公开(公告)号：DE2328967A1

公开(公告)日：1973-12-20

申请号：DE2328967

申请日：1973-06-07

Applicant: WEIR PUMPS LTD

Inventor： RANDELL FORREST THOMSON

IPC: G05D13/62 ,  F01D21/00 ,  F04B17/00 ,  F04B49/06 ,  F04D15/00 ,  G08B5/00 ,  F01B25/00

Abstract: In a steam turbine driven pump installation, the steam flow to the turbine is controlled by a combined stop and throttle valve which includes a power operated actuator so as to vary the output of the pump, and a speed feed-back control is provided for the turbine comprising an indicator issuing a signal corresponding to the turbine speed, and a comparator comparing the speed signal with a desired value and delivering a control signal based on the comparison to a servo-device of the valve actuator for adjustment of the valve whereby turbine speed may be maintained constant. Additionally the installation includes an emergency control respondent to operating conditions in the installation e.g. turbine overspeed, oil pressure etc., the emergency control including a switch in the power supply to the valve actuator whereby in the event of the operating condition being unsatisfactory the switch is opened to close the steam valve.

公开(公告)号：AU4098372A

公开(公告)日：1973-12-20

申请号：AU4098372

申请日：1972-04-10

Applicant: WEIR PUMPS LTD

Inventor： RANDELL FORREST THOMSON

IPC: F04D29/58 ,  F04D29/66 ,  F22D11/02

公开(公告)号：DE2226921A1

公开(公告)日：1973-01-04

申请号：DE2226921

申请日：1972-06-02

Applicant: WEIR PUMPS LTD

Inventor： RANDELL FORREST THOMSON

IPC: F01D25/18 ,  F01D25/20 ,  F04D29/04 ,  F04D29/041 ,  F04D29/047 ,  F04D29/06 ,  F16N7/40 ,  F16N13/20 ,  F16N39/02 ,  F16N7/38

Abstract: Rotodynamic apparatus includes a pair of spaced upper and lower rotodynamic machines such as for example an upper pump and a lower drive turbine for the pump, and upright shafting drivingly interconnecting the machines.