CN101839870A - X-ray radiographic digital imaging detection method for power grid GIS (Geographic Information System) equipment - Google Patents
X-ray radiographic digital imaging detection method for power grid GIS (Geographic Information System) equipment Download PDFInfo
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Abstract
The invention relates to a power grid equipment detecting technology, in particular to an X-ray radiographic digital imaging detection method for power grid GIS (Geographic Information System) equipment. The detection method comprises the following steps of: (1) fixing a part needing to be shot; (2) erecting an X-ray apparatus and placing an X-ray sensitization imaging plate; (3) connecting a cable between the X-ray apparatus and a console; (4) connecting a CR (Conditioned Reflex) digital image scanner and a computer by a special data line; (5) setting a shooting parameter of the X-ray apparatus according to the field condition; (6) starting a high-voltage emitting button of the console and carrying out radiographic shooting; (7) reading data to obtain a digital image picture; and (8) processing a shooting result by the computer. An X-ray radiographic digital imaging system of the GIS equipment directly reads data of an IP (Internet Protocol) imaging plate by adopting an advanced CR digital image scanning technology and converts the sensitizing image information on the IP imaging plate into a digital image signal; and compared with the traditional ray film needing a darkroom and the step of developing, the working efficiency is greatly improved.
Description
Technical field
The present invention relates to a kind of grid equipment detection technique, specifically relate to a kind of X-ray radiographic digital imaging detection method for power grid GIS (Geographic Information System) equipment.
Background technology
Continuous development and expansion along with electrical network, GIS equipment is stable with it, compact conformation, be subjected to characteristics such as external interference is little more and more widely apply to power industry, become the developing direction of current power industry transformer station electrical equipment, the primary element of GIS equipment comprises isolating switch, disconnector, grounding switch, voltage and current mutual inductor, lightning arrester, sleeve pipe (cable termination), bus etc., wherein isolating switch is being born the effect of cutting off and connecting big load electric energy, be the core parts of GIS equipment, form by arc-chutes and operating mechanism; Disconnector is to be used for cut-offfing little electric current, prevents to produce too high superpotential, and flashover over the ground takes place, and is made of the conductor of insulator shell and different geometries; Bus is to be used for connecting each wiring at interval, makes it into as a whole.
In GIS equipment, isolating switch, disconnector, the bus connecting portion is the position occurred frequently of fault normally, GIS establishes portion's failure rate by statistics, short-circuiting device accounts for 43.4%, disconnector accounts for 17.9%, bus accounts for 5.5%, because it is metal enclosed that GIS equipment adopts, the sulfur hexafluoride gas-insulating technology, repair based on condition of component to GIS equipment lacks effective means always all the time, in case inner structure takes place unusual, as contact part scaling loss, the conducting rod distortion, assemble not in place, during faults such as screw is loosening, be difficult to accurately judge failure cause by the conventional test means, GIS equipment inner structure complexity in addition, the dismounting difficulty, for the localization of faults need be done a large amount of tests repeatedly, come infer fault reason and trouble spot by analysis to test data, bring very big difficulty to maintenance, its fault was comparatively serious when research technique noted abnormalities usually, even contact burning, switch, serious accidents such as disconnecting link is badly damaged, and employing X ray transillumination digital imaging technology, can easily send out the position at fault, as arc-extinguishing chamber of circuit breaker, the isolation switch contact position, the transillumination imaging is carried out at positions such as bus connection, observe the situation of change of inner structure, loosening as screw, fingertip part scaling loss, spring comes off, it is not in place to close a floodgate etc., and then accurately grasp the character of inherent vice, convenient maintenance, can before fault enlarges, its scarce replacing that disappear not handled by X ray transillumination digital imaging technology simultaneously, the equipment that prevents is badly damaged, the generation of massive blackout accident, the safe and reliable operation of guarantee electrical network.
X ray is as a kind of Dynamic Non-Destruction Measurement that can penetrate object and internal structure of body be carried out imaging, industries such as application widely and medical science, aviation, petrochemical industry, railway, be a kind of Dynamic Non-Destruction Measurement of fast imaging, record is not seen in the imaging that this technology is applied to power grid GIS (gas-insulated metal enclosed switchgear) equipment inner structure as yet.
Summary of the invention
The purpose of this invention is to provide a kind of X-ray radiographic digital imaging detection method for power grid GIS (Geographic Information System) equipment that the power grid GIS equipment inner structure detects that is exclusively used in.
A kind of X-ray radiographic digital imaging detection method for power grid GIS (Geographic Information System) equipment of the present invention, be used for X ray transillumination digital imaging system, this system comprises that X ray photosensitive imaging plate, film loader, equipment need take position, X-ray production apparatus, ray emission window, X-ray machine X support, scanner, data line, computer, and described detection method comprises the steps:
1) definite position that needs shooting;
2) X-ray production apparatus sets up firm being placed on the shooting platform of X-ray production apparatus that will be fixed on the X-ray machine X support with putting of X ray photosensitive imaging plate, the position that ray emission window perpendicular alignmnet need be taken, be close to apparatus casing in the back side of the subject direction relative with the ray emission window and place X ray photosensitive imaging plate, ray emission window center and equipment need be taken position, X ray photosensitive imaging plate center point-blank;
3) connect cable between X-ray production apparatus and the control desk, check that control desk and X-ray production apparatus work well;
4) CR digital picture scanner is crossed dedicated data line with the computer expert and be connected, check that data communication is normal;
5) set the X-ray production apparatus acquisition parameters according to field condition, keep the ray focal length between the 500-900mm, electric current is that 90-240 is between second in 2-4mA, transillumination time;
6) acquisition parameters is set and is finished, and opens control desk high pressure firing button, carries out sensitivity of film and takes;
7) sensitivity of film finishes, and closes the high pressure emission, takes off film loader, takes out the X ray photosensitive imaging plate of sensitization, adopts CR digital picture scanner to carry out data read, obtains the digital picture photo;
8) the digital picture input computer employing that obtains is arranged on obtaining with analysis software in the CR digital picture scanner and handles, obtain different observing effects, and finish work such as various measurements, mark, contrast;
9) shooting different parts repeating step 2), 5), 6), 7), 8).
A kind of X-ray radiographic digital imaging detection method for power grid GIS (Geographic Information System) equipment of the present invention has following beneficial effect compared with prior art: power grid GIS equipment X ray digital imaging technology, adopt present state-of-the-art CR imaging technique, mechanism carries out digital imagery to the GIS device interior, this cover checkout equipment is by 300kV high-power portable X-ray machine X, CR digital picture scanner, X ray photosensitive imaging plate, the high-resolution notebook computer, the special image process software, cable connection and other safety protective tools etc., to the isolating switch in the GIS equipment, disconnector, vertical transillumination is carried out at fault positions occurred frequently such as bus connecting portion, by imaging plate sensitization, form GIS equipment inner structure photo, and by CR digital scanning technology, convert the imaging plate bearing member, image to digital picture fast, inner structure is analyzed.The advantage of detection method of the present invention is:
1) adopts X ray that GIS is established portion's inner structure and carry out imaging, broken through traditional GIS device interior defect condition and can only lean on the conventional test data analysis, can't reach the stage of demonstration fault directly perceived.
GIS equipment X ray transillumination digital imaging system, adopt advanced CR digital picture scanning technique, the IP imaging plate is directly carried out data read, bearing member, image information translation on the IP imaging plate is become data image signal, need the darkroom to compare with traditional radiographic film and improved work efficiency greatly with the flushing operation.
2) this system compares with traditional radiography, have the same position few characteristics of number of times that repeat to take pictures, the digital imagery plate of CR has the dynamic range of non-constant width, this makes conditions of exposure that a very big variation range can be arranged, the selection of exposure dose also has bigger freedom, the observable scope of image is bigger, therefore, the number of times that need retake significantly reduces, this point has overcome GIS device structure complexity, on-the-spot ray is taken the difficult problem of the many poor image quality of influence factor, and the selection of each parameter has had bigger nargin when making shooting, has ensured to obtain the resolution chart picture.
3) x-ray imaging technology image definition height; imaging plate is used for the chemical composition of fluorescent powder of memory image and has guaranteed best performance; this material has the absorption efficiency height; the characteristics that reaction time is short and homogeneity is good; thereby guaranteed high definition of image; electron beam treatment protective seam technology makes that the imaging plate surface is more smooth, thereby reduces the granularity noise.
4) Flame Image Process adopts professional software to carry out, can realize functions such as the rotation of image, anti-phase, gray scale and contrast adjustment, dimensional measurement, data mark, can realize the being taken comparing function of part and design drawing, find the situation of change of its structure, as assemble the detection of scaling loss amount, deformation of not in place, arcing contact etc., processing by software makes bearing member, image more directly perceived, with stereoscopic sensation, is convenient to layman's Fault Identification.
5) IP digital imagery plate can be realized reusing; and ligh-induced effect does not take place in imaging plate under conventional light; having solved conventional radiographic film keeps in dark place; need carry out the drawback that handle in the darkroom; the digitalized image plate uses the protection of EBC (electron beam treatment) layer, and EBC is a kind of patented technology that makes organic pre-polymer layer on the phosphor layer harden into highdensity polymer protective layer.This makes imaging plate have extraordinary protective capacities to mechanical wear, and chemical cleaner is had outstanding corrosion resistivity, thereby makes the digital imagery plate have long serviceable life.Radiation dose reduces, and the scope that exposes completely of digital imagery plate makes only needs single exposure just can obtain all diagnostic messages in many cases.Like this, the application of digital imagery plate has fundamentally reduced the radiation dose load.
Description of drawings
A kind of X-ray radiographic digital imaging detection method for power grid GIS (Geographic Information System) equipment of the present invention has following accompanying drawing:
Fig. 1 is a kind of X-ray radiographic digital imaging detection method for power grid GIS (Geographic Information System) equipment imaging process of the present invention structural representation;
Fig. 2 is a kind of X-ray radiographic digital imaging detection method for power grid GIS (Geographic Information System) equipment image processing process of the present invention structural representation.
Wherein: 1, X ray photosensitive imaging plate; 2, film loader; 3, equipment need be taken the position; 4, X-ray production apparatus; 5, ray emission window; 6, X-ray machine X support; 7, CR digital picture scanner; 8, data line; 9, computer.
Embodiment
Below in conjunction with drawings and Examples a kind of X-ray radiographic digital imaging detection method for power grid GIS (Geographic Information System) equipment technical scheme of the present invention is further described.
As Fig. 1-shown in Figure 2, a kind of X-ray radiographic digital imaging detection method for power grid GIS (Geographic Information System) equipment of the present invention, be used for X ray transillumination digital imaging system, this system comprises that X ray photosensitive imaging plate 1, film loader 2, equipment need take position 3, X-ray production apparatus 4, ray emission window 5, X-ray machine X support 6, scanner 7, data line 8, computer 9, and described detection method comprises the steps:
1) definite position that needs shooting;
2) X-ray production apparatus 4 sets up X-ray production apparatus 4 firm being placed on the shooting platform that will be fixed on the X-ray machine X support 6 with putting of X ray photosensitive imaging plate 1, the position 3 that ray emission window 5 perpendicular alignmnets need be taken, be close to apparatus casing in the back side of subject and ray emission window 7 relative directions and place X ray photosensitive imaging plate 1, ray emission window 5 centers and equipment need be taken position 3, X ray photosensitive imaging plate 1 center point-blank;
3) connect cable between X-ray production apparatus 1 and the control desk, check that control desk and X-ray production apparatus 4 work well;
4) CR digital picture scanner 7 is connected by exclusive data 8 lines with computer 11, checks that data communication is normal;
5) set X-ray production apparatus 4 acquisition parameters according to field condition, keep the ray focal length between the 500-900mm, electric current is that 90-240 is between second in 2-4mA, transillumination time;
6) acquisition parameters is set and is finished, and opens control desk high pressure firing button, carries out sensitivity of film and takes;
7) sensitivity of film finishes, and closes the high pressure emission, takes off film loader 2, takes out the X ray photosensitive imaging plate 1 of sensitization, adopts CR digital picture scanner 7 to carry out data read, obtains the digital picture photo;
8) digital picture input computer 9 employings that obtain are arranged on obtaining with analysis software in the CR digital picture scanner and handle, obtain different observing effects, and finish work such as various measurements, mark, contrast;
9) shooting different parts repeating step 2), 5), 6), 7), 8).
The ray focal length of described X-ray production apparatus is 700mm, and electric current is 3mA, and the transillumination time is 150 seconds.
1) determines that the position that needs to take is a power grid GIS equipment isolation switch;
2) X-ray production apparatus 4 sets up X-ray production apparatus 4 firm being placed on the shooting platform that will be fixed on the X-ray machine X support 6 with putting of X ray photosensitive imaging plate 1, the position 3 that ray emission window 5 perpendicular alignmnets need be taken is an isolation switch, be close to apparatus casing in the back side of subject isolation switch and ray emission window 5 relative directions and place X ray photosensitive imaging plate 1, ray emission window 5 centers and equipment need be taken position 3, X ray photosensitive imaging plate 1 center point-blank;
3) connect cable between X-ray production apparatus 1 and the control desk, check that control desk and X-ray production apparatus 4 work well;
4) CR digital picture scanner 7 is connected by exclusive data 8 lines with computer 9, checks that data communication is normal;
5) set X-ray production apparatus 4 acquisition parameters according to field condition, keeping the ray focal length is 240 seconds at 900mm, electric current in 4mA, transillumination time;
6) acquisition parameters is set and is finished, and opens control desk high pressure firing button, carries out sensitivity of film and takes;
7) sensitivity of film finishes, and closes the high pressure emission, takes off film loader 2, takes out the X ray photosensitive imaging plate 1 of sensitization, adopts CR digital picture scanner 7 to carry out data read, obtains the digital picture photo;
8) digital picture input computer 9 employings that obtain are arranged on obtaining with analysis software in the CR digital picture scanner and handle, obtain different observing effects, and finish work such as various measurements, mark, contrast;
9) shooting different parts repeating step 2), 5), 6), 7), 8).
1) determines that the position that needs to take is an isolating switch;
2) X-ray production apparatus 4 sets up X-ray production apparatus 4 firm being placed on the shooting platform that will be fixed on the X-ray machine X support 6 with putting of X ray photosensitive imaging plate 1, the position 3 that ray emission window 5 perpendicular alignmnets need be taken is the isolating switch cylindrical shell, it is that the isolating switch cylindrical shell is placed X ray photosensitive imaging plate 1 that the direction relative with ray emission window 5 that be the isolating switch back side at the back side of subject is close to apparatus casing, and ray emission window 5 centers and equipment need be taken position 3, X ray photosensitive imaging plate 1 center point-blank;
3) connect cable between X-ray production apparatus 1 and the control desk, check that control desk and X-ray production apparatus 4 work well;
4) CR digital picture scanner 7 is connected by exclusive data 8 lines with computer 9, checks that data communication is normal;
5) set X-ray production apparatus 4 acquisition parameters according to field condition, keeping the ray focal length is that 700mm, electric current are that 3mA, transillumination time are 150 seconds;
6) acquisition parameters is set and is finished, and opens control desk high pressure firing button, carries out sensitivity of film and takes;
7) sensitivity of film finishes, and closes the high pressure emission, takes off film loader 2, takes out the X ray photosensitive imaging plate 1 of sensitization, adopts CR digital picture scanner 7 to carry out data read, obtains the digital picture photo;
8) digital picture input computer 9 employings that obtain are arranged on obtaining with analysis software in the CR digital picture scanner and handle, obtain different observing effects, and finish work such as various measurements, mark, contrast;
9) shooting different parts repeating step 2), 5), 6), 7), 8).
1) determines that the position that needs to take is a bus bar canister;
2) X-ray production apparatus 4 sets up X-ray production apparatus 4 firm being placed on the shooting platform that will be fixed on the X-ray machine X support 6 with putting of X ray photosensitive imaging plate 1, the position 3 that ray emission window 5 perpendicular alignmnets need be taken is the bus bar canister cylindrical shell, be close to apparatus casing in the back side of subject and ray emission window 5 relative directions and place X ray photosensitive imaging plate 1, ray emission window 5 centers and equipment need be taken position 3, X ray photosensitive imaging plate 1 center point-blank;
3) connect cable between X-ray production apparatus 1 and the control desk, check that control desk and X-ray production apparatus 4 work well;
4) CR digital picture scanner 7 is connected by exclusive data 8 lines with computer 9, checks that data communication is normal;
5) set X-ray production apparatus 4 acquisition parameters according to field condition, keeping the ray focal length is that 500mm, electric current are that 2mA, transillumination time are 90 seconds;
6) acquisition parameters is set and is finished, and opens control desk high pressure firing button, carries out sensitivity of film and takes;
7) sensitivity of film finishes, and closes the high pressure emission, takes off film loader 2, takes out the X ray photosensitive imaging plate 1 of sensitization, adopts CR digital picture scanner 7 to carry out data read, obtains the digital picture photo;
8) digital picture input computer 9 employings that obtain are arranged on obtaining with analysis software in the CR digital picture scanner and handle, obtain different observing effects, and finish work such as various measurements, mark, contrast;
9) shooting different parts repeating step 2), 5), 6), 7), 8).
Claims (2)
1. X-ray radiographic digital imaging detection method for power grid GIS (Geographic Information System) equipment, be used for X ray transillumination digital imaging system, this system comprises that X ray photosensitive imaging plate (1), film loader (2), equipment need take position (3), X-ray production apparatus (4), ray emission window (5), X-ray machine X support (6), CR digital picture scanner (7), data line (8), computer (9), it is characterized in that described detection method comprises the steps:
1) definite position that needs shooting;
2) setting up with putting of X ray photosensitive imaging plate (1) of X-ray production apparatus (4) will be fixed on firm being placed on the shooting platform of X-ray production apparatus (4) on the X-ray machine X support (6), the position (3) that ray emission window (5) perpendicular alignmnet need be taken, be close to apparatus casing in the back side of the subject direction relative with ray emission window (5) and place X ray photosensitive imaging plate (1), ray emission window (5) center and equipment need be taken position (3), X ray photosensitive imaging plate (1) center point-blank;
3) connect cable between X-ray production apparatus (1) and the control desk, check that control desk and X-ray production apparatus (4) work well;
4) CR digital picture scanner (7) is connected by exclusive data (8) line with computer (9), checks that data communication is normal;
5) set X-ray production apparatus (4) acquisition parameters according to field condition, keep the ray focal length between the 500-900mm, electric current is that 90-240 is between second in 2-4mA, transillumination time;
6) acquisition parameters is set and is finished, and opens control desk high pressure firing button, carries out sensitivity of film and takes;
7) sensitivity of film finishes, and closes the high pressure emission, takes off film loader (2), takes out the X ray photosensitive imaging plate (1) of sensitization, adopts CR digital picture scanner (7) to carry out data read, obtains the digital picture photo;
8) digital picture input computer (9) employing that obtains is arranged on obtaining with analysis software in the CR digital picture scanner and handles, obtain different observing effects, and finish work such as various measurements, mark, contrast;
9) shooting different parts repeating step 2), 5), 6), 7), 8).
2. X-ray radiographic digital imaging detection method for power grid GIS (Geographic Information System) equipment according to claim 1 is characterized in that: the ray focal length of described X-ray production apparatus is 700mm, and electric current is 3mA, and the transillumination time is 150 seconds.
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