CN210374115U

CN210374115U - Secondary reflector secondary structure device for tower type photo-thermal power generation

Info

Publication number: CN210374115U
Application number: CN201921326521.0U
Authority: CN
Inventors: 游思梁; 周俊兵; 万灵
Original assignee: Jiangsu Xinchen Solar Thermal Technology Co ltd
Current assignee: Jiangsu Xinchen Solar Thermal Technology Co ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-04-21
Anticipated expiration: 2029-08-16

Abstract

The utility model relates to a secondary reflector secondary structure device of tower light and heat electricity generation, construct subassembly (1), secondary reflector subassembly (2) and spring tensioning and spacing coupling assembling (3) including inferior structure steel, secondary reflector subassembly (2) on be equipped with inferior structure steel and construct subassembly (1), be connected through spring tensioning and spacing coupling assembling (3) between inferior structure steel constructs subassembly (1) and secondary reflector subassembly (2). The utility model discloses both can make the secondary reflector can realize the mirror surface freely extending under the high temperature operating mode, can realize the high rigidity under the strong wind operating mode again, improve processing preparation, assembly, efficiency of construction and reduce the technology degree of difficulty simultaneously, reach the effect that improves secondary mirror structure face type precision and reduce cost.

Description

Secondary reflector secondary structure device for tower type photo-thermal power generation

[ technical field ] A method for producing a semiconductor device

The utility model relates to a secondary reflection mirror secondary structure device of tower solar-thermal power generation belongs to solar-thermal power generation technical field.

[ background of the invention ]

The condensation system of the secondary reflection tower type solar thermal power station mainly comprises a heliostat field and a secondary reflection tower, and is different from the traditional tower type solar thermal power generation technology in that the secondary reflection is to converge sunlight into a heat absorber at the bottom of the tower through the heliostat and a secondary reflection mirror at the top of the tower. The secondary reflection technology can effectively reduce the heat loss of a heat absorber on the top of the tower, improve the photo-thermal efficiency, solve the problems of frozen blockage and leakage of a fused salt pipeline, improve the safety of a power station and the like, and therefore the secondary reflection technology has a good application prospect.

The ideal surface shape of the secondary reflecting surface is a hyperboloid of revolution, the pointing point of the primary reflected beam is the upper focal point of the hyperboloid, and the center of the plane of the heat absorber coincides with the lower focal point, as shown in fig. 1.

The secondary mirror substructure is a discretized convex mirror and a mounting device thereof, which reflects the primary reflected light beam of the heliostat to the surface of the heat absorber again. The surface type precision of the secondary reflector is an included angle between the normal direction of the secondary reflector and the design theory normal direction, and is a core index of the structural design and manufacture of the secondary reflector. The index mainly comprises the deformation of the secondary mirror bracket and the reflector under the action of environmental load, manufacturing and assembling errors during manufacturing of the surface shape and the structure and the like.

Problems and contradictions:

the environmental load of the secondary reflector mainly comprises gravity, wind, snow, rainwater, temperature, earthquake load and the like, wherein wind load (generally, normal work is required below six-level wind) and temperature load (the highest temperature of the surface of the reflector can exceed 150 ℃ in a working state) are key indexes influencing the surface type precision of the secondary reflector in the working state.

1. Under the condition of temperature load, the reflector expands with heat and contracts with cold, and due to the difference of materials (the reflector is generally made of aluminum and has a higher thermal expansion coefficient than steel) and the temperature gradient distribution between the reflector and the main structure, if the reflector is fixedly connected with the main structure, the thermal expansion of the reflector is restricted, and ripples or folds are easily generated, so that the surface shape is greatly influenced.

2. Under the condition of wind load, the reflecting mirror is stressed by pressure perpendicular to the mirror surface, and according to the mechanical principle, larger tension is required to be generated in the mirror surface to realize the balance of force, so that the supporting support of the aluminum mirror is required to have better rigidity, the normal deflection deformation of the wind-induced aluminum mirror is reduced, and the surface shape precision of the aluminum mirror under the action of wind load is ensured.

Therefore, the difficulty of secondary structure design of the secondary reflector is that the surface shape needs to be kept stable under the requirements of complex combination working conditions such as temperature, wind load and the like.

[ Utility model ] content

The utility model aims to provide a: to prior art's defect and not enough, provide a secondary mirror secondary structure device of tower light and heat electricity generation, both can make the secondary mirror can realize the mirror surface free extension under the high temperature operating mode, can realize the high rigidity under the strong wind operating mode again, improve processing preparation, assembly, efficiency of construction and reduce the technology degree of difficulty simultaneously, reach the effect that improves secondary mirror secondary structure face type precision and reduce cost.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a secondary reflector inferior constructional device of tower light and heat electricity generation, constructs subassembly, secondary reflector subassembly and spring tensioning and spacing coupling assembling including inferior structure steel, secondary reflector subassembly on be equipped with inferior structure steel and construct the subassembly, inferior structure steel constructs to be connected through spring tensioning and spacing coupling assembling between subassembly and the secondary reflector subassembly.

The utility model discloses in: the secondary reflector component comprises an aluminum mirror and angle aluminum, wherein the angle aluminum is adhered to the aluminum mirror through glue.

The utility model discloses in: the secondary structural steel component is of a grid structure and is formed by welding galvanized rectangular pipes and channel steel, a module mounting support is welded on a frame position of the grid structure, and the secondary structural steel component is mounted on a tower body grid structure through the module mounting support on the frame position; the module mounting support is a fixing plate with a threaded hole, one end of the module mounting support is welded on the secondary structural steel component, and the module mounting support is connected and fixed on the tower body grid structure through a fixing rod at the central threaded hole.

The utility model discloses in: the spring tensioning and limiting connecting assembly comprises a connecting plate, a bearing, a limiting sleeve, a spring, a nut, a gasket and a screw rod, wherein the screw rod is provided with the limiting sleeve, the limiting sleeve is provided with the spring, one end of the screw rod is fixedly provided with the connecting plate, the connecting plate is connected to the secondary structural steel component through welding, the other end of the screw rod is provided with the bearing, and the bearing is fixed to the angle aluminum of the aluminum mirror; the limiting sleeve, the spring, the gasket and the nut are sequentially arranged on the screw rod, and the nut is screwed and compressed to enable the length of the limiting sleeve to be equal to that of the limiting sleeve.

After the structure is adopted, the utility model discloses beneficial effect does: the utility model has the advantages of simple structure and reasonable design, convenient to use is suitable for standardization and batched preparation concrete expression as follows:

1. the integral rigidity is good: the light spot profile has small deformation under the design wind load and temperature load;

2. the mechanical strength is high, the attack of project ground limit wind speed can be resisted, and the design service life exceeds 10 years;

3. the product has simple structure, convenient and efficient installation and low cost;

4. the pre-tightening and limiting device in the product can effectively relieve the contradictory requirements of the secondary mirror aluminum mirror on low thermal expansion resistance and high wind rigidity resistance, wherein; the aluminum mirror pretightening force is beneficial to improving the surface flatness of the aluminum mirror between the secondary structural steel component profiles, and the free thermal expansion of the aluminum mirror can be realized so as to ensure the surface form precision under the condition of heating working condition; the self-repairing function of the surface shape: on one hand, the spring tensioning and limiting connecting assembly can play a role in redistributing uneven pre-tightening force generated by the products under the action of external loads such as installation, wind, snow and the like when the aluminum mirror is heated, so that the surface smoothness of the aluminum mirror is improved; on the other hand, the surface shape precision of the aluminum mirror under the action of wind load can be guaranteed, the normal deflection deformation of the wind-induced aluminum mirror is reduced, and high normal rigidity is guaranteed.

[ description of the drawings ]

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, do not constitute a limitation of the invention, and in which:

FIG. 1 is a schematic diagram of a secondary reflection system;

fig. 2 is a schematic structural diagram of the present invention;

FIG. 3 is a schematic view of a secondary structural steel member assembly of the present invention;

FIG. 4 is a schematic view of the connection between a single aluminum mirror and a spring tensioning and limiting connection assembly;

FIG. 5 is an assembly view of a secondary mirror assembly and a spring tension limiting device in accordance with the present invention;

fig. 6 is the utility model discloses well spring tensioning and spacing coupling assembling structural schematic.

In the figure: 1. a secondary structural steel member; 2. a secondary mirror assembly; 3. the spring tensioning and limiting connecting assembly; 4. a module mounting support; 5. a galvanized rectangular tube; 6. channel steel; 7. an aluminum mirror; 8. an angle aluminum; 9. a connecting plate; 10. a bearing; 11. a limiting sleeve; 12. a spring; 13. a nut; 14. a gasket; 15. a screw.

[ detailed description ] embodiments

The invention will be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and the description are only for the purpose of explanation, but not for the purpose of limitation.

As shown in fig. 2-6, a secondary reflector secondary structure device of tower light and heat power generation, includes secondary structure steel structure subassembly 1, secondary reflector subassembly 2 and spring tensioning and spacing coupling assembling 3, secondary reflector subassembly 2 on be equipped with secondary structure steel structure subassembly 1, be connected through spring tensioning and spacing coupling assembling 3 between secondary structure steel structure subassembly 1 and the secondary reflector subassembly 2.

As shown in fig. 4, the secondary mirror assembly 2 is a secondary mirror functional assembly, and includes an aluminum mirror 7 and an angle aluminum 8, and the angle aluminum 8 is adhered to the aluminum mirror 7 by gluing. In specific implementation, as shown in fig. 4-5, 4 small aluminum mirrors 7 or a large aluminum mirror 7 with the same size are manufactured according to the size of the secondary structural

steel member assembly

1, 5 angle aluminum 8 are arranged on each aluminum mirror 7, and 2 spring tensioning and limiting connecting assemblies 3 are mounted on each angle aluminum 8.

As shown in fig. 3, the secondary structural steel member assembly 1 is of a grid structure, and is formed by welding a galvanized rectangular pipe 5 and a channel steel 6, welding a module mounting support 4 at a frame position of the grid structure, and mounting the module mounting support 4 at the frame position on a tower body grid structure (not shown in the figure); the module mounting support 4 is a fixing plate with a threaded hole, one end of the module mounting support is welded on the secondary structural steel component 1, and the module mounting support is connected and fixed on the tower body grid structure through a fixing rod at the central threaded hole. Normally 7 module-mounting supports 4 are provided on the structural steel component 1.

As shown in fig. 6, the spring tensioning and limiting connection assembly 3 includes a connection plate 9, a bearing 10, a limiting sleeve 11, a spring 12, a nut 13, a gasket 14 and a screw 15, the screw 15 is provided with the limiting sleeve 11, the limiting sleeve 11 is provided with the spring 12, one end of the screw 15 is fixed with the connection plate 9, the connection plate 9 is connected to the secondary structural steel member assembly 1 by welding, the other end is provided with the bearing 10, and the bearing 10 is fixed to the angle aluminum 8 of the aluminum mirror 7; the limiting sleeve 11, the spring 12, the gasket 14 and the nut 13 are sequentially mounted on the screw rod 15, and the nut 13 is screwed down and the spring 12 is compressed, so that the length of the limiting sleeve is equal to that of the limiting sleeve 11. In the spring tensioning and limiting connecting assembly 3, one end of a screw rod 15 penetrates through a through hole in the angle aluminum 8, one end of the screw rod is fixedly connected to a connecting plate 9, and the connecting plate 9 is fixedly connected to the secondary structural steel component 1 through welding. Spring 12 is through 11 cover on screw rod 15 of spacing sleeve, and the initial compression volume of this device accessible tightening 2 nuts 13 adjustment spring 12, and the length after the spring 12 initial compression is the same with 11 length of spacing sleeve, exerts the pretightning force of settlement to the secondary reflection aluminum mirror. Meanwhile, because the length of the compressed spring 12 is basically equal to that of the limiting sleeve 11, when the aluminum mirror 7 of the secondary reflection is subjected to external load perpendicular to the mirror surface, such as wind and snow load, in order to form the balance of force, the aluminum mirror 7 needs to increase the tensioning internal force and has the tendency of generating concave and convex deformation, and the limiting sleeve 11 can play a role of forming rigid support for the aluminum mirror 7, so that the aluminum mirror 7 is prevented from generating excessive deformation, and the surface type precision is ensured.

In the utility model, the spring 12 provides a certain initial tension for the aluminum mirror 7 to overcome the resistance which the aluminum mirror 7 may encounter when the aluminum mirror 7 is heated to expand and generates the overall extension movement; under the action of wind load, the one-way limiting mechanism in the spring 12, namely the limiting sleeve 11, bears the tensile force increased by the aluminum mirror 7, so that the problem of overlarge deformation caused by poor longitudinal supporting rigidity under the action of wind load of the aluminum mirror 7 is solved, and the contradictory requirements of the aluminum mirror 7 on low thermal expansion resistance and high wind stiffness are met.

The utility model discloses no matter be with regard to purpose, means and efficiency, with the obvious difference of the characteristic of current technique, be the utility model discloses a major breakthrough. It should be noted that the above-mentioned embodiments are only illustrative for explaining the principles and effects of the present invention, and are not intended to limit the scope of the present invention. Although specific embodiments and applications of the present invention have been illustrated and described herein, it is not intended that such embodiments be limited to the exact construction and modifications as illustrated and described, as those skilled in the art can readily appreciate without departing from the spirit and scope of the present invention. It is also to be understood that the components disclosed herein and various modifications, changes, extensions, operations, details of the method, and apparatus and methods disclosed herein may be readily arranged by those skilled in the art without departing from the spirit and scope of the present disclosure, and are not to be limited to the details of the devices and methods disclosed herein and are to be included within the scope of the appended claims.

Claims

1. The utility model provides a secondary reflector secondary structure device of tower solar-thermal power generation which characterized in that: including inferior structure steel structure subassembly (1), secondary reflector subassembly (2) and spring tensioning and spacing coupling assembling (3), secondary reflector subassembly (2) on be equipped with inferior structure steel structure subassembly (1), be connected through spring tensioning and spacing coupling assembling (3) between inferior structure steel structure subassembly (1) and secondary reflector subassembly (2).

2. The secondary reflector substructure installation of a tower-type photothermal power generation according to claim 1, wherein: the secondary reflector component (2) comprises an aluminum mirror (7) and angle aluminum (8), wherein the angle aluminum (8) is adhered to the aluminum mirror (7) through glue.

3. The secondary reflector substructure installation of a tower-type photothermal power generation according to claim 1, wherein: the secondary structural steel component (1) is of a grid structure and is formed by welding a galvanized rectangular pipe (5) and a channel steel (6), a module mounting support (4) is welded on the frame position of the grid structure, and the secondary structural steel component is mounted on a tower body grid structure through the module mounting support (4) on the frame position; the module mounting support (4) is a fixing plate with a threaded hole, one end of the module mounting support is welded on the secondary structural steel component (1) and is fixedly connected to the tower body grid structure through a fixing rod at the central threaded hole.

4. The secondary reflector substructure installation of a tower-type photothermal power generation according to claim 1, wherein: the spring tensioning and limiting connection assembly (3) comprises a connection plate (9), a bearing (10), a limiting sleeve (11), a spring (12), a nut (13), a gasket (14) and a screw rod (15), wherein the screw rod (15) is provided with the limiting sleeve (11), the limiting sleeve (11) is provided with the spring (12), one end of the screw rod (15) is fixedly provided with the connection plate (9), the connection plate (9) is connected to the secondary structural steel component (1) through welding, the other end of the screw rod is provided with the bearing (10), and the bearing (10) is fixed to angle aluminum of the aluminum mirror; the limiting sleeve (11), the spring (12), the gasket (14) and the nut (13) are sequentially mounted on the screw rod (15), and the nut (13) is screwed down and the spring (12) is compressed, so that the length of the limiting sleeve is equal to that of the limiting sleeve (11).