EP0494142B1 - Rohrbündelwärmetauscher - Google Patents

Rohrbündelwärmetauscher Download PDF

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Publication number
EP0494142B1
EP0494142B1 EP90906207A EP90906207A EP0494142B1 EP 0494142 B1 EP0494142 B1 EP 0494142B1 EP 90906207 A EP90906207 A EP 90906207A EP 90906207 A EP90906207 A EP 90906207A EP 0494142 B1 EP0494142 B1 EP 0494142B1
Authority
EP
European Patent Office
Prior art keywords
stream
control
tube
heat exchanger
space
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.)
Expired - Lifetime
Application number
EP90906207A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0494142A1 (de
Inventor
Gerd Pollak
Gustav Thoenes
Horst Mohrenstecher
Ulrich Premel
Hans-Dieter Marsch
Manfred Severin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Industrial Solutions AG
Hitachi Zosen Inova Steinmueller GmbH
Original Assignee
Uhde GmbH
L&C Steinmueller GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Uhde GmbH, L&C Steinmueller GmbH filed Critical Uhde GmbH
Publication of EP0494142A1 publication Critical patent/EP0494142A1/de
Application granted granted Critical
Publication of EP0494142B1 publication Critical patent/EP0494142B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/06—Derivation channels, e.g. bypass

Definitions

  • the invention relates to a shell-and-tube heat exchanger according to the first part of claim 1 or claim 6.
  • a heat exchange is known from DE-B-28 46 455.
  • one of the two media is provided in this tube bundle heat exchanger so that the partially or completely insulated partial flow pipe is provided with an extension in order to build up a control device and the outflow opening of the partial flow pipe is opposed by a partition wall with an opening aligned with the extension.
  • An axially displaceable hollow cylinder, the larger one, is arranged in the extension of the partial flow tube Diameter as the opening shows.
  • a rod connected to it by ribs and axially displaceable from the outflow chamber through the outflow chamber which has a cover plate at its end located in the extension, which releases an annular cross section towards the hollow cylinder.
  • the cover plate In the inner end position, the cover plate seals the contour of the partial flow pipe.
  • the hollow cylinder In the outer end position of the rod, the hollow cylinder is pressed sealingly against the dividing wall in the outflow space, and in an axial intermediate position of the hollow cylinder serving as a closure piece with a cover plate, an annular cross section is provided axially on both sides.
  • control member can be pivoted about an axis perpendicular to the axis of the partial flow pipe by means of a shaft guided radially outwards through the container jacket, in that the control chamber and a control cylinder pivotably arranged in it and rotatable about its axis perpendicular to the axis of the partial flow pipe are arranged upstream of the connection opening, openings are provided in at least one head plate of the control chamber and the associated head plate of the control cylinder, which can be brought into alignment by turning the control cylinder, and that openings are provided in the outer surface of the control cylinder and in the outer surface of the control chamber , which are each arranged in a predetermined angular position to each other.
  • control chamber and control element which is preferably suitable for low gas temperatures
  • at least part of the cooler heating surface flow is brought into contact with the partial flow directly within the control cylinder, mixed, and thus the control device is kept cold.
  • the control cylinder is preferably stored and sealed in the cylindrical control chamber by means of ceramic ring elements.
  • control chamber is surrounded by a cooling housing which can be acted upon with medium flowing out of the exchange tubes.
  • a flow funnel with an internal mixing cone is arranged in the connecting opening, with flow openings for the medium emerging from the cooling housing being provided in the flow funnel.
  • the task is also used for a higher temperature level, e.g. B. in the temperature level of 1000 to 1100 ° C, solved in that the control member is pivotable about an axis perpendicular to the axis of the partial flow pipe by means of a shaft guided radially outwards through the container casing, that the outflow space is connected to at least one outflow channel projecting into the outflow space is and that in an extension of the partial flow pipe and in the outflow channel a control flap seated on a common shaft are provided, the control flap in the extension of the partial flow pipe being cooled via the common shaft and both control flaps being attached to the actuating shaft offset by a predetermined angle .
  • a higher temperature level e.g. B. in the temperature level of 1000 to 1100 ° C
  • the flap Due to the cooling of the control flap in the extension of the partial flow pipe, which is preferably designed as forced cooling, the flap can be acted upon by a hot partial flow.
  • the extension of the partial flow pipe can be made in one piece with the tube or as a separately manufactured tube section.
  • the outflow channel opens perpendicular to the direction of extension of the partial flow pipe.
  • the shaft for actuating the control flaps consists of two detachable sections, it is furthermore expedient that a pipe spiral is provided for bridging the coupling with respect to the coolant guide.
  • Exchange tubes 2 and a partial flow tube 3 are arranged in a container 1.
  • the tubes extend from a tube sheet, not shown and delimiting an inflow space, to a tube sheet 4.
  • a cooling medium is introduced and drawn off into the space between the casing 1a and the two tube sheets.
  • a housing 6 delimiting an outflow space 5 is fastened to the tube sheet 4.
  • the housing 6 - as in DE-B-28 46 455 - only one partition wall extending parallel to the tube sheet 4 could also be provided. This partition would then have to be the one shown in FIG. 1 insulation 7.
  • the partial flow pipe 3 with its inner insulation 3a is extended into the housing 6. With its free end, a cylindrical control chamber 8 extending perpendicular to the axis of the partial flow tube is fastened with an upper head plate 8a and a lower head plate 8b.
  • a control cylinder 9 with an upper head plate 9a and a lower head plate 9b is arranged inside the control chamber.
  • the control chamber 8 has an expansion 8c at its upper end, at the expansion diameter of which the diameter of the upper head plate 9a of the control cylinder is adapted such that the control cylinder can be supported on the control chamber with the interposition of a ceramic ring element 10.
  • the diameter of the control chamber 8 and control cylinder 9 is selected such that radial ceramic support of the control cylinder 9 in the control chamber is provided by additional ceramic ring elements 11 and 12.
  • an actuating shaft 14 connected to the head plate 9a extends radially outward through the housing 6, the insulation 7 and the container jacket 1a.
  • the partial flow pipe 3 and the control chamber 8 are connected to one another via an opening 15 and the medium flowing into the control chamber can be connected to one of the openings 15 Opposite opening 16 emerge from the control chamber.
  • an outflow funnel 17 Connected to the opening 16 of the control chamber is an outflow funnel 17 which extends through an opening 6a in the end wall of the housing 6 and widens in the outflow direction of the medium, with an internal mixing cone 19 which is suspended via webs 18.
  • inflow openings 8e and 8f which are offset by 120 °, are provided in the head plates 8a and 8b of the control chamber.
  • the head plates 8a and 8b of the control chamber are integral components of two housing walls 22a and 22b, which extend from the tube wall 4 to the end face of the housing 6. Together with walls 22c and 22d, they build a cooling housing 22 into which a part of the heating surface flow can flow through openings 23 in order to cool the outer surface of the control chamber 8.
  • the cooling gas flows out of the housing through openings 24 provided in the funnel 17 and is mixed into the gas stream emerging from the control cylinder before it enters an outflow space 25.
  • the entire partial flow B flows out of the partial flow pipe through the regulating cylinder and enters the outflow chamber 25 without admixing a portion of the heating surface flow A.
  • the openings 9c pass under the openings 8e and the openings 9d through the openings 8f, so that part A 1 of the heating surface current can flow into the interior of the regulating cylinder 9.
  • the opening 15 is closed by the jacket of the control cylinder 9.
  • the opening 21 covers such a circumferential angle that, even when rotated by 60 °, the medium flowing into the cylinder can exit through the outflow funnel 17 unhindered.
  • part A 3 of the heating surface flow enters through the openings 23 and flows out through the openings 24 again.
  • part A2 of the heating surface current A is discharged uncontrolled through the openings 26.
  • the entire assembly can be installed and removed through a manhole 6b in the housing and an only sketched manhole 1b, 7a in the jacket.
  • a lever 14a or a pneumatic or not shown electric drive provided to actuate the shaft 14.
  • inflow openings and throughflow openings can also be provided in the top plates of the control chamber and control cylinder. It is only important that a forced control takes place between partial flow B and heating surface flow A, and that the hot partial flow comes into contact with the heating surface flow as quickly as possible, mixes and thus the control element itself is kept cold.
  • annular housing 30 is arranged on the outflow side of the tube sheet 4, the interior of which limits the outflow space 31.
  • Two opposite outflow channels 32 and 33 extend from the end face of the housing 30 into the outflow space 25.
  • the partial flow pipe 3, which is also provided with an inner insulation, extends in the center of the ring-like housing 30.
  • a cooled circular-cylindrical control flap 34 is arranged in the front end of the extension of the partial flow tube 3, while a rectangular uncooled control flap 35 and 36 is arranged in each of the outflow channels 32 and 33 having a rectangular cross section.
  • the control flaps 35 and 36 are shown rotated by 90 ° to simplify the illustration, i. H. they actually extend perpendicular to the plane of the control valve 34.
  • the control flaps 35 and 36 are welded to a cooled shaft 37, in which the control flap 34 is integrated.
  • the shaft 37 is passed radially outward through the container jacket 1a.
  • coolant K flows through a first hollow shaft section 37a and from there enters a coupling 38 in the shaft bridging pipe spiral 39 a. From this spiral tube 39, the coolant flows into a shaft section 37b and from there into a channel 34a of the control flap 34, which initially guides the coolant over the entire left half (in FIG. 3) of the control flap.
  • the coolant then flows into a further pipe section 37c of the shaft 37 and is introduced at the lower end of this pipe section into a further pipe section 37d arranged concentrically in the pipe section 37c. From this pipe section, the coolant enters a channel 34b, in which it is shown in FIG. 3 right half of the control valve 34 is guided.
  • the channel system in the control flap 34 can be milled from a cylindrical block and then covered with a welded-on plate. However, it is also possible to form such a channel system between two circular disks by means of webs and a circumferential jacket.
  • the coolant then enters a pipe section 37f arranged in the section 37b, which together with the pipe section 37b defines an annular space for guiding the coolant downward.
  • an opening 37e from which the coolant can exit into the outflow space 25.
  • This construction can be used when e.g. B. steam / water is used as a coolant and the steam that forms can easily flow into the product gas to be cooled in the heat exchanger. If this is not possible, the coolant is passed outside the container through a further concentric tube insert, not shown.
  • the end of the partial flow tube 3 protruding into the outflow space is also cooled from the outside by means of a coolant, a cooling coil 40 having a winding 40a leading in the direction of the tube plate 4 and a winding 40b returning to the free end of the extension being provided on the outside of the tube is.
  • the coolant can come from the free end emerge from the return winding 40b and enter the outflow space via an annular space 41 provided around the free end of the partial flow tube.
  • the seat of the control flap is particularly cooled.
  • a ceramic coating 42 is applied to the inside of the tube in order to achieve an abrasion-resistant valve seat.
  • the outflow channels 32 and 33 open towards one another, so that the heating surface partial flow AA 1 or AA 2 emerging from them is mixed into the partial flow B let through by the control flap 34.
  • the extended end of the partial flow pipe is completely open and the flow cross sections of the outflow channels 32 and 33 are closed.
  • the entire force can be absorbed by this partial flow pipe by cooling the outside of the projecting partial flow pipe, i. H. the control device is essentially suspended from the projecting end of the partial flow pipe.
  • the cooling channels not only is the control flap 34 cooled, but also the shaft itself and the mounting of the control flap. It is advantageous if the housing 30 and the outflow channels 32 and 33 are removable, since the tube sheet can then be inspected without difficulty.
  • a motor drive can also be provided here instead of the indicated actuating lever 37g. If the coolant for cooling the supernatant of the partial flow tube 3 cannot be discharged into the product gas stream, a return line from the coolant from the double winding 40a / 40b must also be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP90906207A 1989-04-24 1990-04-23 Rohrbündelwärmetauscher Expired - Lifetime EP0494142B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3913422A DE3913422C3 (de) 1989-04-24 1989-04-24 Rohrbündelwärmetauscher
DE3913422 1989-04-24

Publications (2)

Publication Number Publication Date
EP0494142A1 EP0494142A1 (de) 1992-07-15
EP0494142B1 true EP0494142B1 (de) 1994-01-19

Family

ID=6379322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90906207A Expired - Lifetime EP0494142B1 (de) 1989-04-24 1990-04-23 Rohrbündelwärmetauscher

Country Status (3)

Country Link
EP (1) EP0494142B1 (enrdf_load_stackoverflow)
DE (2) DE3913422C3 (enrdf_load_stackoverflow)
WO (1) WO1990012993A1 (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005057674B4 (de) 2005-12-01 2008-05-08 Alstom Technology Ltd. Abhitzekessel
JP2013517365A (ja) 2010-01-21 2013-05-16 シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイ 熱交換器および熱交換器を操作する方法
DE102012007721B4 (de) 2012-04-19 2022-02-24 Thyssenkrupp Industrial Solutions Ag Prozessgaskühler mit hebelgesteuerten Prozessgaskühlerklappen
DE102015013517A1 (de) † 2015-10-20 2017-04-20 Borsig Gmbh Wärmeübertrager
EP3407001A1 (en) 2017-05-26 2018-11-28 ALFA LAVAL OLMI S.p.A. Shell-and-tube equipment with bypass
GB2601773B (en) * 2020-12-09 2023-03-29 Helical Energy Ltd A heat exchange unit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498637A (en) * 1945-10-31 1950-02-28 Thomas J Bay Engine cooling apparatus
US3199577A (en) * 1962-06-14 1965-08-10 Foster Wheeler Corp Heat exchanger control scheme
DE2846455C2 (de) * 1978-10-23 1980-07-31 Borsig Gmbh, 1000 Berlin Rohrbündel-Wärmetauscher mit gleichbleibender Austrittstemperatur eines der beiden Medien
DE3511037A1 (de) * 1985-03-27 1986-10-09 Voith Turbo Gmbh & Co Kg, 7180 Crailsheim Waermetauscher
DE3828034A1 (de) * 1988-08-18 1990-02-22 Borsig Gmbh Waermetauscher

Also Published As

Publication number Publication date
EP0494142A1 (de) 1992-07-15
DE3913422C2 (enrdf_load_stackoverflow) 1991-05-08
DE3913422A1 (de) 1990-10-25
WO1990012993A1 (de) 1990-11-01
DE59004367D1 (de) 1994-03-03
DE3913422C3 (de) 1994-04-14

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