Mine heat pump system cooling circulation ventilation equipment

Abstract

The utility model discloses a kind of mine heat pump system cooling circulation ventilation equipment, it is related to mine related equipment technical field.The utility model includes evaporator being at the bottom position of mine and compressor being connected at the cold gas export position of evaporator, the air outlet end of compressor is connected with the condenser of ground by pipeline;The air inlet of evaporator is connected with return air duct, return air duct another end port is equipped with return fan, the upper end surface of return air duct is fixed with air inlet duct, the upper end port of air inlet duct is set in ground position, the other end port of air inlet duct is provided with one-way air baffle, the upper end surface of air inlet duct is equipped with heating fan, the joint of air inlet duct and return air duct is equipped with heat exchange aluminium plate, preheating treatment is carried out to return air by heat exchange aluminium plate, ensure the normal work of evaporator, avoid reducing work efficiency, simultaneously, the installation use of one-way air baffle, avoid the reflux of gas, ensure that fresh air can exist in mine all the time.

Description

Technical Field

[0001] This utility model belongs to the technical field of mining equipment, and in particular relates to a cooling and circulating ventilation device for a mine heat pump system. Background Technology

[0002] With the increasing depth of mining operations, heat hazards underground are becoming increasingly prominent due to factors such as deep geothermal activity, heat dissipation from mechanical equipment, and heat loss from workers' bodies. The high temperature and humidity underground environment not only seriously affects the health and work efficiency of workers but also poses a threat to safe production. Therefore, effective cooling and ventilation of mines to maintain a suitable underground climate has become a critical technical problem that urgently needs to be solved in deep mining. Currently, common mine cooling methods include mechanical refrigeration and ventilation cooling. Among these, heat pump systems have become a highly efficient and energy-saving solution because they can effectively transfer low-grade waste heat resources underground to the surface, achieving a unified cooling and heat dissipation process.

[0003] However, in practical applications, existing mine heat pump ventilation systems still face some technical challenges: in winter or cold regions, the heat recovered from the mine return air is often insufficient to meet the heat required for the efficient operation of the evaporator, leading to a decrease in the heating efficiency of the heat pump system and affecting the stability of the entire cooling cycle. Simultaneously, the system lacks an efficient and integrated heat exchange design during the process of introducing fresh air from the ground and recovering heat from the underground return air, resulting in insufficient heat recovery, significant energy waste, and difficulty in ensuring a continuous supply of fresh air at a suitable temperature underground. Therefore, we provide a mine heat pump system cooling and circulating ventilation device to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide a cooling and circulating ventilation device for a mine heat pump system to solve the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model is a cooling and circulating ventilation device for a mine heat pump system, including an evaporator located at the bottom of the mine and a compressor connected to the cold air outlet of the evaporator. The air outlet of the compressor is connected to a condenser on the ground through a pipe. The air inlet of the evaporator is connected to a return air pipe, and a return air fan is installed at the other end of the return air pipe. An air inlet pipe is fixed to the upper end of the return air pipe, and the upper end of the air inlet pipe is located at the ground. A one-way air vane is installed at the other end of the air inlet pipe. A heating fan is installed on the upper end of the air inlet pipe, and a heat exchange aluminum plate is installed at the junction of the air inlet pipe and the return air pipe.

[0006] As a further description of the above technical solution: both sides of the air intake pipe port inside the mine are fixed with ear plates, and positioning holes are opened through the end face of both ear plates.

[0007] As a further description of the above technical solution: a sealing plate is fixed to the end face of the unidirectional air plate and inserted into the air inlet duct. An inclined plate is bolted to the inner wall of the air inlet duct at the position between the upper port and the heat exchange aluminum plate, and the inclined plate is located above the heat exchange aluminum plate.

[0008] As a further description of the above technical solution: square plates that are respectively connected to ear plates are fixed on both sides of the unidirectional air plate, and positioning rods that pass through the positioning holes are fixed on the side walls of both sets of square plates.

[0009] As a further description of the above technical solution: a baffle is provided on the end face of the positioning rod, and a spring is sleeved on the positioning rod located between the baffle and the ear plate. Both ends of the spring are fixed with abutment rings, and each abutment ring abuts against the side of the baffle and the ear plate respectively.

[0010] As a further description of the above technical solution: each end face of the positioning rod connected to the baffle is provided with a screw hole, and each end face of the baffle is fixed with a screw screwed into the screw hole.

[0011] This utility model has the following beneficial effects: 1. By using heat exchange aluminum plates, heat exchange can be carried out between the return air duct and the inlet air duct. The heat in the return air is insufficient to meet the heat required by the evaporator. Therefore, the heat generated by the heating fan will be blown into the inlet air duct. The heat exchange aluminum plates play a role in neutralizing the temperature of the internal gas in the inlet air duct and the return air duct, thereby increasing the heat of the return air in the return air duct, thus ensuring the normal operation of the evaporator and avoiding a reduction in working efficiency.

[0012] 2. By installing a one-way air deflector at the port of the air intake duct, the port of the one-way air deflector is blocked, allowing air from the bottom of the mine to enter the air intake duct. When the air in the air intake duct blows towards the one-way air deflector, it opens the interface between the one-way air deflector and the air intake duct, allowing outside air to enter the mine, achieving air circulation and preventing backflow, thus ensuring that fresh air is always present in the mine.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional view of the structure and appearance of this utility model.

[0016] Figure 2 This is an external structural diagram of the return air duct and the air inlet duct in this utility model.

[0017] Figure 3 This is a structural diagram of the unidirectional wind vane in this utility model.

[0018] Figure 4 This is a cross-sectional view of the return air duct and the air inlet duct in this utility model.

[0019] The attached diagram lists the components represented by each number as follows: 1. Evaporator; 2. Compressor; 3. Return air duct; 301. Heat exchange aluminum plate; 4. Inlet air duct; 401. Ear plate; 402. Positioning hole; 403. Inclined plate; 5. Return air fan; 6. One-way air vane; 601. Sealing plate; 602. Spring; 603. Square plate; 604. Positioning rod; 605. Screw hole; 606. Abutment ring; 607. Baffle; 608. Screw; 7. Heating fan. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] Example Please see Figures 1 to 4 This utility model embodiment provides a technical solution for a cooling and circulating ventilation device for a mine heat pump system: it includes an evaporator 1 located at the bottom of the mine and a compressor 2 connected to the cold air outlet of the evaporator 1. The outlet of the compressor 2 is connected to a condenser on the ground via a pipe. The air inlet of the evaporator 1 is connected to a return air duct 3. A return air fan 5 is installed at the other end of the return air duct 3. An air inlet duct 4 is fixed to the upper end of the return air duct 3, and the upper end of the air inlet duct 4 is located at the ground. A one-way air vane 6 is installed at the other end of the air inlet duct 4. A heating fan 7 is installed on the upper end of the air inlet duct 4. A heat exchange aluminum plate 30 is installed at the junction of the air inlet duct 4 and the return air duct 3. 1. In winter, the return air fan 5 draws the heat from the working equipment into the return air duct 3. The heat in the return air is insufficient to meet the heat required by the evaporator 1. Therefore, the heat generated by the heating fan 7 is blown into the inlet air duct 4. The heat exchange aluminum plate 301 neutralizes the temperature of the internal gas in the inlet air duct 4 and the return air duct 3, thereby increasing the heat of the return air in the return air duct 3 and enabling the return air to be stably used for the heat exchange process of the evaporator 1. In summer, the heating fan 7 is controlled to work, but the heating function does not need to be activated. It is only necessary to ensure normal ventilation in the inlet air duct 4. The heat generated by the working equipment can be used normally for the heat exchange of the evaporator 1. The one-way air deflector 6 has a sealing plate 601 fixed to its end face, which is inserted into the air intake duct 4. By installing the one-way air deflector 6 at the port of the air intake duct 4, the port of the one-way air deflector 6 is blocked, allowing air from the bottom of the mine to enter the air intake duct 4. When the air in the air intake duct 4 blows towards the one-way air deflector 6, it opens the interface between the one-way air deflector 6 and the air intake duct 4, allowing outside air to enter the mine and achieving air circulation, thus ensuring that air can continuously be stored in the mine. An inclined plate 403 is bolted to the inner wall of the fresh air intake duct 4 at the position between the upper port and the heat exchange aluminum plate 301. The inclined plate 403 is located above the heat exchange aluminum plate 301. The inclined plate 403 is installed on the inner wall of the air intake duct 4 near the heat exchange aluminum plate 301. Therefore, when the outside air enters the air intake duct 4, it will flow from the position below the inclined plate 403, so that the air can fully and completely contact the heat exchange aluminum plate 301, thereby stably preheating the return air. It should be noted that the condenser and cooling tower in the heat pump system are both installed on the ground. Therefore, after the high-temperature and high-pressure gas generated by the compressor 2 enters the condenser and cooling tower, it will be cooled into a gas-liquid mixture and flow back to the evaporator 1.

[0022] Specifically, ear plates 401 are fixed to both sides of the air intake duct 4 inside the mine. Positioning holes 402 are drilled through the end faces of both ear plates 401. Square plates 603, which connect to the ear plates 401, are fixed to both sides of the one-way air deflector 6. Positioning rods 604, passing through the positioning holes 402, are fixed to the side walls of both sets of square plates 603. Baffles 607 are provided on the end faces of the positioning rods 604. Springs 602 are fitted onto the positioning rods 604 located between the baffles 607 and the ear plates 401. Abutment rings 606 are fixed to both ends of the springs 602, and each abutment ring 606 abuts against the side of the baffle 607 and the ear plates 401 respectively. Screw holes 605 are drilled into the end faces of the positioning rods 604 where they connect to the baffles 607. A screw thread is fixed to the end face of the baffles 607 and screwed into the screw holes 605. The screw 608 is positioned so that the air from the air inlet duct 4 blows the one-way air vane 6, causing the one-way air vane 6 to carry the sealing plate 601 out of the air inlet duct 4. The one-way air vane 6 moves the positioning rod 604 in the positioning hole 402 via the square plate 603, and controls the baffle 607 to compress the spring 602. Therefore, when the air blown into the air inlet duct 4 stops blowing the one-way air vane 6, the spring 602 pushes the baffle 607 to reset. Then, the baffle 607 moves the square plate 603, the one-way air vane 6, and the sealing plate 601 back to their initial positions via the positioning rod 604, thereby blocking the air inlet duct 4 again. At the same time, the screw 608 is unscrewed in the screw hole 605, and the baffle 607 can be removed from the positioning rod 604, so that the spring 602 and the one-way air vane 6 can be disassembled separately.

[0023] The operation process of this embodiment is as follows: The return air fan 5 is installed at the working surface of the equipment, thereby drawing the hot air generated by the equipment into the return air duct 3. Meanwhile, the air on the ground is sent into the air inlet duct 4 by the heating fan 7. After the two sets of gases flow in different ducts, the heat exchange aluminum plate 301 used in the process exchanges heat and neutralizes the two sets of gases, thus preheating the gas in the return air duct 3. When the hot air flows past the outer side of the finned tube of the evaporator 1, the low-temperature, low-pressure liquid refrigerant flowing in the evaporator 1 pipe absorbs the heat from the return air and then rapidly evaporates into a low-temperature, low-pressure gas. During this process, the return air is cooled, and the large amount of water vapor it carries condenses into water on the surface of the evaporator 1, thus becoming cooled, dry air, which is discharged from the air outlet in the evaporator 1. The generated low-temperature, low-pressure gaseous refrigerant is then compressed by the compressor 2. The compressor 2 extracts and compresses the refrigerant, consuming electrical energy to do work on it, turning it into a high-temperature, high-pressure gas. The high-temperature, high-pressure refrigerant gas enters the condenser on the ground. On the ground, cooling water or ambient air provided by the cooling tower flows through the condenser, carrying away the heat from the refrigerant. Thus, the high-pressure liquid refrigerant becomes a low-temperature, low-pressure gas-liquid mixture after passing through the expansion valve, and is sent back to the evaporator 1 downhole. In this way, the refrigeration cycle is completed and continues endlessly.

[0024] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cooling and circulating ventilation device for a mine heat pump system, comprising an evaporator (1) located at the bottom of the mine and a compressor (2) connected to the cold air outlet of the evaporator (1), wherein the outlet of the compressor (2) is connected to a condenser on the ground via a pipe; characterized in that: The air inlet of the evaporator (1) is connected to a return air duct (3). A return air fan (5) is installed at the other end of the return air duct (3). An air inlet duct (4) is fixed to the upper end of the return air duct (3). The upper end of the air inlet duct (4) is located on the ground. A one-way air vane (6) is installed at the other end of the air inlet duct (4). A heating fan (7) is installed on the upper end of the air inlet duct (4). A heat exchange aluminum plate (301) is installed at the junction of the air inlet duct (4) and the return air duct (3).

2. The cooling and circulating ventilation equipment for a mine heat pump system according to claim 1, characterized in that, The air intake pipe (4) inside the mine is fixed with ear plates (401) on both sides of the port. The end faces of the two ear plates (401) are provided with positioning holes (402).

3. The cooling and circulating ventilation equipment for a mine heat pump system according to claim 1, characterized in that, The end face of the one-way air plate (6) is fixed with a sealing plate (601) inserted into the air inlet pipe (4). The inner wall of the air inlet pipe (4) is bolted with an inclined plate (403) at the position between the upper port and the heat exchange aluminum plate (301), and the inclined plate (403) is located above the heat exchange aluminum plate (301).

4. A cooling and circulating ventilation device for a mine heat pump system according to claim 2, characterized in that, The two side walls of the one-way wind plate (6) are fixed with square plates (603) that are connected to the ear plate (401) respectively. The side walls of the two sets of square plates (603) are fixed with positioning rods (604) that pass through the inside of the positioning hole (402).

5. A cooling and circulating ventilation device for a mine heat pump system according to claim 4, characterized in that, The end face of the positioning rod (604) is provided with a baffle (607). A spring (602) is sleeved on the positioning rod (604) located between the baffle (607) and the ear plate (401). Both ends of the spring (602) are fixed with abutment rings (606), and each abutment ring (606) abuts against the side of the baffle (607) and the ear plate (401).

6. A cooling and circulating ventilation device for a mine heat pump system according to claim 5, characterized in that, The positioning rod (604) has a screw hole (605) on its end face that is connected to the baffle (607), and the baffle (607) has a screw (608) that is screwed into the screw hole (605) on its end face.

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