EP2918792A1 - Centrale à vapeur dotée d'une conduite de vapeur de fuite à broche - Google Patents

Centrale à vapeur dotée d'une conduite de vapeur de fuite à broche Download PDF

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Publication number
EP2918792A1
EP2918792A1 EP14159494.5A EP14159494A EP2918792A1 EP 2918792 A1 EP2918792 A1 EP 2918792A1 EP 14159494 A EP14159494 A EP 14159494A EP 2918792 A1 EP2918792 A1 EP 2918792A1
Authority
EP
European Patent Office
Prior art keywords
steam
spindle
valve
power plant
line
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Withdrawn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
EP14159494.5A
Other languages
German (de)
English (en)
Inventor
Rachid Dhima
Kakhi Naskidashvili
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 AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP14159494.5A priority Critical patent/EP2918792A1/fr
Priority to CN201580013099.1A priority patent/CN106103910B/zh
Priority to KR1020167028046A priority patent/KR101925697B1/ko
Priority to PCT/EP2015/054355 priority patent/WO2015135791A1/fr
Priority to JP2016556966A priority patent/JP6416274B2/ja
Priority to RU2016139987A priority patent/RU2642708C1/ru
Priority to US15/123,748 priority patent/US10337356B2/en
Priority to EP15707928.6A priority patent/EP3087257A1/fr
Publication of EP2918792A1 publication Critical patent/EP2918792A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
    • 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

Definitions

  • the invention relates to a steam power plant comprising a steam turbine, a steam line which is fluidly connected to the steam turbine and is designed for conducting steam, a valve which is arranged in the steam line and for changing a steam flow rate of the steam through the steam line is formed During operation in the valve, a spindle outlet steam is formed and this is fluidically connected to a spindle outlet steam line, a spindle leak steam collector, which is fluidically connected to the spindle outlet steam line.
  • the invention relates to a method for operating a steam power plant.
  • Steam power plants usually comprise a steam turbine and a steam generator, wherein a steam line is designed and arranged such that a steam generated in the steam generator can flow to the steam turbine.
  • a steam line is designed and arranged such that a steam generated in the steam generator can flow to the steam turbine.
  • steam with a temperature of over 600 ° C and a pressure of over 300 bar arise.
  • Such high temperatures and pressures of the steam pose a challenge to the valves located in the steam lines.
  • two valves are arranged in a steam line in which steam is fed to a steam turbine, namely a quick-acting valve and a control valve.
  • the quick-closing valve is provided for quick closing in a fault and designed accordingly for this case.
  • the control valve takes over the task of regulating or controlling the steam supply through the steam line when the quick-acting valve is open.
  • the invention seeks to remedy this situation and has set itself the task of specifying a steam power plant, in which the spindle leak steam can be used further.
  • a steam power plant comprising a steam turbine, a steam line for conducting steam, a valve which is arranged in the steam line, a spindle outlet steam line which is fluidically connected to the valve and a Spindelleckdampfsammler which is fluidically connected to the Spindelleckdampf nie.
  • the object is achieved in that a method for operating the steam power plant is offered, in which the valve opens when a spindle leak steam before the valve is present and closes again when no spindle leak steam flows out of the valve.
  • a valve in the spindle outlet steam line.
  • the valve Under operating conditions where the spindle leak steam flows through the spindle outlet steam line, the valve remains open. To avoid backflow under certain operating conditions closes the valve if no spindle leak steam flows in.
  • Such operating conditions should be recorded by means of suitable measuring instruments located in front of the valve in the spindle outlet steam line. Suitable measuring apparatuses would be, for example, a measuring device for detecting the pressure of the spindle leak steam and / or a measuring device for detecting the temperature of the spindle leak steam.
  • the spindle leakage steam can now be deliberately used in a larger field of use. This creates the advantage of higher operational reliability.
  • the spindle steam exhaust pipes were usually fluidly connected with shaft sealing systems of the steam turbine. Since the valve leakage steam flows out of the valves, such as live steam quick-closing valve, live steam control valve and intercepting quick-closing valve and intercepting control valve at high temperatures, the entire shaft sealing steam system has to be designed for this high temperature, which makes the system expensive. With the invention, the entire shaft vapor vapor system is thus cheaper, since the use of cheap piping materials is now possible.
  • the valve is designed as a flap.
  • the valve is formed in the steam line with a known in the art flap. Movement of the flap regulates the flow through the spindle outlet steam line.
  • a flap is a relatively inexpensive way to control the flow of steam through a pipe.
  • the flap is controlled in a further advantageous embodiment.
  • the flap is designed as a check valve.
  • the valve may be formed as a valve.
  • a valve With a valve, a more precise control of the flow through the spindle outlet steam line is possible and can be considered depending on the desired field of application.
  • the control of the valve can also be done via a control unit.
  • the control unit from outside control variables are specified.
  • the control unit can be designed in such a way that autonomous control can take place.
  • a safety valve is arranged in the spindle outlet steam line, which is arranged in addition to the valve and opens when exceeding the maximum allowable pressure and protects the valves against high counter pressures.
  • the spindle outlet steam collector is designed as a capacitor. So far, the direct introduction of the spindle leak steam in the capacitor was not possible. Through the use according to the invention of a fitting in the spindle outlet steam line, the spindle leak steam can now be led directly into the condenser.
  • the spindle leak steam collector may be formed as a standpipe.
  • a standpipe is usually a water level control vessel, which is arranged in front of a condenser.
  • the spindle leak steam is fed directly into the standpipe.
  • the standpipe which is designed substantially bent, the steam is flowed in a geodetically lower location, the steam flows upwards and eventually passes through a water injection finally to the condenser.
  • the collected water is fed through a water loop to the condenser hotwell at a geodetically low point.
  • the spindle leak steam collector is designed as an LCM tank.
  • An LCM tank has the following function: absorption of condensate or vapors which can not be connected to the main condenser.
  • the LCM tank is a container in which the steam is condensed and water is collected.
  • the LCM tank is open to the atmosphere. As a result, there is always atmospheric pressure in the tank.
  • the object is also achieved in that a method for operating the steam power plant is indicated, the valve opens when spindle leak steam is present in front of the valve and closes again when no spindle leak steam flows out of the valve. Thus, an unwanted pulling air into the valve is effectively prevented.
  • the safety valve is only opened as soon as a maximum pressure in the spindle outlet steam line is reached in order to protect the turbine valves from high counter pressures.
  • FIG. 1 shows a steam turbine 1 comprising a steam turbine 2, which comprises a first turbine part 2a and a second turbine part 2b.
  • a steam generator and a generator is not shown in detail.
  • the first sub-turbine 2a is designed as a combined high-pressure and medium-pressure steam turbine.
  • Fresh steam flows from a steam generator not shown via a quick-closing valve 3 and a flow-connected with the quick-closing valve 3 control valve 4 in a steam line 5.
  • the live steam therefore flows first through the quick-closing valve 3 and then through the control valve 4 and from there via the steam line 5 into the high-pressure part 2c of the first part turbine 2a.
  • the steam flows out of the high-pressure part 2c (not shown) and is reheated in a reheater and then flows through a medium-pressure quick-acting valve 6 and medium-pressure control valve 7 in the medium-pressure part 2d of the first turbine part 2a ,
  • the steam line which fluidly connects the first sub-turbine 2 a to the second sub-turbine 2 b, is not shown and is referred to as overflow line.
  • the steam After flowing through the second turbine part 2b, the steam then flows into a condenser 8 and condenses there to water.
  • a part of a sealing steam system 9 is shown in the steam turbine 2.
  • the flowing in the quick-closing valve 3 and the control valve 4 steam is characterized by a comparatively high temperature and high pressure.
  • the steam flowing into the medium-pressure quick-action valve 6 and the medium-pressure control valve 7 is characterized by a high temperature at a lower pressure than in the previous case.
  • valves 3, 4, 6 and 7 comprise a valve housing and a valve stem which moves a poppet. A movement of the valve stem with the poppet leads to a regulation of the vapor flow through the valve and thus the vapor flow rate of the vapor through the vapor line 5.
  • Each valve 3, 4, 6, 7 each comprise a control unit 10 which is designed to control the valve stem.
  • the spindle outlet steam flows out of the quick-closing valve 3 via a first spindle outlet steam line 11.
  • Spindle leakage steam also flows via a second spindle outlet steam line 12 into a common third spindle outlet steam line 13.
  • a valve 14a is arranged in the third spindle outlet steam line 13. After flowing through the steam through the valve 14a, the spindle leak steam passes via a fourth spindle outlet steam line 15 into a spindle steam collector 16.
  • the spindle outlet steam from the control valve 4 and the medium-pressure control valve 7 is formed.
  • the spindle leak steam from the control valve 4 is passed through a fifth spindle outlet steam line 17.
  • the spindle outlet steam flowing out of the medium-pressure control valve 7 passes into a sixth spindle outlet steam line 18.
  • the fifth spindle leak steam line 17 and the sixth spindle leak steam line 18 open into a common seventh spindle leak steam line 19, in which a valve 14b is arranged. After flowing through the valve 14b, the leakage steam enters an eighth spindle outlet steam line 20 and from there finally into the spindle steam collector 16.
  • a first safety valve 21 is in addition to the valve 14a and in the seventh spindle outlet steam line 19, a second safety valve 22 is arranged in addition to the valve 14b.
  • valves 14a and 14b are opened.
  • the valves 14a and 14b reconnect when no spindle leak steam flows.
  • the fittings 14a and 14b may be formed as flaps. These flaps can be controlled via a respective first control unit 23a and a second control unit 23b.
  • the first control unit 23a controls the first armature 14a and the second control unit 23b activates the second armature 14b.
  • the flap 14a, 14b may be formed as a check valve.
  • the valve 14a and 14b may also be formed as a valve.
  • the spindle steam collector 16 is formed as a capacitor 8. This may be a separator capacitor or the capacitor, which is fluidically connected to the second turbine part 2b.
  • FIG. 2 also shows a steam power plant 1.
  • the difference to the steam power plant 1 according to FIG. 1 lies in the fact that now an LCM tank 24 is used as spindle leak steam collector 16.
  • the FIG. 3 also shows a steam power plant 1, the difference in the in FIG. 3 shown steam power plant 1 with respect to the steam power plant 1 according to FIG. 1
  • the spindle steam collector 16 is formed as a standpipe 25.
  • the standpipe 25 comprises a bent pipe 26, to which the fourth spindle outlet steam line and the eighth spindle outlet steam line is coupled.
  • a water injection 27 is arranged in the radius of curvature.
  • the spindle leak steam flows via a further line 28 to the condenser.
  • the collected water is passed through a water loop 30 to a condenser hotwell 31.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
EP14159494.5A 2014-03-13 2014-03-13 Centrale à vapeur dotée d'une conduite de vapeur de fuite à broche Withdrawn EP2918792A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP14159494.5A EP2918792A1 (fr) 2014-03-13 2014-03-13 Centrale à vapeur dotée d'une conduite de vapeur de fuite à broche
CN201580013099.1A CN106103910B (zh) 2014-03-13 2015-03-03 具有阀杆漏汽管路的蒸汽动力设备
KR1020167028046A KR101925697B1 (ko) 2014-03-13 2015-03-03 밸브 스템 누출 증기 라인을 갖는 증기 발전소
PCT/EP2015/054355 WO2015135791A1 (fr) 2014-03-13 2015-03-03 Groupe vapeur équipé d'un conduit de vapeur de fuite de broche
JP2016556966A JP6416274B2 (ja) 2014-03-13 2015-03-03 弁軸漏れ蒸気配管を備える蒸気電力設備
RU2016139987A RU2642708C1 (ru) 2014-03-13 2015-03-03 Паровая энергетическая установка с трубопроводом шпиндельного пара утечки
US15/123,748 US10337356B2 (en) 2014-03-13 2015-03-03 Steam power installation comprising valve-stem leakage steam line
EP15707928.6A EP3087257A1 (fr) 2014-03-13 2015-03-03 Groupe vapeur équipé d'un conduit de vapeur de fuite de broche

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14159494.5A EP2918792A1 (fr) 2014-03-13 2014-03-13 Centrale à vapeur dotée d'une conduite de vapeur de fuite à broche

Publications (1)

Publication Number Publication Date
EP2918792A1 true EP2918792A1 (fr) 2015-09-16

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP14159494.5A Withdrawn EP2918792A1 (fr) 2014-03-13 2014-03-13 Centrale à vapeur dotée d'une conduite de vapeur de fuite à broche
EP15707928.6A Withdrawn EP3087257A1 (fr) 2014-03-13 2015-03-03 Groupe vapeur équipé d'un conduit de vapeur de fuite de broche

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP15707928.6A Withdrawn EP3087257A1 (fr) 2014-03-13 2015-03-03 Groupe vapeur équipé d'un conduit de vapeur de fuite de broche

Country Status (7)

Country Link
US (1) US10337356B2 (fr)
EP (2) EP2918792A1 (fr)
JP (1) JP6416274B2 (fr)
KR (1) KR101925697B1 (fr)
CN (1) CN106103910B (fr)
RU (1) RU2642708C1 (fr)
WO (1) WO2015135791A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110425011B (zh) * 2019-07-30 2022-03-08 西安热工研究院有限公司 一种电站汽轮机组轴封及门杆漏汽系统的优化控制方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040003593A1 (en) * 2000-09-29 2004-01-08 Harry Sauer Steam turbine plant, and method of operating a steam turbine plant
US20120027565A1 (en) * 2010-07-28 2012-02-02 General Electric Company System and method for controlling leak steam to steam seal header for improving steam turbine performance
DE102012213976A1 (de) * 2012-08-07 2014-02-13 Siemens Aktiengesellschaft Externer Dampfspeicher zur Beteiligung einer Dampfturbine an Netzdienstleistungen und Leistungsrampen

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JPS58206809A (ja) * 1982-05-28 1983-12-02 Toshiba Corp タ−ビンバイパス弁浸蝕防止装置
JPS58217705A (ja) * 1982-06-10 1983-12-17 Toshiba Corp 蒸気タ−ビンの制御装置
JPS60237101A (ja) * 1984-05-08 1985-11-26 Toshiba Corp 蒸気弁監視装置
JPS62206203A (ja) * 1986-03-07 1987-09-10 Hitachi Ltd 蒸気タ−ビン運転制御方法
US4873827A (en) * 1987-09-30 1989-10-17 Electric Power Research Institute Steam turbine plant
KR0152445B1 (ko) * 1990-01-25 1998-10-01 고든 에이치. 텔퍼 밸브의 동작 특성을 평가하는 진단 시스템 및 방법
US5018356A (en) * 1990-10-10 1991-05-28 Westinghouse Electric Corp. Temperature control of a steam turbine steam to minimize thermal stresses
DE19535228C2 (de) * 1995-09-22 2003-05-08 Alstom Verfahren zum Betrieb einer Kraftwerksanlage
RU2106864C1 (ru) * 1995-10-23 1998-03-20 Николай Серафимович Зефиров Средство для лечения болезни альцгеймера
JP2001227303A (ja) * 2000-02-15 2001-08-24 Fuji Electric Co Ltd 蒸気タービンの軸封装置
CN1318737C (zh) * 2000-05-31 2007-05-30 西门子公司 用于运行包括若干无负载或小负载缸的蒸汽轮机的方法和装置
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JP2008089283A (ja) * 2006-10-05 2008-04-17 Chugoku Electric Power Co Inc:The 安全装置の状態検出装置
EP2136037A3 (fr) * 2008-06-20 2011-01-05 Siemens Aktiengesellschaft Procédé et dispositif d'exploitation d'une centrale à vapeur dotée d'une turbine à vapeur et d'un utilisateur
US8650878B2 (en) * 2010-03-02 2014-02-18 General Electric Company Turbine system including valve for leak off line for controlling seal steam flow
GB201106410D0 (en) * 2011-04-15 2011-06-01 Doosan Power Systems Ltd Turbine system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040003593A1 (en) * 2000-09-29 2004-01-08 Harry Sauer Steam turbine plant, and method of operating a steam turbine plant
US20120027565A1 (en) * 2010-07-28 2012-02-02 General Electric Company System and method for controlling leak steam to steam seal header for improving steam turbine performance
DE102012213976A1 (de) * 2012-08-07 2014-02-13 Siemens Aktiengesellschaft Externer Dampfspeicher zur Beteiligung einer Dampfturbine an Netzdienstleistungen und Leistungsrampen

Also Published As

Publication number Publication date
US20170016351A1 (en) 2017-01-19
KR101925697B1 (ko) 2018-12-05
KR20160131094A (ko) 2016-11-15
EP3087257A1 (fr) 2016-11-02
JP2017519140A (ja) 2017-07-13
RU2642708C1 (ru) 2018-01-25
CN106103910A (zh) 2016-11-09
JP6416274B2 (ja) 2018-10-31
US10337356B2 (en) 2019-07-02
WO2015135791A1 (fr) 2015-09-17
CN106103910B (zh) 2019-05-10

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