EP1174672A2 - Centrale combinée ou à vapeur - Google Patents

Centrale combinée ou à vapeur Download PDF

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Publication number
EP1174672A2
EP1174672A2 EP01114086A EP01114086A EP1174672A2 EP 1174672 A2 EP1174672 A2 EP 1174672A2 EP 01114086 A EP01114086 A EP 01114086A EP 01114086 A EP01114086 A EP 01114086A EP 1174672 A2 EP1174672 A2 EP 1174672A2
Authority
EP
European Patent Office
Prior art keywords
water
steam
cooling
heat exchange
jacket
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Withdrawn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
EP01114086A
Other languages
German (de)
English (en)
Other versions
EP1174672A3 (fr
Inventor
Mustafa Dr. Youssef
Vaclaf Svoboda
Pengcheng Zhang
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.)
General Electric Switzerland GmbH
Original Assignee
Alstom Schweiz 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 Alstom Schweiz AG filed Critical Alstom Schweiz AG
Publication of EP1174672A2 publication Critical patent/EP1174672A2/fr
Publication of EP1174672A3 publication Critical patent/EP1174672A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/02—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium

Definitions

  • the invention relates to a combination or steam power plant with an apparatus for Condensation of turbine steam and cooling of water from one In addition to the cooling circuit.
  • Steam condensers in combination or steam power plants are generally known.
  • the expanded turbine steam is led into a steam chamber enclosed by a steam jacket, where it is deposited on cooled pipes, which are arranged in pipe bundles.
  • the condensate formed on the pipes flows down into a hotwell, from where it is carried on in the water-steam cycle.
  • To cool the condenser tubes cooling water is taken from a natural river, for example in the case of a closed circuit, and passed through the tubes, after which it is returned to the river.
  • the cooling water is also used for other purposes in the combined or steam power plant, such as for cooling water or condensate in a secondary cooling circuit with a water-water cooler.
  • FIG. 1 shows a cooling system for a steam power plant according to the prior art.
  • the coolant is taken from a river by means of a main cooling water pump 1 and a line 2, for example. Part of this river water is supplied to the water inlet chambers 3 of a steam condenser 4. From there it flows through the cooling pipes of the steam condenser, for example a single-flow condenser system, is collected in water outlet chambers 5 and from there is finally returned to the river via line 6.
  • the steam condenser can also contain a two-flow system with a deflection chamber (not shown here).
  • the river water is branched off from line 2 and fed to one or more separate apparatuses, one or more water-water coolers 9 by means of a second pump 7 via line 8. After flowing through these coolers 9, the river water is again conducted into the return line 6.
  • the water-water cooler 9 basically consists of a jacket which encloses a heat exchange or cooling space with cooling pipes, a water inlet chamber 10, a water outlet chamber 11 and, in the case of a two-flow system, a water deflection chamber.
  • the cooling water and the cooling circuit liquid, the pure water flow in countercurrent through the cooler, the cooling water flowing through the cooling tubes and the pure water flowing around the cooling tubes.
  • the river water is in the water inlet chamber 10 to the cooling tubes, flows from there through the cooling tubes, possibly also a deflection chamber, and is again collected in the water outlet chamber 11, after which it is fed to the return line 6 via a line.
  • the pure water or condensate to be cooled is led via lines 12 to the water-water cooler, flows around the cooling pipes through which the river water flows, the flow path of the pure water being extended by baffles and baffles, and leaves the cooler via lines 13.
  • the water-water cooling normally consists of two or more identical devices that are connected in parallel.
  • the steam condenser is located in the machine house.
  • a Steam power plant is an arrangement of water-water coolers within as well as outside the machine house. With a combination system however, the space is sufficient for an arrangement of water-water coolers not from why they are located outside the nacelle are. There are more for the supply of the cooling water to the water-water cooler Pumps and lines necessary.
  • a combination or steam power plant with an apparatus for steam condensation and water-water cooling, for which the same coolant is used, according to claim 1.
  • steam condensation and water-water cooling are integrated in a single apparatus.
  • the apparatus has a steam or condenser jacket which encloses a steam space with bundles of cooling tubes for the steam condensation, the ends of the cooling tubes being anchored in tube sheets.
  • At least one heat exchange chamber for water-water cooling is attached to the outside of the steam jacket, the heat exchange room being enclosed by a part of the steam jacket and a second jacket part.
  • cooling pipes are arranged, the ends of which are anchored in the tube sheets.
  • the apparatus also has at least one common water inlet chamber for steam condensation and water-water cooling and at least one common water outlet chamber, each of which is formed on one side by the tube sheets for the cooling tubes for steam condensation and water-water cooling. From the common water inlet chamber, the cooling pipes for steam condensation lead through the steam room and the cooling pipes for water-water cooling through the heat exchange room for water-water cooling to the common water outlet chamber.
  • a coolant for example river water
  • a coolant for example river water
  • the second jacket part of the Heat exchange room for water-water cooling in the form of a semicircular cylinder formed.
  • this shape Given the pressure difference between the vapor space in which there is a vacuum and the Heat exchange room, in which there is a pressure of, for example, 5 bar, is suitable this shape best.
  • To support and strengthen the Condenser steam jacket provide pipe support plates that are used in the heat exchange space water-water cooling to support the cooling pipes and as chicanes Extension of the flow path of the pure water flowing on the jacket side are arranged, a contribution. They also serve to strengthen the Jacket of the heat exchange room for water-water cooling.
  • the second jacket part of the heat exchange space is for the Water-water cooling cylindrical, but not semicircular cylindrical, or cuboid in the manner of a box with corresponding supports or sufficient jacket thickness designed to reinforce the jacket walls.
  • the common one Water inlet chamber and water outlet chamber for the coolant for the Steam condensation and water-water cooling each divided into two parts.
  • the Cooling water flows from the first part of the water inlet chamber through the pipes in the first heat exchange room for water-water cooling and part of Pipes for steam condensation and is in the first part of the Water outlet chamber collected; from the second part of the water inlet chamber the cooling water flows through the pipes of the second heat exchange chamber for the Water-water cooling and another part of the pipes for the Steam condensation and is in the second part of the water outlet chamber collected.
  • the integrated apparatus has, for example, two Heat exchange rooms for water-water cooling as well as two common Water inlet and outlet chambers.
  • first Water inlet and water outlet chamber the cooling water for the first Heat exchange space and a first part of the steam condenser collected, while in the second water inlet and outlet chamber Cooling water for the second heat exchange space and a second part of the Steam condenser is collected.
  • the first part of the steam condenser consists for example of two tube bundles and the second part of two more Tube bundles.
  • the integrated apparatus is for Steam condensation and water-water cooling as a two-flow system designed and has at least one for steam condensation and Water-water cooling common deflection chamber for the cooling water.
  • Another apparatus is with the one described at the beginning Apparatus identical in that it has common water inlet chambers and Heat exchange rooms for water-water cooling, which are on the outside of the Steam jacket are grown.
  • the common one Water outlet chambers separate water outlet chambers for the cooling water for steam condensation and for cooling water for water-water cooling on and one or more water deflection chambers. These serve the Redirection of the cooling water for steam condensation or the cooling water for water-water cooling.
  • This apparatus contains for the Steam condensation is an inflow system for the cooling water and for water-water cooling a two-flow system for the cooling water.
  • the Apparatus for water-water cooling an inflow system for the cooling water and for the steam condensation a two-flow system for the cooling water.
  • the apparatus according to the invention has the primary advantage that Extension of the heat exchange room for water-water cooling and common water chambers of the integrated apparatus that There is no cooling water system for a separately placed water-water cooler and the coolant only by means of the main cooling water pump and without additional Pipes and auxiliary pumps to the cooling pipes for steam condensation as well for water-water cooling is supplied at the same time.
  • This is the Space requirements for water-water cooling are greatly reduced and for combination and Steam power plants place the water-water cooling within the Nacelle or with steam power plants enables space savings.
  • instead of two or more devices there is now a single device necessary, reducing the cost of design, manufacture and installation as well as for testing, operational safety and maintenance are reduced.
  • there is only one for the integrated apparatus according to the invention only pipe cleaning system necessary, which the pipes for the Both steam condensation and water-water cooling are waiting can.
  • FIG. 2 shows the integrated apparatus according to the invention for steam condensation and water-water cooling.
  • a main cooling water pump 1 supplies river water or cooling water from another source, such as a cooling tower, via line 2 to the integrated apparatus 20.
  • the cooling water is first collected in two water inlet chambers 21, common for steam condensation and water-water cooling, where it is simultaneously distributed to the cooling pipes in the steam room for steam condensation and to the cooling pipes of one of the two heat exchange rooms 23 for water-water cooling. After flowing through these cooling tubes, it arrives in the common water outlet chambers 24, in which it is again collected and which it leaves via lines. These lines finally lead to the return line 6, which returns the cooling water to the river or cooling tower.
  • Lines 25 and 26 are part of a secondary cooling circuit for water or condensate.
  • the former lead to the apparatus 20 through which the water or condensate to be cooled enters the heat exchange rooms 23. It is cooled there in the heat exchange with the cooling tubes and leaves the heat exchange spaces 23 via the lines 26.
  • the two heat exchange spaces 23 can be connected in parallel by lines 25 and 26.
  • the diagram shows common water inlet chambers 21 and common water outlet chambers 24 for steam condensation and water-water cooling. Cooling determined.
  • the second water inlet chamber and water outlet chamber are intended for the cooling tubes in the lower tube bundle in the steam chamber and the lower heat exchange chamber for water-water cooling. This division enables a part of the integrated apparatus to be switched off for partial load, inspection, pipe cleaning or maintenance.
  • the diagram also shows the common jacket walls for the steam room and the heat exchange room for water-water cooling. By integrating steam condensation and water-water cooling in a single device, the cooling water inflow and pipe cleaning system for water-water cooling is eliminated.
  • FIG. 3 and FIG. 4 represent a preferred embodiment of the integrated apparatus 20 according to the invention.
  • FIG. 3 shows the arrangement and preferred semicircular cylindrical shape of the heat exchange rooms for water-water cooling, which are connected to the steam jacket for steam condensation.
  • a steam jacket 30 encloses a steam chamber 31 for steam condensation with a plurality of tube bundles 32 arranged horizontally and one above the other. Steam flows from the turbine into the steam chamber, where it is deposited on cooling pipes 33 through which cooling water flows. The resulting condensate is collected in Hotwell 34.
  • Two heat exchange spaces 41 for water-water cooling are arranged on an outer side of the steam jacket 30. Each heat exchange chamber 41 is enclosed by a part 43 of the steam jacket 30 and the semicircular cylindrical second jacket part 40 which is welded to the steam jacket 30.
  • the semicircular cylindrical shape of the second jacket part 40 is most suitable.
  • Other shapes for the second jacket part 40 such as, for example, rounded shapes or box shapes with correspondingly reinforced walls, can also be realized.
  • Cooling tubes 42 are arranged in the heat exchange spaces, which run parallel to the cooling tubes 33 in the steam space 31 and through which the same cooling water flows.
  • An inlet connector 44 and an outlet connector 45 are arranged on the second jacket part 40. Pure water or condensate flows through the inlet connection 44 into the heat exchange chamber 41 and flows around the cooling pipes 42 and arrives from the heat exchange chamber 41 via the outlet connection 45.
  • the apparatus shown has, for example, two common water inlet chambers and two common water outlet chambers, the first inlet and Outlet chambers for the upper heat exchange chamber and the two tube bundles arranged at the top in the steam space and the second inlet and outlet chambers for the lower heat exchange space and the two tube bundles arranged at the bottom are intended.
  • the arrangement of the common water chambers for water-water cooling and steam condensation is shown in FIG.
  • the common water inlet chamber 21 is arranged on a first side of the apparatus 20. River water or other cooling water is fed into the water inlet chamber 21 via inlet connections 27 or collected there. It then flows into the cooling tubes 33 and 42 for steam condensation or water-water cooling, which are anchored in the tube sheets 29.
  • On the opposite side of the apparatus 20 there is a common water outlet chamber 24 into which the cooling water flows and is collected. It then reaches the return line via outlet connection 27 '.
  • the water inlet and water outlet chambers can be divided by a horizontal partition wall (not shown here) or consist of two individual water inlet and water outlet chambers.
  • the cooling water from the water chamber parts or the individual water chambers flows through the integrated apparatus 20 as shown in FIG. 2.
  • the water to be cooled flows around the cooling tubes 42 and tube support plates 48, 48 ', which additionally support the steam jacket 30, 43 and the semicircular cylindrical jacket 40.
  • its flow path leads around a plurality of support plates, which at the same time serve as baffles or deflection plates 48, 48 ', which extends the cooling flow path.
  • the baffle plates 48 are each with the steam jacket part 43 and with a part of the semicircular cylindrical, second part man 40, while the baffle plates 48 'are welded with a large part of the semicircular cylindrical jacket 40.
  • the invention is applicable to combination and steam power plants, the steam condenser under the turbine and in which the turbine steam flows out in the vertical direction to the steam condenser. Furthermore, it can also be used in systems whose steam condenser is arranged at ground level with respect to the steam turbine and in which the turbine steam flows out into the steam condenser in a horizontal direction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP01114086A 2000-07-04 2001-06-09 Centrale combinée ou à vapeur Withdrawn EP1174672A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10031789 2000-07-04
DE10031789A DE10031789A1 (de) 2000-07-04 2000-07-04 Kombi-oder Dampfkraftanlage

Publications (2)

Publication Number Publication Date
EP1174672A2 true EP1174672A2 (fr) 2002-01-23
EP1174672A3 EP1174672A3 (fr) 2003-11-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01114086A Withdrawn EP1174672A3 (fr) 2000-07-04 2001-06-09 Centrale combinée ou à vapeur

Country Status (3)

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US (1) US20020005276A1 (fr)
EP (1) EP1174672A3 (fr)
DE (1) DE10031789A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2878907A1 (fr) * 2013-11-28 2015-06-03 Alstom Technology Ltd Condenseur intégré

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7127597B2 (en) * 2002-09-24 2006-10-24 Novell, Inc. Mechanism for controlling boot decisions from a network policy directory based on client profile information
CN103900396B (zh) * 2012-12-26 2016-03-16 赵吉焕 减少白烟发生装置及利用其的废热及用水回收方法
CN105793659B (zh) * 2014-01-23 2018-05-01 三菱日立电力系统株式会社 冷凝器

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE33127C (de) * W. W. BEAUMONT in London SE. Norwood Road Herne Hill Neuerung an Oberflächen-Kondensatoren
US1684154A (en) * 1923-03-03 1928-09-11 Westinghouse Electric & Mfg Co Condenser
US1637558A (en) * 1926-09-15 1927-08-02 Frank M Doyle Surface condenser and method
US1900504A (en) * 1930-11-25 1933-03-07 Ingersoll Rand Co Condensing apparatus
US2360408A (en) * 1941-04-16 1944-10-17 Dunn Ned Method of and means for preheating fuel oil
US2328045A (en) * 1941-07-25 1943-08-31 Buena Vlsta Iron Company Feed-water heater
US2340138A (en) * 1941-12-31 1944-01-25 Lummus Co Heat exchanger
US2729430A (en) * 1954-05-10 1956-01-03 Alco Products Inc Heat exchanger
US2986454A (en) * 1957-07-23 1961-05-30 American Cyanamid Co Tubular catalytic converter
DE2539440C3 (de) * 1975-09-04 1979-06-07 Linde Ag, 6200 Wiesbaden Wärmetauscher mit zwei ineinander angeordneten zylindrischen Behältermänteln, die Ringräume bilden
US4437322A (en) * 1982-05-03 1984-03-20 Carrier Corporation Heat exchanger assembly for a refrigeration system
DE3302304A1 (de) * 1983-01-25 1984-07-26 Borsig Gmbh, 1000 Berlin Waermetauscher zum kuehlen von heissen gasen, insbesondere aus der ammoniak-synthese
US5509466A (en) * 1994-11-10 1996-04-23 York International Corporation Condenser with drainage member for reducing the volume of liquid in the reservoir
US6276442B1 (en) * 1998-06-02 2001-08-21 Electric Boat Corporation Combined condenser/heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2878907A1 (fr) * 2013-11-28 2015-06-03 Alstom Technology Ltd Condenseur intégré

Also Published As

Publication number Publication date
DE10031789A1 (de) 2002-02-28
US20020005276A1 (en) 2002-01-17
EP1174672A3 (fr) 2003-11-05

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