CN202712038U - Ceramic vacuum switch tube - Google Patents
Ceramic vacuum switch tube Download PDFInfo
- Publication number
- CN202712038U CN202712038U CN 201220288130 CN201220288130U CN202712038U CN 202712038 U CN202712038 U CN 202712038U CN 201220288130 CN201220288130 CN 201220288130 CN 201220288130 U CN201220288130 U CN 201220288130U CN 202712038 U CN202712038 U CN 202712038U
- Authority
- CN
- China
- Prior art keywords
- vacuum switch
- switch tube
- ceramic
- voltage withstanding
- tube core
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a ceramic vacuum switch tube, which comprises a movable-end die, a static-end die and a ceramic shell sleeved on the periphery of the dies. The two ends of the ceramic shell are respectively and fixedly connected with the movable-end die and the static-end die through a movable-end cover and a static-end cover. The ceramic vacuum switch tube is characterized in that the periphery of the ceramic shell is provided with a silicon rubber layer with a corrugated surface. According to the technical scheme of the utility model, since the periphery of the ceramic shell is additionally provided with the silicon rubber layer with a corrugated surface, the creepage distance on the outer surface of the vacuum switch tube is increased by means of the corrugated silicon rubber sleeve. On the premise that the outer installation dimension of the vacuum switch tube is kept unchanged, the power frequency voltage withstanding level and the lightning impulse voltage withstanding level of the vacuum switch tube are effectively improved. Through being measured, the power frequency voltage withstanding level and the lightning impulse voltage withstanding level of the vacuum switch tube are 79 kV and 135 kV respectively and meet the national standard. Thus, the power frequency voltage withstanding and lightning impulse voltage withstanding problems of the ceramic vacuum switch tube under the above voltage classes are thoroughly solved. Meanwhile, the application range of the vacuum switch tube under higher voltage classes in the power transmission and transformation field is enlarged.
Description
[technical field]
The utility model belongs to a kind of ceramic vacuum switch pipe, relates in particular to the ceramic vacuum switch pipe that a kind of 24kV circuit breaker is used.
[technical background]
Existing common middle pressure vacuum switch tube, its structure be mainly by moved end tube core and quiet end tube core, and the elements such as ceramic package that are enclosed within their peripheries consist of, and ceramic package is distinguished affixed by the end cap that is located at its two ends with moved end tube core and quiet end tube core.Along with the progressively development of national 24kV electric power T ﹠ D Technology, so that medium voltage breaker increases increasingly with the demand of vacuum switch tube.But, because the reasons in structure of existing ceramic vacuum switch pipe, cause two indexs of its industrial frequency withstand voltage and lightning impulse withstand voltage level to require 65kV, 125kV that certain gap is still arranged from GB, practical measurement its industrial frequency withstand voltage level is the highest can only reach 55kV, the lightning impulse withstand voltage level can only reach 75kV, thereby has limited its applying in 24kV electric pressure power transmission and transformation field.
[summary of the invention]
For solving the problems of the technologies described above, the utility model aims to provide a kind of ceramic vacuum switch pipe, and this pipe has advantages of that industrial frequency withstand voltage, lightning impulse withstand voltage level are high, can satisfy the GB requirement of 24kV vacuum switch.
For solving the problems of the technologies described above, the utility model has adopted following technical scheme: the structure of this ceramic vacuum switch pipe, comprise moved end tube core and quiet end tube core, and the ceramic package that is set in their peripheries, the two ends of this ceramic package are through moved end lid, quiet end cap and moved end tube core and quiet end tube core difference seal welding, and it is characterized in that: the outer layer of surface that is arranged with at described ceramic package is undulatory silastic-layer.
During as preferred implementation, described silastic-layer and ceramic package are the casting combination.
During as preferred implementation, after extend at described silastic-layer two ends, Gu envelope is to the surface of described moved end lid, quiet end cap.
Beneficial effect: compared with prior art, the utility model is set up after layer of surface is undulatory silastic-layer in the ceramic package periphery, utilize undulatory silicone rubber sleeve, increased the outer surface creep distance of vacuum switch tube, guaranteeing under the constant prerequisite of the outside installation dimension of vacuum switch tube, make industrial frequency withstand voltage level and lightning impulse withstand voltage level obtain Effective Raise, they can reach respectively 79kV and 135kV after measured, meet the GB requirement, thereby thoroughly solved industrial frequency withstand voltage problem and the lightning impulse problem of withstand voltage of the vacuum switch tube under this electric pressure, enlarged vacuum switch tube in the range of application in voltage levels power transmission and transformation field more.
[description of drawings]
Fig. 1 be embodiment of the utility model partly cut open structural representation.
Among the figure: static conductive rod 1, conducting block 2, quiet end cap 3, silastic-layer 4, ceramic package 5, shielding cylinder 6, quiet end contact 7, moved end contact 8, bellows cover 9, bellows 10, moved end lid 11, fairlead 12, moving conductive rod 13.
[embodiment]
Referring to Fig. 1.The structure of the ceramic vacuum switch pipe of the present embodiment, comprise the position relatively and the moved end tube core on same axis and quiet end tube core, described moved end tube core is by moving conductive rod 13, and the moved end contact 8, bellows cover 9 and the bellows 10 that are located at successively on the moving conductive rod 13 consist of.Be installed with fairlead 12 in moved end lid 11, fairlead 12 is enclosed within on the moving conductive rod 13.Described quiet end tube core is by static conductive rod 1, and the quiet end contact 7 and the conducting block 2 that are located at successively on the static conductive rod 1 consist of.At moved end tube core and quiet end tube core outside sealing suit ceramic package 5, ceramic package 5 covers 11 seal weldings by quiet end cap 3, moved end that sealing is fixed in its two ends.Middle part in ceramic package 5 is fixedly welded with shielding cylinder 6, and shielding cylinder 6 is enclosed within quiet end contact 7 and moved end contact 8 outsides, is undulatory silastic-layer 4 in the peripheral mould surface of ceramic package 5.As preferably, when specifically making, preferably quiet end cap 3, the moved end at ceramic package 5 two ends are covered 11 and admittedly be enclosed in the silastic-layer 4, so more be conducive to increase the outer surface creep distance of vacuum switch tube.
Claims (3)
1. ceramic vacuum switch pipe, comprise moved end tube core and quiet end tube core, and the ceramic package (5) that is set in their peripheries, the two ends of this ceramic package (5) are through moved end lid (11), quiet end cap (3) and moved end tube core and quiet end tube core difference seal welding, and it is characterized in that: the outer layer of surface that is arranged with at described ceramic package (5) is undulatory silastic-layer (4).
2. ceramic vacuum switch pipe as claimed in claim 1 is characterized in that: described silastic-layer (4) is the casting combination with ceramic package (5).
3. ceramic vacuum switch pipe as claimed in claim 1 is characterized in that: after extend at described silastic-layer (4) two ends, Gu envelope is to the surface of described moved end lid (11), quiet end cap (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220288130 CN202712038U (en) | 2012-06-19 | 2012-06-19 | Ceramic vacuum switch tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220288130 CN202712038U (en) | 2012-06-19 | 2012-06-19 | Ceramic vacuum switch tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202712038U true CN202712038U (en) | 2013-01-30 |
Family
ID=47592316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220288130 Expired - Fee Related CN202712038U (en) | 2012-06-19 | 2012-06-19 | Ceramic vacuum switch tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202712038U (en) |
-
2012
- 2012-06-19 CN CN 201220288130 patent/CN202712038U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20130619 |