Cooling system of electrical protection device

Abstract

The utility model discloses a cooling system of an electrical protection device. A deionization system is connected with a buffer tank through a first filter tower, the buffer tank is connected with a degassing tank through a driving system, the degassing tank is connected with the electrical protection device through a speed regulating motor, and the electrical protection device is connected with the deionization system through a cooling device. According to the utility model, rapid cooling of the interior of the electrical protection device is realized, the cooling efficiency is improved, the arrangement of the storage battery can still ensure the cooling effect within a period of time after power failure, and the safety risk is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the cooling technical field, specifically relates to a cooling system of electrical protection device. BACKGROUND

[0002] Electrical protection device is a device for protecting various electrical equipment from being burned by high or low voltage. When the power supply has problems such as surge, unstable voltage, excessively high voltage, excessively low voltage, lightning strike, tripping, suspected stolen wire, etc., the electrical equipment is protected from being burned. The PCS device can control the charging and discharging process of the battery, convert AC and DC, and directly power the AC load in the absence of a power grid. It can also control the charger or discharger according to the sign and size of the power instruction to adjust the active and reactive power of the power grid, thereby achieving protective charging and discharging of the battery and ensuring the safe operation of the battery. It is an important electrical protection device.

[0003] However, the PCS device is a high-voltage equipment with dangerous high voltage inside, and some components may overheat due to long-term operation, which can cause burns when touched directly. To reduce the risk of operation and prolong the service life of the device, cooling is needed during the operation of the PCS device. Since the PCS device is very important, it is usually placed in a room with strict access restrictions, and an air conditioning system is installed in the room for cooling. However, the air conditioning system is located outside the PCS device, and can only cool the device through the external environment, which is inefficient and still poses a safety risk of overheating inside the device. Moreover, if the air conditioning system fails, maintenance personnel need to enter the room to manually open and repair it, which is inefficient and poses a certain safety risk.

[0004] Chinese patent CN117039244B discloses a pump-type energy-saving cooling system, energy storage cabinet and PCS cooling control method, which includes a battery pack cooling circuit, a PCS cooling circuit, a liquid cooling unit, a first valve body and a pump. The battery pack cooling circuit contains a first cooling fluid, and the PCS cooling circuit contains a second cooling fluid. The liquid cooling unit includes an outlet and an inlet, and the outlet is connected to the battery pack cooling circuit, while the inlet is connected to the battery pack cooling circuit and / or the PCS cooling circuit. The first valve body is used to deliver the first cooling fluid after cooling the battery pack back to the liquid cooling unit or to the PCS cooling circuit. The pump is arranged on the PCS cooling circuit to drive the flow of the second cooling fluid in the PCS cooling circuit.

[0005] Chinese patent CN117154283B discloses a heat exchange type anti-condensation cooling system and control method, and an energy storage cabinet, which comprises a battery pack cooling circuit, a PCS cooling circuit and a heat exchange assembly. The battery pack cooling circuit has a first cooling fluid. The PCS cooling circuit has a second cooling fluid. The heat exchange assembly is used to enable heat exchange between the first cooling fluid and the second cooling fluid. It can avoid condensation phenomenon while ensuring PCS cooling effect, realizing double effect.

[0006] However, the cooling system suitable for the PCS device can only realize the cooling effect under the premise of normal power supply, and cannot monitor the cooling effect, nor can it adjust the flow speed of the fluid for cooling in the cooling system according to the cooling effect. SUMMARY

[0007] In view of the above technical problems, the utility model provides a cooling system of electrical protection device, realizes the rapid cooling of the inside of electrical protection device, improves the cooling efficiency, and the setting of the storage battery can still ensure the cooling effect for a period of time after power failure, further reducing the safety risk.

[0008] In order to achieve the above purpose, the utility model provides a cooling system of electrical protection device, the deionization system is connected with the buffer tank through the first filter tower, the buffer tank is connected with the degassing tank through the driving system, the degassing tank is connected with the electrical protection device through the speed regulating motor, and the electrical protection device is connected with the deionization system through the cooling device.

[0009] Preferably, the deionization system is composed of a first deionization tank and a second deionization tank.

[0010] Preferably, the driving system is composed of a first driving pump and a second driving pump.

[0011] Preferably, the deionization system is connected with the water supplement tank through the second filter tower.

[0012] Preferably, the electrical protection device is connected with the storage battery, and the storage battery is connected with the driving system, the cooling device and the speed regulating motor respectively.

[0013] Further preferably, the storage battery is connected with the first driving pump and the second driving pump respectively.

[0014] Preferably, the speed regulating motor is connected with the electrical protection device through the liquid inlet pipeline, and the liquid inlet pipeline is connected with the liquid outlet pipeline through the branch pipe.

[0015] Further preferably, the electrical protection device is provided with an exhaust fan and a heat dissipation assembly, and the branch pipe is distributed between the exhaust fan and the heat dissipation assembly.

[0016] Further preferably, the electrical protection device is provided with an air inlet at the top and an air outlet at the bottom.

[0017] Further preferably, the liquid outlet pipe is provided with a temperature detector.

[0018] The present application has the following advantages:

[0019] 1. The circulating cooling medium is used to exchange heat after being pumped into the electrical protection device after ion removal, filtration and degassing, so as to prevent internal over-temperature and reduce safety risks, realize rapid cooling of the electrical protection device and improve cooling efficiency.

[0020] 2. The battery is used to provide backup power for the driving pump, cooling device and speed regulating motor, so that the driving pump, cooling device and speed regulating motor can continue to be powered when the electrical protection device trips or is powered off, so that the cooling medium can still flow for a period of time after power failure, continue to exchange heat in the electrical protection device and realize cooling, avoid accumulation of residual heat in the electrical protection device for a period of time after power failure, and prevent over-temperature, thereby reducing safety risks.

[0021] 3. The temperature detector is used to detect the temperature of the cooling medium in the liquid outlet pipe in real time, and the temperature is fed back to the speed regulating motor, so that the speed regulating motor can adjust the flow rate of the cooling medium in time, so as to reduce energy consumption while ensuring cooling effect. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 It is a schematic diagram of the whole connection of the present application.

[0023] Fig. 2 It is an internal distribution diagram of the electrical protection device.

[0024] In the figure, 1 is an electrical protection device, 2 is a cooling device, 3 is a first ion removal tank, 4 is a second ion removal tank, 5 is a battery, 6 is a first filter tower, 7 is a buffer tank, 8 is a liquid inlet pipe, 9 is a branch pipe, 10 is an exhaust fan, 11 is a liquid outlet pipe, 12 is an air outlet, 13 is an air inlet, 14 is a heat dissipation assembly, 15 is a temperature detector, 16 is a first driving pump, 17 is a second driving pump, 18 is a speed regulating motor, 19 is a degassing tank, 20 is a water supplement tank, and 21 is a second filter tower. DETAILED DESCRIPTION

[0025] The technical scheme of the utility model will be further explained and described in combination with the drawings and specific embodiments. It should be noted that the following embodiments are only preferred embodiments of the utility model and should not be understood as limiting the utility model. The protection scope of the utility model should be subject to the content recited in the claims. The modifications and replacements of the technical scheme of the utility model made by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Embodiment 1

[0027] As Figs. 1-2 shown, a cooling system of an electrical protection device, a deionization system is connected with a buffer tank 7 through a first filter tower 6, the buffer tank 7 is connected with a degassing tank 19 through a driving system, the degassing tank 19 is connected with the electrical protection device 1 through a speed regulating motor 18, the cooling medium stored in the deionization system is filtered through the first filter tower 6 in turn, the material prone to scaling and blocking is removed, then the cooling medium is buffered in the buffer tank 7, then the driving system provides power, the cooling medium is pumped into the degassing tank 19 to be degassed, finally the cooling medium is pumped into the electrical protection device 1 through the speed regulating motor 18 to adjust the flow rate, so that the cooling of the inside of the electrical protection device 1 is realized; the electrical protection device 1 is connected with the deionization system through a cooling device 2, the cooling medium after completing heat exchange in the electrical protection device 1 is transported to the cooling device 2 to be preliminarily cooled, then the cooling medium is transported back to the deionization system to be finally cooled and deionized.

[0028] Preferably, the deionization system is composed of a first deionization tank 3 and a second deionization tank 4 in parallel, so that the processing efficiency of the cooling medium is increased, thereby improving the cooling efficiency.

[0029] Preferably, the driving system is composed of a first driving pump 16 and a second driving pump 17 in parallel, so that sufficient driving force is provided for the cooling medium, the cooling medium can be transported to the electrical protection device 1 at a certain flow rate, heat exchange is carried out, the heat in the electrical protection device 1 is taken away, and the cooling of the electrical protection device 1 is realized.

[0030] Preferably, the deionization system is connected with a water supplement tank 20 through a second filter tower 21, the water supplement tank 20 is used to supplement the cooling medium filtered and processed through the second filter tower 21 to the deionization system in time, and the cooling effect is affected when the cooling medium in the deionization system is insufficient.

[0031] Preferably, the electrical protection device 1 is connected with the battery 5 to charge the battery 5, and the battery 5 is connected with the driving system, the cooling device 2 and the speed regulating motor 18 to provide power for the driving system, the cooling device 2 and the speed regulating motor 18. When the electrical protection device 1 is powered off due to various reasons, the battery 5 can still provide power for the driving system, the cooling device 2 and the speed regulating motor 18 for a period of time, so that the cooling medium in the electrical protection device 1 can still flow for a certain period of time to exchange heat, thereby avoiding over-temperature of the electrical protection device 1 after power off and further reducing the safety risk of the electrical protection device 1.

[0032] Further preferably, the battery 5 is connected with the first driving pump 16 and the second driving pump 17 respectively to provide power for the first driving pump 16 and the second driving pump 17 respectively.

[0033] Preferably, the speed regulating motor 18 is connected with the electrical protection device 1 through the liquid inlet pipeline 8, the liquid inlet pipeline 8 is connected with the liquid outlet pipeline 11 through the branch pipeline 9, the cooling medium enters the electrical protection device 1 through the liquid inlet pipeline 8 after the flow rate thereof is adjusted by the speed regulating motor 8, and then enters the branch pipeline 9 distributed in the position where more heat is generated in the electrical protection device 1 to exchange heat. After the heat exchange is completed, the cooling medium is discharged through the liquid outlet pipeline 11 and enters the cooling device 2 to be preliminarily cooled.

[0034] Further preferably, the electrical protection device 1 is provided with the exhaust fan 10 and the heat dissipation assembly 14, and the branch pipeline 9 is distributed between the exhaust fan 10 and the heat dissipation assembly 14 to exchange heat generated in the exhaust fan 10 and the heat dissipation assembly 14 to achieve cooling.

[0035] Still further preferably, the electrical protection device 1 is provided with the air inlet 13 at the top and the air outlet 12 at the bottom to use external air to self-cool the electrical protection device 1.

[0036] Further preferably, the temperature detector 15 is arranged on the liquid outlet pipeline 11, and the temperature detector 15 is interlocked with the speed regulating motor 18 to control the flow rate of the cooling medium while detecting the temperature of the cooling medium flowing out of the liquid outlet pipeline 11 in real time. When the temperature is too high, the flow rate of the cooling medium is increased by the speed regulating motor to accelerate the heat exchange speed in the electrical protection device 1, quickly take away heat and avoid over-temperature. When the temperature is moderate or at a lower level, the flow rate of the cooling medium is maintained at a lower level by the speed regulating motor to ensure the cooling effect while reducing energy consumption.

Claims

1. A cooling system for an electrical protection device, characterized in that: The deionization system is connected with the buffer tank (7) through the first filter tower (6), the buffer tank (7) is connected with the degassing tank (19) through the driving system, the degassing tank (19) is connected with the electrical protection device (1) through the speed regulating motor (18), and the electrical protection device (1) is connected with the deionization system through the cooling device (2).

2. The temperature reduction system of an electrical protection device according to claim 1, wherein: The deionization system is composed of the first deionization tank (3) and the second deionization tank (4).

3. The temperature reduction system of an electrical protection device according to claim 1, wherein: The driving system is composed of the first driving pump (16) and the second driving pump (17).

4. The temperature reduction system of an electrical protection device according to claim 1, wherein: The deionization system is connected with the water supplement tank (20) through the second filter tower (21).

5. The temperature reduction system of an electrical protection device according to claim 1, wherein: The electrical protection device (1) is connected with the storage battery (5), and the storage battery (5) is connected with the driving system, the cooling device (2) and the speed regulating motor (18) respectively.

6. A temperature reduction system for an electrical protection device according to claim 5, wherein: The storage battery (5) is connected with the first driving pump (16) and the second driving pump (17) respectively.

7. The temperature reduction system of an electrical protection device according to claim 1, wherein: The speed regulating motor (18) is connected with the electrical protection device (1) through the liquid inlet pipeline (8), and the liquid inlet pipeline (8) is connected with the liquid outlet pipeline (11) through the branch pipe (9).

8. The temperature reduction system of an electrical protection device according to claim 7, wherein: The electrical protection device (1) is provided with the exhaust fan (10) and the heat dissipation assembly (14), and the branch pipe (9) is distributed between the exhaust fan (10) and the heat dissipation assembly (14).

9. A temperature reduction system for an electrical protection device according to claim 8, wherein: The electrical protection device (1) is provided with the air inlet (13) at the top and the air outlet (12) at the bottom.

10. The temperature reduction system of an electrical protection device according to claim 7, wherein: The temperature detector (15) is arranged on the liquid outlet pipeline (11).

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