Deep underground solution circulating dehumidification cooling system

Abstract

The utility model discloses a kind of deep underground solution circulation dehumidification cooling systems, including heat exchange module, solution dehumidification module and condensing module, solution dehumidification module includes dehumidification tower and regeneration tower, and solution circulation pipeline and solution pump are equipped between dehumidification tower and regeneration tower;By dehumidification, heat reduction, regeneration and condensation recovery process is constructed as closed circulation structure, temperature and humidity linkage adjustment of deep air is realized using heat pump unit and heat pipe network, continuous dehumidification to wet air is realized through the moisture absorption and regeneration process of solution, water vapor separated from air is collected and purified using condensing module, water resource is transformed and recycled in system, air temperature reduction, humidity control and water resource recovery can be realized simultaneously in deep closed environment, external water supplement demand is reduced, energy consumption is reduced, heat and humidity stability of roadway or equipment working environment is guaranteed, to improve the safety and personnel comfort of deep operation, and long-term continuous operation of system is realized.

Description

Technical Field

[0001] This utility model relates to the field of cooling technology in mines, specifically to a solution circulation dehumidification and cooling system for deep underground mines. Background Technology

[0002] Deep underground spaces (such as mine tunnels and underground tunneling areas) commonly suffer from high temperatures, high humidity, and poor air circulation. Due to heat release from the surrounding rock, water vapor evaporation, and the continuous operation of equipment, humidity and temperature in underground spaces accumulate, creating a hot and humid environment. This environment not only reduces the comfort of personnel and affects work efficiency, but also easily causes condensation and corrosion on electrical components of equipment, increasing safety hazards.

[0003] Existing methods for cooling and dehumidifying wells typically include ventilation, dust suppression spraying, and cooling water curtains. However, these methods either have poor humidity control capabilities or further increase air humidity, thus limiting their cooling effect. Meanwhile, water transportation is difficult in deep environments, condensate and dehumidification wastewater cannot be effectively recycled, resulting in high system operating costs and difficulty in long-term stable operation. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a deep underground solution circulation dehumidification and cooling system, comprising a heat exchange module, a solution dehumidification module, and a condensation module. The heat exchange module is connected to the solution dehumidification module and the condensation module through a cold water pipeline. The heat exchange module is connected to the solution dehumidification module through a hot water pipeline. The solution dehumidification module is connected to the condensation module through an air duct. The solution dehumidification module includes a dehumidification tower and a regeneration tower, with a solution circulation pipeline and a solution pump connected between the dehumidification tower and the regeneration tower; The dehumidification tower, regeneration tower, and condensation module are all connected by heat exchange pipelines; The condensation module includes a condensation tower, a purification unit, and a water storage tank. The condensation tower is connected to the purification unit, and the purification unit is connected to the water storage tank. The dehumidification tower, regeneration tower and condensation tower are connected by air ducts, and fans are installed on the air ducts.

[0006] Preferably, the heat exchange module includes a heat pump unit, a heat transfer pipe network, a circulating pump, and a diversion valve. The heat transfer network is connected to the cold end of the heat pump unit. The inlet of the circulating pump is connected to the outlet of the heat pump unit, and the outlet of the circulating pump is connected to the inlet of the diversion valve. The multiple outlets of the diversion valve are connected to the heat exchange coils of the dehumidification tower and the condensation tower, respectively.

[0007] Preferably, the top of the dehumidification tower is equipped with a rotary liquid distributor. A solution pump is installed on the solution circulation pipeline connecting the dehumidification tower and the regeneration tower to drive the solution to form a closed loop between the dehumidification tower and the regeneration tower.

[0008] Preferably, the heat transfer network includes a main pipe and spiral branch pipes, with the spiral branch pipes spirally distributed around the main pipe, and the main pipe connected to the cold end of the heat pump unit.

[0009] Preferably, the outlet of the condenser tower is connected to the purification unit, and the outlet of the purification unit is connected to the water storage tank.

[0010] Preferably, the purification unit includes a sedimentation unit, a filtration unit, and a disinfection unit.

[0011] Compared with existing technologies, this utility model constructs a closed-loop structure for dehumidification, heat reduction, regeneration, and condensation recovery processes. It utilizes a heat pump unit and a heat-conducting pipe network to achieve temperature and humidity linkage regulation of deep air, and achieves continuous dehumidification of humid air through the moisture absorption and regeneration process of the solution. At the same time, it uses a condensation module to collect and purify the water vapor released from the air, enabling water resources to be converted and recycled within the system. This allows for simultaneous reduction of air temperature, humidity control, and water resource recovery in a deep, enclosed environment, reducing the need for external water replenishment, lowering energy consumption, and ensuring the thermal and humidity stability of the working environment in tunnels or equipment. This improves the safety and comfort of deep operations and enables the system to operate continuously for a long period of time. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the deep underground solution circulation dehumidification and cooling system of this utility model. Figure 2 This is a structural block diagram of the deep underground solution circulation dehumidification and cooling system of this utility model.

[0013] In the picture: 10. Heat exchange module; 11. Heat pump unit; 12. Heat transfer network; 20. Solution dehumidification module; 21. Dehumidification tower; 22. Regeneration tower; 23. Liquid distributor; 24. Solution pump; 25. Solution circulation pipeline; 26. Diverter valve; 27. Circulation pump; 30. Condensation module; 31. Condensation tower; 32. Purification unit; 33. Water storage tank; 40. Fan. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1 An embodiment of this utility model provides a solution circulation dehumidification and cooling system for deep underground applications, including a heat exchange module 10, a solution dehumidification module 20, and a condensation module 30. The heat exchange module 10 is connected to the solution dehumidification module 20 and the condensation module 30 through a cold water pipeline. The heat exchange module 10 is connected to the solution dehumidification module 20 through a hot water pipeline. The solution dehumidification module 20 is connected to the condensation module 30 through an air duct.

[0016] The solution dehumidification module 20 includes a dehumidification tower 21 and a regeneration tower 22, and a solution circulation pipeline 25 and a solution pump 24 are provided between the dehumidification tower 21 and the regeneration tower 22. The dehumidification tower 21, regeneration tower 22 and condensation module 30 are all connected by heat exchange pipelines; The condensation module 30 includes a condensation tower 31, a purification unit 32, and a water storage tank 33. The condensation tower 31 is connected to the purification unit 32, and the purification unit 32 is connected to the water storage tank 33. The dehumidification tower 21, regeneration tower 22 and condensation tower 31 are connected by a duct, and a fan 40 is installed on the duct.

[0017] According to the above technical solution, the solution dehumidification module 20 adopts a LiCl-CaCl2 composite moisture-absorbing solution. After absorbing moisture, the solution changes from a concentrated solution to a dilute solution and is regenerated back to a concentrated solution for recycling. The heat-conducting pipe network 12 is connected to the cold end of the heat pump unit 11 to form a cold water pipeline. The inlet of the circulating pump 27 is connected to the cold end outlet of the heat pump unit 11, and the outlet of the circulating pump 27 is connected to the inlet of the diversion valve 26. The multiple outlets of the diversion valve 26 are respectively connected to the heat exchange coils of the dehumidification tower 21 and the condensation tower 31 to provide cooling to the dehumidification section and the condensation section, thereby reducing the temperature of the air entering the tower. The hot end of the heat pump unit 11 is connected to the heat exchange coil of the regeneration tower 22 to form a hot water pipeline, providing heating conditions for the dehydration process of the dilute solution in the regeneration tower 22. By setting the cold-side cooling and hot-side heating independently, the heat and moisture decoupling of the dehumidification process and the regeneration process is realized, so that the concentrated solution moisture absorption and the dilute solution regeneration process can be carried out stably separately.

[0018] Furthermore, during system operation, the blower 40 introduces humid and hot air from deep tunnels or working faces into the dehumidification tower 21. After the air comes into countercurrent contact with the concentrated solution, the humidity decreases, and the concentrated solution is transformed into a dilute solution through moisture absorption. The dilute solution is transported to the regeneration tower 22 by the solution pump 24, where it is dehydrated and regenerated under the heating conditions provided by the hot water provided by the heat pump unit 11. After being restored to a concentrated solution, it returns to the dehumidification tower 21 to continue absorbing moisture. At the same time, the air after dehumidification enters the condensation tower 31 and is further cooled by the action of the low-temperature heat exchange coil, causing the remaining water vapor to condense into condensate. The condensate is treated by the purification unit 32 and stored in the water storage tank 33 for underground water replenishment or reuse. This forms a three-way coordinated closed loop of air circulation, concentrated solution-dilute solution circulation, and condensate recovery circulation.

[0019] In one embodiment, the heat exchange module 10 specifically includes a heat pump unit 11, a heat transfer pipe network 12, a circulating pump 27, and a diversion valve 26. The heat transfer pipe network 12 is connected to the cold end of the heat pump unit 11. The inlet of the circulating pump 27 is connected to the outlet of the heat pump unit 11, and the outlet of the circulating pump 27 is connected to the inlet of the diversion valve 26. The multiple outlets of the diversion valve 26 are connected to the dehumidification tower 21 and the condensation tower 31, respectively.

[0020] According to the above technical solution, the cold end of the heat pump unit 11 is connected to the heat transfer network 12 to form a cold water circulation pipeline. After being pressurized by the circulation pump 27, the cold water is delivered by the diversion valve 26 to the heat exchange coils of the dehumidification tower 21 and the condensation tower 31 respectively to maintain the low temperature conditions of the dehumidification process and the condensation process. The hot end of the heat pump unit 11 forms a hot water circulation pipeline, which is connected to the heat exchange coil in the regeneration tower 22 to heat the dilute solution to dehydrate and regenerate it, forming a separate energy supply path for the cold side and the hot side, realizing the thermal and moisture decoupling of dehumidification and regeneration.

[0021] In one embodiment, specifically, a rotary liquid distributor 23 is provided at the top of the dehumidification tower 21. The solution pump 24 is installed on the solution circulation pipeline 25 connecting the dehumidification tower 21 and the regeneration tower 22, and is used to drive the solution to form a closed loop between the dehumidification tower 21 and the regeneration tower 22.

[0022] According to the above technical solution, the LiCl-CaCl2 solution is evenly distributed on the surface of the packing layer of the dehumidification tower 21 by the rotary distributor 23, and comes into countercurrent contact with the humid air entering from the bottom up, so that the concentrated solution absorbs moisture and becomes a dilute solution; the dilute solution is transported to the regeneration tower 22 by the solution pump 24 for dehydration and regeneration, and after being restored to the concentrated solution, it flows back to the dehumidification tower 21 to form a closed-loop solution circulation.

[0023] In one embodiment, the heat-conducting pipe network 12 includes a main pipe and spiral branch pipes, with the spiral branch pipes spirally distributed around the main pipe, and the main pipe connected to the cold end of the heat pump unit 11.

[0024] According to the above technical solution, the spiral branch pipe is laid in the passage or layout area in the underground working space, so that the cold water coil and the passing air can form sufficient heat exchange contact. This pipe layout can not only supply cooling to the heat exchange coil of dehumidification tower 21 and condensation tower 31, but also help to achieve a larger heat transfer area under limited space conditions, thereby meeting the temperature control requirements of LiCl–CaCl2 solution under dehumidification conditions.

[0025] In one embodiment, specifically, the water outlet of the condenser tower 31 is connected to the purification unit 32, and the water outlet of the purification unit 32 is connected to the water storage tank 33.

[0026] According to the above technical solution, water vapor in the air in the condensation tower 31 condenses into liquid water. After the condensate is discharged from the outlet, it enters the purification treatment unit 32 for sedimentation, filtration and disinfection treatment to remove solid impurities and microorganisms. Then it flows into the water storage tank 33 for centralized storage.

[0027] The collected treated water can be used for dust suppression spraying in mines, equipment cooling water replenishment, or domestic auxiliary water use, realizing the internal water resource recycling of the system and reducing the need for external water replenishment.

[0028] In one embodiment, the purification unit 32 specifically includes a sedimentation unit, a filtration unit, and a disinfection unit.

[0029] According to the above technical solution, the condensate first settles in the settling unit to remove particulate impurities, then filters out small particles and suspended solids through the filtration unit, and finally sterilizes in the disinfection unit so that the treated water meets the requirements for subsequent recycling or discharge according to standards. The three-stage treatment process ensures the cleanliness and usability of the condensate recovery water. The treated condensate can be used to replenish the solution circulation system or for equipment cooling, dust suppression spraying, etc. After further purification and monitoring, the condensate can also be used as a water source for domestic water or other higher standard uses.

[0030] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solution circulation dehumidification and cooling system for deep underground applications, characterized in that, It includes a heat exchange module (10), a solution dehumidification module (20), and a condensation module (30). The heat exchange module (10) is connected to the solution dehumidification module (20) and the condensation module (30) through a cold water pipeline. The heat exchange module (10) is connected to the solution dehumidification module (20) through a hot water pipeline. The solution dehumidification module (20) is connected to the condensation module (30) through an air duct. The solution dehumidification module (20) includes a dehumidification tower (21) and a regeneration tower (22), and a solution circulation pipeline (25) and a solution pump (24) are provided between the dehumidification tower (21) and the regeneration tower (22). The dehumidification tower (21), the regeneration tower (22), and the condensation module (30) are all connected by heat exchange pipelines; The condensation module (30) includes a condensation tower (31), a purification unit (32), and a water storage tank (33). The condensation tower (31) is connected to the purification unit (32), and the purification unit (32) is connected to the water storage tank (33). The dehumidification tower (21), the regeneration tower (22) and the condensation tower (31) are connected by a duct, and a fan (40) is provided on the duct.

2. The deep underground solution circulation dehumidification and cooling system according to claim 1, characterized in that, The heat exchange module (10) includes a heat pump unit (11), a heat conduction pipe network (12), a circulation pump (27), and a diversion valve (26). The heat-conducting pipe network (12) is connected to the cold end of the heat pump unit (11). The inlet of the circulating pump (27) is connected to the outlet of the heat pump unit (11), and the outlet of the circulating pump (27) is connected to the inlet of the diversion valve (26). The multiple outlets of the diversion valve (26) are respectively connected to the dehumidification tower (21) and the condensation tower (31).

3. The deep underground solution circulation dehumidification and cooling system according to claim 1, characterized in that, The top of the dehumidification tower (21) is equipped with a rotary liquid distributor (23). The solution pump (24) is installed on the solution circulation pipeline (25) connecting the dehumidification tower (21) and the regeneration tower (22) to drive the solution to form a closed loop between the dehumidification tower (21) and the regeneration tower (22).

4. A deep underground solution circulation dehumidification and cooling system according to claim 2, characterized in that, The heat-conducting pipe network (12) includes a main pipe and spiral branch pipes. The spiral branch pipes are spirally distributed around the main pipe, and the main pipe is connected to the cold end of the heat pump unit (11).

5. A deep underground solution circulation dehumidification and cooling system according to claim 1, characterized in that, The outlet of the condenser tower (31) is connected to the purification unit (32), and the outlet of the purification unit (32) is connected to the water storage tank (33).

6. The deep underground solution circulation dehumidification and cooling system according to claim 1, characterized in that, The purification unit (32) includes a sedimentation unit, a filtration unit, and a disinfection unit.

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