CN101714473A - A gas circuit breaker for electricity - Google Patents
A gas circuit breaker for electricity Download PDFInfo
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- CN101714473A CN101714473A CN200910167353A CN200910167353A CN101714473A CN 101714473 A CN101714473 A CN 101714473A CN 200910167353 A CN200910167353 A CN 200910167353A CN 200910167353 A CN200910167353 A CN 200910167353A CN 101714473 A CN101714473 A CN 101714473A
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- circuit
- spring
- trigger
- moving spring
- opens
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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
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/40—Power arrangements internal to the switch for operating the driving mechanism using spring motor
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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
- H01H33/02—Details
- H01H33/42—Driving mechanisms
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a gas circuit breaker of a helical spring in a driving source, which can reduce electric solenoid load increased with driving force of a cut-off spring and can execute high speed circuit breaking, and realize common and standard components. The invention comprises the following components: a contact point (29) which is set inside a ground container (103) and has a fixed contact member (29a) and a mobile contact member (29b); a trip dog controlling mechanism which switches contact point and switches power on or off through storage capacity of a cut-off spring (26) and a communicating spring (38), and retain or release storage capacity of the cut-off spring through an electric solenoid (201) or a cut-off trigger (14a). in the trip dog controlling mechanism, an offsetting spring (15a, 15b) is is set corresponding to the electric solenoid for applying force on the cut-off trigger; the offsetting spring is provided with characteristics that elastic force of the circuit breaker is smaller when switched on than switched off, and displacement compared to the cut-off trigger is increased nonlinearly.
Description
Technical field
The present invention relates to gas circuit-breaker, particularly relate to the gas circuit-breaker that is suitable for the high voltage specification that in electric substation or switching station etc., uses.
Background technology
Be arranged at the gas circuit-breaker (below, abbreviate " circuit breaker " as) of electric substation or switching station,, in following patent documentation 1, record an example of so-called spring operating mechanism as the drive source that opens circuit or connect.In the circuit breaker of this patent documentation 1 record, as the drive source that opens circuit and connect, use helical spring especially, if the parts engaging each other by the controlling organization of triping keeps the actuating force of cut-out spring and imports clearance order, then drive solenoid and remove the engaging of parts, with this action of opening circuit.In addition, the trigger of pushing at solenoid that opens circuit is equipped with back-moving spring, always becomes the structure to the trigger application of force that opens circuit.
Patent documentation 1:(Japan) spy opens the 2007-323989 communique
In above-mentioned patent documentation 1 described gas-break switch, from its structure, can open circuit corresponding to the high speed that similar two circulations are opened circuit, still, with respect to the consideration deficiency of high capacity.That is, if the elastic force of the cut-out spring of drive source is increased, the load that then acts on each bar of the control spring of triping increases, and the solenoidal load of pushing the trigger that opens circuit also increases.Therefore, there is the engaging of the trigger that opens circuit when opening circuit action to remove time delay, can't realizes the worry of high speed.Relative therewith, usually, make the attraction increase carry out correspondence by improveing solenoidal magnetic circuit, still, if like this, then solenoidal kind increases, and therefore, existence can't realize commonization or the standardized problem of parts.
Summary of the invention
The present invention is in view of the problem of above-mentioned prior art and realize, its purpose is, use in the gas-break switch of spring at drive source, by the open circuit load of trigger of minimizing, commonization or the standardization of the solenoid of this circuit breaker of realization formation etc., with this, reduce the man-hour that designs and produces of circuit breaker.
To achieve these goals,, provide a kind of gas circuit-breaker, have according to the present invention: contact, it is arranged in the grounding container, has fixed contact therefor and movable contact; The controlling organization of triping, it opens and closes described contact by cut-out spring and accumulation of energy power of connecting spring and switches opening circuit of electric power and connect, and the accumulation of energy power that keeps or discharge described cut-out spring by the solenoid and the trigger that opens circuit, described gas circuit-breaker is characterised in that, in the described controlling organization of triping, be provided for back-moving spring accordingly with described solenoid to the described trigger application of force that opens circuit, and, it is little that this back-moving spring has the open circuit elastic force of end position of elasticity rate under the connection hold mode of circuit breaker, and with respect to the characteristic of the non-linear increase of displacement of the described trigger that opens circuit.
Promptly, constitute, though making the reseting elasticity that acts on the trigger that opens circuit is for maximum under minimum and the done state that opening circuit connecting under the hold mode, but in order to realize necessary high speed, described open circuit trigger from the engaging of described bar in the rotation of the described trigger that opens circuit after removing, along with the rotation of the trigger that opens circuit, the non-linear increase of the power of back-moving spring.Thus, particularly use in the gas-break switch of spring,, realize constituting commonization or the standardization of the solenoid etc. of this circuit breaker,, can reduce the man-hour that designs and produces of circuit breaker with this by the open circuit load of trigger of minimizing at drive source.
Moreover, according to the present invention, as the concrete structure that is used to realize described back-moving spring, constitute described back-moving spring by the compression helical spring more than at least two, and be configured to, under the connection hold mode of described circuit breaker, one end of one back-moving spring of described compression helical spring more than two is in the position of pushing the described trigger that opens circuit, and an end of another back-moving spring is in not the position to the described trigger application of force that opens circuit, perhaps also can, under the off state of described circuit breaker, push at least two back-moving springs of position configuration of the described trigger that opens circuit at described back-moving spring, perhaps also can, constitute described back-moving spring with two different compression helical springs of concentric circles combination free length, perhaps also can, constitute described back-moving spring by a different compression helical spring of pitch, perhaps also can, constitute described back-moving spring from the movable end of pushing the described trigger that opens circuit to the conical helical spring that stiff end increases by the coil average diameter.
The invention effect
According to above-mentioned the present invention, particularly use in the helical spring gas-break switch at drive source, solenoidal load with respect to the high capacity that is accompanied by circuit breaker increases, can reduce the solenoidal load of connecting hold mode and realize that high speed opens circuit, simultaneously, can realize solenoidal commonization, standardization and reduce man-hour that designs and produces of circuit breaker.
Description of drawings
Fig. 1 is the overall conceptual view figure of the gas circuit-breaker of one embodiment of the present invention.
Fig. 2 is the figure of structure of the particularly initial condition of the explanation spring operating mechanism that constitutes above-mentioned gas circuit-breaker shown in Figure 1.
Fig. 3 is the figure of structure of the particularly off state of the explanation spring operating mechanism that constitutes above-mentioned gas circuit-breaker shown in Figure 1.
Fig. 4 is the figure of structure of the particularly on-state of the explanation spring operating mechanism that constitutes above-mentioned gas circuit-breaker shown in Figure 1.
Fig. 5 is in the spring operating mechanism of above-mentioned gas circuit-breaker, and the structure of first embodiment (embodiment one) of the controlling organization of triping that becomes its feature and the figure of its action are described.
Fig. 6 is in the spring operating mechanism of above-mentioned gas circuit-breaker, and the structure of first embodiment (embodiment one) of the controlling organization of triping that becomes its feature and the figure of its action are described.
Fig. 7 is the figure of variation of open circuit trigger and reseting elasticity of the controlling organization of triping of above-mentioned first embodiment of expression (embodiment one).
Fig. 8 is in the spring operating mechanism of above-mentioned gas circuit-breaker, and the structure of second embodiment (embodiment two) of the controlling organization of triping that becomes its feature and the figure of its action are described.
Fig. 9 is the figure of variation of open circuit trigger and reseting elasticity of the controlling organization of triping of above-mentioned second embodiment of expression (embodiment two).
Figure 10 is in the spring operating mechanism of above-mentioned gas circuit-breaker, and the structure of the 3rd embodiment (embodiment three) of the controlling organization of triping that becomes its feature and the figure of its action are described.
Figure 11 is in the spring operating mechanism of above-mentioned gas circuit-breaker, and the structure of the 4th embodiment (embodiment four) of the controlling organization of triping that becomes its feature and the figure of its action are described.
Figure 12 is in the spring operating mechanism of above-mentioned gas circuit-breaker, and the structure of the 5th embodiment (embodiment five) of the controlling organization of triping that becomes its feature and the figure of its action are described.
Figure 13 is the figure of variation of open circuit trigger and reseting elasticity of the controlling organization of triping of expression above-mentioned the 4th embodiment and the 5th embodiment (embodiment four and embodiment five).
[symbol description]
1 framework
2 camshafts
3 cams
5 mobile jibs
14 triggers that open circuit
15 back-moving springs
26 cut-out springs
28 connect spring
61 little frameworks
103 grounding containers
201 solenoids of triping
400 spring operating mechanisms
401 controlling organizations that open circuit
402 connect controlling organization
403 open-circuit operation portions
404 making operation portions
Embodiment
Below, use Fig. 1 to Figure 10 to explain embodiments of the present invention.
At first, the front view of representing gas-break switch 100 of the present invention by Fig. 1.Gas-break switch 100 comprises the columnar grounding container 103 that is arranged on the stand 105, and enclosing with the pressure of regulation in the inside of this columnar grounding container 103 has for example SF
6The gas of the insulating properties of gas (six not change sulphur gas) etc.And, be extruded with lining 101,102 from the axial pars intermedia of this grounding container 103 along oblique upper.In addition, for example take in respectively in the inside of these linings 101,102 electric wire in electric substation or the switching station is electrically connected and the conductor of forming circuit.
In addition, at the sidepiece of above-mentioned stand 105 the so-called control box of taking in as the spring operating mechanism of the drive source that opens circuit or connect of this gas-break switch 100 104 is installed.On the other hand, the internal configurations at above-mentioned grounding container 103 has the contact 29 with fixed contact therefor 29b and movable contact 29a.And, on this movable contact 29a, being connected with bar 32, the link rod 31 in this bar 32 and the aforesaid operations case 104 mechanically is connected.In addition, the main shaft 4 of spring operating mechanism is arranged, on this main shaft 4, be fixed with an end of link rod 31 in the internal configurations of this control box 104.
Next, the details of spring operating mechanism of the inside that particularly is contained in its control box 104 of representing the gas-break switch 100 of its schematic configuration with reference to the above-mentioned Fig. 1 of accompanying drawing 2 explanation.
At first, in Fig. 2, by the integral body of label 400 expression spring operating mechanisms, this spring operating mechanism 400 is divided expression in the drawings by a dotted line, as its schematic configuration, as shown in the figure, comprise: open-circuit operation portion 403, it has above-mentioned main shaft 4 (with reference to Fig. 1) and cut-out spring 26; Making operation portion 404, it has camshaft 2 and connects spring 28; Connect controlling organization 402, it keeps discharging the actuating force of connecting spring 28; The controlling organization 401 of triping, it keeps discharging the actuating force of cut-out spring 26.
Next, the detailed structure of above-mentioned making operation portion 404 still is described with reference to above-mentioned Fig. 2.That is, rotation is supported with rotating shaft 2 freely in constituting the framework 1 of control box 104, at an end of this rotating shaft 2 cam 3 is installed, moreover, at this cam 3 roller 18 is installed.And, at the other end of this rotating shaft 2 gear wheel 52 is installed.Moreover, in the rotation of the pars intermedia of this gear wheel 52 end that comprises the connection spring link rod 27 of connecting spring 28 is installed freely.And, in the other end of this connection spring link rod 27 spring support 35 is installed, with this, keep to connect the distolateral of spring 28.In addition, this connection spring 28 is configured in the outside of above-mentioned connection spring link rod 27, and the opposition side of above-mentioned spring support 35 is kept by framework 1.And, be occluding with pinion 51 at above-mentioned gear wheel 52, with this, when connection spring 28 is carried out accumulation of energy, pass on actuating force from omitting illustrated motor, promptly, become pinion 51 and be driving side, and gear wheel 52 is slave end, and compress the structure of above-mentioned connection spring 28.
Next, the structure of above-mentioned connection control part 402 still is described with reference to above-mentioned Fig. 2.In this connects control part 402, can be provided with the roller 18 of the cam 3 that is installed on above-mentioned making operation portion 404 with engaging and to connect breech lock 19.In addition, as shown in the figure, this is connected breech lock 19 and is " V " word shape roughly, and, be installed as rotation freely by connecting a 19a at its bend.And, be formed with at the end of " V " of this connection breech lock 19 font and be used for the holding section 19b that engages with the roller 28 of above-mentioned cam 3, and, at its other end above-mentioned roller 21 is installed.And, distolateral at another of " V " of above-mentioned connection breech lock 19 font, at pars intermedia the back-moving spring 20 that one end is fixed in framework 1 is installed with above-mentioned axle 19a.
And, connect trigger 22 with one end and above-mentioned roller 21 can butt mode be configured.That is, this connection trigger 22 forms crooked shape, and, be installed as rotation freely by connect axle 22a at this bend.In addition, support this 22a freely with respect to framework 1 rotation.And this is connected trigger 22 and also extends (that is, trigger 22b) to the opposition side with above-mentioned roller 21 butts one side, and this trigger 22b is configured in and connects the position that the plunger 311 of solenoid 301 can butt.
Next, still use above-mentioned Fig. 2 that the detailed construction of above-mentioned open-circuit operation portion 403 is described.In this open-circuit operation portion 403, as can be known clear and definite from figure, at main shaft 4 the roughly pars intermedia of the mobile jib 5 of " Y " word shape of profile is installed, be separately installed with roller 6,7 in two ends of this mobile jib 5.And, rotate the end that cut-out spring link rod 25 is installed freely via pin 25a in the remaining end of above-mentioned mobile jib 5.And this cut-out spring link rod 25 connects above-mentioned framework 1 and extends to the outside of framework, at its other end flange 34 is installed, and keeps this cut-out spring 26 between this flange and framework 1.That is, in the cut-out spring 26 of the periphery that is configured in cut-out spring link rod 25, the one end is kept by flange 34, and its other end is kept by framework 1.
And, adjacent with above-mentioned open-circuit operation portion 403 and dispose the controlling organization 401 of triping, also use above-mentioned Fig. 2 that the detailed construction of this controlling organization 401 of triping is described.That is, in this trips controlling organization 401, the breech lock 8 that opens circuit that pars intermedia is a curved shape is installed at the axle 8a that is fixed in above-mentioned framework 1.That is, this breech lock 8 portion's perforation axle 8a therebetween that opens circuit becomes rotation freely with this.And, being formed with holding section 8b in an end of this breech lock 8 that opens circuit, this holding section 8b engages with the roller 7 of an end that is arranged on the mobile jib 5 that constitutes above-mentioned open-circuit operation portion 403.And, in this other end of opening circuit breech lock 8 roller 10 is installed.And, be equipped with at the pars intermedia of above-mentioned axle 8a and the holding section 8b of the breech lock 8 that opens circuit and be used to make the breech lock 8 that opens circuit to reset to an end of the back-moving spring 9 of origin-location.Framework 1 is fixed in the other end of this back-moving spring 9.
Moreover, can dispose second breech lock 11 that opens circuit with the roller 10 of an end that is arranged on the above-mentioned breech lock 8 that opens circuit with engaging.In addition, be through with axle 11a, rotate with this second breech lock 11 that opens circuit is installed freely by little framework 61 supporting of being fixed in above-mentioned framework 1 at this second pars intermedia that opens circuit breech lock 11.And, as can be known clear and definite from figure, second breech lock 11 that opens circuit forms the crooked shape of portion in the central (breakthrough part of above-mentioned axle 11a), moreover, second pars intermedia that opens circuit axle 11a in the breech lock 11 and roller 13 be equipped with an end be fixed in little framework 61 be used to make second breech lock 11 that opens circuit reset to the other end of the back-moving spring 12 of origin-location.And, roller 13 is installed in second end of opening circuit breech lock 11 of the opposition side of the holding section 11b that engages with roller 10.And the trigger 14a that opens circuit of roughly " L " word shape that will can engage with this roller 13 is configured to its leading section and roller 13 butts.In addition, the leading section of this trigger 14a that the opens circuit plane of containing curved surface by its end forms.
And, in the bight of the above-mentioned trigger 14a that opens circuit roughly " L " word a 14c being installed, this 14c rotates supported freely with respect to little framework 61, moreover, open circuit trigger 14a quadrature and the first trigger bar 14b is installed with above-mentioned.And, can dispose the plunger 211 of triping with solenoid 201 with this first trigger bar 14b butt.In addition, at the above-mentioned pars intermedia that opens circuit trigger 14a one end being installed is fixed in little framework 61 and is used to make the trigger 14 that opens circuit to reset to the back-moving spring 15 of origin-location.
Next, with reference to above-mentioned Fig. 2 even comprise Fig. 3 and Fig. 4, the operating principle of the spring operating mechanism 400 of formation as mentioned above be described.That is the situation of the on-off action progress of its contact, is described successively according to these variations from Fig. 2 to Fig. 4.
At first, the action that changes to off state shown in Figure 3 from on-state shown in Figure 2 is described.
Under this on-state, if with respect to circuit breaker input clearance order, solenoid 201 excitations are used in triping of the control part 401 of then triping, with this, plunger 211 is outstanding upward, and this outstanding plunger 211 is pushed the first trigger bar 14b (with reference to the arrow among the figure).Its result unties the trigger 14a and second that opens circuit the engaging of breech lock 11 that open circuit.
Untiing with second breech lock 11 that opens circuit that engages of the trigger 14a that opens circuit becomes rotation freely, and by from the pushing of the roller 10 of the breech lock 8 that opens circuit, is that the center is along being rotated counterclockwise (with reference to the arrow among the figure) with axle 11a.Like this, the breech lock 8 that opens circuit becomes rotation freely, and by from the pushing of the roller 7 of mobile jib 5, the breech lock 8 that opens circuit is that the center is along being rotated counterclockwise (with reference to the arrow among the figure) with axle 8a.Thus, the holding section 8b of the breech lock 8 that opens circuit moves, and mobile jib 5 becomes rotation freely, that is, because the restriction of untiing the cut-out spring 26 that is in compressive state so far, so this cut-out spring 26 discharges potential energy, with this, mobile jib 5 is along being rotated counterclockwise (with reference to the arrow among the figure).Like this, follow in this, also drive link rod 31,32, that is, movable contact 29a leaves and opens contact from fixed contact therefor 29b.And, if this cut-out spring 26 drains potential energy, the release of then opening circuit.In addition, this moment, the outer peripheral face of the roller of the end of mobile jib 56 and cam 3 is butt and stopping roughly as shown in Figure 3.
Next, the action that changes to on-state shown in Figure 4 from off state shown in Figure 3 below is described.At first, go code, then connect with solenoid 301 excitations if under off state shown in Figure 3, import.Like this, connection is given prominence to downwards and is pushed and connect trigger 22 with the plunger 311 of solenoid 301.Thus, connect trigger 22 edges and rotate counterclockwise and remove the roller 21 of connection breech lock 19 and engaging of connection trigger 22.
By removing above-mentioned roller 21 and connecting engaging of trigger 22, the connection bar 19 of limited in rotation system becomes rotation freely so far, and, by pressing force, connect breech lock 19 along rotating counterclockwise (with reference to the arrow among the figure) from the roller 18 of cam 3.Thus, remove to connect the engaging of roller 18 of breech lock 19 and cam 3.
And, engaging of roller 18 by removing this connection breech lock 19 and cam 3, the restriction of the rotation of cam 3 disappears, therefore the elastic force of connecting spring 28 discharges potential energy, with this, connect spring link rod 27 and move downwards, simultaneously, gear wheel 52 is that the center is along being rotated counterclockwise (with reference to the arrow among the figure) with cam 3 with rotating shaft 2.And, along with the rotation of cam 3, by with the effect of the roller 6 of the outer peripheral face butt of this cam 3, make mobile jib 5 along clockwise rotating (with reference to the arrow among the figure).
After this, if cam 3 rotates half-turn substantially, then the outer peripheral face of cam 3 is by roller 6 butts of its maximum curvature radius part with mobile jib 5.When the cut-out spring link rod 25 that is connected with mobile jib 5 at this moment, rises cut-out spring 26 is compressed to roughly original position.
On the other hand, drain potential energy, then make contact 29 if connect spring 28.In addition, when this ON Action finished, each bar 8,11,14 that constitutes the controlling organization 401 of triping reset to original position by the power of its back-moving spring 9,12,15 respectively.Thus, keep cut-out spring 26.Moreover the state that this ON Action finishes as shown in Figure 4.Under this state, if the input clearance order, the action of then can opening circuit at once.
At this, after ON Action finishes, the accumulation of energy action of connecting spring 28 is described with reference to Fig. 4.In addition, in the drawings, finish if circuit breaker detects the release potential energy of connecting spring 28, then starting diagram abridged motor makes pinion 51 along turning clockwise.The gear wheel 52 of interlock is along rotating counterclockwise (with reference to the arrow among the figure) like this, with it.Follow in this, spring 28 is connected in compression when connecting spring link rod 27 along counter-clockwise swing.If about 180 ° of these gear wheel 52 rotations (for example, with reference to above-mentioned Fig. 2) then by the instruction of diagram abridged limit switch, stop above-mentioned motor.At this moment, the actuating force of the connection spring 28 by by compression, gear wheel 52 is wanted further along being rotated counterclockwise, still, owing to engage with connection bar 19 with the roller 18 of the coaxial cam 3 of gear wheel 52, and, the roller 21 of connecting bar 19 engages (for example, with reference to above-mentioned Fig. 2) with connection trigger 22, therefore stop the rotation of cam 3 and gear wheel 52, with this, keep connecting the elastic force of spring 28.Thus, as above-mentioned shown in Figure 2, that is, contact is an on-state once more, and cut-out spring 26 and connection spring 28 turn back to initial condition by compression.
Next, below in the present invention, increase explanation and be used to reduce the method for load of trigger of opening circuit as commonization of the trigger of realizing constituting circuit breaker or solenoid etc. or aims of standardization.In addition, this method is particularly in the spring operating mechanism of the inside of the control box 104 that is contained in gas-break switch, particularly comprise and constitute the triping of this controlling organization 401 of triping with the open circuit mechanism of the back-moving spring 15 that breech lock 11, the trigger 14 that opens circuit, the trigger that opens circuit use of solenoid 201, second, below, be called the controlling organization of triping.
(embodiment one)
At first, use Fig. 5 to Fig. 7 to explain the first embodiment of the present invention (embodiment one) below.In addition, respectively, the state of the controlling organization of triping when amplifying expression connection circuit breaker in accompanying drawing 5 amplifies the state when representing to open circuit in Fig. 6.And, in accompanying drawing 7, represent the open circuit anglec of rotation of trigger 14 and the relation of reseting elasticity in this controlling organization of triping.
As can be known clear and definite from Fig. 5 and Fig. 6, in the present embodiment, the back-moving spring 15 that constitutes the above-mentioned controlling organization of triping is made of two back-moving spring 15a, 15b.In addition, an end of these back-moving springs is fixed in little framework 61.Under the hold mode when connection shown in Figure 5, a back-moving spring 15a is to trigger 14 application of forces that open circuit, and still, another back-moving spring 15b is not connected with the trigger 14 that opens circuit.And from this state, if make the trigger 14 that opens circuit along being rotated counterclockwise by the action of opening circuit, the at first compression reseting spring 15a of trigger 14 that then opens circuit goes back compression reseting spring 15b therein on the way.And, under off state shown in Figure 6, become the state of trigger 14 these both sides' of compression that open circuit back-moving spring 15.
At this, acting as when ON Action finishes then of above-mentioned back-moving spring 15 second opened circuit resetting of breech lock 11 and made the trigger 14 that opens circuit reset to original position.Particularly, in above-mentioned Fig. 6, in the homing action of trigger 14 that opens circuit,, have as the friction torque Tc of the axle 14c of the trigger that opens circuit of load and little framework 61 with as the elastic force of the back-moving spring 15 of actuating force about the relation of the power that acts on this trigger 14 that opens circuit.In addition, though second roller 13 that opens circuit breech lock 11 join with the trigger 14 that opens circuit,, its pressing force only act as second component of back-moving spring 12 that opens circuit breech lock 11, therefore the open circuit homing action of trigger 14 of influence hardly can be considered at this.
Usually, friction torque Tc is littler than the driving torque that is produced by back-moving spring 15, still, in the time of particularly a little less than the elastic force of this back-moving spring 15, makes the driving torque minimizing of trigger reset to original position of opening circuit.Its result, the resetting of trigger 14 of opening circuit is slow, sometimes, and the open circuit failure that engages of roller 13 with the trigger 14 that opens circuit of breech lock 11 of second when ON Action finishes, with this, the action of opening circuit that may lead to errors and move.On the other hand, cross when strong at the elastic force of this back-moving spring 15, the trigger 14 that opens circuit also continues swing after resetting to the origin-location, therefore, and may fail when ON Action finishes with second the engaging of roller 13 that opens circuit breech lock 11.Therefore, the inventor waits the necessity of recognizing the elastic force of adjusting back-moving spring.
About the adjustment of the elastic force of above-mentioned back-moving spring, by accompanying drawing 7 expressions the open circuit anglec of rotation of trigger 14 and the relation between the reseting elasticity.
Under the on-state of circuit breaker, the anglec of rotation of the trigger 14 that opens circuit is zero (0).In the prior art, only constitute back-moving spring 15 usually by the single line spring.Relative therewith, as mentioned above,,, therefore, compare with the elastic force that has only single line shape spring of prior art as above-mentioned shown in Figure 7 owing to constitute this back-moving spring 15 by two back-moving spring 15a, 15b according to the present invention, can reduce the elastic force of a back-moving spring 15a.And, opening circuit when action, push the trigger 14 that opens circuit by plunger 211, with this, untiing moment that engages of roller 13 of opening circuit breech lock 11 with second, the trigger 14 that opens circuit also removes to push another back-moving spring 15b.In addition, about the spring constant of these two back-moving springs, preferably make the constant big (constant of the constant of back-moving spring 15a＜back-moving spring 15b) of the constant of back-moving spring 15b than back-moving spring 15a.And under the state when opening circuit end, effect has this reseting elasticity of two, with this, constitutes the elastic force that surpasses in the prior art.
According to the back-moving spring 15 of embodiment 1, opening circuit when beginning action, act on the power of the above-mentioned trigger 14 that opens circuit such as above-mentioned shown in Figure 5.That is, as shown in the figure, if ignore the friction of plunger, the load F of solenoid 201 then
211Be second the open circuit roller 13 of breech lock 11 and the frictional force μ F of the trigger 14 that opens circuit
13, axle 14c and the friction torque Tc of little framework 61, the elastic force F of back-moving spring 15a
15aAnd.
But, in the prior art, as mentioned above, if reseting elasticity is increased, then also increase at the reseting elasticity of connecting hold mode thus, so the load of solenoid 201 increases in order to quicken to open circuit resetting of trigger.Relative therewith, according to embodiments of the invention, back-moving spring is two (plural numbers), and, connecting under the hold mode, only acting on the elastic force of a back-moving spring 15a, therefore compared with prior art, the load of solenoid 201 can be reduced,, the action high speed that opens circuit can be made with this.And resetting of the trigger 14 that opens circuit when particularly finishing about ON Action by the elastic force of two above-mentioned back-moving springs, also can carried out homing action in the roughly the same time with the situation of prior art.
As mentioned above, in the present embodiment, constitute the back-moving spring of the trigger 14 that opens circuit by two (plural number) springs, and, by constituting, a back-moving spring 15a always pushes the trigger 14 that opens circuit, and another back-moving spring 15b pushes the trigger 14 that opens circuit in the action of opening circuit, can realize together that the open circuit stable snap action of roller 13 and the trigger 14 that opens circuit of breech lock 11 and the solenoidal load when opening circuit the action beginning of second when ON Action finishes reduces the high speed motion that produces.
(embodiment two)
Next, the second embodiment of the present invention (embodiment two) as shown in Figure 8.In addition, in this embodiment, constitute back-moving spring 15 by three compression helical spring 15a, 15b, 15c, and these compression helical springs (length) are constituted, connecting under the hold mode, only a back-moving spring 15a pushes the trigger 14 that opens circuit, and two back-moving spring 15b, 15c are not according to breaking road trigger 14 in addition.
The anglec of rotation of the trigger 14 that opens circuit in the above embodiments two and the relation of reseting elasticity are as shown in Figure 9.In addition, in the spring constant of these back-moving springs, preferably make the constant big (constant of the constant of back-moving spring 15a＜back-moving spring 15b or the constant of back-moving spring 15c) of the constant of back-moving spring 15b, 15c than back-moving spring 15a.And, the spring constant of back-moving spring 15b, 15c can be identical also can be inequality.That is, in the present embodiment, constitute rotation compression reseting spring 15b, 15c successively by the trigger that opens circuit that produces by the action of opening circuit, thus, can reduce the reseting elasticity of connecting under the hold mode,, can obtain the effect identical with the foregoing description one with this.
In addition, so long as those skilled in the art just should be as can be known clear and definite, if further increase the radical of above-mentioned back-moving spring, and, constitute only connecting under the hold mode back-moving spring and push the trigger that opens circuit, then still can access effect same as the previously described embodiments.
(embodiment three)
Moreover the third embodiment of the present invention (embodiment three) as shown in Figure 10.In addition, the structure of this embodiment three is also identical with the foregoing description one, for making up the structure of two back-moving spring 15a, 15b, still, different with the foregoing description one aspect their structure of concentric combination.In addition, in the structure of this embodiment three, the drift of back-moving spring 15a by changing the outside and inboard back-moving spring 15b can make the variation of elastic force of the rotation of following the trigger 14 that opens circuit identical with above-mentioned back-moving spring shown in Figure 7, has non-linear.And, also can play the effect identical by this embodiment three, and further,, can reduce the possessive volume of this back-moving spring more by being configured to concentric shape by a plurality of springs with the foregoing description one.
(embodiment four, embodiment five)
In addition, the fourth embodiment of the present invention (embodiment four) as shown in Figure 11, and the fifth embodiment of the present invention (embodiment five) is as shown in Figure 12.In these embodiments, as can be known clear and definite from figure, though only constitute back-moving spring 15, in embodiment four (with reference to Figure 11), do not wait by the pitch that makes this spring by a spring, in the anglec of rotation of the elastic force and the trigger that opens circuit, have non-linear.And, in embodiment five (with reference to Figure 12), by adopt at a end that this spiral helicine spring and the trigger 14 that opens circuit join and in contrast between the stiff end that is fixed in little framework 61 of side, so-called cone shape spring that the average diameter of this coil is increased, make in the relation of the anglec of rotation of the elastic force and the trigger that opens circuit, have above-mentioned non-linear.
In addition, an example of the relation of the anglec of rotation of the trigger 14 that opens circuit among these embodiment and reseting elasticity as shown in Figure 13.That is, at the rotation initial stage of the trigger 14 that opens circuit in the action of opening circuit, this elastic force keeps linear spring constant, and still, if surpass the anglec of rotation of certain regulation, then the wire harness of spring joins each other and the active volume number is reduced, and spring constant increases.In addition, as can be known clear and definite, by the embodiment four and the embodiment five of formation like this, the also performance effect identical with the foregoing description one, and, owing to only constitute by a back-moving spring, so identical with the foregoing description three, can reduce its possessive volume more.
In addition, in the various embodiments described above, as being used to make the trigger 14 that opens circuit to reset to the mechanism of origin-location, the situation of utilizing spiral helicine spring has been described especially, but the present invention is not limited thereto, as can be known clear and definite as those skilled in the art, as long as realize that above-mentioned function is just passable, thereby can use other mechanism.
In addition, in various embodiments of the present invention, the controlling organization of triping is first the open circuit so-called tertiary structure of breech lock, the trigger that opens circuit of breech lock, second that opens circuit, but, the present invention is not limited thereto, for example also can omit second breech lock that opens circuit, with this, constitute first open circuit breech lock roller directly with open circuit the trigger butt.
Claims (8)
1. gas circuit-breaker has:
Contact, it is arranged in the grounding container, has fixed contact therefor and movable contact;
The controlling organization of triping, it opens and closes described contact by cut-out spring and accumulation of energy power of connecting spring and switches opening circuit of electric power and connect, and keeps or discharge the accumulation of energy power of described cut-out spring by the solenoid and the trigger that opens circuit,
Described gas circuit-breaker is characterised in that,
In the described controlling organization of triping, be provided for back-moving spring accordingly with described solenoid to the described trigger application of force that opens circuit, and, it is little that this back-moving spring has the open circuit elastic force of end position of elasticity rate under the connection hold mode of circuit breaker, and with respect to the characteristic of the non-linear increase of displacement of the described trigger that opens circuit.
2. gas circuit-breaker according to claim 1 is characterized in that,
So that the mode of the non-linear increase of spring constant constitutes described back-moving spring along with the moving of when action of opening circuit of the described trigger that opens circuit.
3. gas circuit-breaker according to claim 1 is characterized in that,
The described controlling organization of triping constitutes, has the bar that engages with the described trigger that opens circuit under the hold mode connecting, and, opening circuit of described circuit breaker open circuit described in the action trigger from the engaging of described bar in the rotation of the described trigger that opens circuit after removing, the spring constant of described back-moving spring increases.
4. gas circuit-breaker according to claim 1 is characterized in that,
Described back-moving spring is made of the compression helical spring more than at least two, and be configured to, under the connection hold mode of described circuit breaker, one end of one back-moving spring of described compression helical spring more than two is in the position of pushing the described trigger that opens circuit, and an end of another back-moving spring is in not the position to the described trigger application of force that opens circuit.
5. gas circuit-breaker according to claim 1 is characterized in that,
Under the off state of described circuit breaker, the position of pushing the described trigger that opens circuit at described back-moving spring disposes two back-moving springs at least.
6. gas circuit-breaker according to claim 1 is characterized in that,
Constitute described back-moving spring with two different compression helical springs of concentric circles combination free length, and described back-moving spring is configured to, under the connection hold mode of described circuit breaker, one end of one spring is in the position of pushing the described trigger that opens circuit, and an end of another spring is in not the position to the described trigger application of force that opens circuit.
7. gas circuit-breaker according to claim 1 is characterized in that,
Compression helical springs different by pitch constitute described back-moving spring.
8. gas circuit-breaker according to claim 1 is characterized in that,
Constitute described back-moving spring from the movable end of pushing the described trigger that opens circuit to the conical helical spring that stiff end increases by the coil average diameter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008250705A JP4634493B2 (en) | 2008-09-29 | 2008-09-29 | Gas circuit breaker for electric power |
| JP2008-250705 | 2008-09-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101714473A true CN101714473A (en) | 2010-05-26 |
| CN101714473B CN101714473B (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910167353XA Active CN101714473B (en) | 2008-09-29 | 2009-08-21 | A gas circuit breaker for electricity |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4634493B2 (en) |
| KR (1) | KR101608185B1 (en) |
| CN (1) | CN101714473B (en) |
| TW (1) | TWI373059B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101729763B1 (en) | 2014-08-22 | 2017-05-02 | 정영옥 | Multi-circuit load break switch having alternation insulation gas |
| KR101739005B1 (en) * | 2014-12-31 | 2017-05-23 | 주식회사 효성 | Spring operation device of circuit breaker |
| JP6781514B2 (en) | 2016-04-22 | 2020-11-04 | 株式会社日立製作所 | Circuit breaker and circuit breaker for gas insulation switchgear |
| EP3264435B1 (en) * | 2016-06-27 | 2019-04-24 | ABB Schweiz AG | Medium voltage circuit switch or breaker |
| CN106409595B (en) * | 2016-10-12 | 2018-10-02 | 河南平芝高压开关有限公司 | High speed grounding switch test method and experiment trigger device and high speed grounding switch |
| KR102352558B1 (en) * | 2020-03-12 | 2022-01-19 | 엘에스일렉트릭(주) | Motor spring operator |
| US20230236366A1 (en) * | 2020-09-30 | 2023-07-27 | Fujikura Ltd. | Optical connector |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58152738U (en) * | 1982-04-05 | 1983-10-13 | 東洋電機製造株式会社 | High-speed disconnection device |
| JPS59129121U (en) * | 1983-02-18 | 1984-08-30 | 春日電機株式会社 | oil dart pot |
| JPH0650905Y2 (en) * | 1987-11-20 | 1994-12-21 | 三菱電機株式会社 | Circuit breaker |
| JPH0864087A (en) * | 1994-08-18 | 1996-03-08 | Toshiba Corp | Contact parting time delaying mechanism of circuit-breaker |
| FR2744563B1 (en) * | 1996-02-06 | 1998-04-03 | Schneider Electric Sa | CONTROL MECHANISM OF A CIRCUIT-BREAKER WITH RELEASABLE LOCK ON A SHORT-CIRCUIT |
| JP3679945B2 (en) * | 1999-04-06 | 2005-08-03 | 株式会社東芝 | Circuit breaker operating device |
| WO2004053911A1 (en) * | 2002-12-09 | 2004-06-24 | Mitsubishi Denki Kabushiki Kaisha | Air circuit breaker |
| JP2005209554A (en) * | 2004-01-26 | 2005-08-04 | Hitachi Ltd | Power breaker |
| JP2006019148A (en) | 2004-07-01 | 2006-01-19 | Matsushita Electric Works Ltd | Electromagnetic switch |
| JP2007087836A (en) * | 2005-09-26 | 2007-04-05 | Hitachi Ltd | Gas-blast circuit breaker for electric power |
| JP4833739B2 (en) * | 2006-06-01 | 2011-12-07 | 株式会社日立製作所 | Breaker |
-
2008
- 2008-09-29 JP JP2008250705A patent/JP4634493B2/en active Active
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2009
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI373059B (en) | 2012-09-21 |
| KR101608185B1 (en) | 2016-03-30 |
| TW201013726A (en) | 2010-04-01 |
| KR20100036168A (en) | 2010-04-07 |
| CN101714473B (en) | 2012-10-10 |
| JP2010080412A (en) | 2010-04-08 |
| JP4634493B2 (en) | 2011-02-16 |
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