CN104347327B - A kind of chopper - Google Patents
A kind of chopper Download PDFInfo
- Publication number
- CN104347327B CN104347327B CN201410618325.6A CN201410618325A CN104347327B CN 104347327 B CN104347327 B CN 104347327B CN 201410618325 A CN201410618325 A CN 201410618325A CN 104347327 B CN104347327 B CN 104347327B
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- CN
- China
- Prior art keywords
- arc
- current
- chopper
- control device
- connecting plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
Abstract
A kind of chopper.Solve breaking capacity and the problem of current limiting performance difference of chopper.It includes housing, moving contact, static contact, arc-control device, connecting plate and arc striking piece it is provided with in described housing, described connecting plate is connected with static contact, it is provided with separator between described arc striking piece and connecting plate, described arc-control device is externally provided with at least one annular current-limiting inductor, and the two ends of described current-limiting inductor are connected with arc striking piece, connecting plate respectively.The present invention provides new current limliting breaking technology, and on the premise of not changing housing size, its interrupting performance is unrelated with slider material, high arc voltage can be obtained rapidly, improve chopper impedance, be allowed to electric arc and quickly extinguish, so that chopper obtains high breaking capacity and current limiting performance.
Description
Technical field
The present invention relates to a kind of chopper, be specifically related to a kind of current limiting circuit breaker.
Background technology
Chopper is the protection device avoiding being caused by overload or short circuit damage for protection circuit and electrical equipment.Current omnipotent breaker or breaker of plastic casing not only have the effect of protection circuit wire and electric device, and have the critical function of limiting short-circuit current in short-circuit process.The performance of this kind of chopper is mainly interrupting performance and current limiting performance, in order to improve breaking capacity and the current limiting capacity of chopper, the electric arc produced in breaking course should be made to extinguish rapidly, at present the following method of employing: 1 moving contact and static contact sharp separation, elongating arc；2 electric arcs are under the guiding of arc striking component, entrance arc-control device；3 arc extinguishing grid pieces subdividing the arcs, formation series connection short arc；4 arc extinguishing grid pieces make electric arc cooling blow-out etc..Not changing dynamic and static contact separating distance, i.e. utilizing the outline of identical chopper, when being cut off by the bigger short circuit current increased with power supply capacity, if merely with above-mentioned electric arc elongation and cooling, self there is also the limit.And existing employing special material manufactures moving contact and static contact, make dynamic/static contact produce electrodynamic repulsion force can quickly separate, the most this mode production cost is higher, also has Partial DC chopper, strengthening magnetic blow-out by increase permanent magnet makes electric arc quickly through arc striking component, entrance arc-control device thus quickly extinguish electric arc, but there is polarity because of permanent magnet, be only used for DC circuit in this mode, and cannot be used for alternating current circuit.
Summary of the invention
For solve the breaking capacity of chopper in background technology and current limiting performance difference problem, the present invention provides a kind of chopper.
The technical scheme is that a kind of chopper, including housing, moving contact, static contact, arc-control device, connecting plate and arc striking piece it is provided with in described housing, described connecting plate is connected with static contact, it is provided with separator between described arc striking piece and connecting plate, described arc-control device is externally provided with at least one annular current-limiting inductor, and the two ends of described current-limiting inductor are connected with arc striking piece, connecting plate respectively.
As a modification of the present invention, described arc-control device is externally provided with two annular current-limiting inductors.
As a further improvement on the present invention, described current-limiting inductor is bent to form one wave part in the outer left and right of arc-control device.
As a further improvement on the present invention, it is provided with insulating part between described arc-control device and current-limiting inductor.
As a further improvement on the present invention, described insulating part is provided with storage tank, and described arc-control device inserts in storage tank.
As a further improvement on the present invention, described current-limiting inductor uses resistance material to make.
As a further improvement on the present invention, described current-limiting inductor is by welding, riveting or threaded and arc striking piece Joint.
As a further improvement on the present invention, described current-limiting inductor is by welding, riveting or threaded and connecting plate Joint.
The invention has the beneficial effects as follows, when short circuit current occurs in load-side, breaker actuation, moving contact separates with static contact and produces electric arc.When electric current enters annular current-limiting inductor through electric arc, on the one hand current-limiting inductor increases line impedance and plays metering function, on the other hand the magnetic field that current-limiting inductor produces makes electric arc rapidly enter arc-control device, makes electric arc split rapidly, cools down and extinguish, thus reaches to improve the purpose of chopper breaking capacity.The present invention provides new current limliting breaking technology, and on the premise of not changing housing size, its interrupting performance is unrelated with slider material, high arc voltage can be obtained rapidly, improve chopper impedance, be allowed to electric arc and quickly extinguish, so that chopper obtains high breaking capacity and current limiting performance.And the present invention is during normal operation of circuit breaker, electric current is directly connected by dynamic and static contact, and now no current circulation in current-limiting inductor, product does not produce additional energy consumption.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the embodiment of the present invention one.
Accompanying drawing 2 is the partial structurtes schematic diagram in accompanying drawing 1.
Accompanying drawing 3 is the structural representation after accompanying drawing 2 removes moving contact 2.
Accompanying drawing 4 is the structural representation after accompanying drawing 3 removes insulating part 9 and arc-control device 4.
Accompanying drawing 5 is the structural representation of current-limiting inductor 8.
Accompanying drawing 6 is the another embodiment of accompanying drawing 2.
Accompanying drawing 7 is the structural representation after accompanying drawing 6 removes insulating part 9.
Accompanying drawing 8 is the another embodiment of accompanying drawing 6.
Accompanying drawing 9 is the structural representation of the embodiment of the present invention two.
Accompanying drawing 10 is the partial enlargement structural representation in accompanying drawing 9.
Accompanying drawing 11 is the sectional structure schematic diagram of accompanying drawing 10.
Accompanying drawing 12 is the structural representation of the embodiment of the present invention two arc ignition portion.
Accompanying drawing 13 is the structural representation of separator 7 in accompanying drawing 9.
In figure, 1, housing；2, moving contact；3, static contact；4, arc-control device；5, connecting plate；6, arc striking piece；7, separator；8, current-limiting inductor；81, one wave part；9, insulating part；91, storage tank.
Detailed description of the invention
Embodiments of the present invention is further illustrated below in conjunction with the accompanying drawings:
Combined shown in 2-13 by Fig. 1, a kind of chopper, including housing 1, moving contact 2, static contact 3, arc-control device 4, connecting plate 5 and arc striking piece 6 it is provided with in described housing 1, described connecting plate 5 is connected with static contact 3, it is provided with separator 7 between described arc striking piece 6 and connecting plate 5, specifically, described separator its isolation, insulating effect, avoid the electric power of big electric current generation during short circuit that arc striking piece is directly connected with connecting plate, electric current is without current-limiting inductor so that current-limiting inductor is inoperative.Described arc-control device 4 is externally provided with at least one annular current-limiting inductor 8, and the two ends of described current-limiting inductor 8 are connected with arc striking piece 6, connecting plate 5 respectively.The invention has the beneficial effects as follows, when short circuit current occurs in load-side, breaker actuation, moving contact separates with static contact and produces electric arc.When electric current enters annular current-limiting inductor through electric arc, on the one hand current-limiting inductor increases line impedance and plays metering function, on the other hand the magnetic field that current-limiting inductor produces makes electric arc rapidly enter arc-control device, makes electric arc split rapidly, cools down and extinguish, thus reaches to improve the purpose of chopper breaking capacity.The present invention provides new current limliting breaking technology, and on the premise of not changing housing size, its interrupting performance is unrelated with slider material, high arc voltage can be obtained rapidly, improve chopper impedance, be allowed to electric arc and quickly extinguish, so that chopper obtains high breaking capacity and current limiting performance.And the present invention is during normal operation of circuit breaker, electric current is directly connected by dynamic and static contact, and now no current circulation in current-limiting inductor, product does not produce additional energy consumption.
Described arc-control device 4 is externally provided with two annular current-limiting inductors 8.Certainly, in real process, current-limiting inductor 8 can be one, two, three, four or more, can also be wound around multi-turn current-limiting inductor so that the impedance of product increases, improve the current limitation effect of product on the first insulation board.
Embodiment one: with reference to accompanying drawing 1-8, described current-limiting inductor 8 is bent to form one wave part 81 in the outer left and right of arc-control device 4.Such structure increases the resistance of current-limiting inductor, thus ensure that the current limiting capacity of chopper, and embodiment one is breaker of plastic casing.Specifically, it is provided with insulating part 9 between described arc-control device 4 and current-limiting inductor 8.The setting of insulating part in avoiding housing each parts by electric arc short circuit, affect properties of product.In particular, insulating part uses insulation gas exhausted material to make.So can be produced pressure reduction and the striking faster of magnetic blow-out effect of gas by insulating part, improve the breaking capacity of product.In particular, described insulating part 9 is provided with storage tank 91, and described arc-control device 4 inserts in storage tank 91.Such structure is easy to the installation of arc-control device, reduces the space in housing, it is to avoid electric arc leaks simultaneously.
Described current-limiting inductor 8 uses resistance material to make.Specifically, described resistance material uses the material such as copper and copper alloy, manganin, constantan (copper-manganese aluminum) alloy, nichrome, Aludirome, platinum base alloy, palladium-base alloy, gold-base alloy, silver-base alloy, steel and various steel alloys to make.Use to there is conductive material and there is certain resistance and make current-limiting inductor.While so making current-limiting inductor can produce bigger magnetic field, also due to bigger resistance, the electric current flowing through current-limiting inductor can be consumed, it is ensured that the breaking capacity of product and current limiting performance..
Described current-limiting inductor 8 is by welding, riveting or threaded and arc striking piece 6 Joint.Described current-limiting inductor 8 is by welding, riveting or threaded and connecting plate 5 Joint.Such structure is easy to the fixing of current-limiting inductor.
Embodiment one: with reference to accompanying drawing 1-8, electric arc is produced, extinguishing process illustrates: when short circuit current occurs in load-side, breaker actuation, moving contact separates with static contact and produces electric arc, at this moment circuital current by static contact 3 through electric arc, moving contact, circuit breaker internal conductor, breaker terminals flows to load, contact generation steam with insulating part by magnetic blow-out effect and electric arc before and after electric arc, to form pressure official post electric arc quickly move to arc striking piece 6, when electric arc one end, arc root moves to arc striking piece 6, circuital current is by connecting plate, static contact is through current-limiting inductor 8, arc striking component 6, electric arc, moving contact, circuit breaker internal conductor, terminal flows to load, now current-limiting inductor on the one hand increase line impedance plays metering function, on the other hand current-limiting inductor generation magnetic field makes electric arc quickly move to arc-control device direction.In electric arc enters arc-control device, electric arc is split by grid and cooling makes arc voltage rapid increase, and insulating part produces steam under high arc temperature effect and grid makes sufficiently cool cause of electric arc extinguish, and i.e. completes short circuit and disconnects.
Implement two: embodiment two is omnipotent breaker, with reference to accompanying drawing 9-13, electric arc is produced, extinguishing process illustrates: when short circuit current occurs in load-side, breaker actuation, moving contact separates with static contact and produces electric arc, at this moment circuital current by static contact through electric arc, moving contact, copper litz wire, bus flows to load, electric arc is made quickly to move to arc striking piece by magnetic blow-out effect, when electric arc one end, arc root moves to arc striking piece, circuital current is by static contact, connecting plate, current-limiting inductor, arc striking piece, through electric arc, dynamic contact, circuit breaker internal conductor, bus flows to load, now current-limiting inductor on the one hand increase line impedance plays metering function, on the other hand current-limiting inductor generation magnetic field makes electric arc quickly move to arc-control device direction.In electric arc enters arc-control device, electric arc is split by grid and cooling makes arc voltage rapid increase, and grid makes sufficiently cool cause of electric arc extinguish, and i.e. completes circuit and disconnects.
Every technical staff's notice: although the present invention describes according to above-mentioned detailed description of the invention, but the invention thought of the present invention is not limited to that invention, the repacking of any utilization inventive concept, all will include in this patent scope of patent protection.
Claims (5)
- null1. a chopper，Including housing (1)，It is provided with moving contact (2) in described housing (1)、Static contact (3)、Arc-control device (4)、Connecting plate (5) and arc striking piece (6)，It is characterized in that: described connecting plate (5) is connected with static contact (3)，It is provided with separator (7) between described arc striking piece (6) and connecting plate (5)，Described arc-control device (4) is externally provided with at least one annular current-limiting inductor (8)，The two ends of described current-limiting inductor (8) respectively with arc striking piece (6)、Connecting plate (5) is connected，Described current-limiting inductor (8) is bent to form one wave part (81) in arc-control device (4) left and right outward，It is provided with insulating part (9) between described arc-control device (4) and current-limiting inductor (8)，Described insulating part (9) is provided with storage tank (91)，Described arc-control device (4) inserts in storage tank (91)，Two pins of described arc-control device (4) insert in the storage tank (91) on two insulating parts (9) respectively.
- A kind of chopper the most according to claim 1, it is characterised in that described arc-control device (4) is externally provided with two annular current-limiting inductors (8).
- A kind of chopper the most according to claim 1, it is characterised in that described current-limiting inductor (8) uses resistance material to make.
- A kind of chopper the most according to claim 1, it is characterised in that described current-limiting inductor (8) is by welding, riveting or threaded and arc striking piece (6) Joint.
- A kind of chopper the most according to claim 1, it is characterised in that described current-limiting inductor (8) is by welding, riveting or threaded and connecting plate (5) Joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410618325.6A CN104347327B (en) | 2014-11-06 | 2014-11-06 | A kind of chopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410618325.6A CN104347327B (en) | 2014-11-06 | 2014-11-06 | A kind of chopper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104347327A CN104347327A (en) | 2015-02-11 |
| CN104347327B true CN104347327B (en) | 2016-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410618325.6A Active CN104347327B (en) | 2014-11-06 | 2014-11-06 | A kind of chopper |
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| Country | Link |
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| CN (1) | CN104347327B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108074764A (en) * | 2018-01-11 | 2018-05-25 | 上海良信电器股份有限公司 | A kind of limitation arc path module of rotary separation switch |
| CN113517163B (en) * | 2021-07-23 | 2023-02-28 | 西安理工大学 | Strong air-blowing current-limiting type arc extinguish chamber of high-voltage circuit breaker |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4451718A (en) * | 1981-02-27 | 1984-05-29 | Mitsubishi Denki Kabushiki Kaisha | Circuit breaker |
| JP2000188031A (en) * | 1998-12-21 | 2000-07-04 | Terasaki Electric Co Ltd | Contact device of circuit breaker |
| JP5585374B2 (en) * | 2010-10-18 | 2014-09-10 | 三菱電機株式会社 | Circuit breaker |
| CN204144202U (en) * | 2014-11-06 | 2015-02-04 | 徐浩清 | A kind of circuit breaker |
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- 2014-11-06 CN CN201410618325.6A patent/CN104347327B/en active Active
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| Publication number | Publication date |
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| CN104347327A (en) | 2015-02-11 |
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