CN112164619A - Fixing structure of shielding cylinder and ceramic shell and vacuum arc-extinguishing chamber - Google Patents
Fixing structure of shielding cylinder and ceramic shell and vacuum arc-extinguishing chamber Download PDFInfo
- Publication number
- CN112164619A CN112164619A CN202011205658.8A CN202011205658A CN112164619A CN 112164619 A CN112164619 A CN 112164619A CN 202011205658 A CN202011205658 A CN 202011205658A CN 112164619 A CN112164619 A CN 112164619A
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- China
- Prior art keywords
- shielding cylinder
- fixing structure
- middle hole
- positioning
- groove
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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
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
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- Insulators (AREA)
Abstract
The invention belongs to the technical field of vacuum arc extinguish chambers, and discloses a fixing structure of a shielding cylinder and a ceramic shell and a vacuum arc extinguish chamber, wherein the fixing structure of the shielding cylinder and the ceramic shell comprises a ceramic shell, a plurality of positioning pieces and a shielding cylinder, the ceramic shell is provided with a middle hole, and the inner wall of the middle hole is provided with a groove; the positioning pieces are inserted into the grooves in an inserting mode, the side walls of the grooves can limit the axial positions of the positioning pieces along the middle hole, and the positioning pieces are arranged along the circumferential direction of the middle hole and are surrounded into mounting holes; the shielding cylinder penetrates through the mounting hole and is provided with a limiting surface, and the limiting surface is abutted to the positioning piece along the axial direction of the middle hole. According to the fixing structure of the shielding cylinder and the ceramic shell, the positioning piece is inserted into the groove, the shielding cylinder penetrates through the mounting hole and is attached to the inner wall of the positioning piece, the limiting surface of the shielding cylinder is abutted against the positioning piece to fix the position of the shielding cylinder relative to the ceramic shell, so that the electric field in the arc extinguish chamber is uniformly distributed, and the fixing structure is simple.
Description
Technical Field
The invention relates to the technical field of vacuum arc-extinguishing chambers, in particular to a fixing structure of a shielding cylinder and a ceramic shell and a vacuum arc-extinguishing chamber.
Background
The vacuum arc-extinguishing chamber is a core component of the power switch, and can rapidly extinguish arc and restrain current after a circuit is cut off by the insulation of vacuum in a tube. At present, a fixing structure of a ceramic shell and a shielding cylinder of a vacuum arc-extinguishing chamber is mainly of a spinning and welding type, a welding type shielding cylinder fixing structure needs to increase a metal layer for welding on an inner stage of the ceramic shell so as to weld the ceramic shell and the shielding cylinder, and the requirement on the dimensional precision of the inner stage of the ceramic shell is high and the processing cost is high; one end of the spinning type shielding cylinder fixing structure is a spinning end, so that the two ports of the shielding cylinder cannot be completely symmetrical, and the electric fields of the moving end and the static end in the arc extinguish chamber pipe are not uniformly distributed, and the performance of the arc extinguish chamber is influenced.
Disclosure of Invention
The invention aims to provide a fixing structure of a shielding cylinder and a ceramic shell and a vacuum arc extinguish chamber, and aims to solve the problem of uneven electric field distribution of a moving end and a static end in the arc extinguish chamber tube.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fixing structure of a shielding cylinder and a porcelain shell comprises:
the ceramic shell is provided with a middle hole, and the inner wall of the middle hole is provided with a groove;
the positioning pieces are inserted into the grooves in an inserted mode, the side walls of the grooves can limit the axial positions of the positioning pieces along the middle hole, and the positioning pieces are arranged along the circumferential direction of the middle hole and are surrounded to form mounting holes;
the shielding cylinder penetrates through the mounting hole, a limiting surface is arranged on the shielding cylinder, and the limiting surface is abutted to the positioning piece along the axial direction of the middle hole.
Preferably, the groove is an annular groove, and the positioning pieces are all inserted into the groove and are uniformly distributed along the circumferential direction of the groove.
Preferably, the groove comprises a plurality of arc-shaped grooves, and the positioning pieces are correspondingly inserted into the arc-shaped grooves one by one.
Preferably, the positioning piece is arc-shaped, and the cross section of the positioning piece is L-shaped.
Preferably, the shielding cylinders are arranged at intervals in the middle hole of the porcelain shell.
Preferably, the length of the shielding cylinder is smaller than that of the porcelain shell, and two ends of the shielding cylinder are located in the middle hole of the porcelain shell.
Preferably, the peripheral surface of the shielding cylinder is provided with an annular bulge, and the limiting surface is located at one end of the annular bulge and abutted against the positioning piece.
Preferably, the limiting surface and the positioning piece are welded and fixed.
A vacuum arc-extinguishing chamber comprises the fixing structure of the shielding cylinder and the ceramic shell.
The invention has the beneficial effects that:
the invention provides a fixing structure of a shielding cylinder and a ceramic shell and a vacuum arc extinguish chamber, wherein the fixing structure of the shielding cylinder and the ceramic shell comprises the ceramic shell, a plurality of positioning pieces and the shielding cylinder, the ceramic shell is provided with a middle hole, and the inner wall of the middle hole is provided with a groove; the positioning pieces are inserted into the grooves in an inserting mode, the side walls of the grooves can limit the axial positions of the positioning pieces along the middle hole, and the positioning pieces are arranged along the circumferential direction of the middle hole and are surrounded into mounting holes; the shielding cylinder penetrates through the mounting hole and is provided with a limiting surface, and the limiting surface is abutted to the positioning piece along the axial direction of the middle hole. According to the fixing structure of the shielding cylinder and the ceramic shell, the groove is formed in the inner wall of the ceramic shell, the positioning piece is inserted into the groove, the position of the positioning piece can be limited by the groove along the axial direction of the middle hole, the shielding cylinder penetrates through the mounting hole, the limiting surface on the shielding cylinder can be abutted against the positioning piece, the position of the shielding cylinder relative to the ceramic shell is fixed, and therefore the uniform distribution of an electric field in the arc extinguish chamber tube is achieved, and the structure is simple.
Drawings
Fig. 1 is a sectional view of a fixing structure of a shield cylinder and a porcelain shell according to an embodiment of the present invention;
fig. 2 is an exploded view of a fixing structure of a shielding cylinder and a porcelain shell according to an embodiment of the present invention.
In the figure:
1. a porcelain shell; 11. a middle hole; 12. a groove;
2. a positioning member;
3. a shielding cylinder; 31. a limiting surface.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The invention provides a fixing structure of a shielding cylinder and a ceramic shell and a vacuum arc-extinguishing chamber, as shown in figures 1 and 2, the fixing structure of the shielding cylinder and the ceramic shell comprises a ceramic shell 1, a plurality of positioning pieces 2 and a shielding cylinder 3, wherein the ceramic shell 1 is provided with a middle hole 11, and the inner wall of the middle hole 11 is provided with a groove 12; the positioning pieces 2 are inserted into the grooves 12, the side walls of the grooves 12 can limit the axial positions of the positioning pieces 2 along the middle hole 11, and the positioning pieces 2 are arranged along the circumferential direction of the middle hole 11 and are surrounded to form mounting holes; the shielding cylinder 3 penetrates through the mounting hole, the shielding cylinder 3 is provided with a limiting surface 31, and the limiting surface 31 is abutted to the positioning piece 2 along the axial direction of the middle hole 11. According to the fixing structure of the shielding cylinder 3 and the ceramic shell 1, the groove 12 is formed in the inner wall of the ceramic shell 1, the positioning piece 2 is inserted into the groove 12, the position of the positioning piece 2 can be limited by the groove 12 along the axial direction of the middle hole 11, the position limiting face 31 on the shielding cylinder 3 can be abutted to the positioning piece 2 by penetrating the shielding cylinder 3 into the mounting hole, so that the position of the shielding cylinder 3 relative to the ceramic shell 1 is fixed, the uniform distribution of an electric field in the arc extinguish chamber is realized, and the structure is simple.
Optionally, as shown in fig. 1 and fig. 2, the groove 12 is an annular groove, and the plurality of positioning members 2 are inserted into the groove 12 and are uniformly distributed along the circumferential direction of the groove 12. The groove 12 is arranged to be an annular groove, so that a plurality of positioning pieces 2 can be conveniently inserted into the groove 12, and meanwhile, the positions of the positioning pieces 2 inserted into the groove 12 can be conveniently adjusted, so that the positioning pieces 2 are uniformly distributed along the circumferential direction of the groove 12; the positioning pieces 2 are uniformly distributed along the circumferential direction of the groove 12, so that the axial stress of the shielding cylinder 3 abutting against the positioning pieces 2 along the middle hole 11 can be ensured to be uniform, and meanwhile, the position of the shielding cylinder 3 relative to the porcelain shell 1 can be conveniently fixed. Preferably, the number of the positioning members 2 is three, the three positioning members 2 can be sequentially inserted into the groove 12, and the positions of the three positioning members 2 in the groove 12 are adjusted, so that the three positioning members 2 are uniformly distributed. In other embodiments, the groove 12 is a plurality of arc-shaped grooves, the arc-shaped grooves are uniformly distributed along the circumferential direction of the middle hole 11, and the positioning members 2 are correspondingly inserted into the arc-shaped grooves one by one. Through setting up a plurality of arc recesses at the inner wall of porcelain shell 1, a plurality of arc recesses along the circumferencial direction evenly distributed of well in the middle 11, peg graft 2 one-to-one with the setting element in the arc recess, can fix the relative position of a plurality of setting elements 2 and porcelain shell 1, also can realize a plurality of setting elements 2 simultaneously along the circumferencial direction evenly distributed of well in the middle 11. Preferably, the number of the arc-shaped grooves is three, the number of the corresponding positioning pieces 2 is three, the three arc-shaped grooves are uniformly distributed along the circumferential direction of the middle hole 11, and the three positioning pieces 2 are correspondingly inserted into the three arc-shaped grooves one to one.
Alternatively, as shown in fig. 1 and 2, the positioning member 2 is arc-shaped, and the cross-section of the positioning member 2 is L-shaped. The positioning piece 2 is arranged into an arc shape, so that the positioning piece 2 can be conveniently inserted into the annular groove or the arc-shaped groove; set the cross-section through with setting element 2 to the L type, can guarantee that shielding section of thick bamboo 3 is along the radial and the inner wall laminating of mounting hole of porcelain shell 1, can increase the laminating area of shielding section of thick bamboo 3 and 2 inner walls of setting element, can guarantee simultaneously that shielding section of thick bamboo 3 is along the axial and the 2 butts of setting element of porcelain shell 1, shielding section of thick bamboo 3's spacing face 31 and 2 butts of setting element promptly to can fix shielding section of thick bamboo 3 along the radial and axial position of porcelain shell 1.
Alternatively, as shown in fig. 1 and 2, the shielding cylinders 3 are provided at intervals in the middle hole 11 of the porcelain shell 1. By arranging the shielding cylinders 3 at intervals in the middle holes 11 of the porcelain shell 1, the shielding cylinders 3 can be conveniently assembled in the middle holes 11 of the porcelain shell 1, so that the limiting surfaces 31 of the shielding cylinders 3 abut against the positioning pieces 2, and the shielding cylinders 3 can be effectively fixed in the middle holes 11 of the porcelain shell 1.
Alternatively, as shown in fig. 1, the length of the shielding cylinder 3 is smaller than that of the porcelain shell 1, and both ends of the shielding cylinder 3 are located in the middle hole 11 of the porcelain shell 1. The length of the shielding cylinder 3 is smaller than that of the porcelain shell 1, and the two ends of the shielding cylinder 3 are positioned in the middle hole 11 of the porcelain shell 1, so that the shielding cylinder 3 can be ensured to be fixed in the middle hole 11 of the porcelain shell 1, and meanwhile, the two ports of the shielding cylinder 3 are completely symmetrical, and the electric field can be ensured to be uniformly distributed.
Optionally, as shown in fig. 2, an annular protrusion is disposed on the outer circumferential surface of the shielding cylinder 3, and the limiting surface 31 is located at one end of the annular protrusion and abuts against the positioning member 2. Through set up annular protrusion in the peripheral face of a shield section of thick bamboo 3, can form the spacing face 31 with a shield section of thick bamboo 3 butt, the spacing face 31 and the setting element 2 butt of a shield section of thick bamboo 3 to the realization is fixed along the axial direction's of porcelain shell 1 position to a shield section of thick bamboo 3.
Alternatively, as shown in fig. 2, the limiting surface 31 is welded and fixed to the positioning member 2. By welding the limiting surface 31 and the positioning member 2, it can be understood that the positioning member 2 and the shielding cylinder 3 are welded and fixed, so that the position of the shielding cylinder 3 fixed at a good position can be prevented from changing, and the distribution of an electric field can be prevented from being influenced.
The embodiment also provides a vacuum arc extinguish chamber which comprises the fixing structure of the shielding cylinder and the porcelain shell.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. The utility model provides a fixed knot of a shield section of thick bamboo and porcelain shell constructs which characterized in that includes:
the porcelain shell (1) is provided with a middle hole (11), and the inner wall of the middle hole (11) is provided with a groove (12);
the positioning pieces (2) are inserted into the grooves (12), the side walls of the grooves (12) can limit the axial positions of the positioning pieces (2) along the middle hole (11), and the positioning pieces (2) are arranged along the circumferential direction of the middle hole (11) and are surrounded to form mounting holes;
the shielding cylinder (3) penetrates through the mounting hole, a limiting face (31) is arranged on the shielding cylinder (3), and the limiting face (31) is abutted to the positioning piece (2) in the axial direction of the middle hole (11).
2. The fixing structure of the shielding cylinder and the porcelain shell according to claim 1, wherein the groove (12) is an annular groove, and a plurality of positioning members (2) are inserted into the groove (12) and uniformly distributed along the circumferential direction of the groove (12).
3. The fixing structure of the shielding cylinder and the porcelain shell according to claim 1, wherein the groove (12) comprises a plurality of arc-shaped grooves, the arc-shaped grooves are uniformly distributed along the circumferential direction of the middle hole (11), and a plurality of positioning members (2) are correspondingly inserted into the arc-shaped grooves one by one.
4. The fixing structure of the shielding cylinder and the porcelain shell according to any one of claims 2 or 3, wherein the positioning member (2) is arc-shaped, and the cross section of the positioning member (2) is L-shaped.
5. The fixing structure of the shielding cylinder and the porcelain shell according to claim 1, wherein the shielding cylinder (3) is provided at intervals in the middle hole (11) of the porcelain shell (1).
6. The fixing structure of the shielding cylinder and the porcelain shell according to claim 5, wherein the length of the shielding cylinder (3) is less than the length of the porcelain shell (1), and both ends of the shielding cylinder (3) are located in the middle hole (11) of the porcelain shell (1).
7. The fixing structure of the shielding cylinder and the porcelain shell according to claim 1, wherein an annular protrusion is provided on the outer circumferential surface of the shielding cylinder (3), and the limiting surface (31) is located at one end of the annular protrusion and abuts against the positioning member (2).
8. The fixing structure of the shielding cylinder and the porcelain shell according to claim 7, wherein the limiting surface (31) is welded and fixed with the positioning member (2).
9. A vacuum interrupter, characterized by comprising a fixing structure of the shielding cylinder of any one of claims 1 to 8 and a porcelain case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011205658.8A CN112164619A (en) | 2020-11-02 | 2020-11-02 | Fixing structure of shielding cylinder and ceramic shell and vacuum arc-extinguishing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011205658.8A CN112164619A (en) | 2020-11-02 | 2020-11-02 | Fixing structure of shielding cylinder and ceramic shell and vacuum arc-extinguishing chamber |
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| Publication Number | Publication Date |
|---|---|
| CN112164619A true CN112164619A (en) | 2021-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011205658.8A Pending CN112164619A (en) | 2020-11-02 | 2020-11-02 | Fixing structure of shielding cylinder and ceramic shell and vacuum arc-extinguishing chamber |
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| CN (1) | CN112164619A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0200465A2 (en) * | 1985-04-24 | 1986-11-05 | Vacuum Interrupters Limited | Vacuum devices |
| CN2414508Y (en) * | 2000-04-04 | 2001-01-10 | 陕西宝光真空电器股份有限公司 | Glass vacuum arc-extinguishing chamber with outer isolation material sleeving |
| US20100032412A1 (en) * | 2008-08-11 | 2010-02-11 | Trondsen William J | Vacuum envelope including self-aligning end shield, vacuum interrupter, vacuum circuit interrupter and method including the same |
| 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 |
| CN208208650U (en) * | 2018-05-29 | 2018-12-07 | 金华菁英科技服务有限公司 | A kind of self-positioning loose mail envelope vacuum pumping arc-chutes |
| CN109273315A (en) * | 2018-10-23 | 2019-01-25 | 陕西宝光真空电器股份有限公司 | A kind of fixing means and vacuum interrupter of shielding cylinder and porcelain shell |
| CN208548315U (en) * | 2018-08-28 | 2019-02-26 | 宁波云振真空电器有限公司 | A kind of vacuum interrupter and breaker |
| CN208922983U (en) * | 2018-09-27 | 2019-05-31 | 杭州旭虹真空电器有限公司 | It is a kind of convenient for seasoned vacuum interrupter |
| CN213340197U (en) * | 2020-11-02 | 2021-06-01 | 陕西宝光真空电器股份有限公司 | Fixing structure of shielding cylinder and ceramic shell and vacuum arc-extinguishing chamber |
-
2020
- 2020-11-02 CN CN202011205658.8A patent/CN112164619A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0200465A2 (en) * | 1985-04-24 | 1986-11-05 | Vacuum Interrupters Limited | Vacuum devices |
| CN2414508Y (en) * | 2000-04-04 | 2001-01-10 | 陕西宝光真空电器股份有限公司 | Glass vacuum arc-extinguishing chamber with outer isolation material sleeving |
| US20100032412A1 (en) * | 2008-08-11 | 2010-02-11 | Trondsen William J | Vacuum envelope including self-aligning end shield, vacuum interrupter, vacuum circuit interrupter and method including the same |
| 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 |
| CN208208650U (en) * | 2018-05-29 | 2018-12-07 | 金华菁英科技服务有限公司 | A kind of self-positioning loose mail envelope vacuum pumping arc-chutes |
| CN208548315U (en) * | 2018-08-28 | 2019-02-26 | 宁波云振真空电器有限公司 | A kind of vacuum interrupter and breaker |
| CN208922983U (en) * | 2018-09-27 | 2019-05-31 | 杭州旭虹真空电器有限公司 | It is a kind of convenient for seasoned vacuum interrupter |
| CN109273315A (en) * | 2018-10-23 | 2019-01-25 | 陕西宝光真空电器股份有限公司 | A kind of fixing means and vacuum interrupter of shielding cylinder and porcelain shell |
| CN213340197U (en) * | 2020-11-02 | 2021-06-01 | 陕西宝光真空电器股份有限公司 | Fixing structure of shielding cylinder and ceramic shell and vacuum arc-extinguishing chamber |
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Application publication date: 20210101 |