CN201340770Y - Wall bushing - Google Patents
Wall bushing Download PDFInfo
- Publication number
- CN201340770Y CN201340770Y CNU2008202098409U CN200820209840U CN201340770Y CN 201340770 Y CN201340770 Y CN 201340770Y CN U2008202098409 U CNU2008202098409 U CN U2008202098409U CN 200820209840 U CN200820209840 U CN 200820209840U CN 201340770 Y CN201340770 Y CN 201340770Y
- Authority
- CN
- China
- Prior art keywords
- wall bushing
- bus
- bushing
- wall
- shading ring
- 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
Links
Images
Landscapes
- Insulators (AREA)
Abstract
The utility model relates to a wall bushing, comprising a bushing body (1); the wall bushing has main characteristics that the inner part of the bushing body (1) is provided with a shielding ring (3) which is fixedly connected with a flange insert (5); the inner cavity of the bushing body (1) is provided with a pressure equalizing sleeve (2), a bus (7) penetrates through an equi-potential coupling device (4) which is connected with the pressure equalizing sleeve (2). The wall bushing is arranged on a metal shell of a cabinet body by the flange insert (5); the equi-potential coupling device (4) is connected with the bus (7) and the pressure equalizing sleeve (2) for realizing equal potential of the bus and the wall bushing. The wall bushing has the beneficial effects that: the whole design is rational, the wall bushing leads the high-pressure bus and a pressure equalizing ring to be reliably connected by the equi-potential coupling device, thereby improving the distribution of wall inner electric field. Meanwhile, by effectively connecting the shielding net by a shielding cover and a mounting insert, the problem of corona discharge is solved, and the wall bushing is ensured to meet GB or IEC standard. The wall bushing improves the distribution of the electric field, greatly reduces local discharge level of the wall bushing, solves the corona discharge and ensures the reliability of the system operation.
Description
Technical field:
The utility model relates to a kind of wall bushing.
Background technology:
Wall bushing is one of main insulating part of ac metal closing switch gear, as the insulation protection of High-Voltage Electrical Appliances connection between each compartment in the ac metal closing switch gear.The wall bushing that present every profession and trade generally adopts is the production technology of whole epoxy casting, though it is big to have rated current, good insulation preformance, the mechanical strength height, the characteristics that overall dimension is little, but its electrical strength and mechanical strength all depend on the level of epoxy casting itself and production technology, there is not other annex (such as all pressing facility or shield facility) to give security for the reliability of its use, so in use for many years, expose some problems, be mainly reflected in non-uniform electric, discharge inception voltage is lower, wherein phenomenon is particularly outstanding on the switchgear of 40.5kV electric pressure, the normal operation of harm equipment took place once that certain electric substation finds the sleeve pipe decreased performance when carrying out preventive trial and the case that must not carry out batch replacement.
The utility model content:
The purpose of this utility model is to avoid the deficiencies in the prior art part and a kind of wall bushing is provided.To solve existing common wall bushing non-uniform electric, discharge inception voltage is low, the problem that bus is aging.
The purpose of this utility model can be by realizing by the following technical solutions: a kind of wall bushing, include union body (1), and it is characterized in that the inside of described union body (1) is provided with shading ring (3), shading ring (3) is connected with flange inserts (5); Inner chamber at described union body (1) is provided with equal gland (2), and bus (7) passes equipotential coupling arrangement (4), and equipotential coupling arrangement (4) connects with equal gland (2).Wall bushing is installed on the metal shell of cabinet by flange inserts (5).Equipotential coupling arrangement (4) connects bus (7) and equal gland (2), realizes the equipotential of bus and wall bushing.
The middle part of described equipotential coupling arrangement (4) connects with bus (7), two ends are provided with coupling bar (4-1), be provided with end cap (4-2) in the end of coupling bar (4-1), be provided with stage clip (4-3) in the bar portion of coupling bar (4-1), end cap (4-2) is pressed in equal gland (2).
Described wall bushing also includes in the both sides of equipotential coupling arrangement (4) and is provided with bus clamping plate (6), and the periphery of bus clamping plate (6) connects with equal gland (2), and its middle part is provided with slotted hole.Bus (7) passes the slotted hole at bus clamping plate (6) middle part, has reduced rocking of bus (7).
Described union body (1) is an epoxy resin poured body.
Described shading ring (3) adopts netted metal material to make the cylindrical shape of shielding action.The skeleton of described shading ring (3) is red copper wire (3-3), and (3-2) is connected with the brass screen cloth, and shading ring (3) is affixed by brass line (3-1) and flange inserts (5).
Described equal gland (2) adopts semi-conducting material to make cylindrical shape.Improve Electric Field Distribution.
At non-uniform electric, defectives such as discharge inception voltage is lower, for adapting to the safe and reliable use of ac metal closing switch gear, in the technology of fully understanding similar products at home and abroad, analyze the characteristics of various product, collected the feedback opinion of each user and manufacturer, guidance by the relevant expert of each high-voltage switch gear industry, carry out the analysis of electric field means by U.S. ANSYS analysis software, draw the method for having only by adopting built-in equal gland and mounting flange being shielded, could fundamentally solve the phenomenon of non-uniform electric and corona discharge.
The beneficial effects of the utility model are: the utility model global design is more reasonable.This wall bushing with high voltage bus and grading ring positive connection, has improved the distribution of internal electric field through walls by the equipotential coupling arrangement.Simultaneously, effectively connect gauze screen with the installation inserts, solved the problem of corona discharge, guaranteed that simultaneously wall bushing satisfies the standard of GB or IEC by radome.The utility model improves Electric Field Distribution, and the office that greatly reduces wall bushing discharges water flat, and has solved the corona discharge phenomenon.Guarantee reliability of system operation.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is equal gland schematic diagram;
Fig. 3 (A) is the structural representation of shading ring;
Fig. 3 (B) is that schematic diagram is looked on the left side of shading ring;
Fig. 4 is the structural representation of equipotential coupling arrangement;
Fig. 5 is the structural representation of bus clamping plate.
Embodiment:
Be described in further detail below in conjunction with the most preferred embodiment shown in the accompanying drawing:
See Fig. 2, described equal gland 2 adopts semi-conducting material to make cylindrical shape.
See Fig. 3, described shading ring 3 adopts netted metal material to make the cylindrical shape of shielding action.The skeleton of described shading ring 3 is red copper wire 3-3, and 3-2 is connected with the brass screen cloth, and shading ring 3 is by brass line 3-1 and 5 welding of flange inserts.Wall bushing is installed in by inserts 5 on the metal shell of cabinet, and whole like this wall bushing shell directly is connected with the earth by the cabinet shell, forms a gauze screen, has improved the discharge inception voltage of wall bushing.
See Fig. 4, the middle part of equipotential coupling arrangement 4 connects with bus 7, and two ends are provided with coupling bar 4-1, are provided with end cap 4-2 in the end of coupling bar 4-1, is provided with stage clip 4-3 in the bar portion of coupling bar 4-1, and end cap 4-2 is pressed in equal gland 2.Equipotential coupling arrangement 4 is installed on the high-pressure metal body bus 7, coupling bar 4-1 is used for equipotential coupling arrangement 4 location and guiding, effect by stage clip 4-3, end cap 4-2 links together with equal gland 2, by equipotential coupling arrangement 4 bus 7 and equal gland 2 are linked together, reduced the electric potential gradient between high-pressure metal body bus 7 and the epoxy casting body sleeve pipe 1, make between high-pressure metal body bus 7 and the epoxy casting body sleeve pipe 1 for the equipotential body, improved Electric Field Distribution.
See Fig. 5, be provided with bus clamping plate (6) in the both sides of equipotential coupling arrangement (4), the periphery of bus clamping plate (6) connects with equal gland (2), and its middle part is provided with slotted hole.Bus (7) passes the slotted hole at bus clamping plate (6) middle part, has reduced rocking of bus (7).
Claims (7)
1. a wall bushing includes union body (1), it is characterized in that the inside of described union body (1) is provided with shading ring (3), and shading ring (3) is connected with flange inserts (5); Inner chamber at described union body (1) is provided with equal gland (2), and bus (7) passes equipotential coupling arrangement (4), and equipotential coupling arrangement (4) connects with equal gland (2).
2. wall bushing as claimed in claim 1, it is characterized in that: the middle part of described equipotential coupling arrangement (4) connects with bus (7), two ends are provided with coupling bar (4-1), be provided with end cap (4-2) in the end of coupling bar (4-1), bar portion at coupling bar (4-1) is provided with stage clip (4-3), and end cap (4-2) is pressed on the equal gland (2).
3. wall bushing as claimed in claim 1 is characterized in that: also include in the both sides of equipotential coupling arrangement (4) and be provided with bus clamping plate (6), the periphery of bus clamping plate (6) connects with equal gland (2), and its middle part is provided with slotted hole.
4. wall bushing as claimed in claim 1 is characterized in that: described union body (1) is an epoxy resin poured body.
5. wall bushing as claimed in claim 1 is characterized in that: described shading ring (3) adopts netted metal material to make the cylindrical shape of shielding action.
6. wall bushing as claimed in claim 4 is characterized in that: the skeleton of described shading ring (3) is red copper wire (3-3), and (3-2) is connected with the brass screen cloth, and shading ring (3) is affixed by brass line (3-1) and flange inserts (5).
7. wall bushing as claimed in claim 1 is characterized in that: described equal gland (2) adopts semi-conducting material to make cylindrical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202098409U CN201340770Y (en) | 2008-11-28 | 2008-11-28 | Wall bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202098409U CN201340770Y (en) | 2008-11-28 | 2008-11-28 | Wall bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201340770Y true CN201340770Y (en) | 2009-11-04 |
Family
ID=41236313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202098409U Expired - Fee Related CN201340770Y (en) | 2008-11-28 | 2008-11-28 | Wall bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201340770Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801123A (en) * | 2012-07-10 | 2012-11-28 | 江苏电科电气设备有限公司 | 20KV sleeve |
| CN102969684A (en) * | 2012-11-27 | 2013-03-13 | 浙江省开化七一电力器材有限责任公司 | Wall bushing for high-tension switch cabinet |
| CN103269066A (en) * | 2013-04-26 | 2013-08-28 | 浙江省开化七一电力器材有限责任公司 | Shielding arc extinction device |
| CN104979056A (en) * | 2015-07-09 | 2015-10-14 | 新疆特变电工自控设备有限公司 | High-voltage balancing sleeve structure used in 40.5kV sleeve and contact box |
| CN105743053A (en) * | 2014-12-08 | 2016-07-06 | 北京瑞恒新源投资有限公司 | Capacitive cable terminal without insulating medium filling |
| CN106469594A (en) * | 2015-08-19 | 2017-03-01 | 北京天威瑞恒高压套管有限公司 | High voltage insulation structure, cable termination, bus, bushing and bushing shell for transformer |
| WO2018132951A1 (en) * | 2017-01-17 | 2018-07-26 | 清华大学 | Wall bushing using non-linear conductive composite material-based voltage equalization structure |
-
2008
- 2008-11-28 CN CNU2008202098409U patent/CN201340770Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801123A (en) * | 2012-07-10 | 2012-11-28 | 江苏电科电气设备有限公司 | 20KV sleeve |
| CN102801123B (en) * | 2012-07-10 | 2015-04-29 | 江苏电科电气设备有限公司 | 20KV sleeve |
| CN102969684A (en) * | 2012-11-27 | 2013-03-13 | 浙江省开化七一电力器材有限责任公司 | Wall bushing for high-tension switch cabinet |
| CN103269066A (en) * | 2013-04-26 | 2013-08-28 | 浙江省开化七一电力器材有限责任公司 | Shielding arc extinction device |
| CN105743053A (en) * | 2014-12-08 | 2016-07-06 | 北京瑞恒新源投资有限公司 | Capacitive cable terminal without insulating medium filling |
| CN105743053B (en) * | 2014-12-08 | 2019-02-05 | 北京瑞恒新源投资有限公司 | A kind of capacitance type cable terminal being not filled with dielectric |
| CN104979056A (en) * | 2015-07-09 | 2015-10-14 | 新疆特变电工自控设备有限公司 | High-voltage balancing sleeve structure used in 40.5kV sleeve and contact box |
| CN106469594A (en) * | 2015-08-19 | 2017-03-01 | 北京天威瑞恒高压套管有限公司 | High voltage insulation structure, cable termination, bus, bushing and bushing shell for transformer |
| CN106469594B (en) * | 2015-08-19 | 2018-05-29 | 北京天威瑞恒高压套管有限公司 | Bushing shell for transformer |
| WO2018132951A1 (en) * | 2017-01-17 | 2018-07-26 | 清华大学 | Wall bushing using non-linear conductive composite material-based voltage equalization structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201340770Y (en) | Wall bushing | |
| CN201036092Y (en) | Shielding high-voltage insulating tube | |
| CN202256571U (en) | Leakage current signal lead-out device of power transformer sleeve for online monitoring | |
| CN201667521U (en) | Wall sleeve | |
| CN103456474B (en) | A kind of combined transformer low-tension bushing | |
| CN203481019U (en) | Combined type transformer low-voltage bushing | |
| CN202305586U (en) | Interface device for transformer casing pipe | |
| CN201584663U (en) | Busbar insulating sleeve of 24KV switch cabinet | |
| CN208127822U (en) | The cross separable connector of high-tension switch cabinet | |
| CN203085768U (en) | Conveniently detachable type end screen grounding device | |
| CN203674523U (en) | Connection bus used for connecting connection cabinet with switch cabinet | |
| CN202796282U (en) | Elliptoid bus insulated sleeve | |
| CN203552917U (en) | Current transformer for solid-insulation ring main unit | |
| CN209313085U (en) | A kind of dedicated elbow-type ground line of net cabinet | |
| CN207868779U (en) | A kind of inner cone plugging formula solid insulated busbar terminal | |
| CN202305587U (en) | Standard interface device for leading out leakage current signal of bushing of power transformer | |
| CN206249975U (en) | A kind of support insulator of embedded metal shielding construction | |
| CN204030288U (en) | A kind of 40.5kV switch cubicle three shielding small size contact boxs | |
| CN203367769U (en) | Fusing chamber | |
| CN201444171U (en) | Wall bushing mounting voltage transducer | |
| CN201466555U (en) | Contact box for air-insulated metal-enclosed switchgear | |
| CN205282675U (en) | Bus connecting device | |
| CN208835678U (en) | A kind of plug-in type high-pressure wall bushing device | |
| CN203572853U (en) | Grounding device in a box body of a high-voltage metering box | |
| CN202772487U (en) | Enclosed insulating cylinder with upper portion isolated from lower portion |
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: 20091104 Termination date: 20151128 |