Gas-blast circuit interrupters with lateral venting action |
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| 申请号 | US3555227D | 申请日 | 1968-10-21 | 公开(公告)号 | US3555227A | 公开(公告)日 | 1971-01-12 |
| 申请人 | WESTINGHOUSE ELECTRIC CORP; | 发明人 | CROMER CHARLES F; CROOKSTON RONALD W; | ||||
| 摘要 | A gas-blast type of circuit interrupter is provided having an arcing chamber of insulating material with rows of lateral venting slots, serving as splitters. A cluster of stationary contact fingers within the arcing chamber make separating engagement with a tubular movable contact. A stationary hollow insulating arc plug is provided interiorly of the arcing chamber, within which gas is forced to flow. The arcing plug has lateral inlet slots provided therein, which emit arcing gas under pressure into the interior of the arcing chamber and laterally outwardly across the arc, and radially outwardly through the lateral slots provided in the stationary insulating arcing chamber. The arc is moved by the radial outward blast to be forced against the arcing splitters provided by the sidewalls of the stationary insulating arcing chamber. As an alternate arrangement, a side lateral dump is provided adjacent an elongated arcing contact finger, at which the arc is constantly drawn. This prevents the accumulation of stagnant ionized gases and arc products, which may otherwise accumulate in the pocket surrounding the annular stationary contact finger assembly. | ||||||
| 权利要求 | 1. A circuit interrupter of the compressed-gas type comprising, in combination: a. means defining an insulating arcing chamber having a plurality of circumferentially disposed lateral slots provided therein; b. stationary contact means disposed interiorly within said arcing chamber; c. a movable tubular contact adaptable for moving into and from the arcing chamber and into engagement with said stationary contact structure; and d. a hollow arcing plug stationary with respect to said arcing chamber and having a plurality of inlet slots provided therein, whereby gas may flow into the annular region externally of the arcing plug and radially outwardly through the slots provided within the arcing chamber for efficient arc-extinguishing action. 2. The combination according to claim 1, wherein the stationary contact structure comprises a plurality of stationary contact fingers. 3. The combination according to claim 2, wherein one of the contact fingers is lengthened. 4. The combination according to claim 3, wherein a lateral side dump is provided within the wall of the arcing chamber adjacent the elongated arcing contact finger. 5. The combination according to claim 1, wherein the outer surface of the arcing plug is rippled to improve the voltage-withstand characteristics thereof. 6. In combination, a movable tubular contact making separable engagement with a plurality of stationary contact fingers, an arcing plug telescopically arranged to enter into the movable contact in the closed-circuit position, an arcing chamber having a plurality of lateral slots provided therein, and the arcing plug having somewhat registering slots to provide a radial outward gas flow. 7. The combination according to claim 6 wherein one of the stationary contact fingers is elongated and has a lateral vent provided in the near vicinity thereof. 8. The combination according to claim 1, wherein the slots provided by the arcing chamber extend all of the circumferential distance thereabout and in addition are staggered. |
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