US 4,414,858 AGranted

Steam turbine fluid sampling apparatus

AssigneeWestinghouse Electric Corp.

InventorsSteven H. Peterson, David F. Pensenstadler

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Abstract

Apparatus for sampling water or steam condensate in a steam turbine system includes a plurality of lines connected to receive fluid samples from various points in the system for delivering a selected sample to an analyzer through a valving arrangement. The valving arrangement and analyzer are under control of a microprocessor which has a set of stored instructions governing the random selection of which lines are to be selected for sampling. The selection may be interrupted as a result of the analysis whereas the result of abnormal fluid conditions in a particular line is determined by sensors provided in each line. The valves are of the type which provide for continuous fluid flow therethrough so that a fluid sample if selected will be provided to the analyzer and all those not selected will be returned back to the steam turbine system for reuse.

Claims7

Dependent claims

Apparatus for sampling fluids from a plurality of sampling points in a steam turbine system having a steam supply, a steam turbine arrangement driven thereby, a condenser for condensing exhaust steam from said turbine arrangement and a recirculating fluid path, for returning condensed steam back to said supply, comprising:

(A) a valve arrangement having a plurality of valves each of which may be activated in response to an applied control signal;
(B) a plurality of fluid sample lines connected between selected points in said steam turbine system and said valve arrangement;
(C) analyzing means for analyzing selected fluid samples passed by said valving arrangement;
(D) a common drain line connected to supply fluid back to said steam turbine system;
(E) computer means operable to supply said applied control signals control signals to activate selected ones of said valves in accordance with a set of stored instructions, so as to place a single one of said fluid sample lines in fluid communication with said analyzing means;
(F) said computer means and valve arrangement being such that all non-selected fluid sample lines are in continuous fluid communication with said common drain line so as to return fluid in said sample lines back to said steam turbine system from which it came, for reuse thereby.

3 more elements

Dependencies are inferred from the claim text.