US3726143A - A device for withdrawing samples from a suspension flowing through a conduit - Google Patents

A device for withdrawing samples from a suspension flowing through a conduit Download PDF

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Publication number
US3726143A
US3726143A US00115559A US3726143DA US3726143A US 3726143 A US3726143 A US 3726143A US 00115559 A US00115559 A US 00115559A US 3726143D A US3726143D A US 3726143DA US 3726143 A US3726143 A US 3726143A
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US
United States
Prior art keywords
cylinder
conduit
piston
spindle
pistons
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 - Lifetime
Application number
US00115559A
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English (en)
Inventor
K Enarsson
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.)
KAELLE REGULATORER AB
KALLE REGULATORER SW AB
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KAELLE REGULATORER AB
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.)
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Publication date
Application filed by KAELLE REGULATORER AB filed Critical KAELLE REGULATORER AB
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Publication of US3726143A publication Critical patent/US3726143A/en
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    • 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
    • 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
    • G01N2001/205—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 using a valve
    • G01N2001/2057—Sample chamber in a valve/piston

Definitions

  • ABSTRACT Applicafion Priority Data A device for withdrawing samples of a suspension Mar. 4, 1970 Sweden ..2864/70 flowing t ugh a nduit com rises an open-ended cylinder adapted to be inserted through the wall of the [52] US. Cl. ..73/422 TC, 73/423 R conduit.
  • a spindle movable axially through the [51] Int. Cl. ..G01n 1/10 cylinder carries two spaced pistons as well as a cover [58] Field of Search ..73/422 R, 421 B, plate, the latter being adapted for sealing engagement 73/422 TC, 423 R with the inner end of the cylinder.
  • a movable spindle extending axially through the cylinder carries two spaced pistons which are slidable along the inner side of the cylinder wall, and the space between said pistons is then less than the length of the cylinder so that at least one piston will always be in sealing contact with the cylinder wall and thus a sampling sluice is formed.
  • the inner end of the spindle carries a cover plate adapted for sealing engagement with the inner end of the cylinder and spaced from the inner piston by a distance which is less than the length of the cylinder, while the distance between the cover plate and the outer piston is greater than the length of the cylinder.
  • the cover plate is normally in sealing contact with the inner end of the cylinder.
  • the outward movement is stopped in that the cover plate engages the inner end of the cylinder.
  • An effective seal of the cylinder is obtained by means of the overpressure prevailing in the conduit.
  • the overpressure in the space between the cover plate and the inside of the inner piston now ceases so that the risk of a leakage is eliminated, even if the inner piston should not seal completely.
  • the device is particularly useful for continuous checking operations when equally large samples are to be withdrawn at even intervals to be included in an average sample representative of a determined period of time, such as a work shift.
  • An open-ended cylinder 2 provided with an annular coupling flange 1 is partly inserted through a short branch socket 3 which projects radially from a considerably thicker conduit 4 the wall of which is only fragmentarily shown.
  • the inner end of the cylinder 2 is located slightly inside of the interior wall of the conduit 4 and the cylinder flange 1 is clamped by bolts 5 between an end flange 6 of the socket 3 and an outer ring'7.
  • the ring 7 carries two bracing rods 8 which extend rearwards from the outer end of the cylinder.
  • a spindle 9 extending axially through the cylinder 2 carries two spaced pistons 10,11, and a cover plate 12 which latteris secured to the inner spindle end.
  • each piston may be composed of a central disk 13, a circumferential sealing ring 14 of Teflon (R), rubber or the like, and two washers 15 each disposed on one side of the sealing ring.
  • the cover 12 may be composed of two disks 16,17 of different size, and a sealing ring 18 of Teflon (R), rubber or the like. The ring 18 is kept clamped between the rim portions of the two disks 16,17, in such a way that it engages the inner end of the cylinder 2.
  • a spacing sleeve 19 is slipped on the spindle 9 between the cover 12 and the foremost piston 11, and another spacing sleeve 20 is placed between the two pistons 10,11. All parts put on the spindle are held together between a nut 20' screwed onto the threaded rear end of the spindle and the head 21 of a screw threaded into the fore end of the spindle.
  • the structure described is simple and cheap, but of course the pistons and the cover may also be designed in many other ways.
  • the foremost piston 11 is located at such a distance from the cover 12 that it is still in sealing engagement with the cylinder 2 near its outer end when the sealing ring 18 of the cover engages the inner end of the cylinder.
  • the distance between the two pistons is such that both pistons can seal simultaneously against the inside of the cylinder, the foremost piston 11 near the inner end of the cylinder and the rearrnost piston 10 near the outer end of the cylinder.
  • the spindle 9 may be adapted to be moved by means of a lever or some other mechanism operated manually or mechanically.
  • the rear end of the spindle is connected to a piston rod 22 projecting from a pneumatic cylinder 23 shown only partly.
  • the cylinder 23 is mounted on an annular bracket 24 secured to the two bracing rods 8 mentioned above.
  • the cylinder may, in the known way, be operated by valve mechanisms which may, in turn, be actuated by a time switch that causes the spindle to be reciprocated at determined intervals for withdrawing samples of a suspension flowing through the conduit 4.
  • the sampling device described operates as follows. Initially, the spindle 9 is in the position shown in the drawing, in which the cover 12 seals the inner end of the cylinder 2. This seal is necessary to avoid an overpressure acting upon the in-side of the foremost piston 11 in the inoperative position of the device. In fact, such a pressure might cause some leakage owing to the tendency of the fibers to be clamped between the cylinder wall and the periphery of the piston 11. When the piston is moved inwardly, the quantity of liquid en closed between the cover 12 and the foremost piston 11 is first fed into the conduit 4 to be carried away by the flow therein.
  • a device for withdrawing samples of a suspension flowing through a conduit, particularly a fiber suspension comprising an open-ended cylinder adapted to be introduced through and secured to the wall of the conduit, and a movable spindle extending axially through the cylinder and carrying two spaced pistons slidable in sealing engagement along the inside of the cylinder Wall, the distance between the pistons being less than the length of the cylinder, so that a sampling sluice is formed between said two pistons, characterized in that the inner end of the spindle, (9), carries a cover plate, (12), adapted for sealing engagement with the inner end of the cylinder, (2), and spaced from the foremost piston, (11), by a distance which is less than the length of the cylinder, while the distance between the cover plate, (12), and the rear piston, (10), is greater than the length of the cylinder.

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  • 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)
US00115559A 1970-03-04 1971-02-16 A device for withdrawing samples from a suspension flowing through a conduit Expired - Lifetime US3726143A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE02864/70A SE335021B (fi) 1970-03-04 1970-03-04

Publications (1)

Publication Number Publication Date
US3726143A true US3726143A (en) 1973-04-10

Family

ID=20260877

Family Applications (1)

Application Number Title Priority Date Filing Date
US00115559A Expired - Lifetime US3726143A (en) 1970-03-04 1971-02-16 A device for withdrawing samples from a suspension flowing through a conduit

Country Status (6)

Country Link
US (1) US3726143A (fi)
JP (1) JPS5034643B1 (fi)
CA (1) CA942097A (fi)
DE (1) DE2109789C2 (fi)
FI (1) FI53893C (fi)
SE (1) SE335021B (fi)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114427A (en) * 1975-04-18 1978-09-19 Honshu Seishi Kabushiki Kaisha Apparatus for accurately measuring the freeness of paper stock flowing in a feed pipe
US4218920A (en) * 1979-02-05 1980-08-26 Westinghouse Electric Corp. Nuclear fuel particle bulk density determination
US4262534A (en) * 1979-05-29 1981-04-21 Harold Morrison Liquid sampling system
US4630479A (en) * 1984-05-17 1986-12-23 Bergwerksverband Gmbh Sampling device for solids in a pressurized reactor
WO1987005107A1 (en) * 1986-02-24 1987-08-27 Steven John Dougherty Apparatus for measuring entrained gas phase content
US5129267A (en) * 1990-03-01 1992-07-14 Southwest Research Institute Flow line sampler
US5186792A (en) * 1989-07-19 1993-02-16 Kyoritsu Electric Corporation Apparatus for making dry sheet-like sample of solid particles from a suspension
US5585576A (en) * 1995-04-25 1996-12-17 Jaeger; Ben E. Sampler for fluidized product
US5629471A (en) * 1994-09-22 1997-05-13 Southwest Research Institute Sampling and measuring device with calibrating piston
US20080276730A1 (en) * 2007-05-10 2008-11-13 Vector Corporation Fluid bed sampling device
US9410871B1 (en) * 2012-10-22 2016-08-09 A+ Manufacturing, Llc Apparatus for analytical sampling and/or conditioning of a process gas with selective isolation capability, and method therefore
CN109812700A (zh) * 2019-03-22 2019-05-28 石宏扬 一种天然气管道取样阀
CN114963021A (zh) * 2022-06-27 2022-08-30 四川岚强石油天然气工程勘察设计有限责任公司 一种高含硫气田集输管道腐蚀监测预警装置及方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3064264D1 (en) * 1979-08-23 1983-08-25 Mobil Oil Corp A device for sampling liquid from near the bottom of a container and method of operating such a device
CA2012586C (en) * 1989-07-19 1994-05-17 Masahiro Nishi Method and apparatus for making dry sheet-like sample of solid particles from a suspension, and method and apparatus for measuring pulp concentration

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2811041A (en) * 1955-06-03 1957-10-29 Harold J Beatty Fluid sampler
US3066539A (en) * 1960-07-11 1962-12-04 Sonoco Products Co Sampling device
US3115782A (en) * 1961-04-04 1963-12-31 Consolidation Coal Co Sampling apparatus
NL6804387A (fi) * 1968-03-28 1969-09-30
US3541860A (en) * 1969-03-18 1970-11-24 Goodyear Tire & Rubber Pressure vessel sampling device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1914118A1 (de) * 1969-03-20 1970-10-08 Duisburger Kupferhuette Probenentnahme- und Dosiervorrichtung fuer Fluessigkeiten und Suspensionen
DE6917936U (de) * 1969-05-02 1969-09-18 Karl Widenmann Armaturenfabrik Ventil zur stoffproben-entnahme

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2811041A (en) * 1955-06-03 1957-10-29 Harold J Beatty Fluid sampler
US3066539A (en) * 1960-07-11 1962-12-04 Sonoco Products Co Sampling device
US3115782A (en) * 1961-04-04 1963-12-31 Consolidation Coal Co Sampling apparatus
NL6804387A (fi) * 1968-03-28 1969-09-30
US3541860A (en) * 1969-03-18 1970-11-24 Goodyear Tire & Rubber Pressure vessel sampling device

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114427A (en) * 1975-04-18 1978-09-19 Honshu Seishi Kabushiki Kaisha Apparatus for accurately measuring the freeness of paper stock flowing in a feed pipe
US4218920A (en) * 1979-02-05 1980-08-26 Westinghouse Electric Corp. Nuclear fuel particle bulk density determination
US4262534A (en) * 1979-05-29 1981-04-21 Harold Morrison Liquid sampling system
US4630479A (en) * 1984-05-17 1986-12-23 Bergwerksverband Gmbh Sampling device for solids in a pressurized reactor
WO1987005107A1 (en) * 1986-02-24 1987-08-27 Steven John Dougherty Apparatus for measuring entrained gas phase content
US4700561A (en) * 1986-02-24 1987-10-20 Dougherty Steven J Apparatus for measuring entrained gas-phase content in a liquid
US5186792A (en) * 1989-07-19 1993-02-16 Kyoritsu Electric Corporation Apparatus for making dry sheet-like sample of solid particles from a suspension
US5129267A (en) * 1990-03-01 1992-07-14 Southwest Research Institute Flow line sampler
US5629471A (en) * 1994-09-22 1997-05-13 Southwest Research Institute Sampling and measuring device with calibrating piston
US5585576A (en) * 1995-04-25 1996-12-17 Jaeger; Ben E. Sampler for fluidized product
US20080276730A1 (en) * 2007-05-10 2008-11-13 Vector Corporation Fluid bed sampling device
US9410871B1 (en) * 2012-10-22 2016-08-09 A+ Manufacturing, Llc Apparatus for analytical sampling and/or conditioning of a process gas with selective isolation capability, and method therefore
CN109812700A (zh) * 2019-03-22 2019-05-28 石宏扬 一种天然气管道取样阀
CN109812700B (zh) * 2019-03-22 2021-02-19 杨天舒 一种天然气管道取样阀
CN114963021A (zh) * 2022-06-27 2022-08-30 四川岚强石油天然气工程勘察设计有限责任公司 一种高含硫气田集输管道腐蚀监测预警装置及方法
CN114963021B (zh) * 2022-06-27 2024-04-26 四川岚强石油天然气工程勘察设计有限责任公司 一种高含硫气田集输管道腐蚀监测预警装置及方法

Also Published As

Publication number Publication date
CA942097A (en) 1974-02-19
JPS5034643B1 (fi) 1975-11-10
DE2109789C2 (de) 1985-05-30
SE335021B (fi) 1971-05-10
FI53893B (fi) 1978-05-02
FI53893C (fi) 1978-08-10
DE2109789A1 (fi) 1971-09-30

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