CN206412302U - A kind of big thread off is opened away from direct current breaker of plastic casing - Google Patents
A kind of big thread off is opened away from direct current breaker of plastic casing Download PDFInfo
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- CN206412302U CN206412302U CN201621170082.5U CN201621170082U CN206412302U CN 206412302 U CN206412302 U CN 206412302U CN 201621170082 U CN201621170082 U CN 201621170082U CN 206412302 U CN206412302 U CN 206412302U
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- contact
- arc
- direct current
- plastic casing
- pieces
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- 230000003068 static effect Effects 0.000 claims abstract description 35
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052709 silver Inorganic materials 0.000 claims abstract description 19
- 239000004332 silver Substances 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000000171 quenching effect Effects 0.000 claims abstract description 14
- 238000010791 quenching Methods 0.000 claims abstract description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000004888 barrier function Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 3
- 238000010891 electric arc Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model is related to a kind of big thread off and opened away from direct current breaker of plastic casing, including pedestal (1), and it is arranged on the contact system (4) on pedestal (1), arc quenching system (5), operating system (3) and overload/short-circuit protection electrical apparatus release (2), described contact system (4) includes moving contact (41) and static contact (43), described moving contact (41) is in lightning symbol shape, its one end is provided with the dynamic silver point (42) for being used for contacting static contact (43), other end attended operation mechanism, and divide-shut brake is realized by operating mechanism drive.Compared with prior art, the utility model coordinates the adjustment of moving contact and stationary contact head shapes by adjusting the locating dimension of tripping, very big dropout can be provided to open away from alloing its reliable disjunction direct-current short circuit fault current, simultaneously, structural change degree is small, and arc blow-out arc quenching effect is excellent etc..
Description
Technical field
The utility model is related to a kind of breaker, is opened more particularly, to a kind of big thread off away from direct current breaker of plastic casing.
Background technology
With the popularization of the development of present DC application, especially photovoltaic industry, the demand of dc circuit breaker is more and more,
But due to direct current arc extinguishing and the essential distinction for exchanging arc quenching principle so that AC circuit breaker is difficult to be applied directly to straight-flow system,
Necessary improvement must be carried out.
Alternating current has current zero-crossing point twice in a cycle, it is possible to use the moment of current over-zero extinguishes rapidly
Electric arc, but DC current does not have current zero-crossing point, by rapid elongation and cooling electric arc arc voltage can only be made to exceed power supply electricity
Pressure, then by arc extinction, so blow-out is difficult.This is accomplished by dc circuit breaker, and there is larger dropout to open away from can be quick
Break electric arc.But traditional breaker is difficult the requirement for meeting large opening.
Existing breaker is generally as shown in Figure 10, and its movable contact includes a straight-arm, in the dynamic silver of end welding of straight-arm
Point, and in order to which beneficial to arc motion, stationary contact generally uses U-shaped formula structure.But with the microminaturization of photovoltaic component
Development trend, the size of current breaker would generally be smaller, if still using breaker structure as shown in Figure 10
Words, will to open away from too small between dynamic and static contact so that in trip operation, be unfavorable for breaking electric arc.
Utility model content
The purpose of this utility model is exactly the defect in order to overcome above-mentioned prior art presence and provides a kind of big thread off and open
Away from direct current breaker of plastic casing.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of big thread off is opened away from direct current breaker of plastic casing, including pedestal, and contact system, the arc extinguishing being arranged on pedestal
System, operating system and overload/short-circuit protection electrical apparatus release, described contact system include moving contact and static contact, and described is dynamic
Contact is in lightning symbol shape, and its one end, which is provided with, is used to contacting the dynamic silver point of static contact, other end attended operation mechanism, and by operating
Mechanism drives and realizes divide-shut brake.
It is preferred that, described static contact is in tabular, and its upper surface is provided with quiet silver point；During combined floodgate, quiet silver point is with moving
Silver point is contacted.
It is preferred that, described arc quenching system includes arc-chutes and arc-extinguish chamber, and described arc-chutes include being arranged on static contact
Upper two pieces of flash barriers, and the arc extinguishing grid pieces being disposed in an evenly spaced relation between two pieces of flash barriers, described arc-extinguish chamber include close
Two pieces of wallboards at the interval being arranged on static contact, one end of two pieces of wallboards also abuts the arc extinguishing grid pieces so that arc extinguishing
The moving contact that cover, arc-chutes and static contact three cooperatively form in the air chamber of a relative closure, breaker is in the air chamber
Interior motion.
It is furthermore preferred that described arc-extinguish chamber is the aerogenesis arc-extinguish chamber of the band being made up of gas exhausted material voluntarily aerogenesis function.
It is furthermore preferred that being also about being provided with annular bottom plate in the bottom of two pieces of wallboards, and formed with wallboard bottom with spacing work(
The clamping joint of energy, described static contact is provided with the buckling groove that the quiet silver point is matched and surrounded with the clamping joint；
During assembling, in clamping joint insertion buckling groove, arc-extinguish chamber is tightly connected with stationary contact.
It is furthermore preferred that on the premise of two pieces of wallboard gaps are not to influence moving contact motion, it is narrow as far as possible.
It is furthermore preferred that the two pieces of described one end of wallboard away from arc extinguishing grid pieces also both lateral sides stretch to form wing plate, it is described
Wing plate also contacted with the flash barrier of homonymy.
It is preferred that, described operating system includes detaining, latch again, tripping and link kinematics, and described moving contact is also
Bar linkage motion mechanism is connected, and is driven by bar linkage motion mechanism around its terminal rotation so that moving contact is indirectly with static contact
Touch or separate, realize divide-shut brake.Operating system uses existing operating system, and bar linkage motion mechanism is conventional in breaker
Five-bar mechanism.
It is furthermore preferred that being additionally provided with the travel limit track that radian is rotated for limiting moving contact in described tripping；
The radian and length of described travel limit track are met to be opened away from maximum between moving contact and static contact.
Compared with prior art, the utility model has advantages below：
(1) direct current breaker of plastic casing of the present utility model coordinates moving contact and stationary contact by adjusting the locating dimension of tripping
The adjustment of head shapes, can provide very big dropout and open away from alloing its reliable disjunction direct-current short circuit fault current.
(2) structure change degree is small：Compared to the dc circuit breaker used originally, the utility model only need to change it is dynamic,
The size of the shape of static contact and the travel limit track of tripping, it is maximized to remain original structure, so as to simplify
Production equipment cost etc..
(3) the utility model is in order that obtain arc quenching system equally energy arc blow-out arc quenching effect well, for quiet after improvement
Contact is also specially provided with new arc quenching system structure, by will be fitted close between arc-extinguish chamber, arc-chutes and static contact three,
So that the air chamber for the relative closure that an obturation effect is protruded is formed between three, beneficial to the air pressure and improvement improved in arc-chutes
The trend of air-flow, makes air-flow go out speed faster toward arc-chutes rear end, is more beneficial for quickly extinguishing electric arc.
(4) arc-extinguish chamber is made of gas exhausted material, adds the air pressure of the vertical plane of dynamic and static contact, so that more
Easily produce the air-flow for moving towards arc-chutes.
(5) narrow wallboard gap as far as possible so that gas exhausted material can be closer to electric arc, even if breaking current is very
It is small, it can also play a part of cooling down electric arc well.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is schematic cross-sectional view of the present utility model；
Fig. 3 is the structural representation of tripping of the present utility model；
Fig. 4 is the structural representation of moving contact of the present utility model；
Fig. 5 is the structural representation of static contact of the present utility model；
Fig. 6 is the structural representation of arc quenching system of the present utility model；
Fig. 7 is the schematic cross-sectional view of arc quenching system of the present utility model；
Fig. 8 is the structural representation of arc-extinguish chamber of the present utility model；
Fig. 9 is the structural representation of existing breaker；
Figure 10 is the cross section structure diagram of existing breaker；
Figure 11 is the structural representation of the tripping of existing breaker；
In figure, 1- pedestals, 2- overloads/short-circuit protection electrical apparatus release, 3- operating systems, 31- locks, 32- is detained again, and 33- is jumped
Button, 331- travel limit tracks, 34- bar linkage motion mechanisms, 4- contact systems, 41- moving contacts, 42- moves silver point, 43- stationary contacts
Head, the quiet silver points of 44-, 45- buckling grooves, 5- arc quenching systems, 51- arc-extinguish chambers, 511- wallboards, 512- wing plates, 513- annular bottom plates,
52- arc-chutes, 521- flash barriers, 522- arc extinguishing grid pieces.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of big thread off is opened away from direct current breaker of plastic casing, its structure as depicted in figs. 1 and 2, including pedestal 1, and setting
Contact system 4, arc quenching system 5, operating system 3 and overload/short-circuit protection electrical apparatus release 2 on pedestal 1, contact system 4 include
Moving contact 41 and static contact 43, as shown in figure 4, moving contact 41 is in lightning symbol shape, its one end, which is provided with, to be used to contact static contact 43
Dynamic silver point 42, other end attended operation mechanism, and by operating mechanism drive realize divide-shut brake, as shown in figure 5, static contact 43 is in
Tabular, quiet silver point 44 is provided with its upper surface；During combined floodgate, quiet silver point 44 is contacted with dynamic silver point 42.
As shown in Figure 6 to 8, arc quenching system 5 includes arc-chutes 52 and arc-extinguish chamber 51, and arc-chutes 52 include being arranged on stationary contact
Two pieces of flash barriers 521 on first 43, and the arc extinguishing grid pieces 522 being disposed in an evenly spaced relation between two pieces of flash barriers 521, arc-extinguish chamber 51
Including two pieces of wallboards 511 at the interval being tightly disposed on static contact 43, one end of two pieces of wallboards 511 also abuts arc extinguishing grid pieces
522 so that arc-extinguish chamber 51, arc-chutes 52 and the three of static contact 43 are cooperatively formed in the air chamber of a relative closure, breaker
Moving contact 41 is i.e. in gas indoor sport.Arc-extinguish chamber 51 is the aerogenesis arc-extinguish chamber of the band being made up of gas exhausted material voluntarily aerogenesis function
51.The gap of two pieces of wallboards 511 is narrow as far as possible on the premise of not influenceing moving contact to move.In two pieces of wallboards 511
Bottom is also about being provided with annular bottom plate 513, and forms the clamping joint with limit function with the bottom of wallboard 511, sets on static contact 43
There is the buckling groove 45 that quiet silver point 44 is matched and surrounded with clamping joint；During assembling, clamping joint insertion buckling groove 45 in, arc-extinguish chamber 51 with
Stationary contact is tightly connected.The two pieces of one end of wallboard 511 away from arc extinguishing grid pieces 522 also both lateral sides stretch to form wing plate 512, wing plate
512 also contact with the flash barrier 521 of homonymy.
Shown in Figure 2, operating system 3 includes detaining 32, lock 31, tripping 33 and link kinematics, moving contact 41 again
Bar linkage motion mechanism 34 is also connected with, and is driven by bar linkage motion mechanism 34 around its terminal rotation so that moving contact 41 and stationary contact
Contact or separate between first 43, realize divide-shut brake.Operating system 3 uses existing operating system 3, bar linkage motion mechanism 34
For the five-bar mechanism commonly used in breaker.The travel limit that radian is rotated for limiting moving contact 41 is additionally provided with more tripping 33
Track 331；The radian and length of travel limit track 331 meet and opened between moving contact 41 and static contact 43 away from maximum.
As shown in Figure 9 and Figure 10, its critical piece is such as the present embodiment, also including base for the structure of existing breaker
Seat, operating system, contact system, overload/short-circuit protection electrical apparatus release and arc quenching system, wherein, because static contact is used often
U-shaped static contact, it extinguishes beneficial to arc motion into arc-chutes, and moving contact is the straight-arm shape supporting with it, moreover, its
As shown in figure 11, discovery that can be apparent, the travel limit track 331 of the tripping is too small, the separating brake point at two ends for tripping shape
Point degree of scatter is smaller with closing a floodgate, so as to cause the dynamic and static clearance between open contacts of existing breaker to be 21cm or so to the maximum, it appears have
Point is small.And breaker of the present utility model, by adjusting the locating dimension of tripping, coordinate moving contact and the tune of stationary contact head shapes
It is whole, can provide very big dropout open away from (32cm) left and right, and then compared to existing breaker can reliably be segmented direct-current short circuit and
Fault current.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using practicality
It is new.Person skilled in the art obviously can easily make various modifications to these embodiments, and illustrating herein
General Principle be applied in other embodiment without passing through performing creative labour.Therefore, the utility model is not limited to above-mentioned
Embodiment, those skilled in the art disclose according to of the present utility model, do not depart from improvement that the utility model category made and
Modification all should be within protection domain of the present utility model.
Claims (9)
1. a kind of big thread off is opened away from direct current breaker of plastic casing, including pedestal (1), and the contact system being arranged on pedestal (1)
(4), arc quenching system (5), operating system (3) and overload/short-circuit protection electrical apparatus release (2), described contact system (4) includes dynamic touch
Head (41) and static contact (43), it is characterised in that described moving contact (41) is in lightning symbol shape, and its one end, which is provided with, to be used to contact
The dynamic silver point (42) of static contact (43), other end attended operation mechanism, and divide-shut brake is realized by operating mechanism drive.
2. a kind of big thread off according to claim 1 is opened away from direct current breaker of plastic casing, it is characterised in that described static contact
(43) it is in tabular, quiet silver point (44) is provided with its upper surface；During combined floodgate, quiet silver point (44) contacts with dynamic silver point (42).
3. a kind of big thread off according to claim 2 is opened away from direct current breaker of plastic casing, it is characterised in that described arc extinguishing system
Unite (5) include arc-chutes (52) and arc-extinguish chamber (51), described arc-chutes (52) including be arranged on upper two pieces of static contact (43) every
Arc plate (521), and the arc extinguishing grid pieces (522) being disposed in an evenly spaced relation between two pieces of flash barriers (521), described arc-extinguish chamber
(51) the two pieces of wallboards (511) at interval being tightly disposed on static contact (43) are included, one end of two pieces of wallboards (511) is also
Against the arc extinguishing grid pieces (522) so that arc-extinguish chamber (51), arc-chutes (52) and static contact (43) three cooperatively form a phase
To the air chamber of closing, the moving contact (41) in breaker is i.e. in the gas indoor sport.
4. a kind of big thread off according to claim 3 is opened away from direct current breaker of plastic casing, it is characterised in that described arc-extinguish chamber
(51) be the band that is made up of gas exhausted material voluntarily aerogenesis function aerogenesis arc-extinguish chamber (51).
5. a kind of big thread off according to claim 3 is opened away from direct current breaker of plastic casing, it is characterised in that in two pieces of wallboards
(511) bottom is also about being provided with annular bottom plate (513), and forms the clamping joint with limit function, institute with wallboard (511) bottom
The static contact (43) stated is provided with the buckling groove (45) that the quiet silver point (44) is matched and surrounded with the clamping joint；
During assembling, in clamping joint insertion buckling groove (45), arc-extinguish chamber (51) is tightly connected with stationary contact.
6. a kind of big thread off according to claim 5 is opened away from direct current breaker of plastic casing, it is characterised in that two pieces of described walls
Plate (511) stretches to form wing plate (512) away from one end also both lateral sides of arc extinguishing grid pieces (522), described wing plate (512) also with
Flash barrier (521) contact of homonymy.
7. a kind of big thread off according to claim 3 is opened away from direct current breaker of plastic casing, it is characterised in that two pieces of described walls
The gap of plate (511) is met：It does not just influence the motion of moving contact.
8. a kind of big thread off according to claim 1 is opened away from direct current breaker of plastic casing, it is characterised in that described operation system
System (3) includes detaining (32), lock (31), tripping (33) and link kinematics again, and described moving contact (41) is also connected with connecting rod
Motion (34), and driven by bar linkage motion mechanism (34) around its terminal rotation so that moving contact (41) and static contact
(43) contact or separate between, realize divide-shut brake.
9. a kind of big thread off according to claim 8 is opened away from direct current breaker of plastic casing, it is characterised in that described tripping
(33) the travel limit track that radian is rotated for limiting moving contact (41) is additionally provided with；
The radian and length of described travel limit track meet and opened between moving contact (41) and static contact (43) away from maximum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621170082.5U CN206412302U (en) | 2016-10-26 | 2016-10-26 | A kind of big thread off is opened away from direct current breaker of plastic casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621170082.5U CN206412302U (en) | 2016-10-26 | 2016-10-26 | A kind of big thread off is opened away from direct current breaker of plastic casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206412302U true CN206412302U (en) | 2017-08-15 |
Family
ID=59549334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621170082.5U Active CN206412302U (en) | 2016-10-26 | 2016-10-26 | A kind of big thread off is opened away from direct current breaker of plastic casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206412302U (en) |
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2016
- 2016-10-26 CN CN201621170082.5U patent/CN206412302U/en active Active
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