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WO1998039630A1 - Appareil de transfert de fluide - Google Patents

Appareil de transfert de fluide Download PDF

Info

Publication number
WO1998039630A1
WO1998039630A1 PCT/GB1998/000408 GB9800408W WO9839630A1 WO 1998039630 A1 WO1998039630 A1 WO 1998039630A1 GB 9800408 W GB9800408 W GB 9800408W WO 9839630 A1 WO9839630 A1 WO 9839630A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
chamber
sample
piston
conduit
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.)
Ceased
Application number
PCT/GB1998/000408
Other languages
English (en)
Inventor
Bruce Donaldson Grieve
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.)
Avecia Ltd
Syngenta Ltd
Original Assignee
Zeneca Ltd
Avecia 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 Zeneca Ltd, Avecia Ltd filed Critical Zeneca Ltd
Priority to AU59999/98A priority Critical patent/AU5999998A/en
Publication of WO1998039630A1 publication Critical patent/WO1998039630A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
    • G01N1/2035—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials by deviating part of a fluid stream, e.g. by drawing-off or tapping

Definitions

  • THIS INVENTION relates to fluid transfer apparatus.
  • Swiss Patent 652,504 discloses a chamber of fixed dimensions which is introduced into a fluid to be sampled, the chamber then being isolated therefrom and the sample held in it expelled by a scavenger medium to a receptacle.
  • composition of the sample may alter before it is analysed.
  • This invention comprises fluid transfer apparatus which comprises a sample chamber, means for introducing a fluid to be sampled into the chamber from a body of fluid into which the chamber is inserted, means for isolating the chamber from the body of fluid and means to mix a reaction inhibiting fluid with the fluid so isolated in the chamber sufficiently thoroughly and rapidly after isolation to enable data indicative of the progress of a reaction at the time of isolation to be obtained by analysis of the mixed sample and means to discharge the mixed sample from the chamber.
  • the fluids are suitably liquids.
  • the reaction inhibiting fluid may function for example by cooling the sample, inactivating a catalyst, eliminating a reactant, altering the pH or by simple dilution. Preferably it reduces the viscosity if the sample is viscous and dissolves solids if solids are present.
  • the apparatus be in the form of a probe, i.e. that it should be capable of taking samples from a vessel at a position remote from its wall.
  • a probe i.e. that it should be capable of taking samples from a vessel at a position remote from its wall.
  • it may be elongated, the chamber being near to or at one end and the sample withdrawal point being near to or at the other end.
  • the chamber may be opened and isolated by motion between different stations such that it is closed by a surrounding sleeve in the isolation station.
  • a pumping action may be provided by reciprocating a member which comprises the chamber between a position in which it contacts a piston which is urged against the member a second chamber (pump chamber) which is formed or enlarged by motion of the piston in the direction of the member a conduit through which sample fluid can enter the pump chamber such that on withdrawing the member the piston follows, drawing fluid into the pump chamber means to close the conduit through which the sample fluid enters the pump chamber and means communicating between the pump chamber and the sample chamber such that contents of the pump chamber are forced into the sample chamber with the said conduit closed on reversing the direction of the stroke, the sample chamber being vented at a point or points remote from the point or points of ingress of fluid from the pump chamber during this action.
  • the piston is provided with a conduit leading to the pump chamber and in fluid tight communication, when the piston is in contact with the member, with a conduit in the member leading to the sample chamber but which is opened to communication with the body of fluid when the piston and member are separated.
  • a gap opens into which fluid enters and as the piston is urged towards the member fluid is drawn through the conduit to the pump chamber.
  • On reversing the stroke contents of the pump chamber are forced into the sample chamber.
  • Figures 1.1 and 1.2 show the probe during sample removal step.
  • Figures 2.1 and 2.2 show the probe in its "rest" state in which its sample chamber communicates with its surroundings.
  • Figures 3.1 and 3.2 show the probe during an intermediate state during sample taking and
  • Figures 4.1 and 4.2 show the probe on its sample pumping state.
  • Figure 5.1 is equivalent to Figure 1.1 and Figure 5.2 shows cross sections through the probe in its sample removal state indicating the arrangements for fluid flow.
  • the probe comprises a tubular outer casing (9) closed by an end plate formed with a cylindrical projection locating a spring (26) and defining a gap between a liner (8) of casing (9) which gap accommodates a skirt of a piston (3).
  • Piston (3) comprises a channel (27) opening against liner (8) and any ducts contained therein in the course of its travel and leading to the underside of piston (3).
  • a shuttle (2) is reciprocal within liner (8) and comprises a sample chamber (1) which communicates when in its rest position through ports in the outer casing with a body of fluid to be sampled or with ducts cut in liner (8) at other positions in its travel and has orthogonal ducts connecting the sample chamber with ducts cut in the liner (8).
  • Shuttle (2) is driven by an axial tube (6) which leads to a duct (20) communicating through the shuttle with side ducts cut in liner (8) and at its far end communicates with a fluid injection assembly (7).
  • An annular space (25) surrounding tube (6) communicates with an outlet port (11).
  • Means (4) are provided for reciprocating the shuttle.
  • Figures 1.1 and 1.2 show the probe during the step of mixing a reaction inhibiting liquid with the liquid which has been sampled and discharging the mixed sample from the chamber. By this means it is prepared for the recovery of a second sample which is uncontaminated by the first sample by the procedure described later.
  • the probe comprises a sample chamber/mixing chamber (1) defined by a member (2) which acts as a shuttle.
  • the shuttle is connected by a tube (6) which is itself connected to a driving piston and inlet assembly (7).
  • the tube (6) communicates via channel (20) to channel (22) which is defined by a sleeve (8) between external casing (23) and the shuttle and passes incoming mixing fluid through sample chamber (1) from which it is expelled via channel (24) (which does not communicate with channel (22)) also defined by the liner and the external casing thereby discharging the sample and mixing fluid into the annular chamber (25) from which it passes to sample vent (11).
  • the shuttle (2) is then pressed downwards as shown in Figure 4 against piston (3) forcing fluid contained in the space behind the piston (29) to pass via channel (30) through a channel (31) which is not in communication with the body of fluid from which the sample is taken and which is defined by the outer casing and the sleeve (8) into chamber (1) and removed from chamber (1) via a second channel (32) formed between the sleeve (8) and the outer casing which communicates with the surrounding body of fluid.
  • chamber (29) On depressing the shuttle to its full extent, chamber (29) is emptied through chamber (1) and the process may be repeated any number of times to secure representative sampling.
  • the shuttle may be withdrawn to the position shown in Figure 1 and the sample removed as previously described by admixture in the mixing fluid.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

Appareil de transfert de fluide comprenant une chambre à échantillonner de volume fixe, un moyen pour remplir la chambre de fluide à échantillonner à partir d'un corps de fluide, dans lequel la chambre est insérée, un moyen pour isoler la chambre du corps de fluide et un moyen pour mélanger un fluide inhibiteur de réaction au fluide ainsi isolé dans la chambre d'une manière suffisamment complète et rapide après isolement, de façon à obtenir des données indicatives sur la composition du fluide au moment de l'isolement, par analyse de l'échantillon mélangé, et un moyen pour expulser de la chambre l'échantillon mélangé. L'appareil permet de réguler la progression des réactions se produisant dans la phase fluide.
PCT/GB1998/000408 1997-03-04 1998-02-10 Appareil de transfert de fluide Ceased WO1998039630A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU59999/98A AU5999998A (en) 1997-03-04 1998-02-10 Fluid transfer apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9704484.6A GB9704484D0 (en) 1997-03-04 1997-03-04 Fluid transfer apparatus
GB9704484.6 1997-03-04

Publications (1)

Publication Number Publication Date
WO1998039630A1 true WO1998039630A1 (fr) 1998-09-11

Family

ID=10808685

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/000408 Ceased WO1998039630A1 (fr) 1997-03-04 1998-02-10 Appareil de transfert de fluide

Country Status (3)

Country Link
AU (1) AU5999998A (fr)
GB (1) GB9704484D0 (fr)
WO (1) WO1998039630A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8312780B2 (en) 2010-06-25 2012-11-20 Mettler-Toledo Ag Sampling device and method
US8365617B2 (en) 2010-06-25 2013-02-05 Mettler-Toledo Ag Sampling device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4262533A (en) * 1979-05-03 1981-04-21 Jaeger Ben E Heated liquid sampler
US4475410A (en) * 1982-11-26 1984-10-09 Jaeger Ben E Sampler for viscous materials
EP0181299A2 (fr) * 1984-11-06 1986-05-14 Lars Ljungberg, Lab Trade Ab Vanne doseuse
US4702114A (en) * 1984-05-07 1987-10-27 Omya S.A. Device for withdrawing and conditioning samples of materials in solid, liquid or gaseous form, for the purpose of analysis thereof
US4744255A (en) * 1987-03-23 1988-05-17 Jaeger Ben E Sampler and metering pump
GB2205551A (en) * 1987-06-10 1988-12-14 Roy Jenkins An automatic sampler for flowing liquid
US4905510A (en) * 1988-12-21 1990-03-06 Texaco Inc. Method of isolating an oilfield flowline sample for analysis without shearing the sample

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4262533A (en) * 1979-05-03 1981-04-21 Jaeger Ben E Heated liquid sampler
US4475410A (en) * 1982-11-26 1984-10-09 Jaeger Ben E Sampler for viscous materials
US4702114A (en) * 1984-05-07 1987-10-27 Omya S.A. Device for withdrawing and conditioning samples of materials in solid, liquid or gaseous form, for the purpose of analysis thereof
EP0181299A2 (fr) * 1984-11-06 1986-05-14 Lars Ljungberg, Lab Trade Ab Vanne doseuse
US4744255A (en) * 1987-03-23 1988-05-17 Jaeger Ben E Sampler and metering pump
GB2205551A (en) * 1987-06-10 1988-12-14 Roy Jenkins An automatic sampler for flowing liquid
US4905510A (en) * 1988-12-21 1990-03-06 Texaco Inc. Method of isolating an oilfield flowline sample for analysis without shearing the sample

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8312780B2 (en) 2010-06-25 2012-11-20 Mettler-Toledo Ag Sampling device and method
US8365617B2 (en) 2010-06-25 2013-02-05 Mettler-Toledo Ag Sampling device
US8789431B2 (en) 2010-06-25 2014-07-29 Mettler-Toledo Ag Sampling device and method of use thereof

Also Published As

Publication number Publication date
GB9704484D0 (en) 1997-04-23
AU5999998A (en) 1998-09-22

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