CN206035526U - Liquid CO2 freezing by change of state heat sink of high temperature excavation working face - Google Patents
Liquid CO2 freezing by change of state heat sink of high temperature excavation working face Download PDFInfo
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- CN206035526U CN206035526U CN201620941237.4U CN201620941237U CN206035526U CN 206035526 U CN206035526 U CN 206035526U CN 201620941237 U CN201620941237 U CN 201620941237U CN 206035526 U CN206035526 U CN 206035526U
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- liquid
- delivery pipe
- heat exchanger
- working face
- freezing
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Abstract
The utility model provides a liquid CO2 freezing by change of state heat sink of high temperature excavation working face, belongs to the colliery technical field that cools down in the pit, the utility model discloses a liquid CO2 freezing by change of state heat sink of high temperature excavation working face includes ventilation blower, dryer, liquid CO2 holding vessel, liquid CO2 conveyer pipe, heat exchanger, gaseous state CO2 delivery pipe, the export is established to liquid CO2 holding vessel, and liquid CO2 input port and gaseous state CO2 discharge port are established to the heat exchanger, the ventilation blower passes through the dryer to be connected with heat exchanger one end, and the heat exchanger other end passes through the dryer, and with the excavation working face intercommunication, liquid CO2 holding vessel passes through liquid CO2 conveyer pipe and the liquid CO2 input port connection of heat exchanger, and heat exchanger gaseous state CO2 discharge port is connected with gaseous state CO2 delivery pipe, be equipped with first manometer and first valve in proper order on the liquid CO2 conveyer pipe, be equipped with second valve and second manometer on the gaseous state CO2 delivery pipe in proper order. The device adopts liquid CO2 refrigeration and cooling, reduction in production cost, and the environmental protection can improve production efficiency by a wide margin.
Description
Technical field：
This utility model belongs to underground coal mine falling temperature technique field, more particularly to a kind of high temperature getting working face liquid
CO2Freezing by change of state heat sink.
Background technology：
With the development of China's mining industry, coal mining depth is continuously increased, and high-temperature mine number is consequently increased,
Climatic regionalization problem is more projected, Deep Mine Climatic regionalization problem be increasingly becoming restriction deep exploitation of coal resources it is important because
Element, mine cooling problem are the Tough questions that China's mining faces, and become after top board, gas, water, fire, dust
Six big mine natural calamities.
Traditional falling temperature technique includes two big class of on-mechanical refrigeration cool-down technology and mechanical refrigeration falling temperature technique.On-mechanical freezes
Technology include optimize development arrangement, optimization ventilation network, increase air quantity, controlled circulation wind, power of calming the anger, pre-cooling coal seam,
Completion method manages top board, heat-insulated crag, hot water white-out pipe insulation, stratum heat accumulation comprehensively；Mechanical refrigeration include water cooling system,
Ice cooling system, thermo-electrically-ethylene glycol cryogenic refrigeration cooling system, the light air conditioning chamber of mine, cooling clothes etc..From domestic and international application
From the point of view of situation, Climatic regionalization takes the in the majority of mechanical refrigeration cooling method than more prominent mine.Mechanical refrigeration falling temperature technique Jing
The development for spending decades has become the mine cooling Refrigeration Technique of a comparative maturity, but due to China's refrigeration plant still according to
Bad import, and the popularization of factor the limits mine air conditioner such as the refrigeration plant of import is expensive, power consumption is big.And import equipment
Operation and maintenance cost are very high, cause the refrigeration plant that some coal mining enterprises introduce to lack parts even in idle shape
State.The mine air conditioner refrigeration cool-down technology of China does not obtain preferable effect.
Using liquid CO2As refrigerant, while preferable cooling-down effect is obtained, it is possible to reduce CO2To in air
Discharge capacity, reaches the social benefit and environmental benefit of energy-saving and emission-reduction；CO2Fusing point is -56.57 DEG C, is now turned through vaporization
It is 411.94kJ/kg to release cold when temperature reaches 20 DEG C after being changed to gaseous state, with vaporization rate it is fast, to release cold big etc. excellent
Point, can effectively improve refrigerating efficiency, play a part of cooling.
Utility model content：
In view of the shortcomings of the prior art, this utility model provides a kind of high temperature getting working face liquid CO2Phase transformation
Refrigeration cooling device, using liquid CO2Refrigeration is lowered the temperature, and reduces production cost, and environmental protection greatly improves production efficiency.
For achieving the above object, this utility model is employed the following technical solutions：
A kind of high temperature getting working face liquid CO2Freezing by change of state heat sink, including ventilation blower, air duct, liquid CO2Storage
Tank, liquid CO2Delivery pipe, heat exchanger and gaseous state CO2Delivery pipe；
Described liquid CO2Holding vessel is provided with outlet, and described heat exchanger is provided with liquid CO2Input port and gaseous state CO2Discharge
Mouthful；
Described ventilation blower is connected with heat exchanger one end by air duct, and the described heat exchanger other end passes through air duct and digging
Work surface is connected, described liquid CO2Holding vessel passes through liquid CO2Liquid CO of delivery pipe and heat exchanger2Input port connects, institute
The gaseous state CO of the heat exchanger stated2Floss hole passes through gaseous state CO2Delivery pipe is connected with goaf；
Described liquid CO2In delivery pipe, by liquid CO2Holding vessel is exported to heat exchanger orientation and is sequentially provided with first pressure
Table and the first valve, described gaseous state CO2On delivery pipe, by gaseous state CO2Floss hole is sequentially provided with the second valve to the direction in goaf
Door and second pressure table.
Described heat exchanger includes cooling coil and housing, and described cooling coil is arranged in housing, cooling coil one
End is by liquid CO2Input port and liquid CO2Delivery pipe connects, and the cooling coil other end passes through gaseous state CO2Floss hole and gaseous state
CO2Delivery pipe connects.
Described cooling coil arranges that according to the mode of serpentine coil pipeline external form is star-like heat exchange fin.
The first described valve, for controlling liquid CO2Liquid CO in holding vessel2Flow.
Described first pressure table, for monitoring liquid CO2Holding vessel exit liquid CO2Pressure value.
The second described valve, for controlling liquid CO2Conveying overpressure and gaseous state CO2Discharge.
Described second pressure table, discharges gas CO for monitoring2Pressure value.
Described high temperature getting working face liquid CO2Freezing by change of state heat sink is arranged in tunnel, and wherein, described is logical
Blower fan is installed in intake, and described air duct and heat exchanger are by linking up with hanging in back, described liquid CO2It is defeated
Pipe is sent to be laid on wall.
Described ventilation blower is booster.
Described liquid CO2Conveying outer tube layer is provided with heat-insulation layer.
Described liquid CO2Delivery pipe is in series by some unit transportation pipes, passes through flange between each unit delivery pipe
Disk connects, and ring flange seam is equipped with packing ring.
Described gaseous state CO2Delivery pipe is in series by some unit delivery pipes, by quick between each unit delivery pipe
Joint connects.
Described liquid CO2Delivery pipe compressive resistance is in more than 5MP, not higher than -57 DEG C of heatproof lower limit.
Described ventilation blower is used for providing ventilation power for whole refrigeration cooling device, while also providing for getting working face
It is distinguished and admirable.
Described liquid CO2Delivery pipe is for by liquid CO2Liquid CO in holding vessel2It is transported to the cooler pan of heat exchanger
Pipe.
Described liquid CO2Holding vessel is used for storing liquid CO2。
Described liquid CO2For the refrigerant as whole refrigeration cooling device.
Described air duct is used for conveying by ventilation blower to distinguished and admirable heat exchanger and from heat exchanger to getting working face
Between it is distinguished and admirable.
Described heat exchanger is for by liquid CO2Be converted to gaseous state CO2, while what is discharged in the biphase transformation process of liquid-gas is cold
Measure and be transported to by air duct distinguished and admirable in heat exchanger for cooling, reduce the purpose of airflow temperature.
Described gaseous state CO2Delivery pipe is for by liquid CO2The gaseous state CO be converted to after heat exchanger2Discharge.
Using described high temperature getting working face liquid CO2The method lowered the temperature by freezing by change of state heat sink, including with
Lower step：
Step 1：Start ventilation blower, distinguished and admirable by air duct, Jing heat exchangers are delivered to getting working face；
Step 2：Open the first valve, liquid CO2By liquid CO2Delivery pipe flow to the cooling coil of heat exchanger, together
When, liquid CO is monitored by first pressure table2Holding vessel outlet pressure value, when liquid CO2The pressure value in holding vessel exit is low
When 0.52MPa, liquid CO is changed2Holding vessel；
Step 3：The distinguished and admirable of heat exchanger is flowed through, liquid CO with cooling coil2Heat exchange cooling is carried out, cooling airflow is formed,
Cooling airflow is transported to getting working face by air duct, realizes that getting working face is lowered the temperature；
Step 4：Liquid CO in cooling coil2Undergo phase transition Jing after with distinguished and admirable heat exchange, by liquid CO2It is changed into gaseous state
CO2, and Jing gaseous state CO2Delivery pipe is delivered to goaf.
Liquid CO described in step 22, due to liquid CO2With high pressure, after the first valve is opened, liquid CO2By liquid
State CO2Cooling coil of the delivery pipe active Flow to heat exchanger.
A kind of high temperature getting working face liquid CO that this utility model is provided2Freezing by change of state cool-down method is using liquid CO2
It is converted into gaseous state CO2During the cold energy that discharges reducing flowing through the airflow temperature of heat exchanger, getting working face is reduced with this
Airflow temperature, provide comfortable working environment for staff.
The beneficial effects of the utility model：
1st, CO in commercial production2Exhaust emissions amount is larger, after compressing purification becomes industrial side-product.By its
It is applied to coal mine down-hole refrigeration cooling, it is possible to reduce CO2To the discharge capacity in air, alleviate greenhouse effect, with good ring
Border benefit；
2nd, liquid CO2It is industrial side-product, cost is relatively low, cheap, is applied to coal mine down-hole refrigeration cooling,
Refrigeration cool-down expense can significantly be reduced, the production cost in colliery is reduced, with good economic benefit；
3rd, liquid CO2Fusing point is -56.57 DEG C, is put when now after vaporization is converted to gaseous state, temperature reaches 20 DEG C
It is 411.94kJ/kg to go out cold, has the advantages that vaporization rate is fast, it is big to release cold, can effectively improve refrigerating efficiency；
4th, refrigeration cool-down technology of the present utility model, is to carry out local cooling, purpose for colliery high temperature getting working face
Be comfortable working environment to be provided for staff, ensure healthy, raise labour productivity, compared to traditional air-conditioning system
The cool equipment huge refrigeration expense produced to the cooling of full blast stream, with obvious advantage.
Description of the drawings：
Fig. 1 is high temperature getting working face liquid CO of the present utility model2Freezing by change of state heat sink structural representation；
Wherein, 1- boosters；2- liquid CO2Holding vessel；3- air ducts；4- first pressure tables；5- liquid CO2Delivery pipe；
The first valves of 6-；7- heat exchangers；8- gaseous state CO2Delivery pipe；9- cooling coils；10- housings；11- second pressure tables；12- second
Valve.
Specific embodiment：
With reference to embodiment, the utility model is described in further detail.
Embodiment 1
As shown in figure 1, high temperature getting working face liquid CO2Freezing by change of state heat sink, including booster 1, air duct
3rd, liquid CO2Holding vessel 2, liquid CO2Delivery pipe 5, heat exchanger 7, gaseous state CO2Delivery pipe 8；
Described liquid CO2Holding vessel 2 is provided with outlet, and described heat exchanger 7 is provided with liquid CO2Input port and gaseous state CO2Row
Put mouth；
Described booster 1 is connected with 7 one end of heat exchanger by air duct 3, and described 7 other end of heat exchanger passes through wind
Cylinder 3 is connected with getting working face, described liquid CO2Holding vessel 2 passes through liquid CO2Liquid CO of delivery pipe 5 and heat exchanger 72It is defeated
Entrance connects, the gaseous state CO of described heat exchanger 72Floss hole passes through gaseous state CO2Delivery pipe 8 is connected with goaf；
Described liquid CO2In delivery pipe 5, by liquid CO2Holding vessel is exported to heat exchanger orientation and is sequentially provided with first pressure
Table 4 and the first valve 6, described gaseous state CO2On delivery pipe 8, by gaseous state CO2Floss hole is sequentially provided with to the direction in goaf
Two valves 12 and second pressure table 11.
The first described valve 6, for controlling liquid CO2Liquid CO in holding vessel 22Flow.
Described first pressure table 4, for monitoring liquid CO22 exit liquid CO of holding vessel2Pressure value.
The second described valve 12, for controlling liquid CO2Pressure and gaseous state CO in delivery pipe 52Discharge.
Described second pressure table 11, discharges gas CO for monitoring2Pressure value.
Described heat exchanger 7 includes cooling coil 9 and housing 10, and described cooling coil 9 is arranged in housing 10, cooling
9 one end of coil pipe passes through liquid CO2Input port and liquid CO2Delivery pipe 5 connects, and 9 other end of cooling coil passes through gaseous state CO2Discharge
Mouth and gaseous state CO2Delivery pipe 8 connects.
Described high temperature getting working face liquid CO2Freezing by change of state heat sink is arranged in tunnel, wherein, described office
Portion's ventilation blower 1 is installed in intake, and described air duct 3 and heat exchanger 7 are by linking up with hanging in back, described liquid
State CO2Delivery pipe 5 is laid on wall.
Described cooling coil 9 arranges that according to the mode of serpentine coil pipeline external form is star-like heat exchange fin.
Described liquid CO25 outer layer of delivery pipe is provided with heat-insulation layer.
Described liquid CO2Delivery pipe 5 is in series by some unit transportation pipes, passes through flange between each unit delivery pipe
Disk connects, and ring flange seam is equipped with packing ring.
Described gaseous state CO2Delivery pipe 8 is in series by some unit delivery pipes, by quick between each unit delivery pipe
Joint connects.
Described liquid CO25 compressive resistance of delivery pipe is in more than 5MP, not higher than -57 DEG C of heatproof lower limit.
Described booster 1 is used for providing ventilation power for whole refrigeration cooling device, while being also mining work
Face provides fresh distinguished and admirable.
Described liquid CO2Delivery pipe 5 is for by liquid CO2Liquid CO in holding vessel 22It is transported to the cooling of heat exchanger 7
Coil pipe 9.
Described liquid CO2Holding vessel 2 is used for storing liquid CO2。
Described liquid CO2For the refrigerant as whole refrigeration cooling device.
Described air duct 3 is used for conveying by booster 1 to distinguished and admirable heat exchanger 7 and from heat exchanger 7 to adopting
It is distinguished and admirable between pick work surface.
Described heat exchanger 7 is for by liquid CO2Be converted to gaseous state CO2, while discharge in the biphase transformation process of liquid-gas
Cold is used for cooling and is transported to by air duct 3 distinguished and admirable in heat exchanger 7, reduces the purpose of airflow temperature.
Described gaseous state CO2Delivery pipe 8 is for by liquid CO2The gaseous state CO be converted to after heat exchanger 72It is discharged into and adopts
Dead zone.
Using high temperature getting working face liquid CO2The method lowered the temperature by freezing by change of state heat sink, comprises the following steps：
Step 1：Start booster 1, distinguished and admirable by air duct 3, Jing heat exchangers 7 are delivered to getting working face；
Step 2：Open the first valve 6, liquid CO2Due to high pressure, therefore pass through liquid CO25 active flow of delivery pipe
The cooling coil 9 of heat exchanger 7 is moved, meanwhile, liquid CO is monitored by first pressure table 422 outlet pressure value of holding vessel, when
Liquid CO2When the pressure value in 2 exit of holding vessel is less than 0.52MPa, liquid CO is changed2Holding vessel 2；
Step 3：The distinguished and admirable of heat exchanger 7 is flowed through, liquid CO with cooling coil 92Heat exchange cooling is carried out, cooling wind is formed
Stream, cooling airflow are transported to getting working face by air duct 3, realize that getting working face is lowered the temperature；
Step 4：Liquid CO in cooling coil 92Undergo phase transition Jing after with distinguished and admirable heat exchange, by liquid CO2It is changed into gaseous state
CO2, and Jing gaseous state CO2Delivery pipe 8 is delivered to goaf.
Finally it should be noted that：Above example only to illustrate the technical solution of the utility model, rather than a limitation,
Although being described in detail to this utility model with reference to the foregoing embodiments, those skilled in the art can be to aforementioned each reality
Apply the technical scheme described in example to modify, or carry out equivalent to which part technical characteristic, and these modification or
Person replaces, and does not make the essence of appropriate technical solution depart from the scope of this utility model embodiment technical scheme.
Claims (9)
1. a kind of high temperature getting working face liquid CO2Freezing by change of state heat sink, it is characterised in that including ventilation blower, air duct, liquid
State CO2Holding vessel, liquid CO2Delivery pipe, heat exchanger and gaseous state CO2Delivery pipe；
Described liquid CO2Holding vessel is provided with outlet, and described heat exchanger is provided with liquid CO2Input port and gaseous state CO2Floss hole；
Described ventilation blower is connected with heat exchanger one end by air duct, and the described heat exchanger other end passes through air duct and mining work
Face connects, described liquid CO2Holding vessel passes through liquid CO2Liquid CO of delivery pipe and heat exchanger2Input port connects, described
The gaseous state CO of heat exchanger2Floss hole passes through gaseous state CO2Delivery pipe is connected with goaf；
Described liquid CO2In delivery pipe, by liquid CO2Holding vessel export to heat exchanger orientation be sequentially provided with first pressure table and
First valve, described gaseous state CO2On delivery pipe, by gaseous state CO2Floss hole to the direction in goaf be sequentially provided with the second valve and
Second pressure table.
2. high temperature getting working face liquid CO according to claim 12Freezing by change of state heat sink, it is characterised in that described
Heat exchanger include cooling coil and housing, described cooling coil is arranged in housing, cooling coil one end pass through liquid CO2
Input port and liquid CO2Delivery pipe connects, and the cooling coil other end passes through gaseous state CO2Floss hole and gaseous state CO2Delivery pipe connects.
3. high temperature getting working face liquid CO according to claim 22Freezing by change of state heat sink, it is characterised in that described
Cooling coil arrange that according to the mode of serpentine coil pipeline external form is star-like heat exchange fin.
4. high temperature getting working face liquid CO according to claim 12Freezing by change of state heat sink, it is characterised in that described
High temperature getting working face liquid CO2Freezing by change of state heat sink is arranged in tunnel, wherein, described ventilation blower be installed in into
Air way road, described air duct and heat exchanger are by linking up with hanging in back, described liquid CO2Delivery pipe is laid on lane
Road wall.
5. high temperature getting working face liquid CO according to claim 12Freezing by change of state heat sink, it is characterised in that described
Ventilation blower be booster.
6. high temperature getting working face liquid CO according to claim 12Freezing by change of state heat sink, it is characterised in that described
Liquid CO2Delivery pipe is in series by some unit transportation pipes, is connected by ring flange, ring flange between each unit delivery pipe
Seam is equipped with packing ring.
7. high temperature getting working face liquid CO according to claim 12Freezing by change of state heat sink, it is characterised in that described
Gaseous state CO2Delivery pipe is in series by some unit delivery pipes, is connected by snap joint between each unit delivery pipe.
8. high temperature getting working face liquid CO according to claim 12Freezing by change of state heat sink, it is characterised in that described
Liquid CO2Conveying outer tube layer is provided with heat-insulation layer.
9. high temperature getting working face liquid CO according to claim 12Freezing by change of state heat sink, it is characterised in that described
Liquid CO2Delivery pipe compressive resistance is in more than 5MP, not higher than -57 DEG C of heatproof lower limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620941237.4U CN206035526U (en) | 2016-08-25 | 2016-08-25 | Liquid CO2 freezing by change of state heat sink of high temperature excavation working face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620941237.4U CN206035526U (en) | 2016-08-25 | 2016-08-25 | Liquid CO2 freezing by change of state heat sink of high temperature excavation working face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206035526U true CN206035526U (en) | 2017-03-22 |
Family
ID=58305061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620941237.4U Expired - Fee Related CN206035526U (en) | 2016-08-25 | 2016-08-25 | Liquid CO2 freezing by change of state heat sink of high temperature excavation working face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206035526U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150539A (en) * | 2016-08-25 | 2016-11-23 | 辽宁工程技术大学 | A kind of high temperature getting working face liquid CO2freezing by change of state heat sink and method |
| CN108194122A (en) * | 2017-12-14 | 2018-06-22 | 山东科技大学 | Mining pneumatic formula cooling system |
-
2016
- 2016-08-25 CN CN201620941237.4U patent/CN206035526U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150539A (en) * | 2016-08-25 | 2016-11-23 | 辽宁工程技术大学 | A kind of high temperature getting working face liquid CO2freezing by change of state heat sink and method |
| CN108194122A (en) * | 2017-12-14 | 2018-06-22 | 山东科技大学 | Mining pneumatic formula cooling system |
| CN108194122B (en) * | 2017-12-14 | 2019-12-10 | 山东科技大学 | Pneumatic cooling system for mine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20210825 |