Abstract:
Es wird eine Erosionsschutzschicht für aerodynamische Komponenten oder Strukturen (1) sowie ein Verfahren zur Herstellung einer solchen beschrieben. In einer Bindeschicht (3) aus einem auf der aerodynamischen Komponente oder Struktur (1) gut haftenden Material sind eine Vielzahl von mikro- oder nanoskaligen Hartstoffpartikeln (4) eingelagert. Die Erosionsschutzschicht (2) kann durch Aufspritzen oder Aufdampfen aufgetragen werden.
Abstract:
The present invention provides a water lubricated line shaft bearing assembly, comprising an outer annular steel shell and an inner layer made of low friction material attached to the outer shell, the inner layer having a non-uniform thickness which is formed with wall portions of increased thickness defining a plurality of shaft engaging portions and with wall portions of reduced thickness defining a plurality of lubricant passages. The shaft engaging portions are capable of being journalled on a line shaft adapted to drive a downhole geothermal production pump and the steel shell is engageable with an inner wall of a lubrication tube vertically extending through a water column through which pumped geothermal fluid is delivered, lubrication water bled from the pumped geothermal fluid being used to supply lubrication water through the lubricant passages. The steel shell has sufficient compressive strength to withstand the stress imposed by the high rotational speed of the line shaft of the geothermal production pump. The low friction material of the inner liner allows solid debris present or entrained in the lubrication water to slide over the inner line. Solid debris is prevented from accumulating due to the presence of the passages through which the lubrication water flows.
Abstract:
Electric submersible well pumping systems operable in well temperatures of above about 180°C (356°F) utilize high temperature electrical insulation. The electrical insulation includes E-base polyimide films or perfluoropolymer TE films on various components. The insulation films are employed around magnet wires that are threaded through slots in the stator. Slot insulation of E-base polyimide or perfluoropolymer TE film surrounds the magnet wires in the stator slots. Sheets of E-base polyimide or perfluoropolymer TE film extend around and between phase loops of the magnet wire at the lower end of the stator. The motor contains a PAO oil having additives to dissipate acid generated by epoxy used in the motor.
Abstract:
Electric submersible well pumping systems operable in well temperatures of above about 180°C (356°F) utilize high temperature electrical insulation. The electrical insulation includes E-base polyimide films or perfluoropolymer TE films on various components. The insulation films are employed around magnet wires that are threaded through slots in the stator. Slot insulation of E-base polyimide or perfluoropolymer TE film surrounds the magnet wires in the stator slots. Sheets of E-base polyimide or perfluoropolymer TE film extend around and between phase loops of the magnet wire at the lower end of the stator. The motor contains a PAO oil having additives to dissipate acid generated by epoxy used in the motor.
Abstract:
The present invention provides a water lubricated line shaft bearing assembly, comppsing an outer annular steel shell and an inner layer made of low function material attached to the outer shell, the inner layer having a non-uniform thickness which is formed with wall portions of increased thickness defining a plurality of shaft engaging portions and with wall portions of reduced thickness defining a plurality of lubricant passages The shaft engaging portions are capable of being journaled on a line shaft adapted to drive a downhole geothermal production pump and the steel shell is engageable with an inner wall of a lubrication tube vertically extending through a water column through which pumped geothermal fluid is delivered, lubrication water bled from the pumped geothermal fluid being used to supply lubrication water through the lubricant passages
Abstract:
La présente invention concerne un dispositif d'isolation thermique pour une turbogénératrice comprenant une turbine (30) dont la roue (66) est entraînée en rotation par un fluide chaud circulant entre une entrée (32, 32') et une sortie (34, 34') de fluide, et une génératrice électrique (38) accouplée à cette roue par un arbre de liaison (36). Selon l'invention, un bouclier thermique en polymère est interposé à la jonction entre la turbine (30) et la génératrice (38).
Abstract:
L'invention propose un bras de guidage d'au moins un élément de forme allongée (20), correspondant à un ensemble de câbles et/ou de canalisations. Le bras comprend une cavité interne (62) débouchant à l'extérieur du bras à chacune de ses extrémités, et où peuvent s'étendre les éléments de forme allongée. Selon l'invention, cette structure comprend plus particulièrement -un châssis (8) comprenant une poutre (18) relié à des moyens de maintien (30, 36, 44) des éléments de forme allongée à l'extérieur et le long de la poutre, et -un capot (54) dont des parois (56, 58) recouvrent les moyens de maintien du châssis, et sont engagées avec la poutre, de manière à former la cavité interne où s'étendent les éléments de forme allongée, des moyens d'amortissement (68) étant agencés entre les moyens de maintien (30, 36, 44) des éléments de forme allongée(20), et les parois longitudinales (56, 58), de manière à réduire et amortir les mouvements des moyens de maintien dans la cavité (62).
Abstract:
A gas turbine fan or compressor abradable liner comprises an abradable polymeric matrix having a plurality of dispersed dry lubricant particulates. The dry lubricant particulates reduce heat caused by friction and which may affect either the material of the blade or the casing.
Abstract:
Electric submersible well pumping systems operable in well temperatures of above about 180°C (356°F) utilize high temperature electrical insulation. The electrical insulation includes E-base polyimide films or perfluoropolymer TE films on various components. The insulation films are employed around magnet wires that are threaded through slots in the stator. Slot insulation of E-base polyimide or perfluoropolymer TE surrounds the magnet wires in the stator slots. Sheets of E-base polyimide or perfluoropolymer TE film extend around and between phase loops of the magnet wire at the lower end of the stator. The magnet wires in the stator have lead portions that extend The motor contains a PAO oil having additives to dissipate acid generated by epoxy used in the motor.
Abstract:
A solid rocket motor includes a propellant grain and a barrier shielding at least a portion of the grain. The barrier is impermeable to water, oxygen, nitrogen, and volatile solid propellant species.