46results about How to "Meet different experimental requirements" patented technology

The invention discloses an artificial sandstone core used in the indoor physical simulation experiment, and belongs to the technical field of oil-gas field development simulation. The artificial sandstone core is prepared from the following raw materials by weight percent: 2-20% of clay, 5-25% of cement, 0-10% of feldspar (not containing 0) and 70-95% of quartz sand. The pore throat structure distribution curve of the core is adjustable, the wettability is adjustable, the pore throat distribution range is wider and capable of representing double-peak distribution, and the pore throat structure is more complex. The substance component in the stratum natural rock is generated through the silicate mixture in the cement and the subsequent treatment so that the component of the artificial sandstone is diverse, the defects that the artificial core pore throat distribution and wettability are much different from those of the natural core are effectively overcome, the natural core can be more accurately and really simulated, the artificial sandstone core is simple in structure and stable in performance and suitable for replacing natural core in the physical simulation.

The invention relates to a device for measuring the saline concentration in saturated soil solution. The present invention is characterized in that the invention comprises a sealed soil bin, and the soil bin is filled with soil; a constant water tank is respectively arranged on the both sides of the soil bin, and a copper wire gauze and a sieve tray are arranged in the two constant water tank near to one side of the soil in sequence; a constant head water tank for controlling the differential pressure is respectively arranged above the two constant water tanks, the constant head water tank on the water inlet side is connected with a pure water storage barrel and a saline solution storage barrel in parallel through a constant flow pump and a reversing valve; a plurality of salinity sensors are embedded in the soil, a plurality of salinity sensors are connected on a plurality of saline concentration data collectors outside the soil by group; a data processor is connected with the data collector, and the data processor is connected with a computer. The operation of the invention is agility, precise dynamic monitoring can be performed for the salinity in the saturated soil solution, and the invention has wider application prospect.

The invention discloses an artificial conglomerate core which is used an indoor physical simulation experiment, and belongs to the technical field of oil-gas field development physical simulation. The artificial conglomerate core is mainly prepared from the following raw materials in percentage by weight: 2-15% of clay, 5-25% of cementing matter, 20-50% of river sand and 30-60% of quartz sand. The artificial conglomerate core has the advantages that the source problem of the conglomerate core in physical simulation is solved, the obtained artificial conglomerate core is stable in structure, complicated in pore throat structure and diverse in core components, has the characteristics of simple structure and stable property and can replace natural core to be used in physical simulation, and the shortcomings that the pore throat disposition, wetting property and the like of the synthetic core have great difference from those of the natural core are effectively overcome.

The invention discloses an experiment loading system and method for researching interaction of explosion stress waves and moving cracks. A drop hammer freely falls and hits an impact head, and the impact head applies impact loads on a test piece, so that the test piece is subjected to crack initiation to generate moving cracks; an electric signal is generated when the drop hammer makes contact with the impact head, the electric signal is transmitted to an automatic tracking synchronous machine through a signal line, and the automatic tracking synchronous machine sends out triggering signals to a multi-channel pulse igniter; the interval between the time when the automatic tracking synchronous machine receives the electric signal and the time when the automatic tracking synchronous machine sends out the triggering signals can be set in advance; the multi-channel pulse igniter discharges immediately after receiving the triggering signals, discharging is performed at the tip of an initiation probe connected with an initiation line to ignite explosive in an explosive bag, and explosion stress waves are generated; the experiment loading system ignites one or more explosive bags at different periods of moving crack expansion, the explosion time interval of multiple explosive bags can also be set artificially, and different experiment requirements can be met.

The invention provides a small modularized resistance-capacitance divider comprising an equalizing ring 1, a modularized resistor 2, a modularized distributed capacitive post 3, a modularized low voltage measurement system 4 and a base 5. The equalizing ring 1, the modularized resistor 2, the modularized distributed capacitive post 3, the modularized low voltage measurement system 4 and the base 5 are connected in turn. The modularized distributed capacitive post 3 is packaged in an organic glass shell 3-2. The modularized distributed capacitive post 3 is composed of multiple high voltage capacitors 3-1 through series connection, and the upper and lower ends 3-3 and 3-4 are metal covers. The modularized low voltage measurement system 4 is installed on the metal base 5. According to the small modularized resistance-capacitance divider, a modularized structure is adopted so that the divider is enabled to be simplified in structure and reduced in size and convenient for disassembling, adjustment and replacement of single modules, the measurement range of the divider is enabled to be easy to change to meet different experimental requirements, and disassembling, repair and maintenance are facilitated when faults occur.

A three-dimensional dynamic load loading large-sized similar material simulation platform includes a flexible force transmission rubber, a box body and a simulation platform; a displacement sensor is arranged between a guide rail and a top cover plate, and a front cover plate, side covers, a rear cover, the top cover plate, hydraulic cylinders, the guide rail, the displacement sensor and a pressure sensor form a cover plate loading device; and the flexible force transmission rubber is arranged at the inner side of the front cover plate, the side cover plates, the rear cover plate and the top cover plate. The three-dimensional dynamic load loading large-sized similar material simulation platform is provided with the flexible force transmission rubber, the flexible force transmission rubber has the characteristics of flexibility, changeability, and incompressible size, a water injection tube is arranged on the side surface of the box body, and is used for introducing a filling material to the goaf and flooding water to a simulated rock stratum after the coal seam is exploited, and high pressure gas is added to a simulated coal seam to stimulate gas in order to meet different experiment requirements.

The invention discloses an electromagnetically controlled soil sample compactor, comprising a mechanical part and an electric control part. The electromagnetically controlled soil sample compactor is characterized in that the mechanical part includes a frame (2) provided with an upright column on the two sides, a base plate (9) and a beam; each of the two sides of the frame (2) is fixed with a pneumatic cylinder (5) with an electromagnetic reversing valve (11); a U-shaped lifting frame (4) is fixed on the pneumatic cylinders (5) and is vertically provided with a through hole in which a guide rod (3) is formed; a buffer plate (23) is fixed at the bottom of the guide rod (3); an electromagnet component (6) is fixed in the middle of the bottom of the U-shaped lifting frame (4); and an impacting block (7) is mounted on the guide rod (3). The electromagnetic component (6) is electrified to attract the impacting block (7), and meanwhile, the pneumatic cylinder (5) drives the impacting block to ascend to reach the preset height, then the magnet is disconnected, the impacting block (7) falls to impact the buffer plate (23) to complete once compaction for the soil sample in a soil box (10), and continuous impaction and compaction is implemented by repeating the procedure.

The invention discloses a multi-path grating ruler signal acquiring and measuring system. The multi-path grating ruler signal acquiring and measuring system comprises a plurality of grating rulers, multiple paths of grating signal acquiring and measuring devices and a computer data acquiring and processing system, wherein the grating rulers are connected with aviation sockets of the multiple paths of grating signal acquiring and measuring devices by grating ruler signal wires; the multiple paths of grating signal acquiring and measuring devices are connected with the computer data acquiring and processing system by signal output connecting wires and high-speed connecting serial ports. According to the multi-path grating ruler signal acquiring and measuring system disclosed by the invention, the grating rulers with different resolutions and ranges can be connected by only setting in the computer data acquiring and processing system; an ARM high-speed processing module is adopted, the system is controlled by a computer, the measuring precision can reach 0.1 micron and the operation is simple; a plurality of acquiring and measuring devices are in series connected by the serial ports and are connected by virtue of one computer by setting the case number of each acquiring and measuring device; each acquiring and measuring device is provided with an aviation socket, so that the aviation sockets of the grating ruler data wires can be conveniently inserted to the acquiring and measuring devices.

The invention discloses SNP markers closely linked with a height trait of cabbage type rape, and application of the SNP markers. By using an EMS induced mutation technology, a dwarf mutant DF09 with the plant height being 65 cm is obtained. The dwarf mutant DF09 is taken as a research material, a method of map-based cloning is adopted, and a dwarf trait control locus BnDwf.C9 is subjected to finemapping in the 132 Kb interval of a C09 chromosome. In the fine mapping interval, three SNP molecule markers of BnaC09-42, BnaC09-46 and BnaC09-54 which are closely linked with a dwarf trait are obtained. According to the SNP markers closely linked with the height trait of the cabbage type rape, and application of the SNP markers, through a five primer amplification blocked mutation system technology (the BnaC09-42, the BnaC09-46 and the BnaC09-54) or a conventional PCR amplification technology (BnaC09-46pcr), a dwarf material can be accurately screened according to gene types, thus the dwarfmaterial is applied to molecular identification of early target traits, the progress of dwarf breeding is accelerated, and a foundation is laid for clone of dwarf genes.

The present invention discloses a system and method used for researching an explosive stress wave interaction mechanism. The system is characterized in that a time-delay controller is utilized to send out trigger signals to control a multi-channel pulse igniter, the multi-channel pulse igniter ignites the explosives in explosive charges after receiving the trigger signals, and the explosive explosion generates the explosive stress waves to act on a tested member; the time-delay controller sends out at least two trigger signals simultaneously or orderly to control the multi-channel pulse igniter to ignite the plurality of explosive charges simultaneously or orderly, so that the different explosive stress waves are generated in the tested member simultaneously or orderly; after receiving the trigger signals, the multi-channel pulse igniter discharges immediately at the tip of an igniting probe connected with a signal line to ignite the explosives in the explosive charges to thereby generate the explosive stress waves. The positions of the explosive charges and the explosive quantity can be changed to thereby change the intensities of the explosive stress waves and the superposition situation among different stress waves, so that an experiment loading system has a great flexibility, and can satisfy different experiment requirements.

The invention relates to a high temperature and high pressure resistant visual reaction experiment apparatus. The apparatus comprises a quartz glass tube, quartz glass plugs, polytetrafluoroethylene sealing rings, stainless steel clamping plates, stainless steel rods respectively having two threaded ends, nuts and gaskets, a sample rack, and an infrared thermal imager. Screw and nut devices are used to apply pressure to the quartz glass cover plugs, the quartz glass tubes and the polytetrafluoroethylene sealing rings in order to seal the quartz glass tubes; and the above heating device is used to heat the apparatus in order to simulate high temperature and high pressure environment, and the infrared thermal imager is used to monitor the reaction process in real time. The positions of the threaded stainless steel rods on the stainless steel clamping plates in the apparatus can be adjusted, so the apparatus can be equipped with the quartz glass tubes with different diameters, wall thicknesses and lengths to meet different experiment requirements; a sample can suspend on the sample rack or is clamped by a clamp as required; and the apparatus has the advantages of low cost, and simple manufacturing and operation. The apparatus is suitable for researching corrosion and immersion of metal materials with various dimensions in a non-strong alkaline solution at a high temperature under a high pressure, and relevant experiments.

The invention relates to a method for extracting genome DNA (deoxyribonucleic acid) from peanuts, comprising the following steps of: (1) grounding peanut leaves into powder; (2) adding solution A and RNA (ribonucleic acid) enzyme with the final concentration of 1mg / ml; (3) carrying out centrifugal separation after Kac is added; and (4) taking the supernatant obtained in the step 3), adding to isopropanol, carrying out centrifugal separation or picking out flocculent materials, rinsing the flocculent materials by using ethanol with the volume concentration of 75%, drying, and dissolving the obtained precipitate by using sterile ddH2O, wherein in the above steps, the solution A is prepared by evenly mixing 1 Mtris-HCl, 0.5 MEDTA, 5 MnaCl, SDS with the mass concentration of 20%, and H2O according to the volume ratio of 1:1:1:1:6, and adding beta-mercaptoethanol and the RNA enzyme with the final concentration of 40 to 50mg / l according to the ratio of 2% of mixed solution volume. The method provided by the invention is safe, rapid and efficient, and therefore, the method provided by the invention can satisfy different experiment requirements.

The invention discloses a fatigue machine equipped with a transmission rotating arm. The fatigue machine comprises a supporting frame, a metal guiding frame, an omni-directional transmission disc and acoustic emission probes, wherein the metal guiding frame is horizontally placed on the supporting frame; a rotating disc is mounted at the bottom of the metal guiding frame; the omni-directional transmission disc is arranged at the top of the metal guiding frame; a driving rod and a connecting rod are mounted on the metal guiding frame through a connecting block; the other end of the driving rod is connected to the rotating disc; the other end of the connecting rod extends upwards and is connected with a transmission rod and an actuating arm, namely the transmission rotating arm, in sequence; the actuating arm is connected with a test piece through a connecting plate; the test piece is fixed at the top end of the supporting frame; a control and display system is also mounted on the supporting frame; the connecting plate is equipped with the acoustic emission probes; the rotating disc is driven by a driving machine. The fatigue machine is relatively low in cost, complete in function, and relatively high in precision.

The invention discloses a simulation device for solidification of molten steel in a continuous casting crystallizer under the function of electric pulses. By simulating application of the electric pulses in the solidification process of the molten steel in the continuous casting crystallizer, measuring and calculating surface temperature and heat flow change curves of the crystallizer under different electric pulse conditions, obtaining solidification blank shells and slag films under different conditions and studying influences of different electric pulse conditions on the heat transfer behavior between the molten steel and the crystallizer, the blank solidification structure, the blank shell form and the like, the study of the solidification behavior of the molten steel in the continuouscasting crystallizer under the function of the electric pulses is realized, so that the electric pulse conditions are further optimized, and the continuous casting process is conducted smoothly and effectively. The operation is simple, experiment cost is low, and the simulation device is an ideal simulation and study device for the solidification behavior of the molten steel in the continuous casting crystallizer under the function of the electric pulses in a laboratory. The simulation device has the advantages of being simple, convenient and controllable in experiment operation, short in flow, high in efficiency, low in experiment cost, and the like.

The invention discloses a multifunctional ion gun which comprises an ionization chamber, a first lens, a second lens, a first deflecting plate, a second deflecting plate, a slot, a four-way flange, a transition flange and a cone-shaped cylinder. The ionization chamber, the first lens and first deflecting plate are placed in a pipeline of the four-way flange. The first lens is placed between the ionization chamber and the first deflecting plate. The first deflecting plate is placed at the near end of the transition flange. The ionization chamber is arranged at the far end of the transition flange. The second lens, the second deflecting plate and the slot are placed in the cone-shaped cylinder. The second deflecting plate is placed between the second lens and the slot. The second lens is arranged at the near end of the transition flange. The slot is formed in the far end of the transition flange. The four-way flange and the cone-shaped cylinder are connected through the transition flange. The purposes that the structure is compact, functions are various, performance is stable, and ion beam transmission distance is enhanced are achieved.

The invention discloses an airtight pulverizer and application thereof. The pulverizer comprises a sample smashing tank and a non-contact type torque transmission system. The non-contact type torque transmission system comprises a motor, a magnetic rotation shaft and a magnetic transmission coupler. The motor is connected with the magnetic rotation shaft and drives the magnetic rotation shaft to rotate through the magnetic transmission coupler. A shell is arranged outside the magnetic rotation shaft. The lower end of the magnetic rotation shaft extends out of the bottom of the shell and extends into the sample smashing tank. A stirring piece is arranged in the sample smashing tank. The magnetic rotation shaft is connected with the stirring piece and drives the stirring piece to act. The sample smashing tank is connected with the shell of the magnetic rotation shaft in a sealed mode. According to the pulverizer, through the magnetic transmission technology, the external torque transmission efficiency is kept, good sealing, enough power, high efficiency and good effects are achieved when a sample is smashed, operation is easy and convenient, and the airtight pulverizer is suitable for practical use. The gas content of a rock sample can be measured through the pulverizer.

The invention relates to an impact vibration test device of top coal gangue and application of the test device. The test device comprises a pedestal, and a shake table device, a support assembly, a coal releasing device and a high speed camera assembly arranged on the pedestal, the shake table device is arranged in the bottom of the support assembly, the coal releasing device is arranged on the support assembly and positioned over the shake table device, and the high-speed camera assembly is positioned in one side of the support assembly and arranged in parallel with the shake table device. Coal gangue particles are placed in the coal releasing device, the coal releasing device releases the coal gangue particles, the coal gangue particles fall on the shake table device successively, the high speed camera assembly obtains an instant image when the coal gangue falls on the shake table device, and a sample of the falling coal gangue and different parameters of the shake table device afterfalling are obtained to implement subsequent data analysis. The test device is ingenious in structural design and less influenced by the external environment, the test feasibility is high, labor is not needed, a test process is accurate with little error, and the popularization value is very high.

The invention discloses an experiment loading system and method for researching the movement crack interaction mechanism.A time-prolonging controller is utilized to send out trigger signals to control a multi-channel pulse ignitor, the multi-channel pulse ignitor detonates explosive in catheter cartridge bags after receiving the trigger signals, impact force generated by explosion of the explosive acts on an impact head, the impact head impacts a test piece under the action of the blast load, and the test piece is cracked and generates movement cracks.The time-prolonging controller can send out a plurality of trigger signals simultaneously or sequentially to control the multi-channel pulse ignitor to detonate multiple cartridge bags simultaneously or sequentially, and the test piece can generate two or more movement cracks simultaneously or sequentially.The experiment loading system can change positions where the movement cracks are generated in the test piece and the initial expansion direction of the cracks by changing the relative position of the impact head and the test piece, great flexibility is achieved, and different experiment requirements can be met.

The invention provides a vacuum cavity assembly for a scattering experiment station. The vacuum cavity assembly comprises a vacuum cavity body, a corrugated pipe connected to the front end of the vacuum cavity body, a light-transmitting window arranged at the rear end of the vacuum cavity body, two sets of two-dimensional motion platforms arranged at the bottom of the vacuum cavity assembly, a first beam stopper, a second beam stopper, and photodiodes; a polyimide film is fixed at the light-transmitting window; the first beam stopper and the second beam stopper are respectively connected withthe two-dimensional motion platforms through a connecting device; the photodiodes are respectively arranged on the first beam stopper and the second beam stopper and are used for measuring light intensity; and the first beam blocker and the second beam blocker can move simultaneously or separately, and meet the requirements of three kinds of experiments, namely, SAXS (small-angle X-ray scattering)experiments, GISAXS (grazing incidence small-angle X-ray scattering) experiments and low-resolution XRR (X-ray reflectivity) experiments at the same time. The vacuum cavity assembly can realize largeq value measurement of a sample, and is simple in structure and easy to maintain. The beam stoppers can be flexibly disassembled, so that different experiment requirements of different users are met;and hardware conditions are provided for the automatic sample matching of the GISAXS experiment of the experiment station.

The invention relates to a microbiological detection kit, and belongs to the technical field of microbiological detection. The microbiological detection kit comprises a box bottom, a box wall connected with the box bottom, and a box cover which is connected with the box wall through a trapezoidal embedded structure; the box bottom comprises a heating device arranged in the box bottom, a support arranged on the heating device, and a test tube placing assembly arranged in the support; the heating device comprises an aluminium alloy heat conductive plate, and silicone rubber high temperature insulation cloth and a nicochrome heating wire which are arranged on the aluminium alloy heat conductive plate through bonding; the test tube placing assembly comprises test tube placing columns which areuniformly distributed in the support, first placing holes which are arranged along the axis directions of corresponding test tube placing columns, and second placing holes which are designed to stretch along the two sides of the corresponding first placing holes. According to the microbiological detection kit, the aluminium alloy heat conductive plate is arranged at the box bottom, so that heat radiation range is enlarged, and rapid heating of air is realized; a rotary fan is arranged on the box wall, under the effect of the rotary fan, a cold hot wind circulation field is formed, the temperatures of different points in the box body are ensured to be the same; the box bottom is provided with stepped holes, so that placing requirements of test tubes of different sizes are satisfied; the box cover is provided with a prominent sheet and an arc-shaped fixing sheet, so that it is convenient to open the box cover; operation is convenient; detection environment is ensured; and detection effect is improved.

The invention discloses a PLD (Pulsed Laser Deposition) preparation method of large-area molybdenum ditelluride, which comprises the following steps: under the conditions of certain temperature and pressure in a vacuum chamber of a pulsed laser deposition system (PLD), depositing a molybdenum ditelluride (MoTe2) film on a treated fluorine crystal mica substrate by using the pulsed laser deposition system; and packaging the deposited film and a proper amount of Te powder into a vacuum quartz tube for high-temperature annealing. According to different annealing conditions, two different-phase films of a semiconductor phase (2H-MoTe2) and a metal phase (1T '-MoTe2) can be prepared. The method is simple in principle, the thickness of the prepared molybdenum ditelluride can be regulated and controlled by changing the deposition time so as to meet different experiment requirements, compared with a traditional method, the centimeter-level large-area molybdenum ditelluride thin film can be stably prepared, raw materials can be greatly saved, cost can be greatly reduced, and the method is suitable for industrial production. And the process requirements of modern industrial preparation of molybdenum ditelluride are better met.

The invention discloses a litter collector for fresh collection and automatic degradation treatment and an operation method of the litter collector. The litter collector comprises an upper layer freshlitter collection device and a lower layer litter automatic degradation treatment device which are both made of antirust iron sheets; a main body of each of the upper layer fresh litter collection device and the lower layer litter automatic degradation treatment device is of a cylinder shape; and the upper layer fresh litter collection device and the lower layer litter automatic degradation treatment device are fixedly connected together in a nesting manner, and a layered type litter mesh bag is installed at the middle part to form the intact litter collector. For the litter collector, by fully utilizing the effects of the weight of litters and dusts and combining with the layered type litter mesh bag, the effects that automatic layering is performed for litter collection, and degradationtreatment is performed are achieved when the litter collector is put in the open air for a long time; long-term fixed-point collection work in a large range in the open air can be satisfied, and theupper layer collection device and the lower layer automatic degradation treatment device are separately used to meet different experiment requirements; and the litter collector has the advantages of solidness, durability, convenience in operation, wide practicability, flexibility and reliability in collection and the like and is suitable for popularization and application.

The invention discloses a multifunctional efficient sintering cup experimental device and method. The device comprises a mixing system, a sample splitter, a screening device (1), a dropping device (2), a dropping screening system (3), an air blast cooling device (4), rails (5), a sintering ore delivering trolley (6), a weighing device (7), a crushing device (8), a chimney (22) and two sets of independent systems: sintering cup slewing devices (10, 29), material distributing devices (12, 31), sintering cups (11, 30), ignition devices (9, 32), exhaust pipeline systems (13, 33), dust removers (16, 36), coolers (18, 38) and smoke exhaust fans (19, 39), wherein the double-station sintering cups are positioned on the two sides of the crushing device respectively; through a PLC, automatic control, detection and recording of technological parameters like the ignition temperature, the sintering negative pressure, the material layer temperature, the flue gas temperature, flow rate and components can be realized. According to the multifunctional efficient sintering cup experimental device and method, provided by the invention, the stability and accuracy of the sintering experiment can be improved.

The invention discloses an electrical pulse treatment method for improving chalking resistance of an aluminum ferro silicon manganese alloy. The mass percentage of each chemical component in the aluminum ferro silicon manganese alloy is that 49-51% of Mn, 19-21% of Al, 17-20% of Si, 5-14% of Fe and the balance of impurity elements such as carbon. The alloy preparation process comprises the following steps of (1) weighing each raw material according to designed components; (2) adding each raw material to be smelted according to a designed sequence; (3) when all raw materials are melted, switching off an induction furnace power supply; and meanwhile, inserting two pure ferro electrodes connected with an electrical pulse power supply into a high temperature molten pool; and applying high-energy density pulse current to the interior of the molten pool; and (4) after 5-10 minutes of electrical pulse treatment, cooling the molten pool to obtain the aluminum ferro silicon manganese alloy. Theproduct obtained by the electrical pulse treatment method for improving the chalking resistance of the aluminum ferro silicon manganese alloy has the advantages of smaller grain size, compact alloy structure, stable structure, excellent chalking resistance and long alloy storage period. Requirements of a deoxidizing agent for steel making are met.

The invention discloses an artificial conglomerate core which is used an indoor physical simulation experiment, and belongs to the technical field of oil-gas field development physical simulation. The artificial conglomerate core is mainly prepared from the following raw materials in percentage by weight: 2-15% of clay, 5-25% of cementing matter, 20-50% of river sand and 30-60% of quartz sand. The artificial conglomerate core has the advantages that the source problem of the conglomerate core in physical simulation is solved, the obtained artificial conglomerate core is stable in structure, complicated in pore throat structure and diverse in core components, has the characteristics of simple structure and stable property and can replace natural core to be used in physical simulation, and the shortcomings that the pore throat disposition, wetting property and the like of the synthetic core have great difference from those of the natural core are effectively overcome.

The invention discloses an artificial sandstone core used in the indoor physical simulation experiment, and belongs to the technical field of oil-gas field development simulation. The artificial sandstone core is prepared from the following raw materials by weight percent: 2-20% of clay, 5-25% of cement, 0-10% of feldspar (not containing 0) and 70-95% of quartz sand. The pore throat structure distribution curve of the core is adjustable, the wettability is adjustable, the pore throat distribution range is wider and capable of representing double-peak distribution, and the pore throat structure is more complex. The substance component in the stratum natural rock is generated through the silicate mixture in the cement and the subsequent treatment so that the component of the artificial sandstone is diverse, the defects that the artificial core pore throat distribution and wettability are much different from those of the natural core are effectively overcome, the natural core can be more accurately and really simulated, the artificial sandstone core is simple in structure and stable in performance and suitable for replacing natural core in the physical simulation.

The invention discloses a multifunctional ion gun, comprising an ionization chamber, a first lens, a second lens, a first deflector plate, a second deflector plate, a slit, a four-way flange, a transition flange and a tapered cylinder, The ionization chamber, the first lens and the first deflection plate are located in the pipe of the four-way flange, and the first lens is located between the ionization chamber and the first deflection plate, and the first deflection plate is installed near the transition flange end, the ionization chamber is installed at the far end of the transition flange, the second lens, the second deflecting plate and the slit are located in the conical cylinder, the second deflecting plate is located between the second lens and the slit, and the second lens is installed At the proximal end of the transition flange, a slit is installed at the far end of the transition flange, and the cross flange and the tapered cylinder are connected through the transition flange. In order to achieve the purpose of compact structure, multiple functions, stable performance and enhanced ion beam transmission distance.

The invention discloses an experiment loading system and method for researching interaction of explosion stress waves and moving cracks. A drop hammer freely falls and hits an impact head, and the impact head applies impact loads on a test piece, so that the test piece is subjected to crack initiation to generate moving cracks; an electric signal is generated when the drop hammer makes contact with the impact head, the electric signal is transmitted to an automatic tracking synchronous machine through a signal line, and the automatic tracking synchronous machine sends out triggering signals to a multi-channel pulse igniter; the interval between the time when the automatic tracking synchronous machine receives the electric signal and the time when the automatic tracking synchronous machine sends out the triggering signals can be set in advance; the multi-channel pulse igniter discharges immediately after receiving the triggering signals, discharging is performed at the tip of an initiation probe connected with an initiation line to ignite explosive in an explosive bag, and explosion stress waves are generated; the experiment loading system ignites one or more explosive bags at different periods of moving crack expansion, the explosion time interval of multiple explosive bags can also be set artificially, and different experiment requirements can be met.

The invention provides a multifunctional oral cavity material testing machine. In an existing oral cavity material evaluation test, a test device has a single function, and each device can only test single performance of a single material; traceability is difficult, the existing test device is mostly designed temporarily, there is no corresponding design specification, there is no verification orcalibration specification, and a measurement result is difficult to trace; and an subjective influence is difficult to avoid, the existing test device is mostly the simple device which requires manualoperation, sometimes, the device needs to be used together with displacement measuring equipment, timing equipment and the like, and the influence of a human subjective factor is difficult to avoid.The testing machine can be widely used in the performance evaluation field of different oral cavity medical devices.