CN109060542B - System and method for triggering crack image acquisition in basin-type insulator hydrostatic test - Google Patents
System and method for triggering crack image acquisition in basin-type insulator hydrostatic test Download PDFInfo
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- CN109060542B CN109060542B CN201810583562.1A CN201810583562A CN109060542B CN 109060542 B CN109060542 B CN 109060542B CN 201810583562 A CN201810583562 A CN 201810583562A CN 109060542 B CN109060542 B CN 109060542B
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- basin
- type insulator
- speed camera
- trigger signal
- insulator
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- 239000012212 insulator Substances 0.000 title claims abstract description 84
- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000002706 hydrostatic effect Effects 0.000 title claims abstract description 14
- 208000037656 Respiratory Sounds Diseases 0.000 claims 1
- 238000005336 cracking Methods 0.000 description 5
- 229910018503 SF6 Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 2
- 229960000909 sulfur hexafluoride Drugs 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0062—Crack or flaws
- G01N2203/0066—Propagation of crack
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
- G01N2203/0647—Image analysis
Abstract
The invention discloses a system and a method for triggering crack image acquisition in a basin-type insulator hydrostatic test, wherein the system comprises: the device comprises a basin-type insulator hydraulic pressure tool, a hydraulic device, a strain gauge, a support piece and a high-speed motion analysis device; the basin-type insulator hydraulic tool fixes the basin-type insulator through a bolt; the supporting piece supports the basin-type insulator to be vertical to a lens of the high-speed camera; the surface of the basin-type insulator is pasted with the strain gauge, and the strain gauge is connected with the oscilloscope; the high-speed motion analysis device is formed by connecting a controller with the oscilloscope, the high-speed camera and the terminal machine respectively. The method comprises the steps that an oscilloscope sends a first trigger signal after acquiring a deformation signal of a strain gauge; the controller sends a second trigger signal after receiving the first trigger signal; and the high-speed camera starts to acquire images after receiving the second trigger signal and sends the acquired images to the terminal. The method can solve the problem that the high-speed camera cannot synchronously acquire image information because the crack starting time of the surface crack of the basin-type insulator is difficult to determine during the hydraulic test of the basin-type insulator.
Description
Technical Field
The invention relates to the technical field of high-voltage electrical tests, in particular to a system for synchronously triggering dynamic crack propagation process image acquisition in a basin-type insulator hydraulic test.
Background
The inside of a GAS Insulated enclosed switchgear (GAS Insulated SWITCHGEAR, GIS) is filled with sulfur hexafluoride (SF6) GAS with certain pressure as an insulating medium. In the GIS, the basin-type insulator is used as a main insulating part and plays roles of insulating support, air chamber isolation and the like. Under the working condition, the insulation failure of defects such as surface cracks of the basin-type insulator is easily caused by expansion after the basin-type insulator operates for a period of time, and the problem of surface flashover discharge in the GIS can be caused, so that the development of research on crack expansion in a strength test of the basin-type insulator is of great significance.
At present, the hydraulic test of the basin-type insulator only focuses on the damage strength, but the damage strength value of the basin-type insulator cannot reflect the randomness of surface crack development, so that the image data of the basin-type insulator cracking process is accumulated by monitoring the expansion of the surface crack of the basin-type insulator in the hydraulic test process of the basin-type insulator, the core area of the basin-type insulator, which is easy to crack, can be determined easily in the follow-up process, and a more severe test method can be formulated. However, the crack starting time of the surface crack of the basin-type insulator during the hydraulic test of the basin-type insulator is difficult to determine at present, so that a high-speed camera cannot synchronously acquire image information.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a system and a method for triggering crack image acquisition in a basin-type insulator hydrostatic test, so as to solve the problem that a high-speed camera cannot synchronously acquire image information because the crack starting time of a basin-type insulator surface crack is difficult to determine during the basin-type insulator hydrostatic test.
The embodiment of the invention provides a system for triggering crack image acquisition in a basin-type insulator hydrostatic test, which is characterized by comprising the following steps:
the device comprises a basin-type insulator hydraulic tool, a hydraulic device, a strain gauge, a support piece and a high-speed motion analysis device, wherein the high-speed motion analysis device comprises a high-speed camera, a terminal machine, a controller and an oscilloscope;
the basin-type insulator hydraulic tool fixes the basin-type insulator through a bolt; the supporting piece supports the basin-type insulator to be vertical to a lens of the high-speed camera; the surface of the basin-type insulator is coated with the strain gauge, the strain gauge is connected with the oscilloscope, and the controller is respectively in control connection with the oscilloscope, the high-speed camera and the terminal machine.
Preferably, the controller is configured to receive a first trigger signal sent by the oscilloscope; the first trigger signal is sent out after the oscilloscope acquires a deformation signal of the deformation of the strain gauge; sending a second trigger signal to the high-speed camera; the second trigger signal is used for triggering the high-speed camera to start to collect images and sending the collected images to the terminal; and the terminal is used for displaying and analyzing the image information acquired by the high-speed camera.
Preferably, the basin-type insulator hydraulic tool fixes the concave surface or the convex surface of the basin-type insulator through a bolt.
Preferably, the bolt is a flange bolt, the basin-type insulator hydraulic tool comprises a hydraulic tool cover plate, and the hydraulic tool cover plate is fixed to the basin-type insulator through the flange bolt.
Preferably, the strain gauge attached to the surface of the basin-type insulator is distributed in the high stress area region of the basin-type insulator.
Another embodiment of the present invention further provides a method for triggering crack image acquisition in a basin-type insulator hydraulic test, which is characterized in that the system for triggering crack image acquisition in a basin-type insulator hydraulic test in the above embodiments further includes:
the oscilloscope acquires a deformation signal generated by deformation of the strain gauge attached to the surface of the basin-type insulator and then sends a first trigger signal to the controller;
the controller sends a second trigger signal to the high-speed camera after receiving the first trigger signal;
the high-speed camera starts to collect images after receiving the second trigger signal and sends the collected images to the terminal;
and the terminal machine displays and analyzes the image information acquired by the high-speed camera.
Preferably, after sending the second trigger signal to the high-speed camera, the controller further includes: and receiving a first determination signal that the high-speed camera determines to acquire the image.
Preferably, after sending the second trigger signal to the high-speed camera, the controller further includes: and receiving a second determination signal that the terminal determines to receive the image.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an image acquisition system for triggering cracks in a basin-type insulator hydrostatic test according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of a surface structure of a basin-type insulator in an image capturing system according to a first embodiment of the present invention.
Wherein, 1 is a support member; 2, a hydraulic tool cover plate; 3 strain gauge; 4 Flange bolt
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For the convenience of clearly describing the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the words "first", "second", and the like are used to distinguish the same items or similar items with basically the same functions or actions, and those skilled in the art can understand that the words "first", "second", and the like do not limit the quantity and execution order.
Referring to fig. 1, in the present embodiment, the image acquisition system includes the following components: the device comprises a basin-type insulator hydraulic tool, a hydraulic device, a strain gauge, a support piece 1 and a high-speed motion analysis device, wherein the high-speed motion analysis device comprises a high-speed camera, a terminal machine, a controller and an oscilloscope.
The terminal can be any terminal device in the prior art such as a notebook computer, a mobile phone and a tablet personal computer, and a plurality of terminals can be equipped according to the requirement.
The controller may be a separate device with a control chip or control unit, or may be a control unit integrated with the high-speed camera, or may be a control unit integrated with the terminal.
When the strain gauge deforms, deformation signals can be measured or recorded through various sensors, and the strain gauge is not limited to the oscilloscope in the application.
The basin-type insulator hydraulic tool fixes the basin-type insulator through a bolt; the supporting piece supports the basin-type insulator to be vertical to a lens of the high-speed camera; the surface of the basin-type insulator is pasted with the strain gauge, the strain gauge 3 is connected with the oscilloscope, and the controller is respectively in control connection with the oscilloscope, the high-speed camera and the terminal machine.
In the system for acquiring the triggered crack image in the basin-type insulator hydrostatic test in the first embodiment, the controller is configured to receive a first trigger signal sent by an oscilloscope; the first trigger signal is sent out after the oscilloscope acquires a deformation signal of the deformation of the strain gauge; sending a second trigger signal to the high-speed camera; the second trigger signal is used for triggering the high-speed camera to start to collect images and sending the collected images to the terminal; and the terminal is used for displaying and analyzing the image information acquired by the high-speed camera.
After the whole system is fixed, the high-speed motion analysis device is arranged at a safe distance position away from the basin-type insulator hydrostatic test tool. When carrying out conventional hydrostatic test, basin formula insulator hydrostatic test frock can guarantee that the surface of basin formula insulator can all fall into monitoring range, just so can pass through high-speed camera gathers basin formula insulator high stress area crack evolves whole image in whole period. The high speed camera can store hundreds of images in a second, where the number of specific images depends on the resolution of the images.
Preferably, as shown in fig. 2, the strain gauge is attached to one side of the basin-type insulator, which is in contact with air, the strain gauges attached to the surface of the basin-type insulator are distributed in a high stress area region of the basin-type insulator, and one or more strain gauges are arranged according to actual needs.
Preferably, the basin-type insulator hydraulic tool fixes the concave surface or the convex surface of the basin-type insulator through a bolt.
Preferably, the bolt is a flange bolt 4, the basin-type insulator hydraulic tool comprises a hydraulic tool cover plate 2, and the hydraulic tool cover plate is used for fixing the basin-type insulator through the flange bolt.
The oscilloscope acquires a deformation signal of a strain gauge deformed due to cracking of the basin-type insulator, and sends a first trigger signal to the controller, the controller sends a second trigger signal to the high-speed camera after receiving the first trigger signal, and the high-speed camera triggers and acquires image information of the cracking process of the basin-type insulator after receiving a third trigger signal; the high-speed camera is communicated with the terminal machine and transmits the image information to the terminal machine; and the terminal machine displays and analyzes the image information acquired by the high-speed camera.
Another embodiment of the present invention provides a method for triggering crack image acquisition in a basin-type insulator hydrostatic test, including the system for triggering crack image acquisition in a basin-type insulator hydrostatic test in the above embodiments, further including:
the oscilloscope acquires a deformation signal generated by deformation of the strain gauge attached to the surface of the basin-type insulator and then sends a first trigger signal to the controller;
the controller sends a second trigger signal to the high-speed camera after receiving the first trigger signal;
preferably, the controller further receives a first determination signal that the high-speed camera determines to acquire an image.
The high-speed camera starts to collect images after receiving the second trigger signal and sends the collected images to the terminal;
preferably, the controller further receives a second determination signal that the terminal determines that the image is received.
And the terminal machine displays and analyzes the image information acquired by the high-speed camera.
Preferably, the controller sends a control signal to the terminal to control the terminal to start processing the image information.
Due to the fact that the strain gauge is deformed when the basin-type insulator is initially cracked, the deformation signal is obtained through the oscilloscope, the high-speed camera can synchronously acquire image information of the basin-type insulator cracking process, and more evolution process images are acquired within a time period required by the whole cracking process.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a system for trigger crackle image acquisition among basin formula insulator hydrostatic test which characterized in that includes:
the device comprises a basin-type insulator hydraulic tool, a hydraulic device, a strain gauge, a support piece and a high-speed motion analysis device, wherein the high-speed motion analysis device comprises a high-speed camera, a terminal machine, a controller and an oscilloscope;
the basin-type insulator hydraulic tool fixes the basin-type insulator through a bolt; the supporting piece supports the basin-type insulator to be vertical to a lens of the high-speed camera; the surface of the basin-type insulator is coated with the strain gauge, the strain gauge is connected with the oscilloscope, and the controller is respectively in control connection with the oscilloscope, the high-speed camera and the terminal machine;
the controller is used for receiving a first trigger signal sent by the oscilloscope; the first trigger signal is sent out after the oscilloscope acquires a deformation signal of the deformation of the strain gauge; the controller sends a second trigger signal to the high-speed camera; the second trigger signal is used for triggering the high-speed camera to start to collect images and sending the collected images to the terminal;
and the terminal is used for displaying and analyzing the image information acquired by the high-speed camera.
2. The system for triggering crack image acquisition in a basin insulator hydraulic test as claimed in claim 1, wherein the basin insulator hydraulic tool fixes the concave surface or the convex surface of the basin insulator through a bolt.
3. The system for triggering crack image acquisition in a basin-type insulator hydraulic test as claimed in claim 2, wherein the bolt is a flange bolt, the basin-type insulator hydraulic tool comprises a hydraulic tool cover plate, and the basin-type insulator is fixed by the hydraulic tool cover plate through the flange bolt.
4. The system for triggering crack image acquisition in a basin insulator hydraulic test as recited in claim 2, wherein the strain gauge applied to the surface of the basin insulator is distributed in an area of the basin insulator subjected to high stress.
5. An image acquisition method comprising the system for triggering crack image acquisition in the basin insulator hydraulic test as set forth in any one of claims 1 to 4, the method comprising:
the oscilloscope acquires a deformation signal generated by deformation of the strain gauge attached to the surface of the basin-type insulator and then sends a first trigger signal to the controller;
the controller sends a second trigger signal to the high-speed camera after receiving the first trigger signal;
the high-speed camera starts to collect images after receiving the second trigger signal and sends the collected images to the terminal;
and the terminal machine displays and analyzes the image information acquired by the high-speed camera.
6. The image capturing method of claim 5, wherein the controller, after sending the second trigger signal to the high speed camera, further comprises: and receiving a first determination signal that the high-speed camera determines to acquire the image.
7. The image capturing method of claim 6, wherein the controller, after sending the second trigger signal to the high speed camera, further comprises: and receiving a second determination signal that the terminal determines to receive the image.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810583562.1A CN109060542B (en) | 2018-06-07 | 2018-06-07 | System and method for triggering crack image acquisition in basin-type insulator hydrostatic test |
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| CN201810583562.1A CN109060542B (en) | 2018-06-07 | 2018-06-07 | System and method for triggering crack image acquisition in basin-type insulator hydrostatic test |
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| CN109060542B true CN109060542B (en) | 2021-05-04 |
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| CN112345898A (en) * | 2020-11-19 | 2021-02-09 | 西安西电变压器有限责任公司 | Breakdown process self-triggering observation system containing bubble insulating oil |
| CN115950765B (en) * | 2023-03-10 | 2023-05-26 | 国网山西省电力公司电力科学研究院 | System and method for detecting shear stress intensity of epoxy part of GIS basin-type insulator |
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| KR20140028647A (en) * | 2012-08-30 | 2014-03-10 | 현대제철 주식회사 | Apparatus for monitoring fatigue crack |
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