CN107403704A - Mutual interlocking gear for the earthed switch of gas insulated transformer substation - Google Patents
Mutual interlocking gear for the earthed switch of gas insulated transformer substation Download PDFInfo
- Publication number
- CN107403704A CN107403704A CN201710356766.7A CN201710356766A CN107403704A CN 107403704 A CN107403704 A CN 107403704A CN 201710356766 A CN201710356766 A CN 201710356766A CN 107403704 A CN107403704 A CN 107403704A
- Authority
- CN
- China
- Prior art keywords
- bull stick
- interlock system
- rotary shaft
- housing
- axle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/46—Interlocking mechanisms
-
- 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
- H01H31/003—Earthing switches
-
- 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
-
- 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
- H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
- H01H9/285—Locking mechanisms incorporated in the switch assembly and operable by a key or a special tool
Abstract
The present invention relates to a kind of mutual interlocking gear of the earthed switch for gas insulated transformer substation, can stop or discharge the earthed switch for gas insulated transformer substation actuating mechanism cogwheel, the interlock system (1) includes housing (4), housing encapsulation：Bull stick, the bull stick have the end that can be moved between the blocking position and the free position spaced a distance with cogwheel of pressing cogwheel；Rotary shaft, the rotary shaft can move between blocking position and free position, and the axle has：The inner, the inner carrying cam disc is so that bull stick moves；And outer end, the outer end are projected into outside housing (4) to activate the axle；Spring, the spring, which has, to be fixed on the end of bull stick and is fixed on another end of housing (4), to press bull stick relative to cam disc；Key-lock (8,9), the key-lock is fixed on housing (4) and is engaged with axle (21), so as to be locked in its blocking position or its free position.
Description
Technical field
The present invention relates to protective gas insulated substations electrical ground switch, such as allow power line with electrically connect connect
Ground switchs, and is not influenceed by unconscious or unauthorized operation.
Background technology
In gas insulated transformer substation, the power line for being connected to ground generally includes one or three buses, this or
Three buses are installed in the leakage preventing housing filled with dielectric gas (such as SF6).
The earthed switch of the transformer station includes housing, and the housing is fixed on the shell of wrapping bus, and female with these
Line and the connection with the grounding device of transformer station.It encapsulates the actuator for including cogwheel decelerator (cogwheel reductor)
Structure and drive motor, so as to allow by its drive motor Operation switch from its make bus with ground disconnect open mode to its
Make the closure state that bus is connected to ground.
In most cases, may be by extra handle manual operation switch, to allow that drive motor can not be being used
In the case of operated.
It is an object of the invention to provide a kind of mutual interlocking gear, the mutual interlocking gear can protect such earthed switch not by
Unauthorized or the influence of unconscious operation.
The content of the invention
The present invention relates to a kind of actuating mechanism that can stop or discharge the earthed switch for gas insulated transformer substation
The interlock system (interlock system) of cogwheel, the interlock system include housing, housing encapsulation：
- bull stick, the bull stick has can be in the pressing blocking position of cogwheel and spaced a distance with cogwheel
The end moved between free position；
- rotary shaft, the rotary shaft can move between blocking position and free position, and the rotary shaft has：The inner, should
The inner is engaged with bull stick to be moved to its free position to be passed to the rotation of the axle from its blocking position and moves on the contrary
It is dynamic；And outer end, outer end projection at the outside of housing, to allow operator to activate the axle；
- key-lock, the key-lock are fixed on housing and are engaged with axle, so as to by the axle be locked in its blocking position or its from
By position.
By the arrangement, mutual interlocking gear can be easily installed at existing earthed switch, without opening the ground connection
Put row exaptation into.
The invention further relates to the inner carrying cam disc of interlock system for example described above, wherein rotary shaft, the cam
Disk is engaged with bull stick is moved to its free position and shifted against to be passed to the rotation of the axle from its blocking position,
And including spring, the spring, which has, to be fixed on the end of bull stick and is fixed on another end of housing, with relative to cam
Disk Continued depression bull stick.
The invention further relates to interlock system for example described above, a part for bull stick is persistently pulled to its resistance by wherein spring
Gear is put.
The invention further relates to interlock system for example described above, and the wherein end of bull stick includes little gear, at bull stick
When blocking position, two of little gear and actuating mechanism engage cogwheel engagement, and small when bull stick is in free position
It is spaced apart that gear with the two engages cogwheel.
The invention further relates to interlock system for example described above, the interlock system includes：Hinged arm, the hinged arm can with
Pass through actuator between the electric open mode of earthed switch and the corresponding open position of electric closure state and closing position
Structure moves along rotary shaft；Feather key, the feather key are carried by rotary shaft and are positioned at pivot when rotary shaft is in blocking position
Between the open position of bar and closing position, if the interposition being in guarantee hinged arm between its open position and closing position
Put, rotary shaft can not be moved to its blocking position from its free position.
The invention further relates to the earthed switch for being equipped with all interlock systems as described above etc.
Brief description of the drawings
Fig. 1 is the perspective view according to the earthed switch for being equipped with interlocking module of the present invention；
Fig. 2 is that, when earthed switch is in its open mode, the part of interlock system is in free position according in the present invention
Put, show the housing inner face perspective view of interlock system；
Fig. 3 be according in the present invention, when earthed switch is in open mode, the interlock system part in blocking position
Perspective view；
Fig. 4 is the front view of the interlock system part in blocking position according in the present invention；
Fig. 5 is the front view of the interlock system part in free position according in the present invention；
Fig. 6 be according in the present invention, when earthed switch is in its open mode, the interlock system portion in free position
The perspective view of part；
Fig. 7 is according in the present invention, when earthed switch is operated to its closure state from its open mode, in freedom
The perspective view of the interlock system part of position；
Fig. 8 be according in the present invention, when earthed switch is in its closure state, the interlock system portion in free position
The perspective view of part；
Fig. 9 be according in the present invention, when earthed switch is in its closure state, the interlock system portion in blocking position
The perspective view of part.
Embodiment
In Fig. 1, insulation gas station (Insulated Gas Station) is fixed on according to the interlock system 1 of the present invention
Earthed switch 3 housing 2, the earthed switch also includes the actuating mechanism (not showing in Fig. 1) that is packaged in its housing.
As shown in Figure 2, interlock system 1 includes cast housing 4, cast housing encapsulation and the actuator of earthed switch 3
6, two key-locks 8 and 9 of mutual interlocking gear and knob 11, the key-lock and knob that structure 7 is engaged are carried on housing 4
At outside.
Housing 4 has the general shape of the parallelepiped of a face opening, i.e. including main or baseplane wall 12, bag
Four walls 13,14,16,17 around bottom wall 12 prolong continuously and nearly vertically with the main or baseplane wall with the bottom wall 12
Stretch.Four wrapping walls 13,14,16,17 are terminated by forming the public peripheral edge of flange 18, and the flange includes hole 19, housing 4
By the hole bolt connection on the housing of earthed switch.
By the housing, interlock system can easily be coupled to existing ground connection by changing the cover plate of the earthed switch
In switch, without further remodeling.
The interlock system that can be seen in detail in figs. 3 and 4 includes axle 21, the axle along parallel with main wall 12 and
The axis AX vertical with preceding wrapping wall 13 extends.The axle 21 has by the umbo from main wall 12 and the center including bearing
The first end that support 22 supports.Second end of the axle 21 protrudes through antetheca 13, and the antetheca, which is formed, supports the another of the axle 21
Individual bearing.
Knob 11 is fixed on the second end of the axle 21 projected into outside antetheca 13, so as to allow operator by rotating its rotation
Button 11 rotates axle 21.
The actuating mechanism of earthed switch includes two cogwheels 23,24 and the free little gear engaged with cogwheel 23
(Cogwheels) 26, the cogwheel and free little gear are positioned adjacent to central abutment 22 and surrounded and put down with axis AX
Capable corresponding axle rotation.The actuating mechanism includes other parts not shown in accompanying drawing.
Cogwheel can be stopped by the free end of the bull stick (Swivel Lever) 27 carried by central abutment 22
23 rotations, and the cogwheel can rotate relative to the rotary shaft parallel with axis AX and apart from the axle certain distance.This turn
Bar 27 carries little gear 28 in its free end.
When the bull stick 27 is in the free position of the contraction as shown in Fig. 2, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, its free end
Portion is spaced apart relative to cogwheel 23 and little gear 26, so as to allow the actuating mechanism that operational grounding switchs.When this turn
When bar 27 is in the blocking position that it is disposed (as shown in Fig. 3, Fig. 4 and Fig. 9), the little gear 28 and inserted tooth of its free end
Take turns 23 and engaged with little gear 26 to stop its rotation, so that actuating mechanism can not operate.
Bull stick 27 is moved to its free position and shifted against by the rotation of axle 21 from its blocking position.More specifically
Ground, the axle 21 carry cam disc 29 at its first end, and the cam disc is applied to the appropriate section of bull stick 27.In addition, reset
Spring 31, which has, to be fixed on the first end of central abutment 22 and is fixed on the second end of the end of bull stick 27, and the bull stick end is with holding
The free end for carrying little gear 28 is relative.Due to the spring 31, bull stick 27 is persistently pulled to its blocking position, and its Continued depression
Cam disc 29.
As shown in Figure 4, when axle 21 is in its blocking position, cam disc presses the core of bull stick 27, the center
Part is close to its rotation axis, so as to allow spring 31 to act deploy bull stick 27 at its blocking position.
As shown in Figure 5, when axle 21 is in its free position, i.e., 1/8th are rotated counterclockwise from its blocking position
When, cam disc 29 presses the relative with its free end of bull stick 27 and rotates an axis part spaced apart, so as to right
The action of anti-spring 31, shrink bull stick 27 at its free position.
As shown in Figure 4 and Figure 5, central abutment 22 includes two latch 32,33, and two latch are from it before
Wall 13 orient face projection and the rotationally constrained of cam disc 29 is stopped in its free position with it due to the presence of axle 21
Between position.
In fact, two key-locks 8 and 9 of the outside of antetheca 13 are carried at every side of knob 11 to be allowed to lock on axle 21
Due to its blocking position and its free position.Knob has two device to hole, and the equal diameter of two device to hole is relatively positioned and moved
Certain angle.Make key rotate the bolt of driving key-lock to enter in the hole of knob and therefore lock any further of rotary shaft
Rotation.
Therefore, it is desirable to from it, electrically open mode is operated to its electric closure state as shown in Figure 3 by earthed switch
Operator must open key-lock 8 and 9 first by key 34 and 36, so as to allow operation knob 11.Once key-lock 8 and 9 solves
Lock, operator must make 1/8th turns of 11 rotate counterclockwise of knob, so that bull stick 27 is contracted to its free position, the free position
Put corresponding with Fig. 6 situation.At this stage, its integrated motor driving can be opened by ground connection for example manually or by order
Pass is operated to its closure state from its open mode, so as to cause the situation shown in Fig. 8.
At this stage, operator can make knob rotate clockwise 1/8th turns, and bull stick 27 is arranged in into its stop
Position, so as to stop the further operation of earthed switch, and key-lock 8 and 9 is locked by key 34 and 36, this situation with Fig. 9
It is corresponding.
Also included being used to ensure to be in its open mode and closure state in earthed switch according to the interlock system of the present invention
Between intermediateness (such as shown in Fig. 7) when the device that can not lock.
Mutual interlocking gear includes hinged arm 37, and the hinged arm can surround the axis AY rotation vertical with the bottom wall 12 of housing and energy
It is enough to be moved along rotary shaft 21.The hinged arm 37 is connected to the corresponding tappet (Tappet) of the actuating mechanism of earthed switch, and the tappet exists
Moved between the open position corresponding with the open mode and closure state of earthed switch and closing position.
More specifically, the tappet of actuating mechanism includes from its tip protrusion and is inserted into the corresponding oval of hinged arm 37
Stud or finger in hole 40.The hole extends near rotary shaft 21 along the length of hinged arm 37.
When mechanism switches to its closure state from its open mode, tappet is vertical with bottom wall 12 and including AX axis
Plane in rotate, wherein stud is remained inserted in hole 40.This causes stud according to the large radius mainly extended along axle 21
Circular path moves, so that hinged arm 37 is moved to its closing position from its open position.When the mechanism is cut from closure state
Opposite movement is obtained when shifting to open mode.
Therefore, when earthed switch be in as shown in Fig. 2, Fig. 3 and Fig. 6 it is electric perform fighting state when, hinged arm 37 is in it
Open position, its free end is close to antetheca 13.When earthed switch is in its electric closure state as shown in figs. 8 and 9
When, hinged arm 37 is in its closing position, and its free end is spaced apart with antetheca 13 and closer to central abutment 22.
The free end of hinged arm 37 extends in the lower section of holding plate 38, and the holding plate is extended parallel to bottom wall 12 and phase
The bottom wall 12 firmly fixed for it thereon is located at the horizontal top of rotary shaft 21.
Rotary shaft 21 includes feather key 39, and the feather key is being positioned between the open position of hinged arm 37 and closing position
Projected into region outside its external peripheral surface.
When rotary shaft 21 is in its free position, feather key 39 is lateral, i.e. the path away from hinged arm 37 extends, so as to permit
Perhaps hinged arm 37 moves freely through between its limits.But when rotary shaft 21 is in its blocking position, feather key 39 with
Bottom wall 12 relatively extends, i.e. extends in the path of hinged arm 37.
Result is if hinged arm 37 is in as shown in Figure 7 between the open mode of earthed switch and closure state
Between position, rotary shaft 21 can not operates from its free position to its blocking position.In fact, in such movement, it is oriented to
Key 39 meets with hinged arm 37, so as to forbid rotary shaft 21 to reach blocking position.
In order to improve the efficiency of arrangement, hinged arm 37 includes two latch, two latch from its bottom surface projection and
Firmly stop feather key in the case that axle 21 is rotated to blocking position when hinged arm 37 is in centre position as shown in Figure 7
39.Feather key and latch are respectively provided with the height bigger than the distance between axle 21 and hinged arm 37.
Due to the feather key 39 of hinged arm 37 can be interfered in middle position, therefore it can not be in and open in earthed switch
Interlock system is locked during intermediateness between closure.
Claims (6)
1. a kind of interlock system (1), the interlock system (1) is opened for stopping or discharging for the ground connection of gas insulated transformer substation
The cogwheel (23) of the actuating mechanism (7) of (3) is closed, the interlock system (1) includes housing (4), the housing encapsulation：
- bull stick (27), the bull stick have and can press the blocking position of the cogwheel and be spaced apart with the cogwheel
The end moved between the free position of certain distance；
- rotary shaft (21), the rotary shaft can move between blocking position and free position, and the rotary shaft has：It is interior
End, inner be engaged with the bull stick (27) are moved to it to be passed to the rotation of the axle (21) from its blocking position
Free position and shifted against；And outer end, outer end projection at the outside of the housing (4), to allow operator
Activate the axle (21)；
- key-lock (8,9), the key-lock are fixed on the housing (4) and are engaged with the axle (21), so as to which the axle be locked
Due to its blocking position or its free position.
2. interlock system according to claim 1, wherein, the inner carrying cam disc (29) of the rotary shaft (21), institute
State cam disc to be engaged with the bull stick (27), it is moved to certainly from its blocking position to be passed to the rotation of the axle (21)
By position and shifted against, and including spring (31), the spring have the end of being fixed on the bull stick (27) and
Another end of the housing (4) is fixed on, with relative to bull stick (27) described in the cam disc (29) Continued depression.
3. interlock system according to claim 2, wherein, the spring (31) continues a part for the bull stick (27)
It is pulled to its blocking position.
4. interlock system according to claim 3, wherein, the end of the bull stick (27) includes little gear (26), works as institute
When stating bull stick (27) and being in blocking position, two of the little gear and the actuating mechanism (7) engage cogwheel (23,26) and nibble
Close, and when the bull stick (27) is in free position, the little gear engages cogwheel (23,26) interval one with the two
Set a distance.
5. the interlock system according to claim 1 or 4, wherein, the interlock system includes：Hinged arm (37), the hinged arm
Can be in the open position corresponding with the electric open mode and electric closure state of the earthed switch (3) and closing position
Between it is mobile along the rotary shaft (21) by the actuating mechanism (7)；Feather key (39), the feather key is by the rotary shaft
(21) carry and open position and the closure of the hinged arm (37) are positioned at when the rotary shaft (21) is in blocking position
Between position, if to ensure that the hinged arm (37) is in the centre position between its open position and closing position, the rotation
Rotating shaft (21) can not be moved to its blocking position from its free position.
A kind of 6. earthed switch for being equipped with interlock system according to any one of the preceding claims.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP16170388.9 | 2016-05-19 | ||
| EP16170388.9A EP3246931B1 (en) | 2016-05-19 | 2016-05-19 | Interlock mechanism for an earthing switch of a gas insulated substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107403704A true CN107403704A (en) | 2017-11-28 |
Family
ID=56026705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710356766.7A Pending CN107403704A (en) | 2016-05-19 | 2017-05-19 | Mutual interlocking gear for the earthed switch of gas insulated transformer substation |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3246931B1 (en) |
| CN (1) | CN107403704A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201038043Y (en) * | 2007-03-11 | 2008-03-19 | 郑文秀 | Switching mechanism for intelligent double-power automatic switching device |
| CN202167429U (en) * | 2011-08-12 | 2012-03-14 | 苏州未来电器有限公司 | Clutch system for energy storage electrically-operated apparatus |
| WO2013119289A2 (en) * | 2012-02-09 | 2013-08-15 | G & W Electric Company | Interlock system for switchgear |
| CN203871254U (en) * | 2014-05-29 | 2014-10-08 | 厦门兴厦控电气有限公司 | Operating mechanism of three-station isolation switch |
| CN104471806A (en) * | 2012-07-13 | 2015-03-25 | 三菱电机株式会社 | Switch gear |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2878070B1 (en) * | 2004-11-18 | 2006-12-22 | Areva T & D Ag | MECHANICAL CONTROL DEVICE FOR AN ELECTRICAL EQUIPMENT WITH THREE SWITCH POSITIONS HAVING A SELECTION LEVER COOPERATING WITH A CAME |
| KR101100709B1 (en) * | 2010-06-10 | 2011-12-30 | 엘에스산전 주식회사 | Interlock apparatus for solid insulated switchgear |
-
2016
- 2016-05-19 EP EP16170388.9A patent/EP3246931B1/en active Active
-
2017
- 2017-05-19 CN CN201710356766.7A patent/CN107403704A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201038043Y (en) * | 2007-03-11 | 2008-03-19 | 郑文秀 | Switching mechanism for intelligent double-power automatic switching device |
| CN202167429U (en) * | 2011-08-12 | 2012-03-14 | 苏州未来电器有限公司 | Clutch system for energy storage electrically-operated apparatus |
| WO2013119289A2 (en) * | 2012-02-09 | 2013-08-15 | G & W Electric Company | Interlock system for switchgear |
| CN104471806A (en) * | 2012-07-13 | 2015-03-25 | 三菱电机株式会社 | Switch gear |
| CN203871254U (en) * | 2014-05-29 | 2014-10-08 | 厦门兴厦控电气有限公司 | Operating mechanism of three-station isolation switch |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3246931B1 (en) | 2019-04-10 |
| EP3246931A1 (en) | 2017-11-22 |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171128 |
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