EP2829692A1 - Circuit de liquide/vapeur et centrale à vapeur dotée du circuit de liquide/vapeur - Google Patents

Circuit de liquide/vapeur et centrale à vapeur dotée du circuit de liquide/vapeur Download PDF

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Publication number
EP2829692A1
EP2829692A1 EP13177930.8A EP13177930A EP2829692A1 EP 2829692 A1 EP2829692 A1 EP 2829692A1 EP 13177930 A EP13177930 A EP 13177930A EP 2829692 A1 EP2829692 A1 EP 2829692A1
Authority
EP
European Patent Office
Prior art keywords
liquid
lower chamber
condensate
steam
vapor
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Withdrawn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
EP13177930.8A
Other languages
German (de)
English (en)
Inventor
Andreas Auge
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 EP13177930.8A priority Critical patent/EP2829692A1/fr
Priority to PCT/EP2014/064287 priority patent/WO2015010876A1/fr
Publication of EP2829692A1 publication Critical patent/EP2829692A1/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Withdrawn legal-status Critical Current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
    • F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate

Definitions

  • the invention relates to a liquid / steam cycle and a steam power plant with the liquid / steam cycle.
  • a fluid in particular water
  • the liquid / steam cycle comprises a boiler, a steam turbine and a condenser, wherein in the boiler liquid water is vaporized to steam with the supply of heat energy.
  • the steam is then expanded in the steam turbine, wherein the steam turbine drives an electric generator of the steam power plant.
  • the water vapor is liquefied in the condenser and the resulting liquid water is returned to the boiler.
  • the object of the invention is to provide a liquid / steam cycle and a steam power plant with the liquid / steam cycle, wherein the liquid / steam cycle is exposed to a standstill only a small corrosion.
  • the liquid / vapor cycle comprises a condenser for converting a vapor into a liquid and a condensate collecting tank for collecting the liquid formed in the condenser, the condensate collecting tank having a partition dividing the condensate collecting tank into an upper chamber and a lower chamber, and a condensate overflow line via which the liquid from the upper chamber in the lower chamber is flowable, wherein the lower chamber is so isolatable that no fluid can enter the lower chamber.
  • the lower chamber can be isolated so that no oxygen can enter the lower chamber, thereby also no oxygen is dissolved in the liquid located in the lower chamber.
  • this oxygen-free liquid is the liquid / steam cycle immediately available again.
  • the oxygen concentration in the liquid / steam cycle after restarting is low, whereby corrosion of the liquid / steam cycle is advantageously prevented.
  • the condensate overflow line comprises a first shut-off valve, by means of which the lower chamber is isolatable from the upper chamber.
  • the dividing wall preferably has a gradient and the condensate overflow pipe opens in the region of the lower end of the gradient into the upper chamber, so that the liquid can be conducted into the condensate overflow line by means of the gradient of the dividing wall.
  • the liquid produced in the condenser is thus conducted to the condensate overflow line, from where it flows into the lower chamber.
  • the condensate collection on a pressure equalization line which connects the upper chamber with the lower chamber for pressure equalization of the two chambers fluidly.
  • the pressure equalization line has a second shut-off valve, by means of which the lower chamber can be isolated from the upper chamber.
  • the lower chamber has a vertically extending control range within which the liquid level is located during operation of the liquid / vapor cycle. It is preferred that the pressure equalization line opens above the control range in the lower chamber. This advantageously ensures that during operation of the liquid / vapor cycle no liquid can flow via the pressure equalization line from the lower chamber into the upper chamber and that the pressure equalization does not experience any impairment of its function by the liquid.
  • the liquid / vapor circuit has a condensate line connected to the lower chamber via which the liquid can be transported away from the lower chamber is, wherein the condensate line has a third shut-off valve, by means of which the lower chamber is isolable.
  • the steam power plant according to the invention has the liquid / steam cycle according to the invention.
  • the steam power plant has the advantage that after a stoppage of the steam power plant, the duration of a Umleitdampf suitss in which the oxygen is removed from the liquid / steam cycle and the steam power plant can produce no electrical energy is short or even completely avoided.
  • a liquid / steam cycle has a condenser 1 and a condensate collecting tank 6 arranged below the condenser 1.
  • the condenser 1 is formed by a pack of cooling tubes 4, within which a cooling fluid is flowable. At the two end faces of the pack, a cooling fluid chamber 5 is arranged in each case, wherein the cooling tubes 4 open into the respective cooling fluid chamber 5.
  • Above the cooling tubes 4 is a vapor space 2, which is filled with a vapor which moves with a flow direction 3 down to the condenser 1.
  • the vapor condenses in the condenser 1 and falls from the condenser 1 as rain 7 into the condensate collecting tank 6.
  • the vapor space 2 and the condenser 1 are arranged horizontally next to one another, which would lead to a horizontal flow direction 3.
  • the condensate collector 6 has at its lowest point a drain 9, in which a condensate line 10 opens.
  • the condensate line 10 has a condensate pump 11, by means of which located in the condensate collecting liquid 8 is wegtransportierbar from the condensate collection container.
  • the condensate line 10 may open into a boiler of the liquid / steam cycle, where the liquid is evaporated under a supply of heat.
  • the condensate pump 11 is thereby controlled so that the level 23 of the liquid 8, i. the liquid level in which condensate collector 6 is located within a vertically extending control region 12.
  • the level 23 may be regulated by adding additional water.
  • the level 23 is measured by means of a float 13. It is also conceivable to measure the level by means of ultrasound.
  • the condensate collection container 6 of the preferred embodiment a partition wall 14, which divides the condensate collection container 6 in an above the partition wall 14 disposed upper chamber 15 and disposed below the partition wall 14 lower chamber 16.
  • the partition 14 according to FIG. 2 has a slope, wherein at the lowest point of the partition wall 14, a condensate overflow pipe 17 opens into the upper chamber 15. The other end of the condensate overflow pipe 17 opens into the lower chamber 16.
  • the rain 7 arising in the condenser 1 first enters the upper chamber 15 and collects on the partition wall 14.
  • the gradient of the partition wall 14 causes the liquid to flow in a flow direction 18 into the condensate overflow line 17, via which the liquid flows into the lower chamber 16.
  • the condensate collecting tank 6 further comprises a pressure equalization line 19, which connects the steam-filled part of the upper chamber 15 with the steam-filled part of the lower chamber 16 fluidly with each other.
  • the condensate overflow line 17 opens into the lower chamber 16 in an area above the control range 12th
  • FIG. 2 shows that the condensate overflow line 17, a first shut-off valve 20, the pressure equalization line 19, a second shut-off valve 21 and the condensate line 10 has a third shut-off valve 22.
  • the third shut-off valve 22 is arranged upstream of the condensate pump 11, but it is also conceivable to arrange the third shut-off valve 22 downstream of the condensate pump 11.
  • the lower chamber 16 can be isolated by means of the shut-off valves 20 to 22 such that no fluid, in particular air, can penetrate into the lower chamber.
  • the lower chamber 16 with the shut-off valves 20 to 22 is designed such that in the lower chamber 16, a negative pressure can be maintained. It is also possible to flood the lower chamber 16 with a protective gas, for example nitrogen, and place it under a slight overpressure.
  • a protective gas for example nitrogen
  • shut-off valves 20 to 22 for example shut-off valves can be used.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
EP13177930.8A 2013-07-25 2013-07-25 Circuit de liquide/vapeur et centrale à vapeur dotée du circuit de liquide/vapeur Withdrawn EP2829692A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13177930.8A EP2829692A1 (fr) 2013-07-25 2013-07-25 Circuit de liquide/vapeur et centrale à vapeur dotée du circuit de liquide/vapeur
PCT/EP2014/064287 WO2015010876A1 (fr) 2013-07-25 2014-07-04 Circuit liquide/vapeur et centrale à vapeur équipé du circuit liquide/vapeur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13177930.8A EP2829692A1 (fr) 2013-07-25 2013-07-25 Circuit de liquide/vapeur et centrale à vapeur dotée du circuit de liquide/vapeur

Publications (1)

Publication Number Publication Date
EP2829692A1 true EP2829692A1 (fr) 2015-01-28

Family

ID=48874865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13177930.8A Withdrawn EP2829692A1 (fr) 2013-07-25 2013-07-25 Circuit de liquide/vapeur et centrale à vapeur dotée du circuit de liquide/vapeur

Country Status (2)

Country Link
EP (1) EP2829692A1 (fr)
WO (1) WO2015010876A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110312773A (zh) 2017-02-20 2019-10-08 3M创新有限公司 自润湿粘合剂组合物

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6189486A (ja) * 1984-10-09 1986-05-07 Hitachi Ltd コンバインドプラントの復水装置
JPH03275905A (ja) * 1990-03-23 1991-12-06 Toshiba Corp 蒸気タービンプラントの運転方法
JPH03275904A (ja) * 1990-03-23 1991-12-06 Toshiba Corp 蒸気タービンプラントの起動方法およびその方法に使用する復水装置
US5095706A (en) * 1990-03-23 1992-03-17 Kabushiki Kaisha Toshiba Start-up method of steam turbine plant and condenser employed for said method
EP0587363A2 (fr) * 1992-09-10 1994-03-16 Hitachi, Ltd. Condenseur pour turbine à vapeur et méthode d'opération d'un tel condenseur
JPH0763485A (ja) * 1993-08-24 1995-03-10 Hitachi Ltd 蒸気タービン用復水装置及びその運転方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6189486A (ja) * 1984-10-09 1986-05-07 Hitachi Ltd コンバインドプラントの復水装置
JPH03275905A (ja) * 1990-03-23 1991-12-06 Toshiba Corp 蒸気タービンプラントの運転方法
JPH03275904A (ja) * 1990-03-23 1991-12-06 Toshiba Corp 蒸気タービンプラントの起動方法およびその方法に使用する復水装置
US5095706A (en) * 1990-03-23 1992-03-17 Kabushiki Kaisha Toshiba Start-up method of steam turbine plant and condenser employed for said method
EP0587363A2 (fr) * 1992-09-10 1994-03-16 Hitachi, Ltd. Condenseur pour turbine à vapeur et méthode d'opération d'un tel condenseur
JPH0763485A (ja) * 1993-08-24 1995-03-10 Hitachi Ltd 蒸気タービン用復水装置及びその運転方法

Also Published As

Publication number Publication date
WO2015010876A1 (fr) 2015-01-29

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