CN209881379U - Control loop of electric isolating switch - Google Patents
Control loop of electric isolating switch Download PDFInfo
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- CN209881379U CN209881379U CN201920937535.XU CN201920937535U CN209881379U CN 209881379 U CN209881379 U CN 209881379U CN 201920937535 U CN201920937535 U CN 201920937535U CN 209881379 U CN209881379 U CN 209881379U
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Abstract
The utility model discloses an electric isolating switch control loop, which comprises a power-on time delay relay KT1 switch, a power-on time delay relay KT2 switch, an operation branch, a self-holding branch, a closing branch and an opening branch; the input ends of the operation branch and the self-holding branch are connected with a live wire end through an electrifying delay time relay KT1 switch and an electrifying delay time relay KT2 switch which are connected in series, the output end of the operation branch is connected with the input end of the closing branch and the input end of the opening branch respectively, the output end of the self-holding branch is connected with the input end of the closing branch and the input end of the opening branch respectively, and the output end of the closing branch and the output end of the opening branch are connected with the zero wire end. The utility model discloses can realize that isolator control circuit time delay is automatic to be reset, separate the switch malfunction and operate the maloperation when effectively preventing to throw in motor power supply behind the maintenance test, increase equipment operational reliability.
Description
Technical Field
The utility model belongs to the technical field of on-off control, concretely relates to electronic isolator control circuit.
Background
The existing isolating switch control loop is operated by a local part and a remote part, when a switching-on command or a switching-off command is sent out, a switching-on or switching-off contactor is excited by utilizing a self-holding loop to control an isolating switch motor, and after the isolating switch is operated in place, a limit switch is switched on to disconnect the control loop.
The prior art has the problems or defects that: during maintenance test or operation, the motor power supply which is not switched into the isolating switch may occur, or the isolating switch may not actually operate due to power failure, transmission mechanism failure and other reasons. The control loop is always connected because the limit switch cannot be closed, so that the loop cannot be automatically reset, and false operation occurs once the motor power supply of the isolating switch is recovered.
SUMMERY OF THE UTILITY MODEL
The problem of the control circuit that exists in order to solve prior art can't realize automatic reset and cause the isolator malfunction, the utility model aims to provide an electronic isolator control circuit.
The utility model discloses the technical scheme who adopts does:
the control loop of the electric isolating switch comprises an electrified delay time relay KT1 switch, an electrified delay time relay KT2 switch, an operation branch, a self-holding branch, a closing branch and an opening branch;
the input ends of the operating branch and the self-holding branch are connected with a live wire end through an electrified delay time relay KT1 switch and an electrified delay time relay KT2 switch which are connected in series, the output end of the operating branch is respectively connected with the input end of a closing branch and the input end of an opening branch, the output end of the self-holding branch is respectively connected with the input end of a closing branch and the input end of an opening branch, and the output end of the closing branch and the output end of the opening branch are connected with the neutral wire end;
the switching-on branch comprises a switching-on relay KM1 coil, an electrifying delay time relay KT1 coil, a switching-off relay KM2 second switch and a switching-on position limit switch SL1, wherein the switching-on relay KM1 coil and the electrifying delay time relay KT1 coil are connected in parallel and then connected in series with the switching-off relay KM2 second switch and the switching-on position limit switch SL 1;
the switching-off branch comprises a switching-off relay KM2 coil, an electrified delay time relay KT2 coil, a switching-on relay KM1 second switch and a switching-off position limit switch SL2, wherein the switching-off relay KM2 coil and the electrified delay time relay KT2 coil are connected in parallel and then connected in series with the switching-on relay KM1 second switch and the switching-off position limit switch SL 2.
On the basis of the technical scheme, the operating branch comprises a remote/local switch SA1, a local operating branch and a remote operating branch, the remote/local switch SA1 is in movable contact with the input ends of the local operating branch and the remote operating branch, the output end of the local operating branch is respectively connected with the input end of the closing branch and the input end of the opening branch, and the output end of the remote operating branch is respectively connected with the input end of the closing branch and the input end of the opening branch.
On the basis of the technical scheme, the local operation branch comprises an opening button SB2 and a closing button SB1, the input ends of the opening button SB2 and the closing button SB1 are in movable contact with a 'distant/local' switch SA1, the output end of the opening button SB2 is connected with the input end of the opening branch, and the output end of the closing button SB1 is connected with the closing branch.
On the basis of the technical scheme, the remote operation branch comprises a first LCU control switch D0 and a second LCU control switch D1, the input ends of the first LCU control switch D0 and the second LCU control switch D1 are in movable contact with a remote/local switch SA1, the output end of the first LCU control switch D0 is connected with the input end of the closing branch, and the output end of the second LCU control switch D1 is connected with the input end of the opening branch.
On the basis of the above technical solution, the operating branch further comprises a manually operated lockout switch SL3 connected in series with the "remote/local" switch SA 1.
On the basis of the technical scheme, the self-sustaining branch road includes the first switch of combined floodgate relay KM1 and the first switch of separating brake relay KM2, the input of the first switch of combined floodgate relay KM1 and the first switch of separating brake relay KM2 is connected with the live wire end through the circular telegram time delay relay KT1 switch and the circular telegram time delay relay KT2 switch that establish ties respectively, the output and the branch road of combined floodgate relay KM1 first switch are connected, the output and the input of the branch road of separating brake relay KM2 first switch are connected.
On the basis of the technical scheme, a stop button SB3 is also connected in series with the fire wire end.
The stop button SB3, the power-on delay time relay KT1 switch, the power-on delay time relay KT2 switch, the second switch of the opening relay KM2, the second switch of the closing relay KM1, the closing position limit switch SL1, the opening position limit switch SL2 and the manual operation locking switch SL3 are normally closed.
The opening button SB2, the closing button SB1, the first LCU control switch D0, the second LCU control switch D1, the first switch of the closing relay KM1 and the first switch of the opening relay KM2 are normally open.
The electrified delay time relay KT1 is electrified for 90s to act, and the control loop is automatically reset through the delay disconnection of the electrified delay time relay KT1 switch and the electrified delay time relay KT2 switch.
The principle of the utility model explains:
when the switch is normally operated, the switch of the power-on time delay relay KT1 and the switch of the power-on time delay relay KT2 are in a closed state, the remote/local switch SA1 selects remote or local operation, after an operation order is sent, the power-on time delay relay KT1 (the power-on time delay relay KT2) is excited and starts timing, the closing position limit switch SL1 (the opening position limit switch SL2) acts after the isolating switch acts in place, the closing position limit switch SL1 (the opening position limit switch SL2) is disconnected, and a control loop is reset. If the actual action of the isolating switch is not caused by a maintenance test or a motor fault, the power-on delay time relay KT1 switch (the power-on delay time relay KT2 switch) is switched off after 90 seconds to disconnect the control loop, so that the control loop is automatically reset, and the misoperation of the isolating switch is effectively prevented.
The utility model has the advantages that:
the utility model discloses increase two circular telegram delay time relays in control circuit, can realize that isolator control circuit time delay is automatic to be reset, separate switch malfunction and operation maloperation when effectively preventing to throw in motor power supply behind the maintenance test, prevent the maloperation that causes such as power failure, drive mechanism trouble appear when the operation, prevent that control circuit from exciting for a long time, burning out electrical component, increased equipment operational reliability.
Drawings
Fig. 1 is a circuit schematic of an embodiment of the invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example (b):
as shown in fig. 1, the electric disconnecting switch control circuit of this embodiment includes an energization delay time relay KT1 switch, an energization delay time relay KT2 switch, an operation branch, a self-holding branch, a closing branch and an opening branch.
Wherein, circular telegram time delay relay KT1 switch and circular telegram time delay relay KT2 switch are established ties at the live wire terminal, the input of operation branch road and self-sustaining branch road is connected with the live wire terminal through circular telegram time delay relay KT1 switch and circular telegram time delay relay KT2 switch of establishing ties, the output of operation branch road is connected with the input of combined floodgate branch road and the input of separating brake branch road respectively, the output of self-sustaining branch road is connected with the input of combined floodgate branch road and the input of separating brake branch road respectively, the output of combined floodgate branch road and the output of separating brake branch road are connected at the zero line terminal.
The operation branch comprises a remote/local switch SA1, a local operation branch and a remote operation branch, wherein the remote/local switch SA1 is in movable contact with the input ends of the local operation branch and the remote operation branch, the output end of the local operation branch is respectively connected with the input end of the closing branch and the input end of the opening branch, and the output end of the remote operation branch is respectively connected with the input end of the closing branch and the input end of the opening branch.
The local operation branch comprises an opening button SB2 and a closing button SB1, the input ends of the opening button SB2 and the closing button SB1 are in movable contact with a 'remote/local' switch SA1, the output end of the opening button SB2 is connected with the input end of the opening branch, and the output end of the closing button SB1 is connected with the closing branch.
The remote operation branch comprises a first LCU control switch D0 and a second LCU control switch D1, the input ends of the first LCU control switch D0 and the second LCU control switch D1 are in movable contact with a remote/local switch SA1, the output end of the first LCU control switch D0 is connected with the input end of the closing branch, and the output end of the second LCU control switch D1 is connected with the input end of the opening branch.
The self-sustaining branch road includes the first switch of combined floodgate relay KM1 and the first switch of separating brake relay KM2, and the input of the first switch of combined floodgate relay KM1 and the first switch of separating brake relay KM2 is connected with the live wire terminal through the circular telegram time delay relay KT1 switch and the circular telegram time delay relay KT2 switch that establish ties respectively, and the output of the first switch of combined floodgate relay KM1 is connected with the input of combined floodgate branch road, and the output of the first switch of separating brake relay KM2 is connected with the input of separating brake branch road.
The switching-on branch comprises a switching-on relay KM1 coil, an electrifying delay time relay KT1 coil, a second switch of a switching-off relay KM2 and a switching-on position limit switch SL 1. The coil of the closing relay KM1 and the coil of the electrified time delay relay KT1 are connected in parallel and then are connected in series with the second switch of the opening relay KM2 and the closing position limit switch SL 1.
The opening branch comprises an opening relay KM2 coil, an electrifying delay time relay KT2 coil, a closing relay KM1 second switch and an opening position limit switch SL2, wherein the opening relay KM2 coil and the electrifying delay time relay KT2 coil are connected in parallel and then connected in series with the closing relay KM1 second switch and the opening position limit switch SL 2.
The line end is also connected in series with a stop button SB 3.
The operating branch also includes a manually operated lockout switch SL3 in series with the "remote/local" switch SA 1.
The stop button SB3, the power-on delay time relay KT1 switch, the power-on delay time relay KT2 switch, the second switch of the opening relay KM2, the second switch of the closing relay KM1, the closing position limit switch SL1, the opening position limit switch SL2 and the manual operation locking switch SL3 are normally closed.
The opening button SB2, the closing button SB1, the first LCU control switch D0, the second LCU control switch D1, the first switch of the closing relay KM1 and the first switch of the opening relay KM2 are normally open.
The electrified delay time relay KT1 is electrified for 90s to act, and the control loop is automatically reset through the delay disconnection of the electrified delay time relay KT1 switch and the electrified delay time relay KT2 switch.
The principle of the utility model explains:
when the switch is normally operated, the switch of the power-on time delay relay KT1 and the switch of the power-on time delay relay KT2 are in a closed state, the remote/local switch SA1 selects remote or local operation, after an operation order is sent, the power-on time delay relay KT1 (the power-on time delay relay KT2) is excited and starts timing, the closing position limit switch SL1 (the opening position limit switch SL2) acts after the isolating switch acts in place, the closing position limit switch SL1 (the opening position limit switch SL2) is disconnected, and a control loop is reset. If the actual action of the isolating switch is not caused by a maintenance test or a motor fault, the power-on delay time relay KT1 switch (the power-on delay time relay KT2 switch) is switched off after 90 seconds to disconnect the control loop, so that the control loop is automatically reset, and the misoperation of the isolating switch is effectively prevented.
Through experiments, the actual action time of the isolating switch is about 5 seconds, and the delay time relay 90s can effectively avoid the actual action time of the isolating switch.
Taking the remote operation as an example:
1. and (5) remotely closing the switch.
The isolating switch is in an open state, the power-on delay time relay KT1 switch and the power-on delay time relay KT2 switch are in a closed state, the 'far/local' change-over switch SA1 is switched to a 'far position', the LCU controls the switch D0 to be closed after switching-on is performed, the coil of the switch-on relay KM1 is excited, the first switch is self-maintained through the switch-on relay KM1, the isolating switch is switched on, the contactor starts to be switched on, the power-on delay time relay KT1 starts to time, the switch-on position limit switch SL1 operates after the isolating switch operates in place, the switch-on position limit switch SL1 is switched off, and the control loop returns. When a motor power supply of the isolating switch is not put into a maintenance test or the isolating switch does not actually act due to power supply failure, transmission mechanism failure and the like, the switching-on position limit switch SL1 cannot be switched off, and the switch KT1 is switched off after 90 seconds to disconnect a control loop, so that the isolating switch is prevented from misoperation.
2. And (5) remotely opening the gate.
The isolating switch is in a closing state, the power-on delay time relay KT1 switch and the power-on delay time relay KT2 switch are in a closing state, the 'far/local' change-over switch SA1 is switched to be far, the LCU controls the switch D1 to be closed after the switch-on command is sent out, the coil of the disconnecting relay KM2 is excited, the isolating switch is self-maintained through the first switch of the disconnecting relay KM2, the disconnecting switch is closed, the contactor starts to be closed, the power-on delay time relay KT2 starts to time, the disconnecting position limit switch SL2 operates after the isolating switch operates in place, the disconnecting position limit switch SL2 is disconnected, and the control loop is reset. When a motor power supply of the isolating switch is not put into a maintenance test or the isolating switch does not actually act due to power supply failure, transmission mechanism failure and the like, the opening position limit switch SL2 cannot be disconnected, and the control loop is disconnected after 90 seconds when the switch is switched off by the electrified delay time relay KT2, so that the isolating switch is prevented from false operation.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (7)
1. Electronic isolator control circuit, its characterized in that: the circuit comprises an electrified delay time relay KT1 switch, an electrified delay time relay KT2 switch, an operation branch, a self-holding branch, a closing branch and a separating branch;
the input ends of the operating branch and the self-holding branch are connected with a live wire end through an electrified delay time relay KT1 switch and an electrified delay time relay KT2 switch which are connected in series, the output end of the operating branch is respectively connected with the input end of a closing branch and the input end of an opening branch, the output end of the self-holding branch is respectively connected with the input end of a closing branch and the input end of an opening branch, and the output end of the closing branch and the output end of the opening branch are connected with the neutral wire end;
the switching-on branch comprises a switching-on relay KM1 coil, an electrifying delay time relay KT1 coil, a switching-off relay KM2 second switch and a switching-on position limit switch SL1, wherein the switching-on relay KM1 coil and the electrifying delay time relay KT1 coil are connected in parallel and then connected in series with the switching-off relay KM2 second switch and the switching-on position limit switch SL 1;
the switching-off branch comprises a switching-off relay KM2 coil, an electrified delay time relay KT2 coil, a switching-on relay KM1 second switch and a switching-off position limit switch SL2, wherein the switching-off relay KM2 coil and the electrified delay time relay KT2 coil are connected in parallel and then connected in series with the switching-on relay KM1 second switch and the switching-off position limit switch SL 2.
2. The electrical disconnect switch control circuit of claim 1, wherein: the operation branch comprises a remote/local switch SA1, a local operation branch and a remote operation branch, wherein the remote/local switch SA1 is in movable contact with the input ends of the local operation branch and the remote operation branch, the output end of the local operation branch is respectively connected with the input end of the closing branch and the input end of the opening branch, and the output end of the remote operation branch is respectively connected with the input end of the closing branch and the input end of the opening branch.
3. The electrical disconnect switch control circuit of claim 2, wherein: the local operation branch comprises an opening button SB2 and a closing button SB1, the input ends of the opening button SB2 and the closing button SB1 are in movable contact with a 'distant/local' switch SA1, the output end of the opening button SB2 is connected with the input end of the opening branch, and the output end of the closing button SB1 is connected with the closing branch.
4. The electrical disconnect switch control circuit of claim 2, wherein: the remote operation branch comprises a first LCU control switch D0 and a second LCU control switch D1, the input ends of the first LCU control switch D0 and the second LCU control switch D1 are in movable contact with a remote/local switch SA1, the output end of the first LCU control switch D0 is connected with the input end of the closing branch, and the output end of the second LCU control switch D1 is connected with the input end of the opening branch.
5. The electrical disconnect switch control circuit of claim 2, wherein: the operating branch also includes a manually operated lockout switch SL3 in series with the "remote/local" switch SA 1.
6. The electrical disconnect switch control circuit of claim 1, wherein: the self-sustaining branch road includes the first switch of combined floodgate relay KM1 and the first switch of separating brake relay KM2, and the input of the first switch of combined floodgate relay KM1 and the first switch of separating brake relay KM2 is connected with the live wire end through the circular telegram time delay relay KT1 switch and circular telegram time delay relay KT2 switch that establish ties respectively, and the output and the combined floodgate branch road of the first switch of combined floodgate relay KM1 are connected, and the output of the first switch of separating brake relay KM2 is connected with the input of separating brake branch road.
7. The electrical disconnect switch control circuit of claim 1, wherein: the line end is also connected in series with a stop button SB 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920937535.XU CN209881379U (en) | 2019-06-20 | 2019-06-20 | Control loop of electric isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920937535.XU CN209881379U (en) | 2019-06-20 | 2019-06-20 | Control loop of electric isolating switch |
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| Publication Number | Publication Date |
|---|---|
| CN209881379U true CN209881379U (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920937535.XU Active CN209881379U (en) | 2019-06-20 | 2019-06-20 | Control loop of electric isolating switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113160491A (en) * | 2021-04-07 | 2021-07-23 | 威胜电气有限公司 | Primary and secondary integration high-voltage charge control switching-on and switching-off control method |
-
2019
- 2019-06-20 CN CN201920937535.XU patent/CN209881379U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113160491A (en) * | 2021-04-07 | 2021-07-23 | 威胜电气有限公司 | Primary and secondary integration high-voltage charge control switching-on and switching-off control method |
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Address after: 614000 No.99 Gongdian Avenue, Shawan District, Leshan City, Sichuan Province Patentee after: Gongzui Hydropower Station of Guoneng Dadu River Basin Hydropower Development Co.,Ltd. Address before: 614000 No.99 Gongdian Avenue, Shawan District, Leshan City, Sichuan Province Patentee before: GONGZUI HYDROELECTRIC POWER GENERAL FACTORY OF CHINA GUODIAN DADU RIVER BASIN HYDROPOWER DEVELOPMENT Co.,Ltd. |