WO1999008089A1 - Dispositif de prelevement d'echantillons d'un liquide dans un reservoir - Google Patents
Dispositif de prelevement d'echantillons d'un liquide dans un reservoir Download PDFInfo
- Publication number
- WO1999008089A1 WO1999008089A1 PCT/CH1998/000283 CH9800283W WO9908089A1 WO 1999008089 A1 WO1999008089 A1 WO 1999008089A1 CH 9800283 W CH9800283 W CH 9800283W WO 9908089 A1 WO9908089 A1 WO 9908089A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- test piece
- openings
- piston
- sliding plug
- action
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/56—Labware specially adapted for transferring fluids
- B01L3/561—Tubes; Conduits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/508—Containers for the purpose of retaining a material to be analysed, e.g. test tubes rigid containers not provided for above
-
- 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
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
-
- 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
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
Definitions
- the present invention relates to a device for taking samples of a liquid in a reservoir, and more particularly to a device comprising a test piece which is connected to an actuating device by means of an intermediate element, the '' test piece comprising openings which can be closed or not closed by the action of a piston so that, in the non-closed position, a liquid can be introduced into the cavity of the test piece when it is immersed in a tank containing a liquid.
- the sampling devices are used to take samples of a liquid which is contained in a tank, a tank or a barrel, for example. These devices can be used for the collection of all kinds of liquids and in various fields, but they are particularly used in the chemical and nuclear fields for taking samples of toxic liquids, the samples being intended for analysis in control laboratories. For the sampling of toxic liquids, it is essential that the sampling devices are designed so that the operator cannot be in contact with the liquid, during the sampling and during transport to the laboratory.
- the aims of the present invention therefore consist in remedying the aforementioned drawbacks of the known embodiments.
- the device for taking samples of a liquid contained in a reservoir comprises, according to the principles of the invention, a test piece which is cylindrical and which comprises a cylindrical cavity. Openings are made in the wall of the test piece.
- a piston is slidably mounted in the upper part of the test piece.
- the piston can be actuated in a closed position in which it closes the openings, and in an open position in which the openings are not closed.
- the upper part of the piston has bayonet openings which are intended to cooperate with the lugs which are mounted in the lower part of an actuating rod which is slidably mounted in an intermediate element.
- the actuating rod is subjected to the action of a compression spring.
- the intermediate element is connected to an actuating device allowing the specimen and the intermediate element to be lowered into a tank for sampling and to be reassembled after sampling.
- a sliding plug is mounted in the lower part of the test piece. The sliding plug closes the lower part of the test piece during sampling and transport and is removed to take the sample in the laboratory. The fact that the sliding plug can slide in the lower part of the test piece makes it possible to compensate for the presence of air in the cavity of the test piece.
- the test piece is screwed to the lower part of the intermediate element, the tabs of the actuating rod being engaged in the bayonet openings made in the piston.
- the piston is held in the closed position of the openings by a compression spring which is mounted in the upper part of the intermediate element and which acts on the actuating rod which has an actuating element at its upper end.
- An element release is mounted in the upper part of the intermediate element and comprises an actuating portion.
- the release element is arranged so as to act on the spring, that is to say so as to suppress the action of the spring on the actuating rod, therefore on the piston, during the removal of the 'test tube.
- Figure 1 is a sectional view of the sampling device with the piston in the closed position.
- Figure 2 is a sectional view of the sampling device with the piston in the sampling position.
- Figure 3 is a sectional view of the test piece of the device with an upper plug.
- Figure 4 is a sectional view of the test piece of the device without the sliding plug.
- Figure 5 is a side view of the piston with a bayonet opening.
- FIG. 6 is a bottom view of the lower part of the actuating rod with the bayonet latches.
- Figure 7 is a side view of the specimen with an opening.
- Figure 8 is an overall sectional view of the sampling with a reservoir and an actuating device.
- the sampling device comprises a test piece 1 and an intermediate element 18 which are assembled together by thread-tapping 19.
- the test piece 1 which has a cylindrical shape, has a cavity cylindrical 2 which has a lower portion and an upper portion, the upper portion being of a diameter greater than the lower portion so as to constitute a shoulder 11.
- a piston 9 is slidably mounted in the upper part of the cavity 2 and comes in abutment on one shoulder 11 in the closed position.
- Openings 3 and 6 are made in the wall of the test piece 1.
- the upper walls 4 and 7 and lower 5 and 8 of the openings 3 and 6 are made with a clearance angle, which allows the flow of residual liquid.
- the openings 3 and 6 are arranged above the shoulder 11 so that they are closed by the piston in the closed position.
- a seal 10 is mounted in a groove made in the piston.
- the seal 10 makes it possible to guarantee the tightness of the test piece and also makes it possible to avoid untimely movements of the piston by the friction force.
- the upper part of the piston has bayonet openings 12 and
- the intermediate element 18 has a bore 17 in which slide the lower part 16 and a rib 28.
- the upper part of the intermediate element 18 comprises a shoulder 31.
- a release element 29 is partially mounted in the bore 17 and comprises a shoulder 30 which constitutes with the shoulder 31 of the intermediate element a housing for a compression spring 32.
- a rib 28 formed on the actuating rod 27 abuts against the lower part of the release element 29.
- the release element 29 comprises an actuating washer 33 at its upper end.
- the actuating rod has an actuating washer 34 at its upper end.
- a sliding plug 20 is mounted in the lower part of the test piece.
- the sliding plug 20 has a thread 23 which is intended to cooperate, in the mounting and dismounting position, with a thread 24 which is formed in the cavity 2.
- the sliding plug 20 has a cavity 22 and a shoulder 21.
- the plug 20 has a lower part which is intended to cooperate with the lower and inner part of the cavity 2, an intermediate part 25 which is of a smaller diameter and the thread 23.
- a seal 26 is mounted in a groove which is formed in the lower part sliding plug.
- the sliding plug is screwed into the thread until the thread comes out of the thread. In this position, the sliding plug is free and can slide upwards until the shoulder 21 comes into contact with the lower end of the test piece. If the sliding plug moves downwards, the thread of the sliding plug comes to a stop on the thread.
- the upper end of the actuating rod 27 can be connected to an actuating device 35.
- Figure 2 shows the device in a sampling position.
- the intermediate element 18 can be actuated manually downwards, which has the effect of compressing the spring 32 and of placing the piston 9 in the sampling position, position in which the openings 3 and 6 are released.
- liquid can be introduced into the cavity 2 of the test piece 1.
- the plug 20 can move upward under the effect of 'a depression, for example.
- FIG. 3 shows the test piece 1 which has an upper plug 36.
- the test piece When the test piece is filled with liquid, it is disengaged from the intermediate element and the upper plug 36 is mounted for transport.
- the upper plug 36 holds the piston so that the openings 3 and 6 are closed.
- FIG. 4 shows the test piece 1 with the internal thread 24.
- FIG. 5 shows a bayonet opening 12 which is formed in the upper part of the piston 9.
- Figure 6 shows the bayonet tabs 14 and 15 which are mounted in the lower part 16 of the actuating rod.
- Figure 7 shows one of the openings 6 which is formed in the wall of the test piece 1.
- the opening may have a rectangular shape with spokes in the upper and lower parts.
- Figure 8 shows the test piece 1 which is immersed in a liquid 38 which is in a tank 37.
- the sampling device is actuated in the sampling position shown in Figure 8 or out of the tank by the action of a actuating device 35 which can be constituted by a piston or by an electric motor for example.
- the upper part of the reservoir has a sleeve 39 which has a seal 40.
- the seal 40 has a cleaning function, that is to say that it cleans the intermediate element and the test piece when they come out of the inside the tank, so as to prevent liquid remaining on the walls of the intermediate element and of the test piece, this in order to guarantee that the operator cannot be in contact with toxic liquid when he disengages 1 'test tube.
- the test piece is mounted on the intermediate element by engaging the bayonet lugs in the - bayonet openings of the piston.
- the test piece is screwed onto the intermediate element.
- the piston is held in the closed position by the spring.
- the test piece and the intermediate element are introduced into the reservoir by the action of the actuating device.
- the part of the intermediate element which is located outside the reservoir can be actuated manually downwards which releases the piston from the openings of the test piece and which allows the liquid to be introduced into the cavity of the test piece.
- the intermediate element is released, which automatically returns the piston to the closed position under the action of the spring.
- the test piece and the intermediate element are then come out of the tank being cleaned by the cleaning gasket.
- the operator manually actuates the release element so as to release the actuating rod from the action of the spring, which allows the bayonet lugs to be released by rotation from the bayonet openings.
- the test piece is unscrewed from the intermediate element and during this operation the piston remains held in the closed position by the action of the friction force of the seal.
- the operator installs the upper cap on the test piece for transport to the laboratory. In the laboratory, the sliding cap is removed, by mechanical means, and the liquid contained in the test tube can flow into a container.
- Figure 8 shows the sampling device which is actuated by an actuating device.
- the sampling device can also be actuated manually without an actuating device.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Hematology (AREA)
- Hydrology & Water Resources (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98928046A EP0950176A1 (fr) | 1997-08-08 | 1998-06-30 | Dispositif de prelevement d'echantillons d'un liquide dans un reservoir |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH187797 | 1997-08-08 | ||
CH1877/97 | 1997-08-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999008089A1 true WO1999008089A1 (fr) | 1999-02-18 |
Family
ID=4220682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH1998/000283 WO1999008089A1 (fr) | 1997-08-08 | 1998-06-30 | Dispositif de prelevement d'echantillons d'un liquide dans un reservoir |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0950176A1 (fr) |
WO (1) | WO1999008089A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3045824A1 (fr) * | 2015-12-18 | 2017-06-23 | Areva Nc | Dispositif et procede de prelevement d'echantillons de materiaux radiologiquement contamines, tels que des resines ou des boues |
CN107735028A (zh) * | 2015-06-03 | 2018-02-23 | 生物技术研究所I+D有限公司 | 用于收集血液或血液复合物的装置 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3119272A (en) * | 1961-12-26 | 1964-01-28 | California Research Corp | Pressure sampling device |
US3813945A (en) * | 1971-11-19 | 1974-06-04 | Nielsen Eng & Res Inc | Apparatus for extracting a liquid sample at various depths of a liquid stream |
US4147062A (en) * | 1978-03-02 | 1979-04-03 | Jaeger Ben E | Liquid sampler |
GB2222141A (en) * | 1988-08-25 | 1990-02-28 | Coal Ind | Liquid sampling adaptor |
US5031469A (en) * | 1988-11-30 | 1991-07-16 | Blackburn Robert E | Fluid sampler |
US5146792A (en) * | 1990-01-30 | 1992-09-15 | Neotech Ag | Sampling device with a valve unit and a receiving unit |
US5191801A (en) * | 1990-03-20 | 1993-03-09 | Precision General, Inc. | Fluid sampling pump |
US5566576A (en) * | 1992-09-02 | 1996-10-22 | Norton Company | Universal sampling device for high and low viscosity substances |
-
1998
- 1998-06-30 WO PCT/CH1998/000283 patent/WO1999008089A1/fr not_active Application Discontinuation
- 1998-06-30 EP EP98928046A patent/EP0950176A1/fr not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3119272A (en) * | 1961-12-26 | 1964-01-28 | California Research Corp | Pressure sampling device |
US3813945A (en) * | 1971-11-19 | 1974-06-04 | Nielsen Eng & Res Inc | Apparatus for extracting a liquid sample at various depths of a liquid stream |
US4147062A (en) * | 1978-03-02 | 1979-04-03 | Jaeger Ben E | Liquid sampler |
GB2222141A (en) * | 1988-08-25 | 1990-02-28 | Coal Ind | Liquid sampling adaptor |
US5031469A (en) * | 1988-11-30 | 1991-07-16 | Blackburn Robert E | Fluid sampler |
US5146792A (en) * | 1990-01-30 | 1992-09-15 | Neotech Ag | Sampling device with a valve unit and a receiving unit |
US5191801A (en) * | 1990-03-20 | 1993-03-09 | Precision General, Inc. | Fluid sampling pump |
US5566576A (en) * | 1992-09-02 | 1996-10-22 | Norton Company | Universal sampling device for high and low viscosity substances |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107735028A (zh) * | 2015-06-03 | 2018-02-23 | 生物技术研究所I+D有限公司 | 用于收集血液或血液复合物的装置 |
FR3045824A1 (fr) * | 2015-12-18 | 2017-06-23 | Areva Nc | Dispositif et procede de prelevement d'echantillons de materiaux radiologiquement contamines, tels que des resines ou des boues |
GB2547748B (en) * | 2015-12-18 | 2021-10-20 | Areva Nc | Device and method for taking samples of radiologically contaminated materials, such as resins or sludges |
Also Published As
Publication number | Publication date |
---|---|
EP0950176A1 (fr) | 1999-10-20 |
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