Downhole gas automatic detection device

Abstract

The invention belongs to the technical field of coal mining safety equipment, and particularly relates to an automatic underground gas detection device. The invention provides an underground gas automatic detection device which comprises a gas suction pipeline assembly, a gas flow driving assembly and a detection assembly, the tail end of the gas suction pipeline assembly is connected with the detection assembly, and the gas flow driving assembly communicates with the gas suction pipeline assembly and is used for increasing the gas flow speed in the gas suction pipeline assembly; the air suction pipeline assembly comprises an air suction pipe, a connecting pipe and a filter pipe, and the tail end of the air suction pipe is connected with the front end of the filter pipe through the connecting pipe. According to the technical scheme, the filter pipe is arranged in the air suction pipeline assembly to filter particle impurities, blockage is effectively avoided, and the accuracy of the detection result of the detection assembly is ensured; and furthermore, the gas flow speed is accelerated through the gas flow driving assembly, so that the high gas flow passing efficiency and the higher detection efficiency of the detection device are realized.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of coal mining safety equipment, and particularly relates to an underground gas automatic detection device. BACKGROUND

[0002] In coal mining and other underground engineering operations, the safety monitoring of the underground environment is a key link to protect the lives of operating personnel and prevent accidents, among which, the real-time detection of underground gas is particularly important, because the accumulation of harmful gases such as gas (main component is methane) and carbon monoxide may directly lead to serious safety accidents such as explosion and poisoning.

[0003] In the prior art, the underground gas automatic detection technology mainly relies on the combination of sensor technology and data transmission technology to realize remote monitoring and early warning of the underground gas concentration. However, although the existing technology improves the detection efficiency and response speed to a certain extent, there are still deficiencies in efficient gas suction, multi-stage filtration and stable transmission, especially in the high-dust and high-humidity underground environment, how to ensure that the gas detection device can continuously and stably suck gas and effectively filter out the particulate impurities in the gas becomes the key to improve the detection accuracy and the reliability of the device. In the traditional technology, the gas suction often relies on a simple fan or pumping system, which is difficult to maintain high-efficiency airflow suction capacity in a complex environment. At the same time, the filtering system mostly uses a single or simple filtering structure, which is difficult to effectively remove the tiny particles in the gas, which not only may block the subsequent detection components, but also may affect the accuracy of the detection results.

[0004] Therefore, it has become a problem to be solved for those skilled in the art to develop an underground gas automatic detection device to solve the technical defects in the prior art that the underground gas detection device is difficult to maintain high-efficiency airflow suction capacity and the detection components are easily blocked by tiny particles. SUMMARY

[0005] Therefore, it has become a problem to be solved for those skilled in the art to develop an underground gas automatic detection device to solve the technical defects in the prior art that the underground gas detection device is difficult to maintain high-efficiency airflow suction capacity and the detection components are easily blocked by tiny particles.

[0006] The application provides an underground gas automatic detection device, which comprises an air suction pipeline assembly, an airflow driving assembly and a detection assembly, the tail end of the air suction pipeline assembly is connected with the detection assembly, and the airflow driving assembly is in communication with the air suction pipeline assembly and is used for accelerating the airflow speed in the air suction pipeline assembly. The air suction pipeline assembly comprises an air suction pipe, a connecting pipe and a filter pipe, and the tail end of the air suction pipe is connected with the front end of the filter pipe through the connecting pipe.

[0007] In one of the embodiments, the air suction pipeline assembly comprises a Venturi tube arranged at the front end of the filter tube.

[0008] In one of the embodiments, the filter tube comprises a filter pipeline body, a fixing support and a spiral filter rod; the front end of the filter pipeline body is connected with the tail end of the connecting tube; the fixing support is installed on the inner wall of the filter pipeline body; and the spiral filter rod is installed on the fixing support.

[0009] In one of the embodiments, the airflow driving assembly comprises a shell, a driving motor, a driving rod, a driving gear, a transmission gear, a movable rod, a driving wheel, a transmission belt, a transmission wheel, a first transmission rod and a fan blade. The shell is installed on the connecting tube, the inside of the shell is communicated with the connecting tube, the driving motor is installed on the inner wall of the shell, the power output end of the driving motor is connected with the driving rod, the driving rod is connected with the driving gear to drive the driving gear to rotate, the transmission gear is engaged with the driving gear, the two ends of the movable rod are respectively connected with the transmission gear and the driving wheel, the driving wheel is connected with the transmission wheel through the transmission belt, and the two ends of the first transmission rod are respectively connected with the transmission wheel and the fan blade.

[0010] In one of the embodiments, the air suction pipeline assembly further comprises a second transmission rod, a negative electrode adsorption block, an iron core, an electricity connector and a wire. The second transmission rod is connected with the transmission wheel, the first transmission rod and the second transmission rod are respectively arranged at the two sides of the transmission wheel, the inner wall of the second transmission rod is connected with the electricity connector, the output end of the electricity connector is electrically connected with one end of the wire, the other end of the wire is electrically connected with the iron core, and the negative electrode adsorption block is adsorbed with the surface of the iron core.

[0011] In one of the embodiments, the air suction pipeline assembly further comprises a mounting rod and a positioning rod; the positioning rod is connected with the second transmission rod; the mounting rod is connected with the tail end of the spiral filter rod; the negative electrode adsorption block is arranged on the inner wall of the mounting rod; and the positioning rod and the surface of the iron core are both inserted into the inner wall of the mounting rod.

[0012] In one of the embodiments, the end of the connecting tube connected with the filter tube is provided with a threaded assembly pipe connected with the inner wall of the filter tube; the airflow driving assembly further comprises a sliding rod, a filter screen and a bearing ring; the inner wall of the threaded assembly pipe is provided with a plurality of mounting grooves; the sliding rod is slidingly connected with the inner wall of the mounting grooves; the filter screen is fixedly installed on the sliding rod; the inner wall of the filter screen is connected with the bearing ring; and the inner wall of the bearing ring is sleeved with the surface of the second transmission rod.

[0013] In one of the embodiments, the airflow driving assembly further comprises a fixed frame and a controller; the inner wall of the fixed frame is rotatably connected with the first transmission rod and the second transmission rod respectively; the controller is installed on the inner wall of the shell and electrically connected with the driving motor.

[0014] In one of the embodiments, the air suction pipeline assembly further comprises an electrical control box, a display panel, an audible and visual alarm, a handle and a support column; the electrical control box is installed on the air suction pipe for monitoring the gas concentration data passing through the air suction pipe; the electrical control box is electrically connected with the audible and visual alarm; the handle is arranged on the top of the electrical control box; and the support column is connected with the surface of the air suction pipe.

[0015] In one of the embodiments, the air suction pipeline assembly further comprises a detection box, a fixed sleeve frame, a moving block, a lap support, a sleeve pipe, a reinforcing rod, a buffer spring and a damping rod; the detection box is electrically connected with the electrical control box; the detection box and the electrical control box are connected through the fixed sleeve frame; the inner wall of the fixed sleeve frame is connected with the sleeve pipe; the inner wall of the sleeve pipe is inserted with the reinforcing rod; the top end of the reinforcing rod is connected with the moving block; the top rod of the reinforcing rod is connected with the buffer spring; the damping rod is inserted in the buffer spring; and one end of the buffer spring and the damping rod is fixedly connected with the inner wall of the sleeve pipe.

[0016] In one of the embodiments, the inner wall of the detection box is provided with a detector; and the surface of the detection box is provided with a protective cover.

[0017] In summary, the application provides an automatic underground gas detection device, which comprises an air suction pipeline assembly, an airflow driving assembly and a detection assembly; the tail end of the air suction pipeline assembly is connected with the detection assembly; the airflow driving assembly is communicated with the air suction pipeline assembly for accelerating the airflow speed in the air suction pipeline assembly; the air suction pipeline assembly comprises an air suction pipe, a connecting pipe and a filter pipe; and the tail end of the air suction pipe is connected with the front end of the filter pipe through the connecting pipe. In the technical scheme provided by the application, the filter pipe is arranged in the air suction pipeline assembly to filter particulate impurities, which effectively avoids blockage and ensures the accuracy of the detection result of the detection assembly; further, the airflow driving assembly accelerates the gas flow speed, which realizes high-efficiency airflow passing efficiency of the detection device and higher detection efficiency; and the technical defects of the prior art, i.e. difficulty in maintaining high-efficiency airflow suction capacity and easy blockage of the detection components by small particles, are solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only constitute the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0019] Figure 1 In the technical solutions provided by the embodiments of the present application, one of the schematic diagrams of the three-dimensional structure of the downhole gas automatic detection device is provided. Figure 2 In the technical solutions provided by the embodiments of the present application, one of the schematic diagrams of the three-dimensional structure of the downhole gas automatic detection device is provided. Figure 3 In the downhole gas automatic detection device provided by the embodiments of the present application, a partial enlarged schematic diagram of the surroundings of the Venturi tube is provided. Figure 4 In the downhole gas automatic detection device provided by the embodiments of the present application, a partial enlarged schematic diagram of the surroundings of the spiral filter rod is provided. Figure 5 In the downhole gas automatic detection device provided by the embodiments of the present application, a partial enlarged schematic diagram of the surroundings of the filter screen is provided. Figure 6 In the downhole gas automatic detection device provided by the embodiments of the present application, a partial enlarged schematic diagram of the surroundings of the transmission wheel is provided. Figure 7 In the downhole gas automatic detection device provided by the embodiments of the present application, a partial enlarged schematic diagram of the surroundings of the damping rod is provided. Figure 8 In the technical solutions provided by the embodiments of the present application, one of the schematic diagrams of the three-dimensional structure of the downhole gas automatic detection device is provided. Among them, the suction pipe 1, the connecting pipe 2, the filter pipe 3, the Venturi tube 4, the fixed support 5, the spiral filter rod 6, the shell 7, the driving motor 8, the driving rod 9, the driving gear 10, the transmission gear 11, the movable rod 12, the driving wheel 13, the transmission belt 14, the transmission wheel 15, the first transmission rod 16, the fan blade 17, the second transmission rod 18, the positioning rod 19, the iron core 20, the power connector 21, the wire 22, the mounting rod 23, the negative adsorption block 24, the threaded assembly pipe 25, the sliding rod 26, the filter screen 27, the fixed frame 28, the controller 29, the electrical control box 30, the display panel 31, the sound and light alarm 32, the handle 33, the support column 34, the detection box 35, the fixed sleeve frame 36, the moving block 37, the lap joint support 38, the sleeve pipe 39, the reinforcing rod 40, the buffer spring 41, the damping rod 42, the detector 43 and the protective cover 44. DETAILED DESCRIPTION

[0020] The embodiment of the present application provides a kind of automatic detection device of downhole gas, for solving the technical defects of existing downhole gas detection device, it is difficult to maintain high efficient airflow suction capacity and detection component is easily blocked by small particles.

[0021] To make the above objectives, features and advantages of the present application more apparent, a detailed description of the specific embodiments of the present application is given below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways than described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0022] In the description of the present application, it should be understood that the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0023] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and other terms should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In the present application, it should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes, and do not represent the only implementation.

[0025] Please refer to Figures 1 to 8The embodiment of the present application provides a kind of automatic detection device of downhole gas, comprising: air suction pipeline component, airflow driving component and detection component, the tail end of air suction pipeline component is connected with detection component, airflow driving component is communicated with air suction pipeline component, for accelerating the airflow speed in air suction pipeline component;Air suction pipeline component includes: air suction pipe 1, adapter pipe 2 and filter pipe 3, the tail end of air suction pipe 1 is connected with the front end of filter pipe 3 by adapter pipe 2.

[0026] The embodiment of the present application provides a kind of automatic detection device of downhole gas, in the downhole gas detection work, air suction pipeline component is inhaled into detection component after gas and carries out subsequent detection operation to gas;Wherein, filter pipe 3 is arranged in air suction pipeline component, gas entering through air suction pipe 1 can be filtered and then enters detection component, effectively prevent the particles and other impurities in gas from blocking detection component, at the same time, also can avoid the influence of particles and other impurities in gas on the accuracy of detection result of detection component, further ensure the accuracy of detection result of detection device;Airflow driving component is communicated with air suction pipeline component, can accelerate the airflow speed in air suction pipeline component, when the gas flow rate is slow, still can realize the efficient passage of airflow and complete gas detection.The technical scheme provided by the embodiment of the present application solves the technical defects that the downhole gas detection device in the prior art is difficult to maintain high efficient airflow suction capacity and detection component is easily blocked by small particles.

[0027] Further optimize technical scheme, on the basis of ensuring the acceleration effect of airflow driving component to gas, guarantee that airflow can quickly pass through air suction pipeline component and enter detection component;At the same time, take into account that airflow driving component structure is simple, and good working stability, in the technical scheme provided by the embodiment of the present application, airflow driving component includes: venturi 4, venturi 4 is arranged at the front end of filter pipe 3.Utilize the venturi effect of venturi 4, effectively accelerate the gas that enters air suction pipe 1 and passes through venturi 4, effectively improve the suction efficiency of airflow.

[0028] Further optimize technical scheme, on the basis of realizing the good filtering effect of filter pipe 3, take into account that filter pipe 3 structure is simple and stable and reliable, in the detection device provided by the embodiment of the present application, filter pipe 3 includes: filter pipe 3 main body, fixed support 5 and spiral filter rod 6;The front end of filter pipe 3 main body is connected with the tail end of adapter pipe 2, fixed support 5 is installed on the inner wall of filter pipe 3 main body, and spiral filter rod 6 is installed on fixed support 5.Filter pipe 3 main body is the structural basis of filter pipe 3, after the gas passes through filter pipe 3 main body, under the rotation of spiral filter rod 6, separate the particles in the gas passed through, fixed support 5 provides stable support to spiral filter rod 6, ensure that it can rotate stably without displacement, so that good filtering effect is realized.

[0029] Further optimize the technical scheme, realize the acceleration effect of the airflow driving assembly on the gas, in the technical scheme provided by the embodiment of the application, the airflow driving assembly comprises: a shell 7, a driving motor 8, a driving rod 9, a driving gear 10, a transmission gear 11, a movable rod 12, a driving wheel 13, a transmission belt 14, a transmission wheel 15, a first transmission rod 16 and a fan blade 17; the shell 7 is installed on the connecting pipe 2, the inside of the shell 7 is communicated with the connecting pipe 2, the driving motor 8 is installed on the inner wall of the shell 7, the power output end of the driving motor 8 is connected with the driving rod 9, the driving rod 9 is connected with the driving gear 10 to drive the driving gear 10 to rotate, the transmission gear 11 is engaged with the driving gear 10, the two ends of the movable rod 12 are respectively connected with the transmission gear 11 and the driving wheel 13, the driving wheel 13 is connected with the transmission wheel 15 through the transmission belt 14, and the two ends of the first transmission rod 16 are respectively connected with the transmission wheel 15 and the fan blade 17. After the shell 7 is installed on the connecting pipe 2, other structures installed in the inside of the shell 7 are communicated with the inside of the connecting pipe 2, the airflow driving assembly can be communicated with the air inlet pipeline assembly, and the gas flow rate is accelerated. In the working process of the airflow driving assembly, the driving motor 8 drives the driving gear 10 to rotate through the driving rod 9, the driving gear 10 drives the transmission gear 11 to rotate in engagement, the transmission gear 11 drives the driving wheel 13 to rotate through the movable rod 12, and then the transmission wheel 15 is driven through the transmission belt 14, the transmission wheel 15 is connected with the first transmission rod 16, the first transmission rod 16 drives the fan blade 17 to accelerate the gas flow, and the rotation of the fan blade 17 realizes the acceleration of the airflow driven by the airflow driving assembly.

[0030] In order to provide stable and continuous power for stable rotation of the spiral filter rod 6, in the technical scheme provided by the embodiment of the application, the air inlet pipeline assembly further comprises: a second transmission rod 18, an iron core 20, an electric connector 21, a wire 22 and a negative adsorption block 24; the second transmission rod 18 is connected with the transmission wheel 15, the first transmission rod 16 and the second transmission rod 18 are respectively arranged on the two sides of the transmission wheel 15, the inner wall of the second transmission rod 18 is connected with the electric connector 21, the output end of the electric connector 21 is electrically connected with one end of the wire 22, the other end of the wire 22 is electrically connected with the iron core 20, the negative adsorption block is adsorbed with the surface of the iron core, and the positioning rod 19 is connected with the second transmission rod 18. The second transmission rod 18 and the first transmission rod 16 are respectively arranged on the two sides of the transmission wheel 15, the transmission wheel 15 provides power for the second transmission rod 18, the positioning rod 19 and the iron core 20 connected with the second transmission rod reciprocate, the iron core 20 generates a magnetic field through the electric connector 21 and the wire 22, and the negative adsorption block 24 is formed by magnetic adsorption, so that the stable rotation of the spiral filter rod 6 is realized.

[0031] Further optimize the technical scheme, in order to strengthen the structural stability of the air pipeline assembly, the air pipeline assembly further comprises: mounting rod 23 and positioning rod 19, the mounting rod 23 is connected with the tail end of the spiral filter rod 6, the negative adsorption block 24 is arranged on the inner wall of the mounting rod 23, and the positioning rod 19 is inserted into the inner wall of the mounting rod 23. The mounting rod 23 provides a mounting space for each structure of the air pipeline assembly, the positioning rod 19 positions each component, and the stability of the detection device is further improved.

[0032] In order to facilitate the connection and fixation of the pipeline in the air pipeline assembly, facilitate the maintenance and disassembly of the detection device in the later period, and carry out secondary filtration on the gas flowing through the airflow driving assembly to prevent the airflow driving assembly from being blocked, the detection device provided by the embodiment of the application is provided with a threaded assembly pipe 25 at one end of the connecting pipe 2 connected with the filter pipe 3, and the threaded assembly pipe 25 is connected with the inner wall of the filter pipe 3. The airflow driving assembly further comprises a sliding rod 26, a filter screen 27 and a bearing ring, the inner wall of the threaded assembly pipe 25 is provided with a plurality of mounting grooves, the sliding rod 26 is slidably connected with the inner wall of the mounting groove, the filter screen 27 is fixedly installed on the sliding rod 26, the inner wall of the filter screen 27 is connected with the bearing ring, and the inner wall of the bearing ring is sleeved with the surface of the second transmission rod 18. The threaded assembly pipe 25 and the filter screen 27 can be separately disassembled, which facilitates quick replacement of the two during maintenance and cleaning, and is conducive to better filtering of impurities in the gas.

[0033] In the detection device provided by the embodiment of the application, the airflow driving assembly further comprises a fixed frame 28 and a controller 29, the inner wall of the fixed frame 28 is rotatably connected with the first transmission rod 16 and the second transmission rod 18 on both sides, the controller 29 is installed on the inner wall of the housing 7, and the controller 29 is electrically connected with the driving motor 8. The fixed frame 28 can protect the protective transmission belt 14 and the transmission wheel 15, the controller 29 controls the start and stop of the driving motor, and the working of the airflow driving assembly is better controlled.

[0034] The detection device provided by the embodiment of the present application further comprises: an electrical control box 30, a display panel 31, an audible and light alarm 32, a handle 33, and a support column 34. The electrical control box 30 is installed on the air suction pipe 1 and is used for monitoring the gas concentration data passing through the air suction pipe 1. The electrical control box 30 is electrically connected with the audible and light alarm 32. The handle 33 is arranged on the top of the electrical control box 30. The support column 34 is connected with the surface of the air suction pipe 1. The electrical control box 30 serves as the control center of the air suction pipe assembly, is responsible for coordinating the operation of each component, and feeds back the key data such as the gas concentration and the equipment state in real time through the display panel 31, so as to facilitate the monitoring of the operator. When the dangerous gas is detected, the audible and light alarm 32 is triggered immediately, and the on-site personnel are warned through sound and light, so as to ensure the rapid response. The design of the handle 33 and the support column 34 makes the device convenient to carry and fix, and adapts to the complex environment in the well.

[0035] Further optimization of the technical scheme, the working environment in the well is poor, in order to prevent the influence of vibration of other equipment in the well on the detection device, the technical scheme provided by the embodiment of the present application further comprises: a detection box 35, a fixed sleeve frame 36, a moving block 37, a lap bracket 38, a sleeve pipe 39, a reinforcing rod 40, a buffer spring 41, and a damping rod 42. The detection box 35 is electrically connected with the electrical control box 30. The detection box 35 and the electrical control box 30 are connected through the fixed sleeve frame 36. The inner walls of the fixed sleeve frame 36 are connected with the sleeve pipe 39. The inner wall of the sleeve pipe 39 is inserted with the reinforcing rod 40. The top end of the reinforcing rod 40 is connected with the moving block 37. The top end of the reinforcing rod 40 is connected with the buffer spring 41. The damping rod 42 is inserted in the buffer spring 41. One end of the buffer spring 41 and the damping rod 42 is fixedly connected with the inner wall of the sleeve pipe 39. The detection box 35 serves as the core component of gas detection and is connected with the device main body through the fixed sleeve frame 36, so as to ensure stable installation. The moving block 37 can slide flexibly in the fixed sleeve frame 36, so as to adapt to different installation environments. The lap bracket 38 enhances the support of the overall structure. The reinforcing rod 40 provided in the sleeve pipe 39 is connected with the moving block 37 and provides rigid support, so as to prevent the detection box 35 from being displaced under vibration or impact. The buffer spring 41 and the damping rod 42 cooperate with each other, absorb external vibration and impact energy, reduce the influence on the internal precision detector 43 of the detection box 35, so as to ensure the accuracy and stability of the detection data. The vibration resistance of the device is improved, and the environmental adaptability is enhanced, so as to ensure reliable operation under complex working conditions in the well.

[0036] Further optimize technical solutions, the technical solutions provided by the embodiments of the present application, the detection box 35 is built-in high-precision detector 43, for analyzing the gas composition, its outside is provided with a protective cover 44, prevent dust, water vapor and other interference detection results, at the same time convenient to open and close maintenance, realize the intelligent, portable and reliability of gas detection, ensure the safety and efficiency of downhole operation.

[0037] In the working process of the detection device, the operator holds the handle 33 and directs the suction pipe 1 to the direction of the gas flow to be detected, starts the power supply in the electrical control box 30, and the display panel 31 is lit to display the initial state (such as power, sensor calibration completion prompt). The driving motor 8 drives the transmission belt 14 to run through the driving gear 10 and the transmission gear 11, and the linkage fan blade 17 rotates to generate negative pressure, which sucks the downhole gas into the suction pipe 1. The gas enters the filter pipe 3 after being accelerated by the Venturi tube 4, and the spiral filter rod 6 rotates at high speed under the magnetic adsorption of the iron core 20 and the negative adsorption block 24, which separates the coal dust and large particles in the gas and throws them to the pipe wall, avoiding blocking the subsequent detection components. When the gas passes through the filter screen 27 in the threaded assembly pipe 25, the screen supported by the sliding rod 26 further intercepts small particles, and the bearing ring design ensures that the screen does not rotate with the second transmission rod 18, maintaining the filtering efficiency. The fixed frame 28 protects the transmission components from dust erosion, and the controller 29 adjusts the speed of the driving motor 8 in real time to ensure the stability of the gas flow speed. The filtered clean gas enters the detection box 35, and the high-precision detector 43 rapidly analyzes the gas composition (such as methane, carbon monoxide), and the data is transmitted to the electrical control box 30 in real time. The display panel 31 dynamically updates the gas concentration value, and if the methane concentration exceeds 1% (safety threshold), the controller 29 immediately triggers the audible and visual alarm 32 to emit high-frequency buzzing and red flashing light to remind the surrounding personnel to evacuate. When the downhole equipment is running, the buffer spring 41 and the damping rod 42 absorb the impact to prevent the internal elements of the detection box 35 from loosening and ensure the accuracy of the detection data. If the filter screen 27 is found to be blocked (feedback through the gas flow sensor), the operator can quickly unscrew the threaded assembly pipe 25 to replace the screen, and the protective cover 44 can be opened to directly clean the detector 43 probe, which is convenient to maintain. The device has a built-in memory to record historical concentration data, which is uploaded to the ground monitoring center through the mine communication network, which is convenient for safety personnel to analyze the trend and make ventilation or shutdown decisions. Multiple devices are connected to form a monitoring network, covering key areas of the mine, and realizing safe protection without dead angles.

[0038] From the above technical scheme, the underground gas automatic monitoring device provided by the embodiment of the application has the following advantages: 1. Through the setting of the air suction pipe, the connecting pipe, the filter pipe, the Venturi tube, the fixing support, the spiral filter rod, the protection box, the driving motor, the transmission gear set, the transmission belt, the fan blade, the iron core and the adsorption assembly, the gas is efficiently sucked under the action of the Venturi tube, and the particle impurities are removed through the rotating separation action of the spiral filter rod, and the magnetic adsorption structure ensures the stable operation of the filter rod to avoid jamming; the transmission system is linked through the gear and the belt, the fan blade is driven to enhance the airflow, and the gas flow is more uniform and stable, so that the effects of efficient gas suction, multi-stage filtration and stable transmission are achieved, and the accuracy of detection and the reliability of the device are improved.

[0039] 2. Through the setting of the fixed sleeve frame, the moving block, the lap joint support, the sleeve pipe, the reinforcing rod, the buffer spring and the damping rod, the detection box can flexibly adjust the installation position to adapt to different underground environments, and the reinforcing rod and the buffer structure effectively absorb external vibration and impact, reduce the interference to the precision detector, and ensure the stability of the equipment under complex working conditions of the mine, so that the effects of enhancing the vibration resistance, adaptability and long-term operation stability of the device are achieved, and the detection data is more accurate and reliable.

[0040] 3. Through the setting of the electrical control box, the display panel, the audible and visual alarm, the handle, the support column, the detection box and the protective cover, the operator can monitor the gas concentration data in real time, and quickly prewarn through the audible and visual signals in dangerous situations, the portable design is convenient for moving and fixing, and the protective cover protects the detector from dust and moisture, so that the effects of intelligent monitoring, rapid prewarning, convenient maintenance and environmental protection are achieved, and the safety and operation convenience of underground gas detection are comprehensively improved.

[0041] In summary, the underground gas automatic detection device provided by the embodiment of the application comprises: an air suction pipeline assembly, an airflow driving assembly and a detection assembly, the tail end of the air suction pipeline assembly is connected with the detection assembly, the airflow driving assembly is communicated with the air suction pipeline assembly and is used to accelerate the airflow speed in the air suction pipeline assembly; the air suction pipeline assembly comprises: an air suction pipe, a connecting pipe and a filter pipe, the tail end of the air suction pipe is connected with the front end of the filter pipe through the connecting pipe. In the technical scheme provided by the application, the filter pipe is arranged in the air suction pipeline assembly to filter particle impurities, which effectively avoids blockage and ensures the accuracy of the detection result of the detection assembly; and further, the airflow driving assembly accelerates the gas flow rate, realizes the efficient airflow passing efficiency of the detection device and higher detection efficiency; and the technical defects that the underground gas detection device in the prior art is difficult to maintain high efficient airflow suction capacity and the detection components are easily blocked by small particles are solved.

[0042] The technical features of the above-described embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not result in contradictions, they shall be considered as falling within the scope of the present disclosure. Meanwhile, other embodiments can be derived from the above-described embodiments, so that structural and logical substitutions and changes can be made without departing from the scope of the present disclosure.

[0043] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it shall not be understood as a limitation on the patent application scope. It shall be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all fall within the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. An automatic downhole gas detection device, characterized in that, The detection device includes: an inhalation tubing assembly, an airflow driving assembly, and a detection assembly. The tail end of the inhalation tubing assembly is connected to the detection assembly, and the airflow driving assembly is connected to the inhalation tubing assembly to accelerate the airflow speed in the inhalation tubing assembly. The air intake tubing assembly includes an air intake tube, a connecting tube, and a filter tube, wherein the tail end of the air intake tube is connected to the front end of the filter tube through the connecting tube.

2. The detection device according to claim 1, characterized in that, The intake tubing assembly includes a venturi tube, which is disposed at the front end of the filter tube.

3. The detection device according to claim 1 or 2, characterized in that, The filter tube includes: a filter tube body, a fixed bracket, and a spiral filter rod; the front end of the filter tube body is connected to the rear end of the connecting tube, the fixed bracket is installed on the inner wall of the filter tube body, and the spiral filter rod is installed on the fixed bracket.

4. The detection device according to claim 3, characterized in that, The airflow drive assembly includes: a housing, a drive motor, a drive rod, a drive gear, a transmission gear, a movable rod, a drive wheel, a transmission belt, a transmission wheel, a first transmission rod, and fan blades; The outer casing is installed on the connecting pipe, and the interior of the outer casing is connected to the connecting pipe. The drive motor is installed on the inner wall of the outer casing. The power output end of the drive motor is connected to the drive rod. The drive rod is connected to the drive gear to drive the drive gear to rotate. The transmission gear meshes with the drive gear. The two ends of the movable rod are respectively connected to the transmission gear and the drive wheel. The drive wheel and the transmission wheel are connected through the transmission belt. The two ends of the first transmission rod are respectively connected to the transmission wheel and the fan blade.

5. The detection device according to claim 4, characterized in that, The intake pipe assembly also includes: a second transmission rod, a negative electrode adsorption block, an iron core, a connector, and wires; The second transmission rod is connected to the transmission wheel. The first transmission rod and the second transmission rod are respectively disposed on both sides of the transmission wheel. The inner wall of the second transmission rod is connected to the connector. The output end of the connector is electrically connected to one end of the wire. The other end of the wire is electrically connected to the iron core. The negative electrode adsorption block is adsorbed onto the surface of the iron core.

6. The detection device according to claim 5, characterized in that, The intake pipe assembly further includes: an installation rod and a positioning rod, the positioning rod being connected to the second transmission rod, the installation rod being connected to the tail end of the spiral filter rod, the negative electrode adsorption block being disposed on the inner wall of the installation rod, and the surfaces of the positioning rod and the iron core being inserted into the inner wall of the installation rod.

7. The detection device according to claim 5 or 6, characterized in that, The end of the connecting pipe connected to the filter pipe is provided with a threaded assembly pipe, which is connected to the inner wall of the filter pipe; the airflow drive assembly also includes: a sliding rod, a filter screen, and a bearing ring, the inner wall of the threaded assembly pipe is provided with several mounting grooves, the sliding rod is slidably connected to the inner wall of the mounting groove, the filter screen is fixedly installed on the sliding rod, the inner wall of the filter screen is connected to the bearing ring, and the inner wall of the bearing ring is sleeved on the surface of the second transmission rod.

8. The detection device according to claim 7, characterized in that, The airflow drive assembly further includes a fixed frame and a controller; the inner walls of the fixed frame are rotatably connected to the first transmission rod and the second transmission rod respectively, the controller is installed on the inner wall of the housing, and the controller is electrically connected to the drive motor.

9. The detection device according to any one of claims 1 to 3, characterized in that, The intake pipe assembly also includes: an electrical control box, a display panel, an audible and visual alarm, a handle, and a support column. The electrical control box is installed on the intake pipe and is used to monitor the gas concentration data passing through the intake pipe. The electrical control box is electrically connected to the audible and visual alarm. The handle is located on the top of the electrical control box, and the support column is connected to the surface of the intake pipe.

10. The detection device according to claim 9, characterized in that, The intake tubing assembly further includes: a detection box, a fixed frame, a movable block, an overlapping bracket, a sleeve, a reinforcing rod, a buffer spring, and a damping rod; the detection box is electrically connected to the electrical control box, and the detection box and the electrical control box are connected through the fixed frame; the inner walls of the fixed frame are connected to the sleeve, the inner wall of the sleeve is inserted into the reinforcing rod, the top of the reinforcing rod is connected to the movable block, the top of the reinforcing rod is connected to the buffer spring, the damping rod is inserted into the inside of the buffer spring, and one end of the buffer spring and the damping rod are fixedly connected to the inner wall of the sleeve.

Images