CN114704966A

CN114704966A - Solar heliostat unit reflector back support

Info

Publication number: CN114704966A
Application number: CN202210366013.5A
Authority: CN
Inventors: 张喜良; 郭明换; 白凤武; 孙飞虎; 王志峰
Original assignee: Institute of Electrical Engineering of CAS
Current assignee: Institute of Electrical Engineering of CAS
Priority date: 2022-04-08
Filing date: 2022-04-08
Publication date: 2022-07-05
Anticipated expiration: 2042-04-08
Also published as: CN114704966B

Abstract

The invention relates to a solar heliostat unit reflector back support which is composed of a component I (1), a component II (2), a component III (3), a component IV (4), a component V (5), a connecting bolt (6), a flat washer (7), a spring washer (8) and a nut (9). Wherein subassembly one (1) is 2, subassembly two (2) are 6, subassembly three (3) are 3, subassembly four (4) are 2, subassembly five (5) are 2, bolt (6), plain washer (7), spring washer (8) and nut (9) are a plurality of. All the components are connected in sequence to form a rectangular plane grid structure. By adjusting the relative rotation angle of each assembly, the curved surface where the bonding point (10) on each assembly is positioned can be adjusted to be a curved surface with corresponding curvature, so that the requirement of condensing the reflector of the solar heliostat unit at different positions in a mirror field is met.

Description

Solar heliostat unit reflector back support

Technical Field

The invention belongs to the field of solar energy, and particularly relates to a reflecting mirror back support of a solar heliostat unit.

Background

Today of human civilization, along with the development of world economy, energy demand is increased sharply day by day, traditional fossil energy storage is limited, the shortage of fossil energy is more and more prominent in the global scope, and in addition, the environmental pollution alarm clock is prolonged, so that new energy development becomes a priority. For the sustainable development of human beings, the reasonable development and utilization of renewable energy sources, especially solar energy, are very important and must be the way. Solar energy plays an important role in new energy, the available time is relatively long and stable, the reserve is huge and pollution-free, and the solar energy will play a leading role in green energy in the future. In recent years, researchers in various countries all over the world have performed a lot of work and scientific research in this respect, and have achieved certain results, and solar high-temperature heat utilization is the most typical representative. The solar high-temperature heat utilization comprises solar thermal power generation, solar thermochemistry and the like, and an important device, namely a solar heliostat can not be used no matter the solar thermal power generation or the solar thermochemistry is, and the solar heliostat is a core device for the solar high-temperature heat utilization, so that the performance and the cost of the solar heliostat play an important role in the whole system. The solar heliostat functions to reflect or concentrate the rays of the moving sun into a fixed area. Generally comprises a foundation, a vertical column, a transmission case, a bracket, unit reflectors and a control system. The unit reflector is composed of a silver-plated reflecting lens and a unit reflector back support, the silver-plated reflecting lens is made of glass, the glass is made of brittle materials and is very easy to damage, and when the silver-plated reflecting lens is directly installed on the heliostat support, stress can be transmitted to the silver-plated reflecting lens due to deformation of the heliostat support, so that the silver-plated reflecting lens is damaged. In addition, the surface shape of the reflecting surface of the unit reflecting mirror has two conditions according to the area of the reflecting surface, one is a plane, the other is a concave surface, and the curvature of the unit reflecting mirror is different when the surface shape of the unit reflecting mirror is a concave surface along with the difference of the position of the solar heliostat in a mirror field. Because the silvered reflectors are generally plane mirrors when leaving the factory, and for the reasons, the solar heliostat unit reflectors must be introduced into the back support to ensure that the surface types of the unit reflectors and the silvered reflector lenses of the unit reflectors are not damaged. The back support of the unit reflecting mirror not only plays a role in supporting the silver-plated reflecting mirror piece, but also can enable the silver-plated reflecting mirror piece to form a certain curved surface. In the mirror field of the solar tower type thermal power station, the unit mirror surface types of the heliostats at different positions have different curvatures, so that the back supports of the unit mirrors cannot be fixed and cannot be adjusted, otherwise, in order to enable the unit mirrors on the heliostats at different positions to have different surface types, different unit mirror back supports need to be manufactured, for example, the unit mirror back supports are integrally formed by stamping by using a steel plate. This results in increased costs for making the heliostats, which in turn results in a significant increase in the construction costs of the entire power plant or the entire system.

Disclosure of Invention

The invention aims to provide a back support of a reflecting mirror of a solar heliostat unit, which has a simple structure and can be adjusted in shape so as to meet the requirements of reflecting mirror surface types of units with different curvatures and finally reduce the manufacturing cost of the solar heliostat and a mirror field.

The reflecting surface areas of the reflecting mirrors of the solar heliostat units are different and have different sizes. When the area of the reflecting surface of the reflecting mirror of the solar heliostat unit is large to a certain degree, if the reflecting surface is a plane or an irregular concave surface, because the sun itself has 32 dispersion angles, light spots formed after reflection are large, and even the use requirements can not be met. In addition, the solar heliostat requires that the reflecting mirror surface shape of the solar heliostat unit must have concave surfaces with different curvatures to be matched with the solar heliostat unit at different positions in a mirror field so as to achieve an ideal light condensation effect. This requires the introduction of a solar heliostat unit mirror back support that can accomplish this function.

In order to achieve the aim, the invention provides a reflecting mirror back support of a solar heliostat unit, which consists of a component I, a component II, a component III, a component IV, a component V, a connecting bolt, a flat washer, a spring washer and a nut; the first component is 2 pieces and comprises two straight rods which are perpendicular to each other and have a long length and a short length to form an L shape, and the end parts of the two straight rods are joints; the second assembly is 6 pieces and comprises three straight rods, the three straight rods form a T shape, and the end part of each straight rod is a connecting part; the third component is 3 pieces, the third component forms an I shape, two short rods are arranged outwards in the middle of an upper cross rod and a lower cross rod of the I shape, and six end parts of the third component are joints; the fourth component is 2 pieces and comprises two straight rods which are perpendicular to each other and have a long length and a short length to form an L shape, and the end parts of the two straight rods are joints; the fifth component is 2 pieces and is of a [ -shaped structure, two ends of the vertical rod slightly extend out, and four end parts are connected; the number of the bolts, the flat washers, the spring washers and the nuts is multiple; each assembly is divided into a front surface and a back surface, one or two adhesive points are arranged on the back surface of each assembly, and the total number of the assemblies forming the back support of the reflector of the solar heliostat unit is 15.

Furthermore, the connecting part of each assembly is arranged in a semicircular shape so as to avoid interference when the adjustment rotation is carried out, meanwhile, the rod piece thickness of the assembly at each connecting part is half of the thickness of the rod piece of the assembly, and the rod pieces with uniform width are formed after the adjacent assemblies are connected.

Further, 15 assemblies are connected in sequence to form a rectangular plane grid structure, and the assemblies are connected through connecting bolts, flat washers, spring washers and nuts.

Furthermore, by adjusting the relative rotation angle of each assembly, the curved surface where the bonding point on each assembly is positioned is adjusted to be a curved surface with corresponding curvature, so that the light gathering requirements of the reflectors of the solar heliostat units at different positions in the field of view are met.

Has the advantages that:

the invention has simple structure and flexible adjustment, can meet the requirements of the reflector surface types of the solar heliostat units with different curvatures, and can adjust the reflectors of various focal length units by utilizing one structure. The invention can form concave surfaces with various curvatures by only adopting 15 components, thereby meeting different light-gathering requirements. The invention enables the back support of the reflecting mirror of the solar heliostat unit to be in a concave shape by adjusting the relative angle of each component, and finally enables the reflecting surface of the reflecting mirror of the solar heliostat unit to be in a concave surface with a certain curvature so as to meet the light gathering requirements of the reflecting mirrors of the solar heliostat unit at different positions in a mirror field.

Drawings

FIG. 1 is a schematic view of a mirror back support structure of a solar heliostat unit of the invention; wherein, the drawing (a) is a front view, and the drawing (b) is a back view;

FIG. 2 is a schematic view of an assembly of the present invention; wherein, the drawing (a) is a front view, and the drawing (b) is a back view;

FIG. 3 is a schematic view of a second embodiment of the present invention; wherein, the drawing (a) is a front view, and the drawing (b) is a back view;

FIG. 4 is a schematic view of an assembly of the present invention; wherein, the drawing (a) is a front view, and the drawing (b) is a back view;

FIG. 5 is a diagram of a fourth embodiment of the present invention; wherein, the drawing (a) is a front view, and the drawing (b) is a back view;

FIG. 6 is a fifth schematic view of the inventive assembly; wherein, the drawing (a) is a front view, and the drawing (b) is a back view.

In the figure: 1. a first component; 2. a second component; 3. a third component; 4. a fourth component; 5. a fifth component; 6. a bolt; 7. a flat washer; 8. a spring washer; 9. a nut; 10. and (6) bonding the points.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, it is a schematic view of the reflector back support of the solar heliostat unit of the invention. The back support of the reflecting mirror of the solar heliostat unit consists of a first assembly 1, a second assembly 2, a third assembly 3, a fourth assembly 4, a fifth assembly 5, a connecting bolt 6, a flat washer 7, a spring washer 8 and a nut 9. Wherein the first component 1 is 2, the second component 2 is 6, the third component 3 is 3, the fourth component 4 is 2, the fifth component 5 is 2, and the bolts 6, the flat washers 7, the spring washers 8 and the nuts 9 are respectively a plurality of. As shown in fig. 2, the first assembly 1 includes two straight bars perpendicular to each other, each of which has a long length and a short length, and is formed into an L shape, and ends of the two straight bars are joints. As shown in fig. 3, the second assembly 2 includes three straight rods, the three straight rods form a T shape, and an end of each straight rod is a joint. As shown in fig. 4, the third assembly 3 is formed into an i-shape, two short rods are arranged outwards in the middle of the upper cross rod and the lower cross rod of the i shape, and six end parts of the third assembly 3 are joints. As shown in fig. 5, the assembly four 4 includes two straight rods perpendicular to each other, and the ends of the two straight rods are joints. As shown in fig. 6, the fifth component 5 is a [ -shaped structure, two ends of the vertical rod slightly protrude, and four ends are joints. All the components are integrally formed. Each module has a front side and a back side, and as shown in fig. 2 to 6, there are one or two adhesive points 10 on the back side of each module. In order to reduce the number of different components as much as possible and reduce the processing difficulty, the whole structure is divided into five types of 15 components. And the middle position of the reflector back support of the solar heliostat unit is a third assembly 3. As shown in fig. 4, the third module 3 has 6 joints, which are connected to the left module 3, the right module 3, the upper module 2 and the lower module 2, respectively, as shown in fig. 1. The left module three 3 is in turn connected to the left module five 5, the upper module two 2 and the lower module two 2. The right module three 3 is in turn connected to the right module five 5, the upper module two 2 and the lower module two 2. The first assembly 1 is respectively connected with the second assembly 2 and the fifth assembly 5, and as shown in fig. 1(a), the first assembly is connected with the solar heliostat unit reflector back support at the upper left corner and the lower right corner. The fourth component 4 is connected with the second component 2 and the fifth component 5 respectively, and is connected with the positions of the upper right corner and the lower left corner of the reflecting mirror back support of the solar heliostat unit as shown in fig. 1 (a). Finally, a rectangular plane grid structure is formed. The connecting part of each assembly is designed into a semicircular shape so as to avoid interference when the adjustment and the rotation are carried out, meanwhile, the thickness of the rod piece of the assembly at the connecting part is half of the thickness of the rod piece of the assembly, and the rod piece with uniform width is formed after the adjacent assemblies are connected. The joints are connected by bolts 6 and can rotate by taking the bolts 6 as rotating shafts. The invention enables the back of the reflector of the solar heliostat unit to be in a concave shape by adjusting the relative angle of each component, and finally enables the reflective surface of the reflector of the solar heliostat unit to be in a concave surface with a certain curvature so as to meet the light condensation requirement of the reflectors of the solar heliostat unit at different positions in a mirror field.

The process of forming the final solar heliostat unit reflector is as follows: as described above, the respective components are connected in sequence to form a rectangular planar lattice structure, as shown in fig. 1 (a). With the bond points 10 on the same side as shown in fig. 1 (b). Each of the bonding points 10 is adjusted substantially in a plane and each of the nuts 9 is properly tightened. An adhesive is applied to each of the bonding points 10, and then the unit mirror back support is bonded to the back surface of the silver-plated mirror plate. After the adhesive is completely cured, one side of the silvered glass lens of the unit reflector is placed on a pre-manufactured mould with corresponding curvature, each nut 9 is loosened, certain external force is applied to the back support of the solar heliostat unit reflector, so that the silvered glass lens of the solar heliostat unit reflector is fully contacted with the surface of the mould, and finally each nut 9 is locked, and the manufacture of the solar heliostat unit reflector is completed.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a solar energy heliostat unit reflecting mirror back of body supports which characterized in that: the back support of the reflector of the solar heliostat unit consists of a first assembly (1), a second assembly (2), a third assembly (3), a fourth assembly (4), a fifth assembly (5), a connecting bolt (6), a flat washer (7), a spring washer (8) and a nut (9); the first component (1) is 2 pieces, and comprises two straight rods which are perpendicular to each other and have a long length and a short length to form an L shape, and the end parts of the two straight rods are joints; the second assembly (2) comprises 6 straight rods, the three straight rods form a T shape, and the end part of each straight rod is a connecting part; the third component (3) is 3 pieces, the third component forms an I shape, two short rods are outwards arranged in the middle of an upper cross rod and a lower cross rod of the I shape, and six end parts of the third component (3) are all joints; the fourth component (4) is 2 pieces and comprises two straight rods which are perpendicular to each other and have a long length and a short length to form an L shape, and the end parts of the two straight rods are joints; the fifth component (5) is 2 pieces, is of a [ -shaped structure, two ends of the vertical rod slightly extend out, and four end parts are connected; the number of the bolts (6), the flat washers (7), the spring washers (8) and the nuts (9) is several; each component is divided into a front surface and a back surface, and one or two bonding points (10) are arranged on the back surface of each component; the total number of the components forming the reflecting mirror back support of the solar heliostat unit is 15.

2. The solar heliostat unit mirror back support of claim 1, wherein: the connecting part of each assembly is arranged in a semicircular shape so as to avoid interference when the adjustment and the rotation are carried out, meanwhile, the thickness of the rod piece of the assembly at each connecting part is half of the thickness of the rod piece of the assembly, and the rod pieces with uniform width are formed after the adjacent assemblies are connected.

3. The solar heliostat unit mirror back support of claim 1, wherein: the 15 components are connected in sequence to form a rectangular plane grid structure, and are connected through a connecting bolt (6), a flat washer (7), a spring washer (8) and a nut (9).

4. The solar heliostat unit mirror back support of claim 1, wherein: the bolt (6) is used as a rotating shaft, and the curved surface where the adhesive point (10) on each assembly is located is adjusted to be a curved surface with a corresponding curvature by adjusting the relative rotating angle of each assembly, so that the light gathering requirements of the solar heliostat unit reflectors at different positions in a mirror field are met.