GB932593A - Fluid line transfer switch - Google Patents

Fluid line transfer switch

Info

Publication number
GB932593A
GB932593A GB20399/61A GB2039961A GB932593A GB 932593 A GB932593 A GB 932593A GB 20399/61 A GB20399/61 A GB 20399/61A GB 2039961 A GB2039961 A GB 2039961A GB 932593 A GB932593 A GB 932593A
Authority
GB
United Kingdom
Prior art keywords
passage
movable member
fluid line
line
slider
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
GB20399/61A
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.)
Schneider Electric Systems USA Inc
Original Assignee
Foxboro Co
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 Foxboro Co filed Critical Foxboro Co
Publication of GB932593A publication Critical patent/GB932593A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/0655—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with flat slides
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/04—Preparation or injection of sample to be analysed
    • G01N30/16—Injection
    • G01N30/20—Injection using a sampling valve
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/04—Preparation or injection of sample to be analysed
    • G01N30/16—Injection
    • G01N30/20—Injection using a sampling valve
    • G01N2030/204—Linearly moving valves, e.g. sliding valves

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

<PICT:0932593/III/1> <PICT:0932593/III/2> A sampling switch for use in gas chromatography comprises a first fluid line, a movable member containing a first passage which constitutes a portion of the first fluid line in the first position of the movable member, a second fluid line including a second passage in the movable member positioned to be substituted for the first passage in the first fluid line when the movable member is moved to the second position, and a chamber surrounding a portion of the first fluid line and defined by a movable member, and by an outer sealing member surrounding the inner sealing member and also in sealing engagement with the movable member, as well as by a flexible joining member connecting the two sealing members, and means for independently resiliently biasing the sealing members against the movable member, the movable member being arranged to move relatively to the chamber, and the chamber forming a portion of the second fluid line when the movable member is in the first position. As shown in Fig. 2 the transversely movable slider 27 of rectangular cross-section is resiliently mounted between the two open end opposed cups 23 and 24 by opposing spring assemblies 31 and 32 bearing upon annular members forming annular chambers 29 and 30, said annular members are preferably made of polytetrafluoroethylene and are in sealing engagement with slider 27. The carrier gas passes vertically downward through line 28 into a vertical passage 281 in the slider 27 when in the first position. Meanwhile the sample gas flows consecutively through chamber 29, passage 38, chamber 30 and passage 39 and when 27 is moved to its second position, passage 38 is aligned with line 28 and the fixed volume of gas in passage 38 is injected into the carrier stream. The sample gas flow continues as before except that it now travels between chambers 29 and 30 through the passage 281 in its new position. Thereafter the reverse movement of slider 27 uses passage 281 as a sample gas measurement volume and transfers this volume into the carrier gas flow line 28. The sample passages 281 and 38 may be made tortuous to increase the sample volume. Fig. V shows an embodiment suitable for use in frontal analysis or displacement chromatography. A first stream is established through line 55 and by moving slider 2711, an interface between the first stream and a sample stream in line 551 is established. All the passageways in the above apparatus may be made of polytetrafluoroethylene.
GB20399/61A 1960-06-09 1961-06-06 Fluid line transfer switch Expired GB932593A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US35082A US3022673A (en) 1960-06-09 1960-06-09 Fluid line transfer switch

Publications (1)

Publication Number Publication Date
GB932593A true GB932593A (en) 1963-07-31

Family

ID=21880522

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20399/61A Expired GB932593A (en) 1960-06-09 1961-06-06 Fluid line transfer switch

Country Status (2)

Country Link
US (1) US3022673A (en)
GB (1) GB932593A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4991457A (en) * 1990-05-14 1991-02-12 Chrysler Corporation Shift boot support and bezel arrangement
US5277073A (en) * 1992-01-27 1994-01-11 The Dow Chemical Company Constant pressure-loaded shaft seal
NO320755B1 (en) * 2004-07-15 2006-01-23 Fmc Kongsberg Subsea As valve assembly
DE102013104404A1 (en) * 2013-04-30 2014-10-30 Hamilton Bonaduz Ag Sampler for an analyzer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2757541A (en) * 1956-02-27 1956-08-07 Perkin Elmer Corp Sampling apparatus

Also Published As

Publication number Publication date
US3022673A (en) 1962-02-27

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