An emergency water level regulating system and method for a coal mine central sump

Abstract

The present application belongs to the technical field of mine drainage, and discloses a coal mine central sump emergency water level regulating system and method. The coal mine central sump emergency water level regulating system comprises a pneumatic shield gate, an information acquisition unit and a control unit; the pneumatic shield gate is arranged at the entrance of the sump; wherein the sump is divided into a main sump tunnel and an auxiliary sump tunnel, the main sump tunnel is provided with a first waterproof airtight door, and the auxiliary sump tunnel is provided with a second waterproof airtight door; a water passage tunnel is arranged between the main sump tunnel and the auxiliary sump tunnel, the water passage tunnel is provided with a third waterproof airtight door, and the tail ends of the main sump tunnel and the auxiliary sump tunnel are connected to a central pump house; a drainage tunnel is arranged between the drainage tunnel and the auxiliary sump tunnel, and the drainage tunnel is provided with a fourth waterproof airtight door. The control unit can control the opening or closing of different waterproof airtight doors and the pneumatic shield gate, thereby realizing the control of the water inflow into the sump and the central pump house.

Description

Technical Field

[0001] This invention belongs to the field of mine drainage technology, specifically relating to an emergency water level regulation system and method for a central water tank in a coal mine. Background Technology

[0002] The underground drainage system is one of the main working systems in the coal mine production process. Its main function is to drain the water flowing from underground coal mines to the surface, ensuring a safe production environment in the mine.

[0003] The central substation and central pump house are key components for the normal operation of the underground drainage system. The central pump house is connected to the water tank, and a water distribution gate is installed at the connection point. In the event of a major water hazard (the central water tank is full and the water level continues to rise), the amount of water flowing into the mine exceeds the drainage capacity of the drainage system. When the water level exceeds the slope change point of the water tank (the elevation of the water-retaining wall of the suction well in the pump house), the water may overflow into the central pump house through the suction well, potentially causing a serious accident.

[0004] However, in existing technologies, when a water-related accident occurs in a mine, it is difficult to match the pump's drainage volume with the gate's water distribution volume by controlling the water distribution gate. When the water tank receives too much water, the gushing water will overflow the retaining wall, causing water to enter the pump house. When the water tank receives too little water, the pump cannot continuously discharge water, and in severe cases, it may even cause the pump to run dry or burn out, leading to the paralysis of the drainage system. The operability of adjusting the water distribution gate is poor. If the problem of water gushing from the water tank into the central pump house is not solved, the waterproof and airtight door of the central pump house will be useless. Summary of the Invention

[0005] The purpose of this invention is to provide an emergency water level regulation system and method for a central water tank in a coal mine, so as to control the amount of water flowing into the central pumping station from the water tank.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] An emergency water level regulation system for a central water tank in a coal mine includes a pneumatic shield gate, an information acquisition unit, and a control unit;

[0008] A pneumatic shield gate is installed at the entrance of the water tank; the water tank is divided into a main water tank tunnel and a secondary water tank tunnel. The main water tank tunnel is equipped with a first waterproof and airtight door, and the secondary water tank tunnel is equipped with a second waterproof and airtight door; a water passage tunnel is set between the main water tank tunnel and the secondary water tank tunnel, and a third waterproof and airtight door is installed in the water passage tunnel. The ends of both the main water tank tunnel and the secondary water tank tunnel are connected to the central pump room.

[0009] A drainage tunnel is provided between the spillway tunnel and the auxiliary water storage tunnel, and the drainage tunnel is equipped with a fourth waterproof and airtight door;

[0010] The information acquisition unit includes a liquid level sensor and a flow sensor. The liquid level sensor is installed in the main water tank tunnel, the auxiliary water tank tunnel, and the drainage tunnel. The liquid level sensor is used to monitor the water level value in the main water tank tunnel, the auxiliary water tank tunnel, and the drainage tunnel. The flow sensor is installed on the water pump in the central pump house. The flow sensor is used to monitor the drainage volume of the water pump.

[0011] The information acquisition unit transmits the collected liquid level data and water pump flow data from the main water tank tunnel, the auxiliary water tank tunnel, and the drainage tunnel to the control unit.

[0012] The control unit connects to the control terminals of the first waterproof and airtight door, the second waterproof and airtight door, the third waterproof and airtight door, the fourth waterproof and airtight door, the pneumatic shield gate, and the water pump.

[0013] Preferably, a fifth waterproof and airtight door is installed at the passage connecting to the central pump room, and a sixth waterproof and airtight door is installed at the passage connecting to the central substation.

[0014] The control unit is connected to the control terminals of the fifth and sixth waterproof and airtight doors.

[0015] Preferably, the information acquisition unit also includes a video / audio monitor, a vibration sensor, and a temperature sensor;

[0016] Video / audio monitors are installed at the central pump room, central substation, pneumatic shield gate, first waterproof and airtight door, second waterproof and airtight door, third waterproof and airtight door, fourth waterproof and airtight door, fifth waterproof and airtight door, and sixth waterproof and airtight door. The video / audio monitors are used to collect image / audio information and transmit the collected video / audio information to the control unit.

[0017] Both vibration and temperature sensors are installed at the equipment in the central pump room and central substation, and both are connected to the control unit. The vibration sensor is used to collect the vibration value of the equipment in the central pump room and central substation and transmit the vibration value to the control unit; the temperature sensor is used to collect the temperature value of the equipment in the central pump room and central substation and transmit the temperature value to the control unit.

[0018] Preferably, several warning devices are installed in several lanes. The warning devices include warning lights and buzzer alarms. The warning lights have different colors and / or flashing frequencies.

[0019] Preferably, the control unit includes a host computer and a slave computer, with the host computer connected to the slave computer via a communication module;

[0020] The lower-level machine connects to a liquid level sensor, flow sensor, vibration sensor, temperature sensor, video / audio monitor, and warning device.

[0021] Preferably, the communication module includes a ground switch, an underground switch, and an Ethernet ring network;

[0022] The ground switch and the underground switch communicate via an Ethernet ring network. The lower-level computer is connected to the underground switch, and the upper-level computer is connected to the ground switch.

[0023] A method for emergency water level regulation of a central water tank in a coal mine, applied to the aforementioned emergency water level regulation system for a central water tank in a coal mine;

[0024] The water level conditions in the reservoir are set into three levels: low water level, medium water level, and warning water level. The water level value of the low water level < the water level value of the medium water level < the water level value of the warning water level. There are N water pumps in total, where the number of pumps is 1 ≤ n1. <n2<N;

[0025] When all level sensors detect that the water level in the water tank is lower than the low water level line, the control unit controls the third waterproof and airtight door to close, while the pneumatic shield gate, the first waterproof and airtight door, the second waterproof and airtight door, the fourth waterproof and airtight door, the fifth waterproof and airtight door, and the sixth waterproof and airtight door are all opened.

[0026] When at least one level sensor detects that the water level in the water tank is greater than or equal to the low water level line, the control unit operates n1 water pumps to drain the water.

[0027] When at least one level sensor detects that the water level in the water tank is greater than or equal to the water level of the middle water level line, the control unit controls the second waterproof and airtight door to close, and the pneumatic shield gate, the first waterproof and airtight door, the third waterproof and airtight door, the fourth waterproof and airtight door, the fifth waterproof and airtight door and the sixth waterproof and airtight door are all opened, and n2 water pumps are run to drain water.

[0028] When at least one level sensor detects that the water level in the water tank is greater than or equal to the warning water level, the control unit controls the first and third waterproof and airtight doors to open, while the pneumatic shield gate, the second, fourth, fifth, and sixth waterproof and airtight doors are all closed, and N water pumps are operated to drain water.

[0029] Preferably, the control unit controls the warning light to emit different colors and / or flashing frequencies to provide a warning based on the water level value corresponding to different water level conditions in the water tank;

[0030] When the water level corresponding to the water level condition is greater than or equal to the warning water level, the buzzer alarm will sound to warn the user.

[0031] Preferably, the control unit controls the warning light to emit different colors of light to provide a warning based on data monitored by the video / audio monitor, flow sensor, vibration sensor, and temperature sensor.

[0032] The beneficial technical effects of this invention are:

[0033] The present invention discloses an emergency water level regulation system and method for a central water sump in a coal mine. The system monitors the water level using level sensors located in the main water sump roadway, the auxiliary water sump roadway, and the drainage roadway. Simultaneously, a flow sensor continuously monitors the drainage volume of the water pump. The control unit comprehensively judges the water level of the sump based on the flow data from the flow sensor and the level data from the level sensor, and sends a response signal to instruct the control unit to open or close different waterproof and airtight doors and pneumatic shield gates, as well as to determine the number of water pumps to be put into operation.

[0034] When the water level in the reservoir is lower than the low water level line, the water flow is small and can be temporarily stored in the main and auxiliary water reservoir tunnels. At this time, since the small amount of water flow will not affect production activities, the water pump is not in operation, thus reducing the energy consumption of the water pump. In addition, it can also reduce problems such as water pump dry suction and dry burning caused by insufficient water supply in the reservoir.

[0035] When the water level in the reservoir is greater than or equal to the low water level line, the gushing water can directly enter the central pumping station from the main reservoir tunnel and the auxiliary reservoir tunnel. The gushing water in the drainage tunnel enters the auxiliary reservoir tunnel through the drainage tunnel. Due to the small amount of gushing water, the third waterproof and airtight door of the water passage tunnel remains closed, allowing the gushing water to be quickly discharged directly from the main reservoir tunnel and the auxiliary reservoir tunnel through the central pumping station. The majority of the gushing water enters the central pumping station from the main reservoir tunnel, while a small amount enters from the auxiliary reservoir tunnel, thus improving the efficiency of the gushing water entering the central pumping station.

[0036] When the water level in the reservoir is greater than or equal to the water level at the middle water level, the second waterproof and airtight gate is closed, allowing water to enter from the main reservoir roadway. The third waterproof and airtight gate is opened, allowing water to flow from the main reservoir roadway through the third waterproof and airtight gate of the water passage roadway into the secondary reservoir roadway. At this time, the secondary reservoir roadway acts as a flow regulation and buffer to prevent excessive water from entering the central pump house from the main reservoir roadway, which would cause excessive drainage pressure in the central pump house and overload the pumps. Simultaneously, water from the drainage roadway enters the secondary reservoir roadway from the drainage roadway.

[0037] When at least one level sensor detects that the water level in the reservoir is greater than or equal to the warning level, the pneumatic shield gate rises to block the water. The clearer water from the upper part can then enter the main reservoir channel, while sedimented impurities remain at the bottom. This prevents the water from carrying large amounts of impurities into the central pump house and clogging the pumps when the water flow is large. It should be noted that when the water flow is small, the impurities carried by the water will gradually settle at the bottom of the reservoir in the central pump house. With the second and fourth waterproof airtight doors closed, the water enters the main reservoir channel and is discharged into the central pump house. Simultaneously, some of the water flows through the water passage into the auxiliary reservoir channel and is discharged through the central pump house. At this time, the water in the drainage channel does not enter the auxiliary reservoir channel; the first waterproof airtight door controls the amount of water entering the central pump house. The fifth and sixth waterproof airtight doors prevent water from entering the central pump house and the central substation.

[0038] Meanwhile, the system is equipped with a warning device. The control unit can control the warning light to emit different colors and / or flashing frequencies to warn people based on the water level values ​​corresponding to different water level conditions in the water tank. When the water level value in the water tank is greater than or equal to the warning water level line, the buzzer alarm can provide an audible warning.

[0039] In addition, the system is equipped with a flow sensor, a vibration sensor, a temperature sensor, and a video / audio monitor. The control unit uses data monitored by the video / audio monitor, flow sensor, vibration sensor, and temperature sensor to control the warning lights to emit different colors to provide an alert. Attached Figure Description

[0040] Figure 1 This is a layout diagram of an emergency water level regulation system for a central water tank in a coal mine, as described in an embodiment of the present invention.

[0041] 1-Pneumatic shield gate, 2-Main water tank tunnel, 3-Secondary water tank tunnel, 4-Drainage tunnel, 5-Water passage tunnel, 6-Drainage tunnel, 7-Central pump room, 8-Central substation, 9-First waterproof and airtight door, 10-Second waterproof and airtight door, 11-Third waterproof and airtight door, 12-Fourth waterproof and airtight door, 13-Fifth waterproof and airtight door, 14-Sixth waterproof and airtight door. Detailed Implementation

[0042] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. Certain embodiments of the invention will be described more fully below with reference to the accompanying drawings, and some, but not all, of these embodiments will be shown. In fact, various embodiments of the invention can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to enable the invention to meet applicable legal requirements.

[0043] In the description of this invention, it should be noted that the terms "inner," "outer," "upper," "lower," "front," and "rear," 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 this 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 this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In this embodiment of the invention, an emergency water level regulation system and method for a central water tank in a coal mine are provided.

[0045] like Figure 1 As shown, an emergency water level regulation system for a central water tank in a coal mine includes a pneumatic shield gate 1, an information acquisition unit, and a control unit.

[0046] A pneumatic shield gate 1 is installed at the entrance of the water tank; the water tank is divided into a main water tank tunnel 2 and a secondary water tank tunnel 3. A first waterproof and airtight door 9 is installed in the main water tank tunnel 2, and a second waterproof and airtight door 10 is installed in the secondary water tank tunnel 3; a water passage tunnel 5 is provided between the main water tank tunnel 2 and the secondary water tank tunnel 3 (in this embodiment, only one water passage tunnel is used as an example), and a third waterproof and airtight door 11 is installed in the water passage tunnel 5. The ends of the main water tank tunnel 2 and the secondary water tank tunnel 3 are both connected to the central pump room 7.

[0047] A drainage tunnel 6 is provided between the drainage tunnel 4 and the auxiliary water storage tunnel 3 (in this embodiment, only one drainage tunnel is used as an example), and the drainage tunnel 6 is equipped with a fourth waterproof and airtight door 12.

[0048] Furthermore, a fifth waterproof and airtight door 13 is installed at the passage connecting the central pump room 7, and a sixth waterproof and airtight door 14 is installed at the passage connecting the central substation 8.

[0049] The control unit connects to the control terminals of the equipment in the pneumatic shield gate 1, the first waterproof and airtight door 9, the second waterproof and airtight door 10, the third waterproof and airtight door 11, the fourth waterproof and airtight door 12, the fifth waterproof and airtight door 13, the sixth waterproof and airtight door 14, the central pump room 7, and the central substation 8. The equipment in these facilities can be remotely controlled to open or close via the control unit, or manually opened or closed on-site by the operator.

[0050] In this embodiment, the information acquisition unit includes a level sensor and a flow sensor. The level sensor is installed in the main water tank tunnel 2, the auxiliary water tank tunnel 3, and the drainage tunnel 4, while the flow sensor is installed on the water pump in the central pump house 7. The level sensor can monitor the water level in the main water tank tunnel 2, the auxiliary water tank tunnel 3, and the drainage tunnel 4 (wherein, since the central pump house 7 discharges the gushing water in the main water tank tunnel 2 and the auxiliary water tank tunnel 3 through the water pump, the level sensor in the main water tank tunnel 2 and the auxiliary water tank tunnel 3 plays the main monitoring role, while the level sensor in the drainage tunnel 4 plays an auxiliary monitoring role). The flow sensor can continuously monitor the drainage volume of the water pump. The control unit comprehensively judges the water level of the water tank based on the flow data information (drainage volume of the water pump) from the flow sensor and the level data information from the level sensor. The level sensor uses a high-precision ultrasonic, capacitive, or pressure-type level gauge, which displays the water level parameters accurately and has a water level indication function.

[0051] Furthermore, the information acquisition unit also includes a video / audio monitor, a vibration sensor, and a temperature sensor.

[0052] Both the central pump room 7 and the central substation 8 are equipped with video / audio monitors. The collecting end of the video / audio monitors faces the equipment in the central pump room 7 and the central substation 8. The video / audio monitors transmit the collected video / audio information (video images and sound) to the control unit. The control unit can monitor the operation of the equipment in the central pump room 7 and the central substation 8 through the video / audio monitors.

[0053] Specifically, the video / audio monitor uses a high-definition explosion-proof camera, and the control unit can identify the image and audio information captured by the camera. Image recognition involves the control unit identifying components such as mechanical instruments and valves to determine whether each device is operating normally. In this embodiment, taking the dial of a mechanical instrument as an example, the control unit first captures the instrument image based on the target location, then performs grayscale processing and smoothing. The image is binarized using an adaptive local threshold. Binarization separates the scale; the lines containing different scale lines intersect, converging at the center of the dial. The center position and the radius of the dial are determined using an algorithm. Around the center, the binary information within the dial radius is retained, and the largest connected area is selected as the pointer area. Points in the pointer's connected area are fitted with a straight line, and the pointer angle is calculated based on the slope of the line. When the pointer angle exceeds a predetermined value, the control unit sends a signal to the warning device.

[0054] Video / audio monitors are installed at the first waterproof and airtight door 9, the second waterproof and airtight door 10, the third waterproof and airtight door 11, the fourth waterproof and airtight door 12, the fifth waterproof and airtight door 13, and the sixth waterproof and airtight door 14. The acquisition ends of the video / audio monitors at each of these locations are all facing the airtight door and are used to monitor whether each waterproof and airtight door can be opened or closed normally.

[0055] Both vibration and temperature sensors are installed at the equipment in the central pump room and central substation, and are connected to the control unit. The vibration sensor collects vibration values ​​from the equipment in the central pump room and central substation and transmits these values ​​to the control unit. When the vibration sensor detects abnormal vibration data, the control unit sends a signal to the warning device. Similarly, the temperature sensor collects temperature values ​​from the equipment in the central pump room and central substation and transmits these values ​​to the control unit. When the temperature sensor detects abnormal temperature data, the control unit sends a signal to the warning device.

[0056] Several warning devices are installed in several lanes. The warning devices include warning lights and buzzer alarms. The warning lights have different colors and / or flashing frequencies.

[0057] The control unit can control the warning light to emit different colors and / or flashing frequencies to warn people based on the water level value corresponding to different water level conditions in the water tank; when the water level value corresponding to the water level condition is greater than or equal to the warning water level line, the buzzer alarm can emit sound to warn people.

[0058] When abnormal data is detected by the video / audio monitor, flow sensor, vibration sensor, and temperature sensor, the control unit can control the warning lights to emit different colors to provide an alert.

[0059] In this embodiment, the control unit includes a host computer and a slave computer, with the host computer connected to the slave computer via a communication module. The slave computer is connected to a liquid level sensor, a flow sensor, a vibration sensor, a temperature sensor, a video / audio monitor, and an alarm device.

[0060] Furthermore, the communication module includes a ground switch, an underground switch, and an Ethernet ring network; the ground switch and the underground switch are connected and communicate via the Ethernet ring network, the lower-level machine is connected to the underground switch, and the upper-level machine is connected to the ground switch.

[0061] In this embodiment, the control unit controls the opening or closing of the pneumatic shield gate 1, the first waterproof and airtight gate 9, the second waterproof and airtight gate 10, the third waterproof and airtight gate 11, the fourth waterproof and airtight gate 12, the fifth waterproof and airtight gate 13, and the sixth waterproof and airtight gate 14, as well as the number of water pumps put into operation, based on the water level of the water tank.

[0062] A method for emergency water level regulation of a central water tank in a coal mine, applied to the aforementioned emergency water level regulation system for a central water tank in a coal mine;

[0063] The water level conditions in the reservoir are set into three levels: low water level, medium water level, and warning water level. The water level value of the low water level < the water level value of the medium water level < the water level value of the warning water level. There are N water pumps in total, where the number of pumps is 1 ≤ n1. <n2<N;

[0064] When all level sensors detect that the water level in the water tank is lower than the low water level line, the control unit controls the third waterproof and airtight door 11 to close, and the pneumatic shield gate 1, the first waterproof and airtight door 9, the second waterproof and airtight door 10, the fourth waterproof and airtight door 12, the fifth waterproof and airtight door 13, and the sixth waterproof and airtight door 14 to open. (When the water level in the water tank is lower than the low water level line, due to the small amount of water flowing in, the water can enter the main water tank tunnel 2 and the auxiliary water tank tunnel 3 for temporary storage. At this time, since the small amount of water flowing in will not affect production activities, the water pump is not in operation, thereby reducing the energy consumption of the water pump. In addition, it can also reduce problems such as water pump dry suction and dry burning caused by insufficient water supply in the water tank.)

[0065] When at least one level sensor detects that the water level in the reservoir is greater than or equal to the low water level line, the control unit operates n1 water pumps to drain the water. (When the water level in the reservoir is greater than or equal to the low water level line, the gushing water can directly enter the central pump house 7 from the main reservoir tunnel 2 and the auxiliary reservoir tunnel 3. The gushing water in the drainage tunnel 4 enters the auxiliary reservoir tunnel 3 through the drainage tunnel 6. Due to the small amount of gushing water, the third waterproof and airtight door 11 of the water passage tunnel 5 remains closed, allowing the gushing water to be quickly discharged directly from the main reservoir tunnel 2 and the auxiliary reservoir tunnel 3 through the central pump house 7. The gushing water mainly enters the central pump house 7 from the main reservoir tunnel 2, with a small amount entering from the auxiliary reservoir tunnel 3, to improve the efficiency of the gushing water entering the central pump house 7.)

[0066] When at least one level sensor detects that the water level in the reservoir is greater than or equal to the level of the middle water line, the control unit controls the second waterproof and airtight door 10 to close, and the pneumatic shield gate 1, the first waterproof and airtight door 9, the third waterproof and airtight door 11, the fourth waterproof and airtight door 12, the fifth waterproof and airtight door 13, and the sixth waterproof and airtight door 14 all open; the control unit operates n2 water pumps to drain water; (when the level sensor detects that the water level in the reservoir is greater than or equal to the level of the middle water line, because...) The second waterproof and airtight door 10 is closed, allowing water to enter from the main water tank tunnel 2. The third waterproof and airtight door 11 is opened, allowing water to flow from the main water tank tunnel 2 through the third waterproof and airtight door 11 in the water passage tunnel 5 into the auxiliary water tank tunnel 3. At this time, the auxiliary water tank tunnel 3 acts as a flow regulating and buffering mechanism to prevent excessive water from entering the central pump house 7 from the main water tank tunnel 2, which would cause excessive drainage pressure in the central pump house 7 and overload the pumps. Simultaneously, water from the drainage tunnel 4 enters the auxiliary water tank tunnel 3 from the drainage tunnel 6.

[0067] When at least one level sensor detects that the water level in the water tank is greater than or equal to the warning water level, the control unit controls the first waterproof and airtight door 9 and the third waterproof and airtight door 11 to open, while the pneumatic shield gate 1, the second waterproof and airtight door 10, the fourth waterproof and airtight door 12, the fifth waterproof and airtight door 13 and the sixth waterproof and airtight door 14 are all closed; the control unit operates N water pumps to drain water. (When the pneumatic shield gate 1 rises to block water, the clearer water from the upper part can enter the main water tank tunnel 2, while the settled impurities remain at the bottom. This prevents the water from carrying a large amount of impurities into the central pump house 7 and clogging the pumps when the water volume is large. It should be noted that when the water volume is small, the impurities carried by the water into the central pump house 7 will gradually settle at the bottom of the water tank in the central pump house 7. With the second waterproof airtight door 10 and the fourth waterproof airtight door 12 closed, the water enters the main water tank tunnel 2 and is discharged into the central pump house 7. At the same time, some of the water enters the auxiliary water tank tunnel 3 through the water passage tunnel 5 and is discharged through the central pump house 7. At this time, the water in the drainage tunnel 4 does not enter the auxiliary water tank tunnel 3, and the water volume entering the central pump house 7 is controlled by the first waterproof airtight door 9. The fifth waterproof airtight door 13 and the sixth waterproof airtight door 14 can prevent water from entering the central pump house 7 and the central substation 8.)

[0068] Furthermore, the control unit controls the warning lights to emit different colors and / or flashing frequencies to provide warnings based on the water level values ​​corresponding to different water level conditions in the water tank.

[0069] When the water level corresponding to the water level condition is greater than or equal to the warning water level, the buzzer alarm will sound to warn the user.

[0070] Furthermore, the control unit controls the warning lights to emit different colors of light to provide a warning based on data monitored by the video / audio monitor, flow sensor, vibration sensor, and temperature sensor.

[0071] This concludes the detailed description of this embodiment in conjunction with the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the emergency water level regulation system and method for a central water tank in a coal mine according to the present invention.

[0072] Of course, the specific embodiments described above further illustrate the purpose, technical solution and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An emergency water level regulation system for a central water tank in a coal mine, characterized in that, Includes a pneumatic shield gate, an information acquisition unit, and a control unit; A pneumatic shield gate is installed at the entrance of the water tank. The water tank is divided into a main water tank tunnel and a secondary water tank tunnel. The main water tank tunnel is equipped with a first waterproof and airtight door, and the secondary water tank tunnel is equipped with a second waterproof and airtight door. A water passage tunnel is set between the main water tank tunnel and the secondary water tank tunnel, and a third waterproof and airtight door is installed in the water passage tunnel. The ends of both the main water tank tunnel and the secondary water tank tunnel are connected to the central pump room. When the pneumatic shield gate is raised to block the water, the clearer water from the top can enter the main water tank tunnel, while the settled impurities remain at the bottom. This prevents the water from carrying a large amount of impurities into the central pump room and clogging the pumps when the water volume is large. A drainage tunnel is provided between the spillway tunnel and the auxiliary water storage tunnel, and the drainage tunnel is equipped with a fourth waterproof and airtight door; The information acquisition unit includes a liquid level sensor and a flow sensor. The liquid level sensor is installed in the main water tank tunnel, the auxiliary water tank tunnel, and the drainage tunnel. The liquid level sensor is used to monitor the water level value in the main water tank tunnel, the auxiliary water tank tunnel, and the drainage tunnel. The flow sensor is installed on the water pump in the central pump house. The flow sensor is used to monitor the drainage volume of the water pump. The information acquisition unit transmits the collected water level values ​​in the main water tank tunnel, the auxiliary water tank tunnel, and the drainage tunnel, as well as the water pump discharge volume, to the control unit. The control unit connects to the control terminals of the first waterproof and airtight door, the second waterproof and airtight door, the third waterproof and airtight door, the fourth waterproof and airtight door, the pneumatic shield gate, and the water pump.

2. The emergency water level regulation system for a central water tank in a coal mine according to claim 1, characterized in that, A fifth waterproof and airtight door is installed at the passage connecting to the central pump room, and a sixth waterproof and airtight door is installed at the passage connecting to the central substation. The control unit is connected to the control terminals of the fifth and sixth waterproof and airtight doors.

3. The emergency water level regulation system for a central water tank in a coal mine according to claim 2, characterized in that, The information acquisition unit also includes a video / audio monitor, a vibration sensor, and a temperature sensor; Video / audio monitors are installed at the central pump room, central substation, pneumatic shield gate, first waterproof and airtight door, second waterproof and airtight door, third waterproof and airtight door, fourth waterproof and airtight door, fifth waterproof and airtight door, and sixth waterproof and airtight door. The video / audio monitors are used to collect image / audio information and transmit the collected video / audio information to the control unit. Both vibration sensors and temperature sensors are installed at the equipment in the central pump room and central substation, and both are connected to the control unit. The vibration sensors are used to collect the vibration values ​​of the equipment in the central pump room and central substation and transmit the vibration values ​​to the control unit; the temperature sensors are used to collect the temperature values ​​of the equipment in the central pump room and central substation and transmit the temperature values ​​to the control unit.

4. The emergency water level regulation system for a central water tank in a coal mine according to claim 3, characterized in that, Several warning devices are installed in several lanes. The warning devices include warning lights and buzzer alarms. The warning lights have different colors and / or flashing frequencies.

5. The emergency water level regulation system for a central water tank in a coal mine according to claim 4, characterized in that, The control unit includes a host computer and a slave computer, and the host computer is connected to the slave computer through a communication module. The lower-level machine is connected to a liquid level sensor, a flow sensor, a vibration sensor, a temperature sensor, a video / audio monitor, and an alarm device.

6. The emergency water level regulation system for a central water tank in a coal mine according to claim 5, characterized in that, The communication module includes a ground switch, an underground switch, and an Ethernet ring network; The ground switch and the underground switch communicate via an Ethernet ring network. The lower-level computer is connected to the underground switch, and the upper-level computer is connected to the ground switch.

7. A method for emergency water level regulation in a central water tank of a coal mine, applied to the emergency water level regulation system for a central water tank of a coal mine as described in any one of claims 1 to 6, characterized in that, The water level conditions in the reservoir are set into three levels: low water level, medium water level, and warning water level. The water level value of the low water level < the water level value of the medium water level < the water level value of the warning water level. There are N water pumps in total, where the number of pumps is 1 ≤ n1. <n2<N; When all level sensors detect that the water level in the water tank is lower than the low water level line, the control unit controls the third waterproof and airtight door to close, while the pneumatic shield gate, the first waterproof and airtight door, the second waterproof and airtight door, the fourth waterproof and airtight door, the fifth waterproof and airtight door, and the sixth waterproof and airtight door are all opened. When at least one level sensor detects that the water level in the water tank is greater than or equal to the low water level line, the control unit operates n1 water pumps to drain the water. When at least one level sensor detects that the water level in the water tank is greater than or equal to the water level of the middle water level line, the control unit controls the second waterproof and airtight door to close, and the pneumatic shield gate, the first waterproof and airtight door, the third waterproof and airtight door, the fourth waterproof and airtight door, the fifth waterproof and airtight door and the sixth waterproof and airtight door are all opened, and n2 water pumps are run to drain water. When at least one level sensor detects that the water level in the water tank is greater than or equal to the warning water level, the control unit controls the first and third waterproof and airtight doors to open, while the pneumatic shield gate, the second waterproof and airtight door, the fourth waterproof and airtight door, the fifth waterproof and airtight door, and the sixth waterproof and airtight door are all closed, and N water pumps are run to drain water. When the pneumatic shield gate is raised to block the water, the clearer water from the top can enter the main water tank tunnel, while the settled impurities remain at the bottom. This prevents the water from carrying a large amount of impurities into the central pump room and clogging the pumps when the water volume is large.

8. The emergency water level regulation method for a central water tank in a coal mine according to claim 7, characterized in that, The control unit controls the warning lights to emit different colors and / or flashing frequencies to provide warnings based on the water level values ​​corresponding to different water level conditions in the water tank. When the water level corresponding to the water level condition is greater than or equal to the warning water level, the buzzer alarm will sound to warn the user.

9. A method for emergency water level regulation in a central water tank of a coal mine according to claim 7, characterized in that, The control unit controls the warning lights to emit different colors of light to provide a warning, based on data monitored by the video / audio monitor, flow sensor, vibration sensor, and temperature sensor.

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