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DE102005002408B3 - Gas expansion chamber for shock pressure damping in heat exchangers using at least one liquid medium is located either in supply point of heat exchanger or in exchanger itself - Google Patents

Gas expansion chamber for shock pressure damping in heat exchangers using at least one liquid medium is located either in supply point of heat exchanger or in exchanger itself Download PDF

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Publication number
DE102005002408B3
DE102005002408B3 DE200510002408 DE102005002408A DE102005002408B3 DE 102005002408 B3 DE102005002408 B3 DE 102005002408B3 DE 200510002408 DE200510002408 DE 200510002408 DE 102005002408 A DE102005002408 A DE 102005002408A DE 102005002408 B3 DE102005002408 B3 DE 102005002408B3
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Germany
Prior art keywords
heat exchanger
expansion chamber
gas expansion
heat
liquid
Prior art date
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Expired - Fee Related
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DE200510002408
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German (de)
Inventor
Rolf Dr.rer.nat. Meißner
Michael Rehberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kelvion Brazed PHE GmbH
Ritter Energie und Umwelttechnik GmbH and Co KG
Original Assignee
WTT Wilchwitzer Thermo Technik GmbH
Paradigma Energie und Umwelttechnik GmbH and Co KG
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Priority to DE200510002408 priority Critical patent/DE102005002408B3/en
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Publication of DE102005002408B3 publication Critical patent/DE102005002408B3/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/04—Devices damping pulsations or vibrations in fluids
    • F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
    • F16L55/05—Buffers therefor
    • F16L55/052—Pneumatic reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/12—Safety or protection arrangements; Arrangements for preventing malfunction for preventing overpressure

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

Die Erfindung besteht in einem Gas-Ausdehnungsraum zur Druckstoßdämpfung bei Wärmetauschern (3) zum Wärmetausch zwischen Medien, von denen mindestens eines flüssig ist (2), der ein konstruktiver und integraler Bestandteil (1) des Wärmetauschers ist und als nicht von selbst entlüftbarer Raum entweder in mindestens einem Anschluss des Wärmetauschers (1a) oder im Wärmetauscher selbst untergebracht ist (1b, 1c).The Invention is in a gas expansion space for pressure shock absorption at heat exchangers (3) for heat exchange between media, at least one of which is liquid (2), which is a constructive and integral part (1) of the heat exchanger is and as a non-self-venting room either in at least a connection of the heat exchanger (1a) or in the heat exchanger itself is housed (1b, 1c).

Figure 00000001
Figure 00000001

Description

Die Erfindung besteht in einem Gas-Ausdehnungsraum zur Druckstoßdämpfung als konstrukti- ver und integraler Bestandteil von Wärmetauschern in Form eines nicht von selbst entlüftbaren Raumes.The Invention consists in a gas expansion chamber for pressure shock absorption as constructive and integral part of heat exchangers in the form of a not self-ventilating Space.

Wenn Flüssigkeitsströme schlagartig zum Stehen gebracht werden, z. B. durch schnelles Schließen von Ventilen, dann entsteht kurzzeitig ein Druckstoß. Der dabei auftretende Spitzendruck ist umso größer, je abrupter der Impuls der Flüssigkeit verringert wird. Wenn sich Gasblasen in der Flüssigkeit befinden, dann werden diese durch den Druckstoß komprimiert. Dabei wird kinetische Energie in mechanische Arbeit und Kompressionswärme verwandelt, was dazu führt, dass der Druckstoss gedämpft wird.If Liquid flows abruptly be brought to a halt, z. B. by fast closing of Valves, then briefly creates a pressure surge. The occurring peak pressure is the bigger, ever abruptly reduces the momentum of the liquid becomes. If there are gas bubbles in the liquid, then compressed by the pressure surge. Kinetic energy is transformed into mechanical work and compression heat, which leads to, that the pressure shock damped becomes.

In hydraulischen Systemen werden mitunter aufwändige Aggregate eingebaut, welche eventuell auftretende Druckstöße dämpfen sollen, um Überdruckschäden zu vermeiden.In Hydraulic systems are sometimes installed consuming equipment, which should dampen any pressure surges occurring in order to avoid overpressure damage.

Viele Wärmetauscher sind druckempfindlich, besonders solche, welche große, ungestützte Flächen aufweisen. Das sind zum Beispiel Plattenwärmetauscher, die aus einem Stapel gleichgroßer und gleichförmig profilierter Platten bestehen, zwischen denen die Wärmetauschermedien strömen und durch die Platten Wärme austauschen, wie sie u. a. und ausführlicher aus FR 323 119 A2 , DE 198 58 652 A1 , DE 694 22 207 T2 ( EP 0611941 B1 ) oder DE 3339932 A bekannt sind, aber darüber hinaus auch viele andere.Many heat exchangers are pressure sensitive, especially those which have large unsupported surfaces. These are, for example, plate heat exchangers consisting of a stack of equally sized and uniformly profiled plates between which the heat exchange media flow and exchange heat through the plates, as and among others FR 323 119 A2 . DE 198 58 652 A1 . DE 694 22 207 T2 ( EP 0611941 B1 ) or DE 3339932 A are known, but also many others.

Ziel der Erfindung war es, für Wämetauscher einen integrierten Schutz gegen Überdruckschäden in Folge von Druckschlägen auf der Grundlage einer Gaskompression herzustellen, ohne dazu ein separates Aggregat einzusetzen.aim The invention was for Heat exchanger one integrated protection against overpressure damage in consequence of pressure surges on the basis of gas compression, without having to use separate unit.

Dazu wurde ausgenutzt, dass in Wärmetauschern mit definierter Ausrichtung im Raum entweder an den Anschlüssen (in 1 Variante mit Detail 1a) oder im Inneren (in 1 Variante mit Detail 1) mit häufig einfachen Mitteln gezielt Hohlräume geschaffen werden können, die gar nicht oder nicht vollständig durchflossen werden und die nicht von selbst, auch nicht durch die strömende Flüssigkeit, entlüftet werden. Entweder verlässt das beim Befüllen des Wärmetauschers in diesem Hohlraum komprimierte Gas den Hohlraum nicht mehr oder der Hohlraum wird durch Ausgasung bei Erwärmung immer wieder nachgefüllt, wie es zum Beispiel bei sauerstoffhaltigem Trink- oder Brauchwasser der Fall ist.For this purpose, it was exploited that in heat exchangers with a defined orientation in space either at the terminals (in 1 Variant with detail 1a ) or inside (in 1 Variant with detail 1 ) can be created with often simple means targeted cavities that are not or not fully flowed through and are not vented by itself, not even by the flowing liquid. Either the compressed during filling of the heat exchanger in this cavity gas no longer leaves the cavity or the cavity is refilled by degassing when heated again and again, as is the case for example with oxygenated drinking or service water.

Zum Beispiel kann dieser Hohlraum in einen der Wärmetauscheranschlüsse als nicht durchflossene Ausstülpung nach oben integriert werden (in 1 Variante mit Detail 1b). Bei Wärme tauschern mit mehreren parallel durchströmten Räumen ist es meistens wenig kostenintensiv, einfach mindestens einen dieser Räume als abflusslosen, gasgefüllten Hohlraum auszulegen (in 1 Variante mit Detail 1c).For example, this cavity may be integrated into one of the heat exchanger ports as a non-perfoiled plug up (in FIG 1 Variant with detail 1b ). In heat exchangers with several parallel flowed rooms, it is usually not very costly to simply design at least one of these rooms as a drainage-free, gas-filled cavity (in 1 Variant with detail 1c ).

Zusammenfassend kann festgestellt werden, dass der Wärmetauscher von vornherein so konstruiert wird, dass er ständig eine Mindestmenge an komprimierbarem Gas enthält, ohne dass dadurch dessen Wärmetauscherleistung beeinträchtigt wird oder andere Nachteile entstehen. Dazu wird im Wärmetauscher oder in dessen Anschlüssen mindestens ein von der Flüssigkeit nicht durchfließbarer, unten offener und oben geschlossener Hohlraum vorgesehen, der in seinem oberen Teil ein Gaspolster festhält.In summary can be determined that the heat exchanger from the outset is constructed so that it is constantly contains a minimum amount of compressible gas without affecting its heat exchanger performance impaired or other disadvantages will arise. This is done in the heat exchanger or in its connections at least one of the liquid non-flowable, provided below open and closed at the top, the in his upper part holds a gas cushion.

Claims (4)

Gas-Ausdehnungsraum (1) zur Druckstoßdämpfung bei Wärmetauschern (3) zum Wärmetausch zwischen Medien, von denen mindestens eines flüssig ist (2), dadurch gekennzeichnet, dass in dem Wärmetauscher mindestens ein von der Flüssigkeit nicht durchfließbarer, unten offener und oben geschlossener Hohlraum gebildet ist, der in seinem oberen Teil ein Gaspolster festhält und dass dieser Hohlraum ein konstruktiver und integraler Bestandteil des Wärmetauschers ist.Gas expansion chamber ( 1 ) for pressure shock absorption in heat exchangers ( 3 ) for heat exchange between media, at least one of which is liquid ( 2 ), characterized in that in the heat exchanger at least one of the liquid is not flowable, open at the bottom and closed at the top cavity, which holds a gas cushion in its upper part and that this cavity is a constructive and integral part of the heat exchanger. Gas-Ausdehnungsraum nach Anspruch 1, gekennzeichnet dadurch, dass mindestens einer der beiden Anschlüsse, über die das Fluid (2) in den Wärmetauscher (3) ein- und austritt, als nach oben geschlossener und nicht von selbst entlüftbarer Raum (1a) ausgeführt wird.Gas expansion chamber according to claim 1, characterized in that at least one of the two ports through which the fluid ( 2 ) in the heat exchanger ( 3 ) enters and exits, as upwardly closed and not self-ventilated space ( 1a ) is performed. Gas-Ausdehnungsraum nach Anspruch 1, gekennzeichnet dadurch, dass bei einem Wärmetauscher (3), der mehrere parallel verlaufende ebene oder gekrümmte Wärmetauscherflächen aufweist, zwischen denen von Zwischenraum zu Zwischenraum jeweils verschiedene Wärmetauschermedien strömen, von denen mindestens eines flüssig ist (2), mindestens ein Zwischenraum nur einen Eintritt für das flüssige Wärmetauschermedium im unteren Bereich des Zwischenraumes, jedoch keinen Austritt aufweist (1b) und nach oben geschlossen und nicht von selbst entlüftbar ausgeführt ist.Gas expansion chamber according to claim 1, characterized in that in a heat exchanger ( 3 ), which has a plurality of parallel planar or curved heat exchanger surfaces, between which different heat exchange media flow from one space to the next, at least one of which is liquid ( 2 ), at least one intermediate space has only one inlet for the liquid heat exchanger medium in the lower region of the intermediate space, but has no outlet ( 1b ) and closed at the top and not self-venting executed. Gas-Ausdehnungsraum nach Anspruch 1, gekennzeichnet dadurch, dass bei einem Wärmetauscher (3), der mehrere parallel verlaufende ebene oder gekrümmte Wärmetauscherflächen aufweist, zwischen denen von Zwischenraum zu Zwischenraum jeweils verschiedene Wärmetauschermedien strömen, von denen mindestens eines flüssig ist (2), mindestens ein Zwischenraum nicht vollständig, sondern nur im unteren Bereich des Zwischenraumes durchströmt wird, während der obere Bereich geschlossen und nicht von selbst entlüftbar ausgeführt ist (1c).Gas expansion chamber according to claim 1, characterized in that in a heat exchanger ( 3 ), the several parallel plane or curved heat exchanger surfaces, between which different heat exchange media flow from one space to the next, at least one of which is liquid ( 2 ), at least one gap is not completely, but is flowed through only in the lower region of the intermediate space, while the upper region is closed and not self-venting executed ( 1c ).
DE200510002408 2005-01-19 2005-01-19 Gas expansion chamber for shock pressure damping in heat exchangers using at least one liquid medium is located either in supply point of heat exchanger or in exchanger itself Expired - Fee Related DE102005002408B3 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2485004A1 (en) * 2011-02-04 2012-08-08 Alfa Laval Corporate AB A heat exchanger assembly and use of an apparatus in a heat exchanger assembly
EP2489945A3 (en) * 2011-02-18 2014-01-22 Robert Laabmayr Heat accumulator
WO2014086677A3 (en) * 2012-12-05 2014-09-04 Alfa Laval Corporate Ab Device, method and plate heat exchanger

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3125463A1 (en) * 1981-06-29 1983-01-27 Michael Dipl.-Phys. 8500 Nürnberg Stahl Pressure equalising member in PCM devices, preferably in ice reservoirs
DE3339932A1 (en) * 1983-11-04 1985-05-15 Bayer Ag, 5090 Leverkusen Gap-type heat exchanger having webs
DE3722060A1 (en) * 1987-07-03 1989-04-06 Schubert Werner Safety valve protective system
DE19858652A1 (en) * 1997-12-19 1999-06-24 Swep International Ab Plate heat exchanger
DE69422207T2 (en) * 1993-02-19 2000-06-21 Giannoni S P A Plate heat exchangers and corresponding plates
DE10007574C2 (en) * 2000-02-18 2002-10-24 Frank Triesch Process for heat transfer between at least three heat transfer media and heat exchanger for performing this method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3125463A1 (en) * 1981-06-29 1983-01-27 Michael Dipl.-Phys. 8500 Nürnberg Stahl Pressure equalising member in PCM devices, preferably in ice reservoirs
DE3339932A1 (en) * 1983-11-04 1985-05-15 Bayer Ag, 5090 Leverkusen Gap-type heat exchanger having webs
DE3722060A1 (en) * 1987-07-03 1989-04-06 Schubert Werner Safety valve protective system
DE69422207T2 (en) * 1993-02-19 2000-06-21 Giannoni S P A Plate heat exchangers and corresponding plates
DE19858652A1 (en) * 1997-12-19 1999-06-24 Swep International Ab Plate heat exchanger
DE10007574C2 (en) * 2000-02-18 2002-10-24 Frank Triesch Process for heat transfer between at least three heat transfer media and heat exchanger for performing this method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2485004A1 (en) * 2011-02-04 2012-08-08 Alfa Laval Corporate AB A heat exchanger assembly and use of an apparatus in a heat exchanger assembly
WO2012104118A1 (en) * 2011-02-04 2012-08-09 Alfa Laval Corporate Ab A heat exchanger assembly and use of an apparatus in a heat exchanger
CN103339459A (en) * 2011-02-04 2013-10-02 阿尔法拉瓦尔股份有限公司 A heat exchanger assembly and use of an apparatus in a heat exchanger
CN103339459B (en) * 2011-02-04 2015-12-02 阿尔法拉瓦尔股份有限公司 Use of heat exchanger components and equipment in heat exchangers
US9846001B2 (en) 2011-02-04 2017-12-19 Alfa Laval Corporate Ab Heat exchanger assembly and use of an apparatus in a heat exchanger
EP2489945A3 (en) * 2011-02-18 2014-01-22 Robert Laabmayr Heat accumulator
WO2014086677A3 (en) * 2012-12-05 2014-09-04 Alfa Laval Corporate Ab Device, method and plate heat exchanger
US9810490B2 (en) 2012-12-05 2017-11-07 Alfa Laval Corporate Ab Device, method and plate heat exchanger

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8322 Nonbinding interest in granting licences declared
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Owner name: WTT-WILCHWITZER THERMO-TECHNIK GMBH, 04603 NOB, DE

Owner name: RITTER ENERGIE- UND UMWELTTECHNIK GMBH & CO. K, DE

8327 Change in the person/name/address of the patent owner

Owner name: GEA WTT GMBH, 04603 NOBITZ, DE

Owner name: RITTER ENERGIE- UND UMWELTTECHNIK GMBH & CO. K, DE

R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee