EP2241848A2 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

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Publication number
EP2241848A2
EP2241848A2 EP10154807A EP10154807A EP2241848A2 EP 2241848 A2 EP2241848 A2 EP 2241848A2 EP 10154807 A EP10154807 A EP 10154807A EP 10154807 A EP10154807 A EP 10154807A EP 2241848 A2 EP2241848 A2 EP 2241848A2
Authority
EP
European Patent Office
Prior art keywords
chamber
steam
condensate
partition
condensate outlet
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Withdrawn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
EP10154807A
Other languages
German (de)
English (en)
Other versions
EP2241848A3 (fr
Inventor
Yoshiyasu Fujiwara
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.)
TLV Co Ltd
Original Assignee
TLV Co Ltd
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 TLV Co Ltd filed Critical TLV Co Ltd
Publication of EP2241848A2 publication Critical patent/EP2241848A2/fr
Publication of EP2241848A3 publication Critical patent/EP2241848A3/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Withdrawn legal-status Critical Current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
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
    • 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
    • F28D7/06—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 having a single U-bend

Definitions

  • the present invention relates to a heat exchanger for exchanging heat between steam flowing as a heating fluid through plural heat transfer tubes installed in the shell of the heat exchanger and a fluid to be heated flowing outside the heat transfer tubes in the shell.
  • the heat exchanger has a shell which is provided with an inlet for fluid to be heated and an outlet for heated fluid and which includes plural heat transfer tubes installed therein.
  • the heat transfer tubes are, at their ends, penetratingly fixed to a tube plate.
  • the tube plate has an outer face covered by a partition chamber case having, in an upper part thereof, a steam inlet through which steam flows in and, in a lower part thereof, a condensate outlet through which condensate flows out.
  • a partition chamber is formed between the tube plate and the partition chamber case.
  • the partition chamber is partitioned by a partition plate into a steam inlet chamber having the steam inlet and a condensate outlet chamber having the condensate outlet.
  • the partition plate has a weep hole to allow steam condensate to flow down from the steam inlet chamber into the condensate outlet chamber.
  • the known heat exchanger described above has a problem that, when the amount of steam condensate in the steam inlet chamber is small, steam leaks into the condensate outlet chamber via the weep hole thereby causing steam locking to prevent the steam condensate generated in the heat transfer tubes from flowing down into the condensate outlet chamber.
  • the present invention provides a heat exchanger including a shell in which a plurality of heat transfer tubes are disposed.
  • the shell has an inlet for fluid to be heated through which fluid to be heated flows in and an outlet for heated fluid through which heated fluid flows out.
  • the heat transfer tubes are penetratingly fixed at their ends to a tube plate.
  • the tube plate has an end face covered by a partition chamber case provided, in an upper part thereof, with a steam inlet through which steam flows in and, in a lower part thereof, with a condensate outlet through which condensate flows out.
  • the tube plate and the partition chamber case form, between them, a partition chamber having a partition plate partitioning the partition chamber into a steam inlet chamber having the steam inlet and a condensate outlet chamber having the condensate outlet.
  • the partition plate has an opening through which the steam inlet chamber and the condensate outlet chamber are communicated with each other, and a steam trap for draining steam condensate from the steam inlet chamber into the condensate outlet chamber is connected to the opening of the partition plate.
  • a partition plate is provided with an opening through which a steam inlet chamber and a condensate outlet chamber are communication with each other, and a steam trap for draining steam condensate from the steam inlet chamber into the condensate outlet chamber is connected to the opening of the partition plate, so that, when steam condensate flows from the steam inlet chamber into the steam trap, the steam trap opens its valve to allow the steam condensate to be discharged into the condensate outlet chamber and so that, when steam flows from the steam inlet chamber into the steam trap, the steam trap closes its valve to prevent the steam from leaking out into the condensate outlet chamber.
  • steam locking is prevented, and the steam condensate generated in heat transfer tubes is allowed to quickly flow down into the condensate outlet chamber.
  • An approximately cylindrical shell 1 is provided: in a lower right part thereof as seen in FIG. 1 , with an inlet 2 for fluid to be heated through which fluid to be heated flows in; in an upper middle part thereof as seen in FIG. 1 , with an outlet 3 for heated/vaporized fluid through which heated/vaporized fluid flows out; and, in a lower left part thereof as seen in FIG. 1 , with a blow port 4 through which heated/nonvaporized fluid flows out.
  • Plural heat transfer tubes 5 are installed in the shell 1 to extend along the longitudinal direction of the shell 1.
  • the heat transfer tubes 5 are U-shaped, being curved in front of a weir 6.
  • the ends opposite to the curved portion of the heat transfer tubes 5 are penetratingly fixed to a circular tube plate 7.
  • the outer face of the tube plate 7 is covered by partition chamber cases 8 and 9.
  • the partition chamber case 8 is provided, in an upper middle part thereof as seen in FIG. 1 , with a steam inlet 10 through which steam flows in and, in a lower middle part thereof as seen in FIG. 1 , with a condensate outlet 11 through which condensate flows out.
  • the tube plate 7 and the partition chamber cases 8 and 9 thus form a partition chamber which is divided by a flat partition plate 14 into a steam inlet chamber 12 having the steam inlet 10 and a condensate outlet chamber 13 having the condensate outlet 11.
  • the partition plate 14 has an opening 15 through which the steam inlet chamber 12 and the condensate outlet chamber 13 are communicated with each other.
  • a steam trap 16 for draining steam condensate from the steam inlet chamber 12 into the condensate outlet chamber 13 is fixedly welded to the partition plate 14 such that the steam trap 16 is connected to the opening 15.
  • Reference numeral 17 in FIG. 1 represents plural baffle plates partitioning the interior of the shell 1, across the longitudinal direction of the shell 1, so as to regulate the flow of fluid to be heated.
  • the steam trap 16 connected to the opening 15 of the partition plate 14 is a free-float steam trap as shown in FIG. 2
  • the present invention allows it to be of any other type, for example, a lever float type, bucket type, bimetal type, expansion/contraction type, or disc type.
  • the free float steam trap 16 has a casing including a body 21 and a cover 22 bolted to the body 21.
  • a valve chamber 23 is formed in the casing.
  • the body 21 has, in an upper part thereof, an inlet 24 and, in a lower part thereof, an outlet passage 25 and an outlet 26.
  • the inlet 24 is communicated with an upper part of the valve chamber 23.
  • the inlet 24 is also communicated with the opening 15 of the partition plate 14.
  • a valve seat 29 having a valve orifice 27 is screwed to a portion, making up a lower side wall of the valve chamber 23, of the cover 22.
  • the valve orifice 27 faces diagonally downward.
  • the cover 22 has an outlet passage 30.
  • a lower part of the valve chamber 23 is communicated with the outlet 26 via the valve orifice 27 and the outlet passages 30 and 25.
  • a hollow spherical float 31 for opening and closing the valve orifice 27 is disposed in a free state.
  • a fork-shaped float seat 32 against which the float 31 abuts when positioned to close the valve orifice 27 is disposed below the float 31.
  • a bimetal 33 is disposed as a temperature-responsive member in the valve chamber 23.
  • the bimetal 33 has an approximately U-shaped section and is fixed, at an end thereof, to the cover 22 with a screw 34. When subjected to a high temperature, the bimetal 33 is deformed to squeeze its sectional U-shape, so that it does not interfere with the float 31.
  • the bimetal 33 When subjected to a low temperature, the bimetal 33 is deformed to widen its sectional U-shape, so that it pushes the float 31 rightward, as seen in FIG. 2 , to open the valve orifice 27.
  • a cap-shaped filter 35 for capturing foreign matter is fixed to the body 21 with a screw 36 such that the filter 35 is positioned upstream of the float 31 in the valve chamber 23.
  • the bimetal 33 In the steam trap 16, when the temperature in the valve chamber 23 is low, the bimetal 33 is deformed to widen its sectional U-shape, thereby pushing the float 31 away and opening the valve orifice 27. This causes the low-temperature air and condensate flowing into the valve chamber 23 to be discharged through the valve orifice 27 and the outlet 26 into the condensate outlet chamber 13. When the low-temperature air and condensate is discharged from the valve chamber 23 and the temperature of condensate flowing into the valve chamber 23 rises, the bimetal 33 is deformed to squeeze its sectional U-shape not to interfere with the float 31.
  • the heat exchanger according to the present invention can be applied to, for example, kettle-type reboilers, feed-water heaters, evaporators, and air-conditioners.

Landscapes

  • 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)
EP10154807A 2009-04-15 2010-02-26 Échangeur de chaleur Withdrawn EP2241848A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009099386A JP2010249414A (ja) 2009-04-15 2009-04-15 熱交換器

Publications (2)

Publication Number Publication Date
EP2241848A2 true EP2241848A2 (fr) 2010-10-20
EP2241848A3 EP2241848A3 (fr) 2011-05-25

Family

ID=42341403

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10154807A Withdrawn EP2241848A3 (fr) 2009-04-15 2010-02-26 Échangeur de chaleur

Country Status (3)

Country Link
US (1) US20100263845A1 (fr)
EP (1) EP2241848A3 (fr)
JP (1) JP2010249414A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2365269A1 (fr) * 2010-03-03 2011-09-14 Alstom Technology Ltd Appareil d'échangeur thermique et de séparation de liquides
EP2693147A4 (fr) * 2011-03-30 2015-03-18 Mitsubishi Heavy Ind Ltd Rebouilleur
CN104848727A (zh) * 2014-02-14 2015-08-19 阿尔斯通技术有限公司 换热器和用于除雾的方法
CN107131782A (zh) * 2017-05-27 2017-09-05 江苏盛世节能科技股份有限公司 一种干式氟利昂与原生海水换热设备
CN108061288A (zh) * 2017-12-25 2018-05-22 哈尔滨锅炉厂有限责任公司 一体式蒸汽发生器及蒸汽产生方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101313190B (zh) * 2005-11-17 2011-04-13 花村正明 蒸汽热交换器
EP2929275B1 (fr) * 2011-12-06 2017-09-13 Saudi Arabian Oil Company Collecteur pour échangeur de chaleur refroidi à l'air
CN104096368A (zh) * 2014-07-23 2014-10-15 安庆市东徽机械有限公司 再沸器
US9593893B2 (en) * 2014-09-11 2017-03-14 Caterpillar Inc. Method of remanufacturing a shell of a heat exchanger and a remanufactured shell
CN104806877B (zh) * 2015-04-24 2017-01-18 江苏誉特能源装备有限公司 船用lng强制蒸发器
CN113465403B (zh) * 2021-07-13 2021-12-10 杭州国能汽轮工程有限公司 一种具有高稳定性的汽轮机辅机水冷凝汽器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0534084A (ja) 1991-07-27 1993-02-09 Onoda Cement Co Ltd 熱交換器

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JPH07218180A (ja) * 1994-01-31 1995-08-18 Ishikawajima Harima Heavy Ind Co Ltd 横型熱交換器
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Publication number Priority date Publication date Assignee Title
JPH0534084A (ja) 1991-07-27 1993-02-09 Onoda Cement Co Ltd 熱交換器

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2365269A1 (fr) * 2010-03-03 2011-09-14 Alstom Technology Ltd Appareil d'échangeur thermique et de séparation de liquides
EP2693147A4 (fr) * 2011-03-30 2015-03-18 Mitsubishi Heavy Ind Ltd Rebouilleur
US10151540B2 (en) 2011-03-30 2018-12-11 Mitsubishi Heavy Industries Engineering, Ltd. Reboiler with void within the heat transfer tube group
CN104848727A (zh) * 2014-02-14 2015-08-19 阿尔斯通技术有限公司 换热器和用于除雾的方法
EP2908081A1 (fr) * 2014-02-14 2015-08-19 Alstom Technology Ltd Échangeur de chaleur et procédé de désembuage
CN107131782A (zh) * 2017-05-27 2017-09-05 江苏盛世节能科技股份有限公司 一种干式氟利昂与原生海水换热设备
CN108061288A (zh) * 2017-12-25 2018-05-22 哈尔滨锅炉厂有限责任公司 一体式蒸汽发生器及蒸汽产生方法

Also Published As

Publication number Publication date
US20100263845A1 (en) 2010-10-21
JP2010249414A (ja) 2010-11-04
EP2241848A3 (fr) 2011-05-25

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