CN211451998U

CN211451998U - Single-tank high-temperature energy storage device

Info

Publication number: CN211451998U
Application number: CN201922486955.3U
Authority: CN
Inventors: 申雁鸣; 汪慰军
Original assignee: Hemai New Energy Technology Shanghai Co ltd
Current assignee: Hemai New Energy Technology Shanghai Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-08
Anticipated expiration: 2029-12-31

Abstract

A single-tank high-temperature energy storage device comprises a shell and an inner container, wherein a semicircular heat exchange tube is welded on the outer wall of the inner container in a spiral manner, a heat conduction oil inlet is formed below the semicircular heat exchange tube, and a heat conduction oil outlet is formed above the semicircular heat exchange tube; a tank material port is formed in the upper portion of the inner container, fused salt is contained in the inner container, an electric heating device is further arranged in the inner container, a heating pipe of the electric heating device is embedded in the fused salt, and a power-on end of the electric heating device penetrates through the inner container to be connected with a heating cable. The utility model overcomes the defects of the prior art, the fused salt in the application is only used as an energy storage material, and the heat conduction oil is used as a heat transfer medium, so that the problem of material solidification and blockage in the semicircular heat exchange pipe when the fused salt is used as the heat transfer medium is avoided; and the heat conduction oil and the fused salt exchange heat through the inner container wall, so that the heat conduction oil and the fused salt are completely isolated, and the safety risks of combustion, explosion and the like caused by the fact that the heat conduction oil is leaked due to corrosion of the fused salt to the heat exchange pipe, particularly a welding point, caused by the fact that the heat conduction oil is arranged in the inner container are avoided.

Description

Single-tank high-temperature energy storage device

Technical Field

The utility model relates to an energy memory technical field, concretely relates to single jar high temperature energy memory.

Background

The molten salt heat storage is one of the common mainstream technologies of high-temperature heat storage, and the common molten salt of the conventional molten salt energy storage system is a heat transfer medium even though an energy storage material is used as an energy storage material, so that the system is suitable for a large-scale system, once the system is started, the system can be operated all the time, the molten salt is required to be kept in a liquid state, and the molten salt is prevented from being solidified in a pipeline or a molten salt tank.

However, for some medium and small-sized systems, many application scenes are discontinuous operation and sometimes operate according to seasons, and if energy is consumed and the molten salt is kept in a molten state all the time, energy is wasted, so that the method is not suitable for the technical scheme that the molten salt is used as an energy storage material and a heat transfer medium.

The utility model discloses a single jar fused salt high temperature energy storage equipment to the fused salt is as energy storage material, regards as heat transfer medium with the conduction oil, and the device security is high, can open as required and stop, does not worry that the fused salt solidifies and blocks up the pipeline, and the material solidifies and can heat once more in the fused salt jar melts, satisfies middle-size and small-size high temperature energy storage system's nimble application demand.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a single-tank high-temperature energy storage device, which overcomes the defects of the prior art and has reasonable design, the fused salt in the application is only used as an energy storage material, the heat transfer oil is used as a heat transfer medium, and the problem of material solidification and blockage in a semicircular heat exchange pipe when the fused salt is used as the heat transfer medium is avoided; and the heat conduction oil and the fused salt exchange heat through the inner container wall, so that the heat conduction oil and the fused salt are completely isolated, and the safety risks of combustion, explosion and the like caused by the fact that the heat conduction oil is leaked due to corrosion of the fused salt to the heat exchange pipe, particularly a welding point, caused by the fact that the heat conduction oil is arranged in the inner container are avoided.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a single-tank high-temperature energy storage device comprises a shell and an inner container, wherein the inner container is fixedly arranged in an inner cavity of the shell, a semicircular heat exchange tube is welded on the outer wall of the inner container in a spiral shape, the lower part of the semicircular heat exchange tube is fixedly connected with one end of a heat conduction oil inlet, the other end of the heat conduction oil inlet penetrates through the shell to be connected with a port of a heat utilization system, the upper part of the semicircular heat exchange tube is fixedly connected with one end of a heat conduction oil outlet, and the other end of the heat conduction oil outlet is connected with the port of the; the electric heating device is characterized in that a tank opening is formed in the upper portion of the inner container, fused salt is contained in the inner container, an electric heating device is further arranged in the inner container, a heating pipe of the electric heating device is buried in the fused salt, and a power-on end of the electric heating device penetrates through the upper surface of the inner container and is connected with a heating cable.

Preferably, an insulating layer is filled between the outer shell and the inner container.

Preferably, a heat conducting sheath is fixedly sleeved on the outer surface of the heating pipe of the electric heating device.

The utility model provides a single jar high temperature energy memory. The method has the following beneficial effects:

1. the fused salt is only used as an energy storage material, an electric heating device is arranged in the liner, and the material can be heated in the liner again after being solidified.

2. The heat conducting oil is used as a heat transfer medium, so that the problem of solidification and blockage of materials in the semicircular heat exchange tube when the molten salt is used as the heat transfer medium is solved.

3. Heat transfer oil and fused salt exchange heat through the inner container wall, the heat transfer oil and the fused salt are completely isolated, and the heat transfer oil pipeline is prevented from being internally arranged in the inner container, so that the heat transfer oil is prevented from being leaked to cause safety risks such as combustion and explosion due to corrosion of the fused salt to the heat transfer pipe, particularly a welding point.

Drawings

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the description of the prior art will be briefly described below.

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic view of the structure of the inner container of the present invention;

the reference numbers in the figures illustrate:

1. a housing; 2. an inner container; 3. a semicircular heat exchange tube; 4. a heat transfer oil inlet; 5. a heat conducting oil outlet; 6. a material tank opening; 7. melting a salt; 8. an electric heating device; 9. and (7) an insulating layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention will be combined below to clearly and completely describe the technical solutions of the present invention.

As shown in fig. 2, a single-tank high-temperature energy storage device comprises a shell 1 and an inner container 2, wherein the inner container 2 is fixedly installed in an inner cavity of the shell 1, a semicircular heat exchange tube 3 is welded on the outer wall of the inner container 2 in a spiral shape, one end of a heat conduction oil inlet 4 is fixedly connected below the semicircular heat exchange tube 3, the other end of the heat conduction oil inlet 4 penetrates through the shell 1 to be connected with a port of a heat utilization system, one end of a heat conduction oil outlet 5 is fixedly connected above the semicircular heat exchange tube 3, and the other end of the heat conduction oil outlet 5 is connected with the port of the; a tank opening 6 is arranged above the inner container 2, fused salt 7 is contained in the inner container 2, an electric heating device 8 is further arranged in the inner container 2, a heating pipe of the electric heating device 8 is embedded in the fused salt 7, and the electrifying end of the electric heating device 8 penetrates through the upper surface of the inner container 2 to be connected with a heating cable.

The working principle is as follows: in valley electricity, the electric heating device 8 is connected with an external power supply through a heating cable, so that the heating pipe of the electric heating device 8 heats the molten salt 7 in the inner container 2, and heat can be accumulated in the molten salt 7 in valley electricity, in the embodiment, the temperature of the molten salt 7 can be accurately controlled through the silicon controlled rectifier, heating is stopped when the temperature reaches the upper limit temperature, and heat exchange is carried out between heat conduction oil in the semicircular heat exchange pipe 3 and the molten salt 7 through the container wall of the inner container 2; therefore, in the peak electricity period, the external power supply of the electric heating device 8 is cut off, and heat is supplied to heat utilization systems such as a steam generator and industrial heating through heat conduction oil circulation in the semicircular heat exchange tube 3.

In the whole process, the fused salt 7 is only used as an energy storage material, so that the fused salt 7 can be heated in the fused salt tank again after being solidified, and the heat conduction oil in the semicircular heat exchange tube 3 is used as a heat transfer medium, so that the problem of material solidification and blockage in the pipeline when the fused salt 7 is used as the heat transfer medium is avoided. The heat conduction oil and the fused salt are subjected to heat exchange through the container wall, the heat conduction oil and the fused salt are completely isolated, the situation that the heat conduction oil pipeline is arranged in a tank is avoided, and safety risks such as combustion and explosion caused by the fact that the heat conduction oil is leaked due to corrosion of the fused salt to the heat exchange pipe, particularly a welding point is avoided.

In this embodiment, an insulating layer 9 is filled between the outer shell 1 and the inner container 2. The heat-insulating device is used for insulating the inner container 2 so as to prevent the heat in the inner container 2 and the semicircular heat exchange tubes 3 from being dissipated.

In this embodiment, a heat conducting sheath is fixedly sleeved on the outer surface of the heating tube of the electric heating device 8. The heat conduction sheath can be a stainless steel sheath, so that the heating pipe of the electric heating device 8 is protected, the heating pipe of the electric heating device 8 can be prevented from being in direct contact with the molten salt 7, and the safety of the electric heating device 8 is improved.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a single jar high temperature energy memory, includes shell (1) and inner bag (2), its characterized in that: the heat-conducting oil heat exchanger is characterized in that the inner container (2) is fixedly arranged in an inner cavity of the shell (1), a semicircular heat exchange tube (3) is welded on the outer wall of the inner container (2) in a spiral shape, one end of a heat-conducting oil inlet (4) is fixedly connected to the lower portion of the semicircular heat exchange tube (3), the other end of the heat-conducting oil inlet (4) penetrates through the shell (1) to be connected with a port of a heat utilization system, one end of a heat-conducting oil outlet (5) is fixedly connected to the upper portion of the semicircular heat exchange tube (3), and the other end of the heat-conducting oil outlet (5); the heating device is characterized in that a tank material opening (6) is formed in the upper portion of the inner container (2), the inner container (2) is filled with molten salt (7), an electric heating device (8) is further arranged inside the inner container (2), a heating pipe of the electric heating device (8) is buried in the molten salt (7) in an embedded mode, and the electrifying end of the electric heating device (8) penetrates through the upper surface of the inner container (2) and is connected with a heating cable.

2. The single tank high temperature energy storage device of claim 1, wherein: an insulating layer (9) is filled between the shell (1) and the inner container (2).

3. The single tank high temperature energy storage device of claim 1, wherein: and a heat conducting sheath is fixedly sleeved on the outer surface of a heating pipe of the electric heating device (8).