Methane measuring device for mining extraction pipeline

Abstract

The invention belongs to the technical field of coal mine drainage pipeline parameter measuring devices, and relates to a mining drainage pipeline methane measuring device which comprises a sampling shaft, a data processing module, a methane sensor and an air cylinder. An air taking nozzle is arranged on the air cylinder, and the sampling shaft is arranged in the air cylinder in a sealing and sliding manner along the axial direction, so that the axial movement of the sampling shaft is matched with the air taking nozzle to extract and exhaust air; the data processing module is installed and fixed in the sampling shaft, and the methane sensor is fixedly installed at the bottom of the sampling shaft to collect methane concentration data of gas in the gas cylinder and is electrically connected with the data processing module to transmit the methane concentration data to the data processing module. According to the invention, a pipeline sampler and a methane concentration determinator are creatively combined into a whole, a light and convenient methane determination device is manufactured, and the problem that traditional equipment is inconvenient to use in a complex environment of a coal mine is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine extraction pipeline parameter measuring devices, and in particular relates to a methane measuring device for a mine extraction pipeline. Background Art

[0002] As an important energy resource in my country, coal plays an important role in supporting industrial production and the national economy. However, safety issues in coal mining, especially the presence of methane gas, have always been like a sword of Damocles hanging over our heads, posing a major threat to safe production. Methane, a flammable and explosive gas, is like a bomb that may explode at any time once its concentration in the coal mine extraction pipeline reaches a dangerous range. When exposed to open flames or high temperatures, it will instantly release huge energy and cause an explosion, which will not only seriously threaten the lives of miners, but also cause immeasurable property losses and environmental damage. Therefore, accurate and real-time measurement of the methane content in the extraction pipeline is of great significance to ensuring safe production in coal mines, improving the efficiency of gas extraction and utilization, and reducing environmental pollution.

[0003] At present, the determination of methane in coal mine extraction pipelines mainly relies on optical watt detectors. However, optical watt detectors have exposed many shortcomings in practical applications. Its reading error is large, and it is difficult to ensure the accuracy of the measurement results; the detection range is limited, and it cannot meet the measurement needs of methane of different concentrations; at the same time, it is greatly affected by the environment, and it is prone to unstable performance in harsh underground environments. In addition, the operation process of the optical watt detector is relatively complicated, requiring operators to have high professional skills; its portability is poor and its weight is heavy, which makes it quite inconvenient for underground workers to carry and operate. These defects not only affect the accuracy and efficiency of methane determination, but also restrict the improvement of coal mine safety production level to a certain extent. With the growing demand for coal mine safety production today, we urgently need a more advanced and reliable methane determination technology and device to solve this problem.

[0004] In summary, the existing coal mine extraction pipeline methane measurement technology has deficiencies in many aspects and can no longer meet the growing demand for coal mine safety production. Therefore, it is particularly important and urgent to develop an innovative methane measurement technology and device. This is also the opportunity and direction for the development of this application. We will be committed to creating a more advanced and reliable methane measurement device to protect coal mine safety production. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a methane measuring device for coal mine extraction pipelines, which can realize methane measurement in coal mine extraction pipelines to solve the problems existing in the background technology.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A methane measuring device for mining extraction pipeline, comprising a sampling shaft, a data processing module, a methane sensor and a gas cylinder;

[0008] The gas cylinder is provided with a gas extraction nozzle, and the sampling shaft is axially sealed and slidably installed in the gas cylinder, so that the sampling shaft can move axially to cooperate with the gas extraction nozzle to extract and exhaust gas;

[0009] The data processing module is installed and fixed inside the sampling shaft, and the methane sensor is fixedly installed at the bottom of the sampling shaft to collect methane concentration data of the gas in the gas cylinder and is electrically connected to the data processing module to transmit the methane concentration data to the data processing module.

[0010] Furthermore, a battery for providing power to the methane sensor and the data processing module is also provided in the sampling shaft.

[0011] Furthermore, a display screen is provided on the upper surface of the sampling axis and is electrically connected to the data processing module.

[0012] Furthermore, a sealing ring installed on the outside of the sampling shaft is provided between the sampling shaft and the gas cylinder to achieve a sealed sliding connection between the sampling shaft and the gas cylinder.

[0013] Furthermore, a groove for installing a sealing ring is provided on the outer side of the sampling shaft.

[0014] Furthermore, a limiting ring is provided on the top of the gas cylinder to limit the axial movement distance of the sampling shaft to prevent it from falling off.

[0015] Furthermore, the methane sensor is a laser methane sensor, and a sampling end of the laser methane sensor is exposed in the gas cylinder.

[0016] Furthermore, the data processing module has data transmission function and data storage function, which is used for data preservation and external transmission and uploading to the ring network.

[0017] Furthermore, the gas cylinder and the sampling shaft are made of stainless steel or flame-retardant antistatic transparent plastic material, and the inner walls are smooth.

[0018] Furthermore, the gas extraction nozzle is located below the gas cylinder and is provided with a latex tube so as to extend to different positions of the extraction pipeline for sampling.

[0019] The beneficial effects of the present invention are:

[0020] The present invention provides a mining extraction pipeline methane measuring device, which innovatively combines the pipeline sampler and the methane concentration meter into one by integrating components such as a display screen, a sampling shaft, a data processing module, a battery, a methane sensor, a sealing ring, a gas cylinder, a gas nozzle and a limit ring, to create a lightweight and convenient methane measuring device. Compared with the bulkiness and inconvenience of traditional optical tile detectors, this device has a compact structure and greatly reduced weight, making it convenient for underground workers to carry with them. This design not only improves the portability of the device, but also optimizes the on-site operation efficiency, solves the problem of the inconvenience of using traditional equipment in the complex environment of coal mines, and fully reflects the practicality and innovation of the technical solution.

[0021] This device significantly improves the user experience through simplified operating procedures and advanced digital design. Operators only need to pull the sampling shaft to extract gas and push the exhaust gas, and with the direct digital display, they can quickly complete the methane concentration measurement without complicated training. Compared with the traditional optical tile detector that relies on manual readings and is prone to errors, this device presents accurate data in real time through a digital display, effectively avoiding human misjudgment and ensuring the reliability of the measurement results. This innovation not only lowers the operating threshold, but also improves the accuracy of measurement, providing more efficient and reliable technical support for safe production in coal mines.

[0022] The device has a simple structural design and is extremely convenient to maintain. When the device is clogged due to water ingress or coal ash, it can be cleaned by simply removing the limit ring and pulling out the sampling shaft, which prevents the methane sensor from being damaged due to long-term immersion and extends the life of the equipment. At the same time, the built-in data processing module gives the device data storage and interconnection functions, and the measurement data can be directly uploaded to the ring network monitoring system to achieve real-time monitoring and intelligent management. This function not only improves the efficiency of data management, but also provides strong data support for safe production. Compared with traditional equipment, the breakthroughs in maintenance convenience and intelligent management of this device fully demonstrate its practicality and foresight.

[0023] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0025] Figure 1 This is a schematic diagram of the structure of a methane measuring device for mining extraction pipelines in an embodiment;

[0026] Figure 2 It is a schematic diagram of the application of a methane measuring device for mining extraction pipeline in an embodiment.

[0027] Figure numerals: 1-display screen; 2-sampling axis; 3-data processing module; 4-battery; 5-methane sensor; 6-sealing ring; 7-gas cylinder; 8-gas nozzle; 9-limiting ring. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0029] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] Example 1

[0032] See also Figure 1-2 , is a methane measuring device for mining extraction pipeline, comprising a sampling shaft 2, a data processing module 3, a methane sensor 5 and a gas cylinder 7;

[0033] The gas cylinder is provided with a gas extraction nozzle 8, and the sampling shaft 2 is axially sealed and slidably installed in the gas cylinder 7, so that the sampling shaft 2 can move axially to cooperate with the gas extraction nozzle 8 to extract and exhaust gas;

[0034] The data processing module 3 is installed and fixed inside the sampling shaft 2, and the methane sensor 5 is fixedly installed at the bottom of the sampling shaft to collect the methane concentration data of the gas in the gas cylinder 7, and is electrically connected to the data processing module to transmit the methane concentration data to the data processing module 3.

[0035] Specifically, the gas cylinder 7 is made of stainless steel, cylindrical, and has a smooth inner wall to ensure smooth gas flow. The gas cylinder 7 is provided with a gas nozzle 8, located below the gas cylinder, and equipped with a flexible latex tube for connecting to the extraction pipeline for sampling.

[0036] The sampling shaft 2 is a columnar structure matching the inner diameter of the gas cylinder 7, and is also made of stainless steel. The sampling shaft is axially sealed and slidably installed in the gas cylinder, and the pumping and exhausting functions are realized through axial movement.

[0037] The methane sensor 5 is fixedly mounted at the bottom of the sampling shaft, with the sampling end exposed in the gas cylinder, directly contacting the sampled gas, and used to collect the methane concentration data of the gas in the gas cylinder.

[0038] The data processing module 3 is installed and fixed inside the sampling shaft, electrically connected to the methane sensor, and receives, processes and transmits methane concentration data.

[0039] Sealing and limit design:

[0040] A groove is provided on the outside of the sampling shaft 2, and a sealing ring 6 (made of oil-resistant rubber) is installed in the groove to achieve a sealed sliding connection between the sampling shaft 2 and the gas cylinder 2, thereby ensuring the airtightness of the gas sample chamber.

[0041] A limit ring 9 is provided on the top of the gas cylinder 7. The limit ring 9 is made of stainless steel and is installed and fixed by threaded connection to limit the axial movement distance of the sampling shaft 2 to prevent it from falling off during operation.

[0042] Power and display:

[0043] A battery 4 (rechargeable lithium battery) is provided inside the sampling shaft 2 to provide a stable power supply for the methane sensor 5 and the data processing module 3 .

[0044] A display screen 1 (LCD screen) is installed on the upper surface of the sampling shaft, which is electrically connected to the data processing module 3 to display the methane concentration data in real time.

[0045] The specific operation method is as follows:

[0046] Preparation:

[0047] Insert the latex tube of the gas sampling nozzle 8 into the extraction pipeline, ensuring that the insertion depth is appropriate to obtain a representative gas sample.

[0048] To evacuate residual gas:

[0049] Pull the sampling shaft to make it slide upward in the gas cylinder, forming negative pressure and drawing the gas in the extraction pipeline into the gas cylinder.

[0050] Push the sampling shaft to move it downward to discharge the gas in the cylinder.

[0051] Repeat the above pulling and pushing operation twice to expel the residual air in the latex tube and the air cylinder to ensure the measurement accuracy.

[0052] Sampling and measurement:

[0053] Pull the sampling shaft again to draw the gas in the extraction pipeline into the gas cylinder to form a gas sample chamber.

[0054] The methane sensor collects the methane concentration data of the gas in the gas sample chamber and transmits it to the data processing module.

[0055] After the data processing module processes the data, the methane concentration value (such as "2.5%") is displayed on the display screen.

[0056] End measurement:

[0057] After the measurement is completed, push the sampling shaft to discharge the gas sample, pull out the latex tube, and the measurement is completed.

[0058] This embodiment realizes methane concentration measurement through simple mechanical operation. The device is portable and easy to maintain. The design of the sealing ring and the limit ring ensures the safety and stability of the operation, and is particularly suitable for use by underground workers.

[0059] Example 2

[0060] Based on Example 1, this example highlights more functions and material selections of the device, and improves its performance in data management, durability and applicability.

[0061] Main components and upgrades:

[0062] Methane sensor 5: A laser methane sensor is used, fixed at the bottom of the sampling shaft, and the sampling end is exposed in the gas cylinder. Its high accuracy and fast response characteristics are suitable for a wide range of methane concentration measurements.

[0063] Data processing module 3: installed inside the sampling shaft, it not only receives and processes methane concentration data, but also has data storage function (built-in storage chip to save measurement data) and data transmission function (supports Wi-Fi or RS485 interface, uploaded to the ring network monitoring system).

[0064] The gas cylinder 7 and the sampling shaft 2 are made of stainless steel, which is corrosion-resistant and wear-resistant, and has a smooth inner wall to ensure long-term stability. The gas nozzle is located below the gas cylinder, and is equipped with a latex tube (length 1 meter), which can be flexibly extended to different positions of the sampling pipeline for sampling.

[0065] Sealing and limiting:

[0066] A sealing ring 6 (wear-resistant rubber) is installed in the groove outside the sampling shaft 2 to ensure a sealed sliding connection; a limit ring 9 is provided on the top of the gas cylinder, which is fixedly connected to the gas cylinder by snap-fit, threaded connection, or welding to prevent the sampling shaft 2 from falling off.

[0067] Power and display:

[0068] Built-in battery, supports 8 hours of continuous work; display screen 1 is an explosion-proof LCD screen, which displays real-time data and can switch to view historical records.

[0069] The specific operation method is as follows:

[0070] Sampling and measurement:

[0071] Insert the latex tube into the extraction pipeline and pull the sampling shaft to extract the gas.

[0072] The laser methane sensor collects methane concentration data and transmits it to the data processing module.

[0073] After being processed by the data processing module, the display screen displays the concentration (such as "1.8%") in real time and automatically stores the data.

[0074] Data management and monitoring:

[0075] The data processing module uploads the measurement data to the ring network monitoring system via Wi-Fi, and the monitoring personnel can view it in real time through a computer or mobile device.

[0076] The stored historical data can be viewed in chronological order through the display screen, which is convenient for on-site analysis.

[0077] End and Maintenance:

[0078] Push the sampling shaft to discharge the gas sample and pull out the latex tube.

[0079] The device is made of stainless steel and is very durable. When cleaning, the limit ring can be removed to take out the sampling shaft and the inside of the gas cylinder can be rinsed with clean water.

[0080] This embodiment improves the measurement accuracy through the laser methane sensor, and the data storage and transmission functions realize intelligent monitoring. The stainless steel material enhances the durability of the device in the harsh environment underground, and the flexibility of the latex tube improves the sampling efficiency.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A methane measuring device for mining extraction pipeline, characterized in that: It includes a sampling shaft, a data processing module, a methane sensor and a gas cylinder; The gas cylinder is provided with a gas extraction nozzle, and the sampling shaft is axially sealed and slidably installed in the gas cylinder, so that the sampling shaft can move axially to cooperate with the gas extraction nozzle to extract and exhaust gas; The data processing module is installed and fixed inside the sampling shaft, and the methane sensor is fixedly installed at the bottom of the sampling shaft to collect methane concentration data of the gas in the gas cylinder and is electrically connected to the data processing module to transmit the methane concentration data to the data processing module.

2. The device for measuring methane in a mining extraction pipeline according to claim 1, characterized in that: A battery for providing power to the methane sensor and the data processing module is also provided in the sampling shaft.

3. The device for measuring methane in a mining extraction pipeline according to claim 1, characterized in that: A display screen is provided on the upper surface of the sampling shaft and is electrically connected to the data processing module.

4. The device for measuring methane in a mining extraction pipeline according to claim 1, characterized in that: A sealing ring installed on the outside of the sampling shaft is provided between the sampling shaft and the gas cylinder to achieve a sealed sliding connection between the sampling shaft and the gas cylinder.

5. The mining extraction pipeline methane measuring device according to claim 1 is characterized in that: A groove for installing a sealing ring is provided on the outer side of the sampling shaft.

6. The device for measuring methane in a mining extraction pipeline according to claim 1, characterized in that: A limiting ring is arranged on the top of the gas cylinder to limit the axial moving distance of the sampling shaft to prevent it from falling off.

7. The device for measuring methane in a mining extraction pipeline according to claim 1, characterized in that: The methane sensor is a laser methane sensor, and a sampling end of the laser methane sensor is exposed in the gas cylinder.

8. The device for measuring methane in a mining extraction pipeline according to claim 1, characterized in that: The data processing module has data transmission function and data storage function, and is used for data storage and external data transmission and uploading to the ring network.

9. The device for measuring methane in a mining extraction pipeline according to claim 1, characterized in that: The gas cylinder and the sampling shaft are made of stainless steel or flame-retardant antistatic transparent plastic material, and the inner walls are smooth.

10. The device for measuring methane in a mining extraction pipeline according to claim 1, characterized in that: The gas extraction nozzle is located below the gas cylinder and is equipped with a latex tube to extend to different positions of the extraction pipeline for sampling.

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