997results about How to "Control flow rate" patented technology

The invention relates to a soil slope water flow erosion resistance simulation test method and device. The device comprises a liftable slope simulation device, a sheetflood scouring simulation device, a water and soil collecting device, a flow velocity determining device and a slope surface form camera device. According to the test method, the water flow is controlled, surface flow and seepage are formed, and sheetflood water, seepage water and sediment quantity formed by scouring slopes by sheetflood water are collected. The flow, the flow velocity, the erosion depth, the sand yield and the like of the water flow are measured quantitatively. Compacted soil is soaked in water until saturation for simulation, the efficiency of an indoor simulation test on slope scouring is improved, the test period is shortened, the test result proves the maximum depth of a slope erosion gully and the change rule of the sand yield with time, discloses the relation between the water flow erosion capacity of catchment behind slopes and the slope length, gradient and time and provides a basis for prediction of the water flow erosion scale and the need of slope protection and reinforcement. The device is simple in structure, convenient to operate and suitable for measurement of soil mechanics parameters of slope soil mass.

Separator, fuel cell device and temperature control method for fuel cell device are provided. The sectional areas S₁ to S₄ of thermal radiation fins are determined by the magnitude of the widths w₁ to w₄, since the thermal radiation fins have the same thickness t. The thermal radiation fins are provided in the condition where the widths w₁ to w₄ of the thermal radiation fins are so regulated that the sectional area S₁ of the thermal radiation fin is the smallest and that the sectional areas S₂, S₃ and S₄ are reduced in this order. In other words, the quantities of heat radiated are regulated according to the sectional areas S₁ to S₄ of the thermal radiation fins and it is possible to reduce the temperature gradient in a power generation unit with respect to the lamination direction, and to keep substantially uniform the temperature of the power generation unit. This makes it possible, in a power generation unit having a stack structure, to suppress dispersions in the temperature of the power generation unit along the lamination direction of power generation bodies and separators, and to keep uniform the temperature of the power generation unit.

A process for recovering Li from used Li-ion battery by ion sieve includes dissolving the Li-ion battery in acid, adsorbing the Li ions by lambda-MnO2 ion sieve, and eluting Li ions out by diluted hydrochloric acid solution. Its advantages are high recovery yield and purity, and environmentally friendly.

The invention discloses a co-production system and a co-production method for biomass carbon, gas, wood tar and wood vinegar. The co-production system comprises a biomass dry distillation kettle, a high-temperature heating furnace, a water cooling device, a washing device, a liquid separation device, a gas storage tank, a water-ring vacuum pump, a compressor, wood tar storage tank and a wood vinegar storage tank, wherein the liquid separation device separates wood vinegar and wood tar in the mixed liquid obtained by gas-liquid separation of the water cooling device; the co-production method comprises the following steps: 1, charging; 2, high-temperature carbonization: water cooling and gas-liquid separation, washing, gas storage and separation and storage of liquid matters; and 3, obtaining of the biomass carbon after the high-temperature carbonization. The co-production system for the biomass carbon, gas, wood tar and wood vinegar has the advantages of reasonable design, convenient processing, simple mounting arrangement, easy operation and good effect; and the co-production method has the advantages of convenient realization, high yield, low cost, fast co-production and relatively high production purity and has obvious economic and social benefits and wide popularization and application prospect.

The invention discloses an electric automobile battery module thermorunaway safety fire extinguishing system. The electric automobile battery module thermorunaway safety fire extinguishing system comprises battery cells (9), a housing (8), a liquid storage tank (4), fire protection valves (2), temperature sensors (5), pressure sensors (6), and a controller (1); a plurality of the battery cells (9) are connected in parallel so as to form a battery unit, and a plurality of the battery units are connected in parallel so as to form a battery module; fire-proof materials (7) are arranged in the housing (8) at equal intervals; the liquid storage tank (4) is used for cooling the battery module; the fire protection valves (2) are used for controlling flowing of liquid; the temperature sensors (5) and the pressure sensors (6) are used for monitoring the temperature and gas signals of the battery module, and sending the temperature and gas signals to the controller; and the controller (1) is used for controlling opening and closing of the fire protection valves (2) based on the temperature and gas signals so as to cool the battery module and inhibit battery cell thermorunaway. The invention also discloses a fire extinguishing method using the electric automobile battery module thermorunaway safety fire extinguishing system. The electric automobile battery module thermorunaway safety fire extinguishing system and the fire extinguishing method are capable of inhibiting thermorunaway of the battery module effectively, and are high in automation degree.

The invention belongs to the field of experimental researches on materials, and particularly discloses a slow stretching experimental device with high-temperature high-pressure circulating water and a using method. The device mainly comprises four parts, namely a high-temperature high-pressure circulating water system, a slow stretching loading device, a hydrochemical control system and a loading monitoring system, wherein the high-temperature high-pressure circulating water system can be used for providing a dynamic high-temperature high-pressure water environment; the slow stretching loading device is used for stretching a test sample in a high-pressure kettle at different strain rates; the hydrochemical control system is used for controlling hydrochemical parameters of the high-temperature high-pressure circulating water system; the loading monitoring system is used for regulating and recording a stretch curve of the test sample in the kettle; the test sample in the high-pressure kettle is fixedly arranged on a fixture; the fixture is connected to the upper end of a loading shaft, and an adapter coupling device is connected to the lower end of the loading shaft; a stretching tester is connected to the lower end of the adapter coupling device, and is used for realizing the slow strain rate loading of the test sample. According to the device and the method, the stress corrosion of a material can be tested in a high-temperature high-pressure circulating water environment, and the problems of complex structure, troublesome maintenance and the like in the prior art are solved.

The invention discloses a microfluidic chip based on pneumatic micro pumps and a micro mixer. The microfluidic chip adopts a three-layer structure, a bottom layer is a glass substrate, and a gas drive layer and a liquid flow layer which are made of elastic materials are successively arranged on the substrate; the liquid flow layer comprises a micro mixing chamber, a plurality of micro liquid storage tanks and fluid channels, one end of each fluid channel is connected to the corresponding micro liquid storage tank, and the other end of each fluid channel is connected to the micro mixing chamber; the gas drive layer comprises the micro mixer, a plurality of pneumatic micro pumps and gas channels; externally-added pulse gas pressure is orderly controlled to enter the gas drive layer by an electromagnetic exhaust valve, the pneumatic micro pumps made of the elastic materials and the micro mixer are allowed to work, multiple channels of different solutions are orderly injected into the micro mixing chamber for mixing, so as to realize a purposeful trace chemical reaction. The microfluidic chip can be used for rapid, convenient and accurate realization of automated liquid transport and efficient mixing of a trace liquid, and has important practical significance.

A Hall thruster for use with a condensable propellant including a plasma accelerator including an anode for providing plasma discharge, a distributor for distributing the condensable propellant in a liquid or vaporized state, and an electric circuit including a cathode for emitting electrons attracted to the anode and for neutralizing ion flux emitted from the plasma accelerator. A condensable propellant feed system includes a storage vessel for storing the condensable propellant and providing liquid condensable propellant at a controlled pressure. A condensable propellant flow controller includes a pressure reducing device for controlling the flow rate of the liquid condensable propellant. A vaporizer at or above the vaporization temperature of the liquid condensable propellant vaporizes the liquid condensable propellant at a predetermined vaporization rate and flow rate. A magnetic circuit structure includes a magnetic field source for establishing a transverse magnetic field in the plasma accelerator that creates an impedance to the flow of the electrons toward the anode to create plasma in the plasma accelerator for accelerating ionized condensable propellant through the plasma accelerator to create a flux of ions.

The invention relates to the technical field of quality-divided water purification and supply, in particular to a combined type quality-divided water purification and supply device, the inside of which is formed by three layers of multifunctional quality-divided water purification annular sleeve barrels and a four-layered quality-divided water supply chamber with different functions, wherein the three layers of multifunctional quality-divided water purification annular sleeve barrels respectively contain high-quality direct drinking water of an internal layer, middle-quality domestic water of a middle layer and elementary wash water of an external layer and have different functions; the inner walls of the barrels are provided with small round holes or linear wall slot lines as well as round oblique diversion tunnels of a water-proof backflow round baffle and a vertical water diversion baffle arranged outside the tunnels; an ultraviolet lamp and a most advanced annular filtration barrel component are arranged at the lower bottom part of the middle of the barrel; the upper end and the lower end of the barrel are respectively and fixedly installed in an upper and a lower fixed holding slot components; annular permanent magnetic and tourmaline gaskets are installed at the upper sides of the outsides of the holding slot components; and regulating rings capable of regulating the size and the flow of pores and the water-proof backflow baffles are respectively arranged in a water inlet passage and a water outlet passage of an upper cover shell and a lower cover shell. The invention has unit modular industrialized production, can be assembled on site according to the requirements, has ingenious design and complete functions, low cost and obvious effect, is widely used and is conveniently maintained and changed, all the water is utilized without waste, and filter mediums can be repeatedly used.

The invention relates to a fuel injector for injecting fuel into a combustion chamber, having a solenoid valve for controlling a mini-servo valve. A movable armature can be placed in a sealing fashion on a valve seat in a lower armature chamber, wherein in addition the mini-servo valve is held in an injector body and seals a control line against a flat seat. By means of the flat seat, during an actuation of the solenoid valve, the control line can be relieved of pressure from a high fuel pressure to a return pressure into at least one return line. A mechanism for reducing pressure oscillations are provided in the at least one return line, which includes at least one diaphragm cell which is held in a recess and which is placed in fluidic connection with the at least one return bore. A fuel injector with the mechanism for reducing pressure oscillations is therefore created in the at least one return line which operates without a leakage flow and has a simple and effective function.

The invention discloses a temperature controllable subzero cooling system based on self-pressure cryogenic fluid delivery technique. The system comprises a liquid nitrogen storage tank, a liquid delivery pipe, a liquid injection pipe, a vaporizer, a self-pressure loop, an air delivery pipe, a self-pressure adjusting valve, a liquid injection valve, a safety valve, a manual pressure relief valve, a liquid delivery valve, an air delivery valve, a pressure sensor P1, a three-way pipe, a pressure sensor P2, a data collector, a computer, a subzero cooling treatment chamber top cover, a liquid level meter, an exhaust pipe, a thermometer, a subzero cooling treatment chamber cabinet, a workpiece to be treated, a rack, a supporting structure, a travelling wheel, a perforated baffle, a cooling medium delivery pipe and a subzero cooling treatment chamber. The invention has the advantages of self-pressure cryogenic cooling medium delivery, no need of extra driving source, liquid and air two subzero cooling processes, convenient temperature dropping rate and treatment temperature adjustment and uniform temperature field in the subzero cooling treatment chamber.

The invention relates to a graphene coating aluminum foil coating machine. The machine comprises a base, and an aluminum foil coil, a front tension mechanism, a dust removing mechanism, a transmission mechanism, a vibration mechanism, a coating mechanism, a heating mechanism, a spraying mechanism, a drying mechanism, a back tension mechanism and a storage device arranged on the base; the dust removing mechanism, the transmission mechanism, the coating mechanism and the spraying mechanism are arranged rightly above the section of aluminum foil basal plate in a walking direction of the aluminum foil basal plate; the vibration mechanism and the heating mechanism are arranged below the section of aluminum foil basal plate; the vibration mechanism is perpendicular and corresponding to the coating mechanism and the spraying mechanism; and the heating mechanism is perpendicular and corresponding to the spraying mechanism. The machine is uniform in obtained product coatings, tight in contact with aluminum foil substrates, stable in performance, high in continuity of whole coating process and high in machining efficiency.

The invention discloses a method for recycling of soybean whey wastewater by a membrane separation technology. The method includes: sterilization pretreatment; flocculation and centrifugal separation for impurity removal; whey protein recovery by ultrafiltration membrane continuous separation; whey protein powder recovery; oligosaccharide syrup recovery by nanofiltration membrane continuous concentration; oligosaccharide recovery; and dialysis water recovery by reverse osmosis membrane continuous concentration. The method provided in the invention can avoid whey wastewater rancidity and ultrafiltration membrane pollution and plugging, and improves the product quality. Employment of the continuous separation concentration mode reduces stay of intercepted objects or protein, impurity concentrated liquors in a membrane assembly to the utmost, and back-and-forth circulation between a membrane liquid inlet tank and a membrane system no longer exists. Meanwhile, the membrane surface flow speed is controlled, so that the problems of membrane pollution and low separation efficiency are solved. An osmosis filtration membrane washing process is adopted, and water is added automatically for filter wash, so that the membrane pollution and plugging problems are solved, and the product quality is improved. The selection of high temperature resistant hydrophilic membrane materials guarantee a high water flux and help to reduce membrane pollution.

The invention discloses a method for continuously preparing azo dye in micro-reactors in the field of dye synthesis. The azo dye is prepared by firstly subjecting a sodium nitrite solution, an aromatic primary amine and an inorganic acid to a diazotization reaction at room temperature in a first micro-reactor to generate an aromatic primary amine diazonium salt; and then subjecting the aromatic primary amine diazonium salt and a coupling component to a coupling reaction in a second micro-reactor to generate the azo dye. Continuous preparation of the azo dye is achieved by utilizing the micro-reactors, a process is simple, a reaction period is short, and a reaction process can be easily monitored and controlled. Addition of an excessive amount of the sodium nitrite and the coupling agent to increase the reaction speed is not required so that raw materials are saved and the method is environmentally friendly. Reaction liquid in the micro-reactors achieves high-speed collision mixing, a uniform reaction environment is formed immediately, the reaction efficiency is high, and the yield and quality of a reaction product are greatly improved.

The invention discloses an infusion set flow rate controller, belonging to the technical field of auxiliary medical appliances. The infusion set flow rate controller comprises a shell (2), a load-bearing plate (3) and a thread extrusion mechanism, wherein the load-bearing plate (3) and the thread extrusion mechanism are fixedly installed on the shell (2); and a clearance for placing an infusion set hose (1) is arranged between the load-bearing plate (3) and the thread extrusion mechanism. The distance between the thread extrusion mechanism and the load-bearing plate can be adjusted by the thread extrusion mechanism, thereby implementing control on extrusion strength of the infusion set hose. The thread extrusion mechanism can implement accurate adjustment, and thus, can implement accurate control on the flow rate of the liquor in the infusion set. In addition, the invention has the advantages of simple structure and low manufacturing cost, and is applicable to flow rate control on any existing infusion set.

The invention relates to waterless stemming and a preparation method thereof. The waterless stemming is a fireproof, corrosion-resistant, washing-resistant and wear-resistant material for blocking an iron notch and filling iron notch gaps and cracks having various shapes. The waterless stemming has the advantages that 1, the waterless stemming does not yellow, does not produce black smoke, reduces benzpyrene content to a value less than 0.01% and has good filling performances, contractibility and sintering properties, 2, strength is high and stable blast furnace conditions are kept, 3, iron is produced stably, the iron notch can be opened easily, the pore is not broadened, melt iron flow and flow velocity can be effectively controlled, and strong slag resistance, erosion resistance and washing resistance are obtained, 4, the hearth is protected, crack is not produced in fast heating and high bonding strength of novel and old stemming is high, 5, opening performances are good and a boring process can be carried out easily by a tapping machine drill bit, 6, plasticity is good and clay gun operation and iron notch mud drum formation are convenient, and 7, a certain micro-expansion performance is obtained at a high temperature, gas permeability is good, strength is high and molten iron seepage caused by stemming contraction is avoided.

The invention relates to a rock micromechanics testing device and in particular relates to a rock biaxial compression micromechanics testing device under stress-water current-chemical coupling actions, belonging to instruments and equipment. A lateral loading shaft is additionally arranged in the testing device, so that the loading mode of uniaxial compression in the existing testing device is improved. A vertical partition plate is additionally arranged in a box body and divides the box body into two independent parts, wherein one part serves as a test chamber for testing, and the other part serves as a working chamber for lateral loading. A water inlet and a water outlet are matched with the test chamber and can control a stable water current to be formed in the test chamber. The height of the box body can be adjusted by additionally arranging horizontal adjusting bolts to ensure that the box body is always in a horizontal state. The device can achieve biaxial compression loading on rock samples and control the flow velocity of chemical solutions so as to achieve biaxial compression tests on rocks under the condition of actions of different chemical solutions, is reasonable in design, is convenient to operate and use, and is suitable for biaxial compression tests of various rocks under stress-water current-chemical coupling actions.

The invention discloses preparation and application of a simple high-throughput microfluidic chemiluminescence paper chip. A plurality of microfluidic chemiluminescence paper chips are printed in batches on B5 plain filter paper by using a full print mode. The printing process comprises batch printing of hydrophobic wax patterns, melted wax molding, bath printing of chemiluminescence reagent ink patterns, batch printing of oxidase ink patterns, bath printing of flow rate adjusting hydrophobic wax patterns, laser cutting of microfluidic chemiluminescence paper chips, and plastic sealing treatment of the prepared microfluidic chemiluminescence paper chips. A field test method of the microfluidic chemiluminescence paper chip comprises the following steps: placing the plastic-sealed microfluidic chemiluminescence paper chips in a cassette of a palm light emitting testing instrument; dropwisely adding a sample solution to a sampling area; closing a cassette cover, and starting testing. The existence and contents of 32 kinds of tested components are determined by the sizes of 32 successively appearing chemiluminescence peak values.

The invention relates to a casting method of large-scale high pressure resisting multi-cylinder-block cast. The method includes the following steps: (1) mold making, (2) sand mold making, and (3) casting molding: during the sand mold making of the step (2), a sprue is designed into a first sprue (1) and a second sprue (3), a cross gate is designed into a first cross gate (2) and a second cross gate (4), and an ingate (5) is designed into a plurality of parallel pouring gates. Cross section area of all pouring gates is set as the following relation: the cross section area of the first sprue (1) is larger than that of the first cross gate (2), the cross section area of the first cross gate (2) is smaller than that of the second sprue (3), the cross section area of the second sprue (3) is larger than that of the second cross gate (4), and the cross section area of the second cross gate (4) is smaller than that of the ingate (5). The casting method overcomes the defects that shrinkage cavities, shrinkage porosities, slag inclusion and the like do not exist in the cast and can meet quality requirements that cylinder holes can be used as cylinder inner walls after the cylinder holes are machined.

A device of purifying waste gas of garbage ¿C burning is prepared as setting smoke inlet at top end of cooling tower; setting water spraying nozzle opposite to flowing direction of smoke; setting S form flue pipe between cooling tower bottom and top of bag ¿C type collector; setting lime powder inlet at bottom section of said flue pipe, iron fly ash inlet at middle section of said flue pipe and activated carbon inlet at top section of said flue pipe; setting filter material layer in bag ¿C type collector and setting purified gas outlet at top side of bag ¿C type collector.

The invention relates to the exhaust gas recovery field in the viscose fiber industry, and provides a device for recovery of carbon disulfide in viscose fiber production. The device is characterized in that: it comprises an alkali spray tower, an absorption tower, a heat exchanger, a desorption tower, a condenser and a gas-liquid separator. The spray tower is connected to the absorption tower, the absorption tower is in connection with the heat exchanger, the heat exchanger is connected to the desorption tower, the desorption tower is connected to the condenser, which is in connection with the gas-liquid separator. The device provided in the invention has the characteristics of simple structure, high absorption rate, low investment and operation cost, and suitability for industrialized application.

The invention relates to the technical field of educational toys, and particularly discloses a robot with a sterilizing device. The robot with the sterilizing device comprises a robot cavity and a motor, wherein a sterilizing device is arranged in the robot cavity and comprises a disinfectant storage chamber; a motor is rotatably connected with a stirring column; the stirring column is provided with stirring blades and a cam; a piston cylinder is arranged on the right side of the cam; a piston and a piston rod is arranged in the piston cylinder; the other end of the piston rod is attached to the outline of the cam; the piston cylinder is further provided with a one-way air inlet valve and a one-way air outlet valve; the one-way air outlet valve is connected with an air bag; a box body is arranged on the outside of the air bag; an automatic valve is arranged at an outlet of the air bag; a control mechanism for the automatic valve is arranged on the inner wall of the box body; the automatic valve is connected with a venturi tube; a throat portion of the venturi tube communicates with the disinfectant storage chamber through a suction tube; and an outlet of the venturi tube is connected with a sprayer through a pipe. The invention aims to solve the problem that bacteria on the surface of the robot can infect a user.