CN104916505A - Early actuation auxiliary low voltage circuit breaker and electrical interlock system - Google Patents
Early actuation auxiliary low voltage circuit breaker and electrical interlock system Download PDFInfo
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- CN104916505A CN104916505A CN201510359325.3A CN201510359325A CN104916505A CN 104916505 A CN104916505 A CN 104916505A CN 201510359325 A CN201510359325 A CN 201510359325A CN 104916505 A CN104916505 A CN 104916505A
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- circuit breaker
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- voltage circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
Abstract
Disclosed are an early actuation auxiliary low voltage circuit breaker and an electrical interlock system. The early auxiliary low voltage circuit breaker comprises a shell seat, and an auxiliary contact, an operating mechanism, a primary contact and an early actuator that are mounted on the shell seat. The early actuator comprises a transmission portion that mates with the operating mechanism in a contact manner, and a driving portion that mates with the auxiliary contact in a contact manner. When a switch-off action of the operation mechanism drives the primary contact to change from the break state to the connection state, the operating mechanism meanwhile drives the early actuator to change from a first stable state to a second stable state. The process in which the early actuator changes from the first stable state to the second state comprises an early actuation process of driving the auxiliary contact to change the switch state, and a delay process of reaching the second stable state. During the early actuation process, the operating mechanism drives via the transmission portion the driving portion of the early actuator to act on the auxiliary contact such that the auxiliary contact changes its switch state. The electrical interlock system is formed of two early actuation auxiliary low-voltage breakers. The circuit breaker and electrical interlock system according to the present invention has the advantages of simple structures and high reliability.
Description
Technical field
The present invention relates to low-voltage circuit breaker field, being specifically related to a kind of can be used for sets up the low-voltage circuit breaker dedicated of electrical interlocks system, particularly a kind of early dynamic auxiliary low-voltage circuit breaker.
Background technology
As everyone knows, low-voltage circuit breaker is as a kind of low-voltage electrical apparatus, be usually used in setting up electrical system, as set up electrical interlocks system with low-voltage circuit breaker, it comprises multiple low-voltage circuit breaker, and there is chain control planning between this intrasystem multiple low-voltage circuit breaker, when the low-voltage circuit breaker of in system performs closing operation, the conversion of the on off state of other low-voltage circuit breaker in this closing operation action energy control system (i.e. the conversion of the closing of the main contact/disjunction state of low-voltage circuit breaker).For two low-voltage circuit breaker composition electrical interlocks systems, a kind of conventional method can be, two low-voltage circuit breakers are respectively equipped with auxiliary contact and shunt release, wherein the normally opened contact of the auxiliary contact of a low-voltage circuit breaker is connected with the shunt release of another low-voltage circuit breaker, when a low-voltage circuit breaker performs closing operation, the normally opened contact that its auxiliary contact is ordered about in the action of its closing operation is converted to closed, to connect the electric power loop with the shunt release of another low-voltage circuit breaker of this normally opened contact coupled in series, thus another low-voltage circuit breaker change over switch state causing it to control by this shunt release.But, existing low-voltage circuit breaker, the time sequencing existing defects of the action of its main contact and the action of auxiliary contact, concrete manifestation form as: the action of auxiliary contact is almost synchronous with the action of the main contact of circuit breaker; The action of the action of auxiliary contact and the main contact of circuit breaker does not have the sequencing determined; The action of auxiliary contact is later than the action of the main contact of circuit breaker.Obviously, the time sequencing defect of the above-mentioned form that existing low-voltage circuit breaker exists, for establishment electrical interlocks system, there is potential safety hazard or integrity problem, such as, when setting up with two low-voltage circuit breakers the electrical interlocks system supplied power with double circuit, if the disjunction in advance of the main contact of another low-voltage circuit breaker that it controls can not be locked before the main contact of a low-voltage circuit breaker closes, then serious security incident can be caused.Therefore, action for the main contact of the action with circuit breaker that there is auxiliary contact is almost synchronous, or action does not have the sequencing determined, and the action of auxiliary contact is later than the existing low-voltage circuit breaker of the defect of the action of the main contact of circuit breaker, its scope of application certainly will be very limited.Should understand, in existing low-voltage circuit breaker, if do not have to control motivation structure morning that auxiliary contact early moves the main contact in circuit breaker, then this circuit breaker can not be dynamic auxiliary low-voltage circuit breaker morning, because the morning that it does not have an auxiliary contact is moved move function the morning of main contact, even if there is the possibility of action early than the action of the main contact of circuit breaker of auxiliary contact, but because it have ignored the specialized designs relevant to early dynamic function, so auxiliary contact can not be obtained early move time long enough in main contact, sufficiently stable technique effect, cause still there is risk when setting up electrical interlocks system thus, because the reason of the solenoid due to shunt release, disjunction/closed the State Transferring of auxiliary contact arrives the startup moment of shunt release instantaneously, have one period of lag time, if the time span moved the morning of auxiliary contact in main contact is less than the start phase of shunt release, the positive lock of advancement then still can not be implemented to the main contact of another circuit breaker that it controls.Obviously, the technical problem to be solved in the present invention is, low-voltage circuit breaker increases and moves device special morning, to guarantee that auxiliary contact is early than main contact action, the morning simultaneously also obtaining auxiliary contact moves time long enough, sufficiently stable effect, as early the dynamic time reaches the delay length being greater than shunt release, to improve the safety and reliability of electrical interlocks system, thus the using function of expansion circuit breaker and the scope of application, meet the demand of current low-voltage circuit breaker produce market.
Based on the fail safe improving electrical interlocks system, reliability, to the key technology requirement that low-voltage circuit breaker design proposes, be exactly that auxiliary contact should be more Zao than main contact dynamic, and have stable between two actions, sufficiently long effective time interval, and the concrete technical scheme realizing this technical requirement can have various ways, what the present invention adopted is on low-voltage circuit breaker, increase the mode that special morning moves device, compared with alternate manner, it is simple that mode of the present invention has structure, low cost of manufacture, the feature of good reliability, in addition, the suitability that the solution of the present invention does not relate to existing auxiliary contact is improved.Certainly, do not get rid of the alternate manner that may occur, as the mode by improving auxiliary contact structure, but the overall structure that this mode not only relates to auxiliary contact is improved, but also the suitability that can involve breaker structure is improved, therefore need to increase substantially manufacturing cost, the related problem needing to solve further may be caused in addition, as the compatibility issue between auxiliary contact and circuit breaker.But, low-voltage circuit breaker increases and moves device special morning, it realizes difficulty and is, early the structure of dynamic device need meet simple requirement, because this mode is related to the operating mechanism of circuit breaker, and the operational motion performed by operating mechanism, be not only combined floodgate, and also have separating brake, detain again, trip free, therefore also to resolve, the early increase of dynamic device does not hinder the original combined floodgate of operating mechanism, separating brake, detain again, trip free action, and perform separating brake at operating mechanism, detain again, during trip free action, stop the problem that the mistake of contingent auxiliary contact is early dynamic.
Summary of the invention
The object of the invention is to the defect overcoming prior art, provide that a kind of structure is simple, reliability is high morning dynamic auxiliary low-voltage circuit breaker and electrical interlocks system.
For achieving the above object, present invention employs following technical scheme:
A kind of early dynamic auxiliary low-voltage circuit breaker, comprise shell block 1, and the auxiliary contact 3, operating mechanism 4 and the main contact that are arranged on shell block 1, described dynamic auxiliary low-voltage circuit breaker morning also comprises early dynamic device 5, early dynamic device 5 comprises the driving section 51a that can contact with operating mechanism 4 and coordinate and contacts the drive division 51b coordinated with auxiliary contact 3, drive main contact to be in the process of closure state by disjunction State Transferring at the feed motion of described operating mechanism 4, operating mechanism 4 drives simultaneously and early moves device 5 and be transformed into the second stable state by the first stable state; Move process that device 5 is transformed into the second stable state by the first stable state described morning to comprise and move process the morning that early dynamic device 5 first orders about auxiliary contact 3 change over switch state, then early dynamic device 5 arrives the time delay process of the second stable state again, and in early dynamic process, operating mechanism 4 drives the drive division 51b of early dynamic device 5 to act on auxiliary contact 3 by driving section 51a and makes auxiliary contact 3 change over switch state.
Further, the trip free action of described operating mechanism 4, pull work or separating brake action can make early dynamic device 5 return to the first stable state or be stabilized in the first stable state again, also make main contact be converted to disjunction state or be stabilized in disjunction state simultaneously.
Further, move device 5 described morning and comprise support 51, spring 52, support 51 is arranged on the fixture of shell block 1 or operating mechanism 4 by revolute pair, support 51 is provided with driving section 51a and drive division 51b, the elastic force of spring 52 can order about support 51 and rotates and arrive the first stable state, and operating mechanism 4 can order about support 51 and rotates and reach the second stable state.
Further, the axis hole 51c that the revolute pair moving device 5 described morning comprises rotation axis 53 and is arranged on support 51, rotation axis 53 is arranged on the fixture of shell block 1 or operating mechanism 4, and the axis hole 51c on support 51 is sleeved on rotation axis 53; Described support 51 one end is provided with axis hole 51c, and the other end is provided with the drive division 51b that arrange corresponding to the auxiliary push-rod 3a of auxiliary contact 3, extends be provided with the driving section 51a that arrange corresponding to the actuating arm 41a on the Rocker arm 41 of operating mechanism 4 in the middle part of support 51 to side; Described spring 52 is torsion spring, and it is sleeved on rotation axis 53, and its one end connects with support 51, and the other end connects with shell block 1.
Further, the drive division 51b moving device 5 when early dynamic device 5 is in the first stable state morning contacts with auxiliary contact 3, and the drive division 51b early moving device 5 when early dynamic device 5 is in the second stable state is separated with auxiliary contact 3; The morning that drive division 51b and auxiliary contact 3 are early dynamic device 5 by the process touching auxiliary contact 3 change over switch state moves process, is time delay process by auxiliary contact 3 change over switch state to the process of the second stable state.
Further, when operating mechanism 4 is in "on" position, early the actuating arm 41a of dynamic device 5 contacts with driving section 51a, operating mechanism 4 be in trip free, again detain or gate-dividing state time actuating arm 41a be separated with driving section 51a.
Further, described dynamic auxiliary low-voltage circuit breaker morning comprises multiple auxiliary contact, and operating mechanism 4 is by early moving the conversion that device 5 drives the on off state of multiple auxiliary contact simultaneously.
Further, also comprise the Alarm contactor 2 be arranged on shell block 1, described Alarm contactor 2 coordinates with the Rocker arm 41 of operating mechanism 4; The contact A L performing trip free action alarm contact 2 at operating mechanism 4 is converted to disjunction state; The contact A L performing button or separating brake action alarm contact 2 again at operating mechanism 4 is converted to closure state; The contact A L performing feed motion alarm contact 2 at operating mechanism 4 remains on closure state.
Further, moving in morning the mode that in process, early dynamic device 5 orders about auxiliary contact 3 change over switch state is make the contact A X of auxiliary contact 3 be closure state by disjunction State Transferring.
Present invention also offers a kind of electrical interlocks system, comprise the first above-mentioned dynamic auxiliary low-voltage circuit breaker QF1 and second morning early dynamic auxiliary low-voltage circuit breaker QF2; Described first early the auxiliary contact 3 of dynamic auxiliary low-voltage circuit breaker QF1 contact A X with second morning dynamic auxiliary low-voltage circuit breaker QF2 shunt release C coupled in series; Described second early the auxiliary contact 3 of dynamic auxiliary low-voltage circuit breaker QF2 contact A X with first morning dynamic auxiliary low-voltage circuit breaker QF1 shunt release C coupled in series.
Present invention also offers a kind of electrical interlocks system, comprise the first above-mentioned dynamic auxiliary low-voltage circuit breaker QF1 and second morning early dynamic auxiliary low-voltage circuit breaker QF2; Described first early the contact A L of Alarm contactor 2 of dynamic auxiliary low-voltage circuit breaker QF1 and the contact A X of auxiliary contact 3 with second morning dynamic auxiliary low-voltage circuit breaker QF2 shunt release C coupled in series; Described second early the contact A L of Alarm contactor 2 of dynamic auxiliary low-voltage circuit breaker QF2 and the contact A X of auxiliary contact 3 with first morning dynamic auxiliary low-voltage circuit breaker QF1 shunt release C coupled in series.
Further, the start phase t of the delay time T moving the time delay process of device 5 morning of the described first early dynamic auxiliary low-voltage circuit breaker QF1 second early shunt release C of dynamic auxiliary low-voltage circuit breaker QF2 that is greater than that it controls; The start phase t of the first early shunt release C of dynamic auxiliary low-voltage circuit breaker QF1 that the delay time T moving the time delay process of device 5 morning of the described second early dynamic auxiliary low-voltage circuit breaker QF2 is greater than that it controls.
Morning of the present invention, dynamic auxiliary low-voltage circuit breaker was by the mechanical type early dynamic device structure of advantages of simple, auxiliary contact can not only early than the main contact action of circuit breaker when closing operation to achieve low-voltage circuit breaker, and moves the morning of auxiliary contact have the effective time interval between the action of main contact.Adopt the electrical interlocks system that morning, dynamic auxiliary low-voltage circuit breaker realized of the application, before effectively can guaranteeing that the main contact of a low-voltage circuit breaker in electrical interlocks system is closed, the disjunction in advance of the main contact of another low-voltage circuit breaker.In addition, low-voltage circuit breaker is also provided with Alarm contactor, by being connected in series in loop by the shunt release of another low-voltage circuit breaker in auxiliary contact, Alarm contactor and electrical interlocking system, can prevent the handle malfunction of low-voltage circuit breaker from causing the connection of shunt release.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic perspective view of an embodiment of dynamic auxiliary low-voltage circuit breaker morning of the present invention;
Fig. 2 be shown in Fig. 1 morning of the present invention dynamic auxiliary low-voltage circuit breaker the partial structurtes schematic perspective view of embodiment, shed Alarm contactor 2 and auxiliary contact 3 in figure.
Fig. 3 be shown in Fig. 1 morning of the present invention dynamic auxiliary low-voltage circuit breaker the exploded perspective view moving device 5, Rocker arm 41 and auxiliary contact 3 morning of embodiment.
Fig. 4 be shown in Fig. 3 morning of the present invention dynamic auxiliary low-voltage circuit breaker the matching relationship schematic diagram moving device 5, Rocker arm 41 and auxiliary contact 3 morning of embodiment, for early dynamic auxiliary low-voltage circuit breaker is in the matching relationship of trip free state, again buckle-like state or gate-dividing state shown in figure.
Fig. 5 be shown in Fig. 3 morning of the present invention dynamic auxiliary low-voltage circuit breaker the matching relationship schematic diagram moving device 5, Rocker arm 41 and auxiliary contact 3 morning of embodiment, for early dynamic auxiliary low-voltage circuit breaker is in the matching relationship of "on" position shown in figure.
Fig. 6 be shown in Fig. 3 morning of the present invention dynamic auxiliary low-voltage circuit breaker the design of part schematic diagram of the support 51 moving device 5 morning of embodiment.
Fig. 7 to Fig. 9 is the electrical block diagram of an embodiment of the electrical interlocks system adopting dynamic auxiliary low-voltage circuit breaker establishment morning of the present invention.Wherein:
Figure 7 shows that first early dynamic auxiliary low-voltage circuit breaker QF1 be in trip free state;
Figure 8 shows that first early dynamic auxiliary low-voltage circuit breaker QF1 be in buckle-like state or gate-dividing state again;
Figure 9 shows that first early dynamic auxiliary low-voltage circuit breaker QF1 be in "on" position.
Embodiment
Below in conjunction with the embodiment that accompanying drawing 1 to 6 provides, further illustrate the embodiment of dynamic auxiliary low-voltage circuit breaker morning of the present invention.Morning of the present invention, dynamic auxiliary low-voltage circuit breaker was not limited to the description of following examples.
Dynamic auxiliary low-voltage circuit breaker, comprised shell block 1, and was arranged on Alarm contactor 2, auxiliary contact 3, operating mechanism 4 and the main contact (not shown) on shell block 1 morning of the present invention.Main contact is arranged in shell block 1, and operating mechanism 4 is connected with main contact can drive the closed and disjunction of driving head; Alarm contactor 2 and auxiliary contact 3 are arranged on the both sides of operating mechanism 4, and operating mechanism 4 is connected with Alarm contactor 2 and auxiliary contact 3, and Alarm contactor 2 and auxiliary contact 3 can be driven to close and disjunction.Described dynamic auxiliary low-voltage circuit breaker morning also comprises and moves device 5 morning be arranged on shell block 1, early dynamic device 5 comprises the driving section 51a that can contact with operating mechanism 4 and coordinate and contact the drive division 51b coordinated with auxiliary contact 3, and operating mechanism 4 drives auxiliary contact 3 connection realization to close and disjunction by early moving device 5.Early dynamic device 5 has the first stable state and the stable operating state of the second stable state two, drive main contact to be in the process of closure state by disjunction State Transferring at the feed motion of described operating mechanism 4, operating mechanism 4 drives simultaneously and early moves device 5 and be transformed into the second stable state by the first stable state; The trip free action of operating mechanism 4, pull work or separating brake action can make early dynamic device 5 return to the first stable state or be stabilized in the first stable state again, also make main contact be converted to disjunction state or be stabilized in disjunction state simultaneously.Move process that device 5 is transformed into the second stable state by the first stable state described morning to comprise and move process the morning that early dynamic device 5 first orders about auxiliary contact 3 change over switch state, then early dynamic device 5 arrives the time delay process of the second stable state again, and in early dynamic process, operating mechanism 4 drives the drive division 51b of early dynamic device 5 to act on auxiliary contact 3 by driving section 51a and makes auxiliary contact 3 change over switch state; After auxiliary contact 3 completes change over switch state again, early dynamic device 5 completes the conversion of two stable operating states through time delay process, early dynamic device 5 complete be transformed into the second stable state by the first stable state while or afterwards, main contact completes by the conversion of disjunction state to closure state.What the present invention adopted is the mode increasing early dynamic device on low-voltage circuit breaker, make operating mechanism in the process driving main contact to close a floodgate, auxiliary contact can early than the main contact action of circuit breaker, have that structure is simple, the feature of low cost of manufacture, good reliability, and be applicable to existing auxiliary contact.
Shell block 1 of the present invention, Alarm contactor 2, auxiliary contact 3, operating mechanism 4 and main contact can adopt existing structure, and the installation relation between them and mounting structure can be adopted in a known manner.The auxiliary contact 3 of the present embodiment adopts built-in frame mode, and namely it is arranged in shell block 1.The present invention also can not arrange Alarm contactor, the object arranging Alarm contactor is the shunt release of another circuit breaker in auxiliary contact, Alarm contactor and electrical interlocks system to connect, to prevent handle people from causing shunt release power supply to be connected for misoperation, cause misoperation.Alarm contactor 2 can adopt built-in frame mode, also can adopt the frame mode of external, comprise: the subsidiary frame mode being optionally arranged on the Alarm contactor 2 outside shell block 1; Or the reserved frame mode being installed in Alarm contactor 2 on operating mechanism 4 and shell block 1.Alarm contactor 2 should have the general utility functions of the index signal of the trip status as provided circuit breaker, it sets up the mechanical connecting relation that is coupled with the action piece that can react trip action in operating mechanism 4, and the action piece of described reaction trip action is as Rocker arm 4 or tripping (not shown) etc.The present invention preferentially adopts following frame mode: described Alarm contactor 2 coordinates with the Rocker arm 41 of operating mechanism 4; The contact A L performing trip free operation alarm contact 2 at operating mechanism 4 is converted to disjunction state; The contact A L performing button or sub-switching operation alarm contact 2 again at operating mechanism 4 is converted to closure state; The contact A L performing closing operation alarm contact 2 at operating mechanism 4 remains on closure state.
The concrete structure moving device 5 described morning can have kinds of schemes, a kind of preferred scheme as shown in Figures 3 to 5, Fig. 3 is the explosive view of early dynamic device, and Fig. 4 is that early dynamic device is in the structure chart of first stable state of " high position ", and Fig. 5 is that early dynamic device is in the structure chart of second stable state of " low level ".Move device 5 described morning and comprise support 51, spring 52, support 51 is arranged on shell block 1 by revolute pair, the elastic force of spring 52 can order about support 51 and rotates and arrive " high position " state, and the Rocker arm 41 of operating mechanism 4 can order about support 51 and rotates and reach " low level " state.Described revolute pair can have multiple way of realization, preferred form is as shown in Fig. 3 to Fig. 7, the axis hole 51c that it comprises rotation axis 53 and is arranged on support 51, rotation axis 53 is arranged on shell block 1, does not certainly also get rid of the mode adopting and be arranged on the fixture (not shown) of operating mechanism 4; Described support 51 one end is provided with axis hole 51c, and the other end is provided with the drive division 51b that arrange corresponding to the auxiliary push-rod 3a of auxiliary contact 3, extends be provided with the driving section 51a that arrange corresponding to the actuating arm 41a on the Rocker arm 41 of operating mechanism 4 in the middle part of support 51 to side.Axis hole 51c on support 51 is sleeved on rotation axis 53, and support 51 moving axis 53 that can rotate is rotated.When support 51 rotate in place clockwise, namely support 51 rotates to " high position " state and arrives " high position " state; When support 51 rotate in place counterclockwise, namely support 51 rotates to " low level " state and arrives " low level " state.Spring 52 can adopt polytype, the torsion spring of preferred type as shown in Fig. 3 to Fig. 7, it is sleeved on rotation axis 53, its one end connects with support 51, the other end connects with shell block 1, the elastic force direction of torsion spring 52 is ordered about support 51 and is rotated clockwise, namely orders about support 51 and rotates and final arrival " high position " state to " high position " state.
The support 51 moving device 5 described morning is provided with driving section 51a and drive division 51b; Described driving section 51a coordinates with the actuating arm 41a on the Rocker arm 41 of operating mechanism 4, under operating mechanism 4 is in trip free, again button or gate-dividing state, actuating arm 41a is separated (as shown in Figure 4) with driving section 51a, and actuating arm 41a contacts (as shown in Figure 5) with driving section 51a in operating mechanism 4 closing operation process, when operating mechanism 4 is in "on" position, early the actuating arm 41a of dynamic device 5 contacts with driving section 51a.Described drive division 51b coordinates with the auxiliary push-rod 3a of auxiliary contact 3, the drive division 51b moving device 5 when early dynamic device 5 is in first stable state of " high position " morning contacts with auxiliary contact 3, and the drive division 51b early moving device 5 when early dynamic device 5 is in second stable state of " low level " is separated with auxiliary contact 3; Early the drive division 51b of dynamic device 5 arrives second stable state of " low level " again after being to be separated with auxiliary contact 3.The morning that drive division 51b and auxiliary contact 3 are early dynamic device 5 by the process touching auxiliary contact 3 change over switch state moves process, is time delay process by auxiliary contact 3 change over switch state to the process of the second stable state.
The operating mechanism of the present embodiment circuit breaker with the course of action early moving device is, under the gate-dividing state of circuit breaker, main contact is in disjunction state, when early dynamic device is in first stable state of " high position ", the actuating arm 41a of operating mechanism 4 is separated with the driving section 51a early moving device, early the dynamic drive division 51b of device contacts with the auxiliary push-rod 3a of auxiliary contact 3, and drive division 51b compresses auxiliary push-rod 3a makes the normally opened contact AX of auxiliary contact be in disjunction state (as shown in Figure 4).
When circuit breaker is changed to "on" position by gate-dividing state, the actuating arm 41a of operating mechanism 4 touches the driving section 51a of early dynamic device, and drive support 51 to rotate counterclockwise, namely the drive division 51b of support 51 rotates to " low level " state, and drive division 51b is separated gradually with the auxiliary push-rod 3a of auxiliary contact 3; Auxiliary push-rod 3a resets and makes the contact A X of auxiliary contact 3 be closure state by disjunction State Transferring, and the loop conducting at auxiliary contact 3 place can be made to be converted to gate-dividing state to drive the shunt release of another low-voltage circuit breaker in electrical interlocks system to go to control another low-voltage circuit breaker by "on" position; After auxiliary contact 3 change over switch state, operating mechanism 4 continues to drive support 51 to rotate makes drive division 51b be separated completely with the auxiliary push-rod 3a of auxiliary contact 3 and arrive second stable state of " low level ", also drive main contact to be transformed into closure state, complete circuit breaker by the conversion (as shown in Figure 5) of gate-dividing state to "on" position.The time that main contact is transformed into closure state equals or is later than early dynamic device to be transformed into the time of the second stable state.Before drive division 51b is separated completely with the auxiliary push-rod 3a of auxiliary contact 3, auxiliary contact 3 has completed change over switch state, and drive division 51b and auxiliary push-rod 3a are not separated also to be had early action and use; The structure that preferred drive division 51b is separated with auxiliary push-rod 3a, can increase the time of time delay process, effectively can be controlled the time of time delay process by the distance arranging separation.
Circuit breaker by "on" position to gate-dividing state or trip free State Transferring time, operating mechanism 4 resets, the actuating arm 41a of operating mechanism 4 is separated with the driving section 51a early moving device, the main contact of circuit breaker is converted to disjunction state by closure state, early the support 51 of dynamic device 5 orders about by the elastic force of spring 52 and rotates clockwise, and drive drive division 51b turned to by " low level " and be stabilized in " high position " state, making the early dynamic drive division 51b of device contact with the auxiliary push-rod 3a of auxiliary contact 3 and compress auxiliary push-rod 3a makes the normally opened contact AX of auxiliary contact be converted to disjunction state by closure state.The driving section 51a that the present embodiment early moves device is arranged on the swing path of the actuating arm 41a of operating mechanism 4, directly be not connected with operating mechanism 4, substantially reducing the impact on operating mechanism 4, without the need to carrying out large change to existing circuit breaker, existing most of circuit breaker can be adapted to.Circuit breaker by trip free state to detaining State Transferring again, change to gate-dividing state time, early dynamic device maintains " high position " state.
From operating mechanism and the course of action early moving device, the corner stroke that the support 51 moving device 5 described morning turns to " low level " from " high position " comprises, the morning turning to the contact A X change over switch state of ordering about auxiliary contact 3 from " high position " state moves stroke, and turns to the time delay stroke of " low level " state from contact A X change over switch state.So-called corner stroke is exactly support 51 turns to from " high position " angle that " low level " turn over, its correspondence be early move device 5 is transformed into " low level " state control procedure by " high position ".So-called early dynamic stroke is exactly support 51 turns to from " high position " state the angle that the contact A X change over switch state of ordering about auxiliary contact 3 turns over, its correspondence be early move the morning that device 5 first orders about the contact A X change over switch state of auxiliary contact 3 to move process.So-called time delay stroke is exactly support 51 turns to from the contact A X change over switch state of auxiliary contact 3 angle that " low level " state turns over, its correspondence be early dynamic device 5 and then arrive the time delay process of " low level " state.As can be seen here, the present invention moves stroke and time delay stroke by the corner stroke of support 51 and morning of comprising thereof, the key control procedure creating early dynamic device 5 and the morning comprised thereof move process and time delay process, thus the morning achieving early dynamic auxiliary low-voltage circuit breaker moves function.
Move device 5 described morning and be preferably mounted at shell block 1, the suitability that can not relate to existing operating mechanism and auxiliary contact is improved, and simple for implementation structure, low cost of manufacture, good reliability effect provides precondition.Certainly the alternate manner that can obtain same effect therewith is not got rid of, as early dynamic device 5 is arranged in the fixture (not shown) of operating mechanism 4.Fixture described herein, refer to the frame (not shown) forming operating mechanism 4 or the part be fixed in frame, and operating mechanism 4 is fixedly connected by described frame and shell block 1.The early this mounting structure of dynamic device 5, relative to the mode be arranged on auxiliary contact, there is certain superiority, because early dynamic device 5 is arranged on auxiliary contact, the overall structure that so not only can relate to auxiliary contact is improved, but also the suitability that can involve a series of circuit breaker internal structure such as operating mechanism and shell block is improved, and need increase substantially manufacturing cost, other related problem that must solve further may be caused in addition, as the compatibility issue between auxiliary contact and circuit breaker.
The process being transformed into the second stable state by the first stable state about early dynamic device 5 comprises moves process the morning that early dynamic device 5 first orders about auxiliary contact 3 change over switch state, then early dynamic device 5 arrives the description of the time delay process of the second stable state again, can be interpreted as further: the contact A X change over switch state of auxiliary contact 3 is transformed into the process control of " low level " state by early dynamic device 5 from " high position "; Early the process being transformed into " low level " state from " high position " of dynamic device 5 includes early dynamic process and time delay process two control procedures, and process of early moving occurs prior to time delay process; Early dynamic process first orders about the contact A X change over switch state of auxiliary contact 3 for realizing early dynamic device 5; Time delay process closes the delay time T of the switch state of the contact A X of late auxiliary contact 3 for obtaining main contact.Should understand: described delay time T, early dynamic device 5 arrives to firm the time experienced between the moment of " low level " state from the moment of the contact A X change over switch state of ordering about auxiliary contact 3 exactly.
Because described time delay process obtains by the structural design early moving device 5, the structural design therefore passing through early dynamic device 5 can obtain desirable delay time T.Particularly in the low-voltage circuit breaker with rapid closing function, the closed speed of main contact can be realized due to it and staff service speed has nothing to do, therefore can guarantee the stability of described delay time T, accuracy and reliability.Because the structural design early moving device 5 can be optimized according to the requirement of delay time T, as shortened early dynamic process as far as possible, and/or add long delay process etc., therefore, the early existence of dynamic device 5, be that early dynamic auxiliary low-voltage circuit breaker is different from the key point of pressure common circuit breaker, the low-voltage circuit breaker without early dynamic device 5 does not have effective early dynamic function usually.
The concrete structure that described delay time T and operating mechanism 4 move device 5 is early relevant, the numerical value can wanted by Optimal Structure Designing, and the selection of this numerical value is also relevant with the configuration mode of shunt release.The configuration mode of conventional shunt release can have two kinds: a kind of is the standard configuration shunt release of this morning of dynamic auxiliary low-voltage circuit breaker product, and it can be built-in, also can be external; Another kind is non-standard configuration shunt release, though it plug-in mode can be used for this morning of dynamic auxiliary low-voltage circuit breaker product, its start phase may be different from described standard configuration shunt release.Described delay time T is preferably greater than the start phase t of the shunt release C that it controls, namely the start phase t of the shunt release C that this delay time T controls is greater than, in employing standard configuration shunt release configuration mode situation, namely be greater than the start phase t of standard configuration shunt release C, like this, when two identical dynamic auxiliary low-voltage circuit breakers morning set up into electrical interlocks system, effective early dynamic characteristic reliably effectively can be ensured.May needs for plug-in non-standard configuration shunt release can be met better, the design of delay time T can be selected according to the start phase Rational Parameters of most of shunt release product.
Move the conversion that device 5 achieves the on off state of auxiliary contact 3 in the process being transformed into the second stable state by the first stable state morning of the present invention, the mode of the contact A X change over switch state of auxiliary contact 3 can have two kinds, wherein a kind of is be the mode of closure state by disjunction State Transferring, another kind is the mode being converted to disjunction state by closure state, and these two kinds of modes are all applicable to the present invention.By selecting " normally closed " or " often opening " mode of the contact A X of auxiliary contact 3, just can realize at described two kinds of way choice.
Below in conjunction with the embodiment that Fig. 3 to Fig. 9 provides, further illustrate the embodiment of the electrical interlocks system adopting dynamic auxiliary low-voltage circuit breaker establishment morning of the present invention, electrical interlocks system of the present invention is not limited to the description of following examples.
See Fig. 3 to Fig. 9, the electrical interlocks system that employing of the present invention dynamic auxiliary low-voltage circuit breaker morning of the present invention is set up, it comprises the first dynamic auxiliary low-voltage circuit breaker QF1 and second morning early dynamic auxiliary low-voltage circuit breaker QF2, described first early the contact A L of Alarm contactor 2 of dynamic auxiliary low-voltage circuit breaker QF1 and the contact A X of auxiliary contact 3 with second morning dynamic auxiliary low-voltage circuit breaker QF2 shunt release C coupled in series, described second early the contact A L of Alarm contactor 2 of dynamic auxiliary low-voltage circuit breaker QF2 and the contact A X of auxiliary contact 3 with first morning dynamic auxiliary low-voltage circuit breaker QF1 shunt release C coupled in series.Obviously, by the structure of the shunt release C coupled in series of the contact A L of the Alarm contactor 2 and contact A X of auxiliary contact 3 and second dynamic auxiliary low-voltage circuit breaker morning QF2, the power supply that can effectively prevent the people of handle 42 from moving caused shunt release C for misoperation is connected, and causes the misoperation of the electrical interlocks system of early dynamic auxiliary low-voltage circuit breaker and composition thereof.Owing to adopting dynamic auxiliary low-voltage circuit breaker morning of the present invention, so can effectively ensure: first early dynamic auxiliary low-voltage circuit breaker QF1 perform in closing operation process, second early dynamic auxiliary low-voltage circuit breaker QF2 just can reliable separating brake before the main contact of the first early dynamic auxiliary low-voltage circuit breaker QF1 is closed; Second early dynamic auxiliary low-voltage circuit breaker QF2 perform in closing operation process, first early dynamic auxiliary low-voltage circuit breaker QF1 just can reliable separating brake before the main contact of the second early dynamic auxiliary low-voltage circuit breaker QF2 is closed.Certainly not arranging Alarm contactor 2 is also to realize having electrical interlocks system that early dynamic auxiliary controls.
Below in conjunction with the embodiment that Fig. 3 to Fig. 9 provides, further illustrate the course of work of employing dynamic auxiliary low-voltage circuit breaker morning of the present invention.
When first early dynamic auxiliary low-voltage circuit breaker QF1 is in trip free state, support 51 is by the elastic force effect of spring 52, be in " high position " state, driving section 51a on support 51 does not contact with the actuating arm 41a on the Rocker arm 41 of operating mechanism 4, drive division 51b on support 51 contacts with the auxiliary push-rod 3a of auxiliary contact 3, the contact A X of auxiliary contact 3 is in disjunction state, simultaneously because the contact A L of Alarm contactor Alarm contactor 2 is also in disjunction state, the shunt release coil C be connected in control loop can not switch on power, second early dynamic auxiliary low-voltage circuit breaker QF2 be failure to actuate, the state of each action piece as shown in figs. 4 and 7.
When first early dynamic auxiliary low-voltage circuit breaker QF1 is in button or gate-dividing state again, support 51 is by the elastic force effect of spring 52, be in " high position " state, driving section 51a on support 51 does not contact with the actuating arm 41a on the Rocker arm 41 of operating mechanism 4, drive division 51b on support 51 contacts with the auxiliary push-rod 3a of auxiliary contact 3, the contact A X of auxiliary contact 3 is in disjunction state, the contact A X of auxiliary contact 3 is in disjunction state, and the contact A L of Alarm contactor 2 is detaining or is being converted to closed in sub-switching operation process, but the contact A X due to auxiliary contact 3 is still disjunction state, so the shunt release coil C be connected in control loop still can not switch on power, second early dynamic auxiliary low-voltage circuit breaker QF2 still can not action, the state of each action piece as shown in Figure 4 and Figure 8.
When first early dynamic auxiliary low-voltage circuit breaker QF1 starts to make closing operation, the Rocker arm 41 of operating mechanism 4 moves to combined floodgate direction thereupon, the driving section 51a that actuating arm 41a simultaneously on Rocker arm 41 promotes on support 51 rotates counterclockwise, drive division 51b is driven to move downward, drive division 51b first orders about auxiliary contact 3 auxiliary push-rod 3a in morning in dynamic stroke and moves, the contact A X of auxiliary contact 3 is converted to closed, the contact A L of Alarm contactor 2 is still in closure state, so the power supply being connected on the shunt release coil C in control loop is switched on, second early dynamic auxiliary low-voltage circuit breaker QF2 action, then drive division 51b continues to move downward, and be separated completely with the auxiliary push-rod 3a of auxiliary contact 3 in time delay stroke, drive division 51b arrives " low level " state, the main contact of the first early dynamic auxiliary low-voltage circuit breaker QF1 is converted to closed.Contact A X due to the first early auxiliary contact 3 of dynamic auxiliary low-voltage circuit breaker QF1 be converted to closed action prior to first early the main contact of dynamic auxiliary low-voltage circuit breaker QF1 be converted to the delay time T that closed action time delay process experiences, so the time that early main contact of dynamic auxiliary low-voltage circuit breaker QF1 is converted to closed action prior to first of the second early dynamic auxiliary low-voltage circuit breaker QF2 is also delay time T.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. an early dynamic auxiliary low-voltage circuit breaker, comprises shell block (1), and is arranged on auxiliary contact (3), operating mechanism (4) and the main contact on shell block (1), it is characterized in that:
Described dynamic auxiliary low-voltage circuit breaker morning also comprises early dynamic device (5), early dynamic device (5) comprises the driving section (51a) that can contact with operating mechanism (4) and coordinate and contacts the drive division (51b) coordinated with auxiliary contact (3), drive main contact to be in the process of closure state by disjunction State Transferring at the feed motion of described operating mechanism (4), operating mechanism (4) drives simultaneously and early moves device (5) and be transformed into the second stable state by the first stable state;
Move process that device (5) is transformed into the second stable state by the first stable state described morning to comprise and move process the morning that early dynamic device (5) first orders about auxiliary contact (3) change over switch state, then early dynamic device (5) arrives the time delay process of the second stable state again, and in early dynamic process, operating mechanism (4) drives the drive division (51b) of early dynamic device (5) to act on auxiliary contact (3) by driving section (51a) and makes auxiliary contact (3) change over switch state.
2. morning according to claim 1 dynamic auxiliary low-voltage circuit breaker, it is characterized in that: the trip free action of described operating mechanism (4), pull work or separating brake action can make early dynamic device (5) return to the first stable state or be stabilized in the first stable state again, also make main contact be converted to disjunction state or be stabilized in disjunction state simultaneously.
3. morning according to claim 1 dynamic auxiliary low-voltage circuit breaker, it is characterized in that: move device (5) described morning and comprise support (51), spring (52), support (51) is arranged on the fixture of shell block (1) or operating mechanism (4) by revolute pair, support (51) is provided with driving section (51a) and drive division (51b), the elastic force of spring (52) can order about support (51) and rotates and arrive the first stable state, and operating mechanism (4) can order about support (51) and rotates and reach the second stable state.
4. morning according to claim 3 dynamic auxiliary low-voltage circuit breaker, it is characterized in that: the revolute pair moving device (5) described morning comprises rotation axis (53) and is arranged on the axis hole (51c) on support (51), rotation axis (53) is arranged on the fixture of shell block (1) or operating mechanism (4), and the axis hole (51c) on support (51) is sleeved on rotation axis (53); Described support (51) one end is provided with axis hole (51c), the other end is provided with the drive division (51b) that arrange corresponding to the auxiliary push-rod of auxiliary contact (3) (3a), and support (51) middle part is provided with the driving section (51a) that arrange corresponding to the actuating arm (41a) on the rocking arm of operating mechanism (4) (41) to side extension; Described spring (52) is torsion spring, and it is sleeved on rotation axis (53), and its one end connects with support (51), and the other end connects with shell block (1).
5. morning according to claim 1 dynamic auxiliary low-voltage circuit breaker, it is characterized in that: the drive division (51b) moving device (5) when early dynamic device (5) is in the first stable state morning contacts with auxiliary contact (3), the drive division (51b) early moving device (5) when early dynamic device (5) is in the second stable state is separated with auxiliary contact (3); Drive division (51b) and auxiliary contact (3) be move process by the process touching auxiliary contact (3) change over switch state the morning early moving device (5), are time delay process by auxiliary contact (3) change over switch state to the process of the second stable state.
6. morning according to claim 1 dynamic auxiliary low-voltage circuit breaker, it is characterized in that: when operating mechanism (4) is in "on" position, early the actuating arm (41a) of dynamic device (5) contacts with driving section (51a), operating mechanism (4) be in trip free, again detain or gate-dividing state time actuating arm (41a) be separated with driving section (51a).
7. morning according to claim 1 dynamic auxiliary low-voltage circuit breaker, it is characterized in that: described dynamic auxiliary low-voltage circuit breaker morning comprises multiple auxiliary contact, operating mechanism (4) is by early moving the conversion that device (5) drives the on off state of multiple auxiliary contact simultaneously.
8. morning according to claim 1 dynamic auxiliary low-voltage circuit breaker, it is characterized in that: also comprise the Alarm contactor (2) be arranged on shell block (1), described Alarm contactor (2) coordinates with the rocking arm (41) of operating mechanism (4); The contact A L performing trip free action alarm contact (2) at operating mechanism (4) is converted to disjunction state; The contact A L performing button or separating brake action alarm contact (2) again at operating mechanism (4) is converted to closure state; The contact A L performing feed motion alarm contact (2) at operating mechanism (4) remains on closure state.
9. an electrical interlocks system, is characterized in that:
Comprise as arbitrary in claim 1-8 as described in the first early dynamic auxiliary low-voltage circuit breaker (QF1) and the second dynamic auxiliary low-voltage circuit breaker morning (QF2); Shunt release (C) coupled in series of the contact A X and second dynamic auxiliary low-voltage circuit breaker morning (QF2) of the auxiliary contact (3) of the first described dynamic auxiliary low-voltage circuit breaker morning (QF1); Shunt release (C) coupled in series of the contact A X and first dynamic auxiliary low-voltage circuit breaker morning (QF1) of the auxiliary contact (3) of the second described dynamic auxiliary low-voltage circuit breaker morning (QF2).
10. an electrical interlocks system, is characterized in that:
Comprise early dynamic auxiliary low-voltage circuit breaker (QF2) the first dynamic auxiliary low-voltage circuit breaker morning (QF1) as claimed in claim 8 and second;
The described contact A L of Alarm contactor (2) of the first dynamic auxiliary low-voltage circuit breaker morning (QF1) and shunt release (C) coupled in series of the contact A X of auxiliary contact (3) and second dynamic auxiliary low-voltage circuit breaker morning (QF2);
The described contact A L of Alarm contactor (2) of the second dynamic auxiliary low-voltage circuit breaker morning (QF2) and shunt release (C) coupled in series of the contact A X of auxiliary contact (3) and first dynamic auxiliary low-voltage circuit breaker morning (QF1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510359325.3A CN104916505B (en) | 2015-06-25 | 2015-06-25 | Early dynamic auxiliary low-voltage circuit breaker and electrical interlocks system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510359325.3A CN104916505B (en) | 2015-06-25 | 2015-06-25 | Early dynamic auxiliary low-voltage circuit breaker and electrical interlocks system |
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| CN104916505A true CN104916505A (en) | 2015-09-16 |
| CN104916505B CN104916505B (en) | 2018-03-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106783425A (en) * | 2016-12-13 | 2017-05-31 | 滁州学院 | The tripping mechanism of selective miniature circuit breaker |
| CN109087823A (en) * | 2018-10-18 | 2018-12-25 | 广州白云电器设备股份有限公司 | The device and switchgear of antiground switch indication light Pre-handoff |
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| CN204792642U (en) * | 2015-06-25 | 2015-11-18 | 上海诺雅克电气有限公司 | Early move supplementary low -voltage circuit breaker and electrical interlocks system |
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| DE4317656A1 (en) * | 1992-06-25 | 1994-01-05 | Klinger & Born Gmbh | Switching relay with auxiliary contacts - has pushbutton actuators for on and off state with auxiliary contact operation preceding main relay operation. |
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| CN106783425B (en) * | 2016-12-13 | 2019-01-25 | 滁州学院 | The tripping mechanism of selective miniature circuit breaker |
| CN109087823A (en) * | 2018-10-18 | 2018-12-25 | 广州白云电器设备股份有限公司 | The device and switchgear of antiground switch indication light Pre-handoff |
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|---|---|
| CN104916505B (en) | 2018-03-02 |
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Application publication date: 20150916 Assignee: ZHEJIANG CHINT ELECTRICS Co.,Ltd. Assignor: SHANGHAI NOARK ELECTRIC Co.,Ltd. Contract record no.: X2021330000593 Denomination of invention: Early acting auxiliary low voltage circuit breaker and electrical interlocking system Granted publication date: 20180302 License type: Common License Record date: 20211025 |
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