NO20016032L - Gamma ray density profile sensors with passive chilled PIN photo diodes - Google Patents

Gamma ray density profile sensors with passive chilled PIN photo diodes

Info

Publication number
NO20016032L
NO20016032L NO20016032A NO20016032A NO20016032L NO 20016032 L NO20016032 L NO 20016032L NO 20016032 A NO20016032 A NO 20016032A NO 20016032 A NO20016032 A NO 20016032A NO 20016032 L NO20016032 L NO 20016032L
Authority
NO
Norway
Prior art keywords
sensor
gamma ray
photodiodes
density profile
density
Prior art date
Application number
NO20016032A
Other languages
Norwegian (no)
Other versions
NO20016032D0 (en
Inventor
Anthony Byatt
Daniel Matter
Thomas Kleiner
Philippe Pretre
Walter Rueegg
Original Assignee
Abb Research 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 Abb Research Ltd filed Critical Abb Research Ltd
Publication of NO20016032D0 publication Critical patent/NO20016032D0/en
Publication of NO20016032L publication Critical patent/NO20016032L/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/288—X-rays; Gamma rays or other forms of ionising radiation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/24—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing the transmission of wave or particle radiation through the material
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/34—Arrangements for separating materials produced by the well

Abstract

Foreliggende oppfinnelse vedrører en føler (1) for tetthetsprofilmålinger av gammaståler (5) som er spesielt egnet for nivåmåling i oljeseparatortanker. Det kjente målings- prinsippet er basert på det faktum at en tetthetsavhengig gammastråleoverføring i et medium (6a, 6b, 6c) kan måles på en posisjonsmessig oppløst måte ved hjelp av en vertikal rekkeanordning (13) av fotomultiplikatorer (7) og kan bru- kes for å bestemme nivået av et olje/vanngrenselag (6c). Ifølge oppfinnelsen er gammastråletetthetsføler (1) utstyrt med pinfotodioder (10) i stedet for fotomultiplikatorer (7) samt organer for passiv kjøling (12, 14) av fotodiodene (10). Som et resultat av dette forenkles konstruksjonen, operasjonen og vedlikeholdet av føleren (l), idet posi- sjonsoppløsningen og levetiden til føleren (1) forbedres. Passiv kjøling kan implementeres på en enkel måte ved hjelp av en termisk bro (12) som dannes mellom de varme fotodio- dene (10) og det kjølige, omsluttende mediet eller den kal- de veggen (14) av separatortanken. Totalt sett er følerens (1) evne til å bli brukt under vanskelige operasjonsforhold og på vanskelig tilgjengelige steder betydelig forbedret.The present invention relates to a sensor (1) for density profile measurements of gamma rays (5) which are particularly suitable for level measurement in oil separator tanks. The known measurement principle is based on the fact that a density-dependent gamma ray transmission in a medium (6a, 6b, 6c) can be measured in a position-resolved manner by means of a vertical row arrangement (13) by photomultipliers (7) and can be used to determine the level of an oil / water boundary layer (6c). According to the invention, gamma ray density sensors (1) are provided with pin photodiodes (10) instead of photomultipliers (7) as well as means for passive cooling (12, 14) of the photodiodes (10). As a result, the design, operation and maintenance of the sensor (1) is simplified, improving the position resolution and life of the sensor (1). Passive cooling can be implemented simply by means of a thermal bridge (12) formed between the hot photodiodes (10) and the cool, enclosing medium or cold wall (14) of the separator tank. Overall, the ability of the sensor (1) to be used in difficult operating conditions and in difficult-to-reach locations is greatly enhanced.

NO20016032A 1999-06-10 2001-12-10 Gamma ray density profile sensors with passive chilled PIN photo diodes NO20016032L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19926388A DE19926388A1 (en) 1999-06-10 1999-06-10 Gamma ray density profile sensor with passively cooled PIN photodiodes
PCT/CH2000/000293 WO2000077502A2 (en) 1999-06-10 2000-05-25 Gamma ray density profile sensor with passively cooled pin photodiodes

Publications (2)

Publication Number Publication Date
NO20016032D0 NO20016032D0 (en) 2001-12-10
NO20016032L true NO20016032L (en) 2002-02-11

Family

ID=7910739

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20016032A NO20016032L (en) 1999-06-10 2001-12-10 Gamma ray density profile sensors with passive chilled PIN photo diodes

Country Status (5)

Country Link
EP (1) EP1185856A2 (en)
AU (1) AU4389900A (en)
DE (1) DE19926388A1 (en)
NO (1) NO20016032L (en)
WO (1) WO2000077502A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10043629A1 (en) * 2000-09-01 2002-03-14 Endress Hauser Gmbh Co Device for determining and / or monitoring the density and / or the filling level of a filling material in a container
DE60333599D1 (en) 2003-05-16 2010-09-09 Haimo Technologies Inc ADJUSTABLE GAS LIQUID CENTRIFUGAL SEPARATOR AND SEPARATION METHOD
US8087293B2 (en) 2003-05-16 2012-01-03 Haimo Technologies, Inc. Oil-gas-water multi-phase flow adjusting apparatus and oil-gas-water multi-phase flow rate measuring apparatus and measuring method
GB0817107D0 (en) 2008-09-18 2008-10-29 Johnson Matthey Plc Level measurement system
ITTO20110473A1 (en) * 2011-05-30 2012-12-01 Torino Politecnico METHOD AND DEVICE TO MEASURE THE CHARACTERISTICS OF THE SNOW, IN PARTICULAR THE DENSITY?
GB201215920D0 (en) * 2012-09-06 2012-10-24 Johnson Matthey Plc Radiation detector
GB201215919D0 (en) * 2012-09-06 2012-10-24 Johnson Matthey Plc Radiation detector

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2464462B1 (en) * 1979-09-05 1986-03-07 Commissariat Energie Atomique METHOD AND DEVICE FOR MEASURING THE LEVEL OF A LIQUID IN A SPEAKER
DE3278887D1 (en) * 1981-03-12 1988-09-15 Ici Plc Level and interface detection
AT391763B (en) * 1988-09-13 1990-11-26 Bender & Co Gmbh DEVICE FOR MEASURING THE ACTIVITY AND VOLUME OF RADIOACTIVE LIQUIDS
DE19722837A1 (en) * 1997-05-30 1998-12-03 Abb Research Ltd Method and device for level measurement with gamma emitters and a virtual linear detector arrangement
DE19741324A1 (en) * 1997-09-19 1999-03-25 Inst Prozestechnik Prozesautom Boiling water reactor filling level measurement

Also Published As

Publication number Publication date
EP1185856A2 (en) 2002-03-13
DE19926388A1 (en) 2000-12-14
NO20016032D0 (en) 2001-12-10
AU4389900A (en) 2001-01-02
WO2000077502A3 (en) 2001-03-29
WO2000077502A2 (en) 2000-12-21

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