CN201017812Y - SF6 direct-action pneumatic type switch - Google Patents
SF6 direct-action pneumatic type switch Download PDFInfo
- Publication number
- CN201017812Y CN201017812Y CNU2006201597928U CN200620159792U CN201017812Y CN 201017812 Y CN201017812 Y CN 201017812Y CN U2006201597928 U CNU2006201597928 U CN U2006201597928U CN 200620159792 U CN200620159792 U CN 200620159792U CN 201017812 Y CN201017812 Y CN 201017812Y
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- Prior art keywords
- load switch
- piston cylinder
- main conducting
- arc
- piston tube
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Abstract
A direct driving compressed air type load switch. The utility model comprises a main conducting static contact (10), a moving contact (8) and a piston tube main conducting rod (7), and SF6 gas filled between the piston tube and the compressed air piston of the piston tube main conducting rod (7); an arc striking static contact is arranged at the center of the main conducting static contact (10), a spraying opening (14) is arranged at the upper end of the piston tube main conducting rod (7), and an arc burning spraying opening (8) is arranged inside the spraying opening (14); a compressed air piston (5) is arranged inside the piston tube main conducting rod (7). The arc extinction ability of the load switch is strong, and the transfer current quantity is greatly enhanced.
Description
Technical field
The utility model relates to a kind of straight moving pressure-operated load switch, specifically, relates to a kind of SF6 gas-insulated common box type ring main unit with directly moving pressure-operated load switch.
Background technology
All adopt the guillotine type arc quenching principle in the like product of world today's esbablished corporation, this on-load switch adopts be arc extinguishing the most original on the switch history away from, draw back disconnecting link during the switch separating brake at a high speed, the electric arc that causes is by arc-chute refrigerated separation arc extinguishing, but because the restriction of arc quenching principle, the arc extinguishing of this on-load switch is limited in one's ability.
The purpose of this utility model provides the strong Direct Action Type on-load switch of a kind of arc extinguishing ability;
SF6 gas was from the on-load switch of narrow and small throat spout with high speed ejection arc extinguishing when another purpose of the present utility model provided a kind of separating brake.
Summary of the invention
To achieve these goals, the spy provides following technical scheme:
A kind of straight moving pressure-operated load switch, it comprises the leading electric pole 7 of leading electric fixed contact 10, moving contact 8 and piston cylinder, it is characterized in that being full of SF6 gas between piston cylinder in the leading electric pole 7 of piston cylinder and displacer;
Center at leading electric fixed contact 10 is provided with striking fixed contact 9;
Be provided with spout 14 in leading electric pole 7 upper ends of piston cylinder, the inside of spout 14 is provided with arcing nozzle 8;
The inside of the leading electric pole 7 of piston cylinder is provided with displacer 5;
The leading electric pole 7 of piston cylinder is connected on the drive link 11.
Because this technical scheme has adopted the Direct Action Type arc extinguishing structure of calming the anger, the arc extinguishing ability is strong; Improved the magnitude of transfer current greatly; Drive link drives down rectilinear motion of piston cylinder at a high speed during separating brake, is compressed in the SF6 gas ejection between compression piston tube and displacer simultaneously, with powerful air-flow with arc blow out.
Description of drawings
Figure 1 shows that the profile of guillotine type on-load switch in the prior art;
Figure 2 shows that the profile that is in Direct Action Type on-load switch in the "on" position;
Figure 3 shows that the profile that is in Direct Action Type on-load switch in the gate-dividing state.
Embodiment
Describe the present invention in detail below in conjunction with accompanying drawing:
It shown in Fig. 1 the profile of the on-load switch produced of famous external certain electric manufacturer.The similar of domestic and international other company's products, what such on-load switch adopted is arc quenching principle-guillotine type arc quenching principle the most original on the switch history, mainly be in shell 3, to have the plug-in strip 1 that drives by driving mechanism 4, when the switch separating brake, driving mechanism 4 drives plug-in strip 1 motion by connecting rod, to break away from contact at a high speed, this moment, caused electric arc was by arc-chute 2 refrigerated separation arc extinguishings.
Because the restriction of arc quenching principle, the arc extinguishing of this guillotine type on-load switch is limited in one's ability.
It shown in Fig. 2 the straight moving pressure-operated load switch that is in "on" position, the leading electric pole 7 of piston cylinder moves upward under the effect of drive link 11, so that be inserted in the circular leading electric fixed contact 10, be provided with striking fixed contact 9 at the center of leading electric fixed contact 10.The front end of the leading electric pole 7 of piston cylinder is provided with spout 14 (see figure 3)s, and under the state that closes a floodgate, 9 of striking fixed contacts are inserted in the spout 14.Inside at spout 14 also is being provided with arcing nozzle 8 (fixed contact), fills SF6 gas in the inside of the leading electric pole 7 of piston cylinder (motion), and SF6 gas has been full of between piston cylinder and the displacer 5.
Fig. 3 then shows the cutaway view of the Direct Action Type on-load switch that is in gate-dividing state, in separating brake, drive link 11 drives down rectilinear motion of piston cylinder 7 at a high speed, the spout 14 of SF6 gas between this moment compression piston tube and the displacer 5 from having narrow and small throat, with high speed ejection, with its powerful air-flow with arc blow out, because arc quenching principle uniqueness, therefore its technical indicator is far above the product of other manufacturers, looks into its transfer current of similar products at home and abroad technical parameter and is 1700A; The transfer current of this product then is more than the 2200A.
Above-listed detailed description is specifying at a kind of feasible enforcement example of the present invention, this enforcement example is not in order to limit claim of the present invention, allly do not break away from equivalent embodiment or the change that skill spirit of the present invention is done, for example, equivalence embodiment Deng changing all should be contained in the claim of this case.
Claims (5)
1. one kind is directly moved pressure-operated load switch, and it comprises the leading electric pole (7) of leading electric fixed contact (10), moving contact (8) and piston cylinder, it is characterized in that: be full of SF6 gas between piston cylinder in the leading electric pole (7) of piston cylinder and displacer.
2. according to the straight moving pressure-operated load switch described in the claim 1, it is characterized in that: the center at leading electric fixed contact (10) is provided with striking fixed contact (9).
3. according to the straight moving pressure-operated load switch described in the claim 1, it is characterized in that: the upper end at the leading electric pole (7) of piston cylinder is provided with spout (14), and the inside of described spout (14) is provided with arcing nozzle (8).
4. according to the straight moving pressure-operated load switch described in the claim 1, it is characterized in that: the inside that piston cylinder is dominated electric pole (7) is provided with displacer (5).
5. according to the straight moving pressure-operated load switch described in the claim 4, it is characterized in that: piston cylinder is dominated electric pole (7) and is connected on the drive link (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201597928U CN201017812Y (en) | 2006-12-01 | 2006-12-01 | SF6 direct-action pneumatic type switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201597928U CN201017812Y (en) | 2006-12-01 | 2006-12-01 | SF6 direct-action pneumatic type switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201017812Y true CN201017812Y (en) | 2008-02-06 |
Family
ID=39058311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201597928U Expired - Fee Related CN201017812Y (en) | 2006-12-01 | 2006-12-01 | SF6 direct-action pneumatic type switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201017812Y (en) |
-
2006
- 2006-12-01 CN CNU2006201597928U patent/CN201017812Y/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080206 Termination date: 20141201 |
|
| EXPY | Termination of patent right or utility model |