CN109817432A - End shield connector and bushing shell for transformer - Google Patents
End shield connector and bushing shell for transformer Download PDFInfo
- Publication number
- CN109817432A CN109817432A CN201910258349.8A CN201910258349A CN109817432A CN 109817432 A CN109817432 A CN 109817432A CN 201910258349 A CN201910258349 A CN 201910258349A CN 109817432 A CN109817432 A CN 109817432A
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- Prior art keywords
- earthing rod
- compressing member
- end shield
- insulating part
- shield connector
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 11
- 238000011068 loading method Methods 0.000 claims description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 5
- 150000002739 metals Chemical class 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 13
- 229910052573 porcelain Inorganic materials 0.000 description 8
- 238000004382 potting Methods 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
This application discloses a kind of end shield connector and bushings shell for transformer, the end shield connector for transformer casing, bushing shell for transformer includes the base flange equipped with mounting hole, which includes: to be plugged in mounting hole and be the earthing rod of conduct piece, the lead-out wire connection of first end and end shield；Insulating part is set in the periphery of earthing rod so that the hole wall of mounting hole and the outer wall of earthing rod is isolated；Compressing member, including the peripheral wall for being set in the annular slab of insulating part periphery and extending from annular slab inner circumferential, when compressing member is assemblied on base flange and is located in earthing rod and insulating part in mounting hole, compressing member is electrically connected with base flange, and the peripheral wall of compressing member is far from base flange；Grounding base is provide with compressing member and the second end of earthing rod is housed in grounding base, is electrically connected compressing member and earthing rod.End shield joint structure provided by the present application is simple, is conducive to the miniaturization of bushing shell for transformer, and easy to assembly.
Description
Technical field
This application involves technical field of electric power transmission, more particularly to a kind of end shield connector and bushing shell for transformer.
Background technique
Bushing shell for transformer is the primary insulation device outside transformer tank comprising the elements such as capacitor core, insulating coating.Become
Depressor casing is typically necessary setting end shield connector, and the end shield in the end shield connector and capacitor core is that is, outermost in capacitor core
The electrical connection of one layer capacitance screen.In bushing shell for transformer operation, end shield needs to be grounded by end shield connector to guarantee bushing shell for transformer
Internal field strength distribution is uniform；When carrying out high-potting to bushing shell for transformer, capacitance is carried out by end shield connector, dielectric loss is surveyed
Amount.It is required according to GB4109, end shield connector needs to be resistant to the voltage of 3KV, it is therefore desirable to increase insulating materials on end shield connector.
Widespread practice is one small porcelain piece of socket on end shield connector at present, while the height of the small porcelain piece and diameter need to meet absolutely
Edge requirement.
Present inventor has found in long-term research, is socketed the way of small porcelain piece on end shield connector at present, by
It is larger in small porcelain piece volume, therefore it is unfavorable for the miniaturization of bushing shell for transformer, additionally, due to small porcelain piece is increased, to transformation
More stringent requirements are proposed for the leakproofness of device casing.
Summary of the invention
The purpose of the application is to provide a kind of end shield connector and bushing shell for transformer, can reduce the volume of end shield connector,
Convenient for the miniaturization of bushing shell for transformer, and it is easy to assembly.
In order to achieve the above objectives, the application the technical solution adopted is that: a kind of end shield connector, for transformer set are provided
Pipe, the bushing shell for transformer includes base flange, comprising: earthing rod, the earthing rod is conduct piece, including the extraction with end shield
The first end and the second end opposite with the first end of line connection, wherein described in being plugged on when the earthing rod
When in the mounting hole on base flange, the second end of the earthing rod is far from the mounting hole；Insulating part is set in institute
The periphery for stating earthing rod, for the hole wall of the mounting hole and the outer wall of the earthing rod to be isolated；Compressing member, including it is set in institute
State insulating part periphery annular slab and from the annular slab inner circumferential extend peripheral wall, wherein when the compressing member by across
The first bolt on the annular slab is assemblied on the base flange and is located in the earthing rod and the insulating part
When in the mounting hole, the compressing member is electrically connected with the base flange, and the peripheral wall of the compressing member is far from described
Base flange；Grounding base is provide with the compressing member and the second end of the earthing rod is housed in the grounding base
It is interior, and then it is electrically connected the compressing member and the earthing rod.
Wherein, the peripheral wall of the compressing member is equipped with external screw thread, and the grounding base is equipped with internal screw thread, and then by described
The cooperation of external screw thread and the internal screw thread and be located at the grounding base on the compressing member.
Wherein, the cross sectional shape of the mounting hole in its axial direction is ladder-like, so that the mounting hole is in its axial direction
A loading end is formed, when the compressing member is assemblied on the base flange, the insulating part is at least partly clamped in
Between the annular slab and the loading end, and then realizes and the insulating part and the earthing rod are located in the mounting hole
It is interior.
Wherein, between the grounding base and the end face of the compressing member, the end face of the compressing member and the insulating part it
Between, between the compressing member and the end face of the base flange, between the insulating part and the loading end be equipped with sealing ring.
Wherein, the insulating part is set in the periphery of the earthing rod by pouring technology.
Wherein, the outer wall that the earthing rod is contacted with the insulating part is equipped with several first grooves.
Wherein, the material of the insulating part is polytetrafluoroethylene (PTFE) or epoxy resin.
Wherein, the second end of the earthing rod is equipped with multiple along elastic sheet metal, and the elastic sheet metal prolongs
Stretch that direction is identical as the extending direction of the earthing rod, the both ends of the elastic sheet metal are fixed on the earthing rod, institute
The middle part for stating elastic sheet metal is expanded to the direction far from the earthing rod, when the second end of the earthing rod is housed in
When in the grounding base, multiple elastic sheet metals are resiliently supported between the earthing rod and the grounding base.
Wherein, the lead-out wire of the end shield is wrapped on the second bolt, the first end of the earthing rod be equipped with
Corresponding the second groove matched of second bolt, so that second bolt is detachably assemblied in second groove,
And then realize the connection between the lead-out wire of the end shield and the first end of the earthing rod.
In order to achieve the above objectives, another technical solution that the application uses is: providing a kind of bushing shell for transformer, the change
Depressor casing includes above-mentioned end shield connector.
The beneficial effect of the application is: end shield connector in the application by setting earthing rod, insulating part, compressing member and
Grounding base, can when carrying out high-potting to bushing shell for transformer carry out capacitance, dielectric loss measurement, and bushing shell for transformer just
Often end shield is grounded when operation, guarantees that the field strength distribution inside bushing shell for transformer is uniform.Simultaneously compared with prior art, the application without
Small porcelain piece need to be set, and structure is simple, compact, and in assembly, it is only necessary to successively assemble earthing rod, insulating part, compressing member, in turn
Compressing member is fixed on base flange by the first bolt, then grounding base is located on compressing member, it is convenient, fast
It is prompt.
In addition insulating part uses pouring technology to cast directly over the periphery of earthing rod in the application end shield connector, can guarantee
Secured, good seal performance is contacted between earthing rod and insulating part, to no longer need to install sealing ring additional between the two, effectively reduces end
Shield the volume of connector.
Further, the outer wall that earthing rod is contacted with insulating part be equipped with several first grooves, can increase earthing rod and absolutely
The contact area of edge part guarantees contact fastness between the two.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.Wherein:
Fig. 1 is cut-away section structural schematic diagram when the application end shield connector is mounted on bushing shell for transformer；
Fig. 2 is the schematic diagram of the section structure of earthing rod and insulating part in Fig. 1；
Fig. 3 is the schematic diagram of the section structure of compressing member in Fig. 1；
Fig. 4 is the enlarged diagram in Fig. 2 at A；
Fig. 5 is the cut-away section structural schematic diagram of base flange in Fig. 1；
Fig. 6 is the schematic diagram of the section structure of grounding base in Fig. 1；
Fig. 7 is the schematic diagram of the section structure of one embodiment of the application bushing shell for transformer；
Fig. 8 is the enlarged diagram in Fig. 7 at B.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, rather than whole embodiments.Based on this
Embodiment in application, those of ordinary skill in the art are obtained every other under the premise of not making creative labor
Embodiment shall fall in the protection scope of this application.
It is that cut-away section structure when the application end shield connector is mounted on bushing shell for transformer is shown in conjunction with Fig. 1 to Fig. 6, Fig. 1
It is intended to, Fig. 2 is the schematic diagram of the section structure of earthing rod and insulating part in Fig. 1, and Fig. 3 is the cross-section structure signal of compressing member in Fig. 1
Figure, Fig. 4 is the enlarged diagram in Fig. 2 at A, and Fig. 5 is the cut-away section structural schematic diagram of base flange in Fig. 1, and Fig. 6 is Fig. 1
The schematic diagram of the section structure of middle grounding base.End shield connector in the application is arranged on bushing shell for transformer, is specially mounted on bottom
On seat flange, with the end shield in capacitor core, i.e., outermost capacitance plate electrical connection in capacitor core, in transformer set
End shield is grounded when pipe is run and guarantees that the field strength distribution of capacitor core is uniform, and when carrying out high-potting to transformer set
Pipe carries out capacitance, dielectric loss measurement.Specifically, end shield connector 100 include: earthing rod 110, insulating part 120, compressing member 130 with
And grounding base 140.
Earthing rod 110 is conduct piece, including the first end 1101 and the second end 1102 being oppositely arranged, earthing rod 110
First end 1101 connect with the lead-out wire 111 of end shield (not shown), and connect with first end 1101 when lead-out wire 111
When, it is directly electrically connected between lead-out wire 111 and earthing rod 110, wherein when earthing rod 110 is plugged on the peace on base flange 150
When filling in hole 151, the second end 1102 of earthing rod 110 is far from mounting hole 151；Insulating part 120 is made of insulating material, and is arranged
In the periphery of earthing rod 110, for the hole wall of mounting hole 151 and the outer wall of earthing rod 110 to be isolated, that is to say, that insulating part 120
Setting make to be not directly contacted between earthing rod 110 and base flange 150；Compressing member 130 includes being set in 120 periphery of insulating part
Annular slab 131 and from 131 inner circumferential of annular slab extend peripheral wall 132, when end shield connector 100 is mounted on bushing shell for transformer
When, compressing member 130 makes earthing rod 110 by passing through the first bolt 160 on annular slab 131 and being assemblied on base flange 150
And insulating part 120 is located in mounting hole 151, and when compressing member 130 is fixed on base flange 150, compressing member 130 with
Base flange 150 is electrically connected, and the peripheral wall 132 of compressing member 130 is far from base flange 150；Grounding base 140 is provide with compressing member 130 simultaneously
The second end 1102 of earthing rod 110 is housed in grounding base 140, and then is electrically connected compressing member 130 and earthing rod 110,
That is when grounding base 140 is located on compressing member 130, between base flange 150, grounding base 140 and earthing rod 110
Electrical connection.In an application scenarios, compressing member 130, grounding base 140 are identical as earthing rod 110, are conduct piece, and earthing rod
110, compressing member 130 and grounding base 140 can be made of materials such as aluminium, copper, stainless steels.
Wherein, end shield connector 100 is pre-assembled before bushing shell for transformer normal operation: earthing rod 110 is plugged on bottom
In the mounting hole 151 of seat flange 150, and it connect its first end 1101 with the lead-out wire 111 of end shield, then by insulating part
120 are set in the outside of earthing rod 110, further, compressing member 130 are fixed on base flange 150 by the first bolt 160
It is above located in earthing rod 110 and insulating part 120 in mounting hole 151, finally grounding base 140 is located on compressing member 130
And it is housed in the second end 1102 of earthing rod 110 in grounding base 140.After assembling end shield connector 100, the bottom of due to
Seat flange 150 be grounded by transformer case (not shown), therefore earthing rod 110 pass sequentially through grounding base 140, compressing member 130,
End shield, is grounded by base flange 150 and transformer case ground connection to realize, final to guarantee inside bushing shell for transformer 100
Field strength distribution is uniform.And when carrying out high-potting to bushing shell for transformer, grounding base 140 is directly dismantled, at this time due to earthing rod
It is insulated between 110 and base flange 150 by insulating part 120, therefore earthing rod 110 is no longer electrically connected with base flange 150, into
And end shield is no longer grounded, may finally measuring transformer casing insulation performance.And after high-potting, directly compressing
Grounding base 140 is assembled on the outside of part 130 can guarantee that end shield is grounded again.
From the above, it is seen that the end shield connector 100 in present embodiment is without increasing small porcelain piece, structure is simple,
When being conducive to the miniaturization of bushing shell for transformer, and assembling, earthing rod 110 and insulating part 120 are being placed on mounting hole 151
It is interior and after being arranged compressing member 130, the first bolt 160 and grounding base 140 are directly screwed, it is easy to assembly.In addition it is carrying out
When high-potting, it need to only dismantle and remove grounding base 140, and at this time since grounding base 140 and earthing rod 110 are in discrete state,
Staff can observe directly the case where earthing rod 110, to be replaced in time in its existing defects, it is ensured that ground connection can
By property.
In an application scenarios, earthing rod 110 is cylindrical body, and in order to further reduce the volume of end shield connector 100, with
And guarantee the leakproofness between earthing rod 110 and insulating part 120 and avoid external humidification, dust etc. that invasion, insulating part 120 pass through
Pouring technology is directly set in the periphery of earthing rod 110.Wherein when preparing end shield connector 100, earthing rod 110 is put into machine
It is interior so directly earthing rod 110 outside be poured the insulating materials such as polytetrafluoroethylene (PTFE) or epoxy resin, and then formed insulating part
120.By forming insulating part 120 in the directly casting of 110 outside of earthing rod, make to contact jail between earthing rod 110 and insulating part 120
Gu, good seal performance and compact-sized, there is no need to install sealing ring additional again, the volume of end shield connector 100 can be effectively reduced.
Certainly in other application scenarios, earthing rod 110 can also be independent of one another with insulating part 120, is detachably assembled together, herein
With no restrictions.
Further, in the application scenarios in order to increase the contact area between earthing rod 110 and insulating part 120 to increase
Contact fastness between the two by force, referring to Fig.2, the outer wall that earthing rod 110 is contacted with insulating part 120 is equipped with several first grooves
112.Wherein the first groove 112 around earthing rod 110 be arranged, quantity can for 1,2,3 or more, herein not
It is limited.In addition the application to the depth of the first groove 112 also with no restrictions, can be set by designer according to specific requirements
Meter.
In an application scenarios, for the ease of replacing end shield connector 100, with continued reference to Fig. 1 and 2, the lead-out wire 111 of end shield
It is wrapped on the second bolt 170, correspondingly, the first end 1101 of earthing rod 110 is equipped with match corresponding with the second bolt 170
The second groove 113, wherein the second bolt 170 is detachably assemblied in the second groove 113.Specifically, the lead-out wire 111 of end shield
One end be welded in end shield, the other end is wrapped on the second bolt 170, thus by the second bolt 170 assemble in the second groove
The connection between the lead-out wire 111 of end shield and the first end 1101 of earthing rod 110 is realized in 113.In the application scenarios, lead to
It crosses and the lead-out wire 111 of end shield is wrapped on the second bolt 170, when because the reasons such as aging, accident are needed to end shield connector 100
When being replaced, it can be directly separated the second bolt 170 and earthing rod 110, it is easy to operate.
In an application scenarios, for the ease of the assembly of end shield connector 100, grounding base 140 and compressing member 130 pass through screw thread
Connection.Refering to fig. 1, Fig. 3 and Fig. 6, the peripheral wall 132 of compressing member 130 are equipped with external screw thread 1321, and grounding base 140 is equipped with internal screw thread (figure
6 do not show), and then grounding base 140 is located on compressing member 130 by the cooperation of external screw thread 1321 and internal screw thread.Certainly exist
In other application scenarios, grounding base 140 and compressing member 130 can also be connect by the other modes such as buckling, being interference fitted.
Refering to fig. 1, Fig. 2 and Fig. 4, in another embodiment of the application, in order to guarantee that earthing rod 110 is housed in grounding base
The second end 1102 of being electrically connected between grounding base 140 when in 140, earthing rod 110 is equipped with multiple elastic sheet metals 190,
The extending direction of elastic sheet metal 190 is identical as the extending direction of earthing rod 110.
The both ends of elastic sheet metal 190 are fixed on earthing rod 110, when not by external force, in elastic sheet metal 190
Portion 191 is expanded to the direction far from earthing rod 110, when the second end 1102 of earthing rod 110 is housed in grounding base 140,
Grounding base 140 applies active force to elastic sheet metal 190, so that multiple elastic sheet metals 190 be enable to be resiliently supported at ground connection
Between column 110 and grounding base 140, and then guarantee being electrically connected between earthing rod 110 and grounding base 140.Wherein, multiple elasticity gold
Belong to piece 190 to be evenly spaced on along the circumferential direction of earthing rod 110, and in order to which after repeatedly plug grounding base 140, multiple elasticity are golden
Belong to piece 190 and be still able to maintain good elasticity, elastic sheet metal 190 is made of the material of the satisfactory mechanical properties such as copper.
Refering to fig. 1 and Fig. 5, in another embodiment of the application, the cross sectional shape of mounting hole 151 in its axial direction is rank
Scalariform, so that mounting hole 151 forms a loading end 1511 in its axial direction.
When compressing member 130 is assemblied on base flange 150, insulating part 120 be at least partly clamped in annular slab 131 with
Between loading end 1511, and then realizes and insulating part 120 and earthing rod 110 are located in mounting hole 151.That is, passing through
The clamping of compressing member 130 and loading end 1511, earthing rod 110 and insulating part 120 can not be transported further along the axial direction of mounting hole 151
It is dynamic.In addition to press earthing rod 110 and insulating part 120 can not also along the radial motion of mounting hole 151, insulating part 120
The surrounding of tight 1511 retained part of part 130 and loading end be bonded with the hole wall of mounting hole 151, thus guarantee earthing rod 110 with it is exhausted
Edge part 120 can not move in mounting hole 151, that is, be located in mounting hole 151.
With continued reference to Fig. 1, in the application scenarios, in order to effectively avoid extraneous moisture, dust etc. from invading, grounding base 140
It is equipped with the first sealing ring 181 between the end face of compressing member 130, second is equipped between compressing member 130 and the end face of insulating part 120
Sealing ring 182 is equipped with third sealing ring 183, insulating part 120 and loading end between compressing member 130 and the end face of base flange 150
The 4th sealing ring 184 is equipped between 1511, that is to say, that this application scene guarantees end shield connector 100 by four-layer seal circle
Sealing performance.Wherein the shape of each sealing ring can be round, ellipse, rectangle or other shapes, herein with no restrictions.
It is the schematic diagram of the section structure of one embodiment of the application bushing shell for transformer refering to Fig. 7 and Fig. 8, Fig. 7, Fig. 8 is Fig. 7
Enlarged view at middle B.The bushing shell for transformer 200 includes end shield connector 210.
Wherein end shield connector 210 is identical as 100 structure of end shield connector in any of the above-described embodiment, for details, reference can be made to
Above embodiment, details are not described herein.
It is understood that due to the end shield connector 210 in present embodiment and the end in any of the above-described embodiment
It is identical to shield 100 structure of connector, therefore 200 structure of bushing shell for transformer in present embodiment is simple, it is small in size.
To sum up, the end shield connector in the application passes through setting earthing rod, insulating part, compressing member and grounding base, energy
It is enough that capacitance, dielectric loss measurement are carried out to bushing shell for transformer when carrying out high-potting, and when bushing shell for transformer operates normally
End shield is grounded, guarantees that the field strength distribution inside bushing shell for transformer is uniform.Simultaneously compared with prior art, that no setting is required is small by the application
Porcelain piece, structure is simple, compact, and in assembly, it is only necessary to successively assemble earthing rod, insulating part, compressing member, and then by compressing member
It is fixed on base flange by the first bolt, then grounding base is located on compressing member, it is convenient, fast.
In addition insulating part uses pouring technology to be cast in the periphery of earthing rod in the application end shield connector, can guarantee to be grounded
Secured, good seal performance is contacted between column and insulating part, to no longer need to install sealing ring additional between the two, is effectively reduced end shield and is connect
The volume of head.
Further, the outer wall that earthing rod is contacted with insulating part be equipped with several first grooves, can increase earthing rod and absolutely
The contact area of edge part guarantees contact fastness between the two.
The foregoing is merely presently filed embodiments, are not intended to limit the scope of the patents of the application, all to utilize this
Equivalent structure or equivalent flow shift made by application specification and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field similarly includes in the scope of patent protection of the application.
Claims (10)
1. a kind of end shield connector, for transformer casing, the bushing shell for transformer include base flange characterized by comprising
Earthing rod, the earthing rod are conduct piece, the first end connecting including the lead-out wire with end shield and with described first
The opposite the second end in end, wherein when in the mounting hole that the earthing rod is plugged on the base flange, the ground connection
The second end of column is far from the mounting hole；
Insulating part is set in the periphery of the earthing rod, for the hole wall of the mounting hole and the outer wall of the earthing rod to be isolated；
Compressing member, including be set in the insulating part periphery annular slab and from the annular slab inner circumferential extend peripheral wall,
In, when the compressing member makes the ground connection by passing through the first bolt on the annular slab and being assemblied on the base flange
When column and the insulating part are positioned in the mounting hole, the compressing member is electrically connected with the base flange, and the pressure
The peripheral wall of tight part is far from the base flange；
Grounding base is provide with the compressing member and the second end of the earthing rod is housed in the grounding base, into
And it is electrically connected the compressing member and the earthing rod.
2. end shield connector according to claim 1, which is characterized in that
The peripheral wall of the compressing member is equipped with external screw thread, and the grounding base is equipped with internal screw thread, so by the external screw thread and
The cooperation of the internal screw thread and be located at the grounding base on the compressing member.
3. end shield connector according to claim 1, which is characterized in that
The cross sectional shape of the mounting hole in its axial direction be it is ladder-like held so that the mounting hole forms one in its axial direction
Section,
When the compressing member is assemblied on the base flange, the insulating part be at least partly clamped in the annular slab with
Between the loading end, and then realize the insulating part and earthing rod positioning in the mounting hole.
4. end shield connector according to claim 3, which is characterized in that
Between the grounding base and the end face of the compressing member, between the compressing member and the end face of the insulating part, the pressure
Sealing ring is equipped between tight part and the end face of the base flange, between the insulating part and the loading end.
5. end shield connector according to claim 1, which is characterized in that
The insulating part is set in the periphery of the earthing rod by pouring technology.
6. end shield connector according to claim 5, which is characterized in that
The outer wall that the earthing rod is contacted with the insulating part is equipped with several first grooves.
7. end shield connector according to claim 5, which is characterized in that
The material of the insulating part is polytetrafluoroethylene (PTFE) or epoxy resin.
8. end shield connector according to claim 1, which is characterized in that
The second end of the earthing rod be equipped with multiple elastic sheet metals, the extending direction of the elastic sheet metal with it is described
The extending direction of earthing rod is identical, and the both ends of the elastic sheet metal are fixed on the earthing rod, the elastic sheet metal
Middle part to far from the earthing rod direction expand, when the second end of the earthing rod is housed in the grounding base
When, multiple elastic sheet metals are resiliently supported between the earthing rod and the grounding base.
9. end shield connector according to claim 1, which is characterized in that
The lead-out wire of the end shield is wrapped on the second bolt, and the first end of the earthing rod is equipped with and second spiral shell
Corresponding the second groove matched of bolt, so that second bolt is detachably assemblied in second groove, and then realizes institute
State the connection between the lead-out wire of end shield and the first end of the earthing rod.
10. a kind of bushing shell for transformer, which is characterized in that the bushing shell for transformer includes as described in any one of claim 1 to 9
End shield connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910258349.8A CN109817432A (en) | 2019-04-01 | 2019-04-01 | End shield connector and bushing shell for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910258349.8A CN109817432A (en) | 2019-04-01 | 2019-04-01 | End shield connector and bushing shell for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109817432A true CN109817432A (en) | 2019-05-28 |
Family
ID=66611177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910258349.8A Pending CN109817432A (en) | 2019-04-01 | 2019-04-01 | End shield connector and bushing shell for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109817432A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112489901A (en) * | 2020-11-27 | 2021-03-12 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Be used for direct current wall bushing to use end screen extraction element |
| CN113903535A (en) * | 2021-09-01 | 2022-01-07 | 深圳供电局有限公司 | High-voltage bushing tap grounding device |
| CN113963913A (en) * | 2021-08-26 | 2022-01-21 | 搏世因（北京）高压电气有限公司 | Plug-in lead connector |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2003757A1 (en) * | 2007-06-15 | 2008-12-17 | Hauff-Technik GmbH & Co. KG | Ground feedthrough |
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| CN105810390A (en) * | 2016-04-06 | 2016-07-27 | 西安思坦电气技术有限公司 | Sleeve pipe end screen leading-out device of dry type transformer |
| CN209544114U (en) * | 2019-04-01 | 2019-10-25 | 江苏神马电力股份有限公司 | End shield connector and bushing shell for transformer |
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| WO2015180001A1 (en) * | 2014-05-29 | 2015-12-03 | 国家电网公司 | Condenser bushing tap grounding device |
| CN104200977A (en) * | 2014-08-04 | 2014-12-10 | 北京华电瑞通电力工程技术有限公司 | Current transformer type wall bushing |
| CN204614584U (en) * | 2015-05-15 | 2015-09-02 | 深圳供电局有限公司 | A kind of end shield earthing device for oily formula sleeve pipe |
| CN204991981U (en) * | 2015-07-26 | 2016-01-20 | 国家电网公司 | Reliable transformer high -tension bushing end screen earthing device |
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| CN105810390A (en) * | 2016-04-06 | 2016-07-27 | 西安思坦电气技术有限公司 | Sleeve pipe end screen leading-out device of dry type transformer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112489901A (en) * | 2020-11-27 | 2021-03-12 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Be used for direct current wall bushing to use end screen extraction element |
| CN112489901B (en) * | 2020-11-27 | 2022-10-25 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Be used for direct current wall bushing to use end screen extraction element |
| CN113963913A (en) * | 2021-08-26 | 2022-01-21 | 搏世因（北京）高压电气有限公司 | Plug-in lead connector |
| CN113963913B (en) * | 2021-08-26 | 2022-06-21 | 搏世因（北京）高压电气有限公司 | Plug-in lead connector |
| CN113903535A (en) * | 2021-09-01 | 2022-01-07 | 深圳供电局有限公司 | High-voltage bushing tap grounding device |
| CN113903535B (en) * | 2021-09-01 | 2023-08-25 | 深圳供电局有限公司 | High-voltage bushing end screen grounding device |
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