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31results about How to "Test directly" patented technology

Method for obtaining relaxation rate of soil body

The present invention discloses a method for obtaining a relaxation rate of the soil body, and belongs to the technical field of geotechnical engineering. The method for obtaining the relaxation rateof the soil body comprises the following steps: soaking and washing soil particles in distilled water and then performing air-drying to obtain the soil body; preparing the soil body into multiple samples, wherein the water content of multiple samples is different; putting the multiple samples into the nuclear magnetic resonance (NMR) spectrometer, applying a sequence to the multiple samples, and performing inversion on the original NMR data to obtain a pore water nuclear magnetic relaxation time distribution curve of the multiple samples; finding out a peak point value on the nuclear magneticrelaxation time distribution curve, and obtaining the relaxation rate of the corresponding sample according to the peak point value; and according to the relaxation rate of the multiple samples and the water content of the multiple samples, making a relaxation rate-water content graph, finding out a straight line segment in the relaxation rate-water content graph, and finding the average value ofthe relaxation rate of the straight line segment, wherein the average value is the final relaxation rate of the soil sample. According to the method for obtaining the relaxation rate of the soil bodyprovided by the present invention, the relaxation rate of the soil body can be quickly and directly tested, and the testing efficiency is improved.
Owner:INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI

Scanning thermoelectric microscopy device for microimaging of thermoelectric FOM factor behaviors

The invention discloses a scanning thermoelectric microscopy device for microimaging of thermoelectric FOM (Figure of Merit) factor behaviors. The device is used for resolution microimaging of sub-surface thermoelectric FOM factor behaviors of a to-be-tested thermoelectric material sample. The device includes a subsurface thermoelectric signal in situ excitation module used for in situ excitationof subsurface thermoelectric Seebeck current signals of the to-be-tested thermoelectric material sample; a thermoelectric signal in situ detection module used for in situ real time detection of the subsurface thermoelectric Seebeck current signals of the to-be-tested thermoelectric material sample; a thermoelectric signal microimaging module used for high resolution microimaging and displaying ofthe subsurface thermoelectric FOM factor signals. The device provided by the invention has unique functions of in situ excitation and in situ synchronous representation of subsurface thermoelectric signals and has advantages of high resolution rate, high flexibility, high signal to noise ratio, testing directness and the like. The device is simple in structure and high in compatibility, is suitable for combination with different commercial scanning electron microscopes and is a novel technique easy to promote and apply.
Owner:SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI

Fatigue test method for metal diaphragm of diaphragm compressor

The invention discloses a fatigue test method for a metal diaphragm of a diaphragm compressor. The method comprises the following steps of S0, designing the shape of a diaphragm test piece through simulation, enabling the fundamental frequency of the diaphragm test piece to be about 200Hz which is several times of the running frequency of a diaphragm in a compressor, shortening the fatigue test time, and ensuring that the maximum stress appears at a required part at the same time; S1, pressing and fixing the diaphragm test piece on a vibration table in a cantilever form; S2, determining the fundamental frequency of the diaphragm test piece through the maximum deformation of the diaphragm test piece; S3, adjusting the acceleration of the vibration table and enabling the stress of the test sample piece to reach a required test stress value; and S4, when the diaphragm test piece is damaged, obtaining the actual fatigue life of the compressor operation diaphragm through conversion. According to the present invention, the performance of the diaphragm is predicted in advance, the performance can be improved in advance, the development period is shortened, and the development efficiency and reliability are improved; the testing device and the testing steps are simple, and the fatigue life of the diaphragm can be conveniently and directly tested.
Owner:上海羿弓氢能科技有限公司

Plateau continental facies shale gas testing and flowback equipment, gas testing method and flowback method

ActiveCN114278265ARealize the perforation operationPerforating avoidanceFluid removalPipeShale gas
The invention provides a plateau continental facies shale gas testing and flowback device, a gas testing method and a flowback method.The gas testing and flowback device comprises a pipeline, the pipeline comprises a U-shaped inner pipe and an outer pipe arranged outside the inner pipe in a sleeving mode, and the U shape of the inner pipe is opened upwards in the extending direction of a shaft; one end of the inner pipe is a first liquid inlet end, the other end is a second liquid inlet end, and a conical jet hole is formed in the bottom of the inner pipe; an overflowing hole penetrating through the side wall is formed in the outer pipe; a detection assembly is arranged between the outer pipe and the inner pipe and located at the overflowing hole. The first valve is located at the second liquid inlet end and used for controlling opening or closing of the second liquid inlet end; the second valve is located in the jet hole and used for controlling opening or closing of the jet hole; the third valve is located on the pipe wall of the inner pipe and used for controlling communication or disconnection between the interior of the inner pipe and the space between the inner pipe and the outer pipe; and the adapter pipe is communicated with an annular space between the inner pipe and the outer pipe. The plateau continental facies shale gas testing and flowback process can be achieved.
Owner:青海省第四地质勘查院

A Scanning Thermoelectric Microscopy Device for Thermoelectric Figure of Merit Behavioral Microscopic Imaging

The invention discloses a scanning thermoelectric microscopy device for microimaging of thermoelectric FOM (Figure of Merit) factor behaviors. The device is used for resolution microimaging of sub-surface thermoelectric FOM factor behaviors of a to-be-tested thermoelectric material sample. The device includes a subsurface thermoelectric signal in situ excitation module used for in situ excitationof subsurface thermoelectric Seebeck current signals of the to-be-tested thermoelectric material sample; a thermoelectric signal in situ detection module used for in situ real time detection of the subsurface thermoelectric Seebeck current signals of the to-be-tested thermoelectric material sample; a thermoelectric signal microimaging module used for high resolution microimaging and displaying ofthe subsurface thermoelectric FOM factor signals. The device provided by the invention has unique functions of in situ excitation and in situ synchronous representation of subsurface thermoelectric signals and has advantages of high resolution rate, high flexibility, high signal to noise ratio, testing directness and the like. The device is simple in structure and high in compatibility, is suitable for combination with different commercial scanning electron microscopes and is a novel technique easy to promote and apply.
Owner:SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI

Plateau continental shale gas gas test and flowback equipment, gas test method and flowback method

ActiveCN114278265BRealize the perforation operationPerforating avoidanceFluid removalShale gasMechanics
The present application provides a gas test and flowback equipment, a gas test method and a flowback method for plateau continental shale gas, wherein the gas test and flowback equipment includes: a pipeline, and the pipeline includes a U-shaped inner pipe and sleeves inside The outer tube outside the tube, the U-shape of the inner tube opens upward along the extension direction of the wellbore; one end of the inner tube is the first liquid inlet end, the other end is the second liquid inlet end, and the bottom of the inner tube is provided with a conical jet hole; The outer tube is provided with a flow hole through the side wall; a detection component is arranged between the outer tube and the inner tube, and the detection component is located at the flow hole; the first valve, located at the second liquid inlet end, is used to control the second liquid inlet The opening or closing of the end; the second valve, located in the jet hole, is used to control the opening or closing of the jet hole; the third valve, located on the pipe wall of the inner pipe, is used to control the inside of the inner pipe and the inner pipe and the outer pipe. The space is connected or disconnected; the transfer tube is connected with the annular space between the inner tube and the outer tube. The present application can realize the gas test and flowback process of plateau continental shale gas.
Owner:青海省第四地质勘查院

A Device for Microscopic Imaging of Subsurface Nanoscale Failure Behavior

The invention discloses a microimaging for subsurface nanoscale failure behaviors. The microimaging device used for achieving high-resolution microimaging of the subsurface pyroelectric behaviors of ato-be-measured energy storage dielectric material and device comprises a subsurface pyroelectric signal in-situ excitation module, a pyroelectric signal in-situ detection module and a pyroelectric signal microimaging module, wherein subsurface pyroelectric signal in-situ excitation module is used for exciting the subsurface pyroelectric current signals of the to-be-measured energy storage dielectric material and device in an in-situ manner; the pyroelectric signal in-situ detection module is used for performing in-situ real-time detection on the subsurface pyroelectric current signals of theto-be-measured energy storage dielectric material and device; the pyroelectric signal microimaging module is used for performing high-resolution microimaging on the subsurface pyroelectric current signals of the to-be-measured energy storage dielectric material and device according to the detection signals of the pyroelectric signal in-situ detection module and displaying the images. The atomic-force-microscope-based high-resolution microimaging device for the subsurface nanoscale failure behaviors is built by combining an atomic force microscope imaging function, a Joule heating effect, a heat wave effect and a pyroelectric effect.
Owner:SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI

A Method for Acquiring Soil Relaxation Rate

The invention discloses a soil relaxation rate acquisition method, which belongs to the technical field of geotechnical engineering. The method for obtaining the relaxation rate of the soil body comprises the following steps: soak and wash the soil particles in distilled water and then air-dry to obtain the soil body; prepare the soil body into several samples, and the water contents of several samples are all different; Put the sample into the NMR instrument, apply sequences to several samples, invert the original NMR data, and obtain the pore water NMR relaxation time distribution curve of several samples; find the peak point value on the NMR relaxation time distribution curve, The relaxation rate of the corresponding sample is obtained according to the peak point value; according to the relaxation rate of several samples and the water content of several samples, a relaxation rate-water content diagram is made, and found in the relaxation rate-water content diagram The straight line segment, and the average value of the relaxation rate of the straight line segment is calculated, and the average value is the final relaxation rate of the soil sample. The method for obtaining the relaxation rate of the soil body of the invention can quickly and directly test the relaxation rate of the soil body, and improves the testing efficiency.
Owner:INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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