Electric heating fused salt energy storage system for reactor

Abstract

The utility model provides an electric heating fused salt energy storage system for a reactor. The electric heating fused salt energy storage system comprises a low-temperature fused salt tank, a fused salt electric heater and a high-temperature fused salt tank which are communicated in sequence, the fused salt electric heater is used for heating low-temperature fused salt into high-temperature fused salt; the system further comprises a reactor, the fused salt input end of the reactor is communicated with the fused salt output end of the high-temperature fused salt tank, the fused salt output end of the reactor is communicated with the fused salt input end of the low-temperature fused salt tank through a first pipeline, and the fused salt output end of the reactor is further communicated with the fused salt input end of the reactor through a second pipeline. A first valve assembly is arranged on the first pipeline, and a second valve assembly is arranged on the second pipeline. According to the technical scheme, low-cost electric energy is used for replacing natural gas to heat the fused salt, natural gas resources are saved, meanwhile, electric clean energy such as low-price electricity / off-peak electricity / wind and light abandoned electricity which is not needed in a power grid is consumed, the resource utilization rate is increased, and carbon emission and cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of reactor energy supply, and in particular to an electric heating molten salt energy storage system for a reactor. Background Art

[0002] A reactor is a device that realizes a reaction process. It is widely used in chemical, oil refining, metallurgy and other fields to realize liquid single-phase reaction processes and liquid-liquid, gas-liquid, liquid-solid, gas-liquid-solid and other multiphase reaction processes.

[0003] The reactor needs certain temperature conditions for reaction. Different reaction mechanisms require different temperatures. For example, in the chemical industry, the temperature usually needs to be maintained at about 300-400°C. At present, the reactor of an enterprise usually uses natural gas to heat molten salt to provide heat for its reaction, but the combustion of natural gas will produce carbon emissions, which will have an impact on the environment. In addition, natural gas is expensive, and the use of natural gas for heating increases the operating costs of enterprises. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the utility model is to provide an electrically heated molten salt energy storage system for a reactor, which uses low-cost electricity instead of natural gas to heat the molten salt, thereby reducing carbon emissions and costs.

[0005] The utility model provides an electrically heated molten salt energy storage system for a reactor, comprising a low-temperature molten salt tank, a molten salt electric heater and a high-temperature molten salt tank connected in sequence; the molten salt electric heater is used to heat the low-temperature molten salt into high-temperature molten salt;

[0006] It also includes a reactor, wherein the molten salt input end of the reactor is connected to the molten salt output end of the high-temperature molten salt tank, the molten salt output end of the reactor is connected to the molten salt input end of the low-temperature molten salt tank through a first pipeline, and the molten salt output end of the reactor is also connected to the molten salt input end of the reactor through a second pipeline; a first valve assembly is arranged on the first pipeline, and a second valve assembly is arranged on the second pipeline.

[0007] Furthermore, the molten salt output end of the reactor is provided with a low-temperature molten salt output port, and the number of the low-temperature molten salt output ports is one or two.

[0008] Further, in the case that the number of the low-temperature molten salt output port of the reactor is one, the first pipeline partially overlaps with the second pipeline, the first pipeline includes a second low-temperature molten salt connecting pipe and a third low-temperature molten salt connecting pipe, and the second pipeline includes a second low-temperature molten salt connecting pipe and a fourth low-temperature molten salt connecting pipe;

[0009] The electrically heated molten salt energy storage system further includes a first connection structure and a second connection structure, wherein the first connection structure and the second connection structure are both internal hollow structures;

[0010] The first end of the first connecting structure is connected to the molten salt output end of the high-temperature molten salt tank, and the second end of the first connecting structure is connected to the molten salt input end of the reactor; the first end of the second connecting structure is connected to the molten salt output end of the reactor through the second low-temperature molten salt connecting pipe, and the second end of the second connecting structure is connected to the molten salt input end of the low-temperature molten salt tank through the third low-temperature molten salt connecting pipe; the third end of the first connecting structure is connected to the third end of the second connecting structure through the fourth low-temperature molten salt connecting pipe; wherein the first valve assembly is provided on the third low-temperature molten salt connecting pipe, and the second valve assembly is provided on the fourth low-temperature molten salt connecting pipe.

[0011] Furthermore, an agitator is provided inside the first connection structure, and delivery pumps are provided at the connection points between the second connection structure and the low-temperature molten salt tank and the first connection structure, respectively, for pumping molten salt and adjusting the delivery speed of the molten salt.

[0012] Further, when the number of the low-temperature molten salt output ports of the reactor is two, the first pipeline and the second pipeline are independent of each other, the first pipeline includes a third low-temperature molten salt connecting pipe, and the second pipeline includes a fourth low-temperature molten salt connecting pipe;

[0013] The electrically heated molten salt energy storage system further includes a first connection structure, which is an internal hollow structure;

[0014] The first end of the first connecting structure is connected to the molten salt output end of the high-temperature molten salt tank, and the second end of the first connecting structure is connected to the molten salt input end of the reactor; one of the low-temperature molten salt output ports is connected to the molten salt input end of the low-temperature molten salt tank through the third low-temperature molten salt connecting pipe, and the other low-temperature molten salt output port is connected to the third end of the first connecting structure through the fourth low-temperature molten salt connecting pipe; wherein the first valve assembly is provided on the third low-temperature molten salt connecting pipe, and the second valve assembly is provided on the fourth low-temperature molten salt connecting pipe.

[0015] Furthermore, an agitator is provided inside the first connection structure, and both of the low-temperature molten salt output ports are provided with delivery pumps for pumping the molten salt and adjusting the delivery speed of the molten salt.

[0016] Furthermore, the low-temperature molten salt tank pumps low-temperature molten salt to the molten salt input end of the molten salt electric heater through a low-temperature molten salt pump, and the high-temperature molten salt tank pumps high-temperature molten salt to the molten salt input end of the reactor through a high-temperature molten salt pump.

[0017] Furthermore, the electric energy used by the molten salt electric heater is valley electricity or abandoned electricity.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model provides an electrically heated molten salt energy storage system for a reactor, which utilizes low-cost electric energy to replace natural gas to heat the molten salt. The heat stored in the molten salt is used to provide heat for the reactor, thereby saving natural gas resources and absorbing the low-cost electricity / off-peak electricity / wind and solar power abandonment and other clean electric energy sources that are not needed in the power grid, thereby improving resource utilization and reducing carbon emissions and costs. At the same time, the temperature difference of the molten salt is utilized to mix high-temperature molten salt and low-temperature molten salt into medium-temperature molten salt, thereby meeting the heating temperature requirement of the reactor, reducing the volume of the molten salt to be heated, reducing the temperature limit of the molten salt heating, and facilitating the temperature control of the medium-temperature molten salt according to the requirements of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0021] Figure 1 A schematic diagram of the structure of an electrically heated molten salt energy storage system for a reactor provided in an embodiment of the utility model;

[0022] Figure 2 A schematic diagram of the structure of an energy storage stage provided by an embodiment of the utility model;

[0023] Figure 3 A schematic diagram of a structure in the energy release stage provided by an embodiment of the utility model;

[0024] Figure 4 A schematic diagram of the structure of another electrically heated molten salt energy storage system for a reactor provided in an embodiment of the utility model;

[0025] Figure 5 A schematic diagram of another structure of the energy release stage provided by an embodiment of the utility model.

[0026] In the figure:

[0027] 1. High temperature molten salt tank; 101. High temperature molten salt pump; 102. First high temperature molten salt connecting pipe; 103. Second high temperature molten salt connecting pipe;

[0028] 2. Low-temperature molten salt tank; 201. Low-temperature molten salt pump; 202. First low-temperature molten salt connecting pipe; 203. Second low-temperature molten salt connecting pipe; 204. Third low-temperature molten salt connecting pipe; 205. Fourth low-temperature molten salt connecting pipe; 206. First valve assembly, 207. Second valve assembly;

[0029] 3. Molten salt electric heater;

[0030] 4. A first connection structure;

[0031] 5. Medium temperature molten salt connecting pipe;

[0032] 6. Reactor;

[0033] 7. Second connection structure. DETAILED DESCRIPTION

[0034] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the utility model. These all belong to the protection scope of the utility model.

[0035] Embodiment 1:

[0036] See also Figure 1 , Figure 2 and Figure 3 , which shows an electrically heated molten salt energy storage system for a reactor provided in an embodiment of the present application, comprising a low-temperature molten salt tank 2, a molten salt electric heater 3 and a high-temperature molten salt tank 1 connected in sequence; the molten salt electric heater 3 is used to heat the low-temperature molten salt into high-temperature molten salt, and the molten salt electric heater 3 is electrically connected to the power system, and the power system provides low-cost electric energy for the molten salt electric heater 3;

[0037] It also includes a reactor 6, the molten salt input end of the reactor 6 is connected to the molten salt output end of the high-temperature molten salt tank 1, the molten salt output end of the reactor 6 is connected to the molten salt input end of the low-temperature molten salt tank 2 through a first pipeline, and the molten salt output end of the reactor 6 is also connected to the molten salt input end of the reactor 6 through a second pipeline, so that the reactor 6 is heated under the energy supply of the medium-temperature molten salt obtained by mixing the high-temperature molten salt and the low-temperature molten salt; a first valve assembly 206 is arranged on the first pipeline, and a second valve assembly 207 is arranged on the second pipeline.

[0038] In a specific embodiment, the molten salt output end of the reactor 6 is provided with a low-temperature molten salt output port, and the number of the low-temperature molten salt output port is one. At this time, the first pipeline partially overlaps with the second pipeline, the first pipeline includes a second low-temperature molten salt connecting pipe 203 and a third low-temperature molten salt connecting pipe 204, and the second pipeline includes a second low-temperature molten salt connecting pipe 203 and a fourth low-temperature molten salt connecting pipe 205; the electrically heated molten salt energy storage system also includes a first connecting structure 4, a second connecting structure 7, a high-temperature molten salt pump 101 and a low-temperature molten salt pump 201;

[0039] The molten salt output end of the low-temperature molten salt tank 2 is connected to the molten salt input end of the molten salt electric heater 3 through the first low-temperature molten salt connecting pipe 202, the molten salt output end of the molten salt electric heater 3 is connected to the high-temperature molten salt tank 1 through the second high-temperature molten salt connecting pipe 103, the molten salt output end of the high-temperature molten salt tank 1 is connected to the first end of the first connecting structure 4 through the first high-temperature molten salt connecting pipe 102, the second end of the first connecting structure 4 is connected to the molten salt input end of the reactor 6 through the medium-temperature molten salt connecting pipe 5, the low-temperature molten salt output port of the reactor 6 is connected to the first end of the second connecting structure 7 through the second low-temperature molten salt connecting pipe 203, and the second connecting structure The second end of the first connection structure 7 is connected to the molten salt input end of the low-temperature molten salt tank 2 through the third low-temperature molten salt connecting pipe 204, and the third end of the first connection structure 4 is connected to the third end of the second connection structure 7 through the fourth low-temperature molten salt connecting pipe 205; wherein, the low-temperature molten salt tank 2 pumps the low-temperature molten salt to the molten salt input end of the molten salt electric heater 3 through the low-temperature molten salt pump 201, and the high-temperature molten salt tank 1 pumps the high-temperature molten salt to the molten salt input end of the reactor 6 through the high-temperature molten salt pump 101; the third low-temperature molten salt connecting pipe 204 is provided with a first valve assembly 206, and the fourth low-temperature molten salt connecting pipe 205 is provided with a second valve assembly 207;

[0040] The first connecting structure 4 and the second connecting structure 7 are both internal hollow structures; optionally, the first connecting structure 4 and the second connecting structure 7 can both be three-way pipe fittings, or in order to improve the mixing efficiency and mixing effect of high-temperature molten salt and low-temperature molten salt, an agitator is provided inside the first connecting structure 4, and a delivery pump is respectively provided at the connection between the second connecting structure 7 and the low-temperature molten salt tank 2 and the first connecting structure 4, which is used to pump the molten salt and adjust the delivery speed of the molten salt, and the agitator and the delivery pump are respectively electrically connected to the power system.

[0041] Preferably, the electricity used by the molten salt electric heater 3, the high-temperature molten salt pump 101, the low-temperature molten salt pump 201, the agitator and the delivery pump is valley electricity or abandoned electricity.

[0042] In this embodiment, in the energy storage stage: the low-temperature molten salt is pumped from the low-temperature molten salt tank 2 to the molten salt electric heater 3 by the low-temperature molten salt pump 201 through the first low-temperature molten salt connecting pipe 202, and the low-temperature molten salt is heated to a high temperature state in the molten salt electric heater 3 by using the off-peak electricity of the power grid, the low-priced electricity of the spot transaction, the abandoned electricity of the wind and solar power, etc., to obtain the high-temperature molten salt, and the high-temperature molten salt is stored in the high-temperature molten salt tank 1 through the second high-temperature molten salt connecting pipe 103;

[0043] Energy release stage: the high-temperature molten salt in the high-temperature molten salt tank 1 is pumped by the high-temperature molten salt pump 101 to the first connecting structure 4 through the first high-temperature molten salt connecting pipe 102, and is mixed with the low-temperature molten salt transported by the second connecting structure 7 in the first connecting structure 4 to form medium-temperature molten salt, and then transported to the reactor 6 to provide heat for the reactor 6. The specific temperature of the medium-temperature molten salt can be determined by the ratio of the high-temperature molten salt and the low-temperature molten salt before mixing. The low-temperature molten salt output by the reactor 6 is transported from the low-temperature molten salt output port to the second connecting structure 7 through the second low-temperature molten salt connecting pipe 203, and the second connecting structure 7 then transports the low-temperature molten salt to the first connecting structure 4 and the low-temperature molten salt tank 2 respectively.

[0044] This technical solution uses low-cost electricity to replace natural gas to heat molten salt. The heat stored in the molten salt is used to provide heat for the reactor. While saving natural gas resources, it also absorbs unnecessary low-priced electricity / off-peak electricity / wind and solar power and other clean energy in the power grid, thereby improving resource utilization and reducing carbon emissions and costs. At the same time, the temperature difference of the molten salt is utilized to mix high-temperature molten salt and low-temperature molten salt into medium-temperature molten salt to meet the heating temperature requirement of reactor 6, thereby reducing the volume of the molten salt to be heated and the temperature limit of the molten salt heating, making it easier to control the temperature of the medium-temperature molten salt according to the requirements of reactor 6.

[0045] Embodiment 2:

[0046] See also Figure 2 , Figure 4 and Figure 5 , which shows another electrically heated molten salt energy storage system for a reactor provided in an embodiment of the present application, comprising a low-temperature molten salt tank 2, a molten salt electric heater 3 and a high-temperature molten salt tank 1 connected in sequence; the molten salt electric heater 3 is used to heat the low-temperature molten salt into high-temperature molten salt, and the molten salt electric heater 3 is electrically connected to the power system, and the power system provides low-cost electric energy for the molten salt electric heater 3;

[0047] It also includes a reactor 6, the molten salt input end of the reactor 6 is connected to the molten salt output end of the high-temperature molten salt tank 1, the molten salt output end of the reactor 6 is connected to the molten salt input end of the low-temperature molten salt tank 2 through a first pipeline, and the molten salt output end of the reactor 6 is also connected to the molten salt input end of the reactor 6 through a second pipeline, so that the reactor 6 is heated under the energy supply of the medium-temperature molten salt obtained by mixing the high-temperature molten salt and the low-temperature molten salt; a first valve assembly 206 is arranged on the first pipeline, and a second valve assembly 207 is arranged on the second pipeline.

[0048] In a specific embodiment, the molten salt output end of the reactor 6 is provided with a low-temperature molten salt output port, and the number of the low-temperature molten salt output ports is two. At this time, the first pipeline and the second pipeline are independent of each other, the first pipeline includes a third low-temperature molten salt connecting pipe 204, and the second pipeline includes a fourth low-temperature molten salt connecting pipe 205; the electric heating molten salt energy storage system also includes a first connecting structure 4, a high-temperature molten salt pump 101 and a low-temperature molten salt pump 201;

[0049] The molten salt output end of the low-temperature molten salt tank 2 is connected to the molten salt input end of the molten salt electric heater 3 through the first low-temperature molten salt connecting pipe 202, the molten salt output end of the molten salt electric heater 3 is connected to the molten salt input end of the high-temperature molten salt tank 1 through the second high-temperature molten salt connecting pipe 103, the molten salt output end of the high-temperature molten salt tank 1 is connected to the first end of the first connecting structure 4 through the first high-temperature molten salt connecting pipe 102, the second end of the first connecting structure 4 is connected to the molten salt input end of the reactor 6 through the medium-temperature molten salt connecting pipe 5, a low-temperature molten salt output port of the reactor 6, and the third low-temperature molten salt connecting pipe 204 and the low-temperature molten salt tank 2 are connected in sequence, and another low-temperature molten salt output port of the reactor 6 is connected to the third end of the first connection structure 4 through the fourth low-temperature molten salt connecting pipe 205; wherein, the low-temperature molten salt tank 2 pumps the low-temperature molten salt to the molten salt input end of the molten salt electric heater 3 through the low-temperature molten salt pump 201, and the high-temperature molten salt tank 1 pumps the high-temperature molten salt to the molten salt input end of the reactor 6 through the high-temperature molten salt pump 101; a first valve assembly 206 is provided on the third low-temperature molten salt connecting pipe 204, and a second valve assembly 207 is provided on the fourth low-temperature molten salt connecting pipe 205;

[0050] The first connecting structure 4 is an internal hollow structure; optionally, the first connecting structure 4 can be a three-way pipe fitting, or in order to improve the mixing efficiency and mixing effect of the high-temperature molten salt and the low-temperature molten salt, an agitator is provided inside the first connecting structure 4, and both low-temperature molten salt output ports are provided with delivery pumps for pumping the molten salt and adjusting the delivery speed of the molten salt, and the agitator and the delivery pump are electrically connected to the power system respectively.

[0051] Preferably, the electricity used by the molten salt electric heater 3, the high-temperature molten salt pump 101, the low-temperature molten salt pump 201, the agitator and the delivery pump is valley electricity or abandoned electricity.

[0052] In this embodiment, in the energy storage stage: the low-temperature molten salt is pumped from the low-temperature molten salt tank 2 to the molten salt electric heater 3 by the low-temperature molten salt pump 201 through the first low-temperature molten salt connecting pipe 202, and the low-temperature molten salt is heated to a high temperature state in the molten salt electric heater 3 by using the off-peak electricity of the power grid, the low-priced electricity of the spot transaction, the abandoned electricity of the wind and solar power, etc., to obtain the high-temperature molten salt, and the high-temperature molten salt is stored in the high-temperature molten salt tank 1 through the second high-temperature molten salt connecting pipe 103;

[0053] Energy release stage: the high-temperature molten salt in the high-temperature molten salt tank 1 is pumped by the high-temperature molten salt pump 101 to the first connecting structure 4 through the first high-temperature molten salt connecting pipe 102, and is mixed with the low-temperature molten salt transported by the fourth low-temperature molten salt connecting pipe 205 in the first connecting structure 4 to form medium-temperature molten salt, and then transported to the reactor 6 to provide heat for the reactor 6. The specific temperature of the medium-temperature molten salt can be determined by the ratio of the high-temperature molten salt and the low-temperature molten salt before mixing. The low-temperature molten salt output by the reactor 6 is transported to the third low-temperature molten salt connecting pipe 204 and the fourth low-temperature molten salt connecting pipe 205 respectively through two low-temperature molten salt output ports, and the low-temperature molten salt through the third low-temperature molten salt connecting pipe 204 is transported back to the low-temperature molten salt tank 2, and the low-temperature molten salt through the fourth low-temperature molten salt connecting pipe 205 is transported to the first connecting structure 4.

[0054] This technical solution uses low-cost electricity to replace natural gas to heat molten salt. The heat stored in the molten salt is used to provide heat for the reactor. While saving natural gas resources, it also absorbs unnecessary low-priced electricity / off-peak electricity / wind and solar power and other clean energy in the power grid, thereby improving resource utilization and reducing carbon emissions and costs. At the same time, the temperature difference of the molten salt is utilized to mix high-temperature molten salt and low-temperature molten salt into medium-temperature molten salt to meet the heating temperature requirement of reactor 6, thereby reducing the volume of the molten salt to be heated and the temperature limit of the molten salt heating, making it easier to control the temperature of the medium-temperature molten salt according to the requirements of reactor 6.

[0055] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.

Claims

1. An electrically heated molten salt energy storage system for a reactor, characterized in that: It comprises a low-temperature molten salt tank (2), a molten salt electric heater (3) and a high-temperature molten salt tank (1) which are connected in sequence; the molten salt electric heater (3) is used to heat the low-temperature molten salt into high-temperature molten salt; It also includes a reactor (6), wherein the molten salt input end of the reactor (6) is connected to the molten salt output end of the high-temperature molten salt tank (1), and the molten salt output end of the reactor (6) is connected to the molten salt input end of the low-temperature molten salt tank (2) through a first pipeline, and the molten salt output end of the reactor (6) is also connected to the molten salt input end of the reactor (6) through a second pipeline; a first valve assembly (206) is provided on the first pipeline, and a second valve assembly (207) is provided on the second pipeline.

2. An electrically heated molten salt energy storage system for a reactor according to claim 1, characterized in that: The molten salt output end of the reactor (6) is provided with a low-temperature molten salt output port, and the number of the low-temperature molten salt output ports is one or two.

3. An electrically heated molten salt energy storage system for a reactor according to claim 2, characterized in that: When the number of the low-temperature molten salt output ports of the reactor (6) is one, the first pipeline partially overlaps with the second pipeline, the first pipeline includes a second low-temperature molten salt connecting pipe (203) and a third low-temperature molten salt connecting pipe (204), and the second pipeline includes a second low-temperature molten salt connecting pipe (203) and a fourth low-temperature molten salt connecting pipe (205); The electrically heated molten salt energy storage system further comprises a first connection structure (4) and a second connection structure (7), wherein the first connection structure (4) and the second connection structure (7) are both internally hollow structures; The first end of the first connection structure (4) is connected to the molten salt output end of the high-temperature molten salt tank (1), and the second end of the first connection structure (4) is connected to the molten salt input end of the reactor (6); the first end of the second connection structure (7) is connected to the molten salt output end of the reactor (6) through the second low-temperature molten salt connection pipe (203), and the second end of the second connection structure (7) is connected to the molten salt input end of the low-temperature molten salt tank (2) through the third low-temperature molten salt connection pipe (204); the third end of the first connection structure (4) is connected to the third end of the second connection structure (7) through the fourth low-temperature molten salt connection pipe (205); wherein the first valve assembly (206) is provided on the third low-temperature molten salt connection pipe (204), and the second valve assembly (207) is provided on the fourth low-temperature molten salt connection pipe (205).

4. The electrically heated molten salt energy storage system for a reactor according to claim 3, characterized in that: The first connection structure (4) is provided with an agitator inside, and the second connection structure (7) is provided with a delivery pump at the connection point with the low-temperature molten salt tank (2) and the first connection structure (4), respectively, for pumping molten salt and adjusting the delivery speed of the molten salt.

5. The electrically heated molten salt energy storage system for a reactor according to claim 2, characterized in that: When the number of low-temperature molten salt output ports of the reactor (6) is two, the first pipeline and the second pipeline are independent of each other, the first pipeline includes a third low-temperature molten salt connecting pipe (204), and the second pipeline includes a fourth low-temperature molten salt connecting pipe (205); The electrically heated molten salt energy storage system further comprises a first connection structure (4), wherein the first connection structure (4) is an internal hollow structure; The first end of the first connection structure (4) is connected to the molten salt output end of the high-temperature molten salt tank (1), and the second end of the first connection structure (4) is connected to the molten salt input end of the reactor (6); one of the low-temperature molten salt output ports is connected to the molten salt input end of the low-temperature molten salt tank (2) through the third low-temperature molten salt connecting pipe (204), and the other low-temperature molten salt output port is connected to the third end of the first connection structure (4) through the fourth low-temperature molten salt connecting pipe (205); wherein the first valve assembly (206) is provided on the third low-temperature molten salt connecting pipe (204), and the second valve assembly (207) is provided on the fourth low-temperature molten salt connecting pipe (205).

6. The electrically heated molten salt energy storage system for a reactor according to claim 5, characterized in that: The first connection structure (4) is provided with an agitator inside, and the two low-temperature molten salt output ports are provided with delivery pumps for pumping the molten salt and adjusting the delivery speed of the molten salt.

7. The electrically heated molten salt energy storage system for a reactor according to claim 1, characterized in that: The low-temperature molten salt tank (2) pumps the low-temperature molten salt to the molten salt input end of the molten salt electric heater (3) through a low-temperature molten salt pump (201), and the high-temperature molten salt tank (1) pumps the high-temperature molten salt to the molten salt input end of the reactor (6) through a high-temperature molten salt pump (101).

8. The electrically heated molten salt energy storage system for a reactor according to claim 1, characterized in that: The electric energy used by the molten salt electric heater (3) is valley electricity or abandoned electricity.

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