A heliostat mirror type detection device

Abstract

This utility model discloses a heliostat surface shape inspection device, relating to the field of solar thermal power generation technology. The device includes a support assembly, a moving guide rail, a first inspection assembly, and a second inspection assembly. The moving guide rail connects to the support assembly, and the first and second inspection assemblies are movably mounted on the guide rail. By placing the heliostat within the support assembly, the first and second inspection assemblies respectively inspect the surface shape of the heliostat. During the inspection process, the first inspection assembly performs a comprehensive surface shape inspection of the heliostat, quickly determining whether there are any problems with the surface shape, such as issues in a specific area. Simultaneously, the surface shape of the heliostat affects the size and shape of the light spot. After adjustments to the sub-mirrors, the second inspection assembly can immediately and quickly inspect specific areas of the sub-mirrors to verify whether the light spot has been improved.

Description

Technical Field

[0001] A heliostat mirror-type detection device relates to the field of solar thermal power generation technology. Background Technology

[0002] As the core concentrating component of tower solar thermal power generation systems, the surface accuracy of heliostats directly determines the reflection and concentration efficiency of solar radiation, thus affecting the power generation capacity, energy conversion efficiency, and operational stability of the entire power generation system. With the continuous increase in global demand for efficient solar energy utilization from the new energy industry, the installed capacity of tower solar power plants is constantly expanding. The size of a single heliostat has gradually increased from several square meters to tens of square meters, and the array size has expanded from thousands to tens of thousands of mirrors, placing higher demands on the accuracy, efficiency, and adaptability of heliostat surface inspection.

[0003] Currently, existing heliostat reflector surface inspection technologies mainly rely on single inspection methods, such as contour measurement, photogrammetry, or interferometry based on laser scanning. First, the inspection process often requires complex optical path adjustments and multiple positioning steps, resulting in low inspection efficiency and making it difficult to meet the rapid inspection needs of large-scale heliostat production lines. Second, existing devices are typically designed for mirrors of specific sizes or curvatures, lacking adaptability and unable to flexibly handle the inspection of heliostats of different specifications. Furthermore, traditional methods often rely on manual operation or fixed sensors, which easily introduce human error and are difficult to achieve full-area, high-resolution scanning, thus affecting the accuracy of surface defect identification.

[0004] It is evident that existing technologies suffer from problems such as limited detection methods, low detection efficiency, and the inability to quickly screen for surface shape differences in heliostats during manufacturing and inspection, thus reducing detection efficiency. Achieving efficient and accurate surface shape detection will provide technical support for the optimized operation of solar thermal power generation systems. Utility Model Content

[0005] In view of this, the main purpose of this utility model is to provide a heliostat surface shape detection device, which can solve the problems of the existing technology, such as the single detection method, low detection efficiency, inability to quickly screen heliostat surface shape differences during the manufacturing and inspection process of heliostats, and inability to perform secondary screening of sub-mirrors with surface shape differences to provide maintenance guidance to operators.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] The heliostat surface type detection device includes: a support assembly, a moving guide rail, a first detection assembly, and a second detection assembly. The moving guide rail is connected to the support assembly. The first detection assembly and the second detection assembly are movably disposed on the moving guide rail. By placing the heliostat inside the support assembly, the first detection assembly and the second detection assembly respectively detect the surface type of the heliostat.

[0008] In a preferred embodiment, the movable guide rail includes: a first movable guide rail, a second movable guide rail, and a third movable guide rail, wherein the first detection component is movably connected to the first movable guide rail and the second movable guide rail, and the second detection component is movably connected to the third movable guide rail;

[0009] In a preferred embodiment, the movable guide rail is connected to a drive unit, which drives the movable guide rail to move along the support assembly.

[0010] In a preferred embodiment, the first detection component includes: a first acquisition device, a mapping device, and a screen;

[0011] In a preferred embodiment, the mapping device is movably mounted on the first moving guide rail;

[0012] In a preferred embodiment, the first acquisition device is movably mounted on the second moving guide rail;

[0013] In a preferred embodiment, the curtain is fixedly connected to the upper side of the support assembly.

[0014] In a preferred embodiment, the second detection component includes: a second acquisition device and an array light source;

[0015] In a preferred embodiment, the second acquisition device is movably mounted on the third moving guide rail;

[0016] In a preferred embodiment, the array light source is disposed within the second acquisition device.

[0017] In a preferred embodiment, the driving unit includes: a first longitudinal driving unit and a second longitudinal driving unit, wherein the first longitudinal driving unit is disposed below the first movable guide rail and drives the first movable guide rail to move vertically up and down along the support component;

[0018] In a preferred embodiment, the second longitudinal drive unit is disposed above the second movable guide rail, driving the second movable guide rail to move vertically up and down along the support assembly.

[0019] In a preferred embodiment, the driving unit further includes: a lateral driving unit, wherein a plurality of lateral driving units are respectively disposed on the first moving guide rail, the second moving guide rail and the third moving guide rail;

[0020] In a preferred embodiment, the first acquisition device, the mapping device, and the second acquisition device are movably connected to the first moving guide rail, the second moving guide rail, and the third moving guide rail respectively via the lateral driving unit;

[0021] In a preferred embodiment, the first acquisition device, the mapping device, and the second acquisition device are moved along the first moving guide rail, the second moving guide rail, and the third moving guide rail, respectively, by the lateral driving unit.

[0022] In a preferred embodiment, the driving unit further includes a sliding device, wherein the sliding device is fixedly connected to both sides of the third moving guide rail, the sliding device is movably connected to the support assembly, and the sliding device drives the third moving guide rail to move along the support assembly.

[0023] In a preferred embodiment, a conveying unit is fixedly connected within the support assembly, and the conveying unit conveys the heliostat to the detection position.

[0024] In a preferred embodiment, the array light source is a plurality of LED lights, which are arranged in a circular array within the second acquisition device;

[0025] In a preferred embodiment, the array light source is positioned so that it illuminates the heliostat.

[0026] In a preferred embodiment, the drive unit is connected to a drive assembly, which includes a drive motor and a power supply. One end of the drive motor is connected to the power supply, and the other end is connected to the drive unit.

[0027] The heliostat mirror-type detection device of this utility model has the following beneficial effects:

[0028] The heliostat surface type detection device includes: a support assembly, a movable guide rail, a first detection assembly, and a second detection assembly. The movable guide rail is connected to the support assembly, and the first and second detection assemblies are movably mounted on the movable guide rail. By placing the heliostat inside the support assembly, the first and second detection assemblies respectively detect the surface type of the heliostat.

[0029] This heliostat surface shape inspection device uses a support assembly to provide overall frame support, and a movable guide rail to adjust the position of the inspection device to accommodate heliostats of different sizes. By placing the heliostat within the support assembly, the first and second inspection components inspect the heliostat surface shape separately. Within this framework, during the surface shape inspection process, the first inspection component performs a comprehensive surface shape inspection of the heliostat, quickly determining whether there are any problems with the surface shape, such as issues in a specific area. Simultaneously, the heliostat surface shape affects the size and shape of the heliostat's light spot; after adjustments to the sub-mirrors, the second inspection component can immediately and rapidly inspect specific areas of the sub-mirror to verify whether the light spot has been improved. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a heliostat mirror-type detection device according to one embodiment of the present disclosure;

[0032] Figure 2 This is a schematic diagram of the structure of a heliostat mirror-type detection device according to an embodiment of the present disclosure after removing the curtain;

[0033] Figure 3 This is a schematic diagram of the structure of a heliostat mirror-type detection device according to one embodiment of the present disclosure from another perspective;

[0034] Figure 4 This is a schematic diagram of the heliostat mirror-type detection device according to one embodiment of the present disclosure from another perspective.

[0035] Figure 5 for Figure 4 A partial enlarged view of point A in a heliostat type detection device according to an embodiment of the present disclosure.

[0036] [Explanation of Key Component Symbols]

[0037] 01. Heliostat;

[0038] 1. Support components;

[0039] 2. Moving guide rail;

[0040] 21. First moving guide rail; 22. Second moving guide rail; 23. Third moving guide rail;

[0041] 3. First detection component;

[0042] 31. First acquisition device; 32. Mapping device; 33. Screen;

[0043] 4. Second detection component;

[0044] 41. Second acquisition device; 42. Array light source;

[0045] 5. Drive unit;

[0046] 51. First longitudinal drive unit; 52. Second longitudinal drive unit; 53. Lateral drive unit;

[0047] 54. Sliding device; 6. Conveying unit. Detailed Implementation

[0048] The method of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0049] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0052] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0053] according to Figures 1-5 As shown, the heliostat surface shape inspection device includes: a support component 1 that provides overall frame support, and the support component 1 is used to mount the inspection device; a movable guide rail 2 for adjusting the position of the inspection device to accommodate inspections of heliostats of different sizes; a first inspection component 3 for surface shape inspection and a second inspection component 4 for secondary surface shape inspection. The movable guide rail 2 is connected to the support component 1 so that it can move along the frame of the support component 1. The first inspection component 3 and the second inspection component 4 are respectively movably mounted on the movable guide rail 2, allowing the lenses of the first inspection component 3 and the second inspection component 4 to adjust their positions to obtain more stable inspection data. By placing the heliostat 01 inside the support component 1, the first inspection component 3 and the second inspection component 4 respectively inspect the surface shape of the heliostat 01. Within this framework, during the surface shape inspection process, the first inspection component 3 performs surface shape inspection on the entire heliostat, quickly determining whether there are any problems with the surface shape of the heliostat, such as a problem with the surface shape of a certain area of ​​the heliostat. Meanwhile, the surface shape of the heliostat is related to the size and shape of the heliostat spot. After the sub-mirrors are adjusted, the second detection component 4 can immediately perform rapid detection and screening on specific areas of the sub-mirrors to verify whether the spot has been improved.

[0054] To allow the detection components to be mounted on the movable guide rail 2, the movable guide rail 2 includes: a first movable guide rail 21, a second movable guide rail 22, and a third movable guide rail 23, which are movable along the side of the support component 1 frame. This allows the detection device employing the phase-deflecting first detection component 3 to be movably connected to the first movable guide rail 21 and the second movable guide rail 22, respectively. Correspondingly, the second detection component 4 is movably connected to the third movable guide rail 23.

[0055] The movable guide rail 2 is connected to the drive unit 5, which allows the inspection equipment mounted on it to move flexibly on its support frame, facilitating the adjustment of the inspection position and adapting to the surface inspection of heliostats of different sizes. The drive unit 5 drives the movable guide rail 2 to move along the support assembly 1.

[0056] The first detection component 3 employing phase deflection detection includes: a first acquisition device 31 for projecting a pattern onto the mirror surface, which can be a high-resolution industrial camera to ensure the resolution of subtle fringe changes; and a mapping device 32 for projecting patterns such as sinusoidal fringes onto the heliostat mirror surface, which can be a high-resolution projector to ensure the stability of brightness and the geometric position of the pattern. The screen 33 can be a rigid screen to ensure flatness and consistent color and reflectivity.

[0057] Correspondingly, the mapping device 32 is movably mounted on the first moving guide rail 21, ensuring that the position of the mapping device 32 relative to the screen 33 can be adjusted so that an ideal sinusoidal pattern can be projected onto the screen 33. Similarly, the first acquisition device 31 is movably mounted on the second moving guide rail 22, ensuring that the position of the first acquisition device 31 relative to the heliostat 01 mirror surface can be adjusted. The screen 33 is fixedly connected to the upper side of the support assembly 1. This allows the mapping device 32, located below the screen 33, to project the pattern onto the screen 33 and reflect it onto the heliostat 01 mirror surface, which is also located below the screen 33, so that the pattern information is captured by the first acquisition device 31.

[0058] According to patent application number 2025103369764, the first detection component 3 collects multiple stripe images of different frequencies reflected by the heliostat 01 and then processes the data to detect the surface shape of the heliostat 01. In this application, the image of the stripe pattern reflected by the heliostat 01 captured by the first acquisition device 31 is also collected, saved to the computer, and then processed to determine the surface shape. Therefore, it will not be described in detail here.

[0059] To enable the second detection component 4 to perform a secondary rapid inspection of the heliostat 01, the second detection component 4 includes: a second acquisition device 41 and a light source 42 for projecting a high-contrast circular light spot image array onto the surface of the heliostat 01. Similarly, the second acquisition device 41 can be a high-resolution industrial camera, with its light source array 42 arranged circumferentially around the camera lens. The second acquisition device 41 is movably mounted on a third moving guide rail 23, allowing it to move along the X-axis above the support component 1, thereby adjusting the inspection according to the position of the sub-mirrors of the heliostat 01. In this specific embodiment, the light source array 42 consists of multiple LEDs arranged in a circular array within the second acquisition device 41, with the illumination direction of the light source array 42 facing the heliostat 01.

[0060] By combining the array light source 42 with the second acquisition device 41, with the center of the array light source 42 coaxial with the optical axis of the camera, the second detection component 4 can move along the X and Y axes on the upper side of the support component 1 via the moving guide rail 2. This allows a circular light spot image to be formed on each heliostat 01 sub-mirror, and the center point of the circular light spot serves as a reference point, moving the camera and array light source 42 to the "theoretical center normal" position of a certain sub-mirror. At this time, if the actual normal of the sub-mirror is completely consistent with the theoretical normal, then the reflected image of the array light source 42 in the mirror should be exactly located at the center of the camera image. However, due to manufacturing and installation errors, the actual normal of the sub-mirror is usually deviated. This causes the reflected image of the array light source 42 to deviate from the image center in the image captured by the camera. Similarly, by transmitting the image acquired by the second acquisition device 41 to a computer for image processing algorithms, the coordinates of the center image of the LED ring in the image are accurately calculated, thereby inversely solving the normal direction of the center point of each sub-mirror. Using the normal data of the sub-mirrors and the designed distance from heliostat 01 to the receiver, an algorithm simulates and calculates the shape, size, and position of the light spot formed by heliostat 01 on the receiver when sunlight shines perpendicularly. The simulated light spot is compared with the theoretical light spot. If the light spot size is too large, the shape is distorted, or the position is off, the overall surface shape of heliostat 01 is deemed unqualified. By comparing the actual normal of each sub-mirror with the theoretical normal, the system can calculate the length or number of turns required to adjust the screws fixing each sub-mirror, providing operators with clear and quantifiable maintenance guidance.

[0061] In this specific embodiment, the data acquisition and transmission of the second detection component 4 are the same as those in the patent document with patent application number 2022228657550. Therefore, the image acquisition and transmission method of the second detection component 4 will not be described in detail in this specific embodiment.

[0062] To enable the first detection component 3 to move up and down within the support component 1, the first acquisition device 31 can be moved closer to the heliostat 01, i.e., the second longitudinal drive unit 52 can be lowered. Alternatively, the first acquisition device 31 can be moved away from the heliostat 01, i.e., the second longitudinal drive unit 52 can be raised. Alternatively, the mapping device 32 can be moved closer to the screen 33, i.e., the first longitudinal drive unit 51 can be raised. Alternatively, the mapping device 32 can be moved away from the screen 33, i.e., the first longitudinal drive unit 51 can be lowered. The drive unit 5 includes: a first longitudinal drive unit 51 and a second longitudinal drive unit 52. The first longitudinal drive unit 51 is located below the first moving guide rail 21 and drives the first moving guide rail 21 to move vertically up and down along the support component 1. The second longitudinal drive unit 52 is located above the second moving guide rail 22 and drives the second moving guide rail 22 to move vertically up and down along the support component 1.

[0063] To enable the first detection component 3 and the second detection component 4 to adjust their positions in different directions to ensure consistent detection, the driving unit 5 further includes a lateral driving unit 53. Multiple lateral driving units 53 are respectively disposed on the first moving guide rail 21, the second moving guide rail 22, and the third moving guide rail 23. Each lateral driving unit 53 can move laterally along both sides of the moving guide rail 2. In this specific embodiment, there are three lateral driving units 53. The first acquisition device 31, the mapping device 32, and the second acquisition device 41 are movably connected to the first moving guide rail 21, the second moving guide rail 22, and the third moving guide rail 23 via the lateral driving units 53. The lateral driving units 53 enable the first acquisition device 31, the mapping device 32, and the second acquisition device 41 to move along the first moving guide rail 21, the second moving guide rail 22, and the third moving guide rail 23, respectively.

[0064] To further illustrate the movement of the second detection component 4 along the Y-axis on the upper side of the support component 1, the drive unit 5 also includes a sliding device 54. The sliding device 54 is fixedly connected to both sides of the third moving guide rail 23. The sliding device 54 does not interfere with the second longitudinal drive unit 52 and the curtain 33 when sliding, and is movably connected to the support component 1. Additionally, a conveying unit 6 is fixedly connected inside the support component 1. The conveying unit 6 conveys the heliostat 01 to the detection position for detection. Correspondingly, the drive unit 5 is connected to a drive assembly, which includes a drive motor and a power supply. One end of the drive motor is connected to the power supply, and the other end is connected to the drive unit.

[0065] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A heliostat surface type detection device, characterized in that, include: The support assembly (1), the moving guide rail (2), the first detection assembly (3) and the second detection assembly (4) are provided. The moving guide rail (2) is connected to the support assembly (1). The first detection assembly (3) and the second detection assembly (4) are respectively movably arranged on the moving guide rail (2). By placing the heliostat (01) inside the support assembly (1), the first detection assembly (3) and the second detection assembly (4) respectively detect the surface shape of the heliostat (01).

2. The heliostat surface type detection device according to claim 1, characterized in that, The movable guide rail (2) includes: a first movable guide rail (21), a second movable guide rail (22) and a third movable guide rail (23). The first detection component (3) is movably connected to the first movable guide rail (21) and the second movable guide rail (22), and the second detection component (4) is movably connected to the third movable guide rail (23). The movable guide rail (2) is connected to a drive unit (5), which drives the movable guide rail (2) to move along the support component (1).

3. The heliostat surface type detection device according to claim 2, characterized in that, The first detection component (3) includes: a first acquisition device (31), a mapping device (32), and a screen (33); The mapping device (32) is movably mounted on the first moving guide rail (21); The first acquisition device (31) is movably mounted on the second moving guide rail (22); The curtain (33) is fixedly connected to the upper side of the support assembly (1).

4. The heliostat surface type detection device according to claim 3, characterized in that, The second detection component (4) includes: a second acquisition device (41) and an array light source (42); The second acquisition device (41) is movably mounted on the third moving guide rail (23); The array light source (42) is located inside the second acquisition device (41).

5. The heliostat surface type detection device according to claim 4, characterized in that, The drive unit (5) includes: a first longitudinal drive unit (51) and a second longitudinal drive unit (52). The first longitudinal drive unit (51) is disposed below the first moving guide rail (21) and drives the first moving guide rail (21) to move vertically up and down along the support component (1). The second longitudinal drive unit (52) is disposed above the second moving guide rail (22) and drives the second moving guide rail (22) to move vertically up and down along the support assembly (1).

6. The heliostat surface type detection device according to claim 5, characterized in that, The drive unit (5) further includes: a transverse drive unit (53), and a plurality of transverse drive units (53) are respectively disposed on the first moving guide rail (21), the second moving guide rail (22) and the third moving guide rail (23); The first acquisition device (31), the mapping device (32) and the second acquisition device (41) are movably connected to the first moving guide rail (21), the second moving guide rail (22) and the third moving guide rail (23) respectively through the horizontal driving unit (53); The first acquisition device (31), the mapping device (32) and the second acquisition device (41) are moved along the first moving guide rail (21), the second moving guide rail (22) and the third moving guide rail (23) respectively by the lateral drive unit (53).

7. The heliostat surface type detection device according to claim 6, characterized in that, The driving unit (5) further includes a sliding device (54). The sliding device (54) is fixedly connected to both sides of the third moving guide rail (23). The sliding device (54) is movably connected to the support component (1). The sliding device (54) drives the third moving guide rail (23) to move along the support component (1).

8. The heliostat surface type detection device according to claim 7, characterized in that, The support assembly (1) is fixedly connected to a transmission unit (6), which transmits the heliostat (01) to the detection position.

9. The heliostat surface type detection device according to claim 8, characterized in that, The array light source (42) consists of multiple LED lights, which are arranged in a circular array within the second acquisition device (41). The array light source (42) is positioned so that it is directed toward the heliostat (01).

10. The heliostat surface type detection device according to claim 9, characterized in that, The drive unit (5) is connected to a drive component, which includes a drive motor and a power supply. One end of the drive motor is connected to the power supply, and the other end is connected to the drive unit.

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