CN206920549U - Extra-high video sensor - Google Patents
Extra-high video sensor Download PDFInfo
- Publication number
- CN206920549U CN206920549U CN201720912334.5U CN201720912334U CN206920549U CN 206920549 U CN206920549 U CN 206920549U CN 201720912334 U CN201720912334 U CN 201720912334U CN 206920549 U CN206920549 U CN 206920549U
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- China
- Prior art keywords
- extra
- video sensor
- metallic shield
- high video
- substrate
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Abstract
The utility model discloses a kind of extra-high video sensor, including metallic shield, substrate, antenna, coaxial feeder and signal output connector, the substrate is located at the bottom inside metallic shield, the antenna is located on substrate, the signal output connector is located at the top of metallic shield, and the signal output connector is connected by coaxial feeder with the antenna.The extra-high video sensor has the advantages of small volume, easy to install, strong antijamming capability, solves existing for prior art the deficiency that performance indications are poor, sensitivity is low, and using effect is good, simple for production, beneficial to promoting the use of.The extra-high video sensor for effectively obtain ultrahigh-frequency signal, exclude the interference signal, expands superfrequency method GIS partial discharge detection in apply it is significant.
Description
Technical field
It the utility model is related to sensor technical field, particularly a kind of extra-high keeping pouring in for GIS partial discharge detection
Sensor.
Background technology
In the insulation system of electrical equipment, the electric-field intensity at each position is often unequal.When the electric-field intensity of regional area
When reaching the disruptive field intensity of the Region Medium, electric discharge just occurs in the region, but this electric discharge does not cause whole insulation system
It is breakdown, insulating properties are remained in that, this phenomenon turns into shelf depreciation.Sent out inside gas insulated combined electric appliance equipment (GIS)
During raw shelf depreciation, due to the rapid transfer of electric charge at point of discharge, duration very short current impulse (ns levels) is formed, and produce
The extremely abundant electromagnetic signal of raw frequency component (up to GHz), is entered by sensing superfrequency electric signal caused by shelf depreciation
Row Partial Discharge Detection, it is possible to realize higher sensitivity, and the shelf depreciation of early stage can be found in time.
The coaxial configuration of GIS device is advantageous to the propagation of ultrahigh-frequency signal, decays in its communication process few.It is additionally, since
In GIS device the reason for discontinuous place's reflection, ultrahigh-frequency signal can also cause resonance in the cavity of GIS device, make nanosecond
It is Microsecond grade that the local discharge signal of level, which extends,.Therefore, superfrequency method can detect the shelf depreciation of discharge capacity very little, have
Very high detection sensitivity.But in the prior art for the extra-high of detection gas insulation in combined electric appliance device interior shelf depreciation
Video sensor performance indications are poor, and effective bandwidth is often up to less than 300MHz-1500MHz, and in the difference in response of some frequency bands.
Utility model content
In view of this, the purpose of this utility model is to propose a kind of extra-high video sensor, solves extra-high video sensor and exists
In the range of 300M-1500M the problem of partial-band difference in response, to improve the sensitivity of extra-high video sensor and responding ability.
Based on above-mentioned purpose, extra-high video sensor provided by the utility model includes metallic shield, substrate, antenna, same
Feeder shaft and signal output connector, the substrate are located at the bottom inside metallic shield, and the antenna is located on substrate, described
Signal output connector is located at the top of metallic shield, and the signal output connector is connected by coaxial feeder with the antenna.
In some embodiments of the utility model, in addition to fixture, the both ends of the fixture respectively with metal screen
Top, the substrate connection of cover are covered, for substrate to be fixed in metallic shield, is offered inside the fixture through both ends
Hollow cavity, the coaxial feeder pass through the fixture hollow cavity.
In some embodiments of the utility model, the fixture is hollow cylinder, is made up of insulating materials, institute
State the central shaft that hollow cavity is located at fixture.
In some embodiments of the utility model, offer fill orifice on the fixture, the fill orifice with it is hollow
Chamber connects.
In some embodiments of the utility model, multiple fill orifices, the multiple perfusion are offered on the fixture
Radially uniform arrangement of the hole along fixture.
In some embodiments of the utility model, perforate is offered at the top of the metallic shield, the signal is defeated
Go out joint to be fixed in the perforate；And/or
The inner surface of the metallic shield scribbles coating for EMI shielding；And/or
The bottom of the metallic shield is also stained with the sponge strip of electromagnetic shield cloth parcel.
In some embodiments of the utility model, the bottom outside the metallic shield stretches out to form fixation
Plate, fixing hole is offered in the fixed plate, insulated for the extra-high video sensor to be fixed on into GIS device by binding strap
On basin.
In some embodiments of the utility model, the junction of the metallic shield and fixed plate is arc；With/
Or,
The opposite sides of the metallic shield is respectively equipped with one piece of fixed plate, and two are offered respectively in every piece of fixed plate
Fixing hole, in order to firmly fix the extra-high video sensor.
In some embodiments of the utility model, the substrate is rectangle, and the long side of the substrate is set respectively
There is an antenna, and two antennas are with the center line point symmetry of the substrate.
In some embodiments of the utility model, the antenna is chip aerial.
From the above it can be seen that extra-high video sensor provided by the utility model has small volume, the side of installing and using
Just, the advantages of strong antijamming capability, the deficiency that performance indications are poor, sensitivity is low, using effect are solved existing for prior art
It is good, it is simple for production, beneficial to promoting the use of.The extra-high video sensor for effectively obtain ultrahigh-frequency signal, exclude the interference signal,
Expand superfrequency method in GIS partial discharge detection using significant.
Brief description of the drawings
Fig. 1 is the structural representation of the extra-high video sensor of the utility model embodiment；
Fig. 2 is the structural representation of the utility model one embodiment substrate and antenna；
Fig. 3 is the structural representation of another implementation spr substrate of the utility model and antenna；
Fig. 4 is the structural representation of the utility model embodiment fixture.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, below in conjunction with specific embodiment, and
Referring to the drawings, the utility model is further described.
It should be noted that all statements for using " first " and " second " are for distinguishing in utility model embodiment
Two non-equal entities of same names or non-equal parameter, it is seen that " first " " second " only for statement convenience, no
It is interpreted as the restriction to utility model embodiment, subsequent embodiment no longer illustrates one by one to this.
As shown in figure 1, its structured flowchart for the extra-high video sensor of the utility model embodiment.As the utility model
One embodiment, the extra-high video sensor includes metallic shield 1, substrate 3, antenna 6, coaxial feeder 4 and signal output
Joint 2, the substrate 3 are located at the bottom inside metallic shield 1, and the antenna 5 is located on substrate 3, and the signal output connects
First 2 are located at the top of metallic shield 1, and the signal output connector 2 is connected by coaxial feeder 4 with the antenna 6.The gold
Category radome 1 is used to shield external ultrahigh-frequency signal, and the antenna 6 forms dipole antenna, the substrate with coaxial feeder 4
3 are used for fixed antenna 5, and the signal output connector 2 is used for output signal.
In another embodiment of the present utility model, the extra-high video sensor also includes fixture 8, the fixture
The top with metallic shield 1, substrate 3 are connected respectively at 8 both ends, described for substrate 3 to be fixed in metallic shield 1
The hollow cavity through both ends is offered inside fixture 8, the coaxial feeder 4 passes through the hollow cavity of the fixture 8.It is optional
Ground, the fixture 8 are hollow cylinder, are made up of insulating materials, the hollow cavity is located at the central shaft of fixture 8, institute
State the hollow cavity that coaxial feeder 4 passes through the center of fixture 8.As one embodiment of the present utility model, the cylinder is fixed
The height of part 8 is 40mm, to ensure that substrate and the distance between metallic shield top are stable, is unlikely in embedding fluid sealant
It is subjected to displacement, causes substrate and metallic shield top surface not parallel.
As another embodiment of the present utility model, as shown in figure 4, fill orifice 9 is offered on the fixture 8, institute
State fill orifice 9 to connect with hollow cavity, for pouring into casting glue into fixture 8.Preferably, offered on the fixture 8 more
Individual fill orifice 9, radially uniform arrangement of the multiple fill orifice 9 along fixture 8, equably to pour into embedding into hollow cavity
Glue.Specifically, after installation terminates, by sensor base upward, whole sensor, casting glue are irrigated with epoxy resin embedding adhesive
5mm is must not exceed beyond substrate thickness.
Alternatively, the metallic shield 1 is rectangular shape, the metallic shield of this shape so that the superfrequency
Sensor is suitably positioned at GIS insulating basins.Specifically, the length of the metallic shield 1 can be respectively
120mm, 80mm and 50mm, the substrate 3 can be 40mm apart from the distance from top of metallic shield 1.The setting of this length, width and height
The band characteristicses of sensor are not only ensure that, and are easily installed at GIS insulating basin.
Alternatively, the top of the metallic shield 1 offers perforate, and the signal output connector 2 is fixed on the perforate
In.Preferably, the perforate is located at the center at the top of metallic shield 1, i.e., described signal output connector 2 is located at metal screen
Cover the center at the top of cover 1.In another embodiment of the present utility model, bottom outside the metallic shield 1 to
Outer extension forms fixed plate 10, fixing hole 5 is offered in the fixed plate 10, for sensing the superfrequency by binding strap
Device is fixed on GIS device insulating basin.Preferably, the metallic shield 1 and the junction of fixed plate 10 are arc, can
GIS insulating basins are bonded well, are on the one hand advantageous to receive inside GIS by the ultrahigh-frequency signal of insulating basin transmission, separately
On the one hand it can prevent the interference signal of outside from entering in the extra-high video sensor.Alternatively, the metallic shield 1 is relative
Both sides are respectively equipped with one piece of fixed plate 10, two fixing holes 5 are offered in every piece of fixed plate 10 respectively, in order to firmly fix
The extra-high video sensor.
In order to preferably shield the signal of external ultrahigh-frequency signal, particularly mobile communication, the metallic shield 1
Inner surface is also coated with coating for EMI shielding, such as TF-801 silver-bearing copper conductive paints etc..The bottom of metallic shield 1 and GIS device
Insulating basin junction is also stained with the sponge strip of electromagnetic shield cloth parcel.It can so ensure that sensor is arranged in GIS device
External ultrahigh frequency electromagnetic wave signal can be preferably shielded afterwards.
As another embodiment of the present utility model, the substrate 3 is rectangle, can be by epoxy resin or polytetrafluoro
Ethylene plate is made.Specifically, the length and width of the substrate 3 are respectively 105mm and 45mm.The long side of the substrate 3 is set respectively
An antenna 6 is equipped with, and two antennas 6, so that each difference of frequency response is small, are improved with the center line point symmetry of the substrate 3
Detection sensitivity.
Alternatively, the antenna 6 is chip aerial.Preferably, the chip aerial 6 is shaped as symmetrical isoceles triangle
Shape or sector, as shown in Figures 2 and 3, the symmetrical antenna of two panels form dipole antenna, this antenna wide outside and narrow inside with coaxial feeder
It ensure that its response band scope is wide (300MHz-1500MHz), and each difference of frequency response is small.Two panels symmetrical antenna is in
Same plane, compared with the conventional dipole sub-antenna that structure forms an angle, its frequency band is narrower (300MHz-1.5GHz).Preferably,
The base of the isosceles triangle is parallel with the long side of substrate 3.As further embodiment of the present utility model, the antenna 6
It can be printed on the substrate 3 by the way of printed circuit making sheet.The culminating point 7 of described two antennas by coaxial feeder with
Signal output connector connects.
Compared with prior art, extra-high video sensor provided by the utility model has advantages below：
1) it is suitably positioned at GIS insulating basins, and GIS insulating basins can be bonded well, is on the one hand advantageous to
Receive inside GIS by the ultrahigh-frequency signal of insulating basin transmission, on the other hand can prevent the interference signal of outside from entering sensing
Device；
2) it ensure that its response band scope is wide (300MHz-1500MHz), and each difference of frequency response is small.
3) dual shield of metallic shield and its internal shield coating is designed, and bottom is combined with GIS insulating basins
The shielding sponge at place, it can effectively prevent external interference signals from entering sensor, ensure that the accuracy of sensor senses signal.
In summary, extra-high video sensor provided by the utility model has small volume, easy to install, anti-interference energy
The advantages of power is strong, the deficiency that performance indications are poor, sensitivity is low is solved existing for prior art, using effect is good, simple for production,
Beneficial to promoting the use of.The extra-high video sensor is for effectively obtaining ultrahigh-frequency signal, excluding the interference signal, expand superfrequency method
Using significant in GIS partial discharge detection.
Those of ordinary skills in the art should understand that：The discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Under thinking of the present utility model, the above is real
Applying can also be combined between the technical characteristic in example or different embodiments, and exist as described above of the present utility model
Many other changes of different aspect, for simplicity, they are not provided in details.Therefore, it is all in spirit of the present utility model
Within principle, any omission for being made, modification, equivalent substitution, improvement etc., the scope of protection of the utility model should be included in
Within.
Claims (10)
1. a kind of extra-high video sensor, it is characterised in that including metallic shield, substrate, antenna, coaxial feeder and signal output
Joint, the substrate are located at the bottom inside metallic shield, and the antenna is located on substrate, and the signal output connector is located at
The top of metallic shield, the signal output connector are connected by coaxial feeder with the antenna.
2. extra-high video sensor according to claim 1, it is characterised in that also including fixture, the two of the fixture
The top with metallic shield, substrate connection respectively are held, for substrate to be fixed in metallic shield, inside the fixture
The hollow cavity through both ends is offered, the coaxial feeder passes through the hollow cavity of the fixture.
3. extra-high video sensor according to claim 2, it is characterised in that the fixture is hollow cylinder, by
Insulating materials is made, and the hollow cavity is located at the central shaft of fixture.
4. extra-high video sensor according to claim 2, it is characterised in that fill orifice, institute are offered on the fixture
Fill orifice is stated to connect with hollow cavity.
5. extra-high video sensor according to claim 4, it is characterised in that multiple perfusions are offered on the fixture
Hole, radially uniform arrangement of the multiple fill orifice along fixture.
6. extra-high video sensor according to claim 1, it is characterised in that offered out at the top of the metallic shield
Hole, the signal output connector are fixed in the perforate；And/or
The inner surface of the metallic shield scribbles coating for EMI shielding；And/or
The bottom of the metallic shield is also stained with the sponge strip of electromagnetic shield cloth parcel.
7. extra-high video sensor according to claim 1, it is characterised in that the bottom outside the metallic shield is outside
Extension forms fixed plate, fixing hole is offered in the fixed plate, for fixing the extra-high video sensor by binding strap
On GIS device insulating basin.
8. extra-high video sensor according to claim 7, it is characterised in that the connection of the metallic shield and fixed plate
Locate as arc；And/or
The opposite sides of the metallic shield is respectively equipped with one piece of fixed plate, offers two fixations in every piece of fixed plate respectively
Hole, in order to firmly fix the extra-high video sensor.
9. extra-high video sensor according to claim 1, it is characterised in that the substrate is rectangle, the substrate
Long side is respectively arranged with an antenna, and two antennas are with the center line point symmetry of the substrate.
10. extra-high video sensor according to claim 9, it is characterised in that the antenna is chip aerial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720912334.5U CN206920549U (en) | 2017-07-25 | 2017-07-25 | Extra-high video sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720912334.5U CN206920549U (en) | 2017-07-25 | 2017-07-25 | Extra-high video sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206920549U true CN206920549U (en) | 2018-01-23 |
Family
ID=61348388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720912334.5U Expired - Fee Related CN206920549U (en) | 2017-07-25 | 2017-07-25 | Extra-high video sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206920549U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109254232A (en) * | 2018-10-19 | 2019-01-22 | 国家电网有限公司 | Wedge-shaped superfrequency partial discharge sensor |
| CN113702818A (en) * | 2021-08-12 | 2021-11-26 | 广东电网有限责任公司广州供电局 | GIS equipment and partial discharge ultrahigh frequency monitoring assembly |
-
2017
- 2017-07-25 CN CN201720912334.5U patent/CN206920549U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109254232A (en) * | 2018-10-19 | 2019-01-22 | 国家电网有限公司 | Wedge-shaped superfrequency partial discharge sensor |
| CN109254232B (en) * | 2018-10-19 | 2024-01-09 | 国家电网有限公司 | Wedge-shaped ultrahigh frequency partial discharge sensor |
| CN113702818A (en) * | 2021-08-12 | 2021-11-26 | 广东电网有限责任公司广州供电局 | GIS equipment and partial discharge ultrahigh frequency monitoring assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180123 Termination date: 20210725 |