CN102966366B - Mining cold storage and carbon dioxide coupled refrigeration system and method - Google Patents
Mining cold storage and carbon dioxide coupled refrigeration system and method Download PDFInfo
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- CN102966366B CN102966366B CN201210511889.0A CN201210511889A CN102966366B CN 102966366 B CN102966366 B CN 102966366B CN 201210511889 A CN201210511889 A CN 201210511889A CN 102966366 B CN102966366 B CN 102966366B
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 228
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 114
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 114
- 238000005057 refrigeration Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005065 mining Methods 0.000 title claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims description 29
- 239000003507 refrigerant Substances 0.000 abstract description 3
- 238000009825 accumulation Methods 0.000 abstract 1
- 239000002775 capsule Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
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Abstract
The invention discloses a mining cold storage and carbon dioxide coupled refrigeration system and a method, comprising a carbon dioxide steel cylinder, a carbon dioxide busbar, a stop valve, a three-way reversing valve, a cold storage tank, a first section of cooling pipeline, a one-way valve, a first-stage throttle valve, a first-stage evaporator, a second section of cooling pipeline, a second-stage throttle valve, a second-stage evaporator and a pneumatic fan; the system adopts a mode of combining carbon dioxide open refrigeration and cold accumulation, reduces the consumption of carbon dioxide refrigerant, thereby reducing the size of a closed space; the cold storage box is arranged, so that the heat transfer and flow characteristics of the secondary evaporator are improved, the throttling efficiency of the primary throttling valve is improved, and the flow resistance is greatly improved.
Description
Technical field
The present invention relates to a kind of refrigeration system and method, particularly a kind of carbon dioxide refrigerating system and method.
Background technology
Along with the progress and development of science and technology and the raising to people's life rights and interests consciousness, as the protection facility to people's life after disaster and contingency occur, emergency hedge system has become the problem that state key is paid close attention to.The emergency hedge system of coal mine mainly contains refuge chamber or survival capsule, escape when it is in danger for mine operation personnel, take refuge and wait for rescue, certain environmental Kuznets Curves function must be possessed to meet the survivability requirement of hedging personnel, as the refrigeration system of environmental control system important component part, the temperature that its reliability is directly connected to refuge chamber or survival capsule confined space regulates and air purification.Owing to not needing power supply, the requirement of explosion proof of mine harshness can be met, open carbon dioxide refrigerating system becomes the first-selection of refuge chamber and rescue capsule refrigerating mode, as patent 201110043150.7 has described a kind of the non-electric type air conditioning purifier integrating refrigeration purification and method of high-pressure refrigerant driving in detail.But in actual applications, the equipment compartment that the refrigeration system that high-pressure refrigerant drives deposits high-pressure carbon dioxide is relatively large; When mine internal temperature is higher than 31.1 DEG C, the efficiency comparison of one-level choke valve is low, influential system efficiency; Meanwhile, the efficiency that the middle temperature low pressure CO 2 before two-step throttle enters two-step throttle is also lower.These problems all directly have impact on the reliability and stability of system, therefore urgently improve existing open carbon dioxide refrigerating system.
Summary of the invention
In view of this, the object of this invention is to provide a kind of mining cold-storage and carbon dioxide manifold type refrigeration system and method, overcome prior art in environment temperature higher than the lower defect of refrigerating efficiency when 31.1 DEG C, reduce the size in the equipment compartment space of carbon dioxide simultaneously.
The object of the invention is to be achieved through the following technical solutions:
A kind of mining cold-storage and carbon dioxide manifold type refrigeration system, comprise carbon dioxide steel cylinder, carbon dioxide bus-bar, stop valve, three-way diverter valve, cold-accumulating box, first paragraph cooling pipe, one way valve, one-level choke valve, one-level evaporimeter, second segment cooling pipe, two-step throttle valve, secondary evaporimeter and pneumatic fan;
The gas outlet of described carbon dioxide steel cylinder is connected with carbon dioxide bus-bar air inlet port, the gas outlet of described carbon dioxide bus-bar is connected with stop valve air inlet port, described stop valve gas outlet is connected with the first end of three-way diverter valve, second end of described three-way diverter valve is connected with the entrance of first paragraph cooling pipe, the described outlet of first paragraph cooling pipe is connected with the entrance of one way valve, the outlet of described one way valve is divided into two-way, one tunnel is connected with the 3rd end of three-way diverter valve, another road is connected with the entrance of one-level choke valve, the outlet of described one-level choke valve is connected with the entrance of one-level evaporimeter, the outlet of described one-level evaporimeter is connected with the entrance of second segment cooling pipe, the outlet of described second segment cooling pipe is connected with the entrance of two-step throttle valve, the described outlet of two-step throttle valve is connected with the entrance of secondary evaporimeter, the outlet of described secondary evaporimeter is connected with pneumatic fan air inlet port, gas outlet and the confined space of described pneumatic fan are interlinked to the outside,
Described first paragraph cooling pipe and second segment cooling pipe are positioned at cold-accumulating box;
Further, described one-level evaporimeter and secondary evaporimeter are capillary type evaporimeter; Described one-level choke valve and two-step throttle valve are capillary type choke valve;
Further, the refrigerating method of a kind of mining cold-storage and carbon dioxide manifold type refrigeration system, comprises following process:
When the temperature in mine is higher than 31.1 DEG C, first end and second end of described three-way diverter valve communicate; High normal pressure and temperature carbon dioxide in described carbon dioxide steel cylinder, through the precooling of first paragraph cooling pipe, becomes the carbon dioxide liquid of high pressure low temperature; The carbon dioxide liquid of described high pressure low temperature, after one-level choke valve, forces down the carbon dioxide liquid of temperature in becoming; The carbon dioxide liquid forcing down temperature in described, by after air heat exchanges in one-level evaporimeter and cabin, becomes the carbon dioxide of middle normal pressure and temperature; The carbon dioxide of described middle normal pressure and temperature, after the further precooling of second segment cooling pipe, forces down the carbon dioxide liquid of temperature in becoming; The carbon dioxide liquid forcing down temperature in described, after two-step throttle valve, becomes the carbon dioxide of low-pressure low-temperature; The carbon dioxide of described low-pressure low-temperature, by after gas realizes exchange heat in secondary evaporimeter and cabin, becomes the carbon dioxide of low normal pressure and temperature; Discharge out of my cabin after the carbon dioxide driving pneumatic fan of described low normal pressure and temperature; Described pneumatic fan drives gas and one-level evaporimeter and secondary evaporimeter in cabin to carry out exchange heat;
When the temperature in mine is lower than 31.1 DEG C, the 3rd end of described three-way diverter valve, first end communicate; Normal pressure and temperature carbon dioxide during high normal pressure and temperature carbon dioxide liquid in described carbon dioxide steel cylinder becomes after directly entering one-level choke valve; Warm carbon dioxide liquid is forced down in becoming after described middle normal pressure and temperature carbon dioxide enters the precooling of second segment cooling pipe quickly through one-level evaporimeter; Force down warm carbon dioxide liquid in described and become low-pressure low-temperature carbon dioxide after two-step throttle valve; Described low-pressure low-temperature carbon dioxide becomes low normal pressure and temperature carbon dioxide by gas in secondary evaporimeter and cabin after realizing exchange heat; Described low normal pressure and temperature carbon dioxide is discharged out of my cabin after driving pneumatic fan; Described pneumatic fan drives gas and one-level evaporimeter and secondary evaporimeter in cabin to carry out exchange heat.
The invention has the beneficial effects as follows:
When mining cold-storage and carbon dioxide manifold type refrigeration system are run, highly pressurised liquid in carbon dioxide steel cylinder is successively through one-level choke valve, one-level evaporimeter, two-step throttle valve and secondary evaporimeter, by second throttle and two-stage cooling, achieve the matched well of pressure drop distribution and cryogenic temperature, this system, compared with existing mine escape capsule refrigeration system, has the outstanding advantages such as good refrigeration effect, efficiency is high, reliability is high; Owing to arranging cold-accumulating box before one-level choke valve and two-step throttle valve, the carbon dioxide before throttling is carried out precooling and not only increases throttle efficiency, the size of the quantity of dioxide bottle thus the equipment compartment of minimizing carbon dioxide can be reduced simultaneously.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or can be instructed from the practice of the present invention.Target of the present invention and other advantages can be realized by manual below and obtain.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.Should be appreciated that preferred embodiment only in order to the present invention is described, instead of in order to limit the scope of the invention.
As shown in the figure, a kind of mining cold-storage and carbon dioxide manifold type refrigeration system, comprise carbon dioxide steel cylinder 1, carbon dioxide bus-bar 2, stop valve 3, three-way diverter valve 4, cold-accumulating box 7, first paragraph cooling pipe 12, one way valve 11, one-level choke valve 5, one-level evaporimeter 6, second segment cooling pipe 13, two-step throttle valve 8, secondary evaporimeter 9 and pneumatic fan 10;
The gas outlet of described carbon dioxide steel cylinder 1 is connected with carbon dioxide bus-bar 2 air inlet port, the gas outlet of described carbon dioxide bus-bar 2 is connected with stop valve 3 air inlet port, described stop valve 3 gas outlet is connected with the first end of three-way diverter valve 4, second end of described three-way diverter valve 4 is connected with the entrance of first paragraph cooling pipe 12, the outlet of described first paragraph cooling pipe 12 is connected with the entrance of one way valve 11, the outlet of described one way valve 11 is divided into two-way, one tunnel is connected with the 3rd end of three-way diverter valve 4, another road is connected with the entrance of one-level choke valve 5, the outlet of described one-level choke valve 5 is connected with the entrance of one-level evaporimeter 6, the outlet of described one-level evaporimeter 6 is connected with the entrance of second segment cooling pipe 13, the outlet of described second segment cooling pipe 13 is connected with the entrance of two-step throttle valve 8, the outlet of described two-step throttle valve 8 is connected with the entrance of secondary evaporimeter 9, the outlet of described secondary evaporimeter 9 is connected with pneumatic fan 10 air inlet port, gas outlet and the confined space of described pneumatic fan are interlinked to the outside,
Described first paragraph cooling pipe 12 and second segment cooling pipe 13 are positioned at cold-accumulating box 7.
In the present embodiment, highly pressurised liquid in carbon dioxide steel cylinder is successively through one-level choke valve 5, one-level evaporimeter 6, two-step throttle valve 8 and secondary evaporimeter 9, by second throttle and two-stage cooling, achieve the matched well of pressure drop distribution and cryogenic temperature, this system, compared with existing mine escape capsule refrigeration system, has the outstanding advantages such as good refrigeration effect, efficiency is high, reliability is high; Owing to arranging cold-accumulating box 7 before one-level choke valve 5 and two-step throttle valve 9, the carbon dioxide before throttling is carried out precooling and not only increases throttle efficiency, the size of the quantity of dioxide bottle thus the equipment compartment of minimizing carbon dioxide can be reduced simultaneously.
In the present embodiment, described one-level evaporimeter 6 and secondary evaporimeter 9 are capillary type evaporimeter; Described one-level choke valve 5 and two-step throttle valve 8 are capillary type choke valve; One-level evaporimeter and secondary evaporimeter are slim pipe diameter evaporimeter, also have certain pressure drop distribution and self-regulating function.
The refrigerating method of the mining cold-storage in the present embodiment and carbon dioxide manifold type refrigeration system, its process of refrigerastion is as follows:
When the temperature in mine is higher than 31.1 DEG C, first end and second end of described three-way diverter valve 4 communicate; High normal pressure and temperature carbon dioxide in described carbon dioxide steel cylinder 1, through first paragraph cooling pipe 12 precooling, becomes the carbon dioxide liquid of high pressure low temperature; The carbon dioxide liquid of described high pressure low temperature, after one-level choke valve 5, forces down the carbon dioxide liquid of temperature in becoming; After the carbon dioxide liquid forcing down temperature in described is exchanged by one-level evaporimeter 6 and air heat in cabin, become the carbon dioxide of middle normal pressure and temperature; The carbon dioxide of described middle normal pressure and temperature, after second segment cooling pipe 13 further precooling, forces down the carbon dioxide liquid of temperature in becoming; The carbon dioxide liquid forcing down temperature in described, after two-step throttle valve 8, becomes the carbon dioxide of low-pressure low-temperature; The carbon dioxide of described low-pressure low-temperature becomes the carbon dioxide of low normal pressure and temperature after realizing exchange heat by secondary evaporimeter 9 and gas in cabin; The carbon dioxide of described low normal pressure and temperature drives pneumatic fan 10 to discharge out of my cabin afterwards; Described pneumatic fan 10 drives gas and one-level evaporimeter 6 and secondary evaporimeter 9 in cabin to carry out exchange heat;
When the temperature in mine is lower than 31.1 DEG C, the 3rd end of described three-way diverter valve 4, first end communicate; Normal pressure and temperature carbon dioxide during high normal pressure and temperature carbon dioxide liquid in described carbon dioxide steel cylinder 1 becomes after directly entering one-level choke valve 5; Warm carbon dioxide liquid is forced down in becoming after described middle normal pressure and temperature carbon dioxide enters second segment cooling pipe 13 precooling quickly through one-level evaporimeter 6; Force down warm carbon dioxide liquid in described and become low-pressure low-temperature carbon dioxide after two-step throttle valve 8; Described low-pressure low-temperature carbon dioxide becomes low normal pressure and temperature carbon dioxide after realizing exchange heat by secondary evaporimeter 9 and gas in cabin; Described low normal pressure and temperature carbon dioxide is discharged out of my cabin after driving pneumatic fan 10; Described pneumatic fan 10 drives gas and one-level evaporimeter 6 and secondary evaporimeter 9 in cabin to carry out exchange heat.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of the technical program, it all should be encompassed in the middle of right of the present invention.
Claims (2)
1. the refrigerating method of a mining cold-storage and carbon dioxide manifold type refrigeration system, it is characterized in that: described mining cold-storage and carbon dioxide manifold type refrigeration system comprise carbon dioxide steel cylinder (1), carbon dioxide bus-bar (2), stop valve (3), three-way diverter valve (4), cold-accumulating box (7), first paragraph cooling pipe (12), one way valve (11), one-level choke valve (5), one-level evaporimeter (6), second segment cooling pipe (13), two-step throttle valve (8), secondary evaporimeter (9) and pneumatic fan (10),
The gas outlet of described carbon dioxide steel cylinder (1) is connected with carbon dioxide bus-bar (2) air inlet port, the gas outlet of described carbon dioxide bus-bar (2) is connected with stop valve (3) air inlet port, described stop valve (3) gas outlet is connected with the first end of three-way diverter valve (4), second end of described three-way diverter valve (4) is connected with the entrance of first paragraph cooling pipe (12), the outlet of described first paragraph cooling pipe (12) is connected with the entrance of one way valve (11), the outlet of described one way valve (11) is divided into two-way, one tunnel is connected with the 3rd end of three-way diverter valve (4), another road is connected with the entrance of one-level choke valve (5), the outlet of described one-level choke valve (5) is connected with the entrance of one-level evaporimeter (6), the outlet of described one-level evaporimeter (6) is connected with the entrance of second segment cooling pipe (13), the outlet of described second segment cooling pipe (13) is connected with the entrance of two-step throttle valve (8), the outlet of described two-step throttle valve (8) is connected with the entrance of secondary evaporimeter (9), the outlet of described secondary evaporimeter (9) is connected with pneumatic fan (10) air inlet port, gas outlet and the confined space of described pneumatic fan are interlinked to the outside,
Described first paragraph cooling pipe (12) and second segment cooling pipe (13) are positioned at cold-accumulating box (7);
Described refrigerating method comprises following process:
When the temperature in mine is higher than 31.1 DEG C, first end and second end of described three-way diverter valve (4) communicate; High normal pressure and temperature carbon dioxide in described carbon dioxide steel cylinder (1), through first paragraph cooling pipe (12) precooling, becomes the carbon dioxide liquid of high pressure low temperature; The carbon dioxide liquid of described high pressure low temperature, after one-level choke valve (5), forces down the carbon dioxide liquid of temperature in becoming; After the carbon dioxide liquid forcing down temperature in described is exchanged by air heat in one-level evaporimeter (6) and cabin, become the carbon dioxide of middle normal pressure and temperature; The carbon dioxide of described middle normal pressure and temperature, after second segment cooling pipe (13) further precooling, forces down the carbon dioxide liquid of temperature in becoming; The carbon dioxide liquid forcing down temperature in described, after two-step throttle valve (8), becomes the carbon dioxide of low-pressure low-temperature; The carbon dioxide of described low-pressure low-temperature becomes the carbon dioxide of low normal pressure and temperature after realizing exchange heat by secondary evaporimeter (9) and gas in cabin; The carbon dioxide of described low normal pressure and temperature drives pneumatic fan (10) to discharge out of my cabin afterwards; Described pneumatic fan (10) drives gas and one-level evaporimeter (6) and secondary evaporimeter (9) in cabin to carry out exchange heat;
When the temperature in mine is lower than 31.1 DEG C, the 3rd end of described three-way diverter valve (4), first end communicate; High normal pressure and temperature carbon dioxide liquid in described carbon dioxide steel cylinder (1) directly enter one-level choke valve (5) become afterwards in normal pressure and temperature carbon dioxide; Warm carbon dioxide liquid is forced down in becoming after described middle normal pressure and temperature carbon dioxide enters second segment cooling pipe (13) precooling quickly through one-level evaporimeter (6); Force down warm carbon dioxide liquid in described and become low-pressure low-temperature carbon dioxide after two-step throttle valve (8); Described low-pressure low-temperature carbon dioxide becomes low normal pressure and temperature carbon dioxide after realizing exchange heat by secondary evaporimeter (9) and gas in cabin; Described low normal pressure and temperature carbon dioxide is discharged out of my cabin after driving pneumatic fan (10); Described pneumatic fan (10) drives gas and one-level evaporimeter (6) and secondary evaporimeter (9) in cabin to carry out exchange heat.
2. the refrigerating method of mining cold-storage according to claim 1 and carbon dioxide manifold type refrigeration system, is characterized in that: described one-level evaporimeter (6) and secondary evaporimeter (9) are capillary type evaporimeter; Described one-level choke valve (5) and two-step throttle valve (8) are capillary type choke valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210511889.0A CN102966366B (en) | 2012-12-04 | 2012-12-04 | Mining cold storage and carbon dioxide coupled refrigeration system and method |
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| CN201210511889.0A CN102966366B (en) | 2012-12-04 | 2012-12-04 | Mining cold storage and carbon dioxide coupled refrigeration system and method |
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| CN102966366B true CN102966366B (en) | 2016-01-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201902226U (en) * | 2010-11-22 | 2011-07-20 | 陈炬 | Combined type pit cooling system |
| CN102121392B (en) * | 2011-01-05 | 2012-12-26 | 大连亿斯德制冷设备有限公司 | Heat-radiating, recovering and cooling system for mine |
| CN202001047U (en) * | 2011-01-18 | 2011-10-05 | 辽宁卓异科技有限公司 | Cooling and dehumidifying device of refuge chamber for mines |
| CN102128043A (en) * | 2011-01-18 | 2011-07-20 | 赫尔柯矿业制冷技术(安徽)有限公司 | Underhole regional cooling system |
| CN102305490A (en) * | 2011-09-08 | 2012-01-04 | 南京航空航天大学 | Anti-icing-plug self-defrosting type carbon dioxide opened refrigerating system and method |
| CN102392673B (en) * | 2011-09-19 | 2014-01-08 | 东南大学 | Frostless-air cooling and dehumidification system and method |
| CN202544898U (en) * | 2012-02-02 | 2012-11-21 | 朱海元 | Internally transformed all-in-one machine with integration of condensation, dehumidification and cooling |
| CN102777202A (en) * | 2012-08-03 | 2012-11-14 | 合肥天鹅制冷科技有限公司 | Carbon dioxide air conditioning system |
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