CA2074663A1 - Steam purity monitor - Google Patents

Steam purity monitor

Info

Publication number
CA2074663A1
CA2074663A1 CA002074663A CA2074663A CA2074663A1 CA 2074663 A1 CA2074663 A1 CA 2074663A1 CA 002074663 A CA002074663 A CA 002074663A CA 2074663 A CA2074663 A CA 2074663A CA 2074663 A1 CA2074663 A1 CA 2074663A1
Authority
CA
Canada
Prior art keywords
temperature
sensor
conductance
sodium hydroxide
steam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002074663A
Other languages
French (fr)
Other versions
CA2074663C (en
Inventor
James Christopher Bellows
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Energy Inc
Original Assignee
James Christopher Bellows
Westinghouse Electric Corporation
Cbs Corporation
Siemens Westinghouse Power Corporation
Siemens Power Generation, Inc.
Siemens Energy, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by James Christopher Bellows, Westinghouse Electric Corporation, Cbs Corporation, Siemens Westinghouse Power Corporation, Siemens Power Generation, Inc., Siemens Energy, Inc. filed Critical James Christopher Bellows
Publication of CA2074663A1 publication Critical patent/CA2074663A1/en
Application granted granted Critical
Publication of CA2074663C publication Critical patent/CA2074663C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B21/00—Systems involving sampling of the variable controlled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/02—Arrangement of sensing elements
    • F01D17/08—Arrangement of sensing elements responsive to condition of working-fluid, e.g. pressure

Abstract

A steam purity monitor (10) detects the presence of sodium hydroxide and sodium chloride in a steam turbine (12). In the steam purity monitor (10), a control unit (18) is connected to a sensor unit (14) in the steam turbine (12) which has a conductance sensor (30), pressure sensor (34) and temperature sensor (32) to measure conductance, pressure and temperature in the steam turbine (12).
A heating coil (40) is further provided to vary the temperature of the sensor unit (14). If conductance is detected by the conductance sensor (30), then the temperature is obtained from the temperature sensor (32) and compared by the control unit (18) to a saturation temperature calculated based on pressure readings from the pressure (34). If the temperature exceeds the saturation temperature by a predetermined amount, the control unit (18) indicates the presence of sodium hydroxide on a display unit (29). However, if the temperature does not exceed the saturation temperature by the predetermined amount, then either sodium hydroxide or sodium chloride could be present. In this case, the steam purity monitor (10) is heated by the heating coil (40) to a predetermined superheat level at which only sodium hydroxide would exist in a liquid solution. After heating, if conductance is no longer detected by the conductance sensor (30), sodium chloride is indicated. If conductance continues to be detected after heating, then sodium hydroxide is indicated.
CA002074663A 1991-07-26 1992-07-24 Steam purity monitor Expired - Lifetime CA2074663C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/736,363 US5353628A (en) 1991-07-26 1991-07-26 Steam purity monitor
US736,363 1991-07-26

Publications (2)

Publication Number Publication Date
CA2074663A1 true CA2074663A1 (en) 1993-01-27
CA2074663C CA2074663C (en) 2003-05-20

Family

ID=24959598

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002074663A Expired - Lifetime CA2074663C (en) 1991-07-26 1992-07-24 Steam purity monitor

Country Status (3)

Country Link
US (1) US5353628A (en)
KR (1) KR100243549B1 (en)
CA (1) CA2074663C (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0652435A3 (en) * 1993-11-04 1996-11-20 Siemens Ag Sensor for determining the gradient of a concentration.
JP3107516B2 (en) * 1996-05-01 2000-11-13 株式会社日立製作所 Composite sensor
ES2120377B1 (en) * 1996-09-02 1999-05-01 Navarro Vicente Blazquez AUTONOMOUS ELECTRONIC MONITORING SYSTEM FOR PURGERS, VALVES AND FACILITIES IN REAL TIME.
ES2127122B1 (en) 1996-09-02 1999-12-16 Blaquez Navarro Vicente AUTONOMOUS ELECTRONIC IMPROVED MONITORING SYSTEM FOR PURGERS, VALVES AND INSTALLATIONS IN REAL TIME.
US5832421A (en) * 1996-12-13 1998-11-03 Siemens Corporate Research, Inc. Method for blade temperature estimation in a steam turbine
US5838588A (en) * 1996-12-13 1998-11-17 Siemens Corporate Research, Inc. Graphical user interface system for steam turbine operating conditions
US6015842A (en) * 1997-08-07 2000-01-18 Alcon Laboratories, Inc. Method of preparing foldable hydrophilic ophthalmic device materials
ES2133240B1 (en) * 1997-10-03 2000-03-16 Blazquez Navarro Vicente AUTONOMOUS GLOBAL SYSTEM PERFECTED FOR REMOTE SURVEILLANCE OF BLEEDERS, VALVES AND REAL-TIME FACILITIES.
US7689515B2 (en) * 2004-12-10 2010-03-30 Siemens Energy, Inc. Power plant life assessment
EP1775431A1 (en) * 2005-10-12 2007-04-18 Siemens Aktiengesellschaft Method for warming-up a steam turbine
CN102094711A (en) * 2011-01-04 2011-06-15 北京航空航天大学 Device for measuring total pressure and total temperature of air flow at inlet of aeromotor
US8800373B2 (en) * 2011-02-14 2014-08-12 Rosemount Inc. Acoustic transducer assembly for a pressure vessel
US20140083176A1 (en) * 2012-09-27 2014-03-27 William E. Rhoden Turbomachine including a pressure sensing system
US20140137564A1 (en) * 2012-11-19 2014-05-22 General Electric Company Mitigation of Hot Corrosion in Steam Injected Gas Turbines
US9366153B2 (en) 2012-11-30 2016-06-14 General Electric Company Method and system for steam purity monitoring through use of high electron mobility transistors

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2595490A (en) * 1945-01-04 1952-05-06 Wyandotte Chemicals Corp Prevention of siliceous deposition from steam
CH561394A5 (en) * 1973-08-24 1975-04-30 Bbc Brown Boveri & Cie
US4386498A (en) * 1980-10-15 1983-06-07 Westinghouse Electric Corp. Method and apparatus for preventing the deposition of corrosive salts on rotor blades of steam turbines
US4455530A (en) * 1982-03-30 1984-06-19 Westinghouse Electric Corp. Conductivity sensor for use in steam turbines
US4739492A (en) * 1985-02-21 1988-04-19 Cochran Michael J Dialysis machine which verifies operating parameters
US4679399A (en) * 1985-09-13 1987-07-14 Elliott Turbomachinery Co., Inc. Protection system for steam turbines including a superheat monitor
JPS6453146A (en) * 1987-01-09 1989-03-01 Hitachi Ltd Method and instrument for measuring electrical conductivity of solution and water quality control method
US4883566A (en) * 1988-06-07 1989-11-28 Betz Laboratories, Inc. Electrode assembly for in-situ measurement of electrolytic conductivity of boiler water

Also Published As

Publication number Publication date
CA2074663C (en) 2003-05-20
KR930002909A (en) 1993-02-23
US5353628A (en) 1994-10-11
KR100243549B1 (en) 2000-02-01

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry