EP2299226A2 - Tubular heat exchanger with bellows compensator - Google Patents
Tubular heat exchanger with bellows compensator Download PDFInfo
- Publication number
- EP2299226A2 EP2299226A2 EP10171887A EP10171887A EP2299226A2 EP 2299226 A2 EP2299226 A2 EP 2299226A2 EP 10171887 A EP10171887 A EP 10171887A EP 10171887 A EP10171887 A EP 10171887A EP 2299226 A2 EP2299226 A2 EP 2299226A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- bellows
- product
- tube
- tubular heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 claims description 4
- 235000011389 fruit/vegetable juice Nutrition 0.000 claims description 2
- 235000021056 liquid food Nutrition 0.000 claims description 2
- 235000013336 milk Nutrition 0.000 claims description 2
- 239000008267 milk Substances 0.000 claims description 2
- 210000004080 milk Anatomy 0.000 claims description 2
- 235000013305 food Nutrition 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 230000002349 favourable effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/08—Tubular elements crimped or corrugated in longitudinal section
-
- 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
- F28D7/10—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 arranged one within the other, e.g. concentrically
-
- 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
- F28D7/16—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 arranged in parallel spaced relation
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0042—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for foodstuffs
-
- 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
- F28F2265/26—Safety or protection arrangements; Arrangements for preventing malfunction for allowing differential expansion between elements
Definitions
- the invention relates to a tubular heat exchanger specified in the preamble of claim 1. Art.
- Tubular heat exchangers for example for product versus product flow guidance are out DE 600 19 635 T2 and DE 102 56 232 B4 known.
- the thermal expansion compensation device is in this case a sliding connection with seals or a floating or floating bearing that allows thermally induced relative movements, however, causes dead spaces in which the product can settle so that it is no longer removable despite intensive cleaning, or the hygienically flawless Cleaning requires disassembly.
- compensation devices are not recommended by the competent authorities, but have hitherto been customary as a compromise solution for the product versus product flow guidance.
- the invention has for its object to make a tubular heat exchanger of the type mentioned for a product against product flow guide hygienically cleanable.
- the ratio of B: T may be between about 1 and up to 2. The larger the ratio, the better the folding behaves when cleaning after prescribed operating periods or to a product change.
- a plurality of axially directly successive, alternately formed inwardly and outwardly and at least substantially similar and relatively wide folds are provided in the bellows. If this bellows is arranged in the jacket tube, the surface that can be contacted by the product is present only on the inside. On the other hand, if the bellows is arranged in an inner tube, the inner or the outer surface or both surfaces can be contacted by the product, whereby optimal conditions for the cleaning are in each case given.
- a plurality of axially inwardly or outwardly successive substantially similar convolutions are provided, formed on the product-contactable surface with the ratio of B: T of about 1 or greater, and are convolutions in the interspaces provided, which are formed with a ratio of B1: T ⁇ 1.
- B1: T the ratio of B1: T ⁇ 1
- This hybrid form of the bellows is recommended, as stated, especially for the jacket tube when it is contacted on the inner surface of the product.
- the inner diameter of the bellows has a size that is between approximately the inner diameter of the bellows-containing inner or outer tube and this inner diameter minus the depth of the convolutions.
- unwanted bottlenecks in the respective flow channels can be avoided or minimized within this inner diameter of the bellows.
- the integration of the bellows in the respective tube is easy to master manufacturing technology.
- the welds are tight and tolerate easily high pressure differences.
- the bellows can be arranged at the respectively optimal position of the tube.
- the bellows is integrally formed in the circular cylindrical wall of the respective tube, for example by a rolling or rolling treatment or by hydraulic forming. This eliminates the need for welded joints.
- a jacket tube with a plurality of inner tubes forms a tube heat exchanger module.
- the bellows at least one bellows, can be arranged approximately in the longitudinal center of the heat exchanger module in order to optimally develop its compensation effect.
- the bellows is in the jacket tube, such that the surface of the bellows which can be contacted by the product faces the inner tubes accommodated in the jacket tube, which can be smooth.
- each fold is formed in an axial section of the inner and / or jacket tube equipped with the bellows, made of continuously curved sections that are transferred into one another.
- these are circular arc sections having a radius of curvature corresponding approximately to half the depth and / or width of the respective fold.
- the Fig. 1 and 5 illustrate in each case a single module M of a dashed line indicated tubular heat exchanger W, as used for example in the filling industry for liquid food products (eg water, juices, milk) to a product against product flow guidance in the heat treatment (heating or cooling) of a food product.
- liquid food products eg water, juices, milk
- the tubular heat exchanger W several modules can be installed to achieve the longest possible flow paths for the product.
- the module M may be, for example 3.0 m, 6.0 m long, or even longer.
- the module M points in Fig. 1 a jacket tube 1, for example made of stainless steel, on, the end-side mounting flanges 2 for mounting in the tube heat exchanger W has.
- the jacket tube 1 at least one inner tube 3 is provided, which extends substantially parallel to the jacket tube 1 between mounting flanges 4.
- the food product circulates, wherein optionally at least one flow path is also used for a heat transfer medium (in Fig. 1 eg the flow path 5).
- a compensation device K which is designed as a bellows C with multiple folds F. It would be quite possible to provide several bellows C over the length of the module M (eg 6.0 m or more).
- Fig. 5 are on the casing pipe 1 for the connection, for example, the inner tubes 3 open end flanges 2 and in the jacket tube 1 side ports 2 'are provided.
- the inner tubes could be 3 equipped with bellows C, or only the inner tubes 3, in which case a bellows C in an inner tube 3 optionally inside and / or outside presents a contactable surface 12 of the product.
- Fig. 2 shows the bellows C of Fig. 1 on a larger scale.
- the bellows C is welded with end-side, eg circular cylindrical Rohrendstutzen 10 with the jacket tube 1, and Although inserted here in jacket pipe section ends 1a, 1 b inside and welded at 11. Alternatively, the pipe end pieces 10 could also be plugged and welded on the outside of the jacket pipe section ends 1a, 1b.
- the bellows C is prefabricated and subsequently installed in the jacket tube 1.
- the bellows C in Fig. 2 is characterized by the fact that it has a plurality of axially spaced successively arranged around the tube axis X, relatively wide folds F having a radial depth T and an axial width B and are similar to each other.
- the ratio of B: T is about 1 or even greater, preferably up to about 2.
- the product-contactable surface 12 is primarily concavely rounded and relatively harmonic with, for example, a radius of curvature R1 that is about half the depth T or Width B may be.
- Opposite folds F1 ' are provided in the spaces between the axially spaced folds F, each having on the product-contactable surface 12 a convex surface portion having a radius of curvature R2' smaller than half the depth T or ready B, and approximately can be half the width B1 of the fold F1 '.
- the inner diameter of the bellows C is indicated by d and corresponds approximately to the inner diameter D of the jacket tube 1.
- the outer diameter D1 of the bellows C corresponds approximately to the inner diameter d plus twice the depth T and plus the material thickness of the bellows C.
- the bellows C is, preferably as well as the jacket tube 1, made of stainless steel.
- the inner tubes 3 are in Fig. 2 Not shown.
- the outer surface 9 of the bellows C does not come into contact with the product in the module M.
- the bellows C is integrated either in the jacket tube 1 or in the respective inner tube 3. If the bellows C is located in the inner tube 3, then the inner and outer surfaces 12 can be contacted by the product here.
- the bellows C several axially directly consecutive, alternately inwardly and outwardly shaped folds F, F1 are formed, which may be similar, and consecutively convex and concave curvatures, suitably with radii of curvature R1, R2 corresponding to about half the depth T. It is expedient around steplessly guided into each other circular sections, preferably semicircles.
- the inner diameter d1 of the bellows C corresponds approximately to the inner diameter d of the jacket or inner tube 1, 3, or its outer diameter d
- the outer diameter D1 of the bellows corresponds approximately to the outer diameter D plus twice the depth T and the material thickness.
- the width B of each fold is just under 10.0 mm
- the depth T of each fold is also about 10.0 mm
- the inner diameter d1 of the bellows C is smaller than the inner diameter d of the jacket or inner tube 1, 3, preferably to a maximum about the depth T smaller, and the outer diameter D1 of the bellows C is slightly larger than the outer diameter D or almost equal to the outer diameter D.
- the bellows C in Fig. 4 are axially directly successive multiple folds F, F1 provided alternately inwards and outwards, which may be similar.
- the ratio B: T of the convolution F, F1 is selected to be about 1.0 or greater, preferably to a maximum of about 2.0.
- the ratio may be slightly smaller than 1, but preferably always more than 0.9.
- Preferred embodiments have a sheath diameter of up to 250 mm. However, it can also occur shapes with larger diameters.
Abstract
Description
Die Erfindung betrifft einen Röhrenwärmetauscher der im Oberbegriff des Patentanspruchs 1 angegebenen Art.The invention relates to a tubular heat exchanger specified in the preamble of claim 1. Art.
Röhrenwärmetauscher z.B. zur Produkt gegen Produkt-Strömungsführung sind aus
In Röhrenwärmetauschern in der Lebensmittelindustrie, in denen eine Strömungsführung Produkt gegen Wärmeträgermedium wie Wasser stattfindet, ist es hingegen bekannt, als Wärmeausdehnungs-Kompensationseinrichtungen wenigstens einen Faltenbalg so zu verbauen, dass ausschließlich vom Wärmeträgermedium kontaktiert wird, hingegen keinesfalls vom Produkt. Der Faltenbalg wird nach bestimmten Einsatzperioden des Röhrenwärmetauschers oder bei einem Produktwechsel nicht gereinigt, da er ohnedies nur mit dem Wärmeträgermedium in Kontakt ist. Der Faltenbalg ist bewusst mit einem Verhältnis von B : T von sehr viel kleiner als 1, gegebenenfalls mit geraden Flanken und sehr kleinen Krümmungsradien zwischen den Flanken, ausgebildet, weil dadurch die Kompensationswirkung pro Faltung stark ist und deshalb möglichst wenige Faltungen gebraucht werden. Dieser Faltenbalg ließe sich wegen des für die Kompensation günstigen Verhältnisses von B : T sehr viel kleiner als 1 nicht mehr zu einem hygienisch einwandfreien Zustand reinigen, da beim Kontakt mit einem Produkt z.B. wegen Wirbelbildungen und Totzonen unvermeidlich fest haftende Produktablagerungen auftreten würden.In tubular heat exchangers in the food industry, where a flow guide product takes place against heat transfer medium such as water, it is known, however, to install as a thermal expansion compensation means at least one bellows so that is contacted exclusively by the heat transfer medium, however, by no means the product. The bellows is not cleaned after certain periods of use of the tube heat exchanger or a product change, since it is in contact only with the heat transfer medium anyway. The bellows is deliberately designed with a ratio of B: T of much less than 1, possibly with straight flanks and very small radii of curvature between the flanks, because this makes the compensating effect per fold strong and therefore as few folds as possible are needed. This bellows could be because of the favorable for the compensation ratio of B: T much less than 1 no longer clean to a hygienic condition, since upon contact with a product, for. due to vortices and dead zones inevitably firmly adhering product deposits would occur.
Der Erfindung liegt die Aufgabe zugrunde, einen Röhrenwärmetauscher der eingangs genannten Art für eine Produkt gegen Produkt-Strömungsführung hygienisch einwandfrei reinigbar zu gestalten.The invention has for its object to make a tubular heat exchanger of the type mentioned for a product against product flow guide hygienically cleanable.
Die gestellte Aufgabe wird mit den Merkmalen des Patentanspruchs 1 gelöst.The stated object is achieved with the features of claim 1.
Mit der bewusst vorgenommenen Abkehr vom üblicherweise für eine optimale Wärmeausdehnungs-Kompensation üblichen Verhältnis von B : T der Faltung zu einem für die Kompensation ungünstigeren Verhältnis von B : T von etwa 1 oder größer zumindest an der vom Produkt kontaktierbaren Oberfläche der Faltung ergibt sich dadurch die Möglichkeit, die vom Produkt kontaktierbare Oberfläche zu einem hygienisch einwandfreien Zustand vom Produkt zu reinigen, weil relativ moderate Richtungswechsel in den gerundeten Faltungen, relativ schwach gekrümmte Oberflächen und keine kritischen Toträume vorliegen. Das Produkt neigt somit weniger zum Anhaften, sondern wird stets zügig aus der Faltung gespült. Reinigungsmedien können Produktrückstände effizient beseitigen und werden selbst leicht ausgespült und/oder rückstandsfrei entfernt. Um die insgesamt geforderte Kompensationswirkung zu leisten, braucht nur eine entsprechende Mehranzahl an Faltungen vorgesehen zu werden, was jedoch im Hinblick auf die erzielbaren, hygienisch einwandfreien Verhältnisse für die Produkt gegen Produkt-Strömungsführung und die hermetische Dichtheit im Röhrenwärmetauscher durchaus akzeptabel ist. Durch die in Kauf genommene Verschlechterung der Kompensationswirkung jeder z.B. mit ihrer Innenseite mit dem Produkt in Kontakt tretenden, an sich zum technischen Zweck der Kompensation von Wärmeausdehnungen vorgesehenen Faltung, erhält der Faltenbalg jedoch erst die hygienische Eignung zur Produkt gegen Produkt-Strömungsführung im Röhrenwärmetauscher, auch weil durch einen harmonischen Oberflächenverlauf sehr günstige Strömungsverhältnisse erzielt werden, die vor allem die Reinigungseffizienz drastisch verbessern. Es wird somit ein Röhrenwärmetauscher mit hygienischem Faltenbalg erzielt.With the consciously made departure from the usual for optimal thermal expansion compensation ratio of B: T of the folding to a less favorable for the compensation ratio of B: T of about 1 or greater, at least on the contact surface of the fold of the product results in the Ability to clean the product contactable surface to a hygienic condition from the product because of relatively moderate directional changes in the rounded folds, relatively weakly curved surfaces, and no critical dead spaces. The product thus tends less to adhere, but is always flushed out of the fold quickly. Cleaning media can efficiently remove product residues and are even easily rinsed and / or removed without residue. In order to achieve the total required compensation effect, only a corresponding number of folds need to be provided, which however is perfectly acceptable with regard to the achievable, hygienic conditions for the product against product flow guidance and the hermetic tightness in the tubular heat exchanger. By accepting the deterioration of the compensating effect of each e.g. However, the bellows receives only the hygienic suitability of the product against product flow guidance in the tubular heat exchanger, also because very favorable flow conditions are achieved by a harmonious surface course with their inside with the product in contact, provided for the technical purpose of compensation of thermal expansion which, above all, drastically improve the cleaning efficiency. It is thus achieved a tubular heat exchanger with hygienic bellows.
Bei einer zweckmäßigen Ausführungsform kann das Verhältnis von B : T zwischen etwa 1 und bis zu 2 betragen. Je größer das Verhältnis ist, desto günstiger verhält sich die Faltung bei der Reinigung nach vorgeschriebenen Betriebsperioden oder zu einem Produktwechsel.In an expedient embodiment, the ratio of B: T may be between about 1 and up to 2. The larger the ratio, the better the folding behaves when cleaning after prescribed operating periods or to a product change.
Bei einer zweckmäßigen Ausführungsform sind im Faltenbalg mehrere axial direkt aufeinanderfolgende, abwechselnd nach innen und außen geformte und zumindest im Wesentlichen gleichartige und relativ weite Faltungen vorgesehen. Ist dieser Faltenbalg im Mantelrohr angeordnet, liegt die vom Produkt kontaktierbare Oberfläche nur an der Innenseite vor. Ist der Faltenbalg hingegen in einem Innenrohr angeordnet, kann die innere oder die äußere Oberfläche oder können beide Oberflächen vom Produkt kontaktiert werden, wobei jeweils optimale Verhältnisse für die Reinigung gegeben sind.In an expedient embodiment, a plurality of axially directly successive, alternately formed inwardly and outwardly and at least substantially similar and relatively wide folds are provided in the bellows. If this bellows is arranged in the jacket tube, the surface that can be contacted by the product is present only on the inside. On the other hand, if the bellows is arranged in an inner tube, the inner or the outer surface or both surfaces can be contacted by the product, whereby optimal conditions for the cleaning are in each case given.
Bei einer alternativen Ausführungsform sind mehrere axial mit Zwischenabständen aufeinanderfolgende, im Wesentlichen gleichartige Faltungen nach innen oder nach außen vorgesehen, die an der vom Produkt kontaktierbaren Oberfläche mit dem Verhältnis von B : T von etwa 1 oder größer ausgebildet sind, und sind in den Zwischenabständen Faltungen vorgesehen, die mit einem Verhältnis von B1 : T < 1 ausgebildet sind. In dieser Ausführungsform empfiehlt es sich, die konvex gekrümmten Oberflächen der Faltungen mit dem Verhältnis B1 : T < 1 an der vom Produkt kontaktierbaren Oberfläche des Faltenbalgs anzuordnen, weil auch diese konvexen Oberflächenabschnitte gut zu reinigen sind. Dies ist eine hybride Ausbildung des Faltenbalgs, einerseits um die konkaven Oberflächenabschnitte der relativ weiten Faltungen mit dem Verhältnis B : T von etwa 1 oder größer gut reinigen zu können, aber eine geringere Kompensationswirkung pro Längeneinheit zu erzielen, und andererseits auch an den konvexen Oberflächenbereichen der Faltungen mit dem Verhältnis von B1 : T < 1 ausreichend gut reinigen zu können, aber dort eine stärkere Kompensationswirkung pro Längeneinheit zu erhalten. Diese Hybridform des Faltenbalgs empfiehlt sich, wie gesagt, speziell für das Mantelrohr, wenn dieses an der Innenoberfläche vom Produkt kontaktiert wird.In an alternative embodiment, a plurality of axially inwardly or outwardly successive substantially similar convolutions are provided, formed on the product-contactable surface with the ratio of B: T of about 1 or greater, and are convolutions in the interspaces provided, which are formed with a ratio of B1: T <1. In this embodiment, it is advisable to arrange the convexly curved surfaces of the folds with the ratio B1: T <1 at the product-contactable surface of the bellows, since these convex surface sections too are easy to clean. This is a hybrid design of the bellows, on the one hand to be able to clean well the concave surface portions of the relatively wide folds with the ratio B: T of about 1 or greater, but to achieve a lower compensation effect per unit length, and on the other hand also at the convex surface areas To be able to clean folds with the ratio of B1: T <1 sufficiently well, but there to obtain a stronger compensation effect per unit length. This hybrid form of the bellows is recommended, as stated, especially for the jacket tube when it is contacted on the inner surface of the product.
Bei einer anderen Ausführungsform hat der Innendurchmesser des Faltenbalgs eine Größe, die zwischen annähernd dem Innendurchmesser des den Faltenbalg aufweisenden Innen- oder Mantelrohres und diesem Innendurchmesser abzüglich der Tiefe der Faltungen liegt. Abhängig vom Einsatzfall des Faltenbalgs im Mantelrohr oder in einem Innenrohr lassen sich innerhalb dieses Faltenbalg-Innendurchmesserbereiches unerwünschte Engstellen in den jeweiligen Strömungskanälen vermeiden oder minimieren.In another embodiment, the inner diameter of the bellows has a size that is between approximately the inner diameter of the bellows-containing inner or outer tube and this inner diameter minus the depth of the convolutions. Depending on the application of the bellows in the jacket tube or in an inner tube, unwanted bottlenecks in the respective flow channels can be avoided or minimized within this inner diameter of the bellows.
Bei einer Ausführungsform weist der Faltenbalg mit dem Innen- oder Mantelrohr verschweißte, im Wesentlichen kreiszylindrische Rohrendstutzen auf, die in oder über Innen- oder Mantelrohr-Abschnittsenden gesteckt sind. Die Integration des Faltenbalgs in das jeweilige Rohr ist herstellungstechnisch einfach zu beherrschen. Die Schweißstellen sind dicht und vertragen problemlos hohe Druckdifferenzen. Der Faltenbalg kann an der jeweils optimalen Position des Rohres angeordnet werden.In one embodiment, the bellows with the inner or jacket tube welded, substantially circular cylindrical Rohrendstutzen, which are inserted into or over inner or casing tube section ends. The integration of the bellows in the respective tube is easy to master manufacturing technology. The welds are tight and tolerate easily high pressure differences. The bellows can be arranged at the respectively optimal position of the tube.
Bei einer alternativen Ausführungsform ist der Faltenbalg integral in der kreiszylindrischen Wand des jeweiligen Rohres geformt, beispielsweise durch eine Walzbehandlung oder Rollbehandlung oder durch hydraulisches Umformen. Dadurch entfällt die Notwendigkeit von Schweißverbindungen.In an alternative embodiment, the bellows is integrally formed in the circular cylindrical wall of the respective tube, for example by a rolling or rolling treatment or by hydraulic forming. This eliminates the need for welded joints.
Bei einer zweckmäßigen Ausführungsform bildet ein Mantelrohr mit mehreren Innenrohren ein Röhrenwärmetauscher-Modul. Der Faltenbalg, zumindest ein Faltenbalg, kann in etwa in der Längsmitte des Wärmetauschermoduls angeordnet sein, um seine Kompensationswirkung optimal zu entwickeln. Vorzugsweise befindet sich der Faltenbalg im Mantelrohr, derart, dass die vom Produkt kontaktierbare Oberfläche des Faltenbalgs zu den im Mantelrohr untergebrachten Innenrohren weist, die glatt sein können.In an expedient embodiment, a jacket tube with a plurality of inner tubes forms a tube heat exchanger module. The bellows, at least one bellows, can be arranged approximately in the longitudinal center of the heat exchanger module in order to optimally develop its compensation effect. Preferably, the bellows is in the jacket tube, such that the surface of the bellows which can be contacted by the product faces the inner tubes accommodated in the jacket tube, which can be smooth.
Im Hinblick auf eine effiziente Reinigung ist es wichtig, wenn die Faltung zumindest an der vom Produkt kontaktierbaren Oberfläche einen derart harmonischen Oberflächenverlauf aufweist, dass dort weitgehend turbulente Strömungsverhältnisse begünstigt werden, die alle Vertiefungen des Faltenbalges vollständig erfassen. Weitgehend turbulente Strömungsverhältnisse bieten den Vorteil, keine Zonen entstehen zu lassen, in denen sich nicht nur das Produkt abzusetzen droht, sondern auch ein Reinigungsmedium keine effiziente Reinigungswirkung zu entwickeln vermag.With regard to efficient cleaning, it is important if the fold has such a harmonious surface course, at least on the surface that can be contacted by the product, that largely turbulent flow conditions are favored there, which completely cover all depressions of the bellows. Largely turbulent flow conditions offer the advantage of not creating zones in which not only the product threatens to settle, but also a cleaning medium is unable to develop an efficient cleaning effect.
Besonders zweckmäßig ist jede Faltung in einem Achsschnitt des mit dem Faltenbalg ausgestatteten Innen- und/oder Mantelrohrs aus stufenlos ineinander übergeführten Krümmungsabschnitten gebildet. Bevorzugt sind dies Kreisbogenabschnitte mit einem etwa der halben Tiefe und/oder Breite der jeweiligen Faltung entsprechenden Krümmungsradius.It is particularly expedient for each fold to be formed in an axial section of the inner and / or jacket tube equipped with the bellows, made of continuously curved sections that are transferred into one another. Preferably, these are circular arc sections having a radius of curvature corresponding approximately to half the depth and / or width of the respective fold.
Ausführungsformen des Erfindungsgegenstandes werden anhand der Zeichnungen erläutert. Es zeigen:
- Fig. 1
- einen schematischen Längsschnitt eines Moduls eines beispielhaften Röh- renwärmetauschers,
- Fig. 2
- in vergrößertem Maßstab ein Detail aus
Fig. 1 mit einem Faltenbalg in einem Mantelrohr des Röhrenwärmetauscher-Moduls, - Fig. 3
- einen Achsschnitt einer anderen Ausführungsform, beispielsweise eines Man- telrohres oder einen Innenrohres eines Moduls,
- Fig. 4
- einen Achsschnitt einer weiteren Ausführungsform eines Mantel- oder Innen- rohres eines Moduls, und
- Fig. 5
- einen Teilschnitt einer konkreteren Ausführungsform eines Moduls.
- Fig. 1
- FIG. 2 shows a schematic longitudinal section of a module of an exemplary tube heat exchanger, FIG.
- Fig. 2
- on a larger scale a detail
Fig. 1 with a bellows in a jacket tube of the tube heat exchanger module, - Fig. 3
- 6 is an axial section of another embodiment, for example a jacket tube or an inner tube of a module,
- Fig. 4
- an axial section of another embodiment of a jacket or inner tube of a module, and
- Fig. 5
- a partial section of a more concrete embodiment of a module.
Die
Das Modul M weist in
Zusätzlich könnten auch die Innenrohre 3 mit Faltenbälgen C ausgestattet sein, oder nur die Innenrohre 3, wobei dann ein Faltenbalg C in einem Innenrohr 3 gegebenenfalls innen- und/oder außenseitig eine vom Produkt kontaktierbare Oberfläche 12 darbietet.In addition, the inner tubes could be 3 equipped with bellows C, or only the
Der Faltenbalg C in
In den Zwischenräumen zwischen den axial beabstandeten Faltungen F sind entgegengesetzte Faltungen F1' vorgesehen, die an der vom Produkt kontaktierbaren Oberfläche 12 je einen konvexen Oberflächenabschnitt mit einem Krümmungsradius R2' haben, der kleiner ist als die Hälfte der Tiefe T oder Bereite B, und etwa der Hälfte der Breite B1 der Faltung F1' betragen kann.Opposite folds F1 'are provided in the spaces between the axially spaced folds F, each having on the product-contactable surface 12 a convex surface portion having a radius of curvature R2' smaller than half the depth T or ready B, and approximately can be half the width B1 of the fold F1 '.
Der Innendurchmesser des Faltenbalgs C ist mit d angegeben und entspricht annähernd dem Innendurchmesser D des Mantelrohres 1. Der Außendurchmesser D1 des Faltenbalgs C entspricht etwa dem Innendurchmesser d zuzüglich der zweifachen Tiefe T und zuzüglich der Materialstärke des Faltenbalgs C. Der Faltenbalg C besteht, vorzugsweise, wie auch das Mantelrohr 1, aus rostfreiem Stahl. Die Innenrohre 3 sind in
In der Ausführungsform in
Bei der Ausführungsform in
Im Ausführungsbeispiel von
In jeder Ausführungsform ist das Verhältnis B : T der Faltung F, F1 bei etwa 1,0 oder größer gewählt, vorzugsweise bis maximal etwa 2,0.In each embodiment, the ratio B: T of the convolution F, F1 is selected to be about 1.0 or greater, preferably to a maximum of about 2.0.
Dabei kann das Verhältnis geringfügig kleiner sein als 1, jedoch vorzugsweise stets mehr als 0,9.The ratio may be slightly smaller than 1, but preferably always more than 0.9.
Bevorzugte Ausführungsformen weisen Manteldurchmesser von bis zu 250 mm auf. Es können jedoch auch Formen mit größeren Durchmessern auftreten.Preferred embodiments have a sheath diameter of up to 250 mm. However, it can also occur shapes with larger diameters.
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009040560A DE102009040560A1 (en) | 2009-09-08 | 2009-09-08 | Tubular Heat Exchangers |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2299226A2 true EP2299226A2 (en) | 2011-03-23 |
EP2299226A3 EP2299226A3 (en) | 2016-12-07 |
EP2299226B1 EP2299226B1 (en) | 2019-11-13 |
Family
ID=43242408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP10171887.2A Active EP2299226B1 (en) | 2009-09-08 | 2010-08-04 | Tubular heat exchanger with bellows compensator |
Country Status (7)
Country | Link |
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US (1) | US20110056653A1 (en) |
EP (1) | EP2299226B1 (en) |
CN (1) | CN102012178A (en) |
BR (1) | BRPI1003503A2 (en) |
DE (1) | DE102009040560A1 (en) |
DK (1) | DK2299226T3 (en) |
ES (1) | ES2760913T3 (en) |
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ITCO20110033A1 (en) | 2011-08-25 | 2013-02-26 | Nuovo Pignone Spa | INTEGRATED HEAT EXCHANGER WITH PRESSURE COMPENSATION AND METHOD |
CN102374794A (en) * | 2011-09-25 | 2012-03-14 | 山东省舜天化工集团有限公司 | Novel carrier gas preheater |
US9200855B2 (en) | 2012-03-06 | 2015-12-01 | Honeywell International Inc. | Tubular heat exchange systems |
CN103063077B (en) * | 2013-01-22 | 2015-03-25 | 温州市氟塑设备制造厂 | Heat exchanger |
US9752835B2 (en) * | 2013-06-06 | 2017-09-05 | Honeywell International Inc. | Unitary heat exchangers having integrally-formed compliant heat exchanger tubes and heat exchange systems including the same |
US9764435B2 (en) | 2013-10-28 | 2017-09-19 | Honeywell International Inc. | Counter-flow heat exchange systems |
DE202016101495U1 (en) | 2016-03-17 | 2017-06-20 | Krones Aktiengesellschaft | pulsation dampers |
CN108519018A (en) * | 2018-05-22 | 2018-09-11 | 上海滢致节能电器有限公司 | Ripple pipe in pipe inner corrugated pipe coil pipe crosses plate leakproof connection method and structure |
JP7169923B2 (en) * | 2019-03-27 | 2022-11-11 | 日本碍子株式会社 | Heat exchanger |
CN112378274A (en) * | 2020-11-11 | 2021-02-19 | 内蒙古上都发电有限责任公司 | Compensation mechanism for air cooling tube bundle, compensation method thereof and air cooling tube bundle |
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- 2009-09-08 DE DE102009040560A patent/DE102009040560A1/en not_active Ceased
-
2010
- 2010-08-04 DK DK10171887.2T patent/DK2299226T3/en active
- 2010-08-04 ES ES10171887T patent/ES2760913T3/en active Active
- 2010-08-04 EP EP10171887.2A patent/EP2299226B1/en active Active
- 2010-09-03 US US12/875,341 patent/US20110056653A1/en not_active Abandoned
- 2010-09-06 BR BRPI1003503A patent/BRPI1003503A2/en not_active IP Right Cessation
- 2010-09-08 CN CN2010102789540A patent/CN102012178A/en active Pending
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DE60019635T2 (en) | 1999-10-26 | 2006-03-02 | Tetra Laval Holdings & Finance S.A. | PIPE EXCHANGER ARRANGEMENT |
DE10256232B4 (en) | 2002-12-02 | 2004-10-21 | Tuchenhagen Dairy Systems Gmbh | Device for extending the service life of tube bundle heat exchangers in indirectly heated UHT systems for food |
Also Published As
Publication number | Publication date |
---|---|
EP2299226B1 (en) | 2019-11-13 |
US20110056653A1 (en) | 2011-03-10 |
BRPI1003503A2 (en) | 2015-10-20 |
CN102012178A (en) | 2011-04-13 |
DK2299226T3 (en) | 2020-02-17 |
EP2299226A3 (en) | 2016-12-07 |
DE102009040560A1 (en) | 2011-03-10 |
ES2760913T3 (en) | 2020-05-18 |
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