Molten salt heat storage device for heat storage of heat supply backpressure unit

Abstract

The utility model belongs to the technical field of fused salt heat storage, and particularly relates to a fused salt heat storage device for heat storage of a heat supply backpressure unit, which comprises a fused salt tank, and further comprises a flow guide pipe, a gathering groove, a dispersing blade, an auger, a transmission rod, a transverse gear, a longitudinal gear and a motor which are arranged on one side of the fused salt tank, according to the device, molten salt located at the bottom of the molten salt tank can be gradually driven to the top of the molten salt tank through rotation work between the flow guide pipe and the auger, so that the molten salt can obtain sufficient heat exchange work, the heat exchange efficiency is improved, and the service life of the molten salt tank is prolonged. And under the action of the dispersing blades, the contact time between the fused salt and air can be prolonged, the heat exchange efficiency is further improved, and heat release work can be more sufficient and efficient.

Description

Technical Field

[0001] This utility model belongs to the field of molten salt thermal storage technology, specifically relating to a molten salt thermal storage device for thermal storage of a heating back pressure unit. Background Technology

[0002] Molten salt thermal energy storage refers to a sensible heat storage technology that uses the temperature difference of materials during heating or cooling to store and release thermal energy. This type of thermal energy storage material remains liquid throughout the entire operating temperature range. Unlike phase change thermal energy storage, which undergoes a change of state when the temperature changes, molten salt thermal energy storage has advantages such as high operating temperature, wide operating temperature range, strong heat transfer capacity, and good economy, making it the preferred medium for heat transfer and storage in solar thermal power plants.

[0003] A review of announcement number CN202928422U reveals a molten salt thermal storage device. This technology discloses "a main molten salt tank, a secondary molten salt tank, a molten salt pump, and connecting pipes; the bottom of the main molten salt tank and the bottom of the secondary molten salt tank are connected through the connecting pipes, and the molten salt pump is installed at the outlet of the secondary molten salt tank. The molten salt thermal storage device provided by this utility model stores molten salt through a main molten salt tank and a secondary molten salt tank. The main function of the main molten salt tank is storage, and the main function of the secondary molten salt tank is transportation. Therefore, while increasing the molten salt storage capacity, its core feature is reducing the shaft length of the molten salt pump, thereby greatly reducing the cost of the entire molten salt thermal storage device and promoting the widespread application of large-capacity molten salt thermal storage devices."

[0004] Although this design can reduce the shaft length of the molten salt pump, thereby greatly reducing the cost of the entire molten salt thermal storage device and promoting the application of large-capacity molten salt thermal storage devices, during the molten salt heat conversion process, the accumulated molten salt mainly relies on the part close to the air for heat conversion. Therefore, the molten salt at the bottom will have difficulty in heat conversion, which reduces its thermal conductivity and makes it difficult to carry out efficient heat conduction.

[0005] To address the aforementioned issues, this application proposes a molten salt thermal storage device for thermal storage in a heating back-pressure unit. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides a molten salt heat storage device for back-pressure heating units. Through the rotation of the guide pipe and the auger, the molten salt at the bottom of the tank is gradually moved to the top, allowing for sufficient heat exchange. Furthermore, the dispersing blades increase the contact time between the molten salt and air, further enhancing heat exchange efficiency and making the heat release process more complete and efficient.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a molten salt thermal storage device for a back-pressure heating unit, comprising a molten salt tank, and further comprising a guide pipe, a gathering groove, a dispersing blade, an auger, a transmission rod, a transverse gear, a longitudinal gear, and a motor disposed on one side of the molten salt tank. The guide pipe is fixedly installed on the inner surface of the molten salt tank, and the gathering groove is also provided on one side of the guide pipe. The dispersing blade is also fixedly installed on the other side of the guide pipe. The inner surface of the guide pipe is also rotatably connected to the auger. One end of the auger is rotatably connected to the inner surface of the molten salt tank, and the transmission rod, which is rotatably connected to the molten salt tank, is fixedly installed on the other end of the auger. The transverse gear is fixedly installed on the end of the transmission rod away from the auger. The transverse gear meshes with the longitudinal gear rotatably disposed on the surface of the motor, and the motor is fixedly installed on the surface of the molten salt tank.

[0008] As a preferred embodiment of the molten salt thermal storage device for thermal storage in a back-pressure heating unit according to this utility model, the guide pipe is in the shape of a hollow cylinder, and the inner surface diameter of the guide pipe is the same as the diameter of the auger.

[0009] In a preferred embodiment of the molten salt thermal storage device for a back-pressure heating unit according to this utility model, the gathering tank is formed at an equal angle on the surface of the guide pipe.

[0010] As a preferred embodiment of the molten salt thermal storage device for thermal storage of a back-pressure heating unit according to this utility model, the shape of the dispersion blades is a skirt-shaped structure.

[0011] In a preferred embodiment of the molten salt thermal storage device for a back-pressure heating unit according to this utility model, the length of the auger is greater than the length of the guide pipe.

[0012] In a preferred embodiment of the molten salt thermal storage device for a back-pressure heating unit according to this utility model, the transverse gear and the longitudinal gear are arranged perpendicularly to each other.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the rotation between the guide pipe and the auger can gradually drive the molten salt at the bottom of the molten salt tank to the top of the molten salt tank, so that it can get sufficient heat exchange. Under the action of the dispersing blade, the contact time between the molten salt and the air can be increased, further increasing the efficiency of heat exchange, and making the heat release work more complete and efficient. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the molten salt tank in this utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the molten salt tank and the guide pipe in this utility model;

[0018] Figure 4 This is a schematic diagram of the molten salt movement trajectory structure in this utility model;

[0019] In the picture:

[0020] 1. Molten salt tank; 2. Guide pipe; 3. Gathering tank; 4. Dispersing blade; 5. Screwdriver; 6. Drive rod; 7. Horizontal gear; 8. Vertical gear; 9. Motor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 protection scope of the present utility model.

[0022] Example 1

[0023] like Figure 1 As shown:

[0024] A molten salt thermal storage device for thermal storage in a back-pressure heating unit includes a molten salt tank 1.

[0025] In this implementation plan: The existing announcement number CN202928422U discloses a molten salt thermal storage device. This patent discloses a main molten salt tank. The molten salt tank 1 in this application adopts the same technical means as the prior art. The technical means will not be described in detail here. For details on the improvement of the prior art, please refer to the disclosed technology below. In order to solve the technical problems existing in the prior art, such as the "In the process of molten salt heat conversion, the accumulated molten salt mainly relies on the part close to the air for heat conversion. Then the molten salt at the bottom will have difficulty in heat conversion, which reduces its thermal conductivity and makes it difficult to carry out efficient heat conduction" in combination. This problem is obviously a real and difficult problem to solve. In view of this, in order to solve the above problems, a guide pipe 2 and a collection tank 3 are added on the basis.

[0026] Furthermore:

[0027] like Figure 1 - Figure 4 As shown:

[0028] In conjunction with the above, the system also includes a guide pipe 2, a gathering trough 3, a dispersing blade 4, an auger 5, a transmission rod 6, a transverse gear 7, a longitudinal gear 8, and a motor 9, all located on one side of the molten salt tank 1. The guide pipe 2 is fixedly installed on the inner surface of the molten salt tank 1, and a gathering trough 3 is provided on one side of the guide pipe 2. A dispersing blade 4 is fixedly installed on the other side of the guide pipe 2. The inner surface of the guide pipe 2 is rotatably connected to the auger 5. One end of the auger 5 is rotatably connected to the inner surface of the molten salt tank 1, and a transmission rod 6, which is rotatably connected to the molten salt tank 1, is fixedly installed at the other end of the auger 5. A transverse gear 7 is fixedly installed at the end of the transmission rod 6 away from the auger 5. The transverse gear 7 meshes with the longitudinal gear 8, which is rotatably mounted on the surface of the motor 9. The motor 9 is fixedly installed on the surface of the molten salt tank 1.

[0029] In this implementation scheme: when heat exchange is required for the molten salt inside the molten salt tank 1, the motor 9 located at the top of the molten salt tank 1 can be started. At this time, the motor 9 will drive the longitudinal gear 8 to rotate, and the longitudinal gear 8 will mesh with the transverse gear 7 and drive the transmission rod 6 and the auger 5 connected to the end of the transmission rod 6 to rotate simultaneously. When the auger 5 is located at the bottom of the guide pipe 2, it will carry the molten salt at the bottom of the molten salt tank 1 around the guide pipe 2 through the collection tank 3 to the inside of the guide pipe 2. As the auger 5 gradually rotates, the molten salt will gradually be transported from the bottom of the molten salt tank 1 to the top of the guide pipe 2. Subsequently, the molten salt will gradually slide down along the surface of the dispersing blade 4 and fall down again. During this process, the molten salt will fully exchange the heat inside, and its heat exchange efficiency will be effectively improved.

[0030] Furthermore:

[0031] In an optional embodiment, the guide tube 2 is a hollow cylinder, and the inner surface diameter of the guide tube 2 is the same as the diameter of the auger 5.

[0032] In this embodiment, the hollow guide tube 2 can accommodate the auger 5 to rotate inside it, and in the process, the position of the molten salt is changed, providing an effective spatial basis for heat exchange.

[0033] Furthermore:

[0034] In an optional embodiment, the gathering groove 3 is formed at an equal angle on the surface of the guide tube 2.

[0035] In this embodiment, the equidistantly angled gathering groove 3 allows the molten salt around the guide pipe 2 to quickly enter the interior of the guide pipe 2 through the rotation of the auger 5, thereby allowing the molten salt at the bottom of the molten salt tank 1 to reach the top of the guide pipe 2 for heat exchange.

[0036] Furthermore:

[0037] In an optional embodiment, the dispersed leaf 4 has a skirt-like shape.

[0038] In this embodiment, the clustered dispersion blades 4 can disperse the molten salt when it reaches the location of the dispersion blades 4, thereby increasing the contact time between the molten salt and the air and increasing the heat exchange time.

[0039] Furthermore:

[0040] In an optional embodiment, the length of the screw conveyor 5 is greater than the length of the guide tube 2.

[0041] In this embodiment, the auger 5, which is higher than the height of the guide pipe 2, can carry the molten salt at the bottom of the molten salt tank 1 to the top of the guide pipe 2 when the auger 5 rotates, thereby achieving the purpose of molten salt circulation and transfer.

[0042] Furthermore:

[0043] In an optional embodiment, the transverse gear 7 and the longitudinal gear 8 are arranged perpendicular to each other.

[0044] In this embodiment, the horizontal gear 7 and the vertical gear 8, which are arranged perpendicularly to each other, can perform momentum direction conversion when the motor 9 generates power, thereby achieving stable rotation of the auger 5.

[0045] The working principle and usage process of this utility model are as follows: When heat exchange is required in the molten salt inside the molten salt tank 1, the motor 9 located at the top of the molten salt tank 1 can be started. At this time, the motor 9 will drive the longitudinal gear 8 to rotate, and the longitudinal gear 8 will mesh with the transverse gear 7 and drive the transmission rod 6 and the auger 5 connected to the end of the transmission rod 6 to rotate simultaneously. When the auger 5 is located at the bottom of the guide pipe 2, it will carry the molten salt at the bottom of the molten salt tank 1 around the guide pipe 2 through the collection tank 3 to the inside of the guide pipe 2. As the auger 5 gradually rotates, the molten salt will gradually be transported from the bottom of the molten salt tank 1 to the top of the guide pipe 2. Then the molten salt will gradually slide down along the surface of the dispersing blade 4 and fall down again. In this process, the molten salt will fully exchange the heat inside, and its heat exchange efficiency will be effectively improved.

[0046] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A molten salt thermal storage device for a back-pressure heating unit, comprising a molten salt tank (1), characterized in that: It also includes a guide pipe (2), a gathering tank (3), a dispersing blade (4), an auger (5), a transmission rod (6), a transverse gear (7), a longitudinal gear (8), and a motor (9) disposed on one side of the molten salt tank (1). The guide pipe (2) is fixedly installed on the inner surface of the molten salt tank (1), and the gathering tank (3) is also provided on one side of the guide pipe (2). The dispersing blade (4) is also fixedly disposed on the other side of the guide pipe (2). The inner surface of the guide pipe (2) also rotates with the auger (5). The auger (5) is rotatably connected to the inner surface of the molten salt tank (1) at one end, and the transmission rod (6) rotatably connected to the molten salt tank (1) is fixedly installed at the other end of the auger (5). The transverse gear (7) is also fixedly installed at the end of the transmission rod (6) away from the auger (5). The transverse gear (7) meshes with the longitudinal gear (8) rotatably disposed on the surface of the motor (9). The motor (9) is fixedly installed on the surface of the molten salt tank (1).

2. The molten salt thermal storage device for thermal storage of a back-pressure heating unit according to claim 1, characterized in that: The guide tube (2) is a hollow cylinder, and the inner surface diameter of the guide tube (2) is the same as the diameter of the auger (5).

3. The molten salt thermal storage device for thermal storage of a back-pressure heating unit according to claim 1, characterized in that: The gathering groove (3) is formed at equal angles on the surface of the guide pipe (2).

4. The molten salt thermal storage device for thermal storage of a back-pressure heating unit according to claim 1, characterized in that: The shape of the dispersed leaf (4) is a skirt-like structure.

5. The molten salt thermal storage device for thermal storage of a back-pressure heating unit according to claim 1, characterized in that: The length of the auger (5) is greater than the length of the guide pipe (2).

6. The molten salt thermal storage device for thermal storage of a back-pressure heating unit according to claim 1, characterized in that: The transverse gear (7) and the longitudinal gear (8) are arranged perpendicular to each other.

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