EP2304370B1 - Conversion set for a tube bundle heat exchanger - Google Patents

Conversion set for a tube bundle heat exchanger Download PDF

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Publication number
EP2304370B1
EP2304370B1 EP08773495A EP08773495A EP2304370B1 EP 2304370 B1 EP2304370 B1 EP 2304370B1 EP 08773495 A EP08773495 A EP 08773495A EP 08773495 A EP08773495 A EP 08773495A EP 2304370 B1 EP2304370 B1 EP 2304370B1
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EP
European Patent Office
Prior art keywords
plate
heat exchanger
plates
conversion set
tube bundle
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Application number
EP08773495A
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German (de)
French (fr)
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EP2304370A1 (en
Inventor
Mike Hallmann
Jörg HORNIG
Dieter Engels
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Gesmex GmbH
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Gesmex GmbH
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Publication of EP2304370A1 publication Critical patent/EP2304370A1/en
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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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0012—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the apparatus having an annular form
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • 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
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • 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
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/02—Removable elements

Definitions

  • the invention relates to a conversion kit for a cylinder housing having a tube bundle heat exchanger.
  • Tube bundle heat exchangers are frequently used in industrial process plants.
  • a shell-and-tube heat exchanger usually consists of an outer shell and an inner shell and an inner shell, i. arranged in the housing, tube bundle. Between these two separate rooms, the exchange of process heat takes place. The heat from a first hot heat transfer medium is absorbed by a second heat transfer medium to be heated, whereby the energy transfer is realized.
  • Tube bundle heat exchangers are very stable and therefore also suitable for use in applications with high pressures, for example in hydrogenation plants in which a pressure of over 300 bar can prevail. The pressure differences occurring in these applications between the heat transfer medium flowing in the housing and the second heat transfer medium flowing in the tubes, so far only allowed the use of Rohrbündel Anlagen (2004).
  • tube bundle heat exchangers Disadvantage of tube bundle heat exchangers is that due to the laminar flow in the tubes and the relatively large wall thickness of the tubes, this can be 2 to 3 mm, only low heat transfer coefficients and thus a low efficiency of Tube bundle heat exchanger can be achieved. Therefore, large heat exchange surfaces are needed, whereby the shell and tube heat exchangers are relatively large and heavy and thus also very expensive. In addition, due to incomplete heat transfer from the hot heat transfer medium to the heat transfer medium to be heated, the energy costs of the plants increase.
  • the plate heat exchange unit can absorb the forces acting during operation of the heat exchanger by the cage construction of the two holding plates and the traction means arranged between them, which is designed as a flow direction sensor plate. As a result, a pressing apart of the heat exchanger plates of the plate pack is avoided when pressurized. Therefore, the plate heat exchanger unit can be used as such in existing shell and tube heat exchanger housing replace the usual tube bundles. The pressure jacket of conventional plate heat exchanger, which usually absorbs the forces occurring, is therefore no longer needed. As a result, a simple installation of the plate heat exchanger unit in the existing housing of the tube bundle heat exchanger is possible.
  • the modified tube bundle heat exchanger thus allows improved heat transfer, since with the help of the heat exchanger plates, a larger exchange surface is achieved and due to the smaller wall thickness of the heat exchanger plates, this is usually 0.6 to 1 mm, improved heat transfer is possible. This also makes it possible to save on the energy costs of the system.
  • a variation of the heat transfer surface of the existing heat exchanger is further possible by the diameter of the heat exchanger plates used and the number of heat exchanger plates used are selected accordingly. As a result, enlargement, reduction or uniformity of the heat transfer surface in comparison to the original existing Rohrtaündel Anlagen (2004) is possible.
  • the traction means Due to the special design of the traction means as flow direction sensor plate, the traction means have a dual function. On the one hand, they take on, as described above, occurring during operation of the heat exchanger forces, on the other hand, they prevent the occurrence of by-pass flows in the housing of the tube bundle heat exchanger. Thus, the plate heat exchanger unit has only a few components and can be manufactured relatively easily.
  • This plate heat exchanger comprises a plate pack, which is inserted in a pressure-stable housing, wherein the plate pack and the housing are adapted to each other.
  • the plate pack has interconnected heat exchanger plates and is bounded on both sides by package clamping plates.
  • the plate pack is braced by at least four clamping bolts, which extend between the package clamping plates and are welded to them.
  • the side plates On two sides of the plate pack side plates are mounted, which bear against the circumference of the plate pack and at their ends have U-shaped angled portions which are sealingly supported against the inner diameter of the housing, so that the shell-side heat transfer medium can not flow laterally between the housing and plate pack, but must flow between the heat exchanger plates.
  • the side plates In order to allow the insertion of the plate pack in the housing, the side plates must not be made too thick, so that the bends can yield. If the plate pack is inserted into the housing, the bends between the plate pack and the housing are braced and sealed. Due to the small thickness, the side plates can absorb no forces, but have only a flow and sealing function. As already stated, the height of the operating pressure is not defined. However, it can be assumed that the side plates in high-pressure applications with a pressure of over 250 bar, as is the case for example in hydrogenation plants, deform and can no longer fulfill the Strömungsleitauf inter.
  • the holding plates are substantially circular and each have at its edge a recess for the flow guidance of a flowing through the housing of the tube bundle heat exchanger, ie a housing-side heat transfer medium.
  • a housing-side heat transfer medium Through the recess in the retaining plates, the flow of the housing-side heat transfer medium steered in the desired direction.
  • the heat exchanger is designed to be suitable, then the recesses of the two holding plates of a plate heat exchanger unit are arranged on opposite sides of the plate pack, so that the housing-side heat transfer medium flows in on one side next to the heat exchanger plates, must flow through the plate pack and flows out again on the opposite side. But it is also possible a different flow guidance, in particular a multi-flow control is conceivable.
  • the recess at the edge of the retaining plates is ring-segment-shaped. This allows a very simple design of the holding plates.
  • the ring-segment-shaped recess in each holding plate an angle of about 90 °. This results in an opening angle of 90 °, through which the jacket or housing-side heat transfer medium flows into the plate pack, which is well suited for many applications.
  • the outer diameter of the holding plates is greater than the outer diameter of the heat exchanger plates of the plate package and corresponds approximately to the inner diameter of the housing of the tube bundle heat exchanger.
  • the holding plates bear against the inside of the housing with the major part of their circumference.
  • a flow path for the housing-side heat transfer medium is formed. Since the diameter of the holding plates approximately corresponds to the inner diameter of the housing, the heat exchanger plate unit can be easily inserted into the existing housing. It is a good centering of the plate heat exchanger unit in the housing possible.
  • a sealing effect is achieved between the holding plates and the housing, so that the housing-side heat transfer medium flows mainly through the recesses of the holding plates and thus the desired flow guidance is achieved.
  • the center axis of the at least one through hole in each holding plate is inclined and forms an angle with the center axis of the corresponding holding plate, so that the opening of the through hole on the inside of the holding plate is arranged closer to the edge of the holding plate as the opening of the through hole on the outside of the holding plate. It is thereby achieved that there is more space on the outside of each retaining plate for connection to another plate unit or to the already existing connections for the tube bundle heat exchanger.
  • an inner side of the at least one flow direction sensor plate bears against the outer diameter of the plate package and terminates an outer side of the at least one flow direction sensor plate with the outer diameter of the holding plates.
  • the at least one flow direction sensor plate is thus formed so that it fills the space between the plate pack and the inside of the housing so that it blocks a by-pass flow laterally past the plate pack.
  • the at least one flow direction sensor plate also supported on the inside of the housing, whereby a better positioning of the plate heat exchanger unit is made possible in the housing.
  • the flow direction sensor plate has a thickness of at least 5 mm. This ensures that the flow direction sensor plate has the desired strength to absorb the tensile forces that occur at a high pressure application with a pressure of at least 300 bar, for example in hydrogenation.
  • At least one further flow direction sensor plate is provided, wherein the two flow direction sensor plates are arranged on opposite sides of the plate package.
  • two flow channels for the housing-side heat transfer medium are formed, a feed channel and a discharge channel.
  • a first flange is arranged on the through hole of each holding plate and a further flange is provided on each holding plate.
  • a first tube welding end is arranged on the through hole of each holding plate and a further tube welding end is provided on each holding plate.
  • the tube welding ends can then be connected to existing connections of the tube bundle heat exchanger for the supply and removal of heat transfer media by a welded joint is attached. As a result, a secure connection is possible, there must be no seals, such as in a flange, are used.
  • each support plate on the inside of each support plate, a support plate is arranged and each support plate is connected by means of the support plate with the outermost heat exchanger plate of the plate package.
  • the production of the plate package is facilitated and allows a better connection between the relatively thick plate and the very thin heat exchanger plate.
  • the conversion kit comprises at least two plate heat exchanger units, which are connected to each other by means of the flanges or tube welding ends, wherein the holding plates and the flanges or pipe welding ends are designed so that they support the weight of the plate heat exchanger units can.
  • a plurality of plate heat exchanger units can be used in the already existing shell and tube heat exchanger housing.
  • the plate heat exchanger units can then be used with smaller heat exchange surfaces, i. H. be formed with a smaller number of heat exchanger plates, whereby the individual plate heat exchanger units have a higher stability.
  • the plate heat exchanger units are supported on each other at two points, whereby a buckling and thus wedging the plate heat exchanger units is avoided in the housing.
  • a good flow guidance of the housing-side heat transfer medium is possible.
  • the heat exchange surface of the existing heat exchanger can be easily increased or decreased by adding or removing individual plate heat exchanger units.
  • the housing of the tube bundle heat exchanger is a high-pressure housing for a pressure range of up to over 300 bar.
  • Fig. 1 shows a side view of a plate heat exchanger unit 1.
  • the plate heat exchanger unit 1 comprises a plate package 2, which has at least two heat exchanger plates 3.
  • the plate pack 2 comprises a multiplicity of heat exchanger plates 3.
  • Each heat exchanger plate 3 has at least one through-hole 4, preferably two through-holes 4. This is for example in Fig. 2 to see.
  • Two heat exchanger plates 3 are connected to each other along their through holes 4, preferably welded. The resulting plate pairs are welded together along the circumference of the heat exchanger plates 3, so that the plate package 2 is formed.
  • the thickness of the heat exchanger plates 3 is about 0.6 to about 1 mm. But it is also conceivable to use thicker or thinner heat exchanger plates.
  • the respective outer heat exchanger plate 3 is connected to a support plate 5, preferably welded.
  • the heat exchanger plates 3 are preferably circular, the support plates 5 are annular and have the same outer diameter as the heat exchanger plates 3.
  • the support plates 5 are thicker than the heat exchanger plates 3rd
  • the support plates 5 are in turn connected to retaining plates 6. Also, the connection between the support plates 5 and the holding plates 6 is preferably a welded connection.
  • the thickness of the support plates 5 is between the thickness of the support plates 6 and the thickness of the heat exchanger plates 3, there are good welds between the heat exchanger plates, respectively 3 and the support plates 5 and between the support plates 5 and the holding plates 6 possible.
  • Each of the holding plates 6 has at least one through hole 7.
  • the heat exchanger plates 3 are welded together in pairs along their through holes 4.
  • the through-holes 7 of the holding plates 6 communicate with the through-hole 4 of the heat exchanger plates 3 arranged adjacent to the holding plates 6, so that through these through-holes 4 and 7 a through-channel is formed for a heat transfer medium flowing through the plate pack 2, ie a plate-side.
  • each through-hole 7 of each holding plate 6 runs obliquely and forms an angle with the center axis 9 of the plate heat exchanger unit 1 and thus also with the center axis of the corresponding holding plate 6.
  • the openings of the through holes 7 on the inside of each holding plate 6, so the side of the holding plate 6, which faces the plate pack 2, further arranged on the edge of the holding plate 6 as the openings of the through holes 7 of the holding plate 6, which on the outside of the Holding plate 6 are formed.
  • the through-holes 7 of the two holding plates 6 of a plate heat exchanger unit 1 are arranged on opposite sides of the plate pack 2, so that the flow of the plate-side heat transfer medium in the plate pack 2 is deflected.
  • the heat exchanger plates 3 preferably embossments. By means of these embossings, a turbulent flow of the heat transfer media is generated, which improves the heat transfer.
  • first flanges 10 are attached.
  • the first flanges 10 are welded to the holding plates 6.
  • a second flange 11 is further attached, which is arranged symmetrically to the first, connected to the through hole 7 of the holding plate 6 flange 10.
  • the flanges 10, 11 are arranged on the outside of the holding plates 6.
  • the outer diameter of the holding plates 6 is larger than the outer diameter of the heat exchanger plates 3 and the outer diameter of the support plates 5.
  • the outer diameter of the holding plates 6 is approximately equal to the inner diameter of the housing of the tube bundle heat exchanger or is slightly smaller than the inner diameter of the housing of the tube bundle heat exchanger, in which Plate heat exchanger unit 1 is used.
  • the holding plates 6 are substantially circular, but at one point of their circumference have a recess 13 at the edge.
  • Fig. 1 is the recess 13 of the left holding plate 6 disposed at the top of the plate heat exchanger unit, the right holding plate 6 is arranged so that its recess 13 faces downward.
  • At least one flow direction sensor plate 12 extends between the two holding plates 6.
  • the flow direction transmitter plate 12 is connected to two holding plates 6, preferably welded.
  • the at least one flow direction sensor plate 12 and the two holding plates 6 form a cage construction for the plate pack 2.
  • the flow direction sensor plate 12 is designed as a traction means, so that the flow direction sensor plate 12 can absorb tensile forces and transmitted to the holding plates 6.
  • a first heat transfer medium flows through the plate pack 2.
  • pressure is exerted on the heat exchanger plates 3, which presses them apart.
  • the resulting forces are absorbed by the flow direction sensor plate 12 and the holding plates 6, so that the plate heat exchanger unit 1 can also be operated under pressure, without the need for a separate, pressure-resistant heat exchanger housing is required.
  • Fig. 2 shows a section through the plate heat exchanger unit 1 from Fig. 1 along the lines II-II.
  • each heat exchanger plate 3 has at least one through-hole 4, preferably two through-holes 4.
  • the heat exchanger plates 3 are connected in pairs along the through holes 4, preferably welded, so that a first flow channel is formed in the interior of the plate package 2.
  • the plate heat exchanger unit 1 has two flow direction sensor plates 12 which are symmetrical to each other on two sides of the plate package 2 are arranged.
  • Each flow direction transducer plate 12 extends around a portion of the circumference of the plate pack 2, wherein the inside of the flow direction transducer plates 12 rests on the outer diameter of the plate pack 2 and the outer side preferably closes with the outer diameter of the holding plate 6.
  • the housing-side heat transfer medium in the area in which the flow direction sensor plates 12 are arranged not laterally flow past the plate pack 2.
  • the flow direction sensor plates 12 are connected to the two holding plates 6, that the recesses 13 are arranged in the holding plates 6 where there are no flow direction sensor plates 12.
  • each holding plate 6 is substantially circular, wherein the outer diameter of each holding plate 6 is adapted to the inner diameter of the housing of the Rohbündel Anlagen (2004), in which the plate heat exchanger unit 1 is to be used.
  • each retaining plate 6 has a recess 13.
  • This recess 13 is substantially ring segment-shaped. But it would also be possible to form the recess 13 differently.
  • the ring-segment-shaped recess 13 extends over an angle of 90 °. It is also possible that the recess 13 extends over a smaller angle or a larger angle.
  • Each holding plate 6 also has a respective through hole 7 with an oblique central axis, wherein the opening of the through hole 7 on the inside of the holding plate 6 is closer to the edge of the holding plate 6 than the opening of the through hole 7 on the outside of the holding plate 6.
  • Inside here designates the side of each holding plate 6, which faces the plate pack 3, the outer side of each holding plate 6 is correspondingly the side facing away from the plate package 2 side of the holding plate 6.
  • a circular recess 14 is disposed on the outside of the holding plate 6, in the a flange or a Rohsch heatende can be used.
  • Fig. 4 shows a section through the holding plate 6 along the line IV-IV Fig. 3 ,
  • the central axis 8 of the through hole 7 of each plate 6 is oblique.
  • a second circular recess 14 for attachment of another flange or a similar device is provided.
  • this recess 14 does not extend over the entire thickness of the holding plates 6.
  • Each plate heat exchanger unit 1 is pressure resistant up to 25 bar or 40 bar depending on the design, since the holding plates 6 and the at least one flow direction sensor plate 12 and the two flow direction transducer plates 12 form a cage around the plate package 2 and so avoid pressing apart the heat exchanger plates 3, if this with Pressure are applied. Therefore, each plate heat exchanger unit 1 is adapted to be inserted into existing housings, such as shell and tube heat exchangers, and to replace the originally contained tube bundle unit. Tube bundle heat exchangers are usually relatively long to achieve the desired heat transfer area. It is therefore possible to connect a plurality of plate heat exchanger units 1 with each other, and to use the resulting composite in an existing jacket or in an existing housing of a shell and tube heat exchanger.
  • FIG. 5 is the connection of two above-described plate heat exchanger units 1 a, 1b shown.
  • each holding plate 6a, 6b of a plate heat exchanger unit 1 a, 1 b has at least one through hole 7 a, 7 b, which is connected to a flange 10 a, 10 b.
  • a second flange 11a, 11b is provided on each holding plate 6a, 6b, which is symmetrical to the first flange 10a. 10b is arranged.
  • the two plate heat exchanger units 1 a; 1 b are now arranged so that in each case two first flanges 10 a; 10b and two second flanges 11a; 11 b opposite.
  • the passageway of the first plate heat exchange unit 1a formed through the through holes 7a of the holding plates 6a and through the through holes 4a of the heat exchange plates 3a is connected to the corresponding through passage of the second plate heat exchange unit 1b.
  • the two second flanges 11a; 11b in addition to the holding plates 6a; 6b are arranged, are arranged opposite to each other.
  • the flange pairs 10a; 10b; 11a; 11b are connected together, preferably by a screw connection.
  • a seal is arranged, so that a tight connection is formed.
  • the plate heat exchanger units 1 a; 1 b vertically inserted into the plate heat exchanger housing.
  • the upper plate heat exchanger unit 1 b is supported by the two pairs of flanges 10 a, 10 b; 11a, 11b at the bottom plate heat exchanger unit 1 a from. Due to the symmetrical arrangement of the flanges 10a, 11a, 10b, 11b, a uniform support is ensured, a buckling of the upper plate heat exchanger unit 1b is avoided.
  • Fig. 6 is a section through a housing 15 of a shell and tube heat exchanger shown in the above-described, interconnected plate heat exchanger units 1 are used.
  • the plate heat exchanger units 1 are, as in Fig. 5 shown connected to each other via their flanges 10, 11. It is also possible to fix pipe welding ends to the holding plates 6 instead of the flanges and to connect the plate heat exchanger units 1 via the pipe welding ends. In each case, the tube welding ends of a first plate heat exchanger unit 1 are welded together with the tube welding ends of a second plate heat exchanger unit 1.
  • the plate heat exchange units 1 are connected to each other such that through the through holes 7 of the holding plates 6 and the through holes 4 in the heat exchanger plates 3, a first flow channel is formed, through which a first plate-side heat transfer medium flows.
  • the flange 10 of the first or lowermost plate heat exchanger unit 1 is connected to the existing inflow of the Rohrüündel Anlagen (2004) for the first heat transfer medium.
  • the flange 10 of the last or top plate heat exchanger unit 1 is connected to the existing connection of the tube bundle heat exchanger for the exit of the first heat transfer medium.
  • a second flow channel for a second, housing-side heat transfer medium is formed. This second heat transfer medium is passed through the existing connections of the shell-and-tube heat exchanger into and out of the housing 15.
  • each plate heat exchanger unit 1 are substantially circular, with their diameter being adapted to the inner diameter of the housing 15 of the tube bundle heat exchanger.
  • the outer diameter of each holding plate 6 substantially corresponds to the inner diameter of the housing 15 of the tube bundle heat exchanger or is slightly smaller than the inner diameter of the housing 15. If the plate heat exchanger units 1 are inserted into the housing 15 of the tube bundle heat exchanger, then the holding plates 6 on the inside of the housing 15. Thereby, the plate heat exchange units 1 are centered and supported in the housing 15, the insertion is facilitated.
  • a flow channel for the flowing through the housing 15 second heat transfer medium is formed.
  • the housing-side heat transfer medium is introduced into or adjacent to an end face of the housing 15 of the tube bundle heat exchanger in the housing 15. Since the retaining plate 6 of the first plate heat exchanger unit 1 rests with its circumference on the housing 15, the heat transfer medium can only flow past the retaining plate 6 through the recess 13.
  • the housing-side heat transfer medium then flows through the plate pack 2, whereby a heat transfer between the housing-side heat transfer medium and the heat transfer medium flowing through the plate pack 2 takes place.
  • each plate heat exchange unit 1 is preferably arranged so as to be rotated 180 ° with respect to the first holding plate 6 so that the recess 13 of the first holding plate 6 and the recess 13 of the second holding plate 6 are arranged on opposite sides of the plate package 2 ,
  • the housing-side heat transfer medium thus enters the housing 15 on one side of the plate pack 2, flows through the plate pack 2, emerges again on the opposite side and is forwarded there via the recess 13 of the second holding plate 6 into the subsequent plate heat exchanger unit 1.
  • the housing-side heat transfer medium can not flow laterally past the plate pack 2, but must flow through the plate pack 2.
  • the flow direction transducer plates 12 thus have two functions. On the one hand, they prevent the formation of by-pass flows in the housing-side heat transfer medium, which flow laterally past the plate pack 2 past the inside of the housing 15.
  • the flow direction transducer plates 12 are designed to be resistant to tensile stress, so that they can absorb the tensile forces arising during operation of the plate heat exchange unit 1 and transfer them to the holding plates 6.
  • the flow direction transducer plates 12 have a thickness of at least 5 mm, so that the desired strength is achieved.
  • the plate heat exchange units 1 Due to the cage construction of the plate heat exchanger units 1, these are also for the high pressure area, ie depending on the design for pressure ranges from 150 to about 300 bar, can be used.
  • the plate heat exchange units 1 can therefore be used in high-pressure jackets of tube bundle heat exchangers, which are used for example in hydrogenation plants.
  • the housing 15 of the tube bundle heat exchanger is designed so that it is pressure-stable to at least 300 bar.
  • the differential pressure between the housing-side heat transfer medium and the plate-side heat transfer medium is usually in the range of about 25 bar.
  • Fig. 6 the individual plate heat exchanger units 1 are connected in series. But it can also be provided that the plate heat exchanger units 1 are connected in parallel. For this purpose, further pipelines must be provided in the interior of the housing 15 of the tube bundle heat exchanger. It is also a combination of a series and a parallel connection of the individual plate heat exchanger units 1 possible.
  • the diameter of the retaining plates, the heat exchanger plates and the support plates can be adapted to existing housing inner diameter.
  • the outer diameter of the holding plates 6 preferably corresponds to the inner diameter of the housing 15, the diameter of the heat exchanger plates 3 can be arbitrarily smaller than the inner diameter of the housing 15.
  • the heat transfer area of the plate heat exchange units 1 can be further changed by the number of heat exchanger plates in the plate pack of the plate heat exchange unit. It is also possible to insert only a smaller number of plate heat exchanger units in an existing housing, so that the heat exchange surface of an existing shell and tube heat exchanger can be reduced, increased or kept constant when replacing the tube bundle unit by one or more plate heat exchanger units.
  • Fig. 6 the frontal cover of the tube bundle heat exchanger are not shown.
  • the housing 15 is closed at the end face with the already existing, constructed for the tube bundle heat exchanger covers.
  • the tube bundle heat exchangers are operated vertically.
  • the arranged in the housing 15 plate heat exchanger units 1 are then based on the flanges 10 and 11 from each other.
  • the lowest plate heat exchanger unit 1 is attached to a support.
  • the other plate heat exchanger units rely on the lowest plate heat exchanger unit and are not additionally attached to thermal expansion to enable.

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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)

Abstract

The present invention relates to a conversion set for a pipe bundle heat exchanger having a cylindrical housing. Using said conversion set, existing tube bundle heat exchangers can be changed over such that the efficiency and thus the heat transfer thereof is improved, large exchange surface areas are provided, and energy costs are reduced. The conversion set can also be used in high-pressure applications for pressures above 300 bar. According to the invention, the conversion set has at least one plate heat exchanger unit for replacing the tube bundle unit, comprising at least the following components: a plate packet having at least two heat exchanger plates, each comprising at least one through hole and welded to each other in pairs along the periphery thereof or along the periphery of the through holes, two mounting plates each having at least one through hole, wherein one each of the mounting plates is arranged at each end of the plate packet and is connected to each outermost heat exchanger plate of the plate packet, and at least one tension means extending in the longitudinal axis between the mounting plates and connected to both mounting plates, so that the two mounting plates and the tension means form a cage about the plate packet, said cage absorbing the forces arising in the plate packet in the operating state of the plate heat exchanger unit, wherein the outer diameter of the plate heat exchanger unit is adapted to the inner diameter of the cylindrical housing of the tube bundle heat exchanger, and the tension means is designed as a flow director extending at least partially around the periphery of the plate packet.

Description

Die Erfindung bezieht sich auf einen Umrüstsatz für einen ein zylindrisches Gehäuse aufweisenden Rohrbündelwärmetauscher.The invention relates to a conversion kit for a cylinder housing having a tube bundle heat exchanger.

Rohrbündelwärmetauscher sind in Prozessanlagen der Industrie häufig im Einsatz. Ein Rohrbündelwärmetauscher besteht üblicherweise aus einem äußeren Mantel bzw. einem äußeren Gehäuse und einem innenliegenden, d.h. in dem Gehäuse angeordneten, Rohrbündel. Zwischen diesen beiden getrennten Räumen findet der Austausch von Prozesswärme statt. Die Wärme von einem ersten heißen Wärmeträgermedium wird von einem zweiten aufzuheizenden Wärmeträgermedium aufgenommen, wodurch der Energietransfer realisiert wird. Rohrbündelwärmetauscher sind sehr stabil und daher auch für den Einsatz bei Anwendungen mit hohen Drücken, beispielsweise in Hydrieranlagen, in welchen ein Druck von über 300 bar herrschen kann, einsetzbar. Die bei diesen Anwendungen auftretenden Druckdifferenzen zwischen dem im Gehäuse strömenden Wärmeträgermedium und dem zweiten Wärmeträgermedium, das in den Rohren strömt, ließen bisher nur den Einsatz von Rohrbündelwärmetauschem zu.Tube bundle heat exchangers are frequently used in industrial process plants. A shell-and-tube heat exchanger usually consists of an outer shell and an inner shell and an inner shell, i. arranged in the housing, tube bundle. Between these two separate rooms, the exchange of process heat takes place. The heat from a first hot heat transfer medium is absorbed by a second heat transfer medium to be heated, whereby the energy transfer is realized. Tube bundle heat exchangers are very stable and therefore also suitable for use in applications with high pressures, for example in hydrogenation plants in which a pressure of over 300 bar can prevail. The pressure differences occurring in these applications between the heat transfer medium flowing in the housing and the second heat transfer medium flowing in the tubes, so far only allowed the use of Rohrbündelwärmetauschem.

DE 10 2004 004 895 offenbart einen solchen Rohrbündelwärmetauscher entsprechend des Oberbegriffs des Anspruchs 1. Nachteiling an Rohrbündelwärmetauschern ist, dass auf Grund der laminaren Strömung in den Rohren und der relativ großen Wandstärke der Rohre, diese kann 2 bis 3 mm betragen, nur geringe Wärmedurchgangskoeffizienten und somit ein niedriger Wirkungsgrad der Rohrbündelwärmetauscher erreicht werden kann. Daher werden große Wärmeaustauschflächen benötigt, wodurch die Rohrbündelwärmetauscher relativ groß und schwer und somit auch sehr teuer werden. Zudem steigen durch die unvollständige Wärmeübertragung von dem heißen Wärmeträgermedium auf das aufzuheizende Wärmeträgermedium die Energiekosten der Anlagen an. DE 10 2004 004 895 Disadvantage of tube bundle heat exchangers is that due to the laminar flow in the tubes and the relatively large wall thickness of the tubes, this can be 2 to 3 mm, only low heat transfer coefficients and thus a low efficiency of Tube bundle heat exchanger can be achieved. Therefore, large heat exchange surfaces are needed, whereby the shell and tube heat exchangers are relatively large and heavy and thus also very expensive. In addition, due to incomplete heat transfer from the hot heat transfer medium to the heat transfer medium to be heated, the energy costs of the plants increase.

Es ist daher die Aufgabe der vorliegenden Erfindung, bestehende Rohrbündelwärmetauscher so umzurüsten, dass die obigen Nachteile vermieden und eine verbesserte Wärmeübertragung und große Wärmeaustauschflächen bei niedrigen Kosten ermöglicht werden, wobei diese ungerüsteten Wärmetauscher auch im Hochdruckbereich, d. h. bei Drücken über 300 bar, einsetzbar sein sollen.It is therefore the object of the present invention to convert existing shell and tube heat exchangers so that the above disadvantages are avoided and improved heat transfer and large heat exchange surfaces at low cost are possible, these unequipped heat exchangers in the high pressure area, d. H. at pressures above 300 bar, should be used.

Hierzu ist erfindungsgemäß vorgesehen, dass der Umrüstsatz mindestens eine Plattenwärmetauschereinheit zum Ersatz der Rohrbündeleinheit aufweist, welche zumindest die folgenden Bauteile umfasst:

  • ein Plattenpaket mit mindestens zwei Wärmetauscherplatten, die je mindestens ein Durchgangsloch aufweisen und die paarweise entlang ihres Umfangs oder entlang des Umfangs der Durchgangslöcher miteinander verschweißt sind,
  • zwei Halteplatten mit je mindestens einem Durchgangsloch, wobei jeweils eine der Halteplatten an jedem Ende des Plattenpakets angeordnet und mit der jeweils äußersten Wärmetauscherplatte des Plattenpakets verbunden ist, und
  • mindestens ein Zugmittel, das sich in Längsrichtung zwischen den Halteplatten erstreckt und mit beiden Halteplatten verbunden ist, so dass die beiden Halteplatten und das Zugmittel einen Käfig um das Plattenpaket ausbilden, der die im Betriebszustand der Plattenwärmetauschereinheit im Plattenpaket auftretenden Kräfte aufnimmt, wobei der Außendurchmesser der Plattenwärmetauschereinheit an den Innendurchmesser des zylindrischen Gehäuses des Rohrbündelwärmetauschers angepasst ist und das Zugmittel als Fließrichtungsgeberblech ausgebildet ist, das sich um mindestens einen Teil des Umfangs des Plattenpakets erstreckt.
For this purpose, the invention provides that the conversion kit has at least one plate heat exchanger unit for replacing the tube bundle unit, which comprises at least the following components:
  • a plate pack having at least two heat exchanger plates each having at least one through-hole and which are welded together in pairs along their circumference or along the circumference of the through-holes,
  • two holding plates each having at least one through hole, wherein each one of the holding plates is arranged at each end of the plate pack and connected to the respective outermost heat exchanger plate of the plate pack, and
  • at least one traction means, which extends in the longitudinal direction between the holding plates and is connected to two holding plates, so that the two holding plates and the traction means form a cage around the plate pack, which absorbs the forces occurring in the operating state of the plate heat exchanger unit in the plate pack, the outer diameter of the Plate heat exchanger unit is adapted to the inner diameter of the cylindrical housing of the tube bundle heat exchanger and the traction means is formed as a flow direction sensor plate, which extends around at least part of the circumference of the plate package.

Die Plattenwärmetauscheinheit kann durch die Käfigkonstruktion aus den beiden Halteplatten und dem zwischen diesen angeordneten Zugmittel, das als Fließrichtungsgeberblech ausgebildet ist, die im Betrieb des Wärmetauschers wirkenden Kräfte aufnehmen. Dadurch wird ein Auseinanderdrücken der Wärmetauscherplatten des Plattenpakets bei Druckbeaufschlagung vermieden. Daher kann die Plattenwärmetauschereinheit als solche in bereits bestehende Rohrbündelwärmetauschergehäuse eingesetzt werden und die üblichen Rohrbündel ersetzen. Der Druckmantel von konventionellen Plattenwärmetauscher, der üblicherweise die auftretenden Kräfte aufnimmt, wird somit nicht mehr benötigt. Dadurch ist ein einfacher Einbau der Plattenwärmetauschereinheit in das bestehende Gehäuse des Rohrbündelwärmetauschers möglich. Der geänderte Rohrbündelwärmetauscher ermöglicht somit einen verbesserten Wärmeübergang, da mit Hilfe der Wärmetauscherplatten eine größere Austauschfläche erzielt wird und auf Grund der geringeren Wandstärke der Wärmetauscherplatten, diese beträgt üblicherweise 0,6 bis 1 mm, eine verbesserte Wärmeübertragung möglich ist. Dadurch ist auch eine Einsparung bei den Energiekosten der Anlage möglich. Mit Hilfe der Plattenwärmetauschereinheit ist ferner eine Variierung der Wärmeübertragungsfläche des bestehenden Wärmetauschers möglich, indem der Durchmesser der eingesetzten Wärmetauscherplatten und die Anzahl der eingesetzten Wärmetauscherplatten entsprechend ausgewählt werden. Dadurch ist eine Vergrößerung, eine Verkleinerung oder ein Gleichbleiben der Wärmeübertragungsfläche im Vergleich zum ursprünglich vorhandenen Rohrtaündelwärmetauscher möglich.The plate heat exchange unit can absorb the forces acting during operation of the heat exchanger by the cage construction of the two holding plates and the traction means arranged between them, which is designed as a flow direction sensor plate. As a result, a pressing apart of the heat exchanger plates of the plate pack is avoided when pressurized. Therefore, the plate heat exchanger unit can be used as such in existing shell and tube heat exchanger housing replace the usual tube bundles. The pressure jacket of conventional plate heat exchanger, which usually absorbs the forces occurring, is therefore no longer needed. As a result, a simple installation of the plate heat exchanger unit in the existing housing of the tube bundle heat exchanger is possible. The modified tube bundle heat exchanger thus allows improved heat transfer, since with the help of the heat exchanger plates, a larger exchange surface is achieved and due to the smaller wall thickness of the heat exchanger plates, this is usually 0.6 to 1 mm, improved heat transfer is possible. This also makes it possible to save on the energy costs of the system. With the aid of the plate heat exchanger unit, a variation of the heat transfer surface of the existing heat exchanger is further possible by the diameter of the heat exchanger plates used and the number of heat exchanger plates used are selected accordingly. As a result, enlargement, reduction or uniformity of the heat transfer surface in comparison to the original existing Rohrtaündelwärmetauscher is possible.

Durch die spezielle Ausbildung der Zugmittel als Fließrichtungsgeberblech weisen die Zugmittel eine Doppelfunktion auf. Zum Einen nehmen sie, wie oben beschrieben, im Betrieb des Wärmetauschers auftretende Kräfte auf, zum Anderen verhindern sie das Auftreten von By-Pass-Strömungen im Gehäuse des Rohrbündelwärmetauschers. Somit weist die Plattenwärmetauschereinheit nur wenige Bauteile auf und kann relativ einfach hergestellt werden.Due to the special design of the traction means as flow direction sensor plate, the traction means have a dual function. On the one hand, they take on, as described above, occurring during operation of the heat exchanger forces, on the other hand, they prevent the occurrence of by-pass flows in the housing of the tube bundle heat exchanger. Thus, the plate heat exchanger unit has only a few components and can be manufactured relatively easily.

Zwar ist aus der DE 10 2004 004 895 B3 bereits ein Plattenwärmetauscher bekannt, der auch für Hochdruckanwendungen geeignet ist. Allerdings ist in dieser Druckschrift nicht definiert, was unter Hochdruck zu verstehen ist. Dieser Plattenwärmetauscher umfasst ein Plattenpaket, das in ein druckstabiles Gehäuse eingesetzt ist, wobei das Plattenpaket und das Gehäuse aneinander angepasst sind. Das Plattenpaket weist miteinander verbundene Wärmetauscherplatten auf und ist beiderseits durch Paketspannplatten begrenzt. Das Plattenpaket wird durch mindestens vier Spannbolzen verspannt, die sich zwischen den Paketspannplatten erstrecken und mit diesen verschweißt sind. An zwei Seiten des Plattenpakets sind Seitenbleche angebracht, die an dem Umfang des Plattenpakets anliegen und an ihren Enden U-förmige Abwinklungen aufweisen, die sich dichtend gegen den Innendurchmesser des Gehäuses abstützen, so dass das mantelseitige Wärmeträgermedium nicht seitlich zwischen Gehäuse und Plattenpaket vorbeiströmen kann, sondern zwischen den Wärmetauscherplatten hindurchströmen muss. Um das Einführen des Plattenpakets in das Gehäuse zu ermöglichen, dürfen die Seitenbleche nicht zu dick ausgebildet sein, so dass die Abwinklungen nachgeben können. Ist das Plattenpaket in das Gehäuse eingesetzt, so sind die Abwinklungen zwischen dem Plattenpaket und dem Gehäuse verspannt und dichten ab. Auf Grund der geringen Dicke können die Seitenbleche keine Kräfte aufnehmen, sondern haben lediglich eine Strömungsleit- und Dichtfunktion. Wie bereits angegeben, ist die Höhe des Betriebsdruckes nicht definiert. Es ist aber davon auszugehen, dass sich die Seitenbleche bei Hochdruckanwendungen mit einem Druck von über 250 bar, wie das beispielsweise in Hydrieranlagen der Fall ist, verformen und auch die Strömungsleitaufgaben nicht mehr erfüllen können.Although is out of the DE 10 2004 004 895 B3 already known a plate heat exchanger, which is also suitable for high pressure applications. However, this document does not define what is meant by high pressure. This plate heat exchanger comprises a plate pack, which is inserted in a pressure-stable housing, wherein the plate pack and the housing are adapted to each other. The plate pack has interconnected heat exchanger plates and is bounded on both sides by package clamping plates. The plate pack is braced by at least four clamping bolts, which extend between the package clamping plates and are welded to them. On two sides of the plate pack side plates are mounted, which bear against the circumference of the plate pack and at their ends have U-shaped angled portions which are sealingly supported against the inner diameter of the housing, so that the shell-side heat transfer medium can not flow laterally between the housing and plate pack, but must flow between the heat exchanger plates. In order to allow the insertion of the plate pack in the housing, the side plates must not be made too thick, so that the bends can yield. If the plate pack is inserted into the housing, the bends between the plate pack and the housing are braced and sealed. Due to the small thickness, the side plates can absorb no forces, but have only a flow and sealing function. As already stated, the height of the operating pressure is not defined. However, it can be assumed that the side plates in high-pressure applications with a pressure of over 250 bar, as is the case for example in hydrogenation plants, deform and can no longer fulfill the Strömungsleitaufgaben.

In einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass die Halteplatten im Wesentlichen kreisförmig sind und an ihrem Rand jeweils eine Aussparung zur Strömungslenkung eines durch das Gehäuse des Rohrbündelwärmetauschers fließenden, also eines gehäuseseitigen Wärmeträgermediums aufweisen. Durch die Aussparung in den Halteplatten wird die Strömung des gehäuseseitigen Wärmeträgermediums in die gewünschte Richtung gelenkt. Ist der Wärmetauscher einpässig ausgeführt, so sind die Aussparungen der beiden Halteplatten einer Plattenwärmetauschereinheit auf gegenüberliegenden Seiten des Plattenpakets angeordnet, so dass das gehäuseseitige Wärmeträgermedium auf der einen Seite neben den Wärmetauscherplatten einströmt, durch das Plattenpaket hindurchfließen muss und auf der gegenüberliegenden Seite wieder ausströmt. Es ist aber auch eine andere Strömungsführung möglich, insbesondere ist eine mehrpässige Strömungsführung denkbar.In a preferred embodiment of the invention it is provided that the holding plates are substantially circular and each have at its edge a recess for the flow guidance of a flowing through the housing of the tube bundle heat exchanger, ie a housing-side heat transfer medium. Through the recess in the retaining plates, the flow of the housing-side heat transfer medium steered in the desired direction. If the heat exchanger is designed to be suitable, then the recesses of the two holding plates of a plate heat exchanger unit are arranged on opposite sides of the plate pack, so that the housing-side heat transfer medium flows in on one side next to the heat exchanger plates, must flow through the plate pack and flows out again on the opposite side. But it is also possible a different flow guidance, in particular a multi-flow control is conceivable.

Bevorzugterweise kann vorgesehen werden, dass die Aussparung am Rand der Halteplatten ringsegmentförmig ist. Dadurch wird eine sehr einfache Ausführung der Halteplatten ermöglicht.Preferably, it can be provided that the recess at the edge of the retaining plates is ring-segment-shaped. This allows a very simple design of the holding plates.

In einer besonders bevorzugten Ausführungsform kann vorgesehen werden, dass die ringsegmentförmige Aussparung in jeder Halteplatte einen Winkel von ca. 90° überstreckt. Damit wird ein Öffnungswinkel von 90°, durch den das mantel- bzw. gehäuseseitige Wärmeträgermedium in das Plattenpaket einströmt, erhalten, der für sehr viele Anwendungen gut geeignet ist.In a particularly preferred embodiment it can be provided that the ring-segment-shaped recess in each holding plate an angle of about 90 °. This results in an opening angle of 90 °, through which the jacket or housing-side heat transfer medium flows into the plate pack, which is well suited for many applications.

In einer weiteren Variante kann vorgesehen werden, dass der Außendurchmesser der Halteplatten größer ist als der Außendurchmesser der Wärmetauscherplatten des Plattenpakets und in etwa dem Innendurchmesser des Gehäuses des Rohrbündelwärmetauschers entspricht. Somit liegen die Halteplatten mit dem Großteil ihres Umfangs an der Gehäuseinnenseite an. Zwischen den Aussparungen der Halteplatten und der Gehäuseinnenseite wird ein Strömungsweg für das gehäuseseitige Wärmeträgermedium gebildet. Da der Durchmesser der Halteplatten in etwa dem Innendurchmesser des Gehäuses entspricht, kann die Wärmetauscherplatteneinheit einfach in das bereits vorhandene Gehäuse eingeführt werden. Es ist eine gute Zentrierung der Plattenwärmetauschereinheit in dem Gehäuse möglich. Zudem wird zwischen den Halteplatten und dem Gehäuse eine Dichtwirkung erzielt, so dass das gehäuseseitige Wärmeträgermedium hauptsächlich durch die Aussparungen der Halteplatten strömt und somit die gewünschte Strömungsführung erzielt wird.In a further variant it can be provided that the outer diameter of the holding plates is greater than the outer diameter of the heat exchanger plates of the plate package and corresponds approximately to the inner diameter of the housing of the tube bundle heat exchanger. Thus, the holding plates bear against the inside of the housing with the major part of their circumference. Between the recesses of the holding plates and the inside of the housing, a flow path for the housing-side heat transfer medium is formed. Since the diameter of the holding plates approximately corresponds to the inner diameter of the housing, the heat exchanger plate unit can be easily inserted into the existing housing. It is a good centering of the plate heat exchanger unit in the housing possible. In addition, a sealing effect is achieved between the holding plates and the housing, so that the housing-side heat transfer medium flows mainly through the recesses of the holding plates and thus the desired flow guidance is achieved.

In noch einer weiteren Ausführungsform kann vorgesehen werden, dass die Mittelachse des mindestens einen Durchgangslochs in jeder Halteplatte schräg verläuft und mit der Mittelachse der entsprechenden Halteplatte einen Winkel einschließt, so dass die Öffnung des Durchgangsloches auf der Innenseite der Halteplatte näher am Rand der Halteplatte angeordnet ist als die Öffnung des Durchgangslochs auf der Außenseite der Halteplatte. Dadurch wird erreicht, dass an der Außenseite jeder Halteplatte mehr Platz für die Verbindung mit einer anderen Platteneinheit oder mit den bereits vorhanden Anschlüssen für den Rohrbündelwärmetauscher vorhanden ist.In yet another embodiment, it can be provided that the center axis of the at least one through hole in each holding plate is inclined and forms an angle with the center axis of the corresponding holding plate, so that the opening of the through hole on the inside of the holding plate is arranged closer to the edge of the holding plate as the opening of the through hole on the outside of the holding plate. It is thereby achieved that there is more space on the outside of each retaining plate for connection to another plate unit or to the already existing connections for the tube bundle heat exchanger.

Ferner kann vorgesehen werden, dass eine Innenseite des mindestens einen Fließrichtungsgeberblechs an dem Außendurchmesser des Plattenpakets anliegt und eine Außenseite des mindestens einen Fließrichtungsgeberblechs mit dem Außendurchmesser der Halteplatten abschließt. Das mindestens eine Fließrichtungsgeberblech ist also so ausgebildet, dass es den Platz zwischen den Plattenpaket und der Innenseite des Gehäuses ausfüllt, so dass es eine By-Pass-Strömung seitlich an den Plattenpaket vorbei blockiert. Zudem stützt sich das mindestens eine Fließrichtungsgeberblech ebenfalls an der Innenseite des Gehäuses ab, wodurch eine bessere Positionierung der Plattenwärmetauschereinheit in dem Gehäuse ermöglicht wird.Furthermore, it can be provided that an inner side of the at least one flow direction sensor plate bears against the outer diameter of the plate package and terminates an outer side of the at least one flow direction sensor plate with the outer diameter of the holding plates. The at least one flow direction sensor plate is thus formed so that it fills the space between the plate pack and the inside of the housing so that it blocks a by-pass flow laterally past the plate pack. In addition, the at least one flow direction sensor plate also supported on the inside of the housing, whereby a better positioning of the plate heat exchanger unit is made possible in the housing.

In einer besonders bevorzugten Ausführungsform ist vorgesehen, dass das Fließrichtungsgeberblech eine Dicke von mindestens 5 mm aufweist. Dadurch wird sichergestellt, dass das Fließrichtungsgeberblech die gewünschte Festigkeit aufweist, um die auftretenden Zugkräfte aufzunehmen, die bei einem Hockdruckeinsatz mit einem Druck von mindestens 300 bar, beispielsweise in Hydrieranlagen, auftreten.In a particularly preferred embodiment it is provided that the flow direction sensor plate has a thickness of at least 5 mm. This ensures that the flow direction sensor plate has the desired strength to absorb the tensile forces that occur at a high pressure application with a pressure of at least 300 bar, for example in hydrogenation.

Um eine stabilere Ausbildung der Käfigkonstruktion zu ermöglichen, kann vorgesehen werden, dass mindestens ein weiteres Fließrichtungsgeberblech vorgesehen ist, wobei die beiden Fließrichtungsgeberbleche auf gegenüberliegenden Seiten des Plattenpakets angeordnet sind. Dadurch werden zwei Strömungskanäle für das gehäuseseitige Wärmeträgermedium ausgebildet, ein Zuführkanal und ein Abführkanal.In order to enable a more stable design of the cage construction, it can be provided that at least one further flow direction sensor plate is provided, wherein the two flow direction sensor plates are arranged on opposite sides of the plate package. As a result, two flow channels for the housing-side heat transfer medium are formed, a feed channel and a discharge channel.

In einer weiteren Variante kann vorgesehen werden, dass an dem Durchgangsloch jeder Halteplatte ein erster Flansch angeordnet ist und an jeder Halteplatte ein weiterer Flansch vorgesehen ist. Durch die Flasche ist eine sehr einfache Verbindung der Plattenwärmetauschereinheit mit bestehenden Anschlüssen des Rohrbündelwärmetauschers zur Zuführung und Abführung von Wärmeträgermedien möglich. Zudem können dadurch mehrere Plattenwärmetauscheinheiten miteinander verbunden werden. Die Flanschverbindungen sind leicht lösbar, so dass Reparaturen oder Wartungen der Plattenwärmetauschereinheit leicht möglich sind oder die Plattenwärmetauschereinheit leicht ausgetauscht werden kann.In a further variant it can be provided that a first flange is arranged on the through hole of each holding plate and a further flange is provided on each holding plate. Through the bottle, a very simple connection of the plate heat exchanger unit with existing connections of the tube bundle heat exchanger for the supply and removal of heat transfer media is possible. In addition, several plate heat exchange units can be connected to each other. The flange connections are easily detachable, so that repairs or maintenance of the plate heat exchange unit are easily possible or the plate heat exchange unit can be easily exchanged.

Es kann aber auch vorgesehen werden, dass an dem Durchgangsloch jeder Halteplatte ein erstes Rohrschweißende angeordnet ist und an jeder Halteplatte ein weiteres Rohrschweißende vorgesehen ist. Die Rohrschweißenden können dann mit bestehenden Anschlüssen des Rohrbündelwärmetauschers zur Zuführung und Abführung von Wärmeträgermedien verbunden werden, indem eine Schweißverbindung angebracht wird. Dadurch ist eine sichere Verbindung möglich, es müssen keine Dichtungen, wie beispielsweise bei einer Flanschverbindung, eingesetzt werden.However, it can also be provided that a first tube welding end is arranged on the through hole of each holding plate and a further tube welding end is provided on each holding plate. The tube welding ends can then be connected to existing connections of the tube bundle heat exchanger for the supply and removal of heat transfer media by a welded joint is attached. As a result, a secure connection is possible, there must be no seals, such as in a flange, are used.

Zweckmäßigerweise kann vorgesehen werden, dass an der Innenseite jeder Halteplatte eine Unterstützungsplatte angeordnet ist und jede Halteplatte mittels der Unterstützungsplatte mit der jeweils äußersten Wärmetauscherplatte des Plattenpakets verbunden ist. Hierdurch wird die Fertigung des Plattenpakets erleichtert und eine bessere Verbindung zwischen der relativ dicken Halteplatte und der sehr dünnen Wärmetauscherplatte ermöglicht.Appropriately, it can be provided that on the inside of each support plate, a support plate is arranged and each support plate is connected by means of the support plate with the outermost heat exchanger plate of the plate package. As a result, the production of the plate package is facilitated and allows a better connection between the relatively thick plate and the very thin heat exchanger plate.

In noch einer weiteren Variante kann vorgesehen werden, dass der Umrüstsatz mindestens zwei Plattenwärmetauschereinheiten umfasst, die jeweils mittels der Flansche bzw. der Rohrschweißenden miteinander verbunden sind, wobei die Halteplatten und die Flansche bzw. Rohrschweißenden so ausgelegt sind, dass sie das Gewicht der Plattenwärmetauschereinheiten abstützen können. Dadurch können mehrere Plattenwärmetauschereinheiten in das bereits vorhandene Rohrbündelwärmetauschergehäuse eingesetzt werden. Die Plattenwärmetauschereinheiten können dann mit kleineren Wärmeaustauschflächen, d. h. mit einer geringeren Anzahl an Wärmetauscherplatten ausgebildet werden, wodurch die einzelnen Plattenwärmetauschereinheiten eine höhere Stabilität aufweisen. Durch die Verbindung der einzelnen Plattenwärmetauschereinheiten über je zwei Flansche bzw. Rohrschweißenden stützen sich die Plattenwärmetauschereinheiten jeweils an zwei Stellen aufeinander ab, wodurch ein Einknicken und somit ein Verkeilen der Plattenwärmetauschereinheiten in dem Gehäuse vermieden wird. Durch eine entsprechende Anordnung der Halteplatten der einzelnen Plattenwärmetauschereinheiten ist eine gute Strömungsführung des gehäuseseitigen Wärmeträgermediums möglich. Die Wärmeaustauschfläche des bestehenden Wärmetauschers ist durch Hinzufügen oder Entfernen einzelner Plattenwärmetauschereinheiten leicht aufstockbar oder verringerbar.In yet another variant, it can be provided that the conversion kit comprises at least two plate heat exchanger units, which are connected to each other by means of the flanges or tube welding ends, wherein the holding plates and the flanges or pipe welding ends are designed so that they support the weight of the plate heat exchanger units can. As a result, a plurality of plate heat exchanger units can be used in the already existing shell and tube heat exchanger housing. The plate heat exchanger units can then be used with smaller heat exchange surfaces, i. H. be formed with a smaller number of heat exchanger plates, whereby the individual plate heat exchanger units have a higher stability. Through the connection of the individual plate heat exchanger units via two flanges or tube welding ends, the plate heat exchanger units are supported on each other at two points, whereby a buckling and thus wedging the plate heat exchanger units is avoided in the housing. By a corresponding arrangement of the holding plates of the individual plate heat exchanger units, a good flow guidance of the housing-side heat transfer medium is possible. The heat exchange surface of the existing heat exchanger can be easily increased or decreased by adding or removing individual plate heat exchanger units.

In einer besonders bevorzugten Ausführungsform ist vorgesehen, dass das Gehäuse des Rohrbündelwärmetauschers ein Hochdruckgehäuse für einen Druckbereich von bis über 300 bar ist. Dadurch ist der Einsatz des Wärmetauschers in einer Hochdruckanlage mögliche.In a particularly preferred embodiment, it is provided that the housing of the tube bundle heat exchanger is a high-pressure housing for a pressure range of up to over 300 bar. As a result, the use of the heat exchanger in a high pressure system is possible.

Im Folgenden werden Ausführungsformen der Erfindung anhand einer Zeichnung näher erläutert. Es zeigen:

Fig. 1
Seitenansicht einer teilweise geschnittenen Plattenwärmetauschereinheit,
Fig. 2
Schnitt durch die Plattenwärmetauschereinheit aus Fig. 1 entlang Linie II-II,
Fig. 3
Draufsicht auf eine Halteplatte der Plattenwärmetauschereinheit aus Fig. 1,
Fig. 4
Schnitt durch die Halteplatte aus Fig. 3 entlang Linie IV-IV,
Fig. 5
zwei miteinander verbundene Plattenwärmetauschereinheiten und
Fig. 6
Druckmantel eines Rohrbündelwärmetauschers mit darin eingesetzten Plattenwärmetauschereinheiten.
In the following, embodiments of the invention will be explained in more detail with reference to a drawing. Show it:
Fig. 1
Side view of a partially cut plate heat exchanger unit,
Fig. 2
Cut through the plate heat exchanger unit Fig. 1 along line II-II,
Fig. 3
Top view of a holding plate of the plate heat exchanger unit Fig. 1 .
Fig. 4
Cut through the retaining plate Fig. 3 along line IV-IV,
Fig. 5
two interconnected plate heat exchanger units and
Fig. 6
Pressure jacket of a shell-and-tube heat exchanger with plate heat exchanger units inserted therein.

Fig. 1 zeigt eine Seiteneinsicht einer Plattenwärmetauschereinheit 1. Die Plattenwärmetauschereinheit 1 umfasst ein Plattenpaket 2, das zumindest zwei Wärmetauscherplatten 3 aufweist. Im vorliegenden Fall umfasst das Plattenpaket 2 eine Vielzahl von Wärmetauscherplatten 3. Jede Wärmetauscherplatte 3 weist mindestens ein Durchgangsloch 4, vorzugsweise zwei Durchgangslöcher 4, auf. Dieses ist beispielsweise in Fig. 2 zu sehen. Jeweils zwei Wärmetauscherplatten 3 sind entlang ihrer Durchgangslöcher 4 miteinander verbunden, vorzugsweise verschweißt. Die so entstandenen Plattenpaare sind entlang des Umfangs der Wärmetauscherplatten 3 miteinander verschweißt, so dass das Plattenpaket 2 entsteht. Die Dicke der Wärmetauscherplatten 3 beträgt etwa 0,6 bis ca. 1 mm. Es ist aber auch denkbar, dickere oder dünnere Wärmetauscherplatten einzusetzen. Fig. 1 shows a side view of a plate heat exchanger unit 1. The plate heat exchanger unit 1 comprises a plate package 2, which has at least two heat exchanger plates 3. In the present case, the plate pack 2 comprises a multiplicity of heat exchanger plates 3. Each heat exchanger plate 3 has at least one through-hole 4, preferably two through-holes 4. This is for example in Fig. 2 to see. Two heat exchanger plates 3 are connected to each other along their through holes 4, preferably welded. The resulting plate pairs are welded together along the circumference of the heat exchanger plates 3, so that the plate package 2 is formed. The thickness of the heat exchanger plates 3 is about 0.6 to about 1 mm. But it is also conceivable to use thicker or thinner heat exchanger plates.

An beiden Enden des Plattenpakets 2 ist die jeweils äußere Wärmetauscherplatte 3 mit einer Unterstützungsplatte 5 verbunden, vorzugsweise verschweißt. Die Wärmetauscherplatten 3 sind vorzugsweise kreisförmig, die Unterstützungsplatten 5 sind ringförmig und weisen den gleichen Außendurchmesser auf wie die Wärmetauscherplatten 3. Die Unterstützungsplatten 5 sind dicker als die Wärmetauscherplatten 3.At both ends of the plate pack 2, the respective outer heat exchanger plate 3 is connected to a support plate 5, preferably welded. The heat exchanger plates 3 are preferably circular, the support plates 5 are annular and have the same outer diameter as the heat exchanger plates 3. The support plates 5 are thicker than the heat exchanger plates 3rd

Die Unterstützungsplatten 5 sind wiederum mit Halteplatten 6 verbunden. Auch die Verbindung zwischen den Unterstützungsplatten 5 und den Halteplatten 6 ist vorzugsweise eine Schweißverbindung.The support plates 5 are in turn connected to retaining plates 6. Also, the connection between the support plates 5 and the holding plates 6 is preferably a welded connection.

Die Halteplatten 6 weisen eine größere Dicke auf als die Unterstützungsplatten 5 und somit eine erheblich größere Dicke als die Wärmetauscherplatten 3. Da die Dicke der Unterstützungsplatten 5 zwischen der Dicke der Halteplatten 6 und der Dicke der Wärmetauscherplatten 3 liegt, sind jeweils gute Schweißverbindungen zwischen den Wärmetauscherplatten 3 und den Unterstützungsplatten 5 sowie zwischen den Unterstützungsplatten 5 und den Halteplatten 6 möglich.Since the thickness of the support plates 5 is between the thickness of the support plates 6 and the thickness of the heat exchanger plates 3, there are good welds between the heat exchanger plates, respectively 3 and the support plates 5 and between the support plates 5 and the holding plates 6 possible.

Jede der Halteplatten 6 weist mindestens ein Durchgangsloch 7 auf. Wie bereits beschrieben, sind die Wärmetauscherplatten 3 paarweise entlang ihrer Durchgangslöcher 4 miteinander verschweißt. Die Durchgangslöcher 7 der Halteplatten 6 stehen mit dem Durchgangsloch 4 der benachbart zu den Halteplatten 6 angeordneten Wärmetauscherplatten 3 in Verbindung, so dass durch diese Durchgangslöcher 4 und 7 ein Durchgangskanal für ein durch das Plattenpaket 2 strömendes, also ein plattenseitiges, Wärmeträgermedium ausgebildet wird.Each of the holding plates 6 has at least one through hole 7. As already described, the heat exchanger plates 3 are welded together in pairs along their through holes 4. The through-holes 7 of the holding plates 6 communicate with the through-hole 4 of the heat exchanger plates 3 arranged adjacent to the holding plates 6, so that through these through-holes 4 and 7 a through-channel is formed for a heat transfer medium flowing through the plate pack 2, ie a plate-side.

Wie aus Fig. 1 ersichtlich, verläuft die Mittelachse 8 jedes Durchgangsloch 7 jeder Halteplatte 6 schräg und schließt mit der Mittelachse 9 der Plattenwärmetauschereinheit 1 und somit auch mit der Mittelachse der entsprechenden Halteplatte 6 einen Winkel ein. Somit sind die Öffnungen der Durchgangslöcher 7 auf der Innenseite jeder Halteplatte 6, also der Seite der Halteplatte 6, die dem Plattenpaket 2 zugewandt ist, weiter am Rand der Halteplatte 6 angeordnet als die Öffnungen der Durchgangslöcher 7 der Halteplatte 6, die auf der Außenseite der Halteplatte 6 ausgebildet sind.How out Fig. 1 As can be seen, the central axis 8 of each through-hole 7 of each holding plate 6 runs obliquely and forms an angle with the center axis 9 of the plate heat exchanger unit 1 and thus also with the center axis of the corresponding holding plate 6. Thus, the openings of the through holes 7 on the inside of each holding plate 6, so the side of the holding plate 6, which faces the plate pack 2, further arranged on the edge of the holding plate 6 as the openings of the through holes 7 of the holding plate 6, which on the outside of the Holding plate 6 are formed.

Wie beispielsweise aus Fig. 1 ersichtlich, sind die Durchgangslöcher 7 der beiden Halteplatten 6 einer Plattenwärmetauschereinheit 1 auf gegenüberliegenden Seiten des Plattenpakets 2 angeordnet, so dass die Strömung des plattenseitigen Wärmeträgermediums in dem Plattenpaket 2 umgelenkt wird. Um einen guten Wärmeübergang zwischen dem plattenseitigen Wärmeträgermedium und einem gehäuseseitigen Wärmeträgermedium zu erreichen, weisen die Wärmetauscherplatten 3 vorzugsweise Prägungen auf. Durch diese Prägungen wird eine turbulente Strömung der Wärmeträgermedien erzeugt, die den Wärmeübergang verbessert.Like, for example Fig. 1 As can be seen, the through-holes 7 of the two holding plates 6 of a plate heat exchanger unit 1 are arranged on opposite sides of the plate pack 2, so that the flow of the plate-side heat transfer medium in the plate pack 2 is deflected. In order to achieve a good heat transfer between the plate-side heat transfer medium and a housing-side heat transfer medium, the heat exchanger plates 3 preferably embossments. By means of these embossings, a turbulent flow of the heat transfer media is generated, which improves the heat transfer.

An den Durchgangslöchern 7 der Halteplatten 6 sind erste Flansche 10 angebracht. Vorzugsweise sind die ersten Flansche 10 mit den Halteplatten 6 verschweißt. An jeder Halteplatte 6 ist ferner ein zweiter Flansch 11 angebracht, der symmetrisch zu dem ersten, mit dem Durchgangsloch 7 der Halteplatte 6 verbundenen Flansch 10 angeordnet ist. Die Flansche 10, 11 sind an der Außenseite der Halteplatten 6 angeordnet. Der Außendurchmesser der Halteplatten 6 ist größer als der Außendurchmesser der Wärmetauscherplatten 3 und der Außendurchmesser der Unterstützungsplatten 5. Vorzugsweise entspricht der Außendurchmesser der Halteplatten 6 in etwa dem Innendurchmesser des Gehäuses des Rohrbündelwärmetauschers oder ist etwas kleiner als der Innendurchmesser des Gehäuses des Rohrbündelwärmetauschers, in den die Plattenwärmetauschereinheit 1 eingesetzt wird. Die Halteplatten 6 sind im Wesentlichen kreisförmig, weisen aber an einer Stelle ihres Umfangs am Rand eine Aussparung 13 auf. In Fig. 1 ist die Aussparung 13 der linken Halteplatte 6 an der Oberseite der Plattenwärmetauschereinheit angeordnet, die rechte Halteplatte 6 ist so angeordnet, dass ihre Aussparung 13 nach unten weist.At the through holes 7 of the holding plates 6 first flanges 10 are attached. Preferably, the first flanges 10 are welded to the holding plates 6. On each holding plate 6, a second flange 11 is further attached, which is arranged symmetrically to the first, connected to the through hole 7 of the holding plate 6 flange 10. The flanges 10, 11 are arranged on the outside of the holding plates 6. The outer diameter of the holding plates 6 is larger than the outer diameter of the heat exchanger plates 3 and the outer diameter of the support plates 5. Preferably, the outer diameter of the holding plates 6 is approximately equal to the inner diameter of the housing of the tube bundle heat exchanger or is slightly smaller than the inner diameter of the housing of the tube bundle heat exchanger, in which Plate heat exchanger unit 1 is used. The holding plates 6 are substantially circular, but at one point of their circumference have a recess 13 at the edge. In Fig. 1 is the recess 13 of the left holding plate 6 disposed at the top of the plate heat exchanger unit, the right holding plate 6 is arranged so that its recess 13 faces downward.

Zwischen den beiden Halteplatten 6 erstreckt sich mindestens ein Fließrichtungsgeberblech 12. Das Fließrichtungsgeberblech 12 ist mit beiden Halteplatten 6 verbunden, vorzugsweise verschweißt. Somit bilden das mindestens eine Fließrichtungsgeberblech 12 und die beiden Halteplatten 6 eine Käfigkonstruktion für das Plattenpaket 2 aus. Das Fließrichtungsgeberblech 12 ist als Zugmittel ausgebildet, so dass das Fließrichtungsgeberblech 12 Zugkräfte aufnehmen und auf die Halteplatten 6 übertragen kann. Im Betrieb der Plattenwärmetauschereinheit 1 fließt ein erstes Wärmeträgermedium durch das Plattenpaket 2. Dadurch wird Druck auf die Wärmetauscherplatten 3 ausgeübt, der diese auseinanderdrückt. Die dabei entstehenden Kräfte werden durch das Fließrichtungsgeberblech 12 und die Halteplatten 6 aufgenommen, so dass die Plattenwärmetauschereinheit 1 auch unter Druck betrieben werden kann, ohne dass dazu ein separates, druckbeständiges Wärmetauschergehäuse benötigt wird.At least one flow direction sensor plate 12 extends between the two holding plates 6. The flow direction transmitter plate 12 is connected to two holding plates 6, preferably welded. Thus, the at least one flow direction sensor plate 12 and the two holding plates 6 form a cage construction for the plate pack 2. The flow direction sensor plate 12 is designed as a traction means, so that the flow direction sensor plate 12 can absorb tensile forces and transmitted to the holding plates 6. During operation of the plate heat exchanger unit 1, a first heat transfer medium flows through the plate pack 2. As a result, pressure is exerted on the heat exchanger plates 3, which presses them apart. The resulting forces are absorbed by the flow direction sensor plate 12 and the holding plates 6, so that the plate heat exchanger unit 1 can also be operated under pressure, without the need for a separate, pressure-resistant heat exchanger housing is required.

Fig. 2 zeigt einen Schnitt durch die Plattenwärmetauschereinheit 1 aus Fig. 1 entlang der Linien II-II. Wie dargestellt, weist jede Wärmetauscherplatte 3 mindestens ein Durchgangsloch 4, vorzugsweise zwei Durchgangslöcher 4, auf. Die Wärmetauscherplatten 3 sind paarweise entlang der Durchgangslöcher 4 miteinander verbunden, vorzugsweise verschweißt, so dass ein erster Strömungskanal im Inneren des Plattenpakets 2 entsteht. Wie in Fig. 2 dargestellt, weist die Plattenwärmetauschereinheit 1 zwei Fließrichtungsgeberbleche 12 auf, die symmetrisch zueinander an zwei Seiten des Plattenpakets 2 angeordnet sind. Jedes Fließrichtungsgeberblech 12 erstreckt sich um einen Teil des Umfangs des Plattenpakets 2, wobei die Innenseite der Fließrichtungsgeberbleche 12 auf dem Außendurchmesser des Plattenpakets 2 aufliegt und die Außenseite vorzugsweise mit dem Außendurchmesser der Halteplatte 6 abschließt. So kann das gehäuseseitige Wärmeträgermedium in dem Bereich, in dem die Fließrichtungsgeberbleche 12 angeordnet sind, nicht seitlich an dem Plattenpaket 2 vorbeiströmen. Die Fließrichtungsgeberbleche 12 sind so mit den beiden Halteplatten 6 verbunden, dass die Aussparungen 13 in den Halteplatten 6 dort angeordnet sind, wo sich keine Fließrichtungsgeberbleche 12 befinden. Fig. 2 shows a section through the plate heat exchanger unit 1 from Fig. 1 along the lines II-II. As illustrated, each heat exchanger plate 3 has at least one through-hole 4, preferably two through-holes 4. The heat exchanger plates 3 are connected in pairs along the through holes 4, preferably welded, so that a first flow channel is formed in the interior of the plate package 2. As in Fig. 2 1, the plate heat exchanger unit 1 has two flow direction sensor plates 12 which are symmetrical to each other on two sides of the plate package 2 are arranged. Each flow direction transducer plate 12 extends around a portion of the circumference of the plate pack 2, wherein the inside of the flow direction transducer plates 12 rests on the outer diameter of the plate pack 2 and the outer side preferably closes with the outer diameter of the holding plate 6. Thus, the housing-side heat transfer medium in the area in which the flow direction sensor plates 12 are arranged, not laterally flow past the plate pack 2. The flow direction sensor plates 12 are connected to the two holding plates 6, that the recesses 13 are arranged in the holding plates 6 where there are no flow direction sensor plates 12.

In Fig. 3 ist eine Draufsicht auf eine Halteplatte 6 dargestellt. Wie bereits beschrieben, ist jede Halteplatte 6 im Wesentlichen kreisförmig, wobei der Außendurchmesser jeder Halteplatte 6 an den Innendurchmesser des Gehäuses des Rohbündelwärmetauschers angepasst ist, in den die Plattenwärmetauschereinheit 1 eingesetzt werden soll. An ihrem Rand weist jede Halteplatte 6 eine Aussparung 13 auf. Diese Aussparung 13 ist im Wesentlichen ringsegmentförmig. Es wäre aber auch denkbar, die Aussparung 13 anders auszubilden. Vorzugsweise erstreckt sich die ringsegmentförmige Aussparung 13 über einen Winkel von 90°. Es ist auch möglich, dass die Aussparung 13 einen kleineren Winkel oder einen größeren Winkel überstreckt.In Fig. 3 is a plan view of a holding plate 6 is shown. As already described, each holding plate 6 is substantially circular, wherein the outer diameter of each holding plate 6 is adapted to the inner diameter of the housing of the Rohbündelwärmetauschers, in which the plate heat exchanger unit 1 is to be used. At its edge, each retaining plate 6 has a recess 13. This recess 13 is substantially ring segment-shaped. But it would also be possible to form the recess 13 differently. Preferably, the ring-segment-shaped recess 13 extends over an angle of 90 °. It is also possible that the recess 13 extends over a smaller angle or a larger angle.

Jede Halteplatte 6 weist ferner je ein Durchgangsloch 7 mit einer schrägen Mittelachse auf, wobei die Öffnung des Durchgangslochs 7 auf der Innenseite der Halteplatte 6 näher am Rand der Halteplatte 6 liegt als die Öffnung des Durchgangslochs 7 auf der Außenseite der Halteplatte 6. Innenseite bezeichnet hier die Seite jeder Halteplatte 6, die dem Plattenpaket 3 zugewandt ist, die Außenseite jeder Halteplatte 6 ist entsprechend die vom Plattenpaket 2 abgewandte Seite der Halteplatte 6. Symmetrisch zu dem Durchgangsloch 7 ist auf der Außenseite der Halteplatte 6 eine kreisförmige Vertiefung 14 angeordnet, in die ein Flansch oder ein Rohschweißende eingesetzt werden kann.Each holding plate 6 also has a respective through hole 7 with an oblique central axis, wherein the opening of the through hole 7 on the inside of the holding plate 6 is closer to the edge of the holding plate 6 than the opening of the through hole 7 on the outside of the holding plate 6. Inside here designates the side of each holding plate 6, which faces the plate pack 3, the outer side of each holding plate 6 is correspondingly the side facing away from the plate package 2 side of the holding plate 6. Symmetrical to the through hole 7, a circular recess 14 is disposed on the outside of the holding plate 6, in the a flange or a Rohschweißende can be used.

Fig. 4 zeigt einen Schnitt durch die Halteplatte 6 entlang der Linie IV- IV aus Fig. 3. In dieser Zeichnung ist nochmal deutlich zu sehen, dass die Mittelachse 8 des Durchgangslochs 7 jeder Halteplatte 6 schräg verläuft. Auf diese Weise ist auf der Außenseite der Halteplatte 6 mehr Platz zur Befestigung eines Flansches oder einer ähnlichen Vorrichtung vorhanden. Zudem ist in jeder Halteplatte 6 eine zweite kreisförmige Vertiefung 14 zur Befestigung eines weiteren Flansches oder einer ähnlichen Vorrichtung vorgesehen. Fig. 4 shows a section through the holding plate 6 along the line IV-IV Fig. 3 , In this drawing is again clearly seen that the central axis 8 of the through hole 7 of each plate 6 is oblique. In this way, on the outside of the holding plate 6 more space for mounting a flange or similar device is present. In addition, in each holding plate 6, a second circular recess 14 for attachment of another flange or a similar device is provided.

Diese Vertiefung 14 erstreckt sich allerdings nicht über die gesamte Dicke der Halteplatten 6.However, this recess 14 does not extend over the entire thickness of the holding plates 6.

Jede Plattenwärmetauschereinheit 1 ist je nach Auslegung druckbeständig bis 25 bar oder 40 bar, da die Halteplatten 6 und das mindestens eine Fließrichtungsgeberblech 12 bzw. die beiden Fließrichtungsgeberbleche 12 einen Käfig um das Plattenpaket 2 ausbilden und so ein Auseinanderdrücken der Wärmetauscherplatten 3 vermeiden, wenn diese mit Druck beaufschlagt werden. Daher ist jede Plattenwärmetauschereinheit 1 geeignet, um in bereits bestehende Gehäuse, beispielsweise von Rohrbündelwärmetauschem, eingesetzt zu werden und die ursprünglich enthaltenen Rohrbündeleinheit zu ersetzen. Rohrbündelwärmetauscher sind üblicherweise relativ lang, damit die gewünschte Wärmeübertragungsfläche erreicht wird. Es ist daher möglich, mehrere Plattenwärmetauschereinheiten 1 miteinander zu verbinden, und den so entstandenen Verbund in einen vorhanden Mantel bzw. in ein vorhandenes Gehäuse eines Rohrbündelwärmetauschers einzusetzen.Each plate heat exchanger unit 1 is pressure resistant up to 25 bar or 40 bar depending on the design, since the holding plates 6 and the at least one flow direction sensor plate 12 and the two flow direction transducer plates 12 form a cage around the plate package 2 and so avoid pressing apart the heat exchanger plates 3, if this with Pressure are applied. Therefore, each plate heat exchanger unit 1 is adapted to be inserted into existing housings, such as shell and tube heat exchangers, and to replace the originally contained tube bundle unit. Tube bundle heat exchangers are usually relatively long to achieve the desired heat transfer area. It is therefore possible to connect a plurality of plate heat exchanger units 1 with each other, and to use the resulting composite in an existing jacket or in an existing housing of a shell and tube heat exchanger.

In Fig. 5 ist die Verbindung zweier vorstehend beschriebener Plattenwärmetauschereinheiten 1 a, 1b dargestellt. Wie bereits beschrieben, weist jede Halteplatte 6a, 6b einer Plattenwärmetauschereinheit 1 a, 1 b mindestens ein Durchgangsloch 7a, 7b auf, das mit einem Flansch 10a, 10b verbunden ist. Zudem ist an jeder Halteplatte 6a, 6b ein zweiter Flansch 11a, 11 b vorgesehen, der symmetrisch zu dem ersten Flansch 10a. 10b angeordnet ist.In Fig. 5 is the connection of two above-described plate heat exchanger units 1 a, 1b shown. As already described, each holding plate 6a, 6b of a plate heat exchanger unit 1 a, 1 b has at least one through hole 7 a, 7 b, which is connected to a flange 10 a, 10 b. In addition, a second flange 11a, 11b is provided on each holding plate 6a, 6b, which is symmetrical to the first flange 10a. 10b is arranged.

Die beiden Plattenwärmetauschereinheiten 1 a; 1 b werden nun so angeordnet, dass sich jeweils zwei erste Flansche 10a; 10b und zwei zweite Flansche 11a; 11 b gegenüberliegen. Dadurch wird der durch die Durchgangslöcher 7a der Halteplatten 6a und durch die Durchgangslöcher 4a der Wärmetauscherplatten 3a ausgebildete Durchgangskanal der ersten Plattenwärmetauschereinheit 1a mit dem entsprechenden Durchgangskanal der zweiten Plattenwärmetauschereinheit 1b verbunden. Auch die beiden zweiten Flansche 11a; 11b, die zusätzlich an den Halteplatten 6a; 6b angeordnet sind, werden gegenüberliegend zueinander angeordnet. Die Flanschpaare 10a; 10b; 11a; 11b werden miteinander verbunden, vorzugsweise durch eine Schraubverbindung. Zumindest zwischen den beiden ersten Flanschen 10a, 10b ist eine Dichtung angeordnet, so dass eine dichte Verbindung entsteht. Vorzugsweise werden die Plattenwärmetauschereinheiten 1 a; 1 b vertikal in das Plattenwärmetauschergehäuse eingesetzt. Somit stützt sich die obere Plattenwärmetauschereinheit 1 b über die beiden Flanschpaare 10a, 10b; 11a, 11 b an der unteren Plattenwärmetauschereinheit 1 a ab. Durch die symmetrische Anordnung der Flansche 10a, 11a, 10b, 11b ist eine gleichmäßige Abstützung gewährleistet, ein Einknicken der oberen Plattenwärmetauschereinheit 1 b wird vermieden.The two plate heat exchanger units 1 a; 1 b are now arranged so that in each case two first flanges 10 a; 10b and two second flanges 11a; 11 b opposite. Thereby, the passageway of the first plate heat exchange unit 1a formed through the through holes 7a of the holding plates 6a and through the through holes 4a of the heat exchange plates 3a is connected to the corresponding through passage of the second plate heat exchange unit 1b. Also, the two second flanges 11a; 11b, in addition to the holding plates 6a; 6b are arranged, are arranged opposite to each other. The flange pairs 10a; 10b; 11a; 11b are connected together, preferably by a screw connection. At least between the two first flanges 10a, 10b, a seal is arranged, so that a tight connection is formed. Preferably, the plate heat exchanger units 1 a; 1 b vertically inserted into the plate heat exchanger housing. Thus, the upper plate heat exchanger unit 1 b is supported by the two pairs of flanges 10 a, 10 b; 11a, 11b at the bottom plate heat exchanger unit 1 a from. Due to the symmetrical arrangement of the flanges 10a, 11a, 10b, 11b, a uniform support is ensured, a buckling of the upper plate heat exchanger unit 1b is avoided.

In Fig. 6 ist ein Schnitt durch ein Gehäuse 15 eines Rohrbündelwärmetauschers gezeigt, in das vorstehend beschriebene, miteinander verbundene Plattenwärmetauschereinheiten 1 eingesetzt sind. Die Plattenwärmetauschereinheiten 1 sind, wie in Fig. 5 gezeigt, über ihre Flansche 10, 11 miteinander verbunden. Es ist auch möglich, anstelle der Flansche Rohrschweißenden an den Halteplatten 6 zu befestigen und die Plattenwärmetauschereinheiten 1 über die Rohrschweißenden miteinander zu verbinden. Dabei werden jeweils die Rohrschweißenden einer ersten Plattenwärmetauschereinheit 1 mit den Rohrschweißenden einer zweiten Plattenwärmetauschereinheit 1 miteinander verschweißt.In Fig. 6 is a section through a housing 15 of a shell and tube heat exchanger shown in the above-described, interconnected plate heat exchanger units 1 are used. The plate heat exchanger units 1 are, as in Fig. 5 shown connected to each other via their flanges 10, 11. It is also possible to fix pipe welding ends to the holding plates 6 instead of the flanges and to connect the plate heat exchanger units 1 via the pipe welding ends. In each case, the tube welding ends of a first plate heat exchanger unit 1 are welded together with the tube welding ends of a second plate heat exchanger unit 1.

Wie bereits beschrieben, werden die Plattenwärmetauschereinheiten 1 so miteinander verbunden, dass durch die Durchgangslöcher 7 der Halteplatten 6 und die Durchgangslöcher 4 in den Wärmetauscherplatten 3 ein erster Strömungskanal ausgebildet wird, durch den ein erstes, plattenseitiges Wärmeträgermedium strömt. Der Flansch 10 der ersten bzw. untersten Plattenwärmetauschereinheit 1 wird mit dem bestehenden Zufluss des Rohrüündelwärmetauschers für das erste Wärmeträgermedium verbunden. Der Flansch 10 der letzten bzw. obersten Plattenwärmetauschereinheit 1 wird mit dem bestehenden Anschluss des Rohrbündelwärmetauschers für den Austritt des ersten Wärmeträgermediums verbunden. Durch die Innenseite des Gehäuses 15 des Rohrbündelwärmetauschers und die Außenseite der Plattenpakete 2 der Plattenwärmetauschereinheiten 1 wird ein zweiter Strömungskanal für ein zweites, gehäuseseitiges Wärmeträgermedium ausgebildet. Dieses zweite Wärmeträgermedium wird durch die bestehenden Anschlüsse des Rohrbündelwärmetauschers in das Gehäuse 15 hinein und aus diesem herausgeleitet.As already described, the plate heat exchange units 1 are connected to each other such that through the through holes 7 of the holding plates 6 and the through holes 4 in the heat exchanger plates 3, a first flow channel is formed, through which a first plate-side heat transfer medium flows. The flange 10 of the first or lowermost plate heat exchanger unit 1 is connected to the existing inflow of the Rohrüündelwärmetauschers for the first heat transfer medium. The flange 10 of the last or top plate heat exchanger unit 1 is connected to the existing connection of the tube bundle heat exchanger for the exit of the first heat transfer medium. Through the inside of the housing 15 of the tube bundle heat exchanger and the outside of the plate packs 2 of the plate heat exchanger units 1, a second flow channel for a second, housing-side heat transfer medium is formed. This second heat transfer medium is passed through the existing connections of the shell-and-tube heat exchanger into and out of the housing 15.

Wie bereits beschrieben, sind die Halteplatten 6 jeder Plattenwärmetauschereinheit 1 im Wesentlichen kreisförmig, wobei ihr Durchmesser an den Innendurchmesser des Gehäuses 15 des Rohrbündelwärmetauschers angepasst ist. Vorzugsweise entspricht der Außendurchmesser jeder Halteplatte 6 im Wesentlichen dem Innendurchmesser des Gehäuses 15 des Rohrbündelwärmetauschers oder ist etwas kleiner als der Innendurchmesser des Gehäuses 15. Sind die Plattenwärmetauschereinheiten 1 in das Gehäuse 15 des Rohrbündelwärmetauschers eingebracht, so liegen also die Halteplatten 6 an der Innenseite des Gehäuses 15 an. Dadurch werden die Plattenwärmetauschereinheiten 1 in dem Gehäuse 15 zentriert und abgestützt, das Einführen wird erleichtert.As already described, the holding plates 6 of each plate heat exchanger unit 1 are substantially circular, with their diameter being adapted to the inner diameter of the housing 15 of the tube bundle heat exchanger. Preferably, the outer diameter of each holding plate 6 substantially corresponds to the inner diameter of the housing 15 of the tube bundle heat exchanger or is slightly smaller than the inner diameter of the housing 15. If the plate heat exchanger units 1 are inserted into the housing 15 of the tube bundle heat exchanger, then the holding plates 6 on the inside of the housing 15. Thereby, the plate heat exchange units 1 are centered and supported in the housing 15, the insertion is facilitated.

Durch die ringsegmentförmigen Aussparungen 13 der Halteplatten 6 wird ein Strömungskanal für das durch das Gehäuse 15 fließende zweite Wärmeträgermedium ausgebildet. Das gehäuseseitige Wärmeträgermedium wird an oder benachbart zu einer Stirnseite des Gehäuses 15 des Rohrbündelwärmetauschers in das Gehäuse 15 eingeleitet. Da die Halteplatte 6 der ersten Plattenwärmetauschereinheit 1 mit ihrem Umfang an dem Gehäuse 15 anliegt, kann das Wärmeträgermedium nur durch die Aussparung 13 an der Halteplatte 6 vorbeiströmen. Das gehäuseseitige Wärmeträgermedium strömt dann durch das Plattenpaket 2, wodurch ein Wärmetransfer zwischen dem gehäuseseitigen Wärmeträgermedium und dem durch das Plattenpaket 2 strömenden Wärmeträgermedium stattfindet.Through the ring-segment-shaped recesses 13 of the holding plates 6, a flow channel for the flowing through the housing 15 second heat transfer medium is formed. The housing-side heat transfer medium is introduced into or adjacent to an end face of the housing 15 of the tube bundle heat exchanger in the housing 15. Since the retaining plate 6 of the first plate heat exchanger unit 1 rests with its circumference on the housing 15, the heat transfer medium can only flow past the retaining plate 6 through the recess 13. The housing-side heat transfer medium then flows through the plate pack 2, whereby a heat transfer between the housing-side heat transfer medium and the heat transfer medium flowing through the plate pack 2 takes place.

Die zweite Halteplatte 6 jeder Plattenwärmetauschereinheit 1 ist vorzugsweise so angeordnet, dass sie gegenüber der ersten Halteplatte 6 um 180° gedreht ist, so dass die Aussparung 13 der ersten Halteplatte 6 und die Aussparung 13 der zweiten Halteplatte 6 auf gegenüberliegenden Seiten des Plattenpakets 2 angeordnet sind. Somit tritt das gehäuseseitige Wärmeträgermedium also an einer Seite des Plattenpakets 2 in das Gehäuse 15 ein, strömt durch das Plattenpaket 2 hindurch, tritt an der gegenüberliegenden Seite wieder aus und wird dort über die Aussparung 13 der zweiten Halteplatte 6 in die anschließende Plattenwärmetauschereinheit 1 weitergeleitet.The second holding plate 6 of each plate heat exchange unit 1 is preferably arranged so as to be rotated 180 ° with respect to the first holding plate 6 so that the recess 13 of the first holding plate 6 and the recess 13 of the second holding plate 6 are arranged on opposite sides of the plate package 2 , Thus, the housing-side heat transfer medium thus enters the housing 15 on one side of the plate pack 2, flows through the plate pack 2, emerges again on the opposite side and is forwarded there via the recess 13 of the second holding plate 6 into the subsequent plate heat exchanger unit 1.

Da die Fließrichtungsgeberbleche 12 an zwei Seiten jedes Plattenpakets 2 angeordnet sind, kann das gehäuseseitige Wärmeträgermedium nicht seitlich an dem Plattenpaket 2 vorbeiströmen, sondern muss durch das Plattenpaket 2 hindurchströmen. Die Fließrichtungsgeberbleche 12 weisen also zwei Funktionen auf. Zum Einen vermeiden sie, dass sich im gehäuseseitigen Wärmeträgermedium By-Pass-Strömungen ausbilden, die seitlich an dem Plattenpaket 2 vorbei an der Innenseite des Gehäuses 15 entlangführen. Zum Anderen sind die Fließrichtungsgeberbleche 12 zugstabil ausgebildet, so dass sie die im Betrieb der Plattenwärmetauscheinheit 1 entstehenden Zugkräfte aufnehmen und auf die Halteplatten 6 übertragen können. Vorzugsweise weisen die Fließrichtungsgeberbleche 12 eine Dicke von mindestens 5 mm auf, so dass die gewünschte Festigkeit erreicht wird.Since the flow direction sensor plates 12 are arranged on two sides of each plate pack 2, the housing-side heat transfer medium can not flow laterally past the plate pack 2, but must flow through the plate pack 2. The flow direction transducer plates 12 thus have two functions. On the one hand, they prevent the formation of by-pass flows in the housing-side heat transfer medium, which flow laterally past the plate pack 2 past the inside of the housing 15. On the other hand, the flow direction transducer plates 12 are designed to be resistant to tensile stress, so that they can absorb the tensile forces arising during operation of the plate heat exchange unit 1 and transfer them to the holding plates 6. Preferably, the flow direction transducer plates 12 have a thickness of at least 5 mm, so that the desired strength is achieved.

Durch die Käfigkonstruktion der Plattenwärmetauschereinheiten 1 sind diese auch für den Hochdruckbereich, d. h. je nach Auslegung für Druckbereiche von 150 bis über 300 bar, einsetzbar. Die Plattenwärmetauscheinheiten 1 können daher in Hochdruckmäntel von Rohrbündelwärmetauschern eingesetzt werden, die beispielsweise bei Hydrieranlagen verwendet werden. Vorzugsweise ist das Gehäuse 15 des Rohrbündelwärmetauschers so ausgelegt, dass es druckstabil bis mindestens 300 bar ist. Der Differenzdruck zwischen dem gehäuseseitigen Wärmeträgermedium und dem plattenseitigen Wärmeträgermedium liegt in der Regel im Bereich von etwa 25 bar.Due to the cage construction of the plate heat exchanger units 1, these are also for the high pressure area, ie depending on the design for pressure ranges from 150 to about 300 bar, can be used. The plate heat exchange units 1 can therefore be used in high-pressure jackets of tube bundle heat exchangers, which are used for example in hydrogenation plants. Preferably, the housing 15 of the tube bundle heat exchanger is designed so that it is pressure-stable to at least 300 bar. The differential pressure between the housing-side heat transfer medium and the plate-side heat transfer medium is usually in the range of about 25 bar.

In Fig. 6 sind die einzelnen Plattenwärmetauschereinheiten 1 in Reihe miteinander verbunden. Es kann aber auch vorgesehen werden, dass die Plattenwärmetauschereinheiten 1 parallel geschaltet werden. Dazu müssen weitere Rohrleitungen in dem Inneren des Gehäuses 15 des Rohrbündelwärmetauschers vorgesehen werden. Es ist auch eine Kombination einer Reihen- und einer Parallelschaltung der einzelnen Plattenwärmetauschereinheiten 1 möglich.In Fig. 6 the individual plate heat exchanger units 1 are connected in series. But it can also be provided that the plate heat exchanger units 1 are connected in parallel. For this purpose, further pipelines must be provided in the interior of the housing 15 of the tube bundle heat exchanger. It is also a combination of a series and a parallel connection of the individual plate heat exchanger units 1 possible.

Der Durchmesser der Halteplatten, der Wärmetauscherplatten und der Unterstützungsplatten kann auf bereits bestehende Gehäuseinnendurchmesser angepasst werden. Wie bereits beschrieben, entspricht der Außendurchmesser der Halteplatten 6 vorzugsweise dem Innendurchmesser des Gehäuses 15, der Durchmesser der Wärmetauscherplatten 3 kann beliebig kleiner sein als der Innendurchmesser des Gehäuses 15. Durch eine Veränderung des Durchmessers der Wärmetauscherplatten 3 kann in die Wärmeübertragungsfläche variiert werden. Die Wärmeübertragungsfläche der Plattenwärmetauschereinheiten 1 kann ferner durch die Anzahl der Wärmetauscherplatten in dem Plattenpaket der Plattenwärmetauschereinheit verändert werden. Es ist auch möglich, nur eine geringere Anzahl an Plattenwärmetauschereinheiten in ein bestehendes Gehäuse einzusetzen, so dass die Wärmeaustauschfläche eines bestehenden Rohrbündelwärmetauschers bei einem Ersatz der Rohrbündeleinheit durch eine oder mehrere Plattenwärmetauschereinheiten verkleinert, vergrößert oder konstant gehalten werden kann.The diameter of the retaining plates, the heat exchanger plates and the support plates can be adapted to existing housing inner diameter. As already described, the outer diameter of the holding plates 6 preferably corresponds to the inner diameter of the housing 15, the diameter of the heat exchanger plates 3 can be arbitrarily smaller than the inner diameter of the housing 15. By changing the diameter of the heat exchanger plates 3 can be varied in the heat transfer surface. The heat transfer area of the plate heat exchange units 1 can be further changed by the number of heat exchanger plates in the plate pack of the plate heat exchange unit. It is also possible to insert only a smaller number of plate heat exchanger units in an existing housing, so that the heat exchange surface of an existing shell and tube heat exchanger can be reduced, increased or kept constant when replacing the tube bundle unit by one or more plate heat exchanger units.

In Fig. 6 sind die stirnseitigen Deckel des Rohrbündelwärmetauschers nicht dargestellt. Das Gehäuse 15 wird aber stirnseitig mit den bereits vorhandenen, für den Rohrbündelwärmetauscher konstruierten Deckeln abgeschlossen. In der Regel werden die Rohrbündelwärmetauscher vertikal betrieben. Die in dem Gehäuse 15 angeordneten Plattenwärmetauschereinheiten 1 stützen sich dann über die Flansche 10 bzw. 11 gegeneinander ab. In der Regel ist die unterste Plattenwärmetauschereinheit 1 an einer Abstützung befestigt. Die anderen Plattenwärmetauschereinheiten stützen sich auf der untersten Plattenwärmetauschereinheit ab und sind nicht zusätzlich befestigt, um eine Wärmeausdehnung zu ermöglichen. Es ist aber auch vorstellbar, die Plattenwärmetauschereinheiten auf eine andere Art in dem Gehäuse 15 zu befestigen.In Fig. 6 the frontal cover of the tube bundle heat exchanger are not shown. However, the housing 15 is closed at the end face with the already existing, constructed for the tube bundle heat exchanger covers. As a rule, the tube bundle heat exchangers are operated vertically. The arranged in the housing 15 plate heat exchanger units 1 are then based on the flanges 10 and 11 from each other. In general, the lowest plate heat exchanger unit 1 is attached to a support. The other plate heat exchanger units rely on the lowest plate heat exchanger unit and are not additionally attached to thermal expansion to enable. However, it is also conceivable to fix the plate heat exchanger units in a different way in the housing 15.

Claims (15)

  1. Conversion set for a tube bundle heat exchanger having a cylindrical housing (15), with at least one plate heat exchanger unit (1) for the replacement of the tube bundle unit which comprises at least the following components:
    a plate packet (2) having at least two heat exchanger plates (3), each comprising at least one through hole (4) and welded to each other in pairs along the periphery thereof or along the periphery of the through holes (4), two mounting plates (6) each having at least one through hole (7), wherein in each case one of the mounting plates (6) is arranged at each end of the plate packet (2) and is connected to each outermost heat exchanger plate (3) of the plate packet (2),
    and
    at least one tension means extending in the longitudinal direction between the mounting plates (6) and connected to both mounting plates (6), so that the two mounting plates (6) and the tension means (12) form a cage about the plate packet (2), said cage absorbing the forces arising in the plate packet (2) in the operating state of the plate heat exchanger unit (1), wherein the outer diameter of the plate heat exchanger unit (1) is adapted to the inner diameter of the cylindrical housing (15) of the tube bundle heat exchanger, the tension means extending at least partially around the periphery of the plate packet (2), characterized in that the tension means is designed as a flow director (12).
  2. Conversion set according to Claim 1, characterised in that the mounting plates (6) are essentially circular and each has a recess (13) at its edge for diverting the flow of a heat transfer medium flowing through the housing (15) of the tube bundle heat exchanger.
  3. Conversion set according to Claim 2, characterised in that the recess (13) on the edge of the mounting plates (6) has the shape of a ring segment.
  4. Conversion set according to Claim 3, characterised in that the recess (13) in each mounting plate (6) and having the shape of a ring segment extends over an angle of approx. 90°.
  5. Conversion set according to one of the Claims 1 to 4, characterised in that the external diameter of the mounting plates (6) is greater than the external diameter of the heat exchanger plates (3) of the plate packet (2) and corresponds approximately to the internal diameter of the housing (15) of the tube bundle heat exchanger.
  6. Conversion set according to one of the Claims 1 to 5, characterised in that a central axis (8) of the at least one through hole (7) in each mounting plate (6) runs obliquely and at an angle to the central axis (9) of the corresponding mounting plate (6) so that the opening of the through hole (7) on the inner side of the mounting plate (6) is arranged closer to the edge of the mounting plate (6) than the opening of the through hole (7) on the outer side of the mounting plate (6).
  7. Conversion set according to one of the Claims 1 to 6, characterised in that an inner side of the at least one flow director (12) is located on the external diameter of the plate packet (2) and an outer side of the at least one flow director (12) terminates with the outer diameter of the mounting plates (6).
  8. Conversion set according to one of the Claims 1 to 7, characterised in that the flow director (12) has a thickness of at least 5 mm.
  9. Conversion set according to one of the Claims 1 to 8, characterised in that at least one further flow director (12) is provided, wherein both flow directors (12) are arranged on oppositely situated sides of the plate packet (2).
  10. Conversion set according to one of the Claims 1 to 9, characterised in that on the through hole (7) of each mounting plate (6) a first flange (10) is arranged and on each mounting plate (6) a further flange (11) is provided.
  11. Conversion set according to one of the Claims 1 to 9, characterised in that on the through hole (7) of each mounting plate (6) a first pipe weld end is arranged and on each mounting plate (6) a further pipe weld end is provided.
  12. Conversion set according to one of the Claims 1 to 11, characterised in that a support plate (5) is arranged on the inner side of each mounting plate (6) and each mounting plate (6) is in each case connected to the outermost heat exchanger plate (3) of the plate packet (2) by means of the support plate (5).
  13. Conversion set according to one of the Claims 1 to 12, characterised in that the conversion set comprises at least two plate heat exchanger units (1), which are connected together by means of the flanges (10, 11) or pipe weld ends, wherein the mounting plates (6) and the flanges (10, 11) or pipe weld ends are designed such that they support the weight of the plate heat exchanger units (1).
  14. Conversion set according to one of the Claims 1 to 13, characterised in that the housing (15) of the tube bundle heat exchanger is a high pressure housing for a pressure range of at least 150 bar.
  15. Use of a plate heat exchanger unit (1) which comprises at least the following components:
    a plate packet (2) having at least two heat exchanger plates (3), each comprising at least one through hole (4) and welded to each other in pairs along the periphery thereof or along the periphery of the through holes (4),
    two mounting plates (6) each having at least one through hole (7), wherein in each case one of the mounting plates (6) is arranged at each end of the plate packet (2) and is connected to each outermost heat exchanger plate (3) of the plate packet (2), and
    at least one tension means extending in the longitudinal direction between the mounting plates (6) and connected to both mounting plates (6), so that the two mounting plates (6) and the tension means (12) form a cage about the plate packet (2), said cage absorbing the forces arising in the plate packet (2) in the operating state of the plate heat exchanger unit (1), wherein the outer diameter of the plate heat exchanger unit (1) is adapted to an inner diameter of a cylindrical housing (15) of a tube bundle heat exchanger, and the tension means is designed as a flow director (12) extending at least partially around the periphery of the plate packet (2),
    in the cylindrical housing (15) of the tube bundle heat exchanger for the replacement of the tube bundle unit.
EP08773495A 2008-06-18 2008-06-18 Conversion set for a tube bundle heat exchanger Active EP2304370B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/004905 WO2009152830A1 (en) 2008-06-18 2008-06-18 Conversion set for a tube bundle heat exchanger

Publications (2)

Publication Number Publication Date
EP2304370A1 EP2304370A1 (en) 2011-04-06
EP2304370B1 true EP2304370B1 (en) 2013-01-09

Family

ID=40549881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08773495A Active EP2304370B1 (en) 2008-06-18 2008-06-18 Conversion set for a tube bundle heat exchanger

Country Status (4)

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US (1) US9080815B2 (en)
EP (1) EP2304370B1 (en)
CA (1) CA2728106A1 (en)
WO (1) WO2009152830A1 (en)

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Publication number Publication date
CA2728106A1 (en) 2009-12-23
US20110139400A1 (en) 2011-06-16
US9080815B2 (en) 2015-07-14
WO2009152830A1 (en) 2009-12-23
EP2304370A1 (en) 2011-04-06

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