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2710 results about "Experimental methods" patented technology

Experimental device and experimental method for transformer oilpaper insulating thermal ageing

The invention belongs to the technical field of transformer ageing detection. An experimental device for transformer oilpaper insulating thermal ageing consists of an outer cavity, an inner cavity and a measurement-display system, wherein the inner cavity consist of a main cavity body, an oil conservator on the main cavity body, an electrode-sample test frame inside the main cavity body and a minor cavity body; the minor cavity body and the main cavity body are connected through a pipeline; a valve is arranged on the pipeline; and an air exhaust port and an oil injection port are arranged on the main cavity body. An experimental method for transformer oilpaper insulating thermal ageing comprises the following steps: 1) performing insulating-paperboard vacuum dry sample treatment; 2) placing sample and injecting oil; 3) installing the minor cavity body; 4) injecting transformer oil; 5) accelerating thermal ageing experiment; 6) measuring dielectric parameters on line to acquire related experiment data; and 7) analyzing off-line sample physicochemical parameters to acquire experiment data. The invention can measure the dielectric parameters of the samples on line in real time, regularly samples on the premise of not changing the prior test environment of the samples, and can research thermal ageing laws of oilpaper insulating materials of large-scale power transformers.
Owner:XI AN JIAOTONG UNIV

Oil-water displacement efficiency experimental method of longitudinal and planar nonhomogeneous slab models

The invention relates to an oil-water displacement efficiency experimental method of longitudinal and planar nonhomogeneous slab models, which comprises an oil-water displacement efficiency experimental method of a longitudinal nonhomogeneous slab model and an oil-water displacement efficiency experimental method of a planar nonhomogeneous slab model. The experimental method mainly comprises the following steps: 1. applying confining pressure to the core holder of a multilayer slab model, then vacuumizing the multilayer slab model with three layers slab model, injecting simulated formation water to saturate cores, and then heating; 2. injecting simulate formation oil in a piston type container into the core holder of the multilayer slab model, and carrying out water-oil displacement to establish bound water saturation level; and 3. injecting simulate formation water in the piston type container into the core holder of the multilayer slab model, and carrying out water-oil displacement to obtain accumulated displacement oil output and wateryield under different water injection multiples, and thereby, the oil displacement efficiency is obtained. The invention not only can carry out displacement experiment research on the longitudinal nonhomogeneous slab model at high temperature and pressure but also can carry out displacement experiment research of different flooding well networks on the planar nonhomogeneous slab model under high temperature and pressure. The highest pressure reached by the experimental method is 25MPa, and the highest temperature reached by the experimental method is 100 DEG C.
Owner:SOUTHWEST PETROLEUM UNIV

Experimental apparatus and method for researching response characteristic of natural gas hydrate stratum to drilling fluid intrusion

InactiveCN102323394ASafe and efficient exploration and developmentEarth material testingPermeability/surface area analysisDynamic monitoringTransfer mechanism
The invention relates to an experimental apparatus and a method for researching response characteristics of natural gas hydrate stratum to drilling fluid intrusion. The apparatus comprises a drilling fluid cycling mechanism, a high and low constant temperature experiment box, a gas permeability mechanism, a water / gas injection mechanism, a confining pressure tracking mechanism, a back pressure mechanism, a detection mechanism, an outlet metering mechanism, a rock core transferring mechanism, a sampling mechanism and an industrial control computer. The experimental methods based on the apparatus comprise an experimental method for hydrate deposit gas permeability, an experimental method for intrusion of drilling fluid to hydrate deposit and dynamic monitoring of response characteristics of the hydrate deposit during the intrusion process, and a method for fidelity transferring of hydrate deposit core. The invention provides an early stage indoor research on response characteristics of natural gas hydrate stratum to drilling fluid intrusion, so as to master influence rules of the drilling fluid intrusion on hydrate stratum physical properties, realize simulating fidelity transferring of a sample containing hydrate deposit and provide basis for future hydrate stratum exploitation and drilling safety and logging accuracy interpretation.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Natural gas hydrate deposit dynamic triaxial mechanic-acoustic-electrical synchronous test experimental device and method

The invention provides a natural gas hydrate deposit dynamic triaxial mechanic-acoustic-electrical synchronous test experimental device, and a test method. The natural gas hydrate deposit dynamic triaxial mechanic-acoustic-electrical synchronous test experimental device comprises an acoustic wave receiving device, an acoustic wave transmitting device, and a resistivity testing device. The natural gas hydrate deposit dynamic triaxial mechanic-acoustic-electrical synchronous test experiment method comprises the steps that: step A, a hydrate sample is synthesized; step B, the synthesized hydrate sample is subjected to dynamic loading, and electric-acoustic-mechanical property tests are simultaneously carried out, until the sample is subjected to shearing damage. The invention provides a mechanical response characteristic research of indoor hydrate deposit under dynamic load. With the device and the method, mechanical, electrical, and acoustic parameter synchronous testing of hydrate deposit under dynamic load can be realized. With the test data, a relationship between mechanical parameters and wave velocity can be obtained by fitting.
Owner:PETROCHINA CO LTD

Experimental system and method for MMC (multilevel modular converter) flexible direct-current transmission control protection equipment

The invention discloses an experimental system for MMC (multilevel modular converter) flexible direct-current transmission control protection equipment. The experimental system comprises a real-time digital simulator, a valve-base control electronic device of a multilevel modular converter, and a control protection device of the multilevel modular converter. The real-time digital simulator is connected with the valve-base control electronic device through optical fiber. The real-time digital simulator is connected with the control protection device through optical fiber or a cable. The control protection device is connected with the valve-base control electronic device through optical fiber or a cable. The experimental system is used for closed-loop testing on control performance, protection configuration and functions of the MMC flexible direct-current transmission control protection equipment, and can also be used for function test on valve control equipment. When a system topology changes or primary system parameters are corrected, testing is conveniently achieved by correcting a simulation model. The invention further discloses an experimental method of the experimental system for MMC flexible direct-current transmission control protection equipment.
Owner:NR ELECTRIC CO LTD +2

Device and method for gas bearing shale-seepage-temperature coupling and displacement experiment

The invention belongs to the field of rock engineering, and in particular relates to a device and a method for a gas bearing shale-seepage-temperature coupling and displacement experiment. The experimental device comprises a triaxial pressure cavity, an axial pressure loading system, a confining pressure loading system, an upstream gas pressure loading system, an upstream liquid pressure loading system, a downstream gas pressure loading and collecting system, a downstream liquid collecting system, a multi-component mixed gas collecting system, a vacuumizing device, a heating system and a data collection control system. The experimental method comprises the following steps of: fixing a test piece; applying confining pressure; applying axial pressure; heating; vacuumizing; applying upstream liquid pressure (or pre-saturated methane); applying upstream gas pressure (or applying upstream gas pressure); injecting multi-phase mixed fluid (or applying another upstream liquid pressure); performing pre-adsorptive saturation by the test piece (injecting multi-component constant-proportion mixed gas); and collecting. The experimental device can be used for applying triaxial stress to the test piece according to the actual stress condition, and remolding a stress environment according to the fact.
Owner:NORTHEASTERN UNIV

Water-gas two-phase adsorption-desorption-seepage experimental system and method for loaded coal containing methane

The invention discloses a water-gas two-phase adsorption-desorption-seepage experimental system and method for loaded coal containing methane. The water-gas two-phase adsorption-desorption-seepage experimental system for loaded coal containing methane comprises a pressure loading part, wherein the pressure loading part comprises a tank body for containing a constant-temperature water bath, a reference pot and a coal sample holder are arranged in the tank body, the gas inlet of the reference pot is connected with a high-pressure methane delivery pipeline, the gas outlet of the reference pot is connected with the gas inlet of the coal sample holder through a connecting pipeline, and the gas outlet of the coal sample holder is connected with a water-gas separation device. The water-gas two-phase seepage experimental method for loaded coal containing methane is carried out on the basis of the experimental system. By changing different loading conditions, loading paths and experimental temperatures, adsorption-desorption experiments and methane seepage experiments for the loaded coal containing methane under the conditions of different solid-gas thermal coupling can be realized, and water-gas two-phase seepage experiments and methane adsorption-desorption experiments under the condition of different moisture contents also can be realized.
Owner:HENAN POLYTECHNIC UNIV

Integrated style shear apparatus for rock structural plane and a shear experimental method for rock structural plane

An integrated style shear apparatus for rock structural plane comprises a frame system, a vertical loading system, a horizontal loading system, and a shearing system. Both the vertical loading system and the horizontal loading system are fixed on, and the shearing system is installed inside the frame system. The shearing system is used to prepare the sample of structural plane and actualize the shear test, the vertical loading system and the horizontal loading system are used to provide normal stress and shear stress for the shearing system respectively. The present invention also provides an experimental method by using the integrated style shear apparatus for rock structural plane, and steps of the method including: sample placement, sample adjustment, sample preparation, sample loading, instrument hookup, exerting normal stress, exerting horizontal stress, measurement and description of shear area, repeating experiment, and normal stress and shear stress calculation. The present invention can effectively reduce sample preparation error and experimental error, and can rapidly and accurately determine shear strength and deformation parameters of rock structural plane.
Owner:POWERCHINA HUADONG ENG COPORATION LTD

Electromagnetic-force-based Hopkinson tie/pressure bar stress wave generator and experimental method

The invention discloses an electromagnetic-force-based Hopkinson tie/pressure bar stress wave generation device and an electromagnetic-force-based Hopkinson tie/pressure bar stress wave generation method. The stress wave generation device consists of a loading gun and a power supply system, wherein the power supply system is used for providing instantaneous high current for a primary coil of the loading gun, so as to generate high electromagnetic repulsive force between the primary coil and each secondary coil. A capacitor is short in discharge time and high in discharge current, so that instantaneous high repulsive force can be generated between the primary coil and each secondary coil to generate high stress pulses, and the stress pulses are output to Hopkinson bars after being amplified by a tapered amplifier. According to the device and the method, an electromagnetic riveter is structurally improved to be applied to the loading of the separable Hopkinson pressure bars and tie bars, so that loading systems of the Hopkinson pressure bars and tie bars can be simultaneously implemented on a same device; the device and the method have the characteristics of simplicity in operation and high controllability.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Digital ship model planar motion mechanism experimental method based on CFD software

The invention provides a digital ship model plane motion organization experimental method based on computation fluid dynamics CFD software FLUENT. The method includes applying a FLUENT pre-process software GAMBIT to establish a research object model and a control domain; arranging a triangle grid on the model surface, then arranging a unstructured grid in the control domain; setting the boundary condition, joining an user-defined function UDF document, introducing dynamic grid technology, using a finite volume method based on the complete unstructured grid, realizing a pure swaying movement, a pure rising and falling movement, a pure oscillatory movement, a pure pitching movement and a pure rolling movement carried on by a plane motion organization experiment; applying a science computation software MATLAB to do Fourier expansion of a force and a moment coefficient obtained by the FLUENT, being fitted by EXCEL least squares method, obtaining a hydrodynamic force coefficient of a vertical plane and a horizontal plane as well as the related hydrodynamics analysis by dimensionless. The invention carries on the digit plane motion organization experiment using the CFD software, can satisfy the request of hydrodynamic force data in the design initial period of a submersible.
Owner:HARBIN ENG UNIV

Hydraulic power pulse oil displacement experimental facility and experimental method thereof

The invention discloses a hydraulic power pulse oil displacement experimental facility and an experimental method thereof. The experimental facility comprises a core clamping device, an annular pressure supply device, a hydraulic power pulse wave generating device, a water storage tank and an oil storage tank which are connected with the liquid inlet of the core clamping device by virtue of a water pipeline and an oil pipeline as well as a liquid container which is connected with the liquid outlet of the core clamping device; wherein the water pipeline and the oil pipeline are all provided with an intermediate container, a pumping device used for generating high pressure liquid flow and an energy storage tank. The experimental method includes the following steps: firstly, oil displacementexperiment is carried out under the condition that no hydraulic power pulse is added; secondly, oil displacement experiment is carried out while frequency and amplitude hydraulic power pulse wave of core are replaced, and meanwhile hydraulic power pulse auxiliary chemical oil displacement experiment is completed; thirdly, data processing is carried out. The invention has reasonable design, mounting convenience, simple operation and good simulation effect, can improve efficiency of oil displacement by water and crude oil recovery ratio, and experiment of hydraulic pulse wave oil displacement and hydraulic pulse wave auxiliary reservoir core oil displacement by water can be realized.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Indoor experiment shaft device and method for synchronous or asynchronous multistage clustering fracturing of two horizontal wells

The invention provides an indoor experiment shaft device for synchronous or asynchronous multistage clustering fracturing of two horizontal wells and a simulation method. The device and simulation method are used for indoor experiment simulation of synchronous or asynchronous multistage clustering fracturing of two shale horizontal wells. A designed multistage clustering fracturing experiment shaft can simulate influences of the number of horizontal well fracturing segments, number of perforation clusters, perforation parameters and the like on synchronous or asynchronous fracturing fracture shapes. The experiment scheme comprises the six steps of making of an experiment scheme, machining of a special experiment shaft, machining of a test piece, preparation of fracturing fluid, an extended experiment of fracturing fractures, and CT scanning of an experiment result. The novel fracturing experiment shaft and method are provided for shale reservoir fracturing research, can simulate the joint network fracturing fracture distribution of a reservoir in multistage clustering synchronous fracturing of two horizontal wells or multistage clustering asynchronous fracturing of two wells front and back, and can provide theoretical support for shale reservoir fracturing experiment research and fracturing construction.
Owner:CHONGQING INST OF GEOLOGY & MINERAL RESOURCES

Li-la-ti-o composite solid electrolyte material containing silicon and synthesizing method thereof

The invention relates to a lithium lanthanum titanate composite solid electrolyte material containing silicon in which amorphous Si or an amorphous Si compound exist in a grain boundary between crystal grains, and a method of producing the same, and belongs to a field of a lithium ion battery. According to the invention, the amorphous Si or the amorphous Si compound exist in the grain boundary between the crystal grains of the lithium lanthanum titanate. The amorphous Si or the amorphous Si compound are introduced into the grain boundary by employing a wet chemical method. In the wet chemical method, the inexpensive organosilicon compound is used as an additive, and the organosilicon compound is added into the lithium lanthanum titanate solid electrolyte material. Thus, it is possible to synthesize the lithium lanthanum titanate composite solid electrolyte material containing silicon by performing sintering when the ratio of mass of the Si or mass of the Si calculated based on mass of the Si compound to mass of the lithium lanthanum titanate is 0.27% to 1.35%. Grain boundary conductivity thereof is significantly improved, and therefore, total conductivity is improved. In addition, processes of the experimental method are simple and easily performed. Also, an experimental period is greatly reduced, a synthesis temperature is reduced, and energy consumption and production cost are reduced.
Owner:TOYOTA JIDOSHA KK +1

Experimental device and method for simulating stratum deformation in NGH (natural gas hydrate) exploiting process

The invention discloses an experimental device for simulating stratum deformation in an NGH (natural gas hydrate) exploiting process. The experimental device comprises a reaction kettle, an axial pressure piston, a kettle outer jacket, an injection system, an axial pressure control system, an ambient pressure control system and an output system. The invention further discloses an experimental method for simulating the stratum deformation in the NGH exploiting process by adopting the experimental device. The method comprises the following steps: in a hydrate generation process, ice powder particles in proper particle size are prepared through an ice powder production system, ice powder is mixed with dried submarine sediment particles, and hydrate samples with different occurrence forms and different saturation degrees can be generated. Axial deformation quantity of a sample cavity as well as gas output, water output and sand output data is calculated in an exploiting experiment. According to the experimental device and the experimental method, the influence of the hydrate samples under various geological conditions and with different occurrence forms on the stratum deformation in a decomposition process can be simulated, basic data of the influence of decomposition of NGH on the stratum deformation are obtained, and the experimental foundation and basis are provided for real NGH exploiting.
Owner:GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI

Single rotor wing unmanned aerial vehicle three-freedom degree semi-physical simulation platform and experimental method

The invention discloses a single rotor wing unmanned aerial vehicle three-freedom degree semi-physical simulation platform and an experimental method. According to the simulation platform, a single rotor wing helicopter is arranged on a universal ball joint on a top end of a three-freedom degree aircraft rotary table; an airborne attitude sensor is arranged at a geometric central part of the single rotor wing helicopter; an airborne assistant controller is arranged in the single rotor wing helicopter; the airborne attitude sensor and the airborne assistant controller are respectively connected with a simulation controller system; and the simulation platform further comprises a displacement variation virtual scene on-line display computer which is connected with the simulation controller system. The method comprises the steps of: according to a simulation task, utilizing modules and controls in an x-PC toolbox to operate Simulink software on a host computer, and building a model block diagram for a simulation system. By utilizing the simulation platform and the experimental method, the high efficiency, practicability and dependability of a single rotor wing helicopter controller design are improved; and experiments can be safely carried out, an unmanned aerial vehicle flight control algorithm can be visually simulated, and the attitude information of the single rotor wing helicopter can also be actually shown.
Owner:TIANJIN UNIV
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