Centralized refrigeration distributed cooling system

Abstract

The utility model provides a centralized refrigeration distributed cooling system. The centralized refrigeration distributed cooling system comprises a plurality of refrigerating units arranged at the mine mouth, a cold air pipe with one end connected to the refrigerating units and the other end extending into the main roadway and the mining area, and a multi-machine combined control system used for controlling independent operation and adjustment of the refrigerating units. The valves are connected to the cold air pipes and located in the mining areas, and the monitoring stations are arranged in the mining areas and used for monitoring environment data and regulating and controlling operation of the valves. According to the utility model, the problems of scattered mine underground operation places, complex terrains and diversified mining requirements, especially difficulty in ventilation and heat extraction of a single-end tunneling roadway without penetrating air flow can be solved.

Description

Technical Field

[0001] This utility model relates to the field of metal mining technology, and in particular to a centralized refrigeration distributed cooling system. Background Technology

[0002] Currently, mine cooling technology has developed into a variety of cooling technologies and systems, including centralized surface cooling, centralized underground cooling, hybrid air conditioning systems combining surface and underground systems, and decentralized local air conditioning systems underground.

[0003] However, current mine cooling technologies still face numerous challenges. Traditional mine cooling systems suffer from high energy consumption, enormous operating costs, and low energy efficiency. Furthermore, some cooling systems have complex structures, are cumbersome to install, and difficult to maintain, requiring urgent improvement. In complex geological conditions and deep mining environments, existing technologies struggle to meet demands, resulting in unsatisfactory cooling effects. For example, while ice-cooling systems have been successfully applied in several high-temperature mines, the actual operating energy efficiency of their pre-cooling units is far below design efficiency, necessitating energy efficiency diagnostics and analysis to improve cooling efficiency. Although some progress has been made in centralized mine cooling and distributed cooling technologies, such as the application of air-cooled, water-cooled, and ice-cooled systems, research on system optimization design, equipment reliability, and intelligent control remains insufficient and requires further strengthening. Utility Model Content

[0004] The purpose of this utility model is to provide a centralized cooling distributed cooling system to solve the problem of ventilation and heat dissipation difficulties in underground mining operations, complex terrain, and diversified mining needs, especially in single-heading tunnels without through airflow.

[0005] The technical solution of this utility model is: a centralized cooling distributed cooling system, deployed in a mine, the mine including a main roadway, a mine entrance connected to one end of the main roadway, and multiple mining areas connected to the main roadway. The centralized cooling distributed cooling system includes multiple refrigeration units deployed at the mine entrance, a cold air pipe with one end connected to the refrigeration unit and the other end extending into the main roadway and mining area, a multi-unit joint control system for controlling and adjusting the independent operation of the multiple refrigeration units, valves connected to the cold air pipe and located in each mining area, and a monitoring station located in each mining area for monitoring environmental data and regulating the operation of the valves.

[0006] Preferably, the main tunnel is also equipped with an axial flow fan for pressurizing the cold air duct.

[0007] Preferably, the cold air duct includes a first duct, a second duct, and a third duct. The number of first ducts is equal to the number of refrigeration units and they are connected in a one-to-one correspondence. One end of each of the first ducts is connected to one end of the second duct, and the other end of the second duct extends into the main roadway. The third duct is provided in each mining area and is connected to the second duct. The valve is located on the third duct.

[0008] Preferably, the first pipes are connected to the second pipes via a multi-way valve.

[0009] Preferably, the end of the refrigeration unit furthest from the cold air duct is connected to a heat exhaust pipe, which extends from the mine entrance.

[0010] Preferably, the refrigeration unit includes a frame and a cooling assembly mounted on the frame. One end of the cooling assembly is provided with a hot air outlet, and the other end of the cooling assembly is provided with a cold air outlet, which is connected to the cold air duct.

[0011] Preferably, the cooling assembly includes a frame mounted on the vehicle frame, a refrigeration electronic control system mounted on the frame, and a cooling fan, condenser, filter, compressor, evaporator, and blower disposed within the frame and electrically connected to the refrigeration electronic control system. A hot air outlet is provided at one end of the frame, and a cold air outlet is provided at the other end. The cooling fan is positioned near the hot air outlet, and the blower is positioned near the cold air outlet. The condenser is positioned adjacent to the cooling fan, and the evaporator is positioned adjacent to the blower. The evaporator is connected to the filter and compressor via a first pipe, the compressor is connected to the condenser via a second pipe, and the condenser is connected to the evaporator via a third pipe.

[0012] Preferably, an expansion valve is provided on the third pipeline; a pressure controller is connected between the second pipeline and the first pipeline.

[0013] Preferably, the vehicle frame includes a trailer frame, a trailer jack located at one end of the trailer frame, a tire assembly located at the other end of the trailer frame, and movable outriggers located around the trailer frame, with the cooling assembly located on the trailer frame.

[0014] Compared with related technologies, the beneficial effects of this utility model are as follows:

[0015] I. This utility model can achieve efficient cooling: The refrigeration units in the distributed system can implement personalized cooling regulation strategies based on the unique environmental parameters of each working area, including temperature, humidity and air volume. Through efficient energy saving and environmental protection emission reduction technologies, the temperature and humidity of the mine working face can be precisely controlled, thereby significantly improving work efficiency and safety.

[0016] II. This utility model achieves energy saving and consumption reduction: In the centralized refrigeration distributed cooling system, each refrigeration unit can operate and adjust independently, and provide cooling according to the actual cooling demand of the area. When the cooling demand of a specific area decreases, the corresponding refrigeration unit can automatically reduce the cooling power or even stop operating. This measure significantly reduces energy waste. Compared with the traditional centralized refrigeration system, the daily power consumption is reduced by about 30%.

[0017] Third, this utility model offers flexible layout: the refrigeration units of the centralized cooling distributed cooling system can be dispersed and arranged near various mining areas, tunneling faces, or other areas requiring cooling, according to the actual conditions of the mine. In areas with narrow roadways and limited space, smaller and more compact refrigeration units are more suitable. For mines where mining areas frequently change, the refrigeration units need to be easily movable and repositioned to flexibly adapt to changes in mining conditions. This flexible layout allows the distributed cooling system to better meet the specific needs of different mines, improving the system's applicability and reliability.

[0018] IV. This utility model can reduce cooling loss: The centralized refrigeration distributed cooling system effectively shortens the refrigerant transportation distance by dispersing the refrigeration units near the working area (mine entrance), thereby improving the cooling efficiency. Attached Figure Description

[0019] Figure 1 A schematic diagram of the centralized refrigeration distributed cooling system provided by this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of a refrigeration fan unit;

[0021] Figure 3 This is a schematic diagram of the cooling assembly.

[0022] Figure 4 A schematic diagram illustrating the working principle of the cooling assembly.

[0023] In the attached diagram: 100, heat exhaust pipe; 200, refrigeration unit; 1000, chassis; 1001, movable outriggers; 1002, tire assembly; 1003, trailer jack; 1004, trailer frame; 2000, cooling assembly; 2001, hot air vent; 2002, radiator fan; 2003, condenser; 2004, filter; 2005, compressor; 2006, frame; 2007, evaporator; 2008, blower; 2009, refrigeration electronic control system. ; 2010, Cold air outlet; 211, Pressure controller; 212, Expansion valve; 213, First pipeline; 214, Second pipeline; 215, Third pipeline; 300, Multi-machine joint control system; 400, Cold air duct; 401, First pipeline; 402, Second pipeline; 403, Third pipeline; 404, Multi-port valve; 500, Valve; 600, Monitoring station; 700, Axial flow fan; 800, Mine shaft; 801, Mine entrance; 802, Main roadway; 803, Mining area. Detailed Implementation

[0024] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0025] like Figure 1 As shown in the figure, this embodiment provides a centralized cooling distributed cooling system deployed in a mine 800. The mine 800 includes a main roadway 802, a mine entrance 801 connected to one end of the main roadway 802, and multiple mining areas 803 connected to the main roadway 802. The centralized cooling distributed cooling system includes multiple cooling units 200 deployed at the mine entrance 801, a cold air duct 400 with one end connected to the cooling unit 200 and the other end extending into the main roadway 802 and the mining area 803, a multi-unit joint control system 300 for controlling and adjusting the independent operation of the multiple cooling units 200, valves 500 connected to the cold air ducts 400 and located in each mining area 803, a monitoring station 600 located in each mining area 803 for monitoring environmental data and regulating the operation of the valves 500, and an axial flow fan 700 located in the main roadway 802 for pressurizing the cold air ducts 400. The end of the refrigeration unit 200 furthest from the cold air duct 400 is connected to a heat exhaust pipe 100, which extends from the mine entrance 801. The heat exhaust pipe 100 is used to exhaust the hot air generated in the cooling assembly 2000, ensuring the normal heat dissipation of components such as the compressor 2005 and condenser 2003, and exhausting the hot air to a well-ventilated location to reduce the local ambient temperature.

[0026] The multi-unit integrated control system 300 enables each refrigeration unit 200 to operate and adjust independently. Based on monitoring data such as temperature, humidity, and airflow from the monitoring station 600, which feeds back to the multi-unit integrated control system 300, the refrigeration unit 200 can monitor the environmental parameters of the operating area in real time and automatically adjust operating parameters such as cooling capacity and refrigerant flow according to preset control strategies. This achieves precise cooling of the operating area and further improves cooling efficiency.

[0027] The cooling duct 400 includes a first duct 401, a second duct 402, a multi-way valve 404, and a third duct 403. The number of first ducts 401 is equal to the number of refrigeration units 200 and they are connected one-to-one. Multiple first ducts 401 are connected to second ducts 402 via multi-way valves 404. The other end of the second duct 402 extends into the main roadway 802. Each mining area 803 is evenly distributed with the third ducts 403, and the third ducts 403 communicate with the second ducts 402. The valve 500 is installed on the third duct 403.

[0028] The cold air duct 400 delivers the cold air generated by the cooling assembly 2000 to the target area, realizing air conditioning and cooling functions. The delivery range and intensity of the cold air can be controlled by adjusting the opening of the air outlet regulating valve.

[0029] The multi-way valve 404 is a custom-made component with multiple ports. The first pipe 401 and the second pipe 402 are connected to the corresponding ports. The multi-way valve 404 connects the first pipes 401 of the air outlets of multiple refrigeration units 200 together.

[0030] The monitoring station 600 monitors data such as temperature, humidity, and air volume in a designated area and coordinates with the mine dispatch system to determine whether construction is underway. By adjusting the opening or closing of valve 500, the station can precisely cool the designated area.

[0031] When the second pipeline 402 transports goods over a long distance, pressure loss occurs along the way, resulting in insufficient air pressure. An axial flow fan 700 is then used to boost the air pressure in the second pipeline 402. The axial flow fan 700 is connected to the second pipeline 402.

[0032] like Figure 2 As shown, the refrigeration unit 200 includes a frame 1000 and a cooling assembly 2000 mounted on the frame 1000. One end of the cooling assembly 2000 is provided with a hot air outlet 2001, and the other end of the cooling assembly 2000 is provided with a cold air outlet 2010. The cold air outlet 2010 is connected to the cold air duct 400.

[0033] The vehicle frame 1000 includes a trailer frame 1004, a trailer jack 1003 located at one end of the trailer frame 1004, a tire assembly 1002 located at the other end of the trailer frame 1004, and movable support legs 1001 arranged around the trailer frame 1004. The cooling assembly 2000 is mounted on the trailer frame 1004. During transportation and relocation, the refrigeration unit 200 raises and adjusts the movable support legs 1001 to ensure that it does not touch the ground during transportation or relocation. When the refrigeration unit 200 arrives at the designated site, the movable support legs 1001 are lowered to make contact with the ground to form effective support.

[0034] When the trailer frame 1004 is towed by an external power source (such as a forklift), the height of the trailer jack 1003 is adjusted in conjunction with the tire assembly 1002 to make the refrigeration unit 200 reach the required level, thus ensuring the stability and working performance of the equipment.

[0035] like Figure 3 , Figure 4 As shown, the cooling assembly 2000 includes a frame 2006 mounted on the vehicle frame 1000, a refrigeration electronic control system 2009 mounted on the frame 2006, and a cooling fan 2002, a condenser 2003, a filter 2004, a compressor 2005, an evaporator 2007, and a blower 2008 disposed within the frame 2006 and electrically connected to the refrigeration electronic control system 2009. A hot air outlet 2001 is provided at one end of the frame 2006, and a cold air outlet 2010 is provided at the other end of the frame 2006. The cooling fan 2002 is positioned near the hot air outlet 2001, and the blower 2008 is positioned near the cold air outlet 2010. The condenser 2003 is positioned adjacent to the cooling fan 2002, and the evaporator 2007 is positioned adjacent to the blower 2008. The evaporator 2007 is connected to the filter 2004 and the compressor 2005 via a first pipe 213. The compressor 2005 is connected to the condenser 2003 via a second pipe 214, and the condenser 2003 is connected to the evaporator 2007 via a third pipe 215. An expansion valve 212 is provided on the third pipe 215. A pressure controller 211 is connected between the second pipe 214 and the first pipe 213.

[0036] The compressor 2005 draws refrigerant from the low-pressure zone, compresses it, and sends it to the high-pressure zone for cooling and condensation. The refrigerant releases heat into the air through the heat sink, changing from a gaseous to a liquid state, and its pressure increases. The refrigerant then flows from the high-pressure zone to the low-pressure zone, is injected into the evaporator 2007 through a capillary tube, and its pressure drops sharply. The liquid refrigerant immediately turns into a gaseous state and absorbs a large amount of heat from the air through the heat sink.

[0037] In condenser 2003, cooling fan 2002 accelerates airflow, causing the high-temperature, high-pressure refrigerant gas to dissipate heat to the surrounding environment, gradually cooling and liquefying. The liquefied refrigerant passes through filter 2004 to remove any impurities. The filtered liquid refrigerant then passes through expansion valve 212, which acts as a throttling and pressure-reducing valve, lowering the pressure of the liquid refrigerant. Upon entering evaporator 2007, it becomes a low-temperature, low-pressure gas-liquid mixture. In evaporator 2007, the low-temperature, low-pressure refrigerant absorbs heat from the surrounding air and evaporates, lowering the air temperature. Fan 2008 delivers the cooled air from evaporator 2007 through the outlet, achieving a cooling effect. Pressure controller 211 monitors the system pressure in real time to ensure stable operation within a suitable pressure range. A regulating valve is installed at the cold air outlet 2010 to adjust the opening size and control the range and intensity of the cold air delivery.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A centralized cooling distributed cooling system, deployed in a mine (800), the mine (800) comprising a main roadway (802), a mine entrance (801) connected to one end of the main roadway (802), and multiple mining areas (803) connected to the main roadway (802), characterized in that, It includes multiple refrigeration units (200) installed at the mine entrance (801), a cold air pipe (400) with one end connected to the refrigeration unit (200) and the other end extending into the main roadway (802) and mining area (803), a multi-machine joint control system (300) for controlling the independent operation and regulation of multiple refrigeration units (200), valves (500) connected to the cold air pipe (400) and located in each mining area (803), and a monitoring station (600) installed in each mining area (803) for monitoring environmental data and regulating the operation of the valves (500).

2. The centralized cooling distributed cooling system according to claim 1, characterized in that, The main tunnel (802) is also equipped with an axial flow fan (700) for pressurizing the cold air duct (400).

3. The centralized cooling distributed cooling system according to claim 1, characterized in that, The cold air duct (400) includes a first duct (401), a second duct (402), and a third duct (403). The number of first ducts (401) is equal to the number of refrigeration units (200) and they are connected in a one-to-one correspondence. Multiple first ducts (401) are connected to one end of the second duct (402), and the other end of the second duct (402) extends into the main roadway (802). The third duct (403) is evenly distributed in each mining area (803), and the third duct (403) is connected to the second duct (402). The valve (500) is located on the third duct (403).

4. The centralized cooling distributed cooling system according to claim 3, characterized in that, Multiple first pipes (401) are connected to second pipes (402) via multi-way valves (404).

5. The centralized refrigeration distributed cooling system according to claim 1, characterized in that, The end of the refrigeration unit (200) away from the cold air duct (400) is connected to a heat exhaust pipe (100), which extends from the mine entrance (801).

6. The centralized refrigeration distributed cooling system according to claim 1, characterized in that, The refrigeration unit (200) includes a frame (1000) and a cooling assembly (2000) mounted on the frame (1000). One end of the cooling assembly (2000) is provided with a hot air outlet (2001), and the other end of the cooling assembly (2000) is provided with a cold air outlet (2010). The cold air outlet (2010) is connected to the cold air duct (400).

7. The centralized cooling distributed cooling system according to claim 6, characterized in that, The cooling assembly (2000) includes a frame (2006) mounted on a vehicle frame (1000), a refrigeration electronic control system (2009) mounted on the frame (2006), and a cooling fan (2002), a condenser (2003), a filter (2004), a compressor (2005), an evaporator (2007), and a blower (2008) disposed within the frame (2006) and electrically connected to the refrigeration electronic control system (2009). A hot air outlet (2001) is provided at one end of the frame (2006), and a cold air outlet (2010) is provided at the other end of the frame (2006). A hot air fan (2002) is positioned near the hot air outlet (2001), and a blower (2008) is positioned near the cold air outlet (2010). The condenser (2003) is positioned adjacent to the cooling fan (2002), and the evaporator (2007) is positioned adjacent to the blower (2008). The evaporator (2007) is connected to the filter (2004) and the compressor (2005) via a first pipe (213). The compressor (2005) is connected to the condenser (2003) via a second pipe (214), and the condenser (2003) is connected to the evaporator (2007) via a third pipe (215).

8. The centralized refrigeration distributed cooling system according to claim 7, characterized in that, An expansion valve (212) is provided on the third pipeline (215); a pressure controller (211) is connected between the second pipeline (214) and the first pipeline (213).

9. The centralized cooling distributed cooling system according to claim 7, characterized in that, The vehicle frame (1000) includes a trailer frame (1004), a trailer jack (1003) located at one end of the trailer frame (1004), a tire assembly (1002) located at the other end of the trailer frame (1004), and movable outriggers (1001) located around the trailer frame (1004). The cooling assembly (2000) is located on the trailer frame (1004).

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