CN101978452B - Permanent magnet quenching device for load interrupters - Google Patents
Permanent magnet quenching device for load interrupters Download PDFInfo
- Publication number
- CN101978452B CN101978452B CN200980109877.1A CN200980109877A CN101978452B CN 101978452 B CN101978452 B CN 101978452B CN 200980109877 A CN200980109877 A CN 200980109877A CN 101978452 B CN101978452 B CN 101978452B
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- arc
- electric arc
- iron yoke
- extinction device
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H33/187—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet comprising a hollow annular arc runner and a central contact between which a radially drawn arc rotates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
- H01H33/121—Load break switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H33/182—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
In a permanent magnet quenching device (6) for quenching arcs in the contact system of load interrupters, a permanent magnet (7) which is provided with magnetic yoke means (11, 12) is supported on a ring element (9) which is galvanically connected to a fixed contact (1) of the load interrupter via retaining clips (8) and forms an arc movement path (10) for the arc foot of an arc produced when disconnecting the contact system. Apart from the arc movement path (10), all free outer surfaces of the permanent magnet quenching device (6) are covered, without gaps, with an integral insulating material sheath (14) which fixes the individual components in their predefined position in a form-fitting manner and insulates the arc movement path from the other metal components of the quenching device.
Description
The present invention relates to a kind of permanent magnet arc-extinction device for the electric arc of cancellation in the contact system of gas-insulated switchgear load disconnecting switch; it comprises that a permanent magnet that is provided with iron yoke device, one are bearing in ring-type element on this permanent magnet outward flange and the protective cover of an insulation; wherein; this ring-type element is with an electric arc guide rail towards the electric arc that produces when disconnecting contact system, and this electric arc guide rail can be connected with the fixed contact conduction of contact system by geometrical clamp.
A kind of load isolation rotary switch of describing in EP 0,296 915 B1 has respectively a permanent magnet arc-extinction device on fixed contact, the electric arc bottom (Lichtbogenfu β punkt) of the electric arc that this device will produce when disconnecting contact system moves to the in the shade position on the static contact head device, and electric arc rekindles after current zero-crossing point to avoid.
A kind of by the disclosed load disconnecting switch of WO 2007/068693A1 in, from the outside at fixed contact a permanent magnet arc-extinction device is set respectively by fastening backing plate.This permanent magnet arc-extinction device comprises the permanent magnet of an annular, this permanent magnet is bearing on the end face that points to moving contact on the ring-type element, this ring-type element conducts electricity, and also therefore links to each other by electric current with fixed contact with fastening backing plate by a geometrical clamp.On the end face that exposes and side, permanent magnet is covered by an iron yoke cover and the iron yoke plate that ring-type element is exposed, and this iron yoke cover and iron yoke plate also are used for adding high-intensity magnetic field simultaneously.As the insulating protective cover that is used for the permanent magnet arc-extinction device, be provided with screen circle and a cover that does not hide described ring-type element, it is made of plastics respectively.The mutual location of each member and fixing undertaken by screen circle and cover, screen circle and cap can pass through special lock device and geometrical clamp and fastening pad integrated circuit board and lock.The electric arc that produces when disconnecting contact system (its bottom is along the rotation of electric arc guide rail) extends to the permanent magnet arc-extinguishing system, so that electric arc extinguishes when ensuing current zero-crossing point.
Therefore known permanent magnet arc-extinction device is defective, because hardware only by the circle and cover is insulated by halves and mutual location inaccurately of screening of plastics, can not be guaranteed controllably to rotate bottom the electric arc and electric arc is extinguished rapidly.In addition, the cost of assembling is also very high.
Technical problem to be solved by this invention is, a kind of permanent magnet arc-extinction device that starts described type is provided, and it can and guarantee to make electric arc to extinguish rapidly and reliably with lower cost manufacturing.
This technical problem solves by a kind of permanent magnet arc-extinction device with feature as claimed in claim 1 by the present invention.According to suitable expansion of the present invention design as described in other dependent claims.
Core concept of the present invention is that the outer surface that exposes of each hardware covers lid by the insulating material of a Construction integration, but the electric arc guide rail keeps exposing.Therefore, except this electric arc guide rail, all hardwares of arc-extinction device are kept apart with an electric arc that produces when cut-off switch contacts, so this electric arc is extinguished rapidly and reliably.The electric arc bottom can not be displaced on other hardware from the electric arc guide rail of accurately being stipulated out by the insulating material cover.By the insulating material cover, each member of permanent magnet arc-extinction device is by form fit ground and therefore mutually accurately and reliably be arranged in its position given in advance.In addition, the insulating material cover that seamlessly applies provides reliable anti-corrosion protection.Applying preferably of insulating material cover carried out in injection mould, and in this injection mould, each member of arc-extinction device is positioned before applying insulating material in the position identical in each injection moulding process mutually.
In design of the present invention, described insulating material cover is made of a kind of thermoplastic plastics.
Further set forth with reference to the accompanying drawings one embodiment of the present of invention.In the accompanying drawings:
Fig. 1 is a kind of end view of contact device of load disconnecting switch, this device by one with partly consisting of with the fixed contact of the permanent magnet arc-extinction device shown in the cutaway view, a moving contact and a grounding contact;
Fig. 2 is the upward view of permanent magnet arc-extinction device; And
Fig. 3 is the cutaway view that dissects along the straight line III-III among Fig. 2.
Fig. 1 shows a kind of fixed contact 1, moving contact 2 and grounding contact 3 of the load disconnecting switch for gas-insulated switchgear, and wherein, fixed contact 1 and moving contact 2 are connected on the plastic seating 15.The turnover moving contact 2 that is designed to the double-pole contact in this form of implementation is fixed on the switch spindle 4, and therefore can be connected with fixed contact 1 or with grounding contact 3 in simple mode by the master cock main shaft.Permanent magnet arc-extinction device 6 is installed on this fixed contact 1 with immobilising device 5 that fixed contact 1 is connected conductively by one.Position shown in Fig. 1 is corresponding to the separation point position after a switching process that is triggered by switch spindle 4, and moving contact 2 separates with fixed contact 1 in this switching process.Permanent magnet arc-extinction device 6 cancellations of electric arc G by linking to each other with fixed contact 1 that produce between fixed contact 1 and moving contact 2 in this separation process, this is by transferring on the permanent magnet arc-extinction device 6 of arranging with respect to the motion track of moving contact 2 electric arc G with keeping at a certain distance away and so having prevented that electric arc rekindles behind the current zero-crossing point and realize.After arc transfer is to permanent magnet arc-extinction device 6, the magnetic field of electric arc G by the permanent magnet 7 in the permanent magnet arc-extinction device is converted to along the rotatablely moving an of ring-type element 9, this ring-type element 9 by geometrical clamp 8 with immobilising device 5 and therefore link to each other conductively with fixed contact 1.By the rotation of electric arc G on the circular electric arc guide rail 10 of ring-type element 9, basically prevented the localized burn on the permanent magnet arc-extinction device 6.Can be clear that electric arc guide rail 10 in the upward view by the permanent magnet arc-extinction device 6 shown in Fig. 2.
As shown in Figure 3, the permanent magnet 7 of annular directly contacts with an iron yoke case 11 in its upper surface and side thereof towards fixed contact 1, its towards the lower surface of moving contact 2, keep the zone of a determining deviation then directly to contact with the iron yoke plate 12 of an annular with permanent magnet 7 outward flanges, wherein, an opening that conforms to the internal diameter of permanent magnet is arranged in the bottom of iron yoke case 11.The annular surface that the outer edge of permanent magnet 7 in its lower surface keeps exposing then is bearing on the ring-type element 9.Between ring-type element 9 and iron yoke plate 12, can leave a narrow annulus 13 (Fig. 3).
The electric arc guide rail 10 that exposes except the maintenance of ring-type element 9 and the immobilising device 5 that formed by two fastening backing plates that are fixed on the fixed contact 1, all aforementioned components are embedded in the insulating material cover 14 of an one (linking up) in the Components Composition state of permanent magnet arc-extinction device 6, each member is by the clamping of form fit ground and interfix in this insulating material cover, and their outer surface is hidden by plastics.A kind of thermoplastic of preferred use is as insulating material.Thermoplastic also can be processed to complicated geometry and with low cost easily.This except electric arc guide rail 10, from the outside the significant advantage that permanent magnet arc-extinction device 6 all coats are that with insulating material the bottom of the electric arc G that all hardwares of arc-extinguishing system rotate with respect to electric arc guide rail 10 and at this electric arc guide rail keeps separating.By the controlled rotation on electric arc guide rail 10 of only limiting to of electric arc, guaranteed to make this electric arc to extinguish rapidly and reliably.
The manufacturing of permanent magnet arc-extinction device 6 is passed through exactly, and can accurately repeatedly correctly be fixed on each hardware mutual alignment in the injection mould and next usefulness insulating material injection encapsulated realization.Thus, each member is in the use state of permanent magnet arc-extinction device in the position given in advance, that can mutually not obscure.Assembling cost and because the cost cost that the number of components reduces can be with respect to being that the traditional required cost of permanent magnet arc-extinguishing system of production is lowered.Because the injection encapsulated of permanent magnet arc-extinction device is seamless except only the electric arc guide rail surface being exposed, and the corrosion phenomenon that is caused by external action substantially can not occur.
Claims (5)
1. the permanent magnet arc-extinction device (6) of the electric arc of a contact system that is used for the load disconnecting switch of cancellation in gas-insulated switchgear; it comprises that is provided with an iron yoke device (11; 12) permanent magnet (7); one is bearing in ring-type element (9) on this permanent magnet (7) outward flange and the protective cover of an insulation; wherein; this ring-type element (9) with one towards by fixed contact and moving contact (1; the electric arc guide rail (10) of the electric arc (G) that produces when the contact system that 2) forms disconnects; this electric arc guide rail can pass through geometrical clamp (8) and be connected with fixed contact (1) conduction of contact system; it is characterized in that; described protective cover is designed to the insulating material cover (14) of one; except described electric arc guide rail (10) exposes; this insulating material cover (14) seamlessly covers the whole outer surface of described permanent magnet arc-extinction device (6), and with each Components Shape of this arc-extinction device (6) ordinatedly; accurately and enduringly be fixed in its position given in advance.
2. by permanent magnet arc-extinction device claimed in claim 1, it is characterized in that, described iron yoke device comprises that one is used for shape and holds exactly the iron yoke case (11) of described permanent magnet (7) and one for the iron yoke plate (12) that hides described permanent magnet (7), and this iron yoke plate (12) be stretched over fully or closely in the fringe region of described permanent magnet (7) around ring-type element (9).
3. by claim 1 or 2 described permanent magnet arc-extinction devices, it is characterized in that, described permanent magnet (7) is designed to toroidal magnet, and described iron yoke plate (12) has the opening that conforms to this toroidal magnet internal diameter with iron yoke case (11), wherein, form like this until the cylindrical inner surface of geometrical clamp (8) cut-off cover by insulating material cover (14).
4. by permanent magnet arc-extinction device claimed in claim 1, it is characterized in that described insulating material cover (14) is made of a kind of thermoplastic material.
5. by permanent magnet arc-extinction device claimed in claim 1, it is characterized in that, described insulating material cover (14) is a kind of injection moulding cover of making in injection mould, and wherein, each member position of described permanent magnet arc-extinction device (6) is positioned in this injection mould exactly mutually.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008015463.6 | 2008-03-18 | ||
| DE200810015463 DE102008015463B3 (en) | 2008-03-18 | 2008-03-18 | Permanent magnet extinguishing device for switch-disconnector |
| DE1020080154636 | 2008-03-18 | ||
| PCT/EP2009/052835 WO2009115439A1 (en) | 2008-03-18 | 2009-03-11 | Permanent magnet quenching device for load interrupters |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101978452A CN101978452A (en) | 2011-02-16 |
| CN101978452B true CN101978452B (en) | 2013-10-23 |
Family
ID=40599987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980109877.1A Active CN101978452B (en) | 2008-03-18 | 2009-03-11 | Permanent magnet quenching device for load interrupters |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2255371B1 (en) |
| CN (1) | CN101978452B (en) |
| DE (1) | DE102008015463B3 (en) |
| ES (1) | ES2549180T3 (en) |
| HK (1) | HK1149845A1 (en) |
| WO (1) | WO2009115439A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522252A (en) * | 2011-12-19 | 2012-06-27 | 中国西电电气股份有限公司 | Fracture structure of non-SF6 gas-insulated metal-enclosed isolating switch |
| GB201810176D0 (en) * | 2018-06-21 | 2018-08-08 | Secheron Hasler Uk Ltd | A switch for closing a circuit |
| GB201810180D0 (en) * | 2018-06-21 | 2018-08-08 | Secheron Hasler Uk Ltd | A switch for closing a circuit |
| FR3094836B1 (en) * | 2019-04-02 | 2021-07-09 | Pommier | Arc breaking device |
| CN110911192A (en) * | 2019-12-18 | 2020-03-24 | 柏仕海 | Electric power grading arc extinguishing device based on Bernoulli principle |
| CN111048370B (en) * | 2019-12-28 | 2021-09-24 | 常熟市通润开关厂有限公司 | High-segmentation arc extinguish chamber for circuit breaker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2119573A (en) * | 1982-04-17 | 1983-11-16 | Northern Eng Ind | Electric arc interrupter |
| CN1071782A (en) * | 1991-10-17 | 1993-05-05 | 梅兰日兰公司 | The hybrid circuit breaker that has axial blowout coil |
| WO2007068693A1 (en) * | 2005-12-13 | 2007-06-21 | Siemens Aktiengesellschaft | Load interrupter for an encapsulated switchgear and permanent magnet system for a load interrupter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0125553B1 (en) * | 1983-05-09 | 1988-09-14 | Mitsubishi Denki Kabushiki Kaisha | Circuit breaker of spiral arc type |
| DE3750482T2 (en) * | 1986-06-06 | 1995-05-04 | Mitsubishi Electric Corp | Switching device. |
| FR2618251B1 (en) * | 1987-06-25 | 1989-11-17 | Merlin Gerin | ROTARY SWITCH WITH MIGRATION CURVE TRACK OF AN ARC ROOT. |
| DE4243249A1 (en) * | 1992-12-19 | 1994-06-23 | Abb Patent Gmbh | Electric switch device |
-
2008
- 2008-03-18 DE DE200810015463 patent/DE102008015463B3/en not_active Expired - Fee Related
-
2009
- 2009-03-11 EP EP09721626.1A patent/EP2255371B1/en active Active
- 2009-03-11 ES ES09721626.1T patent/ES2549180T3/en active Active
- 2009-03-11 CN CN200980109877.1A patent/CN101978452B/en active Active
- 2009-03-11 WO PCT/EP2009/052835 patent/WO2009115439A1/en active Application Filing
-
2011
- 2011-04-21 HK HK11104059.7A patent/HK1149845A1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2119573A (en) * | 1982-04-17 | 1983-11-16 | Northern Eng Ind | Electric arc interrupter |
| CN1071782A (en) * | 1991-10-17 | 1993-05-05 | 梅兰日兰公司 | The hybrid circuit breaker that has axial blowout coil |
| WO2007068693A1 (en) * | 2005-12-13 | 2007-06-21 | Siemens Aktiengesellschaft | Load interrupter for an encapsulated switchgear and permanent magnet system for a load interrupter |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2255371B1 (en) | 2015-09-16 |
| DE102008015463B3 (en) | 2009-09-17 |
| CN101978452A (en) | 2011-02-16 |
| ES2549180T3 (en) | 2015-10-23 |
| WO2009115439A1 (en) | 2009-09-24 |
| HK1149845A1 (en) | 2011-10-14 |
| EP2255371A1 (en) | 2010-12-01 |
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