CN207503893U - The external breaker of electric energy meter - Google Patents
The external breaker of electric energy meter Download PDFInfo
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- CN207503893U CN207503893U CN201721338371.6U CN201721338371U CN207503893U CN 207503893 U CN207503893 U CN 207503893U CN 201721338371 U CN201721338371 U CN 201721338371U CN 207503893 U CN207503893 U CN 207503893U
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Abstract
The utility model is related to Low Voltage Electrical Apparatus, and in particular to a kind of external breaker of electric energy meter, including breaker and driving device；The breaker includes input terminal and outlet terminal, it sets to detect the operating current signal of breaker and be transferred to the current transformer of driving device between input terminal and outlet terminal, driving device includes control circuit and the drive mechanism being connect with control circuit, control circuit is connected with the signal output end of the expense control module of electric energy meter, the signal output end of current transformer is connected with control circuit board, control circuit receives the sub-gate signal of expense control module, and when receiving the operating current of current transformer detection less than setting electric current, breaker open operation is driven by drive mechanism；The external breaker of electric energy meter of the utility model, the operating current of limiting circuit breaker, makes breaker continue combined floodgate work in limited conditions, ensures the basic electricity of user, can also limit the large current load operation of user.
Description
Technical field
The utility model is related to Low Voltage Electrical Apparatus, and in particular to a kind of external breaker of electric energy meter.
Background technology
Breaker generally has the structure of instruction contact closure and open position state, with the development of intelligent grid, no
Remote control signal is only needed to control breaker, it is also necessary to working condition residing for real-time monitoring breaker.
Wherein, the external breaker of electric energy meter then need to meet specific occasion or under the conditions of close a floodgate but do not feed back or feed back and is specific
Signal function, and the external breaker of existing electric energy meter cannot meet above-mentioned function.
For example, after subscriber arrearage, after the expense control module of electric energy meter makes breaker open operation, to ensure the basic electricity of user,
Breaker need to be allowed to close a floodgate again, and user load power supply is continued as under the premise of no more than setting power, and existing electricity
Can the expense control module of table can receive the breaker closing signal of feedback signal-i.e. of feedback circuit input, cause to go out in electric energy meter
Existing logical contradiction.
In practical operation, the setting power of above-mentioned breaker then shows as the setting electric current of breaker.After subscriber arrearage,
Breaker is allowed to continue to power for user load under the premise of no more than setting power, that is, after subscriber arrearage, breaker is again
After combined floodgate, operating current is less than setting electric current, then breaker can continue as customer power supply, and operating current is more than setting electricity
Stream, then breaker open operation, cuts off the power supply to user load.The existing device for being used to detect breaker operating current, is deposited more
Testing result is not accurate enough or device volume excessive the problems such as being not easy to install and using.
In addition, the wire connection terminal of the external breaker of electric energy meter is exposed to outer, easily occur to change without associated rights personnel disconnected
Road device wiring stealing or the situation of user misoperation breaker terminal also influence the Electrical Safety of user, are also unfavorable for electricity
The unified management of power department.
Invention content
The purpose of the utility model is to overcome the defects of the prior art, providing a kind of electric energy meter external breaker,
The operating current of limiting circuit breaker under qualifications, makes breaker continue combined floodgate work, ensures the basic electricity of user；Also it can be used
In the large current load operation of limitation user.
To achieve the above object, the utility model employs following technical solution：
A kind of external breaker of electric energy meter, including breaker 100 and for breaker 100 to be driven to close a floodgate/separating brake
Driving device 200；It is characterized in that：
The breaker 100 includes input terminal and outlet terminal, sets to examine between input terminal and outlet terminal
It surveys the operating current signal of breaker 100 and is transferred to the current transformer 103 of driving device 200, driving device 200 includes control
Circuit processed and the drive mechanism being connect with control circuit, control circuit are connected with the signal output end of the expense control module of electric energy meter,
The signal output end of current transformer 103 is connected with control circuit board 201, and control circuit receives the separating brake letter of expense control module
Number, and receive current transformer 103 detection operating current be less than setting electric current when, breaker is driven by drive mechanism
100 separating brakes.
Preferably, the current transformer measures the nominal operation that current range is less than breaker more than the setting electric current
Electric current.
Preferably, the breaker 100 further includes magnetictrip 105, and magnetictrip 105 is electrically connected with outlet terminal,
Current transformer 103 is arranged between magnetictrip 105 and outlet terminal.
Preferably, the control circuit includes microcontroller, signal processor and current threshold comparing unit, current threshold ratio
Signal input part and signal output end compared with unit are connected respectively with current transformer and microcontroller, and microcontroller passes through signal processing
Device is connected with electric energy meter, and microcontroller is connected with drive mechanism controls its action.
Preferably, the control circuit includes comparison circuit, two input terminals of comparison circuit respectively with current transformer
With setting electric current reference connection, the output terminal of comparison circuit is connected with microcontroller, and microcontroller is connected with drive mechanism.
Preferably, including control circuit board 201, the control circuit board 201 is equipped with control circuit and feedback circuit, feedback
Circuit includes the current-limiting resistance R0 and semiconductor switch of concatenation, and semiconductor switch is gone out by current-limiting resistance R0 and breaker 100
Line terminals are connected, and acquire the action signal of breaker 100, and the signal output end of semiconductor switch takes control module phase with electric energy meter
Even, input terminal and the control circuit of breaker 100 are electrically connected, and working power, control circuit and semiconductor switch phase are provided for it
Even, the ON/OFF of semiconductor switch is controlled.
Preferably, the drive mechanism includes the motor 206 being connect with control circuit, and motor 206 drives with driving gear set
Dynamic to be connected, driving gear set includes third transmission gear 2073, and third transmission gear 2073 drives with combined floodgate actuator 204, dropout
The driving of moving part 205 is connected, and combined floodgate actuator 204 and the operation handle of breaker 100 are connected；
The control circuit of the driving device 200 drives third transmission gear 2073 to be rotated to side by motor 206, band
Dynamic circuit connector lock actuator 204 makes the operation handle of breaker 100 swing the combined floodgate for realizing breaker 100；The control circuit passes through
Motor 206 drives third transmission gear 2073 to be rotated to opposite side, and dropout actuator 205 is driven to trigger breaker 100 and is threaded off reality
The separating brake of existing breaker 100.
Preferably, the input terminal and outlet terminal include terminal screw and wire frame；
The breaker further includes Shell of circuit breaker, Shell of circuit breaker setting wiring construction, input terminal and outlet terminal
It is separately positioned in different wiring mechanisms, wiring construction includes barrier structure, and barrier structure includes being arranged on wire connection terminal one
It the baffle slideway 6 of side and is inserted into baffle slideway 6 for blocking the screw baffle of terminal screw, screw baffle is slided with baffle
The Shell of circuit breaker part lead sealing connection of 6 inlet of road.
The external breaker of electric energy meter of the utility model, including current transformer, the control of current transformer and driving device
Wiring board processed is connected, and current transformer is used to detect the operating current signal of breaker and transmits a signal to control line circuit
Plate, if the operating current of breaker is less than setting electric current, breaker is normally powered for user load, if the work electricity of breaker
Stream is more than setting electric current, then control circuit board control breaker open operation, therefore in subscriber arrearage, if after breaker closing,
Operating current is less than setting electric current, that is to say, that when the power of user load is less than setting power, breaker is allowed to keep closing a floodgate
If after state breaker closing, operating current is more than setting electric current, that is to say, that the power of user load is more than setting power
When, control circuit board control breaker open operation both ensure that user's basic electricity demand after subscriber arrearage, can also warn
User's electricity payment as early as possible.The external breaker of electric energy meter of further the utility model can be also used for the big electricity of limitation user
The use of current load.In addition, the breaker includes wiring construction, wiring construction includes barrier structure, and barrier structure can block
The terminal screw of wire connection terminal can avoid the personnel of no associated rights from arbitrarily changing the wiring of breaker, and user is also avoided accidentally to grasp
Make wire connection terminal, ensure that the Electrical Safety of user, be managed collectively convenient for power department.
Description of the drawings
Fig. 1 is the structure diagram of the external breaker of the utility model electric energy meter；
Fig. 2 is the circuit diagram of the utility model feedback circuit；
Fig. 3 is the assembling structure schematic diagram of the utility model current transformer；
Fig. 4 is the structure diagram of the utility model barrier structure；
Fig. 5 is the structure diagram of the utility model screw baffle；
Fig. 6 is the schematic diagram that the utility model screw baffle pulls out state；
Fig. 7 is the schematic diagram of the utility model screw baffle insert state；
Fig. 8 is the module diagram of the external breaker of the utility model electric energy meter；
Fig. 9 is the structure diagram of the utility model driving device；
Figure 10 is another structure diagram of the utility model driving device；
Figure 11 is the third structure diagram of the utility model driving device
Figure 12 is the structure diagram of the utility model screw baffle slideway；
Figure 13 is the high-level schematic functional block diagram of the utility model control circuit；
Figure 14 is another structure diagram of the utility model screw baffle.
Specific embodiment
Below in conjunction with the embodiment that attached drawing 1 to 11 provides, the external breaker of electric energy meter of the utility model is further illustrated
Specific embodiment.The external breaker of electric energy meter of the utility model is not limited to the following description.
As shown in Fig. 1,2,8, the external breaker of electric energy meter of the utility model, including breaker 100 and for driving
Breaker 100 closes a floodgate/driving device 200 of separating brake, driving device 200 is connected with electric energy meter, and electric energy meter passes through driving device 200
Control breaker 100 carries out the/separating brake that closes a floodgate.
The breaker includes input terminal and outlet terminal, and electric energy meter includes taking control module, and driving device 200 includes control
Wiring board 201 processed and the drive mechanism being electrically connected with control circuit board 201, control circuit board 201 is equipped with control circuit and instead
Current feed circuit；The input terminal of the breaker 100 is electrically connected with control circuit, provides working power for it, control circuit is with taking control
Module is connected, and drive mechanism is connected with the driving of breaker 100, and the control signal of control circuit reception fee control module passes through transmission
Structure driving breaker 100 closes a floodgate/separating brake, and the signal input part of feedback circuit is connected with the outlet terminal of breaker 100, acquisition
Combined floodgate/sub-gate signal of the breaker 100 of the action signal of breaker 100-i.e., output terminal are connected with expense control module and by breakers
100 action signal is transferred to expense control module.
As shown in Fig. 2, the control circuit of the control circuit board 201 is connected with feedback circuit, the letter of feedback control circuit
The ON/OFF of number output terminal.After subscriber arrearage, electric energy meter take control module by driving device drive breaker open operation after,
For the basic electricity of guarantee user, breaker need to be allowed to continue combined floodgate work under the premise of no more than setting power, and it is existing
The breaker closing signal of feedback signal-i.e. for taking control module and receiving feedback circuit input of electric energy meter, leads to appearance in electric energy meter
Logical contradiction.The external breaker of electric energy meter of the utility model, the control circuit of control circuit board are connected with feedback circuit, and
Can be with the ON/OFF of the signal output end of feedback control circuit, it is expense control module feedback to allow feedback circuit selectivity
Breaker actuation signal, i.e.,：When user load power is no more than setting power, after breaker closing, control circuit control
The signal output end of feedback circuit disconnects, and feedback circuit cannot be to the switching signal for taking control module feedback breaker；When user bears
It is more than when setting power to carry power, and after breaker closing, the signal output end conducting of control circuit feedback control circuit is fed back
Circuit after expense control module receives the switching signal of breaker, passes through control to the switching signal for taking control module feedback breaker
Circuit control drive mechanism driving breaker open operation；The selective feedback system of the external breaker of electric energy meter of the utility model was both
It ensure that the basic electricity demand after subscriber arrearage, electric energy meter will not be made logical contradiction occur.
Preferably, as shown in Fig. 2, the feedback circuit includes current-limiting resistance R0 and that connects with current-limiting resistance R0 partly lead
Body switchs, and the control terminal of control circuit and semiconductor switch is electrically connected, and controls its ON/OFF.
Preferably, as shown in Fig. 2, the semiconductor switch is triode VT, the collector a poles of triode VT pass through current limliting
Resistance R0 and the outlet terminal of breaker 100 are electrically connected, and base stage b poles are electrically connected with control circuit, and emitter c poles are with taking control module phase
Even.It should be pointed out that according to the difference of triode-type, a poles and c poles of the triode VT can also be emitter respectively
And collector or other title.
Preferably, the semiconductor switch can also be silicon-controlled.
As shown in figure 3, the breaker 100 includes input terminal and outlet terminal, between input terminal and outlet terminal
It sets for detecting the operating current signal of breaker 100 and being transferred to the current transformer 103 of driving device 200, driving dress
Put 200 include for judge breaker 100 operating current whether be more than setting electric current control circuit and with control circuit connect
The drive mechanism connect, control circuit are connected with the signal output end of the expense control module of electric energy meter, current transformer 103 and control line
The control circuit of road plate 201 is connected, and control circuit receives the sub-gate signal of expense control module, and receives current transformer 103
When the operating current detected is less than setting electric current, 100 separating brake of breaker is driven by drive mechanism.In subscriber arrearage state
Under, the external breaker of electric energy meter of the utility model starts monitoring loop electricity consumption situation, when the operating current or use of breaker 100
When the power of family load is less than setting electric current or setting power, breaker 100 keeps "on" position to continue to power, and works as breaker
When 100 operating current or the power of user load are more than setting power, driving device makes breaker open operation, stops power supply.
That is when there is expense control signal (the non-arrearage of user), driving device 200 stops sampling or judges the defeated of current transformer 103
Enter signal, only without when taking control signal (subscriber arrearage), when user closes a floodgate again after breaker open operation, driving device 200 is opened
Begin to receive the input signal of current transformer 103 and be judged, when the operating current of breaker 100 is more than setting electric current,
Driving device 200 makes 100 separating brake of breaker, stops power supply, when the operating current of breaker 100 is less than setting electric current, open circuit
Device 100 keeps "on" position, continues to power, power after subscriber arrearage, to be allowed to be less than the user load of setting power just
It often uses, so as to ensure that the basic electricity after subscriber arrearage, and the timely electricity payment of user can be reminded.Further, institute
Current transformer and control circuit board cooperation are stated, the use of limitation large current load is can be also used for, to realize power department
Electric power resource is allocated.
Preferably, the current transformer measures the nominal operation that current range is less than breaker more than the setting electric current
Electric current uses just for the large current load in the case of arrearage, can greatly reduce current transformer volume, small-sized to meet
The miniature requirement of breaker.
As shown in figure 13, a kind of embodiment of control circuit is, the control circuit include microcontroller, signal processor and
Current threshold comparing unit, signal processor are connected with electric energy meter, connect suspension control signal and output feedback signal, Current Mutual Inductance
Device is connected with current threshold comparing unit, and the signal that current threshold comparing unit inputs current transformer judges, electric current
Threshold value comparison unit is connect with microcontroller, and microcontroller is connected with drive mechanism.Only when without take control signal, i.e. electric supply meter arrearage
In the case of, when operating current is more than setting electric current threshold value, microcontroller receives the signal of current threshold comparing unit and controls biography
Dynamic structure performs action, makes breaker open operation.The embodiment of another control circuit is, the control circuit include microcontroller and
Signal processor can not also include current threshold comparing unit, and signal processor be connected with electric energy meter, current transformer and
Microcontroller connects, and the signal that microcontroller inputs current transformer judges.
The embodiment of another control circuit is, the control circuit includes comparison circuit, the comparison circuit include than
Compared with device or comparable chip, two input terminals of comparison circuit compare respectively with current transformer and setting electric current reference connection
The output terminal of circuit is connected with microcontroller, and single-chip microcomputer output is connected with drive mechanism.
A kind of embodiment of control circuit is that the control circuit includes comparison circuit, and the comparison circuit includes comparing
Device or comparable chip, two output terminals of comparison circuit respectively with current transformer and setting electric current reference connection, in electric current
The control switch of semiconductor is additionally provided between mutual inductor and comparison circuit, the control terminal of switch is controlled to be connect with expense control module, than
Output terminal compared with circuit is connect with feedback circuit and drive mechanism, without setting microcontroller.Control circuit mainly realizes threshold value
Compare and whether the signal of arrearage with or logical process, it can be achieved that scheme it is more, those skilled in the art can be according to need
It asks and is designed and adjusts, it be not described in detail herein.
Preferably, as shown in figure 3, the breaker 100 further includes magnetictrip 105, magnetictrip 105 and open circuit
The outlet terminal of device 100 is electrically connected, and current transformer 103 is arranged between magnetictrip 105 and outlet terminal.
Preferably, the setting electric current≤5A.The operating current of the breaker 100 reaches current transformer after certain value
Core sataration, saturation current value be more than setting electric current and less than breaker 100 rated operational current.
As shown in Fig. 4-7 and 12, the breaker 100 further includes Shell of circuit breaker, and Shell of circuit breaker includes wiring construction,
Setting wire connection terminal in the middle part of wiring construction, wire connection terminal include input terminal and outlet terminal, and input terminal and outlet terminal are equal
Including terminal screw and wire frame, wiring construction further includes the barrier structure for blocking terminal screw, and guard mechanism includes gear
Plate slideway 6 and the screw baffle being inserted into baffle slideway 6, screw baffle include baffle operating side and baffle insertion end, gear
Plate operating side is connected with Shell of circuit breaker by lead sealing mode.The barrier structure can prevent lack of competence personnel reconfiguration open circuit privately
The wiring of device 100 and/or user misoperation terminal screw is avoided, be also beneficial to ensure the Electrical Safety of user, convenient for Electricity Department
The unified management of door.
As shown in figure 4, the breaker 100 includes Shell of circuit breaker, Shell of circuit breaker includes being separately positioned on the upper end
With the end of incoming cables wiring construction of lower end and leading-out terminal wiring construction, end of incoming cables wiring construction and leading-out terminal wiring construction are mutually symmetrical
Structure.
As shown in Fig. 4,6 and 7, the end of incoming cables wiring construction is including along breaker thickness of the shell direction, straight line divides from left to right
Two input terminals, the screw gathering hole being arranged on front side of input terminal and the inlet wire being arranged in the middle part of screw gathering hole of cloth
Barrier structure is held, end of incoming cables screw gathering hole includes being separately positioned on the first screw gathering hole 1051 on front side of two input terminals
With the second screw gathering hole 1052.The end of incoming cables barrier structure includes being arranged on the end of incoming cables in the middle part of the screw gathering hole of end of incoming cables
Baffle slideway and the end of incoming cables screw baffle 51 being inserted into inlet wire end-stopping plate slideway.
As shown in figure 5, the end of incoming cables screw baffle 51 is axially symmetric structure, including first baffle main body 510, axial direction
Left end and right end be first baffle operating side and first baffle insertion end respectively, first baffle operating side sets the first lead seal hole
511, the first anticreep boss 512 of first baffle insertion end downside setting.The end of incoming cables screw baffle 51 is axially symmetric structure, is made
It both can be used for end of incoming cables barrier structure, can be used for leading-out terminal barrier structure, advantageously reduce number of parts, save life
Produce cost.As shown in fig. 6-7, the inlet wire end-stopping plate slideway includes being arranged on the first anticreep block reinforcement on the left of its entrance and setting
Two protrusions 106 of the middle side part under inlet wire end-stopping plate slideway are put, the protrusion 106 in left side is arranged on inlet wire end-stopping plate chute inlet
Near, the gap between the protrusion 106 and the first anticreep block reinforcement is matched with the first anticreep boss 512, and the protrusion 106 on right side is set
Near inlet wire end-stopping plate slideway tail end.The first anticreep block reinforcement and the first anticreep boss 512 of end of incoming cables screw baffle 51
Cooperation, prevents end of incoming cables screw baffle 51 from being fallen from the inlet of inlet wire end-stopping plate slideway.As shown in fig. 6, in end of incoming cables screw
When baffle 51 is pulled out from inlet wire end-stopping plate slideway, 512 holding of the first anticreep boss is in the 106 and first anti-off-gear of protrusion in left side
Between muscle, end of incoming cables screw baffle 51 is located in shown position, is avoided when user screws terminal screw, end of incoming cables screw gear
The Slideslip to the right of plate 51, influences user's operation；As shown in fig. 7, after end of incoming cables screw baffle 51 is inserted into inlet wire end-stopping plate slideway,
First anticreep boss, 512 holding makes end of incoming cables screw baffle 51 be maintained at shown position, has on the right side of the protrusion 106 on right side
Lead sealing operation is carried out to the first lead sealing muscle at end of incoming cables screw baffle and inlet wire end-stopping plate chute inlet conducive to user.
Preferably, the embodiment of another terminals wiring construction is that the end of incoming cables wiring construction includes an inlet wire
Terminal and a screw gathering hole for being arranged on input terminal side, screw gathering hole are to be correspondingly arranged at connecing for input terminal
The pore structure of line screw side, screw gathering hole middle part setting end of incoming cables barrier structure, end of incoming cables barrier structure include being arranged on
Inlet wire end-stopping plate slideway in the middle part of the screw gathering hole of end of incoming cables and the end of incoming cables screw gear being inserted into inlet wire end-stopping plate slideway
Plate 51.As shown in figure 14, the end of incoming cables screw baffle 51 is axially symmetric structure, including first baffle main body 510, axial
Left end and right end are first baffle operating side and first baffle insertion end respectively, and first baffle operating side sets the first lead seal hole
511, two the first anticreep boss 512 of setting on the downside of first baffle insertion end, two the first anticreep boss 512 are symmetricly set on the
The both ends of width direction on the downside of one baffle insertion end.As shown in Figures 6 and 7, the inlet wire end-stopping plate slideway enters including being arranged on it
The first anticreep block reinforcement in mouth left side and the two rows of protrusions 106 being arranged on the downside of inlet wire end-stopping plate slideway, each row's protrusion 106 are equal
Including two protrusions 106, one of them is arranged near inlet wire end-stopping plate chute inlet, another is arranged on inlet wire end-stopping plate cunning
Near road tail end, two rows of protrusions 106 coordinate respectively with two the first anticreep boss 512 of end of incoming cables screw baffle 51.
Preferably, as shown in Fig. 4 and 12, setting the on the outside of the inlet wire end-stopping plate chute inlet of the end of incoming cables barrier structure
One lead sealing muscle, the first lead sealing muscle set the first lead sealing secondary orifices, user can by the first lead seal hole of end of incoming cables screw baffle 51 and
First lead sealing secondary orifices carries out lead sealing to end of incoming cables screw baffle 51 and the first lead sealing muscle, avoids lack of competence personnel by end of incoming cables screw
Baffle 51 pulls out, and operates the terminal screw of input terminal, also avoids user and carries out maloperation to the input terminal of breaker, just
In the unified management of power department.
It should be pointed out that the barrier structure of the utility model and not only limiting the use of in the external breaker of electric energy meter, other are needed
Wiring construction to be protected, such as wiring construction of the wiring construction of electric energy meter, residual current action breaker etc..
Preferably, as shown in figs. 9-11, the drive mechanism of the driving device 200 includes driving device pedestal, Yi Jishe
It puts the combined floodgate actuator 204 in driving device base interior, dropout actuator 205, motor 206 and is drivingly connected with motor 206
Driving gear set, driving device pedestal further includes the driving device cover coordinated with it, and driving gear set includes and motor 206
The first transmission gear 2071 of output shaft gear connection, the second transmission gear for being connect with 2071 gear of the first transmission gear
2072 and the third transmission gear 2073 that is connect with 2072 gear of the second transmission gear, control circuit and the electricity of control circuit board
Machine 206 is electrically connected, control motor 206 action realize forward, reverse or stop stops, third transmission gear 2073 by drive link 208 with
The driving of combined floodgate actuator 204 is connected, and third transmission gear 2073 is drivingly connected with dropout actuator 205, and combined floodgate actuator 4 is with breaking
The operating mechanism 104 of road device 100 links.
The driving device 200 drives the action process that breaker 100 closes a floodgate, and control circuit control motor 206 is rotated forward, driven
Dynamic third transmission gear 2073 is rotated to side, so as to drive the operating mechanism 104 that combined floodgate actuator 204 makes breaker 100 dynamic
Make the combined floodgate of realization breaker 100；Driving device 200 drives the action process of 100 separating brake of breaker, control circuit control motor
206 reversions, driving third transmission gear 2703 are rotated to opposite side, and third transmission gear 2703 turns to and dropout actuator
205 connect, and trigger the dropout of breaker 100 by dropout actuator 205 and realize 100 separating brake of breaker.The motor 206
Both direction opposite in the action process for referring to description driving switch closing and switch opening is rotated and reverse, is not implying that motor 206 just
Turn that third transmission gear 2703 is then driven to rotate counterclockwise, reversion then drives third transmission gear 2703 to rotate clockwise.It is described
Combined floodgate actuator 204 and dropout actuator 205 are driven by shared drive mechanism, realize combined floodgate/separating brake of breaker 100,
Its is simple in structure, simplifies the control structure of driving device 200, monolithic case size is small, especially suitable for the external open circuit of electric energy meter
Device, while combined floodgate actuator 204 and dropout actuator 205 are swung toward two opposite directions during automatic closing and separating brake,
It ensures that the driving process of switch closing and switch opening is reliable and orderly, avoids interfering.
The dropout actuator 205 can push the release lever of breaker 100 under the driving of third transmission gear 2073, make to break
Road device 100 completes trip action, and release lever can be the lock or trip action of the operating mechanism 104 of breaker 100
Drive link.The operation handle of the operating mechanism 104 of the combined floodgate actuator 204 and breaker 100 links, can directly or
It connects in succession, the operation handle of breaker can be driven to close a floodgate under the driving of third transmission gear 2073.
As shown in figure 9, the third transmission gear 2073 is connected by drive link 208 with the driving of combined floodgate actuator 204,
In, drive link 208 is connect with 204 separate type of combined floodgate actuator, after the completion of making feed motion, combined floodgate actuator 204 and drive link
208 separation, do not influence the reset of manual operation and the dropout of combined floodgate actuator 204.Specifically, one end of the drive link 208
It is connected on third transmission gear 2073, the other end of drive link 208 is stretched into the track groove of driving device pedestal, driving of closing a floodgate
One end of part 204 is rotatably installed on the bottom plate of driving device pedestal, and is connected with the operation handle of breaker, is closed a floodgate and is driven
The other end of moving part 204 is located at the top of track groove, third transmission gear 2073 can drive drive link 208 along track groove slide to
It is connected with combined floodgate actuator 204, so as to which combined floodgate actuator 4 be pushed to swing.
As shown in FIG. 10 and 11, one end of the dropout actuator 205 is rotatably installed on the bottom plate of driving device pedestal,
And by reduction torsion spring 2050 and driving device pedestal elastic connection, the other end of dropout actuator 205 is located at third driving cog
Second driving protrusion 2075 of lower section and the third transmission gear 2073 of wheel 2073 coordinates, and corresponding with the release lever of breaker sets
It puts, 2075 rotation of the second driving protrusion of third transmission gear 2073 is extremely connected with dropout actuator 205, de- so as to drive
The release lever that actuator 205 pushes breaker is detained, to complete the trip action of breaker.
It should be pointed out that the control circuit control motor 206 is rotated forward, overturn or stalled as the ordinary skill in the art
Means are not just repeating again.
Preferably, as shown in figure 3, the external breaker of the electric energy meter of the utility model, further includes and be arranged on magnetictrip
The arc extinguishing structure 106 of 105 downsides, arc extinguishing structure 106 includes arc extinguishing structure housing and multiple parallel intervals are arranged on arc extinguishing knot
The arc extinguishing grid pieces of structure enclosure interior.The arc extinguishing structure 106 is conducive to extinguish the electric arc generated by breaker open operation rapidly, favorably
In the Electrical Safety for ensureing user, extend the service life of breaker.
The above content is combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that the specific implementation of the utility model is confined to these explanations.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, several simple deduction or replace can also be made, should all be regarded
To belong to the scope of protection of the utility model.
Claims (8)
1. a kind of external breaker of electric energy meter, including breaker (100) and for driving breaker (100) combined floodgate/separating brake
Driving device (200)；It is characterized in that：
The breaker (100) includes input terminal and outlet terminal, sets to detect between input terminal and outlet terminal
The operating current signal of breaker (100) and the current transformer (103) for being transferred to driving device (200),
The drive mechanism that driving device (200) is connect including control circuit and with control circuit, control circuit and electric energy meter take
The signal output end of control module is connected, and the signal output end of current transformer (103) is connected with control circuit board (201), control
Circuit receives the sub-gate signal of expense control module, and the operating current for receiving current transformer (103) detection is less than setting electricity
During stream, breaker (100) separating brake is driven by drive mechanism.
2. the external breaker of electric energy meter according to claim 1, it is characterised in that：The current transformer measures electric current model
Enclose the rated operational current for being less than breaker more than the setting electric current.
3. the external breaker of electric energy meter according to claim 1, it is characterised in that：The breaker (100) further includes electricity
Magnetic release (105), magnetictrip (105) are electrically connected with outlet terminal, and current transformer (103) is arranged on magnetictrip
(105) between outlet terminal.
4. the external breaker of electric energy meter according to claim 1, it is characterised in that：The control circuit include microcontroller,
Signal processor and current threshold comparing unit, the signal input part and signal output end of current threshold comparing unit respectively with electricity
Current transformer is connected with microcontroller, and microcontroller is connected by signal processor with electric energy meter, and microcontroller is connected control with drive mechanism
Make its action.
5. the external breaker of electric energy meter according to claim 1, it is characterised in that：The control circuit includes more electric
Road, two input terminals of comparison circuit respectively with current transformer and setting electric current reference connection, the output terminal of comparison circuit with
Microcontroller is connected, and microcontroller is connected with drive mechanism.
6. the external breaker of electric energy meter according to claim 1, it is characterised in that：It is described including control circuit board (201)
Control circuit board (201) is equipped with control circuit and feedback circuit, and feedback circuit includes the current-limiting resistance R0 of concatenation and semiconductor is opened
It closes, semiconductor switch is connected by current-limiting resistance R0 with the outlet terminal of breaker (100), the action of acquisition breaker (100)
Signal, the signal output end of semiconductor switch are connected with the expense control module of electric energy meter, the input terminal of breaker (100) and control
Circuit is electrically connected, and working power is provided for it, and control circuit is connected with semiconductor switch, controls the ON/OFF of semiconductor switch.
7. the external breaker of electric energy meter according to claim 1, it is characterised in that：The drive mechanism includes and control electricity
The motor (206) of road connection, motor (206) are connected with driving gear set driving, and driving gear set includes third transmission gear
(2073), third transmission gear (2073) is connected with combined floodgate actuator (204), dropout actuator (205) driving, combined floodgate actuator
(204) operation handle with breaker (100) is connected；
The control circuit of the driving device (200) drives third transmission gear (2073) to be rotated to side by motor (206),
The operation handle that driving combined floodgate actuator (204) makes breaker (100) swings the combined floodgate for realizing breaker (100)；The control
Circuit drives third transmission gear (2073) to be rotated to opposite side by motor (206), dropout actuator (205) is driven to trigger disconnected
Road device (100), which is threaded off, realizes the separating brake of breaker (100).
8. the external breaker of electric energy meter according to claim 1, it is characterised in that：The input terminal and outlet terminal are equal
Including terminal screw and wire frame；
The breaker further includes Shell of circuit breaker, Shell of circuit breaker setting wiring construction, input terminal and outlet terminal difference
It is arranged in different wiring mechanisms, wiring construction includes barrier structure, and barrier structure includes being arranged on wire connection terminal side
It baffle slideway (6) and is inserted into baffle slideway (6) for blocking the screw baffle of terminal screw, screw baffle is slided with baffle
The Shell of circuit breaker part lead sealing connection of road (6) inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721338371.6U CN207503893U (en) | 2017-10-17 | 2017-10-17 | The external breaker of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721338371.6U CN207503893U (en) | 2017-10-17 | 2017-10-17 | The external breaker of electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207503893U true CN207503893U (en) | 2018-06-15 |
Family
ID=62500586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721338371.6U Active CN207503893U (en) | 2017-10-17 | 2017-10-17 | The external breaker of electric energy meter |
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| Country | Link |
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| CN (1) | CN207503893U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111653460A (en) * | 2020-05-29 | 2020-09-11 | 中国电力科学研究院有限公司 | Wireless communication circuit breaker with internal load |
| CN111952122A (en) * | 2020-06-29 | 2020-11-17 | 深圳微羽智能科技有限公司 | Novel circuit breaker |
-
2017
- 2017-10-17 CN CN201721338371.6U patent/CN207503893U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111653460A (en) * | 2020-05-29 | 2020-09-11 | 中国电力科学研究院有限公司 | Wireless communication circuit breaker with internal load |
| CN111653460B (en) * | 2020-05-29 | 2023-01-17 | 中国电力科学研究院有限公司 | Wireless communication circuit breaker with internal load |
| CN111952122A (en) * | 2020-06-29 | 2020-11-17 | 深圳微羽智能科技有限公司 | Novel circuit breaker |
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