Novel fused salt energy storage device

Abstract

The utility model discloses a novel fused salt energy storage device which comprises an electric cabinet and a fused salt tank, fused salt is arranged in the fused salt tank, an electric heating device, a circulating water pipe and a water tank are arranged on the fused salt tank, the electric cabinet is connected with the electric heating device on the fused salt tank through an electric cabinet cable, the circulating water pipe is provided with a circulating water pipe connector and a circulating water pump, and the water tank is connected with the circulating water pipe connector. One end of the circulating water pipe is connected with the upper end of the water tank, the other end of the circulating water pipe is connected with the lower end of the water tank, the number of the circulating water pipe connectors is two, and the circulating water pipe is connected with the molten salt tank through the two circulating water pipe connectors; the upper end of the molten salt tank and the upper end of the water tank are respectively provided with a sensor assembly. In valley electricity, the fused salt in the fused salt tank is heated through the electric heating device, and heat energy is stored. According to the device, the electric heating device is used for heating the fused salt to convert valley electricity into heat energy and store the heat energy, the heat energy is released through heat exchange and utilization during peak electricity, and the effects of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The utility model relates to the field of peak load shifting, valley filling and energy storage of electricity, and more specifically, to a novel molten salt energy storage device. Background Technique

[0002] Since power plants generate electricity continuously all day long, if the generated electricity cannot be used up, the energy used for power generation will be wasted. The power generation capacity of a power plant is usually fixed, but the peak electricity consumption is usually during the day, and the valley is at night, which will cause a shortage of electricity during the day and surplus at night. If the surplus electricity at night cannot be used up, the generated electricity will be wasted. To solve this problem, the power system will shift a part of the peak load to the night valley period, so as to utilize the surplus electricity at night and achieve the purpose of saving energy.

[0003] Therefore, in view of the above problems, our company proposes a novel molten salt energy storage device. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a novel molten salt energy storage device, which uses an electric heating device to heat molten salt to convert valley electricity into heat energy and store it, and utilizes heat exchange during peak electricity, and releases heat energy when there is a heat demand, so as to achieve the effect of energy conservation and emission reduction.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a novel molten salt energy storage device, including an electric cabinet and a molten salt tank, the molten salt tank is provided with molten salt, the molten salt tank is provided with an electric heating device, a circulating water pipe and a water tank, the electric cabinet is connected to the electric heating device on the molten salt tank through an electric cabinet cable, the circulating water pipe is provided with a circulating water pipe interface and a circulating water pump, one end of the circulating water pipe is connected to the upper end of the water tank, the other end of the circulating water pipe is connected to the lower end of the water tank, there are two circulating water pipe interfaces, and the circulating water pipe is connected to the molten salt tank through the two circulating water pipe interfaces;

[0006] The upper end of the molten salt tank and the upper end of the water tank are respectively provided with a sensor assembly.

[0007] Further, a molten salt internal circulation pump is provided at the lower end of one side of the molten salt tank, the molten salt internal circulation pump is connected to a molten salt internal circulation pipe, and the molten salt circulates back and forth in the molten salt tank through the molten salt internal circulation pipe and the molten salt internal circulation pump.

[0008] Further, the sensor assembly includes a liquid level sensor, a pressure sensor and a temperature sensor.

[0009] Further, an electric control valve is provided on the molten salt internal circulation pipe.

[0010] Further, a water replenishing port is provided at the top of the water tank, an overflow port is provided at the upper end of one side of the water tank, and a sewage discharge valve is also connected and provided at the lower end of one side of the water tank.

[0011] Further, the molten salt tank is connected to a vacuum pumping device.

[0012] Further, a maintenance port is provided at the lower end of the molten salt tank.

[0013] Further, a power distribution cabinet is provided on one side of the molten salt tank, and a liquid level sensor, an electric control valve, a pressure sensor, a temperature sensor, and a vacuum pumping device are all electrically connected to the power distribution cabinet.

[0014] Compared with the prior art, the advantages of the present utility model are as follows:

[0015] 1. This device uses an electric heating device to heat molten salt to convert valley electricity into heat energy and store it, and uses heat exchange during peak electricity hours, and releases heat energy when there is a heat demand, achieving the effect of energy conservation and emission reduction. During valley electricity hours, the molten salt in the molten salt tank is heated by the electric heating device, and the heat energy is stored. During peak electricity hours, the molten salt tank is connected to external circulating water through a circulating water pipe interface, and the water source sent by the circulating water pump through the circulating water pipe is heated to a set temperature and sent to the water tank for production and living use.

[0016] 2. The molten salt tank is connected to a vacuum pumping device to ensure the pressure in the tank, slow down the corrosion of the device, and improve the safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the molten salt energy storage device of the present utility model.

[0018] Explanation of the reference numerals in the figure:

[0019] 1. Electric cabinet cable; 2. Liquid level sensor; 3. Molten salt internal circulation pipe; 4. Electric control valve; 5. Electric heating device; 6. Molten salt tank; 7. Maintenance port; 8. Circulating water pipe interface; 9. Circulating water pipe; 10. Pressure sensor; 11. Temperature sensor; 12. Molten salt internal circulation pump; 13. Circulating water pump; 14. Water tank; 15. Overflow port; 16. Sewage discharge valve; 17. Vacuum pumping device; 18. Power distribution cabinet; 19. Water replenishing port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "sheathed / connected", "connected", etc. shall be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Embodiment

[0023] Please refer to Figure 1 , a new type of molten salt energy storage device, including an electric cabinet and a molten salt tank 6. The molten salt tank 6 is provided with molten salt. The molten salt tank 6 is provided with an electric heating device 5, a circulating water pipe 9, and a water tank 14. The electric cabinet is connected to the electric heating device 5 on the molten salt tank 6 through an electric cabinet cable 1. The circulating water pipe 9 is provided with a circulating water pipe interface 8 and a circulating water pump 13. One end of the circulating water pipe 9 is connected to the upper end of the water tank 14, and the other end of the circulating water pipe 9 is connected to the lower end of the water tank 14. There are two circulating water pipe interfaces 8, and the circulating water pipe 9 is connected to the molten salt tank 6 through the two circulating water pipe interfaces 8; sensor components are respectively provided at the upper end of the molten salt tank 6 and the upper end of the water tank 14.

[0024] By connecting the electric cabinet to the electric heating device 5 on the molten salt tank 6, during off-peak electricity hours, the molten salt in the molten salt tank 6 is heated by the electric heating device 5, and the heat energy is stored. During peak electricity hours, the molten salt tank 6 is connected to external circulating water through the circulating water pipe interface, and the water source sent by the circulating water pump 13 through the circulating water pipe 9 is heated to a set temperature and sent to the water tank 14 for production and living use. This device uses the electric heating device 5 to heat the molten salt to convert off-peak electricity into heat energy and store it, and releases the heat energy when there is a heat demand during peak electricity hours through heat exchange, achieving the effect of energy conservation and emission reduction.

[0025] One lower end of the molten salt tank 6 is provided with a molten salt internal circulation pump 12. The molten salt internal circulation pump 12 is connected to a molten salt internal circulation pipe 3. The molten salt circulates reciprocally in the molten salt tank 6 through the molten salt internal circulation pipe 3 and the molten salt internal circulation pump 12, so that the molten salt is heated evenly and the heat energy is stored better.

[0026] The sensor assembly includes a liquid level sensor 2, a pressure sensor 10, and a temperature sensor 11. By setting the liquid level sensor 2, the pressure sensor 10, and the temperature sensor 11, the liquid level, pressure, and temperature of the molten salt tank 6 and the water tank 14 are monitored.

[0027] An electric control valve 4 is provided on the molten salt internal circulation pipe 3. The electric control valve 4 is used to adjust the temperature in the molten salt tank 6.

[0028] One top end of the water tank 14 is provided with a water replenishing port 19. One upper end of one side of the water tank 14 is provided with an overflow port 15. One lower end of one side of the water tank 14 is also communicated with a sewage discharge valve 16. When the water volume in the water tank 14 is insufficient, the water volume is increased through the water replenishing port 19. When the water volume in the water tank 14 is excessive, it is discharged through the overflow port 15. When the water tank 14 needs to be cleaned or the water needs to be replaced, the sewage is discharged through the sewage discharge valve 16.

[0029] The molten salt tank 6 is connected to a vacuum pumping device 17. By connecting the molten salt tank 6 to the vacuum pumping device 17, the pressure in the tank is guaranteed, the corrosion of the device is slowed down, and the safety of the system is improved.

[0030] One lower end of the molten salt tank 6 is provided with a maintenance port 7. By providing the maintenance port 7, it is convenient to repair the molten salt tank 6.

[0031] One side of the molten salt tank 6 is provided with a power distribution cabinet 18. The liquid level sensor 2, the electric control valve 4, the pressure sensor 10, the temperature sensor 11, and the vacuum pumping device 17 are all electrically connected to the power distribution cabinet 18. The device collects the liquid level, pressure, and temperature data of the molten salt tank and the water tank by the liquid level sensor 2, the pressure sensor 10, and the temperature sensor 11, and outputs control signals for control after being processed by the power distribution cabinet 18.

[0032] Working principle:

[0033] The molten salt energy storage device of the present utility model is connected to the electric heating device 5 on the molten salt tank 6 through an electric cabinet. During off-peak electricity hours, the molten salt in the molten salt tank 6 is heated by the electric heating device 5 to store thermal energy. During peak electricity hours, it is connected to external circulating water through the circulating water interface 8, and the water source sent by the circulating water pump 13 is heated to a set temperature and sent to the water tank 14 for production and domestic use. The molten salt circulates reciprocally in the molten salt tank 6 through the molten salt internal circulation pipe 3 and the molten salt internal circulation pump 12, making the heating of the molten salt uniform and better storing thermal energy. The liquid level sensor 2, pressure sensor 10, and temperature sensor 11 are provided to monitor the liquid level, pressure, and temperature of the molten salt tank 6 and the water tank 14. An electric control valve 4 is provided on the molten salt internal circulation pipe 3, and the electric control valve is used to adjust the temperature in the molten salt tank 6. A water replenishing port 19 is provided at the top of the water tank 14, an overflow port 15 is provided at the upper end of one side of the water tank 14, and a sewage discharge valve 16 is also connected and provided at the lower end of one side of the water tank 14. When the water volume in the water tank 14 is insufficient, the water volume is increased through the water replenishing port 19. When the water volume in the water tank 14 is excessive, it is discharged through the overflow port 15. When the water tank 14 needs to be cleaned or the water needs to be replaced, the sewage is discharged through the sewage discharge valve 16. The molten salt tank 6 is connected to a vacuum pumping device 17 to ensure the pressure in the tank, slow down the corrosion of the device, and improve the safety of the system. An inspection port 7 is provided at the lower end of the molten salt tank 6, and the inspection port 7 is provided to facilitate the maintenance of the molten salt tank 6. The device collects the liquid level, pressure, and temperature data of the molten salt tank 6 and the water tank 14 by the liquid level sensor 2, pressure sensor 10, and temperature sensor 11, and after being processed by the power distribution cabinet 18, control signals are output for control.

[0034] This device uses the electric heating device 5 to heat the molten salt to convert off-peak electricity into thermal energy and store it, and releases the thermal energy through heat exchange during peak electricity hours when there is a heat demand, achieving the effect of energy conservation and emission reduction.

[0035] The above is only the preferred specific implementation manner of the present utility model; however, the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A novel molten salt energy storage device, comprising an electric cabinet and a molten salt tank (6), characterized in that: The molten salt tank (6) is provided with molten salt. The molten salt tank (6) is provided with an electric heating device (5), a circulating water pipe (9), and a water tank (14). The electric cabinet is connected to the electric heating device (5) on the molten salt tank (6) through an electric cabinet cable (1). The circulating water pipe (9) is provided with a circulating water pipe interface (8) and a circulating water pump (13). One end of the circulating water pipe (9) is connected to the upper end of the water tank (14), and the other end of the circulating water pipe (9) is connected to the lower end of the water tank (14). Two circulating water pipe interfaces (8) are provided, and the circulating water pipe (9) is connected to the molten salt tank (6) through the two circulating water pipe interfaces (8). Sensor components are provided at the upper end of the molten salt tank (6) and the upper end of the water tank (14), respectively.

2. A novel molten salt energy storage device according to claim 1, characterized in that: A molten salt internal circulation pump (12) is provided at a lower end of one side of the molten salt tank (6), and the molten salt internal circulation pump (12) is connected to the molten salt internal circulation pipe (3), and the molten salt circulates back and forth in the molten salt tank (6) through the molten salt internal circulation pipe (3) and the molten salt internal circulation pump (12).

3. A novel molten salt energy storage device according to claim 1, characterized in that: The sensor assembly comprises a liquid level sensor (2), a pressure sensor (10), and a temperature sensor (11).

4. A novel molten salt energy storage device according to claim 2, characterized in that: The molten salt internal circulation pipe (3) is provided with an electric regulating valve (4).

5. A novel molten salt energy storage device according to claim 1, characterized in that: The top of the water tank (14) is provided with a water replenishment port (19), an upper end of one side of the water tank (14) is provided with an overflow port (15), and a lower end of one side of the water tank (14) is also connected to a sewage valve (16).

6. A novel molten salt energy storage device according to claim 1, characterized in that: The molten salt tank (6) is connected to a vacuum pump (17).

7. A novel molten salt energy storage device according to claim 1, characterized in that: The lower end of the molten salt tank (6) is provided with an inspection port (7).

8. A novel molten salt energy storage device according to claim 1, characterized in that: A power distribution cabinet (18) is provided on one side of the molten salt tank (6), and the liquid level sensor (2), the electric regulating valve (4), the pressure sensor (10), the temperature sensor (11), and the vacuum pumping device (17) are all electrically connected to the power distribution cabinet (18).

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