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Pad-type thrust bearing and rotary machine comprising such a thrust bearing

A technology of thrust bearings and liners, which is applied in the field of liner type thrust bearings and can solve problems such as fluid leakage and air bubble intrusion

Inactive Publication Date: 2013-03-20
ALSTOM RENEWABLE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Units formed by housing and conduit assemblies have the risk of fluid leakage and air bubble intrusion at the junction between the housing and conduit

Method used

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  • Pad-type thrust bearing and rotary machine comprising such a thrust bearing
  • Pad-type thrust bearing and rotary machine comprising such a thrust bearing
  • Pad-type thrust bearing and rotary machine comprising such a thrust bearing

Examples

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Embodiment Construction

[0019] figure 1 The middle part shows a water turbine T comprising an annulus 101 that rotates integrally with the wheels of the turbine T, not shown, around a vertical axis Z when the turbine T is in operation 1 rotate. The ring 101 is supported relative to the fixed structure 102 by a bearing formed by an oil film 103 defined between the lower surface 1012 of the ring 101 and the upper surfaces 1042 of the eight pads 104, which 104 around axis Z 1 regular distribution.

[0020] The pads 104 belong to the pad type thrust bearing 1 which makes it possible to adjust the height of the various surfaces 1042 relative to the structure 102 in order to guarantee the continuity of the oil film 103 . In addition to the pads 104 , the thrust bearing 1 also includes a load transfer block 105 and a shim 106 below each pad 104 , one of which is located below the other. Between each load transfer block 105 and the gasket 106 below the load transfer block 105 is equipped with a deformabl...

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PUM

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Abstract

The present invention relates to a pad-type thrust bearing (1) in which each pad (104) rests on a volume of liquid enclosed in a cavity (V4) connected to adjacent cavities by ducts (6). The thrust bearing (1) comprises a number of convex casings (4) each on its own delimiting a cavity (V4) and which are connected to one another by ducts (6). The convex casings (4) and the ducts (6) together form a hollow functional subassembly (2) which is separate from the other constituent components of the thrust bearing (1) and which delimits a liquid-filled closed volume (V2). According to the invention, each casing (4) comprises two half-shells positioned one on each side of a flexible bladder and each duct (6) comprises a flexible hose inserted in a sheath.

Description

technical field [0001] The present invention relates to a pad type thrust bearing for a rotary machine. Background technique [0002] It is known in FR-A-1200013 and FR-A-1141857 to use a thrust bearing of the pad type comprising a disc to provide for the distribution of the load imposed on the pad belonging to a first assembly having A pivotal connection comprising a second assembly; said discs covering in a sealed manner the cavities interconnected by conduits and enclosing the liquid under pressure, each pad resting against the discs. In operation, when any geometrical imperfection occurs on the assembly with the pivotal connection, it is substantially immediately relieved by the deformation of the disc produced during the transitory phase. During this brief period a transfer of fluid between the cavities occurs such that the load exerted by the gasket on the disc is maintained at a substantially constant value. The procedure for filling such a device is complicated bec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C17/06F16C41/02F16C23/04
CPCF16C17/06F16C41/02F16C17/04F16C23/04F16C33/02F16C2300/14F16C2360/00
Inventor L·梅莱
Owner ALSTOM RENEWABLE TECH
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