CN208172154U - A kind of PCB antenna and the external acoustic-electric compound sensor for the detection of GIS insulation defect - Google Patents
A kind of PCB antenna and the external acoustic-electric compound sensor for the detection of GIS insulation defect Download PDFInfo
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- CN208172154U CN208172154U CN201820301128.5U CN201820301128U CN208172154U CN 208172154 U CN208172154 U CN 208172154U CN 201820301128 U CN201820301128 U CN 201820301128U CN 208172154 U CN208172154 U CN 208172154U
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Abstract
The utility model discloses a kind of PCB antennas, it includes substrate and the antenna set on substrate surface, the substrate has the first surface and second surface for being located at its two sides, the first surface is equipped with the first circular loop antenna and the second circular loop antenna being connected in parallel, the second surface is equipped with the third circular loop antenna and the 4th circular loop antenna being connected in series, wherein the 4th circular loop antenna has the inner fovea part being recessed into it.In addition, a kind of external acoustic-electric compound sensor for the detection of GIS insulation defect is also disclosed in the utility model, including：Metal shell, metal cover board, above-mentioned PCB antenna, contact ultrasonic sensor, the first cable, the second cable and the first wire rope wedge and the second wire rope wedge.The PCB antenna is by using antarafacial structure so that PCB antenna includes two different detection main band, to be suitable for the detection of different discharge signals.
Description
Technical field
The utility model relates to a kind of antenna and the sensor including the antenna more particularly to one kind can be used for insulating
The antenna of defects detection and sensor including the antenna.
Background technique
Safety with the continuous development of national economy and being continuously increased for China's electric system scale, to operation of power networks
It is increasingly improved with reliability requirement.The safe operation of power grid, depends primarily on the safe operation of high voltage electric equipment, and electrically sets
Standby operational reliability is largely dependent upon the maintenance of the quality and equipment of electrical equipment manufacture and installation, operation dimension
Shield and necessary precaution test etc..
Gas-insulated switchgear (Gas-Insulated-Switchgear, GIS) is because its reliability is high, occupied area
Small, the advantages that maintenance is simple, the time between overhauls(TBO) is long and be widely used in power grid.Studies have shown that GIS device design,
Manufacture, transport, some accidentalia in installation process will cause some congenital local defects, as bubble, crack, suspension are led
Electric particle and burr etc..These defects will cause that GIS device some regions electric field strength is excessively high, when the breakdown for being higher than dielectric
Shelf depreciation will occur when field strength.Shelf depreciation is both to characterize the characteristic quantity of GIS device insulation status and cause to insulate bad
The main reason for change.By Partial Discharge Detection, insulation defect existing for GIS device inside can be found in time, equipment is avoided to send out
Raw sudden dielectric breakdown accident, this has a very important significance the safe and stable operation for guaranteeing GIS device and power grid.
Detection method for local discharge generally includes：Pulse current method, supercritical ultrasonics technology, chemical measure, optical detection, spy
High frequency (Ultra High Frequency) method.Wherein, superfrequency method and supercritical ultrasonics technology are that current live GIS device mainly uses
Live detection method.Superfrequency (UHF) method is with its high sensitivity, the advantages that coverage area is big, strong antijamming capability, in recent years
Have become the main means of GIS equipment partial discharge detection.The voice signal of supercritical ultrasonics technology detection, not by the shadow of electromagnetic interference
It rings, at anti-interference aspect there is apparent advantage to have in terms of accurate positioning further, since the spread speed of ultrasonic wave is slow
Apparent advantage.
If two kinds of detection methods of superfrequency and ultrasonic wave can be combined, then scene band electric-examination can be greatly improved
Survey the reliability of result and the accuracy of positioning.But it in view of combining superfrequency with two methods of ultrasonic wave, needs same
When detection ultrahigh-frequency signal and ultrasonic signal, that is to say, that while using extra-high video sensor and ultrasonic sensor, pacifying
It is upper very inconvenient to fill and use, and can be related to using two sets of entirely different systems, and signal synchronizes difficulty, joins to acoustoelectric signal
It is unfavorable to close positioning.Based on this, it is expected that obtaining a kind of external acoustic-electric compound sensor for GIS partial discharge live detection.
Utility model content
One of the purpose of this utility model is to provide a kind of PCB antenna, the PCB antenna by using antarafacial structure to
So that PCB antenna includes two different detection main band, to be suitable for the detection of different discharge signals.
Based on above-mentioned purpose, the utility model proposes a kind of PCB antennas comprising substrate and the day set on substrate surface
Line, wherein the substrate has the first surface and second surface for being located at its two sides, and the first surface is equipped with simultaneously
Join connection the first circular loop antenna and the second circular loop antenna, the second surface be equipped be connected in series third circular loop antenna and
4th circular loop antenna, wherein the 4th circular loop antenna has the inner fovea part being recessed into it.
For PCB antenna described in the utility model, by design antarafacial structure so that PCB antenna includes two
A different detection main channel, to be suitable for the detection of different discharge signals.Specifically, first surface is equipped with and is connected in parallel
The first circular loop antenna and the second circular loop antenna, can be used for detecting the higher part of frequency in discharge signal, such as 1.3-
1.5GHz, and second surface is equipped with the third circular loop antenna and the 4th circular loop antenna being connected in series, wherein the 4th circular loop antenna
With the inner fovea part being recessed into it, the setting of inner fovea part is in order to be improved by symmetric curvature, to increase the effective of antenna
Length reduces resonance frequency.In addition, second surface and the first annulus where third circular loop antenna and the 4th set of circular loop antenna
First surface where antenna and the second circular loop antenna is in different planes, thus, resonance frequency is not also identical, second surface
It can be used for detecting the lower part of frequency in discharge signal, such as 400-600MHz.
Further, in PCB antenna described in the utility model, first circular loop antenna and the second circular loop antenna
Diameter is identical, and the resonance frequency of first circular loop antenna and the second circular loop antenna is identical.
In above scheme, since the first circular loop antenna is identical as the diameter of the second circular loop antenna, and first annulus day
The resonance frequency of line and the second circular loop antenna is identical, and the energy that lotus root is closed increases, and it is higher to be conducive to the frequency detected in discharge signal
Part.
Further, in PCB antenna described in the utility model, it is right relative to one another that the 4th circular loop antenna has
Claim at least a pair of inner fovea part of setting.
Further, in PCB antenna described in the utility model, the substrate is epoxy resin board.
Correspondingly, the another object of the utility model is to provide a kind of external sound for the detection of GIS insulation defect
Electric compound sensor, can be effectively by two kinds of detection method knots of superfrequency and ultrasonic wave using the external acoustic-electric compound sensor
It closes, to improve scene with the point reliability of detection structure and the accuracy of positioning.
Based on above-mentioned purpose, the utility model proposes a kind of external acoustic-electric for the detection of GIS insulation defect is compound
Sensor, including：
Metal shell, the interior partition that is equipped with is will be divided into the first space and second space, the partition inside metal shell
It is equipped with cable hole, the wall in first space is equipped with the first connector and the second connector；
Metal cover board is covered on the metal shell, and the first space is formed as enclosure space；
Above-mentioned PCB antenna is set in the second space；
Contact ultrasonic sensor is set in the second space, the detection end face of the contact ultrasonic sensor
It is contacted under detecting state with equipment under test；
First cable, first end are connect with the PCB antenna, and second end passes through cable hole and described the on partition
The connection of one connector；
Second cable, first end are connect with the contact ultrasonic sensor, and second end passes through the cable on partition
Hole is connect with second connector；
First wire rope wedge and the second wire rope wedge are set on partition and are located at the side in the first space,
The first wire rope wedge and the second wire rope wedge are respectively corresponded and are connect with the metal core of the first cable and the second cable
Touching connection.
When detection, the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect can be with
Connect with detection system, PCB antenna is used to detect the ultrahigh-frequency signal of equipment under test, by the first cable and with the first cable
The first wire rope wedge that metal core connects transmits ultrahigh-frequency signal；Contact ultrasonic sensor under detecting state with
Equipment under test contact, contact ultrasonic sensor for receiving ultrasonic signal, and by the second cable and with the second cable
The second wire rope wedge that metal core connects receives transmission ultrasonic signal.By above-mentioned setting so that the external
Acoustic-electric compound sensor can combine superfrequency with ultrasonic detection method, while detect ultrahigh-frequency signal and ultrasound letter
Number, and signal synchronizes conveniently, is conducive to acoustoelectric signal alignment by union.
Wherein, metal shell can effectively shield external electromagnetic signal, as much as possible exclusion signal interference, ensure inspection
Mass metering.In technical solution described in the utility model, the diameter of cable hole can be slightly larger than the diameter of cable, so as to cable
The cable hole can be passed through.
In addition, in technical solution described in the utility model, the first wire rope wedge and the second wire rope wedge
It respectively corresponds and is connected with the metal core of the first cable and the second cable, so that the first cable and the second cable are corresponding
Play the role of good ground connection at wire rope wedge.In order to make the first cable, the second cable and corresponding wire rope wedge
It contacts more reliable, in some embodiments, can be welded with scolding tin here.
Further, in external acoustic-electric compound sensor described in the utility model, further include：
Cylindrical support sleeve, offers the slot extended along its axial direction thereon, and the support sleeve is set in second space
And it is set between the partition and the substrate of the PCB antenna, the contact ultrasonic sensor is sheathed on the support sleeve
Interior, the signal output connector of contact ultrasonic sensor is stretched out from the slot；
Elastic element is set in the support sleeve, and is set between the bottom face and partition of contact ultrasonic sensor；
Wherein, the substrate of the PCB antenna is equipped with hole, so that the detection end face of the contact ultrasonic sensor can
It is stretched out from the substrate and support sleeve of PCB antenna, to be contacted with equipment under test；The elastic element is on the axial direction of support sleeve
Apply pressure to contact ultrasonic sensor, to be pressed on equipment under test under detecting state.
In above scheme, support sleeve can use insulating materials, such as the preferable plastics of intensity；Elastic element can use
Brute spring.In addition, the entire length of elastic element is set as slightly longer than contact ultrasonic sensor bottom to support sleeve bottom
Distance so that when not having external force, contact ultrasonic sensor is in the top of support sleeve always, and contact is super
The top of sonic transducer is slightly above metal shell.When test, external acoustic-electric compound sensor is attached to the benzvalene form of GIS device
Insulator is close to the bottom of metal shell with disc insulator, under the elastic force of elastic element, makes contact ultrasonic sensor
Top be tightly attached to disc insulator, to can also test ultrasonic signal while testing ultrahigh-frequency signal.
Further, in external acoustic-electric compound sensor described in the utility model, the outer surface of the support sleeve
Equipped with the lug boss projected radially outwardly, the substrate of the axial end face of the lug boss and the PCB antenna will be against will support
Set is limited between the partition and the substrate of the PCB antenna.
Further, in external acoustic-electric compound sensor described in the utility model, first connector and/or
Two connectors are N connector.
Further, in external acoustic-electric compound sensor described in the utility model, the first wire rope pressure
Seat and/or the second wire rope wedge respectively include：The boss being fixed on partition and the gold being detachably connected with boss
Belong to briquetting, the hold-down apertures of the first cable of corresponding accommodating and/or the second cable are formed between the metallic briquette and boss.
In above scheme, for the ease of connection, in some embodiments, connecting hole, boss are set on metallic briquette
On connecting hole is also correspondingly set, be attached with will pass through connector such as screw for metallic briquette and boss.
Further, in external acoustic-electric compound sensor described in the utility model, the aperture of the hold-down apertures is omited
Less than the first cable and/or the diameter of the metal core of the second cable.
Further, in external acoustic-electric compound sensor described in the utility model, the metallic briquette is copper
Metallic briquette.
Further, in external acoustic-electric compound sensor described in the utility model, first connector and/or
The first sealing ring is equipped between two connectors and the wall in first space；And/or the metal shell and metal cover board it
Between be equipped with the second sealing ring.
In above scheme, the first sealing ring and the second sealing ring are set, are to guarantee external acoustic-electric compound sensor
It can also use for a long time in a humidity environment.In addition, the outer surface of the wall in the first space should be smooth as far as possible, so that sealing ring
Protective effect can be better played.
Further, in external acoustic-electric compound sensor described in the utility model, the metal shell is located at the
The end face in two this side of spaces is arranged to curved end.
In above scheme, since the shape of the disc insulator of GIS device is usually cylindrical shape, metal-back position
It is arranged to curved end in the end face of this side of second space, so as to external acoustic-electric composite sensing described in the utility model
Device is preferably attached on disc insulator.
Further, in external acoustic-electric compound sensor described in the utility model, the metal shell is located at the
The end face in two this side of spaces has the ear stretched out outward, and the slot of accommodating restraint zone is offered in the ear, and/or
Ear described in person is equipped with fastening bolt.
In technical solution described in the utility model, when needing with the compound biography of external acoustic-electric described in the utility model
When sensor carries out short-term on-line monitoring, the external acoustic-electric compound sensor directly can be tightly attached to disc insulator
Upper implementation monitoring, carries out long-term on-line monitoring if necessary, can (in some embodiments, can be with a restraint zone
Strap) pass through ear on open up accommodating restraint zone slot, be then wound on disc insulator and be fixed, can be realized by
External acoustic-electric compound sensor described in the utility model is fixed on disc insulator.
PCB antenna described in the utility model is by using antarafacial structure so that PCB antenna includes two different
Main band is detected, to be suitable for the detection of different discharge signals.
In addition, the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect can have
Effect combines two kinds of detection methods of superfrequency and ultrasonic wave, to improve reliability of the scene with point detection structure and positioning
Accuracy, ultrahigh-frequency signal may include two different detection main band, the detection suitable for different discharge signals.
In addition, the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect shields effect
Fruit is good, and waterproofness is strong, can also continue to use in a humid environment.
Furthermore the external acoustic-electric compound sensor user described in the utility model for the detection of GIS insulation defect
Just, it is convenient to carry, and especially installs and disassembles very convenient, can be not only used for on-site test, moreover it can be used to long-term on-line monitoring.
Detailed description of the invention
Fig. 1 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
Overall structure diagram under one of embodiment visual angle.
Fig. 2 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The overall structure diagram under another visual angle in embodiment.
Fig. 3 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
Internal sectional structure figure in embodiment.
Fig. 4 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram of PCB antenna under one of embodiment visual angle.
Fig. 5 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram of the PCB antenna under another visual angle in embodiment.
Fig. 6 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram of metal cover board in embodiment.
Fig. 7 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram for not installing metal cover board under one of embodiment visual angle.
Fig. 8 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram for not installing metal cover board under another visual angle in embodiment.
Fig. 9 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram for not installing metal cover board, the first connector and the second connector in embodiment.
Figure 10 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram of signal output connector in embodiment.
Figure 11 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram of support sleeve in embodiment.
Figure 12 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram of elastic element in embodiment.
Figure 13 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram of the first connector and the second connector in embodiment.
Figure 14 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram of metallic briquette in embodiment.
Specific embodiment
It is examined to described in the utility model for GIS insulation defect below in conjunction with Figure of description and specific embodiment
The external acoustic-electric compound sensor of survey makes further explanation, however the explanation and illustration is not to the utility model
Technical solution constitute improper restriction.
Fig. 1 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
Overall structure diagram under one of embodiment visual angle.Fig. 2 is described in the utility model for GIS insulation defect
Overall structure diagram under another visual angle of the external acoustic-electric compound sensor of detection in one embodiment.Figure
3 for it is described in the utility model for GIS insulation defect detection external acoustic-electric compound sensor in one embodiment
Internal sectional structure figure.
As shown in Figure 1, simultaneously combining Fig. 2 and Fig. 3 if necessary, it is used for what GIS insulation defect detected in present embodiment
The compound sense of touch 1 of external acoustic-electric includes：Metal shell 11, the interior partition that is equipped with is will be divided into the first space I inside metal shell
With second space II, partition is equipped with the first cable hole 132 and the second cable hole 142 (the first cable hole 132 and the second line
Cable hole 142 refers to Fig. 9), the first cable hole 132 and the second cable hole 142 can be set to the identical circular hole of two diameters, the
One cable hole 132 and the second cable hole 142 are used for across the first cable and the second cable；First cable, first end with
PCB antenna 15 connects, and second end passes through the first connector 13 on the wall of the first cable hole 132 and the first space I on partition
Connection, the second cable, first end are connect with contact ultrasonic sensor 16, and second end passes through the second cable hole on partition
142 connect with the second connector 14 on the wall of the first space I, therefore, the aperture of the first cable hole 132 and the second cable hole 142
The diameter for being slightly over the first, second cable can be set, in order to which the first cable and the second cable pass through；Metal cover board
12, it is covered on metal shell 11, the first space I is formed as into enclosure space；PCB antenna 15 is set to second space
In II；Contact ultrasonic sensor 16 is set in second space II, and the detection end face of contact ultrasonic sensor 16 is being detected
It is contacted under state with equipment under test；First wire rope wedge 181 and the second wire rope wedge 182, which are set on partition, to be located at
The side of first space I, the first wire rope wedge 181 and the second wire rope wedge 182 respectively correspond with the first cable and
The metal core of second cable connects.
In addition, can be seen that external acoustic-electric compound sensor in the present embodiment in conjunction with Fig. 2 and Fig. 3 and further include
Cylindrical support sleeve 161, support sleeve 161 are set in second space II and are set between partition and the substrate of PCB antenna 15, connect
Touch ultrasonic sensor 16 is sheathed in support sleeve 161, (the signal output of signal output connector 31 of contact ultrasonic sensor 16
The structure of connector 31 is referring to Figure 10) it is stretched out in the slot that is arranged on self-supporting set cylindrical surface；Elastic element 162 is set to support sleeve
In 161, and it is set between the bottom face and partition of contact ultrasonic sensor 16；
Wherein, the substrate of PCB antenna 15 is equipped with centre bore 150 (referring to Fig. 4 and Fig. 5), so that contact ultrasonic sensing
The detection end face of device 16 can be stretched out from the substrate and support sleeve 161 of PCB antenna 15, to contact with equipment under test；Elastic element
162 apply pressure to contact ultrasonic sensor 16 on the axial direction of support sleeve 161, to be pressed under detecting state
On equipment under test.
In addition, from figure 2 it can be seen that the end face that metal shell 11 is located at this side of second space is arranged to arc end
Face.
About the external acoustic-electric compound sensor all parts in present embodiment structure and between connection close
System can be with further reference to Fig. 4 to Figure 14.
Fig. 4 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram of PCB antenna under one of embodiment visual angle.Fig. 5 is described in the utility model for GIS insulation
The structure of PCB antenna under another visual angle of the external acoustic-electric compound sensor of defects detection in one embodiment is shown
It is intended to.
As shown in Figure 4 and Figure 5, and if necessary Fig. 2 and Fig. 3 is combined, in present embodiment, PCB antenna 15 includes substrate
With the antenna for being set to substrate surface, substrate, which has, is located at the first surface and second surface of its two sides, and shown in Fig. 4 the
One surface is equipped with the first circular loop antenna 151 and the second circular loop antenna 152, and second surface as shown in Figure 5 is equipped with third circle
Loop antenna 153 and the 4th circular loop antenna 154, wherein the 4th circular loop antenna has the inner fovea part 1541 being recessed into it, by feeder line
Point 155 is connected in parallel it can be seen that using between the first circular loop antenna 151 and the second circular loop antenna 152, third circular loop antenna 153
And the 4th between circular loop antenna 154 using series connection.In addition, the center of PCB antenna 15 has centre bore 150, pore size
It is identical as the diameter of support sleeve 161, for across support sleeve 161.
15 substrate of PCB antenna use epoxy resin board, and substrate quadrangle be equipped with fixation hole, with screw thread shown in Fig. 8
Hole 19 cooperates, and PCB antenna 15 is fixed in external acoustic-electric compound sensor 1 by connector such as screw.
Since the PCB antenna 15 in this case is composed of multiple hoop antennas, the resonance work of each circular loop antenna
Working frequency frIt can be determined by formula (1)：
Wherein, L is ring perimeter, and C is the light velocity.
In addition, the first surface of the PCB antenna 15 in this case is using the first circular loop antenna 151 being connected in parallel and the second circle
Loop antenna 152 is connected in parallel the mode of output, the diameter of two annulus of the first circular loop antenna 151 and the second circular loop antenna 152
Identical, and be greater than the diameter of centre bore 150, the first circular loop antenna 151 and the second circular loop antenna 152 are in same plane and humorous
Vibration frequency is identical, the energy supposition of coupling, can be used for detecting the higher part of frequency in discharge signal, such as 1.3-
1.5GHz；And for the second surface of PCB antenna 15 using the third circular loop antenna 153 and the 4th circular loop antenna being connected in series
154, wherein carrying out symmetric curvature improvement to the circular ring structure of the 4th circular loop antenna 154, i.e. the 4th circular loop antenna 154 has each other
Relatively symmetrically arranged at least a pair of of inner fovea part 1541, reduces resonance frequency to increase the effective length of antenna, due to the
Three circular loop antennas 153 and the 4th circular loop antenna 154 are different from the first circular loop antenna 151 and the second circular loop antenna 152
Plane and resonance frequency difference, can be used for detecting the lower part of frequency, such as 400-600MHz in discharge signal.
Fig. 6 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram of metal cover board in embodiment.
As shown in fig. 6, simultaneously combining Fig. 1 to Fig. 3 if necessary, metal cover board 12 is equipped with metal cover plate hole 121, with figure
Metal-back body opening 111 on metal shell shown in 9 is adapted to setting, is fixed on metal cover board 12 by connector such as screw hole
On metal shell 11, the first space I is formed into enclosure space.Firm in order to make to firmly install, metal cover plate hole 121 can be set
Several are set, such as setting 14.
Fig. 7 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram for not installing metal cover board under one of embodiment visual angle.Fig. 8 is described in the utility model is used for
Under another visual angle of the external acoustic-electric compound sensor of GIS insulation defect detection in one embodiment gold is not installed
Belong to the structural schematic diagram of cover board.
As shown in fig. 7, Fig. 1 to Fig. 3 is simultaneously combined if necessary, in the first space I, in addition to including the first connector 13, the
Two connectors 14, the first cable hole 132, the second cable hole 142, the first wire rope wedge 181 and the second wire rope wedge 182
Outside, the second sealing ring 172 is equipped between metal shell 11 and metal cover board 12.In addition, it should be noted that, the first connector 13
And second be additionally provided with the first sealing ring between connector 14 and the wall of the first space I.First sealing ring and the second sealing ring are set
172 can also be used for a long time to guarantee external acoustic-electric compound sensor 1 in a humidity environment.
And as shown in figure 8, Fig. 1 to Fig. 3 is simultaneously combined if necessary, including contact ultrasonic sensor in second space II
16, support sleeve 161 and the elastic element 162 being sheathed in support sleeve 161, the specific structure of above-mentioned component can further join
Figure 10 is examined to Figure 12.Threaded hole 19 is for PCB antenna 15 to be fixed in external acoustic-electric compound sensor 1.
Fig. 9 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram for not installing metal cover board, the first connector and the second connector in embodiment.
Fig. 9 illustrates the structure in this case between all parts.First connection port 131, the second connection port 141 pass through setting spiral shell
Line is connect with the first connector 13 with the second connector 14.
With reference to Fig. 9 as can be seen that the end face that metal shell 11 is located at this side of second space has outwardly directed ear
112, the slot of accommodating restraint zone is offered in ear 112, and in some embodiments, be also provided in ear 112 tight
Fixing bolt is to reinforce fixing.
In addition, in conjunction with Fig. 3, Fig. 9 and Figure 14 to the first wire rope wedge 181 and the second wire rope wedge 182 into
Row explanation, the first wire rope wedge 181 and the second wire rope wedge 182 respectively include：First be fixed on partition
Boss 1811, second boss 1821 and the metallic briquette 180 being detachably connected with first boss 1811, second boss 1821,
The first cable of corresponding accommodating and/or the second cable are formed between metallic briquette 180 and first boss 1811, second boss 1821
Hold-down apertures, the aperture of the hold-down apertures is slightly less than the diameter of the metal core of the first cable and/or the second cable.Metallic briquette 180
For copper metallic briquette, the groove there are two fixation hole and an arc-shaped is opened on metallic briquette, is screwed in metal-back
On in body, the diameter and depth of groove are consistent with the groove in first boss 1811, second boss 1821, pass through hold-down apertures
The first cable, the second cable passed through among two grooves again, the core of latter two right cable is welded in the first connector 13, the
On the metal core of two connectors 14, metallic briquette 180 can be compressed the first cable, the second cable passed through, therefore the aperture of tieholen
It is slightly less than the diameter of the metal core of the first cable and/or the second cable, the first cable can be same using double shield with the second cable
Axis cable, the cable part at 180 compression of metallic briquette need to peel off exocuticle, make cable outer layer good earth at this, in order to
Keep its contact more reliable, can be welded again with scolding tin here.
Figure 10 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram of signal output connector in embodiment.Figure 11 is described in the utility model for the inspection of GIS insulation defect
The structural schematic diagram of the support sleeve of the external acoustic-electric compound sensor of survey in one embodiment.Figure 12 is the utility model
The knot of the elastic element of the external acoustic-electric compound sensor for the detection of GIS insulation defect in one embodiment
Structure schematic diagram.
It is described further in conjunction with structure of the Figure 10 to Figure 12 to the contact ultrasonic sensor in present embodiment.At this
In embodiment, support sleeve 161 uses insulating materials, such as the preferable plastics of usable intensity, and elastic element 162 can be using strong
Power spring.It is generally cylindrical to can be seen that support sleeve 161 in conjunction with Fig. 2, Figure 10 to Figure 12, it is hollow, the diameter of intermediate circular hole with
The diameter of contact ultrasonic sensor 16 is identical, and when installation is placed in vertically in the second space II of metal shell 11, support sleeve
16 outer surface is equipped with the lug boss 41 that projects radially outwardly, the substrate of the axial end face of lug boss 41 and PCB antenna 15 against,
Support sleeve 161 to be limited between partition and the substrate of PCB antenna 15.And a groove is provided on the cylindrical surface of support sleeve 161
42, contact ultrasonic sensor 16 is placed in the central cavity of support sleeve 161, and signal output connector 31 passes through from slot 42, is connect
Touch ultrasonic sensor 16 can slide up and down in central cavity, when the top of signal output connector arrival slot 42, as
The top that contact ultrasonic sensor 16 moves.
Elastic element 162 is placed in the central cavity of support sleeve 161, therefore its entire outer diameter is less than the center of support sleeve 161
Cavity, one end of elastic element 162 are placed in the bottom of the second space II of metal shell 11, and the other end and contact ultrasound pass
The bottom of sensor 16 contacts, and the entire length of elastic element 162 should be slightly longer than 16 bottom of contact ultrasonic sensor to support sleeve
The distance of 161 bottoms can guarantee when not having external force that contact ultrasonic sensor 16 is in support sleeve always in this way
161 top, the top of contact ultrasonic sensor 16 are slightly above the vertex of the arc structure of 11 bottom of metal shell, test
When, external acoustic-electric composite sensing 1 is attached on the disc insulator of GIS, the circular arc and basin of the bottom of metal shell 11 are made
Formula insulator is close to, and in this way under the elastic force of elastic element 162, so that the top of contact ultrasonic sensor 16 is tightly attached to benzvalene form exhausted
On edge, so that ultrasonic signal can also be tested while testing ultrahigh-frequency signal by realizing.
Figure 13 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram of the first connector and the second connector in embodiment.
As shown in figure 13, the first connector 13 and the second connector 14, which can be separately connected test equipment, can both carry out part
Discharge examination, wherein the first connector 13 receives ultrahigh-frequency signal, the second connector 14 receives ultrasonic signal.First connector 13 and second
Connector 14 is N connector.
Figure 14 is the external acoustic-electric compound sensor described in the utility model for the detection of GIS insulation defect in one kind
The structural schematic diagram of metallic briquette in embodiment.
It should be noted that in the present embodiment, metal shell 11 and metal cover board 12 can use lighter
Metal material, so that forming closed space inside external acoustic-electric compound sensor, can be shielded more effectively with being consistent
The contact surface of external electromagnetic interference signal, metal shell 11 and metal cover board 12 will guarantee smooth, make on metal shell 11
The first sealing ring and the second sealing ring 172 can preferably play a protective role
It, can be directly by external sound when needing to carry out short-term on-line monitoring with external acoustic-electric compound sensor 1
Electric compound sensor 1, which is tightly attached on disc insulator, implements monitoring, carries out long-term on-line monitoring if necessary, can use one
Restraint zone (in some embodiments, can be strap) passes through the slot of the accommodating restraint zone opened up in ear 112, is then wound on
It is fixed on disc insulator, can be realized and external acoustic-electric compound sensor 1 is fixed on disc insulator.
The ultrahigh-frequency signal and contact ultrasonic sensor 16 that different detection main band is received by PCB antenna 15 connect
Receipts ultrasonic signal, received ultrahigh-frequency signal and ultrasonic signal are sent to the first connector through the first cable, the second cable
13 and second connector 14, other equipment then can be sent to by the first connector 13 and the second connector and carry out data analysis
Processing.
It should be noted that prior art part is not limited to present specification institute in the protection scope of the utility model
The embodiment provided, all prior arts not contradicted with the embodiment of the utility model, including but not limited to first patent
Document, first public publication, formerly openly use etc., it can all be included in the protection scope of the utility model.
In addition, in this case in the combination of each technical characteristic and unlimited this case claim documented combination or
It is combination documented by specific embodiment, all technical characteristics that this case is recorded can be freely combined in any way
Or combine, unless generating contradiction between each other.
It is also to be noted that embodiment enumerated above is only specific embodiment of the utility model.This obvious reality
Above embodiments are not limited to novel, the similar variation or deformation made therewith are that those skilled in the art can be practical new from this
What type disclosure immediately arrived at or was easy to just to associate, it all should belong to the protection range of the utility model.
Claims (14)
1. a kind of PCB antenna comprising substrate and the antenna set on substrate surface, which is characterized in that the substrate has difference
First surface and second surface positioned at its two sides, the first surface are equipped with the first circular loop antenna for being connected in parallel and the
Two circular loop antennas, the second surface are equipped with the third circular loop antenna and the 4th circular loop antenna being connected in series, wherein the 4th circle
Loop antenna has the inner fovea part being recessed into it.
2. PCB antenna as described in claim 1, which is characterized in that first circular loop antenna and the second circular loop antenna it is straight
Diameter is identical, and the resonance frequency of first circular loop antenna and the second circular loop antenna is identical.
3. PCB antenna as described in claim 1, which is characterized in that the 4th circular loop antenna has symmetrical relative to one another
At least a pair of inner fovea part being arranged.
4. PCB antenna as described in claim 1, which is characterized in that the substrate is epoxy resin board.
5. a kind of external acoustic-electric compound sensor for the detection of GIS insulation defect, which is characterized in that including：
Metal shell, the interior partition that is equipped with are set on the partition with will be divided into the first space and second space inside metal shell
There is cable hole, the wall in first space is equipped with the first connector and the second connector；
Metal cover board is covered on the metal shell, and the first space is formed as enclosure space；
PCB antenna as described in any one of claim 1-4 is set in the second space；
Contact ultrasonic sensor is set in the second space, and the detection end face of the contact ultrasonic sensor is being examined
It is contacted under survey state with equipment under test；
First cable, first end are connect with the PCB antenna, and the cable hole that second end passes through on partition connects with described first
Head connection；
Second cable, first end are connect with the contact ultrasonic sensor, second end pass through partition on cable hole with
The second connector connection；
First wire rope wedge and the second wire rope wedge are set on partition and are located at the side in the first space, described
First wire rope wedge and the second wire rope wedge respectively correspond and contact company with the metal core of the first cable and the second cable
It connects.
6. external acoustic-electric compound sensor as claimed in claim 5, which is characterized in that it further includes：
Cylindrical support sleeve, offer thereon along its axial direction extend slot, the support sleeve be set to second space in and
Between the partition and the substrate of the PCB antenna, the contact ultrasonic sensor is sheathed in the support sleeve, is connect
The signal output connector of touch ultrasonic sensor is stretched out from the slot；
Elastic element is set in the support sleeve, and is set between the bottom face and partition of contact ultrasonic sensor；
Wherein, the substrate of the PCB antenna is equipped with hole, so that the detection end face of the contact ultrasonic sensor can be certainly
The substrate and support sleeve of PCB antenna stretch out, to contact with equipment under test；The elastic element on the axial direction of support sleeve to
Contact ultrasonic sensor applies pressure, to be pressed on equipment under test under detecting state.
7. external acoustic-electric compound sensor as claimed in claim 6, which is characterized in that the outer surface of the support sleeve is equipped with
The lug boss projected radially outwardly, the substrate of the axial end face of the lug boss and the PCB antenna is against limiting support sleeve
Between the partition and the substrate of the PCB antenna.
8. external acoustic-electric compound sensor as claimed in claim 5, which is characterized in that first connector and/or second
Connector is N connector.
9. external acoustic-electric compound sensor as claimed in claim 5, which is characterized in that the first wire rope wedge
And/or second wire rope wedge respectively include：The boss being fixed on partition and the metal being detachably connected with boss
Briquetting is formed with the hold-down apertures of the first cable of corresponding accommodating and/or the second cable between the metallic briquette and boss.
10. external acoustic-electric compound sensor as claimed in claim 9, which is characterized in that the aperture of the hold-down apertures is smaller
In the first cable and/or the diameter of the metal core of the second cable.
11. external acoustic-electric compound sensor as claimed in claim 9, which is characterized in that the metallic briquette is copper gold
Belong to briquetting.
12. external acoustic-electric compound sensor as claimed in claim 5, which is characterized in that first connector and/or second
The first sealing ring is equipped between connector and the wall in first space；And/or between the metal shell and metal cover board
Equipped with the second sealing ring.
13. external acoustic-electric compound sensor as claimed in claim 5, which is characterized in that the metal shell is located at second
The end face of this side of space is arranged to curved end.
14. external acoustic-electric compound sensor as claimed in claim 5, which is characterized in that the metal shell is located at second
The end face of this side of space has the ear stretched out outward, and the slot of accommodating restraint zone is offered in the ear, and/or
The ear is equipped with fastening bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820301128.5U CN208172154U (en) | 2018-03-05 | 2018-03-05 | A kind of PCB antenna and the external acoustic-electric compound sensor for the detection of GIS insulation defect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820301128.5U CN208172154U (en) | 2018-03-05 | 2018-03-05 | A kind of PCB antenna and the external acoustic-electric compound sensor for the detection of GIS insulation defect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208172154U true CN208172154U (en) | 2018-11-30 |
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ID=64385013
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820301128.5U Active CN208172154U (en) | 2018-03-05 | 2018-03-05 | A kind of PCB antenna and the external acoustic-electric compound sensor for the detection of GIS insulation defect |
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| CN (1) | CN208172154U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535609A (en) * | 2018-03-05 | 2018-09-14 | 上海交通大学 | A kind of PCB antenna and the external acoustic-electric compound sensor for the detection of GIS insulation defects |
-
2018
- 2018-03-05 CN CN201820301128.5U patent/CN208172154U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535609A (en) * | 2018-03-05 | 2018-09-14 | 上海交通大学 | A kind of PCB antenna and the external acoustic-electric compound sensor for the detection of GIS insulation defects |
| CN108535609B (en) * | 2018-03-05 | 2023-08-11 | 上海交通大学 | PCB antenna and external acoustic-electric composite sensor for GIS insulation defect detection |
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