摘要:
Die Erfindung betrifft eine produktgeschmierte Mehrphasenpumpe (2, 110, 116) zum Pumpen eines kohlenwasserstoffhaltigen Mehrphasengemischs. Um eine gute Kühlung und Schmierung von Pumpenelementen ohne viele Betriebsmittel und Betriebsmittelkreisläufe zu erreichen, wird vorgeschlagen dass die Mehrphasenpumpe (2, 110, 116) ein eine erste Trennstufe (42) aufweisendes Trennsystem (40) zum zumindest teilweisen Trennen von zumindest einem Teil des Mehrphasengemischs in mehrere phasenangereicherte Komponenten aufweist und auch ein Zuführsystem (66) zum Zuführen einer flüssigkeitsangereicherten Flüssigkeitskomponente als Schmiermittel zu einem zu schmierenden Pumpenelement.
摘要:
Ein Ölversorgungssystem für ein Propellerturbinentriebwerk umfasst einen ersten Ölkreislauf (1) zur Versorgung der Turbomaschine (2) und einen zweiten Ölkreislauf (3) zur Versorgung des Propellergetriebes (4) und der einer Propellerverstellvorrichtung (5) zugeordneten Hochdruckpumpe (6). Die beiden Ölkreisläufe sind in einen gemeinsamen Öltank (7) eingebunden und in Fließrichtung hinter der ersten und zweiten Ölförderpumpe (8, 11) über eine Ölzufuhrleitung (14) miteinander verbunden, und zwar derart, dass ein begrenzter Ölvolumenstrom vom ersten in den zweiten Ölkreislauf, und zwar nur in dieser Richtung, fließen kann, wenn bei einer Druckminderung im zweiten Ölkreislauf (3) eine bestimmte Druckdifferenz zwischen dem ersten und dem zweiten Ölkreislauf (1, 3) unterschritten wird. Auf diese Weise wird auch bei niedrigen Propellerdrehzahlen und transienten Propellerverstellvorgängen ein ausreichend hoher Ölvordruck an der Hochdruckpumpe erzeugt, so dass die Funktion der Propellerverstelleinrichtung nicht beeinträchtigt wird und die Hochdruckpumpe nicht beschädigt wird. Durch die Begrenzung des Ölvolumenstroms in der die beiden Ölkreisläufe verbindenden Ölzufuhrleitung wird verhindert, dass während der Ölentnahme aus dem ersten Ölkreislauf eine Unterversorgung der Turbomaschine mit Öl auftreten kann.
摘要:
An integrated pressurized pump shaft seal assembly for a rotary fluid pump is disclosed. The seal assembly may include an oil reservoir; an integrated centrifugal oil pump directly attached to and rotatable by a pump shaft and fluidly connected to receive oil from the oil reservoir; a seal chamber fluidly connected to receive pressurized oil from the centrifugal oil pump and comprising: a pump shaft bearing adapted to be lubricated by said oil, and a mechanical shaft seal surrounding the pump shaft and adapted to seal the seal chamber against ingress of a pumped fluid. The integrated pressurized pump shaft seal assembly may also use first and second mechanical shaft seals. A rotary fluid pump including a pump motor, pump shaft, pump impeller assembly and integrated pressurized pump shaft seal assembly is disclosed. A method of preventing seal failure in a rotary fluid pump is also disclosed.
摘要:
A submersible fluid system for operating submersed in a body of water includes an electric machine and a fluid-end. The fluid-end includes a fluid-end housing having an inlet to a fluid rotor, the fluid rotor coupled to the electric machine and carried to rotate in the housing by a bearing in the housing. A fluid separator system receives a multiphase fluid and communicates a flow of the fluid to the inlet and a substantially liquid flow extracted from the multiphase fluid to the bearing.
摘要:
A housing for a seal assembly of a pump, the housing comprising a main body having a wall section with inner and outer sides, and a bore extending through the main body between the inner and outer sides, a holder protruding from the inner side of the main body, the holder having an outer edge and a bearing face which is inclined inwardly towards the inner side, and extending from the outer edge towards the bore. There is also disclosed a lifting device for use with the housing.
摘要:
A pump housing support for use in a pump assembly, the pump assembly including a plurality of component parts which include a seal housing, a drive shaft having a rotation axis, an impeller and a pump housing, the pump housing which includes a main liner. The pump housing support comprises: a base and a mounting member which includes a body portion to which a part of the pump housing can be mounted and a locating flange extending therefrom, the locating flange having first and second locating surfaces on opposing sides thereof, wherein the main liner is located on the first locating surface and the seal housing is located on the second locating surface.
摘要:
The invention relates to a pump of a pump unit (100) wherein said pump is a kinetic pump (6) that is driven by an electric and/or pneumatic machine (M) and comprises machine means arranged to control the pump velocity. Said pump (6) is a direct driven pump comprising medium lubricated fluid bearings (FB).
摘要:
A lubricant composition for lubricating a high pressure compressor, the composition comprising a Fischer-Tropsch derived base oil and a polymeric thickener. Use in high pressure compressors, especially hyper compressors is described, as are high pressure olefin methods.
摘要:
An axial air movement fan having a plurality of variable pitch fan blades (2), extending radially from a hub (4) rotatable about a main axis (3), each blade (2) further being pivotable about its radial axis to vary the blade pitch. The blades (2) each are mounted on an associated bearing (5) mounted on said hub, the bearing comprising a ball bearing having a first radially inner race (25) fast the blade (2) and a second radially outer race (26) rotationally fast to the hub (4). The balls (14) in the bearing are separated by separators (15), each separator being generally cylindrical and having its cylindrical axis coaxial with the orbital axis (22) of the orbit of the balls (14) and being adapted to rotate about the said orbital axis (22), the side faces of the separator each having a part spherical recess (16) adapted to receive a ball (14). Rotation of the separator (15) about the orbital axis (22) is such as to entrain lubricant in the bearing and to bias the lubricant from adjacent the outer race (26) over the balls (14) towards the inner race (25).