IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0279185
(2007-01-12)
|
등록번호 |
US-7824458
(2010-11-22)
|
우선권정보 |
SE-0600311(2006-02-13) |
국제출원번호 |
PCT/SE2007/050010
(2007-01-12)
|
§371/§102 date |
20080813
(20080813)
|
국제공개번호 |
WO07/094724
(2007-08-23)
|
발명자
/ 주소 |
- Borgström, Leonard
- Carlsson, Claes-Göran
- Skoog, Jan
- Ridderstråle, Rolf
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
30 인용 특허 :
8 |
초록
▼
The invention refers to a centrifugal separator for cleaning of a gas containing liquid impurities. The centrifugal separator comprises a stationary casing, which encloses a separation space and has an inner wall surface. A rotating member is provided in the separation space and arranged to rotate i
The invention refers to a centrifugal separator for cleaning of a gas containing liquid impurities. The centrifugal separator comprises a stationary casing, which encloses a separation space and has an inner wall surface. A rotating member is provided in the separation space and arranged to rotate in a direction of rotation around an axis (x) of rotation. The rotating member brings the gas to rotation for separation of the liquid impurities from the gas. A gas outlet is provided for discharge of the cleaned gas. A first liquid outlet is provided downstream the rotating member for discharge of separated liquid impurities. The separation space comprises an annular surface which extends between the rotating member and the inner wall surface. The annular surface is configured to transport liquid impurities radially outwardly to the first liquid outlet.
대표청구항
▼
What is claimed is: 1. A centrifugal separator for cleaning of a gas containing liquid impurities, wherein the centrifugal separator comprises: a stationary casing, which encloses a separation space and has an inner wall surface which faces the separation space, wherein the separation space permits
What is claimed is: 1. A centrifugal separator for cleaning of a gas containing liquid impurities, wherein the centrifugal separator comprises: a stationary casing, which encloses a separation space and has an inner wall surface which faces the separation space, wherein the separation space permits flowing of the gas therethrough; an inlet for the gas to be cleaned; a rotating member, which is provided in the separation space downstream the inlet with respect to the gas flow and arranged to rotate in a direction (r) of rotation around an axis (x) of rotation, wherein the rotating member is adapted to bring the gas to rotation in the direction (r) of rotation for separating, by means of centrifugal forces, at least a main part of the liquid impurities from the gas; a gas outlet, which with respect to the gas flow is provided downstream the rotating member for discharge of the cleaned gas; and a first liquid outlet, which is provided for discharge of the separated liquid impurities, wherein the separating space comprises an annular surface, which extends between the rotating member and the inner wall surface, and where the annular surface is configured to transport liquid impurities radially outwardly to the first liquid outlet. 2. A centrifugal separator according to claim 1, wherein the centrifugal separator comprises a number of guide elements provided on the annular surface and arranged to promote said transport. 3. A centrifugal separator according to claim 2, wherein said guide elements seen radially outwardly are directed forwardly in the direction (r) of rotation. 4. A centrifugal separator according to claim 3, wherein said guide elements are substantially straight seen in the direction of the axis (x) of rotation. 5. A centrifugal separator according to claim 4, wherein said guide elements are curved seen in the direction of the axis (x) of rotation. 6. A centrifugal separator according to claim 2, wherein said guide elements are configured as ribs extending upwardly from the annular surface. 7. A centrifugal separator according to claim 2, wherein said guide elements are configured as grooves extending downwardly from the annular surface. 8. A centrifugal separator according to claim 2, wherein each guide element has a first radially inner end and a second radially outer end, wherein the radially outer end is located in the proximity of but at a distance from the inner wall surface so that a radially outer passage is formed between the inner wall surface and the radially outer end. 9. A centrifugal separator according to claim 8, wherein the radially inner end is located in the proximity of but at a distance from an annular inner end of the annular surface so that a radially inner passage is formed between the annular inner end and the radially inner end. 10. A centrifugal separator according to claim 9, wherein the annular inner end of the annular surface is defined by an upwardly protecting surrounding surface. 11. A centrifugal separator according to claim 1, wherein the annular surface is conical and inclined outwardly and downwardly. 12. A centrifugal separator according to claim 1, wherein the first liquid outlet comprises an annular collecting channel, which extends around the separation space radially outside the inner wall surface. 13. A centrifugal separator according to claim 12, wherein the first liquid outlet comprises at least one outlet hole, which extends between the separation space and the collecting channel and which adjoins the annular surface. 14. A centrifugal separator according to claim 1, wherein the centrifugal separator is arranged to be provided in such a way that the axis (x) of rotation extends substantially vertically, wherein the stationary casing has an upper end and a lower end and wherein the first liquid outlet is provided at the lower end. 15. A centrifugal separator according to claim 14, wherein the annular surface forms a lower end surface of the separation space. 16. A centrifugal separator according to claim 14, wherein the gas outlet is provided in the proximity of the upper end. 17. A centrifugal separator according to claim 1, wherein the rotating member comprises a number of separating discs. 18. A centrifugal separator according to claim 1, wherein the centrifugal separator also comprises a second liquid outlet, which is provided upstream the gas outlet and downstream the first liquid outlet for discharge of separated liquid impurities and which comprises at least one outlet hole. 19. A centrifugal separator according to claim 18, wherein the first liquid outlet forms a main outlet and the second liquid outlet forms a residual outlet. 20. A centrifugal separator according to claim 18, wherein the centrifugal separator comprises a surrounding ring groove, which extends outwardly from the inner wall surface in the stationary casing and which has a surrounding bottom surface, wherein the outlet hole of the second liquid outlet extends outwardly from the bottom surface. 21. A centrifugal separator according to claim 20, wherein the second liquid outlet also comprises an annular collecting channel, which extends around the separation space radially outside the ring groove. 22. A centrifugal separator according to claim 21, wherein the outlet hole of the second liquid outlet extends between the ring groove and the collecting channel. 23. A centrifugal separator according to claim 20, wherein the ring groove has a first limiting wall, which extends downstream the bottom surface, between the bottom surface and the inner wall surface, wherein the outlet hole of the second liquid outlet has an upper point located beneath the first limiting wall. 24. A centrifugal separator according to claim 23, wherein the first limiting wall extends substantially in parallel with a radial plane. 25. A centrifugal separator according to claim 24, wherein the ring groove has a second limiting wall, which extends upstream the bottom surface between the bottom surface and the inner wall surface. 26. A centrifugal separator according to claim 25, wherein the second limiting wall is inclined in relation to a radial plane. 27. A centrifugal separator according to claim 18, wherein the centrifugal separator comprises at least one guide vane, which is provided to guide the flow of the separated liquid impurities through the outlet hole of the second liquid outlet. 28. A centrifugal separator according to claim 27, wherein the guide vane extends through the outlet hole of the second liquid outlet. 29. A centrifugal separator according to claim 27, wherein the guide vane extends in at least one direction, which is inclined outwardly and forwardly in relation to a tangent to the direction (r) of rotation at the outlet hole of the second liquid outlet. 30. A centrifugal separator according to claim 18, wherein the outlet hole of the second liquid outlet in relation to the direction of rotation has a forward limiting surface and a rearward limiting surface, wherein at least one of these limiting surfaces extends in a direction, which is inclined outwardly and forwardly in relation to a tangent of the direction (r) of rotation at the outlet hole of the second liquid outlet.
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