CN112325947A - Deep sea near-seabed multi-parameter integrated detection device and detection method - Google Patents
Deep sea near-seabed multi-parameter integrated detection device and detection method Download PDFInfo
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- CN112325947A CN112325947A CN202011277243.1A CN202011277243A CN112325947A CN 112325947 A CN112325947 A CN 112325947A CN 202011277243 A CN202011277243 A CN 202011277243A CN 112325947 A CN112325947 A CN 112325947A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/52—Tools specially adapted for working underwater, not otherwise provided for
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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
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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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
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
Abstract
The invention relates to the field of deep sea near-seabed parameter detection, in particular to a deep sea near-seabed multi-parameter integrated detection device and a deep sea near-seabed multi-parameter integrated detection method. The method comprises the following steps: the underwater water quality monitoring system comprises a two-position three-way valve, an underwater control unit, an electric control two-position three-way valve, a water suction pump, a fluid sampling device, a sensor group A, a sensor group B, a micro-electrical-level data acquisition device, a water body acquisition device and a peristaltic pump, wherein the electric control two-position three-way valve, the water suction pump, the fluid sampling device, the sensor group; one end of the water body acquisition device is used for sampling, the other end of the water body acquisition device is respectively connected with the sensor assembly A and the electric control two-position three-way valve through a two-position three-way valve, one outlet of the electric control two-position three-way valve is sequentially connected with the peristaltic pump through a micro-electrical data acquisition device and a sensor assembly B through a drainage pipeline, and the other outlet of the electric control two-position three-way valve is connected with the; the water suction pump is connected with the sensor group A. The device has the advantages of high integration level, large parameter detection quantity, capability of sampling water simultaneously, long-time controllability, flexible and stable work, independent use and cooperation with an ROV.
Description
Technical Field
The invention relates to the field of deep sea near-seabed parameter detection, in particular to a deep sea near-seabed multi-parameter integrated detection device and a deep sea near-seabed multi-parameter integrated detection method.
Background
In the modern times, methane, hydrogen sulfide, dissolved oxygen and H in water2And other biological elements are detected on a fine scale to further elucidate which environmental variables are associated with the distribution pattern of the benthic organism community. The in-situ detection from the center to the periphery can be completed through the operation of the ROV, and the oxygen and methane availability plays an important role in the construction of communities in different microenvironments, thereby providing new environmental dynamics information for the evolution of a chemical synthesis ecosystem.
The prior patent is as follows: ROV-based accurate detection system (2017210449165.3) for deep sea physicochemical environmental parameters has been studied in relevant respects, mainly CTD, turbidity, fluorometer, PH, methane, CO2The method is characterized in that a turbidity meter, a fluorometer and PH are placed in a sensor bearing box body for sensor measurement, and then CTD measurement and methane and CO measurement are carried out2And (4) sequentially measuring. The patent relates to an underwater light field and marine environment multi-parameter observation system (201721082018.6), which is a marine underwater optical measurement technology and realizes the measurement of optical absorption, attenuation, backscattering, temperature, salinity, PH, chlorophyll, dissolved oxygen and PH. As a result, H was not involved2S、H2、N2O, NO, measurement of potential and resistivity, and no continuous sampling capability of fidelity water body. CTD sensors from other seabirds or other companies are all aerial or fixed-point devices and methods, and are rarely involved in hunting particularly near the ocean floor in deep sea.
In conclusion, the in-situ detection method based on the multi-parameter integrated detection of the offshore bottom is less developed domestically, deep sea experiments are lacked, and the in-situ detection method based on the multi-parameter integrated detection of the offshore bottom is more deeply researched and systematically researched by combining the existing research experiences at home and abroad and by utilizing the accurate positioning capability of the ROV, so that the problem to be solved urgently is solved.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a deep sea near-seabed multi-parameter integrated detection device and a detection method, which aim at the technical bottleneck of the current deep sea near-seabed multi-parameter detection and break through CTD, dissolved oxygen, methane and CO2、PH、H2S、H2、N2O, NO parameter, break through the problem of in-situ fidelity sampling while detecting. Finally, the near-seabed multi-parameter integrated detection is completed.
The technical scheme adopted by the invention for realizing the purpose is as follows: a deep sea near-seabed multi-parameter integrated detection device is connected with an ROV system and comprises: the underwater water quality monitoring system comprises a two-position three-way valve, an underwater control unit, an electric control two-position three-way valve, a water suction pump, a fluid sampling device, a sensor group A, a sensor group B, a micro-electrical-level data acquisition device, a water body acquisition device and a peristaltic pump, wherein the electric control two-position three-way valve, the water suction pump, the fluid sampling device, the sensor group;
one end of the water body acquisition device is used for sampling, the other end of the water body acquisition device is respectively connected with the sensor assembly A and the electric control two-position three-way valve through a two-position three-way valve, one outlet of the electric control two-position three-way valve is sequentially connected with the peristaltic pump through a micro-electrical data acquisition device and a sensor assembly B through a drainage pipeline, and the other outlet of the electric control two-position three-way valve is connected with the fluid; the water suction pump is connected with the sensor group A.
The sensor group a includes: the device comprises a temperature sensor water inlet device, a conductivity sensor water inlet device, a temperature sensor, a conductivity sensor and a dissolved oxygen sensor;
the temperature sensor water inlet device is provided with a water inlet and a water outlet, and is connected with the bottom of the temperature sensor, so that a probe of the temperature sensor is arranged in the temperature sensor water inlet device to measure the temperature of fluid;
the water inlet of the temperature sensor water inlet device is connected with the two-position three-way valve, and the water outlet of the temperature sensor water inlet device is connected with the conductivity sensor through the conductivity sensor water inlet device so as to measure the conductivity of the fluid; the conductivity sensor is connected with the dissolved oxygen sensor through a water inlet of the two-way valve, the other water inlet of the two-way valve is connected with the water suction pump through a branch pipeline of the three-way pipe, and the other branch pipeline of the three-way pipe is used for discharging residual gas in the pipeline; the fluid enters the water suction pump through a three-way pipe and flows out of the outflow port of the water suction pump into the seawater.
The micro-electric level data acquisition device comprises: the system comprises a micro-electric-level controller, a plurality of micro-electric-level amplifiers, a plurality of micro-collecting micro-electric-level probes and a plurality of micro-electric-level detection cabins; the micro-electric level controller is connected with the underwater control unit through a cable;
each micro-electrode detection cabin is provided with a micro-electrode water inlet and a micro-electrode water outlet, and the micro-electrode water outlet is connected with the micro-electrode water inlet of the next micro-electrode detection cabin to form a passage; a micro-level water inlet of the first micro-level detection cabin is connected with an electric control two-position three-way valve through a micro-level input pipe, and a micro-level water outlet on the tail end micro-level detection cabin is connected with a sensor group B;
the acquisition micro-electrode probes are vertically downwards inserted into the micro-electrode detection cabin and are connected with the corresponding micro-electrode amplifiers; the micro-scale amplifiers are arranged in parallel and are connected with the micro-scale controller;
the micro-electrode controller is used for collecting the PH and H measured by the micro-electrode probe through the micro-electrode amplifier in real time2S、H2、N2O, NO, and storing and transmitting the parameter data to the underwater control unit.
The sensor group B includes: methane sensor and CO connected in series2A sensor;
the methane sensor and CO2The sensors are respectively provided with a sensor water inlet, a sensor filtering channel, a sensor filtering membrane and a sensor water outlet;
one end of a sensor water inlet of the methane sensor is connected with a micro-electrode water outlet on a micro-electrode detection cabin at the tail end of the micro-electrode data acquisition device;
when fluid enters a sensor water inlet of the methane sensor, the fluid passes through a sensor filtering membrane channel sensor filtering membrane in sequence, and flows through CO again after the sensor water outlet2The sensor water inlet of the sensor sequentially passes through the sensor filtering membrane channel sensor filtering membrane and the sensor water outlet and is finally connected with the peristaltic pump through a drainage pipeline.
The water body acquisition device is a water suction pipe with a water suction pipe head; the water suction pipe is a titanium alloy water suction pipe.
The water body obtaining device further comprises a temperature probe, an expansion water suction pipe and a probe temperature sensor, wherein the temperature probe is attached to the inner wall of the expansion water suction pipe, the probe temperature sensor is arranged on the expansion water suction pipe corresponding to the outer wall of the temperature probe, the probe temperature sensor is connected with the underwater control unit and used for collecting temperature data of the expansion water suction pipe, and when a sample water body is higher than a set temperature, the water body obtaining device is replaced by the temperature probe, the expansion water suction pipe and the probe temperature sensor.
The fluid sampling device comprises: the device comprises a deep sea stepping motor, a fluid sampling steel cylinder assembly, a nine-way valve, a titanium alloy communication pipeline, a fixed rigid body, a sampler fixing plate, a rotating rigid body, a right-angle through hole and a quick-pass joint;
the device comprises a sampler fixing plate, a deep sea stepping motor, a nine-way valve, a fixed rigid body and a fluid sampling steel cylinder assembly, wherein the nine-way valve, the fixed rigid body and the fluid sampling steel cylinder assembly are respectively arranged on the sampler fixing plate, the output end of the deep sea stepping motor is connected with a rotating shaft of the nine-way valve through a coupler, the rotating rigid body is rotatably arranged in the fixed rigid body and is linked with the deep sea stepping motor through the rotating shaft of the nine-way valve; a plurality of nine-way valve outlets are uniformly distributed on the side wall of the fixed rigid body along the circumferential direction, and each nine-way valve outlet is communicated with a fluid sampling steel cylinder component; the deep sea stepping motor drives the rotating rigid body to rotate, one end of the right-angle through hole is communicated with a vertical large-caliber opening of a nine-way valve arranged on the fixed rigid body, and the other end of the right-angle through hole is sequentially communicated with outlets of the nine-way valves in the rotating process of the rotating rigid body;
each quick-pass joint is connected with the quick-pass joint in a sealing way in the outlet of each nine-way valve, and each quick-pass joint is connected with the quick-pass joint on one fluid sampling steel cylinder assembly through a titanium alloy communication pipeline;
the nine-way valve vertical large-caliber opening is connected with the outlet of each nine-way valve in a steering way through a right-angle through hole formed in the rotating rigid body, and the nine-way valve vertical large-caliber opening is formed in the bottom surface of the fixed rigid body;
the nine-way valve is connected with the electric control two-position three-way valve through a water body acquisition pipeline and a vertical large-caliber opening.
The fluid sampling cylinder assembly comprises: a fluid sampling steel cylinder, a needle valve A and a needle valve arranged at openings at two ends of the fluid sampling steel cylinder; when sampling is started, opening a needle valve A and closing a needle valve B at a deck position; after sampling, the needle valve A is closed by recovering the deck, and the fluid sampling steel cylinder is taken down and discharged for use through the needle valve B.
And a T-shaped handle is further welded on the two-position three-way valve, so that the ROV manipulator can grab the T-shaped handle to drive the water body acquisition device to be conveyed to a sampling position.
A detection method of a deep sea near-seabed multi-parameter integrated detection device comprises the following steps:
1) vacuumizing a plurality of fluid sampling steel cylinders in advance, opening a needle valve A, closing a needle valve B, and carrying a deep sea near-seabed multi-parameter integrated detection device to a seabed position of a sampling position by using an ROV (remote operated vehicle);
2) a temperature sensor, a dissolved oxygen sensor, a conductivity sensor, a water absorption pump, a micro-level controller, a methane sensor and CO controlled by the control unit are set2The running sequence and running time of the sensor, the peristaltic pump, the deep sea stepping motor and the probe temperature sensor;
3) the ROV manipulator is used for grabbing the T handle, so that the water suction pipe head on the water body acquisition device reaches a sampling point, and the ROV starts the water suction pump and the water suction pump through the control unitThe peristaltic pump, external water body of the same kind loops through the water suction pipe head, the pipe absorbs water, two-position three-way valve, temperature sensor income water installation, conductivity sensor income water installation, dissolved oxygen sensor gets into to the water suction pump, from the pump discharge outlet that absorbs water, outside the eduction gear, the second water body loops through the water suction pipe head, the pipe absorbs water, two-position three-way valve, automatically controlled two-position three-way valve, little electric level input tube, little electric level water inlet, little electric level detection cabin, little electric level delivery port, and loop through a plurality of little electric level detection positions, get into methane sensor's sensor water inlet, sensor filtration passageway2A sensor water inlet of the sensor and a sensor filtering channel enter a drainage pipeline and are driven by a peristaltic pump;
4) each sensor works in the water flowing process, the underwater control unit collects data and transmits the data to the ROV system to be transmitted to a shore base in real time for data storage, and meanwhile, the underwater control unit also stores a part of data;
5) judging whether the sampling and detecting area is an area with temperature gradient change exceeding a set threshold value in advance, if so, replacing the water suction pipe with a temperature probe and an expansion water suction pipe, and acquiring the temperature condition close to a water suction port by using a probe temperature sensor;
6) after a period of time, when water sampling is carried out, the control unit controls the electric control two-position three-way valve to be started, the water sequentially passes through the water acquisition pipeline, the deep sea stepping motor drives the nine-way valve to vertically communicate with the outlet of the nine-way valve through the large-caliber opening, and the water sequentially passes through the titanium alloy communication pipeline, the quick-acting joint, the needle valve A and the fluid sampling steel cylinder to complete sample sampling.
The invention has the following beneficial effects and advantages:
the invention integrates multi-parameter sensors at home and abroad, and can detect the hydrocarbon leakage of the chemical synthetic biocenosis under the seabed environmental condition by combining the geochemical measurement of the fluid. And the device integrated level is high, the parameter is surveyed a lot, can carry out the water sample simultaneously, long-time controllable, flexible operation is stable, simultaneously can the exclusive use, also can use with the ROV cooperation.
Drawings
FIG. 1 is a schematic diagram of the operation of the present invention;
FIG. 2 is a schematic overall structure diagram of the deep sea near-seabed multi-parameter integrated detection device and method of the present invention;
FIG. 3 is a schematic view of the structure and connection relationship of the sensor group A according to the present invention;
FIG. 4 is a schematic diagram of the micro-electrical data acquisition device shown in FIG. 2;
FIG. 5 is a schematic structural diagram of the electrically controlled two-position three-way valve of FIG. 2;
FIG. 6 is a schematic view of the fluid sampling apparatus of FIG. 2;
FIG. 7 is a schematic diagram of the nine-way valve arrangement of FIG. 2;
FIG. 8 shows the methane/CO ratio of FIG. 22The structure of the sensor is shown schematically;
FIG. 9 is a schematic view of the peristaltic pump of the present invention;
wherein: 1 is a water suction pipe head, 2 is a water suction pipe, 3 is a T handle, 4 is a two-position three-way valve, 5 is a temperature sensor water inlet device, 6 is an electric control two-position three-way valve inlet, 7 is a conductivity sensor water inlet device, 8 is a temperature sensor, 9 is a dissolved oxygen sensor, 10 is a conductivity sensor, 11 is a water suction pump, 12 is a water suction pump water outlet, 13 is an electric control two-position three-way valve, 14 is an electric control two-position three-way valve water outlet A, 15 is an electric control two-position three-way valve water outlet B, 16 is a micro-electrode input pipe, 17 is a micro-electrode water inlet, 18 is a micro-electrode detection cabin, 19 is a micro-electrode water outlet, 20 is a micro-electrode probe, 21 is a micro-electrode amplifier, 22 is a micro-electrode controller, 23 is a methane sensor, 24 is a sensor water inlet, 25 is a sensor filtering channel2The sensor comprises a water discharge pipeline 29, a peristaltic pump head 30, a water acquisition pipeline 31, a nine-way valve vertical large-caliber opening 32, a titanium alloy communicating pipeline 33, a quick-pass joint 34, a needle valve A35, a fluid sampling steel cylinder 36, a needle valve B37, a nine-way valve outlet 38, a deep sea stepping motor 39, a peristaltic pump pressure plate 41, a peristaltic pump water passing pipe 42, a peristaltic pump roller 43, a peristaltic pump 44, a peristaltic pump bolt 45, a peristaltic pump spring 46 and an underwater control 47The system unit is 48 cables, 49 an ROV system, 50 a temperature probe, 51 a probe temperature sensor, 52 a nine-way valve, 53 a nine-way valve rotating shaft, 54 an expansion suction pipe, 55 a fixed rigid body, 56 a sampler fixing plate, 57 a rotating rigid body and 58 a right-angle through hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The temperature sensor water inlet device 5, the conductivity sensor water inlet device 7, the micro-electrode input pipe 16, the sensor water inlet 24, the sensor water outlet 27 and the connecting hoses among the drainage pipelines 29 are all produced by saint-gobain, France.
The water suction pipe 2, the electric control two-position three-way valve 13, the nine-way valve 52, the titanium alloy communication pipeline 33, the quick-pass joint 34, the needle valve A35, the fluid sampling steel cylinder 36 and the needle valve B37 are processed by titanium alloy, so that the pollution of samples is avoided.
As shown in fig. 2, the overall structure of the present invention is schematically illustrated, and the present invention includes: the device comprises a two-position three-way valve 4, an underwater control unit 47, an electric control two-position three-way valve 13 connected with the underwater control unit, a water suction pump 11, a fluid sampling device, a sensor group A, a sensor group B, a micro-electrical data acquisition device, a water body acquisition device and a peristaltic pump 44;
as shown in fig. 3 and 5, which are connection relationship diagrams of the sensor group a of the present invention, one end of the water body obtaining device is used for sampling, the other end is connected with the sensor assembly a and the electrically controlled two-position three-way valve 13 through the two-position three-way valve 4, one outlet of the electrically controlled two-position three-way valve 13 is connected with the peristaltic pump 44 through the micro-electrical data collecting device and the sensor assembly B in sequence, and the other outlet is connected with the fluid sampling device; the water suction pump 11 is connected with the sensor group A.
The sensor group a includes: the system comprises a temperature sensor water inlet device 5, a conductivity sensor water inlet device 7, a temperature sensor 8, a conductivity sensor 10 and a dissolved oxygen sensor 9;
the temperature sensor water inlet device 5 is provided with a water inlet and a water outlet, the temperature sensor water inlet device 5 is connected with the bottom of the temperature sensor 8, and a probe of the temperature sensor 8 is arranged in the temperature sensor water inlet device 5 to measure the temperature of the fluid;
the water inlet of the temperature sensor water inlet device 5 is connected with the two-position three-way valve 4, and the water outlet is connected with the conductivity sensor 10 through the conductivity sensor water inlet device 7 so as to measure the conductivity of the fluid; the conductivity sensor 10 is connected with the dissolved oxygen sensor 9 through a water inlet of a two-way valve, the other water inlet of the two-way valve is connected with the water suction pump 11 through a branch pipeline of a three-way pipe, and the other branch pipeline of the three-way pipe is used for discharging residual gas in the pipeline; the fluid enters the suction pump 11 through a tee pipe and flows out of the suction pump outlet 12 into the seawater.
The CTD sensor is composed of an SBE25 temperature sensor, an SBE25 conductivity sensor and an SBE 43 dissolved oxygen sensor, and is a sensor product purchased from the company seabond. The micro-electric level sensor is completed by modifying a water sediment interface research system of Unisense in Denmark. Methane and CO2The sensor was purchased from cont ros in germany and modified.
As shown in fig. 4, which is a schematic structural diagram of the micro-electrical data acquisition device of the present invention, a micro-electrical controller 22, a plurality of micro-electrical amplifiers 21, a plurality of acquisition micro-electrical probes 20, and a plurality of micro-electrical detection chambers 18; the micro-electric level controller 22 is connected with the underwater control unit 47 through a cable;
each micro-electrode detection cabin 18 is provided with a micro-electrode water inlet 17 and a micro-electrode water outlet 19, and the micro-electrode water outlet 19 is connected with the micro-electrode water inlet 17 of the next micro-electrode detection cabin 18 to form a passage; a micro-level water inlet 17 of the first micro-level detection cabin 18 is connected with an electric control two-position three-way valve 13 through a micro-level input pipe 16, and a micro-level water outlet 19 on the tail end micro-level detection cabin 18 is connected with a sensor group B;
the acquisition micro-electrode probes 20 are vertically downwards inserted into the micro-electrode detection cabin 18, and the acquisition micro-electrode probes 20 are connected with the corresponding micro-electrode amplifiers 21; a plurality of micro-scale amplifiers 21 are arranged in parallel and are connected with a micro-scale controller 22; a micro-electrode controller 22 for collecting the pH and H measured by the micro-electrode probe 20 via the micro-electrode amplifier 21 in real time2S、H2、N2O, NO, and storing and transmitting the parameter data to the underwater control unit.
As shown in FIG. 8, for the methane sensor or CO in the sensor group B2The structure of the sensor is schematically shown, and the sensor group B comprises: methane sensor 23 and CO connected in series2A sensor 28;
one end of a sensor water inlet 24 of the methane sensor 23 is connected with a micro-electric water outlet 19 on a micro-electric detection cabin 18 at the tail end of the micro-electric data acquisition device;
when entering the sensor water inlet 24 of the methane sensor 23, the fluid passes through the sensor filter membrane 26 of the sensor filter membrane channel 25 and the sensor water outlet 27 in sequence and then flows through the CO again2The sensor water inlet 24 of the sensor 28 sequentially passes through the sensor filtering membrane channel 25, the sensor filtering membrane 26 and the sensor water outlet 27, and is finally connected with the peristaltic pump 44 through the drainage pipeline 29.
FIG. 9 is a schematic view of the peristaltic pump of the present invention; the working principle is as follows: the peristaltic pump forms a "pillow" of fluid through a section of pump tubing between the rollers and the peristaltic pump platen 41. The volume of the "pillow" depends on the inner diameter of the pump tube and the geometry of the rotor. The flow rate depends on the product of the rotation speed of the pump head and the three parameters of the size of the pillow and the number of pillows generated by each rotation of the rotor.
The water body obtaining device is a water suction pipe 2 with a water suction pipe head 1; the water suction pipe 2 is a titanium alloy water suction pipe.
The water body obtaining device further comprises a temperature probe 50, an expansion water suction pipe 54 and a probe temperature sensor 51, wherein the temperature probe 50 is attached to the inner wall of the expansion water suction pipe 54, the probe temperature sensor 51 is arranged on the expansion water suction pipe 54 corresponding to the outer wall of the temperature probe 50, the probe temperature sensor 51 is connected with the underwater control unit and used for collecting temperature data of the expansion water suction pipe 54, and when a sampled water body is higher than a set temperature, the water body obtaining device is replaced by the temperature probe 50, the expansion water suction pipe 54 and the probe temperature sensor 51.
Regarding the fluid collecting device, the principle utilizes the multi-way valve body mechanism (patent number CN201721825165.8) of the ROV-based deep sea fluid fidelity sampler to obtain the water body sample.
As shown in fig. 6 and 7, the fluid sampling device and the nine-way valve are respectively a schematic structural diagram, the nine-way valve has a 1-in 8-out function, the nine-way valve has a main inlet of the vertical large-caliber opening 32, an outlet 38 of the nine-way valve is an outlet of an 8-way, the deep sea stepping motor 39 is connected with a rotating shaft 53 of the nine-way valve by a coupler, and the nine-way valve 52 is switched on and off by stepping rotation of the deep sea stepping motor 39.
The underwater control unit 47 controls the temperature sensor 8, the dissolved oxygen sensor 9, the conductivity sensor 10, the water absorption pump 11, the micro-level controller 22, the methane sensor 23 and the CO2The sensor 28, the peristaltic pump 44, the deep sea stepping motor 39 and the probe temperature sensor 51 are used for controlling, communicating, supplying power, collecting and storing data.
And the two-position three-way valve 4 is also welded with a T-shaped handle 3 so that the ROV manipulator can grab the T-shaped handle 3 to drive the water body acquisition device to be conveyed to a sampling position. The ROV uses a robot to grab the T-handle 3 and place the suction nozzle head 1 to the sub-sea sampling area to complete the sampling. The device can be arranged on an ROV body or used independently, and when the device is arranged on the ROV body, the control unit 47 is connected with an ROV system 49 to carry out data communication and control. When the device is used independently, the control unit 47 can perform data collection and sample acquisition by using time setting.
As shown in fig. 1-2, in combination with the detection method of the device of the present invention, the device of the present invention is composed of an underwater control unit 47, a sensor group a, a sensor group B, a water body acquisition device, a fluid sampling device, a micro-electrical data acquisition device, and a water suction pump 11. The front end of the water suction pipe 2 is a water suction pipe head 1, the rear end of the titanium alloy water suction pipe 2 is connected with a two-position three-way valve 4, one end of the water suction pipe is communicated with a temperature sensor water inlet device 5, one end of the water suction pipe is communicated with an electric control two-position three-way valve inlet 6 of an electric control two-position three-way valve 13, a T handle 3 is welded at the upper end of the two-position three-way valve 4, the upper end of the temperature sensor water inlet device 5The upper ends of the sensor 10, the temperature sensor 8 and the conductivity sensor 10 are connected with the dissolved oxygen sensor 9 through pipelines, and the dissolved oxygen sensor 9 is connected with the water suction pump 11 through a three-way pipe. The other two ends of the electric control two-position three-way valve 13 are an electric control two-position three-way valve water outlet A14 and an electric control two-position three-way valve water outlet B15, the electric control two-position three-way valve water outlet A14 is connected with the micro-electrode input pipe 16, the micro-electrode water inlet 17 is positioned at the lower end of the micro-electrode detection cabin 18 and internally stores the micro-electrode probe 20, the micro-electrode water outlet 19 is positioned at the upper end of the micro-electrode detection cabin 18, the upper end of the micro-electrode probe 20 is directly connected with the micro-electrode amplifier 21, the micro-electrode amplifier 21 is connected with the micro-electrode controller 22 through a cable, the micro-electrode probe passes through 8 micro-electrode detection cabins 18 and then is connected with the methane sensor water inlet 24 through a pipeline to enter the sensor filter2Sensor 28 connected, CO2The rear end of the sensor 28 is connected with a water discharge pipeline 29, and the rear end of the water discharge pipeline 29 is directly connected with a peristaltic pump head 30 of a peristaltic pump 44. The water outlet B15 of the electric control two-position three-way valve is connected with the water obtaining pipeline 31, the other end of the water obtaining pipeline 31 is connected with the nine-way valve vertical large-caliber opening 32 through threads, the side end of the nine-way valve 52 is connected with the titanium alloy communicating pipeline 33 through the outlet 38 of the nine-way valve through threads, and the rear end of the titanium alloy communicating pipeline 33 is sequentially connected with the quick-pass joint 34, the needle valve A35, the fluid sampling steel cylinder 36 and the needle valve B37 through threads.
The nine-way valve vertical large-caliber opening 32 is a main inlet, the nine-way valve outlet 38 is an 8-way outlet, the deep sea stepping motor 39 is connected with the nine-way valve rotating shaft 53 through a coupler, and the nine-way valve is switched on and off through stepping rotation of the deep sea stepping motor 39.
When the suction pipe 2 needs to be replaced by the temperature probe 50 and the extended suction pipe 54 in an area with large temperature gradient change, the temperature condition of the near suction port is collected by the probe temperature sensor 51.
Example 1:
firstly, integrally disassembling and cleaning a shore-based end; the whole deep sea near-seabed multi-parameter integrated detection device is decomposed and disassembled, and then is cleaned;
and step two, cleaning and assembling, vacuumizing 8 fluid sampling steel cylinders 36 in advance, opening a needle valve A35, closing a needle valve B37, and carrying the device to the deep sea bottom by using an ROV or a deep sea sample shuttle system (ELEVATOR).
Step three, using an ROV to carry a deep sea near seabed multi-parameter integrated detection device to arrive at a station, using an ROV manipulator to grab a T handle 3, enabling a water suction pipe head 1 to arrive at a sampling point, starting a water suction pump 11 and a peristaltic pump 44 by the ROV through a control unit 47, enabling one path of external water to sequentially pass through the water suction pipe head 1, a water suction pipe 2, a two-position three-way valve 4, a temperature sensor water inlet device 5, a conductivity sensor water inlet device 7, a dissolved oxygen sensor 9, the water suction pump 11, a water outlet 12 of the water suction pump, and a discharge device, enabling the second path of water to sequentially pass through the water suction pipe head 1, the water suction pipe 2, the two-position three-way valve 4, an electric control two-position three-way valve inlet 6, an electric control two-position three-way valve water outlet A14, a micro-level input pipe 16, a micro-level, methane sensor filter channel 25, methane sensor water outlet 27, into CO2Sensor filter channel 25 of sensor 28, sensor filter membrane 26, sensor water outlet 27, and then into drain line 29, the driving force of which is accomplished by peristaltic pump 44. During the water flowing process, each sensor works, the underwater control unit 47 performs data acquisition and transmits the data to the ROV system 49 to be transmitted to the shore base in real time for data storage, and meanwhile, the underwater control unit 47 also stores a piece of data. During operation, the peristaltic pump 44 is operated at a speed of about 50 revolutions.
The sampling and detecting area is judged in advance whether the temperature gradient change is large or not, if the temperature probe 50 and the extended suction pipe 54 are needed to replace the suction pipe 2, the probe temperature sensor 51 is used for collecting the temperature condition of the near suction port.
If the deep sea sample shuttle transport system (ELEVATOR) is used for carrying the device to the deep sea bottom, the temperature sensor 8, the dissolved oxygen sensor 9, the conductivity sensor 10, the water suction pump 11 and the micro-electric level controller 22 controlled by the underwater control unit 47 are set in advance in the step twoMethane sensor 23, CO2The sequence and duration of operation of the sensor 28, peristaltic pump 44, deep sea stepper motor 39, probe temperature sensor 51.
After a period of time, when water sampling is carried out, the underwater control unit 47 controls the electric control two-position three-way valve 13 to be started, the water sequentially passes through the water obtaining pipeline 31, the deep sea stepping motor joint 40 rotates to drive the nine-way valve to be communicated with the nine-way valve outlet 38 through the vertical large-caliber opening 32, and the water sequentially passes through the titanium alloy communicating pipeline 33, the quick-pass joint 34, the needle valve A35 and the fluid sampling steel cylinder 36 to finish sample sampling.
And fifthly, carrying the device to an onboard deck of a ship by using an ROV or deep sea sample shuttle transport system (ELEVATOR), disassembling the water body acquisition device, firstly closing the needle valve A35 to complete sample sealing, sequentially disassembling 8 needle valves A35 to complete sample sealing, and integrally disassembling the needle valve A35, the fluid sampling steel cylinder 36 and the needle valve B37.
The invention integrates multi-parameter sensors at home and abroad, breaks through CTD, dissolved oxygen, methane, carbon dioxide, PH and H2S、H2、N2O, NO parameter in-situ detection, solves the problem of in-situ fidelity sampling while detecting, and finally completes near-seabed multi-parameter integrated detection. And the device integrated level is high, the parameter is surveyed a lot, can carry out the water sample simultaneously, long-time controllable, flexible operation is stable, simultaneously can the exclusive use, also can use with the ROV cooperation.
Claims (10)
1. A deep sea near-seabed multi-parameter integrated detection device is connected with an ROV system, and is characterized by comprising: the device comprises a two-position three-way valve (4), an underwater control unit (47), an electric control two-position three-way valve (13) connected with the underwater control unit, a water suction pump (11), a fluid sampling device, a sensor group A, a sensor group B, a micro-electrical data acquisition device, a water body acquisition device and a peristaltic pump (44);
one end of the water body acquisition device is used for sampling, the other end of the water body acquisition device is respectively connected with the sensor assembly A and the electric control two-position three-way valve (13) through the two-position three-way valve (4), one outlet of the electric control two-position three-way valve (13) is sequentially connected with the peristaltic pump (44) through the micro-electrical data acquisition device and the sensor assembly B through the drainage pipeline (29), and the other outlet is connected with the fluid sampling device; the water suction pump (11) is connected with the sensor group A.
2. The deep sea near-sea floor multi-parameter integrated detection device according to claim 1, wherein the sensor group A comprises: a temperature sensor water inlet device (5), a conductivity sensor water inlet device (7), a temperature sensor (8), a conductivity sensor (10) and a dissolved oxygen sensor (9);
the temperature sensor water inlet device (5) is provided with a water inlet and a water outlet, the temperature sensor water inlet device (5) is connected with the bottom of the temperature sensor (8), and a probe of the temperature sensor (8) is arranged in the temperature sensor water inlet device (5) to measure the temperature of fluid;
the water inlet of the temperature sensor water inlet device (5) is connected with the two-position three-way valve (4), and the water outlet is connected with the conductivity sensor (10) through the conductivity sensor water inlet device (7) to measure the conductivity of the fluid; the conductivity sensor (10) is connected with the dissolved oxygen sensor (9) through a water inlet of the two-way valve, the other water inlet of the two-way valve is connected with the water suction pump (11) through a branch pipeline of the three-way pipe, and the other branch pipeline of the three-way pipe is used for discharging residual gas in the pipeline; the fluid enters the water suction pump (11) through a three-way pipe and flows out of the water suction pump outlet (12) into seawater.
3. The deep sea near-sea floor multi-parameter integrated detection device according to claim 1, wherein the micro-electrical-level data acquisition device comprises: the system comprises a micro-level controller (22), a plurality of micro-level amplifiers (21), a plurality of micro-level acquisition probes (20) and a plurality of micro-level detection cabins (18); the micro-electric level controller (22) is connected with the underwater control unit (47) through a cable;
each micro-electrode detection cabin (18) is provided with a micro-electrode water inlet (17) and a micro-electrode water outlet (19), and the micro-electrode water outlet (19) is connected with the micro-electrode water inlet (17) of the next micro-electrode detection cabin (18) to form a passage; a micro-level water inlet (17) of the first micro-level detection cabin (18) is connected with an electric control two-position three-way valve (13) through a micro-level input pipe (16), and a micro-level water outlet (19) on the tail end micro-level detection cabin (18) is connected with a sensor group B;
the acquisition micro-electrode probes (20) are vertically downwards inserted into the micro-electrode detection cabin (18), and the acquisition micro-electrode probes (20) are connected with corresponding micro-electrode amplifiers (21); the micro-scale amplifiers (21) are arranged in parallel and are connected with the micro-scale controller (22);
the micro-electrode controller (22) is used for collecting the PH and H measured by the micro-electrode probe (20) through the micro-electrode amplifier (21) in real time2S、H2、N2O, NO, and storing and transmitting the parameter data to the underwater control unit (47).
4. The deep sea near-sea floor multi-parameter integrated detection device according to claim 1, wherein the sensor group B comprises: a methane sensor (23) and CO connected in series2A sensor (28);
the methane sensor (23) and CO2The sensors (28) are respectively provided with a sensor water inlet (24), a sensor filtering channel (25), a sensor filtering membrane (26) and a sensor water outlet (27);
one end of a sensor water inlet (24) of the methane sensor (23) is connected with a micro-electrode water outlet (19) on a micro-electrode detection cabin (18) at the tail end of the micro-electrode data acquisition device;
when entering a sensor water inlet (24) of the methane sensor (23), the fluid flows through a CO again after sequentially passing through a sensor filtering membrane channel (25), a sensor filtering membrane (26) and a sensor water outlet (27)2A sensor water inlet (24) of the sensor (28) sequentially passes through a sensor filtering membrane channel (25), a sensor filtering membrane (26) and a sensor water outlet (27) and is finally connected with a peristaltic pump (44) through a drainage pipeline (29).
5. The deep sea near-seabed multi-parameter integrated detection device according to claim 1, wherein the water body acquisition device is a suction pipe (2) with a suction pipe head (1); the water suction pipe (2) is a titanium alloy water suction pipe.
6. The deep sea near-seabed multi-parameter integrated detection device according to claim 1 or 5, wherein the water body acquisition device further comprises a temperature probe (50), an expansion suction pipe (54) and a probe temperature sensor (51), the temperature probe (50) is attached to the inner wall of the expansion suction pipe (54), the probe temperature sensor (51) is arranged on the expansion suction pipe (54) corresponding to the outer wall of the temperature probe (50), and the probe temperature sensor (51) is connected with the underwater control unit (47) and used for collecting temperature data of the expansion suction pipe (54), and when the sampled water body is higher than a set temperature, the water body acquisition device is replaced by the temperature probe (50), the expansion suction pipe (54) and the probe temperature sensor (51).
7. The deep sea near-sea floor multi-parameter integrated probe according to claim 1, wherein the fluid sampling device comprises: the device comprises a deep sea stepping motor (39), a fluid sampling steel cylinder assembly, a nine-way valve (52), a titanium alloy communication pipeline (33), a fixed rigid body (55), a sampler fixing plate (56), a rotating rigid body (57), a right-angle through hole (58) and a quick-pass joint (34);
the device comprises a sampler fixing plate (56), a nine-way valve (52), a fixed rigid body (55) and a fluid sampling steel cylinder assembly, wherein the nine-way valve, the fixed rigid body (55) and the fluid sampling steel cylinder assembly are respectively arranged on the sampler fixing plate (56), the output end of the deep sea stepping motor (39) is connected with a rotating shaft (53) of the nine-way valve through a coupler, a rotating rigid body (57) is rotatably arranged in the fixed rigid body (55) and is linked with the deep sea stepping motor (39) through the rotating shaft (53) of the nine-way valve, and a right-angle; a plurality of nine-way valve outlets (38) are uniformly distributed on the side wall of the fixed rigid body (55) along the circumferential direction, and each nine-way valve outlet (38) is communicated with a fluid sampling steel cylinder component; the deep sea stepping motor (39) drives the rotating rigid body (57) to rotate, one end of the right-angle through hole (58) is communicated with a nine-way valve vertical large-caliber opening (32) formed in the fixed rigid body (55), and the other end of the right-angle through hole is sequentially communicated with outlets (38) of the nine-way valves in the rotating process of the rotating rigid body (57);
a quick-pass joint (34) is hermetically connected in each nine-way valve outlet (38), and each quick-pass joint (34) is respectively connected with the quick-pass joint (34) on one fluid sampling steel cylinder assembly through a titanium alloy communication pipeline (33);
the nine-way valve vertical large-caliber opening (32) is connected with the outlet (38) of each nine-way valve in a steering way through a right-angle through hole (58) formed in the rotating rigid body (57), and the nine-way valve vertical large-caliber opening (32) is formed in the bottom surface of the fixed rigid body (55);
the nine-way valve vertical large-caliber opening (32) is connected with the electric control two-position three-way valve (13) through a water body acquisition pipeline (31).
8. The deep sea near-sea floor multi-parameter integrated probe according to claim 7, wherein the fluid sampling cylinder assembly comprises: a fluid sampling cylinder (36), and a needle valve A (35) and a needle valve B (37) which are arranged at two ends of the fluid sampling cylinder and are opened; when sampling is started, in the deck position, a needle valve A (35) is opened, and a needle valve B (37) is closed; after sampling, the sample is recovered to the deck, needle valve A (35) is closed, and the fluid sampling cylinder (36) is removed and discharged through needle valve B (37) for use.
9. The deep sea near-seabed multi-parameter integrated detection device according to claim 1, wherein a T-shaped handle (3) is welded on the two-position three-way valve (4) so that an ROV (RoV) can grab the T-shaped handle (3) to drive the water body acquisition device to be conveyed to a sampling place.
10. The detection method of the deep sea near-seabed multi-parameter integrated detection device according to claims 1 to 9, characterized by comprising the following steps:
1) vacuumizing a plurality of fluid sampling steel cylinders (36) in advance, opening a needle valve A (35), closing a needle valve B (37), and carrying the deep sea near-seabed multi-parameter integrated detection device to a seabed position of a sampling position by using an ROV;
2) a temperature sensor (8), a dissolved oxygen sensor (9), a conductivity sensor (10), a water absorption pump (11), a micro-level controller (22), a methane sensor (23), CO controlled by a control unit (47) are set2A sensor (28), a peristaltic pump (44), a deep sea stepper motor (39)The operating sequence and operating time of the probe temperature sensor (51);
3) the method comprises the steps that an ROV manipulator is used for grabbing a T handle (3), so that a water suction pipe head (1) on a water body acquisition device reaches a sampling point, the ROV starts a water suction pump (11) and a peristaltic pump (44) through a control unit (47), one path of external water body sequentially passes through the water suction pipe head (1), a water suction pipe (2), a two-position three-way valve (4), a temperature sensor water inlet device (5), a conductivity sensor water inlet device (7), a dissolved oxygen sensor (9) enters the water suction pump (11), an outflow port (12) of the water suction pump and is discharged out of the device, a second path of water body sequentially passes through the water suction pipe head (1), the water suction pipe (2), the two-position three-way valve (4), an electric control two-position three-way valve (6), an electric control two-position three-way valve (13), a micro-level, Sequentially passes through a plurality of micro-electrode detection positions, enters a sensor water inlet (24) of a methane sensor (23), a sensor filtering channel (25) and a sensor water outlet (27), and then enters CO2A sensor water inlet (24) of the sensor (28), a sensor filtering channel (25) and then a drainage pipeline (29) are driven by a peristaltic pump (44) to complete the operation;
4) during the water flowing process, each sensor works, the underwater control unit (47) performs data acquisition and transmits the data to the ROV system (49) to be transmitted to a shore base in real time, data storage is performed, and meanwhile, the underwater control unit (47) also stores a piece of data;
5) judging whether the sampling and detecting area is an area with temperature gradient change exceeding a set threshold value in advance, if so, replacing the water suction pipe (2) with a temperature probe (50) and an expansion water suction pipe (54), and acquiring the temperature condition of a near water suction port by using a probe temperature sensor (51);
6) after a period of time, when water sampling is carried out, the control unit (47) controls the electric control two-position three-way valve (13) to be started, the water sequentially passes through the water acquisition pipeline (31), the deep sea stepping motor drives the nine-way valve to be communicated with the nine-way valve outlet (38) through the vertical large-caliber opening (32), and the water sequentially passes through the titanium alloy communication pipeline (33), the quick-acting joint (34), the needle valve A (35) and the fluid sampling steel cylinder (36) to complete sample sampling.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432641A (en) * | 2021-03-23 | 2021-09-24 | 浙江大学 | Be used for long-term multi-parameter monitoring devices of deep sea stratum |
| CN114166572A (en) * | 2021-10-29 | 2022-03-11 | 广州海洋地质调查局 | Multi-path seawater sample collection device |
| CN115628947A (en) * | 2022-12-20 | 2023-01-20 | 山东群鑫助剂有限公司 | Sampling device for methyl thioglycolate detection |
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- 2020-11-16 CN CN202011277243.1A patent/CN112325947A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432641A (en) * | 2021-03-23 | 2021-09-24 | 浙江大学 | Be used for long-term multi-parameter monitoring devices of deep sea stratum |
| CN114166572A (en) * | 2021-10-29 | 2022-03-11 | 广州海洋地质调查局 | Multi-path seawater sample collection device |
| CN115628947A (en) * | 2022-12-20 | 2023-01-20 | 山东群鑫助剂有限公司 | Sampling device for methyl thioglycolate detection |
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