CN216894490U - Mining refrigerating unit - Google Patents
Mining refrigerating unit Download PDFInfo
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- CN216894490U CN216894490U CN202220161330.9U CN202220161330U CN216894490U CN 216894490 U CN216894490 U CN 216894490U CN 202220161330 U CN202220161330 U CN 202220161330U CN 216894490 U CN216894490 U CN 216894490U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The utility model discloses a mining refrigerating unit, wherein the mining refrigerating unit comprises: the water cooling unit is used for preparing chilled water, is connected with a chilled water pipeline, and is communicated to the coal face to cool the coal face through the chilled water pipeline; the air cooling unit is used for preparing cold air and is connected with the air duct, the air duct is communicated with a tunnel of a mine, and the cold air is communicated into the tunnel through the air duct to cool the tunnel. The utility model solves the problem that the mine refrigeration equipment in the prior art is cooled by cold air alone or cold water alone, so that the energy consumption is high, the refrigeration mode is flexible, and the energy consumption is greatly reduced.
Description
Technical Field
The utility model relates to the technical field of air conditioners, in particular to a mining refrigerating unit.
Background
With the coal mining, the shallow well coal resources in China are gradually reduced, the mining depth is continuously increased, the mining depth of national key coal mines is increased by 9m year, and the deepest coal mine reaches 1000 m. According to the measured data, the global average earth temperature gradient is about 3 ℃/100 m. The reasons for coal mine heat include, among others, increased rock temperature at the mining depth, and heat dissipation from large electromechanical devices. The problem of thermal damage not only worsens the working environment of coal mining, harms the bodies of staff at the production line, but also increases the frequency of coal mine accidents.
Traditional mine refrigeration equipment is cooled by cold air alone or cold water alone. For the area that supplies cold relatively nearer, it is comparatively economical to adopt cold water cooling alone, and for the area that supplies cold relatively far, it is comparatively economical to adopt cold water cooling alone. However, the underground cold supply area of the mine is wide, and the air supply distance is longer and longer along with the continuous propulsion of the mining surface. Therefore, it is necessary to satisfy both short-distance and long-distance cooling demands. The independent adoption of cold air or cold water for cooling all cooling areas can cause large energy consumption of equipment such as fans, water pumps and the like.
Aiming at the problem that the energy consumption is large when mine refrigeration equipment in the related art is cooled by cold air alone or cold water alone, an effective solution is not provided at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a mine refrigerating unit, which at least solves the problem that in the prior art, mine refrigerating equipment is cooled by cold air alone or cold water alone, so that the energy consumption is high.
To solve the technical problem, according to an aspect of an embodiment of the present invention, there is provided a mining refrigeration unit, including:
the water chilling unit is used for preparing chilled water, is connected with a chilled water pipeline, and is communicated to the coal face to cool the coal face through the chilled water pipeline;
the air cooling unit is used for preparing cold air and is connected with the air duct, the air duct is communicated with a tunnel of a mine, and the cold air is communicated into the tunnel through the air duct to cool the tunnel.
Further, the water chiller includes: the first evaporator, the first compressor, the first condenser and the first electronic expansion valve are connected in sequence; wherein the first evaporator is a flooded evaporator; the chilled water line includes: a chilled water inlet pipe and a chilled water return pipe; the chilled water inlet pipe is connected with a chilled water outlet of the water cooling unit, and the chilled water return pipe is connected with a chilled water inlet of the water cooling unit.
Further, still include: and the air cooler is arranged on the coal face, one end of the air cooler is connected with the chilled water inlet pipe, and the other end of the air cooler is connected with the chilled water return pipe and used for cooling the coal face through chilled water.
Further, the air cooling unit includes: the second evaporator, the second compressor, the second condenser and the second electronic expansion valve are connected in sequence; wherein the second evaporator is a direct expansion type evaporator; and the fan is positioned on the first side of the second evaporator, the second side of the second evaporator is connected with the air duct, and the fan is used for blowing cold air into the air duct.
Furthermore, the air duct comprises a first end and a second end, and the first end of the air duct is connected with the second side of the second evaporator; the second end of the air duct is communicated with the coal face and is also used for blowing cold air into the coal face to cool the coal face.
Further, the air duct includes: the first air outlet is positioned on the side surface of the air duct and used for introducing cold air into the roadway; the first air valve is positioned at the first air outlet and used for adjusting the air output quantity of the first air outlet; the second air outlet is positioned at the second end of the air duct and used for introducing cold air into the coal mining working face; and the second air valve is positioned at the second air outlet and used for adjusting the air output of the second air outlet.
Further, the chilled water line includes: a first portion located in the roadway and a second portion located in the coal face; wherein the first part is positioned inside the air duct.
Further, still include: the chilled water inlet temperature sensor is positioned on the chilled water inlet pipe of the second part of the chilled water pipeline and is used for detecting the chilled water inlet temperature of the coal mining working face; and the coal face environment temperature sensor is positioned on the coal face and used for detecting the environment temperature of the coal face.
Furthermore, the outer sides of the chilled water inlet pipe and the chilled water return pipe are both provided with heat insulation materials.
The utility model provides a mining refrigerating unit, which is provided with a water cooling unit and an air cooling unit, wherein the water cooling unit is used for cooling a coal face and belongs to remote refrigeration. The air cooling unit is used for introducing cold air into the tunnel through the air duct to cool the tunnel, and belongs to short-distance refrigeration. Through the combination of the water cooling unit and the air cooling unit, long-distance refrigeration and short-distance refrigeration can be realized, the problem that cold air cooling is independently adopted or cold water is independently adopted for cooling, so that the energy consumption is high is solved, the refrigeration mode is flexible, and the energy consumption is greatly reduced.
Drawings
FIG. 1 is a schematic diagram of an alternative construction of a mining refrigeration unit according to an embodiment of the utility model;
FIG. 2 is a schematic view of an alternative arrangement of a mining refrigeration unit in a mine according to an embodiment of the utility model;
fig. 3 is an alternative structure diagram of the inside of the air duct according to the embodiment of the utility model;
FIG. 4 is an alternative flow diagram of a mining refrigeration unit control method according to an embodiment of the utility model;
fig. 5 is another alternative flow chart of a mining refrigeration unit control method according to an embodiment of the utility model.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the utility model, as detailed in the appended claims.
Example 1
In a preferred embodiment 1 of the present invention, there is provided a mining refrigeration unit, and in particular, fig. 1 shows an alternative schematic structural view of the mining refrigeration unit, as shown in fig. 1, the mining refrigeration unit comprising:
the water cooling unit is used for preparing chilled water, is connected with a chilled water pipeline, and is communicated to the coal face to cool the coal face through the chilled water pipeline;
the air cooling unit is used for preparing cold air, the air cooling unit is connected with the air duct 1, the air duct 1 is communicated with a tunnel of a mine, and the cold air is communicated with the tunnel through the air duct 1 to cool the tunnel.
In the embodiment, a mining refrigerating unit is provided, in which a water cooling unit and an air cooling unit are arranged, and the water cooling unit is used for cooling a coal face and belongs to remote refrigeration. The air cooling unit is used for introducing cold air into the tunnel through the air duct to cool the tunnel, and the tunnel belongs to short-distance refrigeration. Through the combination of the water cooling unit and the air cooling unit, long-distance refrigeration and short-distance refrigeration can be realized, the problem that cold air cooling is independently adopted or cold water is independently adopted for cooling, so that the energy consumption is high is solved, the refrigeration mode is flexible, and the energy consumption is greatly reduced.
As shown in fig. 1, further, the water chiller includes: the first evaporator 2, the first compressor 3, the first condenser 4 and the first electronic expansion valve 5 are connected in sequence; wherein the first evaporator 2 is a flooded evaporator; the air cooling unit includes: a second evaporator 9, a second compressor 10, a second condenser 11 and a second electronic expansion valve 12 which are connected in sequence; wherein the second evaporator 9 is a direct expansion evaporator.
The mining refrigerating unit further comprises a closed cooling tower 18 arranged on the ventilation air side and used for cooling water of the first condenser 4 and the second condenser 11, and further comprises a spray water pump 19 used for cooling as shown in figure 1.
Fig. 2 also shows an alternative arrangement of the mining refrigeration unit in a mine. Fig. 2 shows a schematic connection relationship between the mining refrigeration unit and the air duct 1 and the chilled water pipeline. As shown in fig. 2, the chilled water line includes: a chilled water inlet pipe 6 and a chilled water return pipe 7; wherein, chilled water inlet pipe 6 is connected with the chilled water outlet of water chiller, and chilled water return pipe 7 is connected with the chilled water inlet of water chiller. The chilled water inlet pipe 6 is also provided with a water pump 20.
This mining refrigerating unit still includes: and the air cooler 8 is arranged on the coal face, as shown in fig. 2, one end of the air cooler is connected with the chilled water inlet pipe 6, and the other end of the air cooler is connected with the chilled water return pipe 7 and used for cooling the coal face through chilled water. The air cooler 8 is equivalent to a heat exchanger, wherein a heat exchange tube is arranged, one end of the heat exchange tube is connected with a chilled water inlet tube 6, the other end of the heat exchange tube is connected with a chilled water return tube 7, a heat exchange fan is arranged and located on one side of the heat exchange tube, an air outlet is formed in the other side of the heat exchange tube, the fan blows air to the heat exchange tube, cold air is discharged from the air outlet and blows the air to a coal face.
As shown in fig. 1 and 2, the air cooling unit also includes a fan 13 located on a first side of the second evaporator 9, a second side of the second evaporator 9 is connected to the air duct 1, and the fan is configured to blow cold air into the air duct 1. The air duct 1 comprises a first end and a second end, and the first end of the air duct 1 is connected with the second side of the second evaporator 9; the second end of the air duct 1 is communicated with the coal face and is also used for blowing cold air into the coal face to cool the coal face. Therefore, the air duct 1 in the mining refrigerating unit is arranged in a roadway and is communicated with a coal face, short-distance air supply and long-distance air supply can be realized, and the requirements of short-distance refrigeration and long-distance refrigeration are met.
In order to realize air supply, the air duct 1 includes: the first air outlet 14 is positioned on the side surface of the air duct 1 and used for introducing cold air into the roadway; the first air valve is positioned at the first air outlet 14 and used for adjusting the air output of the first air outlet 14; the second air outlet 15 is positioned at the second end of the air duct 1 and used for introducing cold air into the coal mining working face; and the second air valve is positioned at the second air outlet 15 and used for adjusting the air output of the second air outlet 15. As shown in fig. 2, the first air outlet 14 includes a plurality of, sends into the different positions in tunnel, cools down to whole tunnel, can realize the even air supply. Correspondingly, the first air valve also comprises a plurality of air valves.
In this mining refrigerating unit, the refrigerated water pipeline includes: a first portion located in the roadway and a second portion located in the coal face; wherein the first part is located inside the air duct 1. Fig. 3 shows a schematic structural diagram of the inside of the air duct, as shown in fig. 3, the inside of the air duct 1 includes a chilled water inlet pipe 6 and a chilled water return pipe 7, wherein the chilled water inlet pipe 6 and the chilled water return pipe 7 are provided with heat preservation cotton. The outside of dryer 1 is high temperature and high humidity air, for example, 35 ℃/95%, and cold wind is between inside and the heat preservation pipeline of dryer 1, carries cold wind to the tunnel different positions through the air outlet, cools down the tunnel environment.
A single channel is adopted in the traditional mining unit to transport cooling media, and the problem of large refrigeration loss exists in the high-temperature and high-humidity environment of a mine. Generally, the cold air temperature rise per 100m of air duct reaches 0.8 ℃. In the utility model, a chilled water inlet pipe 6 and a chilled water return pipe 7 are arranged in the air duct 1, and chilled water cooled by a flooded evaporator is sent to an air cooler 8 through the chilled water inlet pipe 6. Because the chilled water inlet pipe 6, the chilled water return pipe 7 outside all are equipped with insulation material 21, and the pipeline is in inside dryer 1, is surrounded by low temperature air. Compared with the traditional scheme, the scheme has a better heat preservation effect. The chilled water enters the air cooler 8, the air is cooled in the air cooler 8, the temperature of the coal face is reduced, then the temperature is raised, and the chilled water returns to the flooded evaporator through the chilled water return pipe 7. The scheme adopts a double-flow-channel design, effectively improves the heat preservation performance of the flow channel and improves the energy-saving effect compared with a single-flow-channel scheme that a freezing water pipeline or an air duct 1 is separately arranged.
In addition, this mining unit still includes: the chilled water inlet temperature sensor 16 is positioned on the chilled water inlet pipe 6 of the second part of the chilled water pipeline and is used for detecting the inlet temperature of the chilled water of the coal mining working face; and the coal face environment temperature sensor 17 is positioned on the coal face and used for detecting the environment temperature of the coal face. And adjusting the operation parameters of the mining refrigerating unit through the inlet water temperature and the environment temperature of the chilled water of the coal face.
In the utility model, the chilled water and the direct-expansion unit are adopted to perform short-distance refrigeration and long-distance refrigeration at the same time, so that the problem of cold supply of a mine with short-distance cold supply demand and long-distance cold supply demand is solved, the cold supply mode is optimized, and the system economy is improved. And moreover, the double-flow-channel design is adopted, the heat insulation performance of the flow channel is improved, the heat insulation problem of the cooling medium flow channel in a high-temperature and high-humidity environment of a mine is solved, and the heat insulation performance of the flow channel in the high-temperature and high-humidity environment of the mine is improved.
Example 2
In a preferred embodiment 2 of the present invention, a control method for a mining refrigeration unit is provided, which is applied to the mining refrigeration unit in the above embodiment 1. Specifically, fig. 4 shows an alternative flow chart of the method, and as shown in fig. 4, the method includes the following steps S402 to S406:
s402: detecting the inlet water temperature and the ambient temperature of the chilled water of the coal face;
s404: if the inlet water temperature of the chilled water and the ambient temperature meet preset conditions, maintaining the current operating parameters of the mining refrigerating unit;
s406: otherwise, adjusting the operation parameters of the mining refrigerating unit according to the inlet water temperature of the chilled water and the ambient temperature.
In the embodiment, a mining refrigerating unit is provided, in which a water cooling unit and an air cooling unit are arranged, and the water cooling unit is used for cooling a coal face and belongs to remote refrigeration. The air cooling unit is used for introducing cold air into the tunnel through the air duct to cool the tunnel, and the tunnel belongs to short-distance refrigeration. Through the combination of the water cooling unit and the air cooling unit, long-distance refrigeration and short-distance refrigeration can be realized, the problem that cold air cooling is independently adopted or cold water is independently adopted for cooling, so that the energy consumption is high is solved, the refrigeration mode is flexible, and the energy consumption is greatly reduced.
Wherein the preset conditions include: the inlet water temperature of the chilled water is higher than a first preset temperature and lower than a second preset temperature, and the ambient temperature is higher than a third preset temperature and lower than a fourth preset temperature; the first preset temperature is lower than the second preset temperature, and the third preset temperature is lower than the fourth preset temperature.
Specifically, the operation parameters of the mining refrigerating unit are adjusted according to the inlet water temperature of chilled water and the environment temperature, and the operation parameters comprise:
the first adjustment scheme: if the inlet water temperature of the chilled water is higher than the first preset temperature and lower than the second preset temperature and the ambient temperature is higher than the fourth preset temperature, closing the first air valve, opening the second air valve and increasing the running frequency of the fan according to the first adjusting step length; at the moment, the thermal load of the mine coal face is higher, cold air produced by the air cooling unit needs to be directly sent to the coal face for refrigeration, and meanwhile, the frequency of the fan is increased, and the refrigerating capacity is improved. The specific control mode is as follows: and closing the first air valve, opening the second air valve and increasing the running frequency of the fan. Typically, the step size of each fan frequency adjustment is 2 Hz.
The second adjustment scheme is as follows: if the inlet water temperature of the chilled water is higher than the first preset temperature and lower than the second preset temperature and the ambient temperature is lower than the third preset temperature, closing the second air valve, opening the first air valve and reducing the running frequency of the fan according to the step length; at the moment, the thermal load of the mine coal face is low, the coal face does not need extra cold air to supplement the refrigerating capacity, and the frequency of a fan needs to be reduced. The specific control mode is as follows: and closing the second air valve, and opening the first air valve to reduce the frequency of the fan. Generally, the step length of each fan frequency adjustment is 2Hz, but other adjustment step lengths can be adopted.
The third adjustment scheme is as follows: if the inlet water temperature of the chilled water is higher than the second preset temperature and the ambient temperature is higher than the fourth preset temperature, increasing the operating frequency of the first compressor according to a second adjusting step length; at the moment, the thermal load of the mine coal face is higher, the main reason is that the cooling capacity of the water cooling unit is insufficient (the water temperature is too high), and the frequency of the first compressor needs to be increased; there is also a possibility that the mine heat load is high, where the frequency of the first compressor is preferentially increased. Typically, the compressor frequency adjustment step size is 2 Hz. By adjusting the frequency of the compressor, the possibility of insufficient cooling capacity of the water cooling system can be eliminated after the inlet water temperature of the chilled water is higher than the first preset temperature and lower than the second preset temperature. And if the ambient temperature is higher than the fourth preset temperature, adjusting according to a first adjusting scheme. And if the ambient temperature is higher than the third preset temperature and lower than the fourth preset temperature, not adjusting.
A fourth adjustment scheme: and if the inlet water temperature of the chilled water is lower than the first preset temperature and the ambient temperature is lower than the third preset temperature, reducing the operating frequency of the first compressor according to the adjustment step length. The water cooling system has sufficient cooling capacity (the water temperature is too low), and the frequency of the first compressor needs to be reduced. Typically, the compressor frequency adjustment step size is 2 Hz.
In a preferred embodiment 2 of the present invention, another mining refrigeration unit control method is further provided, specifically, fig. 5 shows an alternative flowchart of the method, and as shown in fig. 5, the method includes the following steps S501 to S513:
s501: detecting the inlet water temperature and the environment temperature of the freezing water of the coal face;
s502: a < T1< B, T2> D; the first preset temperature A is smaller than the second preset temperature B, and the D is a fourth preset temperature. At the moment, the thermal load of the mine coal face is higher;
s503: closing the first air valve and opening the second air valve; the cold air produced by the air cooling unit is directly sent to the coal face for refrigeration, and the specific control mode is as follows: closing the first air valve and opening the second air valve;
s504: increasing the frequency of the fan; meanwhile, the frequency of the fan is increased, and the refrigerating capacity is improved. Generally, the frequency regulating step length of each fan is 2 Hz;
s505: t1> B, T2> D; at the moment, the thermal load of the mine coal face is higher;
s506: increasing the first compressor frequency; the main reason that the thermal load of the mine coal face is higher is that the cooling capacity of a water cooling unit is insufficient (the water temperature is too high), and the frequency of a first compressor needs to be increased; there is also a possibility that the mine heat load is high, where it is preferable to increase the frequency of the first compressor. Typically, the compressor frequency adjustment step size is 2 Hz. By adjusting the frequency of the compressor, the possibility of insufficient cooling capacity of the water cooling system can be eliminated after the inlet water temperature of the chilled water is higher than the first preset temperature and lower than the second preset temperature. And if the ambient temperature is higher than the fourth preset temperature, adjusting according to the first adjusting scheme. If the ambient temperature is higher than the third preset temperature and lower than the fourth preset temperature, no adjustment is performed;
s507: a < T1< B, C < T2< D; the third preset temperature C is lower than the fourth preset temperature D;
s508: maintaining the current operating parameters; at the moment, the inlet water temperature of the chilled water and the ambient temperature meet preset conditions, and then the current operation parameters of the mining refrigerating unit are kept;
s509: t1< a, T2< C; if the inlet water temperature of the chilled water is lower than the first preset temperature and the ambient temperature is lower than the third preset temperature, the cooling capacity of the water cooling system is sufficient (the water temperature is too low);
s510: reducing the first compressor frequency; at this point, the first compressor frequency needs to be reduced. Typically, the compressor frequency adjustment step size is 2 Hz;
s511: a < T1< B, T2< C; at the moment, the thermal load of the mine coal face is low, and the coal face does not need extra cold air to supplement the refrigerating capacity;
s512: closing the second air valve and opening the first air valve; the specific control mode is as follows: closing the second air valve and opening the first air valve;
s513: the fan frequency is reduced. The second air valve is closed, and after the first air valve is opened, the frequency of the fan needs to be reduced. Generally, the step length of each fan frequency adjustment is 2Hz, but other adjustment step lengths can be adopted.
Through the control mode, the inflow water temperature and the ambient temperature of the chilled water of the coal face are detected, the refrigeration requirement is reflected through the temperature parameter, and then the operation parameter of the mining refrigerating unit is adjusted, and the refrigeration requirement of a mine is met.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
It will be understood that the utility model is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (9)
1. A mining refrigeration unit, comprising:
the water cooling unit is used for preparing chilled water, is connected with a chilled water pipeline, and is communicated to a coal face to cool the coal face through the chilled water pipeline;
the air cooling unit is used for preparing cold air, the air cooling unit is connected with the air duct (1), the air duct (1) is communicated with a roadway of a mine, and the air duct (1) is communicated with the roadway to cool the roadway.
2. The mining refrigeration unit of claim 1, wherein the water chiller unit comprises: the system comprises a first evaporator (2), a first compressor (3), a first condenser (4) and a first electronic expansion valve (5) which are connected in sequence; wherein the first evaporator (2) is a flooded evaporator;
the chilled water line includes: a chilled water inlet pipe (6) and a chilled water return pipe (7); the chilled water inlet pipe (6) is connected with a chilled water outlet of the water cooling unit, and the chilled water return pipe (7) is connected with a chilled water inlet of the water cooling unit.
3. The mining refrigeration unit of claim 2, further comprising:
and the air cooler (8) is arranged on the coal face, one end of the air cooler is connected with the chilled water inlet pipe (6), and the other end of the air cooler is connected with the chilled water return pipe (7) and used for cooling the coal face through chilled water.
4. The mining refrigeration unit of claim 1, wherein the air-cooled unit comprises:
a second evaporator (9), a second compressor (10), a second condenser (11) and a second electronic expansion valve (12) which are connected in sequence; wherein the second evaporator (9) is a direct expansion evaporator;
and the fan (13) is positioned on the first side of the second evaporator (9), the second side of the second evaporator (9) is connected with the air duct (1), and the fan is used for blowing cold air into the air duct (1).
5. The mining refrigeration unit according to claim 4, characterized in that the air duct (1) comprises a first end and a second end, the first end of the air duct (1) being connected with the second side of the second evaporator (9);
the second end of the air duct (1) is communicated with the coal face and is also used for blowing cold air into the coal face to cool the coal face.
6. The mining refrigeration unit according to claim 5, characterized in that the air duct (1) comprises:
the first air outlet (14) is positioned on the side surface of the air duct (1) and is used for introducing cold air into the roadway;
the first air valve is positioned at the first air outlet (14) and used for adjusting the air output of the first air outlet (14);
the second air outlet (15) is positioned at the second end of the air duct (1) and is used for introducing cold air into the coal face;
and the second air valve is positioned at the second air outlet (15) and used for adjusting the air output of the second air outlet (15).
7. The mining refrigeration unit of claim 2, wherein the chilled water line comprises: a first portion located in the roadway and a second portion located in the coal face; wherein the first part is positioned inside the air duct (1).
8. The mining refrigeration unit of claim 7, further comprising:
the chilled water inlet temperature sensor (16) is positioned on the chilled water inlet pipe (6) of the second part of the chilled water pipeline and is used for detecting the temperature of the chilled water inlet of the coal mining working face;
and the coal face environment temperature sensor (17) is positioned on the coal face and used for detecting the environment temperature of the coal face.
9. The mining refrigeration unit according to claim 2, characterized in that the outside of the chilled water inlet pipe (6) and the chilled water return pipe (7) are both provided with thermal insulation material.
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| CN202220161330.9U CN216894490U (en) | 2022-01-20 | 2022-01-20 | Mining refrigerating unit |
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| CN202220161330.9U CN216894490U (en) | 2022-01-20 | 2022-01-20 | Mining refrigerating unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199313A (en) * | 2022-07-20 | 2022-10-18 | 山东琦瑞能源科技有限公司 | Deep well mining refrigerating system with cyclone separator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199313A (en) * | 2022-07-20 | 2022-10-18 | 山东琦瑞能源科技有限公司 | Deep well mining refrigerating system with cyclone separator |
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