40results about How to "Not limited by size" patented technology

Membrane electrode is composed of secondary unit and main unit possessing function of high temperature and molding moisture. Secondary unit is a gaseous diffusion layer, and the main unit is prepared by binding gaseous diffusion layer, catalyst layer, and inorganic Nano particles to proton exchange layer. The preparation method includes following steps: coating pulp of catalyst on gaseous diffusion layer to prepare catalyst layer; casting inorganic Nano particles and resin solution of proton exchange to prepare inorganic Nano particles layer and proton exchange layer; then coating pulp of catalyst again to prepare catalyst layer. Membrane electrode is obtained by cold contact between main unit and secondary unit, or hot pressing the two units. Features are: suitable to continuous production, controllable thickness of proton exchange layer, high binding intensity between layers, low contact resistance, operatable under high temperature.

The invention discloses a semi-transparent dielectric material photo-thermal character measuring system and method. The measuring system is composed of a computer, a two-dimensional mobile platform, a support, a small off-axis paraboloidal mirror, a collimating lens, an optical fiber, a semiconductor laser, a large off-axis paraboloidal mirror, a power line, a laser power source, an HCT thermal detector, a BNC data line, a pre-amplifier, a laser control line, a phase-lock amplifier, a phase-lock amplifier control line and a data collecting signal line. According to the measuring method, based on the photo-thermal radiation measuring principle, the computer is adopted to control a function generator to generate a modulating signal, the signal controls the laser to enable the light intensity of the laser to change according to a modulating law, after the modulated changed laser is radiated to a sample piece, due to the existence of a photo-thermal effect, the temperature rise and fall and the infrared radiation of the sample piece occur, a photo-thermal radiation signal is correlated to a photo-thermal character parameter of the sample piece, the signal is received by the HCT thermal detector, and then the photo-thermal character parameter of the sample piece is extracted through an arithmetical operation. The semi-transparent dielectric material photo-thermal character measuring system and method can achieve the complete zero damage, non-contact and high-efficiency measurement of materials.

The invention provides a method for simulating an external heat flow of a light inlet of a high-altitude large-aperture optical remote sensor. An absorption heat flow method based on an electric heater instead of an incident heat flow method based on a solar simulator is adopted. An economic, economic, high-realizable simulation method is provided for space heat flow simulation of a large-aperture optical remote sensor. An electric heater can be directly attached to a component provided with a radiant heat flow. Requirements of optical remote sensors with different apertures can be met and are not limited by the spot size of the solar simulator and the size of a vacuum environment simulation chamber. The problem of space heat flow simulation of a shade of a high-altitude large-aperture optical remote sensor is solved. The method is simple and effective, and is high in engineering realizability.

The invention relates to a radiating modular structure of a semiconductor package and a manufacturing method. At least one semiconductor semiconductor package comprising a chip carrying piece, a semiconductor chip arranged on the chip carrying piece, and a first radiating piece arranged on the semiconductor chip is provided, so that the semiconductor package is electrically connected to an external electronic device through the chip carrying piece; and then at least one second radiating piece is arranged on the first radiating piece of the semiconductor package, and the size of the second radiating piece is larger than that of the first radiating piece; therefore, the semiconductor package, the first radiating piece, the external electronic device and the second radiating piece are combined in a modular mode to improve the radiating efficiency of the semiconductor package.

The invention discloses a method for measuring flux of a magnetic element and a device thereof. The magnetic element to be detected is placed into Helmholtz coils. A magnetizing direction of the magnetic element to be measured is in the axial direction of the Helmholtz coils, and furthermore the magnetic element to be measured is arranged at right central part between a first coil and a second coil. After a flux meter is reset, the magnetic element is overturned for 180 DEG through an overturning mechanism and is kept still. An output value of the flux meter is read as a flux value of the magnetic element to be measured, thereby obtaining the flux value of the magnetic element to be measured. The method of the invention is advantageous in that: in the measurement process, defining of the magnetic field area of the Helmholtz coils is not required; and the flux value can be measured through overturning the magnetic element for 180 DEG by the overturning mechanism. Simple operation, low labor intensity and relatively high measurement efficiency are realized. The overturning mechanism can ensure same measurement condition and position of each magnetic element to be tested. Relatively high repeatability and high accuracy of the measured data are realized. Furthermore the method is not limited by the volume of the magnetic element.

The invention discloses a novel prefabricated direct-buried polyurethane spraying heat-preservation pipe production line. The production line is composed of a flame preheating furnace, a shot blastingderusting machine, a pipe-inside blowing sweeping device, a polyurethane spraying system, a polyurethane layer rounding device, a polyurethane curing platform, a polyethylene winding system, a coating cooling system and a pipe end treating device which are arranged in proper sequence. The invention further discloses a novel prefabricated direct-buried polyurethane spraying heat-preservation pipeproduction process which comprises the steps of preheating, shot blasting, blowing sweeping, polyurethane spraying, rounding, curing, polyethylene layer winding, coating cooling and pipe end treating.By means of the novel prefabricated direct-buried polyurethane spraying heat-preservation pipe production line and the production process, the problems of uneven internal density, more cavities and detection difficulty of a polyurethane layer in existing heat-preservation pipe fabrication utilizing a pipe-in-pipe process are solved.

The invention discloses efficient graphene roll-to-roll continuous growth equipment and a preparation method. The graphene roll-to-roll continuous growth equipment comprises a feeding cabin (3), a growth cabin and a receiving cabin (4), wherein the feeding cabin (3) is provided with more than two driven rollers (8), the receiving cabin (4) is provided with more than two driving rollers (9), an isolation support plate (11) is arranged in the growth cabin, the isolation support plate (11) divides the growth cabin into more than two growth chambers, the growth cabin comprises a graphene growth area, and the graphene growth area is provided with a heating device. The graphene preparation method provided by the invention comprises a step of simultaneously placing a plurality of metal substrateson a plurality of driven rollers (8) and a driving roller (9), and a step of setting the driving roller to be the same or different. The equipment and the method disclosed by the invention have the advantages of high quality, good consistency, no size limitation and the like of graphene prepared by the existing equipment, the production efficiency of graphene is further improved, and the energy consumption for preparing graphene per unit area is reduced.

The invention belongs to the technical field of photoetching, and particularly discloses a grid plate design method of an air bath device, a grid plate, the air bath device and a photoetching machine.The grid plate design method provided by the invention comprises the following steps: S1, determining initial design parameters of a grid plate, wherein the grid plate comprises a plurality of grids;S2, establishing a fluid simulation model of the air bath device according to the design parameters; S3, calculating to obtain fluid data of a fluid outlet; S4, judging whether the fluid data meets apreset condition or not, if yes, executing S5, and if not, executing S6; S5, adjusting the ventilation area of each grid or part of grids according to the fluid data, updating the design parameters and returning to S2; and S6, obtaining the optimal ventilation area of each grid. The grid plate is formed by adopting the grid plate design method, the air bath device comprises the grid plate, and the photoetching machine comprises the air bath device. Flowing uniformity and stability of the fluid outlet are improved.

The invention relates to an inner clamping type hoisting device for a braking drum of an automobile. The inner clamping type hoisting device is used for hoisting the braking drum. The hoisting device comprises a hoisting shaft, clamping plates, a sleeve, a pulling rod, a locating ring, hinge pins, a hoisting ring and a handle, wherein the hoisting ring for hoisting the hoisting shaft is mounted at the upper end of the hoisting shaft; two clamping plates with symmetric positions are mounted at the lowermost end of the hoisting shaft; the sleeve and the locating ring sleeve the hoisting shaft; the sleeve can be mounted and located through the locating ring; the pulling rod is arranged between the sleeve and the clamping plate; the sleeve and the pulling rod as well as the pulling rod and the clamping plate are respectively connected through the hinge pins; the sleeve and the clamping plates are integrally connected through the pulling rod; the clamping plates at two sides are overturned up and down by using a central line of the hoisting shaft as an axis and are extended and clamped into an inner circle of the braking drum so as to hoist the braking drum. The inner clamping type hoisting device enters and is clamped inside the inner circle of the braking drum; after hoisting, the hoisting device can be used for automatically adjusting the center of the gravity; the operation is simple and convenient, the labor intensity is alleviated, the hoisting is stable, and falling can be avoided during hoisting, so that the potential risk can be eliminated.

The invention discloses a centrifugal emulsion online filtering system, which relates to the field of emulsion filtering systems, the system comprises a device body, liquid inlets are formed in the two sides of the device body, a liquid outlet is connected to one end of the device body, a mounting bin is connected to the top end of the device body, a connecting bin is connected to one end of the mounting bin, a first motor is mounted at the top end of the mounting bin, and a first bevel gear is connected to the output end of the first motor. The system comprises a device main body, a liquid inlet, a liquid outlet, a mounting bin, a connecting bin, a second motor, a driving wheel, a driven wheel, a transmission wheel, teeth, a filter cartridge, a sliding block and a connecting cylinder, thedevice can realize continuous circulating emulsion oil-residue separation, centrifugal separation can be realized after emulsion enters from the liquid inlet, only solid-liquid separation is realized, the components and proportion of a liquid solvent are not influenced, the device has strong applicability and treatment effect, is not limited by particle size, and is safe and environment-friendly,and no chemical reagent is introduced into the device.

The invention discloses a preparation method of high-strength and high-toughness thin strip aluminum of an ultra-fine structure, and the method comprises the following steps: homogenizing of an aluminum casting blank, rough rolling, strong shearing, deforming and rolling, asynchronous and synchronous mixing at a high speed, intermediate rolling, finish rolling and the like. The average grain sizeof the prepared thin strip aluminum of the ultra-fine structure is less than 500 nanometers, and the thin strip aluminum has high strength and good ductility and toughness. Compared with the prior art, the prepared thin strip aluminum is long in service life, simple in production process, low in manufacturing cost, capable of being achieved through common industrial equipment, high in production efficiency and convenient to apply industrially.

The invention discloses a large-size monocrystal diamond epitaxial layer stripping method, and belongs to the technical field of crystal growth. The method comprises the following steps: depositing a mask material on the surface of a substrate, depositing a protective layer material, etching a mask pattern by laser, obtaining a diamond substrate with a patterned mask material, depositing and growing a diamond epitaxial layer, soaking and stripping and the like. According to the technical scheme, the epitaxially-grown monocrystal diamond film is naturally peeled off due to stress difference in the cooling process, and epitaxially-grown crystals are high in quality, small in material loss and not limited by the material size.

The invention discloses a self-steady flow type energy storage pool, and relates to the technical field of energy storage equipment. The self-steady flow type energy storage pool specifically comprises a box body, wherein two water distributors are symmetrically arranged in the box body, and the water distributors sequentially divide the inner space of the box body into a hot water transition area, an energy storage area and a cold water transition area which are not communicated with one another from top to bottom. Each water distributor comprises fixed partition plates and water distribution assemblies which are arranged at intervals, each water distribution assembly comprises a water distribution barrel, and a plurality of first flow channels and second flow channels which are arranged at intervals are evenly distributed on each water distribution barrel in the axis direction. A valve core is arranged in each water distribution barrel, each valve core comprises a piston part and a connecting rod part which are arranged at an interval, an air passage is arranged in each valve core, an air bag sleeves outside each connecting rod part, and the position, positioned in the corresponding air bag, of each connecting rod part is provided with an air hole communicated with the corresponding air passage. One-way valves are arranged on first water filling pipes, first water discharging pipes, second water filling pipes and second water discharging pipes. The energy storage pool can reduce the thickness of a thermocline and ensure the stability of the thermocline.