A wetland carbon sample drilling and sampling device

Abstract

The present invention relates to the technical field of drilling equipment, in particular to a wetland carbon sample drilling and sampling device; it does not require the construction of a drilling platform, effectively isolates the upper muddy water on the wetland, avoids contaminating the carbon sample, and improves the sampling efficiency and sampling accuracy of the wetland underground carbon sample; it includes a floating boat, a ground-holding and water-isolating mechanism installed on the floating boat, and a drilling and sampling mechanism for sampling the formation carbon sample. The ground-holding and water-isolating mechanism includes a storage box slidably installed up and down on the floating boat, an isolation cylinder fixedly installed on the storage box, a lifting drive for providing power for the up and down sliding of the storage box, and a mud and water drainage mechanism. The drilling and sampling mechanism is installed on the storage box. The mud and water drainage mechanism includes a floating plate slidably installed up and down in the isolation cylinder, a mud pump fixedly installed on the floating plate, and a connecting pipe. One end of the connecting pipe is communicated with the output end of the mud pump, and the other end of the connecting pipe extends into the upper part of the storage box; a through hole is provided in the middle of the floating plate.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling equipment, and particularly to a wetland carbon sample drilling and sampling device. Background Art

[0002] Wetlands contain a large amount of carbon and have great economic value; the underground carbon content of wetlands needs to be sampled by drilling.

[0003] For example, the invention patent application with the publication number CN116006109A discloses a drilling device and a drilling method for high-efficiency drilling and sampling and outer pipe following for shaft protection, including a spiral outer pipe; an alloy drill bit disposed at the bottom of the spiral outer pipe; a sampling member disposed inside the spiral outer pipe and rotating relative to the alloy drill bit, and the bottom of the sampling member is communicated with the bottom of the alloy drill bit so that the soil sample generated by the alloy drill bit cutting the land enters the sampling pipe; an upper joint of the inner pipe disposed inside the spiral outer pipe and above the sampling member, an air-permeable notch is provided at one end of the upper joint of the inner pipe away from the sampling member, a blocking member and an elastic member are further provided inside the upper joint of the inner pipe, and a lifting member is provided at one end of the upper joint of the inner pipe away from the sampling member; a cover disposed at the top of the spiral outer pipe. It samples through the sampling pipe. During sampling, the spiral outer pipe and the alloy drill bit are not taken out, which can protect the hole wall and reduce the possibility of collapse and cross-contamination of pollutants.

[0004] However, the above device still has the following defects: Most wetlands are swamps, and it is difficult for conventional drilling and sampling equipment to move forward. It often requires a large amount of manpower and material resources to build a drilling platform, which affects the sampling efficiency of underground carbon samples; during the drilling operation, part of the muddy water in the upper layer of the wetland flows into the borehole through the gap between the drilling tool and the borehole, causing cross-contamination to the carbon samples in each stratum and affecting the sampling accuracy of the carbon samples. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a wetland carbon sample drilling and sampling device that does not require building a drilling platform, effectively isolates the muddy water in the upper layer of the wetland, avoids contaminating the carbon samples, and improves the sampling efficiency and sampling accuracy of wetland underground carbon samples.

[0006] To achieve the above object, the present invention provides the following technical solution: A wetland carbon sample drilling and sampling device, comprising a floating boat, a ground-holding and water-isolating mechanism installed on the floating boat, and a drilling and sampling mechanism for sampling formation carbon samples. The ground-holding and water-isolating mechanism includes a storage tank slidably installed up and down on the floating boat, an isolation cylinder fixedly installed on the storage tank, a lifting drive for providing power for the up and down sliding of the storage tank, and a sludge and water discharge mechanism. The drilling and sampling mechanism is installed on the storage tank. The sludge and water discharge mechanism includes a floating plate slidably installed up and down in the isolation cylinder, a mud pump fixedly installed on the floating plate, and a connecting pipe. One end of the connecting pipe is communicated with the output end of the mud pump, and the other end of the connecting pipe extends into the upper part of the storage tank; a through hole is provided in the middle of the floating plate. Further, the lifting drive can adopt a hydraulic cylinder, a screw drive, or other equivalent drives that can drive the storage tank to move up and down; the central axis of the through hole coincides with the central axis of the isolation cylinder, and the through hole is used for the drill on the drilling and sampling mechanism to pass through; a ring blade is provided at the bottom of the isolation cylinder.

[0007] Preferably, both the mud pump and the connecting pipe are in two groups. The two mud pumps are respectively communicated with the inside of the storage tank through the two connecting pipes. The two connecting pipes are arranged in a staggered manner up and down and spirally wound in the isolation cylinder. The connecting pipe adopts a steel wire hose; further, the steel wire hose adopts a hose with PVC embedded threaded metal wires.

[0008] Preferably, symmetrically arranged balance drive mechanisms are installed on both sides of the floating boat. The balance drive mechanism includes two bending arms fixedly installed on the side wall of the floating boat, a bending drive cylinder for providing power for the bending of the two bending arms, a spiral drum rotatably installed between the two bending arms, and a drive motor for providing power for the rotation of the spiral drum.

[0009] Preferably, the drilling and sampling mechanism includes a frame, a lifting seat slidably mounted up and down on the frame, a lifting driving cylinder for providing power for the up and down movement of the lifting seat, a rotary driver fixedly mounted on the lifting seat, and a plurality of drill pipes detachably connected end to end. At least one drill pipe is provided with an installation cavity and a plurality of through ports communicating with the inside of the installation cavity. An outward expanding sampling assembly is installed in the installation cavity. The outward expanding sampling assembly includes an installation housing, a driving motor fixedly installed in the installation housing, a driving disk fixedly installed at the output end of the driving motor, and a plurality of sampling members. The installation housing is provided with a plurality of sliding grooves arranged radially. The driving disk is provided with a plurality of arc-shaped guide grooves corresponding to the plurality of sliding grooves and a plugging plate corresponding to the plurality of through ports. The sampling member includes a slider slidably mounted in the sliding groove, a bending seat fixedly mounted on the slider and inclined away from the center of the installation housing, and a sampling pipe mounted on the bending seat. The vertical portion of the bending seat passes through the arc-shaped guide groove, and the sampling pipe is mounted on the inclined portion of the bending seat. The sampling pipe is provided with a horizontal sampling port and an expanding scraper, and the top of the horizontal sampling port is higher than the top of the expanding scraper; scraping teeth are provided at the horizontal sampling port. Further, a drill bit is installed below the lowermost group of drill pipes, the uppermost group of drill pipes is detachably connected to the rotary driver, and the two adjacent drill pipes are threadedly connected; the length of the expanding scraper extending outward from the sampling pipe is 2-4 cm; a storage battery for supplying electric energy to the driving motor is installed in the installation housing, and the driving motor is a motor with a function of remotely controlling the start and stop wirelessly.

[0010] Preferably, two symmetrically arranged clamping driving cylinders are installed in the upper part of the isolation cylinder.

[0011] Preferably, it further includes a feeding mechanism for feeding the drill pipes. The feeding mechanism includes a rotary seat hingedly installed on the frame, a clamp fixedly installed on the rotary seat, and a rotary driving cylinder for providing power for the rotation of the rotary seat; further, one end of the rotary driving cylinder is hinged to the frame, and the other end of the rotary driving cylinder is hinged to the bottom of the rotary seat away from the hinge point with the frame; a lifting arm is installed on the frame, and the lifting arm is used for lifting the drill pipes to the clamp.

[0012] Preferably, a sludge discharge valve is installed at the bottom of the storage tank; further, the sludge discharge valve is preferably an electric control valve, and a manual valve with a driving handle extending upward to the upper part of the storage tank can also be used, and no further elaboration and limitation are made here.

[0013] Preferably, a limiting ring is installed below in the isolation cylinder, and the distance between the limiting ring and the bottom of the isolation cylinder is at least 0.3 m.

[0014] Preferably, a lifting ring is installed on the floating boat.

[0015] Compared with the prior art, the present invention provides a wetland carbon sample drilling and sampling device, which has the following beneficial effects: The wetland carbon sample drilling and sampling device is smoothly positioned in the swamp through a floating boat. The lifting drive drives the storage box and the isolation cylinder to move downward, and the mud in the swamp enters the isolation cylinder. The floating plate moves to the upper part of the isolation cylinder under the buoyancy of the mud. When the bottom of the isolation cylinder contacts the hard stratum, the mud pump is started and the mud in the isolation cylinder is pumped into the storage box. As the amount of mud in the storage box increases, the gravity of the entire device gathers towards the isolation cylinder. Under the action of the lifting drive and the increasing gravity of the device, the bottom of the isolation cylinder is gradually inserted into the hard stratum. As the mud liquid level in the isolation cylinder continuously drops, the mud pump moves to the bottom of the isolation cylinder to pump out all the mud in the isolation cylinder, and the drilling and sampling mechanism drills and feeds samples downward through the isolation cylinder and the through hole into the hard stratum. Without building a drilling platform, the device can be quickly positioned and installed in the swamp. The isolation cylinder effectively isolates the upper muddy water of the wetland, avoiding contamination of the lower carbon sample, and improving the sampling efficiency and sampling accuracy of the wetland underground carbon sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 is a top-plan structural schematic diagram of the present invention;

[0018] Figure 3 is the Figure 2 cross-sectional structural schematic diagram at A-A in the present invention;

[0019] Figure 4 is the Figure 2 cross-sectional structural schematic diagram at B-B in the present invention;

[0020] Figure 5 is another perspective three-dimensional structural schematic diagram of the present invention;

[0021] Figure 6 is an external three-dimensional structural schematic diagram of the drill pipe with an outward-expanded sampling assembly of the present invention;

[0022] Figure 7 is an internal cross-sectional plan structural schematic diagram of the drill pipe with an outward-expanded sampling assembly of the present invention;

[0023] Figure 8 is a three-dimensional structural schematic diagram of the outward-expanded sampling assembly of the present invention;

[0024] Figure 9 is the Figure 4 partial enlarged structural schematic diagram at C in the present invention;

[0025] Figure 10 is theFigure 7 Schematic diagram of the partial enlarged structure at position D in the [device];

[0026] Figure 11 It is of the present invention Figure 8 Schematic diagram of the partial enlarged structure at position E in the [device];

[0027] Reference numerals in the drawings: 1, floating ship; 2, storage tank; 3, isolation cylinder; 4, lifting drive; 5, floating board; 6, mud pump; 7, connecting pipe; 8, through hole; 9, bending arm; 10, bending drive cylinder; 11, spiral drum; 12, drive motor; 13, frame; 14, lifting seat; 15, lifting drive cylinder; 16, rotation drive; 17, drill pipe; 18, through port; 19, installation housing; 20, drive motor; 21, drive disk; 22, chute; 23, arc guide groove; 24, sealing plate; 25, slider; 26, bending seat; 27, sampling pipe; 28, horizontal sampling port; 29, flaring scraper; 30, scraping teeth; 31, clamping drive cylinder; 32, rotating seat; 33, clamp; 34, rotation drive cylinder; 35, mud discharge valve; 36, limit ring; 37, lifting ring. Detailed implementation manners

[0028] In order to enable those skilled in the art to better understand the invention solution, the technical solutions in the embodiments of the invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the invention. Obviously, the described embodiments are only a part of the embodiments of the invention, rather than all the embodiments. Based on the embodiments in the invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of the invention.

[0029] It should be noted that, without conflict, the embodiments in the invention and the features and technical solutions in the embodiments may be combined with each other.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] Embodiment 1

[0032] Please refer to Figures 1-5, A wetland carbon sample drilling and sampling device, comprising a floating boat 1, a ground-holding and water-isolating mechanism installed on the floating boat 1, and a drilling and sampling mechanism for sampling formation carbon samples. The ground-holding and water-isolating mechanism includes a storage tank 2 slidably installed up and down on the floating boat 1, an isolation cylinder 3 fixedly installed on the storage tank 2, a lifting drive 4 for providing power for the up and down sliding of the storage tank 2, and a mud and water drainage mechanism. The drilling and sampling mechanism is installed on the storage tank 2. The mud and water drainage mechanism includes a floating plate 5 slidably installed up and down in the isolation cylinder 3, a mud pump 6 fixedly installed on the floating plate 5, and a connecting pipe 7. One end of the connecting pipe 7 is communicated with the output end of the mud pump 6, and the other end of the connecting pipe 7 extends into the upper part inside the storage tank 2; a through hole 8 is provided in the middle of the floating plate 5. Further, the lifting drive 4 can adopt a hydraulic cylinder, a screw drive, or other equivalent drives capable of driving the storage tank 2 to move up and down; the central axis of the through hole 8 coincides with the central axis of the isolation cylinder 3, and the through hole 8 is used for the drill on the drilling and sampling mechanism to pass through; a ring blade is provided at the bottom of the isolation cylinder 3; the ring blade can further improve the smoothness of the isolation cylinder 3 feeding into the hard formation.

[0033] Specifically, please refer to Figures 3-4 , both the mud pump 6 and the connecting pipe 7 are in two groups. The two mud pumps 6 are respectively communicated with the inside of the storage tank 2 through the two connecting pipes 7. The two connecting pipes 7 are arranged in a staggered manner up and down and spirally wound inside the isolation cylinder 3. The connecting pipe 7 adopts a steel wire hose; further, the steel wire hose adopts a hose with PVC embedded threaded metal wires.

[0034] Specifically, please refer to Figure 1 , symmetrically arranged balance drive mechanisms are installed on both sides of the floating boat 1. The balance drive mechanism includes two bending arms 9 fixedly installed on the side wall of the floating boat 1, a bending drive cylinder 10 for providing power for the bending of the two bending arms 9, a spiral drum 11 rotatably installed between the two bending arms 9, and a drive motor 12 for providing power for the rotation of the spiral drum 11.

[0035] A mud discharge valve 35 is installed at the bottom of the storage tank 2; further, the mud discharge valve 35 is preferably an electric control valve, or a manual valve with a drive handle extending upward to the upper part of the storage tank 2 can also be adopted, and no further elaboration and limitation are made here.

[0036] Specifically, please refer to Figure 11 , a limit ring 36 is installed below inside the isolation cylinder 3, and the distance between the limit ring 36 and the bottom of the isolation cylinder 3 is at least 0.3 m.

[0037] A lifting ring 37 is installed on the floating boat 1.

[0038] In the wetland carbon sample drilling and sampling device provided in this embodiment, during the process of the mud pump 6 pumping the mud in the isolation cylinder 3 into the storage tank 2, the self-weight of the device continuously increases, improving the stability of the device in the swamp. Meanwhile, the acting force transmitted to the bottom of the isolation cylinder 3 and the hard stratum synchronously increases. Combined with the downward feeding drive of the lifting drive 4 on the isolation cylinder 3, the smoothness of the downward insertion of the isolation cylinder 3 into the hard stratum can be effectively improved, and the energy consumption of the lifting drive 4 can be effectively reduced.

[0039] Using two mud pumps 6 can improve the mud extraction efficiency in the isolation cylinder 3. While the two mutually intertwined and coiled connecting pipes 7 play a role in transporting the mud, they can provide a downward elastic thrust to the floating plate 5. That is, the coiled connecting pipes 7 in the coiled state can act as a "spring" to provide a downward acting force to the floating plate 5, so that the bottom of the mud pump 6 is always immersed in the mud in the isolation cylinder 3, ensuring the smooth extraction of the mud in the isolation cylinder 3 by the mud pump 6.

[0040] The driving motor 12 can drive the spiral drum 11 to rotate to realize the forward drive of the floating boat 1. Through the bending drive cylinder 10, the bending degree of the bending arm 9 can be adjusted, so as to adjust the depth of the spiral drum 11 immersed in the swamp, adjust the buoyancy borne by the device, and at the same time, the balance of the floating boat 1 in the vertical direction can be adaptively adjusted to further improve the stability of the device in the swamp; when the isolation cylinder 3 feeds towards the hard stratum, the output end of the bending drive cylinder 10 gradually extends, and the spiral drum 11 gradually moves out of the swamp, reducing the buoyancy borne by the device and increasing the acting force of the isolation cylinder 3 towards the hard stratum, further improving the smoothness of the isolation cylinder 3 feeding towards the hard stratum.

[0041] After the sampling operation is completed, the mud discharge valve 35 can be opened to discharge the mud in the storage tank 2, reducing the downward acting force on the isolation cylinder 3. The lifting drive 4 drives the storage tank 2 to move upward to realize the detachment of the isolation cylinder 3 from the hard stratum.

[0042] The limit ring 36 can prevent the floating plate 5 from moving downward excessively, and at the same time, it can limit the depth of the isolation cylinder 3 inserted into the hard stratum to prevent the isolation cylinder 3 from being inserted into the hard stratum excessively; the lifting ring 37 can provide a lifting point for external lifting equipment to facilitate lifting the whole device into the swamp or out of the swamp.

[0043] Embodiment 2

[0044] Further optimize the wetland carbon sample drilling and sampling device provided in Embodiment 1. Specifically, please refer to Figures 2-3 And Figures 6-10, the drill sampling mechanism includes a frame 13, a lifting seat 14 slidably mounted up and down on the frame 13, a lifting drive cylinder 15 for providing power for the up and down movement of the lifting seat 14, a rotary drive 16 fixedly mounted on the lifting seat 14, and a plurality of drill pipes 17 detachably connected end to end. At least one drill pipe 17 is provided with an installation cavity and a plurality of through openings 18 communicating with the inside of the installation cavity. An outward expanding sampling assembly is installed in the installation cavity. The outward expanding sampling assembly includes an installation housing 19, a drive motor 20 fixedly installed in the installation housing 19, a drive disk 21 fixedly installed at the output end of the drive motor 20, and a plurality of sampling members. The installation housing 19 is provided with a plurality of sliding grooves 22 arranged radially. The drive disk 21 is provided with a plurality of arc-shaped guide grooves 23 corresponding to the plurality of sliding grooves 22 and a sealing plate 24 corresponding to the plurality of through openings 18. The sampling member includes a slider 25 slidably installed in the sliding groove 22, a bending seat 26 fixedly installed on the slider 25 and inclined away from the center of the installation housing 19, and a sampling pipe 27 installed on the bending seat 26. The vertical portion on the bending seat 26 passes through the arc-shaped guide groove 23, and the sampling pipe 27 is installed on the inclined portion of the bending seat 26. The sampling pipe 27 is provided with a horizontal sampling port 28 and a flaring scraper 29. The top of the horizontal sampling port 28 is higher than the top of the flaring scraper 29; scraping teeth 30 are provided at the horizontal sampling port 28. Further, a drill bit is installed below the lowermost group of drill pipes 17, the uppermost group of drill pipes 17 is detachably connected to the rotary drive 16, and the two adjacent drill pipes 17 are threadedly connected; the length of the flaring scraper 29 extending outward from the sampling pipe 27 is 2 - 4 cm; a storage battery for supplying electric energy to the drive motor 20 is installed in the installation housing 19, and the drive motor 20 is a motor with a function of wireless remote control for starting and stopping; the length of the drill pipe 17 can be a standard size such as 0.5 m or 1 m; the sampling pipe 27 is screwed on the bending seat 26.

[0045] Specifically, please refer to Figure 3 ; two symmetrically arranged clamping drive cylinders 31 are installed in the upper part of the isolation cylinder 3.

[0046] Specifically, please refer to Figure 4 , it further includes a feeding mechanism for feeding the drill pipes 17. The feeding mechanism includes a rotary seat 32 hingedly installed on the frame 13, a clamp 33 fixedly installed on the rotary seat 32, and a rotary drive cylinder 34 for providing power for the rotation of the rotary seat 32; further, one end of the rotary drive cylinder 34 is hinged to the frame 13, and the other end of the rotary drive cylinder 34 is hinged to the bottom of the rotary seat 32 away from the hinge point with the frame 13; a lifting arm is installed on the frame 13, and the lifting arm is used for lifting the drill pipes 17 to the clamp 33.

[0047] The wetland carbon sample drilling and sampling device provided in this embodiment installs the drill pipe 17 with an outward-expanded sampling component at the position corresponding to the formation at the sampling depth. In the initial state, the sealing plate 24 closes the through port 18 to prevent the powdery materials in the drill hole from entering the installation cavity. When the drill pipe 17 reaches the sampling depth, the rotary driver 16 drives the drill pipe 17 to rotate continuously. The drive motor 20 drives the drive disk 21 to rotate. The arc-shaped guide groove 23 pushes the bending seat 26 to move. The slider 25 moves along the chute 22 away from the center of the drive disk 21. The sealing plate 24 rotates synchronously with the drive disk 21 and disengages from the sealing of the through port 18. The sampling pipe 27 extends outward from the through port 18. The flaring scraper 29 scrapes off the materials attached to the inner wall of the formed drill hole. The scraped loose materials fall through the annular gap formed between the drill pipe 17 and the inner wall of the formed drill hole (during the drilling operation, the inner diameter of the formed drill hole is slightly larger than the outer diameter of the drill pipe 17. To further reduce the influence of the materials attached to the inner wall of the drill hole on sampling, before sampling, the drill pipe 17 can also be moved up and down by the lifting driver 4 while rotating in the drill hole, so that the excess materials between the drill hole and the outer wall of the drill pipe 17 fall below the drill hole. The flaring scraper 29 is used to clean the residual materials attached to the inner wall of the drill hole). As the flaring scraper 29 continuously feeds, the flaring scraper 29 scrapes a circular cavity on the inner wall of the drill hole; to reduce the influence of this part of the materials on carbon sample sampling. As the sampling pipe 27 continuously feeds, the scraping teeth 30 gradually come into contact with the top wall of the circular cavity. The scraping teeth 30 gradually scrape off the carbon sample in a powder state on the top wall of the circular cavity. The powdered carbon sample enters the sampling pipe 27 through the horizontal sampling port 28, realizing direct sampling of the powdered carbon sample without the need to take it to the laboratory for further grinding treatment. The powdered carbon sample can be quickly detected and processed on-site during sampling; reducing the influence of the falling materials from the upper geological layer on the carbon sample sampling layer, improving the carbon sample sampling accuracy, and facilitating the on-site detection of subsequent carbon samples.

[0048] Please refer to Figure 3 ; In the initial stage of assembling two adjacent drill pipes 17, the two clamping drive cylinders 31 can clamp and limit the lower group of drill pipes 17 to prevent the bottom drill pipe 17 from falling into the isolation cylinder 3.

[0049] Please refer to Figure 2 Or Figure 3 ; The drill pipe 17 can be placed on the clamp 33 for clamping. The rotary drive cylinder 34 is started and drives the rotary seat 32 to rotate from the horizontal state to the vertical state, so that the drill pipe 17 is located below the rotary driver 16. The lifting drive cylinder 15 drives the lifting seat 14 and the rotary driver 16 to move downward, so that the top of the drill pipe 17 is connected to the rotary driver 16, and the bottom of the drill pipe 17 is connected to another adjacent drill pipe 17. Using the rotational driving force of the rotary driver 16, the threaded connection between the drill pipe 17, the rotary driver 16 and the adjacent drill pipe 17 is realized, without manual operation, improving the installation efficiency of the drill pipe 17, shortening the carbon sample sampling time, and thus improving the carbon sample sampling efficiency.

[0050] The usage process of the wetland carbon sample drilling and sampling device provided by the present invention is as follows: The device is smoothly positioned in the swamp through the floating boat 1. The lifting driver 4 drives the storage box 2 and the isolation cylinder 3 to move downward, and the mud in the swamp enters the isolation cylinder 3. The floating plate 5 moves to the upper part inside the isolation cylinder 3 under the buoyancy of the mud. When the bottom of the isolation cylinder 3 contacts the hard stratum, the mud pump 6 is started and the mud in the isolation cylinder 3 is pumped into the storage box 2. As the amount of mud in the storage box 2 increases, the gravity of the entire device gathers towards the isolation cylinder 3. Under the action of the lifting driver 4 and the continuously increasing gravity of the device, the bottom of the isolation cylinder 3 is gradually inserted into the hard stratum. As the mud liquid level in the isolation cylinder 3 continuously drops, the mud pump 6 moves to the bottom of the isolation cylinder 3 to pump out all the mud in the isolation cylinder 3, and the drilling and sampling mechanism drills and feeds for sampling downward through the isolation cylinder 3 and the through hole 8 to the hard stratum. When the formation depth required for sampling is reached, the outward expansion sampling assembly samples the carbon sample of the corresponding formation, and the sampling tube 27 on the outward expansion sampling assembly after sampling is directly detached, and the powdered carbon sample in the sampling tube 27 can be detected on site.

[0051] In the invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the invention can be understood according to specific situations.

Claims

1. A wetland carbon sample drilling and sampling device, characterized in that, It includes a floating ship (1), a ground-holding and water-isolating mechanism installed on the floating ship (1), and a drilling and sampling mechanism for sampling formation carbon samples. The ground-holding and water-isolating mechanism includes a storage tank (2) slidably installed up and down on the floating ship (1), an isolation cylinder (3) fixedly installed on the storage tank (2), a lifting drive (4) providing power for the up-and-down sliding of the storage tank (2), and a sludge and precipitation removal mechanism. The drilling and sampling mechanism is installed on the storage tank (2). The sludge and precipitation removal mechanism includes a floating plate (5) slidably installed up and down in the isolation cylinder (3), a mud pump (6) fixedly installed on the floating plate (5), and a connecting pipe (7). One end of the connecting pipe (7) is communicated with the output end of the mud pump (6), and the other end of the connecting pipe (7) extends into the upper part inside the storage tank (2); a through hole (8) is provided in the middle of the floating plate (5). Both the mud pump (6) and the connecting pipe (7) are in two groups. The two mud pumps (6) are respectively communicated with the inside of the storage tank (2) through the two connecting pipes (7). The two connecting pipes (7) are arranged in a staggered manner up and down and spirally wound in the isolation cylinder (3). The connecting pipe (7) is made of a steel wire hose. Balanced drive mechanisms are symmetrically installed on both sides of the floating ship (1). The balanced drive mechanism includes two bent arms (9) fixedly installed on the side wall of the floating ship (1), a bending drive cylinder (10) providing power for the bending of the two bent arms (9), a spiral drum (11) rotatably installed between the two bent arms (9), and a drive motor (12) providing power for the rotation of the spiral drum (11). The described drilling and sampling mechanism includes a frame (13), a lifting seat (14) slidably mounted up and down on the frame (13), a lifting drive cylinder (15) providing power for the up and down movement of the lifting seat (14), a rotary drive (16) fixedly mounted on the lifting seat (14), and a plurality of drill pipes (17) detachably connected end to end. At least one drill pipe (17) is provided with an installation cavity and a plurality of through ports (18) communicating with the inside of the installation cavity. An outward-expanding sampling assembly is installed in the installation cavity. The outward-expanding sampling assembly includes an installation housing (19), a drive motor (20) fixedly mounted in the installation housing (19), a drive disk (21) fixedly mounted on the output end of the drive motor (20), and a plurality of sampling members. The installation housing (19) is provided with a plurality of sliding grooves (22) arranged radially. The drive disk (21) is provided with a plurality of arc-shaped guide grooves (23) corresponding to the plurality of sliding grooves (22) and a sealing plate (24) corresponding to the plurality of through ports (18). The sampling member includes a slider (25) slidably mounted in the sliding groove (22), a bending seat (26) fixedly mounted on the slider (25) and inclined away from the center of the installation housing (19), and a sampling pipe (27) mounted on the bending seat (26). The vertical portion on the bending seat (26) passes through the arc-shaped guide groove (23). The sampling pipe (27) is mounted on the inclined portion of the bending seat (26). The sampling pipe (27) is provided with a horizontal sampling port (28) and a flaring scraper (29). The top of the horizontal sampling port (28) is higher than the top of the flaring scraper (29); a scraping tooth (30) is provided at the horizontal sampling port (28).

2. The wetland carbon sample drilling and sampling device according to claim 1, characterized in that, Two symmetrically arranged clamping drive cylinders (31) are installed in the upper part of the isolation cylinder (3).

3. The wetland carbon sample drilling and sampling device according to claim 2, wherein It further includes a feeding mechanism for feeding the drill pipe (17). The feeding mechanism includes a rotary seat (32) hingedly mounted on the frame (13), a clamp (33) fixedly mounted on the rotary seat (32), and a rotary drive cylinder (34) providing power for the rotation of the rotary seat (32).

4. The wetland carbon sample drilling and sampling device according to claim 1, wherein, A sludge discharge valve (35) is installed at the bottom of the storage tank (2).

5. The wetland carbon sample drilling and sampling device according to claim 1, wherein A limiting ring (36) is installed in the lower part of the isolation cylinder (3). The distance between the limiting ring (36) and the bottom of the isolation cylinder (3) is at least 0.3 m.

6. The wetland carbon sample drilling and sampling device according to claim 1, characterized in that, A lifting ring (37) is installed on the floating boat (1).

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