CN111462999A - Fully-sealed oilpaper capacitive transformer bushing - Google Patents
Fully-sealed oilpaper capacitive transformer bushing Download PDFInfo
- Publication number
- CN111462999A CN111462999A CN202010214520.8A CN202010214520A CN111462999A CN 111462999 A CN111462999 A CN 111462999A CN 202010214520 A CN202010214520 A CN 202010214520A CN 111462999 A CN111462999 A CN 111462999A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- cover plate
- insulating
- mounting flange
- oil
- 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.)
- Pending
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
- H01B17/58—Tubes, sleeves, beads, or bobbins through which the conductor passes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
- H01B17/60—Composite insulating bodies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
Abstract
The invention discloses a fully-sealed oilpaper capacitive transformer bushing, wherein two mounting flanges are glued at the upper end and the lower end of an upper insulating outer wall, a cover plate is fixedly connected to the mounting flange at the upper side, an air bag is arranged in an upper insulating inner cavity, an inflation valve on the air bag penetrates through the cover plate and extends out of the outer side of the cover plate, an oil filling valve is connected to the cover plate, an oil filling opening in the oil filling valve is communicated with the upper insulating inner cavity, and a pressure gauge is arranged on the mounting flange at the lower side. According to the invention, the air bag is arranged in the sleeve, the insulating oil in the sleeve keeps micro-positive pressure under the action of the air bag, when the insulating oil expands with heat and contracts with cold, the pressure is adjusted by the air bag, and the micro-positive pressure in the sleeve can effectively prevent the sleeve from water inflow, so that safety accidents caused by water inflow of the sleeve are avoided. The pressure gauge is arranged on the mounting flange, so that whether the whole sleeve is well sealed can be monitored, the internal pressure of the sleeve can be monitored, and explosion accidents caused by overlarge internal pressure of the sleeve can be prevented.
Description
The technical field is as follows:
the invention relates to a fully-sealed oilpaper capacitive transformer bushing.
Background art:
the running conditions of the transformer bushing are extremely harsh, the transformer bushing is comprehensively influenced by various aspects such as voltage, current, tension, vibration, wind power, atmospheric pollution and the like during running, and once a fault is generated, the accident is easily expanded and the loss is serious. Thus, the ferrule is also the most interesting fitting of the host fittings.
The transformer bushing is exploded, which may cause great economic loss and threatens life safety of personnel, and water inflow inside the bushing is still the main reason for initial failure, and most of the failures are sudden failures, so that the harmfulness is great. The main reason is that under non-sealing conditions (the reason for breaking the seal may be due to structural design defects or mishandling by installers during installation of the casing), the interior of the casing is infiltrated with moisture.
The problems that the oil level of the sleeve is fuzzy and the oil meter display fails after the operation time is long are solved, so that the oil level in the sleeve cannot be accurately judged on site, and the fault of the sleeve cannot be found in time.
The invention content is as follows:
the invention provides a fully-sealed oilpaper capacitive transformer bushing to solve the problems in the prior art.
The technical scheme adopted by the invention is as follows:
the utility model provides a totally enclosed oiled paper condenser transformer bushing, includes insulation, mounting flange, lower insulation and electric capacity core, go up insulation and insulating coaxial setting and both fixed connection down, electric capacity core wears to locate in insulation and lower insulation, has two mounting flanges at the upper and lower both ends mucilage binding of last insulating outer wall, still includes the apron, fills oily valve, manometer and is equipped with the gasbag of valve, apron fixed connection is on the mounting flange of upside, and the gasbag setting is in last insulating inner chamber and with electric capacity core coaxial arrangement, and the valve of filling on the gasbag passes the apron and stretches out the outside of apron, and the valve of filling oil is connected on the apron, and fills the hydraulic fluid port of filling in the oily valve and is linked together with last insulating inner chamber, the manometer sets up on downside mounting flange, and the manometer is used for measuring insulating and lower insulating inner chamber pressure.
Further, the air bag is made of elastic materials.
Furthermore, a cavity for accommodating the inflation valve and the oil filling valve is arranged on the cover plate.
Furthermore, sealing rings are arranged between the inflation valve and the cover plate and between the oil inflation valve and the cover plate.
Further, a sealing ring is arranged between the cover plate and the mounting flange on the upper side.
The invention has the following beneficial effects:
1) according to the invention, the air bag is arranged in the sleeve, the insulating oil in the sleeve keeps micro-positive pressure under the action of the air bag, when the insulating oil expands with heat and contracts with cold, the pressure is adjusted by the air bag, and the micro-positive pressure in the sleeve can effectively prevent the sleeve from water inflow, so that safety accidents caused by water inflow of the sleeve are avoided.
2) The pressure gauge is arranged on the mounting flange, so that whether the whole sleeve is well sealed can be monitored, the internal pressure of the sleeve can be monitored, and explosion accidents caused by overlarge internal pressure of the sleeve can be prevented.
Description of the drawings:
FIG. 1 is a block diagram of the present invention.
Fig. 2 and 3 are partial enlarged views of the present invention.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 3, the fully-sealed oilpaper capacitive transformer bushing of the invention comprises a cover plate 2, an upper insulator 3, a mounting flange 4, a lower insulator 6, a capacitor core 8, an oil filling valve 11, a pressure gauge 12 and an air bag 9 provided with an inflation valve 10.
Go up insulating 3 and lower insulating 6 coaxial setting and both fixed connection, the inner chamber of going up insulating 3 and the inner chamber of lower insulating 6 link up mutually. The capacitor core 8 is arranged in the upper insulation 3 and the lower insulation 6 in a penetrating way, and two mounting flanges 4 are glued at the upper end and the lower end of the outer wall of the upper insulation 3. The cover plate 2 is fixedly connected to the mounting flange 4 on the upper side, the air bag 9 is arranged in the inner cavity of the upper insulation 3 and is coaxially arranged with the capacitor core 8, and the inflation valve 10 on the air bag 9 penetrates through the cover plate 2 and extends out of the outer side of the cover plate 2. The oil filling valve 11 is connected to the cover plate 2, and an oil filling port in the oil filling valve 11 is communicated with the inner cavity of the upper insulation 3.
The air bag 9 of the present invention is made of an elastic material such as rubber.
In order to facilitate the installation of the inflation valve 10 and the oil filling valve 11 on the cover plate 2, a chamber for accommodating the inflation valve 10 and the oil filling valve 11 is arranged on the cover plate 2.
In order to ensure the installation tightness, sealing rings are arranged between the charging valve 10 and the cover plate 2 and between the oil charging valve 11 and the cover plate 2. A sealing ring is arranged between the cover plate 2 and the mounting flange 4 on the upper side.
When the oil is supplied to the bushing, the oil is supplied to the inside of the bushing through the oil-filling valve 11. An inflation valve 10 is arranged on the air bag 9 and extends out of the cover plate to keep sealing, and when the air bag is in short of air, air can be supplied from the inflation valve; except the air bag, the inner cavity of the whole sleeve is filled with insulating oil, the insulating oil keeps micro-positive pressure under the action of the air bag, and when the insulating oil expands with heat and contracts with cold, the pressure is adjusted by the air bag.
According to the invention, the pressure gauge is arranged on the mounting flange, so that the pressure inside the sleeve can be monitored. Because the inside pressure-fired of sleeve pipe, can effectively prevent the sleeve pipe and intake to avoid the sleeve pipe because of the incident that the intaking caused. The pressure gauge is arranged on the mounting flange, so that whether the whole sleeve is well sealed can be monitored, the internal pressure of the sleeve can be monitored, and explosion accidents caused by overlarge internal pressure of the sleeve can be prevented. If a pressure sensor is arranged, intelligent control can be realized, pressure rise can be caused by internal insulation faults of the sleeve, and the system can give an alarm and even automatically cut off the power supply.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.
Claims (5)
1. The utility model provides a totally enclosed oiled paper condenser transformer bushing, includes insulating (3), mounting flange (4), lower insulating (6) and electric capacity core (8), go up insulating (3) and lower insulating (6) coaxial setting and both fixed connection, electric capacity core (8) are worn to locate in insulating (3) and lower insulating (6), and the upper and lower both ends glue of last insulating (3) outer wall is equipped with two mounting flange (4), its characterized in that: still include apron (2), oil charge valve (11), manometer (12) and be equipped with gasbag (9) of inflation valve (10), apron (2) fixed connection is on mounting flange (4) of upside, and gasbag (9) set up in the inner chamber of last insulation (3) and arrange with electric capacity core (8) are coaxial, and gas charge valve (10) on gasbag (9) pass apron (2) and stretch out the outside of apron (2), and oil charge valve (11) are connected on apron (2), and the oil filling mouth in oil charge valve (11) is linked together with the inner chamber of last insulation (3), manometer (12) set up under side mounting flange (4), and manometer (12) are used for measuring the inner chamber pressure of last insulation (3) and lower insulation (6).
2. The fully-sealed intelligent oilpaper capacitive transformer bushing of claim 1, wherein: the air bag (9) is made of elastic materials.
3. The fully-sealed intelligent oilpaper capacitive transformer bushing of claim 1, wherein: and a cavity for accommodating the inflation valve (10) and the oil filling valve (11) is arranged on the cover plate (2).
4. The fully-sealed intelligent oilpaper capacitive transformer bushing of claim 3, wherein: and sealing rings are arranged between the inflation valve (10) and the cover plate (2) and between the oil inflation valve (11) and the cover plate (2).
5. The fully-sealed intelligent oilpaper capacitive transformer bushing of claim 1, wherein: and a sealing ring is arranged between the cover plate (2) and the mounting flange (4) on the upper side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010214520.8A CN111462999A (en) | 2020-03-24 | 2020-03-24 | Fully-sealed oilpaper capacitive transformer bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010214520.8A CN111462999A (en) | 2020-03-24 | 2020-03-24 | Fully-sealed oilpaper capacitive transformer bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111462999A true CN111462999A (en) | 2020-07-28 |
Family
ID=71682302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010214520.8A Pending CN111462999A (en) | 2020-03-24 | 2020-03-24 | Fully-sealed oilpaper capacitive transformer bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111462999A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242419A (en) * | 2021-12-15 | 2022-03-25 | 王来军 | Oil-immersed transformer insulation sleeve |
-
2020
- 2020-03-24 CN CN202010214520.8A patent/CN111462999A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242419A (en) * | 2021-12-15 | 2022-03-25 | 王来军 | Oil-immersed transformer insulation sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200728 |