Mine underground movable refrigeration and dehumidification unit

Abstract

The utility model relates to the technical field of mine air cooling units, in particular to a mine underground movable refrigerating and dehumidifying unit. The system comprises a mining water chilling unit, an air handling unit, a first water pipeline and a second water pipeline, the air handling unit comprises a finned tube type surface air cooler, a water inlet of the finned tube type surface air cooler is connected with a water outlet of the first water pipeline, and a water outlet of the finned tube type surface air cooler is connected with a water inlet of the second water pipeline. The air handling unit disclosed by the utility model is designed into a movable structure, can move along with a moving surface of an operation area, and only cools and dehumidifies the operation area, so that the investment of equipment and the consumption of energy are reduced; the mining water chilling unit is designed to be of a split structure, so that the mining water chilling unit can be conveniently placed in a place where exhaust air passes through a mine tunnel, condensation heat can be conveniently taken out of the mine tunnel, the condensation temperature of the mining water chilling unit is controlled, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mine air cooling units, in particular to a mobile refrigeration and dehumidification unit underground in a mine. Background Art

[0002] At present, there are two working modes of mining air handling units used in the market: one is to use the exhaust system to cool the whole air before the fresh air is added to the tunnel entrance, and then the air is pressurized by the blower in the tunnel to the staff's working area. The disadvantages of this method are large air processing volume, high energy consumption, and the temperature reduction of the working area is not obvious; the other is to transport chilled water to mines and tunnels. Because the mines and tunnels are too long and too deep, the energy consumption of the chilled water supply system is too high, the heat exchanger in the tunnel is under great pressure, the manufacturing cost of the heat exchanger is too high, and it is easy to leak. Utility Model Content

[0003] In response to the shortcomings of the above-mentioned existing production technology, the present application provides a mobile underground refrigeration and dehumidification unit in a mine, which can provide air with suitable temperature and humidity for the working environment in mines and tunnels, and provide a more comfortable working space for the workers in mines and tunnels; at the same time, the air handling unit can move with the moving surface of the working area, and only cools and dehumidifies the working area, reducing equipment investment and energy consumption.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A mobile refrigeration and dehumidification unit for underground mines, comprising a mining water chiller, an air handling unit, a first water pipeline and a second water pipeline, wherein the air handling unit comprises a fin-tube type surface cooler, the water outlet of the fin-tube type surface cooler is connected to the water inlet of the second water pipeline, and the water inlet of the fin-tube type surface cooler is connected to the water outlet of the first water pipeline;

[0006] The mining chiller comprises a compressor, the exhaust port of the compressor is connected to the air inlet of the oil-gas separator through a pipeline, the air outlet of the oil-gas separator is connected to the air inlet of the fin-tube condenser through a pipeline, the liquid outlet of the fin-tube condenser is connected to the dry filter through a pipeline, the liquid outlet of the dry filter is connected to the main liquid pipe side inlet of the economizer through a pipeline, the main liquid pipe side outlet of the economizer is connected to the liquid inlet of the second expansion valve through a pipeline, the liquid outlet of the second expansion valve is connected to the liquid inlet of the evaporator through a pipeline, the air outlet of the evaporator is connected to the air inlet of the gas-liquid separator through a pipeline, and the air outlet of the gas-liquid separator is connected to the air intake of the compressor through a pipeline. The liquid outlet of the drying filter is connected to the liquid inlet of the first solenoid valve through a pipeline, the liquid outlet of the first solenoid valve is connected to the liquid inlet of the first expansion valve through a pipeline, the liquid outlet of the first expansion valve is connected to the air pipe side inlet of the economizer through a pipeline, the air pipe side outlet of the economizer is connected to the air inlet of the vibration-proof pipe through a pipeline, the air outlet of the vibration-proof pipe is connected to the energy-saving port of the compressor through a pipeline, the water inlet of the evaporator is connected to the first water outlet of the chilled water tank through a pipeline, the water outlet of the evaporator is connected to the first water return port of the chilled water tank through a pipeline, the second water inlet of the chilled water tank is connected to the water outlet of the second water pipeline, and the second water outlet of the chilled water tank is connected to the water inlet of the first water pipeline.

[0007] Furthermore, a filter is arranged in the air inlet passage of the fin-tube type surface cooler, and a blower is arranged in the air outlet passage of the fin-tube type surface cooler.

[0008] Furthermore, the liquid outlet of the oil-gas separator is connected to the air intake port of the compressor through a pipeline, and a third solenoid valve is arranged on the pipeline connected to the liquid outlet of the oil-gas separator.

[0009] Furthermore, an exhaust fan is provided on one side of the fin-tube condenser.

[0010] Furthermore, a first pressure transmitter is provided on the pipeline connected to the liquid outlet of the drying filter.

[0011] Furthermore, a second pressure transmitter is arranged on the pipeline connected to the air intake port of the compressor.

[0012] Furthermore, the liquid outlet of the drying filter is connected to the liquid inlet of the second solenoid valve through a pipeline, the liquid outlet of the second solenoid valve is connected to the liquid inlet of the third expansion valve through a pipeline, and the liquid outlet of the third expansion valve is connected to the air intake of the compressor through a pipeline.

[0013] Furthermore, an internal circulation water pump is arranged on the pipeline connected to the first water outlet of the freezing water tank.

[0014] Furthermore, a flow meter and a fifth solenoid valve are provided on the second water pipeline.

[0015] Furthermore, an external circulation water pump and a fourth solenoid valve are arranged on the first water pipeline.

[0016] The beneficial effects of the utility model are as follows:

[0017] The air handling unit of the utility model is designed as a movable structure, which can move with the moving surface of the working area, and only cools and dehumidifies the working area, reducing the investment in equipment and energy consumption; the mine chiller of the utility model is designed as a split structure, which is convenient for placing the mine chiller in the place where the mine tunnel exhaust passes, which is conducive to taking the condensed heat out of the mine tunnel, controlling the condensation temperature of the mine chiller, and reducing energy consumption; the connecting pipes of the mine chiller and the air handling unit adopt multiple quick-connect insulation hoses, which can be connected according to the mine chiller The distance between the unit and the air handling unit can be adjusted freely; the external circulation water pump of the mining chiller adopts a variable frequency water pump, and the control system automatically adjusts the frequency of the variable frequency water pump according to the detected external circulation water flow rate to ensure the water supply capacity of the chilled water and the refrigeration effect of the unit; the finned tube condenser of the mining chiller and the finned tube surface cooler of the air handling unit are designed with a large fin spacing, and the unit has a strong dust resistance; the refrigeration system of the mining chiller improves the energy efficiency and high temperature adaptability of the unit by adding economizers and adding suction port sprays. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a working principle diagram of the utility model.

[0019] Among them: 1. compressor; 2. oil-gas separator; 3. exhaust fan; 4. fin-tube condenser; 5. drying filter; 6. first pressure transmitter; 7. first solenoid valve; 8. first expansion valve; 9. economizer; 11. second expansion valve; 12. evaporator; 13. gas-liquid separator; 14. second solenoid valve; 15. third expansion valve; 16. second pressure transmitter; 17. third solenoid valve; 18. vibration-proof pipe; 19. internal circulation water pump; 20. chilled water tank; 21. external circulation water pump; 22. fourth solenoid valve; 23. flow meter; 24. fifth solenoid valve; 25. first water pipeline; 26. second water pipeline; 27. filter; 28. fin-tube surface cooler; 29. ​​blower. DETAILED DESCRIPTION

[0020] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0021] like Figure 1 As shown, a mobile refrigeration and dehumidification unit for underground mines includes a mining chiller, an air handling unit, and a first water pipe 25 and a second water pipe 26 for connecting the chiller and the air handling unit.

[0022] like Figure 1As shown, the air handling unit is a movable unit, which is arranged at a workplace. The air handling unit includes a fin-tube cooler 28, the outlet of which is connected to the inlet of the second water pipe 26, and the inlet of which is connected to the outlet of the first water pipe 25.

[0023] like Figure 1 As shown, a filter 27 is provided in the air inlet passage of the fin-tube cooler 28, and the filter 27 filters the hot and humid air entering the fin-tube cooler 28. A blower 29 is provided in the air outlet passage of the fin-tube cooler 28, and the blower 29 can pressurize the cooled and dehumidified air and send it into the working environment to cool and dehumidify the working environment.

[0024] like Figure 1 As shown, the mining chiller is placed where the mine tunnel exhaust passes, and the mining chiller includes a compressor 1, the exhaust port of the compressor 1 is connected to the air inlet of the oil-gas separator 2 through a pipeline, the air outlet of the oil-gas separator 2 is connected to the air inlet of the fin-tube condenser 4 through a pipeline, the liquid outlet of the fin-tube condenser 4 is connected to the drying filter 5 through a pipeline, the liquid outlet of the drying filter 5 is connected to the main liquid pipe side inlet of the economizer 9 through a pipeline, the main liquid pipe side outlet of the economizer 9 is connected to the liquid inlet of the second expansion valve 11 through a pipeline, the liquid outlet of the second expansion valve 11 is connected to the liquid inlet of the evaporator 12 through a pipeline, the air outlet of the evaporator 12 is connected to the air inlet of the gas-liquid separator 13 through a pipeline, and the air outlet of the gas-liquid separator 13 is connected to the air intake of the compressor 1 through a pipeline.

[0025] like Figure 1 As shown, the liquid outlet of the oil-gas separator 2 is connected to the air intake port of the compressor 1 through a pipeline, and a third solenoid valve 17 is arranged on the pipeline connected to the liquid outlet of the oil-gas separator 2, and the third solenoid valve 17 can control the on-off of the pipeline.

[0026] like Figure 1 As shown, an exhaust fan 3 is arranged on one side of the fin-tube condenser 4, and the exhaust fan 3 can blow the air flowing through the fin-tube condenser 4 into the surrounding air.

[0027] like Figure 1 As shown, a first pressure transmitter 6 is provided on the pipeline connected to the liquid outlet of the drying filter 5. The first pressure transmitter 6 detects the pressure of the unit at all times and transmits it to the control system. The control system automatically adjusts according to the detected pressure signal.

[0028] like Figure 1As shown, the liquid outlet of the drying filter 5 is connected to the liquid inlet of the first solenoid valve 7 through a pipeline, the liquid outlet of the first solenoid valve 7 is connected to the liquid inlet of the first expansion valve 8 through a pipeline, the liquid outlet of the first expansion valve 8 is connected to the air pipe side inlet of the economizer 9 through a pipeline, the air pipe side outlet of the economizer 9 is connected to the air inlet of the vibration-proof pipe 18 through a pipeline, and the air outlet of the vibration-proof pipe 18 is connected to the energy-saving port of the compressor 1 through a pipeline. The vibration-proof pipe 18 is used to reduce the vibration of the compressor 1 transmitted to the pipeline of the economizer 9.

[0029] like Figure 1 As shown, the liquid outlet of the drying filter 5 is connected to the liquid inlet of the second solenoid valve 14 through a pipeline, the liquid outlet of the second solenoid valve 14 is connected to the liquid inlet of the third expansion valve 15 through a pipeline, and the liquid outlet of the third expansion valve 15 is connected to the air intake of the compressor 1 through a pipeline.

[0030] like Figure 1 As shown, a second pressure transmitter 16 is provided on the pipeline connected to the air intake port of the compressor 1. The second pressure transmitter 16 detects the pressure of the unit at all times and transmits it to the control system. The control system automatically adjusts according to the detected pressure signal.

[0031] like Figure 1 As shown, the water inlet of the evaporator 12 is connected to the first water outlet of the chilled water tank 20 through a pipeline, and the water outlet of the evaporator 12 is connected to the first water return port of the chilled water tank 20 through a pipeline. The second water inlet of the chilled water tank 20 is connected to the water outlet of the second water pipe 26, and the second water outlet of the chilled water tank 20 is connected to the water inlet of the first water pipe 25.

[0032] like Figure 1 As shown, an internal circulation water pump 19 is arranged on the pipeline connected to the first water outlet of the chilled water tank 20 , and the internal circulation water pump 19 provides power to make the chilled water circulate between the evaporator 12 and the chilled water tank 20 to cool the chilled water in the chilled water tank 20 .

[0033] like Figure 1 As shown, an external circulation water pump 21 and a fourth electromagnetic valve 22 are arranged on the first water pipeline 25. The fourth electromagnetic valve 22 can control the on-off of the pipeline, and the external circulation water pump 21 provides power for the flow of cold water.

[0034] like Figure 1 As shown, a flow meter 23 and a fifth solenoid valve 24 are provided on the second water pipeline 26. The flow meter 23 can display the flow rate of the external circulation water, and the fifth solenoid valve 24 can control the on-off of the pipeline.

[0035] The first water pipe 25 and the second water pipe 26 are insulated hoses with quick-connect joints. The lengths of the first water pipe 25 and the second water pipe 26 can be freely adjusted according to the distance between the mining chiller and the air handling unit.

[0036] The working principle of the utility model is as follows: during operation, the high-temperature and high-pressure oil-gas mixture discharged by the compressor 1 enters the oil-gas separator 2, and after the oil and gas are separated in the oil-gas separator 2, the separated lubricating oil returns to the compressor 1, and the separated high-temperature and high-pressure refrigerant gas enters the fin-tube condenser 4, and the high-temperature and high-pressure refrigerant gas condenses and releases heat in the fin-tube condenser 4 to become a high-temperature and high-pressure refrigerant liquid. The heat released by the condensation of the refrigerant is taken away by the air flowing through the fin-type condenser 4, and is sent into the surrounding air by the exhaust fan 3, and the high-temperature The high-pressure refrigerant liquid is filtered by the drying filter 5 and divided into three paths. The first path is connected to the low-pressure suction port of the compressor 1. The on-off of the second solenoid valve 14 is automatically controlled according to the exhaust temperature of the compressor 1 to control the exhaust temperature of the compressor 1. The second path enters the main liquid pipe side of the economizer 9 for supercooling. The third path flows to the first expansion valve 8 through the first solenoid valve 7. After throttling by the first expansion valve 8, it enters the gas pipe side of the economizer 9 to vaporize and absorb heat to supercool the refrigerant in the main liquid pipe. The refrigerant that absorbs heat and vaporizes in the economizer 9 flows out of the economizer 9 and enters the energy-saving port of the compressor 1. The supercooled refrigerant liquid flows to the second expansion valve 11, and becomes a low-temperature and low-pressure gas-liquid two-phase mixture after being throttled by the second expansion valve 11. The low-temperature and low-pressure gas-liquid two-phase mixture enters the evaporator 12, and the refrigerant liquid vaporizes and absorbs heat in the evaporator 12, absorbing heat from the cold water flowing through the evaporator 12 to cool the cold water. After the refrigerant vaporizes in the evaporator 12, it flows to the gas-liquid separator 13, and is sucked into the compressor 1 after gas-liquid separation in the gas-liquid separator 13, and is discharged after being pressurized to enter the next cycle. At this time, the internal circulation water pump 19 is started, and the internal circulation water pump 19 provides power to circulate the chilled water between the evaporator 12 and the chilled water tank 20, so as to cool the chilled water in the chilled water tank 20. The unit is designed with a first pressure transmitter 6 and a second pressure transmitter 16. The first pressure transmitter 6 and the second pressure transmitter 16 detect the unit pressure at all times and transmit it to the control system. The control system automatically adjusts according to the detected pressure signal; when the pressure parameter is abnormal and reaches the warning value and an accident occurs, the unit is shut down due to a fault or a protective operation is performed, and an alarm signal is issued.

[0037] The mine chiller is connected to the air handling unit through the first water pipe 25 and the second water pipe 26. When the air handling unit is running, the external circulation water pump 21 of the mine chiller is started, and the first solenoid valve 22 and the second solenoid valve 24 are opened to provide chilled water to the air handling unit. The hot and humid air in the workplace is filtered by the filter 27 and enters the finned tube cooler 28. The hot and humid air exchanges heat with the finned tube cooler 28. After the hot and humid air is cooled and dehumidified, it is pressurized by the blower 29 and sent into the working environment to cool and dehumidify the working environment. A flow meter 23 is installed on the external circulation water pipeline. The control system automatically adjusts the frequency of the external circulation water pump 21 according to the detected external circulation water flow rate to ensure the water supply capacity of the chilled water and the refrigeration effect of the unit.

[0038] The air handling unit of the utility model is designed as a movable structure, which can move with the moving surface of the working area, and only cools and dehumidifies the working area, reducing the investment in equipment and energy consumption. The utility model is designed as a split structure for placing the mine chiller in the place where the mine tunnel exhaust passes, which is conducive to taking the condensed heat out of the mine tunnel, controlling the condensation temperature of the mine chiller, and reducing energy consumption. The connecting pipes of the mine chiller and the air handling unit adopt multiple quick-connect insulation hoses, which can be freely adjusted according to the distance between the mine chiller and the air handling unit. The external circulation water pump of the mine chiller adopts a variable frequency water pump, and the control system automatically adjusts the frequency of the variable frequency water pump according to the detected external circulation water flow rate, to ensure the water supply capacity of the chilled water and the refrigeration effect of the unit. The finned tube condenser of the mine chiller and the finned tube surface cooler of the air handling unit are designed with a large fin spacing, and the unit has a strong dust resistance. The refrigeration system of the mining chiller improves the energy efficiency and high temperature adaptability of the unit by adding economizers and adding liquid spray at the suction port.

[0039] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A mobile refrigeration and dehumidification unit for underground mines, comprising a mining water chiller, an air handling unit, a first water pipeline (25) and a second water pipeline (26), characterized in that: The air handling unit comprises a fin-tube surface cooler (28), the water outlet of the fin-tube surface cooler (28) being connected to the water inlet of the second water pipeline (26), and the water inlet of the fin-tube surface cooler (28) being connected to the water outlet of the first water pipeline (25); The mining chiller comprises a compressor (1), the exhaust port of the compressor (1) is connected to the air inlet of an oil-gas separator (2) through a pipeline, the air outlet of the oil-gas separator (2) is connected to the air inlet of a finned tube condenser (4) through a pipeline, the liquid outlet of the finned tube condenser (4) is connected to a drying filter (5) through a pipeline, the liquid outlet of the drying filter (5) is connected to the main liquid pipe side inlet of an economizer (9) through a pipeline, the main liquid pipe side outlet of the economizer (9) is connected to the liquid inlet of a second expansion valve (11) through a pipeline, the liquid outlet of the second expansion valve (11) is connected to the liquid inlet of an evaporator (12) through a pipeline, the air outlet of the evaporator (12) is connected to the air inlet of a gas-liquid separator (13) through a pipeline, the air outlet of the gas-liquid separator (13) is connected to the air intake of the compressor (1) through a pipeline, and the air outlet of the gas-liquid separator (13) is connected to the air intake of the compressor (1) through a pipeline. The liquid outlet of the filter (5) is connected to the liquid inlet of the first solenoid valve (7) through a pipeline, the liquid outlet of the first solenoid valve (7) is connected to the liquid inlet of the first expansion valve (8) through a pipeline, the liquid outlet of the first expansion valve (8) is connected to the air pipe side inlet of the economizer (9) through a pipeline, the air pipe side outlet of the economizer (9) is connected to the air inlet of the vibration-proof pipe (18) through a pipeline, the air outlet of the vibration-proof pipe (18) is connected to the energy-saving port of the compressor (1) through a pipeline, the water inlet of the evaporator (12) is connected to the first water outlet of the freezing water tank (20) through a pipeline, the water outlet of the evaporator (12) is connected to the first water return port of the freezing water tank (20) through a pipeline, the second water inlet of the freezing water tank (20) is connected to the water outlet of the second water pipeline (26), and the second water outlet of the freezing water tank (20) is connected to the water inlet of the first water pipeline (25).

2. The mobile refrigeration and dehumidification unit for underground mines according to claim 1, characterized in that: A filter (27) is arranged in the air inlet passage of the fin-tube surface cooler (28), and a blower (29) is arranged in the air outlet passage of the fin-tube surface cooler (28).

3. A mobile refrigeration and dehumidification unit for underground mines as claimed in claim 2, characterized in that: The liquid outlet of the oil-gas separator (2) is connected to the air intake port of the compressor (1) via a pipeline, and a third solenoid valve (17) is provided on the pipeline connected to the liquid outlet of the oil-gas separator (2).

4. A mobile refrigeration and dehumidification unit for underground mines as claimed in claim 3, characterized in that: An exhaust fan (3) is provided on one side of the fin-tube condenser (4).

5. The mobile refrigeration and dehumidification unit for underground mines as claimed in claim 4, characterized in that: A first pressure transmitter (6) is provided on the pipeline connected to the liquid outlet of the drying filter (5).

6. The mobile refrigeration and dehumidification unit for underground mines as claimed in claim 5, characterized in that: A second pressure transmitter (16) is provided on the pipeline connected to the air intake port of the compressor (1).

7. The mobile refrigeration and dehumidification unit for underground mines according to claim 6, characterized in that: The liquid outlet of the drying filter (5) is connected to the liquid inlet of the second solenoid valve (14) through a pipeline, the liquid outlet of the second solenoid valve (14) is connected to the liquid inlet of the third expansion valve (15) through a pipeline, and the liquid outlet of the third expansion valve (15) is connected to the air intake of the compressor (1) through a pipeline.

8. The mobile refrigeration and dehumidification unit for underground mines according to claim 7, characterized in that: An internal circulation water pump (19) is provided on a pipeline connected to the first water outlet of the freezing water tank (20).

9. The mobile refrigeration and dehumidification unit for underground mines according to claim 8, characterized in that: A flow meter (23) and a fifth solenoid valve (24) are provided on the second water pipeline (26).

10. The mobile refrigeration and dehumidification unit for underground mines according to claim 9, characterized in that: An external circulation water pump (21) and a fourth solenoid valve (22) are provided on the first water pipeline (25).

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