Cooling device for coal mine electromechanical equipment

Abstract

The utility model relates to the technical field of cooling, in particular to a coal mine electromechanical equipment cooling device which comprises a cooling box, a cooling box, a cooling pipeline, a liquid storage box, a first conveying pump, a cold source plate, a heat source plate and a second conveying pump. Cooling water in the liquid storage tank is pumped out through the first conveying pump, conveyed into the cooling pipeline through the heat source plate and then flows back into the liquid storage tank after passing through the cooling pipeline, so that the cooling water circularly flows between the cooling pipeline and the cooling pipeline; a second conveying pump pumps out the low-temperature cooling liquid in the cooling box and conveys the low-temperature cooling liquid into an inner cavity of the cold source plate, and the low-temperature cooling liquid in the cold source plate precools the high-temperature cooling water in the heat source plate; then the pre-cooled cooling water exchanges heat with the cooling liquid in the cooling box again through the cooling pipeline; the high-temperature cooling water is cooled twice, so that the cooling efficiency of the cooling water is effectively improved, and then the cooling efficiency of the motor is improved.

Description

Technical Field

[0001] This utility model relates to the field of cooling technology, specifically a cooling device for coal mine electromechanical equipment. Background Technology

[0002] During coal mining, groundwater seeps in and accumulates at lower levels of the mine. Water pumps are needed to drain this accumulated groundwater. However, the pump motor generates a lot of heat during long-term operation, which can cause it to overheat and become damaged. Therefore, it is necessary to cool down the pump motor.

[0003] A search revealed that patent application CN219592794U discloses a cooling device for coal mine electromechanical equipment. This device, equipped with connecting pipes, a fan, branch pipes, and air outlets, blows air into the motor's interior through the outlets, thereby cooling the motor's internal components and preventing high internal temperatures from affecting their lifespan. Patent application CN112867367B discloses a cooling device for coal mine electromechanical equipment that uses a suction component to draw low-temperature air into the housing, dissipating heat from the equipment. Connecting components facilitate installation and maintenance. Patent application CN212544430U discloses a cooling device for coal mine electromechanical equipment that uses a refrigeration unit to rapidly cool the equipment within a storage compartment, while an exhaust fan accelerates air circulation, keeping the storage compartment dry.

[0004] However, due to the relatively enclosed environment in coal mines, air circulation is slow, and the conventional air-cooling method used for water pump motors is not effective. After prolonged use, the motor temperature will still rise, which will damage the water pump and affect drainage efficiency.

[0005] Therefore, a cooling device for coal mine electromechanical equipment is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A cooling device for coal mine electromechanical equipment according to this utility model includes a cooling box and a cooling tank; the cooling box is used to house the motor of a water pump; a cooling pipe is fixedly connected to the top of the inner cavity of the cooling box; both ends of the cooling pipe penetrate the outer wall of the cooling box near the cooling tank; a cooling pipe is fixedly connected inside the cooling tank; both ends of the cooling pipe penetrate the outer walls of both sides of the cooling tank respectively; a storage tank and a first delivery pump are fixedly connected to the top surface of the cooling tank near the cooling pipe; the storage tank is filled with cooling water; the cooling tank is filled with coolant; the first delivery pump is used to pump the cooling water inside the storage tank out and deliver it to the cooling pipe, and then return it to the storage tank after passing through the cooling pipe.

[0008] Preferably, a cold source plate and a heat source plate are fixedly connected to the top of the cooling box on the side away from the cooling chamber; both the cold source plate and the heat source plate have internal cavities; a second delivery pump is fixedly connected to the side of the cooling box away from the cooling chamber; the second delivery pump is used to pump the coolant inside the cooling box out and deliver it to the internal cavity of the cold source plate, and then return it to the cooling box; the inlet pipe end of the heat source plate is connected to the outlet end of the first delivery pump; the outlet end of the heat source plate is connected to the inlet end of the cooling pipe.

[0009] Preferably, a thermoelectric generator is provided between the cold source plate and the heat source plate; a storage battery is fixedly connected to the top surface of the cooling box; and the thermoelectric generator is electrically connected to the storage battery.

[0010] Preferably, an air inlet pipe is fixedly connected to the top surface of the cooling box; a fan is fixedly connected to the bottom of the air inlet pipe; and a filter screen is fixedly connected to the inlet of the air inlet pipe.

[0011] Preferably, the air inlet duct is provided with multiple baffles that are staggered and fixed inside; the multiple baffles form a curved air duct inside the air inlet duct.

[0012] Preferably, the cooling box has multiple heat dissipation vents on both sides of its bottom; the heat dissipation vents are oriented from the inside out and are inclined downwards.

[0013] Preferably, the cooling box has hinged doors on both sides of its front; the two doors can be closed and locked; and a through hole is provided at the bottom of the back of the cooling box.

[0014] Preferably, the bottom surface of the cooling box and the cooling chamber is fixedly connected to a supporting base plate; the bottom surface of the supporting base plate is fixedly connected to a plurality of casters.

[0015] Preferably, multiple telescopic support rods are fixedly connected to both ends of the support base plate; a support plate is fixedly connected to the bottom end of each telescopic support rod; a screw is provided inside each telescopic support rod, and the height can be adjusted by the screw.

[0016] Preferably, the cooling pipe is horizontally arranged inside the cooling box, and the cooling pipe consists of a section of serpentine curved pipe and a section of straight pipe; the cooling pipe is horizontally arranged inside the cooling box; the cooling pipe is a serpentine curved pipe.

[0017] The advantages of this utility model are:

[0018] 1. The present invention relates to a cooling device for coal mine electromechanical equipment, comprising a cooling box, a cooling pipe, a storage tank, a first conveying pump, a cold source plate, a heat source plate, and a second conveying pump. The first conveying pump pumps cooling water from the storage tank, which is then conveyed through the heat source plate to the cooling pipe, and then back to the storage tank through the cooling pipe, thus circulating the cooling water between the cooling pipe and the cooling pipe. The second conveying pump pumps low-temperature coolant from the cooling box and delivers it to the inner cavity of the cold source plate. The low-temperature coolant in the cold source plate exchanges heat with the high-temperature cooling water in the heat source plate, pre-cooling the high-temperature cooling water. The pre-cooled cooling water then exchanges heat again with the coolant in the cooling box through the cooling pipe. By performing two cooling processes on the high-temperature cooling water, the cooling efficiency of the cooling water is effectively improved, thereby improving the cooling efficiency of the motor.

[0019] 2. The cooling device for coal mine electromechanical equipment described in this utility model is equipped with a thermoelectric generator. When the low-temperature coolant inside the cold source plate exchanges heat with the high-temperature cooling water inside the heat source plate, a temperature difference is generated on both sides of the thermoelectric generator. The thermoelectric generator uses the temperature difference to generate electrical energy, which is then sent to a battery for storage. The stored electrical energy from the thermoelectric generator provides a supplementary power source for the operation of the cooling device and can also provide emergency power for the cooling device in the event of a power outage. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0021] Figure 1 This is a perspective view of the cooling device in this utility model;

[0022] Figure 2 This is a diagram showing the internal structure of the cooling box and the cooling chamber in this utility model;

[0023] Figure 3 This is a three-dimensional view of the cooling water circulation pipeline in this utility model;

[0024] Figure 4 This is a perspective view of the coolant circulation pipeline in this utility model;

[0025] Figure 5 This is a cross-sectional view of the air inlet pipe in this utility model.

[0026] In the diagram: 1. Cooling box; 2. Cooling chamber; 3. Cooling pipe; 4. Cooling pipe; 5. Liquid storage tank; 6. No. 1 transfer pump; 7. Cold source plate; 8. Heat source plate; 9. No. 2 transfer pump; 10. Thermoelectric generator; 11. Air inlet pipe; 12. Fan; 13. Filter screen; 14. Baffle; 15. Heat dissipation vent; 16. Cabinet door; 17. Through hole; 18. Support base plate; 19. Casters; 20. Telescopic support rod; 21. Support plate. Detailed Implementation

[0027] 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 scope of protection of the present utility model.

[0028] like Figures 1 to 3 As shown, a cooling device for coal mine electromechanical equipment includes a cooling box 1 and a cooling box 2. The cooling box 1 houses the motor of a water pump. A cooling pipe 3 is fixedly connected to the top of the inner cavity of the cooling box 1. Both ends of the cooling pipe 3 penetrate the outer wall of the cooling box 1 near the cooling box 2. A cooling pipe 4 is fixedly connected inside the cooling box 2. Both ends of the cooling pipe 4 penetrate the outer walls of both sides of the cooling box 2. A liquid storage tank 5 and a first delivery pump 6 are fixedly connected to the top surface of the cooling box 2 near the cooling pipe 3. The liquid storage tank 5 is filled with cooling water. The cooling box 2 is filled with coolant. The first delivery pump 6 pumps the cooling water from the liquid storage tank 5 and delivers it to the cooling pipe 4, then back to the liquid storage tank 5 after passing through the cooling pipe 3.

[0029] During coal mining, groundwater seeps in and accumulates at lower levels of the mine. Water pumps are needed to drain this accumulated groundwater. However, the pump motors generate a lot of heat during long-term operation, which can cause them to overheat and become damaged. Therefore, continuous and effective cooling is required for the pump motors.

[0030] During operation, the water pump motor is placed inside the cooling tank 1, and the motor's output shaft passes through the back of the cooling tank 1 and connects to the water pump. The motor continuously generates heat when it is working, and the high temperature generated is dissipated into the cooling tank 1. At this time, the first delivery pump 6 pumps the cooling water from the storage tank 5 and delivers it to the cooling pipe 4. After passing through the cooling pipe 3, it flows back into the storage tank 5, so that the cooling water circulates between the cooling pipe 4 and the cooling pipe 3. When the cooling water enters the cooling pipe 3, the high temperature generated by the motor inside the cooling tank 1 exchanges heat with the cooling water inside the cooling pipe 3. The heated cooling water passes through the storage tank 5 and the first delivery pump 6 and is then delivered to the cooling pipe 4, so that the high temperature cooling water exchanges heat with the low temperature coolant inside the cooling tank 2, so that the high temperature cooling water returns to the low temperature cooling water. After that, the low temperature cooling water flows back into the storage tank 5 through the cooling pipe 3.

[0031] The circulating cooling water exchanges heat with the high-temperature air inside cooling box 1 and the low-temperature coolant inside cooling box 2, thereby effectively reducing the temperature inside cooling box 1 and providing a low-temperature environment for motor operation, thus ensuring the safety of motor operation.

[0032] like Figures 1 to 4 As shown, a cold source plate 7 and a heat source plate 8 are fixedly connected to the top of the cooling tank 2 on the side away from the cooling box 1; both the cold source plate 7 and the heat source plate 8 have internal cavities; a second delivery pump 9 is fixedly connected to the side of the cooling tank 2 away from the cooling box 1; the second delivery pump 9 is used to pump the coolant inside the cooling tank 2 out and deliver it to the internal cavity of the cold source plate 7, and then return it to the cooling tank 2; the liquid inlet end of the heat source plate 8 is connected to the liquid outlet end of the first delivery pump 6; the liquid outlet end of the heat source plate 8 is connected to the liquid inlet end of the cooling pipe 4.

[0033] During operation, when cooling water is pumped from the storage tank 5 to the cooling pipe 4 by the first transfer pump 6, the cooling water first needs to pass through the heat source plate 8 before entering the cooling pipe 4. While the cooling water is passing through the heat source plate 8, the second transfer pump 8 pumps out the low-temperature coolant inside the cooling tank 2 and delivers it to the inner cavity of the cold source plate 7. The low-temperature coolant inside the cold source plate 7 exchanges heat with the high-temperature cooling water inside the heat source plate 8, pre-cooling the high-temperature cooling water. After that, the pre-cooled cooling water passes through the cooling pipe 4 and exchanges heat again with the coolant inside the cooling tank 2. By cooling the high-temperature cooling water twice, the cooling efficiency of the cooling water is effectively improved, thereby improving the cooling efficiency of the motor.

[0034] like Figures 1 to 3As shown, a thermoelectric generator 10 is provided between the cold source plate 7 and the heat source plate 8; a storage battery is fixedly connected to the top surface of the cooling box 2; the thermoelectric generator 10 is electrically connected to the storage battery.

[0035] In this embodiment, the thermoelectric generator 10 is a semiconductor thermoelectric generator, which is an existing conventional and mature product. Specifically, a semiconductor thermoelectric generator with model number SP1848-27145 produced by Shenzhen Shengjiaye Electronics Co., Ltd. can be selected.

[0036] During operation, when the low-temperature coolant inside the cold source plate 7 exchanges heat with the high-temperature cooling water inside the heat source plate 8, a temperature difference is generated on both sides of the thermoelectric generator 10. The thermoelectric generator 10 uses the temperature difference to generate electrical energy, which is then sent to the battery for storage. The electrical energy generated by the thermoelectric generator 10 and stored provides a supplement to the operation of the cooling device, and can also provide emergency power to the cooling device in the event of a power outage.

[0037] like Figure 1 , Figure 2 and Figure 5 As shown, an air inlet pipe 11 is fixedly connected to the top surface of the cooling box 1; a fan 12 is fixedly connected to the bottom of the air inlet pipe 11; and a filter screen 13 is fixedly connected to the inlet of the air inlet pipe 11.

[0038] During operation, fan 5 draws outside air into the cooling box 1 through air inlet 6 and delivers air downwards from the top of the cooling box 1. The air then passes through cooling pipe 3 to form cold air, which is blown into the entire cooling box 1, thereby increasing the surface area of ​​the motor for cooling and effectively ensuring the low-temperature operating environment of the motor. Furthermore, when the air enters the cooling box 1, it is filtered by filter screen 13, which effectively improves the cleanliness of the air.

[0039] like Figure 5 As shown, multiple baffles 14 are interlaced and fixed inside the air inlet pipe 11; the multiple baffles 14 form a curved air duct inside the air inlet pipe 11;

[0040] During operation, the filter screen 13 intercepts and removes some particulate impurities in the air. Then, the air flows along the curved air duct composed of multiple baffles 14, which reduces the air velocity, causing the small particulate impurities in the air to be fully settled and intercepted. After multiple interceptions, the impurities are intercepted and fall into the bottom of the air inlet pipe 11, thereby ensuring the cleanliness of the air and avoiding the impact of particulate impurities on the operation of the motor.

[0041] like Figure 1 and Figure 2As shown, multiple heat dissipation vents 15 are provided on both sides of the bottom of the cooling box 1; the direction of the heat dissipation vents 15 is from the inside out and inclined downward; by setting the opening direction of the heat dissipation vents 16 to be inclined downward from the inside out, the condensate water formed by the hot air inside the cooling box 1 can be effectively discharged, and the motor can be prevented from getting damp.

[0042] like Figure 1 and Figure 2 As shown, cabinet doors 16 are hinged to both sides of the front of the cooling box 1; the two cabinet doors 16 can be closed and locked; a through hole 17 is provided at the bottom of the back of the cooling box 1; the cabinet doors 16 facilitate the placement and installation of the motor by the staff, and at the same time, facilitate the operation of the motor; the output shaft of the motor is led out of the cooling box 1 through the through hole 17 and connected to the water pump.

[0043] like Figure 1 and Figure 2 As shown, a support base plate 18 is fixedly connected to the bottom surface of the cooling box 1 and the cooling box 2; a plurality of casters 19 are fixedly connected to the bottom surface of the support base plate 18.

[0044] The supporting base plate 18 is used to fix the cooling box 1 and the cooling box 2, so that the cooling box 1 and the cooling box 2 can be moved as a whole, thereby avoiding the danger caused by the change of position of the cooling box 1 and the cooling box 2 when they are moved; the casters 19 are provided to facilitate the movement of the staff.

[0045] like Figure 1 and Figure 2 As shown, multiple telescopic support rods 20 are fixedly connected to both ends of the support base plate 18; a support plate 21 is fixedly connected to the bottom end of each telescopic support rod 20; a screw is provided inside each telescopic support rod 20, and the height can be adjusted by the screw.

[0046] During operation, once the cooling box 1 and the cooling box 2 are moved to the appropriate positions, the screw inside the telescopic support rod 20 controls the telescopic support rod 20 to push the support plate 21 to contact the ground, thus providing overall support and fixing for the cooling device. Furthermore, by adjusting the telescopic support rod 20 separately, the stability of the cooling device can be easily adjusted under complex ground conditions.

[0047] like Figure 2 and Figure 3 As shown, the cooling pipe 3 is horizontally arranged inside the cooling box 1, and the cooling pipe 3 consists of a section of serpentine curved pipe and a section of straight pipe; the cooling pipe 4 is horizontally arranged inside the cooling box 1; the cooling pipe 4 is a serpentine curved pipe.

[0048] By setting the cooling pipe 3 as a horizontal serpentine bend, it is possible to increase the full contact with the air generated by the fan 12 and improve the efficiency of cold air generation; by setting the cooling pipe 4 as a horizontal serpentine bend, it is possible to provide contact with the coolant and improve the cooling efficiency of the cooling water; thereby improving the cooling effect inside the cooling box 1.

[0049] Working principle: The motor of the water pump is placed inside the cooling box 1. The output shaft of the motor is led out through the through hole 17 and connected to the water pump in the cooling box 1. The high temperature generated by the motor when it is working is dissipated into the interior of the cooling box 1.

[0050] At this time, the first delivery pump 6 pumps the cooling water inside the storage tank 5, which is then delivered to the cooling pipe 4 after passing through the heat source plate 8, and then flows back to the storage tank 5 after passing through the cooling pipe 3, so that the cooling water circulates between the cooling pipe 4 and the cooling pipe 3; at the same time, the second delivery pump 8 pumps the low-temperature coolant inside the cooling tank 2 and delivers it to the inner cavity of the cold source plate 7, and finally flows back to the cooling tank 2.

[0051] When cooling water enters the cooling pipe 3, the high temperature generated by the motor inside the cooling box 1 exchanges heat with the cooling water inside the cooling pipe 3. The heated cooling water then passes through the storage tank 5 and the first transfer pump 6 before entering the heat source plate 8. The low-temperature coolant inside the cold source plate 7 exchanges heat with the high-temperature cooling water inside the heat source plate 8, pre-cooling the high-temperature cooling water. After pre-cooling, the cooling water then passes through the cooling pipe 4 and exchanges heat again with the coolant inside the cooling box 2. By cooling the high-temperature cooling water twice, the efficiency of cooling water cooling is effectively improved.

[0052] At the same time, the fan 5 draws outside air into the cooling box 1 through the air inlet 6 and delivers air downwards from the top of the cooling box 1. The air is then circulated through the cooling pipe 3 to form cold air, which is then blown into the entire cooling box 1, thereby increasing the surface area of ​​the motor for cooling and effectively ensuring the low-temperature operating environment of the motor.

[0053] Furthermore, when the low-temperature coolant inside the cold source plate 7 exchanges heat with the high-temperature cooling water inside the heat source plate 8, a temperature difference will be generated on both sides of the thermoelectric generator 10. The thermoelectric generator 10 uses the temperature difference to generate electrical energy and sends it to the battery for storage. The electrical energy generated by the thermoelectric generator 10 and stored provides a supplement to the operation of the cooling device and can provide emergency power to the cooling device in the event of a power outage.

[0054] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A cooling device for coal mine electromechanical equipment, characterized in that: The system includes a cooling chamber and a cooling tank. The cooling chamber houses the motor of a water pump. A cooling pipe is fixedly connected to the top of the inner cavity of the cooling chamber. Both ends of the cooling pipe penetrate the outer wall of the cooling chamber near the cooling tank. A cooling pipe is fixedly connected inside the cooling tank. Both ends of the cooling pipe penetrate the outer walls of both sides of the cooling tank. A storage tank and a first delivery pump are fixedly connected to the top surface of the cooling tank near the cooling pipe. The storage tank is filled with cooling water. The cooling tank is filled with coolant. The first delivery pump pumps the cooling water from the storage tank into the cooling pipe, and then back into the storage tank after passing through the cooling pipe.

2. The cooling device for coal mine electromechanical equipment according to claim 1, characterized in that: A cold source plate and a heat source plate are fixedly connected to the top of the cooling tank on the side away from the cooling chamber; both the cold source plate and the heat source plate have internal cavities; a second delivery pump is fixedly connected to the side of the cooling tank away from the cooling chamber; the second delivery pump is used to pump the coolant inside the cooling tank out and deliver it to the internal cavity of the cold source plate, and then return it to the cooling tank; the inlet pipe end of the heat source plate is connected to the outlet end of the first delivery pump; the outlet end of the heat source plate is connected to the inlet end of the cooling pipe.

3. The cooling device for coal mine electromechanical equipment according to claim 2, characterized in that: A thermoelectric generator is installed between the cold source plate and the heat source plate; a storage battery is fixedly connected to the top surface of the cooling box; the thermoelectric generator is electrically connected to the storage battery.

4. The cooling device for coal mine electromechanical equipment according to claim 1, characterized in that: An air inlet pipe is fixedly connected to the top surface of the cooling box; a fan is fixedly connected to the bottom of the air inlet pipe; and a filter screen is fixedly connected to the inlet of the air inlet pipe.

5. A cooling device for coal mine electromechanical equipment according to claim 4, characterized in that: The air inlet duct is internally fixed with multiple baffles in an alternating manner; the multiple baffles form a curved air duct inside the air inlet duct.

6. A cooling device for coal mine electromechanical equipment according to claim 4, characterized in that: The cooling box has multiple heat dissipation vents on both sides of its bottom; the heat dissipation vents are oriented from the inside out and are inclined downwards.

7. A cooling device for coal mine electromechanical equipment according to claim 1, characterized in that: The cooling box has hinged doors on both sides of its front; the two doors can be closed and locked; and a through hole is provided at the bottom of the back of the cooling box.

8. A cooling device for coal mine electromechanical equipment according to claim 1, characterized in that: The bottom surface of the cooling box and the cooling chamber is fixedly connected to a support base plate; the bottom surface of the support base plate is fixedly connected to multiple casters.

9. A cooling device for coal mine electromechanical equipment according to claim 8, characterized in that: Multiple telescopic support rods are fixed to both ends of the support base plate; a support plate is fixed to the bottom end of each telescopic support rod; a screw is installed inside each telescopic support rod, and the height can be adjusted by the screw.

10. A cooling device for coal mine electromechanical equipment according to claim 1, characterized in that: The cooling pipe is horizontally arranged inside the cooling box, and the cooling pipe consists of a section of serpentine curved pipe and a section of straight pipe; the cooling pipe is horizontally arranged inside the cooling box; the cooling pipe is a serpentine curved pipe.

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