41results about How to "Save research funds" patented technology

The invention relates to a diesel engine in-cylinder spraying and combustion visualization testing apparatus and testing method. The testing apparatus is mainly composed of a digital CCD camera, a computer image acquisition and processing system, a nitrogen cylinder, a pressure stabilizing barrel, a compressed air bottle, a pressure reducing valve, a light-emitting unit, an angle marking instrument, a frequency multiplier, a stroboscopic gun, a diesel engine test cylinder, an endoscope and a stroboscope. During testing, an optical system top head center corresponding to a mechanical top head center of a diesel engine is found out; initialization parameter setting is carried out; dynamic spraying image collection and in-cylinder combustion dynamic shooting are carried out; collected image processing is carried out by using system software of the computer image acquisition and processing system; and then the collected image is processed by using the system software of the computer image acquisition and processing system. According to the invention, with the visualization testing apparatus and testing method, the basis can be provided for the research of improvement of diesel engine air-intake organization, spraying and combustion chamber structure; the accuracy of the apparatus is high; and the operation is convenient.

The invention discloses a gunpowder combustion property test device under pressure reduction condition, wherein, a watch window, a pressure discharge component, a pressure sensor and an igniting component are arranged on a combustion chamber of the device; the pressure discharge component is communicated with a pressure gas buffer tank which is filled with certain-pressure nitrogen and a high-speed camera can shoot combustion process of gunpowder sample through optical lens and the watch window; when the gas pressure in the combustion chamber reaches the pressure-proof critical value of the pressure discharge component by the combustion of gunpowder sample, the pressure discharge component discharges the gas in the combustion chamber into the pressure gas buffer tank; a data collection system collects and records the data output by the pressure sensor and the high-speed camera; and an operator can obtain related property parameters of the gunpowder sample based on analysis and calculation of recorded data. The invention can measure the combustion speed, flameout state and parameters of gunpowder under different pressures and pressure reduction rates and has the outstanding advantages of high measurement pressure, large regulating range of pressure reduction rate, low test cost and wide application scope.

The invention discloses a testing device of gunpowder combustion characteristics in vacuum, which mainly comprises a combustion chamber, a vacuum pump, an electric heater, a thermoelectric couple, a high speed camera and a data acquisition and processing system; wherein, the vacuum pump provides vacuum environment for the combustion chamber; by controlling the heating current and the heating timeof the electric heater, different ignition isoperibols can be provided for tested gunpowder samples in the combustion chamber; and the data acquisition and processing system collects the test data generated by the thermoelectric couple and the gunpowder combustion images shot by the high speed camera when the tested gunpowder samples combust, and finally obtains the combustion characteristics of the tested gunpowder samples through corresponding processing and calculation. The invention not only can be used for testing the parameters such as combustion speed, combustion surface temperature and combustion heat and the like of the gunpowder in vacuum, but also can be used for the generation and collection of the combustion products of the gunpowder under different vacuum conditions. The invention has the overriding advantages of high integration level, obtaining various parameters by one testing and low testing expenses.

The invention discloses a quick boxing device for pipette tips used in laboratories, which is characterized in that it comprises a tip positioning device, the outer side of the positioning device is connected with the bottom bracket of the baffle, and the bottom bracket of the baffle is provided with a baffle The gun head positioning device is composed of multiple groups of metal sheets, each group of metal sheets is composed of two rotatable metal sheets, the two metal sheets are connected by a central shaft, and the end of the central shaft is connected with the bottom bracket of the baffle , each metal sheet is distributed with a plurality of grooves, the grooves of any two adjacent and different groups of metal sheets form a gun head hole corresponding to the gun head; the bottom bracket of the baffle is provided with control two adjacent and Different sets of sheet metal open and close boxed levers. Through the quick boxing device for pipette tip of the present invention, the tip can be boxed at one time, easy to operate, and compact in structure, thereby saving experiment preparation time, saving scientific research funds, and improving experiment efficiency.

The invention relates to a method and equipment for ultrasonic-assisted continuous casting and rolling of magnesium alloys, belonging to the field of ultrasonic composite preparation of high-strength metal alloys. The technical features of the patent of the present invention are: the ultrasonic emitting device acts on the upper and lower parts of the metal sleeve to form a composite device integrating cooling and refinement; the cooled and refined magnesium alloy moves towards the rolling mill through the action of the tractor, and is monitored by temperature The device measures the temperature of the alloy surface, determines the position of the rolling mill, and finally achieves the purpose of being able to control the rolling of the alloy at different temperatures. The present invention mainly includes a heat preservation device, a cooling device, a temperature measuring device, an ultrasonic emitting device, and a continuous casting and rolling device; Cover 6, cooling device 7, tractor 8, laser temperature detector 9, rolling mill 10.

The invention relates to a method of improving the uniformity of the wall thickness of a magnesium alloy superplastic gas bulging formed piece by utilizing an inorganic adhesive. The method concretelycomprises the following step of utilizing multiple inorganic adhesives with different viscosities, or coating different deformation areas of a magnesium alloy bulged piece with the inorganic adhesivewith different thicknesses and same viscosity, wherein the deformation rates of different deformation regions are homogenized through the "adhesion" effect of the inorganic adhesive, so that the improvement effect to different wall thicknesses of magnesium alloy is achieved; a selected type of the inorganic adhesive is a double-component adhesive, a component A is water glass, and a component B is formed by mixing and sintering silica, alumina and the like; and by changing the content of the water glass, the adhesives with different viscosities can be obtained. By adopting the method of the invention, the problem of unevenness in wall thickness of a magnesium alloy plate caused by factors including plate instability, unevenness in stress, different thinning rate and poor die adhering effect in the magnesium alloy high temperature gas bulging forming process can be solved, the formation effect of the process is further improved, operation is simple, realization is easy, the cost is lowered, and the production efficiency is improved.

The invention discloses a PSM high-voltage power supply system and a feedback control realization method therefor. The PSM high-voltage power supply system comprises a high-voltage wire-inlet part, wherein the high-voltage wire-inlet part is formed by two high-voltage circuit breaker cabinets which are connected with a high-voltage contactor cabinet in series separately; two high-voltage contactor cabinets are connected with a multi-winding high-voltage isolation transformer separately; the multi-winding high-voltage isolation transformer is connected with low-frequency rectifying power supply modules and high-frequency rectifying power supply modules separately; and the low-frequency rectifying power supply modules and the high-frequency rectifying power supply modules are all connected in series and then connected to a load. By adoption of the PSM high-voltage power supply system and the feedback control realization method therefor, the problem of severe fluctuation on high-voltage output caused by power grid disturbance in a discharging period of an EAST apparatus is well solved, so that the control requirement of a klystron on voltage precision is satisfied, thereby satisfying requirements of various physical experiments.

The invention discloses a method for cleaning and reusing microdissection sample-collecting tubes. The method can be implemented according to the following steps in turn: (1) adding xylene to a collecting tube, capping and oscillating the collecting tube and discarding the xylene; (2) adding suspension A to the collecting tube, oscillating and then emptying the collecting tube; (3) adding double-distilled water to the collecting tube while adding silica particles, oscillating and then emptying the collecting tube; (4) repeating the step (2) and the step (3) twice in turn; (5) adopting the double-distilled water to wash the collecting tube; (6) uncapping the collecting tube and placing the collecting tube in a refrigerator till liquid completely evaporates; (7) taking the collecting tube out, smearing polylysine on the surface of a viscous module on the inner surface of a tube cap, putting the collecting tube back into the refrigerator and keeping the collecting tube standing; and (8) repeating the step (7). The method can effectively maintain and repair the adhesion property of the viscous module on the inner surface of the tube cap of the collecting tube, and can effectively remove superfluous substances remaining in the collecting tube so as to repeatedly recycle the collecting tube and save a large amount of experiment funding.

The present invention relates to marine biology, paleoceanography, sedimentary geology and other disciplines, and can be applied in the fields of foraminifer species identification research, marine environment indication research, paleoenvironment reconstruction and global change research, etc. Specifically, it is a A rapid preparation method for deep-sea foraminifera lumen structure grinding plate. Foraminifera isolated from deep-sea sediments were treated with gum immersion, hanging drop embedding, position adjustment and water grinding, that is, complete grinding of the inner cavity structure of deep-sea foraminifera was quickly obtained. The invention can more accurately identify the species of the foraminifera through the level information obtained by grinding, and avoid scientific confusion such as identification errors caused by external morphological variations such as the shape, texture, and number of chambers of the foraminifera. The invention provides accurate scientific basis and quick problem-solving scheme for the accurate identification of types of deep-sea foraminifera and the research on indications to the marine environment, paleoenvironment reconstruction research, global change research and other subject fields.

The invention relates to a method for controlling the force when actively burnishing the disc. It comprises that: the computer transfers the data and control instruction to the single chip; the single chip control the drawing motor to rotate the ball lead screw and the nut pushes the lever to frap steel wire; the pull sensor measures the tension force of steel wire; the measured result is transferred to single chip; at the same time, the current signal of control motor is feedback to the single chip; the single chip processes PID calculation via power amplifier to be transferred to control motor to regulate rotation speed to adjust the pull of steel wire. Since said steel wire can continuously change the shape of active burnishing surface to keep the same with adhesive part of burnished optical mirror face. The invention also provides a relative device. Since it uses a pull ring-current ring control system while integrates the computer signal process, motor driving, and the process of pull sensor into one circuit to simplify the circuit structure, the invention has small volume, lighter load and quick dynamic response.