CN101707166B - Built-in B type intelligent circuit breaker with automatic closing function - Google Patents
Built-in B type intelligent circuit breaker with automatic closing function Download PDFInfo
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- CN101707166B CN101707166B CN 200910179378 CN200910179378A CN101707166B CN 101707166 B CN101707166 B CN 101707166B CN 200910179378 CN200910179378 CN 200910179378 CN 200910179378 A CN200910179378 A CN 200910179378A CN 101707166 B CN101707166 B CN 101707166B
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Abstract
The invention relates to a built-in B type intelligent circuit breaker with automatic closing function. The circuit breaker comprises a circuit breaker body and a bearing plate, wherein the circuit breaker body comprises a box body which is provided with a circuit breaker actuating mechanism, an incoming line terminal and an outgoing line terminal, the circuit breaker actuating mechanism is triggered by a shifter lever in the box body; the bearing plate is arranged between a upper cover and a bottom chamber and is provided with gear rack mechanism and a stirring part, stirring part is connected with the shifter lever; the inside of the bottom chamber is provides with an electric motor, and the rotation of the electric motor is converted to the reciprocating action of the stirring part by the crank part under the control of an automatic closing control unit so as to realize the on/off state switch of the shifter lever.
Description
Technical field
What the present invention relates to is a kind of circuit breaker, particularly be the circuit breaker that a kind of motor that can realize automatic switching-in function places under casing, poke rod not to expose.
Background technology
Switch switchgear for power department is the assurance Electrical Safety, carries out the requisite equipment of circuit switching, and along with the release of country to the intelligent grid plan, it is an important direction that breaker apparatus need to stride forward to the intelligence words.
See also shown in Figure 1, it is circuit breaker of the prior art, we are referred to as breaker body with it in the present invention, described circuit breaker can be three-phase also can be single-phase, can be common miniature circuit breaker, also be can be large switch, it all comprises: a box body, common box body is comprised of loam cake and under casing, and described loam cake offers a short slot, the ON/OFF position that the corresponding circuit breaker in the two ends of described short slot is in; One poke rod stretches out described short slot; One under casing is provided with circuit breaker actuating mechanism on the described under casing, and end of incoming cables and leading-out terminal, and described circuit breaker actuating mechanism triggers by described poke rod; Described circuit breaker actuating mechanism also comprises the linkage unit that is connected with poke rod, the hinged acting arm that is provided with in one gangbar lower end of described linkage unit, linkage unit rotates under the effect at poke rod, thereby driving described acting arm rotates, moving contact on the described acting arm is contacted with fixed contact on the described static contact, described static contact is connected with leading-out terminal on the described under casing, thereby realizes electric current is spread out of.
But still have following defective for existing circuit breaker:
1, in payment system, the user hands in after the electricity charge circuit breaker retroactively can not automatic closing, needs electricity consumer oneself to process, thereby makes troubles to the user;
2, when occurrence temperature is crossed high unusual electricity consumption situation, existing circuit breaker opening speed is slower;
3, in the situation that the multiplexing electric abnormality situation does not have to get rid of, the user can close a floodgate, thereby may bring potential safety hazard.
In view of defects, creator of the present invention has obtained this creation finally through long research and practice.
Summary of the invention
The object of the invention is to, provide a kind of built-in B type intelligent circuit breaker with automatic switching-in function, in order to overcome defects.
For achieving the above object, the technical solution used in the present invention is, a kind of built-in B type intelligent circuit breaker with automatic switching-in function is provided, and it comprises:
One box body is provided with circuit breaker actuating mechanism in the described box body, and end of incoming cables and leading-out terminal, and described circuit breaker actuating mechanism realizes triggering by a poke rod that is positioned at described box body;
Also comprise: a loading plate, it is positioned at described box body, is provided with a pinion and rack and a clicking section on the described loading plate, and described clicking section is connected with described poke rod;
Be provided with a motor in the described box body, it is under the control of an automatic switching-in control unit, described pinion and rack is converted into the reciprocating action of described clicking section with the rotation of described motor, makes described poke rod trigger described circuit breaker actuating mechanism and realizes the logical and disconnected of circuit breaker.
Wherein, described loading plate offers an opening, is provided with the chute of opposing parallel in the both sides of described opening;
Described clicking section is a framework, and described poke rod passes in the middle of described framework, and described framework both sides are provided with the slide rail that can move along described chute.
Wherein, described pinion and rack comprises:
One tooth bar, it combines with described framework, can drive the framework reciprocating motion;
One first gear, it is arranged on the described loading plate, and is meshed with described tooth bar.
In another embodiment, also comprise one second gear, described the second gear is located on the described loading plate, and is meshed with described the first gear.
Better, be provided with at least one guide and limit groove on the described framework flank; At least one guide limiting stopper that is arranged at described tooth bar flank, it is corresponding with described guide and limit groove;
Better, also comprise: one speed reducer, it is arranged on the output shaft of described motor.
Described automatic switching-in control unit comprises:
One power acquisition collected works unit, it obtains electric power signal from described phase line, and carries out rectifying and wave-filtering and process;
One motor action control subelement obtains described electric power signal, and when receiving the combined floodgate order, makes described motor action, realizes that finally described circuit breaker actuating mechanism produces feed motion.
For there are protection in short circuit or other unusual electricity consumption situations, described automatic switching-in control unit also comprises:
One short circuit circuit for detecting, whether it has short circuit to occur in order to detect, and produces a dropout control signal when being short-circuited;
One dropout subelement in order to when receiving described dropout control signal, makes described circuit breaker actuating mechanism produce the action of opening circuit.
In order to prevent circuit breaker automatic closing in the situation that does not unusually have to get rid of, described automatic switching-in control unit also comprises:
One from the lock control subelement, it is connected with described motor action control subelement, receive described short circuit detecting subelement output one and characterize the self-locking control signal of short-circuit state, thereby make described motor action control subelement make described motor not produce action.
In order to realize Long-distance Control so that such as the use of the functions such as pre-payment, also comprise: an external control unit, it is connected with described motor action control subelement with described dropout subelement respectively, and receives external control signal, thereby described release and motor are produced control action.
Wherein, described short circuit circuit for detecting comprises: a short circuit detecing element that arranges for a phase line at least, it is connected with a judgment component, described judgment component produces described self-locking control signal and described dropout control signal according to the state of described short circuit detecing element under the abnormal conditions that are short-circuited.
Abnormal conditions for excess Temperature also comprise: a temperature detection subelement, it detects the phase line 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: a detector unit that arranges for a phase line at least, it is connected with a judgment component, described judgment component produces described self-locking control signal and/or dropout control signal according to the state of described detector unit under the occurrence temperature abnormal conditions.
In order to prevent that motor movement from producing infringement after exceeding certain position, also comprise: a spacing subelement, behind described breaker closing, send control signal to described motor action control subelement, make motor stalling.
One of embodiment of described spacing subelement is that described spacing subelement comprises: a photoelectrical coupler, and it is behind breaker closing, and its output produces a state variation, and it is passed to described motor action control subelement, makes motor stalling.
Beneficial effect of the present invention is compared with the prior art, can realize the automatic closing of circuit breaker, can when occuring such as the unusual electricity consumption situation such as short circuit or excess Temperature, circuit breaker be disconnected, and in the situation that does not unusually have to get rid of, can automatic closing, being applicable to the Long-distance Control of circuit breaker, is the basic product of intelligent grid development.
Description of drawings
Fig. 1 is the exploded view of existing circuit breaker;
Fig. 2 is the front view that the present invention has the built-in B type intelligent circuit breaker of automatic switching-in function;
Fig. 3 A is the front view after built-in B type intelligent circuit breaker automatic closing machine assembly embodiment one that the present invention has an automatic switching-in function takes off loam cake;
Fig. 3 B is the three-dimensional exploded view that the present invention has the built-in B type intelligent circuit breaker automatic closing machine assembly embodiment one of automatic switching-in function;
Fig. 4 A is the front view after built-in B type intelligent circuit breaker automatic closing machine assembly embodiment two that the present invention has an automatic switching-in function takes off loam cake;
Fig. 4 B is the front view after built-in B type intelligent circuit breaker automatic closing machine assembly embodiment two that the present invention has an automatic switching-in function takes off loam cake;
Fig. 5 A is the control section circuit automatic closing control subelement schematic diagram one of the built-in B type intelligent circuit breaker of the present invention with automatic switching-in function;
Fig. 5 B is the control section circuit automatic closing control subelement schematic diagram two of the built-in B type intelligent circuit breaker of the present invention with automatic switching-in function;
Fig. 5 C is the control section circuit automatic closing control subelement schematic diagram three of the built-in B type intelligent circuit breaker of the present invention with automatic switching-in function;
Fig. 5 D is the control section circuit automatic closing control subelement schematic diagram four of the built-in B type intelligent circuit breaker of the present invention with automatic switching-in function;
Fig. 5 E is the control section circuit automatic closing control subelement schematic diagram five of the built-in B type intelligent circuit breaker of the present invention with automatic switching-in function;
Fig. 5 F is the control section circuit automatic closing control subelement schematic diagram six of the built-in B type intelligent circuit breaker of the present invention with automatic switching-in function;
Fig. 5 G is the control section circuit automatic closing control subelement schematic diagram seven of the built-in B type intelligent circuit breaker of the present invention with automatic switching-in function;
Fig. 5 H is that the automatic closing control subelement of the built-in B type intelligent circuit breaker of the present invention with automatic switching-in function is realized reciprocating motion control circuit schematic diagram to motor.
Embodiment
Below in conjunction with accompanying drawing, be described in more detail with other technical characterictic and advantage the present invention is above-mentioned.
See also shown in Figure 2, it has the front view of the built-in B type intelligent circuit breaker of automatic switching-in function for the present invention, described built-in B type intelligent circuit breaker with automatic switching-in function comprises a breaker body, described breaker body comprises a box body, box body is to be made of a loam cake 11, a loading plate 10 and a under casing 12, described under casing 12 is provided with inlet wire port 115 and outlet port 113, in order to realize the access of described phase line and zero line and to pick out; All be provided with vertical division board between each inlet wire (phase line, zero line) and separate, and be connected with the inlet wire sheet metal inner.
Described circuit breaker actuating mechanism is to comprise: poke rod 114, and the linkage unit that is connected with poke rod 114, the hinged acting arm that is provided with in one gangbar lower end of described linkage unit, when linkage unit under the effect of poke rod 114 rotates, thereby driving described acting arm rotates, moving contact on the described acting arm is contacted with fixed contact on the described static contact, described static contact is connected with leading-out terminal on the described under casing, thereby realizes electric current is spread out of (this is prior art);
Described built-in B type intelligent circuit breaker with automatic switching-in function is comprised of mechanical part and control section, for automatic switching-in function, can think to be comprised of automatic closing machine assembly and automatic switching-in control unit.The present invention has the built-in B type intelligent circuit breaker of automatic switching-in function, it comprises: a breaker body, described breaker body comprises: box body, be provided with circuit breaker actuating mechanism in the described box body, and end of incoming cables 115 and leading-out terminal 113, described circuit breaker actuating mechanism realizes triggering by the poke rod that is positioned at described box body.
See also shown in Fig. 3 A and Fig. 3 B, it is respectively front view and three-dimensional exploded view after built-in B type intelligent circuit breaker automatic closing machine assembly embodiment one that the present invention has an automatic switching-in function takes off loam cake; Described built-in B type intelligent circuit breaker with automatic switching-in function comprises: a loading plate 10, described loading plate 10 is arranged between described loam cake 11 and the under casing 12, described loading plate 10 offers the opening 101 corresponding with described short slot 111, and is provided with the chute 214 of opposing parallel in the both sides of described opening 101;
Described automatic closing machine assembly comprises: motor 215 and intermediate transmission mechanism, described intermediate transmission mechanism places on the described loading plate 10, described intermediate transmission mechanism comprises: a pinion and rack and a clicking section 43, and described clicking section 43 is connected with described poke rod 114; Be provided with a motor 215 in the described under casing 12, it is under the control of an automatic switching-in control unit, described pinion and rack is converted into the reciprocating action of described clicking section 43 with the rotation of described motor 215, switches between open/close state from making described poke rod 114.
Described clicking section 43 is a framework, and described poke rod 114 passes in the middle of described framework 43, and described framework 43 both sides are provided with the slide rail that can move along described chute 214.
Described pinion and rack comprises:
One tooth bar 41, it combines with described framework 43, can drive framework 43 reciprocating motions;
One first gear 42, it is arranged on the described loading plate 10, and is meshed with described tooth bar 41, and described motor 215 output shafts are connected with described the first gear 42;
Be provided with at least one guide and limit groove on described framework 43 flanks, described gathering sill is for longitudinally; Better, also comprise: one speed reducer, it is arranged on the output shaft of described motor 215, then the output shaft of described decelerator and described the first gear 42 Joints.
Better, be provided with safety check switch 32 at described loam cake 11, it is corresponding with blocking switch on the described automatic switching-in control unit, uses when maintenance, prevents at motor 215 effect breaker closings.
Better, be provided with some status indicator lamps 31 at described circuit control panel 3, after described loam cake 11 is installed, with to reserve open-work on the loam cake 11 corresponding.
12 also are provided with a release 15 at the bottom of the described case, the motion end of described release 15 is connected with a gangbar of described linkage unit by connecting rod, on described release 15 obtains from described circuit control panel 3 during the control signal of corresponding control circuit; Produce the action of threading off, namely the motion end of described release 15 promotes described gangbar action, thereby described moving contact is separated with described fixed contact.Described release 15 is an electromagnet, and described motion end is its armature end.
Be short-circuited or during the abnormal conditions such as overcurrent, better, can also comprise a mechanical automatic locking mechanism, comprising: a gag lever post 2171, described gag lever post 2,171 one ends are provided with a crook, it is hooked in the groove that arranges on the axial gangbar, described axial gangbar can swing, and lean mutually with a linkage block of described linkage unit, the other end of described gag lever post 2171 can be stretched out by the hole 1111 that arranges on the described loam cake 11 (be at least align with above-mentioned hole 1111 and do not stretch out); Described gag lever post 2171 middle parts are provided with a groove, and a fixture 2172 is from following and described loam cake 11 concrete mutuallies, and pass described groove, are provided with back-moving spring in the described groove; When unusual condition occurring, described release action, touching described axial gangbar rotates, thereby force a linkage block of described linkage unit to be rotated, and then described moving contact is separated with fixed contact, this moment described gag lever post 2171 crook, from described groove, skid off, owing to be provided with action of reset spring in the described groove, described gag lever post 2171 moves upward, and stretches out from the hole 1111 of described loam cake, and described crook leans on described axial gangbar, thereby it can not be resetted, namely form self-locking.In this case, the indicative function that the gag lever post 2171 that stretches out also plays proves, present circuit breaker off state is by unusually causing, if want to close a floodgate will be artificial the gag lever post that will stretch out 2171 by bar 2173 by going back, make described crook from new embedded groove, thereby realize release.
Certainly above-mentioned is the self-locking of machinery, if adopt the self-locking of electronics, has not then usually needed artificially release, convenient and timely.
See also shown in Fig. 4 A and Fig. 4 B, it is respectively front view and three-dimensional exploded view after built-in B type intelligent circuit breaker automatic closing machine assembly embodiment two that the present invention has an automatic switching-in function takes off loam cake; Itself and embodiment one get difference and are, have adopted the secondary gear kind of drive here, also comprise one second gear 45, and described the second gear 45 is located on the described loading plate 10, and is meshed with described the first gear 42.Wherein be arranged in the described motor 215 and described the second gear 45 Joints of under casing 12.
See also shown in Fig. 5 A, it has the automatic switching-in control unit schematic diagram one of the built-in B type intelligent circuit breaker of automatic switching-in function for the present invention, present embodiment is as an example of three-phase example, 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 the phase line current, adopts three diode D1 ~ D3 to be connected with phase line A ~ C respectively here, and adopts capacitor C 3 to carry out filtering;
One voltage stabilizing circuit, it comprises: capacitor C 1, the C2 of a voltage-stabiliser tube DW1 and with it parallel connection, the minus earth of wherein said capacitor C 1, 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 the action of opening circuit; It comprises an electromagnet, and the end of its solenoid TQXQ obtains a unidirectional voltage (electric current) from described power acquisition collector, and its other end is provided with a capacitor C 4 by a controllable silicon SCR ground connection between described controllable silicon SCR control end and the ground;
One short circuit circuit for detecting, whether it has short circuit to occur in order to detect, when being short-circuited, export a control signal, described short circuit circuit for detecting 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 unusual being short-circuited, Sb, Sc is example), described decision element (adopting comparator IC1-1 ~ IC1-3 here is example) obtains a variable quantity by described short circuit detecing element place and compares with a predefined benchmark, (both quantity is consistent with the phase line number), described tongue tube Sa, Sb, the 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; Obtain by a component piezoresistance R3, R4 in the present embodiment, wherein, the end of described divider resistance R3 is connected with capacitor C 1 negative electrode in the described voltage stabilizing circuit, and the other end is connected with the output of described power acquisition collected works unit; Be provided with diode D7, D10, D13 between the output of each comparator IC1-1 ~ IC1-3 and the positive terminal; Tongue tube Sa, the Sb of described each short-circuit detecting circuit, Sc are connected with the control end of described controllable silicon SCR by a diode D5, D9, D12, in order to export the dropout control signal to described controllable silicon SCR;
One from the lock control subelement, and it receives the signal of sign short-circuit state of the output of described short circuit detecting subelement, thereby makes described motor not produce action; It comprises: one first triode Q2, the collector electrode of described the first triode Q2 is connected with the output of described power acquisition collected works unit, the grounded emitter of described the first triode Q2, one pull-up resistor R5 obtains the output signal of described comparator IC1-1 ~ IC1-3, and there is the base stage of described the first triode Q2 to be connected, and described base stage is connected to the ground by resistance R 6, is connected with a resistance R 7 between the emitter and collector of described the first triode Q2;
One motor automatic closing control subelement, it comprises: one second triode Q1, the base stage of described the second triode Q1 is connected with the collector electrode of described the first diode Q2, the grounded emitter of described the 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 described the second triode Q1;
Better, for mechanical structure in the result match, be provided with limit switch K1 at the circuit of described motor automatic closing control subelement, reach stall behind the precalculated position in order to control motor M, thereby guarantee the breaker closing position;
The better circuit at described motor automatic closing control subelement is provided with an artificial inspection switch K3(who opens and closes and is also referred to as locking), namely when this K switch 3 was in off-state, described motor M can not moved under any state;
Also comprise: a dropout subelement reset circuit, it comprises: a reset key REST, its first end is connected with the control end of described controllable silicon SCR, its second end ground connection;
The better output at described comparator IC1-1 ~ IC1-3 is provided with a LED a, LEDb, LEDc, in order to play indicative function.
See also shown in Fig. 5 B, it has the automatic closing control subelement schematic diagram two of the built-in B type intelligent circuit breaker of automatic switching-in function for the present invention, this schematic diagram must be distinguished with schematic diagram one and be, increased the external control subelement, its purpose can satisfy the needs such as the prepaid fee power management system, described external control subelement comprises: be provided with a unidirectional current element, such as diode D16, and control element, described control element comprises that namely the control to the dropout subelement also comprises the control of the motor automatic closing being controlled subelement, described automatic closing control subelement comprises: one the 3rd triode Q4, its base stage receives the external control signal, be connected with a capacitor C 5 between its emitter and collector, the wherein grounded emitter of the negative electrode of capacitor C 5 and described the 3rd triode Q4, the collector electrode of described the 3rd triode Q4 is connected with the control end of described controllable silicon SCR by a diode D15; Be in the situation of high potential at the external control signal namely, described release does not produce the action of threading off; One the 4th triode Q3, described the 4th triode Q3(PNP type) emitter and collector is arranged on the described motor M automatic closing control subelement circuit, the base stage of described the 4th triode Q3 is connected with the collector electrode of described the 3rd triode Q4, be in the situation of high potential at the external control signal namely, described the 4th triode Q3 is conducting; Be in the situation of electronegative potential at described external control signal, described dropout subelement produces the action of threading off, and described the 4th triode Q3 is in cut-off state simultaneously, i.e. motor automatic closing control subelement can not move.
The better external control indicating circuit that also is provided with, it comprises: light-emitting diodes LED pipe, one end ground connection, the other end is connected with a resistance R 11, and when the external control signal was high voltage, it was in illuminating state, otherwise then extinguished.
See also shown in Fig. 5 C, it has the automatic closing control subelement schematic diagram three of the built-in B type intelligent circuit breaker of automatic switching-in function for the present invention, the difference of present embodiment and above-mentioned schematic diagram one mainly is, it has increased a spacing subelement accordingly, and do not adopt limit switch, thereby saved the space; Described spacing subelement comprises: a photoelectrical coupler IC, the 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, the output head grounding of described photoelectrical coupler IC, another output is connected with the base stage of described the second triode Q1; Namely after described motor M realizes automatic closing, the output output electronegative potential of described photoelectrical coupler IC, thereby described the second triode Q1 is ended because base stage obtains electronegative potential, and then make described motor M automatic closing control subelement open circuit final motor stalling.
See also shown in Fig. 5 D, it has the automatic closing control subelement schematic diagram four of the built-in B type intelligent circuit breaker of automatic switching-in function for the present invention, the difference of present embodiment and above-mentioned schematic diagram one mainly is, present embodiment is to detect for overcurrent, therefore do not using tongue tube Sa, Sb, Sc but adopt the current acquisition element, that adopt here is current transformer TAa, Tab, Tac, it is separately positioned on each phase line, and be converted into voltage signal, be transferred to described comparator IC1-1 ~ IC1-3, described comparator IC1-1 ~ IC1-3 not only is transferred to described self-locking and automatic combined floodgate control subelement with the signal of output simultaneously, simultaneously it is transferred to the control end of the controllable silicon SCR of described dropout subelement, namely when the generation overcurrent is unusual, described comparator IC1-1 ~ IC1-3 output high potential signal is given the control end of described controllable silicon SCR, thereby make it produce the action of threading off, need to prove that the reference voltage of end of oppisite phase of described comparator IC1-1 ~ IC1-3 is owing to adopted slide rheostat w, so the threshold value of overcurrent comparison is adjustable.
See also shown in Fig. 5 E, it has the automatic closing control subelement schematic diagram five of the built-in B type intelligent circuit breaker of automatic switching-in function for the present invention, the difference of present embodiment and above-mentioned schematic diagram one mainly is, it has increased a temperature detection subelement accordingly, in order to reach in temperature in the situation of certain threshold value, described circuit breaker is opened circuit, and motor is produced auto-lock function; Described temperature detection subelement comprises: a detector unit that arranges for a phase line at least (here to adopt temperature sensor ta, tb, tc as example), it is connected with a judgment component (here to adopt comparator IC1-1 ~ IC1-3 as example), described judgment component is according to the state of described detector unit under the occurrence temperature abnormal conditions, produce a self-locking control signal and dropout control signal at least one of them.It is consistent with the phase line number specifically to be provided with the quantity of three groups of temperature sensor ta, tb, tc and comparator IC2-1 ~ IC2-3(for this enforcement), the 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; Obtain by a component piezoresistance R2, R3 in the present embodiment, wherein, the end of described divider resistance R2 is connected with capacitor C 1 negative electrode in the described voltage stabilizing circuit, the other end be connected with the output of described power acquisition collected works unit (sharing with described short circuit self-locking subelement); Be provided with diode D22, D19, D16 between the output of each comparator IC2-1 ~ IC2-3 and the positive terminal; Described temperature detection subelement is connected with the control end of described controllable silicon SCR by a diode D21, D17, D14, in order to export the dropout control signal to described controllable silicon SCR; The better output at described comparator IC2-1 ~ IC2-3 also arranges a LED Ta ~ LEDTb in order to play indicative function.
See also shown in Fig. 5 F, it has the automatic closing control subelement schematic diagram six of the built-in B type intelligent circuit breaker of automatic switching-in function for the present invention, present embodiment is to match with the self-locking of opening circuit of above-mentioned machinery, therefore on the structure of circuit, mainly be with the difference of above-mentioned schematic diagram two, here no longer be provided with short circuit detecting unit and self-locking and automatic combined floodgate control subelement, but only adopt mechanical self-latching namely to be presented as that from circuit the form of short circuit lock K4 reaches purpose of the present invention.
See also shown in Fig. 5 G, it has the automatic closing control subelement schematic diagram seven of the built-in B type intelligent circuit breaker of automatic switching-in function for the present invention, this schematic diagram has embodied in existing control technology realizes an intelligentized example by processor, wherein, by current transformer TAa, TAb, TAc is from power line A, B, obtain the current value on every phase line on the C, and by an analog to digital conversion circuit, be converted to corresponding digital signal, be transferred to described processor MCU, the program of presetting in the described processor MCU, can judge the power information of obtaining, judge the abnormal problems such as overcurrent/short circuit, thereby export corresponding control signal; An analog power circuit, it is comprised of divider resistance R1 ~ R6, obtains magnitude of voltage to described analog to digital conversion circuit from every phase line; One digital power circuit, after obtaining power supply signal by voltage transformer BT from power line, after the processing through 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, thereby in maintenance, avoid causing accident because of the unreasonable control of processor MCU; 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, has described processor MCU to judge and exports a control signal when temperature exceeds a threshold value; One current rectifying and wave filtering circuit is comprised of three diode D1 ~ D3 and capacitor C 2 resistance R 8, it provides the power supply supply for a release TQXQ, mouthful coil that takes off 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 mode and other the communication equipment of wire/wireless, thereby can receive the control signal (pre-payment combined floodgate/power-off signal) of outer end; One memory is in order to store the every data in the circuit breaker; One display circuit is in order to showing the detected various state informations of circuit breaker, is provided with corresponding display screen at the box body of circuit breaker; One clock circuit and a keyboard circuit, it is respectively in order to provide clock signal and input command to described processor MCU; It is a variety of that these functional circuits described above say that from specific implementation corresponding circuit has, and all is well-known, and those skilled in the art can specifically select as required, are not just giving unnecessary details here; Output PX.1, the PX.2 of described processor MCU in order to top embodiment in be connected from the lock control subelement, and then the action of control motor automatic closing control subelement, also can be direct be connected motor automatic closing control subelement and connect, whether removed according to present electricity exception situation by described processor MCU, determine whether the action that need to allow described automatic closing control subelement.
See also shown in Fig. 5 H, its automatic closing control subelement that has the built-in B type intelligent circuit breaker of automatic switching-in function for the present invention is realized reciprocating motion control circuit schematic diagram to motor, in this schematic diagram, the triode Q5 that four groups of PNP are arranged, Q6, Q8, Q9 and protection diode D10, D11, D13, D14, its collector electrode is connected with the anode of protection diode, the negative electrode of its emitter and diode is connected, and the positive terminal of motor is connected with the triode Q6 of two groups of PNP, Q9 and protection diode D11, the D14 collector electrode, and two groups between emitter link together; The end of oppisite phase of described motor is connected with triode Q5, the Q8 of other two groups of PNP and protection diode D10, D13 collector electrode, and two groups between emitter link 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 be connected with processor one control end PX.1 (seeing also 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 utmost point 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; Described PNP triode Q6 base stage is connected with described PNP triode Q4 collector electrode simultaneously.By the output signal of processor control end PX.1 and PX.2, thus the rotating of control motor, thus realize the reciprocating motion of corresponding actions mechanism.
The above only is preferred embodiment of the present invention, only is illustrative for the purpose of the present invention, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes to it in the spirit and scope that claim of the present invention limits, revise, even equivalence, but all will fall within the scope of protection of the present invention.
Claims (18)
1. built-in B type intelligent circuit breaker with automatic switching-in function is characterized in that it comprises:
One box body is provided with circuit breaker actuating mechanism in the described box body, and end of incoming cables and leading-out terminal, and described circuit breaker actuating mechanism realizes triggering by a poke rod that is positioned at described box body;
Also comprise: a loading plate, it is positioned at described box body, is provided with a pinion and rack and a clicking section on the described loading plate, and described clicking section is connected with described poke rod;
Be provided with a motor in the described box body, it is under the control of an automatic switching-in control unit, described pinion and rack is converted into the reciprocating action of described clicking section with the rotation of described motor, triggers the logical and disconnected of described circuit breaker actuating mechanism realization circuit breaker thereby promote described poke rod.
2. the built-in B type intelligent circuit breaker with automatic switching-in function according to claim 1 is characterized in that, described loading plate offers an opening, is provided with the chute of opposing parallel in the both sides of described opening;
Described clicking section is a framework, and described poke rod passes in the middle of described framework, and described framework both sides are provided with the slide rail that can move along described chute.
3. the built-in B type intelligent circuit breaker with automatic switching-in function according to claim 2 is characterized in that, described pinion and rack comprises:
One tooth bar, it combines with described framework, can drive the framework reciprocating motion;
One first gear, it is arranged on the described loading plate, and is meshed with described tooth bar.
4. the built-in B type intelligent circuit breaker with automatic switching-in function according to claim 3 is characterized in that, also comprises one second gear, and described the second gear is located on the described loading plate, and is meshed with described the first gear.
5. according to claim 2 or 3 described built-in B type intelligent circuit breakers with automatic switching-in function, it is characterized in that,
Be provided with at least one guide and limit groove on the described framework flank; At least one guide limiting stopper that is arranged at described tooth bar flank, it is corresponding with described guide and limit groove.
6. according to claim 2 or 3 described built-in B type intelligent circuit breakers with automatic switching-in function, it is characterized in that also comprise: one speed reducer, it is arranged on the output shaft of described motor.
7. the built-in B type intelligent circuit breaker with automatic switching-in function according to claim 1 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 and process;
One Electric Machine Control subelement obtains described electric power signal, and when receiving the combined floodgate order, makes described motor action, realizes that finally described circuit breaker actuating mechanism produces feed motion.
8. the built-in B type intelligent circuit breaker with automatic switching-in function according to claim 7 is characterized in that, described automatic switching-in control unit also comprises:
One short circuit circuit for detecting, whether it has short circuit to occur in order to detect, and produces a dropout control signal when being short-circuited;
One dropout subelement in order to when receiving described dropout control signal, makes described circuit breaker actuating mechanism produce the action of opening circuit.
9. the built-in B type intelligent circuit breaker with automatic switching-in function according to claim 8 is characterized in that, described automatic switching-in control unit also comprises:
One from the lock control subelement, and it is connected with described Electric Machine Control subelement, receives described short circuit circuit for detecting output one and characterizes the self-locking control signal of short-circuit state, thereby make described Electric Machine Control subelement make described motor not produce action.
10. the built-in B type intelligent circuit breaker with automatic switching-in function according to claim 9, it is characterized in that, also comprise: an external control unit, it is connected with described Electric Machine Control subelement with described dropout subelement respectively, and the reception external control signal, thereby described release and motor are produced control action.
11. the built-in B type intelligent circuit breaker with automatic switching-in function according to claim 10, it is characterized in that, described short circuit circuit for detecting comprises: a short circuit detecing element that arranges for a phase line at least, it is connected with a judgment component, described judgment component produces described self-locking control signal and described dropout control signal according to the state of described short circuit detecing element under the abnormal conditions that are short-circuited.
12. the built-in B type intelligent circuit breaker with automatic switching-in function according to claim 11, it is characterized in that, also comprise: a temperature detection subelement, it detects the phase line temperature, when described temperature reaches a threshold value, produce described self-locking control signal and/or dropout control signal.
13. the built-in B type intelligent circuit breaker with automatic switching-in function according to claim 12, it is characterized in that, described temperature detection subelement comprises: a detector unit that arranges for a phase line at least, it is connected with a judgment component, described judgment component produces described self-locking control signal and/or dropout control signal according to the state of described detector unit under the occurrence temperature abnormal conditions.
14. the built-in B type intelligent circuit breaker with automatic switching-in function according to claim 7, it is characterized in that, also comprise: a spacing subelement, behind described breaker closing, send control signal to described Electric Machine Control subelement, make motor stalling.
15. the built-in B type intelligent circuit breaker with automatic switching-in function according to claim 14, it is characterized in that, described spacing subelement comprises: a photoelectrical coupler, it is behind breaker closing, its output produces a state variation, and it is passed to described Electric Machine Control subelement, make motor stalling.
16. the built-in B type intelligent circuit breaker 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 default in the described processor or/and whether voltage exists unusually, and export accordingly control signal.
17. the built-in B type intelligent circuit breaker with automatic switching-in function according to claim 16 is characterized in that, also comprises: a display circuit or memory circuit or telecommunication circuit at least one of them, it is connected with described processor.
18. the built-in B type intelligent circuit breaker with automatic switching-in function according to claim 16 is characterized in that, also comprises: a keyboard circuit, it is connected with described processor, in order to order accordingly to described processor input.
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| CN 200910179378 CN101707166B (en) | 2009-09-29 | 2009-09-29 | Built-in B type intelligent circuit breaker with automatic closing function |
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| CN101707166B true CN101707166B (en) | 2013-04-10 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011038566A1 (en) * | 2009-09-29 | 2011-04-07 | 湖北盛佳电器设备有限公司 | Inner intelligent breaker and micro-breaker having function of automatic closing |
| JP5514318B2 (en) * | 2009-09-29 | 2014-06-04 | 湖北盛佳▲電▼器▲設備▼有限公司 | Intelligent circuit breaker with automatic switching-in function |
| CN101980350B (en) * | 2010-10-18 | 2014-06-11 | 湖北盛佳电器设备有限公司 | Miniature circuit breaker with position state detection function |
| CN110514946B (en) * | 2019-07-12 | 2021-11-23 | 国网浙江省电力有限公司嘉兴供电公司 | High-safety direct-current grounding test device |
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