Coal mine underground automatic spraying and dust falling centralized control system

Abstract

The utility model relates to the field of underground coal mine safety monitoring and dust falling, in particular to an underground coal mine automatic spraying and dust falling centralized control system. Comprising a ground ring network switch, an underground ring network switch, a plurality of dust control subsystems, a plurality of water quality monitoring systems, an audible and visual alarm, a main control computer, a printer, a lightning protection module, a standby main control computer and an integrated information network. The ground ring network switch is connected with the main control computer, and the printer, the lightning protection module, the standby main control computer and the integrated information network are connected with the main control computer. The device improves the labor hygiene condition of an underground mine working place, improves the safety production level of a mine, guarantees the safety production of a coal mine and the personal safety of workers, and prevents coal mine accidents from happening.

Description

Technical Field

[0001] The utility model relates to the field of underground coal mine safety monitoring and dust reduction, in particular to an underground coal mine automatic spray dust reduction centralized control system. Background Art

[0002] With the deepening of automation in coal mine production, mine dust production has become large, complex and difficult to control; the large amount of dust in the underground environment will cause underground workers to inhale it for a long time, leading to pneumoconiosis; and under certain conditions, coal dust explosions can occur, leading to mine accidents.

[0003] In order to effectively improve the dust reduction efficiency of various dust-producing points such as coal mining, excavation working faces and large tunnels, an intelligent comprehensive dust prevention system for mines is established, and with the help of sensors and intelligent devices, remote online monitoring and control are carried out to improve the labor and hygiene conditions in underground workplaces and the safety production level of mines, ensure the safety production of coal mines and the personal safety of employees, and prevent coal mine accidents. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an automatic spray dust reduction centralized control system for underground coal mines.

[0005] The utility model is achieved through the following technical solutions:

[0006] An automated underground spray dust suppression centralized control system for a coal mine comprises a ground ring network switch, an underground ring network switch, several dust control subsystems, several water quality monitoring systems, an audible and visual alarm, a main control computer, a printer, a lightning protection module, a spare main control computer, and an integrated information network; the ground ring network switch is connected to the main control computer, and the printer, the lightning protection module, the spare main control computer, and the integrated information network are connected to the main control computer; the ground ring network switch is communicatively connected to the underground ring network switch, and the underground ring network switch is connected to several dust control subsystems and several water quality monitoring systems; the system can remotely monitor and manage the underground subsystems through the ground main control computer, and the printer can print reports and curves; when the underground data is abnormal, the audible and visual alarm acts as an alarm to remind management; the spare main control computer acts as a backup and standby.

[0007] The dust control subsystem includes a dust monitoring substation, a first uninterruptible power supply (UPS), a dust concentration sensor connected to the dust monitoring substation via a junction box, a temperature and humidity sensor, a first intrinsically safe ball valve, multiple light-operated sensors connected to the first intrinsically safe ball valve, and a second intrinsically safe ball valve, along with several two-phase atomizing nozzles. Water and air circuits supply water and air to the two-phase atomizing nozzles. The first intrinsically safe ball valve is located in the water circuit, while the second intrinsically safe ball valve is located in the air circuit to control the opening and closing of the circuits. The dust control subsystem dynamically measures dust concentration in the mine and, through dynamic dust concentration data analysis, implements intelligent management of spray control, effectively suppressing dust while conserving water.

[0008] The water quality monitoring system includes a waterway monitoring substation, a second uninterruptible power supply (UPS) connected to the substation, an intrinsically safe turbidity sensor, and a flow cell. The intrinsically safe turbidity sensor communicates with the substation's internal control system, and its probe is placed within the flow cell. Intrinsically safe turbidity sensors are installed on essential underground firefighting lines for online water quality monitoring to ensure the continuity and reliability of underground sprinkler spraying. This prevents nozzle blockage, which can occur due to corrosion or sediment in underground firefighting water lines, and improves the reliability of underground firefighting spraying.

[0009] A further solution is: an uninterruptible power supply box supplies power to the monitoring substation to ensure the normal operation of the equipment is not affected by the underground power supply system.

[0010] A further solution is to have a monitoring substation with multiple RS485 bus communication interfaces. One interface collects signals from dust concentration sensors, temperature and humidity sensors, and intrinsically safe ball valves, while another interface communicates with the underground ring network switch for data exchange. This substation enables online monitoring of dust concentration, temperature and humidity in the coal mine, and automatically interacts with the intrinsically safe ball valves.

[0011] A further solution is: the intrinsically safe ball valve has multiple RS485 bus communication interfaces, which can collect light-controlled sensor signals and realize regional logic control.

[0012] A further solution is: the ground ring network switch and the underground ring network switch have RS485 bus communication interfaces, which can realize data interaction and uploading.

[0013] The beneficial effects of the utility model are:

[0014] 1. The intelligent integrated dust control system for mines can effectively improve the dust reduction efficiency of various dust-generating points such as coal mining and excavation working faces and main lanes. It also uses sensors and related devices for remote online monitoring and control, thereby improving the labor and hygiene conditions in underground workplaces and the safety level of mine production, ensuring coal mine production safety and the personal safety of employees, and preventing coal mine accidents.

[0015] 2. The automated underground coal mine spray dust suppression centralized control system remotely monitors multiple dust control subsystems, integrating an online dust monitoring system with an automatic spray sprinkler control system. It provides online monitoring of dust concentration, temperature, and humidity in coal mines, and automatically interacts with the spray sprinkler system. The system integrates dust monitoring technology, infrared pyroelectric sensing technology, and temperature and humidity sensing technology, enabling linkage between dust and spray water curtains, remote monitoring, and dust quantity monitoring.

[0016] 3. The water quality monitoring system is equipped with intrinsically safe turbidity sensors and other equipment to monitor the spray water quality in real time and collect data, analyze the fire water quality data, conduct dynamic measurements, and set alarm values ​​to prevent the fire water from failing to meet the requirements of spray dust reduction or fire extinguishing;

[0017] 4. The monitoring substation can not only interact with the corresponding sensors on site, but also has RS485 bus communication function to realize remote intelligent centralized control of underground coal dust; the data statistics, analysis and alarm functions in the main control computer software improve the efficiency and safety of the dust monitoring system;

[0018] 5. The device is simple to use and the structure is easy to implement. It can achieve effective results without other auxiliary devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model of the coal mine underground automatic spray dust suppression centralized control system;

[0020] In the figure: 1-sound and light alarm; 2-main control computer; 3-printer; 4-lightning protection module; 5-backup main control computer; 6-integrated information network; 7-ground ring network switch; 8-underground ring network switch; 9-first uninterruptible power supply box; 10-dust monitoring substation; 11-dust concentration sensor; 12-junction box; 13-temperature and humidity sensor; 14-first intrinsically safe ball valve; 15-backwash filter; 16-two-phase flow atomizing nozzle; 17-intrinsically safe turbidity sensor; 18-circulation cell; 19-light control sensor. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0022] like Figure 1 The illustrated system is an automated underground coal mine spray dust suppression centralized control system, comprising a ground ring network switch 7, an underground ring network switch 8, several dust control subsystems, several water quality monitoring systems, an audible and visual alarm 1, a main control computer 2, a printer 3, a lightning protection module 4, a backup main control computer 5, and an integrated information network 6;

[0023] The ground ring network switch 7 is connected to the main control machine 2, and the printer 3, lightning protection module 4, backup main control machine 5, and integrated information network 6 are connected to the main control machine 2; the ground ring network switch 7 is connected to the underground ring network switch 8 for communication, and the underground ring network switch 8 is connected to several dust control subsystems and several water quality monitoring systems;

[0024] Specifically, the dust control subsystem includes a dust monitoring substation 10, a first uninterruptible power supply box 9, a dust concentration sensor 11 connected to the dust monitoring substation 10 via a junction box, a temperature and humidity sensor 13, a first intrinsically safe ball valve 14, multiple light-controlled sensors 19 connected to the first intrinsically safe ball valve 14, another second intrinsically safe ball valve, and several two-phase flow atomizing nozzles 16; water and air channels supply water and air to the two-phase flow atomizing nozzles 16, the first intrinsically safe ball valve 14 is set in the water channel, and the second intrinsically safe ball valve is set in the air channel to control the opening and closing of the pipeline;

[0025] The dust monitoring substation 10 has multiple RS485 bus communication interfaces, one of which can collect signals from the dust concentration sensor 11, the temperature and humidity sensor 13, and the first intrinsically safe ball valve 14, and the other communicates with the downhole ring network switch 8 to realize data interaction; the first intrinsically safe ball valve 14 has multiple RS485 bus communication interfaces, which can collect signals from the light control sensor 19 to realize regional logic control; the ground ring network switch 7 and the downhole ring network switch 8 have RS485 bus communication interfaces, which can realize data interaction and upload.

[0026] Specifically, the water quality monitoring system includes a water quality monitoring substation, a second uninterruptible power supply box, an intrinsically safe turbidity sensor 17, and a circulation pool 18; the intrinsically safe turbidity sensor 17 communicates with the internal control of the waterway monitoring substation, the probe of the intrinsically safe turbidity sensor 17 is placed in the circulation pool 18, and the second uninterruptible power supply box supplies power to the waterway monitoring substation.

[0027] The specific working process of this utility model is as follows:

[0028] According to the mine environment and usage requirements, the dust control subsystem and water quality monitoring system are arranged at suitable locations. By matching different sensors, various applications can be realized. The integration of multi-sensor sensors can achieve the purpose of automatic spraying, timed spraying, uploading of sensor data, and remote monitoring.

[0029] The first intrinsically safe ball valve 14 and the second intrinsically safe ball valve are installed in the water and air circuits underground in the coal mine, respectively. Because the underground water circuits contain a high concentration of impurities, a backwash filter is installed before the water circuit. The air circuit is supplied by a ground air compressor, and the water and air pipelines are connected to multiple two-phase flow atomizing nozzles 16. The intrinsically safe ball valves in the water and air circuits are opened and closed to create an underground water mist curtain, achieving the effect of spray dust reduction. A dust concentration sensor 11, a temperature and humidity sensor 13, and a light control sensor 19 are also installed. The infrared pyroelectric sensing technology of the light control sensor 19 triggers the opening of the intrinsically safe ball valve and the opening of the spray water curtain when an operator passes through the tunnel. The dust concentration sensor 11, the temperature and humidity sensor 13, and the light control sensor 19 monitor the dust concentration, temperature, and humidity of the underground environment, and upload the data through the dust monitoring substation 10. The intrinsically safe turbidity sensor 17 consists of a meter and a turbidity probe. Water in the waterway flows through a circulation cell 18, which is located within the turbidity probe. The meter in the intrinsically safe turbidity sensor 17 communicates with the waterway monitoring substation, transmitting data. The downhole ring network switch 8 interacts and uploads data with the dust monitoring substation 10 and the waterway monitoring substation. Downhole monitoring data is uploaded to the main control computer 2 via the surface ring network switch 7. Printer 3 prints reports and graphs. When downhole data is abnormal, an audible and visual alarm 1 alerts management. The backup main control computer 5 serves as a backup and standby.

[0030] In summary, this utility model integrates an online underground tunnel dust monitoring system, an automatic spray sprinkler control system, and water quality monitoring, enabling online monitoring of dust concentration and water turbidity in coal mines and automatic linkage with intrinsically safe ball valves. The system integrates dust monitoring technology, infrared pyrolysis sensing technology, and temperature and humidity sensing technology, enabling linkage and remote monitoring of dust and spray water curtains, as well as dust quantity monitoring and statistics. Furthermore, systematized remote monitoring and management can be achieved through the host computer software of the master control unit.

[0031] The above description shows and describes several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present application can be used in various other combinations, modifications, and environments and can be modified within the scope of the application concept described herein through the above teachings or technology or knowledge in the relevant field. Modifications and changes made by those skilled in the art that do not depart from the spirit and scope of the present application should be protected by the claims appended hereto.

Claims

1. An automated spray dust suppression centralized control system for underground coal mines, characterized by: It includes a ground ring network switch (7), an underground ring network switch (8), an audible and visual alarm (1), a main control machine (2), a printer (3), a lightning protection module (4), a backup main control machine (5), an integrated information network (6), several dust control subsystems, and several water quality monitoring systems; The ground ring network switch (7) is connected to the main control machine (2), and the printer (3), lightning protection module (4), backup main control machine (5), and integrated information network (6) are connected to the main control machine (2); The ground ring network switch (7) is connected to the downhole ring network switch (8), and the downhole ring network switch (8) is connected to a plurality of the dust control subsystems and a plurality of the water quality monitoring systems; The dust control subsystem comprises a dust monitoring substation (10), a first uninterruptible power supply box (9) connected to the dust monitoring substation (10), a dust concentration sensor (11) connected to the dust monitoring substation (10) through a junction box, a temperature and humidity sensor (13), a first intrinsically safe ball valve (14), a plurality of light control sensors (19) connected to the first intrinsically safe ball valve (14), and a second intrinsically safe ball valve, as well as a plurality of two-phase flow atomizing nozzles (16); a water channel and an air channel supply water and air to the two-phase flow atomizing nozzles (16); the first intrinsically safe ball valve (14) is arranged in the water channel, and the second intrinsically safe ball valve is arranged in the air channel to control the opening and closing of the pipeline; The water quality monitoring system comprises a waterway monitoring substation, a second uninterruptible power supply box connected to the waterway monitoring substation, an intrinsically safe turbidity sensor (17), and a circulation pool (18); the intrinsically safe turbidity sensor (17) is in internal control communication with the waterway monitoring substation, and a probe of the intrinsically safe turbidity sensor (17) is placed in the circulation pool (18).

2. The coal mine underground automated spray dust suppression centralized control system according to claim 1, characterized in that: The dust monitoring substation (10) has multiple RS485 bus communication interfaces, one of which is capable of collecting signals from the dust concentration sensor (11), the temperature and humidity sensor (13), and the first intrinsically safe ball valve (14), and the other is capable of communicating with the downhole ring network switch (8) to achieve data interaction.

3. The coal mine underground automated spray dust suppression centralized control system according to claim 2, characterized in that: The first intrinsically safe ball valve (14) has a multi-channel RS485 bus communication interface, which can collect signals from the light control sensor (19) and realize regional logic control.

4. The coal mine underground automated spray dust suppression centralized control system according to claim 1, characterized in that: The ground ring network switch (7) and the underground ring network switch (8) have RS485 bus communication interfaces to achieve data interaction and uploading.

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