EP2299226B1 - Röhrenwärmetauscher mit Faltenbalg-Kompensator - Google Patents

Röhrenwärmetauscher mit Faltenbalg-Kompensator Download PDF

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Publication number
EP2299226B1
EP2299226B1 EP10171887.2A EP10171887A EP2299226B1 EP 2299226 B1 EP2299226 B1 EP 2299226B1 EP 10171887 A EP10171887 A EP 10171887A EP 2299226 B1 EP2299226 B1 EP 2299226B1
Authority
EP
European Patent Office
Prior art keywords
tube
bellows
product
heat exchanger
casing
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.)
Active
Application number
EP10171887.2A
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German (de)
English (en)
French (fr)
Other versions
EP2299226A2 (de
EP2299226A3 (de
Inventor
Jörg Zacharias
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.)
Krones AG
Original Assignee
Krones AG
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Publication of EP2299226A3 publication Critical patent/EP2299226A3/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • 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.
  • the inner and outer tube congruent bellows which contain substantially zig-zag-shaped, rounded at the inflection points convolutions, which are similar in cross-section.
  • the ratio between the axial width and the radial depth is significantly more than 2.
  • the straight flanks and the relatively sharp curves of the inflection points of the folds create dead spaces in which impurities can settle and which are very difficult to clean to produce a hygienic condition in the bellows.
  • the compensation effect occurs predominantly in the inflection points, which are thus subjected to high local stresses.
  • A1 known compensating bellows for pipelines is the folds having inner tube protected by a smooth continuous outer tube. There is no product flow between the inner and outer tubes.
  • narrower V-shaped folds are provided at intervals between substantially trapezoidal, relatively wide folds.
  • the ratio B: T is clearly greater than 2
  • the ratio B: T is 1 in the relatively narrow convolutions.
  • the relatively small radii of curvature of the trapezoidal, relatively further folds create dead spaces in which impurities threaten to settle and which are difficult to clean.
  • the compensation effect takes place predominantly in the radii of curvature between the straight ridges of the trapezoidal folds and the straight edges of the relatively narrow folds, so that local high tensions occur there.
  • the straight edges of the relatively narrower folds and the straight ridges and bottoms of the trapezoidal, relatively further folds take part in the compensation hardly.
  • a known heat exchanger tube are in the embodiment of Fig. 2 a, 2 b helical like folds with V-shaped cross-section and relatively narrow curves provided in the inflection points.
  • the ratio between B: T is about 1.5.
  • 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 with good compensation effect of the bellows for a product against product flow guide hygienically cleanable.
  • a plurality of axially successive, substantially similar folds are provided inwardly or outwardly, which are formed on the product contactable surface with the ratio of B: T of about 1 or greater, and are provided in the intermediate intervals folds, the are formed with a ratio of B1: T ⁇ 1.
  • the convexly curved surfaces of the folds with the ratio B1: T ⁇ 1 can be arranged on the product-contactable surface of the bellows, because these convex surface sections too are easy to clean.
  • 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.
  • 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.
  • 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, 1b 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 with 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
EP10171887.2A 2009-09-08 2010-08-04 Röhrenwärmetauscher mit Faltenbalg-Kompensator Active EP2299226B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009040560A DE102009040560A1 (de) 2009-09-08 2009-09-08 Röhrenwärmetauscher

Publications (3)

Publication Number Publication Date
EP2299226A2 EP2299226A2 (de) 2011-03-23
EP2299226A3 EP2299226A3 (de) 2016-12-07
EP2299226B1 true EP2299226B1 (de) 2019-11-13

Family

ID=43242408

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10171887.2A Active EP2299226B1 (de) 2009-09-08 2010-08-04 Röhrenwärmetauscher mit Faltenbalg-Kompensator

Country Status (7)

Country Link
US (1) US20110056653A1 (es)
EP (1) EP2299226B1 (es)
CN (1) CN102012178A (es)
BR (1) BRPI1003503A2 (es)
DE (1) DE102009040560A1 (es)
DK (1) DK2299226T3 (es)
ES (1) ES2760913T3 (es)

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CN102278907B (zh) * 2011-05-16 2012-09-05 哈尔滨工业大学 外凸式非对称型波节管换热器
ES2398978B2 (es) * 2011-07-14 2013-10-10 Antonio MORENO GARCÍA Dispositivo intercambiador térmico mejorado para tratamiento de líquidos y otros.
ITCO20110033A1 (it) 2011-08-25 2013-02-26 Nuovo Pignone Spa Scambiatore di calore integrato con compensazione della pressione e metodo
CN102374794A (zh) * 2011-09-25 2012-03-14 山东省舜天化工集团有限公司 一种新型载气预热器
US9200855B2 (en) 2012-03-06 2015-12-01 Honeywell International Inc. Tubular heat exchange systems
CN103063077B (zh) * 2013-01-22 2015-03-25 温州市氟塑设备制造厂 一种热交换器
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 (de) 2016-03-17 2017-06-20 Krones Aktiengesellschaft Pulsationsdämpfer
CN108519018A (zh) * 2018-05-22 2018-09-11 上海滢致节能电器有限公司 波纹管热交换器内波纹管盘管的过板防漏连接方法及结构
JP7169923B2 (ja) * 2019-03-27 2022-11-11 日本碍子株式会社 熱交換器
CN112378274A (zh) * 2020-11-11 2021-02-19 内蒙古上都发电有限责任公司 用于空冷管束的补偿机构及其补偿方法及空冷管束

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Also Published As

Publication number Publication date
DK2299226T3 (da) 2020-02-17
BRPI1003503A2 (pt) 2015-10-20
US20110056653A1 (en) 2011-03-10
DE102009040560A1 (de) 2011-03-10
CN102012178A (zh) 2011-04-13
ES2760913T3 (es) 2020-05-18
EP2299226A2 (de) 2011-03-23
EP2299226A3 (de) 2016-12-07

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