CN102938353B - Intelligent micro-breaker with automatic switching-on function - Google Patents
Intelligent micro-breaker with automatic switching-on function Download PDFInfo
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- CN102938353B CN102938353B CN201210442928.6A CN201210442928A CN102938353B CN 102938353 B CN102938353 B CN 102938353B CN 201210442928 A CN201210442928 A CN 201210442928A CN 102938353 B CN102938353 B CN 102938353B
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Abstract
The invention discloses an intelligent micro-breaker with an automatic switching-on function. The micro-breaker comprises a breaker body, wherein the breaker body comprises a case, the case consists of an upper cover and a bottom case, a breaker action mechanism which is used for switching the on/off state of the breaker, a line inlet end and a line outlet end are arranged in the case, the case also comprises a part with an automatic switching-on function, the part with the automatic switching-on function consists of an automatic switching-on mechanical unit and an automatic switching-on control unit, the automatic switching-on mechanical unit comprises a motor and an intermediate transmission mechanism, the motor runs through the automatic switching-on control unit, the transmission is achieved through the intermediate transmission mechanism, then the breaker action mechanism is driven to act, and the switching-on action of the breaker is achieved.
Description
Technical field
What the present invention relates to is a kind of circuit breaker, its to three-phase and single-phase circuit breaker all applicable, particularly be a kind of circuit breaker that can realize automatic switching-in function.
Background technology
Switch switchgear for power department, be ensure Electrical Safety, carry out the requisite equipment of circuit switching, along with country is to the release of intelligent grid plan, it is an important direction that breaker apparatus needs to stride forward to intelligence words.
Refer to shown in Figure 1A and Figure 1B, it is circuit breaker of the prior art, we are referred to as breaker body in the present invention, described circuit breaker can be three-phase also can be single-phase, can be common miniature circuit breaker, be also can be large switch, it all comprises: a box body, common box body is made up of upper cover and under casing, and described upper cover offers a short slot 1111, the ON/OFF position that the corresponding circuit breaker in the two ends of described short slot is in; One handle 114 stretches out described short slot; One under casing, described under casing is provided with circuit breaker actuating mechanism, and end of incoming cables and leading-out terminal, and described circuit breaker on-off action mechanism is triggered by described handle; Described circuit breaker actuating mechanism also comprises: the gangbar be connected with handle, the lower end of described gangbar is hinged is provided with acting arm, and the small end of described gangbar is provided with a spring, when gangbar under the effect at handle is rotated, thus the acting arm described in driving is rotated, moving contact in described acting arm is contacted with the fixed contact on described static contact, and described static contact is connected with the leading-out terminal on described under casing, thus realizes electric current to spread out of; Described acting arm is connected with described inlet wire sheet metal by a metal tie rods; The bottom of described moving contact and fixed contact contact area is provided with arc-control device; On described under casing, be provided with lateral isolation plate simultaneously.
But following defect is still had for existing circuit breaker:
1, in payment system, user to hand in after the electricity charge circuit breaker retroactively can not automatic closing, needs electricity consumer oneself to process, thus makes troubles to user;
2, when occurrence temperature crosses high abnormal electricity consumption situation, existing circuit breaker opening speed is slower;
3, when multiplexing electric abnormality situation is not got rid of, user can close a floodgate, thus may bring potential safety hazard.
In view of above-mentioned defect, creator of the present invention obtains this creation finally through long research and practice.
Summary of the invention
The object of the invention is to, a kind of intelligent micro-circuit breaker with automatic switching-in function is provided, in order to overcome above-mentioned defect.
For achieving the above object, the technical solution used in the present invention is, a kind of intelligent micro-circuit breaker with automatic switching-in function is provided, it comprises: a breaker body, described breaker body comprises: a box body, described box body is made up of upper cover and under casing, is provided with one in order to realize the circuit breaker actuating mechanism that circuit breaker open/close state switches in described box body, and end of incoming cables and leading-out terminal;
Also comprise at described tray interior: be provided with an automatic switching-in function part, it is made up of automatic closing machine assembly and automatic switching-in control unit, described automatic closing machine assembly comprises: a motor and an intermediate transmission mechanism; The running of the motor described in being realized by an automatic switching-in control unit, and by described intermediate transmission mechanism transmission, thus the circuit breaker actuating mechanism action described in driving, the feed motion of the circuit breaker described in final realization.
Wherein, described circuit breaker actuating mechanism comprises:
One stirs bar, and it stretches out box body outer (being similar to handle) by the short slot on described box body, or is placed in a described box body closed (namely poke rod is not exposed to box body);
One gangbar, it is connected with described poke rod, is rotated by the gangbar of stirring described in described poke rod drive;
One acting arm, which is provided with a moving contact, is rotated by described gangbar, realizes being contacting and separating of described moving contact and fixed contact.
Described intermediate transmission mechanism comprises:
One active rotating disk, obtain the moment of torsion of described motor, described active rotating disk is provided with arc chute, described arc chute is coaxial with described active rotating disk;
One driven turntable, it has link slot, the poke rod turn described in described driven turntable output shaft drives;
Described circuit breaker actuating mechanism also comprises:
One mechanical automatic locking mechanism, in order to when producing short circuit and being abnormal, makes described circuit breaker actuating mechanism complete feed motion; Described mechanical automatic locking mechanism comprises:
One gag lever post, its one end is provided with a crook, and the other end can be stretched out by the hole covering setting on described;
One metal triggers sheet, and be provided with hinge in the middle part of it, upper end has one and ejects end,
One linkage block, the end that ejects that itself and described metal trigger sheet leans mutually, and it rotates and forces described gangbar to be moved.
Preferably in order to make tray interior mechanical structure compacter, also comprise: a bracing frame is in order to arrange described mediation member.
Wherein, described bracing frame comprises: two relative supporting brackets, turn in the space of described poke rod between described supporting bracket.
Preferably, described under casing is also provided with a release, the motion end of described release is connected with described gangbar by a connecting rod, after the control signal that described release obtains from automatic switching-in control unit described on circuit board, described circuit breaker actuating mechanism is made to produce tripping action.
In order to realize better reset, in the middle part of described gag lever post, be provided with a groove, a cross bar and described supporting bracket concrete mutually, and through described groove, in described groove, be provided with back-moving spring.
Described automatic switching-in control unit comprises:
One power acquisition collected works unit, it obtains electric power signal from phase line, and carries out rectifying and wave-filtering process;
One motor action controls subelement, the electric power signal described in acquisition, and when receiving combined floodgate order, makes described motor action, and the circuit breaker actuating mechanism described in final realization produces feed motion.
In order to there is protection to short circuit or other abnormal electricity consumption situations, described automatic switching-in control unit also comprises:
One short circuit detection circuit, whether it has short circuit to occur in order to detect, and produces a dropout control signal when a short circuit occurs;
One dropout subelement, in order to when receiving described dropout control signal, makes described circuit breaker actuating mechanism produce tripping action.
In order to prevent the circuit breaker automatic closing when extremely not getting rid of, described automatic switching-in control unit also comprises:
One from lock control subelement, itself and described motor action control subelement and are connected, short circuit detection circuit described in reception exports the self-locking control signal that characterizes short-circuit state, thus the motor that described motor action is controlled described in subelement order does not produce action.
In order to realize Long-distance Control so that as the use of the functions such as pre-payment, also comprise: an external control unit, it controls subelement with described dropout subelement and described motor action respectively and is connected, and accepts external control signal, thus produces control action to described release and motor.
Wherein, described short circuit detection circuit comprises: at least for the short circuit detecing element that a phase line is arranged, it is connected with a judgment component, described judgment component according to the state of short circuit detecing element described under the abnormal conditions that are short-circuited, the self-locking control signal described in generation and described dropout control signal.
For the abnormal conditions that temperature is too high, also comprise: a temperature detection subelement, it detects liquidus temperature, when described temperature reaches a threshold value, produces a self-locking control signal and/or dropout control signal.
Wherein, described temperature detection subelement comprises: at least for the detector unit that a phase line is arranged, it is connected with a judgment component, described judgment component according to the state of detector unit described under occurrence temperature abnormal conditions, the self-locking control signal described in generation and/or dropout control signal.
In order to prevent motor movement from producing infringement after exceeding certain position, also comprising: a spacing subelement, after described breaker closing, sending control signal and controlling subelement to described motor action, making motor stalling.
One of embodiment of described spacing subelement is that described spacing subelement comprises: a photoelectrical coupler, and it is after breaker closing, and its output produces a state variation, and is passed to described motor action control subelement, makes motor stalling.
Beneficial effect of the present invention is compared with the prior art, the automatic closing of circuit breaker can be realized, can in generation as made circuit breaker disconnect when short circuit or temperature cross high abnormal electricity consumption situation, and when extremely not getting rid of, can not automatic closing, being applicable to the Long-distance Control of circuit breaker, is the basic product of intelligent grid development.
Accompanying drawing explanation
Figure 1A is the schematic perspective view of existing circuit breaker;
Figure 1B is the internal structure schematic front view of existing circuit breaker;
Fig. 2 A is the stereogram that the present invention has the intelligent micro-circuit breaker embodiment one of automatic switching-in function;
Fig. 2 B is the main body exploded view after intelligent micro-circuit breaker embodiment one that the present invention has an automatic switching-in function opens upper cover;
Fig. 2 C is the internal structure schematic side view that the present invention has the intelligent micro-circuit breaker embodiment one of automatic switching-in function;
Fig. 2 D-Fig. 2 F is the working state figure that the present invention has the intelligent micro-circuit breaker automatic closing machine assembly embodiment one of automatic switching-in function;
Fig. 3 is the three-dimensional exploded view that the present invention has automatic closing machine assembly in the intelligent micro-circuit breaker embodiment two of automatic switching-in function;
Fig. 4 A is the internal structure schematic side view that the present invention has the intelligent micro-circuit breaker embodiment three of automatic switching-in function;
Fig. 4 B is the three-dimensional exploded view that the present invention has the intelligent micro-circuit breaker automatic closing machine assembly embodiment three of automatic switching-in function;
Fig. 4 C-Fig. 4 E is the working state figure that the present invention has the intelligent micro-circuit breaker automatic closing machine assembly embodiment three of automatic switching-in function;
Fig. 4 F is that to have box body in the intelligent micro-circuit breaker embodiment two of automatic switching-in function be the internal structure schematic side view of closed state in the present invention;
Fig. 5 A is the intelligent micro-circuit breaker automatic closing machine assembly embodiment one that the present invention has automatic switching-in function, adds the main body exploded view opened after upper cover of mechanical short-circuit auto-lock function;
Fig. 5 B is the intelligent micro-circuit breaker automatic closing machine assembly embodiment one that the present invention has automatic switching-in function, adds the internal structure schematic side view of mechanical short-circuit auto-lock function.
Fig. 5 C-Fig. 5 E is the intelligent micro-circuit breaker automatic closing machine assembly embodiment one that the present invention has automatic switching-in function, working state figure when being short-circuited after adding mechanical short-circuit auto-lock function;
Fig. 5 F is that to have box body in the intelligent micro-circuit breaker embodiment one of automatic switching-in function be the internal structure schematic side view of closed state for the present invention that Fig. 5 B is corresponding;
Fig. 6 A is that the real automatic closing machine assembly of intelligent micro-circuit breaker that the present invention has an automatic switching-in function executes example two, adds the main body exploded view opened after upper cover of mechanical short-circuit auto-lock function;
Fig. 6 B is the intelligent micro-circuit breaker automatic closing machine assembly embodiment two that the present invention has automatic switching-in function, adds the internal structure schematic side view of mechanical short-circuit auto-lock function.
Fig. 6 C-Fig. 6 E is the intelligent micro-circuit breaker automatic closing machine assembly embodiment two that the present invention has automatic switching-in function, working state figure when being short-circuited after adding mechanical short-circuit auto-lock function;
Fig. 6 F is that to have box body in the intelligent micro-circuit breaker embodiment one of automatic switching-in function be the internal structure schematic side view of closed state for the present invention that Fig. 6 B is corresponding;
Fig. 7 A-Fig. 7 I is the automatic switching-in control unit schematic diagram that the present invention has the intelligent micro-circuit breaker of automatic switching-in function;
Fig. 7 J be the present invention have the built-in intelligent breaker of automatic switching-in function automatic closing control subelement reciprocating motion control circuit schematic diagram is realized to motor.
Embodiment
Below in conjunction with accompanying drawing, to above-mentioned being described in more detail with other technical characteristic and advantage of the present invention.
Refer to shown in Fig. 2 A and Fig. 2 B, it is respectively the present invention and has the stereogram of the intelligent micro-circuit breaker embodiment one of automatic switching-in function and the main body exploded view after opening upper cover; The described intelligent micro-circuit breaker with automatic switching-in function can be three-phase breaker also can be two-phase circuit breaker, and the number of the number of phases can't change the function realization structurally that the present invention realizes automatic closing, therefore the present invention has the intelligent micro-circuit breaker mechanical part of automatic switching-in function is that example is set forth by three-phase breaker.
The described intelligent micro-circuit breaker with automatic switching-in function comprises a breaker body, described breaker body comprises a box body, box body is made up of upper cover 11 and under casing 12, described under casing 12 is provided with outlet port 115 and inlet wire port 113, in order to realize described phase line and zero line access and to pick out; All be provided with longitudinal division board between each inlet wire (phase line, zero line) to separate, and be connected with inlet wire sheet metal in inside.
Refer to shown in Fig. 2 C, it has the internal structure schematic side view of the intelligent micro-circuit breaker embodiment one of automatic switching-in function for the present invention, described circuit breaker actuating mechanism comprises: poke rod 114, and the gangbar 413 to be connected with poke rod, it should be noted that in the present invention, arranging of poke rod 114 exists two states, one extends to be placed in outside box body, is similar to handle of the prior art, another kind of then be placed in closed box body, do not expose to box body; The present embodiment is the first state, the lower end of described gangbar 413 is hinged is provided with acting arm 411, and the small end of described gangbar 413 is provided with a spring, when under the effect of stirring bar 114, gangbar 413 is rotated, thus the acting arm 411 described in driving is rotated, moving contact in described acting arm 411 is contacted with the fixed contact on described static contact, and described static contact is connected with the end of incoming cables 113 on described under casing, thus realizes electric current to import into; Described acting arm is connected with described outlet sheet metal 115 by a metal tie rods; The bottom of described moving contact and fixed contact contact area is provided with arc-control device; On described under casing, be provided with lateral isolation plate simultaneously;
Also comprise: current transformer 14 its be arranged in described phase line; One automatic closing machine assembly, in order to realize the automatic switching-in function of described circuit breaker, described automatic closing machine assembly at least comprises: a motor 215, and it is arranged on described tripping action mechanism top; One intermediate transmission mechanism, described motor output power, and drive a dead man 211 leaning described poke rod 114 to move by described intermediate transmission mechanism, thus realize automatic closing; In described under casing, be provided with a circuit board 3 simultaneously, in order to realization, the present invention is had to the realization of other relevant control measuring abilities such as the automatic closing of the intelligent micro-circuit breaker of automatic switching-in function, here the intermediate transmission mechanism adopted is one speed reducer 216, the downside of described driving lever 211 is provided with travel switch 71, thus the travel switch 71 described in triggering when described dead man 211 moves to assigned address, finally make motor stop motion.
Also be provided with a release 13 at the bottom of described case, the motion end of described release 13 is connected with described gangbar 413 by connecting rod 412, when described release 13 obtains the control signal from control circuit corresponding on described circuit board 3; Produce trip action, i.e. gangbar 413 action described in motion end promotion of described release 13, thus described moving contact is separated with described fixed contact.Described release 13 is an electromagnet, and described motion end is its armature end.
Refer to shown in Fig. 2 D-Fig. 2 F, it has the working state figure of the intelligent micro-circuit breaker automatic closing machine assembly embodiment one of automatic switching-in function for the present invention; Initial condition (Fig. 2 D), the described intelligent micro-circuit breaker with automatic switching-in function is in off-state, and corresponding control signal do not received by the motor of now described automatic closing machine assembly; Operate condition (Fig. 2 E), corresponding control signal received by described motor, carry out rotating thus the described intelligent micro-circuit breaker with automatic switching-in function is closed a floodgate, move to the position of combined floodgate at described poke rod 114, described dead man 211 touches travel switch 71 motors 215 to be stopped running; Reset mode (Fig. 2 F), get back to initial condition position when touching the reversion of the motor 215 described in described travel switch 71, therefore the present embodiment is due to intermediate transmission mechanism, and described motor 215 exists the state of main story and reversion.
Refer to shown in Fig. 3, it has the three-dimensional exploded view of automatic closing machine assembly in the intelligent micro-circuit breaker embodiment two of automatic switching-in function for the present invention, embodiment two and embodiment one Main Differences are intermediate transmission mechanism, the intermediate transmission mechanism of the automatic closing machine assembly described in embodiment two comprises: a driving tooth wheel disc 511, the working face of described driving tooth wheel disc 511 is provided with into 120 degree of distributions and is separated projection, described working face is provided with unidirectional tooth, the mode that described driving tooth wheel disc 511 connects with axle is connected with described motor 215, preferably in situation, described motor 215 can be connected by the rotating shaft of a decelerator 216 with described driving tooth wheel disc 511, between described decelerator 216 and the back side of described driving tooth wheel disc 511, be provided with back-moving spring 514 simultaneously,
One driven tooth wheel disc 512, the working face of described driven tooth wheel disc 512 is provided with the unidirectional tooth corresponding with described driving tooth wheel disc 511, thus can ensure that driving tooth wheel disc 511 and driven tooth wheel disc 512 only can toward direction transmitting torques; The output shaft of described driven tooth wheel disc 512 is provided with key, described output the tip of the axis is provided with a groove;
Also comprise: a bracing frame 6, described bracing frame is provided with two relative supporting brackets; With the back side of described driven tooth wheel disc 512 relative to one described in supporting bracket on be provided with and become 120 degree to be separated the corresponding projection of projection with the working face of described driving tooth wheel disc 511, described projection is higher than described unidirectional tooth.Described supporting bracket offers relative axis hole, the output shaft of described driven tooth wheel disc 512 is through described axis hole, also axis hole is provided with in the middle of described poke rod 114, and described axis hole is provided with keyway, thus the bond energy on the output shaft of described driven tooth wheel disc 512 is enough embedded wherein, thus transmitting torque, embedded the groove of described output the tip of the axis by a jump ring 513, thus prevent the output shaft of described driven tooth wheel disc 512 to be separated with described poke rod 114.
One driving tooth wheel disc 511 and this structure of driven tooth wheel disc 512 are adopted for intermediate transmission mechanism, then motor 215 only rotates the function that just can realize automatic closing to a direction, namely when travel switch 71 is triggered by described poke rod 114, then motor 215 stops transmission, even if the described intelligent micro-circuit breaker with automatic switching-in function is disconnected, owing to being unidirectional tooth between described driving tooth wheel disc 511 and driven tooth wheel disc 512, stirring bar 114 get back to open position so can not affect.
Refer to shown in Fig. 4 A, it has the internal structure schematic side view of the intelligent micro-circuit breaker embodiment three of automatic switching-in function for the present invention; It compares difference with above-described embodiment one and is mainly, the intermediate transmission mechanism of described automatic closing machine assembly has different from it, the class crank and rocker mechanism adopted here.
Refer to shown in Fig. 4 B, it has the three-dimensional exploded view of the intelligent micro-circuit breaker embodiment three automatic closing machine assembly of automatic switching-in function for the present invention; The intermediate transmission mechanism of described automatic closing machine assembly comprises: an active rotating disk 223, described active rotating disk 223 is coupling on described decelerator 216, described active rotating disk 223 is seen and is provided with arc chute, described arc chute is coaxial with described active rotating disk 223;
One driven turntable 221, the output shaft of described driven turntable 221 is provided with key, and described output the tip of the axis is provided with a groove; Described driven turntable 221 has link slot;
One zee-crank 222, its one end is arranged in the arc chute of described active rotating disk 223, and its other end is placed in the groove of described driven turntable 221;
As above-described embodiment one, it also comprises: a bracing frame 6, and described bracing frame is provided with two relative supporting brackets; Described supporting bracket offers relative axis hole, the output shaft of described driven turntable 221 is through described axis hole, also axis hole is provided with in the middle of described poke rod 114, and described axis hole is provided with keyway, thus the bond energy on the output shaft of described driven turntable 221 is enough embedded wherein, thus transmitting torque, embedded the groove of described output the tip of the axis by a jump ring 513, thus prevent the output shaft of described driven turntable 221 to be separated with described bar of stirring.
Refer to shown in Fig. 4 C-Fig. 4 E, it has the working state figure of the intelligent micro-circuit breaker automatic closing machine assembly embodiment three of automatic switching-in function for the present invention; Initial condition (Fig. 4 C), the described intelligent micro-circuit breaker with automatic switching-in function is in off-state, and corresponding control signal do not received by the motor 215 of now described automatic closing machine assembly; Operate condition (Fig. 4 D), corresponding control signal received by described motor, rotate, thus the active rotating disk 223 described in driving rotates, described crank gearing gives described driven turntable 221, thus drive poke rod 114 action that the described intelligent micro-circuit breaker with automatic switching-in function is closed a floodgate, move to the position of combined floodgate at described poke rod, described poke rod touch travel switch then motor stop running; According to the radius of theory of mechanics by the driven runner of adjustment, the initiatively length of the radius of rotating disk and the arc length of arc chute and crank, those skilled in the art are easy to realize, and the circular motion of described active rotating disk is to reciprocal between corresponding two extreme positions (being in Kai Heguan for poke rod) of described driven turntable.
Refer to shown in Fig. 4 F, it has the internal structure schematic side view of intelligent micro-circuit breaker embodiment three under box body is in closed state of automatic switching-in function for the present invention; Namely in this embodiment, poke rod does not expose.
Refer to shown in Fig. 5 A and Fig. 5 B, it is respectively the intelligent micro-circuit breaker embodiment one that the present invention has automatic switching-in function, and what add mechanical short-circuit auto-lock function opens the main body exploded view after upper cover and internal structure schematic side view; Described mechanical short-circuit auto-lock function is realized by a short-circuit self-locking mechanism, described short-circuit self-locking mechanism has structure in each phase line, comprising: a gag lever post 82, described gag lever post 82 one end is provided with a crook, it is hooked in the groove that an axial gangbar of described linkage unit is arranged, described axial gangbar 413 can swing, and the other end can be stretched out by the hole 1111 covering setting on described; Be provided with a groove in the middle part of described gag lever post 82, a fixture 81 from below with described bracing frame 6 concrete mutually, and through described groove, in described groove, be provided with back-moving spring 87; When occurring short circuit, then inlet wire produces powerful magnetic field, make described metal trigger sheet 85 to be attracted, thus rotate around described twisted axis, thus make described to eject end, linkage block 84 action described in promotion, and then the described gangbar 413 described in connecting rod drive is rotated, finally make described sound contact separation; Simultaneously, because described metal triggers the rotation of sheet 85, thus make described gag lever post 82 lose the restriction of metal triggering sheet 85, thus move upward under the effect of back-moving spring 83, stretch out from the hole 1111 of described upper cover, this is that crook withstands on described metal triggering sheet 85, thus makes it not reset, and namely forms short circuit self-locking.In this case, the indicative function that the gag lever post 82 stretched out also plays proves, current circuit breaker off state is caused by short circuit, if want close a floodgate will think by the gag lever post stretched out by go back unlock.
In like manner above-mentioned mechanical short-circuit self-locking mechanism, also can be arranged in the middle of embodiment corresponding to other two kinds of automatic closing machine assemblies above-mentioned (consulting Fig. 6 A and Fig. 6 B), this is easy to realize according to description above to those of ordinary skill in the art, has just repeated no more here.
Refer to shown in Fig. 5 C-Fig. 5 E, it has the intelligent micro-circuit breaker embodiment one of automatic switching-in function, working state figure when being short-circuited after adding mechanical short-circuit auto-lock function for the present invention; Consult shown in Fig. 6 C-Fig. 6 E, it has the intelligent micro-circuit breaker embodiment two of automatic switching-in function, working state figure when being short-circuited after adding mechanical short-circuit auto-lock function for the present invention simultaneously;
Here automatic closing machine assembly can adopt any one in three kinds of above-mentioned embodiments, herein only for the ratchet engaged transmission of the dead man of the first and the second, this is readily appreciated that according to description above those of ordinary skill in the art, has just repeated no more here.
Refer to Fig. 5 F and Fig. 6 F, it is respectively in the middle of above-mentioned corresponding embodiment, and box body is in the internal structure schematic side view under closed state; Namely, in these two embodiments, poke rod does not expose.Thus make electric consumer can not oneself by stirring poke rod (can handle be referred to as when exposing), realize the operation to circuit breaker.
Refer to shown in Fig. 7 A, it has the automatic switching-in control unit schematic diagram one of the intelligent micro-circuit breaker of automatic switching-in function for the present invention, the present embodiment is for three-phase, described control circuit comprises: a power acquisition collected works unit, it obtains current signal from described phase line, described power acquisition collected works unit relates generally to the rectifying and wave-filtering effect to phase line current, adopts three diode D1 ~ D3 to be connected with phase line A ~ C respectively here, and adopts electric capacity C3 to carry out filtering;
One voltage stabilizing circuit, it comprises: a voltage-stabiliser tube DW1 and electric capacity C1, C2 in parallel with it, the minus earth of wherein said electric capacity C1, and its positive pole is connected with the output of described power acquisition collected works unit;
One dropout subelement, in order to when receiving a dropout control signal, makes circuit breaker produce tripping action; It comprises an electromagnet, and one end of its solenoid TQXQ obtains a unidirectional voltage (electric current) from described power acquisition collector, and its other end, by a controllable silicon SCR ground connection, is provided with an electric capacity C4 between described controllable silicon SCR control end and ground;
One short circuit detection circuit, whether it has short circuit to occur in order to detect, export a control signal when a short circuit occurs, described short circuit detection circuit comprises: three groups of short circuit detecing elements and judgment component, described short circuit detecing element is in order to produce a variable quantity (here with tongue tube Sa when being short-circuited exception, Sb, Sc is example), described decision element (adopting comparator IC1-1 ~ IC1-3 to be example here) obtains a variable quantity by described short circuit detecing element and compares with a benchmark preset, (both quantity is consistent with phase line number), described tongue tube Sa, Sb, one end of Sc is connected with the in-phase end of described comparator IC1-1 ~ IC1-3, the other end of described tongue tube Sa, Sb, Sc, is connected with the output of described power acquisition collected works unit, as the comparison signal of described comparator IC1-1 ~ IC1-3, the end of oppisite phase of described comparator IC1-1 ~ IC1-3 obtains a stable voltage signal, as reference voltage, obtained by component piezoresistance R3, a R4 in the present embodiment, wherein, one end of described divider resistance R3 is connected with the electric capacity C1 negative electrode in described voltage stabilizing circuit, and the other end is connected with the output of described power acquisition collected works unit, diode D7, D10, D13 is provided with between the output of each comparator IC1-1 ~ IC1-3 and positive terminal, tongue tube Sa, Sb, Sc of each described short-circuit detecting circuit are connected with the control end of described controllable silicon SCR by diode D5, D9, a D12, in order to export dropout control signal to described controllable silicon SCR,
One from lock control subelement, its receive described in the signal of sign short-circuit state of output of short circuit detection circuit, thus make described motor not produce action; It comprises: one first triode Q2, the collector electrode of described first triode Q2 is connected with the output of described power acquisition collected works unit, the grounded emitter of described first triode Q2, the output signal of the comparator IC1-1 ~ IC1-3 described in one pull-up resistor R5 obtains, and have the base stage of the first described triode Q2 to be connected, and described base stage is connected to the ground by resistance R6, between the emitter and collector of the first described triode Q2, be connected with a resistance R7;
One motor automatic closing controls subelement, and it comprises: one second triode Q1, and the base stage of described second triode Q1 is connected with the collector electrode of the first described diode Q2, the grounded emitter of described second triode Q1; Described motor M one end is connected with the output of described power acquisition collected works unit, and the other end is connected with the collector electrode of the second described triode Q1;
Preferably, in order to match with the result in mechanical structure, the circuit controlling subelement be provided with limit switch K1, reach stall behind precalculated position in order to control motor M, thus guarantee breaker closing position at described motor automatic closing;
The circuit preferably controlling subelement at described motor automatic closing is provided with the inspection switch K3 (also referred to as locking) of an artificial opening and closing, and namely when this K switch 3 is in off-state, described motor M all can not action under any state;
Also comprise: a dropout subelement reset circuit, it comprises: a reset key REST, and its first end is connected with the control end of described controllable silicon SCR, its second end ground connection;
Preferably be provided with LED a, LEDb, a LEDc, in order to play indicative function at the output of described comparator IC1-1 ~ IC1-3.
Refer to shown in Fig. 7 B, its automatic closing having the intelligent micro-circuit breaker of automatic switching-in function for the present invention controls subelement schematic diagram two, this schematic diagram and schematic diagram one must be distinguished and be, add external control subelement, its object can meet the needs as prepaid fee power management system, described external control subelement comprises: be provided with a unidirectional current element, as diode D16, and control element, namely described control element comprises and also comprises to the control of dropout subelement control motor automatic closing being controlled to subelement, described automatic closing controls subelement and comprises: one the 3rd triode Q4, its base stage receives external control signal, an electric capacity C5 is connected with between its emitter and collector, the wherein negative electrode of electric capacity C5 and the grounded emitter of described 3rd triode Q4, the collector electrode of the 3rd described triode Q4 is connected with the control end of described controllable silicon SCR by a diode D15, namely, when external control signal is high potential, described release does not produce trip action, one the 4th triode Q3, the emitter and collector of the 4th described triode Q3 (positive-negative-positive) is arranged at described motor M automatic closing and controls on subelement circuit, the base stage of the 4th described triode Q3 is connected with the collector electrode of the 3rd described triode Q4, namely, when external control signal is high potential, the 4th described triode Q3 is conducting, when described external control signal is electronegative potential, described dropout subelement produces trip action, and the 4th triode Q3 is simultaneously in cut-off state, and namely motor automatic closing control subelement can not action.
Preferably also be provided with external control indicating circuit, it comprises: a light-emitting diodes LED pipe, one end ground connection, and the other end is connected with a resistance R11, and when external control signal is high voltage, it is in illuminating state, otherwise then extinguishes.
Refer to shown in Fig. 7 C, its automatic closing having the intelligent micro-circuit breaker of automatic switching-in function for the present invention controls subelement schematic diagram three, the difference of the present embodiment and above-mentioned schematic diagram two is mainly, its be for be single-phase circuit breaker, therefore its circuit is only omit to some extent, but the mechanism of circuit is identical, for those of ordinary skills, obviously just can be clear by foregoing description, just do not repeating here.
Refer to shown in Fig. 7 D, its automatic closing having the intelligent micro-circuit breaker of automatic switching-in function for the present invention controls subelement schematic diagram four, the difference of the present embodiment and above-mentioned schematic diagram one is mainly, it adds a spacing subelement accordingly, and do not adopt limit switch, thus save space; Described spacing subelement comprises: a photoelectrical coupler IC, one input of wherein said photoelectrical coupler IC adopts diode D14 to be connected with described phase line with dropping resistor R7 here by a unidirectional current element, another input end grounding, an output head grounding of described photoelectrical coupler IC, another output is connected with the base stage of the second described triode Q1; Namely after described motor M realizes automatic closing, the output of described photoelectrical coupler IC exports electronegative potential, thus the second described triode Q1 is ended because base stage obtains electronegative potential, and then described motor M automatic closing is made to control subelement open circuit, final motor stalling.
Refer to shown in Fig. 7 E, its automatic closing having the intelligent micro-circuit breaker of automatic switching-in function for the present invention controls subelement schematic diagram five, the difference of the present embodiment and above-mentioned schematic diagram three is mainly, it adds a spacing subelement accordingly, and do not adopt limit switch, thus save space; Described spacing subelement comprises: a photoelectrical coupler IC, one input of wherein said photoelectrical coupler IC adopts diode D14 to be connected with described phase line with dropping resistor R7 here by a unidirectional current element, another input end grounding, an output head grounding of described photoelectrical coupler IC, another output is connected with the base stage of the second described triode Q1; Namely after described motor M realizes automatic closing, the output of described photoelectrical coupler IC exports electronegative potential, thus the second described triode Q1 is ended because base stage obtains electronegative potential, and then described motor M automatic closing is made to control subelement open circuit, final motor stalling.
Refer to shown in Fig. 7 F, its automatic closing having the intelligent micro-circuit breaker of automatic switching-in function for the present invention controls subelement schematic diagram six, the difference of the present embodiment and above-mentioned schematic diagram one is mainly, the present embodiment detects for overcurrent, therefore not at use tongue tube Sa, Sb, Sc but adopt current acquisition element, that adopt here is current transformer TAa, Tab, Tac, it is separately positioned in each phase line, and be converted into voltage signal, be transferred to described comparator IC1-1 ~ IC1-3, the Signal transmissions of output is not only given described self-locking and automatic shutting-brake control subelement by the comparator IC1-1 ~ IC1-3 simultaneously, be transferred to the control end of the controllable silicon SCR of described dropout subelement simultaneously, namely when producing throat floater, described comparator IC1-1 ~ IC1-3 exports high potential signal to the control end of described controllable silicon SCR, thus make it produce trip action, it should be noted that the reference voltage of the end of oppisite phase of described comparator IC1-1 ~ IC1-3 is owing to have employed slide rheostat w, so the threshold value that overcurrent compares is adjustable.
Refer to shown in Fig. 7 G, its automatic closing having the intelligent micro-circuit breaker of automatic switching-in function for the present invention controls subelement schematic diagram seven, the difference of the present embodiment and above-mentioned schematic diagram one is mainly, it adds a temperature detection subelement accordingly, in order to when temperature reaches certain threshold value, make described circuit breaker open circuit, and auto-lock function is produced to motor; Described temperature detection subelement comprises: at least for the detector unit (here to adopt temperature sensor ta, tb, tc) that a phase line is arranged, it is connected with a judgment component (here to adopt comparator IC1-1 ~ IC1-3), described judgment component according to the state of detector unit described under occurrence temperature abnormal conditions, produce a self-locking control signal and dropout control signal at least one of them.Specifically be provided with three groups of temperature sensors ta, tb, tc and comparator IC2-1 ~ IC2-3 (both quantity is consistent with phase line number) for this enforcement, one end of described temperature sensor ta, tb, tc is connected with the in-phase end of described comparator IC2-1 ~ IC2-3; The other end of described temperature sensor ta, tb, tc, is connected with the output of described power acquisition collected works unit, as the comparison signal of described comparator IC2-1 ~ IC2-3; The end of oppisite phase of described comparator IC2-1 ~ IC2-3 obtains a stable voltage signal, as reference voltage; Obtained by component piezoresistance R2, a R3 in the present embodiment, wherein, one end of described divider resistance R2 is connected with the electric capacity C1 negative electrode in described voltage stabilizing circuit, and the other end is connected with the output of described power acquisition collected works unit (sharing with described short circuit self-locking subelement); Diode D22, D19, D16 is provided with between the output of each comparator IC2-1 ~ IC2-3 and positive terminal; Described temperature detection subelement is connected with the control end of described controllable silicon SCR by diode D21, D17, a D14, in order to export dropout control signal to described controllable silicon SCR; Preferably at the output of described comparator IC2-1 ~ IC2-3, a LED Ta ~ LEDTb is also set in order to play indicative function.
Refer to shown in Fig. 7 H, its automatic closing having the intelligent micro-circuit breaker of automatic switching-in function for the present invention controls subelement schematic diagram eight, the present embodiment matches with above-mentioned mechanical open circuit self-locking, therefore be mainly with the difference of above-mentioned schematic diagram two in the structure of circuit, here be no longer provided with short circuit detecting unit and self-locking and automatic shutting-brake control subelement, but only adopt the form of mechanical self-latching to reach object of the present invention.
Refer to shown in Fig. 7 I, its automatic closing having the intelligent micro-circuit breaker of automatic switching-in function for the present invention controls subelement schematic diagram nine, this schematic diagram embodies and realize an intelligentized example by processor in existing control technology, wherein, by current transformer TAa, TAb, TAc is from power line A, B, current value in the every bar phase line of the upper acquisition of C, and by an analog to digital conversion circuit, be converted to corresponding digital signal, be transferred to described processor MCU, the program preset in described processor MCU, the power information obtained can be judged, judge the abnormal problems such as overcurrent/short circuit, thus export corresponding control signal, an analog power circuit, it is made up of divider resistance R1 ~ R6, obtains magnitude of voltage to described analog to digital conversion circuit from every bar phase line, one digital power circuit, obtain after power supply signal by voltage transformer BT from power line, after the process of voltage stabilizing chip D, be connected with described processor MCU, for it provides power supply signal, between described digital power circuit and processor MCU, be provided with a K switch 3, in order to cut off the supply of electric power to described processor MCU, thus when maintenance, avoid the unreasonable control because of processor MCU to cause accident, can also comprise: one group of temperature sensor IC1 ~ IC3, it detects the temperature value of each phase line Nodes, and is converted into a digital data transmission to described processor MCU, exports a control signal when having described processor MCU to judge that temperature exceeds a threshold value, one current rectifying and wave filtering circuit is made up of three diode D1 ~ D3 and electric capacity C2 resistance R8, it provides power supply supply for a release TQXQ, the de-mouth coil of described release connects ground by a controllable silicon SCR, and the control end of described controllable silicon SCR is connected with an output of described processor MCU, the present invention is in order to increase new intelligent functions, described processor MCU can also be connected with a telecommunication circuit, it can carry out the mutual of data by the mode of wire/wireless and other communication equipment, thus can receive the control signal (pre-payment combined floodgate/power-off signal) of outer end, one memory, in order to store the every data in circuit breaker, one display circuit, in order to show the various state informations detected by circuit breaker, the box body of circuit breaker is provided with corresponding display screen, one clock circuit and a keyboard circuit, it is respectively in order to provide clock signal and input command to described processor MCU, from specific implementation, these functional circuits described above say that corresponding circuit has a variety of, be all well-known, those skilled in the art can specifically select as required, are not just repeating here, output PX.1, PX.2 of described processor MCU in order to being connected from lock control subelement in embodiment above, and then control the action that motor automatic closing controls subelement, also motor automatic closing that can be direct with described controls subelement and is connected, whether removed according to current electricity exception situation by described processor MCU, determine whether to need to allow described automatic closing control the action of subelement.
Refer to shown in Fig. 7 J, its automatic closing control subelement having the built-in intelligent breaker of automatic switching-in function for the present invention realizes reciprocating motion control circuit schematic diagram to motor, in this schematic diagram, there is the triode Q5 of four groups of PNP, Q6, Q8, Q9 and protection diode D10, D11, D13, D14, its collector electrode is connected with the anode of protection diode, its emitter is connected with the negative electrode of diode, and the positive terminal of motor is connected with the triode Q6 of two groups of PNP, Q9 and protection diode D11, D14 collector electrode, and the emitter between two groups links together, the end of oppisite phase of described motor is connected with triode Q5, Q8 and protection diode D10, D13 collector electrode of other two groups of PNP, and the emitter between two groups links together, one first unilateral diode D9, its anode is connected with the positive terminal of described motor, and its negative electrode is connected with processor one control end PX.2, one second unilateral diode D12, its anode is connected with the end of oppisite phase of described motor, its negative electrode is connected with processor one control end PX.1 (referring to shown in Fig. 9 G), the base stage of described PNP triode Q9 is connected with the emitter of a PNP triode Q7, and the base stage of described PNP triode Q7 is connected with described control end PX.1, the base stage of described PNP triode Q8 is connected with the emitter of a PNP triode Q4, and the base stage of described PNP triode Q4 is connected with described control end PX.2, and the collector electrode pole of described PNP triode Q4 is connected with described PNP triode Q6 base stage, described PNP triode Q5 base stage is connected with described PNP triode Q7 collector electrode, PNP triode Q6 base stage is simultaneously connected with described PNP triode Q4 collector electrode.By the output signal of processor control end PX.1 and PX.2, thus control the rotating of motor, thus realize the reciprocating motion of corresponding actions mechanism.
The foregoing is only preferred embodiment of the present invention, is only illustrative for the purpose of the present invention, and and nonrestrictive.Those skilled in the art is understood, and in the spirit and scope that the claims in the present invention limit, can carry out many changes to it, amendment, even equivalence, but all will fall within the scope of protection of the present invention.
Claims (17)
1. one kind has the intelligent micro-circuit breaker of automatic switching-in function, it comprises: a breaker body, described breaker body comprises: a box body, described box body is made up of upper cover and under casing, one is provided with in order to realize the circuit breaker actuating mechanism that circuit breaker open/close state switches in described box body, and end of incoming cables and leading-out terminal;
It is characterized in that: also comprise at described tray interior: be provided with an automatic switching-in function part, it is made up of automatic closing machine assembly and automatic switching-in control unit, described automatic closing machine assembly comprises: a motor and an intermediate transmission mechanism; The running of the motor described in being realized by an automatic switching-in control unit, and by described intermediate transmission mechanism transmission, thus the circuit breaker actuating mechanism action described in driving, the feed motion of the circuit breaker described in final realization;
Described circuit breaker actuating mechanism comprises:
One poke rod, it is stretched out outside box body by the short slot on described box body, or is placed in a described box body closed;
One gangbar, it is connected with described poke rod, is rotated by the gangbar of stirring described in described poke rod drive;
One acting arm, which is provided with a moving contact, is rotated by described gangbar, realizes being contacting and separating of described moving contact and fixed contact;
Described intermediate transmission mechanism comprises:
One active rotating disk, obtain the moment of torsion of described motor, described active rotating disk is provided with arc chute, described arc chute is coaxial with described active rotating disk;
One driven turntable, it has link slot, the poke rod turn described in described driven turntable output shaft drives;
Described circuit breaker actuating mechanism also comprises:
One mechanical automatic locking mechanism, in order to when producing short circuit and being abnormal, makes described circuit breaker actuating mechanism complete feed motion;
Described mechanical automatic locking mechanism comprises:
One gag lever post, its one end is provided with a crook, and the other end can be stretched out by the hole covering setting on described;
One metal triggers sheet, and be provided with hinge in the middle part of it, upper end has one and ejects end,
One linkage block, the end that ejects that itself and described metal trigger sheet leans mutually, and it rotates and forces described gangbar to be moved.
2. the intelligent micro-circuit breaker with automatic switching-in function according to claim 1, is characterized in that, also comprise: a bracing frame is in order to arrange described intermediate transmission mechanism.
3. the intelligent micro-circuit breaker with automatic switching-in function according to claim 2, is characterized in that, described bracing frame comprises: two relative supporting brackets, turn in the space of described poke rod between described supporting bracket.
4. the intelligent micro-circuit breaker with automatic switching-in function according to claim 1, it is characterized in that, described under casing is also provided with a release, the motion end of described release is connected with described gangbar by a connecting rod, after the control signal that described release obtains from automatic switching-in control unit described on circuit board, described circuit breaker actuating mechanism is made to produce tripping action.
5. the intelligent micro-circuit breaker with automatic switching-in function according to claim 3, it is characterized in that, in the middle part of described gag lever post, be provided with a groove, a cross bar and described supporting bracket concrete mutually, and through described groove, in described groove, be provided with back-moving spring.
6. the intelligent micro-circuit breaker with automatic switching-in function according to the arbitrary claim of claim 1-5, is characterized in that, described automatic switching-in control unit comprises:
One power acquisition collected works unit, it obtains electric power signal from phase line, and carries out rectifying and wave-filtering process;
One motor action controls subelement, the electric power signal described in acquisition, and when receiving combined floodgate order, makes described motor action, and the circuit breaker actuating mechanism described in final realization produces feed motion.
7. the intelligent micro-circuit breaker with automatic switching-in function according to claim 6, is characterized in that, described automatic switching-in control unit also comprises:
One short circuit detection circuit, whether it has short circuit to occur in order to detect, and produces a dropout control signal when a short circuit occurs;
One dropout subelement, in order to when receiving described dropout control signal, makes described circuit breaker actuating mechanism produce tripping action.
8. the intelligent micro-circuit breaker with automatic switching-in function according to claim 7, is characterized in that, described automatic switching-in control unit also comprises:
One from lock control subelement, itself and described motor action control subelement and are connected, short circuit detection circuit described in reception exports the self-locking control signal that characterizes short-circuit state, thus the motor that described motor action is controlled described in subelement order does not produce action.
9. the intelligent micro-circuit breaker with automatic switching-in function according to claim 8, it is characterized in that, also comprise: an external control unit, it controls subelement with described dropout subelement and described motor action respectively and is connected, and accept external control signal, thus control action is produced to a release and motor.
10. the intelligent micro-circuit breaker with automatic switching-in function according to claim 9, it is characterized in that, described short circuit detection circuit comprises: at least for the short circuit detecing element that a phase line is arranged, it is connected with a judgment component, described judgment component according to the state of short circuit detecing element described under the abnormal conditions that are short-circuited, the self-locking control signal described in generation and described dropout control signal.
11. intelligent micro-circuit breakers with automatic switching-in function according to claim 9, it is characterized in that, also comprise: a temperature detection subelement, it detects liquidus temperature, when described temperature reaches a threshold value, produce a self-locking control signal and/or dropout control signal.
12. intelligent micro-circuit breakers with automatic switching-in function according to claim 11, it is characterized in that, described temperature detection subelement comprises: at least for the detector unit that a phase line is arranged, it is connected with a judgment component, described judgment component according to the state of detector unit described under occurrence temperature abnormal conditions, the self-locking control signal described in generation and/or dropout control signal.
13. intelligent micro-circuit breakers with automatic switching-in function according to claim 7, is characterized in that, also comprise: a spacing subelement, after described breaker closing, send control signal and control subelement to described motor action, make motor stalling.
14. intelligent micro-circuit breakers with automatic switching-in function according to claim 13, it is characterized in that, described spacing subelement comprises: a photoelectrical coupler, it is after breaker closing, its output produces a state variation, and passed to described motor action control subelement, make motor stalling.
15. intelligent micro-circuit breakers with automatic switching-in function according to claim 7, it is characterized in that, also comprise: a processor, it is connected with described power acquisition collected works unit by an analog to digital conversion circuit, in order to according to the electric current of programmed decision collection preset in described processor or/and whether voltage exists exception, and export control signal accordingly.
16. intelligent micro-circuit breakers with automatic switching-in function according to claim 15, is characterized in that, also comprise: a display circuit or memory circuit or telecommunication circuit at least one of them, it is connected with described processor.
17. intelligent micro-circuit breakers with automatic switching-in function according to claim 15, it is characterized in that, also comprise: a keyboard circuit, it is connected with described processor, in order to order to the input of described processor is corresponding.
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| CN103928272B (en) * | 2014-03-19 | 2015-12-02 | 浙江天正智能电器有限公司 | A kind of breaker structure and circuit breaker utilizing electrodynamic repulsion force rapid-releasing |
| CN104779097A (en) * | 2015-03-26 | 2015-07-15 | 安徽波瑞电气有限公司 | Intelligent circuit breaker based on visible light communications |
| CN106200443A (en) * | 2015-05-05 | 2016-12-07 | 安徽波瑞电气有限公司 | Miniature circuit breakers based on IPV6 intelligence MANET wireless telecommunications |
| CN113451063A (en) * | 2020-03-24 | 2021-09-28 | 天津首瑞智能电气有限公司 | Switch |
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| CN1170213A (en) * | 1996-03-18 | 1998-01-14 | 施耐德电器公司 | Remote control device for modular circuit breaker |
| CN101170027A (en) * | 2006-10-23 | 2008-04-30 | 哥维斯股份公司 | Automatic reset and self-test device particularly for residual current operated circuit breakers and the like |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7061349B2 (en) * | 2004-03-29 | 2006-06-13 | General Electric Company | Circuit breaker configured to be remotely operated |
| KR100718530B1 (en) * | 2006-04-29 | 2007-05-18 | 이한식 | Earth leakage breaker with automatic return means |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170213A (en) * | 1996-03-18 | 1998-01-14 | 施耐德电器公司 | Remote control device for modular circuit breaker |
| CN101170027A (en) * | 2006-10-23 | 2008-04-30 | 哥维斯股份公司 | Automatic reset and self-test device particularly for residual current operated circuit breakers and the like |
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Denomination of invention: Intelligent miniature circuit breaker with automatic closing function Effective date of registration: 20230331 Granted publication date: 20150513 Pledgee: Bank of China Limited Wuhan Hanyang sub branch Pledgor: HUBEI SHENGJIA WIRING Co.,Ltd. Registration number: Y2023420000144 |