CN216528504U - High-safety electric locking device - Google Patents
High-safety electric locking device Download PDFInfo
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- CN216528504U CN216528504U CN202122176819.1U CN202122176819U CN216528504U CN 216528504 U CN216528504 U CN 216528504U CN 202122176819 U CN202122176819 U CN 202122176819U CN 216528504 U CN216528504 U CN 216528504U
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Abstract
The utility model discloses a high-safety electric locking device, which comprises a breaker local control circuit, an A-phase opening and protection tripping circuit, a B-phase opening and protection tripping circuit, a C-phase opening and protection tripping circuit, wherein the A-phase opening and protection tripping circuit, the B-phase opening and protection tripping circuit and the C-phase opening and protection tripping circuit at least comprise breaker remote/local handles, a first breaker air chamber pressure low-voltage locking tripping, a first breaker opening coil, a first breaker opening contactor and a first three-phase inconsistent tripping relay, the breaker remote/local handles are electrically connected to the first breaker opening coil, the first breaker opening contactor and the first three-phase inconsistent tripping relay are electrically connected to the breaker remote/local handles, the A-phase opening and protection tripping circuit, the B-phase opening and protection tripping circuit and the first breaker opening contactor of the C-phase opening and protection tripping circuit are in short circuit with each other, and then the first breaker opening contactors of the A-phase opening and protection tripping circuit are electrically connected to the breaker remote/local handles And switching in a local control circuit of the circuit breaker.
Description
Technical Field
The utility model relates to the technical field of electrical equipment in the power industry, in particular to a high-safety electrical locking device.
Background
The 220kV GIS circuit breaker has the phenomenon of multiple times of stealing and jumping. At present, in a circuit breaker control loop in the industry, local opening/closing positive voltages are all connected to a positive voltage power supply led by an operation box of a main control room, when a remote/local handle is turned to a remote position in a normal loaded operation state of the circuit breaker, the possibility of the circuit breaker stealing and jumping can be caused if a local tripping relay contact is connected due to moisture, vibration or small animal connection; the safe and stable operation of the power grid equipment is influenced. The present application therefore aims to provide a high-safety electrical blocking device which is able to overcome the above-mentioned drawbacks.
Disclosure of Invention
The object of the present invention is to overcome the disadvantages of the prior art and to provide an electrical latching device with high safety.
The purpose of the utility model is realized by the following technical scheme: a high-safety electric blocking device at least comprises a local control circuit of a breaker, an A-phase separating and protecting tripping circuit, a B-phase separating and protecting tripping circuit and a C-phase separating and protecting tripping circuit which are electrically connected with each other, wherein the A-phase separating and protecting tripping circuit, the B-phase separating and protecting tripping circuit and the C-phase separating and protecting tripping circuit at least comprise a remote/local handle of the breaker, a first breaker air chamber pressure low-voltage blocking tripping circuit, a first breaker separating coil, a first breaker separating contactor and a first three-phase inconsistent tripping relay, the remote/local handle of the breaker is electrically connected to the first breaker separating coil through the first breaker air chamber pressure low-voltage blocking tripping circuit, the first breaker separating contactor and the first three-phase inconsistent tripping relay are electrically connected to the remote breaker/local handle in a parallel connection mode, and the phase A separating brake and protection tripping circuit, the phase B separating brake and protection tripping circuit and the phase C separating brake and protection tripping circuit are respectively connected with the breaker local control circuit after respective first breaker separating brake contactors are in short circuit with each other.
Preferably, the circuit breaker is control circuit on spot includes circuit breaker distant place/handle on spot, five prevent locks, circuit breaker closing button and first circuit breaker closing contactor at least, circuit breaker distant place/handle on spot warp five prevent that the locking electricity is connected to circuit breaker closing button, first circuit breaker closing contactor electricity is connected to circuit breaker closing button, circuit breaker separating brake contactor inserts the circuit between five prevent locks and the circuit breaker closing button after the short circuit each other.
Preferably, the circuit breaker control circuit on spot still includes second circuit breaker separating brake contactor and the circuit breaker separating brake button of establishing ties each other, second circuit breaker separating brake contactor is connected to first circuit breaker closing contactor, circuit breaker separating brake button inserts the circuit between five anti-locks and the circuit breaker closing button.
Preferably, the first three-phase inconsistent tripping relays of the phase a switching-off and protection tripping circuit, the phase B switching-off and protection tripping circuit and the phase C switching-off and protection tripping circuit are connected to a switching-on/tripping power supply after being short-circuited with each other.
Preferably, the phase a switching and tripping protection circuit, the phase B switching and tripping protection circuit, and the phase C switching and tripping protection circuit have their respective first breaker switching coils shorted to each other and then connected to a switching on/tripping power supply.
Preferably, first circuit breaker open brake coil has first contact, second contact and third contact at least, first contact with be provided with circuit breaker auxiliary contact between the first circuit breaker open brake coil, circuit breaker auxiliary contact is connected to through first route the third contact, circuit breaker auxiliary contact is connected to through the second route the second contact, wherein, first contact is connected to first circuit breaker air chamber pressure low pressure blocking tripping operation, the second contact is connected to combined floodgate/tripping power supply 8.
Preferably, the high-safety electrical locking device further includes an a-phase closing and closing loop monitoring circuit, a B-phase closing and closing loop monitoring circuit, and a C-phase closing and closing loop monitoring circuit, where the a-phase closing and closing loop monitoring circuit, the B-phase closing and closing loop monitoring circuit, and the C-phase closing and closing loop monitoring circuit at least include a second breaker closing contactor, a second breaker air chamber pressure low-voltage locking trip, and a second breaker opening coil, and the second breaker closing contactor is connected to the second breaker opening coil through the second breaker air chamber pressure low-voltage locking trip.
Preferably, the a-phase switching-on and switching-off loop monitoring circuit, the B-phase switching-on and switching-off loop monitoring circuit, and the C-phase switching-on and switching-off loop monitoring circuit further include a first three-phase inconsistent trip relay and a second three-phase inconsistent trip relay connected in series with each other, and second breaker opening coils of the a-phase switching-on and switching-off loop monitoring circuit, the B-phase switching-on and switching-off loop monitoring circuit, and the C-phase switching-on and switching-off loop monitoring circuit are connected to the first three-phase inconsistent trip relay after being short-circuited.
Preferably, the A-phase switching-on and switching-on loop monitoring circuit further comprises a first breaker tripping-prevention relay, the B-phase switching-on and switching-on loop monitoring circuit further comprises a second breaker tripping-prevention relay, the C-phase switching-on and switching-on loop monitoring circuit further comprises a third breaker tripping-prevention relay, and the first breaker tripping-prevention relay, the second breaker tripping-prevention relay and the third breaker tripping-prevention relay are respectively connected into circuits between the corresponding second breaker switching-on contactor and the second breaker air chamber pressure low-pressure locking tripping.
Preferably, the second three-phase inconsistent trip relay is connected to a closing/tripping power supply.
The utility model has the following advantages: this application is through shutting the circuit breaker on the spot control circuit positive voltage through distant place/handle and five prevent that the double contact of code lock closes, forms the circuit breaker on the spot control circuit and installs electric blocking device additional to solved because humidity, the big or little animal of collection accuse cabinet vibration lead to the contact switch-on of separating brake relay to make the circuit breaker steal the jump, guaranteed the safety and stability operation of circuit breaker.
Drawings
FIG. 1 is a schematic diagram of a preferred high safety electrical latching unit circuit connection configuration of the present invention;
FIG. 2 is a wiring schematic of a preferred phase A trip and protection circuit of the present invention;
FIG. 3 is a wiring schematic of a preferred phase B trip and protection circuit of the present invention;
FIG. 4 is a wiring schematic of a preferred C-phase trip and protection circuit of the present invention;
FIG. 5 is a schematic diagram of the preferred A-phase closing and monitoring circuit of the closing circuit of the present invention;
FIG. 6 is a schematic diagram of the preferred B-phase switching-on and switching-on circuit monitoring circuit of the present invention;
FIG. 7 is a schematic diagram of the preferred C-phase closing and monitoring circuit of the closing circuit of the present invention;
in the figure, a 1-breaker local control circuit, a 2-A phase opening and protection tripping circuit, a 3-B phase opening and protection tripping circuit, a 4-C phase opening and protection tripping circuit, a 5-A phase closing and closing loop monitoring circuit, a 6-B phase closing and closing loop monitoring circuit, a 7-C phase closing and closing loop monitoring circuit, an S0A-breaker opening button, a K0A.2D-first breaker opening contactor, a K0A-second breaker opening contactor, an S101-breaker remote/local handle, a K23-first breaker air chamber pressure low-voltage lockout tripping, an S0-breaker auxiliary contact, a Y2-first breaker opening coil, a K43-first three-phase inconsistent tripping relay, a WF 0-five-prevention lock, an S0E-breaker closing button, a WF 0-five-prevention lock, a S0-breaker closing button, K0E-first breaker closing contactor, K0E.1D-second breaker closing contactor, K21.1.4E-first breaker anti-tripping relay, K21.2.6E-second breaker anti-tripping relay, K21.3.8E-third breaker anti-tripping relay, K24-second breaker air chamber pressure low-voltage lockout tripping, Y1-second breaker opening coil, K45-second three-phase inconsistent tripping relay and 8-closing/tripping power supply.
Detailed Description
The utility model will be further described with reference to the accompanying drawings, without limiting the scope of the utility model to the following:
as shown in fig. 1 to 7, the present application provides a high safety electrical blocking apparatus, which includes at least a circuit breaker local control circuit 1, an a-phase opening and protection trip circuit 2, a B-phase opening and protection trip circuit 3, and a C-phase opening and protection trip circuit 4 electrically connected to each other. The A-phase opening and protection tripping circuit 2, the B-phase opening and protection tripping circuit 3 and the C-phase opening and protection tripping circuit 4 at least comprise a breaker remote/local handle S101, a first breaker air chamber pressure low-voltage blocking tripping K23, a first breaker opening coil Y2, a first breaker opening contactor K0A.2D and a first three-phase inconsistent tripping relay K43. The breaker remote/local handle S101 is electrically connected to the first breaker trip coil Y2 via the first breaker plenum pressure low voltage lockout trip K23. The first breaker opening contactor kh0 a.2d and the first three-phase incongruous trip relay K43 are electrically connected to the breaker remote/local handle S101 in parallel with each other. A phase-A separating brake and protection tripping circuit 2, a phase-B separating brake and protection tripping circuit 3 and a phase-C separating brake and protection tripping circuit 4 are connected to a breaker local control circuit 1 after respective first breaker separating brake contactors K0A.2D are short-circuited with each other.
Preferably, the circuit breaker local control circuit 1 includes at least a circuit breaker remote/local handle S101, a five-prevention lock WF0, a circuit breaker closing button S0E, and a first circuit breaker closing contactor K0E. The breaker remote/home handle S101 is electrically connected to the breaker close button S0E via a five-way lock WF 0. The first breaker closing contactor K0E is electrically connected to the breaker closing button S0E, and the breaker opening contactor K0A is connected to a circuit between the five-prevention lock WF0 and the breaker closing button S0E after being short-circuited with each other.
Preferably, the local circuit breaker control circuit 1 further comprises a second breaker opening contactor K0A and a breaker opening button S0A connected in series with each other. The second breaker opening contactor K0A is connected to the first breaker closing contactor K0E, and the breaker opening button S0A is connected to a circuit between the five-prevention lock WF0 and the breaker closing button S0E.
Preferably, the first three-phase inconsistent tripping relay K43 of each of the phase a switching and protection tripping circuit 2, the phase B switching and protection tripping circuit 3 and the phase C switching and protection tripping circuit 4 is connected to the switching on/tripping power supply 8 after being shorted with each other.
Preferably, the first breaker opening coil Y2 of each of the a-phase opening and protection tripping circuit 2, the B-phase opening and protection tripping circuit 3 and the C-phase opening and protection tripping circuit 4 is short-circuited to each other and then connected to the closing/tripping power supply 8.
Preferably, the first breaker opening coil Y2 has at least a first contact X0: a1, second contact X0: a2 and third contact X0: b4, first contact X0: a breaker auxiliary contact S0 is arranged between a1 and the first breaker opening coil Y2, and the breaker auxiliary contact S0 is connected to the third contact X0 through a first path: B4. the breaker auxiliary contact S0 is connected to the second contact X0 by a second path: a2, wherein the first contact X0: a1 is connected to the first breaker plenum pressure low voltage lockout trip K23, the second contact X0: a2 is connected to the closing/tripping power supply 8.
Preferably, the high-safety electric locking device further includes an a-phase closing and closing circuit monitoring circuit 5, a B-phase closing and closing circuit monitoring circuit 6, and a C-phase closing and closing circuit monitoring circuit 7. The A-phase closing and closing loop monitoring circuit 5, the B-phase closing and closing loop monitoring circuit 6 and the C-phase closing and closing loop monitoring circuit 7 at least comprise a second breaker closing contactor K0E.1D, a second breaker air chamber pressure low-voltage locking tripping K24 and a second breaker opening coil Y1. The second breaker closing contactor K0E.1D is connected to the second breaker opening coil Y1 through a second breaker chamber pressure low-voltage lockout trip K24.
Preferably, the a-phase closing and closing circuit monitoring circuit 5, the B-phase closing and closing circuit monitoring circuit 6, and the C-phase closing and closing circuit monitoring circuit 7 further include a first three-phase inconsistent tripping relay K43 and a second three-phase inconsistent tripping relay K45 connected in series, and second breaker opening coils Y1 of the a-phase closing and closing circuit monitoring circuit 5, the B-phase closing and closing circuit monitoring circuit 6, and the C-phase closing and closing circuit monitoring circuit 7 are connected to the first three-phase inconsistent tripping relay K43 after being short-circuited.
Preferably, the a-phase closing and closing loop monitoring circuit 5 further includes a first breaker tripping-prevention relay K21.1, the B-phase closing and closing loop monitoring circuit 6 further includes a second breaker tripping-prevention relay K21.2, the C-phase closing and closing loop monitoring circuit 7 further includes a third breaker tripping-prevention relay K21.3, and the first breaker tripping-prevention relay K21.1, the second breaker tripping-prevention relay K21.2 and the third breaker tripping-prevention relay K21.3 are respectively connected to a circuit between a second breaker closing contactor K0e.1d and a second breaker air chamber pressure low-voltage blocking tripping K24 corresponding thereto.
Preferably, the second three-phase incongruous trip relay K45 is connected to the closing/tripping power supply 8.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A high-safety electrical blocking device comprising at least a breaker local control circuit (1), an A-phase opening and protection tripping circuit (2), a B-phase opening and protection tripping circuit (3) and a C-phase opening and protection tripping circuit (4) electrically connected to each other, characterized in that the A-phase opening and protection tripping circuit (2), the B-phase opening and protection tripping circuit (3) and the C-phase opening and protection tripping circuit (4) each comprise at least a breaker remote/local handle (S101), a first breaker plenum pressure low-voltage blocking tripping (K23), a first breaker opening coil (Y2), a first breaker opening contactor (K0A.2D) and a first three-phase inconsistent tripping relay (K43), the remote/local handle (S101) being electrically connected to the first breaker opening coil (Y2) via a first breaker plenum pressure low-voltage blocking tripping (K23), first circuit breaker separating brake contactor (K0A.2D) and first three-phase inconsistent tripping relay (K43) are electrically connected to circuit breaker distant place/local handle (S101) according to the mode of parallelly connected each other, A looks separating brake and protection tripping circuit (2), B looks separating brake and protection tripping circuit (3) and C looks separating brake and protection tripping circuit (4) insert behind the respective first circuit breaker separating brake contactor (K0A.2D) short circuit each other circuit breaker local control circuit (1).
2. High-safety electrical latching device according to claim 1, characterized in that the circuit breaker local control circuit (1) comprises at least a circuit breaker remote/local handle (S101), a five-prevention lock (WF0), a circuit breaker closing button (S0E) and a first circuit breaker closing contactor (K0E), the circuit breaker remote/local handle (S101) is electrically connected to the circuit breaker closing button (S0E) via the five-prevention lock (WF0), the first circuit breaker closing contactor (K0E) is electrically connected to the circuit breaker closing button (S0E), and the circuit breaker opening contactor (K0A) is short-circuited to each other and then connected to the circuit between the five-prevention lock (WF0) and the circuit breaker closing button (S0E).
3. High safety electrical lock according to claim 2, characterized in that the breaker local control circuit (1) further comprises a second breaker opening contactor (K0A) and a breaker opening button (S0A) connected in series with each other, the second breaker opening contactor (K0A) being connected to the first breaker closing contactor (K0E), the breaker opening button (S0A) being connected to the circuit between the five-prevention lock (WF0) and the breaker closing button (S0E).
4. High safety electrical blocking device according to claim 3, characterized in that the first three-phase non-uniform tripping relay (K43) of each of the A-phase opening and protection tripping circuit (2), the B-phase opening and protection tripping circuit (3) and the C-phase opening and protection tripping circuit (4) is short-circuited to each other and then connected to the closing/tripping power supply (8).
5. The high-safety electrical blocking apparatus according to claim 4, wherein the first breaker opening coil (Y2) of each of the A-phase opening and protection tripping circuit (2), the B-phase opening and protection tripping circuit (3) and the C-phase opening and protection tripping circuit (4) is connected to the closing/tripping power supply (8) after being shorted with each other.
6. A high safety electrical lockout device according to claim 5 wherein the first breaker opening coil (Y2) has at least a first contact (X0: A1), a second contact (X0: A2) and a third contact (X0: B4), a breaker auxiliary contact (S0) is provided between the first contact (X0: A1) and the first breaker opening coil (Y2), the breaker auxiliary contact (S0) is connected to the third contact (X0: B4) by a first path, the breaker auxiliary contact (S0) is connected to the second contact (X0: A2) by a second path, wherein the first contact (X0: A1) is connected to the first breaker plenum pressure low pressure trip lockout (K23) and the second contact (X0: A2) is connected to the closing/trip power supply (8).
7. The high-safety electrical latching apparatus according to claim 6, further comprising an A-phase closing and closing loop monitoring circuit (5), a B-phase closing and closing loop monitoring circuit (6), and a C-phase closing and closing loop monitoring circuit (7), the A-phase closing and closing loop monitoring circuit (5), the B-phase closing and closing loop monitoring circuit (6) and the C-phase closing and closing loop monitoring circuit (7) at least comprise a second breaker closing contactor (K0E.1D), a second breaker air chamber pressure low-voltage locking tripping circuit (K24) and a second breaker opening coil (Y1), the second breaker closing contactor (K0E.1D) is connected to the second breaker opening coil (Y1) through the second breaker air chamber pressure low-voltage lockout trip (K24).
8. The high-safety electrical latching apparatus according to claim 7, wherein the a-phase closing and closing circuit monitoring circuit (5), the B-phase closing and closing circuit monitoring circuit (6) and the C-phase closing and closing circuit monitoring circuit (7) further comprise a first three-phase inconsistent tripping relay (K43) and a second three-phase inconsistent tripping relay (K45) connected in series with each other, and the second breaker tripping coil (Y1) of each of the a-phase closing and closing circuit monitoring circuit (5), the B-phase closing and closing circuit monitoring circuit (6) and the C-phase and closing circuit monitoring circuit (7) is connected to the first three-phase inconsistent tripping relay (K43) after being short-circuited.
9. The high-safety electrical locking device according to claim 8, wherein the phase a closing and closing loop monitoring circuit (5) further comprises a first breaker tripping-prevention relay (K21.1), the phase B closing and closing loop monitoring circuit (6) further comprises a second breaker tripping-prevention relay (K21.2), and the phase C closing and closing loop monitoring circuit (7) further comprises a third breaker tripping-prevention relay (K21.3), and the first breaker tripping-prevention relay (K21.1), the second breaker tripping-prevention relay (K21.2) and the third breaker tripping-prevention relay (K21.3) are respectively connected to a circuit between the corresponding second breaker closing contactor (K0e.1d) and the second breaker gas chamber pressure low-voltage tripping circuit (K24).
10. The high safety electrical latching unit according to claim 8, wherein the second three-phase incongruous trip relay (K45) is connected to the closing/tripping power supply (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122176819.1U CN216528504U (en) | 2021-09-09 | 2021-09-09 | High-safety electric locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122176819.1U CN216528504U (en) | 2021-09-09 | 2021-09-09 | High-safety electric locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216528504U true CN216528504U (en) | 2022-05-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122176819.1U Active CN216528504U (en) | 2021-09-09 | 2021-09-09 | High-safety electric locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216528504U (en) |
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2021
- 2021-09-09 CN CN202122176819.1U patent/CN216528504U/en active Active
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