A device for sampling gasses in a goaf

Abstract

The utility model relates to gas sampling technical field especially relates to a device for goaf sealed gas sampling, the device for goaf sealed gas sampling, including, transport pipe, sampling pipe, transport pipe, transport pipe one end is provided with exhaust pipe, transport pipe other end is provided with connecting seat, connecting seat, the top fixedly connected with sampling pipe of connecting seat, sampling pipe can effectively intercept and remove dust, particulate matter and other impurities in gas, ensure that the gas purity of entering sampling container is high, avoid the interference of impurities to gas component analysis, make the test result more accurately reflect the real content and proportion of goaf gas, through sealing cover can tightly seal the container after sampling, prevent dust, coal dust and the like in outside air from mixing again, eliminate secondary pollution of gas sample in the storage and transportation process, guarantee gas sample quality stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of gas sampling technology, specifically a device for sampling gas in a goaf. Background Technology

[0002] During gas sampling in goaf areas, the complex and harsh working environment makes it easy for outside air to mix in. In the absence of effective gas filtration measures, dust, particulate matter, and other impurities adhering to the periphery of the goaf and within the sampling channel can enter the sampling container with the airflow. This not only interferes with the composition of the original gas in the goaf but may also clog the sampling pipeline or damage the sampling equipment, affecting the continuity and accuracy of sampling.

[0003] Furthermore, without dust protection measures, dust and coal dust from the outside air will freely mix into the gas sample during sampling, further exacerbating the pollution level. Gas samples obtained in this way will inevitably produce distorted data during testing, failing to accurately reflect the actual gas content within the goaf. This, in turn, will prevent the timely detection and accurate assessment of potential safety hazards within the goaf, seriously threatening the safe production of the mine.

[0004] Therefore, we propose a device for sampling sealed gases in goaf areas. Utility Model Content

[0005] The purpose of this invention is to provide a device for sampling sealed gases in goaf areas, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for sampling sealed gas in goaf areas, comprising: A transport pipe, wherein an exhaust pipe is installed at one end of the transport pipe and a connecting seat is installed at the other end of the transport pipe; A sampling tube is fixedly connected to the top of the connector, and a filter hole is provided at the top of the sampling tube.

[0007] Preferably, a rotating rod is rotatably installed inside the sampling tube, with both ends of the rod passing through the inner wall of the sampling tube. A partition is fixedly connected to the outer side of the center of the rotating rod, and handles are fixedly connected to both ends of the rotating rod. Anti-slip grooves are provided on the outer side of the handles. By rotating the handles at the ends of the rotating rods on both sides of the sampling tube, the partition at the center of the rotating rod rotates inside the sampling tube, thereby adjusting the size of the channel between the partition and the inner wall of the sampling tube, thus controlling the flow rate of gas entering the sampling tube and avoiding insufficient filtration of impurities or unstable gas sample collection due to excessive flow rate.

[0008] Preferably, a sealed box is installed inside the sampling tube, a storage box is installed inside the sealed box, and an absorbent sponge is installed inside the storage box. When gas enters the sealed box inside the sampling tube, the absorbent sponge in the storage box further processes the gas, absorbing moisture from the gas to prevent moisture from mixing with impurities and adhering to the inner wall of the sampling tube, thus avoiding interference with subsequent gas sample analysis or causing pipeline blockage.

[0009] Preferably, a sliding groove is formed on the outer side of the top end of the sampling tube, and a sliding block is slidably installed inside the sliding groove. A support plate is fixedly connected to the outer side of the sliding block, and a brush plate is fixedly connected to the bottom of the support plate, with the bottom end of the brush plate contacting the top surface of the sampling tube. A pull plate is fixedly connected to the outer side of the support plate. During sampling, if too many impurities adhere to the surface of the filter holes, causing poor gas flow, the operator can pull the pull plate on the outer side of the top end of the sampling tube, causing the sliding block fixedly connected to the support plate to slide in the sliding groove. This allows the brush plate at the bottom of the support plate to slide on the top surface of the sampling tube, cleaning the impurities on the surface of the filter holes and ensuring a continuous and stable flow of gas into the sampling tube.

[0010] Preferably, a connecting plate is fixedly connected to the outside of the sampling tube. The connecting plate has connecting ports arranged at equal intervals. An installation block is fixedly connected to the outside of the sampling tube, and a connecting rope is fixedly connected to the outside of the installation block. A sealing cap is installed at the other end of the connecting rope, and insert plates are fixedly connected at equal intervals to the outside of the sealing cap. When the sealing cap, connected to the installation block via the connecting rope, is placed on top of the sampling tube, the insert plates on the outside of the sealing cap correspond to the connecting ports on the connecting plate. Inserting the insert plates into the connecting ports achieves a tight fixation between the sealing cap and the sampling tube, effectively isolating it from outside air and preventing dust, coal dust, and other impurities from the outside air from mixing into the collected gas sample.

[0011] Preferably, the shape and size of the insert plate are similar to the shape and size of the connection port.

[0012] Compared with the prior art, the beneficial effects of this utility model are: Ensuring gas sample purity and improving analytical accuracy: The device utilizes a multi-layered structure to safeguard gas sample purity throughout the entire process, from source to storage. The filter at the top of the sampling tube initially intercepts larger dust particles and other impurities in the gas, preventing them from entering subsequent sampling stages. The absorbent sponge in the storage box within the sealed container further absorbs moisture from the gas, preventing moisture from mixing with residual impurities and affecting the gas sample composition. This eliminates the problem of impurities clogging the pipeline or interfering with gas composition analysis. Simultaneously, after sampling, the sealing cap precisely engages with the connection port on the connecting plate to achieve a tight seal of the sampling tube, completely isolating it from outside air and preventing the introduction of external dust and coal dust during storage and transportation, thus avoiding secondary contamination of the gas sample. This series of designs ensures that the gas sample entering the sampling container accurately reflects the original content and proportion of gas in the goaf, providing accurate samples for subsequent testing and analysis, making the analytical results more valuable, and helping staff accurately determine the gas conditions in the goaf.

[0013] Optimizing the sampling process and enhancing operational convenience and stability: The device's structural design fully considers practical operational needs, improving the convenience and stability of the sampling process. The combination of the rotating rod and baffle allows for flexible adjustment of the gas flow rate into the sampling tube. Operators can control this by rotating the handle with anti-slip grooves. The anti-slip grooves increase hand friction, preventing slippage during rotation and easily achieving flow rate control, preventing insufficient filtration or unstable sampling due to excessive flow rate. Furthermore, when impurities accumulate in the filter holes, affecting gas flow, operators only need to pull the pull plate to activate the brush plate to clean the filter hole surface without disassembling the sampling tube. This simplifies the cleaning process, saves operating time, ensures a continuous and stable flow of gas into the sampling tube, and guarantees efficient and orderly sampling, reducing the risk of sampling interruptions due to equipment failure or operational complexity. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is one of the schematic diagrams of the sampling tube structure of this utility model; Figure 3 This is the second schematic diagram of the sampling tube structure of this utility model.

[0015] In the diagram: 1. Transport pipe; 2. Exhaust pipe; 3. Connecting seat; 4. Sampling pipe; 5. Rotating rod; 6. Partition plate; 7. Rotating handle; 8. Anti-slip groove; 9. Sealing box; 10. Storage box; 11. Filter hole; 12. Sliding groove; 13. Sliding block; 14. Support plate; 15. Brush plate; 16. Pull plate; 17. Connecting plate; 18. Connecting port; 19. Mounting block; 20. Connecting rope; 21. Sealing cover; 22. Insert plate. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-3 A device for sampling confined gases in goaf areas, comprising: Transport pipe 1, one end of which is equipped with an exhaust pipe 2, and the other end of which is equipped with a connecting seat 3; Sampling tube 4 is fixedly connected to the top of the connecting seat 3, and a filter hole 11 is opened at the top of the sampling tube 4.

[0018] Please see Figure 1-3 The sampling tube 4 has a rotating rod 5 rotatably mounted inside. Both ends of the rotating rod 5 pass through the inner wall of the sampling tube 4. A partition 6 is fixedly connected to the outer side of the center of the rotating rod 5. A handle 7 is fixedly connected to both ends of the rotating rod 5, and an anti-slip groove 8 is provided on the outer side of the handle 7. By rotating the handle 7 at the ends of the rotating rod 5 on both sides of the sampling tube 4, the partition 6 at the center of the rotating rod 5 is driven to rotate inside the sampling tube 4. This adjusts the size of the channel between the partition 6 and the inner wall of the sampling tube 4, thereby controlling the flow rate of gas entering the sampling tube 4 and avoiding insufficient filtration of impurities or unstable gas sample collection due to excessive flow rate.

[0019] Please see Figure 1-3 The sampling tube 4 has a sealed box 9 installed inside, and a storage box 10 is installed inside the sealed box 9. An absorbent sponge is installed inside the storage box 10. When gas enters the sealed box 9 inside the sampling tube 4, the absorbent sponge in the storage box 10 further processes the gas, absorbing moisture to prevent moisture from mixing with impurities and adhering to the inner wall of the sampling tube 4, thus avoiding interference with subsequent gas sample analysis or causing pipeline blockage.

[0020] Please see Figure 1-3The sampling tube 4 has a sliding groove 12 on its outer side at the top end. A sliding block 13 is slidably installed inside the sliding groove 12. A support plate 14 is fixedly connected to the outer side of the sliding block 13. A brush plate 15 is fixedly connected to the bottom of the support plate 14, and the bottom end of the brush plate 15 contacts the top surface of the sampling tube 4. A pull plate 16 is fixedly connected to the outer side of the support plate 14. During the sampling process, if too many impurities adhere to the surface of the filter hole 11, causing poor gas flow, the operator can pull the pull plate 16 on the support plate 14 at the top end of the sampling tube 4, causing the sliding block 13 fixedly connected to the support plate 14 to slide in the sliding groove 12. This allows the brush plate 15 at the bottom of the support plate 14 to slide on the top surface of the sampling tube 4, cleaning the impurities on the surface of the filter hole 11 and ensuring a continuous and stable flow of gas into the sampling tube 4.

[0021] Please see Figure 1-3 A connecting plate 17 is fixedly connected to the outside of the sampling tube 4. Connecting ports 18 are equidistantly arranged inside the connecting plate 17. An installation block 19 is fixedly connected to the outside of the sampling tube 4. A connecting rope 20 is fixedly connected to the outside of the installation block 19. A sealing cap 21 is installed at the other end of the connecting rope 20. Insert plates 22 are equidistantly fixed to the outside of the sealing cap 21. When the sealing cap 21, connected to the installation block 19 via the connecting rope 20, is placed over the top of the sampling tube 4, the insert plates 22 on the outside of the sealing cap 21 correspond to the connecting ports 18 on the connecting plate 17. Inserting the insert plates 22 into the connecting ports 18 achieves a tight fixation between the sealing cap 21 and the sampling tube 4, effectively isolating external air and preventing dust, coal dust, and other impurities from the outside air from mixing into the collected gas sample.

[0022] Please see Figure 1-3 The shape and size of the insert plate 22 are similar to those of the connector 18.

[0023] Working Principle: This device for sampling gas in goaf areas first establishes a gas transmission channel between the goaf's sealed space and the sampling components using a transport pipe 1. The exhaust pipe 2 at one end of the transport pipe 1 is used to expel residual outside air in the initial sampling stage, ensuring that the gas entering the sampling system is the target gas from the goaf. The connecting seat 3 at the other end provides a stable connection between the transport pipe 1 and the sampling pipe 4, preventing gas leakage due to loose connections during transmission. Before sampling begins, the operator can rotate the handle 7 at the ends of the rotating rods 5 on both sides of the sampling pipe 4. The anti-slip groove 8 on the outside of the handle 7 increases hand friction, preventing slippage during rotation. This causes the baffle 6 at the center of the rotating rod 5 to rotate inside the sampling pipe 4, thereby adjusting the channel size between the baffle 6 and the inner wall of the sampling pipe 4. This controls the gas flow rate into the sampling pipe 4, preventing insufficient filtration of impurities or unstable gas sample collection due to excessive flow rate. When the gas from the goaf is transported to the sampling tube 4 through the transport pipe 1, it first undergoes preliminary filtration through the filter hole 11 at the top of the sampling tube 4 to intercept larger dust particles and other impurities. Subsequently, the gas enters the sealed box 9 inside the sampling tube 4. The absorbent sponge placed in the storage box 10 inside the sealed box 9 further processes the gas, absorbing moisture to prevent it from mixing with impurities and adhering to the inner wall of the sampling tube 4, thus affecting subsequent gas sample analysis or causing pipeline blockage. During sampling, if too many impurities adhere to the surface of the filter hole 11, causing poor gas flow, the operator can pull the pull plate 16 on the outer support plate 14 at the top of the sampling tube 4. This causes the sliding block 13, which is fixedly connected to the support plate 14, to slide within the sliding groove 12, thereby allowing the brush plate 15 at the bottom of the support plate 14 to slide on the top surface of the sampling tube 4, cleaning the impurities on the surface of the filter hole 11 and ensuring a continuous and stable flow of gas into the sampling tube 4. After sampling, the operator needs to place the sealing cover 21, which is connected to the installation block 19 by the connecting rope 20, on the top of the sampling tube 4. At this time, the insert plate 22 on the outside of the sealing cover 21 corresponds to the connection port 18 on the connecting plate 17. Inserting the insert plate 22 into the connection port 18 can achieve a tight fixation between the sealing cover 21 and the sampling tube 4, effectively isolating the outside air and preventing dust, coal dust and other impurities in the outside air from mixing into the collected gas sample. This avoids secondary pollution of the gas sample during storage and transportation, ensures the stability of the gas sample quality, and provides a reliable sample basis for subsequent accurate analysis of the gas composition in the goaf and judgment of safety hazards.

[0024] 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.

[0025] 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 device for sampling confined gases in goaf areas, characterized in that, include: Transport pipe (1), one end of which is equipped with an exhaust pipe (2), and the other end of which is equipped with a connecting seat (3); The sampling tube (4) is fixedly connected to the top of the connecting seat (3), and a filter hole (11) is opened at the top of the sampling tube (4).

2. The device for sampling sealed gas in goaf areas according to claim 1, characterized in that: The sampling tube (4) is rotatably installed with a rotating rod (5). The two ends of the rotating rod (5) pass through the inner wall of the sampling tube (4). A partition (6) is fixedly connected to the outer side of the center of the rotating rod (5). A handle (7) is fixedly connected to both ends of the rotating rod (5). An anti-slip groove (8) is provided on the outer side of the handle (7).

3. The device for sampling sealed gas in goaf areas according to claim 1, characterized in that: The sampling tube (4) is equipped with a sealed box (9), the sealed box (9) is equipped with a storage box (10), and the storage box (10) is equipped with an absorbent sponge.

4. The device for sampling sealed gas in goaf areas according to claim 1, characterized in that: The sampling tube (4) has a sliding groove (12) on the outer side of its top end. A sliding block (13) is slidably installed inside the sliding groove (12). A support plate (14) is fixedly connected to the outer side of the sliding block (13). A brush plate (15) is fixedly connected to the bottom of the support plate (14), and the bottom end of the brush plate (15) is in contact with the top surface of the sampling tube (4). A pull plate (16) is fixedly connected to the outer side of the support plate (14).

5. The device for sampling sealed gas in goaf areas according to claim 1, characterized in that: A connecting plate (17) is fixedly connected to the outside of the sampling tube (4). A connecting port (18) is opened at equal intervals inside the connecting plate (17). An installation block (19) is fixedly connected to the outside of the sampling tube (4). A connecting rope (20) is fixedly connected to the outside of the installation block (19). A sealing cap (21) is installed at the other end of the connecting rope (20). Insert plates (22) are fixedly connected at equal intervals to the outside of the sealing cap (21).

6. The device for sampling sealed gas in goaf areas according to claim 5, characterized in that: The shape and size of the insert (22) are similar to those of the connector (18).

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