A heliostat support

Abstract

The utility model discloses a heliostat support, which relates to the field of solar thermal power generation. The heliostat support comprises: a mounting base column; a column, one end of which is connected to the mounting base column; a support assembly, which comprises a main shaft; the support assembly is hinged to the other end of the column through the main shaft; a vertical drive device, which is arranged at the other end of the column and is used to drive the support assembly to rotate around the axis of the main shaft; and the support assembly is used to support the heliostat; the heliostat support also comprises a lifting mechanism arranged between the mounting base column and the column; in the process of the vertical drive device adjusting the rotation angle of the main shaft, the lifting mechanism can drive the column to move radially along the main shaft on the mounting base column to compensate for the rotation angle deviation of the main shaft. The heliostat support provided by the utility model can ensure the high efficiency and accuracy of the system.

Description

Technical Field

[0001] The utility model relates to the field of photothermal power generation, and in particular to a heliostat bracket. Background Art

[0002] The heliostat uses a horizontal adjustment device and a vertical adjustment device to adjust the angles in two directions respectively to achieve real-time tracking of the sun, thereby reflecting sunlight to the heat absorber in real time. The distance between the heat absorber and the heliostat is often more than one kilometer. Such a long distance makes the position of the reflected image move by as much as ten meters or even dozens of meters when the angle of the heliostat is adjusted, even if the angle changes slightly, such as a 0.1 degree angle change. Therefore, the current adjustment method of the heliostat is prone to over-adjustment. 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 bracket and a heliostat system, which can reduce the occurrence of over-adjustment and under-adjustment when adjusting in the vertical direction.

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

[0005] A heliostat support, comprising:

[0006] Install the base column;

[0007] A column, one end of which is connected to the mounting base column;

[0008] A support assembly, the support assembly comprising a main shaft; the support assembly is hinged to the other end of the column through the main shaft;

[0009] A vertical drive device, which is disposed at the other end of the column and is used to drive the support assembly to rotate around the axis of the main shaft; and

[0010] The support assembly is used to support the heliostat;

[0011] The heliostat support further includes a lifting mechanism disposed between the mounting base column and the upright column; during the process of the vertical drive device adjusting the main shaft rotation angle, the lifting mechanism can drive the upright column to move radially along the main shaft on the mounting base column to compensate for the main shaft rotation angle deviation.

[0012] Through the above scheme, a lifting mechanism is added to the heliostat bracket, so that when the vertical drive device is used to accurately adjust the main axis rotation angle, whether the angle adjustment is insufficient or exceeds the expected situation, the main axis can be moved accordingly through this newly added lifting mechanism. Such adjustment ensures that the light beam reflected to the absorber can be accurately projected to the required height position, which can ensure the efficiency and accuracy of the system.

[0013] Optionally, the lifting mechanism includes a scissors-type lifting frame and a linear drive device; one end of the scissors-type lifting frame is fixed to the mounting base column, and the other end of the scissors-type lifting frame is fixed to one end of the column; the linear drive device is used to drive the column to move.

[0014] Optionally, the linear drive device includes one of a hydraulic rod and an electric push rod, and two ends of the linear drive device are respectively connected to two ends of the scissors-type lifting frame to adjust the distance between the two ends of the scissors-type lifting frame.

[0015] Optionally, the scissors lift frame includes at least one pair of connecting rods, the pair of connecting rods includes a first connecting rod and a second connecting rod hinged together, one end of the first connecting rod away from the hinge is hinged to the column, and one end of the second connecting rod away from the hinge is hinged to the mounting base column.

[0016] Optionally, the first connecting rod and the second connecting rod have the same length.

[0017] Optionally, the scissors lift frame includes two pairs of connecting rods, and the two pairs of connecting rods are symmetrically arranged on both sides of the linear drive device with the linear drive device as the center.

[0018] Optionally, the scissors-type lifting frame includes an odd number of pairs of connecting rods; the odd number of pairs of connecting rods are centered on the column, surround the column in a circumferential direction and are evenly distributed.

[0019] Optionally, the heliostat bracket further includes a horizontal driving device; the horizontal driving device is arranged between the end of the mounting base column and the column, and the horizontal driving device can drive the column to rotate around the axis of the column; the axis of the column is the same as the extension direction of the mounting base column.

[0020] Optionally, the horizontal drive device includes a first rotary swinging hydraulic cylinder; the bottom of the cylinder body of the first rotary swinging hydraulic cylinder is connected to the mounting base column flange; the rotating body of the first rotary swinging hydraulic cylinder is connected to the lower end flange of the lifting mechanism at the end opposite to the bottom of the cylinder body, and the first rotary swinging hydraulic cylinder is used to drive the lifting mechanism and the column to rotate around the axis of the column.

[0021] Optionally, the vertical drive device includes a second rotary swing hydraulic cylinder;

[0022] The cylinder body of the second rotary swing hydraulic cylinder is fixed to the other end of the column, and the column extends in the radial direction of the rotary body of the second rotary swing hydraulic cylinder; the main shaft is coaxially connected to the rotary body of the second rotary swing hydraulic cylinder.

[0023] 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

[0024] The utility model is further described below in conjunction with the accompanying drawings:

[0025] Figure 1 It is a structural schematic diagram of the heliostat support.

[0026] Figure 2 It is a schematic diagram of the working principle of the heliostat support.

[0027] Figure 3 It is a schematic diagram of the structure of the second rotary swing hydraulic cylinder and the supporting assembly.

[0028] Figure 4 2 is a cross-sectional view of the pillars described in some embodiments.

[0029] Among them, 100, mounting base column; 200, column; 300, support assembly; 310, main shaft; 320, crossbeam; 400, first rotary swing hydraulic cylinder; 500, second rotary swing hydraulic cylinder; 520, through hole; 600, lifting mechanism; 610, first connecting rod; 620, second connecting rod; 630, linear drive device. DETAILED DESCRIPTION

[0030] 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.

[0031] References to "one embodiment" or "an example" or "an example" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment disclosed in the present utility model. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

[0032] like Figure 1 and Figure 2 As shown, a heliostat support is shown, which includes a mounting base column 100, a column 200, a support assembly 300, a horizontal driving device, a vertical driving device and a lifting mechanism 600.

[0033] The installation base is usually a column or stand erected on the ground, and is mostly a tubular structure, such as a round tube. The lower end of the installation base column 100 is used to be inserted into the ground or fixed to the installation base buried in the ground, and the upper end of the installation base column 100 is upward and erected on the ground.

[0034] The column 200 is movably arranged at the upper end of the mounting column 100. In this embodiment, the column 200 also adopts a round tube and is erected at the upper end of the mounting column 100. The horizontal drive device and the lifting mechanism 600 are arranged between the mounting column 100 and the column 200. On the one hand, the lower end of the column 200 can rotate on the mounting column 100 along its own axis through the horizontal drive device, and on the other hand, it can be lifted and lowered along the length direction of the mounting column 100, that is, the height direction or extension direction of the mounting column 100, through the lifting mechanism 600, so as to adjust the height of the column 200.

[0035] The horizontal driving device and the lifting mechanism 600 located between the mounting base column 100 and the column 200 can be arranged in the order that the lifting mechanism 600 is arranged above the horizontal driving device, and then the column 200 is arranged on the lifting mechanism 600, and the horizontal driving device drives the column 200 to rotate by driving the lifting device above when rotating horizontally; or the horizontal device can be arranged above the lifting mechanism 600, and the column 200 is arranged on the horizontal mechanism, and the lifting mechanism 600 drives the column 200 to rise and fall by driving the horizontal driving device above during the lifting process. There is no limitation here, and those skilled in the art can flexibly choose according to the situation.

[0036] The support assembly 300 is used to support the heliostat. The support assembly 300 includes a main shaft 310 and a plurality of cross beams 320 disposed on the main shaft 310, wherein the plurality of cross beams 320 intersect with the main shaft 310 to form a mounting surface for fixing the heliostat. The support assembly 300 is hinged to the other end of the column 200 through the middle of the main shaft 310, and a plurality of cross beams 320 are disposed at both ends of the main shaft 310 to form two mounting surfaces respectively.

[0037] The vertical drive device is disposed at the upper end of the column 200 and is used to drive the support assembly 300 to rotate around the axis of the main shaft 310 to achieve vertical angle adjustment of the heliostat during sun tracking, so that the light beam reflected by the heliostat can be projected onto a distant heat absorber.

[0038] During the process of the vertical drive device adjusting the rotation angle of the main shaft 310, even if the adjustment accuracy of the vertical drive device is insufficient and over-adjustment or insufficient adjustment occurs, the lifting mechanism 600 can drive the column 200 to move radially (i.e., in height) of the main shaft 310 on the mounting base column 100 to compensate for the rotation angle deviation of the main shaft 310.

[0039] like Figure 3 As shown, point A and point B are at different distances from the ground, point C and point D are located on the distant absorber, point C is located at the edge below the absorber, and point D is located in the middle area of ​​the absorber, that is, the location of the heat absorption area.

[0040] At the height of point A, the heliostat rotates to a suitable angle through the vertical drive mechanism and reflects the light beam to the distant heat absorber. However, due to insufficient adjustment of the vertical drive mechanism, the light beam does not fall near the expected point D, but falls to point C. Point C is located at the edge below the heat absorber, resulting in poor heat absorption effect of the heat absorber. At this time, the heliostat is raised from point A to the height of point B through the lifting mechanism 600, so the landing point of the light beam on the distant heat absorber can move upward from point C and gradually approach point D. In this embodiment, point B is directly above point A, and point D is directly above point C, so ABCD forms a parallelogram. Therefore, when the heliostat rises to the height of point B, the corresponding light beam moves from point C to point D.

[0041] In addition, in some embodiments, the lifting mechanism 600 on the heliostat bracket does not lift the heliostat vertically, and the surface of the absorber is not perpendicular to the ground, that is, AB is not parallel to CD, so the height of the heliostat rises and the distance of the absorber light beam rises are not necessarily equal. When the lifting mechanism 600 is used to compensate for the adjustment of the vertical drive mechanism, calibration can be performed first to establish a mapping relationship between the AB length and the CD length. In addition, in the process of adjusting the reflection angle in the vertical direction by the vertical drive mechanism, it is relatively slow, and there is enough time to obtain feedback information and perform compensation adjustment for the lifting mechanism 600.

[0042] In some embodiments, Figure 1As shown, the horizontal driving device is arranged at the end of the mounting base column 100, and the lifting mechanism 600 is arranged above the horizontal driving device, and the horizontal driving device can drive the lifting mechanism 600 and the column 200 to rotate around the axis of the column 200. The axis of the column 200 is the same as the extension direction of the mounting base column 100, that is, the column 200 is concentric with the mounting base column 100.

[0043] In some embodiments, Figure 1 As shown, the horizontal driving device includes a first rotary swing hydraulic cylinder 400. The first rotary swing hydraulic cylinder 400 is used to drive the lifting mechanism 600 and the column 200 to rotate around the axis of the column 200.

[0044] Specifically, the bottom of the cylinder of the first rotary swing hydraulic cylinder 400 is flange-connected to the mounting base column 100, and the output end of the first rotary swing hydraulic cylinder 400 faces upward, that is, the upper end of the rotary body of the first rotary swing hydraulic cylinder 400 is flange-connected to the lower end of the lifting mechanism 600. The lower end of the lifting mechanism 600 is rotatably connected to the mounting base column 100 through the first rotary swing hydraulic cylinder 400.

[0045] In some embodiments, Figure 1 As shown, the lifting mechanism 600 includes a scissor lift frame and a linear drive device 630. One end of the scissor lift frame is fixed to the mounting base column 100, and the other end of the scissor lift frame is fixed to one end of the column 200. The linear drive device 630 is used to drive the column 200 to move.

[0046] The linear drive device 630 includes one of a hydraulic rod and an electric push rod. Specifically, the linear drive device 630 can select the same type of power source according to the vertical drive device and the horizontal drive device, that is, electric or hydraulic drive. Those skilled in the art can flexibly select according to the situation without limitation. The two ends of the linear drive device 630 are respectively connected to the two ends of the scissor lift frame to adjust the distance between the two ends of the scissor lift frame.

[0047] In some embodiments, the scissor lift frame includes at least one pair of connecting rods. The pair of connecting rods includes a first connecting rod 610 and a second connecting rod 620 that are hinged together, wherein one end of the first connecting rod 610 away from the hinge is hinged to the column 200, and one end of the second connecting rod 620 away from the hinge is hinged to the mounting base column 100. The first connecting rod 610, the second connecting rod 620 and the linear drive device 630 can form a stable triangular structure, which has a good supporting effect on the column 200.

[0048] Specifically, the first connecting rod 610 and the second connecting rod 620 have the same length, so the first connecting rod 610 and the second connecting rod 620 can not only be subjected to uniform force, but also can be produced with the same specifications, thereby reducing costs.

[0049] like Figure 1 As shown, an implementation mode of the scissor lift frame using two pairs of connecting rods is shown, and the two pairs of connecting rods are symmetrically arranged on both sides of the linear drive device 630 with the linear drive device 630 as the center.

[0050] In some embodiments, the scissor lift frame includes an odd number of pairs of connecting rods, and the odd number of connecting rods are centered on the column 200 and are evenly distributed around the column 200. Figure 4 As shown, three pins are arranged outside the column 200, and the corresponding angle between each pin is 120°. One end of the three pairs of connecting rods is respectively hinged to the corresponding pins through bearings. Correspondingly, three pins are also arranged on the rotating body of the first rotary swing hydraulic cylinder 400 for being hinged to the second connecting rod 620.

[0051] In some embodiments, Figure 1 and Figure 3 As shown, the vertical driving device includes a second rotary swing hydraulic cylinder 500 .

[0052] The cylinder body of the second rotary swing hydraulic cylinder 500 is fixed to the upper end of the column 200, and the column 200 extends radially of the rotating body of the second rotary swing hydraulic cylinder 500. The main shaft 310 is coaxially connected to the rotating body of the second rotary swing hydraulic cylinder 500, and the main shaft 310 is perpendicular to the column 200.

[0053] In one embodiment, the second cylinder has a cylindrical cavity and two openings connected to the cavity, and the two openings are arranged opposite to each other in the axial direction of the second cylinder. The second rotating body is rotatably arranged in the cavity, and the second rotating body has two opposite connecting ends, and the two connecting ends are respectively located in the two opposite openings of the second cylinder.

[0054] A through hole 520 is provided between the two connecting ends of the second rotating body. The main shaft 310 is a square shaft with a square cross section, and the shape of the through hole matches the cross-sectional shape of the square shaft. Since the main shaft 310 is a square shaft and the through hole is a square hole, it is equivalent to a square key connection between the two. Alternatively, the main shaft 310 is a circular shaft, and only a rectangular (square) spline is provided in the middle of the main shaft 310 to match the through hole.

[0055] Specifically, the extension direction of the through hole 520 is in the same direction as the rotation center of the rotating body, that is, the two are colinear. In this way, no matter what angle the support assembly 300 rotates to, the axis of the main shaft 310 and the axis of the column 200 can be located in the same vertical plane as much as possible, avoiding the support assembly 300 and the heliostat from generating additional torque on the column 200.

[0056] 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 support, comprising: Install the base column; A column, one end of which is connected to the mounting base column; A support assembly, the support assembly comprising a main shaft; the support assembly is hinged to the other end of the column through the main shaft; A vertical drive device, which is disposed at the other end of the column and is used to drive the support assembly to rotate around the axis of the main shaft; and The support assembly is used to support the heliostat; It is characterized in that the heliostat bracket also includes a lifting mechanism arranged between the mounting base column and the column; when the vertical drive device adjusts the rotation angle of the main shaft, the lifting mechanism can drive the column to move radially along the main shaft on the mounting base column to compensate for the rotation angle deviation of the main shaft.

2. The heliostat support according to claim 1, characterized in that: The lifting mechanism comprises a scissor lift frame and a linear drive device; one end of the scissor lift frame is fixed to the mounting base column, and the other end of the scissor lift frame is fixed to one end of the column; the linear drive device is used to drive the column to move.

3. The heliostat support according to claim 2, characterized in that: The linear drive device includes one of a hydraulic rod and an electric push rod, and two ends of the linear drive device are respectively connected to two ends of the scissor lift frame to adjust the distance between the two ends of the scissor lift frame.

4. The heliostat support according to claim 2, characterized in that: The scissor lift frame includes at least one pair of connecting rods, which include a first connecting rod and a second connecting rod hinged together, wherein one end of the first connecting rod away from the hinge is hinged to the column, and one end of the second connecting rod away from the hinge is hinged to the mounting base column.

5. The heliostat support according to claim 4, characterized in that: The first connecting rod and the second connecting rod have the same length.

6. The heliostat support according to claim 4, characterized in that: The scissor lift frame comprises two pairs of connecting rods, and the two pairs of connecting rods are symmetrically arranged on both sides of the linear drive device with the linear drive device as the center.

7. The heliostat support according to claim 4, characterized in that: The scissor lift frame includes an odd number of pairs of connecting rods; the odd number of pairs of connecting rods are centered on the column, surround the column in a circumferential direction and are evenly distributed.

8. The heliostat support according to claim 1, characterized in that: The heliostat support further comprises a horizontal driving device, which is arranged between the end of the mounting base column and the column, and can drive the column to rotate around the axis of the column, and the axis of the column is in the same extension direction as the mounting base column.

9. The heliostat support according to claim 8, characterized in that: The horizontal driving device includes a first rotary swinging hydraulic cylinder; the bottom of the cylinder body of the first rotary swinging hydraulic cylinder is connected to the mounting base column flange; the rotating body of the first rotary swinging hydraulic cylinder is connected to the lower end flange of the lifting mechanism at the end opposite to the bottom of the cylinder body, and the first rotary swinging hydraulic cylinder is used to drive the lifting mechanism and the column to rotate around the axis of the column.

10. The heliostat support according to claim 1, characterized in that: The vertical drive device includes a second rotary swing hydraulic cylinder; The cylinder body of the second rotary swing hydraulic cylinder is fixed to the other end of the column, and the column extends in the radial direction of the rotary body of the second rotary swing hydraulic cylinder; the main shaft is coaxially connected to the rotary body of the second rotary swing hydraulic cylinder.

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