Heliostat backboard

Abstract

The utility model relates to a heliostat back plate which comprises a plate body. The plate body comprises a plate surface. Two first long edges, two first short edges and first corners used for connecting the first long edges and the first short edges are arranged on the periphery of the plate face. The first long edge, the first short edge and the first corner are folded in the direction away from the reflector to form a first folded edge. And a first bonding surface is formed on the first folding edge. A plurality of stamping grooves are formed in the plate body in a stamping mode. The stamping groove is a rectangular groove, and the edges of the opening are two second long edges, two second short edges and second corners used for connecting the second long edges and the second short edges respectively. And the second long edge, the second short edge and the second corner are folded towards the direction deviating from the reflector to form a second folded edge. And a second bonding surface is formed on the second folding edge. And the first bonding surface and the second bonding surface are positioned on the same plane and are jointly used for bonding the reflector. Through the arrangement of the first bonding surface and the second bonding surface, the continuity of the glue line is ensured, and the problems of glue breaking and local excessive glue output in the gluing process are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heliostats, in particular to a heliostat back plate. Background Art

[0002] As a clean, renewable energy source, the utilization of solar energy is gaining increasing attention. Concentrated solar power generation (CSP) is an emerging solar power generation technology, following photovoltaic power generation. Tower-type CSP technology is an effective way to scale solar thermal utilization and has attracted widespread attention for its advantages, including energy storage and peak load regulation.

[0003] In a tower solar power generation system, heliostats use reflectors to focus sunlight onto a heat sink, heating the heat-absorbing medium within the sink. This heat is then transferred through the heat exchange medium to drive a steam turbine for power generation. Heliostats represent a significant portion of the investment in tower solar thermal power generation projects and occupy a significant portion of the power plant site. Large heliostats are composed of multiple sub-mirrors, each consisting of a reflector and a heliostat backplane. The design and manufacture of the heliostat backplane directly impact the overall focusing performance and environmental resistance of the heliostat. Furthermore, the type of bonding agent between the backplane and the reflector significantly impacts the overall performance of the heliostat.

[0004] The heliostat backplane currently in use is a flat plate structure, with the reflector glued to the backplane. This large-area bonding process and the bonding agent have a significant impact on the overall performance of the heliostat, leaving room for improvement. Utility Model Content

[0005] In order to overcome the above technical problems, the present application provides a heliostat backplate.

[0006] The heliostat back plate provided by the present invention adopts the following technical solutions:

[0007] A heliostat back plate comprises a plate body; the plate body comprises a plate surface; the plate surface is surrounded by two first long sides, two first short sides, and a first corner for connecting the first long sides and the first short sides; the two first long sides are opposite and parallel; the two first short sides are opposite and parallel; the first long side, the first short side, and the first corner are all folded away from the reflector to form a first folded edge; the first folded edge protrudes from the plate surface in the direction pointing to the reflector and forms a first bonding surface; a plurality of stamping grooves are stamped on the plate body; each of the stamping grooves has a The openings are all facing the reflector; the stamping groove is a rectangular groove, and the opening edges are respectively two second long sides, two second short sides and a second corner for connecting the second long sides and the second short sides; the two second long sides are opposite and parallel; the two second short sides are opposite and parallel; the second long side, the second short side and the second corner are all folded away from the reflector to form a second folded edge; the second folded edge protrudes from the plate surface in the direction pointing to the reflector and forms a second bonding surface; the first bonding surface and the second bonding surface are located in the same plane and are jointly used for bonding the reflector.

[0008] Optionally, a plurality of the stamping grooves are arranged in a matrix; the first short side and the second short side are parallel; and the first long side and the second long side are parallel.

[0009] Optionally, the stamping grooves are spaced from each other; a plurality of transverse ribs and a plurality of longitudinal ribs are formed on the plate body; the transverse ribs and the longitudinal ribs are staggered in a grid pattern; the transverse ribs are connected between the two first short sides, and are located between the first long side and the second long side adjacent thereto, or are located between the two second long sides adjacent thereto in the width direction of the plate body; the longitudinal ribs are connected between the two first long sides, and are located between the first short side and the second short side adjacent thereto, or are located between the two second short sides adjacent thereto in the length direction of the plate body.

[0010] Optionally, the number of the stamping slots is sixteen; the sixteen stamping slots are arranged in a 4*4 matrix.

[0011] Optionally, the bottom of the stamping groove is hollowed out.

[0012] Optionally, bolt holes are provided at the intersections of the transverse reinforcement and the longitudinal reinforcement; the bolt holes are used for connecting the plate body and the heliostat truss.

[0013] Optionally, bolt hole slots are provided at the intersections of the transverse reinforcement and the longitudinal reinforcement; and the bolt holes are provided on the bottom walls of the bolt hole slots.

[0014] Optionally, an exhaust hole is provided on the plate between each first corner and the second corner adjacent thereto.

[0015] Optionally, a plurality of circular grooves and a plurality of key-shaped grooves are formed on the plate body; the circular grooves and the key-shaped grooves are used for positioning the heliostat back plate during packaging, transportation and gluing.

[0016] Optionally, the first adhesive surface and the second adhesive surface may be bonded to the reflector by silicone or foam tape.

[0017] As described above, the heliostat backplane of the present application has at least the following beneficial effects:

[0018] 1. By providing a first folded edge and a second folded edge, and bonding the backboard and the reflector through the first adhesive surface on the first folded edge and the second adhesive surface on the second folded edge, compared with the existing heliostat backboard, the continuity of the glue line can be ensured, and the problems of glue breakage and excessive glue discharge in the local area during the gluing process can be effectively avoided.

[0019] 2. Both the first folded edge and the second folded edge have non-limiting structures, which can improve the overall rigidity of the plate.

[0020] 3. The board body is integrally stamped and formed with a simple structure. The waste shape and specification of the backboard produced by selective stamping is affected by the environment of the implementation site and is easy to recycle and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the heliostat backplane structure.

[0022] Figure 2 yes Figure 1 Cross-sectional view in the AA direction.

[0023] Figure 3 yes Figure 1 Cross-sectional view in the BB direction.

[0024] Figure 4 yes Figure 1 Cross-sectional view in CC direction.

[0025] Figure numerals: 1. Plate body; 2. Plate surface; 21. First long side; 22. First short side; 23. First corner; 3. Stamping groove; 31. Second long side; 32. Second short side; 33. Second corner; 4. First folding edge; 41. First inclined section; 42. First bonding surface; 43. First flange; 5. Second folding edge; 51. Second inclined section; 52. Second bonding surface; 53. Second flange; 6. Transverse rib; 7. Longitudinal rib; 8. Bolt hole; 9. Bolt hole groove; 10. Circular groove; 11. Key groove; 12. Exhaust hole. DETAILED DESCRIPTION

[0026] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation methods. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following examples and the features in the examples can be combined with each other unless there is a conflict. It should also be understood that the terms used in the examples of the present invention are for the purpose of describing specific implementation methods, not for the purpose of limiting the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0027] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for understanding and reading by those familiar with this technology, and are not used to limit the conditions for implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the present invention without substantially changing the technical content.

[0028] Please refer to Figure 1-4 The present application discloses a heliostat backing plate, comprising a plate body 1. The plate body 1 includes a plate surface 2. The plate surface 2 is surrounded by two first long sides 21, two first short sides 22, and a first corner 23 for connecting the first long sides 21 and the first short sides 22. The two first long sides 21 are opposite and parallel. The two first short sides 22 are opposite and parallel. The first long sides 21, the first short sides 22, and the first corner 23 are all folded away from the reflector to form a first folded edge 4. The first folded edge 4 protrudes from the plate surface 2 in a direction toward the reflector and forms a first adhesive surface 42. The first adhesive surface 42 surrounds the plate body.

[0029] Several punched grooves 3 are punched into the plate body 1. The opening of each punched groove 3 faces the reflector. The punched groove 3 is a rectangular groove, and the opening edges are respectively two second long sides 31, two second short sides 32, and a second corner 33 for connecting the second long sides 31 and the second short sides 32. The two second long sides 31 are opposite and parallel. The two second short sides 32 are opposite and parallel. The second long sides 31, the second short sides 32, and the second corner 33 are all folded away from the reflector to form a second folded edge 5. The second folded edge 5 protrudes from the plate surface 2 in the direction toward the reflector and forms a second adhesive surface 52. The second adhesive surface 52 surrounds the punched groove 3 in which it is located. The first adhesive surface 42 and the second adhesive surface 52 are located in the same plane and are used together to bond the reflector.

[0030] Please refer to Figure 1 Specifically, the plurality of punching grooves 3 are arranged in a matrix. The first short side 22 and the second short side 32 are parallel. The first long side 21 and the second long side 31 are parallel. That is, the length and width of the punching grooves 3 are consistent with the length and width of the plate surface 2.

[0031] More specifically, the stamping grooves 3 are spaced apart from each other. A plurality of transverse ribs 6 and a plurality of longitudinal ribs 7 are formed on the plate body 1. The transverse ribs 6 and the longitudinal ribs 7 are stamped integrally with the plate body 1. The transverse ribs 6 and the longitudinal ribs 7 are both part of the panel 2 on the side facing the reflector. The transverse ribs 6 and the longitudinal ribs 7 are staggered in a grid pattern. The transverse rib 6 is connected between the two first short sides 22, and is located between the first long side 21 and the second long side 31 adjacent thereto, or between the two second long sides 31 adjacent thereto in the width direction of the plate body 1. The longitudinal rib 7 is connected between the two first long sides 21, and is located between the first short side 22 and the second short side 32 adjacent thereto, or between the two second short sides 32 adjacent thereto in the length direction of the plate body 1. The transverse ribs 6 and the longitudinal ribs 7 can ensure the rigidity of the plate body 1, making it less likely for the plate body 1 to deform, thereby ensuring the stability of the mirror surface size of the reflector.

[0032] Please continue to refer to Figure 1 If the number of stamping grooves 3 is too large, the shape of the stamping die will be complicated and the processing difficulty will increase. If the number of stamping grooves 3 is too small, the number of corresponding transverse ribs 6 and longitudinal ribs 7 will be reduced, and the improvement of the rigidity of the plate body 1 by the transverse ribs 6 and longitudinal ribs 7 will be reduced. Therefore, the number of stamping grooves 3 should be appropriately selected according to the ratio between the size of the plate body 1 and the size of the stamping grooves 3. In a preferred embodiment of the present application, the number of stamping grooves 3 is sixteen. The sixteen stamping grooves 3 are arranged in the form of a 4*4 matrix, forming five transverse ribs 6 and five longitudinal ribs 7.

[0033] On the other hand, the first fold 4 and the second fold 5 can also improve the rigidity of the board 2. Figure 2 , Figure 2 for Figure 1Cross-sectional view along the AA direction. Figure 2 In the figure, the middle vertical section is the board surface 2. Located above the board surface 2 is the first folded edge 4, which is formed by folding over a first long side 21 of the board surface 2. The first folded edge 4 includes a first inclined section 41, a first adhesive surface 42, and a first flange 43. The first inclined section 41 is connected between the board surface 2 and the first adhesive surface 42, and the first adhesive surface 42 protrudes from the board surface 2. The first flange 43 is connected to the side of the first adhesive surface 42 away from the board surface 2 and is bent in the direction away from the reflector. Located below the board surface 2 is the second folded edge 5, which is formed by folding over the second long side 31 of the stamping groove 3. The second folded edge 5 includes a second inclined section 51, a second adhesive surface 52, and a second flange 53. The second inclined section 51 is connected between the board surface 2 and the second adhesive surface 52, and the second adhesive surface 52 protrudes from the board surface 2. The second flange 53 is connected to the side of the second adhesive surface 52 away from the board surface 2 and is bent in the direction away from the reflector.

[0034] Figure 3 for Figure 1 Cross-sectional view along the BB direction. Figure 3 In the figure, the middle vertical section is the plate body 1, and the two sides of the plate body 1 are the second folded edges 5.

[0035] The first folded edge 4 and the second folded edge 5 both have a C-shaped cross-section, are structurally non-limiting, and can provide the plate body 1 with sufficient rigidity.

[0036] In a preferred embodiment of the present application, in order to reduce the weight of the plate body 1, the bottom of the punching groove 3 is hollowed out. The degree of hollowing out of the punching groove 3 can be appropriately selected according to the rigidity of the plate body 1. It can be completely hollowed out or partially hollowed out. Figure 1 In the embodiment, the bottom of the stamping groove 3 is completely hollowed out. By hollowing out the bottom of the stamping groove 3, the weight of the plate body 1 is reduced, which is beneficial to the overall lightweighting of the heliostat.

[0037] Please continue to refer to Figure 1 , a bolt hole slot 9 is provided at the intersection of the transverse reinforcement 6 and the longitudinal reinforcement 7. The bolt hole slot 9 is cross-shaped, with one side of the cross parallel to the transverse reinforcement 6 and the other side parallel to the longitudinal reinforcement 7. A bolt hole 8 is also provided at the intersection of the transverse reinforcement 6 and the longitudinal reinforcement 7. The bolt hole 8 is used to connect the plate body 1 to the heliostat truss. The bolt hole 8 is provided on the bottom wall of the bolt hole slot 9 and is located in the center of the cross of the bolt hole slot 9. The bolt hole slot 9 is conducive to increasing the stiffness near the bolt hole 8 and reducing the local deformation. The arrangement of the bolt hole 8 at the intersection of the transverse reinforcement 6 and the longitudinal reinforcement 7 is conducive to minimizing the deformation of the plate body 1 and the reflector mounted thereon.

[0038] Figure 4 for Figure 1 Cross-sectional view in CC direction. Figure 4In the figure, the middle vertical section is the bottom wall of the bolt hole slot 9, and the longitudinal reinforcement 7 is connected to both ends of the bottom wall of the bolt hole slot 9.

[0039] Vent holes 12 are defined between each first corner 23 and the adjacent second corner 33 on the plate 1. These vent holes 12 balance the pressure between the space between the plate 1 and the reflector and the outside world. They also serve as drainage holes during heliostat operation, facilitating stable operation.

[0040] In order to facilitate the positioning of the plate body 1 during packaging, transportation and gluing, a plurality of circular grooves 10 and a plurality of key grooves 11 are provided on the plate body 1. Figure 1 There are twelve circular grooves 10, three of which are arranged on each side of the plate body 1, and each circular groove 10 is located on the longitudinal rib 7 or the transverse rib 6. There are four key-shaped grooves 11, which are arranged in a rectangular shape near the middle of the plate body 1 and are all located on the transverse rib 6 or the longitudinal rib 7. Figure 1 The number and arrangement of the circular grooves 10 and key grooves 11 are shown for exemplary purposes only. In other embodiments of the present application, the number and arrangement of the circular grooves 10 and key grooves 11 may be modified accordingly based on the actual use of the back panel. The circular grooves 10 and key grooves 11 not only serve to position the panel 1 but also help increase the rigidity of the panel 1.

[0041] When the plate 1 is bonded to the reflector, the first bonding surface 42 and the second bonding surface 52 are bonded to the reflector using silicone or foam tape. Other suitable adhesives may also be used in other embodiments of the present application. By selecting different adhesives, the impact of different climate environments and reflector sizes on the overall performance of the heliostat can be addressed.

[0042] The heliostat backplane of this application has the following advantages:

[0043] 1. By providing the first folded edge 4 and the second folded edge 5, and by using the first adhesive surface 42 on the first folded edge 4 and the second adhesive surface 52 on the second folded edge 5 to achieve bonding between the backboard and the reflector, compared with the existing heliostat backboard, the continuity of the glue line can be ensured, and the problems of glue breakage and excessive local glue discharge during the gluing process can be effectively avoided.

[0044] 2. Both the first folded edge 4 and the second folded edge 5 have non-limiting structures and can improve the overall rigidity of the plate body 1.

[0045] 3. The plate body 1 is integrally stamped and formed, and has a simple structure. The waste shapes and specifications of the back plate produced by selective stamping are affected by the environment of the implementation site and are easy to recycle, saving costs.

[0046] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A heliostat back plate, characterized in that: It includes a plate body (1); The plate body (1) comprises a plate surface (2); the plate surface (2) is surrounded by two first long sides (21), two first short sides (22), and a first corner (23) for connecting the first long sides (21) and the first short sides (22); the two first long sides (21) are opposite and parallel; the two first short sides (22) are opposite and parallel; the first long side (21), the first short side (22), and the first corner (23) are all folded in a direction away from the reflector to form a first folded edge (4); the first folded edge (4) protrudes from the plate surface (2) in a direction pointing toward the reflector and forms a first adhesive surface (42); A plurality of punching grooves (3) are punched on the plate body (1); the opening of each punching groove (3) faces the reflector; The stamping groove (3) is a rectangular groove, and the opening edges are respectively two second long sides (31), two second short sides (32), and a second corner (33) for connecting the second long sides (31) and the second short sides (32); the two second long sides (31) are opposite and parallel; the two second short sides (32) are opposite and parallel; the second long sides (31), the second short sides (32), and the second corner (33) are all folded in a direction away from the reflector to form a second folded edge (5); the second folded edge (5) protrudes from the plate surface (2) in a direction pointing to the reflector and forms a second bonding surface (52); The first bonding surface (42) and the second bonding surface (52) are located in the same plane and are used together to bond the reflector.

2. The heliostat back plate according to claim 1, wherein: The plurality of stamping grooves (3) are arranged in a matrix; the first short side (22) and the second short side (32) are both parallel; and the first long side (21) and the second long side (31) are both parallel.

3. The heliostat back plate according to claim 2, wherein: The stamping grooves (3) are spaced apart from each other; a plurality of transverse ribs (6) and a plurality of longitudinal ribs (7) are formed on the plate body (1); the transverse ribs (6) and the longitudinal ribs (7) are staggered in a grid pattern; The transverse rib (6) is connected between the two first short sides (22), and is located between the first long side (21) and the second long side (31) adjacent thereto, or is located between two second long sides (31) adjacent thereto in the width direction of the plate body (1); The longitudinal rib (7) is connected between the two first long sides (21), and is located between the first short side (22) and the second short side (32) adjacent thereto, or between two second short sides (32) adjacent thereto in the length direction of the plate body (1).

4. The heliostat back plate according to claim 2 or 3, characterized in that: The number of the punching slots (3) is sixteen; the sixteen punching slots (3) are arranged in the form of a 4*4 matrix.

5. The heliostat back plate according to claim 1, wherein: The bottom of the punching groove (3) is hollowed out.

6. The heliostat back plate according to claim 3, characterized in that: Bolt holes (8) are provided at the intersections of the transverse reinforcement (6) and the longitudinal reinforcement (7); the bolt holes (8) are used for connecting the plate body (1) with the heliostat truss.

7. The heliostat back plate according to claim 3, characterized in that: A bolt hole slot (9) is provided at the intersection of the transverse reinforcement (6) and the longitudinal reinforcement (7); and the bolt hole (8) is provided on the bottom wall of the bolt hole slot (9).

8. The heliostat back plate according to claim 1, wherein: An exhaust hole (12) is provided on the plate body (1) between each first corner (23) and the second corner (33) adjacent thereto.

9. The heliostat back plate according to claim 1, wherein: The plate body (1) is provided with a plurality of circular grooves (10) and a plurality of key-shaped grooves (11); the circular grooves (10) and the key-shaped grooves (11) are used for positioning the heliostat back plate during packaging, transportation and gluing.

10. The heliostat back plate according to claim 1, wherein: The first adhesive surface (42) and the second adhesive surface (52) can be bonded to the reflector by means of silica gel or foam tape.

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