CN112164618B - High coaxiality porcelain shell assembly - Google Patents
High coaxiality porcelain shell assembly Download PDFInfo
- Publication number
- CN112164618B CN112164618B CN202011069164.1A CN202011069164A CN112164618B CN 112164618 B CN112164618 B CN 112164618B CN 202011069164 A CN202011069164 A CN 202011069164A CN 112164618 B CN112164618 B CN 112164618B
- Authority
- CN
- China
- Prior art keywords
- porcelain shell
- fixing ring
- porcelain
- wall
- coaxiality
- 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
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
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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
- H01H33/662—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
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
- H01H2033/66215—Details relating to the soldering or brazing of vacuum switch housings
-
- 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)
Abstract
The invention discloses a high-coaxiality porcelain shell assembly which is mainly used in vacuum switch equipment and particularly belongs to a vacuum arc-extinguishing chamber. The wall of the first fixing ring and the wall of the second fixing ring are respectively provided with at least 3 positioning claws which are uniformly distributed along the circumferential direction, and the middle part of the outer wall of the shielding cover is provided with a drum rib ring belt. The high-coaxiality porcelain shell assembly can ensure that all parts have good coaxiality during assembly and welding, so that the yield of the vacuum arc extinguishing chamber is improved.
Description
Technical Field
The invention relates to a high-coaxiality porcelain shell assembly, belongs to the technical field of vacuum switching equipment, and particularly belongs to the field of vacuum arc-extinguishing chambers.
Background
In the porcelain shell assembly of the vacuum arc-extinguishing chamber, the porcelain shell is taken as a part of the shell to provide external insulation for the vacuum arc-extinguishing chamber, and also takes part of the internal insulation together with the shielding cover. The shielding case not only can shield metal vapor generated by an electric arc to avoid polluting the inner wall of the porcelain shell and maintain good insulating property of the porcelain shell, but also plays a role in homogenizing the intensity of an electric field in the vacuum arc-extinguishing chamber. The advantages and disadvantages of the coaxiality of the shielding cover and the porcelain shell have direct influence on the electric field intensity, and the porcelain shell component with high coaxiality can ensure the uniformity of the electric field intensity of the vacuum arc-extinguishing chamber, so that the yield of the vacuum arc-extinguishing chamber is improved.
The existing porcelain shell assembly structure mostly adopts a mode that a shielding cover penetrates through a fixed ring and a porcelain shell and is welded, no radial positioning means are arranged between the porcelain shell and the shielding cover and between the porcelain shell and the fixed ring, radial sliding can be generated between the porcelain shell and the fixed ring along with melting of welding flux during high-temperature brazing, coaxiality of the shielding cover and other parts inside a vacuum arc-extinguishing chamber is reduced, and electric performance of a product is affected.
Disclosure of Invention
The invention aims to provide a porcelain shell component with high coaxiality, so as to ensure good coaxiality between a shielding cover and other parts in a vacuum arc-extinguishing chamber and improve the yield of the vacuum arc-extinguishing chamber.
The invention is realized by adopting the following technical scheme:
a high axiality porcelain shell subassembly, including first porcelain shell, first retainer plate, second porcelain shell, shield cover, first porcelain shell and second porcelain shell inner chamber set up the shield cover, be equipped with first retainer plate and second retainer plate between first porcelain shell and the second porcelain shell, the shield cover is connected with first porcelain shell, second porcelain shell respectively through first retainer plate and second retainer plate.
Preferably, the first fixing ring and the second fixing ring are welded back to back and are respectively welded with the first porcelain shell and the second porcelain shell, the inner cavities of the first porcelain shell and the second porcelain shell are provided with shielding covers, and the shielding covers sequentially penetrate through the first porcelain shell, the first fixing ring, the second fixing ring and the second porcelain shell and are welded with the first fixing ring and the second fixing ring.
Preferably, a positioning claw I is arranged on the wall of the first fixing ring.
Preferably, a positioning claw II is arranged on the wall of the second fixing ring.
Preferably, the number of the positioning claws I is at least 3, and the positioning claws I are uniformly distributed along the circumferential direction.
Preferably, the number of the positioning claws II is at least 3, and the positioning claws II are uniformly distributed along the circumferential direction.
Preferably, a drum rib ring belt is arranged at the middle part of the outer wall of the shielding cover.
Preferably, the positioning claw I of the first fixing ring supports and positions the inner wall of the first porcelain shell; the positioning claw II of the second fixing ring supports and positions the inner wall of the second porcelain shell. The positioning claw I of the first fixing ring and the positioning claw II of the second fixing ring are respectively contacted with the inner walls of the first porcelain shell and the second porcelain shell, play a role in supporting and positioning, and ensure that the radial relative positions among the first porcelain shell, the first fixing ring, the second fixing ring and the second porcelain shell are fixed.
Preferably, the inner holes of the first fixing ring and the second fixing ring are tightly matched with the outer cylindrical surface of the shielding cover, and the inner holes of the first fixing ring and the second fixing ring are matched with the outer cylindrical surface of the shielding cover in size, so that the radial relative positions among the shielding cover, the first fixing ring and the second fixing ring are ensured to be fixed; the drum rib ring belt of the shielding cover is clamped by the first fixing ring and the second fixing ring, so that the axial relative position among the shielding cover, the first fixing ring and the second fixing ring is ensured to be fixed.
The beneficial effects of the invention are as follows:
according to the high-coaxiality porcelain shell assembly, the positions of all parts cannot be moved along with melting of solder during high-temperature brazing, good coaxiality during assembly can be maintained, and the yield of products is improved.
Drawings
FIG. 1 is a schematic view of a prior art porcelain shell assembly;
FIG. 2 is a cross-sectional view of a high coaxiality porcelain shell assembly structure provided by an embodiment of the invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A;
fig. 4 is a schematic structural diagram of a first fixing ring and a second fixing ring according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a shielding case according to an embodiment of the present invention.
In the figure, 1, a first porcelain shell; 2. a first fixing ring; 21. a positioning claw I; 3. a second fixing ring; 31. a positioning claw II; 4. a second porcelain shell; 5. a shield; 51. a drum rib ring belt.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in the figure, the high-coaxiality porcelain shell assembly comprises a first porcelain shell 1, a first fixing ring 2, a second fixing ring 3, a second porcelain shell 4 and a shielding cover 5, wherein 4 positioning claws I21 are uniformly arranged on the outer wall of the circumferential surface of the first fixing ring 2 along the circumferential direction, 4 positioning claws II 31 are uniformly arranged on the outer wall of the circumferential surface of the second fixing ring 3 along the circumferential direction, and a drum rib ring belt 51 is arranged at the middle part of the outer wall of the shielding cover 5.
The shielding cover 5 sequentially penetrates through the first porcelain shell 1, the first fixing ring 2, the second fixing ring 3 and the second porcelain shell 4, the shielding cover 5 is welded with the first porcelain shell 1 and the second porcelain shell 4 through the first fixing ring 2 and the second fixing ring 3, and the first fixing ring 2 and the second fixing ring 3 are welded together back to back.
The positioning claw I21 of the first fixing ring 2 supports and positions the inner wall of the first porcelain shell 1, so that the radial relative position of the first porcelain shell 1 and the first fixing ring 2 is ensured to be fixed; the positioning claw II 31 of the second fixing ring 3 supports and positions the inner wall of the second porcelain shell 4, so that the radial relative position between the second fixing ring 3 and the second porcelain shell 4 is ensured to be fixed.
The inner holes of the first fixing ring 2 and the second fixing ring 3 are tightly matched with the outer cylindrical surface of the shielding cover 5, so that the radial relative position between the shielding cover 5 and the first fixing ring 2 and the second fixing ring 3 is ensured to be fixed; the rib-bulging annular belt 51 of the shielding cover 5 is clamped by the first fixing ring 2 and the second fixing ring 3, so that the axial relative position among the shielding cover 5, the first fixing ring 2 and the second fixing ring 3 is ensured to be fixed.
When the high-coaxiality porcelain shell assembly is assembled, the first porcelain shell 1, the first fixing ring 2, the second fixing ring 3, the second porcelain shell 4 and the shielding cover 5 are assembled together according to the relative positions, brazing solder is placed at a proper position, and then the brazing solder and other parts are assembled into a vacuum arc-extinguishing chamber to be brazed together, and when the solder melts, position movement cannot occur among all parts of the porcelain shell assembly, so that good coaxiality during assembly can be maintained, and the yield of products is improved.
The technology not disclosed in the present specification is known in the art, and therefore will not be described in detail. Of course, the foregoing is merely preferred embodiments of the present invention and is not to be construed as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and those skilled in the art will appreciate that the present invention is capable of equally varying and improving within the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a high axiality porcelain shell subassembly, includes first porcelain shell (1), first retainer plate (2), second retainer plate (3), second porcelain shell (4), shield cover (5), its characterized in that: the inner cavities of the first porcelain shell (1) and the second porcelain shell (4) are provided with shielding covers (5), a first fixing ring (2) and a second fixing ring (3) are arranged between the first porcelain shell (1) and the second porcelain shell (4), and the shielding covers (5) are respectively connected with the first porcelain shell (1) and the second porcelain shell (4) through the first fixing ring (2) and the second fixing ring (3); the first fixing ring (2) and the second fixing ring (3) are welded back to back and are respectively welded with the first porcelain shell (1) and the second porcelain shell (4), shielding covers (5) are arranged in the inner cavities of the first porcelain shell (1) and the second porcelain shell (4), and the shielding covers (5) sequentially penetrate through the first porcelain shell (1), the first fixing ring (2), the second fixing ring (3) and the second porcelain shell (4) and are welded with the first fixing ring (2) and the second fixing ring (3); a positioning claw I (21) is arranged on the wall of the first fixed ring (2); the wall of the second fixing ring (3) is provided with a positioning claw II (31).
2. A high coaxiality porcelain shell assembly according to claim 1 wherein: at least 3 positioning claws I (21) are uniformly distributed along the circumferential direction.
3. A high coaxiality porcelain shell assembly according to claim 1 wherein: at least 3 positioning claws II (31) are uniformly distributed along the circumferential direction.
4. A high coaxiality porcelain shell assembly according to claim 1 wherein: the middle part of the outer wall of the shielding cover (5) is provided with a bulge annular belt (51).
5. A high coaxiality porcelain shell assembly according to claim 1 wherein: the positioning claw I (21) of the first fixing ring (2) supports and positions the inner wall of the first porcelain shell (1); the positioning claw II (31) of the second fixing ring (3) supports and positions the inner wall of the second porcelain shell (4).
6. A high coaxiality porcelain shell assembly according to claim 1 wherein: the inner holes of the first fixing ring (2) and the second fixing ring (3) are tightly matched with the outer cylindrical surface of the shielding cover (5); the rib-bulging annular belt (51) of the shielding cover (5) is clamped by the first fixing ring (2) and the second fixing ring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011069164.1A CN112164618B (en) | 2020-09-30 | 2020-09-30 | High coaxiality porcelain shell assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011069164.1A CN112164618B (en) | 2020-09-30 | 2020-09-30 | High coaxiality porcelain shell assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112164618A CN112164618A (en) | 2021-01-01 |
| CN112164618B true CN112164618B (en) | 2023-07-18 |
Family
ID=73861711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011069164.1A Active CN112164618B (en) | 2020-09-30 | 2020-09-30 | High coaxiality porcelain shell assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112164618B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2809848Y (en) * | 2005-06-04 | 2006-08-23 | 淄博晨元电器有限公司 | Self-positioning vacuum arc extinguish chamber |
| CN201681758U (en) * | 2010-01-22 | 2010-12-22 | 陕西宝光真空电器股份有限公司 | Novel structure for fixing ceramic package and shielding cylinder of vacuum arc extinguish chamber |
| CN203596313U (en) * | 2013-08-23 | 2014-05-14 | 中国振华电子集团宇光电工有限公司 | Ceramic housing fixing structure |
| CN204792597U (en) * | 2015-07-22 | 2015-11-18 | 浙江瑞光真空电气有限公司 | Vacuum interrupter's shielding section of thick bamboo fixed structure |
| CN210040048U (en) * | 2019-07-26 | 2020-02-07 | 颐光真空电器有限公司 | Vacuum arc extinguish chamber |
-
2020
- 2020-09-30 CN CN202011069164.1A patent/CN112164618B/en active Active
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| Publication number | Publication date |
|---|---|
| CN112164618A (en) | 2021-01-01 |
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