WO2018153025A1

WO2018153025A1 - Support structure

Info

Publication number: WO2018153025A1
Application number: PCT/CN2017/095411
Authority: WO
Inventors: 黄文博; 陈玉银; 王帅; 王丽丽
Original assignee: 北京首航艾启威节能技术股份有限公司
Priority date: 2017-02-24
Filing date: 2017-08-01
Publication date: 2018-08-30
Also published as: CN207096548U

Abstract

A support structure, for use in supporting a mirror. The support structure comprises: a central part (100); a peripheral part (200) located at the periphery of the central part (100); and ribs (5, 6, 7) provided inside the central part (100) or connected to the central part (100) and the peripheral part (200). The central part (100), the peripheral part (200), and the ribs (5, 6, 7) define a hollow part (14).

Description

supporting structure

Technical field

The present disclosure relates to the field of energy harvesting and utilization, and in particular to a support structure for supporting a mirror surface, particularly for supporting a heliostat mirror surface.

Background technique

Heliostat is a concentrating device consisting of mirror, mirror support structure, tracking transmission structure and its control system. It is the most basic concentrating unit in tower solar thermal power station, as tower solar thermal power generation. The key part of the station, which occupies the main part of the power station investment and the main site occupying the power station.

With the continuous development and advancement of CSP technology, a single small area heliostat has been unable to meet the technical requirements. The current method is composed of a plurality of sub-mirror units composed of a single large-area heliostat, each sub-mirror consisting of a reflecting surface and a lens supporting structure, and the design and manufacture of the heliostat lens supporting structure directly reflects the concentrating performance and resistance of the heliostat. The ability to influence the environment. Due to the great demand for heliostats in tower-type photothermal power stations, considering the weather resistance and mechanical strength of heliostats, it is of great significance to design a lens support structure with good quality and strength.

The heliostat lens support structure currently in use can meet the needs of general projects, but when applied to a large area heliostat, it has a great influence on the concentrating performance of the heliostat, so there is still room for optimization and improvement.

Public content

In view of the above problems, the present disclosure provides a structural stability, light weight, high strength, and easy installation and use of a lens support structure to improve the concentrating performance of a large area heliostat, thereby making the overall system performance more stable and reliable.

According to an aspect of the present disclosure, a support structure for supporting a mirror surface is provided, the support structure including: a center portion; a peripheral portion located at a periphery of the center portion; and a rib disposed inside or connecting the center portion And a peripheral portion, wherein the central portion, the peripheral portion, and the rib define a hollow portion.

In some embodiments of the present disclosure, the peripheral portion has a rectangular outline, and the peripheral portion includes two long sides, two short sides, and four corners, and the two long sides, two short sides, and four corners include A flanged structure that extends away from the direction in which the support structure mounts the mirror.

In some embodiments of the present disclosure, the central portion includes an inner ring structure and an outer ring structure, the inner ring structure, the outer ring structure, and a geometric center of the support structure being concentric, the outer ring structure and the peripheral portion The two long sides are tangent.

In some embodiments of the present disclosure, the ribs include: at least one long rib extending from the inner ring structure to the corners in a divergent manner; at least one short rib extending from the inner ring structure to the outer ring structure in a divergent manner; At least one middle rib extends from the intersection of the long rib and the outer ring structure to the midpoint of the short side.

In some embodiments of the present disclosure, the central portion, the peripheral portion, and the long rib are in a step transitional connection, the forming height of the long rib is higher than the forming height of the central portion, and the forming height of the central portion is higher than The forming height of the peripheral portion.

In some embodiments of the present disclosure, the central portion, the peripheral portion, and the rib each have a C-shaped cross section, the C-shaped cross section including: a central branch corresponding to a forming height of the central portion, the peripheral portion, and the rib; The inclined branch extends obliquely outward from the sides of the center branch to the mirror surface of the support structure; the mirror mounting portion extends from the outer end portion of the inclined branch, and the mirror surface is connected by an adhesive, the mirror mounting portion being parallel In the center branch.

In some embodiments of the present disclosure, a hollow portion is formed by a region enclosed by the inner ring structure, the outer ring structure, the peripheral portion, and the rib, the outline of the hollow portion being defined by the mirror mounting portion.

In some embodiments of the present disclosure, a bolt hole for connecting the support structure and the fixing device is provided on a central branch of the section of the long rib, the bolt hole being located at an intersection of the outer ring structure and the long rib At the center.

In some embodiments of the present disclosure, at least one of the junction of the long side of the peripheral portion with the outer ring structure and the junction of the corner and the long rib is provided with a stamped vent.

In some embodiments of the present disclosure, at least one of the intersection of the outer ring structure with the short ribs and/or the middle ribs, and the intersection of the inner ring structure and the short ribs is provided with a stamping groove.

In some embodiments of the present disclosure, the stamping slot is circular or rectangular.

The support structure of the present disclosure has at least the following beneficial effects:

Compared with the previous metal brackets, the overall stamping process is easy to ensure the same size stability, repeatability, precision and product quality, as well as light weight, good rigidity, etc., easy to achieve automated production, more suitable for a larger number of sub- Mirror assembly to achieve a large area of a single heliostat.

DRAWINGS

1 is a schematic structural view of a support structure according to an embodiment of the present disclosure.

Figure 2 is a partial cross-sectional view of the support structure of Figure 1.

Figure 3 is a cross-sectional view of the joint region of the support structure and the support.

detailed description

The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the disclosure and are not intended to limit the disclosure.

Instead, the present disclosure encompasses any alternatives, modifications, equivalents, and aspects of the present invention as defined by the appended claims. Further, in order to provide a better understanding of the present disclosure, the specific details are described in detail in the following detailed description of the disclosure. The disclosure may be fully understood by those skilled in the art without a description of these details.

An embodiment of the present disclosure provides a support structure for supporting a mirror surface, wherein the support structure includes: a central portion, a peripheral portion located at a periphery of the central portion, and a portion disposed inside the central portion or connecting the central portion and the peripheral portion The rib, the central portion, the peripheral portion and the rib define a hollow portion.

1 is a schematic structural view of a support structure according to an embodiment of the present disclosure. As shown in FIG. 1 , in an embodiment, a support structure is used for supporting a focusing type heliostat lens, and the support structure is made of a thin plate. One press forming is performed to form a plurality of molded structures on the sheet. The support structure includes a central portion 100, a peripheral portion 200, and a plurality of ribs 5, 6, 7 disposed inside or connecting the central portion and the peripheral portion. The central portion 100, the peripheral portion 200 and the ribs 5, 6, 7 define a hollow portion. The central portion 100 includes an inner ring structure 3 and an outer ring structure 4, the inner ring structure 3 and the outer ring structure 4 being concentric, the center of which is the geometric center 8 of the integral support structure; the outer portion of the peripheral portion 200 has a rectangular outer shape, and the peripheral portion 200 has Two long sides 1, two short sides 2 and four corners 9, the four corners may be arc angles or sharp corners, and the two long sides 1, two short sides 2 and four corners 9 may include a flange a structure to increase the structural rigidity of the support structure; the ribs 5, 6, 7 comprise: long ribs 5 extending from the inner ring structure 3 to the four corners 9 in a divergent manner, extending from the inner ring structure 3 in a divergent manner to The short ribs 6 of the outer ring structure 4 and the two pairs of middle ribs 7 extending from the intersection of the long ribs 5 and the outer ring structure 4 to the midpoint of the short side 2, the arrangement of the ribs causes the load on the mirror surface Uniform distribution on the support structure, and the arrangement of the ribs further enhances the structural rigidity of the support structure.

The central portion 100, the peripheral portion 200 and the long rib 5 are connected in a stepwise transition, and the formation of the long rib 5 The height of the type is higher than the forming height of the central portion 100, and the forming height of the central portion 100 is higher than the forming height of the peripheral portion 200.

2 is a partial cross-sectional view of the support structure of FIG. 1, wherein (a)-(d) are schematic cross-sectional views at positions A-A, B-B, C-C, and D-D of FIG. 1, respectively. The central portion 100, the peripheral portion 200 and the ribs 5, 6, 7 have a C-shaped cross section.

(a) in FIG. 2 shows a cross section of the long side 1 of the peripheral portion 200 at the AA position, the C-shaped cross section including the center branch 15, the inclined branch 18, and the mirror mounting portion 16, which corresponds to the peripheral portion 200 The forming height of the long side 1 and the inclined branch 18 extend obliquely outward from the sides of the center branch 15 toward the mounting surface of the supporting structure, and the two mirror mounting portions 16 respectively extend from the outer ends of the inclined branches 18 through the adhesive The mirror surface is connected, the mirror mounting portion 16 is parallel to the center branch 15, and the flange structure 17 extends from the outer end portion of the mirror mounting portion 16 toward the mirror mounting surface away from the support structure.

(b) in FIG. 2 shows a cross section of the short rib 6 at the BB position, and the C-shaped cross section of the short rib 6 includes a center branch 15, a slanted branch 18, and a mirror mounting portion 16, which corresponds to the short rib The forming height of the slanting branch 18 extends obliquely outward from the sides of the center branch 15 toward the mounting surface of the supporting structure, and the two mirror mounting portions 16 respectively extend from the outer end portions of the two inclined branches 18, and are connected to the mirror surface by an adhesive. .

(c) in FIG. 2 shows a cross section of the short side 2 of the peripheral portion 200 at the CC position, the C-shaped cross section including the center branch 15, the inclined branch 18, and the mirror mounting portion 16, which corresponds to the peripheral portion The forming height of the short side 1 of the 200, the inclined branch 18 extends obliquely outward from the sides of the central branch 15 toward the mounting surface of the supporting structure, and the two mirror mounting portions 16 respectively extend from the outer ends of the two inclined branches 18 by bonding The agent is connected to the mirror surface, the mirror mounting portion 16 is parallel to the center branch 15, and the flange structure 17 extends from the outer end portion of the mirror mounting portion 16 toward the mirror mounting surface away from the support structure.

(d) in FIG. 2 shows a cross section of the long rib 5 at the DD position, and the C-shaped cross section of the long rib 5 includes a center branch 15, a slanted branch 18, and a mirror mounting portion 16, which corresponds to the long rib The forming height of the slanting branch 18 extends obliquely outward from the sides of the center branch 15 toward the mounting surface of the supporting structure, and the two mirror mounting portions 16 respectively extend from the outer end portions of the two inclined branches 18, and are connected to the mirror surface by an adhesive. 21, which is parallel to the center branch 15 on both sides of the center branch 15, represents the forming height of the outer ring structure 4 on both sides of the long rib 5, and the center branch 15 parallel 22 denotes a step structure in which the long ribs 5 are attached to the mirror surface in the direction in which the corners 9 extend.

The shape of the cross-section is non-limiting, and other shapes that provide substantial rigidity and structural resistance to the support structure may also be employed in some embodiments.

On the central branch 15 of the section of the long rib 5, a bolt hole 13 for connecting the integral frame of the heliostat may be provided, the bolt hole 13 being located at the center of the intersection of the outer ring structure 4 and the long rib 5 . The bolt holes 13 can be used to fix the mirrored support structure to the fixture, such as a heliostat mount. 3 is a cross-sectional view of the joint region of the support structure and the support. As shown in FIG. 3, the bolt is coupled with the bolt hole 13 so that the support structure is fixed on the fixing device, and the mirror surface 19 is fixed on the support structure by the adhesive 20. . The bolt holes 13 serve as support points to minimize deformation of both the mirror surface and the support structure relative to the working load, gravity, wind resistance, etc. of the heliostat as a whole.

The central portion 100, the peripheral portion 200, and the material corresponding to the flat structural region in the region of the siege between the ribs 5, 6, 7 are removed, thereby forming a plurality of hollow hollow portions 14 to reduce the weight of the entire support structure. The outline of the hollow portion 14 is defined by the mirror mounting portion 16.

In some embodiments, the junction of the long side 1 of the peripheral portion 200 with the outer ring structure 4, and/or the junction of the corner 9 and the long rib 5 may have a stamped exhaust The hole 10 can be used as a rainwater hole for the heliostat.

In some embodiments, in order to further increase the rigidity of the support structure, at least the intersection of the outer ring structure 4 with the short ribs 6 and/or the middle ribs 7, and at least the intersection of the inner ring structure 3 and the short ribs 6 One is provided with a punching groove, and the punching groove is circular or rectangular. For example, a plurality of deep-drawn circular grooves 11 are provided at the intersection of the outer ring structure 4 and the short ribs 6 and the middle ribs 7, and the inner ring structure 3 and the short ribs are A plurality of deep drawn rectangular slots 12 are provided at the junction of 6.

The support structure in the present disclosure adopts an integral stamping process compared with the conventional metal bracket, and is easy to ensure the stability, repeatability, precision and product quality of the same size, as well as the advantages of light weight, good rigidity, and the like, and is easy to realize automatic production. It is suitable to assemble a large area of a single heliostat with a larger number of sub-mirrors.

The above embodiments are merely illustrative and not limiting of the technical solutions of the present disclosure. Therefore, modifications or partial substitutions such as the central ring structure, the number of ribs, and the angular adjustment are not departing from the spirit and scope of the present disclosure. The entire shape, cross-sectional shape and the like should be covered within the scope of the present disclosure.

It should be noted that the shapes and sizes of the components in the drawings do not reflect the true size and proportions, but merely illustrate the contents of the embodiments of the present disclosure.

The directional terms used in the embodiments, such as "upper", "lower", "front", "back", "left", "right", etc., are merely referring to the directions of the drawings, and are not intended to limit the disclosure. protected range. The above embodiments may be used in combination with other embodiments or based on design and reliability considerations, that is, the technical features in different embodiments may be freely combined to form more embodiments.

The present disclosure and its embodiments have been described above in detail, and the description is not limited thereto, and only one embodiment of the present disclosure is shown in the drawings, and the actual structure is not limited thereto. It is to be understood by those skilled in the art that the structure and embodiments similar to the technical solutions are designed in other ways, without departing from the spirit and scope of the disclosure.

Claims

A support structure for supporting a mirror surface, wherein the support structure comprises:

Central part

a peripheral portion located at the periphery of the central portion;

a rib disposed inside the central portion or connecting the central portion and the peripheral portion,

Wherein the central portion, the peripheral portion and the rib define a hollow portion.
The support structure according to claim 1, wherein the peripheral portion has a rectangular outline, and the peripheral portion includes two long sides, two short sides, and four corners, the two long sides, two short sides, and four The corners include a flanged structure that extends away from the mounting surface of the support structure.
The support structure according to claim 2, wherein the central portion comprises an inner ring structure and an outer ring structure, the inner ring structure, the outer ring structure and the geometric center of the support structure being concentric, the outer ring structure and The two long sides of the peripheral portion are tangent.
The support structure of claim 3 wherein said ribs comprise:

At least one long rib extending from the inner ring structure to the corners in a divergent manner;

At least one short rib extending from the inner ring structure to the outer ring structure in a divergent manner;

At least one middle rib extends from the intersection of the long rib and the outer ring structure to the midpoint of the short side.
The support structure according to claim 4, wherein the central portion, the peripheral portion and the long rib are step-transitionally connected, the forming height of the long rib being higher than the forming height of the central portion, and the forming of the central portion The height is higher than the forming height of the peripheral portion.
A support structure according to any one of claims 3-5, wherein the central portion, the peripheral portion and the rib each have a C-shaped cross section, the C-shaped cross section comprising:

a central branch corresponding to the forming height of the central portion, the peripheral portion, and the rib;

Tilting the branch and extending obliquely outward from the sides of the center branch to the mirror surface of the support structure;

The mirror mounting portion extends from the outer end portion of the inclined branch, and the mirror surface is connected by an adhesive, the mirror mounting portion being parallel to the center branch.
The support structure according to claim 6, wherein a hollow portion is formed by a region surrounded by the inner ring structure, the outer ring structure, the peripheral portion, and the rib, and the outline of the hollow portion is defined by the mirror mounting portion.
A support structure according to any one of claims 4 to 7, wherein a bolt hole for connecting the support structure and the fixing means is provided on a central branch of the section of the long rib, the bolt hole position At the center of the intersection of the outer ring structure and the long ribs.
A support structure according to any one of claims 4 to 7, wherein at least one of a joint of a long side of the peripheral portion with the outer ring structure and a joint of the corner and the long rib is opened There are stamped vents.
A support structure according to any one of claims 4 to 7, wherein

At least one of the intersection of the outer ring structure with the short ribs and/or the middle ribs, and the intersection of the inner ring structure and the short ribs is provided with a punching groove.
The support structure according to claim 10, wherein the punching groove is circular or rectangular.