CN109698089A - A kind of tri-station isolating switch and atmospheric closed permanent-magnet breaker cabinet - Google Patents
A kind of tri-station isolating switch and atmospheric closed permanent-magnet breaker cabinet Download PDFInfo
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- CN109698089A CN109698089A CN201910081847.XA CN201910081847A CN109698089A CN 109698089 A CN109698089 A CN 109698089A CN 201910081847 A CN201910081847 A CN 201910081847A CN 109698089 A CN109698089 A CN 109698089A
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- Prior art keywords
- knife
- isolation
- connecting lever
- ground connection
- switch
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/02—Details
- H02B11/04—Isolating-contacts, e.g. mountings or shieldings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The present invention provides a kind of tri-station isolating switch, including switch movable contact knife system and stationary contact knife system, stationary contact knife system has the isolation quiescent contacting knife for being separated from each other setting and a ground connection quiescent contacting knife, the switch movable contact knife system includes dynamic matching piece, transmission mechanism, movable touch knife is isolated, switch movable contact knife system is selectively contacted with isolation quiescent contacting knife and ground connection quiescent contacting knife, described transmission mechanism one end is connected with the dynamic matching piece, the transmission mechanism other end is connected with the movable touch knife of being isolated, the rotation of the transmission mechanism is driven by the dynamic matching piece, to pull the isolation movable touch knife to rotate.The beneficial effects of the present invention are: tri-station isolating switch of the invention possesses the independent disconnecting switch of three-phase, it avoids and alternate causes irrecoverable failure of insulation due to high-voltage breakdown, so, there is no lead to the problem of security risk due to insulation ag(e)ing, simultaneously, tri-station isolating switch configurates rationally, so that whole will not occupy redundant space.
Description
Technical field
The present invention relates to technical field of electric power more particularly to a kind of tri-station isolating switch and atmospheric closed permanent-magnet breaker
Cabinet.
Background technique
Enhancing with people to environmental consciousness, environmentally friendly gas-insulated or even air in power transmission and distribution power equipment
Insulated switch cabinet is applied also more and more common, and the insulating requirements of the disconnecting switch of corresponding air insulation are relatively high, isolation
The fracture of switch, experiment alternate and that industrial frequency withstand voltage should all meet relevant voltage grade in the case where atmospheric air insulate environment over the ground are wanted
It asks.
At present on the market medium-pressure or high pressure loop-network switch cabinet in actual use, the isolation fracture both ends of disconnecting switch three-phase
Mostly it is to be separately fixed on two shaft insulations, the phase insulation requirement of switch is met by the insulation performance of shaft insulation, by exhausted
The insulation performance of edge axis is mostly the phase insulation requirement that can satisfy switch, once but switch insulation aging, under insulation performance
Drop is caused alternate or relatively irrecoverable failure of insulation due to high-voltage breakdown, then can made to personal safety and power supply safety
At significant threat.
So industry medium-pressure or high pressure switchgear is in actual use, the operation axis of some disconnecting switch is in view of machinery
Intensity uses metal material, and in order to reach its dielectric strength with live part, usually by increasing volume of switch come real
It is existing, increase insulation distance using volume of switch is increased, although dielectric strength can be increased, but also will increase switchgear
Outer dimension, to increase the production cost and cost of land of switchgear.
Summary of the invention
The present invention provides a kind of tri-station isolating switch, including switch movable contact knife system and stationary contact knife system, quiescent contacting knifes
Device has the isolation quiescent contacting knife for being separated from each other setting and a ground connection quiescent contacting knife, and the switch movable contact knife system includes dynamic cooperation
Part, transmission mechanism, isolation movable touch knife, switch movable contact knife system is selectively contacted with isolation quiescent contacting knife and ground connection quiescent contacting knife, described
Transmission mechanism one end is connected with the dynamic matching piece, and the transmission mechanism other end is connected with the movable touch knife of being isolated, and passes through institute
State matching piece and drive the rotation of the transmission mechanism, so that the isolation movable touch knife be pulled to rotate, isolation movable touch knife be isolated
When quiescent contacting knife contacts, it is in disconnecting switch "on" position and is closed when isolation movable touch knife and ground connection quiescent contacting knife contact in earthing switch
Lock state, isolation movable touch knife are located between isolation quiescent contacting knife and ground connection quiescent contacting knife, and when three is mutually spaced, are in separating brake shape
State.
As a further improvement of the present invention, the transmission mechanism includes switch spindle, main shaft connecting lever, connecting plate, described
Switch spindle is connected with the dynamic matching piece, and main shaft connecting lever one end is connected with the switch spindle, and the main shaft connecting lever is another
One end is connected with the connecting plate, and the connecting plate is equipped with the isolation movable touch knife, drives main shaft connecting lever by dynamic matching piece
It is rotated with switch spindle, so that connecting plate be pulled to drive isolation movable touch knife rotation.
As a further improvement of the present invention, the switch movable contact knife system includes fixed link, isolation movable touch knife relative to
Fixed link rotation；Isolation quiescent contacting knife and fixed link are equipped with insulating part；Switch movable contact knife system includes fixed block and fixed pin, every
Be fixed on a fixed block from movable touch knife, by fixed block make be isolated movable touch knife and connecting plate bridge joint fix, fixed block be isolated
It is fixed between movable touch knife by a fixed pin.
As a further improvement of the present invention, the side that movable touch knife is isolated is equipped with a wind-force plate, and wind-force plate is set to isolation
Movable touch knife drives wind-force plate to be displaced towards ground connection quiescent contacting knife and makes that dynamic touching is isolated close to the side of isolation quiescent contacting knife, isolation movable touch knife
When knife and ground connection quiescent contacting knife contact, it is in gate-dividing state, before isolation movable touch knife is contacted with ground connection quiescent contacting knife, wind-force plate is close to ground connection
When quiescent contacting knife is displaced, wind-force plate generates a wind-force to ground connection quiescent contacting knife, and wind-force plate is arc, and proximity is leaned on by the both ends court of wind-force plate
The direction of ground quiescent contacting knife is bent.
As a further improvement of the present invention, tri-station isolating switch includes frame, and stationary contact knife system is set to frame, fixed
Frame is fixed in one end of bar, and dynamic matching piece, switch spindle, isolation quiescent contacting knife and ground connection quiescent contacting knife are both secured to frame；This three
Station disconnecting switch further includes fixing seat, and fixing seat is fixed on frame, and fixing seat is towards being extended with two opposite extensions in frame
Portion, each extension have a perforation, and switch spindle is punched through fixing seat across two and is fixed on frame；Movable touch knife position is isolated
Between isolation quiescent contacting knife and ground connection quiescent contacting knife, isolation quiescent contacting knife is located at the upper left side of isolation movable touch knife, and ground connection quiescent contacting knife is located at
The lower right of movable touch knife is isolated.
As a further improvement of the present invention, connecting plate is arc setting, and the both ends of connecting plate are towards far from isolation quiescent contacting knife
Direction bending, and connecting plate be equipped with multiple through-holes.
As a further improvement of the present invention, switch movable contact knife system is three, and corresponding stationary contact knife system quantity is three
A, in three switch movable contact knife systems, the distance between two neighboring switch movable contact knife system is greater than 125mm, and each switch
In movable touch knife device, the distance between isolation quiescent contacting knife and isolation movable touch knife are greater than 125mm, isolation movable touch knife and ground connection quiescent contacting knife
The distance between be greater than 125mm.
The present invention also provides a kind of atmospheric closed permanent-magnet breaker cabinet, which includes operation
Interrupter and power tri-station isolating switch of the present invention, the operation isolation mechanism include a mechanism foreboard and a machine
Structure back plate is separated from each other setting, has an accommodation space, the both ends of an isolated operation axis, one between mechanism foreboard and mechanism back plate
The both ends of mechanism main shaft and the both ends of a ground connection operating shaft are individually fixed in mechanism foreboard and mechanism back plate, and isolated operation axis,
The middle section of mechanism main shaft and ground connection operating shaft is respectively positioned in accommodation space, an isolation active connecting lever and a driven connecting lever of isolation
It is both secured to the isolated operation axis, an isolation connecting lever connection sheet is mutually flexibly connected with driven connecting lever is isolated, isolation connecting lever connection
Driven connecting lever is isolated in the connection of piece one end, and other end bindiny mechanism main shaft, a ground connection active connecting lever and a driven connecting lever of ground connection are solid
Due to the ground connection operating shaft, an earthed crank arm connection sheet is mutually flexibly connected with driven connecting lever is grounded, earthed crank arm connection sheet one
End connection is grounded driven connecting lever, other end bindiny mechanism main shaft, and mechanism main shaft is equipped with an irregular spindle cam, and connecting lever is isolated
Connection sheet and earthed crank arm connection sheet are flexibly connected the spindle cam, connection isolation active connecting lever and the one of ground connection active connecting lever
Connecting rod drives the movement of isolation active connecting lever and compression by rotation isolated operation axis in being arranged main force's spring outside connecting rod
Main force's spring, main force's springback push isolation active connecting lever move and the driven connecting lever of isolation driven to rotate, by rotation every
Isolation connecting lever connection sheet and then lead agency main axis are driven from driven connecting lever, ground connection master is driven by rotation ground connection operating shaft
Dynamic connecting lever movement and compression main force's spring, main force's springback push ground connection active connecting lever to move and the driven connecting lever of ground connection are driven to turn
It is dynamic, earthed crank arm connection sheet lead agency main axis is driven by the driven connecting lever of the ground connection of rotation；The mechanism main shaft
It is connected with the dynamic matching piece, drives the dynamic matching piece to be rotated by the rotation of the mechanism main shaft.
It is as a further improvement of the present invention, fixed between mechanism foreboard and mechanism back plate that there are four support column, four branch
Dagger is located at isolated operation axis, mechanism main shaft and the outside for being grounded operating shaft；Isolation active connecting lever is relatively isolated driven turn
The nearly mechanism foreboard of arm rest is isolated between active connecting lever and the driven connecting lever of isolation and mutually links, ground connection active connecting lever relative to ground from
Dynamic connecting lever is grounded between active connecting lever and the driven connecting lever of ground connection and mutually links close to mechanism foreboard；It is isolated the one of connecting lever connection sheet
The driven connecting lever of isolation is fixed on by a positioning pin activity in end, and the other end is fixed on mechanism main shaft by a positioning pin activity, connects
The driven connecting lever of ground connection is fixed on by a positioning pin activity in one end of ground connecting lever connection sheet, and the other end is solid by a positioning pin activity
Due to mechanism main shaft；The both ends that connecting lever connection sheet is isolated are bent towards close to the intermediate of accommodation space, and the two of earthed crank arm connection sheet
It holds towards the intermediate bending close to accommodation space；Isolated operation axis and ground connection operating shaft are symmetrical arranged with respect to mechanism main shaft, and are isolated
Active connecting lever is with the identical rotation direction of ground connection active crank arm structure on the contrary, driven connecting lever is isolated and the driven crank arm structure of ground connection is identical
Rotation direction on the contrary, isolation connecting lever connection sheet that the identical rotation direction of chip architecture is connected with earthed crank arm is opposite.
As a further improvement of the present invention, isolation connecting lever connection sheet is equipped with one first notch, and earthed crank arm connection sheet is set
There is one second notch, the small one end of spindle cam width is flexibly connected isolation connecting lever connection sheet and earthed crank arm connection sheet, main shaft
The big one end bindiny mechanism main shaft of cam width, by the way that connecting lever connection sheet lead agency main axis, spindle cam is isolated
The big one end of width and the first notch are close to each other up to disconnecting switch combined floodgate, pass through earthed crank arm connection sheet lead agency
Main axis, the big one end of spindle cam width and the second notch are close to each other until earthing switch combined floodgate.
The beneficial effects of the present invention are: in tri-station isolating switch of the invention, there are three stationary contact knife systems and right for tool
Answer the three switch movable contact knife systems in ground, each stationary contact knife system have be separated from each other the isolation quiescent contacting knife that is set in switchgear and
It is grounded quiescent contacting knife, each switch movable contact knife system is selectively contacted with isolation quiescent contacting knife and ground connection quiescent contacting knife, by moving matching piece
Drive main shaft connecting lever rotated with switch spindle, and pull connecting plate drive isolation movable touch knife rotation, isolation movable touch knife be isolated it is quiet
When contact knife contacts, it is in disconnecting switch "on" position and closes a floodgate when isolation movable touch knife and ground connection quiescent contacting knife contact in earthing switch
State, isolation movable touch knife are located between isolation quiescent contacting knife and ground connection quiescent contacting knife, and when three is mutually spaced, are in separating brake shape
State possesses the independent disconnecting switch of three-phase, avoid it is alternate irrecoverable failure of insulation is caused due to high-voltage breakdown, in this way,
There is no leading to the problem of security risk due to insulation ag(e)ing, meanwhile, tri-station isolating switch configurates rationally, so that
Entirety will not occupy redundant space.
Detailed description of the invention
Fig. 1 is the schematic diagram of atmospheric closed permanent-magnet breaker cabinet of the invention.
Fig. 2 is that this bright tri-station isolating switch is located at the front view in frame.
Fig. 3 is that the bright tri-station isolating switch of book is located at the bottom view in frame.
Fig. 4 is that the bright tri-station isolating switch of book is located at the perspective view in frame.
Fig. 5 is the perspective view of fixing seat in tri-station isolating switch of the present invention.
Fig. 6 be Fig. 5 in along the sectional view of A-A.
Fig. 7 is the front cross sectional view of operation of the present invention interrupter.
Fig. 8 is the sectional view of operation of the present invention interrupter.
Fig. 9 is the gate-dividing state schematic diagram of operation of the present invention interrupter.
Figure 10 is the "on" position schematic diagram of operation of the present invention interrupter.
Figure 11 is the contact of earth status diagram of operation of the present invention interrupter.
Specific embodiment
As shown in Figure 1, applying to power transmission and distribution power equipment the invention discloses a kind of atmospheric closed permanent-magnet breaker cabinet
In, the place of switching load of different nature and frequent operation, for electric utilities such as industrial and mineral, enterprise, power plant and substations
Protection and control be used, can in substation before outlet switch movement rapidly, it is reliable to exclude backbone or branched line is instantaneous
Failure and permanent fault, and be overlapped rapidly and restore electricity after Failure elimination, while being mountable to loop grid, radioactivity line
Road, in branched line and user terminal route.
Atmospheric closed permanent-magnet breaker cabinet includes a cabinet body 1, a permanent-magnet breaker 2, a combined floodgate knob set on the cabinet body 1
(unlabeled, similarly hereinafter), a separating brake knob (unlabeled, similarly hereinafter), tri-station isolating switch 3, emergency brake-disconnecting mechanism for breaker 4 and behaviour
Make interrupter 5, permanent-magnet breaker 2 is integration setting, can only be disconnected to the permanent magnetism respectively by combined floodgate knob and separating brake knob
Road device 2 carries out electric switch-on and electronic separating brake certainly in case of emergency can be by emergency brake-disconnecting mechanism for breaker 4 to this
Permanent-magnet breaker 2 carries out emergency manual separating brake, and such security performance is ensured that operation isolation mechanism 5 keeps apart three stations
Close 3 closed a floodgate, control and the panel 11 of separating brake and ground connection, combined floodgate, separating brake and the ground connection shape of tri-station isolating switch 3
State is shown in the panel 11, and operator is facilitated to observe.
The upper end of cabinet body 1 has a low-pressure chamber 12, and low-pressure chamber 12 is set as staircase structural model, it is vacant that cabinet body 1 is utilized
Space, the reduced overall outer dimension of atmospheric closed permanent-magnet breaker cabinet, meets trend small in size in market development.
There are three individually for the mutually independent insulating supporting of three-phase in atmospheric closed permanent-magnet breaker cabinet, i.e. isolation quiescent contacting knife 31
Insulator individually support, to improve insulation performance, and it is conventional be installed on a shaft insulation, on/off switch movement is the same
, all it is to drive synchroswitching, flannelette separating brake, and three alternate minimum ranges to be greater than 125mm by main shaft, improves alternate
Voltage endurance capability avoids the failure of phase insulation caused by puncturing due to phase insulation, using integrated permanent-magnet breaker, closing position
It sets and is latched using permanent magnetism, open position uses Spring lock catch, is completed point, closing operation with a coil 25, meets vacuum forever
Magnetic circuit breaker 2 needs biggish retentivity at the end of closing a floodgate, and the characteristic compared with high acceleration is needed when separating brake starts, and overcomes bullet
The deficiency of spring operating mechanism and bistable state permanent magnet operating mechanism, permanent-magnet breaker 2 uses monostable permanent-magnet operating mechanism, using list
Stable state permanent-magnet operating mechanism principle is moved by the cooperation of electromagnet 21 and coil 25 using straight linear, and biography is significantly reduced
The loss of power during dynamic, mechanical fatigue is dropped to abrasion lower, can provide closing speed and opening velocity appropriate, have
Excellent mechanical performance and electric property, this motor pattern can the more superior transmitting for carrying out power, such permanent-magnet breaker 2 switchs
Belong to fast switch-dividing, Switch main body opening time≤5ms, shorter opening time has embodied this switch in transmission & distribution electric fault
When or the sensitivity reacted when receiving action signal, sensitivity it is higher when there is line fault for downstream electrical equipment
Relatively reliable safety can satisfy the requirement in atmospheric air environment by protection, also eliminate traditional in background technique
The problems of spring energy pre-storage mechanism, components have lacked compared with traditional mechanism much greatly improves the reliability of mechanism,
Structure is simple, high-efficient and at low cost.
As shown in figures 2-6, tri-station isolating switch 3 includes switch movable contact knife system 301 and stationary contact knife system, quiescent contacting knife dress
It sets with the isolation quiescent contacting knife 31 for being separated from each other setting and a ground connection quiescent contacting knife 319, the switch movable contact knife system 1 includes dynamic
Matching piece 321, transmission mechanism, isolation movable touch knife 305, switch movable contact knife system 1 selectively be isolated quiescent contacting knife 31 and be grounded it is quiet
Contact knife 319 contacts, and described transmission mechanism one end is connected with the dynamic matching piece 321, the transmission mechanism other end with it is described every
It is connected from movable touch knife 305, the rotation of the transmission mechanism is driven by the dynamic matching piece 321, to pulls the isolation dynamic
Contact knife 305 rotates, isolation movable touch knife 305 with when quiescent contacting knife 31 be isolated contacting, in disconnecting switch "on" position, isolation movable touch knife
305 with ground connection quiescent contacting knife 319 contact when, be in earthing switch "on" position, isolation movable touch knife 305 be located at isolation 31 He of quiescent contacting knife
It is grounded between quiescent contacting knife 319, and when three is mutually spaced, is in gate-dividing state.
Transmission mechanism includes switch spindle 322, main shaft connecting lever 302, connecting plate 303, and the switch spindle 322 is moved with described
Matching piece 321 is connected, and described 302 one end of main shaft connecting lever is connected with the switch spindle 322,302 other end of main shaft connecting lever
It is connected with the connecting plate 303, the connecting plate 303 is equipped with the isolation movable touch knife 305, is driven by dynamic matching piece 321
Main shaft connecting lever 302 is rotated with switch spindle 322, to pull connecting plate 303 that isolation movable touch knife 305 is driven to rotate.
The side that movable touch knife 305 is isolated is equipped with a wind-force plate 307.Movable touch knife 305, which is isolated, drives wind-force plate 14 quiet towards being grounded
When contact knife 319 is displaced and makes isolation movable touch knife 305 and ground connection quiescent contacting knife 319 to contact, operation isolation mechanism is in earthing switch
"on" position, before isolation movable touch knife 305 is contacted with ground connection quiescent contacting knife 319, when wind-force plate 307 is displaced close to ground connection quiescent contacting knife 319,
307 pairs of ground connection quiescent contacting knifes 319 of wind-force plate generate a wind-force, because when isolation movable touch knife 305 and ground connection quiescent contacting knife 319 are grounded,
Need to unload residual voltage, so need arc extinguishing, and 307 pairs of ground connection quiescent contacting knifes 319 of wind-force plate directly just generate it is such a
Wind-force, so that it may which simple and stable solves the problems, such as arc extinguishing.Movable touch knife 305 is isolated and is located at isolation quiescent contacting knife 31 and ground connection quiescent contacting knife
Between 319, and when three is mutually spaced, be in gate-dividing state, the setting of above-mentioned tri-station isolating switch so that isolation, point
Lock is grounded on one, multiple functional, structure is simple, reliable performance, economical and practical.
In three switch movable contact knife systems 301, the distance between two neighboring switch movable contact knife system 301 is greater than 125mm,
And in each switch movable contact knife system 301, the distance between isolation quiescent contacting knife 31 and isolation movable touch knife 305 are greater than 125mm, isolation
Movable touch knife 305 and ground connection the distance between quiescent contacting knife 319 are greater than 125mm, are designed in this way, tri-station isolating switch divide-shut brake open away from
Greatly, being isolated between quiescent contacting knife 31 and isolation movable touch knife 305 is isolation fracture, is isolated between movable touch knife 305 and ground connection quiescent contacting knife 319
To be grounded fracture, the air insulation distance both greater than 125mm of isolation fracture and ground connection fracture can be resistance to by 48KV in atmospheric air
Pressure test.
Frame 312 is with a bottom wall 313, the two side walls 314 being mutually arranged, and before the one of connection two side walls 314
Wall 315 and a rear wall 316, certainly, two side walls 314, antetheca 315 and rear wall 316 are connect with bottom wall 313 downwards, common structure
At an accommodating chamber 317, there is each switch movable contact knife system 1 fixed link 310 to be installed on rear wall 316 and connect isolation movable touch knife
305, isolation movable touch knife 305 is rotated relative to fixed link 310, and isolation quiescent contacting knife 31 is outer and fixed link 310 is equipped with insulating part outside
311, the material of insulating part 311 is the epoxy resin of excellent insulation performance, by the insulating part 311 be sheathed on respectively it is independent every
Outside and fixed link 310 outer from quiescent contacting knife 31, keep three-phase alternate mutually indepedent.Isolation movable touch knife 305 is fixed on a fixed block 308,
By fixed block 308 make be isolated movable touch knife 305 and connecting plate 303 bridge joint fix, fixed block 308 be isolated movable touch knife 305 it
Between it is fixed by a fixed pin 309, structure is simple and convenient.Fixed block 308 and wind-force plate 307 are integrally formed setting, stability
It is good, and form simply, and wind-force plate 307 is set to isolation movable touch knife 305 close to the side of isolation quiescent contacting knife 31, wind-force plate 307 is
The both ends of arc, wind-force plate 307 are bent towards close to the direction of ground connection quiescent contacting knife 319, are convenient for wind concentration, are capable of immediate stability
Realize arc extinguishing.
Frame 312 is fixed in one end of fixed link 310, and dynamic matching piece 321, is isolated quiescent contacting knife 31 and is connect at switch spindle 322
Ground quiescent contacting knife 4 is both secured to frame 312, and isolation quiescent contacting knife 31 is fixed on rear wall 316, and a fixing seat 323 is fixed on frame 312
Rear wall 316, fixing seat 323 have a perforation towards two opposite extensions 324, each extension 324 is extended in frame 312
325, switch spindle 322 passes through the rear wall 316 that frame 312 is fixed in two perforation 325 by fixing seat 323, and so positioning is steady
Fixed and accurate, switch spindle 322 selects insulating materials, its torsional deformation, intermediate position increase the fixation of insulation in order to prevent
Seat 323 avoids switch live part and discharges switch spindle 322, improve the safety of switch, while also reducing isolation
The outer dimension of switch, alleviates switch weight, has saved the production cost and cost of land of switchgear.
The both ends of switch spindle 322 are individually fixed in two side walls 314, and ground connection quiescent contacting knife 319 is fixed on antetheca 315, and
The position that ground connection quiescent contacting knife 319 is fixed on antetheca 315 is fixed on the position of rear wall 316 lower than fixing seat 323, aforementioned each position
Row sets, so that space utilization is best, connecting plate 303 is arc setting, and the both ends of connecting plate 303 are towards far from isolation quiescent contacting knife 31
Direction bending, facilitates operation, and connecting plate 303 is equipped with multiple through-holes 304, while proof strength, can mitigate weight, raising
Working efficiency.
Movable touch knife 305 is isolated close to one end of wind-force plate 307 tool there are two moving contact 306, two moving contacts 306 are opposite to be divided
From setting, and two moving contacts 306 are to tilt upward extended, and wind-force plate 307 is connected to the side of two moving contacts 306,
Quiescent contacting knife 31, which is isolated, has a static contact 318, and static contact 318 is directly to be extended forward, when disconnecting switch is closed a floodgate, static contact
318 are located between two moving contacts 306 and are intermeshed, and ground connection quiescent contacting knife 319 has a grounding contact 320, grounding contact 320
It is to bend downward extended, when earthing switch closes a floodgate, grounding contact 320 is located between two moving contacts 306 and is intermeshed,
The phenomenon that engagement contact can guarantee the stability of contact, be not in hit.Movable touch knife 305 is isolated and is located at isolation quiescent contacting knife 31
Ground connection quiescent contacting knife 319 between, isolation quiescent contacting knife 31 be located at isolation movable touch knife 305 upper left side, ground connection quiescent contacting knife 319 be located at every
Lower right from movable touch knife 305, isolation movable touch knife 305 is located between isolation quiescent contacting knife 31 and ground connection quiescent contacting knife 319, and three is equal
When being spaced apart from each other, operation isolation mechanism is in gate-dividing state, so arranges, is not only not in short circuit phenomenon, can also save
Space.
In above-mentioned tri-station isolating switch 3, switch movable contact knife system 301 selectively be isolated quiescent contacting knife 31 and ground connection stationary contact
Knife 319 contacts, and drives main shaft connecting lever 11 to rotate with switch spindle 322 by dynamic matching piece 321, and connecting plate 303 is pulled to drive
Be isolated movable touch knife 305 rotate, isolation movable touch knife 305 side be equipped with wind-force plate 307, isolation movable touch knife 305 with quiescent contacting knife is isolated
When 31 contact, operation isolation mechanism is in disconnecting switch "on" position, and isolation movable touch knife 305 drives wind-force plate 307 quiet towards being grounded
When contact knife 319 is displaced and makes isolation movable touch knife 305 and ground connection quiescent contacting knife 319 to contact, operation isolation mechanism is in earthing switch
"on" position, before isolation movable touch knife 305 is contacted with ground connection quiescent contacting knife 319, when wind-force plate 307 is displaced close to ground connection quiescent contacting knife 319,
307 pairs of ground connection quiescent contacting knifes 319 of wind-force plate generate a wind-force, generation when making that movable touch knife 305 and close ground connection quiescent contacting knife 319 is isolated
Electric arc dispelled by this wind-force to extinguishing, reach stable arc quenching effect, and will not additionally occupy the space of switchgear, structure letter
It is list, reliable performance, economical and practical.
The tri-station isolating switch 3 possesses the independent disconnecting switch of three-phase, avoids and alternate is caused due to high-voltage breakdown
Irrecoverable failure of insulation improves the reliability of power supply, in this way, there is no generate security risk due to insulation ag(e)ing
Problem, meanwhile, tri-station isolating switch 3 configurates rationally, so that whole will not occupy redundant space.
As illustrated in figures 7-11, operation isolation mechanism 5 includes that mechanism foreboard 501 and mechanism back plate 502 are separated from each other setting, machine
There are an accommodation space 503, the both ends of an isolated operation axis 504, a mechanism main shaft between structure foreboard 501 and mechanism back plate 502
505 both ends and the both ends of a ground connection operating shaft 506 are individually fixed in mechanism foreboard 501 and mechanism back plate 502, and isolated operation
The middle section of axis 504, mechanism main shaft 505 and ground connection operating shaft 506 is respectively positioned in accommodation space 503, mechanism foreboard 501 and machine
Fixed there are four support column 7 between structure back plate 502, four support columns 7 are located at isolated operation axis 504,505 and of mechanism main shaft
It is grounded the outside of operating shaft 506, i.e. four support columns 7 are located at four corners of mechanism foreboard 501 and mechanism back plate 502
Place, in this way can be balanced by fixed power.
One isolation active connecting lever 8 and a driven connecting lever 9 of isolation are both secured to the isolated operation axis 504, and an isolation connecting lever connects
Contact pin 10 is mutually flexibly connected with driven connecting lever 9 is isolated, and driven connecting lever 9 is isolated in the connection of isolation 10 one end of connecting lever connection sheet, another
Hold bindiny mechanism's main shaft 505.Isolation active connecting lever 8 is relatively isolated driven connecting lever 9 close to mechanism foreboard 501, and active connecting lever 8 is isolated
Mutually link being isolated between driven connecting lever 9, be isolated one end of connecting lever connection sheet 10 by 14 activity of a positioning pin be fixed on every
From driven connecting lever 9, the other end is fixed on mechanism main shaft 505 by 14 activity of a positioning pin, and the both ends of connecting lever connection sheet 10 are isolated
Towards the intermediate bending close to accommodation space 503.
One ground connection active connecting lever 507 and a driven connecting lever 508 of ground connection are both secured to the ground connection operating shaft 506, and a ground connection is turned
Arm connection sheet 13 is mutually flexibly connected with driven connecting lever 508 is grounded, and the connection of 13 one end of earthed crank arm connection sheet is grounded driven connecting lever
508, other end bindiny mechanism main shaft 505.Be grounded active connecting lever 507 relative to ground driven connecting lever 508 close to mechanism foreboard 501,
It mutually links between ground connection active connecting lever 507 and the driven connecting lever 508 of ground connection, one end of earthed crank arm connection sheet 13 passes through a positioning
The driven connecting lever 508 of ground connection is fixed in 14 activity of pin, and the other end is fixed on mechanism main shaft 505 by 14 activity of a positioning pin, is grounded
The both ends of connecting lever connection sheet 13 are bent towards close to the intermediate of accommodation space 503.
Isolated operation axis 504 and ground connection operating shaft 506 are symmetrical arranged with respect to mechanism main shaft 505, and 8 He of active connecting lever is isolated
The identical rotation direction of ground connection 507 structure of active connecting lever is on the contrary, be isolated driven connecting lever 9 and driven identical turn of 508 structure of connecting lever of ground connection
Move it is contrary, be isolated connecting lever connection sheet 10 with 13 structure of earthed crank arm connection sheet identical rotation direction on the contrary, side easy to operate
Just, and since structure is identical, when processing, is also conducive to produce in batches, reduces production cost.
Mechanism main shaft 505 is equipped with an irregular spindle cam 15, and connecting lever connection sheet 10 and earthed crank arm connection sheet is isolated
13 are flexibly connected the spindle cam 15.Mechanism main shaft 505 is equipped with irregular spindle cam 15, and 10 He of connecting lever connection sheet is isolated
Earthed crank arm connection sheet 13 is flexibly connected the spindle cam 15, by spindle cam 15 irregular on mechanism main shaft 505 come
Realize the acquisition of microswitch divide-shut brake signal.Connecting lever connection sheet 10 is isolated and is equipped with one first notch 101,15 width of spindle cam
Small one end is flexibly connected isolation connecting lever connection sheet 10, the big one end bindiny mechanism main shaft 505 of 15 width of spindle cam, by every
From connecting lever connection sheet 10 and then lead agency main shaft 505 rotates, and the big one end of 15 width of spindle cam and the first notch 101 are mutual
Close to until disconnecting switch is closed a floodgate, so that the biggish discrepant divide-shut brake angle of corresponding disconnecting switch, presses off to meet height
Close the larger fracture that the environmentally friendly gas-insulated of air, nitrogen etc. in cabinet requires open away from requirement.Earthed crank arm connection sheet 13 is equipped with one
Second notch 131, the small one end of 15 width of spindle cam are flexibly connected earthed crank arm connection sheet 13, pass through earthed crank arm connection sheet
13 rotations of lead agency main shaft 505 in turn, the big one end of 15 width of spindle cam are close to each other with the second notch 131 until ground connection
Switch closes a floodgate, so that the biggish discrepant divide-shut brake angle of corresponding disconnecting switch, to meet air in high-tension switch cabinet, nitrogen
Gas etc. environmental protection gas-insulated require larger fracture open away from requirement.
Connection isolation active connecting lever 8 and the connecting rod 16 for being grounded active connecting lever 507 are arranged a main force in connecting rod 16 outside
Spring 17 drives the movement of isolation active connecting lever 8 and compression main force's spring 17, main force's spring 17 by rotation isolated operation axis 504
Rebound pushes isolation active connecting lever 8 to move and the driven connecting lever 9 of isolation is driven to rotate, and is driven by the driven connecting lever 9 of the isolation of rotation
Connecting lever connection sheet 10 is isolated and then lead agency main shaft 505 rotates, ground connection active connecting lever is driven by rotation ground connection operating shaft 506
507 movements and compression main force's spring 17, the rebound of main force's spring 17 push ground connection active connecting lever 507 to move and drive ground connection is driven to turn
Arm 508 rotates, and drives 505 turns of 13 lead agency main shaft of earthed crank arm connection sheet by the driven connecting lever 508 of the ground connection of rotation
It is dynamic.
Figure 10 displaying is isolation "on" position, specifically: in the case where operation isolation mechanism 5 is in gate-dividing state, with operation
Handle operation isolation operating shaft 504 is rotated clockwise, and isolation active connecting lever 8 and then rotates together, while can compress the main force
Spring 17, after main force's spring 17 is compressed to most short position, under the spring-force driven dual of main force's spring 17, main force's spring 17 starts
Rebound, and then push isolation active connecting lever 8 along 504 quick rotation of isolated operation axis, be at this moment isolated active connecting lever 8 drive isolation from
Dynamic connecting lever 9 is rotated clockwise.Driven connecting lever 9 is isolated to carry out further through isolation 10 lead agency main shaft 505 of connecting lever connection sheet
It rotates clockwise, at this point, operation isolation mechanism 5 is in isolation "on" position.And be isolated the process of separating brake with the mistake closed a floodgate is isolated
Journey is opposite.
Figure 11 displaying is contact of earth state, specifically: in the case where operation isolation mechanism 5 is in gate-dividing state, with operation
Handle operational grounding operating shaft 506 is rotated counterclockwise, and ground connection active connecting lever 507 and then rotates together, while can compress master
Power spring 17, after main force's spring 17 is compressed to most short position, under the spring-force driven dual of main force's spring 17, main force's spring 17 is opened
Begin to rebound, and then push ground connection active connecting lever 507 along ground connection 506 quick rotation of operating shaft, is at this moment grounded the drive of active connecting lever 507
Driven connecting lever 508 is grounded to be rotated counterclockwise.Driven connecting lever 508 is grounded further through 13 lead agency master of earthed crank arm connection sheet
Axis 505 is rotated counterclockwise, at this point, operation isolation mechanism 5 is in contact of earth state.And it is grounded process and the ground connection of separating brake
The process of combined floodgate is opposite.
Mechanism main shaft 505 is connected with dynamic matching piece 321, drives dynamic matching piece 321 to carry out by the rotation of mechanism main shaft 505
Rotation so that isolation movable touch knife 305 be pulled to rotate, and then realizes that tri-station isolating switch 3 closes in operation isolation mechanism 5
Lock, separating brake and the control of ground connection.
In aforesaid operations interrupter 5, the movement of isolation active connecting lever 8 and compression are driven by rotation isolated operation axis 504
Main force's spring 17, the rebound of main force's spring 17 pushes isolation active connecting lever 8 to move and the driven connecting lever 9 of isolation is driven to rotate, by turning
The driven connecting lever 9 of dynamic isolation drives isolation connecting lever connection sheet 10 and then lead agency main shaft 505 rotates, and passes through rotation ground connection operation
Axis 506 drives the movement of ground connection active connecting lever 507 and compression main force's spring 17, and the rebound of main force's spring 17 pushes ground connection active connecting lever
507 move and the driven connecting lever 508 of ground connection are driven to rotate, and drive earthed crank arm connection sheet by the driven connecting lever 508 of the ground connection of rotation
13 rotations of lead agency main shaft 505 in turn, the linkage structure rotated by aforementioned synchronization, so that accordingly disconnecting switch is biggish has
The divide-shut brake angle of difference is opened to meet the larger fracture that the environmentally friendly gas-insulated such as air in high-tension switch cabinet, nitrogen requires
Away from requirement, while 5 structure of operation isolation mechanism is simple, compact, operation are reliable.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (10)
1. a kind of tri-station isolating switch, it is characterised in that: including switch movable contact knife system and stationary contact knife system, stationary contact knife system
With the isolation quiescent contacting knife for being separated from each other setting and a ground connection quiescent contacting knife, the switch movable contact knife system include dynamic matching piece,
Transmission mechanism, isolation movable touch knife, switch movable contact knife system are selectively contacted with isolation quiescent contacting knife and ground connection quiescent contacting knife, the transmission
Mechanism one end is connected with the dynamic matching piece, and the transmission mechanism other end is connected with the movable touch knife of being isolated, by described dynamic
Matching piece drives the rotation of the transmission mechanism, so that the isolation movable touch knife be pulled to rotate, isolation movable touch knife with stationary contact is isolated
When knife contacts, it is in disconnecting switch "on" position and is in earthing switch combined floodgate shape when isolation movable touch knife and ground connection quiescent contacting knife contact
State, isolation movable touch knife are located between isolation quiescent contacting knife and ground connection quiescent contacting knife, and when three is mutually spaced, are in gate-dividing state.
2. tri-station isolating switch according to claim 1, it is characterised in that: the transmission mechanism include switch spindle,
Main shaft connecting lever, connecting plate, the switch spindle are connected with the dynamic matching piece, main shaft connecting lever one end and the switch spindle
It is connected, the main shaft connecting lever other end is connected with the connecting plate, and the connecting plate is equipped with the isolation movable touch knife, by dynamic
Matching piece drives main shaft connecting lever to rotate with switch spindle, so that connecting plate be pulled to drive isolation movable touch knife rotation.
3. tri-station isolating switch according to claim 2, it is characterised in that: the switch movable contact knife system includes fixing
Bar, isolation movable touch knife are rotated relative to fixed link；Isolation quiescent contacting knife and fixed link are equipped with insulating part；Switch movable contact knife system packet
Include fixed block and fixed pin, isolation movable touch knife is fixed on a fixed block, by fixed block to be isolated movable touch knife with connect slab bridge
Connect fixation, fixed block is fixed by a fixed pin with being isolated between movable touch knife.
4. tri-station isolating switch according to claim 1, it is characterised in that: the side that movable touch knife is isolated is equipped with a wind-force
Plate, and wind-force plate is set to isolation movable touch knife close to the side of isolation quiescent contacting knife, isolation movable touch knife drives wind-force plate towards ground connection stationary contact
When knife is displaced and makes isolation movable touch knife and ground connection quiescent contacting knife to contact, it is in gate-dividing state, isolation movable touch knife and ground connection quiescent contacting knife
Before contact, when wind-force plate is close to ground connection quiescent contacting knife displacement, wind-force plate generates a wind-force to ground connection quiescent contacting knife, and wind-force plate is arc
The both ends of shape, wind-force plate are bent towards close to the direction of ground connection quiescent contacting knife.
5. tri-station isolating switch according to claim 3, it is characterised in that: tri-station isolating switch includes frame, quiet
Contact knife device is set to frame, and frame is fixed in one end of fixed link, and it is quiet to move matching piece, switch spindle, isolation quiescent contacting knife and ground connection
Contact knife is both secured to frame；The tri-station isolating switch further includes fixing seat, and fixing seat is fixed on frame, and fixing seat is towards in frame
Two opposite extensions are extended with, each extension has a perforation, and it is solid that switch spindle is punched through fixing seat across two
Due to frame；Movable touch knife is isolated to be located between isolation quiescent contacting knife and ground connection quiescent contacting knife, isolation quiescent contacting knife is located at isolation movable touch knife
Upper left side, ground connection quiescent contacting knife are located at the lower right of isolation movable touch knife.
6. tri-station isolating switch according to claim 2, it is characterised in that: connecting plate is arc setting, connecting plate
Both ends are bent towards the direction far from isolation quiescent contacting knife, and connecting plate is equipped with multiple through-holes.
7. tri-station isolating switch according to claim 1, it is characterised in that: switch movable contact knife system is three, corresponding
Stationary contact knife system quantity be three, in three switch movable contact knife systems, the distance between two neighboring switch movable contact knife system
Greater than 125mm, and in each switch movable contact knife system, the distance between isolation quiescent contacting knife and isolation movable touch knife are greater than 125mm, every
It is greater than 125mm from the distance between movable touch knife and ground connection quiescent contacting knife.
8. a kind of atmospheric closed permanent-magnet breaker cabinet, it is characterised in that: the atmospheric closed permanent-magnet breaker cabinet includes operation isolation
Mechanism and the described in any item tri-station isolating switch of claim 1 to 7, the operation isolation mechanism include a mechanism foreboard
It is separated from each other setting with a mechanism back plate, there is an accommodation space between mechanism foreboard and mechanism back plate, an isolated operation axis
The both ends at both ends, the both ends of a mechanism main shaft and a ground connection operating shaft are individually fixed in mechanism foreboard and mechanism back plate, and are isolated
The middle section of operating shaft, mechanism main shaft and ground connection operating shaft is respectively positioned in accommodation space, an isolation active connecting lever and an isolation
Driven connecting lever is both secured to the isolated operation axis, and an isolation connecting lever connection sheet is mutually flexibly connected with driven connecting lever is isolated, is isolated
Driven connecting lever is isolated in the connection of connecting lever connection sheet one end, and other end bindiny mechanism main shaft, a ground connection active connecting lever and a ground connection are driven
Connecting lever is both secured to the ground connection operating shaft, and an earthed crank arm connection sheet is mutually flexibly connected with driven connecting lever is grounded, earthed crank arm
The connection of connection sheet one end is grounded driven connecting lever, other end bindiny mechanism main shaft, and mechanism main shaft is equipped with an irregular spindle cam,
Isolation connecting lever connection sheet and earthed crank arm connection sheet are flexibly connected the spindle cam, and connection isolation active connecting lever and ground connection are actively
One connecting rod of connecting lever drives isolation active connecting lever fortune by rotation isolated operation axis in being arranged main force's spring outside connecting rod
Dynamic and compression main force's spring, main force's springback push isolation active connecting lever to move and drive the driven connecting lever rotation of isolation, pass through
The driven connecting lever of the isolation of rotation drives isolation connecting lever connection sheet and then lead agency main axis, is grounded operating shaft band by rotation
Dynamic ground connection active connecting lever movement and compression main force's spring, main force's springback push ground connection active connecting lever move and drive be grounded from
Dynamic connecting lever rotation drives earthed crank arm connection sheet lead agency main axis by the driven connecting lever of the ground connection of rotation；It is described
Mechanism main shaft is connected with the dynamic matching piece, drives the dynamic matching piece to be rotated by the rotation of the mechanism main shaft.
9. atmospheric closed permanent-magnet breaker cabinet according to claim 8, it is characterised in that: mechanism foreboard and mechanism back plate it
Between it is fixed there are four support column, four support columns are located at isolated operation axis, mechanism main shaft and the outside for being grounded operating shaft；Every
Driven connecting lever is relatively isolated close to mechanism foreboard from active connecting lever, is isolated between active connecting lever and the driven connecting lever of isolation and is mutually interconnected
Dynamic, relative to ground driven connecting lever is grounded phase between active connecting lever and the driven connecting lever of ground connection close to mechanism foreboard to ground connection active connecting lever
Mutually linkage；The driven connecting lever of isolation is fixed on by a positioning pin activity in one end that connecting lever connection sheet is isolated, and the other end passes through certain
Mechanism main shaft is fixed in position pin activity, and one end of earthed crank arm connection sheet is fixed on by a positioning pin activity is grounded driven turn
Arm, the other end are fixed on mechanism main shaft by a positioning pin activity；The both ends of connecting lever connection sheet are isolated towards close to accommodation space
The both ends of centre bending, earthed crank arm connection sheet are bent towards close to the intermediate of accommodation space；Isolated operation axis and ground connection operating shaft
Opposite mechanism main shaft is symmetrical arranged, and active connecting lever and the identical rotation direction of ground connection active crank arm structure is isolated on the contrary, be isolated from
Dynamic connecting lever rotation direction identical with the driven crank arm structure of ground connection is on the contrary, isolation connecting lever connection sheet connects chip architecture phase with earthed crank arm
It is opposite with rotation direction.
10. atmospheric closed permanent-magnet breaker cabinet according to claim 9, it is characterised in that: isolation connecting lever connection sheet is equipped with
One first notch, earthed crank arm connection sheet are equipped with one second notch, and the small one end of spindle cam width is flexibly connected isolation connecting lever
Connection sheet and earthed crank arm connection sheet, the big one end bindiny mechanism main shaft of spindle cam width, by isolation connecting lever connection sheet into
And lead agency main axis, the big one end of spindle cam width and the first notch are close to each other up to disconnecting switch combined floodgate, lead to
Earthed crank arm connection sheet and then lead agency main axis are crossed, the big one end of spindle cam width and the second notch are close to each other straight
It closes a floodgate to earthing switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910081847.XA CN109698089A (en) | 2019-01-28 | 2019-01-28 | A kind of tri-station isolating switch and atmospheric closed permanent-magnet breaker cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910081847.XA CN109698089A (en) | 2019-01-28 | 2019-01-28 | A kind of tri-station isolating switch and atmospheric closed permanent-magnet breaker cabinet |
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| Publication Number | Publication Date |
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| CN109698089A true CN109698089A (en) | 2019-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910081847.XA Pending CN109698089A (en) | 2019-01-28 | 2019-01-28 | A kind of tri-station isolating switch and atmospheric closed permanent-magnet breaker cabinet |
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| CN (1) | CN109698089A (en) |
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| CN110491715A (en) * | 2019-09-09 | 2019-11-22 | 湖北省电力装备有限公司 | Gas-filling cabinet three-station structure |
| CN110942945A (en) * | 2019-11-06 | 2020-03-31 | 南瑞智能配电技术有限公司 | Load switch provided with high-standard grounding closing capacity isolator |
| CN110993417A (en) * | 2019-11-06 | 2020-04-10 | 南瑞智能配电技术有限公司 | Breaker switch provided with high-standard grounding switch-on/off capacity isolating switch |
| CN112201516A (en) * | 2020-10-29 | 2021-01-08 | 深圳市英豪电力科技有限公司 | Three-station isolation grounding switch mechanism |
| CN114050081A (en) * | 2021-11-11 | 2022-02-15 | 许昌许继软件技术有限公司 | Isolating switch |
| CN115602480A (en) * | 2022-12-12 | 2023-01-13 | 石家庄科林电气设备有限公司（Cn） | Three-position switch and three-position environment-friendly gas combined electric appliance ring main unit |
| CN116031766A (en) * | 2023-03-29 | 2023-04-28 | 石家庄科林电气设备有限公司 | Ring main unit capable of realizing in-place monitoring |
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| CN115602480B (en) * | 2022-12-12 | 2023-02-28 | 石家庄科林电气设备有限公司 | Three-position switch and three-position environment-friendly gas combined electrical appliance ring main unit |
| CN116031766A (en) * | 2023-03-29 | 2023-04-28 | 石家庄科林电气设备有限公司 | Ring main unit capable of realizing in-place monitoring |
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Effective date of registration: 20200703 Address after: Building 1, No. 473, Yuehua Road, Hecheng street, Gaoming District, Foshan City, Guangdong Province Applicant after: Anheng Intelligent Technology Co.,Ltd. Address before: 528000 Guangdong Province Nanhai District of Foshan City Shishan town kiln Red Sand Road West (Foshan high tech Zone Three Fumin huaibo science and Technology Industrial Co., Ltd.) by 1 Applicant before: GUANGDONG ANTHEN IRON TOWER & STEEL STRUCTURE Co.,Ltd. |