WO2022021594A1 - Dispositif d'échantillonnage automatique - Google Patents

Dispositif d'échantillonnage automatique Download PDF

Info

Publication number
WO2022021594A1
WO2022021594A1 PCT/CN2020/118395 CN2020118395W WO2022021594A1 WO 2022021594 A1 WO2022021594 A1 WO 2022021594A1 CN 2020118395 W CN2020118395 W CN 2020118395W WO 2022021594 A1 WO2022021594 A1 WO 2022021594A1
Authority
WO
WIPO (PCT)
Prior art keywords
sampling
container
sampling container
channel
liquid
Prior art date
Application number
PCT/CN2020/118395
Other languages
English (en)
Chinese (zh)
Inventor
邹雄伟
蔡志
李智
凌清
赵行文
Original Assignee
力合科技（湖南）股份有限公司
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 力合科技（湖南）股份有限公司 filed Critical 力合科技（湖南）股份有限公司
Publication of WO2022021594A1 publication Critical patent/WO2022021594A1/fr

Links

Images

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
    • G01N1/14—Suction devices, e.g. pumps; Ejector devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • 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
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14—Suction devices, e.g. pumps; Ejector devices
    • G01N2001/1418—Depression, aspiration

Definitions

  • the present invention relates to the technical field of environmental monitoring, in particular, to an automatic sampling device.
  • the sampling method of environmental supervision departments is basically manual sampling, which has problems such as limited sampling frequency, large investment in human and material resources, greater safety hazards, and long sampling period.
  • water quality sampling and monitoring mainly adopts manual sampling, and a small number of water quality automatic samplers installed on site for automatic sample retention.
  • the manual sampling method is suitable for sampling requirements with low frequency (such as once a month/week), or requirements with high frequency but short sampling distance (such as sampling in the factory area), but the manual sampling method is difficult to capture the sampling timing.
  • It is difficult to control the sampling quality the personnel input is large, and there are many disadvantages such as potential safety hazards.
  • the water quality automatic sampler can be applied to high-frequency sampling requirements, and can achieve isochronous, equal, equal time, equal flow rate, and external conditions change to a critical point to trigger sampling.
  • manual sampling it has many advantages, but it also has many advantages. There are disadvantages such as high requirements for on-site installation and use conditions, requiring an external power supply, high cost, large investment, large volume, long construction period, and inconvenient layout.
  • sampling device that can realize automatic sampling without external power, get rid of the constraints of sampling power sources, greatly improve the flexibility and diversity of sampling methods, reduce sampling investment, and effectively reduce its volume.
  • the flexibility of the sampling device is improved, which can meet the requirements of watershed sampling in the wild or dangerous areas, eliminate hidden safety hazards in the sampling process, and is suitable for water sampling in various complex environments.
  • the invention provides an automatic sampling device to solve the technical problem of manual sampling operation and difficult operation in the existing environmental monitoring, without the need to provide power.
  • the formed pressure difference realizes the automatic injection of the sample liquid. It is suitable for water sampling in various complex water environments, with high flexibility and adaptability.
  • an automatic sampling device comprising a sampling container and a flow passage communicating with the sampling container; the sampling container has at least two regions with different average densities, so that the sampling device is placed after the sample liquid sampling point , part of the overflow channel is located below the liquid surface, and there is a pressure difference between the inner cavity of the sampling container and the liquid surface, so that the sample liquid enters the sampling container from part of the overflow channel under the action of the pressure difference.
  • the overflow channel includes a sampling channel and an exhaust channel, the sampling channel is located in the area with the largest average density of the sampling container, and the exhaust channel is located in the area with the smallest average density of the sampling container, so that the sampling container is put into the sample liquid sampling. After the point, some or all of the injection channel is below the liquid level.
  • multiple regions with different average densities are formed by processing the material and/or shape of the sampling container itself; or multiple regions with different average densities are formed by arranging a weight structure in and/or outside the sampling container; or A plurality of regions with different average densities are formed by arranging the air flotation structure in the sampling container and/or outside the sampling container.
  • the average density of the entire sampling container is not greater than the density of the sample liquid to be collected.
  • the sampling container is provided with a control module for controlling sampling, a power supply module for supplying power to the control module, and a communication module for receiving and transmitting signals, and the control module is electrically connected with the communication module.
  • the exhaust passage is provided with an exhaust valve connected with the control module.
  • sampling channel is provided with a sampling valve connected with the control module.
  • a pressure sensor, a positioning module, a temperature sensor, a conductivity sensor, a gyroscope sensor, a pH sensor, an ORP sensor, a dissolved oxygen sensor, a turbidity sensor, a sound pickup, and a video acquisition device connected to the control module are also installed in the sampling container. at least one of the.
  • the communication module is located on the sampling container in an area above or near the liquid level where signals can be transmitted after sampling.
  • the sampling container includes a plurality of units; the plurality of units are of separate structures, which are sealed and connected to each other; or the plurality of units have an integral structure.
  • the automatic sampling device of the present invention forms a plurality of regions with different average densities in the sampling container, so that after the sampling container is put into the liquid sampling point, there is a pressure difference between the inner cavity of the sampling container and the liquid surface, and part of the flow passages It is located below the liquid level, so that the liquid to be collected is automatically collected from part of the overflow channel into the sampling container.
  • the pressure difference between the inner cavity of the sampling container and the liquid surface is zero, or when the attitude of the sampling container changes during the sampling process.
  • the sampling is automatically stopped, so the sampling can be automatically injected and automatically stopped without manual sampling operation, and the structure is simple and the manufacturing cost is low.
  • FIG. 1 is a schematic structural diagram of an automatic sampling device according to a preferred embodiment of the present invention.
  • Fig. 2 is the structural schematic diagram of the use state of the automatic sampling device of the preferred embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of an automatic sampling device according to another embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of an automatic sampling device according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an automatic sampling device according to another embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of an automatic sampling device according to another embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of an automatic sampling device of a preferred embodiment of the present invention
  • FIG. 2 is a structural schematic diagram of an automatic sampling device of a preferred embodiment of the present invention in use state
  • FIG. 3 is a structural schematic diagram of an automatic sampling device of another embodiment of the present invention
  • Fig. 4 is the structural representation of the automatic sampling device of another embodiment of the present invention
  • Fig. 5 is the structural representation of the automatic sampling device of another embodiment of the present invention
  • Fig. 6 is the structure of the automatic sampling device of another embodiment of the present invention Schematic.
  • the automatic sampling device of this embodiment includes a sampling container and a flow passage communicating with the sampling container.
  • the sampling container has at least two areas with different average densities, so that the sampling device is placed after the sample liquid sampling point. , part of the overflow channel is located below the liquid surface, and there is a pressure difference between the inner cavity of the sampling container and the liquid surface, so that the sample liquid can smoothly enter the sampling container from the partial overflow channel under the action of the pressure difference. Therefore, through the two areas with different densities of the sampling device, the sampling container is put on the sampling liquid surface, and the liquid enters the sampling container through the contact part of the flow channel and the liquid surface under the action of the pressure difference, so as to complete the sampling automatic sampling.
  • the sampling device provided by the present invention is placed on the water surface, since the sampling device has at least two areas with different densities, and the overflow channel is located in the area where the average density is greater than the density of the sample liquid to be collected, the gravity Under the action, the area of the over-flow channel must first contact the water surface, and then part of the water is emptied. At this time, there is a height difference between the inner cavity of the sampling container connected to the over-flow channel and the liquid level of the sampling point, resulting in a pressure difference. , the water can smoothly enter the sampling container under the action of the pressure difference, so as to complete the automatic sampling of surface water.
  • the overflow channel includes a sampling channel 3 and an exhaust channel 4
  • the sampling container has a plurality of regions with different average densities
  • the sampling channel 3 is located at a position where the average density is greater than In the density area of the liquid to be sampled, after the sampling container is put into the liquid sampling point, part and/or all of the sampling channel 3 is below the liquid level, and there is a pressure difference between the inner cavity of the sampling container and the liquid level, so that the The collected liquid is automatically collected from the sampling channel 3 into the sampling container.
  • the sampling container is formed into a plurality of regions with different average densities, and the sampling channel 3 is arranged in the region with the highest average density of the sampling container, and the exhaust channel is arranged in the region with the smallest average density. 4.
  • part and/or all of the sampling channel 3 is located below the liquid level, and there is a pressure difference between the inner cavity of the sampling container and the liquid surface, so that the liquid to be collected is automatically removed from the sampling channel. 3.
  • Collected into the sampling container when the pressure difference between the sampling container and the liquid to be sampled is zero, the sampling will be automatically stopped, so it can automatically inject and stop sampling without manual sampling operation, and the structure is simple and the manufacturing cost Low.
  • the collection container has at least two regions with different average densities, and the sampling channel 3 is located in the region of the sampling container with the highest average density.
  • the sampling container is placed at the liquid sampling site, after the area near the sampling channel 3 contacts the liquid surface, the liquid to be collected is evacuated, so that part or all of the sampling channel 3 is below the liquid level, and the exhaust channel 4 communicates with the outside world.
  • there is a height difference between the sampling container and the liquid level and then a pressure difference is generated, so that the liquid to be collected is automatically collected from the sampling channel 3 to the sampling container, and the gas in the sampling container is discharged from the exhaust channel 4 to the outside world.
  • the weight of the sampling container changes, so that the overall average density distribution of the sampling container changes, so the attitude of the sampling container also changes.
  • the sampling channel 3 of the sampling container changes to above the liquid level is automatically stopped sampling.
  • the exhaust channel 4 is not lower than the liquid level in the sampling container.
  • the overall average density of the collection container is not greater than the density of the collected sample solution. Therefore, the sampling container after sampling is still floating on the liquid surface.
  • the average density of different areas of the sampling container is designed to make the automatic sampling volume of the sampling container meet the requirements.
  • the average density of the area near the injection channel 3 is designed to be not less than the density of the sample liquid to be tested, and the average density of the area near the exhaust channel 4 is not greater than the density of the sample liquid to be tested.
  • the average density of the area near the sampling channel 3 is smaller than the density of the sample liquid to be tested, but with the structural design connected to it, after the sampling container is placed on the sampling liquid level, the inner cavity of the sampling container and the liquid surface are separated.
  • the liquid to be collected is partially emptied, so that part or all of the sampling channel 3 is below the liquid level, and it can ensure that the sample liquid can smoothly enter the sampling under the pressure difference.
  • the average density of the sample injection channel 3 area is less than the density of the sample liquid to be tested, and there is a pressure-providing structure or component outside this area. Partial evacuation of the sampled liquid results in a pressure differential between the inner cavity of the sampling container and the liquid surface.
  • the density of the sampling channel 3 area and the density to be collected can be
  • the relationship between the sample liquids can also be designed with other similar structures different from this. For example, by attaching an external auxiliary structure to the sampling container to provide power to the sampling container, so that when the sampling container is in a balanced position, it is sufficient to ensure that part or all of the sampling channel 3 is below the liquid level. This can be adjusted appropriately according to the specific situation.
  • the specific fixed positional relationship or other structural shapes that achieve the same function should be easily conceived by those skilled in the art, so they will not be repeated here.
  • the average density of the entire sampling container in the cavity state, is the ratio of the mass of the sampling container to the volume of the sampling container; in the sampling state, the average density is the sampling container and the sample collected inside.
  • the average density of the entire sampling container is not greater than the density of the sample liquid to be collected. Therefore, it can be ensured that the entire sampling container can float on the surface of the liquid to be sampled during and after the sampling process.
  • the exhaust channel 4 may be a ventilating hole with the outside, and/or a pipe communicating with the sampling container, as long as the air flow in the sampling container can be smoothly diverted.
  • sampling channel 3 can also be a pipeline connected to the sampling container, thereby facilitating the collection of the sample liquid below the liquid level of the sample liquid to be measured, for example, the sample liquid at a fixed depth below the liquid level of the sample liquid to be collected liquid.
  • the sampling container may be a plurality of conjoined cavities, and/or a plurality of cavities independent of each other. Therefore, by controlling the valve, it can be realized that a sampling device can take sampling at multiple sampling points; or a controller can realize sampling at the same sampling point, and/or multiple sampling points in different time periods.
  • the overall average density of the collection container prior to sampling is less than the density of the liquid sample.
  • the sampling channel 3 is located in the area with the highest average density of the sampling container.
  • the gas in the sampling container is discharged from the exhaust channel 4 to the outside.
  • the exhaust channel 4 also sinks below the liquid level.
  • the exhaust channel 4 does not sink below the liquid level.
  • the overall average density of the sampling container after sampling is completed is still less than the density of the liquid sample, so the sampling container after sampling is still floating on the liquid surface.
  • the automatic sampling volume of the sampling container is equal to the drainage volume of the sampling container. According to the requirements of the sampling volume of the liquid sample, the average density of different areas of the sampling container is designed to make the automatic sampling volume of the sampling container meet the requirements.
  • the overall mean density of the collection container prior to sampling is equal to the density of the liquid sample.
  • the sampling channel 3 is located in the area with the highest average density of the sampling container.
  • the gas in the sampling container is discharged to the outside through the exhaust channel 4, and when the sampling container is filled with the liquid sample bottle, the sampling is automatically stopped.
  • the collection container is suspended below the liquid surface after collection.
  • the collection container sinks below the liquid surface after collection.
  • the automatic sampling volume of the sampling container is equal to the total volume of the sampling container. According to the requirements of the sampling volume of the liquid sample, the overall average density of the sampling container and the total volume of the sampling container are designed to make the automatic sampling volume of the sampling container meet the requirements.
  • a plurality of regions with different average densities are formed by the manufacturing material and/or shape processing of the sampling container itself.
  • a plurality of regions with different average densities are formed by arranging a counterweight structure in the sampling container and/or outside the sampling container.
  • a plurality of regions with different average densities are formed by arranging an air flotation structure inside and/or outside the sampling container.
  • the sampling channel 3 is set near the counterweight 5, so that the sampling channel 3 is located in the area where the average density of the sampling container is the highest.
  • the sampling container includes a plurality of units, and the sampling channel 3 and the exhaust channel 4 are arranged on one of the units.
  • the plurality of units are of separate structures and are connected to each other in a sealed manner.
  • the plurality of units are integrated into a single unitary structure.
  • the sampling container includes two units, a bottle body 1 and a bottle cap 2 , and the sampling channel 3 and the exhaust channel 4 are provided on the bottle cap 2 .
  • the area where the sampling channel 3 is located is the area with the highest average density on the sampling container.
  • the area where the sampling channel 3 is located is placed in the water by putting the sampling container into the water.
  • the sampling channel 3 is located below the water surface, and the exhaust channel 4 is located above the water surface.
  • the sample is automatically collected into the bottle body 1, and the density distribution of the sampling container is gradually changed through the gradual increase of water samples in the bottle body 1, so that the attitude of the sampling container changes.
  • the sampling container automatically stops sampling, thereby completing the automatic quantitative sampling of water samples.
  • the bottle body 1 is provided with a bottle mouth, and the bottle cap 2 is sealed on the bottle mouth.
  • an anti-counterfeiting detection device for detecting whether the bottle cap 2 and the bottle mouth have been opened is installed between the bottle cap 2 and the bottle mouth.
  • the anti-counterfeiting detection device includes at least one of a piezoelectric sensor, an electromagnetic sensor, a contact switch and a probe.
  • the piezoelectric sensor is arranged between the bottle cap 2 and the bottle body 1.
  • the piezoelectric sensor can detect the pressure change and feed it back to the control module 6.
  • the control module 6 is the It can record the twisting event or generate alarm information and transmit it to the remote management platform to remind the staff that the water sample may be tampered with.
  • the electromagnetic sensor When an electromagnetic sensor is used, the electromagnetic sensor is arranged between the bottle cap 2 and the bottle body 1. When the bottle cap 2 is twisted, the magnetic field will change, and the electromagnetic sensor will generate a feedback electrical signal and transmit it to the control module 6. The control module 6 You can record the twisting event or generate alarm information and transmit it to the remote management platform.
  • a contact switch When a contact switch is used, one contact is set on the bottle cap 2, and the other contact is set on the bottle body 1.
  • the two contacts just touch, and the circuit is turned on. When being twisted, the two contacts are staggered and the circuit is disconnected.
  • the control module 6 can monitor that the circuit is in a disconnected state, and can determine that the bottle cap 2 is twisted, and the control module 6 records the twisting event or generates an alarm. The information is transmitted to the remote management platform.
  • one of the probes is set on the bottle cap 2, and the other probe is set on the bottle body 1.
  • the two probes just touch, and the circuit is turned on.
  • the control module 6 can monitor that the circuit is in a disconnected state, and can determine that the bottle cap 2 is twisted, and the control module 6 records the twisting event. Or generate alarm information and transmit it to the remote management platform.
  • anti-counterfeiting labels are also provided on the sampling containers, and each sampling container corresponds to a unique anti-counterfeiting label. The comparison is performed to verify the authenticity of the sampling container to prevent the entire sampling container from being exchanged during transportation, which further improves the anti-counterfeiting performance of the water sample.
  • the anti-counterfeiting label may be at least one of two-dimensional code, barcode and RFID.
  • the sampling container is equipped with a control module 6 for controlling sampling, a power supply module 7 for supplying power to the control module 6, and a communication module for receiving and transmitting signals.
  • the module is located in an area capable of receiving and transmitting signals, and the control module 6 is electrically connected with the communication module.
  • the communication module is located on the sampling container and is located in the area above or near the liquid surface that can transmit signals after sampling. In this embodiment, after the sampling is completed, the communication module is above the liquid level or not less than 25 cm below the liquid level, so as to transmit the sampling signal to the remote management platform.
  • the communication module includes 3G/4G/5G module, NB-IOT module, eMTC module, LoRa module or Sigfox module, so that the detection parameters can be remotely transmitted to the remote management platform in real time; module, Wi-fi module or Zigbee module, the staff can bring the management terminal to the site and establish a wireless connection with the communication module, so as to wirelessly read the monitoring data stored in the control module 6 .
  • the communication module may be omitted, and after the sampling container is picked up from the water environment, the monitoring data in the control module 6 can be directly read by the management terminal through the interface.
  • an identification module is also installed on the sampling container.
  • the identification module is identified by special text patterns and/or symbols.
  • the identification module is identified by illumination.
  • the recognition module performs recognition through ringtones or voice broadcasts.
  • the sampling channel 3 is provided with a sampling valve 8 connected to the control module 6 .
  • the control module 6 determines whether the automatic sampling device starts sampling, so as to control the sampling valve 8 to open, and then start automatic sampling.
  • the exhaust passage 4 is provided with an exhaust valve 9 connected to the control module 6 . After the sampling is completed, the control module 6 controls the exhaust valve 9 to close to prevent foreign impurities from entering the sampling container from the exhaust channel 4 .
  • the sampling valve and the sampling valve 8 are both solenoid valves.
  • a filter device is installed at the injection port of the injection channel 3 to filter out large particle impurities in the liquid sample.
  • the control module 6 is also used to control the sampling state according to the detection result of the pressure sensor 11 or the liquid level sensor to realize automatic quantitative sampling.
  • the pressure detection result of the pressure sensor 11 and the liquid level detection result of the liquid level sensor can be correspondingly converted into the sampling volume, and the pressure sensor 11 or the liquid level sensor is used to monitor the sampling volume in the sampling container in real time and transmit the detection result to the control module 6 , the control module 6 controls the sampling state according to the detection result, so as to realize automatic quantitative sampling.
  • a positioning module electrically connected to the control module 6 is also installed on the sampling container, and the control module 6 is further configured to obtain the position information of the sampling container through the positioning module.
  • the positioning module may be any one of a GPS positioning module, a Beidou positioning module, and a Galileo positioning module.
  • the location of the sampling container can be obtained in real time through the positioning module, and the real-time location can be stored in association with the monitoring data or transmitted to the remote management platform together, which improves the authenticity of the sampling and facilitates the recovery of the sampling container.
  • the water sample can also be positioned and supervised throughout the process to prevent tampering with the water sample during transportation, further improving the anti-counterfeiting performance of the water sample.
  • the sampling container is also provided with a gyroscope sensor that is electrically connected to the control module 6 and used to detect the attitude of the sampling container.
  • the control module 6 is also used to detect that the current attitude of the sampling container does not conform to the preset attitude when the gyro sensor detects that the current attitude of the sampling container does not conform to the preset attitude. When it is in range, it records abnormal posture events or generates alarm information and transmits it to the remote management platform.
  • the control module 6 is preset with a preset attitude range for the sampling container to be put into the water environment. Only when the attitude of the sampling container is within the preset attitude range can smooth sampling be ensured.
  • the current attitude of the sampling container is detected by the gyroscope sensor and will be detected.
  • control module 6 compares that the current posture of the sampling container does not meet the preset posture range, it means that the current posture of the sampling container does not meet the requirements, and the sample may not be injected normally.
  • the control module 6 generates alarm information and transmits it to the remote management platform through the communication module, timely reminding the staff to adjust the posture of the sampling container manually, or the control module 6 Record the abnormal posture events, and remind the staff to overhaul the structure of the sampling container.
  • the sample injection channel 3 and the exhaust channel 4 are arranged on the bottle cap 2 , and the control module 6 , the power supply module 7 and other functional modules are installed in the bottle cap 2 , And by biasing the installation of the control module 6, the power module 7 and/or other functional modules to the area where the sampling channel 3 is located, the area where the sampling channel 3 is located is the area with the highest average density on the sampling container, while the exhaust channel is located.
  • the area of 4 is the area with the smallest average density on the sampling container.
  • the control module 6 controls the exhaust valve 9 to close, so that the sampling container stops sampling.
  • the control module 6 controls the sampling valve 8 to close, so that the sampling container stops sampling.
  • the bottle cap 2 is closed on the top of the bottle body 1 , the exhaust channel 4 is arranged on the bottle cap 2 , and the sample injection channel 3 is arranged at the bottom of the bottle body 1 .
  • the area where the exhaust channel 4 is located is the area with the smallest average density on the sampling container.
  • the sampling channel 3 is collected into the bottle body 1, and the gas in the sampling container is discharged from the exhaust channel 4 to the outside world.
  • the control module 6 controls the exhaust valve 9 to close, so that the sampling container stops sampling.
  • the control module 6 controls the sampling valve 8 to close, so that the sampling container stops sampling.

Landscapes

  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Hydrology & Water Resources (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

L'invention concerne un dispositif d'échantillonnage automatique, comprenant un récipient d'échantillonnage et un canal de passage d'écoulement en communication avec le récipient d'échantillonnage ; le récipient d'échantillonnage comporte au moins deux régions de densités moyennes différentes, de telle sorte que lorsque le dispositif d'échantillonnage est placé à un point d'échantillonnage dans un liquide d'échantillonnage, une partie du canal de passage d'écoulement est située en dessous d'un niveau de liquide, et une différence de pression se produit entre la cavité interne du récipient d'échantillonnage et le niveau de liquide, de telle sorte que le liquide d'échantillonnage entre dans le récipient d'échantillonnage depuis la partie du canal de passage d'écoulement sous l'effet de la différence de pression. Lorsque le récipient d'échantillonnage est placé à un point d'échantillonnage de liquide, un liquide à collecter est automatiquement collecté dans le récipient d'échantillonnage depuis une partie du canal de passage d'écoulement ; lorsque la différence de pression entre la cavité interne du récipient d'échantillonnage et le niveau de liquide est nulle, ou lorsque l'attitude du récipient d'échantillonnage change pendant un processus d'échantillonnage de telle sorte que le canal de passage d'écoulement du récipient d'échantillonnage est complètement modifié pour se situer au-dessus du niveau de liquide, l'échantillonnage est automatiquement interrompu ; ainsi, l'échantillonnage peut être automatiquement effectué et l'échantillonnage peut être automatiquement interrompu, sans opération d'échantillonnage manuelle ; en outre, la structure est simple et le coût de fabrication est faible.
PCT/CN2020/118395 2020-07-31 2020-09-28 Dispositif d'échantillonnage automatique WO2022021594A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010761749.3 2020-07-31
CN202010761749.3A CN114088465A (zh) 2020-07-31 2020-07-31 自动采样装置

Publications (1)

Publication Number Publication Date
WO2022021594A1 true WO2022021594A1 (fr) 2022-02-03

Family

ID=80037077

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/118395 WO2022021594A1 (fr) 2020-07-31 2020-09-28 Dispositif d'échantillonnage automatique

Country Status (2)

Country Link
CN (1) CN114088465A (fr)
WO (1) WO2022021594A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205898499U (zh) * 2016-07-26 2017-01-18 三峡大学 一种湖库定深采样装置
CN107831037A (zh) * 2017-09-28 2018-03-23 南京智计检测技术服务有限公司 一种直接取样式水质分析仪
CN108801694A (zh) * 2018-06-27 2018-11-13 葛丁阳 一种水体样本的采样装置
CN208459067U (zh) * 2018-07-26 2019-02-01 青岛哈文船艇有限公司 一种自动水样采集器
CN208872548U (zh) * 2018-09-18 2019-05-17 上海市岩土地质研究院有限公司 观测井汲水装置
KR20190063039A (ko) * 2017-11-29 2019-06-07 주식회사 라스테크 채수기

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2950441C (fr) * 2014-07-18 2021-02-16 Exxonmobil Upstream Research Company Procede et systeme pour effectuer une etude et un echantillonnage dans un corps d'eau
CN208751908U (zh) * 2018-08-17 2019-04-16 浙江小桥流水环境科技有限公司 一种采样瓶自动密封装置
CN212904042U (zh) * 2020-07-31 2021-04-06 力合科技（湖南）股份有限公司 自动采样装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205898499U (zh) * 2016-07-26 2017-01-18 三峡大学 一种湖库定深采样装置
CN107831037A (zh) * 2017-09-28 2018-03-23 南京智计检测技术服务有限公司 一种直接取样式水质分析仪
KR20190063039A (ko) * 2017-11-29 2019-06-07 주식회사 라스테크 채수기
CN108801694A (zh) * 2018-06-27 2018-11-13 葛丁阳 一种水体样本的采样装置
CN208459067U (zh) * 2018-07-26 2019-02-01 青岛哈文船艇有限公司 一种自动水样采集器
CN208872548U (zh) * 2018-09-18 2019-05-17 上海市岩土地质研究院有限公司 观测井汲水装置

Also Published As

Publication number Publication date
CN114088465A (zh) 2022-02-25

Similar Documents

Publication Publication Date Title
CN114062038A (zh) 一种污染溯源管控方法
CN105044370B (zh) 一种无人值守的重金属污水监测设备
CN206848259U (zh) 一种水质监测装置
CN106197541B (zh) 一种地下水自动监测设备
WO2022021594A1 (fr) Dispositif d'échantillonnage automatique
CN212904042U (zh) 自动采样装置
CN208736861U (zh) 黑臭水体表观污染指数检测装置
CN212341013U (zh) 溶液阴极辉光放电光谱检测系统的自动进样装置
CN114088902A (zh) 一种带监管功能的水环境智能采样终端
CN208155846U (zh) 一种自来水水质光学检测装置
CN114062037B (zh) 自动采样装置及方法
CN114062624A (zh) 一种地表水入海口断面潮汐自动采样方法及系统
CN106679768A (zh) 一种浮子开关式液体泄漏量监测无线采集终端设备
CN114062037A (zh) 自动采样装置及方法
CN207751990U (zh) 一种排水检测装置
CN209011257U (zh) 一种基于公路特大桥桥面径流事故收集池的处理系统
CN209468164U (zh) 一种移动式应急水箱供水系统
CN114382463A (zh) 一种放射性同位素测井示踪剂井下筛选装置
CN114062052A (zh) 河流动态采样方法及带监管功能的水环境智能采样终端
CN208636302U (zh) 一种检测饮用水ORP及pH值的装置
CN208721451U (zh) 环境污染物检测取样瓶
CN213544544U (zh) 智能采样装置
CN208833744U (zh) 一种水质监测装置
CN105890932A (zh) 水体分层采样器
CN212782272U (zh) 采样装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20947151

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20947151

Country of ref document: EP

Kind code of ref document: A1