Solar thermal collector power-free automatic light tracking system and working method

Abstract

The invention belongs to the field of solar heat collection, and particularly relates to a solar heat collector power-free automatic light tracking system and a working method. Sunlight irradiates in the balance block component, and light energy is absorbed by the second heat absorption plate in the balance block component, so that the temperature of liquid around the second heat absorption plate rises; the liquid in the balance block part after absorbing heat flows under the influence of the density difference, so that the center of gravity of the balance block part shifts; after the gravity center of the balance block component shifts, under the action of lever force, a torque is formed on the gear edge of the reinforcement gear pair in contact with the balance block component, so that the reinforcement gear pair is driven to rotate; the reinforcement gear pair transmits rotation torque to the turbine-worm mechanism to drive a worm to rotate, and the worm transmits power to a turbine; the turbine transmits power and torque to the driving gear set through the turbine supporting shaft, the driving gear set is used for driving the heat collector supporting component to rotate, and the purpose of tracking sunlight is achieved.

Description

Technical Field

[0001] The present application belongs to the field of solar thermal collection, and in particular to a non-electrical automatic light tracking system and working method for a solar thermal collector. Background Art

[0002] At present, solar collectors are widely used in solar water heating systems and solar heating systems. In order to improve the efficiency of solar thermal collection, it is necessary to optically track the solar collectors so that the collectors are always perpendicular to the sunlight. Traditional solar collector optical tracking systems are usually implemented using electric motors or hydraulic systems driven by electrical energy. However, these systems have at least the following disadvantages:

[0003] (1) Dependence on electric drive and high energy consumption: Most existing optical tracking systems rely on electric drive components such as motors, controllers and sensors, which leads to high costs; the electric drive system increases the complexity and cost of the system, including equipment acquisition, installation and maintenance costs. Energy consumption: The system consumes electricity to drive the tracking mechanism, which reduces the overall energy efficiency and even offsets part of the benefits of solar energy collection. Dependence on power supply: The system requires a reliable power supply and is difficult to apply in remote areas or when the power supply is unstable. Maintenance complexity: The power system is prone to failure and requires professional maintenance, which increases maintenance costs and time.

[0004] (2) Insufficient tracking accuracy and efficiency: Some existing optical tracking systems, even those powered by electricity, may have problems with insufficient tracking accuracy or inefficiency. This is mainly reflected in the slow response speed: Some systems respond slowly to changes in the sun's position, resulting in missing some sunlight and reducing energy collection efficiency. Tracking error: Factors such as wear of the mechanical structure and sensor accuracy limitations can cause tracking errors, affecting energy collection efficiency. Complex control algorithms: In order to improve accuracy, some systems require complex control algorithms, which increases system cost and complexity.

[0005] (3) Complex structure and heavy weight: Electric-driven optical tracking systems are usually complex in structure, bulky in size, and heavy in weight, which increases the difficulty of installation and transportation, and may also increase system costs and wind resistance.

[0006] (4) Poor environmental adaptability: Some systems are sensitive to environmental conditions, such as extreme temperature, wind, etc., which may affect their normal operation.

[0007] (5) High material cost: Some systems use expensive materials, such as precision motors and sensors, which increases system cost.

[0008] In summary, existing solar collector light tracking systems generally have problems such as high cost, low efficiency, dependence on electricity, complex maintenance, and poor environmental adaptability, which limit their widespread application.

[0009] There is an urgent need for a system that can achieve automatic light tracking of solar collectors without the need for electrical energy.

[0010] The information in this background technology section is only intended to enhance the understanding of the overall background of the application and should not be construed as an admission or any form of suggestion that the information constitutes the prior art already known to a person of ordinary skill in the art. Summary of the invention

[0011] In order to solve the above problems, the present application provides a low-cost, efficient and reliable solar collector automatic light tracking system that does not require electric drive, is easy to maintain and has strong environmental adaptability. The system can utilize the thermal effect of sunlight, and the fluid absorbs solar energy to produce density differences and flow, thereby driving the center of gravity of the mechanical balance block to shift, and realize automatic tracking of sunlight, thereby improving the efficiency of solar thermal collection, reducing energy consumption and maintenance costs, and improving the reliability of the system.

[0012] In some embodiments of the present application, a solar thermal collector non-powered automatic light tracking system is provided, the system comprising:

[0013] A solar thermal collector, the solar thermal collector comprising a first heat absorbing plate, for absorbing energy from solar radiation and converting it into heat energy, the heat energy being transferred to a heat carrier flowing through the first heat absorbing plate by conduction and convection;

[0014] A collector support component, located below the solar collector and used to support the solar collector;

[0015] A balancing weight component, wherein the balancing weight component has a closed hollow cavity filled with a liquid whose density decreases as the temperature increases, and a second heat absorbing plate is provided at the bottom of the cavity, which can transfer the absorbed solar energy to the liquid in contact with the second heat absorbing plate, so that a density difference is generated inside the cavity, thereby causing the center of gravity of the balancing weight component to shift;

[0016] A force-enhancing gear pair is mounted on a force-enhancing gear pair support frame and is in contact with the balancing block component, and can drive the force-enhancing gear pair to rotate when the balancing block component is re-offset;

[0017] The turbine-worm mechanism is connected to the power-increasing gear pair. The rotation of the power-increasing gear pair can drive the worm in the turbine-worm mechanism to rotate, and the worm transmits power to the turbine;

[0018] The driving gear set includes a first driving gear and a second driving gear, which are respectively located at two ends of the turbine and in contact with the collector support component. The rotation of the turbine drives the driving gear set to rotate, thereby driving the collector support component, thereby causing the first heat absorption plate to automatically track the sun.

[0019] In some embodiments of the present application, the light tracking system further includes a shading plate, which is disposed above the balancing weight component, and the shading plate divides the balancing weight component into two parts, and is used to adjust the amount of radiation on the balancing weight component.

[0020] In some embodiments of the present application, the balance block component also includes a balance plate, which is located above the second heat absorption plate and is used to adjust the center of the balance block component. The balance plate is in the shape of a plate extending along the length direction of the balance block component and is provided with through holes to facilitate the flow of liquid.

[0021] In some embodiments of the present application, the balancing weight component further includes a rotating shaft groove and a rolling shaft, the rolling shaft is located in the rotating shaft groove, and the rolling shaft is connected to the balancing plate via a supporting shaft.

[0022] In some embodiments of the present application, a limiting groove is provided at the portion where the rotating shaft groove contacts the supporting shaft, so as to expand the movement range of the supporting shaft.

[0023] In some embodiments of the present application, the support shaft is two cylindrical structures, the two cylindrical support shafts are connected to the rolling shaft, the rolling shaft is a cylindrical structure, installed in the rotating shaft groove for rotational motion, and the two cylindrical support shafts rotate along the rotating shaft groove.

[0024] In some embodiments of the present application, the balancing weight component further includes a counterweight block, and the counterweight block is located at both ends of the length direction of the hollow cavity and below the second heat absorbing plate.

[0025] In some embodiments of the present application, the first driving gear and the second driving gear are respectively meshed with the helical gear rings provided below the collector support component to achieve the transmission of force and torque.

[0026] In some embodiments of the present application, the torque and power transmitted by the power-amplifying gear pair are unidirectionally transmitted from the worm to the turbine, thereby preventing the turbine from reversely driving the worm and avoiding affecting the center of gravity of the balancing weight component.

[0027] In some embodiments of the present application, a method for operating a solar thermal collector automatic light tracking system without power includes the following steps:

[0028] When sunlight shines into the balance weight component, the light energy is absorbed by the second heat absorbing plate inside the balance weight component, thereby increasing the temperature of the liquid around the second heat absorbing plate;

[0029] After absorbing heat, the liquid inside the balance weight component flows under the influence of density difference, causing the center of gravity of the balance weight component to shift;

[0030] After the center of gravity of the balancing block component is shifted, under the action of the lever force, the gear edge of the power-enhancing gear pair in contact with it forms a torque, thereby driving the power-enhancing gear pair to rotate;

[0031] The power-amplifying gear pair transmits the rotational torque to the turbine-worm mechanism, driving the worm to rotate, and the worm transmits the power to the turbine; the turbine transmits the power and torque to the driving gear set through the turbine support shaft, and the driving gear set is used to drive the collector support component, driving it to rotate, thereby achieving the purpose of the first heating plate tracking sunlight.

[0032] Compared with the prior art, this application has at least the following advantages:

[0033] 1. This application utilizes the temperature difference change of the liquid caused by solar radiation to drive the tracking mechanism without any electricity.

[0034] 2. The present application is a highly efficient energy conversion mechanism that converts tiny temperature differences into sufficient mechanical force to achieve precise light tracking.

[0035] 3. This application uses gravity and buoyancy as driving energy and realizes automatic sun tracking through mechanical structure design. The mechanical structure has stability and reliability.

[0036] 4. The turbine-worm mechanism of the present application has a self-locking function, which ensures that the system can maintain a stable tracking state at different solar angles and can overcome external interference such as wind.

[0037] 5. This application reduces costs, does not require electric drive, saves the cost of electric components such as motors, controllers, sensors, etc., and significantly reduces the initial investment and long-term operating costs of the system. This makes the solar thermal collection system more competitive in cost-sensitive application scenarios.

[0038] 6. This application improves efficiency by maximizing the sunshine time and light intensity of the solar collector through precise sun tracking, thereby significantly improving the solar energy collection efficiency and obtaining higher energy output.

[0039] 7. This application gets rid of the dependence on power supply, avoids the risk of downtime caused by power system failure, improves the reliability and stability of the system, and is especially suitable for remote areas or environments with unstable power supply.

[0040] 8. The system of this application has a simple structure, reduces vulnerable parts, reduces maintenance difficulty and cost, and extends the service life of the system.

[0041] 9. This application does not require electricity for tracking, is more environmentally friendly and energy-saving, reduces carbon emissions, and is in line with the concept of sustainable development.

[0042] 10. The present application has a compact structure, light weight, and is easy to install and transport, thus reducing installation costs and difficulty.

[0043] In summary, this application realizes the power-free automatic light tracking of solar collectors through ingenious mechanical design or physical principles. It has significant advantages in cost, efficiency, reliability, maintenance, environmental protection and adaptability, and has broad market application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0045] Figure 1 A schematic diagram of the structure of a solar collector automatic light tracking system without power in some embodiments of the present application;

[0046] Figure 2 The structure of the balance weight component in some embodiments of the present application is shown in FIG. Figure 1 ;

[0047] Figure 3 The structure of the balance weight component in some embodiments of the present application is shown in FIG. Figure 2 ;

[0048] Figure 4 The structure of the balance weight component in some embodiments of the present application is shown in FIG. Figure 3 ;

[0049] Figure 5 A schematic diagram of a transmission of a solar collector automatic light tracking system without power in some embodiments of the present application;

[0050] Figure 6 This is a schematic diagram of a collector support component in some embodiments of the present application, wherein:

[0051] (a) is an isometric view of the collector support component, and (b) is a bottom view of the collector support component;

[0052] Among them, 100-balance block component; 200-shade plate; 300-solar collector; 400-collector support component; 500-drive gear set; 600-turbine-worm mechanism; 700-turbine-worm mechanism support frame; 800-force amplifying gear pair; 900-force amplifying gear pair support frame; 101-balance plate; 102-counterweight block; 103-second heat absorbing plate; 401-bevel gear ring; 402-fixed plate; 403-flat plate support shaft; 501-first drive gear; 502-second drive gear; 601-turbine; 602-turbine support shaft; 603-worm. DETAILED DESCRIPTION

[0053] Below, the specific embodiments of the present application are described in detail in conjunction with the accompanying drawings, but they are not intended to limit the present application. In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is described in detail below in conjunction with the accompanying drawings and specific implementation methods. Below, the embodiments of the present disclosure are further described in detail in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present disclosure.

[0054] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0055] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0056] The following is combined with Figure 1-6 The technical solution of this application is described in detail.

[0057] In some embodiments of the present application, a solar thermal collector non-powered automatic light tracking system is provided, the system comprising:

[0058] A solar thermal collector 300, wherein the solar thermal collector 300 comprises a first heat absorbing plate for absorbing energy from solar radiation and converting it into heat energy, and the heat energy is transferred to a heat carrier flowing through the first heat absorbing plate through conduction and convection;

[0059] A collector support component 400, located below the solar collector 300, for supporting the solar collector 300;

[0060] The balancing weight component 100 has a closed hollow cavity filled with a liquid whose density decreases as the temperature increases, and a second heat absorbing plate 103 is provided at the bottom of the cavity, which can transfer the absorbed solar energy to the liquid in contact with the second heat absorbing plate 103, so that a density difference is generated inside the cavity, thereby causing the center of gravity of the balancing weight component 100 to shift;

[0061] The force-enhancing gear pair 800 is mounted on the force-enhancing gear pair 800 support frame 900 and is in contact with the balancing weight component 100. When the balancing weight component 100 is re-offset, it can drive the force-enhancing gear pair 800 to rotate;

[0062] The worm-gear mechanism 600 is connected to the power-increasing gear pair 800. The rotation of the power-increasing gear pair 800 can drive the worm 603 in the worm-gear mechanism 600 to rotate, and the worm 603 transmits power to the worm 601.

[0063] The driving gear set 500 includes a first driving gear 501 and a second driving gear 502, which are respectively located at the two ends of the turbine 601 and are in contact with the collector support component 400. The rotation of the turbine 601 drives the driving gear set 500 to rotate, thereby driving the collector support component 400, so that the first heat absorption plate automatically tracks the sun.

[0064] In some embodiments of the present application, the light tracking system further includes a shading plate 200 , and the shading plate 200 divides the balancing weight component 100 into two parts, and is used to adjust the amount of illumination on the balancing weight component 100 .

[0065] In some embodiments of the present application, the turbine-worm gear mechanism 600 is installed on a turbine-worm gear mechanism support frame 700 .

[0066] In some embodiments of the present application, the driving gear set is connected to the worm gear mechanism 600 via a worm support shaft 602 .

[0067] In some embodiments of the present application, the balancing weight component 100 further includes a balancing plate 101, which is located in the cavity. The balancing plate 101 is located above the second heat absorption plate 103 and is used to adjust the center of the balancing weight component 100. The balancing plate 101 is in the shape of a plate extending along the length direction of the balancing weight component 100 and is provided with through holes to facilitate the flow of liquid.

[0068] In some embodiments of the present application, the balancing weight component 100 further includes a rotating shaft groove and a rolling shaft. The rolling shaft is located in the rotating shaft groove, and the rolling shaft is connected to the balancing board 101 via a supporting shaft.

[0069] In some embodiments of the present application, a limiting groove is provided at the position where the rotating shaft groove contacts the supporting shaft, so as to expand the movement range of the supporting shaft, and the supporting shaft can continue to rotate along the limiting groove when it touches the wall of the limiting groove.

[0070] In some embodiments of the present application, the balance block component 100 also includes a counterweight 102, which is located in the hollow cavity, arranged at both ends of the length direction of the cavity, and located below the second heat absorption plate 103, which can not only increase the area receiving sunlight, but also increase the torque of the balance block component 100.

[0071] In some embodiments of the present application, the first driving gear 501 and the second driving gear 502 are respectively meshed with the helical gear ring 401 provided below the collector support component 400 to achieve the transmission of force and torque.

[0072] In some embodiments of the present application, the torque and power transmitted by the power-amplifying gear pair 800 are unidirectionally transmitted from the worm 603 to the turbine 601 , preventing the turbine 601 from reversely driving the worm 603 and avoiding affecting the center of gravity of the balancing weight component 100 .

[0073] In some embodiments of the present application, the balancing weight component 100 further includes a sealing cover for sealing the balancing weight component 100 .

[0074] In some embodiments of the present application, the sealing cover is a rectangular thin plate, which is used to seal the liquid inside the cavity and fix / position the internal parts.

[0075] In some embodiments of the present application, the support shaft is two cylindrical structures, the two cylindrical support shafts are connected to the rolling shaft, the rolling shaft is a cylindrical structure, installed in the rotating shaft groove for rotational motion, and the two cylindrical support shafts rotate along the rotating shaft groove.

[0076] In some embodiments of the present application, the counterweight block 102 is made of metal or non-metal material with a higher density to increase the rotational torque of the balance weight component.

[0077] In some embodiments of the present application, the liquid whose density decreases with increasing temperature is acetone. The freezing point of acetone is -94.7°C. When the temperature is low in winter, it will not freeze. At the same time, its density change is more obviously affected by temperature. For example, the density of acetone: from 0.786g / cm 3 (0℃) reduced to 0.656g / cm 3 (100℃), a decrease of about 16.6%.

[0078] In some embodiments of the present application, the overall system working principle and process are as follows:

[0079] When sunlight irradiates the balancing weight component 100, the light energy is absorbed by the second heat absorbing plate 103 inside the balancing weight component 100 (the coating can be made of the same material as the coating in the solar collector 300, such as black paint, which is usually composed of organic polymers and black pigments (such as carbon black) and can absorb most of the incident solar radiation), thereby increasing the temperature of the liquid near the second heat absorbing plate 103;

[0080] The liquid inside the balancing weight component 100 has a low freezing point and a density that decreases significantly with increasing temperature, such as acetone. After absorbing heat, the fluid inside the balancing weight component 100 flows under the influence of density difference, causing the center of gravity of the balancing weight component 100 to shift.

[0081] In conjunction with the structural characteristics of the large aspect ratio of the balancing block component 100, that is, the long strip structure, after the center of gravity of the balancing block component 100 is shifted, under the action of the lever force, a large torque will be formed on the gear edge of the force-boosting gear pair 800 in contact with it, thereby driving the force-boosting gear pair 800 to rotate. The force-boosting gear pair 800 is fixed on the force-boosting gear pair 800 support frame 900.

[0082] In some embodiments of the present application, the balancing weight component 100 is divided into two parts by the middle partition, that is, the sunshade 200. Take the moment of twelve o'clock noon as an example, when the sun is in the south, the plane of the sunshade 200 faces the sun; at this time, the east and west halves of the balancing weight component 100 receive the same light, there is no flow of liquid inside the sunshade 200, there is no change in the center of gravity, and the balancing weight component 100 maintains the same position.

[0083] When the sun is in the southeast, under the shade of the sunshade 200, the eastern half of the balance weight component 100 is exposed to more sunlight, while the western half is exposed to less sunlight. The temperature of the liquid inside the eastern half that is exposed to more sunlight gradually increases, and the density of the liquid in this part decreases; on the contrary, the temperature of the western half decreases to a certain extent, and the density of the liquid in this part increases. This produces two effects: 1) The eastern half of the balance weight component 100 has a low density and low weight; the western half has a high density and high weight; this produces a shift in the center of gravity, causing the balance weight component 100 to deflect to a certain extent. Under the action of the lever, this center of gravity deflection force is amplified and transmitted.

[0084] On the contrary, if the sun is in the southwest direction at this time, an opposite force will be generated. Therefore, with the help of the driving gear set 500, the turbine-worm mechanism 600 and the power-increasing gear pair 800 transmission mechanism, the heat collecting plate of the solar collector 300 is always facing the sun. That is, when the balancing block component 100 rotates clockwise, the collector support component 400 also rotates clockwise.

[0085] In some embodiments of the present application, the force-increasing gear pair 800 transmits the rotational torque to the turbine-worm mechanism 600, driving the worm 603 to rotate, and the worm 603 transmits the power to the turbine 601. This torque transmission process is a one-way process. That is, the torque and power can only be transmitted from the worm 603 to the turbine 601, which prevents the turbine 601 from driving the worm 603 in reverse, and avoids affecting the center of gravity of the balancing weight component 100.

[0086] In some embodiments of the present application, the turbine 601 transmits power and torque to the first driving gear 501 and the second driving gear 502 of the driving gear set 500 through the turbine support shaft 602. These two gears are used to drive the collector support component 400 to rotate and achieve the purpose of tracking sunlight.

[0087] In some embodiments of the present application, the first driving gear 501 and the second driving gear 502 are arranged at the edge of the collector support component 400 to drive its rotation. At the same time, the first driving gear 501 and the second driving gear 502 can also play a role in supporting the collector support component 400.

[0088] In some embodiments of the present application, the rotation centers of the first driving gear 501 and the second driving gear 502 are not on the same plane as the collector support component 400, and the helical gear ring 401 is meshed to achieve the transmission of force and torque.

[0089] In some embodiments of the present application, the balance weight component 100 includes a balance plate 101, a counterweight block 102, a second heat absorption plate 103, and a sealing cover for sealing. The sealing cover is not shown in the drawings and is a rectangular thin plate for sealing the internal liquid and fixing / positioning the internal parts.

[0090] In some embodiments of the present application, the balancing plate 101, which is mainly used to adjust the center of gravity of the balancing block component 100, can be a thin plate with holes punched on it (to facilitate the flow of fluid). It is connected to the cylindrical rolling shaft through two cylindrical support shafts and installed in the shaft groove for rotation. Because the two cylindrical support shafts rotate along the shaft groove, in order to expand the range of motion of the support shaft, two limit grooves are opened in the shaft groove.

[0091] In some embodiments of the present application, a coating is provided on the surface of the second heat absorbing plate 103 to better absorb sunlight and convert it into heat energy.

[0092] In some embodiments of the present application, when sunlight shines on the second heat absorbing plate 103, the solar energy is converted into thermal energy, thereby heating the liquid near the second heat absorbing plate 103. After being heated, the density of the liquid decreases and it moves upward, forming a flow inside the balance block component 100. At this time, the force mainly includes two parts: 1) the center of gravity offset force. Assuming that the left side of the balance block component 100 is heated more, the density of the liquid on the left side decreases, causing the weight of this part to also decrease, thus forming a situation where the left side is light and the right side is heavy. This causes the balance block component 100 to rotate clockwise; 2) liquid flow force. If the left side receives more heat, it will form the following: Figure 3As shown in the flow, the flowing liquid will provide a flow force for the balance board 101, forcing the balance board 101 to rotate clockwise, so that the center of gravity of the balance board 101 also moves to the right. Both of these forces cause the center of gravity of the balance weight component 100 to move to the right, thereby promoting the rotation of the balance weight component 100 in the clockwise direction.

[0093] In some embodiments of the present application, the force transmission path is: the force-enhancing gear pair 800 → the worm 603 → the turbine 601 → the first drive gear 501 and the second drive gear → the helical gear ring 401, which ultimately drives the rotation of the solar collector 300.

[0094] In some embodiments of the present application, the collector support component 400 includes a flat plate support shaft 403, a fixing plate 402 and a supporting flat plate.

[0095] The flat plate support shaft 403 and the fixing plate 402 are connected to a fixed body such as the ground. The fixing plate 402 can be connected by bolts or anchor screws.

[0096] In some embodiments of the present application, the support plate between the plate support shaft 403 and the solar collector 300 is connected by a thrust bearing. On the one hand, the bearing provides support force, and on the other hand, it reduces the resistance when the support plate rotates.

[0097] In the present application, the second heat absorbing plate at the bottom of the balance block component transfers the absorbed solar energy to the liquid in contact with it, so that the temperature of the liquid near the second heat absorbing plate increases and the density decreases. Thus, the liquid flow behavior from the bottom to the top is formed; the power of liquid flow: when the liquid flows due to the density difference, when the liquid hits an obstacle, it will exert a force on the obstacle, and this force can push the obstacle to move; at the same time, due to the convection phenomenon caused by the density difference in the liquid, the liquid with higher density sinks, while the liquid with lower density rises, thus forming a convection circulation. The force transmission is then realized through mechanical elements.

[0098] The present application provides a solar collector automatic light tracking system that is low-cost, highly efficient and reliable, does not require electric drive, is easy to maintain, and has strong environmental adaptability. The system aims to achieve automatic tracking of the sun through clever mechanical design or other physical principles, thereby maximizing the energy collection efficiency of the solar collector and reducing the system operation and maintenance costs, ultimately promoting the popularization and application of solar energy technology.

[0099] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A solar collector non-powered automatic light tracking system, characterized in that: The system comprises: A solar thermal collector, the solar thermal collector comprising a first heat absorbing plate, for absorbing energy from solar radiation and converting it into heat energy, which is transferred to a heat carrier flowing through the first heat absorbing plate; A collector support component, located below the solar collector and used to support the solar collector; A balancing weight component, wherein the balancing weight component has a closed hollow cavity filled with a liquid whose density decreases as the temperature increases, and a second heat absorbing plate is provided at the bottom of the cavity, which can transfer the absorbed solar energy to the liquid in contact with the second heat absorbing plate, so that a density difference is generated inside the cavity, thereby causing the center of gravity of the balancing weight component to shift; A force-enhancing gear pair is mounted on a force-enhancing gear pair support frame and is in contact with the balancing block component, and can drive the force-enhancing gear pair to rotate when the balancing block component is re-offset; The turbine-worm mechanism is connected to the power-increasing gear pair. The rotation of the power-increasing gear pair can drive the worm in the turbine-worm mechanism to rotate, and the worm transmits power to the turbine; The driving gear set includes a first driving gear and a second driving gear, which are respectively located at two ends of the turbine and in contact with the collector support component. The rotation of the turbine drives the driving gear set to rotate, thereby driving the collector support component, thereby causing the first heat absorption plate to automatically track the sun.

2. The solar collector non-powered automatic light tracking system according to claim 1, characterized in that: The light tracking system also includes a shading plate, which is arranged above the balance weight component. The shading plate divides the balance weight component into two parts and is used to adjust the amount of radiation on the balance weight component.

3. The solar collector non-powered automatic light tracking system according to claim 1, characterized in that: The balancing block component also includes a balancing plate, which is located above the second heat absorbing plate and is used to adjust the center of the balancing block component. The balancing plate is in the shape of a plate extending along the length direction of the balancing block component and is provided with through holes for facilitating the flow of liquid.

4. The solar collector non-powered automatic light tracking system according to claim 3, characterized in that: The balancing weight component further comprises a rotating shaft groove and a rolling shaft. The rolling shaft is located in the rotating shaft groove, and the rolling shaft is connected to the balancing plate via a supporting shaft.

5. The solar collector non-powered automatic light tracking system according to claim 4, characterized in that: A limiting groove is provided at the position where the rotating shaft groove contacts the supporting shaft, so as to expand the movement range of the supporting shaft.

6. The solar collector non-powered automatic light tracking system according to claim 4, characterized in that: The support shafts are two cylindrical structures, the two cylindrical support shafts are connected to the rolling shaft, the rolling shaft is a cylindrical structure, installed in the rotating shaft groove for rotational movement, and the two cylindrical support shafts rotate along the rotating shaft groove.

7. The solar collector non-powered automatic light tracking system according to claim 1, characterized in that: The balancing weight component further includes a counterweight block, which is located at two ends of the hollow cavity in the length direction and below the second heat absorbing plate.

8. The solar collector non-powered automatic light tracking system according to claim 1, characterized in that: The first driving gear and the second driving gear are respectively meshed with the helical gear rings arranged below the collector support component to achieve the transmission of force and torque.

9. The solar collector non-powered automatic light tracking system according to claim 1, characterized in that: The torque and power transmitted by the power-increasing gear pair are transmitted unidirectionally from the worm to the turbine, thereby preventing the turbine from driving the worm in reverse and avoiding the influence on the center of gravity of the balancing weight component.

10. A method for operating a solar collector automatic light tracking system without power according to any one of claims 1 to 9, characterized in that: The following steps are involved: When sunlight shines into the balance weight component, the light energy is absorbed by the second heat absorbing plate inside the balance weight component, thereby increasing the temperature of the liquid around the second heat absorbing plate; After absorbing heat, the liquid inside the balance weight component flows under the influence of density difference, causing the center of gravity of the balance weight component to shift; After the center of gravity of the balancing block component is shifted, under the action of the lever force, the gear edge of the power-enhancing gear pair in contact with it forms a torque, thereby driving the power-enhancing gear pair to rotate; The power-amplifying gear pair transmits the rotational torque to the turbine-worm mechanism, driving the worm to rotate, and the worm transmits the power to the turbine; the turbine transmits the power and torque to the drive gear set through the turbine support shaft, and the drive gear set is used to drive the collector support component, driving it to rotate, and then driving the solar collector to track sunlight.

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