CN110993401A - Interlocking device of high-voltage switch equipment - Google Patents
Interlocking device of high-voltage switch equipment Download PDFInfo
- Publication number
- CN110993401A CN110993401A CN201911266259.XA CN201911266259A CN110993401A CN 110993401 A CN110993401 A CN 110993401A CN 201911266259 A CN201911266259 A CN 201911266259A CN 110993401 A CN110993401 A CN 110993401A
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- CN
- China
- Prior art keywords
- interlocking plate
- shaft
- isolation
- circuit breaker
- interlocking
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses an interlocking device of high-voltage switch equipment, which comprises the following components: the interlocking plate driving mechanism is connected to a circuit breaker main shaft, the interlocking plate is provided with a baffle, the interlocking plate driving mechanism is used for driving the interlocking plate to slide relative to the circuit breaker main shaft, and the indicating interlocking plate is connected to an isolating switch main shaft; when the isolation mechanism is in a closing state, the indication interlocking plate shields the grounding shaft; when the isolation mechanism is in a switching-off state, the indication interlocking plate is arranged between the isolation shaft and the grounding shaft; when the isolation mechanism is in a grounding state, the interlocking plate is indicated to shield the isolation shaft; when the main shaft of the circuit breaker is in a closing state, the baffle shields the isolating shaft; when the main shaft of the circuit breaker is in a brake-separating state, the baffle is separated from the isolation shaft. The invention can realize the requirements of 'preventing grounding power transmission', 'preventing electrified connection and disconnection of a grounding switch' and 'preventing electrified disconnection and disconnection of a disconnecting switch' in 'five-prevention' through a very simple mechanism.
Description
Technical Field
The invention relates to the technical field of high-voltage switch equipment, in particular to an interlocking device of the high-voltage switch equipment.
Background
In order to ensure personal safety during use of high-voltage switchgear, national standards require anti-misoperation devices to be installed on the high-voltage switchgear which may cause misoperation, namely, the high-voltage switchgear has a five-prevention function, and is one of important measures for electric power safety. The five prevention is to prevent the circuit breaker from being opened and closed by mistake; the isolating switch is prevented from being switched on and off under the condition of load, the grounding switch is prevented from being switched on under the condition of electrification, grounding power transmission is prevented, and the phenomenon that the isolating switch is mistakenly switched into an electrified interval is prevented. In the prior art, the five-prevention interlocking structure is various, and the defects of complex structure, inconvenient operation and low reliability exist mostly.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the interlocking device of the high-voltage switch equipment, which solves the problems of complex structure, inconvenience in operation and low reliability of the high-voltage switch equipment in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an interlock device for high-voltage switchgear, characterized in that: the interlocking plate driving mechanism is connected to a circuit breaker main shaft, a baffle is arranged on the interlocking plate, the interlocking plate driving mechanism is used for driving the interlocking plate to slide relative to the circuit breaker main shaft, and the indicating interlocking plate is connected to an isolating switch main shaft;
when the isolation mechanism is in a closing state, the indication interlocking plate shields the grounding shaft;
when the isolation mechanism is in a switching-off state, the indication interlocking plate is arranged between the isolation shaft and the grounding shaft; when the isolation mechanism is in a grounding state, the interlocking plate shields the isolation shaft;
when the main shaft of the circuit breaker is in a closing state, the baffle shields the isolating shaft; when the main shaft of the circuit breaker is in a brake-separating state, the baffle is separated from the isolation shaft.
As an optimized solution of the present invention, the interlock device for high voltage switchgear comprises: the interlocking plate driving mechanism is a cam, when the baffle shields the isolating shaft, the interlocking plate is connected to the position where the diameter of the cam is larger, and when the baffle is separated from the isolating shaft, the interlocking plate is connected to the position where the diameter of the cam is smaller.
As an optimized solution of the present invention, the interlock device for high voltage switchgear comprises: the interlocking plate is connected to a second tension spring, and the second tension spring is used for driving the interlocking plate to be attached to the side portion of the cam.
As an optimized solution of the present invention, the interlock device for high voltage switchgear comprises: the cam connecting end of the interlocking plate is provided with a bent plate, and the bent plate is connected to the side portion of the cam.
As an optimized solution of the present invention, the interlock device for high voltage switchgear comprises: the interlocking plate is provided with at least two guide grooves, and the guide grooves are connected to the supporting columns.
As an optimized solution of the present invention, the interlock device for high voltage switchgear comprises: the indication interlocking plate is provided with an indication device for displaying the state of the disconnecting switch.
As an optimized solution of the present invention, the interlock device for high voltage switchgear comprises: the indicating device is an indicating arc end, and the indicating arc end is provided with an isolating switch indicating symbol.
As an optimized solution of the present invention, the interlock device for high voltage switchgear comprises: the counter further comprises a counter, and the trigger end of the counter is connected to the cam.
The invention achieves the following beneficial effects:
compared with the prior art, the invention can meet the requirements of preventing grounding power transmission, preventing electrified connection and disconnection of a grounding switch and preventing loaded disconnection and disconnection of a disconnecting switch in five-prevention.
The invention has simple structure, and the main components of the whole device only comprise the cam, the interlocking plate and the indicating interlocking plate. Because the parts are fewer, the operation of the invention is simpler and the operation is easier.
Drawings
Fig. 1 is a front view of the closing/opening switch of the circuit breaker of the embodiment;
fig. 2 is a left side view of the closing/opening of the circuit breaker of the present embodiment;
fig. 3 is a front view of the circuit breaker on/off switch of the embodiment;
fig. 4 is a front view (installation state) of the circuit breaker opening/closing switch of the present embodiment;
fig. 5 is a separating/isolating ground elevation view of the circuit breaker of the present embodiment;
the meaning of the reference numerals: 1-mechanism front plate; 2-a breaker main shaft; 3-a cam; 4-an interlock plate; 4.1-guide groove; 4.3-baffle; 4.4-bending the plate; 5-a support column; 7-a first tension spring; 8-a second tension spring; 9-isolating the shaft; 10-isolating switch main shaft; 11-indicating interlocking plate; 11.1-indicating the arc end; 12-a ground shaft; 13.1-isolating switch; 13.2-isolation mechanism; 14.1-circuit breaker; 14.2-circuit breaker mechanism; 15-isolating switch indication window; 16-a counter.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the prior art, a circuit breaker 14.1, a circuit breaker mechanism 14.2, a disconnecting switch 13.1 and a disconnecting mechanism 13.2 are usually used in a matched manner, an arc extinguishing chamber is arranged in the circuit breaker 14.1, and the circuit breaker 14.1 can be normally switched on and off under a load, and the disconnecting switch 13.1 cannot be switched off under the load condition because of no arc extinguishing device. The disconnector 13.1 is also provided with a grounding function and is normally used during maintenance.
The main loop operation of the isolating switch 13.1 is realized by driving an isolating switch main shaft 10 through a rotating isolating shaft 9, the grounding operation is realized by driving the isolating switch main shaft 10 through a rotating grounding shaft 12, in practical application, the isolating switch main shaft 10 and a circuit breaker main shaft 2 are preferably arranged in parallel and penetrate through a mechanism front plate 1 for use, and a certain interlocking mechanism is arranged on the mechanism front plate 1 and used for avoiding the misoperation of the isolating mechanism 13.2 and the circuit breaker mechanism 14.2.
As shown in fig. 1 to 5: the embodiment discloses an interlocking device of high-voltage switch equipment, which comprises an interlocking plate driving mechanism, an interlocking plate 4 and an indicating interlocking plate 11, wherein the interlocking plate driving mechanism is connected to a circuit breaker spindle 2, the interlocking plate 4 is provided with a baffle 4.3, the interlocking plate driving mechanism is used for driving the interlocking plate 4 to slide relative to the circuit breaker spindle 2, at least two guide grooves 4.1 can be formed in the interlocking plate 4, a support pillar 5 is arranged on a mechanism front plate 1, one end of the support pillar 5 is large and the other end of the support pillar is small, the end of the small pillar penetrates through a guide long groove 4.1 and fixes the interlocking plate 4 through a fastener (such as a baffle, a pin or a nut), and the interlocking plate 4 slides relative to the circuit breaker spindle 2.
The indication interlocking plate 11 is connected to the main isolating switch shaft 10 and rotates synchronously with the main isolating switch shaft 10.
The interlocking plate driving mechanism of the embodiment is the cam 3, the interlocking plate 4 is connected to a larger diameter of the cam 3 when the shutter 4.3 blocks the barrier shaft 9 (fig. 1), and the interlocking plate 4 is connected to a smaller diameter of the cam 3 when the shutter 4.3 is separated from the barrier shaft 9 (fig. 3, 4, 5). In order to increase the contact area of interlocking plate 4 and cam 3 (because interlocking plate 4 has a small thickness), it is preferable that this embodiment has bent plate 4.4 at the end of interlocking plate 4 connected to cam 3, and bent plate 4.4 is connected to the side of cam 3. When cam 3 rotates, it is necessary to ensure that interlocking plate 4 follows up, that is, to ensure that curved plate 4.4 is always attached to the side of cam 3, so interlocking plate 4 is connected to second tension spring 8, and second tension spring 8 is used for driving interlocking plate 4 to be attached to the side of cam 3, and one end of second tension spring 8 hooks interlocking plate 4, and the other end can be connected to one of support posts 5.
The indication interlocking plate 11 is provided with an indication arc end 11.1 for displaying the state of the disconnecting switch, and the indication arc end 11.1 is provided with characters or symbols of 'closing', 'opening', 'ground', which are respectively used for indicating the states of closing, opening and grounding. Be equipped with the panel on the high tension switchgear and cover circuit breaker mechanism 14.2, isolator 13.2 and interlock are whole, are equipped with isolator indicator window 15 on the panel, and for transparent visual, the state of current isolator 13.1 can be observed through this isolator indicator window, and when isolator 13.1 was in the combined floodgate state, isolator indicator window 15 aimed at and instructs "closing" word on the arc end 11.1. Similarly, when in the other two states, the corresponding characters can be observed only through the switch indication window 15.
The embodiment further comprises a counter 16, wherein an triggering end of the counter 16 is connected to the cam 3, the counter and the cam can be connected through a first tension spring 7, and when the cam 3 rotates, the counter 16 can be triggered through the first tension spring 7 for counting the working times of the circuit breaker 14.1.
As shown in fig. 1 and 2: when the circuit breaker 14.1 and the disconnector 13.1 are both in a closed state, in this state: the isolation switch 13.1 needs to be prevented from being separated with load, and meanwhile, the grounding operation needs to be prevented, in the state, the baffle 4.3 blocks the isolation shaft 9, and an operator cannot operate the isolation mechanism 13.2; at the same time, the indication interlocking plate 11 blocks the grounding shaft 12, and the operator cannot operate the grounding shaft 12. The five-prevention disconnecting switch and the grounding switch are prevented from being switched on and off under the condition of load.
As shown in fig. 3: when the circuit breaker 14.1 is in the open state and the disconnector 13.1 is in the closed state, in this state: the baffle 4.3 is separated from the isolation shaft 9, namely the isolation shaft 9 is not shielded, and the operation of opening the isolation mechanism 13.2 can be carried out; further, the indication interlock plate 11 blocks the ground shaft 12, and the grounding operation is disabled, thereby realizing a "grounding switch with prevention of live connection" in the "five-prevention" system.
As can be seen from the above description, when isolation mechanism 13.2 is in the closed state, no grounding operation can be performed regardless of the state of circuit breaker 14.1.
When the isolation mechanism 13.2 is in the ground state, usually in the maintenance state, the line cannot be closed and power supplied, as shown in fig. 5: in this state, the circuit breaker 14.1 is in the open state, and although the shutter 4.3 and the isolation shaft 9 are in the separated state, the indication interlocking plate 11 shields the isolation shaft 9, so that the isolation shaft 9 cannot be operated, the isolation mechanism 13.2 cannot be closed, and the "ground power transmission prevention" in the "five-prevention" is realized.
The embodiment also discloses an installation method of the interlocking device of the high-voltage switch equipment, which is shown in fig. 4: when the isolation mechanism 13.2 and the breaker mechanism 14.2 are both in the opening state, the isolation mechanism and the breaker mechanism are installed, firstly, the cam 3 is installed on the breaker spindle 2, then, the interlocking plate 4 is installed on the supporting column 5 through the guide groove 4.1, the interlocking plate 4 is fixed through a blocking clamp, a pin or a nut and can slide relative to the cam 3, and then, the tension spring two 8 is hung. Finally, the interlocking plate 11 is installed on the main shaft 10 of the isolating switch, and since the isolating mechanism 13.2 is in the opening state at the moment, the indicating window 15 of the isolating switch is aligned with the word 'opening' when the interlocking plate 11 is installed.
Compared with the prior art, the structure is simplified on the premise of realizing 'grounding power transmission prevention', 'electrified connection and grounding switch prevention' and 'electrified separation and isolation switch connection', reliability and stability of the five-prevention switch are improved due to the simplified structure, and the five-prevention switch is favorable for reducing fault rate.
The structure of the embodiment is simple, and the main components of the whole device only comprise the cam 3, the interlocking plate 4 and the indicating interlocking plate 11. Because spare part is less for the operation of this embodiment is simpler, relatively easy to get to the hand.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. An interlock device for high-voltage switchgear, characterized in that: the interlocking device comprises an interlocking plate driving mechanism, an interlocking plate (4) and an indicating interlocking plate (11), wherein the interlocking plate driving mechanism is connected to a circuit breaker main shaft (2), a baffle (4.3) is arranged on the interlocking plate (4), the interlocking plate driving mechanism is used for driving the interlocking plate (4) to slide relative to the circuit breaker main shaft (2), and the indicating interlocking plate (11) is connected to an isolating switch main shaft (10);
when the isolation mechanism (13.2) is in a closing state, the indication interlocking plate (11) shields the grounding shaft (12);
when the isolation mechanism (13.2) is in an opening state, the indication interlocking plate (11) is arranged between the isolation shaft (9) and the grounding shaft (12); when the isolation mechanism (13.2) is in a grounding state, the indication interlocking plate (11) shields the isolation shaft (9);
when the main shaft (2) of the circuit breaker is in a closing state, the baffle (4.3) shields the isolating shaft (9); when the main shaft (2) of the circuit breaker is in a brake-off state, the baffle (4.3) is separated from the isolation shaft (9).
2. A high voltage switchgear interlock device according to claim 1, characterized in that: the interlocking plate driving mechanism is a cam (3), when a baffle (4.3) shields the isolating shaft (9), the interlocking plate (4) is connected to the position where the diameter of the cam (3) is larger, and when the baffle (4.3) is separated from the isolating shaft (9), the interlocking plate (4) is connected to the position where the diameter of the cam (3) is smaller.
3. A high voltage switchgear interlock device according to claim 2, characterized in that: the interlocking plate (4) is connected to a second tension spring (8), and the second tension spring (8) is used for driving the interlocking plate (4) to be attached to the side portion of the cam (3).
4. A high voltage switchgear interlock device according to claim 2 or 3, characterized in that: the interlocking plate is characterized in that a bent plate (4.4) is arranged at the connecting end of the cam (3) of the interlocking plate (4), and the bent plate (4.4) is connected to the side part of the cam (3).
5. A high voltage switchgear interlock device according to claim 1, characterized in that: interlocking plate (4) are equipped with and are no less than two guide ways (4.1), guide way (4.1) are connected in support column (5).
6. A high voltage switchgear interlock device according to claim 1, characterized in that: the indication interlocking plate (11) is provided with an indication device for displaying the state of the disconnecting switch.
7. A high voltage switchgear interlock device according to claim 6, characterized in that: the indicating device is an indicating arc-shaped end (11.1), and the indicating arc-shaped end (11.1) is provided with an indicating sign of the disconnecting switch.
8. A high voltage switchgear interlock device according to claim 1, characterized in that: the counter is characterized by further comprising a counter (16), wherein the triggering end of the counter (16) is connected to the cam (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911266259.XA CN110993401A (en) | 2019-12-11 | 2019-12-11 | Interlocking device of high-voltage switch equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911266259.XA CN110993401A (en) | 2019-12-11 | 2019-12-11 | Interlocking device of high-voltage switch equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110993401A true CN110993401A (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911266259.XA Pending CN110993401A (en) | 2019-12-11 | 2019-12-11 | Interlocking device of high-voltage switch equipment |
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| CN (1) | CN110993401A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113161172A (en) * | 2021-05-08 | 2021-07-23 | 江苏洛云电力科技有限公司 | Interlocking mechanism for circuit breaker operating mechanism |
| CN113257593A (en) * | 2021-05-24 | 2021-08-13 | 广东易正电气股份有限公司 | Five-prevention mechanical locking structure of air environment-friendly cabinet based on 5G communication technology |
| CN113257609A (en) * | 2021-04-19 | 2021-08-13 | 平高集团有限公司 | Disconnecting switch and grounding switch interlocking structure and switch equipment using same |
| CN114203478A (en) * | 2021-11-24 | 2022-03-18 | 镇江市丹高电器有限公司 | Interlocking structure of isolating switch and circuit breaker |
| CN116844910A (en) * | 2023-06-28 | 2023-10-03 | 江苏宏达电气有限公司 | Isolation built-in all-insulation column type deep fusion circuit breaker and interlocking method |
| CN116844910B (en) * | 2023-06-28 | 2024-05-24 | 江苏宏达电气有限公司 | Isolation built-in all-insulation column type deep fusion circuit breaker and interlocking method |
-
2019
- 2019-12-11 CN CN201911266259.XA patent/CN110993401A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113257609A (en) * | 2021-04-19 | 2021-08-13 | 平高集团有限公司 | Disconnecting switch and grounding switch interlocking structure and switch equipment using same |
| CN113257609B (en) * | 2021-04-19 | 2023-02-07 | 平高集团有限公司 | Disconnecting switch and grounding switch interlocking structure and switch equipment using same |
| CN113161172A (en) * | 2021-05-08 | 2021-07-23 | 江苏洛云电力科技有限公司 | Interlocking mechanism for circuit breaker operating mechanism |
| CN113161172B (en) * | 2021-05-08 | 2023-09-22 | 江苏洛凯机电股份有限公司 | Interlocking mechanism for breaker operating mechanism |
| CN113257593A (en) * | 2021-05-24 | 2021-08-13 | 广东易正电气股份有限公司 | Five-prevention mechanical locking structure of air environment-friendly cabinet based on 5G communication technology |
| CN114203478A (en) * | 2021-11-24 | 2022-03-18 | 镇江市丹高电器有限公司 | Interlocking structure of isolating switch and circuit breaker |
| CN116844910A (en) * | 2023-06-28 | 2023-10-03 | 江苏宏达电气有限公司 | Isolation built-in all-insulation column type deep fusion circuit breaker and interlocking method |
| CN116844910B (en) * | 2023-06-28 | 2024-05-24 | 江苏宏达电气有限公司 | Isolation built-in all-insulation column type deep fusion circuit breaker and interlocking method |
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