CN219015077U - Dual-phase energy storage structure for off-peak electricity energy storage and tube bundle type energy storage device - Google Patents
Dual-phase energy storage structure for off-peak electricity energy storage and tube bundle type energy storage device Download PDFInfo
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- CN219015077U CN219015077U CN202320059339.3U CN202320059339U CN219015077U CN 219015077 U CN219015077 U CN 219015077U CN 202320059339 U CN202320059339 U CN 202320059339U CN 219015077 U CN219015077 U CN 219015077U
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Abstract
The utility model discloses a double-phase energy storage structure and a tube bundle type energy storage device for storing energy of off-peak electricity, wherein the double-phase energy storage structure comprises a solid heat storage unit and a borate heat storage unit, the borate heat storage unit is packaged in an inner space of the solid heat storage unit, the solid heat storage unit is used as a storage unit of the borate heat storage unit and a sensible heat storage piece for heating up and storing electric energy during off-peak electricity, and the borate heat storage unit is used for heating up and storing electric energy after electric heating during off-peak electricity. The technical scheme provided by the utility model aims to solve the problem that after heat storage and phase transformation of a phase-change material in the prior art, the requirement on equipment for storing the phase-change material is high.
Description
Technical Field
The utility model relates to the field of off-peak electricity energy storage utilization, in particular to a biphase energy storage structure for off-peak electricity energy storage and a tube bundle type energy storage device.
Background
In recent years, with the rapid development of economy in China, the living standard of people is greatly improved, the energy consumed by heat supply is gradually increased year by year, the peak electricity valley electricity consumption gap is gradually increased, the problem that the power grid is overlarge in power load during peak electricity is increasingly highlighted, in order to solve the problem, the energy storage and supply technology needs to be developed, the valley electricity energy storage and supply system for storing energy by using a solid heat exchange medium can convert valley electricity energy at night or in an idle period into heat energy to be stored, heat is supplied to a heat utilization unit during peak electricity, the energy utilization during the valley electricity period can be improved to a great extent, the pressure of the power grid during the peak electricity period is reduced, and the energy waste is reduced.
In the prior art, the energy storage and energy supply of valley electricity usually adopts a phase change material, and after the phase change material stores heat and changes phase, the requirement on equipment for storing the phase change material is high; for example, water is used as a phase change energy storage material, and after the water is evaporated into water vapor, the water needs to be stored by a large pressure container, so that the requirement on storage equipment is high. Therefore, it is necessary to provide a dual-phase energy storage structure and a tube-bundle energy storage device for storing energy in low-voltage electricity, so as to solve the problem that the heat storage material is phase-changed, which results in high requirement on storage equipment.
Disclosure of Invention
The utility model mainly aims to provide a dual-phase energy storage structure for off-peak electricity energy storage and a tube bundle type energy storage device, and aims to solve the problem that in the prior art, after heat storage and phase change, a phase change material has high requirements on equipment for storing the phase change material.
In order to achieve the above object, the present utility model provides a dual-phase energy storage structure for storing energy in low-peak electricity, comprising a solid heat storage unit and a borate heat storage unit, wherein the borate heat storage unit is encapsulated in an inner space of the solid heat storage unit, the solid heat storage unit is used as a storage unit of the borate heat storage unit and a sensible heat storage member for heating up and storing electric energy during the peak electricity, the borate heat storage unit is used for heating up and storing electric energy during the peak electricity, the solid heat storage unit is a tubular structural member, two ends of the tubular structural member are closed, and an inner space for accommodating the borate heat storage unit is formed in the middle.
Preferably, the solid heat storage unit is a magnesium oxide structural member.
Preferably, the borate is one of sodium borate, magnesium borate or manganese borate.
In order to achieve the above object, the present utility model further provides a tube bundle type energy storage device, which comprises a ventilation module, a dual-phase energy storage structure and an electric heating module, wherein the dual-phase energy storage structure is contained in a heat storage chamber, one end of the ventilation module is connected with the outside, the other end of the ventilation module is communicated with the inner space of the heat storage chamber, the electric heating module is used for being connected with an external power supply to heat the dual-phase energy storage structure during valley electricity, and the ventilation module is used for introducing air into the heat storage chamber during heat supply to take away heat stored by the dual-phase energy storage structure.
Preferably, a plurality of dual-phase energy storage structures are arranged in the heat storage chamber, a plurality of the dual-phase energy storage structures are stacked layer by layer to form a heat storage module, and the outer walls of the dual-phase energy storage structures are in contact with each other to form an air flow passage.
Preferably, the tube bundle type energy storage device further comprises a heat exchanger, one end of the heat exchanger is communicated with the inner space of the regenerator, and the other end of the heat exchanger is used for being communicated with a user pipe network.
Preferably, one end of the air flow channel is communicated with the ventilation module, the other end of the air flow channel is communicated with the heat exchanger, and the air flow channel is used for circulating air along the length direction of the dual-phase energy storage structure so as to absorb and take away heat stored by the dual-phase energy storage structure.
Preferably, the electric heating modules are circumferentially arranged along the inner wall of the regenerator and are arranged outside the dual-phase energy storage structure.
Preferably, an insulating layer is arranged in the heat storage chamber, the insulating layer surrounds the inner wall of the heat storage chamber, and an opening is formed in the insulating layer and used for enabling the heat exchange module and the ventilation module to be communicated with the heat storage chamber.
In summary, in the technical scheme of the utility model, a solid heat storage unit and a borate heat storage unit are arranged, the borate heat storage unit is packaged in the internal space of the solid heat storage unit, and the solid heat storage unit is used as a sensible heat storage unit and also used as a storage unit of the borate heat storage unit; the borate heat storage unit is packaged in the internal space of the solid heat storage unit, and is still sealed in the solid heat storage unit when in phase change, so that the problem that the heat storage material is high in requirement on storage equipment due to phase change is solved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a tube bundle energy storage device according to the present utility model;
FIG. 2 is a schematic view of the internal structure of a regenerator of a tube bundle energy storage device according to the present utility model;
fig. 3 is an exploded view of a dual phase energy storage structure of the present utility model.
Reference numerals illustrate:
1-a dual phase energy storage structure; 2-a regenerator; 3-an air flow passage; 4, an insulating layer; 5 a ventilation module; 6-an electrical heating element; 7-a heat storage module; 11-a solid heat storage unit; 12-borate heat storage unit.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.
The utility model provides a biphase energy storage structure for off-peak electricity energy storage and a tube bundle type energy storage device.
Referring to fig. 1 to 3, the dual-phase energy storage structure for storing energy in low-peak electricity according to the present utility model includes a solid heat storage unit 11 and a borate heat storage unit 12, wherein the borate heat storage unit 12 is encapsulated in an inner space of the solid heat storage unit 11, the solid heat storage unit 11 is used as a storage unit of the borate heat storage unit 12 and a sensible heat storage member for heating up and storing electric energy during the low-peak electricity, the borate heat storage unit 12 is used for heating up and storing electric energy during the low-peak electricity, the solid heat storage unit 11 is a tubular structure, two ends of the tubular structure are closed, and an inner space for accommodating the borate heat storage unit 12 is formed in the middle. Specifically, the solid heat storage unit 11 may be an integral structure, and the borate heat storage unit 12 is filled in the integral structure.
In summary, in the technical solution of the present utility model, a solid heat storage unit 11 and a borate heat storage unit 12 are provided, the borate heat storage unit 12 is encapsulated in the internal space of the solid heat storage unit 11, and the solid heat storage unit 11 is used as a sensible heat storage unit and also as a storage unit of the borate heat storage unit 12; by packaging the borate heat storage unit 12 in the internal space of the solid heat storage unit 11, the borate heat storage unit 12 is still sealed in the solid heat storage unit 11 during phase change, and the problem that the requirement on storage equipment is high due to the phase change of the heat storage material is solved.
Referring to fig. 3, in this embodiment, the solid heat storage unit 11 is a circular tube, and after the borate is installed in the circular tube, two ends of the circular tube are sealed by welding; of course, the shape and the closing manner of the solid heat storage unit 11 are not limited thereto, and may be adjusted as needed by those skilled in the art.
Preferably, the solid heat storage unit 11 is a magnesium oxide structural member. In the technical scheme of the utility model, the solid heat storage unit 11 adopts magnesium oxide with the purity of 92%, and the load softening starting temperature is 1520-1600 ℃, so that the solid heat storage unit 11 can be heated to 1000 ℃ for energy storage.
Preferably, the borate is one of sodium borate, magnesium borate or manganese borate. The melting points of the sodium borate, the magnesium borate or the manganese borate are all over 700 ℃, the sodium borate, the magnesium borate or the manganese borate can be heated to a higher temperature to store heat, the boiling points of the sodium borate, the magnesium borate or the manganese borate are all over 1400 ℃, and the temperature is higher than the working heating temperature of the dual-phase energy storage structure, so that the borate is prevented from being evaporated or decomposed into gas in the heating process, and the pressure of the internal space of the solid heat storage unit 11 is prevented from being overlarge.
Preferably, the tube bundle energy storage device comprises a ventilation module 5, a dual-phase energy storage structure 1 and an electric heating module 6, wherein the dual-phase energy storage structure 1 is contained in a regenerator 2, one end of the ventilation module 5 is connected with the outside, the other end of the ventilation module is communicated with the inner space of the regenerator 2, the electric heating module 6 is used for being connected with an external power supply to heat the dual-phase energy storage structure 1 during valley electricity, and the ventilation module 5 is used for introducing air into the regenerator 2 during heat supply to take away heat stored by the dual-phase energy storage structure 1. In this embodiment, the ventilation module 5 is a fan and a ventilation pipe, and the fan introduces external air into the regenerator 2 through the ventilation pipe.
Preferably, a plurality of dual-phase energy storage structures 1 are arranged in the regenerator 2, a plurality of the dual-phase energy storage structures 1 are stacked layer by layer to form a heat storage module 7, and the outer walls of the dual-phase energy storage structures 1 are in contact with each other to form an air flow channel 3. In this embodiment, the dual-phase energy storage structures 1 are arranged transversely, and the outer walls of 4 dual-phase energy storage structures 1 are contacted with each other to form an air flow path 3; the heat storage modules 7 are formed by surrounding the reinforcing components after the two-phase energy storage structures 1 are stacked layer by layer; the heat storage module 7 is supported in the inner space of the heat storage chamber 2 through a support frame.
Preferably, the tube-bundle energy storage device further comprises a heat exchanger (not shown in the figure), one end of the heat exchanger is communicated with the inner space of the regenerator 2, and the other end of the heat exchanger is used for being communicated with a user pipe network. In this embodiment, the heat exchanger uses water as a heat exchange medium, the air introduced by the ventilation module 5 takes away the heat stored in the dual-phase energy storage structure 1 to form hot air, the hot air is introduced into the heat exchanger, and the heat exchange medium in the heat exchanger is heated by the hot air to form steam and then is sent into a user pipe network.
Preferably, one end of the air channel 3 is communicated with the ventilation module 5, and the other end is communicated with the heat exchange module, and the air channel 3 is used for circulating air along the length direction of the dual-phase energy storage structure 1 so as to absorb and take away the heat stored by the dual-phase energy storage structure 1. The shape of the air flow channel 3 is determined by the shape of the double-phase energy storage structure 1, a plurality of air flow channels 3 are formed among the double-phase energy storage structures 1, the middle parts of the air flow channels 3 are mutually isolated, and the openings at the two ends of the air flow channels 3 are mutually communicated.
Preferably, the electric heating modules 6 are circumferentially arranged along the inner wall of the regenerator 2, outside the dual-phase energy storage structure 1. In this embodiment, the electric heating module 6 adopts a graphite heating tube, and the graphite heating tube is disposed in a space formed by surrounding the heat insulation layer 4, and a gap is formed between the graphite heating tube and the heat insulation layer 4 and the heat storage module 7.
Preferably, an insulating layer 4 is arranged in the regenerator 2, the insulating layer 4 surrounds the inner wall of the regenerator 2, and the insulating layer 4 is provided with an opening for communicating the heat exchange module and the ventilation module 5 with the regenerator 2. In this embodiment, a gap is formed between the heat-insulating layer 4 and the inner wall of the regenerator 2.
The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather utilizing equivalent structural changes made in the present utility model description and drawings or directly/indirectly applied to other related technical fields are included in the scope of the present utility model.
Claims (9)
1. The double-phase energy storage structure for storing energy in off-peak electricity is characterized by comprising a solid heat storage unit and a borate heat storage unit, wherein the borate heat storage unit is packaged in an inner space of the solid heat storage unit, the solid heat storage unit is used as a storage unit of the borate heat storage unit and a sensible heat storage piece for heating and storing electric energy during off-peak electricity, the borate heat storage unit is used for heating and storing electric energy during off-peak electricity, the solid heat storage unit is a tubular structural member, two ends of the tubular structural member are closed, and an inner space for accommodating the borate heat storage unit is formed in the middle of the tubular structural member.
2. The dual-phase energy storage structure for off-peak electrical energy storage of claim 1, wherein the solid heat storage unit is a magnesium oxide structure.
3. A biphasic energy storage structure for off-peak electrical energy storage according to claim 1 or 2, wherein the borate is one of sodium borate, magnesium borate or manganese borate.
4. A tube bundle energy storage device, comprising a ventilation module, a dual-phase energy storage structure as claimed in any one of claims 1 to 3 and an electric heating module, wherein one end of the ventilation module is connected with the outside, the other end of the ventilation module is communicated with the inner space of the regenerator, the electric heating module is used for being connected with an external power supply to heat the dual-phase energy storage structure during valley electricity, and the ventilation module is used for introducing air into the regenerator during heat supply to take away heat stored by the dual-phase energy storage structure.
5. The tube bundle type energy storage device according to claim 4, wherein a plurality of dual-phase energy storage structures are arranged in the heat storage chamber, the dual-phase energy storage structures are stacked layer by layer to form a heat storage module, and outer walls of the dual-phase energy storage structures are contacted with each other to form an air flow channel.
6. The tube bundle energy storage device according to claim 5, further comprising a heat exchanger, wherein one end of the heat exchanger is in communication with the regenerator interior space and the other end is in communication with a customer network.
7. The tube bundle energy storage device according to claim 6, wherein the air flow passage is connected to the ventilation module at one end and the heat exchanger at the other end, and is configured to circulate air along the length of the dual-phase energy storage structure to absorb and remove heat stored in the dual-phase energy storage structure.
8. The tube bundle energy storage device according to claim 4, wherein the electrical heating modules are circumferentially arranged along the regenerator inner wall, outside the dual phase energy storage structure.
9. The tube bundle energy storage device according to claim 7, wherein an insulating layer is provided in the heat storage chamber, the insulating layer surrounding the inner wall of the heat storage chamber, the insulating layer being provided with openings for allowing the heat exchanger and ventilation module to communicate with the heat storage chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320059339.3U CN219015077U (en) | 2023-01-09 | 2023-01-09 | Dual-phase energy storage structure for off-peak electricity energy storage and tube bundle type energy storage device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320059339.3U CN219015077U (en) | 2023-01-09 | 2023-01-09 | Dual-phase energy storage structure for off-peak electricity energy storage and tube bundle type energy storage device |
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| CN219015077U true CN219015077U (en) | 2023-05-12 |
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| CN202320059339.3U Active CN219015077U (en) | 2023-01-09 | 2023-01-09 | Dual-phase energy storage structure for off-peak electricity energy storage and tube bundle type energy storage device |
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| CN (1) | CN219015077U (en) |
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- 2023-01-09 CN CN202320059339.3U patent/CN219015077U/en active Active
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