A plane mirror support mechanism for a tower solar thermal power generation concentrator

Abstract

The present invention provides a plane mirror support mechanism for a tower solar thermal power generation concentrator, which relates to the technical field of solar thermal power generation. It can ensure that the plane mirror and the frame are fixed to each other in a free state, and the plane mirror is not easily deformed by external forces, improving the mirror surface accuracy. The support structure includes a stamping tray, a tray column, and a clamping block. The stamping tray is connected to one end of the tray column, and the other end of the tray column is detachably connected to the concentrator frame through the clamping block. The stamping tray is used to connect with the plane mirror of the concentrator, and several support structures correspond to one plane mirror. The tray column is inserted into the clamping block, and the clamping block is connected to the concentrator frame by bolts. A connecting piece is provided at the bottom of the stamping tray, and a mating hole is provided on the connecting piece. One end of the tray column connected to the stamping tray is provided with a bent portion. The bent portion is inserted into the mating hole, and an anti-detachment structure is provided at the end of the bent portion. The technical solution provided by the present invention is applicable to the process of installing and using the concentrator.

Description

Technical Field

[0001] The present invention relates to the technical field of solar thermal power generation, and in particular to a plane mirror support mechanism for a tower-type solar thermal power generation concentrator.

Background Art

[0002] Solar thermal power generation is an important aspect of solar energy utilization. Currently, there are mainly four types: trough type, tower type, Fresnel type, and dish type. The basic process is as follows: using a solar concentrator (also known as a heliostat) to track the sun and converge solar radiation to an endothermic device, thereby obtaining high-temperature thermal energy, and then using the thermal energy for conventional thermal power generation or other medium- and high-temperature applications. The solar concentrator (i.e., the heliostat) is a key component of the solar thermal power generation and solar medium- and high-temperature utilization systems.

[0003] Regarding the installation method of the solar concentrator, the existing technologies mainly include the following: 1. The plane mirror is bonded to the metal backplane and then fixed to the concentrator frame; 2. The plane mirror is bonded to the metal support, and the fixing rod on the metal support is rigidly fixed to the concentrator frame; 3. The plane mirror is bonded to the plastic support, and a screw that can move slightly in a small range is installed on the plastic support, and the screw is then bonded to the concentrator frame with glue.

[0004] The above methods all have deficiencies. For example, when the plane mirror is bonded to the metal backplane, the bonding process requirements are relatively high, and the frosting area on the mirror surface is large in winter; when the plane mirror is bonded to the metal support and the concentrator frame is rigidly connected, since each connection position is rigidly fixed, it is easy to cause mirror deformation; when the plane mirror is bonded to the plastic support and the concentrator frame is connected by pouring glue, due to the long solidification time of the glue, the production efficiency is low.

[0005] Therefore, it is necessary to study a plane mirror support mechanism for a tower-type solar thermal power generation concentrator to address the deficiencies of the existing technologies and solve or alleviate one or more of the above problems.

Summary of the Invention

[0006] In view of this, the present invention provides a plane mirror support mechanism for a tower-type solar thermal power generation concentrator, which can effectively improve the production efficiency, and can ensure that the plane mirror and the concentrator frame are fixed to each other in a free state, and the plane mirror surface shape is not easily deformed by external forces, and can ensure the mirror accuracy to the greatest extent.

[0007] On the one hand, the present invention provides a plane mirror support mechanism for a tower-type solar thermal power generation concentrator, characterized in that the support structure includes a stamping tray, a tray column, and a clamping block; one end of the stamping tray is connected to one end of the tray column, and the other end of the tray column is detachably connected to the concentrator frame through the clamping block; the stamping tray is connected to the plane mirror of the concentrator, and several such support structures correspond to one plane mirror.

[0008] For the aspects and any possible implementation manners described above, a further implementation manner is provided. The specific connection manner of the detachable connection is as follows: The tray column is inserted into the clamping block, and the clamping block is connected to the concentrator frame body by bolts.

[0009] For the aspects and any possible implementation manners described above, a further implementation manner is provided. The clamping block is a structure with a predetermined length and a U-shaped end face. A tray column mounting hole along the length direction of the clamping block is provided at the non-opening end of the U shape, and the tray column is inserted into the tray column mounting hole; Corresponding bolt mounting holes are provided on the two side walls of the clamping block. During installation, the bolts are inserted into the screw mounting holes to clamp the tray column and fix it to the concentrator frame body.

[0010] For the aspects and any possible implementation manners described above, a further implementation manner is provided. The specific manner of connecting the clamping block to the concentrator frame body is as follows: After the bolts pass through the two bolt mounting holes on the clamping block, their ends then pass through the mounting holes and gaskets provided on the concentrator frame body, and are threadedly connected to nuts.

[0011] For the aspects and any possible implementation manners described above, a further implementation manner is provided. By adjusting the pre-tightening force of the bolts, the clamping force of the clamping block is adjusted to realize the adjustment of the mounting direction of the tray column.

[0012] For the aspects and any possible implementation manners described above, a further implementation manner is provided. A connecting piece is provided at the bottom of the stamping tray, and a mating hole is provided on the connecting piece; One end of the tray column connected to the stamping tray is provided with a bent portion; The bent portion is inserted into the mating hole, and an anti-detachment structure is provided at the end of the bent portion.

[0013] For the aspects and any possible implementation manners described above, a further implementation manner is provided. The anti-detachment structure is as follows: A pin hole is provided at the end of the bent portion, and a split pin for preventing the tray column from falling off is inserted into the pin hole.

[0014] For the aspects and any possible implementation manners described above, a further implementation manner is provided. The anti-detachment structure is as follows: A deformation structure for preventing the tray column from falling off is provided at the end of the bent portion.

[0015] For the aspects and any possible implementation manners described above, a further implementation manner is provided. The deformation structure is an extrusion deformation structure or a bending deformation structure.

[0016] For the aspects and any possible implementation manners described above, a further implementation manner is provided. The plane mirror and the stamping tray are connected by bonding.

[0017] In the aspects and any possible implementation manners as described above, a further implementation manner is provided, where the clearance width between the tray column and the stamping tray is 0.03 - 0.08 mm; the axial movement range of the bent portion of the tray column within the fitting hole is 5 - 8 mm.

[0018] Compared with the prior art, the present invention can achieve the following technical effects: The present application uses a stamping tray, which has high production efficiency and good product consistency; the cooperation of the thin-walled hole and the shaft is used to achieve multi-degree-of-freedom adjustment, which can ensure that the flat mirror and the concentrator frame are fixed to each other in a free state, and the flat mirror surface shape will not be deformed due to external forces; the clamping block is used to fix the tray column on the concentrator frame, which can not only fix the tray column at any angle, but also ensure the firmness of the connection, and can also avoid the deflection of the tray column caused by tightening the bolt.

[0019] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned technical effects simultaneously.

Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of a flat mirror support mechanism for a tower-type solar thermal power generation heliostat provided by an embodiment of the present invention;

[0022] Figure 2 It is a side view of the structural diagram shown in Figure 1 ;

[0023] Figure 3 It is a schematic structural diagram of a stamping tray provided by an embodiment of the present invention;

[0024] Figure 4 It is a schematic structural diagram of a clamping block provided by an embodiment of the present invention;

[0025] Figure 5 It is a schematic structural diagram of a tray column provided by an embodiment of the present invention.

[0026] Among them, in the figure:

[0027] 1, flat mirror; 2, stamping tray; 3, split pin; 4, tray column; 5, clamping block; 6, concentrator frame.

Detailed Embodiments

[0028] To better understand the technical solution of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] It should be clear that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0030] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms of "a", "the", and "said" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0031] The purpose of the present invention is to overcome the deficiencies in the prior art, such as high requirements for the bonding process, large frosting area on the mirror surface in winter, easy deformation of the mirror surface, and low production efficiency, so as to provide a flat mirror support mechanism that can effectively improve production efficiency and ensure the accuracy of the mirror surface. To achieve the above purpose, the present invention provides a flat mirror support mechanism for a heliostat of tower-type solar thermal power generation, including: a stamping tray 2, a split pin 3, a tray column 4, and a clamping block 5; as Figure 1 and Figure 2 shown, one end of the stamping tray is movably connected to one end of the tray column, and the other end of the tray column is detachably connected to the concentrator frame 6 through the clamping block; the above support structure is used to connect with the concentrator frame 6 and the flat mirror 1, and several support structures correspond to one flat mirror.

[0032] Among them, the flat mirror 1 and the stamping tray 2 are bonded together with two-component silica gel; the stamping tray 2 and the tray column 4 are connected through a mating hole, one end of the mating hole is fixed at the bottom of the stamping tray 2, and one end of the tray column 4 is a bent structure, that is, a bent portion 41, and a pin hole 42 is provided at the end of the bent portion. As Figure 3 shown, after the bent portion of the tray column 4 is inserted into the mating hole, the split pin 3 is inserted into the pin hole 42 for fixation, and the split pin 3 is used to prevent the tray column 4 and the stamping tray 2 from separating; the other end of the tray column 4 is connected to the clamping block 5, the clamping block 5 is passed through by a bolt and fixed with a nut, and the pre-tightening force of the bolt is adjusted to control the clamping force of the clamping block 5; the clamping block 5 is fixed on the concentrator frame 6 with bolts.

[0033] In the above technical solution, the plane mirror 1 and the stamping tray 2 are bonded together using two-component silicone. This process can be completed on the plane mirror production line. Using special tooling or a manipulator to ensure the accurate position of the stamping tray, and then it is packaged and transported to the project site for standby. The stamping tray 2 is formed by one-time stamping using a combined die, with high production efficiency and good product consistency. The specific components of the two-component silicone are not limited, and those commercially available and capable of realizing the bonding function in this field can be used.

[0034] The stamping tray 2 and the tray column 4 are connected through the mating hole 71 on the connecting piece 7. The thickness of the stamping tray 2 is 0.6 - 1.5 mm, and the gap between the tray column and the stamping tray is within the range of 0.03 - 0.08 mm (the mating gap between the tray column and the stamping tray limits the up and down movement of the two). This can ensure that there is no obvious movement in the radial direction of the tray column 4 (the radial direction refers to the diameter direction of the bent part of the tray column), and there is a movement of 5 - 8 mm in the axial direction (the axial direction refers to the length direction of the bent part of the tray column). At the same time, it can ensure that the tray column has enough swing. The cooperation between the thin-walled hole (i.e., the connecting piece and the mating hole on it) and the shaft can achieve multi-degree-of-freedom adjustment, so as to compensate for the bonding position error of the stamping tray 2 and the welding error of the concentrator frame 6, and ensure that the plane mirror and the concentrator frame 6 are fixed to each other in a free state, and the plane mirror surface shape will not be deformed due to external forces. The connecting piece 7 is a semi-circular plate, the straight part is fixedly connected to the stamping tray 2, the arc part is downward, and the whole connecting piece is perpendicular to the stamping tray 2. The mating hole 71 is a through hole and is arranged on the connecting piece, as Figure 4 shown.

[0035] The split pin 3 is used to prevent the separation of the tray column 4 and the stamping tray 2. The split pin is just one way of anti-disengagement. Other forms such as extrusion deformation and bending deformation can also be used for the anti-disengagement connection of the tray column 4 and the stamping tray 2. Extrusion deformation means that after the bent part of the tray column is inserted into the mating hole, its end is flattened by extrusion, so that it cannot fall out of the mating hole. Bending deformation means that after the bent part of the tray column is inserted into the mating hole, the end of the bent part is bent by a tool, and then it cannot fall out of the mating hole.

[0036] The bottom end of the tray column 4 is connected to the clamping block 5. As Figure 5 shown, the clamping block 5 is an overall U-shaped body with a certain length. The non-open end of the U-shape is provided with a tray column mounting hole 51 along the entire length direction of the U-shaped body. During installation, the end of the tray column 4 passes through the tray column mounting hole 51. There are bolt mounting holes 52 with opposite positions on the two side walls of the U-shaped body for passing bolts. By adjusting the pre-tightening force of the bolts to control the clamping force of the clamping block, it can not only fix the tray column at any angle, ensure the firm connection, but also avoid the deflection of the tray column driven by tightening the bolts to ensure the relative position of the two remains unchanged, and finally achieve a high-precision plane mirror surface shape.

[0037] The clamping block is fixed on the concentrator frame 6 with bolts to ensure the relative position of the two remains unchanged, ultimately achieving a high-precision flat mirror surface profile.

[0038] In actual application, the flat mirror is first placed on a finely machined platform. The flatness of the platform is much higher than the surface profile accuracy required for the flat mirror. The concentrator frame 6 is placed on the equal-height blocks around the flat mirror to ensure the relative position between the concentrator frame 6 and the flat mirror. Then, the tray column 4 is passed through the small holes in the stamping tray 2, and an opening pin is installed to prevent the tray column 4 from separating from the stamping tray. The clamping block, bolts, nuts, and washers are installed, and the bolts are tightened. One flat mirror support mechanism is installed. Then, the support mechanisms at other positions are installed in sequence. After all the support mechanisms are installed, it is transferred to the next station for standby. Depending on the different mirror sizes and application scenarios, the number of flat mirror support mechanisms used will be different, and the designers can arrange them flexibly according to needs.

[0039] The advantages of the present invention are as follows:

[0040] 1. The present invention uses a stamping tray, which has high production efficiency and good product consistency.

[0041] 2. The present invention uses the cooperation of thin-walled holes and shafts to achieve multi-degree-of-freedom adjustment, ensuring that the flat mirror and the concentrator frame are fixed to each other in a free state, and the flat mirror surface profile will not be deformed due to external forces.

[0042] 3. The present invention uses a clamping block to fix the tray column on the concentrator frame, which can not only fix the tray column at any angle, but also ensure the firmness of the connection, and can also avoid the deflection of the tray column caused by tightening the bolts.

[0043] The above has introduced in detail a flat mirror support mechanism for a tower-type solar thermal power generation concentrator provided by the embodiments of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

[0044] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not distinguish components by the difference in names, but by the difference in functions of the components. As used throughout the specification and claims, the terms "comprising" and "including" are open-ended terms and should be interpreted as "comprising / including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problems within a certain error range and basically achieve the technical effects. The following description in the specification is a preferred embodiment for implementing the present application, but the description is for the purpose of explaining the general principles of the present application and not for limiting the scope of the present application. The protection scope of the present application shall be subject to that defined by the appended claims.

[0045] It should also be noted that the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a commodity or system including a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such commodity or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the commodity or system including said element.

[0046] It should be understood that the term "and / or" used herein is merely an associative relationship describing associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0047] The above description shows and describes several preferred embodiments of the present application. However, as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the application concept described herein through the above teachings or the technology or knowledge in the relevant field. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present application shall fall within the protection scope of the appended claims of the present application.

Claims

1. A plane mirror support mechanism for a tower solar thermal power generation concentrator, characterized in that, The plane mirror support mechanism includes a stamping tray, a tray column, and a clamping block; the stamping tray is connected to one end of the tray column, and the other end of the tray column is detachably connected to the condenser frame through the clamping block; the stamping tray is connected to the plane mirror of the condenser, and several such plane mirror support mechanisms correspond to one plane mirror. The specific connection method of the detachable connection is as follows: the tray column is inserted into the clamping block, and the clamping block and the condenser frame are connected by bolts. The clamping block is a structure with a predetermined length and a U-shaped end face. The non-opening end of the U shape is provided with a tray column mounting hole along the length direction of the clamping block, and the tray column is inserted into the tray column mounting hole; corresponding bolt mounting holes are provided on the two side walls of the clamping block. The specific connection method of the clamping block and the condenser frame is as follows: after the bolts pass through the two bolt mounting holes on the clamping block, their ends then pass through the mounting holes and gaskets provided on the condenser frame, and are threadedly connected to nuts. By adjusting the pre-tightening force of the bolts, the clamping force of the clamping block is adjusted to achieve the adjustment of the installation direction of the tray column. A connecting piece is provided at the bottom of the stamping tray, and a mating hole is provided on the connecting piece. The mating hole is a thin-walled hole; a bent portion is provided at one end of the tray column connected to the stamping tray; the bent portion is inserted into the mating hole, and an anti-detachment structure is provided at the end of the bent portion. The gap between the tray column and the stamping tray is 0.03 - 0.08 mm, and the bent portion of the tray column has a movement amount of 5 - 8 mm in the length direction.

2. The planar mirror support mechanism for a tower solar thermal power generation concentrator according to claim 1, characterized in that The anti-detachment structure is as follows: a pin hole is provided at the end of the bent portion, and a split pin for preventing the tray column from falling off is inserted into the pin hole.

3. The planar mirror support mechanism for a tower solar thermal power generation concentrator according to claim 1, characterized in that, The anti-detachment structure is as follows: a deformation structure for preventing the tray column from falling off is provided at the end of the bent portion.

4. The flat mirror support mechanism for a tower solar thermal power generation concentrator according to claim 3, characterized in that, The deformation structure is an extrusion deformation structure or a bending deformation structure.

5. The planar mirror support mechanism for a tower solar thermal power concentrator according to claim 1, wherein The plane mirror and the stamping tray are connected by bonding.

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