US2538701A - Gas turbine plant heat exchanger cleaning apparatus - Google Patents

Gas turbine plant heat exchanger cleaning apparatus Download PDF

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Publication number
US2538701A
US2538701A US674001A US67400146A US2538701A US 2538701 A US2538701 A US 2538701A US 674001 A US674001 A US 674001A US 67400146 A US67400146 A US 67400146A US 2538701 A US2538701 A US 2538701A
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United States
Prior art keywords
heat exchanger
air
tubes
gas turbine
turbine plant
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.)
Expired - Lifetime
Application number
US674001A
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English (en)
Inventor
Meyer Adolf
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.)
BBC Brown Boveri AG Germany
Original Assignee
Bbc Brown Boveri & Cie
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 Bbc Brown Boveri & Cie filed Critical Bbc Brown Boveri & Cie
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Publication of US2538701A publication Critical patent/US2538701A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/08—Heating air supply before combustion, e.g. by exhaust gases

Definitions

  • waste combustion gas which is to be cooled or.
  • heat conducting wall becomes coated with dust and soot and has to be cleaned in order to avoid the heat insulating efiect of the deposit and maintain the efiiciency of heat transfer.
  • An object of the present invention is to provide a heat exchanger and a method of operation by which such a heat exchanger readily may be cleaned.
  • a further object of the invention is to provide a heat exchanger and a method of operation by means of which the heat exchanger is cleaned during continuous operation by means of the air supply to the heat exchanger.
  • the invention is applicable to an heat exchanger such as that of a gas turbine plant in which the pressure of the gas, such as air, being heated is greater than the pressure of the gas such as combustion gas being cooled.
  • the invention resides in the provision of means whereby a portion of the air delivered under pressure to the heat exchanger may be discharged against the surfaces to be cleaned.
  • the heat exchanger consists of heat exchange tubes extending across a conduit or chamber through which the hot combustion ga passes in contact with the outside surfaces of the tubes and air passes through the tubes
  • one or more of the heat exchange tubes, or a tube or tubes, specially provided and positioned with respect to the heat exchange tubes to be cleaned may have bore holes for discharging air forcibly against the tubes to be cleaned.
  • the heat exchange tubes need not be cleaned continuously and since the air used for cleaning is taken from the supply of air to the gas turbine plant it is preferable to provide means for controlling the supply of air to the jet tube which may be operated intermittently and in the case of a plurality of jet tubes distributed within a bank of heat exchange tubes it is preferable to provide means for controlling the supply of air to the jet tubes individually so that only one or only a small proportion of the jet tubes are supplied with air at one time.
  • the means for controlling the supply 2 of air to the jet tube preferably is so positioned that air entering the heat exchanger is delivered directly to the jet tube before traversing the heat exchange tubes so as to avoid the loss of heat incident to first heating the air by heat exchange and then discharging it through the jet tube.
  • Fig. 1 is a vertical section of a heat exchanger with means for controlling the supply of air to the cold end only of the jet tube,
  • Fig. 2 is a vertical section of a heat exchanger with means for controlling the supply of air to both ends of the jet tube,
  • Fig. 3 is an enlarged section of the air supply control valve and Fig. 4 is an elevation, partly in section, of a gas turbine plant employing a heat exchanger cleaner and surge reducer.
  • walls I and 2 are the walls of the conduit or chamber through which the hot combustion gas passes and into which the heat exchange tubes are secured, 3 and 4 are inlet and outlet headers for the air which passes through the heat exchange tubes 5, and 6 is a jet tube which, as appears in Fig. 3, is provided with jet openings 1, suitably distributed to discharge jets of air against the surrounding tubes 5. It will be appreciated that a plurality of jet tubes 6 may be distributed among the heat exchange tubes 5 and that the heat exchange tubes may be arranged to take the best advantage of the cleaning action of the jets. In the embodiment illustrated in Fig.
  • valve plate 9 carried on the end of screw threaded spindle H! which works through screw threaded plug II in the wall of the header 3.
  • a hand wheel I2 On the outer end of the spindle I l is a hand wheel I2 by means of which the valve plate 9 can be moved to open and closed positions.
  • means may be provided for operating a single valve periodically or for operating a plurality of valves periodically and in sequence.
  • the jet tube 9 is controlled by valves at both ends, either or both of which may be opened to admit air.
  • the jet tubes may have an additional function or utility in a gas turbine plant in that they may serve to prevent the so-called pumping or sur ing of the blast. Pumping generally occurs when the air supply is low and it is customar to provide an automatic blow out valve to prevent pumping.
  • the jet tubes may serve as a substitute for the blow out valve and the valves controlling the supply of air to the jet tubes may be made to open automatically to prevent pumping. Thus the cleaning of the heat exchange tubes occurs automatically at each occurrence of a small air blast supply to the combustion chamber or burner of the gas turbine plant.
  • Fig. 4 shows a heat exchanger installed in a gas turbine plant of a common type having a combustion chamber It, a gas turbine It, a compressor I5, and a heat exchanger l6.
  • Air drawn V admission opening of the tube 6 with the valve in by the compressor I5 at H, is compressed and forced through header I 8, provided with metering nozzle i9, and through the tubes 5 or the heat exchanger it into the combustion chamber II where it serves in part to support fuel combustion, and in part to mix with and cool the produced combustion gases as they leave the combustion chamber.
  • the mixed gases flow through pipe 2
  • the hot gases passing around the tubes give up a part of their heat to the compressed air flowing through the tubes en route .to the combustion chamber, thus increasing the thermal efliciency of the plant in customary fashion.
  • conduits 23 and 24 respectively lead to the two sides of a piston 21 which is reciprocable in a closed cylinder 25, but normally maintained in' position, as shown, by the pressure of a spring 28.
  • the piston 2'! is Joined by a connecting rod 28 to a valve plate 29 identical with the valve plate 9 controlled by a manually operable valve 7 hand side of the piston, the pressure amine left finally prevails and moves the piston 21 to the right so that tube 8 is opened and the compressed air, not yet heated up by the hot exhaust gases of turbine IQ, escapes through the holes 1 and cleans the adjacent tubes 5 on the outside removing the soot, etc. or the exhaust gases.
  • the pressure at the right of the piston 2'! prevails over the opposed pressure and closes the plate 29.
  • the valve 9 at the left end of the tube 5 can be opened or closed at will, but obviously will normallybe closed.
  • Means for cleaning the heat exchanger and simultaneously preventing pumping of the gas supply in a gas turbine plant having a compressor said means comprising a heat exchanger having at least one normally inactive tube and a plurality of normally active tubes through the latter of which said gas passes to receive heat by indirect exchange from hot combustion products sweeping against the outside of said tubes, the

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Incineration Of Waste (AREA)
US674001A 1945-06-21 1946-06-03 Gas turbine plant heat exchanger cleaning apparatus Expired - Lifetime US2538701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2538701X 1945-06-21

Publications (1)

Publication Number Publication Date
US2538701A true US2538701A (en) 1951-01-16

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ID=4569960

Family Applications (1)

Application Number Title Priority Date Filing Date
US674001A Expired - Lifetime US2538701A (en) 1945-06-21 1946-06-03 Gas turbine plant heat exchanger cleaning apparatus

Country Status (2)

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US (1) US2538701A (de)
DE (1) DE844995C (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634164A (en) * 1946-11-15 1953-04-07 Robert W Drake Heat exchanger cleaning device
US2745639A (en) * 1953-07-15 1956-05-15 Sun Oil Co Heat exchanger
US2766968A (en) * 1952-08-28 1956-10-16 Foster Wheeler Corp Means for selectively cleaning heat exchange tubes
DE1109723B (de) * 1957-05-21 1961-06-29 Andre Huet Senkrecht angeordneter Waermetauscher ohne Rohrplatten
US3416599A (en) * 1965-09-23 1968-12-17 Steinmueller Gmbh L & C Branch current heat exchange with injection cooler
US6032459A (en) * 1998-06-15 2000-03-07 Alliedsignal, Inc. Turbine exhaust cooling in a microturbine power generating system
US20130285266A1 (en) * 2012-04-30 2013-10-31 Roger Scott Telvick Apparatus for recovering process exhaust energy

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE961629C (de) * 1952-12-31 1957-04-11 Parsons C A & Co Ltd Waermeaustauscher
DE3601572A1 (de) * 1986-01-21 1987-08-06 Steine & Erden Gmbh Vorrichtung zum rekuperativen vorwaermen von einem kalkschachtofen o. dgl. zugefuehrter luft
DE4430338C1 (de) * 1994-08-26 1995-05-04 Gea Luftkuehler Happel Gmbh Vorrichtung zur Reinigung von Wärmeaustauschern
DE19933715A1 (de) * 1999-07-19 2001-01-25 Volkswagen Ag Rohrbündel-Verdampfer

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1764189A (en) * 1923-09-17 1930-06-17 Foster Wheeler Corp Apparatus for cleaning economizer tubes
US2028250A (en) * 1936-01-21 Soot blower
US2109855A (en) * 1936-03-16 1938-03-01 Vulcan Soot Blower Corp Soot blowing apparatus for air preheaters
US2200668A (en) * 1939-11-27 1940-05-14 Carlson Albert Method of and means for cleaning the checker chambers of open hearth furnaces and the like
CH212269A (de) * 1939-06-29 1940-11-15 Sulzer Ag Gasturbinenanlage.
US2302513A (en) * 1940-12-28 1942-11-17 Standard Oil Dev Co Heat exchanger and method of operation
US2403388A (en) * 1944-04-26 1946-07-02 Gen Electric Gas turbine power plant
US2418911A (en) * 1944-04-28 1947-04-15 Elliott Co Gas turbine cycle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2028250A (en) * 1936-01-21 Soot blower
US1764189A (en) * 1923-09-17 1930-06-17 Foster Wheeler Corp Apparatus for cleaning economizer tubes
US2109855A (en) * 1936-03-16 1938-03-01 Vulcan Soot Blower Corp Soot blowing apparatus for air preheaters
CH212269A (de) * 1939-06-29 1940-11-15 Sulzer Ag Gasturbinenanlage.
US2200668A (en) * 1939-11-27 1940-05-14 Carlson Albert Method of and means for cleaning the checker chambers of open hearth furnaces and the like
US2302513A (en) * 1940-12-28 1942-11-17 Standard Oil Dev Co Heat exchanger and method of operation
US2403388A (en) * 1944-04-26 1946-07-02 Gen Electric Gas turbine power plant
US2418911A (en) * 1944-04-28 1947-04-15 Elliott Co Gas turbine cycle

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634164A (en) * 1946-11-15 1953-04-07 Robert W Drake Heat exchanger cleaning device
US2766968A (en) * 1952-08-28 1956-10-16 Foster Wheeler Corp Means for selectively cleaning heat exchange tubes
US2745639A (en) * 1953-07-15 1956-05-15 Sun Oil Co Heat exchanger
DE1109723B (de) * 1957-05-21 1961-06-29 Andre Huet Senkrecht angeordneter Waermetauscher ohne Rohrplatten
US3416599A (en) * 1965-09-23 1968-12-17 Steinmueller Gmbh L & C Branch current heat exchange with injection cooler
US6032459A (en) * 1998-06-15 2000-03-07 Alliedsignal, Inc. Turbine exhaust cooling in a microturbine power generating system
US20130285266A1 (en) * 2012-04-30 2013-10-31 Roger Scott Telvick Apparatus for recovering process exhaust energy

Also Published As

Publication number Publication date
DE844995C (de) 1952-07-28

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