摘要:
A method includes controlling a bearing fluid supply system to provide the bearing fluid to a hydrostatic bearing of the turbopump assembly. The bearing fluid includes a supercritical working fluid. The method also includes receiving data corresponding to a pressure of the bearing fluid measured at or near a bearing fluid drain fluidly coupled to the hydrostatic bearing, determining a thermodynamic state of the bearing fluid at or near the bearing fluid drain based at least in part on the received data, and controlling a backpressure regulation valve to throttle the backpressure regulation valve between an opened position and a closed position to regulate a backpressure in a bearing fluid discharge line to maintain the bearing fluid in a supercritical state in the hydrostatic bearing and/or at or near the bearing fluid drain.
摘要:
A method of operating a wind turbine having a bearing assembly, a shaft received therein, and at least one sub-system capable of altering a dynamic state of the wind turbine includes monitoring at least one parameter indicative of a load on the shaft; comparing the at least one parameter to a threshold criteria; and when the at least one parameter meets the threshold criteria, altering the dynamic state of the wind turbine to reduce the load on the shaft; and/or altering the state of the bearing assembly to better accommodate the load on the shaft. A control system for the wind turbine includes a controller operatively coupled to the bearing assembly and the at least one sub-system, and at least one sensor for monitoring at least one parameter indicative of a load on the shaft. The controller signals the sub-system or the bearing assembly when the threshold criteria is met.
摘要:
A variable flow-rate hydrostatic bearing includes a variable flow-rate adjusting portion that reduces the flow rate of fluid and then introduces the fluid into a pocket. The variable flow-rate adjusting portion is configured such that a fluid supply chamber (32a) is separated from a fluid storage chamber (31a) having a projection (31b) by a leaf spring (33) that faces the projection (31b) with a predetermined clearance left therebetween, and the projection (31b) has an opening (31c) and a flow passage that is in communication with the pocket (2a). In the variable flow-rate hydrostatic bearing, a fixed orifice (33a) that provides communication between the fluid supply chamber (32a) and the fluid storage chamber (31a) is formed in the leaf spring (33) at a portion that does not face the projection (31b).
摘要:
Pad to be a part of one of a hydrostatic or hydrodynamic bearing, comprising: at least one receiving means (3) for receiving a distance sensor (5), and the at least one receiving means (3) being located such that the distance sensor (5), when mounted, faces a portion of the supported surface (7) of the pad (1). Applications within the hydrostatic and hydrodynamic bearings field, such as measuring and controlling fluid film thickness, are also disclosed.
摘要:
Es wird ein Regler zur Regelung eines mindestens einer Hydrostatik- oder Aerostatiktasche einer Lagerung, Gewindespindelmutter oder einer Führung von einer Medienversorgung zugeführten Medienstromes, mit von einem gegen die Kraft eines Federelements beweglichen Steuerelement getrennten Druckräumen, von denen ein mit einem ersten Druckniveau (p1) beaufschlagter erster Druckraum unmittelbar mit der Medienversorgung, ein mit einem niedrigeren zweiten Druckniveau (p2) beaufschlagter zweiter Druckraum über einen ersten Strömungswiderstand mit der Medienversorgung und ein dritter Druckraum, der mit einem dritten Druckniveau (p3) beaufschlagt ist, das dem in der Hydrostatik- oder Aerostatiktasche entspricht, mit der Hydrostatik- oder Aerostatiktasche verbunden ist, wobei durch das Steuerelement ein zwischen dem zweiten und dritten Druckraum angeordneter, den der Tasche zugeführten Medienstrom beeinflussender, variabler zweiter Strömungswiderstand ausgebildet ist, vorgeschlagen, der sich dadurch auszeichnet, daß ein mit einem dritten -vorzugsweise festen-Strömungswiderstand (33) versehener Bypass (29) vorgesehen ist, der einerseits mit der Hydrostatik- oder Aerostatiktasche und andererseits über den ersten Strömungswiderstand (21) mit der zugeführten Medienversorgung verbunden ist.
摘要:
A bearing construction has an annular clearance (31) provided between the outer surface of a rotary shaft (2) of a rotatable object (1) and the inner wall of a bearing assembly (3) and a fluid feeding means (44, 71) for filling the clearance (31) with a fluid to form a layer of the fluid. A shaft displacement detecting means (41, 43, 5) detects a displacement of the rotary shaft (2) during rotating action.
摘要:
Method for controlling a wind turbine (1) with a plain/sliding bearing (2) and bearing lubrication means (7), comprising the steps of: - Operating the bearing (2) as a hydrodynamic bearing (HD) in normal operation; and - Operating the bearing (2) as a hydrostatic bearing (HS) when the friction of the bearing (2) reaches a threshold.
摘要:
A hydrostatic guide device includes: a fixed member (19) having vertical guide faces (16a, 17a); a movable member (14) having vertical slide faces (14a1, 14a2); a fluid supply device (33); a hydrostatic pocket (34) to which a first fluid pressure (P1) based on a dimension of a gap (L1) is applied, and that urges the movable member with a first urging force (F1); and a hydraulic pocket (35) to which a second fluid pressure (P2) based on a dimension of a gap (L2) is applied, and that urges the movable member with a second urging force (F2). A variation of the second fluid pressure (P2) is smaller than a variation of the first fluid pressure (P1). When the first urging force and the second urging force are balanced with each other in a horizontal direction, the gap (L1) between the vertical guide face (16a) and the vertical slide face (14a1) becomes a set value.