A deep-sea sediment pressure-maintaining transfer device

Abstract

This invention relates to the field of marine equipment technology, and aims to provide a deep-sea sediment pressure-maintaining transfer device. It includes: a sampling mechanism, a transfer mechanism, a culture vessel mechanism, and a high-pressure pump set; wherein, the sampling mechanism includes a sampler, a pressure-maintaining cylinder, an accumulator, and a pressure-maintaining cylinder ball valve; the transfer mechanism includes a long-stroke gripping mechanism, a long-stroke pressure-maintaining cylinder, and a transfer mechanism ball valve arranged sequentially, the long-stroke pressure-maintaining cylinder including a cylinder body, a secondary sampling tube, and a sampling tube piston, the long-stroke gripping mechanism including a cylinder body, a long-stroke gripper, and a limiting block; the culture vessel mechanism includes a culture vessel transfer cylinder, a three-way ball valve, and a culture vessel body connected in a sealed manner. This invention combines a bidirectional piston rod with a secondary sampler, facilitating sampling and transfer operations; it ensures pressure maintenance throughout the operation, preserving the original living environment of microorganisms, greatly improving the survival rate of microorganisms, and facilitating cultivation.

Description

Technical Field

[0001] The present invention relates to the technical field of marine equipment, and more specifically, to a deep-sea sediment pressure-maintaining transfer device. Background Art

[0002] The rapid development of deep-sea exploration technology has promoted people's understanding of the deep-sea environment, and the study of seabed sediments also has great application value in industry, medicine, and environmental protection.

[0003] After the samples are taken from the seabed, they need to be analyzed and processed. Before that, the seabed sediment samples in the sample tube need to be transferred to the culture axe. However, due to the limitations of detection technology, the current deep-sea sampling technology is not mature, and non-pressure sampling is usually used for sediments, which leads to problems such as the overflow of dissolved gas from the samples during the transfer process and the death of microorganisms caused by pressure drop. At the same time, the existing pressure-maintaining sampling equipment can only achieve independent fidelity sampling and fidelity culture. Multiple functional units are independent of each other, which makes the overall pressure-maintaining transfer equipment complex. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a deep-sea sediment pressure-maintaining transfer device in order to overcome the deficiencies in the prior art.

[0005] To solve the technical problem, the solution of the present invention is:

[0006] A deep-sea sediment pressure-maintaining transfer device is provided, comprising: a sampling mechanism, a transfer mechanism, a culture kettle mechanism and a high-pressure pump group; wherein:

[0007] The sampling mechanism comprises a sampler, a pressure-maintaining cylinder, an accumulator and a pressure-maintaining cylinder ball valve; the sampler is a hollow pipe fitting, the lower end of which is a sampling opening, the upper end is provided with a sealing end cover, and a gripper is provided on the sealing end cover; the pressure-maintaining cylinder is a hollow pipe fitting with an upper end opening, the sampler can be inserted into the pressure-maintaining cylinder and form a sealing fit; the lower end of the pressure-maintaining cylinder is connected to the pressure-maintaining cylinder ball valve, and the accumulator is connected to the side wall of the pressure-maintaining cylinder through a pipeline;

[0008] The transfer mechanism comprises a long-stroke gripping mechanism, a long-stroke pressure-maintaining cylinder and a transfer mechanism ball valve which are arranged in sequence; the long-stroke pressure-maintaining cylinder comprises a cylinder body, a secondary sampling tube and a sampling tube piston; the long-stroke gripping mechanism comprises a cylinder body, a long-stroke gripper and a limit block; wherein the cylinder body of the long-stroke pressure-maintaining cylinder is a hollow long cylinder with openings at both ends, one end of which is fixedly connected to the cylinder body of the long-stroke gripping mechanism, and the other end is sealingly connected to the transfer mechanism ball valve; the secondary sampling tube is fixedly connected to the sampling tube piston with its closed end, and its open end faces the transfer mechanism ball valve valve; the cylinder of the long-stroke gripping mechanism is a hollow long cylinder with one end closed, and a limit block is fixed inside it; the main body of the long-stroke gripper is a long straight rod, which passes through the through hole set in the center of the limit block and the sampling tube piston and has a piston at each end; the transfer mechanism also includes two groups of water filling and water return interfaces connected to the inside of the cylinder, each interface is connected to the high-pressure pump group through a pipeline, and a switch valve is provided on the pipeline; the two groups of interfaces are respectively located on both sides of the piston on the closed end side of the long-stroke gripping mechanism, and on both sides of the sampling tube piston in the long-stroke pressure-maintaining cylinder;

[0009] The culture kettle mechanism includes a culture kettle transfer cylinder, a three-way ball valve and a culture kettle body which are sealed and connected in sequence; one end of the cylinder of the culture kettle transfer cylinder is closed, and a limit block is provided in the cylinder; the main body of the transfer gripper is a rod, the rod passes through a through hole provided in the center of the limit block, and a piston and a cylindrical boss are provided at both ends thereof respectively; a group of water filling and returning interfaces connected to the inside of the cylinder are provided at the closed end of the culture kettle transfer cylinder, and each interface is connected to a high-pressure pump group through a pipeline; one end of the cylinder of the culture kettle body is closed, and a culture kettle ball valve is provided at its open end.

[0010] As an improved solution of the present invention, the device also includes a displacement sensing mechanism; the displacement sensing mechanism includes a coaxially arranged rod located outside the transfer mechanism cylinder, and two freely movable magnetic position marking blocks are provided on the rod; magnets corresponding to the position marking blocks are provided on the long-stroke gripper piston located at the closed end of the cylinder and the sampling tube piston located in the long-stroke pressure maintaining cylinder.

[0011] As an improved solution of the present invention, a group of overflow valve interfaces connected to the inside of the cylinder are respectively provided on the outside of the cylinder of the long-stroke pressure-maintaining cylinder and the long-stroke gripping mechanism, and the overflow valve interfaces are connected to the pressure-maintaining overflow valve for maintaining pressure.

[0012] As an improved solution of the present invention, the secondary sampling tube and the cylinder are clearance-fitted, and the sampling tube piston and the cylinder are sealingly fitted; one piston of the long-stroke gripper and the cylinder of the long-stroke gripping mechanism are sealingly fitted, and the other piston is located inside the secondary sampling tube and the two are sealingly fitted; the piston and the cylinder in the culture kettle transfer cylinder are sealingly fitted.

[0013] As an improved solution of the present invention, the limit block of the long-stroke grabbing mechanism is located inside the opening end of the cylinder.

[0014] As an improved solution of the present invention, among the two groups of water filling and water return interfaces, one group of interfaces is located at both ends of the long-stroke grabbing mechanism cylinder, and the other group of interfaces is located at both ends of the long-stroke pressure-maintaining cylinder.

[0015] As an improved solution of the present invention, the three-way ball valve has matching interfaces with the pressure-maintaining cylinder ball valve and the transfer mechanism ball valve, and can be sealed and connected via a clamp.

[0016] As an improved solution of the present invention, a pressure gauge is provided at the closed end of the culture kettle body.

[0017] As an improved solution of the present invention, the culture kettle transfer cylinder and the three-way ball valve, and the three-way ball valve and the culture kettle body are sealed and connected respectively through clamps.

[0018] As an improved solution of the present invention, the device also includes a bracket, which is composed of a base and a plurality of movable support seats, the support seats are placed on the base, and the sampling mechanism, transfer mechanism and culture kettle mechanism are respectively fixed on each support seat.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention proposes an innovative design of a long-stroke transfer mechanism, which combines a bidirectional piston rod with a secondary sampler for easy sampling and transfer operations.

[0021] 2. The present invention can ensure full pressure maintenance during the operation process, preserve the original living environment of microorganisms, greatly improve the survival rate of microorganisms, and facilitate cultivation.

[0022] 3. The present invention innovatively designs a magnetic displacement sensor mechanism in the transfer mechanism to monitor the position of the long-stroke gripper and the secondary sampling tube in real time to avoid damage to the equipment due to blind operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the deep-sea sediment pressure-maintaining transfer device of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the sampling mechanism;

[0025] Figure 3 It is the overall structural diagram of the transfer mechanism;

[0026] Figure 4 is an internal cross-sectional view of the transfer mechanism;

[0027] Figure 5 This is the coordination diagram of the long-stroke gripper and the secondary sampling tube;

[0028] Figure 6 It is a structural schematic diagram of the culture kettle mechanism;

[0029] Figure 7 This is an internal cross-sectional view of the culture vessel mechanism.

[0030] The reference numerals in the figure are: 1 sampling mechanism, 1-1 sampler, 1-2 pressure-maintaining cylinder, 1-3 accumulator, 1-4 pressure-maintaining cylinder ball valve, 2 transfer mechanism, 2-1 transfer mechanism ball valve, 2-2 displacement sensing mechanism, 2-3 water filling and return interface, 2-3-1 first water filling and return interface, 2-3-2 second water filling and return interface, 2-3-3 third water filling and return interface, 2-3-4 fourth water filling and return interface, 2-4 long-stroke pressure-maintaining cylinder, 2-5 long-stroke gripping mechanism, 2-5- 1 cylinder body, 2-5-2 long stroke gripper, 2-5-3 limit block, 2-6 overflow valve interface, 2-7 secondary sampling tube, 2-7-1 sampling tube piston, 2-7-2 sampling tube body, 3 culture kettle mechanism, 3-1 culture kettle transfer cylinder, 3-2 three-way ball valve, 3-3 clamp, 3-4 culture kettle body, 3-5 fifth water filling and return interface, 3-6 sixth water filling and return interface, 3-7 pressure gauge, 3-8 culture kettle ball valve, 3-9 transfer gripper, 4 high-pressure pump group, 5 bracket. DETAILED DESCRIPTION

[0031] The serial numbers assigned to the components in this application, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of this application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0032] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] The technical solution of the present invention will be described in detail below by way of embodiments with reference to the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0034] like Figure 1 As shown, the deep-sea sediment pressure-maintaining transfer device of the present invention comprises: a sampling mechanism 1, a transfer mechanism 2, a culture kettle mechanism 3, a high-pressure pump group 4 and a bracket 5; the bracket 5 is composed of a base and a plurality of movable support seats, the support seats are placed on the base, and the sampling mechanism 1, the transfer mechanism 2 and the culture kettle mechanism 3 are respectively fixed on the support seats. Optionally, a slide rail is provided on the base, and the support seat is detachably placed in the slide rail.

[0035] like Figure 2 As shown, the sampling mechanism 1 includes a sampler 1-1, a pressure-maintaining cylinder 1-2, an accumulator 1-3 and a pressure-maintaining cylinder ball valve 1-4; the sampler 1-1 is a hollow pipe, the lower end of which is a sampling opening, and the upper end is provided with a sealing end cover, on which a spherical gripper adapted to the underwater ROV mechanical arm is provided. The pressure-maintaining cylinder 1-2 is a hollow pipe with an opening at the upper end, and the sampler 1-1 can be inserted into the pressure-maintaining cylinder 1-2 and form a sealed fit; the lower end of the pressure-maintaining cylinder 1-2 is connected to the pressure-maintaining cylinder ball valve 1-4, and the accumulator 1-3 is connected to the side wall of the pressure-maintaining cylinder 1-2 through a pipeline to maintain the sample pressure after sampling;

[0036] like Figure 3-5 As shown, the transfer mechanism 2 includes a long-stroke gripping mechanism 2-5, a long-stroke pressure-maintaining cylinder 2-4 displacement sensing mechanism 2-2 and a transfer mechanism ball valve 2-1 arranged in sequence, the long-stroke pressure-maintaining cylinder 2-4 includes a cylinder body, a secondary sampling tube 2-7 and a sampling tube piston 2-7-1, and the long-stroke gripping mechanism 2-5 includes a cylinder body 2-5-1, a long-stroke gripper 2-5-2 and a stop block 2-5-3; wherein, the cylinder body of the long-stroke pressure-maintaining cylinder 2-4 is a hollow long cylinder with openings at both ends, one end of which is fixedly connected to the cylinder body 2-5-1, and the other end is sealed and connected to the transfer mechanism ball valve 2-1; the secondary sampling tube 2-7 is fixedly connected to the sampling tube piston 2-7-1 with its closed end, and its open end faces the transfer mechanism ball valve 2-1. The cylinder body 2-5-1 is a hollow long cylinder with one end closed, and a stop block 2-5-3 is arranged inside its open end. The main body of the long-stroke gripper 2-5-2 is a long straight rod, which passes through the through hole set in the center of the limit block 2-5-3 and the sampling tube piston 2-7-1, and a piston is set at each end of the rod. The secondary sampling tube 2-7 and the corresponding cylinder are clearance-matched, and the sampling tube piston 2-7-1 and the corresponding cylinder are sealed; one piston of the long-stroke gripper 2-5-2 is sealed with the cylinder 2-5-1, and the other piston is located inside the sampling tube body 2-7-2 of the secondary sampling tube 2, and the two are sealed.

[0037] like Figure 3 As shown, the displacement sensing mechanism 2-2 includes a coaxially arranged rod located outside the transfer mechanism cylinder, on which are provided two freely movable magnetic position marking blocks; on the piston of the long-stroke gripper located at the closed end of the cylinder 2-5-1 and the sampling tube piston 2-7-1 located in the long-stroke pressure-maintaining cylinder 2-4, magnets corresponding to the position marking blocks are provided respectively.

[0038] like Figure 4 As shown, the transfer mechanism 2 also includes two groups of water filling and return interfaces 2-3 connected to the inside of the cylinder, and each interface is connected to the high-pressure pump group 4 through a pipeline, and a switch valve is provided on the pipeline. The two groups of interfaces are respectively located on the piston on one side of the closed end of the long-stroke gripping mechanism 2-5 and on both sides of the sampling tube piston 2-7-1 in the long-stroke pressure-maintaining cylinder 2-4. As an example, one group of interfaces is located at both ends of the long-stroke gripping mechanism cylinder 2-5-1, and the other group of interfaces is located at both ends of the long-stroke pressure-maintaining cylinder 2-4. The transfer mechanism 2 also includes two groups of overflow valve interfaces 2-6 connected to the inside of the cylinder, which are respectively located opposite to each water filling and return interface 2-3. The overflow valve interface 2-6 is connected to the pressure-maintaining overflow valve (not shown in the figure) for maintaining pressure.

[0039] like Figure 6 , 7 As shown, the culture kettle mechanism 3 includes a culture kettle transfer cylinder 3-1, a three-way ball valve 3-2 and a culture kettle body 3-4 which are sealed and connected in sequence. The culture kettle transfer cylinder 3-1 and the three-way ball valve 3-2, and the three-way ball valve 3-2 and the culture kettle body 3-4 are sealed and connected by a clamp 3-3. One end of the cylinder of the culture kettle transfer cylinder 3-1 is closed, and a limit block is provided in the cylinder; the main body of the transfer gripper 3-9 is a rod, which passes through a through hole provided in the center of the limit block, and a piston and a cylindrical boss are provided at both ends thereof; the piston and the cylinder are sealed, and the cylindrical boss can extend into the valve core channel of the three-way ball valve 3-2. A group of water filling and water return interfaces connected to the inside of the cylinder are provided at the closed end of the transfer cylinder 3-1 of the culture kettle, and each interface is connected to the high-pressure pump group 4 through a pipeline, and a switch valve is provided on the pipeline (or between the interface and the cylinder, or between the interface and the pipeline); one end of the cylinder of the culture kettle body 3-4 is closed, and a culture kettle ball valve 3-8 is provided at its open end. A pressure gauge is provided at the closed end of the culture kettle body 3-4 to monitor its internal pressure. The three-way ball valve 3-2 has a matching interface with the pressure-maintaining cylinder ball valve 1-4 and the transfer mechanism ball valve 2-1, and can be sealed and connected through a clamp.

[0040] By utilizing the high-pressure pump group 4 and the change in the high-pressure water flow direction in the two groups of water filling and return interfaces 2-3, the piston of the long-stroke gripper 2-5-2 and the piston of the sampling tube 2-7-1 can be pushed to move respectively, thereby driving the displacement of the secondary sampling tube 2-7 and the long-stroke gripper 2-5-2 respectively. In the displacement sensing mechanism 2-2, at the same time, the magnets provided on the piston of the long-stroke gripper 2-5-2 and the sampling tube piston 2-7-1 are used to monitor the positions of the long-stroke gripper 2-5-2 and the secondary sampling tube 2-7 in real time, so as to control the long-stroke gripper 2-5-2 and the secondary sampling tube 2-7. Thus, each operation step of secondary sampling, retreat after sampling, and sample transfer is realized.

[0041] In the present invention: the sampling mechanism 1 is used for sampling sediments on the seabed, the transfer mechanism 2 is used to transfer the seabed sediment samples in the sampling mechanism 1 to the culture kettle mechanism 3, the culture kettle mechanism 3 is used for subsequent microbial culture, and the high-pressure pump group 4 is used as a pressure source to drive the long-stroke gripper 2-5-2, the secondary sampling tube 2-7 and the transfer gripper 3-9 to move. The support seat of the bracket 5 is used to carry the main components, which can be manually pushed for installation and connection, or transported out of the bracket. The lower end face of the sampler 1-1 is a sampling opening, which can be directly inserted into the seabed sediment. The mechanical arm of the underwater ROV performs sampling and return operations by grabbing the ball handle. The accumulator 1-3 is a conventional accumulator 1-3, which is used to maintain the pressure stability of the sampler 1-1 in the pressure-maintaining cylinder 1-2. The pressure-maintaining cylinder ball valve 1-4 is a conventional ball valve, which can be opened electrically or manually to control communication with the outside world.

[0042] The transfer mechanism ball valve 2-1 is a conventional switch valve, which can be adjusted manually or electrically, and is fixedly connected to the sampling mechanism 1 or the culture kettle mechanism 2 by a clamp. The long-stroke pressure-maintaining cylinder 2-4 is a pressure-resistant cylindrical cylinder, which is used to temporarily store seabed sediment samples. The first water filling and return interface 2-3-1, the second water filling and return interface 2-3-2 and the overflow valve interface 2-6 are provided on its outer wall. The long-stroke gripping mechanism cylinder 2-5-1 is a cylindrical cylinder, which uses the internal piston and limit block 2-5-3 to achieve the axial movement limit and displacement distance limit of the long-stroke gripper 2-5-2. The third water filling and return interface 2-3-3 and the fourth water filling and return interface 2-3-4 are provided on its outer wall. Figure 4As shown, when water is filled into the first water filling and return interface 2-3-1, water can push the sampling tube piston 2-7-1 to drive the secondary sampling tube 2-7 to move to the left (so that the secondary sampling tube 2-7 is returned to the long-stroke pressure-maintaining cylinder 2-4). When water is filled into the second water filling and return interface 2-3-2, the secondary sampling tube 2-7 can be moved to the right (so that the secondary sampling tube 2-7 extends out of the long-stroke pressure-maintaining cylinder 2-4), and further drive the long-stroke gripper 2-5-2 to move to the right in the later stage of the stroke. When water is filled into the third water filling and return interface 2-3-3, water can push the left piston of the long-stroke gripper 2-5-2 to move to the left, and further drive the secondary sampling tube 2-7 to move to the left in the later stage of the stroke (so that the secondary sampling tube 2-7 is returned to the long-stroke pressure-maintaining cylinder 2-4). When water is filled into the fourth water filling and return interface 2-3-4, the water can push the left piston of the long-stroke gripper 2-5-2 to move to the right (pushing the sample in the secondary sampling tube 2-7 to move to the right).

[0043] The secondary sampling tube 2-7 is a cylindrical body, and its open end can pass through the transfer mechanism ball valve 2-1 and the pressure-maintaining cylinder ball valve 1-4, and extend into the sampler 1-1 for secondary sampling; its open end can also extend into the valve core of the three-way ball valve, and the sample transfer is completed under the push of the piston of the long-stroke gripper 2-5-2. Therefore, the valve core channels of the three ball valves should have matching or identical radial dimensions for operation.

[0044] The culture kettle transfer cylinder 3-1 is a cylindrical pressure-resistant cylinder, which is used to transfer the sediment sample transferred to the culture kettle three-way ball valve 3-2 to the culture kettle body 3-4 again. The culture kettle body 3-4 is a cylindrical pressure-resistant cylinder, which is used to finally store the seabed sediment samples. The sealing end cover at the lower end has a through hole for connecting the pressure gauge 3-7 to display the pressure in the cylinder. Two through holes are opened on the side wall of the culture kettle body 3-4, which are the fifth water filling and return interface 3-5 and the sixth water filling and return interface 3-6 for connecting the high-pressure pump group 4. A cylindrical boss is set at the lower end of the transfer gripper 3-9, which is used to transfer the sediment sample from the valve core of the three-way ball valve 3-2 to the culture kettle body 3-4.

[0045] The method of using the device of the present invention is exemplified as follows:

[0046] (1) Sampling operation:

[0047] The sampling mechanism 1 is carried by an underwater ROV and placed on the seabed. The manipulator grabs the spherical gripper above the sampler 1-1 to detach it from the mounting seat. The manipulator is controlled to make the sampler 1-1 penetrate into the seabed to obtain samples of seabed sediments. The pressure-maintaining cylinder ball valve 1-4 is opened with the assistance of the manipulator or electrically to connect the pressure-maintaining cylinder 1-2 with the external seawater. The manipulator is controlled to insert the sampler 1-1 into the pressure-maintaining cylinder 1-2, and the pressure-maintaining cylinder ball valve 1-4 is closed. The accumulator 1-3 ensures that the pressure in the pressure-maintaining cylinder 1-2 is stable.

[0048] (2) First transfer operation

[0049] The sampling mechanism 1 is carried to the ship by ROV. Close the transfer mechanism ball valve 2-1, and pump high-pressure water into the first water filling and return interface 2-3-1 and the third water filling and return interface 2-3-3 in the transfer mechanism 2 until the overflow valve discharges water, and the pressure in the pressure-maintaining cylinder is kept stable by the overflow valve. At this time, the long-stroke gripper 2-5-2 and the secondary sampling tube 2-7 are located at the leftmost side of the long-stroke gripping mechanism 2-5 and the long-stroke pressure-maintaining cylinder 2-4 respectively. Fix the pressure-maintaining cylinder ball valve 1-4 of the sampling mechanism 1 and the transfer mechanism ball valve 2-1 of the transfer mechanism 2 through a clamp, and open the pressure-maintaining cylinder ball valve 1-4 and the transfer mechanism ball valve 2-1 at the same time. Fill the second water filling and return interface 2-3-2 with water, drive the secondary sampling tube 2-7 to insert into the sampler 1-1, and the long-stroke gripper 2-5-2 moves to the right following the secondary sampling tube 2-7. After obtaining the seabed sediment, water is filled into the third water filling and return interface 2-3-3 to drive the long-stroke gripper 2-5-2 to retract the secondary sampling tube 2-7, and close the pressure-maintaining cylinder ball valve 1-4 and the transfer mechanism ball valve 2-1.

[0050] (3) Second transfer operation

[0051] Adjust the three-way ball valve 3-2 of the culture kettle so that the culture kettle body 3-4 is connected to the culture kettle transfer cylinder 3-1 and is not connected to the outside world. Inject high-pressure water into the water inlet 3-5 of the culture kettle, and keep the pressure in the culture kettle stable through the overflow valve of the water outlet 3-5 of the culture kettle. Fix the side outlet of the three-way ball valve 3-2 of the culture kettle with the transfer mechanism ball valve 2-1 through a clamp, adjust the three-way ball valve 3-2 of the culture kettle, open the transfer mechanism ball valve 2-1, and connect the side outlet of the three-way ball valve 3-2 of the culture kettle with the transfer mechanism ball valve 2-1. Fill the second water filling and return interface 2-3-2 with water to drive the secondary sampling tube 2-7 to insert it into the side inlet of the transfer mechanism ball valve 2-1, fill the fourth water filling and return interface 2-3-4 with water to drive the long-stroke gripper 2-5-2 to squeeze the sediment into the culture kettle three-way ball valve 3-2, then fill the first water filling and return interface 2-3-1 and the fourth water filling and return interface 2-3-4 with water, and retract the secondary sampling tube 2-7 and the long-stroke gripper 2-5-2.

[0052] (4) Transfer of culture vessel

[0053] The three-way ball valve 3-2 of the culture kettle is adjusted to connect the culture kettle body 3-4 with the culture kettle transfer cylinder 3-1, and the culture kettle transfer gripper 3-9 is driven by injecting high-pressure water to transfer the sediment sample in the culture kettle three-way ball valve 3-2 to the culture kettle body 3-4.

[0054] (5) Body detachment

[0055] Close the culture kettle ball valve 3-8, separate the culture kettle body 3-4 from the culture kettle three-way ball valve 3-2, and complete the transfer operation.

Claims

1. A deep-sea sediment pressure-maintaining transfer device, characterized in that: It includes: sampling mechanism, transfer mechanism, culture kettle mechanism and high-pressure pump group; among which, The sampling mechanism comprises a sampler, a pressure-maintaining cylinder, an accumulator and a pressure-maintaining cylinder ball valve; the sampler is a hollow pipe fitting, the lower end of which is a sampling opening, the upper end is provided with a sealing end cover, and a gripper is provided on the sealing end cover; the pressure-maintaining cylinder is a hollow pipe fitting with an upper end opening, the sampler can be inserted into the pressure-maintaining cylinder and form a sealing fit; the lower end of the pressure-maintaining cylinder is connected to the pressure-maintaining cylinder ball valve, and the accumulator is connected to the side wall of the pressure-maintaining cylinder through a pipeline; The transfer mechanism comprises a long-stroke gripping mechanism, a long-stroke pressure-maintaining cylinder and a transfer mechanism ball valve which are arranged in sequence; the long-stroke pressure-maintaining cylinder comprises a cylinder body, a secondary sampling tube and a sampling tube piston; the long-stroke gripping mechanism comprises a cylinder body, a long-stroke gripper and a limit block; wherein the cylinder body of the long-stroke pressure-maintaining cylinder is a hollow long cylinder with openings at both ends, one end of which is fixedly connected to the cylinder body of the long-stroke gripping mechanism, and the other end is sealingly connected to the transfer mechanism ball valve; the secondary sampling tube is fixedly connected to the sampling tube piston with its closed end, and its open end faces the transfer mechanism ball valve valve; the cylinder of the long-stroke gripping mechanism is a hollow long cylinder with one end closed, and a limit block is fixed inside it; the main body of the long-stroke gripper is a long straight rod, which passes through the through hole set in the center of the limit block and the sampling tube piston and has a piston at each end; the transfer mechanism also includes two groups of water filling and water return interfaces connected to the inside of the cylinder, each interface is connected to the high-pressure pump group through a pipeline, and a switch valve is provided on the pipeline; the two groups of interfaces are respectively located on both sides of the piston on the closed end side of the long-stroke gripping mechanism, and on both sides of the sampling tube piston in the long-stroke pressure-maintaining cylinder; The culture kettle mechanism includes a culture kettle transfer cylinder, a three-way ball valve and a culture kettle body which are sealed and connected in sequence; one end of the cylinder of the culture kettle transfer cylinder is closed, and a limit block is provided in the cylinder; the main body of the transfer gripper is a rod, the rod passes through a through hole provided in the center of the limit block, and a piston and a cylindrical boss are provided at both ends thereof respectively; a group of water filling and returning interfaces connected to the inside of the cylinder are provided at the closed end of the culture kettle transfer cylinder, and each interface is connected to a high-pressure pump group through a pipeline; one end of the cylinder of the culture kettle body is closed, and a culture kettle ball valve is provided at its open end.

2. The deep-sea sediment pressure-maintaining transfer device according to claim 1, characterized in that: The device also includes a displacement sensing mechanism; the displacement sensing mechanism includes a coaxially arranged rod located outside the transfer mechanism cylinder, and two freely movable magnetic position marking blocks are provided on the rod; magnets corresponding to the position marking blocks are provided on the long-stroke gripper piston located at the closed end of the cylinder and the sampling tube piston located in the long-stroke pressure-maintaining cylinder.

3. The deep-sea sediment pressure-maintaining transfer device according to claim 1, characterized in that: A set of overflow valve interfaces connected to the inside of the cylinder are respectively provided on the outside of the cylinder of the long-stroke pressure-maintaining cylinder and the long-stroke gripping mechanism, and the overflow valve interfaces are connected to the pressure-maintaining overflow valve for maintaining pressure.

4. The deep-sea sediment pressure-maintaining transfer device according to claim 1, characterized in that: There is a clearance fit between the secondary sampling tube and the cylinder, and a sealing fit between the sampling tube piston and the cylinder; there is a sealing fit between one piston of the long-stroke gripper and the cylinder of the long-stroke gripping mechanism, and the other piston is located inside the secondary sampling tube and there is a sealing fit between the two; there is a sealing fit between the piston and the cylinder in the culture kettle transfer cylinder.

5. The deep-sea sediment pressure-maintaining transfer device according to claim 1, characterized in that: The limit block of the long-stroke grabbing mechanism is located inside the opening end of the cylinder.

6. The deep-sea sediment pressure-maintaining transfer device according to claim 1, characterized in that: Among the two groups of water filling and water return interfaces, one group of interfaces is located at both ends of the long-stroke grabbing mechanism cylinder, and the other group of interfaces is located at both ends of the long-stroke pressure-maintaining cylinder.

7. The deep-sea sediment pressure-maintaining transfer device according to claim 1, characterized in that: The three-way ball valve has matching interfaces with the pressure-maintaining cylinder ball valve and the transfer mechanism ball valve, and can be sealed and connected via a clamp.

8. The deep-sea sediment pressure-maintaining transfer device according to claim 1, characterized in that: A pressure gauge is provided at the closed end of the culture vessel body.

9. The deep-sea sediment pressure-maintaining transfer device according to claim 1, characterized in that: The culture kettle transfer cylinder and the three-way ball valve, as well as the three-way ball valve and the culture kettle body are sealed and connected respectively through clamps.

10. The deep-sea sediment pressure-maintaining transfer device according to any one of claims 1 to 9, characterized in that: The device also comprises a support, which is composed of a base and a plurality of movable support seats. The support seats are placed on the base, and the sampling mechanism, the transfer mechanism and the culture kettle mechanism are respectively fixed on the support seats.

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