CN118640859A - Heliostat upright post azimuth angle initial installation deviation measurement tool and measurement method - Google Patents
Heliostat upright post azimuth angle initial installation deviation measurement tool and measurement method Download PDFInfo
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- CN118640859A CN118640859A CN202411109455.7A CN202411109455A CN118640859A CN 118640859 A CN118640859 A CN 118640859A CN 202411109455 A CN202411109455 A CN 202411109455A CN 118640859 A CN118640859 A CN 118640859A
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- 238000005259 measurement Methods 0.000 title claims abstract description 27
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Abstract
The invention relates to the technical field of solar heat utilization, in particular to a heliostat upright post azimuth angle initial installation deviation measurement tool and a measurement method, comprising the following steps: the fixing part is configured on a certain height of the heliostat upright post according to actual needs; the measuring part comprises a pointing unit and a connecting unit, and two ends of the connecting unit are respectively connected with the fixing part and the pointing unit in a matching way; the connecting unit can drive the pointing unit to synchronously rotate around the central axis of the heliostat upright post, so that the pointing unit points at a preset target point; the distance between the projection of the straight line of the pointing direction of the pointing unit on the horizontal plane and the projection of the central axis of the heliostat upright on the horizontal plane is always kept unchanged. The invention provides a simple tool based on an optical sighting principle, which can effectively avoid the influence of external magnetic interference on measurement precision, effectively simplify the structure of the measurement tool and improve the measurement precision.
Description
Technical Field
The invention relates to the technical field of solar heat utilization, in particular to a heliostat upright post azimuth angle initial installation deviation measurement tool and a measurement method.
Background
The heliostat field is an important component of a tower type solar heat utilization system, the heliostat field is generally composed of thousands of heliostats, each heliostat field comprises upright posts for supporting the whole heliostat, when the heliostat upright posts are installed on the ground, the azimuth angles of the heliostat upright posts need to be ensured to meet preset requirements, but due to certain deviation of the heliostat upright posts in the production and installation processes, certain deviation exists in the azimuth angles of the installed heliostat upright posts relative to the preset requirements, and further the heliostat is difficult to accurately reflect solar rays onto a heat absorber, therefore, in order to enable the heliostat to accurately reflect the solar rays onto the heat absorber, initial installation deviation of azimuth angles of the heliostat upright posts need to be measured, then the heliostat is corrected according to the initial installation deviation of azimuth angles of the heliostat upright posts obtained through measurement, in the prior art, the initial installation deviation of azimuth angles of the heliostat upright posts is generally measured through a compass, but the following problems exist when the compass is used for carrying out fixed measurement: (1) The measurement results of different compasses have deviation, and the measurement equipment (compasses) need to be calibrated in advance, so that the complexity of a measurement scheme is increased; (2) The magnetic declination angles in different areas are different, and even the magnetic declination angles in different years have small changes; (3) The compass is easily interfered by an environmental magnetic field and an electric field, and the requirements of heliostat tracking precision and radian level precision are hardly met.
Disclosure of Invention
The invention aims to solve the defects of the prior art, provides a heliostat column azimuth initial installation deviation measuring tool and a heliostat column azimuth initial installation deviation measuring method, and solves the problem that a traditional compass scheme is unstable in measuring result due to magnetic interference.
In order to achieve the above object, the present invention provides a heliostat column azimuth initial installation deviation measurement tool, comprising:
The fixing part is configured on a certain height of the heliostat upright post according to actual needs, and the characteristic points of the fixing part on the fixing part correspond to the characteristic points of the upright post on the heliostat upright post according to preset requirements;
The measuring part comprises a pointing unit and a connecting unit, wherein the first end of the connecting unit is connected with the fixing part in a matched manner, and the second end of the connecting unit is connected with the pointing unit in a matched manner;
The connecting unit can drive the pointing unit to synchronously rotate around the central axis of the heliostat upright post, so that the pointing unit points at a preset target point;
in the process that the pointing unit rotates around the central axis of the heliostat stand column, the distance between the projection of the straight line of the pointing direction of the pointing unit on the horizontal plane and the projection of the central axis of the heliostat stand column on the horizontal plane is always kept unchanged.
Preferably: the pointing direction of the pointing unit can swing up and down in a first plane, wherein the first plane is a straight line passing through the pointing direction of the pointing unit and is parallel to the central axis of the heliostat upright post.
Preferably: the extending direction of the connecting unit is perpendicular to the central axis of the heliostat upright post; the straight line of the pointing direction of the pointing unit is always perpendicular to the central axis of the heliostat upright post and the extending direction of the connecting unit.
Preferably: the connecting unit is a connecting rod, the pointing unit is a sight, and the sight is rotationally connected with the connecting rod.
Preferably: the fixed part is connected with the heliostat stand column through a connecting key structure, the corresponding position of the connecting key structure on the fixed part is the characteristic position of the fixed part, and the corresponding position of the connecting key structure on the heliostat stand column is the characteristic position of the stand column.
Preferably: the fixing part is provided with an annular track groove, and the connecting unit rotates around the central axis of the heliostat stand column along the annular track groove.
Preferably: the annular track groove is provided with angle scales.
Preferably: the fixed part is the staple bolt, the staple bolt includes two staple bolt boards that can fastening connection and mutual separation, so that will the staple bolt hugs tightly on the heliostat stand or follow demolish on the heliostat stand.
Preferably: the preset target point is a preset point on an absorber tower in the tower type solar heat utilization system.
The invention also provides a heliostat upright post azimuth angle initial installation deviation measuring method, which is characterized by comprising the following steps of;
S1: installing the measuring tool on a stand column of the heliostat to be measured, and enabling the characteristic points of the fixed part on the fixed part to correspond to the characteristic points of the stand column of the heliostat to be measured according to preset requirements;
s2: rotating the connecting unit and the pointing unit from a preset starting point, and recording the rotating angle of the connecting unit as a first rotating angle when the pointing unit points to the preset target point;
And S3, comparing the first rotation angle with the second angle to obtain the initial installation deviation of the azimuth angle of the heliostat stand column, wherein the second angle is an angle which is rotated from the initial position which is the same as the preset initial position in the step S2 to the point direction unit pointing to the preset target point when the azimuth angle initial installation deviation does not exist in the heliostat stand column to be detected, and the installation position of the measuring tool on the heliostat stand column to be detected is the same as that in the step S1.
Compared with the prior art, the technical scheme provided by the application has the following beneficial effects:
According to the heliostat stand azimuth initial installation deviation measuring tool provided by the invention, the azimuth initial installation deviation of the heliostat stand can be measured by arranging the pointing unit (such as the optical sighting device), compared with a traditional scheme of measuring by using a compass, the influence of external magnetic interference on measuring precision can be effectively avoided, the structure of the measuring tool can be effectively simplified, and the measuring precision is improved.
Secondly, when the heliostat upright post is installed in a photo-thermal project, the heat absorption tower in the project site generally has a certain height, and the preset position point on the heat absorption tower is used as the preset target point of the pointing unit, so that the shielding problem is avoided, and convenience is brought to measurement of initial installation deviation of the azimuth angle of the heliostat upright post.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of the whole structure of a tooling of the present invention;
FIG. 2 is a schematic view of the connection of the sight connection rod of the present invention;
In the figure: 1. the device comprises a first hoop plate, a second hoop plate, an annular track groove, a heliostat column, a connecting rod, a sighting device, a straight line in which the pointing direction of a pointing unit is, an object and a connecting key structure.
Detailed Description
The following description and the discussion of the embodiments of the present invention will be made more complete and less in view of the accompanying drawings, in which it is to be understood that the invention is not limited to the embodiments of the invention disclosed and that it is intended to cover all such modifications as fall within the scope of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1
Referring to fig. 1 and 2, a tool for measuring initial installation deviation of azimuth angle of heliostat upright 4 comprises a fixing part and a measuring part, wherein the fixing part is configured on a certain height of the heliostat upright 4 according to actual needs, and a characteristic site of the fixing part on the fixing part corresponds to a characteristic site of the upright on the heliostat upright 4 according to preset requirements; the measuring part comprises a pointing unit and a connecting unit, the first end of the connecting unit is connected with the fixing part in a matched manner, and the second end of the connecting unit is connected with the pointing unit in a matched manner; the connecting unit can drive the pointing unit to synchronously rotate around the central axis of the heliostat column 4, so that the pointing unit points at a preset target point; during the rotation of the pointing unit around the central axis of the heliostat mast 4, the distance between the projection of the straight line 7 of the pointing direction of the pointing unit on the horizontal plane and the projection of the central axis of the heliostat mast 4 on the horizontal plane remains unchanged all the time. The fixing part characteristic points on the fixing part and the stand column characteristic points on the stand column 4 of the heliostat correspond to each other according to preset requirements, so that the installation position of the measuring tool in the circumferential direction of the stand column of the heliostat can be ensured to be consistent with the theoretical preset position, and the starting position of the connecting unit rotating around the central axis of the stand column 4 of the heliostat can be conveniently determined. In addition, the distance between the projection of the straight line 7 of the pointing direction of the pointing unit on the horizontal plane and the projection of the central axis of the heliostat column 4 on the horizontal plane is set to be constant all the time, so as to avoid the deflection of the pointing unit in the direction of approaching or separating the central axis of the heliostat column 4 from the central axis of the heliostat column 4 in the process of rotating around the central axis of the heliostat column 4, and further avoid the influence on the measurement accuracy due to the deflection of the pointing unit. In addition, it should be noted that, the azimuth angle of the heliostat column 4 refers to a horizontal angle between a first ray and a second ray in a clockwise direction, wherein the heliostat column 4 is disposed perpendicular to a horizontal plane, the starting points of the first ray and the second ray are the same point on the central axis of the heliostat column 4, the first ray and the second ray are both perpendicular to the central axis of the heliostat column 4, the first ray is directed in the north direction, and the second ray is directed to the azimuth direction marking point on the heliostat column 4.
Specifically, in this embodiment, the fixed part is the staple bolt, and this staple bolt includes first staple bolt board 1 and second staple bolt board 2, and first staple bolt board 1 and second staple bolt board 2 can fastening connection also can the mutual separation, and when first staple bolt board 1 and second staple bolt board 2 fastening connection, the staple bolt whole can be firmly fixed in heliostat stand 4 predetermine high department, when relieving first staple bolt board 1 and second staple bolt board 2 fastening connection, can demolish the staple bolt from heliostat stand 4. The fixed part adopts the staple bolt structure, can effectively promote the convenience of installing and demolishing with measuring frock on heliostat stand 4. The fixed height of the anchor ear on the heliostat upright post 4 should ensure that the pointing unit is not blocked between the pointing unit and the preset target point in the process of pointing to the preset target point. In addition, in the embodiment, the staple bolt is connected through the connecting key structure 9 with heliostat stand 4 to, the position that connecting key structure 9 corresponds on the staple bolt is the fixed part characteristic site in the preceding, and the position that connecting key structure 9 corresponds on heliostat stand 4 is the stand characteristic site in the preceding, and wherein, connecting key structure 9 can play spacing effect, when installing the staple bolt, can make staple bolt and heliostat stand 4 can be fixed a position fast according to the requirement of predetermineeing in heliostat stand 4 circumference direction's relative position.
In addition, in the embodiment, the connecting unit is a connecting rod 5, the pointing unit is a sighting device 6, one end of the connecting rod 5 is rotationally connected with the sighting device 6, and the other end of the connecting rod 5 is connected with the anchor ear in a matched mode. Specifically, the hoop surface is provided with an annular track groove 3, and it should be noted that, in fig. 1, the annular track groove 3 only shows a part, the actual annular track groove 3 is a closed circumference, and the connecting rod 5 can rotate 360 degrees along the annular track groove 3, and simultaneously drives the sighting device 6 to synchronously rotate. During rotation, the distance between the projection of the pointing direction 7 of the sight on the horizontal plane and the projection of the central axis of the uprights 4 of the heliostat on the horizontal plane remains unchanged. The circumference of the annular track groove 3 is distributed with angle scales, so that operators can directly read the real-time angle of the connecting rod 5.
Further, since the photo-thermal project is installed on the heliostat upright, the heat absorption tower in the project site generally has a certain height, the heat absorption tower in the photo-thermal project site is taken as the target object 8, the preset point on the heat absorption tower is taken as the preset target point aimed by the aiming device 6, and since the heat absorption tower has a higher height, the heliostat upright 4 at different positions can be ensured to be seen through the preset target point without being blocked during installation.
Specifically, in this embodiment, the sight 6 uses a point on the edge of the side of the heat absorption tower as the preset target point of the sight 6 (i.e. when the line of the pointing direction of the sight is tangent to the edge of the heat absorption tower at the preset point, which represents that the sight 6 rotates in place), and the position of the edge of the side of the heat absorption tower is easy for the human eye to recognize, so that the sighting accuracy can be improved.
Further, in the present embodiment, the aiming direction of the aiming device 6 can swing up and down in a first plane, wherein the first plane is a plane passing through a straight line where the aiming direction of the aiming device 6 is located and parallel to the central axis of the heliostat upright 4. With reference to fig. 2, with this design, essentially in order to enable the aimer 6 to be pitch-adjusted, when there is a barrier between the aiming direction of the aimer 6 and the preset target point, by adjusting the pitch angle of the aimer 6, the barrier can be avoided, so that the measurement can be performed smoothly. Specifically, when the point on the edge of the side of the absorber tower is taken as the preset target point of the sight 6, since the heliostat column 4 and the absorber tower are both disposed perpendicularly to the ground, the angle of rotation of the connecting rod 5 about the central axis of the heliostat column 4 is not affected when the pitch angle of the sight is adjusted, wherein it is to be noted that the actual absorber tower is generally a cone-like structure having a thick bottom and a thin top, the straight line corresponding to the edge of the side of the absorber tower is not actually perfectly perpendicular to the ground, but the line segment on the edge of the side of the absorber tower can be regarded as being approximately perpendicular to the ground when the pitch angle of the sight 6 is not greatly adjusted up and down due to the high height of the absorber tower (the height of the absorber tower is about 200 meters).
In addition, it is emphasized that: in this embodiment, the straight line where the connecting rod 5 is located and the plane where the circumference formed by the annular track groove 3 is located are both perpendicular to the central axis of the heliostat column 4 and parallel to the horizontal plane. In this embodiment, the sight 6 is rotatably connected to the connecting rod 5, and with this design, the sight can adjust the pitch angle of the sight 6 by rotating around the central axis of the connecting rod 5.
Example 2
The embodiment provides a heliostat column azimuth initial installation deviation measurement method, which adopts the measurement tool in the embodiment 1, and specifically comprises the following steps:
s1: installing the measuring tool on the stand column of the heliostat to be measured, and enabling the characteristic points of the fixed part on the fixed part to correspond to the characteristic points of the stand column of the heliostat to be measured according to preset requirements;
S2: rotating the connecting unit and the pointing unit from a preset initial point, and recording the rotating angle of the connecting unit as a first rotating angle when the pointing unit points to a preset target point; specifically, in the present embodiment, the preset start point may be a position corresponding to the angular scale of 0 on the circumference of the annular track groove 3, and of course, the preset start point may be a position corresponding to other angular scales on the circumference of the annular track groove 3, as long as recording is enabled
S3: and comparing the first rotation angle with a second angle to obtain initial installation deviation of azimuth angles of the heliostat stand columns, wherein the second angle is an angle rotated when the azimuth angle initial installation deviation does not exist in the heliostat stand columns 4 to be measured, the installation position of the measuring tool on the heliostat stand columns 4 to be measured is the same as S1, and the connecting unit rotates from the initial position which is the same as the preset initial position in the step S2 to the point pointing unit pointing to the preset target point according to the same rotation direction as in the step S2.
Specifically, according to the coordinates of the heliostat post to be detected preset in the design stage, the coordinates of the preset target point, the preset relative positions of the characteristic points of the fixed part and the characteristic points of the post, the angle rotated when the connecting unit rotates from the preset initial point to the pointing unit points at the preset target point, which is the second angle in the foregoing, can be calculated theoretically (that is, the heliostat post 4 to be detected has no azimuth angle initial installation deviation).
The foregoing describes specific embodiments of the present application. It is to be understood that the application is not limited to the specific embodiments described above, and that various changes or modifications or combinations of one or more of the above-described embodiments may be made by those skilled in the art without affecting the spirit of the application, within the scope of the claims. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. Heliostat stand azimuth initial installation deviation measurement frock, its characterized in that includes:
The fixing part is configured on a certain height of the heliostat upright post according to actual needs, and the characteristic points of the fixing part on the fixing part correspond to the characteristic points of the upright post on the heliostat upright post according to preset requirements;
The measuring part comprises a pointing unit and a connecting unit, wherein the first end of the connecting unit is connected with the fixing part in a matched manner, and the second end of the connecting unit is connected with the pointing unit in a matched manner;
The connecting unit can drive the pointing unit to synchronously rotate around the central axis of the heliostat upright post, so that the pointing unit points at a preset target point;
in the process that the pointing unit rotates around the central axis of the heliostat stand column, the distance between the projection of the straight line of the pointing direction of the pointing unit on the horizontal plane and the projection of the central axis of the heliostat stand column on the horizontal plane is always kept unchanged.
2. The heliostat column azimuth initial installation deviation measurement tool of claim 1, wherein the pointing direction of the pointing unit is capable of swinging up and down in a first plane, wherein the first plane is a straight line passing through the pointing direction of the pointing unit and is parallel to the central axis of the heliostat column.
3. The heliostat column azimuth initial installation deviation measurement fixture according to claim 1 or 2, wherein the extending direction of the connection unit is perpendicular to the central axis of the heliostat column;
the straight line of the pointing direction of the pointing unit is always perpendicular to the central axis of the heliostat upright post and the extending direction of the connecting unit.
4. A heliostat column azimuth initial installation deviation measurement tool according to claim 3, wherein the connection unit is a connection rod, the pointing unit is a sight, and the sight is rotatably connected with the connection rod.
5. The heliostat column azimuth initial installation deviation measurement tool of claim 1, wherein the fixed portion and the heliostat column are connected by a connecting key structure, and wherein a location of the connecting key structure on the fixed portion is the fixed portion characteristic location, and a location of the connecting key structure on the heliostat column is the column characteristic location.
6. The heliostat column azimuth initial installation deviation measurement tool according to claim 1, wherein the fixing portion is provided with an annular track groove, and the connection unit rotates around a central axis of the heliostat column along the annular track groove.
7. The heliostat column azimuth initial installation deviation measurement tool of claim 6, wherein the annular rail groove is provided with angle scales.
8. The heliostat column azimuth initial installation deviation measurement tool of claim 1, wherein the fixed portion is a hoop, and the hoop comprises two hoop plates capable of being fastened and separated from each other so as to be fastened to or detached from the heliostat column.
9. The heliostat column azimuth initial installation deviation measurement fixture of claim 1, wherein the preset target point is a preset point on a heat absorption tower in a tower solar heat utilization system.
10. A method for measuring initial installation deviation of azimuth angles of heliostat columns, which is characterized by adopting the measuring fixture as claimed in any one of claims 1-9, comprising the steps of;
S1: installing the measuring tool on a stand column of the heliostat to be measured, and enabling the characteristic points of the fixed part on the fixed part to correspond to the characteristic points of the stand column of the heliostat to be measured according to preset requirements;
s2: rotating the connecting unit and the pointing unit from a preset starting point, and recording the rotating angle of the connecting unit as a first rotating angle when the pointing unit points to the preset target point;
And S3, comparing the first rotation angle with a second angle to obtain the initial installation deviation of the azimuth angle of the heliostat stand column, wherein the second angle is an angle which is rotated from the initial position which is the same as the preset initial position in the step S2 to the point direction unit pointing to the preset target point when the initial installation deviation of the azimuth angle of the heliostat stand column to be detected does not exist and the installation position of the measurement tool on the heliostat stand column to be detected is the same as that in the step S1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411109455.7A CN118640859B (en) | 2024-08-13 | 2024-08-13 | Heliostat upright post azimuth angle initial installation deviation measurement tool and measurement method |
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| CN202411109455.7A CN118640859B (en) | 2024-08-13 | 2024-08-13 | Heliostat upright post azimuth angle initial installation deviation measurement tool and measurement method |
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| Publication number | Publication date |
|---|---|
| CN118640859B (en) | 2024-11-05 |
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