52results about How to "Ensure experiment safety" patented technology

Disclosed are a network experiment system based on closed-loop control and an achieving method of the network experiment system. The system comprises an entity experiment system, a control module, a measuring module, an on-site computer, a video monitoring system, an on-site server and a remote client, the entity experiment system is connected with the on-site computer through the control module and the measuring module, the measuring module is used for measuring parameter signals of the entity experiment system, the control module receives a control signal of the on-site computer and performs loop control over the entity experiment system, the on-site computer and the video monitoring system are respectively connected with the on-site server through a wired or wireless network, the control information and display information of the entity experiment system are transmitted to the on-site server, and on-site video information of a laboratory is transmitted to the on-site server. The system has the advantage of remote control, the experiment is converted into entity operation from virtual simulation, in the actual operation, the video telepresence technology is matched, an experimenter feels personal on the scene, resource sharing is achieved, and the utilization rate of the equipment is greatly improved.

The invention discloses 3D (Three Dimensional) printing equipment for printing an artificial heart and a bionic construction method of the artificial heart. A bionic construction method of an artificial organ is characterized in that the artificial organ comprises an artificial organ thin wall, a bionic blood vessel micro-flow channel, a cell tissue structural layer and a bionic extracellular matrix; the bionic construction method of the artificial organ comprises the following steps: S1: scanning a hospital image; S2: carrying out pathologic analysis according to acquired scanning information; S3: carrying out model layering treatment on a constructed reference STL model and a comparison STL model; S4: inputting slice data prepared by scattering into a 3D biological printing machine; S5:carrying out 3D printing; S6: constructing an organ culture environment. The invention further discloses the 3D printing equipment for realizing the method.

The invention discloses a punching abrasion testing device based on control energy, and makes up the deficiencies of multiple existing frictional wear testing devices and research methods. The punching abrasion testing device based on control energy mainly comprises a rack, a tangential linear motor, a test specimen fixture, an impact linear motor, an accurate magnetic grid sensor, an impact block, an electric sucking disk, a silicon steel sheet, a pressure sensor and a grating sensor, wherein the accurate magnetic grid sensor is used for feeding back the motion of the linear motor in real time; the electric sucking disk and the silicon steel sheet are used for controlling the impact block to move; the pressure sensor is used for collecting impact force and tangential force; and the grating sensor is used for collecting the motion of the impact block and the tangential motion of the test specimen. By use of the device, through design that a method of speed and quality control is adopted to control the energy of the impact block, impact and tangential compound abrasion is realized by a punching coupling motion way, and the defect that an existing tester researches a punching abrasion process only from the perspective of force is effectively overcome.

The invention discloses an electric equipment control circuit applied to supersonic combustion test. The electric equipment comprises a power supply and control button power supply module, an emergency stop circuit module, a pure manual button circuit module, a manual button circuit module, a pure manual circuit module, a manual-automatic integrated circuit module and an automatic control module. The electric equipment control circuit can be used for manually and automatically controlling various types of equipment applied to the supersonic combustion test, wherein a manual control function is suitable for debugging in a non-experimental process, and an automatic control function can be used for accurately controlling the time sequences of all types of equipment applied to an experiment, so that the supersonic combustion test can be conducted orderly and normally. In case of various emergency situations in the experimental process, the control circuit can be used for switching off dangerous equipment through an emergency stop button, so that experimental safety is ensured. If a main power supply is damaged due to the situations of short circuit and the like in an experimental process, the control circuit can be used for rapidly switching to a standby power supply to supply power to the equipment continuously, so that experiments can be conducted safely.

The invention discloses a multi-physics field coupling oil paper insulation partial discharge detection system based on a UHF method. The multi-physics field coupling oil paper insulation partial discharge detection system is mainly composed of a multi-physics field coupling oil paper insulation partial discharge device, a UHF signal acquisition device, a data transmitting unit and a host displayunit, wherein the multi-physics field coupling oil paper insulation partial discharge device comprises a DC power supply, a harmonic power supply, a compound unit and an analog partial discharge device; output ends of the DC power supply and the harmonic power supply are connected with an input end of the compound unit; an output end of the compound unit is connected with an input end of the analog partial discharge device; the UHF signal acquisition device is in signal connection with the analog partial discharge device; and the data transmitting unit is used for effectively acquiring partialdischarge pulse signals, and transmits the partial discharge pulse signals to the host display unit in a wireless transmission mode. The multi-physics field coupling oil paper insulation partial discharge detection system realizes the simultaneous application of a DC voltage and a harmonic voltage, and can simulate the complicated working conditions of a valve side bushing of a converter transformer precisely.

The invention discloses a novel natural gas diffusion coefficient measurement experiment device which mainly comprises a novel rock core holder, a differential pressure sensor, a pressure gauge, a multi-way valve, a confining pressure pump, a vacuum pump, a hydrocarbon gas source, a nitrogen gas source, a gas chromatograph, an intermediate container, a sample cavity, a pressure stabilizing deviceand a pressure sensing alarm device. The rubber sleeve of the novel rock core holder can prevent the phenomenon that the rock core is clamped in the holder due to improper operation when the rock coreis replaced, the pressure stabilizing device is connected with the sample cavity to ensure that after the sampling is finished, the internal pressure of the cavity is kept stable, one experimental variable is reduced, and the experimental result is more accurate and reliable. The pressure sensing alarm device presets a pressure lower limit value before the experiment is carried out, if the equipment leaks air during the experiment, the pressure is reduced to a lower limit value, the sensing device can sense and send a warning to the mobile equipment of the experimenter in time, which is of great significance to ensure safe performance of the experiment.

The invention discloses a testing device and a testing method of an intelligent disconnecting switch and a circuit breaker. The testing device comprises the components of a single-chip microcomputer,a voltage acquisition circuit, a current acquisition circuit, a switch amount isolation acquisition circuit, a driving output circuit, a starting-stopping button circuit, a multifunctional turn buttoncircuit, a liquid crystal display device circuit, an expanded static memory circuit and an isolated communication circuit, wherein the voltage acquisition circuit, the current acquisition circuit, the switch amount isolation acquisition circuit, the driving output circuit, the starting-stopping button circuit, the multifunctional turn button circuit and the liquid crystal display device circuit are respectively connected with the single-chip microcomputer electrically; and the expanded static memory circuit and the isolated communication circuit are electrically connected with the single-chipmicrocomputer. The switch amount isolation acquisition circuit acquires a voltage signal at a switch position. Through a protective circuit which is composed of self-recovery fuse and a transient protecting diode, the voltage signal is input into an isolated optical coupler through a current limiting resistor and a filtering capacitor, thereby ensuring no burndown of rear devices. The testing device and the testing method have beneficial effects of accurately measuring switching-on and switching-off operation time of the disconnecting switch and the circuit breaker, and satisfying requirementof a railway power grid to switching-on time and switching-off time of the disconnecting switch and the circuit breaker.

The invention discloses a gaseous medium dynamic caving coal and powder flowback mechanism simulation experimental device and method. The experimental device comprises a multi-gas high-pressure gas injection child device, a main body device and a coal powder collecting child device. The main body device at least comprises a simulation drill pipe and a pressure chamber, coal samples are placed in an inner cavity of the pressure chamber, and the simulation drill pipe is arranged in the inner cavity. The multi-gas high-pressure gas injection child device is connected to the main body device through a gas injection pipeline, and the gas injection pipeline extends into the pressure chamber. The coal powder collecting child device comprises a dust collector, a coal powder collecting tank and a water collecting tank, the coal powder collecting tank is connected to the pressure chamber through a discharge pipeline, the dust collector is arranged above the coal powder collecting tank, the coalpowder collecting tank is provided with a drainage pipe, and the drainage pipe discharges water into the water collecting tank. Therefore, in order to deeply study the gaseous medium dynamic caving and coal powder flowback mechanism and optimize process parameters, the gaseous medium dynamic caving and coal powder flowback mechanism simulation experimental device and method aim at the ''double outburst'' problem in a broken and soft outbrust coal seam mining area, and a theoretical basis for the selection of a gaseous medium dynamic caving construction process and key parameters of the processis provided.

The invention relates to an emergency protector, in particular to a fault emergency protector for a low-oxygen animal rearing cabin, which is used for preventing excessive oxygen deficiency and power failure of the animal rearing cabin. The emergency protector is provided with an air storage unit, a power failure detection unit, an animal rearing cabin oxygen deficiency detection unit and a central processing unit, wherein the central processing unit is capable of monitoring oxygen content of the air in the animal rearing cabin and power supply conditions of mains supply, and controlling a valve to open a pipe through a valve drive unit to deliver the air in the air storage unit into the animal rearing cabin once ultralow oxygen content of the air in the animal cage or failure of the mains supply is detected, and accordingly, the oxygen content of the air in the animal rearing cabin can be maintained for a certain period of time, and death of experimental animals due to excessive oxygen deficiency caused by power failure or vent channel blockage of the animal rearing cabin can be avoided.

The invention discloses a mechanical sealing testing device and method for experimental teaching, and belongs to the technical field of sealing testing. The mechanical sealing testing device comprisesa rack, a computer, a motor, a torque rotating speed measuring instrument, a bearing pedestal, a transmission shaft, a sealing cavity, an oil tank, a bidirectional hydraulic pump and a pipeline; thecomputer, the motor, the torque rotating speed measuring instrument, the bearing pedestal, the transmission shaft and the sealing cavity are mounted on the rack; the motor, the torque rotating speed measuring instrument and the transmission shaft are connected in sequence; the transmission shaft is connected with the sealing cavity through a cotter pin and a convex key; the opening position is connected with an oil inlet and an oil outlet of the sealing cavity through the pipeline; the rack is further provided with the bidirectional hydraulic pump and the oil tank; and the oil tank, the bidirectional hydraulic pump and the sealing cavity are sequentially connected into a loop through the pipelines. The sealing performance of the testing device is improved, the dismounting convenience of the device in the sealing cavity is improved, the replaceable design is realized, and the experimental test can be performed for more mechanical sealing devices.

The present invention discloses a controlled pressurization chromatography system and a chromatography method thereof. The system comprises: a liquid storage device provided with a liquid inlet, a gas inlet and a first liquid outlet, wherein the first liquid outlet position is provided with a first flow rate controller and a sample injector; a pressurization device provided with a pressurized gas outlet, wherein the pressurized gas outlet is connected to the gas inlet, and a pressure regulator and a pressure display device are arranged at the pressurized gas outlet position; a buffer device connected to the gas inlet and the pressurized gas outlet; and a chromatography device, wherein a chromatography space is limited inside the chromatography device, a filler layer is arranged inside the chromatography space, the sample injector is embedded into the chromatography space from the upper end of the chromatography device and is positioned above the filler layer, the lower end of the chromatography device is provided with a second liquid outlet, and a second flow rate controller is arranged at the second liquid outlet position. With the technical scheme of the present invention, the pressure controlling during the elution process can be achieved so as to ensure the safety of the experiment; and with the use of the sample injector, the batched adding of the sample to be separated and the eluent can be achieved so as to significantly improve the separation efficiency of the sample to be separated.

The invention relates to a cell detection system for main air pollutant ozone toxicity. The cell detection system for the main air pollutant ozone toxicity is characterized in that the input end of anozone generator is connected with the output end of an oxygen source through a pipeline; an oxygen pressure-reducing valve and an oxygen electromagnetic valve are arranged in sequence on the pipelinefrom the oxygen source to the ozone generator; an air compressor and the output end of the ozone generator are connected with the air inlet of a mixing chamber through the pipeline respectively; theair outlet of the mixing chamber is connected with the air inlet of a carbon dioxide incubator through the pipeline; a waste gas collection device is connected with the air outlet of the carbon dioxide incubator through the pipeline; an ultraviolet absorption ozone analysis instrument is electrically connected with the ozone generator and the oxygen electromagnetic valve; and the ultraviolet absorption ozone analysis instrument is used for sampling and analyzing air inside the carbon dioxide incubator, and outputting an electric signal for controlling the ozone generation amount of the ozone generator and the oxygen flow amount of the oxygen electromagnetic valve. By adopting the cell detection system, the ozone concentration can be comprehended accurately in order to actually and accurately determine the living states of cells under different simulated atmosphere environment ozone concentrations.

The invention discloses a carrying task labor intensity load measurement experiment system and method. The system is formed by two adjustable placing benches, variable-weight carrying boxes and carrying information acquisition devices. The adjustable placing benches and the variable-weight carrying boxes are used for simulating carrying tasks under various work conditions; and the carrying information acquisition devices are used for synchronously collecting and simulating carrying frequency and carrying height in the carrying task process. The device can carry out unified planning and collection on key elements, such as carrying height, carrying frequency and carrying weight, for calculation of labor intensity under a specific carrying task, thereby reducing experiment errors and facilitating carrying out the experiment. The system and method can calculate the amount of heat produced by a human body in unit time, and determine labor intensity load of an actual carrying task based on design of carrying distance, carrying weight and carrying time and according to the collected carrying frequency.

The invention discloses an irradiation experimental device for a pulse reactor. A radial duct is formed in the pulse reactor. The radial duct comprises a duct outlet. A neutron trap is arranged inside the radial duct; a shielding body is arranged outside the radial duct; and a passing hole is formed in the shielding body. The irradiation experimental device comprises a movable shielding cover, a shielding storage rack, a double-screw synchronous drive mechanism and an elevator, wherein the shielding storage rack is arranged at a position, which avoids an area of the passing hole, above the shielding body; the shielding storage rack is used for placing shielding irradiation cavities of different specifications; the elevator comprises an elevator car; and when the elevator car is located in the bottom-most layer, an opening of the elevator car is opposite to the duct outlet. According to the irradiation experimental device disclosed by the invention, the double-screw synchronous drive mechanism is used to drive the elevator car to move, so that automatic transfer and storage can be achieved in the shielding storage rack and the duct outlet, thereby achieving replacement and storage of a plurality of sets of experimental devices in a small experimental space, and also ensuring the radiation protection safety of laboratory personnel.

The invention relates to a super-miniature reactor for GC-MS headspace sampling qualitative analysis. The super-miniature reactor comprises a GC-MS headspace bottle, a reagent container, a floating raft, a powerful magnet and a pressure indication tube, wherein the reagent container is arranged in the headspace bottle and is used for containing reagents, the floating raft is used for containing samples and is arranged in the reagent container, an iron core is arranged in the floating raft, the powerful magnet is located at the bottom of the headspace bottle, and the pressure indication tube is fixed in the reagent container. Compared with the prior art, the super-miniature reactor has the advantages that micro-samples can react with water, acid or other chemical reagents in the closed headspace bottle, and gas produced in the reaction can be directly introduced into a gas chromatograph-mass spectrometer to be analyzed.

The invention discloses a hydrostatic testing system and method for a water-cooling converter. The system comprises a water circulation cooling device, a water supply pipe, a return pipe, a tested device and an exhaust valve; the water supply end of the water circulation cooling device is connected with the water supply end of the tested device through the water supply pipe, the water outlet end of the tested device is connected with the return end of the water circulation cooling device through the return pipe, the exhaust valve is installed on the return pipe, a main water inlet valve is arranged at the end, close to the water circulation cooling device, of the water supply pipe, and a main water outlet valve is arranged at the end, close to the water circulation cooing device, of the return pipe; a pressure testing pump is arranged on the side, far away from the water circulation cooling device, of the main water inlet valve arranged on the water supply pipe. The hydrostatic testing system and method have the advantages that pressure testing can be conducted rapidly and efficiently by utilizing existing devices and pipelines of an existing water circulation cooling system, all the devices are controlled through valves, pipe burst and water spray phenomena caused by excessive pressure can be effectively prevented, and test conversion between a hydrostatic test and a water circulation temperature-rise test can be conducted conveniently.

The invention discloses a multifunctional foam generation and foam performance testing device. A device main body is a glass tube (15) sleeved with a water bath casing pipe (16); the lower part of theglass tube (15) is connected with a glass funnel (12) through threads; the lower part of the glass funnel (12) is connected with a gas pipeline (4); the gas pipeline (4) is sequentially connected with a three-way valve (11), a gas flow meter (10), a pressure releasing valve, (9), a buffer tank (8), a one-way valve (7), a first gate valve (6), a pressure stabilizing valve (5), a pressure meter (3)and a high-pressure air cylinder (1); and an air valve (2) is arranged above the high-pressure air cylinder (1). According to the testing device, the flow and pressure of the gas are controlled by virtue of a valve system, so that relatively high safety is realized; the foaming number of times for generating foams can be arbitrarily adjusted; the melting effects caused by different temperature tothe foam can be researched; the influences caused by the size and distribution of the foam to the foaming characteristic and the stability can be researched; and the device is simple and convenient to operate.

The invention relates to a novel tissue culture tool rack. According to the technical scheme, the novel tissue culture tool rack comprises a base, a long-strip-shaped hole which is used for fixing scissors, a round hole which is used for fixing tweezers and a scalpel and a round hole body which is used for fixing an alcohol lamp, and the holes of a fixing tool are all located in the base. The novel tissue culture tool rack has the advantages that the holes with different shapes and sizes are formed, it is guaranteed that tissue culture tools of various types can be inversely cooled, the toolscannot be contaminated due to incomplete disinfection of the tool rack while the tools cannot slide off, convenience and high efficiency are achieved, and time can be saved; and the alcohol lamp can be fixed, so that the danger caused by careless knock-down of the alcohol lamp in the experiment process is prevented, and it is guaranteed that the experiment is carried out safely.