Solar thermoelectric power generation device based on intelligent tracking support

Abstract

The invention relates to a solar temperature difference power generation technology, aims to convert photo-thermal energy into electric energy through a temperature difference power generation device, solves the problem that the direct solar radiation angle affects the power generation efficiency, and particularly relates to a solar temperature difference power generation device based on an intelligent tracking support. Comprising a Fresnel temperature difference conversion device, a temperature difference piece (heat collector) protection device, a temperature difference piece air cooling device, an intelligent tracking device and a supporting chassis. The light intensity is sensed through the photosensitive resistors in the four directions, the control system compares the light intensity data received by the four photosensitive resistors, generates an adjusting signal and transmits the adjusting signal to the stepping motor to adjust the steering action, it is ensured that the light intensity data received by the photosensitive resistors in the four directions on the outer frame are the same, and the steering effect is improved. The function of automatically tracking the sunlight angle of the sun is achieved, after the sun rises every time, the device can be automatically adjusted to track the light source, the control system can automatically adjust various parameters and set data again, and automatic sunrise and sunset tracking is achieved.

Description

Technical Field

[0001] The invention relates to solar temperature difference power generation technology, in particular to a solar temperature difference power generation device based on an intelligent tracking bracket. Background Art

[0002] Thermoelectric power generation technology is a technology that utilizes the temperature difference between high and low temperature heat sources, uses low boiling point working fluid as circulating working fluid, and uses high temperature heat source to heat and evaporate the circulating working fluid to generate steam to drive turbines for power generation based on the Rankine cycle.

[0003] After the solar thermoelectric power generation device is fixed in position, in order to ensure the photovoltaic power generation efficiency, the outer frame has a large area, and the outer frame is supported only by the supporting frame. When the external wind is strong, the wind resistance of the outer frame is large, so that the wind affects the stability of the solar thermoelectric power generation device, and the influence of external shadows will also affect the photovoltaic power generation efficiency of the solar thermoelectric power generation device.

[0004] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0005] The purpose of the present invention is to sense the light intensity through photoresistors in four directions. The control system generates an adjustment signal by comparing the light intensity data received by the four photoresistors, and transmits it to the stepper motor to adjust the steering action, thereby ensuring that the light intensity data received by the photoresistors in four directions on the outer frame are the same, thereby realizing the function of automatically tracking the sun's sunshine angle. Every time the sun rises, the equipment can automatically adjust to track the light source, and the control system can also automatically readjust various parameters and set data to realize automatic tracking of sunrise and sunset, thereby solving the problem that the parameters need to be re-set after the power generation device is moved, which is inconvenient for the staff to install and the shadow affects the power generation efficiency. A solar temperature difference power generation device based on an intelligent tracking bracket is proposed.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A solar temperature difference power generation device based on an intelligent tracking bracket comprises a supporting chassis, a supporting column is installed on the upper surface of the supporting column, a supporting frame is installed on the upper end of the supporting column, an outer frame is rotatably connected to the upper inner wall of the supporting frame, a plurality of Fresnel lenses are installed inside the outer frame, photoresistors are installed in four directions on the front surface of the outer frame, a rotating adjustment piece is installed on one side of the outer wall of the supporting frame, a reinforcement component and an adjustment component are arranged on the outer side of the supporting frame, the reinforcement component comprises a reinforcement push rod 1, a reinforcement push rod 1 is rotatably connected to the middle position of the front surface of the supporting frame through a rotating seat, a rotating seat is also installed at the rear surface of the outer frame at the position corresponding to the reinforcement push rod 1, and side holes are opened on both sides of the upper surface of the supporting chassis.

[0008] As a preferred embodiment of the present invention, a collector protection device is installed on the inner side of the outer frame at the position corresponding to the Fresnel lens, an air cooling system is installed at the rear end of the collector protection device, and silicon carbide ceramic sheets, aerogel insulation felt, silicon carbide ceramic sheets, aerogel insulation felt and copper sheets are installed in sequence on the inner side of the collector protection device from the Fresnel lens to the position of the air cooling system.

[0009] As a preferred embodiment of the present invention, air holes are provided on four directions of the outer wall of the collector protection device, a cooling fan is installed at the rear end of the air cooling system, copper sheets, temperature difference cooling sheets and heat sinks are installed in sequence on the inner side of the air cooling system from the collector protection device to the cooling fan position, and a semiconductor temperature difference power generation sheet is also installed between the collector protection device and the air cooling system.

[0010] As a preferred embodiment of the present invention, the adjustment component includes a rotating slide groove, a rotating slide groove is opened on the outer side of the upper surface of the support chassis, an engaging tooth groove is opened on the lower surface inside the rotating slide groove, a rotating groove is opened on the upper surface of the support chassis near the rotating slide groove, a rotating ring is rotatably connected to the upper side wall of the support column, and a sliding block is slidably connected to the inner side of the rotating slide groove.

[0011] As a preferred embodiment of the present invention, the adjustment component also includes a reinforced push rod 2, the upper surface of the sliding block is rotatably connected to the reinforced push rod 2 through a rotating seat, a rotating seat is integrally formed with the outer wall of the rotating ring at a position corresponding to the position of the reinforced push rod 2, a sliding plate is integrally formed at the lower end of the support column, and a position groove is opened on the upper surface of the support chassis at the position corresponding to the sliding plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The light intensity is sensed by photoresistors, and the control system automatically tracks the sun's rays through a photoresistor light intensity comparison method. This allows the function of automatically tracking the sun's angle of illumination. The support columns slide on the inside of the position slide to move the outer frame on the supporting chassis, thereby avoiding shadows, improving photovoltaic power generation efficiency, and at the same time enhancing the wind resistance of the outer frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0015] Figure 1 It is the main structure diagram of the present invention;

[0016] Figure 2 For the present invention Figure 1 The rear view structure diagram;

[0017] Figure 3 It is a structural diagram of the rotating chute of the present invention;

[0018] Figure 4 A structural diagram of a reinforced push rod according to the present invention;

[0019] In the figure: 1. Support chassis; 2. Support column; 3. Outer frame; 4. Photoresistor; 5. Rotating adjustment piece; 6. Support frame; 7. Air cooling system; 8. Cooling fan; 9. Collector protection device; 10. Air vent; 11. Reinforcement push rod one; 12. Position slide; 13. Reinforcement push rod two; 14. Rotating slide; 15. Side hole. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1:

[0022] See also Figure 1-3As shown, a solar temperature difference power generation device based on an intelligent tracking bracket includes a supporting chassis 1, a supporting column 2 is installed on the upper surface of the supporting column 2, a supporting frame 6 is installed on the upper end of the supporting column 2, an outer frame 3 is rotatably connected to the upper inner wall of the supporting frame 6, a plurality of Fresnel lenses are installed inside the outer frame 3, photoresistors 4 are installed on the four directions of the front surface of the outer frame 3, a rotating adjustment member 5 is installed on one side of the outer wall of the supporting frame 6, a collector protection device 9 is installed at the position corresponding to the Fresnel lens on the inner side of the outer frame 3, an air cooling system 7 is installed at the rear end of the collector protection device 9, and a plurality of Fresnel lenses are installed inside the outer frame 3. Silicon carbide ceramic sheets, aerogel insulation felt, silicon carbide ceramic sheets, aerogel insulation felt and copper sheets are installed in sequence from the Fresnel lens to the air cooling system 7. Air holes 10 are opened in four directions on the outer wall of the collector protection device 9. A cooling fan 8 is installed at the rear end of the air cooling system 7. Copper sheets, temperature difference cooling sheets and heat sinks are installed in sequence on the inner side of the air cooling system 7 from the collector protection device 9 to the cooling fan 8. A semiconductor temperature difference power generation sheet is also installed between the collector protection device 9 and the air cooling system, the booster plate, and 7. The Fresnel lens is fixed on the outer frame 3. The semiconductor temperature difference power generation sheet is located at the Fresnel lens. The Fresnel lens optical path, and the upper and lower surfaces of the semiconductor temperature difference power generation sheet are in close contact with the collector protection device 9 and the air cooling system 7 respectively. When sunlight enters the Fresnel lens, it is focused on the collector protection device 9, and the collector converts light energy into heat energy to form a high temperature end and a low temperature end, thereby generating temperature difference power generation. This device overcomes the problem of low solar energy density and applies the semiconductor temperature difference power generation module to the field of solar power generation. It has the characteristics of simple structure, high efficiency, low cost and strong practicality. In addition, the device uses the photoresistor 4 to sense the light intensity, and the control system uses the photoresistor light to generate the temperature difference power generation module. The strong comparison method can realize automatic tracking of sunlight, thereby realizing the function of automatically tracking the angle of sunlight. This power generation device is an innovative solar power generation device, which has a performance that exceeds the power generation of traditional photovoltaics by two or three times or more, and can more effectively convert solar energy resources. The Fresnel convex lens focuses the light to a point through direct sunlight, and uses heat conduction to drive the temperature difference power generation sheet to generate electricity. In order to better track the direct sunlight angle, the device uses a photoresistor 4 to sense the light angle, thereby realizing the intelligent rotation of the motor and automatically tracking the sunlight angle to maximize the conversion of solar energy resources.

[0023] In order to protect the safety of the semiconductor thermoelectric power generation device, the device is equipped with a heat insulation protection device, a power generation device, and a cooling device. The heat insulation protection device includes 1 cm thick silicon carbide ceramic (temperature resistance 1400-1700℃), 0.2 cm thick aerogel insulation felt (temperature resistance 1000-1500℃), 0.5 cm thick silicon carbide ceramic, 0.1 cm thick aerogel insulation felt, and 1 cm thick copper plate; the power generation device includes a semiconductor thermoelectric power generation sheet, and the cooling device includes a copper sheet, a thermoelectric cooling sheet, a heat sink, a fan, and a 2A micro booster plate. The box of the Fresnel lens housing device is provided with air holes 10 around it, and a motor fan is installed at the bottom to ensure that the maximum temperature of the thermoelectric power generation device does not exceed 180 degrees Celsius and reaches 80 degrees Celsius at low temperatures; (When using ordinary low-temperature thermoelectric power generation sheets, the heat insulation layer is designed to be about 3-4 cm. If the thermoelectric power generation sheet is resistant to high temperature and adopts temperature-resistant materials, the heat insulation device can be designed to be 2-3 cm. The design of the heat insulation layer device is the same with different thermoelectric sheet materials);

[0024] A reinforcement component and an adjustment component are arranged on the outside of the supporting frame 6, the reinforcement component includes a reinforcement push rod 11, and a reinforcement push rod 11 is rotatably connected to the middle position of the front surface of the supporting frame 6 through a rotating seat, and the two ends of the reinforcement push rod 11 are respectively connected to the outer frame 3 and the supporting frame 6, so that when the rotating adjustment member 5 adjusts the angle of the outer frame 3, the reinforcement push rod 11 can change its length following the rotation of the outer frame 3, and limit its length after the rotation angle of the outer frame 3 reaches the corresponding angle, and a rotating seat is also installed at the position of the reinforcement push rod 11 on the rear surface of the outer frame 3. Side holes 15 are opened on both sides of the upper surface of the supporting chassis 1. The setting of the side holes 15 enables the supporting chassis 1 to be clamped in a raised position when the device is installed in a rugged place, which is convenient for fixing the device. The adjustment component includes a rotating slide groove 14, and the rotating slide groove 14 is in a circular ring shape. A rotating slide groove 14 is opened on the outer side of the upper surface of the supporting chassis 1, and the lower surface inside the rotating slide groove 14 is opened. The movable plate 32 is provided with a movable gear 32 and a movable gear 32, and the movable gear 32 is engaged with the movable gear 32, so that the movable gear 32 can drive the movable plate to move in the inner side of the movable slide groove 14 when rotating. A rotating groove is provided on the upper surface of the supporting chassis 1 near the rotating slide groove 14. The setting of the rotating groove separates the central part and the edge part of the supporting chassis 1, and the two can rotate relative to each other. A rotating ring is rotatably connected above the outer wall of the supporting column 2, and the sliding block is slidably connected to the inner side of the rotating slide groove 14. The upper surface of the sliding block is rotatably connected to a reinforcement push rod 2 13 through a rotating seat. A rotating seat is integrally formed at the outer wall of the rotating ring corresponding to the position of the reinforcement push rod 2 13. A sliding plate is integrally formed at the lower end of the supporting column 2. A position slide groove 12 is provided on the upper surface of the supporting chassis 1 corresponding to the position of the sliding plate. An adjusting push rod is provided on the inner side of the position slide groove 12 corresponding to the position of the sliding plate. The adjusting push rod can adjust the position of the sliding plate in the position slide groove 12.

[0025] In the prior art, after the solar thermoelectric power generation device is fixed in position, in order to ensure the photovoltaic power generation efficiency, the area of ​​the outer frame 3 is large, and the outer frame 3 is supported only by the support frame 6. When the external wind is strong, the wind resistance of the outer frame 3 is large, so that the wind affects the stability of the solar thermoelectric power generation device, and the influence of external shadows will also affect the photovoltaic power generation efficiency of the solar thermoelectric power generation device.

[0026] The control system of the solar temperature difference power generation device detects the tilt angle data, tilt direction data, wind resistance data, shadow area data and shadow moving speed data of the outer frame 3, the wind force data and light intensity data of the external environment during the photovoltaic power generation process of the solar temperature difference power generation device. c Exceeding the wind resistance setting value FZ S When the environmental wind force data HF, the tilt angle data QJ and the tilt direction data QF of the outer frame 3 are retrieved, the wind resistance value FZ of the outer frame 3 is calculated. J =(ρ×S F ×C D ×HF 2 / 2, ρ is the air density, S F The surface area of ​​the outer frame 3 for mounting the Fresnel lens, C D is the drag coefficient, if FZ c =FZ J , determine that the measurement is correct, and perform wind resistance data FZ c and windage setting value FZ S Data comparison, if FZ c >FZ S , it is determined that the wind resistance is large and may affect the stability of the solar temperature difference power generation device, and an angle adjustment signal is generated to adjust the angle of the outer frame 3; otherwise, it is determined that the measurement is wrong and the wind resistance is measured again; the control system transmits the angle adjustment signal to the reinforcement push rod 11, and the reinforcement push rod 11 extends to push the outer frame 3 upward to rotate the angle, and the FZ c <FZ S When the length adjustment of the reinforcing push rod 11 is stopped, the size of the shadow blocked on the outer frame 3 is measured;

[0027] When the Fresnel lens on the outer frame 3 is blocked by a shadow, the control system calculates the shadow area data S y And the shadow moving speed data V y To retrieve, if S y S , it is determined that the shadow has little effect on the power generation efficiency, and no adjustment operation is performed. S S To set the shadow area size; conversely, compare the shadow area size change. If S​y If the shadow gradually decreases, it is determined that the shadow has little effect on the power generation efficiency and no adjustment operation is performed; otherwise, the shadow movement speed data V y Set mobile data V S If V y = 0, a direction adjustment signal is generated to adjust the direction of the outer frame 3; if V y ≠0 and V y <V S , and also generates a direction adjustment signal to adjust the direction of the outer frame 3; otherwise, it is determined that the shadow moves faster and no adjustment is required; the control system transmits the direction adjustment signal to the rotating mechanism on the inner side of the support column 2, and at the same time records the inclination angle and inclination direction of the outer frame 3. The rotating mechanism directs the outer frame 3 in the direction of the shadow movement. If the shadow does not move, it rotates to the side without the shadow. The adjustment push rod on the inner side of the rear position slide groove 12 receives the signal and shortens, driving the support column 2 to move its position from the inner side of the position slide groove 12 to the outer side of the supporting chassis 1. During the movement, the reinforcement push rod 2 13 is extended to always support the support column 2. After the adjustment is completed, the bottom frames 14 and the reinforcement push rod 1 11 on both sides change in length, and the inclination angle and inclination direction of the outer frame 3 are readjusted to the state recorded before the adjustment. The length of both ends of the bottom frame 14 can be changed. When only one side changes in length, the outer frame 3 will tilt at an angle, which is convenient for adjusting the position of the outer frame 3.

[0028] When the present invention is in use, the control system of the solar temperature difference power generation device detects the tilt angle data, tilt direction data, wind resistance data, shadow area data and shadow moving speed data of the outer frame 3, the wind force data and light intensity data of the external environment during the process of photovoltaic power generation of the solar temperature difference power generation device, and detects the wind resistance data FZ c Exceeding the wind resistance setting value FZ S When the environmental wind force data HF, the tilt angle data QJ and the tilt direction data QF of the outer frame 3 are retrieved, the wind resistance value FZ of the outer frame 3 is calculated. J =ρ×S F ×C D ×HF 2 ) / 2, ρ is the air density, S F The surface area of ​​the outer frame 3 for mounting the Fresnel lens, C D is the drag coefficient, if FZ c =FZ J , determine that the measurement is correct, and perform wind resistance data FZ c and windage setting value FZ S Data comparison, if FZ c >FZ S, it is determined that the wind resistance is large and may affect the stability of the solar temperature difference power generation device, and an angle adjustment signal is generated to adjust the angle of the outer frame 3; otherwise, it is determined that the measurement is wrong and the wind resistance is measured again; the control system transmits the angle adjustment signal to the reinforcement push rod 11, and the reinforcement push rod 11 extends to push the outer frame 3 upward to rotate the angle, and the FZ c <FZ S When the length adjustment of the reinforcing push rod 11 is stopped, the size of the shadow blocked on the outer frame 3 is measured;

[0029] When the Fresnel lens on the outer frame 3 is blocked by a shadow, the control system calculates the shadow area data S y And the shadow moving speed data V y To retrieve, if S y S , it is determined that the shadow has little effect on the power generation efficiency, and no adjustment operation is performed. S S To set the shadow area size; conversely, compare the shadow area size change. If S y If the shadow gradually decreases, it is determined that the shadow has little effect on the power generation efficiency and no adjustment operation is performed; otherwise, the shadow movement speed data V y Set mobile data V S If V y = 0, a direction adjustment signal is generated to adjust the direction of the outer frame 3; if V y ≠0 and V y <V S , and also generates a direction adjustment signal to adjust the direction of the outer frame 3; otherwise, it is determined that the shadow moves faster and no adjustment is required; the control system transmits the direction adjustment signal to the rotating mechanism on the inner side of the support column 2, and at the same time records the inclination angle and inclination direction of the outer frame 3. The rotating mechanism directs the outer frame 3 in the direction of the shadow movement. If the shadow does not move, it rotates to the side without the shadow. The adjustment push rod on the inner side of the rear position slide groove 12 receives the signal and shortens, driving the support column 2 to move its position from the inner side of the position slide groove 12 to the outer side of the supporting chassis 1. During the movement, the reinforcement push rod 2 13 is extended to always support the support column 2. After the adjustment is completed, the bottom frames 14 and the reinforcement push rod 1 11 on both sides change in length, and the inclination angle and inclination direction of the outer frame 3 are readjusted to the state recorded before the adjustment. The length of both ends of the bottom frame 14 can be changed. When only one side changes in length, the outer frame 3 will tilt at an angle, which is convenient for adjusting the position of the outer frame 3.

[0030] ​The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A solar temperature difference power generation device based on an intelligent tracking bracket, comprising a supporting chassis (1), a supporting column (2) being installed on the upper surface of the supporting column (2), a supporting frame (6) being installed on the upper end of the supporting column (2), an outer frame (3) being rotatably connected to the upper inner wall of the supporting frame (6), a plurality of Fresnel lenses being installed inside the outer frame (3), photoresistors (4) being installed on four directions of the front surface of the outer frame (3), and a rotating adjusting member (5) being installed on one side of the outer wall of the supporting frame (6), characterized in that: A reinforcement component and an adjustment component are arranged on the outside of the support frame (6), and the reinforcement component includes a reinforcement push rod (11). The middle position of the front surface of the support frame (6) is rotatably connected to the reinforcement push rod (11) through a rotating seat, and a rotating seat is also installed on the rear surface of the outer frame (3) at a position corresponding to the reinforcement push rod (11). Side holes (15) are opened on both sides of the upper surface of the support chassis (1).

2. The solar temperature difference power generation device based on the intelligent tracking bracket according to claim 1 is characterized in that: A collector protection device (9) is installed at a position corresponding to the Fresnel lens on the inner side of the outer frame (3), an air cooling system (7) is installed at the rear end of the collector protection device (9), and a silicon carbide ceramic sheet, an aerogel insulation felt, a silicon carbide ceramic sheet, an aerogel insulation felt and a copper sheet are installed in sequence on the inner side of the collector protection device (9) from the Fresnel lens to the position of the air cooling system (7).

3. The solar temperature difference power generation device based on the intelligent tracking bracket according to claim 2 is characterized in that: The outer wall of the collector protection device (9) is provided with air holes (10) in four directions, a cooling fan (8) is installed at the rear end of the air cooling system (7), and a copper sheet, a temperature difference cooling sheet and a heat sink are installed in sequence on the inner side of the air cooling system (7) from the collector protection device (9) to the cooling fan (8), and a semiconductor temperature difference power generation sheet is also installed between the collector protection device (9) and the air cooling system (7).

4. The solar temperature difference power generation device based on the intelligent tracking bracket according to claim 1 is characterized in that: The adjustment component comprises a rotating slide groove (14), the rotating slide groove (14) is provided on the outer side of the upper surface of the supporting chassis (1), an engaging tooth groove is provided on the inner lower surface of the rotating slide groove (14), a rotating groove is provided on the upper surface of the supporting chassis (1) near the rotating slide groove (14), a rotating ring is rotatably connected to the upper side wall of the supporting column (2), and a sliding block is slidably connected to the inner side of the rotating slide groove (14).

5. The solar temperature difference power generation device based on the intelligent tracking bracket according to claim 4 is characterized in that: The adjustment component also includes a second reinforcement push rod (13), the upper surface of the sliding block is rotatably connected to the second reinforcement push rod (13) through a rotating seat, the outer wall of the rotating ring is integrally formed with a rotating seat at a position corresponding to the second reinforcement push rod (13), the lower end of the support column (2) is integrally formed with a sliding plate, and a position sliding groove (12) is opened on the upper surface of the support chassis (1) at a position corresponding to the sliding plate.

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