CN214898233U - Solid-sealed polar pole of draw-out type vacuum circuit breaker - Google Patents
Solid-sealed polar pole of draw-out type vacuum circuit breaker Download PDFInfo
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- CN214898233U CN214898233U CN202121574532.8U CN202121574532U CN214898233U CN 214898233 U CN214898233 U CN 214898233U CN 202121574532 U CN202121574532 U CN 202121574532U CN 214898233 U CN214898233 U CN 214898233U
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- circuit breaker
- main loop
- current transformer
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- point post
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Abstract
The utility model discloses a pull-out type vacuum circuit breaker's solid utmost point post that seals, including solid utmost point post body that seals, gu seal utmost point post body and include utmost point post body and vacuum interrupter, inside the main loop electric conductor penetrates the vacuum interrupter after passing utmost point post body, current transformer's annular iron core has been cup jointed in the main loop electric conductor outside, current transformer's output winding is drawn forth the back through the fixing bolt base that sets up in the utmost point post body outside and is linked to each other with control terminal through the wire for thereby it shows electric quantity signal to acquire main loop current change and utilize control terminal analysis current change through current transformer after the main loop switch-on, overcurrent tripping signal and output alarm signal. The utility model adopts the solid-sealed polar pole of the drawout vacuum circuit breaker with the structure, and the solid-sealed polar pole is processed in an integrated way, and has the advantages of simple structure, small volume and the like; and only rely on air insulation, the return circuit greatly reduces multiple contact, avoids many laps, has reduced the contact resistance that a plurality of devices are connected, and the reliability is strong.
Description
Technical Field
The utility model relates to a circuit breaker technique especially relates to a pull-out type vacuum circuit breaker's solid utmost point post that seals.
Background
The vacuum circuit breaker is named because arc extinguishing media and insulating media of contact gaps after arc extinguishing are high vacuum; the arc extinguishing device has the advantages of small volume, light weight, suitability for frequent operation and no need of maintenance for arc extinguishing, and is relatively popularized in power distribution networks.
Vacuum circuit breakers on the market at present include VS1-12 type circuit breaker, VD4-12 type circuit breaker, VEP-12 type circuit breaker, 3AE-12 type circuit breaker, ZN118-12 type circuit breaker and the like. The circuit breakers all belong to single-row unit circuit breakers, do not have a signal processing function, and need to rely on external signal acquisition and control, so that the control function of opening and closing actions is realized. Therefore, the following disadvantages exist: 1. the body shape is large; 2. after the switch contacts are connected, the switch contacts are formed by copper bar lapping, contact points are more, the resistance of a main loop is increased due to overhigh temperature rise, and the insulation performance of the insulating material of the main loop is gradually reduced due to the fact that the switch contacts run for a long time along with certain temperature rise.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a solid-sealed polar pole of a draw-out type vacuum circuit breaker, which is processed in an integrated way and has the advantages of simple structure, small volume and the like; and only rely on air insulation, the return circuit greatly reduces multiple contact, avoids many laps, has reduced the contact resistance that a plurality of devices are connected, and the reliability is strong.
For the purpose of the realization, the utility model provides a pull-out type vacuum circuit breaker's solid utmost point post that seals, including installing the solid utmost point post body that seals in the circuit breaker frame, gu seal utmost point post body and include utmost point post body and the vacuum interrupter who arranges in proper order from the top down, the main loop electric conductor passes penetrate behind the utmost point post body inside the vacuum interrupter, the annular iron core of current transformer has been cup jointed in the main loop electric conductor outside, current transformer's output winding through set up in the fixing bolt base in the utmost point post body outside is drawn forth the back and is linked to each other with control terminal through the wire for thereby it shows electric quantity signal, overcurrent trip signal and output alarm signal to obtain main loop current variation and utilize control terminal analysis current variation through current transformer after the main loop switch-on.
Preferably, a fixed contact and a movable contact are sequentially arranged inside the vacuum arc-extinguishing chamber from top to bottom, the top end of the fixed contact is electrically connected with one end of the main loop conductor, and the other end of the main loop conductor sequentially penetrates through the vacuum arc-extinguishing chamber, the annular iron core of the current transformer and the pole body;
the moving contact is arranged below the fixed contact, a conductive flexible connection is arranged at one end, far away from the fixed contact, of the moving contact, and the outer side of the moving contact is connected with the corrugated pipe.
Preferably, the inner wall of the vacuum arc-extinguishing chamber is adhered with rubber coating, and the outer wall of the vacuum arc-extinguishing chamber is fixed with a fixed insert.
Preferably, the main circuit conductor, the current transformer and the vacuum interrupter are encapsulated by an APG pressing process.
Preferably, the current transformer is encapsulated outside the main circuit conductor and inside the pole body via an insulating resin.
Preferably, at least two current transformers are sleeved outside the main loop conductor.
Preferably, the current transformer is a ring current transformer.
Preferably, the annular iron core of the current transformer is an amorphous iron core.
Therefore, the utility model adopts the solid-sealed polar pole of the drawout vacuum circuit breaker with the structure, and the solid-sealed polar pole is integrally processed, and has the advantages of simple structure, small volume and the like; and only rely on air insulation, the return circuit greatly reduces multiple contact, avoids many laps, has reduced the contact resistance that a plurality of devices are connected, and the reliability is strong.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a longitudinal sectional view of a sealed pole of a drawout vacuum circuit breaker according to an embodiment of the present invention;
fig. 2 is a perspective view of a sealed pole of a drawout vacuum circuit breaker according to an embodiment of the present invention;
fig. 3 is a front view of a sealed pole of a drawout vacuum circuit breaker according to an embodiment of the present invention;
fig. 4 is a top view of a sealed pole of a drawout vacuum circuit breaker according to an embodiment of the present invention;
fig. 5 is a bottom view of a sealed pole of a drawout vacuum circuit breaker according to an embodiment of the present invention.
Wherein: 1. a main loop conductor; 2. a pole body; 3. a fixing bolt base; 4. an annular iron core of the current transformer; 5. static contact; 6. a moving contact; 7. encapsulating; 8. a bellows; 9. conducting flexible connection; 10. a vacuum arc-extinguishing chamber; 11. and fixing the insert.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed embodiments and the specific operation processes are provided, but the protection scope of the present invention is not limited to the present embodiment.
Fig. 1 is a longitudinal sectional view of a sealed pole of a drawout vacuum circuit breaker according to an embodiment of the present invention; fig. 2 is a perspective view of a sealed pole of a drawout vacuum circuit breaker according to an embodiment of the present invention; fig. 3 is a front view of a sealed pole of a drawout vacuum circuit breaker according to an embodiment of the present invention;
fig. 4 is a top view of a sealed pole of a drawout vacuum circuit breaker according to an embodiment of the present invention; fig. 5 is the embodiment of the utility model provides a bottom view of draw-out type vacuum circuit breaker's solid utmost point post that seals, as shown in the figure, the utility model discloses a structure is including installing solid utmost point post body 2 that seals in the circuit breaker frame, gu seal utmost point post body 2 and vacuum interrupter 10 that include by last utmost point post body 2 and the vacuum interrupter who arranges in proper order down, main loop electric conductor 1 passes penetrate behind the utmost point post body 2 inside vacuum interrupter 10, current transformer's annular iron core 4 has been cup jointed in the main loop electric conductor 1 outside, and main loop electric conductor 1 places the central point at current transformer's annular iron core 4 and puts, guarantees that main loop current change gathers reliably, current transformer's output winding through set up in it links to each other with control terminal through the wire after fixing bolt base 3 in the utmost point post body 2 outsides draws out for acquire main loop current change and utilize current transformer to utilize behind the main loop switch-on (this moment under operating device's effect sound contact of moving contact) Thereby control terminal analysis current change shows electric quantity signal, overflows trip signal and output alarm signal, has integrated signal processing function, and the practicality is stronger.
Preferably, a fixed contact 5 and a movable contact 6 are sequentially arranged inside the vacuum arc-extinguishing chamber 10 from top to bottom, the top end of the fixed contact 5 is electrically connected with one end of the main loop conductor 1, and the other end of the main loop conductor 1 sequentially penetrates through the vacuum arc-extinguishing chamber 10, the annular iron core 4 of the current transformer and the pole body 2;
the moving contact 6 is arranged below the fixed contact 5, a conductive flexible connection 9 is arranged at one end, far away from the fixed contact 5, of the moving contact 6, and the outer side of the moving contact 6 is connected with a corrugated pipe 8.
Preferably, the inner wall of the vacuum arc-extinguishing chamber 10 is attached with an encapsulation 7, and the outer wall of the vacuum arc-extinguishing chamber 10 is fixed with a fixed insert 11.
Preferably, the main circuit conductor 1, the current transformer and the vacuum interrupter 10 are encapsulated by an APG pressing process, that is, the main circuit conductor 1, the current transformer and the vacuum interrupter 10 are combined to form a module unit, so that the installation space of the components is greatly reduced, and the size of the device is reduced.
Preferably, the current transformer is encapsulated outside the main circuit conductor 1 and inside the pole body 2 via an insulating resin.
Preferably, at least two current transformers are sleeved outside the main loop conductor 1. The current transformer is a ring current transformer. The annular iron core 4 of the current transformer is an amorphous iron core.
Therefore, the utility model adopts the solid-sealed polar pole of the drawout vacuum circuit breaker with the structure, and the solid-sealed polar pole is integrally processed, and has the advantages of simple structure, small volume and the like; and only rely on air insulation, the return circuit greatly reduces multiple contact, avoids many laps, has reduced the contact resistance that a plurality of devices are connected, and the reliability is strong.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a pull-out type vacuum circuit breaker's solid utmost point post that seals, is including installing the solid utmost point post body that seals in the circuit breaker frame, gu seal utmost point post body and include by utmost point post body and the vacuum interrupter who arranges in proper order from the top down, the main loop electric conductor passes penetrate behind the utmost point post body inside the vacuum interrupter, its characterized in that: the outer side of the main loop conductor is sleeved with an annular iron core of a current transformer, an output winding of the current transformer is led out through a fixing bolt base arranged on the outer side of the pole body and then is connected with a control terminal through a wire, and the current transformer is used for acquiring current change of the main loop after the main loop is connected and analyzing the current change through the control terminal so as to display an electric quantity signal, an overcurrent trip signal and an output alarm signal.
2. The embedded pole of the drawout vacuum circuit breaker as claimed in claim 1, wherein: a fixed contact and a movable contact are sequentially arranged in the vacuum arc extinguish chamber from top to bottom, the top end of the fixed contact is electrically connected with one end of the main loop conductor, and the other end of the main loop conductor sequentially penetrates through the vacuum arc extinguish chamber, the annular iron core of the current transformer and the pole body;
the moving contact is arranged below the fixed contact, a conductive flexible connection is arranged at one end, far away from the fixed contact, of the moving contact, and the outer side of the moving contact is connected with the corrugated pipe.
3. The embedded pole of the drawout vacuum circuit breaker according to claim 2, wherein: the inner wall of the vacuum arc-extinguishing chamber is attached with rubber coating, and the outer wall of the vacuum arc-extinguishing chamber is fixed with a fixed insert.
4. The embedded pole of the drawout vacuum circuit breaker as claimed in claim 1, wherein: and the main loop conductor, the current transformer and the vacuum arc-extinguishing chamber are encapsulated by an APG pressing process.
5. The embedded pole of the drawout vacuum circuit breaker as claimed in claim 4, wherein: the current transformer is encapsulated outside the main loop conductor and inside the pole body through insulating resin.
6. The embedded pole of the drawout vacuum circuit breaker as claimed in claim 1, wherein: at least two current transformers are sleeved on the outer side of the main loop conductor.
7. The embedded pole of the drawout vacuum circuit breaker as claimed in claim 1, wherein: the current transformer is a ring current transformer.
8. The embedded pole of the drawout vacuum circuit breaker as claimed in claim 1, wherein: the annular iron core of the current transformer is an amorphous iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121574532.8U CN214898233U (en) | 2021-07-12 | 2021-07-12 | Solid-sealed polar pole of draw-out type vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121574532.8U CN214898233U (en) | 2021-07-12 | 2021-07-12 | Solid-sealed polar pole of draw-out type vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214898233U true CN214898233U (en) | 2021-11-26 |
Family
ID=78908286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121574532.8U Active CN214898233U (en) | 2021-07-12 | 2021-07-12 | Solid-sealed polar pole of draw-out type vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214898233U (en) |
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2021
- 2021-07-12 CN CN202121574532.8U patent/CN214898233U/en active Active
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