Shallow fluid collecting device for carbon dioxide geological sequestration environment monitoring

Abstract

The invention provides a carbon dioxide geological storage environment monitoring shallow fluid collection device, and relates to the technical field of shallow fluid collection. Drilling a cylinder; a detection box; a driving mechanism; an unlocking unit; and an anti-clogging mechanism. The drilling device has the beneficial effects that the drill cylinder is driven by the motor to descend and rotate, after the drill cylinder descends till a contact block of a locking mechanism makes contact with a first annular ring, the contact block is extruded by the first annular ring, so that a moving rod moves outwards to drive a push-pull rod to pull a clamping block to be separated from a clamping groove, and a brake pad abuts against the inner wall of a second annular ring; the drilling barrel is separated from the locking arm, then the drilling barrel rotates at a certain angle in the first notch, the second notch extrudes the sealing block, the sealing block moves backwards towards the containing cavity to open the second notch, accordingly, the shallow fluid can enter the drilling barrel, and the detection box sucks the shallow fluid entering the drilling barrel for detection. And the situation that the second notch is blocked by soil can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of shallow fluid collection, and in particular to a shallow fluid collection device for monitoring the carbon dioxide geological storage environment. Background Art

[0002] Geologically sealed carbon dioxide may migrate vertically through wellbores, faults, cracks, caprocks and other pathways. When it migrates across the boundary of the storage body, it is called leakage. After leakage, the carbon dioxide will enter the atmosphere through the surface. The surface is the habitat and main activity place for humans and animals. It is also the gathering place of ecological elements such as vegetation and surface water. The normal content of carbon dioxide in soil gas is generally maintained between 0.2% and 4%. When the content increases to 5%, it will have an adverse effect on plant growth. High flux of carbon dioxide will cause an increase in the concentration of carbon dioxide in soil gas, inhibit plant root respiration, and even cause plant death. The increase in the concentration of carbon dioxide in the soil will also cause changes in the physical and chemical properties of the soil, the types and numbers of soil microorganisms, and the pH value, mineralization and ion concentration of shallow surface water, thereby affecting industrial and agricultural activities.

[0003] The existing shallow fluid collection devices for monitoring the environment of carbon dioxide geological storage are mainly designed to facilitate fluid collection. However, when collecting fluid, the collection device is often lowered into the soil together with the drill bit, which often leads to blockage of the inner cavity of the collection device, making it inconvenient to collect fluid later. Summary of the invention

[0004] In view of this, in order to solve the above-mentioned problems existing in the existing shallow fluid collection for monitoring the environment of geological storage of carbon dioxide, an embodiment of the present invention provides a shallow fluid collection device for monitoring the environment of geological storage of carbon dioxide.

[0005] An embodiment of the present invention provides a shallow fluid collection device for monitoring a carbon dioxide geological storage environment, comprising:

[0006] A shell, the bottom of which is provided with a plurality of supporting legs, and the bottom surface of the shell is provided with an inlet and an outlet;

[0007] a drill barrel disposed in the housing;

[0008] A detection box, which is arranged in the drill tube;

[0009] A driving mechanism connected to the drill tube to drive the drill tube to rise and fall and rotate so that the drill tube passes through the inlet and outlet;

[0010] The unlocking unit comprises a movable column and a plurality of locking mechanisms, wherein the movable column is arranged in the drill tube and can rotate around a vertical axis, and each of the locking mechanisms is arranged at intervals around the movable column, and each of the locking mechanisms comprises a locking arm, a movable rod, a push-pull rod, a contact block and a clamping block, and a side wall of the drill tube is provided with a plurality of first notches, the locking arm is hollow, one end is fixedly connected to the movable column, and the other end extends out of the first notch, and the first notch is provided with a clamping groove, the movable rod can slidably penetrate the end face of the locking arm away from the movable column, the end of the movable rod away from the movable column is provided with a brake pad, the contact block is fixed to the bottom surface of the end of the movable rod away from the movable column, and the contact block penetrates the bottom surface of the locking arm The bottom of the contact block is provided with an inclined surface, and a positioning rod is provided in the locking arm. The card block can be slidably sleeved on the positioning rod, penetrate the surface of the locking arm and embed into the card slot. The push-pull rod is inclined, one end of which can be rotatably connected to the moving rod close to one end of the movable column, and the other end can be rotatably connected to the card block. The bottom surface of the shell is provided with a first annular ring and a second annular ring arranged around the drill tube. When the drill tube descends, the contact block of each locking mechanism can be squeezed by the first annular ring, so that the moving rod moves outward to drive the push-pull rod to separate the card block from the card slot, and the brake pad is pressed against the inner wall of the second annular ring, so that the drill tube can rotate relative to the locking arm by a predetermined angle;

[0011] And an anti-blocking mechanism, which includes multiple sealing members, the drill barrel side wall is circumferentially provided with multiple second slots spaced apart, the second slots are trapezoidal slots whose width gradually increases from the outside to the inside, each of the sealing members is arranged on the inner side of each of the second slots, the sealing members include a sealing plate, a sealing block and a first elastic member, the sealing plate is fixedly connected to the movable column, a placement cavity is provided on the sealing plate, the sealing block is a rectangular block, the front part of the sealing block is engaged with the outer part of the second slot, the rear part of the sealing block extends into the placement cavity and is connected to the sealing plate through the first elastic member, and the two sides of the rear part of the sealing block are separated from the inner part of the second slot.

[0012] Furthermore, the locking arm is a rectangular slot body, a third notch is provided on the bottom surface of the outer end of the locking arm, and the inclined surface of the contact block extends out of the third notch.

[0013] Furthermore, each of the locking mechanisms includes a second elastic member, which is arranged in the moving direction of the moving rod, and one end of the second elastic member is connected to the contact block, and the other end is connected to the locking arm.

[0014] Furthermore, the number of the card blocks in each locking mechanism is set to two, and the upper surface and lower surface of the first slot are provided with two card slots which are symmetrical up and down, the two card blocks are respectively embedded in the two card slots, and the two card blocks can be vertically slidably mounted on the positioning rod.

[0015] Furthermore, the width of the first notch is greater than the width of the locking arm, so that the locking arm can rotate within the first notch at an angle of 20° to 30°.

[0016] Furthermore, the outer wall of the movable column is provided with a plurality of connecting rods arranged along its radial direction, the ends of the connecting rods are provided with first balls, the inner wall of the drill tube is provided with a first annular groove, and the first ball of each connecting rod is arranged in the first annular groove.

[0017] Furthermore, the seal also includes a slider, and slide grooves are provided on the opposite sides of the placement cavity. Both ends of the slider are embedded in the two slide grooves so that the slider can slide radially along the drill tube. One side of the slider is connected to the sealing block, and the other side is connected to the sealing plate through the first elastic member.

[0018] Furthermore, the driving mechanism includes a motor, a threaded rod, a threaded sleeve, a plurality of guide rods and a plurality of lifting rods. The threaded rod is vertically arranged, the upper end is connected to the motor, and the lower end is connected to the drill barrel. The threaded sleeve is threadedly connected to the threaded rod. Each guide rod is arranged around the threaded rod. The lower end of each guide rod is fixedly connected to the outer shell. The outer wall of the threaded sleeve is provided with a plurality of fixing plates arranged along the radial direction. Each fixing plate can be slidably mounted on one of the guide rods. Each lifting rod is fixedly connected to the fixing plate and has a second ball at the lower end. The outer wall of the drill barrel is provided with a second annular groove. The second ball at the lower end of each lifting rod is embedded in the second annular groove. The lower end of the threaded rod is connected to the upper end of the drill barrel.

[0019] Furthermore, the lower end of the threaded rod is connected to the installation tube, the lower end of the installation tube is connected to the detection box, the detection box is provided with a water pumping pipe, and the water pumping pipe passes through the movable column and extends between the sealing plates.

[0020] Furthermore, the shell includes a base and an upper shell arranged on the base, and the upper shell is provided with an openable sliding door.

[0021] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention are:

[0022] The present invention discloses a shallow fluid collection device for monitoring the environment of carbon dioxide geological storage. When collecting shallow fluid, a motor is used to drive a drill barrel to descend and rotate. After the drill barrel descends until a contact block of a locking mechanism contacts a first annular ring, the contact block is squeezed by the first annular ring to make a moving rod move outward, driving a push-pull rod to pull the clamping block and separate it from the clamping groove, and to make a brake pad press against an inner wall of a second annular ring, and the drill barrel is separated from the locking arm. After that, the drill barrel rotates a certain angle at the first notch, and the second notch squeezes a sealing block, so that the sealing block moves backward toward a placement cavity to open the second notch, thereby allowing shallow fluid to enter the drill barrel. A detection box sucks the shallow fluid entering the drill barrel for detection. The sealing block blocks and seals the second notch when shallow fluid collection is not performed, and opens the second notch when shallow fluid collection is performed, thereby preventing the second notch from being blocked by soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a shallow fluid collection device for monitoring a carbon dioxide geological storage environment according to the present invention;

[0024] Figure 2 It is a cross-sectional view of a shallow fluid collection device for monitoring a carbon dioxide geological storage environment according to the present invention;

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of the upper shell of a shallow fluid collection device for monitoring the geological storage environment of carbon dioxide according to the present invention;

[0026] Figure 4 It is a schematic diagram of the internal structure of the upper shell of a shallow fluid collection device for monitoring the carbon dioxide geological storage environment of the present invention;

[0027] Figure 5 is a schematic diagram of the drive mechanism;

[0028] Figure 6 yes Figure 5 A partial enlarged view of the middle A;

[0029] Figure 7 is a schematic diagram of a drill barrel;

[0030] Figure 8 It is a schematic diagram of the cross-sectional structure of the upper part of the drill tube;

[0031] Fig. 9 is a schematic diagram of the locking mechanism;

[0032] Fig.10 It is an exploded view of the locking mechanism;

[0033] Fig.11 It is a schematic diagram of the cross-sectional structure of the lower part of the drill tube;

[0034] Fig.12It is a schematic diagram of the anti-blocking mechanism.

[0035] In the figure: 1, base; 2, upper shell; 3, support leg; 4, sliding door; 5, locking mechanism; 6, drill tube; 7, motor; 8, threaded rod; 9, threaded sleeve; 10, fixing plate; 11, guide rod; 12, detection box; 13, lifting rod; 14, mounting tube; 15, first annular ring; 16, second annular ring; 17, first notch; 18, locking arm; 19, moving rod; 20, brake pad; 21, contact block; 22, clamping block; 23, second annular ring shaped groove; 24, the third notch; 25, the push-pull rod; 26, the positioning block; 27, the positioning rod; 28, the positioning plate; 29, the second elastic member; 30, the slot; 31, the second ball; 32, the sealing block; 33, the sealing plate; 34, the second notch; 35, the placement cavity; 36, the first elastic member; 37, the slider; 38, the slide groove; 39, the movable column; 40, the connecting rod; 41, the first ball; 42, the first annular groove; 43, the water pump; 44, the fixing rod. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the embodiments of the present invention in conjunction with the accompanying drawings. The following is a preferred embodiment of the present invention, which is intended to provide a basic understanding of the present invention, but is not intended to confirm the key or decisive elements of the present invention or to limit the scope of protection.

[0037] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0038] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0039] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0040] In the description of the present invention, it should be noted that the circuits, electronic components and modules involved in the present invention are all prior art and can be fully implemented by those skilled in the art without further elaboration.

[0041] It should be further explained that, unless otherwise clearly specified and limited, the terms "installation" and "connection" 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 an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Please refer to Figure 1 and 2 An embodiment of the present invention provides a shallow fluid collection device for monitoring a carbon dioxide geological storage environment, comprising a housing, a drill pipe 6, a detection box 12, a driving mechanism, an unlocking unit and an anti-blocking mechanism arranged in the housing.

[0043] A plurality of supporting legs 3 are provided at the bottom of the shell, and an inlet and outlet are provided at the bottom surface of the shell. Specifically, the shell includes a base 1 and an upper shell 2 arranged on the base 1. The base 1 is approximately a rectangular plate, and supporting legs 3 are provided at the four corners of the bottom surface of the base 1. The upper shell 2 is cylindrical, and the lower end of the upper shell 2 is fixedly connected to the base 1. The inlet and outlet are arranged on the base 1, and the inlet and outlet are circular and arranged coaxially with the outer shell. The upper shell 2 is provided with an openable sliding door 4, so that the sliding door 4 can be opened to operate the detection box 12.

[0044] Please refer to Figure 3 and 4 The drill tube 6 is located in the upper housing 2, specifically directly above the inlet and outlet, and is coaxially arranged with the inlet and outlet. The diameter of the inlet and outlet is approximately the same as the outer diameter of the drill tube 6, so that the drill tube 6 can pass through the inlet and outlet.

[0045] Recombination Figure 5 and 6As shown, the driving mechanism is connected to the drill tube 6 to drive the drill tube 6 to rise and fall and rotate, so that the drill tube 6 passes through the inlet and outlet. The driving mechanism mainly includes a motor 7, a threaded rod 8, a threaded sleeve 9, a plurality of guide rods 11 and a plurality of lifting rods 13. The threaded rod 8 is vertically arranged and coaxially arranged with the drill tube 6. The upper end of the threaded rod 8 is connected to the output end of the motor 7, and the lower end is connected to the drill tube 6. The threaded sleeve 9 is sleeved on the threaded rod 8 and threadedly connected to the threaded rod 8. Each of the guide rods 11 is arranged around the threaded rod 8, and the lower end of each of the guide rods 11 is fixedly connected to the base 1 of the housing. The outer wall of the threaded sleeve 9 is provided with a plurality of fixing plates 10 arranged along the radial direction, and each of the fixing plates 10 is slidably sleeved on one of the guide rods 11. Each of the lifting rods 13 is fixedly connected to the fixing plate 10, and a second ball 31 is provided at the lower end. The outer wall of the drill tube 6 is provided with a second annular groove 23, the second ball 31 at the lower end of each lifting rod 13 is embedded in the second annular groove 23, and the lower end of the threaded rod 8 is connected to the upper end of the drill tube 6. Here, the lifting rod 13 is L-shaped, and each lifting rod 13 is arranged around the outer wall of the drill tube 6. The upper end of the lifting rod 13 is fixedly connected to the fixing plate 10, and the lower end is provided with the second ball 31, and the second ball 31 is embedded in the second annular groove 23.

[0046] It should be noted that the number of the guide rods 11 can be flexibly set to multiple according to the actual application scenario, and generally the guide rods 11 are evenly spaced around the periphery of the drill tube 6. At the same time, the number of the lifting rods 13 can also be flexibly set to multiple according to the actual application scenario, and generally the lifting rods 13 are evenly spaced around the periphery of the drill tube 6.

[0047] The motor 7 drives the threaded rod 8 to rotate and drives the threaded sleeve 9 to rotate. The threaded sleeve 9 descends along the threaded rod 8 and drives each of the fixed plates 10 to descend along each of the guide rods 11. The fixed plate 10 drives the lifting rod 13 to descend and pushes the drill barrel 6 to descend through the second ball 31. The threaded rod 8 drives the drill barrel 6 to rotate around each of the second balls 31 through the second annular groove 23.

[0048] In some embodiments, the lower end of the threaded rod 8 is connected to the mounting tube 14, the lower end of the mounting tube 14 is connected to the detection box 12, the bottom of the detection box 12 is connected to the drill barrel 6, and the detection box 12 is provided with a pumping pipe 43, and the pumping pipe 43 is used to suck the shallow fluid entering the drill barrel 6 for detection.

[0049] Please refer to Figure 7 to Figure 11The unlocking unit includes a movable column 39 and a plurality of locking mechanisms 5. The movable column 39 is disposed in the drill tube 6 and can rotate around a vertical axis. The locking mechanisms 5 are spaced around the movable column 39.

[0050] Specifically, the outer wall of the movable column 39 is provided with a plurality of connecting rods 40 arranged along the radial direction thereof, each of the connecting rods 40 is evenly distributed on the same circumference, a first ball 41 is provided at the end of the connecting rod 40, and a first annular groove 42 is provided on the inner wall of the drill tube 6, and the first ball 41 of each connecting rod 40 is arranged in the first annular groove 42. In this way, the movable column 39 can rotate around each of the first balls 41 through the first annular groove 42.

[0051] Each of the locking mechanisms 5 includes a locking arm 18, a moving rod 19, a push-pull rod 25, a contact block 21 and a clamping block 22. The side wall of the drill tube 6 is provided with a plurality of first notches 17, the first notches 17 are rectangular notches, and the first notches 17 are evenly distributed on the same circumference. The locking arm 18 is hollow, one end is fixedly connected to the movable column 39, and the other end extends out of the first notch 17. The first notch 17 is provided with a clamping groove 30, and the clamping groove 30 is arranged along the vertical direction. Here, the locking arm 18 is a rectangular slot body, and the locking arm 18 is arranged in the radial direction of the movable column 39.

[0052] The moving rod 19 is arranged along the radial direction of the movable column 39, and the moving rod 19 can slide through the end surface of the locking arm 18 away from the movable column 39, and the end of the moving rod 19 away from the movable column 39 is provided with a brake pad 20. The contact block 21 is fixed to the bottom surface of the end of the moving rod 19 away from the movable column 39, and the contact block 21 penetrates the bottom surface of the locking arm 18 and an inclined surface is provided at the bottom of the contact block 21. Here, the bottom surface of the outer end of the locking arm 18 is provided with a third notch 24, and the inclined surface of the contact block 21 extends out of the third notch 24.

[0053] A positioning rod 27 is provided in the locking arm 18, and the positioning rod 27 is arranged vertically. A positioning block 26 is provided in the locking arm 18, which is fixedly connected by a positioning plate 28, and the positioning block 26 is arranged horizontally. The positioning rod 27 passes through the positioning block 26 and is fixedly connected to the fixed block. The block 22 is slidably sleeved on the positioning rod 27, passes through the surface of the locking arm 18 and is embedded in the slot 30. The push-pull rod 25 is arranged obliquely, one end of which is rotatably connected to the end of the moving rod 19 close to the movable column 39, and the other end of which is rotatably connected to the block 22. The shapes of the slot 30 and the block 22 are adapted so that the block 22 is embedded in the slot 30 and can slide relatively. As described in this embodiment, the slot 30 is a rectangular slot, and the block 22 is a rectangular block.

[0054] The bottom surface of the outer shell is provided with a first annular ring 15 and a second annular ring 16 which are arranged around the drill barrel 6. The first annular ring 15 and the second annular ring 16 are specifically fixed to the upper surface of the base 1, and the second annular ring 16 is arranged on the periphery of the first annular ring 15. The first annular ring 15 and the second annular ring 16 are both coaxially arranged with the drill barrel 6.

[0055] The lowering of the drill tube 6 can cause the contact block 21 of each locking mechanism 5 to be squeezed by the first annular ring 15, so that the moving rod 19 moves outward to drive the push-pull rod 25 to separate the clamping block 22 from the clamping groove 30, and the brake pad 20 is pressed against the inner wall of the second annular ring 16, that is, the locking mechanism 5 is separated from the drill tube 6, so that the drill tube 6 can rotate relative to the locking arm 18 by a predetermined angle. In this embodiment, the width of the first notch 17 is greater than the width of the locking arm 18, so that the locking arm 18 can rotate within the first notch 17 at an angle of 20° to 30°.

[0056] In some embodiments, the number of the blocks 22 in each locking mechanism 5 is set to two, and the upper and lower surfaces of the first notch 17 are provided with two symmetrical slots 30, which are symmetrically arranged. The two blocks 22 are respectively embedded in the two slots 30, and both blocks 22 can be vertically slidably sleeved on the positioning rod 27. The number of the push-pull rods 25 in each corresponding locking mechanism 5 is also set to two, and the two push-pull rods 25 are symmetrically arranged relative to the moving rod 19, and one end of each push-pull rod 25 can be rotatably connected to the moving rod 19, and the other end can be rotatably connected to a block 22. In this way, when the moving rod 19 moves outward, the two push-pull rods 25 are driven to pull the two blocks 22 to slide downward along the positioning rod 27 until they leave the two slots 30.

[0057] Considering that the locking mechanism 5 needs to be reset after being separated from the drill tube 6 so as to be used for collecting shallow fluid next time, each of the locking mechanisms 5 includes a second elastic member 29, which is arranged in the moving direction of the moving rod 19, and one end of the second elastic member 29 is connected to the contact block 21, and the other end is connected to the locking arm 18. The second elastic member 29 can be a spring, and the outer end of the spring is connected to the locking arm 18, and the inner end is connected to the side of the contact block 21. After the drill tube 6 can rotate to a predetermined angle relative to the locking arm 18, the restoring force of the second elastic member 29 pushes the contact block 21 to reset the moving rod 19, and the clamping block 22 is clamped into the clamping groove 30 to lock the locking mechanism 5 with the drill tube 6.

[0058] Please refer to Fig.11 and 12 The anti-blocking mechanism includes a plurality of seals. The side wall of the drill tube 6 is circumferentially provided with a plurality of second slots 34 spaced apart from each other. The second slots 34 are trapezoidal slots whose width gradually increases from the outside to the inside, and are isosceles trapezoidal slots in this case.

[0059] Each of the sealing members is arranged on the inner side of each of the second notches 34. The sealing member comprises a sealing plate 33, a sealing block 32 and a first elastic member 36. The sealing plate 33 is fixedly connected to the movable column 39. Here, the sealing plate 33 is fixedly connected to the movable column 39 via an L-shaped fixing rod 44. A placement cavity 35 is arranged on the sealing plate 33. The sealing block 32 is a rectangular block. The front of the sealing block 32 is engaged with the outer part of the second notch 34. The rear of the sealing block 32 extends into the placement cavity 35 and is connected to the sealing plate 33 via the first elastic member 36. Both sides of the rear of the sealing block 32 are separated from the inner part of the second notch 34. The water extraction pipe 43 passes through the movable column 39 and extends between each of the sealing plates 33. The drill barrel 6 rotates the second slot 34 to squeeze the sealing block 32 so that the sealing block 32 moves back to open the second slot 34, thereby allowing the external shallow fluid to enter the drill barrel 6 through the second slot 34. The detection box 12 can suck the shallow fluid in the drill barrel 6 through the suction pipe 43 for detection.

[0060] In some embodiments, the seal also includes a slider 37, and slide grooves 38 are provided on the opposite sides of the placement cavity 35. Both ends of the slider 37 are embedded in the two slide grooves 38 so that the slider 37 can slide radially along the drill tube 6. One side of the slider is connected to the sealing block 32, and the other side is connected to the sealing plate 33 through the first elastic member 36.

[0061] It can be understood that the side wall of the drill tube 6 is provided with multiple circles of the second notches 34, and a sealing member is arranged in each of the second notches 34. For example, in this embodiment, the side wall of the drill tube 6 is provided with three circles of the second notches 34, each circle includes four, and the four second notches 34 in each circle are evenly distributed on the same circumference. In this way, more second notches 34 can be arranged to allow more shallow fluid to enter the drill tube 6.

[0062] The shallow fluid collection process of the shallow fluid collection device for monitoring the carbon dioxide geological storage environment of the present invention is as follows:

[0063] First, the housing is installed at the position to be detected, that is, the four supporting legs 3 at the bottom of the base 1 are supported at the position to be detected, and the motor 7 is controlled to rotate, and the motor 7 drives the threaded rod 8 to rotate and drive the drill tube 6 to rotate, and at the same time, the threaded sleeve is driven by the threaded rod 8 to move vertically downward and drive each of the fixed plates 10 to move downward, and the fixed plate 10 drives the lifting rod 13 to move downward, and the lifting rod 13 pushes the second annular groove 23 through the second ball 31 at its lower end to make the drill tube 6 move downward, and the drill tube 6 rotates and moves downward to pass through the inlet and outlet on the base 1;

[0064] Then, when the drill tube 6 drills into the soil to a proper depth, the contact block 21 of the locking mechanism 5 contacts the first annular ring 15, and then as the drill tube 6 continues to descend, the first annular ring 15 squeezes the contact block 21, so that the contact block 21 moves outward and drives the moving rod 19 to move outward, and the moving rod 19 drives the push-pull rod 25 to pull the clamping block 22 away from the clamping groove 30 and separate from the clamping groove 30; the drill tube 6 continues to descend until the brake pad 20 at the end of the moving rod 19 is pressed against the inner wall of the second annular ring 16, and the locking arm 18 is fixed, so that the drill tube 6 is separated from the locking arm 18, that is, the drill tube 6 is separated from the locking mechanism 5, and can rotate relatively independently;

[0065] Finally, when the drill barrel 6 is separated from the locking arm 18, the motor 7 drives the drill barrel 6 to rotate a certain angle, that is, the first slot 17 rotates a certain angle relative to the locking arm 18, and the rotatable angle is determined by the difference between the width of the first slot 17 and the width of the locking arm 18; at this time, the locking arm 18 is fixed, and the movable column 39 and the sealing plate 33 fixedly connected to the locking arm 18 cannot be fixed, and the rotation of the drill barrel 6 will drive the second slot 34 to rotate, and an inclined side surface of the second slot 34 will squeeze the sealing block 32 inside it, so that the sealing block 32 retreats to open the second slot 34, so that shallow fluid can enter the drill barrel 6, and the detection box 12 sucks the shallow fluid into the drill barrel 6 for detection.

[0066] In a shallow fluid collection device for monitoring the geological storage environment of carbon dioxide of the present invention, the sealing block 32 of the anti-clogging mechanism blocks the second slot 34 on the side wall of the drill tube 6 for shallow fluid to enter before the drill tube 6 is inserted into the soil detection depth, and opens the second slot 34 after the drill tube 6 is inserted into the soil detection depth, thereby preventing the second slot 34 from being blocked by soil during shallow fluid collection.

[0067] In this article, the directional words such as front, back, top, and bottom involved are defined by the positions of the parts in the drawings and the positions of the parts relative to each other, just for the sake of clarity and convenience in expressing the technical solution. It should be understood that they are relative concepts and can change accordingly according to different ways of use and placement, and the use of the directional words should not limit the scope of protection claimed in this application.

[0068] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A shallow fluid collection device for monitoring the carbon dioxide geological storage environment, characterized in that: include: A shell, the bottom of which is provided with a plurality of supporting legs, and the bottom surface of the shell is provided with an inlet and an outlet; a drill barrel disposed in the housing; A detection box, which is arranged in the drill tube; A driving mechanism connected to the drill tube to drive the drill tube to rise and fall and rotate so that the drill tube passes through the inlet and outlet; The unlocking unit comprises a movable column and a plurality of locking mechanisms, wherein the movable column is arranged in the drill tube and can rotate around a vertical axis, and each of the locking mechanisms is arranged at intervals around the movable column, and each of the locking mechanisms comprises a locking arm, a movable rod, a push-pull rod, a contact block and a clamping block, and a side wall of the drill tube is provided with a plurality of first notches, the locking arm is hollow, one end is fixedly connected to the movable column, and the other end extends out of the first notch, and the first notch is provided with a clamping groove, the movable rod can slidably penetrate the end face of the locking arm away from the movable column, the end of the movable rod away from the movable column is provided with a brake pad, the contact block is fixed to the bottom surface of the end of the movable rod away from the movable column, and the contact block penetrates the bottom surface of the locking arm The bottom of the contact block is provided with an inclined surface, and a positioning rod is provided in the locking arm. The card block can be slidably sleeved on the positioning rod, penetrate the surface of the locking arm and embed into the card slot. The push-pull rod is inclined, one end of which can be rotatably connected to the moving rod close to one end of the movable column, and the other end can be rotatably connected to the card block. The bottom surface of the shell is provided with a first annular ring and a second annular ring arranged around the drill tube. When the drill tube descends, the contact block of each locking mechanism can be squeezed by the first annular ring, so that the moving rod moves outward to drive the push-pull rod to separate the card block from the card slot, and the brake pad is pressed against the inner wall of the second annular ring, so that the drill tube can rotate relative to the locking arm by a predetermined angle; And an anti-blocking mechanism, which includes multiple sealing members, the drill barrel side wall is circumferentially provided with multiple second slots spaced apart, the second slots are trapezoidal slots whose width gradually increases from the outside to the inside, each of the sealing members is arranged on the inner side of each of the second slots, the sealing members include a sealing plate, a sealing block and a first elastic member, the sealing plate is fixedly connected to the movable column, a placement cavity is provided on the sealing plate, the sealing block is a rectangular block, the front part of the sealing block is engaged with the outer part of the second slot, the rear part of the sealing block extends into the placement cavity and is connected to the sealing plate through the first elastic member, and the two sides of the rear part of the sealing block are separated from the inner part of the second slot.

2. A shallow fluid collection device for monitoring the carbon dioxide geological storage environment as claimed in claim 1, characterized in that: The locking arm is a rectangular slot body, a third notch is arranged on the bottom surface of the outer end of the locking arm, and the inclined surface of the contact block extends out of the third notch.

3. A shallow fluid collection device for monitoring the carbon dioxide geological storage environment according to claim 1, characterized in that: Each of the locking mechanisms comprises a second elastic member, which is arranged in the moving direction of the moving rod, and one end of the second elastic member is connected to the contact block, and the other end is connected to the locking arm.

4. A shallow fluid collection device for monitoring the carbon dioxide geological storage environment according to claim 1, characterized in that: The number of the card blocks in each locking mechanism is set to two, and the upper surface and lower surface of the first notch are provided with two card slots symmetrically arranged in an upper and lower direction. The two card blocks are respectively embedded in the two card slots, and the two card blocks can be vertically slidably sleeved on the positioning rod.

5. A shallow fluid collection device for monitoring the carbon dioxide geological storage environment according to claim 1, characterized in that: The width of the first notch is greater than the width of the locking arm, so that the locking arm can rotate within the first notch at an angle of 20° to 30°.

6. A shallow fluid collection device for monitoring the carbon dioxide geological storage environment according to claim 1, characterized in that: The outer wall of the movable column is provided with a plurality of connecting rods arranged along its radial direction, the ends of the connecting rods are provided with first balls, the inner wall of the drill tube is provided with a first annular groove, and the first balls of each connecting rod are arranged in the first annular groove.

7. A shallow fluid collection device for monitoring the carbon dioxide geological storage environment according to claim 1, characterized in that: The sealing member also includes a slider, and slide grooves are provided on opposite sides of the placement cavity. Both ends of the slider are embedded in the two slide grooves so that the slider can slide radially along the drill tube. One side of the slider is connected to the sealing block, and the other side is connected to the sealing plate through the first elastic member.

8. A shallow fluid collection device for monitoring the carbon dioxide geological storage environment as claimed in claim 1, characterized in that: The driving mechanism includes a motor, a threaded rod, a threaded sleeve, a plurality of guide rods and a plurality of lifting rods. The threaded rod is vertically arranged, the upper end is connected to the motor, and the lower end is connected to the drill barrel. The threaded sleeve is threadedly connected to the threaded rod. Each guide rod is arranged around the threaded rod. The lower end of each guide rod is fixedly connected to the shell. The outer wall of the threaded sleeve is provided with a plurality of fixing plates arranged along the radial direction. Each fixing plate can be slidably mounted on one of the guide rods. Each lifting rod is fixedly connected to the fixing plate and has a second ball at the lower end. The outer wall of the drill barrel is provided with a second annular groove. The second ball at the lower end of each lifting rod is embedded in the second annular groove. The lower end of the threaded rod is connected to the upper end of the drill barrel.

9. A shallow fluid collection device for monitoring the carbon dioxide geological storage environment as claimed in claim 8, characterized in that: The lower end of the threaded rod is connected to the installation tube, and the lower end of the installation tube is connected to the detection box. The detection box is provided with a water pumping pipe, and the water pumping pipe passes through the movable column and extends between the sealing plates.

10. A shallow fluid collection device for monitoring the carbon dioxide geological storage environment according to claim 1, characterized in that: The housing comprises a base and an upper shell arranged on the base, and the upper shell is provided with an openable sliding door.

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