Rotary machine equipped with a thrust balancing arrangement
US4915514A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1989 |
| Grant date | Apr 10, 1990 |
| Priority date | — |
| Expiry date | Jul 20, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/43
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A housing (1) of a rotary machine comprises a low-pressure side (2) and a high-pressure side (3), working-fluid inlet and outlet channels, and at least one rotor (7), which when the machine is working is urged by a working fluid towards the low-pressure side (2). The rotor includes a thrust balancing arrangement (15, 16) for relieving the load on the thrust bearings (11) of the machine, through the medium of an auxiliary bearing (17) and in dependence on pressure fluid supplied to the thrust balancing arrangement, the pressure of which fluid is contingent on the operating conditions of the machine. A relatively large part of the axial load is taken-up by an auxiliary thrust bearing (17), which is readily replaceable. The auxiliary bearing (17) is mounted on an outermost part of the rotor journal shaft (18), on the high-pressure side (3) of the rotor, between a detachable locking device (27) for the auxiliary bearing (17) and the thrust balancing arrangement. The thrust balancing arrangement is located inwards of the auxiliary thrust bearing and includes two annular piston-cylinder parts (15, 16) which are axially extendible and which are located in a cylindrical recess (14) in the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.