CN108511256A - Earthing switch interlocking mechanism and switchgear - Google Patents
Earthing switch interlocking mechanism and switchgear Download PDFInfo
- Publication number
- CN108511256A CN108511256A CN201810457111.3A CN201810457111A CN108511256A CN 108511256 A CN108511256 A CN 108511256A CN 201810457111 A CN201810457111 A CN 201810457111A CN 108511256 A CN108511256 A CN 108511256A
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- Prior art keywords
- connecting lever
- earthing switch
- switch
- interlocking mechanism
- connection
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- 230000007246 mechanism Effects 0.000 title claims abstract description 61
- 230000009471 action Effects 0.000 claims abstract description 22
- 238000009434 installation Methods 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000007480 spreading Effects 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/10—Interlocking mechanisms for interlocking two or more switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The present invention relates to a kind of earthing switch interlocking mechanism and switchgears, earthing switch interlocking mechanism includes for the first connecting lever with isolator operation axis connection and the second connecting lever for operating axis connection with earthing switch, first connecting lever and the second connecting lever are flexibly connected by connector, the connector is equipped with the first connecting portion for being connect with the first connecting lever and the second connecting portion for being connect with the second connecting lever, it is at least one in first connecting portion and second connecting portion to be equipped with for being flexibly connected with corresponding connecting lever so that connector adapts to the connection long lumbar hole of the first connecting lever and the action of the second connecting lever, the connection long lumbar hole, which has, to be respectively used to coordinate with corresponding connecting lever block to limit the limited wall of the second connecting lever action when disconnecting switch is in closing position.Solve the problems, such as that the earthing switch existing in the prior art caused by the damages such as earthed crank arm or pull rod falls.
Description
Technical field
The present invention relates to earthing switch interlocking mechanism and switchgears.
Background technology
In, in low-voltage power power transmission and transformation system, fixed switching cabinet with XGN2 using relatively broad, the switchgear
Distinguishing feature is to use fixed breaker and GN Series Switch-disconnectors, and when disconnecting switch separating brake in such switchgear can be formed
Apparent fracture, security performance are higher.Earthing switch is usually linked together with disconnecting switch, and operation is more convenient.
Disconnecting switch used at present and earthing switch usually come by mechanical latching JSXGN-12 or manual operating mechanism CS6
Realize that interlocking, safety are higher.But when ageing equipment or artificial property maloperation may cause the behaviour such as earthed crank arm or operation pull rod
Motivation structure damages, and earthing switch may automatically fall because of its own gravity, to cause fault ground fault.
Invention content
The purpose of the present invention is to provide a kind of earthing switch interlocking mechanism, with solve in the prior art because of earthed crank arm or
The problem of damages such as pull rod cause earthing switch to fall；The present invention also aims to provide a kind of above-mentioned earthing switch of use to join
The switchgear of latch mechanism.
The technical solution of switchgear of the present invention is：
Switchgear includes the disconnecting switch of cabinet and installation on the cabinet, and the disconnecting switch includes isolator operation axis and connects
Ground switching manipulation axis, is connected with earthing switch interlocking mechanism in the disconnecting switch, the earthing switch interlocking mechanism include with
First connecting lever of isolator operation axis connection and the second connecting lever that axis connection is operated with earthing switch, first connecting lever and the
Two connecting levers are flexibly connected by connector, and the connector is equipped with the first connecting portion being connect with the first connecting lever and is turned with second
The second connecting portion of arm connection, in first connecting portion and second connecting portion it is at least one be equipped with for the flexible connection of corresponding connecting lever
So that connector adapt to the first connecting lever and the second connecting lever action connection long lumbar hole, the connection long lumbar hole with for it is corresponding
The cooperation of connecting lever block is to limit the limited wall of the second connecting lever action when disconnecting switch is in closing position.
The beneficial effects of the invention are as follows：On the basis of original " five is anti-" mechanical interlocking, in isolator operation axis and connect
The first connecting lever, the second connecting lever and the connector for connecting two connecting levers are increased separately on ground switching manipulation axis.When earthed crank arm or operation
When the operating mechanisms such as pull rod damage, for disconnecting switch under energization "on" position, the limited wall for connecting long lumbar hole limits the second connecting lever
Action, earthing switch will not automatically fall because of the position-limiting action by the second connecting lever because of its own gravity, to avoid failure
Property ground fault, improve switchgear interlocking reliability.It solves existing in the prior art because of earthed crank arm or pull rod etc.
The problem of damage causes earthing switch to fall.
It processes, is connected described in this programme there are one long lumbar hole sets, and be arranged in second connecting portion for convenience of design.This
It connects long lumbar hole described in scheme to be arranged in second connecting portion, it is only necessary to a connection length be arranged on connector as needed
Waist hole connects the design of long lumbar hole and easy to process.
When to increase the first connecting lever or the action of the second connecting lever, connection connector is reliably connected with the second connecting lever, this programme
Described in axis pin is fixed on the second connecting lever, the pin slide is assemblied in connection long lumbar hole.By axis pin with connect long waist
Hole is slidably matched, and the second connecting lever opposite joints is not only facilitated to act, and ensure when the second connecting lever acts and connector can
By connection.
For increase disconnecting switch be in closing position when, earthing switch open position stability, described in this programme
The equal length of first connecting lever and the second connecting lever.In this way when disconnecting switch is in closing position, the first connecting lever, the second connecting lever,
Connector forms parallelogram with mounting bracket, conveniently earthing switch is made to be maintained at open position.
To avoid interfering between earthing switch interlocking mechanism and grounding switch, isolator operation described in this programme
Axis, earthing switch operating shaft rolling assembling are on the mounting bracket of disconnecting switch, the earthing switch interlocking mechanism and disconnecting switch
Grounding switch be in the both sides opposite in mounting bracket.Grounding switch is in the difference of mounting bracket with earthing switch interlocking mechanism
Side can effectively avoid increased earthing switch interlocking mechanism and be interfered in action with grounding switch.
The technical solution of earthing switch interlocking mechanism of the present invention is：
Earthing switch interlocking mechanism include for isolator operation axis connection the first connecting lever and be used for and earthing switch grasp
Make the second connecting lever of axis connection, first connecting lever and the second connecting lever are flexibly connected by connector, and the connector is equipped with
First connecting portion for being connect with the first connecting lever and the second connecting portion for being connect with the second connecting lever, first connecting portion and
It is at least one in two interconnecting pieces to be equipped with for being flexibly connected with corresponding connecting lever so that connector adapts to the first connecting lever and the second connecting lever
The connection long lumbar hole of action, the connection long lumbar hole, which has, to be respectively used to coordinate to be in disconnecting switch with corresponding connecting lever block
The limited wall of the second connecting lever action is limited when closing position.
There are one the connection long lumbar hole is set, and it is arranged in second connecting portion.
Axis pin is fixed on second connecting lever, the pin slide is assemblied in connection long lumbar hole.
The equal length of first connecting lever and the second connecting lever.
Description of the drawings
Fig. 1 is that the earthing switch interlocking mechanism in the specific embodiment 1 of the earthing switch interlocking mechanism of the present invention is mounted on
Partial structural diagram when on switchgear；
Fig. 2 is state diagram of the earthing switch interlocking mechanism in disconnecting switch combined floodgate, grounding switch tripping in Fig. 1；
Fig. 3 is state diagram of the earthing switch interlocking mechanism in disconnecting switch separating brake, grounding switch tripping in Fig. 1；
Fig. 4 is state diagram of the earthing switch interlocking mechanism in disconnecting switch separating brake, earthing switch combined floodgate in Fig. 1；
Fig. 5 is that the earthing switch interlocking mechanism in the earthing switch interlocking mechanism specific embodiment 2 of the present invention closes keeping apart
State diagram when lock, grounding switch tripping；
Fig. 6 is that the earthing switch interlocking mechanism in the earthing switch interlocking mechanism specific embodiment 2 of the present invention divides in disconnecting switch
State diagram when lock, grounding switch tripping；
Fig. 7 is that the earthing switch interlocking mechanism in the earthing switch interlocking mechanism specific embodiment 2 of the present invention divides in disconnecting switch
State diagram when lock, earthing switch combined floodgate；
In figure：The first connecting levers of 1-, the second connecting levers of 2-, 3- connectors, 4- axis pins, 5- connection long lumbar holes, 6- isolator operation axis,
7- earthing switch operating shafts, 8- mounting brackets.
Specific implementation mode
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The specific embodiment 1 of the earthing switch interlocking mechanism of the present invention, as shown in Figures 1 to 4, earthing switch interlocking mechanism
Include the first connecting lever 1 for being connect with isolator operation axis 6 and the second connecting lever for being connect with earthing switch operating shaft 7
2, the first connecting lever 1 and the second connecting lever 2 are connected by connector 3, and connector 3 is equipped with first for being connect with the first connecting lever 1
Interconnecting piece and second connecting portion for being connect with the second connecting lever 2, second connecting portion be equipped with for 2 activity of the second connecting lever even
It connects so that connector 3 adapts to the connection long lumbar hole 5 of the first connecting lever 1 and the action of the second connecting lever 2.It is arranged only in second connecting portion and connects
Spreading waist hole 5, it is only necessary to a connection long lumbar hole 5 be set on connector 3 as needed, connect the design of long lumbar hole 5
With it is easy to process.In other embodiments, connection long lumbar hole may be provided in first connecting portion；It also can be in first connecting portion and
Connection long lumbar hole is correspondingly arranged on two interconnecting pieces.
For convenience of processing, the connection long lumbar hole in the present embodiment is linear type hole, connects long lumbar hole in other embodiments
Also the arcuate socket that can be set as in background technology.Connecting long lumbar hole 5 has for coordinating in disconnecting switch with 2 block of the second connecting lever
Limited when in closing position the second connecting lever 2 action the first limited wall, connection long lumbar hole 5 also have for the second connecting lever 2
Second limited wall of block cooperation.The first limited wall in the present embodiment is to be arranged close to the first connecting lever 1 on connection long lumbar hole 5
Hole wall, the second limited wall are the hole wall connected far from the setting of the first connecting lever 1 on long lumbar hole 5.It is fixed with axis pin 4 on second connecting lever 2,
And axis pin 4 is slidably matched with long lumbar hole 5 is connect.On the one hand, by axis pin 4 with connect long lumbar hole 5 be slidably matched can guarantee connection
Part 3 is reliably connected with the second connecting lever 2；On the other hand, it even if being replaced to axis pin 4 if axis pin 4 damages, is not required to
Entire second connecting lever 2 is replaced, cost is saved and facilitates processing.In other embodiments, it can be arranged on the second connecting lever and connect
The sliding block that spreading waist hole is slidably matched, and sliding block and the second connecting lever are integrally formed；Axis pin size is also smaller than connection long lumbar hole, only
Have when the limited wall for connecting long lumbar hole coordinates with axis pin block, axis pin is just contacted with the hole wall of connection long lumbar hole.
As depicted in figs. 1 and 2, when disconnecting switch is in closing position, earthing switch is in open position, the first connecting lever
1 coordinates limitation earthing switch to be moved to closing position by axis pin 4 with the first limited wall block for connecting long lumbar hole 5, makes ground connection
Switch is maintained at open position, even if the operating mechanisms damage such as earthed crank arm or operation pull rod, passes through earthing switch interlocking mechanism
Earthing switch is kept to be in separating brake shape when also earthing switch can be effectively prevent because its own gravity is fallen, while disconnecting switch being made to close a floodgate
State.Shown in Fig. 3, disconnecting switch is in open position, earthing switch is also at open position, and the second limited wall is turned with second at this time
2 block of arm coordinates, and disconnecting switch or earthing switch can be moved to closing position.As shown in figure 4, when disconnecting switch is in sub-gate position
It sets, when earthing switch is in closing position, axis pin 4 coordinates limitation connector 3 with the first limited wall block for connecting long lumbar hole 5
It is mobile, it is moved to closing position to limit disconnecting switch by connector 3, earthing switch is avoided to be closed simultaneously with disconnecting switch
Lock ensures the electric property of switchgear.
On the basis of original " five is anti-" mechanical interlocking, on isolator operation axis 6 and earthing switch operating shaft 7 respectively
Increase the first connecting lever 1, the second connecting lever 2 and the connector 3 for connecting two connecting levers.When the operating mechanisms damage such as earthed crank arm or operation pull rod
Bad when, disconnecting switch under energization "on" position, connection long lumbar hole 5 limited wall limit the second connecting lever 2 action, earthing switch because
Position-limiting action by the second connecting lever 2 will not automatically fall because of its own gravity, to avoid fault ground fault, improve
The reliability of switchgear interlocking.Solves the earthing switch existing in the prior art caused by the damages such as earthed crank arm or pull rod
The problem of falling.
It should be noted that the installation of isolator operation axis 6,7 rolling assembling of earthing switch operating shaft in disconnecting switch
On frame 8, the grounding switch of earthing switch interlocking mechanism and disconnecting switch in the present embodiment is in the not homonymy in mounting bracket 8,
Increased earthing switch interlocking mechanism is can effectively avoid to interfere in action with grounding switch.In other embodiments, it connects
Ground switch interlocking mechanism can also be in the homonymy of mounting bracket with grounding switch.To avoid earthing switch interlocking mechanism and grounding switch
Between interfere, the equal length of the first connecting lever 1 and the second connecting lever 2, in this way when disconnecting switch is in closing position, first
Connecting lever 1, the second connecting lever 2, connector 3 and mounting bracket 8 form parallelogram, conveniently earthing switch are made to be maintained at open position.
In other embodiments, the first connecting lever and the second connecting lever length also can be unequal.
When carrying out the installation of earthing switch interlocking mechanism, earthing switch is in gate-dividing state first, at disconnecting switch
In "on" position, the first connecting lever 1 and the second connecting lever 2 are mounted on by axis pin 4 and connector 3 on isolator operation axis 6, adjusted
Saving the angle of the second connecting lever 2 makes axis pin 4 and the limited wall block of the connection long lumbar hole 5 of connector 3 coordinate, then by the second connecting lever
2 are fixed in earthing switch operating shaft 7, then disconnecting switch operation, and removal ground connection pull rod examines earthing switch interlocking mechanism
Reliability.It should be noted that when removal is grounded pull rod, if earthing switch remains at open position, earthing switch connection
Latch mechanism is functional.
The earthing switch interlocking mechanism safety coefficient of the present invention is higher, can be widely used for box fixed metallic enclosed switching
In equipment.Earthing switch interlocking mechanism is installed in the upper disconnecting switch of switchgear（Knife with ground）It is, perfect that original " five is anti-
Interlocking " mechanical interlocks.Disconnecting switch can effectively prevent ageing equipment, artificial maloperation etc. and draw under energization "on" position
In the formula with ground risen when the damage of disconnecting switch operating mechanism, earthing falls because of dead weight causes electrical equipment malfunction to be grounded thing
Therefore.Earthing switch interlocking mechanism manufacture craft of the invention is simple, assembly process process is good, securely and reliably, effectively enhances out
Close the security performance of cabinet.
The specific embodiment 2 of the earthing switch interlocking mechanism of the present invention, the tool with the earthing switch interlocking mechanism of the present invention
Body embodiment 1 is compared, and is differed only in：As shown in Figures 5 to 7, the connection long lumbar hole 5 in the present embodiment is arranged one, and sets
It sets in first connecting portion, connection long lumbar hole 5 has for coordinating to be in closing position in disconnecting switch with 1 block of the first connecting lever
The first limited wall of the second connecting lever 2 action and the second limited wall for coordinating with 2 block of the second connecting lever are limited when setting.This implementation
The first limited wall in example is to connect the hole wall being arranged close to the second connecting lever 2 on long lumbar hole 5, and the second limited wall is connection long lumbar hole
Hole wall far from the setting of the second connecting lever 2 on 5.As shown in figure 5, when disconnecting switch is in closing position, earthing switch is in separating brake
When position, the first connecting lever 1 coordinates with the first limited wall block for connecting long lumbar hole 5, passes through the limit of the first connecting lever 1 and connector 3
Position cooperation limitation earthing switch is moved to closing position, so that earthing switch is maintained at open position, even if earthed crank arm or operation
The operating mechanisms such as pull rod damage, and also earthing switch can be effectively prevent because its own gravity is fallen by earthing switch interlocking mechanism, together
When keep earthing switch to be in gate-dividing state when disconnecting switch being made to close a floodgate.As shown in fig. 6, disconnecting switch is in open position, connects
Ground switch is also at open position, the cooperation of the second limited wall and the first connecting lever limit at this time, and disconnecting switch or earthing switch can be to
Closing position moves.As shown in fig. 7, when disconnecting switch is in open position, earthing switch is in closing position, the first connecting lever
1 with connect long lumbar hole 5 the first limited wall block coordinate limitation disconnecting switch to closing position move, avoid earthing switch with every
It leaves pass while closing a floodgate, ensure the electric property of switchgear.
The specific embodiment 3 of the earthing switch interlocking mechanism of the present invention, the tool with the earthing switch interlocking mechanism of the present invention
Body embodiment 1 is compared, and is differed only in：The company is both provided in first connecting portion and second connecting portion in the present embodiment
Spreading waist hole, when disconnecting switch is in closing position, the second connecting lever coordinates with the connection long lumbar hole block in second connecting portion
To limit the action of the second connecting lever；When earthing switch is in closing position, the connection long lumbar hole of the first connecting lever and first connecting portion
Block cooperation is to limit the action of the first connecting lever.
The specific embodiment of the switchgear of the present invention, switchgear include the earthing switch interlocking of cabinet and installation on the cabinet
Mechanism, the specific embodiment 1 of earthing switch interlocking mechanism in the present embodiment and above-mentioned earthing switch interlocking mechanism to embodiment 3
In any one of earthing switch interlocking mechanism structure it is identical, repeat no more.
Claims (9)
1. earthing switch interlocking mechanism, characterized in that include for isolator operation axis connection the first connecting lever and be used for
The second connecting lever of axis connection is operated with earthing switch, first connecting lever and the second connecting lever are flexibly connected by connector, described
Connector is equipped with the first connecting portion for being connect with the first connecting lever and the second connecting portion for being connect with the second connecting lever, the
It is at least one in one interconnecting piece and second connecting portion to be equipped with for being flexibly connected with corresponding connecting lever so that connector adaptation first is turned
Arm and the second connecting lever action connection long lumbar hole, the connection long lumbar hole have be respectively used to corresponding connecting lever block cooperation with
Disconnecting switch limits the limited wall of the second connecting lever action when being in closing position.
2. earthing switch interlocking mechanism according to claim 1, characterized in that there are one the connection long lumbar hole is set, and
It is arranged in second connecting portion.
3. earthing switch interlocking mechanism according to claim 2, characterized in that it is fixed with axis pin on second connecting lever,
The pin slide is assemblied in connection long lumbar hole.
4. earthing switch interlocking mechanism according to claim 1 or 2 or 3, characterized in that first connecting lever is turned with second
The equal length of arm.
5. switchgear includes the disconnecting switch of cabinet and installation on the cabinet, the disconnecting switch includes isolator operation axis
With earthing switch operating shaft, characterized in that be connected with earthing switch interlocking mechanism, the earthing switch connection in the disconnecting switch
Latch mechanism includes the second connecting lever with the first connecting lever of isolator operation axis connection and with earthing switch operation axis connection, described
First connecting lever and the second connecting lever are flexibly connected by connector, and the connector is equipped with the first connection being connect with the first connecting lever
Portion and the second connecting portion being connect with the second connecting lever, in first connecting portion and second connecting portion it is at least one be equipped with for it is corresponding
Connecting lever is flexibly connected so that connector adapts to the connection long lumbar hole of the first connecting lever and the action of the second connecting lever, the connection long lumbar hole tool
It is useful for coordinating with corresponding connecting lever block to limit the limited wall of the second connecting lever action when disconnecting switch is in closing position.
6. switchgear according to claim 5, characterized in that there are one the connection long lumbar hole is set, and be arranged second
On interconnecting piece.
7. switchgear according to claim 6, characterized in that be fixed with axis pin on second connecting lever, the axis pin is slided
It is dynamic to be assemblied in connection long lumbar hole.
8. according to the switchgear described in claim 5 or 6 or 7, characterized in that the length phase of first connecting lever and the second connecting lever
Deng.
9. according to the switchgear described in claim 5 or 6 or 7, characterized in that the isolator operation axis, earthing switch behaviour
Make that shaft rotation is dynamic to be assemblied on the mounting bracket of disconnecting switch, the grounding switch of the earthing switch interlocking mechanism and disconnecting switch is in
In the both sides that mounting bracket is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810457111.3A CN108511256A (en) | 2018-05-14 | 2018-05-14 | Earthing switch interlocking mechanism and switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810457111.3A CN108511256A (en) | 2018-05-14 | 2018-05-14 | Earthing switch interlocking mechanism and switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108511256A true CN108511256A (en) | 2018-09-07 |
Family
ID=63400495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810457111.3A Pending CN108511256A (en) | 2018-05-14 | 2018-05-14 | Earthing switch interlocking mechanism and switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108511256A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401131A (en) * | 2019-07-12 | 2019-11-01 | 湖州电力设备成套有限公司 | A kind of low capacity substation high_voltage isolation cabinet |
| CN111725020A (en) * | 2020-06-29 | 2020-09-29 | 浙江福祥瑞特电气有限公司 | Novel high-voltage isolating switch |
| US11476647B1 (en) * | 2021-04-22 | 2022-10-18 | Rockwell Automation Technologies, Inc. | Maintenance grounding device in motor control center with integrated interlock system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110401131A (en) * | 2019-07-12 | 2019-11-01 | 湖州电力设备成套有限公司 | A kind of low capacity substation high_voltage isolation cabinet |
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| CN111725020A (en) * | 2020-06-29 | 2020-09-29 | 浙江福祥瑞特电气有限公司 | Novel high-voltage isolating switch |
| US11476647B1 (en) * | 2021-04-22 | 2022-10-18 | Rockwell Automation Technologies, Inc. | Maintenance grounding device in motor control center with integrated interlock system |
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Application publication date: 20180907 |
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| RJ01 | Rejection of invention patent application after publication |