Heliostat body

Abstract

A heliostat body comprises a reflecting surface used for reflecting light, the reflecting surface is rectangular, and the area of the reflecting surface is larger than or equal to 32 m < 2 > and smaller than or equal to 45 m < 2 >; the reflecting surface support is used for supporting the reflecting surface, the reflecting surface support comprises a main beam and a plurality of support units fixedly arranged on the main beam at intervals, and the reflecting surface is directly or indirectly supported on the support units; the length of the main beam is larger than or equal to 85% of the length of the reflecting surface and smaller than or equal to 98% of the length of the reflecting surface. By adopting the design, the length of the main beam can be effectively reduced and the steel consumption can be reduced while ensuring that the surface shape of the reflecting surface has higher precision and meets the requirement of light condensation performance, so that the cost of the heliostat can be effectively reduced and the economical efficiency of the heliostat can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heliostats, in particular to a heliostat body. Background Art

[0002] A heliostat is a device used to focus sunlight onto a central heat exchanger (absorber) mounted on the top of a heat absorption tower. It utilizes solar thermal energy by heating the fluid inside. The attitude (orientation) of the reflecting surface in the heliostat can be adjusted as the position of the sun changes, so that the reflecting surface of the heliostat can always reflect sunlight onto the absorber, that is, the heliostat can track the sun.

[0003] The sun-tracking function of the heliostat is achieved by adjusting the pitch angle and azimuth angle of the reflector in the heliostat. The azimuth angle adjustment is generally achieved by using an azimuth angle drive device to drive the reflector in the heliostat to rotate with a rotation axis perpendicular to the ground as the rotation axis, and the pitch angle adjustment is generally achieved by using a pitch angle drive device to drive the reflector in the heliostat to rotate with a pitch angle rotation axis parallel to the ground as the rotation axis.

[0004] In addition, the reflective surface in the mirror body of the heliostat needs to have a certain light focusing ability while reflecting sunlight, that is, the reflective surface of the heliostat is a curved surface with a specific curvature. In order to obtain a preset reflective surface shape, the reflective surface bracket needs to provide good support for the reflective surface. The heliostats in the prior art have various structures. In order to obtain a good reflective surface shape, some of them use a large amount of steel for the reflective surface bracket, which seriously affects the economic efficiency of the heliostat. In order to improve the economic efficiency of the heliostat, some of them sacrifice the reflective surface shape, resulting in the heliostat's focusing performance failing to meet the requirements. Utility Model Content

[0005] In view of this, the utility model aims to provide a heliostat body, which optimizes the relationship between the area of ​​the reflecting surface and the length of the main beam in the reflecting surface bracket, thereby ensuring that the reflecting surface of the heliostat has a high precision and meets the requirements of focusing performance, while also effectively reducing the amount of steel used and reducing costs.

[0006] A heliostat body comprises: a reflecting surface for reflecting light, the reflecting surface is rectangular, and the area of ​​the reflecting surface is greater than or equal to 32m 2 , less than or equal to 45m 2; A reflecting surface bracket, used to support the reflecting surface, the reflecting surface bracket includes a main beam and a plurality of bracket units fixedly arranged on the main beam at intervals, and the reflecting surface is directly or indirectly supported on the bracket units; wherein the length of the main beam is greater than or equal to 85% of the length of the reflecting surface and less than or equal to 98% of the length of the reflecting surface, and the length direction of the reflecting surface is parallel to the length direction of the main beam.

[0007] As an improvement of the heliostat mirror body described in the utility model, the reflecting surface is composed of a plurality of reflecting surface units, and the area of ​​the reflecting surface is the sum of the areas of all the reflecting surface units.

[0008] As an improvement of a heliostat body described in the utility model, each of the bracket units includes a secondary beam and a central support; the central support is fixedly arranged on the main beam, and the middle part of the secondary beam is fixedly connected to the main beam through the central support.

[0009] As an improvement of a heliostat body described in the utility model, the bracket unit also includes a first support beam and a second support beam, the first support beam and the second support beam are respectively arranged on both sides of the extension direction of the main beam, the first end of the first support beam is connected to the corresponding central support, the second end of the first support beam is connected to the corresponding auxiliary beam, the first end of the second support beam is connected to the corresponding central support, and the second end of the second support beam is connected to the corresponding auxiliary beam.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] In the heliostat mirror body provided by the utility model, the area of ​​the reflecting surface is 32m 2 -45m 2 The length of the main beam is 85%-98% of the length of the reflecting surface. This design can ensure that the shape of the reflecting surface has high precision and meets the requirements of focusing performance, while also effectively reducing the length of the main beam and the amount of steel used, thereby effectively reducing the cost of the heliostat and improving the economy of the heliostat. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of the structure of a heliostat provided in an embodiment of the utility model;

[0013] Figure 2 A partial enlarged view of a heliostat provided in an embodiment of the utility model;

[0014] Figure 3 This is an assembly diagram of a connecting seat and an azimuth driving device in a heliostat provided in an embodiment of the utility model.

[0015] In the figure: 1: column; 2: rotary reducer; 21: worm wheel; 22: worm; 3: pitch angle drive device; 4: connecting seat; 41: connecting seat body; 42: rotating shaft assembly; 43: connecting seat support; 5: reflecting surface bracket; 51: first supporting beam; 52: reflecting surface; 53: auxiliary beam; 54: main beam; 55: central support; 56: second supporting beam; 57: main beam support; 58: push rod support. DETAILED DESCRIPTION

[0016] The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0017] Certain directional terms used in the following description of the drawings, such as "inside", "outside", "upper", "lower", "top", "bottom" and other directional terms will be understood to have their normal meanings and refer to those directions involved when the drawings are normally viewed. Unless otherwise specified, the directional terms described in this specification are basically in accordance with the conventional directions understood by those skilled in the art.

[0018] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] The following is a detailed description of the heliostat structure according to the utility model, as well as comparative examples, embodiments and test results:

[0020] First, some embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0021] Reference Figure 1 As shown, a heliostat body includes: a reflective surface 52 for reflecting light, the reflective surface 52 is rectangular, and the area of ​​the reflective surface 52 is greater than or equal to 32m 2 , less than or equal to 45m 2; The reflecting surface bracket 5 is used to support the reflecting surface 52. The reflecting surface bracket 5 includes a main beam 54 and a plurality of bracket units fixedly arranged on the main beam at intervals. The reflecting surface 52 is directly or indirectly supported on the bracket units; wherein the length of the main beam 54 is greater than or equal to 85% of the length of the reflecting surface 52 and less than or equal to 98% of the length of the reflecting surface 52, and the length direction of the reflecting surface 52 is defined as parallel to the length direction of the main beam 54.

[0022] Specifically, in this embodiment, the reflecting surface 52 is composed of a plurality of reflecting surface units, and the area of ​​the reflecting surface 52 is the sum of the areas of all reflecting surface units. When the reflecting surface 52 of the heliostat is composed of a plurality of reflecting surface units, there may be gaps between adjacent reflecting surface units. When calculating the area of ​​the reflecting surface 52, the gaps between adjacent reflecting surface units are not calculated in the area of ​​the reflecting surface 52.

[0023] Furthermore, in this embodiment, each bracket unit includes a sub-beam 53 and a central support 55; the central support 55 is fixedly arranged on the main beam 54, and the middle part of the sub-beam 53 is fixedly connected to the main beam 54 through the central support 55. In order to further improve the reliability and support rigidity of the reflective surface bracket 5, in this embodiment, the bracket unit also includes a first support beam 51 and a second support beam 56, which are respectively arranged on both sides of the extension direction of the main beam 54, the first end of the first support beam 51 is connected to the corresponding central support 55, the second end of the first support beam 51 is connected to the corresponding sub-beam 53, the first end of the second support beam 56 is connected to the corresponding central support 55, and the second end of the second support beam 56 is connected to the corresponding sub-beam 53.

[0024] The present application is further described below in conjunction with specific embodiments.

[0025] The heliostat includes a reflecting surface 52 with a rectangular shape, a reflecting surface bracket 5 for supporting the reflecting surface, a connecting seat 4, an electric push rod as a pitch angle driving device 3, a worm gear rotary reducer 2 as an azimuth angle driving device, and a column 1; the reflecting surface bracket 5 includes a main beam 54, 8 bracket units fixedly arranged on the main beam at intervals; each bracket unit includes a sub-beam 53, a central support 55, a first support beam 51 and a second support beam 56, the central support 55 is fixedly arranged on the main beam 54, the middle part of the sub-beam 53 is fixedly connected to the main beam 54 through the central support 55, the first support beam 51 and the second support beam 56 are respectively arranged on both sides of the extension direction of the main beam 54, the first end of the first support beam 51 is connected to the central support 55, the second end of the first support beam 51 is connected to the sub-beam 53, and the first end of the second support beam 56 is connected to the central support 55. The main beam 54 is connected to the central support 55, and the second end of the second support beam 56 is connected to the auxiliary beam 53; the base of the worm gear rotary reducer 2 is fixedly arranged on the top of the column 1, and the connecting seat 4 is fixedly arranged above the rotary reducer 2, and the connecting seat 4 includes a connecting seat body 41 and a rotating shaft assembly 42 arranged on the upper part of the connecting seat body 41; the main beam 54 is connected to the rotating shaft assembly 42 through the main beam support 57, so that the reflecting surface bracket 5 as a whole can rotate around the central axis of the rotating shaft assembly 42; the telescopic end of the electric push rod is hinged to the lower part of the connecting seat body 41 through the connecting seat support 43, and the push rod cylinder of the electric push rod is hinged to the reflecting surface bracket 5 through the push rod support 58. The electric push rod can drive the reflecting surface bracket 5 to rotate around the central axis of the rotating shaft assembly 42 through the telescopic end, thereby realizing the adjustment of the pitch angle of the reflecting surface 52.

[0026] The above describes the specific embodiments of the present application. It should be understood that the present application is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the substantive content of the present application. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

Claims

1. A heliostat body, characterized in that: include: A reflective surface is used to reflect light, the reflective surface is rectangular, and the area of ​​the reflective surface is greater than or equal to 32m 2 , less than or equal to 45m 2 ; A reflective surface bracket, used to support the reflective surface, the reflective surface bracket comprising a main beam and a plurality of bracket units fixedly arranged on the main beam at intervals, and the reflective surface is directly or indirectly supported on the bracket units; The length of the main beam is greater than or equal to 85% of the length of the reflecting surface and less than or equal to 98% of the length of the reflecting surface, and the length direction of the reflecting surface is parallel to the length direction of the main beam.

2. A heliostat body according to claim 1, characterized in that: The reflecting surface is composed of a plurality of reflecting surface units, and the area of ​​the reflecting surface is the sum of the areas of all the reflecting surface units.

3. A heliostat body according to claim 1 or 2, characterized in that: Each of the bracket units includes a secondary beam and a central support; the central support is fixedly arranged on the main beam, and the middle part of the secondary beam is fixedly connected to the main beam through the central support.

4. A heliostat body according to claim 3, characterized in that: The support unit also includes a first support beam and a second support beam, which are respectively arranged on both sides of the extension direction of the main beam, the first end of the first support beam is connected to the corresponding central support, the second end of the first support beam is connected to the corresponding auxiliary beam, the first end of the second support beam is connected to the corresponding central support, and the second end of the second support beam is connected to the corresponding auxiliary beam.

Images