EP0627607B1 - Steam-heated heat exchanger - Google Patents
Steam-heated heat exchanger Download PDFInfo
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- EP0627607B1 EP0627607B1 EP94105670A EP94105670A EP0627607B1 EP 0627607 B1 EP0627607 B1 EP 0627607B1 EP 94105670 A EP94105670 A EP 94105670A EP 94105670 A EP94105670 A EP 94105670A EP 0627607 B1 EP0627607 B1 EP 0627607B1
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- Prior art keywords
- tubes
- heating
- feed
- conduit
- heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
- F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
Definitions
- the invention relates to a steam-heated Heat exchanger, especially for the condensate side Regulation of heat transfer, with a one steam-heated heating system, by one secondary Heating medium flows through the housing, the upstream lying end to a return and downstream End of a flow for the secondary heating medium is connectable, and with heating steam in parallel and in Flow through countercurrent to the secondary heating medium Heating pipes connected to one at the upstream end Steam flow and at the downstream end to one Condensate return are connected, the housing from a series of parallel from the secondary heating medium flowed through jacket tubes, in each of which one of the Heating pipes is arranged, the flow side through a Jacket pipes common secondary flow line for the secondary heating medium and its wall through are led outside to the common steam flow.
- the jacket pipes have a first Embodiment radially from its end protruding pipe socket through which the secondary Heating medium can flow into or out of the jacket tube.
- the front sides of the casing pipes are on the flow side fluid-tight against the steam supply line sealed.
- the Pipe socket expanded to connecting flanges, which at mutually coupled jacket tubes one with these form an integral secondary flow line.
- the Flanges are again at a distance from the end of the Jacket pipes arranged.
- the jacket pipes are on the front also fluid-tight in this embodiment sealed and the outflow of the secondary heating medium takes place in the radial direction.
- a cooling of the primary Heating medium through the secondary heating medium takes place only if the primary heating medium in the heating pipe is at a distance areas from the end of the casing tube reached be washed by the secondary heating medium.
- the heating pipes are all in one housing arranged and with their ends on two tube plates connected, of which the flow tube in the upper housing part arranged laterally in the housing wall is, while the condensate-side tube plate is the housing closes at the bottom and from a condensate collector separates.
- the heating pipes are helically coiled, the slope of the turns from top to bottom so that the heat-exchanging surface towards Steam entry to the condensate outlet increases accordingly.
- Such heat exchangers have become common in practice proven; the heat exchanger is easy to control and there are none at all steam pressures Sounds. However, the manufacture of one Heat exchanger very complex and expensive.
- the advantage achieved by the invention initially exists in that the heating pipes are led through the flow line are because it ensures that the heating pipes on Steam enters through the jacket pipes and the Secondary heating medium flowing through the flow line very much to be cooled well and heat pockets from the current of the secondary heating medium is not detected and flushed through, cannot arise. This ensures that in Heat exchanger no bubbling, crackling or cracking noises can result from overheating on the secondary side.
- the heating pipes in the area the mouth of the casing tube in the secondary Flow line and within the secondary flow line themselves have the smallest possible heat exchange surface, in particular are smooth-walled. You therefore give in this Area less heat and this heat can be from which the Secondary heating medium flowing through the flow line can be easily removed.
- the narrowed mouth area of the casing tube from a short axial connecting piece formed by the casing tube merges with an outwardly convex shell.
- the arrangement be such that parallel to the secondary flow line on their of the Jacket side facing away from a steam flow line to which the runs across the secondary Flow pipe connected through heating pipes connected are.
- the heat exchanging surface of the in the Flow pipe trending heating pipe sections is then optimally small and the heat given off to the secondary Heating medium in the flow pipe correspondingly low.
- the structure of the invention Heat exchanger has the further advantage that the secondary Flow and return line just like that Steam supply line and the condensate manifold either with one of their two or with theirs both ends of the line to the flow and return for the secondary heating medium or to the common steam flow and the common condensate return can be connected.
- the one with the secondary supply and return lines, the Steam supply line and the condensate manifold prefabricated and pre-assembled heat exchangers very versatile connection options to the primary-side energy supply system and that secondary-side energy consumer system.
- FIG 1 shows a heat exchanger according to the invention in Longitudinal section, Figure 2 in plan view.
- each casing tube 1 is at the upstream end 1 ′′ a return, not shown, and downstream not lying end 1 'to yourself shown advance of the secondary Energy consumer system for the secondary heating medium in way to be described further below connected.
- Heating pipe 2 for passing the heating steam or Condensate, with all heating pipes 2 from heating steam in parallel and flows in countercurrent to the secondary heating medium will.
- the heating pipes 2 are at the upstream end 2 '' to a steam supply, which is itself not shown and at the downstream end 2 'to a likewise in the Drawing not shown condensate return primary power supply system connected.
- the jacket tubes 1 are in the region of their mouth 4 in the secondary flow line 3 narrowed in cross section, wherein this narrowed mouth area in detail by one short axial connector 7 and in the transition from this connecting piece 7 to the cylindrical part of the Jacket tube 1 from an outwardly convex Shell section 8 formed.
- This narrowing leads to an increase in the flow rate of the secondary Heating medium and thus for a good cooling of the Mouth area and the cross section of the flow line 3 penetrating sections 6 of the heating tubes 2.
- the heating tubes 2 are then in their Mouth area of the jacket tubes 1 straight and smooth-walled section 6 helical coiled, with the outer coil diameter equal to that Inner diameter of the casing tube 1.
- a displacer 9 which is designed in the exemplary embodiment as a tube that on return-side end 1 '' of the casing tube 1 on the end face closed, at the flow end 1 'but at the front is open and that prevents the flow of the secondary heating medium through the otherwise free interior the coiled tubing takes place.
- they are Heating pipes 2 in the coiled area with finned pipes closely coiled tube coils.
- the casing tubes 1 are through one side piece 10 attached to one next to each Jacket tubes 1 running common secondary Return line 11 for the secondary heating medium connected.
- this return line 11 takes place Connection of all jacket pipes 1 to the common return of the cooled secondary heating medium from the secondary Energy consumer system, this connection optional at one of the two ends of the return line 11 or both ends of the line can be done. Also the connection of the secondary lead of the energy consumer system takes place over the secondary pipes common to all jacket pipes Flow line 3, the connection in turn to one of the both ends of this flow line 3 or on both of them Ends can be made simultaneously.
- the condensate ends 2 'of the heating tubes 2 are each axially through the end wall of its casing tube 1 passed through and with a common Condensate manifold 12 connected in detail not shown in the figure to the Condensate return from the primary energy supply system is to be connected.
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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)
- Physical Or Chemical Processes And Apparatus (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Hydrogen, Water And Hydrids (AREA)
Abstract
Description
Die Erfindung betrifft einen dampfbeheizten Wärmetauscher, insbesondere für kondensatseitige Regelung der Wärmeübertragung, mit einem ein dampfbeheiztes Heizsystem aufweisenden, von einem sekundären Heizmedium durchströmten Gehäuse, das am stromauf liegenden Ende an einen Rücklauf und am stromab liegenden Ende an einen Vorlauf für das sekundäre Heizmedium anschließbar ist, und mit vom Heizdampf parallel und im Gegenstrom zum sekundären Heizmedium durchströmten Heizrohren, die am stromauf liegenden Ende an einen Dampfvorlauf und am stromab liegenden Ende an einen Kondensatrücklauf angeschlossen sind, wobei das Gehäuse aus einer Reihe von vom sekundären Heizmedium parallel durchströmten Mantelrohren besteht, in denen je eines der Heizrohre angeordnet ist, die vorlaufseitig durch eine den Mantelrohren gemeinsame sekundäre Vorlaufleitung für das sekundäre Heizmedium und deren Wandung hindurch nach außen zum gemeinsamen Dampfvorlauf geführt sind.The invention relates to a steam-heated Heat exchanger, especially for the condensate side Regulation of heat transfer, with a one steam-heated heating system, by one secondary Heating medium flows through the housing, the upstream lying end to a return and downstream End of a flow for the secondary heating medium is connectable, and with heating steam in parallel and in Flow through countercurrent to the secondary heating medium Heating pipes connected to one at the upstream end Steam flow and at the downstream end to one Condensate return are connected, the housing from a series of parallel from the secondary heating medium flowed through jacket tubes, in each of which one of the Heating pipes is arranged, the flow side through a Jacket pipes common secondary flow line for the secondary heating medium and its wall through are led outside to the common steam flow.
Die DE 33 10 375 A1 zeigt einen derartigen Wärmeübertrager, bei dem das primäre Heizmedium durch Feuerungsabgase, das sekundäre Heizmedium durch Wasser gebildet ist. Die Mantelrohre weisen nach einer ersten Ausführungsform mit Abstand von ihrem Ende radial abstehende Rohrstutzen auf, durch die das sekundäre Heizmedium in das Mantelrohr ein- bzw. abströmen kann. Die Stirnseiten der Mantelrohre sind vorlaufseitig strömungsmitteldicht gegenüber der Dampfvorlaufleitung abgedichet. Nach einer zweiten Ausführungsform sind die Rohrstutzen zu Anschlußflansche erweitert, die bei miteinander gekoppelten Mantelrohren eine mit diesen integrale sekundäre Vorlaufleitung bilden. Die Anschlußflansche sind wiederum mit Abstand vom Ende der Mantelrohre angeordnet. Stirnseitig sind die Mantelrohre auch in dieser Ausführungsform strömungsmitteldicht abgedichtet und die Abströmung des sekundären Heizmediums erfolgt in radialer Richtung. Eine Kühlung des primären Heizmediums durch das sekundäre Heizmedium erfolgt erst, wenn das primäre Heizmedium im Heizrohr die mit Abstand vom Ende des Mantelrohres gelegenen Bereiche erreicht, die vom sekundären Heizmedium umspült werden.DE 33 10 375 A1 shows one of these Heat exchanger in which the primary heating medium passes through Combustion gases, the secondary heating medium through water is formed. The jacket pipes have a first Embodiment radially from its end protruding pipe socket through which the secondary Heating medium can flow into or out of the jacket tube. The The front sides of the casing pipes are on the flow side fluid-tight against the steam supply line sealed. According to a second embodiment, the Pipe socket expanded to connecting flanges, which at mutually coupled jacket tubes one with these form an integral secondary flow line. The Flanges are again at a distance from the end of the Jacket pipes arranged. The jacket pipes are on the front also fluid-tight in this embodiment sealed and the outflow of the secondary heating medium takes place in the radial direction. A cooling of the primary Heating medium through the secondary heating medium takes place only if the primary heating medium in the heating pipe is at a distance areas from the end of the casing tube reached be washed by the secondary heating medium.
Bei einem aus der DE 11 19 883 bekannten Wärmetauscher sind die Heizrohre alle zusammen in einem einzigen Gehäuse angeordnet und mit ihren Enden an zwei Rohrböden angeschlossen, von welchen der vorlaufseitige Rohrboden im oberen Gehäuseteil seitlich in der Gehäusewand angeordnet ist, während der kondensatseitige Rohrboden das Gehäuse nach unten abschließt und von einem Kondensatsammelraum trennt. Die Heizrohre sind schraubenförmig gewendelt, wobei die Steigung der Windungen von oben nach unten abund damit die wärmetauschende Oberfläche in Richtung vom Dampfeintritt zum Kondensataustritt entsprechend zunimmt. Derartige Wärmetauscher haben sich in der Praxis vielfach bewährt; der Wärmetauscher läßt sich hervorragend regeln und es entstehen bei allen Dampfdrücken keinerlei Geräusche. Jedoch ist die Fertigung eines solchen Wärmetauschers sehr aufwendig und teuer.In a heat exchanger known from DE 11 19 883 the heating pipes are all in one housing arranged and with their ends on two tube plates connected, of which the flow tube in the upper housing part arranged laterally in the housing wall is, while the condensate-side tube plate is the housing closes at the bottom and from a condensate collector separates. The heating pipes are helically coiled, the slope of the turns from top to bottom so that the heat-exchanging surface towards Steam entry to the condensate outlet increases accordingly. Such heat exchangers have become common in practice proven; the heat exchanger is easy to control and there are none at all steam pressures Sounds. However, the manufacture of one Heat exchanger very complex and expensive.
Der Erfindung liegt die Aufgabe zugrunde, einen Wärmetauscher der eingangs genannten Art so auszubilden, daß er unter Beibehaltung der guten technischen Eigenschaften, insbes. Regelbarkeit und Geräuschfreiheit, einen einfachen Aufbau besitzt und daher sehr leicht und kostensparend gefertigt werden kann.The invention has for its object a To design heat exchangers of the type mentioned at the beginning that he while maintaining good technical Properties, in particular controllability and noiselessness, has a simple structure and therefore very light and can be manufactured cost-effectively.
Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß die Mantelrohre mit ihrem vorlaufseitigen, an der Stirnseite offenen Rohrende in der sekundären Vorlaufleitung münden, daß die Heizrohre vorlaufseitig durch die an der Stirnseite ausgebildete Mündung des jeweiligen Mantelrohres hindurch in die sekundäre Vorlaufleitung hinein geführt sind, und daß die Mantelrohre im Bereich ihrer Mündung in die sekundäre Vorlaufleitung im Querschnitt verengt sind.This object is achieved according to the invention in that the jacket pipes with their upstream, on the Front end of open pipe in the secondary Flow line open that the heating pipes on the flow side through the mouth of the respective casing tube into the secondary Lead pipe are led into it, and that the Jacket pipes in the area of their mouth in the secondary Flow line are narrowed in cross section.
Der durch die Erfindung erreichte Vorteil besteht zunächst darin, daß die Heizrohre durch die Vorlaufleitung geführt sind, weil dadurch gewährleistet ist, daß die Heizrohre am Dampfeintritt durch das aus den Mantelrohren aus- und die Vorlaufleitung durchströmende sekundäre Heizmedium sehr gut gekühlt werden und Wärmenester, die vom Strom des sekundären Heizmediums nicht erfaßt und durchspült werden, nicht entstehen können. Damit ist sichergestellt, daß im Wärmetauscher keine Brodel-, Knister- oder Knallgeräusche durch sekundärseitige Überhitzungen entstehen können.The advantage achieved by the invention initially exists in that the heating pipes are led through the flow line are because it ensures that the heating pipes on Steam enters through the jacket pipes and the Secondary heating medium flowing through the flow line very much to be cooled well and heat pockets from the current of the secondary heating medium is not detected and flushed through, cannot arise. This ensures that in Heat exchanger no bubbling, crackling or cracking noises can result from overheating on the secondary side.
Es empfiehlt sich daher auch, daß die Heizrohre im Bereich der Mündung des Mantelrohres in die sekundäre Vorlaufleitung und innerhalb der sekundären Vorlaufleitung selbst eine möglichst geringe Wärmetauschfläche aufweisen, insbes. glattwandig sind. Sie geben daher in diesem Bereich weniger Wärme ab und diese Wärme kann von dem die Vorlaufleitung durchströmenden sekundären Heizmedium problemlos abgeführt werden.It is therefore also recommended that the heating pipes in the area the mouth of the casing tube in the secondary Flow line and within the secondary flow line themselves have the smallest possible heat exchange surface, in particular are smooth-walled. You therefore give in this Area less heat and this heat can be from which the Secondary heating medium flowing through the flow line can be easily removed.
Um in einfacher Weise die Querschnittsverengung der Mantelrohre im Bereich ihrer Mündung in die sekundäre Vorlaufleitung zu erreichen, ist zweckmäßigerweise der verengte Mündungsbereich des Mantelrohres von einem kurzen axialen Verbindungsstutzen gebildet, den das Mantelrohr mit einer nach außen konvex gewölbten Schale übergeht.To reduce the cross section of the Jacket pipes in the area of their mouth in the secondary Reaching the flow line is expediently the narrowed mouth area of the casing tube from a short axial connecting piece formed by the casing tube merges with an outwardly convex shell.
Weiter empfiehlt es sich, die Anordnung so zu treffen, daß parallel zur sekundären Vorlaufleitung auf ihrer von den Mantelrohren abgewandten Seite eine Dampfvorlaufleitung verläuft, an welche die quer durch die sekundäre Vorlaufleitung hindurch geführten Heizrohre angeschlossen sind. Die wärmetauschende Oberfläche der in der Vorlaufleitung verlaufenden Heizrohrabschnitte ist dann optimal klein und die Wärmeabgabe an das sekundäre Heizmedium im Vorlaufrohr entsprechend niedrig. It is also recommended that the arrangement be such that parallel to the secondary flow line on their of the Jacket side facing away from a steam flow line to which the runs across the secondary Flow pipe connected through heating pipes connected are. The heat exchanging surface of the in the Flow pipe trending heating pipe sections is then optimally small and the heat given off to the secondary Heating medium in the flow pipe correspondingly low.
Im übrigen sind die Heizrohre in den Mantelrohren mit Abstand von deren Mündung in die sekundäre Vorlaufleitung schraubenförmig gewendelt, wobei der äußere Wendeldurchmesser gleich dem Innendurchmesser des Mantelrohres ist und im Wendelinnenraum ein Verdrängerkörper angeordnet ist, der verhindert, daß das sekundäre Heizmedium die Mantelrohre im wesentlichen im lichten Wendelquerschnitt der Heizrohre durchströmen kann, was für den Wärmeübergang nachteilig wäre. Zweckmäßigerweise sind die Heizrohre im gewendelten Bereich als Rippenrohre mit dicht aneinander liegenden Rohrwendeln ausgebildet. Otherwise, the heating pipes are in the jacket pipes Distance from their mouth in the secondary flow line helically coiled, the outer Helix diameter equal to the inside diameter of the Jacket tube is and in the interior of the spiral Displacement body is arranged, which prevents that secondary heating medium in the jacket pipes essentially can flow through the clear spiral cross section of the heating pipes, which would be disadvantageous for the heat transfer. The heating pipes are expediently coiled Area as finned tubes with close to each other Pipe coils formed.
Eine weitere Ausbildung der Erfindung geht dahin, daß die Mantelrohre am stromauf liegenden Ende durch je einen seitlich angesetzten Stutzen an eine neben den Mantelrohren verlaufende gemeinsame sekundäre Rücklaufleitung für das sekundäre Heizmedium angeschlossen sind, und daß die kondensatseitigen Enden der Heizrohre jeweils axial durch die Stirnwand ihres Mantelrohres hindurchgeführt und mit einer gemeinsamen Kondensatsammelleitung verbunden sind. Dies ermöglicht auch am rücklauf- bzw. kondensatseitigen Ende der Mantel- und Heizrohre eine einfache und kostensparende Vormontage. Im übrigen bietet der Aufbau des erfindungsgemäßen Wärmetauschers den weiteren Vorteil, daß die sekundäre Vor- und Rücklaufleitung ebenso wie die Dampfvorlaufleitung und die Kondensatsammelleitung wahlweise mit jeweils einem ihrer beiden oder mit ihren beiden Leitungsenden an den Vor- und Rücklauf für das sekundäre Heizmedium bzw. an den gemeinsamen Dampfvorlauf und den gemeinsamen Kondensatrücklauf anschließbar sind. Der mit den sekundären Vor- und Rücklaufleitungen, der Dampfvorlaufleitung und der Kondensatsammelleitung vorgefertigte und vormontierte Wärmetauscher besitzt daher sehr vielseitige Anschlußmöglichkeiten an das primärseitige Energieversorgungssystem und das sekundärseitige Energieverbrauchersystem.Another education the invention is that the Jacket pipes at the upstream end through one each sockets attached to the side next to the Jacketed common secondary Return line for the secondary heating medium connected and that the condensate ends of the heating tubes each axially through the end wall of its casing tube passed through and with a common Condensate manifold are connected. this makes possible also at the return or condensate end of the jacket and Heating pipes a simple and cost-saving pre-assembly. Otherwise, the structure of the invention Heat exchanger has the further advantage that the secondary Flow and return line just like that Steam supply line and the condensate manifold either with one of their two or with theirs both ends of the line to the flow and return for the secondary heating medium or to the common steam flow and the common condensate return can be connected. The one with the secondary supply and return lines, the Steam supply line and the condensate manifold prefabricated and pre-assembled heat exchangers very versatile connection options to the primary-side energy supply system and that secondary-side energy consumer system.
Im folgenden wird die Erfindung an einem in der Zeichnung dargestellten Ausführungsbeispiel erläutertert; die Figur 1 zeigt einen Wärmetauscher nach der Erfindung im Längsschnitt, die Figur 2 in der Draufsicht. In the following the invention on one in the drawing illustrated embodiment explained; The figure 1 shows a heat exchanger according to the invention in Longitudinal section, Figure 2 in plan view.
In der Zeichnung ist ein dampfbeheizter Wärmeübertrager
für kondensatseitige Regelung der Wärmeübertragung
dargestellt. Er besitzt von einem sekundären Heizmedium,
insbes. Wasser, parallel durchströmte Mantelrohre 1, von
welchen im Ausführungsbeispiel nur zwei vorhanden sind,
die aber je nach gewünschter Wärmeübertragungsleistung
auch in wesentlich größerer Anzahl vorgesehen sein können.
Jedes Mantelrohr 1 ist am stromauf liegenden Ende 1'' an
einen selbst nicht dargestellten Rücklauf und am stromab
liegenden Ende 1' an einen ebenfalls selbst nicht
dargestellten Vorlauf des sekundären
Energieverbrauchersystems für das sekundäre Heizmedium in
weiter unten noch näher zu beschreibender Weise
angeschlossen. In jedem Mantelrohr 1 befindet sich ein
Heizrohr 2 zum Durchleiten des Heizdampfes bzw. des
Kondensates, wobei alle Heizrohre 2 vom Heizdampf parallel
und im Gegenstrom zum sekundären Heizmedium durchströmt
werden. Die Heizrohre 2 sind am stromauf liegenden Ende 2''
an einen wiederum selbst nicht dargestellten Dampfvorlauf
und am stromab liegenden Ende 2' an einen ebenfalls in der
Zeichnung nicht dargestellten Kondensatrücklauf des
primären Energieversorgungssystems angeschlossen.In the drawing is a steam heated heat exchanger
for condensate control of heat transfer
shown. It has a secondary heating medium,
esp. Water, parallel flow through
Im einzelnen münden die Mantelrohre 1 mit ihrem
vorlaufseitigen Rohrende 1' in einer gemeinsamen
sekundären Vorlaufleitung 3 für das sekundäre Heizmedium.
Die Heizrohre 2 sind vorlaufseitig durch die Mündung 4 des
jeweiligen Mantelrohres 1 hindurch in die sekundäre
Vorlaufleitung 3 hinein und durch deren Wandung hindurch
nach außen zu einer gemeinsamen Dampfvorlaufleitung 5
geführt, die parallel zur sekundären Vorlaufleitung 3 auf
deren von den Mantelrohren 1 abgewandten Seite verläuft.
Die Heizrohre 2 sind in ihrem im Bereich der Mündung 4
ihres jeweiligen Mantelrohres 1 und innerhalb der
sekundären Vorlaufleitung 3 selbst verlaufenden
Abschnitt 6 mit möglichst geringer Wärmetauschfläche,
nämlich im Ausführungsbeispiel glattwandig ausgebildet.
Die Mantelrohre 1 sind im Bereich ihrer Mündung 4 in die
sekundäre Vorlaufleitung 3 im Querschnitt verengt, wobei
dieser verengte Mündungsbereich im einzelnen von einem
kurzen axialen Verbindungsstutzen 7 und im Übergang von
diesem Verbindungsstutzen 7 zum zylindrischen Teil des
Mantelrohrs 1 hin von einem nach außen konvex gewölbten
Schalenabschnitt 8 gebildet. Diese Verengung führt zu
einer Erhöhung der Strömungsgeschwindigkeit des sekundären
Heizmediums und damit zu einer guten Kühlung der den
Mündungsbereich und den Querschnitt der Vorlaufleitung 3
durchsetzenden Abschnitte 6 der Heizrohre 2.In detail, the
Die Heizrohre 2 sind anschließend an ihren im
Mündungsbereich der Mantelrohre 1 gerade verlaufenden und
glattwandig ausgebildeten Abschnitt 6 schraubenförmig
gewendelt, wobei der äußere Wendeldurchmesser gleich dem
Innendurchmesser des Mantelrohres 1 ist. Im
Wendelinnenraum befindet sich ein Verdrängerkörper 9, der
im Ausführungsbeispiel als Rohr ausgebildet ist, das am
rücklaufseitigen Ende 1'' des Mantelrohres 1 stirnseitig
geschlossen, am vorlaufseitigen Ende 1' aber stirnseitig
offen ist und das verhindert, daß die Strömung des
sekundären Heizmediums durch den sonst freien Innenraum
der Rohrwendel hindurch erfolgt. Außerdem sind die
Heizrohre 2 im gewendelten Bereich als Rippenrohre mit
dicht aneinander liegenden Rohrwendeln ausgebildet. The
Am stromauf liegenden Ende 1'' sind die Mantelrohre 1 durch
je einen seitlich angesetzten Stutzen 10 an eine neben den
Mantelrohren 1 verlaufende gemeinsame sekundäre
Rücklaufleitung 11 für das sekundäre Heizmedium
angeschlossen. Mit dieser Rücklaufleitung 11 erfolgt der
Anschluß aller Mantelrohre 1 an den gemeinsamen Rücklauf
des gekühlten sekundären Heizmediums aus dem sekundären
Energieverbrauchersystem, wobei dieser Anschluß wahlweise
an einem der beiden Enden der Rücklaufleitung 11 oder an
beiden Leitungsenden erfolgen kann. Auch der Anschluß des
sekundären Vorlaufs des Energieverbrauchersystems erfolgt
über die allen Mantelrohren 1 gemeinsame sekundäre
Vorlaufleitung 3, wobei der Anschluß wiederum an einem der
beiden Enden dieser Vorlaufleitung 3 oder an ihren beiden
Enden gleichzeitig vorgenommen werden kann. Die
kondensatseitigen Enden 2' der Heizrohre 2 sind jeweils
axial durch die Stirnwand ihres Mantelrohres 1
hindurchgeführt und mit einer gemeinsamen
Kondensatsammelleitung 12 verbunden, die in im einzelnen
in der Figur nicht dargestellter Weise an den
Kondensatrücklauf des primären Energieversorgungssystems
anzuschließen ist.At the
Claims (8)
- A vapour-heated heat exchanger, in particular for regulation at the condensate side of the heat transmission, comprising a housing which has a vapour-heated heating system and through which a secondary heating medium flows and which can be connected at the upstream end to a return for the secondary heating medium and at the downstream end to a feed for the secondary heating medium, and heating tubes (2) through which the heating vapour flows parallel and in counter-flow relationship to the secondary heating medium and which are connected at the upstream end (2") to a vapour feed and at the downstream end (2') to a condensate return, wherein the housing comprises a series of casing tubes (1) through which the secondary heating medium flows in parallel relationship and in each of which is arranged a respective one of the heating tubes (2) which at the feed end are guided outwardly to the common vapour feed through a secondary feed conduit (3) which is common to the casing tubes (1), for the secondary heating medium, and the wall thereof, characterised in that the casing tubes (1) open in the secondary feed conduit (3) with their tube end (1') at the feed end, which is open at the end thereof, that the heating tubes (2) are guided at the feed end into the secondary feed conduit (3) through the mouth opening (4), which is formed at the end, of the respective casing tube (1), and that the casing tubes (1) are reduced in cross-section in the region of their mouth opening (4) into the secondary feed conduit (3).
- A heat exchanger according to claim 1 characterised in that the heating tubes (2) have a heat exchange surface area which is as small as possible and in particular are smooth-walled in the region of the mouth opening (4) of the casing tube (1), into the secondary feed conduit (3) and within the secondary feed conduit (3) itself.
- A heat exchanger according to claim 1 or claim 2 characterised in that the reduced mouth opening region of the casing tube (1) is formed by a short axial connecting portion (7) into which the casing tube (1) merges with an outwardly convexly curved shell portion (8).
- A heat exchanger according to one of claims 1 to 3 characterised in that extending in parallel relationship to the secondary feed conduit (3) on its side remote from the casing tubes (1) is a vapour feed conduit (5) to which are connected the heating tubes (2) which are passed transversely through the secondary feed conduit (3).
- A heat exchanger according to one of claims 1 to 4 characterised in that the heating tubes (2) are wound in a helical configuration in the casing tubes (1) at a spacing from the mouth opening (4) thereof into the secondary feed conduit (3), wherein the outer winding diameter is equal to the inside diameter of the casing tube (1) and a displacement body (9) is arranged in the interior of the windings.
- A heat exchanger according to claim 5 characterised in that in the wound region the heating tubes (2) are in the form of ribbed tubes with tube windings which are disposed in mutually close relationship.
- A heat exchanger according to one of claims 1 to 6 characterised in that at the upstream end (1") the casing tubes (1) are connected by a respective laterally fitted connection (10) to a common secondary return conduit (11), which extends beside the casing tubes (1), for the secondary heating medium, and that the ends (2') of the heating tubes (2), at the condensate end, are each axially passed through the end wall of their casing tube (1) and are connected to a common condensate collecting conduit (12).
- A heat exchanger according to claim 7 characterised in that the secondary feed and return conduits (3, 11) as well as the vapour feed conduit (5) and the condensate collecting conduit (12) can be selectively connected with a respective one of their two conduit ends or with their two conduit ends to the feed and return for the secondary heating medium or to the common vapour feed and the common condensate return respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4318240 | 1993-06-02 | ||
| DE4318240A DE4318240C2 (en) | 1993-06-02 | 1993-06-02 | Steam heated heat exchanger |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0627607A2 EP0627607A2 (en) | 1994-12-07 |
| EP0627607A3 EP0627607A3 (en) | 1996-03-20 |
| EP0627607B1 true EP0627607B1 (en) | 1998-09-30 |
Family
ID=6489405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94105670A Expired - Lifetime EP0627607B1 (en) | 1993-06-02 | 1994-04-13 | Steam-heated heat exchanger |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0627607B1 (en) |
| AT (1) | ATE171776T1 (en) |
| DE (2) | DE4318240C2 (en) |
| DK (1) | DK0627607T3 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10303570B4 (en) * | 2003-01-30 | 2007-02-01 | Helmut Bälz GmbH | Heat exchanger device for generating hot or hot water |
| CN107894178B (en) * | 2017-03-21 | 2019-02-12 | 山东大学 | A kind of heat exchanger for the condensable steam that constant-current stabilizer spacing becomes larger |
| CN107869926B (en) * | 2017-03-21 | 2019-01-18 | 山东大学 | A kind of gradually smaller condensable steam heat exchanger of constant-current stabilizer size |
| CN107869925B (en) * | 2017-03-21 | 2019-01-18 | 山东大学 | A kind of shell-and-tube heat exchanger of the multitube constant-current stabilizer containing on-condensible gas |
| CN107869924B (en) * | 2017-03-21 | 2019-01-18 | 山东大学 | A kind of shell-and-tube heat exchanger of the condensable multitube constant-current stabilizer of vapour phase |
| CN107869927B (en) * | 2017-03-21 | 2019-01-18 | 山东大学 | A kind of non-condensable gas pipe heat exchanger of constant-current stabilizer length variation |
| CN107966050B (en) * | 2017-04-21 | 2019-03-29 | 青岛金玉大商贸有限公司 | A kind of porous type constant-current stabilizer heat exchanger containing on-condensible gas |
| CN107976093B (en) * | 2017-04-21 | 2019-03-29 | 青岛金玉大商贸有限公司 | A kind of non-condensable gas porous type constant-current stabilizer heat exchanger of spacing variation |
| CN107966051B (en) * | 2017-04-21 | 2019-04-02 | 青岛金玉大商贸有限公司 | A kind of condensable porous type constant-current stabilizer heat exchanger of spacing variation |
| CN107966052B (en) * | 2017-04-21 | 2019-03-08 | 青岛金玉大商贸有限公司 | Condensable porous current stabilizer heat exchanger with variable length |
| CN107976094B (en) * | 2017-04-21 | 2019-04-02 | 青岛金玉大商贸有限公司 | A kind of non-condensable gas porous type constant-current stabilizer heat exchanger of length variation |
| CN107966053B (en) * | 2017-04-21 | 2019-03-08 | 青岛金玉大商贸有限公司 | A kind of condensable porous type constant-current stabilizer heat exchanger |
| CN112022046B (en) * | 2019-06-04 | 2024-09-13 | 青岛海尔洗碗机有限公司 | Dish washer sleeve pipe heat transfer device and dish washer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7733614U1 (en) * | 1900-01-01 | Viessmann, Hans, 3559 Battenberg | ||
| DE1119883B (en) * | 1955-08-12 | 1961-12-21 | Helmut Baelz Ges Fuer Patentve | Standing steam-heated heat exchanger with helically tightly wound heating pipes |
| NL237150A (en) * | 1958-03-17 | |||
| IT8223093V0 (en) * | 1982-10-04 | 1982-10-04 | Ferroli Ind Riscaldamento | GAS-WATER HEAT EXCHANGER IN PARTICULAR FOR CENTRALIZED HEATING SYSTEMS WITH THE SUPPLY SERVICE OF AQUACALDA FOR HYGIENE-SANITARY USE. |
| DE3310375A1 (en) * | 1983-03-22 | 1984-09-27 | Franz 7505 Ettlingen Gärtner | Heat exchanger |
-
1993
- 1993-06-02 DE DE4318240A patent/DE4318240C2/en not_active Expired - Lifetime
-
1994
- 1994-04-13 EP EP94105670A patent/EP0627607B1/en not_active Expired - Lifetime
- 1994-04-13 DE DE59406993T patent/DE59406993D1/en not_active Expired - Lifetime
- 1994-04-13 AT AT94105670T patent/ATE171776T1/en active
- 1994-04-13 DK DK94105670T patent/DK0627607T3/en active
Also Published As
| Publication number | Publication date |
|---|---|
| ATE171776T1 (en) | 1998-10-15 |
| EP0627607A3 (en) | 1996-03-20 |
| EP0627607A2 (en) | 1994-12-07 |
| DK0627607T3 (en) | 1999-02-08 |
| DE59406993D1 (en) | 1998-11-05 |
| DE4318240C2 (en) | 1998-05-20 |
| DE4318240A1 (en) | 1994-12-08 |
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