EP0729000A1 - Rohrbündel für Dampfkondensator - Google Patents

Rohrbündel für Dampfkondensator Download PDF

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Publication number
EP0729000A1
EP0729000A1 EP96400339A EP96400339A EP0729000A1 EP 0729000 A1 EP0729000 A1 EP 0729000A1 EP 96400339 A EP96400339 A EP 96400339A EP 96400339 A EP96400339 A EP 96400339A EP 0729000 A1 EP0729000 A1 EP 0729000A1
Authority
EP
European Patent Office
Prior art keywords
ears
cased
ring
thickness
tubes
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
EP96400339A
Other languages
English (en)
French (fr)
Other versions
EP0729000B1 (de
Inventor
Bernard Andrieux
Daniel Carpentier
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
General Electric Technology GmbH
Original Assignee
Alstom Power Heat Exchange SA
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 Power Heat Exchange SA filed Critical Alstom Power Heat Exchange SA
Publication of EP0729000A1 publication Critical patent/EP0729000A1/de
Application granted granted Critical
Publication of EP0729000B1 publication Critical patent/EP0729000B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
    • 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
    • F28D7/16—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 the conduits being arranged in parallel spaced relation
    • F28D7/163—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 the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to a tube bundle for a steam condenser, in which the trace, in a plane perpendicular to the axis of the tubes, of the envelope of the tubed zones of the bundle, is a trace of the type forming radiating spikes.
  • French Patent No. 1,391,661 describes a tubular bundle of this type.
  • each radiating ear which constitutes a tubed zone, an uncubed groove of triangular shape.
  • a bleeding is necessary for the passage of steam to the tubes of the two ears located on either side of the bleeding.
  • a groove "feeds" the tubes of a half-ear on either side of the groove.
  • the section required for a bleeding which is a non-cased surface necessary for the passage of steam to the two half-ears framing the bleeding, is proportional to the number N of tubes of the two adjacent half-ears and to the height H of the groove.
  • the power exchanged in a tube bundle is proportional to the exchange surface and therefore to the number of tubes.
  • the present invention therefore aims to allow a better filling coefficient of the tubed area relative to the total cross section of the bundle thus reducing the dimensions of the tubular bundle for the same number of tubes and improving the exchange performance of the bundle and this by a new tracing of the beam.
  • the subject of the invention is therefore a tubular bundle for a steam condenser in which the layout, in a plane perpendicular to the axis of the tubes, of the envelope of the tubed areas of the bundle, is a layout of the type forming radiant spikes, characterized in that at least some of the ears have at least one branch and in that said radiating ears radiate from a tubed surface forming a substantially circular ring.
  • the ears which branch off have at their base a trunk which is growing and branches out into two branches of equal thickness as soon as the thickness of the trunk of the ear reaches between one and a half times and twice its thickness at its base.
  • the thickness of said tubed surface forming a ring is substantially constant.
  • a cased surface of trapezoidal shape called an air cooler, surrounded by a cover, except on the underside of said air cooler, is located inside said cased ring, an annular non-cased surface. separating said trapezoidal surface from said cased ring, said cased ring comprising an interruption into which penetrates the upper end of said casing and leaving a clearance of communication between the uncased ring and an uncapped casing of steam passages separating two ears, said casing communicating with some extraction pipes passing through said groove.
  • FIG. 1 represents the layout of a tubular bundle of steam condenser according to the known prior art.
  • Figures 2, 3 and 4 show the layout of three tubular beams according to the invention in three cases of height to width ratio.
  • Figure 1 shows the layout of a tube bundle for a steam condenser. It is a known prior art bundle of the so-called radiating spike type.
  • This line constitutes, in a plane perpendicular to the axis of the tubes 50 which are all parallel, the envelopes of the tubed areas. This plane is parallel to the tubular end plates.
  • This bundle comprises a first tubed zone 1, called an air cooler, in the form of an isosceles trapezoid, surrounded by a cowling, shown diagrammatically by the simple line 51, except on the underside of the air cooler.
  • a second tubed zone forming a plurality of radiating ears 2.
  • the surface is uncased, in particular the grooves 3 of substantially triangular section for the passage of steam between two consecutive ears as well as the area 4 around the air cooler 1 between it and the base of ears 2.
  • the air cooler 1 ensures the concentration of the incondensables (air) with a view to their extraction by vacuum pumps.
  • the cowling 51 communicates with a few extraction pipes 52 passing through the upper groove 3.
  • Each half-ear 2 is "supplied" with steam by the groove 3 which they frame.
  • the ears 2 moreover comprise a narrow uncapped casing 5 (generally the width of a single row of tubes) dividing the ear into two half-ears.
  • FIG. 2 shows a plot of a tube bundle according to the invention in the case of a height to width ratio equal to one.
  • This bundle is also of the type with radiating spikes, but essentially comprises the characteristic peculiar to the invention that certain spikes, not all, but most, are divided into ramifications.
  • the ear 6 for example has a trunk 7 which widens from its base, then branches into two branches 8 and 9.
  • the branching into two branches is done when the trunk 7 reaches a width e 1 between one and a half and two times the thickness e at its base.
  • the thickness of the two branches 8 and 9 is equal, and remains approximately constant. It is the same for the ears 10, 11, 12, 13 and the symmetrical ears of the axis ⁇ .
  • the lower spikes 14, 15 and 16 are not divided, but they are very short.
  • the two upper ears 17 and 18 are not divided and are separated by an uncut rectangular recess 19.
  • the other uncapped tubings for the passage of vapor are triangular.
  • Another feature of the invention consists in that the radiating spikes radiate from a surface also cased forming a ring 22.
  • a dotted line 23 simply makes it possible to visualize this ring between this line and the line 24 which forms part of it. tracing of the envelope of the tubes.
  • This ring has a substantially constant thickness, a little stronger however at its lower part.
  • FIG. 1 there is a tubed zone of trapezoidal shape 27 constituting the air cooler (1 in FIG. 1).
  • This air cooler is surrounded by a cover, shown diagrammatically by a simple line 51, except on the inner face of the air cooler.
  • the cased ring 22 includes an interruption 25 into which the upper end of the casing 51 penetrates. A clearance between this casing 51 and the cased ring 22 allows the passage of vapor communication between the groove 19 and an uncased annular surface 26 located between the air cooler 27 and the cased ring 22.
  • the cowling 51 has a few extraction pipes 52 passing through the groove 19 and connected to vacuum pumps for extracting the non-condensables.
  • the layout according to the invention thus makes it possible to install, while retaining the same sizing criteria, a greater number of tubes in a given tubular plate section: between 5 and 10% of additional tubes compared to the layout of the art anterior, Figure 1.
  • the efficiency of the tubes is more homogeneous, in particular avoiding large jams at the base of the ears.
  • a reduction of the condensing pressure of the order of 2 to 3 mbar can be obtained on a 1000 MW condenser.
  • FIG. 3 shows another example of a beam in the case of a height to width ratio equal to 0.6.
  • the ears 11 and 12, as well as their symmetrical with respect to the axis ⁇ are respectively divided, first into two branches 28, 29 and 30, 31, then again into two branches 32, 33 for branch 28 and 34, 35 for branch 29.
  • the branch 31 of the spike 12 is again divided into two branches 36 and 37. Between all these branches, there are grooves of variable lengths: 38 to 45.
  • FIG. 4 shows another example in which the height to width ratio of the beam is here 1.7.
  • the ear 6 as well as its symmetrical branched into two branches 46 and 47, then the branch 46, again into two branches 48 and 49.
  • the tubes are better distributed in the tube plate since the peripheral part has a higher filling coefficient thus avoiding jams or concentrations of tubes, unfavorable to heat exchanges.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Particle Accelerators (AREA)
  • Tires In General (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Gas Burners (AREA)
EP96400339A 1995-02-23 1996-02-19 Rohrbündel für Dampfkondensator Expired - Lifetime EP0729000B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9502127A FR2731067B1 (fr) 1995-02-23 1995-02-23 Faisceau tubulaire pour condenseur de vapeur
FR9502127 1995-02-23

Publications (2)

Publication Number Publication Date
EP0729000A1 true EP0729000A1 (de) 1996-08-28
EP0729000B1 EP0729000B1 (de) 1999-03-24

Family

ID=9476449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96400339A Expired - Lifetime EP0729000B1 (de) 1995-02-23 1996-02-19 Rohrbündel für Dampfkondensator

Country Status (14)

Country Link
US (1) US5649590A (de)
EP (1) EP0729000B1 (de)
JP (1) JP3013344B2 (de)
KR (1) KR100387555B1 (de)
CN (1) CN1104623C (de)
CA (1) CA2170004C (de)
CZ (1) CZ288700B6 (de)
DE (1) DE69601821T2 (de)
DK (1) DK0729000T3 (de)
ES (1) ES2129936T3 (de)
FR (1) FR2731067B1 (de)
RU (1) RU2138750C1 (de)
SK (1) SK282942B6 (de)
UA (1) UA44251C2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101865612A (zh) * 2010-06-02 2010-10-20 清华大学 一种仿生双连树形管束式凝汽器
CN102261855A (zh) * 2011-06-09 2011-11-30 清华大学 一种伞形空冷区的双仿生树形管束式凝汽器

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6269867B1 (en) * 1994-12-02 2001-08-07 Hitachi, Ltd Condenser and power plant
DE10016080A1 (de) * 2000-03-31 2001-10-04 Alstom Power Nv Kondensator
EP2010852A1 (de) * 2006-03-27 2009-01-07 Bharat Heavy Electricals Lilmited Dampfkondensator mit zwei strömungsdurchgänge aufweisender rohrbündelkonfiguration
CN100498191C (zh) * 2006-12-29 2009-06-10 东方电气集团东方汽轮机有限公司 电站凝汽器模拟蒸汽流动流程装置
US20100314083A1 (en) * 2009-06-12 2010-12-16 George Williams Condenser Shell and Tube Bundle Support Plate Construction
CN102121797B (zh) * 2011-03-13 2015-07-29 东方电气集团东方汽轮机有限公司 汽轮机凝汽器排管
CN104266501B (zh) * 2014-10-17 2017-04-12 上海电力学院 一种具有双梯形空冷区的窄带顺流式凝汽器管束
JP6707443B2 (ja) * 2016-12-26 2020-06-10 住友化学株式会社 欠陥検査用画像撮像システム、欠陥検査システム、フィルム製造装置、欠陥検査用画像撮像方法、欠陥検査方法及びフィルム製造方法
CN107289792B (zh) * 2017-07-26 2023-05-05 杭州国能汽轮工程有限公司 一种低排汽阻力的凝汽器布管结构

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB261437A (en) * 1925-06-12 1926-11-12 Conrad Edward Howe Verity Improvements in steam condensers
US3139926A (en) * 1960-11-28 1964-07-07 American Radiator & Standard Surface condenser
FR1391661A (fr) * 1961-10-25 1965-03-12 Fives Penhoet Condenseur de vapeur

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57116194A (en) * 1981-01-12 1982-07-20 Shikoku Kakoki Co Ltd Centrifugal pump
JPS6048489A (ja) * 1983-08-26 1985-03-16 Hitachi Ltd 耐食被覆管式凝縮器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB261437A (en) * 1925-06-12 1926-11-12 Conrad Edward Howe Verity Improvements in steam condensers
US3139926A (en) * 1960-11-28 1964-07-07 American Radiator & Standard Surface condenser
FR1391661A (fr) * 1961-10-25 1965-03-12 Fives Penhoet Condenseur de vapeur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHRIST: "DAMPFGASSEN UND ENTLÜFTUNGSSTELLEN IN KONDENSATOREN", SCHWEIZERISCHE BAUZEITUNG, vol. 79, no. 46, 16 November 1961 (1961-11-16), ZURICH CH, XP002003843 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101865612A (zh) * 2010-06-02 2010-10-20 清华大学 一种仿生双连树形管束式凝汽器
CN101865612B (zh) * 2010-06-02 2011-11-09 清华大学 一种仿生双连树形管束式凝汽器
CN102261855A (zh) * 2011-06-09 2011-11-30 清华大学 一种伞形空冷区的双仿生树形管束式凝汽器

Also Published As

Publication number Publication date
SK282942B6 (sk) 2003-01-09
CA2170004C (fr) 1999-02-02
KR960031949A (ko) 1996-09-17
UA44251C2 (uk) 2002-02-15
SK23796A3 (en) 1997-02-05
ES2129936T3 (es) 1999-06-16
EP0729000B1 (de) 1999-03-24
CZ48796A3 (en) 1996-09-11
DE69601821D1 (de) 1999-04-29
CN1104623C (zh) 2003-04-02
JP3013344B2 (ja) 2000-02-28
FR2731067B1 (fr) 1997-04-04
CZ288700B6 (cs) 2001-08-15
DK0729000T3 (da) 1999-10-11
CA2170004A1 (fr) 1996-08-24
RU2138750C1 (ru) 1999-09-27
KR100387555B1 (ko) 2003-10-17
US5649590A (en) 1997-07-22
FR2731067A1 (fr) 1996-08-30
JPH08247691A (ja) 1996-09-27
CN1158749A (zh) 1997-09-10
DE69601821T2 (de) 1999-11-11

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