42 results about "Extremes temperature" patented technology

The invention discloses an automobile part accelerated life test method and system, and the method comprises the steps: setting an extreme temperature cycle: setting a cycle of keeping a low temperature of-40 DEG C for 30 minutes and keeping a high temperature of 180 DEG C for 30 minutes, and setting a temperature change rate of 15 DEG C / min; a multi-physics field coupling test: in an extreme temperature cycle process, synchronously carrying out a resistance test, a withstand voltage test, a turn-to-turn insulation test, a vibration test, a humidity test and a salt spray test, and comprehensively evaluating the electrical, mechanical and environmental adaptability of the parts; multi-scale numerical simulation: establishing material-level, part-level and system-level coupling models, and predicting life distribution of parts; and data-driven optimization: based on historical test data and a numerical simulation result, establishing an acceleration model, dynamically adjusting a temperature cycle parameter and a stress level, and realizing maximization of test efficiency. Based on extreme temperature circulation (-40 DEG C / 30 minutes to 180 DEG C / 30 minutes) and multi-physical field coupling strengthening stress testing, the test time is shortened by 70% or above, and the evaluation error is smaller than or equal to + / -5%.

The invention relates to the technical field of shear thickening intelligent protection system control, in particular to a stable regulation and control method for the performance of a shear thickening intelligent protection system at an extreme temperature, which realizes breakthrough through three technical innovations: firstly, temperature subareas (low temperature, medium temperature and high temperature) and impact grading (light, medium and heavy) are preset in the first step; an accurate regulation and control reference is provided for different working conditions; 2, acquiring impact load, temperature and protection performance data (thickening amplitude and recovery time) in real time through a pressure sensor, a temperature sensor and a viscosity sensor (claim 3) adaptive to extreme temperature, and accurately judging the category of a'temperature-load 'working condition; 3, dynamically correcting a threshold value (claim 5) in combination with real-time performance feedback based on a working condition judgment result in the step 3, reducing the threshold value by 5-10% when the thickening amplitude is insufficient, and increasing the threshold value by 5-10% when the thickening amplitude is excessive; the method has the beneficial effects that the response threshold adaptation error can be greatly reduced under various extreme temperature working conditions, and the thickening response time is remarkably shortened.

The application provides a UAV charging generator set stable voltage output method and system under extreme temperature, relates to the technical field of generator set stable voltage output, and comprises the following steps: collecting environmental temperature data and synchronously establishing operation state data; after time sequence mapping, an external temperature disturbance response sequence is established; according to the external temperature disturbance response sequence and local temperature response data, the transmission path and response time difference of environmental temperature disturbance to each functional unit are analyzed, a temperature influence propagation time delay model is established; the temperature lag response characteristics and thermal attenuation characteristics of each functional unit are output, a thermal inertia window is established; a thermal state evolution trend is predicted, the thermal inertia window and the thermal state evolution trend are used to perform control collaborative adjustment of the generator set, and a dynamic stable voltage control strategy is established. Through the application, dynamic analysis and collaborative stable voltage control of environmental temperature disturbance are realized, and the technical effects of improving the stable voltage output stability and operation reliability of the generator set are achieved.

This invention belongs to the field of dehumidification equipment technology and discloses a precise temperature control system for a variable frequency dehumidifier with dual-mode temperature and humidity coordination. Through deep collaboration between the dual-mode decision module and the temperature and humidity calibration module, it dynamically switches between dehumidification-priority and temperature-priority modes based on a fuzzy PID fusion algorithm. Adjustment weights are allocated in real time according to temperature and humidity deviations. Combined with dew point temperature modeling and complementary correction technology, it achieves synchronous and precise control of both parameters. A multi-sensor layout covers key locations, coupled with an adaptive self-calibration mechanism and data preprocessing function, ensuring the accuracy and stability of the collected data and adapting to various extreme temperature and humidity conditions. During mode switching, collaborative commands link various execution modules, avoiding humidity rebound after cooling shutdown or dehumidification failure during temperature control. The variable frequency speed control module uses an adaptive fuzzy PID algorithm with multi-input fusion to dynamically optimize speed parameters. Combined with a dynamic frequency step size adjustment mechanism, it achieves rapid response to large deviations and precise fine-tuning for small deviations.

This invention provides an active heating method and system for a two-dimensional turntable servo mechanism, belonging to the field of laser communication technology. The method includes acquiring the feedback temperature and motor torque of the azimuth or pitch axis; when the motor torque is zero and the difference between the feedback temperature and the preset temperature is outside the preset temperature range, heating is performed by determining a first heating power based on the first d-axis current and the electrical control angle; when the motor torque is not zero and the difference between the feedback temperature and the preset temperature is outside the preset temperature range, heating is performed by determining a second heating power based on the second d-axis current and the q-axis current, until the temperature difference returns to the preset range and heating stops. This invention utilizes the heat generated by the motor's own current to replace external heating devices, achieving uniform heating from within, effectively reducing deformation and frictional torque fluctuations in key moving parts caused by temperature gradients, and improving the turning table's pointing accuracy and thermal stability under extreme temperature changes.

The invention discloses a thermal deformation pre-compensation method for a coreless superconducting cyclotron, and the method comprises the following steps: building a coreless high-temperature superconducting coil three-dimensional model which comprises a plurality of coils with different shapes and positions in the coreless high-temperature superconducting coil; carrying out a complete cooling process from 300K to 20K, and calculating form and position thermal deformation deviations of coils with different shapes and different positions in the model; pre-compensation calculation of the model is conducted through the form and position thermal deformation deviation; according to the pre-compensation amount at the low temperature of 20 K, the pre-compensation amount at the temperature of 300 K is reversely deduced, and the pre-compensation amount comprises a radial amplification coefficient and an axial amplification parameter; and iteration is repeated until the error between the 300K model with the pre-compensation amount and the design target is smaller than the error range. According to the method, the problems that in the prior art, the capability of accurately predicting the deformation behavior of the coil in the extreme temperature change process before the manufacturing stage is lacked, the positive design of pre-compensation cannot be actively carried out, and the basis of quantitative design is lacked are solved.

This application discloses a connector and a probe card for connecting a probe tip to a PCB board. The connector includes a connector body and a dielectric receiving tube disposed on the connector body. The dielectric receiving tube contains a dielectric medium with a specific heat capacity of not less than 1 KJ / (Kg·℃). This increased specific heat capacity of the connector improves thermal stability and reduces the impact of thermal disturbances on the PCB board from the probe tip side. On the one hand, when the system comes into contact with a heat source (or cold source), the temperature of the connector changes slowly, resulting in a relatively mild impact on the structure. On the other hand, when the system temperature reaches a steady state, it can smooth out disturbances caused by repeated contact and separation between the probe card and the wafer under test during the testing process. Ultimately, this helps to reduce or avoid thermal displacement and thermal deformation between components (such as between the connector and the probe tip), ensuring that the probe and chip pins correspond one-to-one under extreme temperature conditions (high and low temperatures) without misalignment.

The invention relates to a testing device and method, and the testing device is used for testing a sample, and comprises a temperature control box, a clamping assembly, a stress loading assembly, and a testing assembly. A temperature control cavity is formed in the temperature control box; the clamping assembly is arranged in the temperature control cavity and is used for clamping a sample; the stress loading assembly is arranged in the temperature control cavity and can reciprocate relative to the temperature control cavity; the stress loading assembly partially extends out of the temperature control box and is used for clamping the other end of the sample; the testing assembly is arranged outside the temperature control box, the testing assembly is connected with the part, extending out of the temperature control box, of the stress loading assembly, and the testing assembly can measure the force borne by the stress loading assembly. The clamping assembly and the stress loading assembly are matched to simulate the internal stress of the material in practical application, and the defect that stress loading does not exist in a traditional body material test is overcome; the partial stress loading assembly and the test assembly are arranged outside the temperature control box, so that the influence of extreme temperature in the temperature control cavity on measured data can be avoided.

The invention relates to a constant temperature control method and device for an optical crystal and a laser, and the control method comprises the following steps: S1, collecting the temperatures of at least two different positions of the optical crystal in real time, so as to obtain at least two actually measured temperature values reflecting the internal thermal state of the crystal; s2, acquiring at least one external disturbance parameter influencing the temperature of the optical crystal in real time; s3, based on the at least two actually measured temperature values, the external disturbance parameters and a preset target temperature, a control quantity is calculated through a compound control algorithm; and S4, according to the control quantity, driving a bidirectional temperature control actuator with heating and active refrigeration capabilities to adjust the temperature of the optical crystal. By constructing a double-point feedback-multi-mode feed-forward-bidirectional execution composite control architecture, the internal thermal gradient of the crystal is sensed in real time by utilizing double-point temperature measurement; various thermal disturbances are accurately counteracted in combination with feedforward compensation of laser power and environment temperature, and an actuator for active heating and rapid semiconductor refrigeration is integrated to realize millisecond-level bidirectional temperature control, so that the crystal steady-state temperature control precision is improved to + / -0.01 DEG C, the temperature stabilization time is remarkably shortened when the laser power suddenly changes, the anti-disturbance capability of the system is enhanced, and the service life of the system is prolonged. The crystal can keep extreme temperature stability for a long time under various working conditions, and finally the performance of the optical crystal and the long-term stability of the output power of a laser are greatly improved.

The utility model discloses a motor test load simulation device which comprises a supporting mechanism, a load tester and a motor body, the upper end of the supporting mechanism is provided with a heat preservation mechanism, the lower end of the supporting mechanism is provided with a temperature adjusting mechanism matched with the heat preservation mechanism, and the supporting mechanism comprises a detection table and a motor fixing frame. The motor body is fixedly installed on the motor fixing frame, an air inlet and an air outlet are formed in the position, close to the motor fixing frame, of the upper end face of the detection table, the heat preservation mechanism comprises a heat preservation cover and fixing bolts, and the heat preservation cover is arranged at the upper end of the motor body in a sleeving mode and rotationally connected with the detection table and fixed to the motor fixing frame through the fixing bolts. The temperature adjusting mechanism comprises a sealing box, an electric heating wire fan and a refrigerator. The motor test load simulation device has the advantages of rapid heating and cooling, uniform and stable temperature and convenient operation, and solves the problem that the motor test load simulation device cannot simulate an extreme temperature environment.

The present application relates to the technical field of temperature regulation, and particularly relates to an adaptive clothing fiber apparatus for temperature regulation. The apparatus comprises a multi-layer composite-structure fiber main body, an embedded intelligent regulation and control module, and a dynamic environment adaptation module, wherein the multi-layer composite-structure fiber main body sequentially comprises, from inside to outside, a thermally responsive layer, a deformation driving layer, a thermal conductivity enhancement layer and a protective compatibility layer, and generates deformation by means of sensing ambient temperature changes; the embedded intelligent regulation and control module implements heat conversion and intelligent control; and the dynamic environment adaptation module comprises a flexible piezoelectric sensor array, an airflow regulation and control channel and an electrostatic adsorption layer, and optimizes airflow regulation. The apparatus significantly improves the deformation response speed and temperature regulation accuracy of fibers under extreme temperature conditions, extends the endurance and service life thereof, and enhances the temperature regulation effect in complex dynamic environments.

The application provides a brake drum residual stress detection and shot blasting control parameter adaptive control method and system for an extreme temperature change environment, the method collects temperature, stress and strain data of the brake drum under extreme temperature change from room temperature to 600 DEG C through an embedded multi-source sensor array in real time; a finite element inversion algorithm of thermal-mechanical-phase change three-field coupling is used to dynamically reconstruct a three-dimensional residual stress field evolution model; based on the model, an optimal shot blasting parameter set is output through a multi-objective optimization decision model; a multi-nozzle collaborative control system is used to execute a differentiated shot blasting strategy, and adaptive processing is performed on the opening edge and the arc-shaped drum belly area of the brake drum; finally, quality parameters are detected online through a laser speckle interferometer and a microhardness tester, data is fed back to the decision model, a closed-loop control cycle is formed, and independent and continuous optimization of process parameters is realized, and the system correspondingly includes five modules of sensing detection, stress reconstruction, intelligent decision, execution control and quality feedback.

The application discloses a method for determining the Debye temperature of a crystal material, and comprises the following steps: collecting the isobaric heat capacity data C P (T) of a crystal material in a temperature range; P (T) of the crystal material, and finding the temperature T0 corresponding to the extreme point of C P (T) by derivation; P (T) of the crystal material, and calculating the isochoric heat capacity C P (T) of the crystal material according to a thermodynamic formula; V (T) of the crystal material according to a Debye isochoric heat capacity evaluation model; V (T) of the crystal material according to the extreme temperature T0; P (T0) determined according to the extreme temperature T0 and the isochoric Debye temperature θ V (T0) of T0, and the temperature closest to the isochoric Debye temperature θ (T0) is the Debye temperature of the material. The method for determining the Debye temperature of the crystal material is simple and easy to implement, and can provide strong support for rapid evaluation and accurate design of material performance in the material research and development process.

The invention relates to the technical field of meteorology and power system crossing, and discloses a national extreme temperature event detection method and system, and the detection method comprises the steps: calculating the temperature abnormal value and standard deviation multiple of each grid point of the whole country every day, and carrying out the statistics of the proportion of abnormal grid points of the same sign; if the proportion of the same-symbol abnormal grid points is greater than or equal to a first preset value and the proportion of the grid points with the absolute value of the standard deviation multiple greater than or equal to a second preset value in the same-symbol abnormal grid points is greater than or equal to a third preset value, determining that the event is a national consistent extreme temperature event; if the ratio of the grid points with the standard deviation multiple larger than or equal to the second preset value in each grid point every day is larger than or equal to a fourth preset value, and the ratio of the grid points with the standard deviation multiple smaller than or equal to the fifth preset value in each grid point every day is larger than or equal to the fourth preset value, it is judged that a nationwide anti-phase type extreme temperature event occurs. Based on a nationwide extreme temperature event judgment rule of a dual-space coverage threshold, accurate identification of a nationwide large-scale extreme temperature event is realized.

The application provides a nut diameter measurement method and device under extreme temperature, and the measurement device comprises a detection base, a nut placing table, a micrometer, a guide cylinder, a temperature insulation rod, a temperature insulation block, a ball, and a temperature measuring instrument. The measurement method comprises providing a nut to be measured and a required extreme temperature, and selecting a corresponding ball according to the nut. The nut is placed on the nut placing table, and the measurement device is adjusted according to the size of the nut. The temperature of the nut is set to a suitable temperature by a heating / cooling machine, and then the nut is quickly installed in the measurement device. The temperature is monitored by the temperature measuring instrument, and when the temperature of the nut reaches the required extreme temperature, the measurement results of each micrometer are recorded. The diameter value under room temperature is measured, and the diameter value under the extreme temperature is obtained by calculation. The technical scheme of the application solves the problems of difficult measurement and inaccurate measurement of the nut diameter under the extreme temperature.

The invention belongs to the technical field of high-voltage tests, and discloses a direct-current support capacitor damage test method and system covering temperature and pressure stress, and the method comprises the steps: firstly, carrying out the heating treatment of a capacitor unit, synchronously arranging a temperature collection unit, obtaining the temperature of a housing in real time, and constructing an extreme temperature stress working condition; the defects that the influence of temperature on the safety performance of the capacitor is neglected and extreme temperature environment verification is lacked in the prior art are overcome; then voltage is gradually applied until the capacitor generates self-healing failure, and then the direct-current power supply is adjusted to the rated voltage to re-apply the voltage to the preset value; and finally, the capacitor unit preprocessed under the extreme temperature and pressure working condition is installed in a simulation converter valve operation loop, and the test is completed by observing the fault condition. According to the method provided by the invention, the operation state of the capacitor under the extreme working condition is restored, the verification blank in the prior art is filled, the accuracy and practicability of safety performance verification are improved, and effective technical support is provided for reliability evaluation of the direct-current support capacitor.

The utility model relates to the technical field of environment simulation test equipment, and particularly discloses a sealing environment bin with a multilayer sealing structure, which comprises a box body, a box door with a double-open structure is arranged at the front end of the box body, a silica gel sealing ring is embedded in the inner side of the box door, and a fluororubber sealing ring is embedded in the outer side of the box door. An air cylinder is installed at the top of the front end face of the box body, the side wall of the box body communicates with a connecting pipe, and through the design of a multi-layer sealing box door, a pipeline composite sealing connector and an optimized air duct circulating system, the overall sealing reliability and the temperature field uniformity of the environment bin under extreme temperature alternation are remarkably improved; the cold and hot dual-mode temperature control system achieves more efficient and accurate temperature regulation and control, the heat preservation box wall reduces energy consumption, the operability and safety of the equipment are improved through the convenient control system and the safety observation window, the problems that traditional equipment is prone to failure in sealing, low in temperature control efficiency and lack of protection are solved, and the service life of the equipment is prolonged. And the accuracy and the reliability of sealing performance testing of products such as fasteners are improved.

The invention relates to a dry gas sealing system adapting to an extreme temperature working condition and a temperature control method, and relates to the technical field of dry gas sealing, the dry gas sealing system comprises a dry gas sealing structure, a sealing cavity and a temperature control device, the temperature control device comprises an input pipe and an output pipe, and the input pipe and the output pipe are used for inputting and outputting a medium into and out of the sealing cavity; the detection piece is used for detecting the temperature in the sealing cavity; and the thermal medium mechanism and the cooling medium mechanism are communicated with the input pipe and the output pipe through a control assembly and enable the control assembly to perform control according to the temperature detected by the detection piece. The temperature in the sealing cavity is detected through the detection piece, if the detected temperature is lower than the minimum value of the proper temperature range, the control assembly starts and controls the thermal medium mechanism to heat the sealing cavity, and if the detected temperature is higher than the maximum value of the proper temperature range, the control assembly controls the cooling medium mechanism to cool the interior of the sealing cavity. The problems of material failure, thermal deformation out of control and the like of the dry gas sealing structure are reduced, and the sealing effect of the dry gas sealing structure is improved.

The invention discloses a method for realizing controllable synthesis of polyhedral cuprous oxide based on sound wave temperature control, which comprises the following steps: (1) preparation of a mixed solvent, (2) preparation of a temperature control environment, (3) preparation of a mixed ligand complex precursor, (4) sound wave reaction, and (5) washing and drying of a material. A mixed ligand complex system formed by common coordination of acetate, ethylene glycol molecules and water molecules slowly releases Cu < 2 + >, and the anisotropic growth rate of the crystal can be controlled to induce huge development of the morphology of pure-phase cuprous oxide through differential extreme temperature differences between local high temperature and different temperature environments by virtue of an ultrasonic cavitation effect. The method has the characteristics of low raw material cost, simple equipment, environmental friendliness and the like, the synthesis process is simple, convenient, feasible and highly controllable, Cu < 2 + > is slowly released skillfully based on a mixed ligand complex system, the difference extreme temperature difference between the local high temperature and the external environment of the ultrasonic cavitation effect is utilized, and the method is suitable for industrial production. The controllable development of the pure-phase cuprous oxide polyhedral morphology is successfully realized, and the diversity of the material in the aspects of morphology design and structure regulation and control is expanded. The material has a wide application prospect in the aspect of functional material development in the field of clean energy.

The buckle provided by the application is used for supporting and connecting two electric connectors, and comprises a supporting part, a connecting hole and a pair of clamping shoulders. The top of the supporting part is provided with a supporting surface, the connecting hole extends into the supporting part through the supporting surface, and the pair of clamping shoulders are respectively arranged on the opposite first side and second side of the supporting part and protrude outward from the supporting part to form. At least the top of the pair of clamping shoulders is made of a first elastic material, so that when the buckle is installed in the receiving groove of the buckle receiving part, the pair of clamping shoulders can be extruded with the buckle receiving part to provide an elastic deformation amount, and the elastic deformation amount enables the buckle to move a distance relative to the buckle receiving part towards the electric connector when the buckle and the electric connector are fastened and connected, so as to compensate for the gap between the electric connector and the supporting surface of the buckle, make the electric connection between the electric connectors more stable and reliable, and avoid loosening between the electric connectors in an extreme temperature environment.

Provided are a special environment simulation device and method, relating to the technical field of aerospace, aviation, materials, and construction. The device comprises a vacuum chamber (10), a vacuum simulation system (20), a temperature simulation system, a low-gravity simulation system (40), and a control system (50), wherein the vacuum simulation system (20) is used for regulating the vacuum level inside the vacuum chamber (10); the temperature simulation system is used for regulating the temperature inside the vacuum chamber (10) by means of a heating temperature control system (31) and a refrigeration system (32); and the low-gravity simulation system (40) is used for regulating low-gravity parameter values inside the vacuum chamber (10), thereby creating, on the ground, simulated lunar surface environmental conditions, including ultra-high vacuum, low gravity, and extreme temperature variations. By integrating technologies such as low-gravity simulation, temperature simulation, and low-vacuum simulation, coupled environmental simulation of multiple lunar surface factors is achieved, providing important technical support for lunar exploration and deep-space missions, allowing for effective performance testing of lunar exploration equipment and engineering materials, as well as the conduct of relevant scientific experiments.

- Method and device for determining and using a diagnostic tool comprising an extreme temperature response spectrum. - The method comprises a step (E1) of receiving at least one temperature curve representing a temperature variation over time at a given geographical location, a processing step (E2) comprising a series of successive substeps (E2A, E2B, E2C), implemented iteratively for different values ​​of a characteristic time associated with a type of equipment, comprising a substep (E2A) for filtering the temperature curve using a first-order filter having said characteristic time as its time constant, a substep (E2B) for extracting a temperature value corresponding to a specific temperature parameter, and a substep (E2C) for associating this extracted temperature value with the characteristic time.The pairs of values ​​obtained at the end of the iterations form an extreme temperature response spectrum, and a step (E3) is used to perform comparisons, at least from this spectrum, to carry out a diagnosis. Figure for the abstract: Fig 4.

The invention relates to the technical field of magnetorheological dampers, in particular to a teleoperation arm magnetorheological joint extreme temperature adjusting mechanism which comprises a shell and a rotor rotationally connected into the shell through dynamic seal, a first filling area filled with magnetorheological fluid is formed in the shell, and a coil with a magnetic field covering the first filling area is installed in the rotor. Through the arranged temperature adjusting mechanism, after the temperature of the magnetorheological fluid rises, the phase change material in the second filling area absorbs heat and then is in a molten state, so that the temperature of the magnetorheological fluid is reduced, and if the temperature of the magnetorheological fluid continuously exceeds the standard, when a detection value of a temperature sensor reaches a high-temperature threshold value, the magnetorheological fluid is cooled. The temperature sensor starts the refrigeration sheet to work through a controller signal, the effect of cooling the magnetorheological fluid is achieved, through the arranged phase change material and the refrigeration sheet, passive heat exchange and active refrigeration are achieved, the dependency of the magnetorheological fluid on the external environment temperature is reduced, and the adaptability of the mechanical arm in the extreme environment is improved.

The utility model discloses a high-low temperature corrosion environment system, which comprises a corrosion box, a high-low temperature sensor, a high-low temperature sensor, a high-low temperature sensor, a high-low temperature sensor, a high-low temperature sensor, a high-low temperature sensor and a high-low temperature sensor, the environment temperature control system is connected with the corrosion box through a connecting pipeline, so that the corrosion liquid circularly flows between the corrosion box and the environment temperature control system, and finally the corrosion liquid in the corrosion box is controlled to be stabilized at a designed given value; a refrigerating system and a heating system are arranged in the environment temperature control system, and temperature adjustment is achieved through closed-loop control of a temperature control instrument. The device has the characteristics of convenience in corrosive liquid filling, reliability in corrosive liquid temperature control, small occupied area, low maintenance cost and the like. The device has the characteristics of high integration level, intelligent operation and low-cost maintenance, the experiment efficiency can be remarkably improved, the comprehensive cost of a user is reduced, an advanced tool is provided for reliability evaluation of a metal material in an extreme environment, and the technical blank of current stress corrosion test equipment in the aspect of extreme temperature simulation is filled.

This invention relates to the field of testing device technology, specifically to a device for testing the thermal fatigue resistance of mold steel. The device includes an intelligent testing unit, a top mounting unit above the intelligent testing unit, an indirect control unit inside the top mounting unit, and two sets of ingot processing units outside the indirect control unit. By setting up two independent ingot processing units, each set includes an independent insertion cavity, with one cavity specifically for cooling and the other for heating. The mold steel ingot to be tested is smoothly transferred between the two cavities through the sliding of the cavity slider. This eliminates the need for a single insertion cavity to repeatedly endure extreme temperature alternations of "cooling-heating." Combined with intelligent quality inspection sensors, the device detects the ingot, avoiding thermal stress caused by repeated thermal expansion and contraction of the cavity material. This fundamentally eliminates the problem that frequent cold and hot cycles not only affect the surface of the mold steel ingot but also adversely affect the cavity material itself.

The utility model provides a utilize the underground cultivation corral of ground temperature regulation, including the corral main part, the equal distance of the top of corral main part has opened six group ventilation, every group ventilation of corral body rotatoryly installed two top windows, two the rotatoryly connected place of top window is fixed with connecting shaft, the bottom of corral main part is fixed with two group exchange pipe, the both ends of exchange pipe are worn out corral main part back, exchange pipe is in the bottom of corral main part and is in the shape of a snake arrangement, the back bottom of corral main part is fixed with the air intake box, the inside of air intake box is opened with two air inlets and two air outlets, relative to prior art, through the corral is submerged to the ground below two meters, make full use of the stability of ground temperature, the temperature in the corral is automatically regulated, solve the adverse effect of winter and summer extreme temperature on the growth of cattle and sheep, guarantee the forage conversion rate, improve the breeding efficiency.

The application provides a seamless line long-term cyclic temperature load mode forming method and system applicable to time history analysis, belongs to the technical field of railway seamless line operation and maintenance, determines a seamless line work point position, and obtains local environmental temperature data; an empirical wavelet decomposition algorithm is used to separate annual cycle signals and daily cycle signals of the environmental temperature; annual temperature components of the cyclic load are obtained through formula fitting; daily extreme temperature curves of the rail temperature are obtained; daily temperature components are calculated according to the geographical position and in combination with daily extreme temperature characteristics; the annual temperature components and the daily temperature components are superimposed to form complete long-term cyclic temperature loads. The application can calculate the temperature load according to meteorological data and in combination with the seamless line design specification, so that the long-term cyclic temperature load mode has good universality; time-frequency analysis methods are used to extract and analyze the time characteristics of the seamless line temperature data, which can provide a reference basis for the design of the long-term cyclic temperature load of the seamless line.

The invention belongs to the technical field of bridge engineering, and discloses a large-span cable-stayed bridge damping cable damping optimization method, which specifically comprises the following steps of: 1, establishing a bridge finite element model considering the temperature related characteristics of a damper, and according to a bridge design drawing, constructing a bridge finite element model; structural analysis software is adopted to construct a three-dimensional finite element model comprising a main beam, a bridge tower, an inclined damping cable, a support and a foundation. The mechanical parameters of the damper are defined as temperature related variables, the double-characteristic temperature is determined in combination with bridge site long-term meteorological data, and the influence of the temperature on the performance of the damper is accurately represented in cooperation with a viscosity-temperature characteristic curve with high fitting precision; through standardized dynamic response analysis and numerical optimization under the working condition of double extreme temperatures, the obtained optimal parameters can meet the requirements of extreme environments in summer and winter at the same time, and the problem of seasonal performance failure caused by traditional fixed parameter design is thoroughly solved; and then all-weather stable work of the damper is ensured through full-temperature-range multi-node verification.

The invention discloses a wide-temperature-range noise reduction control device and method for a variable-frequency rotary compressor, and relates to the technical field of compressors. According to the method, under the wide-temperature-range working condition, the environment temperature is collected through a temperature sensor, and the environment temperature is divided into a low-temperature range, a medium-temperature range and a high-temperature range; calculating load coefficients by combining operation parameters such as exhaust pressure and motor current, and dividing the load coefficients into high, medium and low load grades; and differential noise reduction strategies are executed according to different temperature domain-load combination scenes, specifically, the oil supply pressure is dynamically adjusted during high load in a low-temperature domain, the preset resonant frequency is avoided during conventional load in a medium-temperature domain, and the carrier frequency and the modulation mode of variable frequency driving are optimized during low load in the high-temperature domain. Wide-temperature-range all-working-condition accurate noise reduction is achieved, the operation stability of the compressor under the extreme temperature and the complex load is improved, the noise reduction problem that the compressor is difficult to adapt to the all-temperature-range working condition in the prior art is solved, and the use comfort of a user is improved.

The invention discloses a temperature and strain integrated measurement method and system for a turbine blade at an extreme temperature, and relates to the technical field of temperature and strain measurement. According to the invention, the 3CCD camera is adopted, so that temperature-strain integrated measurement is realized. By means of the double-color temperature measurement method and the double-channel light path design of the light splitting device, high-precision full-field high-temperature measurement is achieved, and high-precision strain measurement is also achieved; the method specifically comprises the following steps: (1) accurate measurement of the full-field temperature at the ultrahigh temperature is realized, the adaptability is good, the influence of part of environmental factors is overcome, and the problems of determining the emissivity and the like are avoided; (2) the strain measurement at the ultrahigh temperature is realized; (3) temperature-strain integrated measurement is realized; and (4) dividing the visible light image on the surface of the measured object into two beams by using an ingenious light splitting device, and simultaneously reaching the two CCD units of the camera, so that the effect of two or more cameras can be achieved only through one camera.