Heliostat sub-mirror mounting structure based on pouring sealant bonding and heliostat

Abstract

The utility model belongs to the technical field of heliostats, and particularly relates to a heliostat sub-mirror installation structure based on pouring sealant bonding and a heliostat, the heliostat sub-mirror installation structure comprises a purline, a connecting rod, a compression blocking piece and a plug, the purline is fixed on a torque beam of the heliostat through a truss, a groove is formed in one side of the purline, the compression blocking piece is arranged in the groove, and the connecting rod is connected with the plug. The bottom of the groove is provided with a through hole, the connecting rod penetrates through the through hole, the first end of the connecting rod is fixed in the pouring sealant in the filling space, the second end of the connecting rod extends out of the bottom face of the purline and is connected with the heliostat mirror, and the plug is arranged on the connecting rod in a sleeved mode and located at the bottom of the groove. According to the method, traditional bolt connection is replaced with pouring sealant bonding, the method of overall positioning and inverted gluing is combined, the technical problems that in the prior art, assembly errors are accumulated, the adaptability of a fastening mode is poor, and the assembly efficiency is low are solved, high-precision and stress-deformation-free assembly of the heliostat sub-mirror is achieved, and the assembly efficiency and the surface type consistency are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to heliostat technical field, more particularly, it relates to a kind of heliostat sub-mirror mounting structure and heliostat based on pouring glue bonding. BACKGROUND

[0002] In modern tower type solar thermal power generation system, heliostat is used as the core condensing unit of heat collection system, and energy is gathered on heat absorber by reflecting sunlight, so as to realize the efficient use of solar energy. Heliostat is usually composed of reflector assembly, support structure assembly, column assembly, transmission assembly and tracking control system. Among them, the reflector assembly is combined by multiple sub-mirrors to form a specific surface (such as parabolic surface or elliptical surface) to ensure that sunlight can be efficiently focused on the heat absorber.

[0003] The sub-mirror is the basic component unit of heliostat, which is usually composed of a single reflector and a mirror support. According to the form of mirror support, the sub-mirror can be divided into back plate bonding sub-mirror and mirror holder bonding sub-mirror. In the assembly process, each sub-mirror is arranged according to the designed surface type, and is fixedly connected with the support structure through the mirror connecting piece. Heliostat dynamically adjusts the posture by real-time tracking the altitude angle and azimuth angle of the sun to ensure that solar radiation is efficiently focused on the heat absorber.

[0004] In the prior art, the installation method of heliostat reflector usually adopts the following process: first, assemble the heliostat support structure, which is composed of purlin, truss and torque beam; install the heliostat sub-mirror on the top of the purlin; and use the top end surface of the support structure as the assembly reference. Then, arrange and assemble the reflecting surface of the sub-mirror and the top end surface of the support structure according to the design surface angle. The fixed connection between the heliostat sub-mirror and the support structure is usually achieved by screw connection, which adjusts and tightens the screw thread at different relative heights of the support mirror holder and the support structure to realize the installation of the sub-mirror according to the predetermined surface type. However, this installation method has obvious disadvantages:

[0005] 1. Assembly error accumulation problem: the support structure is assembled by purlin, truss and torque beam, and there are inevitable errors (such as size tolerance and flatness error) in the machining and assembly of the parts of the support structure. When the top end surface is used as the reference for the installation of the sub-mirror surface, these errors will be directly added to the overall surface of the reflector. The relative position between the sub-mirrors depends on the accuracy of the support structure, and the machining and assembly errors of the support structure will be significantly magnified after the sub-mirrors are combined, resulting in the deviation of the final reflector surface from the designed theoretical surface. The assembly error accumulation reduces the surface accuracy of the reflector, which leads to the decline of the condensing performance of the heliostat. The surface deviation also causes the shift of the focal point, reduces the energy utilization efficiency of the optical system, and affects the operation efficiency and long-term stability of the whole system.

[0006] 2. The adaptability problem of the fastening mode: the purlin is provided with a mounting hole, and the bolt on the sub-mirror is fixed with the purlin through the purlin mounting hole. This bolt connection mode requires that the horizontal plane of the purlin mounting hole and the bolt axis are perpendicular. Not only will it cause the bolt and the purlin mounting hole to interfere, but also will generate installation stress after forcibly connecting the sub-mirror with the purlin. This local internal stress will be transmitted to the mirror surface through the mirror holder, causing the mirror surface to warp or deform, causing the flatness of the sub-mirror surface to decrease, leading to the degradation of the optical performance of the reflecting mirror, directly affecting the output efficiency of the power generation system. In addition, the long-term connection reliability problem will be caused by the loosening of the bolt or uneven fastening force.

[0007] 3. Assembly efficiency problem: the surface type angle of the sub-mirror depends on the relative height between the supporting mirror holder and the heliostat supporting structure for adjustment. Each sub-mirror needs to be adjusted separately. During the adjustment process, multiple tests and measurements are required to meet the design surface requirements. The operation is complex and prone to errors. Due to the large number of mounting points, the adjustment and fixation takes a long time, especially when a large number of installations are required. The production efficiency is significantly reduced. This installation method leads to a prolonged assembly period, affecting the production progress of the overall project. The increase in labor hours increases the labor cost. In addition, the adjustment steps are complicated, increasing the risk of errors during the installation process, further affecting the precision and reliability of the reflecting mirror.

[0008] Therefore, the existing heliostat installation method has certain limitations in assembly precision, connection reliability, and production efficiency. A reference correction method is needed to reduce error accumulation during installation, while realizing efficient mirror assembly and high-reliability fastening structure to meet the current technical requirements of high precision and high efficiency of the tower type solar thermal power generation system. Practical new type content

[0009] The heliostat sub-mirror installation structure and heliostat based on the pouring adhesive bonding of the present application solve the problems of assembly error accumulation, fastening mode adaptability, and low assembly efficiency of the prior art, realize high-precision, stability, and durability of the mirror surface installation, and simplify the installation steps and improve the production efficiency.

[0010] In one aspect, the utility model provides a kind of heliostat mirror mounting structure based on pouring sealant bonding, including purlin, connecting rod, compression baffle and plug;The purlin is fixed on the torque beam of heliostat by truss, its one side is equipped with recess, the compression baffle is arranged in the recess, its side surface is closely combined with the side wall of recess, and is enclosed with the recess to form filling space, the recess bottom is equipped with through-hole, the through-hole is located below the filling space;The connecting rod is arranged in the through-hole, the filling space is filled with pouring sealant to fix the first end of the connecting rod, the second end of the connecting rod is stretched out the bottom surface of the purlin, and is connected with the mirror of heliostat;The plug is sleeved on the connecting rod and is located at the bottom of the recess, for plugging pouring sealant.

[0011] In preferred implementation mode, further, the connecting rod is axial multi-section structure, including hexagonal shaft, long screw rod, intermediate shaft shoulder and short screw rod from top to bottom.

[0012] In preferred implementation mode, further, the heliostat mirror is equipped with support mirror holder, the short screw rod is connected with support mirror holder, the short screw rod cooperates with the threaded hole of support mirror holder, and the length thereof matches the thread depth of the threaded hole;The intermediate shaft shoulder is attached to the top surface of support mirror holder.

[0013] In preferred implementation mode, further, the outer surface of long screw rod is equipped with threaded structure, and the pouring sealant is coated on the outer surface of long screw rod.

[0014] In preferred implementation mode, further, the plug includes cylindrical base, bowl-shaped top holder and mounting hole penetrating the cylindrical base and bowl-shaped top holder.

[0015] In preferred implementation mode, further, the outer diameter of top edge of bowl-shaped top holder is greater than the diameter of through-hole of purlin recess, and the inner diameter of mounting hole is less than the outer diameter of thread of long screw rod.

[0016] In preferred implementation mode, further, the purlin includes C-shaped beam and first limiting groove, the two side surfaces of C-shaped beam are equipped with first limiting groove, and the compression baffle includes baffle main body and second limiting groove matched with the first limiting groove.

[0017] In preferred implementation mode, further, the width of compression baffle is greater than the width of purlin recess.

[0018] In preferred implementation mode, further, the compression baffle is made of PET foam material.

[0019] In another aspect, the utility model further provides a kind of heliostat, comprising: the heliostat mirror mounting structure based on pouring sealant bonding described in any one of the above, torque beam, truss and reflecting mirror.

[0020] The heliostat mirror mounting structure based on the pouring sealant bonding has the advantages that the compression baffle and the plug are arranged in the purlin groove to form a closed filling space, the pouring sealant is used to fix the connecting rod, reliable connection between the connecting rod and the purlin is realized, and the problems of loosening and stress concentration in the traditional mechanical connection mode are effectively avoided.

[0021] Firstly, the heliostat mirror mounting structure based on the pouring sealant bonding of the utility model realizes reliable connection between the connecting rod and the purlin by arranging the compression baffle and the plug in the purlin groove to form a closed filling space and fixing the connecting rod by using the pouring sealant, effectively avoids the problems of loosening and stress concentration in the traditional mechanical connection mode, and simultaneously, the arrangement of the plug prevents the pouring sealant from leaking, ensures the cleanliness of the construction process and full use of the material, and thus improves the stability, durability and sealing performance of the mounting structure, and is suitable for efficient installation and long-term use of the heliostat mirror.

[0022] Secondly, in the preferred implementation mode, the heliostat mirror mounting structure of the utility model designs the connecting rod as an axial multi-section structure, and sequentially comprises a hexagonal shaft, a long screw rod, an intermediate shaft shoulder and a short screw rod, the short screw rod is tightly connected with a threaded hole of the support mirror holder, simultaneously, the intermediate shaft shoulder is attached to the top surface of the support mirror holder to form multi-point support, the intermediate shaft shoulder provides additional structural stability, prevents the connecting rod from deviating due to assembly error, the multi-point support reduces the accumulated error in the threaded connection, ensures the position accuracy of the connecting rod, and the fixed angle of the support mirror holder is consistent with the mirror surface type, and the mirror surface type error is not caused by the deviation of the threaded hole.

[0023] Thirdly, in the preferred implementation mode, the heliostat mirror mounting structure of the utility model sets a threaded structure on the outer surface of the long screw rod, and coats the pouring sealant on the outer surface, so that the pouring sealant can be more firmly embedded in the threaded gap, and the adhesion and stability of the pouring sealant are improved.

[0024] Fourthly, in the preferred implementation mode, the heliostat mirror mounting structure of the utility model sets a first limiting groove on the two side surfaces of the purlin, and sets a second limiting groove matched with the first limiting groove on the compression baffle, realizes reliable limiting connection between the compression baffle and the purlin, effectively improves the stability and firmness of the installation, simultaneously, the width of the compression baffle is greater than the width of the purlin groove, the sealing performance can be enhanced, the compression baffle is made of PET foam material, and has good flexibility and shock absorption performance.

[0025] Fifthly, the heliostat mirror mounting structure based on the pouring sealant bonding is adopted, the overall design of the torque beam, the truss and the reflecting mirror is combined, high reliability, structural stability and wind resistance of the heliostat installation are realized, the installation process is simplified, the maintenance cost is reduced, and the service life is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a perspective view of the heliostat mirror mounting structure based on the pouring sealant bonding of the embodiment of the utility model;

[0027] Figure 2 is a perspective view of the mirror and the supporting mirror holder in an assembled state of an embodiment of the present application;

[0028] Figure 3 is a perspective view of the connecting rod of an embodiment of the present application;

[0029] Figure 4 is a perspective view of the purlin of an embodiment of the present application;

[0030] Figure 5 is a perspective view of the plug of an embodiment of the present application;

[0031] Figure 6 is a perspective view of the compression baffle of an embodiment of the present application;

[0032] Figure 7 is a perspective view of the heliostat of an embodiment of the present application adopting the heliostat mirror mounting structure based on pouring sealant bonding;

[0033] Figure 8 is a perspective view of the torque beam, truss and purlin of the heliostat of an embodiment of the present application adopting the heliostat mirror mounting structure based on pouring sealant bonding.

[0034] Wherein, 1-torque beam;2-truss;3-purlin;30-C-beam;31-first limiting groove;32-through hole;4-supporting mirror holder;5-mirror;6-connecting rod;60-short screw;61-intermediate shaft shoulder;62-long screw;63-hexagonal shaft;7-compression baffle;70-baffle body;71-second limiting groove;8-plug;80-cylindrical base;81-mounting hole;82-bowl-shaped top support. DETAILED DESCRIPTION

[0035] In order to make the skilled in the art better understand the technical solutions of the present application, the present application will be further described in detail in conjunction with the drawings and embodiments.

[0036] In the description of the present application, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance;The term "multiple" refers to two or more than two, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, "connecting" can be fixedly connected, or can be detachably connected, or integrally connected;"Connected" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0038] In the description of the present application, the description of the terms "one embodiment / way", "some embodiments / ways", "specific embodiments / ways" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / way or example are contained in at least one embodiment / way or example of the present application. In the present description, the illustrative description of the above terms does not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments / ways or examples in a suitable manner.

[0039] Embodiment 1

[0040] As shown in the description Figure 1 The utility model provides a heliostat mirror mounting structure based on pouring sealant adhesion adopts pouring sealant adhesion technology to promote the stability, durability and installation precision of overall structure. The mounting structure includes purline 3, connecting rod 6, compression baffle 7 and plug 8. Purline 3 is fixed on the torsion beam of heliostat through truss, one side has recess, the recess bottom of purline 3 is equipped with through -hole, the recess is provided with compression baffle 7, and the both sides of the through -hole are arranged with compression baffle 7 respectively. The outer side of compression baffle 7 is closely combined with the side wall of recess, and forms filling space with recess together, connecting rod 6 is arranged in the through -hole, and is fixed in the filling space by pouring sealant. The plug is sleeved on the connecting rod 6 and is located at the bottom of the recess, and is used for plugging pouring sealant to prevent pouring sealant from leaking. The axis of connecting rod 6 coincides with the axis of through -hole, and a part of connecting rod 6 protrudes from the bottom surface of purline 3 and is fixed with the connecting structure of the mirror (reflector) of heliostat.

[0041] As shown in the description Figures 2-4The support mirror holder 4 is pasted on the reflecting mirror 5 of the heliostat, the connecting rod 6 adopts an axial multi-section structure, and sequentially includes a hexagonal shaft 63, a long connecting rod 62, an intermediate shaft shoulder 61 and a short connecting rod 60 from top to bottom. The short connecting rod 60 is connected with the support mirror holder 4, the support mirror holder 4 is provided with a threaded hole, the short connecting rod 60 cooperates with the threaded hole of the support mirror holder 4, the length of the short connecting rod 60 matches the thread depth of the threaded hole of the support mirror holder 4, so that the short connecting rod 60 forms a stable connection with the threaded hole of the support mirror holder 4 after being screwed, at the same time, the intermediate shaft shoulder 61 of the connecting rod 6 is attached to the top surface of the support mirror holder 4, providing additional structural support, improving the mechanical properties and shock resistance. Part of the long connecting rod 61 and the hexagonal shaft 63 are located in the filling space of the groove of the purlin 3, the filling space is filled with the filling glue through the groove opening, and the outer surface of the long connecting rod 62 is coated with the filling glue. The threaded structure on the outer surface of the long connecting rod 62 provides additional surface roughness, so that the bonding area between the filling glue and the connecting rod 6 is increased during the filling process, the bonding strength is improved, and the durability and stability of the overall structure are enhanced. The hexagonal shaft 63 is a polygonal structure at the top end of the connecting rod 6, which is used for tool cooperation installation. The hexagonal shaft 63 is designed to facilitate the connecting rod 6 to apply torque through tools, accurately screw the connecting rod 6 into the threaded hole of the support mirror holder 4, and ensure the accuracy and stability of the installation.

[0042] The plug 8 comprises a cylindrical base 80, a bowl-shaped top holder 82 arranged on the top of the cylindrical base 80, and a mounting hole 81 arranged on the central axis of the cylindrical base 80 and the bowl-shaped top holder 82. The cylindrical base 80 has sufficient size and rigidity to stabilize the installation position of the plug 8 and provide support for the bowl-shaped top holder 82. The cross-sectional shape of the bowl-shaped top holder 82 is in the shape of a bowl, and the thickness gradually decreases from bottom to top along the central axis, which ensures uniform distribution of stress during installation and avoids damage due to excessive local stress. The outer diameter of the top edge of the bowl-shaped top holder 82 is greater than the diameter of the through hole of the purlin 3 groove, so that it can effectively cover the through hole of the purlin 3 groove during the installation process. The mounting hole 81 of the plug 8 penetrates the central axis of the plug 8 and is arranged at the center of the cylindrical base 80 and the bowl-shaped top holder 82. The plug 8 is installed in the groove of the purlin 3 before the filling of the sealant, and the bowl-shaped top holder 82 seals the through hole of the purlin 3 groove by its excellent elastic properties, preventing the liquid sealant from leaking outside the purlin 3 groove. Specifically, when the sub-mirror installation structure is positioned and installed downward, the top edge of the bowl-shaped top holder 82 is in line contact with the through hole of the purlin 3 groove in the initial state, and a slight installation force can achieve preliminary sealing. As the sub-mirror support structure moves downward under the action of gravity, the top edge of the bowl-shaped top holder 82 is further compressed, and its arc cross-section gradually expands, eventually flattens the end face of the through hole of the purlin 3 groove, forming a completely covered state and achieving high sealing performance. The inner diameter of the mounting hole 81 is smaller than the thread outer diameter of the long connecting rod 62 of the connecting rod 6, so that the plug 8 has a proper damping feeling when passing through the connecting rod 6. This design can not only limit the free movement of the plug 8 during installation, but also avoid the plug 8 from falling off due to looseness, thereby further enhancing the stability and sealing effect of the installation. The bowl-shaped top holder 82 can adapt to different stress directions and distribution conditions that may occur during installation, for example, if the installation force is slightly eccentric during the sub-mirror installation process, the bowl-shaped top holder 82 will automatically adjust the stress due to its axial symmetry design, so that the sealing effect is not affected. Under the conditions of temperature change in the installation environment or dynamic change of stress (such as vibration), the bowl-shaped top holder 82 can still maintain stable sealing performance.

[0043] In the implementation of the present application, the plug 8 is made of polyurethane elastomer material, which combines excellent mechanical properties and elastic properties to ensure the stability and sealing performance of the overall structure. The Shore hardness of the polyurethane elastomer is controlled between 50A and 70A, ensuring that the material has sufficient flexibility to adapt to elastic deformation during installation, and sufficient hardness to resist external pressure. The elastic modulus is 10-30 MPa, which makes the plug produce appropriate elastic deformation under stress and quickly recover to its original state after the external force is released.

[0044] As shown in the drawingsFigures 5-6 The purlin 3 comprises a C-shaped beam 30, a first limiting groove 31 and a through hole 32. The C-shaped beam 30 is processed by rolling process from a plate material. During the assembly process of the mirror 5, the C-shaped beam 30 has an opening facing upward, which is convenient for filling the sealant. The through hole 32 in the bottom surface of the C-shaped beam 30 is arranged and disposed according to the arrangement and layout of the support mirror holder 4 on the mirror 5. The two side surfaces of the C-shaped beam 30 are provided with the first limiting groove 31 protruding inward, which is used for enhancing the structural rigidity and limiting the movement and falling of the sealant curing block. The purlin 3 is processed by rolling forming process, which is compact in structure and easy to fill the sealant. The compression baffle 7 comprises a baffle body 70 and a second limiting groove 71. The second limiting groove 71 is a groove recessed inwardly arranged on the two side portions of the baffle body 70 and matched with the first limiting groove 31, which further improves the fixing effect and prevents the baffle from moving or falling. The width of the compression baffle 7 is slightly larger than the groove width of the purlin 3, so as to ensure that the compression baffle 7 is tightly attached to the inner wall of the groove of the purlin 3 in the compressed state during installation, and a reliable seal is formed. The spacing between the adjacent compression baffles 7 determines the length of the sealant connecting and curing block, and the height thereof is equal to the groove height of the purlin 3, so as to ensure that the sealant is uniformly distributed.

[0045] In the implementation manner of the present application, the compression baffle 7 is designed with a width slightly larger than the groove width of the purlin 3. During installation, the compression baffle 7 is tightly attached to the side wall of the groove of the purlin 3 after being compressed by the elasticity thereof. When the size of the compression baffle 7 is accurate and the elastic modulus of the material thereof can satisfy the rebound force generated during installation, no additional fixing measures are needed. The restoring force of the compression baffle 7 after being compressed can ensure the stable attachment to the purlin 3. In the working condition of high vibration or large installation error, the compression baffle can be fixed in the inner wall of the purlin by increasing the adhesive, and a high-temperature-resistant and chemical-corrosion-resistant adhesive (such as silicone adhesive) is used. This method is suitable for the scene of large installation vibration or long-term stable sealing. The compression baffle 7 is made of PET foam material, which has good heat resistance and compression elasticity. The compressive strength of the compression baffle 7 needs to satisfy 0.3-0.6 MPa, so as to ensure that the compression baffle 7 maintains a stable shape after being compressed during installation and does not have permanent deformation.

[0046] The installation process of the heliostat sub-mirror mounting structure based on the sealant adhesion of the present application is as follows:

[0047] Firstly, the bowl-shaped top support of the plug is inserted into the long screw portion of the connecting rod with the bowl-shaped top support facing upward, and is pushed to the pre-installed position of the connecting rod. The compression baffles are symmetrically arranged on the two sides of the through hole of the purlin along the length direction of the purlin, and the spacing between the two compression baffles is adjusted to the design requirement. The bottom of the compression baffle is tightly attached to the inner bottom surface of the groove of the purlin, and the height of the compression baffle is consistent with the height of the groove of the purlin.

[0048] Then, align the end of the connecting rod with the threaded hole of the support mirror holder, ensure the axis of the connecting rod is coaxial with the axis of the threaded hole, slowly insert the connecting rod, ensure the connecting rod is well engaged with the threaded hole when initially screwed in, gently rotate the connecting rod to ensure it smoothly enters the threaded hole without jamming or deviation. Then further screw in the connecting rod using a hand wrench or torque wrench, check whether the connecting rod remains coaxial with the threaded hole after each rotation, without tilting or deviation. Set the torque value according to the design specification (e.g. 10-15 Nm, the specific torque value should be determined according to the design requirements), screw in the connecting rod according to the design requirements until the middle shoulder of the connecting rod fully matches the top surface of the support mirror holder.

[0049] On the surface adjustment platform, adjust the platform layout and the surface angle of the sub-mirror to meet the design requirements, and place the heliostat sub-mirror in the predetermined position, ensuring that one side of the connecting rod faces upwards and the mirror surface faces downwards. Specifically, the surface adjustment platform is an existing tooling platform, height-adjustable legs are provided at the four corners or multiple key positions of the platform, each leg is equipped with a screw adjuster for accurately adjusting the horizontal state of the platform. The platform surface is a precisely machined plane with a flatness error controlled within ±0.1 mm. A rotatable and tiltable angle adjustment mechanism is provided in the middle of the platform, which adopts a gear and rack structure or a differential screw adjustment device to facilitate accurate control of the adjustment angle. The adjustment mechanism is equipped with an angle locking device to ensure that the structure does not change after adjustment is completed. The platform is equipped with a laser level or an electronic level for real-time monitoring of the horizontal state of the platform. An additional angle measuring instrument is used to accurately measure the surface angle of the sub-mirror. Before using the platform, use the level to detect the horizontal state of the platform surface. If the platform is tilted, adjust the screw adjuster on the platform leg to restore the platform to a horizontal state. After adjustment is completed, lock the leg with a lock nut. Place the heliostat sub-mirror (mirror surface facing down) gently in the positioning groove of the platform, and temporarily fix the mirror position using the quick lock device. Use the angle adjustment module on the platform to rotate or tilt the support component of the sub-mirror to adjust the initial angle of the mirror surface. Real-time monitor the angle of the mirror surface using a laser measuring instrument or an angle instrument, and gradually adjust the angle until the design requirements are met. If the design angle precision requirement is high, use the differential screw adjustment device for gradual fine adjustment. Record the change in angle using the scale or measuring instrument on the platform to ensure that the final angle error does not exceed the design range (e.g. ±0.05°). If multiple mirror surfaces need to be installed on the platform, first adjust the layout and angle of the first mirror as a reference. According to the reference mirror, gradually adjust the layout of the other mirrors to ensure that the layout and angle of all mirrors meet the overall design requirements. After adjustment is completed, use a threaded locking device or other fixing mechanism to firmly fix the support mirror holder on the platform to prevent position deviation.

[0050] Then, using suitable lifting equipment, cooperate with fixed clamps, according to the design drawings pre-installed completed truss and purlin assembly is reversed, confirm the direction of purlin groove, slowly truss and purlin assembly is reversed to purlin groove opening upward, bottom surface downward. In the process of reversing, keep the structure stable, avoid violent shaking or impact, ensure the correct direction of the assembly. After ensuring the purlin through hole and connecting rod preliminary alignment, using lifting equipment slowly down heliostat mirror support structure, continue to slowly move purlin assembly, until each connecting rod bowl-shaped support completely with purlin bottom surface.

[0051] Finally, according to the design requirements, select the appropriate liquid pouring sealant, using special glue injection device (such as manual injection gun or automatic injection equipment), ensure the controllable injection flow, through the purlin groove opening, the injection nozzle is inserted into the filling space enclosed by the compression baffle and purlin. The assembly after injection is placed at room temperature or the curing environment required by the design. Ensure that there is no vibration and collision during curing to avoid damaging the bonding structure before the glue is completely cured. Ensure that the curing environment temperature meets the requirements of the glue instruction (such as 20-25℃), check whether the glue completely covers the outer surface of the connecting rod and the inner wall of the purlin, and there is no dead angle.

[0052] The heliostat mirror mounting structure based on pouring sealant bonding of the embodiment uses pouring sealant to cooperate with multiple assemblies to realize high-strength bonding, and the stability of the structure is significantly improved; through the precise connection of the connecting rod 6 and the support mirror holder 4 and the sealing design of the plug 8, the stability and sealing of the installation are ensured; at the same time, the optimization design of the compression baffle 7 and the purlin 3 enhances the filling effect and durability of the pouring sealant after curing. The overall scheme effectively improves the installation precision, shock resistance and reliability in long-term use, and is suitable for the mounting requirements of heliostats in variable environmental conditions.

[0053] Embodiment 2

[0054] As shown in the description accompanying drawings Figures 7-8 On the basis of embodiments 1-2, the utility model still provides a heliostat, which comprises a heliostat mirror mounting structure based on pouring sealant bonding, a torque beam 1, a truss 2 and a reflecting mirror 5.

[0055] The torque beam 1 is arranged along the axial direction and is rotationally connected to the support seat through a driving motor. The driving motor is used to adjust the pitch angle of the heliostat, so as to realize accurate sun tracking. The trusses 2 are arranged along the axial direction of the torque beam 1 at intervals and are assembled with the purlins 3 of the heliostat mirror mounting structure based on pouring sealant bonding through bolting or riveting, so as to form a stable support frame. The heliostat mirror mounting structure based on pouring sealant bonding fixes the reflecting mirror 5 in the manner of embodiments 1 and 2, and the pouring sealant bonding technology significantly improves the installation precision, stability and vibration resistance of the sub-mirror.

[0056] The heliostat provided by the utility model adopts the sub-mirror mounting structure based on the pouring adhesive bonding, combines the structural design of the torque beam and the truss, and realizes the high-precision and high-stability mirror surface mounting. Through the pouring adhesive bonding technology, not only the installation precision of the sub-mirror is improved, the internal stress and error accumulation problems caused by the traditional bolt connection are eliminated, but also the anti-vibration ability and durability of the overall structure are enhanced. Cooperating with the driving motor, the heliostat can realize the accurate pitch angle and horizontal rotation adjustment, and ensures that the reflecting mirror maintains the best light condensation performance under different sun positions. The overall structure is stable and the assembly efficiency is high, is suitable for the solar thermal power generation system under the complex environment, and has the significant application prospect and economic benefits.

[0057] The above is only the embodiment of the utility model, and the well-known specific structure and characteristics and other common knowledge in the scheme are not described too much. For those skilled in the art, obviously, the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point, the embodiment should be regarded as exemplary and non-restrictive, the scope of the utility model is defined by the appended claims instead of the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure mark in the claims should not be regarded as limiting the involved claims.

Claims

1. A mirror mounting structure of a heliostat based on potting adhesive bonding, characterized by, The mounting structure comprises a purlin (3), a connecting rod (6), a compression baffle (7) and a plug (8). The purlin (3) is fixed on the torque beam of the heliostat through a truss, and is provided with a groove on one side. The compression baffle (7) is arranged in the groove, and the side surface of the compression baffle (7) is tightly fitted with the side wall of the groove, and the side surface and the groove jointly enclose a filling space. A through hole is formed in the bottom of the groove, and the through hole is located below the filling space. The connecting rod (6) is arranged in the through hole. The filling space is filled with potting adhesive to fix the first end of the connecting rod (6). The second end of the connecting rod (6) extends out of the bottom surface of the purlin (3) and is connected with the sub-mirror of the heliostat. The plug (8) is sleeved on the connecting rod (6) and located at the bottom of the groove to block the potting adhesive.

2. The potting adhesive based mirror mounting structure of the heliostat according to claim 1, characterized in that, The connecting rod (6) is an axial multi-section structure, and comprises a hexagonal shaft (63), a long screw rod (62), an intermediate shaft shoulder (61) and a short screw rod (60) from top to bottom.

3. The potting adhesive based mirror mounting structure of the heliostat according to claim 2, characterized in that, The short screw rod (60) is connected with the support mirror holder (4), and the length of the short screw rod (60) matches the thread depth of the threaded hole of the support mirror holder (4). The intermediate shaft shoulder (61) is tightly fitted with the top surface of the support mirror holder (4).

4. The potting adhesive based mirror mounting structure of the heliostat according to claim 2, characterized in that, The outer surface of the long screw rod (62) is provided with a threaded structure, and the potting adhesive is wrapped on the outer surface of the long screw rod (62).

5. The potting adhesive based mirror mounting structure of the heliostat according to claim 2, wherein, The plug (8) comprises a cylindrical base (80), a bowl-shaped top holder (82) and a mounting hole (81) penetrating through the cylindrical base (80) and the bowl-shaped top holder (82).

6. The potting adhesive based mirror mounting structure of the heliostat according to claim 5, characterized in that, The outer diameter of the top edge of the bowl-shaped top holder (82) is greater than the diameter of the through hole of the groove of the purlin (3), and the inner diameter of the mounting hole (81) is less than the threaded outer diameter of the long screw rod (62).

7. The potting adhesive based mirror mounting structure of the heliostat according to claim 1, characterized in that, The purlin (3) comprises a C-shaped beam (30) and a first limiting groove (31). The two side surfaces of the C-shaped beam (30) are provided with the first limiting groove (31). The compression baffle (7) comprises a baffle body (70) and a second limiting groove (71) matched with the first limiting groove (31).

8. The potting adhesive based mirror mounting structure of the heliostat according to claim 7, characterized in that, The width of the compression baffle (7) is greater than the width of the groove of the purlin (3).

9. The potting adhesive based mirror mounting structure of the heliostat according to claim 1, wherein, The compression baffle (7) is made of PET foam material.

10. A heliostat, characterized in that, The mounting structure comprises: The heliostat sub-mirror mounting structure based on potting adhesive bonding, the torque beam (1), the truss (2) and the reflecting mirror (5) according to any one of claims 1-9.

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