Device and method for detecting whether focusing of a tower solar power system is accurate

Abstract

The application relates to a device and a method for detecting whether the focusing of a tower type solar power generation system is accurate, which comprises a first detection body and a second detection body, the first detection body is provided with a first plane, a second plane and a third plane which can both reflect light and allow light to pass through, the first plane, the second plane and the third plane are arranged at 90 degrees and intersect at a point O; the second detection body is provided with a fourth plane which can both reflect light and allow light to pass through, and the fourth plane is arranged on the front side of the first detection body far away from the point O. The application fully utilizes the reflection and light transmission principle of light, the irradiation direction of the sunlight is fed back through the image of the sun, and whether the image of the sun is aligned with the collector of the tower type solar power generation system can directly judge whether the focusing of the heliostat is accurate, the detection is very intuitive and convenient, the detection time is greatly saved, and the efficiency of rectification is improved; and the application has the advantages of simple structure, low cost and convenient large-scale application.

Description

TECHNICAL FIELD

[0001] The present application relates to a device and method for detecting whether the focusing of a tower type solar power generation system is accurate. BACKGROUND

[0002] Solar energy is an energy with small distribution density, intermittence and spatial distribution changing at any time, which is quite different from the conventional energy familiar to us in our life, and this puts forward higher requirements for the collection and utilization of solar energy. At present, the most widely used solar energy is solar water heater, but it can only meet the daily life needs of people and the heating degree of water is limited, and it cannot meet the requirements of high temperature hot water and steam in industry. In order to meet the higher requirements of people on solar heat utilization, it is required that the solar collector can more effectively absorb solar radiation energy.

[0003] Common solar thermal power generation methods include disc type, tower type, trough type and linear Fresnel type, among which the tower type system has shown advantages in large scale, small heat loss and high temperature. The tower type solar thermal power generation system mainly consists of four parts: a light collection system, an absorption and heat exchange system, a heat storage system and a power generation system. The light collection system includes a reflector, a support structure, a transmission device and a tracking control system. The function of the reflector is to collect solar radiation and concentrate it on the collector, which is composed of heliostats arranged in a certain way and capable of tracking the sun around the double axis. Each heliostat tracks the sun by rotating around the axis and reflects the solar energy radiated to its surface to the top collector of the tower to achieve the purpose of light collection. The tower type solar thermal power generation system adopts a light-heat-electricity conversion process route, i.e. first converting solar energy into heat energy, and then converting heat energy into electric energy. The medium is heated to high temperature by the tracking light collection type solar high temperature heater. The steam turbine generator is driven by high temperature steam to generate electricity, realizing high efficient heat-electricity conversion. No matter from the efficiency of the light collection system, the heat collection efficiency or the cost of the entire power station, the core part in the tower type solar thermal power station is how to make the heliostat accurately and automatically track the sun rotation to maximize the solar energy radiated to its surface.

[0004] The tower type solar thermal power generation system is also called a centralized system, which is installed with many solar reflectors, i.e. the above-mentioned heliostats, on a very large area of site, each of which is equipped with a tracking mechanism to accurately reflect and concentrate the sunlight to the collector at the top of a high tower. The light collection ratio of the collector can exceed hundreds or thousands of times, and the absorbed solar energy is converted into heat energy here, and then the heat energy is used for power generation.

[0005] Because heliostats consist of hundreds or even tens of thousands of heliostats, the sunlight that reaches the collector is a composite of light reflected from tens of thousands of heliostats. However, with so many heliostats, some of the sunlight reflected from them deviates from the target and misses the collector, making it difficult to determine which heliostats are causing the deflection. To address this issue, existing tower solar thermal power generation systems require a correction operation after each period of operation. However, with hundreds of thousands or even tens of thousands of heliostats, a correction operation requires performing it on each heliostat sequentially, which is cumbersome and time-consuming. Summary of the Invention

[0006] The first technical problem to be solved by the present invention is to provide a device for detecting whether the focusing of a tower solar power generation system is accurate, which has a simple structure, low cost and can quickly and accurately determine whether correction is needed, in view of the current status of the existing technology.

[0007] The second technical problem to be solved by the present invention is to provide a detection method using the above-mentioned device for detecting whether the focusing of a tower-type solar power generation system is accurate, based on the current status of the existing technology. This method can quickly and accurately detect whether the tower-type solar thermal power generation system needs correction, thereby saving detection time and improving correction efficiency.

[0008] The technical solution adopted by the present invention to solve at least one of the above technical problems is: a device for detecting whether the focusing of a tower solar power generation system is accurate, characterized by: comprising:

[0009] A first detection body having a first plane, a second plane, and a third plane that can both reflect light and allow light to pass through, wherein the first plane and the second plane are arranged vertically and form a 90-degree angle with each other, and the third plane is arranged horizontally and forms a 90-degree angle with the first plane and the second plane, and the first plane, the second plane, and the third plane intersect at a point O to form a backward-convex pyramid structure; and

[0010] The second detection body has a fourth plane that can both reflect light and allow light to pass through. The fourth plane is arranged obliquely on the front side of the first detection body away from point O, and the fourth plane is arranged at an acute angle to the central axis of the pyramid structure passing through point O.

[0011] In the above scheme, the first detection body includes a first plate, a second plate, and a third plate that can allow light to pass through. The first plate and the second plate are arranged vertically and form a 90-degree angle with each other. The third plate is arranged horizontally and forms a 90-degree angle with the first plate and the second plate. The first plate, the second plate, and the third plate intersect at point O. The front side and / or rear side of the first plate constitute the first plane, the front side and / or rear side of the second plate constitute the second plane, and the front side and / or rear side of the third plate constitute the third plane. The second detection body is a fourth plate, which is arranged obliquely on the front side of the first detection body away from point O. The front side wall or rear side wall of the fourth plate constitutes the fourth plane. The above-mentioned first plate, second plate, third plate, and fourth plate can be made directly of carbonated polyester sheets, glass sheets, resin sheets, nylon sheets, acrylic sheets, polarizers, etc., or can be made by coating light-transmitting or light-reflecting materials on any side of a transparent substrate.

[0012] To facilitate observation, a first camera capable of observing the light spot at the first, second, and third planes, as well as at point O, is positioned above the first and second detection bodies. This first camera is positioned between the first and second detection bodies and corresponds to the fourth plane. The direction in which the first camera captures image signals is perpendicular to the central axis of the pyramid structure passing through point O. This first camera allows for direct observation of the light spot position, or it can be connected to a control system for automatic determination of the light spot position, which is more convenient.

[0013] As another solution, the first detection body and the second detection body are formed into one body and constitute an integral entity structure. The entity structure is made of a transparent or translucent material and further includes a third detection body provided on the rear side of the first detection body that can both reflect light and allow light to pass through. The front side of the third detection body is recessed inward to form a pyramidal cavity that can enclose the pyramidal structure. The rear side of the third detection body has a fifth plane parallel to the plane where the pyramidal cavity opening is located. The pyramidal cavity has a sixth plane that can respectively fit with the first plane, a seventh plane that fits with the second plane, and an eighth plane that fits with the third plane. When the first detection body and the second detection body are made into an integral entity structure, the scene behind the pyramidal structure cannot be observed due to the strong refraction of light. The provision of the third detection body can offset the refraction of light.

[0014] Preferably, a fourth detection body is disposed in front of the second detection body. The fourth detection body is a solid pyramidal structure that can both reflect and transmit light, and the pyramidal structure has an inclined surface that aligns with the fourth plane of the second detection body. The inclined surface of the fourth detection body aligns with the fourth plane to eliminate refraction, so that sunlight does not refract when passing through the fourth detection body and the second detection body.

[0015] Preferably, a second camera for observing the first plane, the second plane, the third plane and the light spot at point O is provided on the upper or lower side of the second detection body. The second camera is arranged corresponding to the fourth plane and the direction of capturing the image signal is perpendicular to the central axis of the pyramid structure passing through point O.

[0016] A detection method using the above-mentioned device for detecting whether the focusing of a tower-type solar power generation system is accurate is characterized by:

[0017] A device for detecting whether the tower solar power generation system is accurately focused is placed between the heliostat and the concentrating tower of the tower solar power generation system, with the pyramid structure on the first detection body facing the concentrating tower of the tower solar power generation system and the second detection body facing the heliostat;

[0018] Move the device used to detect whether the tower solar power generation system is focusing accurately so that point O of the pyramid structure on the first detection body is aligned with the collector on the concentrating tower of the tower solar power generation system, and observe the position of the light spot reflected by the heliostat on the front side of the first detection body from above the second detection body;

[0019] If the light spot is located at point O of the pyramid structure on the first detection object, it indicates that the heliostat and the collector on the tower of the solar power generation tower are accurately focused. If the light spot deviates from point O of the pyramid structure on the first detection object, it indicates that the heliostat and the collector on the tower of the solar power generation tower are not accurately focused and correction processing is required.

[0020] A detection method using the above-mentioned device for detecting whether the focusing of a tower-type solar power generation system is accurate is characterized by:

[0021] A device for detecting whether the tower solar power generation system is accurately focused is placed between the heliostat and the concentrating tower of the tower solar power generation system, with the pyramid structure on the first detection body facing the concentrating tower of the tower solar power generation system and the second detection body facing the heliostat;

[0022] Move the device used to detect whether the tower solar power generation system is focusing accurately so that point O of the pyramid structure on the first detection body is aligned with the collector on the concentrating tower of the tower solar power generation system, and observe the position of the light spot reflected by the heliostat on the front side of the first detection body from above the second detection body;

[0023] If the light spot is located at point O of the pyramid structure on the first detection object, it indicates that the heliostat and the collector on the tower of the solar power generation tower are accurately focused. If the light spot deviates from point O of the pyramid structure on the first detection object, it indicates that the heliostat and the collector on the tower of the solar power generation tower are not accurately focused and correction processing is required.

[0024] Compared with the existing technology, the advantages of the present invention are: the present invention fully utilizes the principles of light reflection and transmission, and uses the image of the sun to feedback the direction of sunlight. Whether the sun image is aligned with the collector of the tower solar power generation system can directly determine whether the heliostat is focusing accurately. The detection is very intuitive and convenient, greatly saving detection time and facilitating improved correction efficiency. In addition, the present invention has a simple structure and low cost, making it easy to implement large-scale applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of Example 1 of the present invention;

[0026] Figure 2 This is another structural diagram of Example 1 of the present invention;

[0027] Figure 3 This is a schematic structural diagram of the first detection body according to Example 1 of the present invention;

[0028] Figure 4 This is a schematic structural diagram of Example 2 of the present invention;

[0029] Figure 5 for Figure 4 A schematic diagram of a structure in which a second camera is hidden;

[0030] Figure 6 for Figure 4 Exploded view of

[0031] Figure 7 for Figure 4 Another exploded view of;

[0032] Figure 8 This is a usage state diagram of an embodiment of the present invention;

[0033] Figure 9 This is the design principle diagram on which the present invention is based. DETAILED DESCRIPTION

[0034] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0035] Example 1:

[0036] like Figures 1-3As shown, the device for detecting whether a tower-type solar power generation system is accurately focused in this embodiment includes a first detection body 1 and a second detection body 2. The first detection body 1 has a first plane 11, a second plane 12, and a third plane 13 that can both reflect light and allow light to pass through. The first plane 11 and the second plane 12 are both arranged vertically and form a 90-degree angle a between them. The third plane 13 is arranged horizontally and forms a 90-degree angle b with the first plane 11 and the second plane 12. The first plane 11, the second plane 12, and the third plane 13 intersect at a point O, thereby forming a backward-protruding pyramid structure 10. The second detection body 2 has a fourth plane 21 that can both reflect light and allow light to pass through. The fourth plane 21 is arranged obliquely on the front side of the first detection body 1 away from point O. The fourth plane 21 is arranged at a 45-degree angle c to the central axis of the pyramid structure 10 passing through point O.

[0037] The first detection body 1 of this embodiment includes a first plate 110, a second plate 120, and a third plate 130, through which light can pass. The first plate 110 and the second plate 120 are arranged vertically and form a 90-degree angle with each other. The third plate 130 is arranged horizontally and forms a 90-degree angle with the first plate 110 and the second plate 120. The first plate 110, the second plate 120, and the third plate 130 intersect at point O. The front side and / or rear side of the first plate 110 constitute a first plane 11, the front side and / or rear side of the second plate 120 constitute a second plane 12, and the front side and / or rear side of the third plate 130 constitute a third plane 13. The second detection body 2 is a fourth plate, which is arranged obliquely on the front side of the first detection body 1 away from point O. The front side wall or rear side wall of the fourth plate constitutes a fourth plane 21. The first plate 110, the second plate 120, the third plate 130 and the fourth plate can be made directly of carbonated polyester sheets, glass sheets, resin sheets, nylon sheets, acrylic sheets, polarizing films, etc., or can be made by coating any side of a transparent substrate with a light-transmitting or light-reflecting material.

[0038] To facilitate observation, a first camera 3 capable of observing the first plane 11, second plane 12, third plane 13, and the light spot at point O is provided to the sides of the first and second detection bodies 1 and 2. This first camera 3 is positioned between the first and second detection bodies 1 and 2 and corresponds to the fourth plane 21. The direction in which the first camera 3 captures the image signal is perpendicular to the central axis of the pyramid structure passing through point O. This first camera 3 allows for direct observation of the light spot position, or it can be connected to a control system for automatic determination of the light spot position, which is more convenient.

[0039] In order to facilitate taking and placing, a shell can also be provided outside the detection device, but the shell needs to be through in the front-to-back direction corresponding to the first detection body 1 and the second detection body 2 without blocking light.

[0040] The detection method of the device for detecting whether the focusing of a tower solar power generation system is accurate is applied in this embodiment as follows:

[0041] like Figure 8 As shown, the device M for detecting whether the tower solar power generation system is accurately focused is placed between the heliostat 100 and the concentrating tower 200 of the tower solar power generation system, with the pyramid structure 10 on the first detection body 1 placed toward the concentrating tower 200 of the tower solar power generation system, and the second detection body 2 placed toward the heliostat 100;

[0042] Move the device M for detecting whether the tower-type solar power generation system is accurately focused, aligning point O of the pyramid structure 10 on the first detection body 1 with the collector 201 on the concentrating tower of the tower-type solar power generation system, and use the first camera 3 above the second detection body 2 to observe the position of the light spot (the image of the sun) reflected by the heliostat 100 on the front side of the first detection body 1;

[0043] If the light spot is located at point O of the pyramid structure 10 on the first detection object 1, it indicates that the heliostat 100 and the collector on the concentrating tower 200 of the tower-type solar power generation system are accurately focused. If the light spot deviates from point O of the pyramid structure 10 on the first detection object 1, it indicates that the heliostat 100 and the collector on the concentrating tower 200 of the tower-type solar power generation system are not accurately focused, and correction processing is required.

[0044] Example 2:

[0045] The difference between this embodiment and embodiment 1 is that:

[0046] like Figures 4-7 As shown, the first detection body 1' and the second detection body 2' of this embodiment are formed into one body and constitute an integral physical structure, which is made of transparent or translucent materials, such as carbonated polyester, glass, resin, nylon, acrylic, polarizing material, etc.

[0047] Because light still experiences significant refraction when the first and second detection bodies 1' and 2' are integrated into a solid structure, the scene behind the pyramid structure 10' cannot be observed. Therefore, a third detection body 4 is positioned behind the first detection body 1' to both reflect and allow light to pass through. The front of the third detection body 4 is recessed inward to form a pyramid-shaped cavity 40 that encloses the pyramid structure. The rear side of the third detection body 4 has a fifth plane 41 parallel to the plane of the opening of the pyramid-shaped cavity 40. This fifth plane 41 is also parallel to the plane formed by the intersection of the first, second, and third planes 11', 12', and 13'. The pyramid-shaped cavity 40 has a sixth plane 42 that aligns with the first, second, and third planes 11', 12', and 13', respectively, to counteract the refraction of light.

[0048] In this embodiment, a fourth detection body 5 is disposed in front of the second detection body 2'. This fourth detection body 5 is a solid triangular pyramid that both reflects and allows light to pass through. This pyramid has an inclined surface 51 that aligns with the fourth flat surface 14' of the second detection body 2'. The fourth detection body 5 in this embodiment is not limited to a triangular pyramid shape; this embodiment will only illustrate this triangular pyramid-shaped fourth detection body 5. The alignment of the inclined surface 51 of the fourth detection body 5 with the fourth flat surface 14 eliminates refraction by allowing light to pass through the inclined surface 511, preventing sunlight from refracting when it passes through the fourth and second detection bodies.

[0049] A second camera 6 for observing the first plane, the second plane, the third plane and the light spot at point O is provided on the upper or lower side of the second detection body 2. The second camera 6 is arranged corresponding to the fourth plane 14 and the direction of capturing the image signal is perpendicular to the central axis of the pyramid structure passing through point O.

[0050] The detection method of the device for detecting whether the focusing of a tower solar power generation system is accurate is applied in this embodiment as follows:

[0051] The device M for detecting whether the tower solar power generation system is accurately focused is placed between the heliostat 100 and the concentrating tower 200 of the tower solar power generation system, with the pyramid structure on the first detection body 1' facing the concentrating tower 200 of the tower solar power generation system and the fourth plane 14 facing the heliostat 100;

[0052] Move the device M for detecting whether the tower-type solar power generation system is accurately focused, aligning point O of the pyramid structure on the first detection body 1' with the collector 201 of the concentrating tower of the tower-type solar power generation system, and using the second camera 6 above or below the second detection body 2 to observe the position of the light spot reflected by the heliostat 100 on the front side of the first detection body 1';

[0053] If the light spot is located at point O of the pyramid structure on the first detection object 1', it indicates that the heliostat 100 and the collector 201 on the concentrating tower of the tower-type solar power generation system are accurately focused. If the light spot deviates from point O of the pyramid structure on the first detection object 1', it indicates that the heliostat 100 and the collector 201 on the concentrating tower of the tower-type solar power generation system are not accurately focused, and correction processing is required.

[0054] In the present specification and claims, directional terms such as "front," "back," "up," "down," "left," "right," "side," "top," and "bottom" are used to describe various exemplary structural parts and components of the present invention. However, these terms are used herein for convenience of description only and are based on the exemplary orientations shown in the accompanying drawings. Because the embodiments disclosed herein can be arranged in various orientations, these directional terms are intended for illustrative purposes only and should not be construed as limiting. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0055] The design principle of the device for detecting whether the focusing of a tower solar power generation system is accurate is as follows:

[0056] Before explaining this principle, let's first introduce the structure and principle of existing corner reflectors. A corner reflector is composed of three mutually perpendicular plane mirrors in the shape of right-angled isosceles triangles. The most important feature of a corner reflector is that no matter what angle the light enters from, after three reflections by the three plane mirrors, it will be reflected back in parallel. Looking at the corner reflector from the front, you can see that the corner where the three perpendicular plane mirrors meet has three ridges. These ridges are reflected by the opposite plane mirror, forming a crosshair. If you focus one eye on the corner formed by the intersection of the three mirrors, you will find that no matter how you move your head, the center of your open eye will always be at the crosshair at the corner. Similarly, if you use a camera to capture the corner formed by the intersection of the three mirrors, you will find that no matter how you move the camera, the center of the lens will always be at the crosshair at the corner.

[0057] The first detection body used in the present invention is different from the above-mentioned corner reflector. The three mutually perpendicular planes that make up the first detection body need to be semi-transparent and semi-reflective, so that objects behind the corner reflector can be seen through the corner reflector. The first detection body is divided into front and back directions. The front is an equilateral triangle opening plane, and the back is a corner tip. If a line is drawn between the corner tip and the midpoint of the equilateral triangle opening plane, then this line is called the central axis of the first detection body. Another semi-transparent reflector (second detection body) is installed in front of the equilateral triangle opening plane, with its center located on the central axis and forming an angle of 45 degrees with the central axis.

[0058] like Figure 9 As shown, where:

[0059] a.The sun in the sky;

[0060] b. Heliostat;

[0061] c. After sunlight is reflected by the heliostat, a virtual image of the sun appears behind the heliostat;

[0062] d. central axis;

[0063] e. A second detection body that is in front of the first detection body and is at a 45-degree angle to the central axis;

[0064] f. The first test body;

[0065] g. The collector on the concentrating tower (the target to be illuminated by the sunlight reflected by the heliostat);

[0066] h. The virtual image of the sun behind the heliostat c is then reflected by the first detection body as a second virtual image;

[0067] i. The virtual image of the first detection body after being reflected by the second detection body;

[0068] j. Virtual image of the central axis;

[0069] k is the virtual image of the collector g after being reflected by the first detector;

[0070] l. The second virtual image of the sun reflected by the first detection body h is then reflected by the second detection body and then the third virtual image;

[0071] m.Observer (human eye or camera);

[0072] n.Virtual image of the observer (human eye or camera).

[0073] When the sun a in the sky is reflected by heliostat b, a virtual image c is created behind heliostat b. This virtual image c can only be observed in the area in front of heliostat b, where the sunlight reflected by heliostat b shines. Therefore, we place the detection device in front of heliostat b, where the sunlight reflected by heliostat b shines, and align the detection device's central axis d with the direction of the sunlight reflected by heliostat b.

[0074] The detection device's horn tip (point O) faces the collector g on the concentrating tower, while the second detection object e faces the virtual image of the sun c behind the heliostat b. Sunlight reflected from the heliostat b then strikes the second detection object e. Because the second detection object e has a certain degree of transparency, a small amount of sunlight reflected from the heliostat b passes through the second detection object e. This small amount of sunlight strikes the first detection object f. Because the first detection object f is semi-transparent and semi-reflective, some of the sunlight is reflected back by the first detection object f. This sunlight reflected back by the first detection object f is parallel to the sunlight striking the first detection object f, but in the opposite direction. This creates a second virtual image of the sun behind the first detection object f, in the direction indicated by the horn tip. This is the second virtual image h of the sun.

[0075] The sunlight reflected from the first detection object f is parallel to the sunlight that hits the first detection object f, but in the opposite direction. Because of this reversed sunlight, if you look from in front of the first detection object f, toward the corner tip of the first detection object f, you should be able to see a virtual image of the sun reflected from the first detection object f. The observed scene is as follows:

[0076] As previously explained, the direction of the detection device's central axis d aligns with the direction of sunlight reflected by the heliostat b. Therefore, the virtual image h of the sun reflected by the first detection object f is located at an infinite distance on the central axis d of the first detection object f. Furthermore, when the sunlight reflected by the heliostat b accurately illuminates the collector g on the concentrating tower, the central axis d of the detection device is directed toward the collector g on the concentrating tower. Thus, the collector g on the concentrating tower, the virtual image h of the sun reflected by the first detection object f, and the corner point O of the first detection object f all lie on a straight line, the central axis d of the detection device. Because the first detection object f is translucent, the collector g on the concentrating tower can be seen through the first detection object f from in front of the first detection object f. Since the virtual image of the sun is a virtual phenomenon, and the collector g is a physical object, which cannot block the virtual image, an observer in front of the first detector f, at the central axis d, should be able to observe the overlap of the center of the collector g on the concentrating tower, the center of the virtual image h of the sun reflected by the first detector f, and the corner point O of the first detector f. However, if the observer observes in this way, the sunlight reflected by the heliostat b will be blocked. If the sunlight reflected by the heliostat b is blocked, the first detector f will not be able to reflect sunlight. This is the fundamental reason why the second detector e must be installed in front of the first detector f. The center of the second detector e is on the central axis d, at a 45-degree angle to the central axis d, which can reflect the sunlight reflected by the first detector f at a further 90-degree angle. This allows the virtual image of the sun reflected by the first detector f to be observed from one side of the first detector f. If the observer observes from the side, the sunlight is not blocked. Because the second detection body e forms a 45-degree angle with the central axis d, the central axis d will be bent 90 degrees after reflection. When the observer observes from the side, the observer's eyes or the center of the camera can be placed at the position of the reflected central axis d.

Claims

1. A device for detecting whether a tower solar power generation system is accurately focused, characterized by: include A first detection body having a first plane, a second plane, and a third plane that can both reflect light and allow light to pass through, wherein the first plane and the second plane are arranged vertically and form a 90-degree angle with each other, and the third plane is arranged horizontally and forms a 90-degree angle with each of the first and second planes, and the first, second, and third planes intersect at a point O to form a backward-convex pyramid structure; sunlight reflected from the first detection body is parallel to sunlight incident on the first detection body and in opposite directions; a second detection body, the second detection body having a fourth plane capable of both reflecting light and allowing light to pass therethrough, the fourth plane being arranged obliquely on the front side of the first detection body away from point O, the fourth plane being arranged at an acute angle to a central axis of the pyramid structure passing through point O; A device for detecting whether the tower solar power generation system is focusing accurately is placed between the heliostat and the concentrating tower of the tower solar power generation system, so that the pyramid structure on the first detection body is placed toward the concentrating tower of the tower solar power generation system, and the second detection body is placed toward the heliostat.

2. The device for detecting whether the focusing of a tower solar power generation system is accurate according to claim 1, characterized in that: The first detection body includes a first plate, a second plate, and a third plate through which light can pass. The first plate and the second plate are arranged vertically and form a 90-degree angle between them. The third plate is arranged horizontally and forms a 90-degree angle with the first plate and the second plate. The first plate, the second plate, and the third plate intersect at point O. The front side surface and / or the rear side surface of the first plate constitute the first plane, the front side surface and / or the rear side surface of the second plate constitute the second plane, and the front side surface and / or the rear side surface of the third plate constitute the third plane.

3. The device for detecting whether the focusing of a tower solar power generation system is accurate according to claim 2, characterized in that: The second detection body is a fourth flat plate, which is arranged obliquely on the front side of the first detection body away from point O, and the front side wall or the rear side wall of the fourth flat plate constitutes the fourth plane; it also includes a first camera, which is located between the first detection body and the second detection body and is arranged corresponding to the fourth plane.

4. The device for detecting whether the focusing of a tower solar power generation system is accurate according to claim 3, characterized in that: The direction in which the first camera captures the image signal is perpendicular to the central axis of the pyramid structure passing through point O.

5. The device for detecting whether the focusing of a tower solar power generation system is accurate according to claim 1, characterized in that: The first detection body and the second detection body are formed into one body and constitute an integral physical structure. The physical structure is made of transparent or translucent material and also includes a third detection body arranged on the rear side of the first detection body, which can both reflect light and allow light to pass through. The front side of the third detection body is recessed inward to form a pyramidal cavity that can enclose the pyramidal structure. The rear side of the third detection body has a fifth plane parallel to the plane where the opening of the pyramidal cavity is located.

6. The device for detecting whether the focusing of a tower solar power generation system is accurate according to claim 5, characterized in that: A fourth detection body is arranged on the front side of the second detection body. The fourth detection body is a solid structure, a pyramid that can both reflect light and allow light to pass through, and the pyramid has an inclined surface arranged close to the fourth plane of the second detection body; it also includes a second camera, which is arranged corresponding to the inclined surface and the direction of capturing image signals is perpendicular to the central axis of the pyramid structure passing through point O.

Images