CN106948856A - A kind of mine local cooling device and method - Google Patents
A kind of mine local cooling device and method Download PDFInfo
- Publication number
- CN106948856A CN106948856A CN201710337889.6A CN201710337889A CN106948856A CN 106948856 A CN106948856 A CN 106948856A CN 201710337889 A CN201710337889 A CN 201710337889A CN 106948856 A CN106948856 A CN 106948856A
- Authority
- CN
- China
- Prior art keywords
- cooling
- air
- mine
- temperature
- cooling chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000007921 spray Substances 0.000 claims abstract description 21
- 230000004907 flux Effects 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract description 2
- 238000005065 mining Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 206010019345 Heat stroke Diseases 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002595 cold damage Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F3/00—Cooling or drying of air
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
Abstract
Spray equipment is provided with the top of a kind of mine local cooling device, including blower fan, air duct, oral siphon, water pump and cooling chamber, cooling chamber, cooling chamber is provided with air inlet and air outlet, wherein：Blower fan is connected by air duct with air inlet, and oral siphon is connected with spray equipment, and oral siphon is provided with water pump, and air outlet is connected by air duct with working face.Cool-down method comprises the following steps：Start blower fan, high temperature air in mine is flowed into cooling chamber by air inlet through air duct；Water pump is opened, cold water source is squeezed into spray equipment, cooling chamber is sprayed into through spray equipment, exchanged heat with the high temperature air that air inlet is flowed into, form cooling airflow and water source after heat exchange, cooling airflow flows into working face through air outlet, and according to cooling needs, control cooling airflow temperature, reach local cooling.The invention device is simple in construction, easy to operate, and cool-down method can avoid the economic loss and accident harm that underground coal mine high temperature causes, while energy-saving and emission-reduction are realized, with higher economic benefit.
Description
Technical field：
The invention belongs to mine cooling technical field, and in particular to a kind of mine local cooling device and method.
Background technology：
Due to the rapid growth of China's economy, the demand to the energy is increasing, and particularly the energy based on coal is needed
The breach asked can constantly increase, and the quantity and yield of pit mining constantly increase, therefore, the increasing of mining mineral resource over time
The mineral products of long superficial part are constantly tailed off, and the exploitation that result in mine is gradually developed to deep direction, the coal face in colliery and pick
The depth for entering face is also constantly deepened.Thus mine high-temperature the problem of become inevitable, underground thermal pollution turn into gas, top board,
Another big disaster after dust, water, fiery five big disasters.Therefore the falling temperature technique of researching high-temperature mine makes great sense.
Prediction is in the gross reserves of coal in China, and the buried depth for having 73 points two percent coal reserves is alreadyd exceed
1000 meters.Because the extension of the depth of excavation, the mine quantity that depth has exceeded 800 meters also becomes more and more.With me
The depth of the coal mining of state, intensity are gradually increased, and show the increased trend of acceleration, and in East China, Jing Jing is exploited
Depth generally enters below 600m, therefore with the intensification of depth, temperature is raised to be become increasingly to the Influence of production of mine
Seriously, the temperature for having the down-hole extraction locations of minority is up to 38 DEG C or so, or even also has higher.
Because the temperature in the job site of mine deep part increases, the operating efficiency drop in the personnel of underground work can be caused
It is low, the service life of equipment can also shortened, and had a serious impact to the healthy of staff.At home and abroad
Research statistics show, temperature often increases by 1 DEG C, and the medical expense that the efficiency of shaft production will reduce by 6%~8%, miner will
Increase by 8%~10%, the fault rate of the electromechanical equipment of underground can also increase by more than 1 times；According to the data recent statistics in South Africa, wet
Ball temperature is the workman of 32.8~33.8 DEG C of conditional operation, is 0.57 in the dead probability of the heatstroke of thousand people.According to《Pacify in colliery
Full code》102nd article also has clear stipulaties:Mine main getting working face air themperature must not exceed 26 DEG C, when the temperature of air
When degree exceedes set point of temperature, it is necessary to shorten the working time more than temperature work site personnel, and give treating for high temperature health care
Meet；Getting working face is when the temperature of air is more than 30 DEG C, it is necessary to stop operation.
The getting working face of current high-temperature mine be substantially take increase air quantity, reduce plant equipment radiating and
The problem of shortening measure etc. of activity duration, but ground Hot disaster can not be efficiently solved.The high-temperature area of mine deep part is adopted
It is 32~34 DEG C to dig working face return air temperature, and can reach 33~35 DEG C in summer, and the worker of operation has at the scene
The phenomenon of heatstroke is now crossed, the health of worker's body and the safety in production at scene are seriously jeopardized by ground Hot disaster, cause mining work
It is forced to stop production in face face.The technology of Deep Mine exploitation high-temperature mine is had become as the vital technology of mining area stable development.
For many high-temperature mines, the improvement of underground thermal pollution has two hang-ups：
(1) system equipment of mine cooling refrigeration is costly, operation when the consumption energy is big, refrigeration effect is undesirable, close
The cold energy loss in the course of conveying of cold of the problem of key is big, on the way in cold damage not only increase the load of refrigeration system, and
And make it that the temperature drop of the operating locations such as getting working face is very restricted；
(2) contrasted with the falling temperature technique of whole mine, mine is in the shaft excavation of construction period and in development work
Falling temperature technique research is less during phase of boring.
The problem of in order to solve underground thermal pollution, the cost of mine cooling is reduced, carry out the cooling of science, necessary exploration
New Refrigeration Technique method, foundes out the pattern of a set of new mine cooling.
The content of the invention：
The purpose of the present invention is that there is provided a kind of mine to avoid economic loss that underground coal mine high temperature causes and accident harm
Local cooling's device and method, the apparatus structure is simple, easy to operate, and preferably economic imitate can be obtained using the cool-down method
Benefit.
To achieve the above object, the present invention uses following technical scheme：
A kind of mine local cooling device, including blower fan, air duct, oral siphon, water pump and cooling chamber, described cooling ceiling
Portion is provided with spray equipment, and described cooling chamber is provided with air inlet and air outlet, wherein：
Described blower fan is connected by air duct with air inlet, and described oral siphon is connected with spray equipment, described
Oral siphon is provided with water pump, and described air outlet is connected by air duct with driving face.
Described oral siphon is connected with tank, described tank deposit cooling water source.
Described air duct is detachable air duct.
Described spray equipment includes aqueduct and atomizer, and described atomizer is arranged on aqueduct, described
Oral siphon be connected with aqueduct, described oral siphon and aqueduct connection are provided with magnetic valve, described magnetic valve with
Control panel is connected.
Temperature measuring device is provided with described air outlet, for measuring cooling airflow temperature at air outlet.
Described cooling chamber bottom is provided with piston, and a small amount of water gathered for discharging in cooling chamber recycles water source.
Described cooling chamber bottom is provided with wheel, and the place that cools is needed for mine local cooling device to be moved to.
Described heat sink is fully sealed in addition to air inlet and air outlet, and water loss is few.
The method for carrying out mine local cooling using described mine local cooling device, comprises the following steps：
(1) start blower fan, high temperature air in mine is flowed into cooling chamber by air inlet through air duct；
(2) water pump is opened, cold water source is squeezed into spray equipment, cooling chamber is sprayed into through spray equipment, is flowed into air inlet
High temperature air exchanges heat, and forms cooling airflow and water source after heat exchange, and cooling airflow flows into driving face through air outlet, and according to drop
Temperature needs, and controls cooling airflow temperature, reaches local cooling.
In described step (2), the control mode of cooling airflow temperature is：Magnetic valve, adjustment are controlled by control panel
Cold water spray flux, and cold water source temperature is adjusted, cooling airflow temperature is met needs.
Beneficial effects of the present invention：
(1) the mine local cooling apparatus structure is simple, including air feed, spray and three parts of supplying water, and can be greatly reduced
Mining cost；
(2) the mine local cooling device is applied to various high-temperature mines, can be moved freely in underworkings, can be fast
The reduction underground coal mine temperature of speed, is reduced due to the economic loss and accident that heat evil is caused；
(3) recirculated water used by the device is few and nozzle is not easily blocked, and can realize the purpose of energy-saving, emission-reducing, environment friendly, with compared with
High economic benefit；
(4) the mine local cooling device, while cooling, with certain dust removing effects, can greatly improve mine
Operating efficiency.
Brief description of the drawings：
Fig. 1 is the mine local cooling apparatus structure schematic diagram of the embodiment of the present invention, wherein：
1- local fans, the detachable air ducts of 2-, 3- oral siphons, 4- high-pressure hydraulic pumps, 5- magnetic valves, 6- aqueducts, 7- atomizations
Nozzle, 8- control panels, 9- cooling chambers, 10- temperature measuring devices, 11- pistons, 12- wheels, A- air inlets, B- air outlets.
Embodiment：
With reference to embodiment, the present invention is described in further detail.
Embodiment 1
A kind of mine local cooling device, structural representation are as shown in figure 1, including local fan 1, detachable air duct 2, enter
Water pipe 3, high-pressure hydraulic pump 4 and cooling chamber 9, the top of cooling chamber 9 are provided with spray equipment, and cooling chamber 9 is provided with air inlet A and air outlet B,
Wherein：
Spray equipment includes aqueduct 6 and atomizer 7, and atomizer 7 is arranged on aqueduct 6；
Local fan 1 is connected by detachable air duct 2 with air inlet A, and air outlet B passes through detachable air duct 2 and driving
Working face is connected, and temperature measuring device 10 is provided with air outlet B, for measuring cooling airflow temperature at air outlet B；Wherein, with
The length of detachable air duct 2 of driving face connection is 90m, a diameter of 1m；
Oral siphon 3 be provided with high-pressure hydraulic pump 4, the side of oral siphon 3 with deposit cooling water source tank connect, opposite side and
Aqueduct 6 is connected, and oral siphon 3 is provided with magnetic valve 5 with the connection of aqueduct 6, and magnetic valve 5 is connected with control panel 8；
The bottom of cooling chamber 9 is provided with piston 11, and a small amount of water gathered for discharging in cooling chamber 9 recycles water source；It is cold
But the bottom of room 9 is simultaneously provided with wheel 12, the cooling place for mine local cooling device to be moved to needs.
Heat sink is fully sealed in addition to air inlet A and air outlet B, and water loss is few.
For having in the mine of cooling demand, the present embodiment, drift section is 14.7m2, 40.15 DEG C of primitive rock temperature is removable
The wall surface temperature for unloading air duct 2 is identical with temperature in mine laneway, is 40.15 DEG C；After setting cools through the device, driving face
In the range of 100 meters, temperature≤25.5 DEG C, the method that mine local cooling is carried out using described mine local cooling device, bag
Include following steps：
(1) local fan 1 is connected by detachable air duct 2 with cooling chamber 9, and mine local cooling device is moved
To driving face, the detachable air duct 2 being connected with driving face is exported with driving face at a distance of 10m, open
Dynamic local fan 1, makes high temperature air in mine flow into cooling chamber 9 by air inlet A through detachable air duct 2；
(2) high-pressure hydraulic pump 4 is opened, cold water source is squeezed into aqueduct by oral siphon 3, cooling chamber 9 is sprayed into through atomizer 7,
Exchanged heat with the high temperature air that air inlet A is flowed into, form cooling airflow and water source after heat exchange, cooling airflow is flowed into through air outlet B and dug
The flow velocity for entering cooling airflow at working face, air outlet B is 4.48m/s, and the averag density of cooling airflow is 1.221kg/m3, pass through
Cooling airflow temperature at the detection air port B of temperature measuring device 10, and according to cooling needs, electromagnetism is controlled by control panel 8
Valve 5, adjusts cold water spray flux, and adjusts cold water source temperature to control cooling airflow temperature, by cooling airflow by air outlet B,
Sprayed at driving face 10m, reaching the purpose of local cooling, after testing, air outlet cooling airflow temperature is 11.45
DEG C, apart from driving face 100m position, temperature reaches 25.5 DEG C, because more remote apart from driving face, temperature is higher, by
This understands that temperature is controlled below 25.5 DEG C in the range of driving face 100m, shows using the mine local cooling
Device carries out mine local cooling, disclosure satisfy that the cooling demand in driving face opereating specification, realizes cooling purpose；Such as
Driving face scope need to be adjusted or different temperature requirements are met, then can by adjusting cold water source temperature and cold water spray flux,
Or corresponding demand is reached by increasing Duo Tai mines local cooling's device, as water accumulation increases in cooling chamber 9, pass through work
Plug 11 recycles water discharge, meanwhile, it is computed, it is distinguished and admirable to pass through cooling chamber 9 from detachable air duct 2, by air outlet B to driving
During working face, stagnation pressure is reduced to 26.6Pa, and energy consumption is smaller.
Claims (9)
1. a kind of mine local cooling device, it is characterised in that described including blower fan, air duct, oral siphon, water pump and cooling chamber
Cooling chamber at the top of be provided with spray equipment, described cooling chamber is provided with air inlet and air outlet, wherein：
Described blower fan is connected by air duct with air inlet, and described oral siphon is connected with spray equipment, and described enters water
Pipe is provided with water pump, and described air outlet is connected by air duct with driving face.
2. mine local cooling according to claim 1 device, it is characterised in that described oral siphon connects with tank
Logical, described tank deposit cooling water source.
3. mine local cooling according to claim 1 device, it is characterised in that described air duct is detachable air duct.
4. mine local cooling according to claim 1 device, it is characterised in that described spray equipment includes aqueduct
And atomizer, described atomizer is arranged on aqueduct, and described oral siphon is connected with aqueduct, and described enters water
Pipe is provided with magnetic valve with aqueduct connection, and described magnetic valve is connected with control panel.
5. mine local cooling according to claim 1 device, it is characterised in that surveyed at described air outlet provided with temperature
Instrument is tried, for measuring cooling airflow temperature at air outlet.
6. mine local cooling according to claim 1 device, it is characterised in that described cooling chamber bottom is provided with work
Plug, a small amount of water gathered for discharging in cooling chamber recycles water source.
7. mine local cooling according to claim 1 device, it is characterised in that described cooling chamber bottom is provided with car
Wheel, the place that cools is needed for mine local cooling device to be moved to.
8. the method that mine local cooling is carried out using the mine local cooling device described in claim 1, it is characterised in that bag
Include following steps：
(1) start blower fan, high temperature air in mine is flowed into cooling chamber by air inlet through air duct；
(2) water pump is opened, cold water source is squeezed into spray equipment, cooling chamber is sprayed into through spray equipment, the high temperature flowed into air inlet
Air heat-exchange, forms cooling airflow and water source after heat exchange, and cooling airflow flows into driving face through air outlet, and according to cooling need
Will, cooling airflow temperature is controlled, local cooling is reached.
9. the method for mine local cooling according to claim 8, it is characterised in that in described step (2), cools down wind
Stream temperature control mode be：Magnetic valve is controlled by control panel, cold water spray flux is adjusted, and adjusts cold water source temperature, is made
Cooling airflow temperature meets needs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710337889.6A CN106948856A (en) | 2017-05-15 | 2017-05-15 | A kind of mine local cooling device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710337889.6A CN106948856A (en) | 2017-05-15 | 2017-05-15 | A kind of mine local cooling device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106948856A true CN106948856A (en) | 2017-07-14 |
Family
ID=59479498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710337889.6A Pending CN106948856A (en) | 2017-05-15 | 2017-05-15 | A kind of mine local cooling device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106948856A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286454A (en) * | 2018-01-30 | 2018-07-17 | 湖南科技大学 | A kind of local cooling's method of high-temperature mine |
| CN108376506A (en) * | 2018-02-11 | 2018-08-07 | 太原理工大学 | A kind of Deep Mine simulation driving face pull-down test device |
| CN108590730A (en) * | 2018-05-09 | 2018-09-28 | 王金凤 | A kind of roadway cooling simulation test device and test method |
| CN109268056A (en) * | 2018-12-07 | 2019-01-25 | 中国矿业大学 | A kind of mine district concentration cooling air-supply balance control device |
| CN110486078A (en) * | 2019-09-25 | 2019-11-22 | 玉溪矿业有限公司 | Underground local ventilation cooling device |
| CN113153408A (en) * | 2021-04-10 | 2021-07-23 | 彝良驰宏矿业有限公司 | Method for cooling mine working face by using mine water |
| CN114439535A (en) * | 2021-12-29 | 2022-05-06 | 陕西正通煤业有限责任公司 | Local refrigeration fan for deep high-temperature mine |
| CN114718630A (en) * | 2022-04-08 | 2022-07-08 | 青阳县来龙方解石矿业有限责任公司 | Environment-friendly cooling treatment system for mine working face |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4394142A (en) * | 1980-09-10 | 1983-07-19 | The United States Of America As Represented By The Secretary Of The Interior | Water spray cooler |
| CN201103406Y (en) * | 2007-09-07 | 2008-08-20 | 武汉星田热环境控制技术有限公司 | Mining high-pressure combined air cooler |
| CN101949297A (en) * | 2010-09-29 | 2011-01-19 | 煤炭科学研究总院重庆研究院 | Air cooler for mining |
| CN201786377U (en) * | 2010-09-29 | 2011-04-06 | 煤炭科学研究总院重庆研究院 | Mining recooling device |
| CN203756213U (en) * | 2014-04-08 | 2014-08-06 | 重庆南桐矿业有限责任公司 | Mining aeration cooling device |
| CN106150538A (en) * | 2015-04-23 | 2016-11-23 | 哈尔滨通用液压机械制造有限公司 | Air cooler for mining |
-
2017
- 2017-05-15 CN CN201710337889.6A patent/CN106948856A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4394142A (en) * | 1980-09-10 | 1983-07-19 | The United States Of America As Represented By The Secretary Of The Interior | Water spray cooler |
| CN201103406Y (en) * | 2007-09-07 | 2008-08-20 | 武汉星田热环境控制技术有限公司 | Mining high-pressure combined air cooler |
| CN101949297A (en) * | 2010-09-29 | 2011-01-19 | 煤炭科学研究总院重庆研究院 | Air cooler for mining |
| CN201786377U (en) * | 2010-09-29 | 2011-04-06 | 煤炭科学研究总院重庆研究院 | Mining recooling device |
| CN203756213U (en) * | 2014-04-08 | 2014-08-06 | 重庆南桐矿业有限责任公司 | Mining aeration cooling device |
| CN106150538A (en) * | 2015-04-23 | 2016-11-23 | 哈尔滨通用液压机械制造有限公司 | Air cooler for mining |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286454A (en) * | 2018-01-30 | 2018-07-17 | 湖南科技大学 | A kind of local cooling's method of high-temperature mine |
| CN108376506A (en) * | 2018-02-11 | 2018-08-07 | 太原理工大学 | A kind of Deep Mine simulation driving face pull-down test device |
| CN108590730A (en) * | 2018-05-09 | 2018-09-28 | 王金凤 | A kind of roadway cooling simulation test device and test method |
| CN109268056A (en) * | 2018-12-07 | 2019-01-25 | 中国矿业大学 | A kind of mine district concentration cooling air-supply balance control device |
| CN110486078A (en) * | 2019-09-25 | 2019-11-22 | 玉溪矿业有限公司 | Underground local ventilation cooling device |
| CN113153408A (en) * | 2021-04-10 | 2021-07-23 | 彝良驰宏矿业有限公司 | Method for cooling mine working face by using mine water |
| CN113153408B (en) * | 2021-04-10 | 2024-04-26 | 彝良驰宏矿业有限公司 | Method for cooling mine working face by utilizing mine water |
| CN114439535A (en) * | 2021-12-29 | 2022-05-06 | 陕西正通煤业有限责任公司 | Local refrigeration fan for deep high-temperature mine |
| CN114718630A (en) * | 2022-04-08 | 2022-07-08 | 青阳县来龙方解石矿业有限责任公司 | Environment-friendly cooling treatment system for mine working face |
| CN114718630B (en) * | 2022-04-08 | 2024-07-26 | 青阳县来龙方解石矿业有限责任公司 | Environment-friendly cooling treatment system for mine working face |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106948856A (en) | A kind of mine local cooling device and method | |
| CN108087013B (en) | Mine cooling and heat damage utilization system | |
| CN102121392B (en) | Heat-radiating, recovering and cooling system for mine | |
| CN202690107U (en) | Movable-type ice-water spray cooling apparatus for tunneling working face | |
| CN103216255B (en) | Compressed air cold conveying cooling system for mine and cooling method thereof | |
| CN113090316B (en) | Device and method for controlling temperature reduction and dust removal of roadway driving face | |
| CN102140927B (en) | Method and system for reducing temperature locally under coal mine shaft | |
| CN103410549B (en) | Utilize the System and method for that residual heat of electric power plant is lowered the temperature for mine ventilation | |
| CN201502394U (en) | High-temperature coal mine driving face cold energy configuration system | |
| CN104695998A (en) | Cooling system for water supplied to high-temperature coal working face | |
| CN103089289B (en) | Mine downhole high temperature point cooling device | |
| CN112983528A (en) | Efficient and energy-saving mine cooling and water supply system | |
| CN110905581B (en) | Movable type excavation roadway cooling equipment | |
| CN210422671U (en) | Tunnel type aeration cooling system of high temperature area double-hole tunnel | |
| CN203570340U (en) | Underground coal mine centralized mechanical cooling system based on ground heat dissipation | |
| CN202970756U (en) | Mining liquid nitrogen temperature reducing device | |
| CN104018871A (en) | Coal mine high-temperature tunneling roadway sectional cooling device and method | |
| CN103362530B (en) | To working face cooling and the apparatus and method for utilizing heat energy in a kind of mining process | |
| CN106703113B (en) | A kind of mining TBM water circulation systems and method | |
| CN204238970U (en) | A kind of type pit cooling system based on vortex tube refrigeration | |
| CN111379524B (en) | Raise boring equipment and process for gas cooling and slag discharging in water-deficient environment | |
| CN116044311A (en) | Air directional drilling system and method for underground crushed soft coal layer of coal mine | |
| CN206722755U (en) | A kind of hot cold shock three-level breaks device for coal | |
| CN105756698A (en) | Roadway partial cooling device and roadway partial cooling method | |
| CN204002897U (en) | Mining swirl control cold water dust-proof temp-lowering atomization mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170714 |
|
| RJ01 | Rejection of invention patent application after publication |