Heliostat bonding member and heliostat

Abstract

The application provides a heliostat bonding piece, which comprises a bonding piece body, a ball head piece, a connecting seat and an end cover. The bonding piece body is provided with a through hole along a center line direction of the bonding piece body. The through hole comprises a ball head matching section and an end cover mounting section. The end cover is at least partially located in the end cover mounting section and is connected and fixed with the bonding piece body. The ball head piece comprises a ball head part and a rod part. The ball head part is located in the ball head matching section and is limited between the bonding piece body and the end cover. The rod part extends out of the bonding piece body and is connected with the connecting seat. The bonding piece body can rotate relative to the connecting seat around the ball head part. The application also provides a heliostat comprising the heliostat bonding piece. The ball head piece, the bonding piece body and the end cover are matched to form a spherical hinge structure, so that the bonding piece body can rotate relative to the ball head part without displacement. Therefore, the mirror of the heliostat can be automatically adjusted during mirror surface forming, the mirror surface forming is smoother, and the mirror surface forming quality is improved.

Description

Technical Field

[0001] This application belongs to the field of heliostats, specifically, it relates to a heliostat adhesive and a heliostat. Background Technology

[0002] Heliostats are core components of concentrated solar power (CSP) systems. Their function is to precisely focus sunlight onto a central receiver (such as the absorber tower in a tower system or the collector tube in a trough system) via a reflective mirror, converting light energy into heat or electricity. The quality of the mirror's molding directly affects the focusing accuracy. In related technologies, the height of the adhesive sheet assembly is adjusted by adjusting the screw position of the nut and the adhesive sheet body. The mirror's surface shape is adjusted by adjusting the height of each adhesive sheet assembly between the heliostat frame and the mirror. This adjustment method uses multiple support block assemblies to adjust the mirror's curvature. During the molding process, the slight tensile stress caused by height differences and forced displacement result in an uneven mirror curvature, thus affecting the mirror's molding quality and the focusing accuracy. Summary of the Invention

[0003] This application aims to at least partially solve one of the technical problems in the related art. To this end, the main technical solutions adopted in this application include:

[0004] In a first aspect, this application provides a heliostat adhesive component, comprising an adhesive sheet body, a ball head, a connecting seat, and an end cap. The adhesive sheet body has a through hole along its centerline, the through hole including a ball head mating section and an end cap mounting section. The end cap is at least partially located in the end cap mounting section and is connected to and fixed to the adhesive sheet body. The ball head includes a ball head and a rod portion. The ball head is located in the ball head mating section and is limited between the adhesive sheet body and the end cap. The rod portion extends out of the adhesive sheet body and is connected to the connecting seat. The adhesive sheet body is rotatable relative to the connecting seat around the ball head.

[0005] The heliostat bonding component provided in this application forms a ball hinge structure by combining the ball head, the bonding sheet body, and the end cap. This allows the bonding sheet body to rotate relative to the ball head without displacement, enabling the heliostat's reflector to automatically adjust during the mirror forming process. This significantly reduces the impact of tensile stress and forced displacement, resulting in smoother mirror forming, improved mirror forming quality, and consequently, improved beam focusing accuracy.

[0006] Secondly, this application provides a heliostat, including a heliostat bracket, a heliostat adhesive component, and a reflector. The reflector is connected to the heliostat bracket via the heliostat adhesive component. The heliostat adhesive component includes an adhesive sheet body, a ball head component, a connecting seat, and an end cap. The adhesive sheet body has a through hole along its centerline. The through hole includes a ball head mating section and an end cap mounting section. The end cap is at least partially located in the end cap mounting section and is connected to and fixed to the adhesive sheet body. The ball head component includes a ball head and a rod portion. The ball head is located in the ball head mating section and is limited between the adhesive sheet body and the end cap. The rod portion extends out of the adhesive sheet body and is connected to the connecting seat. The connecting seat is connected to the heliostat bracket.

[0007] The heliostat provided in this application, due to the adoption of the aforementioned heliostat adhesive component, allows the heliostat's reflector surface to be angled to release internal stress by using a ball-head hinge structure. This enables adaptive dynamic angle adjustment during the fixing process, significantly reducing the impact of tensile stress and forced displacement, and improving the mirror surface forming quality. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a structural diagram of a heliostat adhesive provided in an embodiment of this application;

[0010] Figure 2 An exploded view of a heliostat adhesive provided in an embodiment of this application;

[0011] Figure 3 A cross-sectional view of a heliostat adhesive provided in an embodiment of this application;

[0012] Figure 4 This is a structural diagram of the heliostat provided in an embodiment of this application;

[0013] Figure 5 This is a structural diagram of a reflector with a heliostat adhesive attached, provided in an embodiment of this application.

[0014] Figure 6 This is a connection diagram showing the connection state between the heliostat adhesive component and the sub-beam provided in the embodiments of this application. Detailed Implementation

[0015] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0016] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0017] Heliostats are core components of concentrated solar power (CSP) systems. Their function is to precisely focus sunlight onto a central receiver (such as the absorber tower in a tower system or the collector tube in a trough system) via a reflective mirror, converting light energy into heat or electricity. The quality of the mirror's molding directly affects the focusing accuracy. In related technologies, the height of the adhesive sheet assembly is adjusted by adjusting the screw position of the nut and the adhesive sheet body. The mirror's surface shape is adjusted by adjusting the height of each adhesive sheet assembly between the heliostat frame and the mirror. This adjustment method uses multiple support block assemblies to adjust the mirror's curvature. During the molding process, the slight tensile stress caused by height differences and forced displacement result in an uneven mirror curvature, thus affecting the mirror's molding quality and the focusing accuracy.

[0018] To resolve any of the above issues, please refer to [link / reference]. Figures 1 to 3 This application provides a heliostat adhesive component, including an adhesive sheet body 1, a ball head component 2, a connecting seat 3, and an end cap 4. The adhesive sheet body 1 has a through hole 11 along its center line l. The through hole 11 includes a ball head mating section 11a and an end cap mounting section 11b. The end cap 4 is at least partially located in the end cap mounting section 11b and is connected to and fixed to the adhesive sheet body 1. The ball head component 2 includes a ball head 21 and a rod 22. The ball head 21 is located in the ball head mating section 11a and is limited to the space between the adhesive sheet body 1 and the end cap 4. The rod 22 extends out of the adhesive sheet body 1 and is connected to the connecting seat 3. The adhesive sheet body 1 is rotatable relative to the connecting seat 3 around the ball head 21. The heliostat adhesive component provided in this application forms a ball hinge structure by means of the ball head 2, the adhesive sheet body 1, and the end cap 4. This allows the adhesive sheet body 1 to rotate relative to the ball head 21 of the ball head 2 without displacement, enabling the heliostat adhesive component to automatically adjust during the mirror forming process. This significantly reduces the influence of tensile stress and forced displacement, resulting in smoother mirror forming, which helps improve the mirror forming quality and, consequently, improves the focusing accuracy of the light spot.

[0019] Please refer to it again. Figure 3Compared to the end cap mounting section 11b, the ball-end fitting section 11a is closer to the connecting seat 3. The through hole 11 also includes a straight hole section 11c. The ball-end fitting section 11a is located between the straight hole section 11c and the end cap mounting section 11b, and is connected to both the straight hole section 11c and the end cap mounting section 11b. The maximum diameter of the ball-end fitting section 11a is smaller than the minimum diameter of the end cap mounting section 11b, and the diameter of the straight hole section 11c is equal to or smaller than the minimum diameter of the ball-end fitting section 11a. In other words, the diameter of the end cap mounting section 11b is greater than the diameter of the straight hole section 11c, and the end cap mounting section 11b and the straight hole section 11c are connected at least through the ball-end fitting section 11a. The diameter of the ball-end fitting section 11a decreases in the direction from the end cap mounting section 11b to the straight hole section 11c. In this embodiment, the ball head mating section 11a is a spherical arc surface, and the ball head mating section 11a and the end cap mounting section 11b, and / or the ball head mating section 11a and the straight hole section 11c are also connected by a conical surface section.

[0020] Specifically, the diameter of the ball head 21 is greater than the minimum diameter of the ball head mating section 11a to prevent the ball head 21 from disengaging from the ball head mating section 11a. The diameter of the ball head 21 refers to the diameter passing through the center of the ball head 21. Furthermore, the diameter of the rod portion 22 is less than the minimum diameter of the straight hole section 11c to facilitate the smooth passage of the rod portion 22 through the straight hole section 11c, thus facilitating assembly.

[0021] Furthermore, along the centerline l of the adhesive sheet body 1, the ball head 21 is located between the rod portion 22 and the end cap 4, and the ball head 21 spherically engages with both the adhesive sheet body 1 and the end cap 4. In other words, the ball head engagement section 11a of the adhesive sheet body 1 serves as a ball head support portion, and the ball head support portion and the end cap 4 form a ball-and-socket joint, which together enclose the receiving space for the ball head 21. Furthermore, the surfaces of the ball head support portion and the end cap 4 that engage with the ball head 21 are both spherical arc surfaces, forming a ball hinge structure that provides three rotational degrees of freedom, enabling multi-directional rotation and flexibly withstanding loads from different directions. This allows for automatic adjustment during the mirror forming process, resulting in a smooth mirror forming curvature, mitigating the effects of tensile stress and forced displacement, and improving the quality of the mirror forming process.

[0022] In this embodiment, the ball head 21 and the rod 22 are integral parts. Specifically, the ball head 21 and the rod 22 are machined from a blank, formed by powder metallurgy, or integrally cast. Since there are many possible implementations, they will not be listed one by one. Of course, they can also be connected by welding, bonding, threaded connection, etc.

[0023] In this embodiment, the end cap 4 is connected to the adhesive sheet body 1 at the end away from the connecting seat 3. The end cap 4 is threadedly connected to the adhesive sheet body 1, and the end of the end cap 4 is provided with a rotating groove 41. The rotating groove 41 is provided to facilitate the installation of the end cap 4 onto the adhesive sheet body 1 with the help of tools during the assembly process. The rotating groove 41 can be a slotted groove, a cross groove, etc.

[0024] Please refer to it again. Figures 1 to 3 The adhesive sheet body 1 includes a disc portion 12 and an annular barrier 13. The annular barrier 13 is located at the outer edge of the upper end face of the disc portion 12, and the barrier 13 has an overflow port 13a. The annular barrier 13 and the disc portion 12 constitute an adhesive injection area. The annular barrier 13 can ensure precise control of the adhesive layer thickness, while the overflow port 13a can effectively drain excess adhesive, ensuring uniform adhesive layer thickness, thereby ensuring the bonding strength and flatness with the mirror surface, and thus improving the mirror surface forming effect.

[0025] Specifically, the outer end face of the end cap 4 is recessed below the outer end face of the annular barrier 13. In other words, the height of the end face of the end cap 4 is lower than the outer end face of the annular barrier 13 to ensure that the adhesive layer can fully contact the reflector for bonding.

[0026] Please refer to it again. Figure 3 The rod 22 is threadedly connected to the connecting seat 3. Height compensation is provided by adjusting the thread engagement length between the rod 22 and the connecting seat 3. Combined with the ball joint structure, this design can meet the mirror curvature requirements while achieving dynamic angle adjustment, resulting in a smooth mirror forming arc and significantly reducing the impact of tensile stress and forced displacement.

[0027] In this embodiment, the bottom of the connecting seat 3 is provided with a threaded post 31 to facilitate connection with the heliostat bracket.

[0028] Please combine Figures 4 to 6This application also provides a heliostat, including a heliostat support 100, a heliostat adhesive component 200, and a reflector 300. The reflector 300 is connected to the heliostat support 100 via the heliostat adhesive component 200. The heliostat adhesive component 200 includes an adhesive sheet body 1, a ball head component 2, a connecting seat 3, and an end cap 4. The adhesive sheet body 1 has a through hole 11 along its center line l. The through hole 11 includes a ball head mating section 11a and an end cap mounting section 11b. The end cap 4 is at least partially located in the end cap mounting section 11b and is connected to and fixed to the adhesive sheet body 1. The ball head component 2 includes a ball head 21 and a rod 22. The ball head 21 is located in the ball head mating section 11a and is limited between the adhesive sheet body 1 and the end cap 4. The rod 22 extends out of the adhesive sheet body 1 and is connected to the connecting seat 3. The connecting seat 3 is connected to the heliostat support 100. Furthermore, the rod 22 is threadedly connected to the connecting seat 3. In this embodiment, the ball joint 2, the adhesive sheet body 1, and the end cap 4 cooperate to form a ball hinge structure. Combined with the threaded adjustment of the rod 22 and the connecting seat 3, dynamic angle adjustment is achieved, making the mirror surface forming curvature smoother. At the same time, it provides a height compensation function, which can meet the curvature requirements of the heliostat mirror surface, so that the mirror surface forms the precise arc surface required by the design, thereby significantly improving the mirror surface forming quality. Compared with traditional heliostat adhesive parts, the heliostat adhesive part of this application significantly reduces the influence of tensile stress and forced displacement.

[0029] In this embodiment, the bottom of the connecting seat 3 is provided with a threaded post 31, the heliostat bracket 100 includes multiple secondary beams 101, the secondary beams 101 are provided with through holes, the heliostat also includes a fastener 5, and the threaded post 31 passes through the through hole and is connected to the fastener 5.

[0030] During the installation process, first, glue is injected into the annular retaining ring 13 of the assembled heliostat bonding component, and then it is bonded to the pre-set points on the back of the reflector. Press until the annular retaining ring 13 contacts the mirror surface, and remove any excess glue. The annular retaining ring 13 effectively and precisely controls the amount of glue used, avoiding waste, and its positioning ensures a uniform glue layer thickness. Repeat the above steps until the heliostat bonding component on the back of the reflector is fully bonded. Figure 5As shown. Before the reflector is installed onto the heliostat bracket 100, the sub-beam 101 of the heliostat bracket 100 has been adjusted according to the designed mirror curvature. After the adhesive is fixed, the reflector is placed on the heliostat bracket 100 with the back side facing away, so that the threaded post 31 of the heliostat adhesive piece passes through the corresponding through hole of the sub-beam 101. During the installation of the reflector onto the heliostat bracket 100, the adhesive piece body 1 will automatically rotate around the center of the ball head 21 on its respective heliostat adhesive piece due to the height difference. Affected by factors such as the gravity of the mirror surface and the structural strength of the heliostat bracket 100, the forming curvature of the mirror surface may deviate from the designed forming curvature. At this time, the height can be finely adjusted by adjusting the thread engagement length between the rod 22 and the connecting seat 3, so that the mirror surface forms the precise arc surface required by the design. During the fine adjustment process, the adhesive piece body 1 will also automatically adjust around the ball head 21. Finally, the fastener 5 is installed to fix the connecting seat 3 and the sub-beam 101. Figure 6 As shown.

[0031] In other installation methods, the glue application process is the same as described above. Before the reflector is installed onto the heliostat bracket 100, the thread engagement length of the adjusting rod 22 and the connecting seat 3 can be adjusted at corresponding points according to the designed molding curvature and different height difference requirements. This ensures that the height difference between the bonding components at the points meets the height difference requirements for mirror molding. After the glue has fixed, the reflector is placed on the heliostat bracket 100 with its back facing the side, so that the threaded post 31 of the heliostat adhesive passes through the through hole of the corresponding sub-beam 101. During the installation of the reflector onto the heliostat bracket 100, the adhesive piece body 1 will automatically rotate around the center of the ball head 21 on its respective heliostat adhesive due to the height difference, achieving dynamic adjustment. The height of the corresponding points can then be finely adjusted according to the actual molding of the mirror to form the precise arc surface required by the design. After adjustment, fasteners 5 are installed to fix the connecting seat 3 and the sub-beam 101. Figure 6 As shown.

[0032] The heliostat adhesive component provided in this embodiment breaks through the limitations of traditional rigid connections, allowing the mirror surface to adaptively fine-tune according to changes in internal stress during the fixing process. This avoids the accumulation of tensile stress caused by forced displacement, resulting in smoother mirror surface molding and significantly improving the quality of mirror surface molding. At the same time, the annular barrier 13 of the adhesive sheet body 1 limits the glue filling thickness, while the preset overflow port allows excess glue to be discharged in a directional manner, solving the problem of height difference caused by uneven glue layer thickness.

[0033] Some of the technical implementation methods described above can be combined or replaced.

[0034] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] The technical principles of this application have been described above in conjunction with specific embodiments. However, it should be noted that these descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, other specific embodiments or equivalent substitutions of this application that can be conceived by those skilled in the art without creative effort will fall within the scope of protection of this application.

Claims

1. A heliostat adhesive component, characterized in that: The assembly includes an adhesive sheet body (1), a ball head (2), a connecting seat (3), and an end cap (4). The adhesive sheet body (1) has a through hole (11) along its center line (l). The through hole (11) includes a ball head mating section (11a) and an end cap mounting section (11b). The end cap (4) is at least partially located in the end cap mounting section (11b) and is connected to and fixed to the adhesive sheet body (1). The ball head (2) includes a ball head (21) and a rod (22). The ball head (21) is located in the ball head mating section (11a) and is limited to the space between the adhesive sheet body (1) and the end cap (4). The rod (22) extends out of the adhesive sheet body (1) and is connected to the connecting seat (3). The adhesive sheet body (1) is rotatable relative to the connecting seat (3) around the ball head (21).

2. The heliostat bonding component according to claim 1, characterized in that: Compared to the end cap mounting section (11b), the ball head fitting section (11a) is closer to the connecting seat (3); the through hole (11) also includes a straight hole section (11c), the ball head fitting section (11a) is located between the straight hole section (11c) and the end cap mounting section (11b), and the ball head fitting section (11a) is connected to the straight hole section (11c) and the end cap mounting section (11b). The maximum diameter of the ball head fitting section (11a) is smaller than the minimum diameter of the end cap mounting section (11b), and the diameter of the straight hole section (11c) is equal to or smaller than the minimum diameter of the ball head fitting section (11a). The diameter of the ball head (21) is greater than the minimum diameter of the ball head mating section (11a), and the diameter of the rod (22) is less than the minimum diameter of the straight hole section (11c).

3. The heliostat bonding component according to claim 2, characterized in that: Along the centerline (l) of the adhesive sheet body (1), the ball head (21) is located between the rod (22) and the end cap (4), and the ball head (21) is spherically fitted with both the adhesive sheet body (1) and the end cap (4); The ball head (21) and the rod (22) are an integral part.

4. The heliostat adhesive component according to claim 2, characterized in that: The end cap (4) is threadedly connected to the adhesive sheet body (1), and the end of the end cap (4) is provided with a rotating groove (41).

5. The heliostat adhesive according to any one of claims 1 to 4, characterized in that: The adhesive sheet body (1) includes a disc body (12) and an annular barrier (13). The annular barrier (13) is located on the outer edge of the upper end face of the disc body (12), and the barrier (13) has an overflow port (13a).

6. The heliostat adhesive according to claim 5, characterized in that: The outer end face of the end cap (4) is recessed into the outer end face of the annular enclosure (13).

7. The heliostat adhesive according to any one of claims 1 to 4, characterized in that: The rod (22) is threadedly connected to the connecting seat (3).

8. The heliostat adhesive according to claim 7, characterized in that: The bottom of the connector (3) is provided with a threaded post (31).

9. A heliostat, characterized in that: The system includes a heliostat support (100), a heliostat adhesive component (200), and a reflector (300). The reflector (300) is connected to the heliostat support (100) via the heliostat adhesive component (200). The heliostat adhesive component (200) includes an adhesive sheet body (1), a ball head component (2), a connecting seat (3), and an end cap (4). The adhesive sheet body (1) has a through hole (11) along its center line (l). The through hole (11) includes a ball head mating section (11a) and an end cap mounting section (11b). The end cap (4) is at least partially located in the end cap mounting section (11b) and connected and fixed to the adhesive sheet body (1). The ball head (2) includes a ball head (21) and a rod (22). The ball head (21) is located in the ball head mating section (11a) and is limited between the adhesive sheet body (1) and the end cap (4). The rod (22) extends out of the adhesive sheet body (1) and is connected to the connecting seat (3). The connecting seat (3) is connected to the heliostat support (100).

10. The heliostat according to claim 9, characterized in that: The bottom of the connecting seat (3) is provided with a threaded post (31), the heliostat bracket (100) includes multiple sub-beams (101), the sub-beams (101) are provided with through holes, the heliostat also includes a fastener (5), and the threaded post (31) passes through the through hole and is connected to the fastener (5).

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