CN207007996U - Compound sensor for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect - Google Patents
Compound sensor for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect Download PDFInfo
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- CN207007996U CN207007996U CN201720812577.1U CN201720812577U CN207007996U CN 207007996 U CN207007996 U CN 207007996U CN 201720812577 U CN201720812577 U CN 201720812577U CN 207007996 U CN207007996 U CN 207007996U
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Abstract
The utility model discloses a kind of compound sensor for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect, including：Cover plate, there is first end face and second end face on its axial direction；Extra-high video sensor, it is in the second end face；Fluorescence optical fiber, its coiled coil located at the extra-high video sensor end face where plane in；Superfrequency sensor connector, it is connected in the first end face with the extra-high video sensor；Fibre-optical splice, it is connected in the first end face with the fluorescence optical fiber.Compound sensor described in the utility model both has extra-high video sensor, is provided with fluorescence optical fiber again, possesses while detects ultrahigh-frequency signal and the ability of optical signal, and detection sensitivity is high, testing result good reliability.
Description
Technical field
Sensor is the utility model is related to, particularly for the sensor of gas-insulating and fully-enclosed combined electrical apparatus detection.
Background technology
With the continuous development of national economy and being continuously increased for China's power system scale, to the security of operation of power networks
Increasingly improved with reliability requirement.The safe operation of power network, the safe operation of high-tension electricity equipment is depended primarily on, and electric power is set
Standby operational reliability be largely dependent upon power equipment manufacture and installation quality and equipment operation maintenance and
Necessary precaution experiment etc..
For gas-insulated switchgear (GIS) because its reliability is high, it is excellent that floor space is small, maintenances is simple, the time between overhauls(TBO) is grown etc.
Put and be widely used in power network.Research shows, some in GIS device design, manufacture, transport, installation process
Accidentalia can cause some congenital local defects, such as bubble, crack, levitated conductive particle and burr.These defect meetings
Cause GIS device some regions electric-field intensity too high, shelf depreciation will occur when higher than the disruptive field intensity of dielectric.Office
Portion's electric discharge is both to characterize the characteristic quantity of GIS device insulation status, is the main reason for causing insulation degradation again.Pass through shelf depreciation
Detection, insulation defect existing for inside GIS device can be found in time, avoid equipment that sudden dielectric breakdown accident occurs, this is right
Ensure that the safe and stable operation tool of GIS device and power network is of great significance.
Detection method for local discharge is broadly divided into pulse current method, supercritical ultrasonics technology, chemical measure, superfrequency method and light
Learn five kinds of detection method.Optical detection is that to judge equipment, whether there occurs office by detecting the luminescence phenomenon inside power equipment
Discharge in portion.When shelf depreciation occurs for GIS device, various ionization, excite and the compound radiation for being accompanied by light, luminous and part
One feature of electric discharge.Relatively currently used superfrequency and ultrasonic detection method, optical detection are used to detect GIS device
There are some obvious advantages during internal partial discharge：1) due to detection it is luminescence phenomenon, is not disturbed by electromagnetic environment, vibration equipment class
The influence of interference, there is excellent interference free performance；2) because GIS device is totally enclosed structure, do not deposited inside GIS device
In outside jamming light source, the validity of optical detection result can be further improved.In addition, from the point of view of Cleaning Principle, optical detection
Method has the detection sensitivity better than other methods such as superfrequencies in itself, thus, with the fast development of optical sensing technology, base
There is good development and application prospect in optical GIS partial discharge detections technology, be that following one, partial discharge detection field is important
Research direction.
In existing detection technique, superfrequency method detection range is most wide, and optical method interference free performance is most strong, and reliability is most
Height, if two kinds of detection techniques combined, it will the reliability of detection efficiency and testing result is greatly improved, but will
The problem of two kinds of detection techniques combine, and the key issue for first having to solve is extra-high video sensor and optical sensor.
Utility model content
The purpose of this utility model is to provide a kind of answering for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
Sensor is closed, the compound sensor both can carry out superfrequency method detection to shelf depreciation, can carry out optical detection again, two kinds
Detection method can be carried out simultaneously, can also be separated and be carried out, so as to improve the detection model for the detection technique for using the sensor
Enclose and reliability.
Based on above-mentioned purpose, the utility model provides a kind of for the inspection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
The compound sensor of survey, including：
Cover plate, there is first end face and second end face on its axial direction；
Extra-high video sensor, it is in the second end face；
Fluorescence optical fiber, its coiled coil located at the extra-high video sensor end face where plane in；
Superfrequency sensor connector, it is connected in the first end face with the extra-high video sensor；
Fibre-optical splice, it is connected in the first end face with the fluorescence optical fiber.
Working condition when being connected with reference to compound sensor described in the utility model with test equipment is to the utility model
The operation principle of described compound sensor is further elaborated：
During work, superfrequency tactility apparatus joint is connected with extra-high video sensor, senses electromagnetic wave letter caused by shelf depreciation
Number superfrequency detection is carried out, while fibre-optical splice is connected with fluorescence optical fiber, by fluorescence optical fiber progress optical detection, so that
Superfrequency detection can be carried out simultaneously with optical detection.
Further, since compound sensor described in the utility model is located at high frequency sensors using fluorescence optical fiber coiled coil
End face where plane in, thus, sensitive volume is wide, and Detection results are good, high sensitivity.
Further, in compound sensor described in the utility model, the extra-high video sensor includes：
The antenna of round metal plate-like, screwed hole of centre is provided with the center of the antenna；
Connecting column, it is embedded in the screwed hole of centre, and the connecting column is connected with extra-high video sensor；
Several shorting pins, its circumference along the antenna are uniformly distributed, and one end and the antenna of the shorting pin connect
Connect, its other end is connected with cover plate；
Dielectric layer, it is wrapped in the periphery of the antenna.
In such scheme, connecting column is using the good material of electric conductivity, such as copper.
In some other embodiments, seal groove is provided with screwed hole of centre, is used in seal groove provided with sealing ring
Prevent gas from the junction internal leakage of superfrequency sensor connector.
Further, in compound sensor described in the utility model, the second end face of the dielectric layer and cover plate connects
Tactile face is provided with the first seal groove of annular, and sealing ring is provided with first seal groove.Described in the utility model multiple
Close in sensor, it is to improve the sealing of described compound sensor, prevent gas-insulated to set seal groove and sealing ring
Gas leakage inside switchgear comes out, so as to influence the testing result of compound sensor.
Further, in compound sensor described in the utility model, the dielectric layer is epoxy resin medium layer.
Further, in compound sensor described in the utility model, the superfrequency sensor connector connects for N-type
Head, the N connector are connected with superfrequency sensor threads.
Further, in compound sensor described in the utility model, offered on the axial end of the dielectric layer
Helicla flute, the fluorescence optical fiber in the helicla flute so that its coiled coil be located at the end face institute of the extra-high video sensor
Plane in.
In such scheme, dielectric layer further functions as the effect of further fixed fluorescence optical fiber, in addition, using fluorescence optical fiber
Be advantageous to save space in helicla flute, reduce compound sensor volume, improve the portability of compound sensor.
Further, in compound sensor described in the utility model, the cover plate is rosette cover plate.
Further, in compound sensor described in the utility model, offered on the cover plate along its circumferential direction
Several through holes set, the through hole are used to set the connector that cover plate is connected with measurement equipment to be checked.
Further, in compound sensor described in the utility model, the second end face of the cover plate is provided with second
Seal groove, second seal groove are located at the periphery of extra-high video sensor.
Further, in compound sensor described in the utility model, second seal groove is at least provided with two.
Composite sensing utensil described in the utility model for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
Have the advantage that：
(1) compound sensor described in the utility model both has extra-high video sensor, is provided with fluorescence optical fiber again, possesses same
When detect the ability of ultrahigh-frequency signal and optical signal, and detection sensitivity is high, testing result good reliability；
(2) compound sensor described in the utility model uses integrated structure design, thus its small volume, is easy to and gas
Body insulated switching installation flange plate integrates, so as to be directly installed on gas-insulated switchgear flange, no
Change gas-insulated switchgear original structure and internal electric field distribution；
(3) compound sensor described in the utility model has a multi-sealed design, and sealing property is excellent.
Further, since compound sensor described in the utility model is located at high frequency sensors using fluorescence optical fiber coiled coil
End face where plane in, thus, sensitive volume is wide, and Detection results are good, high sensitivity.
Brief description of the drawings
Fig. 1 is the composite sensing described in the utility model for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
A kind of overall structure diagram of the device under embodiment.
Fig. 2 is the composite sensing described in the utility model for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
Overall structure diagram under a kind of another visual angle of the device under embodiment.
Fig. 3 is the composite sensing described in the utility model for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
A kind of fluorescence optical fiber of the device under embodiment is arranged on the schematic diagram of extra-high video sensor.
Fig. 4 is the composite sensing described in the utility model for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
A kind of fluorescence optical fiber of the device under embodiment is arranged on the schematic diagram under another visual angle of extra-high video sensor.
Fig. 5 is the composite sensing described in the utility model for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
A kind of fluorescence optical fiber of the device under embodiment installed in extra-high video sensor splitted along center line after internal structure schematic diagram.
Fig. 6 is the composite sensing described in the utility model for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
A kind of structural representation of superfrequency sensor connector of the device under embodiment.
Fig. 7 is the composite sensing described in the utility model for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
A kind of structural representation of fibre-optical splice of the device under embodiment.
Fig. 8 is the composite sensing described in the utility model for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
A kind of structural representation of cover plate of the device under embodiment.
Fig. 9 is the composite sensing described in the utility model for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
A kind of structural representation of cover plate of the device under embodiment under another visual angle.
Embodiment
Technical scheme described in the utility model is further illustrated with reference to Figure of description and embodiment.
Fig. 1 is the composite sensing described in the utility model for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
A kind of overall structure diagram of the device under embodiment.Fig. 2 is used for gas-insulating and fully-enclosed group to be described in the utility model
Close the overall structure diagram under a kind of another visual angle of the compound sensor of electrical apparatus insulation defects detection under embodiment.
As shown in figure 1, simultaneously combining Fig. 2 when necessary, it is used for gas-insulating and fully-enclosed combined electrical apparatus in present embodiment
The compound sensor of insulation defect detection includes：Cover plate 20, there is first end face I and second end face II on its axial direction；It is special
High frequency sensors 10, it is on second end face II；Superfrequency sensor connector 40, its on the first end face I, and with it is extra-high
Video sensor 10 connects；Fibre-optical splice 50, it is also on first end face I, and be connected with fluorescence optical fiber 30.
Understood with reference to figure 2, extra-high video sensor 10, the helical disk of fluorescence optical fiber 30 are provided with the second end face II of cover plate 20
Around ground in the plane where the end face of extra-high video sensor 10.
Fig. 3 is the composite sensing described in the utility model for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
A kind of fluorescence optical fiber of the device under embodiment is arranged on the schematic diagram of extra-high video sensor.Fig. 4 is described in the utility model
Fluorescence optical fiber of the compound sensor under a kind of embodiment for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
Schematic diagram under another visual angle of extra-high video sensor.Fig. 5 is sealed entirely to be described in the utility model for gas-insulated
A kind of fluorescence optical fiber of the compound sensor of combined electrical apparatus insulation defect detection under embodiment is closed to sense installed in superfrequency
Device splits rear internal structure schematic diagram along center line.
With reference to Fig. 3 to Fig. 5, to the company of fluorescence optical fiber in compound sensor described in the utility model and extra-high video sensor
The structure for connecing mode and extra-high video sensor is described further.
As shown in figure 5, simultaneously combining Fig. 3 to Fig. 4 when necessary, extra-high video sensor 10 includes：The antenna of round metal plate-like
101, screwed hole of centre 103 is provided with the center of antenna 101；Connecting column 102, it is embedded in screwed hole of centre 103, connecting column
102 are connected with extra-high video sensor 10, and the tail end of connecting column is internal thread 106, for connecting superfrequency sensor connector 40；If
Dry shorting pin 104, its circumference along antenna 101 are uniformly distributed, and one end of shorting pin 104 is connected with antenna 101, and its is another
One end is connected with cover plate；Dielectric layer 105, it is wrapped in the periphery of antenna 101.
With further reference to Fig. 5 as can be seen that offering helicla flute 62 on the axial end of dielectric layer 105, fluorescence optical fiber 30
In the helicla flute 62 so that its coiled coil in the plane where the end face of extra-high video sensor 10.
In addition, it can be seen that the helicla flute that the one end of fluorescence optical fiber 30 is embedded at extra-high video sensor 10 with reference to Fig. 3 and Fig. 4
In 62, fluorescence optical fiber coiled coil in the plane where the end face of extra-high video sensor, the other end is kept pouring in through extra-high
Sensor 10 protrudes from extra-high video sensor outer end, and is connected with fibre-optical splice (not shown).
With further reference to Fig. 3 as can be seen that the face that dielectric layer contacts II with the second end face of cover plate is provided with the of annular
One seal groove 61, sealing ring is provided with the first seal groove 61.
It should be noted that in the present embodiment, dielectric layer 105 is epoxy resin medium layer, fluorescence optical fiber passes through ring
Oxygen tree fat is further secured to extra-high video sensor；Connecting column 102 is using the good material of electric conductivity, such as copper.
In some other embodiments, seal groove is provided with screwed hole of centre 103, being provided with sealing ring in seal groove uses
In preventing gas from the junction internal leakage with superfrequency sensor connector 40.
Fig. 6 is the composite sensing described in the utility model for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
A kind of structural representation of superfrequency sensor connector of the device under embodiment.
As shown in fig. 6, the superfrequency sensor connector 40 in present embodiment is N connector, extra-high video sensor 40 is logical
Cross fixed plate 401 to be connected with cover plate, fixed plate 401 is provided with the first connecting hole, and for inserting screw, extra-high video sensor is connect
First 40 are fixed on cover plate.Joint 40 also has external screw thread 402, for realizing spiral shell with the internal thread 106 in extra-high video sensor
Line connects.
Fig. 7 is the composite sensing described in the utility model for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
A kind of structural representation of fibre-optical splice of the device under embodiment.
As shown in fig. 7, one end of the fibre-optical splice 50 in present embodiment has screw thread 501, it is used for and optical signal detecting
Equipment connects；The other end of fibre-optical splice 50 is rectangular shape end 504, for fibre-optical splice 50 to be fixed on into cover plate.This
Outside, through hole 502 centered on the center of fibre-optical splice, for inserting fluorescence optical fiber.
With further reference to Fig. 7 as can be seen that fibre-optical splice has two jags at the screw thread 501, on jag
Provided with the second connecting hole 503, for inserting the connection of screw reinforcing fibre-optical splice and cover plate.
Fig. 8 is the composite sensing described in the utility model for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect
A kind of structural representation of cover plate of the device under embodiment.Fig. 9 is to be described in the utility model for gas-insulating and fully-enclosed
A kind of cover plate structural representation under another visual angle of the compound sensor of combined electrical apparatus insulation defect detection under embodiment
Figure.
As shown in figure 8, simultaneously combining Fig. 9 when necessary, cover plate 20 is rosette cover plate, is offered on cover plate 20 along its week
Several through holes 201 set to direction, through hole 201 are used to set the connector that cover plate 20 is connected with measurement equipment to be checked.
With further reference to Fig. 8 as can be seen that the first hole III is provided with cover plate first end face I, for being kept pouring in extra-high
Sensor joint connects.In addition, the second hole IV is additionally provided with cover plate first end face I, for being connected with fibre-optical splice.
It should be noted that in the present embodiment, the first hole III peripheries circumference is provided with screwed hole, for phase
Corresponding screw is threadedly coupled, and reinforces the connection with superfrequency sensor connector.In addition, spiral shell is provided with around the second hole IV
Pit, it is also used for being threadedly coupled with corresponding screw, reinforces the connection with fibre-optical splice.
As shown in figure 9, the second end face II of cover plate 20 is provided with the second seal groove 63, the second seal groove 63 is located at superfrequency
The periphery of sensor.In the present embodiment, the second seal groove 63 is provided with two, for preventing gas from leaking, ensures detection knot
The reliability of fruit.The 3rd hole V in Fig. 9, for being connected with extra-high video sensor.
With reference to Fig. 1 to Fig. 9, it is used for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect to described in the utility model
The operation principle of compound sensor be further described：
During work, in compound sensor described in the utility model, extra-high video sensor 10, superfrequency sensor connector
40 and fibre-optical splice 50 on the cover plate 20.Wherein, it is located at the extra-high video sensor institute coiled coil of fluorescence optical fiber 30
Plane in.Sealing ring is set on first seal groove 61, the second seal groove 63, to cause compound biography described in the utility model
Sensor has good sealing effectiveness.
After the completion of above-mentioned each part is fixedly mounted, cover plate 1 is installed on gas-insulated switchgear flange, by logical
Hole 201 is fixedly connected with external detection device, is set using superfrequency sensor connector 40 and fibre-optical splice 30 with external detection
Standby connection, you can carry out the detection of superfrequency and optical signal.
Compound sensor described in the utility model both has extra-high video sensor, is provided with fluorescence optical fiber again, possesses simultaneously
The ability of ultrahigh-frequency signal and optical signal is detected, and detection sensitivity is high, testing result good reliability；In addition, this practicality is new
Compound sensor described in type uses integrated structure design, thus its small volume, is easy to and gas-insulated switchgear flange
Cover plate integrates, and so as to be directly installed on gas-insulated switchgear flange, does not change gas-insulated switch and sets
Standby original structure and internal electric field are distributed；Further, since compound sensor described in the utility model uses fluorescence optical fiber spiral
Coil in the plane where the end face of high frequency sensors, thus, sensitive volume is wide, and Detection results are good, high sensitivity.
Above-described embodiment is the preferable embodiment of the utility model, but embodiment of the present utility model is not by above-mentioned
The limitation of embodiment, it is other it is any without departing from Spirit Essence of the present utility model with made under principle change, modify, replace
Generation, combination, simplify, should be equivalent substitute mode, be included within the scope of protection of the utility model.
Claims (10)
- A kind of 1. compound sensor for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect, it is characterised in that including：Cover plate, there is first end face and second end face on its axial direction；Extra-high video sensor, it is in the second end face；Fluorescence optical fiber, its coiled coil located at the extra-high video sensor end face where plane in；Superfrequency sensor connector, it is connected in the first end face with the extra-high video sensor；Fibre-optical splice, it is connected in the first end face with the fluorescence optical fiber.
- 2. compound sensor as claimed in claim 1, it is characterised in that the extra-high video sensor includes：The antenna of round metal plate-like, screwed hole of centre is provided with the center of the antenna；Connecting column, it is embedded in the screwed hole of centre, and the connecting column is connected with extra-high video sensor；Several shorting pins, its circumference along the antenna are uniformly distributed, and one end of the shorting pin is connected with antenna, its The other end is connected with cover plate；Dielectric layer, it is wrapped in the periphery of the antenna.
- 3. compound sensor as claimed in claim 2, it is characterised in that the dielectric layer contacts with the second end face of cover plate Face is provided with the first seal groove of annular, and sealing ring is provided with first seal groove.
- 4. compound sensor as claimed in claim 2, it is characterised in that the dielectric layer is epoxy resin medium layer.
- 5. compound sensor as claimed in claim 1, it is characterised in that the superfrequency sensor connector is N connector, institute N connector is stated to be connected with superfrequency sensor threads.
- 6. compound sensor as claimed in claim 2, it is characterised in that offer spiral on the axial end of the dielectric layer Groove, the fluorescence optical fiber in the helicla flute so that its coiled coil where the end face of the extra-high video sensor In plane.
- 7. compound sensor as claimed in claim 1, it is characterised in that the cover plate is rosette cover plate.
- 8. compound sensor as claimed in claim 7, it is characterised in that offer on the cover plate and set along its circumferential direction Several through holes, the through hole be used for the connector that cover plate is connected with measurement equipment to be checked is set.
- 9. compound sensor as claimed in claim 1, it is characterised in that the second end face of the cover plate is provided with the second sealing Groove, second seal groove are located at the periphery of extra-high video sensor.
- 10. compound sensor as claimed in claim 9, it is characterised in that second seal groove is at least provided with two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720812577.1U CN207007996U (en) | 2017-07-06 | 2017-07-06 | Compound sensor for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720812577.1U CN207007996U (en) | 2017-07-06 | 2017-07-06 | Compound sensor for the detection of gas-insulating and fully-enclosed combined electrical apparatus insulation defect |
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| CN207007996U true CN207007996U (en) | 2018-02-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329054A (en) * | 2017-07-06 | 2017-11-07 | 上海交通大学 | The compound sensor detected for gas-insulating and fully-enclosed combined electrical apparatus insulation defect |
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- 2017-07-06 CN CN201720812577.1U patent/CN207007996U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329054A (en) * | 2017-07-06 | 2017-11-07 | 上海交通大学 | The compound sensor detected for gas-insulating and fully-enclosed combined electrical apparatus insulation defect |
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