CN110907233A - Portable seabed normal position shallow surface layer deposit sampling device - Google Patents
Portable seabed normal position shallow surface layer deposit sampling device Download PDFInfo
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- CN110907233A CN110907233A CN201910962395.6A CN201910962395A CN110907233A CN 110907233 A CN110907233 A CN 110907233A CN 201910962395 A CN201910962395 A CN 201910962395A CN 110907233 A CN110907233 A CN 110907233A
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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
- G01N1/16—Devices for withdrawing samples in the liquid or fluent state with provision for intake at several levels
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Abstract
The invention discloses a portable seabed in-situ shallow surface sediment sampling device, and relates to the technical field of seabed sampling, wherein a fixing plate is externally connected with a handle; the outer cylinder is fixedly arranged on the fixing plate, the outer cylinders are uniformly distributed on the outer side of the screw rod, the bottom end of the outer cylinder is tapered, an open slot A back to the screw rod is formed in the side surface of the outer cylinder, and an open slot B right facing the screw rod is formed in the side surface of the outer cylinder; each rotating shaft is arranged in the outer cylinder; the sampling cylinder is arranged on the rotating shaft, and a sampling port corresponding to the open slot A is arranged on the side surface of the sampling cylinder; the gear A is fixedly arranged on the rotating shaft and is opposite to the open slot B of the outer barrel; the gears B are rotationally arranged on the screw rod, and each gear B is matched with the three gears A simultaneously. The invention has the advantages that the defects of complicated operation and low sampling success rate when the sediment samples at the seabed are obtained by the traditional method can be effectively avoided, and the sediment samples at different layers of the seabed can be obtained by one-time submerging operation.
Description
Technical Field
The invention relates to the technical field of seabed sampling, which can be used for obtaining sediment samples of different sediment types under a seabed water-sediment interface, is particularly suitable for in-situ fixed-point sediment sample collection in deep sea extreme environments (cold spring and hot liquid areas), and particularly relates to an adjustable deep sea multifunctional sampling device based on the manipulator operation of an underwater remote control robot.
Background
The marine sediment refers to a general term of various seabed sediments formed under different marine sedimentations such as physics, chemistry and biology. The engineering property of the submarine sediments is a precondition for laying submarine cables and oil pipelines and building a marine oil drilling platform; the forming environment of the seabed sediments can provide important support for the development of marine oil and gas, seabed mineral resources and the like; meanwhile, the seabed sediments are also indispensable materials for developing ancient oceanographic research.
Obtaining sediment samples from the seafloor below the water-sediment interface is generally done by two methods: 1) and (3) fixed-point launching on the sea surface: when the sediment sample reaches a designated operation area, a ship-borne sampling device (such as a gravity sampler or a box-type sampler) is thrown at a fixed point to obtain a sediment sample; 2) seabed in-situ sampling: when the underwater sampling device (push core) is carried by an ROV (underwater remote control robot), and when the underwater sampling device reaches a designated area, the underwater sampling device is used for carrying out in-situ fixed-point operation through a mechanical arm so as to obtain a sediment sample.
However, these two conventional methods of obtaining samples of extreme environmental seafloor sediments suffer from certain disadvantages and drawbacks: 1) in the sea surface fixed-point throwing mode, sediment samples in an investigation research area cannot be accurately obtained, the sediment samples are often thrown in a blind mode, the accurate throwing position cannot be known, and the typicality of the obtained samples cannot be guaranteed; 2) in a seabed in-situ sampling mode, the core taking success rate of the push core sediment sampling equipment carried by the current ROV (underwater remote control robot) or HOV (manned deep submersible vehicle) is low, and even if sediment samples are collected, the quantity of the sediment samples is very effective; 3) two sediment sampling modes have the disadvantages of complex operation and low efficiency, and only one sediment sample can be collected each time. Therefore, there is an urgent need to develop an in-situ sampling device for seabed sediments, which can accurately and efficiently obtain a shallow surface sediment sample so as to provide materials for ocean engineering, seabed mineral resource development and ancient oceanographic research.
Disclosure of Invention
The invention aims to avoid the defects of inaccurate sample acquisition and low sampling success rate of the traditional method, realize that sediment samples at different layers below a multi-pipe water-sediment interface can be accurately and quickly acquired by one-time ROV or AUV submergence operation, and keep the in-situ seabed state of the sediment to a certain extent.
In order to achieve the above object, the present invention provides a portable device for sampling seabed in-situ shallow surface sediment, which comprises a fixing plate, wherein the fixing plate is externally connected with a handle, and the device further comprises: the screw rod is rotatably arranged on the fixing plate, and the top end of the screw rod is externally connected with a sampling handle; the outer cylinders are fixedly arranged on the fixing plate and uniformly distributed on the outer side of the screw rod, the bottom ends of the outer cylinders are tapered, an open slot A back to the screw rod is formed in the side face of each outer cylinder, and an open slot B opposite to the screw rod is formed in the side face of each outer cylinder; each rotating shaft is arranged in the outer barrel; the sampling cylinder is arranged on the rotating shaft, the outer diameter of the sampling cylinder is equal to the inner diameter of the outer cylinder, and a sampling port corresponding to the open slot A is formed in the side surface of the sampling cylinder; the gear A is fixedly arranged on the rotating shaft and is opposite to the open slot B of the outer barrel; and the gears B are rotationally arranged on the screw rod, and each gear B is simultaneously matched with the three gears A. The method can effectively avoid the defects of complicated operation and low sampling success rate of obtaining the submarine sediment samples by the traditional method, and can obtain multi-pipe sediment samples at different layers below a water-sediment interface by one-time submerging operation.
Furthermore, an upper baffle and a lower baffle are arranged on the screw rod, the upper baffle and the lower baffle are respectively positioned on two sides of the fixed block, and the upper baffle and the lower baffle are used for limiting the position of the screw rod on the fixed plate.
Furthermore, the rotating shaft comprises a limiting shaft and a limiting sleeve, and the limiting shaft is connected with the limiting sleeve through a pin.
Furthermore, three sampling barrels are arranged on each rotating shaft.
Further, the outer side of the sampling port is provided with an internally-tangent chamfer.
Furthermore, there are two groups of gears B, which are respectively positioned at two sides of the open slot A.
Further, the handle is arranged at the top end or the side surface of the fixing plate.
The invention has the beneficial effects that: sediment samples at different positions below a sea bottom water-sediment interface can be obtained through one-time submerging operation, the defect that a seabed in-situ sampling device based on an ROV or HOV is absent at present can be overcome, and the multi-pipe sediment samples at different positions of the seabed can be quickly, accurately and efficiently obtained through one-time submerging operation; the defects that the operation of obtaining the submarine sediment sample is complicated, only a single sediment sample can be collected each time and the success rate is low in the traditional method are overcome; in addition, the three sampling cylinders are used for sampling operation at the seabed, so that the sampling area can be effectively increased, and the sampling success rate is greatly improved; in addition, even if the sampling device is inclined, the design can ensure that the sampling is finished; the device has important practical value and innovative significance for ocean engineering, submarine mineral resource development, ancient oceanographic research and the like.
Drawings
FIG. 1 is a schematic structural diagram of a sampling device of the present application, wherein a sampling port of a sampling cylinder is positioned in an outer cylinder;
FIG. 2 is a schematic structural diagram of a sampling device of the present application, wherein a sampling port of a sampling cylinder is located at an open groove A of an outer cylinder;
FIG. 3 is a schematic diagram of the sampling apparatus of the present application;
FIG. 4 is a schematic structural diagram of the outer barrel of the present application;
fig. 5 is an assembly structure diagram of the rotating shaft of the present application.
In the above figures, 1, a fixing plate; 2. a screw rod; 3. an outer cylinder; 31. an open slot A; 32. an open slot B; 4. a rotating shaft; 5. a sampling cartridge; 51. a sampling port; 6. a gear A; 7. a gear B; 81. an upper baffle plate; 82. and a lower baffle plate.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments is as follows:
a portable seabed in-situ shallow surface sediment sampling device is shown in figures 1 to 5 and comprises a fixing plate 1, a screw rod 2, three outer cylinders 3, three rotating shafts 4, a sampling cylinder 5, a gear A6 and a gear B7.
Referring to fig. 1 and 2, the fixing plate 1 is externally connected with a handle which can place the sampling device on the seabed by an ROV or HOV robot arm, and the handle can be fixed on the top end of the fixing plate 1 as shown in fig. 1 and 2, and can also be fixed on the side surface of the fixing plate 1.
The screw rod 2 is rotatably arranged on the fixing plate 1, the top end of the screw rod 2 is externally connected with a sampling handle, the power of the sampling handle is preferably controlled by an ROV or HOV mechanical arm, the gear B7 is rotatably arranged on the screw rod 2, downward power is provided through the mechanical arm, and then the gear B7 and the screw rod 2 are enabled to generate rotary motion.
The outer cylinder 3 is fixedly arranged on the fixing plate 1, the outer cylinders 3 are uniformly distributed on the outer side of the screw rod 2, the bottom ends of the outer cylinders 3 are tapered, and when a mechanical arm applies downward pressure to the fixing plate 1, the three outer cylinders 3 can be inserted into a shallow surface layer.
Referring to fig. 4, the outer cylinder 3 is provided at a side thereof with an open groove a31 facing away from the lead screw 2, and each rotation shaft 4 is provided in the outer cylinder 3. The sampling cylinder 5 is arranged on the rotating shaft 4, the outer diameter of the sampling cylinder 5 is equal to the inner diameter of the outer cylinder 3, and the side surface of the sampling cylinder 5 is provided with a sampling port 51 corresponding to the open groove A31. When sampling is needed, the rotating shaft 4 is controlled to rotate, and the sampling port 51 is opposite to the open slot A31, so that the sampling is completed. In fig. 3 and 5, three sampling cartridges 5 are arranged on each rotating shaft 4, so that sediments at different levels can be obtained from the same angle at one time, and the number of the sampling cartridges 5 can be selected and designed according to actual conditions. Preferably, the rotating shaft 4 comprises a limiting shaft and a limiting sleeve, and the limiting shaft and the limiting sleeve are connected through pins so as to be convenient for connecting the plurality of sampling cylinders 5.
Regarding the rotation of the rotating shaft 4, the present application is realized by the following scheme that the side surface of the outer cylinder 3 is provided with an open slot B32 facing the screw rod 2. The gear A6 is fixedly arranged on the rotating shaft 4, the gear A6 is opposite to the opening groove B32 of the outer cylinder 3, and each gear B7 is matched with three gears A6 simultaneously. When the screw rod 2 generates rotary motion, the gear B generates rotary motion along with the screw rod, and then the three gears A6 are driven to rotate.
This application realizes the rotation of cartridge 5 through the up-and-down motion of control lead screw 2, and the displacement of reciprocating of lead screw 2 should not be too big, otherwise can lead to 2 wide-angle rotations of cartridge, has rotatory excessive problem, so be equipped with overhead gage 81 and lower baffle 82 on lead screw 2, overhead gage 81 and lower baffle 82 are located the both sides of fixed block respectively, overhead gage 81 and lower baffle 82 are used for restricting the position of lead screw 2 on fixed plate 1. As shown in fig. 1 and 2, in the device of the present application, the lower baffle 82 is attached to the fixing plate 1 during sinking, and the sampling opening 51 of the sampling cartridge 5 is inside the sampling cartridge 2. When sampling is needed, the screw rod 2 is slowly pressed downwards, at the moment, the sampling port 51 of the sampling cylinder 5 is over against the open slot B32 of the sampling cylinder 2, sampling is started, and the sampling is completed along with the pressing of the screw rod 2. And after sampling, continuously pressing the screw rod 2 downwards until the upper baffle 81 is attached to the fixed plate 1, and storing a sediment sample. Preferably, the outer side of the sampling opening 51 is provided with an internally cut chamfer, reducing the resistance to rotation of the cartridge 5. When the sample needs to be taken out, the screw rod 2 is lifted in the opposite direction.
In view of the power transmission to the three shafts 4 through the screw 2, in order to improve the strength of the entire apparatus, there are two sets of gears B7, which are respectively located at both sides of the open groove a 31.
When a submarine sediment sample needs to be collected, the ROV or HOV mechanical arm is used for holding the handle above the fixed plate 1 to slowly insert the sampling device into the submarine sediment, after the sampling device is stabilized, the mechanical arm presses the sampling handle above the screw rod 2 downwards, at the moment, the sampling port 51 of each sampling cylinder 5 is opposite to the open slot 31, and at the moment, submarine shallow sediment enters the sampling cylinder 5. After sampling is finished, the sampling handle on the screw rod 2 is continuously pressed downwards, at the moment, the sampling port 51 of the sampling cylinder 5 is closed, and then the sampling device is taken out through the mechanical arm, so that the purpose of collecting the seabed shallow sediment sample is finished.
When the water content of the shallow sediment on the seabed is high, in the operation process, edible oil can be injected into the sampling cylinders 5 of the sampling device on a laboratory (or a ship deck) (because seawater is insoluble in the edible oil, the pollution to the seabed sample caused by the mixing of the seawater in the submerging process of the device can be prevented), then the sampling ports 51 of the sampling cylinders are back to the opening grooves 31, then the sampling cylinders are brought to the seabed through the ROV or the HOV, when the sampling stations are reached, the sampling device is slowly inserted into the seabed sediment by using the ROV or the HOV to hold the handles on the fixing plates 1, after the sampling device is stabilized, the mechanical arm is controlled to forcibly press down the sampling handles on the screw rods 2, and then the shallow sediment on the seabed can enter the sampling cylinders 5. After sampling is finished, the mechanical arm continues to forcibly press the sampling handle on the screw rod 2 until the upper baffle 81 is attached to the fixed plate 1, at the moment, the sampling port 51 of the sampling cylinder 5 is closed, and then the mechanical arm takes out the sampling device, so that the purpose of collecting the seabed high-water-content shallow sediment sample is finished.
The invention has been described above with reference to a preferred embodiment, but the scope of protection of the invention is not limited thereto, and various modifications can be made and equivalents can be substituted for elements thereof without departing from the scope of the invention, and features mentioned in the various embodiments can be combined in any way as long as there is no structural conflict, and any reference sign in the claims should not be construed as limiting the claim concerned, from which the embodiment is to be regarded as being exemplary and non-limiting in any way. Therefore, all technical solutions that fall within the scope of the claims are within the scope of the present invention.
Claims (7)
1. The utility model provides a shallow superficial deposit thing sampling device of portable seabed normal position, includes fixed plate (1), the external handle of fixed plate (1), its characterized in that still includes:
the screw rod (2) is rotatably arranged on the fixing plate (1), and the top end of the screw rod (2) is externally connected with a sampling handle;
the outer cylinders (3) are fixedly arranged on the fixing plate (1), the outer cylinders (3) are uniformly distributed on the outer side of the screw rod (2), the bottom ends of the outer cylinders (3) are tapered, an open slot A (31) back to the screw rod (2) is formed in the side face of each outer cylinder (3), and an open slot B (32) opposite to the screw rod (2) is formed in the side face of each outer cylinder (3);
the rotating shafts (4) are arranged in the outer barrel (3);
the sampling cylinder (5) is arranged on the rotating shaft (4), the outer diameter of the sampling cylinder (5) is equal to the inner diameter of the outer cylinder (3), and a sampling port (51) corresponding to the open slot A (31) is formed in the side surface of the sampling cylinder (5);
the gear A (6) is fixedly arranged on the rotating shaft (4), and the gear A (6) is opposite to an open slot B (32) of the outer barrel (3); and
the gears B (7) are rotationally arranged on the screw rod (2), and each gear B (7) is matched with three gears A (6) simultaneously.
2. The portable seabed in-situ shallow surface sediment sampling device as claimed in claim 1, wherein the screw rod (2) is provided with an upper baffle (81) and a lower baffle (82), the upper baffle (81) and the lower baffle (82) are respectively arranged at two sides of a fixed block, and the upper baffle (81) and the lower baffle (82) are used for limiting the position of the screw rod (2) on the fixed plate (1).
3. The portable seabed in-situ shallow surface sediment sampling device as claimed in claim 1, wherein the rotating shaft (4) comprises a limiting shaft and a limiting sleeve, and the limiting shaft and the limiting sleeve are connected through a pin.
4. The portable seafloor in-situ shallow surface sediment sampling device as claimed in claim 1, wherein three sampling cartridges (5) are arranged on each rotating shaft (4).
5. The portable seafloor in-situ shallow surface sediment sampling device as claimed in claim 1, wherein the outer side of the sampling port (51) is provided with an internally tangent chamfer.
6. The portable seafloor in-situ shallow surface sediment sampling device as claimed in claim 1, wherein the gears B (7) are arranged in two groups, and are respectively positioned at two sides of the open groove A (31).
7. The portable seafloor in-situ shallow surface sediment sampling device as claimed in claim 1, wherein the handle is arranged at the top end or the side of the fixing plate (1).
Applications Claiming Priority (2)
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| CN201910727810 | 2019-08-08 | ||
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| CN110907233B CN110907233B (en) | 2020-11-24 |
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Cited By (2)
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| CN111721581A (en) * | 2020-06-18 | 2020-09-29 | 中国海洋大学 | Seabed sand wave sediment sampling device and method |
| CN115901357A (en) * | 2022-11-09 | 2023-04-04 | 自然资源部第一海洋研究所 | Automatic sampling device and method for seabed soft mud layer sediment |
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