CN102486982A - Breaker with forced flash barrier device - Google Patents
Breaker with forced flash barrier device Download PDFInfo
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- CN102486982A CN102486982A CN2010105808971A CN201010580897A CN102486982A CN 102486982 A CN102486982 A CN 102486982A CN 2010105808971 A CN2010105808971 A CN 2010105808971A CN 201010580897 A CN201010580897 A CN 201010580897A CN 102486982 A CN102486982 A CN 102486982A
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Abstract
The invention relates to a breaker with a forced flash barrier device. The breaker comprises a shell, a movable contact and a fixed contact, wherein the shell is internally provided with a lever made of an insulating material and composed of a left moment arm, a right moment arm and a fulcrum, the left moment arm of the lever is inserted into a gap between the movable contact and the fixed contact since the right moment arm is pushed rightwards by the movable contact during the separation process of the movable contact and the fixed contact, and the left moment arm of the lever goes out of the gap between the movable contact and the fixed contact since the left moment arm is pushed leftwards by the movable contact during the closing process of the movable contact and the fixed contact. The breaker is simple in structure and reliable in movement, can quickly cut off an electric arc when the movable contact and the fixed contact are separated so as to improve arc voltage, increase the breaking capacity and the current-limiting capacity of the breaker, widen the application range of the breaker and realize reversible protection.
Description
Technical field
The present invention relates to a kind of circuit breaker of forcing arc insulating apparatus that has.
Background technology
In order to protect user self Electrical Safety; Circuit breaker all can be installed usually as protection electrical equipment in electric power system; Along with improving constantly of power industry and electricity consumption level; The performance of circuit breaker, quality, kind etc. are required also increasingly high, the circuit breaker of real an urgent demand development of miniaturized, high breaking capacity.As everyone knows, in the process of circuit breaker disjunction, electric arc can be produced between moving contact and the fixed contact,,, the breaking capacity and the current limiting performance of circuit breaker will be directly influenced if can not in time extinguish because electric arc has electric conductivity.Therefore, for breaking capacity and the current limiting capacity that improves circuit breaker, should electric arc be extinguished rapidly.
The existing circuit breaker arc quenching system generally all adopts grid sheet short arc principle, and the magnetic field that relies on the contact galvanic circle to produce is ordered about electric arc and got into arc control device, and then extinguish arcs.But conventional grid chip arc control device are difficult to make that electric arc in time extinguishes; Each producer also improves arc-suppressing method constantly, improve breaking capacity, like the method for the gas blast arc-quenching adopted; Help cooling off electric arc on the one hand, rely on air-flow to order about electric arc on the other hand and get into the grid sheet; For the direct current arc quenching system, some producer's employing magnet is introduced arc control device with electric arc and is extinguished, and between contact, is difficult to block the problem of extinguishing to solve electric arc.The improvement of above-mentioned arc-suppressing method though can improve arc quenching effect, improves the breaking capacity of circuit breaker to a certain extent, still can not play the effect of when the circuit breaker disjunction rapid disjunction and extinguish arcs, thereby directly influences the breaking capacity of circuit breaker; Simultaneously, adopt the method for magnet striking can limit its range of application in the direct current arc quenching system, promptly the mode of connection is limited, can't realize reversible protection.So-called reversible protection is meant no matter be that forward and reverse fault electric current all can be realized reliably protecting for direct current system.
Can between two contacts, produce electric arc during the dynamic and static contact disjunction of circuit breaker, comprise four-stage in general, be i.e. mechanism action time, electric arc dead time, arc motion time and arc extinction time from short circuit current to arc extinction occurring.In first stage, the arc voltage at contact two ends is zero, and the second stage arc voltage changes little, elongates at phase III electric arc, and electric arc leaves contact and gets into arc extinguishing grid pieces through arc angle, and this stage arc voltage increases fast.Get into the grid sheet at stage electric arc, arc voltage reaches maximum, and during greater than the supply voltage instantaneous value, electric current is forced and reduces, and then arc extinction.The arc voltage size and the rate of climb are the decision keys of extinguish arcs fast, and arc voltage comprises arc cathode pressure drop, anode drop and voltage drop in arc column in general, and is directly proportional with the arc resistance size.Therefore, can improve arc voltage, arc extinction the most at last through the method that improves arc resistance.
Summary of the invention
Based on above-mentioned, the purpose of this invention is to provide a kind of circuit breaker of forcing arc insulating apparatus that has of simple in structure, reliable in action, it can cut off electric arc rapidly when dynamic and static contact disjunction, improve arc resistance, significantly improves the breaking capacity of circuit breaker; Simultaneously can realize reversible protection, enlarge the range of application of circuit breaker.
The solution that the present invention adopts is:
A kind of circuit breaker with pressure arc insulating apparatus comprises shell, moving contact, fixed contact, wherein:
The lever that adopts insulating material to be made up of the left arm of force, the right arm of force and fulcrum is housed in the said shell; In moving contact and fixed contact separating process, the left arm of force of said lever can be promoted to insert in the gap between moving contact and the fixed contact to the right by moving contact because of the right arm of force; In moving contact and fixed contact closing course, the left arm of force of said lever can be promoted left by moving contact and withdraw from the gap between moving contact and the fixed contact.
Further:
Angle between the said left arm of force and the right arm of force is less than 180 degree.
Said lever through its fulcrum versatilely with shell or shell in other parts be connected.
Said fulcrum is arranged on the axis hole of lever bottom, or is arranged on a pair of convexity or the pit of the front and back sides of lever.
When moving contact is done the disconnection motion and is produced the gap fixed contact; The right arm of force of lever under the ordering about of moving contact to lower swing; Make left arm of force perk and being inserted in the gap between the dynamic and static contact, thereby play the effect of forcing to cut off electric arc, improve the breaking capacity of circuit breaker.When moving contact was done closing motion to fixed contact, the left arm of force of lever to lower swing, withdrawed from the gap between driven, the fixed contact under the ordering about of moving contact, the then perk of the right arm of force of lever, thus do not influence the connection of circuit.
Simple in structure, the reliable in action of the present invention can be cut off electric arc rapidly when dynamic and static contact disjunction, improves arc voltage, significantly improves the breaking capacity and the current limiting capacity of circuit breaker, enlarges the range of application of circuit breaker, realizes reversible protection.
Description of drawings
Fig. 1 is for forcing the structural representation of arc insulating apparatus;
Fig. 2 is applied to the sketch map in the dual-interruption point breaker for forcing arc insulating apparatus;
Fig. 3 inserts the sketch map in the gap between the dynamic/static contact for forcing arc insulating apparatus;
Fig. 4 withdraws from the sketch map in the gap between the dynamic/static contact for forcing arc insulating apparatus.
Embodiment
The present invention relates to a kind of circuit breaker of forcing arc insulating apparatus that has, this circuit breaker comprises shell, handle, end of incoming cables, magnetic release, thermal overload release, moving contact, fixed contact, arc insulating apparatus, pressure arc insulating apparatus, arc control device, striking sheet, leading-out terminal.Wherein except that arc insulating apparatus and pressure arc insulating apparatus, other parts are similar with conventional circuit breaker, no longer describe at this, only describe the pressure arc insulating apparatus part of circuit breaker.Wherein:
As shown in Figure 1, the lever of this pressure arc insulating apparatus 2 for adopting insulating material to constitute by the left arm of force, the right arm of force and fulcrum, the angle between the left arm of force and the right arm of force is less than 180 degree.
This pressure arc insulating apparatus is contained in the case for circuit breaker, through the fulcrum of its lever versatilely with shell or shell in other parts be connected.
In an application example of the present invention shown in Figure 2; Circuit breaker is a dual-interruption point breaker; Insert and put an arc insulating apparatus 1 between its two groups of contacts, connect two on the arc insulating apparatus 1 versatilely and force arc insulating apparatus 2, arc insulating apparatus 1 is all processed with insulating material with pressure arc insulating apparatus 2.
Following illustration principle.
See also Fig. 3, in moving contact 6 and fixed contact 5 separating process, when 6 pairs of fixed contacts 5 of moving contact are done the disconnection motion and produced the gap; The right arm of force of lever under the ordering about of moving contact 6 to lower swing; Make and left arm of force perk and being inserted in the gap between the dynamic and static contact most of electric arc is cut off rapidly, make the electric arc of fixed contact part move to the arc control device direction along last arc angle; The electric arc of moving contact part also moves towards the arc control device direction along following arc angle, and then is extinguished by arc control device; Remaining a small amount of electric arc is forced arc insulating apparatus 2 and forces to elongate, and arc resistance is improved rapidly, and then arc voltage increases rapidly, has significantly reduced the time that electric arc is extinguished, thereby has significantly improved the breaking capacity and the current limiting capacity of circuit breaker.
See also Fig. 4, in the closed process of moving contact 6 and fixed contact 5, the left arm of force of lever to lower swing, withdraws from the gap between driven, the fixed contact under the ordering about of moving contact 6, the then perk of the right arm of force of lever, thus do not influence the connection of circuit.
In the present embodiment, the fulcrum of the lever of pressure arc insulating apparatus 2 is arranged on the axis hole 3 of lever bottom, and axis hole 3 flexibly connects through an axle and arc insulating apparatus 1.In addition, the fulcrum of lever also can be arranged on a pair of convexity or the pit of the front and back sides of lever.The fulcrum of lever versatilely with shell or shell in other parts be connected, as long as can realize swing or rotate.
Claims (5)
1. one kind has the circuit breaker of forcing arc insulating apparatus, comprises shell, moving contact, fixed contact, it is characterized in that:
The lever that adopts insulating material to be made up of the left arm of force, the right arm of force and fulcrum is housed in the said shell;
In moving contact and fixed contact separating process, the left arm of force of said lever can be promoted to insert in the gap between moving contact and the fixed contact to the right by moving contact because of the right arm of force;
In moving contact and fixed contact closing course, the left arm of force of said lever can be promoted left by moving contact and withdraw from the gap between moving contact and the fixed contact.
2. the circuit breaker with pressure arc insulating apparatus as claimed in claim 1 is characterized in that:
Angle between the said left arm of force and the right arm of force is less than 180 degree.
According to claim 1 or claim 2 have a circuit breaker of forcing arc insulating apparatus, it is characterized in that:
Said lever through its fulcrum versatilely with shell or shell in other parts be connected.
4. the circuit breaker with pressure arc insulating apparatus as claimed in claim 3 is characterized in that:
Said fulcrum is arranged on the axis hole of lever bottom.
5. the circuit breaker with pressure arc insulating apparatus as claimed in claim 3 is characterized in that:
Said fulcrum is arranged on a pair of convexity or the pit of the front and back sides of lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105808971A CN102486982A (en) | 2010-12-03 | 2010-12-03 | Breaker with forced flash barrier device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105808971A CN102486982A (en) | 2010-12-03 | 2010-12-03 | Breaker with forced flash barrier device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102486982A true CN102486982A (en) | 2012-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105808971A Pending CN102486982A (en) | 2010-12-03 | 2010-12-03 | Breaker with forced flash barrier device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102486982A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832062A (en) * | 2012-08-28 | 2012-12-19 | 北京人民电器厂有限公司 | Electrical appliance device with arc separating member |
| CN104810222A (en) * | 2015-05-06 | 2015-07-29 | 北京人民电器厂有限公司 | Arc extinguish chamber with quick arc extinguishing function and miniaturized circuit breaker with arc extinguish chamber |
| CN106783294A (en) * | 2016-11-30 | 2017-05-31 | 金平娣 | A kind of mechanical extruding type arc-extinguishing mechanism of power circuit breaker |
| CN107342197A (en) * | 2017-08-23 | 2017-11-10 | 河北宝凯电气股份有限公司 | A kind of slide type Arc Distinguishing Device for Circuit Breakers |
| CN107342196A (en) * | 2017-08-23 | 2017-11-10 | 河北宝凯电气股份有限公司 | A kind of high breaking moulded case circuit breaker arc-control device |
| CN107359066A (en) * | 2017-08-23 | 2017-11-17 | 河北宝凯电气股份有限公司 | A kind of breaker jaw type arc-control device |
| CN107359068A (en) * | 2017-08-23 | 2017-11-17 | 河北宝凯电气股份有限公司 | A kind of breaker of plastic casing with compound arc extinction performance |
| CN107393779A (en) * | 2017-08-23 | 2017-11-24 | 河北宝凯电气股份有限公司 | A kind of AC/DC omnipotent breaker with stronger arc quenching effect |
| CN109801818A (en) * | 2019-03-22 | 2019-05-24 | 乐清市速通电气有限公司 | Contact system with arc |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201084657Y (en) * | 2007-08-04 | 2008-07-09 | 漳州马可电器科技有限公司 | A breaker with the arc-breaking/-quenching device |
| DE102007034526B3 (en) * | 2007-07-24 | 2009-02-19 | Siemens Ag | Electrical protection device |
| CN201886996U (en) * | 2010-12-03 | 2011-06-29 | 北京人民电器厂有限公司 | Circuit breaker with compulsory arc partitioning device |
-
2010
- 2010-12-03 CN CN2010105808971A patent/CN102486982A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007034526B3 (en) * | 2007-07-24 | 2009-02-19 | Siemens Ag | Electrical protection device |
| CN201084657Y (en) * | 2007-08-04 | 2008-07-09 | 漳州马可电器科技有限公司 | A breaker with the arc-breaking/-quenching device |
| CN201886996U (en) * | 2010-12-03 | 2011-06-29 | 北京人民电器厂有限公司 | Circuit breaker with compulsory arc partitioning device |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832062A (en) * | 2012-08-28 | 2012-12-19 | 北京人民电器厂有限公司 | Electrical appliance device with arc separating member |
| CN102832062B (en) * | 2012-08-28 | 2015-02-04 | 北京人民电器厂有限公司 | Electrical appliance device with arc separating member |
| CN104810222A (en) * | 2015-05-06 | 2015-07-29 | 北京人民电器厂有限公司 | Arc extinguish chamber with quick arc extinguishing function and miniaturized circuit breaker with arc extinguish chamber |
| CN106783294A (en) * | 2016-11-30 | 2017-05-31 | 金平娣 | A kind of mechanical extruding type arc-extinguishing mechanism of power circuit breaker |
| CN107359066A (en) * | 2017-08-23 | 2017-11-17 | 河北宝凯电气股份有限公司 | A kind of breaker jaw type arc-control device |
| CN107342196A (en) * | 2017-08-23 | 2017-11-10 | 河北宝凯电气股份有限公司 | A kind of high breaking moulded case circuit breaker arc-control device |
| CN107342197A (en) * | 2017-08-23 | 2017-11-10 | 河北宝凯电气股份有限公司 | A kind of slide type Arc Distinguishing Device for Circuit Breakers |
| CN107359068A (en) * | 2017-08-23 | 2017-11-17 | 河北宝凯电气股份有限公司 | A kind of breaker of plastic casing with compound arc extinction performance |
| CN107393779A (en) * | 2017-08-23 | 2017-11-24 | 河北宝凯电气股份有限公司 | A kind of AC/DC omnipotent breaker with stronger arc quenching effect |
| CN107359068B (en) * | 2017-08-23 | 2020-05-22 | 河北宝凯电气股份有限公司 | Moulded case circuit breaker with compound arc extinguishing performance |
| CN107342197B (en) * | 2017-08-23 | 2020-06-09 | 河北宝凯电气股份有限公司 | Arc extinguishing device of sliding plate type circuit breaker |
| CN107342196B (en) * | 2017-08-23 | 2020-06-09 | 河北宝凯电气股份有限公司 | Arc extinguishing device of high-breaking plastic casing type circuit breaker |
| CN109801818A (en) * | 2019-03-22 | 2019-05-24 | 乐清市速通电气有限公司 | Contact system with arc |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120606 |