A heliostat with angle positioning

Abstract

The utility model discloses a heliostat with angle positioning, which relates to the technical field of solar thermal power generation, including a basic pillar, a mirror frame and a heliostat mirror surface, wherein the mirror frame includes a main shaft and a plurality of auxiliary support beams, wherein the plurality of auxiliary support beams are mounted on the main shaft, and the heliostat mirror surface is mounted on the plurality of auxiliary support beams, and the heliostat also includes a first adjustment module, a second adjustment module, a positioning module and a control module, wherein the main shaft is mounted on the first adjustment module, the first adjustment module is mounted on the second adjustment module, the second adjustment module is mounted on the basic pillar, the positioning module is mounted on the main shaft, and the position data of the heliostat mirror surface is obtained, and the control module controls the first adjustment module and the second adjustment module to adjust the angle of the heliostat mirror surface according to the position data. The utility model can achieve precise control of the angle of the heliostat mirror surface.

Description

Technical Field

[0001] The utility model relates to the technical field of solar thermal power generation, in particular to a heliostat with angle positioning. Background Art

[0002] Nowadays, solar thermal power generation technology has become increasingly popular and developed. The basic principle of solar thermal power generation is to control the heliostat to reflect sunlight to the surface of the absorber located on the top of the tower. After the absorber absorbs the heat of the sunlight, it heats and melts the molten salt inside the absorber. The molten salt is transported by a high-temperature pump to the power station at the bottom of the tower for high-temperature power generation. Therefore, whether the heliostat can accurately reflect sunlight to the surface of the absorber is the key to solar thermal power generation technology. The heliostats in the prior art generally have the following problems: the heliostat only reflects sunlight to the tower absorber according to the astronomical algorithm, and then controls the light and shadow of the reflected light not to deviate from the absorber surface. However, since the astronomical algorithm is an approximate estimate, and the accumulation of various mechanical structures' own design, processing errors, assembly errors, etc., there is always a large deviation, so it is impossible to accurately control the angle of the heliostat. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art to a certain extent. To this end, the utility model provides a heliostat with angle positioning, which can achieve accurate control of the angle of the heliostat mirror surface.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A heliostat with angle positioning, comprising a basic support, a mirror frame and a heliostat mirror surface, the mirror frame comprising a main shaft and a plurality of auxiliary support beams, the plurality of auxiliary support beams being installed on the main shaft at intervals along the radial direction of the main shaft, the heliostat mirror surface being installed on the plurality of auxiliary support beams, the heliostat further comprising a first adjustment module, a second adjustment module, a positioning module and a control module, the main shaft being installed on the first adjustment module, the first adjustment module being installed on the second adjustment module, the second adjustment module being installed on the basic support, and the positioning module being installed on the main shaft;

[0006] Based on the position data of the heliostat mirror surface acquired by the positioning module, the control module controls the first adjustment module and the second adjustment module to adjust the angle of the heliostat mirror surface.

[0007] The technical solution provided by the utility model collects the position data of the heliostat mirror surface in real time through the positioning module, which greatly improves the accuracy of the obtained heliostat mirror surface position compared to the astronomical formula calculation adopted in the prior art. On this basis, the adjustment data that can be obtained will also become more accurate. At the same time, since the acquired position data is real-time and accurate data, the control amount obtained based on the real-time and accurate position data must also be obtained after adding various errors into the calculation. Therefore, the utility model overcomes the large deviation existing in the prior art and realizes the precise control of the heliostat mirror surface angle.

[0008] Optionally, the first adjusting module includes a first rotary motor and a rotating shaft, and the first rotary motor is installed on the second adjusting module via the rotating shaft to drive the main shaft.

[0009] Optionally, the second adjustment module includes a column and a second rotary motor, and the second rotary motor is installed on the base column through the support to drive the rotating shaft.

[0010] The two degrees of freedom of the heliostat are controlled respectively by the first adjustment module and the second adjustment module, and the accuracy of the adjusted position is ensured on the basis of the precise adjustment amount.

[0011] Optionally, the positioning module includes a mounting bracket, a guide rail and a positioning camera, the mounting bracket is mounted on the main shaft, the guide rail is mounted on the mounting bracket, the positioning camera can move on the guide rail, and the lens of the positioning camera can rotate.

[0012] Optionally, a plurality of heliostat mirror surfaces are provided, the mounting bracket is located between two adjacent heliostat mirror surfaces, and the plane where the mounting bracket is located is perpendicular to the plane where the heliostat mirror surfaces are located.

[0013] Optionally, the heliostat mirror position data includes:

[0014] When the positioning camera photographs the heat absorber, the angle of the heliostat mirror and the spatial position of the heat absorber;

[0015] When the positioning camera photographs the heliostat, the angle of the heliostat mirror surface and the spatial position of the heliostat;

[0016] When the positioning camera photographs the sun, the angle of the heliostat mirror and the spatial position of the sun.

[0017] The mounting bracket is installed on the main shaft, so that the guide rail and the positioning camera can adjust their positions along with the main shaft, and the positioning camera can move on the guide rail, so that the data range that the positioning camera can obtain is further expanded, thereby ensuring the accuracy of the obtained data.

[0018] These features and advantages of the utility model will be disclosed in detail in the following specific embodiments and drawings. The best implementation or means of the utility model will be fully presented in conjunction with the drawings, but it is not a limitation of the technical solution of the utility model. In addition, these features, elements and components appearing in each of the following texts and drawings are multiple, and are marked with different symbols or numbers for convenience, but all represent components with the same or similar structure or function. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] Figure 1 It is an overall schematic diagram of an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the installation of the mounting bracket, the guide rail and the positioning camera in the embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the position of the mounting bracket, the guide rail and the positioning camera installed on the heliostat in the embodiment of the utility model;

[0023] Figure 4 It is a schematic diagram of angle data in an embodiment of the present utility model.

[0024] Among them, 1-base support, 2-mirror frame, 21-main axis, 22-secondary support beam, 3-heliostat mirror, 4-first adjustment module, 41-first rotary motor, 42-rotating shaft, 5-second adjustment module, 51-column, 52-second rotary motor, 6-positioning module, 61-mounting bracket, 62-guide rail, 63-positioning camera, 7-heat absorber, 8-sun. DETAILED DESCRIPTION

[0025] The following is a detailed description of embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments in the implementation manner are intended to be used to explain the present invention and should not be construed as limiting the present invention.

[0026] References in this specification to "one embodiment" or "an example" or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment of the present patent disclosure. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

[0027] Example:

[0028] like Figure 1As shown, this embodiment provides a heliostat with angle positioning, including a base support 1, a mirror frame 2, a heliostat mirror surface 3, a first adjustment module 4, a second adjustment module 5, a positioning module 6 and a control module (not shown in the figure).

[0029] The base support 1 is used to fix and install the entire heliostat. The mirror frame 2 includes a main shaft 21 and a plurality of auxiliary support beams 22, and the number of auxiliary support beams 22 is determined by the size of the heliostat and the spacing between adjacent auxiliary support beams 22. A plurality of auxiliary support beams 22 are installed on the main shaft 21 at intervals along the radial direction of the main shaft 21, and the heliostat mirror surface 3 is installed on the plurality of auxiliary support beams 22. In this embodiment, two heliostat mirror surfaces 3 are provided. In other embodiments, the number of heliostat mirror surfaces 3 can be flexibly selected by those skilled in the art according to actual engineering requirements, and is not limited here.

[0030] The first adjustment module 4 includes a first rotary motor 41 and a rotating shaft 42, and the second adjustment module 5 includes a column 51 and a second rotary motor 52. The main shaft 21 is installed on the first adjustment module 4. Specifically, the main shaft 21 is connected to the first rotary motor 41. The first adjustment module 4 is installed on the second adjustment module 5, and specifically, the first rotary motor 41 is connected to the second rotary motor 52 through the rotating shaft 42. The second adjustment module 5 is installed on the foundation support 1, and specifically, the second rotary motor 52 is installed on the foundation support 51 through the support. Through the first adjustment module 4 and the second adjustment module 5, the two degrees of freedom of the heliostat are controlled respectively, and the accuracy of the adjusted position is guaranteed on the basis of the accurate adjustment amount.

[0031] like Figure 2 As shown, the positioning module 6 includes a mounting bracket 61, a guide rail 62, and a positioning camera 63. The guide rail 62 is mounted on the mounting bracket 61, and the positioning camera 63 can move on the guide rail 62, so that the range of data that the positioning camera 63 can obtain is further expanded, ensuring the accuracy of the obtained data. In addition, the lens of the positioning camera 63 can achieve 0 to 360 degree rotation to output an electrical signal of the real-time angle of rotation of the lens, further expanding the range of data that can be obtained. Figure 1 and Figure 3 As shown, the positioning module 6 is installed on the main shaft 21 through the mounting bracket 61, so that the guide rail 62 and the positioning camera 63 can adjust the position along with the main shaft 21. In the axial direction of the main shaft 21, the mounting bracket 61 is located between two adjacent heliostat mirror surfaces 3, and the plane where the mounting bracket 61 is located is perpendicular to the plane where the heliostat mirror surfaces are located.

[0032] The positioning module 6 obtains the position data of the heliostat mirror surface 3, and the position data of the heliostat mirror surface 3 includes: when the positioning camera 63 photographs the absorber, the angle of the heliostat mirror surface 3 and the spatial position of the absorber; when the positioning camera 63 photographs the heliostat, the angle of the heliostat mirror surface 3 and the spatial position of the heliostat; when the positioning camera 63 photographs the sun, the angle of the heliostat mirror surface 3 and the spatial position of the sun.

[0033] The relationship between the angles of the sun 8, the absorber 7, the heliostat mirror 3 and the positioning camera 63 is as follows: Figure 4 As shown, the control module is based on the position data, that is, Figure 3 The three angles of middle angle A, angle B and angle C are used to obtain the angle of the heliostat mirror surface 3 that needs to reflect sunlight to the absorber 7, and the first adjustment module 4 and the second adjustment module 5 are controlled to adjust the angle of the heliostat mirror surface 3 and provide real-time position feedback.

[0034] The technical solution provided in this embodiment collects the position data of the heliostat mirror surface in real time through the positioning module, which greatly improves the accuracy of the position of the heliostat mirror surface compared to the astronomical formula calculation used in the prior art. On this basis, the adjustment data that can be obtained will also become more accurate. At the same time, since the acquired position data is real-time and accurate data, the control amount obtained based on the real-time and accurate position data must also be obtained after adding various errors to the calculation. Therefore, this embodiment overcomes the large deviations existing in the prior art and realizes accurate control of the heliostat mirror surface.

[0035] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention shall be included in the scope of the claims.

Claims

1. A heliostat with angle positioning, comprising a base support, a mirror frame and a heliostat mirror surface, wherein the mirror frame comprises a main shaft and a plurality of auxiliary support beams, wherein the plurality of auxiliary support beams are installed on the main shaft at intervals along the radial direction of the main shaft, and the heliostat mirror surface is installed on the plurality of auxiliary support beams, characterized in that: The heliostat further comprises a first adjustment module, a second adjustment module, a positioning module and a control module, the main shaft is mounted on the first adjustment module, the first adjustment module is mounted on the second adjustment module, the second adjustment module is mounted on the base support, and the positioning module is mounted on the main shaft; The first adjustment module comprises a first rotary motor and a rotating shaft, wherein the first rotary motor is mounted on the second adjustment module via the rotating shaft and is used to drive the main shaft; The second adjustment module comprises a column and a second rotary motor, the second rotary motor is mounted on the base column through the column and is used to drive the rotating shaft; Based on the position data of the heliostat mirror surface acquired by the positioning module, the control module controls the first adjustment module and the second adjustment module to adjust the angle of the heliostat mirror surface.

2. The heliostat according to claim 1, characterized in that: The positioning module comprises a mounting bracket, a guide rail and a positioning camera, wherein the mounting bracket is mounted on the main shaft, the guide rail is mounted on the mounting bracket, the positioning camera can move on the guide rail, and the lens of the positioning camera can rotate.

3. The heliostat according to claim 2, characterized in that: There are multiple heliostat mirror surfaces, the mounting bracket is located between two adjacent heliostat mirror surfaces, and the plane where the mounting bracket is located is perpendicular to the plane where the heliostat mirror surfaces are located.

4. The heliostat according to claim 2, characterized in that: The position data of the heliostat mirror surface includes: the angle of the heliostat mirror surface and the spatial position of the heat absorber when the positioning camera photographs the heat absorber; When the positioning camera photographs the heliostat, the angle of the heliostat mirror surface and the spatial position of the heliostat; when the positioning camera photographs the sun, the angle of the heliostat mirror surface and the spatial position of the sun.

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