Energy recovery device and energy recovery method for mining blasting

Abstract

The application provides an energy recovery device and method for mining blasting. The device comprises: an energy recovery module for capturing and storing energy generated during the blasting process; an intelligent control module for monitoring and managing the entire energy recovery process; a safety monitoring module for real-time monitoring of the safety condition of the blasting operation, collecting and analyzing the data of the blasting operation site by using sensors and monitoring equipment; a power switching device module for rectification and inversion in the energy feedback system; and a heat exchange module for capturing the heat energy generated during the explosive explosion process and converting it into reusable energy. The application constructs a comprehensive system device integrating energy capture, storage, control and monitoring, which can effectively improve the energy recovery and utilization efficiency in the mining blasting process, reduce energy consumption and reduce the impact on the environment.

Description

Technical Field

[0001] This invention relates to the field of blasting energy recovery and energy development and utilization technology, and in particular to an energy recovery device and method for mining blasting. Background Technology

[0002] In mining engineering, blasting technology is an important mining method that plays a significant role in improving mining efficiency and reducing mining costs. However, traditional blasting techniques encounter the following technical problems during implementation:

[0003] 1) Energy waste problem: Most of the heat and impact energy generated during traditional blasting is directly emitted or lost into the environment, resulting in a large amount of energy waste. It is estimated that a medium-scale blasting operation generates tens to hundreds of tons of heat and impact energy. If this energy can be effectively recovered and utilized, it will play a key role in improving the energy efficiency of mining operations.

[0004] 2) Environmental pollution issues: The exhaust gases (such as carbon monoxide and nitrogen oxides) and dust generated during blasting will seriously affect air quality, especially threatening the surrounding environment of the mining area and the health of workers. At the same time, the shock wave from the explosion will also have an adverse impact on the surrounding ecosystem.

[0005] 3) Technical challenges: Developing a device that can efficiently recover energy generated during blasting and convert it into a reusable form requires solving a series of technical problems, including but not limited to: how to effectively collect and utilize the thermal and impact energy generated by the explosion, how to implement energy recovery without compromising mining efficiency and safety, and how to effectively convert the recovered energy into electricity or other forms of energy.

[0006] 4) System Integration and Optimization: Energy recovery devices not only need to operate efficiently and safely, but also need to be well integrated with existing mining equipment and technical systems to ensure the smooth operation of the entire mining process. Furthermore, the effective management and utilization of recovered energy is also a problem that needs to be addressed.

[0007] In conclusion, researching and developing an energy recovery device for mining blasting will not only help achieve efficient energy utilization and reduce energy waste, but also effectively mitigate the adverse environmental impact of blasting operations, thus realizing green and sustainable mining production. This will have a profound impact on improving the overall energy efficiency and environmental protection level of the mining industry. Summary of the Invention

[0008] The purpose of this invention is to provide an energy recovery device and method for mining blasting.

[0009] To achieve the above-mentioned objectives, the present invention provides an energy recovery device for mining blasting, which includes an energy recovery module, an intelligent control module, a safety monitoring module, a heat exchange module, and a power switching device module.

[0010] The energy recovery module is installed around the blasting area to capture and store the shock wave energy generated during the blasting process;

[0011] The safety monitoring module is deployed at the blasting operation site to monitor various safety parameters of the blasting operation in real time.

[0012] The heat exchange module is installed near the blast hole to capture the heat energy generated during the blasting process and convert it into reusable heat energy or electrical energy.

[0013] The power switching device module is electrically connected to the energy recovery module, the heat exchange module, and the intelligent control module, respectively, and is used to control the storage, conversion, and output of energy.

[0014] The intelligent control module is electrically connected to the energy recovery module, the heat exchange module, and the safety monitoring module, respectively. Based on the output data of the energy recovery module and the heat exchange module, it adjusts the operating parameters of the power switching device module to achieve energy storage and output.

[0015] As a further improvement of the present invention, the energy recovery device for mining blasting also includes an energy utilization module, which is connected to the energy recovery module and the heat exchange module respectively, for reusing the recovered electrical and thermal energy.

[0016] As a further improvement of the present invention, the energy recovery device for mining blasting also includes a data processing and analysis module, which is electrically connected to the energy recovery module, the heat exchange module and the safety monitoring module respectively, for collecting, processing and analyzing the working data from the energy recovery module, the heat exchange module and the safety monitoring module, in order to evaluate the performance and economic benefits of the energy recovery device for mining blasting.

[0017] As a further improvement of the present invention, the intelligent control module fuses the sensor data collected by the energy recovery module, heat exchange module, and safety monitoring module, and coordinates the energy recovery module, heat exchange module, and power switching device module according to the fused multi-source sensor data. The specific control strategy is as follows:

[0018] The energy capture parameters of the energy recovery module are optimized by controlling the maximum power point tracking algorithm program.

[0019] The heat exchange medium flow parameters of the heat exchange module are controlled by a combination of PID control algorithm and adaptive adjustment mechanism.

[0020] The output voltage and current of the power switching device module are controlled by a phase control program and a pulse width modulation program.

[0021] As a further improvement of the present invention, the energy recovery module includes an energy capture device and an energy storage device; the energy storage device includes, but is not limited to, a supercapacitor or a flywheel energy storage system.

[0022] As a further improvement of the present invention, the heat exchange module includes a heat energy conversion device, a pipeline, and a heat exchange medium; the heat exchange module is connected to a rupture hole through a high-temperature and high-pressure resistant pipeline; a heat exchange medium is provided inside the pipeline; the heat exchange medium is water, oil, or other high-temperature fluid;

[0023] The heat exchange medium circulates inside the pipeline to absorb the heat energy generated by the explosion and transport it to the heat energy conversion device.

[0024] As a further improvement of the present invention, the power switching device module adopts an IPM intelligent power module.

[0025] As a further improvement of the present invention, the safety monitoring module includes several sets of sensors and monitoring equipment for collecting and analyzing environmental data at the blasting operation site;

[0026] The sensors include vibration sensors, gas sensors, temperature sensors, and pressure sensors; the sensors are installed at one or more locations around the blasting hole, near the blasting operation safety warning line, or in the area where blasting personnel gather.

[0027] To achieve the above-mentioned objectives, the present invention also provides an energy recovery method for mining blasting, which uses the above-mentioned energy recovery device for mining blasting to recover energy, and includes the following steps:

[0028] S1 utilizes an energy recovery module to capture and store the energy generated during the blasting process; and an intelligent control module to monitor and manage the entire energy recovery process.

[0029] S2 utilizes a safety monitoring module to monitor the safety status of blasting operations in real time, and uses sensors and monitoring equipment to collect and analyze data from the work site; it also utilizes a power switching device module for rectification and inversion in the energy feedback system.

[0030] S3 utilizes a heat exchange module to capture the heat energy generated during the explosion of explosives and convert it into reusable energy, thereby realizing the recovery of blasting energy.

[0031] As a further improvement of the present invention, the control strategy of the intelligent control module in step S1 is as follows:

[0032] S11, Control strategy of the energy recovery module: The intelligent control module monitors the magnitude and duration parameters of the shock wave energy during the blasting process in real time, and dynamically adjusts the capture efficiency and storage capacity of the energy recovery module; the maximum power point tracking algorithm is used to optimize the energy capture process; the energy output power is adjusted according to the load demand to achieve load matching, and the stored energy is reasonably allocated using an energy management strategy;

[0033] S12, Control strategy of the heat exchange module: The flow rate of the heat exchange medium in the heat exchange module is adjusted by a PID control algorithm program to control the outlet temperature within the set range; the PID parameters are adaptively adjusted according to the ambient temperature and explosion energy factors; and over-temperature protection and pressure protection mechanisms are set at the same time.

[0034] S13, Control strategy for power switching device module: Use phase control program and pulse width modulation program to adjust the conduction angle of rectifier circuit and duty cycle of switching transistor to control output voltage; Use sinusoidal pulse width modulation program to generate sinusoidal output voltage; Set overcurrent protection, overvoltage protection and overtemperature protection mechanisms;

[0035] S14, System Integration and Optimization: The data collected by the energy recovery module, heat exchange module, and safety monitoring module are integrated and the system operating status is comprehensively analyzed; the intelligent control module coordinates and controls the working parameters of each module according to the integrated data to achieve efficient energy recovery, conversion, and output; the control parameters are optimized using genetic algorithms and particle swarm optimization algorithms to improve the overall system performance.

[0036] The beneficial effects of this invention are:

[0037] 1. The energy recovery device for mining blasting provided by this invention, through the comprehensive application of energy recovery (energy capture, conversion, and storage) technology, intelligent control technology, safety monitoring technology, and other optional technologies, achieves efficient recovery and reuse of energy generated during blasting, reducing energy consumption and production costs, and improving the overall efficiency and safety of mining operations. Through reasonable integrated design and parameter optimization, efficient recovery and utilization of blasting energy can be achieved, reducing mining costs, improving economic benefits, and minimizing environmental impact. This invention constructs a comprehensive system device integrating energy capture, storage, control, and monitoring, aiming to improve energy utilization efficiency in mining blasting processes, reduce energy consumption, and minimize environmental impact.

[0038] 2. The energy recovery device for mining blasting provided by this invention represents a significant technological advancement, addressing the existing technical problems of open-pit coal mine blasting energy recovery systems. Firstly, by introducing an intelligent control module, this invention can monitor and capture shock wave energy in real time, achieving efficient energy recovery and conversion. This significantly improves energy utilization and reduces energy consumption, effectively overcoming the technical shortcomings of existing technologies where energy after open-pit coal mine blasting is often wasted and not effectively recovered and utilized, resulting in significant energy waste and negative environmental impacts. Secondly, in terms of heat exchange module control, an advanced PID control algorithm and an adaptive adjustment mechanism are adopted. This allows for automatic adjustment of control parameters based on factors such as ambient temperature and explosion energy, improving the control accuracy and efficiency of the heat exchange module, ensuring the stability of the outlet temperature, and further enhancing the overall system performance. This effectively overcomes the technical problems of low control accuracy and low efficiency in existing technologies. Furthermore, this invention employs phase control and PWM control technologies to achieve precise control of output voltage and current, improving output waveform quality and enhancing system safety and reliability. Furthermore, this invention incorporates multiple protection mechanisms to effectively prevent equipment damage and safety accidents, overcoming the technical shortcomings of existing power switching device modules, which typically only possess basic rectification and inversion functions and lack precise control over output voltage and current. Finally, through system integration and optimization, this invention achieves collaborative operation between modules, improving the overall system performance. Simultaneously, optimization algorithms such as genetic algorithms and particle swarm optimization are used to optimize control parameters, further enhancing the system's control accuracy and efficiency. Integrating these technologies into a unified solution not only improves the operational efficiency of open-pit coal mine blasting energy recovery systems but also provides strong support for the sustainable development of the mining industry.

[0039] 3. The energy recovery device for mining blasting provided by this invention, in its design of the heat exchange medium, chooses circulating flow instead of unidirectional flow, which has the following advantages: First, continuous heat energy transfer and higher efficiency: Circulating flow ensures that the heat exchange medium continuously circulates within the pipe, thereby continuously absorbing the heat energy generated by the blasting and continuously transporting it to the heat energy conversion device. This method effectively avoids the problem of heat energy transfer interruption in unidirectional flow, ensuring the stability and efficiency of the system; Second, balanced heat energy utilization: Through circulating flow, the heat exchange medium can uniformly absorb the heat energy during the blasting process, and can be cooled and recycled after being transferred to the heat energy conversion device. This method can balance the heat demand of the system at different times, avoiding the problems of insufficient heat energy utilization or local overheating in unidirectional flow; Third, system controllability and safety: The circulating flow design makes the system's temperature control more flexible and stable. By adjusting the circulation velocity and flow rate, the overall system temperature can be better controlled, avoiding potential safety hazards caused by localized overheating. Fourth, the integrity of heat energy recovery: the circulating flow mode ensures that the heat exchange medium in the pipeline can still recover and continue to absorb residual heat energy after passing through the rupture hole. This is crucial for achieving efficient energy recovery and long-term system operation. Therefore, circulating flow provides higher efficiency, stability, and safety. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the energy recovery device for mining blasting provided by the present invention;

[0041] Figure 2 This invention provides a flowchart of a method for the intelligent control module to precisely control the operation of an energy recovery device through real-time data analysis and intelligent algorithms.

[0042] Figure 3 This is a flowchart of the energy recovery method for mining blasting provided by the present invention. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0045] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Please see Figure 1 As shown, the present invention provides an energy recovery device for mining blasting, comprising:

[0047] An energy recovery module, installed around the blasting area, is used to capture the energy of the shock wave generated by the blast and convert it into electrical energy for storage.

[0048] A heat exchange module, installed near the blast hole, is used to absorb the heat energy generated by the blast and convert it into usable heat energy or electrical energy.

[0049] The safety monitoring module is deployed at the blasting site in the open-pit coal mine to monitor various safety parameters during the blasting process in real time, including vibration intensity, gas concentration, and personnel location, to ensure operational safety.

[0050] The intelligent control module, connected to the energy recovery module, heat exchange module, and safety monitoring module, is used to adjust the operating parameters of the power switching device module based on the output data of the energy recovery module and heat exchange module, so as to achieve efficient energy storage and output.

[0051] The power switching device module, connected to the energy recovery module, heat exchange module, and intelligent control module, is used to control the storage, conversion, and output of electrical energy.

[0052] In some other embodiments, the energy recovery device for mining blasting further includes:

[0053] The data processing and analysis system is used to collect, process, and analyze data from the energy recovery module, heat exchange module, and safety monitoring module to evaluate the performance and economic benefits of the energy recovery system and provide a basis for subsequent optimization.

[0054] Energy utilization systems are used to utilize recovered electrical and thermal energy for lighting, ventilation, and transportation equipment in mines, or to connect surplus electricity to the power grid, as well as for heating and hot water supply in mines, in order to improve energy efficiency and reduce production costs.

[0055] In some specific embodiments, the energy recovery module includes an energy capture device and an energy storage device; the energy storage device adopts high-performance energy storage equipment, such as supercapacitors, flywheel energy storage systems, etc., which can absorb and release a large amount of energy in a very short time.

[0056] The intelligent control module uses real-time data analysis and intelligent algorithms to precisely control the operation of the energy recovery module, ensuring efficient energy recovery and reuse, optimizing the blasting operation process, and improving operational efficiency. This intelligent control module integrates real-time data acquisition and analysis, intelligent algorithm decision-making, precise control, and optimization of blasting operation processes. Specifically, the intelligent control module collects parameter data during the blasting operation in real time via a sensor network, including blasting pressure, temperature, and vibration. This data is transmitted wirelessly or via wired connection to the intelligent control module for analysis, identifying energy distribution and losses during the blasting process. Based on the real-time data analysis results, the intelligent control module formulates optimal energy recovery strategies using intelligent algorithms, including recovery timing and methods. It also utilizes historical data and machine learning algorithms to build predictive models to forecast energy demand during the blasting process. The intelligent control module generates corresponding control signals, which are transmitted to the energy recovery module (energy capture device, energy storage device), such as a recovery pump or generator, via a communication interface. This drives the module to operate according to a predetermined strategy and continuously receives feedback data from the equipment during operation, adjusting the control strategy in real time to ensure efficient energy recovery and reuse. Furthermore, the intelligent control module optimizes the blasting operation process based on energy recovery data, including adjusting the blasting sequence and reducing unnecessary waiting time, thereby improving blasting efficiency and reducing energy consumption and costs.

[0057] Please see Figure 2 As shown, the intelligent control module precisely controls the operation of the energy recovery module through real-time data analysis and intelligent algorithms, specifically including:

[0058] P1 utilizes high-performance sensors and data acquisition technology to ensure data accuracy and real-time performance.

[0059] P2 uses advanced algorithms to precisely control the energy recovery process based on real-time data.

[0060] Based on the analysis results of the intelligent algorithm, the intelligent control module generates precise control strategies, including the opening and closing of the energy capture device, the charging and discharging management of the energy storage device, and the fault diagnosis and early warning of the equipment.

[0061] The safety monitoring module monitors the status of the energy recovery system in real time by installing sensors and monitoring equipment. Once an abnormality is detected, such as equipment failure or energy leakage, emergency measures are immediately activated to ensure the safety of personnel and equipment.

[0062] The power switching device module adopts an IPM intelligent power module, such as the Fujifilm 7MBP75RA120 module, which has the advantages of low power consumption, high performance and overheat protection.

[0063] Please see Figure 3 As shown, the specific process of the energy recovery method used in mining blasting is as follows:

[0064] S1, using an energy recovery module, is responsible for capturing and storing the energy generated during the blasting process; using an intelligent control module, it is responsible for monitoring and managing the entire energy recovery process.

[0065] S2 utilizes a safety monitoring module to monitor the safety status of blasting operations in real time, and uses sensors and monitoring equipment to collect and analyze data from the work site; it also utilizes a power switching device module for rectification and inversion in the energy feedback system.

[0066] S3 uses a heat exchange module to capture the heat energy generated during the explosion of explosives and convert it into reusable energy.

[0067] The control strategy of the intelligent control module in step S1 is as follows:

[0068] S11, Control strategy of the energy recovery module: The intelligent control module monitors the magnitude and duration parameters of the shock wave energy during the blasting process in real time, and dynamically adjusts the capture efficiency and storage capacity of the energy recovery module; the maximum power point tracking algorithm is used to optimize the energy capture process; the energy output power is adjusted according to the load demand to achieve load matching, and the stored energy is reasonably allocated using an energy management strategy;

[0069] S12, Control strategy of the heat exchange module: The flow rate of the heat exchange medium in the heat exchange module is adjusted by a PID control algorithm program to control the outlet temperature within the set range; the PID parameters are adaptively adjusted according to the ambient temperature and explosion energy factors; and over-temperature protection and pressure protection mechanisms are set at the same time.

[0070] S13, Control strategy of power switching device module: Use phase control program and pulse width modulation program to adjust the conduction angle of rectifier circuit and duty cycle of switching tube to control output voltage; use sinusoidal pulse width modulation program to generate sinusoidal output voltage; set overcurrent protection, overvoltage protection and overtemperature protection mechanisms.

[0071] S14, System Integration and Optimization: The data collected by the energy recovery module, heat exchange module, and safety monitoring module are integrated to comprehensively analyze the system's operating status; the intelligent control module coordinates the work of each module based on the integrated data to achieve efficient energy recovery, conversion, and output; the control parameters are optimized using genetic algorithms and particle swarm optimization algorithms to improve the overall system performance.

[0072] The specific implementation plan is as follows:

[0073] The detailed signal data processing procedure for the energy recovery device used in mining blasting described above is as follows:

[0074] 1. Data Acquisition and Preprocessing:

[0075] Sensor data: Sensors from the energy recovery module, safety monitoring module, and heat exchange module collect key parameters such as voltage, current, temperature, pressure, and vibration in real time.

[0076] Preprocessing: The raw data is filtered, denoised, and calibrated to eliminate interference and errors and improve data quality.

[0077] Data fusion: This involves fusing data from multiple sensor sources to comprehensively analyze energy release, equipment status, and environmental impact during the blasting process.

[0078] 2. Data analysis and decision-making in the intelligent control module:

[0079] Energy analysis: Analyze the voltage and current data collected by the energy recovery module to calculate energy capture efficiency, storage capacity, and output power.

[0080] Condition monitoring: Analyze equipment operating status data, such as temperature and pressure, to assess the health status of the equipment and predict potential failures.

[0081] Safety assessment: Analyze the data collected by the safety monitoring module to assess the safety of the blasting operation and determine if any abnormalities exist.

[0082] Decision output: Based on the data analysis results, the intelligent control module issues control commands to adjust the operating parameters of the energy recovery module, power switching device module and heat exchange module, optimize energy recovery efficiency, and ensure safe operation of the equipment.

[0083] 3. Security monitoring module data analysis and alarms:

[0084] Real-time monitoring: Continuously monitor various safety parameters at the blasting operation site, such as vibration intensity, gas concentration, and personnel location.

[0085] Anomaly detection: Using preset thresholds or models, the monitoring data is analyzed to determine whether there are any out-of-limit or abnormal situations.

[0086] Alarm output: Once an abnormal situation is detected, an audible and visual alarm signal will be issued immediately to remind on-site personnel to take emergency measures.

[0087] 4. Data processing for power switching device modules:

[0088] Rectification control: Adjust the rectifier circuit parameters according to the AC characteristics of the energy recovery module output to achieve efficient rectification.

[0089] Inverter control: Adjust the inverter circuit parameters according to load requirements to convert DC power into AC power output that meets the requirements.

[0090] Protection and control: Monitor parameters such as current, voltage, and temperature of power switching devices to achieve overcurrent, overvoltage, and overheat protection functions.

[0091] 5. Data processing for the heat exchange module:

[0092] Temperature monitoring: Real-time monitoring of the inlet and outlet temperatures of the heat exchange module to assess heat exchange efficiency.

[0093] Flow control: Adjust the flow rate of the heat exchange medium based on temperature monitoring results to optimize the heat exchange process.

[0094] 6. Data storage and transmission:

[0095] Data storage: The processed data is stored in a local database or cloud server for subsequent analysis and querying.

[0096] Data transmission: Data is transmitted to a remote monitoring center via wired or wireless networks to achieve centralized management and remote monitoring.

[0097] 7. Data visualization and report generation:

[0098] Data visualization: Displaying data in the form of charts, curves, etc., to intuitively reflect the energy recovery process, equipment status, and safety conditions.

[0099] Report generation: Based on the data analysis results, energy recovery reports, equipment operation reports, and safety assessment reports are automatically generated to provide a basis for management decisions.

[0100] Through the detailed signal data processing described above, this energy recovery device can achieve efficient, safe, and intelligent energy recovery, providing a reliable energy guarantee for mining blasting.

[0101] The working principle of the intelligent control module of the energy recovery device for mining blasting is described in detail below.

[0102] The intelligent control module of this energy recovery device for mining blasting is the core of the entire device. It integrates functions such as real-time data analysis, intelligent algorithms, and precise control to ensure efficient energy recovery and reuse, thereby optimizing the blasting operation process and improving operational efficiency.

[0103] 1. Real-time data acquisition and analysis

[0104] Sensor network: The device is equipped with a variety of sensors to monitor various parameters during the blasting operation in real time, such as blasting pressure, temperature, vibration, etc.

[0105] Data transmission: The collected data is transmitted to the intelligent control module via wireless or wired means.

[0106] Data Analysis: The high-performance processor in the control module performs real-time analysis on the received data to identify the energy distribution and loss during the blasting process.

[0107] 2. Intelligent Algorithm Decision Making

[0108] Energy recovery strategy: Based on real-time data analysis results, intelligent algorithms will formulate the optimal energy recovery strategy, including recovery timing and recovery method.

[0109] Predictive Model: Using historical data and machine learning algorithms, a predictive model is built to predict the energy demand during the blasting process, providing guidance for energy recovery.

[0110] 3. Precise control

[0111] Control signal generation: Based on the decision results of the intelligent algorithm, the control module will generate corresponding control signals.

[0112] Equipment execution: Control signals are transmitted to energy recovery modules, such as recovery pumps and generators, through communication interfaces, driving them to operate according to predetermined strategies.

[0113] Feedback adjustment: During equipment operation, the control module continuously receives feedback data from the equipment and adjusts the control strategy in real time to ensure efficient energy recovery and reuse.

[0114] 4. Optimize blasting operation procedures

[0115] Operation planning: Based on energy recovery data, the intelligent control module can optimize the blasting operation process, such as adjusting the blasting sequence and reducing unnecessary waiting time.

[0116] Efficiency Improvement: By precisely controlling and optimizing the work process, the efficiency of blasting operations can be improved, reducing energy consumption and cost expenditures.

[0117] The intelligent control module of this energy recovery device for mining blasting achieves precise control of the energy recovery module through real-time data analysis and intelligent algorithms, ensuring efficient energy recovery and reuse. Simultaneously, by optimizing the blasting operation process, it improves operational efficiency, bringing significant economic and environmental benefits to the mining industry.

[0118] The following is a specific implementation example to demonstrate the application of the above-mentioned energy recovery device in mining blasting.

[0119] Example 1: Energy Recovery from Open-Pit Coal Mine Blasting

[0120] An open-pit coal mine uses traditional blasting methods for mining, which generates a large amount of energy with each blast. Most of this energy is wasted as shock waves, heat, and noise. To improve energy efficiency, the mine decided to introduce an energy recovery system.

[0121] 1. Equipment installation and commissioning:

[0122] Energy recovery modules are installed around the blast area to capture the energy of the shock wave.

[0123] A heat exchange module is installed near the blast hole to absorb the heat generated by the explosion.

[0124] A safety monitoring module is deployed at the work site to monitor various safety parameters during the blasting process in real time.

[0125] The intelligent control module, power switching device module, energy recovery module, and heat exchange module are connected to form a complete energy recovery system.

[0126] The entire system device was debugged to ensure that all modules worked together to achieve optimal performance.

[0127] 2. Blasting operations and energy recovery:

[0128] During blasting operations, the energy recovery module captures the energy of the shock wave and converts it into electrical energy for storage.

[0129] The heat exchange module absorbs the heat energy generated by the explosion and converts it into usable heat energy or electrical energy.

[0130] The safety monitoring module monitors the blasting process in real time to ensure operational safety.

[0131] The intelligent control module adjusts the operating parameters of the power switching device module based on the output of the energy recovery module and the heat exchange module, thereby achieving efficient energy storage and output.

[0132] 3. Energy utilization and effect evaluation:

[0133] The stored electrical energy can be used for lighting, ventilation, transportation and other equipment in the mine, or it can be connected to the power grid to generate surplus electricity for the grid.

[0134] The recovered heat energy can be used for heating and hot water supply in the mine.

[0135] By analyzing and comparing data, the performance and economic benefits of energy recovery devices are evaluated, providing a basis for subsequent optimization.

[0136] 4. Actual results:

[0137] By introducing energy recovery devices, the coal mine can recover approximately 1 million kilowatt-hours of electricity and 500,000 kilojoules of heat annually.

[0138] The recovered energy not only meets part of the mine's own energy needs, but also enables surplus electricity to be fed into the grid, bringing considerable economic benefits.

[0139] At the same time, the energy recovery device effectively reduces the environmental impact of blasting operations, reducing noise and dust pollution.

[0140] This case demonstrates that the energy recovery device has broad application prospects in mining blasting, and can not only improve energy utilization efficiency and reduce production costs, but also reduce environmental pollution and achieve sustainable development.

[0141] The specific implementation method of the proposed blasting energy recovery system is described in detail below:

[0142] 1. Heat exchange module installation and connection:

[0143] Selection and Design: Based on parameters such as the depth and diameter of the blast hole, the type of explosive, and the explosion energy, select a suitable heat exchange module. The heat exchange module should possess high-efficiency heat conduction performance, high-temperature and high-pressure resistance, and impact resistance.

[0144] Installation Location: The heat exchange module should be installed near the blast hole, not too far from the blast center, to maximize the absorption of the heat energy generated by the explosion. The module should maintain a safe distance from the blast hole to avoid direct damage from the blast shock wave.

[0145] Connection method: Connect the heat exchange module to the rupture hole via a high-temperature and high-pressure resistant pipe or hose. The pipe should have good sealing performance to prevent heat leakage.

[0146] Heat exchange medium: Select a suitable heat exchange medium, such as water, oil or other high-temperature fluid, to circulate inside the heat exchange module, absorb the heat energy generated by the explosion, and transport it to the energy conversion device.

[0147] 2. Security monitoring module layout and connection:

[0148] Sensor Selection and Placement: Select appropriate sensors based on monitoring requirements, such as vibration sensors, gas sensors, temperature sensors, and pressure sensors. Place the sensors in key locations at the blasting site, such as around blast holes, near safety warning lines, and in areas where personnel gather.

[0149] Data Acquisition and Transmission: Data collected by sensors is transmitted to the security monitoring module via wired or wireless means. The module should have real-time data acquisition, storage, and analysis capabilities, and be able to promptly detect anomalies and issue alarms.

[0150] Alarm methods: The security monitoring module can transmit alarm information to relevant personnel through audible and visual alarms, SMS notifications, remote monitoring, etc., so that emergency measures can be taken in a timely manner.

[0151] 3. Connection and integration of intelligent control module and power switching device module:

[0152] Communication interface: The intelligent control module should have an interface for communication with the energy recovery module, heat exchange module, safety monitoring module and power switching device module, such as RS-485, CAN bus, Ethernet, etc.

[0153] Control Algorithm: The intelligent control module has a built-in control algorithm program that adjusts the operating parameters of the energy recovery module, heat exchange module, and power switching device module in real time based on the data collected by each module, so as to achieve efficient energy recovery, conversion and output.

[0154] Protection functions: The intelligent control module should have overcurrent, overvoltage, and overtemperature protection functions to ensure the safe and stable operation of the system.

[0155] 4. System integration and debugging:

[0156] The energy recovery module, heat exchange module, safety monitoring module, intelligent control module, and power switching device module are connected according to the design scheme to form a complete energy recovery device.

[0157] A comprehensive debugging of each module of the device was carried out, including sensor calibration, communication testing, and control algorithm verification, to ensure that all parts of the system work together and achieve the expected performance.

[0158] The above methods can be used to implement a blasting energy recovery system. In practical applications, adjustments and optimizations are needed based on specific circumstances to achieve the best results.

[0159] The specific implementation method of the control strategy for the intelligent control module can be as follows:

[0160] 1. Energy recovery module control strategy:

[0161] Energy capture and storage control:

[0162] Real-time monitoring: Monitor parameters such as the magnitude and duration of the shock wave energy.

[0163] Dynamic adjustment: Based on monitoring data, the capture efficiency and storage capacity of the energy recovery module are dynamically adjusted to maximize energy capture.

[0164] Optimization strategy: Employ algorithms such as Maximum Power Point Tracking (MPPT) to optimize the energy capture process and improve energy conversion efficiency.

[0165] Energy output control:

[0166] Load matching: Adjust the energy output power according to the load demand to achieve load matching.

[0167] Energy Management: Employ energy management strategies to rationally allocate stored energy and ensure the stability and reliability of the system's power supply.

[0168] 2. Control strategy for the heat exchange module:

[0169] Temperature control:

[0170] Real-time monitoring: Monitor parameters such as inlet and outlet temperatures and medium flow rate of the heat exchange module.

[0171] PID control: The PID control algorithm is used to adjust the medium flow rate and control the outlet temperature within the set range to ensure heat exchange efficiency.

[0172] Adaptive control: Based on factors such as ambient temperature and explosion energy, the PID parameters are adaptively adjusted to improve control accuracy.

[0173] Security protection:

[0174] Over-temperature protection: When the temperature exceeds the set threshold, the medium flow rate is automatically reduced or heat exchange is stopped to prevent equipment damage.

[0175] Pressure protection: When the pressure exceeds the set threshold, the pressure is automatically released to ensure system safety.

[0176] 3. Control strategy for power switching device module:

[0177] Rectification control:

[0178] Phase control: A phase control program is used to adjust the conduction angle of the rectifier circuit to control the output voltage.

[0179] PWM control: The pulse width modulation (PWM) program is used to adjust the duty cycle of the switching transistor to achieve precise control of the output voltage.

[0180] Inverter control:

[0181] SPWM control: The Sinusoidal pulse width modulation (SPWM) program is used to generate a sinusoidal output voltage, thereby improving the quality of the output waveform.

[0182] Harmonic suppression: Using methods such as filters or harmonic injection, harmonic components in the output voltage are suppressed to reduce interference to the power grid.

[0183] Protection and control:

[0184] Overcurrent protection: When the current exceeds the set threshold, the switching transistor is immediately shut off to prevent equipment damage.

[0185] Overvoltage protection: When the voltage exceeds the set threshold, the switching transistor is immediately shut off to prevent equipment damage.

[0186] Over-temperature protection: When the temperature exceeds the set threshold, the switch is immediately shut off to prevent equipment damage.

[0187] 4. System Integration and Optimization:

[0188] Data fusion: The data collected by the energy recovery module, heat exchange module and safety monitoring module are merged to comprehensively analyze the system's operating status.

[0189] Collaborative control: Based on the fused data, the intelligent control module coordinates and controls the operation of each module to achieve efficient energy recovery, conversion and output.

[0190] Optimization algorithms: Optimization algorithms such as genetic algorithms and particle swarm optimization are used to optimize control parameters and improve the overall performance of the system.

[0191] 5. Algorithm Implementation:

[0192] Programming languages: Control algorithms can be implemented using programming languages ​​such as C / C++ and Python.

[0193] Hardware platform: Control algorithms can be implemented using hardware platforms such as microcontrollers, DSPs, and FPGAs.

[0194] Software tools: Algorithm simulation and verification can be performed using software tools such as MATLAB / Simulink.

[0195] The above methods can be used to implement the control strategy of the intelligent control module, thereby achieving efficient energy recovery, conversion and output.

[0196] Energy recovery based on the above-mentioned energy recovery device for mining blasting achieves the following technical benefits:

[0197] 1) Improved energy conversion efficiency: Focusing on improving the conversion efficiency from the explosive reaction to the final energy output (such as electrical or mechanical energy) by using more efficient thermal and pressure capture mechanisms.

[0198] 2) Enhanced safety and stability: Focus on improving system safety, such as further developing more reliable ignition and explosion control mechanisms, and enhancing the effectiveness of explosion outlet pressure relief mechanisms to ensure stable operation even under extreme conditions.

[0199] 3) Environmental adaptability and sustainability: Fully consider the adaptability of the equipment to different mining environments and the sustainability of long-term operation, explore the use of environmentally friendly materials, reduce the emission of harmful substances generated by explosions, and design a modular system that is easy to maintain and upgrade.

[0200] In summary, this invention provides an energy recovery device and method for mining blasting. The device includes: an energy recovery module for capturing and storing energy generated during blasting; an intelligent control module for monitoring and managing the entire energy recovery process; a safety monitoring module for real-time monitoring of the safety status of the blasting operation, collecting and analyzing data from the blasting site using sensors and monitoring equipment; a power switching device module for rectification and inversion in the energy feedback system; and a heat exchange module for capturing the heat energy generated during the explosive detonation and converting it into reusable energy. This invention constructs a comprehensive system integrating energy capture, storage, control, and monitoring, which can effectively improve the energy recovery and utilization efficiency in mining blasting, reduce energy consumption, and minimize environmental impact.

[0201] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An energy recovery device for mining blasting, characterized in that: It includes an energy recovery module, an intelligent control module, a safety monitoring module, a heat exchange module, and a power switching device module; The energy recovery module is installed around the blasting area to capture and store the shock wave energy generated during the blasting process; The safety monitoring module is deployed at the blasting operation site to monitor various safety parameters of the blasting operation in real time. The heat exchange module is installed near the blast hole to capture the heat energy generated during the blasting process and convert it into reusable heat energy or electrical energy. The power switching device module is electrically connected to the energy recovery module, the heat exchange module, and the intelligent control module, respectively, and is used to control the storage, conversion, and output of energy. The intelligent control module is electrically connected to the energy recovery module, the heat exchange module, and the safety monitoring module, respectively. Based on the output data of the energy recovery module and the heat exchange module, it adjusts the operating parameters of the power switching device module to realize energy storage, conversion, and output. The intelligent control module fuses the sensor data collected by the energy recovery module, heat exchange module, and safety monitoring module, and performs coordinated control and integrated optimization of the energy recovery module, heat exchange module, and power switching device module based on the fused multi-source sensor data. The specific control strategy is as follows: The energy capture parameters of the energy recovery module are optimized by controlling the maximum power point tracking algorithm program. The heat exchange medium flow parameters of the heat exchange module are controlled by a combination of PID control algorithm and adaptive adjustment mechanism. The output voltage and current of the power switching device module are controlled by a phase control program and a pulse width modulation program.

2. The energy recovery device for mining blasting according to claim 1, characterized in that: The energy recovery device for mining blasting also includes an energy utilization module, which is connected to the energy recovery module and the heat exchange module respectively, for reusing the recovered electrical and thermal energy.

3. The energy recovery device for mining blasting according to claim 1, characterized in that: The energy recovery device for mining blasting also includes a data processing and analysis module, which is electrically connected to the energy recovery module, heat exchange module, and safety monitoring module, respectively. The data processing and analysis module is used to collect, process, and analyze the working data from the energy recovery module, heat exchange module, and safety monitoring module to evaluate the performance and economic benefits of the energy recovery device for mining blasting.

4. The energy recovery device for mining blasting according to claim 1, characterized in that: The energy recovery module includes an energy capture device and an energy storage device; the energy storage device includes, but is not limited to, a supercapacitor or a flywheel energy storage system.

5. An energy recovery device for mining blasting according to claim 1, characterized in that: The heat exchange module includes a heat energy conversion device, a pipeline, and a heat exchange medium; the heat exchange module is connected to a rupture hole via a high-temperature and high-pressure resistant pipeline; the pipeline contains a heat exchange medium; the heat exchange medium is water, oil, or other high-temperature fluid. The heat exchange medium circulates inside the pipeline to absorb the heat energy generated by the explosion and transport it to the heat energy conversion device.

6. An energy recovery device for mining blasting according to claim 1, characterized in that: The power switching device module adopts the IPM intelligent power module.

7. An energy recovery device for mining blasting according to claim 1, characterized in that: The safety monitoring module includes several sets of sensors and monitoring equipment, used to collect and analyze environmental data at the blasting operation site; The sensors include vibration sensors, gas sensors, temperature sensors, and pressure sensors; the sensors are installed at one or more locations around the blasting hole, near the blasting operation safety warning line, or in the area where blasting personnel gather.

8. An energy recovery method for mining blasting, characterized in that: Energy recovery using the energy recovery device for mining blasting as described in any one of claims 1 to 7 includes the following steps: S1 utilizes an energy recovery module to capture and store the shock wave energy generated during the blasting process; and uses an intelligent control module to monitor and manage the entire energy recovery process. S2 utilizes a safety monitoring module to monitor the safety status of blasting operations in real time, and uses sensors and monitoring equipment to collect data from the blasting site; it also utilizes a power switching device module to perform rectification and inversion in the energy feedback system. S3 utilizes a heat exchange module to capture the heat energy generated during the explosion of explosives and convert it into reusable energy, thereby realizing the recovery of blasting energy.

9. The energy recovery method for mining blasting according to claim 8, characterized in that: The control strategy of the intelligent control module in step S1 is as follows: S11, Control strategy of the energy recovery module: The intelligent control module monitors the magnitude and duration parameters of the shock wave energy during the blasting process in real time, and dynamically adjusts the capture efficiency and storage capacity of the energy recovery module; the maximum power point tracking algorithm is used to optimize the energy capture process; the energy output power is adjusted according to the load demand to achieve load matching, and the stored energy is reasonably allocated using an energy management strategy; S12, Control strategy of the heat exchange module: The flow rate of the heat exchange medium in the heat exchange module is adjusted by a PID control algorithm program to control the outlet temperature within the set range; the PID parameters are adaptively adjusted according to the ambient temperature and explosion energy factors; and over-temperature protection and pressure protection mechanisms are set at the same time. S13, Control strategy for power switching device module: Use phase control program and pulse width modulation program to adjust the conduction angle of rectifier circuit and duty cycle of switching transistor to control output voltage; Use sinusoidal pulse width modulation program to generate sinusoidal output voltage; Set overcurrent protection, overvoltage protection and overtemperature protection mechanisms; S14, System Integration and Optimization Strategy: The sensor data collected by the energy recovery module, heat exchange module, and safety monitoring module are fused together to comprehensively analyze the device's operating status; the intelligent control module coordinates and controls the operating parameters of the energy recovery module, heat exchange module, and power switching device module based on the fused data to realize energy recovery, conversion, and output; the operating parameters are optimized using genetic algorithm and particle swarm optimization algorithm programs.

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