Solar light condensation and heat collection device

Abstract

The utility model discloses a solar concentrating and heat collecting device which comprises a support assembly, a heat collecting pipe is arranged on the support assembly, a U-shaped medium pipeline is arranged in the heat collecting pipe, the support assembly comprises an inclined support A located on the inner side of the support assembly, an inclined support B located on the outer side of the support assembly and a support, and a fixed included angle is formed between the heat collecting pipe and the horizontal plane. The support is provided with a reflector fixing support with an adjustable angle, the reflector fixing support is provided with a reflector, a reflector tracking drive is arranged below the reflector fixing support, and a tracking controller is arranged in the support assembly; scattered land arrangement can be utilized, the mode is flexible, single operation or series-parallel operation of a plurality of heat collection devices can be achieved, the heat collection pipes are all-glass vacuum solar heat collection pipes, and the cost is low compared with metal straight-through vacuum pipes used in a groove type or Fresnel mode. And the problem of high-temperature and high-pressure pipeline sealing and connection loosening caused by tracking motion of the reflecting mirror can be avoided, and the operation stability of the system is improved.

Description

Technical Field

[0001] The utility model relates to a solar concentrating and heat collecting device, belonging to the field of solar thermal utilization. Background Technique

[0002] At present, efforts are being made to control the use of raw coal and promote clean and renewable energy. As an inexhaustible clean energy source, solar energy can be used for clean solar heating, providing industrial steam, solar thermal power generation, seawater desalination and other applications, and is attracting increasing attention from society. At present, the main forms of solar thermal utilization include all-glass evacuated tube solar energy, flat-plate solar energy, trough solar energy, dish solar energy, Fresnel solar energy, tower solar energy, etc.

[0003] All-glass evacuated tube solar energy and flat-plate solar energy belong to the low-temperature application field, with low heat collection temperature, low efficiency and unreliable systems, and cannot achieve medium- and high-temperature thermal utilization such as heating and steam supply; trough solar energy has high requirements for the site, single-axis tracking and high accuracy requirements, low efficiency, and the concentrated light energy is focused below the collector tube near the reflector, so the local part of the collector tube is easily bent and deformed, with low heat conduction efficiency, many welded joints of the collector tube and serious heat dissipation, and the collector tube moving with the reflector tracking is likely to cause problems such as poor pipeline sealing and loose connection; dish solar energy has a high concentration ratio and high temperature, but the heat absorber is not easy to be made into a vacuum, with large heat loss, and the production of the hyperbolic reflector surface is difficult and costly; Fresnel solar energy has a low heat collection temperature, requires a secondary reflector surface, and has large heat loss; tower solar energy is suitable for large-scale application scenarios, with high costs and low efficiency for small-scale applications. Content of the Utility Model

[0004] The utility model provides a solar concentrating and heat collecting device to overcome the defects that the all-glass evacuated tube collector and flat-plate solar energy in the prior art are non-concentrating and non-tracking solar low-temperature thermal utilization.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a solar concentrating and heat collecting device, including a support assembly, on which a collector tube is arranged. Inside the collector tube, a U-shaped medium pipeline is arranged. The support assembly includes a diagonal support A on its inner side, a diagonal support B on its outer side and a support. The collector tube forms a fixed angle with the horizontal plane. On the support, there is a reflector fixing bracket with an adjustable angle. On the reflector fixing bracket, there is a reflector, and a reflector tracking drive is arranged below it. Inside the support assembly, there is a tracking controller, and the tracking controller drives the reflector tracking drive to rotate the reflector.

[0007] Furthermore, the support assembly is connected to the column base.

[0008] Further, the inclined support A is connected between the support assembly and the column base through triangular connectors at both ends thereof.

[0009] Further, the heat collecting pipe is fixed on the support assembly by means of a heat collecting pipe fixing support, and heat collecting pipe end caps filled with polyurethane foam glue and heat collecting pipe bottom supports are respectively arranged at both ends thereof.

[0010] Further, the included angle between the heat collecting pipe and the horizontal plane is 65°, and an all-glass vacuum solar heat collecting pipe is adopted.

[0011] Further, the reflecting mirror is a Fresnel plane lens.

[0012] Further, the medium pipeline adopts a flexible pipeline.

[0013] The beneficial effects achieved by the present utility model are as follows: It does not require a rather large flat site, can be arranged using scattered land, the method is relatively flexible, the scale can be large or small, it can operate with a single heat collection device, or multiple heat collection devices can be operated in series or in parallel; low magnification concentration, high temperature, the heat collecting pipes are heated from multiple sides, and the energy flux density is uniform, and there is no problem of bending deformation caused by uneven heating of the heat collecting pipes; multiple heat collecting pipes are arranged to form a relatively wide sunlight receiving surface, and the tracking accuracy requirements for the reflecting mirror are not high; the support adopts finished profiles and bolt connections, reducing the welding workload and at the same time reducing the support cost; the heat collecting pipe is an all-glass vacuum solar heat collecting pipe, which has a lower cost than the metal straight-through vacuum pipes used in trough type and Fresnel type; a low-cost plane reflecting mirror is used instead of an expensive parabolic reflecting mirror, and the manufacturing and installation are simpler; the heat collecting pipes and the medium pipelines of the present device are fixed on the support and separated from the reflecting mirror tracking, which can avoid the problems of high-temperature and high-pressure pipeline sealing and connection loosening caused by the reflecting mirror tracking movement, and improve the operation stability of the system. Description of the Drawings

[0014] The drawings are used to provide further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0015] Figure 1 is the structural schematic diagram of the present utility model Figure 1 ;

[0016] Figure 2 is the structural schematic diagram of the present utility model Figure 2 ;

[0017] Figure 3 is the principle schematic diagram of the present utility model.

[0018] In the figure: 1. Column base; 2. Bracket assembly; 2.1. Inclined support A; 2.2. Inclined support B; 2.3. Support; 3. Triangular connecting piece; 4. Mirror fixing bracket; 5. Mirror; 6. Heat collecting pipe base support; 7. Heat collecting pipe; 8. Medium pipeline; 9. Heat collecting pipe fixing support; 10. Heat collecting pipe head; 11. Mirror tracking drive; 12. Tracking controller. Specific embodiments

[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustration and explanation of the present invention, and are not used to limit the present invention.

[0020] Embodiment 1

[0021] As Figures 1 to 3 shown, a solar concentrating and heat collecting device includes a bracket assembly 2, on which a heat collecting pipe 7 is provided. A U-shaped medium pipeline 8 is arranged inside the heat collecting pipe 7. The bracket assembly 2 includes an inclined support A 2.1 on its inner side, an inclined support B 2.2 on its outer side, and a support 2.3. The heat collecting pipe 7 forms a fixed angle with the horizontal plane. An adjustable-angle mirror fixing bracket 4 is provided on the support 2.3. A mirror 5 is provided on the mirror fixing bracket 4, and a mirror tracking drive 11 is provided below it. A tracking controller 12 is arranged inside the bracket assembly 2, and the tracking controller 12 drives the mirror tracking drive 11 to rotate the mirror 5.

[0022] The bracket assembly 2 is connected to the column base 1.

[0023] The inclined support A 2.1 is connected between the bracket assembly 2 and the column base 1 through triangular connecting pieces 3 at both ends.

[0024] The heat collecting pipe 7 is fixed on the bracket assembly 2 by a heat collecting pipe fixing support 9, and heat collecting pipe heads 10 filled with polyurethane foam glue and heat collecting pipe base supports 6 are respectively arranged at both ends.

[0025] The heat collecting pipe 7 forms a fixed angle of 65° with the horizontal plane; the heat collecting pipe 7 is selected from all-glass vacuum solar heat collecting pipes;

[0026] The mirror 5 is selected from a reflective surface with a high reflectivity such as a plane lens or mirror aluminum; the mirror 5 is preferably a Fresnel plane lens;

[0027] The medium pipeline 8 is selected as a flexible pipeline such as a stainless steel corrugated pipe;

[0028] The heat collecting pipe 7 is fixed to the support assembly 2 at a fixed angle by the heat collecting pipe fixing support 9; the reflecting mirror 5 is fixed to the reflecting mirror fixing bracket 4 and connected to the reflecting mirror tracking drive 11; the reflecting mirror tracking drive 11 is fixed to the support assembly 2; the tracking controller 12 drives the reflecting mirror tracking drive 11 to rotate the reflecting mirror, so that the reflected sunlight irradiates on the heat collecting pipe to achieve the purpose of concentrating heat collection.

[0029] The heat collection device may include one or more heat collecting pipes 7 and reflecting mirrors 5, which are fixed in the same or similar bracket forms and arranged in an array according to certain rules to form a unit or a combination, so as to increase the heat collection temperature by concentrating sunlight and improve the utilization efficiency of solar energy.

[0030] The bracket is made of finished profiles and fixed with bolts, which has the characteristics of easy installation and low cost; the front and rear reflecting mirrors 5 of the heat collecting pipe 7 are driven by the tracking controller 12 to drive the reflecting mirror tracking drive 11 according to the solar altitude angle, so that the sunlight irradiating on the reflecting mirror 5 is reflected onto the heat collecting pipe 7 at the same time to achieve the effect of concentrating heat collection; a U-shaped medium pipeline 8 is placed in the inner cavity of the heat collecting pipe 7, and heat-conducting and heat-insulating materials are filled.

[0031] Manufacturing process: Configure 2 reflecting mirrors 5 and 12 heat collecting pipes 7. The heat collecting pipe 7 uses a single-opening all-glass vacuum solar heat collecting pipe with a diameter of φ125. The heat collecting pipe fixing support 9 uses a metal pipe clamp with a diameter of φ125. The bottom support of the heat collecting pipe is made of 1mm thick galvanized sheet bent and formed and fixed to the support assembly 2 with bolts.

[0032] The support assembly 2, the triangular connecting piece 3, and the reflecting mirror fixing bracket 4 all use C-shaped steel and accessories, and are connected and fixed with bolts.

[0033] The reflecting mirror 5 uses a Fresnel plane lens and is fixed to the reflecting mirror fixing bracket 4 with bolts. The heat collecting pipe head 10 uses a PVC three-way with an inner diameter of 125mm and is fixed to the support assembly 2 with a φ125 metal pipe clamp.

[0034] The medium pipeline 8 uses a 6-point stainless steel corrugated pipe, passes through the heat collecting pipe head 10 and is placed in the center of the heat collecting pipe 7 to form a U shape, and then 12 heat collecting pipes 7 are cascaded. Then, the heat collecting pipe 7 is filled with graphite to the pipe orifice position, and the heat collecting pipe head 10 is filled with polyurethane foam glue for heat preservation.

[0035] The reflecting mirror tracking drive 11 is composed of a worm and gear reducer with a DC motor and an inclination sensor, and is fixed to the support assembly 2 with bolts.

[0036] The mirror fixing bracket 4 and the mirror 5 are taken as a whole and connected to the mirror tracking drive 11 by bolts. The inclination angle sensor feeds back the rotation angle of the mirror 5, and the tracking controller 12 calculates the angle that the mirror needs to rotate through logical operations based on the solar altitude angle. When the angle fed back by the inclination angle sensor is equal to the angle calculated by the controller 12 that needs to rotate, the rotation of the mirror 5 stops, so that the light reflected by the sunlight irradiates the heat collecting tube 7, achieving the purpose of concentrating solar heat collection.

[0037] It should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention. The terms used in the description of the present application are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. For the sake of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0038] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described here. The objects distinguished by "first", "second", etc. are usually of the same type and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects. The character " / " generally means an "or" relationship between the associated objects before and after.

[0039] It should be noted that in the description of this application, the orientation or positional relationships indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing this application and simplifying the description. Without contrary explanations, these directional terms do not indicate or imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application; the directional terms "inside, outside" refer to the inside and outside relative to the contours of the respective components.

Claims

1. A solar concentrator and heat collector device, characterized in that, It includes a support assembly, on which a heat collecting tube is provided. Inside the heat collecting tube, a U-shaped medium pipeline is arranged. The support assembly includes an inclined support A on its inner side, an inclined support B on its outer side, and a support. The heat collecting tube forms a fixed angle with the horizontal plane. On the support, there is a mirror fixing bracket with adjustable angle. On the mirror fixing bracket, a mirror is provided, and a mirror tracking drive is arranged below it. Inside the support assembly, there is a tracking controller, and the tracking controller drives the mirror tracking drive to make the mirror rotate.

2. The solar concentrator heat collection device according to claim 1, characterized in that, The support assembly is connected to the column base.

3. The solar concentrator and heat collector device according to claim 1, wherein The inclined support A is connected between the support assembly and the column base through triangular connectors at its two ends.

4. The solar concentrator heat collection device according to claim 1, wherein The heat collecting tube is fixed on the support assembly by a heat collecting tube fixing support, and heat collecting tube end caps filled with polyurethane foam glue and heat collecting tube bottom supports are respectively arranged at its two ends.

5. The solar concentrator heat collection device according to claim 1, characterized in that The angle between the heat collecting tube and the horizontal plane is 65°, and it adopts an all-glass vacuum solar heat collecting tube.

6. The solar concentrator and collector device according to claim 1, characterized in that The mirror is a Fresnel plane lens.

7. The solar concentrator heat collection device according to claim 1, wherein, The medium pipeline adopts a flexible pipeline.

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