CN202737431U - Dish type bus bushing - Google Patents
Dish type bus bushing Download PDFInfo
- Publication number
- CN202737431U CN202737431U CN 201220389220 CN201220389220U CN202737431U CN 202737431 U CN202737431 U CN 202737431U CN 201220389220 CN201220389220 CN 201220389220 CN 201220389220 U CN201220389220 U CN 201220389220U CN 202737431 U CN202737431 U CN 202737431U
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- insulator
- dish type
- bushing
- type bus
- electric field
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Abstract
A dish type bus bushing overcomes the problem that a nonuniform electric field may be produced at a transition position between a surface of an insulator and a copper conductor or a transition position between the surface of the insulator and an annular flange of the present dish type bus bushing due to impurity, thereby reducing a voltage withstand level. The dish type bus bushing is characterized in that a copper conductor is connected with annular shielding rings, an insulator has a dish type structure which has symmetrical upper and lower surfaces and is provided with an annular projection, an axial cross section of the annular projection has a circular arc shape. The dish type bus bushing of the utility model has the beneficial effects that: the dish type bus bushing can effectively shield the nonuniform electric field produced due to the impurity, and enables an electric field at a surface of a dish type bushing to be not affected by the impurity such as metal filing through an effect of the shielding rings on the copper conductor or a shielding effect of a mounting flange; the metal filing generated by a moving component in an air chamber can automatically slide into the shielding rings of the copper conductor and a shielding area of the annular flange after falling on the dish type bushing, therefore, the dish type bus bushing of the utility model has the advantages of reliable insulation, uniform electric field, good shielding effect, and capacity for enabling existence of the metal filing to not greatly affect the voltage withstand level of the surface of the insulator.
Description
Technical field
The utility model belongs to high voltage electrical apparatus technical field, a kind of dish formula bus casing that particularly connects for bus between two sealed unit of metal enclosed switchgear of dry air or nitrogen gas insulating.
Background technology
Bus insulating bush is to carry out the main transition insulation component that conductor connects on the Cubicle Gas-Insulated Switchgear between the different sealed unit, and its insulation property directly affect operational reliability and the personal safety of Cubicle Gas-Insulated Switchgear.In Cubicle Gas-Insulated Switchgear, the internal cone type bus casing is generally used in the connection of two sealed unit at present, be disclosed in 201020248360.0 patent applications " a kind of assembled internal bevel bus bushing " such as application number, need use two inner cone sleeve pipes and a plug-in connector to make up when adopting this sleeve pipe that two sealed unit buses are connected, this syndeton is complicated, axial dimension is large, cost of manufacture is high, adopt in addition spring contact to be connected between sleeve pipe and the plug-in connector, contact resistance is larger, flow conductivity is limited to some extent, sleeve pipe is subjected to the impact of surface impurity larger, the metallic that produces when movable member moves in the top sealed unit drops on sleeve surface, can greatly reduce the sleeve surface dielectric strength, and therefore this structure must adopt SF6 gas could satisfy certain insulating requirements.
In order to address the above problem, application number is 201120410019.5, name is called and discloses a kind of a kind of dish formula bus casing that connects for bus between two sealed unit of metal enclosed switchgear of dry air or nitrogen gas insulating in the patent of " a kind of dish formula bus casing ", the technical scheme that adopts comprises epoxyresin insulator, copper electric conductor on the epoxyresin insulator central axis, the mounting flange that has the shading ring effect at the epoxyresin insulator circumference, described copper electric conductor two ends are processed with the high pressure splicing ear, be processed with wiring hole on the high pressure splicing ear, be provided with for the sealed groove that O shape O-ring seal is installed at epoxyresin insulator, be processed with installing hole at mounting flange.By its Figure of description as seen, upper and lower surface is the plane in the middle of the little drum in the middle of its copper electric conductor, epoxyresin insulator.Find in actual use, if insulator surface and copper electric conductor transition position have the impurity such as metal fillings, will produce non-uniform electric field because of impurity; If insulator surface and annular flange transition position have the impurity such as metal fillings, also can make the electric field of dish formula sleeve surface be subjected to the impact of the impurity such as metal fillings, thereby reduce withstand voltage level; In addition, because upper and lower surface is the plane in the middle of the epoxyresin insulator, after the metal fillings that moving component in the upper chamber produces is fallen on the dish formula sleeve pipe, will rest on the upper plane of epoxyresin insulator, can affect like this withstand voltage level of insulator surface, in addition, because little drum in the middle of the copper electric conductor, if adopt copper rod processing, not only processing difficulties, and waste material.
Summary of the invention
Technical problem to be solved in the utility model is, overcome the deficiencies in the prior art part, provide to satisfy and utilize dry air or nitrogen gas insulating, and can effectively shield the non-uniform electric field that produces because of the existence of impurity, improve a kind of dish formula bus casing of dish formula sleeve pipe withstand voltage level.
The technical solution adopted in the utility model comprises insulator, mounting flange and copper electric conductor, the matrix of described copper electric conductor is cylinder, being connected with up and down at the matrix middle part of copper conductor by spoke, 2 cross sections are circular ring shielding ring, described insulator is the dish formula structure with annular projection of upper and lower surface symmetry, and the axial cross section of described annular projection is circular arc.
Compared with prior art, the beneficial effects of the utility model are:
(1) the utility model adopts and by spoke annular shading ring to be installed at the middle part of cylindrical, copper conductor matrix and insulator is butterfly revolving body symmetrical structure, the insulator upper and lower surface has annular projection, make and form 2 concave surfaces on the insulator, one is the first concave surface of insulator intermediate surface and copper electric conductor transition position, another is the second concave surface of insulator surface and annular flange transition position, thereby make the utility model insulation reliable, electric field is even, shield effectiveness is good, if insulator intermediate surface and copper electric conductor transition position have the impurity such as metal fillings, by the effect of the shading ring on the copper electric conductor in the insulator, can effectively shield the non-uniform electric field that produces because of impurity; If insulator surface and annular flange transition position have the impurity such as metal fillings, can make by the shielding action of mounting flange the electric field on dish formula bus casing surface not be subjected to the impact of the impurity such as metal fillings, thereby improve withstand voltage level; Insulator surface has the structure of annular projection, automatic sliding was in the first concave surface of insulator intermediate surface and copper electric conductor transition position and in the second concave surface of insulator surface and annular flange transition position after the metal fillings that the interior moving component of upper chamber is produced was fallen on the dish formula sleeve pipe, be automatic sliding in the shielding area of copper electric conductor shading ring and annular flange, make the existence of metal fillings can excessively not affect the withstand voltage level of insulator surface.
(2) the copper electric conductor is cylindrical shape, and is simple in structure, easy to process, and can save the copper rod material.
Description of drawings
Fig. 1 is main pseudosection of the present utility model;
Fig. 2 is vertical view of the present utility model;
Fig. 3 is stereogram of the present utility model;
Fig. 4 is copper electric conductor stereogram of the present utility model;
Fig. 5 is the schematic diagram of installing and using of the present utility model.
Among the figure:
1. copper electric conductor;
1-1. planar high-voltage splicing ear; 1-2. wiring hole; 1-3. shading ring;
2. insulator;
2-1. sealed groove; 2-2. the first concave surface, 2-3. the second concave surface, the 2-4. annular projection,
3. mounting flange; 3-1. installing hole;
4. the first sealed unit high voltage bus;
5. the first sealed unit;
6. the first sealed unit housing;
7.O shape O-ring seal;
8. the second sealed unit;
9. the second sealed unit housing;
10. the second sealed unit high voltage bus.
Embodiment
Such as Fig. 1 ~ shown in Figure 4, the utility model comprises insulator 2, be provided with for the sealed groove 2-1 that O shape O-ring seal is installed at insulator 2, the outer rim of insulator 2 has been provided with the mounting flange 3 of shielding action along circumference, be processed with installing hole 3-1 at mounting flange 3, be provided with cylindrical, copper electric conductor 1 at insulator 2 central axis, the matrix two ends of described copper electric conductor 1 are processed with planar high-voltage splicing ear 1-1, be processed with wiring hole 1-2 on the planar high-voltage splicing ear 1-1, up and down 2 ring shielding ring 1-3 that cross sections are circle weld by 3 to 4 spokes or are threaded at the middle part of copper conductor 1, when insulator 2 cast, the copper electric conductor 1 of ring shielding ring 1-3 will be installed and be processed with the mounting flange 3 of installing hole 3-1 by mould and carry out poured with epoxy resin after fixing, make between copper electric conductor 1 and the insulator 2 and after cast, become as a whole between mounting flange 3 and the insulator 2, described insulator 2 is the dish formula structure with annular projection 2-4 of upper and lower surface symmetry, the axial cross section of described annular projection 2-4 is circular arc, form 2 concave surfaces at insulator 2, one is the first concave surface 2-2 of insulator 2 intermediate surface and copper electric conductor 1 transition position, and another is the second concave surface 2-3 of insulator surface and annular flange transition position.
As shown in Figure 5, when reality is used, the utility model is installed between the first sealed unit 5 and the second sealed unit 8, be fixed by the installing hole 3-1 on the mounting flange 3 and the second sealed unit housing 9, can prevent that like this dish formula bus casing from rotating around axis, is conducive to carry out the mounting design of sealed unit mesohigh bus relative position; Carrying out the first sealed unit 5 when being connected with the second sealed unit 8, the O shape O-ring seal 7 of in the sealed groove 2-1 that the insulator 2 of butterfly bus casing arranges, packing into, by the first sealed unit housing 6 be connected sealed unit housing 9 and connect dish formula bus casing is compressed, finish the mutual and sealing to external world of two sealed unit, adopt this syndeton can make the mounting flange of dish formula bus casing not bear air chamber gas pressure to external world, like this neither be strict especially to the requirement of dish formula bus casing intensity in the relatively high situation of air chamber pressure; After finishing the mutual sealing that reaches to external world of two sealed unit, the dry air or the nitrogen that are filled with certain pressure in two sealed unit insulate, high voltage bus 10 in high voltage bus 4 in the first sealed unit 5 and the second sealed unit 8 is electrically connected by the wiring hole 1-2 of the high pressure splicing ear 1-1 of copper electric conductor 1, because the coupling part is plane contact, the centre does not have spring contact, contact resistance is reduced greatly, can be test and safe operation and provide safeguard.In use, if there are the impurity such as metal fillings on insulator 2 surfaces with copper electric conductor 1 transition position, by the effect of 2 ring shielding ring 1-3 on the insulator 2 interior copper electric conductors 1, can effectively shield the non-uniform electric field that produces because of impurity; If there are the impurity such as metal fillings on insulator 2 surfaces with annular flange 3 transition positions, can make by the shielding action of mounting flange 3 electric field on dish formula bus casing surface not be subjected to the impact of the impurity such as metal fillings, thereby improve withstand voltage level; Automatic sliding was to the first concave surface 2-2 of insulator 2 intermediate surface and copper electric conductor 1 transition position and the second concave surface 2-3 of insulator surface and annular flange transition position after the metal fillings that moving component produces in the upper chamber was fallen on the dish formula bus casing, in the shielding area of the ring shielding ring 1-3 that is automatic sliding on the copper electric conductor 1 and annular flange 3, make metal fillings can excessively not affect the withstand voltage level of insulator surface, the utility model insulation is reliable, electric field is even, withstand voltage level is high thereby make.
Claims (2)
1. dish formula bus casing, comprise insulator (2), mounting flange (3) and copper electric conductor (1), it is characterized in that, the matrix of described copper electric conductor (1) is cylinder, being connected with up and down at the matrix middle part of copper conductor (1) by spoke, 2 cross sections are circular ring shielding ring (1-3), described insulator (2) is the dish formula structure with annular projection (2-4) of upper and lower surface symmetry, and the axial cross section of described annular projection (2-4) is circular arc.
2. described a kind of dish formula bus casing according to claim 1, it is characterized in that, form 2 concave surfaces at insulator (2), one is first concave surface (2-2) of insulator (2) intermediate surface and copper electric conductor (1) transition position, and another is second concave surface (2-3) of insulator surface and annular flange transition position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220389220 CN202737431U (en) | 2012-08-08 | 2012-08-08 | Dish type bus bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220389220 CN202737431U (en) | 2012-08-08 | 2012-08-08 | Dish type bus bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202737431U true CN202737431U (en) | 2013-02-13 |
Family
ID=47663093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220389220 Expired - Fee Related CN202737431U (en) | 2012-08-08 | 2012-08-08 | Dish type bus bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202737431U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780196A (en) * | 2012-08-08 | 2012-11-14 | 沈阳华德海泰电器有限公司 | Disc-type bus sleeve |
-
2012
- 2012-08-08 CN CN 201220389220 patent/CN202737431U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780196A (en) * | 2012-08-08 | 2012-11-14 | 沈阳华德海泰电器有限公司 | Disc-type bus sleeve |
| CN102780196B (en) * | 2012-08-08 | 2015-09-02 | 沈阳华德海泰电器有限公司 | A kind of dish-style bus casing |
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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: 20130213 Termination date: 20150808 |
|
| EXPY | Termination of patent right or utility model |