Intelligent anti-impact control method for mining remote water seal system

Abstract

The invention discloses an intelligent anti-impact control method for a mining remote water seal system. The method aims to solve the problem of water hammer impact caused by quick opening of a valve during remote quick water injection. The method comprises the steps that after a remote water injection instruction is received, a pneumatic valve is controlled to be opened; in the valve opening process, real-time pressure data in the water supply pipeline are obtained; and based on the real-time pressure data, the opening process of the pneumatic valve is intelligently adjusted so as to restrain pressure impact in the pipeline. The method is characterized in that the opening rate of the valve is nonlinearly adjusted according to the pressure safety margin ratio among the real-time pressure, the set maximum safety pressure threshold value and the target steady-state working pressure through a self-adaptive rate feed-forward control model. According to the invention, active suppression can be realized at the initial stage of water hammer impact formation, the pressure peak value is limited within a safety threshold value, and safe, rapid and self-adaptive anti-impact water injection control is realized.

Description

Technical Field

[0001] This invention relates to the field of coal mine safety technology, and more specifically, to an intelligent anti-impact control method for a remote water seal system used in mines. Background Technology

[0002] In coal mine production, to strengthen fire prevention and extinguishing management at the coal face and ensure safe production, mines need to install remotely controlled water seal systems. These systems typically include a water collection pit, an emergency water supply system, a drainage system, an industrial video system, and a remote control system. In the event of a fire or explosion, to meet the fire prevention and extinguishing requirements of coal mine safety regulations, the water seal system usually needs to rapidly inject water into the water collection pit within a short period (e.g., within several hours) via remote water supply (e.g., a total injection volume of up to 1000 m³) to quickly isolate the airflow at the coal face. This requires the emergency water supply system to have a high flow rate and high speed injection capacity (e.g., a supply capacity of not less than 80 m³ / h).

[0003] The existing remote control system mainly consists of an underground industrial ring network, a mine-use explosion-proof and intrinsically safe PLC (Programmable Logic Controller) control box, various sensors (such as gas, CO, wind speed, pressure, water level, and flow sensors), and mine-use pneumatic valves. Operators send commands from the ground control room via a host computer. After receiving the commands, the underground PLC control box controls the pneumatic valves on the emergency water supply pipeline to open and execute the water injection task.

[0004] However, existing technologies have serious drawbacks: to meet the requirements of rapid water injection at high flow rates (e.g., 80 m³ / h), the PLC must control large-diameter pipes (e.g., Pneumatic valves (100mm or larger) open rapidly. In such long-distance, large-diameter water supply networks, the rapid opening of valves (e.g., from fully closed to fully open within seconds) causes drastic changes in the velocity and momentum of the fluid within the pipeline. This dramatic change inevitably produces the "water hammer effect," i.e., instantaneous pressure surge.

[0005] The peak pressure of such pressure shock waves can far exceed the rated tolerance of pipelines and sensors. At best, this can cause pressure and flow sensors used for system feedback (for example, some pressure sensors may have a range of only 10 MPa) to become inaccurate or permanently damaged due to instantaneous over-range measurement; at worst, it can cause valve bodies, flange connections, or pipelines to rupture due to the instantaneous high-pressure impact. In the event of disasters such as fires or explosions, this systemic failure caused by improper control methods will prevent the water seal system from fulfilling its function of isolating airflow, with unimaginable consequences.

[0006] Therefore, how to intelligently control the valve opening process and actively eliminate or suppress catastrophic water hammer impacts while ensuring remote rapid water injection response capability is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0007] The main objective of this invention is to overcome the shortcomings of the prior art and provide an intelligent anti-impact control method for a remote water seal system for mining, thereby solving the technical problems existing in the prior art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A method for intelligent anti-impact control of a remote water seal system for mining, characterized by the following steps: S100: receiving a remote water injection command; S200: controlling a pneumatic valve to open based on the remote water injection command to inject water into a water accumulation pit; S300: acquiring real-time pressure data in a water supply pipeline during the opening of the pneumatic valve; S400: intelligently adjusting the opening process of the pneumatic valve based on the real-time pressure data to suppress pressure shocks in the water supply pipeline.

[0010] Furthermore, S300 includes: acquiring the real-time pressure data at a preset sampling period via a pressure sensor deployed upstream of the pneumatic valve.

[0011] Further, S400 includes:

[0012] S410: Set a maximum safe pressure threshold and a target steady-state working pressure S420: Based on the real-time pressure data The maximum safe pressure threshold and the target steady-state working pressure A pressure safety margin ratio is calculated in real time;

[0013] S430: Based on the aforementioned pressure safety margin ratio, adjust the opening rate of the pneumatic valve. .

[0014] Furthermore, in S430, the opening rate Determined through the following model: ,

[0015] in, Based on the startup rate, The real-time pressure data, The damping index and .

[0016] Furthermore, the method also includes:

[0017] S500: Increase the opening rate Multiply by a discrete time step The valve opening increment is obtained. ;

[0018] S600: Increment the valve opening degree Accumulated to the current valve opening Receive new valve opening command ;

[0019] S700: Controls the pneumatic valve to execute the new valve command opening degree. .

[0020] Furthermore, the method also includes: performing a system self-test step before the pneumatic valve is opened; the system self-test step includes: querying the battery management system of a mining uninterruptible power supply through a communication interface to obtain the state of charge of the mining uninterruptible power supply, and confirming that the state of charge is higher than a preset self-test threshold.

[0021] Furthermore, the method also includes:

[0022] S800: During the opening of the pneumatic valve, real-time flow data in the water supply pipeline is simultaneously acquired. ;

[0023] S900: Determine the valve command opening degree Whether it reaches 100%, and the real-time traffic data Has a target traffic been reached? ;

[0024] S1000: If the judgment in S900 is yes, then the intelligent anti-shock control method will be changed from being based on the real-time pressure data. The adaptive rate feedforward mode is switched to a mode based on the real-time traffic data. The steady-state flow PID control mode.

[0025] Furthermore, the method also includes: acquiring real-time water level data in the sump; and when the real-time water level data reaches a preset water level height, stopping the opening of the pneumatic valve and closing it.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1) This invention uses an adaptive rate feedforward control model based on the pressure safety margin ratio to monitor pressure in real time. And actively adjust the valve opening rate. This method does not respond passively after overpressure, but rather responds in the early stages of water hammer shock wave formation, when pressure... Still in Within the threshold, i.e. through nonlinear damping ( Actively and predictively reduce the valve opening rate, thereby proactively shaping the pressure curve and always limiting the pressure peak to the set maximum safe pressure threshold. Internally, this effectively avoids impact damage to pipelines, valves, and pressure sensors;

[0028] 2) The control algorithm of this invention does not require the establishment of a complex mine pipeline network fluid dynamics model; it only requires setting a few key operating parameters in the PLC (such as...). , It can automatically adapt to different initial states of the pipeline network and fluctuations in upstream water supply pressure, and has extremely strong robustness and adaptability to operating conditions;

[0029] 3) The algorithm of this invention ensures that pressure is safe (e.g., near (At that time), the valve operates at the fastest base rate. It activates, intelligently reducing speed only when there is a risk of pressure surge. This achieves an optimal balance between safety and efficiency, meeting the rapid water injection requirements of background technologies (such as 80 m³ / h).

[0030] 4) The hybrid mode of this invention ensures a smooth transition between the "anti-impact start-up" phase and the "steady-state flow maintenance" phase. It avoids the integral saturation or overshoot problems of traditional single-mode control (such as PID) during the startup phase, and also avoids secondary oscillations caused by control mode switching, thus ensuring the safety and efficiency of the entire water injection process. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a flowchart of the hybrid control process of the intelligent anti-impact control method of the present invention;

[0033] Figure 2 This is a schematic diagram of the hardware architecture of a remote water seal system for mining, according to an embodiment of the present invention. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following description will be provided in conjunction with the accompanying drawings of the embodiments of the present invention (…). Figures 1 to 2 This document provides a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] Example 1:

[0036] This embodiment describes a complete method from initiating a command from the ground control room to the formation of a water seal. The system hardware architecture on which this method depends is detailed in Embodiment 2, and the reference numerals (such as 101, 110, 111, etc.) used in this embodiment correspond to the components in Embodiment 2.

[0037] Step 1: System Standby and Self-Test

[0038] The system is in standby mode. PLC 110 maintains a heartbeat with the ground host computer 111 via the underground ring network 109. PLC 110 periodically polls the BMS of the mine UPS via RS485. The PLC reads the UPS's SOC (State of Charge). If the SOC is lower than (for example) 90% (a preset self-test threshold), the PLC sends a "low UPS power" alarm to the ground host computer 111 to remind maintenance.

[0039] Step 2: Receive instruction and check prerequisites (S100)

[0040] In the ground control room, the ground control computer 111 issues a "remote water injection" command (S100) due to a fire (e.g., CO sensor alarm) or explosion. PLC 110 receives the command. The PLC performs pre-checks:

[0041] 1) Check if the UPS SOC is > 50% (minimum operating threshold during a disaster).

[0042] 2) Check whether the pressure sensor 104, flow sensor 105, and water level sensor 106 are online (whether the 4-20mA signal is above 3.8mA).

[0043] 3) Check if the drainage system 107 is in a "stopped" state.

[0044] If the check passes, the PLC proceeds to step 3 and sets Control_Mode to 1.

[0045] Step 3: Activate the anti-shock activation (S200-S700)

[0046] The PLC 110 initiates the "Phase 1: Anti-impact Activation Phase" algorithm (Control_Mode = 1) detailed in Embodiment 3. The PLC 110 utilizes the parameters from Formula 1 detailed in Embodiment 2 and Table 1 in Embodiment 3. (S300) Real-time computing and with Periodic increase (S400, S500, S600) control the pneumatic valve 103 to open smoothly and quickly (S200, S700). Pressure Actively suppressed (8.0 MPa) or below.

[0047] Step 4: Real-time monitoring and display

[0048] Throughout steps 3 and 5, PLC 110 continuously uploads key data to the ground-based host computer 111. The host computer (111) interface simultaneously displays:

[0049] 1) Real-time pressure The curve (the operator can confirm that the anti-shock algorithm is effective, and the pressure is below 8.0 MPa).

[0050] 2) Valve opening degree curve.

[0051] 3) Real-time traffic curve.

[0052] 4) Real-time video from the outlet camera 108 (operators can visually confirm water output).

[0053] 5) Real-time video from camera 108 at the valve (operators can visually confirm valve operation).

[0054] Step 5: Switch to steady-state flow maintenance

[0055] When PLC 110 detects and At times (S800, S900), the system automatically switches from "Phase One" to "Phase Two" (S1000), executing the steady-state flow PID control detailed in Example 4, maintaining... Constant at (for example) 80 m³ / h.

[0056] Step 6: Water filling completed

[0057] In steps 3, 4, and 5, PLC 110 continuously monitors the water level sensor 106 in the sump. When the reading of the water level sensor 106 reaches the preset "sump line" (e.g., 2m above the tunnel roof), the PLC determines that a water seal has been formed. The PLC executes "anti-impact shutdown" (which can use the opposite rate control algorithm to the opening phase, i.e., preventing negative pressure water hammer when closing the valve), smoothly closes the pneumatic valve 103, and sends a "water seal formed" status report to the ground host computer 111. The system then returns to standby mode.

[0058] Example 3:

[0059] The core innovation of this invention lies in how to execute S200, S300 and S400, i.e. how to control the pneumatic valve 103 to open, after receiving the remote water injection command (S100) from the ground host computer 111 using the PLC control box 110 in Embodiment 4.

[0060] As described in the background section, when the PLC 110 attempts to perform a "normal rapid opening" (e.g., opening the valve from 0% to 100% within 1 second), The water velocity in a 100mm pipe 102 rapidly increases from 0 to high speed. This drastic velocity change inevitably leads to a catastrophic pressure surge (water hammer), with a peak pressure... Far exceeding the maximum safe pressure threshold This caused system damage.

[0061] 1) Limitations of conventional solutions:

[0062] Open-loop control operates in stages, for example, opening to 20%, waiting 10 seconds, and then opening to 100%. This is an example of open-loop control. It cannot sense the actual pressure within the pipeline. If a 10-second waiting time is too short for the current operating conditions (such as high upstream pressure), water hammer will still occur.

[0063] PID closed-loop control, employing a PID (proportional-integral-derivative) controller, attempts to respond to overpressure detection (…). The valve is only closed after the initial pressure surge of the water hammer. This is a reactive control mechanism. However, the first pressure surge of the water hammer propagates extremely quickly, and damage (e.g., the 10MPa range of the pressure sensor 104 is broken down) has already occurred before the PLC 110 and the pneumatic valve 103 have completed their response (one scan cycle plus valve action time).

[0064] The solution approach of this invention is as follows: Figure 2The flowchart illustrates that this invention proposes an "intelligent anti-impact control method." The core of this method is a hybrid control strategy combining "adaptive rate feedforward control based on pressure margin" and "steady-state flow PID control." This strategy no longer attempts to passively respond to overpressure, but actively and predictively manages the valve opening rate. (S430). It utilizes real-time pressure. (S300) serves as a feedforward signal, dynamically adjusted This proactively shapes the pressure curve, ensuring that its peak value never exceeds the set safety threshold. At the same time, ensure the valve opening degree Reach 100% as soon as possible.

[0065] The principle of the core algorithm: This invention defines the valve opening rate. for:

[0066] The essence of this algorithm lies in the "pressure safety margin ratio" term within the parentheses. This ratio reflects the current real-time pressure. How much of the preset safe working area was occupied? arrive ). Damping index ( This provides crucial nonlinear suppression.

[0067] Scenario A: Pressure safe.

[0068] Condition: When Operating pressure at or below the target steady state For example .

[0069] calculate: .at this time .

[0070] result: .

[0071] Principle: The system determines that the current pressure is safe and there is no risk of water hammer, therefore it operates at the maximum (basic) rate. Open the valve to ensure a "rapid response".

[0072] Scenario B: Pressure rises (water hammer begins).

[0073] Condition: When Start to rise, for example Rise to and When the median value is reached.

[0074] calculate: .at this time .

[0075] Result: If (quadratic damping). .

[0076] Principle: The pressure only utilizes 50% of the safety margin, but due to... The nonlinear damping effect has caused the opening rate to actively change from... Drama drops (A 75% decrease). This far-superlinear predictive deceleration actively suppresses the water hammer wave before it reaches its peak, mitigating changes in fluid momentum and preventing... It continues to climb.

[0077] Scenario C: Pressure is close to the threshold.

[0078] Condition: When Approaching or reaching the maximum safe pressure threshold hour.

[0079] calculate: .at this time .

[0080] result: .

[0081] Principle: The valve automatically stops opening (the rate drops to 0), actively maintaining the current opening degree, waiting for the pipeline pressure to drop automatically due to fluid friction or upstream fluctuations. When After the fall, Greater than 0 again It will also be greater than 0, and the valve will continue to open. This ensures... There will never be overshooting. This protects the pressure sensor 104 and the pipeline 102.

[0082] Example 4:

[0083] This embodiment details how the "adaptive rate feedforward control" proposed in Embodiment 3 is implemented through discretization within the PLC control box (110).

[0084] Phase 1: Shock Resistance Activation Phase. The goal of this phase is to: withstand pressure... No more than Under the premise of [the above conditions], open the valve as soon as possible. Increase from 0% to 100%.

[0085] In the PLC 110 configuration, set the following parameters (see Table 1):

[0086] Table 1: Parameter Table of Anti-Shock Control Algorithm

[0087]

[0088] In a PLC 110 interrupt service routine (cycle) Execute the following pseudocode logic (refer to...) Figure 2 Phase 1):

[0089] / / Global variable VAR_GLOBAL O_current : REAL := 0.0; / / Valve command opening (0-100%) Control_Mode : INT := 1; / / 1=Anti-impact, 2=PID / / Parameters (loaded from Table 1) P_max_safe : REAL := 8.0; P_op_target : REAL := 5.0; V_base : REAL := 10.0; Alpha : REAL := 2.0; Delta_T : REAL := 0.1; END_VAR / / Interrupt program (Cycle = 0.1s = Delta_T) PROGRAM Anti_Impact_ControlVAR P_current : REAL; / / Real-time pressure (MPa) P_Ratio : REAL; / / Pressure occupied ratio SMR : REAL; / / Pressure safety margin ratio V_current : REAL; / / Instantaneous opening rate (% / s) O_delta : REAL; / / Opening increment (%) Q_current : REAL; / / Real-time flow rate (m³ / h) END_VAR / / S100: Receive command (set by main program Control_Mode = 1) / / Mode 1: Anti-impact opening IF Control_Mode = 1 THEN / / S300: Obtain pressure P_current := Analog_In_Pressure(Channel_1); / / Read pressure sensor 104 / / S400 (S420, S430): Calculate rate (claim 4) IF P_current >= P_max_safe THEN V_current := 0.0; / / Case C: Pressure hit ELSE / / Calculate pressure occupancy ratio P_Ratio := (P_current - P_op_target) / (P_max_safe - P_op_target); P_Ratio := MAX(0.0, P_Ratio); / / To prevent calculation errors when P_current < P_op_target / / Calculate the Safety Margin Ratio (SMR) SMR := 1.0 - P_Ratio; / / Formula 1 V_current:= V_base * POW( SMR, Alpha ); / / V_base * (1-Ratio)^alpha END_IF / / S500: Calculate opening increment O_delta := V_current * Delta_T; / / Delta_O = V(t) * Delta_T / / S600: Accumulate opening O_current := O_current + O_delta; / / S700: Execute IF O_current >= 100.0 THEN O_current := 100.0; END_IF; Analog_Out_Valve(Channel_1, O_current); / / Drive pneumatic valve 103 / / --- Prepare to enter stage two--- / / S800: Get flow Q_current := Analog_In_Flow(Channel_2); / / Read flow sensor 105 / / S900: Determine switching conditions / / (Assuming target flow rate Q_target = 80 m³ / h) IF (O_current >= 100.0) AND (Q_current >= 80.0) THEN / / S1000: Switch mode Control_Mode := 2; / / Initialize PID controller (assuming PLC has built-in PID function block) PID_Controller.SetPoint := 80.0; / / Set target flow rate PID_Controller.Enable := TRUE; END_IF;END_IF; / / End Mode = 1.

[0090] Phase Two: Steady-State Flow Maintenance Phase

[0091] The switching condition (S900), as shown in the pseudocode above, is when PLC 110 detects that the valve is fully open ( ), and the traffic has reached the target ( When the system confirms that the "anti-impact activation" phase has been safely completed, the system will then take action.

[0092] In PID control mode (S1000), switch the PLC 110's Control_Mode to 2 (see reference). Figure 2 In Phase Two, the algorithm from Phase One is stopped, and its built-in PID function block is executed instead.

[0093] / / Mode 2: Steady-state flow PID IF Control_Mode = 2 THEN / / S800: Get flow rate (as the PID process variable PV) Q_current := Analog_In_Flow(Channel_2); / / PID calculation PID_Controller.ProcessVariable := Q_current; / / PID outputs new valve opening O(t) (as the PID control variable CV) O_current := PID_Controller.Run(); / / S700: Execute / / At this time, the valve may be fine-tuned around 100% due to upstream pressure fluctuations Analog_Out_Valve(Channel_1, O_current); END_IF;

[0094] The hybrid mode ensures the system is safe and shock-resistant during startup (Phase 1) and maintains a stable high flow rate during operation (Phase 2). Phase 1 addresses the water hammer problem in the background technology, while Phase 2 meets the (e.g.) 80 m³ / h water injection requirement in the background technology.

[0095] Example 2: System Hardware Architecture

[0096] The implementation of the method as described in Example 1 relies on a remote water seal system for mining. (Refer to...) Figure 1 This embodiment describes a typical hardware architecture of the system, deployed, for example, in a coal mining face, and its hardware architecture includes:

[0097] 1) A water collection pit 101 is arranged in, for example, the transport roadway (intake roadway) of the longwall mining face, to contain water and block airflow in the event of a disaster. The water collection pit is equipped with a "water level", which is, for example, not less than 2m above the roadway roof, and is equipped with a water level sensor 106 for monitoring the real-time water level.

[0098] 2) Emergency water supply system:

[0099] Water supply pipe 102, for example, can use a diameter not less than 100mm pipes are used to ensure water supply capacity (e.g., not less than 80m³ / h).

[0100] Pneumatic valve 103, a mining pneumatic valve, is installed on water supply pipeline 102 and is remotely controlled by PLC control box 110 as described below.

[0101] 3) Sensors:

[0102] The flow sensor 105 can be installed downstream of the pneumatic valve 103 to measure instantaneous flow rate. And the total cumulative amount. Its signal output can be 4-20mA analog current, and it can be equipped with an RS485 (Modbus / RTU protocol) digital communication interface.

[0103] Pressure sensor 104 is deployed upstream of pneumatic valve 103 to monitor real-time water pressure in the pipeline. In this embodiment, considering the possibility of pipeline pressure and water hammer impact, a pressure sensor with a range of (for example) 10 MPa can be selected, and its output signal is, for example, 4-20mA two-wire.

[0104] 4) Drainage system 107: A drainage system is installed at the bottom of the sump, such as equipped with dual water pumps and dual power supplies, for daily drainage of sump water.

[0105] 5) Industrial video system 108: Industrial video can be installed at the water outlet (water accumulation line) and remote water supply valve, so that the water outlet and valve operation can be clearly observed from the ground control room.

[0106] 6) Remote control system:

[0107] The underground ring network 109, for example, adopts a gigabit industrial Ethernet ring network to provide low latency, anti-interference, and high bandwidth communication. Its switch can be powered off without interrupting the network and connects the PLC control box (110) to the ground host computer 111.

[0108] Mining Uninterruptible Power Supply (UPS): For example, rated input AC127V, output DC24V / 10A. It powers the PLC 110 and sensors. Crucially, this UPS preferably has a Battery Management System (BMS) and supports Modbus / RTU communication. The PLC 110 can read its state of charge (SOC), fault status, and other data via RS485 bus to achieve the self-test function described in step 1 of Example 1.

[0109] The intrinsically safe and explosion-proof PLC control box 110 for mining applications includes: a power supply, DC24V (powered by the aforementioned UPS); an interface, featuring an Ethernet interface (for accessing the underground ring network 109); multiple analog input (AI) channels (for connecting the 4-20mA signals of pressure sensor 104 and flow sensor 105), digital output (DO) channels (for controlling the solenoid valve of pneumatic valve 103), and an RS485 interface (for connecting the UPS BMS and the flow meter 105 for digital communication); and a core function, the PLC (110) is configured to execute the intelligent anti-impact control method described in this invention (see Examples 1, 2, and 3 for details).

[0110] The ground-based host computer 111 is used by operators to send remote commands (S100) and monitor system status.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent anti-impact control method for a remote water seal system in mining, characterized in that, The method includes the following steps: S100: receiving a remote water injection command; S200: based on the remote water injection command, controlling a pneumatic valve to open to inject water into a sump; S300: during the opening of the pneumatic valve, acquiring real-time pressure data in a water supply pipeline; S400: based on the real-time pressure data, intelligently adjusting the opening process of the pneumatic valve to suppress pressure surges in the water supply pipeline.

2. The method according to claim 1, characterized in that, The S300 includes: acquiring the real-time pressure data at a preset sampling period via a pressure sensor deployed upstream of the pneumatic valve.

3. The method according to claim 1 or 2, characterized in that, The S400 includes: S410: Set a maximum safe pressure threshold and a target steady-state working pressure S420: Based on the real-time pressure data The maximum safe pressure threshold and the target steady-state working pressure A pressure safety margin ratio is calculated in real time; S430: Based on the aforementioned pressure safety margin ratio, adjust the opening rate of the pneumatic valve. .

4. The method according to claim 3, characterized in that, In S430, the opening rate Determined through the following model: ， in, Based on the startup rate, The real-time pressure data, The damping index and .

5. The method according to claim 4, characterized in that, The method further includes: S500: Increase the opening rate Multiply by a discrete time step The valve opening increment is obtained. ; S600: Increment the valve opening degree Accumulated to the current valve opening Receive new valve opening command ; S700: Controls the pneumatic valve to execute the new valve command opening degree. .

6. The method according to claim 1, characterized in that, The method further includes: performing a system self-test step before the pneumatic valve is opened; the system self-test step includes: querying the battery management system of a mining uninterruptible power supply through a communication interface, obtaining the state of charge of the mining uninterruptible power supply, and confirming that the state of charge is higher than a preset self-test threshold.

7. The method according to claim 5, characterized in that, The method further includes: S800: During the opening of the pneumatic valve, real-time flow data in the water supply pipeline is simultaneously acquired. ; S900: Determine the valve command opening degree Whether it reaches 100%, and the real-time traffic data Has a target traffic been reached? ; S1000: If the judgment in S900 is yes, then the intelligent anti-shock control method will be changed from being based on the real-time pressure data. The adaptive rate feedforward mode is switched to a mode based on the real-time traffic data. The steady-state flow PID control mode.

8. The method according to claim 1, characterized in that, The method further includes: acquiring real-time water level data in the sump; when the real-time water level data reaches a preset water level, stopping the opening of the pneumatic valve and closing it.

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