Prime-mover dynamo plants – Turbogenerators
Patent
1989-08-21
1991-09-03
Pellinen, A. D.
Prime-mover dynamo plants
Turbogenerators
415163, F01D 2520, H02K 718
Patent
active
050457110
ABSTRACT:
A turboexpander-generator system employing a housing with a rotatably mounted shaft oriented vertically with a turboexpander associated with the upper end of the housing and shaft, a generator associated with the housing and shaft below the turboexpander and a lubricant pump located at the lower end of the housing and shaft. The lubricant pump controls an actuator valve which controls the variable inlet nozzles to the turboexpander. Thus, a speed control system is achieved through use of the lubricant pump pressure. A seal gas separator is provided with two ports located in the turboexpander exducer at positions of different pressure. High pressure is used to provide a seal between the bearings and the turboexpander. Low pressure is directed to the area of the sump of the pump to enhance continuous lubricant return. A self-priming mechanism causes a reservoir to be charged during pump operation with return of the lubricant to the sump when the pump is off.
REFERENCES:
patent: 2804021 (1957-08-01), Swearingen
patent: 3232581 (1966-02-01), Swearingen
patent: 3495921 (1970-02-01), Swearingen
patent: 3898016 (1975-08-01), Kanger
patent: 3920351 (1975-11-01), Grubb
patent: 4188546 (1980-02-01), Kossler
patent: 4362020 (1982-12-01), Meacher et al.
patent: 4446377 (1984-05-01), Kure-Jensen et al.
Duncanson Jr. W. E.
Pellinen A. D.
Rotoflow Corporation
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