CN215002321U - Energy storage device of photo-thermal power generation system - Google Patents
Energy storage device of photo-thermal power generation system Download PDFInfo
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- CN215002321U CN215002321U CN202121765058.7U CN202121765058U CN215002321U CN 215002321 U CN215002321 U CN 215002321U CN 202121765058 U CN202121765058 U CN 202121765058U CN 215002321 U CN215002321 U CN 215002321U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The utility model belongs to the technical field of photo-thermal power generation, and particularly discloses an energy storage device of a photo-thermal power generation system, which comprises an energy storage box, wherein the top of the energy storage box is provided with an electric heating box, and the bottom of the energy storage box is provided with a heat conduction oil circulation box; a circulating heat conduction device is arranged in the energy storage box, one end of the circulating heat conduction device is connected with one end of the electric heating box through a heat delivery pipe, and the other end of the circulating heat conduction device is connected with the other end of the electric heating box through a heat return pipe; the bottom of one end of the heat conduction chamber is connected with a heat conduction oil inlet pipe, a heat conduction oil circulating pipe is connected between the top of the other end of the heat conduction oil inlet pipe and the end part of the heat conduction oil circulating box, one end of the heat conduction oil circulating box, which is far away from the heat conduction oil circulating pipe, is connected with a heat conduction oil outlet pipe, and an oil return circulating pipe is connected between the heat conduction oil inlet pipe and the heat conduction oil outlet pipe in a branch mode. The dual cycle of potassium nitrate salt and conduction oil is formed in the energy storage box for heat conduction efficiency realizes the rapid heating up of conduction oil, has reduced the heat consumption that external transmission process leads to, and the heat conduction is effectual, guarantees the continuous electricity generation of light and heat power generation system.
Description
Technical Field
The utility model relates to a solar-thermal power generation technical field specifically is an energy storage equipment of solar-thermal power generation system.
Background
The solar photo-thermal power generation is realized by collecting solar heat energy by utilizing a large-scale array parabolic or dish-shaped mirror surface, providing steam through a heat exchange device and combining the process of a traditional turbonator. The solar photo-thermal power generation technology is adopted, so that an expensive silicon crystal photoelectric conversion process is avoided, and the cost of solar power generation can be greatly reduced. Moreover, the solar energy utilization in the form has an incomparable advantage compared with other forms of solar energy conversion, namely water heated by solar energy can be stored in a huge container, and a turbine can still be driven to generate electricity for several hours after the sun lands.
The existing photo-thermal power generation system utilizes a groove-shaped parabolic reflector to focus sunlight to a heat collecting pipe to heat conducting oil, the heat conducting oil in the heat collecting pipe is pumped and collected in a storage tank, then the heat conducting oil is input to a steam turbine to generate high-temperature steam, then the steam turbine drives a generator to generate power, and the heat conducting oil is pumped to the heat collecting pipe by a pump to be heated after being cooled. The photothermal power generation system always needs to be added with an energy storage system in order to maintain the normal operation of the system by depending on the energy stored in the heat storage system in the morning and evening or in the cloud shading gap, the existing energy storage system usually adopts heat conduction oil for energy storage, but the energy storage temperature of the heat conduction oil can only reach about 250 degrees, the energy storage efficiency is poor, and when the required temperature cannot be reached, the photothermal power generation does not work, the power cannot be continuously generated, and the power generation effect is influenced. In addition, the higher the steam temperature is, the better the power generation effect is, and the steam temperature in the prior art can not reach the ideal temperature, so the effect is poor.
In order to solve the problems, the utility model with the patent number of CN201721462142.5 discloses an energy storage device of a photo-thermal power generation system, which comprises a container filled with potassium nitrate salt and an energy storage tank, wherein an electric heater is arranged on the container, a circulating pump is connected in series between the outlet of the container and the inlet of the energy storage tank, and the outlet of the energy storage tank is connected with the inlet of the container; when the container is used, the container is placed in heat conduction oil of a photo-thermal power generation system, and is connected with an electric heater, potassium nitrate in the container is heated to over 500 ℃, and pumped into an energy storage tank through a circulating pump for circulating storage.
Although the scheme can improve the heating temperature of the heat conduction oil, the heat transfer efficiency is not high, the heat loss is large in the process of circulating conveying, and the efficient temperature rise of the heat conduction oil cannot be realized.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an energy storage equipment of light and heat power generation system to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: an energy storage device of a photo-thermal power generation system comprises an energy storage box, wherein an electric heating box is arranged at the top of the energy storage box, and a heat conduction oil circulation box is arranged at the bottom of the energy storage box; the energy storage box is internally provided with a circulating heat conduction device, an electric heating pipe is installed in the electric heating box, a heat conduction chamber is formed between the circulating heat conduction device and the inner wall of the energy storage box, one end of the circulating heat conduction device is connected with one end of the electric heating box through a heat delivery pipe, the other end of the circulating heat conduction device is connected with the other end of the electric heating box through a heat return pipe, and a first material delivery pump is installed on the heat delivery pipe; the bottom of one end of the heat conduction chamber is connected with a heat conduction oil inlet pipe, a heat conduction oil circulating pipe is connected between the top of the other end of the heat conduction chamber and the end part of the heat conduction oil circulating box, a second material conveying pump is installed on the heat conduction oil circulating pipe, one end, far away from the heat conduction oil circulating pipe, of the heat conduction oil circulating box is connected with a heat conduction oil outlet pipe, and an oil return circulating pipe is connected between the heat conduction oil inlet pipe and the heat conduction oil outlet pipe in a branching mode.
Preferably, the circulating heat conducting device comprises a plurality of heat conducting cylinders with circular cross sections, the heat conducting cylinders are arranged side by side and are installed on the inner wall of the energy storage box through a support, two adjacent heat conducting cylinders are integrally connected to form a horizontal 8-shaped structure, and a flow guide opening is reserved at the splicing position of the two adjacent heat conducting cylinders.
Preferably, the heat conducting cylinder is filled with potassium nitrate salt.
Preferably, the tail ends of the heat conduction oil inlet pipe and the heat conduction oil outlet pipe are respectively provided with a first electric control valve and a second electric control valve, and the oil return circulating pipe is provided with a third electric control valve.
Preferably, the walls of the energy storage box, the electric heating box and the heat conduction oil circulation box are all made of heat insulation materials, and the wall of the heat conduction barrel is made of heat conduction materials.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses set up the circulation heat-transfer device who is formed by the integrative concatenation of a plurality of heat conduction section of thick bamboos in the energy storage box, with the cooperation of outside electric heating box, form the cyclic heating of potassium nitrate salt, the heat conduction room that will form between circulation heat-transfer device and the energy storage box is as the circulation cavity of conduction oil, can fully contact with heat conduction section of thick bamboo surface, carry out heat-conduction, form the dual cycle of potassium nitrate salt and conduction oil in the energy storage box, accelerate heat conduction efficiency, realize the rapid heating up of conduction oil, the heat energy consumption that outside transmission process leads to has been reduced, the heat conduction is effectual, guarantee the continuous electricity generation of solar-thermal power generation system.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. an energy storage tank; 2. an electric heating box; 3. a heat conducting oil circulation box; 4. a heat conducting tube; 5. a support; 6. a flow guide port; 7. an electric heating tube; 8. a heat conducting chamber; 9. a heat transfer pipe; 10. a heat return pipe; 11. a first delivery pump; 12. a heat conducting oil inlet pipe; 13. a heat transfer oil circulating pipe; 14. a second delivery pump; 15. a heat conducting oil outlet pipe; 16. an oil return circulation pipe; 17. a first electrically controlled valve; 18. a second electrically controlled valve; 19. a third electrically controlled valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1, the present invention provides a technical solution: an energy storage device of a photo-thermal power generation system comprises an energy storage box 1, wherein an electric heating box 2 is arranged at the top of the energy storage box, and a heat conduction oil circulation box 3 is arranged at the bottom of the energy storage box; a circulating heat conduction device is arranged in the energy storage box 1, an electric heating pipe 7 is arranged in the electric heating box 2, a heat conduction chamber 8 is formed between the circulating heat conduction device and the inner wall of the energy storage box 1, one end of the circulating heat conduction device is connected with one end of the electric heating box 2 through a heat delivery pipe 9, the other end of the circulating heat conduction device is connected with the other end of the electric heating box 2 through a heat return pipe 10, and a first material conveying pump 11 is arranged on the heat delivery pipe 9; the bottom of one end of the heat conduction chamber 8 is connected with a heat conduction oil inlet pipe 12, a heat conduction oil circulation pipe 13 is connected between the top of the other end of the heat conduction oil inlet pipe and the end part of the heat conduction oil circulation box 3, a second material conveying pump 14 is installed on the heat conduction oil circulation pipe 13, one end, far away from the heat conduction oil circulation pipe 13, of the heat conduction oil circulation box 3 is connected with a heat conduction oil outlet pipe 15, and an oil return circulation pipe 16 is connected between the heat conduction oil inlet pipe 12 and the heat conduction oil outlet pipe 15 in a branch mode.
Furthermore, the circulating heat conducting device comprises a plurality of heat conducting cylinders 4 with circular cross sections, each heat conducting cylinder 4 is arranged side by side and is installed on the inner wall of the energy storage box 1 through a support 5, two adjacent heat conducting cylinders 4 are integrally connected to form a horizontal 8-shaped structure, and a flow guide opening 6 is reserved at the splicing position of the two adjacent heat conducting cylinders 4.
Further, potassium nitrate salt is filled in the heat conduction cylinder 4.
Furthermore, the tail ends of the heat conducting oil inlet pipe 12 and the heat conducting oil outlet pipe 15 are respectively provided with a first electric control valve 17 and a second electric control valve 18, and the oil return circulation pipe 16 is provided with a third electric control valve 19.
Further, the walls of the energy storage box 1, the electric heating box 2 and the heat conduction oil circulation box 3 are all made of heat insulation materials, and the wall of the heat conduction barrel 4 is made of heat conduction materials.
The working principle is as follows: sufficient potassium nitrate salt is filled in each heat conduction cylinder 4 of the circulating heat conduction device, under the pumping action of the first material conveying pump 11, the potassium nitrate salt in the circulating heat conduction device is introduced into the electric heating box 2 through the heat conveying pipe 9, and flows back into each heat conduction cylinder 4 of the circulating heat conduction device through the heat return pipe 10 after being heated by the electric heating pipe 7, so that circulating flowing heating of the potassium nitrate salt is formed.
Heat conduction oil enters a heat conduction chamber 8 formed between the energy storage box 1 and the circulating heat conduction device through a heat conduction oil inlet pipe 12 and is fully contacted with the surface of each heat conduction cylinder 4, the cylinder wall of each heat conduction cylinder 4 is made of heat conduction materials, so that the heat can be efficiently conducted, and two adjacent heat conduction cylinders 4 are integrally connected to form a horizontal 8-shaped structure, so that the contact area with the heat conduction oil is large; under the action of the second material conveying pump 14, heated heat conduction oil flows into the heat conduction oil circulation box 3 through the heat conduction oil circulation pipe 13, and at the moment, two operation modes are provided:
1. the first electric control valve 17 and the second electric control valve 18 on the heat conduction oil inlet pipe 12 and the heat conduction oil outlet pipe 15 are closed, the third electric control valve 19 on the oil return circulation pipe 16 is opened, the heat conduction oil in the heat conduction oil circulation box 3 flows back to the heat conduction chamber 8 through the oil return circulation pipe 16, the circulation heating of the heat conduction oil is formed between the heat conduction oil circulation box 3 and the heat conduction chamber 8, the double circulation of potassium nitrate salt and the heat conduction oil is formed in the energy storage box 1, the heat conduction efficiency is accelerated, the rapid temperature rise of the heat conduction oil is realized, and the heat energy consumption caused by the external transmission process is reduced;
2. the first electric control valve 17 and the second electric control valve 18 on the heat conduction oil inlet pipe 12 and the heat conduction oil outlet pipe 15 are opened, the third electric control valve 19 on the oil return circulation pipe 16 is closed, the heat conduction oil in the heat conduction oil circulation box 3 is led out through the heat conduction oil outlet pipe 15 and input into a steam turbine to generate high-temperature steam, then the steam turbine drives a generator to generate electricity, the heat conduction oil enters the heat conduction chamber 8 through the heat conduction oil inlet pipe 12 again after being cooled to be heated, the heat conduction oil is recycled, the heat conduction effect is good, and continuous electricity generation of the photo-thermal power generation system is guaranteed.
It is worth noting that: the whole device realizes control over the device through the master control button, and the device matched with the control button is common equipment, belongs to the existing mature technology, and is not repeated for the electrical connection relation and the specific circuit structure.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. An energy storage device of a photo-thermal power generation system is characterized by comprising an energy storage box (1), wherein the top of the energy storage box is provided with an electric heating box (2), and the bottom of the energy storage box is provided with a heat conduction oil circulation box (3); a circulating heat conduction device is arranged in the energy storage box (1), an electric heating pipe (7) is arranged in the electric heating box (2), a heat conduction chamber (8) is formed between the circulating heat conduction device and the inner wall of the energy storage box (1), one end of the circulating heat conduction device is connected with one end of the electric heating box (2) through a heat delivery pipe (9), the other end of the circulating heat conduction device is connected with the other end of the electric heating box (2) through a heat return pipe (10), and a first material delivery pump (11) is arranged on the heat delivery pipe (9); the heat conduction oil circulation system is characterized in that a heat conduction oil inlet pipe (12) is connected to the bottom of one end of the heat conduction chamber (8), a heat conduction oil circulation pipe (13) is connected between the top of the other end of the heat conduction oil circulation chamber and the end portion of the heat conduction oil circulation box (3), a second material conveying pump (14) is installed on the heat conduction oil circulation pipe (13), a heat conduction oil outlet pipe (15) is connected to one end, away from the heat conduction oil circulation pipe (13), of the heat conduction oil circulation box (3), and an oil return circulation pipe (16) is connected between the heat conduction oil inlet pipe (12) and the heat conduction oil outlet pipe (15) in a branching mode.
2. The energy storage device for a photothermal power generation system according to claim 1, wherein: the circulating heat conduction device comprises a plurality of heat conduction cylinders (4) with circular cross sections, wherein the heat conduction cylinders (4) are arranged side by side and are installed on the inner wall of the energy storage box (1) through supports (5), two adjacent heat conduction cylinders (4) are integrally connected to form a horizontal 8-shaped structure, and a flow guide opening (6) is reserved at the splicing position of the two adjacent heat conduction cylinders (4).
3. The energy storage device for a photothermal power generation system according to claim 2, wherein: potassium nitrate salt is filled in the heat conduction cylinder (4).
4. The energy storage device for a photothermal power generation system according to claim 1, wherein: the tail ends of the heat conduction oil inlet pipe (12) and the heat conduction oil outlet pipe (15) are respectively provided with a first electric control valve (17) and a second electric control valve (18), and the oil return circulating pipe (16) is provided with a third electric control valve (19).
5. The energy storage device for a photothermal power generation system according to claim 1, wherein: the walls of the energy storage box (1), the electric heating box (2) and the heat conduction oil circulation box (3) are all made of heat insulation materials, and the wall of the heat conduction cylinder (4) is made of heat conduction materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121765058.7U CN215002321U (en) | 2021-07-30 | 2021-07-30 | Energy storage device of photo-thermal power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121765058.7U CN215002321U (en) | 2021-07-30 | 2021-07-30 | Energy storage device of photo-thermal power generation system |
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| Publication Number | Publication Date |
|---|---|
| CN215002321U true CN215002321U (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121765058.7U Active CN215002321U (en) | 2021-07-30 | 2021-07-30 | Energy storage device of photo-thermal power generation system |
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| CN (1) | CN215002321U (en) |
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2021
- 2021-07-30 CN CN202121765058.7U patent/CN215002321U/en active Active
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