LU100566B1 - Miniature coupling capacitor - Google Patents
Miniature coupling capacitor Download PDFInfo
- Publication number
- LU100566B1 LU100566B1 LU100566A LU100566A LU100566B1 LU 100566 B1 LU100566 B1 LU 100566B1 LU 100566 A LU100566 A LU 100566A LU 100566 A LU100566 A LU 100566A LU 100566 B1 LU100566 B1 LU 100566B1
- Authority
- LU
- Luxembourg
- Prior art keywords
- sealing ring
- coupling capacitor
- core
- porcelain bushing
- sealing
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 21
- 230000008878 coupling Effects 0.000 title claims abstract description 18
- 238000010168 coupling process Methods 0.000 title claims abstract description 18
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 45
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 17
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/10—Housing; Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/224—Housing; Encapsulation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The present invention discloses a miniature coupling capacitor. The miniature coupling capacitor comprises a core (1), a metal expander (2) and a porcelain bushing (3), wherein the core (1) and the metal expander (2) are arranged in the porcelain bushing (3), the metal expander (2) is located at the top of the core (1), a casing flange (4), a sealing ring (5) and a sealing cover (6) are arranged at the bottom of the porcelain bushing (3), the sealing ring (5) is located between the casing flange (4) and the sealing cover (6), a plurality of protrusions (7) are respectively arranged on two side faces of the sealing ring (5), an elastic ball (8) is embedded in each protrusion (7), a plurality of recesses (9) are respectively formed in the middle parts of opposite surfaces of the casing flange (4) and the sealing cover (6), and the recesses (9) and the protrusions (7) are matched with each other. The miniature coupling capacitor provided by the present invention has the following advantages: the pressure of the interior of the porcelain bushing can be effectively regulated; the leakage of the oil medium, caused by deformation after the sealing ring is aged, is ensured not to generate; accidents are prevented from occurring; the quality of power supply is improved; and the service life of the device is prolonged.
Description
MINIATURE COUPLING CAPACITOR
BACKGROUND
Technical Field
The present invention relates to the field of coupling capacitor and transformer manufacture and application, and in particular to a miniature coupling capacitor.
Related Art
In recent years, coupling capacitors have burnout and explosion accidents from time to time, and preventive tests for these capacitors are qualified before the accidents happen, but the accidents will happen after these capacitors are putted into operation for a while. The specific reasons are: the temperature of a coupling capacitor during operation rises to cause that the pressure of the interior of a porcelain bushing generates remarkable variation, a sealing ring is aged to increase a leakage risk of an oil medium, and at this point, breakdown explosion is easy to occur, so unstable factors of product performance are increased.
Summary
In view of disadvantages in the prior art, an objective of the present invention is to provide a miniature coupling capacitor.
In order to achieve the objective described above, a technical scheme adopted by the present invention is as follows: a miniature coupling capacitor comprises a core, a metal expander and a porcelain bushing, wherein the core and the metal expander are arranged in the porcelain bushing, the metal expander is located at the top of the core, a casing flange, a sealing ring and a sealing cover are arranged at the bottom of the porcelain bushing, the sealing ring is located between the casing flange and the sealing cover, a plurality of protrusions are respectively arranged on two side faces of the sealing ring, an elastic ball is embedded in each protrusion, a plurality of recesses are respectively formed in the middle parts of opposite surfaces of the casing flange and the sealing cover, and the recesses and the protrusions are matched with each other.
Preferably, the porcelain bushing is full of an oil medium.
Preferably, the section of the sealing ring is rectangular.
Preferably, a plurality of through holes are formed in parts close to outer edges of the casing flange and the sealing cover.
By adopting the miniature coupling capacitor provided by the present invention, the pressure of the interior of the porcelain bushing can be effectively regulated; the leakage of the oil medium, caused by deformation after the sealing ring is aged, is ensured not to generate; accidents are prevented from occurring; the quality of power supply is improved; and the service life of the device is prolonged.
Brief Description of Drawings FIG. 1 is a structural schematic diagram of the present invention; and FIG. 2 is a structural schematic diagram of a casing flange, a sealing ring and a sealing cover in the present invention.
Description of Embodiments
Embodiments of the present invention are described below in detail in conjunction with accompanying drawings, but the present invention may be implemented by various manners limited and covered by the appended claims.
As shown in FIG. 1 and FIG. 2, a miniature coupling capacitor, provided by the present invention, comprises a core 1, a metal expander 2 and a porcelain bushing 3, wherein the porcelain bushing 3 is full of an oil medium; the metal expander 2 operates as compensation of the volume of the oil medium along with the temperature variation; and when the temperature of the oil medium rises, the volume of the oil medium increases, and the volume of the metal expander 2 reduces, and when the temperature of the oil medium drops, the metal expander 2 expands and the volume of the metal expander 2 increases, thereby ensuring that the capacitor is not under over-high pressure and is always full of the oil medium. The core 1 and the metal expander 2 are arranged in the porcelain bushing 3, the metal expander 2 is located at the top of the core 1, a casing flange 4, a sealing ring 5 and a sealing cover 6 are arranged at the bottom of the porcelain bushing 3, the section of the sealing ring 5 is rectangular, the sealing ring 5 is located between the casing flange 4 and the sealing cover 6, four protrusions 7 are respectively arranged on two side faces of the sealing ring 5, an elastic ball 8 is embedded in each protrusion 7, four recesses 9 are respectively formed in the middle parts of opposite surfaces of the casing flange 4 and the sealing cover 6, and the recesses 9 and the protrusions 7 are matched with each other to ensure the sealing effect.
In an embodiment, fourthrough holes 11 are formed in parts close to outer edges of the casing flange 4 and the sealing cover 6, and bolts respectively penetrate through the through holes 11 in the outer edges of the casing flange 4 and the sealing cover 6 and then are respectively locked by nuts, thereby forming the first seal via an internal opening of the sealing ring 5; and when the pressure is relatively larger, the protrusions 7 of the sealing rings 5 form the second strong seal in the recesses 9 of the casing flange 4 and the sealing cover 6, wherein the elastic balls 8 can prevent the sealing ring 5 from deforming when the sealing ring 5 is aged, thereby obtaining relatively higher compression-resistance seal.
In conclusion, by adopting the miniature coupling capacitor provided by the present invention, the pressure of the interior of the porcelain bushing 3 is effectively regulated through the metal expander 2, and due to the matching between the protrusions 7 of the sealing ring 5 and the recesses 6 of the casing flange 4 and the sealing cover 6 and the supporting of the elastic balls 8 to the sealing ring 5, the leakage of the oil medium, caused by deformation after the sealing ring 5 is aged, is ensured not to generate, accidents are prevented from occurring, the quality of power supply is improved, and the service life of the device is prolonged.
The foregoing descriptions are merely preferable embodiments of the present invention, and the protection scope of the present invention is not limited thereto. All equivalent structural or process changes made according to the content of this specification and accompanying drawings in the present invention or by directly or indirectly applying the present invention in other relevant technical fields shall fall 1 within the protection scope of the present invention.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU100566A LU100566B1 (en) | 2017-12-18 | 2017-12-18 | Miniature coupling capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU100566A LU100566B1 (en) | 2017-12-18 | 2017-12-18 | Miniature coupling capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU100566B1 true LU100566B1 (en) | 2018-03-21 |
Family
ID=65241889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU100566A LU100566B1 (en) | 2017-12-18 | 2017-12-18 | Miniature coupling capacitor |
Country Status (1)
| Country | Link |
|---|---|
| LU (1) | LU100566B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767451A (en) * | 2019-10-31 | 2020-02-07 | 国网青海省电力公司电力科学研究院 | High-voltage non-corona resonant capacitor |
-
2017
- 2017-12-18 LU LU100566A patent/LU100566B1/en active IP Right Grant
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767451A (en) * | 2019-10-31 | 2020-02-07 | 国网青海省电力公司电力科学研究院 | High-voltage non-corona resonant capacitor |
| CN110767451B (en) * | 2019-10-31 | 2022-01-25 | 国网青海省电力公司电力科学研究院 | High-voltage non-corona resonant capacitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG | Patent granted |
Effective date: 20180321 |