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Full-automatic QuECHERS experimental device
PendingCN119510790AImprove experimental efficiencyImprove applicabilityPreparing sample for investigationProcess engineeringQuechers
The invention relates to a full-automatic QuECHERS experimental device, and relates to the technical field of sample pretreatment, the full-automatic QuECHERS experimental device comprises an extraction unit and a pipetting unit, the extraction unit comprises: a first tube rack module comprising a plurality of test tube racks; a carrying mechanical arm; the first cap screwing module comprises a tube cap clamping and lifting assembly acting on a tube cap, a tube body clamping and rotating assembly acting on a tube body and a first sliding rail assembly for conveying a test tube to a next station; the sample adding module comprises a homogeneous proton adding module and a salt pouring module; the second cap screwing module comprises a pipe body clamping and rotating assembly, a pipe cap clamping and lifting assembly and a second sliding rail assembly for realizing communication and conveying of the extraction unit and the pipetting unit; the invention discloses a pipetting mechanical arm and a gun head frame. The device is provided with the extraction unit capable of synchronously performing extraction operation and the pipetting unit capable of performing pipetting operation, so that the extraction operation and the pipetting operation are synchronously performed during pesticide residue inspection, and the experimental efficiency and the applicability of the device are effectively improved.
Owner:BEIJING HUIRONGHE TECH
Spraying device for vehicle rain test
ActiveCN222652458UEasy to adjustImprove the experimental effectVehicle testingSpraying apparatusStructural engineeringMechanical engineering
Owner:ANHUI TALANT INSTR TECH CO LTD
Ice period flow velocity prediction method based on WSO-ELM network model
InactiveCN119538752AImprove search abilityFast convergenceArtificial lifeDesign optimisation/simulationObservation dataGreat white shark
The invention relates to the technical field of laboratories, and discloses an ice period flow velocity prediction method based on a WSO-ELM network model, and the method is characterized in that the method comprises the following steps: building a dynamic ELM network model based on the WSO-ELM network model through employing a WSO optimization algorithm, employing the corresponding characteristics based on limited historical observation data and side sweeping Reida observation signals, and carrying out the prediction of the ice period flow velocity through employing a WSO algorithm; and carrying out optimization solution on model parameters by adopting a white shark optimization algorithm WSO, constructing a WSO-ELM network optimization model meeting the requirement of observing the ice-period river by the side-sweeping rada, and measuring the characteristics of the ice-period river by combining the real-time observation signal characteristics of the side-sweeping rada. Aiming at the difficulty of traditional ice period river measurement, in combination with a real-time observation result of a side sweeping rada system on an ice period river, an ELM network model based on a WSO optimization network coefficient is adopted, historical observation data is utilized, the network model is trained, and an optimal network structure meeting a training sample is obtained.
Owner:NANJING MICROMAX ELECTRONIC TECH CO LTD
Portable water body micro-plastic sample separation and enrichment device and use method thereof
PendingCN119510090APrecise volume controlavoid pollutionPreparing sample for investigationWater storageFilter system
The invention discloses a portable water body micro-plastic sample separation and enrichment device and a use method thereof, and particularly relates to the field of environmental protection experiment equipment.The portable water body micro-plastic sample separation and enrichment device comprises a pressure system, a filtering system and a supporting device.According to the portable water body micro-plastic sample separation and enrichment device, a water storage barrel with scales is adopted, the volume of a water sample is accurately controlled, and different experiment requirements are met; after the stored water reaches the expected volume, the spherical valve is opened, so that the water sample flows through the filtering membrane under the action of gravity, and the unpowered filtering is realized; when water outlet is blocked, pressurization can be performed through a pressure system, a water sample is forced to be rapidly filtered, or a spherical valve is closed, and a filter membrane in the filter screen device is replaced, so that the collection efficiency is improved or the collection requirements of different micro-plastic particle sizes are met, the filter device is designed to be of a detachable structure, and the filter membrane is convenient to replace; after collection, the filter membrane is directly taken out to clean and collect the collected plastic particles, the operation is simple, the cost is low, the occupied space is small, the movement is flexible, and the experiment effect is good.
Owner:INST OF HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CHINESE ACAD OF GEOLOGICAL SCI
Cold and hot impact test box
ActiveCN222490101Uquick changeImprove the experimental effectHeating or cooling apparatusAir-pressure/air-lock chambersCold airVentilation tube
The utility model discloses a hot and cold shock test box which comprises a hot and cold shock test box main body, the bottom of the hot and cold shock test box main body is fixedly connected with a heating box, the top of the hot and cold shock test box main body is fixedly connected with a refrigerating box, and the outer walls of the two sides of the hot and cold shock test box main body are fixedly connected with mounting boxes. A second ventilation pipe is installed on the inner side of the installation box in a penetrating mode, a second electric valve is arranged on the outer wall of the second ventilation pipe, an exhaust fan is fixedly connected to the interior of the installation box, and a supporting frame is fixedly connected to the inner side wall of the cold and hot impact test box body. According to the utility model, by starting the second electric valve and the exhaust fan, hot air and cold air in the cold and hot shock test box main body can be exhausted through the second ventilation pipe when the exhaust fan runs, so that the cold air and the hot air in the cold and hot shock test box main body are difficult to replace quickly; the experiment effect of the cold and hot impact test box on an experiment sample is improved.
Owner:DONGGUAN TIANSHUO TESTING EQUIPMENT CO LTD
Non-magnetic insulation angle fine adjustment mechanism and method suitable for high-temperature chamber
PendingCN119469227AImprove verticalityImprove the experimental effectMeasurement apparatus componentsStands/trestlesMagnetic insulationFerromagnetism
The invention relates to a non-magnetic insulation angle fine adjustment mechanism and method suitable for a high-temperature chamber, and the mechanism comprises a pedestal which is installed in the chamber and can adjust the installation angle, the pedestal is fixedly provided with a fine adjustment element which can elastically deform, and the fine adjustment element is connected with a to-be-adjusted component. A pulling cable is connected to the component to be adjusted, the pulling cable extends out of the cavity and is connected with a fine adjustment actuating mechanism outside the cavity, the pulling stress on the pulling cable is adjusted through the fine adjustment actuating mechanism, so that the fine adjustment element generates elastic deformation, and adjustment of the angle and / or position of the component to be adjusted is achieved. Fine adjustment operation can be carried out outside the high-temperature cavity, and the fine adjustment mechanism is in an elastic loading state in the whole adjustment range without clearance. The whole device does not contain any ferromagnetic material and can work for a long time in a high-temperature environment.
Owner:CHINA INSTITUTE OF ATOMIC ENERGY
Palladium-loaded magnetic silicon dioxide nanofluid, preparation method, application and oil displacement agent
ActiveCN119581164AGood dispersionEnhanced overall recoveryMaterial nanotechnologyBacteriaActive matterOrganism
The invention discloses a palladium-loaded magnetic silicon dioxide nanofluid, a preparation method, application and an oil-displacing agent, the nanofluid is obtained by adopting a green biological base solution, and surface active substances generated by microbial metabolism have a stable dispersion effect; the magnetic core can be recycled by virtue of the action of a magnetic field, the shell layer material provides stable dispersing capacity, and the loaded palladium can inhibit the blockage damage of microorganism breeding to the stratum; the bioactive components and the nanoparticles can synergistically improve the crude oil recovery rate, the oil recovery mechanism is disclosed through microscopic oil drop stripping and imbibition experiments, and the core displacement experiment effect is remarkable.
Owner:YANGTZE UNIVERSITY
Mini part basket for freezing trimmer
ActiveCN222537396UImprove the experimental effectIncrease contact rateAbrasive machine appurtenancesStructural engineeringMechanical engineering
The utility model relates to the field of freezing edge trimming equipment, in particular to a mini part basket for a freezing edge trimmer, which comprises a roller, a part basket, a part basket cover and a hook spring, the roller is arranged in the freezing edge trimmer, a mounting groove is formed in the part basket, one end of the hook spring is clamped in the mounting groove, and the other end of the hook spring is clamped in the mounting groove. The other end of the hook spring is connected to the roller in a clamped mode, and the part basket cover is detachably connected to the part basket. The device has the effect of improving the machining effect during small-batch part experiments.
Owner:SHOWTAN TECHNO MACHINE NANJING CO LTD
Virus inoculation device for spraying rice blast stock solution to experimental rice field
InactiveCN119111272AExpand coveragequick coverageMovable spraying apparatusLiquid spraying apparatusAgricultural engineeringPaddy field
The invention relates to the technical field of agriculture, in particular to a virus inoculation device for spraying rice blast stock solution to an experimental rice field, which comprises an inoculation box, and the outer side wall of the inoculation box is fixedly connected with a controller; the top of the inoculation box is communicated with an n-shaped liquid drainage pipeline, the liquid drainage pipeline is internally communicated with a liquid drainage pump, and the controller is used for controlling the liquid drainage pump to be opened and closed; a supporting rod is fixedly connected to the side wall of the upper portion of the inoculation box, and a plurality of supporting frames are fixedly connected to the top of the supporting rod and fixedly connected with the liquid drainage pipeline; the end, away from the inoculation box, of the drainage pipeline penetrates through the supporting rod, the bottom of the supporting rod is rotationally connected with a rotating rod, the side, close to the supporting rod, of the rotating rod is fixedly connected with an s-shaped rotating pipeline, the rotating pipeline communicates with the drainage pipeline, the rotating rod is fixedly connected with a plurality of fixing frames, and the fixing frames are all fixedly connected with the drainage pipeline; the device is complete in structure, the spraying range can be effectively expanded, the spraying uniformity of the virus stock solution in the experimental rice field is improved, and therefore the experimental effect is improved.
Owner:NUCLEAR BIOTECHNOLOGY RES INST OF XINJIANG ACAD OF AGRI SCI (XINJIANG UYGUR AUTONOMOUS REGION BIOTECHNOLOGY RES CENT)
Lidocaine ethosome gel
PendingCN119139215AImprove the experimental effectShort onset timeOrganic active ingredientsAntipyreticActive agentSurface-active agents
The invention relates to the technical field of medicines, in particular to lidocaine ethosome gel as well as a preparation method and application thereof. The invention provides lidocaine ethosome gel. The lidocaine ethosome gel comprises the following components in percentage by weight: (a) 2-4% of lidocaine; (b) 5%-10% by weight of a film forming material; (c) 0.5%-2% by weight of a surfactant; (d) 0.01-1% by weight of an antioxidant; and (e) a solvent, wherein the solvent is selected from ethanol and water.
Owner:SHANDONG BESTCOMM PHARMA CO LTD
Plasmid vector pSY1A for wheat germ cell-free expression system, transformant and application thereof
The application discloses a pSY1A plasmid vector for a wheat germ cell-free expression system, which is constructed by introducing an ampicillin resistance gene, an Ori replicon, a T7 promoter, a translation enhancer, a MCS (multiple cloning site), a 3'-UTR sequence and a T7 terminator sequence on the basis of part of a sequence of an E. coli plasmid pUC19. The pSY1A plasmid vector has a MCS into which an exogenous gene can be inserted, and the MCS and a transcription assembly constitute a transcription module, so that the transcription module can be preserved by preserving the plasmid, and in-vitro transcription of the wheat germ cell-free expression system becomes more convenient and faster.
Owner:SHENYANG SYNDY PHARM CO LTD
Reference-free light field image quality assessment method and system based on deep meta-learning
The present invention provides a method and system for evaluating the quality of a light field image without reference based on deep meta-learning, respectively constructing a training set including a quality evaluation task without reference and a test set including a target evaluation task; constructing a deep meta-learning model including a Swin Transformer network structure; based on the training set, learning prior knowledge of distortion to obtain a quality prior model; fine-tuning the quality prior model on the test set to obtain a final light field image quality evaluation model; and using the light field image quality evaluation model to evaluate the quality of the light field image to be evaluated. The present invention overcomes the problem of insufficient combination of spatial and angular information of light field images, which leads to a large difference between experimental results and real results, as well as the fitting problem and inadaptability to various distortions that may be caused by using deep learning, and adapts to each type of distortion, with greatly enhanced performance.
Owner:ANHUI UNIV
A laboratory feeding device
ActiveCN224271043UReduce stuck problemsAvoid sticky buildupTransportation and packagingMixer accessoriesExperimental laboratoryBottle
This utility model relates to the field of chemical experimental equipment technology, specifically to a laboratory feeding device. The feeding device is characterized by comprising a mounting frame, which includes a lower material tray support and an upper feeding support. A feeding bottle is mounted on the material tray support, and a reaction vessel is connected below the feeding bottle. The feeding bottle includes a solid material bottle, and a discharge port is provided at the lower end of the solid material bottle. A solid feeding mechanism is provided on the feeding support, and the solid feeding mechanism includes a vertical drive mechanism. A vibration mechanism is provided at the lower end of the vertical drive mechanism. The vertical drive mechanism drives the vibration mechanism to move downward to contact the solid material bottle, causing residual material inside the solid material bottle to vibrate and fall off. The vibration mechanism enables vibratory feeding, causing material adhering to the walls of the solid material container to fall off, ensuring smooth material feeding and guaranteeing experimental efficiency and quality.
Owner:融域智慧(西安)智能科技有限公司
Experimental device for simulating pH stability of organism
ActiveCN222618510UStir wellavoid contactMaterial analysis by observing effect on chemical indicatorEducational modelsPeristaltic pumpBiological body
The utility model relates to an experiment device for simulating organism pH stability, which comprises a medicament bottle, a magnetic stirrer, a test bottle, a delivery pipe, a peristaltic pump and a ph sensor, the test bottle is arranged on the magnetic stirrer, the test bottle is communicated with the medicament bottle through the delivery pipe, and the ph sensor is arranged in a test cavity of the test bottle. The peristaltic pump drives the conveying pipe to convey the medicament in the medicament bottle into the test bottle, and the magnetic stirrer uniformly stirs the test material in the test cavity, so that the ph sensor can accurately and quickly measure the ph value of the test material, the influence of the original color of the test material is avoided, the test value is more accurate, and the test effect is good. Meanwhile, an operator can be prevented from being in contact with a test material, the test risk is effectively reduced, and the safety is high.
Owner:HUIZHOU MIDDLE SCHOOL
A multi-beam irradiation target chamber
ActiveCN224417498UAccurately switch transmission pathsAvoid overlapping interferenceBeam sourceScattering effect
The utility model relates to target chamber technical field, specifically disclose a kind of multi-beam irradiation target chamber, including cylinder, cylinder two ends are provided with front end cap and rear end cap, front end cap is located in the one end of cylinder near beam source, and is provided with several beam source connecting cylinders on front end cap, beam control mechanism is set between beam source connecting cylinder and beam passage, the other end of beam passage extends to the region where target material is located, and target material is set in cylinder by target material positioning mechanism. Through the one-to-one correspondence of multiple beam source connecting cylinders and the beam passage in cylinder, the independent on-off control of multi-beam can be realized;Through the setting of target material positioning frame and arc clamping block, both the stability of target material in the irradiation process is ensured, and the convenient replacement of target material can be realized. The problem that the space intersection between different beams when the multi-beam passes through the rigid channel in the conventional target chamber can cause serious scattering effect and non-intended energy deposition superposition;And target material switching and attitude adjustment difficulty.
Owner:LANZHOU ION CHEMICAL TECHNOLOGY CO LTD
Experimental device for exploring relationship between pressure of liquid on bottom of container and shape of container
ActiveCN222365323UReduce learning difficultyEasy to learnEducational modelsMechanical engineeringMechanics
Owner:HUNAN SHANJIAN TEACHING INSTRUMENT EQUIPMENT CO LTD
Feeding device of cooking equipment and cooking equipment
PendingCN119214484ASimple structureImprove the experimental effectCooking vesselsControl systemProcess engineering
The invention discloses a cooking equipment feeding device and cooking equipment. The feeding device comprises a material box support used for loading a material box, a feeding device used for feeding materials in the material box and a control system. The feeding device can turn over the material box and open the material box so that materials in the material grids of the material box can be fed. The feeding device further comprises one or more than one vibration generator which acts on vibration of the material box and drives materials in the material box to vibrate. The control system controls the position, time, intensity, mode and duration of vibration generated by the vibration generator; the position where the vibration generator vibrates the material box is the film sealing position of the opening of the material grid and / or the box body of the material box. By introducing the vibration generator, the unsolved industrial problem of material box feeding, especially the problem of film sealing material box feeding, is solved.
Owner:SHENZHEN LIXIN IND CO LTD
Oil-filled electrical equipment overheating multipoint fault simulation experiment device and method
PendingCN119644204AAccurate evaluationSimple structureTransformers testingElectric equipmentMineral oil
The invention relates to an oil-filled electrical equipment overheating multipoint fault simulation experiment device and method, and belongs to the field of oil-filled electrical equipment monitoring and fault diagnosis. The heating device at least comprises a sealing cavity and a plurality of heating bodies arranged in the sealing cavity, a sealing cover is arranged at the top of the sealing cavity, a plurality of ceramic sleeves penetrate through the sealing cover and are connected to the heating bodies in the cavity, and the suspension height of the heating bodies in the sealing cavity is adjusted according to the lengths of the ceramic sleeves in the sealing cavity, the heating body at least comprises a resistance wire and a spherical shell, the resistance wire is arranged in the spherical shell, and a powdery insulating heat transfer body is filled between the resistance wire and the spherical shell; the spherical shell is connected with the ceramic sleeve and internally penetrates through the joint, the resistance wire is connected with a power line in the ceramic sleeve, and the power line extends out of the sealed tank body through the ceramic sleeve. According to the invention, overheating faults caused by various factors can be simulated, so that the influence of different factors on pyrolysis and gas production of mineral oil is researched.
Owner:STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST +1
Electrolysis water hydrogen production wastewater treatment flocculation reagent dosing experiment device
The utility model relates to wastewater treatment technical field discloses electrolytic water hydrogen production wastewater treatment flocculation reagent dosing experimental device, including raw water storage unit, reagent preparation unit, reaction unit, sampling detection unit and data processing unit, and reaction unit communicates with raw water storage unit and reagent preparation unit, and sampling detection unit is connected with reaction unit, and data processing unit is connected with sampling detection unit signal, the utility model discloses when the flocculating agent of wastewater treatment or operating parameter changes, through sampling detection unit, the instantaneous water quality of reaction unit and mixed water quality and instantaneous effluent water quality and mixed effluent water quality are collected, and then through data collection unit, the experimental raw water consumption in experimental process, reagent dosing amount and water quality of inlet and outlet are exported analysis, through comparing the running mode under different parameters, the reagent dosing combination of economic, reasonable, efficient, stable operation is drawn, and the effluent water quality is more stable, and the operation cost is more economic.
Owner:CHINA THREE GORGES RENEWABLES (GRP) CO LTD
Xenon lamp aging tester
ActiveCN224231586UUniform strengthUniform irradiationWeather/light/corrosion resistanceMechanical engineeringPhysics
The utility model discloses a xenon lamp aging testing machine, which comprises a case, an aging structure and a heat dissipation structure, the aging structure is arranged on the case, the heat dissipation structure is arranged on the case, the aging structure comprises an irradiation unit, a rotating unit and a heating unit, the irradiation unit is fixedly arranged on the side wall of the case, and the rotating unit is fixedly arranged on the side wall of the case. The rotating unit is arranged at the bottom of the case and located in front of the irradiation unit, and the heating units are arranged at the bottom of the case and located on the two sides of the rotating unit. The utility model belongs to the technical field of aging equipment, particularly relates to a xenon lamp aging tester, and effectively solves the problems that light rays emitted by a xenon lamp light source of the xenon lamp aging tester are not uniformly distributed, and a sample is fixedly placed, so that the illumination intensity on the surface of the sample is not consistent, and the accuracy of a test result is influenced.
Owner:MEIYA SYNTHETICS (TIANJIN) CO LTD
Sample collimation adjusting device for neutron scattering rheological experiment
ActiveCN224066685Uprecise alignmentImprove the experimental effectMaterial analysis using wave/particle radiationNeutron scatteringMechanical engineering
The utility model provides a sample collimation adjusting device for a neutron scattering rheological experiment. The sample collimation adjusting device comprises a first movement assembly, a second movement assembly, a third movement assembly and a diaphragm assembly. The second movement assembly is arranged on the first movement assembly, and the first movement assembly can drive the second movement assembly to move in the first axial direction. The third movement assembly is arranged on the second movement assembly, and the second movement assembly can drive the third movement assembly to move in the second axial direction. The diaphragm assembly is arranged on the third movement assembly, the third movement assembly can drive the diaphragm assembly to move in the third axial direction, and every two of the first axial direction, the second axial direction and the third axial direction are perpendicular. The diaphragm assembly comprises a diaphragm positioning sight bead, the diaphragm positioning sight bead is provided with a cross-shaped slit, the cross-shaped slit is used for allowing neutrons to pass through so that the neutrons can be clustered, the clustered neutrons can hit on a rheological sample of the rheological table, high-precision alignment is achieved, and the experiment effect is improved.
Owner:CHINA SPALLATION NEUTRON SOURCE SCI CENT +1
Aviation alternative fuel bunsen burner for sufficient mixing of different kinds of gases
ActiveCN117663146Bwell mixedImprove the experimental effectTransportation and packagingMixer accessoriesAviationBunsen burner
The application discloses an aviation alternative fuel Bunsen burner capable of sufficiently mixing different kinds of gases, which comprises a mixing chamber, an air inlet assembly and a nozzle assembly, the two ends of the mixing chamber are respectively provided with a mixing chamber inlet and a mixing chamber outlet, and a gas mixing structure is arranged in the mixing chamber; the air inlet assembly comprises a gas path connecting nozzle, the gas path connecting nozzle is detachably installed at the mixing chamber inlet, a plurality of air inlet joints are arranged on the gas path connecting nozzle, and a gas supply device is communicated with the tail end of the air inlet joint; the nozzle assembly is detachably installed at the mixing chamber outlet, and the mixed gas in the mixing chamber is sprayed out through the nozzle assembly. The application can sufficiently and uniformly mix the gases, so that better and more ideal experimental effects are achieved; meanwhile, the air inlet assembly of the application can be changed according to the kinds of the gases to be mixed, and the air inlet joints are increased, so that the effect of sufficiently and uniformly mixing a plurality of gases is achieved.
Owner:BEIHANG UNIV
High-temperature testing device for thermal shock resistant coating sample
InactiveCN119291117AEasy to fixImprove the experimental effectImage enhancementImage analysisConnection tableThermal shock
The invention relates to the technical field of thermal shock resistance testing of coatings, and discloses a high-temperature testing device for a thermal shock resistance coating sample, which comprises a base, a fixing device is arranged at the top of the base, a connecting table is arranged on the side surface of the fixing device, the connecting table is fixedly connected with the base, and a mounting groove is formed in the connecting table. A connecting block is arranged at the position of the mounting groove, the connecting block is fixedly connected with the connecting table and divides the mounting groove into three to five bins, a clamping plate is arranged on the end face of the mounting groove, the clamping plate is fixedly connected with the connecting table, a movable groove is formed in the top of the connecting table, a movable base is arranged on the movable groove, and a scanning device is arranged on the top of the movable base; the device is provided with the fixing device, so that the samples can be fixed, a plurality of samples can be selectively selected for experiments, the samples are mutually control groups, the experiment effect is better, meanwhile, the scanning device is further arranged, human eyes are replaced by a machine for recognition, and the accuracy of performance data obtained through testing is improved.
Owner:ZHONGYUAN CRITICAL METAL LAB
Constant temperature drying oven for determining chlorate content and determination method using the drying oven
ActiveCN118287165Bimprove accuracyImprove the experimental effectHeating or cooling apparatusEvaporator accessoriesThermodynamicsDry box
The invention discloses a constant temperature drying oven for determining chlorate content and a determination method using the drying oven, and relates to the technical field of constant temperature drying ovens. The invention comprises a placing plate and a partition plate of a main body of the constant temperature drying oven, wherein a placing plate is movably installed inside the main body of the constant temperature drying oven, and a plurality of groups of partition plates are installed on the upper end of the placing plate, and mounting columns are movably installed inside the main body of the constant temperature drying oven, and the placing plate and the plurality of groups of partition plates are fixedly connected to the mounting columns, and a heating module is installed inside the plurality of groups of partition plates, and a plurality of groups of reserved holes are provided on the upper end of the placing plate. The invention provides a placing plate and a partition plate, and the plurality of groups of partition plates divide the upper end of the placing plate into a plurality of placing spaces, and the heating modules inside the partition plates heat the placing spaces respectively, so that when taking a group of experimental reagents, the other plurality of groups of experimental reagents maintain a dry constant temperature effect, thereby improving the accuracy of experimental data and the experimental effect.
Owner:HUIZHOU SHENHUA CHEM CO LTD
Device for measuring gravitational acceleration
ActiveCN222280856Uheight adjustableEasy height adjustmentGravitational wave measurementMetal sphereGravitational force
The utility model relates to the technical field of physics teaching, and discloses a device for measuring gravitational acceleration, which comprises a base, the top of the base is fixedly connected with a support, the outer wall of the support is provided with an adjusting mechanism, the top of the adjusting mechanism is provided with a supporting plate, the top of the supporting plate is rotatably connected with an adjusting wheel disc, and the adjusting wheel disc is provided with a rotating shaft. A cycloid is wound around the outer ring of the adjusting wheel disc, and a metal ball is fixedly connected to the bottom end of the cycloid. According to the device for measuring the gravitational acceleration, through the arranged adjusting mechanism, after the device is adjusted to a proper position, a rotating block I is reversely rotated, so that an arc-shaped block can press and limit a bracket again, a sliding cylinder cannot move any more, the purpose of height adjustment is further achieved, the height of a supporting plate is convenient to adjust in the using process, and the use is convenient. Therefore, the device can be flexibly suitable for testing environments with different heights, is convenient for an operator to use in an adjusting process, facilitates the further development of gravitational acceleration measurement, and improves the flexible performance of the device.
Owner:CHINA GEOLOGICAL SURVEY GEOPHYSICAL SURVEY CENT
Modeling system for canyon river and alluvial fan interaction
ActiveCN118837071BSimple structureeasy to operateHydrodynamic testingCanyonEnvironmental engineering
The application relates to a simulation experiment system of canyon river and alluvial fan interaction, which comprises a groundwater reservoir, a water inlet pool, a water and sand mixing narrow slot, a sediment deposition pool and a water outlet pool. The simulation experiment system can meet the research needs of river and alluvial fan interaction, can inversely analyze the process of alluvial fan development forming an alluvial plain, and has the advantages of simple operation, precise control, convenient measurement, low cost and the like.
Owner:CHANGJIANG SURVEY PLANNING DESIGN & RES CO LTD
Tester for atmospheric circulation teaching
ActiveCN222619296Uincrease awarenessimprove understandingEducational modelsCold airHeat conservation
The utility model relates to the technical field of atmospheric circulation teaching, and discloses a tester for atmospheric circulation teaching. According to the device, a storage box body is fixedly connected to the lower end of the experiment box frame, a heat preservation pad is fixedly connected to one side of the interior of the storage box body, a drawer is slidably connected to the side, opposite to the storage box body, of the heat preservation pad, and a handle is fixedly connected to one side of the drawer; one end, opposite to the experiment box frame, of the storage box body is fixedly connected with a plurality of footstands. An ice block placing box is additionally arranged for the tester used for atmospheric circulation teaching, and a heat preservation pad is used for guaranteeing the temperature of ice blocks and preventing the ice blocks from being excessively melted to affect the teaching effect. By placing ice cubes, the movement and influence of a cold air mass in atmospheric circulation can be simulated. Students can observe the interaction between a cold air mass and a warm air mass so as to more intuitively understand the influence of air masses with different temperatures on atmospheric circulation.
Owner:山东卓辰教育装备有限公司
An ultra-low temperature open frost heave experimental system and experimental method
ActiveCN114878629BImprove the experimental effectMechanical apparatusMaterial thermal coefficient of expansionMeasurement deviceFrost heaving
The invention discloses an ultra-low temperature open frost heave experimental system and an experimental method, comprising a refrigeration device, which comprises a refrigeration component; a sample box, wherein a top cover is provided at the top opening, and the bottom of the inner cavity of the sample box is covered with a bottom plate, the bottom plate can slide up and down along the inner wall of the sample box, the refrigeration component is arranged on the top cover, and the cooling structure of the refrigeration component is directly opposite to the inner cavity of the sample box; a clamping device, which has a clamping end that can be adjusted up and down, and the clamping end can press the top cover and the sample box to each other; a frost heave amount measuring device, which is fixed to the sample box, and the frost heave amount measuring device is provided with a telescopic measuring end, the measuring end extends upward and always abuts against the bottom plate. The invention clamps the top cover and the sample box in advance through the clamping end, and the clamped top cover limits the expansion direction of the sample, so that the sample can only expand downward and squeeze the bottom plate, and the displacement of the bottom plate drives the displacement of the measuring end, and the frost heave strain of the rock and soil body can be obtained by detecting the position change of the measuring end.
Owner:SHANTOU UNIV
Target cabin for light-gas gun equipment
ActiveCN222364481Uavoid disturbanceavoid harmAmmunition testingStrength propertiesMaterial synthesisPressure experiment
The utility model relates to the technical field of power and material discipline testing, and discloses a target cabin for light-gas gun equipment, which comprises a target cabin body, a target cabin door arranged at the front end of the target cabin body, a drainage body arranged outside the target cabin door, a perspective window arranged in the middle of the target cabin body, and a speedometer arranged in the perspective window. The bottom of the target cabin body is arranged on the target cabin sliding rail through the target chamber sliding block support set, and the target cabin capable of moving front and back is movably formed. According to the utility model, the high-pressure gas at the tail part can be timely controlled to be drained and discharged through the peripheral holes in the drainage body after the projectile is launched at a high speed, and the disturbance to the target chamber after a large amount of high-pressure gas at the tail part flies out of the gun barrel is avoided. Operation and use are safe and reliable, and the economic effect is good; the injury to experimenters caused by accidents of high-pressure gas in the device in the high-pressure experiment process and after the experiment is finished can be avoided. And the dynamic high-pressure experiment of physical properties of shock waves and mechanical properties of material synthesis under high-speed collision can be met.
Owner:HENAN FENXING ELECTROMECHANICAL TECH CO LTD
Virtual simulation practical training system and method for scientific experiment
InactiveCN119579372Afreedom of choiceImprove choice satisfactionCosmonautic condition simulationsData processing applicationsSimulationSoftware engineering
The invention relates to the technical field of virtual simulation, in particular to a virtual simulation practical training system and method for a scientific experiment, and the system comprises a display module which is used for receiving user information and displaying the experiment information of a user; the selection module is used for enabling a user to select any experiment name in the experiment information and generating an experiment information result corresponding to the experiment name; the acquisition module is used for acquiring a security level and a security operation specification; the experiment display module is used for displaying safety operation specification requirements, standard operation steps, error experiment results, experiment equipment and experiment articles corresponding to any experiment name selected by the user; and the experiment comparison module is used for judging and correcting the actual operation steps of the user according to the comparison result. According to the method, the problem of low experiment efficiency is solved through step correction in the experiment process.
Owner:GUANGDONG FURUIDE TECH SERVICE CO LTD