28results about How to "Fast thermal response" patented technology

The invention relates to the technical field of quality detection, in particular to a welding seam quality detection method based on machine vision. The method comprises the following steps: acquiring a surface image of a welding seam through a visible light camera, and dividing the surface image of the welding seam into a plurality of sections; according to the surface image of each section, generating a thermal excitation parameter time sequence change sequence of each section through a preset heating parameter time sequence generation model; performing thermal excitation heating on the welding seam area of each section according to the thermal excitation parameter time sequence change sequence of each section; in the thermal excitation heating process, obtaining a plurality of infrared images on each segment edge time sequence through an infrared camera to obtain an infrared image time sequence change sequence of each segment; and detecting the weld quality of each section through a preset weld quality detection model according to the infrared image time sequence change sequence of each section. According to the welding seam quality detection method based on machine vision, the accuracy of welding seam quality detection can be improved.

The invention discloses a phase transition thermal response gel based on an ionic liquid / water binary solvent, and a preparation method and application thereof. The phase transition thermal response gel system comprises an N-isopropylacrylamide (NIPAm) monomer, an initiator, an accelerator, an ionic liquid and water. NIPAm is used as a thermal response unit, the introduction of the ionic liquid replaces a common cross-linking agent for hydrogel polymerization, and the interaction of multiple hydrogen bonds and ions formed between the ionic liquid and a poly N-isopropylacrylamide (PNIPAm) chain endows the system with the characteristic of phase transition. The phase transition thermochromic intelligent window of the ionic liquid / water binary solvent prepared by the invention has the characteristics of high light transmittance, fast response, adjustable response temperature and good stability, and overcomes the defects that the traditional thermochromic hydrogel generates serious volume shrinkage after generating long-term thermochromic circulation and the thermochromic performance is reduced; and a certain technical support is provided for the application of the thermochromic intelligent window.

The invention provides a composite phase change heat storage material and a preparation method thereof, and belongs to the technical field of phase change heat storage materials. The nitrogen quantum dot doped porous carbon aerogel is used as a load carrier, meanwhile, the acidified paraffin is used as a phase change heat storage agent, and the titanium dioxide-carbon nanotube composite material is added for combined action, so that the phase change latent heat and the heat conductivity coefficient of the composite phase change heat storage material can be effectively improved, and good cycle stability is ensured.

The utility model belongs to temperature monitoring technical field discloses a kind of lithium battery temperature real-time monitoring equipment, including shell, shell inner wall is connected with lithium battery group, the center position of lithium battery group one end is connected with heat conduction block, and the outer end of lithium battery group is connected with multiple ducts, the scheme is in lithium battery group outside along the length direction of battery Multiple fitting ducts are laid out, and heat-conducting oil is filled in duct interior, the joint action of heat-conducting oil and heat block, the heat generated by battery surface local is quickly, evenly guided to heat conduction block and thermistor, the efficient real-time monitoring of whole battery temperature is realized, the structure can greatly improve the response speed to local overheating phenomenon, reduce the error caused by point measurement delay or measuring point offset, with fast thermal response, high thermal coupling degree, strong adaptability Advantage, significantly enhance the safety and stability of lithium battery system under complex working conditions.

The utility model discloses a kind of adaptive control circuit of heating body, including MCU temperature control circuit, temperature control circuit, temperature feedback device, current detection circuit, voltage detection circuit, protection detection circuit and temperature display device.The control circuit can automatically identify the heating core type connected, according to the deviation of set temperature and actual temperature output PWM control signal, drive temperature control circuit to carry out temperature rising or cooling adjustment;Temperature, current, voltage are monitored in real time by a variety of detection circuits, and protection mechanism is started under abnormal state, simultaneously, working state is fed back in real time by display device.The control circuit is strong in adaptability, safe and reliable, and is applicable to a variety of heating application scenarios.

The present invention provides a microfluidic chip, a microfluidic chip assembly and a digital nucleic acid detection sampling device. The microfluidic chip comprises: a flow channel layer, the flow channel layer is provided with a detection flow channel for accommodating a detection sample; the flow channel layer is also provided with a liquid inlet, the liquid inlet is connected to the detection flow channel; a reagent well plate, the reagent well plate is suitable for pre-installing detection reagents; the reagent well plate is provided with a plurality of micropores penetrating the reagent well plate from the thickness direction; the flow channel layer is provided with a receiving groove, the reagent well plate is suitable for being clamped in the receiving groove; the detection flow channel is located at the bottom of the receiving groove, when the reagent well plate is clamped in the receiving groove, the micropore is directly connected to the detection flow channel, and the surface of the reagent well plate facing away from the detection flow channel is flush with the surface of the flow channel layer; an encapsulation film layer, the encapsulation film layer is suitable for encapsulating the reagent well plate in the receiving groove, the encapsulation film layer is attached to and covers the surface of the reagent well plate and the surface of the flow channel layer around the reagent well plate; the encapsulation film layer has air permeability. The scheme of the present invention can improve the detection efficiency of the microfluidic chip.

The present invention discloses a composite thermal insulation pipe, comprising a pipe body, an inner liner, a support ring, an inner insulation layer and an outer insulation layer. The inner liner is sleeved inside the pipe body, and a plurality of pressure-equalizing holes are arranged on the inner liner; a plurality of support rings are sleeved on the outer wall of the inner liner at intervals, and the outer edges of the support rings are in contact with the inner wall of the pipe body; the inner insulation layer is arranged between two adjacent support rings to fill the space between the inner liner and the pipe body; the outer insulation layer is sleeved on the outer side of the pipe body. The technical solution disclosed in the present invention can achieve less heat energy loss, shorter time to reach thermal equilibrium, and faster thermal response speed when the pipe is started at room temperature by arranging an inner insulation layer with small specific heat in the pipe body. The technical solution disclosed in the present invention is particularly suitable for long-distance transportation pipelines, which reduces investment cost and operation cost and prolongs service life.

This invention relates to a gradient self-heating material based on phase change-oxidation synergistic regulation, its preparation method, and its application. The gradient self-heating material based on phase change-oxidation synergistic regulation comprises a core layer, a transition layer, and a shell layer connected sequentially; wherein the core layer is a reduced iron powder-phenolic resin composite layer; the transition layer is a gradient transition structure of iron powder, CNT-graphite composite material, and resin; and the shell layer is a catalytic phase change material particle-resin composite layer; the volume percentages of the shell layer, transition layer, and core layer are 20%-30%, 20%-30%, and 40%-60%, respectively. The problem this invention aims to solve is overcoming the interfacial failure challenge between the oxidant and the phase change material through chemical bonding reconstruction, breaking through the thermal accumulation bottleneck by employing a gradient thermal conductivity structure design, and achieving cross-scale synergy across four dimensions: exothermic reaction, heat storage phase change, heat conduction, and dynamic regulation. The final product's thermal response time (temperature greater than 50℃) is <30 seconds.

The invention provides an automobile air pipe structure with a heater, which comprises an air pipe, a mounting platform of the air heater is integrated on the air pipe, the mounting platform of the air heater and the air pipe are integrally formed by injection molding, and a radiator of the air heater is positioned on an air circulation path in the air pipe. And an opening for inserting the air heater into the mounting platform is formed in the air pipe. The automobile air pipe structure with the heater is suitable for a warm air conveying system of an electric automobile or a traditional fuel vehicle, the PTC heating core body is directly integrated in the air pipe, the heat transfer path is shortened, and the energy efficiency is improved; and meanwhile, the temperature control design is simplified by utilizing the self-temperature-limiting characteristic of the PTC, the space and the cost are saved, and firm installation, efficient heat exchange, safety and reliability can be ensured.

The utility model relates to the technical field of heating bodies, in particular to a stainless steel heating tube, which comprises a flange and a tube blank, one end of the tube blank is integrally connected with the flange, the other end of the tube blank extends outwards to form two symmetrically arranged leading-out buckles, the flange and the tube blank are made of stainless steel materials, and the flange and the tube blank are made of stainless steel materials. An isolation insulating layer, a heating layer and an outer insulating layer are sequentially printed on the annular outer surface of the tube blank in a thick film mode, the heating layer comprises a plurality of extraction electrodes and at least one set of resistance circuits, and each extraction electrode is connected with the corresponding resistance circuit. The stainless steel heating tube is simple in structure, compared with a traditional ceramic heating tube, the heat conductivity is high, the temperature rising speed is high, the wall thickness of a tube blank can be reduced to 0.15 mm or below, the size precision is accurately controlled, and meanwhile it can still be guaranteed that the heating tube has good mechanical strength.

The invention belongs to the technical field of multi-point temperature measurement, and discloses a protective shell sleeve applied to a multi-point temperature measuring device and the multi-point temperature measuring device. The protective shell sleeve comprises a shell, one end of which is connected to the connecting seat, and the other end of which extends in a direction far away from the connecting seat; the cross-sectional area of one end, close to the connecting seat, of the shell is larger than that of one end, away from the connecting seat, of the shell; the shell is provided with a plurality of hole channels for the temperature measuring elements to extend out. The distances between the ends, away from the connecting base, of any two of the multiple hole channels and the connecting base are different. According to the invention, through the arrangement of the plurality of pore channels which do not interfere with each other, the normal realization of the functions of the plurality of temperature measuring elements is ensured, the structure is simple, the disassembly and replacement of a single component are facilitated, the detection of temperature measuring points at different positions is realized, and the effects of higher detection precision and higher thermal response speed are achieved.

The invention relates to a spatial light modulation unit which comprises a first electrode, a second electrode and a super-aligned carbon nanotube-paraffin composite structure, the first electrode and the second electrode are arranged in an insulated and spaced mode, and the super-aligned carbon nanotube-paraffin composite structure is electrically connected with the first electrode and the second electrode; the super-aligned carbon nanotube-paraffin composite structure comprises a super-aligned carbon nanotube structure and a paraffin layer, and the paraffin layer covers the super-aligned carbon nanotube structure and is soaked in the super-aligned carbon nanotube structure. The invention further relates to a spatial light modulation device comprising the spatial light modulation unit.

The utility model discloses a fixing roller structure, including fixing roller and mounting seat, its characterized in that, the mounting seat designs and has the axle hole with fixing roller and the gasket and carries out the movable assembly through bearing, fixing roller is the metal roller that has the fixing film function layer solidified to the outer surface, fixing film function layer and metal roller still between the setting have the base coat, the base coat is the metal ceramic material of aluminium oxide or nickel chromium alloy and forms through plasma spraying process, and fixing film function layer is formed on the base coat. The utility model discloses through fixing film and fixing roller and make integral type to avoid the problem, such as deviation, easy wrinkle, rupture and paper jam, etc. that the film type fixing film of the previous set appears, and it can also realize the fast heat response, because the fixing film that sprays and forms is close to the fixing roller made of metal, in addition, because the base of hard coating, fixing film function layer can resist physical damage, that is, resistant to paper edge scraping, not easy to break.

The present invention belongs to the technical field of temperature measurement equipment, and specifically relates to a platinum resistance temperature sensor system and a detection device thereof, the platinum resistance temperature sensor system, including a PT100 temperature sensing element, an analog-to-digital converter MCP335X ADC, a microprocessor and a data processing neural network, the output end of the differential amplifier is connected to a hardware anti-aliasing filter; the platinum resistance temperature sensor detection device, including a detection part, a machine handle part and a data line, the inner wall of the quartz shell and the outer side of the inner insulating rod body are fitted with a copper inner shell, the inner side of the spiral thermal conductive glue flow channel is spirally wound with a platinum resistance wire, the interior of the spiral thermal conductive glue flow channel is filled with thermal conductive glue, and the interior of the quartz shell near one end of the machine handle is provided with a cooling member. The present invention can reduce electromagnetic interference, monitor power supply and signal anomalies, optimize data processing, and can improve thermal response speed, reduce the influence of thermal airflow on temperature measurement, and can also reduce damage caused by vibration impact.

The application discloses a temperature control jig, which comprises a top plate, an intermediate layer and a bottom plate arranged in layers, wherein the top plate and the bottom plate are flat plate structures, a frame is arranged along the edge of the top plate, one side surface of the frame protrudes from the surface of the top plate, the top plate and the frame form a containing space for containing a display panel to be tested, a plurality of heat conduction columns are arranged on the side surface of the bottom plate away from the intermediate layer, and the intermediate layer is provided with a plurality of arrayed through holes, so that the cross section of the intermediate layer is a grid structure. The grid design of the intermediate layer of the temperature control jig greatly reduces the overall mass and heat capacity of the jig, so that heat can be more quickly conducted to the top plate through the bottom plate heat conduction columns, and the temperature rising and falling waiting time is shortened. Moreover, when the grid structure is heated and expanded, the through holes provide internal deformation space, effectively avoiding macro warping of the jig as a whole, and ensuring flat and close fitting of the panel and the jig during the test.

The utility model belongs to temperature control device technical field belongs to a peltier temperature control module, including substrate, square hole slot piece, peltier unit, copper base heat conduction sheet, temperature sensor, heat insulating layer and radiating component, square hole slot piece is embedded to one side frame of substrate, peltier unit and copper base heat conduction sheet are closely bonded through heat conduction silicone grease layer, heat insulating layer is embedded to square hole slot piece middle part, peltier unit is embedded in heat insulating layer center recess, temperature sensor and copper base heat conduction sheet pressure -sintered connection, temperature sensor and peltier unit electric connection, radiating component is connected in the other side of substrate and is contacted with peltier unit, is used for radiating cooling. The utility model can solve the low heat conduction efficiency, temperature response slow, control precision is insufficient and so on in prior art.

This utility model relates to the field of die casting technology, and provides a temperature control structure for die casting molds and a die casting mold. The die casting mold has a fixed mold frame, a moving mold frame, and a product cavity. The product cavity is located between the fixed mold frame and the moving mold frame. The temperature control structure includes: a heat insulation plate, which is placed between the fixed mold frame and the die casting machine to block the heat transfer from the die casting mold to the die casting machine; a core, one end of which extends into the product cavity to form a hole-like structure on the casting; a water channel is provided inside the core, and at least part of the inner wall of the water channel is provided with concave and convex structures distributed around the core axis. The cooling medium flows through the water channel to cool the core; the concave and convex structures form local reinforcing ribs or support points on the inner wall of the water channel, which improves the structural rigidity and deformation resistance of the core under high temperature and high pressure loads, making it possible to appropriately reduce the core wall thickness while ensuring the overall strength; the wall thickness reduction can effectively shorten the heat conduction path and improve the thermal response speed of the mold.

The application discloses a phase transition heat response gel based on an ion liquid / water binary solvent and a preparation method and application thereof, and the phase transition heat response gel system comprises N-isopropyl acrylamide (NIPAm) monomers, an initiator, an accelerator, an ion liquid and water. NIPAm is used as a heat response unit, and the ion liquid is introduced to replace a crosslinking agent commonly used in polymerization of a hydrogel, multiple hydrogen bonds and ion interaction formed between the ion liquid and a poly-N-isopropyl acrylamide (PNIPAm) chain endow the system with phase transition characteristics. The phase transition heat-induced color change intelligent window prepared by the application has the characteristics of high light transmittance, fast response, adjustable response temperature and good stability, and the phase transition heat-induced color change intelligent window overcomes the defects that a traditional heat-induced color change hydrogel is seriously shrunk in volume and the heat-induced color change performance is reduced after long-term heat-induced color change cycles, and provides certain technical support for application of the heat-induced color change intelligent window.

The application relates to a composite liquid carrier with a built-in volatile channel and a heating assembly, and belongs to the technical field of electronic cigarettes or aromatherapy equipment. The assembly comprises a liquid carrier integrally formed with the heating assembly, and a sealing coating covering the surface of the carrier and having a thermally induced phase change characteristic. At normal temperature, the sealing coating is in a solidified state, closes the volatile channel in the interior of the carrier, and inhibits the self-volatilization of the liquid; when the heating assembly is powered on to work, the coating is melted or softened by heat, automatically opens the volatile channel, and makes the liquid smoothly volatilize; after the heating is stopped, the coating is solidified again, and the channel is closed again. Through the synergistic effect of the integrally formed structure and the reversible thermally induced phase change coating, the on-demand and dynamic control of liquid volatilization is realized, the problem of serious static volatilization in the non-working state in the prior art is effectively solved, the invalid loss is significantly reduced, the service life of the product is prolonged, and the thermal response efficiency and the energy utilization rate are improved.

A clamping type sensor support comprises a sensor clamping part and a coil clamping part, the sensor clamping part and the coil clamping part are each of a limiting wrapping ring structure, the limiting wrapping ring structures are matched with a corresponding coil and a corresponding sensor and are attached to the coil and the sensor for limiting, and the coil clamping part and the coil are clamped and fixed through a clamping assembly. The clamping type sensor support provided by the utility model can be effectively prevented from falling off.

The invention provides a preparation method of a temperature and pressure integrated sensor, and the method comprises the steps: providing a temperature sensing module which comprises a temperature sensing probe, and the temperature sensing probe comprises a first pin and a second pin which are sufficient in length; performing film coating treatment on the first pin and the second pin; the first pin and the second pin are packaged to form an L-shaped back-to-back structure, and each of the first pin and the second pin comprises a first part, a second part and a bending part connected with the first part and the second part; a base is provided, the base comprises a first protruding column, a second protruding column and a plurality of PIN penetrating holes, the first protruding column, the second protruding column and the PIN penetrating holes penetrate through the base, and the first protruding column and the second protruding column are electrically connected with the second portion of the first pin and the second portion of the second pin respectively; and providing a pressure sensing module which is formed by silk-screen and sintering on the base and is electrically connected with the plurality of PIN through holes. And the function failure of the temperature and pressure integrated sensor caused by the failure of additional welding spots can be fundamentally avoided.

The invention discloses an ultrathin chip packaging device and method, and relates to the technical field of chip packaging device.The ultrathin chip packaging device comprises a workbench, a packaging drive adjusting assembly is installed at the bottom end of the interior of the workbench, and temperature fine adjustment of a fine part of an ultrathin chip material is achieved under cooperation of a packaging temperature control assembly; the temperature uniformity in the packaging process is effectively improved, the thermal reaction speed is increased, the influence of thermal stress on the ultra-thin chip material is reduced, the heat conduction abutting-in piece and the guide connection groove are arranged in an inserted connection and contact mode, it is ensured that heat is rapidly and evenly transmitted to the surface of the ultra-thin chip material, the heat conduction efficiency is optimized, or when packaging heat is gathered, the heat conduction efficiency is improved, and the heat conduction efficiency is improved. The temperature is led out through the heat conduction abutting-in piece, the phenomenon that the ultrathin chip material is damaged or has internal defects due to overheating of the ultrathin chip material is avoided, the overall performance is improved, the service life is prolonged, precise control and fine adjustment of local temperature in the packaging process are achieved, and damage of thermal stress to the ultrathin chip material is reduced.

The application discloses a PCR fast-response micro NTC temperature sensor with low-thermal-conductivity wires, which is characterized by comprising an NTC thermistor chip, two wires connected to the electrodes on the two sides of the NTC thermistor chip, an insulating layer covering the outer wall of the wires, and a packaging protection structure; the metal core wire of the wire is a low-thermal-conductivity alloy wire, and the thermal conductivity of the low-thermal-conductivity alloy wire is 5 W / m K to 50 W / m K. The traditional copper and nickel core wire is replaced by any low-thermal-conductivity alloy wire, such as phosphorus bronze, beryllium copper, brass, white copper, zinc white copper, constantan, copper-silver alloy, copper-iron alloy and copper-gold alloy, with a thermal conductivity of 5 W / m K to 50 W / m K. The wire thermal transfer rate is reduced, the thermal resistance between the NTC chip and the external low-temperature environment is increased, the interference of the wire on the temperature field is weakened, the wire heat loss is reduced, the sensor thermal time constant is shortened, and the thermal response speed is improved.

The invention provides a preparation method of an aramid fiber-based ultrathin electrothermal film and the obtained electrothermal film. The preparation method comprises the following steps: S1, adding aramid fibers into a mixed solution of potassium hydroxide and dimethyl sulfoxide, adding isopropanol, unbundling to obtain aramid nanofibers, and carrying out reinforced dispersion to obtain an aramid nanofiber suspension; s2, adding pyrrole into the aramid nanofiber suspension, magnetically stirring, adding a ferric trichloride aqueous solution, and performing in-situ polymerization to obtain an aramid nanofiber coated polypyrrole suspension; and S3, adding the aramid nanofiber suspension into the aramid nanofiber coated polypyrrole suspension, forming a film, soaking the film in a polyvinylidene fluoride organic solvent solution, and polymerizing to obtain the electrothermal film. The contact resistance is low, the number of conductive paths is large, and the conductivity is good, durable and stable; the heating uniformity is good, the thermal response speed is high, and the electro-thermal conversion efficiency is high; the material consumption is small, the weight is light, the thickness is small, the cost is low, the flexibility is good, and the method is easy to process and widely applied to large-scale commercialization.

The present application provides a micro heater, comprising an electrode and a diamond substrate; the diamond substrate comprises a substrate region and a resistance region; the resistance region is in a continuous linear shape; the electrode contacts both ends of the resistance region to form a loop. It has a temperature sensing function while heating. The micro heater is made on a diamond substrate using a laser-induced graphitization method. The micro heater described in the present application is based on all-carbon materials and does not contain metal. The diamond substrate used can provide fast thermal response and heat conduction capabilities. This micro heater also has a temperature measurement function, and there is no need to configure a temperature sensor separately.

The invention provides an electric heating composite film for deicing and lightning protection of a wind power blade and the wind power blade. The electric heating composite film for deicing and lightning protection of the wind power blade comprises an electric heating functional layer, an electrode on one side of the electric heating functional layer, a high-insulativity substrate on the other side of the electric heating functional layer, and an array type metal flow deflector on one side of the high-insulativity substrate. The lightning arrester is arranged on the outer surface of the wind power blade, the grounding lead is electrically connected with one end of the lightning arrester, the composite film used for deicing and lightning protection of the wind power blade is arranged at the front end of the wind power blade, and the electrode lead is electrically connected with one end of the composite film used for deicing and lightning protection of the wind power blade. According to the technical scheme, the electric heating deicing and lightning protection functions can be achieved at the same time.

The present invention discloses an optical fiber F-P cavity tunable filter. The piezoelectric ceramic device in the tunable filter of the present invention is a hollow tubular structure. The input optical fiber ferrule seat and the output optical fiber ferrule seat are respectively fixed at the two ends of the piezoelectric ceramic device. The piezoelectric ceramic device is arranged in a hollow shell, and the horizontal axis of the hollow shell is parallel to the axis of the tubular piezoelectric ceramic. A spring is arranged between the outer end of the optical fiber ferrule seat and the adjacent end in the hollow shell. A temperature sensing element is arranged in the hollow shell. A cooling element is arranged at the bottom of the outer part of the hollow shell. A heat sink is arranged at the bottom of the cooling element. A heat preservation material is arranged outside the hollow shell. The advantages of the present invention are that it can overcome the influence of the piezoelectric ceramic length change on its performance in the prior art; it can better reduce the difficulty of preparation and the manufacturing cost; it has the advantages of high control accuracy, fast thermal response and low power consumption, and makes the tunable range larger, and can reduce the voltage amplitude of driving the piezoelectric ceramic.

The utility model provides a kind of ceramic heater.The ceramic heater includes base and heating main body.Heating main body is arranged below base, with a symmetrical ceramic sandwich structure.Symmetrical ceramic sandwich structure includes first ceramic layer, electrode film layer and second ceramic layer sequentially stacked along height. Among them, electrode film layer is embedded between first ceramic layer and second ceramic layer, and second ceramic layer is laminated with first ceramic layer to form an integrated structure.Compared with prior art, the utility model realizes complete isolation with external environment by embedding electrode film layer completely and sealing between first ceramic layer and second ceramic layer, prevents electrode oxidation, solves the problems such as traditional surface printing electrode being easily mechanically scratched and damaged, being corroded by etching gas in process environment, etc.