EP3287729A1 - Flüssig-gas-mantelwärmetauscher - Google Patents

Flüssig-gas-mantelwärmetauscher Download PDF

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Publication number
EP3287729A1
EP3287729A1 EP16185637.2A EP16185637A EP3287729A1 EP 3287729 A1 EP3287729 A1 EP 3287729A1 EP 16185637 A EP16185637 A EP 16185637A EP 3287729 A1 EP3287729 A1 EP 3287729A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
deflector
shell
heating medium
shell heat
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
EP16185637.2A
Other languages
English (en)
French (fr)
Other versions
EP3287729B1 (de
Inventor
Michal Zoldak
Daniel Komorous
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.)
Doosan Skoda Power sro
Original Assignee
Doosan Skoda Power sro
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 Doosan Skoda Power sro filed Critical Doosan Skoda Power sro
Priority to EP16185637.2A priority Critical patent/EP3287729B1/de
Publication of EP3287729A1 publication Critical patent/EP3287729A1/de
Application granted granted Critical
Publication of EP3287729B1 publication Critical patent/EP3287729B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0265—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box
    • 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
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/02—Safety or protection arrangements; Arrangements for preventing malfunction in the form of screens or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/10—Safety or protection arrangements; Arrangements for preventing malfunction for preventing overheating, e.g. heat shields

Definitions

  • the invention relates to a liquid-to-gas shell heat exchanger which contains a shell the central part of which is closed by heads on both sides.
  • the present day known liquid-to-gas shell heat exchangers contain a cylindrical shell elongated in one direction and usually vertically oriented, which is closed by (usually) rounded heads.
  • an inlet aperture and outlet aperture for heated medium usually liquid, e.g. water
  • Fig. 2a a length-oriented
  • Fig. 1a a height-oriented
  • bunch of pipes situated in the inner space of the exchanger.
  • the inlet aperture (or apertures) and the outlet aperture for the heating medium usually gas, e.g.
  • the aim of the invention is to eliminate the disadvantages of the state- of-the-art technology and to design a liquid-to-gas shell heat exchanger which would eliminate the state-of-the-art technology disadvantages.
  • a liquid-to-gas shell heat exchanger which contains an elongated shell, the central part of which is closed by heads on both sides, whereby in the shell, inlet and outlet apertures for the heated medium are made, being interconnected by a conduit of the heated medium arranged in the inner space of the heat exchanger, and the inlet and outlet apertures for the heating medium, the principle of which consists in the fact that the inlet aperture for the heating medium is created in the head of the shell of the heat exchanger.
  • the diameter of the inlet aperture for the heating medium can be up to identical with the diameter of the shell of the heat exchanger, making it possible to supply any amount of the heating medium necessary without the need to increase its speed and/or to branch its conduit.
  • the heating medium enters the inner space of the exchanger designed in this way in the direction of the orientation of the free spaces between the shell and the conduit of the heated medium, and therefore it fills these spaces faster and more evenly.
  • a deflector is preferably arranged in the inner space of the heat exchanger opposite the inlet aperture for the heating medium.
  • this deflector is axially symmetrical - it has, for example, a shape of a cone or of a jacket of a cone, because in this case it ensures an even supply of the heating medium into the inner space of the heat exchanger.
  • its outer surface can be cranked and/or rounded for the required directing of the heating liquid.
  • this deflector has preferably a spherically rounded apex.
  • the deflector is preferably arranged coaxially with the inlet aperture for the heating medium.
  • the deflector is formed by a hollow body, e.g., in a shape of a jacket of a cone, it is advantageous if at least one through-hole is made in it, or if the deflector consists of at least two segments separated by a gap. This ensures that the supplied heating medium quickly gets into its inner space and, due to this, the whole inner space of the heat exchanger is heated faster and more evenly.
  • At least one directing element is provided on the outer surface of the deflector, for example, a lamella, etc., for directing the movement of supplied heating medium.
  • the deflector can be, if necessary, supported by at least one auxiliary deflector. It can be, for example a deflector in the shape of a cone or of a jacket of a cone, which is situated between the deflector and the inlet aperture for the heating medium, or an auxiliary deflector in the shape of a jacket of truncated cone without bases, which may overlap at least a part of the outer surface of the deflector.
  • the inlet aperture for the heating medium is from the outer side of the shell equipped with a socket with a flange.
  • this socket widens in the direction into the inner space of the heat exchanger and, thanks to this, reduces the speed of the heating medium entering the inner space of the exchanger.
  • FIG. 1 schematically represents a sectional view of one embodiment of a vertically oriented liquid-to-gas shell heat exchanger known from the state of the art
  • Fig. 1b represents a sectional view of one embodiment of a vertically oriented liquid-to-gas shell heat exchanger according to the invention
  • Fig. 2a represents a sectional view of one embodiment of a horizontally oriented liquid-to-gas shell heat exchanger known from the state of the art
  • Fig. 2b represents a sectional view of one embodiment of a horizontally oriented liquid-to-gas shell heat exchanger according to the invention
  • Figs. 1 schematically represents a sectional view of one embodiment of a vertically oriented liquid-to-gas shell heat exchanger known from the state of the art
  • Fig. 1b represents a sectional view of one embodiment of a vertically oriented liquid-to-gas shell heat exchanger according to the invention
  • Fig. 2a represents a sectional view of one embodiment of a horizontally oriented liquid-to-gas shell
  • FIG. 3a to 3d show sectional views of four other embodiments of a vertically oriented liquid-to-gas shell heat exchanger according to the invention.
  • Fig.4 represents a visualization of a part of the inner space of the liquid-to-gas shell heat exchanger according to the invention in the first example of embodiment
  • Fig. 5 represents a visualization of a part of the inner space of the liquid-to-gas shell heat exchanger according to the invention in the second example of embodiment.
  • the principle of the shell heat exchanger according to the invention will be further on explained taking into account the construction of the present-day liquid-to-gas shell heat exchangers represented in Fig. 1 a and Fig. 2a , and six embodiments of a high-pressure heater, which is used, for example, in power plants to heat feed water with steam taken from the steam turbine represented in Figs. 1b, 2b , 3a to 3d ., 4 and 5 .
  • the principle presented can be used even for any other liquid-to-gas shell heat exchanger regardless of its purpose and orientation.
  • the known shell heat exchanger 1 ( Fig.1a and Fig. 2a ) contains an elongated shell 2, the central cylindrical part 21 of which is closed by a rounded head 22 on each side.
  • an inlet aperture 31 and an outlet aperture 32 for the heated medium (usually liquid), which are mutually interconnected by a conduit 33 of the heated medium composed of a known bunch of pipes 34 situated in the inner space of the heat exchanger 1 , the conduit being height-oriented ( Fig. 1a ) or length-oriented ( Fig. 2a ).
  • an outlet aperture 42 and at least one inlet aperture 41 for the heating medium are made in the central cylindrical part 21 of the shell 2 Besides this, in the central cylindrical part 21 of the shell 2 an outlet aperture 42 and at least one inlet aperture 41 for the heating medium are made.
  • the inlet aperture 41 for the heating medium (usually gas) in the shell heat exchanger 1 according to the invention is in contrast to similar known heat exchangers 1 situated in one of the rounded heads 22 of its shell 2 . If the shell heat exchanger 1 is vertically oriented, the inlet aperture 41 for the heating medium is preferably situated in its upper rounded head 22 ( Fig. 1b ). If the shell heat exchanger 1 is oriented horizontally and the inlet aperture 31 and the outlet aperture 32 for the heated medium are situated in the central cylindrical part 21 of its shell 2 , the entry aperture 41 for the heating medium can be situated in any of the rounded heads 22 ( Fig.
  • the inlet aperture 31 and/or the outlet aperture 32 for the heated medium is situated in one of its rounded heads 22, the inlet aperture 41 for the heating medium is preferably situated in the opposite head 22.
  • the diameter of the thus arranged inlet aperture 41 for the heating medium can be substantially identical to the diameter of the heat exchanger 1 shell 2 , which allows supply of substantially any required amount of the heating medium without the necessity to increase its speed and/or branch its conduit.
  • Another advantage of this design consists in the fact that the heating medium enters the inner space of the heat exchanger 1 in the direction of the orientation of free spaces between the shell 2 and pipes 34 of the conduit 33 of the heated medium, therefore the heating medium fills these spaces faster and more evenly.
  • the outlet aperture 42 for the heating medium is situated in any part of the shell 2 of the heat exchanger 1 , preferably in its central cylindrical part 21. However, in embodiments not represented it can be arranged even in the opposite rounded head 22.
  • the inlet aperture 41 for the heating medium is preferably on the outer side of the shell 2 of the heat exchanger 1 equipped with a socket 410 with a flange 411 and if it is necessary to reduce the speed of the heating medium at the moment of its entry into the inner space of the heat exchanger 1, the socket 410 can widen in the direction into the inner space of the heat exchanger 1.
  • the socket 410 thus shaped helps to direct the supplied heating medium into the free spaces in the inner space of the heat exchanger 1 .
  • a deflector 5 is placed, which directs the supplied heating medium into the free spaces between the shell 2 and pipes 34 of the conduit 33 of the heated medium and, at the same time, it protects the conduit 33 of the heated medium from the direct impact of the heating medium and the erosion related.
  • This deflector 5 can generally be of any shape, however, the deflector 5 having an axially symmetrical shape - for example, a shape of a jacket of a cone, oriented in the way that it widens in the direction from the inlet aperture 41 for the heating medium, appears as the most suitable.
  • a heat exchanger 1 with the deflector 5 of this kind are schematically represented in Figs. 3a to 5 .
  • the deflector 5 shaped in this way has a spherically rounded apex 51 , which contributes to its more advantageous circumfluence by heating medium.
  • the deflector 5 is situated coaxially with the inlet aperture 41 for the heating medium.
  • the deflector 5 can be supplemented by another element or elements of any shape for directing the supplied heating medium and/or for the protection of the inner surface of the shell 2 of the heat exchanger 1 from erosion caused by the heating medium.
  • an element is, for example, an auxiliary deflector 6 , which, in the embodiment represented in Fig. 3b , is in the shape of a jacket of a truncated cone without bases and is situated outside the deflector 5 , preferably coaxially with it.
  • the auxiliary deflector 6 can be arranged in such a manner that it overlaps at least a part of the outer surface of the deflector 5 ( Fig. 3b ).
  • the outer surface of the deflector 5 and the inner surface of the auxiliary deflector 6 constitute together a directing channel 56 or, on the contrary, without any overlap of the deflector 5 .
  • the auxiliary deflector 6 thus shaped usually has a bigger conicalness (i.e. the angle between the surface line and the base) than the deflector 5 , but, if necessary, for example, due to the inner arrangement of the heat exchanger 1 , its conicalness can be equivalent or smaller.
  • the auxiliary deflector 6 has a shape of a jacket of a cone and is (in the direction of the supplied heating medium) placed before the deflector 5 , whereas it is preferably situated coaxially with it.
  • the diameter of the auxiliary deflector 6 in its widest part is smaller than the diameter of the deflector 5 in its widest part.
  • the auxiliary deflector 6 has the same conicalness as the deflector 5 , but in other not represented embodiments, it can have a different conicalness - bigger or smaller.
  • the auxiliary deflector 6 has preferably a spherically rounded apex 61 or it can have the shape of a jacket of a truncated cone with the upper base. If necessary, the deflector 5 and the auxiliary deflector 6 can be arranged in such a manner that the deflector 5 partially enters the cavity of the auxiliary deflector 6 .
  • the auxiliary deflector 6 can be formed by another element, e.g. by a plane, rounded and/or cranked board.
  • the deflector 5 can be supported by two auxiliary deflectors 6 , when, e.g., one of them has a shape of a jacket of a cone and is arranged before it (as in the embodiment represented in Fig. 3c ) and the other has a shape of a jacket of a truncated cone without bases and is arranged outside the deflector 5 (e.g. as in the embodiment represented in Fig. 3b ), and if necessary, it can overlap at least a part of the outer surface of the deflector 5 .
  • the deflector 5 can be designed in any other way, whereby it can have, for example, a shape of (a jacket of) a cone, (a jacket of) a truncated cone with the upper base, (a jacket of) a spire, (a jacket of) a frustum with the upper base, etc. or its surface may be rounded inwards or outwards and/or cranked.
  • Fig. 3d represents an example of embodiment of the heat exchanger 1 in which the deflector 5 has a shape of a jacket of a cone, whereas its conicalness sharply changes along its height, while its lower part 53 is of greater conicalness than its upper part 52.
  • This embodiment of the deflector 5 is very advantageous because the supplied heating medium copies its shape in its movement, and so it is directed towards the free spaces of the inner space of the shell 2 , and the part of it which falls onto the inner surface of the shell 2 of the heat exchanger impacts it at a low speed and under a small angle, thereby reducing its erosive effect.
  • the conicalness of the conical deflector 5 may be modified in a different way, whereby the deflector 5 can be formed by a cone, the diameter of which is continuously rising (and in some part possibly even sharply or continuously declining).
  • the deflector 5 oriented opposite the supplied heating medium, it is possible to arrange at least one directing element, such as lamellas 7 , etc., ( Figs. 4 and 5 ) which direct the movement of the heating medium into the free space of the heat exchanger 1 or influence its movement in another desired manner.
  • the lamellas 7 can be used for mounting the deflector 5 in the inner space of the shell heat exchanger 1 .
  • the advantageous cylindricity of the deflector 5 or its upper part 52 is in all embodiments 25 to 50°, most preferably 40 to 50°.
  • the advantageous conicalness of the lower part 53 of the deflector 5 is 55 to 75°, the most advantageously 65 to 75°.
  • the transition between the upper part 52 of the deflector 5 and the lower part 53 of the deflector 5 is formed by rounding.
EP16185637.2A 2016-08-25 2016-08-25 Flüssig-gas-mantelwärmetauscher Active EP3287729B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16185637.2A EP3287729B1 (de) 2016-08-25 2016-08-25 Flüssig-gas-mantelwärmetauscher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16185637.2A EP3287729B1 (de) 2016-08-25 2016-08-25 Flüssig-gas-mantelwärmetauscher

Publications (2)

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EP3287729A1 true EP3287729A1 (de) 2018-02-28
EP3287729B1 EP3287729B1 (de) 2020-10-07

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2138469A (en) * 1935-08-21 1938-11-29 Alco Products Inc Heat exchanger
US3180405A (en) * 1959-03-11 1965-04-27 Itt Condensers
JP2001330392A (ja) * 2000-05-24 2001-11-30 Purantetsukusu:Kk プラスチック熱交換器
US20020011329A1 (en) * 2000-05-30 2002-01-31 Peterson Custom Stainless, Inc. Heat exchanger
DE102012000146A1 (de) * 2012-01-05 2013-07-11 Linde Aktiengesellschaft Flüssigkeitsverteiler für einen Wärmeübertrager

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202974016U (zh) * 2012-12-19 2013-06-05 攀钢集团攀枝花钢钒有限公司 管板式换热器封头

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2138469A (en) * 1935-08-21 1938-11-29 Alco Products Inc Heat exchanger
US3180405A (en) * 1959-03-11 1965-04-27 Itt Condensers
JP2001330392A (ja) * 2000-05-24 2001-11-30 Purantetsukusu:Kk プラスチック熱交換器
US20020011329A1 (en) * 2000-05-30 2002-01-31 Peterson Custom Stainless, Inc. Heat exchanger
DE102012000146A1 (de) * 2012-01-05 2013-07-11 Linde Aktiengesellschaft Flüssigkeitsverteiler für einen Wärmeübertrager

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Publication number Publication date
EP3287729B1 (de) 2020-10-07

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