CN212062240U - Mechanical interlocking device for mutually locking high-voltage switch circuit breaker and grounding switch - Google Patents
Mechanical interlocking device for mutually locking high-voltage switch circuit breaker and grounding switch Download PDFInfo
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- CN212062240U CN212062240U CN202021174056.6U CN202021174056U CN212062240U CN 212062240 U CN212062240 U CN 212062240U CN 202021174056 U CN202021174056 U CN 202021174056U CN 212062240 U CN212062240 U CN 212062240U
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- circuit breaker
- locking
- switch
- grounding switch
- locking rod
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Abstract
The utility model discloses a mechanical interlocking device for mutually locking a high-voltage switch circuit breaker and an earthing switch, which comprises an operating lever component, an inserting latch component, an earthing switch locking rod component and a circuit breaker locking component; the earthing switch is locked by operating a lever to drive an earthing switch locking rod, and meanwhile, the circuit breaker body interlock is released; the interlocking spring bolt of the circuit breaker body is locked by pushing the circuit breaker locking slide block through the circuit breaker locking rod, and the shaft sleeve interlocking of the grounding switch operation hole is released at the same time. So as to realize mutual locking between the circuit breaker and the grounding switch. The five-prevention requirement of the high-voltage switch equipment is met, the operation and maintenance are safer, personal injury and property loss caused by human errors and misoperation can be prevented, and the operation and maintenance requirements of the power system are met.
Description
Technical Field
The utility model relates to a 40.5KV high pressure complete sets of switchgear (hereinafter referred to as "switchgear"), especially relate to a mechanical interlock that high tension switchgear circuit breaker and earthing switch interlock each other.
Background
With the rapid development of the power industry, the application of high-voltage complete switch equipment is more and more extensive. Especially, when the switch equipment is used, potential safety hazards still exist in the aspect of misoperation prevention, and the misoperation has great influence and harm on the safe operation of the power system. The five-prevention interlocking mechanism of the switch equipment is the basic requirement for ensuring the safe operation, overhaul and maintenance of the switch equipment.
At present, the cabinet type of a universal 40.5kV switch device is basically fixed, the configured earthing switch operating mechanisms are basically consistent, but the types of circuit breakers configured for the switch device are different from one another, so that higher change requirements are provided for two protection in five protection of the switch device, namely 'earthing switch locking circuit breaker' and 'circuit breaker locking earthing switch'.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a mechanical interlock that high tension switchgear circuit breaker and earthing switch interlock each other.
The utility model aims at realizing through the following technical scheme:
the utility model discloses a mechanical interlocking device for mutually locking a high-voltage switch circuit breaker and an earthing switch, which comprises an operating lever component, an earthing switch locking rod component, a circuit breaker locking component and an inserting bolt component;
the operating lever assembly comprises an operating lever, the middle part of the operating lever is hinged with an operating lever supporting piece, the rear end of the operating lever is an operating end and is provided with an operating lever return spring, and the front end of the operating lever is provided with a long hole;
the grounding switch locking rod assembly comprises a grounding switch locking rod, the middle part of the grounding switch locking rod is connected with the locking rod supporting piece in a sliding mode, the upper end of the grounding switch locking rod corresponds to the interlocking hole of the grounding switch operating mechanism and is provided with a locking rod reset spring, the lower end of the grounding switch locking rod is connected with a circuit breaker locking rod, and the middle part of the circuit breaker locking rod is hinged with a long hole in the front end of the operating lever;
the circuit breaker shutting subassembly includes circuit breaker shutting slider and 40.5kV circuit breaker interlocking spring bolt, circuit breaker shutting slider is fixed on the circuit breaker shutting locking lever, 40.5kV circuit breaker interlocking spring bolt is adorned on circuit breaker shutting slider guide and is equipped with circuit breaker shutting slider reset spring, the outside of circuit breaker shutting slider is equipped with the inclined plane, the inclined plane with the button head contact of 40.5kV circuit breaker interlocking spring bolt rear end is equipped with on the 40.5kV circuit breaker body with the lockhole that 40.5kV circuit breaker interlocking spring bolt corresponds.
By the foregoing the utility model provides a technical scheme can see out, the embodiment of the utility model provides a mechanical interlock that high tension switchgear circuit breaker and earthing switch interlock each other, it is safer when switchgear uses and overhauls, can prevent the people for the maloperation through forcing mechanical interlock, avoid causing life injury and loss of property. The design of the locking mechanism is an important and key part of the five-prevention interlocking of the switch equipment, and can meet the requirement of safe operation of a power system.
Drawings
Fig. 1 is a schematic structural diagram of a mechanical interlocking device for interlocking a high-voltage switch circuit breaker and a ground switch provided by an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a circuit breaker locking assembly according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a locking rod assembly of the earthing switch according to an embodiment of the present invention.
Fig. 4 and 5 are schematic diagrams illustrating unlocking and locking of the earthing switch operating mechanism according to the embodiment of the present invention, respectively.
Fig. 6a and fig. 6b are respectively the embodiment of the utility model provides an outside side and the positive sketch map of 40.5kV circuit breaker interlocking spring bolt stretch out the circuit breaker body.
In the figure:
1-earthing switch locking lever, 2-locking lever reset spring, 3-locking lever support, 4-operating lever reset spring, 5-operating lever, 6-circuit breaker locking lever, 7-operating lever support, 8-circuit breaker locking slider guide, 9-circuit breaker locking slider, 10-circuit breaker locking slider reset spring, 11-latch assembly (standard), 12-earthing switch operating shaft, 13-40.5kV switch equipment body, 14-40.5kV switch equipment cabinet body, 15-40.5kV circuit breaker interlocking bolt, 16-40.5kV circuit breaker body, 17-earthing switch operating mechanism, 18-earthing switch opening position interlocking hole, 19-inner shaft sleeve, 20-earthing switch operating mechanism unlocking and 21-earthing switch operating mechanism locking.
Detailed Description
Embodiments of the present invention will be described in further detail below. Details not described in the embodiments of the present invention belong to the prior art known to those skilled in the art.
The utility model discloses a mechanical interlock that high tension switchgear circuit breaker and earthing switch interlock each other, the concrete implementation mode of its preferred is:
the grounding switch locking device comprises an operating lever assembly, a grounding switch locking rod assembly, a circuit breaker locking assembly and an inserting latch assembly;
the operating lever assembly comprises an operating lever, the middle part of the operating lever is hinged with an operating lever supporting piece, the rear end of the operating lever is an operating end and is provided with an operating lever return spring, and the front end of the operating lever is provided with a long hole;
the grounding switch locking rod assembly comprises a grounding switch locking rod, the middle part of the grounding switch locking rod is connected with the locking rod supporting piece in a sliding mode, the upper end of the grounding switch locking rod corresponds to the interlocking hole of the grounding switch operating mechanism and is provided with a locking rod reset spring, the lower end of the grounding switch locking rod is connected with a circuit breaker locking rod, and the middle part of the circuit breaker locking rod is hinged with a long hole in the front end of the operating lever;
the circuit breaker shutting subassembly includes circuit breaker shutting slider and 40.5kV circuit breaker interlocking spring bolt, circuit breaker shutting slider is fixed on the circuit breaker shutting locking lever, 40.5kV circuit breaker interlocking spring bolt is adorned on circuit breaker shutting slider guide and is equipped with circuit breaker shutting slider reset spring, the outside of circuit breaker shutting slider is equipped with the inclined plane, the inclined plane with the button head contact of 40.5kV circuit breaker interlocking spring bolt rear end is equipped with on the 40.5kV circuit breaker body with the lockhole that 40.5kV circuit breaker interlocking spring bolt corresponds.
The bolt inserting assembly is arranged corresponding to the rear end part of the operating lever and comprises a bolt, a compression spring and a support.
The grounding switch operating mechanism comprises a grounding switch operating shaft, the grounding switch operating shaft is provided with an inner shaft sleeve, the inner shaft sleeve is provided with a grounding switch opening position interlocking hole, and the upper end of the grounding switch locking rod corresponds to the position of the grounding switch opening position interlocking hole.
The utility model discloses a mechanical interlock that high tension switchgear circuit breaker and earthing switch interlock each other, it is safer when switchgear uses and overhauls, can prevent the people for the maloperation through forcing mechanical blocking device, avoids causing life injury and loss of property. The design of the locking mechanism is an important and key part of the five-prevention interlocking of the switch equipment, and can meet the requirement of safe operation of a power system.
The specific embodiment is as follows:
as shown in fig. 1, 2 and 3, the mechanical interlocking device for interlocking the high-voltage switch circuit breaker and the grounding switch is designed and additionally provided with a lever and a slider mechanism on the basis of the existing switch equipment to lock one of the circuit breaker and the grounding switch, so that the circuit breaker and the grounding switch are interlocked.
The working principle is as follows:
high-voltage switchgear all has "five prevent" interlocking requirement, wherein requires to interlock each other between circuit breaker and the earthing switch, embodies one and prevents for: prevent to ground part power transmission (require ground switch to close the lock circuit breaker), prevent for two: preventing grounding of the live part (requiring the circuit breaker to latch the grounding switch).
One prevents, prevents to ground connection part power transmission (require ground switch to close the lock circuit breaker) as shown in fig. 4, in switchgear, the circuit breaker is in experimental position and for the separating brake state, the utility model discloses when the operating lever of device is in the release state, under blocking lever reset spring and operating lever reset spring's combined action, circuit breaker shutting locking lever promotes circuit breaker shutting slider, pushes 40.5kV circuit breaker interlocking spring bolt into the circuit breaker body, realizes the circuit breaker shutting, and the circuit breaker can not realize closing a floodgate and remove this moment. Meanwhile, the locking rod of the grounding switch is retracted outside the shaft sleeve of the operation hole, the shaft sleeve in the operation hole is unlocked, and the operation handle can compress the shaft sleeve to enter the operation hole to be connected with the operating shaft of the grounding switch, so that the opening and closing of the grounding switch are realized. And vice versa. That is, when the earthing switch can perform the opening and closing operation, the circuit breaker must be in the test position and cannot perform the closing and moving operation, preventing the power from being transmitted to the earthing portion.
Two prevent, prevent to ground the electrified part ground connection (require circuit breaker shutting earthing switch) as shown in fig. 5, the utility model discloses the device has designed a locking hole on the downthehole axle sleeve of earthing switch operating hole, and when earthing switch was in the separating brake state, locking hole release was aligned with the earthing switch locking pole, and under this state, operating lever was pressed down, the earthing switch locking pole can get into in the locking hole to pin the lever with inserting the bolt, realize the earthing switch shutting. Simultaneously, the operating lever drives circuit breaker shutting locking lever rebound, and under circuit breaker shutting slider reset spring's effect, circuit breaker shutting slider removes to circuit breaker shutting slider guide, and at this moment, 40.5kV circuit breaker interlocking spring bolt stretches out this external (fig. 6a, fig. 6b) of circuit breaker, realizes 40.5kV circuit breaker unblock, and the circuit breaker can realize divide-shut brake operation and pass in and out the removal in switchgear. And vice versa. That is to say, when earthing switch is in the separating brake state, through operating lever pinning earthing switch operation axle sleeve, circuit breaker body interlocking spring bolt can just be released, and at this moment, the circuit breaker can carry out combined floodgate and removal operation. And the grounding switch can not carry out closing operation, so that the electrified part is prevented from being grounded.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. A mechanical interlocking device for mutually locking a high-voltage switch circuit breaker and an earthing switch is characterized by comprising an operation lever assembly, an earthing switch locking rod assembly, a circuit breaker locking assembly and an inserting latch assembly;
the operation lever assembly comprises an operation lever (5), the middle part of the operation lever (5) is hinged with an operation lever supporting piece (7), the rear end of the operation lever (5) is an operation end and is provided with an operation lever reset spring (4), and the front end of the operation lever (5) is provided with a long hole;
the grounding switch locking rod assembly comprises a grounding switch locking rod (1), the middle of the grounding switch locking rod (1) is connected with a locking rod support (3) in a sliding mode, the upper end of the grounding switch locking rod (1) corresponds to an interlocking hole of a grounding switch operating mechanism and is provided with a locking rod reset spring (2), the lower end of the grounding switch locking rod (1) is connected with a circuit breaker locking rod (6), and the middle of the circuit breaker locking rod (6) is hinged to a long hole in the front end of an operating lever (5);
the circuit breaker locking assembly comprises a circuit breaker locking slider (9) and a 40.5kV circuit breaker interlocking bolt (15), the circuit breaker locking slider (9) is fixed on a circuit breaker locking lock rod (6), the 40.5kV circuit breaker interlocking bolt (15) is installed on a circuit breaker locking slider guide part (8) and is provided with a circuit breaker locking slider reset spring (10), the outer side of the circuit breaker locking slider (9) is provided with an inclined plane, the inclined plane is in round head contact with the rear end of the 40.5kV circuit breaker interlocking bolt (15), and a lock hole corresponding to the 40.5kV circuit breaker interlocking bolt (15) is formed in a 40.5kV circuit breaker body (16).
2. The mechanical interlock device for interlocking a high-voltage switch disconnector with a grounding switch according to claim 1, characterized in that the latch assembly is arranged in correspondence of the rear end position of the operating lever (5) and comprises a latch (11), a compression spring and a bracket.
3. The mechanical interlock device for interlocking a high-voltage switch disconnector with a grounding switch according to claim 1 or 2, characterized in that the grounding switch operating mechanism comprises a grounding switch operating shaft (12) provided with an inner bushing (19), the inner bushing (19) being provided with a grounding switch opening position interlock hole (18), and the upper end of the grounding switch blocking rod (1) corresponds to the position of the grounding switch opening position interlock hole (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021174056.6U CN212062240U (en) | 2020-06-22 | 2020-06-22 | Mechanical interlocking device for mutually locking high-voltage switch circuit breaker and grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021174056.6U CN212062240U (en) | 2020-06-22 | 2020-06-22 | Mechanical interlocking device for mutually locking high-voltage switch circuit breaker and grounding switch |
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| CN212062240U true CN212062240U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021174056.6U Active CN212062240U (en) | 2020-06-22 | 2020-06-22 | Mechanical interlocking device for mutually locking high-voltage switch circuit breaker and grounding switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584274A (en) * | 2020-06-22 | 2020-08-25 | 中鸿泰电气有限公司 | Mechanical interlocking device for mutually locking high-voltage switch circuit breaker and grounding switch |
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2020
- 2020-06-22 CN CN202021174056.6U patent/CN212062240U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584274A (en) * | 2020-06-22 | 2020-08-25 | 中鸿泰电气有限公司 | Mechanical interlocking device for mutually locking high-voltage switch circuit breaker and grounding switch |
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