CN101707165A - Built-in A type intelligent circuit breaker with automatic closing function - Google Patents
Built-in A type intelligent circuit breaker with automatic closing function Download PDFInfo
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- CN101707165A CN101707165A CN200910179260A CN200910179260A CN101707165A CN 101707165 A CN101707165 A CN 101707165A CN 200910179260 A CN200910179260 A CN 200910179260A CN 200910179260 A CN200910179260 A CN 200910179260A CN 101707165 A CN101707165 A CN 101707165A
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Abstract
The invention relates to a built-in A 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 a crank part and a stirring part, the 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, carry out circuit switches imperative equipment, and along with the release of country to the intelligent grid plan, it is an important direction that breaker apparatus need stride forward to the intelligence words.
See also shown in Figure 1, it is a 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 big switch, it all comprises: a box body, common box body is made up 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, 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 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 handle, thereby makes troubles to the user;
2, when occurrence temperature was crossed high unusual electricity consumption situation, the existing circuit breaker opening speed was slower;
3, under 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 above-mentioned defective, creator of the present invention is through research and practice have obtained this creation finally for a long time.
Summary of the invention
The objective of the invention is to, a kind of built-in A type intelligent circuit breaker with automatic switching-in function is provided, in order to overcome above-mentioned defective.
For achieving the above object, the technical solution used in the present invention is, a kind of built-in A type intelligent circuit breaker with automatic switching-in function is provided, it comprises: a breaker body, described breaker body comprises: a box body, be provided with circuit breaker actuating mechanism in the described box body, and end of incoming cables and leading-out terminal, described circuit breaker on-off action mechanism realizes triggering by the poke rod that is positioned at described box body;
Also comprise: a loading plate, described loading plate are arranged between described loam cake and the under casing, and described loading plate is provided with a crank portion and a clicking section, and described clicking section is connected with described poke rod;
Be provided with a motor in the under casing of described box body, it is under the control of an automatic switching-in control unit, and described crank portion is converted into the reciprocating action of described clicking section with the rotation of described motor, switches between open/close state from making described poke rod.
Can have at least dual mode to implement a kind of for described crank portion is that a ratchet and pawl arrangement and a connecting rod are formed; Another kind is that a ratchet and pawl arrangement and a push rod are formed.
Wherein, described loading plate offers an opening;
Described clicking section also has two kinds of execution modes at least, one of them described clicking section is a shift fork, and its middle part is located on the described loading plate, and described shift fork one end is provided with one group of mouth, described poke rod places described group of mouth, and the other end of described shift fork is provided with one and promotes mouth.
For the second way, 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, and described framework is provided with connecting hole.
For described ratchet and pawl arrangement dual mode has been arranged at least also, first kind comprises:
Overcoat, described outer tackling internal tooth, described internal tooth is a ratchet;
Fuse, described fuse are arranged in the described internal tooth, and the fuse outer rim is provided with at least one ratchet, are provided with flexible member between described ratchet and the described fuse, and wherein said ratchet is corresponding with described ratchet;
Rolling bearing is arranged between described overcoat and the fuse.
Second kind of described ratchet and pawl arrangement comprises:
Overcoat, described overcoat has internal tooth, and described internal tooth is a ratchet, in described overcoat biasing described push rod is arranged;
Fuse, described fuse are arranged in the described internal tooth, and the fuse outer rim is provided with at least one ratchet, are provided with flexible member between described ratchet and the described fuse, and wherein said ratchet is corresponding with described ratchet;
Rolling bearing is arranged between described overcoat and the fuse.
Mode for adopting the secondary transmission also comprises a gear, and described gear is located on the described loading plate, and the outer rim of described overcoat is provided with tooth, and described gear is meshed with described overcoat.
Another execution mode, comprise that also a disk is fixedly installed on described outer putting, described disk upper offset has a connecting hole, outer put the connecting hole of disk and the connecting hole of the framework on the clicking section links together by described connecting rod with described, drive described crank portion rotation thereby described motor is rotated, thereby make described connecting rod pulling/promotion described clicking section motion.
Another execution mode, described overcoat upper offset has a connecting hole, by described connecting rod the described outer connecting hole that puts and the connecting hole of the framework on the clicking section are linked together, drive described crank portion rotation thereby described motor is rotated, thereby make described connecting rod pulling/promotion described clicking section motion.
Another execution mode, described gear upper offset has a connecting hole, link together by the connecting hole of described connecting rod connecting hole on the described gear and the framework on the clicking section, drive described crank portion rotation thereby described motor is rotated, thereby make described connecting rod pulling/promotion described clicking section motion.
Preferable, also comprise: one speed reducer, it is arranged between the output shaft and described fuse of described motor.
Another execution mode, an adapting rod, one end are fixedly arranged on described overcoat middle part, are provided with a connecting hole at its other end, and described connecting rod is arranged between the connecting hole of the connecting hole of described adapting rod and described framework.
Described automatic switching-in control unit comprises:
One power supply is gathered subelement, and it obtains electric power signal from described phase line, and carries out rectifying and wave-filtering and handle;
One motor action control sub unit is obtained described electric power signal, and when receiving the combined floodgate order, makes described motor action, realizes that finally the described actuating mechanism that opens circuit 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 take place 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 the described actuating mechanism that opens circuit produce the action of opening circuit.
In order to prevent circuit breaker automatic closing under the situation that does not have unusually to get rid of, described automatic switching-in control unit also comprises:
One self-locking control sub unit, it is connected with described motor action control sub unit, 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 sub unit make described motor not produce action.
In order to realize Long-distance Control so that as the use of functions such as pre-payment, also comprise: an external control unit, it is connected with described motor action control sub unit with described dropout subelement respectively, and accepts 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 is provided with at 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.
At the too high abnormal conditions of 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 is provided with at 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 and give described motor action control sub unit, make the motor stall.
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 sub unit, makes the motor stall.
Beneficial effect of the present invention compared with the prior art is, can realize the automatic closing of circuit breaker, can take place as short circuit or temperature make the circuit breaker disconnection when crossing high unusual electricity consumption situation, and under the situation that does not have unusually 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 has the front view of the built-in A type intelligent circuit breaker of automatic switching-in function for the present invention;
The built-in A type intelligent circuit breaker automatic closing machine assembly embodiment one that Fig. 3 A has an automatic switching-in function for the present invention takes off the front view behind the loam cake;
Fig. 3 B has the three-dimensional exploded view of the built-in A type intelligent circuit breaker automatic closing machine assembly embodiment one of automatic switching-in function for the present invention;
The built-in A type intelligent circuit breaker automatic closing machine assembly embodiment two that Fig. 4 A has an automatic switching-in function for the present invention takes off the front view behind the loam cake;
The built-in A type intelligent circuit breaker automatic closing machine assembly embodiment two that Fig. 4 B has an automatic switching-in function for the present invention takes off the front view behind the loam cake;
The built-in A type intelligent circuit breaker automatic closing machine assembly embodiment three that Fig. 5 A has an automatic switching-in function for the present invention takes off the front view behind the loam cake;
The built-in A type intelligent circuit breaker automatic closing machine assembly embodiment three that Fig. 5 B has an automatic switching-in function for the present invention takes off the front view behind the loam cake;
The built-in A type intelligent circuit breaker automatic closing machine assembly embodiment four that Fig. 6 A has an automatic switching-in function for the present invention takes off the front view behind the loam cake;
The built-in A type intelligent circuit breaker automatic closing machine assembly embodiment four that Fig. 6 B has an automatic switching-in function for the present invention takes off the front view behind the loam cake;
The built-in A type intelligent circuit breaker automatic closing machine assembly embodiment five that Fig. 7 A has an automatic switching-in function for the present invention takes off the front view behind the loam cake;
The built-in A type intelligent circuit breaker automatic closing machine assembly embodiment five that Fig. 7 B has an automatic switching-in function for the present invention takes off the front view behind the loam cake;
The built-in A type intelligent circuit breaker automatic closing machine assembly embodiment six that Fig. 8 A has an automatic switching-in function for the present invention takes off the front view behind the loam cake;
The built-in A type intelligent circuit breaker automatic closing machine assembly embodiment six that Fig. 8 B has an automatic switching-in function for the present invention takes off the front view behind the loam cake;
Fig. 9 A has the automatic closing control sub unit schematic diagram one of the built-in A type intelligent circuit breaker of automatic switching-in function for the present invention;
Fig. 9 B has the automatic closing control sub unit schematic diagram two of the built-in A type intelligent circuit breaker of automatic switching-in function for the present invention;
Fig. 9 C has the automatic closing control sub unit schematic diagram three of the built-in A type intelligent circuit breaker of automatic switching-in function for the present invention;
Fig. 9 D has the automatic closing control sub unit schematic diagram four of the built-in A type intelligent circuit breaker of automatic switching-in function for the present invention;
Fig. 9 E has the automatic closing control sub unit schematic diagram five of the built-in A type intelligent circuit breaker of automatic switching-in function for the present invention;
Fig. 9 F has the automatic closing control sub unit schematic diagram six of the built-in A type intelligent circuit breaker of automatic switching-in function for the present invention;
Fig. 9 G has the automatic closing control sub unit schematic diagram seven of the built-in A type intelligent circuit breaker of automatic switching-in function for the present invention;
Fig. 9 H has the built-in A type intelligent circuit breaker of automatic switching-in function for the present invention automatic closing control sub unit realizes 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 A type intelligent circuit breaker of automatic switching-in function for the present invention, described built-in A 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, inserts and picks out in order to realize described phase line and zero line; 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 A type intelligent circuit breaker with automatic switching-in function is made up of mechanical part and control section, for automatic switching-in function, can think to be made up of automatic closing machine assembly and automatic switching-in control unit.The present invention has the built-in A type intelligent circuit breaker of automatic switching-in function, it comprises: a breaker body, described breaker body comprises: a box body, be provided with circuit breaker actuating mechanism in the described box body, and end of incoming cables and leading-out terminal, the poke rod 114 realization triggerings of described circuit breaker on-off action mechanism by being 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 A 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 A 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 opening 101, 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 place on the described loading plate 10, and it comprises: a crank portion and a clicking section, and described clicking section is connected with described poke rod 114; Be provided with described motor 215 in the described under casing 12, it is under the control of described automatic switching-in control unit, described crank portion is converted into the reciprocating action of described clicking section with the rotation of described motor 215, switches between open/close state from making described poke rod.
Crank portion described in the present embodiment is that a ratchet and pawl arrangement and a connecting rod are formed.Wherein said ratchet and pawl arrangement comprises: overcoat, and described overcoat has internal tooth, and described internal tooth is a ratchet, has a connecting hole on the card of described overcoat; Fuse, described fuse are arranged in the described internal tooth, and the fuse outer rim is provided with at least one ratchet, are provided with flexible member between described ratchet and the described fuse, and wherein said ratchet is corresponding with described ratchet; Rolling bearing is arranged between described overcoat and the fuse.
Described clicking section is a framework 211, and described poke rod 114 passes in the middle of described framework 211, and described framework 211 both sides are provided with the slide rail that can move along described chute 214, and described framework 211 is provided with connecting hole.Described connecting rod 212 places between the connecting hole of the connecting hole of described overcoat and described framework 211, and the output shaft of described motor 215 places in the axis hole of described fuse; Thereby when described motor 215 rotated, fuse drove overcoat and rotates, and moves along described chute 214 thereby make described connecting rod 212 pullings or promote described clicking section, and then described poke rod 114 is switched between open/close state.
Preferable, described loam cake 11 is provided with safety check switch 32, and it is corresponding with corresponding latch switch on the described automatic switching-in control unit, uses when maintenance, prevents at motor 215 effect breaker closings.
Preferable, described circuit control panel 3 is provided with some status indicator lamps 31, and after described loam cake 11 was installed, to reserve open-work corresponding with loam cake 11.
12 also are provided with a release 15 at the bottom of the described case, the motion end of described release is connected with a gangbar of described linkage unit by connecting rod, on described release obtains from described circuit control panel 3 during the control signal of correspondent control circuits, produce the action of threading off, the motion end that is described release promotes described gangbar action, thereby described moving contact is separated with described fixed contact. described release is an electromagnet, described motion end is its armature end, described release is provided with limit switch, when the armature end action of release, trigger described limit switch, described limit switch is connected with described circuit control panel 3;
Be short-circuited or during abnormal conditions such as overcurrent, preferable, can also comprise a mechanical self-latching 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 is provided with on the axial gangbar, described axial gangbar can be swung, and lean mutually with an interlock piece of described linkage unit, the other end of described gag lever post 2171 can be stretched out (be at least align with above-mentioned hole 1111 and do not stretch out) by the hole 1111 that is provided with on the described loam cake 11; 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 an interlock piece of described linkage unit to rotate, 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, promptly 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 causing unusually, 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 needed release artificially usually, 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 A type intelligent circuit breaker automatic closing machine assembly embodiment two that the present invention has an automatic switching-in function takes off loam cake; This enforcement gets difference with embodiment one and is, outside described, put the connecting hole that biasing no longer is set, but increased by an adapting rod 219, the one end is fixedly arranged on the described overcoat middle part, be provided with a connecting hole at its other end, described connecting rod 212 is arranged between the connecting hole of the connecting hole of described adapting rod 219 and described framework 211, and the output shaft of described motor 215 places in the axis hole of described fuse; Thereby when described motor rotates, fuse drives overcoat and rotates, move along described chute 214 thereby make described adapting rod 219 drive described connecting rod 212 pullings or promote described clicking section, and then described poke rod 114 is switched between open/close state.
See also shown in Fig. 5 A and Fig. 5 B, it is respectively front view and three-dimensional exploded view after built-in A type intelligent circuit breaker automatic closing machine assembly embodiment three that the present invention has an automatic switching-in function takes off loam cake; This enforcement gets difference with embodiment one and is, the connecting hole of biasing no longer is set on described overcoat 2131, but increased by a disk 2132, it is fixedly arranged on the described overcoat 2131, put a connecting hole in a lateral deviation of described disk 2132, described connecting rod 212 is arranged between the connecting hole of the connecting hole of described disk 2132 and described framework 211, and the output shaft of described motor 215 places in the axis hole of described fuse; Thereby when described motor 215 rotates, fuse drives overcoat 2132 and rotates, move along described chute 214 thereby make described disk 2132 drive described connecting rod 212 pullings or promote described clicking section, and then described poke rod 114 is switched between open/close state.
See also shown in Fig. 6 A and Fig. 6 B, it is respectively front view and three-dimensional exploded view after built-in A type intelligent circuit breaker automatic closing machine assembly embodiment four that the present invention has an automatic switching-in function takes off loam cake; This enforcement gets difference with embodiment three and is, also comprise a gear 218, described gear 218 is located on the described loading plate 10, and be connected with described motor 215 output shafts, the outer rim of described overcoat 2131 is provided with tooth, described gear 218 is meshed with described overcoat 2131. when described motor 215 rotates, driven gear 218 rotates, thereby driving overcoat 2131 rotates, and then make described disk 2132 drive described connecting rod 212 pullings or promote described clicking section to move along described chute 214, described poke rod 114 is switched between open/close state.
See also shown in Fig. 7 A and Fig. 7 B, it is respectively front view and three-dimensional exploded view after built-in A type intelligent circuit breaker automatic closing machine assembly embodiment five that the present invention has an automatic switching-in function takes off loam cake; This enforcement gets difference with embodiment three and is, transposing has taken place in the position of described ratchet and pawl arrangement and the position of gear, on described gear 2131, be set with disk 2132, described disk 2132 biasings have connecting hole, fuse and described motor Joint (in fact also can have connecting hole just not need disk 2132) at gear 2131 upper offsets, when described motor 215 rotates, thereby driving fuse rotates, fuse drives overcoat 210 and rotates, thereby driven gear 2131 rotates, and then make described disk 2132 drive described connecting rod 212 pullings or promote described clicking section to move along described chute 214, described poke rod 114 is switched between open/close state.
See also shown in Fig. 8 A and Fig. 8 B, it is respectively front view and three-dimensional exploded view after built-in A type intelligent circuit breaker automatic closing machine assembly embodiment six that the present invention has an automatic switching-in function takes off loam cake; Crank portion here and clicking section and above-mentioned five embodiment have had difference, described clicking section is a shift fork 211, its middle part is located on the described loading plate 10, described shift fork 211 1 ends are provided with one group of mouth, described poke rod 114 places described group of mouth, and the other end of described shift fork 211 is provided with one and promotes mouth.Overcoat 212 biasings for ratchet and pawl arrangement have a push rod 2123; When described motor 215 rotates, the drive fuse rotates, thereby driving overcoat 212 rotates, and then make described push rod 2123 promote described promotion mouth, bring into and make described shift fork 211 around described axle rotation, finally make at the poke rod 114 described in the described group of mouth and between open/close state, switch.
See also shown in Fig. 8 C, it is respectively the preferred version that built-in A type intelligent circuit breaker automatic closing machine assembly embodiment six that the present invention has an automatic switching-in function takes off the three-dimensional exploded view behind the loam cake; It compares with Fig. 8 A and Fig. 8 B, also comprises: one adjusts seat 2121, and it is fixedly arranged on described overcoat 2123 middle parts, is provided with short slots in the middle of the described adjustment seat 2121; One adjustment poke rod 61, the projection of its lower end is corresponding with described short slot, adjusts poke rod 61 by rotating, and drives described adjustment seat 2121 and is prolonging the rotation of ratchet non operating state with described overcoat 2123.Thereby can artificially manually circuit breaker poke rod 114 be stirred, described loam cake 11 is provided with a breach, and described adjustment poke rod 61 is stretched into by described breach; Here it is emphasized that the architectural characteristic owing to ratchet and pawl arrangement, above-mentioned several examples also can be realized such adjustment with reference to present embodiment six, thereby can realize artificially manually circuit breaker poke rod 114 being stirred, and have just repeated no more here.
See also shown in Fig. 9 A, it has the automatic switching-in control unit schematic diagram one of the built-in A type intelligent circuit breaker of automatic switching-in function for the present invention, present embodiment is example with the three-phase, described control circuit comprises: a power supply is gathered subelement, it obtains current signal from described phase line, described power supply collection subelement 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: a voltage-stabiliser tube DW1 and capacitor C 1, C2 in parallel with it, the minus earth of wherein said capacitor C 1, the output that its anodal and described power supply is gathered subelement is connected;
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 supply Acquisition Circuit, 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 take place 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 an 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, the output of gathering subelement with described power supply is connected, 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 that described power supply is gathered subelement; 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 self-locking control sub unit, 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 the described first triode Q2 is connected with the output that described power supply is gathered subelement, the grounded emitter of the described 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 the described first triode Q2 to be connected, and described base stage links to each other with ground by resistance R 6, is connected with a resistance R 7 between the emitter and collector of the described first triode Q2;
One motor automatic closing control sub unit, it comprises: one second triode Q1, the base stage of the described second triode Q1 is connected with the collector electrode of the described first diode Q2, the grounded emitter of the described second triode Q1; Described motor M one end is connected with the output that described power supply is gathered subelement, and the other end is connected with the collector electrode of the described second triode Q1;
Preferable, for mechanical structure in the result match, the circuit of described motor automatic closing control sub unit is provided with limit switch K1, reaches stall behind the precalculated position in order to the control motor M, thereby guarantees the breaker closing position;
The circuit of preferable described motor automatic closing control sub unit is provided with an artificial inspection switch K3 (being also referred to as locking) who opens and closes, and promptly 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 preferable 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. 9 B, it has the automatic closing control sub unit schematic diagram two of the built-in A 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 as the prepaid fee power management system, described external control subelement comprises: be provided with a unidirectional current element, as diode D16, and control element, described control element comprises that promptly the control to the dropout subelement also comprises the control to motor automatic closing control sub unit, described automatic closing control sub unit 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 under the situation of high potential at the external control signal promptly, described release does not produce the action of threading off; One the 4th triode Q3, the emitter and collector of described the 4th triode Q3 (positive-negative-positive) is arranged on the described motor M automatic closing control sub unit circuit, the base stage of described the 4th triode Q3 is connected with the collector electrode of described the 3rd triode Q4, be under the situation of high potential at the external control signal promptly, described the 4th triode Q3 is conducting; At described external control signal is under the situation of electronegative potential, and described dropout subelement produces the action of threading off, and described the 4th triode Q3 is in cut-off state simultaneously, and promptly motor automatic closing control sub unit can not moved.
The preferable 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. 9 C, it has the automatic closing control sub unit schematic diagram three of the built-in A 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 the described second triode Q1; Promptly after described motor M realizes automatic closing, the output output electronegative potential of described photoelectrical coupler IC, thereby the described second triode Q1 is ended because of base stage obtains electronegative potential, and then described motor M automatic closing control sub unit is opened circuit, final motor stall.
See also shown in Fig. 9 D, it has the automatic closing control sub unit schematic diagram four of the built-in A 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 at 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 sub unit with the signal of output simultaneously, simultaneously it is transferred to the control end of the controllable silicon SCR of described dropout subelement, promptly 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, the reference voltage of end of oppisite phase that need to prove 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. 9 E, it has the automatic closing control sub unit schematic diagram five of the built-in A 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 under 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 is provided with at a phase line is (here to adopt temperature sensor ta at least, tb, tc is an example), it is connected with a judgment component (being example to adopt comparator IC1-1～IC1-3 here), 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. specifically be provided with three groups of temperature sensor ta at this enforcement, tb, tc and comparator IC2-1～IC2-3 (both quantity is consistent with the phase line number), described temperature sensor ta, tb, the end of 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, the output of gathering subelement with described power supply is connected, 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 output that the other end and described power supply are gathered subelement be connected (shared 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 preferable output at described comparator IC2-1～IC2-3 also is provided with a LED Ta～LEDTb in order to play indicative function.
See also shown in Fig. 9 F, it has the automatic closing control sub unit schematic diagram six of the built-in A 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 sub unit, but only adopt mechanical self-latching promptly 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. 9 G, it has the automatic closing control sub unit schematic diagram seven of the built-in A 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 digital signal corresponding, be transferred to described processor MCU, the program of presetting in the described processor MCU, can judge the power information of obtaining, judge abnormal problems such as overcurrent/short circuit, thus the output control signal corresponding; An analog power circuit, it is made up of divider resistance R1～R6, obtains magnitude of voltage from every phase line and gives described analog to digital conversion circuit; 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 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 at each phase line node place, 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 made up 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 the 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 the every data in the storage circuit breaker; One display circuit is in order to show the detected various state informations of circuit breaker, and the box body of circuit breaker is provided with corresponding display screen; One clock circuit and keyboard circuit, it is respectively in order to provide clock signal and input command to described processor MCU; It is a variety of that above-mentioned described these functional circuits say that from specific implementation corresponding circuit has, and all is well-known, and those skilled in the art can specifically select for use as required, are not just giving unnecessary details here; Output PX.1, the PX.2 of described processor MCU is in order to be connected with self-locking control sub unit among the top embodiment, and then the action of control motor automatic closing control sub unit, also can direct and described motor automatic closing control sub unit be connected, whether whether removed according to present electricity exception situation by described processor MCU, judging needs to allow the action of described automatic closing control sub unit.
See also shown in Fig. 9 H, its automatic closing control sub unit that has the built-in A type intelligent circuit breaker of automatic switching-in function for the present invention realizes 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 limited, revise, even equivalence, but all will fall within the scope of protection of the present invention.
Claims (25)
1. built-in A 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 on-off action 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, and described loading plate is provided with a crank portion and a clicking section, and described clicking section is connected with described poke rod;
Be provided with a motor in the under casing of described box body, it is under the control of an automatic switching-in control unit, described crank portion is converted into the reciprocating action of described clicking section with the rotation of described motor, realizes the logical and disconnected of circuit breaker thereby make described poke rod trigger described circuit breaker actuating mechanism.
2. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 1 is characterized in that, described crank portion is that a ratchet and pawl arrangement and a connecting rod are formed.
3. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 1 is characterized in that, described crank portion is that a ratchet and pawl arrangement and a push rod are formed.
4. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 3 is characterized in that described loading plate offers an opening;
Described clicking section is a shift fork, and its middle part is located on the described loading plate, and described shift fork one end is provided with one group of mouth, and described poke rod places described group of mouth, and the other end of described shift fork is provided with one and promotes mouth.
5. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 2 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, and described framework is provided with connecting hole.
6. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 4 is characterized in that; Described ratchet and pawl arrangement comprises:
Overcoat, described outer tackling internal tooth, described internal tooth is a ratchet;
Fuse, described fuse are arranged in the described internal tooth, and the fuse outer rim is provided with at least one ratchet, are provided with flexible member between described ratchet and the described fuse, and wherein said ratchet is corresponding with described ratchet;
Rolling bearing is arranged between described overcoat and the fuse.
7. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 5 is characterized in that; Described ratchet and pawl arrangement comprises:
Overcoat, described overcoat has internal tooth, and described internal tooth is a ratchet, in described overcoat biasing described push rod is arranged;
Fuse, described fuse are arranged in the described internal tooth, and the fuse outer rim is provided with at least one ratchet, are provided with flexible member between described ratchet and the described fuse, and wherein said ratchet is corresponding with described ratchet;
Rolling bearing is arranged between described overcoat and the fuse.
8. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 6, it is characterized in that, also comprise a gear, described gear is located on the described loading plate, the outer rim of described overcoat is provided with tooth, and described gear is meshed with described overcoat.
9. according to claim 6 or 8 described built-in A type intelligent circuit breakers with automatic switching-in function, it is characterized in that, comprise that also a disk is fixedly installed on described outer putting, described disk upper offset has a connecting hole, outer put the connecting hole of disk and the connecting hole of the framework on the clicking section links together by described connecting rod with described, drive described crank portion rotation thereby described motor is rotated, thereby make described connecting rod pulling/promotion described clicking section motion.
10. according to claim 6 or 8 described built-in A type intelligent circuit breakers with automatic switching-in function, it is characterized in that, described overcoat upper offset has a connecting hole, by described connecting rod the described outer connecting hole that puts and the connecting hole of the framework on the clicking section are linked together, drive described crank portion rotation thereby described motor is rotated, thereby make described connecting rod pulling/promotion described clicking section motion.
11. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 8, it is characterized in that, described gear upper offset has a connecting hole, link together by the connecting hole of described connecting rod connecting hole on the described gear and the framework on the clicking section, drive described crank portion rotation thereby described motor is rotated, thereby make described connecting rod pulling/promotion described clicking section motion.
12. according to claim 4 or 6 or 8 described built-in A type intelligent circuit breakers with automatic switching-in function, it is characterized in that, also comprise: one speed reducer, it is arranged between the output shaft and described fuse of described motor.
13. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 6, it is characterized in that, one adapting rod, the one end is fixedly arranged on described overcoat middle part, be provided with a connecting hole at its other end, described connecting rod is arranged between the connecting hole of the connecting hole of described adapting rod and described framework.
14., it is characterized in that described automatic switching-in control unit comprises according to the described built-in A type intelligent circuit breaker of the arbitrary claim of claim 1-13 with automatic switching-in function:
One power supply is gathered subelement, and it obtains electric power signal from described phase line, and carries out rectifying and wave-filtering and handle;
One Electric Machine Control subelement obtains described electric power signal, and when receiving the combined floodgate order, makes described motor action, realizes that finally the described actuating mechanism that opens circuit produces feed motion.
15. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 14 is characterized in that, described automatic switching-in control unit also comprises:
One short circuit circuit for detecting, whether it has short circuit to take place 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 the described actuating mechanism that opens circuit produce the action of opening circuit.
16. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 15 is characterized in that, described automatic switching-in control unit also comprises:
One self-locking control sub unit, it is connected with described Electric Machine Control subelement, receives described short circuit detecting subelement 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.
17. according to claim 14,15 or 16 described built-in A type intelligent circuit breakers with automatic switching-in function, 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 accept external control signal, thereby described release and motor are produced control action.
18. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 17, it is characterized in that, described short circuit circuit for detecting comprises: a short circuit detecing element that is provided with at 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.
19. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 18, 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 a self-locking control signal and/or dropout control signal.
20. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 18, it is characterized in that, described temperature detection subelement comprises: a detector unit that is provided with at 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.
21. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 14, it is characterized in that, also comprise: a spacing subelement, behind described breaker closing, send control signal and give described Electric Machine Control subelement, make the motor stall.
22. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 21, 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 the motor stall.
23. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 14, it is characterized in that, also comprise: a processor, it is gathered subelement by an analog to digital conversion circuit and described power supply and is connected, 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 control signal accordingly.
24. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 23 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.
25. the built-in A type intelligent circuit breaker with automatic switching-in function according to claim 23 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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| CN200910179260A CN101707165B (en) | 2009-09-29 | 2009-09-29 | Built-in A type intelligent circuit breaker with automatic closing function |
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| CN200910179260A CN101707165B (en) | 2009-09-29 | 2009-09-29 | Built-in A type intelligent circuit breaker with automatic closing function |
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| CN101707165B CN101707165B (en) | 2012-09-26 |
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| CN101980350A (en) * | 2010-10-18 | 2011-02-23 | 湖北盛佳电器设备有限公司 | Miniature circuit breaker with position state detection function |
| WO2011038567A1 (en) * | 2009-09-29 | 2011-04-07 | 湖北盛佳电器设备有限公司 | Intelligent breaker with function of automatic closing |
| 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 |
| CN103176099A (en) * | 2013-03-01 | 2013-06-26 | 常熟理工学院 | Pre-closing main wire short-circuit detection sensing device for low-voltage circuit breakers |
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| FR2644303B1 (en) * | 1989-03-07 | 1991-05-24 | Gamet Gilbert | DEVICE FOR AUTOMATICALLY RESETTING CIRCUIT BREAKERS AND CIRCUIT BREAKERS EQUIPPED WITH SUCH A DEVICE |
| FR2899722B1 (en) * | 2006-04-05 | 2008-08-15 | Schneider Electric Ind Sas | ELECTRICAL DEVICE SWITCH WITH DEVICE FOR RETRACTING WEAR OF CONTACTS |
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| CN201655716U (en) * | 2009-09-29 | 2010-11-24 | 湖北盛佳电器设备有限公司 | Built-in A type intelligent circuit breaker with automatic closing function |
| CN201725754U (en) * | 2010-07-25 | 2011-01-26 | 王继杰 | A-type residual current operated circuit breaker of permanent magnetic electronic tripping device |
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| WO2011038567A1 (en) * | 2009-09-29 | 2011-04-07 | 湖北盛佳电器设备有限公司 | Intelligent breaker with function of automatic closing |
| 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 |
| CN101980350A (en) * | 2010-10-18 | 2011-02-23 | 湖北盛佳电器设备有限公司 | Miniature circuit breaker with position state detection function |
| CN103176099A (en) * | 2013-03-01 | 2013-06-26 | 常熟理工学院 | Pre-closing main wire short-circuit detection sensing device for low-voltage circuit breakers |
| CN103176099B (en) * | 2013-03-01 | 2015-05-13 | 常熟理工学院 | Pre-closing main wire short-circuit detection sensing device for low-voltage circuit breakers |
| CN105244237A (en) * | 2015-11-18 | 2016-01-13 | 国网冀北电力有限公司秦皇岛供电公司 | Electric leakage protector |
| CN108565826A (en) * | 2018-05-08 | 2018-09-21 | 深圳供电局有限公司 | Low-voltage release resetting device |
| CN108565826B (en) * | 2018-05-08 | 2024-08-16 | 深圳供电局有限公司 | Reset device of low-voltage release |
| CN109391033A (en) * | 2018-11-05 | 2019-02-26 | 福州博峰智能电器有限公司 | A kind of intelligent power distribution management system |
| CN114836727A (en) * | 2022-04-20 | 2022-08-02 | 广东振华科技股份有限公司 | System and method for detecting thickness of each layer of multilayer film system |
| CN114836727B (en) * | 2022-04-20 | 2024-04-09 | 广东振华科技股份有限公司 | System and method for detecting film thickness of each layer of multilayer film system |
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