EP0967451A1 - Condenseur de vapeur - Google Patents

Condenseur de vapeur Download PDF

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Publication number
EP0967451A1
EP0967451A1 EP98810581A EP98810581A EP0967451A1 EP 0967451 A1 EP0967451 A1 EP 0967451A1 EP 98810581 A EP98810581 A EP 98810581A EP 98810581 A EP98810581 A EP 98810581A EP 0967451 A1 EP0967451 A1 EP 0967451A1
Authority
EP
European Patent Office
Prior art keywords
plates
steam
side plates
cooling tubes
condenser
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Withdrawn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
EP98810581A
Other languages
German (de)
English (en)
Inventor
Michel Dr. Arnal
Miroslova Kopelent
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
ABB Alstom Power Switzerland Ltd
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 Alstom Power Switzerland Ltd, ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Alstom Power Switzerland Ltd
Priority to EP98810581A priority Critical patent/EP0967451A1/fr
Priority to AU35763/99A priority patent/AU3576399A/en
Priority to IDP990596A priority patent/ID23002A/id
Priority to HU9902161A priority patent/HUP9902161A2/hu
Publication of EP0967451A1 publication Critical patent/EP0967451A1/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Withdrawn legal-status Critical Current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
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F28B9/10—Auxiliary systems, arrangements, or devices for extracting, cooling, and removing non-condensable gases
    • 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 steam condenser of any size with cooling water flowed through cooling tubes, which are combined in tube bundles and by Support plates are supported, being in each tube bundle for the purpose of accumulation and Extraction of non-condensable gases an air cooler is arranged.
  • the invention relates to a device for directing the flow of steam into free spaces between an upper and lower bundle part in the area of Air cooler in which there are no cooling pipes.
  • the cooling water for the two-flow condenser shown there flows from a water chamber through the cooling pipes into the deflection chamber, from where it goes through further cooling pipes flow back into the first water chamber.
  • the water chamber is divided by partitions: at the locations of the partitions in the water chamber there are no cooling pipes.
  • Three rows of are missing here Cooling tubes, which result in free spaces in the tube bundles.
  • Also in the No cooling pipes can be arranged in the zone of the suction pipe. Because these are free Rooms located near the cooler could have steam through these rooms flow directly to the air coolers.
  • To allow the cooler to flow directly prevent vapor barriers from baffling in the open spaces Sheets installed These are led through openings in the support plates and welded to the support plate. On the one hand, the sheets hinder the direct Steam flow to the air coolers. On the other hand, they allow steam to flow from the top half of the tube bundle above the level of the air cooler lower half of the tube bundle below the level of the air cooler.
  • Another well-known vapor barrier against direct steam flow to the coolers consists of two to three rows of so-called "blind pipes" made of solid material are created. These form an effective vapor barrier, but also hinder the steam flow from the upper half of the bundle into the lower half of the bundle, thereby the condenser pressure increases and unnecessary amounts of uncondensed Steam get into the air cooler. The performance of the steam condenser will thereby reduced.
  • the blind pipes have the disadvantage that they cost and are expensive in terms of material and a significant weight compared to sheet metal to have.
  • the device should be inexpensive and compared to the state of the Technology have a lower weight.
  • the vapor barrier in the area of the air cooler locking plates has, which are perpendicular to the direct steam flow to the cooler, wherein each locking plate consists of three parallel partial plates.
  • the locking plates are arranged several times, the number of sheets being the size of the Tube bundle is dependent.
  • the number of locking plates moves in practice between four and seven.
  • the locking plates extend between the length the tube sheets and each consist of two side plates and a middle plate, the are passed through openings in the support plates.
  • the side panels show especially on those edges facing the upper and lower half of the bundle are grooves at the level of the support plates.
  • each vapor barrier from three partial sheets, of which the side sheets have grooves, serves to keep the distance between the sheets of the vapor barrier and the nearest cooling tubes to a minimum.
  • the two side plates are first passed through each opening in the support plates and arranged so that the grooves on the side plates are at the level of the support plates.
  • the side panels are then hung in the support plates.
  • the middle plate is finally inserted between the two side plates, whereby the side plates are pressed apart and by means of the grooves mesh with the support plates and are fixed.
  • the advantage of the vapor barrier according to the invention lies in the use of the grooves through which the sheets interlock with the support plates.
  • each locking plate comes closer to the cooling tubes than the openings in the support plates, so that the distance between the edge of a locking plate and the adjacent cooling tubes is less than the minimum distance that must exist between openings in the support plate for manufacturing reasons.
  • the flow resistance of an individual locking plate is increased by less steam passing between the locking plate and the cooling tube. Fewer barrier plates are therefore necessary for an adequate vapor barrier, and the material expenditure for the entire vapor barrier is less than with known vapor barriers Blind pipes ". This results in lower costs and a lower weight of the device.
  • the assembly time is also reduced compared to known vapor barriers, since a smaller number of locking plates has to be installed.
  • FIG. 1 shows one type of steam condenser in which the invention is embodied can be.
  • a steam condenser 1 of a cylindrical type is shown here with a steam jacket 2, which surrounds the cooling tubes 5, these being in tube bundles 4 are summarized.
  • the cooling tubes 5 are at their ends in tube plates 7 anchored and supported by a plurality of support plates 6 by drilling in the support plates 6 are passed.
  • the cooling tubes 5 are in rows here arranged.
  • the cooling water reaches the water chamber 8 via the water inlet connection 10, from where it flows through the cooling tubes 5 of one half of the tube bundle 4. It is in the water chamber 8 deflected at the other end of the condenser 1 flows then through the cooling tubes 5 of the second half of the tube bundle 4 and leaves the Condenser 1 via the water outlet connection 9 of the water chamber 8. Die Water chamber 8 is in the case of this two-flow condenser through partitions 18 divided.
  • the steam from a turbine enters the condenser neck 3 Steam room into where it penetrates into the tube bundle 4 via flow passages and is deposited on the cooling tubes 5.
  • the resulting condensate runs over the tubes 5 down into a condensate collector, called Hotwell 20. Purpose Removal of non-condensable gases is in the zone of the lowest pressure an air cooler 11 is arranged in a tube bundle 4. Not enough here condensable gases from the. via a suction line, not shown here Condenser 1 are suctioned off.
  • a support plate 6 is shown, through which at each intersection Diagonal lines leads a cooling pipe.
  • slot-shaped openings 13 are arranged on both sides of the coolers 11. These serve for the introduction of sheets to block a steam flow directly to the cooler 11.
  • Each of the locking plates that are passed through the openings 13 consists of three partial sheets shown in Figure 3.
  • two side plates 14 are shown, the one of its edges have grooves 15 at regular intervals.
  • Between Side plates 14 is a middle plate 16.
  • the three sheet metal parts are through the openings in the support plates 6 passed and extend over the Length between the two tube sheets 7.
  • the slit-shaped openings are first made in the support plates 13 burned for the locking plates and then drilled the holes for the cooling tubes. There must be a minimum distance between the openings and the drill holes of for example, 5 mm are observed.
  • the Side plates 14 From the locking plates are the Side plates 14 first introduced, the grooves 15 exactly at the level of Support plates 6 are brought. The center plate 16 is then between the Side plates inserted, the side plates being pushed apart, so that the sheets interlock with the support plates 6 through the grooves 15. The Side plates 14 are finally welded to the support plates 6.
  • With the Grooves 15 ensures that the distance between the edges of the side plates 14 and the first adjacent cooling tubes 5 is smaller than the minimum distance between the openings 13 and the boreholes. This distance is for example 3 mm.
  • the cooler 11 is at least two of these at each sight three-part sheets arranged to ensure a sufficient vapor barrier. Due to the small number of necessary barrier plates, the steam flow is from well ensured upper half in the lower half of the tube bundle 4.
  • Sheets of 5 mm thickness, for example, are used for the vapor barrier. There only a very small number of sheets is required comparatively modest material and cost. Compared to the solution mentioned at the beginning with filled "blind pipes" is for the Vapor barrier according to the invention, for example in the case of a steam condenser 10 m length, up to 6 tons less material used.
  • the vapor-air mixture accumulated in the air coolers 11 is over Suction lines sucked out of the condenser.
  • Figure 2 is with a dashed line the course of suction lines 19 is shown.
  • the suction lines 19 are through here Openings in the sheets of the vapor barrier lead outwards.
  • the condenser neck is at the top arranged.
  • the condenser neck is arranged laterally, and the The condenser is installed at ground level to the turbine.
  • the Suction lines arranged vertically near the one tube sheet; they run between the tube sheet and the end of the vapor barrier upwards.
  • the condenser housing To support the condenser housing are between the tube sheets according to Figure 2 arranged supports or tie rods 21.
  • Form the sheets of the vapor barriers also a mechanical support of the housing and can function as support a tie rod. This may enable the number of tie rods 21 be reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP98810581A 1998-06-24 1998-06-24 Condenseur de vapeur Withdrawn EP0967451A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP98810581A EP0967451A1 (fr) 1998-06-24 1998-06-24 Condenseur de vapeur
AU35763/99A AU3576399A (en) 1998-06-24 1999-06-18 Steam condenser
IDP990596A ID23002A (id) 1998-06-24 1999-06-21 Kondenser uap
HU9902161A HUP9902161A2 (hu) 1998-06-24 1999-06-23 Gőzkondenzátor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98810581A EP0967451A1 (fr) 1998-06-24 1998-06-24 Condenseur de vapeur

Publications (1)

Publication Number Publication Date
EP0967451A1 true EP0967451A1 (fr) 1999-12-29

Family

ID=8236154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810581A Withdrawn EP0967451A1 (fr) 1998-06-24 1998-06-24 Condenseur de vapeur

Country Status (4)

Country Link
EP (1) EP0967451A1 (fr)
AU (1) AU3576399A (fr)
HU (1) HUP9902161A2 (fr)
ID (1) ID23002A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1503162A3 (fr) * 2003-07-30 2010-08-11 Kabushiki Kaisha Toshiba Condenseur

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113686166B (zh) * 2021-08-23 2022-08-02 杭州国能汽轮工程有限公司 一种大长径比侧向进汽凝汽器的空冷区布置方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2453662A (en) * 1944-03-02 1948-11-09 Graham Mfg Co Inc Condenser
GB1211126A (en) * 1967-09-08 1970-11-04 Bbc Brown Boveri & Cie Improvements in and relating to a vapour condenser
US4226283A (en) * 1976-08-27 1980-10-07 Hitachi, Ltd. Multitubular heat exchanger
EP0325758A1 (fr) 1988-01-22 1989-08-02 Asea Brown Boveri Ag Condenseur de vapeur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2453662A (en) * 1944-03-02 1948-11-09 Graham Mfg Co Inc Condenser
GB1211126A (en) * 1967-09-08 1970-11-04 Bbc Brown Boveri & Cie Improvements in and relating to a vapour condenser
US4226283A (en) * 1976-08-27 1980-10-07 Hitachi, Ltd. Multitubular heat exchanger
EP0325758A1 (fr) 1988-01-22 1989-08-02 Asea Brown Boveri Ag Condenseur de vapeur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1503162A3 (fr) * 2003-07-30 2010-08-11 Kabushiki Kaisha Toshiba Condenseur

Also Published As

Publication number Publication date
HUP9902161A2 (hu) 2000-03-28
AU3576399A (en) 2000-01-13
ID23002A (id) 1999-12-30
HU9902161D0 (en) 1999-08-30

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