CN101950713B - Small intelligent circuit breaker convenient for adjusting - Google Patents
Small intelligent circuit breaker convenient for adjusting Download PDFInfo
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- CN101950713B CN101950713B CN201010279842A CN201010279842A CN101950713B CN 101950713 B CN101950713 B CN 101950713B CN 201010279842 A CN201010279842 A CN 201010279842A CN 201010279842 A CN201010279842 A CN 201010279842A CN 101950713 B CN101950713 B CN 101950713B
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Abstract
The invention relates to a small intelligent circuit breaker convenient for adjusting, which comprises a switch mechanism and a current transformer, after the improvement is carried out, an intelligent controller and a magnetic flux transformer are additionally arranged, the current transformer is connected to an outgoing line of the circuit breaker, an output signal of the current transformer is connected to the input end of the intelligent controller, a top rod of the magnetic flux transformer drives a lock catch of the switch mechanism, and the control end of the magnetic flux transformer is connected to the output end of the intelligent controller; the switch mechanism is provided with a top rod restoring lever, the middle of the top rod restoring lever is hinged on a shell of a circuit breaker body, one end of the top rod restoring lever is movably connected with the top rod of the magnetic flux transformer and the other end is driven by a convex head arranged at the end part of a movable contact lever of the switch mechanism. The invention has the advantages of small volume, low energy consumption, flexible and convenient use, and adjustable rated current and protection delay time, can realize selective protection function of the line, effectively prevents the bypass trip, and increases the flexibility and the reliability of a power distribution system.
Description
Technical field
The present invention relates to that a kind of volume is little, energy consumption is low, current parameters and the adjustable miniature circuit breaker of protection delay time belong to the switching technique field.
Background technology
At present; Produce both at home and abroad and widely used miniature circuit breaker mainly is made up of switching mechanism, bimetal leaf, magnetic backup protection release and arc-control device, wherein switching mechanism is shouldered bar, snap close, tripping, moving contact, fixed contact by handle, connecting rod, moving contact and is formed hot, the magnetic two segment protect dropout modes of this circuit breaker employing; When circuit overload; Bimetal leaf heating is crooked, and the one of which end produces displacement and also promotes snap close and rotate, and makes the switching mechanism delayed releasing and breaks off.When big short circuit current appearred in the circuit failed because, the magnetic force that utilizes magnetic backup protection release to produce promoted snap close and rotates, and made the switching mechanism instantaneous trip and broke off.There is following deficiency in existing miniature circuit breaker when in distribution line, using: at first; The protection delay time of magnetic backup protection release is non-adjustable; In the related distribution network of upper and lower level is arranged, when the following end line of subordinate's miniature circuit breaker is short-circuited, because short circuit current is bigger in the circuit; The magnetic tripping mechanism of upper and lower level miniature circuit breaker is moved simultaneously and break off; The overstep tripping phenomenon promptly taking place, cause the distribution network of being made up of several miniature circuit breakers of higher level's miniature circuit breaker and subordinate thereof all to have a power failure, has enlarged the coverage of accident.
Secondly, can generate heat during the bimetal leaf operate as normal, especially the less circuit breaker of rated current; The resistance of bimetal leaf is bigger, and it is more to generate heat, and has increased the extra energy consumption of circuit; And the parameter of bimetal leaf is non-adjustable; When the rated current of certain bar circuit increased, the circuit breaker that can only more renew caused the waste of material and the increase of cost.
In addition; Existing small-sized RCCB installs electric leakage dropout module additional by miniature circuit breaker to be formed; Because electric leakage dropout module width is bigger; Make the width modulus of small-sized RCCB significantly increase, thereby the distribution box volume is relatively large, this brings many worries also for numerous manufacturers and user.
Want to overcome above-mentioned shortcoming, except that need adopt parameter adjustable signals collecting and trip control apparatus, also must carry out necessary improvement, enable to be complementary, therefore have bigger difficulty with trip control apparatus to existing switching mechanism.
Summary of the invention
The objective of the invention is to overcome prior art deficiency, provide that a kind of volume is little, energy consumption is low, current parameters and the adjustable intelligent miniature circuit breaker of being convenient to regulate of protection delay time.
Problem according to the invention realizes with following technical proposals:
A kind of intelligent miniature circuit breaker of being convenient to regulate, it comprises the switching mechanism summation current transformer, said switching mechanism is shouldered bar, snap close, tripping, moving contact, fixed contact by handle, connecting rod, moving contact and is formed; After the improvement; Set up intelligent controller and magnetic flow convertor, said current transformer is connected in the circuit breaker outlet, and its output signal connects the input of intelligent controller; The snap close of the top rod driving switching mechanism of said magnetic flow convertor, the output of its control termination intelligent controller; Said switching mechanism is provided with the push rod restoring lever; The middle part of said push rod restoring lever is hinged on the breaker body shell; The push rod of one of which end and magnetic flow convertor flexibly connects, and the plush copper that the other end is shouldered boom end by the moving contact that is arranged at switching mechanism drives.
The above-mentioned intelligent miniature circuit breaker of being convenient to regulate also is provided with magnetic backup protection release in the formation, the coil of said magnetic backup protection release is connected between the moving contact and circuit breaker outlet of switching mechanism, the snap close of its armature driving switch mechanism.
The above-mentioned intelligent miniature circuit breaker of being convenient to regulate also is provided with arc control device in the formation, said arc control device are connected between the moving contact and fixed contact of switching mechanism.
The above-mentioned intelligent miniature circuit breaker of being convenient to regulate, said current transformer is provided with a plurality of, is connected in each the phase current circuit and zero-sequence current circuit that flows through circuit breaker.
The above-mentioned intelligent miniature circuit breaker of being convenient to regulate; Said switching mechanism and magnetic flow convertor are installed on the breaker body enclosure; Said current transformer and intelligent controller are installed on the breaker body housing exterior, and current transformer is fixed in the instrument transformer installation frame of breaker body outer casing underpart.
The above-mentioned intelligent miniature circuit breaker of being convenient to regulate; Said intelligent controller is made up of CPU, signals collecting amplifying circuit, multi-channel gating switch, output signal amplifier, keyboard and LCD; Said signals collecting amplifying circuit is provided with a plurality of; Each signals collecting amplifying circuit constitutes by rectifier bridge and input signal amplifier, and the output signal of a current transformer of input termination of said rectifier bridge, output connect an input of multi-channel gating switch through input signal amplifier; The signal output part of said multi-channel gating switch connects the P00 end of CPU, the P20 end of the input termination CPU of said output signal amplifier, the control coil of output termination magnetic flow convertor; Said keyboard connects the PORT1 interface of CPU; Said LCD connects the PORT2 interface of CPU.
The present invention utilizes the current transformer acquisition stream to cross the overload or the short circuit current of circuit breaker; Utilize magnetic flow convertor driving switch mechanism to thread off; Simultaneously traditional switching mechanism is improved; Increased the push rod restoring lever, the end that moving contact is shouldered bar has increased plush copper, works reliably to guarantee magnetic flow convertor to repeat.When circuit overloads or when short trouble occurring,, switching mechanism is threaded off by the action of intelligent controller control magnetic flow convertor.Because intelligent controller can be set the current parameters of circuit breaker and the delay time of output control signal easily; Thereby this device not only can be adjusted load current value as required; Can also realize three-stage protection function, the long delay that promptly transships protection, short circuit short time delay are protected and the short circuit instantaneous protection, and then can realize the selective protection function of circuit; Prevent the generation of overstep tripping phenomenon effectively, increased the reliability of distribution system.
The current transformer of this device is provided with a plurality of; One of them is as zero sequence current mutual inductor; Be used for the leakage current information of Monitoring Line, its application makes this device increase creepage protection function, thereby has saved the leakage tripping device module in the conventional small RCCB; So just significantly reduced the width modulus of RCCB, made terminal distribution system and casing be tending towards miniaturization.
This device can utilize an intelligent controller to control a plurality of miniature circuit breakers, function, the characterisitic parameter of a plurality of miniature circuit breakers is shown, adjusts and adjust, and the various faults that occur are remembered.Also can be easy to connect the realization communication function, to adapt to the needs of intelligent grid through network.Simultaneously, this product has been cancelled heater element, has reduced additional energy consumption, generally can save energy more than 50% some products even can save energy up to 80%.
This device volume is little, energy consumption is low, and rated current is adjustable, flexible and convenient to use with the protection delay time, and can realize the selective protection function of circuit, prevents the generation of overstep tripping phenomenon effectively, has increased the flexibility and the reliability of distribution system.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described further.
Fig. 1 is an electric theory diagram of the present invention;
Fig. 2 is the electrical schematic diagram of intelligent controller;
Fig. 3 is a breaker body internal structure sketch map;
Fig. 4 is the structure chart of magnetic flow convertor when being in the energy storage position;
Fig. 5 is the structure chart of magnetic flow convertor when being in the off-position;
Fig. 6 is the state of circuit breaker each component of machine when being in the separating brake position;
Fig. 7 is the state of circuit breaker each component of machine when being in closing position;
Fig. 8 is the structural representation of snap close;
Fig. 9 is the structural representation of push rod restoring lever;
Figure 10 is the vertical view of Fig. 9;
Figure 11 is the structural representation that moving contact is shouldered bar;
Figure 12 is a circuit breaker aggregate erection sketch map of the present invention.
Each symbol is among the figure: 1, breaker body shell; 2, plush copper; 3, arc control device; 4, instrument transformer installation frame; 5, breaker body; 6, moving contact is shouldered bar; 7, snap close; 8, push rod restoring lever; 9, handle; 10, connecting rod; 11, tripping; 12, magnetic backup protection release; 13, moving contact; 14, fixed contact; 15, outlet; 16, inlet wire; 17, push rod; 18, permanent magnet; 19, energy-stored spring; 20, tripping coil; CPU, microprocessor; U1, multi-channel gating switch; ZQ, rectifier bridge; IF, input signal amplifier; FD, output signal amplifier; TK, magnetic flow convertor; KB, keyboard; LCD, LCD; CT1, CT2, current transformer.
Embodiment
Referring to Fig. 1～Fig. 7; Split intelligence miniature circuit breaker is made up of small-sized body 5, current transformer and the intelligent controller of opening circuit; Current transformer can be one; Also can be a plurality of (one of them is a zero sequence current mutual inductor), be installed in the instrument transformer installation frame 4 that instrument transformer installation frame 4 is positioned at the bottom of breaker body shell 1.Fig. 3 is a miniature circuit breaker body interior structure, from Fig. 3, can see, magnetic flow convertor TK has replaced the inner bimetal leaf of conventional small circuit breaker, and its push rod 17 is connected with push rod restoring lever 8 with snap close 7.When the needs action is threaded off; Intelligent controller sends control signal for magnetic flow convertor TK; Magnetic flow convertor TK discharges energy storage makes its push rod make progress 17, and 8 clockwise swings make the switch dropout thereby drive snap close 7 is with the push rod restoring lever, and while moving contact when switch is threaded off is shouldered in bar 6 clockwise directions and swung; And, accomplish energy storage next time through the push rod 17 of magnetic flow convertor TK being moved downward with the 8 counterclockwise interlocks of push rod restoring lever.
Current transformer among Fig. 3 has two; Wherein CT1 is used for the phase current that acquisition stream is crossed this circuit breaker; CT2 then can be used as zero sequence current mutual inductor; CT1 and CT2 are installed in the miniature circuit breaker leading-out terminal through instrument transformer installation frame 4, have solved miniature circuit breaker can not be installed these parts because the inner space is little problem.Simultaneously,, make two kinds of products of small-sized RCCB and miniature circuit breaker to combine together, meet two product standards of GB10963 and GB16917 simultaneously owing to solved the installation question of zero sequence current mutual inductor.
Can find out by Fig. 1; Intelligent controller is independent of outside the miniature circuit breaker body and does not receive volume restrictions; Its function can be done very powerfully; Accomplish that one drags a plurality of miniature circuit breaker bodies, realize the centralized control of one group of miniature circuit breaker or small-sized RCCB, intelligent controller can be easily carries out parameter adjustment, adjusts and shows arbitrary circuit breaker wherein.
Referring to Fig. 2; The AC signal of current transformer CT1 output becomes direct current signal after rectifier bridge ZQ rectification, this signal is amplified into the input Y0 of multi-channel gating switch U1 through input signal amplifier IF, and the signal output part Z of multi-channel gating switch U1 holds with the P00 of CPU and is connected; S0, S1, S2 are the address wire of selector channel; Be connected with P10, P11, the P12 end of CPU respectively, when overload, short trouble occurring in the circuit, the P20 end output trip signal of CPU; Make magnetic flow convertor TK action, circuit breaker trip.Signals collecting amplifying circuit among Fig. 2 has only drawn one; When same circuit breaker is provided with a plurality of current transformer; Can increase the quantity of signals collecting amplifying circuit, the output signal of unlike signal collection amplifying circuit connects the different inputs of multi-channel gating switch U1 respectively.When an intelligent controller was controlled a plurality of circuit breaker, the quantity of signals collecting amplifying circuit maybe be greater than the quantity of multi-channel gating switch U1 input, and can increase the quantity of multi-channel gating switch U1 this moment as required.
Referring to Fig. 6, Fig. 7, the switching mechanism among the present invention is shouldered bar 6, snap close 7, tripping 11, moving contact 13, fixed contact 14 by handle 9, connecting rod 10, moving contact and is formed, and control connection relation therebetween is:
1. when switch closes a floodgate, return back to Fig. 7 position clockwise, shoulder bar 6 through connecting rod 10 drive moving contacts and rotate counterclockwise, thereby moving contact 13 is contacted with fixed contact 14, accomplish combined floodgate work through operating grip 9;
2. during the switch separating brake, to Fig. 6 position, drive moving contacts through connecting rod 10 and shoulder bar 6 and clockwise rotate, thereby moving contact 13 is separated with fixed contact 14, accomplish separating brake work through operating grip 9 turning anticlockwises;
3. above-mentioned basis with the action of, separating brake is that tripping 11 and snap close 7 buckle at A place, and makes moving contact 13 and tripping 11 overlap at the B place;
4. reaction spring is equipped with in handle 9 inside, and when switch closed a floodgate, operating grip 9 overcame the spring counter-force and clockwise rotates, and shoulders bar 6 through connecting rod 10 drive moving contacts and rotates counterclockwise, and contacts with fixed contact 14 thereby drive moving contact 13, realizes closing a floodgate.At this moment, it is consistent that connecting rod 10 axis and handle 9 rotary holes and moving contact are shouldered bar 6 tie rod holes line directions, because the counter-force effect of moving contact 13 and the self-locking action at same axis direction of driving-chain make the switch "on" position be maintained.
5. nonserviceable when threading off down (overload, short circuit, electric leakage etc.); 12 actions of magnetic flow convertor TK or magnetic backup protection release make snap close 7 clockwise rotate and the buckle disengagement of tripping 11 at A place, thus make tripping 11 rotate counterclockwise and with the overlap joint disengagement of moving contact 13 at the B place; Moving contact 13 clockwise rotates rapidly under the effect of reaction spring with fixed contact 14 and breaks away from; Simultaneously, driving-chain loses self-locking action, and handle 9 returns rapidly under the effect of reaction spring; The drive moving contact is shouldered bar 6 and is clockwise rotated; Through the energy storage once more that its plush copper 2 interlock push rod restoring levers 8 realize magnetic flow convertor TK, tripping 11 clockwise rotate accomplish once more with snap close 7 buckling and with the overlap joint of moving contact 13, carry out the preparation of closing a floodgate next time.
Claims (5)
1. intelligent miniature circuit breaker of being convenient to regulate; It comprises the switching mechanism summation current transformer; Said switching mechanism is shouldered bar (6), snap close (7), tripping (11), moving contact (13), fixed contact (14) by handle (9), connecting rod (10), moving contact and is formed, and it is characterized in that, sets up intelligent controller and magnetic flow convertor (TK); Said current transformer is connected in the circuit breaker outlet (15); Its output signal connects the input of intelligent controller, the snap close (7) of push rod (17) the driving switch mechanism of said magnetic flow convertor (TK), the output of its control termination intelligent controller; Said switching mechanism is provided with push rod restoring lever (8); The middle part of said push rod restoring lever (8) is hinged on the breaker body shell (1); The push rod (17) of one of which end and magnetic flow convertor (TK) flexibly connects, and the plush copper (2) that the other end is shouldered bar (6) end by the moving contact that is arranged at switching mechanism drives.
2. according to the said intelligent miniature circuit breaker of being convenient to regulate of claim 1; It is characterized in that; Set up magnetic backup protection release (12); The coil of said magnetic backup protection release (12) is connected between the moving contact (13) and circuit breaker outlet (15) of switching mechanism, the snap close (7) of its armature driving switch mechanism.
3. according to claim 1 or the 2 said intelligent miniature circuit breakers of being convenient to regulate, it is characterized in that set up arc control device (3), said arc control device (3) are connected between the moving contact (13) and fixed contact (14) of switching mechanism.
4. according to the said intelligent miniature circuit breaker of being convenient to regulate of claim 3, it is characterized in that said current transformer is provided with a plurality of, be connected in each the phase current circuit and zero-sequence current circuit that flows through circuit breaker.
5. according to the said intelligent miniature circuit breaker of being convenient to regulate of claim 4; It is characterized in that; Said switching mechanism and magnetic flow convertor (TK) are installed on breaker body shell (1) inside; Said current transformer and intelligent controller are installed on breaker body shell (1) outside, and current transformer is fixed in the instrument transformer installation frame (4) of breaker body shell (1) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010279842A CN101950713B (en) | 2010-09-14 | 2010-09-14 | Small intelligent circuit breaker convenient for adjusting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010279842A CN101950713B (en) | 2010-09-14 | 2010-09-14 | Small intelligent circuit breaker convenient for adjusting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101950713A CN101950713A (en) | 2011-01-19 |
| CN101950713B true CN101950713B (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010279842A Active CN101950713B (en) | 2010-09-14 | 2010-09-14 | Small intelligent circuit breaker convenient for adjusting |
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| CN (1) | CN101950713B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580007A (en) * | 2012-07-25 | 2014-02-12 | 江苏创能电器有限公司 | Intelligent frame controller |
| CN103579996B (en) * | 2012-07-25 | 2016-07-06 | 江苏创能电器有限公司 | There is the reclosing controller of external leakage function based on intelligent plastic housing |
| CN103995170A (en) * | 2014-05-09 | 2014-08-20 | 安庆天瑞新材料科技股份有限公司 | Current detection and communication device for thermomagnetic breaker |
| CN103996575A (en) * | 2014-05-09 | 2014-08-20 | 安庆天瑞新材料科技股份有限公司 | Thermomagnetic breaker capable of current detection and communication |
| CN104701111B (en) * | 2015-03-19 | 2017-03-22 | 河北宝凯电气股份有限公司 | Miniature circuit breaker capable of quickly breaking |
| CN104715980B (en) * | 2015-03-19 | 2017-01-25 | 河北宝凯电气股份有限公司 | Magnetic reserved tripping protection mechanism |
| CN109449874A (en) * | 2018-12-27 | 2019-03-08 | 民普电气有限公司 | A kind of digital display leakage circuit breakers |
| CN109802358B (en) * | 2019-04-04 | 2022-03-22 | 厦门山秀阳光科技有限公司 | Plastic shell intelligent electronic circuit breaker protection circuit |
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| CN1558438A (en) * | 2004-02-11 | 2004-12-29 | 正泰集团公司 | Actuation device for auxiliary release of residual current actuation release breaker |
| CN2701061Y (en) * | 2004-05-18 | 2005-05-18 | 天津市百利低压电器有限公司 | Plastic casing type circuit breaker |
| CN1835337A (en) * | 2006-03-30 | 2006-09-20 | 上海电器科学研究所（集团）有限公司 | Controller of circuit |
| CN101562095A (en) * | 2008-04-29 | 2009-10-21 | 上海磊跃自动化设备有限公司 | Intelligent controller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07326273A (en) * | 1994-05-31 | 1995-12-12 | Fuji Electric Co Ltd | Overcurrent trip device for circuit breaker |
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2010
- 2010-09-14 CN CN201010279842A patent/CN101950713B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558438A (en) * | 2004-02-11 | 2004-12-29 | 正泰集团公司 | Actuation device for auxiliary release of residual current actuation release breaker |
| CN2701061Y (en) * | 2004-05-18 | 2005-05-18 | 天津市百利低压电器有限公司 | Plastic casing type circuit breaker |
| CN1835337A (en) * | 2006-03-30 | 2006-09-20 | 上海电器科学研究所（集团）有限公司 | Controller of circuit |
| CN101562095A (en) * | 2008-04-29 | 2009-10-21 | 上海磊跃自动化设备有限公司 | Intelligent controller |
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| CN101950713A (en) | 2011-01-19 |
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Address after: 071051 Chaoyang North Street, Hebei, Baoding, No. 266 Patentee after: HEBEI BAO KAY ELECTRIC Co.,Ltd. Address before: 071051 Chaoyang North Street, Hebei, Baoding, No. 266 Patentee before: Hebei bao kay electric Co.,Ltd. |
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Address after: 071051 Chaoyang North Street, Hebei, Baoding, No. 266 Patentee after: Hebei bao kay electric Co.,Ltd. Address before: 071051, Baoding, Hebei sunshine North Street, No. 1508 Patentee before: HEBEI BAOKAI ELECTRICAL EQUIPMENT Co.,Ltd. |