CN105842593A - Ultrasonic sensor stable test apparatus - Google Patents
Ultrasonic sensor stable test apparatus Download PDFInfo
- Publication number
- CN105842593A CN105842593A CN201610307927.9A CN201610307927A CN105842593A CN 105842593 A CN105842593 A CN 105842593A CN 201610307927 A CN201610307927 A CN 201610307927A CN 105842593 A CN105842593 A CN 105842593A
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- China
- Prior art keywords
- sensor
- ultrasonic sensor
- firm banking
- testing device
- forearm
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1209—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
Abstract
The invention discloses an ultrasonic sensor stable test apparatus. The test apparatus comprises test rod and a sensor stable apparatus arranged at the front end of the test rod, wherein the test rod and the sensor stable apparatus are connected through an angle variable mode. The apparatus provided by the invention can be widely applied to ultrasonic partial discharge sensors of most manufacturers and enhances the applicability of products.
Description
Technical field
The present invention relates to a kind of ultrasonic sensor steady testing device.
Background technology
GIS(Gas
Insulated Switchgear) gas-insulated switch combined electrical apparatus, bus, breaker, CT, PT, disconnecting switch, arrester is combined and is closed, insulating gas SF6 is as arc extinguishing and dielectric in application, compared with conventional electrical devices, there is floor space little, simple installation, by the advantage that surrounding environment influence is little, GIS device failure rate is low, data show, the fault rate of GIS substation equipment only has the 20% ~ 40% of conventional open style substation equipment, make maintenance work few more a lot of than opening-type equipment, thus extend the cycle of repair and maintenance.
China's first generation GIS just put into operation as far back as the eighties in last century, and along with old GIS device runs the continuous continuity of time, new GIS device the most constantly puts into operation, and the danger that GIS total breakdown rate rises just is becoming increasing.According to the statistical analysis of external authoritative institution, current international GIS fault rate far above IEC recommend every hundred between the next year level of 0.1 time.Simultaneously, along with increasing of GIS transformer station, the problem of GIS equipment coming out the most slowly, such as, GIS equipment manufacturer is very different, equipment quality differs greatly, and some even has family's defect, it occur frequently that equipment does not arrive the time between overhauls(TBO) and the situation of internal fault occurs in running；And for example GIS volume is smaller, and all of electrical equipment is necessary for being distributed the tightst in a limited container, and wherein certain equipment breaks down, and is just likely to travel to adjacent equipment, makes failure propagation.GIS fault restoration is considerably complicated, it is sometimes desirable to fortnight or longer time could repair.Utilize ultrasonic partial discharge Detection Techniques, can effectively disclose the many defects within GIS under conditions of equipment does not has a power failure, find GIS internal abnormality and the generation of fault in time.
Using specialty sensor (probe) in ultrasonic partial discharge Detection Techniques, sensor (probe) contacts whether tight the biggest on test result impact when test with tank body.The slight shake of tester's hand in test process, hand apply to sensor that pressure is uneven all can cause certain interference to test result；It addition, induced electricity can be produced in the region probe metal part that electric field is stronger, make tester to hold steadily, cause measurement difficulty；And limited by arm length, electrical equipment measurements in standing GIS is limited in scope, and needs erection ladder for the test of eminence equipment and joins personnel and carry out staircase work, and waste of manpower, testing progress are slow.And some position is due to induced electricity too greatly, testing crew cannot be tested by ascending stair, it is possible to omits defect or trouble point.For the operation at 220kV and following GIS device, due to tight alternately, tester cannot be introduced into alternate narrow zone, it is also possible to omits defect or trouble point.
In recent years, domestic have substantial amounts of GIS to come into operation, and lacks the research and development to GIS ultrasound examination corollary equipment, it may be said that to a certain extent, even if carrying out the ultrasonic wave electrified detection of GIS to still suffer from certain potential safety hazard.Therefore, it is necessary to increase the developmental research of corollary equipment that GIS ultrasound examination is correlated with.Owing to GIS extensively applies, the supporting Work tool research and development about the ultrasonic wave electrified detection of GIS are the certainty that following live detection technology develops.
Institute of Electric Power of Norway uses ultrasonic method that GIS fault diagnosis technology has carried out research work long-term, substantial amounts of, according to being published in CIGRE(international conference on large HV electric systems) on research report, defect in GIS being detected repeatedly, it represents instrument AIA and obtains the extensive favorable comment in industry.Utilities Electric Co. of Malaysia has also carried out detection work by ultrasonic method to GIS, have received good effect, as detected the local discharge signal of the loosening generation due to shielding part at two disconnector cabinets.In addition ultrasonic method is obtained in Quebec, CAN hydroelectric power plant, Siemens Company etc. and is widely applied.Although abroad for the ultrasonic detection method comparative maturity of GIS, but relevant corollary equipment rarely has report.
Domestic also have unit to study the ultrasonic detection technology of GIS; as Shanghai China take advantage of, Hangzhou West Lake electronics etc.; the ultrasound bar of Hangzhou Xihu Institute of Electronic Research's research and development; band Telescopic; disclosure satisfy that the requirement that distance is tested; but it is special that it is designed as AIA supersonic wave test instrument; the sensor (probe) of Other Instruments cannot support the use with it; and front end sensors (probe) is fixed; contact surface is little; guarantee sensor (probe) that cannot be certain during distance test is in close contact with GIS tank body, and on-the-spot test deviation is bigger.
Summary of the invention
Goal of the invention:
The present invention provides a kind of ultrasonic sensor steady testing device, its objective is to solve the most existing problem.
Technical scheme:
A kind of ultrasonic sensor steady testing device, it is characterised in that: this test device includes reference test bar and is arranged on the sensor stabilization device of reference test bar front end, is connected between reference test bar with sensor stabilization device by the way of variable-angle.
Reference test bar uses binodal telescopic structure, and anti-skidding insulation sleeve is arranged at reference test bar bottom, and the reference test bar body of rod is also with the bandage being firmly fixed on the body of rod by the transmission line between sensor and instrument.
Sensor stabilization device is made up of sensor fastening device, spring and connection cover, the bottom of sensor fastening device is provided with resilient supporting unit, resilient supporting unit connects the base of sensor stabilization device, sensor fastening device is arranged on and connects the position in the middle of cover and be connected with being connected cover by spring, the plane connecting cover is slightly below the test surfaces of the sensor that sensor fastening device is fixed, and the bottom connecting cover is connected with the base of sensor stabilization device by hound.
Sensor fastening device includes that two fixed arms and firm banking, two fixed arms are flexibly connected by intermediate active bearing and form H-shaped structure, and firm banking is up-small and down-big truncated cone-shaped structure, and the periphery of round platform is provided with screw thread；Fixed arm includes forearm and postbrachium, and the inwall of postbrachium is the structure that the outer wall with firm banking adapts, and the inwall at postbrachium is provided with and can screw, with the outer wall thread of truncated cone-shaped structure, the screw thread coordinated mutually；When postbrachium by firm banking (screw down over and the most outside separate time, forearm the most inwardly clamps.
Forearm is arc elastic component.
The front end of forearm is provided with arc deck.
Arc deck is arranged on the front end of forearm by torsion spring.
Be provided with at intermediate active bearing control postbrachium inwardly tighten up tighten up torsion spring.
The two ends of live bearing are connected with the upper end of lifting connecting rod, the lower end of lifting connecting rod puts in firm banking, the lower end of lifting connecting rod is provided with and prevents from lifting the dop that connecting rod is extracted out in firm banking, and lifting connecting rod is can be relative to the component of firm banking lifting.
Advantage and effect
The present invention is a kind of ultrasonic sensor steady testing device, further investigation ultrasonic wave Partial Discharge Detection method is popped one's head in the process of tank body contact, developed by ultrasonic sensor stabilising arrangement, the present invention is made to be firmly fixed by different types of sensor, prevent the induced electricity harm to tester, tight with tank body, stable the contacting of sensor can also be ensured, get rid of operating personnel's interference to test, make test more accurate.The reference test bar being equipped with can be connected with sensor stabilization device, it is achieved distance operates, and expands test scope.Thus will no longer be retrained by tank body locus, test wider, the ultrasonic partial discharge test of the kettle equipment that can realize entirely standing.Meanwhile, make the device of design can be widely suitable for the ultrasonic partial discharge sensor of most producer, increase the applicability of product.
Accompanying drawing explanation
Fig. 1 is the reference test bar structural representation of the present invention；
Fig. 2 is the structural representation of sensor of the invention stabilising arrangement；
Fig. 3 is the reference test bar schematic diagram with the junction of stabilising arrangement of the present invention；
Fig. 4 is the structural representation of sensor fastening device.
Detailed description of the invention
The present invention is described further below in conjunction with the accompanying drawings:
As it can be seen, the present invention proposes a kind of ultrasonic sensor steady testing device, this test device includes reference test bar 1 and is arranged on the sensor stabilization device 2 of reference test bar front end, being connected between reference test bar with sensor stabilization device by the way of variable-angle.
Reference test bar uses binodal telescopic structure, and anti-skidding insulation sleeve 3 is arranged at reference test bar bottom, is possible to prevent the induced electricity that insulating bar breakage produces, facilitates tester's hand-held simultaneously.The reference test bar body of rod is also with the bandage 4 being firmly fixed on the body of rod by the transmission line between sensor and instrument.
Sensor stabilization device is made up of sensor fastening device 5, spring 6 and connection cover 7, the bottom of sensor fastening device 5 is provided with support means 8, support means 8 connects the base 16 of sensor stabilization device, sensor fastening device is arranged on and connects the position in the middle of cover 7 and be connected with being connected cover 7 by spring 6, the plane connecting cover is slightly below the test surfaces of the sensor that sensor fastening device is fixed, and the bottom connecting cover is connected with the base 16 of sensor stabilization device by hound 15.
Sensor fastening device 5 includes that two fixed arms and firm banking 10, two fixed arms are flexibly connected by intermediate active bearing 9 and form H-shaped structure, and firm banking 10 is up-small and down-big truncated cone-shaped structure, and the periphery of round platform is provided with screw thread；Fixed arm includes forearm 11 and postbrachium 12, and the inwall of postbrachium 12 is the structure that the outer wall with firm banking 10 adapts, and the inwall at postbrachium 12 is provided with and can screw, with the outer wall thread of truncated cone-shaped structure, the screw thread coordinated mutually；When postbrachium 12 screwed down over by firm banking 10 and the most outside separate time, forearm 11 the most inwardly clamps.
Forearm 11 is arc elastic component.
The front end of forearm 11 is provided with arc deck 14.
Arc deck 14 is arranged on the front end of forearm 11 by torsion spring 13.
Be provided with at intermediate active bearing 9 control postbrachium 12 inwardly tighten up tighten up torsion spring.
The two ends of live bearing 9 are connected with the upper end of lifting connecting rod 15, the lower end of lifting connecting rod 15 puts in firm banking 10, the lower end of lifting connecting rod 15 is provided with and prevents from lifting the dop that connecting rod 15 is extracted out in firm banking 10, and lifting connecting rod 15 is can be relative to the component of firm banking 10 lifting.
nullWhen sensor fastening device 5 uses，It is pulled to lift the top that connecting rod 15 can arrive，Then forearm 11 is separated，Sensor is put between the arc deck 14 of forearm 11 front end，Screw downwards sensor fastening device 5，Because firm banking 10 is up-small and down-big structure，So along with screwing screwing downwards of sensor fastening device 5，Article two, postbrachium 12 the most outwards separates，And two forearms 11 inwardly tighten up gradually clamping sensor 17 simultaneously，And because the amplitude that forearm 11 inwardly tightens up is how many decisions screwed downwards according to postbrachium 12，So this sensor fastening device 5 can clamp different types of sensor，Make its scope of application wider，Simultaneously，Torsion spring can be set at live bearing 9，This torsion spring ensures the tightening force that two postbrachiums 12 are inside，Make it can more closely and firm banking 10 threaded engagement，Ensure firmness.
It addition, arrange torsion spring 13 in the junction of arc deck 14 with forearm 11, also for the clamping force ensureing arc deck 14.
Reference test bar is formed by insulating materials body plan, disclosure satisfy that the security needs of tester when distance is tested, reference test bar uses binodal telescopic structure, and anti-skidding insulation sleeve is arranged at reference test bar bottom, it is possible to prevent the induced electricity that insulating bar breakage produces, facilitates tester's hand-held simultaneously.The reference test bar body of rod is with bandage, in order to be firmly fixed on the body of rod by the transmission line between sensor and instrument.
Wherein the sensor of different manufacturers can be fixed by sensor fastening device, simultaneously bottom have support to prevent sensor from bottom landing.Sensor fastening device is connected with being connected cover by spring, the plane connecting cover is slightly below the test surfaces of sensor, that is spring is to have an angle obliquely that sensor fastening device is fixed on centre, after during test, sensor test kept man of a noblewoman first contacts with tested tank body, continue to pressure, contacting with tank body until connecting cover plane, the close contact of tank body and sensor can be ensured.Because now, sensor fastening device is not only by the top power of a bottom support and receive and connect the top power obliquely of spring covered simultaneously, under the effect of dual power, sensor is made to contact tightr with tested tank body, meanwhile, the perception area of cover is connected more than sensor, say, that as long as perceiving and ensureing that connecting cover contacts with tested tank body, so sensor just must contact with tested tank body, because the plane connecting cover is somewhat below the test surfaces of sensor.
It is connected (as shown in Figure 3) by the bolt 18 that gear is variable between reference test bar with sensor stabilization device, reference test bar and stabilising arrangement are placed on wherein any gear, tighten bolt, reference test bar is the most locked with the relative angle of stabilising arrangement, only need to unclamp bolt when needing the angle changing both, again tighten after adjusting angle.
Claims (9)
1. a ultrasonic sensor steady testing device, it is characterised in that: this test device includes reference test bar (1) and is arranged on the sensor stabilization device (2) of reference test bar front end, is connected between reference test bar with sensor stabilization device by the way of variable-angle.
Ultrasonic sensor steady testing device the most according to claim 1, it is characterized in that: reference test bar uses binodal telescopic structure, anti-skidding insulation sleeve (3) is arranged at reference test bar bottom, and the reference test bar body of rod is also with the bandage (4) being firmly fixed on the body of rod by the transmission line between sensor and instrument.
Ultrasonic sensor steady testing device the most according to claim 1, it is characterized in that: sensor stabilization device is by sensor fastening device (5), spring (6) and connection cover (7) are constituted, the bottom of sensor fastening device (5) is provided with resilient supporting unit (8), resilient supporting unit (8) connects the base (16) of sensor stabilization device, sensor fastening device is arranged on and connects the position in the middle of cover (7) and be connected with being connected cover (7) by spring (6), the plane connecting cover is slightly below the test surfaces of the sensor that sensor fastening device is fixed, the bottom connecting cover is connected with the base (16) of sensor stabilization device by hound (15).
Ultrasonic sensor steady testing device the most according to claim 3, it is characterized in that: sensor fastening device (5) includes two fixed arms and firm banking (10), two fixed arms are flexibly connected by intermediate active bearing (9) and form H-shaped structure, firm banking (10) is up-small and down-big truncated cone-shaped structure, and the periphery of round platform is provided with screw thread；Fixed arm includes forearm (11) and postbrachium (12), and the inwall of postbrachium (12) is the structure that the outer wall with firm banking (10) adapts, and the inwall at postbrachium (12) is provided with and can screw, with the outer wall thread of truncated cone-shaped structure, the screw thread coordinated mutually；When postbrachium (12) screwed down over by firm banking (10) and the most outside separate time, forearm (11) the most inwardly clamps.
Ultrasonic sensor steady testing device the most according to claim 4, it is characterised in that: forearm (11) is arc elastic component.
6. according to the ultrasonic sensor steady testing device described in claim 4 or 5, it is characterised in that: the front end of forearm (11) is provided with arc deck (14).
Ultrasonic sensor steady testing device the most according to claim 6, it is characterised in that: arc deck (14) is arranged on the front end of forearm (11) by torsion spring (13).
Ultrasonic sensor steady testing device the most according to claim 4, it is characterised in that: be provided with at intermediate active bearing (9) place control postbrachium (12) inwardly tighten up tighten up torsion spring.
Ultrasonic sensor steady testing device the most according to claim 4, it is characterized in that: the two ends of live bearing (9) are connected with the upper end of lifting connecting rod (15), the lower end of lifting connecting rod (15) puts in firm banking (10), the lower end of lifting connecting rod (15) is provided with and prevents from lifting the dop that connecting rod (15) is extracted out in firm banking (10), and lifting connecting rod (15) is the component that can lift relative to firm banking (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610307927.9A CN105842593B (en) | 2016-05-11 | 2016-05-11 | Ultrasonic sensor steady testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610307927.9A CN105842593B (en) | 2016-05-11 | 2016-05-11 | Ultrasonic sensor steady testing device |
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| Publication Number | Publication Date |
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| CN105842593A true CN105842593A (en) | 2016-08-10 |
| CN105842593B CN105842593B (en) | 2019-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610307927.9A Active CN105842593B (en) | 2016-05-11 | 2016-05-11 | Ultrasonic sensor steady testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106645427A (en) * | 2016-12-16 | 2017-05-10 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Ultrasonic sensor component with protective function and measuring rod used thereby |
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| JP2004061358A (en) * | 2002-07-30 | 2004-02-26 | Kawatetsu Advantech Co Ltd | Detection method and system for partial discharge in insulator of power apparatus |
| CN201254211Y (en) * | 2008-09-05 | 2009-06-10 | 卢灿光 | Fixed structure of rotary angle sensor |
| CN202660180U (en) * | 2012-07-25 | 2013-01-09 | 安徽工业大学 | Conveniently-detached multi-section household universal bracket |
| CN103969474A (en) * | 2014-05-16 | 2014-08-06 | 国网上海市电力公司 | Multifunctional fast GIS partial discharge measuring sensor fixing device |
| CN203825044U (en) * | 2014-04-17 | 2014-09-10 | 国家电网公司 | Sensor stabilizing device |
| CN205049614U (en) * | 2015-10-17 | 2016-02-24 | 广西电网有限责任公司桂林供电局 | Fixing device of GIS partial discharge ultrasonic wave and superfrequency detection sensor |
| CN205157712U (en) * | 2015-10-20 | 2016-04-13 | 国网青海省电力公司检修公司 | Insulating telescopic link detection device is put in combined electrical apparatus office |
| CN205880125U (en) * | 2016-05-11 | 2017-01-11 | 国家电网公司 | Ultrasonic sensor stabilizes testing arrangement |
-
2016
- 2016-05-11 CN CN201610307927.9A patent/CN105842593B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004061358A (en) * | 2002-07-30 | 2004-02-26 | Kawatetsu Advantech Co Ltd | Detection method and system for partial discharge in insulator of power apparatus |
| CN201254211Y (en) * | 2008-09-05 | 2009-06-10 | 卢灿光 | Fixed structure of rotary angle sensor |
| CN202660180U (en) * | 2012-07-25 | 2013-01-09 | 安徽工业大学 | Conveniently-detached multi-section household universal bracket |
| CN203825044U (en) * | 2014-04-17 | 2014-09-10 | 国家电网公司 | Sensor stabilizing device |
| CN103969474A (en) * | 2014-05-16 | 2014-08-06 | 国网上海市电力公司 | Multifunctional fast GIS partial discharge measuring sensor fixing device |
| CN205049614U (en) * | 2015-10-17 | 2016-02-24 | 广西电网有限责任公司桂林供电局 | Fixing device of GIS partial discharge ultrasonic wave and superfrequency detection sensor |
| CN205157712U (en) * | 2015-10-20 | 2016-04-13 | 国网青海省电力公司检修公司 | Insulating telescopic link detection device is put in combined electrical apparatus office |
| CN205880125U (en) * | 2016-05-11 | 2017-01-11 | 国家电网公司 | Ultrasonic sensor stabilizes testing arrangement |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106645427A (en) * | 2016-12-16 | 2017-05-10 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Ultrasonic sensor component with protective function and measuring rod used thereby |
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| CN105842593B (en) | 2019-02-15 |
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