Light-tracking solar energy collector

Abstract

The present invention relates to the technical field of light energy collectors, specifically a light-tracking light energy collector, a frame and a first guiding bracket and a second guiding bracket on its inner wall; a linear guiding groove is provided on the first guiding bracket, and an arc guiding groove is provided on the second guiding bracket; the inner wall of the frame is designed with an assembly cavity in a sealed state, and a coiled high-reflection metal film is installed inside the assembly cavity. A switching terminal is installed at the free end of the high-reflection metal film, and the switching terminal can form a sliding connection relationship with the linear guiding groove or the arc guiding groove; a selector is installed on the inner wall of the frame, and the selector can control the switching terminal to enter the linear guiding groove or the arc guiding groove; the high-reflection metal film can perform specular reflection on light. In the present invention, the high-reflection metal film can switch back and forth between a flat reflecting surface and a parabolic mirror surface to meet different usage scenarios.

Description

Technical Field

[0001] The present invention relates to the technical field of light energy collectors, specifically a light chasing type light energy collector. Background Art

[0002] A light chasing type light energy collector is a device that can track the position of the sun and concentrate sunlight onto a point or a small area. In this way, it can effectively improve the capture efficiency of solar energy and thus be used for applications such as heating, heat supply, or power generation. Such a collector usually includes one or more reflectors and a collector, and the reflectors will adjust the angle according to the moving direction of the sun.

[0003] In the prior art, reflectors are generally divided into flat reflectors and parabolic mirrors. Among them, flat reflectors are suitable for scenarios where uniform light distribution is required, such as the use of photovoltaic panels, while parabolic mirrors are used for scenarios where light needs to be concentrated for heating. Currently, the reflectors in collectors are all independent and cannot adjust the reflection mode according to requirements, so they cannot be applied to different scenarios. Summary of the Invention

[0004] The present invention provides a light chasing type light energy collector, and the highly reflective metal film can switch back and forth between a flat reflection surface and a parabolic mirror surface to meet different usage scenarios.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A light chasing type light energy collector, comprising:

[0007] A frame and a first guiding bracket and a second guiding bracket on the inner wall thereof; a linear guiding groove is provided on the first guiding bracket, and an arc guiding groove is provided on the second guiding bracket; the inner wall of the frame is designed with an assembly cavity in a sealed state, and a roll-type highly reflective metal film is installed inside the assembly cavity. A switching terminal is installed at the free end of the highly reflective metal film, and the switching terminal can form a sliding connection relationship with the linear guiding groove or the arc guiding groove; a selector is installed on the inner wall of the frame, and the selector can control the switching terminal to enter the linear guiding groove or the arc guiding groove; the highly reflective metal film can perform specular reflection on light.

[0008] Optionally, the switching terminal includes an I-shaped slider slidably installed inside the guiding groove. Limiting sleeves are slidably sleeved on both sides of the I-shaped slider. A spring device is installed between the limiting sleeves and the I-shaped slider, and the spring device makes the two limiting sleeves fit tightly with the inner wall of the guiding groove. The free end of the highly reflective metal film is fixedly connected to the outer wall of the I-shaped slider;

[0009] Both the linear guiding groove and the arc guiding groove have open ends.

[0010] Optionally, a necking section is designed at the end of the stroke of both the linear guide groove and the arc guide groove, and the inner wall of the necking section is designed to be rough.

[0011] Optionally, a pulling rope is also installed at the free end of the highly reflective metal film. In the initial state, the pulling rope hangs inside the frame.

[0012] Optionally, two positioning seats are installed inside the assembly cavity. There is a slit between the two positioning seats, through which the highly reflective metal film can pass. Clean parts are pasted on the outer walls of the opposite faces of the two positioning seats, and the clean parts are made of flexible materials.

[0013] Optionally, the back of the highly reflective metal film is made of plastic magnetic material. A limiting plate is fixedly installed on the inner wall of the frame. The limiting plate is designed in an arc shape, and the curvature of the limiting plate is the same as that of the arc guide groove. A magnetic layer is provided on the arc-shaped outer wall of the limiting plate, and the magnetic layer attracts the back of the highly reflective metal film.

[0014] Optionally, a plurality of heat dissipation holes are provided on the limiting plate, and there is a gap between the arc top of the limiting plate and the inner wall of the frame. The outer wall of the frame is designed to be hollowed out.

[0015] Optionally, the reflective surface of the highly reflective metal film adopts an aluminum coating, and a transparent polyurethane coating is also coated outside the aluminum coating.

[0016] The beneficial effects achieved by the light-tracking type solar energy collector provided by the present invention are as follows:

[0017] The highly reflective metal film can be wound and unwound. When the switching terminal leads the free end of the highly reflective metal film into the linear guide groove, the highly reflective metal film will be pulled to a vertical state at this time, making the reflective surface of the highly reflective metal film flat. Similarly, when the switching terminal enters the arc guide groove, since the highly reflective metal film will also be restricted by the arc guide groove, and at the same time the highly reflective metal film itself can not only wind, but also maintain a certain arc angle, so that the highly reflective metal film can be used as a parabolic mirror. Therefore, the highly reflective metal film can switch back and forth between a flat reflective surface and a parabolic mirror to meet different usage scenarios. In addition, the light-tracking type solar energy collector of the present invention also has many beneficial technical effects, and the detailed situation will be further described in combination with the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the external three-dimensional structure schematic diagram of the present invention;

[0019] Figure 2 In the present invention Figure 1 is the left view structure schematic diagram;

[0020] Figure 3 This is a schematic structural view of the cross-section along A-A in the present invention; Figure 2

[0021] Figure 4 This is the present invention Figure 3 A schematic enlarged view of the structure at B in the present invention;

[0022] Figure 5 This is the present invention Figure 3 A schematic enlarged view of the structure at C in the present invention;

[0023] Figure 6 This is a schematic semi-sectional view of the three-dimensional structure of the present invention;

[0024] Figure 7 This is a schematic three-dimensional structure view of the selector in the present invention.

[0025] In the figure: 1, frame; 2, first guiding bracket; 3, second guiding bracket; 4, limiting plate; 5, functional turntable; 6, high-reflection metal film; 7, positioning seat; 8, cleaning part; 9, assembly cavity; 11, I-shaped sliding block; 12, limiting sleeve; 13, guiding groove; 14, necking section; 15, pulling rope. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] Please refer to Figures 1 to 7 , the present invention provides a technical solution: a light-tracking solar energy collector, including a frame 1, a first guiding bracket 2 and a second guiding bracket 3 on its inner wall;

[0029] ​A linear guide groove is provided on the first guide bracket 2, and an arc guide groove is provided on the second guide bracket 3; the inner wall of the frame 1 is designed with an assembly cavity 9 in a sealed state, and a coiled high-reflection metal film 6 is installed inside the assembly cavity 9. A switching terminal is installed at the free end of the high-reflection metal film 6, and the switching terminal can form a sliding connection relationship with the linear guide groove or the arc guide groove; a selector is installed on the inner wall of the frame 1, and the selector can control the switching terminal to enter the linear guide groove or the arc guide groove; the high-reflection metal film 6 can perform specular reflection on light.

[0030] In the prior art, when it is necessary to quickly build a collector in an emergency, by using the coiled high-reflection metal film 6, it can be quickly built and transported. Secondly, by unwinding the high-reflection metal film 6, a flat mirror surface or a parabolic mirror surface can be quickly formed to adapt to different scenarios.

[0031] Specifically, in the present invention, the high-reflection metal film 6 can be wound and unwound. When the switching terminal leads the free end of the high-reflection metal film 6 into the linear guide groove, at this time, the high-reflection metal film 6 will be pulled to a vertical state, making the reflection surface of the high-reflection metal film 6 a flat type. At this time, the high-reflection metal film 6 can be used as a reflection unit and put into the tower system to heat the heat transfer fluid molten salt, etc. of the collector tower. The high-reflection metal film 6 is used as a heliostat emission unit. Similarly, when the switching terminal enters the arc guide groove, since the high-reflection metal film 6 will also be restricted by the arc guide groove, and at the same time, the high-reflection metal film 6 itself not only has the ability to wind, but also can maintain a certain arc angle, so that the high-reflection metal film 6 can be used as a parabolic mirror for concentrating light. For example, in a parabolic trough CSP system, the energy of the sun is concentrated on the collector tube through a curved parabolic trough-shaped mirror surface, and then the thermal energy is used in the thermal system, and then the traditional steam turbine does work to generate electricity. The trough solar collector field includes a plurality of parabolic trough-shaped mirrors arranged in parallel, and these reflectors are arranged in a row so that these single-axis trough-shaped mirrors can track the sun from east to west during the day to ensure that the sun continuously focuses on the receiving tube.

[0032] Therefore, the high-reflection metal film 6 can switch back and forth between a flat reflection surface and a parabolic mirror surface to meet different usage scenarios.

[0033] In this embodiment, two switching terminals and selectors can be designed, such as Figure 7 , both are symmetrically designed, which can make the high-reflection metal film 6 more stable and maintain a better flat or arc groove posture. The collector tube and the light-tracking cloud platform are not shown in the present invention. The collector tube is used for heat absorption and heat conduction, and the light-tracking cloud platform is used for tracking the sun to obtain a better irradiation angle.

[0034] Among the more preferred embodiments, the selector includes a function turntable 5 rotatably mounted on the inner wall of the frame 1. A guiding groove 13 is formed on the function turntable 5, and the guiding groove 13 runs through the diameter line of the function turntable 5. When the function turntable 5 rotates, one end of the guiding groove 13 can be docked with a linear guiding groove or an arc guiding groove. In the initial state, the switching terminal is located on the inner wall of the guiding groove 13, and a sliding connection relationship is formed between the switching terminal and the guiding groove 13. The coiled high-reflection metal film 6 is located above the guiding groove 13, and the free end of the high-reflection metal film 6 enters the interior of the guiding groove 13. Please refer to Figures 3 to 7 , in this embodiment, the function turntable 5 exists as an intermediate structure. In the initial state, the free end of the high-reflection metal film 6 is also located inside the guiding groove 13. At this moment, when the function turntable 5 rotates, the guiding groove 13 can be docked with either the linear guiding groove or the arc guiding groove. After the docking is completed, the switching terminal can be driven to displace, so that it transfers from the guiding groove 13 to the linear guiding groove or the arc guiding groove. At this time, due to the sliding connection relationship between the guiding groove 13 and the linear guiding groove or the arc guiding groove, the switching terminal can drive the free end of the high-reflection metal film 6 to continue to displace, so that the reflecting surface of the high-reflection metal film 6 can form a flat mirror surface or a parabolic mirror surface.

[0035] Based on the selector embodiment as a preferred embodiment, the switching terminal includes a T-shaped slider 11 slidably mounted inside the guiding groove 13. Both sides of the T-shaped slider 11 are slidably sleeved with limiting sleeves 12. A spring device is installed between the limiting sleeves 12 and the T-shaped slider 11, and the spring device makes the two limiting sleeves 12 fit tightly with the inner wall of the guiding groove 13. The free end of the high-reflection metal film 6 is fixedly connected to the outer wall of the T-shaped slider 11; both the linear guiding groove and the arc guiding groove have open ends. Please refer to Figure 4 , in this embodiment, through the cooperation of the limiting sleeve 12, the T-shaped slider 11 and the guiding groove 13, the T-shaped slider 11 can stay stably in the guiding groove 13. Secondly, when the limiting sleeve 12 can enter the linear guiding groove or the arc guiding groove, the T-shaped slider 11 can also remain stable to prevent the high-reflection metal film 6 from shifting under the influence of external factors such as wind energy.

[0036] Based on the switching terminal embodiment as a preferred embodiment, necking sections 14 are designed at the end of the stroke of both the linear guiding groove and the arc guiding groove. The inner wall of the necking section 14 is designed to be rough. Please refer to Figure 5 , in this embodiment, when the limiting sleeve 12 and the T-shaped slider 11 enter the necking section 14, the two limiting sleeves 12 will move closer to the T-shaped slider 11, thereby compressing the spring device. Then, the outer walls of the two limiting sleeves 12 will fit with the inner wall of the linear guiding groove or the arc guiding groove. With the pressure of the spring device, the free end of the high-reflection metal film 6 can be locked.

[0037] As a preferred embodiment based on the switching terminal embodiment, a pull cord 15 is further installed at the free end of the highly reflective metal film 6. In the initial state, the pull cord 15 hangs inside the frame 1. When the free end or the switching terminal is inside the guiding groove 13, the highly reflective metal film 6 and the switching terminal can be displaced by pulling the pull cord 15 to complete the switching.

[0038] As a preferred embodiment based on the selector embodiment, two positioning seats 7 are installed inside the assembly cavity 9. There is a slit between the two positioning seats 7, and the slit allows the highly reflective metal film 6 to pass through. The cleaning parts 8 are pasted on the outer walls of the opposite surfaces of the two positioning seats 7. The cleaning parts 8 are made of flexible materials. Please refer to Figure 3 its enlarged detailed view. In this embodiment, since the highly reflective metal film 6 will be exposed to the air, during long-term use, the reflective surface of the highly reflective metal film 6 will be contaminated, thus affecting the reflection efficiency of the reflective surface. Therefore, it is necessary to protect the reflective surface of the highly reflective metal film 6. By designing the cooperation between the slit and the cleaning parts 8, the highly reflective metal film 6 can be flexibly cleaned by the cleaning parts 8 during the winding process, which not only protects the specular reflection performance of the highly reflective metal film 6, but also can handle dust and other pollutants, enabling the highly reflective metal film 6 to always maintain normal reflection performance.

[0039] In a more preferred embodiment, the back surface of the highly reflective metal film 6 is made of plastic magnetic material. The inner wall of the frame 1 is fixedly installed with a limiting plate 4. The limiting plate 4 is designed in an arc shape, and the curvature of the limiting plate 4 is the same as that of the arc-shaped guiding groove. The outer wall of the arc surface of the limiting plate 4 has a magnetic layer, and the magnetic layer attracts the back surface of the highly reflective metal film 6. In this embodiment, the back surface of the highly reflective metal film 6 is also called the base layer, which is used to support the reflective surface of the highly reflective metal film 6 and is usually made of plastic material. We can add magnetic powder to the components of the base layer to endow it with magnetism, so that the back surface of the highly reflective metal film 6 has magnetism and can be attracted to the magnetic layer. After the highly reflective metal film 6 is guided, it is in a parabolic mirror surface, and the curvature of the arc-shaped guiding groove is the same as that of the limiting plate 4, which can enable the limiting plate 4 to better fit with the highly reflective metal film 6.

[0040] Furthermore, a plurality of heat dissipation holes are provided on the limiting plate 4, and there is a gap between the arc top of the limiting plate 4 and the inner wall of the frame 1. The outer wall of the frame 1 is designed with a hollow structure. Please refer to Figure 1 and Figure 3, in this embodiment, when the reflecting surface of the high-reflection metal film 6 is in a flat mirror surface, there is a distance between the back surface of the high-reflection metal film 6 and the limiting plate 4 at this time, and the back surface of the high-reflection metal film 6 is exposed to the air, improving the heat dissipation capacity of the high-reflection metal film 6. When the high-reflection metal film 6 is in a parabolic mirror surface, the back surface of the high-reflection metal film 6 will fit on the arc-shaped outer wall of the limiting plate 4 at this time. At this time, the limiting plate 4 can shape the high-reflection metal film 6, making the mirror surface of the high-reflection metal film 6 more stable and suitable, but it reduces the heat dissipation capacity of the high-reflection metal film 6. The cooperation of the heat dissipation holes and the gaps can improve the heat dissipation capacity of the high-reflection metal film 6 in the parabolic mirror surface state and improve its thermal management performance.

[0041] Further as a preferred embodiment, the reflecting surface of the high-reflection metal film 6 is made of an aluminum coating, and a transparent polyurethane coating is also coated on the outside of the aluminum coating. In this embodiment, the aluminum coating is used because of its light material, which is convenient for transportation and assembly. At the same time, the reflectivity of the aluminum coating can reach more than 90%, which can effectively reflect visible light and infrared light. However, it may be oxidized when exposed to the air. Therefore, a transparent polyurethane coating is coated on the outside of the aluminum coating, which can not only provide protection for the aluminum coating, but also does not affect its winding ability, and at the same time does not affect the transmission of light and maintains the high-reflection performance of the aluminum coating.

[0042] With the cooperation of the above structures, the high-reflection metal film 6 can switch back and forth between a flat reflecting surface and a parabolic mirror surface to meet different usage scenarios.

[0043] The standard parts used in this embodiment can be directly purchased from the market. For the non-standard structural components described in the specification and drawings, they can also be directly processed according to the existing technical knowledge without any doubt. At the same time, the connection methods of each component adopt the mature conventional means in the existing technology, and the machines, parts and equipment all adopt the conventional models in the existing technology, so no specific description will be made here.

[0044] If the present invention discloses or involves mutually fixedly connected components or structural members, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, using bolts or screws), and can also be understood as: an inseparable fixed connection (for example, riveting, welding). Of course, the mutually fixed connection can also be replaced by an integral structure (for example, manufactured by integral forming using casting technology) (except when it is obviously impossible to adopt the integral forming process).

[0045] In addition, the terms used to represent the positional relationship or shape in any technical solution disclosed in the present invention described above, unless otherwise stated, include states or shapes similar, analogous or close to it.

[0046] Any component provided by the present invention can either be assembled from multiple separate components or be a single component manufactured by an integral forming process.

[0047] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Chasing light solar collector, characterized by: include: The frame (1) and a first guide bracket (2) and a second guide bracket (3) on the inner wall thereof; The first guide bracket (2) is provided with a linear guide groove, and the second guide bracket (3) is provided with an arc guide groove; The inner wall of the frame (1) is designed with a sealed assembly cavity (9), a coiled high-reflection metal film (6) is installed inside the assembly cavity (9), a switching terminal is installed at the free end of the high-reflection metal film (6), and the switching terminal can form a sliding connection relationship with the linear guide groove or the arc guide groove; A selector is installed on the inner wall of the frame (1), and the selector can control the switching terminal to enter the linear guide groove or the arc guide groove; The highly reflective metal film (6) is capable of specularly reflecting light; The selector comprises a function dial (5) rotatably mounted on the inner wall of the frame (1), the function dial (5) being provided with a guide groove (13), the guide groove (13) being arranged on the radial line of the function dial (5), and when the function dial (5) is rotated, one end of the guide groove (13) can be butted with a linear guide groove or an arc guide groove, the high-reflection metal film (6) is located above the guide groove (13), and the free end of the high-reflection metal film (6) enters the inside of the guide groove (13); the switching terminal comprises an I-shaped slider (11) slidably mounted inside the guide groove (13), both sides of the I-shaped slider (11) are slidably sleeved with limit sleeves (12), a spring device is installed between the limit sleeve (12) and the I-shaped slider (11), the spring device makes the two limit sleeves (12) fit tightly with the inner wall of the guide groove (13), and the free end of the high-reflection metal film (6) is fixedly connected to the outer wall of the I-shaped slider (11); The linear guide groove and the arc guide groove both have open ends.

2. The tracking light energy collector according to claim 1, characterized in that: The travel ends of the linear guide groove and the arc guide groove are both designed with a necking section (14), and the inner wall of the necking section (14) is of a rough design.

3. The tracking light energy collector according to claim 2, characterized in that: A pull rope (15) is also installed at the free end of the high-reflection metal film (6); in an initial state, the pull rope (15) hangs down inside the frame (1).

4. The tracking light energy collector according to claim 2, characterized in that: Two positioning seats (7) are installed inside the assembly cavity (9), and a slit is provided between the two positioning seats (7), wherein the slit allows the high-reflective metal film (6) to pass through, and a clean portion (8) is adhered to the outer walls of the opposite surfaces of the two positioning seats (7), and the clean portion (8) is made of a flexible material.

5. The tracking light energy collector according to claim 1, characterized in that: The back side of the highly reflective metal film (6) is made of a plastic magnetic material. A limit plate (4) is fixedly mounted on the inner wall of the frame (1). The limit plate (4) is designed to be arc-shaped, and the curvature of the limit plate (4) is consistent with the curvature of the arc guide groove. The arc-surface outer wall of the limit plate (4) has a magnetic layer, and the magnetic layer attracts the back side of the highly reflective metal film (6).

6. The tracking light energy collector according to claim 5, characterized in that: The limiting plate (4) is provided with a plurality of heat dissipation holes, and a gap is left between the arc top of the limiting plate (4) and the inner wall of the frame (1), and the outer wall of the frame (1) is hollowed out.

7. The tracking light energy collector according to any one of claims 1 to 6, characterized in that: The reflective surface of the high-reflective metal film (6) is coated with an aluminum coating, and the exterior of the aluminum coating is also coated with a transparent polyurethane coating.

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