EP0865596B1 - Systeme de refroidissement de retour - Google Patents

Systeme de refroidissement de retour Download PDF

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Publication number
EP0865596B1
EP0865596B1 EP96945758A EP96945758A EP0865596B1 EP 0865596 B1 EP0865596 B1 EP 0865596B1 EP 96945758 A EP96945758 A EP 96945758A EP 96945758 A EP96945758 A EP 96945758A EP 0865596 B1 EP0865596 B1 EP 0865596B1
Authority
EP
European Patent Office
Prior art keywords
water
cooling
condenser
cooling water
recooling system
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
EP96945758A
Other languages
German (de)
English (en)
Other versions
EP0865596A2 (fr
Inventor
Gerhard Kratz
Rudolf Lehmann
Siegfried MÜNCH
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
Publication of EP0865596A2 publication Critical patent/EP0865596A2/fr
Application granted granted Critical
Publication of EP0865596B1 publication Critical patent/EP0865596B1/fr
Anticipated expiration legal-status Critical
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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
    • F28B9/04—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid
    • F28B9/06—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid with provision for re-cooling the cooling water or other cooling liquid

Definitions

  • the invention relates to a cooling system for cooling water the condenser of a steam power plant.
  • a steam power plant is usually used to generate electrical Energy or to drive a machine used. This is a in an evaporator circuit Steam power plant-led working medium, usually a Water-steam mixture, evaporated in an evaporator. The one there generated steam relaxes in the work Steam turbine of the steam power plant and then becomes its Capacitor supplied. The working medium condensed in the condenser is then again via a feed water pump Evaporator fed.
  • Steam power plant-led working medium usually a Water-steam mixture
  • the working medium is condensed in the condenser usually by heat exchange with the cooling water supplied, that heats up.
  • the heated cooling water will usually in turn in a recooling system by heat exchange cooled with the ambient air.
  • the cooled cooling water is then available again to cool the condenser.
  • the recooling system typically includes a number of cooling towers. Each cooling tower is connected to a collecting duct Collection basin assigned in the cooled cooling water is collected. The recooled cooling water is from there fed back into the condenser via a condenser pump.
  • a recooling system is usually due to the circumstances adapted to the power plant site and thus requires a considerable structural and constructive effort.
  • Level control for the water level of each collecting basin required (see for example DE 2 356 505 A).
  • the invention is therefore based on the object of a recooling system for cooling water from the condenser of a steam power plant specify that can be installed in a particularly simple manner and is operable.
  • this object is achieved by a recooling system of the type mentioned above with a number of cooling modules, each of them via a water supply shaft assigned to it is feedable, the water supply shafts in the manner of tubes communicating with each other and via a common main cooling water pipe with the condenser are connected.
  • the invention is based on the consideration that the installation effort for the recooling system through standardized Components is reduced. When using standardized components or modules for the recooling system can this in the manner of a modular system to the respective Power plant to be adjusted.
  • the recooling system can also be operated particularly easily if there is an individual level control for each water collection basin assigned to a cooling module replaced is a level control common to all water reservoirs.
  • a level control common to all water reservoirs can be achieved in that a central Water supply for all cooling modules is designed in such a way that a variation in the cooling water flow to a cooling module the cooling water inflow to the other cooling modules approximately leaves unchanged.
  • Such an interpretation can be achieved by connecting the water supply shafts to one another according to the principle of communicating tubes.
  • communicating tubes is defined in “Duden: The Great Dictionary of the German Language", Volume 5 (1980), Bibliographic Institute Mannheim.
  • each water supply shaft is by means of an inlet fitting assigned to it lockable.
  • the water supply to each cooling module is included particularly simple means controllable.
  • the water supply can easily interrupted, taking the water overflow as a bypass for the excess cooling water flow serves. This means that even when a cooling module is shut off The water supply to the other cooling modules remains unchanged. thats why a complex level regulation in the collecting basin of the Cooling modules even when one or more cooling modules are shut off not mandatory.
  • the total flow of cooling water to be cooled can be divided into a first partial flow, which is cooled in cooling modules, and into a second sub-stream that overflows the water directly into the water return without cooling in the manner of a bypass is returned.
  • the recooling system 1 for cooling water from the condenser 2 one Steam power plant, not shown, according to FIG. 1 comprises a number of cooling modules 4. Each cooling module 4 is assigned a fan 6. The cooling modules 4 are On the cooling water inlet side via a main cooling water line 8 and on the cooling water outlet side via a cooling tower return duct 10 and a cooling water pump unit 12 to the condenser 2 connected. The capacitor 2 is on the primary side in the only indicated water-steam circuit 14 of the steam power plant switched.
  • the cooling modules 4 are in terms of their dimensions and rain area standardized. An adaptation to the specific Requirements of the steam power plant is determined by a suitable one Selection and combination of the cooling modules 4 in a particularly simple manner Way possible.
  • Figure 1 shows a row arrangement of the Cooling modules 4. Alternatively, there are other arrangements, for example in pairs or in block form.
  • a water supply shaft 20 according to FIG. 2 is each cooling module 4 assigned.
  • the water supply shafts 20 are on the main cooling water line 8 connected to them.
  • the water supply shafts 20 are both together via a water supply channel 22 as well as with the condenser 2 of the steam power plant via the main cooling water pipe 8 connected in the manner of communicating tubes.
  • Of each Water supply shaft 20 branches one with an inlet fitting 24 lockable water distribution line 26 from.
  • About the Main cooling water line 8 and the feed channel 22 as well via the water distribution line 26 is the respective Water supply shaft 20 assigned cooling module 4 cooling water K can be fed from the condenser 2 to the steam power plant.
  • each cooling module 4 On the cooling water outlet side, each cooling module 4 is above it assigned (not shown) collecting basin and one Pool drain shaft 28 with one common to all cooling modules 4 Cooling tower return channel 10 connected.
  • the cooling tower return duct 10 is in turn via the cooling water pump unit 12 connected to the capacitor 2.
  • a water overflow 32 is connected to the main water line 8, the output side with the cooling tower return duct 10 is connected.
  • Weir wall 34 becomes a constant water level 36 in the water overflow 32 and thus also a constant water level 36 'in same height in each with the water overflow 32 in type communicating tubes connected water supply shaft 20 maintained.
  • the water overflow 32 prevents a Bypasses an overfeed of the water supply shafts 20 and the water distribution lines 26 of the cooling modules 4.
  • Cooling module 4 For example, for maintenance or repair work on one Cooling module 4 is this by means of the inlet fitting assigned to it 24 lockable, so that the inflow of cooling water to be cooled K is prevented.
  • the inflow of cooling water K to be cooled the not blocked cooling modules 4 remains due to of the unchanged water level 36 'in the respectively assigned Water supply shafts 20 unchanged, so that even when a cooling module 4 is shut off, no complex level regulation or flow control in the other cooling modules 4 is required.
  • the recooling system 1 is therefore particularly simple adaptable to different requirements.
  • Using the inlet fittings 24 is the ratio of recooled cooling water K to the non-recooled cooling water subset K ' can be varied in a particularly simple manner and thus to different ones Adaptable operating conditions of the steam power plant.
  • the recooling system 1 of the steam power plant special flexible and easy to use.
  • cooling modules 4 can be of wood construction, steel skeleton construction or be made in reinforced concrete.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un système de refroidissement de retour pour l'eau de refroidissement (K) issue du condenseur (2) d'une installation thermique à vapeur, qui présente un nombre de modules de refroidissement (4) dont chacun peut être alimenté par un puits d'alimentation en eau (20) qui lui est associé. A cet effet, les puits d'alimentation en eau (20) sont interconnectés et reliés au condenseur (2) par l'intermédiaire d'une conduite principale d'eau de refroidissement (8) commune, à la manière de tuyaux communicants. Un système de refroidissement de retour de ce type est particulièrement facile à installer et à exploiter.

Claims (3)

  1. Système de refroidissement de retour pour de l'eau (K) de refroidissement du condenseur (2) d'une installation à force motrice à vapeur, comprenant un certain nombre de modules (4) de refroidissement, dont chacun peut être alimenté par un puits (20) d'apport d'eau qui lui est associé, les puits (20) d'apport d'eau communiquant entre eux à la manière de vases communicants et communiquant avec le condenseur (2), par un conduit (8) principal commun d'eau de refroidissement.
  2. Système de refroidissement de retour suivant la revendication 1,
       caractérisé par un trop-plein (32) d'eau, raccordé au conduit (8) principal d'eau de refroidissement et communiquant du côté de la sortie par un canal (10) de retour.
  3. Système de refroidissement de retour suivant la revendication 1 ou 2,
       caractérisé en ce que chaque puits (20) d'apport d'eau peut être obturé au moyen d'un robinet (24) d'accès qui lui est associé.
EP96945758A 1995-12-11 1996-11-29 Systeme de refroidissement de retour Expired - Lifetime EP0865596B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19546188 1995-12-11
DE19546188 1995-12-11
PCT/DE1996/002298 WO1997021966A2 (fr) 1995-12-11 1996-11-29 Systeme de refroidissement de retour

Publications (2)

Publication Number Publication Date
EP0865596A2 EP0865596A2 (fr) 1998-09-23
EP0865596B1 true EP0865596B1 (fr) 2000-02-23

Family

ID=7779795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96945758A Expired - Lifetime EP0865596B1 (fr) 1995-12-11 1996-11-29 Systeme de refroidissement de retour

Country Status (14)

Country Link
US (1) US6276446B1 (fr)
EP (1) EP0865596B1 (fr)
JP (1) JP3839488B2 (fr)
KR (1) KR100408325B1 (fr)
CN (1) CN1131985C (fr)
AU (1) AU707461B2 (fr)
CA (1) CA2240099C (fr)
DE (1) DE59604506D1 (fr)
ES (1) ES2143805T3 (fr)
IN (1) IN192591B (fr)
MY (1) MY115885A (fr)
RU (1) RU2164330C2 (fr)
UA (1) UA41465C2 (fr)
WO (1) WO1997021966A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19957874A1 (de) * 1999-12-01 2001-06-07 Alstom Power Schweiz Ag Baden Kombikraftwerk
US6834080B1 (en) * 2000-09-05 2004-12-21 Kabushiki Kaisha Toshiba Video encoding method and video encoding apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US803220A (en) * 1904-06-21 1905-10-31 Frank Smedley Farnsworth Surface condenser.
US974598A (en) * 1910-06-04 1910-11-01 Frederick A Sondheimer Condenser.
US1103386A (en) * 1912-12-12 1914-07-14 George L Vail Condenser.
DE2356505A1 (de) * 1973-11-13 1975-05-15 Gea Luftkuehler Happel Gmbh Vorrichtung zum rueckkuehlen einer waermetraeger-fluessigkeit
DE2605527A1 (de) 1976-02-12 1977-08-18 Kraftanlagen Ag Heizkraftwerk
US4168030A (en) 1976-10-22 1979-09-18 Timmerman Robert W Waste heat utilization system
FR2517816B1 (fr) * 1981-12-09 1987-05-22 Cem Comp Electro Mec Systeme de distribution d'eau de refroidissement pour aerorefrigerant

Also Published As

Publication number Publication date
KR100408325B1 (ko) 2004-03-18
KR19990071826A (ko) 1999-09-27
RU2164330C2 (ru) 2001-03-20
US6276446B1 (en) 2001-08-21
CA2240099A1 (fr) 1997-06-19
ES2143805T3 (es) 2000-05-16
JP2000501827A (ja) 2000-02-15
UA41465C2 (uk) 2001-09-17
EP0865596A2 (fr) 1998-09-23
CN1131985C (zh) 2003-12-24
MY115885A (en) 2003-09-30
AU707461B2 (en) 1999-07-08
DE59604506D1 (en) 2000-03-30
AU1766097A (en) 1997-07-03
WO1997021966A3 (fr) 1997-08-14
CN1200170A (zh) 1998-11-25
IN192591B (fr) 2004-05-08
CA2240099C (fr) 2004-07-06
JP3839488B2 (ja) 2006-11-01
WO1997021966A2 (fr) 1997-06-19

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