CN201374231Y - Oil-impregnated paper capacitive transformer bushing head structure - Google Patents
Oil-impregnated paper capacitive transformer bushing head structure Download PDFInfo
- Publication number
- CN201374231Y CN201374231Y CN200920041992U CN200920041992U CN201374231Y CN 201374231 Y CN201374231 Y CN 201374231Y CN 200920041992 U CN200920041992 U CN 200920041992U CN 200920041992 U CN200920041992 U CN 200920041992U CN 201374231 Y CN201374231 Y CN 201374231Y
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- Prior art keywords
- ring
- cover plate
- head
- conservator cover
- prominent ring
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- Expired - Fee Related
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Abstract
The utility model provides an oil-impregnated paper capacitive transformer bushing head structure which has reliable sealing and convenient installation. The oil-impregnated paper capacitive transformer bushing head structure is provided with a projecting ring above on the periphery of a through hole of an oil conservator cover board; an upper end of a lead joint passing through the projecting ring is connected on the upward side in the interior of a conductive joint, and a lower end of the lead joint is connected with an outgoing cable; both ends of a positioning dowel passing through the lead joint are located in a location hole opened on the ring wall of the projecting ring; an upper end of a conductive tube is in sealing connection with the through hole of the oil conservator cover board; a lower end surface of the conductive joint is fixed on an upper end surface of the oil conservator cover board, and the lower part inside the conductive joint is in sealing connection with the periphery of the projecting ring.
Description
Technical field
The utility model relates to a kind of oil-impregnated paper condenser type transformer bushing, specifically, is a kind of head construction of oil-impregnated paper condenser type transformer bushing, and it has reliable sealing, and the fail safe that moves for transformer provides powerful guarantee.
Background technology
She Ji oilpaper capacitance graded bushing head construction complexity in the past, assembly manipulation inconvenience, Seal Design is also unreasonable, gives on-the-spot install and regular maintenance has all proposed higher requirement like this, has also stayed certain hidden danger to later stage transformer safe operation.Fig. 2 is typical a kind of existing head construction, and there are the following problems for this structure:
1, as shown in Figure 2,3 road seal washers 4,5,6 are arranged, sealing means is " sealing in parallel ", if wherein one seal washer is destroyed, then must cause the head seepage.
2, because all there are certain manufacturing tolerance in sleeve pipe main parts size insulator, flange, ground connection tube and other metal-ware, then by certainly existing bigger cumulative limit after all multiple component assemblings, therefore, the total length of contact tube all leaves very big nargin before assembling, according to actual conditions it is cut again after the sleeve pipe general assembly, also will polish to wedge angle and burr after the cutting, it is very inconvenient to operate.
3, junction block is spun on the contact tube among the figure, and contact tube 1 upper end is by being threaded on the junction block 2, and junction block and contact tube contact portion are wrapped with teflin tape (being commonly called as " raw material band ").Since on the contact tube screw thread is arranged, at the fragile delta seal packing ring 6 of overexertion, in addition, very unreliable as the encapsulant of key position like this with raw material band yet.
Because there is above-mentioned serial problem in old-fashioned head construction, cause the on-the-spot seepage oil ratio example in installation back high, the transformer operation risk is very big.For addressing the above problem, the applicant develops another kind of head construction, as shown in Figure 3, adopts sealing ring 3,4 to carry out double sealing between conductive head 1 and the conservator cover plate 2, and sealing means is " series connection ", even the one impaired yet assurance of sealing ring sealing is not damaged.Even enough can guaranteeing to exist under unsuitable stressed, the slight operate miss state, sealing can not cause dangerous water inlet fault yet.But this structure is still inconvenience to some extent in operation, figure mesopore 5 is a dowel hole, hole 6 is a fixing hole, and after cable 9 was drawn from contact tube 8 centers, 6 places inserted one " cross " bottle opener (or other long cylinder pin) anchor leg joint 7 earlier in the hole, then conductive head 1 is spun on pigtail splice upper end (passing through thread connection), because it is there are certain distance (A indication window distance is generally 30mm among the figure) in hole 5 and 6 in hole, comparatively difficult when cable is depressed, particularly the cross-section of cable is long-pending bigger, as 300mm
2Above copper cable is difficult to operation, and draw with strength by 6 set bolts 8 on the conductive head at the scene sometimes, so often causes the screwed hole thread damage.
The utility model content
The purpose of this utility model provides a kind of oil-impregnated paper condenser type transformer bushing head construction reliable, easy for installation that seals.
This oil-impregnated paper condenser type transformer bushing head construction, periphery has prominent ring above the through hole of conservator cover plate; The upper end of passing the pigtail splice of prominent ring is connected the inner and upper of conductive head, and the lower end connects outgoing cable; One two ends of passing the shop bolt of pigtail splice are located in the location hole of being opened on the ring wall of prominent ring; The through hole of the upper end of contact tube and conservator cover plate is tightly connected; The conductive head lower surface is fixed on the conservator cover plate upper surface, and the bottom is tightly connected with prominent ring periphery in conductive head.
In the utility model, the sealing that has two places to be in series, promptly the through hole of the upper end of contact tube and conservator cover plate is tightly connected, and the bottom is tightly connected with prominent ring periphery in conductive head, and therefore sealing is reliable.Its fitting operation is very simple, at first the Transformer Winding outgoing cable is connected (generally being welding) with the lower end of pigtail splice good, pigtail splice is pulled out from the contact tube center, then shop bolt is passed pigtail splice, and make the two ends of shop bolt be inserted in the location hole of being opened on the ring wall of prominent ring; Again conductive head is connected (generally being threaded) on pigtail splice, and the bottom is tightly connected with prominent ring periphery in the conductive head; Afterwards, conductive head being fixed (generally passing through bolt) gets final product on the conservator cover plate.
In order to reduce the cost of conservator cover plate, prominent ring comprises becoming the lower part by the prominent ring of two parts up and down that is threaded, with the conservator cover plate be one, the top at prominent ring left by location hole; Two parts sealing is reliable down for this simultaneously, scribbles epoxy resin on described screw thread, and the ring top and the bottom of will dashing forward behind the hot setting connect as one.At this moment, the bottom is preferably with the structure that prominent ring periphery is tightly connected in conductive head: periphery and conservator cover plate junction in prominent ring lower part are provided with sealing ring, and the bottom is pressed on sealing ring in the conductive head.
As improvement, by being set, sealing ring is tightly connected between the through hole of the upper end of contact tube and conservator cover plate.
As improvement, shop bolt passes pigtail splice along the diametric(al) of pigtail splice.
As improvement, between conductive head lower surface and the conservator cover plate upper surface sealing gasket is set.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is existing casing head bilge construction schematic diagram.
Fig. 3 is another kind of existing casing head bilge construction schematic diagram.
Fig. 4 is the conservator cover plate and prominent ring connection diagram among Fig. 1.
Embodiment
Referring to Fig. 1,4, prominent ring comprises top and the bottom 12,15, and lower part 15 is one with conservator cover plate 14, and the top 12 at prominent ring left by location hole.Prominent ring top and the bottom 12,15 scribble epoxy resin 13 by being threaded on described screw thread, inciting somebody to action up and down behind the hot setting, two parts couple together.
The upper end of passing the prominent pigtail splice 3 that encircles is by being threaded in the inner and upper of conductive head 2, lower end and outgoing cable 10 welding.The two ends of passing the shop bolt 6 of pigtail splice along diametric(al) are located in the location hole of being opened on the ring wall on prominent ring top 12.Be tightly connected by sealing ring 8 between the through hole of the upper end of contact tube 9 and conservator cover plate.Conductive head 2 lower surfaces are provided with sealing gasket by being bolted on conservator cover plate 14 upper surfaces between conductive head lower surface and the conservator cover plate upper surface.The bottom compresses sealing ring in the conductive head.The periphery of prominent ring lower part and the groove that conservator cover plate junction is provided with 0.5 ~ 1mm are as putting O grommet type seal circle 7 positions, O grommet type seal circle is than the little 2mm of groove diameter, make O grommet type seal circle that groove surfaces is packed tightly, the bottom compresses O grommet type seal circle in the conductive head, seals very reliable and be difficult to destroy.
Has fabrication hole 16 on the upper surface of pigtail splice 3.Fitting operation is very simple, at first the lower end of Transformer Winding outgoing cable and pigtail splice 3 is welded, in fabrication hole 16, screw in a hex bolts, tie down hex bolts with strap or fine wire pigtail splice 3 is drawn out to position of positioning hole from the contact tube center, in pigtail splice, insert shop bolt and make the shop bolt two ends extend in the prominent location hole that encircles on the top 12.The conductive head internal upper part is screwed in the upper end of pigtail splice 3, and the bottom compresses O grommet type seal circle in the conductive head, again and tight spring washer 5 and set bolt 4, conductive head 2 lower surfaces by being fixed on conservator cover plate 14 upper surfaces.
This casing head bilge construction sealing is reliable, and the fail safe that moves for transformer provides powerful guarantee.
Claims (7)
1. oil-impregnated paper condenser type transformer bushing head construction is characterized in that: periphery has prominent ring above the through hole of conservator cover plate; The upper end of passing the pigtail splice of prominent ring is connected the inner and upper of conductive head, and the lower end connects outgoing cable; One two ends of passing the shop bolt of pigtail splice are located in the location hole of being opened on the ring wall of prominent ring; The through hole of the upper end of contact tube and conservator cover plate is tightly connected; The conductive head lower surface is fixed on the conservator cover plate upper surface, and the bottom is tightly connected with prominent ring periphery in conductive head.
2. head construction according to claim 1 is characterized in that: prominent ring comprises becoming by the two parts up and down that are threaded, and the lower part and the conservator cover plate of prominent ring are one, and the top at prominent ring left by location hole; Scribble epoxy resin on described screw thread, the ring top and the bottom of will dashing forward behind the hot setting couple together.
3. head construction according to claim 2 is characterized in that: the bottom with the structure that prominent ring periphery is tightly connected is in conductive head: periphery and conservator cover plate junction in prominent ring lower part are provided with sealing ring, and the bottom compresses sealing ring in the conductive head.
4. according to claim 1,2 or 3 described head constructions, it is characterized in that: be tightly connected by sealing ring is set between the through hole of the upper end of contact tube and conservator cover plate.
5. according to claim 1,2 or 3 described head constructions, it is characterized in that: shop bolt passes pigtail splice along the diametric(al) of pigtail splice.
6. according to claim 1,2 or 3 described head constructions, it is characterized in that: between conductive head lower surface and the conservator cover plate upper surface sealing gasket is set.
7. according to claim 1,2 or 3 described head constructions, it is characterized in that: the upper end of pigtail splice is by being threaded in the inner and upper of conductive head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920041992U CN201374231Y (en) | 2009-03-23 | 2009-03-23 | Oil-impregnated paper capacitive transformer bushing head structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920041992U CN201374231Y (en) | 2009-03-23 | 2009-03-23 | Oil-impregnated paper capacitive transformer bushing head structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201374231Y true CN201374231Y (en) | 2009-12-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920041992U Expired - Fee Related CN201374231Y (en) | 2009-03-23 | 2009-03-23 | Oil-impregnated paper capacitive transformer bushing head structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201374231Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102789881A (en) * | 2012-08-21 | 2012-11-21 | 山东电力设备有限公司 | Extra-high voltage transformer high-voltage middle outgoing line positioning device and positioning method for extra-high voltage transformer high-voltage middle outgoing line |
| CN102800468A (en) * | 2012-08-09 | 2012-11-28 | 中国西电电气股份有限公司 | Impregnated paper capacitive oil-SF6 transformer bushing |
| CN109841382A (en) * | 2019-02-28 | 2019-06-04 | 江苏神马电力股份有限公司 | A kind of bushing shell for transformer head assembly and bushing shell for transformer |
| CN111801753A (en) * | 2018-01-23 | 2020-10-20 | Abb电网瑞士股份公司 | Sealing device for a bushing and bushing having such a sealing 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 |
-
2009
- 2009-03-23 CN CN200920041992U patent/CN201374231Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800468A (en) * | 2012-08-09 | 2012-11-28 | 中国西电电气股份有限公司 | Impregnated paper capacitive oil-SF6 transformer bushing |
| CN102800468B (en) * | 2012-08-09 | 2015-06-03 | 中国西电电气股份有限公司 | Impregnated paper capacitive oil-SF6 transformer bushing |
| CN102789881A (en) * | 2012-08-21 | 2012-11-21 | 山东电力设备有限公司 | Extra-high voltage transformer high-voltage middle outgoing line positioning device and positioning method for extra-high voltage transformer high-voltage middle outgoing line |
| CN102789881B (en) * | 2012-08-21 | 2015-02-04 | 山东电力设备有限公司 | Extra-high voltage transformer high-voltage middle outgoing line positioning device and positioning method for extra-high voltage transformer high-voltage middle outgoing line |
| CN111801753A (en) * | 2018-01-23 | 2020-10-20 | Abb电网瑞士股份公司 | Sealing device for a bushing and bushing having such a sealing device |
| US11769611B2 (en) | 2018-01-23 | 2023-09-26 | Hitachi Energy Switzerland Ag | Sealing arrangement for a bushing and a bushing with such a sealing arrangement |
| CN109841382A (en) * | 2019-02-28 | 2019-06-04 | 江苏神马电力股份有限公司 | A kind of bushing shell for transformer head assembly and bushing shell for transformer |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Zhida High-Voltage Electric Co., Ltd. Assignor: Nanjing Zhida Electric Co., Ltd. Contract record no.: 2011320000410 Denomination of utility model: Oil-impregnated paper capacitive transformer bushing head structure Granted publication date: 20091230 License type: Exclusive License Record date: 20110325 |
|
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Jiangsu Zhida High-Voltage Electric Co., Ltd. Assignor: Nanjing Zhida Electric Co., Ltd. Contract record no.: 2011320000410 Date of cancellation: 20111220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20160323 |