207results about How to "Facilitate experimental research" patented technology

The invention discloses a wind sand environment and engineering wind tunnel simulation device, in particular to a large opening direct-flow air blowing typed wind sand environment and engineering wind tunnel simulation device which is specially used for simulating wind sand movement and sand control engineering; the wind sand environment and engineering wind tunnel simulation device comprises a tunnel body which comprises an air inlet section (3), a transition section (4), a damp part with a damper (5), a first diffuser (6), a stabilization section (7), a contraction section (8), a speed vehicle (9), a testing section (10) and a second diffuser (11) which are sequentially connected one after another; and the power system is connected with the air inlet section (3) and is used for providing the power for the wind tunnel by a DC motor. The wind sand environment and engineering wind tunnel simulation device can truly simulate the wind sand control, thus pushing the wind sand control technique to go ahead; furthermore, the wind sand environment and engineering wind tunnel simulation device can carry out the test for preventing the diffusion of contamination and the test for the building dynamics characteristic and the like.

The invention relates to a blast furnace first slag experiment method and a first slag experimental furnace which solves the problem that the current experiment method can not well guide the optimization of furnace material structure for first slag can not be acquired. The first slag experimental furnace comprises an electric furnace and an air distribution cabinet, wherein the electric furnace is provided with a hearth pipe; a graphite crucible positioned on a graphite base is arranged in the hearth pipe; the upper end of the graphite crucible is provided with a center press rod, and the upper end of the center press rod penetrates through the hearth pipe and is provided with an inserted thermocouple; a material surface load readjusting device is arranged on the center press rod; the upper end of the hearth pipe is provided with an upper cover, an exhaust opening and a displacement sensor, and the lower end is provided with a material receiving box and communicated with the air distribution cabinet by a reducing gas inlet; and a pressure difference transmitter is arranged on a connecting pipeline of the reducing gas inlet and the air distribution cabinet. The experiment method obtains first slag by simulating the blast furnace condition through the first slag furnace, records all detecting data on line and carries out chemical analysis and microscopic detection on the first slag, thereby having important guide significance for optimizing the furnace material structure.

The invention discloses a pneumatic banana spike stem clamping device which comprises a rack, guide rod cylinders, two guide shafts and two clamping component installation units, wherein the two guide shafts are symmetrically arranged on the rack; each guide shaft is provided with a first linear sliding block and a second linear sliding block; the two clamping component installation units are symmetrically arranged between the two guide shafts; two ends of one clamping component installation unit are respectively connected with the first linear sliding blocks on the two guide shafts, and two ends of the other clamping component installation unit are respectively connected with the second linear sliding blocks on the two guide shafts; the two clamping component installation units are driven by the corresponding guide rod cylinders; a space through which banana spike stems can pass is formed by combination between the two clamping component installation units which are respectively provided with clamping component installation positions; clamping components for clamping the banana spike stems are respectively arranged at the clamping component installation positions on the two clamping component installation units. The pneumatic banana spike stem clamping device has the advantages of being compact in structure, convenient in installation, safe and labor-saving in operation, and the like.

The invention discloses a blade tip coupled cooling experiment system for turbine blades of a gas turbine. The blade tip coupled cooling experiment system comprises a high temperature main flow channel, a U-shaped cooling channel, an experimental test section and a data acquisition and analysis system, wherein the high temperature main flow channel comprises a temperature control box, and a main flow gas pump, a main flow gas flow stabilization tank, a main flow gas heater and a main flow three-way electromagnetic valve which are sequentially connected; the U-shaped cooling channel comprises acold flow outlet vacuum pump, and a cold flow inlet gas pump, a cooling gas flow stabilization tank, a cooling gas heater and a cold flow inlet three-way electromagnetic valve which are sequentiallyconnected; the experimental test section comprises a U-shaped cooling channel, a high-temperature main flow channel and a blade tip plate with a through hole in the center, and an embedded plate is embedded in the through hole; the data acquisition and analysis system comprises a cooling channel infrared thermal imager, a main flow channel infrared thermal imager, a CCD camera, and a data acquisition and analysis computer connected with the cooling channel infrared thermal imager, the main flow channel infrared thermal imager and the CCD camera; and an outlet of the main flow three-way electromagnetic valve is communicated to an inlet of the high temperature main flow channel, and an outlet of the cold flow inlet three-way electromagnetic valve is communicated to an inlet of the U-shaped cooling channel.

The invention is applicable to the field of producing optical fiber devices, and provides an optical fiber tapering device and method. The optical fiber tapering device comprises a bottom plate, a rotating module, a heating furnace, and a heating pipe, wherein the bottom plate is used for supporting; the rotating module is arranged on the bottom plate, and used for rotating and stretching to-be-treated optical fiber connected on the rotating module; the heating furnace is arranged on the bottom plate and arranged in parallel to the rotating module, and used for heating a part of to-be-treated optical fiber to a fusion state so as to facilitate stretching; and the heating pipe is arranged in the heating furnace and used for the to-be-treated optical fiber to penetrate through so as to fix the to-be-treated optical fiber and prevent a part, positioned in the heating pipe, of the to-be-treated optical fiber from being oxidized in heating. The invention further relates to an optical fiber tapering method based on the optical fiber tapering device, and the method comprises the following steps: interspersing, placement, winding, ventilation, heating, stretching and the like. The device realizes the laboratory manufacturing of micronano-level optical fibers, the cost of the optical fiber tapering device can be lowered, and the device is suitable for use in experimental study.

The invention provides a kit and a method capable of quickly separating adipose tissue-derived stem cells. The kit comprises a washing liquid, a cell culture fluid A, a cell culture medium B and a cell digestive juice, wherein the washing fluid is normal saline (containing 0.9% sodium chloride); the cell culture medium A is a Knockout-DMEM liquid medium containing 100 ng/mL LIF and 100 ng/mL bFGF cytokines; the cell culture medium B is fetal bovine serum; and the cell digestive juice is a collagenase type I enzyme solution with a mass to volume percent concentration of 0.2%. Compared with a conventional separation culture method, the cells obtained by the kit have high purity and fast propagation. Generally, a primary cell culture can be completed in seven days; the primary cells are sub-cultured by using the culture solution, and cell density can reach 90% in 2-3 days. The kit and the method provide a rich source for further experimental study by using the adipose tissue-derived stem cells.

Integrated medium frequency current and electric field exciting equipment comprises a single chip microcomputer central control unit, an insulation or contact integrated electrode, a signal generation unit, a power amplification unit and an output switching module. The insulation or contact integrated electrode is formed by a current exciting part and an electric field exciting part, the signal generation unit is connected with the single chip microcomputer central control unit and generates exciting signals of different shapes and frequencies under the control of the single chip microcomputer central control unit, the power amplification unit is connected with the signal generating unit and amplifies the exciting signals, the output switching module is connected with the power amplification unit, enables the amplified exciting signals to be connected to one lead wires under the control of the single chip microcomputer central control unit. According to the integrated medium frequency current and electric field exciting equipment, medium frequency electric field excitation or medium frequency current excitation can be carried out on the cells or the tissue of tumors according to the selection of experimenters, and the two kinds of excitation can also be carried out alternatively to observe synergistic effects.

The invention discloses an experimental device and an experimental method for linear dynamic sealing characteristics of sealing rings. The experimental device comprises a base, wherein a rodless cylinder is mounted on the base, a shaft is arranged at the top of the rodless cylinder and sleeved with a sleeve assembly, and the bottom of the sleeve assembly is fixedly connected with a slider on the rodless cylinder; three sealing ring mounting parts are arranged in the sleeve assembly along the shaft at intervals, the sealing rings are mounted in the sealing ring mounting parts and can reciprocate with the sleeve assembly along the shaft, an accommodating cavity penetrated by the shaft is formed between every two adjacent sealing ring mounting parts in the sleeve assembly, and a pressure regulating device and a pressure sensor are also mounted on the surface of the sleeve assembly. According to the experimental device for linear dynamic sealing characteristics of the sealing rings, the slider of the rodless cylinder drives the sleeve assembly to reciprocate along the shaft, the working state of the sealing rings during linear reciprocation can be simulated after the sealing rings are mounted at the mounting parts, the sealing rings and the shaft form friction pairs in the process, and the friction characteristics of the sealing rings can be experimented.

The invention discloses a two-freedom-degree hybrid stepping motor for bionic eyeballs of a robot. The stepping motor comprises a first freedom degree motor, a second freedom degree motor and output shafts, wherein the first freedom degree motor is of a circular structure with a notch, the second freedom degree motor is of a circular structure with an opening, the notch is matched with the opening, and the planes of the two motors are perpendicularly orthogonal; the first freedom degree motor and the second freedom degree motor both comprise stators and rotors, the stators and the rotors can relatively move in the planes of the motors, and the two-freedom-degree movement of the output shaft of one freedom degree motor can be achieved through respective independent movement of the two freedom degree motors. The two-freedom-degree hybrid stepping motor has the advantages of being simple in structure and manufacture technology, convenient in analysis design, high in mechanical integration level, high in open-loop operation location accuracy, easy in performance experiment test and favorable for shortening the development period of products and improving the performance and the competitiveness of the products.

The invention belongs to the technical field of geotechnical model test researches and relates to an impact rolling model tester and application thereof. The tester comprises a test control chamber, a traction device, slide guides, an impact wheel, a test chamber and a main framework, wherein the traction device comprises an alternating-current motor, an inhaul cable, a guide pulley and a pulley stay bar; one end of the inhaul cable is fixedly arranged on a winding pulley of the alternating-current motor; the other end of the inhaul cable is connected with a connecting fixed block; the guide pulley is arranged on supports through the pulley stay bar; the slide guides comprise two parallel and horizontal polish rods; sleeves are respectively welded at the top ends of the polish rods; the polish rods are respectively and fixedly arranged at both sides above the test chamber through the sleeves by two supports which are vertical with the ground; and the wheel shaft of the impact wheel is connected with a rocker arm through a connecting rod. According to the impact rolling model tester, an impact rolling action process on a soil body can be simulated. The impact rolling model tester is used for researching the reinforcement mechanism and the influencing factor of the impact rolling technology.

The invention provides an artificial slope surface structure for physical resistance experiment measurement,which comprises a base,an angle adjusting disc and a sliding block; an upward side guard board is fixedly connected with the front end and the rear end of the base respectively,a charging head is arranged in the front end plane of the side guard board at the front end of the base,and a datatransmission interface is arranged in the rear end plane of the side guard board at the rear end of the base. According to the invention,an inclined plate capable of ignoring force of friction,a first-stage friction bottom plate,a second-stage friction bottom plate and a third-stage friction bottom plate are arranged,and the friction resistance relationship among the first-stage friction bottom plate,the second-stage friction bottom plate and the third-stage friction bottom plate is 1-fold,2-fold and 3-fold sequentially,thereby being capable of forming a sharp contrast experiment at the time of performing the physical experiment,and facilitating accepting more vivid learning experience for students,regular growth of friction resistance facilitates summarizing various stress relationships on the inclined plate for the students.