Safety detection device and method for gas in pipeline

Abstract

The invention discloses a safety detection device and method for gas in a pipeline, and belongs to the field of gas detection. A safety detection device for gas in a pipeline comprises a driving seat, a gas extraction bin is fixedly connected to the top of the driving seat, a detection bin is fixedly connected to the top of the gas extraction bin, the safety detection device further comprises gas extraction blades, linkage shafts are rotationally connected to the two sides of an inner cavity of the gas extraction bin, and the gas extraction blades are fixedly connected to the linkage shafts; the air exhaust bin is communicated with an inner cavity of the detection bin, a detection impeller is rotatably connected in the detection bin, and a plurality of groups of detection sensors are fixed on blades of the detection impeller at intervals; the driving seat is driven by the walking shaft to integrally move along the mine track, and gas in a mine is synchronously extracted by utilizing rotation of the gas extraction blade, so that comprehensive gas detection is carried out on the whole mine, whether excessive leakage exists in a gas drainage pipeline or not is obtained in time, the detection efficiency is improved, and the safety in a mine tunnel is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of gas detection, and in particular to a device and method for detecting gas safety in a pipeline. Background Art

[0002] The main component of gas in coal mines is methane. When its concentration reaches a certain range, it is very easy to cause an explosion when encountering a fire source. In order to reduce this risk and recycle methane, it is necessary to extract the gas from the coal seam through a gas extraction pipeline and discharge it to a safe place or for treatment.

[0003] Gas extraction pipelines, like the transport rails in a mine, are laid along the mine. However, gas extraction pipelines have many connecting sections and may break during long-term use, which can easily cause gas leakage into the shaft. To ensure the safety of mine operations and prevent potential catastrophic accidents, it is usually necessary to regularly conduct gas concentration tests inside the mine where the gas extraction pipelines are installed to ensure the safety of working in the confined space within the mine.

[0004] At present, workers mainly wear law enforcement devices and portable gas detectors to enter mines to conduct gas detection. Although real-time monitoring can be achieved, it has certain limitations and cannot guarantee the safety of internal workers. In addition, multi-point operations are required to complete comprehensive detection work, and the detection efficiency is low. Therefore, a gas safety detection device and method for pipelines are proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the prior art that the safety of internal workers cannot be guaranteed, multiple points of operation are required to complete comprehensive detection work, and the detection efficiency is low, and a gas safety detection device and method in the pipeline are proposed.

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

[0007] A gas safety detection device in a pipeline includes a drive seat, the top of the drive seat is fixedly connected to an air pumping bin, the top of the air pumping bin is fixedly connected to a detection bin, and also includes: air pumping blades, both sides of the inner cavity of the air pumping bin are rotatably connected to a linkage shaft, the air pumping blades are fixedly connected to the linkage shaft, and the air pumping bin is communicated with the inner cavity of the detection bin, wherein a detection impeller is rotatably connected in the detection bin, a plurality of detection sensors are fixed at intervals on the blades of the detection impeller, and a driving part that simultaneously drives two groups of linkage shafts to rotate is provided in the air pumping bin, and a walking wheel is installed in the drive seat, and a transmission part that drives the walking wheel to rotate is provided in the drive seat; a dust filter assembly, which is arranged on the air pumping bin and is used to filter dust particles in the gas.

[0008] In order to improve the detection efficiency, preferably, the driving part includes a driving motor, which is fixed on the top of the inner cavity of the vacuum chamber, and the output shaft of the driving motor is connected to the two sets of linkage shafts through a pulley group. Sealing plates are fixedly connected on both sides of the inner cavity of the detection chamber, and a detection cavity is formed between the two sets of sealing plates and the inner cavity of the detection chamber, and the detection impeller is located in the detection cavity. Exhaust grooves are staggered on the sealing plates on both sides, and the exhaust grooves on both sides face the detection impeller from both sides respectively. An exhaust pipe is fixedly connected to the outer wall of the drive seat, and an air duct is fixedly connected to the outer wall of the detection chamber, and both ends of the air duct are respectively connected to the detection cavity and the exhaust pipe input end.

[0009] In order to improve the detection accuracy, preferably, the dust filter assembly includes a dust filter box, the dust filter box is fixed on the air extraction chamber, the inner cavity of the dust filter box is fixedly connected to the dust filter plate, the outer wall of the dust filter box is provided with air inlet grooves at equal intervals, a ventilation groove is provided between the dust filter box and the air extraction chamber, and the bottom of the dust filter box is fixedly connected to a dust discharge sealing plate.

[0010] Furthermore, a signal transmitter is fixedly connected to the top of the gas extraction chamber, and the signal transmitter is electrically connected to the detection sensor. The signal transmitter is used to mark and report abnormal gas detection areas.

[0011] In order to improve the detection efficiency, preferably, a driving compartment is opened on both sides of the driving seat, a walking shaft is installed between the two groups of driving compartments, the walking wheel is fixed on the middle outer wall of the walking shaft, and the two ends of the walking shaft slide in contact with the inner walls of the driving compartments on both sides; wherein, a limiting slide is slidably connected in the driving compartment, the limiting slide is in contact with the inner wall of the driving compartment, and a first spring is fixedly connected between the top of the limiting slide and the top of the driving compartment, and the walking shaft passes through the two groups of limiting slides and is rotatably connected thereto.

[0012] Furthermore, the transmission part includes a transmission cylinder, a limiting groove is provided in the transmission cylinder, the bottom end of the linkage shaft passes through the transmission cylinder and is fixedly connected to a limiting slider, a limiting plate is fixedly connected to the outer wall of the linkage shaft, a second spring is fixedly connected between the limiting plate and the top of the transmission cylinder, a first oblique wheel is fixedly connected to the bottom of the transmission cylinder, a second oblique wheel is fixedly connected to the outer wall of the walking shaft located in the driving bin, and the first oblique wheel and the second oblique wheel are in fit with each other.

[0013] The cam is fixedly mounted on the dust collecting box, and the movable frame is provided with a plurality of movable members, each of which is connected to the filter pocket of the filter pocket.

[0014] In order to ensure the stability of walking, preferably, a shovel plate is rotatably connected to the outer wall of the driving seat, a counterweight block is fixedly connected to the side wall of the shovel plate, and an air blow pipe is fixedly connected to the outer wall of the driving seat, the input end of the air blow pipe is connected to the inner cavity of the piston chamber, and the output end of the air blow pipe is toward the top of the shovel plate.

[0015] Furthermore, both sides of the bottom of the driving seat are fixedly connected with electric push rods, the telescopic ends of the electric push rods are fixedly connected with mounting plates, and both sides of the inner cavity of the mounting plate are rotatably connected with limit wheels.

[0016] A method for detecting gas safety in a pipeline, comprising the following steps:

[0017] Step 1: Fix the drive seat as a whole on the rails in the mine tunnel:

[0018] Step 2: The drive seat moves continuously along the rails and continuously draws air from the mine into the detection chamber for real-time gas detection:

[0019] Step 3: Mark and report the abnormal gas detection area:

[0020] Step 4: Filter the continuously extracted airflow to reduce the impact of particulate matter in the airflow on the detection.

[0021] Compared with the prior art, the present invention provides a device and method for detecting gas safety in a pipeline, which has the following beneficial effects:

[0022] 1. The pipeline gas safety detection device moves along the mine track with the driving seat through the traveling shaft, and uses the rotation of the exhaust blades to synchronously extract the gas in the mine, so as to conduct comprehensive gas detection of the entire mine and timely obtain whether there is excessive leakage in the gas extraction pipeline, thereby improving the detection efficiency and ensuring the safety in the mine tunnel.

[0023] 2. The gas safety detection device in the pipeline uses the airflow pushed by the exhaust blades to drive the detection impeller to rotate in the detection chamber, so that each group of detection sensors is evenly exposed to the gas in different areas. By using multiple sets of data for comparison, the detection accuracy is effectively improved, and the airflow is finally discharged along the air guide pipe and the exhaust pipe to the surface of the rail, thereby obtaining forward airflow thrust, assisting the drive seat to move faster, reducing power consumption, and improving detection efficiency.

[0024] 3. The gas safety detection device in the pipeline filters the dust particles in the extracted air flow through the dust filter plate, eliminating the influence of the particles on the gas concentration detection, thereby improving the detection accuracy. In addition, by using the arrangement of the magnetic plate, the pull rope, the third spring, the movable column and the impact plate, the dust filter plate can be intermittently impacted during the rotation of the walking wheel, causing the dust filter plate to vibrate as a whole, thereby shaking off the dust particles attached thereto, thereby improving the filtering effect of the dust filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a gas safety detection device in a pipeline proposed by the present invention. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the overall structure of a gas safety detection device in a pipeline proposed by the present invention. Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the overall structure of a gas safety detection device in a pipeline proposed by the present invention. Figure 3 ;

[0028] Figure 4 This is a schematic diagram of a half-section structure of a gas safety detection device in a pipeline proposed by the present invention;

[0029] Figure 5 A gas safety detection device in a pipeline proposed by the present invention Figure 4 Schematic diagram of the enlarged structure of area A in the middle;

[0030] Figure 6 A gas safety detection device in a pipeline proposed by the present invention Figure 4 Schematic diagram of the enlarged structure of the middle B area;

[0031] Figure 7 A side view of a half-section structure of a gas safety detection device in a pipeline proposed by the present invention Figure 1 ;

[0032] Figure 8 A side view of a half-section structure of a gas safety detection device in a pipeline proposed by the present invention Figure 2 ;

[0033] Figure 9 This is a schematic diagram of the internal structure of a detection chamber of a pipeline gas safety detection device proposed by the present invention.

[0034] In the figure: 1. Drive seat; 2. Air extraction chamber; 21. Air extraction blade; 22. Linkage shaft; 23. Drive motor; 231. Pulley assembly; 3. Detection chamber; 31. Detection impeller; 32. Detection sensor; 33. Sealing plate; 331. Exhaust slot; 34. Exhaust pipe; 35. Air guide pipe; 4. Travel wheel; 41. Drive chamber; 42. Travel shaft; 43. Limiting slide; 44. First spring; 5. Dust filter box; 51. Dust filter plate; 52. Air inlet slot; 53. Ventilation slot; 54. Ash discharge sealing plate; 55 , moving column; 551, impact plate; 552, third spring; 553, pull rope; 56, piston chamber; 561, fourth spring; 57, piston plate; 571, lifting plate; 58, magnetic plate; 6, transmission cylinder; 61, limiting slide groove; 62, limiting slider; 63, limiting plate; 631, second spring; 64, first oblique wheel; 641, second oblique wheel; 7, shovel plate; 71, counterweight block; 72, blow pipe; 8, electric push rod; 81, mounting plate; 82, limiting wheel; 9, signal transmitter. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0037] Example 1:

[0038] Reference Figures 1-9A gas safety detection device in a pipeline includes a drive base 1, a vacuum chamber 2 is fixedly connected to the top of the drive base 1, a detection chamber 3 is fixedly connected to the top of the vacuum chamber 2, and also includes: a vacuum blade 21, both sides of the inner cavity of the vacuum chamber 2 are rotatably connected to a linkage shaft 22, the vacuum blade 21 is fixedly connected to the linkage shaft 22, and the vacuum chamber 2 is connected to the inner cavity of the detection chamber 3, wherein a detection impeller 31 is rotatably connected in the detection chamber 3, and multiple groups of detection sensors 32 are fixed at intervals on the blades of the detection impeller 31. The detection sensor 32 adopts existing gas sensor technology, and its specific model can be selected from GJC4 methane sensors, which are used to detect whether there is a leak in the gas extraction pipeline in the mine. That is to say, it detects whether the gas concentration in the mine is at a safe value. A signal transmitter 9 is fixedly connected to the top of the gas extraction chamber 2. The signal transmitter 9 is electrically connected to the detection sensor 32. The signal transmitter 9 is used to mark and report abnormal gas detection areas. The signal transmitter 9 adopts existing mature technology to record and transmit the detection data to the cloud terminal. A driving part that simultaneously drives two sets of linkage shafts 22 to rotate is provided in the gas extraction chamber 2, and the walking wheel 4 is installed in the driving seat 1. The driving seat 1 is provided with a transmission part that drives the walking wheel 4 to rotate; a dust filter component is provided on the gas extraction chamber 2 for filtering dust particles in the gas.

[0039] Reference Figure 1-Figure 3 Among them, electric push rods 8 are fixedly connected to both sides of the bottom of the driving seat 1, and the telescopic ends of the electric push rods 8 are fixedly connected to the mounting plate 81. Both sides of the inner cavity of the mounting plate 81 are rotatably connected to limit wheels 82. The limit wheels 82 are used to be clamped on the rails in the mine tunnel. The size of the walking wheel 4 and the limit wheels 82 is adapted to the rails.

[0040] Through the arrangement of the above structure, the driving seat 1 is placed on the rail in the mine tunnel and pressed down hard, so that the walking wheel 4 as a whole compresses the first spring 44 upward, and then the two sets of electric push rods 8 simultaneously push the limiting wheels 82 on both sides closer to the rail, and finally the limiting wheels 82 are clamped on both sides of the rail, and the rebound effect of the first spring 44 is used to make the walking wheel 4 fit tightly against the surface of the rail, so as to obtain greater friction force, so as to subsequently push the driving seat 1 to move as a whole.

[0041] Reference Figure 4 、 Figure 5, wherein the driving part includes a driving motor 23, which is fixed to the top of the inner cavity of the vacuum chamber 2, and the output shaft of the driving motor 23 is connected to the two sets of linkage shafts 22 through a pulley group 231. Driving chambers 41 are provided on both sides of the driving seat 1, and a walking shaft 42 is installed between the two sets of driving chambers 41. The walking wheel 4 is fixed on the middle outer wall of the walking shaft 42, and the two ends of the walking shaft 42 slide in contact with the inner walls of the driving chambers 41 on both sides. The driving chamber 41 is slidably connected to a limited slide 43, and the limited slide 43 is in contact with the inner wall of the driving chamber 41. The top of the limited slide 43 is fixed between the top of the driving chamber 41. It is connected to a first spring 44, and the walking shaft 42 passes through the two sets of limit slides 43 and is rotatably connected thereto; the transmission part includes a transmission cylinder 6, a limit slide groove 61 is provided in the transmission cylinder 6, the bottom end of the linkage shaft 22 passes through the transmission cylinder 6 and is fixedly connected to the limit slide 62, and a limit plate 63 is fixedly connected to the outer wall of the linkage shaft 22, and a second spring 631 is fixedly connected between the limit plate 63 and the top of the transmission cylinder 6, and a first oblique wheel 64 is fixedly connected to the bottom of the transmission cylinder 6, and a second oblique wheel 641 is fixedly connected to the outer wall of the walking shaft 42 located in the driving compartment 41, and the first oblique wheel 64 and the second oblique wheel 641 are in fit with each other.

[0042] By setting up the above structure, the drive motor 23 is turned on, and the transmission action of the pulley group 231 is used to drive the two sets of linkage shafts 22 to rotate. At this time, the friction between the first oblique wheel 64 and the second oblique wheel 641 will cause the walking shaft 42 to rotate with the walking wheel 4, so that the driving seat 1 slides along the surface of the rail as a whole, thereby performing comprehensive gas detection on the entire mine tunnel in real time, and timely obtaining whether there is excessive leakage in the gas extraction pipeline, thereby improving the detection efficiency and ensuring the safety in the mine tunnel.

[0043] In addition, the first spring 44 is provided to create a squeezing effect between the walking wheel 4 and the rail, thereby obtaining greater friction and facilitating the movement of the driving seat 1; and the limiting slide groove 61 and the limiting slider 62 are provided to enable the linkage shaft 22 to be adaptively raised and lowered, and the second spring 631 is used to enable the first oblique wheel 64 and the second oblique wheel 641 to fit tightly together for better power transmission.

[0044] Reference Figure 4 、 Figure 7-Figure 9, wherein, sealing plates 33 are fixedly connected on both sides of the inner cavity of the detection chamber 3, and a detection cavity is formed between the two sets of sealing plates 33 and the inner cavity of the detection chamber 3, and the detection impeller 31 is located in the detection cavity, and exhaust grooves 331 are staggered on the sealing plates 33 on both sides, and the exhaust grooves 331 on both sides face the detection impeller 31 from both sides respectively, and an exhaust pipe 34 is fixedly connected to the outer wall of the drive seat 1, and an air guide pipe 35 is fixedly connected to the outer wall of the detection chamber 3, and the two ends of the air guide pipe 35 are respectively connected to the detection cavity and the input end of the exhaust pipe 34; the dust filter assembly includes a dust filter box 5, the dust filter box 5 is fixed on the air extraction chamber 2, the inner cavity of the dust filter box 5 is fixedly connected to the dust filter plate 51, and the outer wall of the dust filter box 5 is provided with air inlet grooves 52 at equal intervals, and a ventilation groove 53 is provided between the dust filter box 5 and the air extraction chamber 2, and the bottom of the dust filter box 5 is fixedly connected to a dust discharge sealing plate 54.

[0045] Through the arrangement of the above structure, when the two sets of linkage shafts 22 rotate, they will drive the two sets of exhaust blades 21 to rotate in the exhaust chamber 2, thereby creating a negative pressure suction force on the side close to the ventilation groove 53, so that the airflow in the mine tunnel is sucked into the dust filter box 5 and enters the exhaust chamber 2 after passing through the dust filter plate 51, thereby removing dust particles in the airflow so as to effectively detect the gas contained in the airflow, thereby improving the detection accuracy. The filtered airflow is then pushed into the detection chamber 3 by the exhaust blades 21 and enters the detection cavity from both sides along the exhaust grooves 331 on both sides. The airflow thrust is used to drive the detection impeller 31 to rotate in the detection cavity, so that each set of detection sensors 32 is evenly exposed to the gas in different areas. Multiple sets of data are used for comparison, effectively improving the detection accuracy. In addition, the airflow entering the detection cavity will eventually enter the exhaust pipe 34 along the air guide pipe 35, and then be blown obliquely toward the surface of the rail by the exhaust pipe 34, thereby obtaining a forward airflow thrust, assisting the drive seat 1 to move faster, reducing power consumption, and improving detection efficiency.

[0046] Reference Figure 3-Figure 6The cam 552 is fixed to the outer wall of the movable column 55 in the dust filter box 5. The two ends of the third spring 552 are respectively fixed to the impact plate 551 and the inner wall of the dust filter box 5. The end of the movable column 55 in the air extraction bin 2 is fixedly connected to the pull rope 553. A piston bin 56 is provided between the dust filter box 5 and the air extraction bin 2. A piston plate 57 is slidably connected in the piston bin 56. A fourth spring 561 is fixedly connected between the bottom of the piston plate 57 and the piston bin 56. The other end of the pull rope 553 is fixed to the top of the piston plate 57. The bottom of the piston plate 57 is fixedly connected to a lifting plate 571. The bottom end of the lifting plate 571 passes through the top of the traveling wheel 4 and is fixedly connected to the magnetic plate 58. A magnetic area is provided on the outer wall of the traveling wheel 4. The magnetic plate 58 is magnetically attracted to the magnetic area of ​​the traveling wheel 4.

[0047] Through the arrangement of the above structure, during the rotation of the walking wheel 4, the attraction between the magnetic plate 58 and the magnetic area of ​​the walking wheel 4 is utilized. When the two are in the attraction area, the magnetic plate 58 will be pulled downward, and the pull rope 553 will be pulled synchronously, so that the moving column 55 slides toward the compression third spring 552. At this time, the impact plate 551 will move away from the dust filter plate 51. When it leaves the magnetic attraction area, under the rebound action of the third spring 552 and the fourth spring 561, the moving column 55 will quickly reset with the impact plate 551 and collide with the side wall of the dust filter plate 51, causing the dust filter plate 51 to vibrate as a whole, and then shake off the dust particles attached thereto, thereby improving the filtering effect of the dust filter plate 51.

[0048] Reference Figure 2 、 Figure 7 , wherein a shovel plate 7 is rotatably connected to the outer wall of the driving seat 1, a counterweight block 71 is fixedly connected to the side wall of the shovel plate 7, and an air blowing pipe 72 is fixedly connected to the outer wall of the driving seat 1. The input end of the air blowing pipe 72 is communicated with the inner cavity of the piston chamber 56, and the output end of the air blowing pipe 72 is toward the top of the shovel plate 7; the shovel plate 7 is used to overlap the rail in front of the moving driving seat 1, and is used to clean the surface of the rail to reduce the resistance of impurities to the rotation of the walking wheel 4, so that the driving seat 1 slides along the surface of the rail as a whole, and the downward movement of the magnetic plate 58 will squeeze the gas in the piston chamber 56, and make the gas move along the air blowing pipe 72 along the inclined surface of the top of the shovel plate 7, thereby removing the impurities accumulated on the shovel plate 7.

[0049] Example 2:

[0050] Reference Figures 1-9 , which is basically the same as the first embodiment, a method for detecting gas safety in a pipeline is proposed based on the first embodiment, and the steps are as follows:

[0051] Step 1: Fix the drive seat 1 as a whole on the rail in the mine tunnel:

[0052] Step 2: Make the drive seat 1 move continuously along the rails and continuously extract the air flow in the mine into the detection chamber 3 for real-time gas detection:

[0053] Step 3: Mark and report abnormal gas detection areas:

[0054] Step 4: Filter the continuously extracted airflow to reduce the impact of particulate matter in the airflow on the detection.

[0055] Reference Figures 1-9 In the present invention, when in use, the driving seat 1 is placed on the rail in the mine tunnel and pressed down hard, so that the walking wheel 4 as a whole compresses the first spring 44 upward, and then the two sets of electric push rods 8 simultaneously push the limiting wheels 82 on both sides close to the rail, and finally the limiting wheels 82 are clamped on both sides of the rail, and the rebound effect of the first spring 44 is used to make the walking wheel 4 fit tightly against the surface of the rail, so as to obtain greater friction force, so as to subsequently push the driving seat 1 to move as a whole. At the same time, the first oblique wheel 64 and the second oblique wheel 641 here are just in a tightly fitted state. Then, the driving motor 23 is turned on, and the transmission action of the pulley group 231 is used to drive the two groups of linkage shafts 22 to rotate, so that the two groups of exhaust blades 21 rotate in the exhaust chamber 2, thereby opening a negative pressure suction force on the side close to the ventilation groove 53, so that the airflow in the mine tunnel is sucked into the dust filter box 5, and enters the exhaust chamber 2 after passing through the dust filter plate 51. Then, the filtered airflow will be pushed into the detection chamber 3 by the exhaust blades 21, and enter the detection cavity from both sides along the exhaust grooves 331 on both sides, and thereby use the thrust of the airflow to drive the detection impeller 31 to rotate in the detection cavity, so that each group of detection sensors 32 is evenly exposed to the gas in different areas, and multiple groups of data are used for comparison to effectively improve the detection accuracy.

[0056] When the linkage shaft 22 rotates, the friction between the first oblique wheel 64 and the second oblique wheel 641 will cause the walking shaft 42 to rotate with the walking wheel 4, so that the driving seat 1 as a whole slides along the surface of the rail, thereby performing gas detection on the entire mine tunnel in real time, improving the detection efficiency, and ensuring the safety in the mine tunnel; in addition, the airflow entering the detection cavity will eventually enter the exhaust pipe 34 along the air guide pipe 35, and then be blown obliquely toward the surface of the rail by the exhaust pipe 34, so as to obtain the forward airflow thrust, assisting the driving seat 1 to move faster, reducing power consumption, and improving detection efficiency. During the rotation of the running wheel 4, the magnetic plate 58 and the magnetic area of ​​the running wheel 4 are attracted to each other. When the two are in the attractive area, the magnetic plate 58 is pulled downward, which first squeezes the gas in the piston chamber 56 and makes the gas move along the blowing pipe 72 along the inclined surface of the top of the shovel plate 7, thereby removing the impurities accumulated on the shovel plate 7. The shovel plate 7 itself is used to clean the surface of the rail to reduce the resistance of the impurities to the rotation of the running wheel 4, so that the driving seat 1 as a whole can move along the surface of the rail. Sliding; secondly, when the magnetic plate 58 moves downward, it will pull the pull rope 553, causing the moving column 55 to slide toward the compressed third spring 552. At this time, the impact plate 551 will move away from the dust filter plate 51. When it leaves the magnetic attraction area, under the rebound action of the third spring 552 and the fourth spring 561, the moving column 55 will quickly reset with the impact plate 551 and collide with the side wall of the dust filter plate 51, causing the dust filter plate 51 to vibrate as a whole, and then shake off the dust particles attached to it, thereby improving the filtering effect of the dust filter plate 51.

[0057] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A gas safety detection device in a pipeline, comprising a drive seat (1), characterized in that: The top of the driving seat (1) is fixedly connected to an air pumping chamber (2), the top of the air pumping chamber (2) is fixed and connected to a detection chamber (3), and further comprises: The air extraction blade (21) is rotatably connected to a linkage shaft (22) on both sides of the inner cavity of the air extraction chamber (2), and the air extraction blade (21) is fixedly connected to the linkage shaft (22). A detection impeller (31) is rotatably connected in the detection chamber (3), and a plurality of detection sensors (32) are fixed at intervals on the blades of the detection impeller (31). A driving unit for simultaneously driving two sets of linkage shafts (22) to rotate is provided in the air extraction chamber (2). The traveling wheel (4) is installed in the driving seat (1). Wherein, a transmission part for driving the running wheel (4) to rotate is provided in the driving seat (1); A dust filter assembly is provided on the air extraction chamber (2) and is used for filtering dust particles in the gas.

2. A gas safety detection device in a pipeline according to claim 1, characterized in that: The driving part comprises a driving motor (23), the driving motor (23) being fixed to the top of the inner cavity of the air extraction chamber (2), the output shaft of the driving motor (23) being connected to the two groups of linkage shafts (22) by means of a pulley group (231), sealing plates (33) being fixedly connected to both sides of the inner cavity of the detection chamber (3), a detection cavity being formed between the two groups of sealing plates (33) and the inner cavity of the detection chamber (3), and the detection impeller (31) being located in the detection cavity, exhaust grooves (331) being staggeredly provided on the sealing plates (33) on both sides, and the exhaust grooves (331) on both sides respectively face the detection impeller (31) from both sides, an exhaust pipe (34) being fixedly connected to the outer wall of the driving seat (1), an air guide pipe (35) being fixedly connected to the outer wall of the detection chamber (3), and two ends of the air guide pipe (35) being respectively connected to the detection cavity and an input end of the exhaust pipe (34).

3. A gas safety detection device in a pipeline according to claim 1, characterized in that: The dust filter assembly comprises a dust filter box (5), the dust filter box (5) is fixed on the air extraction chamber (2), the inner cavity of the dust filter box (5) is fixedly connected to a dust filter plate (51), the outer wall of the dust filter box (5) is provided with air inlet grooves (52) at equal intervals, a ventilation groove (53) is provided between the dust filter box (5) and the air extraction chamber (2), and the bottom of the dust filter box (5) is fixedly connected to a dust discharge sealing plate (54).

4. A gas safety detection device in a pipeline according to claim 1, characterized in that: A signal transmitter (9) is fixedly connected to the top of the gas extraction chamber (2), and the signal transmitter (9) is electrically connected to the detection sensor (32). The signal transmitter (9) is used to mark and report abnormal gas detection areas.

5. The gas safety detection device in a pipeline according to claim 1, characterized in that: A driving chamber (41) is provided on both sides of the driving seat (1), a walking shaft (42) is installed between the two groups of the driving chambers (41), the walking wheel (4) is fixed on the middle outer wall of the walking shaft (42), and the two ends of the walking shaft (42) are fitted and slid with the inner walls of the driving chambers (41) on both sides; The driving chamber (41) is slidably connected to a limiting slide (43), the limiting slide (43) is in contact with the inner wall of the driving chamber (41), a first spring (44) is fixedly connected between the top of the limiting slide (43) and the top of the driving chamber (41), and the walking shaft (42) passes through the two groups of limiting slides (43) and is rotatably connected thereto.

6. A gas safety detection device in a pipeline according to claim 5, characterized in that: The transmission part includes a transmission cylinder (6), a limiting sliding groove (61) is provided in the transmission cylinder (6), the bottom end of the linkage shaft (22) passes through the transmission cylinder (6) and is fixedly connected to the limiting sliding block (62), a limiting plate (63) is fixedly connected to the outer wall of the linkage shaft (22), a second spring (631) is fixedly connected between the limiting plate (63) and the top of the transmission cylinder (6), a first oblique wheel (64) is fixedly connected to the bottom of the transmission cylinder (6), a second oblique wheel (641) is fixedly connected to the outer wall of the traveling shaft (42) located in the driving chamber (41), and the first oblique wheel (64) and the second oblique wheel (641) are in contact with each other.

7. A gas safety detection device in a pipeline according to claim 3, characterized in that: A movable column (55) is slidably connected to the partition between the dust filter box (5) and the air extraction chamber (2); the end of the movable column (55) located in the dust filter box (5) is fixedly connected to the impact plate (551); a third spring (552) is sleeved on the outer wall of the movable column (55) located in the dust filter box (5); the two ends of the third spring (552) are respectively fixed to the impact plate (551) and the inner wall of the dust filter box (5); the end of the movable column (55) located in the air extraction chamber (2) is fixedly connected to the pull rope (553); a piston chamber (551) is provided between the dust filter box (5) and the air extraction chamber (2); 56), a piston plate (57) is slidably connected in the piston chamber (56), a fourth spring (561) is fixedly connected between the bottom of the piston plate (57) and the piston chamber (56), the other end of the pull rope (553) is fixed on the top of the piston plate (57), the bottom of the piston plate (57) is fixedly connected to a lifting plate (571), the bottom end of the lifting plate (571) passes through the top of the walking wheel (4) and is fixedly connected to a magnetic plate (58), a magnetic area is provided on the outer wall of the walking wheel (4), and the magnetic plate (58) and the magnetic area of ​​the walking wheel (4) are magnetically attracted to each other.

8. A gas safety detection device in a pipeline according to claim 7, characterized in that: A shovel plate (7) is rotatably connected to the outer wall of the drive seat (1), a counterweight (71) is fixedly connected to the side wall of the shovel plate (7), and an air blowing pipe (72) is fixedly connected to the outer wall of the drive seat (1), the input end of the air blowing pipe (72) is connected to the inner cavity of the piston chamber (56), and the output end of the air blowing pipe (72) is toward the top of the shovel plate (7).

9. The gas safety detection device in a pipeline according to claim 1, characterized in that: Both sides of the bottom of the driving seat (1) are fixedly connected to electric push rods (8), the telescopic ends of the electric push rods (8) are fixedly connected to mounting plates (81), and both sides of the inner cavity of the mounting plate (81) are rotatably connected to limiting rotating wheels (82).

10. A method for detecting gas safety in a pipeline, using a device for detecting gas safety in a pipeline according to any one of claims 1 to 9, characterized in that: Here are the steps: Step 1: Fix the drive seat (1) as a whole on the rails in the mine tunnel: Step 2: The driving seat (1) is moved continuously along the rails, and the air flow in the mine is continuously drawn into the detection chamber (3) for real-time gas detection: Step 3: Mark and report the abnormal gas detection area: Step 4: Filter the continuously extracted airflow to reduce the impact of particulate matter in the airflow on the detection.

Images