45results about How to "No contact resistance" patented technology

The invention discloses a copper-aluminum socket connector for the electric conduction, the preparation method thereof and the application thereof. The socket connector comprises an aluminum body and a copper plug integrated into a whole by welding. The preparation method comprises the following steps: (1) manufacturing the molded aluminum body and the copper plug, and cleaning the welding surfaces of both the aluminum body and the copper plug; and (2) welding the aluminum body and the copper plug into an integrated part by adopting a flash welder or a spin friction welder to obtain the copper-aluminum socket connector semi-product for the electric conduction. The socket connector is mainly applied to a moving contact, a static contact or a conductive contact arm in a high and low voltage switch cabinet or a vacuum circuit breaker. The socket connector has the advantages of non-contact resistance, no galvanic corrosion, smaller resistance, less current conveyance loss, improved current transmission efficiency and reduced power transmission and transformation loss.

The invention discloses an adjustable-oil-temperature three-dimensional rib pipe oil cooler which comprises a shell. A liquid inlet header is arranged at the upper portion of the shell, and a liquid outlet header is arranged at the lower portion of the shell. The adjustable-oil-temperature three-dimensional rib pipe oil cooler is characterized in that multiple heat transfer pipes are connected between the liquid inlet header and the liquid outlet header and are three-dimensional rib pipes, and the three-dimensional rib pipes are outer three-dimensional rib pipes or inner three-dimensional rib pipes or inner and outer three-dimensional rib pipes; according to the outer three-dimensional rib pipes, multiple three-dimensional protruding units are arranged on the outer surfaces of the three-dimensional rib pipes; according to the inner three-dimensional rib pipes, multiple three-dimensional protruding units are arranged on the inner wall face of the three-dimensional rib pipes; according to the inner and outer three-dimensional rib pipes, multiple three-dimensional protruding units are arranged on the outer surfaces and the inner wall faces of the three-dimensional rib pipes; a partition plate is arranged in each of the liquid inlet header and the liquid outlet header; and a fan is arranged in the shell, an automatic air speed adjusting device is arranged in the fan, a temperature detection device is arranged at the position of an outlet of the liquid outlet header, and the temperature detection device is connected with the automatic air speed adjusting device. The adjustable-oil-temperature three-dimensional rib pipe oil cooler can be widely applied to the fields of energy, chemical engineering, refrigerating and the like.

The invention relates to a shelf device of a vacuum freeze drier. The shelf device of the vacuum freeze drier comprises shelves, a hydraulic column and a drying box. The shelves are arranged from top to bottom at equal intervals and hung inside the drying box. Every two adjacent vertical shelves are connected through hinges located at the two ends of the shelves. The front portion of the bottom-layer shelf is connected with the bottom of the drying box through bolts. A side plate is welded on the periphery of each layer shelf. According to the shelf device of the vacuum freeze drier, product trays are removed, the side plate is welded on the periphery of each layer shelf, the shelves replace the trays, and bulk pharmaceutical chemicals are directly frozen and dried on the shelves. The shelf device of the vacuum freeze drier has the advantages that contact thermal resistance does not exist between the bulk pharmaceutical chemicals and the shelves, so that the freeze-drying process is greatly accelerated, and the bulk pharmaceutical chemicals can be rapidly fed, discharged and cleaned.

The invention relates to a soft-pack battery thermal control device, in particular to a soft-pack battery thermal control device which can be soaked into cooling water. Furthermore, in view of the defect that the anticorrosion performance of packaging materials for batteries is not inadequate in the prior art, the invention provides a corresponding packaging material; the packaging material is made from an aluminum foil layer resistant to cooling water corrosion and a plastic layer arranged on the surface of the aluminum foil layer.

Provides a shaft seal mechanism for improving air pressure distribution near the split portion of the sheet seal, improved sealing performance, a structure for mounting the shaft seal mechanism on the stator, and a turbine, and the structure for mounting the shaft seal mechanism on the stator is provided on the A structure in which an annular space between the rotor and the stator and an annular shaft seal mechanism having one or more divided parts are attached to the stator, wherein the shaft seal mechanism is composed of a laminated sheet group consisting of a plurality of sheets, and the sheet group is connected to the rotor. Sliding contact, and the outer peripheral root of the thin plate group is bonded, the inner peripheral free end is not bonded, the rotor surface forms an acute angle with the thin plate, the above-mentioned annular space is divided into a high-pressure side area and a low-pressure side area, and the stator can accommodate The groove of the above-mentioned shaft seal mechanism is inserted into the gap formed after the above-mentioned shaft seal mechanism is assembled into the above-mentioned groove to install the shaft seal mechanism on the stator. An annular recess is arranged on the surface.

The invention relates to an integrated type high-power LED lamp for industrial use based on a phase-change heat transfer technology. The integrated type high-power LED lamp for the industrial use comprises a COB light source, an evaporation plate and a radiator which are sequentially connected from bottom to top; the upper end of the evaporation plate and the lower end of the radiator define a vacuumized containing cavity, and the containing cavity is internally filled with a liquid working medium; and liquid absorption cores with one micro-groove-shaped surfaces are arranged at the upper end and the lower end of the interior of the containing cavity separately. The integrated type high-power LED lamp for the industrial use is compact in structure, small in size, light in weight, capable of meeting high-power illumination and fast in radiating, and relates to the technical field of LED lamp radiating.

The invention discloses a lens type simulation device of a high heating flux heating surface. The lens type simulation device structurally comprises a fixing component, a parallel light generator, a convex lens, a cooler and a visor, wherein the parallel light generator is installed on the fixing component and used for emitting parallel light which has low energy flux density; the convex lens and the cooler are sequentially arranged in the emitting direction of the parallel light, and the convex lens enables the parallel light with low energy flux density to form the high heating flux heating surface on the surface of the cooler. The high heating flux heating surface obtained by the simulation device has the advantages of being uniform in distribution, high in heating flux, free of thermal contact resistance, high in heating efficiency and rapid in temperature rise, the heating flux and the radius of a heating area are adjustable, heating boundary areas with different shapes and areas can be obtained by changing the shape and size of light-permissible holes of the visor, and the various requirements for high heating flux heating in the field of thermal testing and physical experiments can be met.

The invention relates to a composite fiber electric heating twisted wire and a preparation method thereof. The composite fiber electric heating twisted wire is characterized in that a plurality of strands of superfine composite fibers are spun and twisted to from the electric heating twisted wire, the diameter of the superfine composite fibers ranging from 9 to 15um. Products made of the composite fiber electric heating twisted wire are soft, light, portable and flexible, and are safe to human bodies. The wire is called heating fibers and is specially used for heating. The fibers are soft and flexible and can replace a metal heating wire to realize a heat release function; the diameter of the composite fiber electric heating twisted wire is small; and the resistance of the composite fiber electric heating twisted wire is small, and the resistance per meter of the wire is smaller than 1 ohm.

The invention relates to a cold-end heat exchanger for a Stirling refrigerator. The cold-end heat exchanger for the Stirling refrigerator comprises a cold head, a regenerator vent end cover, a regenerator vent hole and an expansion cavity, wherein the regenerator vent hole is formed in the regenerator vent end cover. The cold head comprises a cold head inner top face and a cold head inner wall face. The cold head inner top face and the cold head inner wall face are respectively of a dome structure, are fitted in appearance, and are provided with a plurality of evenly distributed top face slots and a plurality of evenly distributed wall face slots respectively. The top face slots correspond to the wall face slots one by one and are communicated with the wall face slots. The top of the cold head inner top face is provided with a hollow cylindrical gas storage tank defined by the top face slots. The regenerator vent end cover is provided with a plurality of evenly distributed regenerator vent holes in an inclined mode. The cold head inner wall face is provided with a boss. The wall face slots are formed in the side face of the boss. The cold-end heat exchanger for the Stirling refrigerator has the advantages that the heat exchange area is large, the heat transfer coefficient is large, contact thermal resistance is avoided, gas resistance is small and machining is convenient. The heat exchange capacity of the cold-end heat exchanger for the Stirling refrigerator can be improved by more than 30%.

The invention discloses a parallel stream heat exchanger integrated with a microchannel and an outer fin, comprising a left collector tube, a right collector tube, an upper cover board, a lower cover board, a cooling fin set, an air inlet pipe and a liquid outlet pipe; the cooling fin is integrated with a fin and aluminium profile, a microchannel is arranged on the aluminium profile, and the diameter or edge distance of the microchannel is 0.5-3mm; the microchannel of the cooling fin is communicated with the left collector tube and the right collector tube, distance pieces which are arrayed in a staggering way are arranged in the middle of the left and right collector tubes at interval, the left and right collector tubes are divided into a plurality of areas, the air inlet pipe and the liquid outlet pipe and the left and right collector tubes are connected by welding, and the upper cover board and the lower cover board are respectively connected with the left and right collector tubes; by utilizing the microchannel technology, integral outer fin technology and collector tube technology, the invention effectively solves the problem of thermal contact resistance of sheets and the fins; the structure is compact, heat exchanging efficiency is high, the volume is small, the quality is light, the processing is simple, and the heat exchanger adopts all aluminium composite material, thereby greatly reducing the cost.

The invention provides a three-dimensional fin heat exchange plate machining process. The three-dimensional fin heat exchange plate machining process mainly comprises the steps of material selection,unloading, clamping and cutting: (1) material selection: a metal plate with the cutting machinability and good ductility is selected as a basal body plate; (2) unloading: the basal body plate in the step (1) is premachined as a workpiece with a thickness of not less than 0.5 mm; (3) clamping: the workpiece in the step (2) is positioned on three-dimensional fin heat exchange plate cutting equipmentfor positioning; and (4) cutting: the three-dimensional fin heat exchange plate cutting equipment is started for cutting to obtain a three-dimensional fin heat exchange plate. The machining process is adopted to machine three-dimensional fin heat exchange plates with fins staggered on flat plate workpieces and 20-90 included angles between the fins and the horizontal plane; and through special configuration, fluids passing through the surfaces of the fins can form streaming flows, crossing flows, turbulent flows or mixed flows, so that the fluids are low in resistance and excellent in transparency, and the heat exchange efficiency of the heat exchange plates can be greatly improved.

The invention discloses an array substrate. The array substrate includes a display area and a peripheral area adjacent to the display area. The display area includes a plurality of pixel units, and each of the pixel units is provided with a thin film transistor and a pixel electrode. , wherein the drain of the thin film transistor is in direct contact with the pixel electrode. The invention also discloses a display device including the array substrate and a manufacturing method of the array substrate. In the array substrate provided by the present invention, the pixel electrode is in direct contact with the thin film transistor, so that no contact resistance occurs, and the electric field between the common electrode and the pixel electrode can be evenly distributed.

The invention discloses a global optimization control method of a ground source heat pump. Physical models of a ground source heat pump unit, a ground heat exchanger and a water pump are established and analyzed, an optimization algorithm is used for optimizing user side flow rate and ground side flow rate, and the optimized value is used as a set value to a bottom layer closed loop control to enable a ground source heat pump system to operate at an optimal state point. According to the global optimization control method of the ground source heat pump, a brand-new global control strategy of the ground source heat pump system is determined by modeling analysis of a compressor, an evaporator and a condenser of the ground source heat pump system and combining a particle swarm optimization algorithm, the influence of external interference and the control strategy on the system are fully considered, corresponding correction compensation measures are set, and strong engineering practical significance is achieved; in the actual operation process, the energy is saved by 14% compared with a constant flow operation strategy, and energy is saved by 6.7% compared with a traditional five-degreetemperature difference control strategy, and the global optimization control method of the ground source heat pump has important significance for saving the operation energy consumption of the groundsource heat pump system.

The invention discloses a large-power LED lamp based on compound phase-change energy storing material radiating. The large-power LED lamp comprises a reflecting cup, a large-power LED light source arranged at the bottom part of the reflecting cup, and a light transmission plate which is formed by a PC plate or an organic glass plate and is fixed to the front end of the reflecting cup through a mounting ring; a compound phase-change energy storing radiating body which is peripherally equipped with radiating aluminum fins is connected to the rear end of the reflecting cup; a compound phase-change material container of which one end is opened is formed in the middle part of the compound phase-change energy storing radiator; compound phase-change materials fill in the compound phase-change material container; a radiator top cover for sealing is arranged at the opening end of the compound phase-change material container through a screw. With the adoption of the large-power LED lamp based on the compound phase-change energy storing material radiating, the shortages of the existing radiating technology of large-power LED down lamps can be overcome; the LED lamp has a good radiating effect, and is influenced a little by the periodic high-density heat flow, simple in structure, long in service life, convenient to mount, and low in cost.