A coal mine fire smoke monitoring device

Abstract

The invention discloses a coal mine fire smoke monitoring device, which relates to the technical field of smoke monitoring, and comprises a base, a swivel seat is rotatably arranged at the bottom of the base, the swivel seat has a deflection end, and the deflection end is connected to a monitoring component; the monitoring component comprises: a base cylinder, one side of which is an air inlet, the other side of which is an air outlet, and a detector is installed at the air outlet; a motor, which is fixed to the middle position of the base cylinder by a support rod, and a fan blade is fixed to the output end of the motor; a plurality of circumferentially spaced blocking leaves, a shaft body is connected through the middle part, one end of the shaft body is rotatably connected to the motor, and the other end of the shaft body is rotatably connected to the base cylinder; a plurality of circumferentially spaced exhaust holes, the exhaust holes are opened on the side of the base cylinder and are located between the fan blades and the sealing leaves; the gas flow entering the detector can be controlled by adjusting the angle of the sealing leaves, random inspection is realized, and it is also ensured that it is within the design flow range of the detector.

Description

Technical Field

[0001] The invention relates to the technical field of smoke monitoring, in particular to a coal mine fire smoke monitoring device. Background Art

[0002] In coal mine production operations, fire is an extremely serious safety hazard, which not only threatens the lives of miners, but also may cause huge property losses and environmental damage. Therefore, timely and accurate monitoring of smoke conditions in coal mines is of great significance for fire prevention and control. However, the coal mine environment is complex and changeable, and parameters such as smoke concentration, airflow velocity and temperature are difficult to predict, which brings certain difficulties to smoke monitoring.

[0003] Traditional coal mine smoke monitoring methods often rely on manual inspections or fixed-point monitoring, which have many shortcomings. Among them, manual inspections are inefficient and difficult to detect fire hazards in a timely manner; while fixed-point monitoring may lead to missed or false alarms due to limited monitoring range or environmental interference.

[0004] In addition, when a fire occurs, it is often accompanied by the release of a large amount of harmful gases, among which carbon monoxide and carbon dioxide are the two main indicator gases. Therefore, accurate monitoring of the concentration of these two gases is crucial to timely discover fire hazards. Based on this, carbon monoxide alarms and carbon dioxide sensors are often used. However, carbon monoxide alarms and carbon dioxide sensors face a common challenge in design and application: they each have a specific design flow range. This limitation is to ensure that the sensor can accurately measure and respond to the concentration of the target gas under optimal working conditions. The setting of the design flow range is based on the sensitivity and processing capacity of the internal components of the sensor. Gas flow exceeding this range may cause the sensor to be unable to effectively handle all incoming gases, thereby affecting the accuracy of the measurement results.

[0005] Specifically, when too much gas is introduced into the sensor in a short period of time, that is, the flow rate exceeds its design range, the sensor may not be able to timely and accurately analyze all incoming gas molecules, resulting in some gases not being fully detected or processed. In this case, the concentration value output by the sensor may not truly reflect the gas concentration in the actual environment, thereby causing the risk of false alarms or missed alarms.

[0006] Therefore, it is necessary to provide a coal mine fire smoke monitoring device to solve the above problems. Summary of the invention

[0007] To solve the above problems, the present invention provides the following technical solutions: A coal mine fire smoke monitoring device, comprising a base, a swivel seat is rotatably arranged at the bottom of the base, the swivel seat has a deflection end, and the deflection end is connected to a monitoring component so as to adjust the pitch angle of the monitoring component;

[0008] Wherein, the monitoring component includes:

[0009] A base cylinder, one side of which is an air inlet and the other side is an air outlet, a detector is installed at the air outlet, and a protective net is installed at the air inlet;

[0010] A motor, which is fixed to the middle of the base tube by a support rod, and a fan blade is fixed to the output end of the motor;

[0011] A plurality of circumferentially spaced plugging leaves, wherein a shaft body is connected through the middle thereof, one end of the shaft body is connected to the motor for rotation, and the other end of the shaft body is connected to the base cylinder for rotation, and there are gaps between two adjacent plugging leaves, between the plugging leaves and the motor, and between the plugging leaves and the base cylinder;

[0012] A plurality of exhaust holes are distributed at intervals in the circumferential direction, wherein the exhaust holes are opened on the side of the base tube and are located between the fan blades and the blocking blades.

[0013] Further, as a preference, a side tube corresponding to the shaft body is fixed to the outside of the base tube, the shaft body is rotatably connected to the side tube, the shaft body extends out of the side tube and is connected to a rotating arm, the other end of the rotating arm is hinged with a lever, the end of the lever away from the rotating arm is hinged with a connecting rod, and a plurality of connecting rods are commonly and fixedly connected to a rotating ring;

[0014] The outside of the base cylinder is also rotatably provided with a plurality of rotating wheels for supporting and rotatably connecting the rotating ring.

[0015] Further, as a preference, an elastic sealing strip is fixed to the edge of each of the sealing leaves, so as to fill the gap between two adjacent sealing leaves, between the sealing leaf and the motor, and between the sealing leaf and the base tube.

[0016] Further, preferably, each of the exhaust holes is embedded with an auxiliary flow control component, and the auxiliary flow control component includes a capture tube, which is an inclined horn tube, and the capture tube is embedded in the base tube, and one side opening of the capture tube is larger than the other side opening.

[0017] Further, as a preference, the capture tube extends away from one side of the base tube and forms an extension tube, a mounting ring is fixed to the outside of the extension tube, a plurality of evenly distributed springs are fixed on the mounting ring, the other ends of the plurality of springs are commonly connected to a movable disk, a conical tube is fixed to one side of the movable disk close to the extension tube, and the tip of the conical tube faces the extension tube.

[0018] Furthermore, as a preference, the cone is also connected to a pull rope, and the pull rope passes through the capture cylinder and is connected to the corresponding blocking leaf.

[0019] Further, preferably, the detector comprises:

[0020] An installation bin is fixed at the air outlet of the base tube;

[0021] A detector body, which is fixedly embedded in the middle of the installation bin;

[0022] A plurality of through holes are provided on the installation compartment, and the through holes are distributed around the detector body.

[0023] Further, preferably, the base is movably arranged on a top rail, and the moving speed range is 20m / min-40m / min, and the top rail is distributed along the direction of the tunnel.

[0024] Compared with the prior art, the present invention provides a coal mine fire smoke monitoring device, which has the following beneficial effects:

[0025] With the cooperation of the fan blades and the blocking blades, the inhaled gas is divided into two parts; one part of the gas flows through the blocking blades and continues to flow to the detector; the other part of the gas is discharged from the exhaust holes on the side of the base tube, realizing the random inspection of the gas. This design not only ensures the effectiveness of the detection, but also reduces the amount of gas to be processed, improves the detection efficiency, and ensures that the gas flow rate is within the design flow range of the detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the installation structure of a coal mine fire smoke monitoring device;

[0027] Figure 2 It is a three-dimensional structural schematic diagram of a coal mine fire smoke monitoring device;

[0028] Figure 3 It is a schematic diagram of the main structure of a coal mine fire smoke monitoring device;

[0029] Figure 4 A half-section schematic diagram of a monitoring component in a coal mine fire smoke monitoring device;

[0030] Figure 5 It is a structural schematic diagram of an auxiliary flow control component in a coal mine fire smoke monitoring device;

[0031] Figure 6 It is a structural schematic diagram of a detector in a coal mine fire smoke monitoring device;

[0032] In the figure: 1. base; 2. swivel seat; 3. monitoring component; 4. auxiliary flow control component; 5. protection net; 6. top rail; 31. base cylinder; 32. motor; 33. fan blade; 34. support rod; 35. blocking leaf; 36. detector; 361. installation bin; 362. detector body; 363. through hole; 37. side cylinder; 38. rotating arm; 39. lever; 310. connecting rod; 311. swivel; 312. rotating wheel; 41. capture cylinder; 42. extension cylinder; 43. installation ring; 44. moving disk; 45. cone cylinder; 46. spring; 47. pull rope. DETAILED DESCRIPTION

[0033] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned description of the drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, which is merely a way of distinguishing the objects of the same attributes when describing them in the embodiments of the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0034] Please refer to Figure 1-Figure 6 In an embodiment of the present invention, a coal mine fire smoke monitoring device is provided, comprising a base 1, a rotating seat 2 is rotatably arranged at the bottom thereof, the rotating seat 2 has a deflection end, and the deflection end is connected to a monitoring component 3 so as to adjust the pitch angle of the monitoring component 3;

[0035] That is to say, in this embodiment, the monitoring component 3 connected to the swivel base 2 at the bottom of the base 1 and the deflection end is used to achieve flexible adjustment of the pitch angle of the monitoring component 3, so that the monitoring direction and range can be quickly adjusted as needed, thereby enhancing the adaptability and flexibility of the device and ensuring effective monitoring under different coal mine environmental conditions.

[0036] Wherein, the monitoring component 3 includes:

[0037] The base tube 31 has an air inlet on one side and an air outlet on the other side. A detector 36 is installed at the air outlet, and a protective net 5 is installed at the air inlet.

[0038] A motor 32 is fixed to the middle of the base tube 31 by a support rod 34, and a fan blade 33 is fixed to the output end of the motor 32;

[0039] A plurality of circumferentially spaced plugging leaves 35 are provided, wherein a shaft body is connected through the middle thereof, one end of the shaft body is rotationally connected to the motor 32, and the other end of the shaft body is rotationally connected to the base cylinder 31, and there are gaps between two adjacent plugging leaves 35, between the plugging leaves 35 and the motor 32, and between the plugging leaves 35 and the base cylinder 31;

[0040] A plurality of exhaust holes are circumferentially spaced apart and are provided on the side of the base tube 31 and between the fan blades 33 and the blocking blades 35 .

[0041] The implementation includes the following steps:

[0042] When starting, the motor 32 is activated first, driving the fan blade 33 to start rotating. The rotation of the fan blade 33 generates an inward airflow, which sucks the gas in the coal mine through the air inlet of the base tube 31.

[0043] By adjusting the angle of the blocking leaf 35 , the flow rate of the gas passing through the detector 36 can be adjusted to ensure that the gas flow rate is within the designed flow rate range of the detector 36 .

[0044] And for some detectors 36 with interception nets, this method can also increase their service life.

[0045] With the cooperation of the fan blade 33 and the blocking blade 35, the inhaled gas is divided into two parts; one part of the gas flows through the blocking blade 35 and continues to flow to the detector 36; the other part of the gas is discharged from the exhaust hole on the side of the base tube 31, realizing the random inspection of the gas. At the same time, since the sample inspected is representative, the test results can still accurately reflect the overall situation of the gas. Therefore, this method not only ensures the effectiveness of the detection, but also reduces the amount of gas processed and improves the detection efficiency.

[0046] The detector 36 is a sensor specially designed to detect smoke, carbon monoxide, carbon dioxide or other harmful gases. It analyzes the composition and concentration of the gas and transmits the result to the monitoring system or the operator.

[0047] If the gas concentration detected by the detector 36 exceeds a preset safety threshold, an alarm mechanism is triggered, which may include emitting a sound, light signal, or sending an alarm message to relevant personnel via a network.

[0048] It should also be explained that the fan blades 33 rotate under the drive of the motor 32, generating an inward airflow to draw the gas in the coal mine into the base tube 31. The rotation speed of the fan blades 33 determines the wind speed generated, which in turn affects the speed and intensity of the gas flow.

[0049] For example, when the wind speed generated by the fan blades 33 is faster, it means that more gas is quickly sucked into the base tube 31. At this time, in order to ensure that the detector 36 always works within its designed flow range, the opening (rotation angle) of the blocking leaf 35 needs to be adjusted accordingly. Specifically, reducing the opening of the blocking leaf 35 can limit the gas flow rate passing through, prevent excessive gas from rushing into the detector 36, thereby avoiding the problem of overloading the detector 36 or inaccurate measurement.

[0050] In actual operation, the rotation speed of the fan blades 33 and the opening of the blocking blades 35 need to be dynamically adjusted according to the actual conditions of the coal mine environment. This adjustment can be automatic, for example, through feedback control of parameters such as gas concentration and wind speed monitored by the detector 36; or it can be manual, for example, by the operator based on experience or instructions.

[0051] That is to say, in this embodiment, through the synergistic effect of the fan blades 33 and the blocking blades 35, the detection efficiency and accuracy can be improved under the premise of ensuring the normal operation of the detector 36. The fast wind speed can accelerate the flow and diffusion of the gas, so that the detector 36 can respond to the changes in the gas more quickly; and the appropriate opening of the blocking blades 35 can ensure that the detector 36 always works within its designed flow range, reducing the measurement deviation.

[0052] In this embodiment, a side tube 37 corresponding to the shaft body is fixed on the outside of the base tube 31, and the shaft body is rotatably connected to the side tube 37. The shaft body extends out of the side tube 37 and is connected to a rotating arm 38. The other end of the rotating arm 38 is hinged with a lever 39, and the end of the lever 39 away from the rotating arm 38 is hinged with a connecting rod 310. A plurality of connecting rods 310 are commonly and fixedly connected to a rotating ring 311. A plurality of rotating wheels 312 are also rotatably arranged on the outside of the base tube 31 for supporting and rotatably connecting the rotating ring 311, wherein a stepping motor for driving one of the rotating wheels 312 to rotate is also fixed on the outside of the base tube 31.

[0053] When the stepper motor is started, it will directly drive the rotating wheel 312 connected to it to rotate. The rotating wheel 312 driven by the stepper motor starts to rotate and rotates to the rotating arm 38 connected to it. During the rotation process, the rotating arm 38 drives the lever 39 connected to it to swing, and the swing of the lever 39 can drive the connecting rod 310 and the rotating ring 311 to move. Since all the connecting rods 310 are fixed on the rotating ring 311, when the rotating ring 311 rotates, multiple connecting rods 310 and rotating arms 38 will move synchronously, thereby driving the shaft bodies and blocking leaves 35 connected to them to rotate, so that multiple blocking leaves 35 are synchronously deflected by the same angle.

[0054] In addition, an elastic sealing strip is fixed to the edge of each of the sealing leaves 35 to fill the gap between two adjacent sealing leaves 35 , between the sealing leaf 35 and the motor 32 , and between the sealing leaf 35 and the base tube 31 .

[0055] It needs to be explained that the purpose of the gaps between two adjacent sealing leaves 35, between the sealing leaves 35 and the motor 32, and between the sealing leaves 35 and the base tube 31 is that when the sealing leaves 35 are deflected, no interference will occur between the two adjacent sealing leaves 35, between the sealing leaves 35 and the motor 32, and between the sealing leaves 35 and the base tube 31. An elastic sealing strip is fixed to the edge of each sealing leaf 35 to make up for the gap between the two adjacent sealing leaves 35, between the sealing leaves 35 and the motor 32, and between the sealing leaves 35 and the base tube 31, while improving the overall sealing performance. At this time, even if interference occurs between the two adjacent sealing leaves 35, between the sealing leaves 35 and the motor 32, and between the sealing leaves 35 and the base tube 31, the elastic sealing strip is elastic, so the sealing leaves 35 can continue to deflect without getting stuck.

[0056] In this embodiment, an auxiliary flow control component 4 is embedded in each of the exhaust holes. The auxiliary flow control component 4 includes a capture tube 41, which is an inclined horn tube. The capture tube 41 is embedded in the base tube 31 and one side opening is larger than the other side opening.

[0057] In addition, the capture tube 41 extends away from one side of the base tube 31 and forms an extension tube 42, a mounting ring 43 is fixed to the outside of the extension tube 42, a plurality of evenly distributed springs 46 are fixed on the mounting ring 43, the other ends of the plurality of springs 46 are commonly connected to a movable disk 44, a conical tube 45 is fixed to one side of the movable disk 44 close to the extension tube 42, and the tip of the conical tube 45 faces the extension tube 42.

[0058] In this embodiment, the capture tube 41 is an inclined trumpet tube, and the opening on one side of the base tube 31 is larger than the opening on the other side. This method is conducive to guiding the gas to flow in a specific direction, while increasing the contact area with the gas and improving the capture efficiency.

[0059] The extension tube 42, as an extension of the capture tube 41, not only extends the flow path of the gas, but also provides a mounting basis for the subsequent control structure. More specifically, the mounting ring 43 is fixed to the outside of the extension tube 42, and the springs 46 evenly distributed thereon provide elastic support for the moving disk 44, so that the moving disk 44 can move freely within a certain range to cope with gases of different flow rates and concentrations.

[0060] A cone 45 is fixed to one side of the moving disk 44 close to the extension tube 42, and the tip of the cone 45 faces the extension tube 42. The shape design of the cone 45 is conducive to further guiding the gas flow, and when the gas flow changes, the size of the channel (the annulus formed between the cone 45 and the extension tube 42) is adjusted by its movement. This dynamic adjustment helps to keep the gas flow entering the detector 36 within a reasonable range, avoiding the problem of inaccurate measurement caused by excessive flow.

[0061] Through the regulating effect of the auxiliary flow control component 4, the smoke and gas flow entering the monitoring system is more stable and moderate.

[0062] Furthermore, the cone 45 is also connected to a pull rope 47 , and the pull rope 47 passes through the capture tube 41 and is connected to the corresponding blocking leaf 35 .

[0063] That is to say, in this embodiment, there is a linkage effect between the cone 45 and the blocking leaf 35, making the device more flexible and efficient in adjusting the gas flow. When the blocking leaf 35 changes its angle, the cone 45 will also move accordingly through the transmission effect of the pull rope 47, thereby achieving precise adjustment of the gas channel.

[0064] In addition, the control logic can be simplified by the linkage design of the cone 45 and the plugging leaf 35. Originally, it may be necessary to control multiple parameters of the cone 45 and the plugging leaf 35 separately, but now only the angle of the plugging leaf 35 is needed to achieve the coordinated work of the two, which reduces the control difficulty and cost.

[0065] At the same time, the pull rope 47 as a mechanical connector has a simple structure and high reliability. When working in a harsh environment such as a coal mine, the pull rope 47 can maintain stable performance and is not easily disturbed or affected by external factors.

[0066] In this embodiment, the detector 36 includes:

[0067] An installation bin 361 is fixed at the air outlet position of the base tube 31;

[0068] The detector body 362 is fixedly embedded in the middle of the installation compartment 361;

[0069] A plurality of through holes 363 are formed on the installation compartment 361 , and the through holes 363 are distributed around the detector body 362 .

[0070] In this embodiment, the installation chamber 361 provides a stable installation environment for the detector body 362, reducing interference from external factors. At the same time, the design of the through hole 363 ensures that the gas can flow through the detector 36 evenly and smoothly.

[0071] In this embodiment, the base 1 is movably disposed on the top rail 6, and the moving speed range is 20m / min-40m / min, and the top rail 6 is distributed along the direction of the lane.

[0072] In this embodiment, the moving speed range of the base 1 is set to 20m / min to 40m / min. The selection of this speed range is based on considerations of multiple factors:

[0073] Monitoring efficiency: Faster movement speed can shorten the time required for the monitoring device to move in the tunnel, thereby improving monitoring efficiency. In emergency situations, such as the early stages of a fire, fast movement can help the monitoring device reach potential danger areas more quickly.

[0074] Stability and accuracy: Although faster movement speed can improve efficiency, it is also necessary to ensure the stability and accuracy of the monitoring device during movement. Too fast movement speed may cause instability or increase errors in measurement data.

[0075] Lane conditions: Lane conditions (such as slopes, curves, obstacles, etc.) will also affect the moving speed of the base 1. In complex or narrow lanes, it may be necessary to reduce the moving speed to ensure safety.

[0076] In this embodiment, the top rail 6 provides a clear guide for the movement of the base 1, ensuring that it moves along a predetermined route in the tunnel. In addition, the top rail 6 can be customized and installed according to the actual conditions of the tunnel to adapt to tunnels of different shapes, sizes and slopes. This flexibility enables the monitoring device to be widely used in various coal mine environments.

[0077] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coal mine fire smoke monitoring device, characterized in that: The invention comprises a base (1), the bottom of which is rotatably provided with a rotating seat (2), the rotating seat (2) having a deflection end, the deflection end being connected to a monitoring component (3) so as to adjust the pitch angle of the monitoring component (3); wherein the monitoring component (3) comprises: a base tube (31), one side of which is an air inlet, the other side of which is an air outlet, a detector (36) being installed at the position of the air outlet, and a protective net (5) being installed at the position of the air inlet; a motor (32), which is fixed to the middle position of the base tube (31) by a support rod (34), and a fan (36) being fixed at the output end of the motor (32) blades (33); a plurality of circumferentially spaced blocking blades (35), wherein a shaft body is connected through the middle thereof, one end of the shaft body is rotationally connected to the motor (32), and the other end of the shaft body is rotationally connected to the base tube (31), and there are gaps between two adjacent blocking blades (35), between the blocking blade (35) and the motor (32), and between the blocking blade (35) and the base tube (31); a plurality of circumferentially spaced exhaust holes, wherein the exhaust holes are opened on the side of the base tube (31) and are located between the fan blades (33) and the blocking blades (35); An auxiliary flow control component (4) is embedded in each of the exhaust holes. The auxiliary flow control component (4) comprises a capture tube (41) which is an inclined horn tube. The capture tube (41) is embedded in the base tube (31) and has an opening on one side larger than an opening on the other side. The capture cylinder (41) extends away from the base cylinder (31) to form an extension cylinder (42); a mounting ring (43) is fixed to the outside of the extension cylinder (42); a plurality of evenly distributed springs (46) are fixed to the mounting ring (43); the other ends of the plurality of springs (46) are commonly connected to a moving disk (44); a cone cylinder (45) is fixed to the side of the moving disk (44) close to the extension cylinder (42); the tip of the cone cylinder (45) faces the extension cylinder (42); The cone (45) is also connected to a pull rope (47), and the pull rope (47) passes through the capture cylinder (41) and is connected to the corresponding blocking leaf (35).

2. A coal mine fire smoke monitoring device according to claim 1, characterized in that: A side tube (37) corresponding to the shaft body is fixed on the outside of the base tube (31); the shaft body is rotatably connected to the side tube (37); the shaft body extends out of the side tube (37) and is connected to a rotating arm (38); a lever (39) is hingedly connected to the other end of the rotating arm (38); a connecting rod (310) is hingedly connected to one end of the lever (39) away from the rotating arm (38); a plurality of connecting rods (310) are commonly and fixedly connected to a rotating ring (311); a plurality of rotating wheels (312) are also rotatably arranged on the outside of the base tube (31) for supporting and rotatably connecting to the rotating ring (311).

3. A coal mine fire smoke monitoring device according to claim 1, characterized in that: An elastic sealing strip is fixed to the edge of each of the sealing leaves (35) for compensating for gaps between two adjacent sealing leaves (35), between the sealing leaf (35) and the motor (32), and between the sealing leaf (35) and the base cylinder (31).

4. A coal mine fire smoke monitoring device according to claim 1, characterized in that: The detector (36) comprises: a mounting chamber (361) fixed at the air outlet position of the base tube (31); a detector body (362) fixedly embedded in the middle position of the mounting chamber (361); and a plurality of through holes (363) opened on the mounting chamber (361), wherein the through holes (363) are distributed around the detector body (362).

5. A coal mine fire smoke monitoring device according to claim 1, characterized in that: The base (1) is movably arranged on a top rail (6) with a moving speed ranging from 20 m / min to 40 m / min, and the top rail (6) is distributed along the direction of the lane.

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