CN104201016A - Circuit breaker with automatic reclosing function special for pre-paid electricity meter - Google Patents
Circuit breaker with automatic reclosing function special for pre-paid electricity meter Download PDFInfo
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- CN104201016A CN104201016A CN201410310103.8A CN201410310103A CN104201016A CN 104201016 A CN104201016 A CN 104201016A CN 201410310103 A CN201410310103 A CN 201410310103A CN 104201016 A CN104201016 A CN 104201016A
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Abstract
The invention discloses a circuit breaker with an automatic reclosing function special for a pre-paid electricity meter. The circuit breaker comprises an auxiliary circuit breaker which is spliced in parallel with each pole of main circuit breaker for controlling the on/off of a live line L and is used for controlling an N line, and handle connecting rods sleeve operating handles on the auxiliary and main circuit breakers and are fixedly connected and linked with each handle respectively. The auxiliary circuit breaker comprises a control circuit for controlling arrearage tripping and reclosing, a maintenance driving plate, a position switch, a single-phase motor, an auxiliary tripper, and a reclosing transmission device pivotally arranged on a plastic shell, wherein the control circuit comprises an X1 access end which is connected with the live line L on the load side of the main circuit breaker, an X2 access end connected with the N line on the input side of the auxiliary circuit breaker, and an X3 access end connected with the control voltage output end of the pre-paid electricity meter. The maintenance driving plate, the position switch and the single-phase motor are connected in series between X3 and X2 access ends, and the control circuit is used for controlling synchronous tripping or linked automatic superposition of each circuit breaker according to the power loss or electrification signal of the X3 access end.
Description
Technical field
The present invention relates to a kind of low pressure miniature circuit breaker, be specifically related to pre-paying kilowatt-hour meter definite purpose circuit breaker, particularly a kind of pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing.
Background technology
Now in the distribution box of electric network reconstruction, the universal pre-paying kilowatt-hour meter with remote meter-reading function using is a kind of special and circuit breaker that pre-paying kilowatt-hour meter is used in conjunction with, when subscriber arrearage, pre-paying kilowatt-hour meter is controlled this definite purpose circuit breaker dropout tripping operation, to cut off the power supply to user, realize user owe in electricity charge situation cannot power taking function.Current pre-paying kilowatt-hour meter definite purpose circuit breaker only has arrearage power down function, and after the continuous friendship of user is filled with prepayment electric expense, ammeter can not be controlled circuit breaker automatic reclosing, need artificial deallocation electronic box to carry out breaker switching-on operation power taking again, this circuit breaker of manual closing operation that needs is used and brings inconvenience to user, has caused very large trouble particularly to old age or handicapped user.Along with the intelligent grid development of management automatically, the power purchase of prepayment electric expense has all realized networking with supplementing with money, user is by communication network power purchase, Utilities Electric Co. supplements with money to electric supply meter by electric power networks, owing to can no longer needing rechargeable card from power purchase to supplementing with money, can not automatic reclosing power supply just bring new problem, particularly in network speed fast not enough present stage, from power purchase, to supplementing with money, need several hours, even tens hours, so the manual closing operation operation of user within this time period can come a howler, even often can run into the embarrassment of again and again supplementing failure with money that is difficult to tolerance.Use as the miniature circuit breaker of terminal appliance relates to huge numbers of families, but because its volume is little, and be subject to modularization criteria limit, and also to meet anti-electricity-theft requirement, so realize automatic reclosing, there is certain difficulty.
Pre-paying kilowatt-hour meter is controlled circuit breaker trip, is to have utilized shunted exciter tripping technology, that is to say, pre-paying kilowatt-hour meter definite purpose circuit breaker need comprise shunt release.In existing circuit breaker, shunt release be provided with two kinds of modes: a kind of shunted exciter tripping module of setting up in standard type circuit breaker, formation has the circuit breaker of shunted exciter tripping function, and it,, except having the various defencive functions such as short circuit dropout, also has shunted exciter tripping function; Another kind is, at standard type circuit breaker, independently auxiliary unit is set outward, also be referred to as external shunt release, it and one pole or multipole circuit breaker are installed together side by side, between shunt release and circuit breaker, with an interlock handle, be connected, with the interlock between the handle of the circuit breaker realizing the handle of shunt release and install side by side.Generally; shunt release comprises the operating mechanism the same with standard type circuit breaker and a pair of main contact; different is; with shunt release, replaced transient electromagnetic release; also added control circuit simultaneously; because it also can be used for controlling the break-make of N utmost point main circuit, so it also can be considered to a kind of, there is shunted exciter tripping function and do not there is the shunted exciter tripping type circuit breaker of short circuit dropout defencive function.L utmost point circuit breaker in the circuit breaker that standard type circuit breaker can be used referring to the disclosed a kind of pre payment watthour meter of the Chinese utility model patent that is ZL201120383483.X as the patent No., and N utmost point circuit breaker in the circuit breaker that shunted exciter tripping type circuit breaker can be used referring to the disclosed a kind of pre payment watthour meter of the Chinese utility model patent that is ZL201120383483.X as the patent No..Circuit breaker with automatic reclosing function is generally after residual current fault occurs at present, carries out automatic reclosing, after repeatedly overlapping, if residual current fault still exists the operation that no longer overlaps.That is to say, there is no at present the product for payment management application automatic reclosing technology, a kind of pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing that has standard type circuit breaker and shunted exciter tripping type circuit breaker function concurrently of market demand.
Summary of the invention
The object of the present invention is to provide a kind of pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing of new generation that has overcome prior art defect, after arrearage disconnects, user continues to pay dues the in the situation that of connecting power supply, can realize automatic reclosing, not only have arrearage tripping operation and automatic reclosing performance reliability high, and can meet the feature that the design and use of miniature circuit breaker require, and simple and reasonable for structure, compact, volume is little.
For solving the problems of the technologies described above and realize above-mentioned purpose, the technical solution used in the present invention is: the pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing, comprise at least one utmost point main circuit breaker 1 and with each utmost point main circuit breaker 1 assembled secondary circuit breaker 4 side by side, wherein said main circuit breaker 1 is controlled the on/off of the live wire L of place utmost point main circuit, described secondary circuit breaker 4 is controlled the on/off of the N line of main circuit, one handle link rod 3 is sleeved on the outside of the operating grip that on driving handle 2 that pivotable on secondary circuit breaker 4 installs and each utmost point main circuit breaker 1, pivotable is installed, and, described handle link rod 3 is fixedly connected with linkage with described driving handle 2 with each utmost point operating grip respectively.Described secondary circuit breaker 4 comprise mould shell 10, for control arrearage dropout and reclosing control circuit 5, safeguard driver plate 6, position switch 7, monophase machine M, secondary release 8 and be pivoted on the reclosing transmission device 90 of moulding on shell 10, described control circuit 5 comprises X1 incoming end, X2 incoming end and X3 incoming end, wherein X1 incoming end connects with the live wire L of the load-side of main circuit breaker 1, X2 incoming end connects with the N line of the input side of secondary circuit breaker 4, and X3 incoming end connects with the control voltage output end 30 of pre-paying kilowatt-hour meter.Described safeguard driver plate 6, position switch 7 and monophase machine M are connected in series between the X3 incoming end and X2 incoming end of control circuit 5, described control circuit 5 is carried out synchronous dropout operation according to secondary circuit breaker 4 described in the dead electricity signal controlling of its X3 incoming end and main circuit breaker 1, or controls described secondary circuit breaker 4 and each utmost point main circuit breaker 1 execution interlock auto-reclosing operation according to the signal of telecommunication that obtains of its X3 incoming end.
The improvement of the technical program is: described driving handle 2 is provided with passive protruding 22 of combined floodgate use, described reclosing transmission device 90 is provided with the active projection 91 with passive protruding 22 suitable work, described active projection 91 coordinates with passive protruding 22 such transmissions, make the rotating counterclockwise of reclosing transmission device 90 that monophase machine M drives drive initiatively projection 91 to rotate and drive passive protruding 22 to rotate, so that described driving handle 2 turns to closing position from open position.
The further optimization of the technical program is: described position switch 7 is normally closed limit switch, it is only just converted to disjunction state when described passive protruding 22 the touching excitation being subject on the driving handle 2 at closing position of secondary circuit breaker 4, thereby controls monophase machine M stall.Described reclosing transmission device 90 also comprises back-moving spring.
The another kind of the technical program improves and is: described control circuit 5 comprises automatic reclosing drive circuit 51 and arrearage power-off drive circuit 52, described arrearage power-off drive circuit 52 is subject to the dead electricity signal controlling of X3 incoming end, carry out described synchronous dropout power operation, described automatic reclosing drive circuit 51 is controlled by the signal of telecommunication that obtains of X3 incoming end, carries out described interlock auto-reclosing operation.
The further optimization of technique scheme is: the automatic reclosing drive circuit 51 of described control circuit 5 comprises capacitor C 101, the main winding of described monophase machine M comprises the first connector lug and the second connector lug, its auxiliary winding comprises the 3rd connector lug, described capacitor C 101 is connected in parallel between the first connector lug and the 3rd connector lug of monophase machine M, described safeguard driver plate 6 and position switch 7 are connected in series between X3 incoming end and the first connector lug of monophase machine M, and the second connector lug of monophase machine M is connected with X2 incoming end.
Further optimization again of technique scheme is: the arrearage power-off drive circuit 52 of described control circuit 5 comprises tripping coil, C utmost point rectifier diode (V1, V2), B utmost point rectifier diode (V3, V4), voltage stabilizing didoe V5, thyristor V6, triode V7, B limit leakage resistance (R1, R2), C limit leakage resistance (R3, R4), resistance R 5, resistance R 6, resistance R 7, capacitor C 1 and delay capacitor C2, wherein said B limit leakage resistance (R1, R2) and B utmost point rectifier diode (V3, V4) be connected in series between described X3 incoming end and the B utmost point of triode V7 tripping coil, C utmost point rectifier diode (V1, V2), C limit leakage resistance (R3, R4) be connected in series in successively between X1 incoming end and the C utmost point of triode V7, the negative pole of voltage stabilizing didoe V5 is connected with the C utmost point of triode V7, and the positive pole of voltage stabilizing didoe V5 is connected with the b utmost point of thyristor V6, the c utmost point of thyristor V6 and C utmost point rectifier diode (V1, V2) negative pole connects, one end of resistance R 6 is connected with the B utmost point of triode V7, the positive pole of one end of resistance R 7 and delay capacitor C2 is connected in parallel in the C utmost point of triode V7, and one end of one end of resistance R 5 and capacitor C 1 is connected in parallel in the b utmost point of thyristor V6, the other end of resistance R 6, the E utmost point of triode V7, the other end of R7, the other end of delay capacitor C2, the other end of resistance R 5, the e utmost point of the other end of capacitor C 1 and thyristor V6 is connected in parallel in X2 incoming end.
Another improvement of the technical program is: described control circuit 5 comprises tripping coil, capacitor C 101, C utmost point rectifier diode (V1, V2), B utmost point rectifier diode (V3, V4), voltage stabilizing didoe V5, thyristor V6, triode V7, B limit leakage resistance (R1, R2), C limit leakage resistance (R3, R4), resistance R 5, resistance R 6, resistance R 7, capacitor C 1 and delay capacitor C2, the main winding of described monophase machine M comprises the first connector lug and the second connector lug, its auxiliary winding comprises the 3rd connector lug, described capacitor C 101 is connected in parallel between the first connector lug and the 3rd connector lug of monophase machine M, described safeguard driver plate 6 and position switch 7 are connected in series between X3 incoming end and the first connector lug of monophase machine M, and the second connector lug of monophase machine M is connected with X2 incoming end, described B limit leakage resistance (R1, R2) and B utmost point rectifier diode (V3, V4) be connected in series between X3 incoming end and the B utmost point of triode V7, tripping coil, C utmost point rectifier diode (V1, V2), C limit leakage resistance (R3, R4) be connected in series in successively between X1 incoming end and the C utmost point of triode V7, the negative pole of voltage stabilizing didoe V5 is connected with the C utmost point of triode V7, the positive pole of voltage stabilizing didoe V5 is connected with the b utmost point of thyristor V6, the c utmost point of thyristor V6 and C utmost point rectifier diode (V1, V2) negative pole connects, one end of resistance R 6 is connected with the B utmost point of triode V7, the positive pole of one end of resistance R 7 and delay capacitor C2 is connected in parallel in the C utmost point of triode V7, one end of one end of resistance R 5 and capacitor C 1 is connected in parallel in the b utmost point of thyristor V6, the other end of resistance R 6, the E utmost point of triode V7, the other end of R7, the other end of delay capacitor C2, the other end of resistance R 5, the e utmost point of the other end of capacitor C 1 and thyristor V6 is connected in parallel in X2 incoming end.
The further optimization of aforementioned techniques scheme is: described thyristor V6 is bidirectional triode thyristor.Described control circuit 5 also comprises piezo-resistance RV1, the anodal parallel connection of one end of its one end and tripping coil, C utmost point rectifier diode (V1, V2), and the other end of this piezo-resistance RV1 is connected with N line.
Other improvement of the technical program is: in described secondary circuit breaker 4, be provided with for controlling the contact switch 11 of the on/off of main circuit N line, it,, with the arrearage power-off tripping operation action disjunction of secondary circuit breaker 4, makes N line open circuit.
Another improvement of the technical program is: the power supply of described monophase machine M is provided by the control voltage output end 30 of pre-paying kilowatt-hour meter, and described monophase machine M is synchronous motor.
Owing to having adopted above-mentioned various technical scheme, the pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing of the present invention increases a kind of mechanism and control circuit of automatic reclosing in former shunted exciter tripping type circuit breaker, the structure that adopts main circuit breaker 1 and secondary circuit breaker 4 to be arranged side by side, and in the interior setting of secondary circuit breaker 4, there is the control circuit 5 of controlling arrearage tripping operation and automatic reclosing function, safeguard driver plate 6, position switch 7, monophase machine M, secondary release 8 and reclosing transmission device 90, make the function of the shunted exciter tripping type circuit breaker of its standard type circuit breaker that has ZL201120383483.X concurrently and ZL201120383483.X, not only there is arrearage power down function, and after the continuous friendship of user is filled with prepayment electric expense, ammeter can be controlled circuit breaker automatic reclosing, without artificial deallocation electronic box, carry out breaker switching-on operation power taking again, to user, use and bring very big facility, especially can avoid the user cannot the tantalizing embarrassment of electricity consumption because again and again not filling that value meets with.
Accompanying drawing explanation
Fig. 1 is the three-dimensional schematic block diagram of contour structures with the pre-paying kilowatt-hour meter definite purpose circuit breaker of automatic reclosing of the present invention.
Fig. 2 is the overall structure schematic block diagram with the pre-paying kilowatt-hour meter definite purpose circuit breaker of automatic reclosing of the present invention.
Fig. 3-5 are respectively the theory structure schematic diagrames of secondary circuit breaker 4 automatic reclosing associated mechanisms in the embodiment shown in Fig. 1, wherein:
The stable state that secondary circuit breaker 4 in Fig. 3 is threaded off and tripped in arrearage power-off,
Secondary circuit breaker 4 in Fig. 4,5 is the stable state in automatic reclosing all, the initial difference of the active projection 91 in Fig. 4, Fig. 5.
Fig. 6 is the electrical block diagram with the pre-paying kilowatt-hour meter definite purpose circuit breaker of automatic reclosing of the present invention.
Embodiment
The embodiment providing below in conjunction with Fig. 1 to Fig. 6, further illustrate the embodiment with the pre-paying kilowatt-hour meter definite purpose circuit breaker of automatic reclosing of the present invention, the pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing of the present invention is not limited to the description of following examples.
The pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing of the present invention shown in Fig. 1 be take one pole as example, comprise one pole main circuit breaker 1, with its assembled secondary circuit breaker 4 and handle link rod 3 side by side, handle link rod 3 is fixedly connected with linkage with the driving handle 2 being pivoted on secondary circuit breaker 4 with the operating grip being pivoted on main circuit breaker 1 respectively.Main circuit breaker 1 can be standard type miniature circuit breaker; it can have multiple known defencive function and structure, and for controlling the on/off of the live wire L of main circuit, product structure form can be one pole or multipole; accordingly, main circuit breaker 1 and secondary circuit breaker 4 are assembled into the two poles of the earth or the use of four utmost points.Under the state of main circuit breaker 1 in normal separating brake or fault trip, the live wire L of main circuit is broken, cuts off to customer power supply; When main circuit breaker 1 is under "on" position, the live wire L of main circuit is switched on, to customer power supply.The combined floodgate of main circuit breaker 1 and separating brake are all that the operating grip being pivoted in the known manner on it by operation completes.Fig. 2 is a kind of preferred embodiment being connected with main circuit of pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing of the present invention.Referring to Fig. 2, described main circuit breaker 1 is controlled the on/off of the live wire L of main circuit, secondary circuit breaker 4 is controlled the on/off of the N line of main circuit, and the X1 incoming end of control circuit 5 connects with the live wire L of the load-side of main circuit breaker 1, and the X2 incoming end of control circuit 5 connects with the N line of the input side of secondary circuit breaker 4.Obviously, according to this syndeton, can further improve fail safe, reliability and function and the performance such as anti-electricity-theft of main circuit breaker 1 and secondary circuit breaker 4.That summarizes says, the pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing of the present invention comprise at least one utmost point main circuit breaker 1 and with each utmost point main circuit breaker 1 assembled secondary circuit breaker 4 side by side, one handle link rod 3 is sleeved on the outside of the operating grip that on driving handle 2 that pivotable on secondary circuit breaker 4 installs and each utmost point main circuit breaker 1, pivotable is installed, and described handle link rod 3 is fixedly connected with linkage with described driving handle 2 with each utmost point operating grip respectively.Described secondary circuit breaker 4 comprise mould shell 10, for control arrearage dropout and reclosing control circuit 5, safeguard driver plate 6, position switch 7, monophase machine M, secondary release 8 and be pivoted on the reclosing transmission device 90 of moulding on shell 10, described control circuit 5 comprises X1 incoming end, X2 incoming end and X3 incoming end, wherein X1 incoming end connects with the live wire L of the load-side of main circuit breaker 1, X2 incoming end connects with the N line of the input side of secondary circuit breaker 4, and X3 incoming end connects with the control voltage output end 30 of pre-paying kilowatt-hour meter.Described safeguard driver plate 6, position switch 7 and monophase machine M are connected in series between the X3 incoming end and X2 incoming end of control circuit 5.During dropout, described control circuit 5 is carried out the synchronous operation of threading off according to secondary circuit breaker 4 described in the dead electricity signal controlling of its X3 incoming end and main circuit breaker 1; During combined floodgate, according to its X3 incoming end the signal of telecommunication is controlled described secondary circuit breaker 4 and each utmost point main circuit breaker 1 is carried out interlock auto-reclosing operation, by handle 2 and the multipole handle link rod 3 that wraps up on it, drive multipole circuit breakers to close a floodgate.
Circuit and the device of realizing arrearage dropout and the coincidence function that continues to pay dues can be packaged in secondary circuit breaker 4, secondary circuit breaker 4 is arranged in the mounting guide rail (not shown) in ammeter box side by side with main circuit breaker 1, or adopt a kind of known syndeton to be linked together side by side, and handle link rod 3 is fixedly connected with linkage with driving handle 2, operating grip respectively, by adopt handle link rod 3 respectively and driving handle 2, operating grip between known fixed connection structure, realize handle link rod 3, driving handle 2, operating grip three's interlock.That is to say, the combined floodgate of the operating grip of main circuit breaker 1, separating brake or tripping operation action can drive combined floodgate, separating brake or the tripping operation action of the driving handle 2 of secondary circuit breaker 4, and vice versa.Secondary circuit breaker 4 is exclusively used in realizes arrearage power-off tripping operation and automatic reclosing, that is: secondary circuit breaker 4 sends arrearage power-off tripping operation action under the arrearage signal controlling of pre-paying kilowatt-hour meter, this action interlock with operating grip by driving handle 2, orders about the synchronous separating brake of main circuit breaker 1; At secondary circuit breaker 4 under arrearage power-off tripped condition, if pre-paying kilowatt-hour meter is inputted not arrearage (recovering normal power supply) voltage signal to secondary circuit breaker 4, secondary circuit breaker 4 places can send reclosing action automatically, this automatic reclosing action interlock with operating grip by driving handle 2, orders about main circuit breaker 1 and closes a floodgate.As can be seen here, the major function of secondary circuit breaker 4 is to apply arrearage power-off tripping operation action or automatic reclosing action to its driving handle 2, but, in order to take into account other purposes (as improved anti-electricity-theft performance), a kind of preferred scheme is as shown in Figure 2, in secondary circuit breaker 4, be provided with the contact switch 11 with disjunction main circuit function, but it is not used in the on/off of controlling live wire L, but for controlling the on/off of N line, even if handle link rod 3 is destroyed, driving handle 2 can not link with operating grip, the arrearage power-off of secondary circuit breaker 4 tripping operation action must drive its contact switch 11 disjunctions, make the N line open circuit of controlled main circuit, therefore user is open circuit and cannot electricity consumption, can play certain power-steeling preventing effect thus.
Fig. 3-5 are respectively the theory structure schematic diagrames of secondary circuit breaker 4 automatic reclosing associated mechanisms in the embodiment shown in Fig. 1, referring to Fig. 3 to Fig. 6, described secondary circuit breaker 4 comprise mould shell 10, for control arrearage tripping operation and automatic reclosing control circuit 5, safeguard driver plate 6, position switch 7, monophase machine M, secondary release 8 and be pivoted on the reclosing transmission device 90 of moulding on shell 10.Secondary release 8 can adopt general-purpose device, while having exciting current in tripping coil (seeing Fig. 6), the induced electricity magnetic energy of coil drives moving iron core to move, this moves the operating mechanism (not shown) generation dropout action that can trigger secondary circuit breaker 4, this dropout action is in contact switch 11 disjunctions that make secondary circuit breaker 4, also, by the operating grip of driving handle 2, handle link rod 3 and main circuit breaker 1, cause the synchronous separating brake of main circuit breaker 1.Reclosing transmission device 90 is pivoted in the known manner to be moulded on shell 10, it only has a rotational freedom, under the driving of monophase machine M, reclosing transmission device 90 can rotate around its rotating shaft (in figure for illustrating), and this rotational drives the driving handle 2 of secondary circuit breaker 4 to rotate.Safeguard that driver plate 6 is for diverter switch, for switching and select between " ON " at automatic reclosing and " OFF " two kinds of operational modes.When " ON " pattern of selection, secondary circuit breaker 4 has automatic reclosing function; When " OFF " pattern of selection, the automatic reclosing function of secondary circuit breaker 4 is cancelled.Position switch 7 is a kind of normally closed limit switches, for the position of perception reclosing transmission device 90.Described driving handle 2 is provided with passive protruding 22 of combined floodgate use, reclosing transmission device 90 is provided with initiatively projection 91, the stable state that secondary circuit breaker 4 in Fig. 3 is threaded off and tripped in arrearage power-off, reclosing transmission device 90 is in the preoperative initial position of automatic reclosing, initiatively passive protruding 22 of the combined floodgate use of projection 91 and driving handle 2 contacts; Secondary circuit breaker 4 in Fig. 4,5 is the stable state in automatic reclosing all, active projection 91 in Fig. 4 is with passive protruding 22 separated, reclosing transmission device 90 in Fig. 5 has resetting device, and initiatively projection 91 has been got back to the preoperative initial position of automatic reclosing.Above-mentioned normally closed limit switch 7 coordinates with passive protruding 22 touchings of the combined floodgate use of driving handle 2 under secondary circuit breaker 4 "on" positions, and causes position switch 7 to be converted to disjunction by this touching cooperation.Touching described here coordinates and refers under secondary circuit breaker 4 "on" positions, and passive protruding 22 of driving handle 2 contacts and brush up against position switch 7 with position switch 7, makes position switch 7 be converted to off-state by normally off; At secondary circuit breaker 4, under tripping operation or gate-dividing state, passive protruding 22 of driving handle 2 does not contact with position switch 7, makes position switch 7 remain on normally off, and therefore, the present invention is just called passive protruding 22 of combined floodgate use by passive protruding 22.Driving handle 2 includes back-moving spring, and back-moving spring is also contained in handle link gear bottom.By link mechanism effect, when driving handle is after certain angle (being commonly called as dead point), link mechanism, by producing a downward power, makes handle remain on stable state.
Referring to Fig. 6, the X3 incoming end that control circuit 5 of the present invention is provided with the X1 incoming end connecting with the live wire L of main circuit, the X2 incoming end connecting with the N line of main circuit and connects with the control voltage output end 30 of pre-paying kilowatt-hour meter, safeguard that driver plate 6, position switch 7 and monophase machine M coupled in series are between X3 incoming end and X2 incoming end, that is: X3 incoming end, safeguard driver plate 6, position switch 7, monophase machine M, X2 incoming end coupled in series successively.Aforesaid active projection 91 coordinates with passive protruding 22 such transmissions, make the rotating counterclockwise of reclosing transmission device 90 that monophase machine M drives drive initiatively projection 91 to rotate, this rotation drives passive protruding 22 to rotate then, and make driving handle 2 turn to closing position from open position, that is: rotating counterclockwise of the reclosing transmission device 90 that monophase machine M drives can drive initiatively projection 91 to rotate, this rotating drive passive protruding 22 is rotated, thereby order about driving handle 2 and turn to closing position from open position, carry out automatic reclosing operation.Except this transmission coordinates, initiatively can there be various ways coordinating between projection 91 and passive protruding 22, but no matter which kind of mode, rotating counterclockwise of the reclosing transmission device 90 driving at monophase machine M drives initiatively protruding 91 rotating drive passive protruding 22 rotate and make driving handle 2 from open position, turn to the process of closing position, initiatively projection 91 is identical with passive protruding 22 transmission matching relationship, that is to say, when initiatively projection 91 drives passive protruding 22 to make driving handle 2 arrival stablize closing position, passive protruding 22 while touch position switches 7, make it by normally off, be converted to off-state, the disconnection of position switch 7 makes monophase machine M dead electricity and stops operating, it is identical that the stopping of monophase machine M makes projection 91 initiatively rest on the control procedure of the states of passive protruding 22 contacts.Difference be after motor stalling until in the process that once overlaps in which position, initiatively the transmission matching relationship between projection 91 and passive protruding 22 for example can adopt following three kinds of different modes: the first, at secondary circuit breaker 4, stablize under "on" position, handle 2 with position switch 7 touch position, initiatively projection 91 stay on passive protruding 22 states that contact, at secondary circuit breaker 4, be converted in separating brake or tripping operation process, passive protruding 22 drive initiatively projection 91 open positions of getting back to as shown in Figure 3.When monophase machine M obtain electric after, initiatively projection 91 is to counterclockwise rotating and driving at once passive protruding 22 to carry out automatic reclosings operation, until secondary circuit breaker 4 is in stablizing "on" position.The second, at secondary circuit breaker 4, enter and stablize after "on" position, initiatively projection 91 rests on and passive protruding 22 separated states (state as shown in Figure 4), at secondary circuit breaker 4, is converted in separating brake or tripping operation process, and initiatively projection 91 continues to be retained in the position shown in Fig. 4.When monophase machine M obtain electric after, initiatively projection 91, to counterclockwise rotating, first contact with passive protruding 22 in the position shown in Fig. 3, then drives passive protruding 22 execution automatic reclosings to operate, until the stable "on" position shown in Fig. 4.The third, described reclosing transmission device 90 also comprises back-moving spring (not shown), at secondary circuit breaker 4, stablize under "on" position, monophase machine M dead electricity, back-moving spring can order about initiatively projection 91 initial positions (as shown in Figure 5) of getting back to before its auto-reclosing operation.At secondary circuit breaker 4, be converted to after separating brake or tripping operation, passive protruding 22 arrive the position shown in Fig. 3 and contact with active projection 91, when monophase machine M obtain electric after, initiatively projection 91 is to counterclockwise rotating and driving at once passive protruding 22 to carry out automatic reclosing operation, until secondary circuit breaker 4 is in stablizing "on" position, as monophase machine M dead electricity, back-moving spring orders about initiatively projection 91 and gets back to the initial position shown in Fig. 5.
A kind of execution mode of described control circuit 5 is to comprise automatic reclosing drive circuit 51 and arrearage power-off drive circuit 52 (will describe in detail) below, automatic reclosing drive circuit 51 is controlled by the signal of telecommunication that obtains of X3 incoming end, carry out the operation of interlock automatic reclosing, arrearage power-off drive circuit 52 is subject to the dead electricity signal controlling of X3 incoming end, carries out synchronous dropout power operation.Specifically, the action of arrearage dropout power-off of secondary circuit breaker 4 and the action of automatic reclosing are all that the level of exporting to the voltage signal of X3 incoming end by the control voltage output end 30 of pre-paying kilowatt-hour meter is controlled, that is: when pre-paying kilowatt-hour meter applies voltage (obtaining the signal of telecommunication) to X3 incoming end, level is high, is somebody's turn to do to such an extent that the signal of telecommunication is controlled the 51 execution automatic reclosing operations of automatic reclosing drive circuit; When pre-paying kilowatt-hour meter removes voltage (being dead electricity signal) from X3 incoming end, level is zero or very low, and this dead electricity signal controlling arrearage power-off drive circuit 52 is carried out dropout power operation.The advantage of this control mode is effectively to prevent from getting rid of table stealing, specifically, when electrical connection between artificial cut-out pre-paying kilowatt-hour meter and circuit breaker, circuit breaker can automatic trip to cut off power supply.The power supply of described monophase machine M is preferably provided by the control voltage output end 30 of pre-paying kilowatt-hour meter, be pre-paying kilowatt-hour meter export to X3 incoming end voltage signal directly as the power supply of monophase machine M, can simplify the circuit structure of automatic reclosing drive circuit 51 thus, can meet the requirement of the miniaturization of miniature circuit breaker.Certainly, do not get rid of and adopt other power supply that increases power circuit mode to power to monophase machine M.Described monophase machine M preferably adopts synchronous motor, because it can meet the miniaturization of miniature circuit breaker and the requirement of closing operation characteristic.
The particular circuit configurations of the control circuit 5 shown in Fig. 2 as shown in Figure 6, shown in Fig. 6 is the another kind of execution mode of control circuit 5, and this circuit comprises capacitor C 101, C utmost point rectifier diode (V1, V2), B utmost point rectifier diode (V3, V4), voltage stabilizing didoe V5, thyristor V6, triode V7, B limit leakage resistance (R1, R2), C limit leakage resistance (R3, R4), resistance R 5, resistance R 6, resistance R 7, capacitor C 1, delay capacitor C2 and tripping coil.Described monophase machine M comprises the 3rd connector lug of the first connector lug of its main winding, the second connector lug of main winding and auxiliary winding, between X3 incoming end and the first connector lug, be connected in series described driver plate 6 and the position switch 7 safeguarded, the second connector lug is connected with X2 incoming end, and capacitor C 101 is connected in parallel between the first connector lug and the 3rd wiring.Described B limit leakage resistance (R1, R2) and B utmost point rectifier diode (V3, V4) be connected in series between X3 incoming end and the B utmost point of triode V7, tripping coil, C utmost point rectifier diode (V1, V2), C limit leakage resistance (R3, R4) be connected in series in successively between X1 incoming end and the C utmost point of triode V7, the negative pole of voltage stabilizing didoe V5 is connected with the C utmost point of triode V7, the positive pole of voltage stabilizing didoe V5 is connected with the b utmost point of thyristor V6, the c utmost point of thyristor V6 and C utmost point rectifier diode (V1, V2) negative pole connects, one end of resistance R 6 is connected with the B utmost point of triode V7, the positive pole of one end of resistance R 7 and delay capacitor C2 is connected in parallel in the C utmost point of triode V7, one end of one end of resistance R 5 and capacitor C 1 is connected in parallel in the b utmost point of thyristor V6, the other end of resistance R 6, the E utmost point of triode V7, the other end of R7, the other end of delay capacitor C2, the other end of resistance R 5, the e utmost point of the other end of capacitor C 1 and thyristor V6 is connected in parallel in X2 incoming end.The thyristor V6 that a kind of further preferred scheme is control circuit 5 preferably adopts bidirectional triode thyristor, control circuit 5 also comprises piezo-resistance RV1, the anodal parallel connection of one end of its one end and tripping coil, C utmost point rectifier diode (V1, V2), the other end of piezo-resistance RV1 connects with N line, in order to burning voltage.
Further analysis in conjunction with Fig. 2 and Fig. 6 is not difficult to draw, included automatic reclosing drive circuit 51 and arrearage power-off drive circuit 52 in the control circuit 5 shown in Fig. 2, can structural division, automatic reclosing drive circuit 51 and arrearage power-off drive circuit 52 are not got rid of respectively other form in addition of the structure shown in Fig. 6 that adopts, therefore, two kinds of circuit structure modes also can be used as the optimal way of control circuit 5 below: first kind of way is that automatic reclosing drive circuit 51 adopts the structure shown in Fig. 6, and arrearage power-off drive circuit 52 adopts other form in addition of the structure shown in Fig. 6 to realize, the second is that arrearage power-off drive circuit 52 adopts the structure shown in Fig. 6, and automatic reclosing drive circuit 51 adopts other form in addition of the structure shown in Fig. 6 to realize.Under the first execution mode, the automatic reclosing drive circuit 51 that the circuit of the control circuit 5 shown in Fig. 2 comprises, its particular circuit configurations as shown in Figure 6, it comprises capacitor C 101, safeguard that driver plate 6 and position switch 7 are connected in series between X3 incoming end and the first connector lug, the second connector lug of monophase machine M main winding is connected with X2 incoming end, and capacitor C 101 is connected in parallel between the first connector lug of monophase machine M main winding and the 3rd wiring of auxiliary winding.Obviously, such circuit structure can significantly improve the startability of monophase machine M, and to meet the torque factor requirement of automatic reclosing, described monophase machine M preferably adopts synchronous motor.Certainly, under this first kind of way, the circuit structure except automatic reclosing drive circuit 51 can be different from the structure shown in Fig. 6, i.e. arrearage power-off drive circuit 52 can be substituted by other circuit identical with its function.Under the second execution mode, as shown in Figure 6, it comprises C utmost point rectifier diode (V1 to the particular circuit configurations of the arrearage power-off drive circuit 52 of the control circuit 5 shown in Fig. 2, V2), B utmost point rectifier diode (V3, V4), voltage stabilizing didoe V5, thyristor V6, triode V7, B limit leakage resistance (R1, R2), C limit leakage resistance (R3, R4), resistance R 5, resistance R 6, resistance R 7, capacitor C 1, delay capacitor C2 and tripping coil, B limit leakage resistance (R1, R2) and B utmost point rectifier diode (V3, V4) be connected in series between X3 incoming end and the B utmost point of triode V7 tripping coil, C utmost point rectifier diode (V1, V2), C limit leakage resistance (R3, R4) be connected in series in successively between X1 incoming end and the C utmost point of triode V7, the negative pole of voltage stabilizing didoe V5 is connected with the C utmost point of triode V7, and the positive pole of voltage stabilizing didoe V5 is connected with the b utmost point of thyristor V6, the c utmost point of thyristor V6 and C utmost point rectifier diode (V1, V2) negative pole connects, one end of resistance R 6 is connected with the B utmost point of triode V7, the positive pole of one end of resistance R 7 and delay capacitor C2 is connected in parallel in the C utmost point of triode V7, and one end of one end of resistance R 5 and capacitor C 1 is connected in parallel in the b utmost point of thyristor V6, the other end of resistance R 6, the E utmost point of triode V7, the other end of R7, the other end of delay capacitor C2, the other end of resistance R 5, the e utmost point of the other end of capacitor C 1 and thyristor V6 is connected in parallel in X2 incoming end, and described arrearage power-off drive circuit 52 also comprises piezo-resistance RV1, one end of its one end and tripping coil, C utmost point rectifier diode (V1, V2) anodal parallel connection, the other end of piezo-resistance RV1 connects with N line, and described thyristor V6 preferably adopts bidirectional triode thyristor.Certainly, under this second way, the circuit structure except arrearage power-off drive circuit 52 can be different from the structure shown in Fig. 6, because automatic reclosing drive circuit 51 can be substituted by other circuit identical with its function.
Claims (10)
1. a pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing, comprise at least one utmost point main circuit breaker (1) and with each utmost point main circuit breaker (1) assembled secondary circuit breaker (4) side by side, it is characterized in that:
Described main circuit breaker (1) is controlled the on/off of the live wire L of place utmost point main circuit, described secondary circuit breaker (4) is controlled the on/off of the N line of main circuit, one handle link rod (3) is sleeved on the outside of driving handle (2) and the operating grip that the upper pivotable of each utmost point main circuit breaker (1) is installed of the upper pivotable installation of secondary circuit breaker (4), and described handle link rod (3) is fixedly connected with linkage with described driving handle (2) with each utmost point operating grip respectively;
Described secondary circuit breaker (4) comprises moulds shell (10), for controlling the control circuit (5) of arrearage dropout and reclosing, safeguard driver plate (6), position switch (7), monophase machine M, secondary release (8) and be pivoted on the reclosing transmission device (8) of moulding on shell (10), described control circuit (5) comprises X1 incoming end, X2 incoming end and X3 incoming end, wherein X1 incoming end connects with the live wire L of the load-side of main circuit breaker (1), X2 incoming end connects with the N line of the input side of secondary circuit breaker (4), X3 incoming end connects with the control voltage output end (30) of pre-paying kilowatt-hour meter,
Described safeguard driver plate (6), position switch (7) and monophase machine M are connected in series between the X3 incoming end and X2 incoming end of control circuit (5), described control circuit (5) carries out according to secondary circuit breaker (4) described in the dead electricity signal controlling of its X3 incoming end and main circuit breaker (1) operation of synchronously threading off, or controls described secondary circuit breaker (4) and each utmost point main circuit breaker (1) execution interlock auto-reclosing operation according to the signal of telecommunication that obtains of its X3 incoming end.
2. the pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing according to claim 1, it is characterized in that: described driving handle (2) is provided with the passive projection (22) of combined floodgate use, described reclosing transmission device (8) is provided with the active projection (91) with the suitable work of passive projection (22), described active projection (91) coordinates with the such transmission of passive projection (22), make the rotating counterclockwise of reclosing transmission device (8) that monophase machine M drives drive initiatively projection (91) to rotate and drive passive projection (22) to rotate, so that described driving handle (2) turns to closing position from open position.
3. the pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing according to claim 1 and 2, it is characterized in that: described position switch (7) is normally closed limit switch, it is only just converted to disjunction state when the touching excitation that is subject to the described passive projection (22) on the driving handle at closing position (2) of secondary circuit breaker (4), thereby controls monophase machine M stall; Described reclosing transmission device (8) also comprises back-moving spring.
4. the pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing according to claim 1, it is characterized in that: described control circuit (5) comprises automatic reclosing drive circuit (51) and arrearage power-off drive circuit (52), described arrearage power-off drive circuit (52) is subject to the dead electricity signal controlling of X3 incoming end, carry out described synchronous dropout power operation, described automatic reclosing drive circuit (51) is controlled by the signal of telecommunication that obtains of X3 incoming end, carries out described interlock auto-reclosing operation.
5. the pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing according to claim 4, it is characterized in that: the automatic reclosing drive circuit (51) of described control circuit (5) comprises capacitor C 101, the main winding of described monophase machine M comprises the first connector lug and the second connector lug, its auxiliary winding comprises the 3rd connector lug, described capacitor C 101 is connected in parallel between the first connector lug and the 3rd connector lug of monophase machine M, described safeguard driver plate (6) and position switch (7) are connected in series between X3 incoming end and the first connector lug of monophase machine M, the second connector lug of monophase machine M is connected with X2 incoming end.
6. the pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing according to claim 4, is characterized in that: the arrearage power-off drive circuit (52) of described control circuit (5) comprises tripping coil, C utmost point rectifier diode (V1, V2), B utmost point rectifier diode (V3, V4), voltage stabilizing didoe V5, thyristor V6, triode V7, B limit leakage resistance (R1, R2), C limit leakage resistance (R3, R4), resistance R 5, resistance R 6, resistance R 7, capacitor C 1 and delay capacitor C2, wherein said B limit leakage resistance (R1, R2) and B utmost point rectifier diode (V3, V4) be connected in series between described X3 incoming end and the B utmost point of triode V7 tripping coil, C utmost point rectifier diode (V1, V2), C limit leakage resistance (R3, R4) be connected in series in successively between X1 incoming end and the C utmost point of triode V7, the negative pole of voltage stabilizing didoe V5 is connected with the C utmost point of triode V7, and the positive pole of voltage stabilizing didoe V5 is connected with the b utmost point of thyristor V6, the c utmost point of thyristor V6 and C utmost point rectifier diode (V1, V2) negative pole connects, one end of resistance R 6 is connected with the B utmost point of triode V7, the positive pole of one end of resistance R 7 and delay capacitor C2 is connected in parallel in the C utmost point of triode V7, and one end of one end of resistance R 5 and capacitor C 1 is connected in parallel in the b utmost point of thyristor V6, the other end of resistance R 6, the E utmost point of triode V7, the other end of R7, the other end of delay capacitor C2, the other end of resistance R 5, the e utmost point of the other end of capacitor C 1 and thyristor V6 is connected in parallel in X2 incoming end.
7. the pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing according to claim 1, is characterized in that: described control circuit (5) comprises tripping coil, capacitor C 101, C utmost point rectifier diode (V1, V2), B utmost point rectifier diode (V3, V4), voltage stabilizing didoe V5, thyristor V6, triode V7, B limit leakage resistance (R1, R2), C limit leakage resistance (R3, R4), resistance R 5, resistance R 6, resistance R 7, capacitor C 1 and delay capacitor C2, the main winding of described monophase machine M comprises the first connector lug and the second connector lug, its auxiliary winding comprises the 3rd connector lug, described capacitor C 101 is connected in parallel between the first connector lug and the 3rd connector lug of monophase machine M, described safeguard driver plate (6) and position switch (7) are connected in series between X3 incoming end and the first connector lug of monophase machine M, and the second connector lug of monophase machine M is connected with X2 incoming end, described B limit leakage resistance (R1, R2) and B utmost point rectifier diode (V3, V4) be connected in series between X3 incoming end and the B utmost point of triode V7, tripping coil, C utmost point rectifier diode (V1, V2), C limit leakage resistance (R3, R4) be connected in series in successively between X1 incoming end and the C utmost point of triode V7, the negative pole of voltage stabilizing didoe V5 is connected with the C utmost point of triode V7, the positive pole of voltage stabilizing didoe V5 is connected with the b utmost point of thyristor V6, the c utmost point of thyristor V6 and C utmost point rectifier diode (V1, V2) negative pole connects, one end of resistance R 6 is connected with the B utmost point of triode V7, the positive pole of one end of resistance R 7 and delay capacitor C2 is connected in parallel in the C utmost point of triode V7, one end of one end of resistance R 5 and capacitor C 1 is connected in parallel in the b utmost point of thyristor V6, the other end of resistance R 6, the E utmost point of triode V7, the other end of R7, the other end of delay capacitor C2, the other end of resistance R 5, the e utmost point of the other end of capacitor C 1 and thyristor V6 is connected in parallel in X2 incoming end.
8. according to any one described in claim 6 or 7, there is the pre-paying kilowatt-hour meter definite purpose circuit breaker of automatic reclosing, it is characterized in that: described thyristor V6 is bidirectional triode thyristor; Described control circuit (5) also comprises piezo-resistance RV1, the anodal parallel connection of one end of its one end and tripping coil, C utmost point rectifier diode (V1, V2), and the other end of this piezo-resistance RV1 is connected with N line.
9. the pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing according to claim 1, it is characterized in that: in described secondary circuit breaker (4), be provided with for controlling the contact switch (11) of the on/off of main circuit N line, it,, with the arrearage power-off tripping operation action disjunction of secondary circuit breaker (4), makes N line open circuit.
10. the pre-paying kilowatt-hour meter definite purpose circuit breaker with automatic reclosing according to claim 1, it is characterized in that: the power supply of described monophase machine M is provided by the control voltage output end (30) of pre-paying kilowatt-hour meter, and described monophase machine M is synchronous motor.
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| CN106787174A (en) * | 2016-11-29 | 2017-05-31 | 国网山东省电力公司济南供电公司 | A kind of electricity charge automatic power transmission system after continuing to pay dues |
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| CN104201016B (en) | 2016-07-06 |
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Application publication date: 20141210 Assignee: Zhejiang Chint Electrics Co.,Ltd. Assignor: NOARK ELECTRICS (SHANGHAI) Co.,Ltd. Contract record no.: X2020310000005 Denomination of invention: Circuit breaker with automatic reclosing function special for pre-paid electricity meter Granted publication date: 20160706 License type: Common License Record date: 20200518 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20141210 Assignee: ZHEJIANG CHINT ELECTRICS Co.,Ltd. Assignor: SHANGHAI NOARK ELECTRIC Co.,Ltd. Contract record no.: X2021330000593 Denomination of invention: A special circuit breaker for prepaid electricity meter with automatic reclosing Granted publication date: 20160706 License type: Common License Record date: 20211025 |