29results about How to "Improve experimental precision" patented technology

The invention discloses an oil well working condition fault early warning method and system, and relates to the technical field of oil well control. According to the technical key points, the method comprises the following steps: firstly, extracting a 10-dimensional feature vector of oil well production data, and identifying an oil well which may have a fault through a fault early warning model based on improved fuzzy C-means clustering by using the 10-dimensional feature vector, according to the improved fuzzy C-means clustering algorithm, by purposefully selecting an initial clustering center and improving a target function, the defect that an FCM clustering algorithm is prone to falling into local optimum is overcome, and meanwhile the separation between the clustering centers is ensured; furthermore, a global search method-firefly algorithm is added on the basis, a calculation method of the clustering center is optimized, and a global optimal solution can be effectively found. The oil well fault can be timely and accurately found and treated in time, manual inspection is not needed, the working efficiency is improved, and management and supervision are facilitated.

The invention discloses similar test block forming equipment for a roadway similar simulation experiment and a manufacturing method. The similar test block forming equipment comprises a lower forming die, and an upper pressurizing die for pressurizing and forming a similar material in the lower die at a constant pressure is arranged above the lower forming die; and the pressurizing upper die is connected with a pressurizing control device for setting a critical pressure value during pressurizing according to mechanical parameters of the standard test block and setting a critical position to control the pressurizing upper die to move and pressurize. According to the forming equipment, similar materials are pressed and formed into required similar test blocks through the pressurizing upper die capable of providing constant pressure, so that the large mechanical property difference of the similar test blocks caused by inconsistent manual tamping mode and tamping force in the similar test block manufacturing process is avoided; therefore, the reliability and the accuracy of the experimental result of the similar simulation experiment are improved.

The invention discloses a multi-channel small animal inhalation anesthesia induction box, and relates to the field of anesthetics animal research. In the prior art, a test cavity of a transparent induction box is divided into a plurality of experiment cavities by partition plates, and adjacent experiment cavities are communicated, so that only a single-concentration anesthesia experiment can be carried out. The invention provides a multi-channel small animal inhalation anesthesia induction box. An anesthesia induction area, an adjuster and an experiment area are arranged in an induction box main body. In the anesthesia induction area, the size of an anesthesia box is controlled through a curved induction channel, an adjuster and an anesthesia injection cavity, use of anesthetic gas is reduced, the concentration of the anesthetic gas is monitored and adjusted in real time through an anesthetic gas adjusting and monitoring assembly and a waste gas treatment mechanism, meanwhile, waste gas obtained after an experiment is subjected to harmless treatment, and the environment is protected. The safety performance of the experimental device is improved, and the experimental result is more intuitive and accurate through real-time experimental data comparison of a plurality of same experimental devices in the experimental area.

A turbine temperature distribution prediction method based on deep learning is used for evolution prediction of gas turbine transient experiment solid domain temperature distribution along with time, and comprises the following steps: constructing a turbine cascade experiment geometric model, generating a turbine cascade calculation grid, and processing according to the turbine cascade geometric model to obtain a turbine cascade test piece; the method comprises the following steps: constructing a gas turbine transient experiment device, determining transient experiment working conditions and boundary conditions of a turbine cascade, and constructing a recurrent neural network coded by a transient heat conduction equation; a gas turbine transient experiment is carried out, main flow inlet total temperature time sequence data, turbine blade grid test piece surface temperature time sequence data and material thermophysical parameters of a turbine blade grid test piece are collected to form experiment data, the recurrent neural network is trained, and inversion of experiment working conditions is completed; and utilizing the trained recurrent neural network to predict the temperature distribution in the whole stable operation stage of the solid domain of the turbine cascade. The transient experiment time can be shortened, and the transient experiment cost can be remarkably reduced.

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 provides a hydrocarbon generation simulation experimental instrument and a gas-liquid collection method and a cleaning method thereof. A gas-liquid separation tank, a telescopic pipe assembly, an evacuation protection valve, a bidirectional vacuum pump, a gas collecting bottle and a gas injection valve are connected in series along a main pipeline. A evacuation branch pipe is branched from the main pipeline between the evacuation protection valve and the bidirectional vacuum pump. The evacuation valve is connected in series to the evacuation branch pipe. A connecting pipe is connected between the gas collecting bottle and the main pipeline. A gas collecting pressure meter, a gas collecting valve and an automatic gas meter are connected in series to the connecting pipe. The gas collecting bottle is connected to a gas collecting bag soft tank through the gas collecting valve. A solvent branch pipe is also branched from the main pipeline between the bidirectional vacuum pump and the gas injection valve. A solvent valve is connected in series to the solvent branch pipe. A solvent flushing valve is connected in series to a branch pipe one at the end of the solvent branch pipe. The end of the branch pipe one is connected to a solvent collecting cold trap. A solvent injection valve is connected in series to a branch pipe two at the end of the solvent branch pipe. The end of the branch pipe two is connected to a solvent collecting tank. A heating resistor is arranged in the solvent collecting tank. A solvent recovery valve is connected between the solvent collecting tank and the solvent collecting cold trap.

In the platform, a submarine cable penetrates through an impounding reservoir, a lifting support is arranged in the impounding reservoir and supports the submarine cable in a lifting mode to form a local suspension section, and a flow generation system is arranged in the impounding reservoir to generate uniform flow and oscillatory flow towards the local suspension section. The first temperature probe measures the first temperature of a submarine cable insulating layer of the local suspension section, the second temperature probe measures the second temperature of a conductor of the local suspension section, the fiber grating sensor measures strain parameters of the local suspension section during oscillation in water, and the ultrasonic flow meter is arranged in the reservoir to measure the flow velocity. The feed-through transformer is arranged around the submarine cable outside the reservoir so as to conduct current to the submarine cable through electromagnetic induction, and the lightning surge generator is connected with the submarine cable outside the reservoir so as to generate overvoltage on a submarine cable conductor. The oscilloscope is connected with the submarine cable outside the reservoir to monitor the waveform of the overvoltage and the voltage waveform sensed by the shielding layer of the submarine cable.

The invention belongs to the field of thermal conductivity and thermal diffusion coefficient measurement, and particularly relates to a high-temperature and high-pressure thermal conductivity thermal diffusion coefficient measurement device based on a double-line transient plane heat source method, which comprises a sample, a thermocouple, a plane heat source heating wire, a heat insulation pipe, heat conduction metal columns, a heater and a pressure transmission medium, the surface of the sample and the surface of the heat conduction metal column are wrapped with a heat insulation pipe, the center of the pressure transmitting medium is provided with a hole-shaped sample bin, the heat insulation pipe is arranged in the hole-shaped sample bin, the heater is located between the heat insulation pipe and the pressure transmitting medium, and the sample comprises a first sample piece, a second sample piece and a third sample piece which are stacked from top to bottom. The thermocouple is horizontally arranged between the first sample piece and the second sample piece, and the plane heat source heating wire is arranged between the second sample piece and the third sample piece. Measurement errors and system errors can be reduced, and the experiment success rate is increased.

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.

The present application provides an experimental device for producing a dripping flame and an experimental method for studying the ignition of a dripping fire, the experimental device comprising: a frame; a melting pot for placing the material to be tested; a heating device for melting the material to be tested into a molten state; a dripping tube for causing the molten material to be tested to drip to form molten droplets; a power device for controlling the dripping of a single molten droplet; an ignition device for igniting the molten droplets to form a dripping fire; a sample placement device for adjusting the relative position of the sample to be ignited and the dripping fire; and a data acquisition device for collecting ignition data. Through the cooperation of the heating device, the power device and the sample placement device, important physical parameters such as the mass of the molten droplets formed by the material to be tested, the dripping frequency, the combustion state and the dripping distance can be controlled, and the ignition data of the dripping fire can be collected through the ignition device and the data acquisition device, providing a reliable experimental scheme for exploring the ignition mechanism of the dripping fire.

The invention belongs to the technical field of polypeptide cracking, and discloses a polypeptide cracking system which comprises a 50L cylindrical cone type cracking reaction kettle, a 500L settling kettle, a 100L drying kettle, an alarm recording module, a user management module, a system information module and a logout module. And the 500L sedimentation kettle is a vertical container made of 316L outer material and 316L inner material coated with PFA (Polyfluoroalkoxy) stainless steel. According to the invention, the splitting work of a large amount of polypeptide can be completed in a short time, the experiment efficiency is obviously improved, the advanced computer control system is adopted, the rapid and accurate splitting of the polypeptide can be realized, the manual operation is reduced, the experiment precision and efficiency are improved, and the high-purity splitting product can be generated by the polypeptide splitting system by accurately controlling the splitting condition; the workload of subsequent purification and separation is reduced, the polypeptide cracking system has good repeatability, the stability and consistency of each experiment result can be ensured, and the reliability and accuracy of the experiment are improved.

The utility model discloses a sealing film scraping plate for a 96-well plate. The sealing film scraping plate comprises a base, the scraping plate is arranged on the base; a film scraping table is arranged on one side, far away from the base, of the scraping plate; the scraping plate is provided with a protruding block which is used for increasing friction force between fingers and the scraping plate. According to the film sealing scraping plate for the 96-well plate, pollution between the scraping plate and an experiment table top is avoided, the experiment stability and the experiment precision are improved, and the film sealing difficulty caused by insufficient light is reduced.

The invention relates to the field of material science and fracture mechanics, in particular to a technical method for characterizing a fracture microstructure. Specifically, the invention provides a characterization method for directly obtaining fracture cleavage plane orientation by using an EBSD technology, and the characterization method can be used for orientation analysis of a smooth cleavage plane or a quasi-cleavage plane on a fracture of a tensile, fatigue or impact sample. According to the method, direct characterization of a cleavage plane is realized through combination of an EBSD (electron back scattering diffraction) technology and a fracture three-dimensional orientation characterization method, so that the characterization precision of microscopic features of the fracture plane is improved, the characterization cost is greatly reduced, and visual characterization of space orientation information of the facet is realized by utilizing crystallographic calculation.

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.

The invention relates to a device for quickly testing cement dosage on site, belonging to the technical field of cement testing, comprising a mixer and a measuring device, wherein the mixer comprises an upper tube and a lower tube, wherein the upper tube and the lower tube are detachably connected, wherein the upper tube and the measuring device are detachably connected, wherein a through hole is arranged on a side of the upper tube close to the lower tube, wherein the upper tube and the lower tube are connected through the through hole after being connected, wherein a valve is arranged at the through hole; wherein a push column is arranged on a side of the lower tube away from the upper tube, wherein a side wall of the push column is fitted and slidably connected with an inner wall of the lower tube; wherein the measuring device is a tubular structure with one end blocked, wherein a accommodating test tube is arranged inside the measuring device, wherein an opening is arranged on the accommodating test tube close to an opening end of the measuring device, wherein the opening of the accommodating test tube is arranged opposite to the through hole, wherein the accommodating test tube is used for containing EDTA reagent, wherein scale lines are arranged on the side walls of the accommodating test tube, the upper tube and the lower tube; and wherein the device is highly convenient to use.

The utility model provides a cold and hot sample stage device for fluorescent particle tracking experiment relates to experimental device technical field. It includes casing, temperature regulation unit, sample stage and crucible unit, the inside formation operation cavity of casing and the bottom of casing is opened through to have operation opening, temperature regulation unit is connected with casing, one end of sample stage is connected with temperature regulation unit and mutually contacts, the other end of sample stage is placed in operation opening and is opened through to have the accommodation groove, the crucible unit can be placed in the accommodation groove or is taken out from the accommodation groove, and sample can be stored in the inside of crucible unit. Casing can form certain sealing effect, and through with sample storage in the inside of crucible unit, the whole device is relatively sealed, will not be affected by environmental thermal disturbance, and the sample will not be directly exposed to the laboratory environment, at the same time, the crucible unit is easy to place and take out, thereby when loading and changing sample has more simple and efficient effect.

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 utility model discloses an isochronous circle demonstration instrument which comprises a base, one side of the base is fixedly connected with a support, one end of the top end of the support is provided with a through hole, a hanging rope penetrates through the through hole, the bottom end of the hanging rope is provided with a circular frame in a hanging mode, the top end of the circular frame is provided with a first hole, the bottom end of the circular frame is provided with a second hole, and one side of the circular frame is provided with a third hole. A third hole is formed in one side of the circular frame, a fourth hole is formed in the other side of the circular frame, a fifth hole is formed in the position, below the third hole, of one side of the circular frame, and a sixth hole is formed in the position, below the fourth hole, of the other side of the circular frame. The time for the small balls to slide from the highest point of the vertical circular ring to the circumference along different smooth chord tracks from a static state is equal, the time for the small balls to slide from different points of the vertical circular ring to the lowest point of the circumference along the smooth chord tracks from the static state is equal, and students can be helped to break through major and difficult points through obvious and visual demonstration experiments in teaching. And the understanding of knowledge is deepened.

The present application belongs to the field of biological experimental technology, and specifically relates to a brain stereotaxic combined with continuous gas anesthesia drug delivery system and a brain stereotaxic anesthesia depth quantitative adjustment method. A brain stereotaxic combined with continuous gas anesthesia drug delivery system, characterized in that it includes a first ear bar, a second ear bar, an anesthesia headgear and a gas delivery device; the anesthesia headgear is used to deliver anesthetic gas and / or oxygen to the experimental model and assist the first ear bar and the second ear bar to complete the fixation of the experimental model. The present application improves the structure and function of the original brain stereotaxic instrument, making it an animal brain stereotaxic instrument that can fix rats and give continuous gas anesthesia, avoiding experimental errors and accidental deaths caused by too shallow or too deep anesthesia depth of animals during the experiment, and has technical effects such as more stable model state, higher experimental accuracy, and experimental results closer to the actual situation.

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 invention discloses a red blood cell refrigeration house optimization design method, and relates to the technical field of refrigeration equipment, and the method comprises the steps: setting constraint conditions of each factor of a red blood cell refrigeration house, each factor comprising the specific surface area of the red blood cell refrigeration house, the variable cross-section height, the air cooler position, the internal heat source position, the air cooler air supply temperature and the air supply speed; based on the level number of each factor, acquiring a factor level table, and designing an orthogonal experiment working condition; thermal performance evaluation indexes under different working conditions are calculated, and orthogonal simulation results under different working conditions are obtained; based on the orthogonal simulation result, performing range analysis on the thermal performance evaluation index under the orthogonal experiment working condition to obtain an orthogonal experiment calculation result; and an orthogonal experiment calculation result is analyzed to obtain an optimal combination working condition of each factor, so that unnecessary energy loss is reduced, temperature uniformity and velocity field distribution are optimized, and the stability of a storage environment is ensured.

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.

The invention discloses a simulation experiment device in asphalt aging process, comprising a temperature-controlled aging box and an aging simulation device arranged in the temperature-controlled aging box, wherein an upper chamber and a lower chamber are arranged in the temperature-controlled aging box, a power chamber and water storage chambers located on the left and right sides of the power chamber are respectively arranged in the lower chamber, a sample tray of transparent material is horizontally rotatably connected in the upper chamber, a sample to be tested is arranged in the sample tray, an optical fiber sensor is horizontally arranged above the inside of the sample to be tested, a right fixed plate and a left fixed plate of "L"-shaped structure are respectively fixed to the outer walls of the left and right sides of the sample to be tested, a rolling mechanism is arranged between the two right fixed plates and the left fixed plates, and the aging simulation device comprises a sunshine device, a temperature control device and a spray device, and the sunshine device and the spray device of the invention can be used alternately through the cooperation of a lifting rod and a connecting rod; the invention is suitable for simulating the damage to asphalt pavement under the combined action of ultraviolet radiation, large temperature difference between day and night and load in high-altitude and cold areas.

The monkey animal operation platform comprises a bed body, the end face of the bed body is divided into a monkey head area and a monkey body area, and a head groove for containing the head of an external experiment monkey is formed in the position, corresponding to the monkey head area, of the bed body; a body groove for containing the body of an external experimental monkey is formed in the position, corresponding to the monkey body area, of the bed body, a head fixing piece for fixing the head of the experimental monkey is arranged in the head groove, and a body fixing piece for fixing the body of the experimental monkey is arranged in the body groove. The bed body is provided with a lifting assembly used for achieving overall lifting or single-side inclined lifting of the hericium erinaceus area or overall lifting of the bed body. The monkey fixing device solves the problems that when traditional monkey experimental animals are experimented, monkey bodies and heads are difficult to fix, and the monkey bodies and the heads are difficult to fix by adapting to different experimental monkey bodies and head sizes.

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.