CN201060792Y - Vacuum arc-extinguishing chamber for low carbon stainless structure - Google Patents
Vacuum arc-extinguishing chamber for low carbon stainless structure Download PDFInfo
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- CN201060792Y CN201060792Y CNU2007201093390U CN200720109339U CN201060792Y CN 201060792 Y CN201060792 Y CN 201060792Y CN U2007201093390 U CNU2007201093390 U CN U2007201093390U CN 200720109339 U CN200720109339 U CN 200720109339U CN 201060792 Y CN201060792 Y CN 201060792Y
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- bellows
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Abstract
The utility model relates to a vacuum interrupter with low-carbon stainless steel structure, comprising a ceramic housing as well as a static cover plate, a shielding tube fixing ring, a shielding tube, a bellows shielding hood, a bellows, a moving cover plate and a guide sleeve fixing ring formed by low-carbon stainless steel structure; wherein, the shielding tube is fixed on a step on the inner wall of the ceramic housing via the shielding tube; an end face with maximum diameter of the static cover plate is sealed with the ceramic housing via a lower sealing ring; the bellows shielding hood is welded with one end of the bellows via a moving conductive rod and a transition ring, while the other end of the bellows is welded with the moving cover plate and the guide sleeve fixing ring; an end face with maximum diameter of the moving cover plate is sealed with the ceramic housing via an upper sealing ring; the guide sleeve is positioned through the moving conductive rod and the guide sleeve fixing ring. The utility model has the advantages of sealing, equalizing and positioning.
Description
Technical field
The utility model relates to the technical field of vacuum interrupter, relates in particular to the vacuum interrupter of low carbon stainless steel structure.Vacuum interrupter is the former device of the core of vacuum switch, the main performance of its leading indicator decision vacuum switch.
Background technology
Vacuum interrupter is the core components and parts of vacuum switch, and it has determined the main performance of vacuum switch basically.Whether the technical indicator of vacuum interrupter is advanced, and can the quality of product be guaranteed, and the performance of the project organization of product, manufacturing process, structural material is the three elements of decisive factor.Vacuum interrupter to the requirement of structural material except that considering factors such as its engineering properties, electromagnetic performance, processing difficulty or ease, national resources, price, the vacuum performance of also essential consideration material is air-tightness, outgassing behaviour, pumping property and the evaporation degree in a vacuum of material both, welding performance is brazing property, sealing property and the argon arc welding performance of metal both, heat resistance etc.Stainless steel is the desirable primary structure material of vacuum interrupter, major part such as bellows, and various radomes, dynamic and static end casing, fairlead retainer ring etc. all adopts stainless steel.
Since first vacuum interrupter of China comes out, stainless steel is generally all selected 1Cr18Ni9Ti, oversaturated carbon was formed on the crystal boundary with the carbide of chromium and separates out when 1Cr18Ni9Ti was heated to 550～800 ℃, the carbide of chromium is easy to and acid reaction on crystal boundary, cause spot corrosion and intercrystalline corrosion, and the carbide of chromium is separated out the temperature that temperature has just in time comprised vacuum interrupter soldering and welding, thereby the temperature of vacuum interrupter soldering and welding will cause the carbide of 1Cr18Ni9Ti stainless steel chromium to separate out, be easy to be directed at stainless steel spot corrosion in use and intercrystalline corrosion, causing vacuum interrupter to leak gas slowly influences the vacuum life of vacuum interrupter.
Summary of the invention
Technical problem to be solved in the utility model is at above-mentioned prior art present situation, and provides a kind of and possess sealing-in simultaneously, all presses and the vacuum interrupter of the low carbon stainless steel structure of positioning function.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: the vacuum interrupter of low carbon stainless steel structure comprises porcelain shell and the quiet cover plate that is made of the low carbon stainless steel structure, shielding cylinder retainer ring, shielding cylinder, bellows shield cover, bellows, moving cover plate, fairlead retainer ring; Step in shielding cylinder wherein and the porcelain shell inwall is by shielding cylinder retainer ring positioning and fixing; The maximum gauge end face and the porcelain shell of quiet cover plate are sealed with down sealing ring; The bellows shield cover is by the end welding of moving conductive rod and transition rings and bellows, and the other end of bellows cooperates welding with moving cover plate and fairlead retainer ring, and the maximum gauge end face of moving cover plate and porcelain shell are sealed with the described sealing ring of going up; Fairlead is by moving conductive rod and fairlead retainer ring location.
The technical measures of optimizing also comprise: sealing ring and last sealing ring all are shaped on S type ring body; S type ring body is shaped on and can be inserted in the outer crimping of welding with quiet cover plate and moving cover plate mutually.
Compared with prior art, the step in the utility model shielding cylinder and the porcelain shell inwall is by shielding cylinder retainer ring positioning and fixing; The maximum gauge end face and the porcelain shell of quiet cover plate are sealed with down sealing ring; The bellows shield cover is by the end welding of moving conductive rod and transition rings and bellows, and the other end of bellows cooperates welding with moving cover plate and fairlead retainer ring, and the maximum gauge end face of moving cover plate and porcelain shell are sealed with the described sealing ring of going up; Fairlead is by moving conductive rod and fairlead retainer ring location.Adopt the vacuum interrupter properties of product of mild steel structure more reliable and more stable, can exempt intercrystalline corrosion and spot corrosion, reduce the possibility of gas leakage, the useful life and the vacuum storage life of having improved vacuum interrupter, improve the rate of finished products of product, can bring considerable economic and social benefit.It also is that the important stainless steel structure of electrovacuum electrical apparatus industry has obtained important breakthrough that vacuum interrupter adopts the mild steel structure.
Description of drawings
Fig. 1 is the assembling partial schematic sectional view of the utility model embodiment.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Structure of the present utility model is seen shown in Figure 1.The vacuum interrupter of low carbon stainless steel structure comprises porcelain shell 3 and the quiet cover plate 1 that is made of the low carbon stainless steel structure, shielding cylinder retainer ring 4, shielding cylinder 5, bellows shield cover 6, bellows 8, moving cover plate 9, fairlead retainer ring 10; Step in shielding cylinder 5 and porcelain shell 3 inwalls is by shielding cylinder retainer ring 4 positioning and fixing; The maximum gauge end face and the porcelain shell 3 of quiet cover plate 1 are sealed with down sealing ring 21; Described bellows shield cover 6 is by the end welding of moving conductive rod 11 and transition rings 7 and bellows 8, the other end of bellows 8 cooperates welding with moving cover plate 9 and fairlead retainer ring 10, and the maximum gauge end face of moving cover plate 9 and porcelain shell 3 are sealed with the described sealing ring 22 of going up; Fairlead 12 is by moving conductive rod 11 and fairlead retainer ring 10 location.Sealing ring 21 and last sealing ring 22 all are shaped on S type ring body; Described S type ring body is shaped on and can be inserted in the outer crimping of welding mutually with quiet cover plate 1 and moving cover plate 9.
The vacuum interrupter of the formation of the utility model low carbon stainless steel 0Cr18Ni9 (304), 00Cr18Ni10 (304L), 00Cr17Ni14Mo low carbon stainless steel structures such as (316L), carbon containing is lower than 0.03%, at this moment the content of carbon is near carbon solubility in austenite, thereby heating can not cause that the carbide of chromium separates out, thereby can exempt intercrystalline corrosion and spot corrosion, significantly reduce the possibility of the gas leakage of vacuum interrupter.Leak rate drops to 3/10000ths by original 3/1000ths.
Adopt the vacuum interrupter properties of product of mild steel structure more reliable and more stable, can exempt intercrystalline corrosion and spot corrosion, reduce the possibility of gas leakage, the useful life and the vacuum storage life of having improved vacuum interrupter, improve the rate of finished products of product, can bring considerable economic and social benefit.It also is that the important foundation structure of electrovacuum electrical apparatus industry has obtained important breakthrough that vacuum interrupter adopts the mild steel structure.
Though the utility model illustrates and describes by the reference preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation on form and the details.
Claims (2)
1. the vacuum interrupter of low carbon stainless steel structure comprises porcelain shell (3) and the quiet cover plate (1) that is made of the low carbon stainless steel structure, shielding cylinder retainer ring (4), shielding cylinder (5), bellows shield cover (6), bellows (8), moving cover plate (9), fairlead retainer ring (10); It is characterized in that: the step in described shielding cylinder (5) and porcelain shell (3) inwall is by shielding cylinder retainer ring (4) positioning and fixing; The maximum gauge end face of quiet cover plate (1) and porcelain shell (3) are sealed with down sealing ring (21); Described bellows shield cover (6) is by the end welding of moving conductive rod (11) and transition rings (7) and bellows (8), the other end of bellows (8) cooperates welding with moving cover plate (9) and fairlead retainer ring (10), and the maximum gauge end face of moving cover plate (9) and porcelain shell (3) are sealed with the described sealing ring (22) of going up; Fairlead (12) is by moving conductive rod (11) and fairlead retainer ring (10) location.
2. the vacuum interrupter of low carbon stainless steel structure according to claim 1 is characterized in that: described sealing ring (21) down and last sealing ring (22) all are shaped on S type ring body; Described S type ring body is shaped on and can be inserted in the outer crimping of welding mutually with quiet cover plate (1) and moving cover plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201093390U CN201060792Y (en) | 2007-05-11 | 2007-05-11 | Vacuum arc-extinguishing chamber for low carbon stainless structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201093390U CN201060792Y (en) | 2007-05-11 | 2007-05-11 | Vacuum arc-extinguishing chamber for low carbon stainless structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201060792Y true CN201060792Y (en) | 2008-05-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201093390U Expired - Fee Related CN201060792Y (en) | 2007-05-11 | 2007-05-11 | Vacuum arc-extinguishing chamber for low carbon stainless structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201060792Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819904A (en) * | 2010-04-21 | 2010-09-01 | 山东晨鸿电气有限公司 | Three-station vacuum arc extinguish chamber for isolated grounding |
| CN102820151A (en) * | 2012-08-16 | 2012-12-12 | 岑银富 | Stress-resisting cover plate for vacuum arc extinguishing chamber |
-
2007
- 2007-05-11 CN CNU2007201093390U patent/CN201060792Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819904A (en) * | 2010-04-21 | 2010-09-01 | 山东晨鸿电气有限公司 | Three-station vacuum arc extinguish chamber for isolated grounding |
| CN102820151A (en) * | 2012-08-16 | 2012-12-12 | 岑银富 | Stress-resisting cover plate for vacuum arc extinguishing chamber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080514 Termination date: 20130511 |