EP0491715B1 - Support structure for the fastening of a steam chest - Google Patents

Support structure for the fastening of a steam chest Download PDF

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Publication number
EP0491715B1
EP0491715B1 EP90911992A EP90911992A EP0491715B1 EP 0491715 B1 EP0491715 B1 EP 0491715B1 EP 90911992 A EP90911992 A EP 90911992A EP 90911992 A EP90911992 A EP 90911992A EP 0491715 B1 EP0491715 B1 EP 0491715B1
Authority
EP
European Patent Office
Prior art keywords
steam chest
chest
steam
machine frame
fastening
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
EP90911992A
Other languages
German (de)
French (fr)
Other versions
EP0491715A1 (en
Inventor
Martti Ensio Olavi Partio
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.)
Deublin-Sint Srl
Deublin Italiana SRL
Original Assignee
PARTIO ENGINEERING KY
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 PARTIO ENGINEERING KY filed Critical PARTIO ENGINEERING KY
Publication of EP0491715A1 publication Critical patent/EP0491715A1/en
Application granted granted Critical
Publication of EP0491715B1 publication Critical patent/EP0491715B1/en
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
    • D21F5/021—Construction of the cylinders

Definitions

  • the construction according to the invention enables an improved support for the steam chest of a drying cylinder against the machine frame, and thus it is possible to install the steam chest with substantially greater care and accuracy in comparison to what is possible with a conventional rod support or cantilever support.
  • Figs. 1 to 3, 4a and 4b are prior art constructions.
  • Figs. 5a and 5b show the construction according to the invention.
  • the constructions in use presently include supplying steam to the drying cylinder through a steam chest fastened to the end of the cylinder shaft (figure 1).
  • the steam chest 2 is supported through support bars 1 against the machine frame.
  • Steam is conducted to the cylinder through the steam cylinder shaft 3.
  • Condensate and discharge steam is conducted in the horizontal condensate discharge pipe 4 to the condensate section of the steam chest.
  • condensate chests There are also constructions with a connection structure for the condensate only, so called condensate chests. It is however common to have the steam and condensate joints in a common steam chest.
  • the most common construction of the steam chest is shown in figure 2.
  • the steam chest 2 is supported against the machine frame with two rods 1.
  • Figure 3 shows a cantilever support construction 5.
  • the U.S. Patent No. 4,606,561 describes an arrangement for installing the chest or the body of a rotary steam joint to a machine frame by using a cantilever support in the form of a bracket.
  • This construction comprises a tang extending from the body 50 and provided with a hole.
  • the bracket is fixed to the machine frame by bolts.
  • the desired positioning of the steam joint is achieved by a threaded rod mounted on the bracket and nuts threaded upon the rod on opposite sides of the tang, with the rod extending through the hole of the tang. After positioning, the body of the steam joint is fastened to the bracket with additional bolts.
  • the construction according to the present invention utilizes existing fixing points for the support of the old steam chest, such that the steam chest 12 is supported by the support plate 11 against the machine frame, the plate being a full ring or a partial ring.
  • Figures 5a and 5b show the construction according to the invention.
  • the fastening ring 10 of the steam chest 12 frame is fixed with a bolted joint to the support plate 11 fastened to the machine frame.
  • the points 13 of the old steam chest rod supports are utilized such that the support plate 11 is fastened to the machine frame through these points.
  • the support plate 11 is adjusted to a correct position with adjusting screws 14 in order to firmly keep the support plate in the correct position. With different solutions for the adjusting screws it is possible to install the support plate 11 on frame structures of greatly varying form.
  • the fixing arrangement shown in figures 5a and 5b allows the center and the center axis of the steam chest to coincide exactly with the cylinder axis.

Landscapes

  • Drying Of Solid Materials (AREA)
  • Air Humidification (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Clamps And Clips (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Devices For Medical Bathing And Washing (AREA)
  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Abstract

Support structure for the steam chest of a steam cylinder where the fixing points for the rod supports (1) of the old steam chest (2) are utilized when the support plate (11) of the fastening ring (10) of the new steam chest (12) is mounted.

Description

  • The construction according to the invention enables an improved support for the steam chest of a drying cylinder against the machine frame, and thus it is possible to install the steam chest with substantially greater care and accuracy in comparison to what is possible with a conventional rod support or cantilever support.
  • Figs. 1 to 3, 4a and 4b are prior art constructions. Figs. 5a and 5b show the construction according to the invention.
  • The constructions in use presently include supplying steam to the drying cylinder through a steam chest fastened to the end of the cylinder shaft (figure 1). The steam chest 2 is supported through support bars 1 against the machine frame. Steam is conducted to the cylinder through the steam cylinder shaft 3. Condensate and discharge steam is conducted in the horizontal condensate discharge pipe 4 to the condensate section of the steam chest. There are also constructions with a connection structure for the condensate only, so called condensate chests. It is however common to have the steam and condensate joints in a common steam chest. The most common construction of the steam chest is shown in figure 2. The steam chest 2 is supported against the machine frame with two rods 1. Figure 3 shows a cantilever support construction 5. The drawback of the constructions according to figures 2 and 3 is that the geometric center 6 and center axis of the rotating parts inside the steam chest do not coincide with the center axis 7 of the cylinder. Figures 4a and 4b. The differences of the center axes may be due to tolerances of the machining of the steam chest support deviating from the allowed ones. As a result the parts inside the steam chest will wear out or suffer damage in a too short time.
  • The U.S. Patent No. 4,606,561 describes an arrangement for installing the chest or the body of a rotary steam joint to a machine frame by using a cantilever support in the form of a bracket. This construction comprises a tang extending from the body 50 and provided with a hole. The bracket is fixed to the machine frame by bolts. The desired positioning of the steam joint is achieved by a threaded rod mounted on the bracket and nuts threaded upon the rod on opposite sides of the tang, with the rod extending through the hole of the tang. After positioning, the body of the steam joint is fastened to the bracket with additional bolts.
  • The construction according to the present invention utilizes existing fixing points for the support of the old steam chest, such that the steam chest 12 is supported by the support plate 11 against the machine frame, the plate being a full ring or a partial ring. Figures 5a and 5b show the construction according to the invention. The fastening ring 10 of the steam chest 12 frame is fixed with a bolted joint to the support plate 11 fastened to the machine frame.
  • The points 13 of the old steam chest rod supports are utilized such that the support plate 11 is fastened to the machine frame through these points. The support plate 11 is adjusted to a correct position with adjusting screws 14 in order to firmly keep the support plate in the correct position. With different solutions for the adjusting screws it is possible to install the support plate 11 on frame structures of greatly varying form.
  • The fixing arrangement shown in figures 5a and 5b allows the center and the center axis of the steam chest to coincide exactly with the cylinder axis.

Claims (1)

  1. Support structure for fastening a chest (12) of a rotary steam joint connected to the end of a steam shaft (3) of a drying cylinder to a machine frame,
    the chest (12) comprising a fastening ring (10) for connection to the machine frame,
    characterized in that
    an annular support plate (11) is fastened to the machine frame utilizing two fixing holes of a former chest. (13) provided in the machine frame diametrically on opposite sides of the center axis of the drying cylinder,
    the support plate (11) forming a mounting seat for the fastening ring (10) and being provided with screws (14) for adjusting the center axis of the chest (12) to coincide with the center axis of the drying cylinder.
EP90911992A 1989-09-20 1990-08-03 Support structure for the fastening of a steam chest Expired - Lifetime EP0491715B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI894440 1989-09-20
FI894440A FI82099C (en) 1989-09-20 1989-09-20 STOED CONSTRUCTION FOR FAESTURE AV EN AONGBOX.
PCT/FI1990/000189 WO1991004373A1 (en) 1989-09-20 1990-08-03 Support structure for the fastening of a steam chest

Publications (2)

Publication Number Publication Date
EP0491715A1 EP0491715A1 (en) 1992-07-01
EP0491715B1 true EP0491715B1 (en) 1995-11-08

Family

ID=8529024

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90911992A Expired - Lifetime EP0491715B1 (en) 1989-09-20 1990-08-03 Support structure for the fastening of a steam chest

Country Status (9)

Country Link
EP (1) EP0491715B1 (en)
JP (1) JPH05503324A (en)
AT (1) ATE130061T1 (en)
CA (1) CA2065369C (en)
DE (1) DE69023506T2 (en)
DK (1) DK0491715T3 (en)
ES (1) ES2082000T3 (en)
FI (1) FI82099C (en)
WO (1) WO1991004373A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4606561A (en) * 1985-05-31 1986-08-19 The Johnson Corporation Journal mounted rotary joint
US4889369A (en) * 1985-09-16 1989-12-26 Albrecht David E Adapter fitting

Also Published As

Publication number Publication date
FI894440A (en) 1989-10-30
DE69023506T2 (en) 1996-04-04
FI82099B (en) 1990-09-28
ES2082000T3 (en) 1996-03-16
JPH05503324A (en) 1993-06-03
WO1991004373A1 (en) 1991-04-04
EP0491715A1 (en) 1992-07-01
DK0491715T3 (en) 1995-12-11
CA2065369C (en) 1999-10-19
FI82099C (en) 1991-01-10
ATE130061T1 (en) 1995-11-15
DE69023506D1 (en) 1995-12-14
CA2065369A1 (en) 1991-03-21
FI894440A0 (en) 1989-09-20

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