A detection device for detecting a strain clamp of a multi-split conductor of a UAV-mounted CR

Abstract

A kind of detection device of carrying unmanned aerial vehicle CR detection multi-split conductor strain clamp, including chain, IP imaging plate cassette, the IP imaging plate cassette is used to install IP imaging plate, lead plate, intensifying screen, the fixed knob is equipped on the IP imaging plate cassette;The chain is made of several chain links, and spring hook is equipped at both ends of the chain;The fixed knob is used to fixedly connect chain 1 with IP imaging plate cassette.The present application can realize the detection of all multi-split conductor strain clamp at one time by only one piece of cloth, exposure, collection and other processes, solve the problem of missed detection in unmanned aerial vehicle detection of multi-split conductor strain clamp, improve the detection efficiency, solve personal radiation protection and reduce the danger of high-altitude operation, effectively improve the defect detection rate of strain clamp, and ensure the safety of line.

Description

Technical Field

[0001] This invention relates to the field of power transmission line technology, and in particular to a testing device for tension clamps of multi-split conductors equipped with UAV CR detection. Background Technology

[0002] In recent years, my country's ultra-high voltage (UHV) and extra-high voltage (EHV) technologies have developed rapidly. As the most important equipment in the power grid, the safety of transmission lines has received increasing attention, especially the tension clamps widely used in UHV and EHV overhead transmission lines. The quality of their crimping is crucial to the safe operation of the entire line. During the initial installation of transmission lines, some tension clamps need to be crimped at high altitudes, which is difficult and can easily lead to quality problems that are difficult to detect macroscopically. Once the tension clamps are crimped, they are generally not removable. If improper operation or failure to meet relevant standards occurs during the crimping process, accidents can easily occur.

[0003] Currently, in China's power transmission line projects, the inspection of tension clamps for multi-branch conductors is mostly done manually by climbing towers for visual inspection and X-ray testing. This is time-consuming, labor-intensive, inefficient, and carries significant risks associated with working at heights. Therefore, the technology of using drones for X-ray inspection of tension clamps is imperative. This would improve inspection efficiency, solve the problem of personal radiation protection, and reduce the dangers of working at heights. Currently, the technology for drone-based X-ray inspection of tension clamps in China mainly relies on DR imaging. While this can address the issue of drones operating at heights for tension clamps, it has not yet been widely adopted. The main reason is that, during drone-based X-ray inspection of multi-branch conductors in power transmission lines, the limitations of existing drone DR inspection equipment mean that only a portion of the conductors in each phase can be inspected. Due to the spacing between conductors, the drone's X-ray inspection device cannot be fixed or suspended, making it impossible to inspect the crimping quality of the tension clamps, and potentially missing serious defects. Summary of the Invention

[0004] This invention addresses the shortcomings of existing devices and technologies by providing a multi-split conductor tension clamp inspection device equipped with a drone-based CR (Crane Detection) system. This invention utilizes a drone-based CR inspection device to perform simultaneous inspection of all tension clamps for a single-phase multi-split conductor, solving the problem of missed detections during drone-based inspection of multi-split conductor tension clamps. This effectively improves the defect detection rate of tension clamps and ensures line safety.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0006] A detection device for detecting tension clamps of multi-split conductors using CR (Computer Radiography) with a drone includes a chain and an IP imaging plate box. The IP imaging plate box is used to install an IP imaging plate, a lead plate, and an intensifying screen. The IP imaging plate box is equipped with a fixing knob. The chain consists of several chain links, and its two ends are equipped with spring hooks. The fixing knob is used to fix the chain to the IP imaging plate box.

[0007] The aforementioned IP imaging board cassette is a square box made of opaque, rigid, and lightweight material.

[0008] The aforementioned chain links are equipped with lifting lugs.

[0009] Working principle of the invention

[0010] The IP imaging board and the intensifying screen are placed inside the IP imaging board dark box to collect information on defects in the conductor tension clamp.

[0011] Determine the number of conductor tension clamps and adjust the chain length according to the line voltage level;

[0012] Using a drone, one end of the device is fixed to a multi-branched conductor with a spring hook, and the other end is fixed to another conductor of the multi-branched conductor after the drone circles around it once. The two spring hooks are not fixed to the same conductor.

[0013] Using a drone, a portable circumferential X-ray machine is delivered above the multi-splitting conductor. The drone's flight altitude is adjusted according to the conductor spacing so that the head of the portable circumferential X-ray machine is at the center of the multi-splitting conductor cross-section and is geometrically perpendicular to each IP imaging plate cassette.

[0014] Control the portable circumferential X-ray machine to perform exposure operations, and collect the device via drone after the exposure is completed;

[0015] The CR laser scanner reads the information in the IP imaging plate to obtain the CR inspection image of the tension clamp.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] This invention utilizes a drone-mounted CR inspection device. Compared to drone-mounted DR imaging inspection devices, it only requires one process—including image placement, exposure, and data acquisition—to perform a single inspection of all tension clamps for multi-phase conductors. This solves the problem of missed detections that occur when using drones to inspect tension clamps for multi-phase conductors. It improves inspection efficiency while also addressing the need for personal radiation protection and reducing the dangers of working at heights. It effectively increases the defect detection rate of tension clamps, ensuring line safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 for Figure 2 Top view;

[0020] Figure 3 This is an assembly diagram of the tension clamp used in the present invention for testing tension clamps;

[0021] Figure 4 This is a schematic diagram of the IP imaging plate dark box in this invention;

[0022] In the diagram: 1-IP imaging board cassette; 2-Chain; 3-Fixing knob; 4-Spring hook; 5-Lifting lug; 6-Snap fastener; 7-Wire tension clamp. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0024] like Figure 1-4 As shown, a detection device for detecting tension clamps of multi-split conductors using CR detection with a drone includes a chain 1 and an IP imaging plate box 2. The IP imaging plate box 2 is used to install the IP imaging plate, lead plate, and intensifying screen. The IP imaging plate box 2 is equipped with a fixing knob 3. The chain 1 is composed of several chain links, and its two ends are equipped with spring hooks 4. The fixing knob 3 is used to fix the chain 1 to the IP imaging plate box 2.

[0025] The IP imaging board dark box 2 is a square box made of opaque, rigid, and lightweight material.

[0026] The chain link is equipped with a lifting lug 6.

[0027] The IP imaging plate cassette 2 is used to hold the IP imaging plate, lead plate, and intensifying screen, and to fix the IP plate tightly to the conductor tension clamp for X-ray exposure;

[0028] The IP imaging board cassette 2 is equipped with a buckle 6 to enable the opening and closing of the IP imaging board cassette 2. The contact surface between the IP imaging board cassette 2 and the wire clamp is provided with a groove to ensure good contact and locking between the IP imaging board cassette 2 and the wire clamp.

[0029] To accommodate multi-split conductors of different voltage levels, the length of chain 1 can be adjusted according to actual usage. The length adjustment can be achieved simply by increasing or decreasing the number of chain sections.

[0030] One side of the chain link has a concave surface with the same diameter as the fixing knob 3 on the IP imaging board cassette 2, which facilitates a more secure locking of the chain 1 and the fixing knob 3.

[0031] The chain 1 is equipped with lifting lugs 6, which facilitates the lifting of the device by a drone. Example

[0032] Place the IP imaging board, intensifying screen, or lead plate into the IP imaging board dark box 2 as required, and lock the buckle 6.

[0033] Based on the line voltage level, determine the number of tension clamps for a single-phase conductor, the equivalent diameter of the multi-split conductor, and adjust the length of chain 1.

[0034] Arrange the IP imaging board dark box 2 at equal intervals on the chain 1, and adjust the fixing knob 3 on the IP imaging board 2 to fix the IP imaging board dark box 2 to the chain 1.

[0035] The drone is remotely controlled to lift the entire testing device through the lug 5 at one end of the chain 1, and to the designated position above the conductor tension clamp 7. The drone is then adjusted to fix the spring hook 4 at one end of the chain 1 to a conductor. The drone is then remotely controlled to wrap the entire device around the conductor tension clamp 7 once through the lug 6 at the other end of the chain 1 and fix it to another conductor. The spring hooks 4 at both ends are fixed to two adjacent conductors respectively to avoid fixing them to a single conductor.

[0036] The wires overlap with the grooves in the IP board recess 2.

[0037] Using a remotely controlled drone, the portable circumferential X-ray machine is positioned above the multi-splitter conductor. Through video observation, the drone's flight altitude is adjusted to position the machine's head at the center of the multi-splitter conductor's cross-section. It is crucial that the X-ray machine's exposure window is geometrically perpendicular to each IP imaging plate cassette.

[0038] The portable circumferential X-ray machine is controlled for exposure operations, and the device is retrieved via drone after the exposure is completed.

[0039] The CR laser scanner reads the information in the IP imaging plate to obtain the CR inspection image of the tension clamp.

[0040] The device and testing method of this invention are applicable to the testing of tension clamps for multi-split conductors at different voltage levels. The testing equipment is simple and lightweight, and the testing method is easy to implement, providing another safe and reliable solution for conducting UAV-based X-ray testing of tension clamps for multi-split conductors in power grid lines.

[0041] In this embodiment, the detection device for the multi-split conductor tension clamp equipped with a drone for CR inspection requires a drone with hovering and video capabilities as the carrier device. The drone must be a rotary-wing drone with a payload capacity greater than 15 kg and a flight time greater than 30 minutes.

[0042] The objectives, technical solutions, and advantages of this invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the structure and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A detection device for detecting tension clamps of multi-split conductors using CR detection with a drone, comprising a chain (1) and an IP imaging plate cassette (2), characterized in that, The IP imaging plate dark box (2) is used to install the IP imaging plate, lead plate, and intensifying screen. The IP imaging plate dark box (2) is provided with a fixing knob (3). The chain (1) is composed of several chain links, and spring hooks (4) are provided at both ends. The fixing knob (3) is used to fix the chain (1) to the IP imaging plate dark box (2).

2. The detection device for detecting multi-split conductor tension clamps using a drone-mounted CR system according to claim 1, characterized in that, The IP imaging board cassette (2) is a square box made of opaque, rigid, and lightweight material.

3. The detection device for detecting multi-split conductor tension clamps using a drone-mounted CR system according to claim 1, characterized in that, The chain link is provided with a lifting lug (5).

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