337 results about "Ultrasonic technology" patented technology

The invention belongs to the technical field of nondestructive testing, and particularly relates to a detection method for quantitatively evaluating fatigue damage in a pipeline through a nonlinear ultrasonic technology. 316 stainless steel and SA335GRP-11 ferrite steel samples are adopted, a welding seam area is formed through V-shaped groove welding, fatigue loading is conducted, and actual pipeline fatigue damage is simulated; for the samples with different fatigue cycles, nonlinear response signals of the samples are obtained; fourier transform is carried out on the obtained signal to obtain an energy spectrum of the signal, and energy changes of the signal on a fundamental frequency band and a second harmonic frequency band are analyzed; and calculating a nonlinear coefficient, and analyzing a change rule of the nonlinear coefficient along with fatigue cycles, so that the evolution process of fatigue damage in the pipeline is evaluated. According to the method, energy is used for replacing the amplitude value, on the basis of the formula principle, integration is used for replacing the amplitude value to improve the intensity of the characterization nonlinear ultrasonic signal, the early stage of damage and the later stage of crack initiation are detected, and reliable guarantee is provided for safe operation of an industrial pipeline system.

The invention relates to the technical field of analyzing materials by utilizing an ultrasonic technology, in particular to a pipeline welding seam nondestructive testing method and system based on the ultrasonic technology, and the method comprises the following steps: acquiring echo signals collected by each ultrasonic probe at a welding seam position of a pipeline; analyzing the similarity degree of the time domain local features of the echo signals of each ultrasonic probe and the ultrasonic probe at the adjacent position under the same wavelet transform scale, and determining position similar probes and position similar parameters of each ultrasonic probe; according to the position similar parameters of the ultrasonic probe and the change difference of the echo signals of the ultrasonic probe and the corresponding position similar probe under each scale, determining a correction coefficient under each scale, and correcting a detail coefficient of the echo signals of the ultrasonic probe under each scale; obtaining a reconstruction signal based on the corrected detail coefficient under each scale; and comparing the reconstruction signal of each ultrasonic probe with the standard echo signal to detect the weld defect. By adopting the method, false detection and missing detection of tiny defects can be reduced.

The invention discloses a nondestructive testing device for a steel profile and a testing method of the nondestructive testing device. According to the method disclosed by the invention, the ultrasonic technology is combined with optical imaging, so that synchronous detection of surface and internal defects can be completed at one time. Ultrasonic waves penetrate through the interior of the steel profile, and hidden defects such as cracks and air holes are accurately recognized; the optical camera module captures visible problems such as surface scratches and corrosion in real time. The integrated detection mode avoids the tedious process of step-by-step operation required by a traditional method, for example, magnetic powder detection of surface defects and ultrasonic scanning of an internal structure are not needed, the detection period is greatly shortened, and the method is especially suitable for steel structure buildings, bridge engineering and other scenes with high requirements for detection efficiency and has good application prospects. The full-process automatic design effectively reduces the influence of human intervention, and ensures the scanning continuity of the detection area; the intelligent algorithm automatically analyzes the ultrasonic echo signal and the optical image data, and judges the defect level according to the preset standard, thereby avoiding subjective misjudgment of manual visual inspection.

The invention discloses a subcutaneous injection site detection and recommendation system based on an intelligent algorithm, and aims to improve the safety of long-term subcutaneous injection and the drug absorption efficiency and reduce the risk of related complications such as subcutaneous hemorrhage, subcutaneous induration and subcutaneous fat hyperplasia at the same time. Comprising a subcutaneous tissue detection module for acquiring subcutaneous vascular distribution, fat layer thickness and induration state of a target part through infrared imaging and ultrasonic technologies and generating subcutaneous tissue characteristic data; the data processing module analyzes the feature data by using an image recognition algorithm, and recognizes a blood vessel dense region, induration and a part where fat hyperplasia has occurred; the injection part recommendation module is used for evaluating an analysis result of the data processing module based on a machine learning algorithm in combination with personalized injection historical data of the patient, and generating an optimal injection part recommendation scheme avoiding a risk area; the intelligent imaging and data analysis technology is utilized, the subcutaneous injection part selection accuracy is improved, and the patient comfort and the treatment effect are improved.

The invention belongs to the technical field of acoustic devices and ultrasound, and discloses an ultrasonic transducer, a multi-layer gradient acoustic impedance matching layer and a preparation method of the multi-layer gradient acoustic impedance matching layer, and the multi-layer gradient acoustic impedance matching layer comprises a plurality of acoustic impedance layers which are arranged in sequence and have different acoustic impedances; in the direction from the first acoustic impedance layer to the last acoustic impedance layer, the acoustic impedance of the acoustic impedance layer is in a decreasing trend; the surface of the previous acoustic impedance layer is provided with a micro-columnar structure, the micro-columnar structure extends into the next acoustic impedance layer, a mechanical interlocking interface is formed between the previous acoustic impedance layer and the next acoustic impedance layer through the micro-columnar structure, and the micro-columnar structure is gradually thinned from the bottom to the tip. According to the invention, the gradient impedance design of the acoustic impedance layers significantly reduces the acoustic reflection between the acoustic impedance layers, improves the acoustic energy transmission efficiency, and widens the working bandwidth of the ultrasonic device; the micro-columnar structure not only maintains the stability of interlayer adhesion in a high vibration or thermal stress environment, but also further smooths gradient transition and reduces interface reflection.

The invention discloses a fructus psoraleae total flavone extract as well as a preparation method and application thereof in promoting hair growth. According to the preparation method of the fructus psoraleae total flavone extract, the specific eutectic solvent is adopted, the ultrasonic technology is combined for extraction, the content of total flavone in the fructus psoraleae extract can be remarkably increased, and the fructus psoraleae total flavone can be efficiently extracted; and the adopted extraction solvent has the advantages of greenness, environmental protection, efficient process, low cost, high safety and the like, and can solve the problems of the existing extraction process. The malaytea scurfpea fruit total flavone extract obtained by the method has the effect of promoting hair growth and can remarkably promote hair follicle cell proliferation and prolong the hair growth period, the prepared external gel product has the hair growth effect, the preparation method is simple, and external use is convenient. The malaytea scurfpea fruit total flavone extract provided by the invention can be used for developing more cosmetics and medical products for preventing alopecia and promoting hair growth, and a new scheme is provided for green extraction of natural active ingredients and treatment of alopecia.

The invention discloses a liquid information detection method and system based on an ultrasonic technology. The method comprises the following steps: firstly, acquiring ultrasonic multiple echo signals under a preset working condition; the peak information, the time domain characteristic, the waveform characteristic, the phase characteristic and other information of the echo are obtained; secondly, establishing a machine learning model, and inputting feature information such as echo peak voltage, time delay and phase into the machine learning model for training; obtaining a trained machine learning model; and finally, inputting an actually detected ultrasonic echo signal into the trained machine learning model for processing to obtain the liquid information distribution condition of the detected target. According to the method, liquid component identification and high-precision detection of liquid information of different liquid levels are realized through array ultrasonic transducer and echo signal analysis, echo signal characteristics can be quickly mapped to liquid attribute information in combination with a machine learning model, and excellent intelligent processing capacity is shown. The method is high in real-time performance and applicability, can adapt to different liquid types and densities and various environmental conditions, and meets the detection requirements in an industrial environment and the application scene of higher-precision detection.

The invention discloses a metal crack repairing method and device based on an ultrasonic technology. The method comprises the steps that metal powder is selected as brazing filler metal and pretreated; cleaning cracks in the metal base material and spraying a boron nitride coating; mixing an ethanol solution with brazing filler metal powder according to a preset proportion, stirring to form a uniform suspension, injecting the suspension into the crack filling area through a needle tube in a vacuum negative pressure environment, preheating to accelerate solvent volatilization, and only leaving and compacting the brazing filler metal powder; clamping and fixing the base material and putting the base material into a vacuum chamber; electron beam melting is started, snakelike scanning is conducted in the length direction of the crack, and meanwhile ultrasonic vibration is conducted on the crack; and after fusion is completed, ultrasonic vibration is continuously carried out to restrain grain coarsening. Aiming at crack repair of a high-temperature metal part, through the coupling effect of electron beam melting and ultrasonic vibration, the limitation of a single technology is broken through, and a complete and synergistic repair system is formed.

The invention relates to the field of medical materials and medical instruments, and discloses a dry bioprosthetic valve and a preparation method thereof.The preparation method comprises the following steps that S1, pericardium and a cross-linking agent solution are mixed for a cross-linking reaction; s2, carrying out first dehydration treatment on the crosslinked pericardium by adopting a first dehydration solution with gradually increased concentration gradient under an ultrasonic condition; and S3, carrying out second dehydration treatment on the pericardium subjected to the first dehydration treatment by adopting a second dehydration solvent, so as to obtain the dried bioprosthetic valve. According to the preparation method provided by the invention, ethanol, isopropanol and water in a specific proportion are adopted to prepare a dehydration solution with gradient concentration, and two-step dehydration drying is carried out in combination with the physical effect of an ultrasonic technology and glycerol, so that rapid rehydration of the bioprosthetic valve is realized, and the original shape and mechanical property of the bioprosthetic valve can be better recovered after rehydration; and the immediate hemodynamic stability of the valve is improved.

The invention provides a logarithmic bus bearing roller defect detection method and system based on an ultrasonic technology, and the method comprises the steps: obtaining an ultrasonic detection signal of the surface of a logarithmic bus bearing roller, and carrying out the preprocessing of the ultrasonic detection signal, and obtaining a first echo signal sequence; obtaining an average value sequence, a skewness sequence, a kurtosis sequence and a first high-order cumulant sequence based on the first echo signal sequence; correcting the first high-order cumulant sequence based on the average value sequence to obtain a second high-order cumulant sequence; optimizing the first echo signal sequence based on the dictionary matrix and the signal sparse coefficient vector to obtain a second echo signal sequence; and fusing the sequences to obtain a multi-dimensional feature vector sequence, and comparing the multi-dimensional feature vector sequence with a preset vector threshold to detect whether the logarithmic bus bearing roller has defects or not. According to the method, the problem of beam distortion of traditional ultrasonic waves during detection of the roller defects of the logarithmic bus bearing is solved, and the detection precision is remarkably improved.

The invention belongs to the technical field of ultrasonic waves, and particularly relates to a phase-controlled ultrasonic focusing optimization method based on an improved equilibrium optimization algorithm, and the algorithm comprises the steps: carrying out the initialization of mixed particles; establishing a delay and amplitude parameter library; dividing a target area; establishing a target function; setting a disturbance coefficient and a generation probability; the parameter fitness is evaluated in an iterative mode and preferential selection is carried out; the method specifically comprises the steps that a multi-physical field simulation model is established based on environment information; setting simulation data, performing preliminary amplitude and waveform simulation on ultrasound, and establishing an amplitude parameter library and a delay parameter library; an improved balance optimization algorithm is operated, parameters in an amplitude parameter library and a delay parameter library are intelligently selected through mixed particle initialization, iterative simulation is carried out, and optimal output is carried out; and performing simulation according to the output delay and amplitude parameters to obtain a final waveform. According to the method, optimization of ultrasonic delay parameters and distribution of amplitude parameters can be coordinated, and the focusing capacity of phase-controlled ultrasound in a complex environment is improved through visual ultrasonic beam simulation.

The invention relates to the field of composite pultrusion machines, in particular to a self-adaptive pultrusion system of a composite pultrusion machine and a control method of the self-adaptive pultrusion system. The self-adaptive pultrusion system comprises a pultrusion mold, a drawing device, an ultrasonic detection module and a control module; the ultrasonic detection module is used for emitting ultrasonic waves and receiving ultrasonic signals penetrating through the composite material so as to obtain acoustic parameters related to the curing degree of the composite material; and the control module is configured to calculate the current curing degree of the composite material based on the acoustic parameters, compare the current curing degree with a preset target curing degree, and adjust the drawing speed of the drawing device in real time according to a comparison result so as to perform closed-loop feedback control on the curing process of the composite material. According to the embodiment of the invention, the ultrasonic technology is utilized to carry out online and nondestructive detection on the curing degree of the composite material, and the closed-loop feedback control is carried out on the drawing speed based on the detection result, so that the synchronous optimization of the production efficiency and the product quality is realized.

The embodiment of the present application provides a kind of humidity control device and refrigerator, humidity control device is connected with the drawer interchamber of refrigerator, including filter, fan, air duct component, ventilation cover, air duct component includes air inlet and air outlet, is connected with the drawer interchamber by air outlet, ventilation cover is set on the shell of refrigerator, and is connected with air inlet, for introducing ambient air;Fan is arranged in air duct component, for adjusting the air flow rate in air duct component;Filter is arranged in air duct component, for filtering ambient air.The embodiment of the present application can when the internal humidity of drawer interchamber is less than preset value range, start fan to intensify the air flow speed in air duct component, more quickly introduce ambient air into drawer interchamber, to increase the internal humidity of drawer interchamber, humidification is carried out by the way of introducing ambient air, can solve the problem that existing active humidity control needs to rely on water box and ultrasonic wave technology.

The invention discloses a focusing type acoustic streaming heat dissipation device facing a chip. The device belongs to the crossing field of ultrasonic technology and heat dissipation technology and is composed of a piezoelectric stack, an acoustic lens, a splitter plate, a base, a supporting rod, a copper electrode and the like. According to the device, geometric parameter configuration of the splitter plate, the piezoelectric stack and the acoustic lens is optimized, and a double-piezoelectric-plate stacked structure is adopted to enhance the ultrasonic resonance effect; high-frequency alternating voltage is applied to the copper electrodes at the two ends of the piezoelectric stack, high-frequency sound waves are excited through the inverse piezoelectric effect, and after the sound waves are focused through the sound lens, a gradient sound pressure field is formed in a cavity formed by the splitter plate and the piezoelectric stack; air molecules are driven to move directionally based on the acoustic streaming effect, so that air flow at an air inlet is accelerated by sound pressure to form high-flow-rate focusing jet flow at an air outlet, and targeted forced convection heat dissipation of a chip heat source is realized. According to the device, the ultrasonic technology and the heat dissipation technology are combined, the whole device is simple in structure, free of moving parts and low in noise, and various heat dissipation requirements can be met in an array mode.

The invention discloses a four-side elastic gauze fabric and a preparation process optimization method. The four-side elastic gauze fabric comprises a base cloth layer and a functional layer, the base cloth layer comprises the following components: 30%-50% of polyester fibers, 10%-30% of nanoparticles, 5%-10% of a composite material, 10%-15% of organic resin, 1%-8% of a binder, 5%-20% of spandex and 10%-30% of chinlon; the functional layer comprises the following components: 25%-35% of an anti-ultraviolet agent, 20%-45% of an antibacterial agent and 30%-50% of a softening agent; the anti-ultraviolet agent, the antibacterial agent and the softening agent are added into the fabric, the fabric elasticity can be improved while the fabric is resistant to ultraviolet rays and bacteria, in addition, defect analysis is conducted on the processed fabric through the ultrasonic technology, the processing technology parameters and the proportion value of different components are reversely adjusted according to the defect analysis result, the fabric processing efficiency is improved, and the fabric quality is improved. Meanwhile, it is guaranteed that the processed fabric has high elasticity and softness.

According to the fault early warning system for the wind power booster station provided by the invention, the limitation of traditional single-point monitoring is broken through by fusing the infrared ultrasonic technology and the ultrahigh frequency technology through the non-contact sensor, so that the early fault detection rate is greatly improved; the composite heat dissipation system suppresses the temperature rise of a transformer hot spot based on a dynamic heat management mechanism of a phase change material and a heat pipe, and the energy-saving efficiency is improved; the edge calculation early warning center converts temperature, partial discharge, strain and other multi-source heterogeneous data into a unified health degree index through a weighted fusion algorithm, and in combination with an equipment topology correlation analysis model, the positioning accuracy of a fault source is greatly improved, and the early warning response time delay is greatly reduced.

The invention belongs to the technical field of lithium ion battery lithium precipitation detection, and particularly relates to a lithium ion battery lithium precipitation diagnosis method based on an ultrasonic sensing technology. According to the method, lithium ion battery lithium precipitation fault diagnosis can be realized, the characteristic relation between the ultrasonic technology and the lithium ion battery lithium precipitation morphology is proposed for the first time, and a theoretical basis is provided for establishing an ultrasonic-based lithium precipitation early warning mechanism. And a theoretical basis is provided for deeply researching lithium precipitation distribution characteristics and a lithium dendrite evolution mechanism. And a key technical support is provided for developing a safer and more reliable next-generation energy storage system.

Described is a method for instilling the haptic dimension of texture to virtual and holographic objects using mid-air ultrasonic technology. A set of features is extracted from imported images using their associated displacement maps. Textural qualities such as the micro and macro roughness are then computed and fed to a haptic mapping function together with information about the dynamic motion of the user's hands during holographic touch. Mid-air haptic textures are then synthesized and projected onto the user's bare hands. Further, mid-air haptic technology enables tactile exploration of virtual objects in digital environments. When a user's prior and current expectations and rendered tactile texture differ, user immersion can break. A study aims at mitigating this by integrating user expectations into the rendering algorithm of mid-air haptic textures and establishes a relationship between visual and mid-air haptic roughness.

The invention relates to a bridge crack three-dimensional parameter detection device and method based on UWB and ultrasonic technology, and the method comprises the steps: arranging measurement points in a to-be-detected region of a bridge according to a grid, distributing a unique identifier for each measurement point, and storing the position information of each measurement point; acquiring the position of the detection probe in real time through a UWB positioning network, and controlling the detection probe to move to each detection point according to a preset path; an ultrasonic detection module is started at the measuring point, and the crack depth and the crack trend are calculated; acquiring a crack image through a camera, extracting a crack contour through image processing, and calculating a crack width and a crack distribution density; and performing crack grading evaluation to generate a detection report. The method has the beneficial effects that the moving path of the detection probe can be accurately planned based on the pre-arranged position information of the detection points, so that the detection probe can quickly and accurately reach each detection point, the time and errors of manually searching the detection points are reduced, and the efficiency of detection work is greatly improved.

The invention discloses an optimization method for ultrasonic measurement and drilling of water and soil loss data, belongs to the technical field of water and soil conservation and environmental monitoring, and realizes efficient monitoring and accurate prediction of a water and soil loss process by combining an ultrasonic technology and water and soil loss monitoring data analysis. The method can overcome the limitation of a traditional monitoring technology, provides more accurate water and soil loss data, and improves the accuracy and reliability of water and soil loss prediction by optimizing a data processing model. Experimental results show that the precision of water and soil loss prediction can be effectively improved by using the method, a scientific basis is provided for water and soil conservation and environmental protection, and the method has a wide application prospect.

The invention provides an ultrasonic transducer suitability judgment system based on transient monitoring, and belongs to the technical field of ultrasonic waves. The system comprises a data acquisition module used for acquiring key transient parameters and steady-state parameters of operation of the ultrasonic transducer; the dynamic threshold value calculation module is used for calculating an initial current threshold value based on the collected key transient parameters and steady state parameters in combination with preset weight coefficients corresponding to the parameters and a preset basic current threshold value; and the intelligent judgment and feedback module is used for comparing the collected working current with an initial current threshold value and determining the ultrasonic adaptation condition. According to the method, the energy consumption state of the transducer is directly reflected in real time through transient parameter judgment and the collected working current value, sudden load change can immediately cause current fluctuation, temperature accumulation does not need to be waited, millisecond-level response can be achieved, load abnormity can be early warned in advance, and equipment damage or machining failure caused by lagging judgment is avoided.

The invention relates to an ultrasonic technology, and provides an obstacle recognition method and device, electronic equipment and a computer storage medium, the method comprises the steps that a plurality of spatial points are acquired, and the plurality of spatial points comprise corresponding points of a plurality of ultrasonic points collected by at least one ultrasonic sensor at the same moment in the same preset coordinate system; the plurality of spatial points are clustered to obtain at least one clustering cluster, and the clustering distance between any two spatial points in the clustering process is determined according to the ranging distance and the echo intensity of the ultrasonic wave point corresponding to each spatial point in the any two spatial points; and carrying out obstacle identification on each cluster. According to the invention, the accuracy and robustness of obstacle identification can be improved.

The invention relates to the technical field of battery charging control, and particularly provides a power battery multi-stage dynamic charging control method based on ultrasonic monitoring feedback, which comprises the following steps: constructing a safe charging boundary constraint of a power battery, and generating a multi-stage charging strategy under the safe charging boundary constraint; when the SOC value of the power battery is charged to the SOC switching point, the next stage of charging is switched; in the charging process of each stage, the lithium precipitation risk state of the power battery is monitored by adopting an ultrasonic technology, characteristic values are monitored in advance, and the lithium precipitation risk is evaluated; and when the risk of lithium precipitation occurs, entering the next stage of charging in advance and dynamically adjusting the SOC switching point. According to the method, the lithium precipitation risk is detected and fed back in real time in the charging process, charging control is dynamically and adaptively carried out, and collaborative optimization of charging efficiency and safety is achieved.

The utility model discloses a biological attachment prevention and control system for a source water conveying pipeline. The biological attachment prevention and control system comprises a reservoir, a biological attachment filtering unit, an ozone-ultrasonic oxidation unit and a power supply unit, wherein the biological attachment filtering unit, the ozone-ultrasonic oxidation unit and the power supply unit are arranged in the reservoir. Under the condition that operation of the domestic drinking water source water conveying pipeline is not affected, prevention and control of biological attachments of the source water conveying pipeline are achieved. An ultrasonic treatment technology is combined with ozone for use, so that the generation probability of hydroxyl radicals can be increased, the cavitation effect and mechanical disturbance are enhanced, the reaction time is shortened, and the cost is saved. Ultrasonic waves are used in the ozone oxidation process, the reaction speed can be increased, compared with the technology of independently using ultrasonic waves or ozone, the ozone-ultrasonic technology has the higher bacterium and microorganism killing effect, the survival rate of biological attachments in water and eggs of the biological attachments is reduced to the maximum extent, and the biological attachments are prevented from adhering and growing in a water conveying pipeline.

The invention relates to a contact network ultrasonic impact vibration deicing device and method capable of being deployed on a pantograph, and belongs to the field of power ultrasonic technology application. Comprising an ultrasonic deicer and an ultrasonic generator, and the ultrasonic deicer is connected with the ultrasonic generator. The ultrasonic deicer comprises an upper machine shell, a lower machine shell, a tool head, piezoelectric ceramics, an electrode plate, a deicing working head, a spring and a free mass block, the electrode plate is connected with the ultrasonic generator, the electrode plate and the piezoelectric ceramics are connected with the tool head, the tool head and the free mass block placed on the tool head are arranged in the lower machine shell, and the piezoelectric ceramics are connected with the free mass block. An upper machine shell is arranged on the upper portion of the lower machine shell, a spring is arranged in the upper machine shell, one end of the deicing working head penetrates through the upper machine shell to be matched with the free mass block, and the two ends of the spring abut against the upper machine shell and the deicing working head respectively. The problems that deicing efficiency is low and deicing is not thorough are effectively solved, and deicing and power receiving and current taking can be conducted synchronously in the train running process.

The invention provides an optic nerve regulation and control system based on an ultrasonic technology, a first ultrasonic module is deployed on the outer side of a target human eyelid and is provided with an Archimedes spiral type first ultrasonic array facing the human eye, and the first ultrasonic array is configured to generate a gathered ultrasonic beam which acts on a human eye retina ganglion cell area in a targeted manner; the positioning module is deployed on the outer side of a target human eyelid and is configured to measure three-dimensional geometric data when a human eyeball horizontally faces the front and measure the depth distance of a human eye retina ganglion cell area in the human eye; the optic nerve response prediction module is pre-trained with an optic nerve response prediction model facing a target human body, and the optic nerve response prediction model is configured to adjust sound intensity output of the first ultrasonic array based on stimulation feedback prediction of human eye retina ganglion cells. According to the invention, the optic nerve regulation and control system satisfies non-intrusive, high-precision and self-adaptive requirements, and has optic nerve regulation and control and repair functions.

The invention relates to the technical field of preparation of environmental functional materials, and discloses a directional synthesis method of magnetic porous iron-doped graphitized biochar, which is realized by the following steps: cooperatively inducing low-temperature graphitization by utilizing a biomass endogenous S < 2 > self-template and nano-diamond; performing double-complexing ultrasonic impregnation on the iron precursor to realize nanoscale dispersion; performing staged pyrolysis, pre-carbonizing in an inert atmosphere to construct a carbon skeleton, and synchronously completing iron reduction and graphitization in a reducing atmosphere; performing mixed pickling to synchronously remove the template and construct a passivation layer; and finally, carrying out magnetic separation to obtain the high-porosity and uniformly iron-doped magnetic graphitized charcoal. A graphitized porous structure is realized through cooperation of a low-temperature self-template and nano-diamond, iron agglomeration is inhibited through a double-complexing ultrasonic technology, a protective layer and active sites are synchronously constructed through mixed pickling and passivation, and three technical barriers of high-temperature collapse, iron particle inactivation and short cycle life of a traditional process are broken through.

This invention relates to an ultrasonic-assisted laser cleaning device for the inner wall of an air intake using negative pressure adsorption, belonging to the field of aircraft maintenance and surface treatment. It includes: a housing with an opening on one side of its working surface, and a flexible sealing member circumferentially disposed around the opening; a laser cleaning head disposed inside the housing; an ultrasonic amplitude transformer arranged in a ring around the laser cleaning area; an ultrasonic transducer connected to the ultrasonic amplitude transformer; a negative pressure suction unit connected to the housing for creating a negative pressure airflow field within the housing; and a high-pressure gas injection unit disposed opposite to the negative pressure suction unit for assisting in the formation of the airflow field. The ultrasonic amplitude transformer has a ring-shaped structure and is arranged in a ring array on the inner wall of the housing, with the ultrasonic transducer mounted thereon, converting electrical signals into ultrasonic vibrations via piezoelectric ceramics. This invention, by combining ultrasonic technology with laser cleaning, can adapt to cleaning areas with different radii of curvature, thereby achieving all-position cleaning.

The invention discloses a method for adjusting functional properties and oxidation resistance of potato protein, and relates to the technical field of food processing. The method comprises the following steps: extracting potato protein by adopting an alkali-solution and acid-isolation method, and modifying the potato protein by utilizing an ultrasonic technology; the ultrasonic frequency is set to be 20 kHz, the amplitude is set to be 40%, the ultrasonic time is 0-10 min, and the change rule of the potato protein structure and the functional property under different ultrasonic time is analyzed. After ultrasonic treatment, the particle size and polydispersity index of the potato protein are obviously reduced, the Zeta-potential is increased, but main strips are not changed; after 6 minutes of ultrasonic treatment, the particle size is 266.90 + / -2.26 nm, the PDI is 0.27 + / -0.03, and the Zeta-potential is-26.25 + / -0.93 mV. After 6 minutes of ultrasonic treatment, the solubility of potato protein is the highest, the foamability is improved by 1.18 times, the emulsifying activity is improved by 1.54 times, and the digestibility of simulated intestines is remarkably improved. Under the condition, the reducing power of the potato protein and the scavenging rates of DPPH, superoxide anions and hydroxyl radicals reach the maximum value.

The invention relates to efficient dust and mercury removal equipment based on the ultrasonic technology, and relates to the technical field of dust and mercury removal equipment, the efficient dust and mercury removal equipment comprises a vertically installed tank body and a supporting frame fixedly arranged on the bottom side of the tank body, an air inlet pipe is fixedly arranged on the upper portion of the tank body, a blow-off pipe is fixedly arranged at the bottom of the tank body, and an exhaust pipe is fixedly arranged on the periphery of the lower portion of the tank body; a dust removal assembly and a mercury removal assembly are arranged on the inner wall of the tank body; a base plate is fixedly arranged on the bottom side of the supporting frame, a plurality of trundles with a locking function are fixedly arranged on the bottom side of the base plate, and a traction handle is installed on the edge of the upper surface of the base plate. According to the device, when the device needs to be moved, a fixing structure of the tank body and the ground does not need to be dismantled, a single person can easily drag the tank body by means of the traction handle and the trundles, the tedious dismantling and the multi-person cooperative carrying process are avoided, time and labor cost are greatly saved, and the efficiency and convenience of device short-distance position adjustment are remarkably improved.