CN101809702B - Method for producing a hollow cylindrical component, in particular a shielding for a vacuum switching tube, and vacuum switching tube - Google Patents
Method for producing a hollow cylindrical component, in particular a shielding for a vacuum switching tube, and vacuum switching tube Download PDFInfo
- Publication number
- CN101809702B CN101809702B CN2008801094367A CN200880109436A CN101809702B CN 101809702 B CN101809702 B CN 101809702B CN 2008801094367 A CN2008801094367 A CN 2008801094367A CN 200880109436 A CN200880109436 A CN 200880109436A CN 101809702 B CN101809702 B CN 101809702B
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- CN
- China
- Prior art keywords
- fringe region
- hollow cylinder
- described method
- heated
- vacuum switch
- 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
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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
- H01H33/60—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
-
- 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
- H01H2033/66269—Details relating to the materials used for screens in vacuum 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
- H01H33/60—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
- H01H2033/66284—Details relating to the electrical field properties of screens in vacuum switches
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Details Of Aerials (AREA)
- Manufacture Of Switches (AREA)
Abstract
The invention relates to a method for producing a hollow cylindrical component, in particular a shielding for a vacuum switching tube, and tp said vacuum switching tube. A vacuum switching tube (1) comprises at least one shielding (11) in the form of a hollow cylinder whose edge regions (14, 15) have been rounded under the effect of heat.
Description
Technical field
The present invention relates to a kind of method of the radome that is used to make hollow cylindrical component, be particularly useful for vacuum switch tube and relate to vacuum switch tube with hollow cylindrical component; In said method, make a kind of hollow cylinder section of metal, and then the end profile on the annular rim region of said hollow cylinder section is out of shape.
Background technology
The metallic vapour that forms because of arcing on the vacuum switch tube contact contact-making surface is deposited on the medial surface of vacuum switch tube shell, on vacuum switch tube, uses the hollow cylinder body structure and the radome of the hollow cylinder bodily form especially.In order to reduce the inner too high electric field of vacuum switch tube, perhaps cylindrical fringe region or end profile are out of shape through the method for forming usually, so that substitute sharp edge with radius by means of cut.When adopting the method for forming, receive the restriction of method, can not be lower than certain less radius.In addition, the profile that the hollow cylindrical component edge region of vacuum switch tube is out of shape is a part of preparing to be used for electroplating processes, and these parts must be washed bothersomely and be dry.
Adopt the cut method if do not adopt the method for forming, then take place, the restriction of the minimum coaxiality deviation that receives to determine by drawing process, when making end radii, the profile on the hollow cylinder is less than desired end profile.
Summary of the invention
Technical problem to be solved by this invention is; A kind of method of the radome that is used to make hollow cylindrical component, be particularly useful for vacuum switch tube is provided, and said method has reduced field peak value and the too high field on the fringe region of vacuum switch tube boring cylinder bodily form member with simple mode.In addition, problem to be solved by this invention is to provide a kind of and have the vacuum switch tube of improved radome in addition at zone line.
This technical problem is to solve like this in this paper starts the method for said type according to the present invention; The hollow cylinder section is directed along gravity direction by means of its longitudinal axis; And the fringe region of the annular of hollow cylinder section; By the local temperature that is heated to the metal material generation liquefaction that is enough to make the hollow cylinder section that is positioned at fringe region momently; Produce distortion so that make full use of the surface tension of liquid material, and the corresponding fringe region of following the hollow cylinder section that is liquefied cools off.
When implementing this method, extend and seamed edge is up heat-treated if make the longitudinal axis of hollow cylindrical component be parallel to gravity, be suitable.In order to contain the formation of oxide, in protective atmosphere, fringe region is heated, be suitable.The acquisition of heat energy can realize through flame, electric arc, plasma beam, laser beam or the electron beam of heat release.
Be characterised in that according to vacuum switch tube of the present invention it has the member of the hollow cylinder bodily form, said member according to the method described above with and extend type make.
Description of drawings
Next according to accompanying drawing embodiments of the invention are specified.In the accompanying drawing:
Fig. 1 illustrates according to the end view shown in the partly cut-away of the vacuum switch tube of a kind of embodiment of the present invention,
Fig. 2 illustrates the amplification view of hollow cylinder section, and the seamed edge of said hollow cylinder section is processed through heat effect, and
Fig. 3 illustrates the end view that has as shown in other the partly cut-away of vacuum switch tube of the hollow cylindrical component that is used for uniform electric field of the radome of vapor shield cover and two.
Embodiment
Fig. 1 illustrates the end view shown in the partly cut-away of vacuum switch tube 1; Said vacuum switch tube 1 has the ceramic shell 2a and the 2b of the hollow cylinder bodily form of two-piece type; Said housing parts 2a and 2b pass through metal cover board 3 and 4 respectively by vacuum-tight closing on end face, thereby constitute vacuum interrupter 5.Cover plate 3 is penetrated by stationary contact bar 6 vacuum-tights.On an end freely that is arranged in vacuum interrupter 5 of stationary contact bar 6, laid fixed contact 7.
The switch lever 8 that cover plate 4 is carried moving contact 9 passes.Said moving contact 9 has the gap with fixed contact 7, so that produce the magnetic field that helps to extinguish the electric arc of being pulled out.Switch lever 8 and moving contact 9 can prolong guiding with vertically moving; Moving contact 9 thereby be positioned at the separation point position shown in Fig. 1 from it; Be transferred to contact position, on said contact position, moving contact 9 is close to fixed contact 7 and the electric current vacuum switch tube 1 of flowing through can be arranged.In order to take the mobility of moving contact 9 into account, this moving contact 9 is connected with cover plate 4 vacuum-tights through a kind of gathering the in the metal bellows that elongates 10.
If contact 7 and 9 disconnected from each other when having electric current to flow through vacuum switch tube 1 is then pulled out electric arc between contact 7 and 9.At the contact gap area, arcing takes place on the contact-making surface of contact 7 owing to higher arc temperature and therefore form metallic vapour.
For fear of the inboard of this metal vapor deposition at ceramic shell 2a and 2b, be provided with a kind of radome of forming by shielding element or masked segment 12 and standing part 13 11, it for example is made of copper.Masked segment 12 surrounds the contact device of being made up of fixed contact 7 and moving contact 9.In Fig. 1, be plotted in the masked segment 12 of vacuum switch tube 1 inside, therefore be used as the pottery vaporization of avoiding cylindrical ceramic housing 2a and 2b.
For fixed mask part 12, itself and standing part 13 are welded.Said standing part 13 welds with the housing parts 2a and the 2b that are implemented as earthenware regularly.At this, masked segment 12 is by metal, and especially copper perhaps contains the alloy of copper, and for example copper-evanohm is formed.The high-quality steel also can be used in different ground.
Masked segment 12 as can finding out among Fig. 1, has the top edge zone 14 of spheroidization and the lower edge zone 15 of spheroidization.Said fringe region 14 and 15 design written treaties are bulb-type.They can realize the size and the structure of the control of dielectric ground and definite hollow cylinder bodily form masked segment 12.
The fringe region 14 and 15 of spheroidization constitutes the seamed edge radius thickeied on the hollow cylinder bodily form masked segment 12 and can obtain through heat effect.The profile that masked segment 12 amplified has been shown in Fig. 2 and has schematically illustrated, how to have realized distortion of materials with laser beam 19 through laser aid 17.
With half sectional view hollow cylinder bodily form masked segment 12 has been shown in Fig. 2, and for example has been laid in like this on the disk of the slow rotation that in drawing, is not illustrated, that is, with the longitudinal axis of masked segment 12 vertically, just be parallel to gravity direction.
Masked segment 12 for example is to carry out in the direction of the arrow shown in Fig. 2 21 with the speed edge of 0.3 meter of per minute when distortion around the rotation of its vertically extending axis.At this moment; Masked segment 12 on the place of the laser beam 19 of chopping appears on the seamed edge 23 being preferably; Just carrying out the heating of metal; Until reaching metal, the temperature that is liquefied of copper for example, and go up the shown bulb 25 in the right that the flat end face of the script of seamed edge 23 deforms owing to the adhesive force of the metal of liquefy and surface tension and is formed on Fig. 2 this moment.
Revolving around vertical axis in the process of three-sixth turn, the whole seamed edge 23 gone up is deformed through heat effect.At this, each fringe region 14 of masked segment 12 is heated to the needed temperature of liquefy successively and and is cooled.
If masked segment 12 is not by means of rotating disk; But the words of accomplishing near the device that is used for hot worked seamed edge 27 down by means of other permission; The then schematically liquefaction and the distortion of explanation on seamed edge 23 up in Fig. 2 also can realize on seamed edge 27 down.
Except adopting the laser aid that produces laser beam 19 to be used to make the seamed edge radius of thickening through heat effect on the hollow cylinder bodily form masked segment 12; Can also adopt other the energy; The said energy is through the suitably heat effect of metering, the result at hollow cylinder, especially produces a kind of thickening on the masked segment 12 of vacuum switch tube and ringwise profile or the bulb 25 that is similar to radius usually.
This heat effect can be especially flame through heat release obtain.Through the flame of preferred reciprocally swinging being aimed at seamed edge 23 or seamed edge 27 down up, can consider that surface tension ground carries out metal liquefaction, thereby realize uniform rounding that fringe region 14 and 15 is expected.
Another kind of unshowned in the accompanying drawings possible method is, lays electric arc, makes the heat that is produced by said electric arc can cause the liquefaction of thin material layer, and the material layer of said liquefaction is owing to surface tension is deformed into bulb 25.
The method of another kind of unshowned heat effect in the accompanying drawings is, adopts a kind of edge seamed edge 23 and/or the plasma beam or electron beam of 27 heat supplies of seamed edge down up to come rounded edges zone 14,15.
In order to be contained in the formation of oxide in the thermal deformation process; In a kind of preferred embodiment of the present invention, adopted protective atmosphere; The zone that wherein this protective atmosphere can only be arranged on heat effect perhaps can be designed to till cooling, makes whole member to be processed; Just masked segment 12 especially is among the protective atmosphere.
Based on above-mentioned method, can produce the seamed edge radius of saving volume, the optimum efficiency on diameter in the dielectric field that this seamed edge radius is a vacuum switch tube 1 and surface, thereby in the vacuum tube of vacuum switch tube 1, form compact cylindrical structure.If masked segment 12 or corresponding hollow cylinder member are used in the electroplating processes, then also will produce advantage, because can produce the geometry that can not obtain through said method.
Above-mentioned method not only can advantageously be used when manufacturing is used as the radome 11 of the vapor shield cover in the vacuum switch tube 1, but also can when making other hollow cylindrical component, use.In Fig. 3,, the vacuum switch tube 1 that a kind of vacuum switch tube 1 illustrated with combining Fig. 1 has same structure basically is shown for ease of explanation.But,, additionally have the first shimming electrode 21 and the second shimming electrode 23 at the vacuum switch tube shown in Fig. 31.Said two shimming electrodes 21,23 mechanically and are connected with metal layer 25,27 respectively with conducting electricity.Said metal layer 25,27 is used for fixing metal cover plate 3 and 4 on the end face 29,31 of housing component 2a that is implemented to earthenware and 2b.Because said metal cover plate 3 and 4 ring edge inwardly can cause electric field too high, known employing electrode comes dielectric ground controlling filed, and said electrode is bent to gutter shape towards the cylinder-shaped end of radome 11 for uniform electric field distributes.
As shown in Fig. 3, the fringe region 33,35 of shimming electrode 21,23, with the fringe region 14 and 15 of radome 11 similarly by means of said method by rounding for being bulb-type or annular approximately.Need not use the device that can be out of shape to chipless hollow cylindrical component in such a way in order to make shimming electrode 21,23; Said shimming electrode 21,23 especially is used to improve the disruptive field intensity in the vacuum switch tube 1, and wherein too high electric field reduces through structural measure.
Claims (12)
1. one kind is used to make the hollow cylindrical component method that is used for vacuum switch tube; Wherein, make the hollow cylinder section of metal, and then the end profile of the fringe region of the annular of said hollow cylinder section is out of shape; It is characterized in that; Said hollow cylinder section is directed along gravity direction by means of its longitudinal axis, and the fringe region of hollow cylinder section annular, is heated to the temperature that liquefaction takes place the metal material that is positioned at fringe region that is enough to make the hollow cylinder section momently by local; Produce distortion so that make full use of the surface tension of liquid material, and the fringe region of following the hollow cylinder section that is liquefied accordingly cools off.
2. according to the described method of claim 1, it is characterized in that, heating with respect to gravity direction fringe region up.
3. according to the described method of claim 1, it is characterized in that, heating with respect to gravity direction fringe region down.
4. each described method in requiring according to aforesaid right is characterized in that, in protective atmosphere, said fringe region is heated.
5. according to each described method in the claim 1 to 3, it is characterized in that, said fringe region is heated by means of the flame of heat release.
6. according to each described method in the claim 1 to 3, it is characterized in that, said fringe region is heated by means of electric arc.
7. according to each described method in the claim 1 to 3, it is characterized in that, said fringe region is heated by means of plasma beam.
8. according to each described method in the claim 1 to 3, it is characterized in that, said fringe region is heated by means of laser beam.
9. according to each described method in the claim 1 to 3, it is characterized in that, said fringe region is heated by means of electron beam.
10. vacuum switch tube with hollow cylindrical component (11), each the described method manufacturing during it requires according to aforesaid right.
11., it is characterized in that the member of the said hollow cylinder bodily form is shielding element (11) according to the described vacuum switch tube of claim 10.
12., it is characterized in that the member of the said hollow cylinder bodily form is shimming electrode (21,23) according to claim 10 or 11 described vacuum switch tubes.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710047475 DE102007047475B3 (en) | 2007-09-27 | 2007-09-27 | Hollow cylindrical component e.g. vapor shield, manufacturing method for vacuum interrupter, involves locally and transiently heating border areas of section to temperature for liquefying metallic material in areas, in protective atmosphere |
| DE102007047475.1 | 2007-09-27 | ||
| PCT/EP2008/062746 WO2009043771A1 (en) | 2007-09-27 | 2008-09-24 | Method for producing a hollow cylindrical component, in particular a shielding for a vacuum switching tube, and vacuum switching tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101809702A CN101809702A (en) | 2010-08-18 |
| CN101809702B true CN101809702B (en) | 2012-11-14 |
Family
ID=39869084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008801094367A Expired - Fee Related CN101809702B (en) | 2007-09-27 | 2008-09-24 | Method for producing a hollow cylindrical component, in particular a shielding for a vacuum switching tube, and vacuum switching tube |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2191487A1 (en) |
| CN (1) | CN101809702B (en) |
| DE (1) | DE102007047475B3 (en) |
| WO (1) | WO2009043771A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2682973B1 (en) * | 2012-07-02 | 2017-04-05 | ABB Schweiz AG | Circuit-breaker pole part with a heat transfer shield |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4197157A (en) * | 1975-03-19 | 1980-04-08 | Arthur D. Little, Inc. | Method for forming refractory tubing |
| CN1343999A (en) * | 2000-07-14 | 2002-04-10 | 尹顿公司 | Method and apparatus for assemlbing steam baffle into vacuum current breaker and vacuum current breaker set with same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT559958A (en) * | 1955-07-06 | 1900-01-01 | ||
| DD96170A1 (en) * | 1972-05-08 | 1973-03-12 | ||
| JP2845375B2 (en) * | 1989-04-26 | 1999-01-13 | 日本酸素株式会社 | Manufacturing method of metal thermos |
| DE19747242C2 (en) * | 1997-10-25 | 2002-02-21 | Abb Patent Gmbh | Process for producing a metal mold for vacuum chamber screens or vacuum chamber contact pieces |
| DE19926796A1 (en) * | 1999-06-11 | 2000-12-14 | Vaw Ver Aluminium Werke Ag | Welded part consists of a first component having a melt projection that protrudes from the surface of a second component |
| DE102004061497A1 (en) * | 2004-12-15 | 2006-07-06 | Siemens Ag | Shield system consisting of a copper-chromium alloy produced by fusion metallurgy |
-
2007
- 2007-09-27 DE DE200710047475 patent/DE102007047475B3/en not_active Expired - Fee Related
-
2008
- 2008-09-24 EP EP08804655A patent/EP2191487A1/en not_active Withdrawn
- 2008-09-24 CN CN2008801094367A patent/CN101809702B/en not_active Expired - Fee Related
- 2008-09-24 WO PCT/EP2008/062746 patent/WO2009043771A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4197157A (en) * | 1975-03-19 | 1980-04-08 | Arthur D. Little, Inc. | Method for forming refractory tubing |
| CN1343999A (en) * | 2000-07-14 | 2002-04-10 | 尹顿公司 | Method and apparatus for assemlbing steam baffle into vacuum current breaker and vacuum current breaker set with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101809702A (en) | 2010-08-18 |
| EP2191487A1 (en) | 2010-06-02 |
| DE102007047475B3 (en) | 2008-11-20 |
| WO2009043771A1 (en) | 2009-04-09 |
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Granted publication date: 20121114 Termination date: 20140924 |
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| EXPY | Termination of patent right or utility model |