CN103306705B - Mine cooling refrigeration system - Google Patents
Mine cooling refrigeration system Download PDFInfo
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- CN103306705B CN103306705B CN201310232840.6A CN201310232840A CN103306705B CN 103306705 B CN103306705 B CN 103306705B CN 201310232840 A CN201310232840 A CN 201310232840A CN 103306705 B CN103306705 B CN 103306705B
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Abstract
A kind of mine cooling refrigeration system, comprise: compressor (1) connects condenser (2) and is arranged on aboveground, the evaporimeter (4) that compressor (1) and condenser (2) are mounted on down-hole by restricting element (3) connects and composes cooling cycle system, in this cooling cycle system, is filled with cold-producing medium; Condenser (2) is connected to form cooling water recirculation system by cooling water circulating pump (6) and enclosed heat exchanger (5) by pipeline, in this cooling water recirculation system, is filled with cooling water; Evaporimeter (4) forms the chilled water circulatory system by chilled water circulating pump (7) shape that is connected with air cooler, in this chilled water circulatory system, is filled with chilled water.
Description
Technical field
The evaporimeter that the present invention relates to a mine cooling refrigeration system, particularly refrigeration system is placed in ore depositWell down-hole, all the other refrigeration parts such as compressor, condenser, cooling device are positioned at grass, by carefullyLong tube replaces the mine cooling refrigeration system of expansion valve.
Background technology
Along with mine (colliery, metallurgical ore deposit) is adopted improving constantly of dark increase and Mechanion degree,The high warm evil of mine has become one of significant problem of restriction downhole safety exploitation, and relevant expert thinksThe limit mining depth in following mine will depend on the development level of mine cooling technology and equipment. High temperatureHigh humidity environment has not only seriously endangered the healthy of human body, and the moment is threatening produce normalCarry out. Because human body is in thermal environment, central nervous system is suppressed, and makes dispersion attention, fallsLow accuracy of action and harmony. Hot and humid environment easily makes workman in drowsyState, and easily have the fidgets in the psychology of workers, heavy manual labor added, workman's alert abilityReduce, thereby make the incidence of accident increase. Must adopt mine artificial cooling falling temperature technique for this reasonDown-hole hot and humid environment is controlled, to eliminate underground thermal pollution.
At present, mine artificial cooling cooling system can be divided into according to the installation site of refrigeration unit:
1) refrigeration unit is arranged on ground;
2) refrigeration unit is arranged on down-hole;
3) three kinds of forms such as refrigeration unit are installed in ground and down-hole simultaneously.
When refrigeration unit is arranged on down-hole, need to excavate special main equipment chamber, refrigeration plant mustMust meet the high requirement of downhole anti-explosion standard, facility compact and reliability, and ordinary skill maturationRefrigeration unit cannot meet these requirements, to be positioned over down-hole key issue be condensation to refrigeration unit in additionHot type, except not smooth, has greatly reduced the coefficient of refrigerating performance (COP) of refrigeration machine. Refrigeration unit is installed on groundFace can be selected common refrigeration machine, and operational management and maintenance of equipment are convenient, but due to ground refrigeration unitFar away apart from air-conditioning temperature-reducing operating point, down-hole, carry and brought difficulty to cold, and in cold course of conveyingLoss amount is large.
Summary of the invention
The object of the present invention is to provide a kind of mine cooling refrigeration system.
Another object of the present invention is to provide a kind of user of above-mentioned mine cooling refrigeration systemMethod.
For achieving the above object, mine cooling refrigeration system provided by the invention, comprising:
Compressor (1) connection condenser (2) is arranged on aboveground, compressor (1) and condenser (2)The evaporimeter (4) that is mounted on down-hole by restricting element (3) and pipeline (8) connects and composesCooling cycle system, is filled with cold-producing medium in this cooling cycle system;
Condenser (2) is connected by pipeline with enclosed heat exchanger (5) by cooling water circulating pump (6)Connect formation cooling water recirculation system, in this cooling water recirculation system, be filled with cooling water;
Evaporimeter (4) by chilled water circulating pump (7) be connected with air cooler shape form chilled water followLoop systems, is filled with chilled water in this chilled water circulatory system.
Described mine cooling refrigeration system, wherein, cold-producing medium is R717.
Described mine cooling refrigeration system, wherein, enclosed heat exchanger (5) connects mine drainage.
Described mine cooling refrigeration system, wherein, evaporimeter (4) and condenser (2) are all adoptedWith plate type heat exchanger, compressor (1) is screw, and restricting element (3) is elongated tubular.
Described mine cooling refrigeration system, wherein, the refrigerant tubing that is positioned at well be steel pipe orPerson's plastic tube.
Described mine cooling refrigeration system, wherein chilled water circulating pump (7) and air cooler are for anti-Quick-fried equipment.
Mine cooling of the present invention is that cold-producing medium R717 is by compressor by the using method of refrigeration systemThe interior compressed high temperature and high pressure gaseous refrigerant that becomes, enters condenser via refrigerant tubing, in condensationThe water cooling that is cooled in device becomes the liquid cold-producing medium of HTHP, and the liquid cold-producing medium of HTHP is by condensationDevice outlet enters the evaporimeter of down-hole via the elongated tubular that is positioned at mine return air vertical cylinder, in throttling unitUnder the drag effect of part, the liquid refrigerant that cold-producing medium becomes low-temp low-pressure evaporates in evaporimeter, inhalesThe heat of receiving in chilled water is realized refrigeration, changes the gaseous refrigerant of low-temp low-pressure into;
The gaseous refrigerant of low-temp low-pressure is entered and is positioned at mine return air vertical cylinder by down-hole evaporator outletIn pipeline, under the effect of gaseous refrigerant self steam pressure by force feed in aboveground compressor, heavyNewly compressed, form successively kind of refrigeration cycle.
The present invention has the following advantages:
1) the present invention's main refrigeration part except evaporimeter is positioned over abovegroundly, is not therefore subject to downhole anti-explosionThe restriction requiring, can select common refrigeration part.
2) evaporimeter of the present invention is positioned over down-hole, and evaporimeter and aboveground condenser, compressor are by positionPipeline in shaft of vertical well connects, and ground cold can be realized mode based on gravity assisted heat pipe principle to wellLower conveying, without consuming other power.
3) between the aboveground condenser of the present invention and down-hole evaporimeter, be connected by the elongated tubular in vertical cylinderConnect, due to vertical mine shaft depth large (can exceed 1000 meters), therefore cold-producing medium flows through this part elongated tubularResistance is large, and the alternative expansion valve of elongated tubular is realized the reducing pressure by regulating flow of cold-producing medium, and (its principle is with family expenses skyCapillary in tune).
4) between down-hole of the present invention evaporimeter and aboveground compressor, pass through the gas refrigerant in vertical cylinderPipeline is connected, and cold-producing medium adopts R717, and because R717 vapour density is little, it is at shaft of vertical well gasVertical gas column pressure in cryogen pipeline is little, therefore can be by controlling refrigeration in caliber and evaporimeterThe evaporating pressure of agent, realizes the evaporating pressure effect that only relies on cold-producing medium, and gaseous refrigerant is transmitted back toIn aboveground compressor, (when other cold-producing medium gaseous states, density is bigger than normal, and corresponding height gas column pressure is excessive, singleEvaporating pressure by evaporimeter inner refrigerant is difficult to cold-producing medium to be transmitted back in aboveground compressor).
5) the present invention utilizes the cooling cooling water of mine drainage, utilizes outdoor air cold with conventionalBut cooling water is compared, and because mine drainage temperature is low, can improve the coefficient of refrigerating performance (COP) of refrigeration system.
6) condenser of the present invention and evaporimeter all adopt plate type heat exchanger, can reduce cold-producing medium R717'sCharging amount.
7) refrigerant tubing that the present invention is positioned at shaft of vertical well can adopt steel pipe or plastic tube.
The present invention, as a kind of novel refrigeration system, can be widely used in type pit cooling system and (compriseColliery and metallurgical ore deposit).
Brief description of the drawings
Fig. 1 is schematic diagram of the present invention.
In figure: 1 compressor, 2 condensers, 3 restricting elements (elongated tubular), 4 evaporimeters, 5 enclosedsHeat exchanger, 6 cooling water circulating pumps, 7 chilled water circulating pumps, 8 pipelines.
Detailed description of the invention
Refrigeration system provided by the invention can realize ground refrigeration and defeated cold to underground high-efficient simultaneously.
The technical scheme that the present invention takes and operation principle thereof:
One mine cooling refrigeration system, capital equipment (except evaporimeter) is positioned over aboveground, return airChamber is set to place evaporimeter and the preparation of down-hole chilled water and recycle unit near shaft of vertical well; RefrigerationAdopt the steam compression type refrigeration circulatory system, cold-producing medium R717, evaporimeter and condenser all adopt plateFormula heat exchanger, compressor adopts screw, and restricting element is elongated tubular; Utilize mine drainage coolingCooling water.
Its operation principle is: cold-producing medium R717 is the compressed HTHP gas that becomes in aboveground compressorState cold-producing medium, enters aboveground condenser via pipeline, and the water cooling that is cooled in condenser becomes high temperatureHigh pressure liquid refrigerant, the liquid cold-producing medium of HTHP is returned via being positioned at mine by aboveground condensator outletElongated tubular in wind vertical cylinder enters down-hole evaporimeter, and under the drag effect of elongated tubular, cold-producing medium becomesFor the liquid refrigerant of low-temp low-pressure, the liquid refrigerant of low-temp low-pressure evaporates in evaporimeter, absorbsHeat in chilled water (realizing refrigeration), becomes the gaseous refrigerant of low-temp low-pressure, gaseous refrigerantEntered the pipeline that is positioned at mine return air vertical cylinder by down-hole evaporator outlet, at gaseous refrigerant selfUnder steam pressure effect by force feed in aboveground compressor, again compressed, form successively kind of refrigeration cycle.
Be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the present invention is a mine cooling refrigeration system, comprises compressor 1, condensationDevice 2, restricting element (elongated tubular) 3, evaporimeter 4, enclosed heat exchanger 5, cooling water circulating pump 6,Chilled water circulating pump 7 and pipeline 8. Wherein compressor 1, condenser 2, elongated tubular 3, evaporimeter 4Be connected and form the system of a sealing via pipeline 8, and be filled with cold-producing medium R717, form refrigerationThe circulatory system; Condenser 2, cooling water circulating pump 6 are connected with enclosed heat exchanger 5 and form a sealingSystem, and be filled with cooling water, form cooling water recirculation system; Down-hole evaporimeter 4, chilled water followRing pump 7 is connected and is formed into a closed system with air cooler, and is filled with chilled water, forms chilled waterThe circulatory system.
In the embodiment of the present invention, except the chilled water circulating pump 7 and air cooler of down-hole, all the other all adopt generalLogical equipment (to explosion-proof no requirement (NR)).
When the present invention works, in cooling cycle system, cold-producing medium R717 is under compressor 1 compressionBecome the gaseous refrigerant of HTHP, the gaseous refrigerant of HTHP enters condensation via pipeline 8Device 2, in the condenser 2 inner refrigerants water cooling that is cooled, becomes the liquid cold-producing medium of HTHP, heightThe liquid refrigerant of temperature high pressure enters elongated tubular 3, and under elongated tubular 3 throttling actions, cold-producing medium becomesThe liquid state of low-temp low-pressure, the liquid refrigerant of low-temp low-pressure enters evaporimeter 4, in the interior system of evaporimeter 4Cryogen is vaporized, and the heat in absorption refrigerating water is realized the refrigeration cool-down of chilled water, and cold-producing medium becomesFor the gaseous state of low-temp low-pressure, under evaporating pressure effect, gaseous refrigerant is through shaft of vertical well interior conduit8 are transferred back compressor 1, again compressed, form kind of refrigeration cycle. In cooling water recirculation system,Under the effect of cooling water circulating pump 6, cooling water flows to enclosed heat exchanger 5, at enclosed heat exchanger 5In, cooling water with carry out heat exchange from the mine drainage of down-hole, self temperature reduces, after temperature reducesCooling water be delivered to condenser 2, at the heat temperature liter of the interior cooling water absorption refrigeration of condenser 2 agentHeight, then have cooling water circulating pump 6 to be delivered to enclosed heat exchanger 5, form cooling water circulation. Chilled waterIn the circulatory system, the chilled water flowing back to from air cooler, under the effect of cold water circulation pump 7, enters evaporationDevice 4, evaporimeter 4 interior cooled dose absorb heat, self-temperature reduce, temperature reduce after coldFreeze water and be transported to air cooler, the Hot wet air heating in air cooler under cooling shaft, self temperature raises,Again be transported to evaporimeter 4 via chilled water circulating pump 7, form chilled water circulation.
The above embodiment of the present invention is only for technical scheme of the present invention is described, it should not limit thisThe protection domain of invention, if the equivalent transformation that the technical scheme of the various embodiments described above is made all should belong toIn protection scope of the present invention.
Claims (7)
1. a mine cooling refrigeration system, comprising:
Compressor (1) connection condenser (2) is arranged on aboveground, compressor (1) and condenser (2)The evaporimeter (4) that is mounted on down-hole by restricting element (3) and pipeline (8) connects and composesCooling cycle system, is filled with cold-producing medium in this cooling cycle system;
Condenser (2) is connected by pipeline with enclosed heat exchanger (5) by cooling water circulating pump (6)Connect formation cooling water recirculation system, in this cooling water recirculation system, be filled with cooling water;
Evaporimeter (4) by chilled water circulating pump (7) be connected with air cooler shape form chilled water followLoop systems, is filled with chilled water in this chilled water circulatory system;
Wherein, described restricting element (3) is elongated tubular.
2. mine cooling refrigeration system according to claim 1, wherein, cold-producing medium is R717.
3. mine cooling refrigeration system according to claim 1, wherein, enclosed heat exchanger(5) connect mine drainage.
4. mine cooling refrigeration system according to claim 1, wherein, evaporimeter (4)And condenser (2) all adopts plate type heat exchanger, compressor (1) is screw.
5. mine cooling refrigeration system according to claim 1, wherein, is positioned at wellRefrigerant tubing is steel pipe or plastic tube.
6. mine cooling refrigeration system according to claim 1, wherein chilled water circulating pump(7) and air cooler be antiknock device.
7. a using method for refrigeration system for mine cooling as claimed in claim 1, comprisesFollowing steps:
Gaseous refrigerant R717 is the compressed high temperature and high pressure gaseous refrigerant that becomes in compressor, viaRefrigerant tubing enters condenser, and the water cooling that is cooled in condenser becomes cryogenic high pressure liquid refrigerationAgent, the liquid cold-producing medium of HTHP by condensator outlet via being positioned at the elongated of mine return air vertical cylinderPipe enters the evaporimeter of down-hole, and under the drag effect of restricting element, cold-producing medium becomes low-temp low-pressureLiquid refrigerant evaporates in evaporimeter, and the heat in absorption refrigerating water is realized refrigeration, changes low temperature intoThe gaseous refrigerant of low pressure;
The gaseous refrigerant of low-temp low-pressure is entered and is positioned at mine return air vertical cylinder by down-hole evaporator outletIn pipeline, under the effect of gaseous refrigerant self steam pressure by force feed in aboveground compressor, heavyNewly compressed, form successively kind of refrigeration cycle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310232840.6A CN103306705B (en) | 2013-06-13 | 2013-06-13 | Mine cooling refrigeration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310232840.6A CN103306705B (en) | 2013-06-13 | 2013-06-13 | Mine cooling refrigeration system |
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| CN103306705A CN103306705A (en) | 2013-09-18 |
| CN103306705B true CN103306705B (en) | 2016-05-18 |
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| CN104213931B (en) * | 2014-09-17 | 2016-03-23 | 济南国海能源科技有限公司 | A kind of mine ventilation cooling and bootstrap system |
| 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 |
| CN105649668B (en) * | 2016-04-03 | 2018-02-09 | 河南理工大学 | Lane side shutoff type mine cooling method and cooling system |
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| CN107905839A (en) * | 2017-12-27 | 2018-04-13 | 湖南中大经纬地热开发科技有限公司 | A kind of Mine Drainage System with heat exchange function |
| CN109209466A (en) * | 2018-11-19 | 2019-01-15 | 中铁二局集团有限公司 | A kind of shield tunnel construction cooling device and cool-down method |
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| CN112049678A (en) * | 2020-09-22 | 2020-12-08 | 山东澳神热泵空调有限公司 | Water-burst cooling cold-carrying air conditioning system for mine |
| CN113251232B (en) * | 2021-06-29 | 2021-11-12 | 中国石油天然气股份有限公司西南油气田分公司勘探开发研究院 | Gas storage wellhead throttling device |
| CN113565556B (en) * | 2021-07-30 | 2022-02-15 | 中国矿业大学(北京) | Underground air compression type direct cooling device |
| CN114111078A (en) * | 2021-11-12 | 2022-03-01 | 探坤能源环境科技有限公司 | Ultra-large 10-megawatt-level transcritical carbon dioxide deep mine refrigeration device and refrigeration method |
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Effective date of registration: 20201202 Address after: No.56, Huanghai Avenue, Lianyungang Economic and Technological Development Zone, Lianyungang City, Jiangsu Province 222000 Patentee after: JIANGSU CHINESE ACADEMY OF SCIENCES ENERGY POWER RESEARCH CENTER Patentee after: Institute of Engineering Thermophysics, Chinese Academy of Sciences Address before: 100190, No. 11 West Fourth Ring Road, Beijing, Haidian District Patentee before: Institute of Engineering Thermophysics, Chinese Academy of Sciences |
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