785 results about "Resistance wire" patented technology

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 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 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 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 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.

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 utility model discloses electric heating maintenance equipment for concrete pouring in winter, which comprises a fixed base, a supporting mechanism mounted at the top end of the fixed base, an insulating plate mounted at the top end of the supporting mechanism, a transformer fixedly mounted at the top of the insulating plate, and a fixing piece arranged on one side of the fixed base. According to the electric heating maintenance equipment for concrete pouring in winter, the resistance wire with the insulating rubber skin is laid in a concrete structure, and after the resistance wire is powered on, two electrodes of the resistance wire form a conductive loop through unsolidified concrete, so that the resistance wire is fixed to the bottom end of the fixing part, and the resistance wire is fixed to the bottom end of the fixing part. At the moment, the secondary current of the transformer is large, the wire is heated and releases heat energy, the heat can be transmitted to concrete in a loss mode, and due to the fact that the heating resistance wire is embedded in the concrete, the generated heat can be completely transmitted to a concrete member. Therefore, it is guaranteed that the concrete is cured under the positive temperature condition.

The invention provides a building curtain wall flatness detection device, and relates to the technical field of curtain wall plane detection, the building curtain wall flatness detection device comprises a shell, and four corners of the shell are provided with connecting columns; the edges of four corners of the soft film are respectively fixed at one end, far away from the shell, of each connecting column and are unfolded in a tiled state; the plurality of resistance wires are arranged in the soft film in a criss-cross manner, the resistance value of the soft film is changed when the soft film is stretched and deformed, and the plurality of resistance wires are respectively provided with an independent current loop; the display assembly is arranged on the shell, the resistance wires are electrically connected with the display assembly, and the display assembly is used for partitioning the longitudinally and transversely arranged resistance wires and is used for displaying corresponding current or voltage change data based on resistance changes of the resistance wires. According to the invention, the flatness of the curved building curtain wall can be conveniently detected, and the detection efficiency and accuracy are significantly improved.

The invention relates to the technical field of glass product production and processing equipment, and discloses an energy-saving glass bottle annealing device which comprises an annealing furnace body, an adjusting assembly is arranged in the annealing furnace body, an air cooling assembly is arranged in the annealing furnace body, and a circulating water pipe is installed in a main conveying belt. A nitrogen conveying pipe is installed in the annealing furnace body, a plurality of infrared heaters are arranged in the annealing furnace body, a plurality of heat insulation plates are installed in the annealing furnace body, and high-temperature resistance wires installed through insulation fixing blocks are arranged on the inner sides of the heat insulation plates. According to the invention, the position and spacing adjustment of the infrared heater is realized through the adjusting assembly, the air curtain isolation fan and the heat insulation gate cooperate to block heat dissipation, and meanwhile, the air cooling assembly, the circulating water pipe and the nitrogen conveying pipe are utilized to construct a multi-stage cooling system, so that the energy consumption of the device is reduced, and the annealing quality and the production efficiency of glass bottles are improved.

The invention belongs to the field of nano material preparation, and particularly discloses a preparation method and application of a narrow-diameter-distribution carbon nanotube, and the preparation method comprises the following steps: heating raw material mixed gas to 900-1500 DEG C for reaction, and introducing pulse gas in the reaction process to prepare the carbon nanotube, the raw material mixed gas contains a catalyst, a carbon source and an etching agent; the heating comprises at least two methods of plasma heating, microwave heating, silicon carbide rod heating, silicon molybdenum rod heating, resistance wire heating and electromagnetic induction heating. According to the preparation method disclosed by the invention, the high-quality narrow-diameter-distribution single-wall / double-wall carbon nanotubes can be prepared on a large scale, the single-time continuous operation time in actual production exceeds 45h, the unit yield can reach more than 190g / h, the purity of the product single-wall / double-wall carbon nanotubes is greater than 85%, the average G / D ratio is greater than 85, and the quality and the yield of the prepared carbon nanotubes are remarkably improved.

The invention relates to the technical field of material heat treatment, and discloses a transverse magnetic field heat treatment furnace which is characterized by comprising a rack, a vacuum pump, a hydraulic push rod, a furnace body, a circulating heat dissipation fan, a heating resistance wire, a second heat preservation layer, a magnetizing coil and a cooling fan. The circulating heat dissipation fan is connected with the top of the furnace body and extends into an inner cavity of the furnace body, the furnace body is connected with the vacuum pump through the hydraulic push rod, the heating resistance wire is wound on the outer surface of the furnace body and is of a spiral structure, the second heat preservation layer wraps the heating resistance wire and the outer surface of the furnace body, and the magnetizing coil is arranged on the outer surface of the second heat preservation layer. And the magnetizing coil is connected with the cooling fan. The temperature difference in the furnace can be reduced, the temperature uniformity in the furnace can be improved, the qualification rate of the annular magnetic core in the furnace can be increased, hot airflow can flow more uniformly in the furnace, heat accumulation is avoided, the phenomenon that the local temperature is too high or too low is reduced, and the temperature stability is improved.

The invention discloses a device and a method for preparing tantalum powder by reducing gaseous magnesium, and solves the problems of high oxygen content, poor particle uniformity, incomplete reaction and the like in the prior art. The device adopts a vertical multi-layer reaction furnace structure, and realizes efficient reduction of tantalum oxide through heating of a resistance wire and reaction with gaseous magnesium. The method comprises gaseous magnesium reduction and product post-treatment. The oxygen content of the tantalum powder prepared through the method is controlled to be 3000-6000 ppm, the specific volume reaches 80000-100000 mu F.V / g, the apparent density ranges from 1.5 g / cm < 3 > to 1.8 g / cm < 3 >, particle size distribution is uniform, and the method is suitable for large-scale production of electronic-grade tantalum powder.

The invention discloses a harmonic reducer integration-based strain torque sensor, and relates to the technical field of sensors, the harmonic reducer integration-based strain torque sensor comprises an annular strain gauge and a signal acquisition module, and the annular strain gauge is electrically connected with the signal acquisition module; the annular strain gauge is mounted on the bottom surface of the flexible gear and is concentric with the flexible gear; the signal acquisition module is mounted outside the hollow inner shaft of the flexible gear; during working, when output power of the flexible gear is subjected to resistance, the bottom surface of the flexible gear generates strain, the annular strain gauge converts a strain signal into an analog voltage signal through a Wheatstone bridge formed by a resistance wire grid, the analog voltage signal is output to the signal acquisition module, and a force value signal is obtained after digital-to-analog conversion; by arranging the annular strain gauge on the bottom surface of the flexible gear, real-time detection of output torque is realized, extra flexible introduction of deformation of the peripheral surface of the flexible gear is avoided, structural deformation is reduced, interference of rotation of a wave generator on signals is effectively suppressed through a Wheatstone bridge design, and measurement precision and stability are ensured.

The invention discloses a novel gallium nitride reaction chamber heating structure and a use method thereof. The novel gallium nitride reaction chamber heating structure comprises a high-temperature furnace (103), a carrying table (106) and a gallium boat (101), the thermocouple A (102) is arranged on the side wall of the high-temperature furnace and is used for detecting the temperature in the furnace; the quartz cover (104) covers the lower part of the gallium boat and the carrying platform so as to form a reaction chamber; the manipulator (108) is mounted at the bottom of the high-temperature furnace, and the top of the manipulator bears the carrying table; the thermocouple B (109) is arranged in the manipulator and is used for detecting the temperature of the carrying platform; and the resistance wire (110) is mounted at the top of the manipulator and is used for heating the carrying table. The method has the beneficial effects that the corrosion of the pipe wall of the gas outlet of the gallium boat can be effectively reduced, the service life of the gallium boat is prolonged, the epitaxial film defects are reduced, and the single crystal growth quality is improved.

The utility model relates to a nuclear power station super-long pole temperature measuring circuit and device, the circuit comprises a plurality of multi-point temperature measuring assemblies, and each multi-point temperature measuring assembly comprises a plurality of platinum film resistors which are connected in parallel and have the same nominal resistance value; the multi-point temperature measurement assemblies are connected in series so as to form the ultra-long rod multi-point temperature measurement chain with the equivalent nominal resistance value being the set nominal resistance value. The resistance wire can replace the existing platinum wire type resistance wire, and the cost and the measurement difficulty of the characteristic test of the condenser are reduced.

The utility model provides an optical fiber fusion splicer heating device and an optical fiber fusion splicer, the optical fiber fusion splicer heating device comprises a base, an upper cover is arranged on the upper side of the base, a heating mechanism is arranged in the base and the upper cover, a connecting mechanism is arranged between the base and the upper cover, and placing grooves are formed in the surfaces of the two sides of the base; a heat-shrinkable sleeve is arranged in the base, an optical fiber body is arranged in the heat-shrinkable sleeve, and a fixing mechanism is arranged between the base and the upper cover. The heating mechanism comprises arc-shaped heat conduction plates, and the two arc-shaped heat conduction plates are fixedly installed in the base and the upper cover correspondingly. By using the heating mechanism, the resistance wire works to heat the arc-shaped heat conduction plates, and the two arc-shaped heat conduction plates are matched to quickly heat the middle parts of the two arc-shaped heat conduction plates, so that not only is the contact area with the heat-shrinkable sleeve increased, but also quick and uniform transfer of heat is ensured, the heating time is effectively shortened, and the heating efficiency is improved. And the working efficiency is improved.

The utility model provides a kind of durability test testing machine of automobile sealing strip, it belongs to automobile sealing strip durability test technical field, it includes fixed frame and fixed plate, the top of the fixed frame is fixedly connected with fixed plate, the top of the fixed plate is fixedly connected with shelter frame.The utility model adds temperature table, semiconductor refrigeration piece cold end and electric heating tube by fixed plate, temperature table detects the temperature of the environment where the sealing strip to be tested is located, when it is needed to test sealing strip in low-temperature environment, semiconductor refrigeration piece cold end absorbs heat, when it is needed to test sealing strip in high-temperature environment, resistance wire inside electric heating tube continuously delivers heat to the inside of sealing strip via electrothermal effect, and then the test effect of testing machine is improved.

The utility model discloses a detection device for detecting the opening amount of a load box, and the device comprises a load box which comprises an upper supporting plate and a lower supporting plate, a hydraulic mechanism is disposed between the upper supporting plate and the lower supporting plate, and the hydraulic mechanism is used for driving the upper supporting plate and the lower supporting plate to be separated from each other in the vertical direction; the mounting pipe is arranged on the lower supporting plate, a slide rheostat is arranged in the mounting pipe and comprises a sliding piece and a resistance wire which are in contact with each other, the sliding piece is electrically connected with a display module through a first connecting wire and is fixedly arranged relative to the upper supporting plate, the resistance wire is connected with a power source through a second connecting wire, and the second connecting wire is arranged on the lower supporting plate; the power supply is electrically connected with the display module. The detection device for detecting the opening amount of the load box with the structure can detect whether the load box is normally opened or not in a self-balance test, can facilitate people to analyze the opening amount of the load box, and provides a guarantee for the accuracy of the self-balance test.

The embodiment of the invention provides a resistance wire pipeline heating temperature control system and method. The system comprises a cooperative temperature control module, a first detection module, a plurality of resistance wire heating modules and second detection modules corresponding to the resistance wire heating modules. The first detection module sends the environment temperature of the pipeline to the cooperative temperature control module; the cooperative temperature control module calculates initial heating power based on the environment temperature and the target temperature of each resistance wire heating module, and the initial heating power is included in a heating instruction to be sent to the corresponding resistance wire heating module; the resistance wire heating module heats the pipeline according to the initial heating power; the second detection module sends the heating temperature, detected in the current time period, of the corresponding resistance wire heating module to the cooperative temperature control module; and the cooperative temperature control module calculates to-be-adjusted heating power of the next time period, contains the to-be-adjusted heating power in a heating instruction and sends the heating instruction to the corresponding resistance wire heating module for subsequent heating temperature control, so that the temperature control precision and the heating uniformity of the pipeline are improved, and the energy consumption is reduced.

A safety early warning device for a hard hyperbaric oxygen chamber comprises elastic resistance wires arranged on the surface of a chamber body of the hard hyperbaric oxygen chamber; the pressure sensor is used for monitoring the pressure intensity in the chamber in real time and identifying the normal pressure state and the pressurization state of the hard hyperbaric oxygen chamber; the resistance monitoring circuit is connected with the elastic resistance wire and is used for detecting and collecting the resistance value of the elastic resistance wire in each state in real time; the signal processing circuit is connected with the pressure sensor and the resistance monitoring circuit, and is used for comparing the deviation value of the resistance value, judging that the cabin material has plastic deformation when the deviation value exceeds a preset threshold value, and receiving a pressure feedback signal of the pressure sensor; the emergency response equipment is connected with the signal processing circuit and used for receiving the monitoring result signal or the control signal of the signal processing circuit so as to carry out corresponding early warning operation, and the hard hyperbaric oxygen chamber and the safety early warning device thereof have the advantages of being safe, reliable and timely in response when the chamber body deforms plastically.

The utility model discloses a horizontal split box type high temperature furnace, which adopts a long-life ceramic heating body, a temperature control system adopts a PID (Proportion Integration Differentiation), a controllable module and a temperature sensor, the temperature sensor acquires the temperature of the furnace body in real time and feeds back the acquired temperature signal to the PID, and the PID changes the output signal according to the temperature change. An output signal of the PID is input into the controllable module, so that voltage is output and applied to a heating element ceramic heating body, a temperature control system forms a closed single circulation system, the temperature in the furnace can be accurately controlled, and the service life of the heating body is longer than that of a traditional resistance wire. The split box body structure is adopted, and the heating body is easy and convenient to replace. In addition, due to the adoption of the horizontal design, the requirements of transverse high-temperature loading equipment on the horizontal high-temperature furnace can be met.

The utility model discloses a thermal radiation control device of a photoetching hot plate device, which comprises a heating seat, a controller, a temperature controller, a hot plate, a resistance wire and an auxiliary heating component, the controller is fixedly mounted on the heating seat, the temperature controller is positioned inside the heating seat, and the bottom of the hot plate is fixedly mounted at the top of the temperature controller. According to the utility model, the temperature controller is used for controlling the resistance wire to heat, the heat of the resistance wire is transmitted to the heat-conducting gel layer, the heat-conducting gel layer has better heat conductivity and flowability, the heat-conducting gel layer is integrally heated more uniformly, the heat-conducting gel layer is more uniform in conduction temperature, the top of the hot plate is heated uniformly, and a semiconductor wafer is heated uniformly; the air extracting pump and the electric heating pipe are started, the air extracting pump extracts outside air through the air inlet pipe, the outside air needs to be filtered through the filter and then enters the air outlet pipe, the heating cylinder, the extension pipe, the heat pipe and the hot air opening to be sprayed out, and the sprayed hot air is used for preventing the outside air from making contact with the top coating glue of the semiconductor wafer.

The utility model relates to the technical field of master batch machines, and discloses a double-color master batch machine which comprises an installation shell, a control display panel is fixedly installed on the front face of the installation shell, two sets of fixed partition plates are fixedly installed on the inner wall of the installation shell, and annular holes are formed in the tops of the fixed partition plates. And two groups of supporting frames are fixedly mounted at the top of the mounting shell. A motor I is arranged to drive a pinion to rotate, so that a first bull gear and a second bull gear which are meshed with the pinion are driven to synchronously rotate, independent and synchronous rotation of two heating and stirring barrels is realized, and heating resistance wires are uniformly distributed on the outer walls of the heating and stirring barrels in a matched manner, so that rapid and uniform heating of raw materials is ensured; and the motor II forcefully stirs the raw materials through the stirring rod and the anchor type stirring rod, so that the raw materials are fully mixed, and the effects of improving the stirring efficiency and the quality uniformity of the master batch are achieved.

The utility model belongs to the technical field of unmanned aerial vehicles, and particularly relates to an anti-overload battery high-voltage protection module and a fuel hybrid unmanned aerial vehicle, through arrangement of a resistance wire, a triode, an mos tube and a voltage stabilizing diode, the anti-overload battery high-voltage protection module can enter a working state when the voltage of a generator is higher than the voltage of a battery and exceeds a specific value, and the fuel hybrid unmanned aerial vehicle is protected. At the moment, the anti-overload battery high-voltage protection module can be matched with the battery voltage stabilization adjusting system to play a role at the same time, the battery voltage stabilization adjusting system can quickly pull down the accelerator steering engine to a specific value so as to reduce the generating capacity, and the anti-overload battery high-voltage protection module can shield part of hardware functions of the battery voltage stabilization adjusting system so that the battery can serve as a large capacitor. Excessive electric energy is rapidly absorbed, and the effect of voltage stabilization is achieved.

The invention discloses a conductive particle reinforced elastomer self-sensing driver which comprises a liquid crystal elastomer matrix and conductive particles, the conductive particles form a continuous or semi-continuous conductive network in the matrix, and the invention relates to the technical field of soft robot driving and intelligent materials. According to the conductive particle reinforced elastomer self-sensing driver and the preparation method thereof, the conductive particles serve as a heating element and a sensing element at the same time, an external temperature sensor or displacement sensor is not needed, the system structure is greatly simplified, resistance feedback directly corresponds to a deformation state, heat conduction delay is bypassed, and intelligent compensation is conducted in combination with a neural network. The conductive particles are uniformly distributed, the local hot spot problem of the resistance wire is avoided, the conductive particles and the LCE substrate are physically / chemically combined, no mechanical interface exists, compared with an embedded metal wire, the conductive particles have relatively small influence on the rigidity of the LCE, excellent flexibility is kept, and the LCE is suitable for the face of an expression robot and other applications needing to be attached to the skin.

This invention relates to the field of carbon nanotube preparation equipment technology, and particularly to a gas heating device, a fluidized bed reactor, and a method for preparing carbon nanotubes. The gas heating device includes a heating tube through which a carrier gas flows, and a heating component for heating the carrier gas is fitted over the heating tube. This invention provides a fluidized bed reactor with a reasonable overall structure, convenient installation, and good practicality and potential for large-scale promotion. Specifically, this invention uses electromagnetic induction to uniformly heat the entire heating tube, thereby rapidly and stably heating the carrier gas to a set temperature, ensuring a uniform temperature field distribution within the reaction chamber, and effectively improving the consistency of carbon nanotube growth and product quality. Furthermore, by eliminating traditional resistance wire heating, problems such as high-temperature aging and burnout of the resistance wire are avoided. The equipment has no easily damaged parts, resulting in a low failure rate, reduced maintenance costs, and a significantly extended service life.

The invention discloses ultrahigh-hardness and high-purity stainless steel forging equipment and process, and relates to the field of stainless steel forging.The ultrahigh-hardness and high-purity stainless steel forging equipment comprises a heating furnace and a rotary supporting seat, a first roller conveying belt and a second roller conveying belt are installed on the two sides of the heating furnace correspondingly, and a first door assembly is installed on one side of the heating furnace; a second door assembly is mounted on the other side of the heating furnace; the top of the rotary supporting base is rotationally connected with a cooling station, a hydraulic lifting rod is installed in the center of the top of the rotary supporting base, and an electric chuck is installed at the other end of the hydraulic lifting rod. According to the ultrahigh-hardness high-purity stainless steel forging equipment and process, the temperature control and cooling process is optimized, and the final mechanical property of a product is ensured. The heating resistance wire is accurately controlled through the mechanical thermostat, the heating temperature is stabilized within the accurate range of 1000 + / -20 DEG C, the heat preservation time is set according to the thickness of a workpiece, and reliable guarantee is provided for the austenitizing process.

The utility model relates to the technical field of electric heating tubes, in particular to a mini-type electric heating tube which comprises a connecting plate, a heat exchange tube is arranged at the bottom of the connecting plate and is of a U-shaped structure, the two ends of the heat exchange tube are both fixed to the bottom of the connecting plate, two supporting columns are further installed at the bottom of the connecting plate and both extend into the heat exchange tube, and the heat exchange tube is fixed to the connecting plate. Containing grooves are formed in the side faces of the two supporting columns, heating resistance wires are arranged in the containing grooves, electrode columns are connected to the top of the connecting plate, the two heating resistance wires are connected with the corresponding electrode columns, and a first arc-shaped heat conduction plate and a second arc-shaped heat conduction plate are arranged on the side face of the heat exchange pipe. The second arc-shaped heat-conducting plate abuts against the end of the first arc-shaped heat-conducting plate. The heating resistance wire can be supported through the supporting columns, then the heat exchange pipe can be wrapped through the first arc-shaped heat conduction plate and the second arc-shaped heat conduction plate, the heat exchange pipe is protected, and the protection effect is improved.

The present invention discloses an annealing furnace with uniform internal circulation temperature for annealing glass products and a method for using the same, and belongs to the technical field of glass product manufacturing. A groove 1 is provided on the upper surface of the base, two slide grooves 1 are provided in the groove 1, a conveying platform is provided in the groove 1, and the conveying platform is composed of two plates 1, each of which is provided with a rocker 1 at the lower end, and both are movably connected to the slide groove 1; the annealing furnace is arranged in the groove 1, a movable door panel is provided at the front end of the annealing furnace, a heating plate group is provided on the inner wall of the annealing furnace, a rotating rod is provided at the bottom of the annealing furnace, and a tray is provided at the upper end of the rotating rod. The present invention solves the existing problem that the position of the product in the furnace is different from the distance between the heating resistance wire, which also affects the heating of the product surface and directly affects the production quality of the product. The internal temperature is made more uniform by the heating plate group, and the heating of the glass product is also more stable. The distance between the product and the rocker 2 and the rocker 3 is changed, and the heating position is changed under the action of the slider 4 and the electric roller 2.