Double-cooling system for condensed hot water of mine underground air conditioner

Abstract

The utility model discloses a mine underground air conditioner condensation hot water double cooling system, and belongs to the field of mine underground concentrated refrigeration cooling research. Comprising an imitated boiling cooling system and a spraying cooling system, the imitated boiling cooling system sprays air flow out of a water storage tank from a nozzle through a pipeline by means of a fan, the spraying cooling system downwards forms mist spray through a spraying device by means of a spraying water pump, and the air flow and the water mist are subjected to countercurrent flow heat exchange; therefore, the purpose of quickly cooling condensed hot water is achieved. Condensed hot water generated by the air conditioning equipment is partially cooled by the simulated boiling cooling system, and partially cooled by the spray cooling system. And cooling water circulation is formed. The system is easy to arrange and high in practicability, efficient cooling of underground air conditioner condensation hot water can be achieved, no pipeline needs to be additionally constructed, the engineering cost is saved, cyclic utilization of water resources is achieved, and the problem that the water cooling efficiency of a reservoir is low is solved.

Description

Technical Field

[0001] This utility model relates to the field of centralized cooling and heat dissipation in underground mines, specifically to a dual cooling system for condensed hot water in underground mine air conditioning. Background Technology

[0002] With increasing mining depth and the widespread use of high-power electrical equipment underground, the problem of high-temperature heat hazards in mines has become increasingly prominent. To ensure the safety of coal mine production and improve the working environment for underground workers, technologies related to mine cooling and temperature reduction have been continuously developed. Among these, mechanical refrigeration, which uses refrigeration equipment to continuously provide a cold source to the working face to lower its temperature, has proven effective and is gradually becoming the main means of cooling high-temperature heat-hazardous mines in my country. Based on the location of the refrigeration station, systems can be categorized as: underground centralized refrigeration systems, surface centralized refrigeration systems, combined surface and underground refrigeration systems, and mobile refrigeration systems. Underground centralized refrigeration systems are simple, with short cold air delivery distances and low cold loss, but the difficulty in dissipating condensate heat within the refrigeration station severely restricts the cooling effect.

[0003] Existing technology CN203130042U discloses a return air heat exhaust cooling device for mines, comprising a refrigeration device for cooling the intake airway and working face, and a spray heat exhaust device connected to the refrigeration device and installed in the return airway. By placing the spray heat exhaust device in the return airway instead of on the ground, it eliminates the use of mine water for heat exhaust and the ice refrigeration system, shortening the distance between the refrigeration device and the spray heat exhaust device, and utilizing the natural wind generated in the return airway. However, the cooling effect is poor, and it consumes a large amount of water. Alternatively, a closed cooling tower can be used for heat exhaust, achieving cooling water recycling, but this involves high equipment investment, long cooling distance, and significant cooling loss. The spray cooling system is simple but has limited cooling effect. Utility Model Content

[0004] To address the shortcomings of existing technologies, a dual-cooling system for condensate hot water in underground mine air conditioning is provided. This system is simple and highly practical. Compared to single cooling methods, by combining a simulated boiling cooling system and a spray cooling system, the combined effect of the two systems significantly improves the cooling efficiency of the condensate hot water. The system layout is simple, enabling efficient cooling of condensate hot water in underground mine air conditioning systems within a limited space, without generating additional heat during the cooling process. It also allows for the recycling of air conditioning condensate hot water, saving water resources and avoiding redundant cooling pipelines, resulting in minimal cooling loss. Furthermore, it eliminates the need for additional pipeline construction and cooling tower equipment, thus saving on engineering costs.

[0005] To achieve the above technical objectives, a mine underground air conditioner condensation hot water dual cooling system of the present utility model includes a reservoir, a refrigeration unit is provided on the side of the reservoir, a spray cooling system is provided on the reservoir, and a simulated boiling cooling system is provided in the reservoir. The simulated boiling cooling system includes a blower and a ventilation pipe provided in the reservoir. A plurality of air flow nozzles are provided at intervals on the ventilation pipe, and all the air flow nozzles are vertically directed upward. The ventilation pipe is connected to the blower; the reservoir is connected to a circulating water source through a water supply pipe.

[0006] Furthermore, the spray cooling system includes a spray water pump. The spray water pump is connected to a spray water pipe located at the top of the reservoir. A plurality of spray devices are provided on the spray water pipe, and the spray water pipe is fixed to the roof surrounding rock through fixed buckles.

[0007] Furthermore, the refrigeration unit is connected to an air cooler through a chilled water inlet pipe and a chilled water return pipe. The air cooler is connected to the reservoir through a cooling water inlet pipe and a cooling water return pipe. A chilled water pump is provided on the chilled water inlet pipe, a cooling water pump is provided on the cooling water inlet pipe, and a filter is installed at the inlet of the cooling water inlet pipe; the air cooler is connected to a local ventilator through a ventilation duct.

[0008] Furthermore, the reservoir is arranged in a roadway water storage chamber.

[0009] Furthermore, the ventilation pipe is arranged at the bottom of the reservoir in a "field" shape, and a total of 9 air flow nozzles capable of bulging the air pressure upward from the bottom of the reservoir to cause the water in the reservoir to produce a "boiling" phenomenon are provided at each intersection of the "field".

[0010] Furthermore, the spray devices are arranged on the top of the roadway water storage chamber in a "king" shape through fixed buckles. Taking the spray water pipe as the central axis, 6 spray branch pipes are symmetrically and vertically arranged at equal intervals, and 2 spray nozzles are provided on each spray branch pipe; the number of spray branch pipes and spray nozzles is adjusted according to the size of the reservoir.

[0011] Furthermore, the blower is an explosion-proof device, meeting the explosion-proof requirements of the mine.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. By combining the simulated boiling cooling system and the spray cooling system, the simulated boiling cooling system uses a fan to spray air flow through a pipeline from the nozzles into the reservoir, making the condensation hot water in the reservoir form a state similar to the boiling of hot water, increasing the heat exchange area of the condensation hot water, and achieving the rapid cooling of the condensation hot water through the combined action of the dual systems, greatly improving the cooling efficiency of the condensation hot water and solving the problem of low cooling efficiency of a single cooling system.

[0014] 2. This system is easy to set up and highly practical. It can achieve efficient cooling of condensed hot water from underground air conditioning systems in mines within a limited space, and the cooling process does not generate additional heat.

[0015] 3. This system realizes the recycling of air conditioning condensate hot water, with low water consumption, saving water resources, avoiding redundant water supply pipelines, and minimizing cooling loss.

[0016] 4. This system does not require additional investment in pipelines and cooling towers, thus saving on project costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the dual cooling system for condensed hot water in underground mine air conditioning.

[0018] Figure 2 This is a schematic diagram of the arrangement of the simulated boiling cooling system at the bottom of the water storage tank in this embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the arrangement of the spray cooling system on the top of the water storage tank in this embodiment of the present invention;

[0020] In the diagram, 1-local ventilation fan; 2-air duct; 3-air cooler; 4-chilled water pump; 5-chilled water inlet pipe; 6-chilled water return pipe; 7-refrigeration unit; 8-cooling water inlet pipe; 9-cooling water return pipe; 10-spray water pump; 11-spray water pipe; 12-spray device; 13-spray nozzle; 14-cooling water pump; 15-blower; 16-ventilation duct; 17-airflow nozzle; 18-water supply pipe; 19-water storage tank; 20-fixing clip; 21-filter; 22-surrounding rock. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 As shown, this utility model discloses a dual cooling system for condensing hot water in underground mine air conditioning, including a simulated boiling cooling system and a spray cooling system. The simulated boiling cooling system includes a blower 15, a ventilation pipe 16, and airflow nozzles 17. The spray cooling system includes a spray water pump 10, a spray water pipe 11, and a spray device 12. The refrigeration unit 7 is connected to the air cooler 3 through a chilled water inlet pipe 5 and a chilled water return pipe 6, and is connected to a water storage tank 19 through a cooling water inlet pipe 8 and a cooling water return pipe 9. A chilled water pump 4 is installed on the chilled water inlet pipe 5, and a cooling water pump 14 is installed on the cooling water inlet pipe 8. A filter 21 is installed at the inlet of the cooling water inlet pipe. The air cooler 3 is connected to a local ventilation fan 1 through a duct 2. The water storage tank 19 is equipped with a water supply pipe 18.

[0023] As shown Figure 2 in the figure, the simulated boiling cooling system is arranged at the bottom of the reservoir 19 in a "field shape", and air flow nozzles 17 are installed at the joints.

[0024] As shown Figure 3 in the figure, the spray cooling system is arranged at the upper roof of the reservoir 19 in a "king shape". The spray device 12 is fixed on the roof through the fixed buckle 20, and spray nozzles 13 are installed on the spray device 12.

[0025] The working process of this system is as follows:

[0026] The mine underground air-conditioning condensate hot water dual cooling system efficiently cools the condensate hot water generated by the mine underground air-conditioning. Part of the condensate hot water flows into the reservoir 19 through the cooling water return pipe 9 and is cooled by the simulated boiling cooling system; the other part is pumped into the spray device 12 through the spray water pump 10 via the spray water pipe 11 and is cooled by the spray cooling system. Under the combined action of the dual systems, the cooled low-temperature cooling water is supplied back to the refrigeration unit 7 through the cooling water inlet pipe 8 by the cooling water pump 14, forming a cooling water cycle to achieve the cooling and recycling of the mine underground air-conditioning condensate hot water.

[0027] The simulated boiling cooling system uses a blower to spray air flow from the nozzle 17 into the reservoir 19 through the ventilation pipe 16, making the condensate hot water in the reservoir 19 form a state similar to boiling hot water, increasing the heat exchange area of the condensate hot water and achieving rapid cooling of the condensate hot water. The spray cooling system sprays part of the air-conditioning condensate hot water downward through the spray device 12 by the spray water pump 10, and the air flow and water mist conduct countercurrent heat exchange, thus achieving the purpose of rapid cooling of the condensate hot water. The dual systems work together to achieve efficient cooling of the air-conditioning condensate hot water. The refrigeration unit 7 is connected to the reservoir 19 through the cooling water inlet pipe 8 and the cooling water return pipe 9. The low-temperature cooling water flows into the refrigeration unit 7 through the cooling water inlet pipe 8, absorbs heat to cool the high-temperature chilled water and forms high-temperature cooling water, that is, condensate hot water. Part of the condensate hot water flows into the reservoir 19 through the cooling water return pipe 9, and part is pumped into the spray device 12 through the spray water pump 10 via the spray water pipe 11. The cooled low-temperature cooling water is supplied back to the refrigeration unit 7 through the filter 21 by the cooling water pump 14 via the cooling water inlet pipe 8, forming a cooling water cycle.

Claims

1. A dual-cooling system for condensed hot water in underground mine air conditioning, characterized in that: It includes a reservoir (19), a refrigeration unit (7) is provided on the side of the reservoir (19), a spray cooling system is provided on the reservoir (19), an imitation boiling cooling system is provided in the reservoir (19), the imitation boiling cooling system includes a blower (15) and a ventilation pipe (16) provided in the reservoir (19), a plurality of air flow nozzles (17) are provided at intervals on the ventilation pipe (16), all the air flow nozzles (17) are vertically arranged pointing upwards, and the ventilation pipe (16) is connected to the blower (15); the reservoir (19) is connected to a circulating water source through a water supply pipe (18).

2. The dual cooling system for condensate hot water in underground mine air conditioning as described in claim 1, characterized in that: The spray cooling system includes a spray water pump (10), the spray water pump (10) is connected to a spray water pipe (11) located at the top of the reservoir (19), a plurality of spray devices (12) are provided on the spray water pipe (11), and the spray water pipe (11) is fixed to the roof surrounding rock (22) through a fixing buckle (20).

3. The mine underground air conditioning and condensing hot water dual cooling system according to claim 2, characterized in that: The refrigeration unit (7) is connected to an air cooler (3) through a chilled water inlet pipe (5) and a chilled water return pipe (6), the air cooler (3) is connected to the reservoir (19) through a cooling water inlet pipe (8) and a cooling water return pipe (9), a chilled water pump (4) is provided on the chilled water inlet pipe (5), a cooling water pump (14) is provided on the cooling water inlet pipe (8), and a filter (21) is installed at the inlet of the cooling water inlet pipe (8); the air cooler (3) is connected to a local ventilator (1) through a wind tunnel (2).

4. The mine underground air conditioning and condensing hot water dual cooling system according to claim 1, characterized in that: ​ 5. The mine underground air conditioning and condensing hot water dual cooling system according to claim 1, characterized in that: ​ 6. The mine underground air conditioning and condensing hot water dual cooling system according to claim 2, characterized in that: ​ 7. The mine underground air conditioning and condensing hot water dual cooling system according to claim 1, characterized in that: ​

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