CN1892955A - Device for controlling the opening/closing operation of an electric switchgear - Google Patents
Device for controlling the opening/closing operation of an electric switchgear Download PDFInfo
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- CN1892955A CN1892955A CNA2006100942910A CN200610094291A CN1892955A CN 1892955 A CN1892955 A CN 1892955A CN A2006100942910 A CNA2006100942910 A CN A2006100942910A CN 200610094291 A CN200610094291 A CN 200610094291A CN 1892955 A CN1892955 A CN 1892955A
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- moving contact
- make
- operating mechanism
- switchgear
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- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
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- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H2033/6667—Details concerning lever type driving rod arrangements
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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
- H01H31/003—Earthing switches
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- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H33/6662—Operating arrangements using bistable electromagnetic actuators, e.g. linear polarised electromagnetic actuators
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention provides an opening/closing device of a switch gear capable of improving efficiency of opening/closing operations by reducing the number of rotary connection parts in a link mechanism. In this switch gear opening/closing device, a movable contact 5 can be switched to the first position Y1, the second position Y2 and the third position Y3 with respect to a fixed contact. The device comprises: an operation lever 80 interlocked with the movable contact 5; a shaft 31 to which the base part of the operation lever 80 is fixed; a first operation mechanism 40, coupled with the shaft 31, to switch-operate the movable contact 5 to the first position, the second position and the third position; and a second operation mechanism 70 to selectively switch between prevention of movement and movement of the movable contact 5 from the second position to the third position by the first operation mechanism 40.
Description
Technical field
The present invention relates to make moving contact to move to the switching device of three locational switchgears of make position, open position and off position.
Background technology
In controller switching equipment, be provided with the vacuum switch that folding and unfolding is used to disconnect load current or fault current; In the maintenance of loading and when maintenance, be used to guarantee the circuit breaker and the earthed switch of operator's safety, the checkout gear of system voltage/electric current, and the enclosed switch board (being also referred to as switchgear) of protection relay etc.
The insulation mode of this switchgear is diversified, except in the past air insulation dish, use the box-shaped GIS of SF6 gas, recently, insulation mode such as solid insulation, compressed air insulation, perfect vacuum insulation from the viewpoint of environmental protection has appearred, and just make to cut off the miniaturization of various assemblies such as switch, circuit breaker, earthed switch by various insulation modes in acceleration, proposed in an independent container disconnect, open circuit, the scheme of vacuum casting that function such as ground connection concentrates in together
Also have, in this vacuum casting, utilize switching device on three positions or four positions, to carry out conversion operations (for example, with reference to patent documentation 1: Japanese kokai publication hei 10-308145 communique) cutting off switch, circuit breaker and three kinds of functions of earthed switch.
This switching device, but generally connect moving-conductor and operation drive source with the linkage of a plurality of cranks, crank arm, connecting rod etc.Therefore, this linkage has a plurality of rotating junctions that are made of pin etc.
Though be coated with the lubricating oil of lubricating grease etc. on this rotating junction, after long-time, this lubricating oil solidifies, its result, and the resistance on the rotating junction increases, and needs very big operating physical force.The increase of this operating physical force becomes an obstacle that makes the switching device miniaturization.
Also have,, therefore,, have the bad defective of operating efficiency because the loss of operating physical force takes place in the deflection of these parts, loosening etc. because above-mentioned existing switching device uses the rotating junction that is made of a plurality of connecting rods, pin etc.
Summary of the invention
The present invention proposes with regard to being based on the above-mentioned fact, and its purpose is to provide a kind of quantity that reduces the rotating junction of linkage, and can improve the switching device of the switchgear of switching manipulation efficient.
In order to achieve the above object, the switching device of the switchgear of first invention can make moving contact relative fixed contact change in primary importance, the second place and the 3rd position, it is characterized in that possessing: the action bars that is connected with above-mentioned moving contact; Fixed the axle of the base portion of aforesaid operations bar; Be connected on the above-mentioned axle, make above-mentioned moving contact carry out first operating mechanism of conversion operations in primary importance, the second place, the 3rd position; And the above-mentioned moving contact of optionally changing above-mentioned first operating mechanism, make it move to the 3rd position or stop it to move to the second operation machine structure of the 3rd position from the second place from the second place.
In addition, the switching device of the switchgear of second invention can make moving contact relative fixed contact change in primary importance, the second place and the 3rd position, it is characterized in that possessing: first action bars that is connected with above-mentioned moving contact; Fixed the axle of the base portion of aforesaid operations bar; Be connected in second action bars on the above-mentioned axle; Be connected on above-mentioned second action bars, make above-mentioned moving contact carry out first operating mechanism of conversion operations in primary importance, the second place, the 3rd position; And the above-mentioned moving contact of optionally changing above-mentioned first operating mechanism, make it move to the 3rd position or stop it to move to the second operation machine structure of the 3rd position from the second place from the second place.
Also have, the switching device of the switchgear of the 3rd invention can make moving contact relative fixed contact change at make position, open position and off position, it is characterized in that possessing: first action bars that is connected with above-mentioned moving contact; Fixed the axle of the base portion of aforesaid operations bar; Be connected in second action bars on the above-mentioned axle; Be connected on above-mentioned second action bars, make above-mentioned moving contact carry out first operating mechanism of conversion operations at make position, open position and off position; And the above-mentioned moving contact of optionally changing above-mentioned first operating mechanism, make it move to off position or stop it to move to the second operation machine structure of off position from open position from open position.
Have, the switching device of the switchgear of the 4th invention can make moving contact relative fixed contact change at make position, open position and off position, it is characterized in that possessing: first action bars that is connected with above-mentioned moving contact again; Fixed the axle of the base portion of aforesaid operations bar; Be connected in second action bars on the above-mentioned axle; Has the electromagnet that is connected on above-mentioned second action bars, above-mentioned moving contact is driven to the make position direction and along with utilizing above-mentioned electromagnet that above-mentioned moving contact is moved and first operating mechanism of the spring of accumulation of energy to the make position direction; And optionally the elastic force of the above-mentioned spring of above-mentioned first operating mechanism of conversion using makes above-mentioned moving contact move to off position or stop it to move to the second operation machine structure of off position from open position from open position.
Have, the switching device of the switchgear of the 5th invention is in the 4th invention, it is characterized in that the structure of the electromagnet of above-mentioned first operating mechanism is that when above-mentioned moving contact was positioned at off position, its plunger was positioned at the outside of its fixed iron core again.
Also have, the switching device of the switchgear of the 6th invention is in the 5th invention, it is characterized in that above-mentioned second operation machine structure possesses: with the parts of triping of the front end one side butt of above-mentioned second action bars; And the electromagnet of the above-mentioned parts of triping of move operation.
Have, the switching device of the switchgear of the 7th invention is in the stream invention, it is characterized in that the above-mentioned parts of triping are for to be arranged at by the disk on the bar of above-mentioned operation electriomagnet rotationally again.
Also have, the switching device of the switchgear of the 8th invention is characterized in that the above-mentioned parts of triping are the cam that is arranged at by on the bar of above-mentioned operation electriomagnet.
Also have, the 9th invention the switching device of switchgear, be in any of first to the 8th invention, it is characterized in that possessing: earthed switch; Operate the 3rd operating mechanism of its moving contact; And with the interlocking device of above-mentioned second operation machine structure interlock, when being in above-mentioned open position Y2, the moving contact of earthed switch can not close a floodgate; When earthed switch closed a floodgate, above-mentioned second operation machine structure can not be worked.
According to the present invention, owing to connect and compose moving contact and operating mechanism thereof with a bar at least, therefore, can cut down bar and rotating junction thereof, and improve the transmission efficiency of the actuating force of operating mechanism.Also have, therefore the mechanical interlocking owing to can easily realizing cutting off between switch and the circuit breaker, has improved the reliability of its operation.
Description of drawings
Fig. 1 is the end view of an execution mode of representing the switching device of switchgear of the present invention with partial cutaway.
Fig. 2 is the vertical view of an execution mode of the switching device of switchgear of the present invention shown in Figure 1.
Fig. 3 is the cutaway view of internal structure of electromagnet of first operating mechanism that is used to illustrate an execution mode of the switching device that constitutes switchgear of the present invention.
Fig. 4 is the cutaway view of internal structure of electromagnet of second operation machine structure that is used to illustrate an execution mode of the switching device that constitutes switchgear of the present invention.
Fig. 5 is the sectional view of the 3rd operating mechanism of an execution mode of representing to constitute the switching device of switchgear of the present invention with partial cutaway.
Fig. 6 is the sectional view of off-state of an execution mode of the switching device of expression switchgear of the present invention.
Fig. 7 is the sectional view of closing operation of an execution mode that is used to illustrate the switching device of switchgear of the present invention.
Fig. 8 is the sectional view of closure state of an execution mode of the switching device of expression switchgear of the present invention.
Fig. 9 is the action specification figure that keeps that is used to illustrate the closure state of electromagnet shown in Figure 3.
Figure 10 is the operating instruction figure of the action of triping that is used to illustrate the magnetic lock of electromagnet shown in Figure 3.
Figure 11 is the sectional view of open-circuit operation of an execution mode that is used to illustrate the switching device of switchgear of the present invention.
Figure 12 is the sectional view of off state of an execution mode of the switching device of expression switchgear of the present invention.
Figure 13 is the end view of other execution mode of the switching device of expression switchgear of the present invention.
Figure 14 is the sectional view of action of the 3rd operating mechanism of an execution mode of the explanation switching device that constitutes switchgear of the present invention.
Among the figure:
5-vacuum casting, 5-moving contact, 13-crimp spring, 30-three position operation mechanisms, 31-the first, 40-the first operating mechanism, electromagnet, the 42-tripping operation spring of 41-the first operating mechanism, 70-second operation machine structure, the electromagnet of 71-second operation machine structure, 72-roller, 81-banking pin, 100-earthed switch, 102-earthed switch operating mechanism, 108-interlocking device, Y1-make position, Y2-open position, Y3-off position
Embodiment
Below, an execution mode of the switching device of accompanying drawings switchgear of the present invention.
Fig. 1 is the end view of an execution mode of the switching device of expression switchgear of the present invention, and Fig. 2 is the vertical view of Fig. 1.Situation when Fig. 1 represents that switchgear is in off-state.
Vacuum casting 1 is connected with power supply or load (not shown) by fixation side feeder line 2A, movable side feeder line 2B.The moving contact 5 relative with fixed contact 3 in the vacuum casting stops at following three positions: the make position Y1 that is used to switch on, the off position Y3 that is used to cut off the open position Y2 of electric current and is used for guaranteeing at surge voltages such as thunders and lightnings upkeep operation personnel's safety.
Vacuum tank 4 by pottery tube 6, end plate 7,8 and bellows 9 constitute up and down, can make moving contact 5 actions when keeping vacuum tight by bellows 9.But between moving-conductor 10 and movable side feeder line 2B, connect, and the energising performance when guaranteeing to move with fexible conductor 11.
When connecting vacuum casting 1 and three position operation mechanisms 30,, main circuit and portion of mechanism inserted insulating bar 12 for being cut off on electricity.In this embodiment, make and to be used for the contact is applied the structure of crimp spring 13 folding and unfoldings in insulating bar 12 of contact load.Insulating bar 12 is connected in the contact that is fixed on first 31 by pin 32 and uses on the bar 33, and makes moving contact 5 actions by first 31 rotating operation.
Have, as shown in Figure 2, in this embodiment, though be that example is illustrated with threephase switch equipment, certainly, the present invention is also applicable to the single-phase switch device again.
Illustrate in greater detail the structure of three above-mentioned position operation mechanisms 30 below in conjunction with Fig. 1 and Fig. 2.
Three position operation mechanisms 30, by first 31, the second operation machine structure 70 that first operating mechanism 40 and being used to that is used to carry out the conversion operations of make position Y1 and open position Y2 carries out the conversion operations of open position Y2 and off position Y3 constitutes.First operating mechanism 40 possesses electromagnet 41 and tripping operation spring 42.On the connecting portion of electromagnet 41 and action bars 44, be provided with the circular motion that is used to allow the action bars 44 that causes by first 31 rotation and the straight-line link 43 of electromagnet 41.
On the other hand, second operation machine structure 70 constitutes by roller operating mechanism 73 and as the electromagnet 71 of its drive source.Bar 75 is provided with on an end that with axle 76 is the bar 75 that supports rotationally of center by pin 78 roller 72 free to rotate.This roller 72 be arranged at banking pin 81 butts that open circuit with front end one side of bar 80.The cardinal extremity that opens circuit with bar 80 is fixed on first 31.
The other end of above-mentioned bar 75 is connected on the electromagnet 71.For corresponding with the circular motion of the rectilinear motion of electromagnet 71 and bar 75, electromagnet 71 is connected by link 74 with bar 75.The bearing 77 of axle 76 is fixed in the top of electromagnet 71.
Secondly, the structure of above-mentioned electromagnet 41 and electromagnet 71 is described in conjunction with Fig. 3 and Fig. 4.
The structure of electromagnet 41 at first, is described in conjunction with Fig. 3.Movable core is made of plunger 50 and movable dull and stereotyped 51, and its cross section is the T font.The bar 52 of stainless steel connects this plunger 50 and movable flat board 51, and is fixed on plunger 50 and movable dull and stereotyped 51 with nut 53.
Fixed iron core is made of top iron core 54, return yoke steel pipe 55, central yoke 56, permanent magnet seat 57.The fixed iron core internal configurations has coil 65.Plunger 50 connects the center of coil 65.On permanent magnet seat 57, with movable dull and stereotyped 51 in the face of circular permanent magnet 58 is installed.Around permanent magnet 58, dispose the steel pipe 59 that is used to reduce to the leakage flux of electromagnet outside.Top iron core 54, return yoke steel pipe 55, permanent magnet seat 57, steel pipe 59 and bottom steel plate 60 usefulness screws 61 and nut 62 clampings fit together, and constitute electromagnet 41.
Also have, tripping operation spring 42 is by the parts 63 and bottom steel plate 60 clampings of the end (lower end of Fig. 3) of the bar 52 that is arranged at stainless steel.Parts 63 are fixed on the bar 52 of stainless steel by nut 64.
Secondly, the structure of above-mentioned electromagnet 71 is described in conjunction with Fig. 4.Fixed iron core is made of 85,86,87 and 2 sections steel pipes 88,89 of 3 block plates.Portion disposes two coils 90,91 within it.By each coil is carried out excitation, plunger 92 is moved along the vertical direction.Plunger 92 is fixed on the operating axis 93.The upper end of this operating axis 93 as shown in Figure 1, is connected in the other end of bar 75.Also have, between steel plate 85 and plunger 92, dispose back-moving spring 94.
On the fixation side feeder line 2A of each vacuum casting 1 of Figure 1 and Figure 2, as shown in Figure 5, be provided with earthed switch 100.The moving contact 101 of the fixed contact of this earthed switch 100 is movably operated by earthed switch operating mechanism 102 relatively.
This earthed switch operating mechanism 102 is by constituting with lower member: with first 31 second 103 of being provided with abreast, be arranged at the contact bar 104 on this second 103, be arranged at the earthy bar 105 on second 103, connecting terminal reaches the electromagnet 107 that is connected with earthy bar 105 with the connecting rod 106 of bar 104 and moving contact 101.
The electromagnet 107 of this earthed switch operating means 102 is connected with interlocking device 108 by the operating axis 93 of the electromagnet 71 of above-mentioned second operation machine structure 70.This interlocking device 108 has following dependency relation: when the moving contact in the vacuum shell 5 is in when guaranteeing the upkeep operation personnel to the 3rd position of the off position Y3 of the safety of the surge voltage of thunder and lightning etc., it can close a floodgate moving contact 101 on the fixed contact of earthed switch 100 by electromagnet 107; In addition, when the moving contact in the vacuum shell 5 was in the second place for the open position Y2 that cuts off electric current, it can not close a floodgate moving contact 101 on the fixed contact of earthed switch 100 by electromagnet 107; Have again, when its moving contact 101 is connected with the fixed contact of earthed switch 100, then can not make electromagnet 71 work of second operation machine structure 70.
Promptly, this interlocking device 108 is by constituting with lower member: be arranged on the electromagnet 107 the lower end of operating axis 109 on pin 110, in the downside of electromagnet 107 and second 103 interlocking device that is provided with abreast with axle 111, be arranged at this on 111 and be connected in the second operation machine structure electromagnet 71 operating axis 93 the lower end bar 112 and be arranged on the axle 111 and 2 bars 113,114 that cooperate with above-mentioned pin 110.
Below, the action of an execution mode of the switching device of above-mentioned switchgear of the present invention is described in conjunction with Fig. 6 to Figure 11.
Fig. 6 represents is that moving contact 5 in the vacuum casting 1 is set in the state when cutting off the open position Y2 of electric current, in this Fig. 6, first operating mechanism 40 is by means of tripping operation spring 42 thereon being set and applying clockwise rotatory force to being arranged at opening circuit on first 31 with bar 80 often by link 43.
Thus, being arranged at and opening circuit, and can suppress the further rotation along clockwise direction that causes by tripping operation spring 42 with banking pin on the bar 80 81 and roller 72 butts.That is, stop from for the open position Y2 that cuts off electric current to for guaranteeing that the upkeep operation personnel move the off position Y3 of the safety of the surge voltage that caused by thunder and lightning etc.
Here, the interference point P of butt between banking pin 81 and the roller 72 sets the straight line with respect to the axle 76 of rotation axis 78 that connects roller 72 and bar 75 for, with electromagnet 71 opposite sides.Therefore, bar 75 relative its axles 76 bear counterclockwise rotatory force.But, owing to be connected in the mobile restriction that is subjected to steel plate 87 of the plunger 92 of the electromagnet 71 on the bar 75, thus, the position of interference point P, be that open position Y2 is fixed.Also have, open position Y2 makes the number of the thin plate 95 of bearing fixing portion that can be by being arranged at axle 76 and regulates.
Below, utilize of the operation (closing operation) of first operating mechanism 40 in conjunction with Fig. 7 explanation from open position Y2 to make position Y1.
As shown in Figure 7, when the coil 65 of electromagnet 41 was switched on, then to this plunger 50 effect attraction F1, plunger 50, movable flat board 51 and the stainless steel 52 just last direction in Fig. 7 moved.This actuating force is delivered on first 31 by link 43, and first 31 counter-clockwise direction rotated.Thus, rotate with bar 33 counter-clockwise direction the contact, and moving contact 5 is moved to make position Y1 direction.Under this state, tripping operation spring 42 and crimp spring 13 all are in energy accumulating state, in order to disconnecting action.
Have, as shown in Figure 8, by closing operation, the butt state between banking pin 81 and the roller 72 is disengaged again, but because its plunger 92 is subjected to the downward active force of back-moving spring 94 effects of electromagnet 71, thereby the invariant position of roller 72.
As shown in Figure 8, under the state that remains in make position Y1, first operating mechanism 40 needs the confining force of the elastic force of antagonism tripping operation spring 42 and crimp spring 13.In order to obtain this confining force, present embodiment is used the attraction of the permanent magnet 58 of first operating mechanism 40, promptly so-called magnetic lock mode.As shown in Figure 9, the magnetic flux Φ that produces by the permanent magnet 58 of electromagnet 41, on plunger 50 and movable dull and stereotyped 51, act on attraction Fp, Fp1 respectively, but make it more than elastic force that reaches above-mentioned spring, make it to keep the state of make position Y1 by setting its summation Fp+Fp1.
When switchgear is in closure state, can not carry out open-circuit operation, for this reason, the interlocking device that electricity is set usually can not move second operation machine structure 70.Recently, the requirement of enhanced safety improves day by day, and common way is, considers the fault of the interlocking device of electricity, and the interlocking device of machinery is set simultaneously.As shown in Figure 8, the measure that three position operation mechanisms 30 of the present invention are taked is that under closure state, the interference that is taken place by banking pin 81 and roller 72 butts is disengaged, even just in case 70 work of second operating mechanism, can not bring influence to first 31 and moving contact 5 yet.That is, realization automatically is as " under the situation that moving contact is in the close position, can not carry out open-circuit operation " of one of mechanical interlocking between cut-out switch, the circuit breaker.
Below, illustrate and utilize of the operation (opening operation) of first operating mechanism 40 from make position Y1 to open position Y2.
The elastic force of opening operation utilization tripping operation spring 42 and crimp spring 13.The operation of triping of magnetic lock is described in conjunction with Figure 10.Reciprocal excitation when being undertaken with closing operation by the coil 65 to electromagnet 41 is eliminated the magnetic flux Φ of permanent magnet 58, and reduces the attraction that acts between plunger 50 and the central yoke 56.Though the attraction Fp1 that acts on movable dull and stereotyped 51 does not rely on the excitation of coil 45 and roughly keeps certain, if but the summation Fp+Fp1 of attraction is lower than the elastic force of spring 42, then move plunger 50 belows of beginning in figure, returns to off-state shown in Figure 6.
Then, utilize second operation machine structure 70 from the operation (open-circuit operation) of open position Y2 in conjunction with Figure 11 explanation to off position Y3.
In off-state shown in Figure 11, when the coil 90 to electromagnet 71 carries out excitation, the attraction F2 of effect direction among the figure in plunger 92 then.By this actuating force, make bar 75 and connected roller 72, be that the center clockwise direction rotates with axle 76.Thus, roller 72 moves the position of representing with double dot dash line.State after it moves, promptly off state is shown in Figure 12.
As mentioned above, the tripping operation spring 42 by first operating mechanism 40 acts on clockwise rotatory force to first 31 often.Therefore, banking pin 81 and roller 72 are also always kept the butt state in the open-circuit operation process, because roller 72 is mobile, its abutment is that the following direction of interference point P in figure departs from.
Its result, first 31 clockwise direction rotates, and moving contact 5 moves to off position Y3 by the contact with bar 33.Off position Y3 is by the determining positions of the plunger 92 and steel plate 85 conflicts of electromagnet 71.That is to say, if on the both direction of second operation machine structure 70, use exercisable electromagnet, because in the actuating range of same electromagnet, the interval of open position Y2 and off position Y3 can automatically be determined, thereby not need adjusting mechanism.And, why adopt the butt structure of banking pin 81 and roller 72, be for the friction when reducing it and move and successfully carry out open-circuit operation.
In off state shown in Figure 12, the plunger 50 of the electromagnet 41 of first operating mechanism 40 is in the below of permanent magnet seat 57, promptly is positioned at the outside of fixed iron core.Thus, even just in case under off state, coil 65 is carried out excitation, the also magnetic flux by plunger 50 not almost, thereby attraction does not take place.That is to say, realized cutting off the mechanical interlocking between switch and the circuit breaker, promptly " be at moving contact under the situation of off position, can not carry out closing operation ".
Below, utilize the operation of second operation machine structure 70 in conjunction with Figure 12 explanation from off position Y3 to open position Y2.
As shown in figure 12, when under off state, the coil 91 of the electromagnet 71 of second operation machine structure 70 being carried out excitation, then to the downward attraction F3 of plunger 92 effects.By this actuating force F3, making bar 75 and roller 72 is that the center is counterclockwise rotated, moved with axle 76.Thus, the banking pin 81 of butt pushes upward because roller 72 is incited somebody to action with it, and therefore, moving contact 5 just moves to open position Y2.
The dependency relation of the off position Y3 and the earthed switch operating mechanism 102 of second operation machine structure 70 then, is described in conjunction with Fig. 5.When the moving contact in the vacuum shell 5 is in the second place for the open position Y2 that cuts off electric current, because the bar 113 of interlocking device 108 cooperates with the pin 110 of the lower end of the operating axis 109 that is arranged on electromagnet 107, thereby, make the moving contact 101 of earthed switch 100 can not utilize electromagnet 107 to close a floodgate on its fixed contact.
In addition, when on its fixed contact that the moving contact 101 of this earthed switch 100 is closed a floodgate, promptly under ground state, because the bar 114 of interlocking device 108 is interfered with the pin of the lower end of the operating axis 109 that is arranged at electromagnet 107 110, makes the electromagnet 71 of second operation machine structure 70 not work.On the other hand, as shown in figure 14, when the moving contact 5 of vacuum shell 1 is in the close position Y1 or open position Y2,, make earthed switch operating mechanism 102 not work because pin 110 and bar 113 interfere with each other.That is, utilize interlocking device 108, do not allow the closing operation of the earthed switch 100 under closure state and off-state, more do not allow the open-circuit operation under the ground state.
Have again, in the above-described embodiment, on the roller operating mechanism 73 of second operation machine structure 70, used roller free to rotate 72, but also this roller 72 can be made the cam of partial arc shape.
In addition, though the electromagnet 41 of first operating mechanism 40 and the electromagnet 71 of second operation machine structure 70 are configured in the downside that opens circuit with bar 80, as shown in figure 13, also these electromagnet 41,71 can be configured in the upside that opens circuit with bar 80.At this moment, action bars is connected in the mid portion that opens circuit with bar 80.
Have again, also the electromagnet 71 of second operation machine structure 70 can be disposed on the direction with the direction of action quadrature of the electromagnet 41 of first operating mechanism 40.Have again,, also can adopt other modes of operation such as electric spring mode though first operating mechanism 40 adopts electromagnetic operation mode.
According to above-mentioned embodiments of the present invention, be arranged on structure on first operating mechanism 40 although make the second operation machine structure 70 that open-circuit operation is used, but the situation of the operating characteristics of its first operating mechanism 40 and two position operation mechanisms does not still change, and has solved the problem of the low this existing apparatus existence of transmission efficiency of operating physical force.
In addition, owing to consider under closure state, make the measure of banking pin 81 and roller 72 mutually noninterferes, therefore, even the Electricity Federation lock breaks down, make second operation machine structure 70 just in case under the situation of action, also only change the position of roller 72, and can not bring any influence moving contact 5.That is to say, can automatically realize cutting off an aspect of the mechanical interlocking between switch, the circuit breaker and " under the situation that moving contact is in the close position, can not carry out open-circuit operation ".
Have again, under off state,, therefore,, can not carry out closing operation even, also do not act on attraction just in case electromagnet 41 is carried out excitation because the plunger 50 of the electromagnet 41 of first operating mechanism 40 is positioned at the fixed iron core outside.That is, another aspect that also can realize mechanical interlocking " is at moving contact under the situation of off position, can not carries out closing operation ".Promptly, according to three position operation mechanisms 30 of the present invention, owing to improved the efficient that requires to realize first operating mechanism of the connection and the task of cut-out with big electric current, and do not need to cut off the linkage component that the mechanical interlocking between switch, the circuit breaker is used, therefore, realize miniaturization, and further improved reliability.
Claims (9)
1. the switching device of a switchgear can make moving contact relative fixed contact change in primary importance, the second place and the 3rd position, it is characterized in that possessing:
The action bars that is connected with above-mentioned moving contact;
Fixed the axle of the base portion of aforesaid operations bar;
Be connected on the above-mentioned axle, make above-mentioned moving contact carry out first operating mechanism of conversion operations in primary importance, the second place, the 3rd position; And
Optionally change the above-mentioned moving contact of above-mentioned first operating mechanism, make it move to the 3rd position or stop it to move to the second operation machine structure of the 3rd position from the second place from the second place.
2. the switching device of a switchgear can make moving contact relative fixed contact change in primary importance, the second place and the 3rd position, it is characterized in that possessing:
First action bars that is connected with above-mentioned moving contact;
Fixed the axle of the base portion of aforesaid operations bar;
Be connected in second action bars on the above-mentioned axle;
Be connected on above-mentioned second action bars, make above-mentioned moving contact carry out first operating mechanism of conversion operations in primary importance, the second place, the 3rd position; And
Optionally change the above-mentioned moving contact of above-mentioned first operating mechanism, make it move to the 3rd position or stop it to move to the second operation machine structure of the 3rd position from the second place from the second place.
3. the switching device of a switchgear can make moving contact relative fixed contact change at make position, open position and off position, it is characterized in that possessing:
First action bars that is connected with above-mentioned moving contact;
Fixed the axle of the base portion of aforesaid operations bar;
Be connected in second action bars on the above-mentioned axle;
Be connected on above-mentioned second action bars, make above-mentioned moving contact carry out first operating mechanism of conversion operations at make position, open position and off position; And
Optionally change the above-mentioned moving contact of above-mentioned first operating mechanism, make it move to off position or stop it to move to the second operation machine structure of off position from open position from open position.
4. the switching device of a switchgear can make moving contact relative fixed contact change at make position, open position and off position, it is characterized in that possessing:
First action bars that is connected with above-mentioned moving contact;
Fixed the axle of the base portion of aforesaid operations bar;
Be connected in second action bars on the above-mentioned axle;
Has the electromagnet that is connected on above-mentioned second action bars, above-mentioned moving contact is driven to the make position direction and along with utilizing above-mentioned electromagnet that above-mentioned moving contact is moved and first operating mechanism of the spring of accumulation of energy to the make position direction; And
Optionally the elastic force of the above-mentioned spring of above-mentioned first operating mechanism of conversion using makes above-mentioned moving contact move to off position or stop it to move to the second operation machine structure of off position from open position from open position.
5. according to the switching device of the switchgear of claim 4 record, it is characterized in that,
The structure of the electromagnet of above-mentioned first operating mechanism is that when above-mentioned moving contact was positioned at off position, its plunger was positioned at the outside of its fixed iron core.
6. according to the switching device of the switchgear of claim 5 record, it is characterized in that above-mentioned second operation machine structure possesses:
The parts of triping with the front end one side butt of above-mentioned second action bars; And
The electromagnet of the above-mentioned parts of triping of move operation.
7. according to the switching device of the switchgear of claim 6 record, it is characterized in that,
The above-mentioned parts of triping are for to be arranged at by the disk on the bar of above-mentioned operation electriomagnet rotationally.
8. according to the switching device of the switchgear of claim 6 record, it is characterized in that,
The above-mentioned parts of triping are the cam that is arranged at by on the bar of above-mentioned operation electriomagnet.
9. according to the switching device of the switchgear of any record in the claim 1 to 8, it is characterized in that possessing:
Earthed switch;
Operate the 3rd operating mechanism of its moving contact; And
With the interlocking device of above-mentioned second operation machine structure interlock, when being in above-mentioned open position Y2, the moving contact of earthed switch can not close a floodgate; When earthed switch closed a floodgate, above-mentioned second operation machine structure can not be worked.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005189829A JP4174495B2 (en) | 2005-06-29 | 2005-06-29 | Switchgear switchgear |
| JP2005189829 | 2005-06-29 | ||
| JP2005-189829 | 2005-06-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1892955A true CN1892955A (en) | 2007-01-10 |
| CN1892955B CN1892955B (en) | 2015-04-15 |
Family
ID=36845412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610094291.0A Expired - Fee Related CN1892955B (en) | 2005-06-29 | 2006-06-28 | Opening/closing device of an electric switchgear |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1739701B1 (en) |
| JP (1) | JP4174495B2 (en) |
| CN (1) | CN1892955B (en) |
| HK (1) | HK1098247A1 (en) |
| SG (1) | SG128647A1 (en) |
| TW (1) | TW200719373A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102420081A (en) * | 2010-08-12 | 2012-04-18 | 株式会社日立制作所 | Air circuit breaker |
| CN103050329A (en) * | 2013-01-05 | 2013-04-17 | 许昌永新电气股份有限公司 | Rotary grounding switch |
| CN103180927A (en) * | 2010-12-20 | 2013-06-26 | 三菱电机株式会社 | Power switch device |
| CN105849844A (en) * | 2013-12-26 | 2016-08-10 | 三菱电机株式会社 | Bypass switch |
| CN109490934A (en) * | 2018-12-19 | 2019-03-19 | 上海平高天灵开关有限公司 | A kind of vacuum interrupter X-ray detection platform |
| CN110268496A (en) * | 2017-03-13 | 2019-09-20 | 欧姆龙株式会社 | Switch |
| CN118117479A (en) * | 2024-03-15 | 2024-05-31 | 昆山盛英电气有限公司 | Mechanical-fit interlocking handcart structure and power distribution switch cabinet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4951597B2 (en) * | 2008-08-11 | 2012-06-13 | 株式会社日立製作所 | Breaker |
| JP5542545B2 (en) | 2009-11-24 | 2014-07-09 | パナソニック株式会社 | Disconnector |
| DE112010005126B4 (en) | 2010-01-13 | 2018-07-05 | Mitsubishi Electric Corporation | Electromagnetically actuated switching device |
| ES1243729Y1 (en) | 2020-02-19 | 2021-04-28 | Quijada Pablo Paunero | SAFETY DEVICE AND TRIPOLAR BASE |
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| DE3412399A1 (en) * | 1984-04-03 | 1985-10-10 | Sachsenwerk, Licht- und Kraft-AG, 8000 München | Three-position switch |
| US4642430A (en) * | 1985-07-18 | 1987-02-10 | Westinghouse Electric Corp. | Molded case circuit breaker with an improved contoured cradle |
| JPH02100229A (en) * | 1988-10-06 | 1990-04-12 | Mitsubishi Electric Corp | Remotely operated type circuit breaker |
| EP0801407B1 (en) * | 1996-04-11 | 2004-07-14 | ABB PATENT GmbH | Single or multiphase vacuum switch |
| JP3738490B2 (en) * | 1996-08-01 | 2006-01-25 | 株式会社明電舎 | Switchgear |
| US5772009A (en) * | 1996-09-13 | 1998-06-30 | S&C Electric Company | Operating mechanism for switches and fault interrupters |
| JP3407013B2 (en) * | 1997-05-01 | 2003-05-19 | 三菱電機株式会社 | Switchgear |
| JP3664899B2 (en) * | 1998-11-27 | 2005-06-29 | 株式会社東芝 | Vacuum switchgear |
| JP3589061B2 (en) * | 1999-01-25 | 2004-11-17 | 株式会社日立製作所 | Vacuum switchgear and method for opening and closing vacuum switchgear |
| JP2000285768A (en) * | 1999-03-30 | 2000-10-13 | Toshiba Corp | Operating mechanism for three-position switching device |
| FR2826500B1 (en) * | 2001-06-20 | 2003-08-15 | Alstom | DISCONNECTOR CONTROL HAVING A LIMIT SWITCH FOR MANUAL SWITCHING OF THE DISCONNECTOR |
| JP3906705B2 (en) * | 2002-02-14 | 2007-04-18 | 富士電機システムズ株式会社 | Controller for equipment with 3 positions |
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2005
- 2005-06-29 JP JP2005189829A patent/JP4174495B2/en active Active
-
2006
- 2006-06-01 TW TW095119401A patent/TW200719373A/en unknown
- 2006-06-22 EP EP20060012894 patent/EP1739701B1/en not_active Not-in-force
- 2006-06-27 SG SG200604377A patent/SG128647A1/en unknown
- 2006-06-28 CN CN200610094291.0A patent/CN1892955B/en not_active Expired - Fee Related
-
2007
- 2007-04-24 HK HK07104352.7A patent/HK1098247A1/en not_active IP Right Cessation
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420081A (en) * | 2010-08-12 | 2012-04-18 | 株式会社日立制作所 | Air circuit breaker |
| CN103180927A (en) * | 2010-12-20 | 2013-06-26 | 三菱电机株式会社 | Power switch device |
| CN103180927B (en) * | 2010-12-20 | 2016-03-30 | 三菱电机株式会社 | Power switch device |
| US9324521B2 (en) | 2010-12-20 | 2016-04-26 | Mitsubishi Electric Corporation | Power switchgear |
| CN103050329A (en) * | 2013-01-05 | 2013-04-17 | 许昌永新电气股份有限公司 | Rotary grounding switch |
| CN105849844B (en) * | 2013-12-26 | 2018-09-04 | 三菱电机株式会社 | Bypass cock |
| CN105849844A (en) * | 2013-12-26 | 2016-08-10 | 三菱电机株式会社 | Bypass switch |
| CN110268496A (en) * | 2017-03-13 | 2019-09-20 | 欧姆龙株式会社 | Switch |
| CN110268496B (en) * | 2017-03-13 | 2021-03-30 | 欧姆龙株式会社 | Switch with a switch body |
| CN109490934A (en) * | 2018-12-19 | 2019-03-19 | 上海平高天灵开关有限公司 | A kind of vacuum interrupter X-ray detection platform |
| CN109490934B (en) * | 2018-12-19 | 2022-11-25 | 上海平高天灵开关有限公司 | X-ray detection platform for vacuum arc-extinguishing chamber |
| CN118117479A (en) * | 2024-03-15 | 2024-05-31 | 昆山盛英电气有限公司 | Mechanical-fit interlocking handcart structure and power distribution switch cabinet |
| CN118117479B (en) * | 2024-03-15 | 2024-07-30 | 昆山盛英电气有限公司 | Mechanical-fit interlocking handcart structure and power distribution switch cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1739701A2 (en) | 2007-01-03 |
| HK1098247A1 (en) | 2007-07-13 |
| CN1892955B (en) | 2015-04-15 |
| TW200719373A (en) | 2007-05-16 |
| TWI329881B (en) | 2010-09-01 |
| EP1739701A3 (en) | 2009-03-04 |
| EP1739701B1 (en) | 2011-08-10 |
| JP4174495B2 (en) | 2008-10-29 |
| JP2007012362A (en) | 2007-01-18 |
| SG128647A1 (en) | 2007-01-30 |
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Effective date of registration: 20170309 Address after: Tokyo, Japan, Japan Patentee after: Hitachi Sanki System Co., Ltd. Address before: Tokyo, Japan, Japan Patentee before: Hitachi Ltd. |
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