CN105004733A - Portable insulation shielding fabric flaw testing method and testing instrument - Google Patents
Portable insulation shielding fabric flaw testing method and testing instrument Download PDFInfo
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- CN105004733A CN105004733A CN201510463878.3A CN201510463878A CN105004733A CN 105004733 A CN105004733 A CN 105004733A CN 201510463878 A CN201510463878 A CN 201510463878A CN 105004733 A CN105004733 A CN 105004733A
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Abstract
The invention relates to a portable insulation shielding fabric flaw testing method. The portable insulation shielding fabric flaw testing method is characterized by comprising the steps that firstly, high-definition image collecting is carried out on insulation shielding fabric, and flaw parts are marked; secondly, whether the insulation performance of the flaw parts meet the standard or not is detected in a gradually-pressurizing mode. A flaw testing instrument comprises a suspension support, a handheld lighting scanner, a double-coordinate numerical control infrared laser locking device, a combined control box, a display screen and a permanent magnet probe. The handheld lighting scanner is used for collecting a high-definition image of the outer surface of the insulation shielding fabric. The image is displayed through the display screen, and the combined control box is used for measuring the insulation performance by changing the voltages applied to the two sides of the permanent magnet probe. By means of the insulation shielding fabric flaw testing method and the testing instrument, the problems that observation conducted merely through the human eyes is inaccurate, and the flaw parts cannot be scientifically measured through a megger are solved, the shielding fabric with the potential insulation issue can be detected out, the personnel safety of live line working personnel is ensured, the advantages are obvious, and the insulation shielding fabric flaw testing method and the testing instrument are suitable for application and popularization.
Description
Technical field
The present invention relates to a kind of Portable insulation armored fabric defect test method and tester, in particular, particularly relate to a kind of method of testing and the tester that realize the undetected survey of insulating protection fabric defect nothing left.
Background technology
Insulating protection fabric (as insulation isolation clothes, insulation isolation tippet, insulation insulation blanket etc.) is applied to high-voltage hot-line work occasion, plays effect staff and electrified body kept apart, makes it from the injury of high pressure.High pressure due to power distribution network 10kV has very strong penetrability, and this just requires that insulating protection fabric must stand intact, once there be the situation appearance of breakage, scuffing, high pressure can puncture instantaneously through breakage, causes great damage to field personnel.
Therefore, this just requires that staff checks and detects the insulating protection fabric dressed or use, to guarantee that it can normally use before hot line job.Existing inspection method, there is scuffing, damaged part from checking whether in appearance in the macroscopic form of some employings, if existed, can not hot line job use again; Relatively the regulation detection method of science adopts " megger " insulating property to insulating protection fabric surfaces externally and internally to measure, because armored fabric itself is insulating material, utilize the probe of megger to where and how to measure be all actual use time institute problems faced, cause also do not have at present a kind of science, rationally, the measuring method that uses, scene exhaustively insulating property inspection and measurement can be realized to insulating protection fabric, guarantee the safety of staff.
Summary of the invention
The present invention, in order to overcome the shortcoming of above-mentioned technical matters, provides a kind of Portable insulation armored fabric defect test method and tester.
Portable insulation armored fabric defect test method of the present invention, its special feature is, realize by the following method: first utilize the outside surface of image collecting device to insulating protection fabric to be detected successively to carry out high-definition image collection, in the process of image acquisition, by observing the local high-definition image of insulating protection fabric shown on display screen, judge whether to there is defect that is damaged and that scratch, and make marks at fault location, if on insulating protection fabric the mark of fault location be respectively a1, a2 ..., an; Then the permanent magnetism probe containing electrode is placed in the both sides at insulating protection fabric defect place, electrode ground connection, the electrode of opposite side of side are connected with the output terminal of pressue device, whether the insulating property being detected fault location by the mode of pressurizeing gradually are up to standard, if there is fault location not up to standard, then show that this insulating protection fabric is unavailable.
Portable insulation armored fabric defect test method of the present invention, the defect of described breakage and scuffing is marked by automatic positioning method, and adopting two coordinate numerical control infrared laser locating device automatically to locate, two coordinate numerical control infrared laser locating device is provided with can respectively with X-axis laser instrument and the Y-axis laser instrument of the motion of respective servomotor; When behind existing defects region on discovery insulating protection fabric, servomotor can order about laser movement automatically to relevant position, and the intersection point of X-axis laser instrument and Y-axis laser instrument institute isolychn is defective locations, achieves the automatic location of defect area.
Portable insulation armored fabric defect test method of the present invention, describedly judges the fault location of insulating protection fabric employing pairing comparision whether up to standard or standard value criterion;
Pairing comparision adopts following steps to realize: by the local high-definition image of the insulating protection fabric shown by display screen, select intact region, and measures the insulation resistance during applying nominal voltage of this region, Leakage Current; And then measure defect area apply nominal voltage time insulation resistance and Leakage Current, by the difference of contrast defect area and the insulator chain in excellent region and Leakage Current whether within the specific limits, judge that whether the insulating property of fault location are up to standard;
Standard value criterion is: increase the voltage being applied to defect area place gradually, see the withstand voltage of the insulating protection fabric defined that whether can reach to be detected, if be unreachable to, then show that this insulating protection fabric is unavailable.
Portable insulation armored fabric defect test instrument of the present invention, comprise suspension holdfast, hand-held shadow scanner, combination control box, display screen, permanent magnetism probe and two coordinate numerical control infrared laser locating device, hand-held shadow scanner, display screen are all connected with combination control box with permanent magnetism probe; Described suspension holdfast is used for fixing insulating protection fabric to be detected, and hand-held shadow scanner is for gathering the high-definition image of insulating protection fabric exterior; Combination control box is used for processing gathered image and being shown by display screen, and permanent magnetism probe is connected with the voltage output end of combination control box; Combination control box is applied to the voltage of permanent magnetism probe both sides by changing, realize the measurement to insulating protection fabric-insulation performance;
Described pair of coordinate numerical control infrared laser locating device is made up of X-axis detent mechanism and Y-axis detent mechanism, X-axis detent mechanism and Y-axis detent mechanism are by leading screw, the nut be arranged on screw mandrel, servomotor composition, the two ends of screw mandrel are fixed by axle bed, and servomotor orders about screw mandrel by shaft coupling and rotates; Two nuts are fixed with respectively X-axis laser instrument and Y-axis laser instrument that fault location is positioned.
Portable insulation armored fabric defect test instrument of the present invention, described permanent magnetism probe is made up of left probe socket and right probe socket, electrode and permanent magnet is all fixed with in left probe socket and right probe socket, the side of left probe socket and right probe socket is provided with plug, opposite side is fixed with the electrostatic prevention film formed by semiconductor material, plug is provided with the wire be electrically connected with electrode, electrostatic prevention film contacts with electrode; Left probe socket and right probe socket are arranged the side heteropolarity each other of electrostatic prevention film, make left probe socket and right probe socket can add the defective locations place being held in insulating protection fabric; Wire on the plug of side is connected with power supply ground, and the wire on opposite side plug is connected with the power output end on combination control box.
Portable insulation armored fabric defect test instrument of the present invention, described suspension holdfast is telescopic bracket, suspension holdfast is provided with some geometrical clamps that insulating protection fabric is accommodated, combination control box is provided with the measurement data display screen of display testing result.
The invention has the beneficial effects as follows: Portable insulation armored fabric defect test method of the present invention and tester, first the high-definition image of insulating protection fabric exterior is obtained by image capture device, check whether insulating protection fabric exists the defect of breakage or scuffing by the real-time pictures showing screen display, and defect area is marked; Then by the permanent magnetism probe being placed in defective locations both sides is carried out insulating property test, whether up to standard with all defect region of judge mark.Further, by adopting two coordinate numerical control infrared laser locating device, automatically can locate fault location, achieving the precise positioning to defective locations and detection.
Portable defect test method of the present invention and tester, can all defect region on armored fabric be found out without omission and detect, solve the inaccuracy of existing simple dependence eye-observation, and adopt " megger " that the problem of scientific measurement cannot be carried out to fault location, can ensure that the armored fabric that there is insulation hidden danger is found, ensure that the personal safety of live line work personnel, beneficial effect is remarkable, is suitable for application.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of conventional images acquisition system;
Fig. 2 is the schematic diagram of insulating protection fabric defect tester of the present invention;
Fig. 3 is the structural drawing of suspension holdfast in the present invention;
Fig. 4 is the structural drawing of permanent magnetism probe in the present invention;
Fig. 5 is the structural representation of two coordinate numerical control infrared laser locating device in the present invention.
In figure: 1 suspension holdfast, 2 hand-held shadow scanners, 3 combination control boxs, 4 display screens, 5 permanent magnetism probes, 6 measurement data display screens, 7 geometrical clamps, 8 insulating protection fabrics, 9 left probe sockets, 10 right probe sockets, 11 electrodes, 12 plugs, 13 permanent magnets, 14 electrostatic prevention films, 15 adjustment caps, 16 insulating protection fabrics, 17 illumination systems, 18 ccd video cameras, 19 image pick-up cards, 20 industrial computers, 21 control gears, 22 detected targets, 23 X-axis detent mechanisms, 24 Y-axis detent mechanisms, 25 screw mandrels, 26 nuts, 27 servomotors, 28 shaft couplings, 29 axle beds, 30 holders, 31 X-axis laser instruments, 32 Y-axis laser instruments.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, give the schematic diagram of conventional images acquisition system, shown ccd video camera 18 is under the illuminating effect of illumination system 17, image acquisition is carried out to detected target 22, the image gathered, after the process of image pick-up card 19, forms the view data that can identify for industrial computer 20.The image of reception not only can show by industrial computer 20, but also can carry out processing, the process such as identification, and result is fed back to control gear 21, is operated accordingly by control gear 21.As can be seen here, the collection of high-definition image is a kind of technology of relative maturity.
Portable insulation armored fabric defect inspection method of the present invention is: first utilize the outside surface of image collecting device to insulating protection fabric to be detected successively to carry out high-definition image collection, in the process of image acquisition, by observing the local high-definition image of insulating protection fabric shown on display screen, judge whether to there is defect that is damaged and that scratch, and make marks at fault location, if on insulating protection fabric the mark of fault location be respectively a1, a2 ..., an; Then the permanent magnetism probe containing electrode is placed in the both sides at insulating protection fabric defect place, electrode ground connection, the electrode of opposite side of side are connected with the output terminal of pressue device, whether the insulating property being detected fault location by the mode of pressurizeing gradually are up to standard, if there is fault location not up to standard, then show that this insulating protection fabric is unavailable.
Wherein, defect that is damaged and that scratch is marked by automatic positioning method, and adopting two coordinate numerical control infrared laser locating device automatically to locate, two coordinate numerical control infrared laser locating device is provided with can respectively with X-axis laser instrument and the Y-axis laser instrument of the motion of respective servomotor; When behind existing defects region on discovery insulating protection fabric, servomotor can order about laser movement automatically to relevant position, and the intersection point of X-axis laser instrument and Y-axis laser instrument institute isolychn is defective locations, achieves the automatic location of defect area.
Wherein, the fault location of insulating protection fabric employing pairing comparision whether up to standard or standard value criterion is judged; Pairing comparision adopts following steps to realize: by the local high-definition image of the insulating protection fabric shown by display screen, select intact region, and measures the insulation resistance during applying nominal voltage of this region, Leakage Current; And then measure defect area apply nominal voltage time insulation resistance and Leakage Current, by the difference of contrast defect area and the insulator chain in excellent region and Leakage Current whether within the specific limits, judge that whether the insulating property of fault location are up to standard; Standard value criterion is: increase the voltage being applied to defect area place gradually, see the withstand voltage of the insulating protection fabric defined that whether can reach to be detected, if be unreachable to, then show that this insulating protection fabric is unavailable.
As shown in Figure 2, give the schematic diagram of insulating protection fabric defect tester of the present invention, it comprises suspender 1, hand-held shadow scanner 2, combination control box 3, display screen 4, permanent magnetism probe 5, measurement data display screen 6 and geometrical clamp 7, shown multiple geometrical clamps 7 are arranged on suspension holdfast 1, by the blessing effect of geometrical clamp 7 to insulating protection fabric 16 to be detected, insulating protection fabric 16 can be fixed on suspension holdfast 1.Hand-held shadow scanner 2, display screen 4 are all connected with combination control box 3 with permanent magnetism probe 5.
Hand-held shadow scanner 2 successively gathers the image of insulating protection fabric 8 outside surface, and the view data of collection is inputed on combination control box 3, the local high-definition image of the insulating protection fabric of collection is shown by display screen 4 by combination control box 3, testing staff is by observing the high-definition image of display on display screen 4, defect that is damaged on insulating protection fabric 8 and that scratch can be found, solve the problem not easily found out by defect area by naked eyes.After finding out the defect area on insulating protection fabric, and it is marked, and be recorded in combination control box 3.Shown measurement data display screen 6 is for showing measurement result, so that testing staff reads.As shown in Figure 3, give the structural drawing of suspension holdfast in the present invention, if the suspension holdfast shown in Fig. 21 is front view, then the suspension holdfast 1 in Fig. 3 is just vertical view; Shown suspension holdfast 1 is extension type, so that carry and use.
After defect area on insulating protection fabric 16 all marks, then permanent magnetism probe 5 is placed in the both sides of defect area, the electrode ground connection of side in permanent magnetism probe 5, the electrode of opposite side is connected with the power output end of combination control box 3.By combination control box 3 pairs of side electrode application voltage, adopt pairing comparision recited above or standard value criterion, judge that whether the insulating property of defect area are up to standard, if not up to standard, then this insulating protection fabric of surface is unavailable.
As shown in Figure 5, give the structural representation of two coordinate numerical control infrared laser locating device in the present invention, two coordinate numerical control infrared laser locating device is arranged on suspension holdfast 1, it is made up of X-axis detent mechanism 23 and Y-axis detent mechanism 24, X-axis detent mechanism 23 and Y-axis detent mechanism 24 form by leading screw 25, nut 26, servomotor 27, shaft coupling 28, axle bed 29, holder 30, and the screw mandrel 25 in X-axis detent mechanism 23 and Y-axis detent mechanism is arranged along the transverse direction of insulating protection fabric 8 and vertical direction respectively.The two ends of screw mandrel 25 are supported by two axle beds 29, to ensure freely rotating of screw mandrel 25.Servomotor 27 orders about screw mandrel 25 by shaft coupling 28 and rotates, and nut 26 is arranged on screw mandrel 25, can order about nut 26 and move along its length in the process that screw mandrel 25 rotates; Holder 30 realizes the fixing of servomotor 27 and supporting role.Nut 26 on X-axis detent mechanism 23 and Y-axis detent mechanism 24 is fixed with X-axis laser instrument 31 and Y-axis laser instrument 32 respectively.
After combination control box 3 detects that on insulating protection fabric 8, defectiveness region exists, the servomotor then controlling X-axis detent mechanism 23 and Y-axis detent mechanism 24 moves, relevant position is moved to make X-axis laser instrument 31 and Y-axis laser instrument 32, send out laser joint be the position at defect area place, to realize accurate marker.
As shown in Figure 4, give the structural drawing of permanent magnetism probe in the present invention, it is made up of left probe socket 9 and right probe socket 10, and during use, left probe socket 9 and right probe socket 10 lay respectively at the both sides of insulating protection fabric 16.Be provided with electrode 11 and permanent magnet 13 in left probe socket 9 and right probe socket 10, electrode 11 is in central position, and permanent magnet 13 is positioned at periphery.The left side of left probe socket 9 and the right side of right probe socket 10 are all fixed with plug 12, and plug 12 is fixed on left probe socket 9 or right probe socket 10 by adjustment cap 15, is provided with the wire be electrically connected with electrode 11 in plug 12.
Wire in shown left probe socket 9 on plug 12 is connected with power supply ground, and the wire on right probe socket 10 is connected with the voltage output end of combination control box 3.The right side of left probe socket 9 is provided with electrostatic prevention film 14, and the left side of right probe socket 10 is also provided with electrostatic prevention film 14, and electrostatic prevention film 14 is formed by semi-conducting material manufacturing, and electrostatic prevention film 14 and electrode 11 close contact on corresponding probe socket, to realize conducting function.
The mounting means of permanent magnet 13 in left probe socket 9 and right probe socket 10 should meet: on left probe socket 9 and right probe socket 10, electrostatic prevention film 14 side should opposite pole each other.Like this, in use, left probe socket 9 and right probe socket 10 meeting automatic absorbing, in the both sides of insulating protection fabric 8, are convenient to realize the detection to fault location insulating property.After treating that all fault locations all detect, in order to prevent electrostatic from remaining on tested insulating protection fabric, the left surface of insulating protection fabric 8 is used for being connected to the ground, and electric charge can be fallen by abrupt release; Also need by the wire on right probe socket 10 is connected to ground, to discharge electrostatic.
Claims (6)
1. a Portable insulation armored fabric defect test method, it is characterized in that, realize by the following method: first utilize the outside surface of image collecting device to insulating protection fabric to be detected successively to carry out high-definition image collection, in the process of image acquisition, by observing the local high-definition image of insulating protection fabric shown on display screen, judge whether to there is defect that is damaged and that scratch, and make marks at fault location, if on insulating protection fabric the mark of fault location be respectively a1, a2 ..., an; Then the permanent magnetism probe containing electrode is placed in the both sides at insulating protection fabric defect place, electrode ground connection, the electrode of opposite side of side are connected with the output terminal of pressue device, whether the insulating property being detected fault location by the mode of pressurizeing gradually are up to standard, if there is fault location not up to standard, then show that this insulating protection fabric is unavailable.
2. Portable insulation armored fabric defect test method according to claim 1, it is characterized in that: the defect of described breakage and scuffing is marked by automatic positioning method, and adopting two coordinate numerical control infrared laser locating device automatically to locate, two coordinate numerical control infrared laser locating device is provided with can respectively with X-axis laser instrument and the Y-axis laser instrument of the motion of respective servomotor; When behind existing defects region on discovery insulating protection fabric, servomotor can order about laser movement automatically to relevant position, and the intersection point of X-axis laser instrument and Y-axis laser instrument institute isolychn is defective locations, achieves the automatic location of defect area.
3. Portable insulation armored fabric defect test method according to claim 1, is characterized in that: describedly judge the fault location of insulating protection fabric employing pairing comparision whether up to standard or standard value criterion;
Pairing comparision adopts following steps to realize: by the local high-definition image of the insulating protection fabric shown by display screen, select intact region, and measures the insulation resistance during applying nominal voltage of this region, Leakage Current; And then measure defect area apply nominal voltage time insulation resistance and Leakage Current, by the difference of contrast defect area and the insulator chain in excellent region and Leakage Current whether within the specific limits, judge that whether the insulating property of fault location are up to standard;
Standard value criterion is: increase the voltage being applied to defect area place gradually, see the withstand voltage of the insulating protection fabric defined that whether can reach to be detected, if be unreachable to, then show that this insulating protection fabric is unavailable.
4. a Portable insulation armored fabric defect test instrument, it is characterized in that: comprise suspension holdfast (1), hand-held shadow scanner (2), combination control box (3), display screen (4), permanent magnetism probe (5) and two coordinate numerical control infrared laser locating device, hand-held shadow scanner, display screen are all connected with combination control box with permanent magnetism probe; Described suspension holdfast is used for fixing insulating protection fabric (8) to be detected, and hand-held shadow scanner is for gathering the high-definition image of insulating protection fabric exterior; Combination control box is used for processing gathered image and being shown by display screen, and permanent magnetism probe is connected with the voltage output end of combination control box; Combination control box is applied to the voltage of permanent magnetism probe both sides by changing, realize the measurement to insulating protection fabric-insulation performance;
Described pair of coordinate numerical control infrared laser locating device is made up of X-axis detent mechanism (23) and Y-axis detent mechanism (24), X-axis detent mechanism and Y-axis detent mechanism are by leading screw (25), the nut (26) be arranged on screw mandrel, servomotor (27) composition, the two ends of screw mandrel are fixed by axle bed (29), and servomotor orders about screw mandrel by shaft coupling (28) and rotates; Two nuts are fixed with respectively X-axis laser instrument (31) and Y-axis laser instrument (32) that fault location is positioned.
5. Portable insulation armored fabric defect test instrument according to claim 4, it is characterized in that: described permanent magnetism probe (5) is made up of left probe socket (9) and right probe socket (10), electrode (11) and permanent magnet (13) is all fixed with in left probe socket and right probe socket, the side of left probe socket and right probe socket is provided with plug (12), opposite side is fixed with the electrostatic prevention film (14) formed by semiconductor material, plug is provided with the wire be electrically connected with electrode (11), electrostatic prevention film contacts with electrode; Left probe socket and right probe socket are arranged the side heteropolarity each other of electrostatic prevention film (14), make left probe socket and right probe socket can add the defective locations place being held in insulating protection fabric; Wire on side plug (12) is connected with power supply ground, and the wire on opposite side plug is connected with the power output end on combination control box.
6. the Portable insulation armored fabric defect test instrument according to claim 4 or 5, it is characterized in that: described suspension holdfast (1) is telescopic bracket, suspension holdfast is provided with some geometrical clamps (7) that insulating protection fabric is accommodated, combination control box (3) is provided with the measurement data display screen (6) of display testing result.
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| CN201510463878.3A CN105004733B (en) | 2015-07-31 | 2015-07-31 | A kind of Portable insulation armored fabric defect test method and tester |
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| CN105785245A (en) * | 2016-04-24 | 2016-07-20 | 国网辽宁省电力有限公司抚顺供电公司 | Live insulated clothing detection device |
| CN108120720A (en) * | 2017-12-15 | 2018-06-05 | 宋金博 | A kind of Bridge Crack identification device based on camera and laser line generator |
| CN108572174A (en) * | 2018-04-25 | 2018-09-25 | 苏州农业职业技术学院 | A kind of quality of agricultural product index nondestructive detection method |
| CN111721891A (en) * | 2020-05-18 | 2020-09-29 | 镇江宇诚智能装备科技有限责任公司 | Linen cleanliness detection system and detection method thereof |
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| CN113702450A (en) * | 2020-05-22 | 2021-11-26 | 新疆金风科技股份有限公司 | Method and device for detecting defects of magnetic pole coating |
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| CN105004733B (en) | 2017-10-24 |
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| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Gang Inventor after: Zuo Xinbin Inventor after: Chen Gang Inventor after: Shang Tao Inventor after: Liu Shiliang Inventor after: Xu Qinshan Inventor after: Cao Jianguo Inventor after: Zhang Xiaochuan Inventor after: Li Shidong Inventor before: Li Gang Inventor before: Zuo Xinbin Inventor before: Zou Zongfeng Inventor before: Shang Tao Inventor before: Liu Shiliang |