Monitoring and early warning device for gas emission in coal mine tunnel

Abstract

The invention discloses a monitoring and early warning device for gas emission in a coal mine tunnel, which belongs to the technical field of coal mining safety and comprises a ground control center, a plurality of fixed gas concentration sensors fixed on the inner wall surface of the coal mine tunnel at equal intervals, and a plurality of fixed audible and visual alarms fixedly connected to the inner wall surface of the coal mine tunnel. The plurality of fixed audible and visual alarms and the plurality of fixed gas concentration sensors are arranged in a one-to-one correspondence manner; the fixed gas concentration sensors and the fixed audible and visual alarms are electrically connected with the ground control center; the mobile monitoring mechanism comprises a robot vehicle body, a height adjusting assembly is arranged on the robot vehicle body, a mobile gas concentration sensor, a mobile audible and visual alarm and a positioner are arranged at the output end of the height adjusting assembly, and the mobile gas concentration sensor, the mobile audible and visual alarm and the positioner are all electrically connected with the ground control center. According to the invention, the gas concentration in each area in the coal mine tunnel can be timely and effectively monitored, the occurrence of accidents is reduced, and the working safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal mining safety, and in particular to a gas outburst monitoring and early warning device in a coal mine tunnel. Background Art

[0002] Gas outburst is a common phenomenon in coal mining, which is mainly manifested by gas flowing into tunnels and working faces through cracks and holes in coal seams. Gas outburst will cause the gas concentration in the mine to increase. When the gas accumulation reaches a certain concentration, it may cause serious accidents such as explosions or fires, posing a threat to the lives and safety of miners.

[0003] Therefore, gas sensors are usually installed in various areas of the tunnel to timely measure the gas concentration in the tunnel to prevent gas explosion or combustion accidents. However, in the prior art, the gas sensors in each area are fixed in one position and can only monitor the gas concentration in the fixed position. The monitoring range is not comprehensive, and thus accurate and timely warning cannot be achieved.

[0004] Therefore, a gas outburst monitoring and early warning device in coal mine tunnels is proposed. Summary of the invention

[0005] The present invention aims at solving the above problems, makes up for the deficiencies of the prior art, and provides a gas outburst monitoring and early warning device in a coal mine tunnel.

[0006] To achieve the above object, the present invention adopts the following technical solution:

[0007] The present invention provides a coal mine tunnel gas outburst monitoring and early warning device, comprising: a ground control center, a plurality of fixed gas concentration sensors, and a mobile monitoring mechanism;

[0008] A plurality of the fixed gas concentration sensors are fixed at equal intervals on the inner wall surface of the coal mine tunnel, a plurality of fixed sound and light alarms are fixedly connected to the inner wall surface of the coal mine tunnel, a plurality of the fixed sound and light alarms are arranged in one-to-one correspondence with a plurality of the fixed gas concentration sensors, and the fixed gas concentration sensors and the fixed sound and light alarms are electrically connected to the ground control center;

[0009] The mobile monitoring mechanism includes a robot body, on which a height adjustment component is provided. The output end of the height adjustment component is provided with a mobile gas concentration sensor, a mobile sound and light alarm and a locator. The mobile gas concentration sensor, the mobile sound and light alarm and the locator are all electrically connected to the ground control center.

[0010] Preferably, the height adjustment component includes a bracket arranged on the robot body, the bracket is rotatably connected to a first rotating shaft, a first motor is fixedly connected to the bracket, the output shaft of the first motor is fixedly connected to the first rotating shaft, an adaptive support rod is fixedly connected to the first rotating shaft, and the end of the adaptive support rod is provided with the mobile gas concentration sensor, the mobile sound and light alarm and the locator.

[0011] Preferably, the adaptive support rod includes a first connecting rod fixedly connected to the first rotating shaft, a sliding groove is provided at one end of the first connecting rod away from the first rotating shaft, a second connecting rod is slidably connected in the sliding groove, an end of the second connecting rod extends out of the sliding groove and is fixedly connected to the mobile gas concentration sensor, the mobile sound and light alarm and the locator, and a spring is fixedly connected between the sliding groove and the second connecting rod.

[0012] Preferably, a roller is rotatably connected to the end surface of the second connecting rod extending out of the slide slot, and the mobile gas concentration sensor, the mobile sound and light alarm and the positioner are fixedly connected to the side wall of the second connecting rod extending out of the slide slot.

[0013] Preferably, a rotating assembly is arranged between the robot body and the bracket, and the rotating assembly includes a groove opened on the top of the robot body, a second motor is fixedly connected in the groove, a turntable is connected to the output shaft of the second motor through a transmission assembly, the turntable is located outside the groove, and the bracket is fixedly connected to the top of the turntable.

[0014] Preferably, the transmission assembly includes a small gear fixedly connected to the output shaft of the second motor, a large gear fixedly connected to the bottom of the turntable, a second rotating shaft fixedly connected to the large gear, the second rotating shaft is rotatably connected to the groove, and the large gear meshes with the small gear.

[0015] Preferably, the inner wall surface of the coal mine tunnel is provided with a plurality of air outlet channels, a ventilation fan is fixedly connected in the air outlet channel, the fixed gas concentration sensor is located between two adjacent air outlet channels, and the fixed sound and light alarm is arranged close to the fixed gas concentration sensor.

[0016] Preferably, the ground control center is electrically connected to the ventilation fan, and the ground control center is used to control the opening and closing and rotation speed of the ventilation motor.

[0017] Beneficial effects of the present invention:

[0018] 1. The present invention can timely and effectively monitor the gas concentration in various areas of the coal mine tunnel through the combined use of fixed gas concentration sensors and mobile concentration sensors. The ground control center collects and analyzes various monitoring data. When the warning range is reached, not only an early warning is given to the ground, but also the corresponding fixed sound and light alarm or mobile sound and light alarm is controlled to give sound and light alarm to warn the workers in the mine; thereby, the ground and aboveground personnel can take corresponding countermeasures in time, reduce the occurrence of accidents, and improve work safety.

[0019] 2. In summary, the technical solutions described above solve the problem of incomplete monitoring of coal mine tunnels. It can not only realize comprehensive monitoring of coal mine tunnels but also provide accurate and timely early warning. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic structural diagram of a gas outburst monitoring and early warning device in a coal mine tunnel according to the present invention;

[0022] Figure 2 It is a structural schematic diagram of a mobile monitoring mechanism in a gas outburst monitoring and early warning device in a coal mine tunnel of the present invention;

[0023] Figure 3 An exploded diagram of a rotary assembly in a gas outburst monitoring and early warning device in a coal mine tunnel of the present invention;

[0024] Figure 4 The present invention is a schematic structural diagram of an adaptive support rod in a gas outburst monitoring and early warning device in a coal mine tunnel.

[0025] Markings in the figure: 1. Fixed gas concentration sensor; 2. Fixed sound and light alarm; 3. Robot body; 4. Mobile gas concentration sensor; 5. Mobile sound and light alarm; 6. Positioner; 7. Bracket; 8. First motor; 9. First connecting rod; 10. Slide; 11. Second connecting rod; 12. Spring; 13. Roller; 14. Groove; 15. Second motor; 16. Turntable; 17. Small gear; 18. Large gear; 19. Second rotating shaft; 20. Air outlet channel; 21. Coal mine tunnel. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] Reference Figure 1-Figure 4 , the present invention provides a coal mine tunnel gas outburst monitoring and early warning device, including: a ground control center, a plurality of fixed gas concentration sensors 1, and a mobile monitoring mechanism;

[0028] A plurality of fixed gas concentration sensors 1 are fixed at equal intervals on the inner wall surface of the coal mine tunnel 21. A plurality of fixed sound and light alarms 2 are fixedly connected to the inner wall surface of the coal mine tunnel 21. The plurality of fixed sound and light alarms 2 are arranged one by one correspondingly with the plurality of fixed gas concentration sensors 1. The fixed gas concentration sensors 1 and the fixed sound and light alarms 2 are electrically connected to the ground control center.

[0029] The mobile monitoring mechanism includes a robot body 3, on which a height adjustment component is arranged, and at the output end of the height adjustment component a mobile gas concentration sensor 4, a mobile sound and light alarm 5 and a locator 6 are arranged, and the mobile gas concentration sensor 4, the mobile sound and light alarm 5 and the locator 6 are all electrically connected to the ground control center.

[0030] The present invention discloses a coal mine tunnel gas emission monitoring and early warning device, which belongs to the field of coal mine mining safety technology. The present invention uses the above-mentioned fixed gas concentration sensor 1, fixed sound and light alarm 2 and mobile gas concentration sensor 4, mobile sound and light alarm 5 and positioner 6, which are electrically connected to the ground control center respectively, and then combined with the robot body 3 and the height adjustment component, to form a fixed and mobile monitoring mode, which can timely and effectively monitor the gas concentration in each area of ​​the coal mine tunnel 21, reduce the occurrence of accidents and improve work safety.

[0031] The ground control center is responsible for collecting, storing and analyzing data from various sensors generated during the coal mine production process; the ground control center conducts real-time communication and data exchange with various underground monitoring equipment through a wireless communication system, and processes and alarms at the first time to ensure coordination and cooperation between the underground and the ground.

[0032] The robot body 3 mainly includes functions such as autonomous driving and intelligent interaction. By presetting the running routes of different modes of the robot body 3 in the control program, the robot body 3 can realize driving on different routes in different modes.

[0033] When in use, since several fixed gas concentration sensors 1 are arranged at equal intervals in the coal mine tunnel 21, the coal mine tunnel 21 is divided into several monitoring areas. Each fixed gas concentration sensor 1 is responsible for monitoring the gas concentration in its respective area and transmitting the monitoring information to the ground control center.

[0034] The present invention also provides a mobile monitoring mechanism. The robot body 3 moves along the inspection route for inspection. The height of the mobile gas concentration sensor 4 is adjusted by the height adjustment component, so that the mobile gas concentration sensor 4 can perform timely mobile monitoring of the gas concentration at various positions in the tunnel and transmit the information to the ground control center.

[0035] The ground control center has a preset early warning range, which can be adjusted according to the actual situation of the coal mine tunnel 21. When the data monitored by the mobile gas concentration sensor 4 reaches the preset early warning range, the ground control center will issue an early warning and control the mobile sound and light alarm 5 to alarm, thereby alerting the workers in the mine; the ground control center locates the position of the alarm through the locator 6, so that the ground and aboveground personnel can take corresponding countermeasures in time.

[0036] When the data monitored by a fixed gas concentration sensor 1 reaches the preset warning range, the ground control center issues a warning and controls the fixed sound and light alarm 2 in the corresponding area to sound an alarm, thereby alerting the workers in the mine; at the same time, the robot body 3 moves to the fixed gas concentration sensor 1 that alarms, and conducts a secondary detection and determination of the gas concentration there, so that the ground and aboveground personnel can take corresponding countermeasures in time.

[0037] During the inspection of the robot body 3, the gas concentration at the fixed gas concentration sensor 1 will be monitored. When the measured gas data deviates from the data measured by the fixed gas concentration sensor 1, and the deviation value exceeds a reasonable range, the ground control center will issue a fault warning, so that relevant personnel can promptly and accurately inspect and repair the fixed gas concentration sensor 1 at the relevant position.

[0038] In some optional embodiments, the height adjustment component includes a bracket 7 arranged on the robot body 3, the bracket 7 is rotatably connected to a first rotating shaft, a first motor 8 is fixedly connected to the bracket 7, the output shaft of the first motor 8 is fixedly connected to the first rotating shaft, an adaptive support rod is fixedly connected to the first rotating shaft, and a mobile gas concentration sensor 4, a mobile sound and light alarm 5 and a locator 6 are arranged at the end of the adaptive support rod.

[0039] In some optional embodiments, the adaptive support rod includes a first connecting rod 9 fixedly connected to a first rotating shaft, a slide groove 10 is provided at one end of the first connecting rod 9 away from the first rotating shaft, a second connecting rod 11 is slidably connected in the slide groove 10, an end of the second connecting rod 11 extends out of the slide groove 10 and is fixedly connected to a mobile gas concentration sensor 4, a mobile sound and light alarm 5 and a locator 6, and a spring 12 is fixedly connected between the slide groove 10 and the second connecting rod 11.

[0040] The first motor 8 drives the first rotating shaft to rotate, thereby driving the first connecting rod 9 to rotate, so as to adjust the height of the mobile gas concentration sensor 4, so that the mobile gas concentration sensor 4 can detect the gas concentration at different height positions.

[0041] In some optional embodiments, a roller 13 is rotatably connected to the end surface of the second connecting rod 11 extending outside the slide slot 10, and the mobile gas concentration sensor 4, the mobile sound and light alarm 5 and the positioner 6 are fixedly connected to the side wall of the end of the second connecting rod 11 extending outside the slide slot 10.

[0042] In some optional embodiments, a rotating assembly is arranged between the robot body 3 and the bracket 7, and the rotating assembly includes a groove 14 opened on the top of the robot body 3, and a second motor 15 is fixedly connected in the groove 14. A turntable 16 is connected to the output shaft of the second motor 15 through a transmission assembly. The turntable 16 is located outside the groove 14, and the bracket 7 is fixedly connected to the top of the turntable 16.

[0043] In some optional embodiments, the transmission assembly includes a small gear 17 fixedly connected to the output shaft of the second motor 15, a large gear 18 fixedly connected to the bottom of the turntable 16, a second rotating shaft 19 fixedly connected to the large gear 18, the second rotating shaft 19 is rotatably connected to the groove 14, and the large gear 18 is meshed with the small gear 17.

[0044] When the mobile gas concentration sensor 4 detects that the gas concentration in a certain area has reached the warning value, the mobile sound and light alarm 5 will sound an alarm, and at the same time, the robot body 3 is adjusted from the inspection mode to the detection mode, that is, the second motor 15 drives the turntable 16 to rotate and cooperates with the movement of the robot body 3 to make the roller 13 close to the wall of the tunnel. At this time, the first connecting rod 9 forms a certain angle with the wall of the tunnel. The robot body 3 moves back and forth in this area, driving the roller 13 to roll against the wall. During the rolling process, when it encounters an uneven position, the spring 12 drives the roller 13 to adjust adaptively to avoid the roller 13 from rolling. The roller 13 collides hard with the inner wall surface. During the rolling process of the roller 13 against the wall, the mobile gas concentration sensor 4 can always be close to the tunnel wall surface for concentration detection. When there is gas gushing out from the tunnel wall surface, the concentration of gas accumulated here is high, so it can be detected in time by the mobile gas concentration sensor 4, and the information is transmitted to the ground control center. The ground control center marks the position where gas gushing may occur according to the detected gas concentration data and the information of the locator 6, so as to lock the target position in time and effectively, and notify the relevant personnel to take measures such as gas extraction or ventilation.

[0045] In some optional embodiments, a plurality of air outlet channels 20 are provided on the inner wall surface of the coal mine tunnel 21, a ventilation fan is fixedly connected in the air outlet channel 20, a fixed gas concentration sensor 1 is located between two adjacent air outlet channels 20, and a fixed sound and light alarm 2 is arranged close to the fixed gas concentration sensor 1.

[0046] In some optional embodiments, the ground control center is electrically connected to the ventilation fan, and the ground control center is used to control the opening and closing and speed of the ventilation motor.

[0047] In order to ensure the ventilation of the coal mine tunnel 21, a ventilation hole is set on the coal mine tunnel 21 to let the fresh air from the outside into the tunnel, and the air in the tunnel is discharged to the outside of the tunnel through the return air tunnel to realize the flow of air. The fixed gas concentration sensor 1 is set between two adjacent air outlet channels 20, that is, it is set in an area with relatively weak ventilation, so as to detect the concentration of the most dangerous area; when it is detected that the gas concentration in a certain area exceeds the warning value, the ground control center will control the ventilation fan in the air outlet channel 20 at the corresponding position to open a larger speed, thereby improving the ventilation in this area and improving the diffusion of gas. Subsequently, relevant personnel will extract and discharge the gas in the dangerous area.

[0048] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A gas outburst monitoring and early warning device in a coal mine tunnel, characterized in that: include: Ground control center, several fixed gas concentration sensors (1), and mobile monitoring mechanism; A plurality of fixed gas concentration sensors (1) are fixed at equal intervals on the inner wall surface of a coal mine tunnel (21); a plurality of fixed sound and light alarms (2) are fixedly connected to the inner wall surface of the coal mine tunnel (21); the plurality of fixed sound and light alarms (2) are arranged in a one-to-one correspondence with the plurality of fixed gas concentration sensors (1); the fixed gas concentration sensors (1) and the fixed sound and light alarms (2) are both electrically connected to the ground control center; The mobile monitoring mechanism comprises a robot body (3), the robot body (3) is provided with a height adjustment component, the output end of the height adjustment component is provided with a mobile gas concentration sensor (4), a mobile sound and light alarm (5) and a locator (6), and the mobile gas concentration sensor (4), the mobile sound and light alarm (5) and the locator (6) are all electrically connected to the ground control center.

2. A coal mine tunnel gas outburst monitoring and early warning device according to claim 1, characterized in that: The height adjustment component comprises a bracket (7) arranged on the robot body (3), the bracket (7) is rotatably connected to a first rotating shaft, the bracket (7) is fixedly connected to a first motor (8), the output shaft of the first motor (8) is fixedly connected to the first rotating shaft, the first rotating shaft is fixedly connected to an adaptive support rod, and the end of the adaptive support rod is provided with the mobile gas concentration sensor (4), the mobile sound and light alarm (5) and the positioner (6).

3. A coal mine tunnel gas outburst monitoring and early warning device according to claim 2, characterized in that: The adaptive support rod comprises a first connecting rod (9) fixedly connected to the first rotating shaft, a sliding groove (10) is provided at one end of the first connecting rod (9) away from the first rotating shaft, a second connecting rod (11) is slidably connected in the sliding groove (10), an end of the second connecting rod (11) extends out of the sliding groove (10) and is fixedly connected to the mobile gas concentration sensor (4), the mobile sound and light alarm (5) and the positioner (6), and a spring (12) is fixedly connected between the sliding groove (10) and the second connecting rod (11).

4. A coal mine tunnel gas outburst monitoring and early warning device according to claim 3, characterized in that: A roller (13) is rotatably connected to the end surface of the second connecting rod (11) extending out of the slide groove (10), and the mobile gas concentration sensor (4), the mobile sound and light alarm (5) and the positioner (6) are fixedly connected to the side wall of the second connecting rod (11) extending out of the slide groove (10).

5. The device for monitoring and early warning of gas outburst in coal mine tunnels according to claim 2 is characterized in that: A slewing assembly is provided between the robot body (3) and the bracket (7), the slewing assembly comprising a groove (14) provided on the top of the robot body (3), a second motor (15) being fixedly connected in the groove (14), a turntable (16) being connected to the output shaft of the second motor (15) via a transmission assembly, the turntable (16) being located outside the groove (14), and the bracket (7) being fixedly connected to the top of the turntable (16).

6. A coal mine tunnel gas outburst monitoring and early warning device according to claim 5, characterized in that: The transmission assembly comprises a small gear (17) fixedly connected to the output shaft of the second motor (15); a large gear (18) is fixedly connected to the bottom of the turntable (16); a second rotating shaft (19) is fixedly connected to the large gear (18); the second rotating shaft (19) is rotatably connected to the groove (14); and the large gear (18) is meshed with the small gear (17).

7. The device for monitoring and early warning of gas outburst in coal mine tunnels according to claim 1, characterized in that: The inner wall surface of the coal mine tunnel (21) is provided with a plurality of air outlet channels (20), a ventilation fan is fixedly connected in the air outlet channels (20), the fixed gas concentration sensor (1) is located between two adjacent air outlet channels (20), and the fixed sound and light alarm (2) is arranged close to the fixed gas concentration sensor (1).

8. A coal mine tunnel gas outburst monitoring and early warning device according to claim 7, characterized in that: The ground control center is electrically connected to the ventilation fan, and the ground control center is used to control the opening and closing and the rotation speed of the ventilation motor.

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