GB1247891A - Dryer performance indicator - Google Patents

Dryer performance indicator

Info

Publication number
GB1247891A
GB1247891A GB45186/68A GB4518668A GB1247891A GB 1247891 A GB1247891 A GB 1247891A GB 45186/68 A GB45186/68 A GB 45186/68A GB 4518668 A GB4518668 A GB 4518668A GB 1247891 A GB1247891 A GB 1247891A
Authority
GB
United Kingdom
Prior art keywords
dryer
signals
moisture
content
target value
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
Application number
GB45186/68A
Inventor
Richard Wright Hickman
Antoni Armand Rocheleau
David Allan Spitz
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.)
Industrial Nucleonics Corp
Original Assignee
Industrial Nucleonics Corp
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 Industrial Nucleonics Corp filed Critical Industrial Nucleonics Corp
Publication of GB1247891A publication Critical patent/GB1247891A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • D21G9/0036—Paper-making control systems controlling the press or drying section
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Textile Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

1,247,891. Evaluating dryer performance. INDUSTRIAL NUCLEONICS CORP. 23 Sept., 1968 [5 Oct., 1967], No. 45186/68. Heading F4G. [Also in Division G1] The moisture contents of a moving paper sheet 12 at points A and B before and after the dryer 10 are compared with target values to give first and second difference signals of appropriate sense, and the series of the difference signals are compared to give an indication of dryer performance (so that the heat supply to the dryer 10 may be adjusted). Dryer performance is acceptable if the pre-dryer moisture content is greater than its target value and the post-dryer content less than its target value; unacceptable if the pre-dryer content is less than its target value and the post-dryer content is greater than its target value; and indeterminate for other moisture contents. Pre-dryer (S A ) and post-dryer (S B ) moisture content signals are derived by a computer 16 from direct moisture measurement (M B ) at 22 (e.g. by a capacitance or neutron reflection gauge) and from weight measurements (W A and W B ) at 18 and 20 (e.g. by radiation gauges) of the sheet. In Fig. 1, target values fed in at 26 and 28 from a manually set potentiometer (not shown) are subtracted in a processor 24 from the moisture signals S A and S B , and the relative sense of the difference signals is measured by a phase sensitive circuit and indicated at 30a, e.g. by a lamp display or typewritten record. The gauges 18, 20, 22 are traversed across the zones 1-8 of the sheet (or a number of gauges is provided) and the signal from gauge 18 is delayed so that the computer 16 receives signals from the same area of the sheet. In Fig. 4, average target values (continuously determined by devices 52 and 54) are subtracted in units 56 and 58 from the moisture signals S A and S B to give signals W and D which are fed to the processor 24. The processor 24 comprises diodes 63-66 feeding multipliers 60 and 62 connected to a summing amplifier 68 coupled to a qualitative indicator 72 and a quantitative indicator 73 for each zone. In other embodiments, the signals W and D are coupled by diodes to AND gates connected to red and green lamps and to a NOR gate connected to a yellow (indeterminate) lamp, for each zone; a chart recorder using coloured inks, or rotation through a small angle, is used in place of the lamps.
GB45186/68A 1967-10-05 1968-09-23 Dryer performance indicator Expired GB1247891A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67312967A 1967-10-05 1967-10-05

Publications (1)

Publication Number Publication Date
GB1247891A true GB1247891A (en) 1971-09-29

Family

ID=24701427

Family Applications (1)

Application Number Title Priority Date Filing Date
GB45186/68A Expired GB1247891A (en) 1967-10-05 1968-09-23 Dryer performance indicator

Country Status (3)

Country Link
US (1) US3731520A (en)
CA (1) CA932173A (en)
GB (1) GB1247891A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0489720A2 (en) * 1982-12-10 1992-06-10 Krieger Corporation Method and apparatus for uniformly drying moving webs
WO1997003331A1 (en) * 1995-07-13 1997-01-30 Babcock Textilmaschinen Gmbh Continuous textile web drier
WO2000055421A1 (en) * 1999-03-15 2000-09-21 Voith Paper Patent Gmbh Method for operating a machine for producing and/or improving material webs
US6773551B1 (en) 1999-03-15 2004-08-10 Voith Paper Patent Gmbh Device for determining the characteristics of a running material web

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4029044A (en) * 1975-09-17 1977-06-14 The Goodyear Tire & Rubber Company Device for sensing undried tire cord fabric treated with a bonding agent
DE2655972C3 (en) * 1976-12-10 1980-03-06 Hoechst Ag, 6000 Frankfurt Process for uniform pre-drying of textile webs
DE3521061A1 (en) * 1985-06-12 1986-12-18 Dokoupil, Jiří, Dipl-Ing., 6251 Gückingen METHOD AND DEVICE FOR CONDITIONING LEATHER, FURS, FURS AND THE LIKE.
US4709579A (en) * 1985-08-16 1987-12-01 Westinghouse Electric Corp. Measurement of moisture content
US4944385A (en) * 1988-09-14 1990-07-31 Shelby Barry G Endless belt moisture control apparatus
US5471911A (en) * 1992-03-09 1995-12-05 Hoshizaki Denki Kabushiki Kaisha Cooking apparatus such as fryer or the like for frying food
US5303579A (en) * 1993-02-03 1994-04-19 Mefcor, Inc. Conveyor-belt moisture control sensor apparatus
JPH07159028A (en) * 1993-12-08 1995-06-20 Yamamoto Tekkosho:Kk Heating plate drying method for platelike material
DE4442240A1 (en) * 1994-11-28 1996-05-30 Fogra Forschungsgesellschaft D Fast determn. of residual solvent in gravure print
US5911785A (en) * 1997-12-17 1999-06-15 Sony Corporation Test fixture and method of testing a spin rinse dryer and components thereof
DE19855940A1 (en) * 1998-12-04 2000-06-08 Voith Sulzer Papiertech Patent Fibrous web drying
US8082826B2 (en) * 2008-03-25 2011-12-27 Power Tool Institute Saw accessories and clamp for use therewith
US8091456B2 (en) 2008-03-25 2012-01-10 Power Tool Institute Safety devices for saws
DE102008040014B4 (en) * 2008-06-30 2012-06-06 Koenig & Bauer Aktiengesellschaft Method for monitoring the solvent input in at least one dryer and a printing machine for printing one or more webs with at least one dryer
US20130077998A1 (en) * 2011-09-27 2013-03-28 Thomas Nathaniel Tombs Electrographic printing using fluidic charge dissipation
US8780147B2 (en) * 2011-09-27 2014-07-15 Eastman Kodak Company Large-particle semiporous-paper inkjet printer
US20130077999A1 (en) * 2011-09-27 2013-03-28 Thomas Nathaniel Tombs Electrographic printer using fluidic charge dissipation
US9481777B2 (en) 2012-03-30 2016-11-01 The Procter & Gamble Company Method of dewatering in a continuous high internal phase emulsion foam forming process
CN103808394B (en) * 2014-02-17 2016-01-20 长春吉大科学仪器设备有限公司 A kind of check weighing structure and the crop dryer comprising this structure of crop dryer
EP3378989B1 (en) * 2017-03-20 2019-10-09 Valmet Technologies Oy Arrangement and method for monitoring a yankee cylinder

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922475A (en) * 1958-04-09 1960-01-26 Industrial Nucleonics Corp Measuring and controlling system
US3040807A (en) * 1959-11-04 1962-06-26 Industrial Nucleonics Corp Moisture balance correction system
US3073153A (en) * 1960-01-19 1963-01-15 Alger L Petitjean Moisture measuring system
US3260642A (en) * 1962-12-12 1966-07-12 Industrial Nucleonics Corp Moisture computer and control system for processing materials having high, indeterminate moisture contents
US3244206A (en) * 1963-03-08 1966-04-05 Industrial Nucleonics Corp Control apparatus for a veneer lathe
US3413192A (en) * 1965-06-14 1968-11-26 St Regis Paper Co Automatic measuring and control apparatus for forming sheet material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0489720A2 (en) * 1982-12-10 1992-06-10 Krieger Corporation Method and apparatus for uniformly drying moving webs
EP0489720B1 (en) * 1982-12-10 1997-07-02 Krieger Corporation Method and apparatus for uniformly drying moving webs
WO1997003331A1 (en) * 1995-07-13 1997-01-30 Babcock Textilmaschinen Gmbh Continuous textile web drier
WO2000055421A1 (en) * 1999-03-15 2000-09-21 Voith Paper Patent Gmbh Method for operating a machine for producing and/or improving material webs
US6712937B1 (en) 1999-03-15 2004-03-30 Voith Paper Patent Gmbh Method of operating a machine for the manufacture and/or refinement of material webs
US6773551B1 (en) 1999-03-15 2004-08-10 Voith Paper Patent Gmbh Device for determining the characteristics of a running material web

Also Published As

Publication number Publication date
CA932173A (en) 1973-08-21
US3731520A (en) 1973-05-08

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