CN207442385U - Wall bushing component - Google Patents
Wall bushing component Download PDFInfo
- Publication number
- CN207442385U CN207442385U CN201721225652.0U CN201721225652U CN207442385U CN 207442385 U CN207442385 U CN 207442385U CN 201721225652 U CN201721225652 U CN 201721225652U CN 207442385 U CN207442385 U CN 207442385U
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- China
- Prior art keywords
- conducting rod
- conductive
- wall bushing
- pierced
- conducting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007789 sealing Methods 0.000 claims description 44
- 238000009434 installation Methods 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Insulators (AREA)
Abstract
The utility model provides a kind of wall bushing component, wall bushing component includes casing, it is sealed on the connecting flange of casing both ends end and the conducting rod with casing coaxial arrangement, there is the conducting rod conducting rod being pierced by from the conducting rod perforation of connecting flange to be pierced by section, the stretching device for being equipped with to be axially stretched conducting rod backwards to the one side of casing of the connecting flange, wall bushing component further include be sealingly fastened on connecting flange conducting rod is pierced by section and stretching device is located at interior end part seal cover, the end part seal cover has conducting element derived from the electric current on conducting rod, the conducting rod is pierced by axial elasticity between section and conducting element and is supported by elastic conduction connection structure.Elastic conduction connection structure is flexibly supported between conducting rod and conducting element, the length deformation amount of conducting rod is absorbed when conducting rod expands with heat and contract with cold and length change occurs, the variation of the axial displacement of conducting rod has been adapted to, expanding with heat and contract with cold for conducting rod is made not had an impact to seal closure.
Description
Technical field
The utility model is related to a kind of wall bushing components.
Background technology
At present, foreign countries, which can produce direct-current wall bushing and can be applied to the producer in high voltage direct current transmission project, only has
Several families such as Sweden ABB, SIEMENS HSP, Italy P＆V.The more direct-current wall bushing of domestic and international application is main at present
There are three types of：First, epoxy resin dipping capacitor core aerating body extension wall bushing structure, ABB AB use the structure shape early stage
Formula；Second is that dry sleeve afterbody is butted into wall bushing structure, Siemens Company uses the structure type；Third, pure SF6Gas
Wall bushing structure.Pure SF6Gas wall bushing structure compared with other two schemes have equal laminated structure it is easy to implement, weight
Relatively gently, the advantages of simple in structure, good mechanical property, radiating condition is good, and through-current capability is strong.
At present, ABB AB and Alstom and the direct-current wall bushing of some domestic manufacturers use pure SF6Gas is worn
The technical solution of wall sleeve, set inner coaxial tube pass through conducting rod, pure SF are filled in casing6Gas is to prevent conducting rod from being hit with casing
Wear, such casing by be from now on ultrahigh voltage direct current wall bushing develop main flow direction.But direct current SF6Gas wall bushing has
There is more problem, such as in order to avoid breakdown problem, casing diameter is usually larger, in entire casing one whole conducting rod is set to cause
The length of conducting rod is longer, the conducting rod insufficient rigidity of overlength, when being horizontally mounted, conducting rod middle part under the influence of its dead weight
Can it is sagging, it is poor so as to cause the concentricity of conducting rod and casing the problem of, under extra-high voltage, field strength distribution is extremely difficult to preferable shape
State.Current solution is typically that the conducting rod of overlength is divided into two sections, and two sections of conducting rods are docked in end, and at docking
The support insulator being supported between casing and conducting rod is set to be supported.But during using post insulator subscheme, design, system
Make, install, many problems such as insulating reliability are required for solving, can seriously reduce the reliability of product.
The Chinese patent document that application publication number is CN105119217A, the applying date is on 09 23rd, 2015 discloses one
Kind high-voltage wall bushing, as shown in Figure 1, the high-voltage wall bushing includes the set with the accommodating chamber for housing insulation medium
Pipe 1, be arranged on casing 1 end face connecting flange 3 and with casing 1 be coaxially disposed conducting rod 2, the conducting rod 2 for conduction
Body.The center of connecting flange 3 is equipped with the conducting rod perforation passed through for conducting rod 2, and conducting rod 2 slides through the conducting rod perforation
And extend casing 1 and form conducting rod and be pierced by section, the high-voltage wall bushing further include the outside that is arranged on casing 1 with it is described
The stretching device that conducting rod 2 connects, the stretching device include being pierced by stop catch plate 6 and the elasticity that the end of section is connected with conducting rod
The spring 5 being supported between the stop catch plate 6 and the connecting flange 3, spring 5 be set in the conducting rod be pierced by section and its
Elastic force acts on conducting rod 2 through stop catch plate 6, and the axial pulling force that stretching device applies conducting rod 2 is to overcome conducting rod 2 non-
The sagging problem caused by self gravitation during right angle setting so that conducting rod 2 can be maintained at as far as possible in non-perpendicular installation
Linear state.When using high-voltage wall bushing, dielectric such as SF is filled with into the accommodating chamber6Or transformer oil is to play
The insulating effect of radial direction.
But in above-mentioned high pressure suit through walls, conducting rod 2 slides through connecting flange 3 and extends the outer of casing 1
Portion is slidingly sealed so must be taken between connecting flange 3 and conducting rod 2, and conducting rod is realized using sealing shroud 4 in said program
Being slidingly sealed between 2 and connecting flange 3, and the sealing effect being slidingly sealed is poor, it is exhausted in dielectric leakage rear sleeve 1
The decline of edge ability may result in larger security incident.
Utility model content
The purpose of this utility model is to provide a kind of wall bushing component, to solve wall bushing of the prior art
The problem of effect is poor is slidingly sealed between conducting rod and the connecting flange of cannula tip.
To achieve the above object, a kind of technical solution of wall bushing component of the utility model is：A kind of wall bushing group
Part including casing, is sealed on the connecting flange of casing both ends end and the conducting rod with casing coaxial arrangement, the conducting rod tool
There is the conducting rod being pierced by from the conducting rod perforation of connecting flange to be pierced by section, the connecting flange is equipped with backwards to the one side of casing
For being axially stretched the stretching device of conducting rod, wall bushing component further include be sealingly fastened on connecting flange by conducting rod
It is pierced by section and stretching device is located at interior end part seal cover, the end part seal cover has will be derived from the electric current on conducting rod
Conducting element, the conducting rod are pierced by axial elasticity between section and conducting element and are supported by elastic conduction connection structure.
The beneficial effects of the utility model are：Wall bushing component provided by the utility model includes casing and arranged on set
Conducting rod in pipe has connecting flange in the end closure of casing, and the end of conducting rod forms conduction by being pierced by connecting flange
Bar is pierced by section, sets stretching device backwards to the one side of casing in connecting flange, by the effect of the pretension of stretching device, makes
Conducting rod is straightened and then is normally used.Sealed set has end part seal cover, end part seal cover energy on connecting flange
Enough that stretching device and conducting rod are pierced by section is located at, end part seal cover is equipped with conducting element, between conducting rod and conducting element
Flexibly support flexible conduction connecting structure.End part seal cover can prevent dielectric from revealing with connecting flange sealing cooperation.
Elastic conduction connection structure in the utility model is flexibly supported between conducting rod and conducting element, is expanded with heat and contract with cold hair in conducting rod
The length deformation amount of conducting rod is absorbed during raw length change, the variation of the axial displacement of conducting rod has been adapted to, has made the heat of conducting rod
Swollen shrinkage will not have an impact seal closure, the relation of fricton-tight cooperation between conducting rod and seal closure.On this basis, leading
Electric pole is pierced by section and the external of stretching device sets seal closure that can realize static sealing, and the sealing effect of static seal is better than slip
The sealing effect of sealing.
Further, stretching device includes being pierced by the conductive stop catch plate and be supported on conductive gear that section is fixedly linked with conducting rod
Only more than two elastic supporting member for supporting optical member between plate and connecting flange, elastic conduction connection structure are flexibly supported in conductive stop catch plate
Between conducting element.
Further, elastic supporting member for supporting optical member includes guide rod, is arranged with spring on guide rod, the spring is supported in connection method
Between blue and conductive stop catch plate.
Further, one end of the guide rod is fixed on connecting flange, and the other end in conductive stop catch plate by being pierced by, guide rod
In by being installed on one end for being pierced by conductive stop catch plate prevent conductive stop catch plate by the screwed retaining ring deviate from guide rod.
Further, end part seal cover includes sealing cover body, and conducting element includes putting down with connecting flange in sealing cover body
The sealing cover body conductive segment of row arrangement, elastic conduction connection structure resilient support are conductive in conductive stop catch plate and sealing cover body
Between section.
Further, elastic conduction connection structure includes resilient U-shaped conductive strips, and the two side arms of resilient U-shaped conductive strips are distinguished
Corresponding to be fixed on sealing cover body conductive segment and conductive stop catch plate, sealing cover body conductive segment is equipped with to install elastic U
The installation operation hole of shape conductive strips.
Further, elastic conduction connection structure includes resilient U-shaped conductive strips, and the two side arms of resilient U-shaped conductive strips are distinguished
It is corresponding to be fixed on conducting element and conductive stop catch plate.
Further, conducting element further includes the conductive seal in the capping installation operation hole outside sealing cover body
Flange and the terminal plate on conductive seal flange.
Further, the conducting rod is hollow structure, and the end that conducting rod is pierced by section is equipped with conductive sealing plate, conductive sealing plate
It is bonded and is bolted to connection with conductive stop catch plate.
Description of the drawings
Fig. 1 is the schematic diagram of wall bushing in the prior art；
Fig. 2 is the schematic cross-sectional view of the utility model wall bushing assembly embodiment；
Fig. 3 is stop catch plate in Fig. 2 and the enlarged drawing at end part seal cover；
Fig. 4 is the front view of conductive strips in the utility model wall bushing assembly embodiment；
Fig. 5 is the top view of Fig. 4；
Fig. 6 is the schematic diagram after the both ends bending of Fig. 4.
Specific embodiment
The embodiment of the utility model is described further below in conjunction with the accompanying drawings.
A kind of specific embodiment of the wall bushing component of the utility model, as shown in Figures 2 to 6, wall bushing component
Insulating sleeve 2 including middle cylinder 1 and positioned at the axial both ends of middle cylinder 1, middle cylinder 1 and insulating sleeve 2 collectively constitute
Casing has and hollow conducting rod 3 can be equipped in accommodating chamber, in casing with the accommodating chamber of housing insulation medium in casing
Both ends open at sealing be installed with connecting flange 4, offered on connecting flange 4 conducting rod perforation, one end of conducting rod 3
By being pierced by the conducting rod perforation on connecting flange 4, the part being pierced by forms conducting rod and is pierced by section.Wall bushing component also wraps
Stretching device is included, stretching device includes the stop catch plate 10 being arranged in parallel with connecting flange 4, and the periphery of stop catch plate 10 passes through guide rod 6
It is connected with connecting flange 4, in the present embodiment, the quantity of guide rod 6 is two, and one end of guide rod 6 is fixed on connecting flange 4, separately
Stop catch plate 10 is run through in one end, is pierced by guide rod 6 on one end of stop catch plate 10 and is installed with screwed retaining ring 12, prevents stop catch plate 10 by leading
Deviate from bar 6.Guide rod 6 outer cover equipped with spring 11, spring 11 be elastically supported connecting flange 4 and stop catch plate 10 it
Between, stop catch plate 10 is made to be subject to the thrusting action power of spring.The end that conducting rod is pierced by section is equipped with and is used for blocking conducting rod one end and opening
The sealing plate 13 of mouth, sealing plate 13 are bonded with stop catch plate 10 and realize that fastening is connected by fastening bolt.
Bolt seal is connected with end part seal cover 5 on connecting flange 4, and end part seal cover 5 by stretching device and can be led
Electric pole is pierced by Duan Jun is located at.End part seal cover 5 includes sealing cover body 51, and installation behaviour is offered on sealing cover body 51
Make hole.The one side being arranged in parallel on sealing cover body 51 with connecting flange 4 is known as sealing cover body conductive segment, in sealing cover body
Conductive seal flange 9 is installed on the outside of conductive segment, conductive seal flange 9 covers the installation operation hole, conductive seal method
Terminal plate 8 is fixed on orchid 9, conductive seal flange 9, terminal plate 8 and sealing cover body conductive segment have collectively constituted conducting element.
In the present embodiment, seal closure 5, stop catch plate 10, sealing plate 13 are conductive structure.Stop catch plate 10 and sealing cover body conductive segment it
Between be pressed with elastic connection structure, the conductive strips 7 that the elastic connection structure in the present embodiment forms for the crimping of a plurality of soft copper band, bullet
Property connection structure has the function of certain telescopic folding, and elastic connection structure can realize stop catch plate and sealing cover body conductive segment
Be conductively connected, and then realize being conductively connected between conducting rod and conducting element.As seen from Figure 3, the quantity of conductive strips 7 is
It two and takes the shape of the letter U.
As shown in Figure 4,5, 6, conductive strips 7 are formed the structure of conductive strips 7 including a plurality of copper strips, and the both ends of a plurality of copper strips are pressed
Tightly, for being connected with seal closure 5 and stop catch plate 10.Conductive strips 7 include the first pontes 71 that is connected with seal closure 5 and with gear
The only connected second connecting portion point of plate 10 72 and the flexible elastic part 73 positioned at centre.Wherein, in the first connection
Offers screw perforation in part 71 and second connecting portion points 72, during assembling, screw is passed through the both ends of conductive strips 7 point behind the hole
Seal closure 5 and stop catch plate 10 are not fixed on.State when conductive strips use is illustrated in figure 6, conductive strips 7 have certain bullet
Property, can flexible deformation be carried out according to the distance between stop catch plate 10 and seal closure 5.Specific mounting means is, by conductive strips 7
One of side arm be fixed by screws on sealing cover body conductive segment or stop catch plate 10, another side arm freely overhangs,
When stretching device assembling is completed to assemble seal closure 5, stop catch plate 10 and the relative movement of seal closure 5 can be by conductive strips 7
Then axial compression will be led between sealing cover body conductive segment and stop catch plate 10 by the installation operation hole on sealing cover body
The another side of electric band 7 is fixed by screws on stop catch plate 10 or sealing cover body conductive segment.
During assembling, insulating sleeve 2 and middle cylinder 1 are completed to dock, after being packed into conducting rod 3, installation guide rod 6, spring 11
With stop catch plate 10 and spinning screwed retaining ring 12, by compress spring 11 make stop catch plate and connecting flange keep relative close away from
From.Then 12 a distance of screwed retaining ring is unclamped, spring 11 is made to be unfolded to stretch the both ends of conducting rod 3 naturally, conducting rod 3
The prefastening force of the spring 11 at both ends is subject to act on, the rigidity of conducting rod can be improved, compared with prior art, can be cancelled absolutely
Edge supports, and reduces wall bushing design, manufacture and the technical difficulty of assembling, substantially increases the reliability of product.It used
Conducting rod 3 is present with situation about expanding with heat and contract with cold in journey, when expanding with heat and contract with cold stop catch plate 10 is promoted to compress and stretch conductive strips 7, conductive
The variation for the caused length of expanding with heat and contract with cold that can absorb conducting rod 3 with 7.
In the utility model, being conductively connected between conducting rod 3 and baffle is realized by stop catch plate 10 and conductive strips 7
, it is static seal between seal closure 5 and connecting flange 4, compared with the dynamic sealing of conducting rod in the prior art and connecting flange,
It seals relatively reliable.Meanwhile the distance between conducting rod 3 and baffle are adjustable, have adapted to the length change of conducting rod.
In the present embodiment, conductive strips are elastic conductive band, constitute elastic conduction connection structure.
In other embodiments, other elastic component such as elastic rubbers or bellows can be used to replace spring.
In other embodiments, screwed retaining ring can be cancelled, guide rod is extended on seal closure, guide rod is slided with stop catch plate
Connection fills elastic component in guide rod outer cover.
In other embodiments, the connection mode that conducting rod is pierced by between the end of section and stop catch plate can be welding or riveting
The mode connect.
In the present embodiment, the part on seal closure with the cooperation of elastic conduction connection structure is sealing cover body conductive segment,
In the present embodiment, all conductive structures of seal closure in other embodiments, can be led only sealing cover body conductive segment
Electricity, other part are isolation material.
Wall bushing in the above embodiments is for extra-high voltage direct-current transmission field, but is applied equally to other
Field of power transmission.
It the above is only the preferred embodiment of the utility model, it should be pointed out that：For the ordinary skill people of the art
For member, on the premise of the utility model principle is not departed from, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as the scope of protection of the utility model.
Claims (9)
1. a kind of wall bushing component including casing, is sealed on the connecting flange of casing both ends end and is coaxially disposed with casing
Conducting rod, there is the conducting rod conducting rod being pierced by from the perforation of the conducting rod of connecting flange to be pierced by section, the connection method
The blue stretching device for being equipped with to be axially stretched conducting rod backwards to the one side of casing, it is characterised in that：Wall bushing component is also
Including be sealingly fastened on connecting flange conducting rod is pierced by section and stretching device is located at interior end part seal cover, the end
Portion's seal closure has conducting element derived from the electric current on conducting rod, and the conducting rod is pierced by axial elasticity between section and conducting element
It is supported by elastic conduction connection structure.
2. wall bushing component according to claim 1, it is characterised in that：Stretching device includes being pierced by Duan Gu with conducting rod
Surely connected conductive stop catch plate and the more than two elastic supporting member for supporting optical member being supported between conductive stop catch plate and connecting flange, elasticity
Conduction connecting structure is flexibly supported between conductive stop catch plate and conducting element.
3. wall bushing component according to claim 2, it is characterised in that：Elastic supporting member for supporting optical member includes guide rod, is covered on guide rod
Equipped with spring, the spring is supported between connecting flange and conductive stop catch plate.
4. wall bushing component according to claim 3, it is characterised in that：Connecting flange is fixed in one end of the guide rod
On, the other end prevents conductive gear in guide rod by being pierced by conductive stop catch plate by being installed on one end for being pierced by conductive stop catch plate
Only plate is by the screwed retaining ring deviate from guide rod.
5. wall bushing component according to claim 2, it is characterised in that：End part seal cover includes sealing cover body, leads
Flowing part includes the sealing cover body conductive segment being arranged in parallel in sealing cover body with connecting flange, elastic conduction connection structure elasticity
It is supported between conductive stop catch plate and sealing cover body conductive segment.
6. wall bushing component according to claim 5, it is characterised in that：Elastic conduction connection structure includes resilient U-shaped
Conductive strips, the two side arms of resilient U-shaped conductive strips are corresponding respectively to be fixed on sealing cover body conductive segment and conductive stop catch plate, sealing
Cover body conductive segment is equipped with to install the installation operation hole of resilient U-shaped conductive strips.
7. according to the wall bushing component described in claim 2-5 any one, it is characterised in that：Elastic conduction connection structure bag
Resilient U-shaped conductive strips are included, the two side arms of resilient U-shaped conductive strips are corresponding respectively to be fixed on conducting element and conductive stop catch plate.
8. wall bushing component according to claim 6, it is characterised in that：Conducting element is further included outside sealing cover body
The conductive seal flange and the terminal plate on conductive seal flange in the capping installation operation hole in portion.
9. wall bushing component according to claim 2, it is characterised in that：The conducting rod be hollow structure, conducting rod
The end for being pierced by section is equipped with conductive sealing plate, and conductive sealing plate is bonded and is bolted to connection with conductive stop catch plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721225652.0U CN207442385U (en) | 2017-09-22 | 2017-09-22 | Wall bushing component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721225652.0U CN207442385U (en) | 2017-09-22 | 2017-09-22 | Wall bushing component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207442385U true CN207442385U (en) | 2018-06-01 |
Family
ID=62294913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721225652.0U Withdrawn - After Issue CN207442385U (en) | 2017-09-22 | 2017-09-22 | Wall bushing component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207442385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107706854A (en) * | 2017-09-22 | 2018-02-16 | 平高集团有限公司 | A kind of wall bushing component |
-
2017
- 2017-09-22 CN CN201721225652.0U patent/CN207442385U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107706854A (en) * | 2017-09-22 | 2018-02-16 | 平高集团有限公司 | A kind of wall bushing component |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180601 Effective date of abandoning: 20191227 |