CN112729935B - Material liquid sampling device and automatic material liquid sampling and conveying system - Google Patents
Material liquid sampling device and automatic material liquid sampling and conveying system Download PDFInfo
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- CN112729935B CN112729935B CN202011346927.2A CN202011346927A CN112729935B CN 112729935 B CN112729935 B CN 112729935B CN 202011346927 A CN202011346927 A CN 202011346927A CN 112729935 B CN112729935 B CN 112729935B
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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
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/02—Collecting means for receiving or storing samples to be investigated and possibly directly transporting the samples to the measuring arrangement; particularly for investigating radioactive fluids
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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
- G01N2001/002—Devices for supplying or distributing samples to an analysing apparatus
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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
- G01N2001/1031—Sampling from special places
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Abstract
The invention discloses a material liquid sampling device, which comprises a vacuum lifting unit, a sampling unit and an air lifting unit, wherein the sampling unit comprises a sampling container, the vacuum lifting unit comprises a lifting pipe, one end of the lifting pipe is communicated with the sampling container, the other end of the lifting pipe stretches into the lower part of the liquid level of a storage tank, and a small hole is arranged on the side wall of one end, close to the storage tank, of the lifting pipe; the air-lift liquid unit comprises an air inlet pipe and an air regulating cover, one end of the air inlet pipe is connected with the lifting pipe through a small hole and is used for conveying air into the lifting pipe when the small hole is in a submerged state so as to lift the liquid in the storage tank to the sampling container; the air regulating cover is connected with the other end of the air inlet pipe and is used for regulating the flow of air in the air inlet pipe. The invention also discloses a feed liquid automatic sampling and delivering system comprising the feed liquid sampling device. The radioactive feed liquid sampling device can directly sample feed liquid of which the sampling container is close to the storage tank, and is simple in structure and convenient to operate.
Description
Technical Field
The invention particularly relates to a material liquid sampling device and an automatic material liquid sampling and conveying system comprising the same.
Background
The nuclear fuel post-treatment plant is used for carrying out processes such as dissolution, extraction, back extraction, washing and the like on spent fuel generated by a nuclear power station, extracting useful elements such as uranium, plutonium, neptunium and the like, preparing corresponding products, and applying the products to the fields of aerospace, ocean, military and the like. In order to meet the requirements of process control, nuclear material balance, product inspection, critical safety control and the like, radioactive feed liquid at different points in the process is required to be sampled, and chemical components, radioactivity, elements, nuclides, physical properties and the like in the feed liquid are analyzed so as to ensure the safe, stable and effective operation of the process and obtain qualified products such as uranium, plutonium, neptunium and the like. In the process flow, the radioactive sampling points are more, the sampling frequency is high, the radioactive concentration of the material is high, personnel can be irreversibly irradiated when in direct contact, and even the lethal dose can be reached.
In the prior art, compressed air is often adopted to lift the feed liquid, the pressure and the flow are relatively large, the pressure and the flow are not applicable to the working condition that the distance between a sampled storage tank and a sampling device is relatively short, and the risk that radioactive feed liquid is sprayed out of a sampling needle and flows into a sampling exhaust pipe is easily caused.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and provides a material liquid sampling device and an automatic material liquid sampling and delivering system comprising the same, wherein the material liquid sampling device can directly sample material liquid of which the sampling container is close to a storage tank, and the device is simple in structure and convenient to operate.
In order to solve the technical problems, the invention adopts the following technical scheme:
a material liquid sampling device comprises a vacuum lifting unit, a sampling unit and an air lifting unit,
the sampling unit comprises a sampling vessel which,
the vacuum lifting unit comprises a lifting pipe, one end of the lifting pipe is communicated with the sampling container, the other end of the lifting pipe stretches into the position below the liquid level of the storage tank, and a small hole is formed in the side wall of one end, close to the storage tank, of the lifting pipe;
the air-to-liquid unit comprises an air inlet pipe and an air regulating cover,
one end of the air inlet pipe is connected with the lifting pipe through the small hole and is used for conveying air into the lifting pipe when the small hole is in a submerged state so as to lift the feed liquid in the storage tank to the sampling container;
the air regulating cover is connected with the other end of the air inlet pipe and used for regulating the flow of air in the air inlet pipe.
Preferably, the air regulating cover comprises an upper valve plate and a lower valve plate, the upper valve plate is overlapped on the lower valve plate, a first opening is formed in the lower valve plate, a plurality of second openings are formed in the upper valve plate, the diameters of the second openings are different, and the diameters of the second openings are smaller than those of the first openings;
the upper valve plate is rotated on the lower valve plate, a plurality of second openings can be respectively corresponding to the first openings, and then air enters into the air inlet pipe through the second openings on the upper valve plate and the first openings on the lower valve plate.
Preferably, the plurality of second openings are circumferentially distributed on the upper valve plate, and the diameters thereof are sequentially decreased in a clockwise/counterclockwise direction.
Preferably, the feed liquid sampling device further comprises a reflux unit, the reflux unit comprises an upper reflux pipe, an intermediate container, a lower reflux pipe and a gas-liquid separation assembly,
the two ends of the upper return pipe are respectively communicated with the sampling container and the middle container and are used for enabling feed liquid in the sampling container to return to the middle container;
one end of the lower return pipe is communicated with the intermediate container, and the other end of the lower return pipe extends below the liquid level of the storage tank and is used for returning feed liquid in the intermediate container to the storage tank;
the air-liquid separation assembly comprises a pressure hollow pipe, a pressure hollow injector and a vacuum suction pipe, wherein the pressure hollow pipe is sequentially connected with the pressure hollow injector, the vacuum suction pipe and an intermediate container, and the pressure hollow pipe is used for inputting compressed air into the pressure hollow injector so as to enable the intermediate container to be in a vacuum state, and the feed liquid in the storage tank is enabled to rise so as to submerge small holes on the lifting pipe.
Preferably, the intermediate container is higher than the feed liquid vacuum pumped by the riser through the pressure air ejector.
Preferably, the intermediate container is an elongated conical container.
Preferably, the pressure of the compressed air is 0.6MPa.
Preferably, the sampling unit further comprises a sampling needle and a vacuum sampling bottle,
the bottom of the sampling needle is communicated with the sampling container, the input port of the upper return pipe is higher than the bottom of the sampling container, the input port of the sampling needle is positioned between the bottom of the sampling container and the input port of the upper return pipe,
the top end of the sampling needle can be inserted into the vacuum sampling bottle so that the vacuum sampling bottle can collect feed liquid outside the sampling container.
The invention also provides an automatic sampling and delivering system for the material liquid, which comprises automatic sampling and delivering equipment and the material liquid sampling device, wherein the automatic sampling and delivering equipment is used for automatically delivering the material liquid extracted from the storage tank through the material liquid sampling device into the analysis system.
Preferably, the feed solution is a radioactive feed solution.
According to the feed liquid sampling device, the air adjusting cover is arranged to control the flow of air, so that feed liquid which is close to the storage tank in the sampling container can be directly sampled, the air adjusting cover is arranged to adjust the air inflow, the problem that feed liquid is sprayed out of the sampling needle and flees into the sampling exhaust pipe due to overlarge air inflow is avoided, and meanwhile, the problem that the feed liquid cannot be lifted due to overlarge air inflow is also avoided. In addition, the feed liquid sampling device has wide application range, and can be applied to sampling of all radioactive feed liquid systems and sampling of other feed liquids which are toxic and harmful and cannot be in direct contact.
By adopting the feed liquid sampling device, the feed liquid automatic sampling and sample feeding system can realize automatic sampling and sample feeding of feed liquid, can also realize automatic sampling and sample feeding of radioactive feed liquid, and reduces radiation of the radioactive feed liquid to operators.
Drawings
FIG. 1 is a schematic diagram of a sampling device according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of an upper valve plate according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a lower valve plate in an embodiment of the invention.
In the figure: 1-a storage tank; 2-a riser; 3-an air inlet pipe; 4-an air regulating cover; 5-sampling needle; 6-a sampling container; 7-upper return pipe; 8-vacuum suction tube; 9-an intermediate container; 10-lower return pipe; 11-pressing the hollow pipe; 12-pressure air ejector; 13-an exhaust pipe; 14-upper valve plate; 15-lower valve plate.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent, and the embodiments described in detail, but not necessarily all, in connection with the accompanying drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be noted that the orientation or positional relationship indicated by "upper" or the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience and simplicity of description, and is not meant to indicate or imply that the apparatus or element to be referred to must be provided with a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "configured," "mounted," "secured," and the like are to be construed broadly and may be, for example, fixedly connected or detachably connected or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood by those skilled in the art in specific cases.
The invention provides a material liquid sampling device, which comprises a vacuum lifting unit, a sampling unit and an air liquid lifting unit,
the sampling unit comprises a sampling vessel which,
the vacuum lifting unit comprises a lifting pipe, one end of the lifting pipe is communicated with the sampling container, the other end of the lifting pipe stretches into the position below the liquid level of the storage tank, and a small hole is formed in the side wall of one end, close to the storage tank, of the lifting pipe;
the air-to-liquid unit comprises an air inlet pipe and an air regulating cover,
one end of the air inlet pipe is connected with the lifting pipe through the small hole and is used for conveying air into the lifting pipe when the small hole is in a submerged state so as to lift the feed liquid in the storage tank to the sampling container;
the air regulating cover is connected with the other end of the air inlet pipe and used for regulating the flow of air in the air inlet pipe.
The invention also provides an automatic sampling and delivering system for the material liquid, which comprises automatic sampling and delivering equipment and the material liquid sampling device, wherein the automatic sampling and delivering equipment is used for automatically delivering the material liquid extracted from the storage tank by the material liquid sampling device into an analysis system.
Example 1:
the embodiment discloses a material liquid sampling device, which comprises a vacuum lifting unit, a sampling unit and an air liquid lifting unit as shown in fig. 1.
The sampling unit comprises a sampling container 6, the vacuum lifting unit comprises a lifting pipe 2, one end of the lifting pipe 2 is communicated with the sampling container 6, the other end of the lifting pipe extends below the liquid level of the storage tank 1, and a small hole is formed in the side wall of one end, close to the storage tank 1, of the lifting pipe 2.
The air-lift liquid unit comprises an air inlet pipe 3 and an air regulating cover 4, one end of the air inlet pipe 3 is connected with the lifting pipe 2 through a small hole, and the air inlet pipe 3 is used for conveying air into the lifting pipe 2 when the small hole is in a submerged state so as to lift the liquid in the storage tank 1 to the sampling container 6. The air regulating cover 4 is connected with the other end of the air inlet pipe 3 and is used for regulating the flow of air in the air inlet pipe 3.
The feed liquid sampling device of this embodiment is through setting up the flow of air in the feed liquid of air regulating lid 4 control, can directly sample the feed liquid that sampling container 6 is nearer to storage tank 1, and through air regulating lid 4 air inflow, can avoid the too big radioactive feed liquid of causing from the sample needle blowout and scurrying into the sample blast pipe, also can avoid simultaneously because of the too little problem that causes of feed liquid can't promote of air inflow.
In this embodiment, as shown in fig. 2 and 3, the air regulating cover 4 includes an upper valve plate 14 and a lower valve plate 15, the upper valve plate 14 is stacked on the lower valve plate 15, a first opening is provided on the lower valve plate 15, a plurality of second openings are provided on the upper valve plate 14, and the diameters of the plurality of second openings are different and smaller than the diameter of the first opening. The rotation of the upper valve plate 14 on the lower valve plate 15 can make one of the plurality of second openings correspond to the first opening, and because the air above the upper valve plate 14 can only enter the air inlet pipe 3 through the second opening of the upper valve plate 14 and the first opening of the lower valve plate 15, the air inlet amount of the air entering the air inlet pipe 3 is adjusted by changing the aperture of the air passing through the second opening of the upper valve plate 14 by rotating the upper valve plate 14, and the air inlet amount of the air is increased or decreased, so that the liquid sampling device reaches an optimal working state. Specifically, the liquid sampling device can adjust the diameter of the second opening by rotating the upper valve plate 14 according to the level of the liquid in the storage tank 1, so as to adjust the flow of air entering the air inlet pipe 3, and the application range of the liquid sampling device is wider.
The second openings are distributed on the upper valve plate 14 along the circumferential direction, and the diameters thereof sequentially decrease along the clockwise/counterclockwise direction, in this embodiment, the number of the second openings of the upper valve plate is 3, the diameters of the 3 second openings are all different, and the diameters of the second openings are determined according to practical requirements. In addition, the upper valve plate 14 can be rotated to close the air inlet of the air regulating cover 4, namely, the upper valve plate 14 is rotated to a position between two adjacent second open holes or other positions without openings, and the positions correspond to the first small holes of the lower valve plate 15.
In this embodiment, the diameter range of the first opening is 3-4mm, and the first opening in this range can make the gas of second opening accessible get into, also can avoid because the too big two valve plates of leading to of first opening diameter are difficult for the butt joint installation, and the diameter range of second opening is 1-2.5mm, and the second opening in this range can guarantee suitable tolerance range.
Specifically, in the same tank 1, in the working condition that the liquid level of the feed liquid in the tank 1 is low, the required air intake amount is large, so that the second opening with large diameter on the upper valve plate 14 can be rotated to a position corresponding to the first opening on the lower valve plate 15. On the contrary, in the working condition that the liquid level of the feed liquid in the storage tank 1 is high, the required air inflow is small, so that the second opening with small diameter on the upper valve plate 14 can be rotated to a position corresponding to the first opening on the lower valve plate 15.
In this embodiment, the liquid sampling device further includes a reflux unit including an upper reflux pipe 7, an intermediate tank 9, a lower reflux pipe 10, and a gas-liquid separation assembly.
The two ends of the upper return pipe 7 are respectively communicated with the sampling container 6 and the middle container 9 and are used for returning the feed liquid in the sampling container 6 to the middle container 9; the lower return pipe 10 is connected at both ends to the intermediate tank 9 and the sump 1, respectively, for returning the feed liquid in the intermediate tank 8 to the sump 1.
The air-liquid separation assembly comprises a pressure hollow pipe 11, a vacuum suction pipe 8 and a pressure hollow ejector 12, wherein the pressure hollow pipe 11 is sequentially connected with the pressure hollow ejector 12, the vacuum suction pipe 8 and the intermediate container 9, and the pressure hollow pipe 11 is used for inputting compressed air into the pressure hollow ejector 12 so as to enable the intermediate container 9 to be in a vacuum state and enable the feed liquid in the storage tank 1 to rise so as to submerge small holes in the lifting pipe 2. In this example, the pressure of the compressed air was 0.6MPa.
Wherein the height of the intermediate container 9 is higher than the height of the liquid material that the riser pipe 2 vacuum sucks through the air ejector, so as to avoid the problem that the gas-liquid separation cannot be realized due to the too low position of the intermediate container 9, and the liquid material can be prevented from being sucked into the vacuum suction pipe 8 and the exhaust pipe 13.
In this embodiment, the middle container 9 is an elongated conical container, so that gas-liquid separation can be fully realized.
Specifically, compressed air (air) of 0.6MPa enters the air ejector 12 through the air pipe 11 to make the intermediate container 9 in a vacuum state, at this time, the feed liquid rises from the storage tank 1 to the riser pipe 2 and the lower return pipe 10, the small hole at the joint of the riser pipe 2 and the air inlet pipe 3 is in a submerged state, the air enters the air inlet pipe 3 through a certain second opening (the diameter of which is selected according to the actual working condition) on the upper valve plate 14 in the air regulating cover 4 and a first small hole on the lower valve plate 15, then enters the riser pipe 2, the gas-liquid mixture is lifted into the sampling container 6 through the riser pipe 2 under the action of the air flow, then flows back to the intermediate container 9 through the upper return pipe 7, gas-liquid separation is realized in the intermediate container 9, the air is pumped out by the air ejector 12, the feed liquid is discharged through the air outlet pipe 13, then returns back to the storage tank 1 again through the lower return pipe 10, and the feed liquid stored in the sampling container 6 is representative after a period of circulation, and automatic sampling of the feed liquid can be completed.
In this embodiment, the upper valve plate 14 of the air regulating cover 4 is provided with three second openings with different diameters, and the air intake is regulated by rotating the upper valve plate 14 by rotating the air regulating cover 4, so as to complete the regulation of the sampling operation.
In this embodiment, the sampling unit still includes sampling needle 5 and vacuum sampling bottle, and sampling needle 5's bottom and sampling container 6 intercommunication, and the position of the input port of upper return pipe 7 is higher than sampling container 6's bottom, and sampling needle 5's position of input port is located between sampling container 6 bottom and upper return pipe 7's the input port, and sampling needle 5's top can insert in the vacuum sampling bottle to make the vacuum sampling bottle collect the feed liquid outside sampling container 6. Specifically, the sample bottle which is vacuumized is reversely inserted on the sampling needle 5, so that representative process feed liquid enters the sample bottle, and the whole sampling operation is completed.
The feed liquid sampling device of this embodiment comes the flow of air in the control riser through setting up the gas regulating cap, can directly take a sample the feed liquid that the sampling container is nearer to the storage tank, and be provided with the gas regulating cap and adjust the air input, avoid the too big radioactive feed liquid of causing from the sample needle blowout and scurrying into the sample blast pipe, the feed liquid that also can avoid the too little air input to cause simultaneously can't promote the problem, the feed liquid sampling device of this embodiment can also adjust the air input of gas regulating cap according to the height of the feed liquid level of storage tank, through increase or reduction air input, make feed liquid sampling device reach an optimal operating condition. The feed liquid sampling device is simple in structure, safe and reliable and does not need maintenance. In addition, the feed liquid sampling device of this embodiment application scope is wide, not only can be applied to the sample of all radioactive feed liquids, can be applied to the sample of other feed liquids that poisonous and harmful can not direct contact moreover.
Example 2:
the embodiment discloses automatic sampling and sending system of feed liquid, including automatic sampling equipment, still include the feed liquid sampling device in embodiment 1, automatic sampling equipment is arranged in sending the feed liquid that feed liquid sampling device draws from the storage tank to analytic system automatically. In this embodiment, the feed solution may be a radioactive feed solution.
The automatic sampling and sample feeding system for the feed liquid can realize automatic sampling and sample feeding of the feed liquid by adopting the feed liquid sampling device, can also realize automatic sampling and sample feeding of the radioactive feed liquid, and reduces radiation of the radioactive feed liquid to operators.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (6)
1. A material liquid sampling device is characterized by comprising a vacuum lifting unit, a sampling unit and an air liquid lifting unit,
the sampling unit comprises a sampling container (6),
the vacuum lifting unit comprises a lifting pipe (2), one end of the lifting pipe is communicated with the sampling container, the other end of the lifting pipe stretches into the position below the liquid level of the storage tank, and a small hole is formed in the side wall of one end, close to the storage tank, of the lifting pipe;
the sampling container is arranged at the top of the lifting pipe;
the air-to-liquid unit comprises an air inlet pipe and an air regulating cover,
the air inlet pipe is arranged in parallel with the lifting pipe, one end of the air inlet pipe is connected with the lifting pipe through the small hole and is used for conveying air into the lifting pipe when the small hole is in a submerged state so as to enable feed liquid in the storage tank to be lifted to the sampling container;
the air regulating cover is connected with the other end of the air inlet pipe and used for regulating the flow of air in the air inlet pipe; the air regulating cover is arranged near the sampling container and is positioned at the same height as the sampling container;
the feed liquid sampling device also comprises a reflux unit, the reflux unit comprises an upper reflux pipe (7), an intermediate container (9), a lower reflux pipe (10) and a gas-liquid separation assembly,
the two ends of the upper return pipe are respectively communicated with the sampling container and the middle container and are used for enabling feed liquid in the sampling container to return to the middle container;
one end of the lower return pipe is communicated with the intermediate container, and the other end of the lower return pipe extends below the liquid level of the storage tank and is used for returning feed liquid in the intermediate container to the storage tank;
the air-liquid separation assembly comprises a pressure air pipe (11), a pressure air ejector (12) and a vacuum suction pipe (8), and an exhaust pipe (13), wherein the pressure air pipe is sequentially connected with the pressure air ejector, the vacuum suction pipe and an intermediate container, the exhaust pipe is connected with the pressure air ejector, the pressure air pipe is used for inputting compressed air into the pressure air ejector so as to enable the intermediate container to be in a vacuum state, the feed liquid in the storage tank is lifted so as to submerge small holes on the lifting pipe,
the height of the middle container (9) is higher than that of the feed liquid pumped by the lifting pipe through the pressure air ejector in vacuum, the middle container is also used for realizing gas-liquid separation on the gas-liquid mixture which flows back to the middle container through the upper return pipe, and the separated gas is pumped out by the pressure air ejector and is discharged through the exhaust pipe;
the air regulating cover comprises an upper valve plate and a lower valve plate, wherein the upper valve plate is overlapped on the lower valve plate, a first opening is formed in the lower valve plate, a plurality of second openings are formed in the upper valve plate, the diameters of the second openings are different, and the diameters of the second openings are smaller than the diameters of the first openings;
the diameter of the first opening ranges from 3 mm to 4mm, and the diameter of the second opening ranges from 1 mm to 2.5mm;
the feed liquid is radioactive feed liquid, and the pressure of the compressed air is 0.6MPa.
2. The feed liquid sampling device of claim 1, wherein rotating the upper valve plate on the lower valve plate causes a plurality of second openings to correspond to the first openings, respectively, such that air enters the air inlet pipe through the second openings on the upper valve plate and the first openings on the lower valve plate.
3. The feed liquid sampling device of claim 2, wherein a plurality of the second openings are circumferentially distributed on the upper valve plate and the diameters thereof decrease in a clockwise/counterclockwise direction in sequence.
4. The feed liquid sampling device of claim 1, wherein the intermediate vessel is an elongated conical vessel.
5. The feed liquid sampling device according to any one of claims 1 to 4, wherein the sampling unit further comprises a sampling needle and a vacuum sampling bottle,
the bottom of the sampling needle is communicated with the sampling container, the input port of the upper return pipe is higher than the bottom of the sampling container, the input port of the sampling needle is positioned between the bottom of the sampling container and the input port of the upper return pipe,
the top end of the sampling needle can be inserted into the vacuum sampling bottle so that the vacuum sampling bottle can collect feed liquid outside the sampling container.
6. An automatic sampling and delivering system for material liquid, comprising an automatic sampling and delivering device, characterized in that the automatic sampling and delivering device further comprises a material liquid sampling device according to any one of claims 1-5, wherein the automatic sampling and delivering device is used for extracting the material liquid from a storage tank to automatically deliver the material liquid to an analysis system.
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| US2995037A (en) * | 1956-08-11 | 1961-08-08 | Atomic Energy Authority Uk | Apparatus for sampling liquids |
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| CN209688149U (en) * | 2019-02-01 | 2019-11-26 | 吴晓晓 | A kind of filter with flow control valve |
| CN210863251U (en) * | 2019-08-15 | 2020-06-26 | 中国核电工程有限公司 | Radioactive feed liquid sampling system |
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2020
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| US2995037A (en) * | 1956-08-11 | 1961-08-08 | Atomic Energy Authority Uk | Apparatus for sampling liquids |
| CN105004572A (en) * | 2015-07-27 | 2015-10-28 | 中国原子能科学研究院 | An automatic quantitative sampling device |
| CN207722310U (en) * | 2017-12-20 | 2018-08-14 | 深圳市美好创亿医疗科技有限公司 | Respiratory training blow gun and portable lung function instrument |
| CN209432505U (en) * | 2018-12-07 | 2019-09-24 | 浙江省天正设计工程有限公司 | Sealing and circulating sampler for liquid sampling poisonous and harmful in container analysis |
| CN209688149U (en) * | 2019-02-01 | 2019-11-26 | 吴晓晓 | A kind of filter with flow control valve |
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