Title:
補償ユニットを有する回転コネクタ
Document Type and Number:
Japanese Patent JP4089859
Kind Code:
B2
Abstract:
A rotating connector for the transfer of at least one pressurized process fluid, and comprising a central stem (2) on which there is placed a number of ring elements (3, 4) comprising at least one annulus element (3) for fluid transfer between an associated course (8) in the stem (2) and an outlet (9) from the connector, and a bearing ring element (4) arranged on each side of the annulus element (3) and sealed there-against by dynamic seals (14) operated by means of a barrier liquid having a higher pressure than the process fluid pressure, and a looking nut (21) to keep the ring elements (3, 4) preloaded against a shoulder (20) on the stem (2). The connector is provided with a compensating unit (22) in the form of a piston means (23, 24) placed between the looking nut (21) and an adjacent ring element (13) on the stem (2), and which is arranged to be activated by a hydraulic pressure fluid, so that a preload on the ring elements (3, 4) and the bearings (11) is maintained during operation of the connector, and changes of the extrusion openings in the sealing zones are reduced to a minimum.
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Inventors:
Odegard Jean
Application Number:
JP2000538122A
Publication Date:
May 28, 2008
Filing Date:
March 25, 1999
Export Citation:
Assignee:
Start toll
International Classes:
E21B17/05; E21B33/08; F16L19/00; F16L39/04; F16L39/06
Foreign References:
| US4819966 |
Attorney, Agent or Firm:
Hatsushi Shimizu