Intelligent start-stop control system and control method for mine drainage pump

Abstract

The invention discloses an intelligent start-stop control system and method for a mine drainage pump, and particularly relates to the technical field of drainage control, and the system comprises a dynamic water level monitoring module, a prediction analysis module, a multi-stage temperature sensing unit and an intelligent control module. Through the arrangement of the dynamic water level monitoring module and the prediction analysis module, water level data of a sump in a mine can be collected in real time, the water level change rate is calculated, the water inflow trend in the future TI time period is predicted, and when the water level change rate exceeds a preset threshold value or the water amount is predicted to be increased sharply, an emergency drainage mode can be started; all available water pumps are started, a peak-avoiding and valley-filling strategy is shielded, through combination of a dynamic water level monitoring module and an emergency drainage mode, dynamic control of the system on water level changes can be ensured, the risk of well flooding caused by too high water level can be effectively avoided, the probability of occurrence of waterlogging or water permeation accidents in a mine is reduced, and underground operation safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of drainage control. More specifically, the present invention relates to an intelligent start-stop control system and control method for a mine drainage pump. Background Art

[0002] The mine drainage system is one of the core facilities to ensure the safe production of mines. The mine drainage system belongs to the cross-field of mine safety engineering and automation technology, and is designed specifically for underground operation scenarios such as mine shafts and roadways, aiming to achieve efficient and intelligent drainage management, solve safety hazards such as groundwater leakage and water inrush, and ensure the safety of mine operations and the stable operation of equipment.

[0003] However, in extreme weather (such as heavy rain) or sudden geological changes (such as the penetration of underground aquifers), the mine water inflow may increase sharply in a short period of time. The traditional system relies on a fixed-threshold water level trigger mechanism (such as a single liquid level sensor), which only starts the water pump when the water level reaches the preset upper limit, lacking the ability to monitor and predict the water level change rate in real time, resulting in a lag in response, making it difficult to cope with the non-linear surge of water inflow in a timely manner, leading to a risk of drainage lag and water level exceeding the standard, seriously threatening the safety of underground operations. And when the water inflow is at a high level for a long time, the water pump needs to run at full load continuously to maintain the drainage demand, which causes the equipment to operate at high temperature for a long time, accelerating problems such as motor insulation aging and bearing wear, and even causing fires or equipment downtime, affecting the equipment life.

[0004] The present invention provides an intelligent start-stop control system and control method for a mine drainage pump, aiming to solve the problems that the mine water inflow increases sharply in a short period of time, the traditional system is difficult to cope with the non-linear surge of water inflow in a timely manner, seriously threatening the safety of underground operations, and when the water inflow is at a high level for a long time, the water pump needs to run at full load continuously, affecting the equipment life. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligent start-stop control system and control method for a mine drainage pump to solve the problems raised in the above background art, that is, the mine water inflow increases sharply in a short period of time, the traditional system is difficult to cope with the non-linear surge of water inflow in a timely manner, seriously threatening the safety of underground operations, and when the water inflow is at a high level for a long time, the water pump needs to run at full load continuously, affecting the equipment life.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An intelligent start-stop control system for a mine drainage pump, comprising:

[0007] A dynamic water level monitoring module, which is used to monitor the water level of the underground sump in the mine in real time and calculate the water level change rate, and trigger an emergency drainage mode when the water level rising rate exceeds a preset threshold;

[0008] Prediction analysis module, integrating machine learning models, predicts future drainage requirements based on historical water inflow, real-time water level and external meteorological data, and generates pre-start instructions;

[0009] Multi-level temperature sensing unit, which collects the temperature data of the pump motor in real time;

[0010] Intelligent control module, configured to dynamically adjust the operation priority of the pump according to the water level change, temperature data and prediction results, and perform start-stop operations.

[0011] Preferably, in the emergency drainage mode, all available pumps are automatically enabled and the peak shaving and valley filling strategy is blocked.

[0012] Preferably, it further includes:

[0013] Temperature adaptive regulation unit, when it detects that the pump temperature exceeds the safety threshold, triggers the forced cooling device and switches to the standby pump;

[0014] Variable frequency speed regulation module, realizes dynamic matching of drainage volume by adjusting the speed of the pump motor, and maintains low-speed operation within the water level buffer interval to reduce the start-stop frequency.

[0015] Preferably, the intelligent control module further includes:

[0016] Delay judgment logic unit, when the water level is close to the start-stop threshold, delays the preset time to confirm the continuous trend of the water level before performing the operation;

[0017] Dynamic priority scoring unit, generates a comprehensive score based on the pump operation efficiency, cumulative working time and real-time temperature data, and preferentially enables the pump with a high score.

[0018] Preferably, it further includes a redundancy and fault tolerance mechanism, and the redundancy and fault tolerance mechanism includes:

[0019] Dual-pump hot standby configuration, at least one pump is kept in the standby state and self-checked regularly;

[0020] Dual-link communication module, uses wired and wireless dual channels to transmit control instructions to ensure the continuous operation of the system in case of a single-link failure.

[0021] Preferably, the system also integrates a digital twin simulation platform, which is used to simulate the drainage strategy under extreme water inflow scenarios and optimize the control algorithm parameters through historical operation data.

[0022] A method for intelligent start-stop control of mine drainage pumps includes the following steps:

[0023] S1: Collect the water level data in the mine sump in real time and calculate the water level change rate;

[0024] S2: Predict the water inflow trend within the future time period T1 through a machine learning model. The input data of the machine learning model includes historical water inflow, real-time water level, and external meteorological data;

[0025] S3: If the water level change rate exceeds the preset threshold or a significant water volume increase is predicted, trigger the emergency drainage mode, activate all available pumps, and disable the peak shaving and valley filling strategy;

[0026] S4: Real-time collect the temperature data of the pump motor. When the temperature exceeds the safety threshold, trigger the forced cooling device and switch to the standby pump;

[0027] S5: Set a dynamic water level buffer range. When the water level is within the buffer range, control the pump to run at a low speed through a frequency converter;

[0028] S6: When the water level approaches the start-stop threshold, delay for a preset time to confirm the continuous trend of the water level before performing the pump start-stop operation.

[0029] Preferably, perform multi-scenario simulation tests through a digital twin platform, and optimize the response threshold and delay parameters of the control strategy based on the test results.

[0030] The technical effects and advantages of the present invention:

[0031] 1. Through the settings of the dynamic water level monitoring module and the prediction and analysis module, the present invention can real-time collect the water level data of the underground sump in the mine, calculate the water level change rate, and predict the water inflow trend within the future time period TI. When the water level change rate exceeds the preset threshold or a significant water volume increase is predicted, the emergency drainage mode can be activated, all available pumps can be enabled, and the peak shaving and valley filling strategy can be disabled. Through the combination of the dynamic water level monitoring module and the emergency drainage mode, not only the real-time response ability and safety of the system are improved, but also the automation and intelligent management are realized. It can ensure the dynamic control of the system over the water level change, effectively avoid the risk of shaft flooding caused by too high water level, reduce the occurrence probability of mine waterlogging or water inrush accidents, and improve the safety of underground operations;

[0032] 2. Through the settings of the multi-level temperature sensing unit, on the one hand, the present invention can real-time collect the bearing temperature of the pump motor, the stator winding temperature, and the radiator efficiency data. When the temperature exceeds the safety threshold, the forced cooling device can be triggered and switched to the standby pump, which can ensure the comprehensive control of the equipment operation state, avoid equipment damage or safety accidents caused by too high temperature. On the other hand, it can dynamically adjust the start-stop sequence according to the pump efficiency, temperature state, and cumulative operation time, and preferentially use high-efficiency and low-consumption equipment, which can effectively prevent the motor from overheating and damage, reduce the equipment failure rate and maintenance cost, and thus extend the service life of the equipment;

[0033] 3. Through the setting of the variable frequency speed regulation module, when the water level is within the buffer range, the water pump is regulated to run at a low speed through the variable frequency speed regulation module. When the water level approaches the start-stop threshold, after a preset time delay, the water level trend is confirmed before performing the operation, avoiding frequent start and stop. By adjusting the rotational speed of the water pump motor through the variable frequency speed regulation module, the drainage volume is accurately matched with the real-time demand, reducing energy consumption and mechanical wear, thereby further extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the control flow of the water level change state of the present invention.

[0035] Figure 2 It is a schematic diagram of the control flow of the water volume prediction state of the present invention.

[0036] Figure 3 It is a schematic diagram of the control flow of the water pump temperature state of the present invention.

[0037] Figure 4 It is a schematic block diagram of the control system principle of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Embodiment 1

[0040] In extreme weather (such as heavy rain) or sudden geological condition changes (such as the penetration of underground aquifers), the mine water inflow may increase sharply within a short period of time. The traditional system relies on a fixed-threshold water level trigger mechanism (such as a single liquid level sensor), which only starts the water pump when the water level reaches the preset upper limit, lacking the ability to monitor and predict the real-time water level change rate, resulting in a lag in response and difficulty in coping with the non-linear surge of water inflow in a timely manner, leading to drainage lag and an increased risk of water level exceeding the standard, seriously threatening the safety of underground operations.

[0041] Refer to Figures 1 to 4 , an intelligent start-stop control system for a mine drainage pump according to an embodiment of the present invention includes a dynamic water level monitoring module, a prediction and analysis module, a multi-level temperature sensing unit, and an intelligent control module.

[0042] The dynamic water level monitoring module is used to monitor the water level in the mine sump in real time and calculate the water level change rate, and trigger the emergency drainage mode when the water level rising rate exceeds the preset threshold;

[0043] The prediction analysis module integrates a machine learning model to predict future drainage requirements based on historical water inflow, real-time water levels, and external meteorological data, and generates pre-start instructions.

[0044] The intelligent control module is configured to dynamically adjust the operation priority of the water pumps according to water level changes, temperature data, and prediction results, and perform start-stop operations.

[0045] In the emergency drainage mode, the system automatically activates all available water pumps and shields the peak shaving and valley filling strategy, and at the same time issues an audible and visual alarm signal and emergency operation guidelines through the human-machine interface.

[0046] The system also integrates a digital twin simulation platform to simulate drainage strategies in extreme water inflow scenarios and optimize the control algorithm parameters through historical operation data.

[0047] During actual operation, the dynamic water level monitoring module is used to collect the water level data of the underground sump in the mine in real time and calculate the water level change rate. At the same time, the prediction analysis module predicts the water inflow trend in the future TI time period, where T1 is a preset prediction time period parameter of the system. When the water level change rate exceeds the preset threshold or a significant increase in water volume is predicted, the intelligent control module activates the emergency drainage mode, activates all available water pumps and shields the peak shaving and valley filling strategy. It should be noted that if a significant increase in water volume is predicted, the standby pump is started in advance and the drainage strategy is adjusted, thereby enhancing the emergency response ability and providing more preparation time for dealing with emergencies.

[0048] In summary, through the settings of the dynamic water level monitoring module and the prediction analysis module, it is possible to collect the water level data of the underground sump in the mine in real time, calculate the water level change rate, and predict the water inflow trend in the future TI time period. When the water level change rate exceeds the preset threshold or a significant increase in water volume is predicted, the emergency drainage mode can be activated, all available water pumps can be activated, and the peak shaving and valley filling strategy can be shielded. Through the combination of the dynamic water level monitoring module and the emergency drainage mode, not only the real-time response ability and safety of the system are improved, but also automated and intelligent management is achieved, which can ensure the system's dynamic control of water level changes, effectively avoid the risk of shaft flooding caused by too high water level, reduce the occurrence probability of mine waterlogging or water inrush accidents, and improve the safety of underground operations.

[0049] Embodiment 2

[0050] Based on the above embodiment, when the water inflow is at a high level for a long time, the water pumps need to operate at full load continuously to maintain the drainage demand, which causes the equipment to operate over-temperature for a long time under high-temperature conditions, accelerating problems such as motor insulation aging and bearing wear, and even causing fires or equipment downtime, affecting the equipment life.

[0051] Reference Figures 1 to 4 , a multi-stage temperature sensing unit for collecting data on the temperature of the water pump motor bearings, the stator winding temperature, and the radiator efficiency in real time.

[0052] It further includes a temperature adaptive regulation unit and a variable frequency speed regulation module. When it is detected that the temperature of the water pump exceeds the safety threshold, the forced cooling device is triggered and the standby pump is switched to.

[0053] The variable frequency speed regulation module adjusts the rotational speed of the water pump motor to achieve dynamic matching of the drainage volume, and maintains low-speed operation within the water level buffer range to reduce the start-stop frequency.

[0054] The intelligent control module further includes a delay judgment logic unit and a dynamic priority scoring unit. When the water level approaches the start-stop threshold, the delay judgment logic unit delays for a preset time to confirm the continuous trend of the water level before performing an operation.

[0055] The dynamic priority scoring unit generates a comprehensive score based on the operation efficiency, cumulative working time, and real-time temperature data of the water pump, and preferentially enables the water pump with a high score.

[0056] The system is set with a redundant fault tolerance mechanism, including a dual-pump hot standby configuration and a dual-link communication module;

[0057] The dual-pump hot standby configuration requires at least one water pump to be in the standby state and perform regular self-checks;

[0058] The dual-link communication module uses a wired and wireless dual-channel to transmit control instructions to ensure the continuous operation of the system in case of a single-link failure.

[0059] During actual operation, the multi-level temperature sensing unit is used to collect the temperature data of the water pump motor bearing, stator winding, and radiator efficiency in real time. When the temperature exceeds the safety threshold, the controller starts the forced cooling device and switches to the standby pump, which can ensure a comprehensive grasp of the equipment operation status, avoid equipment damage or safety accidents caused by overheating. At the same time, the start-stop sequence is dynamically adjusted according to the water pump efficiency, temperature status, and cumulative operation time, and high-efficiency and low-consumption equipment is preferentially used to reduce energy consumption. In addition, the standby pump needs to be run without load regularly to ensure that it is in a state where it can be immediately enabled, improving the drainage response speed;

[0060] By setting a buffer range, when the water level is within the buffer range, the variable frequency speed regulation module is used to adjust the water pump to run at a low speed. When the water level approaches the start-stop threshold, after delaying for a preset time, the water level trend (continuous rising / falling) is confirmed before performing an operation. The preset time can be two minutes to avoid frequent start-stop. The variable frequency speed regulation module adjusts the rotational speed of the water pump motor to make the drainage volume accurately match the real-time demand, reducing energy consumption and mechanical wear.

[0061] In summary, through the setting of the multi - level temperature sensing unit, on the one hand, it can collect the temperature data of the water pump motor bearing, stator winding and radiator efficiency in real time. When the temperature exceeds the safety threshold, it can trigger the forced cooling device and switch to the standby pump, ensuring a comprehensive grasp of the equipment operation status, avoiding equipment damage or safety accidents caused by overheating. On the other hand, it can dynamically adjust the start - stop sequence according to the water pump efficiency, temperature status and cumulative operation time, giving priority to using high - efficiency and low - consumption equipment, effectively preventing the motor from overheating and damage, reducing equipment failure rate and maintenance costs, and thus extending the service life of the equipment;

[0062] Through the setting of the variable - frequency speed - regulation module, when the water level is within the buffer range, the variable - frequency speed - regulation module adjusts the water pump to run at a low speed. When the water level is close to the start - stop threshold, after a preset time delay, the water level trend is confirmed before performing the operation, avoiding frequent start - stop. The variable - frequency speed - regulation module adjusts the speed of the water pump motor to make the drainage volume accurately match the real - time demand, reducing energy consumption and mechanical wear, and further extending the service life of the equipment.

[0063] Embodiment III

[0064] An intelligent start - stop control method for a mine drainage pump includes the following steps:

[0065] S1: Collect the water level data in the mine sump in real time and calculate the water level change rate;

[0066] S2: Predict the water inflow trend in the future T1 time period through a machine - learning model. The input data of the machine - learning model includes historical water inflow, real - time water level and external meteorological data;

[0067] S3: If the water level change rate exceeds the preset threshold or a sudden increase in water volume is predicted, trigger the emergency drainage mode, enable all available water pumps and shield the peak - shaving and valley - filling strategy;

[0068] S4: Collect the temperature data of the water pump motor bearing, stator winding and radiator efficiency in real time. When the temperature exceeds the safety threshold, trigger the forced cooling device and switch to the standby pump;

[0069] S5: Set a dynamic water level buffer range. When the water level is within the buffer range, control the water pump to run at a low speed through the frequency converter;

[0070] S6: When the water level is close to the start - stop threshold, delay for a preset time to confirm the continuous water level trend before performing the start - stop operation of the water pump, avoiding frequent switching.

[0071] The intelligent start - stop control method of the mine drainage pump in this embodiment is tested by multi - scenario simulation through a digital twin platform, including working conditions such as heavy rain, pipeline blockage and equipment failure, and the response threshold and delay parameters of the control strategy are optimized based on the test results.

[0072] Finally, the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An intelligent start-stop control system for a mine drainage pump, characterized in that, Comprising: A dynamic water level monitoring module, which is used to monitor the water level in the mine sump in real time and calculate the water level change rate, and trigger the emergency drainage mode when the water level rising rate exceeds the preset threshold; A prediction and analysis module, integrating a machine learning model, predicting the future drainage demand based on historical water inflow, real-time water level and external meteorological data, and generating a pre-start instruction; A multi-level temperature sensing unit, which collects the temperature data of the pump motor in real time; An intelligent control module, configured to dynamically adjust the operation priority of the pump according to the water level change, temperature data and prediction result, and perform start-stop operations.

2. The intelligent start-stop control system for a mine drainage pump according to claim 1, wherein In the emergency drainage mode, all available pumps are automatically enabled and the peak shaving and valley filling strategy is shielded.

3. The intelligent start-stop control system for a mine drainage pump according to claim 1, wherein It also includes: A temperature adaptive regulation unit, which triggers the forced cooling device and switches to the standby pump when it detects that the pump temperature exceeds the safety threshold; A variable frequency speed regulation module, which realizes dynamic matching of the drainage volume by adjusting the rotation speed of the pump motor, and maintains low-speed operation within the water level buffer interval to reduce the start-stop frequency.

4. The intelligent start-stop control system for a mine drainage pump according to claim 1, characterized in that, The intelligent control module further includes: A delay judgment logic unit, which delays a preset time to confirm the continuous trend of the water level before performing an operation when the water level is close to the start-stop threshold; A dynamic priority scoring unit, which generates a comprehensive score based on the pump operation efficiency, cumulative working time and real-time temperature data, and preferentially enables the pump with a high score.

5. The intelligent start-stop control system for a mine drainage pump according to claim 1, characterized in that, It also includes a redundancy and fault tolerance mechanism, and the redundancy and fault tolerance mechanism includes: A dual-pump hot standby configuration, with at least one pump kept in the standby state and self-checked regularly; A dual-link communication module, which uses a wired and wireless dual-channel to transmit control instructions to ensure the continuous operation of the system in case of a single-link failure.

6. The intelligent start-stop control system for the mine drainage pump according to claim 1, characterized in that, The system also integrates a digital twin simulation platform, which is used to simulate the drainage strategy under extreme water inflow scenarios, and optimize the control algorithm parameters through historical operation data.

7. An intelligent start-stop control method for a mine drainage pump, characterized in that Adopting the intelligent start-stop control system for mine drainage pumps according to any one of claims 1 to 6, including the following steps: S1: Collect the water level data in the mine sump in real time and calculate the water level change rate; S2: Predict the water inflow trend within the future T1 time period through a machine learning model, and the input data of the machine learning model includes historical water inflow, real-time water level and external meteorological data; S3: If the water level change rate exceeds the preset threshold or a water volume surge is predicted, trigger the emergency drainage mode, enable all available pumps and shield the peak shaving and valley filling strategy; S4: Collect the temperature data of the pump motor in real time, and trigger the forced cooling device and switch to the standby pump when the temperature exceeds the safety threshold; S5: Set a dynamic water level buffer interval, and when the water level is within the buffer interval, control the pump to run at low speed through the frequency converter; S6: When the water level is close to the start-stop threshold, delay the preset time to confirm the continuous trend of the water level, and then perform the pump start-stop operation.

8. The intelligent start-stop control method for a mine drainage pump according to claim 7, characterized in that, Conduct multi-scenario simulation tests through the digital twin platform, and optimize the response threshold and delay parameters of the control strategy based on the test results.

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