Mine safety monitoring device, system and method thereof

Abstract

The application relates to the technical field of mine monitoring, in particular to a mine safety monitoring device, system and method thereof. The mine drainage drilling hole monitoring device comprises a device body, an air inlet and an air outlet are formed in the device body, a connecting pipeline is connected with a plurality of air inlets, each air inlet is connected with one mine drainage drilling hole, a monitoring module is arranged in the device body and comprises a differential pressure monitoring mechanism, the differential pressure between the mine drainage drilling hole and a target pipeline is monitored, and a control mechanism is arranged in the device body and is in communication connection with the monitoring module. In the application, one mine drainage drilling hole monitoring device can be used to monitor a plurality of drainage drilling holes, so that the number of devices is reduced, the production cost, the equipment maintenance cost and the occupied space of the equipment are reduced.

Description

Technical Field

[0001] This invention relates to the field of mine detection technology, and in particular to a mine safety monitoring device, system and method. Background Technology

[0002] A coal mine is an assembly of underground coal production systems, including tunnels, chambers, equipment, surface buildings, and structures. In recent years, coal mine safety in my country has received widespread attention from the nation and its people, but the overall situation remains severe. Research on mine safety monitoring systems has always been a hot topic in operational safety equipment; however, most existing safety monitoring equipment suffers from the following shortcomings:

[0003] In the current mine safety monitoring process, the safety monitoring of drainage boreholes requires the installation of a complete monitoring device in each drainage borehole, which results in a large amount of manual installation labor, a large amount of equipment maintenance, and a large space occupation. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a mine safety monitoring device, system and method.

[0005] In a first aspect, embodiments of the present invention provide a mine safety monitoring device, the device comprising:

[0006] The device body has an air inlet and an air outlet.

[0007] A connecting pipeline is provided, and multiple air inlet connectors are connected to the connecting pipeline. Each air inlet connector is connected to a mine drainage borehole.

[0008] The monitoring module includes a differential pressure monitoring mechanism located within the device body; used to monitor the differential pressure between the mine drainage borehole and the target pipeline;

[0009] The control mechanism is located within the device body and is communicatively connected to the monitoring module.

[0010] In conjunction with the first aspect, the differential pressure monitoring mechanism includes a differential pressure sensor, one side of which is connected to the outlet of the connecting pipeline via a connector.

[0011] In conjunction with the first aspect, the device further includes:

[0012] A three-way solenoid valve is located inside the device body and connected to the other side of the differential pressure sensor.

[0013] In conjunction with the first aspect, the three-way solenoid valve includes a first to a third connection port. The first connection port of the three-way solenoid valve is connected to the differential pressure sensor; the second connection port of the three-way solenoid valve is connected to the mine drainage pipeline; and the third connection port of the three-way solenoid valve is connected to the external roadway pipeline. The three-way solenoid valve of the differential pressure monitoring mechanism is communicatively connected to the control mechanism and is controlled by the control mechanism to rotate in order to switch the airflow leading to the differential pressure monitoring mechanism.

[0014] In conjunction with the first aspect, an electromagnetic valve is provided on the connecting pipeline between the air inlet connector and the mine drainage borehole. The electromagnetic valve is communicatively connected to a control mechanism and is rotated under the control of the control mechanism to open or close the connecting pipeline between the mine drainage borehole and the air inlet connector.

[0015] In conjunction with the first aspect, the monitoring module further includes: a gas flow monitoring mechanism, which is disposed on the outer wall of the mine drainage borehole;

[0016] In conjunction with the first aspect, the air flow monitoring mechanism includes:

[0017] An ultrasonic module is installed in a mounting hole on the outer wall of a mine drainage borehole; an ultrasonic flow sensor is installed on the outer wall of the mine drainage borehole and connected to the ultrasonic module via wiring.

[0018] In a second aspect, this application provides a mine safety monitoring system, the system including the aforementioned device, the system further including an alarm, the alarm being communicatively connected to a control mechanism within the device.

[0019] Thirdly, this application provides a mine safety monitoring method, which is applied to a control mechanism within the aforementioned mine safety monitoring system. The control mechanism is connected to multiple mine drainage boreholes, each of which is connected to a solenoid valve. The control mechanism stores a borehole group monitoring list, which includes drainage boreholes to be monitored and the monitoring time corresponding to each borehole. The method includes:

[0020] Based on the borehole group monitoring list, determine the extraction hole to be detected at the current moment;

[0021] Obtain the solenoid valve corresponding to the extraction / discharge hole to be detected;

[0022] The solenoid valve is opened to connect the pipeline between the extraction / discharge hole to be tested and the monitoring module.

[0023] The monitoring module is controlled to monitor the gas in the extraction hole to be tested.

[0024] In conjunction with the third aspect, the control mechanism stores the set thresholds corresponding to each parameter in the detection data, and the control mechanism is also connected to the alarm.

[0025] After the step of controlling the monitoring module to monitor the gas in the extraction orifice to be detected, the method further includes:

[0026] Receive detection data detected by the monitoring module; the detection data includes multiple parameters;

[0027] For each parameter, determine whether the parameter is greater than a set threshold;

[0028] If so, activate the alarm.

[0029] The embodiments of this invention bring the following beneficial effects: This invention provides a mine safety monitoring device, system, and method. The mine drainage borehole monitoring device includes: a device body with an air inlet and an air outlet; a connecting pipeline with multiple air inlet connectors, each air inlet connector being connected to a mine drainage borehole; a monitoring module including a differential pressure monitoring mechanism disposed within the device body for monitoring the differential pressure between the mine drainage borehole and the target pipeline; and a control mechanism disposed within the device body and communicatively connected to the monitoring module. In this application, multiple drainage boreholes can be monitored using a single mine drainage borehole monitoring device, thereby reducing the number of devices, and consequently lowering production costs, equipment maintenance costs, and the space occupied by the devices.

[0030] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained in accordance with the structures particularly pointed out in the description, claims and drawings.

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0032] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of a mine safety monitoring device provided in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of another mine safety monitoring device provided in an embodiment of the present invention;

[0035] Figure 3 A schematic diagram of the gas flow monitoring mechanism in the mine safety monitoring device provided in this embodiment of the invention;

[0036] Figure 4 This is a schematic diagram of the monitoring signal transmission in a mine safety monitoring system provided in an embodiment of the present invention;

[0037] Figure 5 This is a schematic flowchart of a mine safety monitoring method provided in an embodiment of the present invention.

[0038] Figure label:

[0039] 1-Device body, 2-Connecting pipeline, 21-Inlet connector, 3-Monitoring module, 31-Differential pressure monitoring mechanism, 32-Air flow monitoring mechanism, 321-Ultrasonic module, 322-Ultrasonic flow sensor, 4-Control mechanism, 6-Three-way solenoid valve, 7-Solenoid valve. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] To facilitate understanding of this embodiment, the technical terms used in this application will be briefly introduced below.

[0042] Goaf: refers to the voids or cavities left after underground coal or gangue has been mined during coal mining operations.

[0043] After introducing the technical terms used in this application, the application scenarios and design concepts of the embodiments of this application will be briefly described below.

[0044] Research on mine safety monitoring systems has always been a hot topic in operational safety equipment; however, most existing safety monitoring equipment suffers from the following drawbacks:

[0045] In the current mine safety monitoring process, the safety monitoring of drainage boreholes requires the installation of a complete monitoring device in each drainage borehole, which results in a large amount of manual installation labor, a large amount of equipment maintenance, and a large space occupation.

[0046] Based on this, this application provides a mine safety monitoring device, combined with Figure 1 As shown, the device includes: a device body 1, connecting pipes 2, a monitoring module 3, and a control mechanism 4 (e.g., ...). Figure 1 (As shown).

[0047] The device body 1 has an air inlet and an air outlet.

[0048] The connecting pipe 2 is connected to multiple air inlet connectors 21, and each air inlet connector 21 is connected to a mine drainage borehole.

[0049] The monitoring module 3 includes a differential pressure monitoring mechanism 31 located inside the device body 1.

[0050] The control mechanism 4 is located inside the device body 1 and is connected to the monitoring module 3.

[0051] In this application, the monitoring module 3 is connected to multiple mine drainage boreholes via multiple air inlet connectors 21 of the connecting pipeline 2 to detect the pressure difference between the air pressure inside the mine drainage boreholes and the target pipeline. This allows for the monitoring of multiple mine drainage boreholes using a single mine safety monitoring device, thereby reducing the number of devices, the cost of the devices, and consequently lowering production and maintenance costs.

[0052] The differential pressure monitoring mechanism 31 in the monitoring module 3 is used to detect the first differential pressure between the mine drainage borehole and the mine drainage pipeline and the second differential pressure between the mine drainage borehole and the outside of the device body 1. This helps the staff to determine whether there is silt in the mine drainage borehole and whether it needs to be cleaned, and to formulate an appropriate treatment plan based on the air pressure and airflow in the mine drainage borehole to ensure the safety of mine operations.

[0053] There are multiple mine drainage boreholes, and there are also multiple air inlet connectors 21 corresponding to these multiple mine drainage boreholes. In this embodiment, there are at least 20 mine drainage boreholes.

[0054] In conjunction with the first aspect, the differential pressure monitoring mechanism 31 in the mine safety monitoring device includes a differential pressure sensor. One side of the differential pressure sensor is connected to the air outlet of the connecting pipe 2 through a connector. The differential pressure sensor is located inside the device body 1. The differential pressure sensor is used to sense the air pressure in the pipes on both sides of the differential pressure sensor and calculate the pressure difference of the gas in the pipes on both sides.

[0055] In this embodiment, the differential pressure sensor is used to detect the first differential pressure between the mine drainage borehole and the mine drainage pipeline, and the second differential pressure between the mine drainage borehole and the outside of the device body 1.

[0056] As another feasible approach, the differential pressure sensor can also be used to monitor the third differential pressure between the mine drainage pipeline and the external pipeline of the device body 1; to determine whether the negative pressure in the mine drainage pipeline meets the set requirements.

[0057] In conjunction with the first aspect, this application provides a mine safety monitoring device that also includes a three-way solenoid valve 6.

[0058] The three-way solenoid valve 6 is located inside the device body 1 and is connected to the other side of the differential pressure sensor.

[0059] In conjunction with the first aspect, the three-way solenoid valve 6 includes a first to a third connection port. The first connection port of the three-way solenoid valve 6 is connected to a differential pressure sensor; the second connection port of the three-way solenoid valve 6 is connected to a mine drainage pipeline; and the third connection port of the three-way solenoid valve 6 is connected to an external roadway pipeline. The differential pressure monitoring mechanism 31, the three-way solenoid valve 6, and the control mechanism 4 are communicatively connected. The three-way solenoid valve 6 is controlled by the control mechanism 4 to rotate in order to switch the airflow to the differential pressure monitoring mechanism, thereby realizing the monitoring of the aforementioned first to third differential pressures.

[0060] In this embodiment, the first connection port of the three-way solenoid valve 6 is connected to the differential pressure monitoring mechanism 31, the second connection port is connected to the roadway outside the device body 1, and the third connection port is connected to the mine drainage pipeline. In this embodiment, the second and third ports are on the same side.

[0061] In conjunction with the first aspect, this application provides a mine safety monitoring device, wherein there are multiple air inlet connectors 21 on the connecting pipeline 2, and the multiple air inlet connectors 21 are connected to multiple mine drainage boreholes one by one; a solenoid valve 7 is provided on the connecting pipeline 2 between the air inlet connector 21 and the mine drainage borehole, the solenoid valve 7 is communicatively connected to the control mechanism 4, and the solenoid valve 7 is rotated under the control of the control mechanism 4 to open or close the connecting pipeline between the mine drainage borehole and the air inlet connector 21.

[0062] In this embodiment, a solenoid valve 7 is provided on the pipeline connecting each air inlet connector 21 to the mine drainage borehole. The solenoid valve 7 rotates under the control of the control mechanism 4, which can controllably open the pipeline connecting the air inlet connector 21 to the mine drainage borehole, so that the gas in the mine drainage borehole can be conducted to the differential pressure monitoring mechanism 31, so that the differential pressure monitoring mechanism 31 can measure the gas pressure in the mine drainage borehole.

[0063] In conjunction with the first aspect, this application provides another mine safety monitoring device, wherein the monitoring module 3 includes a differential pressure monitoring mechanism 31 and a gas flow monitoring mechanism 32 (e.g., Figure 2 (As shown).

[0064] The air flow monitoring mechanism 32 includes: an ultrasonic module 321 and an ultrasonic flow sensor 322 (combined with...). Figure 3 (As shown).

[0065] The ultrasonic module 321 is installed in the mounting hole on the outer wall of the well drilling hole.

[0066] The ultrasonic flow sensor 322 is connected to the ultrasonic module 321 via wiring.

[0067] In this embodiment, the ultrasonic module 321 is used to transmit and receive ultrasonic waves, and the ultrasonic flow sensor 322 is connected to the ultrasonic module 321 by a circuit to monitor the airflow in the drilling drainage borehole. By detecting the air pressure and airflow in the drilling drainage borehole, workers can determine whether there is silt in the borehole and whether it needs to be cleaned. Based on the air pressure and airflow in the drilling drainage borehole, appropriate treatment plans can be formulated to ensure the safety of mine operations.

[0068] The gas flow monitoring unit 32 and the differential pressure monitoring unit 31 are respectively connected to the control unit 4. Based on the gas flow monitoring unit 32 and the differential pressure monitoring unit 31, the staff can roughly determine whether there is a problem in the pipeline or in which specific area of ​​the pipeline. For example, if the differential pressure measured by the differential pressure monitoring unit 31 changes, it indicates that there may be a problem with the connecting pipeline 2. If the negative pressure measured by the differential pressure monitoring unit 31 changes, it indicates that there may be a problem with the drilling and drainage pipeline. If the gas flow value of the gas flow monitoring unit 32 suddenly drops, it indicates that there is a blockage in the drilling and drainage pipeline, which needs to be cleaned.

[0069] Thus, the mine safety monitoring device provided in this embodiment can combine differential pressure monitoring data and gas flow monitoring data to obtain a comprehensive judgment result, thereby improving monitoring accuracy.

[0070] In practical applications, due to the large number of boreholes in the drilling site, multiple air inlet connectors 21 are connected to the connecting pipes in the device provided in this embodiment. Each air inlet connector 21 is connected to a mine drainage borehole, and each drainage borehole corresponds to a solenoid valve 7. The control mechanism 4 opens the solenoid valves 7 sequentially according to the preset monitoring program to monitor the drainage boreholes in sequence. For example, there are n drainage boreholes, which are labeled and numbered (1,2,3,...n); the solenoid valves 7 corresponding to each drainage borehole are numbered sequentially as (71,72,73,...7n); then, the first to third pressure difference and gas flow rate monitoring are performed within the monitoring period corresponding to each drainage borehole. Preferably, parameters such as gas type and gas concentration are also monitored within this monitoring period.

[0071] After the monitoring cycle, the solenoid valve 7 corresponding to the well drainage hole i is closed, numbered 7i; then the solenoid valve 7 corresponding to the well drainage hole (i+1) is opened, numbered 7(i+1); after that, the parameters such as the first to third pressure difference, gas flow rate, gas type, and gas concentration are monitored during the monitoring cycle corresponding to each well drainage hole.

[0072] Similarly, the n wellbore drainage boreholes are monitored sequentially.

[0073] In conjunction with the first aspect, the mine safety monitoring device provided in this application also includes a power supply device. The power supply device is connected to multiple gas flow monitoring units to supply power to the multiple gas flow monitoring units. In this embodiment, the power supply device is an intrinsically safe power source.

[0074] Secondly, this application provides a mine safety monitoring system, which includes the aforementioned device. The system also includes an alarm, which is communicatively connected to the control mechanism 4 within the device (in conjunction with...). Figure 4 (As shown).

[0075] In this embodiment, the alarm includes a voice alarm module and a display alarm module. The control mechanism 4 activates the alarm when abnormal parameters are detected in the data, providing voice prompts or warnings via indicator lights.

[0076] Preferably, the control mechanism 4 within the system can also be connected to a host computer, thereby transmitting the detected parameters to the host computer and generating detection reports, detection curves for each parameter, etc., based on the multiple parameters. In this embodiment, the host computer includes an external PC and other electronic devices.

[0077] Thirdly, this application provides a mine safety monitoring method, which is applied to a control mechanism 4 in a mine safety monitoring system as described above. The control mechanism 4 includes a processor and a memory. The memory stores a computer program, and the processor executes the computer program to implement the mine safety monitoring method provided in the embodiments of this application.

[0078] In this embodiment, the control mechanism 4 is connected to multiple solenoid valves 7, each solenoid valve 7 being connected to a mine drainage borehole. The control mechanism 4 stores a monitoring list of borehole clusters, which includes multiple drainage boreholes to be monitored and the monitoring time corresponding to each borehole. Figure 5 The method shown includes:

[0079] S110, the processor determines the corresponding extraction hole to be detected at the current moment based on the drilling hole group monitoring list.

[0080] S120, the processor determines the number of the solenoid valve corresponding to the extraction / discharge port to be detected.

[0081] S130, the processor controls the opening of the solenoid valve corresponding to the number to be tested, so as to connect the pipeline between the extraction hole to be tested and the monitoring module.

[0082] S140, the processor controls the monitoring module to monitor the gas in the extraction / discharge port to be tested.

[0083] In this embodiment, based on the acquisition of the extraction hole to be detected corresponding to the current time and the solenoid valve corresponding to the extraction hole to be detected, the control mechanism 4 opens the solenoid valve 7 to connect the connection pipeline between the extraction hole to be detected and the monitoring module 3, thereby controlling the monitoring module 3 to monitor the gas in the extraction hole to be detected.

[0084] The differential pressure monitoring mechanism 31 and the gas flow monitoring mechanism 32 in the monitoring module 3 can work simultaneously to perform differential pressure detection and gas flow detection at the same time; preferably, the gas monitoring mechanism and the monitoring module 3 can also work simultaneously to perform differential pressure detection, gas flow detection and gas concentration detection at the same time.

[0085] In step S130, the solenoid valve corresponding to the current extraction hole to be tested is opened and the solenoid valve corresponding to the previous extraction hole to be tested is closed. In this way, the first connection pipeline between the previous extraction hole to be tested and the monitoring module is closed, and the second connection pipeline between the extraction hole to be tested and the monitoring module is opened.

[0086] In this embodiment, the indicators to be detected for each borehole in the borehole group include: A - gas flow rate of the mine drainage borehole, B - gas type and gas concentration of the mine drainage borehole, C1 - first pressure difference between the mine drainage borehole and the mine drainage pipeline, C2 - second pressure difference between the mine drainage borehole and the roadway, and D - third pressure difference between the mine drainage pipeline and the external gas pressure.

[0087] The inspection time corresponding to the first differential pressure is: H C1 =T0+a×(n-1); where T0 is the initial detection time (e.g., 8:00am), a is the first differential pressure monitoring time interval between the two mine drainage boreholes, and n is the nth mine drainage borehole to be detected.

[0088] The inspection time corresponding to the second differential pressure: H C2 =H0+b×(n-1); represents the time when all drainage boreholes in the mine to be inspected are completed, and b is the time interval between the second differential pressure monitoring of the two drainage boreholes.

[0089] Inspection time corresponding to the third differential pressure: H D = H C1 +H C2 +T X Among them, T X This is the time interval between detecting the third pressure difference and detecting the second pressure difference. As one implementation method, T... X The value range is 2-8 minutes. In this embodiment, T is set to... X =5 minutes, i.e., T X =0:05.

[0090] In conjunction with the third aspect, the control mechanism 4 stores the set thresholds corresponding to each parameter in the detection data, and the control mechanism 4 is also connected to the alarm.

[0091] After step S140, which involves controlling the monitoring module to monitor the gas inside the extraction / discharge port, the following steps are also included:

[0092] S210 receives detection data from the monitoring module; the detection data includes multiple parameters;

[0093] S220: For each parameter, determine whether the parameter is greater than a set threshold.

[0094] If so, proceed to step S230.

[0095] S230, the processor activates the alarm.

[0096] In this embodiment, after the monitoring module 3 detects the extraction hole to be tested, it judges each parameter in the detection data. If the parameter is greater than the set threshold, the alarm is activated to prompt the staff to take timely action and avoid dangerous situations, thereby improving mine safety.

[0097] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and apparatus described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0098] Furthermore, in the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0099] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0100] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0101] Finally, it should be noted that the above embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A mine safety monitoring device, characterized by, The device comprises: A device body, an air inlet and an air outlet are formed on the device body; A connecting pipeline, a plurality of air inlet joints are connected to the connecting pipeline, each air inlet joint is connected to a mine drainage borehole; A monitoring module, a differential pressure monitoring mechanism is arranged in the device body; the differential pressure monitoring mechanism is used for monitoring the pressure difference between the mine drainage borehole and the target pipeline; the differential pressure monitoring mechanism comprises a differential pressure sensor, one side of the differential pressure sensor is connected to the air outlet of the connecting pipeline through a connecting piece; the monitoring module further comprises: an air flow monitoring mechanism, the air flow monitoring mechanism is arranged on the outer wall of the borehole; the air flow monitoring mechanism comprises: an ultrasonic module, the ultrasonic module is arranged in a mounting hole on the outer wall of the mine drainage borehole; an ultrasonic flow sensor, the ultrasonic flow sensor is arranged on the outer wall of the mine drainage borehole and is connected to the ultrasonic module in line; A three-way electromagnetic valve is arranged in the device body, a first connecting port of the three-way electromagnetic valve is connected to the differential pressure sensor; a second connecting port of the three-way electromagnetic valve is communicated with the mine drainage pipeline, a third connecting port of the three-way electromagnetic valve is communicated with the external roadway pipeline; the three-way electromagnetic valve of the differential pressure monitoring mechanism is communicated with the control mechanism and is controlled to rotate to switch the air flow to the differential pressure monitoring mechanism; A control mechanism is arranged in the device body and is communicated with the monitoring module and the three-way electromagnetic valve; the control mechanism is used for controlling the switching of the three-way electromagnetic valve, the differential pressure sensor is used for detecting the first pressure difference between the mine drainage borehole and the mine drainage pipeline and the second pressure difference between the mine drainage borehole and the outside of the device body; the differential pressure sensor is also used for monitoring the third pressure difference between the mine drainage pipeline and the pipeline outside the device body; The control mechanism is communicated with the three-way electromagnetic valve and the air flow monitoring mechanism, the air flow monitoring mechanism and the differential pressure monitoring mechanism are respectively communicated with the control mechanism, according to the air flow monitoring mechanism and the differential pressure monitoring mechanism, the worker can judge whether there is a problem in the pipeline or in which specific area of the pipeline.

2. The apparatus of claim 1, wherein, An electromagnetic valve is arranged on the connecting pipeline of the air inlet joint and the mine drainage borehole, the electromagnetic valve is communicated with the control mechanism and is controlled to rotate to conduct or block the connection between the mine drainage borehole and the connecting pipeline of the air inlet joint.

3. A mine safety monitoring system, characterized by, The system comprises the device according to any one of claims 1-2, and further comprises an alarm, the alarm is communicated with the control mechanism in the device.

4. A mine safety monitoring method characterized by, The method is applied to the control mechanism in the mine safety monitoring system according to claim 3, the control mechanism is connected to a plurality of mine drainage boreholes, each mine drainage borehole is connected to an electromagnetic valve, a borehole group monitoring list is stored in the control mechanism, the borehole group monitoring list comprises a to-be-monitored drainage borehole and a monitoring time corresponding to each to-be-monitored drainage borehole, and the method comprises: According to the borehole group monitoring list, a to-be-detected drainage borehole corresponding to the current time is determined; An electromagnetic valve corresponding to the to-be-detected drainage borehole is obtained; The electromagnetic valve is controlled to open to turn on a connecting pipeline between the to-be-detected exhaust hole and the monitoring module; The monitoring module is controlled to monitor the gas in the to-be-detected exhaust hole.

5. The method of claim 4, wherein, The control mechanism stores set threshold values corresponding to each parameter in the detection data, and is in communication connection with an alarm; After the step of controlling the monitoring module to monitor the gas in the to-be-detected exhaust hole, the method further includes: Receiving detection data detected by the monitoring module; the detection data includes multiple parameters; For each parameter, it is judged whether the parameter is greater than a set threshold value; If yes, the alarm is started.

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