EP3447425A1 - Aménagements dans un échangeur de chaleur enroulé permettant la réduction d'écoulement turbulent de gaz - Google Patents

Aménagements dans un échangeur de chaleur enroulé permettant la réduction d'écoulement turbulent de gaz Download PDF

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Publication number
EP3447425A1
EP3447425A1 EP17020369.9A EP17020369A EP3447425A1 EP 3447425 A1 EP3447425 A1 EP 3447425A1 EP 17020369 A EP17020369 A EP 17020369A EP 3447425 A1 EP3447425 A1 EP 3447425A1
Authority
EP
European Patent Office
Prior art keywords
tube bundle
heat exchanger
tube
guide element
distributor arm
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Withdrawn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
EP17020369.9A
Other languages
German (de)
English (en)
Inventor
Manfred Steinbauer
Jürgen Spreemann
Luis Matamoros
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
Priority to EP17020369.9A priority Critical patent/EP3447425A1/fr
Priority to US16/107,096 priority patent/US20190063843A1/en
Priority to RU2018130352A priority patent/RU2018130352A/ru
Priority to CN201810960640.5A priority patent/CN109425243A/zh
Publication of EP3447425A1 publication Critical patent/EP3447425A1/fr
Withdrawn legal-status Critical Current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
    • F28D7/024—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 the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
    • F25J5/002—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger
    • 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
    • F28D3/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits
    • F28D3/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits with tubular conduits
    • 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
    • F28D3/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits
    • F28D3/04—Distributing arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F25/00—Component parts of trickle coolers
    • F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • 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
    • 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
    • F28F9/0268—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 in the form of multiple deflectors for channeling the heat exchange medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/32—Details on header or distribution passages of heat exchangers, e.g. of reboiler-condenser or plate heat exchangers
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0033—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cryogenic applications
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0061—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications
    • F28D2021/0064—Vaporizers, e.g. evaporators
    • 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
    • F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
    • F28F2009/224—Longitudinal partitions

Definitions

  • the invention relates to a wound heat exchanger.
  • Such wound heat exchangers are used in a wide variety of processes, e.g. in ethylene or natural gas plants (short LNG plants).
  • the coolant in the jacket space of the heat exchanger is placed on a tube bundle arranged in the jacket space, which has helically wound tubes wound on a core tube, in which the process stream to be cooled is guided.
  • the coolant is introduced into the heat exchanger in a two-phase state, wherein in a distributor, the liquid phase is separated from the gaseous phase and distributed to the tube bundle via distributor arms.
  • gas vortices may form in the jacket space. If such vortices are in the upper portion of the heat exchanger in the region of the top of the tube bundle, they can deflect the liquid phase flowing down from the distributor arms in a direction transverse to the longitudinal axis of the shell or tube bundle, with the result that the liquid phase is not can be given more evenly distributed to the tube bundle. Such a misallocation of the liquid phase or of the coolant significantly reduces the effectiveness of the heat exchanger.
  • the present invention therefore has the object to provide a heat exchanger, which is improved in terms of the aforementioned problem.
  • At least one guide element protrudes from an underside of the bottom of the at least one distributor arm facing the upper side of the tube bundle in the direction of the upper side of the tube bundle or extends along the longitudinal axis towards the upper side of the tube bundle, wherein the at least one guide element extends in a circumferential direction of the tube bundle at least over half the width of the bottom of the at least one distributor arm and / or wherein the at least one guide element projects along the longitudinal axis into a gap of the tube bundle between two tube layers of the tube bundle.
  • the said upper side of the tube bundle is formed by the uppermost pipe sections of the tubes of the tube bundle wound around the core tube and extends along a horizontal plane or along a plane which runs perpendicular to the longitudinal axis.
  • said top does not have to be completely flat or parallel to this plane, but may have bends and a varying Have height profile (with respect to the longitudinal axis).
  • This is due in particular to the fact that the individual tubes or pipe sections have a circular cross-section at the said upper side of the tube bundle.
  • the tube ends each end in a tube plate in which the individual tubes are anchored, wherein the respective tubesheet is fixed to the cylindrical shell of the heat exchanger. Also, through the tube bundle led away from the tube bundle, the top of the tube bundle deviates from a horizontal course.
  • the tubes of the tube bundle can be wound onto the core tube or fixed thereon in such a way that the core tube can remove the load of the tube bundle.
  • the removal of the bundle weight can be done via so-called support webs, which are arranged between the pipe layers and are connected thereto. The support webs can protrude beyond the top of the tube bundle and can be welded or fixed there on support arms.
  • the support arms may in particular be fixed both on the core tube and on the jacket; They thus connect core tube and jacket above the tube bundle in the form of spokes. Ultimately wear in this variant, the support arms from the tube bundle and the core tube on the coat.
  • This upper part in the heat exchanger forms the so-called fixed bearing, since the jacket and the core tube are firmly connected to each other here, while down in the heat exchanger, the core tube is connected in particular via a sliding bearing with the jacket.
  • the fact that the at least one guide element projects in the direction of the upper side of the tube bundle or extends toward the upper side of the tube bundle may in particular mean that the at least one guide element ends in front of or at the upper side of the tube bundle, wherein between the guide device and the top preferably has clearance or just enough clearance to avoid mechanical contact with the tube bundle to protect the tube bundle from leaks.
  • the at least one guide element projects into the tube bundle along the longitudinal axis, in particular into a gap (or a plurality of gaps) between two tube layers of the tube bundle.
  • these two Pipe layers may be, for example, in the radial direction adjacent pipe layers of the tube bundle.
  • the at least one guide element only partially protrude into the tube bundle or over its entire length in a direction perpendicular to the longitudinal axis extending plane.
  • a suitable gap into which the at least one guide element can protrude can also be present between two pipe layers which are not directly adjacent in the radial direction.
  • the tube layers end up at different heights along the longitudinal axis of the sheath (these differences may, for example, be between 100 mm and 150 mm).
  • these differences may, for example, be between 100 mm and 150 mm.
  • the n-th pipe layer ends up high, while the (n + 1) -th pipe layer ends low and the (n + 2) -th pipe layer goes up again.
  • the respective guide element in the axial direction, ie, along the longitudinal axis, not down to the top of the Tube bundle or beyond (egin a gap of the tube bundle) extends, but ends above the top.
  • the respective guide element can in this case extend over at least 70%, in particular at least 80%, in particular at least 90%, in particular at least 95% or in particular at least 99% of the vertical distance between the upper side of the tube bundle and the underside of the bottom of the respective distributor arm.
  • the at least one guide element is preferably formed separately from the core tube in all embodiments, that is, in other words, that the core tube is not understood to be a guide element departing from the bottom of the at least one distributor arm.
  • the at least one guide element is designed or fulfilled due to its arrangement with respect to the top of the tube bundle the function of preventing a cross flow of the gaseous and / or liquid phase of the first medium at the top of the tube bundle (eg due to gas vortices).
  • a transverse flow is understood as meaning, in particular, a flow which takes place in a direction which runs along the top of the tube bundle runs or whose direction has at least one component which is perpendicular to the longitudinal axis.
  • the guide element can either shield the liquid phase from gas vortexes, in particular transverse flows at the top of the tube bundle, or it can suppress or at least reduce such transverse flows through its arrangement between the bottom of the at least one distributor arm and the top side of the tube bundle, so that the liquid phase of the Gravity following directly down can be distributed.
  • the at least one guide element is formed as a guide plate, in particular baffle, which is connected in particular via an upper edge region to the bottom of the at least one distributor arm, wherein an opposite lower edge, as described above, extends at least down to the top of the tube bundle.
  • the at least one guide element or the guide plate is perpendicular to the underside of the bottom of the at least one Verteilerames.
  • the guide plate forms in particular a closed surface without openings / holes.
  • the at least one guide element extends along a circumferential direction of the tube bundle and in particular along the longitudinal axis of the jacket.
  • the at least one distributor arm has two side walls which are opposite one another in the circumferential direction of the tube bundle or of the jacket and extend along the radial direction of the tube bundle from inside to outside towards the jacket of the heat exchanger and along each the longitudinal axis from the bottom upwards to a roof of the at least one distributor arm.
  • the at least one guide element in the circumferential direction of the shell or of the tube bundle from one side wall to the other side wall. That is with In other words, that the guide element extends in the circumferential direction over an entire width of the bottom of the respective distributor arm.
  • the at least one guide element has a curvature in a plane perpendicular to the longitudinal axis, in particular a curvature having a constant radius of curvature, so that in particular an inner side of the guide element facing the core tube has a constant distance to the longitudinal axis everywhere ,
  • the at least one guide element thus has a concavely curved inner side, which faces the core tube, and an outer side facing away from the core tube or the inner side, which has a convex curvature.
  • the said radius of curvature of the at least one or of the respective guide element between the radius of curvature of the tubes of a tube layer lying further inward in the radial direction and the radius of curvature of the tubes of a tube layer lying further outward in the radial direction.
  • the heat exchanger has a plurality of guide elements, each projecting from the underside of the bottom of the at least one distributor arm facing the upper side of the tube bundle in the direction of the upper side of the tube bundle or respectively along the longitudinal axis to the upper side extend the tube bundle (see also above), wherein the guide elements each extend in a circumferential direction of the tube bundle at least over half the width of the bottom of the at least one distributor arm and / or wherein the guide elements each along the longitudinal axis in a gap of the tube bundle between two tube layers protrude the tube bundle.
  • these multiple guide elements can be a plurality of the guide plates described above (in particular curved), which can each stand in particular with a lower edge in gaps between adjacent tube layers.
  • the heat exchanger may of course have a plurality of distributor arms, each in a radial direction from the core tube to the jacket extend, wherein between each two adjacent in the circumferential direction of the shell distributor arms, there is a gap through which tubes or each a Rohrzopf of the tube bundle are guided past the distributor arms to an associated tube plate, which is fixed to the jacket.
  • at least one or more guide elements according to the invention can be provided on all distributor arms.
  • the at least one distributor arm or the respective distributor arm can have a circular-sector-shaped, in other words, a horizontal plane or a plane extending perpendicular to the longitudinal axis. pie-like, have cross-section. Accordingly, the respective bottom of a distributor arm is preferably designed in accordance with circular sector.
  • a plurality of guide elements in particular guide plates (see above) are provided, it is preferably provided that the guide elements are arranged next to one another in a radial direction along which the at least one distributor arm extends from the core tube to the jacket.
  • all guide plates may extend along the circumferential direction of the jacket, in particular along the underside of the base from one side wall to the other side wall of the respective distributor arm.
  • the individual guide elements or guide plates can each protrude into a gap between adjacent pipe layers of the tube bundle.
  • baffles further inward in the radial direction i.e., baffles closer to the core tube, may have a lesser length in the circumferential direction of the shell than the outermost edge plates, e.g. when the respective distributor arm has a circular sector-shaped cross section (see above) and the respective guide plate extends from one side wall of the respective distributor arm to the other side wall of the distributor arm.
  • the at least one guide element or the plurality of guide elements is in each case formed as a tube, which is in flow connection with an associated passage opening of the base.
  • the respective tube may be connected to an associated passage opening of the bottom of the respective distributor arm.
  • each passage opening of the respective distributor arm can be attached to such a tube as above be described connected.
  • a plurality of tubes are provided as guide elements, wherein a plurality of passage openings open into the same tube, which then has a correspondingly larger diameter.
  • the tubes do not necessarily have to have a circular cross section. Rather, the guide elements can here also each be formed by a channel extending in the direction of the longitudinal axis with a circumferential wall, wherein the channel is in flow communication with at least one passage opening of the bottom.
  • the at least one guide element forms a plurality of channels extending in the direction of the longitudinal axis with respective walls, wherein adjacent channels form common walls or adjoin the walls of adjacent channels, wherein the respective wall forms a region of the jacket space delimited between the bottom of the at least one distributor arm and the top of the tube bundle, in which opens at least one passage opening of the bottom of the at least one distributor arm.
  • the channels are formed in an octagonal cross-section, where n is greater than or equal to 3, in particular 4 or 6.
  • the at least one guide element is formed by a wall which extends along an edge of the floor and surrounds a region of the jacket space between the bottom of the at least one distributor arm and the upper side of the tube bundle the passage opening of the bottom of the at least one distributor arm open.
  • the wall may extend in particular from the core tube along the said edge in the radial direction to the front wall of the distributor arm, from there in the circumferential direction of the jacket to the opposite side wall of the distributor arm and from there along the radial direction back to the core tube.
  • a wall which is extended in the direction of the longitudinal axis is bounded by the wall, wherein the Wall can form an extension of the side walls of the Verteilerarmes in the direction of the longitudinal axis outgoing from the bottom of the Verteilarms.
  • FIG. 1 shows in connection with the Figures 2 and 3 an embodiment of a heat exchanger according to the invention for indirect heat transfer between a first and a second medium M, M '.
  • the heat exchanger 1 has a jacket 5 extending along a longitudinal axis z, which surrounds a jacket space 6, which serves to receive the first medium M, and a plurality of tubes 30, which are each helically wound onto a core tube 300 of the heat exchanger 1, the extends in the shell space 6 along the longitudinal axis z, so that the tubes 30 form a arranged in the shell space 6 tube bundle 3 of the heat exchanger 1, which has several superimposed in the radial direction R of the tube bundle 3 tube layers 32, wherein the second medium M 'in the tube bundle.
  • the tube bundle 3 is guided so that indirectly heat between the first medium M and the second medium M 'is transferable.
  • the second medium M ' is in particular by at least one nozzle provided on the jacket 5 (in the FIG. 3 not shown) in the tube bundle 3 can be introduced and deducted via at least one provided on the jacket 5 nozzle 4 from the tube bundle 3.
  • the tube bundle 3 may be surrounded by a shirt 7, which serves to reduce a bypass flow in the shell space 6 (on the tube bundle 3 over).
  • the heat exchanger 1 also has at least one distributor arm 21, preferably a plurality of distributor arms 21, which serve for distributing a liquid phase F of the first medium M onto an upper side 3a of the tube bundle 3 facing the respective distributor arm 21, wherein the respective distributor arm 21 is one of the upper side 3a opposite bottom 200 having through holes 205, so that the liquid phase F on the through-holes 205 on the upper surface 3a of the tube bundle 3 can be modbar.
  • the Figures 2 . 4 . 5, 6 and 8th show in contrast to FIG. 3 for the sake of simplicity only one distributor arm 21.
  • the respective distributor arm 21 is in particular in a radial direction R, which is perpendicular to the longitudinal axis z, from the core tube 300 from and is preferably in flow communication with this.
  • the core tube 300 starts from a pre-distributor 20 arranged above the tube bundle 3 and the distributor arms 21, in which the first medium M is collected and, in particular, degassed.
  • the liquid phase F can accordingly flow from the pre-distributor 20 into the core tube 300 and then into the respective distributor arm 21.
  • the liquid phase F can also be fed into the respective distributor arm 21 via an annular channel which, for example, rotates on the inside of the jacket 5.
  • the at least one guide element 22 extends in a circumferential direction U of the tube bundle 3 at least over half the width B of the bottom 200 of the at least one distributor arm 21 (cf. Fig. 2 ).
  • a plurality of such guide elements 22 are provided, which are each formed as a guide plate.
  • the respective guide plate 22 is connected to the underside 200a of the base 200 of the respective distributor arm 22 via an upper edge region 221, with an opposing lower edge region 222 of the respective guide plate 22 on the upper side 3a of the tube bundle 3 ends or, as in the FIG. 1 shown, in each case in a gap 31 between two in the radial direction R superimposed pipe layers 32 protrudes.
  • this can be a gap 31 between adjacent pipe layers 32 or a different depression / gap between two pipe layers 32, eg a gap above a pipe layer, which is lower in comparison to the two pipe layers adjoining on both sides and therefore represents a gap.
  • a mechanical contact between the respective guide element 22 and the tube bundle 3 is avoided in order to reduce the risk of leakage of the tube bundle 3.
  • the guide elements or plates 22 are preferably arranged in the radial direction R, along which the respective distributor arm 21 extends from the core tube 300 toward the jacket 5, next to each other, wherein in a gap between two in radial Direction R adjacent guide plates 22 each open one or more of the through holes 205, so that the liquid phase F can be discharged into the respective space above the top 3a of the tube bundle 3.
  • the guide elements 22 configured in this way serve to prevent a transverse flow of the gaseous phase G of the first medium M on or along the top side 3a of the tube bundle 3 or along the radial direction R. As a result, the liquid phase F can be discharged undisturbed via the distributor arms 21 along the longitudinal axis z downwards and a maldistribution of the liquid phase F is prevented.
  • the respective guide plate 22 preferably along a circumferential direction U of the tube bundle 3 and the jacket 5 and preferably has a respective curved course (in particular with a radius of curvature R '), so that a concavely curved side of the respective guide plate 22 the Core tube 300 faces, whereas the respective convex curved side facing the jacket 5 to the outside.
  • the respective distributor arm 21 furthermore has two side walls 203, 204 which lie opposite one another in the circumferential direction U of the tube bundle 3 or of the jacket 5 and which extend in each case along the radial direction R of the tube bundle 3 from the inside to the outside towards the jacket 5 of the heat exchanger 1 and in each case proceed along the longitudinal axis z from an edge 200b of the bottom 200 of the respective distributor arm 21 upwards.
  • the respective distributor arm 21 furthermore has an end wall 201, which lies opposite the jacket 5 in the radial direction R and connects the two side walls 203, 204 with one another.
  • the respective distributor arm 21 is preferably closed by a roof 206 which is connected to the respective side walls 203, 204 and the end wall 201 and which rises towards the core tube 300 so that a gaseous phase G of the first medium M travels along the roof 206 Core tube 300 can ascend towards.
  • the respective guide element 22 extends on the bottom 200 a of the bottom 200 of the respective distributor arm 21 in the circumferential direction U from one side wall 203 to the other side wall 204 (ie over an entire width B of the bottom 200 in the circumferential direction U, the width B of the bottom 200 may change in the radial direction R, in particular in a sector-shaped bottom 200).
  • a gap is preferably present, through each of which an end portions of the tubes 3 formed pipe braid 33 of the tube bundle 3 is guided to the distributor arms 21 over to an associated tube plate 34, each on Sheath 5 is fixed.
  • the Fig. 4 shows a further embodiment of the present invention, in each of which a continuous guide element 22 protrudes from the underside 200a of the bottom 200 of the respective distributor arm 21 in the direction of the upper side 3a of the tube bundle 3.
  • the respective guide element 22 forms a plurality of channels 22a which each extend along the longitudinal axis z, wherein the respective channel 22a is surrounded by a circumferential wall 22b and in each case a region B 'of the jacket space 6 between the bottom 200 of the at least one distributor arm 21 and the upper side 3a of the tube bundle 3, into which at least one passage opening 205 of the bottom 200 of the at least one distributor 21 opens.
  • the individual circumferential walls 22b are hexagonal in shape, in particular in cross-section (relative to a cross-sectional plane extending parallel to the respective bottom 200), and each connected to adjacent walls 22b, so that the respective guide element 22 forms a honeycomb-shaped structure as a whole FIG. 4 is apparent.
  • the individual channels 22a therefore share their respective circumferential wall 22b with the adjacent channels 22a.
  • FIG. 5 shows a modification of the in FIG. 4 shown guide element 22, wherein here in contrast to FIG. 4 the individual channels 22a have a rectangular shape relative to the above-defined cross-sectional plane.
  • the channels 22a at the edge 200b of the bottom 200a of the respective Bodens 200 in particular due to the preferred circular sector-shaped configuration of the bottoms 200 of the distributor arms 21) of the hexagonal or rectangular shape differ.
  • FIG. 6 shows in connection with the FIG. 7 a further embodiment of a guide element 22 according to the invention, in which the at least one guide element 22 is formed by a wall 22 which extends along an outer edge 200b of the bottom 200 and from the bottom 200a of the bottom 200 of the associated distributor arm 21 in the direction of the top 3a of the tube bundle 3 protrudes.
  • the wall or the guide element 22 in this case has a first portion 22c, which extends in the radial direction R from the core tube 300 to the outside to the frontal wall 201 of the associated distribution arm 21.
  • a second section 22d of the wall 22 connected to the first section 22c of the wall 22 extends in the circumferential direction U to the opposite section of the edge 200b of the floor 200, where it is connected to a third section 22e of the wall 22, the third section 22e of the wall 22 extends along the radial direction R back to the core tube 300.
  • the guide element 22 thus surrounds a region B 'of the jacket space 6 between the bottom 200 of the associated distributor arm 21 and the upper side 3a of the tube bundle 3, into which the passage opening 205 of the bottom 200 of the respective distributor arm 21 opens.
  • the individual sections 22c, 22d, 22e of the wall 22 are connected via an upper edge region 221 to the underside 200a of the respective bottom 200, whereas the respectively opposite lower edge region 222 runs along the upper side 3a of the tube bundle 3.
  • the respectively opposite lower edge region 222 may also project at least in sections into one or more gaps of the tube bundle 3.
  • the respective distributor arm 21 has a plurality of guide elements 22 which are each configured here as a channel 22 with a circumferential wall 220, whereby the respective channel 22 can be formed by a tube 22 with a particular circular cross-section, the respective tube 22 or the respective channel 22 from the bottom 200 a of the bottom 200 of the respective distributor arm 21 goes off.
  • the passage openings 205 of the bottom 200 of the respective distributor arm 21 each open into one of the tubes 22.
  • the tubes 22 each extend along the Longitudinal axis z down to the top 3a of the tube bundle 3 and terminate at the top 3a or are in each case with one end in a gap of the tube bundle 3 in, for example, a between two pipe layers 32 existing gap 31st ⁇ B> LIST OF REFERENCES ⁇ / b> 1 Heat exchanger or latent heat storage 3 tube bundle 3a top 4 Support 5 coat 6 shell space 7 shirt 10 web 20 preliminary distributor 22 Guide elements, wall 22a channel 22b wall 22c, 22d, 22e section 30 Tube 31 gap 32 pipe layer 33 Rohrzopf 34 tube sheet 200 ground 200a bottom 200b edge 201 Front wall 203, 204 sidewall 205 Through opening 206 top, roof 220 wall 221 Upper edge area 222 Lower edge area 300 core tube M First medium M ' Second medium R Radial direction U circumferentially z longitudinal axis B width B ' Area R ' radius of curvature

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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)
EP17020369.9A 2017-08-22 2017-08-22 Aménagements dans un échangeur de chaleur enroulé permettant la réduction d'écoulement turbulent de gaz Withdrawn EP3447425A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP17020369.9A EP3447425A1 (fr) 2017-08-22 2017-08-22 Aménagements dans un échangeur de chaleur enroulé permettant la réduction d'écoulement turbulent de gaz
US16/107,096 US20190063843A1 (en) 2017-08-22 2018-08-21 Internals in a helically coiled heat exchanger for suppressing gas vortices
RU2018130352A RU2018130352A (ru) 2017-08-22 2018-08-21 Внутренние элементы в спирально закрученном теплообменнике для подавления газовых вихрей
CN201810960640.5A CN109425243A (zh) 2017-08-22 2018-08-22 用于抑制气体涡流的螺旋缠绕式换热器中的内部结构

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EP17020369.9A EP3447425A1 (fr) 2017-08-22 2017-08-22 Aménagements dans un échangeur de chaleur enroulé permettant la réduction d'écoulement turbulent de gaz

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US (1) US20190063843A1 (fr)
EP (1) EP3447425A1 (fr)
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JP7180130B2 (ja) * 2018-06-07 2022-11-30 富士通株式会社 液浸槽
EP3719433A1 (fr) * 2019-04-02 2020-10-07 Linde GmbH Distributeur de fluide réglable d'un échangeur de chaleur enroulé permettant de réaliser des différentes charges de fluide
DE102019207799A1 (de) * 2019-05-28 2020-12-03 Mahle International Gmbh Tauchrohr zur Kältemittelverteilung in einem Chiller
WO2022268360A1 (fr) * 2021-06-23 2022-12-29 Linde Gmbh Injection réglable pour réaliser différentes distributions locales de fluide frigorigène

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US20190063843A1 (en) 2019-02-28
RU2018130352A (ru) 2020-02-25

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