Solar heat collector

Abstract

The utility model relates to the technical field of heat collectors, in particular to the technical field of solar heat collectors, which comprises a plurality of light-gathering and heat-collecting units and a mounting mechanism arranged at the bottom of the light-gathering and heat-collecting units, each light-gathering and heat-collecting unit comprises a CPC light-gathering plate and a vacuum glass heat-collecting tube arranged on the CPC light-gathering plate, the light-gathering and heat-collecting unit is arranged on the mounting mechanism in a relatively rotating manner through a fastener; the light condensation and heat collection unit of the device is arranged on the installation mechanism in a relative rotation mode through the fastener, so that the angle of the CPC light condensation plate can be adjusted at will; by arranging the longitudinal adjusting assembly and the transverse adjusting assembly, the position of the light-gathering and heat-collecting unit can be quickly adjusted, so that the light-gathering and heat-collecting unit adapts to the solar elevation angle and the position which change along with seasonal changes, and the light-gathering ratio and the utilization rate of solar energy are improved; by means of the bearing cross beams arranged on the two sides of the light-gathering heat-collecting unit, the vacuum glass heat-collecting tubes with different sizes and lengths can be installed, the installation structure is simple, and adjustment and disassembly are convenient.

Description

Technical Field

[0001] The utility model relates to a heat collection device, in particular to a solar collector. Background Art

[0002] Solar energy is a clean and pollution-free renewable energy source. Among them, the heat collection tube and the concentrator are key components in the solar thermal utilization system, mainly used to collect sunlight and convert it into heat energy, which can maximize the absorption of solar radiation and reduce heat loss at the same time to improve the solar energy utilization efficiency. Among them, the compound parabolic concentrator (abbreviated as CPC) is a non-imaging low-focus concentrator, which is designed according to the edge ray principle and can collect the incident light within a given acceptance angle range onto the heat collection tube according to the ideal concentration ratio. Due to its large acceptance angle, it does not require a solar tracking device during operation. Only by adjusting the inclination angle or position regularly every year according to the size of the acceptance angle and the number of hours of sunlight collection can it work effectively, and it can meet the requirements of medium and high temperature heat collection.

[0003] However, most of the existing CPC collectors adopt a fixed design, and their installation brackets do not support the adjustment of the angle, position, etc. of the collector. Given that the solar altitude angle changes with seasons, in order to improve the concentration ratio and utilization rate of solar energy, currently, CPC collector brackets with multiple reserved holes are introduced on the market. Users can disassemble and install different reserved holes according to seasons to adjust the tilt angle to fix the CPC collector. Compared with the fixed CPC collector, it can collect solar energy more effectively. However, the adjustability of this kind of bracket is limited, only providing some fixed adjustment angles and positions, lacking universality. When the installation location changes, it is necessary to redesign and manufacture the bracket to optimize the solar energy utilization rate of the CPC collector, which limits its application range and thus affects the wide promotion of the CPC solar collector and the efficient utilization of solar energy. Summary of the Utility Model

[0004] The utility model provides a solar collector that can solve the technical problems in the background art and overcome the disadvantages such as the inability to arbitrarily adjust the heat collection tube and the concentrator, inconvenient operation during installation, and cumbersome operation.

[0005] The technical solution of the utility model is: a solar collector, including a plurality of concentrating and heat collection units and an installation mechanism arranged at the bottom of the concentrating and heat collection units. The concentrating and heat collection units include CPC concentrating plates and vacuum glass heat collection tubes arranged on the CPC concentrating plates. The concentrating and heat collection units are relatively rotatably arranged on the installation mechanism through fasteners.

[0006] Further, the installation mechanism includes a supporting crossbeam, on which there are placement blocks for placing and positioning the vacuum glass heat collecting tube. The upper surface of the placement block is arc-shaped and conforms to the outer surface radian of the vacuum glass heat collecting tube, and the placement block and the vacuum glass heat collecting tube are connected and fixed by fasteners.

[0007] Further, the CPC concentrator has a positioning ring, which is arranged on the CPC concentrator and the vacuum glass heat collecting tube passes through the positioning ring. The positioning ring connects and fixes the vacuum glass heat collecting tube by fasteners.

[0008] Further, symmetrically arranged support feet are provided at the bottom of the positioning ring, and the support feet are provided with arc-shaped protrusions that conform to the inner radian of the CPC concentrator.

[0009] Further, a bottom fixing part for supporting and fixing the CPC concentrator is provided at the bottom of the CPC concentrator. The bottom fixing part is provided with an arc-shaped groove that conforms to the bottom radian of the CPC concentrator; the bottom fixing part is connected and fixed to the positioning ring arranged on the CPC concentrator by a connecting part.

[0010] Further, the concentrating and heat collecting unit is also provided with a fixing frame, and both sides of the fixing frame are connected and fixed to the CPC concentrator; the plurality of concentrating and heat collecting units are connected and fixed to the corresponding fixing frames by a top crossbeam.

[0011] Further, a lateral adjustment component and a longitudinal adjustment component are also included, and the concentrating and heat collecting unit is displaced and adjusted in position along the directions of the lateral adjustment component and the longitudinal adjustment component.

[0012] Further, the lateral adjustment component includes a lateral guide rail, a sliding adjustment block and a bolt. The sliding adjustment block is movably arranged in the lateral guide rail. The concentrating and heat collecting unit is arranged on the lateral guide rail, and the concentrating and heat collecting unit is connected to the sliding adjustment block by a bolt.

[0013] Further, the longitudinal adjustment component includes a longitudinal guide rail and a flat fixture. One end of the flat fixture is connected and fixed to the concentrating and heat collecting unit or the lateral adjustment component, and the other end of the flat fixture is slidably arranged on the longitudinal guide rail and slides and displaces along the direction of the longitudinal guide rail.

[0014] Further, silica gel protective sleeves are respectively provided at both ends of the vacuum glass heat collecting tube.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: 1. The concentrating and heat - collecting unit of this device is relatively rotatably arranged on the installation mechanism through the provided fasteners, enabling the CPC concentrating plate to be adjusted at any angle; 2. By providing a longitudinal adjustment component and a transverse adjustment component, the concentrating and heat - collecting unit can quickly adjust its longitudinal and transverse positions, thus adapting to the solar altitude angle and position that change with the seasons, and improving the concentrating ratio and utilization rate of solar energy; 3. Through the supporting cross - beams arranged on both sides of the concentrating and heat - collecting unit, it can adapt to the installation of vacuum glass heat - collecting tubes with different lengths and sizes, and the installation structure is simple, easy to adjust and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three - dimensional structural schematic diagram of the present utility model.

[0017] Figure 2 is an installation structural schematic diagram of the concentrating and heat - collecting unit and the supporting cross - beam in the present utility model.

[0018] Figure 3 is Figure 2 a partial enlarged schematic diagram of the position of "A" in

[0019] Figure 4 is a position schematic diagram of the concentrating and heat - collecting unit, the supporting cross - beam and the fasteners in the present utility model.

[0020] Figure 5 is a structural schematic diagram of the supporting cross - beam in the present utility model.

[0021] Figure 6 is a three - dimensional schematic diagram of the fixing ring in the present utility model.

[0022] Figure 7 is a connection structural schematic diagram of the CPC concentrating plate and the bottom fixing part in the present utility model.

[0023] Figure 8 is a partial schematic diagram of the longitudinal adjustment component and the transverse adjustment component in the present utility model.

[0024] Among them, 1. Concentrating and heat - collecting unit, 2. CPC concentrating plate, 3. Vacuum glass heat - collecting tube, 4. Supporting cross - beam, 5. Placing block, 6. Positioning ring, 7. Supporting foot, 8. Bottom fixing part, 9. Connecting piece, 10. Fixed frame, 11. Top cross - beam, 12. Transverse guide rail, 13. Sliding adjustment block, 14. Bolt, 15. Longitudinal guide rail, 16. Plane clamp, 17. Silicone protective sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The concept, specific structure and technical effects of the present utility model will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings, so as to fully understand the purpose, solution and effects of the present utility model. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0026] It should be noted that, unless otherwise specified, when a certain feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the descriptions such as up, down, left, right, top, bottom, etc. used in the present utility model are only relative to the mutual positional relationship of the components of the present utility model in the accompanying drawings.

[0027] In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this technology belongs. The terms used in the description of the present specification are only for describing specific embodiments, rather than for limiting the present utility model. The term "and / or" used herein includes any combination of one or more of the related listed items.

[0028] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various elements, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, without departing from the scope of the present disclosure, the first element may also be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0029] Please refer to the figure. The present utility model provides a solar collector, and the solar collector will be introduced in detail below in conjunction with the accompanying drawings.

[0030] Embodiment 1: As Figures 1 to 5As shown in the figure, a solar collector includes a supporting cross beam 4, a placing block 5, and a concentrating heat collection unit 1. The concentrating heat collection unit 1 includes a CPC concentrating plate 2, a vacuum glass heat pipe 3, fasteners. The fasteners are pipe clamps such as U-shaped Ohm clamps for connecting and fixing, a positioning ring 6, and an installation mechanism. The installation mechanism includes the supporting cross beam 4. There are two supporting cross beams 4, and the two supporting cross beams 4 are arranged opposite to each other left and right. The concentrating heat collection unit 1 is arranged between the two supporting cross beams 4. By means of the supporting cross beams 4 arranged on both sides of the concentrating heat collection unit 1, it is possible to adapt to the installation of vacuum glass heat pipes 3 of different sizes and lengths; a number of placing blocks 5 are evenly spaced and connected to the supporting cross beam 4. The vacuum glass heat pipe 3 is placed on the placing block 5. The concentrating heat collection unit 1 can rotate on the supporting cross beam 4, so as to adjust the angle of the CPC concentrating plate 2 facing the sun and improve the utilization rate of solar energy; and the vacuum glass heat pipe 3 is bundled on the placing block 5 by a U-shaped Ohm clamp. A number of positioning rings 6 are evenly spaced on the CPC concentrating plate 2. The vacuum glass heat pipe 3 passes through the fixing ring, and the bottom of the fixing ring is connected to the CPC concentrating plate 2.

[0031] Based on the above-mentioned Embodiment 1, as Figure 3 with Figure 6 shown in the figure, the CPC concentrating plate 2 is composed of a combination of two parabolic surfaces and involute surfaces with arcs. The bottom of the positioning ring 6 is symmetrically provided with supporting feet 7. The supporting feet 7 are provided with arc-shaped protrusions that fit the arc inside the CPC concentrating plate 2. Through the arc-shaped protrusions, the positioning ring 6 can be quickly positioned on the center line of the CPC concentrating plate 2, so as to ensure that the vacuum glass heat pipe 3 can be installed on the center line of the CPC concentration.

[0032] Embodiment 2: As Figure 7 shown in the figure, the bottom of the CPC concentrating plate 2 is provided with a bottom fixing part 8 for supporting and fixing the CPC concentrating plate 2. The bottom fixing part 8 is provided with an arc-shaped groove that fits the bottom arc of the CPC concentrating plate 2. Through the bottom fixing part 8, the deformation of the CPC concentrating plate 2 is avoided, which affects the reflection of sunlight; the bottom fixing part 8 is connected and fixed to the positioning ring 6 arranged on the CPC concentrating plate 2 through a connecting part 9.

[0033] Embodiment 3: As Figure 2 with Figure 3 shown in the figure, the concentrating heat collection unit 1 is further provided with a fixed frame 10. The two sides of the fixed frame 10 are connected and fixed to the CPC concentrating plate 2; when there are a number of concentrating heat collection units 1, the concentrating heat collection units 1 are connected and fixed to each other through a top cross beam 11 and the corresponding fixed frames 10 on the concentrating heat collection units 1.

[0034] Embodiment 4: As Figure 1 with Figure 8As shown in the figure, a solar collector is further provided with a lateral adjustment assembly and a longitudinal adjustment assembly. The concentrating and heat-collecting unit 1 adjusts its position by displacement along the directions of the lateral adjustment assembly and the longitudinal adjustment assembly. The lateral adjustment assembly includes a lateral guide rail 12, a sliding adjustment block 13, and a bolt 14. The sliding adjustment block 13 is movably arranged in the lateral guide rail 12. The concentrating and heat-collecting unit 1 is arranged on the lateral guide rail 12, and the concentrating and heat-collecting unit 1 is connected to the sliding adjustment block 13 through the bolt 14.

[0035] Embodiment 5: As Figure 1 With Figure 8 As shown in the figure, a solar collector is further provided with a lateral adjustment assembly and a longitudinal adjustment assembly. The concentrating and heat-collecting unit 1 adjusts its position by displacement along the directions of the lateral adjustment assembly and the longitudinal adjustment assembly. The longitudinal adjustment assembly includes a longitudinal guide rail 15 and a flat fixture 16. One end of the flat fixture 16 is fixedly connected to the concentrating and heat-collecting unit 1 or the lateral adjustment assembly, and the other end of the flat fixture 16 is slidably arranged on the longitudinal guide rail 15 and slides along the direction of the longitudinal guide rail 15.

[0036] A double-layer glass tube is provided inside the vacuum glass heat pipe 3. The inner glass tube is coated with a selective absorption coating as a heat absorber, which can effectively absorb sunlight and increase the optical efficiency of the heat pipe. The inner glass tube of this device is provided with a working medium flow channel, and the working medium flow channel is closely attached to the inner glass tube, thereby reducing the thermal resistance; a vacuum is drawn between the inner glass tube and the outer glass tube, so as to effectively prevent heat from being dissipated by convection; when sunlight shines or is reflected by the CPC concentrating plate 2 onto the selective absorption coating, heat is generated and transferred to the working medium flow channel. After the working medium flow channel obtains heat, it heats the heat-collecting medium in the working medium flow channel. The heat-collecting medium is generally kerosene.

[0037] Among them, as Figure 3 As shown in the figure, in order to further protect the vacuum glass heat pipe 3, silica gel protective sleeves 17 are respectively provided at both ends of the vacuum glass heat pipe 3. The vacuum glass heat pipe 3 is insulated and protected from ultraviolet rays through the silica gel protective sleeves 17, so that the vacuum glass heat pipe 3 can withstand high temperatures.

[0038] Installation and working principle: For the installation of the concentrating heat collection unit 1, the concentrating heat collection unit 1 is installed at the usage location such as the roof through the longitudinal guide rail. First, the concentrating heat collection unit 1 is installed on the supporting cross beam 4, and the supporting cross beam 4 is arranged on the transverse guide rail 12. By loosening the bolt 14 and the sliding adjustment block 13, the supporting cross beam can slide on the transverse guide rail 12 to adjust the lateral position of the concentrating heat collection unit 1. After adjusting the position, tighten the bolt 14 so that the sliding adjustment block 13 and the supporting cross beam 4 cooperate with each other to clamp and fix the transverse guide rail 12, thereby installing and fixing the concentrating heat collection unit 1 on the transverse guide rail 12; the transverse guide rail 12 is arranged on the longitudinal guide rail, and the flat fixture 16 clamps on the longitudinal guide rail. When the flat fixture 16 is loosened, the transverse guide rail 12 can slide on the longitudinal guide rail to adjust the longitudinal position of the concentrating heat collection unit 1. After adjusting the position of the heat collection tube body, clamp and fix the flat fixture 16 on the longitudinal guide rail, thereby installing and fixing the concentrating heat collection unit 1 on the longitudinal guide rail; at the same time, by placing the vacuum glass heat collection tube 3 on the placing block 5 and rotating it, it is convenient to adjust the angle of the CPC concentrating plate 2 so that sunlight shines on the CPC concentrating plate 2. The CPC concentrating plate 2 reflects the light onto the vacuum glass heat collection tube 3, and the vacuum glass heat collection tube 3 converts solar energy into heat energy. The bottom fixing member 8 can support the CPC concentrating plate 2 to prevent the CPC concentrating plate 2 from deforming.

[0039] The above description is only the preferred embodiment of the present invention. The present invention is not limited to the above implementation manners. As long as it achieves the technical effects of the present invention by the same means, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present disclosure shall be included within the protection scope of the present disclosure. All of them shall belong to the protection scope of the present invention. Within the protection scope of the present invention, various modifications and changes can be made to its technical solutions and / or implementation manners.

Claims

1. A solar thermal collector, characterized in that: The invention comprises a plurality of concentrating and heat collecting units (1) and a mounting mechanism arranged at the bottom of the concentrating and heat collecting units (1), wherein the concentrating and heat collecting units (1) comprise a CPC concentrating plate (2) and a vacuum glass heat collecting tube (3) arranged on the CPC concentrating plate (2), and the concentrating and heat collecting units (1) are relatively rotatably arranged on the mounting mechanism by means of fasteners; the mounting mechanism comprises a supporting crossbeam (4), and a placement block (5) for placing and positioning the vacuum glass heat collecting tube (3) is arranged on the supporting crossbeam (4), the upper surface of the placement block (5) is arc-shaped and fits the arc of the outer surface of the vacuum glass heat collecting tube (3), and the placement block (5) and the vacuum glass heat collecting tube (3) are connected and fixed by fasteners.

2. A solar thermal collector according to claim 1, characterized in that: The CPC concentrator plate (2) is provided with a positioning ring (6), the positioning ring (6) is arranged on the CPC concentrator plate (2) and the vacuum glass heat collecting tube (3) is inserted into the positioning ring (6), and the positioning ring (6) is connected and fixed to the vacuum glass heat collecting tube (3) by means of a fastener.

3. A solar thermal collector according to claim 2, characterized in that: Support feet (7) are symmetrically provided at the bottom of the positioning ring (6), and the support feet (7) are provided with arc-shaped protrusions that fit the curvature of the inner side of the CPC concentrating plate (2).

4. A solar thermal collector according to claim 2, characterized in that: The bottom of the CPC concentrator plate (2) is provided with a bottom fixing member (8) for supporting and fixing the CPC concentrator plate (2); the bottom fixing member (8) is provided with an arc-shaped groove that fits the curvature of the bottom of the CPC concentrator plate (2); the bottom fixing member (8) is connected and fixed to a positioning ring (6) provided on the CPC concentrator plate (2) via a connecting member (9).

5. A solar thermal collector according to claim 1, characterized in that: The concentrating and heat collecting unit (1) is further provided with a fixed frame (10), and two sides of the fixed frame (10) are connected and fixed to the CPC concentrating plate (2); the plurality of concentrating and heat collecting units (1) are connected and fixed to corresponding fixed frames (10) via top crossbeams (11).

6. A solar thermal collector according to claim 1, characterized in that: It also comprises a transverse adjustment component and a longitudinal adjustment component, and the light-collecting and heat-collecting unit (1) is displaced and adjusted in the direction of the transverse adjustment component and the longitudinal adjustment component.

7. A solar thermal collector according to claim 6, characterized in that: The transverse adjustment assembly comprises a transverse guide rail (12), a sliding adjustment block (13) and a bolt (14); the sliding adjustment block (13) is movably arranged in the transverse guide rail (12); the concentrating and heat collecting unit (1) is arranged on the transverse guide rail (12); and the concentrating and heat collecting unit (1) is connected to the sliding adjustment block (13) via the bolt (14).

8. A solar thermal collector according to claim 6, characterized in that: The longitudinal adjustment assembly comprises a longitudinal guide rail (15) and a planar clamp (16); one end of the planar clamp (16) is connected and fixed to the light-collecting and heat-collecting unit (1) or the transverse adjustment assembly; the other end of the planar clamp (16) is slidably disposed on the longitudinal guide rail (15) and slidably displaced in the direction of the longitudinal guide rail (15).

9. A solar thermal collector according to claim 1, characterized in that: Both ends of the vacuum glass heat collection tube (3) are respectively provided with silicone protective sleeves (17).

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