Bonding assembly and heliostat

Abstract

The application provides a bonding assembly, which comprises a disc body, a spherical body, a spherical seat, a connecting seat and a limiting piece, one of the spherical body and the spherical seat is connected with the disc body, and the other is connected with the connecting seat, the spherical body comprises a spherical head and a connecting rod, the spherical head is arranged in the spherical seat, the limiting piece is connected with the spherical seat, the limiting piece limits the spherical head in the spherical seat, and the disc body can rotate around the center of the spherical head. The application also provides a heliostat comprising the bonding assembly. The spherical body and the spherical seat are matched, are limited by the limiting piece, form a spherical head hinge structure, and the bonding assembly can realize automatic adjustment in a mirror surface forming process, the influence of tensile stress and forced displacement is obviously reduced, the mirror surface forming is smoother, the mirror surface forming quality is improved, and then the focusing precision of a light spot is improved.

Description

Technical Field

[0001] This application belongs to the field of heliostats, specifically relating to an adhesive assembly 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 is adjusted by adjusting the screw position of the nut and the adhesive sheet body. The mirror's surface shape is then adjusted by adjusting the height of each adhesive sheet between the heliostat frame and the mirror. This adjustment method uses multiple support block components 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 an adhesive assembly including a disc portion, a ball portion, a ball seat portion, a connecting seat, and a limiting member. One of the ball portion and the ball seat portion is connected to the disc portion, and the other is connected to the connecting seat. The ball portion includes a ball head and a connecting rod. The ball head is built into the ball seat portion. The limiting member is connected to the ball seat portion and restricts the ball head within the ball seat portion. The disc portion is capable of rotating around the center of the ball head.

[0005] The bonding component provided in this application, through the cooperation of the spherical part and the spherical seat part and the limitation of the limiting member, allows the disc part to rotate around the center of the spherical head. During the mirror surface forming process, the bonding component can realize automatic dynamic angle adjustment. Compared with the current adjustment method using multiple support block components, it significantly reduces the influence of tensile stress and forced displacement, making the mirror surface forming smoother, which helps to improve the mirror surface forming quality and thus helps to improve the focusing accuracy of the light spot.

[0006] Secondly, this application provides a heliostat, including a heliostat support, an adhesive assembly, and a reflector. The reflector is connected to the heliostat support via the adhesive assembly. The adhesive assembly includes a disc portion, a spherical portion, a ball seat portion, a connecting seat, and a limiting member. One of the spherical portion and the ball seat portion is connected to the disc portion, and the other is connected to the connecting seat. The spherical portion includes a ball head and a connecting rod. The ball head is built into the ball seat portion. The limiting member is connected to the ball seat portion and restricts the ball head within the ball seat portion. The connecting seat is connected to the heliostat support, and the disc portion is connected to the back of the reflector.

[0007] The heliostat provided in this application, due to the adoption of the aforementioned adhesive components, allows the mirror surface to be adjusted at minute angles during the molding process to release internal stress, thereby achieving dynamic angle adjustment. This significantly reduces the impact of tensile stress and forced displacement, and improves the mirror surface molding 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 1a This is a structural diagram of an adhesive component provided in an embodiment of this application;

[0010] Figure 1b An exploded view of an adhesive component provided in an embodiment of this application;

[0011] Figure 1c A cross-sectional view of an adhesive component provided in an embodiment of this application;

[0012] Figure 2a This is a structural diagram of another adhesive component provided in an embodiment of this application;

[0013] Figure 2b An exploded view of another adhesive component provided in an embodiment of this application;

[0014] Figure 2c An exploded view of another adhesive component provided in an embodiment of this application;

[0015] Figure 3 This is a structural diagram of the disk body provided in an embodiment of this application;

[0016] Figure 4 This is a structural diagram of the heliostat provided in an embodiment of this application;

[0017] Figure 5 This is a structural diagram of a reflector with adhesive components provided in an embodiment of this application;

[0018] Figure 6 This is a connection diagram of the adhesive assembly used in an embodiment of this application to connect the reflector and the sub-beam. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] 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 is adjusted by adjusting the screw position of the nut and the adhesive sheet body. The mirror's surface shape is then adjusted by adjusting the height of each adhesive sheet between the heliostat frame and the mirror. This adjustment method uses multiple support block components 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.

[0022] To resolve any of the above issues, please refer to [link / reference]. Figures 1a to 2c This application provides an adhesive assembly, including a disc portion 1, a ball portion 2, a ball seat portion 3, a connecting seat 4, and a limiting member 5. One of the ball portion 2 and the ball seat portion 3 is connected to the disc portion 1, and the other is connected to the connecting seat 4. The ball portion 2 includes a ball head 21 and a connecting rod 22. The ball head 21 is built into the ball seat portion 3. The limiting member 5 is connected to the ball seat portion 3 and restricts the ball head 21 within the ball seat portion 3. The disc portion 1 is capable of rotating around the center of the ball head 21. This application utilizes the cooperation between the spherical part 2 and the ball seat part 3, with the limiting member 5 limiting the position, so that the disk part 1 can rotate around the center of the ball head 21 without displacement. During the mirror forming process of the heliostat, the bonding component can achieve automatic adjustment. Compared with the current adjustment method using multiple support block components, it significantly reduces the influence of tensile stress and forced displacement, making the mirror forming smoother, which helps to improve the mirror forming quality and thus helps to improve the focusing accuracy of the light spot.

[0023] Specifically, the spherical part 2, the ball seat part 3, and the limiting member 5 constitute a ball hinge structure. The ball seat part 3 is provided with a countersunk hole 31, the bottom surface of which mates with the spherical surface of the ball head 21. Through the ball hinge structure formed by the spherical part 2, the ball seat part 3, and the limiting member 5, and the mate between the ball seat part 3 and the spherical surface of the ball head 21, the disc part 1 can smoothly rotate relative to the connecting seat 4 around the center of the ball head 21. The diameter of the countersunk hole 31 is greater than or equal to the diameter of the ball head 21, preferably slightly larger than the diameter of the ball head 21, to facilitate the assembly of the spherical part 2 and the ball seat part 3.

[0024] Furthermore, the ball head 21 is connected to the connecting rod 22, and the limiting member 5 is located on the side of the ball head 21 closest to the connecting rod 22; the minimum distance between the limiting members 5 is less than the diameter of the ball head 21, so as to restrict the ball head 21 from being located within the countersunk hole 31 and prevent the ball head 21 from disengaging from the ball seat portion 3. The diameter of the connecting rod 22 is smaller than the diameter of the ball head 21, and the connecting rod 22 extends a certain distance beyond the end face of the ball seat portion 3, allowing the ball portion 2 to have a certain rotational space relative to the ball seat portion 3 to meet adjustment requirements. In this embodiment, the diameter of the ball head 21 represents the maximum diameter passing through the center of the ball head 21.

[0025] Please refer to it again. Figures 1a to 1c In one embodiment, the limiting member 5 is a cylindrical pin 51. Two cylindrical pins 51 are arranged in parallel. The middle section of each cylindrical pin 51 is embedded within the countersunk hole 31, and the middle section of each cylindrical pin 51 contacts the side of the ball head 21 near the connecting rod 22. The distance between the contact points of the two cylindrical pins 51 and the ball head 21 is less than the diameter of the ball head 21, thereby limiting the movement of the ball head 21. In this embodiment, the cylindrical pins 51 are not arranged radially along the ball seat portion 3. Furthermore, the outer circumferential arc surface of the cylindrical pin 51 contacts the spherical surface of the ball head 21, which facilitates smoother rotation.

[0026] Please refer to it again. Figures 2a to 2c In another embodiment, the limiting member 5 is a stud 52. Multiple studs 52 are arranged in a ring around the center line l of the ball seat portion 3. The studs 52 are arranged radially along the ball seat portion 3. The inner end of each stud 52 extends into the countersunk hole 31 and faces the side of the ball head 21 near the connecting rod 22, and can contact the ball head 21. The diameter of the circle formed by the contact points of each stud 52 and the ball head 21 is smaller than the diameter of the ball head 21, thereby limiting the movement of the ball head 21. In this embodiment, the inner end of the stud 52 has a spherical structure, contacting the spherical surface of the ball head 21, making rotation smoother.

[0027] Please refer to it again. Figures 1a to 1cIn some embodiments, the ball portion 2 is connected to the disc portion 1, and the ball seat portion 3 is connected to the connecting seat 4. Specifically, the connecting rod 22 connects the ball head 21 and the disc portion 1, and the ball head 21, the connecting rod 22, and the disc portion 1 are a single unit.

[0028] Please refer to it again. Figures 2a to 2c In other embodiments, the ball seat 3 is connected to the disc body 1, and the ball seat 3 and the disc body 1 are integral parts; the ball body 2 is connected to the connecting seat 4; and the connecting rod 22 connects the ball head 21 and the connecting seat 4, and the ball head 21 and the connecting rod 22 are integral parts.

[0029] In the above embodiments, the method of forming the integral part is not specifically limited. It can be formed by machining a blank into an integral part, or multiple parts can be connected and fixed into an integral part by welding, bonding or other methods. Since there are many possible implementation methods, they will not be listed here.

[0030] In the above embodiments, Figures 1a to 1c The ball seat 3 shown is connected to the connecting seat 4, or, Figures 2a to 2c The connecting rod 22 and the connecting seat 4 shown are preferably connected by a thread. A height compensation function is provided by adjusting the thread engagement length between the ball joint 3 and the connecting seat 4 / the thread engagement length between the connecting rod 22 and the connecting seat 4, so that the height of the adhesive assembly can meet the mirror height requirement at the current location. Through the ball joint structure of the adhesive assembly, combined with the height compensation function of the threaded adjustment, the mirror surface can achieve dynamic angle adjustment during the molding process, while also meeting height adjustment requirements over a wider range, thus significantly improving the mirror molding effect.

[0031] Of course, the connection between the ball seat 3 and the connecting seat 4, or the connection between the connecting rod 22 and the connecting seat 4, can also be a non-adjustable connection, such as an integral part, welding, bonding, etc. Its height compensation function is slightly inferior to that of the threaded connection.

[0032] Please refer to the following: Figure 3 In this embodiment, the disc body 1 includes a disc support 11 and an annular barrier 12. The annular barrier 12 is located on the side of the disc support 11 away from the spherical part 2. The disc support 11 and the annular barrier 12 are integral parts. The annular barrier 12 is also provided with an overflow port 12a. In this embodiment, the annular barrier 12 is arranged in a ring shape on the upper end surface of the disc support 11. The area inside the annular barrier 12 constitutes the glue injection area. The arrangement of the annular barrier 12 can ensure precise control of the glue layer thickness. At the same time, the overflow port 12a can effectively drain excess glue, thereby ensuring the bonding strength and flatness with the mirror surface, and thus improving the mirror surface forming effect.

[0033] Please refer to the following: Figures 4 to 6This application also provides a heliostat, including a heliostat support 100, an adhesive assembly 200, and a reflector 300. The reflector 300 is connected to the heliostat support 100 via the adhesive assembly 200. The adhesive assembly 200 includes a disc portion 1, a spherical portion 2, a ball seat portion 3, a connecting seat 4, and a limiting member 5. One of the spherical portion 2 and the ball seat portion 3 is connected to the disc portion 1, and the other is connected to the connecting seat 4. The spherical portion 2 includes a ball head 21 and a connecting rod 22. The ball head 21 is built into the ball seat portion 3. The limiting member 5 is connected to the ball seat portion 3 and restricts the ball head 21 within the ball seat portion 3. The connecting seat 4 is connected to the heliostat support 100, and the disc portion 1 is connected to the back of the reflector 300. The heliostat provided in this application, due to the adoption of the above-mentioned adhesive components, the ball-head hinge structure composed of the ball part 2, the ball seat part 3 and the limiting member 5, facilitates the installation of the reflector 300. During the installation process, the disk part 1 bonded to the reflector 300 can be rotated at a small angle along the curvature of the heliostat bracket 100 to release internal stress, realize dynamic angle adjustment, significantly reduce the influence of tensile stress and forced displacement, and improve the mirror surface forming quality.

[0034] For more details, please refer to [link / reference] again. Figures 4 to 6 The connecting seat 4 is provided with a threaded post 41 on the side away from the spherical part 2. The heliostat bracket 100 includes multiple sub-beams 101, each sub-beam 101 is provided with a through hole. The heliostat also includes a fastener 6. The threaded post 41 passes through the through hole and is connected to the fastener 6 to fix the connecting seat 4.

[0035] During the installation process, first, glue is injected into the annular retaining wall 12 of the assembled adhesive component, and then it is bonded to the pre-set points on the back of the reflector 300. Press until the annular retaining wall 12 contacts the mirror surface. Excess glue can overflow through the overflow port 12a. The annular retaining wall 12 effectively and precisely controls the amount of glue used, avoiding waste, and ensures uniform glue layer thickness by limiting the glue application. Repeat the above steps until the adhesive components on the back of the reflector are bonded to the designated points. 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 applied, the reflector is placed on the heliostat bracket 100 with its back side facing up, so that the threaded post 41 of the adhesive assembly passes through the through hole in the sub-beam 101. During the installation of the reflector onto the heliostat bracket 100, the disc part 1 in the adhesive assembly at each point will automatically rotate around the center of its respective ball head 21 due to the height difference, realizing dynamic adjustment. Due to factors such as the gravity of the mirror surface and the structural strength of the heliostat support 100, the curvature of the mirror surface may deviate from the designed curvature. This can be fine-tuned by adjusting the threaded connection length between the ball seat 3 and the connecting seat 4, or the threaded connection length between the connecting rod 22 and the connecting seat 4, to ensure the mirror surface forms the precise arc required by the design. During this fine-tuning process, the disk body 1 will also automatically adjust around the center of the ball head 21. After adjustment, fasteners 6 are installed to secure the connecting seat 4 and the sub-beam 101. Figure 6 As shown.

[0036] In other installation methods, the gluing process is the same as described above. Before the reflector is installed onto the heliostat bracket 100, the thread engagement length of the connecting seat 4 and the ball seat 3, and the thread engagement length of the connecting rod 22 and the connecting seat 4, can be adjusted at corresponding points according to the designed molding curvature and different height difference requirements. This ensures that the height difference of the bonding components between 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 away, so that the threaded post 41 of the bonding component passes through the through hole of the sub-beam 101. During the installation of the reflector onto the heliostat bracket 100, the disc part 1 in the bonding component at each point will automatically rotate around the center of its respective ball head 21 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 6 are installed to fix the connecting seat 4 and the sub-beam 101. Figure 6 As shown.

[0037] The bonding 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 molding process. This avoids the accumulation of tensile stress caused by forced displacement, resulting in smoother mirror molding and significantly improving the quality of mirror molding. At the same time, the setting of the annular barrier 12 limits the glue filling thickness, while the preset overflow port 12a allows excess glue to be discharged in a directional manner, solving the height difference problem caused by uneven glue layer thickness. In addition, the adjustable design of the ball seat 3 connecting to the connecting seat 4 and the connecting rod 22 connecting to the connecting seat 4 provides a height compensation function, enabling the mirror molding quality to better meet the design requirements.

[0038] Some of the technical implementation methods described above can be combined or replaced.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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. An adhesive assembly, characterized in that: The device includes a disc body (1), a ball body (2), a ball seat (3), a connecting seat (4), and a limiting member (5). One of the ball body (2) and the ball seat (3) is connected to the disc body (1), and the other is connected to the connecting seat (4). The ball body (2) includes a ball head (21) and a connecting rod (22). The ball head (21) is built into the ball seat (3). The limiting member (5) is connected to the ball seat (3) and restricts the ball head (21) within the ball seat (3). The disc body (1) is able to rotate around the center of the ball head (21).

2. The adhesive assembly according to claim 1, characterized in that: The ball part (2), the ball seat part (3) and the limiting member (5) constitute a ball hinge structure. The ball seat part (3) is provided with a countersunk hole (31), and the bottom surface of the countersunk hole (31) is engaged with the spherical surface of the ball head (21). The diameter of the countersunk hole (31) is greater than or equal to the diameter of the ball head (21).

3. The adhesive assembly according to claim 2, characterized in that: The ball head (21) is connected to the connecting rod (22), and the limiting member (5) is located on the side of the ball head (21) close to the connecting rod (22); the minimum distance between the limiting members (5) is less than the diameter of the ball head (21); The diameter of the connecting rod (22) is smaller than the diameter of the ball head (21).

4. The adhesive assembly according to claim 3, characterized in that: The limiting member (5) adopts a cylindrical pin (51). There are two cylindrical pins (51) arranged in parallel. The middle section of the cylindrical pin (51) is built into the countersunk hole (31), and the middle section of the cylindrical pin (51) contacts the side of the ball head (21) near the connecting rod (22).

5. The adhesive assembly according to claim 3, characterized in that: The limiting member (5) is a stud (52). There are multiple studs (52) and they are arranged in a ring around the center line (l) of the ball seat (3). The studs (52) are arranged radially along the ball seat (3). The inner end of the stud (52) extends into the countersunk hole (31) and is directly opposite the side of the ball head (21) near the connecting rod (22). The inner end of the stud (52) is spherical.

6. The adhesive assembly according to any one of claims 1 to 5, characterized in that: The ball part (2) is connected to the disk part (1), and the connecting rod (22) connects the ball head (21) and the disk part (1). The ball head (21), the connecting rod (22) and the disk part (1) are a single piece. The ball seat (3) is threadedly connected to the connecting seat (4).

7. The adhesive assembly according to any one of claims 1 to 5, characterized in that: The ball seat (3) is connected to the disc body (1), and the ball seat (3) and the disc body (1) are an integral part. The ball body (2) is connected to the connecting seat (4). The connecting rod (22) connects the ball head (21) and the connecting seat (4), and the ball head (21) and the connecting rod (22) are an integral part. The connecting rod (22) is threadedly connected to the connecting seat (4).

8. The adhesive assembly according to any one of claims 1 to 5, characterized in that: The disc body (1) includes a disc support (11) and an annular barrier (12). The annular barrier (12) is located on the side of the disc support (11) away from the sphere (2). The disc support (11) and the annular barrier (12) are an integral piece. The annular barrier (12) is also provided with an overflow outlet (12a).

9. A heliostat, characterized in that: The system includes a heliostat support (100), an adhesive assembly (200), and a reflector (300). The reflector (300) is connected to the heliostat support (100) via the adhesive assembly (200). The adhesive assembly (200) includes a disc portion (1), a sphere portion (2), a ball seat portion (3), a connecting seat (4), and a limiting member (5). One of the sphere portion (2) and the ball seat portion (3) is connected to the disc portion (1), and the other is connected to the reflector. The connecting seat (4) is connected to the ball part (2), which includes a ball head (21) and a connecting rod (22). The ball head (21) is built into the ball seat part (3). The limiting member (5) is connected to the ball seat part (3) and the limiting member (5) restricts the ball head (21) within the ball seat part (3). The connecting seat (4) is connected to the heliostat bracket (100), and the disk part (1) is connected to the back of the reflector (300).

10. The heliostat according to claim 9, characterized in that: The connecting seat (4) is provided with a threaded post (41) on the side away from the sphere (2). The heliostat bracket (100) includes multiple sub-beams (101), each sub-beam (101) is provided with a through hole. The heliostat also includes a fastener (6). The threaded post (41) passes through the through hole and is connected to the fastener (6).

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