Rotary joint for underwater operation and system equipped therewith for generating energy from waterpower
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16C-033/78
F16C-033/72
F03B-011/00
F03B-011/06
F03B-017/06
F16C-033/60
F03B-013/10
F16C-033/66
F16C-019/38
출원번호
US-0110301
(2012-04-04)
등록번호
US-9334901
(2016-05-10)
우선권정보
DE-10 2011 016 185 (2011-04-05)
국제출원번호
PCT/EP2012/001488
(2012-04-04)
§371/§102 date
20140311
(20140311)
국제공개번호
WO2012/136358
(2012-10-11)
발명자
/ 주소
Schröppel, Werner
Frank, Hubertus
Hofmann, Georg
출원인 / 주소
IMO Holding GmbH
대리인 / 주소
Pandiscio & Pandiscio
인용정보
피인용 횟수 :
0인용 특허 :
4
초록▼
A rotary joint for use in a system for generating energy from water power, the joint comprising a first rotationally symmetrical connecting element and a second rotationally symmetrical connecting element disposed concentrically with the first connecting element and rotatable relative thereto, an an
A rotary joint for use in a system for generating energy from water power, the joint comprising a first rotationally symmetrical connecting element and a second rotationally symmetrical connecting element disposed concentrically with the first connecting element and rotatable relative thereto, an annular gap between the two connecting elements, and a row of rolling elements rolling along a race on each of the connecting elements, wherein provided to seal the annular gap is a sealing device having a sealing ring fixed to the first connecting element, and a circumferential sealing lip, or sealing surface, extends along a lead-in surface, wherein the second connecting element is divided into a race ring, with at least one race, and a lead-in ring with a lead-in surface for at least one sealing ring, the lead-in ring being removably connected to at least one race ring.
대표청구항▼
1. A rotary joint for underwater operation, the joint comprising a first annular connecting element and a second annular connecting element arranged concentrically with the first connecting element and rotatable relative thereto, an annular gap disposed between the two connecting elements, and at le
1. A rotary joint for underwater operation, the joint comprising a first annular connecting element and a second annular connecting element arranged concentrically with the first connecting element and rotatable relative thereto, an annular gap disposed between the two connecting elements, and at least one row of rolling elements rolling along a raceway on each of the first and the second connecting elements, wherein provided to seal the annular gap is a sealing device having at least one sealing ring, which is fixed to the first connecting element and comprises a circumferential sealing lip or sealing surface that extends along a thrust surface, wherein the second connecting element is divided into at least one raceway ring with at least one raceway and a thrust ring with the thrust surface for at least one sealing ring, wherein the thrust ring is provided with (i) a planar end face as a contact surface for surface-abutting contact with the raceway ring, and (ii) a plurality of fastening bores in this contact surface, distributed circularly about its circumference and serving for the through-passage of fastening screws, by which it is removably connected to the at least one raceway ring, wherein additional sealing rings are disposed between the thrust ring and the at least one raceway ring and surround the fastening bores to prevent the infiltration of water. 2. The rotary joint in accordance with claim 1 wherein the thrust ring is a selected one of (1) a material with the same standard potential or reduction potential E° as the raceway ring, or (2) the same material as the raceway ring. 3. The rotary joint in accordance with claim 1 wherein the thrust ring is of a material with a different standard potential, or reduction potential E°, from the raceway ring, and is of a more noble material than the raceway ring, or a non-rusting material that forms a spontaneous passivation layer. 4. The rotary joint in accordance with claim 1, wherein provided on a selected one of the thrust ring and the race ring is a circumferential centering collar that engages in a circumferential depression of complementary cross section to its own, provided in the respective other ring. 5. The rotary joint in accordance with claim 1, wherein the thrust ring is flange-mounted to the raceway ring. 6. The rotary joint in accordance with claim 5, wherein the first connecting element outwardly surrounds the thrust ring and the at least one raceway ring. 7. The rotary joint in accordance with claim 1, wherein the at least one raceway ring is provided with a plurality of internally threaded blind bores, distributed circularly about its circumference, into which fastening screws are adapted to be inserted. 8. The rotary joint in accordance with claim 1, wherein the thrust surface of the thrust ring is surface-hardened. 9. The rotary joint in accordance with claim 8, wherein the thrust surface is disposed on a cylinder-jacket-shaped, surface region of the thrust ring. 10. The rotary joint in accordance with claim 1, wherein the thrust ring and the raceway ring are disposed one behind the other in an axial direction. 11. The rotary joint in accordance with claim 1, wherein the first connecting element substantially overlaps the thrust ring and the at least one raceway ring in an axial direction. 12. The rotary joint in accordance with claim 1, wherein the at least one sealing ring is received in a recess of the first connecting element. 13. The rotary joint in accordance with claim 12, wherein the at least one sealing ring is clamped fixedly in an axial direction in the recess of the first connecting element by a clamping ring. 14. The rotary joint in accordance with claim 13, wherein the clamping ring is fixedly screwed to an end face of the first connecting element which includes the recess. 15. The rotary joint in accordance with claim 14, wherein the clamping ring overlaps in a radial direction the recess of the first connecting element. 16. The rotary joint in accordance with claim 1, wherein a plurality of the rolling elements is provided. 17. The rotary joint in accordance with claim 16, wherein the at least one row of the rolling elements comprise roller-shaped, barrel-shaped, or needle-shaped rolling elements. 18. The rotary joint in accordance with claim 1, wherein at least one of the connecting elements is configured as a nose ring, with a circumferential collar facing the annular gap, and on which are disposed one or more of the races for the rolling elements rolling therealong. 19. The rotary joint in accordance with claim 18, wherein the connecting element opposite the nose ring is divided into at least two raceway rings which together surround the circumferential collar of the nose ring. 20. A system for generating energy from waterpower, the system comprising at least one rotary joint for underwater operation and comprising a first rotationally symmetrical connecting element, and a second rotationally symmetrical connecting element arranged concentrically with the first connecting element and rotatable relative thereto, an annular gap disposed between the two connecting elements, and at least one row of rolling elements rolling along a raceway on each of the first and the second connecting elements, wherein provided to seal the annular gap is a sealing device having at least one sealing ring, which is fixed to the first connecting element and comprises a circumferential sealing lip or sealing surface that extends along a thrust surface, wherein the second connecting element is divided into at least one raceway ring with at least one raceway, and a thrust ring with the thrust surface for at least one sealing ring, wherein the thrust ring is provided with (i) a planar end face as a contact surface for surface-abutting contact with the raceway ring, and (ii) a plurality of fastening bores in this contact surface, distributed circularly about its circumference and serving for the through-passage of fastening screws, by which it is removably connected to the at least one raceway ring, wherein additional sealing rings are disposed between the thrust ring and the at least one raceway ring and surround the fastening bores to prevent the infiltration of water. 21. The system in accordance with claim 20, wherein the cross section of the sealing ring includes two legs connected to each other at one end, directly or via a web. 22. The system in accordance with claim 21, wherein a first cross-sectional leg of at least one sealing ring is provided with a generally rectangular shape and serves to anchor the ring to the first connecting element in a recess thereof. 23. The rotary system in accordance with claim 22, wherein a second cross-sectional leg of at least one sealing ring is provided on a side facing away from the first cross-sectional leg, proximate its free end, with a sealing lip or sealing surface. 24. The rotary system in accordance with claim 23, wherein disposed in a slot-shaped space between the two cross-sectional legs is a circumferential wire clamp that engages around a back side of the cross-sectional leg comprising the sealing lip or sealing surface, and presses the sealing lip or sealing surface thereof, against the thrust surface of the thrust ring. 25. The rotary system in accordance with claim 24, wherein the at least one sealing ring is disposed such that a slot or indent between the two cross-sectional legs is open to an outer side. 26. The rotary system in accordance with claim 21, wherein a plurality of sealing rings is provided, each two adjacent sealing rings being separated by a respective annular, disk-shaped, spacer element. 27. The rotary system in accordance with claim 26, wherein the spacer element is of a selected one of metal, ceramic and plastic material. 28. The rotary system in accordance with claim 26, wherein the spacer element is provided with at least one channel extending generally in the radial direction. 29. The rotary system in accordance with claim 28, wherein the spacer element is provided with a circumferential groove on the periphery thereof facing the first connecting element. 30. The rotary system in accordance with claim 29, wherein the first connecting element is provided with a lubrication channel at a level of a spacer element. 31. The rotary system in accordance with claim 30, wherein the lubrication channel contains grease as a lubricant. 32. A rotary joint for underwater operation, the joint comprising a first annular connecting element and a second annular connecting element arranged concentrically with the first connecting element and rotatable relative thereto, an annular gap disposed between the two connecting elements, and at least one row of rolling elements rolling along a raceway on each of the first and the second connecting elements, wherein provided to seal the annular gap is a sealing device having at least one sealing ring, which is fixed to the first connecting element and comprises a circumferential sealing lip or sealing surface that extends along a thrust surface, wherein the second connecting element is divided into at least one raceway ring with at least one raceway and a thrust ring with the thrust surface for at least one sealing ring, wherein the thrust ring is provided with (i) a planar end face as a contact surface for surface-abutting contact with the raceway ring, and (ii) a plurality of fastening bores in this contact surface, distributed circularly about its circumference and serving for the through-passage of fastening screws, by which it is removably connected to the at least one raceway ring, wherein additional sealing rings are disposed between the thrust ring and the at least one raceway ring and surround the fastening bores to prevent the infiltration of water, either in that each fastening bore is provided with an additional seal ring being concentric with it, or in that one such additional sealing ring is provided on each side of the circle of fastening bores. 33. A system for generating energy from waterpower, the system comprising at least one rotary joint for underwater operation and comprising a first rotationally symmetrical connecting element, and a second rotationally symmetrical connecting element arranged concentrically with the first connecting element and rotatable relative thereto, an annular gap disposed between the two connecting elements, and at least one row of rolling elements rolling along a raceway on each of the first and the second connecting elements, wherein provided to seal the annular gap is a sealing device having at least one sealing ring, which is fixed to the first connecting element and comprises a circumferential sealing lip or sealing surface that extends along a thrust surface, wherein the second connecting element is divided into at least one raceway ring with at least one raceway, and a thrust ring with the thrust surface for at least one sealing ring, wherein the thrust ring is provided with (i) a planar end face as a contact surface for surface-abutting contact with the raceway ring, and (ii) a plurality of fastening bores in this contact surface, distributed circularly about its circumference and serving for the through-passage of fastening screws, by which it is removably connected to the at least one raceway ring, wherein additional sealing rings are disposed between the thrust ring and the at least one raceway ring and surround the fastening bores to prevent the infiltration of water, either in that each fastening bore is provided with an additional seal ring being concentric with it, or in that one such additional sealing ring is provided on each side of the circle of fastening bores.
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