CN101425422B - Electric power opening and closing device and gas insulation circuit-breaker - Google Patents
Electric power opening and closing device and gas insulation circuit-breaker Download PDFInfo
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- CN101425422B CN101425422B CN2008102151369A CN200810215136A CN101425422B CN 101425422 B CN101425422 B CN 101425422B CN 2008102151369 A CN2008102151369 A CN 2008102151369A CN 200810215136 A CN200810215136 A CN 200810215136A CN 101425422 B CN101425422 B CN 101425422B
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Abstract
This invention refers to an electric power switching device (100) having an operation part (12) and a power transmission mechanism (4, 5, 8, 9, 11). The operation part (12) generates driving force to drive movable contact (6) to a direction of putting or cutting. The movable contact (6) and a fixing contact (7) are configured oppositely in a way capable of contacting or separating. The power transmission mechanism transmits driving force to the movable contact (6) of the operation part. A secondary driving force generating mechanism is mounted at rotation lever (4) of the power transmission mechanism and is composed of a twisted bar (1). The twisted bar accumulates force when the movable contact is put or cut and releases force when moving in the other state. Therefore, the driving ability of the driving source is not increased, and the length of the power transmission component has no relationship with the high speed motion of the electric power switching device, such as the shutter or the breaker and so on.
Description
Technical field
The present invention relates to a kind of electric power opening and closing device, for example be applicable to shutter, break and the gas insulation breaker etc. of high voltage specifications such as electric substation, switching station.
Background technology
The function of being located at the circuit breaker of electric substation or switching station is to guarantee "on" position usually, turn-off current when causing abnormal current to take place because of thundering etc. because of electric power system.Generally, electric power opening and closing device and fixed contact can contact relatively and dispose moving contact with leaving, through operating portion moving contact are driven on the direction of leaving immediately, carry out the connection of circuit breaker and are pulled away from.
The operating portion of such electric power opening and closing device constitutes as drive source with electromagnet, elastomeric element, oil pressure source etc.As the example of elastomeric element, such as patent documentation 1 the record, connect purposes and use disc spring under the purposes respectively with being pulled away from.These disc springs are accumulated power through other power sources before connection or before being pulled away from, response goes code or is pulled away from instruction and discharges the elastic force accumulate, thereby with the high-speed driving moving contact.
At this,, the actuating force of disc spring is increased, but existence is excessive as the shared volume of the spring of elastomeric element, the problem that operating portion maximizes for connection that makes circuit breaker or the on-off action high speed that is pulled away from.In addition, for example about 1/3 of the quality of disc spring self form inertia load, it all acts on the action axis of spring, and institute is so that the energy increase of spring own activity becomes the obstacle to high speed.
In order to solve such problem, use torsion bar as elastomeric element in the patent documentation 2.Like this; One end of two torsion bars is fixed on the symmetric position of rotating shaft of swingle, the other end of a fixing side's torsion bar is connected the other end of the opposing party's torsion bar and connection or the rotating shaft that is pulled away from bar; Thereby make the elasticity of two torsion bars in upright arrangement, obtain big actuating force.Promptly; Make connection or be pulled away from the bar rotation through other power sources before connection or before being pulled away from; On two torsion bars, accumulate amount of torsional energy in advance, need to connect order or be pulled away from order and draw back the locking bar (latch) of connecting or being pulled away from bar, make the actuating force release force of on two torsion bars, accumulating.
Put down in writing like patent documentation 2,, can be reduced to the energy that obtains rotating torques where necessary and run off, so because the little off action high speed that can make circuit breaker of inertia load according to a plurality of torsion bars elastomeric element that connects in upright arrangement.
Patent documentation 1: the spy opens the 2001-266719 communique
Patent documentation 2: the spy opens clear 63-304542 communique
But, in the patent documentation 2,, do not considered fully about the shutter that is used for high pressure or electric substation more than the ultra high voltage or switching station or the situation of circuit breaker.That is, under the shutter that high pressure or ultra high voltage are above or the situation of circuit breaker, the maximization that becomes of electric power opening and closing device, the length of the power transfer path from the drive source to the moving contact is elongated.Particularly, under the situation of the gas insulation breaker of insulator type etc., the length of power transfer path can reach several 10cm～number m.Like this, the length of power transfer path is elongated, receives inertia etc. to influence the transmission that produces actuating force and delays, and boundary is also arranged on the high speed.
Summary of the invention
The object of the invention is to provide a kind of does not increase the drive source drives energy, and the length that has nothing to do with power transmission member how, and can make electric power opening and closing device high speed motion such as shutter or circuit breaker.
Electric power opening and closing device of the present invention, one of which mask have the fixed contact of making relatively also can contact the switching portion of configuration with moving contact with leaving; Generation is to the operating portion of said moving contact to the actuating force that is switched on or switched off the direction driving; With the Poewr transmission mechanism that the actuating force of this operating portion is transmitted to said moving contact; It is characterized in that; Has the secondary actuating force generating mechanism that constitutes by elastomeric element near the said switching portion in the power transfer path of said Poewr transmission mechanism; This elastomeric element is accumulated power, release force when the opposing party's state moves under a side's who is switched on or switched off of said switching portion state.
Like this; Drive source complicated variant ground with operating portion; The secondary actuating force generating mechanism of under a side's who is switched on or switched off state, accumulating power be installed in switching portion in the power transfer path of the actuating force that is switched on or switched off near; Thereby when being switched on or switched off of moving contact, except the drive source drives power as operating portion, the secondary actuating force of secondary actuating force generating mechanism is as the actuating force effect of moving contact.Therefore, can make the high speed that is switched on or switched off of switching portion.
In the past, as the gas-break switch of insulator type; Under the elongated situation of power transfer path; Do not pass to disconnection (switching) portion immediately from the actuating force of the drive source transmission of being located near the operating portion the earth via Poewr transmission mechanism portion; And after the strain that produces the Poewr transmission mechanism parts, actuating force is delivered to break, makes the break action.Break is owing to charged, so Poewr transmission mechanism portion uses insulating material such as Fibreglass Reinforced Plastics usually.Such insulating material is because vertical coefficient of elasticity is littler than ferrous metal material; So stretch easily when receiving tension; It is big that variation when actuating force passes to Poewr transmission mechanism portion becomes, and the amount so that variation increases produces unnecessary time lag in driving break.
According to preferred implementation of the present invention; Be configured near the break as secondary actuating force with the part of drive source; Thereby pass to Poewr transmission mechanism portion from the actuating force of the drive source transmission of operating portion; Generation time under the strain of Poewr transmission mechanism parts delay during, also can make break action through secondary actuating force, can compensate the loss of time that Poewr transmission mechanism portion produces.
Particularly, near the portion of switching described in the power transfer path, preferably with on the electro-mechanical part of the earth insulation secondary actuating force generating mechanism is installed, and can shortens power transfer path from secondary actuating force generating mechanism to moving contact.As a result, can shorten Poewr transmission mechanism, suppress inertia load, and can reduce to transmit and delay from secondary actuating force generating mechanism to moving contact.Therefore, can reduce the actuating force of secondary actuating force generating mechanism, play the effect of high speed.
Particularly, under the situation that moving contact is driven by swingle via a connecting rod, secondary actuating force generating mechanism is installed on the rotating shaft of swingle preferably.
In this case, can extend with the rotating shaft coaxle of the swingle that is connected with moving contact via linkage torsion bar is set, an end of this torsion bar is connected with the rotating shaft of swingle, and the other end is fixed on the fixed part and forms.Like this, cooperate with the action of the swingle that is driven by operating portion, and power is accumulated in torsion bar release, the distortion energy that can effectively utilize torsion bar is as secondary actuating force.
Particularly, can the rotating shaft of swingle be formed hollow tube-shape, torsion bar is connected in the hollow of rotating shaft, an end of torsion bar is fixed on the end of rotating shaft, the other end is pulled out and is fixed on the fixed part from the other end of rotating shaft.Like this, can suppress additional torsion bar and the increase of device length on the rotating shaft direction of the swingle that brings.
In addition, in other execution modes of the present invention, secondary actuating force generating mechanism can replace torsion bar and use disc spring.That is, with the rotating shaft coaxle of the swingle that is connected with moving contact via linkage disc spring is set, an end of disc spring is fixed on the rotating shaft of swingle, the other end is fixed on the fixed part.Like this, the effect same can be accessed, and the increase of the axial device length of rotation of swingle can be further suppressed with torsion bar.
Description of drawings
Fig. 1 is the structure chart of the electric power of an expression execution mode of the present invention with the on-state of gas insulation breaker.
Fig. 2 is that the electric power of execution mode of presentation graphs 1 is with the structure chart of the off-state of gas insulation breaker.
Fig. 3 is the profile of the line III-III of Fig. 1.
Fig. 4 is the stereogram that the part of feature of the execution mode of exploded view 1 is represented.
Fig. 5 is the curve chart of recruitment of driving torque of torsion bar of the execution mode of presentation graphs 1.
Fig. 6 is that the electric power of execution mode of presentation graphs 1 is with the curve chart of the driving torque of gas-insulated break.
Fig. 7 is that the electric power of execution mode of presentation graphs 1 is with the curve chart of the action of gas-insulated break.
Fig. 8 is the stereogram that the electric power of decomposition other execution modes of the present invention is represented with the part of the feature of gas-insulated break.
Fig. 9 is the stereogram of the insulator gas insulation circuit breaker of execution mode of the present invention.
Figure 10 is that the execution mode of Fig. 9 is cut a part open and the vertical view seen from the top.
Embodiment
Below, according to execution mode explanation the present invention.
(execution mode 1)
With reference to Fig. 1～Fig. 7, the gas insulation breaker of an execution mode of electric power opening and closing device of the present invention is described.Fig. 1 representes the front elevation of the major part of gas insulation breaker 100.As shown in the drawing, in the gas insulation breaker 100, the grounding container 2 of cylinder tank shape is arranged on the pallet 13 and forms, in the 2a of the inside of grounding container 2, enclose gas, the for example SF6 gas (sulfur hexafluoride gas) of insulating properties with the pressure of regulation.Take in the break 402 of turn-off current in the inside of grounding container 2.On break 402, connect linkage 401, linkage 401 be accommodated in control box 12 interior not shown operating portions and be connected.In addition, use the gas insulation breaker of 2 disconnect modes in this execution mode, but break of the present invention can be suitable under the single-point disconnect mode of single-point also naturally with 2 break.
Fig. 1 representes the state that break 402 is connected, and Fig. 2 representes the state that off action is accomplished.The profile of the line III-III of Fig. 3 presentation graphs 1, Fig. 4 representes the exploded perspective view of the major part of this execution mode.
Break 402 comprises the fixed contact 7 that is fixed on via the insulating support unit of not shown insulating cylinder etc. on the grounding container 2 and can contact the moving contact 6 that on direction of principal axis, can be provided with slidably relatively with fixed contact 7 with leaving.Moving contact 6 is via insulating support units such as not shown insulating cylinders and be bearing in sliding freely on the grounding container 2.Moving contact 6 contacts a side and forms tubular with fixed contact 7, moving contact 6 moves at direction of principal axis, and then fixed contact 7 is inserted the inside of the tube of contact moving contacts 6, perhaps pulls out and is disconnected from the inside of tube.The end opposite of the contact jaw of moving contact 6 is connected with bar-shaped connecting rod 5.
Having linkage 401 as the secondary actuating force generating mechanism of the characteristic in this execution mode is fixedly supported upon grounding container 2 via insulating cylinder 10 and is assembled in the framework 3.That is, linkage 401 has torsion bar 1 as secondary actuating force generating mechanism, rotates the swingle 4 that is bearing in freely on the framework 3, constitutes via shank connecting rod 8 that is connected with swingle 4 and the connecting rod 9 that is connected with the other end of connecting rod 8 via shank around axle around consistent with the axle center of torsion bar 1.One end of swingle 4 is connected with an end of the connecting rod 5 of break 402 via shank.Torsion bar 1 and swingle 4 and connecting rod 8 and two break 402 are corresponding and be symmetrical set respectively.Connecting rod 9 pulled into the outside of grounding container 2 via connecting rod 11.Being provided for sealing the sealing 22 of the gas of the inside 2a in the grounding container 2 in the portion pulling out of connecting rod 11, slides in sealing 22 in the side of connecting rod 11.Connecting rod 11 is connected with control box 12 interior operating portions.
The profile of the detailed structure around the torsion bar 1 of the line III-III of Fig. 3 presentation graphs 1.As shown in the figure, the axial region 4a of swingle 4 forms hollow tube-shape, and the both ends of axial region 4a rotate via bearing 14a, b and are bearing in freely on the framework 3.One side's of swingle 4 end 4b goes up an end 1a of engaging torsion bar 1 and retrains rotation each other.That is, the end 1a of torsion bar 1 and 1b are implemented the processing of spline or sawtooth, square shaft etc., the end 4b of swingle 4 is also implemented identical processing.
The other end 1b of torsion bar 1 be entrenched in to discoideus fixed part 16 implemented processing such as spline or sawtooth, square shaft and the holding section on.Fixed part 16 is combined in a side the lip portions 15a of fixed part 15 that two ends have the hollow cylindrical of bead 15a, b.The opposing party's lip portions 15b combines with bearing 14a, by framework 3 supportings.In addition, bead 15b also can directly combine with framework 3.
Because form above structure, so an end 1a of torsion bar 1 becomes the movable end of rotating with the rotation of swingle 4, other end 1b forms stiff end.
Torsion bar 1 is owing to being to accumulate the parts that drive energy through the distortion elasticity of bar-like member, so in order to obtain big energy, for example need increase length.But, as shown in Figure 3 in the gas insulation breaker 100 of this execution mode, take in torsion bar 1 along the footpath direction of grounding container 2, so existence restriction on the size of arrow F direction owing to the problem of electric field, insulation.Therefore, in this execution mode, adopt the axial region 4a of swingle 4 to form hollow, the structure of taking in torsion bar 1 in this space.Thus, can shorten the length that torsion bar 1 is given prominence to arrow F direction from framework 3.
The action that has like the gas insulation breaker 100 of this execution mode of the secondary actuating force generating mechanism of above formation is described.The action of swingle 4 and torsion bar 1 at first, is described.Swingle 4 constitutes relation shown in Figure 3 with torsion bar 1, so if swingle 4 sways, then the end 1a with the chimeric torsion bar 1 of the end 4b of swingle 4 rotates.On the other hand, fixing because the other end 1b of torsion bar 1 is chimeric with framework 3, so the rotatory force that is applied on the end 1a of torsion bar 1 is accumulated as the distortion energy of torsion bar 1.
On the position of the swingle 4 of on-state shown in Figure 1, in torsion bar 1, accumulate the distortion energy.Under state, if the open command of gas insulation breaker 100 is input to the operating portion in the control box 12, the energy of then accumulating on the for example helical spring as the drive source of operating portion drives connecting rod 11 to the arrow B direction.Thus, connecting rod 9 moves downwards in the drawings, and connecting rod 8 also moves downwards with its interlock.Follow moving of connecting rod 8, swingle 4 rotates in the direction that moving contact 6 is left from fixed contact 7 around bearing 14a, b.At this moment, the distortion energy that is accumulated on the torsion bar 1 is released, and works as the rotatory force of swingle 4.As a result, the actuating force that the horizontal direction of leaving from fixed contact 7 at moving contact 6 moves connecting rod 5 increases, and moving contact 6 leaves from fixed contact 7, and electric current is broken off rapidly.When this off action is accomplished, swingle 4 roughly butt framework 3 retainer 3a and 3b and stop, becoming off-state shown in Figure 2.
Then, set forth the action of moving to the on-state of Fig. 1 from the off-state of Fig. 2.Under the off-state, if 100 inputs go code to gas insulation breaker, then the operating portion starting in the control box 12 drives to the arrow C direction connecting rod 11.Thus, connecting rod 9 moves to the top in the drawings, and connecting rod 8 also moves to the top with its interlock.Follow moving of connecting rod 8, swingle 4 rotates, and connecting rod 5 moves in the horizontal direction with moving contact 6.At this moment,, rotate with an end 1a of the chimeric torsion bar 1 of end 4b through the rotation of swingle 4, and the other end 1b of fixing torsion bar 1 between accumulate the distortion energy.Via such action, moving contact 6 contact fixed contacts 7, the contact is switched on, and forms on-state shown in Figure 1.
At this, specify the effect that the off action of moving contact 3 is quickened through the distortion energy that is accumulated on the torsion bar 1 with reference to Fig. 4～7.In order to explain, be angle [alpha]=0 with the operating angle α of swingle shown in Figure 14 in the on-state of circuit breaker, follow off action, swingle 4 rotations are at off-state angle [alpha]=α 1 of Fig. 2.
At first, assembling is during linkage 401, assembling torsion bar 1, fixed part 15, before 16, and gas insulation breaker 100 forms off-states.Under this state, as shown in Figure 4, in the axial region 4a of the swingle 4 of open position, insert the end 1a of chimeric torsion bar 1.Afterwards, fixed part 15 is connected with bearing 14, and when fixed part 16 was connected with fixed part 15, the end 1b of torsion bar 1 inserted chimeric fixed part 15.Like this, in the off-state of gas insulation breaker 100, torsion bar 1 is so that almost unwrung state is assembled.
After the assembling of linkage 401, carry out the connection action of gas insulation breaker 100.Move through connecting, the rotation of accompanying rotation bar 4, torsion bar 1 is twisted, and accumulates elastic energy, and under the on-state of gas insulation breaker 100, the elastic energy of torsion bar 1 is maximum.
Fig. 5 represent the operating angle α of swingle 4 and only torsion bar 1 effect down swingle 4 around the driving torque of axis of rotation.Torque is 0 under the off-state of angle [alpha]=α 1, is breakdown torque Δ Tmax under the on-state of angle [alpha]=0.
Fig. 6 representes that the swingle 4 when swingle 4 is applied torque is around the driving torque in axle center through being accumulated in as the actuating force on the for example helical spring of the drive source of operating portion.(a) the expression torque of the situation of technology in the past, (b) torque of expression situation of the present invention.In addition, the driving torque of swingle 4 around the axle center that converses from the actuating force of operating portion is T0 in on-state, is T1 in off-state.In addition, in Fig. 6, T0＞T1 is that the drive source at operating portion uses helical spring situation.In addition, under the situation of the oil pressure of the drive source of operating portion employing high pressure, T0 ≈ T1.Can be clear according to Fig. 6, as shown in Figure 5 under the situation of the present invention, appended the driving energy of torsion bar, under the on-state of gas insulation breaker 100, driving torque increases Δ Tmax than the situation of technology in the past.
The stroke characteristic of the moving contact 6 when Fig. 7 representes the off action in this execution mode.(a) be technological in the past situation, (b) be situation of the present invention.At this, the moment that gas insulation breaker 100 is imported open command is the moment 0.The only structure starting in the operating portion during 0 to the moment t1 constantly is so moving contact 6 is failure to actuate.In addition, near the moving contact 6 conduction open positions, then produce braking force through the not shown buffer of being located in the operating portion, the action of connecting rod 8,9 is slowed down, and moving contact 6 slows down and stops at the open position of stipulating.Under the situation of the present invention, as shown in Figure 6 in order to increase the torque of driving movable contact 6, to compare with the situation of technology in the past, the high speed off action of moving contact 6 becomes possibility.
As described above, in this execution mode, the secondary actuating force generating mechanism based on torsion bar 1 is set near the swingle 4 of the linkage of moving contact 6, so can increase the actuating force of moving contact 6, make the off action high speed.In addition, form torsion bar 1, so break away from and installation also assembling and adjustment easily easily by spline or sawtooth or the chimeric structure of square shaft.
In addition, in this execution mode, turn to example with the high speed of off action and be illustrated, but, carry out as follows in order to make this execution mode be applicable to the high speed of connecting action.That is, make gas insulation breaker 100 form on-states, assembling torsion bar 1, energy accumulation on the torsion bar 1 under off action then connects at the next one that this energy is released in the action, becomes possibility so connect the high speed of action.
But; Because switching on and off action can not use same torsion bar and high speed; So that both move under the situation of high speed; Poewr transmission mechanism is divided into two systems etc., the secondary actuating force generating mechanism of the power of under the on-state of moving contact 6, accumulating is installed in power transfer path separately and makes the off action high speed, perhaps be equipped with to make and connect the action high speed at the secondary actuating force generating mechanism that is pulled away from the power of accumulating under the state.
At this, in this execution mode, represented in power transfer path the example of assembling torsion bar near the swingle of moving contact 6, also can consider to replace such structure, and torsion bar is configured in the operating portion in the control box 12.But; As shown in Figure 1; In gas insulation breaker 100; Between control box 12 and moving contact 6, have the linkage 401 as Poewr transmission mechanism, with respect to the movable member that constitutes linkage 401 and the inertia force of the movable member in the operating portion, the breakdown torque that the actual torque of driving movable contact 6 is set than operating portion reduces.In addition; In the movable member of the Poewr transmission mechanism that connects break 402 and control box 12 in order to keep insulation; Have and constitute by material with insulating properties; But the vertical coefficient of elasticity of insulating material is littler than iron type materials, and it is also big under identical stress, to diminish, so there is the problem of the transmission loss that produces actuating force.In addition, general, rock in the connecting rod 9 and the shank connecting portion existence of connecting rod 8 and swingle 4 and connecting rod 5, so there is the transmission needs of the actuating force problem of unnecessary time.
With respect to this, in this execution mode, near configuration torsion bar 1 moving contact 6 is so can compensate the amount of power loss under the strain of inertia force and insulating material of the parts that constitute Poewr transmission mechanism.In addition; Through being accumulated in the actuating force on the torsion bar 1, under on-state, because the linkage component that constitutes Poewr transmission mechanism is often acted on tension load or compressive load; So rocking in appearance of shank connecting portion can't see, do not produce the loss of the passing time of actuating force.
(execution mode 2)
The gas insulation breaker of other execution modes of electric power opening and closing device of the present invention then, is described.Fig. 8 representes the exploded perspective structure chart of secondary actuating force generating mechanism of feature of the gas insulation breaker 100 of this execution mode.What this execution mode and execution mode 1 were different is, replaces torsion bar and disc spring is assembled on the rotating part of swingle 4 and forms secondary actuating force generating mechanism.Other aspects are identical with execution mode 1, omit explanation so use identical Reference numeral.
As shown in Figure 8, as the disc spring 31 of secondary actuating force generating mechanism,, the opposing party's of leaf spring 31e end 31c is fixed on cylindrical shell 31f and forms through the fixing end 31d that forms the side of Vorticose leaf spring 31e on axial region 31b.The cardinal extremity rotation of axial region 31b is bearing on the cylindrical shell 31f freely, and the shaft end 31a of the front end of axial region 31b and the axial region 4a of swingle 4 are chimeric.That is, shaft end 31a is formed on spline, sawtooth or the square shaft, and is chimeric with last spline, sawtooth or the square shaft hole that forms of the axial region 4a of swingle 4.And the shaft end 31a of the axial region 31b of leaf spring 31e inserts and is assembled in the fitting portion on the axial region 4a that is formed on swingle 4 from bearing 14a side shown in Figure 2, and cylindrical shell 31f is fixedly supported upon on the framework 3.Thus, can be with the revolving force taking-up of the actuating force of on leaf spring 31e, accumulating as axial region 31b, driven in rotation bar 4.
Owing to form such structure,, can play the effect identical with execution mode 1 according to this execution mode.That is,, in the off-state of gas insulation breaker 100, make the axial region 4a of shaft end 31a and swingle 4 of disc spring 31 chimeric in order to make the off action high speed, connect action and in disc spring 31 energy accumulation.Thus, when ensuing connection was moved, the energy of on disc spring 31, accumulating was released, and can quicken the action of moving contact 6.
According to this execution mode, to compare with the torsion bar 1 of execution mode 1, the size of the footpath direction of disc spring 31 is big, but owing to can reduce the size of axis direction, so be fit to be accommodated in the grounding container 2.
(execution mode 3)
Use Fig. 9～Figure 10 that the electric power opening and closing device of other execution modes of the present invention is described.This execution mode is not the gas insulation breaker that the present invention is applicable to the grounding container that uses the container case shape, but is applicable to the example of insulator gas insulation circuit breaker.Fig. 9 cuts the stereo appearance figure that the part of the insulator gas insulation circuit breaker of this execution mode is represented open, and Figure 10 is the vertical view of seeing from the arrow directions X of Fig. 9.
Shown in these figure, insulator gas insulation circuit breaker 200 is taken in break in the tube of two insulators 19 of the tubular of relative and approximate horizontal configuration.The opposite end of two insulators 19 is connected with two faces of the framework of airtight formation 3.The framework 3 that connects two insulators 19 is arranged on the pallet 13 via insulator 20,21.Fixedly take in the control box 12 of operating portion in the pallet 13.In addition, with the insulator 19 parallel insulators 18 that are provided with side by side and respectively, take in not shown connection opposed body in the inside of insulator 18.Enclose gas, the for example SF6 gas (sulfur hexafluoride gas) of insulating properties through the pressure of regulation in the tube of each insulator 18,19,20,21 and in the framework 3.
The fixed contact 7 that constitutes break is fixed on the insulator 19 via insulating support unit such as not shown insulating cylinder; Moving contact 6 and fixed contact 7 can contact that to leave ground opposed, can be bearing in slidably on the insulator 19 at direction of principal axis via insulating support unit such as not shown insulating cylinder.Moving contact 6 constitutes with execution mode 1 with fixed contact 7 identically.The end opposite of the contact jaw of moving contact 6 via bar-shaped connecting rod 5 be accommodated in framework 3 in the swingle 4 of linkage be connected.
Shown in figure 10, take in the linkage that constitutes by swingle 4, connecting rod 8, connecting rod 9 etc. in the inside of framework 3.The structure of linkage has the structure identical with execution mode shown in Figure 1.That is, the end of the axial region 4a of swingle 4 and an end of torsion bar 1 are chimeric, and the other end is chimeric with the rotating shaft that driving is accommodated in the connection opposed body in the insulator 18.That is, though not shown, the linkage of in insulator 18, taking in opposed body, the shutter that is connected with this opposed body and opening and closing this shutter.And the rotating shaft of this linkage is pulled out from the tube end of insulator 18, and the rotating shaft via gear mechanism with swingle 4 is connected.
In addition, the insulator gas of this execution mode insulation circuit breaker 200 is owing to the outer surface of framework 3 is present in the atmosphere, so the structure of the torsion bar 1 and the connecting portion of swingle 4 is different with execution mode 1 and 2.That is, on the bearing 14 that rotates the axial region 4a that supports swingle 4 freely, rotation axis seal body 14c is set, prevents that framework 3 inner insulating properties gas 3c from flowing out in atmosphere.In addition, seal preferably is provided with more than two places at direction of principal axis.In addition, the fitting portion of the axial region 4a of an end 1a of torsion bar 1 and swingle 4 can be arranged on the atmospheric side of rotation shaft seal 14c.Under the situation of insulator gas insulation circuit breaker 200; Because from the outstanding length not restriction of framework 3 to the torsion bar 1 of arrow E direction; So after the circuit breaker assembling is accomplished, can change the torsion bar unit from the outside, make the high speed of responsiveness and adjustment become easy.The linkage of such structure is symmetrically set on two insulators 19.
Two swingles 4 and Fig. 1 likewise are connected with one connecting rod 9 via two connecting rods 8 through shank.Connecting rod 9 is made up of two connecting rod 9a, 9b that are positioned at insulator 20,21 set inside, and connecting rod 9b is connected with the connecting rod of pulling out from the lower end of insulator 21 11.Connecting rod 11 is connected with control box 12 interior operating portions.
Owing to form such structure; So according to this execution mode, through breaking off, go code the operating portion starting that makes in the control box 12, connecting rod 11 is driven at above-below direction; Then via connecting rod 9a, 9b swingle 4 is rotated, moving contact 6 is switched on, breaks off with fixed contact 7.Particularly, with execution mode 1 likewise, through the secondary actuating force generating mechanism that constitutes by torsion bar 1 actuating force of swingle 4 is increased, break off or the closing speed high speed so can make.
Particularly, under the situation of insulator gas insulation circuit breaker 200, to insulator effect high voltage, so be difficult on the position of torsion bar 1, to be provided with electric or secondary actuating force generating mechanism such as oil pressure actuator.The secondary actuating force generating mechanism of accumulating, discharging based on elastic energy such shown in this point, this execution mode is suitable.In addition, in this execution mode, replace torsion bar 1 and suitable disc spring 31 shown in Figure 8, also can play same effect.
In this execution mode, the example that 20,21 expressions of the insulator of vertical direction are two, but according to breaking off the combustion capacity number of variations of insulator, the transmission of power distance L 2 shown in Figure 9 to the center line of moving contact 6 above control box 12 also changes.In circuit breaker, under the situation of the transmission of power distance L 1 of distance container case shape circuit breaker shown in Figure 1, be generally L2＞L1 with same interrupting capacity.Therefore, the movable part quality of linkage that comprises connecting rod 9a, the 9b of this execution mode opens circuit than the container case shape of execution mode 1 and thinks highly of.
In addition, in this execution mode, the cylindrical shell of taking in torsion bar 1 so carry out the adjustment of torsion bar 1 easily, so implement the adjustment of the whole driving energy of circuit breaker easily, can be waited until the gas insulation breaker that reliability is high from framework 3 outstanding setting to atmosphere.
More than; According to a plurality of execution modes the present invention has been described; According to the present invention in the electric power opening and closing devices such as circuit breaker of linkage with attended operation portion and break; The secondary actuating force generating mechanism of the actuating force that increases moving contact is set in as near the power transfer path the moving contact of high voltage power receiving section, thus the situation that can increase than the driving energy that makes operating portion driving movable contact more effectively, can be to make electric power opening and closing device on-off action at a high speed.
In addition, secondary actuating force generating mechanism of the present invention, simple in structure, the composition of electric power opening and closing devices such as gas insulation breaker can load and unload secondary actuating force generating mechanism, so the adjustment of responsiveness is easy after accomplishing.
Claims (7)
1. gas insulation breaker, it has:
Break with fixed contact and moving contact; Wherein said fixed contact insulation supporter in inclosure has the grounding container of insulating gas, said moving contact opposed with said fixed contact and can contact with said fixed contact leave ground insulation configuration in said grounding container;
Generation is with the operating portion of said moving contact to the actuating force that is switched on or switched off the direction driving; With
The actuating force of this operating portion to the Poewr transmission mechanism that said moving contact transmits, is characterized in that,
Near the said break in the power transfer path of said Poewr transmission mechanism and with the electro-mechanical part of the earth insulation on secondary actuating force generating mechanism is set; Wherein said secondary actuating force generating mechanism is made up of elastomeric element; And said elastomeric element is being driven by said operating portion and is making said moving contact when a side's who is switched on or switched off state moves, accumulate power; And when the state to the opposing party moves release force; And when the state to said the opposing party moves, except actuating force, also be superimposed with actuating force from said secondary actuating force generating mechanism from said operating portion.
2. gas insulation breaker as claimed in claim 1 is characterized in that, said secondary actuating force generating mechanism has torsion bar.
3. gas insulation breaker as claimed in claim 2 is characterized in that, said secondary actuating force generating mechanism has swingle that is connected with said moving contact via linkage and the rotating shaft that forms the said swingle of hollow tube-shape,
One end of the said torsion bar that in the hollow of said rotating shaft, connects is fixed in an end of said rotating shaft, and its other end is pulled out from the other end of said rotating shaft and is fixed in fixed part.
4. gas insulation breaker as claimed in claim 1 is characterized in that, said secondary actuating force generating mechanism has disc spring.
5. gas insulation breaker is characterized in that having:
First insulator of hollow tube-shape, it sets in the horizontal;
Framework, it is connected with the tube end of this first insulator;
Second insulator of hollow tube-shape, its lower end edge vertical direction from this framework connects;
Pallet, the lower end of its this second insulator of supporting;
Break, it can contact and be accommodated in said first insulator with leaving, and is made up of fixed contact and moving contact;
Swingle, it is connected with said moving contact via connecting rod, and can on said contact departure direction, be configured in drivingly in the said framework said moving contact;
Linkage, its be accommodated in the said framework with said second insulator in, and said swingle is rotated driving;
Driving operations portion, it is located on the said pallet, via said linkage said moving contact is driven on said contact departure direction;
The rotating shaft of said swingle, it is rotatably freely supported on said framework;
Elastomeric element, one of which end are fixed on the rotating shaft of said swingle, and the other end is fixed on the said framework, under the side's who is switched on or switched off of said break state, accumulate power, and when the state to the opposing party moves release force; With
Insulating gas, it encloses the inside of said first insulator, said framework and said second insulator,
When said the opposing party's state moves, except actuating force, also be superimposed with release force in said break from said elastomeric element from said driving operations portion.
6. gas insulation breaker as claimed in claim 5 is characterized in that,
Said elastomeric element is a torsion bar,
This torsion bar connects in the cylindrical shell of the rotating shaft of said swingle, and is fixed on the said rotating shaft from the outstanding end of said framework wall, and its other end is fixed on the fixed part.
7. gas insulation breaker is characterized in that having:
The container of tubular, it encloses insulating gas;
Break, it makes fixed contact relatively also can contact with moving contact and is arranged in the said container with leaving;
Framework, itself and said container insulate and are arranged in the said container;
Swingle, it is connected with said moving contact, and can be on the contact departure direction of said moving contact rotatably and rotation is bearing on the said framework freely;
Linkage, the one of which end is connected with said swingle, the other end from said container airtight and the insulation pull out;
Operating portion, it is connected with the other end of said linkage, via this linkage said swingle is rotated; With
Elastomeric element; The one of which end is fixed on the rotating shaft of said swingle, and the other end is fixed on the said framework, according to the direction of rotation of said swingle and under the side's who is switched on or switched off of said break state, accumulate power; And when the state to the opposing party moves release force
When said the opposing party's state moves, except actuating force, also be superimposed with release force in said break from said elastomeric element from said operating portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-224907 | 2007-08-30 | ||
| JP2007224907A JP4703616B2 (en) | 2007-08-30 | 2007-08-30 | Gas insulated circuit breaker |
| JP2007224907 | 2007-08-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101425422A CN101425422A (en) | 2009-05-06 |
| CN101425422B true CN101425422B (en) | 2012-08-08 |
Family
ID=40555111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102151369A Active CN101425422B (en) | 2007-08-30 | 2008-09-01 | Electric power opening and closing device and gas insulation circuit-breaker |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4703616B2 (en) |
| CN (1) | CN101425422B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2990053B1 (en) * | 2012-04-26 | 2015-01-30 | Alstom Technology Ltd | DEVICE FOR ACTUATING THE CONTACTS OF A CIRCUIT BREAKER COMPRISING A TORSION BAR |
| JP6236240B2 (en) * | 2013-07-23 | 2017-11-22 | 株式会社東芝 | Gas circuit breaker |
| KR101850229B1 (en) * | 2013-12-26 | 2018-04-18 | 미쓰비시덴키 가부시키가이샤 | Opening and closing device |
| CN104465203B (en) * | 2014-12-04 | 2016-12-07 | 中国西电电气股份有限公司 | A kind of primary cut-out actuating device |
| DE102017202735A1 (en) * | 2017-02-21 | 2018-08-23 | Siemens Aktiengesellschaft | Electrical switching device |
| CN110676108A (en) * | 2019-10-17 | 2020-01-10 | 赫兹曼电力（广东）有限公司 | Transmission device and transmission method of high-voltage cabinet three-station mechanism |
| CN116092845B (en) * | 2023-04-03 | 2023-06-16 | 宁波天安智能电网科技股份有限公司 | Series digital double-break high-voltage switch device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5451731A (en) * | 1991-12-27 | 1995-09-19 | Mitsubishi Denki Kabushiki Kaisha | Circuit breaker and driving mechanism thereof |
| CN1941244A (en) * | 2005-09-26 | 2007-04-04 | 株式会社日立制作所 | Gas circuit-breaker |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2931863B2 (en) * | 1995-05-22 | 1999-08-09 | 株式会社戸上電機製作所 | Gas circuit breaker |
| JP3239353B2 (en) * | 1996-04-25 | 2001-12-17 | 株式会社戸上電機製作所 | Switch operation mechanism |
| JPH09326214A (en) * | 1996-06-05 | 1997-12-16 | Energy Support Corp | Contact structure in switching device |
-
2007
- 2007-08-30 JP JP2007224907A patent/JP4703616B2/en active Active
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2008
- 2008-09-01 CN CN2008102151369A patent/CN101425422B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5451731A (en) * | 1991-12-27 | 1995-09-19 | Mitsubishi Denki Kabushiki Kaisha | Circuit breaker and driving mechanism thereof |
| CN1941244A (en) * | 2005-09-26 | 2007-04-04 | 株式会社日立制作所 | Gas circuit-breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009059542A (en) | 2009-03-19 |
| CN101425422A (en) | 2009-05-06 |
| JP4703616B2 (en) | 2011-06-15 |
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