IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0926837
(2002-03-22)
|
우선권정보 |
SE-9902429 (1999-06-28) |
국제출원번호 |
PCT/SE00/01362
(2000-06-28)
|
국제공개번호 |
WO01/01425
(2001-01-04)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- ABB T & D Technology Ltd.
|
대리인 / 주소 |
Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
6 |
초록
▼
A sound-insulating device for a stationary induction machine with an active part, an insulating fluid surrounding the active part, and a tank enclosing the insulating fluid. The sound-absorbing device includes a gas-filled cavity and a resilient member surrounding the gas-filled cavity, thus obtaini
A sound-insulating device for a stationary induction machine with an active part, an insulating fluid surrounding the active part, and a tank enclosing the insulating fluid. The sound-absorbing device includes a gas-filled cavity and a resilient member surrounding the gas-filled cavity, thus obtaining a sound-insulating device that is extremely compressible. In the induction machine, the device is arranged between the active part and the tank of the induction machine and is spaced from the inside of the tank. The sound-insulating device preferably has an extent in one plane, whereby the device has a membrane portion facing the active part and a membrane portion facing the tank. Preferably, at least one of the membrane portions has at least one corrugated region, and a spacing membrane is arranged in the cavity making contact with the membrane portion at at least two points.
대표청구항
▼
1. A stationary sound-insulating device for reducing sound radiation from an induction machine with an active part, an insulating fluid surrounding the active part, and a tank enclosing the insulating fluid, wherein the sound-insulating device comprises a gas-filled cavity, wherein the sound-insulat
1. A stationary sound-insulating device for reducing sound radiation from an induction machine with an active part, an insulating fluid surrounding the active part, and a tank enclosing the insulating fluid, wherein the sound-insulating device comprises a gas-filled cavity, wherein the sound-insulating device further comprises a resilient membrane surrounding the gas-filled cavity. 2. A sound-insulating device according to claim 1, wherein the device is extended in one plane and the membrane has a first membrane portion extending in the direction of the plane and a second membrane portion arranged substantially in parallel with the first membrane portion. 3. A sound-insulating device according to claim 2, wherein any of the membrane portions has at least one corrugated region. 4. A sound-insulating device according to claim 3, wherein the corrugated region covers at least one half of the membrane portion. 5. A sound-insulating device according to claim 4, wherein the corrugated region covers substantially the entire membrane portion. 6. A sound-insulating device according to claim 1, wherein the pressure in the cavity exceeds or is equal to the absolute pressure of the insulating fluid. 7. A sound-insulating device according to claim 1, wherein the pressure in the cavity is lower than the absolute pressure of the insulating fluid. 8. A sound-insulating device according to claim 1, wherein a resilient spacing member is arranged in the cavity making contact with the membrane at at least two points. 9. A sound-insulating device according claim 8, wherein the spacing member comprises a rubber plate. 10. A sound-insulating device according claim 8, wherein the spacing member comprises a spiral spring. 11. A sound-insulating device according claim 8, wherein the spacing member comprises a cushion of steel-wool. 12. A sound-insulating device according to claim 1, wherein the membrane has a substantially constant thickness. 13. A sound-insulating device according to claim 1, wherein the membrane is of thin, stainless sheet steel. 14. A stationary induction machine with an active part comprising a core and a winding subassembly, an insulating fluid surrounding the active part, a tank enclosing the insulating fluid, and at last one sound-insulating device arranged in the insulating fluid between the active part and the tank, said device comprising a gas-filled cavity, wherein the sound-insulating device further comprises a resilient membrane surrounding the cavity, the sound-insulating device being arranged spaced from the inside of the tank. 15. An induction machine according claim 14, wherein the sound-insulating device is extended in one plane and is aligned substantially parallel to the inside of the tank, whereby the membrane has a first membrane portion extending in the direction of the plane and facing the active part, and a second membrane portion arranged substantially parallel to the first membrane portion and facing the inside of the tank. 16. Use of an induction machine according to claim 15 in a distribution or transmission network. 17. An induction machine according to claim 15, wherein any of the membrane portions has at least one corrugated region. 18. An induction machine according to claim 14, wherein a resilient spacing member is arranged in the cavity making contact with the membrane portion at at least two points. 19. An induction machine according to claim 14, wherein the membrane has a substantially constant thickness. 20. An induction machine according claim 14, wherein the sound-insulating device is extended in one plane and is aligned substantially parallel to that of the surfaces of the core which is closest to the plate, whereby the membrane has a first membrane portion extending in the direction of the plane and facing the core and a second membrane portion arranged substantially parallel to the first membrane portion and facing the inside of the tank.
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