US3597978A - Device for sampling liquids from vacuum operating equipments - Google Patents

Device for sampling liquids from vacuum operating equipments Download PDF

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Publication number
US3597978A
US3597978A US884244A US3597978DA US3597978A US 3597978 A US3597978 A US 3597978A US 884244 A US884244 A US 884244A US 3597978D A US3597978D A US 3597978DA US 3597978 A US3597978 A US 3597978A
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United States
Prior art keywords
component
movable
valve
movable component
assembly
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Expired - Lifetime
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US884244A
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English (en)
Inventor
Francesco Siclari
Franco Magnoni
Battista Morandi
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SNIA Viscosa SpA
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SNIA Viscosa SpA
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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

Definitions

  • the device according to the invention is particularly adapted to be associated with polymerization reaction vessels and like equipments of the chemical industry, any other suitable application being however foreseen, under conditions conand even temporarily reset the atmospheric pressure in the environment must be excluded.
  • this invention is to provide a device, having an unusually simple design, adapted to operate under the most convenient working conditions and wherein the restrictions and drawbacks of the heretofore known devices are, obviated. More detailedly, this invention concerns a device for sampling liquids from equipments that. operate at a subatmospheric pressure and practically under a high vacuum, comprising a component adapted to be permanently secured to said equip ment, in particular but not necessarily to the bottom of the vacuum processing environment and including a valve system having a movable component preferably in the form of a ball,.
  • I j which operates to sealingly engage a seat formed at the end of xponent and designed to act as a control member, operable from the outside,'by which the valve ball can be released from -said seat and 'the outlet passage can be opened when the required pressure conditions upstream and downstream said passage are attained.
  • DRAWINGS FlG. l is an exploded side view of'the main components of the device.
  • FIG. 2 is a side view, partly in a section on its symmetry plane, of'the device. as already fitted to the related equipment, and preset for carrying out the first evacuation step at the downstream side.
  • FIG. 3 is a fragmentary longitudinal section of the device having a passage through which the sample is taken out, in its open conditions.
  • FIG. 4 is a cross section, taken on the plane lV-lV of FIGS. 1 and 2, ofthe removable portion of device.
  • Said assembly 10 comprises a firmly secured body 14, having a suitable pipefitting or connector 15, by which it can be fastened to said wall 11 and through which a passage 16 is provided, having one end permanently in communication with the inside of the equipment, while its opposite end leads into a small chamber 17, wherein a metal ball 18 is situated.
  • Said ball defines a valve movable component and sealingly cooperates with a supporting annular seat, that is formed on said end 19 (FIG. 3) of the passage 16, leading into the chamber 17.
  • An outside threaded portion 21 of a movable member 22 can be screwed into an inside threaded connector 20, as formed on the bottom of said'chamber 17.
  • a noncircularly, e.g., polygonally shaped, portion 23 of said movable member 22 extends below the fixed body 14, as it can be seen in FIG. 1.
  • a throughout passage 24, as formed inside the movable member 22 extends upwardly through a-plurality of narrow channels 25 leading into said chamber 17, the upper end of said member 22 acting as a rest means for the ball 18, which can be thereby firmly forced against the seat 19 of the passage 16 by screwing upwardly said movable piece 22, as shown in FIG. 2.
  • said member 22 by loosening said member 22 relative to the fixed body 14., e.g., as shown in FIG. .3, the ball 18 is lifted out of the seat 19 and the passages 16 and 24 can communicate with each other.
  • Said bottom flange 29 is on turn preferably formed with a passage 32, having a pipe duct 33, through which the whole device can be connected to a vacuum pump, or other means adapted to maintain a high vacuum below said flange and thus in the beaker 13.
  • the components 12 and 13 will be kept firmly engaged with each other as in FIG. 2 as soon as a given vacuum value is attained through thepassage 32. 4
  • a ring 34 is secured inside the upper end of the component 12, said ring comprising an inner wall shaped in such a manner as to allow its engagement like a female wrench with said portion 23 of the movable member 22 that .forms apart of thefixed assembly 10. Accordingly, when the different components are mutually engaged as'shown in FIG. 2, by acting from the outside, i.e., by
  • the liquid flowing-off can be stopped by screwing the component 12 into the fixed assembly 10, until the ball is sealingly forced against its seat 19. Then, the beaker 13 is vented to the atmosphere (or put in communication with a source of a gas not affecting the sampled liquid), whereafter the components 12 and 13 can be removed from the fixed assembly and the sample can be taken out for a test.
  • the ball 18 may be released even before a vacuum is applied to beaker 13.
  • said ball acts like the movable component of a check valve, and automatically opens when the downstream pressure is reduced down to a value sufficient to allow the ball 18 to fall downwardly under the combined action of the gravity force and of the upstream pressure. It is possible to conveniently follow said procedure, when a not too high vacuum is maintained within the equipment; obviously, the sample flowing-off will begin only when the downstream vacuum is higher than the upstream one.
  • the device according to the invention has been previously described under the most typical operating conditions, i.e., for sampling liquids contained inside of vacuum operated equipments, which obviously are those requiring the overcoming of greatest difficulties and the solution of specific technical problems.
  • an efficiently controlled valve is formed by the components of the assembly 10, since the ball 18, firmly pressed against the seat 19 at the outlet of the passage 16, will ensure a tight sealing even under remarkably high pressures.
  • the valve can be opened to allow a sample flowing through the passages 25 and 24 and into the sampling container.
  • the different components as shown'in FIG. 1, or other equivalent ones may be associated e.g., as shown in H0. 2, in order to previously create and maintain the nitrogen or other gas atmosphere in the passages and in the sampling container.
  • the sampling container 13 instead of a beaker, as shown, might be in the form of a round-bottomed flask, preferably having a cone-shaped frosted neck.
  • Such flask should be adapted to tightly engage a tapered male connector formed e.g., by an extension of the component 28, or also by the same component 28, which in this case is lacking the flange 29.
  • the connector 32, 33 through which the air is evacuated and the required atmosphere in the sampling container is created, may be secured to the upper end of the component 28, or it may be integral with the round-bottomed flask or other sampling container.
  • the device may be completedwith other means, when necessary or convenient, e.g., for heating some or all its components, e.g., for sampling products requiring to be kept at a given temperature for ensuring a liquid condition thereof.
  • the heating means may be in the form e.g., of electric resistances, pipe coils through which a heating liquid or gas is circulated and the like, and such means may be structurally associated and embodied in said components, when the particular application of device requires a permanent or prevalent heating thereof.
  • a device for sampling liquids from vacuum operating equipments comprising: a fixed assembly, designed to be permanently secured to the equipment and in particular to the bottom of the reaction environment wherefrom the samples are to be taken out and having a passage fitted with a check valve provided with a valve movable component arranged in such a manner as to spontaneously, sealingly engage a related seat when the downstream pressure exceeds by a given, small value the upstream pressure inside the environment; a movable assembly, having a container wherein the sample is collected, connection means for evacuating said container down to a vacuum higher than that existing within said environment, means by which a tight connection with said seat in said fixed assembly passage can be established, and means by which a mechanical engagement with a member of said fixed assembly is provided and by which said valve movable component can be engaged with or released from said related seat, whereby when said assemblies are engaged with one another, said check valve can be opened and closed from the outside in order to control the start and the end of the sample flowing into said container.
  • valve movable component is in the form of a metal valve ball and said related seat is formed by a circular edge, whose diameter is smaller than that of said ball.
  • said fixed as sembly comprises a movable components, in particular a screw-threaded component, which is connected with the fixed portion wherein said valve seat is formed and abuts said valve movable component in order to force the same against said valve seat, said components being formed with a noncircularshaped outer part adapted to torsionally engage a similarly shaped component, secured to said connection means of the movable assembly, whereby said valve movable component can be engaged and released by turning at least one component ofsaid movable assembly.
  • said movable assembly comprises a tubular components having a flanged upper end tightly abutting against a stationary component of said fixed assembly, said tubular component comprising means to establish a mechanical engagement with said movable component designed to engage and release said valve movable component, while the lower end of said tubular component is formed with a second flange against which the upper edge of a beaker or other sample collecting container can be tightly abutted.
  • a device wherein said second flange is formed with a passage leading below the same into said beakeror other container, said passage being fitted with a pipe connection to a vacuum pump or other suitable means adapted to produce a vacuum, within said beaker or con- .t'ainer higher :ment. w
  • sembly is formedwith'an axially directed passage leading into said processing environment and into a space wherein said valve movable component is fitted.
  • said assembly below said space, being formed with an inner threaded part that engages with an outerthreaded part as formed insaid movable component designed to engage andrelease said valve movable components in respect of the outlet ofsaid passage,
  • said movable component is polygonally-shaped,-the upper end 'of said nio'vable assembly .tubu lar component comprising a ring which inneriside is correspondingly polygonally shaped, .whereby to act like a wrench .when engaged with said polygonally shaped lower end of said-movable component,

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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)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US884244A 1968-12-30 1969-12-11 Device for sampling liquids from vacuum operating equipments Expired - Lifetime US3597978A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2570268 1968-12-30

Publications (1)

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US3597978A true US3597978A (en) 1971-08-10

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US884244A Expired - Lifetime US3597978A (en) 1968-12-30 1969-12-11 Device for sampling liquids from vacuum operating equipments

Country Status (8)

Country Link
US (1) US3597978A (de)
JP (1) JPS4832755B1 (de)
BE (1) BE743280A (de)
DE (1) DE1963539C3 (de)
ES (1) ES375039A1 (de)
FR (1) FR2027324A1 (de)
IE (1) IE33680B1 (de)
NL (1) NL6903262A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591337A1 (fr) * 1985-12-10 1987-06-12 Pons Roger Dispositif de prelevement d'un volume predetermine de liquide a l'interieur d'une installation sous vide
FR2633395A1 (fr) * 1988-06-28 1989-12-29 Wiederaufarbeitung Von Kernbre Poste de remplissage pour le prelevement d'echantillons de solutions radioactives
US5176035A (en) * 1984-05-12 1993-01-05 Tru-Test Corporation Limited Metering arrangement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3149116C2 (de) * 1981-12-11 1985-04-04 Hansjosef 4358 Haltern Scheideler Ventil zur Probeentnahme von flüssigen Medien

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844964A (en) * 1952-12-06 1958-07-29 Francis W Guibert Liquid sampler
US3308669A (en) * 1965-01-27 1967-03-14 Frederick G J Grise Proportionate liquid sampling device, specifically a milk scale

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844964A (en) * 1952-12-06 1958-07-29 Francis W Guibert Liquid sampler
US3308669A (en) * 1965-01-27 1967-03-14 Frederick G J Grise Proportionate liquid sampling device, specifically a milk scale

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5176035A (en) * 1984-05-12 1993-01-05 Tru-Test Corporation Limited Metering arrangement
FR2591337A1 (fr) * 1985-12-10 1987-06-12 Pons Roger Dispositif de prelevement d'un volume predetermine de liquide a l'interieur d'une installation sous vide
FR2633395A1 (fr) * 1988-06-28 1989-12-29 Wiederaufarbeitung Von Kernbre Poste de remplissage pour le prelevement d'echantillons de solutions radioactives
US4991450A (en) * 1988-06-28 1991-02-12 Deutsche Gesellschaft Fur Wiederaufarbeitung Von Kernbrennstoffen Mbh Filling arrangement for taking a sample of a radioactive process solution

Also Published As

Publication number Publication date
FR2027324A1 (de) 1970-09-25
IE33680B1 (en) 1974-09-18
ES375039A1 (es) 1972-03-16
DE1963539B2 (de) 1978-05-03
DE1963539C3 (de) 1979-02-01
JPS4832755B1 (de) 1973-10-08
BE743280A (de) 1970-05-28
DE1963539A1 (de) 1970-08-27
NL6903262A (de) 1970-07-02
IE33680L (en) 1970-06-30

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