CN203892559U - Double-sealing device for 500-kilovolt capacitor voltage transformer expander - Google Patents
Double-sealing device for 500-kilovolt capacitor voltage transformer expander Download PDFInfo
- Publication number
- CN203892559U CN203892559U CN201420350506.0U CN201420350506U CN203892559U CN 203892559 U CN203892559 U CN 203892559U CN 201420350506 U CN201420350506 U CN 201420350506U CN 203892559 U CN203892559 U CN 203892559U
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- Prior art keywords
- sealing
- ring seals
- expander
- double
- seal
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- Expired - Fee Related
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Abstract
The utility model relates to a double-sealing device for a 500-kilovolt capacitor voltage transformer expander. According to the double-sealing device, the edge of an oil plug port in the upper end of an expander body is provided with a sealing groove I, a small O-shaped sealing ring is placed in the sealing groove I, and an oil plug presses the small O-shaped sealing ring tightly to form a first seal. The expander body is further provided with a sealing groove II, a large O-shaped sealing ring is placed in the sealing groove II, a protection cover presses the large O-shaped sealing ring tightly to form a second seal, a closed space is formed, and the first seal is isolated from the outside environment. The limiting structure design is adopted in the sealing grooves, and the compression amount of the O-shaped sealing rings can be controlled. The double-sealing device is easy to assemble and good in sealing performance.
Description
(1) technical field
The utility model relates to a kind of 500kV capacitance type potential transformer expander double-seal device.For capacitance type potential transformer, the sealing after expander oiling, belongs to high-tension line apparatus field.
(2) background technique
At present the expander of capacitance type potential transformer is divided into two kinds of the built-in and interior oily externals of outer oil, considers the observability of 500kV capacitance type potential transformer expander leakage of oil, adopts interior oily external expander.The general seal structures that adopts of external expander, at O-ring seals of plug cock outer ring sleeve, screws in pouring orifice, press seal.Sealing circle communicates with ambient air, is subject to the impact of corrosive material in external environment, and seal ring aging speed is fast, and sealing life is short, causes 500kV capacitance type potential transformer operational reliability low.
(3) summary of the invention
For effectively reducing the impact of corrosive goods confrontation sealing effect in external environment, improve the operational reliability of 500kV capacitance type potential transformer, the utility model provides a kind of 500kV capacitance type potential transformer expander double-seal device.
The technical solution of the utility model is as follows:
A 500kV capacitance type potential transformer expander double-seal device, sealing device comprises expander main body, little O-ring seals, plug cock, large O-ring seals and protective cover; Plug cock mouth edge, expander main body upper end is provided with seal groove I, puts into little O-ring seals in seal groove I, and plug cock and plug cock mouth are suitable, plug cock is installed and is screwed, and plug cock compresses little O-ring seals and forms first sealing; On the upper shoulder platform of expander main body, be also provided with seal groove II; in seal groove II, put into large O-ring seals, tighten protective cover, protective cover compresses large O-ring seals and forms second sealing; between protective cover and plug cock, form confined space, make first sealing and external environment isolation.
Preferred according to the utility model, the groove depth of described seal groove I is 3.7～3.8mm, and the groove depth of seal groove II is 4.4～4.5mm.
Preferred according to the utility model, described little O-ring seals is of a size of: external diameter 31～32mm, section footpath 4.9～5.1mm, large O-ring seals is of a size of: external diameter 53～54mm, section footpath 5.9～6.1mm.
Described little O-ring seals, large O-ring seals are fluorosioloxane rubber material.The little O-ring seals decrement of the spacing control of seal groove I, after plug cock is tightened, little O-ring seals decrement is 24%～26%.The large O-ring seals decrement of the spacing control of seal groove II, after protective cover is tightened, large O-ring seals decrement is 25%～26.7%.
The utility model is for capacitance type potential transformer, the sealing after expander oiling.
The beneficial effects of the utility model:
1, the utility model double sealing structure, good sealing effect.
2, the utility model inner sealing forms confined space, with isolate from outer air, reduces seal ring aging speed.
3, the spacing design groove depth of the utility model double density sealing groove, accurately controls seal ring decrement, can effectively stop expander leakage of oil, has improved the operational reliability of 500kV capacitance type potential transformer.
4, the utility model is simple, reliable, easy to assembly.
(4) accompanying drawing explanation
Fig. 1 is the sectional view of 500kV capacitance type potential transformer expander double-seal device;
Fig. 2 is the seal groove key plan of 500kV capacitance type potential transformer expander double-seal device;
In figure, 1. protective cover, 2. plug cock, 3. little O-ring seals, 4. large O-ring seals, 5. expander main body, 6. seal groove I, 7. seal groove II, 8. capacitor oil.
(5) embodiment
Below in conjunction with accompanying drawing, structure of the present utility model and assembling are further illustrated.
A 500kV capacitance type potential transformer expander double-seal device, structure is as shown in Figure 1 and Figure 2; Sealing device comprises expander main body (5), little O-ring seals (3), plug cock (2), large O-ring seals (4) and protective cover (1); Plug cock mouth edge, expander main body (5) upper end is provided with seal groove I (6), groove depth
in seal groove I (6), put into little O-ring seals (3), plug cock (2) is packed in plug cock mouth and screwed, plug cock (2) compresses little O-ring seals (3) and forms first sealing; The upper shoulder platform of expander main body (5) is provided with seal groove II (7), groove depth
in seal groove II (7), put into large O-ring seals (4); cover protective cover (1) and screw; protective cover (1) compresses large O-ring seals (4) and forms second sealing; between protective cover (1) and plug cock (2), form confined space, make first sealing and external environment isolation.
The effect of each component is as follows:
1, plug cock (2) compresses little O-ring seals (3), stops capacitor oil (8) to external leakage, and first sealing is provided.
2, protective cover (1) compresses large O-ring seals (4), and inner confined space and second sealing are provided.
3, expander main body (5), inside holds capacitor oil (8), does temperature correction use, and there are seal groove I (6), groove depth in expander main body (5) upper end
be used for placing little O-ring seals (3); Seal groove II (7), groove depth
be used for placing large O-ring seals (4).
4, little O-ring seals (3) is fluorosioloxane rubber material, size 32 * 5 (external diameter * section footpath) mm, and after plug cock (2) is tightened, little O-ring seals (3) decrement is 24%～26%.
5, large O-ring seals (4) is fluorosioloxane rubber material, size 54 * 6 (external diameter * section footpath) mm, and after protective cover (1) is tightened, large O-ring seals (4) decrement is 25%～26.7%.
This model utility is simple in structure, and reliable performance is easy to operate, can effectively stop the leakage of oil of 500kV capacitance type potential transformer expander, has improved product safety reliability of operation.
Claims (3)
1. a 500kV capacitance type potential transformer expander double-seal device, sealing device comprises expander main body, little O-ring seals, plug cock, large O-ring seals and protective cover; It is characterized in that plug cock mouth edge, expander main body upper end is provided with seal groove I, put into little O-ring seals in seal groove I, plug cock and plug cock mouth are suitable, plug cock is installed and is screwed, and plug cock compresses little O-ring seals and forms first sealing; On the upper shoulder platform of expander main body, be also provided with seal groove II; in seal groove II, put into large O-ring seals, tighten protective cover, protective cover compresses large O-ring seals and forms second sealing; between protective cover and plug cock, form confined space, make first sealing and external environment isolation.
2. capacitance type potential transformer expander double-seal device according to claim 1, the groove depth that it is characterized in that described seal groove I is 3.7～3.8mm, the groove depth of seal groove II is 4.4～4.5mm.
3. capacitance type potential transformer expander double-seal device according to claim 1, it is characterized in that described little O-ring seals is of a size of: external diameter 31～32mm, section footpath 4.9～5.1mm, large O-ring seals is of a size of: external diameter 53～54mm, section footpath 5.9～6.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420350506.0U CN203892559U (en) | 2014-06-26 | 2014-06-26 | Double-sealing device for 500-kilovolt capacitor voltage transformer expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420350506.0U CN203892559U (en) | 2014-06-26 | 2014-06-26 | Double-sealing device for 500-kilovolt capacitor voltage transformer expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203892559U true CN203892559U (en) | 2014-10-22 |
Family
ID=51718967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420350506.0U Expired - Fee Related CN203892559U (en) | 2014-06-26 | 2014-06-26 | Double-sealing device for 500-kilovolt capacitor voltage transformer expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203892559U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145685A (en) * | 2019-06-26 | 2020-12-29 | 纬湃汽车电子(长春)有限公司 | Sealing structure for fluid and sealing assembly |
-
2014
- 2014-06-26 CN CN201420350506.0U patent/CN203892559U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145685A (en) * | 2019-06-26 | 2020-12-29 | 纬湃汽车电子(长春)有限公司 | Sealing structure for fluid and sealing assembly |
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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: 20141022 Termination date: 20150626 |
|
| EXPY | Termination of patent right or utility model |