35results about How to "Fast thermal response time" patented technology

The utility model belongs to a microwave power measurement system, specifically discloses a megawatt grade impulse microwave power measurement system based on calorimetric method, wherein an outlet temperature pickup is arranged on the stream outlet of a water pipe and an electric heater is arranged in the water pipe; the electric heater is connected with a rated power electricity supply; a microwave detecting device is arranged on the inlet of a microwave power absorbing device; the water runs through the inwall water pipe of the power absorbing device and an inlet temperature pickup is arranged on the stream inlet of the water pipe; an NTC thermal resistance R3 of the inlet temperature pickup is connected with a equilibrium resistance R1, while an NTC thermal resistance R4 of the outlet temperature pickup is connected with a equilibrium resistance R2; the NTC thermal resistance R3, the NTC thermal resistance R4, the equilibrium resistance R1 and the equilibrium resistance R2 form a Winston bridge and the Winston bridge is connected with a differential amplifying circuit. The utility model can measure the multiplex pulse high-power microwave power in millimetric wave band and the measuring range can be one kilowatt up to two or three megawatt.

The invention belongs to the field of material engineering and discloses a liquid crystal epoxy resin with a shape memory effect and a preparation method and application thereof. The preparation method of the liquid crystal epoxy resin with the shape memory effect comprises the following steps: heating to melt 100 parts of epoxy resin, adding 1.22-42.59 parts of unitary aliphatic amine, mixing uniformly, finally adding 10.57-26.20 parts of curing agent, and melting uniformly; pouring the obtained mixture into a preheating mould, heating to cure, and cooling to 20-30 DEG C to obtain the liquidcrystal epoxy shape memory material. The thermal response temperature of the liquid crystal epoxy resin with the shape memory effect can be adjusted conveniently, and the liquid crystal epoxy resin is short in thermal response time and high in shape recovery speed and still has the good shape memory effect after being subjected to repeated and circulatory shape memory.

The invention relates to the technical field of high polymer materials, and particularly relates to an epoxy resin with the shape memory property and a preparation method thereof. The epoxy resin with the shape memory property comprises the following raw materials in parts by weight: 100 parts of epoxy resin, 20.6-35.5 parts of sebacic monobasic amine, 14.4-20.3 parts of curing agent and 0.1-2.2 parts of curing catalyst, wherein the epoxy resin is bisphenols A epoxy resin and aliphatic epoxy resin blended resin. The influence temperature can be conveniently adjusted by changing the content and the alkyl group length of the sebacic monobasic amine or the content of the epoxy resin in the formula; the epoxy resin with the shape memory property is short in heat response time and fast in shape recovery rate and has a good shape memory effect after the shape memory repeatedly circulates; the forming process of the epoxy resin with the shape memory property is mature and low in cost; the epoxy resin with the shape memory property has relatively good mechanical property and thermal property, good chemical resistance and the characteristics of super toughness, impact resistance, wear resistance, low friction coefficient and the like and is difficult to deform, melt and burn at a high temperature environment.

The invention relates to a thimble assembly of an in-core instrument for a nuclear power station. The thimble assembly comprises armored thermocouples, a header and neutron detectors, wherein at least one armored thermocouple and a plurality of neutron detectors are soldered and fixed together via the header; each neutron detector is a self-powered neutron detector composed of a transmitter, a collecting body, an insulator and a cable; the longest neutron detector of the plurality of neutron detectors has a length identical to the height of the whole reactor core; and the lengths of the rest neutron detectors gradually decrease at an equal interval on the base of the length of the longest neutron detector, or the neutron detectors are of a same length and axially distributed at an equal interval. The thimble assembly is simple and firm in structure and small in size and can adapt to complex environments in reactors. The thimble assembly is applicable to measurement of the outlet temperature of a reactor core in a nuclear power station and measurement of the neutron fluence rate of the core and has long service life.

The invention relates to a platinum resistance temperature sensor with high intensity and fast response. A temperature-sensing element is installed at a small diameter part of a reducing temperature-sensing drivepipe, and insulating materials are filled up between the back end of the temperature-sensing element and the temperature-sensing drivepipe. An inner protective tube is provided with a sheathed signal cable leading wire, and the sheath signal cable leading wire is connected with the temperature-sensing element. The temperature-sensing drivepipe and the inner protective tube are welded together and form a thermometer core, and a sealed tube is welded with the thermometer. A bottom hole is formed in the bottom of a small diameter part of a conical outer protective tube, three groups of diversion holes dividing the circumference equally are formed in the small diameter part of the conical outer protective tube in a radical direction, each group of diversion holes are provided with a plurality of diversion holes along an axial direction, and the rear end of the outer protective tube is in threaded connection with a base of a media fluid channel. The inner cavity of the inner protective tube fits with the inner cavity of the outer protective tube, the inner protective tube and the outer protective tube are connected and sealed with a Swagelok, and the Swagelok body is welded with the outer protective tube. The platinum resistance temperature sensor fits in with the special requirements of high temperature, high pressure and high speed media fluid, and possesses fast thermal response.

A heat dissipating cavity includes a cavity made of high thermal conductive material having a plurality of heat dissipating fins on the outside thereof, and temperature equalizing elements including heat pipes and heat expansion plates, which can be used individually or collectively. The heat generated by the heating electronic elements inside the cavity is first effectively conducted to the temperature equalizing elements, wherefrom effectively and evenly conducted to the entire cavity, and finally released out of the system by the plurality of heat dissipating fins. The use of temperature equalizing elements increases the homogeneity of the cavity's overall temperature and greatly improves the efficiency of heat dissipation.

The invention provides a method for preparing carbon nanotube and PCM-combined phase change temperature control component, which aims to provide a method for preparing a phase change temperature control component with high phase change latent heat and better heat conduction effect. The present invention is implemented as follows: casting pyrolytic graphite in the heat sink bottom and the verticalhot wall surface of a metal conductor packaging container; combining carbon nanotubes and phase change materials by ultrasonic vibration to form a carbon nanotube and phase change composite material,and charging the liquid carbon nanotube and phase change composite material in a heat conductive reinforcing skeleton by a vacuum co-fusion method; welding the heat conductive reinforcing skeleton ina phase change cavity to form a multilayer phase change latent heat self-control adjustment level that the pyrolytic graphite wrapping, in a U-shape, heat conductive reinforcing skeleton, and forminga thermal insulation buffer layer from the phase change cavity; and finally, welding a cover plate on the stepped opening of the metal conductor packaging container by electron beam welding, enclosingto form a closed phase change temperature control component, and processing to obtain the boundary dimension according to requirements.

The invention discloses a nitrogen dioxide gas sensor containing petal-like SnSe2. The nitrogen dioxide gas sensor comprises a gas sensitive material and a heating substrate, wherein the heating substrate is coated with the gas sensitive material, the coating thickness ranges from 1-100 micrometers, and the gas sensitive material is prepared from a petal-like SnSe2 nanomaterial. A preparation process includes the following steps: step 1, mixing 1.6-2.4 mL of C2H8N2 with 30.4-45.6 mL of (CH2OH)2, adding 361-541.6 mg of stannous chloride dihydrate and 126.3-189.5 mg of selenium powder, performing magnetic stirring for 20-30 minutes, pouring the mixture into a reaction kettle for 3-12 hours of reaction at the temperature of 165-180 DEG C, separating an obtained black product by a centrifugalmachine, repeatedly performing washing until the pH of waste liquid is 6.5-7.5, and drying the waste liquid at the temperature of 80 DEG C for 6-12 hours to obtain the petal-like SnSe2; step 2, preparing SnSe2 dispersion liquid; step 3, coating the dispersion liquid onto the heating substrate, and drying the heating substrate in a drying box at the temperature of 80 DEG C to obtain the nitrogen dioxide gas sensor. The nitrogen dioxide gas sensor provided by the invention has the advantages of simple process step, low cost and sensitive response to nitrogen dioxide.

The invention provides a method for integrated preparing of a foam metal phase change temperature control assembly and aims at providing a technology method for solving the problem that in a phase change temperature control assembly, a gap exists between foam metal and a base body material, and the heat response rate is influenced. The method is achieved through the following technical scheme that according to the boundary dimension of a packaging container, a packaging container clamp is prepared; a cavity used for welding the foam metal is machined in the packaging container in advance, a layer of welding piece is laid on the inner side welding face of the cavity of the packaging container, and the contact interface of the foam metal is subjected to tin lining; the foam metal is compressed to the cavity size; the packaging container, the foam metal and the clamp are assembled into a whole and heated, and after cooling, a formed phase change temperature control assembly blank is taken out of the clamp of the packaging container; in the constant-temperature environment, a liquid phase change material is poured into the phase change temperature control assembly from a pouring port in the bottom of the packaging container; and finally, the pouring port is sealed, and machining of the appearance of the temperature control assembly is finished.

A heat dissipating cavity of looped heat pipe structure includes a cavity made of high thermal conductive material having a plurality of heat dissipating fins on the outside thereof, and looped heat pipes. The heat generated by the heating electronic elements inside the cavity is first effectively conducted to the looped heat pipes, wherefrom to the entire cavity, and finally released out of the system by the plurality of heat dissipating fins. The use of looped heat pipes increases the homogeneity of the cavity's overall temperature and greatly improves the efficiency of heat dissipation.

The invention belongs to the technical field of gas sensors, and provides a gold-modified flower-like SnS2 nitrogen dioxide gas sensor and a preparation method thereof. The nitrogen dioxide gas sensorcomprises a gas sensitive material and a heating electrode. The gas sensitive material is uniformly coated on the surface of the heating electrode. The gas sensitive material is flower-like SnS2 withuniformly distributed gold, and has a large surface area-volume ratio structure, and Au nanoparticles can be used as an active catalyst with specific catalytic characteristics, and can enhance the diffusion and transfer rate of adsorbed substances from an active site to an inactive site. The gold-modified flower-like structure nano material is prepared by adopting a hydrothermal method and a water bath method, the raw materials are convenient to obtain, the price is low, and the preparation process is simple.

The invention discloses a triplex backup temperature measurement sensor, and aims to provide a triplex redundancy backup total temperature sensor capable of improving the reliability and reducing thevolume and weight of the sensor. The triplex backup temperature measurement sensor is implemented according to the technical scheme that an inner tube of a double-layer sealed metal exploring tube ofa coaxially connected temperature sensing sensor penetrates through a metal throat of the temperature sensing sensor, and then is fixedly connected to a tail cover at the rear end and packaged in a mutually independent air flow channel of a metal outer tube; and three platinum wires wound on an electric conductor winding cylinder lead out six platinum wire taps which are connected to bent joint connecting pieces and leading-out wires, an air flow passes through a tube cylinder annular hole of the metal outer tube and the electric conductor winding cylinder and flows to the inner tube wall of the double-layer sealed metal exploring tube via a probe measuring end, the air flow is transformed into a sound velocity air flow by means of a Laval principle of the metal throat, the kinetic energyof the air flow is converted into a corresponding triplex backup resistance signal, and the triplex backup resistance signal is provided for an engine control system and converted into a triplex redundancy electric signal for three channels.

The invention discloses a ZnSe / ZnO based nitrogen dioxide gas sensor and a preparation process thereof. The sensor comprises a gas sensitive material and a heating electrode, wherein the gas sensitivematerial is coated on the surface of the heating electrode, the coating thickness is 50-80 microns, and the gas sensitive material is a heterojunction composite nano-material formed by zinc selenideand zinc oxide. The preparation process comprises the steps of first, placing zinc selenide powder in an ark, putting the ark in a tubular furnace, introducing a dry gas mixture of 20% of oxygen and 80% of nitrogen for heating at the same time, and reacting at a temperature of 400 DEG C-600 DEG C for 0.5h-4h, then naturally cooling to the room temperature to obtain a ZnSe / ZnO heterojunction; second, putting the ZnSe / ZnO heterojunction powder into a mortar, adding deionized water, and grinding until the solution is in uniform suspension; taking the suspension, coating the suspension on the surface of the heating electrode, placing the sensor in a drying oven to dry at a temperature of 80 DEG C so as to obtain a nitrogen dioxide gas sensor. The nitrogen dioxide gas sensor has the advantagesof simple processing steps, low cost and sensitive response to nitrogen dioxide.

The invention discloses a wear-resistance quick temperature measuring platinum resistance thermometer, which comprises a wear-resistant protecting tube and a platinum resistance thermometer arranged in the protecting tube, and is characterized in that: in the protecting tube, a quick heat conducting body connected with the platinum resistance thermometer is arranged at the temperature sensing end; the platinum resistance thermometer is tightly matched with the inner wall of the protecting tube; and a heat conducting material is filled in small gaps between the platinum resistance thermometer and the inner wall of the protecting tube. The wear-resistance quick temperature measuring platinum resistance thermometer has the advantages that: by selecting the material of the protecting tube and the platinum resistance thermometer, the wear resistance and corrosion resistance are improved by more than three times compared with those of the conventional wear-resistant protecting tube; and the platinum resistance thermometer is tightly matched with the protecting tube, the heat conducting material is filled in the gaps, and the quick heat conducting body is arranged at the temperature sensing end (heat end) of the protecting tube, so that the heat conductivity is improved by 8 times. The wear-resistance quick temperature measuring platinum resistance thermometer has a compact structure, has the thermal response time of less than 5 seconds, meets the performance requirements for corrosion resistance and wear resistance in the tyre rubber vulcanizing process, improves the effect of quickly and accurately measuring temperature of a temperature sensor, is convenient and practical to use, and has obvious effect.

The invention discloses a sheathed thermocouple for an explosion-proof transformer, and relates to a temperature sensing device. The sheathed thermocouple for the explosion-proof transformer comprises an outgoing line hole locking nut, a terminal block, a wiring porcelain plate, a protecting tube, an insulating porcelain tube, a first thermocouple wire and a second thermocouple wire, the insulating porcelain tube is arranged in the protecting tube, the second thermocouple wire and the first thermocouple wire are arranged in the middle of the insulating porcelain tube and at one end of the insulating porcelain tube respectively, the other end of the insulating porcelain tube is connected with the terminal block through the wiring porcelain plate, and the outgoing line hole locking nut is arranged on the outer side of the terminal block. The sheathed thermocouple for the explosion-proof transformer has the advantages of being small in diameter, bendable, resistant to high pressure and vibration, short in thermal response time, firm, durable, high in reliability and the like, and is capable of being used for measuring temperatures in two different environments at the same time, high in response speed, stable in performance and long in service life.

The utility model belongs to a microwave power measurement system, specifically discloses a megawatt grade impulse microwave power measurement system based on calorimetric method, wherein an outlet temperature pickup is arranged on the stream outlet of a water pipe and an electric heater is arranged in the water pipe; the electric heater is connected with a rated power electricity supply; a microwave detecting device is arranged on the inlet of a microwave power absorbing device; the water runs through the inwall water pipe of the power absorbing device and an inlet temperature pickup is arranged on the stream inlet of the water pipe; an NTC thermal resistance R3 of the inlet temperature pickup is connected with a equilibrium resistance R1, while an NTC thermal resistance R4 of the outlet temperature pickup is connected with a equilibrium resistance R2; the NTC thermal resistance R3, the NTC thermal resistance R4, the equilibrium resistance R1 and the equilibrium resistance R2 form a Winston bridge and the Winston bridge is connected with a differential amplifying circuit. The utility model can measure the multiplex pulse high-power microwave power in millimetric wave band and the measuring range can be one kilowatt up to two or three megawatt.

The invention discloses a water-cooling temperature sensor and a mounting method thereof. The water-cooling temperature sensor comprises a NTC module, the NTC module extends into a water pipe connector and is clamped. Through the water-cooling temperature sensor provided by the invention, the NTC module is modularized, and the mounting is convenient.

The invention discloses an integrated variable-diameter pin type quick response platinum thermal resistor, which comprises a platinum thermal resistor element and a protection tube and is characterized in that a platinum thermal resistor protection tube is of integrated variable-diameter structure; a high-precision micro platinum thermal resistor is arranged in the protection tube; the outer diameter of the platinum thermal resistor and the variable-diameter protection tube are in close fit; and heat conduction material is poured into the tiny slits of the fit. The invention has the beneficial effects that: due to the integrated variable-diameter pin structure of the protection tube, the diameter of the protection tube is reduced to 1.7 mm; a high-precision micro platinum thermal resistor element with size 1 / 2 smaller than that of a common platinum thermal resistor is matched so that the platinum thermal resistor and the variable-diameter protection tube are in close fit; and the heat conduction material is poured into the tiny slits of the fit. The invention has the characteristics of simple structure, convenience and practicability, obvious effect and quick temperature measurement; the thermal response time reaches a millisecond level, the temperature measurement accuracy of a temperature sensor is obviously improved, and the aim of saving energy and reducing consumption is achieved.

The invention relates to a new epoxy resin shape memory macromolecule material and a relative preparation method, wherein the material contains liquid crystal epoxy resin monomer and curing agent at stoichiometry, which may further contains curing accelerator of 0-2% consumption of the total accounts of the liquid crystal epoxy monomer and curing agent. Compared with prior shape memory material, the inventive material has the advantages that (1), the thermal responsible temperature can be adjusted by adjusting the side chain and substituted chain of the liquid crystal epoxy monomer or by selecting curing agent, (2), the heat response time is short and the shape recover is rapid, (3), the product can realize saturated shape memory effect, (4) the product has simple preparation and clear structure.

The invention relates to embedded contact type cigarette temperature measuring equipment. The embedded contact type cigarette temperature measuring equipment comprises a first temperature sensor (11),a second temperature sensor (12), a third temperature sensor (13), a fourth temperature sensor (14), an analog signal amplification module (2), an analog / digital conversion module (3), a data processing and storage module (4), a filter clamping unit (5), a smoke filtering unit (6) and a suction unit (7). The embedded contact type cigarette temperature measuring equipment has the advantages of precise temperature measurement, high sensitivity and the like, is not limited to detection of the temperature of mainstream smoke at the rear end of the filter, and detects the temperature of mainstreamsmoke in the filter, the temperature of a tobacco shred section and the surface temperature of cigarette paper and molding paper.

The invention relates to a platinum resistance temperature sensor with high intensity and fast response. A temperature-sensing element is installed at a small diameter part of a reducing temperature-sensing drivepipe, and insulating materials are filled up between the back end of the temperature-sensing element and the temperature-sensing drivepipe. An inner protective tube is provided with a sheathed signal cable leading wire, and the sheath signal cable leading wire is connected with the temperature-sensing element. The temperature-sensing drivepipe and the inner protective tube are welded together and form a thermometer core, and a sealed tube is welded with the thermometer. A bottom hole is formed in the bottom of a small diameter part of a conical outer protective tube, three groups of diversion holes dividing the circumference equally are formed in the small diameter part of the conical outer protective tube in a radical direction, each group of diversion holes are provided with a plurality of diversion holes along an axial direction, and the rear end of the outer protective tube is in threaded connection with a base of a media fluid channel. The inner cavity of the inner protective tube fits with the inner cavity of the outer protective tube, the inner protective tube and the outer protective tube are connected and sealed with a Swagelok, and the Swagelok body is welded with the outer protective tube. The platinum resistance temperature sensor fits in with the special requirements of high temperature, high pressure and high speed media fluid, and possesses fast thermal response.

The invention discloses an ultra-long two-point entity armored-thermocouple of the technical field of armored thermocouples. The thermocouple includes a temperature measuring core. A surface of the temperature measuring core is fixedly connected with a four-hole magnesium oxide pipe. A surface of the four-hole magnesium oxide pipe is fixedly connected with a stainless steel protection pipe. A surface of the stainless steel protection pipe is fixedly connected with a pipeline. A surface of the pipeline is fixedly connected with a high-temperature resisting layer. A surface of the high-temperature resisting layer is fixedly connected with a rustproof layer. A pipeline A point is arranged on the surface of the pipeline. According to the thermocouple, pipe permeating links in old technology can be eliminated through cooperation use of the temperature measuring core, the four-hole magnesium oxide pipe, the stainless steel protection pipe and the pipeline, thermal response time of the pipeline A point and a pipeline B point can be effectively improved because certain space exists in a protection pipe of a pipeline A point and a pipeline B point of the traditional technology, and thermalresponse time is relatively long, length can exceed a kilometer, and production can be completed in a workshop due to no pipe permeating technology.

The invention discloses a thermocouple device for measuring tin bath temperature in a float glass furnace. The device includes an armoured thermocouple used for temperature measurement, a junction boxwhich has a junction base inside and is used for outputting the temperature measured by the armoured thermocouple, and a supporting pipe connected to the junction box. The armoured thermocouple is placed in the supporting pipe; the lower end of the supporting pipe is connected to a thermocouple protective sleeve made of graphite and a heat insulation block placed between the supporting pipe and the thermocouple protective sleeve; the thermocouple protective sleeve has a containing cavity; and the temperature measuring end of the armoured thermocouple passes through the heat insulation block after protruding from the lower end opening of the supporting pipe, and is placed in the containing cavity. The advantages of the thermocouple device are that the device is not easy to corrode, pollution of glass solutions and tin liquor cannot be caused, the structure of the device is simple, the thermal response time is short, and the accuracy of temperature measurement is high.

The invention belongs to the field of material engineering and discloses a liquid crystal epoxy resin with a shape memory effect and a preparation method and application thereof. The preparation method of the liquid crystal epoxy resin with the shape memory effect comprises the following steps: heating to melt 100 parts of epoxy resin, adding 1.22-42.59 parts of unitary aliphatic amine, mixing uniformly, finally adding 10.57-26.20 parts of curing agent, and melting uniformly; pouring the obtained mixture into a preheating mould, heating to cure, and cooling to 20-30 DEG C to obtain the liquidcrystal epoxy shape memory material. The thermal response temperature of the liquid crystal epoxy resin with the shape memory effect can be adjusted conveniently, and the liquid crystal epoxy resin is short in thermal response time and high in shape recovery speed and still has the good shape memory effect after being subjected to repeated and circulatory shape memory.

The invention provides a shape memory phenolic resin and a preparation method thereof. The shape memory phenolic resin comprises, in parts by weight, 100 parts of resole phenolic resin, 5 to 15 parts of isocyanopolyurethane prepolymer, 1 to 15 parts of Hardener. The shape memory phenolic resin provided by the present invention reduces the crosslinking density of the phenolic resin and increases the crosslinking point by introducing a polyurethane flexible segment on the benzene ring and using a longer molecular segment of the polyurethane flexible segment to modify the phenolic resin. The length of the molecular segments in between, so that the molecular structure of the shape memory phenolic resin has two molecular segment structures of hard segment and soft segment, which improves the toughness of the phenolic resin and makes the shape memory phenolic resin have the shape memory effect. be applied in more fields.

The invention relates to a stepless speed change tea leaf strip tidying machine. The stepless speed change tea leaf strip tidying machine comprises a machine frame, a tea strip tidying assembly, a heating assembly and a transmission assembly, wherein the tea strip tidying assembly comprises a U-shaped tank pot; the heating assembly comprises a silicone rubber heating piece coated to the bottom ofthe U-shaped tank pot; the transmission assembly comprises a tea strip tidying motor, a belt pulley stepless speed change regulating mechanism and a plane swinging guide-bar mechanism, wherein the teastrip tidying motor is used for driving the belt pulley stepless speed change regulating mechanism to drive the plane swinging guide-bar mechanism to move, so that the U-shaped tank pot is in reciprocating swinging along the width direction of the U-shaped tank pot, and tea leaf strip tidying is realized. According to the stepless speed change tea leaf strip tidying machine disclosed by the invention, the plane swinging guide-bar mechanism is arranged, so that vibration and noise in the tea leaf strip tidying process are reduced, and the service life of the tea strip tidying machine is prolonged; the stepless speed change regulating mechanism is arranged, so that when the rotating speed of the transmission mechanism is regulated, the output power can be guaranteed to be constant, the U-shaped tank pot can obtain a stable reciprocating frequency, and the strip tidying quality and the movement stability are improved; and the silicone rubber heating piece is arranged, so that the uniformity of the tea leaf strip tidying temperature is guaranteed, and the quality of tea leaf strip tidying is improved.

The invention provides a rotating speed, temperature and vibration signal acquisition sensor and a manufacturing method, and belongs to the technical field of sensors. The sensor comprises a shell; a circuit board which is installed in the shell through a fastener, wherein a Hall element, a thermistor and an acceleration chip are welded to the circuit board, the Hall element corresponds to the speed measuring gear in position, the thermistor corresponds to the bearing in position, and the acceleration chip corresponds to the position of the bearing. According to the invention, the corresponding detection elements for detecting the rotating speed, the temperature and the vibration signal parameters are integrated on the same circuit board, and the circuit board is installed in the shell to form a single sensor, so that the size of the whole sensor is reduced on the basis of meeting the detection of the three parameters, and the miniaturization of the sensor design is realized; therefore, reasonable wiring and installation of the sensor in the bearing box with limited space can be facilitated.

The invention discloses a high-precision distributed temperature measurement system, which comprises a temperature sensor assembly, a temperature acquisition assembly and a thermal control lower computer, wherein the temperature sensor assembly comprises a platinum resistor, a precision resistor, a signal conditioning circuit and a packaging shell body; the platinum resistor and the precision resistor are connected in series and installed in the packaging shell body; the platinum resistor and the precision resistor are temperature quantity signal input sources, and the conditioning circuit conditions a temperature measured signal into a voltage signal to be acquired by the temperature acquisition assembly; the temperature sensor assembly and the temperature acquisition assembly are arranged at temperature control objects, the number of the temperature acquisition assemblies is one, and one temperature acquisition assembly corresponds to 1-4 temperature sensor assemblies; and a multi-way switch is used for switching different temperature acquisition assemblies, the potential difference between the platinum resistor and the precision resistor is acquired, the potential difference isamplified and converted into a digital signal, the digital signal is transmitted to the thermal control lower computer, and the measured temperature is obtained through calculation by means of the thermal control lower computer. According to the high-precision distributed temperature measurement system, the temperature measurement precision and stability are effectively improved.

The invention relates to a safe protective device of electric heating container, which comprises a electric heating element formed by a electric heating ring and a heat conductive plate; a heat power device formed by a dual metallic plate and a top rod; and a electric switch formed by a movable contact point, a movable contact plate, a stable contact point and a stable contact plate. Wherein, thedual metallic plate are movably connected to one end of top rod; another end of top rod is supported to the movable contact plate; the central section of independent heat conductive device is insulated from the heat conductive plate which has at least one dual metallic plate; the independent heat conductive device has a thermal sensitive feeler heat connected to the heat conductive plate of electric heating container. The dual metallic actuator can feel the temperature via the feeler of heat conductive device; and the independent heat conductive device has tight heat contact with the heat conductive plate of heater to solve the problem of slow response speed. The invention has simple structure, fewer elements, and improved reliability and safety.

The invention discloses an iron-based amorphous alloy, a preparing method of the iron-based amorphous alloy and application of the iron-based amorphous alloy to an electrical heating material. The iron-based amorphous alloy is composed of FeaTibNicBdPeCfMg, wherein a, b, c, d, e and f are all atom percents, a is larger than or equal to 45 and smaller than or equal to 70, b is larger than or equalto 10 and smaller than or equal to 25, c is larger than or equal to 3 and smaller than or equal to 20, d is larger than or equal to 5 and smaller than or equal to 15, e is larger than or equal to 1 and smaller than or equal to 6, f is larger than or equal to 0.5 and smaller than or equal to 3, g is larger than or equal to 1 and smaller than or equal to 5, and the sum of the a, the b, the c, the d,the e, the f and the g is 100; and the component M is at least one of Zr, Y, Ta and Hf. The iron-based amorphous alloy electrical heating material has the good electric heating performance, the low temperature coefficient of resistance is achieved, and the low coefficient of linear expansion is achieved. The iron-based amorphous alloy has the high abrasive resistance, the high corrosion resistance and the good toughness, can be widely applied to various electric heating devices, and has the important industrial application values.