EP2400247A2 - Wärmetauscher und Düse des Wärmetauschers - Google Patents

Wärmetauscher und Düse des Wärmetauschers Download PDF

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Publication number
EP2400247A2
EP2400247A2 EP11170678A EP11170678A EP2400247A2 EP 2400247 A2 EP2400247 A2 EP 2400247A2 EP 11170678 A EP11170678 A EP 11170678A EP 11170678 A EP11170678 A EP 11170678A EP 2400247 A2 EP2400247 A2 EP 2400247A2
Authority
EP
European Patent Office
Prior art keywords
fluid
passage
heat exchanger
shell
pipe
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Withdrawn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
EP11170678A
Other languages
English (en)
French (fr)
Other versions
EP2400247A3 (de
Inventor
Takeshi Fujisawa
Kenji Sato
Nobuo Yamaga
Takeo Suga
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Publication of EP2400247A2 publication Critical patent/EP2400247A2/de
Publication of EP2400247A3 publication Critical patent/EP2400247A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines

Definitions

  • a nozzle structure for a heat exchanger or the like that a thermal sleeve, which is formed of a cylindrical body having a diameter smaller than that of the nozzle and has its one end attached to the inner peripheral wall on the upstream side of the nozzle, is disposed within the nozzle which is provided to introduce a high-temperature fluid into the main body of the heat exchanger or the like.
  • FIG. 1 is a sectional view showing a cross section of the structure of the heat exchanger according to one embodiment.
  • FIG. 2 is a view showing a main portion cross section of FIG 1 .
  • FIG. 3 is a view showing a main portion cross section of the heat exchanger according to a second embodiment.
  • FIG. 4 is a view showing a cross section taken along A-A of FIG. 3 .
  • FIG. 5 is a view showing a main portion cross section of the heat exchanger according to a third embodiment.
  • FIG. 6 is a view showing a main portion cross section of the heat exchanger according to a fourth embodiment.
  • a heat exchanger is provided with an inside shell, an outside shell, a cooling portion, and an inlet nozzle.
  • the inside shell has an inside space for flowing a fluid, and an opening portion for outflowing the fluid from the inside space.
  • the outside shell covers the inside shell to form a first passage between them to flow the fluid outflowing from the opening portion.
  • the cooling portion is disposed within the inside shell to cool the fluid within the inside space.
  • the inlet nozzle has an inner pipe, an outer pipe, and an outlet pipe. The inner pipe flows the fluid into the inside space through the outside shell.
  • the outer pipe covers the inner pipe to form a second passage between them and has its one end connected to the outside shell to communicate the second passage with the first passage, and its other end connected to the inner pipe on the outside of the outside shell to seal the second passage to flow the fluid partly from the first passage to the second passage.
  • the outlet pipe is connected to the outer pipe to inflow the fluid from the second passage.
  • a nozzle of a heat exchanger has an inner pipe, an outer pipe, and an outlet pipe.
  • the inner pipe flows a fluid from outside into an inside space of the heat exchanger.
  • the outer pipe covers the inner pipe to form a passage between them, and has its one end connected to the heat exchanger to communicate the passage with the inside space and its other end connected to the inner pipe on the outside of the heat exchanger to seal the passage to flow the fluid partly from the inside space to the passage.
  • the outlet pipe is connected to the outer pipe to inflow the fluid from the passage.
  • FIG. 1 is a sectional view showing a cross section of the structure of heat exchanger 10 according to a first embodiment.
  • FIG. 2 is a view showing a main portion cross section of FIG. 1 .
  • the heat exchanger 10 is provided with an outside shell 11 which is formed into a hollow cylindrical shape in which a fluid S such as steam is flown, and an inside shell 12 which is formed into a hollow cylindrical shape and disposed within the outside shell 11.
  • One end of the inside shell 12 is supported by and fixed to a disk-shape tube plate 25 which is disposed at one longitudinal end of the outside shell 11 (right end side of the outside shell 11 in the drawing).
  • An outlet nozzle I which allows the fluid S to flow outside is connected to the other longitudinal end of the outside shell I (left end side of the outside shell 11 in the drawing).
  • An opening portion 12a where the fluid S outflows from the inside shell 12 is disposed on the circumferential surface and on the right end side (tube plate 25 side) of the inside shell 12.
  • Plural heat transfer pipes (hereinafter called as "heat transfer pipe group") 13 are provided within the inside shell 12.
  • the heat transfer pipe group 13 is pierced through and supported by the tube plate 25.
  • Low-temperature water L flowing from, for example, an unshown water supplier to a boiler is supplied to the heat transfer pipe group 13 to cool down the fluid S within the inside shell 12.
  • the low-temperature water L flows into a water inlet port 14 and out from a water outlet port 15.
  • a dividing plate 16 divides the water inlet port 19 and the water outlet port 15.
  • the outside shell 11 covers the inside shell 12 to form a first passage 17, where the fluid S inflowing through the opening portion 12a flows, between the outside shell 11 and the inside shell 12.
  • the fluid S from the opening portion 12a which is formed on the right side of the outside shell 11, flows through the first passage 17 in the left direction in the drawing and outflows from the outlet nozzle 18 which is connected to the left end side of the outside shell 11.
  • an inlet nozzle 19 where a high-temperature fluid (steam) coming from the steam turbine enters is fitted to the circumferential surface and on the left end side of the outside shell 11.
  • the inlet nozzle 19 is comprised of an inner pipe 20, an outer pipe 21 and an outlet pipe 22.
  • One end of the inner pipe 20 is pierced through the outside shell 11 an attached from the outside to the circumferential surface on the left end side of the inside shell 12, and the fluid S flows from the inner pipe 20 into the inside shell 12.
  • the fluid S from the inner pipe 20 flows within the inside shell 12 in the right direction in the drawing and flows from the opening portion 12a to the first passage 17.
  • the outer pipe 21 has an inner diameter larger than the outer diameter of the inner pipe 20 and covers the inner pipe 20 to form a second passage 23 between the outer pipe 21 and the inner pipe 2d.
  • One end of the outer pipe 21 is connected to the outside shell 11 to communicate the second passage 23 with the first passage 17.
  • the other end of the outer pipe 21 is connected to the inner pipe 20 on the outside of the outside shell 11 to seal one end of the second passage 23.
  • the outer pipe 21 forms the second passage 23 between the outer pipe 21 and the inner pipe 20 to inflow partly the fluid S from the first passage 17.
  • the outlet pipe 22 has a bypass function to outflow the fluid S partly from the outer pipe 21 to the outlet nozzle 18.
  • the fluid S of a high temperature is flown from the inner pipe 20 of the inlet nozzle 19 into the left end of the inside shell 12, moved to the right direction within the inside shell 12 in the drawing, and cooled by the low-temperature water L which flows to make a circuit within the heat transfer pipe group 13.
  • the cooled fluid S outflows from the opening portion 12a of the inside shell 12 to the first passage 17.
  • the opening portion 12a is provided at the right end of the inside shell 12, and the inlet nozzle 19 is provided at the left end of the inside shell 12 away from the opening portion 12a.
  • the fluid S in the first passage 17 flows along the inner circumferential surface of the outside shell 11 and the outer circumferential surface of the inside shell 12 in the left direction in the drawing and can cool down the outside shell 11 and the inside shell 12.
  • the fluid S in the first passage 17 is flown out of the heat exchanger 10 through the outlet nozzle 18 at the left end of the outside shell 11.
  • the fluid S from the first passage 17 is partly divided to flow into the second passage 23 of the inlet nozzle 19.
  • the fluid S in the second passage 23 flows upward along the outer circumferential surface of the inner pipe 20 and the inner circumferential surface of the outer pipe 21 in the drawing to cool down the inner pipe 20 and the outer pipe 21.
  • the fluid S in the second passage 23 outflows into the outlet pipe 22.
  • the fluid S in the outlet pipe 22 flows in the left direction in the drawing, joins at the outlet nozzle 18 with the fluid S coming from the first passage 17 and flows out of the heat exchanger 10.
  • the heat exchanger of this embodiment is formed with the first passage 17, where the cooled fluid flows, between the outside shell 11 and the inside shell 12 of the double structure and provided with the inlet nozzle 19 which forms the second passage 23 in which the cooled fluid inflows partly. Therefore, the outside shell 11, the inside shell 12 and the inlet nozzle 19 where the high-temperature fluid flows can be cooled down. As a result, the reduction of thermal stress and creep in the heat exchanger and the nozzle 19 can be improved, and the heat exchanger with high reliability can be provided.
  • the heat exchanger for cooling the gas such as steam was described, but it is not limited to the above use but can also be applied to a heat exchanger for cooling a liquid such as oil, for example.
  • FIG. 3 is a view showing a main portion cross section of the heat exchanger according to a second embodiment.
  • FIG. 4 is a view showing a cross section taken along A-A of FIG. 3 .
  • the heat exchanger 10 of this embodiment is provided with plural support portions 30 for supporting the inside shell 12 by the inner circumferential surface of the outside shell 11.
  • the inside shell 12 has an end face 12b, which is opposed to and away from the tube plate 25, at one longitudinal end of the inside shell 12 (right end of the inside shell 12 in the drawing) to form a space between the tube plate 25 and the end face 12b. This space functions as a part of the first passage.
  • the end face 12b serves together with the tube plate 25 to support the pierced heat transfer pipe group 13.
  • the opening portion 12a through which the fluid. S outflows from the inside is disposed on the circumferential surface at the right end of the inside shell 12 and at the end face 12b.
  • the fluid S in the first passage 17 flows in the left direction in the drawing along the inner circumferential surface of the outside shell 11 and the outer circumferential surface of the inside shell 12 to cool down the outside shell 11and the inside shell 12.
  • the fluid S in the first passage 17 flows downward in the drawing along the end face 12b and the tube plate 25 to cool down the tube plate 25.
  • the heat exchanger of this embodiment provides the same effects as in the first embodiment.
  • the inside shell 12 is supported independent of and within the outside shell 11, so that a first route where the cooled fluid flows can also be formed in the space between the end face 12b and the tube plate 25.
  • the reduction of thermal stress and creep in the tube plate 25 can also be improved, so that a heat exchanger with higher reliability can be provided.
  • FIG. 5 is a view showing a main portion cross section of the heat exchanger according to a third embodiment.
  • the heat exchanger 10 ofthis embodiment has substantially the same structure as that of the heat exchanger of FIG. 4 . But it has the following differences. That is, the tube plate 25 shields one longitudinal end within the outside shell 11 and is disposed below the inside shell 12. As a result, the longitudinal directions of the outside shell 11 and the inside shell 12 become vertical directions in the drawing, and the heat exchanger 10 is vertically disposed.
  • the inlet nozzle 19 is disposed on the circumferential surface at an upper end side of the outside shell 11.
  • the inner pipe 20 is mounted on the circumferential surface at an upper end side of the inside shell 12 through the outside shell 11 from the outside to flow the fluid S into the inside shell 12.
  • a condensed drain (liquid resulting from condensation of steam) W generated while operating can be held on the side of the tube plate 25, so that a recovery nozzle 31 for outflowing the condensed drain W is mounted on the circumferential surface of the tube plate 25.
  • the high-temperature fluid S inflows from the inner pipe 20 of the inlet nozzle 19 into an upper end of the inside shell 12 and moves downward in the inside shell 12 in the drawing and is cooled by the low-temperature water L which flows to make a circuit within the heat transfer pipe group 13.
  • the cooled fluid S outflows from the opening portion 12a of the inside shell 12 to the first passage 17.
  • the fluid S in the first passage 17 flows along the inner circumferential surface of the outside shell 11and the outer circumferential surface of the inside shell 12 upward in the drawing and can cool down the outside shell 11 and the inside shell 12.
  • the fluid S in the first passage 17 flows out of the heat exchanger 10 through the outlet nozzle 18 at the upper end of the outside shell 11.
  • the fluid S in the first passage 17 is divided partly to flow into the second passage 23 of the inlet nozzle 19.
  • the fluid S in the second passage 23 flows in the right direction in the drawing along the outer circumferential surface of the inner pipe 20 and the inner circumferential surface of the outer pipe 21 to cool down the inner pipe 20 and the outer pipe 21.
  • the fluid S in the second passage 23 outflows to the outlet pipe 22.
  • the fluid S in the outlet pipe 22 flows upward in the drawing, joins in the outlet nozzle 18 with the fluid S coming from the first passage 17, and flows out of the heat exchanger 10.
  • the fluid S condenses in the heat exchanger 10 to generate the condensed drain W.
  • the condensed drain W flows onto the tube plate 25, flows out of the heat exchanger 10 through the recovery nozzle 31, and can be recovered.
  • the same effects as in the second embodiment can be obtained by the heat exchanger of this embodiment.
  • the recovery nozzle 31 can be connected to the tube plate 25. As a result, recovery of the condensed drain W is also facilitated, and a heat exchanger with higher reliability can be provided.
  • FIG. 6 is a view showing a main portion cross section of the heat exchanger according to a fourth embodiment. As shown in FIG. 6 , this embodiment is an example that the inlet nozzle 19 is mounted on the heat exchanger 10 having a structure with the outside shell 11 only.
  • This inlet nozzle 19 is mounted on the circumferential surface at the right end side of the outside shell 11.
  • the inlet nozzle 19 is comprised of the inner pipe 20, the outer pipe 21 and the outlet pipe 22 in the same manner as in the first embodiment.
  • One end of the inner pipe 20 is pierced through the outside shell 11 to contact the right end side of the outside shell 11 from outside, namely to the heat transfer pipe group 13 on a base end side, to flow the fluid S into the outside shell 11.
  • the low-temperature water L flows into and out of the heat transfer pipe group 13.
  • the outer pipe 21 covers the inner pipe 20 to form the second passage 23 between them.
  • One end of the outer pipe 21 is connected to the outside shell 11 to communicate the second passage 23 with the inside space of the outside shell 11.
  • the other end of the outer pipe 21 is connected to the inner pipe 20 outside the outside shell 11 to seal one end of the second passage 23.
  • the outer pipe 21 forms the second passage 23, which is joinable to the inside space of the outside shell 11, between the outer pipe 21 and the inner pipe 20, and the fluid S inflows partly from the inside space of the outside shell 11.
  • the outlet pipe 22 has its one end connected to the outer pipe 21 and the other end connected to the outlet nozzle 18 in the same manner as in the first embodiment, and the fluid S flowing from the outside shell I 1 into the second passage 23 is partly bypassed to the outlet nozzle 18.
  • the high-temperature fluid S flows from the inner pipe 20 of the inlet nozzle 19 into the right end of the outside shell 11, moves in the left direction within the outside shell 11 in the drawing, and is cooled by the low-temperature water L which flows to make a circuit within the heat transfer pipe group 13.
  • the cooled fluid S can cool down the outside shell 11 by flowing in the left direction within the outside shell 1 in the drawing.
  • the fluid S outflows from the outlet nozzle 18 mounted at the left end of the outside shell 11.
  • the cooled fluid S is divided to flow partly into the second passage 23 of the inlet nozzle 19.
  • the fluid S in the second passage 23 flows upward in the drawing along the outer circumferential surface of the inner pipe 20 and the inner circumferential surface of the outer pipe 21 to cool down the inner pipe 20 and the outer pipe 21.
  • the fluid S in the second passage 23 outflows to the outlet pipe 22.
  • the fluid S in the outlet pipe 22 flows in the left direction in the drawing, joins at the outlet nozzle 18 with the fluid S coming from the outside shell 11 and flows out of the heat exchanger 10.
  • the cooled fluid flows inside the outside shell 11, and the inlet nozzle 19 which forms the passage in which the cooled fluid flows is provided, and the outside shell 11 and the inlet nozzle 19 where the high-temperature fluid flows can be cooled.
  • reduction of thermal stress and creep in the heat exchanger and the nozzle 19 can be improved, so that the heat exchanger with high reliability can be provided.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP11170678.4A 2010-06-22 2011-06-21 Wärmetauscher und Düse des Wärmetauschers Withdrawn EP2400247A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010141734A JP2012007761A (ja) 2010-06-22 2010-06-22 熱交換器および熱交換器の管台

Publications (2)

Publication Number Publication Date
EP2400247A2 true EP2400247A2 (de) 2011-12-28
EP2400247A3 EP2400247A3 (de) 2014-01-01

Family

ID=44674977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11170678.4A Withdrawn EP2400247A3 (de) 2010-06-22 2011-06-21 Wärmetauscher und Düse des Wärmetauschers

Country Status (4)

Country Link
US (1) US20120145367A1 (de)
EP (1) EP2400247A3 (de)
JP (1) JP2012007761A (de)
CN (1) CN102313482B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2975353A1 (de) * 2014-07-16 2016-01-20 Casale SA Rohrbündelwärmetauscher
RU2679580C1 (ru) * 2018-05-14 2019-02-11 Владислав Юрьевич Климов Теплообменник

Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
CN103673723B (zh) * 2013-12-21 2015-09-09 哈尔滨锅炉厂有限责任公司 壳程整体包壳结构的换热器
RU2567466C1 (ru) * 2014-12-15 2015-11-10 Владислав Юрьевич Климов Теплообменник
DE102015212433A1 (de) * 2015-07-02 2017-01-05 Arvos Gmbh Wärmeübertrager
CN106643222B (zh) * 2016-11-25 2019-08-02 上海锅炉厂有限公司 一种壳程自冷却保护浮头式换热器及换热方法
CN106839823A (zh) * 2017-03-24 2017-06-13 南京聚拓化工科技有限公司 一种高压锅炉水折流杆式预热器和化学反应装置
KR102343408B1 (ko) * 2017-11-17 2021-12-27 주식회사 엘지화학 열 교환기
JP2020056552A (ja) * 2018-10-03 2020-04-09 株式会社東芝 熱交換器
EP3640575B1 (de) * 2018-10-15 2022-12-07 Wieland Provides S.r.l. Vertikaler wärmetauscher

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Publication number Priority date Publication date Assignee Title
EP2975353A1 (de) * 2014-07-16 2016-01-20 Casale SA Rohrbündelwärmetauscher
WO2016008675A1 (en) * 2014-07-16 2016-01-21 Casale Sa Shell and tube heat exchanger
US10386120B2 (en) 2014-07-16 2019-08-20 Casale Sa Shell and tube heat exchanger
RU2679580C1 (ru) * 2018-05-14 2019-02-11 Владислав Юрьевич Климов Теплообменник

Also Published As

Publication number Publication date
CN102313482B (zh) 2013-06-26
US20120145367A1 (en) 2012-06-14
EP2400247A3 (de) 2014-01-01
JP2012007761A (ja) 2012-01-12
CN102313482A (zh) 2012-01-11

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