CN104465080A - Oil-immersed power capacitor cover plate assembly - Google Patents
Oil-immersed power capacitor cover plate assembly Download PDFInfo
- Publication number
- CN104465080A CN104465080A CN201410676619.4A CN201410676619A CN104465080A CN 104465080 A CN104465080 A CN 104465080A CN 201410676619 A CN201410676619 A CN 201410676619A CN 104465080 A CN104465080 A CN 104465080A
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- terminal
- cover plate
- face
- conducting bolt
- oil
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Abstract
The invention relates to an oil-immersed power capacitor cover plate assembly which comprises a cover plate and an insulating terminal fixed to the cover plate. The insulating terminal comprises an upper terminal body, a lower terminal body, a sealing sleeve, a conductive bolt and a locking nut. Seal rings are arranged between the head portion of the conductive bolt and the lower end face of the lower terminal body, between the upper end face of the lower terminal body and the cover plate and between the lower end face of the upper terminal body and the cover plate for end face sealing. Circumferential sealing is conducted between the upper terminal body and a shaft part of the conductive bolt. Multiple seals are set through the multiple end faces and the circumferential faces, and therefore the sealing performance is quite good, and the oil leakage of a capacitor can be effectively avoided.
Description
Technical field
The present invention relates to a kind of oil-immersed type power capacitor, specifically a kind of oil-immersed type power capacitor cover board component.
Background technology
An oil-immersed type power capacitor ubiquity sealing difficult problem in the market, poor sealing causes leaking oil condition and occurs.Leakage of oil not only can make capacitor outward appearance have spot, and once runs into naked light or the easy breaking out of fire of spark.In addition, leakage of oil too much can cause the heat dispersion of capacitor to decline, and even can have influence on the normal use of capacitor.
Patent documentation CN201698903U discloses a kind of oil-immersed type power capacitor, Sealed casing pipe is adopted to seal between the upper and lower terminal of insulated terminal, that is: the embedded hole embedded for Sealed casing pipe is provided with bottom lower terminal and upper terminal, Sealed casing pipe is sleeved on inverted conducting bolt, when locking nut to coordinate with conducting bolt from top to bottom upper and lower terminal is fixed on cover plate time, Sealed casing pipe is embedded in the embedded hole bottom lower terminal and upper terminal, seals upper and lower terminal.Because the coupling mechanism force of insulated terminal can be regulated by outside, therefore, when capacitor is fixed on after on busbar, by placing the locking nut being arranged on insulated terminal upper end, locking insulated terminal, thus prevent its leakage of oil.This patent can prevent capacitor by installing the Leakage caused, its sealing property depends on the sealing between the upper and lower end face of Sealed casing pipe and the head end of upper terminal and conducting bolt on the one hand, depends on the sealing between upper and lower terminal and the upper and lower end face of cover plate on the other hand.Although Sealed casing pipe can adopt rubber or silicone tube to improve sealing property, but the compressive deformation limited capacity of upper and lower terminal, between itself and the upper and lower end face of cover plate, sealing is also limited, conduction oil in capacitor may be oozed out by gap between upper and lower terminal and the upper and lower end face of cover plate, in addition, also upwards may ooze out by between upper terminal and locking nut along conducting bolt, therefore still there is the problem of leakage of oil.
Summary of the invention
The object of this invention is to provide a kind of oil-immersed type power capacitor cover board component, the sealing property of insulated terminal can be improved, effectively prevent capacitor leakage of oil.
The present invention is achieved in that and comprises cover plate and fixing insulated terminal on the cover board, described insulated terminal comprises upper terminal, lower terminal, Sealed casing pipe, conducting bolt and locking nut, the embedded hole embedded for Sealed casing pipe is provided with bottom lower terminal and upper terminal, Sealed casing pipe is sleeved on conducting bolt axle portion, and locking nut coordinates with conducting bolt and is fixed on cover plate by upper and lower terminal from top to bottom; Between the head of conducting bolt and the lower surface of lower terminal, between the upper surface of lower terminal and cover plate, between the lower surface of upper terminal and cover plate, sealing ring is set carries out end face seal; Upper terminal upper end is provided with the sealing ring mounting groove leading to conducting bolt axle position, is provided with sealing ring in tankage, and sealing ring upper end is provided with compress gasket, and locking nut promotes compress gasket compressible seal circle downwards and carries out circumferential sealing to conducting bolt axle portion.
Further, the inner portion of described conducting bolt is provided with the first end face of coordinating with cover plate lower surface and by the second end face coordinated with Sealed casing pipe lower surface protruding laterally in the middle of the first end face.
Preferably, there is the annular projection extended upwardly to above cover plate lower terminal upper end, and the insulated terminal installing hole tight fit on annular projection external diameter and cover plate, is provided with the slot that can embed for the annular projection of lower terminal outside Sealed casing pipe embedded hole bottom upper terminal.
As shown from the above technical solution, the present invention passes through between the head and the lower surface of lower terminal of conducting bolt, adopt sealing ring to carry out end face seal between the upper surface of lower terminal and cover plate, effectively can prevent the conduction oil in capacitor from directly exosmosing or enter in Sealed casing pipe embedded hole; And sealing ring is set respectively between the lower surface of upper terminal and the axle portion of cover plate and conducting bolt carries out end face seal and circumferential seal, can prevent the oil infiltrated in Sealed casing pipe embedded hole from again exosmosing further, therefore multiple-sealed by arranging, make sealing property very good, can effectively prevent capacitor leakage of oil.In addition, conducting bolt inner portion arranges two end faces increased successively, can shorten the length of Sealed casing pipe, can reduce its compress variation, improves it to upper and lower two end faces and the sealing effectiveness to conducting bolt periphery.In a preferred approach, being embedded bottom upper terminal by cover plate of lower terminal upper end annular projection, can be positioned insulated terminal position on the cover board, prevents insulated terminal from sliding and abradable seal circle in lid surface.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, the implication of label symbol is as follows:
1-conducting bolt 11-head 111-first end face 112-second end face 12-axle portion 2-upper terminal 3-lower terminal 31-annular projection 4-locking nut 5-compress gasket 6-Sealed casing pipe 71 ~ 74-sealing ring 8-cover plate
Embodiment
Below in conjunction with accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the insulated terminal that the present invention includes cover plate 8 and be fixed on cover plate 8, described insulated terminal comprises upper terminal 2, lower terminal 3, Sealed casing pipe 6, conducting bolt 1 and locking nut 4, the embedded hole embedded for Sealed casing pipe 6 is provided with bottom lower terminal 2 and upper terminal 3, Sealed casing pipe 6 is sleeved in the axle portion 12 of conducting bolt 4 lower end, is provided with the first end face 111 of coordinating with cover plate 8 lower surface and by the second end face 112 coordinated with Sealed casing pipe 6 lower surface protruding laterally in the middle of the first end face 111 inside the head 11 of conducting bolt.
Upper terminal 8 upper end is provided with the sealing ring mounting groove leading to Zhou Bu12 position, conducting bolt lower end, in above-mentioned each mounting groove, sealing ring 71 is housed respectively, sealing ring 71 upper end in the mounting groove of upper terminal 8 upper end is provided with compress gasket 5, carries out circumferential sealing when locking nut 4 is rotated down and promotes compress gasket 5 compressible seal circle 71 pairs of conducting bolt axle portions 12.The lower surface of upper terminal 2 is provided with the sealing ring mounting groove coordinated with cover plate 8 upper surface, the upper and lower end face of lower terminal 3 is respectively equipped with the sealing ring mounting groove coordinated with the first end face 111 inside the head 11 of cover plate 8 lower surface and conducting bolt, and sealing ring 72,73,74 is housed in each mounting groove respectively.When locking nut 4 to coordinate with conducting bolt 1 from top to bottom upper and lower terminal 2,3 is fixed on cover plate 8 time, lower surface and cover plate 8 upper surface of sealing ring 72 pairs of upper terminals 2 carry out end face seal; Sealing ring 73,74 carries out end face seal to the first end face 111 inside the upper and lower end face of lower terminal 3 and the head 11 of cover plate 8 lower surface and conducting bolt respectively.Meanwhile, Sealed casing pipe 6 pairs of upper terminal 2 embedded hole lower surfaces, conducting bolt head second end face 112 carry out end face seal and to conducting bolt axle portion 12 circumferential sealing.
Slide in lid surface for preventing insulated terminal, there is the annular projection 31 extended upwardly to above cover plate 8 lower terminal 3 upper end, insulated terminal installing hole tight fit on annular projection 31 external diameter and cover plate 8, is provided with the slot that can embed for the annular projection 31 of lower terminal 3 outside Sealed casing pipe 6 embedded hole bottom upper terminal 2.When after upper and lower terminal installation, annular projection 31 forms circumferential sealing with the installation hole wall of cover plate.
Claims (3)
1. oil-immersed type power capacitor cover board component, comprise cover plate (8) and fixing insulated terminal on the cover board, described insulated terminal comprises upper terminal (2), lower terminal (3), Sealed casing pipe (6), conducting bolt (1) and locking nut (4), lower terminal (2) and upper terminal (3) bottom are provided with the embedded hole embedded for Sealed casing pipe (6), Sealed casing pipe (6) is sleeved on conducting bolt axle portion (12), locking nut (4) coordinates from top to bottom by upper with conducting bolt (1), lower terminal (2, 3) be fixed on cover plate (8), it is characterized in that: between the head (11) of conducting bolt and the lower surface of lower terminal (3), between the upper surface of lower terminal (3) and cover plate (8), between the lower surface of upper terminal (2) and cover plate (8), sealing ring (74,73,72) is set carries out end face seal, upper terminal (2) upper end is provided with the sealing ring mounting groove leading to conducting bolt axle portion (12) position, sealing ring (71) is installed in tankage, sealing ring (71) upper end is provided with compress gasket (5), and locking nut (4) promotes compress gasket (5) compressible seal circle (71) downwards and carries out circumferential sealing to conducting bolt axle portion (12).
2. oil-immersed type power capacitor cover board component according to claim 1, is characterized in that: be provided with the first end face (111) coordinated with cover plate (8) lower surface and the second end face (112) coordinated with Sealed casing pipe (6) lower surface by the middle projection laterally of the first end face inside the head (11) of described conducting bolt.
3. oil-immersed type power capacitor cover board component according to claim 1 and 2, it is characterized in that: there is the annular projection (31) extending upwardly to cover plate (8) top lower terminal (3) upper end, insulated terminal installing hole tight fit on annular projection (31) external diameter and cover plate (8), upper terminal (2) bottom is provided with the slot that can embed for the annular projection (31) of lower terminal outside Sealed casing pipe (6) embedded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410676619.4A CN104465080A (en) | 2014-11-21 | 2014-11-21 | Oil-immersed power capacitor cover plate assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410676619.4A CN104465080A (en) | 2014-11-21 | 2014-11-21 | Oil-immersed power capacitor cover plate assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104465080A true CN104465080A (en) | 2015-03-25 |
Family
ID=52910989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410676619.4A Pending CN104465080A (en) | 2014-11-21 | 2014-11-21 | Oil-immersed power capacitor cover plate assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104465080A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767452A (en) * | 2019-12-01 | 2020-02-07 | 无锡市电力滤波有限公司 | Sealing insulation structure of connecting terminal of dry power electronic capacitor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2308153Y (en) * | 1997-09-15 | 1999-02-17 | 周庆轩 | Assembly power capacitor line terminal |
| DE102008050707A1 (en) * | 2008-09-18 | 2010-04-01 | Electronicon Kondensatoren Gmbh | Low-inductance, partial discharge arm, electrical housing bushing-external connection for insulated electronic device i.e. direct current condenser, has pressure disk centered and guided by cylindrical section of bolt or nut |
| CN202474062U (en) * | 2011-12-19 | 2012-10-03 | 梅岭化工厂 | Lithium battery terminal sealing structure |
| CN103489635A (en) * | 2013-09-06 | 2014-01-01 | 安徽赛福电子有限公司 | Sealing and insulating leading-out terminal for capacitor |
| JP2014035870A (en) * | 2012-08-08 | 2014-02-24 | Toyota Industries Corp | Power storage device |
| CN204270877U (en) * | 2014-11-21 | 2015-04-15 | 安徽铜峰电子股份有限公司 | Oil-immersed type power capacitor cover board component |
-
2014
- 2014-11-21 CN CN201410676619.4A patent/CN104465080A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2308153Y (en) * | 1997-09-15 | 1999-02-17 | 周庆轩 | Assembly power capacitor line terminal |
| DE102008050707A1 (en) * | 2008-09-18 | 2010-04-01 | Electronicon Kondensatoren Gmbh | Low-inductance, partial discharge arm, electrical housing bushing-external connection for insulated electronic device i.e. direct current condenser, has pressure disk centered and guided by cylindrical section of bolt or nut |
| CN202474062U (en) * | 2011-12-19 | 2012-10-03 | 梅岭化工厂 | Lithium battery terminal sealing structure |
| JP2014035870A (en) * | 2012-08-08 | 2014-02-24 | Toyota Industries Corp | Power storage device |
| CN103489635A (en) * | 2013-09-06 | 2014-01-01 | 安徽赛福电子有限公司 | Sealing and insulating leading-out terminal for capacitor |
| CN204270877U (en) * | 2014-11-21 | 2015-04-15 | 安徽铜峰电子股份有限公司 | Oil-immersed type power capacitor cover board component |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767452A (en) * | 2019-12-01 | 2020-02-07 | 无锡市电力滤波有限公司 | Sealing insulation structure of connecting terminal of dry power electronic capacitor |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |