CN201025057Y - Device for mine well to recycle and utilize returned wind - Google Patents
Device for mine well to recycle and utilize returned wind Download PDFInfo
- Publication number
- CN201025057Y CN201025057Y CNU2006200781774U CN200620078177U CN201025057Y CN 201025057 Y CN201025057 Y CN 201025057Y CN U2006200781774 U CNU2006200781774 U CN U2006200781774U CN 200620078177 U CN200620078177 U CN 200620078177U CN 201025057 Y CN201025057 Y CN 201025057Y
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- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 238000009423 ventilation Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 9
- 238000005260 corrosion Methods 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims description 3
- 238000005065 mining Methods 0.000 abstract description 14
- 239000003245 coal Substances 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000003287 bathing Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract 2
- 230000002528 anti-freeze Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000000605 extraction Methods 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 241000233805 Phoenix Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Abstract
The utility model provides a heat recycling device for the mine return air. An air outlet channel or a bypass air channel is internally provided with a heat exchanger which can be a double-air flow channel type heat exchanger, a heat-pipe type heat exchanger, a rotary heat exchanger, a plate type heat exchanger or a heat medium type heat exchanger. By providing a heat recycling device for the mine return air, when in heat exchange engineering, the negative pressure which is needed for overcoming the resistance of the air channel and the heat exchanger is supplied by the coal mine ventilator; moreover, the extracted heat of the mine return air is either for frost protection of the mine air intake cylinder, or for other production and living heating, such as heating and bathing for the mining area and other heating aspects.
Description
Technical field
The utility model relates to mine ventilation technology, heat transfer technology and air-conditioning technical field.Especially the device recycled of mine return air heat.
Background technology
Mine ventilation system is the important system that mine production ensures, the ventilation system of at present general mine is a central ventilation system, adopts special-purpose ventilating shaft return air, directly enters atmosphere after utilizing the ventilation fan exhaust ventilation.The colliery is generally underground mining, because the temperature in tunnel is higher, reach 30-40 degree centigrade, even the higher mine tunnel of temperature is also often run into, usually will raise about 3 degrees centigrade to the 100 meter temperature that descend every below the zone of constant temperature, the temperature of zone of constant temperature generally about 15 degrees centigrade, can reach about 30 degrees centigrade as one underground 600 meters mine ground temperature.The wet exchange of heat takes place in when air is flowed through underground passage and tunnel, main equipment heat radiation below adding mine also all enters in the return air, makes and containing a large amount of available heats in the return air, but the return air in colliery all is directly to enter atmosphere at present that a large amount of heats do not obtain using.In the winter time in order to guarantee the antifreeze requirement of downcast pit shaft, coal mining enterprise generally also needs to adopt coal-burning boiler production steam by heat transmission equipment air intake to be heated on the other hand.For coal mining enterprise, the coal that this mine is produced though burn is very convenient, but the colliery is low with coal-burning boiler efficient simultaneously, complex management, and coal belongs to non-renewable energy resources, also can cause environment pollution after the burning, do not meet the national sustainable development strategy, also reduced can export trade coal, reduced the profit of enterprise.At present, yet there are no the method and apparatus that the mine return air heat is recycled.
Summary of the invention
The utility model purpose is: propose the device that a kind of mine return air heat is recycled.Especially in order to make full use of a large amount of reproducible heat in the mine return air, the method and apparatus that provides the mine return air heat to reclaim, other use hot monomer to be used for antifreeze, the mining area heating of pit shaft and bathing etc. after the heat extraction with mine return air, cancel traditional heating plant with coal-burning boiler, actively utilize this regenerative resource of mine return air heat, reduce the running cost of enterprises such as colliery, improve the environment of mining area quality.
The utility model purpose is achieved through the following technical solutions: mine return air heat recycle device: the heat exchanger method directly reclaims mine return air heat.In the air channel of returnairshaft outlet or be provided with the bypass air channel in addition, in outlet air channel or bypass air channel, be provided with heat interchanger.Described heat interchanger has certain dedusting anti-corrosion function or preposition dust removal and filtration apparatus.
Described heat interchanger is two flow channel type heat interchangers; Also can be rotary or runner heat exchanger, middle heating agent formula heat exchanger, plate exchanger, heat-pipe heat exchanger or other heat-exchanger rigs that is fit to; Described heat interchanger can also be the heat interchanger of source pump heat absorbing end.The heat absorbing end heat interchanger of source pump is surface heat exchanger, water jet heat interchanger.
Heat transferring medium carries out interchange of heat in the internal flow of heat interchanger, can combine with source pump heat absorbing end interchanger, in the container of source pump heat absorbing end interchanger dipping heat transferring medium, makes source pump have hot efficiently platform.
Be equipped with unlatching on the air channel of outlet and on the bypass air channel and cutting off control valve.The release end of heat of described heat interchanger is in new wind wind inlet channel.
The utility model characteristics are: by the heat utilization use device of two kinds of mine return air is provided, provided by the coalmine ventilation machine because of air channel and the required negative pressure of heat exchanger resistance that overcomes in the heat exchange engineering.Be back to the antifreeze of mine air intake pit shaft after the heat extraction of mine return air, also be used for the heat supply of other production and life, as other use hot monomer to be used for mining area heating and bathing etc., even can cancel the heating plant of traditional later coal-burning boiler, actively utilize this regenerative resource of mine return air heat, reduce the running cost of coal mining enterprise, improve the environment of mining area quality.
Description of drawings
Fig. 1 is that the utility model heat exchanger method directly reclaims mine return air heat schematic diagram
Fig. 2 is that the heat pump method reclaims mine return air heat schematic diagram indirectly
Fig. 3 is a runner heat exchanger heat exchange schematic diagram
Fig. 4 is middle heating agent formula heat exchanger heat exchange schematic diagram
Fig. 5 is a plate exchanger heat exchange schematic diagram
Fig. 6 is the hot schematic diagram of heat-pipe heat exchanger
1. is heat supply return pipes among the figure, 2. be the heat supply outlet pipe, the 3rd, source pump, the 4th, air-water-to-water heat exchanger water inlet pipe, the 5th, air-water-to-water heat exchanger outlet pipe, the 6th, air-water-to-water heat exchanger, the 7th, control valve, the 8th, the bypass air channel 9. is return airways, the 10th, and the mine ventilation machine, the 11st, the return air ventilating shaft, 12. wind inlet channel, the 13rd. two flow channel type heat interchangers, the 14th, runner heat exchanger, 15. heating agent formula heat exchanger in the middle of being, the 16th, plate exchanger, the 17th, heat-pipe heat exchanger, the 18th, mine return air flow arrows, the 19th, the new wind of mine, the 20th removes downcast.
The specific embodiment
Below in conjunction with drawings and Examples scheme of the present utility model is described further.
As depicted in figs. 1 and 2, mine return air heat recycle device, the heat exchanger method directly reclaims mine return air heat.Device for carrying out said mainly comprises control valve 7 as shown in Figure 1, bypass air channel 8, return airway 9, mine ventilation machine 10, return air ventilating shaft 11, wind inlet channel 12, two flow channel type heat interchangers (heat exchanger) 13.On the air channel 9 of returnairshaft outlet, can be provided with bypass air channel 8 in addition, in the bypass air channel, two flow channel type heat interchangers 13 with dust arrester function especially are installed, also install and open and cut-out control valve 7, control valve can be the square butterfly valve, adjusting by the square butterfly valve can directly be heated mine return air by bypass air channel 8 and by the air intake in 13 pairs of mine air inlet ducts 12 of the heat exchanger in the bypass air channel through row, with air intake be heated to 15 degrees centigrade left back, the cold air of sending into air intake well head and not heating by special-purpose phoenix pipe is mixed into 2 degrees centigrade and sends into downcast, reaches the antifreeze purpose of pit shaft.
Be equipped with control valve on the air channel of outlet and on the bypass air channel, the adjusting of valve makes mine return air can pass through the bypass air channel, by the draw heat and emit heat at wind inlet channel to air intake and realize direct heating to air intake from return air of the heat interchanger in the bypass passageways.Air intake is sent into well head by the air channel of special use, reaching the antifreeze requirement of pit shaft.The heat interchanger of installing in the bypass air channel is the air-to-water heat exchanger 6 with dedusting anti-corrosion function, and described air-to-water heat exchanger is a source pump heat absorbing end interchanger; Can combine with source pump by heat interchanger, utilize air-to-water heat exchanger heat absorption to realize indirect heating through source pump after with temperature increase again.With bypass air channel adjusted valve, make main air outlet open-minded, and the bypass air channel is closed on the air channel that can pass through when maintenance or special circumstances to export.
Described air-to-water heat exchanger should have certain dedusting anti-corrosive apparatus; Comprise preposition cleaner.
Described air-to-water heat exchanger is surface-type heat exchanger, water jet heat exchanger or other suitable heat-exchanger rigs.
Mine return air can carry out interchange of heat by the bypass air channel and with air-to-water heat exchanger, with the heat extraction in the return air in water, heat pump assembly by special use utilizes the water at low temperature in the air-to-water heat exchanger, produces the higher hot water of temperature, by pipeline hot water is used for the heat supply in mining area again.Since the temperature of return air higher generally 20 to 30 degrees centigrade of relative humidity near 100%, temperature at release end of heat is set at 60-80 degree centigrade, by selecting suitable working medium for use, can reach 4.5-6 according to present heat pump heat supply Energy Efficiency Ratio, promptly utilize the electric energy of 1kw just can from the return air of mine, produce heat energy more than the 4.5kw, when especially the efficient of general heat pump was very low during winter, the utility model still guaranteed extreme efficiency.Need operating cost to reduce more than 50% than common coal-burning boiler.The operation of pump assembly is without any pollution simultaneously, not burning, not smoke evacuation, there is not discarded object yet, the application that does not need to stack the place heat pump type air conditioning system of fuel and refuse had both met the energy-saving and environmental protection strategy of sustainable development that country proposes, and can bring good social benefit and self is huge to economic benefit for coal mining enterprise again.
Adjusting by the square butterfly valve makes mine return air carry out interchange of heat by the bypass air channel and with air-to-water heat exchanger 6, with the heat extraction in the return air in water, heat pump assembly 3 by special use utilizes the water at low temperature in the air-to-water heat exchanger, produce the higher hot water of temperature, by pipeline antifreeze with hot water air intake pit shaft, also be used for the heat supply of other production and life again.Control valve can be switched in emergency or the occasion that needs and to close the bypass air channel, open the air channel between returnairshaft and the mine ventilation machine.
The utility model heat exchanger can be two flow channel type heat interchangers, heat pipe type heat interchanger, rotary heat exchanger, heat-exchangers of the plate type, middle heating agent formula heat interchanger, and can be used as source pump heat absorbing end interchanger; Heating agent formula heat interchanger is generally with the heat interchanger of water as heat transferring medium, and above-mentioned heat interchanger can carry out aggregate erection with two kinds or three kinds in the air channel.As two flow channel type heat interchangers and heat pipe type heat interchanger and heating agent formula heat interchanger (with the heat interchanger of water as heat transferring medium, as the middle heat exchanger of source pump, among the figure shown in 15) three's series connection, the two series connection also can.Two flow channel type heat interchangers 16 as shown in Figure 5, the one tunnel is used for mine return air, another road is used for the new wind of mine and passes through.Heat interchanger 14 and heat pipe exchanger 17 also can be used for said apparatus.
Above-mentioned heat interchanger is installed in main air duct or bypass air channel, the bypass air channel is shape pipe or an arc curve open pipe road, all establishes two flow channel type heat interchangers, heat pipe type heat interchanger, rotary heat exchanger, heat-exchangers of the plate type, middle heating agent formula heat interchanger or source pump heat absorbing end interchanger in the three sections linear positions or the arc curve open pipe road of door shape pipe.
Heat exchanger method of the present utility model directly reclaims mine return air heat and the heat pump method reclaims mine return air heat indirectly, these two kinds of devices are not isolated mutually, can with good conditionsily be used in combination in actual applications, reach making full use of of mine return air energy to reach best energy-saving effect, enrich the sustainable development of ore deposit enterprise enterprise energy utilizations such as existing colliery.When mine return air described in the utility model passed through the side with passage and heat exchanger, overcoming the required negative pressure of resistance was provided by the mine ventilation machine.Or increase new blower fan with passage on the side.
Specific embodiments: heat transferring medium carries out interchange of heat in the internal flow of heat interchanger, can combine with source pump heat absorbing end interchanger, in the container of source pump heat absorbing end interchanger dipping heat transferring medium, makes source pump have hot efficiently platform.
Be equipped with on the air channel of outlet and on the bypass air channel and open and the cut-out control valve.
The release end of heat of described heat pipe type heat interchanger is in new wind wind inlet channel.
Two flow channel type heat interchangers, heat pipe type heat interchanger, source pump heat absorbing end interchanger; With water as the heat interchanger of heat transferring medium in the air channel two kinds or three kinds carry out aggregate erection.
Mine return air 11 enters return airway 9 from mine return air ventilating shaft, keying by butterfly valve 7 is introduced mine return air other with air channel 8, carry out interchange of heat with air-water-to-water heat exchanger 6 on the side in the air channel, by being that air-water-to-water heat exchanger water inlet pipe 4 is that air-water-to-water heat exchanger outlet pipe 5 is sent heat into source pump 3, and then through heat supply return pipe 1, heat supply outlet pipe 2 is used thermally point with the heat delivery that source pump is produced to each, reaches the purpose of mining area heat supply.
When mine return air passes through the side with passage and heat exchanger, be provided with the mine ventilation machine that overcomes resistance.
Embodiment scheme: build other same air channel on the return air channel limit, and build the wind inlet channel of mine with the limit, air channel on the side, between two air channels, use heat exchanger (runner heat exchanger, middle heating agent formula heat exchanger, plate exchanger, heat-pipe heat exchanger or other heat-exchanger rigs that is fit to) to new wind heating, consideration heat transfer temperature difference and the new wind of efficient are heated to about 15 degrees centigrade sends into the air intake heapstead by special-purpose air channel again, be mixed into 2 degree with the air that does not partly heat again and send into downcast, guarantee the antifreeze requirement of pit shaft.The characteristics of the utility model scheme are that the heat that makes full use of mine return air does not need consumed power or consumption electric energy seldom, reach the antifreeze requirement of pit shaft, and the mine return air heat is a regenerative resource, whole device is without any pollution, and the resistance that only need overcome corresponding ventilating duct gets final product.If this invention utilizes, will save a large amount of operating costs for coal mining enterprise in the colliery.
Two flow channel type heat interchangers, heat pipe type heat interchanger, rotary heat exchanger, heat-exchangers of the plate type, middle heating agent formula heat interchanger source pump heat absorbing end interchanger and water carry out aggregate erection with two kinds or three kinds as the heat interchanger of heat transferring medium in the air channel.
Be that the bypass air channel is shape pipe or an arc curve pipeline, two kinds or three kinds of combinations of all establishing two flow channel type heat interchangers, heat pipe type heat interchanger, rotary heat exchanger, heat-exchangers of the plate type, middle heating agent formula heat interchanger or source pump heat absorbing end interchanger at the three sections linear positions or the arc curve pipeline of door shape pipe.
Such scheme of the present utility model is not isolated mutually, guarantee the antifreeze of air intake pit shaft in the time of in the winter time earlier, waste heat heats the heat absorbing end of heat pump again, or the heat absorbing end of heating heat pipe, the release end of heat of heat pipe places water temperature in the container that is used in the container to raise (can be used for improving the temperature of the heat absorbing end of heat pump), or carries out other with good conditionsi being used in combination; Cold can be used for the refrigeration summer air-conditioning of mine (as can be used for) when starting heat pump hot water during summer.Regulate the energy-saving effect that reaches best by combination, reach making full use of of mine return air energy, enrich the sustainable development of existing coal mining enterprise using energy source.
Claims (10)
1. the device recycled of mine return air heat is characterized in that in the air channel of returnairshaft outlet or is provided with the bypass air channel in addition, is provided with heat interchanger in outlet air channel or bypass air channel.
2. the device that mine return air heat according to claim 1 is recycled is characterized in that described heat interchanger is two flow channel type heat interchangers, heat pipe type heat interchanger, rotary heat exchanger, heat-exchangers of the plate type or middle heating agent formula heat interchanger.
3. the device that mine return air heat according to claim 2 is recycled is characterized in that described heat interchanger is the heat interchanger of source pump heat absorbing end; The heat absorbing end heat interchanger of source pump is surface heat exchanger or water jet heat interchanger.
4. the device that mine return air heat according to claim 1 is recycled is characterized in that described heat exchanger is heat interchanger or the heat exchanger fore filter with dedusting anti-corrosion function.
5. the device that mine return air heat according to claim 3 is recycled is characterized in that source pump has hot efficiently platform in the container of source pump heat absorbing end interchanger dipping heat transferring medium.
6. the device that mine return air heat according to claim 2 is recycled is equipped with on the air channel that it is characterized in that exporting and the bypass air channel and opens and the cut-out control valve.
7. the device that mine return air heat according to claim 2 is recycled, the release end of heat that it is characterized in that described heat interchanger is in new wind wind inlet channel.
8. the device that mine return air heat according to claim 2 is recycled is characterized in that two flow channel type heat interchangers, heat pipe type heat interchanger, rotary heat exchanger, heat-exchangers of the plate type, middle heating agent formula heat interchanger source pump heat absorbing end interchanger and water carry out aggregate erection with two kinds or three kinds as the heat interchanger of heat transferring medium in the air channel.
9. the device that mine return air heat according to claim 2 is recycled, it is characterized in that described bypass air channel is shape pipe or an arc curve pipeline, two kinds or three kinds of combinations of all establishing two flow channel type heat interchangers, heat pipe type heat interchanger, rotary heat exchanger, heat-exchangers of the plate type, middle heating agent formula heat interchanger or source pump heat absorbing end interchanger at the three sections linear positions or the arc curve pipeline of door shape pipe.
10. mine return air heat according to claim 2 reclaims the sharp device of using, and when it is characterized in that mine return air process side with passage and heat exchanger, is provided with the mine ventilation machine that overcomes resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200781774U CN201025057Y (en) | 2006-09-11 | 2006-09-11 | Device for mine well to recycle and utilize returned wind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200781774U CN201025057Y (en) | 2006-09-11 | 2006-09-11 | Device for mine well to recycle and utilize returned wind |
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| Publication Number | Publication Date |
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| CN201025057Y true CN201025057Y (en) | 2008-02-20 |
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| CNU2006200781774U Expired - Fee Related CN201025057Y (en) | 2006-09-11 | 2006-09-11 | Device for mine well to recycle and utilize returned wind |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845945A (en) * | 2010-04-01 | 2010-09-29 | 芬雷选煤工程技术(北京)有限公司 | Well head heater taking heat pump as heat source |
| CN103615282A (en) * | 2013-12-13 | 2014-03-05 | 北京矿大节能科技有限公司 | Mine total return air dust removal device and operation mode thereof |
| CN104097869A (en) * | 2014-06-30 | 2014-10-15 | 中国冶金矿业鞍山冶金设计研究院有限责任公司 | Independent ore bin antifreezing deicing process at mine earth surface in severe cold region |
| CN106196663A (en) * | 2016-08-31 | 2016-12-07 | 中矿金业股份有限公司 | Extract underground hydro-thermal insulation wellbore system and pit shaft heat preserving method |
| CN110630308A (en) * | 2019-09-05 | 2019-12-31 | 常州大学 | Fracturing single-well multi-branch compressed air energy storage ventilation system for coal mine well |
| CN110986635A (en) * | 2019-12-06 | 2020-04-10 | 西安科技大学 | Mine double-heat-source comprehensive heat recovery device and device structure optimization method |
| CN111059951A (en) * | 2019-12-03 | 2020-04-24 | 中煤科工集团武汉设计研究院有限公司 | Mine ventilation air methane waste heat utilization device |
| CN112392068A (en) * | 2019-08-17 | 2021-02-23 | 北京云庐科技有限公司 | Ventilation system applied to comprehensive pipe gallery and method thereof |
| CN117948711A (en) * | 2024-03-26 | 2024-04-30 | 中际(江苏)智能暖通设备有限公司 | Low-temperature heat pump air heater for coal mine wellhead |
| CN120027471A (en) * | 2025-04-22 | 2025-05-23 | 北京中矿赛力贝特节能科技有限公司 | A heat pipe air conditioning system for mines |
-
2006
- 2006-09-11 CN CNU2006200781774U patent/CN201025057Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845945A (en) * | 2010-04-01 | 2010-09-29 | 芬雷选煤工程技术(北京)有限公司 | Well head heater taking heat pump as heat source |
| CN103615282A (en) * | 2013-12-13 | 2014-03-05 | 北京矿大节能科技有限公司 | Mine total return air dust removal device and operation mode thereof |
| CN104097869A (en) * | 2014-06-30 | 2014-10-15 | 中国冶金矿业鞍山冶金设计研究院有限责任公司 | Independent ore bin antifreezing deicing process at mine earth surface in severe cold region |
| CN104097869B (en) * | 2014-06-30 | 2016-08-24 | 中国冶金矿业鞍山冶金设计研究院有限责任公司 | A kind of earth's surface, mine, severe cold area independence ore storage bin antifreeze deicing technique |
| CN106196663A (en) * | 2016-08-31 | 2016-12-07 | 中矿金业股份有限公司 | Extract underground hydro-thermal insulation wellbore system and pit shaft heat preserving method |
| CN106196663B (en) * | 2016-08-31 | 2019-01-01 | 中矿金业股份有限公司 | Extract underground hydro-thermal heat preservation wellbore system and pit shaft heat preserving method |
| CN112392068A (en) * | 2019-08-17 | 2021-02-23 | 北京云庐科技有限公司 | Ventilation system applied to comprehensive pipe gallery and method thereof |
| CN110630308A (en) * | 2019-09-05 | 2019-12-31 | 常州大学 | Fracturing single-well multi-branch compressed air energy storage ventilation system for coal mine well |
| CN111059951A (en) * | 2019-12-03 | 2020-04-24 | 中煤科工集团武汉设计研究院有限公司 | Mine ventilation air methane waste heat utilization device |
| CN110986635A (en) * | 2019-12-06 | 2020-04-10 | 西安科技大学 | Mine double-heat-source comprehensive heat recovery device and device structure optimization method |
| CN117948711A (en) * | 2024-03-26 | 2024-04-30 | 中际(江苏)智能暖通设备有限公司 | Low-temperature heat pump air heater for coal mine wellhead |
| CN117948711B (en) * | 2024-03-26 | 2024-06-04 | 中际(江苏)智能暖通设备有限公司 | Low-temperature heat pump air heater for coal mine wellhead |
| CN117948711B8 (en) * | 2024-03-26 | 2024-07-19 | 中际(江苏)智能暖通设备有限公司 | Low-temperature heat pump air heater for coal mine wellhead |
| CN120027471A (en) * | 2025-04-22 | 2025-05-23 | 北京中矿赛力贝特节能科技有限公司 | A heat pipe air conditioning system for mines |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080220 Termination date: 20130911 |