EP0520711A1 - Wasserabscheider für Turbinenzwischenstufendampffluss - Google Patents

Wasserabscheider für Turbinenzwischenstufendampffluss Download PDF

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Publication number
EP0520711A1
EP0520711A1 EP92305684A EP92305684A EP0520711A1 EP 0520711 A1 EP0520711 A1 EP 0520711A1 EP 92305684 A EP92305684 A EP 92305684A EP 92305684 A EP92305684 A EP 92305684A EP 0520711 A1 EP0520711 A1 EP 0520711A1
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EP
European Patent Office
Prior art keywords
steam
moisture
flow
housing
high pressure
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.)
Withdrawn
Application number
EP92305684A
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English (en)
French (fr)
Inventor
James Charles Black
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of EP0520711A1 publication Critical patent/EP0520711A1/de
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/26—Steam-separating arrangements
    • F22B37/32—Steam-separating arrangements using centrifugal force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
    • F01K7/22—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type the turbines having inter-stage steam heating
    • F01K7/223—Inter-stage moisture separation

Definitions

  • the present invention relates to separation of moisture present in a steam flow exhausted from a high pressure turbine unit to a low pressure turbine unit, and, more particularly, to employement of a high velocity moisture separator for that purpose in place of heretofore used low velocity separation units which are of needless greater bulk and weight than the high velocity separator.
  • a moisture separator type which handles separation with high steam velocity is known, such for example, being used by Electricite De France in conjunction with moisture removal from steam to prevent system component erosion and corrosion related steam flow through these components.
  • moisture removal from a steam flow outletting a high pressure turbine and before it inlets a low pressure turbine effected by passing the flow through a high velocity moisture separator of a type wherein vanes at an entry location of the separator cause vortex-like swirling of the steam flow to produce centrifugal displacement of moisture therefom to impact against a separator inner housing wall along which it can carry to outlet from the housing at a skimmer slot formed in the housing wall.
  • the steam flow from which moisture has been separated before exiting the housing passes through straightening vanes which reorient the steam flow to a longitudinal straight line flow course.
  • a steam turbine system including a high pressure steam turbine having an inlet flow thereto of dry, high pressure steam drivingly rotating a rotor of the turbine the pressure of which steam reduces during passage through the turbine so that at outlet from the high pressure turbine the steam is at low pressure, there being a low pressure turbine which receives this low pressure steam for passage therethrough for driving the low pressure turbine rotor to extract further useful work from the steam, at least one moisture separator intervening the high pressure turbine steam outlet and an inlet to the low pressure turbine, the moisture separator being operable to remove substantially all of any moisture as may be present in steam flow between the high and low pressure turbines, the separator being a type that includes an elongated housing with an entry end and a discharge end, there being turning vanes proximal the housing entry end for vortexing an incoming straight line flow of moisture-containing steam to a swirling flow thereby to induce centrifugal force within the flow that displaces the moisture radially of the flow course to
  • At least one additional moisture separator can be embodied in line with the first to enhance the extend to which moisture separation is achieved.
  • the moisture separators will be such as to have a length/width ratio of about 2, and exhibit bulk and weight considerably less than in prior used low velocity separators.
  • the housing diameter can be about 6 feet, and the length about 12 feet.
  • the invention also provides methodology for passing an interstage steam flow through a housing to induce a vortex-like swirling flow therein to throw or impinge the moisture against the housing from thence to be carried along such inner wall and exit from the housing, the now "dry” steam being reoriented in its flow to straight line before leaving the housing.
  • FIGURE 1 is a fragmentary plan depiction of a prior art nuclear system turbine unit operating space, showing an arrangement of high and low pressure turbine units and the moisture separators used for separating moisture from the steam flowing as exhaust from the high pressure turbine to the low pressure turbine.
  • FIGURE 2 is a fragmentary end elevational view corresponding to the showing given in FIGURE 1 and illustrating the heavy concrete enclosures which must be provided in the operating space to house the moisture separators.
  • FIGURE 3 is a fragmentary elevational view of a moisture separator installation in a nuclear system provided in accordance with and for purposes as given by the present invention.
  • FIGURE 4 is a plan schematic depiction of the FIGURE 3 installation
  • FIGURE 5 is a longitudinal half-section of one of the high velocity moisture separators employed with the present invention, some parts being shown in full, the FIGURE depicting the manner in which the separator functions to remove moisture from steam.
  • the present invention is described herein in connection with a separation of moisture from a steam flow in the turbine system of a steam boiling water reactor nuclear plant for which use it is particularly suited in that it allows considerable weight reduction in respect of system moisture separators and hence, allows for gains in useful space in the operating enclosure as well as reductions in foundation loadings.
  • the invention is however, also applicable to moisture separation in any steam plant installation wherein an interstage "wet steam” flow between higher and lower pressure turbines should be “dried” by having the moisture removed therefrom before it enters the lower pressure turbine.
  • FIGURES 1 and 2 depict prior moisture separation arrangements and components used in a SBWR.
  • a high pressure turbine 10 and a low pressure turbine 12 aligned therewith are employed to extract heat energy from high pressure (1200 psig, for example) steam generated in a SBWR and convert it to useful energy in the form, e.g., of electrical power produced by an electrical generator 13 which is drivingly coupled to the turbine in known manner.
  • Steam is supplied to the high pressure turbine 10 by main 14, and gives up energy in turbine 10, the steam reducing in pressure and to the an extent that moisture can exist therein which moisture must be removed from the steam after it outlets the high pressure turbine and before it can enter the low pressure turbine where moisture if sufficiently large, could damage the low pressure rotor blades and the like.
  • steam outletting turbine 10 is conveyed from a turbine outlet trunk 17 through lines 16, 18 to respective ones of two moisture separators 20, 22, these separators being relatively large structures (about 11 feet diameter by 60 feet long) wherein low velocity steam flow attends moisture separation, the separators being chevron blade type separators.
  • the steam following moisture separation therefrom, is conveyed via lines 24 to the inlet trunk 19 of low pressure turbine 12.
  • the bulk of the separators 20, 22 requires that they be installed on the operating floor 26 where they occupy considerable space that otherwise could be used for different purposes. Further and because these devices are on the operating floor, they must be situated in heavy concrete shielding structure 28. Relocating required moisture separators to an extra-operating floor space is an important advantage of the invention as will be explained below.
  • the moisture separator type 30 employed in effecting removal of moisture from steam is a component heretofore used in France by Electricite de France.
  • the separator 30 includes an elongated generally cylindrically configured housing 32 flared or of bell-shape at its respective entry and discharge ends 34, 36. This flaring will be received in transition end pieces (not shown) which join the separator to steam conveying lines.
  • a turning vane assembly 38 comprised of a circle of vanes 40 fixed to long hub 42, these vanes being set such that an incoming straight line flow of steam is caused to undergo flow course deviation in the form of a vortex-like or cyclonic swirling path around the hub 42.
  • this changing geometry of the steam flow is the displacing or centrifugal thrusting of any moisture in the steam flow radially away from the steam flow main body and into impingement with the inner surface of the housing wall 44 whereat it is carried forward by flow momentum to a location downstream of vane assembly whereat it can access a skimmer slot 46 formed in housing wall 44 by means of which separated moisture can remove from the housing and be directed to a condensate recovery function via line 33, there being a sleeve 35 encircling the separator to confine the moisture outflow from the skimmer slot and direct it to the line 33.
  • a second vane assembly 50 Located on hub 42 adjacent downstream of the skimmer slot, is a second vane assembly 50 having a number of vanes 52 set in manner to convert or restore the swirling flow of the dry steam to a straight line or longitudinal flow in the housing so it can exit therefrom in that form and pass on to the low pressure turbine.
  • two separators 30a, 30b are associated with steam exhaust from one side of the high pressure turbine, and two additional ones 30c, 30d are associated with exhaust from an opposite side of that turbine 10, these pairing and associated steam lines being symmetrically arranged on opposite sides of the aligned axes of the turbine units.
  • the use of four moisture separators is exemplary of the numbers of such separators as are employed to replace the two used in the FIGURE 1 and 2 depicted system.
  • the high velocity separators 30 have the advantage of weight and size reduction below what is present in the separators 20,22 which is quite significant. Illustrative on this point is the nearly eight-fold reduction of volume of structure for the high velocity separators in the FIGURES 3 and 4 system as compared to those of the FIGURE 1 and 2 system.
  • they can be located below the operating floor as shown in FIGURE 3 eliminating shielding enclosure on the operating floor, and less weight is involved with corresponding lightening of foundation loading and reduction in supporting structure needed.
  • the separators 30 will have a length/width ratio of about 2.
  • the FIGURES 3, 4 separators have a diameter of 6 feet and a length of 12 feet.
  • FIGURES 3 and 4 arrangement is successful to effect removal of about 96% of the moisture contained in the interstage steam flow outletting the high pressure turbine.
EP92305684A 1991-06-24 1992-06-22 Wasserabscheider für Turbinenzwischenstufendampffluss Withdrawn EP0520711A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US71940391A 1991-06-24 1991-06-24
US719403 1991-06-24

Publications (1)

Publication Number Publication Date
EP0520711A1 true EP0520711A1 (de) 1992-12-30

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ID=24889934

Family Applications (1)

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EP92305684A Withdrawn EP0520711A1 (de) 1991-06-24 1992-06-22 Wasserabscheider für Turbinenzwischenstufendampffluss

Country Status (4)

Country Link
EP (1) EP0520711A1 (de)
JP (1) JPH05187205A (de)
CA (1) CA2068148A1 (de)
TW (1) TW199935B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9291062B2 (en) 2012-09-07 2016-03-22 General Electric Company Methods of forming blades and method for rendering a blade resistant to erosion
KR20170022908A (ko) * 2015-08-20 2017-03-02 제네럴 일렉트릭 테크놀러지 게엠베하 복합 사이클 발전소
CN111065213A (zh) * 2019-12-03 2020-04-24 福建闽威科技股份有限公司 一种便于使用者退膜的线路板加工用退膜结构

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005199158A (ja) * 2004-01-15 2005-07-28 Tlv Co Ltd 気液分離器
JP4636906B2 (ja) * 2004-03-18 2011-02-23 日立Ｇｅニュークリア・エナジー株式会社 原子力発電システム
DE102009050087B4 (de) * 2009-10-20 2011-12-22 Areva Np Gmbh Zyklonabscheider zur Phasenseparation eines Mehrphasen-Fluidstroms, Dampfturbinenanlage mit einem Zyklonabscheider und zugehöriges Betriebsverfahren
US9874230B2 (en) 2014-04-15 2018-01-23 Dresser-Rand Company Gas takeoff isolation system
JP6081543B1 (ja) * 2015-08-19 2017-02-15 三菱日立パワーシステムズ株式会社 蒸気タービンプラント
CA3033350C (en) 2016-08-09 2019-12-31 Rodney Allan Bratton In-line swirl vortex separator
CN107725125B (zh) * 2017-12-06 2023-12-08 中国船舶重工集团公司第七0三研究所 一种大功率饱和汽轮机的抽吸式强化除湿结构
CN111495040B (zh) * 2020-04-30 2021-03-16 西安交通大学 一种水平管道式气液分离装置和方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1912805A1 (de) * 1969-03-08 1970-09-03 Licentia Gmbh Einrichtung zur Wasserabscheidung
DE2312725A1 (de) * 1973-03-14 1974-09-26 Kraftwerk Union Ag Anordnung zur wasserabscheidung und zwischenueberhitzung von sattdampf
FR2553296A1 (fr) * 1983-10-13 1985-04-19 Stein Industrie Separateur d'un melange d'une vapeur et d'un liquide par centrifugation
FR2558741A1 (fr) * 1984-01-31 1985-08-02 Electricite De France Separateur de melanges par centrifugation
FR2630027A1 (fr) * 1988-04-19 1989-10-20 Stein Industrie Separateur de melanges par centrifugation
DE3832420A1 (de) * 1988-09-23 1990-04-05 Podolskij Masinostroitelnyj Z Fliehkraft-dampfabscheider
EP0377435A1 (de) * 1989-01-06 1990-07-11 STEIN INDUSTRIE Société Anonyme dite: Verfahren und Vorrichtung zum Erosions-Korrosionsschutz von Dampfleitungen aus dem Hochdruckteil einer Turbine
FR2644084A1 (fr) * 1984-01-31 1990-09-14 Electricite De France Separateur de melanges par centrifugation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5773808A (en) * 1980-10-24 1982-05-08 Toshiba Corp Steam drain discharging device
JPS63140804A (ja) * 1986-12-02 1988-06-13 Hitachi Ltd 沸騰水型原子力プラントのタ−ビン発電設備
JPS63235605A (ja) * 1987-03-24 1988-09-30 Toshiba Corp タ−ビン建屋

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1912805A1 (de) * 1969-03-08 1970-09-03 Licentia Gmbh Einrichtung zur Wasserabscheidung
DE2312725A1 (de) * 1973-03-14 1974-09-26 Kraftwerk Union Ag Anordnung zur wasserabscheidung und zwischenueberhitzung von sattdampf
FR2553296A1 (fr) * 1983-10-13 1985-04-19 Stein Industrie Separateur d'un melange d'une vapeur et d'un liquide par centrifugation
FR2558741A1 (fr) * 1984-01-31 1985-08-02 Electricite De France Separateur de melanges par centrifugation
FR2644084A1 (fr) * 1984-01-31 1990-09-14 Electricite De France Separateur de melanges par centrifugation
FR2630027A1 (fr) * 1988-04-19 1989-10-20 Stein Industrie Separateur de melanges par centrifugation
DE3832420A1 (de) * 1988-09-23 1990-04-05 Podolskij Masinostroitelnyj Z Fliehkraft-dampfabscheider
EP0377435A1 (de) * 1989-01-06 1990-07-11 STEIN INDUSTRIE Société Anonyme dite: Verfahren und Vorrichtung zum Erosions-Korrosionsschutz von Dampfleitungen aus dem Hochdruckteil einer Turbine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
REVUE ALSTHOM no. 4, 1985, PARIS pages 19 - 26 H.COENCA 'Progress achieved in steam drying: the high velocity separator' *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9291062B2 (en) 2012-09-07 2016-03-22 General Electric Company Methods of forming blades and method for rendering a blade resistant to erosion
KR20170022908A (ko) * 2015-08-20 2017-03-02 제네럴 일렉트릭 테크놀러지 게엠베하 복합 사이클 발전소
CN111065213A (zh) * 2019-12-03 2020-04-24 福建闽威科技股份有限公司 一种便于使用者退膜的线路板加工用退膜结构
CN111065213B (zh) * 2019-12-03 2022-05-17 福建闽威科技股份有限公司 一种便于使用者退膜的线路板加工用退膜结构

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JPH05187205A (ja) 1993-07-27
CA2068148A1 (en) 1992-12-25
TW199935B (de) 1993-02-11

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