11results about How to "Improve experimental precision" patented technology

The invention relates to a method for observing and quantitatively analyzing microscopic displacement of water-displacing oil, and belongs to the technical field of oilfield development. The method specifically comprises the following steps: preparing a core sample into a visual rock slice assembly; injecting fluid into the visual rock slice assembly to carry out a displacement experiment, recording a video of the distribution condition of the fluid in the slice, intercepting a picture, and establishing fluorescent picture standard samples of the rock slice in different states; oil-bearing areas before and after displacement are analyzed from the pictures; and analyzing the occurrence state of the residual oil. The defects that a glass etching model cannot reflect a real core pore structure and the definition of a recorded displacement video or picture is low are overcome.

The invention discloses a wind tunnel full-model test section washboard structure which comprises a frame, the frame is provided with a fixed wall plate, the frame is provided with a washboard which is attached to the back face of the fixed wall plate to slide, an opening in the washboard is correspondingly matched with an opening in the fixed wall plate, and a washboard adjusting mechanism for adjusting the aperture ratio is arranged between the frame and the washboard. The device has the beneficial effects that continuous or graded adjustment of the aperture ratio is realized through mutual shielding of adjacent holes, the fundamental problem that the fixed aperture ratio cannot adapt to variable working conditions is solved, the experiment precision is remarkably improved, the experiment range is remarkably expanded, the efficiency is greatly improved, and the cost is greatly reduced.

This invention discloses a method for conducting a surface flashover test on insulator test pieces. The test pieces include control test pieces and experimental test pieces, which have identical structures. There are two or more experimental test pieces. The specific steps of the experimental method are as follows: Step a: Immerse each experimental test piece in its respective chemical cleaning agent, with the immersion time gradually increasing for each test piece; Step b: Prepare artificial dirt and apply it to the test pieces. After coating, the salt density and ash density of each test piece are equal; Step c: Use a testing device to obtain and record the flashover voltage and leakage current of each test piece when flashover occurs. Compared with existing technologies, the surface flashover test method for insulator test pieces provided by this invention simplifies operation and provides higher experimental accuracy.

This invention discloses an ultra-high spatiotemporal resolution single-shot measurement system based on warm-dense gold, belonging to the field of pump-probe technology. It includes a femtosecond laser module, a femtosecond pulse compression module, a femtosecond pulse shaping module, a 400nm few-period femtosecond pulse module, a sample module, a probe light module, and an imaging system module. The femtosecond laser module provides a femtosecond laser beam, which is compressed by the femtosecond pulse compression module to generate a few-period femtosecond pulse. After optimization by the femtosecond pulse shaping module, the pulse is split into two beams. One beam is used to generate an ultraviolet-band few-period femtosecond pulse through the 400nm few-period femtosecond pulse module, serving as the pump light. The other beam is used to generate an 800nm ​​few-period femtosecond pulse through the probe light module, serving as the probe light. The sample to be measured is placed inside the sample module, and the pump light and probe light act on the sample module simultaneously. Imaging is achieved through the imaging system module. This invention solves the problem that due to low temporal resolution, the Auger time of electrons in metals is on the order of 10 femtoseconds, making it impossible to effectively detect the initial processes of the formation of warm-dense materials.

The utility model belongs to the technical field of chemical equipment, and discloses an improved chemical small-scale test stirring device. The improved chemical small-scale test stirring device comprises a stirring mechanism and a reaction container, the stirring mechanism is detachably installed on the reaction container, raw materials to be stirred can be contained in the reaction container, and the stirring mechanism can stir the raw materials to be stirred in the reaction container. According to the utility model, through the modularized design, the rapid installation and disassembly can be realized, the operation can be completed by only one person, the disadvantage that the cooperation of multiple persons is needed in the prior art is solved, and the experiment efficiency is greatly improved. Through modular arrangement, all parts in the device can be replaced and cleaned in time, and the influence of residual substances on the device on subsequent experiments is avoided.

The present application belongs to the field of geothermal energy exploitation and irrigation, and discloses a geothermal exploitation and irrigation indoor simulation experiment method and device. The method comprises the following steps: loading a core sample into a core holder; placing the core holder in a container with a constant temperature water bath environment and keeping the core sample above the water surface; covering the core sample with sand; injecting water from the first end of the core holder and controlling the flow rate of the injected water; collecting the injection pressure of the first end of the core holder and the production temperature of the outflowing water at the second end; and analyzing the injection and production temperature variation based on the flow rate and pressure of the water injected at the first end and the temperature of the outflowing water at the second end. The method and device of the present application simulate the thermal reservoir by combining a constant temperature water bath with a sand bath, which can better simulate the actual situation of the reservoir and provide support for the development and utilization of oilfield hydrothermal geothermal energy.

A kind of ion thinning device loading table convenient to replace, it is characterized by including loading bearing table device, connecting block, connecting groove, sterilization device, sample positioning device, detachable loading table device, the connecting block is installed on the side of loading bearing table device, connecting groove is set up on the connecting block, loading bearing table device is connected with connecting block by bolt nut, multiple sterilization devices are installed on loading bearing table device, loading bearing table device is connected with sterilization device by hinge hinge, detachable loading table device is installed on loading bearing table device, sample positioning device is installed on detachable loading table device.

The present application relates to a kind of simulation monitoring devices and methods of frozen soil change process.The simulation monitoring device includes thermostat, thermostat is built in image acquisition device and oppositely arranged light source, object table and the frozen soil structure simulation device and temperature control device of setting on object table are set in thermostat, and image processing device is set outside thermostat.The frozen soil structure simulation device is simulated by setting multiple convex parts and setting coating layer on convex part, for simulating soil pore structure characteristics, constructs high simulation nature soil simulation environment, highly restores the pore characteristics of natural soil under freeze-thaw environment and the migration environment of soil pollutant.The simulation monitoring method realizes the simulation and monitoring of the migration behavior of microplastic particles in soil, has excellent simulation and very high experimental precision, and has important significance to the evaluation and management of the environmental problems of widely distributed cold region pollution site.

The utility model belongs to bridge engineering experimental equipment technical field especially relates to a mud and stone flow impact pier simulation device, it includes water tank, angle adjusting device, mud and stone flow simulation device, pier module and data acquisition system, water tank includes inclined section and horizontal section, mud and stone flow simulation device installs on the inclined section, pier module installs on the horizontal section and pier module, the utility model discloses can adjust water tank angle, mud and stone flow impact force, flow rate and flow mode simultaneously, simulate the mud and stone flow flow path under different topographic conditions, control the flow rate, grain size distribution and impact force of mud and stone flow, adapt to a variety of experimental needs, and pier module adopts modular design, has the advantage that can quickly replace different shape pier model, be convenient for the study different shape pier's anti -impact performance, be applicable to mountainous area bridge engineering design, geological disaster prevention and control research and teaching experiment, can provide scientific experimental basis for pier anti -impact performance optimization and disaster prevention and mitigation strategy.

This invention relates to a simulation analysis method for emergency evacuation of blended wing-body (BWB) passenger aircraft, comprising: constructing a sudden accident scenario and risk evolution model for the passenger aircraft; determining the emergency evacuation simulation experimental conditions; and building a simulation environment. A three-dimensional model of the BWB passenger aircraft is established and imported into Anylogic simulation software to construct a realistic emergency evacuation module for BWB aircraft personnel, and a personnel emergency evacuation behavior model is established using the simulation software. Based on the simulation environment, the realistic emergency evacuation module, and the personnel emergency evacuation behavior model, a simulation of emergency evacuation of BWB aircraft personnel is conducted to obtain the risk factors and weaknesses existing in the emergency evacuation process. This invention provides a convenient, fast, low-investment, and highly feasible method for verifying and analyzing the relevant layout design of future new BWB passenger aircraft, providing data support for the design of this type of aircraft.