CN109273315B - Method for fixing shielding cylinder and porcelain shell and vacuum arc-extinguishing chamber - Google Patents
Method for fixing shielding cylinder and porcelain shell and vacuum arc-extinguishing chamber Download PDFInfo
- Publication number
- CN109273315B CN109273315B CN201811237026.2A CN201811237026A CN109273315B CN 109273315 B CN109273315 B CN 109273315B CN 201811237026 A CN201811237026 A CN 201811237026A CN 109273315 B CN109273315 B CN 109273315B
- Authority
- CN
- China
- Prior art keywords
- transition ring
- shielding cylinder
- porcelain shell
- lining transition
- shell
- 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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Links
- 229910052573 porcelain Inorganic materials 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000007704 transition Effects 0.000 claims abstract description 56
- 238000003466 welding Methods 0.000 claims abstract description 14
- 238000005219 brazing Methods 0.000 claims abstract description 7
- 230000003068 static effect Effects 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 11
- 238000009987 spinning Methods 0.000 claims description 9
- 239000007769 metal material Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 238000001465 metallisation Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 3
- 238000005493 welding type Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007378 ring spinning Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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
- H01H33/664—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
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
-
- 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
- H01H2033/66276—Details relating to the mounting of screens in vacuum switches
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Insulators (AREA)
Abstract
The method for fixing the shielding cylinder and the porcelain shell comprises the following steps: machining a step on the inner wall of the porcelain shell, wherein the lower end of the step is an inclined plane; processing a lining transition ring, wherein the lining transition ring comprises a hanging part which is hung on a step and a fitting part which is fitted with the side wall of the step; and after the lining transition ring is hung on the step of the porcelain shell, the lining transition ring is welded and fixed with the shielding cylinder. The vacuum arc-extinguishing chamber comprises a porcelain shell, a lining transition ring and a shielding cylinder; the inner wall of the porcelain shell is provided with a step; the lining transition ring comprises a hanging part, a fitting part and a flaring part which are connected in sequence, wherein the hanging part is hung on the upper end surface of the step, the fitting part is fitted with the side wall of the step, and the flaring part is fitted with the inclined surface of the lower end of the step; the shielding cylinder and the lining transition ring are fixed in a welding mode. The fixing method adopts the thin-wall lining transition ring to ensure that the inner platform of the porcelain shell does not need to process a metallization layer, thereby reducing the manufacturing cost of the porcelain shell, ensuring that the shielding cylinder is fixed on the lining transition ring by brazing, being not easy to deviate and having good alignment.
Description
Technical Field
The invention belongs to the technical field of vacuum arc-extinguishing chambers, and particularly relates to a method for fixing a shielding cylinder and a porcelain shell, and a vacuum arc-extinguishing chamber for fixing the shielding cylinder and the porcelain shell by using the method.
Background
The vacuum arc-extinguishing chamber is a core component of the vacuum switch, and is required to bear, close and break normal working current and short-circuit fault current, and also to maintain good insulation capability in a switching-off state. The shielding cylinder part of the vacuum arc-extinguishing chamber is used for absorbing arc products in the current breaking process, and the inner wall of the porcelain shell is prevented from being subjected to metal vapor deposition to reduce the insulating capability.
Common shielding cylinder fixing modes include middle sealing type, exposed type, rotary pressing type of an inner table of a porcelain shell, welding type of the inner table of the porcelain shell and the like. The middle sealing type fixing mode realizes the fixation of the shielding cylinder by a brazing mode between the porcelain shell and the middle sealing ring and between the shielding cylinder and the middle sealing ring, has the advantages of firm and reliable fixation, is simple in processing of the porcelain shell, and does not need to process steps on the inner wall, but needs two sections of porcelain shells, so that two welding seams are increased, the air leakage probability is increased, and the possibility that the middle sealing part discharges the outer surface of the porcelain shell exists. The exposed fixing mode is equivalent to the evolution of middle sealing, the middle sealing ring is canceled in the fixing mode, the shielding barrel is exposed, the two ends of the shielding barrel are directly soldered with the end face of the porcelain shell, the diameter of the shielding barrel is increased under the condition that the diameter of the porcelain shell is not increased, and therefore the method is suitable for the arrangement of the electrode with larger diameter and larger breaking capacity, but the height of the arc extinguishing chamber can be obviously increased by adopting the method, and the miniaturization of a product is not facilitated. The inner platform spinning type ceramic shell is fixed in a mode that a section of ceramic shell is adopted, a step for fixing the shielding cylinder is arranged on the inner wall of the ceramic shell, one port of the shielding cylinder is spun through a mechanical spinning mode, the shielding cylinder is suspended and fixed on the inner platform of the ceramic shell after the spinning port of the shielding cylinder is turned up, the mode has no problem of discharging at the middle sealing part of the middle sealing type, and the method has the advantages of low cost and simplicity and convenience in operation, but has the defect that the shielding is easy to loose and skew through Gao Wenhou after the shielding is fixed. The welding type fixing mode of the inner platform of the porcelain shell adopts a section of porcelain shell with a step for fixing the shielding cylinder on the inner wall, but the step needs to be processed with a metallized layer so as to be soldered with the shielding cylinder.
Disclosure of Invention
The invention aims to provide a method for fixing a shielding cylinder and a porcelain shell, which adopts a section of porcelain shell with an inner step and no need of processing a metallization layer, introduces a thin-wall part of a lining transition ring, realizes the same effect of processing the metallization layer on the inner platform of the porcelain shell by a lining transition ring spinning wrapping mode, and fixes the shielding cylinder and the lining transition ring on the porcelain shell by a welding mode.
The invention also discloses a vacuum arc-extinguishing chamber for fixing the shielding cylinder and the porcelain shell by using the fixing method.
The invention adopts a technical scheme that: a method for fixing a shielding cylinder and a porcelain shell comprises the following steps:
a section of porcelain shell is processed, a step is processed on the inner wall of the porcelain shell, and the lower end of the step is an inclined plane;
processing a lining transition ring made of metal material and suitable for the step shape, wherein the lining transition ring comprises a hanging part hung on the step and a fitting part fitted with the side wall of the step, and the hanging part is connected with the fitting part;
the lining transition ring is hung on the step of the porcelain shell;
and finally, welding and fixing the shielding cylinder with the lining transition ring in a welding mode, thereby completing the fixing work of the shielding cylinder and the porcelain shell.
The present invention is also characterized in that,
one end of the attaching part far away from the hanging part is connected with an expanding part.
Before the lining transition ring is hung on the step of the porcelain shell and welded with the shielding cylinder, the method further comprises the steps of: and wrapping the flaring part of the lining transition ring at the inclined surface of the lower end of the step of the porcelain shell in a spinning mode.
The shielding cylinder and the lining transition ring are fixed in a brazing mode.
The other technical scheme adopted by the invention is as follows: a vacuum arc-extinguishing chamber comprises a porcelain shell, a lining transition ring made of metal and a shielding cylinder;
the inner wall of the porcelain shell is provided with a step, and the lower end of the step is an inclined plane;
the lining transition ring comprises a hanging part, a fitting part and an expanding part which are sequentially connected, wherein the hanging part is hung on the upper end face of the step, the fitting part is fitted with the side wall of the step, and the expanding part is fitted with the inclined plane of the lower end of the step;
the shielding cylinder and the lining transition ring are fixed in a welding mode.
The beneficial effects of the invention are as follows: according to the method for fixing the shielding cylinder and the porcelain shell, the thin-wall lining transition ring scheme is adopted, so that a metallization layer is not required to be processed on the inner table of the porcelain shell, the manufacturing cost of the porcelain shell is reduced, the middle part of the shielding cylinder is fixed on the lining transition ring in a brazing manner, the shielding cylinder is firmly fixed, is not easy to deflect, and has good alignment property. The fixing method has the advantages of the two fixing modes of the rotary pressing type of the inner table of the porcelain shell and the welding type of the inner table of the porcelain shell, has the technical advantages of firm and reliable fixing of the shielding cylinder and good fixing effect, and has the advantage of low processing cost of the porcelain shell. According to the vacuum arc extinguishing chamber, the shielding cylinder and the porcelain shell are firmly fixed by adopting the fixing mode, so that the performance of the vacuum arc extinguishing chamber is improved.
Drawings
FIG. 1 is a schematic view of the fixed state of the shield canister and porcelain shell of the present invention;
fig. 2 is an enlarged view at S in fig. 1;
FIG. 3 is a schematic structural view of the liner transition ring of the present invention;
FIG. 4 is a schematic illustration of the location of the liner transition ring of the present invention with the porcelain shell prior to spinning;
FIG. 5 is a schematic illustration of the location of the liner transition ring of the present invention after spinning with a porcelain shell;
fig. 6 is a schematic structural view of the vacuum interrupter of the present invention.
In the figure, a guide sleeve 1, a movable end cover plate 2, a porcelain shell 3, a lining transition ring 4, a shielding cylinder 5, a static conductive rod 6, a static end cover plate 7, a movable conductive rod 8, a corrugated pipe 9, a movable electrode 10, an electrostatic electrode 11, a pressure equalizing cover 12 and solder 13.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
The invention provides a method for fixing a shielding cylinder and a porcelain shell, which comprises the following steps:
a section of porcelain shell 3 is processed, a step is processed on the inner wall of the porcelain shell 3, and the lower end of the step is an inclined plane;
processing a lining transition ring 4 made of metal material and adapted to the shape of a step, wherein the lining transition ring 4 comprises a hanging part hung on the step and a fitting part fitted with the side wall of the step, and the hanging part is connected with the fitting part;
the lining transition ring 4 is hung on the step of the porcelain shell 3;
and finally, welding and fixing the shielding cylinder 5 with the lining transition ring 4 in a welding mode, namely, finishing the fixing work of the shielding cylinder 5 and the porcelain shell 3.
Referring to fig. 1 and 2, a schematic structural diagram after the welding is completed and an enlarged view of the welding position are shown.
Referring to fig. 3 to 5, the liner transition ring 4 further has a flared portion connected to an end of the fitting portion remote from the hitching portion. The lining transition ring can be made of oxygen-free copper or pure copper, stainless steel, electrician pure iron and other metal materials, is a thin-wall stamping part, and has the wall thickness of 0.3-1 mm.
Before the lining transition ring 4 is hung on the step of the porcelain shell 3 and welded with the shielding cylinder, the method further comprises the steps of: and wrapping the flaring part of the lining transition ring at the inclined surface of the lower end of the step of the porcelain shell in a spinning mode. This step is evident from the variation of fig. 4 to 5.
Preferably, the shield cylinder and the lining transition ring are fixed by brazing, and the brazing material 13 is deposited on the hanging portion of the lining transition ring 4.
The porcelain shell adopted by the invention is characterized in that a step is processed on the inner wall of the porcelain shell, the step is used for fixing the shielding cylinder, and a metallization layer is not required to be processed on the surface of the step. The lining transition ring part is assembled on the inner step of the porcelain shell, and the lining transition ring is wrapped on the inner step in a mechanical spinning mode, so that the same effect of processing the metallization layer on the inner platform of the porcelain shell is achieved. And then the shielding cylinder is assembled on the lining transition ring and is brazed and fixed with the lining transition ring, the welding part of the shielding cylinder is positioned in the middle part of the shielding cylinder or deviates from the middle part by a certain distance, and finally the reliable fixation of the shielding cylinder on the inner step of the porcelain shell is realized.
The invention also discloses a vacuum arc-extinguishing chamber which at least comprises a porcelain shell 3, a lining transition ring 4 made of metal materials and a shielding cylinder 5;
the inner wall of the porcelain shell 3 is provided with a step, and the lower end of the step is an inclined plane;
the lining transition ring 4 comprises a hanging part, a fitting part and an expanding part which are sequentially connected, wherein the hanging part is hung on the upper end face of the step, the fitting part is fitted with the side wall of the step, and the expanding part is fitted with the inclined plane of the lower end of the step;
the shielding cylinder 5 and the lining transition ring 4 are fixed in a welding mode.
The ceramic shell and the shielding cylinder of the vacuum arc-extinguishing chamber adopt the fixing mode by using the lining transition ring, and the structures of other parts are not different from the prior art. A specific vacuum arc-extinguishing chamber structure is shown in fig. 6, and further comprises a movable conducting rod 8 and a static conducting rod 6 which respectively penetrate through the porcelain shell 3 and the shielding cylinder 5, wherein a movable electrode 10 and a static electrode 11 are respectively arranged at opposite ends of the movable conducting rod 8 and the static conducting rod 6, a corrugated pipe 9 is arranged on the movable conducting rod, a pressure equalizing cover 12 is arranged on the static conducting rod 6, the movable conducting rod 8 and the static conducting rod 6 are respectively fixed on the porcelain shell 3 through a movable end cover plate 2 and a static end cover plate 7, and a guide sleeve 1 is further arranged on the circumference of the movable conducting rod 8 outside the porcelain shell 3.
Claims (3)
1. The method for fixing the shielding cylinder and the porcelain shell is characterized by comprising the following steps:
a section of porcelain shell is processed, a step is processed on the inner wall of the porcelain shell, and the lower end of the step is an inclined plane;
processing a lining transition ring made of metal material and suitable for the step shape, wherein the lining transition ring comprises a hanging part hung on the step and a fitting part fitted with the side wall of the step, and the hanging part is connected with the fitting part;
the lining transition ring is hung on the step of the porcelain shell;
finally, the shielding cylinder is welded and fixed with the lining transition ring in a welding mode, and the fixation work of the shielding cylinder and the porcelain shell is completed;
one end of the attaching part, which is far away from the hitching part, is connected with a flaring part;
before the lining transition ring is hung on the step of the porcelain shell and welded with the shielding cylinder, the method further comprises the steps of: and wrapping the flaring part of the lining transition ring at the inclined surface of the lower end of the step of the porcelain shell in a spinning mode.
2. The method for fixing a shielding cylinder and a porcelain shell according to claim 1, wherein the shielding cylinder and the lining transition ring are fixed in a brazing mode.
3. The vacuum arc extinguishing chamber is characterized by comprising a porcelain shell, a lining transition ring made of metal and a shielding cylinder;
the inner wall of the porcelain shell is provided with a step, and the lower end of the step is an inclined plane;
the lining transition ring comprises a hanging part, a fitting part and an expanding part which are sequentially connected, wherein the hanging part is hung on the upper end face of the step, the fitting part is fitted with the side wall of the step, and the expanding part is fitted with the inclined plane of the lower end of the step;
the shielding cylinder and the lining transition ring are fixed in a welding mode;
the ceramic shell is provided with a ceramic shell, a shielding cylinder is arranged on the ceramic shell, a movable conducting rod and a static conducting rod penetrate through the ceramic shell and the shielding cylinder respectively, a movable electrode and a static electrode are arranged at opposite ends of the movable conducting rod and the static conducting rod respectively, a corrugated pipe is arranged on the movable conducting rod, a voltage equalizing cover is arranged on the static conducting rod, the movable conducting rod and the static conducting rod are fixed on the ceramic shell through a movable end cover plate and a static end cover plate respectively, and a guide sleeve is further arranged on the circumference of the movable conducting rod outside the ceramic shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811237026.2A CN109273315B (en) | 2018-10-23 | 2018-10-23 | Method for fixing shielding cylinder and porcelain shell and vacuum arc-extinguishing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811237026.2A CN109273315B (en) | 2018-10-23 | 2018-10-23 | Method for fixing shielding cylinder and porcelain shell and vacuum arc-extinguishing chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109273315A CN109273315A (en) | 2019-01-25 |
| CN109273315B true CN109273315B (en) | 2024-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811237026.2A Active CN109273315B (en) | 2018-10-23 | 2018-10-23 | Method for fixing shielding cylinder and porcelain shell and vacuum arc-extinguishing chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109273315B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3916750A4 (en) * | 2019-02-06 | 2022-08-24 | Meidensha Corporation | Vacuum interrupter |
| CN111613477B (en) * | 2020-05-20 | 2022-04-15 | 宁波益舜电气有限公司 | Shielding cylinder and production process thereof |
| CN111916303A (en) * | 2020-09-04 | 2020-11-10 | 浙江瑞光真空电气有限公司 | Vacuum switch tube for circuit breaker and manufacturing method of shell of vacuum switch tube |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4746777A (en) * | 1986-07-11 | 1988-05-24 | Siemens Aktiengesellschaft | Vacuum switching tube |
| CN202905584U (en) * | 2012-11-16 | 2013-04-24 | 锦州华光玻璃开关管有限公司 | Anti-breakdown ceramic vacuum switch tube |
| CN204884999U (en) * | 2015-05-26 | 2015-12-16 | 温州浙光电子有限公司 | A vacuum interrupter metallic shield section of thick bamboo constructs with ceramic cartridge's sealing -in transition loop |
| CN208954891U (en) * | 2018-10-23 | 2019-06-07 | 陕西宝光真空电器股份有限公司 | A kind of vacuum interrupter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201163595Y (en) * | 2008-03-03 | 2008-12-10 | 山东晨鸿电气有限公司 | Porcelain case component of vacuum arc-extinguishing chamber |
| CN201667315U (en) * | 2010-01-22 | 2010-12-08 | 陕西宝光真空电器股份有限公司 | Fixing structure for ceramic housing and shielding cylinder of vacuum arc extinguishing chamber |
| CN203503543U (en) * | 2013-09-23 | 2014-03-26 | 中国振华电子集团宇光电工有限公司（国营第七七一厂） | Shielding cylinder fixing mode of vacuum arc extinguish chamber |
-
2018
- 2018-10-23 CN CN201811237026.2A patent/CN109273315B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4746777A (en) * | 1986-07-11 | 1988-05-24 | Siemens Aktiengesellschaft | Vacuum switching tube |
| CN202905584U (en) * | 2012-11-16 | 2013-04-24 | 锦州华光玻璃开关管有限公司 | Anti-breakdown ceramic vacuum switch tube |
| CN204884999U (en) * | 2015-05-26 | 2015-12-16 | 温州浙光电子有限公司 | A vacuum interrupter metallic shield section of thick bamboo constructs with ceramic cartridge's sealing -in transition loop |
| CN208954891U (en) * | 2018-10-23 | 2019-06-07 | 陕西宝光真空电器股份有限公司 | A kind of vacuum interrupter |
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| Publication number | Publication date |
|---|---|
| CN109273315A (en) | 2019-01-25 |
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