CN201918339U - Multipolar direct-current circuit breaker with plastic shell - Google Patents
Multipolar direct-current circuit breaker with plastic shell Download PDFInfo
- Publication number
- CN201918339U CN201918339U CN2011200057092U CN201120005709U CN201918339U CN 201918339 U CN201918339 U CN 201918339U CN 2011200057092 U CN2011200057092 U CN 2011200057092U CN 201120005709 U CN201120005709 U CN 201120005709U CN 201918339 U CN201918339 U CN 201918339U
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- Prior art keywords
- permanent magnet
- circuit breaker
- contact
- magnetic conductive
- control device
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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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Abstract
A multipolar direct-current circuit breaker with a plastic shell resolves problems that in the prior art, arcs caused by direct-current faults are difficult to be separated, and operating voltage is lower. The multipolar direct-current circuit breaker comprises the shell, a contact system, an overload protecting release, a short circuit protecting release, a wiring board and an arc extinguishing chamber of various poles, and the contact system, the overload protecting release, the short circuit protecting release, the wiring board and the arc extinguishing chamber of various poles are assembled in the shell. The technical scheme includes that the shell is made of bulk moulding compound, a permanent magnet magnetic quenching mechanism is arranged at a single breaking point between a movable contact and a static contact, a permanent magnet is assembled at the bottom of a base, upper ends of two magnetic conducting plates are respectively arranged on two sides, which correspond to arc generating positions, of a contact room of the arc extinguishing chamber, lower ends of the magnetic conducting plates are inserted in the base, and two ends of the permanent magnet are respectively in seamless attraction connection with the ends of the two magnetic conducting plates. The multipolar direct-current circuit breaker is reasonable in design, compact in structure and small in volume, rated operational voltage of a direct-current circuit breaker even can achieve kilovolt level, and accordingly the multipolar direct-current circuit breaker meets requirements of isolation and protection of battery packs of public transportation electric motor coaches and photovoltaic power generation and wind power generation systems.
Description
Technical field
The utility model relates to a kind of low-voltage electrical apparatus switch, particularly a kind of on the architecture basics of the existing contact system that exchanges plastic casing circuit breaker single-break improved multipole direct current plastic casing circuit breaker.Be mainly used in rated operational voltage and can reach power supply switching and the circuit control place of 600V to kilovolt level.
Background technology
At present, the power supply that is mainly used in industrial and mineral traction locomotive, power plant, storage battery switch and the kind of the dc circuit breaker of circuit control more, mostly be the two poles of the earth greatly, the two poles of the earth or generally be referred to as multipole more than the two poles of the earth.General the two poles of the earth (2P) circuit breaker has two contact rooms, two arc control device, and four utmost points (4P) circuit breaker has four contact rooms, four arc control device.Traditional dc circuit breaker mainly comprises contact system, thermo magnetic trip release system, binding post, plastic casing, cover cap and the handle operation mechanism of single-break.Its structure be mostly on the architecture basics of the AC circuit breaker that Japan introduces, carry out improved.Because galvanic size and Orientation is normally invariable, unlike cycle of electric current of alternating current natural zero-crossing is arranged twice, can only lean on elongation electric arc, enter arc control device electric arc is cooled off arc extinguishing.Such normal circuit breaker just is difficult to the electric arc that disjunction direct current fault produces, even normal running under rated voltage, rated current, the breaking capacity of electric arc also is not high, and electric elements are lower useful life.The operating voltage of the two poles of the earth dc circuit breaker that current market is seen mostly is DC250V greatly.Owing to greatly developed green energy resources such as wind energy, solar energy in recent years, traditional dc circuit breaker can't satisfy 600V to kilovolt demand of the dc circuit breaker of level.
The utility model content
The purpose of this utility model provide a kind of on the architecture basics of the existing contact system that exchanges plastic casing circuit breaker single-break improved multipole direct current plastic casing circuit breaker; the electric arc and the lower problem of operating voltage of the very difficult disjunction direct current fault generation of prior art existence have been solved; it is reasonable in design; compact conformation; volume is little; the rated operational voltage of dc circuit breaker even can reach kilovolt level, satisfy public transport with electric motor coach and photovoltaic generation and wind generator system as battery pack isolate, the requirement of protection.
The technical scheme that the utility model adopted is: this multipole direct current plastic casing circuit breaker comprises the shell that is made of the base and cover shell; the assembling contact system of mainly forming in the enclosure by moving contact and fixed contact; the overload protection release; the short-circuit protection release; terminal block; the arc control device of each utmost point; its technical essential is: described shell adopts BMC to make; single-break place between described moving contact and fixed contact is provided with the permanent magnet magnetic quenching mechanism that the electric arc that produces is introduced described arc control device; the set of permanent magnets of described permanent magnet magnetic quenching mechanism is contained in the bottom of described pedestal; the upper end branch of two magnetic conductive boards of described permanent magnet magnetic quenching mechanism is listed in the both sides of corresponding electric arc generation place in contact room of described arc control device; insert in the described pedestal lower end of described magnetic conductive board; and the two ends of described permanent magnet are connected respectively with the seamless absorption in the end of two described magnetic conductive boards; be exposed to the described magnetic conductive board in the described contact room; protected with thermal insulation barriers, and firm with epoxy sealing.
The set of permanent magnets of described permanent magnet magnetic quenching mechanism is contained in the base bottom of the fixedly fixed contact of described arc control device; described permanent magnet periphery covers thermal insulation barriers; two magnetic conductive boards of described permanent magnet magnetic quenching mechanism insert respectively in the through hole of pedestal both sides of fixedly fixed contact of corresponding electric arc generation place in contact room of described arc control device; the lower end of two described magnetic conductive boards is connected with the seamless absorption of difference of the two ends of described permanent magnet; described magnetic conductive board is protected with thermal insulation barriers, and firm with epoxy sealing.
The polarity of the permanent magnet of the described permanent magnet magnetic quenching mechanism of each utmost point is distributed as: the polarity of first utmost point permanent magnet is N-S, and the polarity of second utmost point permanent magnet is S-N, and the polarity of the 3rd utmost point permanent magnet is N-S, and the polarity of four-pole permanent magnet body is S-N.
Advantage and the good effect that the utlity model has are: because the utility model is improved on the architecture basics that has the contact system that exchanges plastic casing circuit breaker single-break now; and comprise the permanent magnet magnetic quenching mechanism that the permanent magnet that is assembled in base bottom and the seamless magnetic conductive board of being protected with thermal insulation barriers that is adsorbed on permanent magnet the two poles of the earth constitute in each utmost point single-break setting; to improve the direct current arc extinguishing ability of each utmost point single-break contact; with multipole single-break series connection arc extinguishing technology; the electric arc branch that the very difficult breath that high voltage is produced at a single-break goes out is finished jointly by a plurality of breakpoints; so it is reasonable in design; compact conformation; volume is little; significantly improved the rated operational voltage of dc circuit breaker; even can reach kilovolt level, satisfied public transport and isolated as battery pack with electric motor coach and photovoltaic generation and wind generator system; the requirement of protection.When producing electric arc between the moving contact of each utmost point single-break and the fixed contact, in the magnetic field that electric arc forms because of the magnetic conductive board at permanent magnet the two poles of the earth of being in permanent magnet magnetic quenching mechanism, can fast electric arc be divided be blown into arc control device by a plurality of breakpoints and cool off arc extinguishing.Therefore, it has fundamentally solved the electric arc and the lower problem of operating voltage of the very difficult disjunction direct current fault generation of prior art existence.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is a kind of I type structural representation of the present utility model;
Fig. 2 is the cutaway view of Fig. 1 along the A-A line;
Fig. 3 is a kind of II type structural representation of the present utility model;
Fig. 4 is the cutaway view of Fig. 3 along the B-B line.
Sequence number explanation among the figure: 1 pedestal, 2 permanent magnets, 3 thermal insulation barriers, 4 terminal blocks, 5 magnetic conductive boards, 6 fixed contacts, 7 retaining arc plates, 8 moving contacts, 9 arc control device, 10 lid shells, 11 handle operation mechanisms.
Embodiment
Describe concrete structure of the present utility model in detail according to Fig. 1～4.This multipole direct current plastic casing circuit breaker is improved on the architecture basics of the contact system of existing interchange plastic casing circuit breaker single-break; it comprises the shell that is made of pedestal 1 and lid shell 10, is assembled in arc control device 9 and the permanent magnet magnetic quenching mechanism of branch by the contact system of mainly being made up of moving contact 8 and fixed contact 6 in a plurality of breakpoints, overload protection release, short-circuit protection release, terminal block 4, each utmost point.Wherein the specification of main member should meet the requirement of relevant criterion, and shell adopts BMC (be DMC, be also referred to as the unsaturated polyester (UP) BMC) to make.Permanent magnet magnetic quenching mechanism comprises a permanent magnet 2 and two magnetic conductive boards 5, is arranged on the single-break place between moving contact 8 and the fixed contact 6, so that the electric arc that produces is introduced in the arc control device 9.This permanent magnet magnetic quenching mechanism can be according to actual needs and may, be arranged to I type structure (shown in Fig. 1-2) by specification, the shape of arc control device 9, also can be arranged to II type structure (as shown in Figure 3-4).Its I type structure is mainly used in the less arc control device of the useful space 9.The permanent magnet 2 of this I type structure is assembled in the bottom of pedestal 1, and the upper end branch of two magnetic conductive boards 5 is listed in the both sides of corresponding electric arc generation place in contact room of arc control device 9.Insert in the pedestal 1 both sides of lower end edge terminal block 4 cross sections of magnetic conductive board 5, and the two ends of the permanent magnet 2 that is fixed on pedestal 1 bottom are connected with the seamless absorption in end of stretching out pedestal 1 bottom of two magnetic conductive boards 5 respectively.In order to reduce the influence that electric arc produces high temperature, with being exposed to the part of the magnetic conductive board 5 in the contact room, protected with thermal insulation barriers 3, and firm with epoxy sealing.Its II type structure is mainly used in the bigger arc control device of the useful space 9.The permanent magnet 2 of this II type structure is assembled in the space of base bottom of fixedly fixed contact 6 of arc control device 9, in order to reduce the influence that electric arc produces high temperature, covers thermal insulation barriers in permanent magnet 2 peripheries and is protected.Two magnetic conductive boards 5 insert respectively in the through hole of pedestal both sides of fixedly fixed contact 6 of corresponding electric arc generation place in contact room of arc control device 9, make the lower end of two magnetic conductive boards 5 distinguish seamless absorption with the two ends of permanent magnet 2 and are connected.In order to reduce the influence that electric arc produces high temperature, magnetic conductive board 5 usefulness thermal insulation barriers 3 are protected, and firm with epoxy sealing.The polarity of the permanent magnet of the described permanent magnet magnetic quenching mechanism of each utmost point is distributed as: the polarity of first utmost point permanent magnet is N-S, and the polarity of second utmost point permanent magnet is S-N, and the polarity of the 3rd utmost point permanent magnet is N-S.The polarity of four-pole permanent magnet body is S-N.
The installation of this multipole direct current plastic casing circuit breaker, debugging and use are all basic identical with existing dc circuit breaker.
Claims (3)
1. multipole direct current plastic casing circuit breaker; comprise the shell that constitutes by the base and cover shell; the assembling contact system of mainly forming in the enclosure by moving contact and fixed contact; the overload protection release; the short-circuit protection release; terminal block; the arc control device of each utmost point; it is characterized in that: described shell adopts BMC to make; single-break place between described moving contact and fixed contact is provided with the permanent magnet magnetic quenching mechanism that the electric arc that produces is introduced described arc control device; the set of permanent magnets of described permanent magnet magnetic quenching mechanism is contained in the bottom of described pedestal; the upper end branch of two magnetic conductive boards of described permanent magnet magnetic quenching mechanism is listed in the both sides of corresponding electric arc generation place in contact room of described arc control device; insert in the described pedestal lower end of described magnetic conductive board; and the two ends of described permanent magnet are connected respectively with the seamless absorption in the end of two described magnetic conductive boards; be exposed to the described magnetic conductive board in the described contact room; protected with thermal insulation barriers, and firm with epoxy sealing.
2. multipole direct current plastic casing circuit breaker according to claim 1; it is characterized in that: the set of permanent magnets of described permanent magnet magnetic quenching mechanism is contained in the base bottom of the fixedly fixed contact of described arc control device; described permanent magnet periphery covers thermal insulation barriers; two magnetic conductive boards of described permanent magnet magnetic quenching mechanism insert respectively in the through hole of pedestal both sides of fixedly fixed contact of corresponding electric arc generation place in contact room of described arc control device; the lower end of two described magnetic conductive boards is connected with the seamless absorption of difference of the two ends of described permanent magnet; described magnetic conductive board is protected with thermal insulation barriers, and firm with epoxy sealing.
3. multipole direct current plastic casing circuit breaker according to claim 1, it is characterized in that: the polarity of the permanent magnet of the described permanent magnet magnetic quenching mechanism of each utmost point is distributed as: the polarity of first utmost point permanent magnet is N-S, the polarity of second utmost point permanent magnet is S-N, the polarity of the 3rd utmost point permanent magnet is N-S, and the polarity of four-pole permanent magnet body is S-N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200057092U CN201918339U (en) | 2011-01-11 | 2011-01-11 | Multipolar direct-current circuit breaker with plastic shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200057092U CN201918339U (en) | 2011-01-11 | 2011-01-11 | Multipolar direct-current circuit breaker with plastic shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201918339U true CN201918339U (en) | 2011-08-03 |
Family
ID=44418130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200057092U Expired - Lifetime CN201918339U (en) | 2011-01-11 | 2011-01-11 | Multipolar direct-current circuit breaker with plastic shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201918339U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262985A (en) * | 2011-01-11 | 2011-11-30 | 沈阳二一三控制电器制造有限公司 | Multipolar DC molded case circuit breaker |
| WO2017185523A1 (en) * | 2016-04-29 | 2017-11-02 | 浙江英洛华新能源科技有限公司 | High-voltage direct current relay arc baffle structure |
-
2011
- 2011-01-11 CN CN2011200057092U patent/CN201918339U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262985A (en) * | 2011-01-11 | 2011-11-30 | 沈阳二一三控制电器制造有限公司 | Multipolar DC molded case circuit breaker |
| CN102262985B (en) * | 2011-01-11 | 2014-02-26 | 沈阳二一三控制电器制造有限公司 | Multipolar DC molded case circuit breaker |
| WO2017185523A1 (en) * | 2016-04-29 | 2017-11-02 | 浙江英洛华新能源科技有限公司 | High-voltage direct current relay arc baffle structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110803 Effective date of abandoning: 20140226 |
|
| RGAV | Abandon patent right to avoid regrant |