CN204680979U - A kind of shielding construction - Google Patents
A kind of shielding construction Download PDFInfo
- Publication number
- CN204680979U CN204680979U CN201520376501.XU CN201520376501U CN204680979U CN 204680979 U CN204680979 U CN 204680979U CN 201520376501 U CN201520376501 U CN 201520376501U CN 204680979 U CN204680979 U CN 204680979U
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- radome
- shielding construction
- vacuum interrupter
- construction according
- fixed contact
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Abstract
The utility model discloses a kind of shielding construction, it comprises the insulating part of curing molding, radome and vacuum interrupter, radome is fixedly arranged between insulating part and vacuum interrupter, the quiet end high pressure primary circuit Joint of radome and vacuum interrupter electricity connect, high pressure primary circuit comprises fixed contact and quiet end, and the quiet end of vacuum interrupter and fixed contact all cover in radome.Its tool has the following advantages: be transferred directly to by the high voltage of quiet end high tension loop on radome with in the insulating part of the more excellent curing molding of insulation property, improve the insulation property of switchgear, reduce the volume of switchgear, reduce manufacturing cost, improve the fail safe of user on product uses.
Description
Technical field
The utility model relates to a kind of shielding construction, especially a kind of shielding construction be applied in switchgear.
Background technology
Middle pressure (3.6kV ~ 40.5kV) switchgear, miniaturized, low cost is the development trend of field of switch equipment in the future.The miniaturization of equipment just requires that component structure is compact, rationally distributed, highly integrated.Compact apparatus as fruit structure and layout design unreasonable, high-pressure conductive bulk electric field will be concentrated, and causes insulating part partial discharge quantity large, long-time running, insulating part will be aging, and insulation property reduce, between phase and phase or the fault that is short-circuited between phase and ground, impact power supply is reliable for proximity switch equipment.Especially in dielectric is gas-insulated (as SF6, CO2, N2 etc. or its mist) or pure air-insulated switchgear; if structural design is unreasonable, the switchgear fault that is short-circuited between phase and phase or relatively often can be caused often to have generation.
Current switchgear can only by increase alternate or relatively between electric clearance from, increase insulating part thickness or conductor rounding and solve Insulation Problems.It has following shortcoming: conductor rounding method is improved electric field and concentrated limited use in actual manufacture; And by increase alternate or relatively between electric clearance from, increase insulating part thickness schemes switchgear will be caused bulky, switching equipment manufacturers manufacturing cost is caused to increase, the user of switchgear is used to have to expand equipment use area, increase use cost, in the running environment that environment is more severe, service equipment cost increases.
Utility model content
The utility model provides a kind of shielding construction, the insulation improvement result which overcoming the prior art switching devices described in background technology is limited, increase electrical distance and insulation thickness and cause that equipment volume is huge, manufacturing cost improves, the shortcoming of device miniaturization cannot be realized.
The utility model solves the technical scheme that its technical problem adopts:
A kind of shielding construction, comprise the insulating part of curing molding, radome and vacuum interrupter, radome is fixedly arranged between insulating part and vacuum interrupter, the quiet end high pressure primary circuit Joint of described radome and vacuum interrupter electricity connect, described high pressure primary circuit comprises fixed contact and quiet end, and the quiet end of described vacuum interrupter and fixed contact all cover in radome.
Among one embodiment: described radome comprises gauze screen, inserts and connecting line, the two ends of described connecting line connect this gauze screen and inserts respectively.
Among one embodiment: described gauze screen is a U-shaped flat member, and the outward flange of described gauze screen is provided with circular flange or rounding.
Among one embodiment: described gauze screen offers through hole.
Among one embodiment: the upper end of described radome exceeds the quiet end capping of vacuum interrupter and at least exceeds 3cm.
Among one embodiment: the lower end of described radome exceeds the fixed contact lower end in vacuum interrupter and at least exceeds 3cm.
Among one embodiment: described inserts is fixedly connected with fixed contact by screw.
Among one embodiment: described inserts is fixedly connected with fixed contact, quiet end capping by screw.
Among one embodiment: the insulating part of described curing molding is the U-shaped component of semi-open-type.
Among one embodiment: described gauze screen, between connecting line and inserts by welding or casting connection.
The technical program is compared with background technology, and its tool has the following advantages:
By increasing shielding case structure, the high voltage of quiet end high tension loop is transferred directly on radome with in the insulating part of the more excellent curing molding of insulation property; The U-shaped sheet of radome contour structures, inner for dynamic/static contact complicated electric field all can be shielded, U-shaped radome surface electric field distribution is even, improves the insulation property of switchgear on the whole; Reduce the volume of switchgear, reducing the consumption of insulating material, meeting under properties of product prerequisite, directly can also reduce manufacturing cost, improve the fail safe of user on product uses.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 depicts the stereochemical structure view of the insulating part of curing molding.
Fig. 2 depicts the stereochemical structure view of radome.
Fig. 3 depicts one of installation view of a kind of shielding construction described in the utility model.
Fig. 4 depicts the installation view two of a kind of shielding construction described in the utility model.
Embodiment
Please refer to Fig. 1 to Fig. 4, a kind of shielding construction, comprise the insulating part 10 of curing molding, radome 20 and vacuum interrupter 30, radome 20 to be fixedly arranged between insulating part 10 and vacuum interrupter 30 and to be cast on shaping insulating part 10.The insulating part 10 of this curing molding is the U-shaped component of semi-open-type.The quiet end high pressure primary circuit Joint of radome 20 and vacuum interrupter 30 electricity connect, and high pressure primary circuit comprises fixed contact 31 and quiet end, and quiet end and the fixed contact 31 of vacuum interrupter all cover in radome 20.
Radome 20 comprises gauze screen 21, inserts 22 and connecting line 23, and the two ends of connecting line 23 connect this gauze screen 21 and inserts 22 respectively.Gauze screen 21, between connecting line 23 and inserts 22 by welding or casting connect.This gauze screen 21 is a U-shaped flat member, and the outward flange of gauze screen 21 is provided with circular flange or rounding 212.Gauze screen 21 offers through hole 211, make the bonding of itself and insulating part 10 more firm.
The upper end of this radome 20 exceeds the quiet end capping of vacuum interrupter 30 and at least exceeds 3cm.The lower end of radome 20 exceeds fixed contact 31 lower end in vacuum interrupter 30 and at least exceeds 3cm, that is, enable radome cover cap live the quiet end of vacuum interrupter, fixed contact and with the moving contact part 32 near fixed contact.
In preferred version, this inserts 22 is fixedly connected with fixed contact 31 by screw 24.In another preferred version, this inserts 22 is fixedly connected with fixed contact 31, quiet end capping three by screw 24 simultaneously, is transferred directly on radome by the high voltage electric field of high pressure primary circuit.
The material of the insulating part 10 of this curing molding can adopt the engineering material such as epoxy resin mixed glue or PA6, PA66, PET, and the material of this radome 20 can adopt semiconductor or metallic conductor.
The insulating part 10 of this curing molding is also installed with ground connection inserts and ground connection installed part 11.
Shielding construction described in the utility model not only goes in the switchgear of solid insulation, is also applicable to gas-insulated (as insulating gas SF
6, CO
2, N
2, or wherein two or more mists etc.) or pure air-insulated switchgear in.High voltage transferred to insulation property more in insulating part by this shielding construction, and radome is set to U-shaped component, surface electric field distribution is even, and improve the insulation property of switchgear on the whole, make product structure compacter, volume is less.
The above, be only the utility model preferred embodiment, therefore the scope that the utility model implements can not be limited according to this, the equivalence namely done according to the utility model the scope of the claims and description change with modify, all should still belong in scope that the utility model contains.
Claims (10)
1. a shielding construction, comprise the insulating part of curing molding, radome and vacuum interrupter, radome is fixedly arranged between insulating part and vacuum interrupter, it is characterized in that: the quiet end high pressure primary circuit Joint of described radome and vacuum interrupter electricity connect, described high pressure primary circuit comprises fixed contact and quiet end, and the quiet end of described vacuum interrupter and fixed contact all cover in radome.
2. a kind of shielding construction according to claim 1, is characterized in that: described radome comprises gauze screen, inserts and connecting line, the two ends of described connecting line connect this gauze screen and inserts respectively.
3. a kind of shielding construction according to claim 2, is characterized in that: described gauze screen is a U-shaped flat member, and the outward flange of described gauze screen is provided with circular flange or rounding.
4. a kind of shielding construction according to Claims 2 or 3, is characterized in that: described gauze screen offers through hole.
5. a kind of shielding construction according to claim 1, is characterized in that: the upper end of described radome exceeds the quiet end capping of vacuum interrupter and at least exceeds 3cm.
6. a kind of shielding construction according to claim 1 or 5, is characterized in that: the lower end of described radome exceeds the fixed contact lower end in vacuum interrupter and at least exceeds 3cm.
7. a kind of shielding construction according to claim 3, is characterized in that: described inserts is fixedly connected with fixed contact by screw.
8. a kind of shielding construction according to claim 3, is characterized in that: described inserts is fixedly connected with fixed contact, quiet end capping by screw.
9. a kind of shielding construction according to claim 1, is characterized in that: the insulating part of described curing molding is the U-shaped component of semi-open-type.
10. a kind of shielding construction according to claim 2, is characterized in that: described gauze screen, between connecting line and inserts by welding or casting connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520376501.XU CN204680979U (en) | 2015-06-03 | 2015-06-03 | A kind of shielding construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520376501.XU CN204680979U (en) | 2015-06-03 | 2015-06-03 | A kind of shielding construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204680979U true CN204680979U (en) | 2015-09-30 |
Family
ID=54180647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520376501.XU Active CN204680979U (en) | 2015-06-03 | 2015-06-03 | A kind of shielding construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204680979U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461266A (en) * | 2018-03-15 | 2018-08-28 | 大连北方互感器集团有限公司 | A kind of current transformer with low pressure shielding |
| CN111161964A (en) * | 2019-12-31 | 2020-05-15 | 平高集团有限公司 | Static contact and high-voltage switch |
-
2015
- 2015-06-03 CN CN201520376501.XU patent/CN204680979U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461266A (en) * | 2018-03-15 | 2018-08-28 | 大连北方互感器集团有限公司 | A kind of current transformer with low pressure shielding |
| CN111161964A (en) * | 2019-12-31 | 2020-05-15 | 平高集团有限公司 | Static contact and high-voltage switch |
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |