CN105702518B - High-voltage switch cabinet isolation switch and earthing switch interlock error operation proof mechanism - Google Patents
High-voltage switch cabinet isolation switch and earthing switch interlock error operation proof mechanism Download PDFInfo
- Publication number
- CN105702518B CN105702518B CN201610215294.9A CN201610215294A CN105702518B CN 105702518 B CN105702518 B CN 105702518B CN 201610215294 A CN201610215294 A CN 201610215294A CN 105702518 B CN105702518 B CN 105702518B
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- China
- Prior art keywords
- switch
- operating mechanism
- driven disc
- driver plate
- output shaft
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Classifications
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- 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
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
Abstract
The invention discloses a kind of high-voltage switch cabinet isolation switch and earthing switch interlock error operation proof mechanism, it includes isolator operating mechanism and earthing switch operating mechanism, and isolator operating mechanism and earthing switch operating mechanism use same root operating shaft.The isolator operating mechanism and earthing switch operating mechanism respectively include output toggle arm, driven disc and the driver plate for driving driven disc, and two driver plates are successively installed in the operating shaft.The mechanism is easy to operate, and operator can disposably be continuously finished isolation/lower operation being grounded, and meets " five is anti-" and requires, and structure is simple, component is few, and easy for installation, overall dimensions are small.
Description
Technical field
The present invention relates to high voltage electric equipment anti-misoperation technical fields, and in particular to a kind of high-voltage switch cabinet isolation switch
With earthing switch interlock error operation proof mechanism.
Background technique
The high-tension switch cabinet of power supplying and distributing equipment mainly by operating elements such as vacuum circuit breaker, disconnecting switch, earthing switches, with
And the measurements such as mutual inductor, protection element form current supply circuit.The power transmission of high-tension switch cabinet or power-off are usually by isolator operation
The operating mechanism of mechanism and earthing switch is completed, and give, power off and maintenance process in disconnecting switch and earthing switch operation
Frequency highest.According to the requirement of safety regulation for operations, when power transmission, must could will keep apart and close first by grounding switch tripping
Lock；Conversely, disconnecting switch first must be in separating brake when power-off, earthing switch could then be closed a floodgate.In traditional technology, high pressure
The isolator operating mechanism of switchgear and the operating mechanism of earthing switch are usually mutually independent split type structure, although adopting
With there is an anti-misoperation measure, but not only there is the defects of volume is big, and installation is complicated, inconvenient for operation in this structure, and anti-error
Poor reliability is easy to happen maloperation and leads to the accidents such as equipment damage or casualties, and safety is still poor.Though currently,
So have five anti-interlocking integrated techniques or disconnecting switch and a grounding switch interlocked operation technology, but it is most there are structures more
Complexity operates the disadvantages of inflexible or reliability is poor.
CN204792537U discloses a kind of operating mechanism for high voltage switch cabinet, by earthing switch operating mechanism and isolation
Switch operating mechanism concentrates in the same box body, and can block the second shaft is increased in earthing switch operating mechanism
Two baffles increase the first baffle that can block first rotating shaft in isolator operating mechanism, and operate in earthing switch
The slide plate blocked can be replaced to the second shaft or first rotating shaft implementation by increasing between mechanism and isolator operating mechanism.The skill
Although art can be avoided causes a serious accident because of operation order mistake, and can ensure that the correctness of operation order, improves interlocking
The reliability of function, but main member and structure, up to as many as 37, structure is still more complex, and production, installation workload are larger, and
The reduction of its volume is also extremely limited.
Summary of the invention
The problem to be solved by the invention is to provide a kind of high-voltage switch cabinet isolation switch and earthing switch to interlock anti-error behaviour
Make mechanism, which can disposably complete the operation of disconnecting switch and earthing switch, without substep branch in a traditional way
It carries out, and can ensure that the correctness of operation order, meet " five is anti-" and require, reliably avoid causing weight because of operation order mistake
Major break down.
In order to solve the above technical problems, the technical solution used in the present invention is: a kind of high-voltage switch cabinet isolation switch with
Earthing switch interlock error operation proof mechanism comprising isolator operating mechanism and earthing switch operating mechanism, disconnecting switch behaviour
Make mechanism and earthing switch operating mechanism using same root operating shaft.
The isolator operating mechanism and earthing switch operating mechanism respectively include output toggle arm, driven disc and for driving
The driver plate of dynamic driven disc, two driver plates are successively installed in the operating shaft.
The output shaft of the isolator operating mechanism and the output shaft of earthing switch operating mechanism are arranged concentrically.
The driver plate is matched by the sliding slot being arranged on finger and driven disc.
Two driver plate is respectively equipped with locking boss, and matches respectively with the groove of two driven disc sides setting, is used for
Realize the locking of disconnecting switch and grounding switch tripping or "on" position.
The operating shaft and output shaft are connect by supporting plate with switchgear inner wall.
The beneficial effects of the present invention are:
1) lock misoperation-proof mechanism of the invention uses self-positioning concentric preset program mode hand-operated structures, is suitable for
It wears side and loads onto isolation/lower miniaturization fixed switchgear being grounded, the mechanism is easy to operate, and operator can be disposably continuous complete
It at upper isolation/lower operation being grounded, is operated without substep branch in a traditional way, upper isolation/lower ground connection can be by mechanism
Portion's blas successively acts, and meets " five is anti-" and requires, and structure is simple, component is few, and easy for installation, overall dimensions are small, is not necessary to
(mechanism can be placed conveniently in the crossbeam between middle door and Xiamen the useful space of occupancy switchgear width direction, and outside is only set
One handle hole is operated for division, enormously simplifies the Facad structure arrangement of switchgear), switchgear width dimensions can be made to contract
Reduce to 600MM；
2) by the setting of locking boss, when the first driver plate or the rotation of the second driver plate drive the first driven disc or second respectively
After driven disc rotate in place, the first locking boss or the second locking boss go to match with the first groove or the second groove respectively
Position, when the first driven disc or the second driven disc continue to rotate, the first driven disc or the second driven disc are no longer rotated, Er Qieyou
In the first locking boss or the second locking boss and the first groove or the inhibition of the second groove cooperation, no matter the first driven disc
Or second driven disc or the first output toggle arm or the second output toggle arm will not be acted by any external force, be achieved in isolation
The locking of switch and grounding switch tripping or "on" position.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the structural schematic diagram of the embodiment of the present invention two；
Fig. 4 is the top view of Fig. 3.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Embodiment one
As shown in Figure 1 and Figure 2, high-voltage switch cabinet isolation switch of the invention and earthing switch interlock error operation proof mechanism, packet
Isolator operating mechanism and earthing switch operating mechanism are included, isolator operating mechanism and earthing switch operating mechanism respectively include
One the first driven disc 2, the second driven disc 8 and first driver plate 4, the second driver plate 7, wherein two first driven discs 2, second from
Moving plate 8 respectively with the first output toggle arm 10 of isolator operating mechanism and earthing switch operating mechanism, the second output toggle arm 15
It is respectively fixedly connected on the first output shaft 11, the second output shaft 14, the first driven disc 2, the second driven disc 8 are defeated with first respectively
Connecting lever 10, the second output toggle arm 15 and the first output shaft 11, the second output shaft 14 rotate together out.Two the first driver plates 4, second
Driver plate 7 is provided with the first finger 3, the second finger 6 close to first side, radially sets respectively on the first driven disc 2, the second driven disc 8
It is equipped with first sliding groove 12, the second sliding slot 9 with the first finger 3, the cooperation of the second finger 6, when the first driver plate 4, the second driver plate 7 rotate
When, i.e., the first driven disc 2, the rotation of the second driven disc 8 are driven by the first finger 3, the second finger 6 respectively.Two the first driver plates
4, the second driver plate 7 is successively installed in operating shaft 5, i.e., can drive isolator operating mechanism simultaneously by rotating operating shaft 5
It is acted with the first output toggle arm 10, the second output toggle arm 15 of earthing switch operating mechanism, realizes disconnecting switch and earthing switch
Separating brake or combined floodgate.In order to realize the synchronization of two first driven discs 2, the movement of the second driven disc 8, the first output shaft 11 and second is defeated
Shaft 14 is arranged concentrically.Operating shaft 5 and two first output shafts 11, the second output shaft 14 can be mounted on switch by two supporting plates 1
On the inner wall 13 of cabinet, and one handle hole (not shown) corresponding with operating shaft 5 can be set in the enabling side of switchgear, be convenient for
The switching on and off operation of disconnecting switch and earthing switch is carried out in switchgear closed state, above-mentioned composition is self-positioning concentric preset
Program mode hand-operated structures.
Lock misoperation-proof mechanism of the invention uses self-positioning concentric preset program mode hand-operated structures, suitable for matching
Isolation/lower miniaturization fixed switchgear being grounded is loaded into side, the mechanism is easy to operate, and operator can disposably be continuously finished
Upper isolation/lower the operation being grounded, operates without substep branch in a traditional way, and upper isolation/lower ground connection is by in-house set
Program successively acts, and meets " five is anti-" and requires, easy for installation, overall dimensions are small, are not necessary to occupy the effective of switchgear width direction
(mechanism can be placed conveniently in the crossbeam between middle door and Xiamen, and external only one handle hole is operated for division, significantly simple in space
Change the Facad structure arrangement of switchgear), switchgear width dimensions can be made to be reduced to 600MM；
The application method of the interlock error operation proof mechanism is: disconnecting switch sub-switching operation: after breaker open operation, by handle hole
Insertion operation handle is allowed to be cooperatively connected with operating shaft 5, and to rotating clockwise 135 °, passes through the first finger the 3 and the 1st
Cooperation drives the first driver plate 2 and the first 135 ° of rotation counterclockwise of output shaft 11, while the first output shaft 11 drives the first output to turn
Arm 10, the second output toggle arm are with identical angular turn, the i.e. positioning of completion disconnecting switch separating brake.
Earthing switch closing operation: after completing disconnecting switch sub-switching operation, continue to rotating clockwise direction rotation process
Axis 5 drives the second driver plate 8 and the second 135 ° of rotation counterclockwise of output shaft 14 by the cooperation of the second finger 6 and second sliding slot 9,
The second output shaft 14 drives the second output toggle arm 15 with identical angular turn simultaneously, i.e., completion earthing switch, which closes a floodgate, positions.
Grounding switch tripping operation: in the case where completing earthing switch closing operation state, handle hole insertion operation handle is made
Be cooperatively connected with operating shaft 5, and to 135 ° of rotation counterclockwise, by the cooperation of the second finger 6 and second sliding slot 9, drive the
Two driver plates 8 and the second output shaft 14 rotate clockwise 135 °, while the second output shaft 14 drives the second output toggle arm 15 with identical
Angular turn in place, i.e., completion grounding switch tripping positioning.
Disconnecting switch closing operation: after completing grounding switch tripping operation, continue to direction of rotation rotation process counterclockwise
Axis 5 drives the first driver plate 2 and the first output shaft 11 to rotate clockwise by the cooperation of the first finger 3 and first sliding groove 12
135 °, while the first output shaft 11 drives the first output toggle arm 10 in place, that is, to complete to keep apart to close with identical angular turn
Lock positioning.
Practical aforesaid operations are exactly that 270 ° of the disposable continuous rotation of manual rotation operation handle successively completes disconnecting switch point
Lock and earthing switch close a floodgate or grounding switch tripping disconnecting switch is closed a floodgate；Preceding 135 ° of completion disconnecting switch separating brakes or earthing switch point
Lock, rear 135 ° of completion earthing switches close a floodgate or disconnecting switch is closed a floodgate.
Embodiment two
Referring to Fig. 3, Fig. 4, as the further improvement to one technical solution of embodiment, lock misoperation-proof mechanism of the invention
The first locking boss 18 and the second locking boss 19 can be respectively set on two first driver plates 4 and the second driver plate 7, and respectively with two
2 of the setting of the two sides of first sliding groove 12 described in first driven disc 2,8 outer circumferential sides position of the second driven disc and second sliding slot 9 the
One the second groove 17 of groove 16, two matches.By the first driver plate 4, the second driver plate 7 rotation drive respectively the first driven disc 2,
After second driven disc 8 rotate in place, the first locking boss 18, second locks boss 19 and goes to respectively and the first groove 16, second
The position that groove 17 matches, then the first driven disc 2, the second driven disc 8 when the first driven disc 2, the second driven disc 8 continue to rotate
It no longer rotates, and since the cooperation that the first locking boss 18, second locks boss 19 and the first groove 16, the second groove 17 hinders
Hinder, and though the first driven disc 2, the second driven disc 8 or the first output toggle arm 10, the second output toggle arm 15 by any external force not yet
It can act, be achieved in the locking of disconnecting switch and grounding switch tripping or "on" position.
Although presently preferred embodiments of the present invention is described above, to illustrate principles and applications, answer
The understanding, the present invention can otherwise realize on the basis of without departing from these principles.
Claims (4)
1. a kind of high-voltage switch cabinet isolation switch and earthing switch interlock error operation proof mechanism, it includes isolator operating mechanism
And earthing switch operating mechanism, isolator operating mechanism and earthing switch operating mechanism use same root operating shaft, it is described every
It include the first output toggle arm, the first driven disc and the first driver plate for driving the first driven disc from switch operating mechanism, it is described
Earthing switch operating mechanism includes the second output toggle arm, the second driven disc and the second driver plate for driving the second driven disc, institute
It states the first driver plate and the second driver plate is successively installed in the operating shaft, the first driven disc is fixedly connected on the first output toggle arm
On first output shaft, the second driven disc and the second output toggle arm are fixedly connected on the second output shaft, and the first driver plate is close to circumference
Side is provided with the first finger, and the second driver plate is provided with the second finger close to circumference, has been arranged radially on the first driven disc and the
The first sliding groove of one finger cooperation, the second sliding slot with the cooperation of the second finger is arranged radially on the second driven disc, and feature exists
In: locking mechanism is arranged in the isolator operating mechanism and earthing switch operating mechanism, which includes described two groups
The respectively arranged locking boss of disk and in the two respectively arranged grooves in driven disc side, the locking boss is matched with groove；
The operating method of the interlock error operation proof mechanism includes the following steps:
S1, disconnecting switch sub-switching operation: after breaker open operation, handle hole insertion operation handle is allowed to cooperate company with operating shaft
It connects, and to rotating clockwise 135 °, by the cooperation of the first finger and first sliding groove, drives the first driver plate and the first output shaft inverse
Hour hands rotate 135 °, while the first output shaft drives the first output toggle arm with identical angular turn, i.e. completion disconnecting switch point
Lock positioning；
S2, earthing switch closing operation: after completing disconnecting switch sub-switching operation, continue to rotating clockwise direction rotation process
Axis drives the second driver plate and the second output shaft to rotate 135 ° counterclockwise by the cooperation of the second finger and second sliding slot, while the
Two output shafts drive the second output toggle arm with identical angular turn, i.e., completion earthing switch, which closes a floodgate, positions；
S3, grounding switch tripping operation: in the case where completing earthing switch closing operation state, handle hole insertion operation handle is allowed to
It is cooperatively connected with operating shaft, and second driver plate is driven by the cooperation of the second finger and second sliding slot to 135 ° of rotation counterclockwise
And second output shaft rotate clockwise 135 °, while the second output shaft drives the second output toggle arm to arrive with identical angular turn
Position, the i.e. positioning of completion grounding switch tripping；
S4, disconnecting switch closing operation: after completing grounding switch tripping operation, continue to direction of rotation rotation process counterclockwise
Axis drives the first driver plate and the first output shaft to rotate clockwise 135 ° by the cooperation of the first finger and first sliding groove, while the
One output shaft drives the first output toggle arm in place, that is, to complete disconnecting switch combined floodgate positioning with identical angular turn.
2. high-voltage switch cabinet isolation switch as described in claim 1 and earthing switch interlock error operation proof mechanism, feature exist
In: the output shaft of the isolator operating mechanism and the output shaft of earthing switch operating mechanism are arranged concentrically.
3. high-voltage switch cabinet isolation switch as described in claim 1 and earthing switch interlock error operation proof mechanism, feature exist
In: the driver plate is cooperated by the sliding slot being arranged on finger and driven disc.
4. high-voltage switch cabinet isolation switch as claimed in claim 3 and earthing switch interlock error operation proof mechanism, feature exist
In: the operating shaft and output shaft pass through supporting plate and connect with high-tension switch cabinet inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610215294.9A CN105702518B (en) | 2016-04-08 | 2016-04-08 | High-voltage switch cabinet isolation switch and earthing switch interlock error operation proof mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610215294.9A CN105702518B (en) | 2016-04-08 | 2016-04-08 | High-voltage switch cabinet isolation switch and earthing switch interlock error operation proof mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105702518A CN105702518A (en) | 2016-06-22 |
| CN105702518B true CN105702518B (en) | 2018-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610215294.9A Active CN105702518B (en) | 2016-04-08 | 2016-04-08 | High-voltage switch cabinet isolation switch and earthing switch interlock error operation proof mechanism |
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| CN (1) | CN105702518B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112490060B (en) * | 2020-11-20 | 2023-01-10 | 北京清畅电力技术股份有限公司 | Five-prevention interlocking device for bus side three-station switch ring main unit contact scheme |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102148108A (en) * | 2010-02-05 | 2011-08-10 | 北京科锐配电自动化股份有限公司 | Closing/opening operating mechanism for upper and lower isolating switches and grounding switch and switch cabinet |
| CN102903563A (en) * | 2012-10-25 | 2013-01-30 | 温州盛川机电制造有限公司 | Five-prevention operating mechanism of high-tension switch cabinet |
| CN203589571U (en) * | 2013-11-13 | 2014-05-07 | 朝阳当凯电力开关有限公司 | High-voltage switch cabinet with modular operating mechanism |
| CN203871215U (en) * | 2014-04-25 | 2014-10-08 | 浙江高压开关厂有限公司 | Five-prevention interlocking device of high-voltage ring main unit |
| CN204045442U (en) * | 2014-07-31 | 2014-12-24 | 福建逢兴机电设备有限公司 | A kind of interlocking gear |
| CN205122462U (en) * | 2015-10-26 | 2016-03-30 | 许继集团有限公司 | Earthing switch spring operating mechanism is kept apart to three stations |
| CN205508702U (en) * | 2016-04-08 | 2016-08-24 | 南阳市鑫特电气有限公司 | High tension switchgear isolator prevents mistake operating device with earthing switch interlocking |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86208982U (en) * | 1986-11-08 | 1987-10-28 | 长沙市高压开关厂 | Operational mechanism for using high-voltage disconnecting switch |
| CN201608068U (en) * | 2010-01-25 | 2010-10-13 | 山东泰开中压开关有限公司 | Novel electric-manual grooved pulley three-station mechanism |
| CN202872227U (en) * | 2012-10-23 | 2013-04-10 | 成都科星电力电器有限公司 | Breaker open operation interlocking device and high-tension switchgear applying the device |
| CN203192691U (en) * | 2013-05-06 | 2013-09-11 | 浙江华仪电器科技有限公司 | Operating mechanism for three-position vacuum interrupter |
-
2016
- 2016-04-08 CN CN201610215294.9A patent/CN105702518B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102148108A (en) * | 2010-02-05 | 2011-08-10 | 北京科锐配电自动化股份有限公司 | Closing/opening operating mechanism for upper and lower isolating switches and grounding switch and switch cabinet |
| CN102903563A (en) * | 2012-10-25 | 2013-01-30 | 温州盛川机电制造有限公司 | Five-prevention operating mechanism of high-tension switch cabinet |
| CN203589571U (en) * | 2013-11-13 | 2014-05-07 | 朝阳当凯电力开关有限公司 | High-voltage switch cabinet with modular operating mechanism |
| CN203871215U (en) * | 2014-04-25 | 2014-10-08 | 浙江高压开关厂有限公司 | Five-prevention interlocking device of high-voltage ring main unit |
| CN204045442U (en) * | 2014-07-31 | 2014-12-24 | 福建逢兴机电设备有限公司 | A kind of interlocking gear |
| CN205122462U (en) * | 2015-10-26 | 2016-03-30 | 许继集团有限公司 | Earthing switch spring operating mechanism is kept apart to three stations |
| CN205508702U (en) * | 2016-04-08 | 2016-08-24 | 南阳市鑫特电气有限公司 | High tension switchgear isolator prevents mistake operating device with earthing switch interlocking |
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| CN105702518A (en) | 2016-06-22 |
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