CN1461029A - Fluid pressure driving device for circuit breaker - Google Patents
Fluid pressure driving device for circuit breaker Download PDFInfo
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- CN1461029A CN1461029A CN03131494A CN03131494A CN1461029A CN 1461029 A CN1461029 A CN 1461029A CN 03131494 A CN03131494 A CN 03131494A CN 03131494 A CN03131494 A CN 03131494A CN 1461029 A CN1461029 A CN 1461029A
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- circuit breaker
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F1/00—Combination or multi-purpose hand tools
- B25F1/02—Combination or multi-purpose hand tools with interchangeable or adjustable tool elements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The object of the present invention is to give no ill influences upon actuating time of the hydraulic pressure apparatus of the circuit breaker, even if drawback occurs in the pilot valves. The contacts of a circuit breaker has a moving contact 2 and a stationary contact 1 for turning on/off current. A shaft, at an end portion of which is attached the moving contact, has formed at the other end of which a piston 5, and the piston is received in a cylinder 4. A directional control valve 13 exchanges oil pressure for actuating the piston. For changing over the directional control valve, pilot valves 50 and 60 are provided. Each pilot valve has a pair of valve bodies 53, 55, 63, 65, each opposing to each other, and springs 54, 64 connecting between the valve bodies. One of the valve bodies is able to stroke up to contact with the valve body of the other valve body.
Description
Technical field
The present invention relates to the fluid pressure actuated device of circuit breaker, the particularly relevant fluid pressure actuated device that is applicable to electric power with circuit breaker.
Technical background
In original circuit breaker, for example described in the Japanese kokai publication hei 7-217401 communique, the oil pressure unit of high tension loop breaker has the driven plunger that movable contact is used.Movable contact has two pistons that are connected with high-voltaghe compartment under closure state, these two pistons are driven by the high-pressure fluid that is applied to it.When interdicting in the loop, the switching valve action makes flow cycle form in the low-pressure side of piston.Closure drives switching valve with opening circuit with guide valve with guide valve.So two loop blockings are connected with switching valve with guide valve.
Patent documentation 1: Japanese kokai publication hei 7-217401 communique.
Open in the tripper described in the flat 7-217401 communique above-mentioned spy, some is unusual if the guide valve of folk prescription produces, and this guide valve can't be moved, and then only the opposing party's guide valve action produces the opening time of circuit breaker and the problem that closing time changes.With in the circuit breaker, circuit breaker disconnects the desired time (contact is from accepting clearance order to the time of separating) must be in the official hour scope with the closed desired time (contact is from accepting close command to the time that contacts) at electric power.In addition, possess under the situation that circuit breaker is arranged on mutually, need make the error of alternate operate time little different.Have again, the body or the pipeline that insert valve body are reduced, when reducing cost, wish miniaturization.
The present invention is exactly in view of above-mentioned prior art problems, its objective is that the reliability of the action that makes circuit breaker improves.Other purposes of the present invention are to make the operate time of circuit breaker slightly certain for a long time.Other purposes of the present invention are to make the circuit breaker miniaturization, reduce cost.
Summary of the invention
For achieving the above object, in the present invention, piston in driving is contained in cylinder, open and close in the fluid pressure actuated device of circuit breaker of contact with movable contact and fixed contact, it is characterized in that, be provided with the conversion driving piston pressure switching valve with open and close the closed circuit of flow cycle that switching valve therewith is connected with guide valve and open circuit guide valve, each guide valve disposes two valve bodies relatively, and the moving direction of valve body is essentially in the other direction.
In this feature, wish that valve body that a side valve body is indexed to range, the opposing party when the minimum stroke position, makes valve body dispose each valve body to each other contiguously.In addition, can make the range of valve body roughly the same, also can be with guide valve as lift valve.Have again, the flow cycle area of guide valve and the stroke of valve body are changed pro rata, also can make between valve body to connect by spring.
Description of drawings
Fig. 1 is the longitudinal section of an embodiment of relevant circuit breaker of the present invention, is the figure of expression closed circuit state.
Fig. 2 is the longitudinal section of circuit breaker shown in Figure 1, is the figure of the A-stage in the common open circuit action of expression.
Fig. 3 is the longitudinal section of circuit breaker shown in Figure 1, is the figure of the A-stage during expression one side's open circuit moves with the open circuit of guide valve when being failure to actuate.
Fig. 4 is the longitudinal section of circuit breaker shown in Figure 1, is the figure of the later stage state in the action of expression open circuit.
Fig. 5 is the longitudinal section of circuit breaker shown in Figure 4, is the figure of expression open-circuit condition.
Fig. 6 is the longitudinal section of circuit breaker shown in Figure 4, is the figure of the A-stage in the common closed circuit action of expression.
Fig. 7 is the longitudinal section of circuit breaker shown in Figure 4, is expression one side's closed circuit figure with the A-stage in the closed circuit action of guide valve under the situation of being failure to actuate.
Fig. 8 is the longitudinal section of circuit breaker shown in Figure 7, is the figure of the later stage state in the closed circuit action of expression.
Fig. 9 is the longitudinal section of other embodiment of relevant circuit breaker of the present invention, is the figure of expression closed circuit state.
Figure 10 is the longitudinal section of circuit breaker shown in Figure 9, is the figure of the A-stage in the common open circuit action of expression.
Figure 11 is the longitudinal section of circuit breaker shown in Figure 9, is the figure of the A-stage during expression one side's open circuit moves with the open circuit of guide valve when being failure to actuate.
Figure 12 is the longitudinal section of circuit breaker shown in Figure 9, is the figure of the later stage state in the action of expression open circuit.
Figure 13 is the longitudinal section of circuit breaker shown in Figure 9, is the figure of expression open-circuit condition.
Figure 14 is the longitudinal section of circuit breaker shown in Figure 9, is the figure of the A-stage in the common closed circuit action of expression.
Figure 15 is the longitudinal section of circuit breaker shown in Figure 9, is expression one side's closed circuit figure with the A-stage in the closed circuit action of guide valve when being failure to actuate.
Figure 16 is the longitudinal section of circuit breaker shown in Figure 9, is the figure of the later stage state in the closed circuit action of expression.
Embodiment
Below, use Fig. 1 to Fig. 8, an embodiment of the fluid pressure actuated device of circuit breaker of the present invention is described.Fig. 1 is the longitudinal section of the fluid pressure actuated device of expression circuit breaker.Circuit breaker is closed circuit state (state in the energising).Also the longitudinal section same below Fig. 2 with Fig. 1, operate condition difference separately.Fig. 2 is the A-stage that common open circuit moves, and Fig. 3 is the A-stage of open circuit with one in the guide valve open circuit action under the situation of being failure to actuate.In addition, Fig. 4 is the later stage state of open circuit action, and Fig. 5 is open-circuit condition (off state), and Fig. 6 is the A-stage in the common closed circuit action, Fig. 7 is closed circuit A-stage with 1 closed circuit action under the situation of being failure to actuate in the guide valve, and Fig. 8 is the later stage state in the closed circuit action.
In Fig. 1, the circuit breaker 100 that opens and closes contact has fixed contact 1 and movable contact 2.The fluid pressure actuated device 3 that drives this circuit breaker 100 has piston 5 and is contained in fluid pressure cylinder 4 in this piston 5.Fluid pressure cylinder 4 drives movable contact 2.Fluid pressure cylinder 4 is divided into little compression area side 6 and big compression area side 7 by piston 5.On little compression area side 6, the supply pressure of the action fluid of pressure accumulation in accumulator 9 that spues from fluid pressure source 8 acts on usually.In the big compression area side that forms cylinder operating room 7, by open circuit main valve 11 and closed circuit switching conversion with main valve 12, the low pressure Returning fluid pressure of the supply pressure of high pressure or container 10 optionally acts on.The fluid that container 10 reclaims and storage is discharged from this oil pressure unit.
Open circuit is bidirectional valves with main valve 11, and cylinder operating room 7 is communicated with low pressure storage device 10, with piston 5 action of opening a way.Use in the main valve guide chamber 17 with a distolateral formed open circuit of main valve 11 at open circuit, be connected with the control mouth 14 of switching valve 13.Be used for closed open circuit is arranged on valve body 15 with the spring 16 of the valve body 1 of main valve 11 rear side.The elastic force of spring 16 and open circuit are used for closed valve body 15 with the fluid pressure of the high pressure of main valve guide chamber 17.Use in the main valve guide chamber 17 at open circuit, the fluid of releasing from cylinder operating room 7 also acts on, and by the pressure of this fluid, when open circuit was low pressure with main valve guide chamber 17, valve body 15 was open.Form low-pressure chamber 18 at the back side of valve body 15, this low-pressure chamber 18 often with return side and be communicated with.Because open circuit is provided with low-pressure chamber 18 with the internal diameter of main valve guide chamber 17, form path with comparing at the valve seat 19 of the end of valve body 15 formation.Here, open circuit sets compression areas with main valve 11 and fluid pressure is, make close loaded on opening a way with main valve guide chamber 17 under the valve state from right-hand power greater than the power that left acted on from valve seat 19.
Closed circuit is bidirectional valves with main valve 12, and cylinder operating room 7 is communicated with high voltage supply side line 8a, makes it closed circuit with piston 5.The closed circuit piston 21 that has valve body 20 and touch with main valve 12 with being coupling of this valve body 20.Spring 22 is configured in the rear side of valve body 20, and the elastic force of this spring 22 acts on valve body 20.Closed circuit with main valve 12 cylinder and piston 21 between form closed circuit with main valve guide chamber 24 in, identical with main valve guide chamber 17 with open circuit, the control mouth 14 of switching valve 13 connects.In the closed circuit rear side of using the valve body 20 of main valve 12, form ancillary chamber 26, in this ancillary chamber 26, cylinder operating room 7 is communicated with by the via 25 that mind-set side from the axle of valve body 20 connects.
The diameter of the valve seat 27 of valve body 20 less than closed circuit with the internal diameter of main valve guide chamber 24, promptly less than the external diameter of piston 21, and greater than the internal diameter of ancillary chamber 26.Closed circuitly become low pressure if make with main valve guide chamber 24, then on valve body 20, effect has power, supply fluid pressure and the fluid pressure of spring 22, valve body 20 closures, this supply fluid pressure acts on the area difference part that produces owing to valve seat 27 is different with the radius of ancillary chamber 26, and this fluid pressure action is in ancillary chamber 26.If making closed circuitly becomes high pressure with main valve guide chamber 24, then by this high pressure fluid, valve body 20 openings.
The rear side axial region 32 of the valve portion of valve body 31, with supply side valve seat 33 than being path.The compression area of switching valve guide chamber 28 is greater than the differential section of the sectional area of the rear side axial region 32 of sectional area that returns side valve seat 34 and valve portion.Therefore, if make switching valve guide chamber 28 become low pressure, the supply pressure of the area by acting on supply side valve seat 33 and the area difference of the rear side axial region 32 of valve portion then, valve body 31 is mobile downwards.On the one hand, if make switching valve guide chamber 28 become high pressure,, above acting on the downward power of aforementioned area difference, and valve body 31 is moved upward then because the power that makes progress that the supply pressure of high pressure produces.In addition, switching valve guide chamber 28 is communicated with the valve chamber with control mouth 14 through choke valve 35.
More rear side at the rear side axial region 32 of valve portion is provided with maintaining body 36.Maintaining body 36 is not done the time spent at fluid pressure, mechanically keeps valve body 31.In the common action of fluid pressure action, the confining force of maintaining body 36 is for ignoring the confining force of degree.
The closed circuit closed circuit electricity consumption magnetic spiral circle 61,62 that has relative configuration with guide valve 60.If to closed circuit electricity consumption magnetic spiral circle 61 excitations, then valve body 65 is open, if to closed circuit electricity consumption magnetic spiral circle 62 excitations, then valve body 63 is open.If remove excitation, then by being arranged on the elastic force of the spring 64 between the valve body 63,65, valve body 63,65 closures to these electromagnetism solenoid 61,62.Equally, open circuit has the open circuit electricity consumption magnetic spiral circle 51,52 of relative configuration with guide valve 50.If to open circuit electricity consumption magnetic spiral circle 51 excitations, then valve body 55 is open, if to open circuit electricity consumption magnetic spiral circle 52 excitations, then valve body 53 is open.If remove excitation, then by being arranged on the elastic force of the spring 54 between the valve body 53,55, valve body 53,55 closures to these electromagnetism solenoid 51,52.
Use in the guide valve 60 closed circuit, valve body 63,65 is relative, and the moving direction of valve body 63,65 is the above-below direction among Fig. 1.Therefore, if electromagnetism solenoid 61,62 is subjected to excitation, then valve body 63,65 is because be to be in contact with one another shape to move, so valve body 63,65 limits its motion mutually.Same reason, with in the guide valve 50, two valve bodies 53,55 also limit the motions of oneself mutually at open circuit.
Closed circuit primary side with guide valve 60 is connected to the supply side of high pressure, and secondary side is connected to primary side and the switching valve guide chamber 28 of open circuit with guide valve 50.Open circuit also is connected to the side of returning of low pressure with the secondary side of guide valve 50.Closed circuitly be lift valve with guide valve 60 and open circuit with guide valve 50, the axial internal clearance of flow cycle area and valve body is slightly proportional.
The below action of the above-mentioned such present embodiment that constitutes of explanation.
In the closed circuit state of Fig. 1, cylinder operating room 7, open circuit with main valve guide chamber 17, closed circuit with main valve guide chamber 24, switching valve guide chamber 28, closed circuit with guide valve 60 primary side and the primary side of opening a way with guide valve 50 be high pressure.So these all valves are all closed.
In this state, if never illustrated main control unit sends the open circuit instruction, the electricity consumption magnetic spiral circle 51,52 of then opening a way is subjected to excitation, and open circuit is open with the valve body 55,53 of guide valve 50.Because switching valve guide chamber 28 is communicated with the side of returning of low pressure, so by acting on the high pressure of supply side valve chamber 29 and the valve chamber with control mouth 14, switching valve 13 is transformed into the open circuit operation state.At this moment, valve body 53,55 contacts at half place of whole stroke respectively, again enlarged opening.
If when sending the open circuit instruction, open circuit electricity consumption magnetic spiral circle 51 is failure to actuate, or valve body 55 maintains static work, and the problem of power that power that open circuit electricity consumption magnetic spiral circle 52 produced produced greater than open circuit electricity consumption magnetic spiral circle 51 etc. perhaps takes place, then as shown in Figure 3, valve body 53 is a total travel.If valve body 53 is a total travel, then valve body 55 is pushed by valve body 53 and closure.Flow cycle area during the lift valve opening is proportional with the lifting capacity as the axial internal clearance of lift valve.
When a side of valve body 53,55 is total travel, the flow cycle area that the action fluid flows through to secondary side from primary side, when being still in half place of total travel respectively with valve body 53,55, the action fluid slightly equates from the flow cycle area sum of primary side to two places that secondary side flows through.The conversion speed of switching valve 13 is that the action fluid is big more just fast more to the flow cycle area that secondary side flows through with the primary side of guide valve from open circuit.Because in Fig. 2 and Fig. 3, the flow cycle area equates, so the responsiveness of switching valve 13 does not change.
Because switching valve 13 is transformed into the open circuit operation state, thus control mouthfuls 14 and connected open circuit with main valve guide chamber 17 returning the side connection, become low pressure.The high-pressure fluid opening of the cylinder operating room 7 that open circuit is had by fluid pressure cylinder 4 with main valve 11 makes cylinder operating room 7 and returns side and be communicated with.In view of the above, piston 5 begins the open circuit action with movable contact 2.
Because load has high pressure on the little compression area side 6 of cylinder 4, so release the fluid of cylinder operating room 7.At this moment, the pressure of valve chamber 11a raises, and open circuit keeps open state with main valve 11.What represent among Fig. 4 is this open circuit main valve 11 state in open always open circuit action later stage.If piston 5 has been finished the open circuit action, then stop from cylinder operating room 7 to returning flowing of side.With in the main valve 11, the pressure differential of the right-hand and left among Fig. 4 disappears at open circuit.Therefore, open circuit passes through spring 16 closures with main valve 11.On the one hand, because remove, so open a way with guide valve 50 also by the elastic force closure to the excitation of electricity consumption magnetic spiral circle 51,52 of opening a way.That is, all valves are closed once more.This state as shown in Figure 5.
After switching valve 13 actions, no matter be the situation of Fig. 2, or the situation of Fig. 3, be identical action fully.Therefore, under the situation of the situation of Fig. 2 and Fig. 3, do not change opening time.In addition, if open circuit is a low pressure with main valve guide chamber 17, then meanwhile, closed circuitly also become low pressure with main valve guide chamber 24.Therefore, closed circuit piston 21 with main valve 12 temporarily moves to right-hand.But because closed circuit just closed from beginning at first with main valve 12, so even only piston 21 moves, also be closed always, its result is, can not be subjected to the closed circuit influence of using main valve 12 based on the open circuit action of above-mentioned switching valve 13.
In the open-circuit condition of Fig. 5, the situation when never illustrated main control unit sends closed circuit the instruction as shown in Figure 6.Closed circuit electricity consumption magnetic spiral circle 61,62 is subjected to excitation.Closed circuit with guide valve 60 because closed circuit electricity consumption magnetic spiral circle 61,62 is pushed open, the action fluid is from the primary side inflow secondary side of the guide valve 60 that is communicated with supply side.Switching valve guide chamber 28 becomes high pressure, and switching valve 13 is transformed into the closed-circuit operation state.At this moment, valve body 63,65 in half place's contact of total travel, can't make guide valve 60 openings bigger respectively.
When sending closed circuit instruction, be failure to actuate if closed circuit electricity consumption magnetic spiral circle 61 takes place, or valve body 65 maintains static work, or the problem of the power that produces greater than closed circuit electricity consumption magnetic spiral circle 61 of the power that produces of closed circuit electricity consumption magnetic spiral circle 62 etc., then as shown in Figure 7, valve body 63 is a total travel.If valve body 63 is a total travel, then valve body 65 is pushed by valve body 63 and closure.Identical with when instruction open circuit in closed circuit instruction, when one side of valve body 63,65 is total travel, the flow cycle area (with reference to Fig. 7) of the flow cycle that the action fluid flows through to secondary side from primary side, when being still in half place of total travel respectively with valve body 63,65 both sides, the action fluid equates generally from the flow cycle area sum (with reference to Fig. 6) of primary side to two places that secondary side flows through.Therefore, in Fig. 6 and Fig. 7, the responsiveness of switching valve 13 does not change.
As Figure 6 and Figure 7, if switching valve 13 actions, the then closed circuit main valve guide chamber 24 of using is communicated with control mouth 14.In view of the above, control mouthfuls 14 and closed circuitly become high pressure with main valve guide chamber 24, closed circuit piston 21 and the left of valve body 20 in figure with main valve 12 moves, open closed circuit usefulness main valve 12.Cylinder operating room 7 is communicated with the high-pressure side, with the closed circuit action of piston 5 beginnings of movable contact 2 one.At this moment, cylinder operating room 7 is when cylinder action beginning, and moment becomes high pressure.
Along with the pressure rising of cylinder operating room 7, by via 25, the pressure of ancillary chamber 26 also raises.But, between 5 moving periods, do not rise to supply pressure at piston.That is, surpass the supply fluid pressure, movable contact 2 etc. of the little compression area side 6 act on cylinder 4 quality, be arranged on the frictional force that does not have illustrated sealing gasket around the piston 5 etc. load and power that can driven plunger 5 produces at cylinder operating room 7.This power roughly is by the decision of the ratio of the compression area of little compression area side 6 and cylinder operating room 7.Because the compression area of cylinder operating room 7 is bigger, so the pressure of cylinder operating room 7 also is lower than supply pressure.
The pressure that is lower than this supply pressure is under the state that acts on cylinder operating room 7, and piston 21 is pushed to left by imposing on closed circuit supply pressure with main valve guide chamber 12.If piston 21 is pushed to left, then the valve body 20 of piston 21 adjacency also is pushed to left therewith.On valve body 20 and piston 21, produce the power of coming here, from following left.Be based on the pressure of working fluid of the poor part in footpath of the footpath that acts on piston 21 and valve seat 27 and the power that produces, based on the supply pressure of the poor part in footpath that acts on valve seat 27 and ancillary chamber 26 and the power of the power that produces and spring 22 etc.On the one hand, on valve body 20 and piston 21,, produce from right-hand next power owing to act on the closed circuit pressure of using the working fluid of main valve guide chamber 24.
If the power of spring 22 is set at the power of pressing less than fluid, then be lower than the supply pressure of piston 5 in closed circuit action because act on the pressure of ancillary chamber, so from the right-hand active force that comes greater than the active force that comes from left.In view of the above, valve body 20 is kept the state that is pushed to left, and piston 5 continues closed circuit action.If switching valve 13 is transformed into the closed-circuit operation state, then open circuit also becomes high pressure with main valve guide chamber 17.But open circuit is just closed before the action beginning with main valve 11, has only increased the power of closed valve, can harmful effect not arranged to closed circuit action.
If finish closed circuit action, piston 5 stops, the mobile of fluid that then move stops.Pressure in cylinder operating room 7, via 25 and the ancillary chamber 26 is increased to supply pressure.Because the power of spring 22, closed circuit valve body 20 and piston 21 with main valve 12 released to the right, and be closed closed circuit with main valve 12.If it is cut off the closed circuit instruction of using closed circuit side electromagnetism solenoid 61,62, then closed circuit with guide valve 60 closures.The result of these a succession of actions is the closed circuit state that reach as shown in Figure 1.Closed circuit action with main valve 12 and piston 5 after switching valve 13 action, identical with the situation of the situation of Fig. 6 and Fig. 7, closing time does not change.
According to present embodiment,, also can improve the reliability of the fluid pressure actuated device of circuit breaker with the speed action identical with normal conditions even under the situation of a generation problem in electromagnetism solenoid or guide valve.
Use Fig. 9 to Figure 16, other embodiment of the present invention are described.
In the present embodiment, omitted at the open circuit that uses to the embodiment shown in Figure 8 as Fig. 1 with main valve 11 and closed circuit, the control mouth 14 of switching valve 13 has been connected with the cylinder operating room 7 of fluid pressure cylinder 4 with main valve 12.In view of the above, switching valve drives direct fluid pressure cylinder.Fig. 9 represents the closed circuit state of switching on, Figure 10 represent to open a way the usually state at action initial stage, Figure 11 A-stage with the action of the open circuit under the situation of being failure to actuate in the guide valve of representing to open a way.In addition, Figure 12 represent to open a way later stage state of action, Figure 13 represents certain open-circuit condition under the off state, Figure 14 represents the A-stage in the common closed circuit action, Figure 15 represents closed circuit A-stage with the closed circuit action under the situation of being failure to actuate in the guide valve, and Figure 16 represents the later stage state in the closed circuit action.Except that omitting open circuit with main valve 11 and closed circuit with main valve 12 these points, be with Fig. 1 to the identical formation of embodiment shown in Figure 8.Therefore, the state of these Fig. 9 to Figure 16, corresponding with the state of Fig. 1 to Fig. 8 respectively.
Present embodiment be applicable to driving from low capacity to the situation of circuit breaker of capacity.In addition, in the present embodiment, because be to drive direct fluid pressure cylinder, so the error of the operate time of switching valve is to opening time or closing time has a significant impact by switching valve.But, because use guide valve, and changed the operate time of switching valve, so, the action of circuit breaker there is not harmful effect.
Guide valve in the various embodiments described above has used lift valve, replaces lift valve, also can use sliding spool valve.In addition because open circuit with guide valve and closed circuit be self contained function with guide valve, so also can be only make above-mentioned structure with guide valve and a closed circuit side with guide valve with opening a way.In addition, in the above-described embodiments, be that two valve bodies of guide valve are in contact with one another, it is not contacted.
As mentioned above, according to the present invention,,, can reduce cost so can make the circuit breaker miniaturization because two valve bodies of guide valve are disposed in 1 valve chamber relatively.In addition,, limited the action of valve body, so, also can not influence to some extent, thereby can realize the circuit breaker that reliability is high to operate time even a guide valve has problems because two valve bodies are in contact with one another.
Claims (8)
1. the fluid pressure actuated device of a circuit breaker, driving is contained in the piston in the cylinder, switching has the contact of movable contact and fixed contact, it is characterized in that, be provided with the aforementioned piston of conversion driving pressure switching valve with open and close the closed circuit of flow cycle that switching valve therewith is connected with guide valve and open circuit guide valve, each guide valve disposes two valve bodies relatively, and the moving direction of valve body is essentially in the other direction.
2. the fluid pressure actuated device of circuit breaker as claimed in claim 1 is characterized in that, aforementioned two valve bodies are configured in the valve chamber.
3. the fluid pressure actuated device of circuit breaker as claimed in claim 1 is characterized in that, an aforementioned side's valve body is indexed to range, the opposing party's valve body when the minimum stroke position, makes valve body dispose each valve body to each other contiguously.
4. the fluid pressure actuated device of circuit breaker as claimed in claim 2 is characterized in that, an aforementioned side's valve body is indexed to range, and the opposing party's valve body makes valve body dispose each valve body to each other contiguously when the minimum stroke position.
5. the fluid pressure actuated device of circuit breaker as claimed in claim 3 is characterized in that, the range of aforementioned valve body is roughly the same.
6. the fluid pressure actuated device of circuit breaker as claimed in claim 1 is characterized in that, aforementioned guide valve is as lift valve.
7. the fluid pressure actuated device of circuit breaker as claimed in claim 4 is characterized in that, the flow cycle area of guide valve and the stroke of aforementioned valve body change pro rata.
8. as the fluid pressure actuated device of each described circuit breaker of claim 1 to 7, it is characterized in that, is to be connected by spring between the aforementioned valve body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002142295 | 2002-05-17 | ||
| JP142295/2002 | 2002-05-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1461029A true CN1461029A (en) | 2003-12-10 |
| CN1255831C CN1255831C (en) | 2006-05-10 |
Family
ID=29702615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031314945A Expired - Fee Related CN1255831C (en) | 2002-05-17 | 2003-05-16 | Fluid pressure driving device for circuit breaker |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100505379B1 (en) |
| CN (1) | CN1255831C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104425175A (en) * | 2013-08-23 | 2015-03-18 | 株式会社日立制作所 | Fluid-pressure drive device for circuit breaker |
| CN105003478A (en) * | 2015-06-30 | 2015-10-28 | 河南平高电气股份有限公司 | Control valve and circuit breaker hydraulic operating mechanism using control valve |
| CN105443463A (en) * | 2015-12-01 | 2016-03-30 | 河南平芝高压开关有限公司 | Anti-jumping switch-on-off hydraulic operation mechanism and breaker with operation mechanism |
| CN112503043A (en) * | 2020-03-20 | 2021-03-16 | 平高集团有限公司 | Hydraulic operating mechanism and hydraulic control valve |
-
2003
- 2003-05-16 KR KR10-2003-0031186A patent/KR100505379B1/en active IP Right Grant
- 2003-05-16 CN CNB031314945A patent/CN1255831C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104425175A (en) * | 2013-08-23 | 2015-03-18 | 株式会社日立制作所 | Fluid-pressure drive device for circuit breaker |
| CN105003478A (en) * | 2015-06-30 | 2015-10-28 | 河南平高电气股份有限公司 | Control valve and circuit breaker hydraulic operating mechanism using control valve |
| CN105443463A (en) * | 2015-12-01 | 2016-03-30 | 河南平芝高压开关有限公司 | Anti-jumping switch-on-off hydraulic operation mechanism and breaker with operation mechanism |
| CN112503043A (en) * | 2020-03-20 | 2021-03-16 | 平高集团有限公司 | Hydraulic operating mechanism and hydraulic control valve |
| CN112503043B (en) * | 2020-03-20 | 2021-11-16 | 平高集团有限公司 | Hydraulic operating mechanism and hydraulic control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20030089503A (en) | 2003-11-21 |
| KR100505379B1 (en) | 2005-07-29 |
| CN1255831C (en) | 2006-05-10 |
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