EP0079648A1 - Centrale à vapeur - Google Patents

Centrale à vapeur Download PDF

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Publication number
EP0079648A1
EP0079648A1 EP82201400A EP82201400A EP0079648A1 EP 0079648 A1 EP0079648 A1 EP 0079648A1 EP 82201400 A EP82201400 A EP 82201400A EP 82201400 A EP82201400 A EP 82201400A EP 0079648 A1 EP0079648 A1 EP 0079648A1
Authority
EP
European Patent Office
Prior art keywords
coolant
heat exchanger
power plant
steam power
intercooler
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.)
Granted
Application number
EP82201400A
Other languages
German (de)
English (en)
Other versions
EP0079648B1 (fr
Inventor
Andreas Brand
Hans Kogler
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Priority to AT82201400T priority Critical patent/ATE22153T1/de
Publication of EP0079648A1 publication Critical patent/EP0079648A1/fr
Application granted granted Critical
Publication of EP0079648B1 publication Critical patent/EP0079648B1/fr
Expired 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
    • F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
    • F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat

Definitions

  • the present invention relates to a steam power plant according to the preamble of claim 1.
  • the heat absorbed by the cooled parts of the system and released to a secondary cooling water is transferred to the atmosphere, which means thermodynamically a loss and represents an environmental impact.
  • the advantage of the invention can be seen in the fact that the additional heat output to the main circuit improves its process efficiency or increases the output power.
  • the temperature of the intermediate coolant in front of the system components can be optimally set.
  • 1 denotes an intermediate cooling circuit with a circulating pump 4, which works independently of the working medium of a main circuit 12 and of the condenser coolant 17.
  • the system components 2, 3 to be cooled, for example slide bearings, pumps or the like, are in the intermediate cooling circuit 1, 1 '. and the intercooler 7 flows through water as an intercooler in a closed circuit. In the intercooler 7, the waste heat is given off to the secondary coolant, for example river water.
  • a regenerative heat exchanger 8 is arranged in the main circuit 12 according to the invention. Because of the prevailing temperatures, this is switched into the main condensate line 18 between the main condensate pump 14 following the condenser 13 and the preheating line 16, which is only indicated. On the coolant side, this regenerative heat exchanger 8 branches off from the intercooling circuit 1 via the line l t , between the circulating pump 4 and the intercooler 7 cooling components 2, 3 is admixed with the medium that may have cooled in the intercooler 7. Regenerative heat exchanger 8 and intercooler 7 are thus connected in parallel.
  • the distribution of the coolant flows flowing through the two devices 7, 8 takes place as a function of the coolant temperature upstream of the system components to be cooled.
  • the temperature is measured using known means at a measuring point 11, which is arranged downstream of the reunification point in such a way that the two partial flows are well mixed.
  • the measurement signal is fed via the control line 10 to a controller 6, which controls the flow cross sections of a three-way valve 5.
  • the three-way valve 5 is located at the point in the intermediate cooling circuit 1 at which the line 1 'branches off to the regenerative heat exchanger 8.
  • the coolant heated in the system components can now only give off its heat in the regenerative heat exchanger 8, which means complete recovery.
  • the portion of the capacity which exceeds the capacity is fed to the intercooler 7 and, as is known, is cooled therein to the lowest possible temperature with secondary coolant 19.
  • the decisive factor for the distribution of the volume flows in the three-way valve 5 is in any case the inlet temperature of the coolant upstream of the system components 2, 3, which must be kept as constant as possible according to their needs for uniform and sufficient cooling. This cooling is thus guaranteed regardless of the respective system state, with a maximum of waste heat being recuperated and a minimum of waste heat being released to the environment, depending on the load delivered, the condenser coolant temperature and the secondary coolant temperature.
  • the arrangement according to the invention will be used particularly advantageously where relatively cold coolant 17 is available for the turbine condenser 13.
  • relatively cold coolant 17 is available for the turbine condenser 13.
  • FIG. 2 A further circuit possibility for the regenerative heat exchanger 8 according to the invention is shown in FIG. 2, in which the same elements are provided with the same reference symbols as in FIG. 1.
  • the regenerative heat exchanger 8 is connected in series with the intercooler 7 and is constantly flowed through by the intercooler. If the heat dissipation therein is insufficient, the intercooler 7 is switched on by opening the shut-off element 20. The secondary coolant mass flow is regulated on this shut-off device 20 in such a way that the desired temperature upstream of the system components 2, 3 is achieved.
  • the signal from the temperature measuring point 11 serves as the actuating variable for the controller 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
EP82201400A 1981-11-16 1982-11-08 Centrale à vapeur Expired EP0079648B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82201400T ATE22153T1 (de) 1981-11-16 1982-11-08 Dampfkraftwerk.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH7343/81 1981-11-16
CH734381 1981-11-16

Publications (2)

Publication Number Publication Date
EP0079648A1 true EP0079648A1 (fr) 1983-05-25
EP0079648B1 EP0079648B1 (fr) 1986-09-10

Family

ID=4323635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82201400A Expired EP0079648B1 (fr) 1981-11-16 1982-11-08 Centrale à vapeur

Country Status (4)

Country Link
EP (1) EP0079648B1 (fr)
AT (1) ATE22153T1 (fr)
DE (1) DE3273229D1 (fr)
DK (1) DK481182A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0597305A1 (fr) * 1992-11-07 1994-05-18 Asea Brown Boveri Ag Procédé de functionnement d'une centrale à cycle combiné
GB2292791A (en) * 1994-08-22 1996-03-06 Nash Engineering Co Using waste heat from pump seal liquid to preheat boiler feedwater

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110195619A (zh) * 2019-05-30 2019-09-03 中国水利水电科学研究院 火电机组调节系统、方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1741605A (en) * 1925-05-04 1929-12-31 Bbc Brown Boveri & Cie Power-plant installation
DE523899C (de) * 1924-04-24 1931-04-29 Otto Happel Vorrichtung zur Rueckgewinnung von Verlustwaerme bei elektrischen Maschinen, insbesondere mit Dampfturbinenantrieb
US2491314A (en) * 1946-10-14 1949-12-13 Gen Electric Turbogenerator cooling system
DE1053527B (de) * 1957-01-18 1959-03-26 Siemens Ag Dampfkraftanlage mit Rueckgewinnung von Verlustwaerme des Turbosatzes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1938077A (en) * 1929-05-03 1933-12-05 Ljungstroms Angturbin Ab Cooling device for closed electrical motors, generators, or the like machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE523899C (de) * 1924-04-24 1931-04-29 Otto Happel Vorrichtung zur Rueckgewinnung von Verlustwaerme bei elektrischen Maschinen, insbesondere mit Dampfturbinenantrieb
US1741605A (en) * 1925-05-04 1929-12-31 Bbc Brown Boveri & Cie Power-plant installation
US2491314A (en) * 1946-10-14 1949-12-13 Gen Electric Turbogenerator cooling system
DE1053527B (de) * 1957-01-18 1959-03-26 Siemens Ag Dampfkraftanlage mit Rueckgewinnung von Verlustwaerme des Turbosatzes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0597305A1 (fr) * 1992-11-07 1994-05-18 Asea Brown Boveri Ag Procédé de functionnement d'une centrale à cycle combiné
GB2292791A (en) * 1994-08-22 1996-03-06 Nash Engineering Co Using waste heat from pump seal liquid to preheat boiler feedwater
GB2292791B (en) * 1994-08-22 1998-03-11 Nash Engineering Co Heat recovery in a liquid ring pump seal liquid chiller system

Also Published As

Publication number Publication date
ATE22153T1 (de) 1986-09-15
EP0079648B1 (fr) 1986-09-10
DE3273229D1 (en) 1986-10-16
DK481182A (da) 1983-05-17

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