EP0942097A1 - Echangeur de chaleur - Google Patents

Echangeur de chaleur Download PDF

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Publication number
EP0942097A1
EP0942097A1 EP98103883A EP98103883A EP0942097A1 EP 0942097 A1 EP0942097 A1 EP 0942097A1 EP 98103883 A EP98103883 A EP 98103883A EP 98103883 A EP98103883 A EP 98103883A EP 0942097 A1 EP0942097 A1 EP 0942097A1
Authority
EP
European Patent Office
Prior art keywords
steam
injector
slip
heat exchanger
riser pipe
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.)
Pending
Application number
EP98103883A
Other languages
German (de)
English (en)
Inventor
Berthold Krämer
Ludwig Hellenthal
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.)
Walzen Irle GmbH
Original Assignee
Walzen Irle GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Walzen Irle GmbH filed Critical Walzen Irle GmbH
Priority to EP98103883A priority Critical patent/EP0942097A1/fr
Publication of EP0942097A1 publication Critical patent/EP0942097A1/fr
Pending legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/02—Rolls; Their bearings
    • D21G1/0253—Heating or cooling the rolls; Regulating the temperature
    • D21G1/0266—Heating or cooling the rolls; Regulating the temperature using a heat-transfer fluid
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/10—Removing condensate from the interior of the cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/18—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning heated or cooled, e.g. from inside, the material being dried on the outside surface by conduction
    • F26B13/183—Arrangements for heating, cooling, condensate removal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F5/00—Elements specially adapted for movement
    • F28F5/02—Rotary drums or rollers

Definitions

  • the invention relates to a heat exchanger, in particular one steam-heated rotatable roller, preferably a calender roller, with a hollow roller equipped with flange pins on both sides, the flange spigot a steam line and one of a rotating siphon fed condensate drain pipe have, the riser of the siphon additionally slip steam is fed.
  • Steam-heated rollers of this type allow a particularly sensitive one Setting the desired temperature.
  • the vapor pressure can be specified the boiling point or dew point, and the steam coated areas with one above the boiling point lying temperature exchange little heat, while at one If the boiling temperature falls below the relevant surface areas Condense steam and absorb significant heat of condensation capital. However, it gets difficult, especially from circulating heat exchangers to discharge the resulting condensate.
  • the present invention is therefore based on the object, one rotating heat exchanger and more specifically a steam heated one Calender roll according to the specified genus so that with a simple, inexpensive and easily rotatable construction Arrangement is created, which by supplying slip steam in the riser pipe of the siphon is a relatively simple application of the Condensate with low pressure can be applied without that the arrangement due to increased consumption of slip steam Efficiency loses significantly.
  • a steam-heated calender roll is interrupted in the middle 1 shown, the roller body of which consists of a hollow roller 2, the flange pins 3 and 4 are assigned on both sides.
  • the flange spigot run in the indicated bearings 5, and the flange pin 3 is driven via the drive pin 6.
  • the inner shell of the hollow roller 2 is heated by the flange pin 4 fed steam, which passes the steam line 7 and in a central tube 8 opens out on the flange pin 4 by means of a Flange 10 is held, and its opposite end is supported on the flange pin 3 by means of a flange 9.
  • a central tube 8 ensures that the introduced heating steam in the end area shown on the left, the middle interrupted hollow roller 2 is released and the condensate the opposite side is withdrawn via the siphon 12, so that accumulations of non-condensable contained in the steam Gases are avoided, which is particularly the case with longer cabbage rolls could be the cause of heat transfer dreams.
  • On the Central tube 8 can also be dispensed with without further notice.
  • the condensate precipitating on the inner surface of the hollow roller 2 becomes by the rotation of the roller or the centrifugal force caused thereby held onto the inner surface of the hollow roller and flows into the a slightly larger diameter collecting groove 13.
  • this collecting groove 13 engages, as does the enlarged illustration of FIG Fig. 2 shows the riser pipe 14 of the siphon 12 with its free Opening one, the filled groove 13 under the condensate mirror lies.
  • a pressure difference is required, however, when adding Hatching steam can be kept lower to the extent that the effective specific weight of the column in the riser 14 of the condensate-steam mixture decreases.
  • slip steam is fed in by means of a slip steam line 15 central areas of the interior of the hollow roller 2 removed and towards the free mouth of the riser 14 directed to the outside. Shortly behind this mouth is the slip steam by means of an injector 16 directly into the mouth area of the Riser 14 entered.
  • the riser pipe 14 can be for example according to the diagram of FIG. 4 with a cross section, the condensate volume resulting from the intended heating output corresponds.
  • the required differential pressure 4 condensate is pushed out according to line 18 of FIG and added a small amount of slip steam. Because the line 18 is inclined negatively, if the Difficulties or problems. In contrast, the amount of the differential pressure can be relatively easily adjust and adjust. This results on line 19 of the Resistance a clear result: differential pressure 0.075 bar, slip steam 2.7%.
  • the one or more risers 14 can be as simple Drill holes in the flange pin 4 so that the whole siphon 12 is easy to manufacture and easy to assemble.
  • the amount of slip steam is due to the cross-sectional ratio of Riser pipe 14 to the injector 16 in terms of quantity advantageous and economical limited.
  • the slip steam feed achieved that the pressure chamber of the heat exchanger formed as Heat pipe proves and thus an absolutely even heat transfer ensures.
  • Another advantage is that forced injection of the slip steam into the riser 14 already with small amounts of slip steam, a significant reduction in the Drainage necessary differential pressure can be achieved. This means that very low vapor pressures, for example less than 1.5 bar absolutely, and, associated with it, low surface temperatures, can be driven without complex vacuum systems or additional water heaters installed for the low temperature range Need to become.
  • Fig. 3 A development is shown in Fig. 3, which largely with 1 corresponds to the construction, but the slip steam determined by an actuator 17 which as manual or can be formed automatically adjustable valve and thus can set the driving pressure difference. It is also possible a condensate separator with adjustable bypass valve to provide. In both cases it is also possible to use one instead Adjustability to provide a controllability. In each of these cases there is the possibility of an economic cessation of the Hatching steam consumption.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Textile Engineering (AREA)
  • Drying Of Solid Materials (AREA)
EP98103883A 1998-03-05 1998-03-05 Echangeur de chaleur Pending EP0942097A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98103883A EP0942097A1 (fr) 1998-03-05 1998-03-05 Echangeur de chaleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98103883A EP0942097A1 (fr) 1998-03-05 1998-03-05 Echangeur de chaleur

Publications (1)

Publication Number Publication Date
EP0942097A1 true EP0942097A1 (fr) 1999-09-15

Family

ID=8231535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98103883A Pending EP0942097A1 (fr) 1998-03-05 1998-03-05 Echangeur de chaleur

Country Status (1)

Country Link
EP (1) EP0942097A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115384121A (zh) * 2022-07-11 2022-11-25 苏州泓和余包装科技有限公司 瓦楞机加速器、瓦辊、瓦楞机及瓦楞机加速方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1425549A (en) * 1973-03-26 1976-02-18 Finnila P O Rotatable cylinder
DE4023871A1 (de) * 1990-07-27 1992-02-06 Voith Gmbh J M Vorrichtung zum abfuehren von kondensat aus einem mit dampf beheizten trockenzylinder
EP0768424A2 (fr) * 1995-10-13 1997-04-16 Schwäbische Hüttenwerke GmbH Cylindre chauffant

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1425549A (en) * 1973-03-26 1976-02-18 Finnila P O Rotatable cylinder
DE4023871A1 (de) * 1990-07-27 1992-02-06 Voith Gmbh J M Vorrichtung zum abfuehren von kondensat aus einem mit dampf beheizten trockenzylinder
EP0768424A2 (fr) * 1995-10-13 1997-04-16 Schwäbische Hüttenwerke GmbH Cylindre chauffant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115384121A (zh) * 2022-07-11 2022-11-25 苏州泓和余包装科技有限公司 瓦楞机加速器、瓦辊、瓦楞机及瓦楞机加速方法
CN115384121B (zh) * 2022-07-11 2023-11-07 苏州泓和余包装科技有限公司 瓦楞机加速器、瓦辊、瓦楞机及瓦楞机加速方法

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