11 results about "Change temperature" patented technology

The utility model provides a device for improving the cooling uniformity of a high-carbon steel wire rod, the device for improving the cooling uniformity of the high-carbon steel wire rod comprises an air cooling roller way, a plurality of Jinling devices, a plurality of fans and a plurality of temperature measuring assemblies, the air cooling roller way is used for conveying the wire rod; the multiple Jialing devices are arranged on the lower side of the air cooling roller way at intervals. The plurality of fans are in one-to-one correspondence with the Jiangling devices and are used for supplying air to the Jiangling devices; the multiple temperature measuring assemblies are arranged at intervals in the conveying direction of the air cooling roller way. Wherein the temperature measuring assembly comprises a support, a thermal imager and a point temperature instrument, and the thermal imager is connected with the support; the point temperature instrument and the thermal imager are arranged at an interval in the vertical direction, and the point temperature instrument is connected with the support. According to the device for improving the cooling uniformity of the high-carbon steel wire rod, provided by the utility model, the cooling rate of the wire rod in a phase-change temperature range is accurately controlled, and the temperature difference of the same circle in a phase-change area is reduced.

Variable temperature analytical assemblies are provided and / or methods for changing temperatures of a mass are provided. Low thermal conductance components and / or assemblies are also provided. Methods for thermally isolating a mass from a support structure are also provided.

The present invention relates to the field of material testing technology and discloses a method and system for calibrating the phase change temperature of a phase change material. The method comprises: collecting surface temperature distribution data and crystal structure parameters of the phase change material using a dual-modal synchronous monitor and establishing a temperature-structure correlation matrix; determining the surface temperature distribution data corresponding to the mutation moment based on the temperature-structure correlation matrix when the crystal structure parameters undergo a sudden change, and calculating the initial phase change temperature range; constructing a nonlinear mapping model between the initial phase change temperature range and the heating rate, and dynamically compensating the initial phase change temperature range based on the nonlinear mapping model to obtain a corrected phase change temperature; inputting the corrected phase change temperature into a gradient temperature control module containing a standard sample; comparing the offset between the actual phase change position of the reference material and the theoretical position, and reversely correcting the corrected phase change temperature based on the offset to obtain a final calibration temperature. The present invention can improve the accuracy of phase change temperature calibration of phase change materials.

The invention discloses a method for measuring the positioning accuracy of a nano-circular time grating under different temperature conditions, and the method comprises the steps: locally controlling the temperature environment of a to-be-measured nano-circular time grating through an incubator, and fixing a rotor of the to-be-measured nano-circular time grating and a rotor of a reference encoder at the upper and lower ends of a same rotating shaft; synchronous measurement of the to-be-measured nanometer circular time grating and the angular displacement signal of the reference encoder is realized. On the basis, the positioning precision data of the to-be-measured nanometer circular time grating under different constant temperature and linear change temperature conditions can be obtained. The technical problem that in the prior art, only the static temperature stability of the nanometer circular time grating can be measured, and a dynamic positioning precision measuring method is lacked is solved. Furthermore, by analyzing the positioning precision data under different temperature conditions, the influence degree of the temperature on the positioning precision can be quantitatively evaluated, the adaptive capacity of the nanometer circular time grating to the temperature environment is further disclosed, and a key basis is provided for performance evaluation, optimization design and applicability judgment of the nanometer circular time grating under the complex temperature change working condition.

The application discloses a method for instant temperature equivalent to instant pressure effect in fracturability research, which comprises the following steps: (1) obtaining fracturability F by basic characteristic data and comparing with mechanical parameters; (2) given a specific temperature t0, calculating the fracturability by changing confining pressure σ constantly, fitting F(σ)=f t0 (σ) and curve; (3) given a specific confining pressure σ0, calculating the fracturability by changing temperature t constantly, fitting F(t)=f σ0 (t) and curve; (4) making fitting change curves of confining pressure σ and F(σ), temperature t and F(t) in a double y-axis coordinate system respectively, and letting F(σ)=F(t), so that the corresponding confining pressure value σ n of a certain temperature value t n under the confining pressure σ0 is obtained. The method can calculate the corresponding confining pressure value under the temperature t0 equivalent to a certain temperature value under the confining pressure σ0, and can perfect the analysis model of rock mechanics properties affected by temperature and pressure.

The present application relates to the technical field of laser cutting, and specifically relates to a method for capacitive compensation of a laser cutting system for environmental temperature change. The method comprises the following steps: 1) initializing the position of a laser cutting head, placing the laser cutting head in a temperature box, collecting multiple sets of temperature values and corresponding capacitive values by changing the temperature, and obtaining a temperature value-capacitive value relationship curve; 2) testing the temperature value-capacitive value relationship curve by changing different conditions; 3) calculating the slope of the temperature value-capacitive value relationship curve in different temperature intervals; 4) performing capacitive calibration in a conventional environment and recording the temperature value at the time of calibration; and 5) compensating the capacitive value by using the slope of the relationship curve and the calibration temperature value when the temperature changes. The present application solves the problem of capacitive value increase or decrease caused by environmental temperature change through capacitive compensation, ensures that the cutting head maintains a stable height when following the cutting, and thus achieves the expected cutting effect.

A cooling device suitable for a human body. The cooling device comprises a phase-change composite material and an outer coating material, wherein the phase-change composite material is packaged inside the outer coating material. During a heat absorption and cooling process, the phase-change composite material is converted into a gel phase from a solid phase. The phase-change composite material mainly comprises a phase-change material and a gelling agent, wherein the phase-change material is an organic phase-change material, and has a phase-change temperature of 2-38°C; and the gelling agent mainly comprises two chain segments: one being a chain segment which is miscible with the phase-change material, and the other one being a chain segment which spontaneously forms physical crosslinking by means of non-covalent bond interaction. The gelling agent and the phase-change material mutually construct a three-dimensional network structure to obtain the phase-change composite material. When filling a cooling device, the phase-change composite material and the gelling agent are firstly heated and melted, then cooled to the phase-change temperature and the gelation temperature or higher, and packaged to obtain the cooling device. The cooling device has the advantages of a short curing time, a long cooling duration, good safety performance, etc.

Variable temperature analytical assemblies are provided and / or methods for changing temperatures of a mass are provided. Low thermal conductance components and / or assemblies are also provided. Methods for thermally isolating a mass from a support structure are also provided.

Provided is a thermal analysis apparatus with which it is possible to easily perform detailed analysis of a change in the state of a sample, while visually grasping in detail the color of a sample and a change therein which accompanies a change in the temperature of the sample. Also provided is a thermal analysis apparatus which acquires thermal analysis data by measuring and calculating physical properties of a sample while changing temperature of the sample by heating or cooling and acquires image data by imaging the sample. Additionally, the apparatus is configured to display a graph of the thermal analysis data relating to temperature or time, a sample image of the sample data, color information data of range and type selected from the sample image, and a gradation in which colors generated from the color information data are arranged in correspondence with temperature or time, on a display.

Method and system are designed for storing and / or transporting temperature-sensitive materials. The system is designed to keep a payload within a desired temperature range of +2° C. to +8° C. for an extended time in a warm ambient environment. The system includes a thermally insulated container and first and second phase-change materials, each of the phase-change materials having a different solid / liquid phase-change temperature. Both phase-change materials are preconditioned to a solid state for pack-out. The first phase-change material has a solid / liquid phase-change temperature that is within the desired temperature range and that is at or below a hibernation temperature of about +5° C. to +6° C. The second phase-change material has a solid / liquid phase-change temperature that is above the hibernation temperature. When placed in the warm ambient environment, both phase-change materials move towards melting; however, when subsequently placed in hibernation, the second phase-change material reverses the direction of its phase change, becoming recharged.