CN214313038U - Device for preventing 6kV electricity from keeping vacuum contactor to jump - Google Patents
Device for preventing 6kV electricity from keeping vacuum contactor to jump Download PDFInfo
- Publication number
- CN214313038U CN214313038U CN202120564201.XU CN202120564201U CN214313038U CN 214313038 U CN214313038 U CN 214313038U CN 202120564201 U CN202120564201 U CN 202120564201U CN 214313038 U CN214313038 U CN 214313038U
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- China
- Prior art keywords
- contact
- contactor
- combined floodgate
- intermediate relay
- jumping
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- 230000005611 electricity Effects 0.000 title claims abstract description 11
- 230000009191 jumping Effects 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 claims description 16
- 238000004880 explosion Methods 0.000 abstract description 4
- 230000007423 decrease Effects 0.000 abstract description 3
- 230000005284 excitation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
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Abstract
The utility model discloses a prevent that 6kV electricity from keeping vacuum contactor "jumping"'s device, including control contact, measuring and control device protection contact, operating position contact, anti-bouncing return circuit, combined floodgate contactor and fuse state contact, control contact one end is connected with measuring and control device protection contact, measuring and control device protection contact one end is connected with the operating position contact, operating position contact one end is connected with combined floodgate contactor, combined floodgate contactor one end is connected with fuse state contact, anti-bouncing return circuit is connected between operating position contact and combined floodgate contactor. The utility model discloses, can prevent because the trouble is not eliminated on the circuit, protection device acts in the phenomenon that "jump and close" appears many times in the tripping operation, avoids causing the breaking capacity decline or damage of circuit breaker, arouses the explosion accident even.
Description
Technical Field
The utility model relates to a prevent jumping circuit technical field, especially relate to a prevent that 6kV electricity from keeping vacuum contactor "device of jumping".
Background
The high-voltage switch is the most important control and protection equipment in power plants, substations and industrial power systems, and mainly has the functions of connecting and disconnecting load current, quickly disconnecting fault current when a short-circuit fault occurs on a line, protecting the safety of electric equipment, controlling most equipment with the capacity of below 1250kVA by adopting a high-voltage vacuum contactor to reduce cost investment, and adopting a vacuum circuit breaker with the capacity of above 1250 kVA. The safety operation of the switch is important for ensuring the safety power supply, and the anti-jumping function of the switch is a necessary condition for ensuring the safety operation of the switch, so that the switch cannot jump under any condition, and meanwhile, a parasitic loop cannot appear in a control loop of the switch.
Currently, when a circuit breaker is manually or automatically switched on a faulty line, a relay protection device trips. At the moment, if an operator still puts the control switch at the switching-on position or the contact of the automatic reclosing device is not reset, the circuit breaker is switched on again, because the fault on the circuit is not eliminated, the protection device acts on tripping again, so that the phenomenon of multiple tripping is caused, the breaking capacity of the circuit breaker is reduced or damaged, and even an explosion accident is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving among the prior art circuit breaker manual or automatic combined floodgate and on faulty circuit, overload protection device will move the tripping operation, this moment, if operating personnel still put control switch at the combined floodgate position, or the contact of autoeclosing device is not reset, the circuit breaker will take place combined floodgate once more, because the trouble does not eliminate on the circuit, protection device moves in the tripping operation again, thereby appear the phenomenon of "jumping" many times, cause the breaking capacity decline or the damage of circuit breaker, arouse the problem of explosion accident even, and the device that prevents that 6kV electricity from keeping vacuum contactor "jump".
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a prevent that 6kV electricity from keeping vacuum contactor "jumping"'s device, includes control contact, measurement and control device protection contact, operating position contact, anti-skip return circuit, combined floodgate contactor and fuse state contact, control contact one end is connected with measurement and control device protection contact, measurement and control device protection contact one end is connected with the operating position contact, operating position contact one end is connected with combined floodgate contactor, combined floodgate contactor one end is connected with fuse state contact, anti-skip return circuit is connected between operating position contact and combined floodgate contactor.
Preferably, the anti-tripping circuit comprises a first intermediate relay and a second intermediate relay, wherein one end of the first intermediate relay is connected with a normally open contact, the normally open contact is connected with a protection contact of the measurement and control device, the other end of the first intermediate relay is connected with a normally closed contact, the normally closed contact is connected between a working position contact and a closing contactor, one end of the second intermediate relay is connected with a first auxiliary contact and a second auxiliary contact, the first auxiliary contact is connected between a control contact and the normally open contact, and the other end of the second intermediate relay is installed between the first intermediate relay and a fuse state contact.
Preferably, the first auxiliary contact is a normally open point, and the second auxiliary contact is a normally closed point.
Preferably, an accident button is connected between the protection contact of the measurement and control device and the working position contact in series.
Compared with the prior art, the utility model provides a prevent that 6kV electricity from keeping vacuum contactor "jumping"'s device possesses following beneficial effect:
this prevent that 6kV electricity from keeping vacuum contactor "jumping", through keeping burden accuse generating line and whole control circuit intercommunication, the combined floodgate coil in combined floodgate contactor gets electric excitation, make operating position contact switch-on electric circuit, auxiliary relay is the electricity first this moment, normally open contact switch-on, and keep the protection action, when measurement and control device protection contact disconnection, combined floodgate contactor loses electric separating brake, combined floodgate contactor separating brake back, auxiliary contact keeps normally open state, auxiliary contact keeps normally closed state, when control contact adhesion, auxiliary relay is two starts and keeps, auxiliary contact is two breaks off, normally closed contact does not get electric this moment, combined floodgate contactor can't close a floodgate, thereby can prevent because the trouble does not eliminate on the circuit, protection device moves in the tripping operation again, thereby the phenomenon of "jumping to shut" appears many times.
The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses, can prevent because the trouble is not eliminated on the circuit, the phenomenon that "jump to close" appears in tripping operation in many times is acted on protection device, avoids causing the breaking capacity decline or the damage of circuit breaker, arouses the explosion accident even.
Drawings
Fig. 1 is a wiring diagram of a device for preventing the 6kV electric hold vacuum contactor from jumping, according to the present invention.
In the figure: 1. a control contact; 2. the measurement and control device protects the contact; 3. an accident button; 4. a working position contact; 5. closing a contactor; 6. a fuse state contact; 7. a second intermediate relay; 8. a first intermediate relay; 9. an auxiliary contact II; 10. a normally open contact; 11. an auxiliary contact I; 12. the normally closed contact.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1, a device for preventing 6kV electricity from keeping a vacuum contactor from jumping comprises a control contact 1, a measurement and control device protection contact 2, a working position contact 4, an anti-jumping loop, a closing contactor 5 and a fuse state contact 6, wherein one end of the control contact 1 is connected with the measurement and control device protection contact 2, one end of the measurement and control device protection contact 2 is connected with the working position contact 4, an accident button 3 is connected between the measurement and control device protection contact 2 and the working position contact 4 in series, one end of the working position contact 4 is connected with the closing contactor 5, one end of the closing contactor 5 is connected with the fuse state contact 6, the anti-jumping loop is connected between the working position contact 4 and the closing contactor 5, the anti-jumping loop comprises a first intermediate relay 8 and a second intermediate relay 7, one end of the first intermediate relay 8 is connected with a normally open contact 10, and the normally open contact 10 is connected with the measurement and control device protection contact 2, the other end of the first intermediate relay 8 is connected with a normally closed contact 12, the normally closed contact 12 is connected between the working position contact 4 and the closing contactor 5, one end of the second intermediate relay 7 is connected with a first auxiliary contact 11 and a second auxiliary contact 9, the first auxiliary contact 11 is connected between the control contact 1 and the normally open contact 10, the other end of the second intermediate relay 7 is installed between the first intermediate relay 8 and the fuse state contact 6, the first auxiliary contact 11 is a normally open point, and the second auxiliary contact 9 is a normally closed point.
The working principle of the utility model is, keep burden accuse generating line and whole control circuit intercommunication, the combined floodgate coil in combined floodgate contactor 5 gets electric excitation, make the 9 switch-on electric return circuits of operating position contact, intermediate relay 8 gets electric this moment, normally open contact 10 switches on, and keep the protection action, when measuring and control device protection contact 2 disconnection, combined floodgate contactor 5 loses the electric separating brake, combined floodgate contactor 5 separating brake back, auxiliary contact 11 keeps normally open state, auxiliary contact two 9 keep normally closed state, when control contact 1 adhesion, two 7 starts and keeps of intermediate relay, two 9 disconnections of auxiliary contact, normally closed contact 12 does not get electric this moment, combined floodgate contactor 5 can't close a floodgate, thereby can prevent because the trouble does not eliminate on the circuit, protection device moves in the tripping operation again, thereby the phenomenon of "tripping operation" appears many times.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (4)
1. The utility model provides a prevent that 6kV electricity from keeping vacuum contactor "jumping", its characterized in that, includes control contact (1), measurement and control device protection contact (2), operating position contact (4), prevents jumping the return circuit, combined floodgate contactor (5) and fuse state contact (6), control contact (1) one end is connected with measurement and control device protection contact (2), measurement and control device protection contact (2) one end is connected with operating position contact (4), operating position contact (4) one end is connected with combined floodgate contactor (5), combined floodgate contactor (5) one end is connected with fuse state contact (6), it connects between operating position contact (4) and combined floodgate contactor (5) to prevent jumping the return circuit.
2. The apparatus of claim 1, wherein the means for preventing "jumping" of a 6kV electric hold-up vacuum contactor, it is characterized in that the anti-jump loop comprises a first intermediate relay (8) and a second intermediate relay (7), one end of the intermediate relay I (8) is connected with a normally open contact (10), the normally open contact (10) is connected with the protection contact (2) of the measurement and control device, the other end of the intermediate relay I (8) is connected with a normally closed contact (12), the normally closed contact (12) is connected between the working position contact (4) and the closing contactor (5), one end of the intermediate relay II (7) is connected with an auxiliary contact I (11) and an auxiliary contact II (9), the auxiliary contact I (11) is connected between the control contact (1) and the normally open contact (10), the other end of the second intermediate relay (7) is arranged between the first intermediate relay (8) and the fuse state contact (6).
3. A device for preventing "jumping" of a 6kV electric hold vacuum contactor as claimed in claim 2, wherein the first auxiliary contact (11) is a normally open point and the second auxiliary contact (9) is a normally closed point.
4. A device for preventing "jumping" of a 6kV electric hold-up vacuum contactor according to claim 1, characterized in that an accident button (3) is connected in series between the measuring and control device protection contact (2) and the working position contact (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120564201.XU CN214313038U (en) | 2021-03-19 | 2021-03-19 | Device for preventing 6kV electricity from keeping vacuum contactor to jump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120564201.XU CN214313038U (en) | 2021-03-19 | 2021-03-19 | Device for preventing 6kV electricity from keeping vacuum contactor to jump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214313038U true CN214313038U (en) | 2021-09-28 |
Family
ID=77836904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120564201.XU Expired - Fee Related CN214313038U (en) | 2021-03-19 | 2021-03-19 | Device for preventing 6kV electricity from keeping vacuum contactor to jump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214313038U (en) |
-
2021
- 2021-03-19 CN CN202120564201.XU patent/CN214313038U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210928 |