CN217462444U - Non-tracking solar medium-low temperature power generation system with heat storage function - Google Patents
Non-tracking solar medium-low temperature power generation system with heat storage function Download PDFInfo
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- CN217462444U CN217462444U CN202221100599.2U CN202221100599U CN217462444U CN 217462444 U CN217462444 U CN 217462444U CN 202221100599 U CN202221100599 U CN 202221100599U CN 217462444 U CN217462444 U CN 217462444U
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Abstract
The utility model belongs to the technical field of solar energy utilizes, in particular to take non-tracking formula solar energy medium and low temperature power generation system of heat-retaining. The technical scheme is as follows: the utility model provides a take non-tracking formula solar energy medium and low temperature power generation system of heat-retaining, includes adjustable spotlight ware integration component and heat-absorbing pipe, and adjustable spotlight ware integration component includes at least a set of compound parabolic spotlight ware, and the heat-absorbing pipe passes the focus area of the daylighting mouth of each compound parabolic spotlight ware, and the one end of heat-absorbing pipe is connected with the heat-retaining unit through first connecting line, and the other end of heat-retaining unit is connected with the other end of heat-absorbing pipe through the second connecting line. The utility model provides a take non-tracking formula solar energy medium and low temperature power generation system of heat-retaining.
Description
Technical Field
The utility model belongs to the technical field of solar energy utilizes, in particular to take non-tracking formula solar energy medium and low temperature power generation system of heat-retaining.
Background
The existing solar thermal power generation technology is mainly applied to the field of medium-high temperature utilization, high-cost and high-temperature heat storage media such as fused salt and the like are generally required to be utilized, a condenser is required to track the sun, the tracking precision requirement is high, the structure is complex, the cost is high, and the application scene is relatively limited.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model aims to provide a non-tracking solar medium and low temperature power generation system with heat storage.
The utility model discloses the technical scheme who adopts does:
the utility model provides a take non-tracking formula solar energy medium and low temperature power generation system of heat-retaining, includes adjustable spotlight ware integration subassembly and heat absorption pipe, and adjustable spotlight ware integration subassembly includes at least a set of compound parabolic spotlight ware, and the heat absorption pipe passes the focus area of the light collecting port of each compound parabolic spotlight ware, and the one end of heat absorption pipe is connected with the heat-retaining unit through first connecting line, and the other end of heat-retaining unit is connected with the other end of heat absorption pipe through the second connecting line.
The solar radiation incident to the compound parabolic condenser is reflected to the heat absorption tube through the light condensation surface, the working medium in the heat absorption tube is heated, and the solar radiation energy is converted into the heat energy of the working medium. The generated hot water is stored by the heat storage unit, so that the stability of the heat source is improved, and the problem of heat source fluctuation caused by solar fluctuation is solved.
The compound parabolic condenser is a non-imaging condenser based on the edge ray principle, has a certain receiving half angle and low tracking precision requirement, can be fixedly installed during use, can simplify the structure and save the cost.
As the utility model discloses an optimal scheme, spotlight ware integration subassembly with adjustable includes the support, and the one end of support is connected with the spotlight ware casing, and compound parabolic spotlight ware sets up on the spotlight ware casing, and the other end of support is provided with the engaging lug of a plurality of high differences, and the other end of spotlight ware casing is through being connected with one of them engaging lug. The support is provided with a plurality of connecting lugs, so that the inclination angle of the concentrator in the north-south direction can be adjusted by changing the connecting position of one end of the concentrator shell on the support, and the condition that the optical efficiency is reduced when the sun track deviates from the normal line of the concentrating port greatly is avoided.
As the utility model discloses an optimal scheme, condenser casing reduces the heat dissipation loss except that the regional cladding heat preservation of sensitive surface, promotes spotlight efficiency.
As the preferred scheme of the utility model, the daylight opening of compound parabolic concentrator is arranged along east-west direction. A plurality of independent compound parabolic concentrators are arranged in parallel, and heat absorption pipes sequentially penetrate through the compound parabolic concentrators and are arranged in series. Because the compound parabolic condenser has a certain receiving angle, the requirement on the precision of tracking the sun is low, and the light collecting opening of the compound parabolic condenser can be arranged along the east-west direction according to the rule of the track of the sun from the west to the east in one year. The light collecting port of the compound parabolic condenser faces the sun, if the site is in a northern latitude area, the opening inclines to the south, otherwise, the site is in a southern latitude area, and the opening inclines to the north.
As the utility model discloses a preferred scheme, the daylighting mouth top cover of compound parabolic concentrator has the apron, forms sealed chamber, and the sealed intracavity evacuation or the pressurization force are less than 10 mbar's air or inert gas to reduce the heat loss that inside gas convection caused.
As the preferable scheme of the utility model, the heat absorption pipe is a vacuum heat absorption pipe or a metal heat absorption pipe of which the outer surface is coated with a heat absorption coating. The heat absorption pipe can use a vacuum heat absorption pipe or a metal heat absorption pipe or other heat absorption pipes with the same function as required, and the metal heat absorption pipe adopts a thin-walled pipe the outer surface of which is coated with a heat absorption coating so as to increase the absorption rate.
As the utility model discloses a preferred scheme, the heat-retaining unit is heat storage tank, is connected with the evaporimeter on the second connecting line, still connects organic working medium pipeline on the evaporimeter, is connected with the screw rod expander on the organic working medium pipeline. Solar radiation incident to the compound parabolic condenser is reflected to the heat absorption pipe through the light condensation surface, working media in the heat absorption pipe are heated, solar radiation energy is converted into heat energy of the working media, the heat energy is exchanged with organic working media in the evaporator and converted into heat energy of the organic working media, and then the heat energy of the organic working media is converted into electric energy through the expansion screw machine.
As the preferred proposal of the utility model, the organic working medium pipeline is also connected with a condenser. The condenser cools the temperature and pressure parameters of the organic working medium to the requirement of the evaporator inlet.
As the preferred scheme of the utility model, the heat-retaining unit can be heat storage tank, also can be geothermol power device. The medium-low temperature hot water produced by the non-tracking condenser can be used for storing energy in a mode of arranging a water storage tank, and can also be used for coupling energy storage application of the medium-low temperature hot water and geothermal heat, such as supplementing geothermal loss, entering and exiting heat storage or increasing geothermal temperature for heat storage.
The utility model has the advantages that:
the utility model discloses a compound parabolic concentrator passes through the condensing surface with solar radiation and reflects to the heat-absorbing pipe on, and the heat-absorbing intraductal working medium of heating is converted solar radiation energy into the heat energy of working medium. The generated hot water is stored by the heat storage unit, so that the stability of the heat source is improved, and the problem of heat source fluctuation caused by solar fluctuation is solved. . The compound parabolic condenser is a non-imaging condenser based on the edge ray principle, has a certain receiving half angle and low tracking precision requirement, can be fixedly installed during use, can simplify the structure and save the cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the concentrator integrated assembly.
In the figure: 1-an adjustable concentrator integration component; 2-a heat absorption tube; 3-a heat storage unit; 4-a second connecting line; 5-an evaporator; 6-organic working medium pipeline; 7-screw expander; 8-a condenser; 9-a first connecting line; 11-compound parabolic concentrator; 12-a scaffold; 13-a concentrator housing; 14-connecting lugs; 15-insulating layer; 16-cover plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
Example 1:
as shown in fig. 1 and fig. 2, the non-tracking solar medium-low temperature power generation system with heat storage of the embodiment includes an adjustable concentrator integrated component 1 and a heat absorption tube 2, the adjustable concentrator integrated component 1 includes at least one group of compound parabolic concentrators 11, the heat absorption tube 2 penetrates through a focus area of a lighting port of each compound parabolic concentrator 11, one end of the heat absorption tube 2 is connected with a heat storage unit 3 through a first connecting pipeline 9, the heat storage unit 3 is a heat storage tank, and the other end of the heat storage tank is connected with the other end of the heat absorption tube 2 through a second connecting pipeline 4. The second connecting pipeline 4 is connected with a pump and a valve.
The second connecting pipeline 4 is connected with an evaporator 5, the evaporator 5 is also connected with an organic working medium pipeline 6, and the organic working medium pipeline 6 is connected with a screw expander 7 and a condenser 8. The solar radiation incident to the compound parabolic condenser 11 is reflected to the heat absorption tube 2 through the condensing surface, the working medium in the heat absorption tube 2 is heated, the solar radiation energy is converted into the heat energy of the working medium, the heat is exchanged with the organic working medium in the evaporator 5 to be converted into the heat energy of the organic working medium, and then the heat energy of the organic working medium is converted into electric energy through the expansion screw machine. The condenser 8 cools the temperature and pressure parameters of the organic working medium to the requirement of the inlet of the evaporator 5.
The solar radiation incident to the compound parabolic condenser 11 is reflected to the heat absorption tube 2 in the compound parabolic condenser 11 through the condensing surface, the working medium in the heat absorption tube 2 is heated, the solar radiation energy is converted into the heat energy of the working medium, the heat is exchanged with the organic working medium to be converted into the heat energy of the organic working medium, and then the heat energy of the organic working medium is converted into electric energy through the expansion screw machine. The generated hot water is stored through the heat storage unit 3, so that the stability of a heat source is improved, and the problem of heat source fluctuation caused by solar fluctuation is solved.
The compound parabolic condenser 11 is a non-imaging condenser based on the edge ray principle, has a certain receiving half angle and low tracking precision requirement, can be fixedly installed during use, can simplify the structure and save the cost.
Specifically, as shown in fig. 2, the adjustable concentrator integrated assembly 1 includes a support 12, one end of the support 12 is connected to a concentrator housing 13, the compound parabolic concentrator 11 is disposed on the concentrator housing 13, the other end of the support 12 is provided with a plurality of connection lugs 14 with different heights, and the other end of the concentrator housing 13 is connected to one of the connection lugs 14.
Since the sun trajectory changes within a certain angular range during the year, although the change is not so great, the concentrator can collect solar energy by fixing the inclination angle determined by the latitude all the time during the year. On some days, however, the solar trajectory deviates more from the normal to the light-gathering mouth, and the optical efficiency decreases. Therefore, considering that the adjustable bracket 12 is used to set several representative tilt angles within the range of the change of the sun track, the embodiment is only schematically provided with the engaging lugs 14 corresponding to three tilt angles, and the corresponding tilt angles can be adjusted periodically according to the change of the sun track in one year. The bracket 12 is provided with a plurality of connecting lugs 14, so that the inclination angle of the concentrator shell 13 in the north-south direction can be adjusted by changing the connecting position of one end of the concentrator shell on the bracket 12, and the situation that the optical efficiency is reduced when the sun track deviates from the normal line of the concentrating port greatly is avoided.
Furthermore, the region of the condenser shell 13 except the light receiving surface is coated with the insulating layer 15, so that the heat dissipation loss is reduced, and the light condensing efficiency is improved.
Wherein the light collecting ports of the compound parabolic concentrators 11 are arranged in the east-west direction. A plurality of independent compound parabolic concentrators 11 are arranged in parallel, and the heat absorption pipes 2 sequentially penetrate through the compound parabolic concentrators 11 and are arranged in series. The change of the position of the sun in a year has a certain rule and can be followed according to the geographical position of the site. And (5) counting the track of the sun from the west to the east every day and finding out a change rule. The compound parabolic condenser has a certain receiving angle, so that the sun tracking precision requirement is low, the compound parabolic condenser can be arranged in a fixed mode, the light collecting port of the condenser faces the sun, if the site is in a northern latitude area, the opening inclines towards the south, otherwise, the site is in a southern latitude area, and the opening inclines towards the north. The inclination angle is determined according to the latitude.
Furthermore, a cover plate 16 covers the upper part of the lighting port of the compound parabolic concentrator 11 to form a sealed cavity. The upper part of the daylight opening of the compound parabolic condenser 11 is hermetically covered by a cover plate 16 with high light transmittance, and the inside of the sealed cavity is vacuumized or filled with air or inert gas (such as krypton) with the pressure lower than 10mbar so as to reduce the heat loss caused by the convection of the internal gas.
Specifically, the heat absorbing pipe 2 may be a vacuum heat absorbing pipe 2 or a metal heat absorbing pipe 2 or other heat absorbing pipes 2 with the same function as required, and the metal heat absorbing pipe 2 is a thin-walled pipe with a heat absorbing coating coated on the outer surface thereof to increase the absorption rate.
Example 2:
the embodiment is an application in the non-power generation field, and the non-tracking solar medium-low temperature power generation system with heat storage of the embodiment comprises an adjustable condenser integrated assembly 1 and a heat absorption pipe 2, wherein the adjustable condenser integrated assembly 1 comprises at least one group of compound parabolic condensers 11, the heat absorption pipe 2 penetrates through a focus area of a lighting port of each compound parabolic condenser 11, one end of the heat absorption pipe 2 is connected with a heat storage unit 3 through a first connecting pipeline 9, and the other end of the heat storage unit 3 is connected with the other end of the heat absorption pipe 2 through a second connecting pipeline 4. The second connecting pipeline 4 is connected with a pump and a valve.
Wherein the heat storage unit 3 is a geothermal device. The medium-low temperature hot water produced by the non-tracking condenser can be used for storing energy in a mode of arranging a water storage tank, and can also be used for coupling energy storage application of the medium-low temperature hot water and geothermal heat, such as supplementing geothermal loss, entering and exiting heat storage or increasing geothermal temperature for heat storage.
The utility model discloses mainly to the low temperature power generation technology in the solar energy, provide a need not the low temperature power generation system in solar energy of tracking. The utility model discloses a spotlight ware need not to trail, simple structure, and is with low costs, and the heat-retaining medium can be water, and storage temperature is not high, and produced heat quantity except the electricity generation, still can provide cold and hot source towards heat energy, cold energy demand end, but the wide application in the field of low temperature steam/heat energy in a plurality of needs such as heat supply (industry, agriculture, resident), viscous crude exploitation, refrigeration. The medium-low temperature hot water produced by the non-tracking condenser can be used for storing energy in a mode of arranging a water storage tank, and can also be used for coupling energy storage application of the medium-low temperature hot water and geothermal heat, such as supplementing geothermal loss, entering and exiting heat storage or increasing geothermal temperature for heat storage.
The utility model discloses a heat-retaining mode can be independent energy memory, also can carry out the coupling energy storage with geothermol power, compares with current solar power generation technology (like slot type, tower, fei nieer formula), is applicable to well low temperature power generation field, extends power generation technical field with compound parabolic concentrator 11, need not to trail, simple structure, and is with low costs, and the range of application is wider. Compared with other solar energy medium and low temperature utilization technologies in the field of non-power generation, the heat storage system is arranged, so that the stability of a heat source is improved, and the problem of heat source fluctuation caused by solar fluctuation is solved.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (9)
1. The utility model provides a take non-tracking formula solar energy medium and low temperature power generation system of heat-retaining which characterized in that: the adjustable solar heat collector comprises an adjustable solar heat collector integrated assembly (1) and a heat absorption pipe (2), wherein the adjustable solar heat collector integrated assembly (1) comprises at least one group of compound parabolic condensers (11), the heat absorption pipe (2) penetrates through a focus area of a light collecting port of each compound parabolic condenser (11), one end of the heat absorption pipe (2) is connected with a heat storage unit (3) through a first connecting pipeline (9), and the other end of the heat storage unit (3) is connected with the other end of the heat absorption pipe (2) through a second connecting pipeline (4).
2. The non-tracking solar medium and low temperature power generation system with heat storage function of claim 1, wherein: the adjustable condenser integrated assembly (1) comprises a support (12), one end of the support (12) is connected with a condenser shell (13), the compound parabolic condenser (11) is arranged on the condenser shell (13), a plurality of connecting lugs (14) with different heights are arranged at the other end of the support (12), and the other end of the condenser shell (13) is connected with one of the connecting lugs (14).
3. The non-tracking solar medium and low temperature power generation system with heat storage function of claim 2, wherein: the region of the condenser housing (13) other than the light receiving surface is covered with an insulating layer (15).
4. The non-tracking solar medium and low temperature power generation system with heat storage function of claim 1, wherein: the light collecting opening of the compound parabolic condenser (11) is arranged along the east-west direction.
5. The non-tracking solar medium and low temperature power generation system with heat storage function of claim 1, wherein: and a cover plate (16) covers the upper part of a lighting port of the compound parabolic condenser (11) to form a sealed cavity, and air or inert gas with the vacuumizing or pressurizing pressure lower than 10mbar is pumped in the sealed cavity.
6. The non-tracking solar medium and low temperature power generation system with heat storage function of claim 1, wherein: the heat absorption tube (2) is a vacuum heat absorption tube (2) or a metal heat absorption tube (2) with a heat absorption coating coated on the outer surface.
7. The non-tracking solar medium and low temperature power generation system with heat storage function of claim 1, wherein: the heat storage unit (3) is a heat storage tank, the second connecting pipeline (4) is connected with an evaporator (5), the evaporator (5) is further connected with an organic working medium pipeline (6), and the organic working medium pipeline (6) is connected with a screw expander (7).
8. The non-tracking solar energy medium and low temperature power generation system with heat storage function as claimed in claim 7, wherein: and the organic working medium pipeline (6) is also connected with a condenser (8).
9. The non-tracking solar medium and low temperature power generation system with heat storage function of claim 1, characterized in that: the heat storage unit (3) is a geothermal device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221100599.2U CN217462444U (en) | 2022-05-09 | 2022-05-09 | Non-tracking solar medium-low temperature power generation system with heat storage function |
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| CN202221100599.2U CN217462444U (en) | 2022-05-09 | 2022-05-09 | Non-tracking solar medium-low temperature power generation system with heat storage function |
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