GB2263782A - Improvements in or relating to liquid flow systems - Google Patents

Improvements in or relating to liquid flow systems

Info

Publication number
GB2263782A
GB2263782A GB9305763A GB9305763A GB2263782A GB 2263782 A GB2263782 A GB 2263782A GB 9305763 A GB9305763 A GB 9305763A GB 9305763 A GB9305763 A GB 9305763A GB 2263782 A GB2263782 A GB 2263782A
Authority
GB
United Kingdom
Prior art keywords
liquid
flow
valve
relating
housing
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
GB9305763A
Other versions
GB2263782B (en
GB9305763D0 (en
Inventor
Roger Artindale Heron
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.)
BTG International Ltd
Original Assignee
British Technology Group 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
Priority claimed from GB909020811A external-priority patent/GB9020811D0/en
Application filed by British Technology Group Ltd filed Critical British Technology Group Ltd
Priority to GB9305763A priority Critical patent/GB2263782B/en
Publication of GB9305763D0 publication Critical patent/GB9305763D0/en
Publication of GB2263782A publication Critical patent/GB2263782A/en
Application granted granted Critical
Publication of GB2263782B publication Critical patent/GB2263782B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/06—Investigating concentration of particle suspensions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Lift Valve (AREA)

Abstract

A liquid flow system comprising conduit means through which liquid is pumped in normal use, and including means to determine the level of particulate contamination within that liquid, comprising: a valve in communication with the conduit means and comprising a valve member (1) moveable relatively to a valve housing (4), in which the member can be set relative to the housing to define a narrow clearance (20) through which flow takes place; means to interrupt the normal pumped flow of liquid through the system and, when it is so interrupted, to cause liquid to flow instead through the said valve clearance, and means to monitor the volume of liquid so passed, and thereby to derive a measure of the degree of contamination of the liquid in the system characterised in that the flow through the said narrow clearance is in a direction substantially at right angles to that of the said relative movement of the valve member and valve housing.
GB9305763A 1990-09-25 1993-03-19 Improvements in or relating to liquid flow systems Expired - Fee Related GB2263782B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9305763A GB2263782B (en) 1990-09-25 1993-03-19 Improvements in or relating to liquid flow systems

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB909020811A GB9020811D0 (en) 1990-09-25 1990-09-25 Improvements in or relating to liquid flow systems
PCT/GB1991/001640 WO1992005424A1 (en) 1990-09-25 1991-09-24 Improvements in or relating to liquid flow systems
GB9305763A GB2263782B (en) 1990-09-25 1993-03-19 Improvements in or relating to liquid flow systems

Publications (3)

Publication Number Publication Date
GB9305763D0 GB9305763D0 (en) 1993-06-02
GB2263782A true GB2263782A (en) 1993-08-04
GB2263782B GB2263782B (en) 1994-03-30

Family

ID=26297694

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9305763A Expired - Fee Related GB2263782B (en) 1990-09-25 1993-03-19 Improvements in or relating to liquid flow systems

Country Status (1)

Country Link
GB (1) GB2263782B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2361548A (en) * 2000-03-18 2001-10-24 John Barnes Determining the level of particulate contamination in a fluid power system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2043964A (en) * 1934-02-01 1936-06-09 Clardon Corp Dirt indicator for lubricating oil
EP0081340A1 (en) * 1981-12-04 1983-06-15 National Research Development Corporation Determining the level of contaminants in a hydraulic system
EP0101263A2 (en) * 1982-08-13 1984-02-22 Secretary of State for Trade and Industry in Her Britannic Majesty's Gov. of the U.K. of Great Britain and Northern Ireland Contamination level indicator
EP0123494A1 (en) * 1983-04-18 1984-10-31 National Research Development Corporation Determining the level of contaminants in a hydraulic system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2043964A (en) * 1934-02-01 1936-06-09 Clardon Corp Dirt indicator for lubricating oil
EP0081340A1 (en) * 1981-12-04 1983-06-15 National Research Development Corporation Determining the level of contaminants in a hydraulic system
EP0101263A2 (en) * 1982-08-13 1984-02-22 Secretary of State for Trade and Industry in Her Britannic Majesty's Gov. of the U.K. of Great Britain and Northern Ireland Contamination level indicator
EP0123494A1 (en) * 1983-04-18 1984-10-31 National Research Development Corporation Determining the level of contaminants in a hydraulic system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2361548A (en) * 2000-03-18 2001-10-24 John Barnes Determining the level of particulate contamination in a fluid power system
GB2361548B (en) * 2000-03-18 2002-04-10 John Barnes Contaminant communicator system

Also Published As

Publication number Publication date
GB2263782B (en) 1994-03-30
GB9305763D0 (en) 1993-06-02

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Legal Events

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

Effective date: 19970924