CN202159576U - Built-in expander - Google Patents
Built-in expander Download PDFInfo
- Publication number
- CN202159576U CN202159576U CN2011202588185U CN201120258818U CN202159576U CN 202159576 U CN202159576 U CN 202159576U CN 2011202588185 U CN2011202588185 U CN 2011202588185U CN 201120258818 U CN201120258818 U CN 201120258818U CN 202159576 U CN202159576 U CN 202159576U
- Authority
- CN
- China
- Prior art keywords
- expander
- voltage divider
- built
- sheets
- out wire
- 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 - Lifetime
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Abstract
The utility model discloses a built-in expander, used in a capacitive voltage divider, and comprising several independently and parallelly arranged expander sheets, wherein the expander sheets are serially connected via a leading-out wire of a voltage divider core, the expander sheets are welded on the leading-out wire, and a gap is provided between two adjacent expander sheets. The built-in expander can correspondingly change the number of the expander sheets welded so as to adjust the length of the expander according to the size of the inner space and the lengths of a porcelain sleeve and the voltage divider core, thus meeting the demands of voltage divider sleeves having different lengths.
Description
Technical field
The utility model relates to a kind of protective device that is used for the voltage divider safe operation, especially relates to a kind of built-in expander.
Background technology
Voltage divider is the equipment of a kind of voltage of transformation commonly used in the electric power system; In order to guarantee the safe operation of voltage divider; Just injected a certain amount of insulating oil in the inside of voltage divider, insulating oil is also claimed oil for electrical appliances, comprises transformer oil, circuit-breaker oil, capacitor oil and cable wet goods; Be insulation as the electric equipment heat-conducting medium of holding concurrently, play the effect of insulation and cooling; But the inner insulating oil of voltage divider can change volume with variation of temperature, so, will cause the internal pressure of voltage divider to change, thereby influences the safe operation of voltage divider; In order to compensate the change in volume that insulating oil takes place because of variations in temperature, keep the voltage divider internal pressure constant basically, guarantee the safe operation of voltage divider, voltage divider generally all adopts built-in expander as the cubage compensation seal protecting device.
At present; Though the kind of the built-in expander that exists on the market is a lot; But structure size and shape that it is whole are all fixed, can not be according to the size of voltage divider volume inside, and the size of porcelain bushing and voltage divider fuse length; The length of flexible expander is to cooperate corresponding voltage divider.
The utility model content
To above-mentioned technical problem, the purpose of the utility model is to provide a kind of built-in expander, and it can adjust the length of expander flexibly according to the size of voltage divider inner space and the size of porcelain bushing and voltage divider fuse length.
The purpose of the utility model is to realize through following technical scheme:
A kind of built-in expander, it comprises the expander sheet that several independent parallel are provided with, said expander sheet is one through the connector serial connection.
Especially, said connector is the lead-out wire of voltage divider fuse, and said expander sheet is welded on the lead-out wire.
Especially, be provided with the gap between said adjacent two expander sheets.
The beneficial effect of the utility model does; Said built-in expander by several independently the expander sheet form; And weld together through the lead-out wire of voltage divider fuse, than traditional expander, it can be according to the size of voltage divider inner space and the size of porcelain bushing and voltage divider fuse length; The corresponding number that changes welding expander sheet is adjusted the length of expander, thereby adapts to the demand of the voltage divider sleeve pipe of different length.
Description of drawings
According to accompanying drawing and embodiment the utility model is done further explain below.
Fig. 1 is the structural representation of the built-in expander of the utility model.
Among the figure:
1, expander sheet; 2, gap; 3, voltage divider fuse lead-out wire.
Embodiment
Please with reference to shown in Figure 1, Fig. 1 is the structural representation of the built-in expander of the utility model.In present embodiment, said built-in expander comprises the expander sheet 1 that a plurality of independent parallel are provided with, and said expander sheet 1 is serially connected through being welded on the voltage divider fuse lead-out wire 3, is provided with gap 2 between said two adjacent expander sheets 1.
Above-mentioned built-in expander can be according to the size of voltage divider inner space and the size of porcelain bushing and voltage divider fuse length, and the corresponding number that changes welding expander sheet 1 is adjusted the length of expander, thereby adapts to the demand of the voltage divider sleeve pipe of different length.
Claims (3)
1. built-in expander is characterized in that: it comprises the expander sheet that several independent parallel are provided with, and said expander sheet is one through the connector serial connection.
2. built-in expander according to claim 1; It is characterized in that: said connector is the lead-out wire of voltage divider fuse, and said expander sheet is welded on the lead-out wire.
3. according to claim 1 or 2 each described built-in expanders; It is characterized in that: be provided with the gap between said adjacent two expander sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202588185U CN202159576U (en) | 2011-07-21 | 2011-07-21 | Built-in expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202588185U CN202159576U (en) | 2011-07-21 | 2011-07-21 | Built-in expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202159576U true CN202159576U (en) | 2012-03-07 |
Family
ID=45767202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202588185U Expired - Lifetime CN202159576U (en) | 2011-07-21 | 2011-07-21 | Built-in expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202159576U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102347130A (en) * | 2011-07-21 | 2012-02-08 | 无锡市锡容电力电器有限公司 | Built-in expander |
-
2011
- 2011-07-21 CN CN2011202588185U patent/CN202159576U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102347130A (en) * | 2011-07-21 | 2012-02-08 | 无锡市锡容电力电器有限公司 | Built-in expander |
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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: 20120307 |
|
| CX01 | Expiry of patent term |