CN213205731U - Underground coal mine heat damage treatment system - Google Patents

Abstract

The utility model relates to a coal mine underground heat damage treatment system, which comprises a refrigerating unit, a separation heat pipe evaporator, a separation heat pipe condenser placed on the ground and a working face cooler used for refrigerating a mining working face; the refrigerating unit comprises an evaporator and a condenser, and the working surface cooler is connected with the evaporator through a first pipeline to form a refrigerating circulation loop; a heat exchange pipeline and an evaporation pipeline are arranged in the separation heat pipe evaporator, the condenser is connected with the heat exchange pipeline in the separation heat pipe evaporator through a second pipeline to form a heat dissipation circulation loop, and the evaporation pipeline of the separation heat pipe evaporator is connected with the separation heat pipe condenser through a third pipeline to form a natural circulation loop. The utility model discloses combined refrigeration cycle return circuit, heat dissipation circulation return circuit and natural circulation return circuit, solved the long, limited technical problem of ventilation volume in the pit of air supply distance, can prolong refrigerating unit's life-span, improved work efficiency, guaranteed the refrigeration effect, reduced system energy resource consumption.

Description

Underground coal mine heat damage treatment system

Technical Field

The utility model relates to a colliery is warm technical field in the pit, especially relates to a colliery is hot evil treatment system in pit.

Background

In the coal mining industry, the environmental conditions of the mining face directly affect the occupational health of the miners, and relevant regulations stipulate that the temperature should not be higher than 26 ℃, but the temperature in some mines can reach over 36 ℃ and be accompanied by high humidity. Wherein, the main heat sources comprise heat dissipation of main and auxiliary mining equipment, oxidation heating of coal beds, heat dissipation of surrounding rocks and the like. Because of the existing heat damage treatment system, cold air is directly blown to the evaporator of the refrigerating unit through the fan, so that the cold air can be sent to a mining working surface only after a long distance; and the equipment is uniformly arranged underground, the underground ventilation volume is limited, so that the heat released by the refrigerating unit cannot be completely and timely dissipated, and the refrigerating unit can be stopped.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the above-mentioned shortcoming, the deficiency of prior art, the utility model provides a colliery is hot evil treatment system in pit, it has solved long, the limited technical problem of ventilation volume in the pit of air supply distance.

(II) technical scheme

In order to achieve the above object, the utility model provides a colliery is heat evil treatment system in pit, it includes:

the system comprises a refrigerating unit, a separation heat pipe evaporator, a separation heat pipe condenser placed on the ground and a working face cooler for refrigerating a mining working face;

the refrigerating unit comprises an evaporator and a condenser which can exchange heat with each other, and the working surface cooler and the evaporator are connected through a first pipeline to form a refrigerating circulation loop; the heat-radiating heat-pipe evaporator is characterized in that a heat-exchanging pipeline and an evaporating pipeline which can exchange heat mutually are arranged in the separating heat-pipe evaporator, the condenser is connected with the heat-exchanging pipeline in the separating heat-pipe evaporator through a second pipeline to form a heat-radiating circulation loop, and the evaporating pipeline of the separating heat-pipe evaporator is connected with the separating heat-pipe condenser through a third pipeline to form a natural circulation loop.

Preferably, the working face cooler comprises an air-water cooler and a first fan, an air outlet of the first fan is connected with an air inlet end of the air-water cooler in a sealing mode, an air outlet end of the air-water cooler is directly communicated with a mining working face, and the air-water cooler is connected with the evaporator through a first pipeline to form the refrigeration cycle loop.

Preferably, the coal mine underground heat damage treatment system further comprises a first temperature sensor, the first temperature sensor is electrically connected with the refrigerating unit, and the refrigerating unit can work according to temperature information detected by the first temperature sensor.

Preferably, one side of the separation heat pipe condenser is provided with a second fan, an air outlet of the second fan is connected with an air inlet end of the separation heat pipe condenser in a sealing manner, and an air outlet end of the separation heat pipe condenser is communicated with the ground environment.

Preferably, the underground coal mine heat damage treatment system further comprises an equipment cooler, the equipment cooler is connected between the working face cooler and the refrigerating unit through a fourth pipeline connected with the first pipeline in parallel, and the equipment cooler is used for cooling mining equipment.

Preferably, a second temperature sensor is arranged on the mining equipment, the second temperature sensor is electrically connected with the equipment cooler, and the equipment cooler can work according to temperature information detected by the second temperature sensor.

Preferably, the system for treating the underground heat damage of the coal mine further comprises a liquid supplementing device, wherein the liquid supplementing device comprises a liquid supplementing box and a liquid supplementing pump, an outlet of the liquid supplementing box is connected with an inlet of the liquid supplementing pump, and an outlet of the liquid supplementing pump is connected with an inlet of the separation heat pipe condenser.

Preferably, the refrigerant in the refrigeration cycle and the heat dissipation cycle is water, ammonia or freon.

Preferably, the outer surfaces of the first pipeline, the second pipeline and the third pipeline are all provided with an anti-corrosion coating.

Preferably, the separation heat pipe evaporator comprises a shell, and the heat exchange pipeline and the evaporation pipeline which are both arranged in the shell, the evaporation pipeline comprises a parallel through hole, a liquid header and a gas header, the liquid header is arranged at the lower end of the shell, the parallel through hole is arranged above the liquid header, the gas header is arranged above the parallel through hole, the liquid header and the gas header are supported and communicated through the parallel through hole, a wire mesh is arranged on the inner wall of the parallel through hole, and a supporting wire mesh is arranged at the top end of the wire mesh; the inlet of the liquid header is connected to the outlet of the separate heat pipe condenser, and the outlet of the gas header is connected to the inlet of the separate heat pipe condenser.

(III) advantageous effects

The utility model has the advantages that: the utility model discloses a colliery is hot evil treatment system in pit has combined refrigeration cycle return circuit, heat dissipation circulation return circuit and natural circulation return circuit, and for prior art, it has solved long, the limited technical problem of volume of ventilating in the pit of air supply distance, has still solved the refrigerated problem of mining equipment, can prolong refrigerating unit's life-span, in time arranges the heat in the pit, has improved work efficiency, has guaranteed the refrigeration effect, has reduced the energy resource consumption of system.

Drawings

FIG. 1 is a schematic structural view of the underground coal mine thermal damage treatment system of the present invention;

FIG. 2 is a schematic structural diagram of the liquid replenishing device and the first temperature sensor in FIG. 1;

fig. 3 is a schematic cross-sectional view of a split heat pipe evaporator according to the present invention.

[ description of reference ]

1: a refrigeration unit; 2: separating the heat pipe evaporator; 21: a housing; 22: a heat exchange line; 23: an evaporation pipeline; 230: a parallel path; 231: a liquid header; 232: a gas header; 24: a wire mesh; 25: supporting the wire mesh; 3: separating the heat pipe condenser; 4: a face cooler; 41: a wind-water cooler; 42: a first fan; 5: an evaporator; 6: a condenser; 7: a first pipeline; 8: a second pipeline; 9: a third pipeline; 10: a first temperature sensor; 11: a second fan; 12: an equipment cooler; 13: a fourth pipeline; 14: a liquid supplementing device; 15: a liquid replenishing box; 16: and (5) a liquid supplementing pump.

A: excavating a working face; b: a ground surface; a: cold air; b: heat; c: a refrigeration cycle loop; d: a heat dissipation circulation loop; f: a natural circulation loop.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings. In which the terms "upper", "lower", etc. are used herein with reference to the orientation of fig. 1.

Referring to fig. 1, the utility model provides a colliery is hot evil treatment system in pit, it includes refrigerating unit 1, separation heat pipe evaporimeter 2, places separation heat pipe condenser 3 above ground B and is used for carrying out refrigerated working face cooler 4 to excavation working face A.

The refrigerating unit 1 comprises an evaporator 5 and a condenser 6 which can exchange heat with each other, and the working surface cooler 4 and the evaporator 5 are connected through a first pipeline 7 to form a refrigerating circulation loop c; a heat exchange pipeline and an evaporation pipeline which can exchange heat mutually are arranged in the separation heat pipe evaporator 2, the condenser 6 is connected with the heat exchange pipeline in the separation heat pipe evaporator 2 through a second pipeline 8 to form a heat dissipation circulation loop d, and the evaporation pipeline of the separation heat pipe evaporator 2 is connected with the separation heat pipe condenser 3 through a third pipeline 9 to form a natural circulation loop f. The refrigeration circulation loop c sends cold water produced by the refrigeration unit 1 to the working face cooler 4 near the excavation working face A, the problem of long air supply distance is solved, the heat dissipation circulation loop d can send heat released by the condenser 6 to the separation heat pipe evaporator 2, and the natural circulation loop f sends the heat to the separation heat pipe condenser 3 on the ground B in a natural circulation mode, so that the limitation of underground ventilation is solved, and the working efficiency of the refrigeration unit is improved.

The first pipeline 7, the second pipeline 8 and the third pipeline 9 are all provided with circulating pumps (not shown), and the circulating pumps refer to circulating liquid pumps for conveying fluid in the device and are used for overcoming the pressure drop of the circulating system. The working principle of the circulating pump is to circulate the fluid, so that the problem of liquid leakage can be solved, energy is saved, and the noise is low.

Referring to fig. 1, the working face cooler 4 includes an air-water cooler 41 and a first fan 42, an air outlet of the first fan 42 is hermetically connected with an air inlet end of the air-water cooler 41, an air outlet end of the air-water cooler 41 is directly connected to the mining working face a, and the air-water cooler 41 is connected with the evaporator 5 through a first pipeline 7 to form a refrigeration cycle loop c, so that the refrigeration capacity can be efficiently transferred to the mining working face a, and the working environment of an operator can be improved.

Further, referring to fig. 2, the coal mine underground thermal hazard treatment system further includes a first temperature sensor 10 (the first temperature sensor 10 may be separately disposed from the air-water cooler 41 and connected to the refrigeration unit 1 through an electric wire to reduce the influence of the air outlet of the air-water cooler 41 on the temperature detection effect of the first temperature sensor 10), the first temperature sensor 10 is electrically connected to the refrigeration unit 1, and the refrigeration unit 1 can operate according to the temperature information detected by the first temperature sensor 10. The refrigerating unit 1 further comprises a controller (not shown), the first temperature sensor 10 can detect the temperature of the mining working face a, the first temperature sensor 10 transmits collected temperature signals to the controller, and the controller controls the refrigerating unit 1 to work according to the temperature signals, wherein the refrigerating unit 1 increases the refrigerating intensity when the temperature collected by the first temperature sensor 10 is higher than 26 ℃; on the contrary, the refrigerating unit 1 maintains the refrigerating strength. According to the real-time temperature detection of the first temperature sensor 10, the controller can adjust the working mode of the refrigerating unit 1, so that the refrigerating effect is guaranteed, the comfort level of an operator is improved, and energy can be saved.

Referring to fig. 1 again, a second fan 11 is disposed on one side of the separation heat pipe condenser 3, an air outlet of the second fan 11 is hermetically connected to an air inlet end of the separation heat pipe condenser 3, and an air outlet end of the separation heat pipe condenser 3 is communicated with the ground environment. The cold air sent by the second fan 11 discharges the heat released by the separation heat pipe condenser 3 into the atmospheric environment on the ground B, so that the heat dissipation efficiency of the separation heat pipe condenser 3 can be improved. After the heat is carried to the ground through the natural circulation loop f, the heat is discharged into the atmospheric environment, and the limitation of the underground ventilation volume is solved.

In addition, the underground coal mine thermal damage treatment system further comprises an equipment cooler 12, the equipment cooler 12 is connected between the working face cooler 4 and the refrigerating unit 1 through a fourth pipeline 13 which is connected with the first pipeline 7 in parallel, and the equipment cooler 12 is used for cooling mining equipment (not shown). Cold water produced by an evaporator 5 of the refrigerating unit 1 is sent to an air-water cooler 41 near a mining working face A through a first pipeline 7, and the cold water exchanges heat in air supplied by a first fan 42 through the air-water cooler 41 to reduce the air temperature; a part of the water is separated again and flows into the fourth pipeline 13, then flows into the equipment cooler 12, the equipment cooler 12 cools the mining equipment again, and the cooled water flows back to the fourth pipeline 13 and finally returns to the evaporator 5 for cooling again. The problem of long air supply distance is solved through the refrigeration cycle loop c, and meanwhile, the problem of cooling of main and auxiliary mining equipment is also solved.

Further, a second temperature sensor (not shown) is provided in the extraction equipment (not shown), the second temperature sensor can be electrically connected to a controller (not shown) of the equipment cooler 12, and the equipment cooler 12 can be operated based on temperature information detected by the second temperature sensor. The second temperature sensor transmits the detected temperature information to the equipment cooler 12, an operator sets a preset temperature for the equipment cooler 12 (the preset temperature is determined according to the actual working condition), and when the detected temperature exceeds the preset temperature, the equipment cooler 12 is started; otherwise, the plant cooler 12 is not started. According to the real-time temperature detection of the second temperature sensor on the mining equipment, the equipment cooler 12 can control the start and stop of the equipment, so that the mining equipment can be cooled, the service life of the mining equipment is prolonged, and energy can be saved.

Furthermore, referring to fig. 2, the coal mine underground thermal hazard treatment system may further include a fluid infusion device 14, the fluid infusion device 14 includes a fluid infusion tank 15 and a fluid infusion pump 16, an outlet of the fluid infusion tank 15 is connected to an inlet of the fluid infusion pump 16, and an outlet of the fluid infusion pump 16 is connected to an inlet of the separation heat pipe condenser 3. In a preferred embodiment, the fluid infusion device 14 may be a constant pressure fluid infusion device, which can maintain the pressure of the system, and the fluid infusion device keeps the frozen water in the water circulation system at a certain level to prevent the occurrence of ice storm due to too little frozen water.

The refrigerant in the refrigeration cycle c and the heat dissipation cycle d is water, ammonia, or freon. The refrigerant is also called as a refrigerant, which is a working medium of a refrigeration cycle, and transfers heat by utilizing the phase change of the refrigerant, namely, the refrigerant absorbs heat when vaporized in the evaporator 5 and releases heat when condensed in the condenser 6.

Further, in the preferred embodiment, the outer surfaces of the first, second, third and fourth pipelines 7, 8, 9, 13 are provided with an anti-corrosion coating. The anticorrosive coating can adopt nanometer anticorrosive coating or 3PE anticorrosive coating, can improve the life of pipeline, and the dust is difficult to adsorb, has reduced the pipeline and has corroded, has improved work efficiency.

Finally, referring to fig. 3, the separation heat pipe evaporator 2 includes a housing 21, and a heat exchange pipe 22 and an evaporation pipe 23 both disposed in the housing, in which the heat exchange pipe 22 can be disposed close to the evaporation pipe 23, the evaporation pipe 23 includes a parallel through hole 230, a liquid header 231, and a gas header 232, a liquid header 231 is disposed at a lower end of the housing 21, a parallel through hole 230 is disposed above the liquid header 231, a gas header 232 is disposed above the parallel through hole 230, the liquid header 231 and the gas header 232 are supported and communicated by the parallel through hole 230, a wire mesh 24 is disposed on an inner wall of the parallel through hole 230, and a support wire mesh 25 is disposed at a top end of the wire mesh 24; the inlet of liquid header 231 is connected to the outlet of separate heat pipe condenser 3 and the outlet of gas header 232 is connected to the inlet of separate heat pipe condenser 3. The inlet of heat exchange line 22 is connected to the outlet of condenser 6 and the outlet of heat exchange line 22 is connected to the inlet of condenser 6.

It should be noted that, in a preferred embodiment, the material of the wire mesh 24 and the supporting wire mesh 25 can be a copper wire mesh or a stainless wire mesh, the mesh number of the wire mesh 24 and the supporting wire mesh 25 is at least 200 meshes, the number of the wire mesh 24 layers is 5-10, and the wire mesh 24 layers are rolled into a ring structure. Liquid enters from the liquid header 231, is fully distributed at the height of the whole parallel through hole 230 under the action of the capillary force of the silk screen 24, and then is uniformly evaporated, so that the heat exchange area is fully utilized, the heat exchange temperature difference is reduced, and the heat exchange efficiency is improved; moreover, the silk screen 24 increases the specific surface area of the evaporation surface, further reduces the heat exchange temperature difference and further improves the heat exchange efficiency.

The working method of the underground coal mine heat damage treatment system comprises the following steps: the refrigerating unit 1 is started, cold water produced by a refrigerant in the evaporator 5 is sent to the air-water cooler 41 of the working face cooler 4 through the first pipeline 7, the air-water cooler 41 carries out cold-heat exchange after the cold water is in flowing contact with air, the cold water absorbs heat in air supplied by the fan A, the air temperature is reduced, and cold air a is directly sent to the working face A through the air outlet end of the air-water cooler 41. The cold water after absorbing heat flows back to the evaporator 5 through the first pipeline 7, or a part of water separated from the first pipeline 7 flows into the fourth pipeline 13 and flows into the equipment cooler 12, the equipment cooler 12 cools the mining equipment, and the cooled water flows back to the fourth pipeline 13 and finally returns to the evaporator 5 to form a refrigeration cycle loop c. The problem of long air supply distance is solved through the first pipeline 7 and the working face cooler 4, and the problem of the cooling of the mining main and auxiliary equipment is solved through the fourth pipeline 13 and the equipment cooler 12.

The condenser 6 and the evaporator 5 in the refrigerating unit 1 exchange heat, the second pipeline 8 sends the heat released by the condenser 6 to the heat exchange pipeline 22 of the separation heat pipe evaporator 2, and the water after heat exchange of the heat exchange pipeline 22 of the separation heat pipe evaporator 2 flows back to the condenser 6 through the second pipeline 8 to form a heat dissipation circulation loop d.

The evaporation pipeline 23 of the separation heat pipe evaporator 2 is connected with the separation heat pipe condenser 3 through the third pipeline 9 to form a natural circulation loop f, the separation heat pipe evaporator 2 carries heat to the separation heat pipe condenser 3 on the ground B in a natural circulation mode, and cold air sent by the second fan 11 discharges the heat B released by the separation heat pipe condenser into the atmospheric environment, so that the limitation of underground ventilation volume is solved.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, alterations, substitutions and variations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A coal mine underground heat damage treatment system is characterized by comprising a refrigerating unit (1), a separation heat pipe evaporator (2), a separation heat pipe condenser (3) placed on the ground (B) and a working face cooler (4) for refrigerating a mining working face (A);

the refrigerating unit (1) comprises an evaporator (5) and a condenser (6) which can exchange heat with each other, and the working surface cooler (4) is connected with the evaporator (5) through a first pipeline (7) to form a refrigerating circulation loop (c); be provided with heat exchange pipeline (22) and evaporation pipeline (23) that can exchange heat each other in separation heat pipe evaporator (2), condenser (6) through second pipeline (8) with heat exchange pipeline (22) in separation heat pipe evaporator (2) are connected and are formed heat dissipation circulation circuit (d), the evaporation pipeline (23) of separation heat pipe evaporator (2) with separation heat pipe condenser (3) are connected through third pipeline (9) and are formed natural circulation circuit (f).

2. The coal mine underground heat damage treatment system according to claim 1, wherein the working face cooler (4) comprises an air-water cooler (41) and a first fan (42), an air outlet of the first fan (42) is hermetically connected with an air inlet end of the air-water cooler (41), an air outlet end of the air-water cooler (41) is directly communicated with a mining working face, and the air-water cooler (41) is connected with the evaporator (5) through the first pipeline (7) to form the refrigeration cycle loop (c).

3. The system for treating the underground heat damage of the coal mine as claimed in claim 2, further comprising a first temperature sensor (10), wherein the first temperature sensor (10) is electrically connected with the refrigerating unit (1), and the refrigerating unit (1) can work according to temperature information detected by the first temperature sensor (10).

4. The underground coal mine thermal hazard treatment system according to claim 1, wherein a second fan (11) is arranged on one side of the separation heat pipe condenser (3), an air outlet of the second fan (11) is connected with an air inlet end of the separation heat pipe condenser (3) in a sealing manner, and an air outlet end of the separation heat pipe condenser (3) is communicated with the ground environment.

5. The system for treating the thermal damage of the underground coal mine according to claim 1, further comprising an equipment cooler (12), wherein the equipment cooler (12) is connected between the working face cooler (4) and the refrigerating unit (1) through a fourth pipeline (13) connected in parallel with the first pipeline (7), and the equipment cooler (12) is used for cooling mining equipment.

6. The system for treating the underground heat damage of the coal mine according to claim 5, wherein a second temperature sensor is arranged on the mining equipment, the second temperature sensor is electrically connected with the equipment cooler (12), and the equipment cooler (12) can work according to temperature information detected by the second temperature sensor.

7. The coal mine underground thermal damage treatment system according to any one of claims 1 to 6, further comprising a liquid supplementing device (14), wherein the liquid supplementing device comprises a liquid supplementing box (15) and a liquid supplementing pump (16), an outlet of the liquid supplementing box (15) is connected with an inlet of the liquid supplementing pump (16), and an outlet of the liquid supplementing pump (16) is connected with an inlet of the separation heat pipe condenser (3).

8. The coal mine underground thermal hazard treatment system as claimed in any one of claims 1 to 6, wherein the refrigerant in the refrigeration cycle (c) and the heat dissipation cycle (d) is water, ammonia or freon.

9. The coal mine underground thermal hazard treatment system as claimed in any one of claims 1 to 6, wherein the outer surfaces of the first pipeline (7), the second pipeline (8) and the third pipeline (9) are all provided with an anti-corrosion coating.

10. The coal mine underground thermal hazard treatment system according to any one of claims 1 to 6, wherein the separation heat pipe evaporator (2) comprises a shell (21) and the heat exchange pipeline (22) and the evaporation pipeline (23) which are both arranged in the shell (21), the evaporation pipeline (23) comprises a parallel through hole (230), a liquid header (231) and a gas header (232), the liquid header (231) is arranged at the lower end of the shell (21), the parallel through hole (230) is arranged above the liquid header (231), the gas header (232) is arranged above the parallel through hole (230), the liquid header (231) and the gas header (232) are supported and communicated through the parallel through hole (230), and a wire mesh (24) is arranged on the inner wall of the parallel through hole (230), a supporting wire mesh (25) is arranged at the top end of the wire mesh (24); the inlet of the liquid header (231) is connected with the outlet of the separation heat pipe condenser (3), and the outlet of the gas header (232) is connected with the inlet of the separation heat pipe condenser (3).

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