WO2017220209A1 - Échangeur de chaleur spiralé muni d'une couche de tubes factice entre le tube central et la couche de tubes la plus à l'intérieur - Google Patents

Échangeur de chaleur spiralé muni d'une couche de tubes factice entre le tube central et la couche de tubes la plus à l'intérieur Download PDF

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Publication number
WO2017220209A1
WO2017220209A1 PCT/EP2017/025173 EP2017025173W WO2017220209A1 WO 2017220209 A1 WO2017220209 A1 WO 2017220209A1 EP 2017025173 W EP2017025173 W EP 2017025173W WO 2017220209 A1 WO2017220209 A1 WO 2017220209A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
heat exchanger
fluid
core tube
layer
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.)
Ceased
Application number
PCT/EP2017/025173
Other languages
German (de)
English (en)
Inventor
Manfred Steinbauer
Christiane Kerber
Jürgen Spreemann
Florian Deichsel
Konrad Braun
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Publication of WO2017220209A1 publication Critical patent/WO2017220209A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F28D7/02—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 helically coiled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2270/00—Thermal insulation; Thermal decoupling
    • F28F2270/02—Thermal insulation; Thermal decoupling by using blind conduits

Definitions

  • the invention relates to a heat exchanger according to claim 1.
  • Such a heat exchanger has a pressure-bearing jacket, which extends along a preferably vertically oriented longitudinal axis and defines a jacket space for receiving a first fluid.
  • a tube bundle with a plurality of tubes for receiving at least a second
  • a plurality of tube layers are formed, which are arranged one above the other in the radial direction of the core tube or the tube bundle, so that the tube bundle (relative to the radial direction) has an innermost tube layer, which is arranged adjacent to the core tube, and an outermost tube layer, the the radial direction is further away from the core tube and in particular encloses the innermost layer of pipe (and possibly the pipe layers provided therebetween).
  • the at least one second fluid can thus enter into an indirect heat exchange with the first fluid guided in the jacket space.
  • Tube bundle is due to the lower material thicknesses of the tubes of the tube bundle much faster than the cooling or reheating of the core tube. The resulting thermally induced stresses act primarily on the innermost layer of the tube bundle. Too high voltages or frequent
  • the heat exchanger according to the invention for indirect heat transfer between a first fluid and at least one second fluid has a jacket extending along a longitudinal axis, which surrounds a jacket space for receiving the first fluid, and a core tube arranged in the jacket space, which extends along the longitudinal axis , as well as one in the shell space
  • the tubes are helically wound on the core tube, so that the tube bundle in the radial direction of the core tube or tube bundle has a plurality of stacked tube layers.
  • the said radial direction extends in each case from the core tube or from the longitudinal axis to the outside and is perpendicular to the longitudinal axis or the core tube.
  • the heat exchanger prefferably has a carrier layer which is formed from at least one longitudinally extended element wound onto the core tube, between an innermost active tube layer (ie pipe layer through which a process medium or fluid flows) of the tube bundle and the core tube is set up and provided, not to be traversed by a fluid.
  • the carrier layer is therefore also referred to as a dummy tube layer, since it does not carry any process fluid and therefore leaves no leakage fluid when the carrier layer is damaged.
  • the carrier layer or dummy tube layer thus absorbs the thermally induced voltages and compensates for them. Any damage to the dummy pipe layer has no effect on the operation of the
  • Heat exchanger since the carrier layer does not carry fluid.
  • the use of a carrier layer has the further advantage that even when winding the heat exchanger now lower voltages occur at the innermost (actual) pipe layer, since the bending radius now correspondingly larger fails at the innermost layer of pipe.
  • the carrier layer is furthermore preferably designed to introduce the entire load of the tube layers into the core tube.
  • the at least one longitudinally extending element is wound onto the core tube, in particular helically, the elongated element preferably being wound over the entire length of the tube bundle along the longitudinal axis, onto the core tube.
  • the elongated element is preferably wound in one layer onto the core tube.
  • the elongate member has a constant outer diameter over its entire length, and preferably a circular one
  • the elongated element may also have a cross-sectional contour deviating therefrom
  • the at least one longitudinally extending element can be formed from a solid material, so that the elongate element has no cavity which could be suitable for guiding a fluid.
  • the at least one elongate element may also be formed as a tube or hollow profile.
  • this is in particular not connected to nozzles or inlets or outlets of the heat exchanger, since it is expressly not to be involved in the management of any process fluid.
  • the elongate element has an outer diameter which is smaller, greater than or equal to the outer diameter of the tubes of the tube bundle.
  • the elongate element can be formed from or comprise various suitable materials, in particular Teflon, PTFE, aluminum, steel.
  • the innermost tube layer of the tube bundle extends over along the longitudinal axis
  • Spacer is arranged on the carrier layer.
  • spacers are preferably also arranged between each two adjacent tube layers of the tube bundle, which each extend along the longitudinal axis.
  • the number of spacers in the spaces between each two adjacent tube layers or between the carrier layer and the innermost layer of tubes is preferably constant, wherein the spacers are arranged in groups in the radial direction one above the other, so that the load of the outer
  • Pipe layers can be safely introduced via the spacers in the core tube.
  • the core tube of the heat exchanger is preferably arranged coaxially to the jacket.
  • FIG. 1 is a fragmentary sectional view of an inventive device.
  • Fig. 2 is a fragmentary sectional view of a core tube
  • Tube bundle of a heat exchanger according to the invention.
  • FIG. 1 shows in connection with FIG. 2 an embodiment of a heat exchanger 1 according to the invention.
  • the heat exchanger 1 is designed for the indirect heat transfer between a first and at least one second fluid S, S 'and has a jacket 10 which surrounds a jacket space M for receiving the first fluid S, for example via a Inlet nozzle 101 on the jacket 10 in the shell space M can be introduced and deducted from the jacket space M via a corresponding outlet port 102 on the shell 10, wherein the first fluid S is applied to a arranged in the shell space M tube bundle 2 of the heat exchanger 1 from above and for example on a Top O of the tube bundle 2 is given.
  • the jacket 10 of the heat exchanger 1 extends along a longitudinal axis z, which extends relative to a properly arranged state of the heat exchanger 1 along the vertical.
  • the tube bundle 2 has a plurality of tubes 20 for receiving the at least one second fluid S '.
  • Various second fluids S ' may e.g. in associated tubes of the tube bundle 2, that is, the tube bundle 2 is divided according to the number of the second fluids S 'to be led.
  • the tubes 20 are helical to a core tube 21 of the
  • a radial direction R which is perpendicular to the longitudinal axis z, one above the other, wherein the core tube 21 also extends along the longitudinal axis z and coaxial with the jacket 10th is arranged in the shell space M.
  • Relative to the radial direction R therefore, there is an innermost layer of tubes 201, which is surrounded in particular by further tube layers 200 arranged one above the other in the radial direction R, wherein an outermost layer of tubes 202 ultimately surrounds the tube layers 200, 201 underneath and an outer side of the tube bundle 2 trains.
  • the individual pipe layers 200, 201, 202 are preferably fixed to one another via spacers 6 extending along the longitudinal axis z, with a plurality of spacers 6 being arranged one above the other in the radial direction R of the tube bundle 2.
  • a constant number of spacers 6 is preferably provided between the adjacent pipe layers 200.
  • a plurality of tubes 20 can each be combined in a tube plate 104, wherein the second fluid S 'or a plurality of second fluids S' can be introduced into the tubes 10 via inlet sockets 103 on the jacket 10 and can be withdrawn from the tubes 20 via drain sockets 105 ,
  • heat can be transferred indirectly between the first fluid S and the at least one second fluid S ', wherein
  • These fluids S, S ' can be performed, for example, in countercurrent through the heat exchanger 1.
  • the jacket 10 and the core tube 21 are in particular at least partially cylindrical, so that the longitudinal axis z forms a cylinder axis of the shell 10 and the concentric core core 21 extending therein.
  • the jacket space M may further include a preferably cylindrically shaped shirt.
  • the heat exchanger 1 has a carrier layer 203 between the innermost layer of tubes 201 of the tube bundle 2 and the core tube 21 (not shown in FIG. 1 for reasons of clarity), which is preferably helical from a core tube 21 wound longitudinally extending element 22 is formed, wherein the support layer 203 is arranged and provided, not by a fluid, in particular a second fluid S ', to be flowed through.
  • the carrier layer 203 contacts the core tube 21 and encloses it closely, so that the load of the tube bundle 2 can be introduced into the core tube 21 via the carrier layer 203.
  • the elongated element 22 may be formed from a solid material. Alternatively, the elongated element 22 may also be formed by a tube or hollow profile with a particular circular cross-section.
  • the carrier layer 203 which is also referred to as a dummy tube layer 203, since it does not carry a second fluid S ', is in particular intended to be thermally induced

Landscapes

  • 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)

Abstract

L'invention concerne un échangeur de chaleur (1) servant au transfert indirect de chaleur entre un premier fluide (S) et au moins un second fluide (S') et comportant une enveloppe (10) qui s'étend le long d'un axe longitudinal (z) et qui entoure un espace enveloppant (M) recevant le premier fluide (S), un tube central (21) qui est agencé dans l'espace enveloppant (M) et qui s'étend le long de l'axe longitudinal (z), et un faisceau de tubes (2) qui est agencé dans l'espace enveloppant (M) et qui comporte une pluralité de tubes (20) recevant le ou les seconds fluides (S'), les tubes (20) étant enroulés en spirale autour du tube central (21), de sorte que le faisceau de tubes (2) présente une pluralité de couches de tubes (200, 201, 202). Selon l'invention, l'échangeur de chaleur (1) présente entre la couche de tubes la plus à l'intérieur (201) du faisceau de tubes (2) et le tube central (21) une couche de support (203) qui est constituée d'au moins un élément (22) allongé enroulé sur le tube central (21), la couche de support (203) étant conçue et configurée pour ne pas être parcourue par un fluide.
PCT/EP2017/025173 2016-06-21 2017-06-20 Échangeur de chaleur spiralé muni d'une couche de tubes factice entre le tube central et la couche de tubes la plus à l'intérieur Ceased WO2017220209A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16001389 2016-06-21
EP16001389.2 2016-06-21

Publications (1)

Publication Number Publication Date
WO2017220209A1 true WO2017220209A1 (fr) 2017-12-28

Family

ID=56363679

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/025173 Ceased WO2017220209A1 (fr) 2016-06-21 2017-06-20 Échangeur de chaleur spiralé muni d'une couche de tubes factice entre le tube central et la couche de tubes la plus à l'intérieur

Country Status (1)

Country Link
WO (1) WO2017220209A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220196331A1 (en) * 2019-04-12 2022-06-23 Linde Gmbh Web design and arrangement for reducing a radial distribution fault in a wound heat exchanger

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB970098A (en) * 1962-08-22 1964-09-16 Taylor Reid & Company Ltd Improvements in heat exchanging devices
WO2003040641A1 (fr) * 2001-11-09 2003-05-15 Aalborg Industries A/S Echangeur de chaleur, dispositif comprenant un echangeur de chaleur et procede de fabrication de cet echangeur de chaleur
DE102007036181A1 (de) * 2006-08-04 2008-02-07 Linde Ag Gewickelter Wärmetauscher mit mehreren Rohrbündellagen
CN102538387A (zh) * 2011-11-22 2012-07-04 张周卫 Lng低温液化三级制冷螺旋缠绕管式换热装备
DE102012014101A1 (de) * 2012-07-17 2014-01-23 Linde Aktiengesellschaft Gewickelter Wärmeübertrager
WO2015007375A1 (fr) * 2013-07-16 2015-01-22 Linde Aktiengesellschaft Échangeur de chaleur muni d'un élément élastique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB970098A (en) * 1962-08-22 1964-09-16 Taylor Reid & Company Ltd Improvements in heat exchanging devices
WO2003040641A1 (fr) * 2001-11-09 2003-05-15 Aalborg Industries A/S Echangeur de chaleur, dispositif comprenant un echangeur de chaleur et procede de fabrication de cet echangeur de chaleur
DE102007036181A1 (de) * 2006-08-04 2008-02-07 Linde Ag Gewickelter Wärmetauscher mit mehreren Rohrbündellagen
CN102538387A (zh) * 2011-11-22 2012-07-04 张周卫 Lng低温液化三级制冷螺旋缠绕管式换热装备
DE102012014101A1 (de) * 2012-07-17 2014-01-23 Linde Aktiengesellschaft Gewickelter Wärmeübertrager
WO2015007375A1 (fr) * 2013-07-16 2015-01-22 Linde Aktiengesellschaft Échangeur de chaleur muni d'un élément élastique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220196331A1 (en) * 2019-04-12 2022-06-23 Linde Gmbh Web design and arrangement for reducing a radial distribution fault in a wound heat exchanger

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