Fail safe valve for an air inleakage monitoring system in a stea

Details Fail safe valve for an air inleakage monitoring system in a stea Fail safe valve for an air inleakage monitoring system in a stea

1988-08-17

1989-06-20

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Proportional

G01F 500

Patent

active

048400637

ABSTRACT:
A normally closed valve system for sealing off low pressure gas flow through a pipe. The valve system comprises an inflatable bladder which blocks relatively low pressure flow through the pipe and permits relatively high pressure flow through the pipe. In one form, the invention comprises a fail-safe bypass monitor and method for measuring air inleakage in a steam turbine. The monitor selectably bypasses low volumetric flow rates from a pipe for measurement and admits flow through the pipe whenever the flow rate exceeds a predetermined value.

REFERENCES:
patent: 851709 (1907-04-01), Thompson
patent: 3803912 (1974-09-01), Ohno
patent: 4135550 (1979-01-01), Andersson
patent: 4178938 (1979-12-01), Au
patent: 4340079 (1982-07-01), Smith
patent: 4498497 (1985-02-01), Rosaen
patent: 4522116 (1985-06-01), Tartaglino

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