GB2015197A - Liquid flow control - Google Patents

Liquid flow control

Info

Publication number
GB2015197A
GB2015197A GB7901017A GB7901017A GB2015197A GB 2015197 A GB2015197 A GB 2015197A GB 7901017 A GB7901017 A GB 7901017A GB 7901017 A GB7901017 A GB 7901017A GB 2015197 A GB2015197 A GB 2015197A
Authority
GB
United Kingdom
Prior art keywords
liquid
flow
liquid flow
flow control
column
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.)
Granted
Application number
GB7901017A
Other versions
GB2015197B (en
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB7901017A priority Critical patent/GB2015197B/en
Publication of GB2015197A publication Critical patent/GB2015197A/en
Application granted granted Critical
Publication of GB2015197B publication Critical patent/GB2015197B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
    • G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
    • G05D7/0635—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Flow Control (AREA)

Abstract

In an apparatus for controlling the flow of liquid, especially at rates down to 0.5 ml/hr, through a valve (2), the level of liquid in a column (1) is detected by a (photoelectric) sensor (11b, 11b') which is moved along the column at a predetermined rate corresponding to the flow rate desired. A signal, produced whenever the liquid level departs from a position central to the sensor, is used to control the opening and closing of valve (2) to maintain the liquid flow at the desired value. Additional sensors (11a, 11a') and (11c, 11c') cause alarms to be sounded if the liquid level is detected at these extreme positions. <IMAGE>
GB7901017A 1978-02-08 1979-01-11 Liquid flow control Expired GB2015197B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7901017A GB2015197B (en) 1978-02-08 1979-01-11 Liquid flow control

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB504478 1978-02-08
GB7901017A GB2015197B (en) 1978-02-08 1979-01-11 Liquid flow control

Publications (2)

Publication Number Publication Date
GB2015197A true GB2015197A (en) 1979-09-05
GB2015197B GB2015197B (en) 1982-07-21

Family

ID=26239574

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7901017A Expired GB2015197B (en) 1978-02-08 1979-01-11 Liquid flow control

Country Status (1)

Country Link
GB (1) GB2015197B (en)

Also Published As

Publication number Publication date
GB2015197B (en) 1982-07-21

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee