EP0947628B1 - Rouleau - Google Patents

Rouleau Download PDF

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Publication number
EP0947628B1
EP0947628B1 EP99105994A EP99105994A EP0947628B1 EP 0947628 B1 EP0947628 B1 EP 0947628B1 EP 99105994 A EP99105994 A EP 99105994A EP 99105994 A EP99105994 A EP 99105994A EP 0947628 B1 EP0947628 B1 EP 0947628B1
Authority
EP
European Patent Office
Prior art keywords
roller
pump
heat transfer
transfer fluid
heat exchanger
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.)
Expired - Lifetime
Application number
EP99105994A
Other languages
German (de)
English (en)
Other versions
EP0947628A2 (fr
EP0947628A3 (fr
Inventor
Gottfried Hendrix
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.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent 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 Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0947628A2 publication Critical patent/EP0947628A2/fr
Publication of EP0947628A3 publication Critical patent/EP0947628A3/fr
Application granted granted Critical
Publication of EP0947628B1 publication Critical patent/EP0947628B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D21F5/022—Heating the cylinders
    • D21F5/028—Heating the cylinders using steam
    • 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
    • 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

Definitions

  • the invention relates to a roller with a roller shell, with a heat exchanger inside the roll shell is arranged and with a supply arrangement for the inflow and outflow of an external heat transfer fluid is connected to its primary side and with a Circuit of an internal heat transfer fluid, which is the secondary side of the heat exchanger and the roll shell.
  • Such a roller is known from DD 225 767 A1.
  • rollers are used in calenders to make paper webs or to process other material webs. They work with other rollers to form one Nips together.
  • Another area of application is cooling or heating a material web, for example a paper web, also outside of a nip.
  • the need to cool the roller arises not only when the web of material, for example the paper web to be cooled. In some cases cooling is also necessary if the roller has elastic cover and heat by the Flexing of the elastic cover occurs during operation, must be dissipated to damage the surface to avoid.
  • the roller is heated necessary, for example when a paper web is in a calender not only with increased pressure, but also also subjected to an elevated temperature shall be.
  • the heat transfer fluid for example a cooling water or heating steam
  • the heat transfer fluid not only direct into the roller, but the effect to exercise via a heat exchanger.
  • DD 225 767 A1 will be the cycle for maintain the internal heat transfer fluid during cooling, that the heat transfer fluid in a gas and is in a liquid phase. It condenses on the heat exchanger and is then attached to the inner wall of the Rolled jacket hurled where it evaporates. The steam in turn gets to the heat exchanger.
  • the object of the invention is to influence the temperature to design the roller differently.
  • This task is performed on a roller of the type mentioned Art solved in that the cycle one in the Has arranged roller pump arrangement.
  • the inner Heat transfer fluid is forced to circulate. Despite this The only advantage outside the roller is a rotating union necessary for the external heat transfer fluid. Since the heat transfer fluid only flows through the heat exchanger, but not the roller shell, you can think of that Make heat transfer fluid less demanding.
  • the roller can also be used as a heating roller. This can the roller is also operated at lower temperatures be condensed in the steam because the steam only must be passed through the heat exchanger.
  • the pump arrangement is preferably stationary in the Roller arranged and rotates with it. Accordingly are none in the circuit for the internal heat transfer fluid moving connections necessary. The risk that one such a connection is not leaky.
  • the attachment of the pump is also simplified. Movable mounting of the pump is not necessary.
  • the pump arrangement is advantageously on one end face arranged the roller. It's easily accessible there, for example for maintenance purposes. Usually stands there is still enough space at the front of the roller Available.
  • the pump arrangement one Surrounding the roll neck in a ring. This has the advantage that thereby the weight distribution in the circumferential direction is not uneven by the pump arrangement. Accordingly, there is a risk of imbalance small.
  • the pump arrangement at least one pump that is radial at least is as far out as the radially outermost part of the cycle. This means that the pump has practically no suction power against centrifugal force. In the in most cases the heat transfer fluid of the pump will then fed by the centrifugal force. Alternatively the heat transfer fluid is always in this configuration at the pump inlet.
  • the pump preferably has an externally operable one Work item on.
  • the working element is a piston that moves back and forth or a rotating element, for example a Impeller that is rotated.
  • Other Pump types are conceivable, for example gear pumps or centrifugal pumps.
  • the work element must be in all Pumps are driven in some way. If now the drive takes place from the outside, i.e. from outside the roller, then the roller must drive the pump no additional energy can be supplied. This saves further connections.
  • the working element when the roller rotates with a stationary drive arrangement interacts. Therefore one uses the Rotational movement of the roller to make a relative movement generate between the pump and the drive assembly. The work element can then be moved via this relative movement the pump are driven.
  • the drive wheel turns and the faster the higher the speed of the Roller is. This increases the pump performance at higher ones Speeds, which is often required because at higher speeds a correspondingly higher working speed is present, i.e. a greater length of the too treat material web per unit of time is.
  • the pump is a different one Pump is, for example a piston pump
  • the plunger or the piston with a Restoring force for example a return spring is loaded, then it is sufficient if the control curve of acts in one direction on the plunger.
  • the pestle can also be operated in that the pump arrangement when rotating the roller on a rotating one Drive wheel rests. Whenever the pestle under that Drive wheel, it is pressed inwards. The the same effect can be achieved, for example, if you have the pump arrangement with a revolving Belt that surrounds at least one position from the Pump arrangement is lifted off. Then the pestle can be pushed out of the pump again.
  • a Revolving force for example a return spring
  • the external heat transfer fluid is advantageously supplied to the heat exchanger centrally and the drain radially further out. This has the advantage that the centrifugal force a certain pumping effect on the outside Heat transfer fluid is exerted. This makes it easier Control of the heat transfer fluid.
  • the secondary side of the heat exchanger several axially parallel tubes on, which are arranged in an exchange chamber, the communicates with the feed port.
  • a heat exchanger arrangement can be relatively large exchange surface for heat transfer from the outside to the inner heat transfer fluid or vice versa.
  • the arrangement has a heated roller above furthermore the advantage that steam acts as an external heat transfer fluid is used on the outside of the pipes can condense to heat on the through the pipes to release flowing internal heat transfer fluid. The condensate would in itself worsen the heat transfer. Because of the rotation of the roller, it will But condensate is immediately thrown off the pipes. The heat transfer surfaces are therefore "self-cleaning".
  • the Heat exchanger a through which the inner heat transfer fluid can flow Manifold on which is a flow path of the outer heat transfer fluid, the manifold has several openings, the circumferential and Are distributed axially.
  • Such an arrangement is preferably used for chill rolls. That in that Manifold cooled heat transfer fluid through the Forced pipe promoted using the pump assembly is then partially under the pressure of the pump and partially under the action of centrifugal force outwards against the radial inside of the roll shell hurled or sprayed. There can then be heat take up.
  • Fig. 1 shows the left in a schematic longitudinal section End of a cooling roller 1.
  • the roller 1 has a roller shell 2, which carries an elastic cover 3.
  • the Roller 1 acts with a counter roller 4 for the treatment of a Material web not shown together.
  • the cover 3 is periodically tumbled and heated yourself. The heat generated must be dissipated.
  • a heat exchanger 5 is inside the Roll shell 2 arranged, so in a cavity 6, which is surrounded by the roll shell 2.
  • the cavity 6 is terminated at both ends by end plates 7, which are screwed to the roller shell 2.
  • the cavity 6 is thus liquid-tight.
  • the heat exchanger 5 is with a supply arrangement 8 connected, which is a feed line 9 for a heat transfer medium, for example chilled water, and one Has discharge line 10 for the removal of this water.
  • a pump 11 is shown schematically Controller 12 feeds the feed line 9, and a tank 13, in which the water is pumped back again. Not A cooling device is shown in more detail. With help of the controller 12 or the pump 11 can by Heat exchanger 5 determines the amount of cooling water flowing become.
  • the feed line 9 runs centrally here, i.e. in the Area of rotation of the roller 1.
  • the discharge line 10 surrounds the feed line 9, so that at one Turning point 14, which is also at the other end of the roller 1 can be arranged due to a small promotional effect the centrifugal force.
  • the discharge line 10 is surrounded by a distribution pipe 15, which has openings 16 which are in the axial direction and are arranged distributed in the circumferential direction.
  • the result The heat exchanger formed rotates with the roll shell Second
  • a pump arrangement 17 screwed on.
  • the pump arrangement 17 is above a Feed channel 18 with the cavity 6 in connection.
  • the feed channel 18 is arranged so that it in the cavity 6 just inside the radial inner wall of the roll shell 2 opens.
  • the feed channel 18 is in connection with the suction connection of the pump arrangement.
  • the pressure connection of the pump arrangement 17 is via a Delivery channel 19 with the interior of the manifold in connection.
  • the pump arrangement 17 has in the present exemplary embodiment several individual pumps on the circumferential direction are evenly distributed. Every single pump is designed as a rotary pump, for example as Vane pump. Each pump has a gear 21 as Drive element that meshes with a toothed ring 22, which is arranged stationary. So if the roller 1 rotates, then the gears 21 roll in the toothed ring and drive the working element via a shaft 23 the rotary pump, for example the impeller.
  • the pumps of the pump arrangement 17 are radially relative far out, i.e. at least as far as the radially outermost one Part of the circuit of the internal heat transfer fluid 20. Accordingly, the pump assembly 17 do not suck in against the centrifugal force, only promote against the centrifugal force because the heat transfer fluid 20 are pressed radially inwards again must to get to the heat exchanger.
  • the toothed ring 22 and the gear 21 form a drive arrangement, the pump assembly 17 in dependence from the speed of the roller 8 drives from the outside.
  • the heat exchanger 5 has a variety of Tubes 24 on the inner heat transfer fluid (Waser), which is fed via the conveyor channel 19, is flowed through. This is done at the front ends Distribution rooms 25 for evenly distributing the Water provided on the tubes 24.
  • steam forms the external heat transfer fluid, which through the Feed line 9 is supplied and in an exchange chamber 27 arrives, in which the tubes 24 are arranged.
  • the steam gives its heat to the internal heat transfer fluid in the tubes 24 and condenses.
  • condensing Steam, i.e. water 20 collects below the effect of the centrifugal force outside, i.e. on the inside of the roll shell 2, the peripheral holes 26 is enforced.
  • the holes 26 in turn are in turn via the feed channels 18 with the pump arrangement 17 in connection.
  • the pump assembly 17 promotes the inner heat transfer medium via the delivery channels 19, for example also water, on the secondary side of the heat exchanger 5, namely inside of the tubes 24, which in turn are connected to the bores 26 are.
  • the primary side of the heat exchanger is through the cavity 27 formed in which the tubes 24 are arranged. If water now flows through the tubes 24, then condenses the steam on the outer surface of the pipes. This usually worsens heat transfer, is not critical in the present case, however, because the rotation of the roller 1 any water that at the Surface of the tubes 24 condensed, spun off becomes. So the heat exchanger surfaces are "Self-cleaning".
  • the pump arrangement 17 several pumps 30, which act as a piston pump are trained. Every piston pump has a plunger 31.
  • a friction wheel 32 lies on the outer Surface 33 of the pump assembly 17. If so now Tappet comes under the friction wheel 22, then it becomes inward emotional. As soon as he has passed the friction wheel 32, it is represented by the power of one not shown Return spring pushed out again. Thus each pump 30 actuated once during one revolution. If you use several friction wheels 32, then you can also get a larger number of pump games per Carry out one revolution.
  • the pump arrangement can also be used retrofit existing rollers.

Landscapes

  • Drying Of Solid Materials (AREA)
  • Paper (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Claims (10)

  1. Rouleau (1) comprenant une enveloppe de rouleau (2), un échangeur de chaleur (5) qui est disposé à l'intérieur de l'enveloppe de rouleau (2) et qui est connecté vers son côté primaire à un agencement d'alimentation (8) pour l'alimentation et l'évacuation d'un fluide caloporteur extérieur, et un circuit de fluide caloporteur intérieur, qui inclut le côté secondaire de l'échangeur de chaleur (5) et l'enveloppe de rouleau (2), caractérisé en ce que le circuit présente un agencement de pompe (17) disposé dans le rouleau (1).
  2. Rouleau selon la revendication 1, caractérisé en ce que l'agencement de pompe (17) est disposé fixement dans le rouleau (1) et tourne avec lui.
  3. Rouleau selon la revendication 1 ou 2, caractérisé en ce que l'agencement de pompe (17) est disposé sur un côté de bout du rouleau (1).
  4. Rouleau selon la revendication 3, caractérisé en ce que l'agencement de pompe (17) entoure un tourillon de rouleau (29) suivant une forme annulaire.
  5. Rouleau selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'agencement de pompe (17) présente au moins une pompe (30) qui se trouve radialement au moins aussi loin à l'extérieur que la partie la plus externe radialement du circuit.
  6. Rouleau selon la revendication 5, caractérisé en ce que la pompe (30) présente un élément de travail (31, 21) actionnable depuis l'extérieur.
  7. Rouleau selon la revendication 6, caractérisé en ce que l'élément de travail coopère avec un agencement d'entraínement stationnaire (22, 32) lors de la rotation du rouleau (1).
  8. Rouleau selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'alimentation du fluide caloporteur extérieur à l'échangeur de chaleur (5) s'effectue centralement et l'évacuation s'effectue radialement davantage vers l'extérieur.
  9. Rouleau selon la revendication 8, caractérisé en ce que le côté secondaire de l'échangeur de chaleur (5) présente plusieurs tubes (24) d'axes parallèles, qui sont disposés dans une chambre d'échangeur (27) connectée au raccord d'alimentation.
  10. Rouleau selon la revendication 8, caractérisé en ce que l'échangeur de chaleur (5) présente un tube distributeur (15) pouvant être parcouru par le fluide caloporteur intérieur, lequel entoure un passage d'écoulement du fluide caloporteur extérieur, le tube distributeur (15) présentant plusieurs ouvertures (16) qui sont réparties dans le sens périphérique et axial.
EP99105994A 1998-04-01 1999-03-25 Rouleau Expired - Lifetime EP0947628B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19814597 1998-04-01
DE19814597A DE19814597C1 (de) 1998-04-01 1998-04-01 Walze

Publications (3)

Publication Number Publication Date
EP0947628A2 EP0947628A2 (fr) 1999-10-06
EP0947628A3 EP0947628A3 (fr) 2000-04-19
EP0947628B1 true EP0947628B1 (fr) 2002-09-04

Family

ID=7863240

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99105994A Expired - Lifetime EP0947628B1 (fr) 1998-04-01 1999-03-25 Rouleau

Country Status (3)

Country Link
US (1) US6250376B1 (fr)
EP (1) EP0947628B1 (fr)
DE (2) DE19814597C1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6683284B2 (en) 2002-03-22 2004-01-27 Metso Paper Karlstad Ab Thermal roll for papermaking with a fluid circulation system and method therefor
US8261465B2 (en) * 2002-09-10 2012-09-11 Voith Paper Patent Gmbh Equipment and method for producing and/or treating a fibrous web
DE10257496B3 (de) * 2002-12-10 2004-10-14 Bachofen & Meier Ag Vakuum-Kühlwalze
DE102005000794A1 (de) * 2005-01-05 2006-07-13 Voith Paper Patent Gmbh Vorrichtung und Verfahren zur Herstellung und/oder Veredelung einer Faserstoffbahn
DE102005000795A1 (de) * 2005-01-05 2006-07-13 Voith Paper Patent Gmbh Vorrichtung und Verfahren zur Herstellung und/oder Veredelung einer Faserstoffbahn
CA2854299C (fr) 2014-06-12 2021-03-23 Alexander D. Kanaris Rouleau d'entrainement de transporteur dote de dispositifs refroidisseurs
US10263232B2 (en) * 2015-11-20 2019-04-16 Sumitomo Chemical Company, Limited Nonaqueous electrolyte secondary battery separator heating device and nonaqueous electrolyte secondary battery separator production method
JP2017101826A (ja) * 2015-11-20 2017-06-08 住友化学株式会社 加熱ローラー及びフィルム製造方法
ITUA20161465A1 (it) * 2016-03-08 2017-09-08 Gtk Timek Group Sa Rullo termico/aspirante o soffiante.
WO2020235097A1 (fr) * 2019-05-23 2020-11-26 Okubo Yasuhiko Rouleau de refroidissement

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE225767C (fr)
US1820074A (en) * 1928-12-03 1931-08-25 Seiberling Rubber Co Means for cooling mill rolls
US1897613A (en) * 1930-03-12 1933-02-14 Jensen Aage Apparatus for treating liquids
US2883151A (en) * 1954-01-26 1959-04-21 Curtiss Wright Corp Turbine cooling system
US3120867A (en) * 1961-07-27 1964-02-11 Nash John Crandon Heat exchange roll
DE1604248A1 (de) * 1965-05-20 1970-08-27 Winkler Fallert & Co Maschf Kuehl- und Heizwalze
US3711074A (en) * 1970-05-28 1973-01-16 Thorn Heating Ltd Heat exchanger apparatus
DE2902955C2 (de) * 1979-01-22 1982-09-16 Escher Wyss AG, Zürich Durchbiegungseinstellwalze
DD225767A1 (de) * 1983-12-08 1985-08-07 Koethen Ing Hochschule Kuehlwalze, insbesondere zum praegen und gravieren von folien
DE19624737A1 (de) * 1996-06-21 1998-01-02 Voith Sulzer Finishing Gmbh Walze
FR2750710B1 (fr) * 1996-07-08 1998-11-27 Dubix De Souza Snc Machine a repasser a cylindre chauffant et a circulation d'air
DE19707876C2 (de) * 1997-02-27 2002-09-26 Voith Paper Patent Gmbh Walzenanordnung
DE19809080C2 (de) 1997-12-17 2003-08-14 Voith Paper Patent Gmbh Dampfbeheizte Walze
DE19756152C2 (de) 1997-12-17 2002-06-27 Voith Paper Patent Gmbh Dampfbeheizte Walze

Also Published As

Publication number Publication date
EP0947628A2 (fr) 1999-10-06
EP0947628A3 (fr) 2000-04-19
US6250376B1 (en) 2001-06-26
DE19814597C1 (de) 1999-10-14
DE59902519D1 (de) 2002-10-10

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