EP0494142B1 - Multi-tube heat exchanger - Google Patents

Multi-tube heat exchanger 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
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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
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EP90906207A
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German (de)
French (fr)
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EP0494142A1 (en
Inventor
Gerd Pollak
Gustav Thoenes
Horst Mohrenstecher
Ulrich Premel
Hans-Dieter Marsch
Manfred Severin
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ThyssenKrupp Industrial Solutions AG
Hitachi Zosen Inova Steinmueller GmbH
Original Assignee
Uhde GmbH
L&C Steinmueller GmbH
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Publication of EP0494142A1 publication Critical patent/EP0494142A1/en
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    • 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.

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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

Disclosed is a multi-tube heat exchanger with a container, an inlet space for the heating stream flowing into the heat-exchange tubes, a part-stream tube passing approximately through the centre of the heat exchanger, parallel to the heat-exchange pipes, an outlet space for the heating stream flowing out of the heat-exchange pipes, a discharge space connected to the outlet space by at least one aperture, a control chamber, assciated with the stream exting from the part-stream pipe, which has at least one externally actuated control element disposed in the control chamber. To simplify sealing, the control elements (9; 34, 35, 36) can be rotated about an axis perpendicular to the axis of the part-stream tube by means of a shaft (14; 37) mounted so that is projects radially out through the container wall (1a).

Description

Die Erfindung betrifft einen Rohrbündelwärmetauscher entsprechend dem ersten Teil des Patentanspruchs 1, bzw. des Patentanspruchs 6. Ein derartiges Wärmetausches ist aus der DE-B- 28 46 455 bekannt. Bei diesem Rohrbündelwärmetauscher ist zur Einhaltung gleichbleibender Austrittstemperatur eines der beiden Medien vorgesehen, daß zum Aufbau einer Regeleinrichtung das teilweise oder ganz isolierte Teilstromrohr mit einer Verlängerung versehen ist und der Ausströmöffnung des Teilstromrohres eine Trennwand mit einer auf die Verlängerung ausgerichteten Öffnung gegenübersteht. In der Verlängerung des Teilstromrohres ist ein axial verschiebbarer Hohlzylinder angeordnet, den einen größeren Durchmesser als die Öffnung zeigt. Zum Hinundherverschieben des Hohlzylinders ist eine mit ihm durch Rippen verbundene und aus dem Ausströmraum durch den Abströmraum nach außen axial verschiebbare Stange vorgesehen, die an ihrem in der Verlängerung befindlichen Ende eine Abdeckplatte aufweist, die zum Hohlzylinder hin einen ringförmigen Querschnitt freigibt. In der inneren Endstellung deckt die Abdeckplatte die Kontur des Teilstromrohres dichtend ab. In der äußeren Endstellung der Stange wird der Hohlzylinder im Ausströmraum dichtend gegen die Trennwans gedrückt und in einer axialen Zwischenstellung des als Verschlußstück dienenden Hohlzylinders mit Abdeckplatte ist axial beidseitig je ein ringförmiger Querschnitt gegeben.The invention relates to a shell-and-tube heat exchanger according to the first part of claim 1 or claim 6. Such a heat exchange is known from DE-B-28 46 455. In order to maintain a constant outlet temperature, 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. To move the hollow cylinder back and forth, a rod connected to it by ribs and axially displaceable from the outflow chamber through the outflow chamber is provided, which has a cover plate at its end located in the extension, which releases an annular cross section towards the hollow cylinder. In the inner end position, the cover plate seals the contour of the partial flow pipe. 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.

Durch Verstellen der axialen Stellung des Verschlußstückes wird somit erreicht, daß bei Öffnen des Teilstromrohres, das vom Gas ohne nennenswerten Wärmetausch durchströmt wird, automatisch der Druckverlust über die Wärmeaustauschrohre erhöht wird, um somit eine Zwangsregelung zu erreichen. In der inneren Endstellung des Verschlußstückes wird der gesamte Heißgasstrom durch die Austauschrohre geführt, so daß der gesamte Heißgasstrom am Wärmetausch teilnimmt.By adjusting the axial position of the closure piece it is thus achieved that when the partial flow tube, through which the gas flows without significant heat exchange, the pressure loss through the heat exchange tubes is automatically increased in order to achieve a forced control. In the inner end position of the closure piece, the entire hot gas flow is passed through the exchange tubes, so that the entire hot gas flow takes part in the heat exchange.

Bei dem bekannten Rohrbündelwärmetauscher muß die Stange über eine eine axiale Gleitbewegung zulassende Dichtung nach außen geführt werden. Diese Dichtungen erfordern einen erheblichen Aufwand. Weiterhin erfolgt keine ausreichende Kühlung der Elemente der Regeleinrichtung, die dem heißen Teilgasstrom ausgesetzt sind.
Aus der US-A-31 99 577 ist ein Wärmetauscher bekannt, bei dem das Teilstromrohr in der Nähe des Behältermantels des liegenden Behälters angeordnet ist. Dem Ausströmraum des Austauschrohres und dem Ausströmende des Teilstromrohres ist jeweils eine Regelklappe zugeordnet, die um eine zur Achse des Teilstromrohres mittels einer durch den Behältermantel radial nach außen geführten Welle verschwenkbar ist. Eine Kühlung der Regeleinrichtung die dem heißen Teilstrom ausgesetzt ist, ist nicht vorgesehen. Die Mischung des heißen Teilstroms mit dem aus den Rohren austretenden kühleren Heizflächenstrom erfolgt erst in dem Abströmraum.In the known shell-and-tube heat exchanger, the rod must be guided to the outside via a seal that allows axial sliding movement. These seals require considerable effort. Furthermore, there is insufficient cooling of the elements of the control device which are exposed to the hot partial gas flow.
From US-A-31 99 577 a heat exchanger is known in which the partial flow tube is arranged in the vicinity of the container shell of the lying container. A control flap is assigned to the outflow space of the exchange tube and the outflow end of the partial flow tube, which flap is directed to the axis of the partial flow tube by means of a shaft which is guided radially outward through the container jacket is pivotable. A cooling of the control device which is exposed to the hot partial flow is not provided. The hot partial flow is mixed with the cooler heating surface flow emerging from the pipes only in the outflow space.

Es ist daher die Aufgabe der vorliegenden Erfindung, ausgehend von der DE-B-28 46 455 einen Wärmetauscher zu schaffen, bei dem der Dichtungsaufwand vereinfacht wird und die Elemente der Regeleinrichtung, die dem heißen Teilgasstrom ausgesetzt sind, hinreichend kalt gehalten werden.It is therefore the object of the present invention, starting from DE-B-28 46 455, to provide a heat exchanger in which the sealing effort is simplified and the elements of the control device which are exposed to the hot partial gas flow are kept sufficiently cold.

Diese Aufgabe wird zum einen dadurch gelöst, daß das Regelglied um eine zur Achse des Teilstromrohres senkrechte Achse mittels einer durch den Behältermantel radial nach außen geführten Welle verschwenkbar ist, daß die Regelkammer und ein in ihr verschwenkbar angeordneter, um seine Achse drehbarer Regelzylinder senkrecht zur Achse des Teilstromrohres stromauf der Verbindungsöffnung angeordnet sind, in mindestens einer Kopfplatte der Regelkammer und der zugeordneten Kopfplatte des Regelzylinders Öffnungen vorgesehen sind, die durch Drehen des Regelzylinders in Überdeckung bringbar sind, und daß in der Mantelfläche des Regelzylinders und in der Mantelfläche der Regelkammer Öffnungen vorgesehen sind, die jeweils in einer vorgegebenen Winkelstellung zueinander angeordnet sind.This object is achieved on the one hand in that the 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.

Da das Regelglied durch eine Drehbewegung verstellt wird, braucht die nach außen geführte Welle im Behältermantel nur gegen eine solche Bewegung abgedichtet zu werden.Since the control element is adjusted by a rotary movement, the outwardly guided shaft in the container shell only needs to be sealed against such a movement.

Bei dieser vorzugsweise für niedrige Gastemperaturen geeigneten Ausbildung von Regelkammer und Regelglied wird zumindest ein Teil des kühleren Heizflächenstromes direkt innerhalb des Regelzylinders mit dem Teilstrom in Berührung gebracht, gemischt und somit die Regeleinrichtung kalt gehalten.With this configuration of 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.

Die Lagerung und Abdichtung des Regelzylinders in der zylindrischen Regelkammer erfolgt vorzugsweise mittels Keramikringelementen.The control cylinder is preferably stored and sealed in the cylindrical control chamber by means of ceramic ring elements.

Zur weiteren Verbesserung der Kühlung von Regelkammer und Regelzylinder ist die Regelkammer von einem Kühlgehäuse umgeben, das mit aus den Austauschrohren ausströmenden Medium beaufschlagbar ist.To further improve the cooling of the control chamber and control cylinder, the control chamber is surrounded by a cooling housing which can be acted upon with medium flowing out of the exchange tubes.

In der Verbindungsöffnung ist zur Verbesserung der Mischung des aus der Regelkammer abströmenden Mediums und der Einmischung des aus dem Gehäuse abströmenden Mediums ein sich in Strömungsrichtung aufweitender Abströmtrichter mit innenliegendem Mischkonus angeordnet, wobei in dem Abströmtrichter Einströmöffnungen für das aus dem Kühlgehäuse austretenden Medium vorgesehen sind.In order to improve the mixing of the medium flowing out of the control chamber and the mixing of the medium flowing out of the housing, 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.

Es ist von Vorteil, wenn aus Druckverlustgründen nicht der ganze aus den Wärmeaustauschrohren austretende Heizflächenstrom in den Regelzylinder eintritt. Zu diesem Zwecke ist es von Vorteil, wenn zwischen dem Ausströmraum und dem Abströmraum mindestens eine weitere ungeregelte Zusatzverbindungsöffnung vorgesehen ist.It is advantageous if, for reasons of pressure loss, not all of the heating surface flow emerging from the heat exchange tubes enters the control cylinder. For this purpose, it is advantageous if at least one further unregulated additional connection opening is provided between the outflow space and the outflow space.

Die Aufgabe wird zum anderen für den Einsatz in einem höheren Temperaturniveau, z. B. im Temperaturniveau von 1000 bis 1100 °C, dadurch gelöst, daß das Regelglied um eine zur Achse des Teilstromrohres senkrechte Achse mittels einer durch den Behältermantel radial nach außen geführten Welle verschwenkbar ist, daß der Ausströmraum mit mindestens einem in den Abströmraum vorragenden Abströmkanal verbunden ist, und daß in einer Verlängerung des Teilstromrohres und in dem Abströmkanal jeweils eine auf gemeinsamer Welle sitzende Regelklappe vorgesehen sind, wobei die Regelklappe in der Verlängerung des Teilstromrohres über die gemeinsame Welle gekühlt ist und beide Regelklappen um einen vorgegebenen Winkel versetzt an der Betätigungswelle befestigt sind.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 .

Auch hier braucht die nach außen geführte Welle im Behältermantel nur gegen eine Drehbewegung abgedichtet zu werden.Here, too, the outwardly directed shaft in the container shell only needs to be sealed against rotation.

Durch die vorzugsweise als Zwangskühlung ausgestaltete Kühlung der Regelklappe in der Verlängerung des Teilstromrohres kann die Klappe mit einem heißen Teilstrom beaufschlagt werden.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.

Die Verlängerung des Teilstromrohres kann einstückig mit dem Rohr oder als gesondert gefertigter Rohrabschnitt ausgebildet sein.The extension of the partial flow pipe can be made in one piece with the tube or as a separately manufactured tube section.

Um die Zwangskühlung der Teilstromregelklappe zu verbessern, ist es zweckmäßig, in ihr ein Kühlkanalsystem vorzusehen.In order to improve the forced cooling of the partial flow control flap, it is expedient to provide a cooling duct system in it.

Weiterhin ist es zweckmäßig, die Verlängerung des Teilstromrohres zu kühlen, wenn das gesamte Gewicht der Regeleinrichtung auf der Verlängerung des Teilstromrohres abgestützt ist.Furthermore, it is expedient to cool the extension of the partial flow pipe if the entire weight of the control device is supported on the extension of the partial flow pipe.

Um die Einmischung des Heizflächenstromes in den aus dem Teilstromrohr austretenden Strom zu verbessern, ist es zweckmäßig, wenn sich der Abströmkanal senkrecht zur Erstreckungsrichtung des Teilstromrohres öffnet.In order to improve the mixing of the heating surface flow into the flow emerging from the partial flow pipe, it is expedient if the outflow channel opens perpendicular to the direction of extension of the partial flow pipe.

Wenn die Welle zur Betätigung der Regelklappen aus zwei kuppelbaren Teilstücken besteht, ist es darüberhinaus zweckmäßig, daß zur überbrückung der Kupplung bezüglich der Kühlmittelführung eine Rohrspirale vorgesehen ist.If 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.

Die Erfindung soll nun anhand der beigefügten Figuren näher erläutert werden. Es zeigen

FIG. 1
einen Teilschnitt durch eine erste Ausführungsform des Wärmetauschers,
FIG. 2
einen Schnitt längs der Linie II-II in FIG. 1,
FIG. 3
einen Teilschnitt durch eine zweite Ausführungsform des Wärmetauschers und
FIG. 4
einen Schnitt längs der Linie IV-IV in FIG. 3.
The invention will now be explained in more detail with reference to the accompanying figures. Show it
FIG. 1
a partial section through a first embodiment of the heat exchanger,
FIG. 2nd
a section along the line II-II in FIG. 1,
FIG. 3rd
a partial section through a second embodiment of the heat exchanger and
FIG. 4th
a section along the line IV-IV in FIG. 3rd

In einem Behalter 1 sind Austauschrohre 2 und ein Teilstromrohr 3 angeordnet. Die Rohre erstrecken sich von einem nicht gezeigten und einen Einströmraum begrenzenden Rohrboden zu einem Rohrboden 4. In den Raum zwischen dem Mantel 1a und den beiden Rohrböden wird ein Kühlmedium eingefuhrt und abgezogen.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.

An dem Rohrboden 4 ist ein einen Ausströmraum 5 begrenzendes Gehäuse 6 befestigt. Anstelle des Gehäuses 6 könnte - wie bei der DE-B-28 46 455 - auch nur eine sich parallel zum Rohrboden 4 erstreckende Trennwand vorgesehen sein. Diese Trennwand müßte dann aber die in der FIG. 1 dargestellte Isolierung 7 durchsetzen.A housing 6 delimiting an outflow space 5 is fastened to the tube sheet 4. Instead of 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.

Das Teilstromrohr 3 mit seiner Innenisolierung 3a ist in das Gehäuse 6 hinein verlängert. Mit seinem freien Ende ist eine sich senkrecht zur Achse des Teilstromrohres erstreckende zylindrische Regelkammer 8 mit einer oberen Kopfplatte 8a und einer unteren Kopfplatte 8b befestigt.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.

Im Inneren der Regelkammer ist ein Regelzylinder 9 mit einer oberen Kopfplatte 9a und einer unteren Kopfplatte 9b angeordnet. Die Regelkammer 8 weist an ihrem oberen Ende eine Aufweitung 8c auf, an deren Aufweitungsdurchmesser der Durchmesser der oberen Kopfplatte 9a des Regelzylinders derart angepaßt ist, daß der Regelzylinder sich auf der Regelkammer unter Zwischenschaltung eines Keramikringelementes 10 abstützen kann. Der Durchmesser von Regelkammer 8 und Regelzylinder 9 ist so gewählt, daß durch weitere Keramikringelemente 11 und 12 eine radiale Abstützung des Regelzylinders 9 in der Regelkammer gegeben ist. Durch eine öffnung 13 in der oberen Kopfplatte 8a erstreckt sich eine mit der Kopfplatte 9a verbundene Betätigungswelle 14 radial durch das Gehäuse 6, die Isolierung 7 und den Behältermantel 1a nach außen.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. Through an opening 13 in the upper head plate 8a, 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.

Das Teilstromrohr 3 und die Regelkammer 8 sind über eine öffnung 15 miteinander verbunden und das in die Regelkammer einströmende Medium kann über eine der öffnung 15 gegenüberliegende öffnung 16 aus der Regelkammer austreten. Mit der öffnung 16 der Regelkammer ist ein sich durch eine öffnung 6a in der Stirnwand des Gehäuses 6 erstreckender und sich in Ausströmrichtung des Mediums gesehen aufweitender Abströmtrichter 17 mit innenliegendem und über Stege 18 aufgehängten Mischkonus 19 verbunden. In der Mantelfläches des Regelzylinders 9 sind eine der öffnung 15 zugeordnete öffnung 20 und einer der öffnung 16 zugeordnete öffnung 21 der aus den FIG. 1 und 2 ersichtlichen Geometrie vorgesehen.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. 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. In the lateral surface of the regulating cylinder 9 there are an opening 20 assigned to the opening 15 and an opening 21 assigned to the opening 16 of the opening shown in FIGS. 1 and 2 visible geometry provided.

Weiterhin sind in den Kopfplatten 8a und 8b der Regelkammer drei um 120° versetzt angeordnete Einströmöffnungen 8e und 8f vorgesehen.Furthermore, three inflow openings 8e and 8f, which are offset by 120 °, are provided in the head plates 8a and 8b of the control chamber.

Weiterhin sind in den Kopfplatten 9a und 9b des Regelzylinders ebenfalls drei um 120° versetzte Durchströmöffnungen 9c und 9d in der aus den FIG. 1 und 2 ersichtlichen Stellung relativ zueinander und zu den öffnungen 20 und 21 angeordnet.Furthermore, in the head plates 9a and 9b of the regulating cylinder there are also three flow openings 9c and 9d offset by 120 ° in the one shown in FIG. 1 and 2 visible position relative to each other and to the openings 20 and 21.

Bei der in den FIG. 1 und 2 gezeigten Ausführungsform sind die Kopfplatten 8a und 8b der Regelkammer integrale Bestandteile zweier Gehäusewände 22a und 22b, die sich von der Rohrwand 4 zur Stirnseite des Gehäuses 6 erstrecken. Zusammen mit Wänden 22c und 22d bauen sie ein Kühlgehäuse 22 auf, in das ein Teil des Heizflächenstromes durch öffnungen 23 einströmen kann, um die Außenfläche der Regelkammer 8 zu kuhlen. Aus dem Gehäuse strömt das Kühlgas über in dem Trichter 17 vorgesehene öffnungen 24 ab und wird in den aus dem Regelzylinder austretenden Gasstrom eingemischt, ehe dieser in einen Abströmraum 25 eintritt.When in the FIG. 1 and 2, 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.

Es kann zweckmäßig sein, daß neben den in die Regelkammer eintretenden Teilstrom A₁ des Heizflächenteilstromes A ein anderer Teilstrom A₂ ungeregelt über in der Stirnseite des Gehäuses 6 vorgesehene und vorzugsweise auf die Achse des Rohres 3 zugerichtete Ausströmkanäle 26 in den Abströmraum eintritt.It may be appropriate that in addition to the partial flow A₁ of the heating surface partial flow A entering the control chamber, another partial flow A₂ unregulated in the end face of the Outflow channels 26 provided in housing 6 and preferably directed towards the axis of tube 3 enter the outflow space.

Bei der in den FIG. 1 und 2 gezeigten Stellung strömt der gesamte Teilstrom B aus dem Teilstromrohr durch den Regelzylinder und tritt ohne Zumischung eines Anteiles des Heizflächenstromes A in die Ausströmkammer 25. Bei einer Drehung der Welle 14 um 60° gelangen die öffnungen 9c unter die öffnungen 8e und die öffnungen 9d über die öffnungen 8f, so daß ein Teil A₁ des Heizflächenstromes in das Innere des Regelzylinders 9 einströmen kann. Die öffnung 15 ist durch den Mantel des Regelzylinders 9 verschlossen. Die öffnung 21 deckt einen solchen Umfangswinkel ab, daß auch bei Drehung um 60° das in den Zylinder eingeströmte Medium ungehindert durch den Abströmtrichter 17 austreten kann.When in the FIG. 1 and 2, 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. When the shaft 14 is rotated by 60 °, 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.

In den Zwischenstellungen erfolgt eine entsprechende anteilige Vermischung von Heizflächenstrom A₁ und Teilstrom B. Durch diese Strömungsführung der Ströme erfolgt in dem Innneren des Regelzylinders 9 bereits eine intensive Mischung, die durch den Trichtereinbau 17, 18, 19 unterstützt wird.In the intermediate positions there is a corresponding proportional mixing of the heating surface current A 1 and partial flow B. This flow guidance of the flows results in an intensive mixing inside the regulating cylinder 9, which is supported by the funnel installation 17, 18, 19.

Zur Kühlung von Regelkammer 8, Verlängerung des Teilstromrohres 3 und des Abströmtrichters 17 tritt durch die öffnungen 23 ein Teil A₃ des Heizflächenstromes ein und strömt durch die öffnungen 24 wieder ab. Aus Druckverlustgründen wird ein Teil A₂ des Heizflächenstromes A über die öffnungen 26 ungeregelt abgeführt.For cooling the control chamber 8, extension of the partial flow tube 3 and the outflow funnel 17, a part A 3 of the heating surface flow enters through the openings 23 and flows out through the openings 24 again. For reasons of pressure loss, part A₂ of the heating surface current A is discharged uncontrolled through the openings 26.

Die ganze Baugruppe kann durch ein Mannloch 6b im Gehäuse und ein nur skizziertes Mannloch 1b, 7a im Mantel ein- und ausgebaut werden. Zum Betätigen der Welle 14 ist ein Hebel 14a oder ein nicht dargestellter pneumatischer oder elektrischer Antrieb vorgesehen.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. To actuate the shaft 14 is a lever 14a or a pneumatic or not shown electric drive provided.

Selbstverständlich kann auch eine andere Anordnung der Einströmöffnungen und Durchströmöffnungen in den Kopfplatten von Regelkammer und Regelzylinder vorgesehen sein. Es kommt nur darauf an, daß eine Zwangsregelung zwischen Teilstrom B und Heizflächenstrom A erfolgt, und daß der heiße Teilstrom möglichst schnell mit dem Heizflächenstrom in Berührung kommt, sich mischt und damit das Regelorgan selbst kalt gehalten wird.Of course, a different arrangement of the 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.

Bei der Ausführungsform gemäß den FIG. 3 und 4 ist auf der Abströmseite des Rohrbodens 4 ein ringartiges Gehäuse 30 angeordnet, dessen Inneres den Ausströmraum 31 begrenzt. Von der Stirnseite des Gehäuses 30 erstrecken sich zwei gegenüberliegende Abströmkanäle 32 und 33 in den Abströmraum 25 hinein. Mittig zu dem ringartigen Gehäuse 30 erstreckt sich das ebenfalls mit einer Innenisolierung versehene Teilstromrohr 3.In the embodiment according to FIG. 3 and 4, an 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.

In dem vorderen Ende der Verlängerung des Teilstromrohres 3 ist eine gekühlte kreiszylindrische Regelklappe 34 angeordnet, während in den einen rechteckigen Querschnitt aufweisenden Abströmkanälen 32 und 33 jeweils eine rechteckige ungekühlte Regelklappe 35 bzw. 36 angeordnet ist. Die Regelklappen 35 und 36 sind zur Vereinfachung der Darstellung um 90° verdreht dargestellt, d. h. sie erstrecken sich tatsächlich senkrecht zur Ebene der Regelklappe 34.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.

Die Regelklappen 35 und 36 die aus je zwei Klappenteilen bestehen, sind mit einer gekühlten Welle 37 verschweißt, in die die Regelklappe 34 integriert ist. Die Welle 37 ist radial nach außen durch den Behältermantel 1a hindurchgeführt. Bei der gezeigten Ausführungsform strömt Kühlmittel K durch einen ersten hohlen Wellenabschnitt 37a und tritt von dort in eine eine Kupplung 38 in der Welle überbrückende Rohrspirale 39 ein. Aus dieser Rohrspirale 39 strömt das Kühlmittel in einen Wellenabschnitt 37b und von dort in einen Kanal 34a der Regelklappe 34, das das Kühlmittel zunächst über die gesamte linke Hälfte (in FIG. 3) der Regelklappe führt. Danach strömt das Kühlmittel in einen weiteren Rohrabschnitt 37c der Welle 37 und wird an dem unteren Ende dieses Rohrabschnittes in einen in dem Rohrabschnitt 37c konzentrisch angeordneten weiteren Rohrabschntt 37d eingeleitet. Aus diesem Rohrabschnitt tritt das Kühlmittel in einen Kanal 34b ein, in dem es in der in der FIG. 3 rechten Hälfte der Regelklappe 34 geführt wird. Das Kanalsystem in der Regelklappe 34 kann aus einem zylindrischen Block gefräst werden und dann mit einer aufgeschweißten Platte abgedeckt werden. Es ist jedoch auch möglich, zwischen zwei Kreisscheiben mittels Stegen und einem umlaufenden Mantel ein solches Kanalsystem auszubilden. Das Kühlmittel tritt dann in einen im Abschnitt 37b angeordneten Rohrabschnitt 37f ein, der zusammen mit dem Rohrabschnitt 37b einen Ringraum zur Führung des Kühlmittels nach unten bestimmt. An dessen oberem Ende ist eine öffnung 37e vorgesehen, aus dem das Kühlmittel in den Abströmraum 25 austreten kann. Diese Konstruktion kann dann verwandt werden, wenn z. B. Dampf/Wasser als Kühlmittel verwendet wird und der sich bildende Dampf ohne weiteres in das im Wärmetauscher zu kühlende Produktgas einströmen kann. Falls dieses nicht möglich ist, wird durch einen nicht näher dargestellten weiteren konzentrischen Rohreinsatz das Kühlmittel außerhalb des Behälters geleitet.The control flaps 35 and 36, each consisting of two flap parts, 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. In the embodiment shown, 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. At its upper end there is 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.

Das in den Abströmraum vorragende Ende des Teilstromrohres 3 wird ebenfalls von außen mittels eines Kühlmittels gekühlt, wobei auf der Rohraußenseite eine Kühlschlange 40 mit einer in Richtung auf die Rohrplatte 4 vorlaufenden Wicklung 40a und innerhalb dieser eine auf das freie Ende der Verlängerung zurücklaufenden Wicklung 40b vorgesehen ist. Auch hier kann das Kühlmittel aus der im freien Ende der rücklaufenden Wicklung 40b austreten und über einen um das freie Ende des Teilstromrohres vorgesehenen Ringraum 41 in den Ausströmraum eintreten. Auf diese Weise wird auch der Sitz der Regelklappe besonders gekühlt. Weiterhin ist gemäß der FIG. 3 auf der Innenseite des Rohres eine Keramikbeschichtung 42 aufgetragen, um einen abriebfesten Ventilsitz zu erreichen.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. Again, 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. In this way, the seat of the control flap is particularly cooled. Furthermore, according to FIG. 3, a ceramic coating 42 is applied to the inside of the tube in order to achieve an abrasion-resistant valve seat.

Wie aus den FIG. 3 und 4 ersichtlich ist, öffnen sich die Abströmkanäle 32 und 33 aufeinander zu, so daß der aus ihnen austretende Heizflächenteilstrom AA₁ bzw. AA₂ in den von der Regelklappe 34 durchgelassenen Teilstrom B eingemischt wird. Bei der in der FIG. 3 gezeigten Stellung der Regelklappe 34 sind (unter Berücksichtigung der tatsächlichen Stellung der Klappen 35 und 36) das verlängerte Ende des Teilstromrohres völlig geöffnet und die Strömungsquerschnitte der Abströmkanäle 32 und 33 geschlossen.As shown in FIG. 3 and 4 can be seen, 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. When in the FIG. 3 shown position of the control flap 34 (taking into account the actual position of the flaps 35 and 36), 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.

Auch bei dieser Ausführungsform kann durch die Kühlung der Außenseite des überstehenden Teilstromrohres die gesamte Kraftaufnahme durch dieses Teilstromrohr erfolgen, d. h. die Regeleinrichtung ist im wesentlichen an dem überstehenden Ende des Teilstromrohres aufgehängt. Durch die Anordnung der Kühlkanäle ist nicht nur die Regelklappe 34 zwangsgekühlt, sondern auch die Welle selbst und die Lagerung der Regelklappe. Es ist von Vorteil, wenn das Gehäuse 30 und die Abströmkanäle 32 und 33 abnehmbar sind, da dann der Rohrboden ohne Schwierigkeiten inspiziert werden kann. Selbstverständlich kann auch hier anstelle des angedeuteten Betätigungshebels 37g ein motorischer Antrieb vorgesehen sein. Falls das Kühlmittel für die Kühlung des Überstandes des Teilstromrohres 3 nicht mit in den Produktgasstrom abgeführt werden kann, muß auch eine Rückleitung vom Kühlmittel aus der Doppelwicklung 40a/40b vorgesehen sein.In this embodiment, too, 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. As a result of the arrangement of 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. Of course, 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.

Claims (9)

  1. Tube bundle heat exchanger with a container (1), an inlet space for the heating surface stream flowing into the heat exchanger tubes (2), a part-stream tube (3) passing approximately through the centre of the heat exchanger and in parallel to the heat exchanger tubes, an outlet space (5) for the heating surface stream leaving the heat exchanger tubes, a discharge stream space (25) connected by at least one connection opening to the outflow stream space (5), a cylindrical control chamber (8) associated to the outstream end of the part-stream tube having at least a control element (9) arranged in said control space and being actuable from outside, which control element (9) is rotatable about an axis perpendicular to the axis of the part-stream tube by means of a shaft standing radially outside through the container wall (1a),
    characterized in that the control chamber (8) and a control cylinder (9) arranged rotatably about its axis in the control chamber (8) are arranged perpendicularly to the axis of the part-stream tube upstream the connection opening (6a) in that in at least one head plate (8) of the control chamber (8) and in the head plate (9a) of the control cylinder (9) associated thereto openings (8e; 9c) are provided, which can be brought by rotation of the control cylinder (9) in an overlapping position, and in that in the mantle of the control cylinder (9) and in the mantle of the control chamber (8) openings (20, 21; 15, 16) are provided, which are arranged in a predetermined angle position with respect to each other.
  2. The tube bundle heat exchanger according to claim 1, characterized in that
    the positioning and sealing of the control cylinder (9) in the cylindrical control chamber (8) is achieved by means of ceramic ring elements (10, 11, 12).
  3. The tube bundle heat exchanger according to claim 1 or 2, characterized in that
    the control chamber (9) is surrounded by a cooling casing (22), which is to be biased by a medium (A3) streaming from the heat exchange tubes (2).
  4. The tube exchanger according to at least one of the claims 1 to 3,
    characterized in that
    in the connection opening (6a) a discharge stream funnel (17) widening in stream direction and having an inner mixing conus (19) is provided, while in the discharge stream funnel (17) instream openings (24) for the medium leaving the cooling casing (22) are provided.
  5. The tube bundle heat exchanger according to at least one of the claims 1 to 4,
    characterized in that
    between the outstream space (5) and the discharge stream space (25) at least one uncontrolled additional connection opening (26) is provided.
  6. Tube bundle heat exchanger with a container (1), an inlet space for the heating surface stream flowing into the heat exchanger tube (2) a part-stream tube (3) passing approximately through the centre of the heat exchange and in parallel to the heat exchanger tubes an outstream space (5) for the heating stream leaving the heat exchanger tubes and to be withdrawn from the container, and a control space associated to the outstream end of the part-stream tube and with a control member (34, 35, 36, 37) pivotable about an axis perpendicular to the axis of the part-stream tube by means of a shaft (37) extending radially outwardly through the container mantle, which control member includes a first control flap (34) in the control chamber (3) and at least a further control flap (35; 36) being arranged on a common shaft with the first control flap, but displaced with respect to this flap by a predetermined angle, the further control flap (35; 36) controlling the heating surface stream, characterized in that in the outstream space (5) is connected to at least one discharge conduit (32; 33) extending into a separate discharge stream space (25) and being open on its free end, in which discharge conduit the further control flap (35; 36) is arranged, and in that the first control flap (34) arranged in the extension of the part-stream tube (3) is cooled via the shaft (37) common with the further control flap.
  7. Tube bundle heat exchanger according to claim 6, characterized in that
    in the part-stream control flap (34) a cooling channel system (34a, 34b) is provided.
  8. The tube bundle heat exchanger according to claim 6 or 7, characterized in that
    the discharge stream conduit (32, 33) opens perpendicularly to the direction of extension of the part-stream tube (3).
  9. The tube heat exchanger according to at least one of the claims 6 to 8,
    characterized in that
    the shaft (37) comprises two sections (37a, 37b/37c) adapted to be coupled together and in that for the bridging of the coupling (38) with respect to the cooling medium stream a tube coil (39) is provided.
EP90906207A 1989-04-24 1990-04-23 Multi-tube heat exchanger Expired - Lifetime EP0494142B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3913422 1989-04-24
DE3913422A DE3913422C3 (en) 1989-04-24 1989-04-24 Shell and tube heat exchangers

Publications (2)

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

Family

ID=6379322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90906207A Expired - Lifetime EP0494142B1 (en) 1989-04-24 1990-04-23 Multi-tube heat exchanger

Country Status (3)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005057674B4 (en) * 2005-12-01 2008-05-08 Alstom Technology Ltd. waste heat boiler
CN102713485B (en) 2010-01-21 2016-05-11 国际壳牌研究有限公司 The method of heat exchanger and operation heat exchanger
DE102012007721B4 (en) 2012-04-19 2022-02-24 Thyssenkrupp Industrial Solutions Ag Process gas cooler with lever-controlled process gas cooler flaps
DE102015013517A1 (en) 2015-10-20 2017-04-20 Borsig Gmbh Heat exchanger
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 (en) * 1978-10-23 1980-07-31 Borsig Gmbh, 1000 Berlin Shell and tube heat exchanger with a constant outlet temperature of one of the two media
DE3511037A1 (en) * 1985-03-27 1986-10-09 Voith Turbo Gmbh & Co Kg, 7180 Crailsheim Heat exchanger
DE3828034A1 (en) * 1988-08-18 1990-02-22 Borsig Gmbh HEAT EXCHANGER

Also Published As

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

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