EP0473675B1 - Perfectionnement aux cylindres secheurs dans les installations de fabrication de carton et papier - Google Patents

Perfectionnement aux cylindres secheurs dans les installations de fabrication de carton et papier Download PDF

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Publication number
EP0473675B1
EP0473675B1 EP90908537A EP90908537A EP0473675B1 EP 0473675 B1 EP0473675 B1 EP 0473675B1 EP 90908537 A EP90908537 A EP 90908537A EP 90908537 A EP90908537 A EP 90908537A EP 0473675 B1 EP0473675 B1 EP 0473675B1
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EP
European Patent Office
Prior art keywords
partition
condensates
steam
cylinder
extracting
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
EP90908537A
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German (de)
English (en)
French (fr)
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EP0473675A1 (fr
Inventor
Félix BAUMANN
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Individual
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Individual
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Publication date
Priority claimed from FR8906824A external-priority patent/FR2647127B1/fr
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Publication of EP0473675A1 publication Critical patent/EP0473675A1/fr
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    • 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
    • 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

Definitions

  • the present invention relates to an improvement to the drying cylinders which are encountered in particular in cardboard, paper or other manufacturing installations.
  • drying cylinders are heated by steam introduced under pressure into their internal cavity.
  • the present invention relates more particularly to the elimination of the condensates which form inside these drying cylinders.
  • a device described in document US-A-3,449,839 proposes two modes of recovery.
  • a first mode consists in recovering the condensates by means of a fixed scoop, kept at a distance from the internal wall of the cylindrical envelope. This device has the disadvantage of being fragile and often ineffective due to the difficulty of maintaining a precise clearance between the scoop and the cylindrical envelope.
  • a second system consists of a suction recovery, at a fixed point of the cylinder envelope. This system has the disadvantage, when the cylinder stops turning, of leaving the condensates in the cylinder. The suction head is randomly located in space and becomes completely ineffective if its stop position does not correspond to the low point.
  • the condensate extraction system according to the invention makes it possible in particular to overcome the problems associated with stopping the cylinders in a random position; it allows the extraction of condensates in any position of the cylinder, when it is stopped.
  • the extraction system according to the invention allows in particular a continuous and permanent extraction of the condensates, whether the cylinders are in motion or not. It also allows condensate extraction at all cylinder rotation speeds.
  • Another advantage of the extraction system according to the invention lies in the fact that it allows the extraction of condensates in cylinders having a grooved internal wall; that these splines are obtained by machining or by the addition of fault bars.
  • Another advantage of the condensate extraction system according to the invention lies in the fact that it imposes no maintenance constraint throughout the life of the equipment.
  • the present invention relates to a device for extracting steam condensates in the drying cylinders of cardboard or paper manufacturing installations, which cylinders have an internal cavity delimited by the internal wall of their cylindrical envelope and by bottoms at each end, which bottoms correspond to the ends of the half-shafts, where the admission of steam takes place through a central tube, and are arranged in the form of a double partition to allow the extraction of condensates by a duct arranged in the half- shaft, around said central tube, said device being characterized in that it comprises, at the periphery of the partition disposed in front of the bottom of the cylinder, a circular opening in the form of an annular orifice allowing the escape of condensates.
  • the exhaust opening is annular in shape.
  • the exhaust opening is in the form of notches arranged at the periphery of the partition.
  • the condensate exhaust zone behind the partition, is in a frustoconical form, so as to form a chamber for expansion and atomization of the condensates, which are easier to evacuate, at the level of the axis of the cylinder, by the corresponding end half-shaft.
  • the partition is housed, at the end of the cylinder, in a bore arranged in the internal cylindrical wall; the diameter of the solid part of the partition corresponds substantially to the internal diameter of the cylinder.
  • the cylinder shown in Figure 1 has a cylindrical envelope 1 which can extend over a length of 1.5 to 9 meters, and more, depending on the installations.
  • the diameter of this cylindrical envelope can reach 2 meters in very large installations.
  • each end of the envelope 1 there is an axis or half-shaft 2 of support fixed by any suitable means on this envelope.
  • the half-shaft 2d in FIG. 1 is hollow and is traversed by a tube 3 which conveys the steam under pressure to bring it into the internal cavity 4 of the cylinder.
  • a space or conduit 5 which makes it possible to put the internal cavity 4 of the cylinder into communication with the outside of this cylinder, where the mixture of condensates and steam, which comes from said internal cavity.
  • This partition 10 is fixed, by appropriate means, of the screw type 11, on the bottom 12 of the cylinder, at the end of the half-shaft 2 d . It is kept apart from the bottom 12, at the internal end of the half-shaft 2 d , to allow the passage of the condensates, by means detailed below.
  • the condensates escape through the central duct 5 of the half-shaft 2, under the pressure of the steam prevailing in the cavity 4.
  • This partition 10 forms a shutter or a double partition.
  • a partition 10 is disposed at each end of the cavity 4 of the cylinder.
  • its diameter is substantially less than the diameter of the internal cylindrical wall 8; the difference in diameters is of the order of 3 mm; it may depend on the size of the cylinders.
  • the tube 3 for supplying steam under pressure passes through the partition 10 d in order to bring this steam into the internal cavity 4 of the cylinder; it is tightly fixed to this partition 10 by any suitable means. Between this partition 10 and the outside, there is firstly a frustoconical chamber 13, then the conduit 5 for condensate discharge. Room 13 is actually a condensate expansion and atomization chamber. This atomization is obtained by means of a reduced space between the peripheral edge 14 of the partition 10 and the internal wall 8 of the cylinder.
  • FIG. 2 shows, on a larger scale, a preferential arrangement of the opening 9 for condensate discharge, in the form of an annular orifice, between the peripheral edge 14 of the partition 10 and the internal cylindrical envelope 8 of the cylinder.
  • the internal cylindrical wall 8 comprises, at its end, facing the peripheral edge 14 of the partition 10, a bore forming a cylindrical cavity 15 of larger diameter than that of the partition 10 and the internal wall 8.
  • This bore forms a cylindrical wall 16 delimited, at the end of the casing 8, by an annular surface 17, and by the bottom 12 at the end of the half-shaft 2.
  • the partition 10 is positioned substantially at equal distance from the surfaces 17 and 18.
  • the partition 10 is housed in this cylindrical cavity 15 formed by the bore 16, preferably at each end of the cylinder.
  • the diameter of the partition 10 corresponds substantially, FIG. 2, to the diameter of the cylindrical internal wall 8.
  • the space between the peripheral edge 14 of the partition 10 and the cylindrical wall 16 is of the order of 1.5 mm.
  • This space constitutes the opening 9 for condensate discharge. It is, as shown in Figure 2, in the form of an annular orifice.
  • the section of the condensate exhaust opening 9 is arranged as a function of the diameter of the cylinder.
  • the exhaust opening 9 in the form of an annular orifice, shown in FIG. 2 is suitable for cylinders of relatively small diameter of the order of 200 mm; for larger diameters, the opening 9 is reduced by means described below, in particular with reference to FIGS. 3 and 4.
  • a sort of baffle for the condensates C cover the entire internal cylindrical wall 8 when the drying rollers are in operation. These condensates tend to escape into the cylindrical cavity 15 and, from this cavity, they are propelled by the pressurized steam which occupies the cavity 4, out of the latter, passing between the peripheral edge 14 of the partition 10 and the cylindrical wall 16 first, then by the frustoconical chamber 13 and finally the cavity 5 of the half-shaft 2 d , before being collected at the end of the latter, by means not shown.
  • the atomization transforms these condensates into a mist, which mist is easier to evacuate towards the center of the bearing 2 by the conduit 5; it is in fact approximately 98% vapor and approximately 2% water transformed into fine droplets.
  • FIG 2 the attachment of the partition 10 on the bearing 2 by means of screws 11, three in number for example, with the interposition of a spacer 18 which ensures precise positioning of said partition 10 relative to said bearing 2 and in particular with respect to the annular face of the bottom 12.
  • the partition 10 can be centered in the bore 16 by means of protrusions, not shown, three in number for example, attached to its periphery. These outgrowths can be achieved by means of machined welding spots.
  • FIG. 3 shows the shape that the peripheral edge 14 of the partition 10 can take.
  • the peripheral border 14 has a notch 19 which can be in a triangular shape 20 or in a sinusoidal shape 21, as shown on each of the portions of the partition, FIG. 3.
  • This arrangement at the peripheral edge of the partition 10 makes it possible to better distribute the condensate exhaust section and to better match this section to the real needs of the cylinders according to their size in particular, and also according to the quantities of steam injected. .
  • the height has crenellations, fig. 3 is of the order of 1.5 mm, and it is preferably kept at this value regardless of the diameters of the cylinders.
  • the variation in the section of the exhaust opening 9 is obtained by the dimensions of the notches 19.
  • crenellations 19 are arranged over the entire periphery of the partition 10, both in the embodiment of Figure 1 and that of Figure 2; they provide a possibility of reduction of the annular outlet opening of the condensate, maintaining a sufficient height.
  • the diameter of the partition 10, taken at the bottom of the notches, is substantially equal to the internal diameter of the cylinder.
  • This exhaust opening 9 regulates the speed of the condensate in the crenellations 19, and its transformation into mist, by atomization.
  • Figure 4 a section of the end of the half-shaft 2, which end is in the form of a pin 22.
  • the end of the steam inlet tube 3 is provided with a sleeve 23 which comprises for example three fins 24 for wedging inside the duct 5. It can be seen, in FIG. 1, that the sleeve 23 is positioned inside the cavity 5 of the journal, set back from its end face 25 to avoid any incident on the tube 3 during handling and / or shipping of the cylinder.
  • this sleeve is threaded with a pitch to the right or to the left depending on the direction of rotation of the cylinder, to make the connection with the rotary joint of a gearbox. steam, not shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Paper (AREA)
EP90908537A 1989-05-22 1990-05-21 Perfectionnement aux cylindres secheurs dans les installations de fabrication de carton et papier Expired - Lifetime EP0473675B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8906824A FR2647127B1 (fr) 1989-05-22 1989-05-22 Procede d'extraction de condensat dans les cylindres secheurs de fabrication de papier, de carton etc. et moyens pour la mise en oeuvre du procede
FR8906824 1989-05-22
FR898915587A FR2654755B2 (fr) 1989-05-22 1989-11-21 Perfectionnement aux cylindres secheurs dans les installations de fabrication de papier.
FR8915587 1989-11-22

Publications (2)

Publication Number Publication Date
EP0473675A1 EP0473675A1 (fr) 1992-03-11
EP0473675B1 true EP0473675B1 (fr) 1993-04-21

Family

ID=26227346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90908537A Expired - Lifetime EP0473675B1 (fr) 1989-05-22 1990-05-21 Perfectionnement aux cylindres secheurs dans les installations de fabrication de carton et papier

Country Status (10)

Country Link
US (1) US5271456A (es)
EP (1) EP0473675B1 (es)
JP (1) JPH04505350A (es)
KR (1) KR960011117B1 (es)
BR (1) BR9007388A (es)
CA (1) CA2053861A1 (es)
DE (1) DE69001434T2 (es)
ES (1) ES2029974T3 (es)
FR (1) FR2654755B2 (es)
WO (1) WO1990014468A1 (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5888477A (en) 1993-01-29 1999-03-30 Aradigm Corporation Use of monomeric insulin as a means for improving the bioavailability of inhaled insulin
US5671549A (en) * 1995-06-22 1997-09-30 Talleres Irunes, S.A. Steam-heated corrugating rollers
US5899264A (en) * 1997-09-17 1999-05-04 Marquip, Inc. Steam supply and condensate removal apparatus for heated roll
FR2780991B1 (fr) * 1998-07-10 2000-09-22 Felix Baumann Cylindre secheur avec dispositif d'evacuation des vapeurs et condensats, pour la fabrication de papier ou carton
US6877246B1 (en) * 2003-12-30 2005-04-12 Kimberly-Clark Worldwide, Inc. Through-air dryer assembly
US8606138B2 (en) * 2009-08-05 2013-12-10 Ricoh Company, Limited Cooling device having a turbulence generating unit
KR101033832B1 (ko) * 2009-09-01 2011-05-13 한국에너지기술연구원 다중유로용 실린더 드럼 건조기 및 건조기 제작방법
KR101335671B1 (ko) * 2013-06-19 2013-12-03 코오롱환경서비스주식회사 패들 건조기

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1575249A (en) * 1923-12-15 1926-03-02 Beloit Iron Works Apparatus for removing condensate from revolving driers
US2045634A (en) * 1934-07-14 1936-06-30 Hervey G Cram Mounting of siphon pipes and the like
US3449839A (en) * 1967-12-21 1969-06-17 Beloit Corp Rotary steam joint and condensate scavenger therefor
DE1775394A1 (de) * 1968-08-06 1971-07-08 Kalle Ag Heiz- oder kuehlbare Walze
US3675337A (en) * 1970-11-12 1972-07-11 Beloit Corp Dryer drum
US4252184A (en) * 1980-03-10 1981-02-24 Kimberly-Clark Corporation Control of oil distribution in heated embossing rolls
DE3143347A1 (de) * 1981-10-31 1983-05-11 J.M. Voith Gmbh, 7920 Heidenheim Trockenzylinder

Also Published As

Publication number Publication date
FR2654755A2 (fr) 1991-05-24
ES2029974T1 (es) 1992-10-16
FR2654755B2 (fr) 1993-04-30
EP0473675A1 (fr) 1992-03-11
WO1990014468A1 (fr) 1990-11-29
KR960011117B1 (ko) 1996-08-20
KR920701568A (ko) 1992-08-12
BR9007388A (pt) 1992-03-24
DE69001434T2 (de) 1993-11-18
DE69001434D1 (de) 1993-05-27
ES2029974T3 (es) 1993-11-01
US5271456A (en) 1993-12-21
JPH04505350A (ja) 1992-09-17
CA2053861A1 (fr) 1990-11-23

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