EP2051035B1 - Échangeur thermique à plaque - Google Patents

Échangeur thermique à plaque Download PDF

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Publication number
EP2051035B1
EP2051035B1 EP08164322.3A EP08164322A EP2051035B1 EP 2051035 B1 EP2051035 B1 EP 2051035B1 EP 08164322 A EP08164322 A EP 08164322A EP 2051035 B1 EP2051035 B1 EP 2051035B1
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EP
European Patent Office
Prior art keywords
heat exchanger
plate
bolts
end plate
plate heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP08164322.3A
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German (de)
English (en)
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EP2051035A2 (fr
EP2051035A3 (fr
Inventor
Anders Nyander
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Alfa Laval Corporate AB
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Alfa Laval Corporate AB
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Application filed by Alfa Laval Corporate AB filed Critical Alfa Laval Corporate AB
Publication of EP2051035A2 publication Critical patent/EP2051035A2/fr
Publication of EP2051035A3 publication Critical patent/EP2051035A3/fr
Application granted granted Critical
Publication of EP2051035B1 publication Critical patent/EP2051035B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/083—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning capable of being taken apart
    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/0075—Supports for plates or plate assemblies
    • 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
    • F28F2275/08—Fastening; Joining by clamping or clipping
    • 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 present invention relates to a plate heat exchanger of the kind comprising a package of heat transferring plates, two end plates between which the package of heat transferring plates are kept together, and more specifically to a plate heat exchanger having an arrangement for automatically opening the plate heat exchanger for permitting inspection, cleaning, repair, replacement and/or removal of heat transferring plates and the like.
  • a plate heat exchanger according to the preamble of claim 1 is known from EP-A2-1462752 and US 5 462 112 .
  • a plate heat exchanger of this kind may need to be opened relatively often, e.g. once every day, for inspection and/or cleaning of the heat transferring plates. This process may require the removal of one or more plates for closer inspection or cleaning.
  • one of the end plates is fixed and the other end plate is moveable towards the fixed end plate to close the plate heat exchanger and is movable away from the fixed end plate to open the plate heat exchanger.
  • Tightening bolts are used to keep the end plates together and the tightening bolts are secured by nuts.
  • To open the plate heat exchanger by moving the end plate either the bolts or the nuts have to be rotated, so that the end plates and thus the heat transferring plates may be moved away from each other.
  • a plate heat exchanger a package of heat transferring plates is kept together between two end plates by means of two or more threaded bolts and nuts in threading engagement therewith.
  • a motor is arranged through an endless drive member, such as a tooth belt or the like, simultaneously to rotate all the bolts or all the nuts.
  • the plate heat exchanger thereby may be rapidly, simply and safely opened and restored for operation in connection with inspection and/or cleaning of the heat transferring plates.
  • a plate heat exchanger including two end plates, a package of heat transfer plates arranged between the end plates, and a closure system.
  • the closure system includes a plurality of tie bar assemblies.
  • Each tie bar assembly includes a tie bar extending between the first and second plates, and a threaded member engaging the tie bar.
  • the closure system and the end plates are relatively arranged and configured such that relative rotation between the tie bar and the threaded member of each tie bar assembly is operative to move the movable end plate towards and away from the fixed end plate to close and open, respectively, the plate heat exchanger.
  • the plate heat exchanger is arranged and configured such that the heat transfer plates can be removed from the plate heat exchanger without relocating any of the tie bars.
  • the present invention has for its object to provide an plate heat exchanger having means for automatically and simultaneously opening the opening of a plate heat exchanger and restoring of it for operation, and that further is provided with means for easy removal, cleaning, service and insertion of heat exchanger plate into the plate heat exchanger, without deteriorating the plate heat exchanger capability to withstand high pressures during its operation.
  • a plate heat exchanger having automatic opening means and having at least one partly removable threaded tightening bolt.
  • the plate heat exchanger may be rapidly and simply opened to a desired degree and, with the same rapidity and simplicity, restored for operation after removal, inspection, cleaning and service or insertion of heat exchanging plates.
  • Through the simultaneous rotation of all the bolts or nuts much time can be saved in connection with opening and restoring of the plate heat exchanger. Further, it is made sure thereby that the bolts and the end plates are subjected to a uniform load or stress during the whole compression of the package of heat exchanging plates.
  • Said at least one partly removable bolt includes two portions, a first removable portion extending from the fixed end plate, through the other movable end plate to a position close to the drive unit and a second portion extending from a position close to the drive unit to a position inside the drive unit.
  • the two portions of said at least one partly removable bolt may be connected by a shaft connection, where the shaft connection is designed so that the first removable portion can be separated from the second portion without moving said at least one partly removable bolt axially.
  • a friction reducing bearing is arranged between each bolt head and the end plate.
  • At least one of the bolt heads may be removably attached to the end plate.
  • each nut is connected to a nut fixation device that prevents rotation of the nut in relation to the movable end plate and that prevents axial movement of the nut in relation to the movable end plate.
  • At least one of the nut fixation devices may be removably attached to the movable end plate.
  • each of the end plates is provided with at least one cut-out or recess on each long side of the end plate for receiving said at least one partly removable bolt.
  • the at least one cut-out or recess on each long side of the end plate for receiving said at least one partly removable bolt may enable said at least one partly removable bolt to be removed radially.
  • the drive unit comprises a motor that is arranged to simultaneously, rotationally drive all the threaded bolts via a force translating system, and thereby moving the end plate between two positions.
  • the drive unit may be electrically operated, and each threaded bolt may be associated to a separate gear box, the gear boxes being connected to the motor via a shaft- and belt arrangement.
  • At least one of bolts on each side of the plate package is arranged to be partly removable, thereby giving the user the possibility to remove a heat exchanger plate from any side of the plate heat exchanger.
  • the plate heat exchanger is provided with a security system for interruption of the movement of the movable end plate from any places around the plate heat exchanger.
  • Heat exchangers are used for transferring heat between two fluids separated by a solid body. Heat exchangers can be of several types, the most common are spiral heat exchangers, tubular heat exchangers and plate heat exchangers. Plate heat exchangers are used for transferring heat between a hot and a cold fluid that are flowing in alternate flow passages formed between a set of heat exchanger plates. The arrangement of heat exchanger plates defined above is enclosed between end plates that are relatively thicker than the heat exchanger plates. The inner surface of each end plate faces the heat transfer plates.
  • Fig. 1 shows a plate heat exchanger 100 comprising a package of heat transferring plates 1, which are kept together between two end plates 2 and 3.
  • the heat exchanger or transferring plates 1 are arranged hanging on a carrying bar 4 that substantially extends between the two end plates 2, 3.
  • the carrying bar 4 is in one end fixedly attached to an upper end of the end plate 2 and in the opposite end fixedly attached to an upper end of a support column 5.
  • the end plate 3, which is movable along the carrying bar 4 is used to press the heat exchanger plates 1 together to form a plate package.
  • a guide bar 6, that guides the heat exchanger plates 1 in their lower end, connects a lower end of the support column 5 with a lower end of the end plate 2.
  • the plate package is shown as schematic box.
  • the plate package may be housed by a cover to protect for dirt and the like.
  • the heat exchanger plate 1 discussed above includes in a manner known per se a corrugation or pattern for increasing the heat transfer and a number of port holes, typically four, for forming a corresponding number of port channels extending through the plate package and being in connection with the flow channels formed between the heat exchanger plates 1.
  • the end plate 2 is suitably provided with a number of port or connections corresponding to ports of the heat exchanger plate 1.
  • the end plate 3 may also be provided with ports, as well as the port of the end plate 2 may be provided with a blind cover.
  • the heat exchanger plates 1 which between themselves usually have flexible gaskets 8 (best shown in Fig. 5 ) for defining flow spaces between the heat exchanger plates 1 for two heat exchange fluids.
  • the gasket 8, which is preferably made of an elastic material, e.g. rubber material, is disposed in a groove which extends along the periphery of the constituent heat exchanger plates 1 and around ports.
  • the gasket 8 may possibly comprise a metal or be surrounded by a second material, e.g. metal, PTFE, etc.
  • the tightening bolts 9 extend between the fixed end plate 2 and a drive unit 10 arranged on the support column 5, and passing through holes or recesses in the edge portions of the two end plates 2, 3.
  • Each bolt 9 has a bolt head means 11 at one of its ends, possibly situated at the outside (or integrated in) of the end plate 2 (see Figs. 7-9 ), and carries nuts 12 on its threaded part, possibly situated at the outside (or integrated in) of the end plate 3 (see Figs. 8 and 11 ).
  • the drive unit 10 may be based on a solution with one electrical motor 14, which is driving all the tightening bolts 9 in a synchronized manner.
  • a gear box 15 arranged on each bolt 9 the required torque of the motor 14 is reduced.
  • the motor speed is controlled by a motor drive 16.
  • a programmable logic controller unit (PLC) 17 can be used to program different ramping of speed and acceleration of the electrical motor 14 and to monitor the drive unit system and alarms thereto related.
  • the gear boxes 15 are connected to the motor 14 by a shaft-and belt arrangement 70-74, where three gear boxes 15 are connected to each other by shafts 71 and where another three gear boxes 15 are connected to each other by shafts 72.
  • the shafts 71 and 72 are connected to the shaft 70 of the motor 14 by belts 73 and 74.
  • the shaft 70, the belts 73 and 74 transfer the rotational movement from the shaft 70 and the motor 14 to the shaft 71 and 72 and further to the gear boxes 15 to drive all the tightening bolts 9 in a synchronized manner.
  • a non-electrical motor or driving means is also possible.
  • the plate heat exchanger is provided with three tightening bolts 9a, 9b, 9c on each side of the plate package.
  • at least one tightening bolt 9 on one side of the plate package is removable, preferably the intermediate tightening bolts 9b located between the other two tightening bolts 9a and 9c.
  • the removable tightening bolt 9b could be located on any side of the plate package. If only one removable tightening bolt 9b is provided it can be located according to the preference of the user.
  • the plate heat exchanger may include two or more removable tightening bolts 9b.
  • the removable bolt 9b is equipped with one shaft connection 18 (see Figs. 6 and 13 ) between the drive unit 10 and the movable end plate 3, which is designed in a manner so that it can easily be separated from a shaft 19 of the drive unit 10 without moving the bolt 9b axially.
  • Fig. 6 one possible shaft connection design is shown, but other shaft connections are also possible.
  • Fig. 13 shows that the shaft connection 18 comprises two parts 18a and 18b that put together by a screw joint 30. The parts 18a and 18b are typically clamped onto the bolt 9b and the shaft 19, respectively.
  • the bolt head means 11 comprises a bearing unit 20, 20a, 20b, 20c on the end plate that supports the bolt 9, 9a, 9b, 9c, and taking up the axial forces.
  • the end plate 2 has a cut-out 21 (see Figs. 1 and 8-9 ) located on each long side of the end plate 2 allowing the removable bolt 9b to be removed radially.
  • the bearing unit 20 is fixed to the end plate 2 by screws, locking pins or other attaching means 60 to support the bearing unit 20 axially when the movable end plate 3 is moved in direction from the end plate 2.
  • the center located bearing unit 20b comes off together with the bolt 9b.
  • the end plate 2 have holes located in each corner of the end plate 2 (see Figs. 3 , 5 and 12 ) to receive the tightening bolts 9a, 9c.
  • Bearing units 20a and 20c supporting the tightening bolts 9a, 9c are fixed to the end plate 2 by screws, locking pins or other attaching means to support the bearing units 20a and 20c axially when the movable end plate 3 is moved in direction from the end plate 2.
  • the nuts 12 (see Figs. 10 and 11 ) on the threaded part of the tightening bolts 9 that are situated at the outside of the end plate 3 rests towards a flat surface of the end plate 3 which takes up the axial forces of the plate package, resulting from gasket forces and the pressure of the process media.
  • the end plate 3 has a cut-out 23 (see Figs. 1 and11) located on each long side of the end plate 3 allowing the removable tightening bolt 9b to be removed radially.
  • the nut 12, 12a, 12b, 12c is attached to the end plate 3 by a nut fixing device 24, 24a, 24b, 24c (see Figs. 10-11 and 14b-14c ).
  • the nut fixing device 24b is easily unscrewed from the end plate 3 to allow the nut 12b to be removed together with the bolt 9b.
  • the function of the nut fixation device 24 is to lock the rotation of the nut 12 and to fix the nut 12 axially to the end plate 3 when moving backwards (away from the end plate 2) in an unloaded mode and to keep the nuts 12 synchronized axially.
  • Fig. 14a shows the nut fixing device 24b from the behind.
  • Figs. 14b and 14c show cross sectional views of the nut fixing device 24b seen along the lines E and F, respectively, of Fig. 14a .
  • the nut fixation device 24 only allows the nut 12 to be mounted in two positions, separated rotationally 180°.
  • the tolerances of the fixation mounting screws are smaller that half the thread elevation of the bolt 9b. This combined guarantees that the nut 12b is correctly refitted and synchronized.
  • the nut fixing devices 24a-24c may be slightly differently designed, but they all fulfill the same purpose.
  • the nut 12 provided at the end plate 3 is designed to take up deviations both radially and in alignment.
  • the nut 12 is resting on spherical washers 25 (see Figs. 14b and 14c ), which allow it to incline and follow the angle of the bolt 9. This reduces unnecessary forces on the treads when the frame is flexing due to the weight of the different components. This feature is especially important when using bolts 9 with threads of low elevation, "M"-thread or similar. Low elevation of the treads help to keep the bolt torque low when closing the plate heat exchanger 100.
  • the nut 12 is allowed to move radially as a hole through the end plate 3 is made with a clearance to the bolt 9.
  • the nut 12 has groove for rotational fixation which fits to the fixation device 24.
  • the groove is mounted vertically to allow the nut 12 to slide and incline mainly in vertical direction, the direction which is most likely to deviate.
  • the flexible design is made to allow the nut 12 mainly (only) to take up the axial forces created by the gaskets 8 and media pressure and not be stressed by any forces created by tolerances in the frame.
  • the open design of the nut assembly (12, 24, 25) provides for easy inspection and cleaning and the clearance between all components allow cleaning water to flush out of the design. This makes seals unnecessary.
  • the nut 12 is equipped with a grease nipple 41 to allow the threads inside the nut 12 to be properly lubricated.
  • the tightening bolt/bolts 9b can be removed to enabling full access to the heat exchanger plates 1.
  • the bolt 9b is removed from the plate heat exchanger 100 by disconnecting the shaft connection 18 between the drive unit 10 and the movable end plate 3; unfasten the bearing unit 20b from the end plate 2 and the nut fixation device 24b from the end plate 3 and removing the bolt 9b radially with its connected parts. After the heat exchanger plates 1 are maintained as desired the process is reversed and the tightening bolt or bolts 9b are re-installed and the parts are fastened.
  • the drive unit 10 ensures that the end plate 3 again is moved towards the end plate 2, pressing the heat exchanger plates 1 together to again form the plate package and making the plate heat exchanger 100 ready for operation.
  • Figs. 4-5 show schematically a plate heat exchanger 100 according to the invention opened for inspection or cleaning of the heat exchanger plates 1.
  • a safety switch is mounted in form of a line breaker 50 or a light barrier following the sides of the plate heat exchanger 100. This makes it possible for an operator to stop the movement of the end plate 3 from any position around the plate heat exchanger 100.
  • the plate heat exchanger 100 is provided with three tightening bolts on each side of the plate package having one removable tightening bolt.
  • the number and positions of the tightening bolts is decided based upon most cost effective design of drive unit and heat exchanger plates, and therefore may there be further tightening bolts if that is needed in view of the construction of the plate heat exchanger and the work is aimed to perform.
  • the drive unit is located as far away as possible from the plate package to avoid that the drive unit is exposed to heat from the process.

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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)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Claims (13)

  1. Échangeur thermique à plaques (100) comprenant un paquet (1) de plaques d'échangeur thermique, deux plaques d'extrémité (2, 3) entre lesquelles le paquet (1) de plaques d'échangeur thermique est maintenu, une pluralité de boulons filetés (9, 9a, 9b, 9c), les boulons (9, 9a, 9b, 9c) s'étendant entre la plaque d'extrémité (2) et une unité d'entraînement (10) en traversant la plaque d'extrémité (3), l'unité d'entraînement étant conçue pour mettre en rotation de manière synchronisée les boulons (9, 9a, 9b, 9c) possédant des têtes de boulon (11) adaptées pour appuyer directement ou indirectement contre l'une (2) des plaques d'extrémité, une pluralité d'écrous (12, 12a, 12b, 12c) dont chacun est en engagement fileté avec l'un des boulons (9, 9a, 9b, 9c) et est adapté pour appuyer directement ou indirectement contre l'autre plaque d'extrémité (3), les boulons (9, 9a, 9b, 9c) et les écrous (12, 12a, 12b, 12c) servant au rapprochement ou à l'éloignement de l'une des deux plaques d'extrémité (3) par rapport à l'autre, l'unité d'entraînement (10) comprenant, en outre, un agencement rotatif pour chacun des boulons (9, 9a, 9b, 9c) et un moteur (14) configuré pour l'entraînement de l'agencement rotatif pour chacun des boulons (9, 9a, 9b, 9c) pour permettre une rotation simultanée de tous les boulons (9, 9a, 9b, 9c), les têtes de boulon (11) et les écrous (12, 12a, 12b, 12c) étant reliés à leurs plaques d'extrémité (2, 3) respectives d'une manière empêchant qu'ils s'écartent axialement de leurs plaques d'extrémité (2, 3) respectives lors du fonctionnement de l'unité d'entraînement (10), caractérisé par le fait qu'au moins un des boulons (9, 9a, 9b, 9c) est conçu pour être en partie amovible en ce sens qu'il comprend deux parties, une première partie amovible s'étendant de la plaque d'extrémité (2) jusqu'à une position proche de l'unité d'entraînement (10) en passant à travers la plaque d'extrémité (3) et une seconde partie s'étendant d'une position proche de l'unité d'entraînement (10) jusqu'à une position à l'intérieur de l'unité d'entraînement (10).
  2. Échangeur thermique à plaques (100) selon la revendication 1, dans lequel les deux parties dudit au moins un des boulons (9, 9b) sont reliées par une liaison d'arbre (18), la liaison d'arbre étant conçue de telle sorte que la première partie amovible puisse être séparée de la seconde partie sans déplacement axial dudit au moins un des boulons (9, 9b).
  3. Échangeur thermique à plaques (100) selon la revendication 1, dans lequel un palier réducteur de frottement (20) est agencé entre chaque tête de boulon (11) et la plaque d'extrémité (2).
  4. Échangeur thermique à plaques (100) selon la revendication 1, dans lequel au moins une des têtes de boulon (11) est fixée de manière amovible à la plaque d'extrémité (2).
  5. Échangeur thermique à plaques (100) selon la revendication 1, dans lequel chaque écrou (12, 12a, 12b, 12c) est relié à un dispositif de fixation d'écrou (24) qui empêche la rotation de l'écrou (12, 12a, 12b, 12c) par rapport à la plaque d'extrémité (3) et qui empêche un déplacement axial de l'écrou (12, 12a, 12b, 12c) par rapport à la plaque d'extrémité (3).
  6. Échangeur thermique à plaques (100) selon la revendication 5, dans lequel au moins un des dispositifs de fixation d'écrou (24) est fixé de manière amovible à la plaque d'extrémité (3).
  7. Échangeur thermique à plaques (100) selon la revendication 1, dans lequel chacune des plaques d'extrémité (2, 3) est pourvue d'au moins un évidement ou creux (21, 23) sur chaque côté long de la plaque d'extrémité (2, 3) pour recevoir ledit au moins un des boulons (9, 9b).
  8. Échangeur thermique à plaques (100) selon la revendication 7, dans lequel l'au moins un évidement ou creux (21, 23) sur chaque côté long de la plaque d'extrémité (2, 3), destiné à recevoir ledit au moins un des boulons (9, 9b), permet de retirer radialement ledit au moins un des boulons (9, 9b).
  9. Échangeur thermique à plaques (100) selon la revendication 1, dans lequel l'unité d'entraînement (10) comprend un moteur (14) qui est conçu pour entraîner en rotation de manière simultanée tous les boulons filetés (9, 9a, 9b, 9c) par l'intermédiaire d'un système de translation de force (15, 70, 71, 72, 73, 74), ce qui déplace la plaque d'extrémité (3) entre deux positions.
  10. Échangeur thermique à plaques (100) selon la revendication 9, dans lequel l'unité d'entraînement (10) est commandée électriquement, et dans lequel chaque boulon fileté (9, 9a, 9b, 9c) est associé à un train d'engrenages (15) séparé, les trains d'engrenage (15) étant reliés au moteur (14) par le biais d'un agencement à arbres et courroies (70, 71, 72, 73, 74).
  11. Échangeur thermique à plaques (100) selon la revendication 9, dans lequel chaque boulon fileté (9, 9a, 9b, 9c) est associé à un train d'engrenages (15) séparé, les trains d'engrenage (15) étant reliés au moteur (14) par le biais d'un agencement à arbres et courroies (70, 71, 72, 73, 74).
  12. Échangeur thermique à plaques (100) selon l'une quelconque des revendications précédentes, dans lequel au moins un des boulons (9, 9a, 9b, 9c) sur chaque côté du paquet de plaques est conçu pour être partiellement amovible.
  13. Échangeur thermique à plaques (100) selon l'une quelconque des revendications précédentes, dans lequel l'échangeur thermique à plaques (100) est pourvu d'un système (50) permettant d'interrompre le mouvement de la plaque d'extrémité mobile (3).
EP08164322.3A 2007-10-15 2008-09-15 Échangeur thermique à plaque Active EP2051035B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0702303A SE532197C2 (sv) 2007-10-15 2007-10-15 Plattvärmeväxlare
US98813507P 2007-11-15 2007-11-15

Publications (3)

Publication Number Publication Date
EP2051035A2 EP2051035A2 (fr) 2009-04-22
EP2051035A3 EP2051035A3 (fr) 2013-01-16
EP2051035B1 true EP2051035B1 (fr) 2014-12-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08164322.3A Active EP2051035B1 (fr) 2007-10-15 2008-09-15 Échangeur thermique à plaque

Country Status (3)

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US (1) US20090095457A1 (fr)
EP (1) EP2051035B1 (fr)
SE (1) SE532197C2 (fr)

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EP2474804A1 (fr) * 2011-01-10 2012-07-11 Alfa Laval Corporate AB Échangeur thermique à plaque
KR101490634B1 (ko) * 2013-12-06 2015-02-05 주식회사 포스코 이물제거장치를 구비하는 열교환기
US20160097605A1 (en) * 2014-10-07 2016-04-07 Spx Corporation Hydraulic Closure Unit and Retrofit System for a Plate Heat Exchanger
CN106269713A (zh) * 2015-05-19 2017-01-04 四平维克斯换热设备有限公司 板式热交换器的高温固化密封胶垫与板片的分离方法
CN204987974U (zh) * 2015-09-07 2016-01-20 扬州派斯特换热设备有限公司 双管箱可拆全焊接板式换热器
US10302598B2 (en) 2016-10-24 2019-05-28 General Electric Company Corrosion and crack detection for fastener nuts
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CN111457777A (zh) * 2019-01-18 2020-07-28 阿法拉伐股份有限公司 用于板式换热器的外围框架、板式换热器以及换热器组件
RU2763632C1 (ru) * 2020-08-28 2021-12-30 Данфосс А/С Пластинчатый теплообменник
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CN113154914B (zh) * 2021-04-08 2022-05-24 泰州市远望换热设备有限公司 一种节能环保型板式换热器及其工作方法

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Also Published As

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EP2051035A2 (fr) 2009-04-22
SE0702303L (sv) 2009-04-16
SE532197C2 (sv) 2009-11-10
US20090095457A1 (en) 2009-04-16
EP2051035A3 (fr) 2013-01-16

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