EP0710810B1 - Dispositif de traitement des condensats dans une centrale thermique à vapeur et centrale fonctionnant selon ce dispositif - Google Patents

Dispositif de traitement des condensats dans une centrale thermique à vapeur et centrale fonctionnant selon ce dispositif Download PDF

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Publication number
EP0710810B1
EP0710810B1 EP95116581A EP95116581A EP0710810B1 EP 0710810 B1 EP0710810 B1 EP 0710810B1 EP 95116581 A EP95116581 A EP 95116581A EP 95116581 A EP95116581 A EP 95116581A EP 0710810 B1 EP0710810 B1 EP 0710810B1
Authority
EP
European Patent Office
Prior art keywords
condensate
condenser
power plant
steam power
feed water
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
EP95116581A
Other languages
German (de)
English (en)
Other versions
EP0710810A3 (fr
EP0710810A2 (fr
Inventor
Klaus-Bernd Dipl.-Ing. Veenhoff
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of EP0710810A2 publication Critical patent/EP0710810A2/fr
Publication of EP0710810A3 publication Critical patent/EP0710810A3/fr
Application granted granted Critical
Publication of EP0710810B1 publication Critical patent/EP0710810B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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 method for treatment of condensate from a steam power plant. It continues to refer to a system that works afterwards.
  • the heat content of a hot one Gas or vapor into another, generally electrical Energy form converted, e.g. a closed water-steam cycle is used for energy conversion.
  • the heat content of the hot gas or steam is initially used to wholly or partly to water in an evaporator evaporate.
  • the steam generated in this way becomes a steam turbine fed where it relaxes and thereby energy to a generator system transmits.
  • the relaxed steam is then one Capacitor supplied.
  • the steam condenses in the condenser to water.
  • the water (condensate) is then again the evaporator fed so that a closed circuit is formed.
  • the volume inside the condenser above the condensate level is generally under vacuum (vacuum).
  • This condenser vacuum can also be created or maintained by additional pumps.
  • the condensation process and the vacuum achieved thereby ensure that undesired gas entry into the condensate is avoided.
  • the invention is therefore based on the object of a method for the treatment of condensate from a steam power plant, through that with simple means and inexpensively Gas entry into the condensate is avoided, even when the condenser vacuum is not permanently maintained. This should be achieved with a particularly suitable steam power plant become.
  • the invention is based on the consideration that only by closing off the condensate from a gas atmosphere Entry of gas into the condensate can be avoided.
  • the complete one Completion of the condensate against the gas atmosphere can be achieved by taking the condensate level up to about the height a suitable covering device is lowered. While the lowering is the condenser vacuum to avoid gas entry maintain. That by lowering out of the Condensate removed is avoided while avoiding e.g. Air inlet temporarily stored. In this storage phase may or may not maintain the condenser vacuum be maintained. So in this phase, for example Repair work or maintenance work on the capacitor possible. Likewise, there is gas entry into the condensate at one Avoided night shutdown of the steam power plant. After this the condenser vacuum is built up or restored, the temporarily stored condensate, also without gas entry, are conveyed back into the condenser.
  • the task according to the invention solved that a cover device within the capacitor is provided by means of a lowering of the Condensate level the condenser volume below the cover of the capacitor volume above the cover device is at least approximately gas-tight lockable.
  • the condenser vacuum can be broken without any gas entry into the condensate.
  • the condenser vacuum can be restored by returning the condensate in the condenser the condensate level is raised again the cover device opens again.
  • the feed water supply is a heat exchanger to cool the recirculated Condensate switched in which a usable amount of heat of the returned condensate fed to the power plant process can be. It is thus achieved that a usable amount of heat the condensate after returning the condensate to the Condenser used, for example for preheating condensate can be.
  • the feed water supply for returning the temporarily stored Condensate in the condenser can on the condenser be arranged below the covering device. In a more appropriate way Design is the feed water supply, however Capacitor arranged above the cover.
  • the covering device can be implemented in various ways be, e.g. by means of float balls. Expediently includes the covering device has at least one ball valve. This means that the cover device closes automatically achieved in a simple manner when lowering the condensate level.
  • the covering device comprises at least one flap. It expediently has the or each flap Floating elements, for example in the form of a Flap contained cavity. So there is a variation the height of the condensate level an automatic opening and Guaranteed closing of the flaps.
  • FIG. 1 shows a condenser 1 and a feed water tank 2 a steam power plant, not shown.
  • the capacitor 1 is connected via a condensate line 5 to the Feed water tank 2 connected.
  • For the return of condensate K is a connecting line 6 between the feed water tank 2 and the capacitor 1 provided.
  • a heat exchanger 7 is connected on the primary side, the secondary side to a condensate supply line 8 is connected to the boiler of the steam power plant.
  • a first condensate pump 9 switched.
  • the connecting line 6 is by means of a Valve 10 lockable.
  • the Steam D generated steam power is the condenser 1 fed via a steam supply 11. Condensed in condenser 1 the steam D to water or condensate K. the condensate K is made by means of a second condensate pump 12 Condenser 1 through the condensate line 5 into the feed water tank 2 required. The feed water tank 2 becomes the condensate K again via a feed water supply line 13 Steam generation process fed.
  • the volume 15 of the condenser 1 stands above a condensate level 16 under vacuum (vacuum).
  • a cover device 20 is located within the capacitor 1 intended.
  • the covering device 20 comprises one with several Bottom plate 22 provided with openings 21 and at the openings 21 arranged float valves 23.
  • the float valves 23 each include one connected to the base plate 22 Rod 24 guided ball 25.
  • the balls 25 have one lower density than the water W, so that the openings 21 are unlocked if the condensate level 16 is is located above the base plate 22. It is in this Case an unimpeded flow of the condensate through the Openings 21 guaranteed.
  • the cover device 20 is provided with a plurality of openings 31 Base plate 32 and arranged at the openings 31 Flaps 33.
  • the flaps 33 each have at least one Floating element 34 on.
  • the floating elements 34 consist in Embodiment of cavities arranged in the flaps 33.
  • the floating elements 34 can also be used the flaps 33 arranged elements made of material in comparison to the condensate K of lower density. So are also in this embodiment the openings 31 are not closed, if the condensate level 16 is above the base plate 32 is located.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Claims (9)

  1. Procédé de traitement de produit de condensation d'une centrale thermique à vapeur, dans lequel :
    on abaisse le niveau (15) du produit de condensation jusqu'à environ le niveau d'un dispositif (20) de recouvrement monté dans un condenseur (1), le vide du condenseur étant maintenu au moins pendant l'abaissement,
    on retient temporairement le produit (4) de condensation et ,
    après que le vide dans le condenseur a été produit, on renvoie au condenseur (1) le produit (K) de condensation retenu temporairement .
  2. Procédé suivant la revendication 1, la centrale thermique à vapeur comportant une cuve (2) d'eau d'alimentation, caractérisé en ce que l'on envoie à la cuve (2) d'eau d'alimentation le produit (K) de condensation prélevé dans le condenseur (1).
  3. Procédé suivant la revendication 2, caractérisé en ce que le produit (K) de condensation renvoyé est refroidi.
  4. Dispositif de traitement de produit de condensation d'une centrale thermique à vapeur, notamment pour la mise en oeuvre du procédé suivant l'une des revendications 1 à 3, caractérisé par un dispositif (20) de recouvrement qui est monté à l'intérieur du condenseur (1) et au moyen duquel, lors d'un abaissement du niveau (15) du produit de condensation, le volume du condenseur au-dessous du dispositif (20) de recouvrement peut être isolé de manière à peu prés étanche du volume (16) du condenseur au-dessus du dispositif (20) de recouvrement.
  5. Dispositif suivant la revendication 4, caractérisé en ce qu'un échangeur (7) de chaleur est monté dans une alimentation (6) d'eau d'alimentation monté sur le condenseur (1).
  6. Dispositif suivant la revendication 4 ou 5, caractérisé en ce que l'alimentation (6) en eau d'alimentation est montée sur le condenseur (1) au-dessus du dispositif (20) de recouvrement.
  7. Dispositif suivant l'une des revendications 4 à 6, caractérisé en ce que le dispositif (20) de recouvrement comprend au moins une valve (23) à flotteur.
  8. Dispositif suivant l'une des revendications 4 à 6, caractérisé en ce que le dispositif (20) de recouvrement comprend au moins un volet (33).
  9. Dispositif suivant la revendication 8, caractérisé en ce que le volet (33) ou chaque volet (33) comprend un élément (34) flottant.
EP95116581A 1994-11-02 1995-10-20 Dispositif de traitement des condensats dans une centrale thermique à vapeur et centrale fonctionnant selon ce dispositif Expired - Lifetime EP0710810B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4439130 1994-11-02
DE4439130 1994-11-02

Publications (3)

Publication Number Publication Date
EP0710810A2 EP0710810A2 (fr) 1996-05-08
EP0710810A3 EP0710810A3 (fr) 1997-10-22
EP0710810B1 true EP0710810B1 (fr) 1999-09-29

Family

ID=6532308

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95116581A Expired - Lifetime EP0710810B1 (fr) 1994-11-02 1995-10-20 Dispositif de traitement des condensats dans une centrale thermique à vapeur et centrale fonctionnant selon ce dispositif

Country Status (2)

Country Link
EP (1) EP0710810B1 (fr)
DE (1) DE59506942D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2987971A1 (fr) * 2014-08-20 2016-02-24 Siemens Aktiengesellschaft Condensateur pour une centrale à vapeur

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03275903A (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
JP3161072B2 (ja) * 1992-09-10 2001-04-25 株式会社日立製作所 復水器とその運転方法、並びに復水系統とその運転方法

Also Published As

Publication number Publication date
DE59506942D1 (de) 1999-11-04
EP0710810A3 (fr) 1997-10-22
EP0710810A2 (fr) 1996-05-08

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