CN211828614U - Vertical sealing brazing structure of end shield cover and sealing ring on metalized ceramic - Google Patents
Vertical sealing brazing structure of end shield cover and sealing ring on metalized ceramic Download PDFInfo
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- CN211828614U CN211828614U CN202020692531.2U CN202020692531U CN211828614U CN 211828614 U CN211828614 U CN 211828614U CN 202020692531 U CN202020692531 U CN 202020692531U CN 211828614 U CN211828614 U CN 211828614U
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- end shield
- shield cover
- sealing ring
- ceramic shell
- sealing
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Abstract
The utility model discloses a vertical sealing and brazing structure of an end shield cover and a sealing ring on metallized ceramics, which comprises a ceramic shell, an end shield cover and a sealing ring; the end surface of the ceramic shell is provided with a metallization layer, the end shield cover and the sealing ring are made of stainless steel materials, the end shield cover and the sealing ring are in braze welding sealing connection with the metallization layer of the ceramic shell, and the part of the sealing ring in braze welding sealing connection with the ceramic shell is of an annular thin-wall structure; and a plurality of supporting claws are arranged on the end shield cover at intervals along the circumferential direction and are welded with the metallization layer of the ceramic shell. The utility model discloses an end shield cover and the structure of brazing of sealing ring immediately on metallized ceramic, the sealing ring is cyclic annular thin-walled structure with the position that ceramic shell brazed the sealing, can directly weld with ceramic shell, and complete transition part need not reduce the sealing stress that welding process produced simultaneously, improves tensile strength and gas tightness.
Description
Technical Field
The utility model belongs to electricity vacuum device field especially relates to end shield cover and the structure of brazing of sealing ring immediately on the metallized ceramics.
Background
At present, when a vacuum arc-extinguishing chamber is produced, a stainless steel sealing ring and an end shield cover need to be fixed at the upper end of a ceramic shell, an oxygen-free copper transition part with the thickness of 0.5-1 mm is added between the ceramic shell and the stainless steel sealing ring to reduce the sealing stress, specifically, the end shield cover and the transition ring are fused into a whole part (oxygen-free copper material), the stainless steel sealing ring and one side of the transition ring on the end shield cover are brazed, the other side of the transition ring is brazed with a ceramic metallization layer, and the brazing solder used for brazing is silver-copper solder.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides an end shield cover and seal ring seal structure of brazing immediately on metallized ceramic, seal ring is direct to weld with ceramic shell, need not transition part completely, reduces the sealing stress that welding process produced simultaneously, improves tensile strength and gas tightness.
The vertical sealing brazing structure of the end shield cover and the sealing ring on the metallized ceramic comprises a ceramic shell, the end shield cover and the sealing ring; the end surface of the ceramic shell is provided with a metallization layer, the end shield cover and the sealing ring are made of stainless steel materials, the end shield cover and the sealing ring are in braze welding sealing connection with the metallization layer of the ceramic shell, and the part of the sealing ring in braze welding sealing connection with the ceramic shell is of an annular thin-wall structure; the end shield cover is provided with a plurality of supporting claws at intervals along the circumferential direction to be welded with the metallization layer of the ceramic shell, when the end shield cover is produced, the sealing ring is directly welded on the ceramic shell without transition parts between the ceramic shell and the sealing ring, the sealing stress is reduced and the sealing strength and the air tightness are ensured by the arrangement of the annular thin-wall structure and the toughness of the stainless steel material, in addition, the end shield cover is provided with the plurality of supporting claws at intervals along the circumferential direction to be welded with the metallization layer of the ceramic shell, compared with the prior art, the sealing stress between the end shield cover and the ceramic shell can be reduced, the sealing quality between the end shield cover and the ceramic shell is not influenced, an airtight welding line is reduced, a welding piece is saved, the cost is reduced, and meanwhile, the uniformity of electric field distribution of two end ports of.
Furthermore, the wall thickness of the annular thin-wall structure is 0.1 mm-1 mm, and the axial length is 3 mm-10 mm.
Furthermore, the end shield cover extends into the ceramic shell, and the inner end of the end shield cover is inwards rolled into an arc shape, so that the electric field distribution is favorably improved; the outer end of the end shield is provided with a radially outward flange, and the support claw is formed by cutting out a tongue piece with the width of 2-4 mm and the length of 2-5 mm from the edge of the flange and bending the tongue piece; the support claw has stable structure and convenient processing.
Furthermore, be equipped with 3 ~ 6 protruding nails or jump ring along the circumference equipartition on the perisporium of end shield cover, protruding nail or jump ring support and lean on the inner wall of ceramic shell, play the side direction to the end shield cover through setting up of protruding nail or jump ring and support the positioning action to make things convenient for the assembly of end shield cover.
Further, the sealing ring and the end shield are both made of 022Cr17Ni12Mo2(316L) stainless steel material; and the sealing ring, the end shield cover and the ceramic shell are welded by adopting silver-copper-nickel solder.
The utility model has the advantages that: the utility model discloses an end shield cover and sealing ring seal the structure of brazing immediately on metallized ceramic, the sealing ring can be directly with the welding of ceramic shell, complete without transition part and corresponding solder, reduce the sealing stress that welding process produced simultaneously, improve tensile strength and gas tightness, guaranteed vacuum interrupter's production quality to manufacturing cost has been reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. In the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of an end shield.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
As shown in fig. 1 and 2: the vertical sealing brazing structure of the end shield cover and the sealing ring on the metalized ceramics comprises a ceramic shell 6, an end shield cover 5 and a sealing ring 1; the end face of the ceramic shell 6 is provided with a metallization layer, the end shield cover 5 and the sealing ring 1 are made of stainless steel, the end shield cover 5 and the sealing ring 1 are brazed and sealed on the metallization layer of the ceramic shell 6, and the part where the sealing ring 1 and the ceramic shell 6 are brazed and sealed is an annular thin-wall structure 2; the end shield cover 5 is provided with a plurality of supporting claws 3 welded with the metallization layer of the ceramic shell 6 at intervals along the circumferential direction, the sealing ring 1 is directly welded on the ceramic shell 6 during production, transition parts between the ceramic shell 6 and the sealing ring 1 are not needed, the sealing stress is reduced through the arrangement of the annular thin-wall structure 2 and the toughness of stainless steel materials, the sealing strength and the air tightness are ensured, in addition, the end shield cover 5 is provided with a plurality of supporting claws 3 welded with the metallization layer of the ceramic shell 6 at intervals along the circumferential direction, compared with the prior art, the sealing stress between the end shield cover and the ceramic shell 6 can be reduced, the sealing quality between the end shield cover and the ceramic shell 6 is not influenced, an airtight welding line is reduced, a welding piece is saved, the cost is reduced, meanwhile, the uniformity of electric field distribution of two ports of the ceramic shell 6 is ensured, and the product quality is improved.
In this embodiment, the annular thin-walled structure 2 has a wall thickness of 0.1mm to 1mm and an axial length of 3mm to 10 mm.
In this embodiment, the end shield 5 extends into the ceramic shell 6, and the inner end of the end shield 5 is rolled inward into a circular arc shape, which is beneficial to improving electric field distribution; the outer end of the end shield cover 5 is provided with a radially outward flange, and the support claw 3 is formed by cutting a tongue piece with the width of 2 mm-4 mm and the length of 2 mm-5 mm from the edge of the flange and bending the tongue piece; the supporting claw 3 has stable structure and convenient processing.
In this embodiment, be equipped with 3 ~ 6 protruding nails or jump ring 4 along the circumference equipartition on the perisporium of end shield cover 5, protruding nail or jump ring 4 support and lean on the inner wall of ceramic shell 6, set up through protruding nail or jump ring and play the side direction to end shield cover 5 and support the positioning action to convenient assembly.
In this embodiment, the seal ring 1 and the end shield 5 are both made of 022Cr17Ni12Mo2(316L) stainless steel; the sealing ring 1, the end shield cover 5 and the ceramic shell 6 are welded by silver-copper-nickel solder; the surface of the sealing ring 1, the position of the annular thin-wall structure 2 and the end shield cover are not plated with nickel or copper, an electrolytic polishing process is adopted, the surface cleanliness and the smoothness of parts are improved, particularly, the solder for brazing the annular thin-wall structure and 316L stainless steel material with the designation 022Cr17Ni12Mo2 is silver copper nickel solder, the content ratio of nickel is controlled to be (Ni0.75 +/-0.25) properly, and thus, the liquid point and the solid point of the solder are relatively close in temperature, and the melting temperature is also lowest.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (6)
1. The utility model provides an end shield cover and seal structure of brazing immediately of ring on metallized ceramic which characterized in that: comprises a ceramic shell, an end shield cover and a sealing ring; the end surface of the ceramic shell is provided with a metallization layer, the end shield cover and the sealing ring are made of stainless steel materials, the end shield cover and the sealing ring are in braze welding sealing connection with the metallization layer of the ceramic shell, and the part of the sealing ring in braze welding sealing connection with the ceramic shell is of an annular thin-wall structure;
and a plurality of supporting claws are arranged on the end shield cover at intervals along the circumferential direction and are welded with the metallization layer of the ceramic shell.
2. The end shield and seal ring on metallized ceramic vertical seal braze joint configuration of claim 1, wherein: the wall thickness of the annular thin-wall structure is 0.1 mm-1 mm, and the axial length is 3 mm-10 mm.
3. The end shield and seal ring on metallized ceramic vertical seal braze joint configuration of claim 1, wherein: 3 ~ 4 support claws are arranged along circumference equipartition on the end shield cover.
4. The end shield and seal ring on metallized ceramic vertical seal braze joint configuration of claim 1, wherein: the end shield cover extends into the ceramic shell, and the inner end of the end shield cover is inwards rolled into an arc shape; the outer end of the end shield is provided with a radially outward flange, and the support claw is formed by cutting out a tongue piece with the width of 2 mm-4 mm and the length of 2 mm-5 mm from the edge of the flange and bending the tongue piece.
5. The end shield and seal ring on metallized ceramic vertical seal braze joint configuration of claim 1, wherein: 3-6 convex nails or snap springs are uniformly distributed on the peripheral wall of the end shield cover along the circumferential direction, and the convex nails or the snap springs are abutted against the inner wall of the ceramic shell.
6. The end shield and seal ring on metallized ceramic vertical seal braze joint structure of any of claims 1 to 5, wherein: the sealing ring and the end shield are both made of 316 stainless steel materials with the trade name of 022Cr17Ni12Mo 2; and the sealing ring, the end shield cover and the ceramic shell are welded by adopting silver-copper-nickel solder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020692531.2U CN211828614U (en) | 2020-04-29 | 2020-04-29 | Vertical sealing brazing structure of end shield cover and sealing ring on metalized ceramic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020692531.2U CN211828614U (en) | 2020-04-29 | 2020-04-29 | Vertical sealing brazing structure of end shield cover and sealing ring on metalized ceramic |
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| CN211828614U true CN211828614U (en) | 2020-10-30 |
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| CN202020692531.2U Active CN211828614U (en) | 2020-04-29 | 2020-04-29 | Vertical sealing brazing structure of end shield cover and sealing ring on metalized ceramic |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116683225A (en) * | 2023-07-04 | 2023-09-01 | 湖南湘瓷科艺有限公司 | Ceramic sealing high-voltage-resistant electric connector and sealing process thereof |
-
2020
- 2020-04-29 CN CN202020692531.2U patent/CN211828614U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116683225A (en) * | 2023-07-04 | 2023-09-01 | 湖南湘瓷科艺有限公司 | Ceramic sealing high-voltage-resistant electric connector and sealing process thereof |
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