CN116086027A - Photovoltaic photo-thermal integrated power generation device with adjustable - Google Patents
Photovoltaic photo-thermal integrated power generation device with adjustable Download PDFInfo
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- CN116086027A CN116086027A CN202310376468.XA CN202310376468A CN116086027A CN 116086027 A CN116086027 A CN 116086027A CN 202310376468 A CN202310376468 A CN 202310376468A CN 116086027 A CN116086027 A CN 116086027A
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- 238000010248 power generation Methods 0.000 title claims abstract description 55
- 150000003839 salts Chemical class 0.000 claims abstract description 54
- 238000004804 winding Methods 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 abstract description 18
- 238000005286 illumination Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S30/00—Arrangements for moving or orienting solar heat collector modules
- F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
- F24S30/42—Arrangements for moving or orienting solar heat collector modules for rotary movement with only one rotation axis
- F24S30/425—Horizontal axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/50—Solar heat collectors using working fluids the working fluids being conveyed between plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/44—Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S2020/10—Solar modules layout; Modular arrangements
- F24S2020/17—Arrangements of solar thermal modules combined with solar PV modules
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S30/00—Arrangements for moving or orienting solar heat collector modules
- F24S2030/10—Special components
- F24S2030/11—Driving means
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Abstract
The invention relates to solar power generation, and provides an adjustable photovoltaic photo-thermal integrated power generation device which comprises a pair of oppositely arranged brackets, a molten salt pipe, a pair of support plates, a plurality of photo-thermal plates fixedly arranged between the pair of support plates, a plurality of photovoltaic plates slidingly arranged between the pair of support plates and a driving device, wherein the molten salt pipe is arranged at the upper ends of the pair of brackets; the support plate is rotatably connected with the upper end of the bracket; the fused salt tube axis is used as a focus by the plurality of photothermal plates; the photovoltaic panels are arranged on the lower surfaces of the photo-thermal plates; a photo-thermal gap for the photovoltaic panel to pass through is arranged between two adjacent photo-thermal plates, and one photo-thermal gap is used for the photovoltaic panel to pass through; one of the photovoltaic panels is used for shielding one of the photo-thermal panels. The adjustable photovoltaic and photo-thermal integrated power generation device can fully combine photovoltaic power generation and photo-thermal energy storage, and effectively utilizes solar energy.
Description
Technical Field
The invention relates to the technical field of solar power generation, in particular to an adjustable photovoltaic and photo-thermal integrated power generation device.
Background
Compared with the conventional energy, the solar energy is widely distributed, inexhaustible, and environmental pollution caused by burning fossil fuel can not occur. Solar energy has more advantages in remote mountain areas, deserts, islands and the like. The development of solar power generation technology has great significance for relieving the world energy crisis and environmental problems.
Common solar power generation technologies include photovoltaic power generation and photo-thermal power generation; the photovoltaic power generation directly generates power by using a photovoltaic panel, and the generated power is directly used or part of the generated power is temporarily stored in a storage battery. The photo-thermal power generation can also be called molten salt heat exchange, sunlight is mainly reflected into a container filled with molten salt by using a reflecting plate, the molten salt is heated, and when the molten salt needs to be used, the power is generated through high-temperature molten salt, and the solar heat energy is mainly used for heat storage-power generation. The fused salt heat exchange comprises a tower type and a groove type, wherein a large number of reflecting plates are paved on the ground, sunlight is reflected into the high fused salt tower, and then the fused salt is heated. The trough is a pipeline filled with molten salt arranged at the focus of the parabolic reflector, and sunlight is reflected to the molten salt pipe through the reflector so as to heat the molten salt.
At present, the photovoltaic power generation and the photo-thermal power generation are basically independent, and even if the photovoltaic power generation and the photo-thermal power generation are mixed for use, the photovoltaic panel and the photo-thermal panel are paved on the ground at the same time, and the photovoltaic panel and the photo-thermal panel are not organically combined. The independent molten salt heat exchange power generation process can generate power through molten salt heating and molten salt heat exchange process, wherein certain energy loss is caused, and particularly in the molten salt storage process, a large amount of molten salt is stored to lose a large amount of heat energy in a certain time. The single photovoltaic power generation cannot effectively store all the inexhaustible electric energy, because the cost of the battery is too high. The authorization number CN106014889B discloses a tower type solar photo-thermal and photovoltaic combined power generation system, which realizes the common utilization of the photovoltaic and the photo-thermal mainly by paving a photovoltaic panel with a light transmission function on a reflecting plate. Although the device can fully utilize solar energy to a certain extent, after the device is arranged, the duty ratio of photovoltaic power and photo-thermal power is difficult to adjust according to specific conditions, and the sunlight intensity has great difference in every time and every season in the daytime.
In conclusion, the device which can not only efficiently combine photovoltaic power generation and photo-thermal energy storage and can adjust according to light intensity is designed, and the utilization rate of solar energy can be improved to a certain extent.
Disclosure of Invention
The invention aims to provide an adjustable photovoltaic photo-thermal integrated power generation device which can fully combine photovoltaic power generation and photo-thermal energy storage and effectively utilize solar energy.
The embodiment of the invention is realized by the following technical scheme: the invention discloses an adjustable photovoltaic photo-thermal integrated power generation device, which comprises a pair of oppositely arranged brackets, a molten salt pipe, a pair of support plates, a plurality of photo-thermal plates fixedly arranged between the pair of support plates, a plurality of photovoltaic plates slidingly arranged between the pair of support plates and a driving device, wherein the molten salt pipe is arranged at the upper ends of the pair of brackets; the support plate is rotatably connected with the upper end of the bracket; the fused salt tube axis is used as a focus by the plurality of photothermal plates; the photovoltaic panels are arranged on the lower surfaces of the photo-thermal plates; a photo-thermal gap for the photovoltaic panel to pass through is arranged between two adjacent photo-thermal plates, and one photo-thermal gap is used for the photovoltaic panel to pass through; the driving device is used for driving the supporting plate to rotate by taking the molten salt pipe as a circle center and driving the photovoltaic plate to enter and exit the photo-thermal gap, and one photovoltaic plate is used for shielding one photo-thermal plate.
Further, the driving device comprises a hollow driving tube fixedly arranged on the bracket and in an arc shape, a sliding hole formed in one side wall of the driving tube, a driving rope arranged in the driving tube, a sliding block fixedly connected with the driving rope, a driving rod fixedly connected with the supporting plate, and a power mechanism for driving the driving rope to reciprocate; the driving tube takes the axis of the molten salt tube as the center of a circle; one end of the driving rod, which is far away from the supporting plate, is fixedly connected with the sliding block, and the sliding block is arranged in the sliding hole in a sliding way.
Further, the power mechanism comprises a motor, a rotating shaft connected with an output shaft of the motor, and a winding shaft fixedly connected with the rotating shaft; the part of the driving rope, which is arranged outside the driving pipe, is wound on the winding shaft.
Further, a pair of support plates are respectively provided with a sliding groove at one side close to each other, two ends of each photovoltaic plate are respectively connected with a sliding plate, and the sliding plates are slidably arranged in the sliding grooves; the driving device further comprises a connecting rod used for connecting a plurality of sliding plates, a connecting block fixedly connected with the driving pipe, an elastic piece used for connecting the connecting rod and the connecting block, a winder fixedly arranged at one end of the driving pipe far away from the connecting block, a pull rope arranged in the winder, and a winding rod fixedly arranged at one end of the supporting plate close to the winder; the stay cord is arranged at one end outside the winder and fixedly connected with the connecting rod after bypassing the upper side of the winding rod; one end of the elastic piece is hinged with the connecting rod, and the other end of the elastic piece is hinged with the connecting block.
Further, the elastic piece is hinged with the middle part of the connecting rod.
Further, the elastic member includes a sleeve; the sleeve is internally provided with a first magnet, a second magnet, a first spring, a first pull rod and a second pull rod in a sliding manner; the first magnet and the second magnet are mutually attached and attracted; one end of the first spring is fixedly connected with one end of the first magnet, which is far away from the second magnet, and the other end of the first spring is fixedly connected with one end of the first pull rod, which is arranged in the sleeve; one end of the second pull rod, which is arranged in the sleeve, is fixedly connected with one end of the second magnet, which is far away from the first magnet; the outer diameters of the first magnet and the second magnet are larger than the diameters of the openings at the two ends of the sleeve; the first pull rod is arranged at one end outside the sleeve and hinged with the connecting rod, and the second pull rod is arranged at one end outside the sleeve and hinged with the connecting block.
Further, the elastic piece further comprises a second spring arranged inside the sleeve; one end of the second spring is fixedly connected with one end, far away from the first magnet, of the second magnet, and the other end of the second spring is fixedly connected with one end, in the sleeve, of the second pull rod.
Further, the elastic piece further comprises a pair of limiting plates; one limiting plate is arranged at one end of the first pull rod, which is close to the first spring, and the other limiting plate is arranged at one end of the second pull rod, which is close to the second spring; the diameter of the limiting plate is larger than the diameter of the opening at the end part of the sleeve.
Further, the driving device is provided with a pair of driving devices, and the driving devices are respectively arranged at two ends of the photo-thermal plate.
Further, the number of the photo-thermal plates is 3, and the number of the photovoltaic plates is 2.
The technical scheme of the embodiment of the invention has at least the following advantages and beneficial effects: according to the adjustable photovoltaic photo-thermal integrated power generation device, the photo-thermal plate and the photovoltaic plate are integrally arranged, so that the proportion of the photovoltaic plate and the photo-thermal plate to the illumination can be adjusted according to specific illumination conditions. The light and heat plate reflects illumination to the molten salt pipe, heats the molten salt in the molten salt pipe and stores energy. Photovoltaic panels are used for direct power generation. When the illumination intensity is lower (in the morning and in the evening), a certain electricity demand exists at the moment, and the photo-thermal energy storage efficiency is lower, so that the photovoltaic panel below the photo-thermal panel is pushed out of the photo-thermal gap through the driving device to cover the photo-thermal panel, the photo-thermal energy storage power is reduced, the photovoltaic power generation power is increased, and vice versa. Therefore, the photo-thermal energy storage and the photovoltaic power generation can be effectively regulated according to specific conditions, solar energy can be fully utilized, and the utilization efficiency of the solar energy can be effectively regulated, so that the power generation and the energy storage are more reasonable in distribution.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a state of an adjustable photovoltaic photo-thermal integrated power plant according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of two states of an adjustable photovoltaic photo-thermal integrated power generation device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of three states of an adjustable photovoltaic photo-thermal integrated power generation device according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of FIG. 1 in a vertical direction;
FIG. 5 is a cross-sectional view of FIG. 2 taken along a vertical direction;
FIG. 6 is a cross-sectional view of FIG. 3 in a vertical direction;
FIG. 7 is a schematic view of the structure of FIG. 2 from another perspective;
fig. 8 is a schematic structural diagram of a spool portion of an adjustable photovoltaic photo-thermal integrated power generation device according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of the inside of an elastic member of the adjustable photovoltaic photo-thermal integrated power generation device according to the embodiment of the present invention;
fig. 10 is a schematic structural diagram of a driving tube portion of an adjustable photovoltaic photo-thermal integrated power generation device according to an embodiment of the present invention;
fig. 11 is a partially expanded view of fig. 10.
Icon: 10-bracket, 11-supporting plate, 12-fused salt pipe, 13-chute, 14-photo-heating plate, 15-photovoltaic plate, 16-slide plate, 17-winding rod, 20-driving pipe, 21-slide hole, 22-driving rope, 23-driving block, 24-driving rod, 25-winding shaft, 26-rotating shaft, 27-motor, 28-connecting rod, 29-fixed block, 30-elastic piece, 31-sleeve, 32-first magnet, 33-first spring, 34-limiting plate, 35-first pull rod, 36-second magnet, 37-second spring, 38-second pull rod, 40-winding device and 41-pull rope.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of 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 apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention 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 invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which a product of the application is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, 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 explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Examples
As further described below with reference to the specific embodiments, as shown in fig. 1 to 11, the adjustable photovoltaic photo-thermal integrated power generation device of this embodiment includes a pair of opposite brackets 10, a molten salt tube 12 erected on the upper ends of the pair of brackets 10, a pair of support plates 11, a plurality of photo-thermal plates 14 fixedly arranged between the pair of support plates 11, a plurality of photovoltaic plates 15 slidably arranged between the pair of support plates 11, and a driving device; a supporting plate 11 is rotatably connected with the upper end of a bracket 10; the plurality of photo-thermal plates 14 take the axis of the fused salt tube 12 as a focus; the photovoltaic panels 15 are all arranged on the lower surface of the photo-thermal plate 14; a photo-thermal gap for passing through the photovoltaic panel 15 is arranged between two adjacent photo-thermal plates 14, and one photo-thermal gap is used for passing through one photovoltaic panel 15; the driving device is used for driving the supporting plate 11 to rotate around the molten salt pipe 12 as a center of a circle and driving the photovoltaic plate 15 to enter and exit the photo-thermal gap, and the photovoltaic plate 15 is used for shielding a photo-thermal plate 14. Specifically, the photo-thermal plate 14 and the photovoltaic plate 15 are integrally arranged, so that the proportion of the illumination received by the photovoltaic plate 15 and the photo-thermal plate 14 can be adjusted according to specific illumination conditions. Wherein the photo-thermal plate 14 reflects the illumination onto the molten salt pipe 12, heats the molten salt in the molten salt pipe 12, and stores energy. The photovoltaic panel 15 is used for direct power generation. When the illumination intensity is lower (morning and evening), a certain electricity demand exists at the moment, the photo-thermal energy storage efficiency is lower (the melting point of the existing molten salt medium can be lower than 100 ℃, the upper limit temperature can be higher than 500 ℃, so that the existing molten salt medium can keep a certain flowing state when a small amount of illumination is used), therefore, the photovoltaic panel 15 positioned below the photo-thermal panel 14 is pushed out of a photo-thermal gap through the driving device, the photo-thermal panel 14 is covered, the whole effective area of the photo-thermal panel 14 is reduced, the heating of the molten salt tube 12 is reduced, the photo-thermal energy storage power is reduced (the photo-thermal power is gradually reduced in evening, the molten salt temperature in the molten salt tube 12 is lower when the molten salt is completely non-illuminated, the heat loss caused by cooling of the molten salt through whole evening) is reduced, the effective area of the photovoltaic panel 15 is increased, and the power of photovoltaic power generation is increased. On the contrary, when the illumination condition is better (at noon), the photovoltaic panel 15 can be partially retracted under the photo-thermal plate 14, so that the photo-thermal energy storage efficiency is improved, and more energy sources are stored. Therefore, the photo-thermal energy storage and the photovoltaic power generation can be effectively regulated according to specific conditions, solar energy can be fully utilized, and the utilization efficiency of the solar energy can be effectively regulated, so that the power generation and the energy storage are more reasonable in distribution.
The driving device in this embodiment includes a hollow driving tube 20 fixedly disposed on the bracket 10 and having an arc shape, a sliding hole 21 formed on one side wall of the driving tube 20, a driving rope 22 disposed in the driving tube 20, a slider fixedly connected to the driving rope 22, a driving rod 24 fixedly connected to the supporting plate 11, and a power mechanism for driving the driving rope 22 to reciprocate; the driving tube 20 takes the axis of the molten salt tube 12 as the center of a circle; one end of the driving rod 24 far away from the supporting plate 11 is fixedly connected with a sliding block, and the sliding block is arranged in the sliding hole 21 in a sliding way. The power mechanism comprises a motor 27, a rotating shaft 26 connected with an output shaft of the motor 27, and a winding shaft 25 fixedly connected with the rotating shaft 26; the portion of the drive cord 22 outside the drive tube 20 is wound around the spool 25. Specifically, as shown in fig. 8, one end of the driving rope 22 located outside the driving tube 20 is wound on the winding shaft 25, when the motor 27 drives the rotating shaft 26 to rotate, the winding shaft 25 rotates, and then the driving rope 22 is rolled, so that the driving rope 22 rotates along a corresponding direction, when the driving rope 22 moves in the driving tube 20, the sliding block is driven to move in the driving tube 20, and then the driving rod 24 and the supporting rod are driven to rotate by the sliding block with the molten salt tube 12 as a center (as shown in fig. 10 and 11), so that the photovoltaic panel 15 and the photo-thermal panel 14 can be always aligned with the sun within a certain range, the photo-thermal energy storage and photovoltaic power generation efficiency is improved, and the comprehensive utilization efficiency of solar energy is improved.
In the embodiment, a sliding groove 13 is formed in one side, close to each other, of a pair of support plates 11, two ends of a photovoltaic plate 15 are connected with sliding plates 16, and the sliding plates 16 are slidably arranged in the sliding groove 13; the driving device further comprises a connecting rod 28 for connecting the plurality of sliding plates 16, a connecting block fixedly connected with the driving tube 20, an elastic piece 30 for connecting the connecting rod 28 and the connecting block, a winder 40 fixedly arranged at one end of the driving tube 20 far away from the connecting block, a pull rope 41 arranged in the winder 40, and a winding rod 17 fixedly arranged at one end of the supporting plate 11 close to the winder 40; one end of the pull rope 41, which is arranged outside the winder 40, bypasses the upper side of the winding rod 17 and is fixedly connected with the connecting rod 28; one end of the elastic member 30 is hinged with the connecting rod 28, and the other end is hinged with the connecting block. Specifically, when the device is in an initial state of power generation (in the morning, as shown in fig. 1 and 4), the sliding plate 16 is located at the left side of the sliding groove 13, the photovoltaic panel 15 extends out of the photo-thermal gap to shield the photo-thermal plate 14, but does not completely shield the photo-thermal plate, so that the overall power generation and heat storage efficiency is low, but mainly uses photovoltaic power generation, the photo-thermal plate 14 slowly rotates along with the rising of the sun under the driving of the motor 27 along with the rising of the sun, and is aligned with the sun at any time, wherein a certain length of pull rope 41 and a reed (similar to a tape measure) are accommodated in the winder 40, the pull rope 41 can be easily pulled out of the winder 40, the acting force of the pull rope 41 on the connecting rod 28 is far smaller than that of the elastic piece 30 due to the small elasticity of the reed, however, the photovoltaic panel 15 is supported by the elastic member 30, so that the photovoltaic panel 15 does not move completely along with the movement of the photovoltaic panel 15, and is basically kept unchanged in absolute position (as the state of fig. 1-2 changes), so that the photovoltaic panel moves gradually to the right side of the chute 13, wherein it is noted that, during the process that the supporting plate 11 drives the photo-thermal plate 14 to rotate, the photovoltaic panel 15 is supported by the elastic member 30 and can slide in the chute 13 through the sliding plate 16, but because the whole photo-thermal plate 14 is parabolic, the photovoltaic panel 15 can smoothly enter the photo-thermal gap to cover the photo-thermal plate 14, the movement track of the photovoltaic panel 15 does not coincide with the center of the molten salt tube 12, but does circular movement around the molten salt tube 12, so that even if the photovoltaic panel 15 is supported by the elastic member 30, the position of the photovoltaic panel can also change to a certain extent, the spring 30 can adapt to changes in the position of the photovoltaic panel 15 (mainly to changes in the position of the connecting rod 28) through a range of deformations. Over time, the supporting plate 11 continues to rotate under the action of the motor 27 and the driving rope 22, after the supporting plate is to a certain extent, the pull ropes 41 are pulled out of the winder 40, when the supporting plate moves again, the pull ropes 41 bypass the winding rods 17 to apply pulling force to the connecting rods 28, the pulling force of the pull ropes 41 is far greater than the acting force of the elastic pieces 30, and therefore the supporting plate can be directly pulled to the connecting rods 28 to move to the left side of the sliding grooves 13, the photovoltaic panels 15 are pulled out of the photo-thermal gaps and then cover the photo-thermal panels 14, the photovoltaic power generation efficiency is improved, the photo-thermal energy storage efficiency is reduced (because the power consumption needs to be gradually increased, and the photovoltaic power generation and the molten salt power generation are matched to supply power together) at the moment, and the photovoltaic panels 15 are pulled to the right side of the sliding grooves 13 by the pull ropes 41 (as shown in fig. 3 and 6) at the moment and are basically symmetrical with the morning. Until no illumination is at all, the photovoltaic panel 15 and the photo-thermal panel 14 need to be turned back to the original positions in preparation for the power generation operation of the new day. At this time, the motor 27 drives the winding shaft 25 to reversely rotate, the photo-thermal plate 14 is retracted through the supporting plate 11, and at this time, the sliding plate 16 is located at the left side of the sliding groove 13, so that the photovoltaic plate 15 can move along with the sliding groove 13, stretch and gradually return to the winding position, and the elastic member 30 can be pushed back to the initial state.
The elastic member 30 in this embodiment is hinged to the middle of the connecting rod 28. Specifically, considering the expansion and contraction range of the elastic member 30 and the light and heat plate 14 which is arc-shaped, in order to avoid affecting the light and heat plate 14 during expansion and contraction of the elastic member 30, and the plurality of photovoltaic panels 15 can be stably operated at the same time, the elastic member 30 is hinged to the middle portion of the connecting rod 28.
The elastic member 30 in the present embodiment includes a sleeve 31; the sleeve 31 is slidably provided with a first magnet 32, a second magnet 36, a first spring 33, a first pull rod 35, and a second pull rod 38; the first magnet 32 and the second magnet 36 are attached to each other and attracted to each other; one end of the first spring 33 is fixedly connected with one end of the first magnet 32 far away from the second magnet 36, and the other end of the first spring is fixedly connected with one end of the first pull rod 35 arranged in the sleeve 31; one end of the second pull rod 38, which is arranged in the sleeve 31, is fixedly connected with one end of the second magnet 36, which is far away from the first magnet 32; the outer diameters of the first magnet 32 and the second magnet 36 are larger than the diameters of the openings at the two ends of the sleeve 31; the first pull rod 35 is hinged to the connecting rod 28 at one end outside the sleeve 31, and the second pull rod 38 is hinged to the connecting block at one end outside the sleeve 31. The elastic member 30 further includes a second spring 37 provided inside the sleeve 31; one end of the second spring 37 is fixedly connected with one end of the second magnet 36 away from the first magnet 32, and the other end is fixedly connected with one end of the second pull rod 38 arranged in the sleeve 31. Specifically, the spring in the sleeve 31 can adapt to the position change of the photovoltaic panel 15 (mainly the position change of fig. 4 to 5) to a small extent, the first magnet 32 and the second magnet 36 mainly act to connect the first pull rod 35 and the second pull rod 38 together, when the pulling force of the pull rope 41 on the connecting rod 28 is greater than the acting force between the first magnet 32 and the second magnet 36, the first magnet 32 and the second magnet 36 are directly pulled, and at the moment, the elastic element 30 loses the pulling force of the connecting rod 28, so that the elastic element 30 can not greatly hinder the pull rope 41 when the pull rope 41 pulls the connecting rod 28.
The elastic member 30 in the present embodiment further includes a pair of stopper plates 34; one limiting plate 34 is arranged at one end of the first pull rod 35 close to the first spring 33, and the other limiting plate 34 is arranged at one end of the second pull rod 38 close to the second spring 37; the diameter of the limiting plate 34 is larger than the opening diameter of the end of the sleeve 31. Specifically, the limiting plate 34 can prevent the pull rod from being pulled out of the sleeve 31 completely, and can also prevent the first spring 33 or the second spring 37 from being clamped at the opening of the sleeve 31.
The driving device in this embodiment is provided with a pair of driving devices, and the pair of driving devices are respectively disposed at two ends of the photo-thermal plate 14.
The number of photo-thermal plates 14 in this embodiment is 3 and the number of photovoltaic plates 15 is 2. Specifically, considering that an excessive number of photovoltaic panels 15 and photo-thermal panels 14 significantly increases the cost and the operation difficulty, and the failure rate is higher, it is sufficient to provide 3 photo-thermal panels 14,2 photovoltaic panels 15.
In summary, in the photovoltaic and photo-thermal integrated power generation device with adjustable this embodiment, the photo-thermal plate 14 and the photovoltaic plate 15 are integrally arranged, so that the proportion of the photo-thermal plate 14 to the photovoltaic plate 15 to the light can be adjusted according to specific light conditions. Wherein the photo-thermal plate 14 reflects the illumination onto the molten salt pipe 12, heats the molten salt in the molten salt pipe 12, and stores energy. The photovoltaic panel 15 is used for direct power generation. When the illumination intensity is low (morning and evening), a certain electricity demand exists at the moment, and the photo-thermal energy storage efficiency is low, so that the photovoltaic panel 15 positioned below the photo-thermal panel 14 is pushed out of the photo-thermal gap through the driving device to cover the photo-thermal panel 14, the photo-thermal energy storage power is reduced, the photovoltaic power generation power is increased, and vice versa. Therefore, the photo-thermal energy storage and the photovoltaic power generation can be effectively regulated according to specific conditions, solar energy can be fully utilized, and the utilization efficiency of the solar energy can be effectively regulated, so that the power generation and the energy storage are more reasonable in distribution. Furthermore, the inclination angle of the photo-thermal plate 14 and the shielding area of the photo-thermal plate 14 by the photovoltaic panel 15 can be adjusted at one time by the driving device.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An adjustable photovoltaic photo-thermal integrated power generation device which is characterized in that: the solar energy collecting device comprises a pair of oppositely arranged brackets, a molten salt pipe, a pair of supporting plates, a plurality of photo-thermal plates fixedly arranged between the pair of supporting plates, a plurality of photovoltaic plates slidingly arranged between the pair of supporting plates and a driving device, wherein the molten salt pipe is arranged at the upper ends of the pair of brackets; the support plate is rotatably connected with the upper end of the bracket;
the fused salt tube axis is used as a focus by the plurality of photothermal plates; the photovoltaic panels are arranged on the lower surfaces of the photo-thermal plates; a photo-thermal gap for the photovoltaic panel to pass through is arranged between two adjacent photo-thermal plates, and one photo-thermal gap is used for the photovoltaic panel to pass through; the driving device is used for driving the supporting plate to rotate by taking the molten salt pipe as a circle center and driving the photovoltaic plate to enter and exit the photo-thermal gap, and one photovoltaic plate is used for shielding one photo-thermal plate.
2. The adjustable photovoltaic photo-thermal integrated power plant of claim 1, wherein: the driving device comprises a hollow driving pipe fixedly arranged on the bracket and in an arc shape, a sliding hole formed in one side wall of the driving pipe, a driving rope arranged in the driving pipe, a sliding block fixedly connected with the driving rope, a driving rod fixedly connected with the supporting plate, and a power mechanism for driving the driving rope to reciprocate;
the driving tube takes the axis of the molten salt tube as the center of a circle; one end of the driving rod, which is far away from the supporting plate, is fixedly connected with the sliding block, and the sliding block is arranged in the sliding hole in a sliding way.
3. The adjustable photovoltaic photo-thermal integrated power plant of claim 2, wherein: the power mechanism comprises a motor, a rotating shaft connected with an output shaft of the motor and a winding shaft fixedly connected with the rotating shaft; the part of the driving rope, which is arranged outside the driving pipe, is wound on the winding shaft.
4. The adjustable photovoltaic photo-thermal integrated power plant of claim 2, wherein: a pair of support plates are arranged on one side close to each other, sliding grooves are formed in one side, close to each other, of each support plate, two ends of each photovoltaic plate are connected with sliding plates, and the sliding plates are arranged in the sliding grooves in a sliding manner;
the driving device further comprises a connecting rod used for connecting a plurality of sliding plates, a connecting block fixedly connected with the driving pipe, an elastic piece used for connecting the connecting rod and the connecting block, a winder fixedly arranged at one end of the driving pipe far away from the connecting block, a pull rope arranged in the winder, and a winding rod fixedly arranged at one end of the supporting plate close to the winder;
the stay cord is arranged at one end outside the winder and fixedly connected with the connecting rod after bypassing the upper side of the winding rod; one end of the elastic piece is hinged with the connecting rod, and the other end of the elastic piece is hinged with the connecting block.
5. The adjustable photovoltaic photo-thermal integrated power plant of claim 4, wherein: the elastic piece is hinged with the middle part of the connecting rod.
6. The adjustable photovoltaic photo-thermal integrated power plant of claim 4, wherein: the elastic member includes a sleeve; the sleeve is internally provided with a first magnet, a second magnet, a first spring, a first pull rod and a second pull rod in a sliding manner;
the first magnet and the second magnet are mutually attached and attracted; one end of the first spring is fixedly connected with one end of the first magnet, which is far away from the second magnet, and the other end of the first spring is fixedly connected with one end of the first pull rod, which is arranged in the sleeve; one end of the second pull rod, which is arranged in the sleeve, is fixedly connected with one end of the second magnet, which is far away from the first magnet;
the outer diameters of the first magnet and the second magnet are larger than the diameters of the openings at the two ends of the sleeve; the first pull rod is arranged at one end outside the sleeve and hinged with the connecting rod, and the second pull rod is arranged at one end outside the sleeve and hinged with the connecting block.
7. The adjustable photovoltaic photo-thermal integrated power plant of claim 6, wherein: the elastic piece further comprises a second spring arranged in the sleeve; one end of the second spring is fixedly connected with one end, far away from the first magnet, of the second magnet, and the other end of the second spring is fixedly connected with one end, in the sleeve, of the second pull rod.
8. The adjustable photovoltaic photo-thermal integrated power plant of claim 7, wherein: the elastic piece further comprises a pair of limiting plates; one limiting plate is arranged at one end of the first pull rod, which is close to the first spring, and the other limiting plate is arranged at one end of the second pull rod, which is close to the second spring; the diameter of the limiting plate is larger than the diameter of the opening at the end part of the sleeve.
9. The adjustable photovoltaic photo-thermal integrated power plant according to any one of claims 1-8, wherein: the driving device is provided with a pair of driving devices, and the driving devices are respectively arranged at two ends of the photo-thermal plate.
10. The adjustable photovoltaic photo-thermal integrated power plant of claim 9, wherein: the number of the photo-thermal plates is 3, and the number of the photovoltaic plates is 2.
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| CN202310376468.XA CN116086027B (en) | 2023-04-11 | 2023-04-11 | Photovoltaic photo-thermal integrated power generation device with adjustable |
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| CN104009706A (en) * | 2014-06-18 | 2014-08-27 | 兰州理工大学 | Solar semi-shielding type thermal drive automatic tracking device |
| CN203827289U (en) * | 2014-04-16 | 2014-09-10 | 北京兆阳能源技术有限公司 | Photo-thermal power station photovoltaic auxiliary power generation system |
| CN107947686A (en) * | 2017-11-28 | 2018-04-20 | 武汉大学 | Photovoltaic and photothermal coordinated regulation formula solar energy composite utilizes device |
| CN207471829U (en) * | 2017-10-24 | 2018-06-08 | 苏寄闲 | A kind of photovoltaic heat collector and system |
| CN113983704A (en) * | 2021-11-18 | 2022-01-28 | 柴煜标 | Trough type light-gathering solar heat utilization water heating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203827289U (en) * | 2014-04-16 | 2014-09-10 | 北京兆阳能源技术有限公司 | Photo-thermal power station photovoltaic auxiliary power generation system |
| CN104009706A (en) * | 2014-06-18 | 2014-08-27 | 兰州理工大学 | Solar semi-shielding type thermal drive automatic tracking device |
| CN207471829U (en) * | 2017-10-24 | 2018-06-08 | 苏寄闲 | A kind of photovoltaic heat collector and system |
| CN107947686A (en) * | 2017-11-28 | 2018-04-20 | 武汉大学 | Photovoltaic and photothermal coordinated regulation formula solar energy composite utilizes device |
| CN113983704A (en) * | 2021-11-18 | 2022-01-28 | 柴煜标 | Trough type light-gathering solar heat utilization water heating device |
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