CN207689575U - A kind of surface resistivity measuring device of GIS disc insulators - Google Patents
A kind of surface resistivity measuring device of GIS disc insulators Download PDFInfo
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- CN207689575U CN207689575U CN201721583120.4U CN201721583120U CN207689575U CN 207689575 U CN207689575 U CN 207689575U CN 201721583120 U CN201721583120 U CN 201721583120U CN 207689575 U CN207689575 U CN 207689575U
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- annular electrode
- dead ring
- electrode
- protection
- measured
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Abstract
The utility model provides a kind of surface resistivity measuring device of GIS disc insulators, including：Support platform, insulating plate, two CCD camera measure system and Current Voltage test circuit；It is provided in support platform for the fixed support column for supporting test specimen to be measured；Insulating plate be provided be used to support axis by supporting shaft hole, insulating plate connect by the support shaft with test specimen to be measured；The groove for fixing dead ring is offered on insulating plate；Dead ring includes the first dead ring and the second dead ring；The bottom of first dead ring is connected with protection annular electrode；The bottom of second dead ring is connected with by protection annular electrode；Protection annular electrode is connect with test specimen to be measured；It is connect with test specimen to be measured by protection annular electrode；It protects annular electrode and is spaced pre-determined distance between protection annular electrode；Two CCD camera measure system is for measuring pre-determined distance；The access of Current Voltage test circuit protects annular electrode and by between protection annular electrode.
Description
Technical field
The utility model is related to insulator fields of measurement more particularly to a kind of surface resistivity of GIS disc insulators to survey
Measure device.
Background technology
Over more than 30 years, what gas-insulated switch (GIS, Gas-Insulated Switchgear) had shown height can
By property, this high reliability is attributed to the fact that the encapsulation of each component and application and the epoxy resin of superior isolation material (such as SF6)
The disc insulator of filling.
In GIS dielectric breakdown accidents, most of is the surface breakdown of disc insulator.Removing is led due to working long hours
Cause the factor of material aging, the main reason for surface breakdown be due to being concentrated the most in the field strength along face electric field, secondly because
After being contaminated due to disc insulator surface, the further concentration of the reduction of sheet resistance and the field strength along face electric field,
Therefore the testing and diagnosing of the insulation performance of GIS disc insulators seems particularly significant.
Traditional insulation stress levels estimate the stress levels experiment needed to do repeatedly, if but can measure to obtain benzvalene form exhausted
The surface resistivity of edge, it will be able to the soon insulation characterisitic of judgement material, and conventional surface resistance meter can only measure
The surface resistivity of planar materials can not simply measure the surface resistivity of disc insulator, exist and not apply
In disc insulator surface resistivity measure device the technical issues of.
Utility model content
The utility model provides a kind of surface resistivity measuring device of GIS disc insulators, solves conventional surface
Resistance meter can not simply measure the surface resistivity of disc insulator, exist and be not applied to disc insulator
Surface resistivity measure device the technical issues of.
The utility model provides a kind of surface resistivity measuring device of GIS disc insulators, including：
Support platform, insulating plate, two CCD camera measure system and Current Voltage test circuit；
It is provided in the support platform for the fixed support column for supporting test specimen to be measured；
The insulating plate be provided be used to support axis by supporting shaft hole, the insulating plate passes through the support shaft
It is connect with the test specimen to be measured；
The groove for fixing dead ring is offered on the insulating plate；
The dead ring includes the first dead ring and the second dead ring；
The bottom of first dead ring is connected with protection annular electrode；
The bottom of second dead ring is connected with by protection annular electrode；
The protection annular electrode is connect with the test specimen to be measured；
It is described to be connect with the test specimen to be measured by protection annular electrode；
It is spaced pre-determined distance between the protection annular electrode and the annular electrode by protection；
The two CCD camera measure system is for measuring the pre-determined distance；
The Current Voltage test circuit accesses between the protection annular electrode and the annular electrode by protection.
Preferably, the protection annular electrode includes the first backing electrode and first annular conductive rubber；
First backing electrode is connect with the bottom of first dead ring；
First annular conductive rubber is tightly attached to the surface of the test specimen to be measured.
Preferably, described include the second backing electrode and the second ring shaped conductive rubber by protection annular electrode；
Second backing electrode is connect with the bottom of second dead ring；
Second ring shaped conductive rubber is tightly attached to the surface of the test specimen to be measured.
Preferably, the Current Voltage test circuit include high direct voltage test power supply, test voltage control switch and
Galvanometer；
The protection annular electrode, the galvanometer, high direct voltage test power supply, test voltage control switch
It is sequentially connected in series by protection annular electrode with described.
Preferably, the support shaft is rotatable support shaft, and the surface of the support shaft is equipped with scale.
Preferably, the quantity of the supporting shaft hole is consistent with the quantity of connecting hole of test specimen to be measured.
Preferably, the projection portion with the matching grooves of the insulating plate is provided on the dead ring, it is described exhausted
Edge ring is fixedly connected by the projection portion with the insulating plate.
Preferably, first backing electrode is closed annular structure.
Preferably, second backing electrode is closed annular structure.
As can be seen from the above technical solutions, the utility model embodiment has the following advantages：
The utility model provides a kind of surface resistivity measuring device of GIS disc insulators, including：Support platform,
Insulating plate, two CCD camera measure system and Current Voltage test circuit；It is provided in the support platform for fixed support
The support column of test specimen to be measured；The insulating plate be provided be used to support axis by supporting shaft hole, the insulating plate passes through
The support shaft is connect with the test specimen to be measured；The groove for fixing dead ring is offered on the insulating plate；It is described exhausted
Edge ring includes the first dead ring and the second dead ring；The bottom of first dead ring is connected with protection annular electrode；Described
The bottom of two dead rings is connected with by protection annular electrode；The protection annular electrode is connect with the test specimen to be measured；The quilt
Protection annular electrode is connect with the test specimen to be measured；It is spaced between the protection annular electrode and the annular electrode by protection pre-
If distance；The two CCD camera measure system is for measuring the pre-determined distance；Described in the Current Voltage test circuit access
It protects between annular electrode and the annular electrode by protection.
In the utility model, test specimen to be measured is fixedly installed between support platform and insulating plate, then pass through protection ring
Shape electrode, the surface that test block is treated by protection annular electrode and Current Voltage test circuit are powered and obtain corresponding electricity
Voltage value is flowed, protection annular electrode is obtained by two CCD camera measure system and by the pre-determined distance between protection annular electrode,
Protection annular electrode is finally calculated and by the surface resistivity between protection annular electrode, solves the survey of conventional surface resistance
Examination instrument can not simply measure the surface resistivity of disc insulator, there is the surface for being not applied to disc insulator
The technical issues of device of resistivity measurement.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is a kind of master of the surface resistivity measuring device for GIS disc insulators that the utility model embodiment provides
View；
Fig. 2 is a kind of bowing for the surface resistivity measuring device for GIS disc insulators that the utility model embodiment provides
View；
Fig. 3 is the structural schematic diagram of insulating plate in Fig. 1；
Fig. 4 is the structural schematic diagram of dead ring in Fig. 1；
Fig. 5 is the circuit diagram of voltage and current measurement circuit in Fig. 1；
Fig. 6 is the operation principle flow chart of two CCD camera measure system in Fig. 1；
Fig. 7 is grating project schematic diagram；
Wherein, reference numeral is：
1, support platform；2, insulating plate；3, test specimen to be measured；4, support column；5, support shaft；6, dead ring；7, it is protected
Annular electrode；8, annular electrode is protected；10, supporting shaft hole.
Specific implementation mode
The utility model embodiment provides a kind of surface resistivity measuring device of GIS disc insulators, solves too
Sun can generate electricity, and and power low there are efficiency is small, and pressure energy power generation has intermittent obvious technical problem.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
It please refers to Fig.1 to Fig.3, a kind of surface resistivity for GIS disc insulators that the utility model embodiment provides is surveyed
Measure the structural schematic diagram of device.
A kind of structural representation of the surface resistivity measuring device for GIS disc insulators that the utility model embodiment provides
Figure, including：
Support platform 1, insulating plate 2 and Current Voltage test circuit；
It is provided in support platform 1 for the fixed support column 4 for supporting test specimen 3 to be measured；
Insulating plate 2 be provided be used to support axis 5 by supporting shaft hole 10, insulating plate 2 by support shaft 5 with it is to be measured
Test specimen 3 connects；
The groove for fixing dead ring 6 is offered on insulating plate 2；
Dead ring 6 includes the first dead ring and the second dead ring；
The bottom of first dead ring is connected with protection annular electrode 8；
The bottom of second dead ring is connected with by protection annular electrode 7；
Protection annular electrode 8 is connect with test specimen 3 to be measured；
It is connect with test specimen 3 to be measured by protection annular electrode 7；
It protects annular electrode 8 and is spaced pre-determined distance between protection annular electrode 7；
Two CCD camera measure system is for measuring pre-determined distance；
The access of Current Voltage test circuit protects annular electrode 8 and by between protection annular electrode 7.
It should be noted that test specimen 3 to be measured is the generally irregular body of disc insulator, it is through the part of connection
Conductor part, rest part is the mixing material of epoxy resin and aluminium oxide, exhausted in order to match each different types of benzvalene form
Edge selects the quantity of support column 4 and support shaft 5 and the position of its setting, does not limit herein as needed.
In the utility model embodiment, test specimen 3 to be measured is fixedly installed between support platform 1 and insulating plate 2, then
The surface that test block 3 is treated by protection annular electrode 8, by protection annular electrode 7 and Current Voltage test circuit is powered
And corresponding Current Voltage value is obtained, protection annular electrode 8 is obtained by two CCD camera measure system and by protection annular electrode 7
Between pre-determined distance, protection annular electrode 8 is finally calculated and by the surface resistivity between protection annular electrode 7, solution
Conventional surface of having determined resistance meter can not simply measure the surface resistivity of disc insulator, exist and do not apply
In disc insulator surface resistivity measure device the technical issues of.
Further, protection annular electrode 8 includes the first backing electrode and first annular conductive rubber；
First backing electrode is connect with the bottom of the first dead ring；
First annular conductive rubber is tightly attached to the surface of test specimen 3 to be measured.
It should be noted that according to GB/T1410 standards, to the selection of annular electrode require be cannot because of electrode resistance or
The conductive material that large error is introduced due to the pollution to sample, in order to reach standard, selection uses conductive rubber and corresponding ruler
The backing electrode of very little shape is combined as protection annular electrode, and conductive rubber will not only damage the surface of disc insulator, but also hold
Easy cleaning, and the aggregation of pollutant is not will produce during cleaning, backing electrode will generate conductive rubber certain pressure,
Enable conductive rubber smoothly conductive.Since this body structure of disc insulator is generally circular, guard electrode is first
Protection annular electrode 8 is made in consideration, and correspondingly-shaped also has the first backing electrode and first annular conductive rubber.
Further, include the second backing electrode and the second ring shaped conductive rubber by protection annular electrode 7；
Second backing electrode is connect with the bottom of the second dead ring；
Second ring shaped conductive rubber is tightly attached to the surface of test specimen 3 to be measured.
It should be noted that same, according to GB/T1410 standards, the selection requirement to annular electrode is cannot be because of electrode electricity
Resistance introduces the conductive material of large error due to the pollution to sample, and in order to reach standard, selection uses conductive rubber and right
The backing electrode of size shape is answered to be combined as being protected annular electrode, backing electrode that will generate conductive rubber certain pressure
Power so that conductive rubber can be smoothly conductive.Since this body structure of disc insulator is generally circular, by guard electrode
Consider to be made first by protection annular electrode 7, correspondingly-shaped also has the second backing electrode and the second ring shaped conductive rubber.
Further, Current Voltage test circuit includes high direct voltage test power supply, test voltage control switch and electric current
Meter；
Annular electrode 8, galvanometer, high direct voltage test power supply, test voltage control is protected to switch and by protection annular electro
Pole 7 is sequentially connected in series.
It should be noted that referring to Fig. 5, provide voltage by high direct voltage test voltage for test circuit, pass through electricity
Flowmeter obtains the current value of measuring circuit, and test voltage control switch can control whether test circuit accesses, according to preset
Calculation formula can calculate protection annular electrode 8 and by the surface resistivity between protection annular electrode 7.
Wherein, in the utility model embodiment, galvanometer uses Keithley 6517B electrometers, and it is minimum to measure electric current
1fA-20mA can be surveyed, insulating surface resistivity can measure to 1016Ω magnitudes.
Further, support shaft 5 is rotatable support shaft, and the surface of support shaft is equipped with scale.
It should be noted that support shaft 5 is rotatable support shaft, the height and position of insulating plate 2 can be adjusted, to adjust
The position of the whole dead ring 6 being fixedly connected with insulating plate 2, can replace the test position for treating test block 3.
Further, the quantity of supporting shaft hole 10 is consistent with the quantity of connecting hole of test specimen 3 to be measured.
It should be noted that the quantity of supporting shaft hole 10 is consistent with the quantity of connecting hole of test specimen 3 to be measured, for different
Disc insulator needs the supporting shaft hole 10 that different number is arranged.
Further, the projection portion with the matching grooves of insulating plate 2 is provided on dead ring 6, dead ring 6 is by convex
Part is played to be fixedly connected with insulating plate 2.
Referring to Fig. 4, there is projection portion on dead ring 6, and with the matching grooves of insulating plate 2, dead ring 6 passes through protrusion
Part is fixedly connected with insulating plate 2.
Further, the first backing electrode is closed annular structure.
Further, the second backing electrode is closed annular structure.
It should be noted that the backing electrode of closed annular structure, can adjust the pressure to conductive rubber by contraction,
That is adhesive force of the conductive rubber on disc insulator surface.
It is to a kind of embodiment of the surface resistivity measuring device of GIS disc insulators provided by the utility model above
The explanation of progress, below will be to the one of a kind of surface resistivity measuring device of GIS disc insulators provided by the utility model
A application examples illustrates.
Fig. 6 to Fig. 7 is please referred to, the utility model provides a kind of surface resistivity measuring device of GIS disc insulators
An application examples.
In the utility model embodiment, two CCD camera measure system is to the curved mask bulk measurements of GIS disc insulators, in base
In the two CCD camera measure system of projection grating method, grating pattern is projected into insulator surface, grating first with projecting apparatus
Pattern is modulated by insulator surface contour shape and the deformed grating image of formation.Later, it is relatively fixed using two positions
Video camera the measured object is shot, obtain deformed grating image.Left and right cameras is obtained by solid matching method again
Corresponding matching point.Finally, the three dimensional type face for restoring object according to binocular stereo vision principle of parallax passes through the subsurface that insulate
3-d recovery figure intercepts the plane where electrode, can obtain electrode points position coordinates, calculates two interelectrode arc length s.
It needs first to carry out inside and outside ginseng calibration to system when measurement, the relative position of camera is kept not after the completion of system calibration
Become.If video camera relative position changes, the outer ginseng that system calibrating goes out just is changed, and leads to 3-d recovery result not
Accurately.Do not require optical projection system, camera system and measured object according to tight in the binocular three-dimensional measuring system based on projection grating method
The relative position of lattice is installed, and the position of camera system can be adjusted flexibly according to in-site measurement needs.Wherein camera system packet
Two video cameras are included, the two video cameras relative position after calibration is immutable.
The above, above example are only to illustrate the technical solution of the utility model, rather than its limitations；Although ginseng
The utility model is described in detail according to previous embodiment, it will be understood by those of ordinary skill in the art that：It is still
Can be with technical scheme described in the above embodiments is modified, or which part technical characteristic is equally replaced
It changes；And these modifications or replacements, various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
Spirit and scope.
Claims (9)
1. a kind of surface resistivity measuring device of GIS disc insulators, which is characterized in that including：
Support platform, insulating plate, two CCD camera measure system and Current Voltage test circuit；
It is provided in the support platform for the fixed support column for supporting test specimen to be measured；
The insulating plate be provided be used to support axis by supporting shaft hole, the insulating plate passes through the support shaft and institute
State test specimen connection to be measured；
The groove for fixing dead ring is offered on the insulating plate；
The dead ring includes the first dead ring and the second dead ring；
The bottom of first dead ring is connected with protection annular electrode；
The bottom of second dead ring is connected with by protection annular electrode；
The protection annular electrode is connect with the test specimen to be measured；
It is described to be connect with the test specimen to be measured by protection annular electrode；
It is spaced pre-determined distance between the protection annular electrode and the annular electrode by protection；
The two CCD camera measure system is for measuring the pre-determined distance；
The Current Voltage test circuit accesses between the protection annular electrode and the annular electrode by protection.
2. the surface resistivity measuring device of GIS disc insulators according to claim 1, which is characterized in that the guarantor
It includes the first backing electrode and first annular conductive rubber to protect annular electrode；
First backing electrode is connect with the bottom of first dead ring；
First annular conductive rubber is tightly attached to the surface of the test specimen to be measured.
3. the surface resistivity measuring device of GIS disc insulators according to claim 1, which is characterized in that the quilt
It includes the second backing electrode and the second ring shaped conductive rubber to protect annular electrode；
Second backing electrode is connect with the bottom of second dead ring；
Second ring shaped conductive rubber is tightly attached to the surface of the test specimen to be measured.
4. the surface resistivity measuring device of GIS disc insulators according to claim 1, which is characterized in that the electricity
Stream circuit for testing voltage includes high direct voltage test power supply, test voltage control switch and galvanometer；
The protection annular electrode, the galvanometer, high direct voltage test power supply, test voltage control switch and institute
It states and is sequentially connected in series by protection annular electrode.
5. the surface resistivity measuring device of GIS disc insulators according to claim 1, which is characterized in that the branch
Support axis is rotatable support shaft, and the surface of the support shaft is equipped with scale.
6. the surface resistivity measuring device of GIS disc insulators according to claim 4, which is characterized in that the branch
The quantity for supportting axis hole is consistent with the quantity of connecting hole of test specimen to be measured.
7. the surface resistivity measuring device of GIS disc insulators according to claim 1, which is characterized in that described exhausted
The projection portion with the matching grooves of the insulating plate is provided on edge ring, the dead ring passes through the projection portion and institute
Insulating plate is stated to be fixedly connected.
8. the surface resistivity measuring device of GIS disc insulators according to claim 2, which is characterized in that described
One backing electrode is closed annular structure.
9. the surface resistivity measuring device of GIS disc insulators according to claim 3, which is characterized in that described
Two backing electrodes are closed annular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721583120.4U CN207689575U (en) | 2017-11-23 | 2017-11-23 | A kind of surface resistivity measuring device of GIS disc insulators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721583120.4U CN207689575U (en) | 2017-11-23 | 2017-11-23 | A kind of surface resistivity measuring device of GIS disc insulators |
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| Publication Number | Publication Date |
|---|---|
| CN207689575U true CN207689575U (en) | 2018-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721583120.4U Withdrawn - After Issue CN207689575U (en) | 2017-11-23 | 2017-11-23 | A kind of surface resistivity measuring device of GIS disc insulators |
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| CN (1) | CN207689575U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107796988A (en) * | 2017-11-23 | 2018-03-13 | 广东电网有限责任公司电力科学研究院 | The surface resistivity measurement apparatus and method of a kind of GIS disc insulators |
-
2017
- 2017-11-23 CN CN201721583120.4U patent/CN207689575U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107796988A (en) * | 2017-11-23 | 2018-03-13 | 广东电网有限责任公司电力科学研究院 | The surface resistivity measurement apparatus and method of a kind of GIS disc insulators |
| CN107796988B (en) * | 2017-11-23 | 2023-05-16 | 广东电网有限责任公司电力科学研究院 | Surface resistivity measuring device and method for GIS basin-type insulator |
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Granted publication date: 20180803 Effective date of abandoning: 20230516 |
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| AV01 | Patent right actively abandoned |
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