High-temperature heat accumulator

Abstract

The utility model discloses a high-temperature heat accumulator, belongs to the technical field of heat accumulators, and solves the problem that the heat exchange efficiency cannot reach the optimal state due to the fact that fluid needing to be heated is introduced into a heat-producing structure, meanwhile, heat-carrying fluid is introduced into a heat-receiving structure, and heat exchange is completed after the fluid and the heat-carrying fluid are in full contact with each other. The heat insulation base and the heat insulation cover are fixedly connected to the two ends of the heat insulation peripheral shell and seal the two ends of the heat insulation peripheral shell, a heat storage space is formed among the heat insulation peripheral shell, the heat insulation base and the heat insulation cover, and heat storage liquid is filled in the heat storage space. The heat exchange assembly is connected with a pipeline needing heat supply, fluid is led into the heating pipe, the heat storage liquid heats the heating pipe, the heat storage liquid transfers heat, the temperature of the heat storage liquid is always larger than that of the heating pipe and the fluid in the heating pipe, and through the heat insulation effect of the heat insulation base, the peripheral shell and the cover, the heat exchange assembly keeps sufficient contact area when the fluid passes through. Therefore, fluid is heated, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat accumulators, in particular to a high-temperature heat accumulator. Background Art

[0002] A heat accumulator is a thermal energy storage device that is mainly used to balance the system load when the demand for thermal energy does not match the supply. They improve energy efficiency and reduce energy waste by storing thermal energy and releasing it when needed. The working principle of the heat accumulator includes two main forms: sensible heat storage and phase change heat storage. Sensible heat storage relies on the temperature change of the storage medium (such as water or oil) to store and release thermal energy, while phase change heat storage uses the latent heat absorbed or released by the material during the phase change process. Heat accumulators are widely used in industrial boiler systems, cogeneration, central heating systems, and waste heat recovery systems. They help stabilize boiler loads, balance peak loads, and improve the power consumption and storage efficiency of new energy power generation equipment with large fluctuations in power generation.

[0003] The current heat accumulator is a large tank structure connected to the steam boiler, which is generally connected to the heat generating structure and the heat receiving structure, so that the two can exchange heat in the heat accumulator to complete the heat exchange. However, the current heat accumulator usually performs heat exchange in real time, that is, the heat generating structure introduces the required heated fluid, and at the same time, the heat receiving structure introduces the heat-carrying fluid. After the two are fully in contact, the heat exchange is completed. Such heat exchange efficiency cannot reach the optimal state.

[0004] Therefore, a high temperature heat storage device is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a high-temperature heat accumulator.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A high-temperature heat accumulator comprises an insulating shell with two open ends, and an insulating base and an insulating cover fixedly connected to and sealing the two ends of the insulating shell, a heat storage space is formed between the three, the heat storage space is filled with heat storage liquid, a heat exchange component penetrating the insulating cover and a plurality of heating components are arranged in the heat storage space, and the heating component is arranged in the heat exchange component.

[0008] Preferably, the thermal storage fluid is thermal oil.

[0009] Preferably, the thermal insulation shell, thermal insulation cover and thermal insulation base are all aluminum silicate wool boards.

[0010] Preferably, the heat insulating base is hollow and filled with rock wool.

[0011] Preferably, the insulation cover is provided with a plurality of through holes distributed in an array, and the heating assembly includes a sealing flange fixedly connected in the through hole, a heating tube fixedly connected to the sealing flange, a connecting tube fixedly connected to the sealing flange, an upper flange fixedly connected to the upper end of the connecting tube, a connecting tube fixedly connected to the top surface of the upper flange, and a plug connected to the connecting tube, wherein the end of the plug away from the connecting tube can be opened and closed, and the diameter of the plug is smaller than the diameter of the connecting tube, and the connecting tube, the connecting tube, and the heating tube are all connected.

[0012] Preferably, the heating tube is U-shaped.

[0013] Preferably, an inner peripheral wall at the upper end of the insert is provided with an internal thread, and the internal thread is threadedly connected with a sealing bolt for closing the insert opening.

[0014] Preferably, the heat exchange assembly includes a mountain-shaped insulated horizontal tube, an insulated vertical tube connected to the insulated horizontal tube, and several groups of heat exchange tubes connected to the bottom of the insulated horizontal tube. The heat exchange tubes include several heat exchange spiral tubes, and upper connecting tubes and lower connecting tubes connecting adjacent heat exchange spiral tubes. The insulated vertical tube is arranged through the insulation cover, and the upper connecting tubes and lower connecting tubes are alternately arranged between adjacent heat exchange spiral tubes. The insulated vertical tube is coaxially connected with an inlet tube, the diameter of the insulated vertical tube is smaller than the diameter of the insulated vertical tube, and the upper end of the insulated tube is fixedly connected with a connecting flange. The thermal conductivity of the insulated vertical tube and the insulated horizontal tube is the same, and the thermal conductivity of the heat exchange tube is greater than that of the insulated horizontal tube.

[0015] Preferably, the number of the heat exchange spiral tubes in each group of heat exchange tubes is four, the number of the lower connecting tubes in each group of heat exchange tubes is two, the number of the upper connecting tube in each group of heat exchange tubes is one, the heat-insulating transverse tube includes a transverse tube and three longitudinal tubes connected thereto, two of the heat exchange spiral tubes are connected to two adjacent longitudinal tubes, and the remaining two heat exchange spiral tubes are evenly spaced between the two adjacent longitudinal tubes, the two lower connecting tubes are respectively connected to the lower ends of the two outermost heat exchange spiral tubes and the two middle heat exchange spiral tubes, and the upper connecting tube is connected to the upper ends of the two middle heat exchange spiral tubes.

[0016] Preferably, the heat-insulating cover is provided with an inlet and outlet slot which can be opened and closed.

[0017] The utility model has the following beneficial effects:

[0018] When the utility model is actually applied, the fluid to be heated is sent into the heating pipe by being connected with the connecting pipe, and the heating pipe is heated by the heat storage liquid in the heat storage space, and the heat storage liquid exchanges heat with the heating pipe, so that the heat storage liquid carries and accumulates heat. In this process, the temperature of the heat storage liquid is always greater than the temperature of the heating pipe and the fluid in the heating pipe, and the heat-insulating base, the heat-insulating surrounding shell and the heat-insulating cover are insulated, so that when the heat exchange component passes the fluid for heat exchange, the fluid can have a relatively sufficient contact area for heat exchange, so as to heat the fluid in the heat exchange component, thereby improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 The structure diagram of the utility model without the heat insulation shell Figure 1 ;

[0021] Figure 3 The structure diagram of the utility model without the heat insulation shell Figure 2 .

[0022] 1. Insulation base; 2. Insulation shell; 3. Insulation cover; 4. Inlet and outlet slots; 5. Insulation vertical pipe; 6. Inlet pipe; 7. Connecting flange; 8. Sealing flange; 9. Connecting pipe; 10. Upper flange; 11. Connecting pipe; 12. Insert pipe; 13. Insulation horizontal pipe; 14. Heat exchange spiral pipe; 15. Lower connecting pipe; 16. Heating pipe. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] A high temperature heat storage device, such as Figure 1 As shown, it includes an insulating shell 2 with open ends, and an insulating base 1 and an insulating cover 3 fixedly connected to the two ends of the insulating shell 2 and closing the two ends. The insulating cover 3 is provided with an inlet and outlet slot 4 that can be opened and closed. A heat storage space is formed between the three. The heat storage space is filled with heat storage liquid, which can be molten salt, heat transfer oil, etc. The insulating shell 2, the insulating cover 3 and the insulating base 1 are all aluminum silicate wool boards. The insulating base 1 is hollow and filled with rock wool.

[0025] like Figure 2 and 3 As shown, a heat exchange component penetrating the heat insulation cover 3 and a plurality of heating components are arranged in the heat storage space, and the heating components are arranged in the heat exchange component.

[0026] The heat-insulating cover 3 is provided with a plurality of through holes distributed in an array, and the heating assembly comprises a sealing flange 8 fixedly connected in the through hole, a heating tube 16 fixedly connected to the sealing flange 8, a connecting tube 9 fixedly connected to the sealing flange 8, an upper flange 10 fixedly connected to the upper end of the connecting tube 9, a connecting tube 11 fixedly connected to the top surface of the upper flange 10, and a plug 12 connected to the connecting tube 11, wherein the end of the plug 12 away from the connecting tube 11 can be opened and closed, and the diameter of the plug 12 is smaller than the diameter of the connecting tube 11, the connecting tube 11, the connecting tube 9, and the heating tube 16 are all connected, and the heating tube 16 is U-shaped, and an internal thread is provided on the inner peripheral wall of the upper end of the plug 12, and a sealing bolt for closing the opening of the plug 12 is threadedly connected to the internal thread.

[0027] The heat exchange assembly includes a mountain-shaped insulated horizontal tube 13, an insulated vertical tube 5 connected to the insulated horizontal tube 13, and a plurality of groups of heat exchange tubes connected to the bottom of the insulated horizontal tube 13. The heat exchange tubes include a plurality of heat exchange spiral tubes 14, and upper connecting tubes and lower connecting tubes 15 connected to adjacent heat exchange spiral tubes 14. The insulated vertical tube 5 is arranged through the insulation cover 3. The upper connecting tubes and the lower connecting tubes 15 are alternately arranged between adjacent heat exchange spiral tubes 14. The insulated vertical tube 5 is coaxially connected with an introduction tube 6. The diameter of the introduction tube 6 is smaller than the diameter of the insulated vertical tube 5. The upper end of the introduction tube 6 is fixedly connected with a connecting flange 7. The thermal conductivity of the insulated vertical tube 5 and the insulated horizontal tube 13 is the same, and the thermal conductivity of the heat exchange tube is greater than that of the insulated horizontal tube 13. The heat exchange spiral tubes 14 in each group of heat exchange tubes The number of heat exchange tubes is four, the number of lower connecting tubes 15 in each group of heat exchange tubes is two, the number of upper connecting tubes in each group of heat exchange tubes is one, the heat-insulating transverse tube 13 includes a transverse tube and three longitudinal tubes connected thereto, two heat-exchanging spiral tubes 14 are connected to two adjacent longitudinal tubes, and the remaining two heat-exchanging spiral tubes 14 are evenly spaced between the two adjacent longitudinal tubes, the two lower connecting tubes 15 are respectively connected to the lower ends of the two outermost heat-exchanging spiral tubes 14 and the two middle heat-exchanging spiral tubes 14, and the upper connecting tube is connected to the upper ends of the two middle heat-exchanging spiral tubes 14, the insert 12, the connecting tube 11, the connecting tube 9, the heat-insulating transverse tube 13 and the heat-insulating vertical tube 5 can adopt insulated oil pipes, and the heat-exchanging spiral tubes 14, the upper connecting tube, the lower connecting tube 15, and the heating tube 16 are all made of copper.

[0028] The heating tubes 16 are located between each group of heat exchange tubes, and the two are distributed in a rectangular array below the insulation cover 3 .

[0029] When the utility model is used, after loosening the sealing bolt, the upper end of the insert tube 12 is opened, the insert tube 12 is connected to the required heating pipe, and the insert tube 12 is inserted into the required heating pipe until the required heating pipe contacts the end surface of the connecting pipe 11. The required heating pipe sends the required heated fluid into the insert tube 12, passes through the connecting pipe 11 and the connecting pipe 9 in sequence, and allows the required heated fluid to enter the heating pipe 16, and the heating pipe 16 performs heat exchange with the heat storage liquid.

[0030] Since the heating tube 16 is positioned between each group of heat exchange tubes, the temperature of the hot liquid near the heating tube 16 is greater than the temperature of the heating fluid required in the heating tube 16. In this way, when the heat storage liquid near the heat exchange tube exchanges heat with the heat exchange tube, it can also fully contact the surface of the heat exchange spiral tube 14, the upper connecting tube, and the lower connecting tube 15, so that the fluid in the heat exchange tube can also be fully heated.

[0031] The insulated vertical tube 5 and the insulated horizontal tube 13 play the role of thermal insulation and heat preservation, and cooperate with the insulated base 1, the insulated surrounding shell 2, and the insulated cover 3 to insulate the heat storage liquid used to store heat after the heat exchange. When the fluid that needs to be heated passes through the insulated vertical tube 5 and the insulated horizontal tube 13 through the inlet pipe 6 and enters the heat exchange tube, the fluid can be in a space environment with heat for heat exchange, thereby ensuring its heat exchange efficiency. At the same time, in the process without fluid, heat can also be stored through the heat storage liquid.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high temperature heat accumulator, characterized in that: The invention comprises a heat-insulating shell (2) with two open ends, and a heat-insulating base (1) and a heat-insulating cover (3) fixedly connected to and sealing the two ends of the heat-insulating shell (2), wherein a heat storage space is formed between the three, and the heat storage space is filled with heat storage liquid. A heat exchange component and a plurality of heating components passing through the heat-insulating cover (3) are arranged in the heat storage space, and the heating components are arranged in the heat exchange component.

2. A high temperature heat accumulator according to claim 1, characterized in that: The thermal storage fluid is heat transfer oil.

3. A high temperature heat accumulator according to claim 1, characterized in that: The heat-insulating surrounding shell (2), the heat-insulating cover (3) and the heat-insulating base (1) are all aluminum silicate wool boards.

4. A high temperature heat accumulator according to claim 1 or 3, characterized in that: The heat-insulating base (1) is hollow and filled with rock wool.

5. A high temperature heat accumulator according to claim 1, characterized in that: The heat-insulating cover (3) is provided with a plurality of through holes distributed in an array. The heating assembly comprises a sealing flange (8) fixedly connected to the through hole, a heating pipe (16) fixedly connected to the sealing flange (8), a connecting pipe (9) fixedly connected to the sealing flange (8), an upper flange (10) fixedly connected to the upper end of the connecting pipe (9), a connecting pipe (11) fixedly connected to the top surface of the upper flange (10), and a plug pipe (12) connected to the connecting pipe (11). The end of the plug pipe (12) away from the connecting pipe (11) can be opened and closed, and the diameter of the plug pipe (12) is smaller than the diameter of the connecting pipe (11). The connecting pipe (11), the connecting pipe (9), and the heating pipe (16) are all connected.

6. A high temperature heat accumulator according to claim 5, characterized in that: The heating tube (16) is U-shaped.

7. A high temperature heat accumulator according to claim 5, characterized in that: An inner peripheral wall at the upper end of the insert tube (12) is provided with an internal thread, and a sealing bolt for sealing the opening of the insert tube (12) is threadedly connected to the internal thread.

8. A high temperature heat accumulator according to claim 1, characterized in that: The heat exchange assembly comprises a heat-insulating transverse tube (13) in a mountain shape, a heat-insulating vertical tube (5) connected to the heat-insulating transverse tube (13), and a plurality of groups of heat-exchanging tubes connected to the bottom of the heat-insulating transverse tube (13). The heat-insulating vertical tube (5) is arranged through the heat-insulating cover (3). The heat-exchanging tube comprises a plurality of heat-exchanging spiral tubes (14), and an upper connecting tube and a lower connecting tube (15) connected to adjacent heat-exchanging spiral tubes (14). The upper connecting tubes and the lower connecting tubes (15) are arranged alternately between adjacent heat-exchanging spiral tubes (14). The heat-insulating vertical tube (5) is coaxially connected to an inlet tube (6). The diameter of the inlet tube (6) is smaller than the diameter of the heat-insulating vertical tube (5). The upper end of the inlet tube (6) is fixedly connected to a connecting flange (7). The heat-insulating vertical tube (5) and the heat-insulating transverse tube (13) have the same thermal conductivity, and the thermal conductivity of the heat-exchanging tube is greater than the thermal conductivity of the heat-insulating transverse tube (13).

9. A high temperature heat accumulator according to claim 8, characterized in that: The number of the heat exchange spiral tubes (14) in each group of heat exchange tubes is four, the number of the lower connecting tubes (15) in each group of heat exchange tubes is two, and the number of the upper connecting tube in each group of heat exchange tubes is one. The heat-insulating transverse tube (13) includes a transverse tube and three longitudinal tubes connected thereto. Two of the heat exchange spiral tubes (14) are connected to two adjacent longitudinal tubes, and the remaining two heat exchange spiral tubes (14) are evenly spaced between the two adjacent longitudinal tubes. The two lower connecting tubes (15) are respectively connected to the lower ends of the two outermost heat exchange spiral tubes (14) and the two middle heat exchange spiral tubes (14), and the upper connecting tube is connected to the upper ends of the two middle heat exchange spiral tubes (14).

10. A high temperature heat accumulator according to claim 1, characterized in that: The heat-insulating cover (3) is provided with an inlet and outlet slot (4) which can be opened and closed.

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