A kind of suspension pipe device for collecting greenhouse gas emission of forest plant branches and leaves

Abstract

The utility model discloses a kind of forest plant branch and leaf greenhouse gas emission collection's suspension pipe device, it is related to greenhouse gas emission collection technical field, and the utility model includes lower container, the upper portion of lower container is equipped with collection mechanism, for the collection of carbon dioxide, methane and nitrous oxide and other greenhouse gases emitted by plant branch and leaf, collection mechanism includes: suspension pipe subassembly includes lower fixed ring fixedly installed at lower container top end, the closed gas chamber formed by upper and lower container is placed in by branch in the application, and utilize annular sealing filling strip and be extruded deformation when upper and lower fixed ring buckle, the joint surface gap is effectively sealed, simultaneously utilize silica gel sealing ring tightly and stick to different diameter branch, dynamically fill the small gap between branch and passage, so that gas chamber can keep highly closed state for a long time, effectively prevent internal greenhouse gas and outside atmosphere abnormal exchange, greatly reduce the interference of gas leakage to measurement result.

Description

Technical Field

[0001] This utility model relates to the field of greenhouse gas emission collection technology, specifically a suspended pipe device for collecting greenhouse gas emissions from forest plant branches and leaves. Background Technology

[0002] Greenhouse gases refer to gases in the atmosphere that absorb long-wave radiation reflected from the ground and then re-emit radiation, such as water vapor, carbon dioxide, and most refrigerants. Their effect is to make the Earth's surface warmer, similar to how a greenhouse traps solar radiation and heats the air inside. This effect of greenhouse gases making the Earth warmer is called the "greenhouse effect." Water vapor (H2O), carbon dioxide (CO2), nitrous oxide (N2O), Freon, and methane (CH4) are the main greenhouse gases in the Earth's atmosphere.

[0003] Currently, greenhouse gas collection from plant branches and leaves mainly relies on the static chamber method. However, traditional static chambers are mostly formed into enclosed spaces through simple splicing or bolt fixing. Gaps can easily appear at the joint surfaces of the chambers due to processing errors or improper assembly. At the same time, there is a lack of adaptable sealing structures at the penetration points between the chamber and the plant branches, making it difficult to fill the gaps between branches of different diameters and the channels. This leads to the easy mixing of outside air into the chamber and the easy escape of the target gas inside the chamber, especially under the influence of wind in the field, which affects the reliability of the data. In addition, existing devices mostly use bolt connections to assemble and fix the chambers. Each installation or disassembly requires tightening multiple bolts one by one, making the installation cumbersome, complicated, time-consuming and labor-intensive.

[0004] Therefore, this utility model provides a suspended pipe device for collecting greenhouse gas emissions from forest plant branches and leaves. Utility Model Content

[0005] To address the problems of gas leakage caused by poor sealing at the joint surfaces of the casing and the penetration points of branches in current greenhouse gas collection devices for plant branches and leaves, as well as the cumbersome and inefficient installation and disassembly due to the use of bolted connections, the purpose of this utility model is to provide a suspended pipe device for collecting greenhouse gas emissions from forest plant branches and leaves.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a suspended pipe device for collecting greenhouse gas emissions from forest plant branches and leaves, comprising a lower container, the upper part of which is provided with a collection mechanism for collecting greenhouse gases such as carbon dioxide, methane, and nitrous oxide emitted from plant branches and leaves. The collection mechanism includes: The suspension pipe assembly includes a lower fixing ring fixedly installed at the top of the lower container. The lower fixing ring has an installation groove at the top. An upper fixing ring is slidably engaged in the middle of the installation groove. An upper container is fixedly installed at the top of the upper fixing ring. A semi-circular groove is opened in the middle of one side of the upper container and the lower container for mutual cooperation. A tee pipe is fixedly installed on one side of the upper container. A sealing filler strip is fixedly installed in the middle of the bottom end of the upper fixing ring. The bottom end of the sealing filler strip is in contact with the top end of the lower fixing ring. The quick-assembly assembly is located on the upper part of the lower fixing ring and is used for the rapid splicing of the upper and lower containers.

[0007] Preferably, the quick-release assembly includes two locking blocks that are slidably locked onto the upper part of the lower fixing ring. Limiting springs are fixedly installed on both sides of the two locking blocks. The other ends of the four limiting springs are fixedly installed on one side of the lower fixing ring. A handle is fixedly installed on one side of the top of each of the four locking blocks.

[0008] Preferably, sealing rings are fixedly installed on the inner walls of both semicircular grooves, and both sealing rings are in contact with the surface of the branch.

[0009] Preferably, the upper fixing ring has slots on both sides of the middle, and one side of each of the two locking blocks is slidably locked in the middle of the slot.

[0010] Preferably, two limiting rods are fixedly installed on the middle of both sides of the lower fixing ring, and the two locking blocks are slidably locked on the middle of the limiting rods on both sides.

[0011] Preferably, the lower fixing ring has fixing grooves at all four corners, and the fixing grooves cooperate with the suspension ropes to fix the entire collection mechanism.

[0012] Beneficial effects This invention provides a suspended pipe device for collecting greenhouse gas emissions from forest plant branches and leaves. Compared with the prior art, it has the following advantages: 1. This application places branches in a sealed air chamber formed by the interlocking of upper and lower containers, and utilizes an annular sealing filling strip that is compressed and deformed when the upper and lower fixing rings are interlocked to effectively seal the gaps at the joint surface. At the same time, a silicone sealing ring tightly wraps around and fits branches of different diameters, dynamically filling the small gaps between the branches and the channel. This allows the air chamber to maintain a highly sealed state for a long time, effectively preventing abnormal exchange between the internal greenhouse gases and the outside atmosphere, greatly reducing the interference of gas leakage on the measurement results, and thus ensuring the authenticity of gas samples and the accuracy of data collected in complex field environments.

[0013] 2. With this application, the operator only needs to align the upper container with the lower container and press down. The upper fixing ring will automatically squeeze and guide the locking block to retract inward by the guide slope of the upper part of the locking block and the lower part of the locking groove. It will overcome the elastic force of the limit spring and slide into the installation groove. Under the action of the spring rebound force, the locking block will automatically lock into the locking groove to complete the locking. When disassembling, it is only necessary to pull the handle outward to separate, thus eliminating the tedious steps of tightening bolts and other steps, and significantly improving the efficiency of field work. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the upper and lower containers after they have been separated in this utility model.

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the lower fixing ring of this utility model.

[0017] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.

[0018] Figure 5 This is a schematic diagram of the upper container structure of this utility model.

[0019] In the diagram: 1. Lower container; 2. Collection mechanism; 21. Suspension tube assembly; 211. Upper container; 212. Upper fixing ring; 2121. Mounting groove; 213. Semicircular groove; 214. Lower fixing ring; 215. Sealing ring; 216. Fixing groove; 217. Sealing filler strip; 218. T-pipe; 22. Quick-release assembly; 221. Handle; 222. Locking block; 2221. Locking groove; 223. Limiting rod; 224. Limiting spring. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-5This utility model provides a technical solution: a suspended pipe device for collecting greenhouse gas emissions from forest plant branches and leaves, including a lower container 1. The lower container 1 is made of high-strength transparent polycarbonate material, and has an overall open-top rectangular structure, with a length of 300mm, a width of 150mm, and a height of 150mm. Its sidewall thickness is 5mm, providing good impact resistance and light transmittance, and can be adapted to long-term use in complex forest environments while ensuring that the light conditions required by the plant branches and leaves are not affected. The upper part of the lower container 1 is equipped with a collection mechanism 2 for collecting greenhouse gases such as carbon dioxide, methane, and nitrous oxide emitted by the plant branches and leaves. The collection mechanism 2 includes: The suspension tube assembly 21 includes a lower fixing ring 214 fixedly installed at the top of the lower container 1. The upper part of the lower fixing ring 214 has an installation groove 2121. An upper fixing ring 212 is slidably engaged in the middle of the installation groove 2121. An upper container 211 is fixedly installed at the top of the upper fixing ring 212. The upper container 211 and the lower container 1 are made of the same material and have the same dimensions. When they are fastened together, they form a completely sealed air chamber. Semicircular grooves 213 are formed on the middle of one side of both the upper container 211 and the lower container 1, and both semicircular grooves 213 have a radius of 5mm. When fastened together, they form a circular branch channel with a diameter of 10mm, which can accommodate plant branches with a diameter of 3-8mm. A three-way pipe 218 is fixedly installed on one side of the upper part of the upper container 211. The three-way pipe 218 is made of polytetrafluoroethylene (PTFE), which is chemically resistant and has good sealing properties. One end connects to the mounting hole (1.5mm radius) on the side wall of the upper container 211 via a threaded interface and extends into the gas chamber. The other end can be connected to a syringe or a gas sampling bag. The third end is equipped with a shut-off valve. By switching the valve state, quantitative gas collection and gas chamber sealing can be achieved. A sealing filler strip 217 is fixedly installed in the middle of the bottom end of the upper fixing ring 212. The bottom end of the sealing filler strip 217 contacts the top end of the lower fixing ring 214. The sealing filler strip 217 is a ring structure, made of nitrile rubber, with a thickness of 3mm, and is completely fitted to the top surface of the lower fixing ring 214. When the upper fixing ring 212 and the lower fixing ring 214 are fastened, the sealing filler strip 217 is squeezed and deformed, which can effectively seal the gap between the upper fixing ring 212 and the lower fixing ring 214, further improving the overall sealing performance of the gas chamber. The quick-assembly component 22 is located on the upper part of the lower fixing ring 214 and is used for quick splicing of the upper container 211 and the lower container 1.

[0022] The quick-installation assembly 22 includes two locking blocks 222 that are slidably locked onto the upper part of the lower fixing ring 214. The locking blocks 222 are made of stainless steel and have guide grooves on their upper parts. When the upper fixing ring 212 is inserted into the mounting groove 2121, the two locking blocks 222 can be squeezed to move into the lower fixing ring 214, so that the upper fixing ring 212 can be smoothly installed into the mounting groove 2121. After being fully inserted, the locking blocks 222 can be locked into the slot 2221 under the action of the limiting springs 224, so that the upper container 211 and the lower container 1 are connected and locked together. Limiting springs 224 are fixedly installed on both sides of the two locking blocks 222. The other end of the four limiting springs 224 is fixedly installed on one side of the lower fixing ring 214. A handle 221 is fixedly installed on one side of the top of each of the four locking blocks 222.

[0023] The inner walls of the two semi-circular grooves 213 are fixedly installed with sealing rings 215. Both sealing rings 215 are in contact with the surface of the branches. The sealing rings 215 are made of food-grade silicone and have a "U" shaped cross-section. Their inner sidewalls are provided with anti-slip textures. After installation, they fit tightly against the surface of the branches, effectively filling the gap between the branches and the channel and preventing gas leakage.

[0024] The upper fixing ring 212 has slots 2221 on both sides of the middle. One side of each of the two locking blocks 222 is slidably locked in the middle of the slots 2221. The lower side of the slots 2221 also has an inclined groove that works in conjunction with the guide groove, so that the upper fixing ring 212 can quickly and smoothly enter the mounting groove 2121.

[0025] Two limiting rods 223 are fixedly installed on the middle of both sides of the lower fixing ring 214. The two locking blocks 222 are slidably locked in the middle of the limiting rods 223 on both sides. The limiting rods 223 are cylindrical stainless steel rods with a diameter of 4mm and a length of 30mm. The two locking blocks 222 have sliding holes on both sides that are adapted to the limiting rods 223. The sliding holes are slidably locked in the middle of the limiting rods 223. The limiting rods 223 limit the sliding trajectory of the locking blocks 222, ensuring that the locking blocks 222 are accurately locked into the slots 2221.

[0026] Fixing grooves 216 are provided at the four corners of the lower fixing ring 214. The fixing grooves 216 work together with the suspension ropes to fix the entire collection mechanism 2. Nylon suspension ropes or fixing brackets can be inserted into the fixing grooves 216. By binding the suspension ropes to the tree trunk or brackets, the entire collection mechanism 2 can be stably fixed, avoiding shaking or tilting of the device due to external forces such as wind, and ensuring the stability of the sampling process.

[0027] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0028] During operation, the plant branch to be tested is carefully placed into the semi-circular groove 213 of the lower container 1. Then, the upper container 211 and its integrated upper fixing ring 212 are aligned with the lower fixing ring 214 on the lower container 1. Since the upper part of the locking block 222 and the lower part of the locking groove 2221 are both provided with guide slopes, when the upper container 211 is pressed down, the upper fixing ring 212 will squeeze the locking block 222, so that it overcomes the elastic force of the limiting spring 224 and retracts inward, thus smoothly sliding into the mounting groove 2121 of the lower fixing ring 214. When the upper fixing ring 212 is fully in place, the locking block 222 extends outward under the action of the rebound force of the limiting spring 224 and locks into the locking grooves 2221 on both sides of the upper fixing ring 212, thereby locking the upper container 211 and the lower container 1 together quickly and firmly. When plant branches and leaves carry out physiological activities under natural light conditions, they release or absorb greenhouse gases into the air chamber. These gases accumulate in the sealed air chamber for a period of time. When collecting the gas, a syringe or gas sampling bag is connected to the interface of the three-way tube 218. The valve on the three-way tube 218 is operated to open the passage connecting to the air chamber, while keeping other passages closed. The gas sample in the air chamber can then be quantitatively collected by aspirating with the syringe or by using the pressure difference between the inside and outside of the sampling bag. After collection, the valve is closed to restore the air chamber to a sealed state for the next accumulation and collection.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A suspended pipe device for collecting greenhouse gas emissions from forest plant branches and leaves, comprising a lower container (1), characterized in that: The upper part of the lower container (1) is provided with a collection mechanism (2) for collecting carbon dioxide, methane and nitrous oxide greenhouse gases emitted by plant branches and leaves. The collection mechanism (2) includes: The suspension pipe assembly (21) includes a lower fixing ring (214) fixedly installed at the top of the lower container (1). The upper part of the lower fixing ring (214) has an installation groove (2121). The middle part of the installation groove (2121) is slidably fitted with an upper fixing ring (212). The top of the upper fixing ring (212) is fixedly installed with an upper container (211). The middle part of one side of the upper container (211) and the lower container (1) has a semi-circular groove (213) that cooperates with each other. The upper side of the upper container (211) is fixedly installed with a three-way pipe (218). The middle part of the bottom end of the upper fixing ring (212) is fixedly installed with a sealing filler strip (217). The bottom end of the sealing filler strip (217) is in contact with the top end of the lower fixing ring (214). The quick-assembly assembly (22) is located on the upper part of the lower fixing ring (214) and is used for quick splicing of the upper container (211) and the lower container (1).

2. The suspended pipe device for collecting greenhouse gas emissions from forest plant branches and leaves according to claim 1, characterized in that: The quick-release assembly (22) includes two locking blocks (222) that are slidably locked on the upper part of the lower fixing ring (214). Limiting springs (224) are fixedly installed on both sides of the two locking blocks (222). The other ends of the four limiting springs (224) are fixedly installed on one side of the lower fixing ring (214). A handle (221) is fixedly installed on one side of the top of each of the four locking blocks (222).

3. The suspended pipe device for collecting greenhouse gas emissions from forest plant branches and leaves according to claim 1, characterized in that: The inner walls of the two semicircular grooves (213) are fixedly fitted with sealing rings (215), and the two sealing rings (215) are in contact with the surface of the branch.

4. The suspended pipe device for collecting greenhouse gas emissions from forest plant branches and leaves according to claim 2, characterized in that: The upper fixing ring (212) has slots (2221) in the middle of both sides, and one side of each of the two locking blocks (222) is slidably locked in the middle of the slots (2221).

5. The suspended pipe device for collecting greenhouse gas emissions from forest plant branches and leaves according to claim 2, characterized in that: Two limiting rods (223) are fixedly installed on the middle of both sides of the lower fixing ring (214), and the two locking blocks (222) are slidably locked on the middle of the limiting rods (223) on both sides.

6. The suspended pipe device for collecting greenhouse gas emissions from forest plant branches and leaves according to claim 1, characterized in that: The lower fixing ring (214) has fixing grooves (216) at each of its four corners. The fixing grooves (216) work together with the suspension rope to fix the entire collection mechanism (2).

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