Underwater in-situ fidelity sampler and method

Abstract

The invention belongs to the technical field of water sampling, and particularly relates to an underwater in-situ fidelity sampler and method.The sampler comprises a sealed cabin, a multi-way valve, a water taking assembly, a storage assembly and a control unit are arranged in the sealed cabin, the water taking assembly is connected with the common end of the multi-way valve, and a first connector of the multi-way valve is communicated with an external water area of the sealed cabin; each second connector of the multi-way valve is connected with one storage assembly. The water taking assembly, the multi-way valve and the storage assembly are all in signal connection with the control unit. And the multi-way valve acts, so that the water taking assembly, the multi-way valve and the storage assembly are in a first connection state or a second connection state. When water is taken at different points, the multi-way valve is controlled to rotate to different second connectors, samples collected at different points are stored in different storage assemblies, in-situ water taking at different underwater points is achieved, and it is guaranteed that all the points are independent of one another and free of interference and pollution.

Description

Technical Field

[0001] The invention belongs to the technical field of water body sampling, in particular to an underwater in-situ fidelity sampler and method. Background Art

[0002] An underwater in-situ fidelity sampler is a device that collects water samples directly in an underwater environment. Its core feature is to avoid distortion of samples caused by environmental changes (such as pressure, temperature, contact with pollutants, etc.) during the collection process.

[0003] Existing underwater in-situ fidelity samplers struggle to accurately sample water at different depths, especially in the mid-bottom layer or deep sea environments. During sampling, water samples from different locations are prone to cross-contamination, resulting in insufficient sample representation.

[0004] Existing underwater in-situ fidelity samplers are complex to operate, often relying on manual labor, such as opening sampling bottle caps and adjusting valves. This makes it difficult to achieve underwater sealing and automated control, impacting data accuracy and operational efficiency. Furthermore, the disparate functional modules make the equipment bulky and difficult to deploy quickly in complex underwater environments. Summary of the Invention

[0005] In order to achieve in-situ water sampling at different underwater depths and ensure that each point is independent of each other and free from interference and pollution, the purpose of the present invention is to provide an underwater in-situ fidelity sampler and method.

[0006] To achieve the above object, the present invention provides the following technical solutions: The underwater in-situ fidelity sampler of the present invention includes a sealed cabin and a multi-way valve, a water intake component, a storage component and a control unit respectively arranged in the sealed cabin, the multi-way valve is provided with a common end, a first interface and several second interfaces; the water intake component is connected to the common end of the multi-way valve, the first interface of the multi-way valve is communicated with the water area outside the sealed cabin, each second interface of the multi-way valve is connected to a storage component, and the water intake component, the multi-way valve and each storage component are respectively connected to the control unit by signal; the water intake component, the multi-way valve and each storage component are in a first connection state or a second connection state through the action of the multi-way valve, the first connection state is that the water intake component is connected to the water area outside the sealed cabin via the common end and the first interface of the multi-way valve in sequence, and the second connection state is that the water intake component is communicated with the storage component via the common end and the second interface of the multi-way valve in sequence.

[0007] Preferably, the water intake assembly includes an electric cylinder, a syringe and a conducting tube, the telescopic rod of the electric cylinder is connected to the syringe push rod, and the interface of the syringe is connected to the common end of the multi-way valve; one end of the conducting tube is connected to the first interface of the multi-way valve, and the other end of the conducting tube passes through the sealed cabin to connect to the water intake probe; the control end signal of the electric cylinder is connected to the control unit.

[0008] Preferably, the storage component includes a two-way valve, a water storage bag and a stop valve, one end of the two-way valve is connected to the second interface of the multi-way valve via a pipeline, the other end of the two-way valve is connected to the water storage bag via a pipeline, the control end signal of the two-way valve is connected to the control unit, and a stop valve is provided at the port position of the water storage bag.

[0009] Preferably, a detachable quick connector is provided on the pipeline between the two-way valve and the cut-off valve.

[0010] Preferably, the sealed cabin includes an outer shell, a bottom cover arranged at the bottom of the outer shell and a top cover arranged at the top of the outer shell, a mounting frame is provided between the bottom cover and the top cover, and the electric cylinder, syringe, multi-way valve and two-way valve are respectively arranged on the mounting frame.

[0011] Preferably, it also includes a camera and a lighting lamp arranged in the sealed cabin, and the bottom cover is provided with transparent glass. The camera and the lighting lamp can be used for underwater shooting through the transparent glass, and the camera and the lighting lamp are respectively connected to the control unit by signals.

[0012] Preferably, it further comprises a porous shield arranged on the top cover, wherein the porous shield covers the outside of the water sampling probe.

[0013] Preferably, it further comprises a lifting ring provided on the top cover, wherein the lifting ring is used for lifting or lowering the underwater in-situ fidelity sampler.

[0014] Preferably, it further comprises a temperature-salinity-depth measuring instrument arranged outside the shell, the temperature-salinity-depth measuring instrument is used to detect the temperature, salinity and depth of the water intake point, and the signal of the temperature-salinity-depth measuring instrument is connected to the control unit.

[0015] The underwater in-situ fidelity sampling method of the present invention uses the above-mentioned underwater in-situ fidelity sampler, comprising the following steps: In step A, the shut-off valve on each storage assembly is in an open state, and the control unit controls the electric cylinder in the water extraction assembly to pull the syringe push rod to extract the gas in each water storage bag, so that each water storage bag is in a vacuum state and the syringe is in an initial state, that is, the syringe push rod is pushed to the bottom; Step B: lowering the underwater in-situ fidelity sampler to a set point underwater, the control unit controls the multi-way valve to rotate to one of the second interfaces, and opens the corresponding two-way valve, and the electric cylinder pulls the syringe push rod to the bottom, and the water bag corresponding to the one of the second interfaces is evacuated again to ensure vacuum; Step C, the control unit controls the multi-way valve to rotate to the first interface, and the electric cylinder drives the syringe push rod to the bottom, so that the gas is pushed out to the outside; Step D: The electric cylinder drives the syringe to draw in and push out seawater, repeating the cycle multiple times to clean the syringe. In step E, the electric cylinder drives the syringe to extract seawater again, and then the control unit controls the multi-way valve to move to the second interface described in step B, pushes seawater in, and then closes the two-way valve corresponding to the second interface, and the syringe returns to the initial state, completing water extraction at one point; Step F, lowering the underwater in-situ fidelity sampler to the next set point underwater, repeating steps B to E to sample water at the next point; Step G, take the underwater in-situ fidelity sampler out of the water, close the stop valve on the water storage bag, remove the water storage bag, and end water collection.

[0016] The advantages and positive effects of the present invention are: The present invention drives the syringe push rod to be pulled and drawn by the electric cylinder to extract the gas inside the water storage bag in advance, ensuring the vacuum inside the water storage bag, and then the electric cylinder drives the syringe push rod to pump out seawater and push out seawater, and the cycle is repeated multiple times to clean the syringe and avoid contamination of the sampled water body; at different water intake points, by controlling the multi-way valve to rotate to different second interfaces, the samples collected at different points are respectively stored in different water storage bags, thereby realizing in-situ water intake at different underwater points and ensuring that each point is independent of each other, without interference and pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below.

[0018] Figure 1 Schematic diagram of the three-dimensional structure of the sampler of the present invention; Figure 2 This is one of the schematic diagrams of the internal structure of the sampler of the present invention; Figure 3 This is the second schematic diagram of the internal structure of the sampler of the present invention; Figure 4 This is one of the structural diagrams of the water intake component in the sampler of the present invention; Figure 5 for Figure 4 A partial enlarged view of point A in the middle; Figure 6 This is the second structural diagram of the water extraction component in the sampler of the present invention; Figure 7 for Figure 6 A partial enlarged view of point B in the middle; Figure 8 Schematic diagram of the bottom structure of the sampler of the present invention; Figure 9 Schematic diagram of the structure of the multi-way valve in the sampler of the present invention; Among them: 1 is the shell, 2 is the bottom cover, 3 is the top cover, 4 is the temperature, salinity and depth measuring instrument, 5 is the lifting ring, 6 is the porous shield, 7 is the first mounting plate, 8 is the second mounting plate, 9 is the third mounting plate, 10 is the mounting rod, 11 is the electric cylinder, 12 is the syringe, 13 is the syringe push rod, 14 is the water storage bag, 15 is the two-way valve, 16 is the two-way valve mounting bracket, 17 is the ten-way valve, 1701 is the first interface, 1702 is the second interface, 1703 is the common end, 18 is the conducting pipe, 19 is the first connecting pipe, 20 is the second connecting pipe, 21 is the fixed bottom plate, 22 is the fixed rod, 23 is the first fixed top plate, 24 is the second fixed top plate, 25 is the power supply, 26 is the control unit, and 27 is transparent glass. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0023] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0024] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0025] like Figures 1 to 9 As shown, the underwater in-situ fidelity sampler of the present invention includes a sealed cabin and a water intake component, a storage component, a multi-way valve and a control unit 26 respectively arranged in the sealed cabin.

[0026] The multi-way valve in this embodiment is a ten-way valve 17 , which is provided with a common end 1703 , a first interface 1701 and nine second interfaces 1702 .

[0027] The water intake component is connected to the common end 1703 of the ten-way valve 17, the first interface 1701 of the ten-way valve 17 is connected to the water area outside the sealed cabin, and the remaining nine second interfaces 1702 of the ten-way valve 17 are each connected to a storage component; the water intake component and the ten-way valve 17 are both electrically connected to the power supply 25, and the water intake component and the ten-way valve 17 are signal-connected to the control unit 26.

[0028] The ten-way valve 17 is actuated to place the water intake assembly, the ten-way valve 17, and each storage assembly in either a first connection state or a second connection state. In the first connection state, the water intake assembly is connected to the water area outside the sealed cabin via the common end of the ten-way valve 17 and the first interface 1701. In the second connection state, the water intake assembly is connected to the storage assembly via the common end of the ten-way valve 17 and the second interface 1702.

[0029] The sealed cabin of this embodiment includes a shell 1, a bottom cover 2 arranged at the bottom of the shell 1, and a top cover 3 arranged at the top of the shell 1. A mounting frame is provided between the bottom cover 2 and the top cover 3.

[0030] The mounting frame of this embodiment includes a mounting rod 10 disposed between a bottom cover 2 and a top cover 3. Mounting rod 10 is provided with, from bottom to top, a first mounting plate 7, a second mounting plate 8, and a third mounting plate 9. A power supply 25 and a control unit 26 are provided on the first mounting plate 7. A water intake assembly, a ten-way valve 17, and a storage assembly are provided between the second and third mounting plates 8, 9.

[0031] The underwater in-situ fidelity sampler of this embodiment also includes a fixed base plate 21, a fixed rod 22, a first fixed top plate 23 and a second fixed top plate 24 arranged between the second mounting plate 8 and the third mounting plate 9. The fixed base plate 21 is arranged on the second mounting plate 8, and four fixed rods 22 are arranged on the fixed base plate 21. The first fixed top plate 23 or the second fixed top plate 24 is arranged at the upper end of the fixed rod 22, and the first fixed top plate 23 is connected to the second fixed top plate 24.

[0032] The water extraction assembly of this embodiment includes an electric cylinder 11, a syringe 12, and a conducting tube 18. The electric cylinder 11 is mounted on a fixed base plate 21, and the syringe 12 is mounted on a first fixed top plate 23. The telescopic rod of the electric cylinder 11 is connected to the syringe push rod 13, and the power of the electric cylinder 11 is used to push and pull the syringe push rod 13. The electric cylinder 11 is electrically connected to a power source 25, and the control terminal signal of the electric cylinder 11 is connected to a control unit 26.

[0033] The ten-way valve 17 of this embodiment is mounted on the second fixed top plate 24. A common port 1703 is located in the center of the top of the ten-way valve 17. The port of the syringe 12 is connected to the common port 1703 of the ten-way valve 17. In addition to the central common port 1703, the ten-way valve 17 is surrounded by ten ports. The first port 1701 is connected to the conducting tube 18, and the remaining nine second ports 1702 are each connected to a storage assembly.

[0034] In this embodiment, one end of the conducting tube 18 is connected to the first port 1701 of the ten-way valve 17. The other end of the conducting tube 18 passes through the third mounting plate 9 and the top cover 3 and is connected to a water sampling probe outside the sealed cabin. This probe is in contact with the water outside the sealed cabin. When the ten-way valve 17 is rotated to the first port 1701, the electric cylinder 11 drives the syringe plunger 13 to move, drawing or pushing seawater through the conducting tube 18 and the water sampling probe.

[0035] This embodiment includes nine storage assemblies, each comprising a two-way valve 15, a water bag 14, a shutoff valve, a first connecting pipe 19, and a second connecting pipe 20. In each storage assembly, the two-way valve 15 is connected to one of the second ports 1702 of the ten-way valve 17 via the first connecting pipe 19. The two-way valve 15 is also connected to the water bag 14 via the second connecting pipe 20. A shutoff valve is located at the end of the water bag 14.

[0036] In this embodiment, both ends of the second connecting pipe 20 between the two-way valve 15 and the stop valve are further provided with detachable quick connectors to facilitate the removal or installation of the water storage bag 14.

[0037] This embodiment further includes a two-way valve mounting bracket 16 disposed on the second fixed top plate 24 , and the two-way valves 15 are arranged in a ring-shaped manner on the two-way valve mounting bracket 16 .

[0038] This embodiment also includes a camera and a light disposed between the bottom cover 2 and the first mounting plate 7. A transparent glass 27 is provided on the bottom cover 2, through which the camera and light can be viewed for underwater photography. The camera and light are electrically connected to a power supply 25, and their signals are connected to a control unit 26.

[0039] This embodiment further includes a porous shield 6 disposed on the top cover 3 . The porous shield 6 is installed on the periphery of the water sampling probe. The porous shield 6 is used to protect the water sampling probe and prevent underwater weeds and other garbage from blocking the water sampling probe.

[0040] This embodiment further includes three lifting rings 5 provided on the top cover 3 , and the lifting rings 5 are used for lifting or lowering the underwater in-situ fidelity sampler.

[0041] This embodiment also includes a temperature, salinity and depth measuring instrument 4 arranged on the outer side of the shell 1. The temperature, salinity and depth measuring instrument 4 is used to detect the temperature, salinity and depth of each water intake point. The temperature, salinity and depth measuring instrument 4 is electrically connected to the power supply 25, and the signal of the temperature, salinity and depth measuring instrument 4 is connected to the control unit 26.

[0042] The underwater in-situ fidelity sampling method of the present invention comprises the following steps: Step A: Initialize the water bag 14 and the syringe 12. The shut-off valve on the water bag 14 is in the open state. The control unit 26 controls the electric cylinder 11 to pull the syringe push rod 13 to extract the gas in each water bag 14, ensuring that each water bag 14 is in a vacuum state and that the syringe 12 is in the initial state, that is, the syringe push rod 13 is pushed to the bottom. Step B: Lower the underwater in-situ fidelity sampler to a set point underwater. The control unit 26 controls the ten-way valve 17 to rotate to one of the second interfaces 1702 and opens the corresponding two-way valve 15. The control unit 26 controls the electric cylinder 11 to pull the syringe push rod 13 to the bottom, and again evacuates the water bag 14 corresponding to the second interface 1702 to ensure a vacuum inside. Step C: The control unit 26 controls the ten-way valve 17 to rotate to the first interface 1701, and the electric cylinder 11 drives the syringe push rod 13 to the bottom, so that the gas is pushed out to the outside; Step D: The control unit 26 controls the electric cylinder 11 to drive the syringe push rod 13 to pull or push out seawater, drawing in and pushing out seawater through the first interface 1701, the conducting tube 18, and the water sampling probe. This cycle repeats three times to clean the syringe 12. In step E, the control unit 26 controls the electric cylinder 11 to drive the syringe 12 to draw a certain amount of seawater again. The control unit 26 then controls the ten-way valve 17 to switch to the second port 1702 in step 2, pushing the seawater into the water storage bag 14 corresponding to the second port 1702. The two-way valve 15 corresponding to the second port 1702 is then closed. At this point, the syringe 12 returns to its initial state, completing water extraction at one point. Step F, lowering the underwater in-situ fidelity sampler to the next set point underwater, repeating steps B to E to sample water at the next point; Step G: Take the underwater in-situ fidelity sampler out of the water, close the stop valve on the water bag 14, remove the water bag 14, and finish taking water.

[0043] In this embodiment, the electric cylinder 11 drives the syringe push rod 13 to pull and extract the gas inside the water storage bag 14 in advance, ensuring the vacuum inside the water storage bag 14. Then the electric cylinder 11 drives the syringe push rod 13 to pump out seawater and push out seawater, and the cycle is repeated multiple times to clean the syringe 12, thereby preventing the water sampled at the latter point from being contaminated by the water at the previous point; at different water intake points, by controlling the ten-way valve 17 to rotate to different second interfaces 1702, the samples collected at different points are respectively stored in different water storage bags 14, thereby realizing in-situ water intake at different underwater points and ensuring that each point is independent of each other, without interference and pollution.

[0044] The embodiments of the present invention are only used to illustrate the technical solutions of the present invention rather than to limit the present invention. Those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An underwater in-situ fidelity sampler, characterized by: It includes a sealed cabin and a multi-way valve, a water intake component, a storage component and a control unit respectively arranged in the sealed cabin, the multi-way valve is provided with a common end, a first interface and several second interfaces; the water intake component is connected to the common end of the multi-way valve, the first interface of the multi-way valve is communicated with the water area outside the sealed cabin, each second interface of the multi-way valve is connected to a storage component, and the water intake component, the multi-way valve and each storage component are respectively connected to the control unit by signal; the water intake component, the multi-way valve and each storage component are in a first connection state or a second connection state through the action of the multi-way valve, the first connection state is that the water intake component is connected to the water area outside the sealed cabin via the common end and the first interface of the multi-way valve in sequence, and the second connection state is that the water intake component is connected to the storage component via the common end and the second interface of the multi-way valve in sequence.

2. The underwater in-situ fidelity sampler according to claim 1, characterized in that: The water intake assembly includes an electric cylinder, a syringe and a conducting tube. The telescopic rod of the electric cylinder is connected to the syringe push rod, and the interface of the syringe is connected to the common end of the multi-way valve; one end of the conducting tube is connected to the first interface of the multi-way valve, and the other end of the conducting tube passes through the sealed cabin to connect to the water intake probe; the control end signal of the electric cylinder is connected to the control unit.

3. The underwater in-situ fidelity sampler according to claim 2, characterized in that: The storage component includes a two-way valve, a water storage bag and a stop valve. One end of the two-way valve is connected to the second interface of the multi-way valve via a pipeline, and the other end of the two-way valve is connected to the water storage bag via a pipeline. The control end signal of the two-way valve is connected to the control unit, and a stop valve is provided at the port position of the water storage bag.

4. The underwater in-situ fidelity sampler according to claim 3, characterized in that: A detachable quick connector is provided on the pipeline between the two-way valve and the cutoff valve.

5. The underwater in-situ fidelity sampler according to claim 3, characterized in that: The sealed cabin includes a shell, a bottom cover arranged at the bottom of the shell and a top cover arranged at the top of the shell. A mounting frame is provided between the bottom cover and the top cover. The electric cylinder, syringe, multi-way valve and two-way valve are respectively arranged on the mounting frame.

6. The underwater in-situ fidelity sampler according to claim 5, characterized in that: It also includes a camera and a lighting lamp arranged in the sealed cabin. Transparent glass is provided on the bottom cover. The camera and the lighting lamp can be used for underwater shooting through the transparent glass. The camera and the lighting lamp are respectively connected to the control unit by signals.

7. The underwater in-situ fidelity sampler according to claim 5, characterized in that: The utility model also comprises a porous shield arranged on the top cover, wherein the porous shield covers the outside of the water extraction probe.

8. The underwater in-situ fidelity sampler according to claim 5, characterized in that: It also includes a lifting ring arranged on the top cover, and the lifting ring is used for lifting or lowering the underwater in-situ fidelity sampler.

9. The underwater in-situ fidelity sampler according to claim 5, characterized in that: It also includes a temperature, salinity and depth measuring instrument arranged outside the shell, which is used to detect the temperature, salinity and depth of the water intake point, and the signal of the temperature, salinity and depth measuring instrument is connected to the control unit.

10. An underwater in-situ fidelity sampling method, characterized by: Using the underwater in-situ fidelity sampler according to any one of claims 1 to 9 comprises the following steps: In step A, the shut-off valve on each storage assembly is in an open state, and the control unit controls the electric cylinder in the water extraction assembly to pull the syringe push rod to extract the gas in each water storage bag, so that each water storage bag is in a vacuum state and the syringe is in an initial state, that is, the syringe push rod is pushed to the bottom; Step B: lowering the underwater in-situ fidelity sampler to a set point underwater, the control unit controls the multi-way valve to rotate to one of the second interfaces, and opens the corresponding two-way valve, and the electric cylinder pulls the syringe push rod to the bottom, and the water bag corresponding to the one of the second interfaces is evacuated again to ensure vacuum; Step C, the control unit controls the multi-way valve to rotate to the first interface, and the electric cylinder drives the syringe push rod to the bottom, so that the gas is pushed out to the outside; Step D: The electric cylinder drives the syringe to draw in and push out seawater, repeating the cycle multiple times to clean the syringe. In step E, the electric cylinder drives the syringe to extract seawater again, and then the control unit controls the multi-way valve to move to the second interface described in step B, pushes seawater in, and then closes the two-way valve corresponding to the second interface, and the syringe returns to the initial state, completing water extraction at one point; Step F, lowering the underwater in-situ fidelity sampler to the next set point underwater, repeating steps B to E to sample water at the next point; Step G, take the underwater in-situ fidelity sampler out of the water, close the stop valve on the water storage bag, remove the water storage bag, and end water collection.

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