CN100514527C - Arc suppressing device of intelligent plastic casing break - Google Patents

Arc suppressing device of intelligent plastic casing break Download PDF

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Publication number
CN100514527C
CN100514527C CNB200610156130XA CN200610156130A CN100514527C CN 100514527 C CN100514527 C CN 100514527C CN B200610156130X A CNB200610156130X A CN B200610156130XA CN 200610156130 A CN200610156130 A CN 200610156130A CN 100514527 C CN100514527 C CN 100514527C
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CN
China
Prior art keywords
arc
control device
plastic casing
intelligent plastic
magnetic conductor
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.)
Expired - Fee Related
Application number
CNB200610156130XA
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Chinese (zh)
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CN101004988A (en
Inventor
刘鑫章
周晏明
Original Assignee
张作朋
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Priority to CNB200610156130XA priority Critical patent/CN100514527C/en
Publication of CN101004988A publication Critical patent/CN101004988A/en
Application granted granted Critical
Publication of CN100514527C publication Critical patent/CN100514527C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The arc extinguishing equipment possesses at least a monopole-contacting element. One rotary type bridge shaped moving contact, two static contact heads, and two arc-extinguish chambers on the two sides of the moving contact are setup inside the monopole-contacting element. One end, where there is static contact point of the static contact head is bent to U shape with U type slot. Being rotated to a certain angle, the moving contact can be contacted to the static contact heads. Each arc-extinguish chamber possesses two-paralleled flash barriers, and arc chute setup between the flash barriers. Being installed in U type slots of the static contact heads, magnetizer can blow electric arc into arc-extinguish chambers quickly. Advantages are: shortening flashover distance, raised arc-extinguishing effect effectively, and raising breaking capability of breaker.

Description

The arc-control device of intelligent plastic casing break
Technical field
The present invention relates to a kind of arc-control device of circuit breaker.
Background technology
In the current low-voltage distribution market, being in great demand of low-voltage circuit breaker is again very important to the requirement of its breaking capacity height, improve the breaking capacity of circuit breaker, must improve the arc quenching effect of arc quenching system.Circuit breaker is if the bigger load of band is when carrying out disjunction, in the contact gap, will produce electric arc, so-called electric arc, be exactly between contact gas under the highfield effect, by a large amount of electronics and the ion of the back generation of dissociate, these charged particles, do directed movement and produce high temperature and high light, make contact burning, and prolonged the break time of circuit, so the rapid arc extinguishing of must taking measures.
Its arc-suppressing method of common in the market breaker of plastic casing,
The arc-control device of intelligent plastic casing break of the prior art has three one pole osculating elements, two arc control device that are provided with rotary type bridge shape moving contact, two fixed contacts and are positioned at rotary type bridge shape moving contact both sides in each one pole osculating element; The end that described fixed contact is provided with fixed contact bends to the U-shaped with U-lag, and so that fixed contact to be set more easily, described moving contact can electrically contact with fixed contact after rotating certain angle; Described each arc control device have two flash barriers that be arranged in parallel and a plurality ofly are set in parallel in two arc extinguishing grid pieces between the flash barrier.The arc-control device of this kind structure mainly is the disjunction cooling effect arc extinguishing that adopts arc extinguishing grid pieces, but moves until the path control that enters arc control device at last unsatisfactoryly for electric arc, has caused flashover distance longer, and arc quenching effect is relatively poor.
Summary of the invention
Thereby the purpose of this invention is to provide a kind of preferably electric arc being blown fast shortens flashover distance to the arc control device, effectively improves the arc-control device of the intelligent plastic casing break of arc quenching effect.
The technical scheme that realizes the object of the invention is: a kind of arc-control device of intelligent plastic casing break, has at least one one pole osculating element, two arc control device that in each one pole osculating element, are provided with a rotary type bridge shape moving contact, two fixed contacts and are positioned at rotary type bridge shape moving contact both sides; The end that described fixed contact is provided with fixed contact bends to the U-shaped with U-lag, and its design feature is: be provided with the magnetic conductor that electric arc can be blown fast to the described arc control device in the U-lag of described fixed contact.
Described is to be riveted by the soft magnetic material of a plurality of sheets to form by magnetic conductor.
Described is to be formed with the riveted joint of pure iron sheet by a plurality of silicon steel sheets or electrician by magnetic conductor.
Described silicon steel sheet or electrician are preferably six to nine with the number of pure iron sheet.
The basic configuration of described magnetic conductor is " protruding " font, rectangle or trapezoidal.
Described magnetic conductor splicing is fixed in the U-lag; Perhaps described magnetic conductor is connected with described fixed contact riveted and fixed, thereby magnetic conductor is fixed in the U-lag.
This arc-control device can have one or two one pole osculating elements, is used for single phase poaer supply.
This arc-control device also can have three one pole osculating elements, is used for three phase mains.
The present invention has positive effect: (1) the present invention is by being provided with magnetic conductor in the U-lag of described fixed contact, when principal current produces magnetic flux and passes through magnetic conductor by fixed contact, in the contact gap, form magnetic field, when the circuit breaker disjunction, produce electric arc in the contact gap, electric arc self also produces a magnetic field, this magnetic field is at the electric arc upside, and it is opposite with the magnetic direction that fixed contact and magnetic conductor produce, and at the electric arc downside, it is identical with the magnetic direction that fixed contact and magnetic conductor produce, like this, the resultant flux of both sides is just unequal, and downside is greater than upside, therefore, produce strong electromagnetic force, electric arc is upwards promoted, and electric arc is entered in the arc control device of arc extinguishing grid pieces composition rapidly, move until the path that enters arc control device at last to control electric arc preferably, preferably electric arc is blown fast to arc control device; Electric arc is elongated and is subjected to the disjunction of arc extinguishing grid pieces and cools off and very fast being extinguished; Thereby shorten flashover distance to the arc control device, effectively improve the advantage of arc quenching effect so the present invention has preferably electric arc to be blown fast.(2) the present invention utilizes the arc extinguishing of arc current own, thereby arc current is big more, and arc blow-out is also just strong more, and arc quenching effect is good more, thereby is very effective for the breaking capacity that improves circuit breaker.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the stereogram of magnetic conductor in the arc-control device of intelligent plastic casing break shown in Figure 1.
Be labeled as shown in the accompanying drawing: rotary type bridge shape moving contact 1, contact head 11, moving contact 12, fixed contact 2, fixed contact 21, U-lag 22, head end 23, tail end 24, arc control device 3, flash barrier 4, arc extinguishing grid pieces 5, magnetic conductor 6, housing 7.
Embodiment
(embodiment 1)
Figure 1 shows that the structural representation of present embodiment, present embodiment is used for the arc-control device of the intelligent plastic casing break of the synchronous break-make of three phase mains for having three one pole osculating elements.Two arc control device 3 that in each one pole osculating element, are equipped with a rotary type bridge shape moving contact 1, two fixed contacts 2 and are positioned at rotary type bridge shape moving contact 1 both sides; The head end 23 that described fixed contact 2 is provided with fixed contact 21 bends to the U-shaped with U-lag 22, is provided with the magnetic conductor 6 that electric arc can be blown fast to the described arc control device 3 in the U-lag 22 of described fixed contact 2; Described magnetic conductor 6 is fixed in the described U-lag 22; Described three moving contacts 1 are coaxial setting, can electrically contact with fixed contact 2 after the rotating certain angle synchronously; Each rotary type bridge shape moving contact 1 has two contact heads 11, respectively is provided with a moving contact 12 on each contact head; Described each arc control device 3 have two flash barriers that be arranged in parallel 4 and a plurality ofly are set in parallel in two arc extinguishing grid pieces 5 between the flash barrier 4.Certainly, the arc-control device in the arc control device 3 also can be other forms, and above structure only is a kind of example, cannot be used to limit protection scope of the present invention.
6 needs of described magnetic conductor are fixed in the U-lag 22 and get final product, can adopt the glue bonding fixing, also can be on housing 7 that the groove chucking is set is fixing in the corresponding position, present embodiment then adopts magnetic conductor 6 and fixed contact head end 23 is riveted together, thereby magnetic conductor 6 is fixed in the U-lag 22.
The fixed contact 2 that is positioned at the left side in the arc-control device shown in Figure 1, the tail end 24 relative with the head end 23 that bends to U-shaped stretches out outside the housing 7, and its tail end 24 is provided with open-work, so that be electrically connected with external circuits; Be positioned at the fixed contact 2 on right side, its tail end 24 is positioned at housing 7, but its tail end 24 also is provided with open-work, and also is provided with open-work with this open-work position opposite position on the housing, is electrically connected with external circuits with convenient.
Figure 2 shows that the perspective view of the used magnetic conductor 6 of present embodiment.Magnetic conductor 6 in the present embodiment is to be formed with the riveted joint of pure iron sheet by the electrician of nine sheets, and each sheet electrician be " protruding " font with the basic configuration of pure iron sheet, and the basic configuration of the magnetic conductor 6 that forms of riveting also is " protruding " font.In other embodiments, also can adopt six, seven electricians to rivet into needed magnetic conductor 6 with the pure iron sheet, these replacements also are feasible; Can also adopt the electrician of other shape to use the pure iron sheet in addition; for example rectangle or trapezoidal electrician use the pure iron sheet; also can make rectangle or trapezoidal magnetic conductor 6, can realize electric arc is blowed in the arc control device 3 quickly, so also belong to protection scope of the present invention.
In other embodiments, also can adopt and choose other suitable soft magnetic material---for example the electrician that replaces in the present embodiment of silicon steel sheet makes magnetic conductor 6 with the pure iron sheet, and these replacements also are feasible, also belong to protection scope of the present invention.
Present embodiment is by being provided with magnetic conductor 6 in the U-lag 22 of described fixed contact 2, when principal current produces magnetic flux and passes through magnetic conductor 6 by fixed contact 2, in the contact gap, form magnetic field, when the circuit breaker disjunction, produce electric arc in the contact gap, electric arc self also produces a magnetic field, this magnetic field is at the electric arc upside, and it is opposite with the magnetic direction that fixed contact 2 and magnetic conductor 6 produce, and at the electric arc downside, it is identical with the magnetic direction that fixed contact 2 and magnetic conductor 6 produce, like this, the resultant flux of both sides is just unequal, and downside is greater than upside, therefore, produce strong electromagnetic force, electric arc is upwards promoted, and electric arc is entered in the arc control device 3 of arc extinguishing grid pieces composition rapidly, move until the path that enters arc control device 3 at last to control electric arc preferably, preferably electric arc is blown fast to arc control device 3; Electric arc is elongated and is subjected to the disjunction of arc extinguishing grid pieces 5 and cools off and very fast being extinguished; Thereby shorten flashover distance to the arc control device 3, effectively improve the advantage of arc quenching effect so the present invention has preferably electric arc to be blown fast.
(embodiment 2)
Present embodiment is substantially the same manner as Example 1, and difference is: present embodiment has only an one pole osculating element, is used for the break-make of single phase poaer supply live wire.
(embodiment 3)
Present embodiment is substantially the same manner as Example 1, and difference is: present embodiment has only two one pole osculating elements, is used for the synchronous break-make of the live wire and the zero line of single phase poaer supply.
Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be qualification to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all execution modes.And these belong to conspicuous variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.

Claims (9)

1, a kind of arc-control device of intelligent plastic casing break, has at least one one pole osculating element, two arc control device (3) that in each one pole osculating element, are provided with a rotary type bridge shape moving contact (1), two fixed contacts (2) and are positioned at rotary type bridge shape moving contact (1) both sides;
The end that described fixed contact (2) is provided with fixed contact (21) bends to the have U-lag U-shaped of (22), is provided with the magnetic conductor (6) that electric arc can be blown fast to the described arc control device (3) in the U-lag (22) of described fixed contact (2), it is characterized in that:
It is outer and describedly stretch out described housing that the tail end (24) of a described fixed contact (2) stretches out housing (7)
(7) Wai tail end (24) is provided with open-work; The tail end (24) of another described fixed contact (2) is positioned at described housing (7) and the described tail end (24) that is positioned at housing is provided with open-work, and described housing (7) also is provided with open-work in the relevant position of the through-hole position of the described tail end (24) that is positioned at housing.
2, the arc-control device of intelligent plastic casing break according to claim 1 is characterized in that: described is to be riveted by the soft magnetic material of a plurality of sheets to form by magnetic conductor (6).
3, the arc-control device of intelligent plastic casing break according to claim 2 is characterized in that: described is to be formed with the riveted joint of pure iron sheet by a plurality of silicon steel sheets or electrician by magnetic conductor (6).
4, the arc-control device of intelligent plastic casing break according to claim 3 is characterized in that: described silicon steel sheet or electrician are six to nine with the number of pure iron sheet.
5, the arc-control device of intelligent plastic casing break according to claim 1 is characterized in that: this arc-control device has one or two one pole osculating elements, is used for single phase poaer supply.
6, the arc-control device of intelligent plastic casing break according to claim 1 is characterized in that: this arc-control device has three one pole osculating elements, is used for three phase mains.
7, the arc-control device of intelligent plastic casing break according to claim 1 is characterized in that: the basic configuration of described magnetic conductor (6) is " protruding " font, rectangle or trapezoidal.
8, the arc-control device of intelligent plastic casing break according to claim 1 is characterized in that: described magnetic conductor (6) gluing is fixed in the U-lag (22).
9, the arc-control device of intelligent plastic casing break according to claim 1 is characterized in that: described magnetic conductor (6) is connected with described fixed contact (2) riveted and fixed.
CNB200610156130XA 2006-12-29 2006-12-29 Arc suppressing device of intelligent plastic casing break Expired - Fee Related CN100514527C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB200610156130XA CN100514527C (en) 2006-12-29 2006-12-29 Arc suppressing device of intelligent plastic casing break

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB200610156130XA CN100514527C (en) 2006-12-29 2006-12-29 Arc suppressing device of intelligent plastic casing break

Publications (2)

Publication Number Publication Date
CN101004988A CN101004988A (en) 2007-07-25
CN100514527C true CN100514527C (en) 2009-07-15

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Family Applications (1)

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CNB200610156130XA Expired - Fee Related CN100514527C (en) 2006-12-29 2006-12-29 Arc suppressing device of intelligent plastic casing break

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102184815A (en) * 2011-05-16 2011-09-14 法泰电器(江苏)股份有限公司 Circuit breaker arc striking device
CN103730275A (en) * 2013-12-20 2014-04-16 吴江市东泰电力特种开关有限公司 Rotating contact arc extinguishing chamber
CN103956305B (en) * 2014-04-11 2017-02-08 江苏大正电气有限公司 Moving contact connecting board for intelligent control and protection device
CN105702519B (en) * 2016-04-08 2019-01-18 首瑞(天津)电气设备有限公司 Contact module and rotary isolation switch for rotary isolation switch

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Publication number Publication date
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Granted publication date: 20090715

Termination date: 20121229