Metering and monitoring equipment for carbon sequestration in grassland

Abstract

The utility model belongs to the technical field of carbon sink monitoring, particularly relates to grassland carbon sink metering and monitoring equipment, and provides the following scheme aiming at the problems of poor portability, insufficient sealing performance and inaccurate monitoring data of the existing grassland carbon sink monitoring equipment: the grassland carbon sink metering and monitoring equipment comprises a cover body assembly and a monitoring assembly. According to the cover body assembly, the outer cover and the inner cover which are movably inserted are adopted to form a telescopic structure, and reliable sealing is achieved through matching of the inclined faces of the lower butt joint ring and the upper butt joint ring and the cover body sealing air bag; a bottom ring sealing air bag and an annular hollow inserting plate are arranged at the bottom of the fixed bottom ring, and an elastic membrane on the inner side of the inserting plate swells cooperatively when the air bag is inflated, so that the sealing performance with the ground and the anti-lifting capacity are enhanced; the height of the monitoring assembly can be adjusted through a hollow hanging rod and a clamping rubber sleeve, and a monitoring sensor set in a vent pipe can collect gas samples fully mixed through a micro suction ventilator and an air collecting cover.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of monitoring equipment, specifically a kind of grassland carbon sink measurement monitoring equipment, belong to carbon sink monitoring technical field. BACKGROUND

[0002] Grassland ecosystem plays an important role in terrestrial carbon cycle, and accurate measurement of its carbon sink capacity is of great significance for ecological research and environmental management. Static chamber method is one of the methods commonly used to measure ecosystem carbon flux, which forms a closed space by covering a specific cavity on the grassland surface and monitors the changes in gas concentration inside the chamber to calculate the flux value.

[0003] In the existing grassland carbon sink monitoring technology, static chamber method is widely used due to its simple principle and easy operation, but traditional equipment has a series of technical limitations. For example, a forest soil carbon sink measurement monitoring device and method disclosed in publication No. CN119470772A uses excavation sampling method to ensure the integrity of the sampling sample through the combination design of sampling cylinder and excavation shovel. Although this method can obtain complete cylindrical soil samples, it has great destructive effect on grassland ecosystem, changes the soil structure, and may cut off plant roots and mycorrhizal networks, significantly affecting the natural state representativeness of monitoring data; for example, a collection device for distributed forest carbon sink detection disclosed in publication No. CN222419691U realizes the lifting function of the detection box through the cooperation of the equipment box, hydraulic rod and detection box, solves the problem of excessive volume of the equipment during transportation and storage. The device is also equipped with a gas pump, air suction fan and temperature control system to improve the accuracy of detection. However, such devices have deficiencies in sealing performance, especially when dealing with uneven grassland terrain, it is difficult to ensure the air tightness of the monitoring cavity, and the single nature of the monitoring point may lead to insufficient data representativeness.

[0004] In summary, traditional monitoring equipment has a prominent contradiction between portability and functionality. The fixed-volume cover cannot adapt to the monitoring needs of grassland vegetation of different heights, and the single monitoring point cannot capture the spatial heterogeneity of grassland ecosystem, resulting in high contingency and insufficient representativeness of monitoring data. Secondly, the poor sealing performance of existing equipment seriously affects the monitoring accuracy, especially the gas leakage problem at the cover connection and ground contact parts, which cannot ensure the air tightness required by static chamber method, and traditional fixed sealing cannot adapt to various complex and uneven grassland surfaces. Moreover, the stability of the equipment during monitoring is not guaranteed, and wind or human disturbance in the field environment can easily cause the equipment to shift or shake, damage the sealing state and cause measurement errors. Single-position gas sampling cannot reflect the real mixing concentration of gas inside the cover, and there is a measurement deviation problem caused by local dead angle, and the lack of active air circulation system exacerbates the gas stratification phenomenon. SUMMARY

[0005] The utility model discloses provide a grassland carbon sink measurement monitoring equipment for solving the poor portability of existing grassland carbon sink monitoring equipment, the insufficient sealing and the inaccurate monitoring data problem.

[0006] The utility model discloses a grassland carbon sink measurement monitoring equipment, including cover body subassembly and monitoring subassembly, cover body subassembly covers and is established on the grassland ground, and monitoring subassembly is placed in cover body subassembly, and the cover body of cover body subassembly is telescopic, and the installation height of monitoring subassembly is adjustable in cover body subassembly,

[0007] Cover body subassembly includes the outer cover and inner cover of movable and inserts setting, and the bottom end inner wall of outer cover is fixedly connected with the butt joint lower ring, and the upper end outer wall of inner cover is fixedly connected with the butt joint upper ring, and the butt joint lower ring and butt joint upper ring are in the cover body expansion shape and are clamped together, and the butt joint parts of two are provided with cover body sealing air bag,

[0008] The bottom end outer wall of inner cover is fixedly connected with fixed bottom ring, and the bottom ring sealing air bag and annular hollow plugboard of communication setting are connected to the bottom of the ring body of fixed bottom ring, and the inside plate body of annular hollow plugboard is connected with a plurality of elastic diaphragms,

[0009] Monitoring subassembly includes hollow derrick and monitoring sensor group, and the rod body of hollow derrick is sleeved with clamping rubber sleeve, and clamping rubber sleeve is fixedly connected in the middle position of the top of outer cover and is in the tightening state, and the bottom end of hollow derrick in cover body subassembly is connected with vent pipe, and monitoring sensor group is fixedly connected to the inner wall of vent pipe.

[0010] As the further scheme of the utility model: the outside of cover body subassembly movably is provided with shell assembly, and shell assembly includes upper shell and lower shell, and the cover body of outer cover is fixedly connected with butt joint table ring, and upper shell and lower shell are respectively inserted in the upper and lower butt joint table surface of butt joint table ring, and the middle position of the top of upper shell is communicated with outer sleeve, and outer sleeve covers the outside of hollow derrick.

[0011] As the further scheme of the utility model: butt joint table ring is embedded with storage battery, and wire is arranged in the hollow cavity of hollow derrick, and storage battery and monitoring sensor group are electrically connected through wire.

[0012] As the further scheme of the utility model: the bottom ring body of butt joint table ring is provided with a plurality of thread grooves, and the ring body of fixed bottom ring is connected with fixed plug rod, and fixed plug rod and thread groove are one-to-one corresponding, and the top of each fixed plug rod is fixedly connected with threaded insert block, and the bottom of each fixed plug rod is fixedly connected with sharp end bottom rod, and the diameter of threaded insert block and sharp end bottom rod is greater than the diameter of fixed plug rod, and threaded insert block is screwed in thread groove when cover body is contracted.

[0013] As a further scheme of the utility model: the opposite surface of the butt joint lower ring and the butt joint upper ring is in the form of an inclined surface, the part of the cover body sealing air bag is embedded in the butt joint lower ring, the bottom end of the cover body is embedded and connected with a cover body valve core, and the cover body valve core is communicated with the cover body sealing air bag.

[0014] As a further scheme of the utility model: the bottom surface of the fixed bottom ring is provided with an annular bottom groove, the bottom ring sealing air bag is fixedly connected in the annular bottom groove, the ring body of the fixed bottom ring is embedded and connected with a bottom ring valve core, and the bottom ring valve core is communicated with the bottom ring sealing air bag.

[0015] As a further scheme of the utility model: the top end of the cover is connected with a threaded insertion pipe, the bottom end of the threaded insertion pipe is connected with an inner concave conical surface pipe, the monitoring assembly further comprises an integral connection of a screwing seat and a threaded seat, the rod body of the hollow suspender is connected through the screwing seat and the threaded seat, the upper rubber sleeve of the clamping rubber sleeve is embedded in the threaded seat, and when the threaded seat is screwed with the threaded insertion pipe, the lower rubber sleeve of the clamping rubber sleeve is clamped in the inner concave conical surface pipe.

[0016] As a further scheme of the utility model: the lower rubber sleeve of the clamping rubber sleeve is provided with an opening groove arranged in a symmetrical manner.

[0017] As a further scheme of the utility model: a plurality of inclined support connecting rods are connected between the hollow suspender and the air pipe, the bottom end of the air pipe is communicated with a wind collecting cover, and a micro air suction fan is installed at the connecting position of the air pipe and the wind collecting cover.

[0018] The utility model has the advantages of:

[0019] 1、The utility model is provided with a cover body assembly and a monitoring assembly, the cover body of the cover body assembly is telescopic, the installation height of the monitoring assembly in the cover body assembly is adjustable, the cover body assembly is designed as a telescopic structure, so that the overall volume of the equipment can be greatly reduced when being folded and unfolded, the portability is improved, and the equipment is particularly suitable for mobile monitoring operation in complex terrain environments in the wild, and the installation height of the monitoring assembly in the cover body assembly is adjustable, so that the equipment can flexibly adapt to grassland vegetation communities of different heights, whether it is a low grassland or a high grassland with lush growth, the installation height of the monitoring assembly can be adjusted to ensure that the measurement monitoring is carried out at the most suitable position.

[0020] 2、The utility model discloses a cover body subassembly that is provided with an outer cover and an inner cover, the bottom end inner wall of the outer cover is fixedly connected with a butt joint lower ring, the upper end outer wall of the inner cover is fixedly connected with a butt joint upper ring, the butt joint lower ring and the butt joint upper ring are clamped together in alignment when the cover body is unfolded, the butt joint parts of the two are provided with a cover body sealing air bag, the outer cover and the inner cover that are movably inserted constitute a telescopic structure, the height of the cover body can be flexibly adjusted through relative sliding, the butt joint lower ring and the butt joint upper ring form an alignment clamping structure, the cover body subassembly can maintain overall rigidity in the unfolded state, the cover body sealing air bag provided at the butt joint parts of the butt joint lower ring and the butt joint upper ring plays a sealing role, the cover body sealing air bag can tightly fill all gaps between the butt joint rings after inflation, and the air tightness required for static box method monitoring is ensured.

[0021] 3、The utility model discloses that the bottom end outer wall of the inner cover is fixedly connected with a fixed bottom ring, the bottom of the ring body of the fixed bottom ring is connected with a bottom ring sealing air bag and a ring hollow plug -in board that are communicatively arranged, the inner side plate body of the ring hollow plug -in board is connected with a plurality of elastic diaphragms, the fixed bottom ring provides a stable support basis for the whole cover body subassembly; the bottom ring sealing air bag and the ring hollow plug -in board that are communicatively arranged at the bottom of the ring body of the fixed bottom ring constitute a double sealing that works cooperatively, the ring hollow plug -in board can be inserted into the surface layer of soil first, forming a preliminary mechanical seal, and the plurality of elastic diaphragms connected with the inner side plate body can expand outward simultaneously when the bottom ring sealing air bag inflates, the expansion of the elastic diaphragms enhances the contact area and frictional resistance with soil particles, the ring hollow plug -in board is effectively prevented from being lifted upward in the monitoring process due to the air pressure difference between the inside and outside of the box or external force through the horizontal direction fastening force, and the stability of the equipment during monitoring is ensured; meanwhile, the flexible sealing belt formed after the bottom ring sealing air bag inflates can adapt to the uneven condition of the ground, and sealing can be realized under various complex ground conditions.

[0022] 4、The utility model discloses a monitoring assembly that comprises a hollow boom and a monitoring sensor group, the rod body of the hollow boom is sleeved with a clamping rubber sleeve, the clamping rubber sleeve is fixedly connected in a tightening state at the top middle part of the outer cover, the bottom end of the hollow boom in the cover body subassembly is connected with a breather pipe, and the monitoring sensor group is fixedly connected to the inner wall of the breather pipe; the monitoring assembly adopts a hollow boom as a support structure, the clamping rubber sleeve sleeved on the rod body is fixedly connected in a tightening state at the top middle part of the outer cover, the center suspension type fixing mode ensures the stability of the monitoring sensor group in the cover body and realizes flexible adjustment of the installation height, so that technical personnel can optimize the position of the monitoring sensor group according to monitoring requirements; the breather pipe ensures sufficient contact of the monitoring sensor group with the gas in the cover body, avoiding measurement deviation caused by placing the sensor in a local dead angle. DRAWINGS

[0023] Figure 1 It is a whole unfolded state structural schematic view of the utility model;

[0024] Figure 2 It is the whole state structure schematic diagram of the utility model;

[0025] Figure 3 It is the internal structure schematic diagram of the utility model cover;

[0026] Figure 4 It is the utility model Figure 3 Structure schematic diagram of A place in the middle;

[0027] Figure 5 It is the internal structure schematic diagram of the utility model cover;

[0028] Figure 6 It is the utility model Figure 5 Structure schematic diagram of B place in the middle;

[0029] Figure 7 It is the utility model cover and the internal cover butt joint part local amplification structure schematic diagram;

[0030] Figure 8 It is the utility model cover body assembly state thread groove and thread insert block alignment structure schematic diagram;

[0031] Figure 9 It is the utility model annular hollow insert plate local section structure schematic diagram;

[0032] Figure 10 It is the utility model monitoring assembly structure schematic diagram;

[0033] Figure 11 It is the utility model hollow boom, thread seat and clamping rubber sleeve split state section structure schematic diagram.

[0034] In the drawing: 1, shell assembly;11, upper shell;12, outer sleeve;13, lower shell;2, cover body assembly;21, cover;22, internal cover;23, butt joint ring;24, battery;25, thread groove;26, butt joint lower ring;27, threaded insert tube;28, internal recessed conical surface tube;29, cover body sealing air bag;210, cover body valve core;211, butt joint upper ring;212, fixed bottom ring;213, fixed insert rod;214, threaded insert block;215, sharp end bottom rod;216, annular bottom groove;217, bottom ring sealing air bag;218, bottom ring valve core;219, annular hollow insert plate;220, elastic diaphragm;3, monitoring assembly;31, hollow boom;32, screw seat;33, thread seat;34, clamping rubber sleeve;35, opening groove;36, inclined strut connecting rod;37, air pipe;38, micro air suction fan;39, wind collecting cover;310, monitoring sensor group. DETAILED DESCRIPTION

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Example 1

[0037] like Figures 1 to 11 As shown, a grassland carbon sequestration metering and monitoring device includes a cover assembly 2 and a monitoring component 3. The cover assembly 2 is placed on the grassland ground, and the monitoring component 3 is placed inside the cover assembly 2. The cover body of the cover assembly 2 is telescopic, and the installation height of the monitoring component 3 inside the cover assembly 2 is adjustable. By designing the cover assembly 2 as a telescopic structure, the overall volume of the device can be greatly reduced when it is extended or retracted, improving portability. It is particularly suitable for mobile monitoring operations in complex terrain environments in the field. The adjustable installation height of the monitoring component 3 inside the cover assembly 2 allows the device to flexibly adapt to grassland vegetation communities of different heights. Whether it is low grassland or lush tall grass area, the metering and monitoring can be carried out at the most suitable position by adjusting the installation height of the monitoring component 3.

[0038] The cover assembly 2 includes an outer cover 21 and an inner cover 22 that are movably inserted. A lower connecting ring 26 is fixedly connected to the inner wall of the bottom end of the outer cover 21, and an upper connecting ring 211 is fixedly connected to the outer wall of the upper end of the inner cover 22. When the cover is unfolded, the lower connecting ring 26 and the upper connecting ring 211 are aligned and locked together, and a cover sealing airbag 29 is provided at the docking point of the two. The movably inserted outer cover 21 and inner cover 22 form a telescopic structure, and the height of the cover can be flexibly adjusted by relative sliding. The lower connecting ring 26 and the upper connecting ring 211 form an alignment and locking structure to ensure that the cover assembly 2 can maintain overall rigidity in the unfolded state. The cover sealing airbag 29 at the docking point of the lower connecting ring 26 and the upper connecting ring 211 plays a sealing role. After inflation, the cover sealing airbag 29 can tightly fill all gaps between the connecting rings, ensuring the airtightness required for static box method monitoring.

[0039] The bottom end outer wall of the inner cover 22 is fixedly connected with a fixed bottom ring 212, the bottom of the ring body of the fixed bottom ring 212 is connected with a bottom ring sealing air bag 217 and a ring-shaped hollow plug plate 219 which are communicated, the inner side plate body of the ring-shaped hollow plug plate 219 is connected with a plurality of elastic diaphragms 220, and the fixed bottom ring 212 provides a stable support foundation for the entire cover body assembly 2; the bottom ring sealing air bag 217 and the ring-shaped hollow plug plate 219 which are communicated at the bottom of the ring body of the fixed bottom ring 212 constitute a double sealing which cooperates, the ring-shaped hollow plug plate 219 can be inserted into the surface layer of the soil first to form a preliminary mechanical sealing, and the plurality of elastic diaphragms 220 connected with the inner side plate body can be expanded outward synchronously when the bottom ring sealing air bag 217 is inflated, the expansion of the elastic diaphragms 220 enhances the contact area and frictional resistance with soil particles, the horizontal fastening force effectively prevents the ring-shaped hollow plug plate 219 from being lifted upward in the monitoring process due to the difference in air pressure inside and outside the box or external force, and ensures the stability of the equipment during monitoring; meanwhile, the flexible sealing belt formed after the bottom ring sealing air bag 217 is inflated can adapt to the uneven ground conditions, and ensure that sealing can be achieved under various complex ground conditions.

[0040] The monitoring assembly 3 comprises a hollow boom 31 and a monitoring sensor group 310, the rod body of the hollow boom 31 is sleeved with a clamping rubber sleeve 34, the clamping rubber sleeve 34 is fixedly connected in a tightening manner at the top middle part of the outer cover 21, the bottom end of the hollow boom 31 located in the cover body assembly 2 is connected with a ventilation pipe 37, and the monitoring sensor group 310 is fixedly connected to the inner wall of the ventilation pipe 37; the monitoring assembly 3 adopts the hollow boom 31 as a support structure, the clamping rubber sleeve 34 sleeved on the rod body is fixedly connected in a tightening manner at the top middle part of the outer cover 21 in a central suspension type, which not only ensures the stability of the monitoring sensor group 310 in the cover body, but also realizes flexible adjustment of the installation height, so that the technician can optimize the position of the monitoring sensor group 310 according to the monitoring requirement; the ventilation pipe 37 ensures sufficient contact of the monitoring sensor group 310 with the gas in the cover body, avoids measurement deviation caused by placing the sensor in a local dead angle, and it should be noted that the monitoring sensor group 310 can adopt the monitoring sensor involved in the integrated environmental sensor assembly disclosed in the publication No. CN222027727U.

[0041] Embodiment two

[0042] On the basis of embodiment one, improvements are made:

[0043] As Figures 1 to 9As shown, the outer side of the cover body assembly 2 is movably provided with the shell assembly 1, which includes an upper shell 11 and a lower shell 13, and the cover body 21 of the outer cover 21 is fixedly connected with a docking table ring 23, the upper and lower docking table surfaces of the docking table ring 23 are respectively inserted in position, the outer sleeve 12 is communicated with the top end of the upper shell 11, and the outer sleeve 12 covers the outer side of the hollow boom 31. The shell assembly 1 movably surrounds the outer side of the cover body assembly 2, thereby providing all-round protection for the cover body assembly 2 and the monitoring assembly 3, effectively preventing damage to the equipment due to bumps, extrusion or external environmental factors during transportation, storage and intervals between field operations; the upper and lower docking table surfaces of the docking table ring 23 are inserted in position, so that the assembly and disassembly process of the equipment is extremely simple, the outer sleeve 12 provides a special protection channel for the hollow boom 31, avoiding the bending, deformation or damage of the hollow boom 31 exposed to the outside in the non-use state.

[0044] Further, the docking table ring 23 is embedded with a storage battery 24, wires are arranged in the hollow cavity of the hollow boom 31, and the storage battery 24 is electrically connected with the monitoring sensor group 310 through the wires. Embedding the storage battery 24 in the docking table ring 23 not only saves the internal space of the equipment, maintains the compactness and aesthetics of the whole equipment, but also enables the equipment to have the ability to work independently for a long time in a remote field environment without external power supply.

[0045] Further, a plurality of threaded grooves 25 are formed in the bottom of the docking table ring 23, the ring body of the fixed bottom ring 212 is connected with a fixed insertion rod 213, the fixed insertion rod 213 is arranged in one-to-one correspondence with the threaded grooves 25, the top end of each fixed insertion rod 213 is fixedly connected with a threaded insertion block 214, the bottom end of each fixed insertion rod 213 is fixedly connected with a pointed bottom rod 215, and the diameters of the threaded insertion block 214 and the pointed bottom rod 215 are greater than the diameter of the fixed insertion rod 213. When the cover body assembly 2 is in the retracted state, the threaded insertion block 214 is screwed in the threaded groove 25. Through the screwing of the threaded insertion block 214 at the top end of the fixed insertion rod 213 and the threaded groove 25 at the bottom of the docking table ring 23, the cover body assembly 2 in the telescopic state can be firmly locked in the retracted position when the equipment is stored, effectively preventing the loosening, mutual collision or accidental unfolding of the components due to vibration during transportation. When the equipment needs to be put into use, the fixed insertion rod 213 is unscrewed from the threaded groove 25, and the pointed bottom rod 215 at the bottom end of the fixed insertion rod 213 is inserted into the ground, thereby stably fixing the whole equipment on the monitoring point. The threaded insertion block 214 and the pointed bottom rod 215 form an effective double limiting structure, which prevents the fixed insertion rod 213 from being excessively inserted into the ground and being difficult to pull out, and ensures the accurate positioning and firmness during screwing. The plurality of fixed insertion rods 213 are distributedly arranged to provide balanced anchoring force for the equipment from multiple directions, preventing the equipment from overturning or shifting.

[0046] Further, the opposite surface of the docking lower ring 26 and the docking upper ring 211 is designed as a slope, and part of the body of the cover body sealing air bag 29 is embedded in the docking lower ring 26. The bottom end of the cover body 21 is embeddedly connected with the cover body valve core 210, and the cover body valve core 210 is in communication with the cover body sealing air bag 29. The opposite surface of the docking lower ring 26 and the docking upper ring 211 is designed as a slope, which increases the effective sealing contact area and forms a longer sealing path. Part of the body of the cover body sealing air bag 29 is embedded in the docking lower ring 26, which can prevent the cover body sealing air bag 29 from being scratched or squeezed during repeated docking and separation. It also ensures that the cover body sealing air bag 29 can deform uniformly along the preset direction when inflated, and accurately fill the slope gap between the docking rings. The cover body valve core 210 provides a gas charging and discharging channel for the cover body sealing air bag 29. The user only needs to use a standard air needle to quickly complete the pressure adjustment of the air bag.

[0047] Further, the bottom surface of the fixed bottom ring 212 is provided with an annular bottom groove 216, and the bottom ring sealing air bag 217 is fixedly connected in the annular bottom groove 216. The ring body of the fixed bottom ring 212 is embeddedly connected with the bottom ring valve core 218, and the bottom ring valve core 218 is in communication with the bottom ring sealing air bag 217. The annular bottom groove 216 provides a containing space for the bottom ring sealing air bag 217, so that the bottom ring sealing air bag 217 can be completely contained in the groove when not inflated, avoiding unnecessary friction and wear between the bottom ring sealing air bag 217 and the ground when the equipment is placed or moved. When the bottom ring sealing air bag 217 is inflated, the sidewall of the annular bottom groove 216 can guide and constrain the inflation form of the bottom ring sealing air bag 217, ensuring that the bottom ring sealing air bag 217 mainly expands towards the ground, thereby forming a continuous, uniform and pressure-controllable annular sealing band, which can adaptively fill all gaps between the fixed bottom ring 212 and the uneven ground. The bottom ring valve core 218 provides a gas charging and discharging channel for the bottom ring sealing air bag 217. The user can adjust the internal pressure of the bottom ring sealing air bag 217 according to the softness and unevenness of the actual ground to achieve the best sealing effect.

[0048] As Figure 1 , Figure 3 , Figure 10 and Figure 11As shown, the top end of the outer cover 21 is connected with a threaded pipe 27, the bottom end of the threaded pipe 27 is connected with an inner concave tapered pipe 28, the monitoring assembly 3 further comprises a screwing seat 32 and a threaded seat 33 connected integrally, the rod body of the hollow boom 31 penetrates the screwing seat 32 and the threaded seat 33, the upper rubber sleeve of the clamping rubber sleeve 34 is embedded in the threaded seat 33, and when the threaded seat 33 is screwed with the threaded pipe 27, the lower rubber sleeve of the clamping rubber sleeve 34 is clamped in the inner concave tapered pipe 28, when the threaded seat 33 is screwed with the threaded pipe 27, the lower rubber sleeve of the clamping rubber sleeve 34 is forced to be pressed into the tapered space of the inner concave tapered pipe 28, the radial contraction force generated by the tapered structure forces the elastic clamping rubber sleeve 34 to tightly hold the rod body of the hollow boom 31, generating a large static friction force, thereby fixing the hollow boom 31 and the monitoring sensor group 310 at the end of the hollow boom 31 at a predetermined height, allowing the monitoring sensor group 310 to be adjusted steplessly in the vertical direction; the upper rubber sleeve of the clamping rubber sleeve 34 is embedded in the threaded seat 33, ensuring that the clamping rubber sleeve 34 itself will not fall off or shift when stressed, effectively transmitting the screwing force to the clamping part, effectively preventing the monitoring assembly 3 from loosening or sinking during long-term monitoring.

[0049] Further, the lower rubber sleeve of the clamping rubber sleeve 34 is provided with an opening groove 35 arranged symmetrically, which provides the necessary deformation space for the clamping rubber sleeve 34 when it is pressed in the radial direction, so that when the clamping rubber sleeve 34 is pressed into the inner concave tapered pipe 28, the lower part can more easily and uniformly produce inward contraction deformation, thereby forming a more intimate fit with the rod body of the hollow boom 31.

[0050] Further, a plurality of inclined support links 36 are connected between the hollow boom 31 and the air pipe 37, the bottom end of the air pipe 37 is connected with a wind collecting cover 39, a micro air suction fan 38 is installed at the connection part of the air pipe 37 and the wind collecting cover 39, the wind collecting cover 39 connected with the air pipe 37 is designed with an expanded mouth, effectively increasing the coverage area of gas collection and avoiding local gas concentration measurement deviation caused by too small sampling port or single position; the micro air suction fan 38 installed at the connection part of the air pipe 37 and the wind collecting cover 39 can generate stable airflow, actively conveying the mixed gas at the bottom of the cover body to the position where the monitoring sensor group 310 is located through the wind collecting cover 39 and the air pipe 37, so that the monitoring sensor group 310 detects the gas sample that has been fully mixed and can represent the average concentration in the cover.

[0051] Working principle: first, the cover body assembly 2 in the storage state is unfolded, the operator rotates the fixed insertion rod 213 connected with the fixed bottom ring 212 from the threaded groove 25 in the bottom of the docking table ring 23, and the relative sliding of the outer cover 21 and the inner cover 22 is used to make the docking lower ring 26 and the docking upper ring 211 align and clamp together, and then the cover body air valve core 210 embedded in the bottom end of the outer cover 21 is inflated to the cover body sealing air bag 29, so that it expands and tightly fills the inclined joint gap between the docking lower ring 26 and the docking upper ring 211, forming a reliable airtight seal.

[0052] The fixed bottom ring 212 fixedly connected to the bottom end of the inner cover 22 contacts the ground, the operator inserts the sharp end of the bottom rod 215 at the bottom end of the fixed insertion rod 213 into the ground to fix the equipment, and then inflates the bottom ring sealing air bag 217 through the bottom ring air valve core 218 embedded in the fixed bottom ring 212, so that it expands and protrudes from the annular bottom groove 216 in the bottom surface of the fixed bottom ring 212, and at the same time, the multiple elastic diaphragms 220 connected to the inner side plate of the annular hollow insertion plate 219 communicated with the bottom ring sealing air bag 217 also expand outward, the expansion of the elastic diaphragm 220 increases the contact area and frictional resistance with soil particles, and the horizontal fastening force effectively prevents the annular hollow insertion plate 219 from being lifted upward during monitoring. The flexible sealing belt formed after the bottom ring sealing air bag 217 is inflated can adapt to the uneven ground conditions, and together with the annular hollow insertion plate 219 forms a composite seal between the cover body and the ground.

[0053] When the monitoring starts, the operator screws the monitoring assembly 3 through the screwing seat 32 and the threaded seat 33 integrally connected with the threaded insertion pipe 27 at the top end of the outer cover 21, and as the threaded seat 33 is screwed with the threaded insertion pipe 27, the lower rubber sleeve of the clamping rubber sleeve 34 is pressed into the inner recessed conical surface pipe 28 connected to the bottom end of the threaded insertion pipe 27, and the symmetrical opening groove 35 formed in the lower rubber sleeve of the clamping rubber sleeve 34 makes it easier to produce uniform radial contraction, so as to tightly hold the hollow hanging rod 31 connected with the screwing seat 32 and the threaded seat 33, realize stepless adjustment and reliable fixation of the monitoring sensor group 310 in the vertical direction, and the storage battery 24 embedded in the docking table ring 23 supplies power to the monitoring sensor group 310 through the wire arranged in the hollow cavity of the hollow hanging rod 31.

[0054] During the monitoring process, the hollow boom 31 is located in the bottom end of the cover assembly 2, the air pipe 37 is connected with the air collecting cover 39, the micro air suction fan 38 is installed at the connecting part, and the gas in the cover body is actively sucked into the air pipe 37. The gas is transported to the monitoring sensor group 310 fixedly connected to the inner wall of the air pipe 37 for analysis. After the monitoring is completed, the gas in the cover body sealing air bag 29 and the bottom ring sealing air bag 217 is released in sequence, the threaded plug 214 at the top end of the fixed plug rod 213 is screwed back into the threaded groove 25 of the docking table ring 23, the cover assembly 2 is retracted, and the entire device is stored in the shell assembly 1. The upper shell 11 and the lower shell 13 are respectively inserted into the upper and lower docking table surfaces of the docking table ring 23, the outer sleeve 12 connected to the top end of the upper shell 11 is covered on the outside of the hollow boom 31 to provide protection for the hollow boom 31. Thus, a complete monitoring work cycle is completed.

[0055] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to encompass all changes falling within the meaning and range of equivalents of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

[0056] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A grass carbon sink metering monitoring device comprising a cover assembly (2) and a monitoring assembly (3), characterized in that: The cover body assembly (2) is covered on the lawn ground, the monitoring assembly (3) is arranged in the cover body assembly (2), the cover body of the cover body assembly (2) is telescopic, and the installation height of the monitoring assembly (3) in the cover body assembly (2) is adjustable. The cover body assembly (2) comprises an outer cover (21) and an inner cover (22) movably arranged, the bottom end inner wall of the outer cover (21) is fixedly connected with a butt joint lower ring (26), the upper end outer wall of the inner cover (22) is fixedly connected with a butt joint upper ring (211), the butt joint lower ring (26) and the butt joint upper ring (211) are clamped together in position when the cover body is unfolded, and the butt joint parts of the two are provided with a cover body sealing air bag (29). The bottom end outer wall of the inner cover (22) is fixedly connected with a fixed bottom ring (212), the bottom of the ring body of the fixed bottom ring (212) is connected with a bottom ring sealing air bag (217) and a ring-shaped hollow insertion plate (219) in communication, and the inner side plate body of the ring-shaped hollow insertion plate (219) is connected with a plurality of elastic diaphragms (220). The monitoring assembly (3) comprises a hollow boom (31) and a monitoring sensor group (310), the rod body of the hollow boom (31) is sleeved with a clamping rubber sleeve (34), the clamping rubber sleeve (34) is fixedly connected in a tightening state at the top middle part of the outer cover (21), the bottom end of the hollow boom (31) in the cover body assembly (2) is connected with a breather pipe (37), and the monitoring sensor group (310) is fixedly connected to the inner wall of the breather pipe (37).

2. The grassland carbon sink measurement monitoring device according to claim 1, characterized in that: The outer side of the cover body assembly (2) movably provided with a shell assembly (1), the shell assembly (1) comprises an upper shell (11) and a lower shell (13), the cover body of the outer cover (21) is fixedly connected with a butt joint table ring (23), the upper shell (11) and the lower shell (13) are respectively arranged in position on the upper and lower butt joint table surfaces of the butt joint table ring (23), the top middle part of the upper shell (11) is communicated with an outer sleeve (12), and the outer sleeve (12) is covered on the outer side of the hollow boom (31).

3. The grassland carbon sink measurement monitoring device according to claim 2, characterized by: The butt joint table ring (23) is embedded with a storage battery (24), wires are arranged in the hollow cavity of the hollow boom (31), and the storage battery (24) and the monitoring sensor group (310) are electrically connected through the wires.

4. The grassland carbon sink measurement monitoring apparatus according to claim 3, characterized by: A plurality of threaded grooves (25) are formed in the bottom ring body of the butt joint table ring (23), the ring body of the fixed bottom ring (212) is connected with a fixed insertion rod (213) in penetration, the fixed insertion rod (213) is arranged in one-to-one correspondence with the threaded grooves (25), the top end of each fixed insertion rod (213) is fixedly connected with a threaded plug (214), the bottom end of each fixed insertion rod (213) is fixedly connected with a pointed bottom rod (215), and the diameters of the threaded plug (214) and the pointed bottom rod (215) are greater than the diameter of the fixed insertion rod (213), and the threaded plug (214) is screwed in the threaded groove (25) when the cover body is contracted.

5. The grass carbon sink metering monitoring device according to claim 4, characterized in that: The opposite surface of the docking lower ring (26) and the docking upper ring (211) is beveled, part of the body of the cover body sealing air bag (29) is embedded in the docking lower ring (26), the bottom end of the cover (21) is embeddedly connected with a cover body valve core (210), and the cover body valve core (210) is communicated with the cover body sealing air bag (29).

6. The grass carbon sink metering monitoring device according to claim 5, characterized in that: The bottom surface of the fixed bottom ring (212) is provided with an annular bottom groove (216), the bottom ring sealing air bag (217) is fixedly connected in the annular bottom groove (216), the ring body of the fixed bottom ring (212) is embeddedly connected with a bottom ring valve core (218), and the bottom ring valve core (218) is communicated with the bottom ring sealing air bag (217).

7. The grassland carbon sink measurement monitoring apparatus according to claim 1, characterized by: The top end of the cover (21) is connected with a threaded insertion pipe (27) at the middle part, the bottom end of the threaded insertion pipe (27) is connected with an inner recessed conical pipe (28), the monitoring assembly (3) further comprises an integrally connected screwing seat (32) and a threaded seat (33), the rod body of the hollow suspender (31) penetrates the screwing seat (32) and the threaded seat (33), the upper rubber sleeve of the clamping rubber sleeve (34) is embedded in the threaded seat (33), and when the threaded seat (33) is screwed with the threaded insertion pipe (27), the lower rubber sleeve of the clamping rubber sleeve (34) is clamped in the inner recessed conical pipe (28).

8. The grass carbon sink metering monitoring device according to claim 7, characterized by: The lower rubber sleeve of the clamping rubber sleeve (34) is provided with an opening groove (35) arranged in a symmetrical manner.

9. The apparatus according to claim 1, wherein: A plurality of inclined support links (36) are connected between the hollow suspender (31) and the air pipe (37), the bottom end of the air pipe (37) is communicated with a wind collecting cover (39), and the connection part of the air pipe (37) and the wind collecting cover (39) is provided with a micro suction fan (38).

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