焦点射线抛物面检测设备
By using a focal ray parabolic detection device to identify and adjust the deviation of the reflector mounting base, the system error problem caused by the gravity sag of the collector was solved, the concentration and interception rates of the parabolic trough solar thermal power plant were improved, the anti-interference ability was enhanced, and the overall efficiency and power generation of the solar thermal power plant were increased.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HARBIN QINGHEFENG TECHNOLOGY CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-17
AI Technical Summary
In existing parabolic trough solar thermal power plants, the detection equipment for parabolic collectors cannot identify systematic errors caused by the gravity-induced sagging of the collectors and collector tubes, resulting in a decrease in the concentration and interception rates, especially a significant decrease in the dynamic interception rate under wind speed or other mechanical disturbances.
A focal ray parabolic surface detection device is used to identify and adjust the position deviation of the reflector mounting base by simulating the ray source emitted from the focal point of a parabola, thereby eliminating systematic errors caused by gravity sagging and improving the interception rate and concentration rate of the solar collector.
It significantly improves the static and dynamic interception rate of the solar collector under all operating conditions, enhances the ability to resist wind speed interference, improves the solar thermal conversion efficiency and power generation of the solar thermal power plant, reduces the manufacturing and assembly precision requirements, and saves assembly time.
Smart Images
Figure CN224517707U_ABST
Abstract
Claims
1. A focal-area parabolic surface inspection device, comprising a radiation source (1), a scale (2), and a frame (3), characterized in that, The rays or their extensions from the X-ray source (1) pass through the focal point of the parabolic surface to be detected. A scale (21) corresponding to the X-ray source (1) is set on the scale (2). The X-ray source (1) and the scale (2) are connected and fixed by the bracket (11). The bracket (11) and the X-ray source (1) constitute the "focal X-ray parabolic surface detection unit (10)". There are two or more focal ray parabolic detection units (10), which are connected by a keel (3). The focal ray parabolic detection units (10) are arranged parallel to each other and perpendicular to the keel (3).
2. The focal point ray parabolic mirror testing apparatus of claim 1, wherein: The keel (3) is provided with keel mounting seat (31) at both ends, the length L between two keel mounting seats (31) is same with the length between two end mounting shafts (01) of the parabolic equipment or trough type parabolic reflector collector to be detected same.
3. The focal point ray parabola detection apparatus of claim 2, wherein: The stiffness between the two end keel mounting bases (31) of the parabolic surface testing equipment is the same as the stiffness between the two end mounting shafts (01) of the parabolic surface equipment or the parabolic reflector collector, so that the sag of each X-ray source (1) under the influence of gravity is the same as the sag of the corresponding position of the line connecting the two mounting shafts (01) of the parabolic surface equipment under the influence of gravity.
4. The focal point ray parabola detection apparatus of claim 1, wherein: The number and spacing of the focal ray parabolic detection units (10) on the keel (3) are the same as the number and spacing of the cross-section of the reflector mounting support (02) of the trough parabolic reflector collector to be tested, and they are located on the same parabolic cross section.
5. The focal point ray parabola detection apparatus according to claim 1 or 2, characterized by: A suspension rod or sling (32) is provided between the two keel mounting seats (31) of the keel (3). The suspension rod or sling (32) is provided with an adjustment mechanism (33). The stiffness of the keel (3) is adjusted by the adjustment mechanism (33) so that the drooping deformation of the corresponding keel (3) of the focal ray parabolic surface detection unit (10) is the same as the drooping deformation of the parabolic surface focal line caused by the drooping deformation of the parabolic surface equipment being detected, so as to reduce the error of the detection system.
6. The focal point ray parabola detection apparatus of claim 1, wherein: It also includes a focal line simulation device (4), which has the same length and stiffness as the radiation receiving device of the parabolic device being tested or the heat collection tube (03) of the parabolic reflector collector. The mounting structure (41) of the focal line simulation device (4) matches the mounting hole (05) of the mounting bracket (04) of the radiation receiving device or the heat collection tube (03). The upper end face of the focal line simulation device (4) fits the simulated focal line.
7. The focal point ray parabola detection apparatus of claim 1, wherein: A focal point marking structure (12) or a limit switch (13) is set at the corresponding focal point of the radiation source of the focal parabolic radiation detection device.
8. The focal ray parabolic surface detection device according to claim 7, characterized in that: A distance sensor (14) is installed on the upper side of the focal point of the ray source of the focal ray parabolic detection device.
9. The focal point ray parabola detection apparatus of claim 1, wherein: The scale (2) has the same number of dials (21) as the X-ray source (1), and the origin of the dial (21) is located on the path of the parallel line reflected by the focal point through the parabolic cross-sectional profile to be detected by the parabolic surface or the reflector mounting bracket (02).
10. The focal point ray parabola detection apparatus of claim 1, wherein: The parabolic surface testing equipment is installed and fixed using a side cantilever bracket (35). The side cantilever bracket (35) has at least two cantilevers perpendicular to the keel (3). The cantilever is equipped with two second mounting seats (34), with a spacing L that is the same as the spacing between the two keel mounting seats (31) of the keel (3), which are used to support the keel mounting seats (31) respectively.
11. The focal point ray parabolic mirror testing apparatus of claim 1, wherein: The parabolic surface testing equipment also includes a reflector seat (7), whose tilt angle and reflective surface height are the same as those of the parabolic reflector to be installed, and which matches the reflector mounting bracket (02) of the parabolic surface equipment to be tested. It is used to temporarily install on the reflector mounting bracket (02) and adjust the correct height position of the reflector mounting bracket (02) through the parabolic surface testing equipment.
12. The focal ray parabolic surface detection device according to claim 1, characterized in that: The scale (2) has a transparent structure with a reflector (22) at an angle of 45°-90° to the scale on the upper side of each scale (21) and facing the axial side of the keel (3).
13. The focal point ray parabola detection apparatus of claim 12, wherein: A camera imaging system (5) is installed on the upper side of the keel end facing the reflector (22).
14. The focal point ray parabola detection apparatus of claim 8, wherein: A height-adjustable structure is provided between the focal ray parabolic detection unit (10) and the keel (3), including a guide rod (23), a lifting rod (24) and the focal ray parabolic detection unit (10) are vertically fixedly connected, the lifting rod (24) passes vertically upward through the keel (3) and is connected to the worm wheel (36) by a thread, the worm wheel meshes with the worm (37), the worm (37) is connected to the rotation adjustment structure (38) and / or the motor (39), when the rotation adjustment structure (38) or the motor (39) is rotated, the worm (37) is rotated to mesh with the worm wheel (36) to rotate, and the worm wheel (36) is further rotated to drive the lifting rod (24) to rise and fall, so that the focal ray parabolic detection unit (10) moves vertically relative to the keel (3) along the guide rod (23).
15. The focal point ray paraboloid detection apparatus of any one of claims 1-14, wherein: The material of the dial (21) is the same as the radiation-sensitive material of the radiation source (1), which can convert the coordinate position of the radiation hitting the dial (21) into an electrical signal and transmit it to the data processing system to calculate the deviation from the origin of the dial.
16. The focal point ray parabola detection apparatus of claim 13, wherein: The camera imaging system (5) can capture the light spot hit by the scale (21) on the scale and the X-ray source (1), and identify the target coordinate position of the light spot on the scale (21) through the image recognition data processing system, and then calculate the deviation of the reflector mounting bracket (02) to obtain the recommended value of the adjustment height of the reflector mounting bracket (02).
17. The focal point ray parabola detection apparatus of claim 14, wherein: The limit switch (13) or the distance sensor (14) and the motor (39) constitute an automatic or remote control system. According to the signal of the limit switch (13) or the distance sensor (14), the control system rotates the motor (39) to adjust the height of the focal ray parabolic detection unit (10) relative to the keel (3), so that the focal point of the ray source of the focal ray parabolic detection unit (10) is fitted with the focal line corresponding to the focal point of the parabolic surface being detected or the focal line simulation device (4), thereby achieving precise focusing.