CN101582348A - Low-voltage large-current vacuum arc extinguishing chamber - Google Patents
Low-voltage large-current vacuum arc extinguishing chamber Download PDFInfo
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- CN101582348A CN101582348A CNA2009100158599A CN200910015859A CN101582348A CN 101582348 A CN101582348 A CN 101582348A CN A2009100158599 A CNA2009100158599 A CN A2009100158599A CN 200910015859 A CN200910015859 A CN 200910015859A CN 101582348 A CN101582348 A CN 101582348A
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- contact
- vacuum arc
- arc extinguishing
- extinguishing chamber
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Abstract
The invention relates to a low-voltage large-current vacuum arc extinguishing chamber and belongs to a power part; the low-voltage large-current vacuum arc extinguishing chamber comprises a conduction block, a cover plate, a shielding cylinder, a porcelain shell, a contact, a corrugated pipe and a movable conduction rod; the low-voltage large-current vacuum arc extinguishing chamber is characterized in that the shielding cylinder is an inbuilt type shielding cylinder which is positioned at the inner side of the porcelain shell; the contact has a transverse magnetic structure; and an upper contact and a lower contact of the contact are respectively and directly connected with the conduction block and the conduction rod. The low-voltage large-current vacuum arc extinguishing chamber has small volume, large rated current and strong short-circuit breaking capacity.
Description
Technical field
The present invention relates to a kind of low-voltage large-current vacuum arc extinguishing chamber, belong to power components.
Background technology
At present, the primary structure characteristics of conventional low-voltage vacuum arc control device are:
(1) shielding cylinder is an external, stops the contact thing ability of evapotranspiring, and after repeating to cut-off short circuit current, the contact thing that evapotranspires evapotranspires on the porcelain shell inwall, causing insulation to descend, and the ceramic insulation shell is short, and insulation level is low.
(2) structure of contact terminal adopts the vertical magnetic structure of cup-shaped, and its external diameter is big, and is highly long, causes low-voltage vacuum arc control device volume big, the cost height.
Be so limited, it is 2500A that the maximum amount of existing low-voltage vacuum arc control device is decided electric current, and it is 65kA that maximum amount is decided short circuit breaking capacity.Want rated current and short circuit breaking capacity are done greatly, the volume of low-voltage vacuum arc control device will be done to such an extent that just can meet the demands very greatly, compares with conventional air switch on cost performance and does not preponderate.
Summary of the invention
The object of the present invention is to provide a kind of low-voltage large-current vacuum arc extinguishing chamber, volume is little, and rated current is big, and short circuit breaking capacity is strong.
Low-voltage large-current vacuum arc extinguishing chamber of the present invention comprises conducting block, cover plate, shielding cylinder, porcelain shell, contact, bellows and conducting rod, it is characterized in that shielding cylinder is built-in shielding cylinder, and shielding cylinder is positioned at the inboard of porcelain shell.
Shielding cylinder adopts built-in structure, can effectively stop the thing that evapotranspires of contact, and the porcelain shell that extended, and by behind 30 short circuit breakings, porcelain shell inwall does not have the thing of evapotranspiring vestige, has improved the insulation level of vacuum interrupter greatly.
The horizontal magnetic structure contact of contact design Wei Swastika shape is compared with the vertical magnetic structure of cup-shaped, can not only satisfy the performance requirement of low pressure, and diameter and highly also can do very for a short time, can dwindle the volume of low-voltage vacuum arc control device, reduces cost.
Contact up and down in the contact directly connects conducting block and conducting rod respectively, has saved cup, more compact structure, and volume is littler.
Among the present invention:
Adopt the CuCr45 contact material of electric arc melting explained hereafter, not only connecting-disconnecting function is strong, and resistance fusion welding can be good, can be effectively by close-0.4s-branch-3m-closes-0.4s-repeats the experimental condition that cut-offs several times.
Adopt the 00Cr17Ni14Mo2 corrugated stainless steel tubing, can reach the prolonged mechanical life-span mechanical endurance of vacuum interrupter 50000 times.
The important technological parameters of typical products TD-1.14/4000-100 of the present invention (CH170K) type low-voltage large-current vacuum arc extinguishing chamber is:
Rated voltage: 1.14kV
Rated current: 4000A
Specified short circuit breaking capacity: 100kA
Specified short circuit making capacity: 220kA
Mechanical endurance: 50000 times
Low-voltage vacuum circuit breaker rated current with its assembling is big, breaking capacity is strong, the life-span is long, is widely used in the electrical power trans mission/distribution systems such as 380V～1.14kV electric power, metallurgy, mine, railway.On power industry, filled up the blank that does not also have the low-voltage vacuum arc control device of rated current 4000A, specified breaking capacity 100kA up to now.
TD-1.14/4000-100 (CH170K) type low-voltage vacuum arc control device, the needs of product standard have been satisfied, small product size is little, in light weight, stable performance, and has passed through a complete set of type approval test in mechanical industry low-voltage explosion-proof electric equipment products quality monitoring inspection center.Rated current: 4000A, specified short circuit breaking capacity 100kA.
Description of drawings
Fig. 1, existing conventional low-voltage vacuum arc quenching chamber structure schematic diagram.
Fig. 2, TD-1.14/4000-100 of the present invention (CH170K) type low-voltage vacuum arc quenching chamber structure schematic diagram.
Structure of contact terminal schematic diagram among Fig. 3, Fig. 2.
A-A cross section structure schematic diagram among Fig. 4, Fig. 3.
Among the figure: 1-1, conducting block 1-2, shielding cylinder 1-3, cup 1-4, contact 1-5, porcelain shell 1-6, bellows 1-7, cover plate 1-8, conducting rod 2-1, conducting block 2-2, quiet cover plate 2-3, porcelain shell 2-4, shielding cylinder 2-5, fixed contact 2-6, moving contact 2-7, moving cover plate 2-8, bellows 2-9, moving conductive rod 2-10, L shaped fluting.
Embodiment
The invention will be further described in conjunction with the foregoing description accompanying drawing.
As shown in Figure 1, existing low-voltage large-current vacuum arc extinguishing chamber, comprise conducting block 1-1, cover plate 1-7, shielding cylinder 1-2, porcelain shell 1-5, contact 1-4, bellows 1-6 and conducting rod 1-8, shielding cylinder 1-2 is the external shielding cylinder, shielding cylinder 1-2 is positioned at the top of porcelain shell 1-5, and the contact up and down among the contact 1-4 connects conducting block 1-1 and conducting rod 1-8 by cup 1-3 respectively.
As Fig. 2, Fig. 3 and shown in Figure 4, low-voltage large-current vacuum arc extinguishing chamber of the present invention, comprise conducting block 2-1, quiet, moving cover plate 2-2,2-7, shielding cylinder 2-4, porcelain shell 2-3, quiet, moving contact 2-5,2-6, bellows 2-8 and moving conductive rod 2-9, shielding cylinder 2-4 is built-in shielding cylinder, shielding cylinder 2-4 is positioned at the inboard of porcelain shell 2-3, contact is that dynamic/static contact 2-5,2-6 directly connect conducting block 2-1 and moving conductive rod 2-9 respectively up and down, the horizontal magnetic structure contact of dynamic/static contact She Ji Wei Swastika shape, contact is provided with L shaped fluting 2-10.
Claims (3)
1, a kind of low-voltage large-current vacuum arc extinguishing chamber comprises conducting block, cover plate, shielding cylinder, porcelain shell, contact, bellows and moving conductive rod, it is characterized in that shielding cylinder is built-in shielding cylinder, and shielding cylinder is positioned at the inboard of porcelain shell.
2, low-voltage large-current vacuum arc extinguishing chamber according to claim 1 is characterized in that the horizontal magnetic structure contact of contact Wei Swastika shape.
3, low-voltage large-current vacuum arc extinguishing chamber according to claim 1 and 2 is characterized in that the contact up and down in the contact directly connects conducting block and conducting rod respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100158599A CN101582348A (en) | 2009-06-05 | 2009-06-05 | Low-voltage large-current vacuum arc extinguishing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100158599A CN101582348A (en) | 2009-06-05 | 2009-06-05 | Low-voltage large-current vacuum arc extinguishing chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101582348A true CN101582348A (en) | 2009-11-18 |
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ID=41364447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100158599A Pending CN101582348A (en) | 2009-06-05 | 2009-06-05 | Low-voltage large-current vacuum arc extinguishing chamber |
Country Status (1)
| Country | Link |
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| CN (1) | CN101582348A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715008A (en) * | 2013-12-03 | 2014-04-09 | 西安交通大学 | Longitudinal and transverse composite type vacuum arc-extinguishing chamber contact structure |
| CN105047470A (en) * | 2015-07-07 | 2015-11-11 | 西安交通大学 | Novel composite magnetic field contact structure and vacuum arc extinguishing chamber with application of novel composite magnetic field contact structure |
| CN112509853A (en) * | 2020-12-02 | 2021-03-16 | 特变电工云集高压开关有限公司 | Airflow control element with shielding function |
-
2009
- 2009-06-05 CN CNA2009100158599A patent/CN101582348A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715008A (en) * | 2013-12-03 | 2014-04-09 | 西安交通大学 | Longitudinal and transverse composite type vacuum arc-extinguishing chamber contact structure |
| CN103715008B (en) * | 2013-12-03 | 2016-03-30 | 西安交通大学 | One is composite vacuum arc-extinguishing chamber contact structure in length and breadth |
| CN105047470A (en) * | 2015-07-07 | 2015-11-11 | 西安交通大学 | Novel composite magnetic field contact structure and vacuum arc extinguishing chamber with application of novel composite magnetic field contact structure |
| CN112509853A (en) * | 2020-12-02 | 2021-03-16 | 特变电工云集高压开关有限公司 | Airflow control element with shielding function |
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| C12 | Rejection of a patent application after its publication | ||
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Application publication date: 20091118 |