Sample storage device and system for coal bed gas exploration

Abstract

The invention relates to the technical field of coal bed gas storage, in particular to a sample storage device and system for coal bed gas exploration, and the sample storage device comprises a shell, a universal gas inlet pipe, a separation frame, a plurality of storage boxes and a storage assembly; the storage assembly comprises a butt joint unit, a plurality of storage pipes and a plurality of negative pressure machines and is communicated with a coal bed gas exploitation device through a universal gas inlet pipe, then coal bed gas samples enter the storage box to be stored under the action of the universal gas inlet pipe, the butt joint unit and the storage pipes, and after the coal bed gas samples at the depth are stored, negative pressure is generated through the negative pressure machines firstly, and then the coal bed gas samples are stored in the storage box. According to the utility model, residual coal bed gas in the butt joint unit and the storage pipe is sucked away, then the butt joint unit and the storage pipe are separated, and butt joint of other storage boxes is carried out, so that before butt joint is cancelled, redundant coal bed gas samples are sucked into the storage boxes by utilizing a negative pressure principle, coal bed gas leakage is not generated during subsequent separation, and pollution to the surrounding environment is avoided; waste is avoided, and the safety of workers is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of coalbed methane storage, and in particular to a sample storage device and a system thereof for coalbed methane exploration. Background Art

[0002] Coalbed methane is an unconventional natural gas found in coal seams and their surrounding rocks and is widely used. In the energy field, it can replace coal for power generation, heating and industrial fuel. In the chemical field, methane can be extracted to produce hydrogen, synthesize ammonia or produce methanol. At the same time, as a clean energy source, it can effectively reduce coal mine gas explosion accidents. Before mining coalbed methane, it is necessary to use geological, geophysical, drilling and other means to find out the resource distribution, reserve scale and development potential of coalbed methane to provide a scientific basis for mining. However, in order to ensure the accuracy of mining before mining, it is necessary to extract samples of coalbed methane at various depths in advance, so as to analyze the distribution of coalbed methane, determine the most suitable coal seam mining depth, and ensure mining accuracy and efficiency.

[0003] In the aforementioned existing technologies, coalbed methane at different depths must be stored separately after being mined in order to avoid mutual influence. The traditional method relies on a common pipeline to connect multiple storage boxes. After each transportation, the common pipeline is unplugged and connected to another storage box, thereby transporting sample coalbed methane at different depths in turn to achieve a separate storage effect. When the common pipeline is switched and plugged in between multiple storage boxes, the coalbed methane remaining in the pipeline is easy to leak to the outside, which not only causes waste of coalbed methane and pollutes the surrounding air environment, but also affects the safety of workers after being inhaled by workers for a long time. Summary of the Invention

[0004] The purpose of the present invention is to provide a sample storage device and system for coalbed methane exploration, so as to solve the problem in the prior art that when a general pipeline is switched and plugged in between multiple storage boxes, the coalbed methane remaining in the pipeline is easily leaked to the outside, which not only causes coalbed methane waste and pollutes the surrounding air environment, but also affects the safety of workers after being inhaled for a long time.

[0005] To achieve the above objectives, the present invention provides a sample storage device for coalbed methane exploration, comprising a housing, a universal air inlet pipe, a partition frame, a plurality of storage boxes, and a storage assembly, wherein the partition frame has a plurality of grooves, the universal air inlet pipe is connected to the upper portion of the housing, the partition frame is disposed inside the housing, and the plurality of storage boxes are sequentially disposed on the partition frame;

[0006] The storage assembly includes a docking unit, multiple storage tubes and multiple negative pressure machines. The docking unit is arranged on the air intake pipe. The multiple storage tubes are respectively connected to the corresponding storage boxes. The storage tubes and the grooves are adapted to each other. The multiple negative pressure machines are respectively arranged inside the corresponding storage boxes.

[0007] In which, the storage component also includes a sealing layer and multiple valves, each storage box has an air intake bin, a negative pressure bin and a storage bin, the sealing layer is arranged on the docking unit, the sealing layer and the storage tube are adapted to each other, the negative pressure machine is arranged inside the negative pressure bin, and the air intake bin, the negative pressure bin, the storage bin and the storage tube are all provided with the valves.

[0008] Wherein, the storage assembly further comprises an air intake unit, and the air intake unit is arranged inside the shell;

[0009] The air intake unit includes a first telescopic hose, a fixed tube, a second telescopic hose, a lifting block and a moving mechanism. The two ends of the first telescopic hose are respectively connected to the universal air intake pipe and one end of the fixed tube, and the two ends of the second telescopic hose are respectively connected to the other end of the fixed tube and the docking unit. The moving mechanism is arranged inside the shell, the lifting block is arranged on the moving mechanism, and the fixed tube is arranged on the lifting block.

[0010] Among them, the moving mechanism includes a lifting screw machine, a transverse screw machine and a connecting plate, the lifting screw machine is arranged inside the outer shell, the lifting block is arranged at the output end of the lifting screw machine, the transverse screw machine is arranged inside the lifting block, one end of the connecting plate is arranged on the transverse screw machine, and the other end of the connecting plate is connected to the docking unit.

[0011] In which, the docking unit includes a docking shell, a sealing shell, multiple sealing convex rings, a rotation limit ring, multiple coalbed methane detection sensors and four sealing drive mechanisms. The docking shell is connected to the second telescopic hose. The sealing shell is arranged on one side of the docking shell. The sealing layer is arranged on the sealing shell. The rotation limit ring is fixedly connected to the sealing shell and is sleeved on the outside of the sealing layer. Multiple sealing convex rings are respectively sleeved on the outside of the corresponding storage pipes. Multiple coalbed methane detection sensors are respectively arranged on the inside of the docking shell and the corresponding storage box. The valve is provided on the docking shell. The four sealing drive mechanisms are distributed on the outside of the docking shell in sequence. The four sealing drive mechanisms are all connected to the sealing layer.

[0012] In which, the sealing drive mechanism includes a support block, a supporting rotary plate, a driving component, a driving gear, a driving component support block, an upper rack, a lower rack and two push blocks, the support block is arranged on the outside of the sealing shell, the supporting rotary plate is rotatably connected to the support block, one end of the supporting rotary plate is rotatably connected to the outside of the sealing layer, the driving component support block is arranged on the outside of the docking shell, the driving component is arranged on the driving component support block, the output end of the driving component is fixedly connected to the driving gear, the driving gear is respectively meshed with the upper rack and the lower rack, the two push blocks are respectively arranged on the upper rack and the lower rack, and the push blocks are adapted to the supporting rotary plate.

[0013] Among them, the sealing drive mechanism also includes a supporting groove and two sliders, the supporting groove is arranged on the outside of the docking shell, one end of the two sliders is slidably connected to the supporting groove, and the other ends of the two sliders are respectively arranged on the upper rack and the lower rack.

[0014] In which, the storage component also includes a control panel, multiple handles, multiple temperature sensors and multiple temperature control units, the multiple temperature control units are respectively arranged on both sides of the corresponding storage boxes, the control panel is arranged on one side of the outer shell, the multiple handles are respectively arranged on the corresponding storage boxes, and the multiple temperature sensors are respectively arranged inside the corresponding storage boxes.

[0015] In which, the temperature control unit includes multiple pushing components, a support frame, multiple heat absorbing plates, multiple heating plates and multiple fans, the outer shell has multiple ventilation slots, multiple pushing components are sequentially arranged on the inner wall of the outer shell, the output ends of multiple pushing components are fixedly connected to the support frame, multiple heat absorbing plates and multiple heating plates are sequentially arranged inside the support frame, and are all attached to one side of the storage box, and multiple fans are all arranged on the support frame and located on one side of the heat absorbing plate and the heating plate.

[0016] The present invention also provides a sample storage system for coalbed methane exploration, which utilizes the above-mentioned sample storage device for coalbed methane exploration.

[0017] The present invention provides a sample storage device and system for coalbed methane exploration, which are connected to the coalbed methane mining device through the universal air inlet pipe, and then the coalbed methane samples enter the storage box for storage through the universal air inlet pipe, the docking unit and the storage tube. When the coalbed methane samples at this depth are stored, a negative pressure machine is first used to generate negative pressure to suck away the coalbed methane remaining in the docking unit and the storage tube, and then the docking unit and the storage tube are separated to carry out docking with other storage boxes. Therefore, before canceling the docking, the negative pressure principle is first used to suck the excess coalbed methane samples into the storage box, so that no coalbed methane leakage will occur during subsequent separation, thereby avoiding pollution of the surrounding environment and waste, thereby ensuring the safety of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0019] Figure 1 It is a structural schematic diagram of a sample storage device for coalbed methane exploration according to the present invention.

[0020] Figure 2 It is a cross-sectional view of a sample storage device for coalbed methane exploration according to the present invention.

[0021] Figure 3 The present invention Figure 2 AA line section view.

[0022] Figure 4 The present invention Figure 2 A magnified view of the local structure at point B.

[0023] Figure 5 The present invention Figure 2 A magnified view of the local structure at point C.

[0024] Figure 6 The present invention Figure 3 Enlarged view of the local structure at point D.

[0025] Figure 7 It is a diagram of the internal structure of the shell of the present invention.

[0026] Figure 8 The present invention Figure 7 Enlarged view of the local structure at E.

[0027] Figure 9 It is a structural schematic diagram of the docking unit of the present invention.

[0028] Figure 10 The present invention Figure 9 A magnified view of the local structure at F.

[0029] 1-housing, 2-universal air inlet pipe, 3-partition rack, 4-storage box, 5-groove, 6-storage pipe, 7-negative pressure machine, 8-sealing layer, 9-valve, 10-air inlet chamber, 11-negative pressure chamber, 12-storage chamber, 13-first telescopic hose, 14-fixed pipe, 15-second telescopic hose, 16-lifting block, 17-lifting screw machine, 18-transverse screw machine, 19-connecting plate, 20-docking shell, 21-sealing shell, 22-sealing convex ring, 23- Rotation limit ring, 24-coalbed methane detection sensor, 25-support block, 26-supporting rotating plate, 27-driving component, 28-driving gear, 29-driving component support block, 30-upper rack, 31-lower rack, 32-push block, 33-support slide, 34-slider, 35-control panel, 36-handle, 37-temperature sensor, 38-pushing component, 39-support frame, 40-heat absorbing plate, 41-heating plate, 42-fan, 43-ventilation slot. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0031] See also Figures 1 to 10 The present invention provides a sample storage device for coalbed methane exploration, comprising a shell 1, a universal air inlet pipe 2, a partition frame 3, a plurality of storage boxes 4 and a storage assembly, wherein the partition frame 3 has a plurality of grooves 5, the storage assembly comprises a docking unit, a plurality of storage pipes 6 and a plurality of negative pressure machines 7, the storage assembly further comprises a sealing layer 8 and a plurality of valves 9, each of the storage boxes 4 has an air inlet bin 10, a negative pressure bin 11 and a storage bin 12, the storage assembly further comprises an air inlet unit, the air inlet unit comprises a first telescopic hose 13, a fixed pipe 14, a second telescopic hose 15, a lifting block 16 and a moving mechanism, the moving mechanism comprises a lifting screw machine 17, a transverse screw machine 18 and a connecting plate 19, the docking unit comprises a docking Shell 20, sealing shell 21, multiple sealing convex rings 22, rotation limit rings 23, multiple coalbed methane detection sensors 24 and four sealing drive mechanisms, the sealing drive mechanism includes a support block 25, a supporting rotating plate 26, a driving component 27, a driving gear 28, a driving component support block 29, an upper rack 30, a lower rack 31 and two push blocks 32, the sealing drive mechanism also includes a support slide 33 and two sliders 34, the storage assembly also includes a control panel 35, multiple handles 36, multiple temperature sensors 37 and multiple temperature control units, the temperature control unit includes multiple pushing components 38, a support frame 39, multiple heat absorbing plates 40, multiple heating plates 41 and multiple fans 42, and the shell 1 has multiple ventilation slots 43.

[0032] In which, the partition frame 3 has multiple grooves 5, the universal air intake pipe 2 is connected to the top of the outer shell 1, the partition frame 3 is arranged inside the outer shell 1, and multiple storage boxes 4 are arranged on the partition frame 3 in sequence. The docking unit is arranged on the air intake pipe, and multiple storage pipes 6 are respectively connected to the corresponding storage boxes 4. The storage pipes 6 and the grooves 5 are adapted to each other, and multiple negative pressure machines 7 are respectively arranged inside the corresponding storage boxes 4. It is connected to the coalbed methane extraction device through the universal air inlet pipe 2, and then the coalbed methane sample enters the storage box 4 for storage through the universal air inlet pipe 2, the docking unit and the storage tube 6. When the coalbed methane sample of the depth is stored, the negative pressure is first generated by the negative pressure machine 7 to suck away the coalbed methane remaining in the docking unit and the storage tube 6, and then the docking unit and the storage tube 6 are separated to carry out docking with other storage boxes 4; in addition, after the storage of the coalbed methane sample is completed, the storage box 4 can be moved out of the outer shell 1; at the same time, when the storage box 4 is installed, the storage tube 6 is located inside the groove 5 so as to be connected to the docking unit.

[0033] Secondly, each of the storage boxes 4 has an air intake bin 10, a negative pressure bin 11 and a storage bin 12, the sealing layer 8 is arranged on the docking unit, the sealing layer 8 and the storage tube 6 are adapted to each other, the negative pressure machine 7 is arranged inside the negative pressure bin 11, and the air intake bin 10, the negative pressure bin 11, the storage bin 12 and the storage tube 6 are all provided with the valve 9. During docking, the sealing layer 8 is wrapped around the outside of the storage tube 6, thereby playing a sealing role. The coalbed methane sample reaches the storage tube 6 through the docking unit, and then reaches the storage bin 12 through the air inlet bin 10, completing the sample storage; and when negative pressure suction is required, first start the valve 9 inside the docking unit and the storage tube 6, close the docking unit and the storage tube 6, and confine the remaining coalbed methane sample to the docking area of ​​the storage tube 6. At this time, close the valve 9 of the storage bin 12 to prevent excess coalbed methane samples from entering, and then start the negative pressure machine 7. When the negative pressure of the negative pressure bin 11 reaches the preset value, open the valve 9 of the negative pressure bin 11 and the valve 9 of the storage tube 6, and all the coalbed methane samples remaining in the air inlet bin 10, the storage tube 6 and the docking unit can be sucked into the negative pressure bin 11 for storage.

[0034] Meanwhile, the air intake unit is disposed within the housing 1; the two ends of the first telescopic hose 13 are respectively connected to the universal air intake pipe 2 and one end of the fixed pipe 14; the two ends of the second telescopic hose 15 are respectively connected to the other end of the fixed pipe 14 and the docking unit. The movable mechanism is disposed within the housing 1; the lifting block 16 is disposed on the movable mechanism; and the fixed pipe 14 is disposed on the lifting block 16. The movable mechanism can drive the docking unit to move up and down and forward and backward, thereby docking with the storage pipe 6. When lifting, the movable mechanism drives the lifting block 16 up and down, while the first telescopic hose 13 is also extended and retracted, thereby adapting to different heights of the docking unit. When moving forward and backward, the second telescopic hose 15 moves with the docking unit to adapt to different positions.

[0035] In addition, the lifting screw machine 17 is disposed inside the housing 1, the lifting block 16 is disposed at the output end of the lifting screw machine 17, the transverse screw machine 18 is disposed inside the lifting block 16, one end of the connecting plate 19 is disposed on the transverse screw machine 18, and the other end of the connecting plate 19 is connected to the docking unit. When the lifting screw machine 17 is activated, it drives the lifting block 16 to adjust its height. At the same time, a camera and a high-precision sensor are disposed on the lifting block 16 to align it with the storage tube 6. Then, the transverse screw machine 18 is activated again, driving the connecting plate 19 to move, thereby driving the docking unit to move toward the storage tube 6 to complete the docking.

[0036] Then, the docking shell 20 is connected to the second telescopic hose 15, the sealing shell 21 is arranged on one side of the docking shell 20, the sealing layer 8 is arranged on the sealing shell 21, the rotation limit ring 23 is fixedly connected to the sealing shell 21, and is sleeved on the outside of the sealing layer 8, and multiple sealing convex rings 22 are respectively sleeved on the outside of the corresponding storage pipes 6, and multiple coalbed methane detection sensors 24 are respectively arranged in the docking shell 20 and the corresponding storage box 4. The valve 9 is provided on the docking shell 20, and the four sealing drive mechanisms are distributed in sequence on the outside of the docking shell 20, and the four sealing drive mechanisms are all connected to the sealing layer 8. The coalbed methane sample passes through the first telescopic hose 13, the fixed tube 14 and the second telescopic hose 15 to reach the docking shell 20, and then enters the storage tube 6 through the sealing shell 21; during docking, the transverse screw machine 18 drives the connecting plate 19 to move, so that the docking shell 20 moves closer to the storage tube 6, and at the same time, the sealing drive mechanism drives one end of the sealing layer 8 to rotate around the rotation limit ring 23, forming an outwardly open state, so that the storage tube 6 completely enters the sealing shell 21 to complete the sealing. At this time, one end of the sealing layer 8 shrinks and fits against the outer wall of the storage tube 6. At this time, the sealing groove 5 set inside the sealing layer 8 is adapted to the sealing convex ring 22 to increase the sealing performance, thereby completing a tight docking and preventing coalbed methane leakage. Then negative pressure suction can be performed until the coalbed methane detection sensor 24 detects that the coalbed methane content in the docking shell 20 is lower than the preset value, and then the docking shell 20 and the storage tube 6 can be separated.

[0037] Again, the support block 25 is arranged on the outside of the sealing shell 21, the supporting rotary plate 26 is rotatably connected to the support block 25, one end of the supporting rotary plate 26 is rotatably connected to the outside of the sealing layer 8, the driving component support block 29 is arranged on the outside of the docking shell 20, the driving component 27 is arranged on the driving component support block 29, the output end of the driving component 27 is fixedly connected to the driving gear 28, the driving gear 28 is respectively engaged with the upper rack 30 and the lower rack 31, the two push blocks 32 are respectively arranged on the upper rack 30 and the lower rack 31, and the push blocks 32 are adapted to the supporting rotary plate 26. The support block 25 supports the abutting rotating plate 26, the driving component 27 is a self-locking motor, and the driving component support block 29 supports the driving variable; first, the driving component 27 is started, driving the driving gear 28 to rotate, and then driving the upper rack 30 and the lower rack 31 to move simultaneously, and the upper rack 30 moves to the right, driving the pushing block 32 to push one end of the abutting rotating plate 26, so that the abutting rotating plate 26 rotates, so that the other end of the abutting rotating plate 26 presses the sealing layer 8 downward, so that one end of the sealing layer 8 is tightened to the outer wall of the storage tube 6 to achieve sealing, and the lower rack 31 moves to the left to make room for the rotation of the abutting rotating plate 26; if the sealing layer 8 needs to expand outward, the lower rack 31 is moved to the right, and the upper rack 30 can be moved.

[0038] Furthermore, the support groove 33 is provided on the outside of the docking housing 20. One end of each of the two sliders 34 is slidably connected to the support groove 33, and the other ends of the two sliders 34 are respectively provided on the upper rack 30 and the lower rack 31. When the upper rack 30 and the lower rack 31 move, the sliders 34 move within the support groove 33, thereby maintaining the stability of the movement of the upper rack 30 and the lower rack 31 and preventing shaking.

[0039] Thus, the plurality of temperature control units are respectively arranged on both sides of the corresponding storage box 4, the control panel 35 is arranged on one side of the housing 1, the plurality of handles 36 are respectively arranged on the corresponding storage box 4, and the plurality of temperature sensors 37 are respectively arranged inside the corresponding storage box 4. The control panel 35 is connected to each sensor and the valve 9, thereby allowing staff to observe the coalbed methane transmission status; when the storage box 4 needs to be removed, it can be pulled out of the partition frame 3 by grasping the handle 36; the temperature sensor 37 is used to detect the temperature of the coalbed methane sample inside the storage box 4 to prevent the temperature from deviating from the normal coalbed methane temperature and causing safety accidents. The temperature control unit controls the temperature of the storage box 4 based on the temperature feedback from the temperature sensor 37, so that the temperature remains within a preset safety range.

[0040] Finally, the shell 1 has a plurality of ventilation slots 43, and the plurality of pushing components 38 are sequentially arranged on the inner wall of the shell 1. The output ends of the plurality of pushing components 38 are fixedly connected to the support frame 39. The plurality of heat absorbing plates 40 and the plurality of heating plates 41 are sequentially arranged inside the support frame 39 and are all fitted with one side of the storage box 4. The plurality of fans 42 are all arranged on the support frame 39 and are located on one side of the heat absorbing plate 40 and the heating plate 41. The pushing component 38 is a self-locking motor. When the pushing component 38 is started, it drives the support frame 39 to move, so that the multiple heat absorbing plates 40 and the multiple heating plates 41 are close to the storage box 4. When the temperature is too low, the heating plate 41 is started. The heating plate 41 is provided with a heating wire inside, thereby heating the storage box 4; when the temperature is too high, the fan 42 is started to suck the external air into the outer shell 1 through the ventilation slot 43 to cool the heat absorbing plate 40. At the same time, the heat absorbing plate 40 is made of metal copper and can quickly absorb heat, thereby achieving cooling of the storage box 4.

[0041] When using the sample storage device for coalbed methane exploration of the present embodiment, the universal air inlet pipe 2 is connected to the coalbed methane extraction device, and then the coalbed methane sample enters the storage box 4 for storage through the universal air inlet pipe 2, the docking shell 20 and the storage tube 6. When the coalbed methane sample of the depth is stored, the valve 9 inside the docking shell 20 and the storage tube 6 is started to close the docking unit and the storage tube 6, and the remaining coalbed methane sample is confined to the docking area of ​​the storage tube 6. At this time, the storage bin is closed. The valve 9 of 12 prevents excess coalbed methane samples from entering, and then the negative pressure machine 7 is started. When the negative pressure of the negative pressure chamber 11 reaches a preset value, the valve 9 of the negative pressure chamber 11 and the valve 9 of the storage tube 6 are opened, so that all the coalbed methane samples remaining in the air inlet chamber 10, the storage tube 6 and the docking shell 20 can be sucked into the negative pressure chamber 11 for storage. At this time, the docking shell 20 and the storage tube 6 are separated, and other storage boxes 4 are docked, thereby completing the storage of different coalbed methane samples in sequence;

[0042] In addition, a plurality of storage boxes 4 are provided on the partition frame 3 of the present application. When storing coalbed methane samples, the bottom storage box 4 can be used as a waste gas storage area. After each coalbed methane sample is transported, even if the present application has extracted the residual coalbed methane sample between the docking shell 20 and the storage tube 6 through the negative pressure machine 7, there must be residual coalbed methane sample in the first telescopic hose 13 and the second telescopic hose 15. Therefore, before the next docking storage, it is necessary to first dock the docking shell 20 with the bottom storage box 4 first, and first continuously transport the coalbed methane sample for 5 seconds to fully discharge the residual coalbed methane sample in the first telescopic hose 13 and the second telescopic hose 15. Then, the docking shell 20 is docked with the required storage box 4, thereby fully avoiding the mixing of coalbed methane samples.

[0043] Through the above-mentioned structural setting, before canceling the docking, the negative pressure principle is first used to suck the excess coalbed methane sample into the storage box 4, so that no coalbed methane leakage will occur during subsequent separation, avoiding pollution of the surrounding environment, and no waste, thereby ensuring the safety of the staff. In addition, through the action of the docking unit, the sealing effect of the coalbed methane transportation is significantly improved, and the mutual influence of coalbed methane between multiple storage boxes 4 can be avoided.

[0044] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. A sample storage device for coalbed methane exploration, comprising a housing, a universal air inlet pipe, a partition frame, and a plurality of storage boxes, wherein the partition frame has a plurality of grooves, the universal air inlet pipe is connected to the upper portion of the housing, the partition frame is arranged inside the housing, and the plurality of storage boxes are sequentially arranged on the partition frame, characterized in that: Also included are storage components; The storage assembly includes a docking unit, multiple storage tubes and multiple negative pressure machines. The docking unit is arranged on the air intake pipe. The multiple storage tubes are respectively connected to the corresponding storage boxes. The storage tubes and the grooves are adapted to each other. The multiple negative pressure machines are respectively arranged inside the corresponding storage boxes.

2. The sample storage device for coalbed methane exploration according to claim 1, characterized in that: The storage assembly also includes a sealing layer and multiple valves. Each storage box has an air intake bin, a negative pressure bin and a storage bin. The sealing layer is arranged on the docking unit. The sealing layer and the storage tube are adapted to each other. The negative pressure machine is arranged inside the negative pressure bin. The air intake bin, the negative pressure bin, the storage bin and the storage tube are all provided with the valves.

3. The sample storage device for coalbed methane exploration according to claim 2, characterized in that: The storage assembly further includes an air intake unit, which is disposed inside the housing; The air intake unit includes a first telescopic hose, a fixed tube, a second telescopic hose, a lifting block and a moving mechanism. The two ends of the first telescopic hose are respectively connected to the universal air intake pipe and one end of the fixed tube, and the two ends of the second telescopic hose are respectively connected to the other end of the fixed tube and the docking unit. The moving mechanism is arranged inside the shell, the lifting block is arranged on the moving mechanism, and the fixed tube is arranged on the lifting block.

4. The sample storage device for coalbed methane exploration according to claim 3, characterized in that: The moving mechanism includes a lifting screw machine, a transverse screw machine and a connecting plate. The lifting screw machine is arranged inside the outer shell, the lifting block is arranged at the output end of the lifting screw machine, the transverse screw machine is arranged inside the lifting block, one end of the connecting plate is arranged on the transverse screw machine, and the other end of the connecting plate is connected to the docking unit.

5. The sample storage device for coalbed methane exploration according to claim 4, characterized in that: The docking unit includes a docking shell, a sealing shell, multiple sealing convex rings, a rotation limit ring, multiple coalbed methane detection sensors and four sealing drive mechanisms. The docking shell is connected to the second telescopic hose. The sealing shell is arranged on one side of the docking shell. The sealing layer is arranged on the sealing shell. The rotation limit ring is fixedly connected to the sealing shell and is sleeved on the outside of the sealing layer. Multiple sealing convex rings are respectively sleeved on the outside of the corresponding storage pipes. Multiple coalbed methane detection sensors are respectively arranged on the inside of the docking shell and the corresponding storage box. The valve is provided on the docking shell. The four sealing drive mechanisms are distributed in sequence on the outside of the docking shell. The four sealing drive mechanisms are all connected to the sealing layer.

6. The sample storage device for coalbed methane exploration according to claim 5, characterized in that: The sealing drive mechanism includes a support block, a supporting rotary plate, a driving component, a driving gear, a driving component support block, an upper rack, a lower rack and two push blocks. The support block is arranged on the outside of the sealing shell, the supporting rotary plate is rotatably connected to the support block, one end of the supporting rotary plate is rotatably connected to the outside of the sealing layer, the driving component support block is arranged on the outside of the docking shell, the driving component is arranged on the driving component support block, the output end of the driving component is fixedly connected to the driving gear, the driving gear is respectively meshed with the upper rack and the lower rack, the two push blocks are respectively arranged on the upper rack and the lower rack, and the push blocks are adapted to the supporting rotary plate.

7. The sample storage device for coalbed methane exploration according to claim 6, characterized in that: The sealing drive mechanism also includes a supporting groove and two sliders. The supporting groove is arranged on the outside of the docking shell. One end of the two sliders is slidably connected to the supporting groove, and the other ends of the two sliders are respectively arranged on the upper rack and the lower rack.

8. The sample storage device for coalbed methane exploration according to claim 7, characterized in that: The storage assembly also includes a control panel, multiple handles, multiple temperature sensors and multiple temperature control units. The multiple temperature control units are respectively arranged on both sides of the corresponding storage boxes, the control panel is arranged on one side of the outer shell, the multiple handles are respectively arranged on the corresponding storage boxes, and the multiple temperature sensors are respectively arranged inside the corresponding storage boxes.

9. The sample storage device for coalbed methane exploration according to claim 8, characterized in that: The temperature control unit includes multiple pushing components, a support frame, multiple heat absorbing plates, multiple heating plates and multiple fans. The shell has multiple ventilation slots. The multiple pushing components are sequentially arranged on the inner wall of the shell. The output ends of the multiple pushing components are fixedly connected to the support frame. The multiple heat absorbing plates and the multiple heating plates are sequentially arranged inside the support frame and are all attached to one side of the storage box. The multiple fans are all arranged on the support frame and are located on one side of the heat absorbing plate and the heating plate.

10. A sample storage system for coalbed methane exploration, characterized in that: Use the sample storage device for coalbed methane exploration as described in claim 9.

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