CN2570965Y - Low-voltage vacuum quenching chamber - Google Patents
Low-voltage vacuum quenching chamber Download PDFInfo
- Publication number
- CN2570965Y CN2570965Y CN 02276492 CN02276492U CN2570965Y CN 2570965 Y CN2570965 Y CN 2570965Y CN 02276492 CN02276492 CN 02276492 CN 02276492 U CN02276492 U CN 02276492U CN 2570965 Y CN2570965 Y CN 2570965Y
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- Prior art keywords
- ring
- bellows
- moving
- conductive rod
- voltage vacuum
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Abstract
The utility model relates to a low voltage vacuum arc extinguishing chamber. The utility model relates to electric switches for turning on and turning off short-circuit currents in power supplying elements and power distributing elements. The utility model aims to solves the problems existing in the prior art that the manufacturing cost is high and the production period is long. The utility model comprises a housing (1), a guide sleeve fixed ring (6), an electric conducting ring (8), a moving contact head assembly (9) and a static contact head assembly (17) which are in a breaking and closing way in the housing, the guide sleeve fixed ring (6) and the electric conducting ring (8) are connected to the both ends of the housing (1) respectively, the moving contact head assembly comprises a moving conductive rod (10) which is connected to the moving contact head (11), a corrugated pipe (12) which is sheathed outside the moving conductive rod, a front ring (13) of the corrugated pipe, a protective cover (15) of the moving contact head assembly and a moving stop plate (16) which is connected to the moving conductive rod in a sheath connection way, the static contact head assembly comprises a static conductive rod (18) which is connected to a static contact head (19) and a static stop plate (20) which is connected to the static conductive rod in a sheath connection way, the ring cross section of the front ring of the corrugated pipe forms a U shape, a back ring (14) of the corrugated pipe is connected to the back end of the corrugated pipe, and the back ring of the corrugated pipe is connected to a fixed ring of a guide sleeve. The utility model is suitable for being assembled into a low voltage vacuum circuit breaker, particularly for turning on and turning off short circuit currents.
Description
Technical field
The utility model relates to for the low-voltage vacuum arc control device that cut-off short circuit current in the electric switch, particularly low-voltage vacuum circuit breaker in the distribution device.Be used to control and protect the safety of electrical network and equipment.
Background technology
Existing low-voltage vacuum arc control device, referring to Fig. 2, by cut-offfing closed moving contact component and the fixed contact assembly that cooperates, the shell of encapsulation dynamic static joint assembly constitutes.Shell 1 is made up of external shield 1 and porcelain shell 4, and the two ends of shell connect fairlead 5 and fairlead retainer ring 6 and conducting ring 8 respectively.Moving contact component 9 has the moving conductive rod 10 that runs through fairlead; moving contact 11 that is connected with the moving conductive rod front end and moving baffle plate 16; be sleeved on the outer bellows 12 of moving conductive rod; ring 13 joins with moving baffle plate before the bellows that the bellows front end connects; the bellows rear end is connected with shell, has to be sleeved on the protective cover 15 that bellows is outer and be connected with moving baffle plate.Fixed contact assembly 17 has the static conductive rod 18 that runs through conducting ring, fixed contact 19 that is connected with the static conductive rod front end and quiet baffle plate 20.
This low-voltage vacuum arc control device adopt the ladder scolder through twice each assembly welding to be made; welding for the first time is with solid-state temperature and higher palladium parent metal such as the palladium-silver spelter solder of liquidus temperature; to send into the envelope grate furnace after bellows, ripple pipe ring, protective cover, fairlead retainer ring, the external shield assembly; last 18 hours heating solderings and become parts; welding for the second time is that the parts that will be welded into for the first time assemble with all the other parts again; adopt solid-state temperature and the lower silver-copper brazing alloy of liquidus temperature; send into the envelope grate furnace again and last 18 hours and vacuumize soldering, make the low-voltage vacuum arc control device.Reason owing to the design of part of low-voltage vacuum arc control device, must be with twice soldering of experience, therefore, weld for the first time the solid-state temperature and the liquidus temperature of used scolder, must be than the solid-state temperature and the liquidus temperature height that weld for the second time used scolder, otherwise might be will be when the parts that are welded into be for the first time sent into row's banking and are carried out welding the second time, the position of welding is destroyed for the first time, make the welding position of low-voltage vacuum arc control device not firm, the phenomenon that the bellows weld leaks gas often occurs, influence the performance of vacuum interrupter.Therefore the assembling of this low-voltage vacuum arc control device must be adopted the ladder scolder, and palladium parent metal such as palladium-silver spelter solder are adopted in welding for the first time, and silver-copper brazing alloy is adopted in welding for the second time.Owing to the cost height of palladium parent metal, be 10 times of normally used silver-copper brazing alloy price.Thereby the problem such as manufacturing cost height, production cycle length, complex process that causes the low-voltage vacuum arc control device.
The utility model content
In view of above-mentioned, the purpose of this utility model is to provide a kind of low cost of manufacture, production cycle short low-voltage vacuum arc control device.
The utility model is on the basis of existing low-voltage vacuum arc control device, and ring is realized its purpose after adopting the preceding ring of bellows of U-loop section and increasing bellows.
Low-voltage vacuum arc control device of the present utility model (referring to accompanying drawing); the shell (1) that comprises tubular; fairlead retainer ring (6) that the two ends of shell connect respectively and conducting ring (8); fairlead in the fairlead retainer ring (5); be in the shell and cut-off closed moving contact component (9) and the fixed contact assembly (17) that cooperates; above-mentioned moving contact component has and runs through the moving conductive rod (10) that fairlead and front end are connected with moving contact (11); be sleeved on the outer bellows (12) of moving conductive rod; be contained in the protective cover (15) of the outer tubular of bellows with ring (13) adapter sleeve before the bellows that the bellows front end is connected; the moving baffle plate (16) that before moving contact and bellows, interlocks with moving conductive rod between the ring; above-mentioned fixed contact assembly has and runs through the static conductive rod (18) that conducting ring and front end are connected with fixed contact (19); be positioned at the quiet baffle plate (20) of the annular that fixed contact rear and static conductive rod interlock; the ring section of ring takes the shape of the letter U before the above-mentioned bellows; (14) are encircled after connecting bellows in the rear end of bellows, and ring is connected with the fairlead retainer ring behind the bellows.
Above-mentioned protective cover is the ladder tubular, and the outer peripheral face of ring (13) is connected with the inner peripheral surface of protective cover (15) miner diameter end before the bellows, and the inner peripheral surface of ring is connected with moving conductive rod (10) before the bellows.
The medial extremity of above-mentioned fairlead retainer ring (6) has in-flanges (7), and the outer peripheral face of ring (14) is connected behind the inner peripheral surface of in-flanges and the bellows.
Above-mentioned shell (1) has external shield (2) and bezel ring, (3), and the porcelain shell (4) that two ends are connected with bezel ring, with external shield respectively, porcelain valve jacket are the bitubular shape that front end connects and is nested with outside bellows (12).
Use use of the present utility model identical with existing low-voltage vacuum arc control device.
The utility model is compared with the low-voltage vacuum arc control device that oneself has, and connects protective cover owing to encircle before the bellows that the utility model adopts the ring section to take the shape of the letter U, and the rear end of bellows is encircled after connecting bellows, and ring connects the structure of fairlead retainer ring behind the bellows.Structure of the present utility model can adopt common argon arc welding technique pressure-tight weld to be connected into parts ring, five parts of fairlead retainer ring behind ring, protective cover, the bellows before bellows, the bellows when welding for the first time.Welding is identical with existing low-voltage vacuum arc control device for the second time.Existing low-voltage vacuum arc control device are not owing to encircle behind ring and the bellows before having the bellows of channel section, and welding for the first time must be adopted the palladium parent metal, and welds and last 18 hours.And the argon arc welding technique that the utility model welds for the first time is simple, weld time short, do not adopt the palladium parent metal, and the scolder price is more much lower than palladium parent metal.Therefore, low-voltage vacuum arc control device of the present utility model have low cost of manufacture, with short production cycle, efficient advantages of higher.
The utility model is applicable to and combines low-voltage vacuum circuit breaker.Be specially adapted to cut-off short circuit current.
Below, the utility model is further described to use embodiment and accompanying drawing thereof again.
Description of drawings
Fig. 1 is the structural representation of a kind of low-voltage vacuum arc control device of the present utility model.
Fig. 2 is the structural representation of existing low-voltage vacuum arc control device.
Embodiment
Embodiment 1
A kind of low-voltage vacuum arc control device of the present utility model, as shown in Figure 1.Be in the shell by shell and being encapsulated in and cut-off closed moving contact component that cooperates and fixed contact assembly etc. and constitute.
Above-mentioned shell 1 has metal columnar external shield 2 and bezel ring, 3, has two ends to be the columnar porcelain shell 4 that coaxial line is connected with external shield and bezel ring, respectively.The porcelain shell is the bitubular shape that front end connects and is nested with mutually.The moving contact component end of shell has discoidal fairlead 5.The fairlead retainer ring 6 of the face of cylinder, outside end face edge and the inner side end that coat fairlead is arranged, and the ring section of fairlead retainer ring is horizontal unequal-sided II shape.The medial extremity of fairlead retainer ring has aduncate in-flanges 7 again.The inner face of fairlead retainer ring is connected with bezel ring, 3.The conducting ring 8 of the fixed contact assembly end clutch disk shape of shell.
Above-mentioned moving contact component 9 has the columniform moving conductive rod 10 that runs through fairlead 5 centre bores, the moving contact 11 of the front end clutch disk shape of moving conductive rod.Kink has the columnar bellows 12 of common structure on moving conductive rod.The front portion of bellows and porcelain shell 4 are positioned on the same annulus section.The front end of bellows connects the preceding ring 13 of bellows that annular ring section is unequal-sided U-shaped.The inner peripheral surface of ring is connected with moving conductive rod 10 before the bellows.The rear end of bellows encircles 14 after connecting the L-shaped bellows of annular section.The outer peripheral face that encircles behind the bellows is connected with the inner peripheral surface of fairlead retainer ring 6 in-flanges 7.Outside bellows, be set with the protective cover 15 of stepped cylindrical.The inner peripheral surface of the smaller diameter end of protective cover is connected with the outer peripheral face of the preceding ring 13 of bellows.The moving baffle plate 16 of board-like annular is arranged between the ring before moving contact and bellows, and the inner peripheral surface of moving baffle plate is connected with moving conductive rod 10.
Above-mentioned fixed contact assembly 17 has the columniform static conductive rod 18 that runs through conducting ring 8 centre bores and be tightly connected, the fixed contact 19 of the front end clutch disk shape of static conductive rod.Cover is connected with the quiet baffle plate 20 of board-like annular on the static conductive rod at fixed contact rear.
Assemble this low-voltage vacuum arc control device, adopt twice welding.Welding for the first time be with encircle 13 before bellows 12, the bellows, encircle 14 behind the protective cover 15, bellows, 6 five parts of fairlead retainer ring are by above-mentioned annexation, are connected into parts with the argon arc welding pressure-tight weld.Welding for the second time is by above-mentioned annexation parts and the remaining parts that is welded into for the first time to be assembled into integral body, and at each connecting portion filling silver-copper brazing alloy, to send into the envelope grate furnace through the integral body that assembles then, and vacuumize and be heated to welding temperature, soldering envelope row makes the low-voltage vacuum arc control device.
When this low-voltage vacuum arc control device pass through the contact-making surface of dynamic and static contact at short circuit current, moving contact is separated to the specified distance of opening, transverse magnetic field and electric arc arc column axis that contact produces are perpendicular, the electromagnetic force that it and arc current produce can make electric arc move at electrode surface, prevent electric arc rest on certain a bit on, delay the generation of anode spot, when the alternating current arc zero passage, make arc extinction, thereby cut-off short circuit current.
Claims (5)
1; a kind of low-voltage vacuum arc control device; the shell (1) that comprises tubular; fairlead retainer ring (6) that the shell two ends connect respectively and conducting ring (8); fairlead in the fairlead retainer ring (5); be in the shell and cut-off closed moving contact component (9) and the fixed contact assembly (17) that cooperates; above-mentioned moving contact component has and runs through the moving conductive rod (10) that fairlead and front end are connected with moving contact (11); be sleeved on the outer bellows (12) of moving conductive rod; be contained in the protective cover (15) of the outer tubular of bellows with ring (13) adapter sleeve before the bellows that the bellows front end is connected; the moving baffle plate (16) that before moving contact and bellows, interlocks with moving conductive rod between the ring; above-mentioned fixed contact assembly has and runs through the static conductive rod (18) that conducting ring and front end are connected with fixed contact (19); be positioned at the quiet baffle plate (20) of the annular that fixed contact rear and static conductive rod interlock; it is characterized in that the ring section that encircles before the above-mentioned bellows takes the shape of the letter U; (14) are encircled after connecting bellows in the rear end of bellows, and ring is connected with the fairlead retainer ring behind the bellows.
2, low-voltage vacuum arc control device according to claim 1; it is characterized in that said protective cover is the ladder tubular; the outer peripheral face of ring (13) is connected with the inner peripheral surface of the smaller diameter end of protective cover (15) before the bellows, and the inner peripheral surface of ring is connected with moving conductive rod (10) before the bellows.
3, low-voltage vacuum arc control device according to claim 1 and 2 is characterized in that the medial extremity of said fairlead retainer ring (6) has in-flanges (7), and the outer peripheral face of ring (14) is connected behind the inner peripheral surface of in-flanges and the bellows.
4, low-voltage vacuum arc control device according to claim 1 and 2.It is characterized in that said shell (1) has external shield (2) and bezel ring, (3), the porcelain shell (4) that two ends are connected with bezel ring, with external shield respectively, porcelain valve jacket are the bitubular shape that front end connects and is nested with outside bellows (12).
5, low-voltage vacuum arc control device according to claim 3, it is characterized in that said shell (1) has external shield (2) and bezel ring, (3), the porcelain shell (4) that two ends are connected with bezel ring, with external shield respectively, porcelain valve jacket are the bitubular shape that front end connects and is nested with outside bellows (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02276492 CN2570965Y (en) | 2002-09-16 | 2002-09-16 | Low-voltage vacuum quenching chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02276492 CN2570965Y (en) | 2002-09-16 | 2002-09-16 | Low-voltage vacuum quenching chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2570965Y true CN2570965Y (en) | 2003-09-03 |
Family
ID=33740331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02276492 Expired - Lifetime CN2570965Y (en) | 2002-09-16 | 2002-09-16 | Low-voltage vacuum quenching chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2570965Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097249A (en) * | 2009-12-15 | 2011-06-15 | 上海磁浮交通发展有限公司 | Vacuum arc extinguish chamber for three-phase alternating-current high voltage vacuum contactor |
| CN104538246A (en) * | 2014-12-12 | 2015-04-22 | 天津平高智能电气有限公司 | Vacuum arc-extinguishing chamber and vacuum breaker with vacuum arc-extinguishing chamber |
| CN111370254A (en) * | 2020-03-25 | 2020-07-03 | 贵州振华华联电子有限公司 | Large-current toggle switch with electromagnetic shielding characteristic |
-
2002
- 2002-09-16 CN CN 02276492 patent/CN2570965Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097249A (en) * | 2009-12-15 | 2011-06-15 | 上海磁浮交通发展有限公司 | Vacuum arc extinguish chamber for three-phase alternating-current high voltage vacuum contactor |
| CN104538246A (en) * | 2014-12-12 | 2015-04-22 | 天津平高智能电气有限公司 | Vacuum arc-extinguishing chamber and vacuum breaker with vacuum arc-extinguishing chamber |
| CN104538246B (en) * | 2014-12-12 | 2017-05-24 | 天津平高智能电气有限公司 | Vacuum arc-extinguishing chamber and vacuum breaker with vacuum arc-extinguishing chamber |
| CN111370254A (en) * | 2020-03-25 | 2020-07-03 | 贵州振华华联电子有限公司 | Large-current toggle switch with electromagnetic shielding characteristic |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120916 Granted publication date: 20030903 |