810 results about "Extreme temperature" patented technology

The invention discloses an LSTM-COF-based power equipment data anomaly detection method and system, and relates to the technical field of power equipment state monitoring, and the method comprises the following steps: collecting historical data, and constructing a three-dimensional data matrix; predicting equipment parameters at the extreme temperature through an LSTM model; compressing the features, quantifying the covariance deviation degree between the features in combination with a correlation abnormal factor algorithm, and detecting abnormal points; the system integrates a data collection module, a data preprocessing module, a data prediction module, a detection model generation module and a visualization module. According to the method, the multi-dimensional historical operation data of the power equipment is collected, the equipment parameters in the extreme temperature environment are predicted by using the LSTM model, the principal component analysis dimensionality reduction and correlation abnormal factor algorithms are combined, insulation degradation type and electrical connection type faults can be dynamically identified, the data distribution change is adapted through the incremental learning mechanism, and the fault diagnosis accuracy is improved. The problems of low high-dimensional data processing efficiency and poor anomaly detection adaptability due to manual experience dependence in a traditional method are solved.

The invention discloses an automatic wafer packaging detection and sorting system, which relates to the field of semiconductor manufacturing and detection, and comprises the following steps: automatically acquiring packaged wafers from packaging equipment and a storehouse by integrating automatic logistics and intelligent scheduling; high-precision camera multispectral detection is combined with AI analysis, and surface defects of the packaged wafer are detected; terahertz imaging and X-ray are combined with an AI technology, the internal structure of a packaged wafer welding spot is detected, and holes, cracks and welding quality defects are recognized; electrical detection is carried out on the packaged wafer through a flexible probe, and intelligent fault positioning is carried out in combination with AI; an extreme temperature change is simulated to carry out a thermal cycle test, and thermal stress is monitored in real time; and an AI optimization temperature curve and atmosphere control are adopted to simulate a multiple reflow soldering process. By integrating an advanced detection technology and an intelligent means, the wafer packaging detection precision and sorting efficiency are improved, meanwhile, the production cost is reduced, and powerful data support is provided for continuous improvement.

The invention relates to a simulation and optimization method and device for a battery thermal management system, and belongs to the technical field of battery simulation. The method comprises the following steps: constructing a battery thermal simulation model based on physical characteristics of a battery; establishing a heat conduction model and a heat balance equation of the battery, substituting the heat conduction model and the heat balance equation into the battery thermal simulation model, and simulating temperature distribution of the battery under different working conditions by using a numerical solution method to obtain a simulation result; optimizing the design scheme of the battery thermal management system based on the simulation result; verifying the optimized battery thermal management system based on an actual test environment to obtain a verification result so as to determine whether a design scheme of the optimized battery thermal management system is modified or not, and performing thermal management on the battery based on the optimized battery thermal management system under the condition of determining that the design scheme is not modified; the stability and safety of the battery system under the extreme temperature condition can be effectively improved, the service life of the battery is prolonged, and the energy utilization efficiency of the battery is improved.

The invention discloses a temperature calibration method and system for a temperature sensor, and belongs to the technical field of temperature testing, and the method specifically comprises the steps: reading temperature data in real time through an intelligent temperature sensor, and transmitting the temperature data to a processing system; the processing system verifies and decodes the received data and then constructs a self-adaptive temperature reference model in combination with historical temperature data and current environment parameters; temperature deviation is identified, deviation reasons are analyzed through a machine learning algorithm, the temperature change trend is predicted, and correction parameters are automatically generated; the correction parameters are automatically distributed to the equipment end through the intelligent contract, so that instant adjustment and effect feedback of equipment setting are realized; the processing system collects feedback data, evaluates an adjustment effect, optimizes a self-adaptive temperature reference model and corrects a parameter generation strategy according to the adjustment effect, and forms a closed-loop optimization mechanism; according to the invention, the calibration efficiency and precision are improved, the environmental adaptability is enhanced, and the method is especially suitable for high-precision measurement requirements under extreme temperature conditions.

A system, method, and process for direct, precise measurement of extension / strain of a metallic round or flat tensile specimen or measurement of crack growth rates on a metallic CT specimen under control forces of extreme temperature, pressure and adverse environment are applied to a pre-crack metallic specimen within an autoclave.

The invention discloses a UPS battery temperature control structure and a temperature control method thereof, and the structure comprises a battery module, a thermoelectric coupling layer, and a heat insulation housing. The battery module consists of a plurality of battery units, and unit gaps are filled with a composite phase change material; the thermoelectric coupling layer comprises a semiconductor thermoelectric module array and a heat conduction assembly, and precise heat conduction is achieved through bidirectional temperature control of semiconductor thermoelectric modules and directional heat conduction of heat pipes. The heat insulation shell comprises an inner aerogel heat insulation layer and a radiation coating and isolates external extreme temperature interference. The temperature control method comprises the steps of monitoring the battery temperature, the environment temperature and the phase change state of the composite phase change material in real time, dynamically selecting a pure composite phase change material buffer mode and a semiconductor thermoelectric module active or mixed mode, and generating power and recharging energy by using the temperature difference of the cold end and the hot end of the semiconductor thermoelectric module. Through the synergistic effect of the composite phase change material, the semiconductor thermoelectric module and the shell, the temperature of the battery can be stabilized without external constant temperature equipment, and the temperature control energy consumption is low.

The invention discloses a state intelligent monitoring and life prediction system and method for industrial equipment. The system comprises a multi-physical field sensor module, a data processing module, a model construction module, an analysis and prediction platform and an output and alarm module. The infrared sensing sub-module, the ultrasonic sensing sub-module and the electromagnetic sensing sub-module are respectively used for detecting surface temperature change, internal damage and material performance change of parts. The data processing module receives sensor data, and data standardization is carried out through the ultrasonic and infrared processing sub-module. The model construction module constructs and updates a wear model in real time based on monitoring data, and adjusts model parameters in combination with a wear state. And the analysis and prediction platform fuses historical and real-time data, calculates the current wear rate, predicts the remaining service life and generates a wear report. According to the invention, through multi-physical field data fusion and intelligent analysis, the accuracy and stability of wear monitoring are improved, and the method is suitable for industrial equipment in extreme temperature and high dust environment.

The invention discloses an electronic function test system of a high-voltage PTC (Positive Temperature Coefficient) electric heater, which relates to the technical field of PTC electric heaters and is characterized in that extreme temperature, humidity and voltage disturbance data are acquired in a programmable multi-dimensional environment simulation cabin, and the temperature deviation of the high-voltage PTC electric heater is predicted by using a multi-channel fusion and compensation model; according to the method, the high-voltage PTC electric heater is used as a power source, the output power is adjusted in a real-time feedforward and feedback mode in the self-adaptive controller, finally, through dynamic calibration and closed-loop verification, a model and gain parameters are optimized in multiple scenes, a complete system which can deal with large environmental changes and is high in temperature control precision is formed, the stability and safety of the high-voltage PTC electric heater under the severe working condition are remarkably improved, and the high-voltage PTC electric heater is suitable for being used in the field of electric heaters. And overshoot and lag are reduced, the energy utilization efficiency is improved, the system is suitable for industrial heating, vehicle warm air and other scenes needing high reliability and quick response, and the maintenance cost can be effectively reduced.

The invention relates to the technical field of high polymer material chemistry, and discloses a high and low temperature resistant anti-yellowing optical adhesive and a preparation process thereof, the high and low temperature resistant anti-yellowing optical adhesive comprises the following components by weight: 40-60% of modified organic silicon resin, 20-30% of urethane acrylate, 10-15% of alicyclic epoxy resin, 0.5-5% of a nano inorganic filler, 0.8-2.5% of an anti-yellowing composite reagent, and the balance of a solvent. The coating is prepared from the following components in percentage by weight: 0.5 to 1.5 percent of 2-hydroxy-2-methyl-1-phenyl-1-acetone, 0.1 to 0.3 percent of fluorine modified polyacrylate flatting agent and 0.3 to 1.0 percent of chloroplatinic acid-divinyl tetramethyl disiloxane complex catalyst. The preparation method comprises the following steps: mixing alpha, omega-dihydroxy polydimethylsiloxane and phenyltrimethoxysilane according to a mass ratio of 8: 2-7: 3, adding 0.3-1.0% of a chloroplatinic acid-divinyl tetramethyl disiloxane complex catalyst, and raising the temperature by stages under the protection of nitrogen, so that the glass transition temperature of the adhesive can reach 120 DEG C below zero and 125 DEG C, and the temperature of the adhesive can reach 120 DEG C below zero and 125 DEG C below zero. And the long-term service requirement of the optical device in an extreme temperature environment is met.

The invention relates to the technical field of organic silicon pouring sealants, and discloses a high-thermal-conductivity low-viscosity organic silicon pouring sealant and a preparation method thereof, and the sealant comprises the following raw materials by weight: 80-90 parts of alpha, omega-dihydroxy polydiethylsiloxane; 4 to 8 parts of polyphenyl siloxane; 100 to 120 parts of spherical aluminum nitride; 3 to 7 parts of epoxy butyl oleate; 0.8 to 1.2 parts of organic bentonite; 0.5 to 0.9 part of a titanate coupling agent; 0.8 to 0.9 part of dibutyltin dibutyrate; 0.15 to 0.20 part of dibutyltin oxide; 0.08 to 0.15 part of phosphotriester; the titanate coupling agent, the tris (2, 3-dibromopropyl) phosphate and the graphite powder are introduced into the raw materials, the graphite powder is subjected to surface modification treatment in the pretreatment stage, and the modified graphite powder is more firmly combined with a sealing compound matrix, so that the sealing compound can still keep stable performance at an extreme temperature; by integrating the respective characteristics of the raw materials, the sealing compound finished product disclosed by the invention has the advantage of high heat-conducting property while having low viscosity.

The invention discloses a multi-parameter coupling monitoring and early warning method for identifying thermal runaway of a battery, which belongs to the technical field of battery safety monitoring, and has the advantages that the early warning accuracy is obviously improved, and the false alarm rate and the missing report rate are obviously reduced compared with the traditional single-parameter method through multi-parameter coupling analysis; compared with a traditional method, the early warning time is remarkably increased in advance, meanwhile, the recognition accuracy under different working conditions (such as extreme temperature, overcharge and overdischarge) is effectively improved, the robustness and the anti-jamming capability are enhanced, multi-dimensional parameter cross validation is adopted, the influence of environmental noise is effectively reduced, and through the redundancy design of the optical fiber sensing network, the recognition accuracy is greatly improved. Even if part of the sensors fail, the system can still work stably, so that within a certain temperature range value, the fluctuation of early warning accuracy is small, and the system has good suppression capability on external interferences such as electromagnetic interference and mechanical vibration.

The invention discloses a modern agricultural park comprehensive energy optimization scheduling method considering extreme temperature. According to the method, an extreme air temperature scene is determined based on a meteorological data set and an extreme air temperature event screening index, and energy supply and demand are predicted by using an energy supply-meteorological and agricultural load-meteorological coupling model. And constructing a weekly-ahead and day-ahead two-stage optimization scheduling model, and calculating an optimization scheduling result by using a commercial solver in combination with constraint conditions such as energy balance and the like. Meanwhile, adjustable resources such as a battery energy storage system and a demand response reservoir are considered, and the flexibility and stability of the system are improved. According to the method, the accuracy of source load prediction of the comprehensive energy system of the modern agricultural park at the extreme temperature is effectively improved, unbalanced cost deviation of different time scales is relieved, optimal scheduling of the comprehensive energy system of the agricultural park is achieved, stable supply of agricultural production energy is guaranteed, the energy utilization efficiency is improved, and the method has important application value.

The invention discloses a silicone rubber glass fiber hose and a preparation method thereof.The silicone rubber glass fiber hose comprises a glass fiber hose body and a silicone rubber coating wrapping the surface of the hose body, and the silicone rubber coating is formed by vulcanizing modified silicone rubber; the silicone rubber is prepared from the following components in parts by weight: 100-120 parts of raw methyl vinyl silicone rubber, 20-35 parts of white carbon black, 4-12 parts of raw high-ethylene silicone rubber, 2-6 parts of a vinyl silane coupling agent, 3-8 parts of a modifier, 0.01-1 part of an alkynol inhibitor and 1-3 parts of a platinum vulcanizing agent. The modified silicone rubber coating and the glass fiber base material work cooperatively better, the flame retardance, weather resistance and mechanical strength of the hose are greatly improved, the hose can keep excellent performance under the conditions of extreme temperature, severe environment and high stress, and the application range of the hose is remarkably widened.

The invention relates to a modified fly ash-based mining filling material and a preparation method thereof. The material comprises the following components: modified fly ash, lime, cement, gypsum, sodium sulfate, epoxy resin and the like. By using a composite modification system of the nitrogen-containing silane coupling agent, triethanolamine and organic acid, the dispersity of the fly ash is improved, and the fly ash is uniformly distributed in the slurry; lime, gypsum and sodium sulfate are used as excitants, so that the filling material keeps good strength and stability at high temperature, and the risk of structural damage caused by temperature rise is avoided; and meanwhile, the material cannot be excessively embrittled or the strength of the material is not reduced in a low-temperature environment. Besides, due to the excellent bonding performance of the added epoxy resin, the fly ash, the cement and other materials can be effectively glued into a filling body with certain strength and stability, the epoxy resin is also beneficial to reducing the internal stress and deformation of the cured materials, and the long-term stability of the filling body is ensured. The filling material disclosed by the invention is particularly suitable for mine filling and supporting operation, and can provide a reliable filling effect under an extreme temperature condition.

A system for testing rock fracture under a vacuum and extreme-temperature condition includes a vacuum extreme-temperature loading structure, an overall loading frame structure and a mobile cart. The vacuum extreme-temperature loading structure includes a vacuum transparent shield, a vacuum base and an extreme-temperature loading module. A bottom end of the vacuum transparent shield is covered on the vacuum base and is hermetically connected with the vacuum base to form a vacuum structure. The extreme-temperature loading module is provided inside the vacuum structure. The overall loading frame structure includes an overall frame and a loading cylinder. A middle of the overall frame is provided with a loading space, and the vacuum extreme-temperature loading structure is located in the loading space. The mobile cart is located in the loading space and is slidably connected with the overall frame, and the vacuum base is arranged on the mobile cart.

The invention discloses a production process of a new energy automobile power battery cooling liquid with wide temperature range performance, and belongs to the technical field of battery anti-freezing solutions, and the production process specifically comprises the following steps: (1) raw material selection and pretreatment; (2) mixing reaction; (3) filtering and purifying; (4) performance detection and adjustment; and (5) packaging and storing. The cooling liquid disclosed by the invention has excellent wide temperature range performance, and can meet the use requirements of a new energy automobile power battery under an extreme temperature condition. And through verification of a long-term cycle test and an accelerated aging test, it is ensured that the performance of the cooling liquid is stable in the long-term operation process. All the raw materials are strictly treated, and the additive is selected from a high-performance and low-toxicity chemical reagent, so that the environment-friendly requirement is met. The preparation process is simple and efficient, industrial production is easy to realize, and the preparation method has wide market application prospects.

The invention relates to the technical field of protective glue, in particular to extreme high and low temperature impact resistant UV (ultraviolet) photocuring electronic protective glue which is prepared from the following raw materials in parts by weight: 30-50 parts of synergistically modified epoxy-urethane acrylate oligomer, 20-35 parts of composite active monomer, 1.5-5 parts of composite photoinitiator and 10-20 parts of core-shell structure inorganic composite filler, 0.6 to 2.2 parts of a silane coupling agent, 0.12 to 1.1 parts of an antioxidant and 0.11 to 1 part of a leveling agent; the preparation method of the synergistically modified epoxy-urethane acrylate oligomer comprises the following steps: reacting resin acid modified epoxy resin with phosphoric acid di (hydroxyethyl acrylate) ester at 80-90 DEG C, and introducing a phosphate group to obtain a phosphate modified epoxy acrylate intermediate; the protection glue unifies rigidity, flexibility and flame retardance on the molecular level through the cooperation of the hybrid oligomer and the core-shell filler, realizes high heat conductivity, strong adhesion and extremely low internal stress, and has extreme temperature impact resistance, long-term damp-heat aging resistance and high-reliability protection performance.

The invention discloses a red up-conversion luminescent material, which belongs to the field of inorganic luminescent materials, the chemical formula of the material is NaEr < 0.65 > F4: Yb < 0.2 > / Gd < 0.1 > / Tm < 0.05 >, and up-conversion microparticles of the red up-conversion luminescent material are used as a bifunctional luminescent temperature sensor which can be used for a 293348 K low-temperature region sensitization sensor and a 348498 K high-temperature region thermal quenching sensor. After near-infrared light with the wavelength of 980 nm excites Yb < 3 + > ions, through efficient energy transfer between Er < 3 + > and Tm < 3 + >, different changes of near-infrared response type 654 nm and 808 nm red up-conversion luminescence characteristics can be used for non-contact optical temperature measurement under the extreme temperature condition. Temperature detection is realized based on thermal coupling energy levels of 4F9 / 2 to 4I15 / 2 and 3H4 to 3H6, and the distance between two emission peaks is large, so that the data processing error is greatly reduced; excitation light and emission light are located in an optical window of the biological tissue, and absorption and self-fluorescence of the biological tissue are greatly reduced. The preparation method is based on the green chemistry concept, takes water as a solvent and adopts a one-step hydrothermal method for synthesis, the preparation method is simple, the required temperature is low, the preparation process is easy to control, the material crystal phase is good, the phase is uniform, the yield is high, the material performance is stable, and the good temperature response effect is achieved.

The invention discloses a multifunctional geotechnical mechanical testing system for controlling temperature, humidity and salinity in an extreme environment, and relates to the technical field of ocean geotechnical engineering and geotechnical engineering. The system integrates a high-precision temperature and humidity and salinity control system, can accurately simulate the influence of complex environments such as extreme temperature and humidity, salt spray corrosion and the like on the mechanical properties of geotechnical materials, supports a direct shear test, a pull-out test, a soil body single-particle crushing test and a geosynthetic material stretching and puncturing test, can distinguish static, dynamic and long-term creep test modes, and can be used for testing the mechanical properties of the geotechnical materials. Comprising creep mechanical property testing under cyclic direct shear and continuous load. A visual monitoring assembly is additionally arranged, so that the microscopic deformation and damage process of the sample can be recorded in real time. Through multifunctional integration, temperature, humidity and salinity joint control, visual monitoring and dynamic and static coupling test devices, the technical bottlenecks of single function, environment simulation limitation and microcosmic observation deficiency of traditional equipment are solved, and high engineering application value and popularization potential are achieved.

The invention discloses a real module matching and database optimization method for designing a high-strength silicone oil shock absorber, and particularly relates to the technical field of data processing. By combining structural parameters and application conditions of the shock absorber, a preliminary mechanical simulation system integrated with the coupling model is established, a preliminary true module is formed, actual measurement damping data under multiple temperatures and multiple rates are obtained through a dynamic loading test, iterative correction is carried out through an advanced parameter optimization algorithm, high-precision true module matching is completed, and the actual measurement damping data are obtained. Real module parameters obtained through optimization under different design schemes and a corresponding damping performance index system are filed into a database, and data reliability and retrieval efficiency are continuously improved through database internal data quality evaluation and intelligent optimization; accurate prediction and efficient design of the damping performance of the silicone oil shock absorber under the extreme temperature and high-speed working conditions are achieved, and the design consistency, adaptability and engineering application reliability of the shock absorber are greatly improved.

The invention discloses an AI-based variable frequency heat pump control method and a control system thereof. The method comprises the following steps: S1, data acquisition; s2, data preprocessing; heat demand load prediction and operation parameter dynamic optimization are achieved through the AI model, the response speed of the environment temperature and heat demand changes is effectively increased, the parameter matching precision is effectively improved, the problems that traditional control response is lagged, and adaptability is poor are effectively solved, and the control accuracy is improved. The energy consumption of the system can be reduced under complex working conditions such as extreme temperature and sudden load change through a reinforcement learning algorithm, and the self-adaptive energy-saving capability of a multi-element scene is remarkably improved; meanwhile, based on a fault diagnosis scheme of a CNN and Transform fusion model, the fault diagnosis accuracy is effectively improved, the false alarm rate is effectively reduced, the defects of traditional threshold judgment are overcome, and in addition, the method can adapt to working condition changes and equipment aging characteristics for a long time in cooperation with model self-learning and parameter online updating functions.

The invention relates to the technical field of grouting simulation tests, and particularly discloses a pore medium grouting virtual-real cooperative test system and method considering the percolation effect, the system comprises a visual stratum simulation module, a temperature control module, a grouting module and a main control module, the main control module comprises a verification and optimization unit, and the verification and optimization unit comprises a verification and optimization unit. The equation building module is used for building a momentum equation, a continuity equation, a temperature continuity equation, a chemical reaction equation, a temperature-infiltration-time comprehensive viscosity equation and a slurry-water two-phase fraction equation according to data of a test system; numerical simulation results of the grouting speed, the grouting pressure, the slurry viscosity, the slurry temperature, the slurry concentration and the slurry diffusion form in the whole grouting process are obtained through coupling solution; and performing comparison verification on a numerical simulation result and a test result, and optimizing parameters of the pore stratum three-dimensional model. Extreme formation temperatures such as high temperature and low temperature can be simulated, so that the change and influence of a pore medium permeation mechanism under the extreme temperature condition can be researched.

The invention discloses a football high and low temperature aging detection device, and relates to the technical field of football detection, the football high and low temperature aging detection device comprises a bottom plate, the upper side of the bottom plate is fixedly connected with a detection box body and a fixing frame, the upper side of the bottom plate is provided with a detection unit, and the detection unit is used for simulating an impact and extreme temperature composite environment. A base is fixedly connected to the middle of the upper side of the bottom plate, a football body is arranged on the upper side of the base, a hydraulic cylinder is fixedly connected to the upper side of the fixing frame, and a pressing plate is fixedly connected to the output end of the lower side of the hydraulic cylinder. According to the football high and low temperature aging detection device, through cooperation of the bottom plate, the detection box body, the base and the pressing plate, a football can be stably limited, through linkage of a sliding hole, a movable plate, a connecting rod, impact blocks and a cam, the impact blocks on the left side and the right side are driven by a motor to repeatedly impact the football, and composite environment simulation of the impact effect and the extreme temperature is achieved; the detection condition is closer to the actual football use scene, and the authenticity of the detection result is improved.

The invention relates to the technical field of porous material preparation processes, in particular to a preparation method of light low-thermal-conductivity lutetium silicate aerogel, which comprises the following steps: preparing composite sol; preparing and aging wet gel; drying the gel; preparing the aerogel; the lutetium silicate aerogel is prepared by combining in-situ sol-gel with a supercritical drying process, and the lutetium silicate aerogel has relatively high porosity, can be in a light, crack-free and complete block shape, and can be used for near-net size forming; the method is simple to operate, can realize fluidized production, and is easy to industrialize; the lutetium silicate ceramic aerogel prepared by adopting an in-situ synthesis mode has higher porosity, better thermal stability and lower thermal conductivity, and can tolerate the extreme temperature of 1500 DEG C.

The invention relates to the technical field of motor monitoring, and particularly discloses an intelligent monitoring system based on a rare earth permanent magnet variable frequency motor. A surface-mounted rare earth permanent magnet synchronous motor adopts a surface-mounted design, the motor is embedded into a magnetic material, a rotor and a stator magnetic field operate synchronously during normal work, and a rotor winding has no induced current; rotor resistance and hysteresis loss do not exist, the efficiency of the motor is improved, and the permanent magnet variable frequency motor not only can reduce resistance loss, but also can effectively improve a power factor; magnetic stability analysis, operation simulation and temperature screening are integrated, a section temperature extreme point is excavated, a time sequence trend of the section temperature extreme point is tracked, a core heat source is accurately positioned, and a heat source area is divided according to a preset threshold value based on a triangular mesh, so that real-time identification and partitioning of the internal heat source of the motor are realized, the internal core heat source is accurately positioned, and overheating of a blind area is avoided; and in combination with the temperature-dependent demagnetization boundary, the magnetic safety margin is calculated in real time, early warning or load limiting is performed in time, and irreversible demagnetization is prevented.

The invention discloses a low-temperature-resistant bending-resistant cable for new energy, relates to the technical field of cables, and solves the problem of short service life of a cable caused by poor protection performance and durability of the cable for new energy in the prior art. Comprising an inner core structure, the inner core structure comprises a conductor layer, the conductor layer is composed of a plurality of conductors distributed in an array, and each conductor is wrapped by an insulating layer; the cable is characterized in that the outer part of the inner core structure is wrapped with a wrapping shielding layer; the outer sheath wraps the wrapping shielding layer, the outer sheath comprises a low-temperature-resistant layer, a buffer layer, a supporting layer and a reinforcing layer, the low-temperature-resistant layer wraps the lining layer, the buffer layer wraps the low-temperature-resistant layer, and the supporting layer wraps the buffer layer and is located on the inner side of the reinforcing layer; the cable is kept stable at extreme temperature, stress damage can be reduced, the cable is not hardened at low temperature and can be tightly attached to form sealing, and moisture resistance is improved.

The invention relates to the technical field of strength detection, in particular to a TPU particle strength detection device. The invention provides a TPU particle strength detection device capable of simulating an extreme environment and realizing dynamic pressure simulation, which comprises a rack, a hydraulic cylinder mounted in the rack, a piston part of the hydraulic cylinder fixedly connected with a lifting frame, a pressing frame slidably connected in the lifting frame, and an impact frame slidably connected on the pressing frame, and telescopic rods which are symmetrically distributed are fixedly connected to the pressing frame. According to the device, conventional testing is conducted on TPU particles through the hydraulic cylinder, the lifting frame, the pressing frame, the pressure sensor and the like, then dynamic pressure testing is simulated through the impact frame, then the compression condition of the TPU particles in the extreme environment is simulated through the cold air channel and the heating wire, and the device integrates conventional testing, dynamic testing and extreme temperature testing; the performance of the TPU particles under different conditions can be comprehensively evaluated, the tedious process of respective testing is avoided, and the testing efficiency is improved.

The invention discloses a gallium oxide solar-blind ultraviolet detector based on selective area etching and a preparation method thereof, and belongs to the technical field of semiconductor photoelectric detection. Comprises from bottom to top: a substrate; the first epitaxial layer is located on the substrate, and the first epitaxial layer is a highly doped n-Ga2O3 layer; the second epitaxial layer is located on the first epitaxial layer, and the second epitaxial layer is a lightly doped n-Ga2O3 layer; the third epitaxial layer is located on the second epitaxial layer, the third epitaxial layer is a highly-doped p-NiO layer, and the third epitaxial layer is distributed at intervals through selective area etching; and the first ohmic contact layer is located on the area where the third epitaxial layer is distributed at intervals. The detector adopts a PN junction structure working in a reverse bias state, and compared with a Schottky structure, the detector has the advantages that the built-in electric field intensity and the leakage current level of a device are less affected by high-energy photon irradiation and working environment temperature change, and the anti-irradiation performance of the device and the working capability under an extreme temperature condition are effectively improved.

The invention relates to the technical field of sealing rings, and discloses a wide-temperature-zone sealing ring which comprises a sealing ring body, the sealing ring body comprises a sealing layer, a thin film layer and a compensation layer, the outer portion of the thin film layer is arranged in the sealing layer, and the outer portion of the compensation layer is arranged in the thin film layer; the sealing layer and the thin film layer are supported by different materials and are made of fully-sealed elastic flexible materials, and the thickness of the thin film layer is smaller than that of the sealing layer; the compensation layer and the sealing layer are supported by different materials, and the linear expansion of the materials of the compensation layer and the sealing layer is opposite; the thickness of the compensation layer is inversely proportional to the thickness of the sealing layer according to the linear expansion coefficients of the two materials. The materials of the sealing layer and the compensation layer are selected, so that the compensation layer expands at low temperature to offset lost sealing pressure, the compensation layer shrinks at high temperature to buffer excessive extrusion, uniform contact stress of the sealing ring is maintained in extreme temperature fluctuation, and the effect of zero-damage self-adaptive sealing in the whole temperature range is achieved.

The invention discloses wide-temperature-range self-repairing gradient ceramic fire extinguishing foam, a preparation method and application of the foam in an electrochemical energy storage device, and belongs to the technical field of new energy battery safety. Aiming at the technical bottleneck of a traditional fire extinguishing material in coping with a thermal runaway fire disaster of an electrochemical energy storage device, the defects of an existing material in the aspects of extreme temperature adaptability, electrolyte compatibility and long-acting flame retardance are overcome through unique three-layer gradient structure design and material innovation; the technical bottlenecks of wide temperature range stability, an intelligent response mechanism and after-combustion blocking capacity are broken through, the ultra-wide temperature range structural stability from-50 DEG C to 1600 DEG C is achieved, millisecond-level response to different electrolytes is achieved, and a self-repairing barrier after fire extinguishment can be built. The innovation point is that the gradient ceramic structure design, the dynamic response mechanism and the self-repairing circulating system are adopted, so that the equal-depth fire reignition rate of the lithium battery can be obviously reduced, and the application prospect is wide.