Heat pipe device applied to coal mine ventilation air methane waste heat recovery

Abstract

The utility model relates to the technical field of heat pipes, in particular to a heat pipe device applied to coal mine ventilation air methane waste heat recovery, which comprises a mine body, a first ventilation pipeline is arranged above the inner side of the mine body, and a second ventilation pipeline is arranged at the middle-upper position of the inner side of the mine body. A heat pipe heat exchanger body is arranged on one side of the second ventilation pipeline, an outer frame is integrally formed on the lower left portion of the heat pipe heat exchanger body, and a four-dimensional low-temperature heat pipe is arranged in the middle of the inner side of the heat pipe heat exchanger body. According to the heat pipe device applied to coal mine ventilation air methane waste heat recovery, through the arrangement of the balance fan, the heat pipe heat exchanger body, the air collecting cover, the porous vertical plate and the ventilation air methane exhaust channel, when coal mine ventilation air methane is exhausted, low-grade heat energy in the ventilation air methane can be conveniently recovered and transmitted to a coal mine ventilation shaft through the low-temperature heat pipe in the device, low-temperature supplied air is heated, and the waste heat recovery efficiency is improved. And the purpose of recycling and reusing the low-grade heat energy is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pipes, in particular to a heat pipe device used for recovering waste heat from exhaust air in coal mines. Background Art

[0002] In coal mines, the exhaust air of coal mines is the gas discharged from the mine, which contains a large amount of low-grade heat energy. In winter, the low-temperature air entering the mine needs to be heated to a certain temperature before entering the mine. Generally, electric heating or coal / gas boilers are needed to heat the fresh air, which increases the cost of mine operation and wastes the low-grade heat energy in the exhaust air.

[0003] However, the existing fresh air heating devices consume a large amount of coal, natural gas or electricity every year, which increases the production and operation costs of coal mining enterprises and pollutes the environment. In addition, common heat pipe devices cannot effectively recycle the low-grade thermal energy in the exhaust air. Therefore, in view of the above problems, a heat pipe device for recovering waste heat from exhaust air in coal mines is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a heat pipe device for recovering waste heat from exhaust air in coal mines, so as to solve the problem in the above-mentioned background technology that the starting temperature of the common heat pipe heat exchange device is lower than the exhaust air temperature of the mine, and the waste heat in the exhaust air cannot be recovered by using the common heat pipe.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A heat pipe device used for recovering waste heat from exhaust air in coal mines, comprising a mine body, a first ventilation duct is provided on the upper inner side of the mine body, and a second ventilation duct is provided at the upper middle position of the inner side of the mine body, a heat pipe exchanger body is provided on one side of the second ventilation duct, and an outer frame is provided at the lower left side of the heat pipe exchanger body through integral molding, a four-dimensional low-temperature heat pipe is provided at the middle position of the inner side of the heat pipe exchanger body, a porous vertical plate is provided at one side of the inner side of the outer frame, a side of the outer frame away from the heat pipe exchanger body is connected to an air collecting hood, a monitoring and control system is provided at the other side of the inner side of the outer frame, and a defrost device is installed at the bottom of the heat pipe exchanger body.

[0007] Preferably, the lower left position of the first ventilation duct is connected to an air supply channel, and the air supply channel and the mine body are integrally formed.

[0008] Preferably, the upper half of the heat pipe heat exchanger body is embedded in the inlet end of the air supply channel, and an external ambient air inlet is provided at the upper left position of the mine body.

[0009] Preferably, the lower left position of the second ventilation duct is connected to a lack of air exhaust channel, and the lack of air exhaust channel and the mine body are integrally formed, one side of the lack of air exhaust channel is connected to a lack of air outlet, and a balancing fan is provided at the connection between the lack of air outlet and the lack of air exhaust channel.

[0010] Preferably, the lower half of the heat pipe heat exchanger body is embedded in the interior of the exhaust air passage, and the porous vertical plate is arranged adjacent to the air outlet end of the air collecting hood.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, by arranging a balancing fan, a heat pipe heat exchanger body, an air collecting hood, a porous vertical plate and an exhaust air duct, the heat pipe device used for exhaust air waste heat recovery in a coal mine can recover the low-grade heat energy in the exhaust air through the low-temperature heat pipe in the device and transfer it to the coal mine air supply shaft when the exhaust air in the coal mine is discharged, so as to heat the low-temperature supply air and achieve the purpose of recycling and reusing the low-grade heat energy. In addition, by balancing the fan, the influence of the waste heat recovery device on the resistance of the exhaust air of the original system is balanced. By means of the detection and control system, the air volume, wind pressure and defrosting device are adjusted to ensure the safe and stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 Schematic diagram of the structure at point A.

[0015] In the figure: 1. Mine body; 2. First ventilation duct; 3. Second ventilation duct; 4. Exhaust air exhaust channel; 5. Heat pipe heat exchanger body; 6. Exhaust air outlet; 7. External ambient air inlet; 8. External frame; 9. Four-dimensional low-temperature heat pipe; 10. Multi-porous vertical plate; 11. Wind collecting hood; 12. Monitoring and control system; 13. Defrosting device; 14. Balancing fan; 15. Air supply channel. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-2 , the utility model provides a technical solution:

[0018] A heat pipe device used for waste heat recovery of exhaust air in coal mines, comprising a mine body 1, a first ventilation duct 2 is provided on the upper inner side of the mine body 1, and a second ventilation duct 3 is provided at the upper middle position of the inner side of the mine body 1, a heat pipe heat exchanger body 5 is provided on one side of the second ventilation duct 3, and an outer frame 8 is provided at the lower left side of the heat pipe heat exchanger body 5 through integral molding, a four-dimensional low-temperature heat pipe 9 is provided at the middle position of the inner side of the heat pipe heat exchanger body 5, a porous vertical plate 10 is provided at one side of the inner side of the outer frame 8, an air collecting hood 11 is connected to the side of the outer frame 8 away from the heat pipe heat exchanger body 5, a monitoring and control system 12 is provided at the other side of the inner side of the outer frame 8, and a defrosting device 13 is installed at the bottom of the heat pipe heat exchanger body 5.

[0019] like Figure 1 As shown, the lower left position of the first ventilation duct 2 is connected to an air supply channel 15, and the air supply channel 15 and the mine body 1 are integrally formed. After the air sent into the mine from the external environment air inlet 7 is heat exchanged by the heat pipe heat exchanger body 5, the preheated air will flow to the entrance of the next level channel through the air supply channel 15; the upper half of the heat pipe heat exchanger body 5 is embedded in the entrance end of the air supply channel 15, and the upper left position of the mine body 1 is provided with an external environment air inlet 7. The external ambient air inlet 7 is arranged to facilitate the rapid entry of external air into the mine; the lower left position of the second ventilation duct 3 is connected to the exhaust air channel 4, and the exhaust air channel 4 and the mine body 1 are integrally formed, and one side of the exhaust air channel 4 is connected to the exhaust air outlet 6, and a balancing fan 14 is provided at the connection between the exhaust air outlet 6 and the exhaust air exhaust channel 4. After the heat energy in the exhaust air of the coal mine is recovered and reused, the exhaust air of the coal mine will be smoothly brought out through the start-up operation of the balancing fan 14.

[0020] like Figure 1 and Figure 2 As shown, the lower half of the heat pipe heat exchanger body 5 is embedded in the exhaust air channel 4, and the porous vertical plate 10 is arranged adjacent to the air outlet end of the wind collecting hood 11. When the exhaust air outlet 6 enters the outer frame 8 through the wind collecting hood 11, the porous vertical plate 10 arranged on one side of the four-dimensional low-temperature heat pipe 9 will play a role in uniform flow of the exhaust air entering the coal mine.

[0021] Working process: When used in a mine, the heat pipe device will first be installed in the space reserved between the first ventilation duct 2 and the second ventilation duct 3. When the mine exhaust air is discharged through the wind collecting hood 11, the porous vertical plate 10 and the exhaust air exhaust channel 4 in sequence, and one end of the four-dimensional low-temperature heat pipe 9 is heated, the heat will be transferred from the exhaust air side to the fresh air side along the heat pipe, so that the liquid in the capillary core structure inside the four-dimensional low-temperature heat pipe 9 evaporates and vaporizes. The steam flows to the other end of the heat pipe heat exchanger body 5 under a small pressure difference to release heat and condense into liquid. The liquid then flows back to the evaporation section of the heat pipe heat exchanger body 5 along the capillary force of the groove. The process of heat transfer from one end of the heat pipe to the other end is repeated so that the device can recover the low-grade heat energy in the exhaust air and transfer it to the coal mine air supply shaft to heat the low-temperature supply air, thereby realizing the recovery and reuse of low-grade heat energy.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat pipe device for recovering waste heat from exhaust air in a coal mine, comprising a mine body (1), characterized in that: A first ventilation duct (2) is provided on the upper inner side of the mine body (1), and a second ventilation duct (3) is provided on the upper middle inner side of the mine body (1); a heat pipe heat exchanger body (5) is provided on one side of the second ventilation duct (3), and an outer frame (8) is provided on the lower left side of the heat pipe heat exchanger body (5) through integral molding; a four-dimensional low-temperature heat pipe (9) is provided on the middle inner side of the heat pipe heat exchanger body (5); a multi-porous vertical plate (10) is provided on one side of the inner side of the outer frame (8); a wind collecting hood (11) is connected to the outer frame (8) on one side away from the heat pipe heat exchanger body (5); a monitoring and control system (12) is provided on the other side of the inner side of the outer frame (8); and a defrosting device (13) is installed on the bottom of the heat pipe heat exchanger body (5).

2. A heat pipe device for recovering waste heat from exhaust air in coal mines according to claim 1, characterized in that: The lower left position of the first ventilation duct (2) is connected to an air supply channel (15), and the air supply channel (15) and the mine body (1) are integrally formed.

3. The heat pipe device for recovering waste heat from exhaust air in coal mines according to claim 2 is characterized in that: The upper half of the heat pipe heat exchanger body (5) is embedded in the inlet end of the air supply channel (15), and an external ambient air inlet (7) is provided at the upper left position of the mine body (1).

4. The heat pipe device for recovering waste heat from exhaust air in coal mines according to claim 1 is characterized in that: The lower left position of the second ventilation duct (3) is connected to an exhaust air channel (4), and the exhaust air channel (4) and the mine body (1) are integrally formed. A side position of the exhaust air channel (4) is connected to an exhaust air outlet (6), and a balancing fan (14) is provided at the connection between the exhaust air outlet (6) and the exhaust air channel (4).

5. The heat pipe device for recovering waste heat from exhaust air in coal mines according to claim 3 is characterized in that: The lower half of the heat pipe heat exchanger body (5) is embedded in the interior of the exhaust air channel (4), and the porous vertical plate (10) is arranged adjacent to the air outlet end of the air collecting cover (11).

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