GB1446390A - Automatic dry weight control system - Google Patents

Automatic dry weight control system

Info

Publication number
GB1446390A
GB1446390A GB2441574A GB2441574A GB1446390A GB 1446390 A GB1446390 A GB 1446390A GB 2441574 A GB2441574 A GB 2441574A GB 2441574 A GB2441574 A GB 2441574A GB 1446390 A GB1446390 A GB 1446390A
Authority
GB
United Kingdom
Prior art keywords
weight
moisture
instant
dry
coke
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
GB2441574A
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.)
Bethlehem Steel Corp
Original Assignee
Bethlehem Steel 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 Bethlehem Steel Corp filed Critical Bethlehem Steel Corp
Publication of GB1446390A publication Critical patent/GB1446390A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/48—Analogue computers for specific processes, systems or devices, e.g. simulators
    • G06G7/58—Analogue computers for specific processes, systems or devices, e.g. simulators for chemical processes ; for physico-chemical processes; for metallurgical processes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
    • G01G13/02—Means for automatically loading weigh pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
    • G01G13/24—Weighing mechanism control arrangements for automatic feed or discharge
    • G01G13/28—Weighing mechanism control arrangements for automatic feed or discharge involving variation of an electrical variable which is used to control loading or discharge of the receptacle
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G23/00—Auxiliary devices for weighing apparatus

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Manufacture Of Iron (AREA)
  • Coke Industry (AREA)

Abstract

1446390 Automatic control BETHLEHEM STEEL CORP 3 June 1974 [5 June 1973] 24415/74 Heading G3N An apparatus for automatically measuring and controlling the net-dry-weight of discrete quantities of moisture-containing materials computes an actual desired weight in dependence on moisture-content, target-dry-weight and dryweight error ensuing from all previous weighings. As shown, an instant measure of coke to a hopper is obtained from a voltage follower 10 and modified by an instant moisture-content measure, from a nuclear device 18, in a multiplier 20 to produce an instant dry-weight. A device 24 subtracts the dry-weight from a reference value for a weighing from a module 26 an adds it to a reference value plus preceding error value held in a sample-and-hold module 30. The resultant is held in a sample-and-hold module 28 and applied to a divider device 34, together with the moisture-content measure, and the resultant desired actual value for the next weighing, which is held in a sample-and-hold module 36, and compared in a comparator 14 with the instant coke weight from follower 10 to develop on error signal which energizes a relay 16 controlling a conveyer belt, not shown, supplying the coke to a hopper. The calculating sequence is determined by a camtimer which is automatically started when the hopper begins to fill.
GB2441574A 1973-06-05 1974-06-03 Automatic dry weight control system Expired GB1446390A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00367264A US3814914A (en) 1973-06-05 1973-06-05 Automatic dry coke weight system

Publications (1)

Publication Number Publication Date
GB1446390A true GB1446390A (en) 1976-08-18

Family

ID=23446505

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2441574A Expired GB1446390A (en) 1973-06-05 1974-06-03 Automatic dry weight control system

Country Status (6)

Country Link
US (1) US3814914A (en)
JP (1) JPS5050092A (en)
BR (1) BR7404633D0 (en)
CA (1) CA1017062A (en)
DE (1) DE2427037A1 (en)
GB (1) GB1446390A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4017722A (en) * 1975-04-11 1977-04-12 Measurex Corporation Control system for textile tenter frame
US4137976A (en) * 1977-05-09 1979-02-06 Fiber Industries, Inc. Method and apparatus for bale weight control
US4316384A (en) * 1979-09-04 1982-02-23 General Mills, Inc. Digital moisture meter and method for determining percent weight loss
US4623030A (en) * 1985-10-21 1986-11-18 Alcor, Inc. Piezoelectric ratio weighing device
US4697657A (en) * 1985-10-21 1987-10-06 Alcor Inc Piezoelectric weighing device
DE3619416A1 (en) * 1986-06-10 1987-12-17 Mannesmann Ag METHOD AND DEVICE FOR EMPTYING A WATER PAN WITHOUT SLAG
US4819176A (en) * 1987-02-06 1989-04-04 Treasure Isle, Inc. Process control and data collection system
CN106544459B (en) * 2016-12-08 2018-04-13 王旭民 The middle bucket that gathers materials under a kind of blast furnace simulates the control method weighed

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU414492B1 (en) * 1966-07-06 1971-06-30 Australian Iron & Steel Pty. Limited Simplified automatic charging system for blast furnaces
US3502162A (en) * 1967-08-16 1970-03-24 Westinghouse Electric Corp Weight correcting material handling control for variable water content materials used in blast furnaces and other apparatus

Also Published As

Publication number Publication date
BR7404633D0 (en) 1975-01-07
DE2427037A1 (en) 1975-01-02
CA1017062A (en) 1977-09-06
JPS5050092A (en) 1975-05-06
US3814914A (en) 1974-06-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee