CN202758773U - Insulating cover configuration structure - Google Patents
Insulating cover configuration structure Download PDFInfo
- Publication number
- CN202758773U CN202758773U CN 201220251038 CN201220251038U CN202758773U CN 202758773 U CN202758773 U CN 202758773U CN 201220251038 CN201220251038 CN 201220251038 CN 201220251038 U CN201220251038 U CN 201220251038U CN 202758773 U CN202758773 U CN 202758773U
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- China
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- insulating cover
- configuration structure
- high voltage
- voltage switchgear
- cover configuration
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Abstract
The utility model provides an insulating cover configuration structure which can overcome the defects of the clapboard-type composite insulation in the prior art. The technical scheme is that the insulating cover configuration structure used for a high-voltage switch device includes voltage-sharing covers which surround conductor joints, and insulating covers which surround the voltage-sharing covers. The insulating cover configuration structure has the following advantages: the opening visualization of the IEC62271-200 is satisfied; the assembly is simple, is easy to carry out, and dose not influence the installation and usage of other parts; the inner electric field in the structure is even, so the device insulating ability is improved; the structure occupies a small space, so the maintenance of other parts becomes convenient; the structure is simple, the manufacturing cost is low, and the scale production is facilitated.
Description
Technical field
The utility model relates to the high voltage switchgear field, relates to especially the insulating cover that uses in the high voltage switchgear field.
Background technology
In high voltage switchgear, between the high-pressure conductor and high-pressure conductor over the ground between requirement enough air gaps will be arranged, for example 10kV requires the air gap greater than 125mm, 24kV requires the air gap greater than 200mm.Simultaneously, high-tension apparatus also need possess enough dielectric voltage withstand levels, and for isolated neutral system, the 10kV equipment requirement reaches power frequency withstand 42kV, lightning impulse 75kV, and the 24kV equipment requirement reaches power frequency withstand 65kV, lightning impulse 125kV.For compact-type high-pressure equipment, insulation distance should be satisfied and suitable withstand voltage level can be born again, along with the development of insulating part, insulating material, compound inslation becomes one of means that address this problem.Composite insulation structure reasonable in design can dwindle the air insulation distance by improving conductor electric field on every side, strengthens the high voltage equipment insulation ability.
Compound inslation commonly used adopts the iris type insulation usually, namely alternate or relatively between directly insert an insulation board, the iris type compound inslation can play the purpose that improves insulating capacity, but have the following disadvantages: the installation and maintenance of insulation board is difficulty, and the controller switching equipment limited space of miniaturization, it is larger on the operating space impact of equipment to insert insulation board, is unfavorable for operation; Also can stop user's sight line behind the insertion insulation board, can check that the fracture of the connection of earthing and conductor is blocked, not meet IEC62271-200 and GB3906-2006 to the visual requirement of fracture, conductor is generally cable; The shape of dividing plate is unfavorable for anti-aging, is difficult to reach non-maintaining requirement in 30 years; The shape of dividing plate is unfavorable for partial discharge, and partial discharge can become more abominable in aging situation; After the switch cubicle of close-coupled is loaded onto dividing plate, be unfavorable for other electric component of installation and maintenance.
The utility model content
Therefore the utility model proposes a kind of insulating cover configuration structure, and it can overcome above-mentioned shortcoming, improves conductor electric field on every side, strengthen the high voltage equipment insulation ability, and assembling is simple, low cost of manufacture.
The technical scheme of insulating cover configuration structure of the present utility model is, a kind of insulating cover configuration structure for high voltage switchgear comprises grading shield, and grading shield wherein, also comprises insulating cover around the conductor tab setting, and insulating cover is around the grading shield setting.
In existing high voltage switchgear, all use grading shield with electric field strength around the even conductor.Arrange again around the outside of grading shield insulating cover can be further even electric field strength around the conductor, and improve apparatus insulated ability.
Further, insulating cover is the open semi-enclosed cover body in top and front side, and the bottom of insulating cover is provided with viewable portion.
In Insulation Test, do not add the equipment of insulating cover at 24kV, flashover and electric discharge phenomena under the experiment condition of lightning impulse 125kV, 1.2/50 μ s, occur in power frequency 65kV/min.After increasing insulating cover, protected part can tolerate 24kV, power frequency 65 * 1.1kV/min, and lightning impulse 125 * 1.1kV, 1.2/50 μ s, and flashover and electric discharge phenomena do not occur.
The material of insulating cover is selected customary insulation material PA66 usually, increases alternatively glass 30%, increases fire retardant.
Further, described conductor is cable.
Insulating cover is taked around the mode of grading shield setting, and it is little to take volume, does not affect other electric component of installation and maintenance in switchgear.
Further, cover body is generally cylindrical body shape, the top of cover body is fully open, the bottom rear side is provided with large installing hole, bottom corresponding to the part side of front side and this part side by from the top to the bottom cutting and separating, be provided with for the boss of installing in bottom centre, the boss center is provided with little installing hole, and viewable portion is for being provided with interval towards the outside wide-open openwork part of this cylinder with large installing hole on this cover body right side.
The large installing hole of insulating cover is for insulating cover inside that grading shield is packed into, and little installing hole is used for so that the securing members such as screw, bolt pass through, and grading shield is fixed on insulating cover inside.
Be provided with interval towards the outside wide-open openwork part of cylinder with large installing hole on the insulating cover right side and be used for so that the user can check by this openwork part the fracture of the connection of earthing and conductor, namely meet the IEC62271-200 requirement visual to fracture.
For so that not be not electrically connected by insulating cover with the front part side of insulating cover and corresponding bottom cutting and separating with hindering.
Further, high voltage switchgear is the three-phase high-voltage switchgear.
Further, insulating cover is arranged on the phase place of both sides.
Further, on the phase place in the middle of insulating cover is arranged on.
Further, insulating cover is arranged on three phase places.
The utility model provides the set-up mode of multiple insulating cover, and it has satisfied under different condition, the demand of high voltage switchgear insulation.
Insulating cover in the insulating cover configuration structure of the present utility model is simple in structure, is easy to make, and cost is low.
Insulating cover configuration structure of the present utility model has the following advantages: meet the IEC62271-200 requirement visual to fracture; Assemble simplely, do not affect that miscellaneous part is installed and use; Thereby this inside configuration electric field evenly improves apparatus insulated ability; Little other element that maintains easily of volume thereby this structure takes up room; And simple in structure, low cost of manufacture is convenient to large-scale production.
Description of drawings
Other advantage of the present utility model and feature will only become more obviously clear with the explanation that provide and expression specific embodiment of the present utility model in the accompanying drawings of the purpose of non-limiting example from ensuing, in the accompanying drawings:
Fig. 1 is the schematic diagram of insulating cover configuration structure of the present utility model;
Fig. 2 is the structural representation of the insulating cover of insulating cover configuration structure of the present utility model;
Fig. 3 is another schematic diagram of insulating cover configuration structure of the present utility model.
Description of reference numerals
1 insulating cover
2 grading shields
3 large installing holes
4 little installing holes
5 boss
6 openwork parts
The 7A phase
The 8B phase
The 9C phase
Embodiment
Further describe the feature of insulating cover configuration structure of the present utility model below with reference to Fig. 1 to Fig. 3.For clear succinct purpose, parts identical with similar in different embodiment use identical Reference numeral.
As shown in Figure 1, be used for the insulating cover configuration structure of high voltage switchgear, comprise grading shield 2, grading shield 2 also is provided with insulating cover 1 around the conductor tab setting in the outside of grading shield 2.Usually the conductor that uses in high voltage switchgear is cable.
In existing high voltage switchgear, for electric field strength around the even conductor, can be at the outside grading shield 2 that uses of conductor.Around grading shield 2, arrange insulating cover 1 can be further even electric field strength around the conductor, and improve apparatus insulated ability.
In Insulation Test, the equipment that does not add insulating cover 1 is being 24kV, power frequency 65kV/min, and flashover and electric discharge phenomena occur in lightning impulse 125kV, 1.2/50 μ s.After increasing insulating cover 1, protected part can tolerate 24kV, power frequency 65 * 1.1kV/min, and lightning impulse 125 * 1.1kV, 1.2/50 μ s, and flashover and electric discharge phenomena do not occur.
The material of insulating cover 1 is selected customary insulation material PA66 usually, also selectively increases glass 30% and/or fire retardant.
Insulating cover is taked around the mode of grading shield setting, and it is little to take volume, does not affect other electric component of installation and maintenance in switchgear.
As shown in Figure 2, insulating cover 1 is generally cylindrical body shape, the top of insulating cover 1 is fully open, the bottom rear side is provided with large installing hole 3 for insulating cover inside that grading shield 2 is packed into, bottom corresponding to the part side of the front side of insulating cover 1 and this part side opened to the bottom cutting and separating from the top, is provided with for the boss 5 of installing in bottom centre, and boss 5 centers are provided with little installing hole 4, be used for so that the securing members such as screw, bolt pass through, and grading shield is fixed on insulating cover inside.Be provided with interval towards insulating cover 1 outside wide-open openwork part 6 with large installing hole 3 on insulating cover 1 right side, be used for so that the user can check the fracture of the connection of earthing and conductor by this openwork part 6, namely meet the IEC62271-200 requirement visual to fracture.
Part side and the bottom corresponding to this part side of the front side of insulating cover 1 are opened to the bottom cutting and separating from the top, are to flow out opening so that not be electrically connected by insulating cover for the sidewall at insulating cover 1 with hindering.
And for example shown in Figure 1, high voltage switchgear is the three-phase high-voltage switchgear, and three-phase is A mutually 7, B mutually 8 with C mutually 9.
Phase place in the middle of insulating cover is arranged in Fig. 1, namely B goes up mutually.
As shown in Figure 3, insulating cover can also be arranged on three phase places, and namely A phase, B phase go up mutually with C.
Insulating cover also can be arranged on the phase place of both sides, and namely the A phase goes up (not shown) mutually with C.
The utility model provides the set-up mode of multiple insulating cover, and it has satisfied under different condition, the demand of high voltage switchgear insulation.Simultaneously, the insulating cover in the insulating cover configuration structure of the present utility model is simple in structure, is easy to make, and cost is low.
Insulating cover configuration structure of the present utility model has the following advantages: meet the IEC62271-200 requirement visual to fracture; Assemble simplely, do not affect that miscellaneous part is installed and use; Thereby this inside configuration electric field evenly improves apparatus insulated ability; Little other element that maintains easily of volume thereby this structure takes up room; And simple in structure, low cost of manufacture is convenient to large-scale production.
More than the utility model is described in detail; for one of ordinary skill in the art; thought according to the utility model embodiment; change in specific embodiments and applications should not thought the scope that has departed from the utility model protection; in sum, this description should not be construed as restriction of the present utility model.
Claims (8)
1. an insulating cover configuration structure that is used for high voltage switchgear comprises grading shield (2), and described grading shield (2) is characterized in that around the conductor tab setting: also comprise insulating cover (1), described insulating cover (1) arranges around described grading shield (2).
2. the insulating cover configuration structure for high voltage switchgear according to claim 1 is characterized in that: described insulating cover (1) is the open semi-enclosed cover body in top and front side, and the bottom of described insulating cover (1) is provided with viewable portion.
3. the insulating cover configuration structure for high voltage switchgear according to claim 1, it is characterized in that: described conductor is cable.
4. the insulating cover configuration structure for high voltage switchgear according to claim 2, it is characterized in that: described cover body is cylindrical, the top of described cover body is fully open, the bottom rear side of described cover body is provided with large installing hole (3), bottom corresponding to the part side of the front side of described cover body and this part side by from the top to the bottom cutting and separating, bottom centre at described cover body is provided with for the boss (5) of installing, described boss (5) center is provided with little installing hole (4), described viewable portion be described cover body right side and described large installing hole (3) arrange with interval towards the outside wide-open openwork part (6) of described cover body.
5. each described insulating cover configuration structure for high voltage switchgear in 4 according to claim 1, it is characterized in that: described high voltage switchgear is the three-phase high-voltage switchgear.
6. the insulating cover configuration structure for high voltage switchgear according to claim 5, it is characterized in that: described insulating cover (1) is arranged on the phase place of both sides.
7. the insulating cover configuration structure for high voltage switchgear according to claim 5 is characterized in that: on the phase place in the middle of described insulating cover (1) is arranged on.
8. the insulating cover configuration structure for high voltage switchgear according to claim 5, it is characterized in that: described insulating cover (1) is arranged on three phase places.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220251038 CN202758773U (en) | 2012-05-30 | 2012-05-30 | Insulating cover configuration structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220251038 CN202758773U (en) | 2012-05-30 | 2012-05-30 | Insulating cover configuration structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202758773U true CN202758773U (en) | 2013-02-27 |
Family
ID=47737941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220251038 Expired - Lifetime CN202758773U (en) | 2012-05-30 | 2012-05-30 | Insulating cover configuration structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202758773U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114121541A (en) * | 2020-08-28 | 2022-03-01 | 西门子股份公司 | Gas-insulated medium-or high-voltage switchgear assembly having a blade contact carrier |
-
2012
- 2012-05-30 CN CN 201220251038 patent/CN202758773U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114121541A (en) * | 2020-08-28 | 2022-03-01 | 西门子股份公司 | Gas-insulated medium-or high-voltage switchgear assembly having a blade contact carrier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |
|
| CX01 | Expiry of patent term |