1505 results about "Resistance wire" patented technology

The invention discloses a manufacturing process of a wafer heating plate, and relates to the technical field of PECVD (Plasma Enhanced Chemical Vapor Deposition) equipment manufacturing. Comprising the steps that a containing groove is formed in the bottom of a hot plate top shell; a heating pipe body is adopted to coil a resistance heating structure, the resistance heating structure comprises a heating disc and a lead pipe, and a resistance wire is arranged in the heating disc; a resistance wire is arranged in the lead tube; the K couple is assembled in the hot plate top shell and used for measuring the temperature of the hot plate top shell; a heating disc of a resistance heating structure is placed in the containing groove, a gap between the heating disc and the containing groove is filled with aluminum powder, and vacuum brazing welding is carried out; the hot plate bottom shell is welded to the bottom of the hot plate top shell, and the lead pipe penetrates out of a first through hole of the hot plate bottom shell. The hot plate neck shell is connected to the lower portion of the hot plate bottom shell, the hot plate neck shell is provided with a second through hole which is formed in a penetrating mode, and the second through hole is communicated with the first through hole. According to the heating disc manufactured by the process, each wafer can be uniformly and stably heated through reasonable layout and an optimized resistance heating structure.

An annular body includes a base, a first resistance wire, a second resistance wire, a first terminal, and a second terminal. The base surrounds a central axis and expands in a direction intersecting the central axis. Resistance values of the first and second resistance wires change according to strain of the base. The first terminal is electrically connected to the end of the first resistance wire. The second terminal is electrically connected to an end of the second resistance wire. The first terminal is at a first position in the circumferential direction. The second terminal is at a second position in the circumferential direction. When viewed in the axial direction, the central angle defined by the first position, the central axis, and the second position is equal to or greater than about 90°.

An apparatus for the extrusion of a solid wire into a resin or paste is disclosed. The apparatus consists of two main parts including an adapter for constraining the wire until mixing with the resin or paste (‘wire injector’), and a motor-driven gear system that feeds the wire into the injector (‘wire extruder’). With this system, a bare wire can be extruded allowing for the creation of lead-in / lead-out sections, or for use with a resin or paste without an inherent curing, drying, or solidifying mechanism. Additionally, this apparatus allows for the extrusion of small (30-40 AWG) wires, enabling unique applications such as the injection of a resistive wire where smaller diameter wires are advantageous for minimized electrical or thermal overhead.

The invention discloses an efficient anti-freezing and anti-blocking integrated induction heating system and method for an oil and gas pipeline, belongs to the technical field of anti-freezing and anti-blocking of oil and gas pipelines, and aims at solving the problems that in the prior art, heating efficiency is low, energy consumption is huge, heating uniformity and adaptability are poor, the system integration degree is low, and the intelligent degree is insufficient. Comprising the steps of S1, induction heating unit arrangement and power management; s2, real-time temperature monitoring and data acquisition; s3, intelligent data analysis and precise heat management; the electromagnetic induction heating principle is adopted, the induction coil directly heats the pipeline and the internal medium, heat conduction loss and heat energy radiation loss of heating modes such as traditional resistance wires and heat tracing bands are reduced, the intelligent power management module can optimize power supply and power adjustment, and the self-adaptive environment and load adjustment strategy is combined, so that the self-adaptive load adjustment is achieved. The heating power can be automatically adjusted according to the environment temperature and the pipeline load, the anti-freezing and anti-blocking effect is guaranteed, meanwhile, energy consumption is remarkably reduced, and the burden of an electric power supply system is relieved.

The invention relates to the technical field of resistors, in particular to an embedded high-strength resistor which comprises a resistor shell, a resistance wire, a resistor lead, a ceramic core and a sliding assembly, the ceramic core is installed in the resistor shell, the resistor shell is provided with the resistor lead, the sliding assembly is arranged in the resistor shell, and the resistor lead is arranged in the sliding assembly. The sliding assembly is located on one side of the ceramic core, the ceramic core is sleeved with the resistance wire, one end of the resistance wire is connected with the inner wall of the resistor shell, and the other end of the resistance wire is connected with the sliding assembly. According to the invention, the sliding assembly is arranged to control the fitting and disconnection of the copper rod and the resistor lead, so that the resistor is prevented from being fused due to a protection circuit due to uncertain factors such as lightning stroke of electrical equipment or current increase at the moment of unstable voltage, and the troubleshooting and replacement times of a fault resistor by workers are effectively reduced; the maintenance cost of the electrical equipment is reduced, and the service life of the electrical equipment is prolonged.

The heat accumulating type electric heater comprises a shell and a heat accumulator, a heat preservation and insulation layer is arranged on the inner side of the shell, the shell comprises a first shell section and a second shell section, and the shell is horizontal; the first shell section comprises an inlet section and a diffusion section, and the diffusion section is arranged to be in a conical shape. The diameter of the second shell section is larger than that of the inlet section. The two ends of the diffusion section are connected with the inlet section and the second shell section respectively. The heat accumulator is made of high-temperature-resistant alloy and provided with a plurality of heat exchange holes and heating holes, the heat exchange holes and the heating holes penetrate through the heat accumulator, heating units are arranged in the heating holes, and each heating unit comprises a resistance wire. According to the invention, gas flow heating is realized by adopting resistor direct heating and heat storage, the gas purity is high, and the test accuracy is good. The shell is of a horizontal structure, the length of an outlet pipeline can be reduced, temperature loss can be reduced, the defect that the temperature field is uneven due to the fact that the temperature of the upper portion of the heat accumulator is too high and the temperature of the lower portion is too low in the heat accumulation process can be overcome, and the temperature control precision reaches + / -1 DEG C.

The invention discloses flutter suppression equipment in continuous machining of long bars, and particularly relates to the technical field of flutter suppression, the flutter suppression equipment comprises a rack, a strip-shaped groove is formed in the inner wall of the top of the rack, a two-way threaded rod is connected to the inner wall of the middle of the strip-shaped groove through a bearing, and moving blocks are connected to the outer walls of the opposite positions of the two sides of the two-way threaded rod; connecting plates are fixedly connected to the outer walls of the tops of the moving blocks, connecting blocks are fixedly connected to the opposite sides of the two connecting plates, clamping plates are connected to the ends, away from the connecting plates, of the connecting blocks, heating resistance wires are embedded in the clamping plates, and the clamping plates are made of shape memory alloy. The surface of the clamping plate is connected with a vibration reduction composite layer. The vibration reduction composite layer plays a role in assisting flutter suppression and meanwhile carries out kinetic energy recovery work, through real-time online damping adjustment, flutter is effectively suppressed, certain electric energy is provided in cooperation with kinetic energy recovery, and the energy-saving effect is achieved.

The present invention relates to the technical field of solid waste treatment, and particularly relates to a separation device for environmental protection recycling of waste batteries, including a fixed frame, a collection box, a crushing roller, etc.; a collection box is installed under the fixed frame; two symmetrically arranged crushing rollers are rotatably connected to the upper side of the fixed frame. By using a resistance wire to short-circuit the lithium battery in the storage cavity, the present invention realizes the rapid discharge of the lithium battery, eliminates the process of soaking the lithium battery in salt water, shortens the time for recycling the lithium battery. Subsequently, during the process of pushing the lithium battery out of the discharge cavity, the heat shrinkable film is separated by the clamping plate and the first cutter, avoiding the subsequent separate separation treatment of the heat shrinkable film, improving the separation efficiency, reducing the recycling cost, and reducing the subsequent cleaning work of the heat shrinkable film. Moreover, during the process of crushing the lithium battery by the crushing roller, the lithium battery can be synchronously added to the storage cavity, so as to realize the synchronous progress of the discharge and crushing of the lithium battery, and improve the recycling efficiency of the lithium battery.

The invention relates to the technical field of aging heat treatment furnaces, in particular to an aging heat treatment furnace for aluminum material treatment, which comprises a furnace box body, a furnace door for lifting at an outer port of the furnace box body and a trolley for conveying workpieces at the bottom end of the furnace box body, and a plurality of resistance wire mechanisms for heating a furnace chamber are arranged on wallboards on two sides of the furnace box body. In the prior art, a resistance wire in a resistance wire heating furnace is directly exposed in a large environment in the furnace, a furnace door is frequently opened when materials are taken and placed for multiple times, and the environment temperature in the furnace is changed, so that the heating resistance wire is impacted and influenced. The heating resistance wire is moved into the coverage range of the long plate cover before the furnace door is opened, so that part of heat dissipated by the heating resistance wire is intercepted by the long plate cover, a constant-temperature small environment is built in the coverage range of the long plate cover, then the furnace door is opened, and the heating resistance wire cannot be influenced by the change of the temperature of a large environment in the furnace; therefore, the service life of the heating resistance wire is effectively prolonged.

The invention relates to the technical field of resistance wire processing, and discloses a wire cutting device for resistance wire processing, the wire cutting device comprises a base and a resistance wire body, the upper surface of the base is fixedly connected with a second mounting rack and a third mounting rack which are horizontally distributed, and the second mounting rack and the third mounting rack are fixed; a first mounting frame is fixedly connected to the position, located on one side of the third mounting frame, of the upper surface of the base, a correcting assembly for straightening the resistance wire body is arranged on one side of the second mounting frame, and a conveying assembly for conveying the resistance wire body is arranged on one side of the second mounting frame. According to the wire cutting device, a worker does not need to manually adjust the resistance wire, the hands of the worker are prevented from being cut by a cutter, the use safety of the wire cutting device is improved, the worker does not need to manually straighten the resistance wire, the use convenience of the wire cutting device is improved, the worker does not need to manually collect the resistance wire, and the labor intensity of the worker is reduced. The time is saved, and the resistance wire cutting efficiency is improved.

The present invention belongs to the technical field of vehicle-mounted transformers, and discloses a vehicle-mounted transformer for a mobile substation, including a transformer body, a square oil storage cabinet is installed on one side of the top of the transformer body, an insulating sleeve assembly is arranged on the other side of the transformer body, a heat dissipation mechanism is arranged on the side of the transformer body, a barrier assembly is arranged between the heat dissipation box and the second air guide module, a resistance wire heater is installed at the bottom of the second air duct, and a blower pump is installed at the bottom of the heat dissipation box. The vehicle-mounted transformer for the mobile substation can achieve uniform heat dissipation of the outer wall of the transformer body through the heat dissipation mechanism. When the environment is low temperature and humid, the heat dissipation mechanism enters a drying state, which can not only achieve the effect of warming the transformer body, but also dry the humid air around the insulating sleeve assembly, thereby ensuring the insulation and use safety of the insulating sleeve assembly, and ensuring the safe and stable use of the transformer.

The present invention discloses a static calibration device and method for a thin film strain gauge deposited in situ on the surface of an aircraft engine turbine rotor blade. The present invention belongs to the field of high temperature strain testing technology. It is used to calibrate a thin film strain gauge deposited in situ on the surface of a rotating component in a high temperature zone such as an aircraft engine turbine rotor blade. The calibration device consists of a resistance wire heater, a turbine engine rotor, a thin film strain gauge deposited in situ on the surface of a turbine engine rotor blade, a thin film thermocouple, and a capacitive distance sensor. The strain of the thin film strain gauge is introduced by the centrifugal force caused by high-speed rotation, and the strain size is calibrated by a capacitive distance sensor; by calibrating the strain sensitivity coefficient of the thin film strain gauge at different temperatures, the decoupling of temperature and strain is achieved. The present invention provides an effective experimental platform and method for the calibration of thin film strain gauges deposited in situ on the surface of rotating components in a high temperature zone of an aircraft engine.

The invention relates to an asymmetric multichannel thermal flow sensor for integrated component detection and a signal processing method, and belongs to the technical field of sensors. The problems that a traditional symmetrical single-channel thermal flow sensor is limited in measuring range, saturated in output, insufficient in measuring precision and single in measuring flow are solved. The sensor comprises a flow inlet cavity, a flow outlet cavity and a measuring pipeline composed of five parallel circular pipelines, the middle pipeline is a component measuring pipeline, and the four pipelines on the periphery are flow measuring pipelines. A probe is arranged in the middle of the component measuring pipeline, a heating resistance wire is arranged in the middle of the flow measuring pipeline, and temperature measuring resistance wires are asymmetrically distributed on two sides. The pipeline is made of aluminum, and fillets are arranged at the joints to optimize fluid flow. The heating resistance wire is a nickel chrome wire, the temperature measuring resistance wire is a platinum wire, the component measuring probe is made of a platinum film, and the surfaces of the platinum film and the platinum film are insulated. An improved Wheatstone bridge circuit is adopted for signal collection, and precision and protectiveness are improved.

The utility model discloses an electric melting pipe fitting which comprises a pipe fitting main body, a melting layer, a heat conduction mechanism, a mounting ring and a blade strip, and a through hole is formed in the axial end of the pipe fitting main body; the melting layer is fixedly mounted on the inner wall of the pipe fitting main body; the heat conduction mechanism is arranged in the pipe fitting body and used for conducting heat to the melting layer. The mounting rings are fixedly mounted at the two axial ends of the pipe fitting main body; the blade strip is fixedly mounted on the radial inner wall of the mounting ring; the multiple blade strips are annularly and uniformly arranged in the axial direction of the mounting ring, and the cutting edge parts of the multiple blade strips face the outer side of the pipe fitting main body; the heat conduction mechanism comprises a resistance wire and a binding post, and the resistance wire is fixedly installed on the inner wall of the pipe fitting body and attached to the outer wall of the melting layer. The two binding posts are connected with the power input end and the power output end of the resistance wire correspondingly and extend out of the pipe fitting body. Through the cooperation of the structure, the melted melting layer is in contact with the outer wall of the pipe fitting to be connected with the scratches, the melting strength can be effectively enhanced, and the connecting quality is improved.

The invention discloses a fire extinguishing water spraying intensity detection method for propellant fire in the field of propellant fire extinguishing. A superspeed deluge system, an ignition system, a charging device and a weighing device are included. The ultra-high-speed deluge system comprises a high-speed detector, a control system, a quick opening valve, a sprinkler head, a water supply pipe, a pressure water supply device and an air supply device; the ignition system comprises a resistance wire, an ignition circuit and an ignition device.The fire extinguishing water spraying intensity detection method for the propellant fire is provided for solving the problems that the propellant fire cannot be extinguished through the water spraying intensity of an existing deluge system, and an ultra-high-speed deluge system cannot be effectively applied to a propellant production site. The problem that an existing propellant powder production place does not have a key parameter of fire extinguishing water spraying intensity is solved, effective application of the ultra-high-speed rain extinguishing technology in the propellant powder production place is achieved, and safety of production personnel and equipment is protected.

The invention relates to a quick-cooling wire embedding mold of a reinforced polyethylene electric melting pipe fitting resistance wire stable embedding device, and discloses a quick-cooling wire embedding mold which is characterized in that a cooling medium is introduced into the hollow wire embedding mold through a cooling pipe and a cooling medium circulation groove to quickly cool a hot-melted polyethylene raw material and the inner wall of a reinforced polyethylene pipe section; and the cooling medium quickly flows back through the return pipe, so that the quick-cooling wire embedding mold is circularly cooled. The device is characterized in that the device is composed of a wire embedding die, a backflow connector, a sealing isolation plate, a cooling vertical groove, a backflow pipe, a backflow hole, a cooling pipe, a cooling connector and a cooling medium circulation groove, the wire embedding die is of a hollow structure, the backflow pipe is arranged in the wire embedding die and located in the middle of the wire embedding die, the backflow hole is formed in the side wall of one end of the backflow pipe, and the cooling medium circulation groove is formed in the sealing isolation plate. A backflow connecting port communicated with the backflow pipe is formed in the other end of the wire embedding mold, the sealing isolation plate is arranged in the wire embedding mold, a cooling medium circulation groove is formed in the sealing isolation plate, and a cooling vertical groove is formed in the inner wall of the side face of the wire embedding mold.

The utility model belongs to the technical field of new energy automobiles, and particularly discloses a new energy automobile high-pressure liquid heater which comprises a heater body, a thick film heating plate, a heat insulation plate, a cover plate and an overheating protection circuit which are sequentially installed from bottom to top. The overheating protection circuit comprises four thermistors Rt1, Rt2, Rt3 and Rt4, an N-type MOS tube, a relay KJ, a heating resistance wire Rh, a resistor R1, a resistor R2, a resistor R3, a low-voltage direct-current power supply and a high-voltage direct-current power supply. According to the thick film heating plate, the water-drop-shaped turbulent flow columns and the turbulent flow teeth are arranged, so that the heat conduction efficiency and the heat exchange efficiency of the thick film heating plate in liquid are improved, and better convective heat exchange is realized; and the overheating protection circuit is arranged, so that the reliability of the heater during over-temperature protection is improved, and the heater is not only controlled by software.

The invention belongs to the technical field of asphalt metering equipment, and particularly relates to a metering device for preventing rapid cooling of asphalt, the metering device comprises a workbench, and an outer cylinder, a weighing scale and a material conveying structure which are respectively mounted on the workbench, a weighing barrel is placed at the upper end of the weighing scale, and an inner cylinder is fixedly mounted on the inner bottom wall of the outer cylinder; a resistance wire is mounted on the inner wall of the outer barrel and used for heating asphalt in the inner barrel, and a stirring assembly is mounted in the outer barrel and used for uniformly heating the asphalt in the inner barrel; by means of the precisely designed stirring assembly, asphalt in the inner barrel can be heated more evenly. The stirring piece is driven by the rotating rod I to go deep into the asphalt for full stirring, so that the problem of non-uniform heat distribution is effectively avoided; the uniform heating mode not only improves the heating efficiency of the asphalt, but also remarkably reduces the negative influence on the later weighing accuracy caused by non-uniform heat, and ensures the accuracy and consistency of asphalt treatment.

The utility model discloses a high-temperature specific heat capacity tester which comprises a main control cabinet, a heating device, a connecting sleeve and a detection device, the heating device is fixedly installed on the detection device through the connecting sleeve, the detection device is fixedly installed on the main control cabinet, the heating device comprises an electric furnace, a test sample is hung in a heating hearth through a high-temperature-resistant wire to be heated, and the electric furnace is connected with the electric furnace. The detection device comprises an outer box body connected with the connecting sleeve, a constant-temperature heat insulation screen cover is installed in the outer box body, a temperature-controllable heat insulation screen cover is installed in the constant-temperature heat insulation screen cover through an insulation support, a heat measuring block is installed in the temperature-controllable heat insulation screen cover through an insulation support, and an electric heating tube and a thermocouple are arranged on the heat measuring block. A heating resistance wire is arranged on the side wall of the temperature-controllable heat insulation shield, a temperature difference thermopile is arranged between the heating resistance wire and the calorimetric block, and a copper pipe used for introducing constant-temperature hot water is wound on the side wall of the constant-temperature heat insulation shield. The high-temperature specific heat capacity tester disclosed by the utility model is high in measurement precision, simple to operate and small in size.

The invention discloses a wire drawing device for alloy resistance wire preparation, and belongs to the technical field of alloy resistance wire preparation.The wire drawing device for alloy resistance wire preparation comprises a base, a supporting box is fixedly connected to the upper surface of the base, and a pay-off mechanism is fixedly connected to one side of the supporting box; the side, close to the pay-off mechanism, of the supporting box is fixedly connected with a supporting frame, the upper surface of the end, away from the pay-off mechanism, of the base is fixedly connected with a winding mechanism, the side, close to the pay-off mechanism, of the supporting frame is fixedly connected with a wire feeding pretreatment mechanism, and the side, away from the wire feeding pretreatment mechanism, of the supporting frame is fixedly connected with a wire pulling mechanism. By arranging the wire feeding pretreatment mechanism and the wire drawing mechanism, an alloy resistance wire automatically penetrates through the wire drawing die, the working efficiency is greatly improved, meanwhile, by arranging the supporting frame and the wire drawing die, heat can be rapidly dissipated in the wire drawing process, and therefore the wire drawing speed can be increased, and the production efficiency is greatly improved.

An annular body includes a base portion and a resistance wire located in the base portion and including first and second resistance wire portions. The first resistance wire portion includes first regions arranged at intervals in the circumferential direction and each including a region in which a first portion extending in a direction including components in both the radial direction and the circumferential direction is repeatedly provided in the circumferential direction. The second resistance wire portion includes the second regions arranged at intervals in the circumferential direction and each including a region in which a second portion extending in a direction including components in both the radial direction and the circumferential direction is repeatedly arranged in the circumferential direction.

The invention discloses an in-situ high-temperature loading device and a mechanical property testing system and method.In the device, the outer side face of a heat conduction cylinder is evenly heated through a heating resistance wire which is electrified and heated, so that the top end face, making contact with a sample material, of the heat conduction cylinder is evenly heated, and therefore a high-temperature environment can be provided for the sample material; and moreover, a uniform high-temperature environment is provided, so that the influence of non-uniform temperature distribution on a mechanical performance test result is avoided. In the system, the temperature provided by the in-situ high-temperature loading device can be controlled through the main control module, the in-situ high-temperature loading device and the cooling module can also be controlled through the main control module, the provided temperature is controlled through the cooperation of the in-situ high-temperature loading device and the cooling module, and the temperature of the in-situ high-temperature loading device can be controlled under the condition that the heating resistance wire is not heated. The cooling module is controlled to work through the main control module, and a low-temperature environment is provided for the sample material.

The invention relates to the technical field of dust monitoring, in particular to a dust monitoring device and method for environment supervision of a building construction site, and the device comprises a collection cylinder, a filter plate is mounted in the collection cylinder, a plurality of filter holes are uniformly formed in the filter plate, and the inner wall of the collection cylinder is divided into a first cavity and a second cavity by the filter plate; a through groove is formed in the position, located at the bottom of the first cavity, of the collecting barrel, and a drying pipe and an anti-blocking mechanism are further installed on the collecting barrel. Therefore, gas passing through the interior of the drying pipe is heated, the possibility that dust is adhered to the interior of the device due to combination of dust and water vapor in the air in humid weather, and the content of dust in the air is reduced is avoided, and the monitoring precision is improved.

The present invention specifically relates to a variable-parameter satellite vibration isolator and an isolation method. The vibration isolator includes a thermistor, a metal shell, a resistance wire, a filling polymer, a connector, an upper fixed support, a heat insulation component, a lower fixed support and a wire; the filling polymer, the connector, the upper fixed support and the lower fixed support are all annular structures. The outer surface of the connector is connected to the inner wall of the upper fixed support. The outer wall of the upper fixed support is connected to the inner wall of the upper half of the filling polymer. The outer wall of the lower fixed support is connected to the inner wall of the lower half of the filling polymer. The inner wall of the lower fixed support and the bottom of the connector and the bottom of the upper half of the filling polymer enclose a bolt installation cavity. The outer wall of the filling polymer is provided with a metal shell. A resistance wire is wound around the outside of the metal shell. A heat insulation component is provided outside the resistance wire. The satellite control unit is connected to the thermistor and the resistance wire respectively through two wires.

The invention discloses a double-temperature-zone wafer heater temperature control system and method. The system comprises a wafer heater, a main unit, a measuring unit and a control unit. The wafer heater comprises an inner area heating disc and an outer area heating disc; the measuring unit comprises a temperature measuring device and a voltage and current measuring device; the control unit obtains a resistance temperature coefficient based on the heating temperature of the internal resistance wire and the voltage and current values of the internal heating line, calculates the heating temperature of the external resistance wire by combining the voltage and current values of the external heating line, and further adjusts the on-off of the corresponding relays to control the temperatures of the two areas. The control method comprises the following steps: acquiring the heating temperature of an internal resistance wire and voltage and current values of internal and external heating lines; obtaining the resistance temperature coefficient of the internal resistance wire and the heating temperature of the external resistance wire based on the data; according to the invention, the problem of double-temperature-zone heating control only equipped with a single-temperature-zone temperature measurement sensor is solved, and accurate measurement and control of the temperatures of the inner and outer temperature zones of the wafer heater are realized.

An electric heating assembly may include a sheath, a resistive wire, a thermally conductive electrical insulation, and a tubular body. The sheath may define an enclosed volume along a longitudinal length between a first end portion and a second end portion. The resistive wire may be disposed within the enclosed volume to generate heat in response to an electrical current. The thermally conductive electrical insulation may be radially positioned between the resistive wire and the sheath. The tubular body may be disposed radially inward from the sheath and define a vent channel extending from a vent inlet disposed within the sheath to a vent outlet held outside of the sheath.

The invention relates to the technical field of amorphous TiC ceramics, in particular to a wear-resistant plate based on an amorphous TiC ceramic wear-resistant coating and a surfacing process thereof, and the wear-resistant plate comprises the following raw materials in parts by weight: 20-40 parts of multi-element powder, 70-80 parts of Ti powder and 20-30 parts of C powder; the preparation process of the multi-element powder comprises the following steps: step 1, synthesizing Al2O3-Cr2O3 core-shell particles through a sol-gel method; 2, mechanical alloying is carried out; 3, sintering is conducted, and multi-element powder is obtained; according to the invention, Al2O3 coated Cr2O3 core-shell particles are adopted to solve the problem of reinforcement phase / matrix interface failure; in-situ amorphous TiC forming realizes instantaneous high temperature and rapid cooling under the powder blank density of 60-80% through resistance wire short-circuit self-propagating reaction, and breaks through amorphous phase preparation limitation.

The invention relates to the technical field of equipment icing prevention, in particular to an icing prevention method and device for a bridge inhaul cable. The bridge inhaul cable comprises an inhaul cable steel wire, a steel wire sheath, a heat conduction coating and a plurality of resistance wires which are sequentially arranged from inside to outside, wherein the resistance wires are spirally laid on the heat conduction coating. The method comprises the steps of monitoring environment humidity, temperature of water drops in the environment, diameter of the water drops in the environment and surface temperature of the bridge cable; predicting the icing probability of the bridge inhaul cable according to the environment humidity and the surface temperature of the bridge inhaul cable, and predicting the icing form of the bridge inhaul cable according to the water drop temperature and the water drop diameter in the environment; the ice coating forms comprise glaze ice coating, rime ice coating, mixed rime ice coating and snow rime ice coating; under the condition that the predicted icing probability of the bridge inhaul cable exceeds a first preset value and the icing form of the bridge inhaul cable is glaze icing or mixed glaze icing, a resistance wire of the bridge inhaul cable is controlled to act according to a preset mode; the problem that the anti-icing effect is poor can be effectively avoided.

The utility model relates to a heating assembly and a dish warming device, the heating assembly comprises a heating film, a panel and a heat insulation layer, the heating film comprises a first insulation layer, a heating layer and a second insulation layer, the heating layer comprises a graphene layer and a conductive layer, and the heating film is arranged between the panel and the heat insulation layer; the graphene layer is arranged on the conductive layer; the graphene layer is composed of graphene channels with two ends, and the graphene channels are continuously and uniformly arranged. The heating assembly and the dish warming device have the advantages that under the condition that the same heat is output, the resistance wire is of a winding type, the center temperature is very high, the graphene layer is used for heating in a face mode, heat conduction is fast and uniform, the temperature is far lower than that of the resistance wire, larger power density can be achieved, and the heating efficiency is improved. And higher heating rate and effective output power are realized.

A first heating pipe, a second heating pipe and a third heating pipe are arranged in the device in the radial direction, each heating pipe comprises a wire section and a resistance section, the wire section is used for transmitting electric energy and comprises a high-temperature wire and a first mineral insulating material which are located in a protection pipe, and the resistance section is used for transmitting resistance to the high-temperature wire. The first mineral insulation material is filled in the protection tube and is used for insulation and heat conduction between the high-temperature wire and the tube wall; the resistance section is a heating section and comprises a high-temperature resistance wire located in the protection tube and a first mineral insulation material, and the first mineral insulation material is filled in the protection tube and used for insulation and heat conduction between the high-temperature resistance wire and the tube wall; the high-temperature wire is connected with the high-temperature resistance wire; and the tail ends of the three high-temperature resistance wires are connected to form a three-phase star-shaped balanced heating circuit, so that uniform heating is realized. And the protection tube is arranged, so that higher temperature and higher heating power can be borne, and the high-temperature wire and the high-temperature resistance wire are protected.