133results about How to "Stability and security" patented technology

The invention discloses an inorganic/organic composite functional porous isolating membrane. The isolating membrane comprises porous base material and at least one inorganic functional coating adhering to the surface of the porous base material, and aqueous slurry prepared for the inorganic functional coatings is prepared from inorganic ceramic particles, water-soluble polymer thickener and aqueous polymer adhesive; the inorganic ceramic particles comprise the same substance in two types of particle sizes, wherein the average particle size (D50) of the smaller inorganic ceramic particles is 0.2-0.5 micrometer, and the average particle size (D50) of the larger inorganic ceramic particles is 0.6-1.0 micrometer; the aqueous polymer adhesive is a hydrophobic high-molecular polymer with the water drop contact angle of the dry adhesive of the aqueous polymer adhesive 110-140 degrees; the solid content of the aqueous slurry is 40-60%. According to the inorganic/organic composite functional porous isolating membrane, the high-temperature thermal stability of the isolating membrane can be effectively improved by means of the inorganic functional coatings, and the water content of the inorganic coatings is effectively reduced, so that the safe performance of a battery and the stability of long-term circulation are improved.

The invention relates to a pressure sintering furnace used for producing hard alloys. The pressure sintering furnace comprises a furnace shell, a vacuum system, an air distribution system, a heating and thermal-insulating device, a compression system, a cooling system and a decompression device. The pressure sintering furnace is characterized in that the furnace shell is a horizontal cylinder provided with a double-wall water jacket, the furnace door on the furnace shell has a quick-opening hydraulic side-rotating structure, the furnace door of the furnace shell comprises a thermal-insulating door on the external layer of the furnace and a graphite door on the internal side of the furnace, the opening of the furnace door is controlled by a hydraulic locking device with a door-closing air cylinder, the door-closing air cylinder is provided with an elastic coupling device, and the thermal-insulating door of the furnace door is a boss thermal-insulating door. The pressure sintering furnace has stable performance and low cost and safety production can be realized by using the pressure sintering furnace, thus the uniformity of temperature field distribution in the furnace can be effectively improved and the qualification rate of products can be more than 90%.

The invention relates to a direct expansion type mine return air source heat pump system and an operation method thereof. The direct expansion type mine return air source heat pump system comprises a diffusion tower which is arranged at a mine return air source outlet, wherein an air outlet is formed in the top of the diffusion tower; an external gas-liquid heat exchanger is arranged on the upper part of the air outlet and is filled with a refrigeration working medium; a plurality of heat pump machine sets are arranged in a heat pump machine set unit; each heat pump machine set comprises an internal heat exchanger, a compressor with a reversing valve and an expansion valve; the external gas-liquid heat exchanger is connected with a shell pipeline of the internal heat exchanger through the compressor and the expansion valve to form a refrigeration working medium heat exchanging circulation pipeline; and both ends of a heat exchanging pipeline in the internal heat exchanger are connected with a water inlet and a water outlet of a user equipment unit respectively to form a user heat exchanging circulation pipeline. The system is operated in a heating mode and a refrigerating mode by switching the reversing valve on the compressor. The direct expansion type mine return air source heat pump system can supply heat to coal mine building heating in winter, living hot water and wellhead freezing protection, supplies cold capacity to summer air conditioning and has effects of energy conservation and emission reduction.

The invention discloses an electric control closed type hydraulic steering system and a vehicle having the system. The hydraulic steering system comprises a hydraulic steering device, a variable pump and a controller, wherein the hydraulic steering device comprises a power-assisted steering cylinder; the variable pump is used for directly supplying hydraulic oil to the power-assisted steering cylinder through a main oil path; an output flow of the variable pump and a direction of the oil path are controlled by an electric signal; and the controller is in signal connection with the variable pump and is used for calculating the output flow of the variable pump and confirming the direction of the oil path according to the working condition of the vehicle and a steering requirement signal of a wheel and accordingly outputting the electric signal used for controlling the variable pump. According to a pump-control-cylinder principle, the steering closed type hydraulic control of the vehicleis realized by the hydraulic steering system. The hydraulic steering system is used for supplying a hydraulic power according to a steering requirement and fully utilizing an output power of an engine or a transmission element thereof, thereby meeting an energy-saving requirement, reducing system elements, being beneficial to optimizing and lightening the configuration of the vehicle and being suitable for the steering control of various engineering mechanical vehicles or special vehicles.

The invention discloses an emergency cardiopulmonary resuscitation apparatus, comprising a bed plate, a presser rod, an elastic balloon, a presser sucker and a controller. Slide rails are arranged ontwo sides of the bed plate; two telescopic support rods are arranged on the bed plate; a slider is arranged at the bottom of each telescopic support rod; the sliders are used with the slide rails; each telescopic support rod is provided with an L-shaped sleeve, and the telescopic support rod is nested in one end of the corresponding L-shaped sleeve; a horizontal rod is nested in the other end of each L-shaped sleeve; a motor box is fixed between the two horizontal rods; a battery and a servo motor are arranged in the motor box; an output shaft of the servo motor is connected with a cam; a roller is arranged below the cam; the presser rod is connected to the bottom of the roller; the presser rod is sleeved with a buffer spring and is connected with the presser sucker through the elastic balloon. The emergency cardiopulmonary resuscitation apparatus is simple in structure, widely applicable, convenient to carry and safe to use, and can save energy for emergency department doctors.

The invention provides a three-dimensional composite current collector and a preparation method thereof. The three-dimensional composite current collector provided by the invention comprises a copper foil base layer and a lithium battery negative electrode lithium-philic material coating coated on the copper foil base layer, wherein the lithium battery negative electrode lithium-philic material coating comprises a plurality of micron-sized three-dimensional spherical structures, and the lithium battery negative electrode lithium-philic material is composed of a carbon material, a lithium-philic metal oxide, a binder and a lithium salt. The preparation method comprises the following steps: firstly, preparing lithium battery negative electrode lithium-philic material slurry, then coating a copper foil base layer with the slurry to form a lithium battery negative electrode lithium-philic material coating, and preparing the lithium battery negative electrode three-dimensional composite current collector. According to the lithium battery negative electrode lithium-philic material, a copper foil is coated with a composite coating with a micron-sized three-dimensional spherical structure, so that the current density of a lithium metal negative electrode can be effectively reduced, the generation of lithium dendrites is effectively relieved and reduced, and the cycle performance and the safety performance of a lithium metal battery are improved.

The invention relates to a control method of a photovoltaic LCL type grid-connected inverter. The control method is characterized by comprising the steps of: considering that a photovoltaic LCL type grid-connected inverter system has input uncertainty faults and actuator faults, establishing a fault mathematical model, and setting a fixed control distributive law; establishing a system state high-order sliding-mode observer and state estimation errors thereof according to the fault mathematical model, and adopting the high-order sliding-mode observer for realizing accurate estimation of system fault information; and constructing a continuous integral sliding-mode fault-tolerant controller mathematical model according to the fault mathematical model, the fixed control distributive law, the high-order sliding-mode observer and the state estimation errors thereof, wherein the continuous integral sliding-mode fault-tolerant controller mathematical model is used for processing the actuator faults directly. The control method is reasonable in design, can realize stable control under parameter uncertainty faults and actuator faults, and exhibits good tracking performance and fault tolerance. The control method provides a new idea for the design of a large-scale photovoltaic LCL type grid-connected inverter control system, and has a good engineering application prospect.

The present invention develops a method of heating phase-change material heat reservoir by a PTC thermistance and uses PTC thermistance (positive temperature coefficient thermistance) with the property of temperature sensibility; when the PTC thermistance excess a certain temperature, the resistance value of the PTC thermistance increases by step phase to resist current to pass through, thereby achieving the aim of stopping the phase-change material heat reservoir. The phase-change material heat reservoir is positioned on the upper part of the PTC thermistance heater; the power supply of the PTC thermistance is switch on to heat the phase-change material heat reservoir; the power supply of the PTC thermistance is cut off till the external temperature display of the phase-change material heat reservoir reaches the predetermined temperature. The phase-change material heat reservoir is moved to the lower part of the object which need to heat; the phase-change material in a container is changed to a solid state from a liquid state after heat release to achieve the aim of heating objects. The invention solves the problem that the heating temperature of the phase-change material heat reservoir keeps between the melting point temperature and the boiling point temperature of the phase-change material, thereby ensuring the safety of use and enlarging the using range of the phase-change material heat reservoir.

The invention provides a cathode material precursor which is of a core-shell structure. The material chemical formula of the core is Ni<1-x-y-z>Co<x>Al<y>Mn<z>(OH)2, and the material chemical formulaof the shell is Ni<1-r-s>Co<r>Mn<s>CO3, wherein 1-x-y-z is a value in the range of 0.80 to 0.96, x is greater than 0, y is a value in the range of 0.01 to 0.10, z is a value in the range of 0.01 to 0.10, 1-r-s is a value in the range of 0.34 to 0.70, r is greater than 0, and s is a value in the range of 0.20 to 0.40. The cathode material of the invention has a stable structure, high safety performance, long cycle life and good thermal stability.

The invention discloses large radial gate lifting equipment comprising a bridge erecting machine provided with a loading and unloading channel, wherein the top of the bridge erecting machine is provided with a lifting trolley which a stretches across the loading and unloading channel and can move along the loading and unloading channel, the lifting trolley is provided with a winch, and the winch is arranged above the loading and unloading channel. The large radial gate lifting equipment disclosed by the invention can conveniently realize the lifting of a large radial gate of a dam; and the stability and safety of a lifting process are guaranteed. The invention also discloses a lifting method adopting the large radial gate.

The invention discloses an assembled type waterproof power distribution cabinet with an automatic temperature control function. The assembled type waterproof power distribution cabinet comprises a base, a cabinet body and a top cover; a concave sliding groove is formed in the base; convex beams and pulleys are arranged on the bottom edges of three cabinet bodies relatively; matched hasp locks are arranged on the adjacent framework vertical columns and cross beams of the first cabinet body and the second cabinet body, and the adjacent framework vertical columns and cross beams of the second cabinet body and the third cabinet body respectively; bent telescopic sleeve pipes are also adopted on the top parts of the adjacent cabinet bodies to form sealed electric wire and cable channels; each cabinet body is also provided with an air inlet, an air outlet, a heat dissipation apparatus and an automatic control apparatus; and the V-shaped top cover can be stably embedded and inserted in clamping grooves formed in the top parts of the first cabinet body, the second cabinet body and the third cabinet body. The power distribution cabinet can be assembled onsite, so that the size of the single cabinet body can be reduced, and the power distribution cabinet is convenient to transport and high in stability after assembling; therefore, integration in form is realized while circuit interconnection is also achieved; and in addition, the power distribution cabinet is excellent in waterproof and heat dissipation functions, and convenient and flexible to use.

The invention discloses a high voltage electrical cabinet with an efficient heat dissipation function. The high voltage electrical cabinet includes a box body, the bottom of the box body is fixedly connected with a bottom plate, the top of the bottom plate is fixedly connected with a motor box at one side of the box body, the bottom of an inner wall of the motor box is fixedly connected with a first motor through a support frame, one side of the bottom of an inner wall of the box body is fixedly connected with a support plate, and one side of the support plate is movably connected with an elliptical plate. The invention relates to the technical field of high voltage electrical cabinets. According to the high voltage electrical cabinet with an efficient heat dissipation function, one end ofa slide bar, which extends to the top of a top plate, is fixedly connected with a slide plate, an air cooler discharges cold air into the electrical cabinet, high temperature generated when electrical cabinet works is cooled, thereby improving using safety of the electrical cabinet, and the bottom of the box body is fixedly connected with the bottom plate, so that cold air inside the electrical cabinet is in a circulating state, thereby improving the speed of cooling, and greatly stabilizing safety of the electrical cabinet.

The invention relates to a micro-fuse which comprises a melting part, two electrode parts, a seat body and a cover body, wherein the melting part is provided with a column body surrounding a melting wire body to form a surrounding melting wire; one end of the electrode parts is provided with two ring bodies with closed end parts and bearing and fixing surfaces; the seat body is provided with through holes for the two electrode parts to pass through, the upper end of the seat body is provided with a bearing platform, sides of the seat body are provided with buckling rings, the lower end of the seat body is provided with a positioning block; and the cover body is buckled on the seat body to form a close space. The invention also relates to a fabricating method of the micro-fuse, which comprises the following steps: providing the seat body, arranging the two electrode parts in a penetrating way; forming planes and the bearing and fixing surfaces at the end parts of the two electrode parts, and bending through hole grooves to form the two ring bodies, wherein the inner ring body is pressed and fixedly connected to the inner side of the melting part, the outer ring body is welded and fixedly connected to the end part of the melting part; bearing the melting part by the bearing platform at the upper end of the seat body; and forming the close space by the cover body correspondingly covering the seat body. The micro-fuse has high yield, high quality and high safety.

The invention provides a displaying method. First touch information is obtained from a first outer surface, or second touch information is obtained from a second outer surface. When the first touch information meets a first preset condition, first touch information response is carried out, and second content is displayed. When the second touch information meets a second preset condition, second touch information response is carried out, and second content is displayed. At least parts of the first preset condition and the second preset condition are the same, so that the same results are obtained when similar operations are carried out on different surfaces of electronic equipment, and the purpose that when a user carries out matched or identical touch operations on two touch screens of the electronic equipment, the same operation results can be generated is achieved. When the user holds the electronic equipment by hand, the back face of the electronic equipment is used as the second outer surface, the user can use the index finger or the middle finger of one hand for carrying out the touch operation on the back face of the electronic equipment, and the operation results of the same operations carried out on the first outer surface on the front face of the electronic equipment are obtained.

The invention discloses staphylococcus epidermidis and an application thereof in production of a fermented meat product. The invention also provides a starter prepared from the staphylococcus epidermidis and an application thereof in meat product fermentation. The meat product fermented by the staphylococcus epidermidis disclosed by the invention has good flavor, and the product has stable quality without peculiar smell while the chromophoric effect is good.

The invention discloses a geriatric rehabilitation exercise device. The geriatric rehabilitation exercise device comprises a base, wherein the left side of the top part of the base is fixedly connected with a substrate; a leftward position of the top part of the substrate is fixedly connected with a backrest plate; the right side of the top part of the substrate is fixedly connected with a seat; handrail stands are arranged at two sides of the seat. According to the geriatric rehabilitation exercise device disclosed by the invention, different using demands of a user can be met, the practicability is stronger, the back of the user can be pressed, and meanwhile, different positions of the back of the user can be massaged, so that the comfort level of using exercise equipment can be increased, the back fatigue of the user can be relieved, the back of the user can be fully in contact with the backrest plates under the action of a safety belt, the straightness of the back of the user can be increased, meanwhile, the compactness during massaging can be increased, and convenience is provided for the user to force; the geriatric rehabilitation exercise device is simple in structure and convenient to use, is more energy-saving and environment-friendly, is more convenient for the aged having difficulty in walking to do aerobic exercise, and the obstacle in walking of the aged having difficulty in walking is reduced.

A lithium metal negative electrode material, a preparation method and an application thereof are disclosed. The method includes: S1, preparing a high-molecular polymer, wherein the high-molecular polymer is obtained by free radical polymerization of a monomer A and a monomer B, the monomer A is selected from acrylonitrile or a derivative thereof, and the monomer B is selected from polyethylene glycol acrylate; S2, dissolving the high-molecular polymer in an organic solvent to obtain a paste; S3, applying the paste to a current collector and vacuum-drying the current collector at 30-60 degreescentigrade for 5-12 hours to obtain a modified current collector; and S4, depositing metal lithium on the modified current collector to obtain a lithium metal negative electrode material. The invention also provides a lithium metal negative electrode material prepared by the method and the use as a lithium metal battery negative electrode in a lithium metal secondary battery. By coating the surface of the current collector with the high-molecular polymer, the method can prevent a reaction between the electrolyte and the lithium metal, induces the uniform deposition of lithium ions, and improves the coulomb efficiency and the cycle performance of the lithium metal battery.

The invention relates fire retardant antistatic plastic false top wire for coal mine, characterized in that it uses plastics as raw material, adds certain amount of fire retardant chemical, antistatic agent and conductive charcoal black according to the proportion as follows: plastics raw material 85-90%, fire retardant chemical 5-7%, antistatic agent 1-2%, and conductive charcoal black 4-6%, mixes them to extrude and mold once. The advantages of the products include fire-retardant, antistatic corrosion resistance, acid base resistance, high mechanical strength, primary product molding, etc.

The invention provides a novel high-capacity power nickel-metal hydride battery and belongs to the technical field of new energy source batteries. The nickel-metal hydride battery comprises a battery group, a fixing plate, a battery negative electrode bus bar, a battery positive electrode bus bar and supporting columns; the battery group is formed by combining a plurality of cylindrical power nickel-metal hydride batteries in parallel; the two ends of the cylindrical power nickel-metal hydride batteries are inserted into the fixing plate; negative electrodes of all the cylindrical power nickel-metal hydride batteries are welded on the battery negative electrode bus bar; positive electrodes of all the cylindrical power nickel-metal hydride batteries are welded on the battery positive electrode bus bar; the two ends of the supporting columns are fixed on the fixing plate respectively; and the quantity N of the supporting columns is more or equal to 2. The novel high-capacity power nickel-metal hydride battery provided by the invention has the properties of simple and reasonable structure, high automation degree of production and the like.

A second-generation identity card printing equipment comprises a shell, a circuit plate mounted in the shell, a recognition and reading unit, a main control unit, a printing control unit and an interface unit. The main control unit is respectively connected with the recognition and reading unit, the printing control unit and the interface unit. Identity information of a second-generation identity card is recognized and read through the recognition and reading unit, the read identity information is subjected to data processing by the main control unit, the printing control unit sends out printing instruction after the identity information is processed, the printing equipment prints the identity information, and the processes are completed simultaneously, so that working efficiency is greatly improved, operation is convenient, and safety performance is stable. Induction-type data reading is adopted, so that mechanical abrasion is avoided, and the service life is prolonged.

The present invention provides an anode material precursor. The anode material precursor comprises a core-shell structure, the material chemical formula of the core is Ni1-x-y-zCoxAlyMnzCO3, the material chemical formula of the shell is Ni1-r-sCorAls(OH)2, (1-x-y-z) is a value in the range of 0.80- 0.96, x is greater than 0, y is a value in the range of 0.01-0.10, z is a value in the range of 0.01-0.10, (1-r-s) is a value in the range of 0.34- 0.70, r is larger than 0, and s is a value in a range of 0.20-0.40. The anode material is stable in structure, high in safety, long in cycle life and good in thermal stability.

The invention mainly relates to the technical field of steel structure processing, and discloses a wear-resistant tensile steel wire rope preparation method, which includes the following steps: (1) selecting raw materials; (2) surface derusting; (3) preparing carbon steel wire: A. hot zinc plating; B. primary wire drawing; C. heating; and D. secondary wire drawing; (4) preparing alloy steel wire: A. primary wire drawing; B. heating; C. secondary wire drawing; and D. hot aluminum plating; (5) stranding: A. inner steel wire; and B. outer steel wire; and (6) rope closing. According to the wear-resistant tensile steel wire rope preparation method, the prepared steel wire rope has high tensile strength, strong flexibility and wear resistance, and can be widely used in different environments, so that the method reduces the selection of multiple steel wires in different environments, and is simple and convenient; carbon steel and alloy steel are selected as raw materials of the steel wire rope at the same time to improve the applicability of the steel wire rope to different environments; and after raw materials are selected, a rust removal liquid is used to remove rust for the carbon steel and the alloy steel respectively, which can facilitate post-treatment and avoid mechanical damage.

The invention discloses a cured plane-interlocking stereo-stacking engineering block and a production method thereof. The cured plane-interlocking stereo-stacking engineering block comprises left bank convex blocks, left bank concave blocks, right bank convex blocks, right bank concave blocks and liner strips. One left tank concave block is laid above two left tank convex blocks through first extension projections and fourth extension projections; one right bank concave block is laid above two right bank convex blocks through sixth extension projections and seventh extension projections; solid waste accounts for 80wt% of raw materials, and water accounts for 5wt%. The cured plane-interlocking stereo-stacking engineering block and the production method thereof have the advantages that the block has the functions of plane interlocking and stereo stacking; plane interlocking makes sure that the blocks laid on the surface of a block slope protection cannot scatter; the solid waste reaches 80% of the raw materials, production cost is low, production efficiency is high, and energy consumption is low; automatic yield is high, and profit of enterprises is high.