EP4078133A1 - Récipient de prélèvement d'échantillon transportable, système de prélèvement d'échantillon, et procédé de prélèvement d'un échantillon - Google Patents

Récipient de prélèvement d'échantillon transportable, système de prélèvement d'échantillon, et procédé de prélèvement d'un échantillon

Info

Publication number
EP4078133A1
EP4078133A1 EP20824905.2A EP20824905A EP4078133A1 EP 4078133 A1 EP4078133 A1 EP 4078133A1 EP 20824905 A EP20824905 A EP 20824905A EP 4078133 A1 EP4078133 A1 EP 4078133A1
Authority
EP
European Patent Office
Prior art keywords
sampling
fitting
container
sampling container
retractable
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.)
Pending
Application number
EP20824905.2A
Other languages
German (de)
English (en)
Inventor
Torsten Rest
Walter Wiegand
Einar MÖLLER
Thomas Pfauch
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.)
K+S AG
Endress and Hauser Deutschland GmbH and Co KG
Original Assignee
K+S AG
Endress and Hauser Deutschland GmbH and Co KG
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 K+S AG, Endress and Hauser Deutschland GmbH and Co KG filed Critical K+S AG
Publication of EP4078133A1 publication Critical patent/EP4078133A1/fr
Pending 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
    • 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
    • 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
    • G01N2001/1031—Sampling from special places

Definitions

  • Transportable sampling container, sampling system and method for sampling are Transportable sampling container, sampling system and method for sampling
  • the invention relates to a sampling container for a fluid contained in a process container, a sampling system comprising a sampling container and a lock fitting, and a method for sampling.
  • the fluid is a flowable medium, for example an at least partially liquid and / or gaseous medium.
  • Electrochemical sensors use electrochemical measurement technology or analytical measurement technology to record the activities of chemical substances in order to record a correlated process variable of the process medium.
  • Such electrochemical sensors can be designed, for example, as potentiometric sensors such as ion-selective electrodes (ISE), especially pH electrodes, or amperometric sensors, such as disinfection sensors.
  • ISE ion-selective electrodes
  • pH electrodes ion-selective electrodes
  • amperometric sensors such as disinfection sensors.
  • electrochemical sensors includes those based on electrolyte-insulator-semiconductor layer stacks (English: electrolyte-insulator-semiconductor, for short: EIS), conductive or capacitive conductivity sensors, and (spectro) - photometrically operating sensors, for example turbidity sensors.
  • EIS electrolyte-insulator-semiconductor
  • conductive or capacitive conductivity sensors conductive or capacitive conductivity sensors
  • (spectro) - photometrically operating sensors for example turbidity sensors.
  • the electrochemical sensors are moved, manually or automatically, axially between a process position and a service position of the retractable fitting. In the service position, the electrochemical sensor is typically sealed against the fluid. The electrochemical sensor can be removed from the retractable fitting in the service position and thus checked, calibrated, cleaned and / or replaced.
  • a sampling device which comprises a sampling valve serving as a lock fitting.
  • the sampling valve is designed to be fixed to a standardized fermenter nozzle and has a sample chamber of defined volume. After the valve is closed, the rear sealing element opens the way to a transport line connected to it.
  • a disadvantage of the solution given in DE 102006 19242 A1 is, on the one hand, that the transport line is not completely sealed off from the fluid. On the other hand, the sample chamber itself is not transportable, so that the sample has to be diverted from the sample chamber by means of the fluid line.
  • DE 102014 102600 A1 discloses a dip tube serving as a lock fitting, in which, in a first position of the dip tube, the end of a liquid line is immersed in a liquid contained in a process container.
  • the liquid can be transported from the process container into the collecting vessel by applying a pressure difference between the first end of the liquid line and a second end of the liquid line opening into a collecting vessel.
  • the invention is therefore based on the object of specifying a solution that can be integrated into a lock fitting in order to remove a sample as easily as possible from a process container which is sealed in a fluid-tight manner.
  • sampling container a sampling system, comprising a sampling container and a lock fitting, and a method for sampling.
  • the object is achieved by a transportable sampling container for taking a sample of a fluid contained in a process container, the sampling container being adjustable between a sampling position and a transport position, wherein in the sampling position at least one is arranged on a first end section of the sampling container and in a The closable opening leading to the interior of the sampling container is open, a sample chamber arranged in the interior being sealed fluid-tight in the transport position, and the sampling container being insertable into a movable lock fitting connected to the process container in such a way that the lock fitting is in a first extended position of the lock fitting the process container is sealed in a fluid-tight manner and that in a second retracted position of the lock fitting the sampling container seals the process container in a fluid-tight manner t seals and the sampling container inserted into the lock fitting protrudes with its first end section into the fluid.
  • At least one opening is provided through which the fluid can flow into the sample chamber.
  • several such openings can also be provided, which are arranged in different areas of the first end section. This improves the sampling, for example if the fluid is a directed flow in which the end section is exposed to different flows in different areas.
  • Sampling is possible essentially without interruption in relation to a process that the fluid is running through, since the process container is sealed fluid-tight from the environment at all times during the insertion and / or removal of the sampling container.
  • the lock fitting seals the process container in a fluid-tight manner.
  • the sampling container is introduced into the fluid with the lock fitting as a probe.
  • the sampling container e.g. open or closed
  • the sampling container can be inserted into the lock fitting. If the lock fitting is then moved axially into the retracted position, the sampling container (opened or closed) seals the process container in a fluid-tight manner.
  • the sampling container may also have at least one sealing element.
  • the transportable sampling container can be inserted directly into a lock fitting. Therefore, no additional access to the process container has to be created for sampling. This is particularly advantageous if a lock fitting is already available, for example because it is already being used as an interchangeable fitting for an electrochemical sensor.
  • the sampling container can e.g. be used instead of the electrochemical sensor if it is removed from the retractable fitting. As already mentioned, this is often the case with electrochemical sensors, for example for cleaning, maintenance, calibrating, verifying and / or adjusting and / or for replacing the electrochemical sensor.
  • the sampling container has two mutually movably mounted components, whereby the at least one opening can be closed and opened by moving the two components relative to each other, so that the sampling container can be adjusted by means of the relative movement between the sampling position and the transport position, whereby in particular at least a first of the two components is sleeve-shaped, and wherein the sample chamber is arranged in the sleeve-shaped first component.
  • the opening arranged on the end section is therefore opened or closed by the relative movement. Since the end area is in contact with the fluid in the retracted position of the lock fitting, the fluid can flow into the sample chamber arranged in the interior when the sampling container is in the sampling position.
  • the relative movement is a rotation of the two components against each other, especially around an axis that is essentially parallel to the longitudinal direction of the sleeve-shaped first component, and / or the relative movement is a displacement of the two Components against each other, especially in the longitudinal direction of the sleeve-shaped first component.
  • the second component is, for example, a plug-shaped component corresponding to the first sleeve-shaped component, which is designed to, when executing the relative movement, in this case at least a displacement of the two components against each other, especially in the longitudinal direction of the sleeve-shaped first component, which to close sleeve-shaped first component.
  • it is a dispenser in which a stopper is mounted so that it can be moved against a sleeve.
  • the second component is also a sleeve-shaped component.
  • the first of the two components can concentrically surround the second component, and the first sleeve-shaped component can have at least one cutout and the second sleeve-shaped component can have a cutout that is congruent at least in some areas.
  • the two recesses can be brought into congruence with one another in such a way that the recesses of the sleeve-shaped components that are brought into congruence with one another form the opening.
  • it is a sample spike, in which, for example, a rotation and / or displacement to bring the two recesses into congruence is possible, with which the adjustment from the transport position to the sampling position takes place.
  • the second component can also be both plug-shaped and sleeve-shaped, for example, have a plug-shaped section and a sleeve-shaped section.
  • a filter unit is arranged between the at least one opening and the sample chamber, which is designed to filter a fluid flowing in through the at least one opening before it flows into the sample chamber.
  • a wall of the sample chamber is displaceable, in particular mounted in the longitudinal direction of the sleeve-shaped first component, and in the sampling position a fluid in contact with the first end section can flow into the sample chamber by increasing the volume of the sample chamber by means of a The displacement of the wall is increased and the fluid is thereby sucked into the sample chamber through the at least one opening.
  • the wall can be shifted, for example, in that for the sampling container inserted into the lock fitting in the sampling position, as with a syringe, a pull-up element mechanically coupled to the wall can be operated by a user.
  • the pull-on element is arranged, for example, on a second end section opposite the first end section in the longitudinal direction of the sleeve-shaped component in such a way that it can also be operated by the user in the retracted position of the lock fitting. In this case, a negative pressure is generated in the interior of the sample chamber, as a result of which the fluid is sucked into the sample chamber through the opening.
  • the wall is displaced in that a spring element mechanically coupled to the wall and initially tensioned is relaxed, the volume of the sample chamber being increased when the spring element is relaxed. Exactly as in the above-mentioned syringe-like variant, this creates a negative pressure which is compensated for by the fluid flowing into the sample chamber through the opening.
  • Another possibility is, for example, the operation of a magnetic switch.
  • a second end section of the sampling container which is essentially opposite the first end section in the longitudinal direction of the first sleeve-shaped component, is mechanically coupled to the first end section in such a way that the sampling container can be adjusted between the sampling position and the transport position by operating the second end section is, especially in that the operation causes the relative movement of the two mutually movably mounted components. So that the second end section can be operated, it protrudes, for example, in the retracted position of the Sampling container out of the lock fitting.
  • the mechanical coupling is, for example, a fixed connection between the second end section with the first component or the second component of the two mutually movably mounted components.
  • connection is designed in such a way that a movement caused by the, in particular manual, operation of the second end section at the second end section of one of the two components is moved in such a way that the opening is closed, for example by pulling the plug-shaped component over the sleeve-shaped component.
  • a sampling system comprising a transportable sampling container according to the invention and a lock fitting
  • the sampling container inserted into the lock fitting being adjustable between the sampling position and the transport position, in particular by operating the sampling container inserted into the lock fitting at least from the sampling position can be brought into the transport position, and in particular the sampling container inserted into the lock fitting can be adjusted from the sampling position into the transport position by the second end section of the sampling container inserted into the lock fitting protruding from the lock fitting and being manually operable by a user.
  • the sampling container of the sampling system can therefore be inserted into the lock fitting in the sampling position and then the lock fitting can be moved into the retracted position so that the fluid can flow into the sample chamber. If necessary, the flow into the sample chamber is supported, as mentioned above, by the displacement of the wall of the sample chamber. This is caused, for example, by a process pressure of the fluid that is higher than the ambient pressure and / or a manually operated pull-up element and / or the relaxation of a tensioned spring element.
  • At least one elastically deformable locking element is arranged between the two mutually movably mounted components, which counteracts a movement of the two mutually movably mounted components, and the locking element is designed in such a way that when operated on the second end section for adjustment from the sampling position to the transport position when executing the relative movement, the locking element can be overcome with elastic deformation of the locking element, and that the locking element blocks a return adjustment from the transport position to the sampling position, which is carried out by operating the second end section.
  • the locking element has the effect that in the state in which the sampling container is inserted into the lock fitting, the sampling container can no longer be brought into the sampling position by operating the second end section after it has been moved from the sampling position to the transport position.
  • the operation includes, for example, a rotary movement in a first direction, by means of which the opening is closed by means of the mechanical coupling, and if the sampling container is brought into the transport position, a rotary movement in an opposite direction does not cause the opening to reopen.
  • the sampling container can be moved once from the sampling position into the transport position via the second end section in the state inserted into the lock fitting.
  • the lock fitting is an interchangeable fitting for an electrochemical sensor that is designed to determine and / or monitor a process variable of a fluid contained in a process container
  • the sampling container is adapted to the design of the lock fitting and the Embodiment of the electrochemical sensor is adapted that the sampling container can be used in an insertion position provided for the electrochemical sensor instead of the electrochemical sensor in the retractable fitting.
  • the retractable fitting is a retractable retractable fitting that can only be moved in the event that an electrochemical sensor is inserted into the retractable retractable fitting
  • the sampling system having an adapter for overcoming the retractable retractable fitting, with the adapter is designed in such a way that, in the event that the adapter and the sampling container are inserted into the retractable retractable fitting instead of the electrochemical sensor, the retractable fitting can be moved.
  • the electrochemical sensor can be screwed into the retractable fitting via a retractable fitting internal thread provided for the electrochemical sensor
  • the adapter has an adapter external thread and the adapter can be inserted into the retractable fitting by inserting the adapter external thread into the retractable fitting internal thread can be screwed in for the electrochemical sensor.
  • Many of the interchangeable fittings known from the prior art have such a retractable lock in which the retractable fitting can only be moved when the electrochemical sensor or a probe with a corresponding external thread is inserted into a retractable fitting internal thread.
  • the adapter is therefore used to fill the retractable fitting internal thread with its external thread.
  • the retractable fitting can therefore also be moved axially by means of the adapter without an electrochemical sensor inserted therein.
  • the adapter is firmly, in particular non-detachably, connected to the sampling container.
  • the adapter is, for example, essentially encompassed by the sampling container.
  • the adapter can be detachably connected to the sampling container, in particular in that an external threading of a sampling container can be screwed into an internal adapter thread.
  • the adapter and the sampling container are two separate components of the sampling system.
  • the adapter can be designed as essentially unlimited reusable, i.e. for several sampling processes with the same lock fitting, whereas the sampling container is only designed for a limited number of sampling processes, in the extreme case as a so-called single-use product.
  • the sampling container and the adapter are coordinated with one another in such a way that the sampling container can be screwed into the adapter internal thread of the adapter inserted into the retractable fitting by means of a screwing movement that can be transmitted via the second end section, via the sampling container external thread, and that at Continuing the same screwing movement by means of a mechanical coupling between the second end section and the first end section, the sampling container screwed into the adapter can be moved from the sampling position into the transport position, in particular in the retracted position of the retractable retractable fitting.
  • the adapter internal thread provided by the adapter is therefore used on the one hand to screw the sampling container into the retractable fitting with the adapter, and on the other hand to adjust it to the transport position by first completely screwing in the sampling container via the sampling container external thread / adapter internal thread pair. Carrying out the same screwing movement of the fully screwed into the retractable fitting The mechanical coupling in the sampling container closes the opening.
  • a single pair of threads enables both the screwing in of the sampling container and the adjustment into the transport position.
  • the sampling container can thus be screwed in with the opening open, ie in the sampling position. It can then be screwed into the transport position for sampling.
  • the sampling container can then be screwed out of the adapter internal thread and thus out of the interchangeable fitting, with the elastically deformable locking element preventing a return to the sampling position.
  • the adapter and / or the sampling container has / have a securing element which is designed to secure the detachable connection between the adapter and the sampling container, and the securing element is designed such that the detachable connection between the adapter and the sampling container is only for can be solved in the event that the adapter is not inserted into the retractable fitting, in particular unscrewed from the retractable fitting.
  • the adapter external thread is matched to the retractable fitting internal thread in such a way that, by means of a screwing movement that can be transmitted via the second end section, the sampling container detachably or permanently connected to the adapter can be screwed into the retractable fitting internal thread via the adapter external thread, and that when the same screwing movement is continued by means of a mechanical coupling between the second end section and the first end section, the sampling container screwed into the retractable fitting together with the adapter can be moved from the sampling position to the transport position, in particular in the retracted position of the retractable retractable fitting.
  • the object is achieved by a method for sampling a fluid contained in a process container with a sampling system according to the invention, comprising the steps:
  • the method comprises at least the following step preceding the insertion of the sampling container into the lock fitting:
  • a retractable retractable fitting for an electrochemical sensor with an electrochemical sensor inserted therein is used as the lock fitting, the method comprising the following steps prior to the insertion of the sampling container into the lock fitting:
  • 1 a, b a sectional view of a first embodiment of the sampling container according to the invention
  • FIG. 3a A sectional view of an example from the prior art for a retractable fitting with an electrochemical sensor inserted therein;
  • 3b, c a sectional view of an embodiment of the sampling system according to the invention.
  • 1 a, b shows a sectional view of an embodiment of the transportable sampling container 1 according to the invention: In FIG. 1 a in a sampling position PS, in which an opening 3 leading into a sample chamber 4 and arranged at an end section 2 is open, and in FIG.
  • the transportable sampling container 1 is designed as a sampling probe.
  • the sampling container 1 has two mutually movably mounted components 6, 7 in order to enable adjustment between the transport position PS and the sampling position.
  • the first of the two components 6 is designed as a sleeve-shaped cylinder in which a sample chamber 4 is arranged.
  • a material for the sleeve-shaped cylinder with the sample chamber e.g. glass is suitable due to its high chemical resistance for a variety of different fluids.
  • the second of the two components 7 is designed as a plug which closes the sleeve-shaped cylinder 6.
  • the plug-shaped component 6 can also comprise sleeve-shaped sections, see, for example, FIGS. 2b, c.
  • An opening 3 is made in the sleeve-shaped first component 6. It goes without saying that a plurality of openings 3, for example on opposite sides of the first component, i.e.
  • At least two openings 3, can be introduced (see FIGS. 2a-c).
  • a fluid 22 (see FIG. 3 a) surrounding the first end section 2 can flow into the sample chamber 4 through the at least one opening 3.
  • the sample chamber 4 also has a displaceably mounted wall 41, by means of which the volume of the sample chamber 4 can be increased.
  • the sampling container 1 has at a second end section 8, which lies opposite the first end section 2 in the longitudinal direction of the sleeve-shaped first component 6, a pull-up element 19 which, like a syringe, is mechanically coupled to the wall 41 of the sample chamber 4 and in the lock fitting 5 used state can be operated by a user (see Fig. 3b).
  • a negative pressure can be generated with which the inflow of the fluid 22 into the sample chamber 4 is increased when this negative pressure is compensated.
  • the sample chamber 4 can optionally be depressurized by means of the mounting element 19.
  • the second component 7 is shifted in this embodiment in the longitudinal direction of the sleeve-shaped first component 6 (see dashed arrow).
  • the opening 3 is closed by the plug-shaped second component 7 in the sleeve-shaped first Component 6 moves, whereby the opening 3 is closed and the sample chamber 4 is sealed in a fluid-tight manner.
  • the sampling container 1 can be inserted into a lock fitting 5 (not shown here, see FIG. 3).
  • the sampling container 1 has a sampling container external thread 16 for this purpose, by means of which it can be screwed into a lock fitting 5. If the sampling container 1 is screwed into the fitting 5 in the sampling position PS, the screwing movement can then be carried out further for sampling without the sampling container 1 as a whole being shifted further in an axial movement in the direction of the fluid 22, for example by the sampling container 1 on a locking element of the interchangeable fitting (see FIG. 3b) hits (the sampling container 1 is then, so to speak, screwed onto a block).
  • the second component 7 is mechanically coupled to the end section 8 in such a way that when the screwing movement continues, the second component 7 is withdrawn in the direction of the first component 6. This triggers the relative movement of the two components 6, 7 to close the opening 3, and the sampling container 1 is brought into the transport position TS.
  • FIGS. 2a to 2e Further details of the first end section 2 are shown in a further embodiment of the sampling container 1 according to the invention in FIGS. 2a to 2e in a sectional view, with FIGS. 2a and 2b showing configurations of the sampling container in the sampling position PS and in FIGS. 2c to 2e in the transport position TS.
  • the sampling container 1 has two openings 3 here.
  • a spring element 25 mechanically coupled to the wall 41 of the sample chamber 4 is provided here (see FIGS. 2a, 2b). When the spring element 25 is tensioned, the wall 41 is displaced in the direction of the first end section 2.
  • a subsequent relaxation of the spring element 25 therefore leads to a displacement of the wall 41 in the direction of the second end section 8 and thus to an increase in the volume of the sample chamber 4 and that already mentioned above Oppressive
  • a variant not shown here comprising a magnetic switch, with which the displaceable wall 41 of the sample chamber 4 is moved in order to increase the volume of the sample chamber 4, functions.
  • the sampling container 1 may also have sealing elements 23 and / or 24.
  • the sealing elements 23 arranged here on an outer wall of the sampling container 1 serve the purpose that the sampling container, when inserted into the lock fitting 5, when the lock fitting 5 is retracted, seals the process container 21 (see FIG. 3 a) in a fluid-tight manner.
  • sealing elements 24 are also arranged between the two components 6, 7, which seal the sample chamber 4 in a fluid-tight manner, for example in the transport position TP of the sample-taking container 1, ie with the openings 3 closed.
  • the sampling container 1 also has an elastically deformable blocking element 10, which counteracts a movement of the two components 6, 7.
  • the locking element 10 is designed in such a way that when the second end section 8 is operated to move from the sampling position PS to the transport position TS with elastic deformation of the locking element 10, in this case the execution of the further screwing movement in which the second component 7 is withdrawn in the direction of the first component 6 (see transition from Fig. 2b to 2c).
  • the blocking element 10 blocks a return adjustment from the transport position TS into the sampling position PS, which is carried out by operating the second end section 8.
  • the blocking element 10 has, for example, the triangular profile shown here. This ensures that when the sampling container 1 is unscrewed from the lock fitting 5, the opening 3 is not reopened and the sampling container 1 remains in the transport position TS.
  • the material of the blocking element comprises, for example, an elastomer.
  • a filter unit 9 is also shown in FIGS. 2a, b. In one embodiment of the sampling container, this is arranged between the opening 3 and the sample chamber 4 and is designed to filter the sample after it has flown through the opening (s) and before it flows into the sample chamber 4.
  • the filter unit 9 can be exchanged if necessary.
  • the filter unit 9 is designed as a filter tube which is encompassed by the second component 7 and / or is connected to it.
  • the filter tube can be inserted between two sections of the second component 7.
  • the fluid flows into the filter tube via a wall of the filter tube, and is then passed through it into the sample chamber 4.
  • the filter unit 9 can be removed particularly easily from the first component 6, since the second component 7 is designed, for example, to be detachable from the first component 6 .
  • the simple removal facilitates cleaning of the filter unit 9 and / or an analysis of substances and / or particles received in the filter unit 9.
  • An exchange of the filter unit 9 that is required from time to time can also be carried out particularly easily.
  • it can optionally also have a closure 20, for example in the form of a closure cap, for the first end section 2, see FIG. 2c.
  • the second component 7 or at least a section of the second component 7 can be removed, in particular unscrewed, in one embodiment, in order to remove the sample from the transportable sample-taking container 1 after it has been transported.
  • the second component 7 has, for example, a securing element 26, for example a screw.
  • the sample can be subjected to further treatment and / or analysis in a special laboratory, for example.
  • the sampling container 1 can be moved back from the transport position TS to the sampling position PS outside the lock fitting 5.
  • Fig. 2d e further embodiments are shown, which represent alternative possibilities for taking the sample of the fluid 22 from the sampling container 1 after the sampling (i.e. outside the lock fitting 5).
  • the sample is removed from the sample chamber 4 in the transport position TS, i.e. with the opening (s) 3 always closed.
  • the second component 7 comprises a blocked fluid-tight access 27 to the sample chamber 4.
  • the fluid-tight access 27 is, for example, inserted into the threaded channel of the screw 26 already shown in FIGS. 2a-2c.
  • the access 27 is designed, for example, as a fluid-tight valve unit which is arranged in the threaded channel of the screw 26. In the case of the valve unit, there is thus a lockable and openable access 27.
  • the open thread of the screw 26 allows the valve unit access 27 to be opened with a rotating mechanism and the sample to be taken from the sample chamber 4
  • the access 27 is designed as an essentially fluid-impermeable membrane, for example a so-called septum.
  • This variant is particularly suitable for gaseous fluids, since otherwise if there is an opening - depending on the type of gas - it may escape uncontrollably from the sample chamber 4.
  • An "essentially gas-impermeable membrane” means here that the diffusion rate of the membrane for the gaseous fluid is sufficiently small that the gaseous fluid cannot diffuse out of the sample chamber 4 in the usual time scales of sampling (e.g. a maximum of 10% in one day. the amount of gas contained in the sample chamber 4).
  • a syringe is pierced through the membrane to expel the gaseous fluid from the sample chamber 4 for further treatment and / or analysis without damaging the membrane. Due to the possibility of inserting the syringe, the membrane (just like the valve unit before) also forms a reclosable access 27.
  • 3b, 3c show a sectional view of an embodiment of the sampling system 11 according to the invention, comprising a lock fitting 5 and a transportable sampling container 1.
  • FIG. 3a shows a lock fitting known from the prior art, which is designed as a manually or (semi-automatically, for example by means of pneumatics, axially movable interchangeable fitting for a probe-shaped electrochemical sensor 13)
  • the electrochemical sensor 13 can be moved by means of the lock fitting 5 in such a way that it is in direct contact with a fluid 22 surrounding the end section with a sensitive component arranged on its end section Lock fitting 5 screwed in.
  • the transportable sampling container 1 already described in the previous embodiments is inserted into the lock fitting 5 from FIG. 3a.
  • the electrochemical sensor 13 is removed (e.g. as part of a cleaning, calibration, verification and / or adjustment of the electrochemical sensor 13) and the sampling container 1 is inserted into the lock fitting 5 instead of the electrochemical sensor 13 in the position provided for the electrochemical sensor 13 .
  • the sampling container 1 is inserted into the lock fitting 5 in the sampling position PS, and then the lock fitting 5 is moved into the retracted position.
  • the first end section 2 of the sampling container 1 protrudes into the fluid 22 in such a way that it can flow into the sample chamber 4 in the sampling position PS, i.e. with the opening open (see Figs. 1a and 2a).
  • the inflow of the fluid 22 into the sample chamber 4 can be increased by means of a pull-up element 19.
  • the pull-up element is located on the second end section 8 opposite the first end section 2 in the longitudinal direction of the probe-shaped sampling container 1. This also protrudes from the lock fitting 5 in the retracted position and can therefore be operated by a user. After sampling, the adjustment from the sampling position PS to the transport position TS also takes place by operating the second end section 8 protruding from the lock fitting 5 in the retracted position.
  • a mechanical coupling between the end section 8 and one of the two movably mounted components 6, 7 (for example a fixed mechanical connection) the relative movement for closing the opening 3 can be triggered by a corresponding manipulation of the second end section 8.
  • the adjustment from the sampling position PS to the transport position TS is achieved in that when the sampling container 1 is further inserted into the retractable fitting 5, the second component 7 strikes a section of the retractable fitting 5 and thus in the direction of the first component 7 is moved back (see direction of the dashed arrows in Fig. 1a and 2b).
  • Lock fittings 5 that are locked in entry are often used. These can only be used in the event that the electrochemical sensor 13 or, alternatively, a probe suitable for the internal thread 14 of the exchangeable fitting, i.e. with a corresponding external thread, is screwed into the retractable fitting internal thread 14 provided for the electrochemical sensor 13.
  • an adapter 12 is used, which is included in the sampling system 11 and is matched to the lock fitting 5 or the corresponding electrochemical sensor 13.
  • the adapter 12 is arranged in FIG. 3b in the area marked by the dashed line, which is shown again in detail in FIG. 3c.
  • the adapter 12 is screwed into the retractable fitting internal thread 14 with an adapter external thread 15.
  • the adapter 12 is releasably connected to the sampling container 1 via a screw connection, in that a sampling container external thread 16 can be screwed into an adapter internal thread 17.
  • the adapter 12 can also be firmly connected to the sampling container 1.
  • the sampling container 1 is screwed into the adapter 12 already screwed into the lock fitting 5, or the sampling container 1 and adapter 12 are connected together as one (detachable or non-detachable) unit the lock fitting 5 screwed together.
  • the sampling container 1 and adapter 12 are already screwed together outside the lock fitting 5 and then screwed into the internal thread 14 of the interchangeable fitting as a screwed unit. It is advantageous if the relative movement for closing the opening 3 is triggered by continuing the screwing-in movement by which the sampling container 1 is screwed into the lock fitting 5.
  • an additional securing means 18 is provided with which the detachable connection between the sampling container 1 and the adapter 12 is secured. This prevents the sampling container 1 from being unscrewed from the adapter 12 when the lock fitting 5 is in the retracted position.
  • closure element 21 process container 22 fluid

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  • Life Sciences & Earth Sciences (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)
  • Hydrology & Water Resources (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

L'invention concerne un récipient de prélèvement d'échantillon transportable (1) destiné à prélever un échantillon d'un fluide (22) contenu dans un récipient de processus (21), ledit récipient de prélèvement d'échantillon étant réglable entre une position de prélèvement d'échantillon (PS) et une position de transport (TS). Dans la position de prélèvement d'échantillon (PS), au moins une ouverture (3) pouvant être fermée, qui est disposée au niveau d'une première section d'extrémité (2) du récipient de prélèvement d'échantillon (1) et qui débouche à l'intérieur du récipient de prélèvement d'échantillon (1), est ouverte et, dans la position de transport (TS), une chambre à échantillon (4), qui est disposée à l'intérieur, est fermée de manière étanche au fluide. Le récipient de prélèvement d'échantillon (1) peut être inséré dans un raccord de verrouillage (5) mobile. L'invention concerne en outre un système de prélèvement d'échantillon (11) comprenant le récipient de prélèvement d'échantillon (1) et un raccord de verrouillage (5), ainsi qu'un procédé de prélèvement d'un échantillon au moyen du système de prélèvement d'échantillon (11).
EP20824905.2A 2019-12-19 2020-12-09 Récipient de prélèvement d'échantillon transportable, système de prélèvement d'échantillon, et procédé de prélèvement d'un échantillon Pending EP4078133A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019135275.4A DE102019135275A1 (de) 2019-12-19 2019-12-19 Transportables Probennahmebehältnis, Probennahmesystem und Verfahren zur Probennahme
PCT/EP2020/085298 WO2021122229A1 (fr) 2019-12-19 2020-12-09 Récipient de prélèvement d'échantillon transportable, système de prélèvement d'échantillon, et procédé de prélèvement d'un échantillon

Publications (1)

Publication Number Publication Date
EP4078133A1 true EP4078133A1 (fr) 2022-10-26

Family

ID=73839027

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20824905.2A Pending EP4078133A1 (fr) 2019-12-19 2020-12-09 Récipient de prélèvement d'échantillon transportable, système de prélèvement d'échantillon, et procédé de prélèvement d'un échantillon

Country Status (5)

Country Link
US (1) US20230019192A1 (fr)
EP (1) EP4078133A1 (fr)
CN (1) CN114930144A (fr)
DE (1) DE102019135275A1 (fr)
WO (1) WO2021122229A1 (fr)

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DE19508354A1 (de) * 1995-03-09 1996-09-12 Schuth Horst Probeentnahmeventil
DE19720504B4 (de) * 1997-05-16 2005-07-07 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Vorrichtung zur Aufnahme und Halterung einer Messelektrode
DE10130283C1 (de) * 2001-06-26 2003-03-13 Bruker Biospin Gmbh NMR-Probenhalter und zugehörige Betriebsverfahren
DE102004055378B4 (de) * 2004-11-09 2008-11-27 Südmo Holding GmbH Probenentnahmevorrichtung sowie Probenaufnahmebehälter
DE102005049226B4 (de) * 2005-10-14 2007-08-02 Technische Universität München Probenahmesystem für fluide Proben
DE102005051279B4 (de) * 2005-10-26 2008-05-21 Endress + Hauser Conducta Gmbh + Co. Kg Armatur zur Aufnahme einer Messsonde
DE102006019242A1 (de) 2006-04-21 2007-10-25 Bayer Technology Services Gmbh Prozessanalysensystem mit steriler Probenahme von mechanisch empfindlichem Material aus einem Bioreaktor
DE102009029305A1 (de) 2009-09-09 2011-03-10 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Analysegerät zur automatisierten Bestimmung einer Messgröße einer Flüssigkeitsprobe
US9095850B2 (en) 2010-03-25 2015-08-04 Endress + Hauser Conducta Gesellschaft für Mess—und Regeltechnik mbH + Co. KG System for treating liquids
DE102011003615B4 (de) 2011-02-03 2024-06-06 Endress+Hauser Conducta Gmbh+Co. Kg Verfahren und Vorrichtung zur Messung eines Volumenstroms einer in einen Behälter einströmenden Flüssigkeit und/oder eines in den Behälter eingeströmten Volumens der Flüssigkeit
US8527900B2 (en) 2010-07-21 2013-09-03 Volkswagen Ag Motor vehicle
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Also Published As

Publication number Publication date
US20230019192A1 (en) 2023-01-19
DE102019135275A1 (de) 2021-06-24
WO2021122229A1 (fr) 2021-06-24
CN114930144A (zh) 2022-08-19

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