CN104538246A - Vacuum arc-extinguishing chamber and vacuum breaker with vacuum arc-extinguishing chamber - Google Patents
Vacuum arc-extinguishing chamber and vacuum breaker with vacuum arc-extinguishing chamber Download PDFInfo
- Publication number
- CN104538246A CN104538246A CN201410761060.5A CN201410761060A CN104538246A CN 104538246 A CN104538246 A CN 104538246A CN 201410761060 A CN201410761060 A CN 201410761060A CN 104538246 A CN104538246 A CN 104538246A
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- CN
- China
- Prior art keywords
- cover plate
- bellows
- moving contact
- vacuum interrupter
- contact rod
- 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
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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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention relates to the field of high-voltage switches, in particular to a vacuum arc-extinguishing chamber and a vacuum breaker with the vacuum arc-extinguishing chamber. The vacuum arc-extinguishing chamber comprises a ceramic shell, a main shielding cover and a fixed cover plate, the ceramic shell is a metallized ceramic shell, an outwards-overturned flange is arranged at the end, close to the fixed cover plate, of the main shielding cover, the end of the flange and the ceramic shell are fixedly welded into a whole, and the overturned portion, corresponding to the other portion of the main shielding cover, of the flange and the fixed cover plate are fixedly welded into a whole. As the main shielding cover is welded to the ceramic shell and the fixed cover plate at the same time, a fixed end shielding cover in an existing vacuum arc-extinguishing chamber can be accordingly eliminated, the size of the vacuum arc-extinguishing chamber in the corresponding direction can be further greatly reduced, the size of the vacuum arc-extinguishing chamber can be reduced, the problems that the existing vacuum arc-extinguishing chamber is large in size and large in installation size are solved, and meanwhile the production cost of the vacuum arc-extinguishing chamber can be reduced by eliminating the fixed end shielding cover.
Description
Technical field
The present invention relates to high-voltage switch gear field, particularly related to a kind of vacuum interrupter and used the vacuum circuit-breaker of this vacuum interrupter.
Background technology
Existing large-current vacuum arc extinguishing chamber extensively adopts cup-shaped to indulge magnetic structure of contact terminal, and it mainly comprises the compositions such as moving conductive rod, static conductive rod, contact blade, bellows, bellows shield cover, main shield cover, end shield, quiet cover plate, dynamic cover plate, porcelain shell, moving contact, fixed contact, fairlead and support.The material of contact blade is chromiumcopper, and the material of contact and conducting rod is oxygen-free copper, and the material of supporting disk is the stainless steel that conductance is very low, radome oxygen-free copper or stainless steel.Contact blade and contact are welded together by solder.Conducting rod, contact and contact blade are connected in order in circuit, and after circuit ON, electric current flows through conducting rod, contact and contact blade.When electric current flows through the finger ring of two contacts, produce vertical magnetic field in two contact gap.Wherein notification number is just related to said structure in the Chinese patent of CN2482208Y.
Firmly radome and the quiet end shield that adopt the vacuum interrupter of said structure arrange respectively, therefore reducing of the volume of vacuum interrupter is unfavorable for, in addition, in order to ensure that bellows has enough effective lengths, the length that requirement porcelain shell, bellows shield cover etc. also must reach setting is just passable, this also limits reducing of the volume of vacuum interrupter from another point of view, in addition, be by Flange joint between fairlead and the dynamic cover plate of vacuum interrupter, the flange arrangement for connecting also increases the volume of vacuum interrupter to a certain extent.In view of the foregoing, there is following shortcoming in existing vacuum interrupter: arc control device volume ratio is comparatively large, and installation dimension and whole height are comparatively large, arc control device cost compare is high.
Summary of the invention
The object of the present invention is to provide a kind of vacuum interrupter, to solve the problem that volume is large, installation dimension is large that existing vacuum interrupter exists.
Meanwhile, the present invention also aims to provide the vacuum circuit-breaker using above-mentioned vacuum interrupter.
In order to solve the problem, vacuum interrupter of the present invention is by the following technical solutions: vacuum interrupter, comprise porcelain shell, main shield cover and quiet cover plate, described porcelain shell is metallization porcelain shell, one end of the close quiet cover plate of main shield cover is provided with the flange of outwards turnover, together with the end of described flange is welded and fixed with porcelain shell, the bending place of the other parts relative to main shield cover of flange is welded with quiet cover plate and is fixed together.
The moving contact rod also comprising bellows and fixedly weld with bellows, one end of the close moving contact rod of bellows bends and is formed to the close welding edge of moving contact rod, and bellows is welded together by described welding edge and moving contact rod.
The slope transitions that described welding edge comprises the weld part parallel with the end face of moving contact rod and is connected between weld part and bellows other parts.
The dynamic cover plate also comprising fairlead and be fixed together with fairlead, described fairlead is metal fairlead and welds with dynamic cover plate to be fixed together.
Vacuum circuit-breaker is by the following technical solutions: vacuum circuit-breaker, comprise vacuum interrupter, vacuum interrupter comprises porcelain shell, main shield cover and quiet cover plate, described porcelain shell is metallization porcelain shell, one end of the close quiet cover plate of main shield cover is provided with the flange of outwards turnover, together with the end of described flange is welded and fixed with porcelain shell, the bending place of the other parts relative to main shield cover of flange is welded with quiet cover plate and is fixed together.
The moving contact rod that vacuum interrupter also comprises bellows and fixedly welds with bellows, one end of the close moving contact rod of bellows bends and is formed to the close welding edge of moving contact rod, and bellows is welded together by described welding edge and moving contact rod.
The slope transitions that described welding edge comprises the weld part parallel with the end face of moving contact rod and is connected between weld part and bellows other parts.
The dynamic cover plate that vacuum interrupter also comprises fairlead and is fixed together with fairlead, described fairlead is metal fairlead and welds with dynamic cover plate to be fixed together.
One end due to the close quiet cover plate of the main shield cover of vacuum interrupter of the present invention is provided with the flange of outwards turnover, and together with the end of flange is welded and fixed with porcelain shell, the bending place of the other parts relative to main shield cover of flange is welded with quiet cover plate and is fixed together, namely main shield cover welds with porcelain shell and quiet cover plate simultaneously, thus the quiet end shield that can save in existing vacuum interrupter, and then greatly can reduce vacuum interrupter size in the corresponding direction, reduce the volume of vacuum interrupter, the volume solving the existence of existing vacuum interrupter is large, the problem that installation dimension is large, simultaneously, the omission of quiet end shield also can reduce the production cost of vacuum interrupter.
Further, owing to being that bending forms, welding edge maximizing is set utilize bellows, make bellows reach maximum effective length, thus the length of bellows entirety can be reduced, reach the object reducing vacuum interrupter volume; Due to parallel with the end face (solder side for bellows-welding) of moving contact rod, weld part ensure that the intensity that bellows welds with moving contact rod, and slope transitions then facilitates welding between weld part with moving contact rod; Fairlead taps into dynamic bridge welding and dispenses corresponding flange connection, thus also can contribute to reducing of vacuum interrupter volume.
Accompanying drawing explanation
Fig. 1 is the structural representation of vacuum interrupter;
Fig. 2 be bellows with moving contact rod coordinate schematic diagram.
Embodiment
The embodiment of vacuum interrupter, as shown in Figure 1-2, this vacuum interrupter comprises porcelain shell 11, main shield cover 12, moved end radome 13, quiet cover plate 14, bellows 15, moving contact rod 16, dynamic cover plate 17 and fairlead 18.
Porcelain shell 11 is metallization porcelain shell, in the present embodiment, porcelain shell 11 cylindrically, together with its one end is welded and fixed with moved end radome 13, the other end welds with main shield cover 12 and quiet cover plate 14 simultaneously, adopt main shield cover 12 simultaneously with porcelain shell 11 and quiet cover plate 14 welded structure after, just can save quiet end shield of the prior art, thus reach the object of the volume reducing vacuum interrupter.For the Welding Structure of porcelain shell 11 and main shield cover 12 and quiet cover plate 14, hereafter will leftly introduce in detail.
One end of the close quiet cover plate 14 of main shield cover 12 is provided with the flange of outwards turnover, the other end is inserted in porcelain shell 11, wherein main shield cover 12 is welded with porcelain shell 11 by the end of its flange, together with being welded and fixed with quiet cover plate 14 by the bending place of the other parts relative to main shield cover 12 of its flange, in being provided with the concave structure with its shape adaptation towards the side of described bending place on quiet cover plate 14.
Bellows 15 is connected to the position between dynamic cover plate 17 and moving contact rod 16, its one end is welded with dynamic cover plate 17, the other end welds with moving contact rod 16, in the present embodiment, Welding Structure between bellows 15 from moving contact rod 16 and the Welding Structure between bellows of the prior art and moving contact rod are different, be in particular in that one end of the close moving contact rod 16 of bellows 15 bends and formed to the close welding edge of moving contact rod 16, the slope transitions that welding edge comprises the weld part parallel with the end face of moving contact rod 16 and is connected between weld part and bellows other parts, bellows 15 is welded together by described welding edge and moving contact rod 16.At the other end, the Welding Structure between bellows 15 with dynamic cover plate 17 is identical with the Welding Structure between bellows 15 and moving contact rod 16.Adopt above-mentioned Welding Structure maximizedly can utilize the effective length of bellows 15, thus reach the overall Len req of reduction bellows 15, reduce the effect of vacuum interrupter volume.
Fairlead 18 is metal fairlead, together with it is welded and fixed with dynamic cover plate 17 by the mode of welding, the fairlead 18 connected by described Welding Structure and dynamic cover plate 17 eliminate the flange connection in prior art between fairlead 18 and dynamic cover plate 17, can play the effect reducing vacuum interrupter volume.
In this vacuum interrupter, first have employed structure main shield cover and quiet end shield united two into one, make main shield cover parts just can complete the function of main shield cover and quiet end shield two parts in prior art; In addition, the special Welding Structure of bellows and moving contact rod and moved end radome efficiently utilizes bellows, makes the effect of bellows perform to maximization; The assembly structure of fairlead then eliminates the parts such as adpting flange of the prior art.Each part mentioned above structure all serves the effect reducing vacuum interrupter overall volume and installation dimension from different angles, thus solves the problem that volume is large, installation dimension is large of existing vacuum interrupter existence.
The embodiment of vacuum circuit-breaker, comprises vacuum interrupter, and the structure of vacuum interrupter is identical with the structure of the embodiment of above-mentioned vacuum interrupter, and it will not go into details herein.
Claims (8)
1. vacuum interrupter, comprise porcelain shell, main shield cover and quiet cover plate, it is characterized in that, described porcelain shell is metallization porcelain shell, one end of the close quiet cover plate of main shield cover is provided with the flange of outwards turnover, together with the end of described flange is welded and fixed with porcelain shell, the bending place of the other parts relative to main shield cover of flange is welded with quiet cover plate and is fixed together.
2. vacuum interrupter according to claim 1, it is characterized in that, the moving contact rod also comprising bellows and fixedly weld with bellows, one end of the close moving contact rod of bellows bends and is formed to the close welding edge of moving contact rod, and bellows is welded together by described welding edge and moving contact rod.
3. vacuum interrupter according to claim 2, is characterized in that, the slope transitions that described welding edge comprises the weld part parallel with the end face of moving contact rod and is connected between weld part and bellows other parts.
4. the vacuum interrupter according to any one of claim 1-3, is characterized in that, the dynamic cover plate also comprising fairlead and be fixed together with fairlead, and described fairlead is metal fairlead and welds with dynamic cover plate to be fixed together.
5. vacuum circuit-breaker, comprise vacuum interrupter, vacuum interrupter comprises porcelain shell, main shield cover and quiet cover plate, it is characterized in that, described porcelain shell is metallization porcelain shell, one end of the close quiet cover plate of main shield cover is provided with the flange of outwards turnover, and together with the end of described flange is welded and fixed with porcelain shell, the bending place of the other parts relative to main shield cover of flange is welded with quiet cover plate and is fixed together.
6. vacuum circuit-breaker according to claim 5, it is characterized in that, the moving contact rod that vacuum interrupter also comprises bellows and fixedly welds with bellows, one end of the close moving contact rod of bellows bends and is formed to the close welding edge of moving contact rod, and bellows is welded together by described welding edge and moving contact rod.
7. vacuum circuit-breaker according to claim 6, is characterized in that, the slope transitions that described welding edge comprises the weld part parallel with the end face of moving contact rod and is connected between weld part and bellows other parts.
8. the vacuum circuit-breaker according to any one of claim 5-7, is characterized in that, the dynamic cover plate that vacuum interrupter also comprises fairlead and is fixed together with fairlead, and described fairlead is metal fairlead and welds with dynamic cover plate to be fixed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410761060.5A CN104538246B (en) | 2014-12-12 | 2014-12-12 | Vacuum arc-extinguishing chamber and vacuum breaker with vacuum arc-extinguishing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410761060.5A CN104538246B (en) | 2014-12-12 | 2014-12-12 | Vacuum arc-extinguishing chamber and vacuum breaker with vacuum arc-extinguishing chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104538246A true CN104538246A (en) | 2015-04-22 |
| CN104538246B CN104538246B (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410761060.5A Active CN104538246B (en) | 2014-12-12 | 2014-12-12 | Vacuum arc-extinguishing chamber and vacuum breaker with vacuum arc-extinguishing chamber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841452A (en) * | 2017-11-28 | 2019-06-04 | 天津平高智能电气有限公司 | A kind of vacuum interrupter and its contact shielding construction |
| CN112992576A (en) * | 2019-12-17 | 2021-06-18 | 天津平高智能电气有限公司 | Vacuum interrupter assembly fixture |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10241511A (en) * | 1998-02-12 | 1998-09-11 | Hitachi Ltd | Vacuum circuit breaker electrode material and vacuum circuit breaker |
| CN2570965Y (en) * | 2002-09-16 | 2003-09-03 | 成都旭光电子股份有限公司 | Low-voltage vacuum quenching chamber |
| CN102148109A (en) * | 2010-02-05 | 2011-08-10 | 昆山国力真空电器有限公司 | Vacuum switch tube for low-voltage circuit breaker |
-
2014
- 2014-12-12 CN CN201410761060.5A patent/CN104538246B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10241511A (en) * | 1998-02-12 | 1998-09-11 | Hitachi Ltd | Vacuum circuit breaker electrode material and vacuum circuit breaker |
| CN2570965Y (en) * | 2002-09-16 | 2003-09-03 | 成都旭光电子股份有限公司 | Low-voltage vacuum quenching chamber |
| CN102148109A (en) * | 2010-02-05 | 2011-08-10 | 昆山国力真空电器有限公司 | Vacuum switch tube for low-voltage circuit breaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841452A (en) * | 2017-11-28 | 2019-06-04 | 天津平高智能电气有限公司 | A kind of vacuum interrupter and its contact shielding construction |
| CN109841452B (en) * | 2017-11-28 | 2022-08-19 | 天津平高智能电气有限公司 | Vacuum arc extinguish chamber and contact shielding structure thereof |
| CN112992576A (en) * | 2019-12-17 | 2021-06-18 | 天津平高智能电气有限公司 | Vacuum interrupter assembly fixture |
| CN112992576B (en) * | 2019-12-17 | 2022-11-25 | 天津平高智能电气有限公司 | Vacuum interrupter assembly fixture |
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| Publication number | Publication date |
|---|---|
| CN104538246B (en) | 2017-05-24 |
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