55 results about "Technological research" patented technology

The invention belongs to the technical field of acoustic measurement, and particularly relates to an acoustic flow tube test platform and a test method thereof, transmission loss measurement of an acoustic metasurface under a flow field working condition is carried out through the constructed acoustic flow tube test platform, and a test piece mounting tube of the acoustic flow tube test platform can be used for mounting most acoustic metasurface test pieces. The related technical research of the acoustic metasurface is facilitated; meanwhile, the test platform creates a flow acoustic measurement environment, weakens the turbulence pressure disturbance influence by means of a reference signal, self-spectrum and cross-spectrum signal processing method based on a scattering matrix theory, and adopts a double-load method to perform parameter solution on a scattering matrix and calculate a class of acoustic characteristics of the acoustic metasurface to be tested, thereby solving the problem of low Mach number (llt; the method can be used for measuring the transmission loss of the acoustic metasurface in the low and medium frequency range (300-2000Hz) under the tangential flow (0.3 Mach), and the technology can be widely applied to the fields of unmanned aerial vehicles, eVTOLs, household appliances, automobiles and the like with noise reduction requirements.

The invention discloses a power grid primary frequency modulation control model based on large-scale compressed air energy storage power generation, which is used for carrying out key technical research by adopting a research method combining current situation investigation, theoretical analysis, simulation calculation, database establishment, numerical simulation, test verification, development of process parameters and summarization and induction. And finally, an own compressed air energy storage technology is formed and popularized to practical engineering application. Through the complex heat exchange system, the turbine system, the heat storage system, the compression system and the like which are complex in characteristics and mutually coupled, the influence on the power grid in different operation modes of energy storage and energy release is studied and mastered, through theoretical research and numerical simulation, the response time of the energy storage power station is shortened as much as possible, the fastest load response speed is achieved, and the energy storage and energy release efficiency is improved. And requirements of power grid frequency modulation and peak regulation are satisfied.

The invention relates to the technical research field of ocean engineering construction, in particular to a pier scour depth prediction method based on the combination of physical simulation and numerical simulation, which is based on the fact that a physical model test can accurately reflect local microcosmic interaction between sediment and water flow, and can better reflect actual physical rules in spatial distribution. The numerical simulation can more accurately reflect the nonlinear coupling change rule between the hydrodynamic force and the sediment action under the condition of different Reynolds numbers. Accordingly, numerical simulation and physical model tests are combined, the prediction accuracy of the local scouring form of the pier can be improved, the number of tests can be reduced, and the research cost can be reduced.

The invention relates to the technical field of drilling and mining equipment integrity management, in particular to an RCM-based drilling and mining equipment management method and system, and the method comprises the steps: collecting and analyzing basic information through a server, and then carrying out the important degree evaluation method research and risk quantitative evaluation technology research of drilling and mining key equipment; and finally, comprehensively and quantitatively evaluating the importance degree of each part in the drilling and production key moving equipment and the risk degree of a fault mode, and providing a scientific decision for the maintenance of the drilling and production key moving equipment in combination with the actual maintenance conditions and operation characteristics of the drilling and production key moving equipment. The system comprises an acquisition module, and a sensor device, a sensor detection module, a server, an importance evaluation module, a risk evaluation module and a maintenance decision module which are in communication connection in sequence. Through the management method and system, scientific maintenance of the drilling and mining equipment can be realized.

1. The name of the design product: roller extrusion injury safety body feeling device. 2. The use of the design product: used for simulating the process of roller extrusion, for users to experience the relevant operation, which can be used for training operators to be familiar with the use of roller extrusion equipment, and also can be used for related technical research and display, helping people to understand the principle and effect of roller extrusion more intuitively. 3. The design points of the design product: the combination of shape and color. 4. The picture or photo that best indicates the design points: perspective view. 5. The design for which protection is sought contains color. 6. The bottom surface of the design product is a part that is not easy to see or cannot be seen during use, and the top view is omitted.

The utility model provides safety anti-falling equipment for house building construction, and belongs to the field of house building construction technology research. In order to solve the problems that according to existing house building construction safety anti-falling equipment, when a heavy object falls onto an installation piece, the heavy object shakes, the balance of a suspension platform is affected, and potential safety hazards are caused, a protection table is additionally arranged at the upper end of the suspension platform, and a heavy object fixing pad is arranged on a heavy object falling table; during use, if a heavy object falls onto the protection platform, the corners of the heavy object can be inserted into the gaps between the fixing units of the heavy object fixing pad, so that the heavy object is fixed in the gaps, the heavy object is prevented from shaking, the balance of the suspension platform is prevented from being influenced by the heavy object, and normal operation of the suspension platform is guaranteed.

The utility model relates to the technical research field of resistance detection and recording and appearance detection of thermoelectric refrigeration devices, in particular to a device for automatically detecting and recording the resistance of a thermoelectric refrigeration device. The device comprises a computer, a displacement control system, a coordinate platform, a visual microscope and a resistance test system, the computer, the displacement control system, the visual microscope and the resistance test system are placed on the surface of the coordinate platform, and the computer is connected with the displacement control system and the resistance test system. And a displacement controller and a mechanical control part of the displacement control system, a fixed arm of the coordinate platform, a microscope fixing bracket of the visual microscope and a resistance tester of the resistance test system are respectively fixed on a platform mounting surface of the coordinate platform through bolts. According to the utility model, accurate positioning, resistance detection recording and appearance detection can be carried out on the thermoelectric device with the size from millimeter to submicron, and the device has the characteristics of high precision, high automation degree, high stability, easy popularization and the like.

The present invention belongs to the technical research field of wind tunnel tests, and discloses a device for accurately measuring the total pressure of the settling chamber of an arc-heated wind tunnel. The measuring device comprises a cooling pipe, a high-voltage insulating hose and a solid-liquid separator which are sequentially connected through a loose flange nut and a gasket. The front end of the cooling pipe is installed on the total pressure measurement port of the settling chamber of the arc-heated wind tunnel. The cooling pipe is used for reducing the temperature of the measured gas, the high-voltage insulating hose is used for isolating the high voltage of the arc-heated wind tunnel, and the solid-liquid separator is used for separating the impurities in the measured gas flow. The measuring device reduces the gas temperature through the cooling pipe, isolates the high voltage through the insulating pipe, and separates the impurities through the solid-liquid separator, solving the technical problem of difficult accurate measurement of the total pressure caused by the high voltage, high total temperature and multi-phase flow of the incoming flow in the arc-heated wind tunnel. The measuring device has a simple structure, low cost and high efficiency, realizes the accurate measurement of the total pressure of the settling chamber of the arc-heated wind tunnel, provides a technical basis for model development and scientific research, and has engineering practical value.

The present application belongs to the technical field of acoustic measurement, and particularly relates to an acoustic flow tube test platform and a test method thereof, wherein the transfer loss measurement of an acoustic metasurface under a flow field working condition is performed through the acoustic flow tube test platform, the test piece installation tube of the acoustic flow tube test platform can install most of the test pieces of the acoustic metasurface, and is beneficial to the acoustic metasurface related technology research; meanwhile, the test platform creates a flow acoustic measurement environment, based on the scattering matrix theory, the reference signal, the self-spectrum and the cross-spectrum signal processing method are used to weaken the influence of the turbulent flow pressure disturbance, the double load method is used to solve the parameters of the scattering matrix and calculate the acoustic characteristics of the acoustic metasurface to be measured, and the transfer loss measurement problem of the acoustic metasurface under the low Mach number (<0.3 Mach) tangential flow and in the low-middle frequency range (300-2000 Hz) is solved, and the technology will be widely used in the fields requiring noise reduction such as unmanned aerial vehicles, eVTOL, household appliances, automobiles and the like.

The present invention provides a reliability assessment method and system considering the microgrid supporting the distribution network. Based on the Monte Carlo simulation framework, by developing the modeling process of the self-controlled grid-connected microgrid, a probabilistic reliability model is established to describe the microgrid applicable to various standard scenarios, and the reliability of the distribution network with multiple MGs connected to the grid is assessed. The mixed integer linear programming technology is used to optimize the scheduling and resource management; the microgrid components are simplified into equivalent distributed generation units and integrated into the overall analysis framework, which effectively reduces the complexity of the calculation, significantly improves the efficiency of the reliability assessment of the distribution system, and realizes the function of reliability assessment of the distribution network. The framework and model proposed by the present invention are adapted to economic and technical research, and enhance the reliability of the distribution system with multiple MGs; it is an accurate and simple reliability assessment method, which reduces the computational burden and improves the efficiency of the reliability assessment of the distribution network.

The utility model relates to the related technical field of surveying and mapping devices, and discloses a constructional engineering technology research cost on-site surveying and mapping device which comprises a base, a surveying and mapping device is rotatably connected to the upper surface of the base, a fixing shell is fixedly connected to the outer wall of the surveying and mapping device, and a first sliding column is slidably connected to the interior of the fixing shell. The outer wall of the first sliding column is fixedly connected with a limiting block, the outer wall of the first sliding column is slidably connected with a first spring, one end of the first sliding column is fixedly connected with a first clamping block, and one end of the first spring is fixedly connected to the outer wall of the first clamping block. According to the utility model, the first clamping block is pushed to be clamped in the inner wall of the clamping groove, the first sliding column is driven to slide in the fixed shell again, and the limiting block is prompted to recover the fit state with the outer wall of the fixed shell, so that the effect of quickly installing the rainproof plate is achieved, and equipment such as a surveying and mapping device can be effectively protected from being eroded by rainwater; the service life of equipment is prolonged, and the maintenance and replacement frequency is reduced.

The utility model provides a massage bowl, and belongs to the technical research field of massagers. In order to solve the problem that an existing massage device is inconvenient to use, a handheld ring and an adjusting block connected with the handheld ring are additionally arranged on a massage bowl body; when the convex surface of the massage bowl body needs to be used for massaging a patient, the handheld ring can be moved to the center of the massage bowl body and is fixed, an operator can insert five fingers into the handheld ring to tightly hold the grasping ball, and the convex surface of the massage bowl body is rotated to carry out looping massage or kneading and pushing on the patient; when the bowl edge of the massage bowl body needs to be used for pressing the acupuncture points of a patient, the handheld ring can be moved to the bowl edge of the massage bowl body and fixed, so that an operator can hold the handheld ring conveniently, and then the bowl edge of the massage bowl body is used for pressing the acupuncture points of the patient.

The invention relates to the technical research field of thermoelectric refrigeration device resistance detection and recording and appearance detection, in particular to a device and a method for automatically detecting and recording the resistance of a thermoelectric refrigeration device. The device comprises a computer, a displacement control system, a coordinate platform, a visual microscope and a resistance test system, the computer, the displacement control system, the visual microscope and the resistance test system are placed on the surface of the coordinate platform, and the computer is connected with the displacement control system and the resistance test system. And a displacement controller and a mechanical control part of the displacement control system, a fixed arm of the coordinate platform, a microscope fixing bracket of the visual microscope and a resistance tester of the resistance test system are respectively fixed on a platform mounting surface of the coordinate platform through bolts. According to the invention, precise positioning, resistance detection recording and appearance detection can be carried out on the thermoelectric device with a millimeter-to-submicron size, and the device has the characteristics of high precision, high automation degree, high stability, easy popularization and the like.

The invention provides a horizontal directional drilling construction method for municipal underground pipelines, which comprises the following steps of: investigating a field actual construction area, and collecting and analyzing stratum data; setting parameters; gradually implementing; the construction scheme is optimized; an implementation scheme is determined, and the monitoring device performs real-time monitoring. The method has the beneficial effects that the horizontal directional drilling construction technology for research is applied to construction of underground pipelines under the complex conditions, and construction technology research of horizontal directional drilling under the complex municipal pipe network conditions is formed by combining previous horizontal directional drilling construction and construction quality control research results. According to the technical research, pipeline laying construction can be effectively carried out under complex construction conditions, the construction quality is enhanced, the cost can be saved, the influence on the surrounding environment in the construction process is reduced, and the method is expected to be widely applied to construction areas with complex urban underground pipeline distribution, close to building structures or crossing rivers and railways and the like. And certain economic, social and environmental benefits are obtained.

The present invention belongs to the field of infrastructure technology, specifically a construction method for a subway underground excavation station project. The construction technology of the subway underground excavation station project is initially developed through research methods such as technical investigation, theoretical analysis and numerical simulation, advanced geological prediction, field experiments and field tests, induction and summary, technical refinement, and reference to a large number of foreign technologies. At the same time, the current status of similar engineering and technical research and application at home and abroad is also fully grasped. Furthermore, the causes of excavation accidents are analyzed. Based on various investigations and analyses, a detailed research outline and work plan are formulated. Furthermore, theoretical analysis and numerical simulation methods are used to study the surrounding rock stress redistribution and displacement distribution law and the force characteristics of the support structure during the pilot tunnel excavation process; so that the construction technology of the subway underground excavation station project in the present invention can be carried out quickly and safely step by step during execution, ensuring the completion time and quality.

The invention discloses an efficient and compact heat exchanger performance test platform and method for water-carbon dioxide heat exchange, which belongs to the technical field of research on new power conversion technology, including a cooler test body, and also including a first loop system and a second loop system which are respectively arranged on the high temperature side and the low temperature side of the cooler test body, wherein the working fluid in the first loop system is supercritical carbon dioxide, and the working fluid in the second loop system is a cooling medium, and the first loop system and the second loop system are respectively provided with a first regulator and a second regulator for stabilizing the pressure of the medium; and also includes a boiler, wherein a carbon dioxide heat exchange tube and a cooling medium heat exchange tube are arranged in the boiler, and the carbon dioxide heat exchange tube and the cooling medium heat exchange tube are respectively connected to the first loop system and the second loop system, so as to verify the cooler design method and the accessibility of the performance index, obtain the operating characteristics of the supercritical carbon dioxide cooler, and effectively accelerate the research and development process of the supercritical carbon dioxide cooler.

The invention is suitable for the technical field of electric energy storage, and provides a teaching experiment platform and method for simulating a hybrid energy storage system to participate in power grid frequency modulation, the teaching experiment platform comprises a power grid, the power grid is electrically connected with an energy storage unit through an AC bus, and the output end of the power grid is also electrically connected with a simulation power generation unit. The output end of the simulation power generation unit is electrically connected with the alternating current bus, a first switch is arranged between the simulation power generation unit and the alternating current bus, and the energy storage unit at least comprises a flywheel energy storage unit, a battery energy storage unit and a simulation load unit which are connected in parallel through the alternating current bus; according to the teaching experiment platform and method for simulating the participation of the hybrid energy storage system in the power grid frequency modulation, the distributed power generation units and various types of energy storage devices are configured, and the various energy storage devices can be flexibly combined through the alternating current bus, so that various different types of microgrids are constructed; and diversified scenes are provided for technical research, equipment monitoring and personnel training of the alternating current bus.

This invention discloses a test device for simulating the dynamic response of a marine towed cable under swaying towing conditions, relating to the interdisciplinary research fields of fluid mechanics and structural mechanics. Its features include a planar motion module, a towed cable suspension module, a connecting module, and a towed cable model. The planar motion module is connected to the connecting module, which includes a first universal joint, capable of moving the first universal joint in the X and Z directions. The towed cable suspension module includes a second universal joint, which can adjust and fix the position of the second universal joint in the X and Z directions. The towed cable model is connected to the first and second universal joints. This invention can realize dynamic response tests of marine towed cables under different swaying periods and amplitudes without affecting the flow field around the towed cable during the test. The test device can be disassembled into smaller components for easy transportation and installation.

The invention belongs to the technical field of skin cancer early diagnosis, and discloses a skin cancer early diagnosis-oriented generative adversarial network method based on multi-objective co-evolution, which comprises the following steps: S1, designing a generative adversarial network based on multi-objective co-evolution, and recording the generative adversarial network as MCE-GAN, optimizing the generative adversarial network MCE-GAN by combining a multi-objective evolutionary algorithm and a co-evolutionary algorithm; s2, a skin cancer image enhancement and early diagnosis model based on MCE-GAN is constructed, the model comprises two stages of skin cancer data enhancement and skin cancer early diagnosis, and the skin cancer image enhancement and early diagnosis method based on MCE-GAN has the beneficial effects that multi-objective optimization, an evolutionary algorithm and an image generation enhancement method are fused, so that the image quality can be remarkably improved, and the image quality can be improved; the method also enhances the accuracy of the image in skin cancer diagnosis, has important practical application prospects, and provides a new technical research thought for the field of medical image analysis.

The invention discloses a graphical component model based on a data integration process and a construction method. The component model comprises an Adapter component design unit, a logic agent unit, an icon unit, an attribute item design unit, an attribute expansion unit, a configuration agent design unit, a message body design unit, a rule design unit, a table mapping unit, a message template unit and an affiliated parameter design unit; the Adapter component design unit is used for newly adding an Adapter component and maintaining an existing Adapter component; the attribute item design unit controls execution of different attributes of the Adapter component through different attribute items; and the rule design unit defines various service rules to perform cleaning and conversion service processing on the message. According to the method, a standardized development process and an implementation method are combined with functions provided by the system, so that the information integration requirement is quickly met, the time cost is saved, the system stability is reliably guaranteed, and the time loss caused by technical research and technical development is reduced.

The application discloses a technical term extraction method for large-scale text data, and comprises the following steps: step S1, first, a set of term candidate words is generated, after obtaining a candidate data set, the term candidates need to be sorted and screened, so that the final technical term is determined; step S2, technical terms in text data including news text and PDF files of scientific and technological literature are extracted, for the PDF files, text content extraction is first carried out, text content is obtained, and then technical term extraction is carried out on the text content. The technical term extraction method for large-scale text data is used for technical term extraction for large-scale text data, acquires a field research theme, constructs a scientific and technological research and development event, and realizes extraction of event arguments and trigger words through an event extraction algorithm based on deep learning, so that a scientific and technological event library is formed.

The application discloses a component-controllable simulated moon soil preparation method based on thermal phase change and belongs to the technical field of moon soil simulation material preparation.The application realizes controllable adjustment of the content of main mineral phases (plagioclase, pyroxene, olivine and amorphous phase) through thermal melting and crystallization processes, and determines the mixing ratio in combination with a nonlinear programming model, so that the simulated moon soil is highly similar to the target moon soil in terms of mineral phase composition, microstructure, optical performance and thermal performance.The method provides a high-fidelity simulation material with adjustable components for the ground experiment of ISRU technology (such as sintering, metallurgy and in-situ 3D printing), and solves the problem that the traditional simulation material preparation method cannot perform fine component factor test design in the related technical research process.

The invention relates to the technical research field of ocean engineering construction, in particular to a method for predicting local scouring of a pier, which innovatively combines a pier local scouring empirical formula which is verified by actual measurement data and is suitable for a target sea area with a two-dimensional numerical simulation technology. The selected empirical formula is fit based on a large amount of measured data, so that the calculation process is simple, convenient and rapid, and the high precision of a prediction result is ensured.

The utility model belongs to the technical field of urban waste water supply pipeline treatment, and particularly relates to an indoor simulation device for urban waste water supply pipeline filling. The system comprises an urban waste water supply pipeline which is provided with a grouting port; a grouting material containing a curing agent is stored in the storage barrel; a material injection opening in one side of the stirring mechanism is communicated with the material storage barrel, a material outlet in the other side of the stirring mechanism is communicated with a grouting opening of the urban waste water supply pipeline through a grouting pipe, and a grouting pump is arranged on the grouting pipe; a water outlet of the water tank is communicated with a water inlet of the stirring mechanism. The indoor simulation device is high in practicability, easy to implement and capable of being used for filling large urban waste water supply pipelines in the future; meanwhile, the device provides support for solving the problems of excavation and backfilling and surface collapse in actual engineering, the simulation characteristic of the device assists technical research and optimization, and development of the urban waste water supply pipeline treatment technology is powerfully promoted.

The application discloses a kind of based on semantic medical robot synchronous positioning and mapping technical research method, method includes: obtaining the environment around robot;According to the environment information of surrounding, robot positioning is carried out;The map of current environment is constructed;According to the feature of different objects, medical staff or medical equipment is segmented;Optimized map information is constructed;Design based on semantic medical robot positioning and mapping;On the basis of ORB-SLAM3, semantic information is added.The method provided by the application comprehensively considers the flow of medical staff and patient under complex hospital environment, and the use of semantic information can also enable medical robot to identify medical equipment, lay the foundation for executing other higher-level tasks.

The utility model provides a tool box for smearing a screw anti-occlusion agent, and belongs to the field of screw machining technology research. In order to solve the problem that an existing spraying device is inconvenient to operate, a nozzle ring is additionally arranged on the outer side of a screw limiting hole, and a spraying mechanism connected with the nozzle ring is additionally arranged, so that the periphery of the surface of a screw is sprayed; during use, the anti-seizure agent is conveyed into the nozzle ring through the spraying mechanism to spray the screw, manual spraying by an operator is not needed, operation is convenient, and it can be guaranteed that the periphery of the screw is sprayed.

This invention discloses a variable dip angle model device and its application method for simulating reservoir development at different dip angles. The variable dip angle model device includes: a first variable dip angle hexahedral core model, a second variable dip angle hexahedral core model, and a third variable dip angle hexahedral core model; the first variable dip angle hexahedral core model is connected to the second variable dip angle hexahedral core model; the second variable dip angle hexahedral core model is also connected to the third variable dip angle hexahedral core model. This invention solves the current difficulty in achieving indoor experimental testing techniques at different dip angles, provides an objective experimental basis for numerical simulation technology research, improves this aspect of technical research, and helps in optimizing enhanced oil recovery technologies for this type of reservoir.

The invention relates to the technical field of fabricated roads, in particular to an H-shaped steel beam lattice supported bonded prestress fabricated road and a construction method, which are characterized in that structural design is innovated, a process method is optimized, and structural design and key technology research work of an H-shaped steel beam lattice supporting system modular fabricated road are implemented. The overall technical scheme follows the principles of H-shaped steel beam lattice type supporting, cast-in-place conversion section reinforcing joints, efficient hoisting of integrated prefabricated shear wallboards with curbstone beams, L-shaped steel hanging beams assisting in steel bar mesh in place, crossed arrangement of bonded prestressed tendons in the longitudinal and transverse directions, multi-hole-site high-pressure grouting and comprehensive pavement of asphalt surface layers, and engineering practice is combined. Research and development and application of a new technology are enhanced, a new technology system is constructed, a technical standard is expected to be formed, and reliable technical support is provided for high-quality development of the technical field of road engineering in China for industry reference.

This invention discloses a measurement platform for generating low Reynolds number and low turbulence flow based on the ejection principle, belonging to the field of hydrodynamic experimental technology research. The measurement platform comprises a high-speed inlet section, a convergence section, an experimental section, and an outlet section connected sequentially, forming a linear, non-closed measurement platform. The high-speed inlet section introduces a high-speed water flow with controllable velocity via a high-speed pump. A flow guide device within the high-speed inlet section directs the water flow to both sides before it enters the convergence section. Adjustable-height stilling water tanks are connected to both sides of the convergence section to regulate the pressure of the still water within the convergence section. The adjustable-speed water flow and the adjustable-pressure still water mix in the convergence section based on the ejection principle, ultimately generating a low Reynolds number and low turbulence flow in the experimental section, where hydrodynamic experiments are conducted. The outlet section is used to discharge the water flowing out of the experimental section. This invention solves the problem that existing traditional water tunnel devices cannot generate low Reynolds number and stable velocity flows, and features a simple structure that is easy to assemble and disassemble.

The invention belongs to the technical field of solid waste resource utilization and environmental health, relates to a chlorine dioxide generation technology based on ceramsite preparation, and discloses a preparation method of ceramsite with integrated functions of deodorization, peculiar smell removal, disinfection and sterilization for a semi-closed space environment. An economical, green and safe ClO2 slow-release carrier-porous ceramsite with high porosity and proper strength is prepared, on the basis, a composite gel is used for blocking a slow-release precursor and balancing Hmigration and ClO2 diffusion rate, a safe, stable and long-acting ClO2 slow-release system is constructed, the system has sterilization and deodorization functions on a semi-closed space environment, and the system has a good application prospect. A new method and a new thought are provided for comprehensive utilization of the coal gangue, and the method has important significance in promoting technical research of environment-friendly ClO2.