An environmentally friendly emergency water supply system and method based on digital twins

Abstract

This invention relates to an environmentally friendly emergency water supply system and method based on digital twins. The system includes: a mobile pumping unit, a data acquisition and control center, and a digital twin platform. The mobile pumping unit includes a feed pump, a vehicle-mounted platform, electric valves, a pressure relief valve, a water tank, and connecting pipelines. The data acquisition and control center includes a distributed acquisition module and a control service module. The digital twin platform includes a digital twin, a performance analysis module, an operation decision-making module, and a human-computer interaction module. This invention enables digital mapping and intelligent simulation of all elements of the physical water flow area and the entire process of water supply management activities. It also enables synchronous simulation operation, virtual-real interaction, and iterative optimization of the physical watershed, improving the real-time performance and operational safety of the emergency water supply system equipment.

Description

Technical Field

[0001] The present invention relates to the field of emergency rescue technology, and in particular to water lifting equipment and system intelligent control methods, and specifically to an environmentally friendly emergency water supply system and method based on digital twins. Background Art

[0002] In recent years, natural disasters have occurred frequently around the world, especially in western my country, which is not only a frequent area of ​​geological disasters such as earthquakes and landslides, but also a severely affected area of ​​seasonal droughts. Emergency water supply is a lifeline project for post-disaster survival. Due to the complex terrain and harsh geological conditions in mountainous and remote disaster areas, emergency water supply guarantees at disaster sites pose huge challenges. The existing vehicle-mounted water supply system does not take into account the passability of disaster roads and the environmental integration of the post-disaster site. In addition, the water-lifting equipment is heavy, energy-intensive, noisy, and has a low degree of intelligence. The post-disaster site situation is complex, and the optimal operating conditions of the equipment do not match the water needs of the affected people.

[0003] Digital twins use data such as physical models, sensor updates, and operation history to map physical objects in a digital form in a virtual environment, and reflect their entire life cycle process through twins. A comprehensive real-time or quasi-real-time connection can be established between the physical object and the digital twin, so that the operating status of the physical object can be reflected in real time and accurately in the virtual space, realizing the two-way flow of information, and the physical object can be precisely controlled using the information feedback mechanism. Digital twins can manage physical objects in a virtual environment, and through continuous iteration and optimization, it can reduce personnel input, improve efficiency and save costs. Therefore, the present invention proposes an environmentally friendly emergency water supply system and method based on digital twins to address the deficiencies in the prior art. Summary of the invention

[0004] In response to the above problems, the purpose of the present invention is to propose an emergency water supply system and method based on digital twins, so as to realize synchronous simulation operation, virtual-reality interaction, and iterative optimization with the physical watershed, and improve the real-time interactive control and operational safety of the emergency water supply system equipment.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an emergency water supply system based on digital twins, comprising a mobile pumping unit, a data acquisition and control center and a digital twin platform, the mobile pumping unit comprising a water feeding pump, a vehicle-mounted platform, an electric valve, a pressure relief valve and a water tank connected together by connecting pipes, the data acquisition and control center comprising a distributed acquisition module and a control service module, the distributed acquisition module including but not limited to pressure sensors, flow sensors, displacement sensors, collecting real-time operating status data of the emergency water supply system, and storing the collected operating data; the control service module receives operating control instructions from the digital twin platform and external input, and sends the operating control instructions to the corresponding equipment of the mobile pumping unit to control the operating status of the equipment.

[0006] In the above scheme, the digital twin platform includes a digital twin, a performance analysis module, an operation decision module and a human-computer interaction module. The digital twin is a real-time mapping of a mobile pumping unit driven by twin data, which realizes the visualization of the twin objects, twin processes and twin regulation of the mobile pumping unit. The performance analysis module learns the operation data and control scheme based on the machine learning model, updates and modifies the digital twin, and evaluates the operating status of the mobile pumping unit; the operation decision module makes control decisions such as speed change, valve opening adjustment and shutdown according to the evaluation results of the performance analysis module, and issues an alarm when the outlet pressure of the mobile pumping unit exceeds the safety value or a fault occurs; the human-computer interaction module visually expresses the digital twin, control decision and warning information of the mobile pumping unit.

[0007] In the above scheme, the water feeding pump transports water from the water source to the vehicle-mounted platform; after receiving the instruction, the vehicle-mounted platform enters the site to carry out water extraction operations; the electric valve controls the system flow by changing the valve opening; the pressure relief valve is used to eliminate transient high pressure under abnormal working conditions; the water tank is used to store and collect water flow from the vehicle-mounted platform to provide water source for the water use installation point.

[0008] In the above scheme, the twin data includes equipment parameters, assembly relationships, operating data and environmental data of the mobile pumping unit.

[0009] In the above scheme, the vehicle-mounted platform includes a box-type motor vehicle, a filter, a diesel engine, a clutch speed increaser, and a high-pressure water pump. The box-type motor vehicle is provided with a shock-absorbing frame and a box body. The filter, diesel engine, clutch speed increaser, and high-pressure water pump are installed on the shock-absorbing frame. The box body adopts an open soundproof window to block the radiated noise; the filter filters the sand and air in the water source flow; the diesel engine provides a power source for the high-pressure water pump; the clutch speed increaser is used to expand the speed variation range of the diesel engine; the high-pressure water pump is a low-power, multi-operating-condition, high-lift multi-stage pump driven by a diesel engine to transport the water source flow to the water tank.

[0010] In the above scheme, the surface of the open soundproof window is arranged with hook-shaped ultra-thin broadband acoustic metasurface units, which produce an all-round soundproof effect through different combination arrangements.

[0011] In the above scheme, the diesel engine is cooled by a water cooling system, the inlet of the water cooling system is connected to the outlet of the filter, and the outlet of the water cooling system is connected to the inlet of the water pump.

[0012] In the above scheme, the high-pressure water pump adopts a modular structure, and the number of pump stages is increased or decreased according to different scene requirements.

[0013] The present invention also provides an emergency water supply method based on digital twins, comprising the following steps: Step 1: Path survey, using drones to conduct path surveys from water sources to water use resettlement points in mountainous areas and remote disaster-stricken areas; Step 2: Equipment deployment, deploying various equipment of the emergency water supply system according to environmental data, connecting the equipment through pipes, and uploading relevant data to the digital twin platform; Step 3: Digital model establishment, constructing a digital twin model of the emergency water supply system based on equipment parameters, assembly relationships, operating data and environmental data of the emergency water supply system; Step 4: Performance analysis, performing simulation calculations based on real-time operating data, analyzing the operating status of the mobile pumping system through a performance analysis module, and updating the digital twin model; Step 5: Optimization and control, under the premise of ensuring the water demand of the water use resettlement point, outputting a control plan based on the performance analysis results, so that the emergency water supply system can be energy-efficient and operate safely.

[0014] In the above scheme, in step 1, the water source includes rivers, lakes and groundwater sources; in step 2, the environmental data includes the longitude and latitude of the disaster-stricken area, the location of the water source, and geological characteristics; in step 3, the digital twin model is implemented based on the Unity3D physics engine; in step 4, the real-time operation data includes the water tank water level, diesel engine speed, valve opening, pipeline flow and pipeline pressure; in step 5, the control plan takes the diesel engine speed and the high-pressure water pump valve opening as the control objects, and the emergency water supply system outlet water pressure and flow as the control targets.

[0015] Beneficial effects of the invention: The emergency water supply system and method based on digital twins of the invention take the physical water flow area as the unit, spatiotemporal data as the basis, mathematical models as the core, and water conservancy knowledge as the driving force, and digitally map and intelligently simulate all elements of the physical water flow area and the entire process of water supply management activities, realize synchronous simulation operation, virtual-reality interaction, and iterative optimization with the physical watershed, and improve the real-time interactive control of emergency water supply system equipment and operational safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a structural schematic diagram of an emergency water supply system based on digital twin provided by the present invention.

[0018] Figure 2 This is a schematic structural diagram of a mobile pumping unit provided by the present invention.

[0019] Figure 3 The figure is a left view of a vehicle-mounted platform provided by the present invention.

[0020] Figure 4 for Figure 3 Top view of the .

[0021] Figure 5 This is a schematic diagram of the structure of a hook-shaped ultra-thin broadband acoustic metasurface unit provided by the present invention.

[0022] Figure 6 The figure is a distribution diagram of the transmitted sound pressure field corresponding to the incident point sound sources on both sides of the soundproof window provided by the present invention.

[0023] Figure 7 The present invention provides a high-pressure water pumping pump head (pressure) - flow characteristic curve.

[0024] Figure 8 A diagram of an emergency water supply control model provided by the present invention.

[0025] Fig. 9 This is a speed change regulation control principle diagram provided by the present invention.

[0026] Fig.10 A flowchart for building a digital twin model provided by the present invention.

[0027] In the figure: 1-box-type motor vehicle; 2-filter; 3-diesel engine; 4-clutch speed increasing box; 5-high-pressure water pump; 6-shock-absorbing frame; 7-box; 8-soundproof window; 9-water inlet; 10-water outlet pipe. DETAILED DESCRIPTION

[0028] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0029] An emergency water supply system based on digital twins is provided in an embodiment of the present invention, such as Figure 1 As shown, it includes a mobile pumping unit, a data acquisition and control center, and a digital twin platform. The mobile pumping unit includes a water feeding pump, a vehicle-mounted platform, an electric valve, a pressure relief valve, a water tank, and connecting pipes. The data acquisition and control center includes a distributed acquisition module and a control service module. The digital twin platform includes a digital twin, a performance analysis module, an operation decision module, and a human-computer interaction module.

[0030] In the embodiment of the present invention, the mobile pumping unit is as follows: Figure 2 As shown, the water feeding pump transports water from the water source to the vehicle-mounted platform; after receiving the instruction, the vehicle-mounted platform enters the site to carry out water extraction operations; the electric valve controls the system flow by changing the valve opening; the pressure relief valve is used to eliminate transient high pressure under abnormal working conditions; the water tank is used to store and collect water flow from the vehicle-mounted platform to provide water source for water use installation points; the connecting pipe is used to connect the various components of the mobile pumping unit.

[0031] In the embodiment of the present invention, the vehicle-mounted platform is as follows: Figure 3 and Figure 4 As shown, it includes a box-type motor vehicle, a filter, a diesel engine, a clutch speed increaser, and a high-pressure water pump; wherein the box-type motor vehicle is provided with a shock-absorbing frame and a box body, the filter, the diesel engine, the clutch speed increaser, and the high-pressure water pump are installed on the shock-absorbing frame, the box body adopts an open soundproof window, and a hook-shaped ultra-thin broadband acoustic metasurface unit is arranged to block the radiated noise; the filter filters the sand and air in the water source flow; the diesel engine provides a power source for the high-pressure water pump, which is cooled by a water cooling system, the inlet of the water cooling system is connected to the outlet of the filter, and the outlet of the water cooling system is connected to the inlet of the water pump; the clutch speed increaser is used to expand the speed variation range of the diesel engine; the high-pressure water pump is a low-power, multi-operating-condition, high-lift multi-stage pump driven by a diesel engine, which transports the water source flow to the water tank, and the multi-stage pump adopts a modular structure, and the number of pump stages is increased or decreased according to different scene requirements.

[0032] In an embodiment of the present invention, the distributed acquisition module includes but is not limited to pressure sensors, flow sensors, and displacement sensors, which collect real-time operating status data of the emergency water supply system and store the collected operating data; the control service module receives operating control instructions from the digital twin platform and external input, and sends the operating control instructions to the corresponding equipment of the mobile pumping unit to control the operating status of the equipment.

[0033] In an embodiment of the present invention, the digital twin is a real-time mapping of a mobile pumping unit driven by twin data, which realizes the visualization of the twin object, twin process and twin control of the mobile pumping unit. The twin data includes equipment parameters, assembly relationships, operating data and environmental data of the mobile pumping unit; the performance analysis module learns the operating data and control scheme based on the machine learning model, updates and modifies the digital twin, and evaluates the operating status of the mobile pumping unit; the operation decision module makes control decisions such as speed change, valve opening adjustment and shutdown according to the evaluation results of the performance analysis module, and issues an alarm when the outlet pressure of the mobile pumping unit exceeds the safety value or a fault occurs; the human-computer interaction module visually expresses the digital twin, control decision and warning information of the mobile pumping unit.

[0034] The embodiment of the present invention also provides an emergency water supply method based on digital twin, including:

[0035] S1: Path survey, using drones to survey the path from water sources to water resettlement points in mountainous areas and remote disaster-stricken areas;

[0036] S2: Equipment deployment: deploy various equipment of the emergency water supply system according to environmental data, connect the equipment through pipelines, and upload relevant data to the digital twin platform;

[0037] S3: Digital model establishment, based on equipment parameters, assembly relationships, operating data and environment of the emergency water supply system

[0038] Data builds a digital twin model of the emergency water supply system;

[0039] S4: Performance analysis: perform simulation calculations based on real-time operation data, analyze the operation status of the mobile pumping system through the performance analysis module, and update the digital twin model;

[0040] S5: Optimize control. On the premise of ensuring the water demand at the water placement point, output the control plan based on the performance analysis results to make the emergency water supply system energy-saving and safe.

[0041] In an embodiment of the present invention, in S1, the water source includes rivers, lakes and groundwater sources; in S2, the environmental data includes the longitude and latitude of the disaster-stricken area, the location of the water source, and geological characteristics; in S3, the digital twin model is implemented based on the Unity3D physics engine; in S4, the real-time operation data includes the water tank water level, diesel engine speed, valve opening, pipeline flow and pipeline pressure; in S5, the control plan takes the diesel engine speed and the high-pressure water pump valve opening as the control objects, and takes the emergency water supply system outlet water pressure and flow as the control targets.

[0042] In order to better understand the present invention, Figure 5 As shown, a hook-shaped ultra-thin broadband acoustic metasurface unit is provided by the present invention, wherein a=20mm, w=2.5mm, b=10mm, e=1mm, and the parameter d is variable to realize reflection units with different phase delays. According to engineering experience, the noise in the frequency range of 2000-3000Hz emitted by rotating mechanical equipment has the greatest impact on the environment. Based on this, the ultrasonic structure is designed as follows: a single blade is 12cm long and 2cm high. The structures on the upper and lower sides of the blade are the same, and it is composed of 6 phase-controlled units with different parameters d; the parameters d of the 6 units are: 9.7mm, 7.9mm, 6.7mm, 5.6mm, 4.2mm and 10.4mm. Arrange the blades parallel to each other at 45° as shown in the figure. Figure 6 As shown in the figure, within the frequency range of 2110-3140Hz, the sound transmittance on both sides is less than 0.1, showing a good two-way sound insulation effect, greatly reducing the impact of equipment radiation noise on the local ecology. When the emergency water supply system is in operation, according to the equipment radiation noise and operating temperature, by changing the blade layout angle, the internal equipment is cooled while reducing the radiation noise.

[0043] In order to better understand the present invention, Figure 7 The figure shows the head (pressure)-flow characteristic curve of a high-pressure water pump provided by the present invention. The high-pressure water pump is a three-stage centrifugal pump driven by a diesel engine, and its performance parameters are: flow rate 36m 3 / h, head 360m, efficiency 52.5%. The rated fuel consumption of the diesel engine is 195g / kWh. When the diesel engine is in the rated state, the fuel consumption is extremely high. In actual operation, according to the water use level of the water tank on the mountain and the water collection condition of the front water tank, the digital twin platform is used for simulation calculation and optimization control to adjust the diesel engine speed and the opening of the high-pressure water pump valve, so as to save equipment energy consumption to the greatest extent without affecting the normal water supply. On the head (pressure)-flow characteristic curve, point A is transferred to point C, and the flow rate drops to 34m 3 / h, the pressure rises to 0.80MPa. During speed control, if you want to obtain the flow at point C, you should reduce the speed, and the working point changes from point A to point B. The flow is equal to the flow at point C, and the pressure is lower than that at points A and C. The water pressure at the water supply outlet still meets the water supply requirements through the compensation of the valve opening. Select points A and B to calculate the output power of the diesel engine shaft and compare them. It is calculated that energy consumption can be saved by 20%~30%.

[0044] In order to better understand the present invention, Figure 8 As shown, an emergency water supply control model provided by the present invention collects a series of operating data of the water feeding pump, valve, water tank, diesel engine and water pump through the distributed acquisition module. After the performance analysis of the digital twin platform, the control decision is made according to the analysis result, and the operation control instruction is sent to the corresponding equipment of the mobile pumping unit to control the diesel engine speed by controlling the diesel engine injection amount, and then control the output flow and pressure of the water pump; control the valve drive motor, adjust the valve opening, and coordinate the diesel engine speed change to control the output flow and pressure of the system.

[0045] In order to better understand the present invention, Fig. 9 As shown, a variable speed water supply mode control principle provided by the present invention is used. Through the feedback of the pressure sensor and the operation of the PID controller, the DRP system controls the speed of the diesel engine to change the water flow rate and head. During the operation of the emergency water supply system, the required flow rate and head are determined by the digital twin platform. When the flow demand increases, in order to achieve the purpose of reducing energy consumption, the head characteristics are used to compensate for the increased flow rate by increasing the opening of the valve; when the head demand increases, in order to achieve the purpose of reducing energy consumption, the flow characteristics are used to compensate for the increased head by reducing the opening of the valve.

[0046] In order to better understand the present invention, Fig.10 As shown in the figure, a digital twin model construction flow chart provided by the present invention includes: (1) using 3D modeling software to construct a 3D model of the main equipment of the emergency water supply system; (2) defining the attribute parameters of the 3D model of each equipment; (3) assembling the 3D model of each equipment according to the on-site layout; (4) rendering the model in 3D using the Unity3D physics engine.

[0047] In the embodiments of the present invention, the modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, and may be located in one place or distributed on multiple modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the embodiment.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An emergency water supply system based on digital twins, characterized in that: It includes a mobile pumping unit, a data acquisition and control center and a digital twin platform. The mobile pumping unit includes a water feeding pump, a vehicle-mounted platform, an electric valve, a pressure relief valve and a water tank connected together by connecting pipes. The data acquisition and control center includes a distributed acquisition module and a control service module. The distributed acquisition module includes but is not limited to a pressure sensor, a flow sensor, and a displacement sensor. It collects real-time operating status data of the emergency water supply system and stores the collected operating data; the control service module receives operating control instructions from the digital twin platform and external input, and sends the operating control instructions to the corresponding equipment of the mobile pumping unit to control the operating status of the equipment; the digital twin platform includes a digital twin The digital twin is a real-time mapping of the mobile pumping unit driven by twin data, which realizes the visualization of the twin object, twin process and twin regulation of the mobile pumping unit. The performance analysis module learns the operation data and control scheme based on the machine learning model, updates and modifies the digital twin, and evaluates the operation status of the mobile pumping unit; the operation decision module makes control decisions such as speed change, valve opening adjustment and shutdown according to the evaluation results of the performance analysis module, and issues an alarm when the outlet pressure of the mobile pumping unit exceeds the safety value or a fault occurs; the human-computer interaction module visually expresses the digital twin, control decision and warning information of the mobile pumping unit.

2. According to the digital twin-based emergency water supply system of claim 1, it is characterized in that: The water feeding pump delivers water from the water source to the vehicle-mounted platform; after receiving the instruction, the vehicle-mounted platform enters the site to carry out water extraction operations; The electric valve controls the system flow by changing the valve opening; the pressure relief valve is used to eliminate transient high pressure under abnormal working conditions; the water tank is used to store and collect water flow from the vehicle-mounted platform to provide water source for water installation points.

3. According to the digital twin-based emergency water supply system of claim 1, it is characterized in that: The twin data includes equipment parameters, assembly relationships, operating data and environmental data of the mobile pumping unit.

4. The emergency water supply system based on digital twin according to claim 1, characterized in that: The vehicle-mounted platform includes a box-type motor vehicle, a filter, a diesel engine, a clutch speed increasing box, and a high-pressure water pump. The box-type motor vehicle is provided with a shock-absorbing frame and a box body. The filter, the diesel engine, the clutch speed increasing box, and the high-pressure water pump are installed on the shock-absorbing frame. The box body adopts an open soundproof window to block the radiated noise. The filter filters sand and air in the water source flow; the diesel engine provides a power source for the high-pressure water pump; The clutch speed increaser is used to expand the speed variation range of the diesel engine; the high-pressure water pump is a low-power, multi-operating-condition, high-lift multi-stage pump driven by a diesel engine, which delivers the water source flow to the water tank.

5. The emergency water supply system based on digital twin according to claim 4 is characterized in that: The surface of the open soundproof window is arranged with hook-shaped ultra-thin broadband acoustic metasurface units, which produce an all-round soundproof effect through different combination arrangements.

6. The emergency water supply system based on digital twin according to claim 4, characterized in that: The diesel engine is cooled by a water cooling system, the inlet of the water cooling system is connected to the outlet of the filter, and the outlet of the water cooling system is connected to the inlet of the water pump.

7. The emergency water supply system based on digital twin according to claim 4, characterized in that: The high-pressure water pump adopts a modular structure, and the number of pump stages can be increased or decreased according to different scene requirements.

8. A digital twin emergency water supply method based on the emergency water supply system according to claim 1, characterized in that: The following steps are involved: Step 1: Path survey: Use drones to survey the path from water sources to water resettlement points in mountainous areas and remote disaster-stricken areas; Step 2: Equipment deployment: deploy various equipment of the emergency water supply system according to environmental data, connect the equipment through pipelines, and upload relevant data to the digital twin platform; Step 3: Digital model establishment: construct a digital twin model of the emergency water supply system based on the equipment parameters, assembly relationships, operation data, and environmental data of the emergency water supply system; Step 4: Performance analysis: perform simulation calculations based on real-time operating data, analyze the operating status of the mobile pumping system through the performance analysis module, and update the digital twin model; Step 5: Optimize control. On the premise of ensuring the water demand of the water use placement point, output the control plan based on the performance analysis results to make the emergency water supply system energy-saving and safe.

9. The digital twin emergency water supply method according to claim 8, characterized in that: In step 1, the water sources include rivers, lakes and groundwater sources; in step 2, the environmental data include the longitude and latitude of the disaster-stricken area, the location of the water source, and the geological characteristics; in step 3, the digital twin model is implemented based on the Unity3D physics engine; in step 4, the real-time operation data includes the water tank water level, diesel engine speed, valve opening, pipeline flow and pipeline pressure; in step 5, the control plan takes the diesel engine speed and the high-pressure water pump valve opening as the control objects, and the emergency water supply system outlet water pressure and flow as the control targets.

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