CN106872584B - Ultrasonic coupling device and ultrasonic coupling method for ultrasonic detection of composite insulator - Google Patents
Ultrasonic coupling device and ultrasonic coupling method for ultrasonic detection of composite insulator Download PDFInfo
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- CN106872584B CN106872584B CN201710022222.7A CN201710022222A CN106872584B CN 106872584 B CN106872584 B CN 106872584B CN 201710022222 A CN201710022222 A CN 201710022222A CN 106872584 B CN106872584 B CN 106872584B
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- 238000010168 coupling process Methods 0.000 title claims abstract description 40
- 239000012212 insulator Substances 0.000 title claims abstract description 40
- 239000002131 composite material Substances 0.000 title claims abstract description 36
- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 230000008878 coupling Effects 0.000 title claims abstract description 31
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000000523 sample Substances 0.000 claims abstract description 41
- 239000012528 membrane Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 230000007547 defect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
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- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses an ultrasonic coupling device for ultrasonic detection of a composite insulator, which comprises a box body, a flexible water-stop film, a water nozzle switch joint and an ultrasonic probe, wherein a box opening of the box body is fixedly connected with the edge of the flexible water-stop film, the flexible water-stop film is used for waterproof sealing of the box opening of the box body, an ultrasonic probe mounting opening is formed in the bottom surface of the box body, the ultrasonic probe is mounted on the ultrasonic probe mounting opening, a shell of the ultrasonic probe is connected with the ultrasonic probe mounting opening in a sealing manner, the detection end surface of the ultrasonic probe faces the flexible water-stop film, and the water nozzle switch joint is arranged on the box body. The invention can realize omnidirectional on-site detection of the composite insulator on the high-voltage transmission line in operation and provide technical support for the safe operation of the power system.
Description
Technical Field
The invention relates to the technical field of insulator detection, in particular to an ultrasonic coupling device and an ultrasonic coupling method for ultrasonic detection of a composite insulator.
Technical Field
The composite insulator has the advantages of light weight, high tensile strength, strong pollution resistance and the like, and is widely applied to a high-voltage power transmission system. Due to the influence of a manufacturing process, service life and an operating environment, the accident of the power transmission line caused by the brittle failure of the core rod caused by the internal defects of the composite insulator sometimes occurs. In order to ensure the safe operation of the transmission line, how to effectively detect the internal defects of the composite insulator, particularly on-site live-line detection, becomes a very interesting problem for the electric power part.
The ultrasonic detection method mainly utilizes the influence of the composite material and the defects thereof on the propagation of ultrasonic waves to realize the detection of the internal defects of the detected material, and has the advantages of high sensitivity, strong penetrability, accurate defect positioning, high detection speed, low cost and the like. The ultrasonic method for detecting the defects of the insulator is widely accepted in the field of electric power, but because the attenuation of sound waves emitted by an ultrasonic probe in the air is large, the insulator needs to be taken off from the site and put into a water tank in the ultrasonic coupling of the existing composite insulator, the sound field energy can be more easily fed into the insulator through a water coupling medium, and the composite insulator cannot be subjected to live detection by the ultrasonic method on the site. In addition, the ultrasonic water spray coupling method needs a large amount of water and a water spray control device, and the requirement on the insulating property of water in a high-voltage environment is high, so that the instrument is heavy and is difficult to use on site.
Disclosure of Invention
The invention aims to solve the technical problems and provides an ultrasonic coupling device and an ultrasonic coupling method for ultrasonic detection of a composite insulator.
In order to achieve the purpose, the invention designs an ultrasonic coupling device for ultrasonic detection of a composite insulator, which is characterized in that: the water tap switch connector comprises a box body, a flexible water-stop film, a water tap switch connector and an ultrasonic probe, wherein a box opening of the box body is fixedly connected with the edge of the flexible water-stop film, the flexible water-stop film is used for waterproof sealing of the box opening of the box body, an ultrasonic probe mounting opening is formed in the bottom surface of the box body, the ultrasonic probe is mounted on the ultrasonic probe mounting opening, a shell of the ultrasonic probe is connected with the ultrasonic probe mounting opening in a sealing mode, and the detection end face of the ultrasonic probe is provided with the water tap switch connector towards the flexible water-stop.
An ultrasonic coupling method using the device comprises the following steps:
step 1: water is injected into the box body through the water nozzle switch joint, the flexible water-stop film is bulged by water pressure, and then the water nozzle switch joint is sealed, so that the ultrasonic coupling device is completely waterproof and sealed;
step 2: and pressing the flexible water-stop film on the sheath of the composite insulator to be detected, and enabling the flexible water-stop film to be tightly attached to the sheath of the composite insulator to be detected by utilizing the flexibility of the flexible water-stop film, the flowability of water and the water pressure effect, so as to realize ultrasonic coupling.
According to the invention, the flexible membrane is expanded and swollen by the water pressure in the box body and the flexible waterproof membrane, and the flexibility of the flexible membrane, the fluidity of water and the water pressure effect are utilized, so that the flexible waterproof membrane is in good contact with the composite insulator, the ultrasonic coupling is realized, and the flexibility is good; the coupling device is a sealing device, can be placed at any angle, can realize omnidirectional field detection on the composite insulator on the high-voltage transmission line in operation, and provides technical support for the safe operation of a power system.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a use state of the present invention;
FIG. 3 is a rear perspective view of the case of the present invention;
fig. 4 is a front perspective view of the case of the present invention.
The ultrasonic testing device comprises a box body 1, a box opening 1.1, an ultrasonic probe mounting opening 1.2, a detector mounting counter bore 1.3, an arc-shaped edge 1.4, a water nozzle through hole 1.5, water 2, a flexible water-stop film 3, a water nozzle switch joint 4, an ultrasonic probe 5, a sheath 6 and a composite insulator 7 to be tested.
Detailed Description
The invention is described in further detail below with reference to the following figures and examples:
an ultrasonic coupling device for ultrasonic detection of a composite insulator, as shown in fig. 1-4, comprises a box body 1, a flexible water-stop film 3, a water nozzle switch connector 4 and an ultrasonic probe 5, wherein a box opening 1.1 of the box body 1 is fixedly (adhesively) connected with the edge of the flexible water-stop film 3, the flexible water-stop film 3 is used for waterproof sealing of the box opening 1.1 of the box body 1, an ultrasonic probe mounting opening 1.2 is formed in the bottom surface of the box body 1, the ultrasonic probe 5 is mounted on the ultrasonic probe mounting opening 1.2, a shell of the ultrasonic probe 5 is hermetically connected with the ultrasonic probe mounting opening 1.2 (sealed waterproof mounting), the detection end surface of the ultrasonic probe 5 faces the flexible water-stop film 3, and the water nozzle switch connector 4 is arranged on the box body. The detection end of the ultrasonic probe 5 realizes ultrasonic coupling through the water 2 and the flexible water-stop film 3 in the coupling device.
In the above technical scheme, the water nozzle switch joint 4 is arranged at the bottom of the box body 1 (the bottom of the box body 1 is provided with a water nozzle through hole 1.5, and the water nozzle switch joint 4 is arranged on the water nozzle through hole 1.5). The design can reduce the interference of the water nozzle switch joint 4 on other equipment during the ultrasonic detection of the composite insulator.
In the above technical solution, the detection end of the ultrasonic probe 5 is located at the axis of the box body 1. The design can improve the ultrasonic detection accuracy of the detection end.
In the technical scheme, the bottom surface of the box body 1 around the ultrasonic probe mounting port 1.2 is provided with the detector mounting counter bore 1.3, and the shell of the ultrasonic probe 5 is mounted on the ultrasonic probe mounting port 1.2 through the bolt and the detector mounting counter bore 1.3. The connection form is stable and reliable, and the sealing performance can be well guaranteed.
In the above technical scheme, the two long sides of the box opening 1.1 are arc sides 1.4 with equal radians. The structure can be well matched with the appearance of the sheath 6 of the composite insulator 7 to be detected.
Because the coupling device is a sealing device, the coupling device can be placed at any angle to realize coupling at any angle, and the coupling device is vertically placed at 90 degrees in fig. 2.
An ultrasonic coupling method using the device comprises the following steps:
step 1: injecting water 2 into the box body 1 through the water nozzle switch joint 4, wherein the flexible water-stop film 3 is swelled by water pressure, and then the water nozzle switch joint 4 is sealed to ensure that the ultrasonic coupling device is completely waterproof and sealed;
step 2: the flexible water-stop film 3 is pressed on the sheath 6 of the composite insulator 7 to be detected, and the flexible water-stop film 3 is tightly attached to the sheath 6 of the composite insulator 7 to be detected by utilizing the flexibility of the flexible water-stop film 3, the water fluidity and the water pressure effect, so that the ultrasonic coupling is realized.
By using the coupling device and the coupling mode, the composite insulator can be subjected to uninterrupted ultrasonic detection, the composite insulator does not need to be taken down during detection, and sound field energy is fed into the insulator by using the flexible water-stop film 3 and the water coupling medium in the box body 1, so that the composite insulator ultrasonic detection with high sensitivity, strong penetrability and accurate defect positioning is realized.
The ultrasonic coupling device for ultrasonic detection of the composite insulator can be used for common ultrasonic detection of the composite insulator, can also be used for phased array ultrasonic detection of the composite insulator, and is used for realizing omnidirectional field detection of the composite insulator on a running high-voltage transmission line, detecting the internal defects of the composite insulator, evaluating the performance state of the running composite insulator and providing technical support for safe running of a power system.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (1)
1. An ultrasonic coupling method of an ultrasonic coupling device for ultrasonic detection of a composite insulator is disclosed, the ultrasonic coupling device for ultrasonic detection of the composite insulator comprises a box body (1), a flexible water-stop membrane (3), a water nozzle switch joint (4) and an ultrasonic probe (5), the box opening (1.1) of the box body (1) is fixedly connected with the edge of the flexible water-stop film (3), the box opening (1.1) of the box body (1) is sealed by the flexible water-stop film (3) in a waterproof way, the bottom surface of the box body (1) is provided with an ultrasonic probe mounting opening (1.2), the ultrasonic probe (5) is arranged on the ultrasonic probe mounting port (1.2), a shell of the ultrasonic probe (5) is hermetically connected with the ultrasonic probe mounting port (1.2), the detection end face of the ultrasonic probe (5) faces the flexible water-stop film (3), a water nozzle switch joint (4) is arranged on the box body (1), and the water nozzle switch joint (4) is arranged at the bottom of the box body (1); the detection end of the ultrasonic probe (5) is positioned at the axis of the box body (1);
the detection end of the ultrasonic probe (5) realizes ultrasonic coupling through the water (2) and the flexible water-stop film (3) in the coupling device;
a detector mounting counter bore (1.3) is formed in the bottom surface of the box body (1) around the ultrasonic probe mounting opening (1.2), and a shell of the ultrasonic probe (5) is mounted on the ultrasonic probe mounting opening (1.2) through a bolt and the detector mounting counter bore (1.3);
two long sides of the box opening (1.1) are arc sides (1.4) with equal radians;
the ultrasonic coupling method is characterized by comprising the following steps:
step 1: injecting water (2) into the box body (1) through a water nozzle switch joint (4), wherein the flexible water-stop film (3) is swelled by water pressure, and then the water nozzle switch joint (4) is sealed to ensure that the ultrasonic coupling device is completely waterproof and sealed;
step 2: the flexible water-stop film (3) is pressed on a sheath (6) of the composite insulator (7) to be detected, and the flexible water-stop film (3) is tightly attached to the sheath (6) of the composite insulator (7) to be detected by utilizing the flexibility of the flexible water-stop film (3), the fluidity of water and the action of water pressure, so that ultrasonic coupling is realized.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710022222.7A CN106872584B (en) | 2017-01-12 | 2017-01-12 | Ultrasonic coupling device and ultrasonic coupling method for ultrasonic detection of composite insulator |
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| CN201710022222.7A CN106872584B (en) | 2017-01-12 | 2017-01-12 | Ultrasonic coupling device and ultrasonic coupling method for ultrasonic detection of composite insulator |
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| CN106872584A CN106872584A (en) | 2017-06-20 |
| CN106872584B true CN106872584B (en) | 2020-02-07 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108254445A (en) * | 2018-01-05 | 2018-07-06 | 国家电网公司 | For the supersonic array device and imaging method of composite insulator defects detection |
| CN108593780B (en) * | 2018-05-08 | 2021-04-20 | 南昌市建筑科学研究所（南昌市建筑工程质量检测中心） | Soft film ultrasonic phased array probe for detecting T-shaped welding seam of corrugated steel web |
| CN109799289B (en) * | 2019-03-07 | 2022-04-01 | 中钢集团西安重机有限公司 | Flaw detection device suitable for large-area or batch steel plate flaw detection |
| CN111426919A (en) * | 2020-04-08 | 2020-07-17 | 国网山西省电力公司电力科学研究院 | Basin-type insulator detection device based on laser-induced ultrasound |
| CN115184180B (en) * | 2022-09-09 | 2022-11-15 | 安格诺尔(江苏)智能电气有限公司 | Immersion water thermal cycle test device for 220kV cable intermediate joint |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2343975Y (en) * | 1998-09-23 | 1999-10-20 | 张伟民 | Cervical B-ultrasonic water bag |
| CN2373048Y (en) * | 1999-02-09 | 2000-04-12 | 王修铭 | B-ultrasonic-wave probe water pocket |
| CN102621234B (en) * | 2012-03-02 | 2014-08-06 | 中国航空工业集团公司北京航空制造工程研究所 | Ultrasonic probe for detecting R area of composite materials |
| CN202497168U (en) * | 2012-04-24 | 2012-10-24 | 周宇峰 | Ultrasonic coupling device |
| CN104815399B (en) * | 2015-04-03 | 2018-04-17 | 西安交通大学 | High-strength focusing ultrasonic therapy guiding and control system and method based on six shaft mechanical arms |
| CN205041478U (en) * | 2015-09-23 | 2016-02-24 | 江苏汉美科技有限公司 | Water cushion for ultrasonic therapy |
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