CN203192640U - Interlocking device of high-voltage stationary cabinet - Google Patents
Interlocking device of high-voltage stationary cabinet Download PDFInfo
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- CN203192640U CN203192640U CN 201320107520 CN201320107520U CN203192640U CN 203192640 U CN203192640 U CN 203192640U CN 201320107520 CN201320107520 CN 201320107520 CN 201320107520 U CN201320107520 U CN 201320107520U CN 203192640 U CN203192640 U CN 203192640U
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Abstract
The utility model discloses an interlocking device of a high-voltage stationary cabinet. The interlocking device comprises a stroke switch and a control power supply. A breaker comprises a closing coil, an opening coil, a closing button, an opening button, an auxiliary switch, and a closing lockout electromagnet. An anode of the control power supply, one normally-closed contact of the stroke switch, the closing button, a normally closed contact of the auxiliary switch, the closing coil, and a cathode of the control power supply are connected sequentially, thereby forming a closing loop. The anode of the control power supply, the other normally-closed contact of the stroke switch, the closing lockout electromagnet, and the cathode of the control power supply are sequentially connected, thereby forming a closing lockout loop. The anode of the control power supply, a normally opened contact of the stroke switch, a normally opened contact of the auxiliary switch, the opening coil, and the cathode of the control power supply are sequentially connected, and the opening button is connected in parallel between the two ends of the normally opened contact of the stroke switch, thereby forming a tripping loop. The interlocking device of the high-voltage stationary cabinet is capable of realizing the electrical interlocking between an isolation switch and the breaker, effectively preventing the harm of misoperation, and enabling operation to be safe and reliable.
Description
Technical field
The utility model relates to the high pressure stationary cabinet, is specifically related to a kind of interlock of high pressure stationary cabinet.
Background technology
Present high pressure stationary cabinet (or claim fixed high-voltage switch cubicle) must place the disjunction locked position of coupler with operating mechanism earlier if will send the electricity operation, earthed switch separately, the normal divide-shut brake of isolating switch at this moment.Because the normal divide-shut brake of isolating switch this moment, namely this isolating switch not and circuit breaker realize interlocking, will cause occurring following situation: at this moment operating personnel elder generation before closing isolating switch can cause the charged isolating switch that closes with breaker closing; Perhaps will have a power failure when operation, operating personnel do not have at circuit breaker to have opened isolating switch under the situation of separating brake.Above situation has all been violated " five is anti-" requirement, and such misoperation stays the hidden danger that is absolutely unsafe for switchgear and operations staff.
The utility model content
Technical problem to be solved in the utility model just provides a kind of interlock of high pressure stationary cabinet, realizes electrical interlock between isolating switch and the circuit breaker, effectively avoids the harm of misoperation, makes handling safety reliable.
For solving the problems of the technologies described above, the utility model is achieved through the following technical solutions: a kind of interlock of high pressure stationary cabinet, be installed between the circuit breaker and isolating switch in the high pressure stationary cabinet, described interlock comprises travel switch and control power supply, and the contact of the trip switch is relative with the operating mechanism axis of guide of isolating switch; Described circuit breaker has closing coil, switching winding, switch knob, opening button, auxiliary switch and is used for the closing locking electromagnet of control switch knob, described auxiliary switch has normally closed touching and normally opened contact, and described travel switch has two normally-closed contacts and a normally opened contact; The negative pole of the normally-closed contact of one of them normally-closed contact of the positive pole of described control power supply, travel switch, switch knob, auxiliary switch, closing coil and control power supply links to each other successively and is configured for the closing circuit of breaker closing; The negative pole of another normally-closed contact of the positive pole of described control power supply, travel switch, closing locking electromagnet and control power supply links to each other successively and is configured for controlling the closing locking circuit of breaker closing locking; The normally opened contact of the positive pole of described control power supply, the normally opened contact of travel switch, auxiliary switch, switching winding and the negative pole of control power supply link to each other successively, described opening button is connected to the normally opened contact two ends of travel switch, is configured for the trip(ping) circuit of circuit breaker trip.
Travel switch described in the utility model is fixed in through mounting panel on the cabinet door of high pressure stationary cabinet of circuit breaker one side, is beneficial to the firm formation position relative with the axis of guide of the operating mechanism of isolating switch.
Compared with prior art, the utility model technology has following beneficial effect:
Interlock of the present utility model has formed the anti-misoperation function by the cooperation of each switch and coil, electromagnet, reaches in transmission process with this, close isolating switch before, circuit breaker must separating brake; In the power failure process, before branch was kept apart the pass, the purpose of the necessary separating brake of circuit breaker had been avoided misoperation, makes deciliter handling safety of isolating switch reliable.
Description of drawings
Fig. 1 is structural front view of the present utility model;
Fig. 2 is the A place enlarged drawing of Fig. 1;
Fig. 3 is structure rearview of the present utility model;
Fig. 4 for the utility model when circuit breaker is in "on" position, each contact, coil, button and electromagnet be electrically connected schematic diagram;
Fig. 5 for the utility model when circuit breaker is in gate-dividing state, each contact, coil, button and electromagnet be electrically connected schematic diagram.
Embodiment
Below in conjunction with specific embodiment the utility model is further set forth.
The interlock of a kind of high pressure stationary cabinet shown in Fig. 1～3 is installed between the circuit breaker 5 and isolating switch in the high pressure stationary cabinet 4, and interlock comprises travel switch 7 and control power supply.Have maintenance, work and three switching positions of disjunction locking on the operating mechanism 1 of isolating switch, rotate switching controls by operating grip 2.When needs divide-shut brake isolating switch, need operating grip 2 is turned to the disjunction locked position of coupler.Travel switch 7 is fixed in through mounting panel 6 on the cabinet door of high pressure stationary cabinet of circuit breaker one side, adopting model is the travel switch of FK-I-33, have two normally-closed contact LXK1, LXK2 and a normally opened contact LXK3, the contact of the trip switch 7 is relative with the operating mechanism of isolating switch 1 axis of guide 8.When the operating grip 2 of operating mechanism 1 when three switching positions are rotated, can drive the axis of guide 8 motions, when operating grip 2 dials to the disjunction locked position of coupler, move the contact that triggers travel switch 7 with driving the axis of guide 8, make travel switch 7 each contact switching state.
Shown in Fig. 4～5, circuit breaker 5 has closing coil HQ, switching winding TQ, switch knob HA, opening button TA, auxiliary switch and is used for the closing locking electromagnet Y1 of control switch knob HA, and auxiliary switch has normally closed tactile DL1 and normally opened contact DL2.Normally-closed contact DL1, the closing coil HQ of the positive pole of control power supply, one of them normally-closed contact LXK1, the switch knob HA of travel switch 7, auxiliary switch links to each other successively with the negative pole of control power supply and constitutes the closing circuit of interlock; The negative pole of the positive pole of control power supply, another normally-closed contact LXK2, the closing locking electromagnet Y1 of travel switch and control power supply links to each other successively and constitutes the closing locking circuit of interlock, after operating grip 2 is turned to the disjunction locked position of coupler, another normally-closed contact LXK2 of travel switch often switches to and opens, namely disconnect, make closing locking electromagnet Y1 dead electricity, the closing locking circuit akinesia, thus keep closing circuit to disconnect cut-off breaker; Normally opened contact DL2, the switching winding TQ of the positive pole of control power supply, the normally opened contact LXK3 of travel switch, auxiliary switch links to each other successively with the negative pole of control power supply, opening button TA is connected to the normally opened contact LXK3 two ends of travel switch, constitutes the trip(ping) circuit of interlock.
The operation principle of this interlock is:
As shown in Figure 4, when sending electricity, suppose that circuit breaker 5 is in "on" position, this moment, the normally-closed contact DL1 of auxiliary switch was off-state, and the normally opened contact DL2 of auxiliary switch is closure state; When needs combined floodgate isolating switch, after operating grip 2 pushed the disjunction locked position of coupler, the normally opened contact LXK3 of triggering travel switch switched to normally closed, and switching winding TQ action this moment makes circuit breaker 5 tripping operations, and the state behind circuit breaker 5 separating brakes as shown in Figure 5;
After operating grip 2 pushes the disjunction locked position of coupler, owing to all often switching to, two normally-closed contact LXK1, LXK2 having triggered travel switch simultaneously open, and the normally-closed contact DL1 of auxiliary switch also disconnects, even so manually press switch knob HA, the circuit breaker 5 that also can't close a floodgate prevents that on-load from closing isolating switch.
When having a power failure, if not by opening button TA elder generation separating brake circuit breaker, and operating grip 2 is pushed the disjunction locked position of coupler when carrying out the breaking-closing operating of isolating switch, as shown in Figure 4, because the normally opened contact LXK3 of travel switch switches to normally closed, so by trip(ping) circuit, circuit breaker 5 is directly tripped, prevents on-load separating brake isolating switch.
Execution mode of the present utility model is not limited thereto, according to foregoing, ordinary skill knowledge and customary means according to this area, do not breaking away under the above-mentioned basic fundamental thought of the utility model prerequisite, equivalent modifications, replacement or change that the utility model can also be made other various ways all can realize the utility model purpose.
Claims (2)
1. the interlock of a high pressure stationary cabinet, be installed between the circuit breaker and isolating switch in the high pressure stationary cabinet, it is characterized in that: described interlock comprises travel switch and control power supply, and the contact of the trip switch is relative with the operating mechanism axis of guide of isolating switch; Described circuit breaker has closing coil, switching winding, switch knob, opening button, auxiliary switch and is used for the closing locking electromagnet of control switch knob, described auxiliary switch has normally closed touching and normally opened contact, and described travel switch has two normally-closed contacts and a normally opened contact; The negative pole of the normally-closed contact of one of them normally-closed contact of the positive pole of described control power supply, travel switch, switch knob, auxiliary switch, closing coil and control power supply links to each other successively and is configured for the closing circuit of breaker closing; The negative pole of another normally-closed contact of the positive pole of described control power supply, travel switch, closing locking electromagnet and control power supply links to each other successively and is configured for controlling the closing locking circuit of breaker closing locking; The normally opened contact of the positive pole of described control power supply, the normally opened contact of travel switch, auxiliary switch, switching winding and the negative pole of control power supply link to each other successively, described opening button is connected to the normally opened contact two ends of travel switch, is configured for the trip(ping) circuit of circuit breaker trip.
2. the interlock of high pressure stationary cabinet according to claim 1 is characterized in that: described travel switch is fixed in through mounting panel on the cabinet door of high pressure stationary cabinet of circuit breaker one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320107520 CN203192640U (en) | 2013-03-08 | 2013-03-08 | Interlocking device of high-voltage stationary cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320107520 CN203192640U (en) | 2013-03-08 | 2013-03-08 | Interlocking device of high-voltage stationary cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203192640U true CN203192640U (en) | 2013-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320107520 Expired - Lifetime CN203192640U (en) | 2013-03-08 | 2013-03-08 | Interlocking device of high-voltage stationary cabinet |
Country Status (1)
| Country | Link |
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| CN (1) | CN203192640U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157499A (en) * | 2014-08-15 | 2014-11-19 | 南京双京电器集团有限公司 | Novel insulation phase-change switch |
| CN108631162A (en) * | 2018-06-26 | 2018-10-09 | 河南森源电气股份有限公司 | Prevent maintenance mistiming from closing the control circuit and transformer substation system of high side switch |
| CN108807039A (en) * | 2018-07-25 | 2018-11-13 | 中国船舶重工集团公司第七0四研究所 | Medium Voltage Switchgear cable vault cabinet door interlock |
| CN112184975A (en) * | 2020-09-27 | 2021-01-05 | 江苏思源赫兹互感器有限公司 | High-voltage laboratory safety grounding and entrance guard interlocking control system |
| CN112542340A (en) * | 2020-11-09 | 2021-03-23 | 国网福建省电力有限公司检修分公司 | Control panel of isolating switch |
| CN114023590A (en) * | 2021-10-28 | 2022-02-08 | 新风光电子科技股份有限公司 | Locking device for isolating switch |
-
2013
- 2013-03-08 CN CN 201320107520 patent/CN203192640U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157499A (en) * | 2014-08-15 | 2014-11-19 | 南京双京电器集团有限公司 | Novel insulation phase-change switch |
| CN108631162A (en) * | 2018-06-26 | 2018-10-09 | 河南森源电气股份有限公司 | Prevent maintenance mistiming from closing the control circuit and transformer substation system of high side switch |
| CN108807039A (en) * | 2018-07-25 | 2018-11-13 | 中国船舶重工集团公司第七0四研究所 | Medium Voltage Switchgear cable vault cabinet door interlock |
| CN108807039B (en) * | 2018-07-25 | 2019-08-30 | 中国船舶重工集团公司第七0四研究所 | Medium Voltage Switchgear cable vault cabinet door interlock |
| CN112184975A (en) * | 2020-09-27 | 2021-01-05 | 江苏思源赫兹互感器有限公司 | High-voltage laboratory safety grounding and entrance guard interlocking control system |
| CN112542340A (en) * | 2020-11-09 | 2021-03-23 | 国网福建省电力有限公司检修分公司 | Control panel of isolating switch |
| CN112542340B (en) * | 2020-11-09 | 2023-08-18 | 国网福建省电力有限公司检修分公司 | Isolating switch control board |
| CN114023590A (en) * | 2021-10-28 | 2022-02-08 | 新风光电子科技股份有限公司 | Locking device for isolating switch |
| CN114023590B (en) * | 2021-10-28 | 2023-07-07 | 新风光电子科技股份有限公司 | Isolating switch locking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130911 |
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| CX01 | Expiry of patent term |