. mine air conditioner as claimed in claim 1 is failed cooling system, it is characterized in that, cold-producing medium is freon or ammonia.
3. the method for work of the defeated cooling system of a mine air conditioner according to claim 1 or claim 2; It is characterized in that, at first open the ground chiller plant, cold-producing medium gets into down-hole heat exchanger tube side through cold-producing medium process pipeline; Carry out cold and hot exchange generation liquid-gas phase change with the cold water in the heat exchanger shell pass; Thereby evaporation becomes gaseous state, and gaseous refrigerant is under the evaporating pressure effect, in the cold-producing medium return conduits rises to the evaporimeter of ground chiller plant automatically; Issuing anger-liquid phase at the refrigeration of chiller plant becomes and is liquid refrigerant; Liquid refrigerant under action of gravity, carry cold through cold-producing medium process line transportation to the down-hole heat exchanger, be evaporated to gaseous refrigerant again, circulate with this and realize that cold is to down-hole heat exchanger automatic transport; Open the down-hole cold water circulation pump simultaneously, heat exchanger cold water is transported to air cooler, circulate the cooling that realizes the operating point with this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012100487333A CN102536297A (en) | 2012-02-20 | 2012-02-20 | Cold conveying system of mine air-conditioning and working method of cold conveying system |
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| CN2012100487333A CN102536297A (en) | 2012-02-20 | 2012-02-20 | Cold conveying system of mine air-conditioning and working method of cold conveying system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306705A (en) * | 2013-06-13 | 2013-09-18 | 中国科学院工程热物理研究所 | Refrigeration system for mine cooling |
| CN104005784A (en) * | 2014-06-12 | 2014-08-27 | 中煤科工集团重庆研究院有限公司 | Cold and hot water pressure exchange system applied to deep heat damage mine |
| CN104314602A (en) * | 2014-08-15 | 2015-01-28 | 张惠忠 | Underground comprehensive refrigerating method |
| CN107366547A (en) * | 2016-05-13 | 2017-11-21 | 中国矿业大学(北京) | A kind of high-temperature mine air intake crossheading air cooling facility optimization placement method |
| CN111322103A (en) * | 2020-05-12 | 2020-06-23 | 山东澳神热泵空调有限公司 | Mine air conditioner cold conveying system convenient to maintain |
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| CN102182491A (en) * | 2011-03-21 | 2011-09-14 | 山东新巨龙能源有限责任公司 | Construction method of cooling water circulation system of underground concentrated cooling unit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103306705A (en) * | 2013-06-13 | 2013-09-18 | 中国科学院工程热物理研究所 | Refrigeration system for mine cooling |
| CN103306705B (en) * | 2013-06-13 | 2016-05-18 | 中国科学院工程热物理研究所 | Mine cooling refrigeration system |
| CN104005784A (en) * | 2014-06-12 | 2014-08-27 | 中煤科工集团重庆研究院有限公司 | Cold and hot water pressure exchange system applied to deep heat damage mine |
| CN104314602A (en) * | 2014-08-15 | 2015-01-28 | 张惠忠 | Underground comprehensive refrigerating method |
| CN107366547A (en) * | 2016-05-13 | 2017-11-21 | 中国矿业大学(北京) | A kind of high-temperature mine air intake crossheading air cooling facility optimization placement method |
| CN111322103A (en) * | 2020-05-12 | 2020-06-23 | 山东澳神热泵空调有限公司 | Mine air conditioner cold conveying system convenient to maintain |
| CN111322103B (en) * | 2020-05-12 | 2021-06-04 | 山东澳神热泵空调有限公司 | Mine air conditioner cold conveying system convenient to maintain |
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Application publication date: 20120704 |