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EP0957325A1 - Condenseur de vapeur - Google Patents

Condenseur de vapeur Download PDF

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Publication number
EP0957325A1
EP0957325A1 EP98810440A EP98810440A EP0957325A1 EP 0957325 A1 EP0957325 A1 EP 0957325A1 EP 98810440 A EP98810440 A EP 98810440A EP 98810440 A EP98810440 A EP 98810440A EP 0957325 A1 EP0957325 A1 EP 0957325A1
Authority
EP
European Patent Office
Prior art keywords
condenser
tube
steam
tie rods
bundles
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Withdrawn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
EP98810440A
Other languages
German (de)
English (en)
Inventor
Peter Dr. Baumann
Vaclav Svoboda
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.)
ABB Asea Brown Boveri Ltd
ABB AB
Original Assignee
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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 ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Priority to EP98810440A priority Critical patent/EP0957325A1/fr
Publication of EP0957325A1 publication Critical patent/EP0957325A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/20—Fastening; Joining with threaded elements
    • F28F2275/205—Fastening; Joining with threaded elements with of tie-rods

Definitions

  • the invention relates to a steam condenser, such as for a power plant, with a steam jacket that has a plurality of condenser tubes encloses, which are combined in tube bundles and anchored in tube sheets, and with water chambers connected to the tube sheets and from which Cooling water flows through the pipes so that steam is deposited on the pipes becomes.
  • the invention relates to a support for tube sheets, which are not are completely filled with anchored pipes because the pipe bundle the steam room only partially fill and free flow channels between the tube bundles consist.
  • Such a steam condenser is known for example from CH 423 819.
  • Capacitors that are suitable for placement under the turbine are the Condenser tubes combined in elongated bundles, these vertically standing next to each other and surrounded by a steam jacket.
  • the Pipes are anchored at both ends in tube sheets. Parallel to these Tube sheets are each arranged a water chamber, one wall through which Tube plates is formed and from which the cooling water flows into the tubes.
  • Of the Steam flows from the turbine through an exhaust pipe and over it Capacitor neck on the upper side of the capacitor in the capacitor housing and is distributed in the steam room via flow channels.
  • the tube bundle have "church window-like" cross-sections, the cross-section of Flow channels, or the middle streets, each of the same order of magnitude like that is the bundle itself. Due to the loose arrangement of the bundles and only partially filling the steam room with cooling pipes has the advantage that the flow to the outside tubes of the bundle without significant pressure loss become.
  • the condensate that forms on the pipes flows between the pipes directly into a condensate collector.
  • Enclose the tubes of each bundle each also like a jacket in the middle of the bundle, in which a Air cooler is not installed for the purpose of accumulation and extraction condensable gases.
  • EP 0 384 200 describes a capacitor in which the above described bundle concept is retained, but the tube bundle in their Longitudinal extension horizontally and one above the other.
  • the bundle concept again has the advantage that it is Capacitor type, like the one described above, for various power plants Size is suitable by adding an appropriate number of bundles in a modular manner be put together.
  • tube bundle has the further advantage of having a smaller floor area needed and is arranged at ground level with the turbine, creating a basement the turbine is spared.
  • the condenser tubes are in turn on both Anchored ends in tube sheets, each of which one wall of the adjoining Form water chambers.
  • the steam flows through an exhaust pipe Condenser neck on the side of the condenser housing into the vapor space and is distributed through flow channels, or middle streets, between the bundles.
  • the resulting condensate runs over metal sheets into a collecting pipe and becomes the Water-steam cycle fed.
  • an asymmetrically designed air cooler installed in a cavity in the middle of each bundle.
  • the through the flow channels induced flow conditions in the bundle and the resulting resulting pressure field conditioning are horizontal as well as vertical Arrangement of the bundles similar. This allows a similar for both arrangements Structure of the air cooler in the cavity of the bundle.
  • Concept of the described bundle shape with built-in air cooler for both vertical as well as horizontal modular arrangement of the bundles is suitable.
  • the tube sheets serve to anchor the condenser tubes, and the tubes support the tube sheets, the pressure load of the water in the water chambers are exposed.
  • the steam room is not completely filled with pipes, and in the tube sheets result in places where no tubes are anchored.
  • the Pipe trays without the support of the pipes the water pressure from the water chambers exposed.
  • the tubes on the periphery of the bundle are also very large heavily burdened.
  • the above mentioned Condenser models with vertical and horizontal bundle arrangement Water chambers relieve the tube plates from the pressure of the water and the Side walls of the water chambers support those places where no pipes are anchored are.
  • this is done by a capacitor according to the preamble of Claim 1 solved, one or more rigid between the tube sheets Has connections that support the tube sheets. Are in an execution these rigid connections are realized by tie rods between the tube sheets, which the pressurized points in the tube sheets and the tubes on the Relieve the periphery of the tube bundle.
  • the water chambers of such steam condensers have, for example domed shape, of which those half-cylindrical water chambers have the advantage that they are angular compared to others Chambers, are cheaper.
  • semi-cylindrical water chambers there are pressure forces of the water, which the edge pipes Load the bundle and the tube sheets in those places where there are no tubes and none Steam jacket walls are present, such as in the area of the flow channels, the condenser neck and the condensate collector in the Version with integral hotwell.
  • These compressive forces are proportional to the radius of the Chamber and can bend the tube sheets, so that the joints between Pipes and tube sheets can leak.
  • the tie rods according to the invention relieve these points by stiffening and supporting the tube sheets there.
  • the Invention is for condensers with tube bundles in both horizontal and vertical arrangement applicable, i.e. for capacitors that are at ground level to or are located under the turbine.
  • the condenser 1 with the turbine 2 via an exhaust pipe 3 and Condenser neck 4 arranged at ground level.
  • the steam room contains condenser tubes 6, which are combined in tube bundles 7, and is of a steam jacket 5 enclosed.
  • the tube bundles 7 are arranged horizontally and one above the other.
  • the steam flows through the evaporation nozzle 3 via the condenser neck 4 into the Steam room, where it via the flow channels 9 between the tube bundles 7 to Tubes 6 arrives and is deposited there.
  • the condensate runs into Manifold and into a condensate collection vessel 11, from where it is not in the water-steam cycle shown is returned.
  • the Tube bundle 7 arranged horizontally, being supported by bundle supports 12 and in Tube plates 13 are anchored.
  • the cooling water flows in this embodiment via water connector 14 and semi-cylindrical water chambers 15 through the pipes 6, wherein the water in the water chambers 15 presses on the tube sheets 13.
  • the Water chambers 15 are through a partition in two parts for the through Arrows indicated water inlet or outlet divided.
  • semi-cylindrical Water chambers are also further versions of the water chambers here conceivable, such as square water chambers, such with Hemispherical shape or those that are similar to a dome vault of several curved surfaces of any outline are joined together.
  • the tube bundle 7 can be seen here as a pair of tube bundles, with the water in one tube Bundles of the pair in one direction, in the other bundle in the other Flows through.
  • tie rods 16a are provided. These are in this area the condenser neck 4, where there is no support of the tube sheets 13 by the steam jacket is available.
  • FIG 3 are in a capacitor 1 for an arrangement under the turbine Pipe bundle 7 arranged vertically next to each other.
  • tie rods 16a in Area of the condenser neck 4
  • tie rod 16b between the tube bundles 7
  • tie rods 16c under the tube bundles 7 at the opening to one integral condensate collection vessel 11, which extends over the entire floor area of the capacitor extends attached.
  • the tube sheets would be below the Deflect the water pressure, the greatest deformation being at the height of the largest bulge of the water chamber 15 would result.
  • the pipes in the The center of the bundle would be under pressure, the tensile load at the edge of the bundle. To one This load is taken up by the walls of the steam jacket 5. Where such are not available, the tubes 6 and the tube sheets 13 are through relieved the tie rods.
  • FIG 4 shows an arrangement of the tie rods in a vertical condenser Pipe bundles 7.
  • the tie rods take on the pressure forces where there is no relief through a steam jacket wall or a condenser bottom.
  • the anchors 16a are located at the top of the condenser neck 4, the anchors 16b in one Mittelgasse 9 between the tube bundles 7.
  • the anchors 16c support the tube sheets below at the opening to the condensate collector 11.
  • capacitors with vertically arranged bundles as in Figures 3 and 4 are the water chambers, as shown in Figure 3, arranged horizontally. But you can too be arranged vertically and next to each other. In this case there are tie rods 16b and c necessarily arranged at the level where the water chambers on most booked out and the water pressure on the tube sheets is increased.
  • the steam flows in from above the capacitor into it.
  • the tie rods are therefore narrow and vertical drawn out.
  • the Steam from the side into the condenser, and the tie rods 16a and 16b are aligned with this steam flow direction so that its longer dimension runs parallel to the steam flow from the condenser neck into the steam chamber and it put up minimal resistance.
  • the tie rods 16c in the area of the capacitor bottom 18 affect the steam flow only slightly and can have any shape have such as one with a U-profile.
  • the tie rods provided have insignificant effects in the event of thermal expansion Tensions. On the one hand, this is due to the relatively small temperature difference guaranteed between tie rods and steam jacket. On the other hand, they are Tie rods sufficiently spaced from the steam jacket.
  • the embodiment is in Figure 2 on a capacitor in a side arrangement shown to the turbine.
  • the invention is also in capacitors in Other arrangements applicable, such as those in an axial arrangement to the turbine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP98810440A 1998-05-14 1998-05-14 Condenseur de vapeur Withdrawn EP0957325A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98810440A EP0957325A1 (fr) 1998-05-14 1998-05-14 Condenseur de vapeur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98810440A EP0957325A1 (fr) 1998-05-14 1998-05-14 Condenseur de vapeur

Publications (1)

Publication Number Publication Date
EP0957325A1 true EP0957325A1 (fr) 1999-11-17

Family

ID=8236084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810440A Withdrawn EP0957325A1 (fr) 1998-05-14 1998-05-14 Condenseur de vapeur

Country Status (1)

Country Link
EP (1) EP0957325A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1126227A1 (fr) * 2000-02-09 2001-08-22 ALSTOM POWER (Schweiz) AG Condenseur de vapeur
EP1189005A1 (fr) * 2000-07-11 2002-03-20 Alstom (Switzerland) Ltd Col de condensation entre une turbine a vapeur et une condensateur
EP1260782A1 (fr) * 2001-05-21 2002-11-27 ALSTOM (Switzerland) Ltd Condenseur de vapeur
DE102008050741A1 (de) 2008-10-08 2010-04-15 Blumenfeld, Nikolai Mehrschichtiges Bausystem
CN113251818A (zh) * 2021-06-25 2021-08-13 哈尔滨汽轮机厂辅机工程有限公司 一种圆筒内呈翼形管束布置的凝汽器

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB121510A (en) * 1917-12-15 1918-12-16 Arthur Edwin Leigh Scanes Improvements in or relating to Surface Condensers.
GB130591A (en) * 1918-07-27 1919-12-18 Maurice Delaporte Improvements in Surface Condensers.
FR529304A (fr) * 1920-12-31 1921-11-26 Ange Francois Meffre Condenseur à surface pour machines marines
US2111240A (en) * 1936-02-19 1938-03-15 Worthington Pump & Mach Corp Surface condenser
CH423819A (de) 1965-01-15 1966-11-15 Bbc Brown Boveri & Cie Kondensationsanlage für Dampfturbinen-Abdampf
GB1326866A (en) * 1971-04-05 1973-08-15 Tokyo Shibaura Electric Co Surface condenser
FR2241218A7 (en) * 1973-08-14 1975-03-14 Bbc Brown Boveri & Cie Tube-type surface condenser - has tube bundle support plates and sleeve portion forming self-supporting unit
EP0384200A1 (fr) 1989-02-23 1990-08-29 Asea Brown Boveri Ag Condenseur à vapeur
US5060600A (en) * 1990-08-09 1991-10-29 Texas Utilities Electric Company Condenser operation with isolated on-line test loop

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB121510A (en) * 1917-12-15 1918-12-16 Arthur Edwin Leigh Scanes Improvements in or relating to Surface Condensers.
GB130591A (en) * 1918-07-27 1919-12-18 Maurice Delaporte Improvements in Surface Condensers.
FR529304A (fr) * 1920-12-31 1921-11-26 Ange Francois Meffre Condenseur à surface pour machines marines
US2111240A (en) * 1936-02-19 1938-03-15 Worthington Pump & Mach Corp Surface condenser
CH423819A (de) 1965-01-15 1966-11-15 Bbc Brown Boveri & Cie Kondensationsanlage für Dampfturbinen-Abdampf
GB1326866A (en) * 1971-04-05 1973-08-15 Tokyo Shibaura Electric Co Surface condenser
FR2241218A7 (en) * 1973-08-14 1975-03-14 Bbc Brown Boveri & Cie Tube-type surface condenser - has tube bundle support plates and sleeve portion forming self-supporting unit
EP0384200A1 (fr) 1989-02-23 1990-08-29 Asea Brown Boveri Ag Condenseur à vapeur
US5060600A (en) * 1990-08-09 1991-10-29 Texas Utilities Electric Company Condenser operation with isolated on-line test loop

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
F. H. S. BROWN ET AL.: "Reheat Practice in British Power Stations", PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS, vol. 172, no. 16, 1958, pages 585 - 600, XP002081046 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1126227A1 (fr) * 2000-02-09 2001-08-22 ALSTOM POWER (Schweiz) AG Condenseur de vapeur
US6360543B2 (en) 2000-02-09 2002-03-26 Alstom (Schweiz) Ag Steam condenser
EP1189005A1 (fr) * 2000-07-11 2002-03-20 Alstom (Switzerland) Ltd Col de condensation entre une turbine a vapeur et une condensateur
US6550249B2 (en) 2000-07-11 2003-04-22 Alstom (Switzerland) Ltd Condenser neck between a steam turbine and a condenser
EP1260782A1 (fr) * 2001-05-21 2002-11-27 ALSTOM (Switzerland) Ltd Condenseur de vapeur
WO2002095313A1 (fr) * 2001-05-21 2002-11-28 Alstom (Switzerland) Ltd Condenseur de vapeur
DE102008050741A1 (de) 2008-10-08 2010-04-15 Blumenfeld, Nikolai Mehrschichtiges Bausystem
CN113251818A (zh) * 2021-06-25 2021-08-13 哈尔滨汽轮机厂辅机工程有限公司 一种圆筒内呈翼形管束布置的凝汽器

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