CN-115752309-B - Ultrasonic detection method and system for strain clamp joint and electronic equipment

CN115752309BCN 115752309 BCN115752309 BCN 115752309BCN-115752309-B

Abstract

The application discloses an ultrasonic detection method and system for a strain clamp joint and electronic equipment, wherein the method comprises the following steps of S1 collecting wall thickness data of the strain clamp through ultrasonic data of a phased array detector, S2 removing a pressure interval with unqualified butt edge after the strain clamp is crimped, S3 arranging the pressure interval in the qualified pressure interval, obtaining the wall thickness interval of the strain clamp through ultrasonic detection, and S4 judging whether the strain clamp is crimped qualified or not according to the collected wall thickness data of the strain clamp and the obtained wall thickness interval. In the technical scheme, the average value of the wall thickness obtained by detection under the condition of qualified pressure based on the steps such as ultrasonic phased array equipment detection is larger than the wall thickness interval obtained by arrangement, and the judgment of qualification can be made. Compared with the prior art, the technical scheme provided by the application has higher detection result accuracy and higher detection efficiency.

Inventors

LI JUNHUA
PENG JIANING
BIAN MEIHUA
ZHANG XINGSEN
LU ZHANQIANG
LIU GUICHAN

Assignees

广西电网有限责任公司电力科学研究院

Dates

Publication Date: 20260512
Application Date: 20221122

Claims (6)

1. The ultrasonic detection method for the strain clamp joint is characterized by comprising the following steps of: s1, acquiring wall thickness data of a strain clamp through ultrasonic data of a phased array detector; s2, removing a pressure interval with unqualified butt edge after the strain clamp is crimped; s3, arranging the strain clamp in a qualified pressure interval, and ultrasonically detecting the strain clamp to obtain a wall thickness interval; s4, judging whether the tension clamp is qualified in compression joint or not according to the acquired tension clamp wall thickness data and the obtained wall thickness interval, and detecting that the obtained wall thickness average value is larger than the obtained wall thickness interval in arrangement under the condition that the pressure is qualified, so that the tension clamp is qualified; Setting a 0.5-1 mm fuzzy interval, and if the wall thickness of the strain clamp is detected to be in the fuzzy interval, re-detecting to judge whether the strain clamp is qualified in crimping; The step of acquiring the wall thickness data of the strain clamp through ultrasonic data of a phased array detector comprises the steps of detecting and measuring the wall thickness data of the crimping position of a steel core and a steel anchor by using ultrasonic phased array equipment; The step of acquiring wall thickness data of the strain clamp through ultrasonic data of a phased array detector comprises the steps of detecting and measuring the wall thickness data of a crimping position of a notch and an aluminum sleeve by using ultrasonic phased array equipment; the step of acquiring the wall thickness data of the strain clamp through ultrasonic data of the phased array detector comprises the steps of detecting the crimping position of the aluminum stranded wire and the aluminum sleeve by using ultrasonic phased array equipment and measuring the wall thickness data at the crimping position.
2. The ultrasonic testing method for the strain clamp joint according to any one of claim 1, wherein the ultrasonic data acquisition specifically adopts phascan phased array detector, L55-20L64-0.4 5 Detection probes, SL55-N0L 15mm wedge blocks and CRS scanner heads.
3. The ultrasonic testing method for the strain clamp joint according to claim 1, wherein the phased array equipment is used for testing immediately after the steel core and the steel anchor position are in crimping, the crimp section is in a regular hexagon shape, and data acquisition is carried out on six faces so as to realize that the probe can sweep all crimping positions at uniform speed.
4. The ultrasonic testing method of strain clamp joints according to claim 2, wherein a phased array ultrasonic transducer is used to achieve high test resolution by emitting a focused beam of sound to concentrate the energy at the test point.
5. The ultrasonic detection system for the strain clamp joint is characterized by being used for assisting in executing the ultrasonic detection method for the strain clamp joint according to any one of claims 1 to 4, and comprises a monitor, a scanner, a probe, a hardware system, a software system and a power control network, wherein the hardware system and the software system are arranged in the monitor, the hardware system comprises a phased array transmitting module and a conventional transmitting module, the phased array transmitting module comprises an FPGA and a CPU, the FPGA is externally hung with a piece of 256MDDR3, the CPU is externally hung with a piece of memory, the software system comprises an open source linux kernel, a GTK interface and a GCC, the power control network comprises an FPG control module and a singlechip control module, the FPG control module comprises TOFD high-low voltage control and PA high-low voltage control, and the singlechip control module controls a power switch, core board power control and peripheral device power supply control.
6. An electronic device comprising at least one processor and a memory, the memory storing computer-executable instructions, the at least one processor executing the computer-executable instructions stored in the memory, causing the at least one processor to perform the strain clamp joint ultrasonic testing method of any one of claims 1 to 4.

Description

Ultrasonic detection method and system for strain clamp joint and electronic equipment Technical Field The application relates to the technical field of ultrasonic detection, in particular to an ultrasonic detection method for a strain clamp joint, and further relates to an ultrasonic detection system and electronic equipment for the strain clamp joint. Background The strain clamp crimping connector is a crimping electric power fitting used for overhead transmission lines, is widely used in power grid systems, is used for crimping a steel core and an aluminum stranded wire together through a crimping machine, and is used for crimping the steel core aluminum stranded wire and an aluminum sleeve together. The strain clamp connector with quality problems is used on a transmission line, potential safety hazards can be caused to the line, the conventional test and analysis means of the strain clamp can only judge the crimping quality of the strain clamp from data obtained by measuring the outer diameter, certain limitations exist, and the accuracy of the quality detection method of the strain clamp connector in the prior art is required to be improved. Therefore, how to provide an ultrasonic detection method for a strain clamp joint, which has higher accuracy of detection results and higher detection efficiency, has become a technical problem to be solved by those skilled in the art. Disclosure of Invention In order to solve the technical problems, the application provides an ultrasonic detection method and system for a strain clamp joint and electronic equipment, which have higher detection result accuracy and higher detection efficiency. The technical scheme provided by the application is as follows: The application provides an ultrasonic detection method for a strain clamp joint, which comprises the following steps of S1 collecting wall thickness data of the strain clamp through ultrasonic data of a phased array detector, S2 removing a pressure interval with unqualified butt edge after the strain clamp is crimped, S3 arranging the pressure interval in a qualified pressure interval, obtaining the wall thickness interval of the strain clamp through ultrasonic detection, and S4 judging whether the strain clamp is crimped qualified or not according to the measured wall thickness data of the strain clamp and the obtained wall thickness interval. Further, in a preferred mode of the invention, the method further comprises the step of setting a fuzzy interval of 0.5-1 mm, and if the wall thickness of the strain clamp is detected to be in the fuzzy interval, re-detecting and judging whether the strain clamp is qualified in crimping. Further, in a preferred mode of the invention, the step of acquiring strain clamp wall thickness data through ultrasonic data of a phased array detector comprises detecting the wall thickness of a position where a steel core is in compression joint with a steel anchor by using ultrasonic phased array equipment. Further, in a preferred form of the invention, the step of acquiring strain clamp wall thickness data via phased array detector ultrasound data includes detecting the wall thickness of the notch and aluminum sleeve crimp location using an ultrasound phased array device. Further, in a preferred mode of the invention, the step of acquiring strain clamp wall thickness data through ultrasonic data of a phased array detector comprises detecting the crimping position of an aluminum stranded wire and an aluminum sleeve by using ultrasonic phased array equipment, and measuring the wall thickness of the crimping position. Further, in a preferred form of the invention, L55-20L 64-0.4x5 detection probes, SL55-N0L 15mm wedges, CRS scanner heads. Further, in a preferred mode of the invention, after the steel core and the steel anchor position are in crimping, the phased array equipment is used for detection immediately, the appearance of the crimping section is regular hexagon, and data acquisition is carried out on all six faces so as to realize that the probe uniformly sweeps all crimping positions. Further, in a preferred form of the invention, a phased array ultrasonic transducer is used to achieve high detection resolution by focusing acoustic energy at the detection point by emitting a focused acoustic beam. In addition, the application also provides an ultrasonic detection system for the strain clamp connector, which is used for assisting in executing the ultrasonic detection method for the strain clamp connector, and comprises a monitor, a scanner and a probe, a hardware system, a software system and a power control network, wherein the hardware system and the software system are arranged in the monitor, the hardware system comprises a phased array transmitting module and a conventional transmitting module, the phased array transmitting module comprises an FPGA and a CPU, the FPGA is externally hung with a piece of 256MDDR3, the CPU is externally hung with a piece of memory, the software