WO2007113668A2 - Device for the removal of liquid samples from the storage tank - Google Patents
Device for the removal of liquid samples from the storage tank Download PDFInfo
- Publication number
- WO2007113668A2 WO2007113668A2 PCT/IB2007/000902 IB2007000902W WO2007113668A2 WO 2007113668 A2 WO2007113668 A2 WO 2007113668A2 IB 2007000902 W IB2007000902 W IB 2007000902W WO 2007113668 A2 WO2007113668 A2 WO 2007113668A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- storage tank
- removal
- valve
- liquid
- samples
- Prior art date
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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
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/16—Devices for withdrawing samples in the liquid or fluent state with provision for intake at several levels
Definitions
- the invention relates to a device for taking liquid samples from a storage tank, in particular for taking petroleum and petroleum product samples to prove their properties.
- DE 11 69 851 A discloses a device for the safe removal of liquid samples from different levels of a storage tank.
- one or more suction tubes are provided, whose intake openings are height-adjustable or arranged in different planes. Their discharge openings end via a three-way cock in a withdrawal vessel, from which the liquid can be drained after switching the three-way cock.
- US 2,675,706 a device for taking liquid samples from a storage tank is known which has a manifold which is provided near the bottom of the storage tank with the manifold a number Sentern ⁇ ahmerohre are connected, the one side, that is open on the top, and the underside with the Manifold are connected.
- the sampling tubes form a unit which is pivotable with respect to the storage tank, so that their upper-side openings are each capable of removing a liquid sample from a defined plane of the storage tank.
- a device for taking liquid samples which consists of a sampling valve and vertical tubes whose lower ends protrude from Tankrä ⁇ dem and are connected via hahne to a manifold.
- a disadvantage of the known device is the difficulty of sampling, since it is necessary to manually discharge the products contained in the vertical tubes and subsequently to return them or to dispose of the liquid samples used as a sample to determine their properties and subsequently unusable.
- vacuum pump generally refers to a vacuum source with which a liquid is conveyed from a storage tank, preferably lifted can, such as a self-priming pump, such as a gear pump.
- the device shown in the figure for taking liquid samples from a storage tank 4 consists essentially of a removal valve 1, vertical tubes 2, which are mounted within the storage tank 4, the ends of which lead out of the storage tank 4 and connected via valves 3 to a manifold 5 are. Further, a vacuum pump 6 is provided, which is connected with its input side at the top of the manifold 5 and with its output side at the bottom of the bleed valve 1. The vacuum pump 6 is connected via a return valve 7 and a return pipe 8 at the lower part of the storage tank 4.
- All parts of the device for taking liquid samples from a storage tank 4, both those inside the storage tank 4 and those located outside the storage tank 4, are in accordance with current regulations for safe assembly and safe operation of the storage tank according to the characteristics carried out and mounted the stored product.
- the ends of the vertical tubes 2, which are referred to as upper ends and project into the storage tank, are arranged at different levels in the storage tank 4. Sampling of liquid products takes place at these levels, or these planes are provided for sampling.
- nozzles with openings mounted and fixed.
- the openings have a smaller diameter than the diameter of the vertical tubes.
- the length of the spigots and thus the length of the openings is determined by hydraulic calculation in relation to the uniform removal of the determined liquid product.
- the device for taking liquid samples from a storage tank 4 works as follows. Before sampling, all valves 3 or at least those connected to the tubes 2, the ends of which are located below the liquid level in the storage tank 4, are opened. The extraction valve 1 remains shut off. The return valve 7 is opened, the vacuum pump 6 is switched on. Part of the liquid is pumped from the vertical tubes 2 via the return pipe 8 into the lower part of the storage tank 4. The running time depends on the volume of the liquid in the vertical tubes 2 and 5 in the manifold. Thereafter, all the valves 3 are shut off, with the exception of one of the valves 3, from which the sample is needed.
- the vacuum pump 6 is turned off, the return valve 7 is also shut off.
- the removal valve 1 is opened, the vacuum pump 6 is switched on, and the necessary sample length of the liquid is removed from the vertical tube 2.
- the valve 3 of the operated pipe remains open. Subsequently, the vacuum pump 6 is turned off. The removal valve 1 and the previously opened valve 3 are shut off.
Abstract
A device is described for the removal of liquid samples from a storage tank (4), in particular for the removal of mineral oil samples and mineral oil-product samples, in order to verify their properties. The technical result which can be achieved with the invention is a simpler sample removal from the planes from which samples are to be removed and a greater correlation of the properties of each sample with the properties of the product at the corresponding plane of the sample removal. The technical result is achieved by the use of a vacuum pump (6) which is connected to a collecting pipe at the top, to a removal valve at the bottom and to the lower part of the storage tank via a return valve (7) and a return tubular connection piece (8).
Description
Einrichtung zur Entnahme von Flüssigkeitsproben aus dem VorratstankDevice for taking liquid samples from the storage tank
Die Erfindung betrifft eine Einrichtung zur Entnahme von Flüssigkeitsproben aus ei- nem Vorratstank, insbesondere zur Entnahme von Erdöl- und Erdölproduktproben, um deren Eigenschaften nachzuweisen.The invention relates to a device for taking liquid samples from a storage tank, in particular for taking petroleum and petroleum product samples to prove their properties.
Durch DE 11 69 851 A ist eine Einrichtung zur gefahrlosen Entnahme von Flüssigkeitsproben aus verschiedenen Ebenen eines Vorratstanks bekannt. Hierzu sind ein oder mehrere Saugrohre vorgesehen, deren Aπsaugöffnungen höhenverstellbar bzw. in verschiedenen Ebenen angeordnet sind. Deren Abgabeöffnungen enden über einen Dreiwegehahn in einem Entnahmegefäß, aus dem die Flüssigkeit nach Umstellen des Dreiwegehahns abgelassen werden kann.
Durch US 2,675,706 ist eine Einrichtung zur Entnahme von Flüssigkeitsproben aus einem Vorratstank bekannt, die eine Sammelleitung aufweist, die in Bodennähe des Vorratstanks vorgesehen ist Mit der Sammelleitung sind eine Anzahl Probenent- πahmerohre verbunden, die einseitig, d. h. oberseitig offen, und die unterseitig mit der Sammelleitung verbunden sind. Die Probenentnahmerohre bilden eine Einheit, die in Bezug auf den Vorratstank verschwenkbar ist, so dass ihre oberseitigen Öffnungen jeweils eine Flüssigkeitsprobe aus einer definierten Ebene des Vorratstanks zu entnehmen in der Lage sind.DE 11 69 851 A discloses a device for the safe removal of liquid samples from different levels of a storage tank. For this purpose, one or more suction tubes are provided, whose intake openings are height-adjustable or arranged in different planes. Their discharge openings end via a three-way cock in a withdrawal vessel, from which the liquid can be drained after switching the three-way cock. By US 2,675,706 a device for taking liquid samples from a storage tank is known which has a manifold which is provided near the bottom of the storage tank with the manifold a number Sentern πahmerohre are connected, the one side, that is open on the top, and the underside with the Manifold are connected. The sampling tubes form a unit which is pivotable with respect to the storage tank, so that their upper-side openings are each capable of removing a liquid sample from a defined plane of the storage tank.
Aus RU 2183317 ist eine Einrichtung zur Entnahme von Flüssigkeitsproben bekannt, die aus einem Entnahmeventil sowie vertikalen Rohren besteht, deren untere Enden aus Tankräπdem herausragen und über Hahne an ein Sammelrohr angeschlossen sind. Ein Nachteil der bekannten Einrichtung besteht in der Schwierigkeit der Probenentnahme, da es notwendig ist, das in den vertikalen Rohren enthaltene Produkte manuell herauszulassen und nachfolgend zurück zu befördern oder die als Probe zur Feststellung deren Eigenschaften verwendete und danach unbrauchbare Flüssig- keitsmeπge zu entsorgen.From RU 2183317 a device for taking liquid samples is known, which consists of a sampling valve and vertical tubes whose lower ends protrude from Tankräπdem and are connected via hahne to a manifold. A disadvantage of the known device is the difficulty of sampling, since it is necessary to manually discharge the products contained in the vertical tubes and subsequently to return them or to dispose of the liquid samples used as a sample to determine their properties and subsequently unusable.
Eine Aufgabe der Erfindung ist, eine Einrichtung zur Entnahme von Flüssigkeitspro- ben zu schaffen, die eine einfache Probenentnahme aus verschiedenen Ebenen eines Vorratstanks ermöglicht, wodurch ein hoher Übereinstimmungsgrad der Eigenschaften der entnehmbaren Flüssigkeitsproben mit den Eigenschaften der in dem Vorratstank enthaltenen Flüssigkeit innerhalb der entsprechenden Ebenen erreicht werden kann.It is an object of the invention to provide a liquid sample extraction apparatus which allows easy sampling from different levels of a storage tank, thereby providing a high degree of correspondence between the properties of the removable liquid samples and the properties of the liquid contained within the storage tank within the respective levels can be achieved.
Diese Aufgabe wird durch Merkmale des Anspruchs 1 gelöst.This object is solved by features of claim 1.
Der Begriff Vakuumpumpe bezeichnet hier allgemein eine Unterdruckquelle, mit der eine Flüssigkeit aus einem Vorratstank gefördert, vorzugsweise gehoben werden
kann, wie beispielsweise eine selbstansaugende Pumpe, wie etwa eine Zahnrad- purnpe.The term vacuum pump generally refers to a vacuum source with which a liquid is conveyed from a storage tank, preferably lifted can, such as a self-priming pump, such as a gear pump.
Ein Ausführungsbθispiθl der Erfindung ist in der Zeichnung schematisch dargestellt.An embodiment of the invention is shown schematically in the drawing.
Die in der Figur dargestellte Einrichtung zur Entnahme von Flüssigkeitsproben aus einem Vorratstank 4 besteht im Wesentlichen aus einem Entnahmeventil 1 , vertikalen Rohren 2, die innerhalb des Vorratstanks 4 montiert sind, deren Enden aus dem Vorratstank 4 herausführen und über Ventile 3 an ein Sammelrohr 5 angeschlossen sind. Ferner ist eine Vakuumpumpe 6 vorgesehen, die mit ihrer Eingangsseite oben an das Sammelrohr 5 und mit ihrer Ausgangsseite unten an das Entnahmeventil 1 angeschlossen ist. Die Vakuumpumpe 6 ist über ein Rücklaufventil 7 und einen Rücklaufstutzen 8 am unteren Teil des Vorratstanks 4 angeschlossen.The device shown in the figure for taking liquid samples from a storage tank 4 consists essentially of a removal valve 1, vertical tubes 2, which are mounted within the storage tank 4, the ends of which lead out of the storage tank 4 and connected via valves 3 to a manifold 5 are. Further, a vacuum pump 6 is provided, which is connected with its input side at the top of the manifold 5 and with its output side at the bottom of the bleed valve 1. The vacuum pump 6 is connected via a return valve 7 and a return pipe 8 at the lower part of the storage tank 4.
Alle Teile der Einrichtung zur Entnahme von Flüssigkeitsproben aus einem Vorratstank 4, sowohl diejenigen, die innerhalb des Vorratstanks 4, als auch diejenigen, die außerhalb des Vorratstanks 4 angeordnet sind, sind nach den geltenden Vorschriften für sichere Montage und sicheren Betrieb des Vorratstanks entsprechend den Eigenschaften des gelagerten Produktes ausgeführt und montiert.All parts of the device for taking liquid samples from a storage tank 4, both those inside the storage tank 4 and those located outside the storage tank 4, are in accordance with current regulations for safe assembly and safe operation of the storage tank according to the characteristics carried out and mounted the stored product.
Die als obere Enden bezeichneten, in den Vorratstank ragenden Enden der vertikalen Rohre 2 sind im Vorratstank 4 auf verschiedenen Ebenen angeordnet Auf diesen Ebenen findet eine Probenentnahme von flüssigen Produkten statt bzw. diese Ebenen sind für eine Probeentnahme vorgesehen.The ends of the vertical tubes 2, which are referred to as upper ends and project into the storage tank, are arranged at different levels in the storage tank 4. Sampling of liquid products takes place at these levels, or these planes are provided for sampling.
An den oberen Enden der vertikalen Rohre sind außer einem vertikalen Rohr für den oberen Punkt der Probenentnahme zusätzlich noch Stutzen mit Öffnungen montiert und befestigt. Die Öffnungen haben einen kleineren Durchmesser als der Durchmesser der vertikalen Rohre. Die Länge der Stutzen und somit die Länge der Öffnungen wird durch hydraulische Berechnung in Bezug auf die gleichmäßige Entnahme des
flüssigen Produkts bestimmt. Somit weist der Stutzen am senkrechten Rohr 2 für die tiefste Probeentnahmeebene die maximale Länge auf. Die Stutzenlänge am senkrechten Rohr 2 für die zweittiefste Probeentnahmeebene von oben ist minimal.At the upper ends of the vertical tubes, in addition to a vertical tube for the upper point of the sampling additionally nozzles with openings mounted and fixed. The openings have a smaller diameter than the diameter of the vertical tubes. The length of the spigots and thus the length of the openings is determined by hydraulic calculation in relation to the uniform removal of the determined liquid product. Thus, the nozzle on the vertical tube 2 for the deepest sampling plane on the maximum length. The nozzle length at the vertical tube 2 for the second deepest sampling plane from above is minimal.
Die Einrichtung zur Entnahme von Flüssigkeitsproben aus einem Vorratstank 4 funktioniert wie folgt. Vor der Probenentnahme werden alle Ventile 3 oder mindestens diejenigen, die an die Rohre 2 angeschlossen sind, deren Enden sich unter dem Flüssigkeitsstand im Vorratstank 4 befinden, geöffnet. Das Entnahmeventil 1 bleibt abgesperrt. Das Rücklaufventil 7 wird geöffnet, die Vakuumpumpe 6 wird eingeschal- tet. Ein Teil der Flüssigkeit wird aus den vertikalen Rohren 2 über den Rücklaufstutzen 8 in das untere Teil des Vorratstanks 4 gepumpt. Die Laufzeit hängt von dem Volumen der Flüssigkeit in den vertikalen Rohren 2 und im Sammelrohr 5 ab. Danach werden alle Ventile 3 abgesperrt, mit der Ausnahme eines der Ventile 3, woraus die Probe benötigt wird. Nachdem das Sammelrohr 5 mit der Flüssigkeit aus dem vertikalen Rohr 2 gefüllt ist, wird das vorher geöffnete Ventil 3 abgesperrt, die Vakuumpumpe 6 wird ausgeschaltet, das Rücklaufventil 7 wird auch abgesperrt. Es wird das Entnahmeventil 1 geöffnet, die Vakuumpumpe 6 eingeschaltet, und die notwendige Probenmeπge der Flüssigkeit aus dem vertikalen Rohr 2 entnommen. Das Ventil 3 des betätigten Rohres bleibt geöffnet. Anschließend wird die Vakuumpumpe 6 ausgeschaltet. Das Entnahmeventil 1 und das vorher geöffnete Ventil 3 werden abgesperrt.The device for taking liquid samples from a storage tank 4 works as follows. Before sampling, all valves 3 or at least those connected to the tubes 2, the ends of which are located below the liquid level in the storage tank 4, are opened. The extraction valve 1 remains shut off. The return valve 7 is opened, the vacuum pump 6 is switched on. Part of the liquid is pumped from the vertical tubes 2 via the return pipe 8 into the lower part of the storage tank 4. The running time depends on the volume of the liquid in the vertical tubes 2 and 5 in the manifold. Thereafter, all the valves 3 are shut off, with the exception of one of the valves 3, from which the sample is needed. After the manifold 5 is filled with the liquid from the vertical tube 2, the previously opened valve 3 is shut off, the vacuum pump 6 is turned off, the return valve 7 is also shut off. The removal valve 1 is opened, the vacuum pump 6 is switched on, and the necessary sample length of the liquid is removed from the vertical tube 2. The valve 3 of the operated pipe remains open. Subsequently, the vacuum pump 6 is turned off. The removal valve 1 and the previously opened valve 3 are shut off.
Wenn eine Probe von der anderen Ebene des Fiüssigkeitsstandes benötigt wird, werden das entsprechende Ventil 3 und das Ventil 7 geöffnet, die Vakuumpumpe 6 wird wieder eingeschaltet. Nach dem Ablauf der Zeit, die für das Pumpen der Flüssigkeit aus dem Sammelrohr 5 in den Vorratstank 4 über den Rücklaufstutzen 8 notwendig ist, wird die Vakuumpumpe 6 ausgeschaltet Das Rücklaufventil 7 wird abgesperrt. Das Eπtnahmeventil 1 wird geöffnet, die Vakuumpumpe 6 wird eingeschaltet, und die benötigte Probenmenge der Flüssigkeit wird entnommen.
Durch die auf den vertikalen Rohren 2 angeordneten Stutzen mit Öffnungen, die unterschiedliche Länge auf verschiedenen Ebenen haben, fließt die gleiche Menge an Flüssigkeit von jeder Ebene über das Entnahrneventil 1. Dadurch lässt sich die Zusammensetzung einer so genannten Durchschnittsprobe bestimmen, die der Zu- sammensetzung der Flüssigkeit im Vorratstank 4 entspricht.When a sample from the other level of the liquid level is needed, the corresponding valve 3 and the valve 7 are opened, the vacuum pump 6 is turned on again. After the expiry of the time necessary for pumping the liquid from the collecting pipe 5 into the storage tank 4 via the return pipe 8, the vacuum pump 6 is switched off. The return valve 7 is shut off. The Eπtnahmeventil 1 is opened, the vacuum pump 6 is turned on, and the required amount of sample of the liquid is removed. By means of the nozzles arranged on the vertical pipes 2 with openings having different lengths at different levels, the same amount of liquid flows from each level via the Entnahrneventil 1. This makes it possible to determine the composition of a so-called average sample, the composition the liquid in the storage tank 4 corresponds.
Die Anwendung einer Vakuumpumpe 6, die über das Rücklaufventil 7 und den Rücklaufstutzen 8 an das untere Teil des Vorratstanks 4 angeschlossen wird, erlaubt Proben zu erhalten, die exakt die Eigenschaften des flüssigen Produktes auf der ent- sprechenden Ebene im Vorratstaπk 4 wiedergeben, d. h. ohne Beimischung von Flüssigkeitsresten von den anderen Ebenen im Vorratstank 4.
The application of a vacuum pump 6, which is connected via the return valve 7 and the return pipe 8 to the lower part of the storage tank 4, allows to obtain samples which exactly reproduce the properties of the liquid product at the corresponding level in the storage tank 4, i. H. without admixture of liquid residues from the other levels in the storage tank 4th
Claims
1. Einrichtung zur Entnahme von Flüssigkeitsproben aus einem Vorratstaπk (4) mit einem Entnahmeventil (1), vertikalen Rohren (2), die innerhalb des Vorratstanks (2) angeordnet sind, deren untere Enden aus dem Vorratstank (4) führen und durch Ventile (3) an ein Sammelrohr (5) angeschlossen sind, gekennzeichnet durch eine Vakuumpumpe (6), die oben an das Sammelrohr (5), unten an das Entnahmeventil (1) und über ein Rücklaufventil (7) und einen Rücklaufstut- zen (8) an einen unteren Teil des Vorratstanks (4) angeschlossen ist.1. Device for taking liquid samples from a storage station (4) with a removal valve (1), vertical tubes (2) which are arranged inside the storage tank (2), whose lower ends lead from the storage tank (4) and through valves (4). 3) are connected to a manifold (5), characterized by a vacuum pump (6) at the top of the manifold (5), at the bottom of the sampling valve (1) and via a return valve (7) and a Rücklaufstut- zen (8) is connected to a lower part of the storage tank (4).
2. Einrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die oberen Enden der vertikalen Rohre (2) im Vorratstank (4) inner- halb derjenigen Ebenen angeordnet sind, die zu einer Probenentnahme von flüssigen Produkten aus dem Vorratstank vorgesehen sind.2. Device according to claim 1, characterized in that the upper ends of the vertical tubes (2) in the storage tank (4) within those levels are arranged, which are provided for sampling of liquid products from the storage tank.
3. Einrichtung nach Anspruch 1 oder 2 dadurch gekennzeichnet, dass mit Ausnahme des vertikalen Rohrs (2), das für eine Probenentnahme aus der obersten Ebene vorgesehen ist, an den oberen Enden der vertikalen Rohre (2) zusätzlich noch Stutzen mit an die Länge der jeweiligen vertikalen Rohre (2) angepassten, den Volumenstrom in allen vertikalen Rohren (2) auf ein gleiches Maß begrenzenden Öffnungen montiert und befestigt sind. 3. Device according to claim 1 or 2, characterized in that with the exception of the vertical tube (2), which is provided for sampling from the top level, at the upper ends of the vertical tubes (2) additionally still with to the length of the adapted to respective vertical tubes (2), the volume flow in all vertical tubes (2) are limited to an equal extent defining openings and fixed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2006110965/22 | 2006-04-04 | ||
| RU2006110965 | 2006-04-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2007113668A2 true WO2007113668A2 (en) | 2007-10-11 |
| WO2007113668A3 WO2007113668A3 (en) | 2008-02-14 |
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ID=38473400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2007/000902 WO2007113668A2 (en) | 2006-04-04 | 2007-04-04 | Device for the removal of liquid samples from the storage tank |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2007113668A2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081016A (en) * | 2011-02-21 | 2011-06-01 | 中国石油化工股份有限公司 | Method for multistage sampling of floating-roof oil tank |
| CN102410943A (en) * | 2011-07-21 | 2012-04-11 | 赵勇纲 | Cluster type fluid sampling device |
| CN105823656A (en) * | 2016-04-29 | 2016-08-03 | 宁夏路桥工程股份有限公司 | Three-position sampling device installed on pitch storage tank |
| EP3396351A1 (en) * | 2017-04-26 | 2018-10-31 | Furio Travegli | Device, system and method for directly sampling a liquid of a tank |
| WO2020167328A1 (en) * | 2019-02-15 | 2020-08-20 | Saudi Arabian Oil Company | Fluid evaluation devices for oil and gas applications |
| CN113702531A (en) * | 2021-08-28 | 2021-11-26 | 江西中医药大学 | Online monitoring method and device for traditional Chinese medicine extraction process endpoint |
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|---|---|---|---|---|
| DE1169851B (en) * | 1963-05-09 | 1964-05-06 | Wilke Werke Ag | Device for the safe removal of liquid samples from different layer heights of a storage container |
| GB1178108A (en) * | 1966-10-18 | 1970-01-21 | Whessoe Ltd | Taking of Liquid Samples from a Storage Tank |
| GB2106865A (en) * | 1981-08-05 | 1983-04-20 | Jones Richard W | Apparatus and method for sampling a liquid |
| DE19758356A1 (en) * | 1997-12-22 | 1999-07-08 | Ufz Leipzighalle Gmbh | Modular multi-channel sampling and measuring system for automatic long-term analysis of fluids for hydrogeological field and laboratory tests |
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2007
- 2007-04-04 WO PCT/IB2007/000902 patent/WO2007113668A2/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1169851B (en) * | 1963-05-09 | 1964-05-06 | Wilke Werke Ag | Device for the safe removal of liquid samples from different layer heights of a storage container |
| GB1178108A (en) * | 1966-10-18 | 1970-01-21 | Whessoe Ltd | Taking of Liquid Samples from a Storage Tank |
| GB2106865A (en) * | 1981-08-05 | 1983-04-20 | Jones Richard W | Apparatus and method for sampling a liquid |
| DE19758356A1 (en) * | 1997-12-22 | 1999-07-08 | Ufz Leipzighalle Gmbh | Modular multi-channel sampling and measuring system for automatic long-term analysis of fluids for hydrogeological field and laboratory tests |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081016A (en) * | 2011-02-21 | 2011-06-01 | 中国石油化工股份有限公司 | Method for multistage sampling of floating-roof oil tank |
| CN102410943A (en) * | 2011-07-21 | 2012-04-11 | 赵勇纲 | Cluster type fluid sampling device |
| CN105823656A (en) * | 2016-04-29 | 2016-08-03 | 宁夏路桥工程股份有限公司 | Three-position sampling device installed on pitch storage tank |
| EP3396351A1 (en) * | 2017-04-26 | 2018-10-31 | Furio Travegli | Device, system and method for directly sampling a liquid of a tank |
| WO2018197040A1 (en) * | 2017-04-26 | 2018-11-01 | Furio Travagli | Device, system and method for direct sampling a liquid of a tank |
| WO2020167328A1 (en) * | 2019-02-15 | 2020-08-20 | Saudi Arabian Oil Company | Fluid evaluation devices for oil and gas applications |
| US10760935B1 (en) | 2019-02-15 | 2020-09-01 | Saudi Arabian Oil Company | Fluid evaluation devices for oil and gas applications |
| CN113702531A (en) * | 2021-08-28 | 2021-11-26 | 江西中医药大学 | Online monitoring method and device for traditional Chinese medicine extraction process endpoint |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007113668A3 (en) | 2008-02-14 |
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