CN103226156B - Shield ball - Google Patents
Shield ball Download PDFInfo
- Publication number
- CN103226156B CN103226156B CN201310101732.5A CN201310101732A CN103226156B CN 103226156 B CN103226156 B CN 103226156B CN 201310101732 A CN201310101732 A CN 201310101732A CN 103226156 B CN103226156 B CN 103226156B
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- CN
- China
- Prior art keywords
- hole
- shielding ball
- ball body
- shielding
- shield ball
- 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.)
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Links
- 230000007704 transition Effects 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract 1
- 239000012212 insulator Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
Abstract
The invention relates to a shield ball, which comprises a shield ball body shaped like a gyrating column, wherein a stepped mounting hole is formed in the axis of the shield ball body in an extending manner in the axis direction; a sinking hole for sinking and fixing the head of a fastener of the shield ball is formed in a large hole neck section of the mounting hole. A hole surface at the opening end of the sinking hole and a side surface of the shield ball body are connected onto a longitudinal cross-section of the shield ball body through a transition cambered surface tangential to the two surfaces; an end surface, away from the sinking hole, of the shield ball body, is a mounting surface for being connected with a to-be-shielded workpiece in a matching way. When the shield ball provided by the invention is used in an insulation test of a 126 kV GIS (Gas Insulated Switchgear) three-phase common box type current transformer, the shield ball can be fixed and assembled on a central conductor only by using a fastener, the operation of the mounting process is very simple and convenient when compared with the operation of the conventional manner that a connecting cylinder and a sleeve are adopted for shielding.
Description
Technical field
The present invention relates to high-voltage mutual inductor technical field, particularly a kind of that can use in the Insulation Test of three-phase combined type type current transformer, that its insulator center conductor is shielded shielding ball.
Background technology
The CT unit two ends of 126kV GIS three-phase combined type type current transformer are insulators, when carrying out Insulation Test, need to shield the center conductor of insulator, shielding at insulator two ends docking connecting cylinder and sleeve pipe realization of current employing, this shielding mode assembly manipulation in the test of reality is very inconvenient, install consuming time more, and cost is higher.
Summary of the invention
The object of this invention is to provide a kind of shielding ball that can shield insulator center conductor in the Insulation Test of three-phase combined type type current transformer, this shielding ball is installed simple to operate in use.
For achieving the above object, the present invention adopts following technical scheme: shielding ball, comprise the shielding ball body in revolution bar shape, the axis of shielding ball body offers stepped appearance along Axis Extension through hole is installed, the large aperture section of installing through hole is the counterbore of the fastener head for sinking to fixed mask ball, on the longitudinal cross-section of shielding ball body, the face, hole of counterbore openend is connected by the transition cambered surface tangent with this two sides with the side of shielding ball body; The end face away from described counterbore of shielding ball body is the installed surface for being connected with work pieces mate to be shielded.
Described transition cambered surface is connected by three sections of circular arcs that rounding off connects successively and forms.
Described installed surface is plane.
The step of described installation through hole is positioned at the position near shielding ball body installed surface, and in the assembling using state of shielding ball, the point of contact in described transition cambered surface and face, counterbore hole is higher than the end face for sinking to the fastener head installing through hole fixed mask ball.
Installed surface and the intersection, side of described shielding ball body are rounded feature.
When shielding ball of the present invention is applied in the Insulation Test of 126kV GIS three-phase combined type type current transformer, as long as shielding ball fixedly can be assembled on center conductor with a securing member, installation process is compared in operation very simple and convenient with existing employing connecting cylinder with the mode of liner shields.The invention solves insulator shielding problem, every Insulation Test requirement under meeting this electric pressure.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is a kind of using state figure of the ball of shielding shown in Fig. 1.
Embodiment
It is a kind of embodiment that the present invention shields ball shown in Fig. 1, Fig. 2, it comprises the shielding ball body 1 in revolution bar shape, the axis of shielding ball body offers stepped appearance along Axis Extension through hole is installed, the large aperture section of installing through hole is the counterbore 3 of the fastener head for sinking to fixed mask ball, on the longitudinal cross-section of shielding ball body, the face, hole of counterbore openend is connected by the transition cambered surface 4 tangent with this two sides with the side of shielding ball body; The end face away from described counterbore of shielding ball body is the installed surface 2 for being connected with work pieces mate to be shielded, and this installed surface 2 is plane, and the installed surface 2 of shielding ball body is rounded feature with the intersection area of shielding ball body side.
In the present embodiment, three sections of circular arcs ab, bc and cd that described transition cambered surface 4 is connected by rounding off successively connect and form, and can meet the shielding demand to insulator center conductor under certain air pressure after the size coupling of three sections of circular arcs.Certainly, in the specific implementation, two sections of round and smooth connections of circular arc are adopted also can.
The assembly state diagram of the present embodiment in the Insulation Test of 126kV GIS three-phase combined type type current transformer shown in Fig. 3, insulator portion is illustrate only in figure, insulator 6 rack-mount 5, shielding ball 8 is fixedly connected on by screw 9 on the end face of center conductor 7, step due to the installation through hole of this shielding ball is positioned on the position of shielding ball body installed surface, so the point of contact in its transition cambered surface and face, counterbore hole is far above the end face sinking to the fastener head installing through hole fixed mask ball, there is higher security and shield effectiveness.
The present invention shields in other embodiments of ball, the installed surface 2 of shielding ball body makes corresponding change with the difference of the installed surface structure of workpiece to be shielded, coordinates as long as ensure that shielding ball can coincide with work pieces mate face to be shielded, is then linked together by securing member.
Claims (6)
1. shield ball, it is characterized in that: comprise the shielding ball body in revolution bar shape, the axis of shielding ball body offers stepped appearance along Axis Extension through hole is installed, the large aperture section of installing through hole is the counterbore of the fastener head for sinking to fixed mask ball, on the longitudinal cross-section of shielding ball body, the face, hole of counterbore openend is connected by the transition cambered surface tangent with this two sides with the side of shielding ball body; The end face away from described counterbore of shielding ball body is the installed surface for being connected with work pieces mate to be shielded.
2. shielding ball according to claim 1, is characterized in that: described transition cambered surface is connected by three cambered surfaces that rounding off connects successively and forms.
3. shielding ball according to claim 1 and 2, is characterized in that: described installed surface is plane.
4. shielding ball according to claim 1 and 2, it is characterized in that: the step of described installation through hole is positioned at the position near shielding ball body installed surface, in the assembling using state of shielding ball, the point of contact in described transition cambered surface and face, counterbore hole is higher than the end face for sinking to the fastener head installing through hole fixed mask ball.
5. shielding ball according to claim 4, is characterized in that: described installed surface is plane.
6. shielding ball according to claim 5, is characterized in that: installed surface and the intersection, side of described shielding ball body are rounded feature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310101732.5A CN103226156B (en) | 2013-03-27 | 2013-03-27 | Shield ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310101732.5A CN103226156B (en) | 2013-03-27 | 2013-03-27 | Shield ball |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103226156A CN103226156A (en) | 2013-07-31 |
| CN103226156B true CN103226156B (en) | 2015-06-03 |
Family
ID=48836676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310101732.5A Active CN103226156B (en) | 2013-03-27 | 2013-03-27 | Shield ball |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103226156B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110047692B (en) * | 2019-04-11 | 2021-08-06 | 平高集团有限公司 | Three-phase common-box arranged electric switch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201917595U (en) * | 2010-12-29 | 2011-08-03 | 上海市电力公司 | Insulation shield cover for cross-core high-voltage electrode of current |
| CN202676755U (en) * | 2012-08-02 | 2013-01-16 | 广西电网公司电力科学研究院 | Fixed type mask tape |
| CN102881508A (en) * | 2012-09-07 | 2013-01-16 | 北海银河开关设备有限公司 | Solid insulating pole |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5461260B2 (en) * | 2010-03-19 | 2014-04-02 | 株式会社日立製作所 | Insulated spacer with built-in optical fiber |
-
2013
- 2013-03-27 CN CN201310101732.5A patent/CN103226156B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201917595U (en) * | 2010-12-29 | 2011-08-03 | 上海市电力公司 | Insulation shield cover for cross-core high-voltage electrode of current |
| CN202676755U (en) * | 2012-08-02 | 2013-01-16 | 广西电网公司电力科学研究院 | Fixed type mask tape |
| CN102881508A (en) * | 2012-09-07 | 2013-01-16 | 北海银河开关设备有限公司 | Solid insulating pole |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103226156A (en) | 2013-07-31 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |