US3724967A - Moisture removal device for a steam turbine - Google Patents

Moisture removal device for a steam turbine Download PDF

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Publication number
US3724967A
US3724967A US00193345A US3724967DA US3724967A US 3724967 A US3724967 A US 3724967A US 00193345 A US00193345 A US 00193345A US 3724967D A US3724967D A US 3724967DA US 3724967 A US3724967 A US 3724967A
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United States
Prior art keywords
steam
chamber
turbine
port
blades
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
US00193345A
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English (en)
Inventor
F Fischer
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.)
Westinghouse Electric Corp
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Westinghouse Electric Corp
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Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
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Publication of US3724967A publication Critical patent/US3724967A/en
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Classifications

    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/32—Collecting of condensation water; Drainage ; Removing solid particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y10S415/914—Device to control boundary layer

Definitions

  • ABSTRACT A row of stationary blades of the steam turbine having interconnecting cavities in the base portions thereof to form an annular chamber which cooperates with inlet and outlet ports disposed adjacent the trailing edges of these blades and adjacent the casing and rotor respectively to remove water and steam from the stationary blades, to separate the water and steam, and to direct the steam toward an adjacent row of rotating blades and the water to a drain.
  • an annular array of circumferentially spaced rotatable blades 7 fastened to the rotor 3 an annular array of circumferentially spaced stationary blades or nozzles 9 fastened to the casing and a device 11 disposed in the stationary blades 9 for removing water and steam from the motive steam as the water passes over the stationary blades, separating the steam from the water, returning the steam to perform additional work on the rotating blades 7 and directing the water to a drain 12.
  • the device 11 comprises an inlet or first port 17 disposed adjacent the casing 5 and trailing edge 15 of the stationary blades 9, an outlet or second port 19 disposed adjacent the rotor 3 and trailing edge 15 of the stationary blade 9, and a chamber 21 ing edge on the rotating blades is expensive and may and the stationary blades .will increase the velocity of the water droplets and reduce the impact velocity of the water droplets as they impinge on the rotating blades to reduce erosion. However, this increases the turbine length, weight, and cost.
  • a turbine operated by motive steam when made in accordance withthis invention, has a rotor, a casing encircling the rotor, an annular array of circumferentially spaced rotatable blades, an annular array of 'circumferentially spaced stationary blades, a condensate drain and a device disposed in the stationary blades for removing water and steam from the motive placed in communication with the ports 17 and 19 by steam, separating the steam and water, returning the steam to perform additional work on the rotating blades, and directing the water to the drain.
  • FIGS. and 2 show a steam turbine 1 having a rotor 3, a casing 5 respectively,
  • the ducts 23 and 25 terminate in the chamber 21' and have short nozzles 27 and 29, respectively, which extend into the chamber 21 to prevent reentrainment of the water and steam which separate due to a reduction in the velocity of the mixture entering the chamber 21.
  • the annular chamber 21 is formed from interconriecting, registering cavities 29 in the base portions of the stationary blades 9. If required, peripheral seals or gaskets may be disposed between adjacent base portions to form a seal around the cavity to produce the annular sealed chamber 21.
  • FIG. 2 shows a modification, wherein the annular chamber 21 has an outer compartment 31 and an inner compartment 33.
  • the inlet port 17 is brought into direct communication with the outer compartment 31 by the inlet duct 23 and the outlet port 19 is brought in direct communication with the inner compartment 33 by the outlet duct 25.
  • Walls 35, separating the inner compartment 33 from the outer compartment 31, have a plurality of opening 37, which allow steam to flow freely from the outer to the inner compartment.
  • the outer compartment 31 has a larger volume than the inner compartment 33, so as to allow the steam and water mixture entering through the inlet ports 17 and ducts 23 to slow down so that the water separates from the steam.
  • the water then flows by gravity to the drain 12, while the steam flows into the inner compartment 33 and out the outlet ducts 25 and ports 19.
  • the inlet and outlet ducts 17 and 19 may be disposed to cooperate with the inner and outer compartments 31 and 33 to foster centrifugal separation of the mixture of steam and water and thereby effectuate more complete separation.
  • the stationary blades with cooperatively associated chambers, ports, and ducts, hereinbefore described advantageously extract some steam with the moisture, which greatly enhances the effectiveness of the moisture removal from the blades and by separating the moisture from the steam and returning the steam to the main steam flow to perform additional work on the downstream rotating blade provides optimum moisture removal with a minimum loss of motive steam.
  • a turbine operated by motive steam having a rotor, a casing encircling said rotor, an annular array of circumferentially spaced rotatable blades, an annular array of circumferentially spaced stationary blades, a condensate drain, and means disposed in said stationary blades for removing water and steam from the motive steam, separating the steam and water, returning the steam to perform additional work on the rotatable blades, and directing the water to the drain.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
US00193345A 1971-10-28 1971-10-28 Moisture removal device for a steam turbine Expired - Lifetime US3724967A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19334571A 1971-10-28 1971-10-28

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US3724967A true US3724967A (en) 1973-04-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00193345A Expired - Lifetime US3724967A (en) 1971-10-28 1971-10-28 Moisture removal device for a steam turbine

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US (1) US3724967A (it)
IT (1) IT970011B (it)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274804A (en) * 1977-07-15 1981-06-23 Mitsui Engineering And Shipbuilding Co., Ltd. Axial-flow turbine
EP1630362A1 (de) * 2004-08-23 2006-03-01 Siemens Aktiengesellschaft Dampfturbine mit Anzapfung durch hohle Leitschaufel
US20130149106A1 (en) * 2011-12-12 2013-06-13 Nuovo Pignone S.P.A Steam turbine, blade, and method
CN104061023A (zh) * 2014-06-23 2014-09-24 中国船舶重工集团公司第七�三研究所 一种船用汽轮机除湿级装置
JP2018115633A (ja) * 2017-01-20 2018-07-26 三菱日立パワーシステムズ株式会社 蒸気タービン
JP2018127984A (ja) * 2017-02-10 2018-08-16 三菱日立パワーシステムズ株式会社 蒸気タービン
EP3591175A1 (de) * 2018-07-02 2020-01-08 Siemens Aktiengesellschaft Ausgangöffnung einer dampfturbine

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US741776A (en) * 1902-12-13 1903-10-20 Gen Electric Means for improving the efficiency of turbines.
GB316381A (en) * 1928-06-11 1929-08-01 Karl Baumann Improvements relating to elastic fluid turbines
GB343407A (en) * 1929-06-05 1931-02-19 Oerlikon Maschf Device for the removal of liquid from the flow of propellant in a steam turbine
US1829674A (en) * 1928-12-08 1931-10-27 Gen Electric Elastic fluid turbine and the like
US2111878A (en) * 1935-07-02 1938-03-22 Hermannus Van Tongeren Means for draining moisture from steam in steam turbines
US2291828A (en) * 1940-05-04 1942-08-04 Westinghouse Electric & Mfg Co Turbine blading
US2332322A (en) * 1940-11-16 1943-10-19 Gen Electric Elastic fluid turbine arrangement
US2362831A (en) * 1943-08-20 1944-11-14 Gen Electric Elastic fluid turbine
US2399009A (en) * 1944-07-25 1946-04-23 Gen Electric Elastic fluid turbine
GB1013835A (en) * 1961-11-02 1965-12-22 Licentia Gmbh Improvements in or relating to axial-flow turbines, compressors and exhausters
US3301529A (en) * 1964-05-12 1967-01-31 Merz & Mclellan Services Ltd Steam turbines

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US741776A (en) * 1902-12-13 1903-10-20 Gen Electric Means for improving the efficiency of turbines.
GB316381A (en) * 1928-06-11 1929-08-01 Karl Baumann Improvements relating to elastic fluid turbines
US1829674A (en) * 1928-12-08 1931-10-27 Gen Electric Elastic fluid turbine and the like
GB343407A (en) * 1929-06-05 1931-02-19 Oerlikon Maschf Device for the removal of liquid from the flow of propellant in a steam turbine
US2111878A (en) * 1935-07-02 1938-03-22 Hermannus Van Tongeren Means for draining moisture from steam in steam turbines
US2291828A (en) * 1940-05-04 1942-08-04 Westinghouse Electric & Mfg Co Turbine blading
US2332322A (en) * 1940-11-16 1943-10-19 Gen Electric Elastic fluid turbine arrangement
US2362831A (en) * 1943-08-20 1944-11-14 Gen Electric Elastic fluid turbine
US2399009A (en) * 1944-07-25 1946-04-23 Gen Electric Elastic fluid turbine
GB1013835A (en) * 1961-11-02 1965-12-22 Licentia Gmbh Improvements in or relating to axial-flow turbines, compressors and exhausters
US3301529A (en) * 1964-05-12 1967-01-31 Merz & Mclellan Services Ltd Steam turbines

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274804A (en) * 1977-07-15 1981-06-23 Mitsui Engineering And Shipbuilding Co., Ltd. Axial-flow turbine
EP1630362A1 (de) * 2004-08-23 2006-03-01 Siemens Aktiengesellschaft Dampfturbine mit Anzapfung durch hohle Leitschaufel
US20130149106A1 (en) * 2011-12-12 2013-06-13 Nuovo Pignone S.P.A Steam turbine, blade, and method
EP2604801A1 (en) * 2011-12-12 2013-06-19 Nuovo Pignone S.p.A. Brazed steam turbine guide vane module
RU2631852C2 (ru) * 2011-12-12 2017-09-26 Нуово Пиньоне С.п.А. Направляющий лопаточный венец для паровой турбины, многоступенчатая паровая турбина и способ изготовления лопаточного узла
CN104061023A (zh) * 2014-06-23 2014-09-24 中国船舶重工集团公司第七�三研究所 一种船用汽轮机除湿级装置
JP2018115633A (ja) * 2017-01-20 2018-07-26 三菱日立パワーシステムズ株式会社 蒸気タービン
US11028695B2 (en) * 2017-01-20 2021-06-08 Mitsubishi Power, Ltd. Steam turbine
JP2018127984A (ja) * 2017-02-10 2018-08-16 三菱日立パワーシステムズ株式会社 蒸気タービン
WO2018147013A1 (ja) * 2017-02-10 2018-08-16 三菱日立パワーシステムズ株式会社 蒸気タービン
US11492920B2 (en) 2017-02-10 2022-11-08 Mitsubishi Heavy Industries, Ltd. Steam turbine
EP3591175A1 (de) * 2018-07-02 2020-01-08 Siemens Aktiengesellschaft Ausgangöffnung einer dampfturbine

Also Published As

Publication number Publication date
IT970011B (it) 1974-04-10

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