CN203941800U - The sleeve pipe of oil-filled transformer and the hermetically-sealed construction of case lid - Google Patents
The sleeve pipe of oil-filled transformer and the hermetically-sealed construction of case lid Download PDFInfo
- Publication number
- CN203941800U CN203941800U CN201420401823.0U CN201420401823U CN203941800U CN 203941800 U CN203941800 U CN 203941800U CN 201420401823 U CN201420401823 U CN 201420401823U CN 203941800 U CN203941800 U CN 203941800U
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- CN
- China
- Prior art keywords
- case lid
- sleeve pipe
- cover cap
- guide vane
- end stop
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of sleeve pipe of oil-filled transformer and the hermetically-sealed construction of case lid, comprise sleeve pipe, case lid and sealing ring, described case lid is provided with first set pore, described sleeve pipe comprises insulator, the corresponding first set pore of described case lid place is provided with guide vane end stop, between described guide vane end stop and first set pore, be formed with location notch, in described location notch, be provided with sealing ring, described guide vane end stop is provided with external screw thread with respect to the opposite side of location notch, described guide vane end stop is provided with cover cap, described cover cap is provided with the second collar aperture, described cover cap is provided with the internal thread suitable with described external screw thread, described cover cap is connected on guide vane end stop by external screw thread and internal thread, between described insulator and cover cap, be provided with elastic clamping block, the utility model structure is provided with blotter coat and two sealing rings in location notch, by cover cap, be wrapped in location notch, reduce sealing place leakage of oil, and can improve sealing ring useful life.
Description
Technical field
The utility model relates to a kind of transformer technology, and more particularly, it relates to a kind of sleeve pipe of oil-filled transformer and the hermetically-sealed construction of case lid.
Background technology
Transformer is to utilize the principle of electromagnetic induction to change the device of alternating voltage, main member is primary coil, secondary coil and iron core (magnetic core), and major function has: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilizing (magnetic saturation transformer) etc.
Transformer can be divided into by purposes: distribution transformer, power transformer, full-sealed transformer, combined transformer, dry-type transformer, oil-filled transformer, single-phase transformer, furnace transformer, rectifier transformer etc.
Oil-filled transformer leakage of oil is the long-standing quality problems of transformer industry, through constantly improving, go good effect, but compare with the like product of external industrially developed country, oil impregnate does not also fundamentally reach solution, particularly middle-size and small-size manufacturer, more general in the problem existing aspect this.Leakage in Transformer oil mostly occurs in weld, sealing surface and encapsulant etc. and locates, there are the following problems in actual use: one, high and low pressure porcelain bushing is a plane at case lid upper part, there is no stopper slot, when placing, seal washer easily puts partially sleeve pipe leakage of oil after causing press-fiting; Two, oil-filled transformer most be arranged on outdoor, high and low pressure sleeve pipe is outside exposed, seal washer is same exposed in air, seal washer irradiates (especially ultraviolet more intense west area) and long-term weathering through ultraviolet ray, can be very fast aging, chap, when serious, can there is high and low pressure sleeve pipe seepage, bring product manpower and materials cost to increase, and affect product quality.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of dependable performance, reduces sealing place leakage of oil, and can improve the sealing ring sleeve pipe of oil-filled transformer and the hermetically-sealed construction of case lid in useful life.
For achieving the above object, the utility model provides following technical scheme: a kind of sleeve pipe of oil-filled transformer and the hermetically-sealed construction of case lid, comprise sleeve pipe, case lid and sealing ring, described case lid is provided with first set pore, described sleeve pipe comprises insulator, the corresponding first set pore of described case lid place is provided with guide vane end stop, between described guide vane end stop and first set pore, be formed with location notch, in described location notch, be provided with sealing ring, described guide vane end stop is provided with external screw thread with respect to the opposite side of location notch, described guide vane end stop is provided with cover cap, described cover cap is provided with the second collar aperture, described cover cap is provided with the internal thread suitable with described external screw thread, described cover cap is connected on guide vane end stop by external screw thread and internal thread, between described insulator and cover cap, be provided with elastic clamping block.
By adopting technique scheme, on case lid, be provided with guide vane end stop, between guide vane end stop and first set pore, form location notch, described sealing ring is positioned at location notch, location notch plays the effect of location to sealing ring, make sealing ring be positioned at all the time location notch, guide vane end stop is provided with external screw thread, cover cap is provided with the internal thread suitable with external screw thread, cover cap was detachably connected on guide vane end stop by external screw thread and externally threaded cooperation, sealing ring is wrapped completely by cover cap and guide vane end stop, can not make sealing ring be exposed in air, be subject to the irradiation of ultraviolet ray or sunlight, can extend the useful life of sealing ring, when needs are changed sealing ring, cover cap is turned on just and can be changed, after replacing completes, cover cap is installed and gone back, elastic clamping block is between insulator and cover cap, elastic clamping block plays the effect of a compression to cover cap, prevent transformer when work produce vibration make between cover cap and guide vane end stop be threaded loosening, case lid is provided with first set pore, cover cap is provided with the second collar aperture, the center of circle of the second collar aperture and first set pore is on same axis, sleeve pipe just can enter in oil tank of transformer through the second collar aperture and first set pore simultaneously.
The utility model is further set to: described sealing ring is provided with blotter coat with respect to the opposite side of case lid.
By adopting technique scheme, sealing ring is positioned at location notch, is provided with blotter coat above sealing ring, and fluid a small amount of in transformer leaks out, and a small amount of fluid that blotter coat just can leak out these sponges, and prevents that fluid seepage from going out.
The utility model is further set to: in described location notch, be provided with two sealing rings, the gross thickness of described two sealing rings and blotter coat is less than the height of location notch.
By adopting technique scheme, the quantity of sealing ring is two, can increase the sealing of sleeve pipe and first set pore junction, and the thickness that blotter coat and two sealing rings are added up can not surpass the height of guide vane end stop, be that blotter coat and two sealing rings while being placed in stopper slot simultaneously, in stopper slot, also leave point space, prevent outwards top of sealing ring expansion.
The utility model is further set to: described insulator is provided with back-up ring with respect to the opposite side of elastic clamping block, and described elastic clamping block is between sleeve pipe and back-up ring.
By adopting technique scheme, on insulator, be provided with back-up ring, elastic clamping block is between sleeve pipe and back-up ring, and back-up ring is trapped among elastic clamping block in back-up ring, avoids elastic clamping block to be subject to for a long time ultraviolet irradiation, reduces useful life.
The utility model is further set to: described sealing ring is Fibre cork rubber sealing ring.
By adopting technique scheme, there are larger height and improvement in the aspects such as Fibre cork rubber is aging in hot strength, elongation at break, compression set, anti-sampling, working temperature than common cork-rubber performance, and the performance of Fibre cork rubber has the duality of cork-rubber and acrylonitrile-butadiene rubber.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the sleeve pipe of the utility model oil-filled transformer and the hermetically-sealed construction of case lid;
Fig. 2 is A place partial enlarged drawing in Fig. 1.
In figure: 1, case lid; 2, sleeve pipe; 21, insulator; 3, sealing ring; 4, guide vane end stop; 41, external screw thread; 5, location notch; 6, cover cap; 61, internal thread; 7, elastic clamping block; 71, back-up ring; 8, blotter coat.
Embodiment
Referring to figs. 1 through Fig. 2, the hermetically-sealed construction embodiment of the sleeve pipe of the utility model oil-filled transformer and case lid is described further.
A kind of sleeve pipe of oil-filled transformer and the hermetically-sealed construction of case lid, comprise case lid 1, case lid 1 is provided with first set pore, cover cap 6 is provided with the second collar aperture, sleeve pipe 2 enters in oil tank of transformer through the second collar aperture and first set pore simultaneously, at case lid, 1 relative first set pore place is provided with guide vane end stop 4, between guide vane end stop 4 and first set pore, be formed with location notch 5, in location notch 5, be provided with successively blotter coat 8 and two sealing rings 3, blotter coat 8 is positioned at the top of sealing ring 3, in the junction of sleeve pipe 2 and first set pore, be provided with two sealing rings 3, can strengthen the sealing of junction, while having a small amount of transformer oil to leak out in fuel tank, blotter coat 8 just can sponge these transformer oil, prevent that transformer oil from leaking into outside case lid 1, guide vane end stop 4 is provided with cover cap 6, on opposite side at guide vane end stop 4 with respect to location notch 5, be provided with external screw thread 41, cover cap 6 is provided with the internal thread 61 with external screw thread 41 adaptations, cover cap 6 is connected on guide vane end stop 4 with the dismounting that coordinates of internal thread 61 by external screw thread 41, sealing ring 3 is included in guide vane end stop 4 and cover cap 6, prevent that sealing ring 3 long term exposure from receiving ultraviolet irradiation in air, cause shorten the useful life of sealing ring 3, when sealing ring 3 or blotter coat 8 need to be changed, cover cap 6 is turned on and changed, after replacing completes, cover cap 6 is reinstalled back, the thickness of the thickness of blotter coat 8 and two sealing rings 3 is added up and is no more than the height of guide vane end stop 4, between location notch 5 and cover cap 6, there is certain gap, prevent that sealing ring 3 from not having the space of expanded by heating, and cause sealing ring 3 to be out of shape.
Sealing ring 3 is Fibre cork rubber sealing ring 3, there are larger height and improvement in the aspects such as Fibre cork rubber is aging in hot strength, elongation at break, compression set, anti-sampling, working temperature than common cork-rubber performance, and the performance of Fibre cork rubber has the duality of cork-rubber and acrylonitrile-butadiene rubber.
Elastic clamping block 7 is between insulator 21 and cover cap 6; 7 pairs of cover caps 6 of elastic clamping block play the effect of compression; when transformer is worked; can produce vibration; through vibration external screw thread 41 can be loosening with internal thread 61 for a long time; elastic clamping block 7 is pressed on cover cap 6 on case lid 1; prevent that cover cap 6 is loosening; on opposite side at elastic clamping block 7 with respect to sleeve pipe 2, be provided with back-up ring 71; the effect of back-up ring 71 is to prevent that elastic clamping block 7 is subject to ultraviolet irradiation for a long time and reduces useful life, plays a protective role to elastic clamping block 7.
The above is only preferred implementation of the present utility model, and protection range of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (5)
1. the sleeve pipe of an oil-filled transformer and the hermetically-sealed construction of case lid, comprise sleeve pipe, case lid and sealing ring, described case lid is provided with first set pore, described sleeve pipe comprises insulator, it is characterized in that: the corresponding first set pore of described case lid place is provided with guide vane end stop, between described guide vane end stop and first set pore, be formed with location notch, in described location notch, be provided with sealing ring, described guide vane end stop is provided with external screw thread with respect to the opposite side of location notch, described guide vane end stop is provided with cover cap, described cover cap is provided with the second collar aperture, described cover cap is provided with the internal thread suitable with described external screw thread, described cover cap is connected on guide vane end stop by external screw thread and internal thread, between described insulator and cover cap, be provided with elastic clamping block.
2. the sleeve pipe of oil-filled transformer according to claim 1 and the hermetically-sealed construction of case lid, is characterized in that: described sealing ring is provided with blotter coat with respect to the opposite side of case lid.
3. the sleeve pipe of oil-filled transformer according to claim 2 and the hermetically-sealed construction of case lid, is characterized in that: in described location notch, be provided with two sealing rings, the gross thickness of described two sealing rings and blotter coat is less than the height of location notch.
4. the sleeve pipe of oil-filled transformer according to claim 1 and the hermetically-sealed construction of case lid, is characterized in that: described insulator is provided with back-up ring with respect to the opposite side of elastic clamping block, and described elastic clamping block is between sleeve pipe and back-up ring.
5. according to the sleeve pipe of oil-filled transformer and the hermetically-sealed construction of case lid described in claim 1 or 2 or 3, it is characterized in that: described sealing ring is Fibre cork rubber sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420401823.0U CN203941800U (en) | 2014-07-21 | 2014-07-21 | The sleeve pipe of oil-filled transformer and the hermetically-sealed construction of case lid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420401823.0U CN203941800U (en) | 2014-07-21 | 2014-07-21 | The sleeve pipe of oil-filled transformer and the hermetically-sealed construction of case lid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203941800U true CN203941800U (en) | 2014-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420401823.0U Expired - Fee Related CN203941800U (en) | 2014-07-21 | 2014-07-21 | The sleeve pipe of oil-filled transformer and the hermetically-sealed construction of case lid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203941800U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107833728A (en) * | 2017-10-31 | 2018-03-23 | 国网山东省电力公司电力科学研究院 | Sealing structure and encapsulating method of the transformer oil filled bushing insulator with metab |
| CN112071596A (en) * | 2020-08-04 | 2020-12-11 | 国家电网有限公司 | Power transformer with running state alarm |
-
2014
- 2014-07-21 CN CN201420401823.0U patent/CN203941800U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107833728A (en) * | 2017-10-31 | 2018-03-23 | 国网山东省电力公司电力科学研究院 | Sealing structure and encapsulating method of the transformer oil filled bushing insulator with metab |
| CN112071596A (en) * | 2020-08-04 | 2020-12-11 | 国家电网有限公司 | Power transformer with running state alarm |
| CN112071596B (en) * | 2020-08-04 | 2024-04-19 | 国家电网有限公司 | Power transformer with running state alarm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20180721 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |