CN101794685B - Decompression repulsion dynamic breaking device of breaker - Google Patents
Decompression repulsion dynamic breaking device of breaker Download PDFInfo
- Publication number
- CN101794685B CN101794685B CN2010101100282A CN201010110028A CN101794685B CN 101794685 B CN101794685 B CN 101794685B CN 2010101100282 A CN2010101100282 A CN 2010101100282A CN 201010110028 A CN201010110028 A CN 201010110028A CN 101794685 B CN101794685 B CN 101794685B
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- moving contact
- decompression
- support arm
- connecting rod
- axle
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- 230000006837 decompression Effects 0.000 title claims abstract description 32
- 230000005520 electrodynamics Effects 0.000 abstract description 9
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 description 11
- 238000010891 electric arc Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000009191 jumping Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The invention relates to a decompression repulsion dynamic breaking device of a breaker, comprising a moving contact (1), a contactor (2), a moving contact rotating shaft and the like, wherein the moving contact (1) and a spring (25) are arranged in the middle; both sides of the decompression repulsion dynamic breaking device are provided with inner supports (4)having the same structures and symmetrical distribution, decompression levers (18) and connecting rods A (6), outer supports (13), latching plates (16) and connecting rods B (22) as well as connecting rods C (23) and outer most baffles(21) from the inside to the outside in sequence; the moving contact (1) is riveted with the inner supports (4) of both sides; the inner supports are provided with groove-shaped shaft holes (5) of a shaft A and circular shaft holes of a short shaft B; the inner supports, the outer supports, the connecting rods A (6) and the spring (25) are connected in series; the outer supports (13) and the spring (25) are connected in series by a shaft C; relevant components are connected in series respectively by a shaft C and a shaft E; the formed device is assorted with a fixed contact in the breaker; when short-circuit current causes an electro-dynamic repulsion force, the moving contact and the fixed contact can be rapidly effectively separated. The breaking device has high sensitivity, short arcingtime and long service lives of the contacts.
Description
Technical field
Moving contact and matable assembly thereof that to the present invention relates to a kind of circuit emergency protective device be circuit breaker specifically are a kind of break-up devices of scolding power through decompression with relative increase.
Background technology
Circuit breaker is mainly used in the low-voltage distributing line protection system, and when short-circuit current took place, cutting off the electricity supply was able to protection.The circuit breaker of continuing to use for many years is the single-break form, no matter one pole or multipole circuit breaker, the end pressure that all has the operating mechanism of five link type that the contact is applied; When circuit was short-circuited, the electrodynamic repulsion force that short circuit current produces overcomes end pressure separated dynamic and static contact, yet this separation receives the compacting of the end pressure that head applies; Can only make two contacts on the dynamic/static contact produce a slit, cause the generation of electric arc, because of the linkage course of action; Arcing time is long; Cause the galvanic corrosion loss of contact, reduced useful life, even scrapped.For reducing this loss, be to lean on arc control device to inhale under the effect of arc power electric arc suction grid sheet and be divided into short arc and extinguish all the time.On the other hand, also need wait for the head tripping after, the end pressure comprehensive solution on the moving contact, dynamic and static contact could effectively break away from.That is to say when short trouble takes place, dynamic and static contact because of the common cooperation of electrodynamic repulsion force and spring with down, produce and touch jumping, electric arc takes place, operating mechanism begins separating action after needing to wait for 5 milliseconds, at this moment touches jumping and electric arc and just stops.Obviously, this with regard to the moving contact that exposes general circuit breaker have that breaking capacity is low, poor sensitivity and useful life short deficiency.
CN101320659A discloses " revolving double breakpoints structure of breaker of plastic casing " technology of Shanghai institute of electricity section, to solve the high breaking capacity problem of moving contact of breaker, should be a kind of useful trial of splitting path in addition, but structure complicacy, cost is higher.
Through retrieval and market survey, find to have the determine report and the material object of new departure of moving contact of breaker high breaking capacity of single-break formal solution to appear on the market.
For this reason; The applicant attempts to set about from reducing end pressure; And when producing the electrodynamic repulsion force that short circuit current causes, do not receive the restriction of the end pressure that head applies, dynamic and static contact is separated to the coverage that makes arc extinction immediately; When improving disjunction sensitivity, reduce the galvanic corrosion loss of electric arc to the contact.
Summary of the invention
The technical problem that the present invention will solve is to design a kind of electrodynamic repulsion force that is caused by short-circuit current to drive dynamic and static contact and separate, reduce the circuit breaker decompression repulsion dynamic separator of electric arc to the single-break of contact galvanic corrosion loss fast.
The technical scheme that solves the problems of the technologies described above is: the decompression repulsion dynamic breaking device of this circuit breaker comprises the rotation axis of moving contact, contact, moving contact etc., in the middle of moving contact and spring are positioned at; These both both sides have inner support, decompression lever and connecting rod A, support arm, locking board and connecting rod B, C and outermost baffle plate from inside to outside successively, and inner support wherein, connecting rod A, snap close, connecting rod B, C and baffle plate distribute in bilateral symmetry, and structure is identical; Decompression lever and support arm are molded parts, and moving contact and the inner support of being close to its both sides have the flute profile axis hole A of an A by closing-up on the inner support; Axle A is chained together the inner support of both sides and the end of connecting rod A and an end of spring, and a B is a minor axis, respectively one of both sides; Be connected in series the support arm of homonymy, the other end and the inner support of connecting rod A separately, axle C is serially connected the top of support arm, two decompression levers and the other end of spring, and the flute profile axis hole C of this C opens the middle and upper part at support arm; Axle D is the rotation axis of moving contact, is positioned at the support arm middle and lower part, and locking board, support arm, decompression lever and moving contact are serially connected; Have flute profile axis hole D and bonnet lock hole on the decompression lever, snap close is arranged on the locking board, axle E is the head rotation axis; Be positioned at the end that takes over of support arm, this E is that two ends is the axle that short cylindrical, middle part are square column type, on the moving contact right-of-center in political views section yoke is arranged; There are magnetic plate and support thereof in the yoke below; Connecting rod B and connecting rod C two outer ends are separately fixed on baffle plate and the support arm, and two the inners are connected in series with the pull bar of circuit breaker, and two baffle plates have the pressure edge near axle C top.
The postive stop baffle that inner support is arranged on the said baffle plate.
On the arc limit of said axle A near the support arm left side.
The disjunction that the invention has the beneficial effects as follows dynamic and static contact is highly sensitive, and breaking speed is fast, and the arcing time is short, the contact long service life.
Description of drawings
Fig. 1 is this device primary structure signal (closing up state faces) figure.
Fig. 2 is this device primary structure signal (released state is faced) figure.
Fig. 3 is this device primary structure signal (overlooking) figure.
Fig. 4 is for this installs dynamic and static contact and closes up view in the circuit breaker.
This installs dynamic and static contact separation view to Fig. 5 in the circuit breaker.
Fig. 6 originally installs view of living in when being breaker open operation.
Fig. 7 is the support arm structural representation.
Fig. 8 is the baffle arrangement sketch map.
Fig. 9 is the locking board structural representation.
Figure 10 is the decompression lever structural representation.
Embodiment
The present invention does further to detail below in conjunction with embodiment and with reference to accompanying drawing: with reference to Fig. 1, Fig. 2 and Fig. 3, the decompression repulsion dynamic breaking device of this circuit breaker comprises the rotation axis 17 of moving contact 1, contact 2, moving contact etc.; In the middle of moving contact 1 was positioned at spring 25, these both both sides had inner support 4, decompression lever 18 and connecting rod A6, support arm 13, locking board 16 and connecting rod B22, connecting rod C23 and outermost baffle plate 21 from inside to outside successively, and moving contact 1 and the inner support 4 of being close to its both sides are by rivet 3 riveteds; Have the flute profile axis hole A5 of an A7 on the inner support 4, axle A7 is chained together the end of inner support of both sides 4 and connecting rod A6 with an end of spring 25, and a B9 is a minor axis; Each one of both sides are connected in series the support arm 13 of homonymy, the other end and the inner support 4 of connecting rod A6 separately, and axle C12 is serially connected the top of support arm 13, decompression lever 18 and the other end of spring 25; The flute profile axis hole C11 of this C opens the middle and upper part at support arm 13; Axle D17 is the rotation axis of moving contact, is positioned at support arm 13 middle and lower parts, and locking board 16, support arm 13, decompression lever 18 and moving contact 1 are serially connected; Have flute profile axis hole D28 and bonnet lock hole 29 on the decompression lever; Snap close 27 is arranged on the locking board 16, and axle E14 is the head rotation axis, is positioned at the end that takes over of support arm 13; This E is that two ends is the axle that short cylindrical, middle part are square column type; On moving contact 1 right-of-center in political views's section yoke 15 is arranged, the yoke below has magnetic plate 19 and support thereof, connecting rod B22 and connecting rod C23 two outer ends to be separately fixed on baffle plate 19 and the support arm 13; Two the inners are connected in series with the pull bar 24 of circuit breaker, and two baffle plates 21 have near axle C12 top presses along 26.
The spacing pin 20 that inner support 4 is arranged on the said baffle plate 21.
On the arc limit 8 of said axle A7 near support arm 13 left sides.
The course of action of this device is: with reference to Fig. 4,5, when being short-circuited on the distribution line, just producing electrodynamic repulsion force moving contact 2 is separated with fixed contact; Yoke 15 holds magnetic plate 19 simultaneously, and snap close 27 release from the bonnet lock hole 29 of decompression lever 18 on the locking board 16 is thrown off, and decompression lever rises; Contract in the spring 25 and reduce pressure, be beneficial to and jump on the moving contact, moving contact 1 is in last jumping; Axle A7 upwards slides in flute profile axis hole A5, also make a C12 in its flute profile axis hole C11 to lower slider (with reference to Fig. 1, Fig. 7-10), do not have the press power that can't overcome thereby make moving contact 1 driven by electrodynamic repulsion force to go up to jump; Thoroughly and quick, the spacing of dynamic and static contact widens rapidly in last jumping, and the arcing time is short; The contact does not receive serious galvanic corrosion, long service life.When Fig. 4 representes that dynamic and static contact is harmonious; This device is residing state in circuit breaker; When Fig. 5 represented that electrodynamic repulsion force makes moving contact 2 jump out of fixed contact, the state that this device shows in circuit breaker, Fig. 6 were illustrated under the driving of electrodynamic repulsion force; The pull bar 24 pulling connecting rod B22 of operating mechanism, when C23 makes breaker open operation, the state that this device is shown in circuit breaker.When circuit breaker is in gate-dividing state shown in Figure 6; The pressure of this device baffle plate 21 presses down axle C12 again along 26, forces decompression lever 18 to move down, magnetic plate 19 take off inhale and reset, the snap close 27 on the locking board 16 inserts the bonnet lock hole 29 on the decompression lever once more; With decompression lever 18 lockings; Spring 25 normally imposes on moving contact 1 again, with precompression, and normal operation circuit.
What need explanation is that this device is adapted at using in the circuit breaker of two utmost points or three utmost points equally.
Claims (3)
1. the decompression repulsion dynamic breaking device of a circuit breaker comprises the rotation axis (17) of moving contact (1), contact (2), moving contact, it is characterized in that moving contact (1) and spring (25) are positioned in the middle of; These both both sides have inner support (4), decompression lever (18) and connecting rod A (6), support arm (13), locking board (16) and connecting rod B, C (22,23) and outermost baffle plate (21) from inside to outside successively, and inner support wherein, connecting rod A, snap close, connecting rod B, connecting rod C and baffle plate are symmetrically distributed in both sides, and structure is identical; Decompression lever and support arm are single molded part, and moving contact (1) and the inner support (4) of being close to its both sides have the flute profile axis hole A (5) of an A (7) by rivet (3) riveted on the inner support (4); Axle A (7) is chained together the inner support (4) of both sides and the end of connecting rod A (6) and an end of spring (25), and a B (9) is a minor axis, respectively one of both sides; Be connected in series the support arm (13) of homonymy, the other end and the inner support (4) of connecting rod A (6) separately; Axle C (12) is serially connected the top of support arm (13), decompression lever (18) and the other end of spring (25), and the flute profile axis hole C (11) of this C opens in the middle and upper part of support arm (13), and axle D (17) is the rotation axis of moving contact; Be positioned at support arm (13) middle and lower part; Locking board (16), support arm (13), decompression lever (18) and moving contact (1) are serially connected, have flute profile axis hole D (28) and bonnet lock hole (29) on the decompression lever, snap close (27) is arranged on the locking board (16); Axle E (14) is the head rotation axis; Be positioned at the end that takes over of support arm (13), this E is that two ends is the axle that short cylindrical, middle part are square column type, on moving contact (1) right-of-center in political views's section yoke (15) is arranged; There are magnetic plate (19) and support thereof in the yoke below; Connecting rod B (22) and connecting rod C (23) two outer ends are separately fixed on baffle plate (21) and the support arm (13), and two the inners are connected in series with the pull bar (24) of circuit breaker, and two baffle plates (21) have near axle C (12) top presses along (26).
2. the decompression repulsion dynamic breaking device of circuit breaker as claimed in claim 1 is characterized in that having on the said baffle plate (21) the spacing pin (20) of inner support (4).
3. the decompression repulsion dynamic breaking device of circuit breaker as claimed in claim 1 is characterized in that on the arc limit (8) of said axle A (7) near support arm (13) left side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101100282A CN101794685B (en) | 2010-02-11 | 2010-02-11 | Decompression repulsion dynamic breaking device of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101100282A CN101794685B (en) | 2010-02-11 | 2010-02-11 | Decompression repulsion dynamic breaking device of breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101794685A CN101794685A (en) | 2010-08-04 |
| CN101794685B true CN101794685B (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101100282A Expired - Fee Related CN101794685B (en) | 2010-02-11 | 2010-02-11 | Decompression repulsion dynamic breaking device of breaker |
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| Country | Link |
|---|---|
| CN (1) | CN101794685B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109686628B (en) * | 2019-01-22 | 2020-02-07 | 浙江明晖智能电气有限公司 | Plastic case circuit breaker |
| CN115440515A (en) * | 2021-06-04 | 2022-12-06 | 天津首瑞智能电气有限公司 | An electric switch with multiple suction superposition |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3808567A (en) * | 1973-01-30 | 1974-04-30 | A Maier | Circuit breaker with improved resettable latch and trip means |
| DE3802184A1 (en) * | 1988-01-26 | 1989-08-03 | Licentia Gmbh | LOW VOLTAGE SWITCH WITH LOCKING LOBS |
| CN1384516A (en) * | 2001-05-03 | 2002-12-11 | Lg产电株式会社 | Circuit breaker |
| CN201017779Y (en) * | 2007-03-28 | 2008-02-06 | 李乾伟 | Permanent magnetism driving low pressure air switch |
| CN201048116Y (en) * | 2007-06-16 | 2008-04-16 | 李乾伟 | Permanent-magnet relay |
-
2010
- 2010-02-11 CN CN2010101100282A patent/CN101794685B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3808567A (en) * | 1973-01-30 | 1974-04-30 | A Maier | Circuit breaker with improved resettable latch and trip means |
| DE3802184A1 (en) * | 1988-01-26 | 1989-08-03 | Licentia Gmbh | LOW VOLTAGE SWITCH WITH LOCKING LOBS |
| CN1384516A (en) * | 2001-05-03 | 2002-12-11 | Lg产电株式会社 | Circuit breaker |
| CN201017779Y (en) * | 2007-03-28 | 2008-02-06 | 李乾伟 | Permanent magnetism driving low pressure air switch |
| CN201048116Y (en) * | 2007-06-16 | 2008-04-16 | 李乾伟 | Permanent-magnet relay |
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| Publication number | Publication date |
|---|---|
| CN101794685A (en) | 2010-08-04 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HANGZHOU QIANLONG WEIYE ELECTRICAL EQUIPMENT WHOLE Free format text: FORMER OWNER: LI QIANWEI Effective date: 20130514 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130514 Address after: 311300 Zhejiang city of Ling'an Province Jincheng Street Gua Fan Road No. 266 Patentee after: Hangzhou Qianlong Weiye Electron Co., Ltd. Address before: 311300 Zhejiang city of Ling'an Province Jincheng Street West villa 3 Lane Street No. 12 Patentee before: Li Qianwei |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20200211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |