A device for inspecting defects in the underwater structure of a hydropower station gate slot.

Abstract

This utility model discloses a device for inspecting defects in the above-water structure of a hydropower station gate slot. It includes several winches arranged circumferentially along the top edge of the gate slot, with a detection component connected to the bottom of the traction ropes of all winches. This utility model optimizes existing inspection methods for the above-water portion of hydropower station gate slot structures, offering high efficiency and reliable safety. It can be widely applied in the field of hydraulic engineering structure maintenance.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic engineering structure maintenance, and in particular to a device for inspecting defects in the underwater structure of a hydropower station gate slot. Background Technology

[0002] The construction of major dams and hydropower stations in my country spans a long period, resulting in generational differences in technical standards and material performance. Coupled with aging issues arising from long-term operation, it is essential to conduct thorough inspections to identify hidden defects and ensure the structural safety of critical components. Among these inspections, the intake gate slot and its surrounding concrete structure are mandatory items during annual unit overhauls. This is because the gate slot is a high-risk area for defects in hydropower station hydraulic structures; the inspection aims to confirm the existence of structural defects and safety hazards and address them promptly.

[0003] Currently, the main technical methods for inspecting the underwater portion of the gate structure include underwater laser imaging, underwater sonar imaging, and ROVs equipped with high-definition cameras. However, research on the inspection of the above-water portion of the gate structure is still in its early stages both domestically and internationally, primarily relying on primitive manual photogrammetry methods. These methods suffer from low efficiency and inadequate safety guarantees, and conventional underwater inspection methods cannot meet the requirements for this part.

[0004] Generally, the height difference between the top and bottom of the tailrace channel ranges from tens to hundreds of meters. Currently, maintenance personnel mainly rely on the gantry crane on the dam top and the cage to enter the bottom of the channel for inspection. During the cage's travel, because the fast gate is not lifted out of the channel and the space is too small to accommodate only one cage, it is easy to collide with surrounding facilities. This method is inherently dangerous, and the air quality inside the channel is poor, making high-altitude inspections highly risky.

[0005] Therefore, while satisfying the requirements for inspecting the underwater portion of the sluice gate structure, it is necessary to optimize the existing methods for inspecting the above-water portion of the sluice gate structure and propose a detection method that is significantly more efficient and safer than traditional methods. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology and provide a device for inspecting defects in the above-water structure of a hydropower station gate slot, thereby optimizing the existing detection method for the above-water part of the gate slot structure, which is efficient and safe.

[0007] This utility model provides a device for inspecting defects in the underwater structure of a hydropower station gate slot, comprising several winches arranged circumferentially along the top edge of the hydropower station gate slot, with a detection component connected to the bottom of the traction rope of all winches.

[0008] In the above technical solution, the detection component has a base plate connected to the traction rope, a plurality of high-definition cameras are arranged circumferentially along the bottom edge of the base plate, a controller is provided on the bottom surface of the base plate, all the high-definition cameras are connected to the signal input terminal of the controller, the signal output terminal of the controller is provided with a display connected to it through a first data line, and the detection component also includes a light source.

[0009] In the above technical solution, the light source is a plurality of LED lighting strips arranged circumferentially on the bottom edge of the substrate, and the bottom surface of the substrate is also provided with a battery pack electrically connected to the LED lighting strips.

[0010] In the above technical solution, the detection component also includes a remote controller, which is connected to the signal input terminal of the controller via a second data line.

[0011] In the above technical solution, the bottom surface of the substrate is also provided with a wireless image transmission device, and the detection component also includes a wireless image transmission receiver device connected to the wireless image transmission device.

[0012] In the above technical solution, a laser rangefinder is provided at the center of the bottom surface of the substrate, and the laser rangefinder is connected to the signal terminal of the controller.

[0013] In the above technical solution, the high-definition camera is symmetrically arranged along the substrate.

[0014] In the above technical solution, there are four winches, which are located at the four corners of the top of the gate slot of the hydropower station. There are four high-definition cameras and three LED lighting strips.

[0015] In the above technical solution, the battery pack consists of two external lithium battery packs.

[0016] In the above technical solution, the display is equipped with a wireless receiving card that is wirelessly connected to the wireless image transmission receiving device.

[0017] This utility model is a defect inspection device for the underwater structure of a hydropower station gate slot, and has the following beneficial effects:

[0018] This invention can comprehensively test the waterless structure of the door slot, ensuring the quality of the test data, protecting the safety of personnel and equipment during testing, and effectively reducing construction time, thus reducing costs and increasing efficiency. Attached Figure Description

[0019] Figure 1 This is an overall structural diagram of the device for inspecting defects in the underwater structure of a hydropower station gate slot according to this utility model;

[0020] Figure 2 This is a schematic diagram of the detection component in the device for inspecting defects in the underwater structure of a hydropower station gate slot, which is a product of this invention. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but these embodiments should not be construed as limiting the present invention.

[0022] See Figure 1 This utility model is a device for inspecting defects in the underwater structure of a hydropower station gate slot. It includes several winches 2 arranged circumferentially along the top edge of the hydropower station gate slot 1. The bottom of the traction rope of all winches 2 is connected to a detection component 3.

[0023] See Figure 2 The detection component 3 has a base plate 4 connected to the traction rope. Several high-definition cameras 5 are arranged circumferentially along the bottom edge of the base plate 4. A controller 6 is provided on the bottom surface of the base plate 4. All the high-definition cameras 5 are connected to the signal input terminal of the controller 6. The signal output terminal of the controller 6 is provided with a display 8 connected to it through a first data line 7.

[0024] The detection component 3 also includes a light source, which is a plurality of LED lighting strips 9 arranged circumferentially on the bottom edge of the substrate 4. The bottom surface of the substrate 4 is also provided with a battery pack 10 electrically connected to the LED lighting strips 9. In this embodiment, the battery pack 10 is two dry batteries.

[0025] The detection component 3 also includes a remote controller 11, which is connected to the signal input terminal of the controller 6 via a second data line 12.

[0026] The bottom surface of the substrate 4 is also provided with a wireless image transmission device 13, and the detection component 3 also includes a wireless image transmission receiver device 14 connected to the wireless image transmission device 13. The display 8 is provided with a wireless receiver card that is wirelessly connected to the wireless image transmission receiver device 14.

[0027] A laser rangefinder 15 is provided at the center of the bottom surface of the substrate 4, and the laser rangefinder 15 is connected to the signal terminal of the controller 6.

[0028] The high-definition cameras 5 are symmetrically arranged along the base plate 4. There are four winches 2, which are located at the four corners of the top of the gate slot 1 of the hydropower station. There are four high-definition cameras 5 and three LED lighting strips 9.

[0029] Analysis of the technical principle of this utility model:

[0030] This utility model is a device for inspecting defects in the underwater structure of a hydropower station gate slot: base plate 4; 9×3 50W LED lighting strips; traction rope (thick); winch 2; 5×4 high-definition cameras (covering 4 quadrants with 360° imaging); laser rangefinder 15 (located at the bottom center of base plate 4); battery pack 10 (2 external lithium battery packs); first data cable 7; second data cable 12; remote controller 11; display 8; wireless image transmission device 13; wireless image transmission receiver device 14.

[0031] Component descriptions:

[0032] Substrate 4: It is circular (a circle has the largest area under a given perimeter), therefore, substrate 4 is chosen to be circular. The camera unit, lighting unit, rangefinder, battery and other component units are mounted on substrate 4.

[0033] LED lighting strip 9: LED lighting strip 9 is used to illuminate the dimly lit detection area inside the gate slot 1 surge tank of the hydropower station, providing a good imaging environment for the detection.

[0034] Traction rope: One end is connected to winch 2, and the other end is connected to detection component 3. The winding and unwinding of the traction rope is achieved by winch 2 connected to one end.

[0035] Winch 2: A device for automatically releasing and retracting the traction ropes, which determines the relative position of the detection component 3 inside the gate slot 1 of the hydropower station by changing the length of the four traction ropes.

[0036] High-definition cameras 5: There are a total of 4 cameras, evenly distributed on the substrate 4. The four high-definition cameras 5 take pictures or record videos around the perimeter of the ring wall, and can realize the function of omnidirectional video recording of the internal structure of the gate slot 1 of the hydropower station from the same position.

[0037] Laser rangefinder 15: emits lasers to the wall and the bottom of the doorway to obtain horizontal and vertical distances respectively, thereby calibrating the relative positional relationship of the detection area of ​​substrate 4.

[0038] Battery pack 10: supplies power to the power-consuming units mounted on the base plate.

[0039] First data cable 7: Transmits the image data captured and recorded by the high-definition camera 5 to the monitor 8 in real time via a wired connection.

[0040] Second data line 12: Transmits the control data of the remote controller 11 to the controller 6 in real time via a wired connection.

[0041] Controller 6: Controls the shooting operations of the four high-definition cameras 5 in real time.

[0042] Remote controller 11: Controls four high-definition cameras 5 to take photos or record videos around the inner wall of the door slot.

[0043] Wireless image transmission device 13: transmits the image data captured and recorded by the high-definition camera 5 wirelessly to a long-distance wireless image transmission receiver device 14 in real time.

[0044] Wireless image transmission receiver 14: receives image data transmitted by wireless image transmission device 13 and synchronizes it to display 8.

[0045] Display 8: Displays the image data captured and recorded by the high-definition camera 5. The images captured by the high-definition camera 5 are transmitted to the display 8 via the controller 6 and the first data cable 7, or the wireless image transmission device 13 is responsible for transmitting the image data captured by the high-definition camera 5 wirelessly in real time to the long-distance wireless image transmission receiving device 14 and synchronizing it to the display 8.

[0046] The operation process of this utility model:

[0047] 1. Detection component 3 for hoisting and lowering the gate slot 1 of the hydropower station

[0048] The detection component 3 is hoisted into the gate slot 1 of the hydropower station. During use, it is employed in conjunction with corresponding winches 2, which can be installed at the top of the gate slot 1. By synchronously or individually releasing and retracting the traction ropes using four winches 2, the detection component 3 can move vertically and horizontally within the gate slot 1, enabling a comprehensive video inspection of the entire interior of the gate slot 1. The images are then transmitted to the display 8 via the first data cable 7. When the gate slot is deep and the internal environment is complex, the image data can be transmitted to the wireless image transmission receiver 14 via the wireless image transmission device 13, avoiding the risks of the first data cable 7 and the second data cable 12 becoming entangled or falling off within the gate slot 1.

[0049] 2. Video inspection

[0050] 2.1 Overall Scan:

[0051] The internal structure of the hydropower station gate 1 is scanned according to a predetermined walking route. For example, panoramic videos are taken along the hydropower station gate 1 from top to bottom, from one side of the hydropower station gate 1 to the opposite side, or in segments to record the overall status.

[0052] 2.2 Mark key parts

[0053] Record data by remote shooting, focusing on close-up details of key areas:

[0054] The inspectors used remote controller 11 to take pictures of the breast wall, bottom plate, and water seal of the maintenance door in the inlet gate slot 1. They focused on inspecting the working gate and water blocking of the hydropower station gate slot 1, as well as the tunnel section. They checked for possible defects such as incomplete water seals, erosion, damage, exposed reinforcement, and exposed coarse aggregate in the tunnel section.

[0055] 3. Data processing and identification of outlier areas.

[0056] Record the location of the defect based on the relative position measured by the laser rangefinder 15 (e.g., "X meters from the bottom sill, Y meters from the upstream (downstream) side, and a description of the defect location with accompanying images").

[0057] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0058] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A device for inspecting defects in the underwater structure of a hydroelectric power station gate slot, characterized in that: It includes several winches (2) arranged circumferentially along the top edge of the gate slot (1) of the hydropower station, and the bottom of the traction rope of all winches (2) is connected to a detection component (3).

2. The device for inspecting defects in the underwater structure of a hydropower station gate slot according to claim 1, characterized in that: The detection component (3) has a base plate (4) connected to the traction rope. Several high-definition cameras (5) are arranged along the circumferential edge of the bottom surface of the base plate (4). A controller (6) is provided on the bottom surface of the base plate (4). All the high-definition cameras (5) are connected to the signal input terminal of the controller (6). The signal output terminal of the controller (6) is provided with a display (8) connected to it through a first data line (7). The detection component (3) also includes a light source.

3. The device for inspecting defects in the underwater structure of a hydropower station gate slot according to claim 2, characterized in that: The light source is a plurality of LED lighting strips (9) arranged circumferentially on the bottom edge of the substrate (4). The bottom surface of the substrate (4) is also provided with a battery pack (10) electrically connected to the LED lighting strips (9).

4. The device for inspecting defects in the underwater structure of a hydropower station gate slot according to claim 3, characterized in that: The detection component (3) also includes a remote controller (11), which is connected to the signal input terminal of the controller (6) via a second data line (12).

5. The device for inspecting defects in the underwater structure of a hydropower station gate slot according to claim 4, characterized in that: The bottom surface of the substrate (4) is also provided with a wireless image transmission device (13), and the detection component (3) also includes a wireless image transmission receiver device (14) connected to the wireless image transmission device (13).

6. The device for inspecting defects in the underwater structure of a hydropower station gate slot according to claim 5, characterized in that: A laser rangefinder (15) is provided at the center of the bottom surface of the substrate (4), and the laser rangefinder (15) is connected to the signal terminal of the controller (6).

7. The device for inspecting defects in the underwater structure of a hydropower station gate slot according to claim 6, characterized in that: The high-definition camera (5) is symmetrically arranged along the substrate (4).

8. The device for inspecting defects in the underwater structure of a hydropower station gate slot according to claim 7, characterized in that: There are four winches (2), which are located at the four corners of the top of the gate slot (1) of the hydropower station. There are four high-definition cameras (5) and three LED lighting strips (9).

9. The device for inspecting defects in the underwater structure of a hydropower station gate slot according to claim 8, characterized in that: The battery pack (10) consists of two external lithium battery packs.

10. The device for inspecting defects in the underwater structure of a hydropower station gate slot according to claim 9, characterized in that: The display (8) is equipped with a wireless receiving card that is wirelessly connected to the wireless image transmission receiving device (14).

Images