Heat collection device
Through the design of rotating bracket and arc-shaped slide rail, combined with primary and secondary reflectors, the problem of uneven heat receiving of the heat collector pipe is solved, efficient solar energy collection and thermal energy conversion are achieved, and the overall performance and stability of the heat collector device are improved.
Patent Information
- Application Number
- CN202422338857.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-25
AI Technical Summary
In the existing solar heat collecting devices, the heat receiving distribution of the heat collecting pipes is uneven, which affects the heat absorption effect and service life.
The rotary bracket and arc-shaped slide rail design are designed, combining primary and secondary mirrors. The heat collector tube is located on the focus line of the primary condenser surface and the axis of the arc-shaped slide rail. The secondary reflector is designed above the heat collector tube. The angle is adjusted by the rotary bracket to ensure that the light is accurately reflected on the heat collector tube.
It improves the collection efficiency of solar energy and the conversion efficiency of thermal energy, enhances the scope of application and energy utilization of the device, reduces wind resistance, improves the stability and safety of the structure, and extends the service life of the heat collector pipe.
Smart Images
Figure CN223121699U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat collection equipment, and particularly relates to a heat collection device. Background Art
[0002] With the growth of the global demand for renewable energy, solar energy, as a clean and renewable energy source, has received extensive attention. Especially in the field of solar thermal utilization, the technology of converting solar radiant energy into heat energy through heat collection devices has developed rapidly. One of the core components of the heat collection device is the reflector system, which can effectively collect and concentrate sunlight, thereby improving the heat collection efficiency.
[0003] Existing solar heat collection devices usually include a primary reflector (i.e., a concentrator) and a secondary reflector. The primary reflector focuses sunlight on the heat collection tube, while the secondary reflector refocuses the light leaked from the primary reflection onto the heat collection tube to ensure that as much energy as possible is absorbed. In the existing secondary reflector in a trough-type collector, the positions of the primary reflector and the secondary reflector are usually relatively fixed with respect to the heat collection tube. Although this design simplifies the structure of the collector, since the focus points of the primary reflector and the secondary reflector are quite long-term fixed on the heat collection tube, the heat distribution on the heat collection tube is uneven, which in turn affects the heat absorption effect and service life. Summary of the Utility Model
[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a heat collection device, which can improve the heating uniformity of the heat collection tube and enhance the thermal energy conversion efficiency.
[0005] A heat collection device according to an embodiment of the first aspect of the utility model includes: a rotating bracket, on which a concentrator support plate is provided, and a plurality of concentrators are mounted on the surface of the concentrator support plate to form a primary concentrating surface;
[0006] A base, disposed below the rotating bracket, one of the rotating bracket and the base is provided with an arc-shaped slide rail, and the other is provided with a slider cooperating with the arc-shaped slide rail, and the base is provided with a drive assembly to drive the rotating bracket to rotate along the arc-shaped slide rail;
[0007] A heat collection tube assembly, including a heat collection tube, a mounting frame and a secondary reflector, the heat collection tube is disposed above the concentrator support plate, the heat collection tube is located on the focusing line of the primary concentrating surface and at the same time on the axis of the arc-shaped slide rail, the mounting frame is fixed to the concentrator support plate, and the secondary reflector cover is fixed to one end of the mounting frame away from the concentrator support plate and is located above the heat collection tube.
[0008] A heat collection device according to an embodiment of the present utility model has at least the following beneficial effects: By installing a plurality of condenser lenses on the condenser lens support plate of the rotating bracket to form a primary condenser lens surface, the sun's rays can be effectively concentrated onto the heat collection tube, improving the solar energy collection efficiency. This design can not only capture direct sunlight but also utilize scattered light, enhancing the device's application range and energy utilization rate; The mounting bracket in the heat collection tube assembly not only fixes the heat collection tube but also further enhances the condensing effect through the secondary reflector fixed on the mounting bracket. The heat collection tube is located on the focal line of the primary condenser lens surface and the axis of the arc-shaped slide rail, ensuring optimal condensing performance. At the same time, this layout is also beneficial for reducing wind resistance and improving the stability of the overall structure; The design of the secondary reflector, especially at the position above the heat collection tube, can reflect the light that does not directly irradiate the heat collection tube again, increasing the energy absorbed by the heat collection tube and improving the energy conversion efficiency of the entire system.
[0009] According to some embodiments of the present utility model, a bearing is provided at one end of the mounting bracket away from the condenser lens support plate, the heat collection tube passes through the bearing, and the secondary reflector is installed on the mounting bracket. As the rotating bracket and the heat collection tube adjust their angles, the secondary reflector can also change its position accordingly, ensuring that the light can always be accurately reflected onto the heat collection tube, further enhancing the condensing effect and improving the heat collection efficiency. When the rotating bracket rotates, the heat collection tube can also be fixed. Therefore, the two ends of the heat collection tube can be directly connected with hard tubes instead of using flexible hoses, making the system safer.
[0010] According to some embodiments of the present utility model, the bearing is one of a special engineering plastic bearing, a ceramic bearing, or a stainless steel bearing. It has good high-temperature resistance and can maintain stable physical and chemical properties in a high-temperature environment, ensuring that the bearing can still operate normally when the heat collection tube expands due to heat, improving the thermal stability of the system.
[0011] According to some embodiments of the present utility model, the secondary reflector is a curved mirror. The curved mirror can more effectively focus the sunlight onto the heat collection tube. Compared with a flat mirror, the curved mirror can better converge the light, improve the heating efficiency of the heat collection tube, and thus enhance the overall heat collection performance of the system.
[0012] According to some embodiments of the present utility model, the heat collection tube is located on the axis of the secondary reflector and on the focal line of the secondary reflector at the same time. This minimizes the loss of light, improves the condensing efficiency, and thus enhances the overall energy conversion rate of the heat collection device.
[0013] According to some embodiments of the present utility model, the secondary reflector is a concave mirror. The concave mirror can enable the secondary reflector to provide uniform light intensity to the heat collecting tube at different time periods, avoiding the uneven heat collection phenomenon caused by the change of the light angle.
[0014] According to some embodiments of the present utility model, a reinforcing rib is provided between the arc-shaped slide rail and the rotating bracket, one end of the reinforcing rib abuts against the arc-shaped slide rail, and the other end abuts against the rotating bracket. The heat collection device is usually installed outdoors and needs to withstand the influence of various weather conditions. The design of the reinforcing rib can enhance the overall rigidity of the device, improve its wind resistance, reduce the vibration and displacement caused by the wind force, and ensure the safety and stability of the device.
[0015] According to some embodiments of the present utility model, the reflecting end of the secondary reflector is arranged towards the heat collecting tube to form a secondary concentrating mirror surface. The reflecting end of the secondary reflector is arranged towards the heat collecting tube, which can reflect the light that the primary concentrating mirror surface fails to directly irradiate onto the heat collecting tube onto the heat collecting tube again, forming a secondary concentrating mirror surface. This significantly enhances the concentrating effect, improves the heat absorption efficiency of the heat collecting tube, and thus improves the energy conversion rate of the entire heat collection device.
[0016] According to some embodiments of the present utility model, the secondary reflector is a mirror aluminum plate or a mirror stainless steel plate. The surfaces of these two materials are smooth, not easy to accumulate dust, easy to clean, reducing the maintenance workload and ensuring the continuous and efficient operation of the reflector.
[0017] According to some embodiments of the present utility model, a heat insulation layer is provided on the side of the secondary reflector away from the heat collecting tube. It can effectively prevent the heat from dissipating from the reflector to the external environment, thereby improving the thermal energy utilization rate of the system and enhancing the heat collection efficiency.
[0018] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The following further describes the present utility model in conjunction with the drawings and embodiments, where:
[0020] Figure 1 is one of the schematic diagrams of a heat collection device according to an embodiment of the present utility model;
[0021] Figure 2 is the second schematic diagram of a heat collection device according to an embodiment of the present utility model;
[0022] Figure 3 is the schematic diagram of a heat collecting tube assembly according to an embodiment of the present utility model.
[0023] Reference numerals: rotating bracket 100; base 110; heat collecting tube assembly 120; arc-shaped slide rail 130; condenser support plate 140; condenser 150; secondary reflector 160; mounting bracket 170; heat collecting tube 180; bearing 190; reinforcing rib 200. Detailed implementation manners
[0024] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.
[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.
[0026] In the description of the present invention, the meaning of "a number of" is one or more, the meaning of "a plurality of" is two or more, "greater than", "less than", "exceeding", etc. are understood as not including the present number, and "above", "below", "within", etc. are understood as including the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.
[0027] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution. In the description of the present utility model, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0028] Referring to Figures 1 to 3 , a heat collection device, comprising: a rotating bracket 100, the rotating bracket 100 is provided with a condenser lens support plate 140, and a plurality of condenser lenses 150 are mounted on the surface of the condenser lens support plate 140 to form a primary condenser lens surface;
[0029] a base 110, arranged below the rotating bracket 100, one of the rotating bracket 100 and the base 110 is provided with an arc-shaped slide rail 130, and the other is provided with a slider cooperating with the arc-shaped slide rail 130, and the base 110 is provided with a driver assembly to drive the rotating bracket 100 to rotate along the arc-shaped slide rail 130;
[0030] a heat collection tube assembly 120, comprising a heat collection tube 180, a mounting bracket 170 and a secondary reflector 160, the heat collection tube 180 is arranged above the condenser lens support plate 140, the heat collection tube 180 is arranged on the focal line of the primary condenser lens surface and located on the axis of the arc-shaped slide rail 130 at the same time, the mounting bracket 170 is fixed to the condenser lens support plate 140, the secondary reflector 160 cover is fixed to one end of the mounting bracket 170 away from the condenser lens support plate 140 and located above the heat collection tube 180. In some preferred embodiments, the mounting bracket 170 is fixed to the central beam of the condenser lens support plate 140, and a plurality of quick-installation and quick-disassembly mounting parts are arranged on the central beam to realize the quick installation and disassembly of the mounting bracket. The mounting bracket 170 and the central beam can be pre-assembled together in the factory, thereby reducing the on-site construction time.
[0031] By installing a plurality of condenser lenses 150 on the condenser lens support plate 140 of the rotating bracket 100 to form a primary condenser mirror surface, the sun's rays can be effectively concentrated onto the heat collecting pipe 180, improving the solar energy collection efficiency. This design can not only capture direct sunlight but also utilize scattered light, enhancing the device's application range and energy utilization rate. The mounting bracket 170 in the heat collecting pipe assembly 120 not only fixes the heat collecting pipe 180 but also further enhances the condensing effect through the secondary reflector 160 fixed on the mounting bracket 170. The heat collecting pipe 180 is located on the focal line of the primary condenser mirror surface and the axis of the arc-shaped sliding rail 130, ensuring optimal condensing performance. At the same time, this layout is also conducive to reducing wind resistance and improving the stability of the overall structure. The design of the secondary reflector 160, especially its position above the heat collecting pipe 180, can reflect the light that does not directly irradiate the heat collecting pipe 180 again, increasing the energy absorbed by the heat collecting pipe 180 and improving the energy conversion efficiency of the entire system.
[0032] It can be understood that the drive assembly is placed below the condenser, not occupying the sunlight irradiation area alone. This design enables the drive assembly not to block the direct sunlight irradiation, thereby improving the utilization rate of the land area. Under the condition of limited land resources, more heat collecting devices can be arranged, improving the land output efficiency per unit area. The drive system uses a motor drive, not a hydraulic system, but a pure mechanical structure. Such a design not only simplifies the overall structure of the system, reduces the complex components in the system, lowers the failure rate of the system, but also improves the reliability and stability of the system. The pure mechanical structure design makes the drive assembly more compact, facilitating installation and maintenance, and reducing the installation time and the workload of later maintenance.
[0033] A bearing 190 is provided at one end of the mounting bracket 170 away from the condenser lens support plate 140. The heat collecting pipe 180 passes through the bearing 190, and the secondary reflector 160 is installed on the mounting bracket 170. As the mounting bracket 170 adjusts the angle with the rotating bracket 100 and the heat collecting pipe 180, the secondary reflector 160 can also change its position accordingly, ensuring that the light can always be accurately reflected onto the heat collecting pipe 180, further enhancing the condensing effect and improving the heat collection efficiency. When the rotating bracket 100 rotates, the heat collecting pipe 180 can also be fixed. Therefore, the two ends of the heat collecting pipe 180 can be directly connected with hard pipes instead of using flexible hoses, making the system safer.
[0034] The bearing 190 is one of a special engineering plastic bearing 190, a ceramic bearing 190, or a stainless steel bearing 190. It has good high-temperature resistance and can maintain stable physical and chemical properties in a high-temperature environment, ensuring that when the heat collecting pipe 180 expands due to heat, the bearing 190 can still operate normally, improving the thermal stability of the system.
[0035] The secondary reflector 160 is a curved mirror. The curved mirror can more effectively focus sunlight onto the heat collection tube 180. Compared with a plane mirror, the curved mirror can better converge light, improve the heating efficiency of the heat collection tube 180, and thus enhance the overall heat collection performance of the system.
[0036] The heat collection tube 180 is located on the axis of the secondary reflector 160 and at the same time on the focal line of the secondary reflector 160. This minimizes the loss of light, improves the light concentration efficiency, and thus enhances the overall energy conversion rate of the heat collection device.
[0037] The secondary reflector 160 is a concave mirror. The concave mirror can improve the light concentration effect and at the same time avoid the uneven heating of the heat collection tube caused by the change of the illumination angle.
[0038] Reinforcing ribs 200 are provided between the arc-shaped slide rail 130 and the rotating bracket 100. One end of the reinforcing rib 200 abuts against the arc-shaped slide rail 130, and the other end abuts against the rotating bracket 100. The heat collection device is usually installed outdoors and needs to withstand the influence of various weather conditions. The design of the reinforcing rib 200 can enhance the overall rigidity of the device, improve its wind resistance, reduce the vibration and displacement caused by the wind, and ensure the safety and stability of the device.
[0039] The reflecting end of the secondary reflector 160 is arranged facing the heat collection tube 180, and can reflect the light leaking from the primary concentrating mirror surface back to the heat collection tube 180 again to form secondary focusing. This significantly enhances the light concentration effect and thus improves the energy conversion rate of the entire heat collection device.
[0040] The secondary reflector 160 is made of an aluminum plate mirror surface, a stainless steel plate mirror surface or other mirror materials. These materials have a smooth surface, are not easy to accumulate dust, are easy to clean, reduce the maintenance workload, and ensure the continuous and efficient operation of the reflector. In this embodiment, the secondary reflector 160 is supported by materials such as high-temperature-resistant stainless steel or aluminum. An insulating layer is provided on the side of the secondary reflector 160 away from the heat collection tube 180. It can effectively prevent heat from dissipating from the reflector to the external environment, thus improving the thermal energy utilization rate of the system and enhancing the heat collection efficiency.
[0041] Refer to Figures 1 to 3, this embodiment provides an efficient heat collection device, whose main components include a rotating bracket 100, a base 110, a condenser lens support plate 140, a heat collection tube assembly 120, and a secondary reflector 160. The rotating bracket 100 is the main support structure of the entire heat collection device, on which the condenser lens support plate 140 is provided. A plurality of condenser lenses 150 are installed on the surface of the condenser lens support plate 140, and these condenser lenses 150 together form a primary condenser lens surface for concentrating sunlight. The condenser lens support plate 140 is fixed on the rotating bracket 100, and a plurality of condenser lenses 150 are evenly distributed on its surface. The size and angle of each condenser lens 150 are precisely calculated to ensure that sunlight can be effectively concentrated on the heat collection tube 180.
[0042] The base 110 is arranged below the rotating bracket 100 for supporting the entire device. A driving component is provided on the base 110 for driving the rotating bracket 100 to rotate along the arc-shaped slide rail 130. An arc-shaped slide rail 130 and a slider are arranged between the rotating bracket 100 and the base 110. An arc-shaped slide rail 130 is provided on one of the components, and a slider cooperating with it is provided on the other component. The driving component realizes the angle adjustment of the rotating bracket 100 by controlling the movement of the slider on the arc-shaped slide rail 130. The driving component includes a motor and a control system, which can automatically adjust the angle of the rotating bracket 100 according to the position of the sun to ensure that the heat collection device is always in the best light-concentrating state.
[0043] The heat collection tube 180 is arranged above the condenser lens support plate 140, located on the focal line of the primary condenser lens surface, and also on the axis of the arc-shaped slide rail 130. The heat collection tube 180 is used to absorb the sunlight reflected by the condenser lens 150 and convert it into heat energy. The mounting bracket 170 is fixed on the condenser lens support plate 140 for supporting and fixing the heat collection tube 180. A bearing 190 is provided at one end of the mounting bracket 170 away from the condenser lens support plate 140, and the heat collection tube 180 passes through the bearing 190 to ensure the stability and flexibility of the heat collection tube 180. The secondary reflector 160 is installed on the mounting bracket 170 and is located above the heat collection tube 180. The reflecting end of the secondary reflector 160 is arranged towards the heat collection tube 180 to form a secondary condenser lens surface, further improving the light-concentrating effect.
[0044] When the heat collection device works, sunlight is concentrated on the heat collection tube 180 through the reflection of the primary condenser lens surface, and the leaked light is reflected by the secondary reflector 160 and converges on the heat collection tube 180 again, further improving the light-concentrating effect. Through the double light-concentrating design of the primary condenser lens surface and the secondary reflector 160, the light-concentrating effect is significantly improved, and the heat absorption efficiency of the heat collection tube 180 is improved. The design of the secondary reflector 160 makes the distribution of light on the heat collection tube 180 more uniform, avoiding problems such as local overheating or uneven heating and cooling, and improving the working efficiency and service life of the heat collection tube 180.
[0045] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those of ordinary skill in the relevant art.
Claims
1. A heat collection device, characterized in that, Comprising: A rotating bracket, on which a condenser lens support plate is provided, and a plurality of condenser lenses are mounted on the surface of the condenser lens support plate to form a primary condenser lens surface; A base, arranged below the rotating bracket, one of the rotating bracket and the base is provided with an arc-shaped slide rail, and the other is provided with a slider cooperating with the arc-shaped slide rail, and the base is provided with a driver assembly to drive the rotating bracket to rotate along the arc-shaped slide rail; A heat collecting tube assembly, including a heat collecting tube, a mounting frame and a secondary reflector, the heat collecting tube is arranged above the condenser lens support plate, the heat collecting tube is arranged on the focus line of the primary condenser lens surface and is located on the axis of the arc-shaped slide rail at the same time, the mounting frame is fixed to the condenser lens support plate, and the secondary reflector cover is fixed to one end of the mounting frame away from the condenser lens support plate and is located above the heat collecting tube.
2. The heat collection device according to claim 1, wherein, A bearing is provided at one end of the mounting frame away from the condenser lens support plate, the heat collecting tube passes through the bearing, and the secondary reflector is mounted on the mounting frame.
3. The solar collector device according to claim 2, wherein, The bearing is one of a special engineering plastic bearing, a ceramic bearing or a stainless steel bearing.
4. The heat collection device according to claim 1, characterized in that, The secondary reflector is a curved mirror.
5. A heat collection device according to claim 4, wherein, The heat collecting tube is located at the axis of the secondary reflector and is located on the focus line of the secondary reflector at the same time.
6. The solar collector device according to claim 1, wherein The secondary reflector is a concave mirror.
7. The heat collection device according to claim 1, characterized in that, A reinforcing rib is arranged between the arc-shaped slide rail and the rotating bracket, one end of the reinforcing rib abuts against the arc-shaped slide rail, and the other end abuts against the rotating bracket.
8. A heat collection device according to claim 1, characterized in that, The reflecting end of the secondary reflector is arranged towards the heat collecting tube to form a secondary condenser lens surface.
9. A heat collection device according to claim 1, characterized in that, The secondary reflector is a mirror aluminum plate or a mirror stainless steel plate.
10. A heat collection device according to claim 1, characterized in that, A heat insulation layer is arranged on the side of the secondary reflector away from the heat collecting tube.