CN204204723U - The insulating cylinder of earthed switch in a kind of tri-station isolating switch - Google Patents
The insulating cylinder of earthed switch in a kind of tri-station isolating switch Download PDFInfo
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- CN204204723U CN204204723U CN201420647883.0U CN201420647883U CN204204723U CN 204204723 U CN204204723 U CN 204204723U CN 201420647883 U CN201420647883 U CN 201420647883U CN 204204723 U CN204204723 U CN 204204723U
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- insulating cylinder
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- station isolating
- isolating switch
- cylindrical shell
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Abstract
The utility model discloses the insulating cylinder of earthed switch in a kind of tri-station isolating switch, this insulating cylinder comprises a cylindrical shell, and cylindrical shell is by the cylindrical shell of the hollow of epoxy resin once-cast, and its two ends are embedded with uniform electric field component respectively.The scheme that the utility model provides effectively can solve the problem that partial discharge and flashover easily appear in ground connection fracture insulating cylinder, add the reliability of Cubicle Gas-Insulated Switchgear, improve product export test percent of pass, reduce product rework rate, improve production efficiency, decrease after services of product cost.
Description
Technical field
The utility model relates to Cubicle Gas-Insulated Switchgear technology, is specifically related to the tri-station isolating switch on Cubicle Gas-Insulated Switchgear.
Background technology
Tri-station isolating switch is that one incorporates isolating switch and earthed switch function, and the functional unit of practical function is carried out by three-station, its main feature is the service position of switch is unique, not at closing position, be exactly at isolated location or earthing position, so just can realize mechanical latching, prevent the charged conjunction earthed switch of major loop.Tri-station isolating switch is usually used in Cubicle Gas-Insulated Switchgear.
But along with continuous progress and the development of Cubicle Gas-Insulated Switchgear, the raising of electric pressure and current class, the increase of main bus bar volume further reduces the space of sealing switch equipment, the check requirements of the insulation property of tri-station isolating switch isolation fracture and ground connection fracture is also corresponding more strict, and particularly partial discharge and flashover problem easily occur ground connection fracture.
Therefore, develop a kind of novel grounded fracture insulating cylinder, problem partial discharge and flashover easily occurring to solve ground connection fracture insulating cylinder is this area problem in urgent need to solve.
Utility model content
For existing Cubicle Gas-Insulated Switchgear voltage levels product in its delivery test, easily there is partial discharge, flashover and cause Cubicle Gas-Insulated Switchgear to unpack to change the problem of doing over again of insulating cylinder in tri-station isolating switch ground connection fracture insulating cylinder, the object of the present invention is to provide a kind of Novel insulating cylinder of tri-station isolating switch, to solve the problem of prior art.
In order to achieve the above object, the utility model adopts following technical scheme:
An insulating cylinder for earthed switch in tri-station isolating switch, described insulating cylinder comprises a cylindrical shell, and described cylindrical shell is by the tube structure of the hollow of epoxy resin once-cast, and its two ends are embedded with uniform electric field component respectively.
In the preferred version of this insulating cylinder, the epoxy resin cylindrical shell of described inner hollow is the cone structure on top.
Further, described uniform electric field component is the nut of annular brass material.
The scheme that the utility model provides effectively can solve the problem that partial discharge and flashover easily appear in ground connection fracture insulating cylinder, add the reliability of Cubicle Gas-Insulated Switchgear, improve product export test percent of pass, reduce product rework rate, improve production efficiency, decrease after services of product cost.
Accompanying drawing explanation
The utility model is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is axial cross-sectional views of the present utility model;
Fig. 2 is radial section schematic diagram of the present utility model;
Fig. 3 is the assembling schematic diagram of the utility model at tri-station isolating switch.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
For the problem existing for existing ground connection fracture insulating cylinder, this example provides a kind of novel insulating cylinder to carry out alternative existing product, and concrete operations are as follows:
By the electric field of computational analysis in closed air chamber near tri-station isolating switch ground connection fracture, analyze the reason that partial discharge and flashover appear in former insulating cylinder.
Accordingly, the epoxy resin that this example employing insulation property are best is as the material of new insulating cylinder.
See Fig. 1 and Fig. 2, it is depicted as the structural representation of the Novel insulating cylinder of the tri-station isolating switch that this example provides.
As seen from the figure, whole Novel insulating cylinder 100 mainly comprises earth terminal nut inserts 101, epoxy resin body 102 and contact end nut inserts 103.
Wherein, epoxy resin body 102 is specially by the conical structure going to push up of the inner hollow of epoxy resin once-cast.
Through hole about 104 internal diameter in epoxy resin body 102 is identical, circular in cross-section.
The end face of this epoxy resin body 102 small end is embedded with earth terminal nut inserts 101, this earth terminal nut inserts 101 is arranged with the through hole 104 in epoxy resin body 102 is concentric.
The end face that epoxy resin body 102 is held greatly is embedded with contact end nut inserts 103, and this contact end nut inserts 103 is arranged with the through hole 104 in epoxy resin body 102 is concentric.
For earth terminal nut inserts 101 and contact end nut inserts 103, the nut of two pieces annular brass material is adopted in this example, two nuts play the effect of uniform electric field in insulating cylinder inside, in tri-station isolating switch, play the effect being connected insulating cylinder and ground connection fracture two ends, the epoxy resin body of ground connection fracture plays the effect of uniform electric field.
For the Novel insulating cylinder of above-mentioned tri-station isolating switch, when specifically being formed, the nut of two pieces annular brass material is placed on insulating cylinder two ends, the cylinder of ring-type with certain taper is together poured into epoxy resin, two nuts play the effect being connected tri-station isolating switch ground connection fracture two ends, and epoxy resin body plays the effect to High-Voltage Insulation shielding.
See Fig. 3, its Novel insulating cylinder being depicted as the tri-station isolating switch formed according to such scheme is illustrated at the rigging position of tri-station isolating switch.
Wherein, one end that Novel insulating cylinder 2 embedded nut shape is little is connected with ground contact seat 1, one end that embedded nut shape is large is connected with contact pipe 4, one end of moving contact 5 is connected with contact pipe 4, the other end is connected with static contact seat 6, and interlock screw mandrel 3 is located in ground contact seat 1, Novel insulating cylinder 2, contact pipe 4 and moving contact 5.
The insulating cylinder major part being exposed to ground connection incision position after connection is epoxy resin body.By finding being arranged on the contrast test that identical tri-station isolating switch carries out under the same terms with the insulating cylinder of original material, the Novel insulating cylinder tri-station isolating switch ground connection fracture insulation property performance when Cubicle Gas-Insulated Switchgear electric pressure reaches 40.5kV taking epoxy resin as material is excellent, and partial discharge and flashover do not occur.
In sum, the Novel insulating cylinder of a kind of tri-station isolating switch that the utility model provides, by improving insulating cylinder body, effectively increase the insulating capacity of tri-station isolating switch ground connection fracture, the evenly electric field of ground connection incision position, entirety improves the insulating capacity of tri-station isolating switch and the reliability of switchgear, too increases the percent of pass of switchgear when delivery test simultaneously, improves the production efficiency of product.
More than show and describe general principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. the insulating cylinder of earthed switch in tri-station isolating switch, described insulating cylinder comprises a cylindrical shell, it is characterized in that, described cylindrical shell is by the cylindrical shell of the hollow of epoxy resin once-cast, and its two ends are embedded with uniform electric field component respectively.
2. the insulating cylinder of earthed switch in a kind of tri-station isolating switch according to claim 1, is characterized in that, the epoxy resin cylindrical shell of described inner hollow is the cone structure on top.
3. the insulating cylinder of earthed switch in a kind of tri-station isolating switch according to claim 1, it is characterized in that, described uniform electric field component is the nut of annular brass material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420647883.0U CN204204723U (en) | 2014-10-31 | 2014-10-31 | The insulating cylinder of earthed switch in a kind of tri-station isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420647883.0U CN204204723U (en) | 2014-10-31 | 2014-10-31 | The insulating cylinder of earthed switch in a kind of tri-station isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204204723U true CN204204723U (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420647883.0U Active CN204204723U (en) | 2014-10-31 | 2014-10-31 | The insulating cylinder of earthed switch in a kind of tri-station isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204204723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107240519A (en) * | 2017-08-01 | 2017-10-10 | 青岛特锐德电气股份有限公司 | A kind of tri-station isolating switch |
-
2014
- 2014-10-31 CN CN201420647883.0U patent/CN204204723U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107240519A (en) * | 2017-08-01 | 2017-10-10 | 青岛特锐德电气股份有限公司 | A kind of tri-station isolating switch |
| CN107240519B (en) * | 2017-08-01 | 2019-05-21 | 青岛特锐德电气股份有限公司 | A kind of tri-station isolating switch |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |