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2364 results about "Resistance wire" patented technology

Resistance wire is wire intended for making electrical resistors (which are used to control the amount of current in a circuit). It is better if the alloy used has a high resistivity, since a shorter wire can then be used. In many situations, the stability of the resistor is of primary importance, and thus the alloy's temperature coefficient of resistivity and corrosion resistance play a large part in material selection.

Multifunctional electric cooker with high heating efficiency

The invention discloses a multifunctional electric cooker with high heating efficiency. The multifunctional electric cooker with high heating efficiency comprises a handle, an upper top cover, a lower top cover, a pot body, a heating tank, a baffle, a liner, a spring pipe, a bottom heating resistance wire, side heating resistance wires, a safety buckle, a gas pressure meter, a gas pressure valve, a filtering bowl and a heat isolation shell, wherein the handle is connected with the lower top cover through the upper top cover, the lower top cover is connected with the heating tank through the pot body, the baffle is welded to the inner side of the pot body, the liner is arranged on the inner side of the baffle and connected with the heating tank through the spring pipe, the bottom heating resistance wire is arranged on the inner side of the heating tank, and the side heating resistance wires are arranged on the left side and the right side of the liner. The multifunctional electric cooker adopts symmetrical design, and the structure design is simple; by adoption of a three-face heating mode, heating efficiency is higher, the heating speed is higher, the electric cooker function and the pressure cooker function are integrated, the airtightness effect is good, the pneumatic control capacity is high, operating power is low, and the multifunctional electric cooker is excellent in performance and has high heating efficiency.
Owner:吕文统

Device and method for measuring phase change latent heat of composite phase change energy storage material

The invention discloses a device and a method for measuring phase change latent heat of a composite phase change energy storage material, and belongs to the technical field of test of building materials. Obvious shortcomings of small using amount of samples, large error, low representativeness and the like exist in the conventional method for measuring the thermal performance of a composite phase change material. The invention discloses a device for measuring the phase change latent heat of the composite phase change energy storage material and provides a corresponding measurement method. The invention is characterized in that a large quantity of phase change materials are heated by disk-type resistance wires under the condition that the heat of a constant-temperature water bath is preserved; and a curve of the temperature changed along with the time is measured by a plurality of groups of thermocouples and subjected to regression analysis, so that the thermal performance of the composite phase change material can be reflected really. The device and the method have great significance for popularization and application of the composite phase change material, particularly for building energy conservation.
Owner:CHINA BUILDING MATERIAL TEST & CERTIFICATION GRP XIAMEN HONGYE

Analog accelerated corrosion test device

ActiveCN102081034AAccelerated seawater corrosionFast evaluation of corrosion resistanceWeather/light/corrosion resistanceElectricityWater baths
The invention belongs to the technical field of corrosion test, and relates to an analog accelerated corrosion test device. A ventilated baffle plate is arranged at the bottom of a cavity of a test box body of a square box-type structure; a corrosion solvent is filled in the cavity of the test box body; an accelerant concentration probe is arranged on the side wall of the upper middle part of thetest box body; a sample holder is transversely placed on the upper part of the cavity of the test box body; a test box cover plate is arranged at the top of the test box body; the test box body is placed at the middle position of a water bath body of an oblong box-type structure in a supported mode; tap water is filled in the outside space of the test box body in the cavity of the water bath body; a resistance wire serving as heating equipment is arranged in the side wall of the bottom of the water bath body; an accelerant concentration controller, an aeration quantity controller and an electronic temperature controller are combined into an integrated structure in an electric communication mode; and an accelerant is filled in an accelerant accommodating tank. The device has short test period, high material corrosion resistance evaluation speed and good effect, is favorable for popularization and application of new materials, saves the materials, and has low test cost.
Owner:725TH RES INST OF CHINA SHIPBUILDING INDAL CORP

Slide-bar type 3D printer capable allowing output materials to be changed

The invention discloses a slide-bar type 3D printer allowing output materials to be changed. The 3D printer comprises a base, a door-shaped support, a beam, a jet head and a printing platform, wherein the jet head comprises a barrel-shaped feeding barrel and a tapered heater; the feeding barrel is arranged at the upper part of the jet head; the tapered heater is arranged at the lower part of the jet head; a resistance wire is wound around the inner chamber wall of the heater; a nozzle is arranged at the bottom of the heater; an opening allowing a raw material tank to go in and out is formed in the body of the feeding barrel; a slide-bar type press-feeding mechanism for pressing materials in the raw material tank into the heater is arranged on the beam at the top of the feeding barrel and comprises an extruding head, a slide bar and a gear; the slide rod is vertically arranged; the extruding head is arranged at the bottom of the slide bar; the gear is arranged on the side of the slide bar and meshed with the gear rack on the slide bar. According to the 3D printer, raw material change can be performed on the jet head directly, conveniently and quickly. Therefore, the non-cutting feeding time is shortened, and the working efficiency of the 3D printer is improved.
Owner:GUANGXI QINZHOU YUJIA INVESTMENT

Device for realizing 3D metal printing by virtue of supporting structure

The invention relates to a device for realizing 3D metal printing by virtue of a supporting structure. The device comprises a translation stage capable of moving along the X-axis, the Y-axis and the Z-axis. Heating resistance wires and a thermocouple are arranged on a base plate of the translation stage. The heating resistance wires are used for preheating the base plate, so as to enable metal droplet layers to be tightly overlapped. The thermocouple is used for realizing the measurement and the feedback control of a temperature. An electromagnetic induction heating copper pipe and a cooling water pipe are arranged outside a graphite crucible, metallic raw materials are enabled to be molten to form molten metal, the bottom of the graphite crucible is connected with a metal printing spray nozzle, a protective gas is inputted from a gas inlet pipe at the top of the graphite crucible, and under the pulse pressure, molten metal forms regular metal droplets to drip to the base plate of the translation stage. The 3D metal droplet printing is realized through the cooperation with the movement of the translation stage. A supporting material spray nozzle is adjacent to the metal printing spray nozzle. A uniform mixture of gypsum and photosensitive resin is extruded stably under the constant pressure inputted by the gas inlet pipe so as to print the supporting part of a part. The switching between metal and the supporting material is automatically recognized and controlled by a control system. The 3D metal printing device is reasonable, high in operability, high in degree of automation, high in production efficiency, and suitable for being widely popularized, and ensures the molding quality.
Owner:STATE GRID CORP OF CHINA +5

Float type level gauge for on-site indication

The invention relates to a float type level gauge for on-site indication, which comprises a float, a graduated scale and a noctilucence wheel, and is characterized by further comprising a conducting or magnetic conducting guide rail, wherein the noctilucence wheel comprises an insulating box, a light source, two longitudinally arranged magnetic shafts or metal shafts, and two conducting wires for supplying power to the light source; for a magnetic float type level gauge, the noctilucence wheel also comprises a steel magnet; under the magnetic action, the magnetic shafts or the metal shafts, along with upward and downward movements of the float, move upwards and downwards along the guide rail so as to indicate the liquid level on-site accurately in time; or a resistance wire is enwound on the guide rail, and the resistance value of a conducting loop comprising the guide rail, the magnetic shafts or the metal shafts, the conducting wire, the light source and the like is measured to acquire a corresponding liquid level value so as to achieve the continuous long-distance transmission of liquid level data. The float type level gauge can also comprise a pulley wheel, a counterbalance, a connecting rope or a connecting belt to balance the noctilucence wheel. The float type level gauge has the significant characteristics of simple structure, clear and obvious on-site indication, flexible and accurate measurement and continuous long-distance signals.
Owner:DALIAN CONSERVATION SCI & TECH CO LTD

Material mixing device for chemical production

The invention discloses a material mixing device for chemical production. The material mixing device comprises a device body; the device body comprises a main body, the inner side of the main body is provided with a heat preservation layer, the inner side of the heat preservation layer is provided with a resistance wire heating layer, and the inner side of the resistance wire heating layer is provided with a ceramic layer; a feeding opening is formed in the left end of the upper side of the device body; a clapboard is horizontally arranged on the upper side of the interior of the device body and fixed on the inner wall of the device body; a bearing base is connected to the center of the top of the device body. The material mixing device for the chemical production is reasonable in structural design and long in service life; a stirring rotating shaft rotates clockwise and counterclockwise alternately, so that the material mixing effect and the working efficiency are effectively improved; the length of a stirring rod can be increased or decreased according to the rotation speed, and therefore the mixing radius is changed; through the arrangement of a stirring disc, materials at the bottom can be mixed, and the material mixing effect is further improved; in addition, under the cooperation function of a damping and energy-absorption part, a connecting rod, an annular spring part and an auxiliary damping part, the vibration caused when the device runs can be greatly reduced, and the stability is improved.
Owner:林红英

Float type level gauge for high-temperature high-pressure or high-temperature low-density medium

InactiveCN101726344ASolve high temperature and high pressureSolve densityLevel indicators by floatsMagnetic tension forceSpherical shaped
The invention relates to a float type level gauge for high-temperature high-pressure or high-temperature low-density medium, comprising a float chamber, a float and a graduated scale; the float type level gauge is characterized in that: the float is a hollow spherical shape; the float type level gauge further comprises a guide rail and a magnetic connector, a magnetic steel or a disc-shaped magnetic steel is arranged in the magnetic connector and forms magnetic attraction with a magnetic ball body in the float made of the nonferrous magnetic material or the disc-shaped magnetic steel the float made of the nonferrous magnetic material, a metal shaft laterally spanned at two side walls of the magnetic connector is exposed to two side walls and is attached to the guide rail by magnetic force, and the metal shaft can move up and down along the guide rail under the driving of the magnetic force; in addition, resistance wires are wound on the guide rail to measure the change of the resistance value of a return circuit, so as to realize continuous remote transmission of a signal. The float type level gauge for high-temperature high-pressure or high-temperature low-density medium solves the difficult problem of liquid level measurement in the high-temperature high-pressure or high-temperature low-density medium and has high measuring precision; in addition, the structure is simple, the usage is convenient, the manufacturing and maintaining cost is low and the application is wide.
Owner:DALIAN CONSERVATION SCI & TECH CO LTD

Method for testing welding quality of electro-fusion joint and realizing automatic evaluation

The invention relates to electro-fusion welding technology for plastic pipelines or plastic composite pipelines, and aims to provide a method for testing the welding quality of an electro-fusion joint and realizing automatic evaluation. The method comprises the following steps of: measuring peeling energies E of the electro-fusion joint and the distance L between a characteristic line and a resistance wire under different welding conditions, and acquiring a fitted curve, serving as a calibration basis, of the peeling energy per unit area Ep and the distance L; and testing the welding quality of the electro-fusion joint and realizing the automatic evaluation. The method can prevent unqualified electro-fusion joints from being put into use, so that the safety of plastic pipes and composite pipe systems is ensured. A software module for realizing the method is integrated on an electro-fusion welded or electro-fusion jointed ultrasonic testing instrument, so that a welder automatically controls the welding quality or the testing instrument automatically evaluates an electro-fusion welded joint to be tested, the influence of human factors is avoided, and the quality of a welded joint is more reliable and the evaluation result is more objective.
Owner:ZHEJIANG UNIV

Automatic balancing device for cleaning equipment

The invention provides an automatic balancing device for cleaning equipment. The device comprises a conveying belt, a rotation mechanism, a supporting mechanism, an elastic contact chip, a resistance wire, a cylinder, a piston, a piston rod, a driving device and a driving wheel, wherein two ends of the piston rod are respectively connected on the piston and the rotation mechanism; a supporting part is arranged on the supporting mechanism; the resistance wire is wound outside the supporting part, and an insulation layer covers the resistance wire; each circle of the resistance wire forms a resistance ring, and adjacent resistance rings are attached with each other; a notch is formed in each resistance ring, and adjacent notches are communicated with each other; and a contact is formed in the front end of the elastic contact chip, is contacted with the resistance wire at the notches, and can slide to and fro in the channel formed by each notch. After load disappears, the cylinder returns to the initial balanced state, so that the detected resistance value is recovered to the initial value, and the driving device can run at an adaptive rotating speed according to the size of the load under an unmanned situation and can halt in time after the load disappears.
Owner:CHANGSHA GAOHUI ENVIRONMENTAL PROTECTION SCI & TECH

Device and method for direct reduction and iron making of pyrolyzing tar based on biomass

The invention provides a device and method for direct reduction and iron making of pyrolyzing tar based on biomass. The device is composed of a biomass pyrolysis area and an iron ore reduction area, wherein a biomass feeder is arranged on the top of the biomass pyrolysis area; the baiting pipe of the biomass feeder is connected with a pyrolysis basket through a baffle board; the iron ore area is provided with a gas inlet, a gas outlet, a ceramic screen, an iron powder feed port and an iron powder discharging port; and a resistance wire is arranged on outer side surface of the iron ore reduction area. The method comprises the following steps: pre-heating, dehydrating and pore-forming of the iron ore powder, deposition of gaseous biomass tar on the surface of porous iron ore powder surface, tar cracking and iron ore reduction. The direct reduction and iron marking is performed by pyrolyzing tar based on biomass in replacement of the coal and natural gas, so the investment is less, the cost is low, the production efficiency is high, and the obtained product is high in quality, the dependence of the iron-making industry to the fossil energy is cast off, the harm to the environment is reduced while directly improving the quality of the directly reduced iron product, and the technical and equipment problem in the environment-friendly iron-making industry is fundamentally solved.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY

Automatic assembling welding equipment for heat pipe radiator

The invention relates to the technical field of heat pipe radiators, in particular to automatic assembling welding equipment for a heat pipe radiator. The automatic assembling welding equipment comprises a positioning jig, an upper cover jig, a three-dimensional dispensing machine, a working platform, a part loading assembly, a part pushing assembly and an upper jig pushing assembly, wherein the positioning jig is embedded into the working platform; the part loading assembly comprises a loading motor, a first lead screw which is coaxially connected with the output shaft of the loading motor, a first nut slide block which is arranged on the first lead screw in a threaded sleeving mode, a loading box and a loading plate; one end of the loading plate is connected onto the first nut slide block, and the other end of the loading plate extends into the loading box; the part pushing assembly comprises a pushing air cylinder which is fixed in one end; the output end of the pushing air cylinder is fixedly connected with a pushing plate; a material shape hole which is the same with a loaded part in shape is formed in the pushing plate; and a heating resistance wire is arranged inside the upper cover jig. The automatic assembling welding equipment can complete assembling and welding of heat pipe radiators, is small in floor space, is high in degree of automation, and is low in cost.
Owner:JIANGSU UNIV OF TECH

Natural luster finishing machine roller for electromagnetic and resistance heating by using power current

The invention relates to a component used in textile machinery, in particular a natural luster finishing machine roller which comprises a roller body 21, a heating device and a rotary hook-up device, wherein the heating device comprises coils 7, a core barrel 22, a heat insulated pipe 6, a capacitor resistor 10, the core barrel 22, the heat insulated pipe 6 and the capacitor resistor 10 are sequentially arranged at the inner side of the roller body 21; the coil 7 formed by winding a rope-shaped heater is arranged in a groove of the core barrel 22; the starting end wire 8 of each group of coils 7 is connected with one live wire of a three-phase AC power supply on a carbon brush 16, the tail end wire 9 thereof is connected with a capacitor 10 in series and then connected with a shared neutral wire of the three-phase AC power supply on the carbon brush 16, and thus a star-shaped connection circuit combining resistor, inductance and capacitor is formed. By using the principle that power current can generate current while flowing through resistance wires and generate magnetic fields while flowing through magnetic fields to make magnetic conductors generate heat because of inductance, the natural luster finishing machine roller has the advantages of dual effects of electromagnetic and resistance heat, high heating speed, high energy utilization rate and few device failures.
Owner:JIANGSU JUNFENG TEXTILE MACHINERY

Screw type 3D printer capable of replacing outputting material

InactiveCN103350509AImprove work efficiencySave feeding auxiliary timeElectrical resistance and conductanceSprayer
The invention discloses a screw type 3D printer capable of replacing an outputting material, which includes a base, a gate type bracket, a cross beam, a sprayer and a printing platform, wherein the sprayer comprises a cylindrical feeding drum at the upper part and a conical heater at the lower part; a resistance wire is wound on the wall of an inner cavity of the heater; a spray nozzle is arranged at the bottom of the heater; an opening for allowing a stock tank to get into and out of the feeding drum is formed in a drum body of the feeding drum; a screw type stock press fitting mechanism for pressing the stock in the stock tank into the heater is arranged on the cross beam at the top of the feeding drum; the screw stock press fitting mechanism includes an extrusion head, a screw rod and a couple of meshed gears; the screw rod is vertically arranged; the extrusion head is arranged at the bottom of the screw rod; an internal thread of the driven gear is matched with the screw rod; the driving gear is fixedly connected onto an output shaft of a servo motor. With adoption of the screw type 3D printer, the raw material can be replaced on the sprayer directly, convenience and quickness are achieved, the loading auxiliary time is saved, and the working efficiency of the 3D printer is improved.
Owner:GUANGXI QINZHOU YUJIA INVESTMENT

Boiling chlorination furnace with temperature-controlling device and temperature-controlling method thereof

The invention discloses a chloride boiling furnace with a heating device and a corresponding temperature control method, comprising a heating device and a temperature measuring device, which is characterized in that: the chloride boiling furnace facilitates to control environmental temperature of the chlorination reaction; the heating device is arranged on the wall of the chloride boiling furnace and adopts the resistance wire which is even distributed in the wall of the furnace; the temperature measuring device adopts a thermocouple which is protected by bushing. When using the chloride boiling furnace, the temperature control method is that: the adding material is heated by heating device to reaction temperature firstly; different adding material temperatures are adopted according to the different chloride materials which is high-titanic slag or titanium carbide; and then the normal temperature of the chloride boiling furnace in running is controlled through monitoring the thermocouple and making-breaking the resistance wire. The chloride boiling furnace has the advantages of simple and easy practice, convenient manufacture, low cost, being able to control the temperature in the furnace conveniently and accurately, being suitable for controlling the running temperature in small chloride boiling furnace particularly and applying in the preparing of the titanium tetrachloride field mostly.
Owner:PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP

Multifunctional bionic shoes cleaning machine

The invention discloses a multifunctional bionic shoes cleaning machine which is composed of a cleaning device and a drying device, wherein bristles of a side brush of the cleaning device are distributed in a staggered manner like surface villi of a mole to effectively remove dust from a shoe upper with a relatively uniform force; a dust collection fan and a dust collection bag are used for collecting dust, and the dust collection bag can be detached to be cleaned; a bottom brush of the cleaning device can be used for removing sludge from soles; as a shoe steps on a cleaning support pedal, a spring is compressed under gravity of the shoe, so that a groove in the middle of the shoe comes into better contact with a support rod to avoid cleaning dead angles; after being cleaned, shoes are put on a water absorption pad so that water on the shoes is simply absorbed, and then the shoes are placed on a drying support pedal, a drying fan and a resistance wire of the drying device work simultaneously, and hot air is blown out of air outlet holes to dry soles; and the air outlet holes are of a honeycomb-shaped hexagonal structure which is beneficial to drying. Through the shoe-cleaning machine disclosed by the invention, soles, shoe uppers, heels and lateral uppers are cleaned in all directions.
Owner:JILIN UNIV

Automatic clamping device applied to automatic sponge cutting mechanism

The invention discloses an automatic clamping device applied to an automatic sponge cutting mechanism. The automatic clamping device applied to the automatic sponge cutting mechanism comprises a rack, wherein a sliding rail and a support pillar are fixed on the top surface of the rack; the top of the support pillar is fixed on an upper top plate; an upper pressing disk lower pressing motor is fixed on the upper top plate; output shafts of the upper pressing disk lower pressing motor penetrate downwards through the upper top plate and are screwed onto a screwing pillar arranged at the top of an upper pressing disk; a plurality of limiting rods are fixed on the top surface of the upper pressing disk; the limiting rods are inserted and sheathed in a plurality of sleeves on the bottom surface of the upper top plate; a sliding slot is formed in the top surface of the sliding rail; a sliding block is inserted and sheathed in the sliding slot; a movable plate is fixed on the top surface of the sliding block; a support frame is fixed on the movable plate; a driving motor is fixed at the bottom surface of a top plate of the support frame; an output shaft of the driving motor stretches out of the top plate of the support frame and is fixedly provided with a bottom plate; an insertion rod extending upwards is arranged at the middle part of the top surface of the bottom plate. The automatic clamping device applied to the automatic sponge cutting mechanism can be mounted at the position of a resistance wire cutting device, and is capable of automatically fixing the upper pressing disk on the insertion rod, fixing sponge blocks and automatically cutting the sponge blocks; the effect is excellent.
Owner:苏州由派克包装材料有限公司

Flexible composite beam electric heating microdriver based on U+V shape

The invention relates to a flexible composite beam electric heating microdriver based on a U+V shape, which belongs to the technical field of microelectromechanical systems. The flexible composite beam electric heating microdriver based on a U+V shape comprises a U-shaped beam base, a U-shaped beam pole, a V-shaped beam base, a V-shaped beam pole, a U-shaped double-hot arm composite beam electric heating driver and a V-shaped composite beam electric heating driver, wherein the U-shaped double-hot arm composite beam electric heating driver comprises a U-shaped double-hot arm metal resistance wire, a U-shaped metal cold arm, a U-shaped double-hot arm polymer drive layer and a U-shaped cold arm polymer layer; and the V-shaped composite beam electric heating driver comprises a V-shaped metal resistance wire, a metal contact point and a V-shaped polymer drive layer. The U-shaped double-hot arm metal resistance wire, the U-shaped metal cold arm and the V-shaped metal resistance wire are completely coated by the U-shaped double-hot arm polymer drive layer, the U-shaped cold arm polymer layer and the V-shaped polymer drive layer to form a polymer-metal-polymer sandwich structure. The electric heating microdriver has larger drive displacement, higher drive rigidity, low power consumption and high energy utilization ratio.
Owner:SHANGHAI JIAO TONG UNIV
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