CN112908797A - Alternating current-direct current interchangeable circuit breaker - Google Patents
Alternating current-direct current interchangeable circuit breaker Download PDFInfo
- Publication number
- CN112908797A CN112908797A CN202110010447.7A CN202110010447A CN112908797A CN 112908797 A CN112908797 A CN 112908797A CN 202110010447 A CN202110010447 A CN 202110010447A CN 112908797 A CN112908797 A CN 112908797A
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- shell
- plate
- direct current
- arc
- Prior art date
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/36—Metal parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
Landscapes
- Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
An AC/DC interchangeable circuit breaker. The method is characterized in that: the two sides of the arc striking plate are provided with iron plates, an installation part for installing magnetic steel is arranged in the shell, the installation part is positioned on the outer side of the arc striking plate and between the two iron plates, and the magnetic steel can be installed in the installation part and connected with the two iron plates. Its advantage lies in, sets up two iron plates in run-on board both sides to reserve an installation department between iron plate and be used for installing the magnet steel, for alternating current circuit breaker when not installing the magnet steel, then be direct current circuit breaker when the installation magnet steel, conveniently exchange generally, compare in the mounting structure of magnetic conduction board in conventional direct current circuit breaker moreover, the structure is simpler, and it is more convenient to install.
Description
Technical Field
The invention relates to a circuit breaker, in particular to an alternating current and direct current interchangeable circuit breaker.
Background
The circuit breaker generally divide into direct current circuit breaker and alternating current circuit breaker, both mainly distinguish that the arc control device of direct current circuit breaker is more complicated than the alternating current circuit breaker, because in the direct current circuit because the size and the direction of direct current do not change along with time, do not have the natural zero crossing, so the electric arc that produces when breaking is big, in case can not effective arc extinguishing, not only can not effectual outage immediately because of the effect of electric arc, and the circuit breaker also is burnt out easily, therefore direct current circuit breaker is higher to the arc extinguishing requirement, can't directly use alternating current circuit breaker.
In an alternating current circuit breaker, an arc extinguishing device of the alternating current circuit breaker only needs to comprise an arc extinguishing chamber and an arc striking plate, and electric arcs generated by the disjunction of a moving contact and a static contact enter the arc extinguishing chamber through the arc striking plate to extinguish the arc.
In a direct current circuit breaker, on the basis of an arc extinguishing device of an alternating current circuit breaker, magnetic conductive plates are further added on two sides of an arc striking plate, and the two magnetic conductive plates are integrally formed through a connecting plate to form a U-shaped loop, so that the effect of magnetic arc blowing is further achieved, and therefore, electric arcs generated by breaking of a moving contact and a static contact can be blown to an arc extinguishing chamber quickly, arc extinguishing performance is improved, and the direct current circuit breaker is suitable for a direct current circuit.
However, in the existing circuit breaker, the alternating current circuit breaker does not need to be provided with a magnetic conductive plate, the structure of the alternating current circuit breaker and the structure of the direct current circuit breaker cannot be exchanged and used universally, and in the existing direct current circuit breaker, the magnetic conductive plate is inconvenient to install and low in assembly work efficiency.
Disclosure of Invention
In order to overcome the defects of the background art, the invention provides a circuit breaker with alternating current and direct current interchangeable.
The technical scheme adopted by the invention is as follows: an alternating current-direct current interchangeable circuit breaker comprises a shell and an arc extinguishing mechanism arranged in the shell; the arc extinguishing mechanism comprises an arc extinguishing chamber and an arc striking plate; the method is characterized in that: the two sides of the arc striking plate are provided with iron plates, an installation part for installing magnetic steel is arranged in the shell, the installation part is positioned on the outer side of the arc striking plate and between the two iron plates, and the magnetic steel can be installed in the installation part and connected with the two iron plates.
The casing includes the first shell and the second shell of two looks adaptations, the installation department is including corresponding the reservation groove that sets up on first shell and second shell inner wall.
The preformed groove is the U type groove of opening towards the run-on plate direction, iron plate protrusion has the contact site, the contact site stretches into in the preformed groove through the opening.
And a gas production plastic sheet is arranged between the inner side of the iron plate and the arc striking plate.
The gas production plastic sheet, the iron plate and the shell are fixedly inserted through the shaft holes.
When the magnetic steel is not placed, the two iron plates and the arc striking plate form a U-shaped structure together, the arc generated by breaking is isolated between the two iron plates, the arc striking plate guides the arc into the arc extinguishing chamber to realize arc extinguishing, and the arc striking plate can be used as an alternating current circuit breaker for an alternating current circuit; when the installation magnet steel, two iron plates can be magnetized by the magnet steel, and one end is the N utmost point, and the other end is the S utmost point, and it can produce the effect of a magnetism blowout to the electric arc that divides disconnected production, and the cooperation striking plate blows electric arc to the explosion chamber fast and carries out the arc extinguishing, improves arc extinguishing performance by a wide margin, and it can regard as direct current circuit breaker to be used for direct current circuit this moment.
The invention has the beneficial effects that: set up two iron plates in run-on board both sides to reserve an installation department between iron plate and be used for installing the magnet steel, for alternating current circuit breaker when not installing the magnet steel, then be direct current circuit breaker when installation magnet steel, it is general to make things convenient for the alternating current-direct current to exchange, compares the mounting structure of magnetic conduction board in conventional direct current circuit breaker moreover, and the structure is simpler, and it is more convenient to install.
Drawings
Fig. 1 is a schematic structural diagram of a circuit breaker according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a first housing according to an embodiment of the invention.
Fig. 3 is a schematic structural diagram of an iron block according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a gassing plastic sheet according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of the circuit breaker according to the embodiment of the invention, in which the iron plate and the gas generating plastic sheet on one side are hidden and no magnetic steel is installed.
Fig. 6 is an enlarged schematic view of a point a in fig. 5.
Fig. 7 is a schematic structural diagram of the circuit breaker according to the embodiment of the invention, after an iron plate and a gas generating plastic sheet on one side of the circuit breaker are hidden, and magnetic steel is mounted.
Fig. 8 is an enlarged schematic view at B in fig. 7.
Fig. 9 is a schematic structural diagram of an arc extinguishing mechanism according to an embodiment of the invention.
Detailed Description
The embodiments of the invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1-4, an alternating current-direct current interchangeable circuit breaker includes a housing 1 and an arc extinguishing mechanism 2 installed in the housing 1, where the arc extinguishing mechanism 2 includes an arc extinguishing chamber 21 and an arc striking plate 22, iron plates 3 are disposed on two sides of the arc striking plate 22, and a gas generating plastic sheet 5 is disposed between the iron plates 3 and the arc striking plate 22.
The housing 1 generally includes two first shells and two second shells that are matched with each other, and the first shells and the second shells have substantially the same position structure corresponding to the arc extinguishing mechanism 2, and are correspondingly provided with a preformed groove 11, a first mounting shaft 12, and a first mounting hole 13. The preformed groove 11 is a U-shaped groove with an opening facing the direction of the arc ignition plate 22.
The plastic aerogenerator pieces 5 are provided with a second mounting hole 51 and a second mounting shaft 52 which are respectively matched with the first mounting shaft 12 and the first mounting hole 13, and the plastic aerogenerator pieces 5 are fixedly arranged on the first shell or the second shell through interference fit between shaft holes.
The iron plate 3 is provided with mounting grooves or mounting holes corresponding to the first mounting shaft 12 and the second mounting shaft 52, the iron plate 3 is fixedly clamped between the aerogenerator plastic sheet 5 and the first shell or the second shell, the iron plate 3 protrudes with a contact part 31, and the contact part 31 extends into the preformed groove 11 through an opening of the preformed groove 11.
As shown in fig. 5-6, no magnetic steel is installed in the pre-groove 11, the iron plates 3 on both sides of the arc striking plate 22 are independent of each other, the two iron plates 3 and the arc striking plate 22 form a U-shaped structure together, when arc extinguishing works, an arc generated by breaking is separated between the two iron plates, the arc striking plate guides the arc into the arc extinguishing chamber to realize arc extinguishing, and at this time, the arc extinguishing chamber can be used as an ac circuit breaker for an ac circuit, but cannot be used for a dc circuit.
As shown in fig. 7-9, the magnetic steel 4 is installed in the pre-groove 11, two ends of the magnetic steel 4 are respectively inserted into the pre-grooves 11 of the first shell and the second shell and respectively contacted with the two iron blocks 3, so that the two iron blocks 3 are magnetized by the magnetic steel 4, one end is an N pole, the other end is an S pole, the two iron blocks 3 and the magnetic steel 4 together form a U-shaped magnetic conductive plate structure, when arc extinguishing work,
it can produce the effect of a magnetic blow to the electric arc of breaking disconnected production, and the cooperation striking plate blows electric arc to the explosion chamber fast and carries out the arc extinguishing, improves arc extinguishing performance by a wide margin, and it alright regard as direct current breaker to be used for direct current circuit this moment.
Adopt above-mentioned scheme, it sets up two iron plates in run-on board both sides to reserve an installation department that is used for installing the magnet steel between iron plate, for alternating current circuit breaker when not installing the magnet steel, then be direct current circuit breaker when installation magnet steel, realize on the basis of a circuit breaker, through simple change, alright realize the conversion of alternating current-direct current, the commonality is stronger, compares in the mounting structure of magnetic conductive plate in conventional direct current circuit breaker moreover, and the structure is simpler, and it is more convenient to install.
In addition, the iron plate is inserted and fixed through the shaft hole between the gas production plastic sheet 5 and the shell 1, so that the magnetic blow-out arc extinguishing effect is improved, and the installation is firmer and more reliable.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The skilled person should understand that: although the invention has been described in terms of the above specific embodiments, the inventive concept is not limited thereto and any modification applying the inventive concept is intended to be included within the scope of the patent claims.
Claims (5)
1. An alternating current and direct current interchangeable circuit breaker comprises a shell (1) and an arc extinguishing mechanism (2) arranged in the shell (1); the arc extinguishing mechanism (2) comprises an arc extinguishing chamber (21) and an arc striking plate (22); the method is characterized in that: the both sides of run-on plate (22) are equipped with iron plate (3), be provided with the installation department that is used for installing magnet steel (4) in casing (1), the installation department is located run-on plate (22) outside and is located between two iron plate (3), magnet steel (4) can be installed in the installation department and are connected with two iron plate (3).
2. The ac-dc interchangeable circuit breaker of claim 1, wherein: casing (1) includes the first shell and the second shell of two looks adaptations, the installation department is including corresponding preformed groove (11) of setting on first shell and second shell inner wall.
3. The ac-dc interchangeable circuit breaker of claim 2, wherein: reserve groove (11) are the U type groove of opening towards run-on plate (22) direction, iron plate (3) protrusion has contact site (31), contact site (31) stretch into in reserve groove (11) through the opening.
4. The ac-dc interchangeable circuit breaker of claim 1, wherein: a gas production plastic sheet (5) is arranged between the inner side of the iron plate (3) and the arc striking plate (22).
5. The AC/DC interchangeable circuit breaker as recited in claim 4, wherein: the gas production plastic sheet (5), the iron plate (3) and the shell (1) are inserted and fixed through the shaft holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110010447.7A CN112908797A (en) | 2021-01-06 | 2021-01-06 | Alternating current-direct current interchangeable circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110010447.7A CN112908797A (en) | 2021-01-06 | 2021-01-06 | Alternating current-direct current interchangeable circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112908797A true CN112908797A (en) | 2021-06-04 |
Family
ID=76112145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110010447.7A Withdrawn CN112908797A (en) | 2021-01-06 | 2021-01-06 | Alternating current-direct current interchangeable circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112908797A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101315838A (en) * | 2007-05-31 | 2008-12-03 | Abb股份有限公司 | Electric installation device with an arc blow-out assembly |
| EP2096657A1 (en) * | 2008-02-27 | 2009-09-02 | Schneider Electric Industries SAS | Device for protecting against voltage surges comprising selective disconnection means |
| CN203659776U (en) * | 2013-12-18 | 2014-06-18 | 乐星产电(无锡)有限公司 | Arc extinguishing device of breaker |
| CN104064417A (en) * | 2014-04-25 | 2014-09-24 | 博耳(宜兴)电力成套有限公司 | Clamping encapsulation structure for arc barriers |
| CN109192632A (en) * | 2018-11-06 | 2019-01-11 | 江苏凯隆电器有限公司 | A kind of small-sized DC breaker arc extinguishing structure |
-
2021
- 2021-01-06 CN CN202110010447.7A patent/CN112908797A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101315838A (en) * | 2007-05-31 | 2008-12-03 | Abb股份有限公司 | Electric installation device with an arc blow-out assembly |
| EP2096657A1 (en) * | 2008-02-27 | 2009-09-02 | Schneider Electric Industries SAS | Device for protecting against voltage surges comprising selective disconnection means |
| CN203659776U (en) * | 2013-12-18 | 2014-06-18 | 乐星产电(无锡)有限公司 | Arc extinguishing device of breaker |
| CN104064417A (en) * | 2014-04-25 | 2014-09-24 | 博耳(宜兴)电力成套有限公司 | Clamping encapsulation structure for arc barriers |
| CN109192632A (en) * | 2018-11-06 | 2019-01-11 | 江苏凯隆电器有限公司 | A kind of small-sized DC breaker arc extinguishing structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210604 |