CN2899090Y - Gas-operated arc extinguisher of circuit breaker - Google Patents
Gas-operated arc extinguisher of circuit breaker Download PDFInfo
- Publication number
- CN2899090Y CN2899090Y CN 200620068840 CN200620068840U CN2899090Y CN 2899090 Y CN2899090 Y CN 2899090Y CN 200620068840 CN200620068840 CN 200620068840 CN 200620068840 U CN200620068840 U CN 200620068840U CN 2899090 Y CN2899090 Y CN 2899090Y
- Authority
- CN
- China
- Prior art keywords
- orifice plate
- arc
- cover board
- circuit breaker
- casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model belongs to low voltage electric equipment, relating to a gas-operated arc extinguisher of circuit breaker used in low voltage circuit breaker, which comprises a casing and an arc-extinguishing grid arranged in the casing intracavity, wherein, the casing top is provided with a metal cover board with a ventilation hole; between the metal cover board and the top of the arc-extinguishing grid two layers of expanded metals are arranged with the lower expanded metal being a fixed orifice plate fixedly connected to the casing wall board and the upper expanded metal being an active orifice plate pressed on the superior surface of the fixed orifice plate through an elastic component; the positions of the through holes arranged on the fixed orifice plate and the active orifice plate are staggered and communicated only through gaps smaller than aperture of the through holes. The utility model is simple in structure and reliable in operating, and is able to maintain required gas pressure inside the arc distinguish chamber during arc-extinguishing process and to automatically release pressure when in excessive pressure.
Description
Technical field
The utility model belongs to low voltage electrical equipment, relates to a kind of Air Operated Arc-Extinguishing Device of Circuit Breakers that uses in low-voltage circuit breaker.
Background technology
The arc-control device of low-voltage circuit breaker generally comprises arc control device that are made of insulation shell, in arc control device, be provided with the multilayer arc extinguishing grid pieces, when arc-control device occurs at circuit breaker electric arc, can in arc control device, produce bigger air pressure, certain air pressure helps arc extinguishing, but air pressure needs again pressure is discharged when excessive.Common arc-control device generally is the cover plate that porous is set at the top of arc extinguishing grid pieces, as the passage of air pressure release.Since perforated lid the air-flow flux fix, therefore can not play the effect that the arc control device internal gas pressure is regulated and control, thereby can not guarantee in the arc extinguishing process, to have comparatively ideal air pressure conditions in the arc control device.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of Air Operated Arc-Extinguishing Device of Circuit Breakers of simple in structure, reliable in action, make it can either be in the arc extinguishing process in arc control device, keep required gas pressure, simultaneously release pressure automatically again when pressure is excessive.
Air Operated Arc-Extinguishing Device of Circuit Breakers of the present utility model include housing and be installed in the housing inner chamber arc extinguishing grid pieces, be provided with the metal cover board that has air vent hole in case top, between the top of metal cover board and arc extinguishing grid pieces, be provided with two-layer expanded metal; Wherein the expanded metal of lower floor is fixing orifice plate, and it directly is fixedly connected on the wallboard of housing, and the expanded metal on upper strata is a removable orifice plate, and it is pressed against fixedly orifice plate upper surface by flexible member; The through hole that is arranged on the fixing orifice plate staggers mutually with its position of through hole that is arranged on the removable orifice plate, only communicates by the gap less than the aperture.Described flexible member can be mounted in several compression springs between metal cover board and the removable orifice plate.
The utility model is owing to be provided with fixedly orifice plate and the removable orifice plate that lead to the hole site staggers mutually on the exhaust passage of arc control device, thereby when the arc control device internal gas pressure hour, can keep less exhaust flux, to satisfy the required gas pressure of arc extinguishing, and when the arc control device internal gas pressure surpasses certain value, the elastic force that removable orifice plate can overcome flexible member under pressure upwards lifts, and the flux of exhaust is increased, thereby discharge excessive pressure.Simultaneously it is simple in structure, with low cost, be easy to realize.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the fixing local enlarged diagram of orifice plate and removable orifice plate installation site.
Embodiment
As shown in Figure 1, in the housing 1 of Air Operated Arc-Extinguishing Device of Circuit Breakers of the present utility model arc extinguishing grid pieces 2 is installed, their common formation arc control device, be provided with the metal cover board 3 that has steam vent in case top, one deck fixedly orifice plate 4 and one deck removable orifice plate 5 are arranged between metal cover board 3 and arc extinguishing grid pieces 2, fixedly orifice plate is fixedly mounted on the sidewall of housing, and removable orifice plate is pressed against fixedly on the orifice plate upper surface by flexible member 6 (compression spring).As shown in Figure 2, being distributed in through hole 7a and 7b on the fixedly orifice plate and removable orifice plate, staggers mutually in its position.
Claims (2)
1, a kind of Air Operated Arc-Extinguishing Device of Circuit Breakers, include housing (1) and be installed in the housing inner chamber arc extinguishing grid pieces (2), be provided with the metal cover board (3) that has air vent hole in case top, it is characterized in that: between the top of metal cover board and arc extinguishing grid pieces, be provided with two-layer expanded metal, wherein the expanded metal of lower floor is fixing orifice plate (4), it directly is fixed on the wallboard of housing, the expanded metal on upper strata is removable orifice plate (5), and it is pressed against fixedly on the orifice plate upper surface by flexible member (6); The through hole (7a) that is arranged on the fixing orifice plate staggers mutually with its position of through hole (7b) that is arranged on the removable orifice plate, only communicates by the gap less than the aperture.
2, Air Operated Arc-Extinguishing Device of Circuit Breakers according to claim 1 is characterized in that: described flexible member is mounted in several compression springs between metal cover board (3) and the removable orifice plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620068840 CN2899090Y (en) | 2006-01-25 | 2006-01-25 | Gas-operated arc extinguisher of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620068840 CN2899090Y (en) | 2006-01-25 | 2006-01-25 | Gas-operated arc extinguisher of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2899090Y true CN2899090Y (en) | 2007-05-09 |
Family
ID=38074423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620068840 Expired - Lifetime CN2899090Y (en) | 2006-01-25 | 2006-01-25 | Gas-operated arc extinguisher of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2899090Y (en) |
-
2006
- 2006-01-25 CN CN 200620068840 patent/CN2899090Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Daqo Kaifan Electric Appliance Co., Ltd. Assignor: Daquan Group Co., Ltd. Contract fulfillment period: 2007.12.20 to 2015.12.19 Contract record no.: 2008320000261 Denomination of utility model: Gas-pushing arc-extinguishing device of the breaker Granted publication date: 20070509 License type: Exclusive license Record date: 20080923 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.12.20 TO 2015.12.19 Name of requester: JIANGSU DAQUAN KAIFAN ELECTRICAL APPLIANCES CO., Effective date: 20080923 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090429 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090429 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |