Solar photovoltaic power generation waste heat recovery device

Abstract

The utility model discloses a solar photovoltaic power generation waste heat recovery device which comprises a support, solar panels are arranged on the support, the number of the solar panels is two, a cleaning mechanism is arranged on the outer sides of the solar panels, and a waste heat recovery mechanism is arranged below the solar panels. The waste heat generated by the solar panel can be utilized, the heat preservation tank is arranged, when water in the cold water tank is heated to a certain temperature, the water in the cold water tank can be conveyed into the heat preservation tank through the connecting pipe, heat of the water is stored, and the cleaning mechanism is arranged, so that the water in the cold water tank can be cleaned by opening a spray head. The solar panel can be washed, then the driving motor is started to drive the scraping plate to clean dust and other garbage on the solar panel, the cleanliness of the solar panel is guaranteed, and therefore the sunlight absorption efficiency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of solar energy waste heat recovery, in particular to a solar energy photovoltaic power generation waste heat recovery device. Background Art

[0002] The photovoltaic power generation mode uses the photovoltaic effect of the semiconductor interface to directly convert light energy into electrical energy. A large amount of waste heat will be generated in the process of solar power generation. The waste heat can be utilized through the solar photovoltaic power generation waste heat recovery device to ensure that the heat energy is not wasted.

[0003] After searching the Chinese patent CN205566216U, a solar photovoltaic power generation waste heat recovery device was found. This patent has a simple structure and array distribution by setting up box-type collectors and heat exchangers. It can cover the back area of ​​the photovoltaic panel to the greatest extent, collect heat over a large area, effectively reduce the temperature of the photovoltaic panel, and improve the photoelectric conversion efficiency.

[0004] However, there are still some shortcomings in a solar photovoltaic power generation waste heat recovery device. Although the patent can use waste heat through a heat exchanger to convert cold water into hot water, it cannot keep the hot water converted by the heat exchanger warm. If it is not used in time, the hot water will become cold again, which will affect the normal use of the user. In addition, there is no cleaning mechanism on the solar panel. After long-term use, a large amount of dust will be attached to the surface of the solar panel. If it is not handled in time, it will not only affect its absorption efficiency of sunlight, but also affect the heat collection effect of the collector. No effective solution has been proposed for the problems in the relevant technology. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a solar photovoltaic power generation waste heat recovery device to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A solar photovoltaic power generation waste heat recovery device comprises a bracket, on which are disposed two solar panels, a cleaning mechanism is disposed outside the solar panel, and a waste heat recovery mechanism is disposed below the solar panel.

[0008] Furthermore, the cleaning mechanism includes an upper fixing frame arranged at the top of the bracket, a lower fixing frame is arranged at the bottom of the bracket, a threaded rod is arranged between the upper fixing frame and the lower fixing frame, the number of the threaded rods is three, a slider is threadedly connected to the threaded rod, one side of the slider is connected to the mounting plate through a connecting block, a scraper is arranged under the mounting plate, one end of the threaded rod is connected to a first bevel gear, the first bevel gear is meshed with a second bevel gear, the second bevel gear is connected to a rotating shaft, one end of the rotating shaft is connected to an output end of a driving motor, and the driving motor is arranged on the outside of the upper fixing frame.

[0009] Furthermore, the waste heat recovery mechanism includes an installation box arranged on the rear side of the solar panel, a heat collecting tube is arranged inside the installation box, one end of the heat collecting tube is connected to the spiral heat exchange tube, the spiral heat exchange tube is placed in the cold water tank, one end of the spiral heat exchange tube is connected to the reflux pump, the reflux pump is connected to the heat collecting tube, and the cold water tank is connected to the insulation tank through a connecting pipe.

[0010] Furthermore, a first temperature sensor and a first liquid level gauge are provided inside the cold water tank, a second temperature sensor and a second liquid level gauge are provided inside the insulation tank, and a third temperature sensor is provided inside the heat collecting tube. The first temperature sensor, the first liquid level sensor, the second temperature sensor, the second liquid level gauge and the third temperature sensor are electrically connected to the controller.

[0011] Furthermore, the controller is arranged inside the control box, a battery is arranged inside the control box, the battery is connected to the solar panel, the battery is connected to the inverter, and the inverter is electrically connected to the controller.

[0012] Furthermore, a nozzle is provided on the upper fixed frame, the nozzle is connected to the drain pipe, the drain pipe is connected to the diversion pipe, one end of the diversion pipe is connected to the cold water tank through the water inlet pipe, and the drain pipe and the water inlet pipe are provided with electromagnetic valves, which are electrically connected to the controller.

[0013] Furthermore, a water outlet pipe is provided on one side of the insulation tank.

[0014] The beneficial effects of the utility model are:

[0015] (1) By setting up a cleaning mechanism, the solar panel can be flushed by opening the nozzle, and then the drive motor is started to drive the scraper to clean the dust and other garbage on the solar panel, ensuring the cleanliness of the solar panel, thereby ensuring the absorption efficiency of sunlight and the heat collection effect of the heat collecting tube.

[0016] (2) By setting up a waste heat recovery mechanism, the waste heat generated by the solar panel can be utilized, and by setting up a heat preservation tank, when the water in the cold water tank is heated to a certain temperature, the water in the cold water tank can be transferred to the heat preservation tank through the connecting pipe, thereby preserving the heat of the water and ensuring that the device can still provide hot water to users on rainy days, thereby expanding the scope of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a front view of a solar photovoltaic power generation waste heat recovery device according to an embodiment of the utility model.

[0019] Figure 2 It is a side view of a solar photovoltaic power generation waste heat recovery device according to an embodiment of the utility model.

[0020] Figure 3 It is a top view of a solar photovoltaic power generation waste heat recovery device according to an embodiment of the utility model.

[0021] Figure 4 It is a diagram of the internal structure of an installation box of a solar photovoltaic power generation waste heat recovery device according to an embodiment of the utility model.

[0022] Figure 5 It is a diagram of the internal structure of a cold water tank of a solar photovoltaic power generation waste heat recovery device according to an embodiment of the utility model.

[0023] Figure 6 It is a diagram of the internal structure of a control box of a solar photovoltaic power generation waste heat recovery device according to an embodiment of the utility model.

[0024] In the figure:

[0025] 1. Bracket; 2. Solar panel; 3. Cleaning mechanism; 301. Upper fixing frame; 302. Lower fixing frame; 303. Threaded rod; 304. Sliding block; 305. Connecting block; 306. Mounting plate; 307. Scraper; 308. First bevel gear; 309. Second bevel gear; 310. Rotating shaft; 311. Driving motor; 4. Waste heat recovery mechanism; 401. Mounting box; 402. Heat collecting tube; 403. Spiral heat exchange tube; 4 04. Cold water tank; 405. Reflux pump; 406. Connecting pipe; 407. Insulation tank; 5. First temperature sensor; 6. First liquid level gauge; 7. Second temperature sensor; 8. Second liquid level gauge; 9. Third temperature sensor; 10. Controller; 11. Control box; 12. Battery; 13. Inverter; 14. Nozzle; 15. Drain pipe; 16. Diverter pipe; 17. Water inlet pipe; 18. Solenoid valve; 19. Water outlet pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] According to an embodiment of the utility model, a solar photovoltaic power generation waste heat recovery device is provided.

[0028] Embodiment 1

[0029] like Figure 1-Figure 3 As shown, according to the embodiment of the utility model, the solar photovoltaic power generation waste heat recovery device includes a bracket 1, on which a solar panel 2 is arranged, the number of the solar panels 2 is two, a cleaning mechanism 3 is arranged on the outer side of the solar panel 2, and a waste heat recovery mechanism 4 is arranged below the solar panel 2, the cleaning mechanism 3 includes an upper fixing frame 301 arranged at the top of the bracket 1, a lower fixing frame 302 is arranged at the bottom of the bracket 1, a threaded rod 303 is arranged between the upper fixing frame 301 and the lower fixing frame 302, the number of the threaded rod 303 is three, a slider 304 is threadedly connected to the threaded rod 303, one side of the slider 304 is connected to the mounting plate 306 through a connecting block 305, a scraper 307 is arranged below the mounting plate 306, one end of the threaded rod 303 is connected to a first bevel gear 308, the first bevel gear 308 is meshed with a second bevel gear 309, the second bevel gear 309 is connected to a rotating shaft 310, one end of the rotating shaft 310 is connected to the output end of a driving motor 311, and the driving motor 311 is arranged outside the upper fixing frame 301.

[0030] like Figure 1-Figure 6As shown, the waste heat recovery mechanism 4 includes an installation box 401 arranged at the rear side of the solar panel 2, and a heat collecting pipe 402 is arranged inside the installation box 401. One end of the heat collecting pipe 402 is connected to a spiral heat exchange pipe 403. The spiral heat exchange pipe 403 is placed in a cold water tank 404. One end of the spiral heat exchange pipe 403 is connected to a reflux pump 405. The reflux pump 405 is connected to the heat collecting pipe 402. The cold water tank 404 is connected to the insulation tank 407 through a connecting pipe 406. A valve is provided, and the valve is electrically connected to the controller 10. By providing an insulation tank 407, the insulation tank 407 can be kept warm after heating is completed, and a heating pipe is also provided inside the insulation tank 407, so that hot water can still be provided to the user through the insulation tank 407 on cloudy days. A first temperature sensor 5 and a first liquid level gauge 6 are provided inside the cold water tank 404, and a second temperature sensor 7 and a second liquid level gauge 8 are provided in the insulation tank 407. A third temperature sensor 9 is provided inside the heat collecting pipe 402. The first temperature sensor 5, the first liquid level sensor, the second temperature sensor 7 and the second liquid level gauge 8 are electrically connected to the controller 10. By providing the first liquid level gauge 6 and the second liquid level gauge 8, the water amount in the cold water tank 404 and the insulation tank 407 can be understood. The controller 10 is provided inside the control box 11, and a battery 12 is provided inside the control box 11. The battery 12 is connected to the solar panel 2, and the battery 12 is connected to the inverter 13. The inverter 1 3 is electrically connected to the controller 10, a nozzle 14 is provided on the upper fixing frame 301, the nozzle 14 is connected to the drain pipe 15, the drain pipe 15 is connected to the shunt pipe 16, one end of the shunt pipe 16 is connected to the cold water tank 404 through the water inlet pipe 17, the drain pipe 15 and the water inlet pipe 17 are both provided with an electromagnetic valve 18, the electromagnetic valve 18 is electrically connected to the controller 10, to ensure that the water spraying and the water filling in the cold water tank 404 do not affect each other, and a water outlet pipe 19 is provided on one side of the insulation tank 407.

[0031] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0032] In actual application, by arranging a heat collecting pipe 402 at the rear side of the solar panel 2, the heat generated by the solar panel 2 is absorbed by the conductive liquid inside the heat collecting pipe 402, and the cold water is heated by the spiral heat exchange tube 403 inside the cold water tank 404, so that the waste heat of solar power generation can be recycled, and the liquid temperature inside the cold water tank 404 can be measured by the second temperature sensor 7. When the water temperature reaches a certain height, the water in the cold water tank 404 is discharged into the insulation tank 407 through the connecting pipe 406, so as to keep the hot water warm after the heating is completed, and to inject new cold water into the cold water tank 404, so as to continue to heat the cold water, so as to prevent the conductive liquid inside the heat collecting pipe 402 from failing to cool the solar panel 2, and in cloudy conditions, the electromagnetic valve 18 on the connecting pipe 406 can be directly started by the controller 10, and the cold water can be directly heated by the heating pipe inside the insulation tank 407, so as to ensure that the hot water is kept warm after the heating is completed. The user always has hot water to use, and by arranging the first temperature sensor 5 inside the heat collecting tube 402, when the temperature of the conducting liquid inside the heat collecting tube 402 is lower than the preset value of the controller 10, the reflux pump 405 is controlled to stop moving, and after the solar panel 2 has been used for a long time, by opening the electromagnetic valve 18 on the drain pipe 15, water is absorbed from the water source through the shunt pipe 16, and then the solar panel 2 can be sprayed with water through the nozzle 14, and then by starting the driving motor 311, the rotating shaft 310 is driven to rotate, and the rotation of the rotating shaft 310 drives the second bevel gear 309 to rotate, the second bevel gear 309 drives the first bevel gear 308 to rotate, the first bevel gear 308 drives the threaded rod 303 to rotate, and drives the slider 304 to move, so as to drive the scraper 307 to clean the solar panel 2, ensure the cleanliness of the solar panel 2, thereby ensuring the absorption efficiency of sunlight and the heat collection effect of the heat collecting tube 402.

[0033] In summary, with the aid of the above-mentioned technical scheme of the utility model, by setting up the cleaning mechanism 3, the solar panel 2 can be flushed by opening the nozzle 14, and then by starting the driving motor 311, the scraper 307 is driven to clean the dust and other garbage on the solar panel 2, thereby ensuring the cleanliness of the solar panel 2, thereby ensuring the absorption efficiency of sunlight, and ensuring the heat collection effect of the heat collecting tube 402, and by setting up the waste heat recovery mechanism 4, the waste heat generated by the solar panel 2 can be utilized, and by setting up the insulation tank 407, when the water inside the cold water tank 404 is heated to a certain temperature, the water inside the cold water tank 404 can be transferred to the insulation tank 407 through the connecting pipe 406, thereby preserving the heat of the water, and ensuring that the device can still provide hot water to the user on rainy days, thereby expanding the technical effect of the use range of the device.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A solar photovoltaic power generation waste heat recovery device, characterized in that: The invention comprises a support (1), wherein a solar panel (2) is arranged on the support (1), wherein the number of the solar panels (2) is two, a cleaning mechanism (3) is arranged on the outer side of the solar panel (2), and a waste heat recovery mechanism (4) is arranged below the solar panel (2), wherein the waste heat recovery mechanism (4) comprises an installation box (401) arranged on the rear side of the solar panel (2), wherein a heat collecting tube (402) is arranged inside the installation box (401), wherein one end of the heat collecting tube (402) is connected to a spiral heat exchange tube (403), wherein the spiral heat exchange tube (403) is placed in a cold water tank (404), wherein one end of the spiral heat exchange tube (403) is connected to a reflux pump (405), wherein the reflux pump (405) is connected to the heat collecting tube (402), and wherein the cold water tank (404) is connected to a heat preservation tank (407) via a connecting tube (406).

2. A solar photovoltaic power generation waste heat recovery device according to claim 1, characterized in that: The cleaning mechanism (3) comprises an upper fixing frame (301) arranged at the top end of the bracket (1); a lower fixing frame (302) is arranged at the bottom end of the bracket (1); a threaded rod (303) is arranged between the upper fixing frame (301) and the lower fixing frame (302); the number of the threaded rods (303) is three; a slider (304) is threadedly connected to the threaded rod (303); one side of the slider (304) is connected to the mounting plate (306) via a connecting block (305) ), a scraper (307) is provided below the mounting plate (306), one end of the threaded rod (303) is connected to a first bevel gear (308), the first bevel gear (308) is meshed with a second bevel gear (309), the second bevel gear (309) is connected to a rotating shaft (310), one end of the rotating shaft (310) is connected to an output end of a driving motor (311), and the driving motor (311) is provided on the outside of the upper fixing frame (301).

3. A solar photovoltaic power generation waste heat recovery device according to claim 1, characterized in that: The cold water tank (404) is provided with a first temperature sensor (5) and a first liquid level gauge (6), the heat preservation tank (407) is provided with a second temperature sensor (7) and a second liquid level gauge (8), the heat collecting tube (402) is provided with a third temperature sensor (9), and the first temperature sensor (5), the first liquid level sensor, the second temperature sensor (7), the second liquid level gauge (8) and the third temperature sensor (9) are electrically connected to a controller (10).

4. A solar photovoltaic power generation waste heat recovery device according to claim 3, characterized in that: The controller (10) is arranged inside a control box (11), a storage battery (12) is arranged inside the control box (11), the storage battery (12) is connected to the solar panel (2), the storage battery (12) is connected to an inverter (13), and the inverter (13) is electrically connected to the controller (10).

5. A solar photovoltaic power generation waste heat recovery device according to claim 2, characterized in that: The upper fixing frame (301) is provided with a nozzle (14), the nozzle (14) is connected to a drainage pipe (15), the drainage pipe (15) is connected to a shunt pipe (16), one end of the shunt pipe (16) is connected to a cold water tank (404) via a water inlet pipe (17), and an electromagnetic valve (18) is provided on the drainage pipe (15) and the water inlet pipe (17), and the electromagnetic valve (18) is electrically connected to a controller (10).

6. A solar photovoltaic power generation waste heat recovery device according to claim 1, characterized in that: A water outlet pipe (19) is provided on one side of the heat preservation tank (407).

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