161 results about "Cavitation" patented technology

A system and method for determining fluid quality or change in quality by training machine learning algorithms using ultrasound Fast Fourier Transform (FFT) signatures. The system includes one or more ultrasonic transducers embedded inside or outside of a pipe, piping, or vessel that allows a fluid to flow past or between the ultrasound transducers. The transducer's acoustic energy creates ultrasound pressure waves and localized heat due to acoustic cavitation. The cavitation creates bubbles that collapse creating ultrasound sonic energy in the time domain. Unique sonic time-domain signatures, distinctively associated with the characteristics of the fluids, are converted to FFTs to produce unique, well-defined frequency response signatures. Machine learning algorithms are used to identify, measure, and classify the unique frequency response signatures associated with a wide range of fluids.

The utility model discloses a material testing device under erosion and cavitation coupling action, which comprises a container, an ultrasonic transducer, an injector head and a circulating device, a placing table is arranged in the container, the ultrasonic transducer is used for being arranged above the placing table, the injector head is arranged at the lower end of the ultrasonic transducer, and the circulating device is arranged on the placing table. The circulating device comprises a booster pump, a liquid inlet of the booster pump is communicated with the container, and a liquid outlet of the booster pump is connected with the injector head through a pipeline; in the using state, the ultrasonic transducer is electrically connected with an ultrasonic power source through a wire. According to the utility model, the erosion medium is pumped into the injector head through the booster pump, and meanwhile, the ultrasonic transducer enables the erosion medium to generate a large number of bubbles in the injector head, so that the erosion medium with the bubbles impacts a test material at a high speed, and the test condition of the hydraulic mechanical material is met.

The invention relates to the technical field of spectral analysis, and particularly discloses an underwater intelligent detection machine system and method based on laser-induced breakdown spectroscopy, and the system comprises an underwater carrying platform, an orthogonal double-pulse laser-induced breakdown spectroscopy probe, a multi-sensor cooperative sensing module, a mechanical arm, a central control unit and a water surface control station. The method comprises the following steps: a first pulse vertically builds bubbles, and a second pulse parallelly enters the bubbles and is triggered according to delay time; the central control unit maintains a working distance of 1-2cm based on a distance measurement closed loop, and adaptively adjusts delay time and energy in combination with water depth pressure and cavitation feedback; and the water surface control station carries out denoising normalization on the spectrum calibration and carries out element qualitative and quantitative operation to generate an element distribution atlas. According to the method, plasma is excited in a cavitation bubble gas environment through orthogonal double pulses, and in-situ real-time high-sensitivity element detection of an underwater target is realized in combination with distance closed loop and parameter self-adaption.

The invention relates to the technical field of cavitation monitoring, in particular to a tidal current energy water turbine cavitation predicting and monitoring method which comprises the steps that S1, multi-sensor data of a tidal current energy water turbine are collected, and the multi-sensor data comprise vibration signals, ultrasonic signals and pressure signals; s2, performing frequency domain analysis on the vibration signal, and extracting an energy value of a high frequency band as a vibration characteristic value; s3, performing transmission attenuation analysis on the ultrasonic signal, and calculating an ultrasonic attenuation rate as an ultrasonic characteristic value; s4, performing frequency domain analysis on the pressure signal, and extracting a pressure pulsation amplitude at a blade passing frequency as a pressure characteristic value; s5, based on the vibration characteristic value, the ultrasonic characteristic value and the pressure characteristic value, the current cavitation state is determined through a cavitation state judgment rule; and S6, predicting the evolution trend of the cavitation state, and estimating the residual safe operation time of the water turbine under the current working condition. The cavitation recognition result is converted into a quantitative life index, and the method has engineering application value and safety guarantee capability.

The invention relates to the technical field of hot air, in particular to a high-frequency hot air enhancing method based on airflow cavitation, which comprises the following steps: acquiring a first gas volume flow rate at an air inlet of a hot air device and a second gas volume flow rate at an air outlet, whether the fluctuation of the hot air temperature at the air outlet is qualified or not is determined according to the stability characterization value based on the volume flow difference; a low-pressure area and a high-pressure area in the hot air device are determined according to the temperature distribution stereogram in the hot air device, and whether pressure gradient distribution is qualified or not is determined based on the low-pressure overlap ratio and the high-pressure overlap ratio; the rotating speed of the power mechanism is adjusted through a rotating speed adjusting coefficient based on the transition area distance, or the valve opening degree of the air inlet is adjusted based on the distribution uniformity characterization value of the eddy current density; and determining whether the cleaning period of the hot air device is qualified or not based on the reduction rate of the volume flow difference so as to adjust the cleaning period or adjust the self-cleaning power of the hot air device. The hot air temperature stability of the hot air device is improved.

The invention discloses a quantitative evaluation method for the cavitation effect of an emulsifying machine, and the method comprises the steps: obtaining the multi-source heterogeneous time series data of pressure, acoustics, current, temperature and the like in real time through various types of sensors, carrying out the synchronous calibration, signal standardization and efficient denoising, extracting the multi-dimensional and multi-scale statistics and frequency domain features, and carrying out the quantitative evaluation of the cavitation effect of the emulsifying machine. A working condition sensitive heterogeneous feature pool is formed through normalization and dynamic screening, feature weight distribution is achieved in combination with an emulsifying machine working condition label, the cavitation intensity and the influence index are dynamically calculated based on a self-adaptive multi-task cooperation model, and the cavitation monitoring accuracy, adaptability and long-term reliability of the emulsifying machine in a complex environment are effectively improved.

The utility model relates to the technical field of rapeseed treatment, and discloses an ultrasonic vibration cleaning structure and a rapeseed pretreatment all-in-one machine, the ultrasonic vibration cleaning structure comprises a cleaning frame, the whole cleaning frame is rectangular, and an ultrasonic generator and a transducer are installed in the cleaning frame; the movable assemblies are symmetrically arranged on the two sides of the cleaning frame, the movable assemblies are used for adjusting the position of the cleaning frame, each movable assembly comprises a first mounting frame, a first connecting block, a second mounting frame and a second connecting block, the first connecting blocks and the second connecting blocks are arranged on the two sides of the cleaning frame, and through cooperation of internal parts of the movable assemblies, the cleaning frame is driven to continuously ascend and descend; the cavitation effect of ultrasonic waves more uniformly covers a cleaning area, local cleaning blind areas caused by fixed positions are avoided, and the energy distribution of the ultrasonic waves in liquid may be uneven due to factors such as the shape of a container and the depth of the liquid. Different areas can be alternately exposed in the high-strength cavitation area by moving the device or the workpiece, and the overall cleaning effect is improved.

A method of removing microvessels includes applying a burst of acoustic energy at a target location, applying a pulse of optical energy at the target location, and promoting cavitation at the target location by synchronizing an arrival of the burst of acoustic energy and the optical energy at the target location. The burst of acoustic energy has a pressure below 5.0 MPa. The pulse of optical energy at the target location has a fluence less than 100 mJ / cm2. At least a portion of the pulse is concurrent with the burst and the optical energy has an optical area that is overlapping with an acoustic area of the acoustic energy at the target location.

A low energy liquid degasification device has a liquid reservoir connected to an input channel above it and a cylinder below it. The input channel has several embedded isolation valves which allow the channel to be closed off into several independent chambers. The cylinder has a piston capable of moving up and down under the action of an actuator located below it and which seals the cylinder. Upon filling the liquid reservoir, input channel, and cylinder above the piston with a largely incompressible and inexpansible liquid and sealing the isolation valves, the piston is moved downward increasing the enclosed volume and generating a vacuum. Agitation of the assembly produces cavitation and pressure waves inside, generating bubbling that removes dissolved gas from the liquid.

The invention provides a water heater water pump rotating speed control method, device and system, and relates to the technical field of water heater control. The method is applied to a control mainboard. The method comprises the steps that after a water pump is started, current water pump outlet pressure and current water pump rotating speed are obtained in real time; if the current water pump outlet pressure is lower than the current water pressure lower limit for generating cavitation noise corresponding to the current water pump rotating speed, reducing the current water pump rotating speed until the latest current water pump outlet pressure is not lower than the current water pressure lower limit for generating cavitation noise corresponding to the latest current water pump rotating speed; wherein the corresponding relation between the water pressure lower limit and the water pump rotating speed is positive correlation; the water pump outlet pressure changing speed along with the water pump rotating speed is smaller than the water pressure lower limit changing speed along with the water pump rotating speed. When the water pressure suddenly drops in the water consumption peak period of a user, noise and cavitation phenomena can be effectively reduced.

The application provides a distributed ultrasonic transducer array and a control method thereof. The distributed ultrasonic transducer array comprises a plurality of unit ultrasonic transducers, the outer contour of the amplitude rod of each transducer is provided with a plurality of continuous cylindrical sections in the axial direction, each section is composed of a first cylindrical surface and a second cylindrical surface, the generatrix is a circular arc or a broken line symmetrical about the center line, and each cylindrical section forms an acoustic focal point with different radial distances in the medium. The plurality of transducers are arranged along the pipeline, and the focal domain distribution of adjacent transducers is arranged in the same or complementary mode, so that the radial focal domain of each transducer is spatially staggered and the energy is superposed, forming a synthesized sound field with small sound pressure fluctuation and uniform distribution. The application can realize large-range and high-uniformity cavitation treatment with fewer ultrasonic transducers, and can realize spatial differentiation regulation and control of focal energy according to the concentration distribution of pollutants, thereby significantly improving the treatment efficiency and engineering economy.

The application belongs to the technical field of numerical simulation. The application provides a research method for near-wall cavitation of underwater explosion based on secondary development of LS-DYNA. The disclosed embodiment can reproduce the dynamic processes of explosion-induced local negative pressure area, cavitation nucleus formation and collapse in LS-DYNA, and can make up for the problems that the traditional model cannot accurately process cavitation truncation and negative pressure non-convergence; LS-DYNA is used for driving modeling, parameter input, cavitation model embedding, solution submission and result extraction, so that the simulation whole process automation is realized, the manual operation amount is greatly reduced, and the calculation efficiency and reliability are improved; the automatic batch processing of multiple working conditions is supported, the influence of factors such as explosion source distance, water depth, static water pressure, explosive equivalent and wall surface material on cavitation behavior can be systematically studied, and good expansibility is obtained; and the key data such as cavitation area pressure and wall surface structure response can be automatically extracted, so that scientific basis is provided for analyzing the wall surface strengthening impact caused by cavitation collapse.

The utility model discloses a paddle antifouling device based on an ultrasonic module, which comprises a double-paddle propeller and an ultrasonic cleaning device arranged in a ship body, two symmetrical direction adjusting blades swinging independently are arranged at the tail end of the double-paddle propeller, and a swinging antifouling blade is further arranged at the tail end of the ship body. The top of the antifouling blade is linked to an ultrasonic cleaning device in the ship body through a rotating shaft, a cavitation groove and an impact groove which are symmetrical are formed in the two side faces of the antifouling blade, an electrically-controlled rotating paddle is arranged in the cavitation groove, and an ultrasonic generator is arranged in the impact groove. After the ultrasonic cleaning device is improved, the damage to the propeller is reduced; ultrasonic waves are transmitted into water by taking the rotating paddle on the antifouling blade as a medium to cause vibration, so that a cavitation phenomenon is generated, bubbles after being buffered are broken and attached to the surface of the propeller, and the damage is smaller; the antifouling blades can also play a certain role in propelling and redirecting the ship body; and the propeller is additionally cleaned under the assistance of direct-flushing sound waves or high-pressure water flow.

The invention discloses a battery thermal runaway internal termination method and system based on an acoustic cavitation effect, and the method comprises the steps: obtaining a thermal runaway early warning signal of a new energy battery containing a liquid electrolyte, and enabling a battery management system to recognize the early warning signal through a multi-parameter sensor of the battery; high-intensity ultrasonic waves are applied to the battery, so that the high-intensity ultrasonic waves penetrate through the battery shell and spread in the internal liquid electrolyte; the method comprises the following steps: exciting an acoustic cavitation effect in a liquid electrolyte by using high-strength ultrasonic waves, generating micron-sized microbubbles by the acoustic cavitation effect, violently collapsing the microbubbles under a positive pressure phase of the acoustic waves, and generating high temperature not lower than 5000K and high pressure not lower than 1000atm; liquid electrolyte molecules are subjected to pyrolysis, supercritical oxidation or mechanical cracking through high temperature and high pressure, so that the chemical structure is irreversibly damaged, and the ionic conductivity is lost; and judging that the liquid electrolyte is invalid and terminating the thermal runaway of the battery. According to the invention, the reaction medium is destroyed from the interior of the battery, fundamental termination is realized, the response is extremely rapid, and secondary pollution is avoided.

The present application belongs to the technical field of bearing lubrication state monitoring, and particularly relates to a bearing lubrication state real-time monitoring method based on fluid dynamics model correction, which comprises the following steps: obtaining original vibration acceleration signals and running state data, performing variational modal decomposition on the original vibration acceleration signals to extract cavitation characteristic components; calculating a cavitation kinetic energy impact index according to the extracted cavitation characteristic components and the running state data; dynamically correcting the equivalent fluid density of lubricating oil according to the cavitation kinetic energy impact index and the contact area pressure of the bearing estimated from the running state data; solving the minimum oil film thickness of the lubricating oil film by using the corrected equivalent fluid density, and determining a lubrication safety margin index in combination with the temperature rise rate of the bearing. The present application overcomes the defect that the monitoring result is distorted due to the single-phase fluid assumption, and improves the accuracy of bearing lubrication state monitoring and early risk warning.

In semiconductor manufacture requiring ultra high purity water, particles of specified sizes are detected using acoustic particle detection capable of detecting nanoparticles. A sensor unit receives a flow of water, with the pressure and rate of flow to the sensor controlled closely. In each sensor unit is a measurement cell to receive a continuous flow of water, with a transducer module engaged with the cell to deliver an acoustic pulse at a known level of intensity as the liquid flows through the cells, the acoustic pulse acting on the liquid at a focus zone to cause cavitation in the event a particle of size detectable at that intensity is present. A waveform emitter / receiver connected to the sensor unit sends high-frequency, high-voltage signal to the transducer module to cause the acoustic pulse, and it also receives a waveform echo indicating a cavitation event. The system is controlled by a microprocessor.

The invention provides a high-energy acoustoelectric physical field fracturing and permeability increasing experiment system and method. The experiment system comprises an anti-explosion and anti-explosion cavity, and a test loading system, an acoustoelectric fracturing system, a gas injection system, an extraction system and a parameter monitoring system which are mounted in the anti-explosion and anti-explosion cavity. Strong electric stress and shock waves generated by high-voltage discharge and vibration and cavitation effects caused by a high-strength sound field jointly act on a coal sample. Under the action of an electro-acoustic coupling field, microscopic cracks are generated in the coal sample and are expanded into a net, so that the permeability is improved; and meanwhile, physical field energy promotes desorption of gas molecules and accelerates the diffusion process, and finally efficient extraction of unconventional natural gas is achieved. According to the invention, breakthroughs are made in the aspects of fracturing energy, fracturing action range, in-situ observation capability and the like, a simulation experiment of fracturing and permeation enhancement of the deep ultra-low permeability reservoir under the action of a high-energy acoustoelectric physical field is realized, and an experiment platform is provided for research on a permeation enhancement transformation mechanism of the deep ultra-low permeability reservoir.

A method includes insonifying, using at least one transducer, a vessel using first ultrasound energy of a first frequency, receiving, using the at least one transducer, a first analogue signal obtained using the first ultrasound energy, determining, using processing circuitry, a first material property of the vessel based on a first frequency response signature of the first analogue signal, insonifying, using the at least one transducer, a fluid in the vessel using second ultrasound energy of a second frequency lower than the first frequency, the second ultrasound energy creating cavitation of bubbles in the fluid to be measured, receiving a second analogue signal obtained using the second ultrasound energy and energy created by the cavitation of the bubbles in the fluid, and identifying a second material property of the fluid based on the first material property and a second frequency response signature of the second analogue signal.

The present application relates to the technical field of oil processing, and discloses a physical refining process for non-chemical refined oil, which comprises the following steps: preheating the oil and forming an extremely thin liquid film on the surface of a centrifugal disc; injecting superheated steam into the bottom layer of a deacidification zone through a microporous air distribution plate; generating a non-continuous micro-bubble array by high-frequency pulse modulation, and making the micro-bubbles migrate and expand upward under vacuum negative pressure; generating a cavitation collapse effect by the micro-bubbles penetrating the gas-liquid interface, generating a shock wave to break the mass transfer boundary layer, and stripping the free fatty acid components in the liquid film to the gas phase. The present application replaces macroscopic fluid sweeping with microcosmic transient stripping, realizes efficient deacidification when the heat exposure temperature of the oil is lower than 230 DEG C, effectively inhibits the generation of trans-fatty acids and glycidyl esters, maintains the mechanical balance of the liquid film surface while ensuring the driving force of deacidification, reduces the loss of neutral oil, and improves the refining yield.

The embodiment of the invention provides a propeller underwater radiation noise forecasting method based on acoustic basic laws and experimental data fusion driving. The method not only depends on a theoretical model, but also combines actual measurement data under actual working conditions, can dynamically adjust a noise prediction model, and improves the accuracy of noise prediction. The defect of insufficient precision caused by dependence on an empirical formula in the current industry is overcome. By introducing the critical cavitation number sigma cr = max (epsilon max, 2), the robustness of the noise prediction model is enhanced, the reasonable prediction of the cavitation phenomenon can be ensured even under extreme conditions, and the risk of insufficient cavitation noise estimation is avoided. According to cavitation noise at different navigational speeds, relation curves of different parameters are obtained through staged regression, and it is ensured that the model can provide high-precision noise prediction whether in low-speed navigational speed or high-speed navigational speed. Compared with some existing fixed formulas, the method has better adaptability and practicability.

The invention belongs to the technical field of fluid control equipment, and provides a gate valve cavitation suppression system and method based on active jet flow, the system comprises a valve core main body, the valve core main body is internally provided with a cavity, and is provided with a jet flow inlet and a jet flow outlet which enable the cavity to be communicated with an external flow field, and the jet flow outlet points to a cavitation area; the vibration response type jet flow control mechanism is arranged in the cavity and used for sensing cavitation vibration and controlling opening and closing of the jet flow outlet. According to the method, when cavitation vibration reaches the preset strength, the amplitude of driving the baffle to vibrate up and down is large, the baffle vibrates to be attracted by the magnet, and the jet flow channel is kept open; when the opening degree of the valve is adjusted, the cam rotates and pushes the magnet to be separated from the baffle, and the jet flow channel is forcibly closed. And after the valve opening is adjusted, the system is reset and enters the vibration detection state again. The valve has the advantages that the cavitation phenomenon can be effectively restrained, the service life of the valve is prolonged, and vibration and noise are reduced.

The invention relates to the field of preparation of energy storage materials, and discloses an ultrasonic-assisted preparation method of a paraffin / nano-metal composite phase change energy storage material. Comprising the following steps: heating paraffin to a temperature 10-20 DEG C higher than the phase transition temperature of the paraffin to melt the paraffin, and adding nano metal particles subjected to surface modification into the molten paraffin to form a uniform suspension system; a multi-field coupling field composed of an ultrasonic frequency band sound field and an alternating electric field is applied in a molten state, and particles construct a heat conduction channel network at a phase boundary through low-frequency pulse dispersion, medium-frequency sweep frequency chained orientation and high-frequency stable frequency standing wave aggregation in sequence; paraffin molecules are induced by high temperature and high pressure generated by cavitation collapse to react with the metal surface to generate a composite interface layer; graded cooling is carried out in a high-frequency standing wave sound field, so that the particles form concentration decreasing distribution in the vertical direction, and a chain structure is stabilized through a weak alternating electric field; and after curing, carrying out constant-temperature annealing to stabilize the interface layer and eliminate residual stress.

The application discloses a kind of water turbine cavitation degree detection methods based on cavitation perception multi-path deep learning network model, comprising: obtaining acoustic signal sequence collected from water turbine equipment and normalizing, construct including one cavitation feature extraction path, one periodicity feature extraction path, one multi-scale mel spectrum extraction path of extracting time-frequency representation feature, feature fusion module, main classifier and auxiliary classifier in the cavitation perception multi-path deep learning network model, feature fusion module is adaptively fused to the cavitation feature and periodicity feature extracted, and learns fusion weight;Again, the physical feature vector after fusion is input into auxiliary classifier and classified, and multi-scale mel spectrum feature is input into main classifier and classified;And based on including main classification loss, auxiliary classification loss and cavitation perception alignment loss in the target cost function, the model is trained.The application can provide interpretable physical feature representation while maintaining high classification accuracy.

This application provides a high-cavitation-resistant pressure-reducing sludge pump, belonging to the field of centrifugal pump technology. Because the pump transports a high-temperature medium with a low inlet pressure, the medium at the pump inlet is in a critical saturation state. At this point, the medium is highly susceptible to vaporization, forming a large number of bubbles. The bursting of these bubbles generates impact, causing cavitation damage to the inlet blades of the first-stage impeller, resulting in pump vibration, noise, and a sudden drop in head, ultimately leading to pump damage. Increasing the pump inlet pressure and decreasing the medium temperature are not feasible. The only solution is to optimize the pump body. Since the inlet of the first-stage impeller is highly susceptible to cavitation, the first-stage impeller is designed with double suction to increase the pump's net positive suction head (NPSH), thereby reducing the possibility of cavitation in the first-stage impeller and ensuring more stable pump operation. Due to the high pump outlet pressure, the coordinated operation of the first and second-stage impellers can mitigate excessive pressure on individual impeller components, thus extending the pump's service life.

A non-submerged cavitation-erosion synergistic damage simulation device, system and method belong to the field of hydraulic machinery working condition simulation, including a sediment jet channel and a cleaning fluid channel in its periphery; high-speed sand-containing fluid is introduced into the sediment jet channel to form a central high-speed jet impacting the sample surface, high-speed cleaning fluid is introduced into the cleaning fluid channel to form a peripheral low-speed water curtain surrounding the central high-speed jet after being ejected from the annular steady flow pipe, and the peripheral low-speed water curtain impacts the sample surface to form a local liquid phase confining pressure zone together with the central high-speed jet. The present application not only realizes the true simulation of the actual working condition under non-submerged conditions, but also can adjust the flow and pressure of the cleaning fluid to adjust the cavitation number and cavitation collapse intensity around the high-speed sand-containing jet without changing the atmospheric environmental pressure, and quickly adjust the simulation test parameters.

This invention discloses a method and system for determining vibration-induced cavitation in micro-gap insulating oil, relating to the field of power equipment condition monitoring technology. First, a micro-gap fluid pressure analysis model under vibration is established. By considering a nonlinear model with multi-field coupling, the fluid pressure in the micro-gap is obtained. Then, to analyze the cavitation pressure threshold of bubble nuclei, a multi-parameter coupled analytical model incorporating dynamic gas-liquid balance correction is established to obtain the cavitation pressure threshold. Finally, a dynamic cavitation determination and critical state early warning model for insulating oil is established to obtain the cavitation risk factor and cavitation determination results. The method proposed in this invention considers the influence of multiple dynamic factors, has good dynamic adaptability, and the introduction of a multi-field coupled nonlinear model improves the accuracy of cavitation determination, providing a new approach for micro-gap cavitation research.

The invention discloses a cavitation heating method and system based on artificial intelligence. The method comprises the steps that sound data from an acoustic sensor and vibration data from a vibration sensor are obtained; acquiring other data from other sensors; performing time-frequency domain analysis on the sound data and the vibration data; associating the processed sound data, vibration data and other sensor data according to a time axis; training a machine learning model by using multiple groups of training data; and obtaining input data according to sensor data collected in real time and the net positive suction head NPSH value obtained through calculation, inputting the input data into the machine learning model, and outputting the current or future cavitation state of the cavitation heating device in the machine learning model. The problem that monitoring of a single parameter is not beneficial to inaccurate judgment of the cavitation heating operation state is solved, and therefore the accuracy of the operation state of the cavitation heating device is improved to a certain degree.

The invention relates to the technical field of metal surface treatment, and discloses a pressurized environment film forming method for improving the uniformity of a blackening film layer of a steel workpiece, which comprises the following steps: S1, a preparation step: placing a pretreated workpiece in a high-pressure ultrasonic reaction kettle, and injecting a blackening solution to completely immerse the workpiece; s2, establishing a basic environment: heating the blackening solution in the kettle, and establishing a basic static pressure to create a high-temperature and high-pressure condition for a film-forming reaction; s3, a dynamic pressure applying step: applying a periodically changing pulse pressure on the established basic static pressure in a superposed manner to form a dynamic pressure pulse; and S4, applying ultrasonic energy: in the process of applying the dynamic pressure, synchronously radiating ultrasonic energy sufficient to excite the cavitation effect into the blackening solution. According to the method, dynamic pressure pulse and ultrasonic energy are cooperatively regulated and controlled, mass transfer limitation and cavitation locking are effectively overcome, and the uniformity and integrity of a blackening film layer of a complex workpiece are remarkably improved.

This invention discloses a combined process for restoring reservoir drainage and gas production channels using high-pressure drive and chemical dissolution, relating to the field of efficient oilfield exploitation technology. The process includes: S1, conducting production profile testing and sampling analysis of blockages in the target gas well to determine the type, distribution location, and reservoir physical parameters of the blockages, and preparing a corresponding chemical dissolving agent based on the analysis results. This invention couples the mechanical fracture-creating effect of high-pressure pulsed fluid with the cavitation effect and vibrational mass transfer effect of ultrasound. Based on the initial dissolution of blockages by the chemical dissolving agent, the stress waves generated by the high-pressure pulse expand the reservoir microfractures. Simultaneously, the collapse of microbubbles generated by ultrasound enhances the dissolution reaction rate, and the vibration promotes the dissolving agent's penetration into the micropores, achieving a synergistic effect of chemical dissolution and physical displacement, thoroughly removing blockages from the pore throats, and avoiding secondary precipitation of dissolution products.