40 results about "Sample temperature" patented technology

The invention relates to the field of heating characteristics of samples, and particularly provides a macro sample temperature jump type in-situ thermal analysis system and a macro sample temperature jump type in-situ thermal analysis method. The system is characterized in that a driving unit is arranged on a guide rail and is suitable for doing vertical movement along the guide rail; the guide rail is perpendicular to the ground; the tubular electric heating reaction unit is connected with the driving unit, and after the tubular electric heating reaction unit is heated to a target temperature, the driving unit drives the tubular electric heating reaction unit to move to the periphery of the sample placing unit, so that a macro sample in the sample placing unit is instantly heated; the accuracy of analyzing the thermogravimetry of macroscopic samples and the precipitation characteristics of volatile matters in simulated industrial application can be improved; the balance measuring unit is connected above the sample placing unit, and the initial position of the tubular electric heating reaction unit is located at the lower end of the guide rail, so that the sample placing unit and the balance measuring unit are kept stable in the process of placing a macroscopic sample into the sample placing unit, and the weighing error during sample weighing and sample reaction is reduced.

The invention relates to the field of temperature control, particularly provides a temperature control method, equipment, a medium and a system, and aims to solve the technical problem that the temperature control range is small due to the fact that an existing chemical adsorption instrument carries out temperature adjustment in a single temperature control mode. The temperature control method comprises the following steps: acquiring a set temperature, a sample temperature and a preset temperature threshold; determining a temperature control mode according to the set temperature, the sample temperature and a preset temperature threshold; and controlling the temperature of the sample in the chemical adsorption instrument according to the temperature control mode.

The invention discloses a thermal barrier coating temperature and thickness coupling measurement method, system and device and a storage medium, and relates to the technical field of aeronautical material testing. The method comprises the following steps: calibrating a mapping relation among parameters: preparing a series of standard samples with different thicknesses, collecting phosphorescence spectrums of the samples with the standard thicknesses at different temperatures, and calibrating the mapping relation among the parameters; the phosphorescence spectrum of the to-be-detected sample is collected, the phosphorescence intensity ratio of 457 nm to 483 nm is calculated, and the phosphorescence intensity of 586 nm is read; calculating the temperature of the to-be-measured sample: calculating the temperature of the to-be-measured sample according to the measured phosphorescence intensity ratio and the intensity ratio-temperature mapping relation; and calculating the thickness of the to-be-measured sample: determining a change curve of the phosphorescence intensity along with the thickness according to the calculated temperature of the to-be-measured sample, and calculating the thickness of the phosphorescence coating in combination with the measured phosphorescence intensity. The method and the system can realize non-contact synchronous online measurement of the temperature and the thickness of the thermal barrier coating.

The invention discloses a pretreatment method for measuring the chemical oxygen demand of landfill leachate, which comprises the following steps of: selecting the landfill leachate generated by a refuse landfill or an incineration plant, accurately measuring 100-500mL of sample, and directly transferring the sample into a clean and dry container special for a wall breaking machine; the sample is not added with any chemical reagent, dispersing agent or stabilizing agent, the original physical state and chemical composition are kept, and interference of foreign substances on subsequent COD determination is avoided; according to the method, the treatment time (less than or equal to 2 minutes, and the upper limit is not more than 5 minutes) and the rotating speed range (18000-25000rpm) are strictly controlled, so that organic matter decomposition or property change caused by too high sample temperature is avoided; and the homogenized sample is subjected to room temperature standing (20-25 DEG C) and capping sealing, so that the loss of volatile organic compounds and the introduction of pollutants in air are prevented, the original chemical composition of the sample is further guaranteed, and the authenticity of the subsequent COD measurement result is ensured.

This invention relates to the field of measuring device technology and discloses an acrylate polymerization viscosity measuring device, including a rotor with a lower chamber and an upper chamber inside, the air pressure values ​​inside the lower and upper chambers being adjustable, and an elastic component disposed at the top of the rotor, the elastic component having an adjustable preload. This invention, by incorporating the elastic component, can buffer the instantaneous torque when the upper shell suddenly drives the rotor to rotate, allowing the rotor to start slowly and preventing the formation of a vacuum region inside the sample during rotor rotation, which would cause gas to precipitate and form bubbles. This ensures the accuracy of the data in the test results. Furthermore, the preload of the arc spring in the elastic component can be adjusted in real time by the increase in sample temperature, allowing the elastic component to be adjusted according to the sample temperature and adaptable to various operating environments.

The application discloses a kind of detection methods of the temperature resistance of filler for organic silicon sealant, belong to material detection technical field;Including determining the initial fineness value of filler sample, record as L0;Filler sample is baked at 150~180 ℃ condition 2~4 hours;Determine the fineness value of filler sample after baking, record as L1;If L1-L0≥5 μm, determine this filler sample after high temperature will have the phenomenon of return coarse, poor temperature resistance;If L1-L0<5 μm, then determine this filler sample temperature resistance is good;The method described in the application is simple, fast detection, low equipment requirement and accurate and reliable result;Solve the existing problems, such as operation complex, detection efficiency low and poor correlation with actual application of temperature resistance detection method of filler for organic silicon sealant.

The utility model relates to the field of food detection, and provides a food production detection device which comprises an equipment main body, a heating structure, a detection box, a second motor, a mounting disc, an electric push rod, a temperature detector and a heating rod. Wherein two groups of electric push rods are started to drive a temperature detector to enter the container so as to detect the temperature of the sample, the electric push rods drive the temperature detector to reset after detection is completed, and if the detected temperature is lower than a threshold range set in advance, the temperature detector controls a second motor to start; when a sample is detected, the electric push rods drive the mounting disc and the electric push rods to rotate, the heating rods are positioned right above the container, and the other two electric push rods drive the heating rods to enter the container to heat the sample, so that the temperature of the sample can be ensured, and the detection result is prevented from being influenced by too low temperature of the sample.

The application discloses a kind of high-speed centrifuge in-situ heating under high temperature of high speed effect temperature calibration test method.Determine the parameters of centrifuge and test sample, install a temperature calibration sample and multiple test samples in sample chuck and insert thermocouple;In the case of not starting centrifuge, keep still, vacuum control temperature system controls inductive heating system, circulating water cooling system work to test sample and temperature calibration sample to apply temperature load, after temperature reaches predetermined temperature and keeps temperature;Analysis and processing obtain the parameters of upper and lower induction coils when formal test measurement;Remove temperature calibration sample, replace test sample, start the main shaft rotation of centrifuge again and reach speed, control according to the parameters obtained in the fifth step until test sample is pulled off and broken.The application solves the deficiency that current high-speed radiation heating can only check ambient temperature but cannot accurately check sample temperature under high speed, and can directly check sample temperature under high speed, so that the temperature of test component is more accurate.

The application discloses a lunar soil water ice drilling process sample temperature rise simulation prediction method and system, belongs to the moon water ice detection and temperature field simulation technical field, wherein the method comprises the following steps: matching lunar soil characteristic parameters according to the polar lunar soil properties, and establishing a lunar soil water ice particle system according to the lunar soil characteristic parameters; acquiring the inner diameter, the outer diameter and the wall thickness of a drill rod, and the heat output and the heating power input of an instantaneous heat source, and inputting the EDEM simulation software to establish a drill theoretical temperature rise model; performing a single-tooth cutting simulation test based on the water ice particle system and the drill theoretical temperature rise model, and determining a heat source point and a heat generation energy distribution ratio; and integrating the lunar soil water ice particle system, the drill theoretical temperature rise model and the heat generation energy distribution ratio to establish a moon-land interaction discrete element temperature rise model. The method increases the simulation of heat transfer forms such as convection and thermal radiation, the established simulation model is closer to the actual situation, and then the simulation model can predict the temperature rise of the drill and the lunar soil water ice in the drilling process.

The utility model discloses a kind of biodegradable modified material heat resistance testing device, it includes base, the top of base is fixedly installed with box. The device is started by controller assembly starting device, cylinder starts operation, drives support plate to move downwards, so that mounting plate and its bottom heating lamp tube and infrared temperature sensor drop to appropriate position, according to the height adjustment heating lamp tube and the interval between biodegradable modified material of biodegradable modified material, avoid the phenomenon that heating lamp tube needs to spend more time for the smaller biodegradable modified material surface heating, reduce the influence of vibration on test, ensure that device stable operation, infrared temperature sensor real-time monitoring sample temperature, and temperature data is transmitted to controller assembly, can be real-time, accurate monitoring sample temperature, provide reliable data for test, transparent window can also intuitively observe sample state in test process, without frequently opening box, improve the convenience of test operation and control ability to test process.

The invention relates to the technical field of medical instruments, and provides a sample cracking method and a sample cracking control device for a sample treatment device, and the sample cracking method comprises the following steps: controlling an action part to execute a cracking process on a sample by target power; recording a real-time energy value of the acting part during the execution period of the cracking process, and calculating an accumulated energy value of the acting part during the execution period of the cracking process based on the real-time energy value; when the accumulated energy value reaches the target energy value, the cracking process of the acting part is stopped; wherein when the real-time energy value is recorded at each moment, the calculation energy value is obtained according to the real-time power of the acting part at the moment; temperature information of the sample at the moment is obtained, the calculated energy value is corrected according to the temperature information, and a real-time energy value is obtained. The cracking process of the cracking action part can be corrected in real time according to the sample temperature, so that the phenomenon of insufficient cracking caused by temperature rise in the prior art is avoided.

The invention discloses a dynamic evaluation method and system for a UHPC hydration heat regulation effect, particularly relates to the technical field of material thermophysical property testing, and is used for solving the problem of temperature rise curve distortion caused by heat loss compensation delay in the process of measuring UHPC violent hydration heat release by an existing adiabatic calorimetric method. The method comprises the following steps: generating a time-temperature sequence by collecting sample temperature data, obtaining a wavelet energy spectrum entropy sequence through continuous wavelet transform, analyzing a dynamic response relationship of temperature signals at different positions in a high heat release time period to obtain time delay characteristics, and comprehensively judging a temperature rise rate mutation time period according to characteristic mutation and delay characteristic change. And calculating a heat loss compensation deviation based on an actually measured temperature difference, and finally dynamically correcting a temperature sequence to generate an accurate hydration temperature rise curve. The method can effectively identify the measurement deviation caused by the response lag of the instrument, and improves the accuracy and reliability of the hydration heat evaluation result.

According to the rotating sample temperature measurement method based on the fluorescence arc length, the fluorescence service life of a material can be detected by measuring the fluorescence arc length, the function relation between the fluorescence service life and the temperature exists, temperature measurement is achieved by detecting the change of the fluorescence service life, high-precision temperature data can be provided, and in addition, the temperature measurement accuracy is improved. The high-speed rotating sample is adopted, the application scene in production and life is simulated, the feasibility is further improved, the limitation of the radiation temperature measurement technology is solved, an effective solution is provided for temperature monitoring in the high-speed rotating environment, and the high-speed rotating temperature measurement device has important significance for ensuring normal operation of components, improving safety and scientific research.

The invention discloses a sample temperature calibration device and calibration method during permanent magnet material measurement, and the method comprises the steps: designing a sample temperature calibrator, and carrying out the pre-calibration of the sample temperature calibrator; using the sample temperature calibrator to calibrate the permanent magnet measuring instrument: setting the temperature of a pole head, and placing a temperature measuring probe after the temperature of the pole head is stable; after the reading of the sample temperature calibrator is stable, recording the actual temperature of the upper and lower pole head temperature controllers, calculating the set deviation of the pole head temperature, correcting the set pole head temperature by adopting the set deviation to obtain a corrected set value, and carrying out multi-point calibration on the pole head temperature to obtain a calibration value; and optimizing the calibration value according to the monitoring compensation of the sample temperature calibrator, and outputting the optimized calibration value. The method not only can improve the precision of sample temperature calibration for permanent magnet material measurement, but also has good interpretability, and can be directly applied to a sample temperature calibration system for permanent magnet material measurement.

The application discloses a sample temperature control method, system, electronic equipment, medium and product. The method comprises the following steps: acquiring temperature data of at least one to-be-monitored sample collected by a temperature collection device, and placing the to-be-monitored sample in a closed cavity; performing temperature change analysis on the temperature data of each to-be-monitored sample to determine a sample state; determining a control instruction of a cooling device according to the sample state, and controlling the running state of the cooling device through the control instruction, so as to solve problems such as low efficiency, inability to quantitatively control and inability to quantitatively judge caused by artificial observation of whether cooling is completed; collecting the temperature data of the to-be-monitored sample and performing temperature change analysis on the temperature data, so as to realize real-time and accurate analysis on the state of the sample in the cooling process, and the accuracy and efficiency are higher than those of artificial judgment through experience; and the running state of the cooling device is controlled through the control instruction, so as to realize automatic cooling control, quantitative control and quantitative judgment.

This application discloses a centrifuge, relating to the technical field of centrifuges. The centrifuge includes: a drive assembly; a rotor connected to the drive assembly, with an internal cavity; a housing element disposed within the housing cavity; a temperature measuring module installed on the rotor; and a non-contact power supply module with an electrical signal connected to the temperature measuring module. The temperature measuring module includes an energy storage unit, a data acquisition unit, and a temperature probe. The temperature probe is installed on the rotor and is used to detect the temperature of the housing element. The energy storage unit and the temperature probe are connected by a common wire. The data acquisition unit is electrically connected to the energy storage unit and acquires the temperature signal from the temperature probe through the energy storage unit. The non-contact power supply module includes a first coil and a second coil. The first coil is installed on the drive assembly, and the second coil can rotate with the rotor. The rotation of the second coil relative to the first coil forms a wireless power transmission structure. The second coil is electrically connected to the energy storage unit. This application enables long-term, reliable, real-time, and accurate measurement of sample temperature.

The present application relates to the technical field of detection, in particular to a method for detecting the exposure concentration of environmental endocrine disruptors in human body, comprising obtaining sample data, calculating sample concentration verification index; generating sample concentration step state signal according to sample concentration verification index; obtaining temperature data, calculating sample temperature evaluation index; generating sample temperature state signal according to sample temperature evaluation index; obtaining sample temperature data and sample refractive index data, calculating temperature-refraction evaluation index; generating temperature-refraction correlation signal according to temperature-refraction evaluation index; calculating stirring speed adjustment value according to temperature difference degree value; the present application analyzes the refractive index of sample and the temperature in the sample concentration process, adjusts the stirring speed in the sample concentration process, reduces the influence of sample processing process on the detection result, thereby improving the accuracy of the detection result of the exposure concentration of environmental endocrine disruptors in human body.

This invention relates to the field of materials testing technology and discloses an apparatus and method for testing the photothermal performance of photothermal agents. The apparatus includes a chamber, an ambient temperature control module, a sample carrying and temperature measurement module, a light source access module, a main control drive module, and a power detection module. The main control drive module is connected to a temperature sensor, a temperature control device, a thermocouple, and the power detection module, and is connected to an external laser light source through a light source control port. The main control drive module controls the ambient temperature inside the chamber to be at a set temperature through the temperature sensor and the temperature control device. After the ambient temperature meets the temperature stability criterion, it controls the external laser light source to output a test beam. The photothermal performance of the photothermal agent is evaluated based on the incident power of the test beam and the sample temperature collected at different times by the thermocouple. This invention can achieve photothermal conversion efficiency and stability testing with low sample consumption.

The present application relates to the technical field of melting point detection, and in particular to a quick detection method for the quality of anti-yellowing agent products based on a melting point apparatus. The method comprises: using the melting point apparatus to quickly heat the anti-yellowing agent sample, collecting the furnace temperature sequence and the transmitted light intensity sequence during the heating process, calculating the instantaneous phase change factor at each moment according to the light intensity change rate and the reference light intensity, constructing a dynamic thermal hysteresis compensation model based on the instantaneous phase change factor to nonlinearly correct the furnace temperature, and inverting the real sample temperature sequence. The initial melting point and the full melting point of the anti-yellowing agent sample are determined through feature point recognition, and the product purity score is calculated in combination with the theoretical melting point. The method introduces a phase change endothermic feedback mechanism based on the light intensity change rate, effectively eliminates the dynamic thermal hysteresis error under high heating rate, and improves the timeliness and accuracy of the quality detection of anti-yellowing agent products.

The invention discloses a sample temperature and humidity control experiment device of a small-angle neutron scattering spectrometer, which comprises a shell assembly, a heat preservation medium conveying mechanism and a reaction medium conveying mechanism, and is characterized in that the shell assembly comprises a shell, an incident window and an emergent window, the shell is provided with an incident port, an emergent port, an incident channel and a scattering channel, the incident window is installed at the incident port, and the scattering channel is installed at the emergent port; the emergent window is mounted at the emergent opening, the incident window, the emergent window and the shell jointly define a sample cavity, and a heat preservation space is further formed between the inner wall and the outer wall of the shell; the heat-insulating medium conveying mechanism circularly conveys a heat-insulating medium to the heat-insulating space; and the reaction medium conveying mechanism circularly conveys a reaction medium with preset temperature and humidity to the sample cavity. The heat preservation medium circularly flowing in the heat preservation space arranged around the sample cavity can avoid fluctuation of temperature and humidity in the sample cavity, ensure uniformity of the temperature and humidity in the sample cavity, avoid water vapor generated by condensation of the reaction medium due to temperature change, further avoid interference of humidity and improve accuracy of neutron scattering experiment results.

The invention discloses a multi-sample temperature and humidity control experimental device for a small-angle neutron scattering spectrometer, which comprises a shell assembly, a sample holder, a heat preservation medium conveying mechanism and a reaction medium conveying mechanism, and is characterized in that the shell assembly comprises a shell, an incident window and an emergent window, and the shell, the incident window and the emergent window jointly define a sample cavity; a heat preservation space is arranged between the inner wall and the outer wall of the shell and surrounds at least part of the sample cavity; the sample rack is used for bearing a plurality of samples and enabling two opposite surfaces of each sample to respectively face the incident window and the emergent window; the heat-preservation medium conveying mechanism is used for circularly conveying heat-preservation media to the heat-preservation space; the reaction medium conveying mechanism is used for circularly conveying a reaction medium with preset temperature and humidity to the sample cavity. According to the device, the sample cavity is subjected to heat preservation in a manner of circularly conveying a heat preservation medium into the heat preservation space, so that a sample in the sample cavity is in a constant temperature and humidity environment, and the accuracy of an experimental result is improved.

The invention belongs to the technical field of underground energy well cementation engineering testing, and particularly relates to a well cementation first-second interface sealing performance testing device and a sealing performance testing method.The well cementation first-second interface sealing performance testing device comprises an assembly sample, a true triaxial stress loading system, a sample temperature control system, a circulating injection and production simulation system, a sealing performance monitoring system and an ultrasonic monitoring system. The invention further provides a well cementation first and second interface sealing performance testing method for simulating the underground shaft environment by using the device provided by the invention. According to the device, the defects that an existing device is not real in simulated working condition, single in monitoring means and insufficient in positioning precision are overcome, the test result is more suitable for the field reality, and reliable technical support can be provided for well cementation interface sealing failure prevention and control, cement paste formula optimization and well cementation process improvement.

The application discloses a basalt melt crystallization temperature test furnace and a method thereof, and relates to the technical field of basalt fiber production.The basalt melt crystallization temperature test furnace comprises a protection box body, a fixed inner container, a hearth group, a heating pipe, a sample tank assembly, a monitoring module and a control module, wherein the heating pipe, the hearth group and the fixed inner container are sequentially arranged from inside to outside of the protection box body; the sample tank assembly is arranged in cooperation with the heating pipe; the monitoring module comprises a positioning module and a temperature measuring module; the positioning module is arranged on the fixed inner container, the hearth group and the heating pipe, is suitable for assisting the centering of the heating pipe and detecting the depth of the heating pipe, can help the sample tank assembly to accurately position the depth of the heating pipe, and can improve the accuracy and precision; the temperature measuring module is arranged on the sample tank assembly, is suitable for measuring the temperature of each sample after heating; and the control module is electrically connected with the sample tank assembly and the monitoring module, is suitable for helping to position the sample tank assembly, controlling the heating temperature and drawing a change curve diagram according to the sample temperature.

The invention discloses a sample temperature control method and system, electronic equipment, a medium and a product. The method comprises the following steps: acquiring temperature data of at least one to-be-monitored sample acquired by a temperature acquisition device, wherein the to-be-monitored sample is placed in a closed cavity; performing temperature change analysis on the temperature data of each to-be-monitored sample to determine a sample state; the control instruction of the cooling device is determined according to the sample state, and the operation state of the cooling device is controlled through the control instruction, so that the problems of low efficiency, incapability of quantitative control, incapability of quantitative judgment and the like caused by manual observation of whether cooling is completed are solved; the temperature data of the to-be-monitored sample is collected and subjected to temperature change analysis, real-time and accurate analysis of the state of the sample in the cooling process is achieved, and compared with manual experience judgment, the accuracy is high, and the efficiency is high; the operation state of the cooling device is controlled through the control instruction, and automatic cooling control, quantitative control and quantitative judgment are achieved.

A compact, wall mountable cryogenic LNG sample re-vaporization system and method from a steady state storage source for sample energy content analysis in space constrained environments such as in cruise or cargo ship engine rooms for mounting on a vertical surface with a cabinet containing a controller, having a cryogenic LNG sample input and a vaporized sample output, an input sample temperature detector, a flash vaporizer, a vaporized sample accumulator, a vaporized sample by-pass stream for flow rate measurement, a heated pressure regulator for regulating and conditioning the vaporized sample pressure and an output for communication of the conditioned vaporized sample to an analyzer.

The invention discloses an intelligent regulation and control system and method for precise preparation of solid samples, and relates to the field of system automatic control, the intelligent regulation and control system comprises a precise feeding system, a precise press-fit forming system, a graded sorting and discharging system and an intelligent regulation and control core module, all subsystems are sequentially arranged in the flowing direction of the samples, and a dual-data interaction link is established with the intelligent regulation and control core module; a closed-loop regulation and control system is formed, and the accurate feeding system can realize sample temperature and humidity pretreatment; the precise press-fit forming system has precise press-fit and full-parameter monitoring functions; the grading sorting discharging system integrates multi-dimensional nondestructive testing and intelligent sorting functions, an intelligent regulation and control core module adopts an MCU main control and deep learning edge processing unit framework, a multi-dimensional preparation parameter library is pre-stored, all preparation parameters are dynamically optimized by analyzing multi-source feedback data and applying an improved closed-loop control algorithm, full-process self-adaptive precise control is achieved, and the intelligent sorting discharging system is high in reliability and high in reliability. And the preparation quality and efficiency are ensured.

The invention relates to the technical field of melting point detection, in particular to an anti-yellowing agent product quality rapid detection method based on a melting point instrument. The method comprises the following steps: rapidly heating an anti-yellowing agent sample by using a melting point instrument, collecting a furnace temperature sequence and a transmission light intensity sequence in the heating process, calculating an instantaneous phase change factor at each moment according to a light intensity change rate and reference light intensity, constructing a dynamic thermal lag compensation model based on the instantaneous phase change factors to carry out nonlinear correction on the furnace temperature, and calculating the temperature of the anti-yellowing agent sample. A real sample temperature sequence is restored through inversion; the initial melting point and the full melting point of the anti-yellowing agent sample are determined through feature point identification, and the product purity score is calculated by combining the theoretical melting point. According to the method, a phase change heat absorption feedback mechanism based on the light intensity change rate is introduced, so that a dynamic thermal hysteresis error at a high heating rate is effectively eliminated, and the timeliness and accuracy of quality detection of an anti-yellowing agent product are improved.

This invention relates to a method for testing the current of a low-temperature superconducting Josephson junction in a non-magnetically shielded environment, comprising the following steps: placing the sample to be tested on a sample holder, and placing the sample holder at the bottom of the test rod; inserting the test rod into a Dewar filled with liquid helium to measure the temperature of the sample to be tested; and starting to measure the I of the sample to be tested when the temperature of the sample to be tested is lower than a preset temperature. cij Measure m times, and calculate the average value I based on the m measurements. ci‑av and uncertainty U i The sample to be tested is then heated to remove magnetic flux; it is determined whether the current test round has reached the set round number n. If not, the next round of testing is performed; if so, the average value I obtained from multiple pairs is used. ci‑av and uncertainty U i Construct a relational model; obtain U based on the relational model. i The average value I when = 0 ci‑av The average value I will be obtained. ci‑av As the critical current I in an unshielded environment c The empirical value. This invention solves the problems of high cost and low accuracy in existing low-temperature superconducting Josephson junction critical current measurement without parallel resistance.

The invention discloses a rapid temperature changing sample stage suitable for a vacuum environment, and belongs to the technical field of low-temperature experimental equipment. The sample table is fixedly connected with the mounting adapter through the heat insulation supporting piece, the mounting adapter is used for being fixed to a low-temperature cold platform, and the sample table is fixedly connected with the mounting adapter through the two ends of the flexible cold guide chain respectively; the nesting supporting structure is assembled on the outer side of the lower portion of the sample table and used for inhibiting axial position deviation of the sample table, and the cold shield wraps the nesting supporting structure and used for reducing radiation heat leakage; the temperature measuring and heating unit comprises a temperature sensor and a heating part, the temperature sensor is fixedly mounted at the center of the sample table, and the heating part is fixedly mounted at a preset mounting position of the sample table. By the adoption of the rapid temperature changing sample table suitable for the vacuum environment, rapid temperature changing and sample temperature regulation and control of a sample are achieved in the vacuum environment, temperature changing efficiency is improved, position stability is guaranteed, and the rapid temperature changing sample table adapts to experiment scenes needing rapid temperature changing.