A deep-water pressure-maintaining vibration sampling and operation method

Abstract

The present invention discloses a deep-water pressure-maintaining vibration sampling device and an operation method, which relates to deep-sea exploration technology, including a frame with a base, on which a vibrator, a rotating disc-type pipe storage rack, a power head, a pipe transfer manipulator, a lifting mechanism and a clamping mechanism are arranged, wherein the vibrator is used to enable the vibration sampling device to drill a sampling tube into a rock layer during marine operation; the lifting mechanism is used to lift or lower the sampling tube; the clamping mechanism is used to clamp the sampling tube or the pressure-maintaining tube during the sampling tube replacement process and the pressure-maintaining tube loading process; the power head is used to load and unload the upper threaded top cover of the sampling tube and the pressure-maintaining top cover of the pressure-maintaining tube; the pipe transfer manipulator is used to transfer the sampling tube or the pressure-maintaining tube during the sampling tube replacement process and the pressure-maintaining tube loading process; the rotating disc-type pipe storage rack is used to store the sampling tube and the pressure-maintaining tube. The present invention places the sampling tube in the pressure-maintaining tube so that the mechanism can realize pressure maintenance of the vibration coring sample.

Description

Technical Field

[0001] The invention relates to deep sea exploration technology, and in particular to a deep water pressure-maintaining vibration sampling and operation method. Background Art

[0002] Seabed sediment sampling is of great significance for understanding the changes in the earth's environment, predicting long-term climate changes in the future, searching for new energy sources on the seabed - natural gas hydrates, studying the diversity of marine extreme microorganisms, and developing and applying biological genetic resources. However, when using traditional sampling equipment for sampling, the interaction between the sampler and the sediment often causes the original sequence of the sediment sample to be mixed or bent, destroying the integrity of the sample information record; when collecting natural gas hydrates and their overlying sediments, the failure to maintain pressure sampling causes the loss of natural gas hydrates and other gas phase components in the sample, and the original composition and state of the sediment are difficult to accurately reflect, which will have an adverse impact on analyzing the mineralization conditions of natural gas hydrates, finding characteristic signs of hydrate deposits, delineating the distribution range of hydrates, and conducting resource prospect evaluation; when collecting seabed sediment samples containing piezophilic microorganisms, the failure to maintain pressure sampling will lead to reduced metabolic activity of piezophilic bacteria, long generation time, weak growth, and long growth cycle.

[0003] However, existing seabed sediment sampling operation mechanisms have the problem of being unable to maintain pressure on vibration coring samples and being inconvenient for continuous operation. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a deep-water pressure-maintaining vibration sampling and operation method. During the seabed sediment sampling operation, the sampling tube is placed in a pressure-maintaining tube so that the mechanism can maintain the pressure of the vibration coring sample, while solving the problem of continuous operation on the seabed.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] A deepwater pressure-maintaining vibration sampling device comprises a frame with a base, on which are arranged a vibrator, a rotating disc pipe storage rack, a power head, a pipe transfer manipulator, a lifting mechanism and a clamping mechanism, wherein:

[0007] The vibrator is used to enable the vibration sampling device to drill the sampling tube into the rock and soil layer during marine operations;

[0008] The lifting mechanism is used to lift up or lower the sampling tube;

[0009] The clamping mechanism is used to clamp the sampling tube or the pressure-maintaining tube during the sampling tube replacement process and the pressure-maintaining tube loading process;

[0010] The power head is used for loading and unloading the threaded top cover on the upper end of the sampling tube and the pressure-maintaining top cover of the pressure-maintaining tube;

[0011] The tube transfer manipulator is used to transfer the sampling tube or the pressure-maintaining tube during the sampling tube replacement process and the pressure-maintaining tube loading process;

[0012] The rotating disc type tube storage rack is used for storing sampling tubes and pressure-maintaining tubes.

[0013] The deep-water pressure-maintaining vibration sampling device as described above, further: the vibrator includes a vibrator housing, a vibration motor, and an eccentric weight, wherein two vibration motors are provided in the vibrator housing, the two vibration motors are arranged on the inner sides of the two ends of the vibrator housing, and the output shaft of each vibration motor is connected to an eccentric weight that is offset from the axis of the output shaft by a set distance.

[0014] The deep-water pressure-maintaining vibration sampling device as described above, further: the lifting mechanism includes a top clamp, an upper bottom clamp and a lower bottom clamp, wherein the top clamp is arranged below the power head and has two V-shaped clamp heads, and the two V-shaped clamp heads move toward each other to clamp the sampling tube; the upper bottom clamp and the lower bottom clamp are arranged directly below the top clamp, and the upper bottom clamp and the lower bottom clamp each have two V-shaped clamp heads, and the two V-shaped clamp heads move toward each other to clamp the sampling tube.

[0015] The deep-water pressure-maintaining vibration sampling device as described above is further configured as follows: the top clamp is also equipped with a clamp stroke hydraulic cylinder and a top clamp clamp hydraulic cylinder, the top clamp stroke hydraulic cylinder is used to drive the two V-shaped clamp heads of the top clamp to move up and down; the top clamp clamp hydraulic cylinder is used to drive the two V-shaped clamp heads of the top clamp to move toward each other.

[0016] The deep-water pressure-maintaining vibration sampling device as described above, further: the lifting mechanism includes a plurality of guide pulleys and at least one winch, the guide pulley is arranged on the upper part of the frame, and the winch is connected to the sampling tube through the guide pulley by a rope.

[0017] The deep-water pressure-maintaining vibration sampling device as described above, further: the pressure-maintaining tube includes a pressure-maintaining top cover, a pressure-maintaining outer tube and a pressure-maintaining base from top to bottom, wherein the pressure-maintaining outer tube is provided with a cavity for accommodating the sampling tube, the pressure-maintaining base is provided with a one-way valve and an overflow valve, the set pressure of the overflow valve is greater than the formation pressure of the formation where the sample is located during the sampling operation to ensure that the sample does not lose pressure in the pressure-maintaining tube, and the pressure-maintaining top cover is used to seal and close the cavity of the pressure-maintaining outer tube.

[0018] The deep-water pressure-maintaining vibration sampling device as described above further has: a knife edge is provided at the bottom of at least part of the sampling tube.

[0019] The deep-water pressure-maintaining vibration sampling device as described above further includes: a frequency conversion controller, a transformer group, a measurement and control unit, a junction box, a counterweight block and a weighing head.

[0020] A deepwater pressure-maintaining vibration sampling operation method, which utilizes the vibration sampling device as described above, comprises the following steps:

[0021] After the drilling operation is completed, the sample tube is extracted by the lifting mechanism, and the upper and lower bottom clamps are used to clamp the sample tube;

[0022] Use the power head to remove the thread on the upper end of the sampling tube, and use the tube transfer manipulator to temporarily store the sampling tube filled with samples in the rotating disc tube storage rack;

[0023] Use the pipe transfer robot to take the pressure-maintaining cylinder out of the rotating disc pipe storage rack and place it under the power head. Clamp the pressure-maintaining cylinder with the upper and lower bottom clamps, and use the power head to remove the pressure-maintaining top cover.

[0024] Use the tube transfer robot to take out the sample tube filled with samples from the rotating disc tube storage rack and put it into the pressure-maintaining cylinder under the power head;

[0025] Use the power head to install the top cover of the pressure-maintaining cylinder onto the pressure-maintaining cylinder to achieve the pressure-maintaining effect;

[0026] Use a pipette manipulator to move the pressure-maintaining cylinder containing the sample tubes to the rotating disc tube storage rack.

[0027] The deepwater pressure-maintaining vibration sampling method as described above further comprises the following steps: when the hole diameter of the drilling operation is reduced, a sampling tube with a knife edge is lowered to expand the hole, and then a new vibration sampling is performed.

[0028] The deepwater pressure-maintaining vibration sampling method as described above further includes: before the drilling operation, the following steps:

[0029] The vibration sampling device is hoisted and placed in the working area on the starboard side of the rear deck of the ship using a ship-borne telescopic crane;

[0030] Use a telescopic crane to slowly raise the vibration sampling device;

[0031] Steady the base of the vibration sampling device, lift the vibration sampling device with a telescopic crane, slowly release it over the stern and lower it into the water, and at the same time release the vibrator and sensor cable into the water;

[0032] When the vibrating sampling device touches the seabed, the crane is commanded to pre-release a number of steel wire ropes according to the length of the sampling tube and the flow direction and velocity of the water;

[0033] After the vibration sampling device touches the bottom, the vibrator is started to drill.

[0034] The deepwater pressure-maintaining vibration sampling operation method as described above further comprises: after the drilling operation, the following steps are further included:

[0035] Observe the display status of the navigation positioning display and the footage display device, and when the vibration sampling device reaches a predetermined depth, retract the vibration sampler;

[0036] After the vibration sampling device is lifted off the water surface, the vibration sampling device is hooked with an iron hook and slowly lifted onto the deck with the cooperation of a telescopic crane and then placed in the working area.

[0037] Compared with the prior art, the present invention has the following beneficial effects: the present invention can greatly improve the success rate of pressure maintenance by maintaining pressure on the vibration coring sample through the pressure maintaining cylinder, and avoid the pressure loss of the sample from the seabed to the deck of the mother ship. The operation mode of vibration sampling plus pressure maintaining cylinder minimizes the disturbance of the sample and ensures the originality and purity of the sample.

[0038] The present invention solves the problem that the vibration sampler cannot be connected to the sampling tube by installing a rotating power head under the vibrator, greatly increases the drilling and coring depth of the vibration sampler, and expands the use range of the vibration sampler. The installation of the top clamp can play a role in straightening and centering when the power head connects and disconnects the sampling tube, reducing the difficulty of connecting and disconnecting the sampling tube of the seabed vibration sampler. The top clamp stroke cylinder can control the upper and lower positions of the top clamp, which can avoid the collision of the sampling tube and the top clamp, and the position of the top clamp clamping the sampling tube can also be freely selected.

[0039] The present invention improves the verticality of the sampling tube and the drilling tool by arranging double bottom clamps (upper bottom clamp and lower bottom clamp), avoids the problem of misalignment of the sampling tube, the pressure-maintaining cylinder and the power head when a single clamp is used, and greatly improves the success rate of the operation of adding the sampling tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 It is a structural schematic diagram of a vibration sampling device according to an embodiment of the present invention;

[0042] Figure 2 A top view of a vibration sampling device according to an embodiment of the present invention;

[0043] Figure 3 A first view of the internal structure of the vibration exciter according to an embodiment of the present invention;

[0044] Figure 4 A second view of the internal structure of the vibration exciter according to an embodiment of the present invention;

[0045] Figure 5 is a side view of a vibration exciter according to an embodiment of the present invention;

[0046] Figure 6 A top clamp of the top clamp of an embodiment of the present invention;

[0047] Figure 7 It is a schematic diagram of the structure of a sampling tube according to an embodiment of the present invention;

[0048] Figure 8 It is a schematic structural diagram of a pressure-maintaining tube according to an embodiment of the present invention;

[0049] Fig. 9 It is a schematic structural diagram of a pressure-maintaining tube with a knife edge according to an embodiment of the present invention;

[0050] Fig.10 It is a schematic structural diagram of a load-bearing head according to an embodiment of the present invention.

[0051] Among them: 1. Frame; 101. Guide pulley; 102. Winch; 103. Base; 2. Vibrator; 201. Vibrator housing; 202. Vibration motor; 203. Eccentric weight; 3. Rotating disc pipe storage rack; 4. Power head; 5. Pipe transfer manipulator; 6. Top clamp; 601. Top clamp stroke hydraulic cylinder; 602. Top clamp clamp hydraulic cylinder; 7. Upper bottom clamp; 8. Lower bottom clamp; 9. Sampling tube; 901. Knife edge; 10. Pressure-maintaining tube; 1001. Pressure-maintaining top cover; 1002. Pressure-maintaining outer cylinder; 1003. Pressure-maintaining base; 1004. Check valve; 1005. Overflow valve; 11. Frequency converter; 12. Transformer group; 13. Measurement and control unit; 14. Junction box; 15. Counterweight; 16. Measurement and control unit; 17. Load-bearing head. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0053] Example:

[0054] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations of the embodiments of the present invention are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0055] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0056] In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly defined. In addition, unless otherwise clearly defined and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present invention, 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" or "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" or "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.

[0058] See also Figures 1 to 8 , Figure 1It is a structural schematic diagram of a vibration sampling device according to an embodiment of the present invention; Figure 2 A top view of a vibration sampling device according to an embodiment of the present invention; Figure 3 A first view of the internal structure of the vibration exciter according to an embodiment of the present invention; Figure 4 A second view of the internal structure of the vibration exciter according to an embodiment of the present invention; Figure 5 is a side view of a vibration exciter according to an embodiment of the present invention; Figure 6 A top clamp of the top clamp of an embodiment of the present invention; Figure 7 It is a schematic diagram of the structure of a sampling tube according to an embodiment of the present invention; Figure 8 It is a schematic structural diagram of a pressure-maintaining tube according to an embodiment of the present invention; Fig. 9 It is a schematic structural diagram of a pressure-maintaining tube with a knife edge according to an embodiment of the present invention; Fig.10 It is a schematic structural diagram of a load-bearing head according to an embodiment of the present invention.

[0059] The present invention provides a deep-water pressure-maintaining vibration sampling and operation method. During the seabed sediment sampling operation, a sampling tube is placed in a pressure-maintaining tube so that a mechanism can maintain the pressure of the vibration coring sample, and the problem of continuous operation on the seabed can be solved at the same time.

[0060] A deepwater pressure-maintaining vibration sampling device comprises a frame 1 with a base 103, on which are arranged a vibrator 2, a rotating disc-type pipe storage rack 3, a power head 4, a pipe transfer manipulator 5, a lifting mechanism and a clamping mechanism, wherein the vibrator 2 is used to enable the vibration sampling device to drill a sampling tube 9 into a rock layer during marine operations; the lifting mechanism is used to lift or lower the sampling tube 9; the clamping mechanism is used to clamp the sampling tube 9 or the pressure-maintaining tube 10 during the sampling tube 9 replacement process and the pressure-maintaining tube 10 loading process; the power head 4 is used to load and unload the upper threaded top cover of the sampling tube 9 and the pressure-maintaining top cover 1001 of the pressure-maintaining tube 10; the pipe transfer manipulator 5 is used to transfer the sampling tube 9 or the pressure-maintaining tube 10 during the sampling tube 9 replacement process and the pressure-maintaining tube 10 loading process; the rotating disc-type pipe storage rack 3 is used to store the sampling tube 9 and the pressure-maintaining tube 10. By maintaining the pressure of the sample in the sampling tube 9 through a pressure-maintaining cylinder, the success rate of pressure maintenance can be greatly improved, and the pressure loss of the sample from the seabed to the deck of the mother ship can be avoided. The operation mode of vibration sampling + pressure-maintaining cylinder minimizes the disturbance of the sample to the greatest extent, ensures the originality and purity of the sample, and at the same time, the sampling tube 9 can be continuously replaced during the operation process to improve the operation efficiency. In addition, by installing a rotary power head 4 under the exciter 2, the problem that the vibration sampler cannot be connected to the sampling tube 9 is solved, which greatly increases the drilling and coring depth of the vibration sampler and expands the scope of use of the vibration sampler.

[0061] As an optional implementation, in some embodiments, the exciter 2 includes an exciter housing 201, an exciter motor 202, and an eccentric weight 203, wherein two exciter motors 202 are provided in the exciter housing 201, and the two exciter motors 202 are arranged on the inner sides of the two ends of the exciter housing 201, and the output shaft of each exciter motor 202 is connected to an eccentric weight 203 that is offset from the axis of the output shaft by a set distance.

[0062] As an optional embodiment, in some embodiments, the lifting mechanism includes a top clamp 6, an upper bottom clamp 7 and a lower bottom clamp 8, wherein the top clamp 6 is arranged below the power head 4 and has two V-shaped clamp heads, and the two V-shaped clamp heads move toward each other to clamp the sampling tube 9; the upper bottom clamp 7 and the lower bottom clamp 8 are arranged directly below the top clamp 6, and the upper bottom clamp 7 and the lower bottom clamp 8 each have two V-shaped clamp heads, and the two V-shaped clamp heads move toward each other to clamp the sampling tube 9. In this embodiment, the installation of the top clamp 6 can play a role in straightening and centering when the power head 4 receives and unloads the sampling tube 9, reducing the difficulty of the seabed vibration sampler receiving and unloading the sampling tube 9. The stroke cylinder of the top clamp 6 can control the upper and lower positions of the top clamp 6, can avoid the collision of the sampling tube 9 with the top clamp 6, and can also freely select the position of the top clamp 6 to clamp the sampling tube 9.

[0063] As an optional embodiment, in some embodiments, the top clamp 6 is further configured with a clamp stroke hydraulic cylinder and a top clamp 6 clamp hydraulic cylinder. The top clamp 6 stroke hydraulic cylinder is used to drive the two V-shaped clamp heads of the top clamp 6 to move up and down; the top clamp 6 clamp hydraulic cylinder is used to drive the two V-shaped clamp heads of the top clamp 6 to move toward each other. In this embodiment, the use of the top clamp 6 can make the axis of the sampling tube 9 or the pressure-maintaining cylinder and the power head 4 aligned. By setting up a double bottom clamp (upper bottom clamp 7, lower bottom clamp 8), the verticality of the sampling tube 9 and the drilling tool is improved, avoiding the problem of misalignment of the sampling tube 9, the pressure-maintaining cylinder and the power head 4 when a single clamp is used, and greatly improving the success rate of the operation of adding the sampling tube 9.

[0064] As an optional embodiment, in some embodiments, the lifting mechanism includes a plurality of guide pulleys 101 and at least one winch 102, the guide pulley 101 is arranged on the upper part of the frame 1, and the winch 102 is connected to the sampling tube 9 through the guide pulley 101 by a rope.

[0065] As an optional implementation, in some embodiments, the pressure-maintaining tube 10 includes, from top to bottom, a pressure-maintaining top cover 1001, a pressure-maintaining outer cylinder 1002 and a pressure-maintaining base 1003, wherein the pressure-maintaining outer cylinder 1002 is provided with a cavity for accommodating the sampling tube 9, and the pressure-maintaining base 1003 is provided with a one-way valve 1004 and an overflow valve 1005, and the set pressure of the overflow valve 1005 is greater than the formation pressure of the formation where the sample is located during the sampling operation to ensure that the sample does not lose pressure in the pressure-maintaining tube 10, and the pressure-maintaining top cover 1001 is used to seal and close the cavity of the pressure-maintaining outer cylinder 1002.

[0066] As an optional implementation, in some embodiments, a knife edge 901 is provided at the bottom of at least a portion of the sampling tube 9 .

[0067] As an optional implementation, in some embodiments, it also includes a frequency conversion controller 11, a transformer group 12, a measurement and control unit 1613, a junction box 14 and a counterweight 15.

[0068] A deepwater pressure-maintaining vibration sampling operation method, which utilizes the vibration sampling device as described above, comprises the following steps:

[0069] Step 101: After the drilling operation is completed, the sample tube is extracted by using the lifting mechanism, and the upper bottom clamp and the lower bottom clamp are used to clamp the sample tube.

[0070] Step 102: Use a power head to remove the threads on the upper end of the sampling tube, and use a tube transfer robot to temporarily store the sampling tube filled with samples in a rotating disc tube storage rack.

[0071] Step 103: Use a pipe transfer robot to take out the pressure-maintaining cylinder from the rotating disc pipe storage rack and place it under the power head. Use the upper bottom clamp and the lower bottom clamp to clamp the pressure-maintaining cylinder, and use the power head to remove the pressure-maintaining top cover.

[0072] Step 104: Use a tube transfer robot to take out the sample tube filled with the sample from the rotating disc tube storage rack and put it into the pressure-maintaining cylinder under the power head.

[0073] Step 105: Use a power head to install the top cover of the pressure-maintaining cylinder onto the pressure-maintaining cylinder to achieve a pressure-maintaining effect.

[0074] Step 106: Use a tube transfer robot to move the pressure-maintaining cylinder containing the sample tube to the rotating disc tube storage rack.

[0075] As an optional implementation, in some embodiments, when the hole diameter of the drilling operation is reduced, a sampling tube with a knife edge is lowered to expand the hole, and then a new vibration sampling is performed.

[0076] As an optional implementation, in some embodiments, the operation method may include:

[0077] Step 201: Use a ship-borne telescopic crane to hang the vibration sampling device in the working area on the starboard side of the rear deck of the ship.

[0078] Step 202: Use a telescopic crane to slowly raise the vibration sampling device.

[0079] Step 203: Steady the base of the vibration sampling device, lift the vibration sampling device with a telescopic crane, slowly release it over the stern and lower it into the water, and at the same time release the vibrator and sensor cable into the water.

[0080] Step 204: When the vibration sampling device touches the seabed, the crane is commanded to pre-release a number of steel wire ropes according to the length of the sampling tube and the flow direction and velocity of the water.

[0081] Step 205: After the vibration sampling device touches the bottom, the vibrator is started to drill.

[0082] Step 206: After the drilling operation is completed, the sample tube is extracted by using the lifting mechanism, and the upper bottom clamp and the lower bottom clamp are used to clamp the sample tube.

[0083] Step 207: Use a power head to remove the threads on the upper end of the sampling tube, and use a tube transfer robot to temporarily store the sampling tube filled with samples in a rotating disc tube storage rack.

[0084] Step 208: Use the pipe transfer robot to take the pressure-maintaining cylinder out of the rotating disc pipe storage rack and place it under the power head. Use the upper bottom clamp and the lower bottom clamp to clamp the pressure-maintaining cylinder, and use the power head to remove the pressure-maintaining top cover.

[0085] Step 209: Use a tube transfer robot to take out the sample tube filled with samples from the rotating disc tube storage rack and put it into the pressure-maintaining cylinder under the power head.

[0086] Step 210: Use a power head to install the top cover of the pressure-maintaining cylinder onto the pressure-maintaining cylinder to achieve a pressure-maintaining effect.

[0087] Step 211: Use a tube transfer robot to move the pressure-maintaining cylinder containing the sample tube to the rotating disc tube storage rack.

[0088] As an optional implementation, in some embodiments, the operation method may include:

[0089] Step 301: Use a ship-borne telescopic crane to hang the vibration sampling device in the working area on the starboard side of the rear deck of the ship.

[0090] Step 302: Use a telescopic crane to slowly raise the vibration sampling device.

[0091] Step 303: Steady the base of the vibration sampling device, lift the vibration sampling device with a telescopic crane, slowly release it over the stern and lower it into the water, and at the same time release the vibrator and sensor cable into the water.

[0092] Step 304: When the vibration sampling device touches the seabed, the crane is commanded to pre-release a number of steel wire ropes according to the length of the sampling tube and the flow direction and velocity of the water.

[0093] Step 305: After the vibration sampling device touches the bottom, the vibrator is started to drill.

[0094] Step 306: After the drilling operation is completed, the sample tube is extracted by using the lifting mechanism, and the upper bottom clamp and the lower bottom clamp are used to clamp the sample tube.

[0095] Step 307: Use a power head to remove the threads on the upper end of the sampling tube, and use a tube transfer robot to temporarily store the sampling tube filled with samples in a rotating disc tube storage rack.

[0096] Step 308: Use the pipe transfer robot to take the pressure-maintaining cylinder out of the rotating disc pipe storage rack and place it under the power head. Use the upper bottom clamp and the lower bottom clamp to clamp the pressure-maintaining cylinder, and use the power head to remove the pressure-maintaining top cover.

[0097] Step 309: Use a tube transfer robot to take out the sample tube filled with samples from the rotating disc tube storage rack and put it into the pressure-maintaining cylinder under the power head.

[0098] Step 310: Use a power head to install the top cover of the pressure-maintaining cylinder onto the pressure-maintaining cylinder to achieve a pressure-maintaining effect.

[0099] Step 311: Use a tube transfer robot to move the pressure-maintaining cylinder containing the sample tube to the rotating disc tube storage rack.

[0100] Step 312: Observe the display status of the navigation positioning display and the footage display device, and when the vibration sampling device reaches a predetermined drilling depth, retract the vibration sampler.

[0101] Step 313: After the vibration sampling device is lifted out of the water, the vibration sampling device is hooked with an iron hook and slowly lifted onto the deck with the cooperation of a telescopic crane and then placed in the working area.

[0102] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0103] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable ordinary technicians in the field to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made based on the essence of the content of the present invention should be included in the protection scope of the present invention.

Claims

1. A deep-water pressure-maintaining vibration sampling device, comprising a frame with a base, characterized in that: The frame is provided with a vibrator, a rotating disc pipe storage rack, a power head, a pipe transfer manipulator, a lifting mechanism and a clamping mechanism, wherein: The vibrator is used to enable the vibration sampling device to drill the sampling tube into the rock and soil layer during marine operations; The power head is installed below the vibrator; The lifting mechanism is used to lift up or lower the sampling tube; The clamping mechanism is used to clamp the sampling tube or the pressure-maintaining tube during the sampling tube replacement process and the pressure-maintaining tube loading process; the clamping mechanism includes a top clamp, an upper bottom clamp and a lower bottom clamp, wherein the top clamp is arranged below the power head and has two V-shaped clamp heads, and the two V-shaped clamp heads move toward each other to clamp the sampling tube; the upper bottom clamp and the lower bottom clamp are arranged directly below the top clamp, and the upper bottom clamp and the lower bottom clamp each have two V-shaped clamp heads, and the two V-shaped clamp heads move toward each other to clamp the sampling tube; the top clamp is also equipped with a top clamp travel hydraulic cylinder and a top clamp clamp hydraulic cylinder, The top clamp stroke hydraulic cylinder is used to drive the two V-shaped clamp heads of the top clamp to move up and down; the top clamp clamp hydraulic cylinder is used to drive the two V-shaped clamp heads of the top clamp to move toward each other; the pressure-maintaining tube includes a pressure-maintaining top cover, a pressure-maintaining outer cylinder and a pressure-maintaining base from top to bottom, wherein the pressure-maintaining outer cylinder is provided with a cavity for accommodating the sampling tube, the pressure-maintaining base is provided with a one-way valve and a relief valve, the set pressure of the relief valve is greater than the formation pressure of the formation where the sample is located during the sampling operation to ensure that the sample does not lose pressure in the pressure-maintaining tube, and the pressure-maintaining top cover is used to seal and close the cavity of the pressure-maintaining outer cylinder; The power head is used for loading and unloading the threaded top cover on the upper end of the sampling tube and the pressure-maintaining top cover of the pressure-maintaining tube; The tube transfer manipulator is used to transfer the sampling tube or the pressure-maintaining tube during the sampling tube replacement process and the pressure-maintaining tube loading process; The rotating disc type tube storage rack is used for storing sampling tubes and pressure-maintaining tubes.

2. The deep-water pressure-maintaining vibration sampling device according to claim 1 is characterized in that: The exciter includes an exciter housing, an exciter motor, and an eccentric weight, wherein two exciter motors are arranged in the exciter housing, the two exciter motors are arranged on the inner sides of the two ends of the exciter housing, and the output shaft of each exciter motor is connected to an eccentric weight that is offset from the axis of the output shaft by a set distance.

3. The deep-water pressure-maintaining vibration sampling device according to claim 1, characterized in that: The lifting mechanism comprises a plurality of guide pulleys and at least one winch, wherein the guide pulley is arranged on the upper part of the frame, and the winch is connected to the sampling tube through the guide pulley via a rope.

4. The deep-water pressure-maintaining vibration sampling device according to claim 1, characterized in that: At least part of the bottom of the sampling tube is provided with a knife edge.

5. A deep-water pressure-maintaining vibration sampling method, characterized in that: Using the vibration sampling device as described in any one of claims 1 to 4, comprising the following steps: After the drilling operation is completed, the sample tube is extracted by the lifting mechanism, and the upper and lower bottom clamps are used to clamp the sample tube; Use the power head to remove the thread on the upper end of the sampling tube, and use the tube transfer manipulator to temporarily store the sampling tube filled with samples in the rotating disc tube storage rack; Use the pipe transfer robot to take the pressure-maintaining cylinder out of the rotating disc pipe storage rack and place it under the power head. Clamp the pressure-maintaining cylinder with the upper and lower bottom clamps, and use the power head to remove the pressure-maintaining top cover. Use the tube transfer robot to take out the sample tube filled with samples from the rotating disc tube storage rack and put it into the pressure-maintaining cylinder under the power head; Use the power head to install the top cover of the pressure-maintaining cylinder onto the pressure-maintaining cylinder to achieve the pressure-maintaining effect; Use a pipette manipulator to move the pressure-maintaining cylinder containing the sample tubes to the rotating disc tube storage rack.

6. The deepwater pressure-maintaining vibration sampling method according to claim 5, characterized in that: When the hole diameter of the drilling operation appears to be reduced, a sampling tube with a knife edge is lowered to expand the hole, and then a new vibration sampling is carried out.

7. The deepwater pressure-maintaining vibration sampling method according to claim 5, characterized in that: Before drilling, it also includes: The vibration sampling device is hoisted and placed in the working area on the starboard side of the rear deck of the ship using a ship-borne telescopic crane; Use a telescopic crane to slowly raise the vibration sampling device; Steady the base of the vibration sampling device, lift the vibration sampling device with a telescopic crane, slowly release it over the stern and lower it into the water, and at the same time release the vibrator and sensor cable into the water; When the vibrating sampling device touches the seabed, the crane is commanded to pre-release a number of steel wire ropes according to the length of the sampling tube and the flow direction and velocity of the water; After the vibration sampling device touches the bottom, the vibrator is started to drill.

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