CN116429471A - Deep sea sediment sampling device capable of simultaneously realizing time sequence sampling under multiple environmental conditions - Google Patents
Deep sea sediment sampling device capable of simultaneously realizing time sequence sampling under multiple environmental conditions Download PDFInfo
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- CN116429471A CN116429471A CN202310237253.XA CN202310237253A CN116429471A CN 116429471 A CN116429471 A CN 116429471A CN 202310237253 A CN202310237253 A CN 202310237253A CN 116429471 A CN116429471 A CN 116429471A
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- 238000005070 sampling Methods 0.000 title claims abstract description 154
- 239000013049 sediment Substances 0.000 title claims abstract description 14
- 230000007613 environmental effect Effects 0.000 title claims abstract description 9
- 238000003860 storage Methods 0.000 claims abstract description 66
- 238000011065 in-situ storage Methods 0.000 claims abstract description 60
- 238000002347 injection Methods 0.000 claims abstract description 22
- 239000007924 injection Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 20
- 239000004065 semiconductor Substances 0.000 claims description 20
- 238000012544 monitoring process Methods 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 12
- 239000002775 capsule Substances 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 9
- 230000033001 locomotion Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 3
- 239000000523 sample Substances 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 20
- 230000008569 process Effects 0.000 abstract description 17
- 238000004321 preservation Methods 0.000 abstract description 15
- 238000011084 recovery Methods 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000013068 control sample Substances 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 12
- 229910052799 carbon Inorganic materials 0.000 description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 239000013535 sea water Substances 0.000 description 10
- 108010066114 cabin-2 Proteins 0.000 description 9
- 238000011160 research Methods 0.000 description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- 239000001569 carbon dioxide Substances 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000033116 oxidation-reduction process Effects 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004177 carbon cycle Methods 0.000 description 1
- CENFDZCGCSCJDE-UHFFFAOYSA-N carbon dioxide;dihydrate Chemical class O.O.O=C=O CENFDZCGCSCJDE-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003334 potential effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a deep sea sampling technology, and aims to provide a deep sea sediment sampling device capable of simultaneously realizing time sequence sampling under multiple environmental conditions. The device comprises three in-situ sealed cabins and two injection modules, wherein the three in-situ sealed cabins and the two injection modules are arranged on a fixing device; a time sequence sampling module is arranged in the in-situ sealed cabin and at least comprises three groups of sampling units with the same structure; the sampling unit comprises an oil filling motor, a screw rod, and a plurality of groups of sampling cylinders and storage cylinders which are nested; the injection modules comprise oil filling motors, lead screws and storage cylinders, and each injection module corresponds to one in-situ sealed cabin and is respectively connected with the water sample storage space and the sample storage space through pressure hoses; a plurality of batteries are arranged in each in-situ sealed cabin and are used for supplying power to each motor. The invention can realize multi-environment condition and long-interval time sequence sampling and realize heat preservation in the recovery process of the device; the device can also obtain a control sample under the same sampling condition, and monitor the change of sample parameters in the sampling process.
Description
Technical Field
The invention relates to a deep sea sampling technology, in particular to a deep sea sediment sampling device for simultaneously realizing time sequence sampling under multiple environment conditions.
Background
Natural gas hydrate has high content and little pollution, and is spotlighted due to great energy potential and environmental effect. The natural gas hydrate can exist stably only under the conditions of low temperature and high pressure, and the change of the external environment is extremely easy to cause decomposition, so that methane leakage is caused. Thus, studying methane leakage at the sea water-sediment interface has important theoretical and practical implications for natural gas hydrate exploration. The current understanding of the carbon cycle pattern of subsea methane release, especially the complex physical-chemical-biological conversion laws of sea water-sediment interfacial methane, is unclear. Because the actual conditions of difficult entering and long period exist in deep sea observation, the method has a plurality of problems of high cost, large-scale instrument equipment operation and maintenance difficulty and the like in the case of large Fan Weiguan time.
Methane released by the decomposition of the sea floor hydrates, through complex bio-geochemical processes by way of emissions such as most typical cold spring activities, may rise in the form of bubbles or diffuse to the overlying water column. In addition, organic carbon and inorganic carbon in seawater can undergo carbon precipitation in various forms. In the deep sea carbon circulation flux calculation process, the content of the carbon circulation net flux of the sediment-seawater interface is involved. Thus, there is a need to provide carbon injection, carbon release and comparative reference conditions in an in situ environment for a sediment sample at the time of sample collection and preservation to determine the flux of carbon release and carbon absorption for the sediment sample. However, in the current published report, the contents of research results on deep sea sampling techniques under various reference conditions have not been found.
Therefore, a technology capable of continuously sampling in situ for a long period and monitoring chemical parameter changes on line in a deep sea carbon storage process is provided, which is necessary for researching the action mechanism of the carbon storage process in a deep sea environment.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and providing a deep sea sediment sampling device for simultaneously realizing time sequence sampling under multiple environmental conditions.
In order to solve the technical problems, the invention adopts the following solutions:
provided is a deep sea sediment sampling device for simultaneously realizing time sequence sampling under multiple environmental conditions, comprising: three in-situ sealed cabins and two injection modules which are arranged on the fixing device;
the in-situ sealed cabin is a hollow cavity with a sealed top end, and a cavity sealing plate is arranged at the opening end of the bottom; a time sequence sampling module is arranged in the cavity and at least comprises three groups of sampling units with the same structure; the sampling unit comprises an oil filling motor, a screw rod, and a plurality of groups of sampling cylinders and storage cylinders which are nested; the bottom opening end of each storage cylinder is embedded in a through hole on the cavity sealing plate, the upper part of each storage cylinder is provided with a piston, and the opening end is provided with a flap valve; a sampling tube is nested in each storage tube, the upper end of the sampling tube is fixed below the piston, and a sample storage space is formed in each sampling tube; the output end of the oil charge motor is connected to the piston rod through a screw rod, so that the sampling tube can be driven to vertically displace in the storage tube; a bolt motor matched with each sampling unit is arranged on the cavity sealing plate, and the output end of the bolt motor is connected to each flap valve through an action switching mechanism so as to realize valve opening and closing;
the injection module comprises an oil charge motor, a screw rod and a storage cylinder, wherein the storage cylinder is of a cylindrical structure with two closed ends and a piston arranged in the storage cylinder, and a water sample storage space is arranged below the piston; the shell of the oil charge motor is connected with the storage cylinder through a plurality of support rods, and an output shaft of the oil charge motor drives the piston to displace in the storage cylinder through a lead screw; each injection module corresponds to an in-situ sealed cabin and is respectively connected with the water sample storage space and the sample storage space through pressure hoses;
a plurality of batteries are arranged in each in-situ sealed cabin and are used for supplying power to each motor.
As a preferable mode of the invention, the fixing device is of a frame structure; the three in-situ sealed cabins are arranged in the frame structure in a triangle axial parallel mode, and the injection module is fixed on the frame structure.
As a preferable scheme of the invention, a T-shaped handle is arranged on the top end sealing cover of the in-situ sealed cabin.
As a preferable scheme of the invention, the action switching mechanism comprises a driving rod and bolts with the same number as that of the storage cylinders in the sampling unit; the plug pin motors are positioned on the cavity sealing plates in the centers of the sampling units, and the plug pins are in one-to-one correspondence with the storage cylinders and are arranged around the plug pin motors; traction springs are respectively arranged on the inner side and the outer side of the flap valve, and the latch is connected with the traction springs on the outer side to enable the flap valve to be kept in an open state.
As a preferred embodiment of the present invention, the battery for supplying power to the motors is directly provided in the housing of each motor.
As a preferred scheme of the invention, in each group of sampling units, the oil charge motor is matched with the nested structure of two sets of storage cylinders and sampling cylinders simultaneously: the lower end of the screw rod is fixed in the center of the screw rod connecting plate, and piston rods of the two sampling cylinders are fixedly connected to the two ends of the screw rod connecting plate, so that one oil-filled motor drives the sampling cylinders in the two storage cylinders simultaneously.
As a preferable scheme of the invention, the time sequence sampling module comprises a motor fixing plate, and the oil filling motors in the sampling units are all fixed on the motor fixing plate through a plurality of supporting rods; the screw rod is wrapped in the screw rod protective sleeve, and the screw rod are in clearance fit; the screw rod protective sleeve penetrates through the through hole in the motor fixing plate, and the screw rod protective sleeve and the through hole are in close fit.
As the preferable scheme of the invention, the device also comprises a plurality of semiconductor refrigerating sheets and a battery for supplying power to the semiconductor refrigerating sheets, and the semiconductor refrigerating sheets and the battery are connected through cables; the cold ends of the semiconductor refrigerating sheets are attached to the outer sides of the corresponding storage cylinders respectively, and the hot ends of the semiconductor refrigerating sheets are fixed to the outer sides of the in-situ sealed cabin.
As a preferable scheme of the invention, the top end of the in-situ sealed cabin is provided with a power supply driving control module and a monitoring signal acquisition module; the inside of the former comprises a battery and a singlechip, and is respectively connected with a sampling unit, an oil charge motor in the injection module, a battery and a bolt motor which are arranged in the in-situ sealed cabin through cables; the latter includes battery and singlechip inside to connect respectively through the cable and locate the multiparameter sensor in each sampling tube.
As a preferred embodiment of the invention, the device further comprises an accumulator with a built-in piston, which is connected to the interior of each in-situ capsule by means of a pressure hose.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention can realize the realization of multi-environment condition sampling.
The sampling device is provided with a plurality of sampling cylinders in three in-situ sealed cabins, so that an environment with higher carbon dioxide solubility than in-situ seawater can be formed in one in-situ sealed cabin, and an environment with lower carbon dioxide solubility than in-situ seawater can be formed in the other in-situ sealed cabin; the residual in-situ sealed cabin is used for preserving the sampling environment of in-situ seawater, and the original data can be monitored as a comparison.
(2) The invention can realize long-interval time sequence sampling.
The sampling device is provided with a plurality of sampling units in each in-situ sealed cabin; and at a set sampling time node, each in-situ sealed cabin is provided with a group of sampling units for executing sampling actions. In this way, long-interval automatic time-sequential sampling by the sampling device can be realized. The obtained samples have a long enough time interval, so that the scientific research requirements for the decomposition condition of the seabed hydrate can be met.
(3) The invention can obtain the control sample under the same sampling condition.
In each group of sampling units, the nested structure design of simultaneously matching two sets of storage cylinders and sampling cylinders by the oil filling motor is adopted. Two independent samples can be obtained simultaneously during sampling, a comparison reference object can be provided for the subsequent analysis process, and various scientific research requirements are met.
(4) The invention can monitor the parameter change of the sample in the sampling process.
Through the multiparameter sensor arranged in each sampling tube, the monitoring signal acquisition module can record the evolution process of parameters such as carbon dioxide concentration, temperature, salinity, pH, oxidation-reduction potential and the like of a sample in different sealing environments along with time, so that reference data are provided for subsequent scientific research work.
(5) The invention can realize heat preservation in the recovery process of the device.
The sampling device is provided with the semiconductor refrigerating sheet on the storage cylinder, and the active temperature control based on the thermoelectric cooler can be realized through the power supply driving control module. Thereby avoiding temperature changes affecting the sample during the process of rising from the sea bottom to the sea surface.
Drawings
FIG. 1 is a perspective view of the overall structure of the present invention;
FIG. 2 is a bottom view of the device of the present invention;
FIG. 3 is a cross-sectional view of an infusion module in the device of the present invention;
FIG. 4 is a cross-sectional view of the device of the present invention;
fig. 5 is a perspective view of a timing sampling module in the apparatus of the present invention.
Fig. 6 is a schematic view of an operation switching mechanism in the apparatus of the present invention.
Reference numerals in the drawings: 1, injecting a module; 1-1 an oil-filled motor; 1-2 screw rods; 1-3 supporting rods; 1-4 pistons; 1-5 storage barrels; 2, in-situ sealing the cabin; 2-1 a power supply drive control module; 2-2 monitoring signal acquisition module; 2-3T-handle; 2-4 top end covers; 3 fixing devices; a time sequence sampling module; 4-1 screw rods; 4-2 screw connecting plates; 4-3 sampling tube; 4-4 turning plate valves; 4-5 of a storage cylinder; 4-6 semiconductor refrigerating sheets; 4-7 latch motor; 4-8 motor fixing plates; 4-9 batteries; 4-10 driving rods; 4-11 bolts.
Detailed Description
The invention will now be described in detail with reference to the accompanying drawings.
The reference numerals used for the components in this application, such as "first," "second," etc., are used merely to distinguish between the described objects, and do not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Device structure description:
as shown in the figure, the deep sea sediment sampling device for simultaneously realizing time sequence sampling under multiple environmental conditions comprises a fixing device 3 of a frame structure, three in-situ sealed cabins 2 are arranged in the frame structure in a triangle axial parallel mode, and two injection modules 1 are fixed on the frame structure.
The in-situ sealed cabin 2 is a hollow cavity with a sealed top end, and a cavity sealing plate is arranged at the opening end of the bottom. The top end sealing cover of the in-situ sealed cabin 2 is provided with a T-shaped handle 2-3 for grabbing operation of the underwater robot. The inside of the cavity of the in-situ sealed cabin 2 is provided with a time sequence sampling module 4, and the time sequence sampling module 4 comprises three groups (more sampling units can also be provided) of sampling units with the same structure and a motor fixing plate 4-8. Each sampling unit comprises an oil filling motor, a screw 4-1, a sampling tube 4-3 and a preservation tube 4-5. The open end of the preservation cylinder 4-5 is embedded in a through hole on the cavity sealing plate, and the oil-filled motor is fixed on the motor fixing plate 4-8 through three supporting rods; the screw rod 4-1 is wrapped in a screw rod protective sleeve, and the screw rod 4-1 and the screw rod protective sleeve are in clearance fit; the screw rod protective sleeve passes through the through holes on the motor fixing plates 4-8, and the screw rod protective sleeve and the motor fixing plates are tightly matched. The upper part of the preservation cylinder 4-5 is provided with a piston, and the bottom opening end of the preservation cylinder 4-5 is provided with a flap valve 4-4; the sampling tube 4-3 is nested and arranged inside the preservation tube 4-5, the upper end of the sampling tube is fixed below the piston, and the inside of the sampling tube 4-3 is used as a sample preservation space; the output end of the oil charge motor is connected to the upper end of the piston through a lead screw 4-1, and can drive the sampling cylinder 4-3 to vertically move up and down in the storage cylinder 4-5 so as to execute sampling action.
Optionally, the oil-filled motor in each set of sampling units may also match the nesting structure of two sets of storage cylinders and sampling cylinders simultaneously: the lower end of a screw rod 4-1 is fixed in the center of a screw rod connecting plate 4-2, piston rods of two sampling cylinders 4-3 are fixedly connected to two ends of the screw rod connecting plate, and one oil charging motor is used for driving the sampling cylinders in two storage cylinders simultaneously.
An example of the operation switching mechanism is shown in fig. 6. The action switching mechanism comprises driving rods 4-10 and bolts 4-11 which are the same as the storage cylinders 4-5 in the sampling unit in number; the bolt motors 4-7 are positioned on the cavity sealing plates in the centers of the sampling units, and the bolts 4-11 are in one-to-one correspondence with the storage cylinders 4-5 and are arranged around the bolt motors 4-7; traction springs are respectively arranged on the inner side and the outer side of the flap valve 4-4, and each bolt 4-11 is connected with the traction spring on the outer side and can keep the flap valve 4-4 in an open state. The driving rod 4-10 is axially and vertically connected with the output end of the plug motor 4-7.
After the sampling tube 4-3 performs a sampling operation by means of extension-retraction, the latch motor 4-7 performs a rotational movement and drives the driving rod 4-10 to rotate. When the driving rod 4-10 rotates to the direction of the sampling tube 4-3 with the sampling action completed, the tail end of the driving rod is inserted into the corresponding bolt 4-11, the bolt 4-11 is stirred by continuing to rotate, so that the outside traction spring is released, and the turning plate valve 4-4 performs closing action under the elastic force of the inside traction spring, so that a sealed environment is formed inside the storage tube 4-5.
The injection module 1 comprises an oil filling motor, a screw rod 1-2 and a storage cylinder 1-5, wherein the storage cylinder 1-5 is of a cylindrical structure with two closed ends, and a piston 1-4 is arranged in the storage cylinder. A water sample preservation space is arranged below the pistons 1-4; the shell of the oil charge motor is connected with a storage cylinder 1-5 through a plurality of support rods 1-3, and an output shaft of the oil charge motor drives a piston 1-4 to displace in the storage cylinder through a lead screw 1-2. Each injection module 1 corresponds to an in-situ sealed cabin 2 and is respectively connected with a water sample storage space and a sample storage space through pressure hoses;
a plurality of batteries are arranged in each in-situ sealed cabin 2 and are respectively used for supplying power to electric equipment or components. Optionally, there are a plurality of batteries, wherein the batteries 4-9 powering the motors are provided directly in the housing of each motor.
Considering the heat preservation requirement in the recovery device process, a plurality of semiconductor refrigerating sheets 4-6 and batteries for supplying power to the semiconductor refrigerating sheets are also arranged in the device, and the semiconductor refrigerating sheets and the batteries are connected through cables; the cold ends of the semiconductor refrigerating sheets 4-6 are attached to the outer sides of the corresponding storage cylinders 4-5, and the hot ends are fixed to the outer sides of the in-situ sealed cabin 2.
In view of the pressure maintaining requirements during the recovery of the device, the device is also equipped with an accumulator (not shown in the figures) with built-in pistons, which is connected to the inner chambers of the respective in-situ capsule by pressure hoses. The bottom of the preservation cylinder 4-5 is provided with a sealing ring, and the flap valve 4-4 is attached to the sealing ring for sealing. The invention focuses on the whole process monitoring of the deep-seated carbon morphology change process, so that accurate pressure maintaining is not needed for sampling.
A power supply driving control module 2-1 and a monitoring signal acquisition module 2-2 are arranged at the top end of the in-situ sealed cabin 2; the power supply driving control module 2-1 comprises a battery and a singlechip, and is respectively connected with electric equipment or components (such as a sampling unit, an oil charge motor in the injection module 1, a plug pin motor in the in-situ sealed cabin 2 and a semiconductor refrigerating sheet 4-6) through cables. The monitoring signal acquisition module 2-2 comprises a battery and a singlechip, and is respectively connected with a multi-parameter sensor arranged in each sampling tube 4-3 through a cable.
The Single chip microcomputer (Single-Chip Microcomputer) is an integrated circuit chip, and adopts ultra-large scale integrated circuit technology to realize functions such as a Central Processing Unit (CPU), a Random Access Memory (RAM), a read-only memory (ROM), various I/O ports and interrupt systems, a timer/counter and the like with data processing capability (the circuits such as a display driving circuit, a pulse width modulation circuit, an analog multiplexer, an A/D converter and the like can be configured according to requirements). According to the invention, the contents of each motor action execution flow, monitoring signal acquisition, data conversion, semiconductor refrigerating sheet temperature regulation and the like can be written into the singlechip in a software form according to the needs of sampling and monitoring. All operations of the sampling device are automatically executed by the power supply driving control module 2-1 according to the built-in software and the preset time node. The implementation manner of the part of the content does not belong to the protection scope of the present invention, and the technical means which are mastered by the skilled person can be implemented as required, so that the present invention is not repeated.
The using method comprises the following steps:
1. preparation:
(1) And assembling the injection module 1, the in-situ sealed cabin 2, the fixing device 3 and the energy accumulator, and constructing a sampling device.
The bolts 4-11 in all sampling units are connected with the outside traction springs of the corresponding flap valves 4-4, so that all the flap valves 4-4 are kept in an open state.
Two injection modules 1 are connected to the corresponding in-situ capsule 2 with PEEK pressure hoses, respectively, the water sample holding spaces and the corresponding sample holding spaces are connected, and then the valves are closed and the sealing is ensured.
(2) Saturated carbon dioxide water and distilled water are respectively injected into the storage cylinders 1-5 of the two injection modules 1.
(3) The sampling device is carried on an underwater robot, and a manipulator of the underwater robot is lowered to a preset sampling position on the seabed;
2. the sampling process comprises the following steps:
(1) Implementation of multi-environmental condition sampling:
the underwater robot sits the sampling device on the proper seabed surface by grabbing the T-shaped handles 2-3, and presses down to enable the bottom of the sampling device to be integrally inserted into a sea water-sediment interface, so that an in-situ sea water sampling environment is formed. The oil filling motor 1-1 drives the screw rod 1-2 to drive the piston 1-4 to do linear motion, water samples in the storage cylinders 1-5 are injected into the corresponding in-situ sealed cabin body 2 through PEEK pressure hoses, and each sampling cylinder 4-3 is filled.
In this way, an environment in which carbon dioxide solubility is higher than in-situ seawater can be formed in one in-situ sealed capsule 2, an environment in which carbon dioxide solubility is lower than in-situ seawater can be formed in the other in-situ sealed capsule 2, and the remaining one in-situ sealed capsule 2 is used to preserve the sampling environment of in-situ seawater. In this way, monitoring data and sample analysis controls under multiple environmental condition sampling conditions can be achieved.
(2) Implementation of long-interval time sequence sampling:
at the set sampling time node, a group of sampling units in each of the three in-situ sealed cabin bodies 2 execute sampling actions: the oil filling motor drives the screw rod 4-1 to press down the piston so that the sampling tube 4-3 penetrates into the sea water-sediment interface for sampling; and then lifting the piston to recycle the sampling cylinder 4-3 into the storage cylinder 4-5, and driving the action switching mechanism to close the corresponding flap valve 4-4 by the plug motor 4-7.
Repeating the sampling operation with a second set of sampling units in each in-situ sealed capsule 2 after a set first time interval (e.g., two weeks); after a set second time interval (e.g., two weeks), the sampling operation described above is repeated with a third set of sampling units in each in-situ sealed capsule 2.
In this way, long-interval automatic time-sequential sampling by the sampling device can be realized. The obtained samples have a long enough time interval, so that the scientific research requirements for the decomposition condition of the seabed hydrate can be met.
(3) Control samples were obtained:
in each group of sampling units, the nested structure design of two sets of storage cylinders and sampling cylinders is matched by adopting an oil-filled motor. When in sampling, two independent samples can be obtained simultaneously, a comparison reference object can be provided for the subsequent analysis process, and various scientific research requirements are met.
(4) Monitoring sample parameter changes in the sampling process:
through the multi-parameter sensor 2-2 arranged in each sampling tube 4-3, the monitoring signal acquisition module 2-2 can record the evolution process of parameters such as carbon dioxide concentration, temperature, salinity, pH, oxidation-reduction potential and the like of a sample in different sealing environments along with time, so that reference data are provided for subsequent scientific research work.
(5) Heat preservation in the recovery process of the device:
and at the set sampling end time point, the mother ship is used for launching the underwater robot to recycle the sampling device. The temperature change is very large in the process of rising to the sea surface from the sea bottom, and active temperature control based on a thermoelectric cooler is required to be started to realize heat preservation recovery of the sample in order to avoid influencing the sample. The cold end of the semiconductor refrigerating sheet 4-6 is attached to the preserving cylinder 4-5, and the hot end of the semiconductor refrigerating sheet exchanges heat with seawater in the recovery process to take away heat. And (3) carrying out heat preservation and pressure maintaining transfer on the mother ship, wherein the obtained sample is used for carrying out laboratory tests and fine analysis.
Finally, it should be noted that the above list is only a specific example of the invention. Obviously, the invention is not limited to the above embodiments, but many variations are possible. All modifications directly derived or suggested to one skilled in the art from the present disclosure should be considered as being within the scope of the present invention.
Claims (10)
1. A deep sea sediment sampling device for simultaneously realizing time sequence sampling under multiple environmental conditions, comprising: three in-situ sealed cabins and two injection modules which are arranged on the fixing device;
the in-situ sealed cabin is a hollow cavity with a sealed top end, and a cavity sealing plate is arranged at the opening end of the bottom; a time sequence sampling module is arranged in the cavity and at least comprises three groups of sampling units with the same structure; the sampling unit comprises an oil filling motor, a screw rod, and a plurality of groups of sampling cylinders and storage cylinders which are nested; the bottom opening end of each storage cylinder is embedded in a through hole on the cavity sealing plate, the upper part of each storage cylinder is provided with a piston, and the opening end is provided with a flap valve; a sampling tube is nested in each storage tube, the upper end of the sampling tube is fixed below the piston, and a sample storage space is formed in each sampling tube; the output end of the oil charge motor is connected to the piston rod through a screw rod, so that the sampling tube can be driven to vertically displace in the storage tube; a bolt motor matched with each sampling unit is arranged on the cavity sealing plate, and the output end of the bolt motor is connected to each flap valve through an action switching mechanism so as to realize valve opening and closing;
the injection module comprises an oil charge motor, a screw rod and a storage cylinder, wherein the storage cylinder is of a cylindrical structure with two closed ends and a piston arranged in the storage cylinder, and a water sample storage space is arranged below the piston; the shell of the oil charge motor is connected with the storage cylinder through a plurality of support rods, and an output shaft of the oil charge motor drives the piston to displace in the storage cylinder through a lead screw; each injection module corresponds to an in-situ sealed cabin and is respectively connected with the water sample storage space and the sample storage space through pressure hoses;
a plurality of batteries are arranged in each in-situ sealed cabin and are used for supplying power to each motor.
2. The sampling device of claim 1, wherein the securing means is a frame structure; the three in-situ sealed cabins are arranged in the frame structure in a triangle axial parallel mode, and the injection module is fixed on the frame structure.
3. The sampling device of claim 1, wherein a T-shaped handle is provided on the top end cap of the in-situ capsule.
4. The sampling device of claim 1, wherein the motion switching mechanism comprises a drive rod and the same number of pins as the number of storage cylinders in the sampling unit; the plug pin motors are positioned on the cavity sealing plates in the centers of the sampling units, and the plug pins are in one-to-one correspondence with the storage cylinders and are arranged around the plug pin motors; traction springs are respectively arranged on the inner side and the outer side of the flap valve, and the latch is connected with the traction springs on the outer side to enable the flap valve to be kept in an open state.
5. The sampling device of claim 1, wherein the battery that powers the motors is directly disposed in the housing of each motor.
6. The sampling device of claim 1, wherein in each set of sampling units, the oil filled motor simultaneously matches the nesting structure of two sets of storage cartridges and sampling cartridges: the lower end of the screw rod is fixed in the center of the screw rod connecting plate, and piston rods of the two sampling cylinders are fixedly connected to the two ends of the screw rod connecting plate, so that one oil-filled motor drives the sampling cylinders in the two storage cylinders simultaneously.
7. The sampling device of claim 1, wherein the timing sampling module comprises a motor fixing plate, and the oil-filled motor in each sampling unit is fixed on the motor fixing plate through a plurality of support rods; the screw rod is wrapped in the screw rod protective sleeve, and the screw rod are in clearance fit; the screw rod protective sleeve penetrates through the through hole in the motor fixing plate, and the screw rod protective sleeve and the through hole are in close fit.
8. The sampling device of claim 1, further comprising a plurality of semiconductor cooling fins and a battery for powering the semiconductor cooling fins, the semiconductor cooling fins and the battery being connected by a cable; the cold ends of the semiconductor refrigerating sheets are attached to the outer sides of the corresponding storage cylinders respectively, and the hot ends of the semiconductor refrigerating sheets are fixed to the outer sides of the in-situ sealed cabin.
9. The sampling device according to claim 1, wherein a power supply driving control module and a monitoring signal acquisition module are arranged at the top end of the in-situ sealed cabin; the inside of the former comprises a battery and a singlechip, and is respectively connected with a sampling unit, an oil charge motor in the injection module, a battery and a bolt motor which are arranged in the in-situ sealed cabin through cables; the latter includes battery and singlechip inside to connect respectively through the cable and locate the multiparameter sensor in each sampling tube.
10. A sampling device according to any one of claims 1 to 9, further comprising an accumulator with a built-in piston connected to the interior of each in-situ capsule by a pressure hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310237253.XA CN116429471A (en) | 2023-03-13 | 2023-03-13 | Deep sea sediment sampling device capable of simultaneously realizing time sequence sampling under multiple environmental conditions |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310237253.XA CN116429471A (en) | 2023-03-13 | 2023-03-13 | Deep sea sediment sampling device capable of simultaneously realizing time sequence sampling under multiple environmental conditions |
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| CN116429471A true CN116429471A (en) | 2023-07-14 |
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| CN202310237253.XA Pending CN116429471A (en) | 2023-03-13 | 2023-03-13 | Deep sea sediment sampling device capable of simultaneously realizing time sequence sampling under multiple environmental conditions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117990440A (en) * | 2024-04-01 | 2024-05-07 | 浙江绿凯生态环境集团股份有限公司 | Lake river sediment sampling device |
-
2023
- 2023-03-13 CN CN202310237253.XA patent/CN116429471A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117990440A (en) * | 2024-04-01 | 2024-05-07 | 浙江绿凯生态环境集团股份有限公司 | Lake river sediment sampling device |
| CN117990440B (en) * | 2024-04-01 | 2024-07-02 | 浙江绿凯生态环境集团股份有限公司 | Lake river sediment sampling device |
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