Expander lubrication in vapour power systems

Details Expander lubrication in vapour power systems Expander lubrication in vapour power systems

F - Mech Eng,Light,Heat,Weapons

01

K

F01K 25/08 (2006.01) F16N 15/00 (2006.01)

Patent

CA 2610762

A vapour power generating system for generating power by using heat from a source of heat. The system has a closed circuit for a working fluid, and includes a heat exchanger assembly (1) for heating the fluid under pressure with heat from the source, a separator (8) for separating the vapour phase of the heated fluid from the liquid phase thereof, an expander (14) for expanding the vapour to generate power, a condenser (17) for condensing the outlet fluid from the expander (14), a feed pump (F) for returning condensed fluid from the condenser (17) to the heater and a return path for returning the liquid phase from the separator to the heater. The liquid phase of the working fluid contains a lubricant which lubricant is soluble or miscible in the liquid phase and a bearing supply path (21) is arranged to deliver liquid phase pressurised by the feed pump (F) to at least one bearing for a rotary element of the expander.

Système de génération de vapeur utilisant la chaleur provenant d'une source de chaleur. Il présente un circuit fermé pour un fluide de travail et comprend un ensemble échangeur de chaleur (1) destiné à chauffer le fluide sous pression avec la chaleur provenant de la source, un séparateur (8) destiné à séparer la phase vapeur du fluide chauffé, un expanseur (14) destiné à l'expansion de la vapeur afin de générer de la puissance, un condensateur (17) pour fluide de sorite provenant de l'expanseur (14), une pompe d'alimentation (F) de retour du fluide condensé en provenance du condenseur (17) vers l'élément chauffant et un trajet de retour du liquide de phase provenant du séparateur en direction de l'élément chauffant. La phase liquide du fluide de travail contient un lubrifiant soluble ou miscible dans la phase liquide et un trajet de support (21) administre la phase liquide pressurisée au moyen de la pompe F vers au moins un pallier d'un élément rotatif de l'expanseur.

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