31 results about "Thermal instability" patented technology

The invention discloses a triplex nested logic-based park energy storage and load cooperative scheduling method, system and device and a medium, and belongs to the technical field of intelligent power grid and energy storage operation control, and the method comprises the steps: obtaining park operation data, and generating first scheduling prediction information; generating an executable power candidate scheme based on the prediction information and the real-time operation data; action frequency constraint processing is executed, and an action recovery mechanism is established and verified; cooling window control is implemented, and the execution time, the power change amplitude and the power change sequence of actions are limited; and then comprehensive judgment is carried out, a final scheduling instruction is generated, and scheduling parameters are adaptively corrected according to execution feedback. Through triple nested logic, the number of times of start and stop, direction switching and power climbing can be limited in real time under the conditions of high-proportion new energy access and rapid load fluctuation, a cooling window is actively planned, the action sequence is optimized, and thermal instability and voltage impact caused by frequent charging and discharging or continuous high-power operation are avoided.

The invention relates to the field of automobile safety, and discloses a trailer axle intelligent temperature monitoring and intelligent fire extinguishing system which is characterized in that a temperature sensor is used for collecting axle operation temperature data in real time, whether local temperature rise rate abnormity is detected or not is judged, and a data analysis module is entered; performing multi-parameter fusion analysis on the temperature state flow, and calculating a temperature change gradient by adopting a sliding window algorithm; based on axle temperature distribution characteristics and historical working condition data, evaluating a thermal instability risk level, dynamically adjusting an alarm threshold value and a response strategy, judging whether the risk level reaches an early warning standard or not, and if yes, starting sound-light alarm and cockpit prompt; communication connection with the main control terminal is established through a vehicle-mounted bus, whether an emergency fire extinguishing instruction is received or not is judged, and if yes, the instruction is synchronously transmitted to the fire extinguishing execution module; the spraying area and the spraying intensity are automatically selected according to an emergency fire extinguishing instruction issued by the communication management module. The method has the advantage that the operation safety of the trailer is improved.

This invention discloses a dynamic temperature rise diagnosis and alarm method for high-voltage switchgear, comprising: collecting operating status data of thermal response structural nodes and constructing a multi-measurement point time-series data sequence; constructing a node association structure based on the multi-measurement point time-series data sequence to form a thermal potential constraint inversion map; constructing an improved SOFTS model that integrates thermal potential constraint weights and outputting baseline prediction and collaborative embedding vectors; stripping normal temperature rise components based on the difference between baseline prediction and actual measurement, and extracting abnormal temperature rise components to determine the number of fault embryos; constructing local candidate regions to extract thermal evolution coupling features, generating local thermal instability judgment indicators, and identifying abnormal temperature rise self-activation threshold kernels; generating dynamic temperature rise diagnosis results and outputting corresponding alarm information based on the execution mechanism and evolution judgment of abnormal temperature rise self-activation threshold kernels. This invention achieves early and accurate diagnosis and forward alarm of abnormal temperature rise in high-voltage switchgear through thermal potential constraint modeling and improved SOFTS fusion analysis.

The utility model discloses a heating device for an axial non-uniform thermal destructive test of a nuclear fuel rod cladding, which is characterized by comprising an inner sleeve and an outer sleeve which are matched with the cladding in length and are coaxially arranged, the inner diameter of the inner sleeve is larger than that of the cladding, and the inner sleeve is inserted and connected during the test; a spiral electric heating wire is arranged at the middle position in a cavity between the inner sleeve and the outer sleeve and wound around the inner sleeve, the spiral electric heating wire is at least composed of two sections with different heating power specifications in the axial direction, and the two ends of the spiral electric heating wire are each connected with an armored cable. The outer ends of the two armored cables penetrate out of the circumferential surfaces, close to the two ends, of the outer sleeve and are connected with positive and negative electrode leads, and a cavity between the inner sleeve and the outer sleeve is further filled with an insulating material in a sealed mode. According to the utility model, the thermal instability of nuclear reaction during the working of the cladding can be better simulated to detect the thermal destruction performance of the cladding, and the quality safety of products can be better ensured.

The utility model discloses a heating device for a circumferential non-uniform thermal destructive test of a nuclear fuel rod cladding, which is characterized by comprising an inner heating tube with the length matched with that of the cladding, a connector is arranged at the incoming end of the inner heating tube, and a plug is arranged at the outgoing end of the inner heating tube. Two linear electric heating wires which are arranged in the axial direction are arranged in the middle position in the inner heating tube in parallel at intervals in the diameter direction, and the two linear electric heating wires are the same in length but different in heating power specification. According to the utility model, the thermal instability of nuclear reaction during the working of the cladding can be better simulated to detect the thermal destruction performance of the cladding, and the quality safety of products can be better ensured.

This invention discloses an encapsulation and molding technology for inorganic solid-liquid phase change materials. It enhances the photothermal conversion capability of inorganic hydrated salts through a two-stage encapsulation and molding process using a porous support material at the micro-pore stage, followed by shaping and a two-stage macro-encapsulation and molding process using commercial sealant and carbon materials. This two-stage encapsulation method plays a crucial role in maintaining the shape stability of the inorganic hydrated salt phase change material, resulting in a composite phase change material with a certain photothermal conversion capability. This multi-stage encapsulation and molding method is very simple, using low-cost porous matrix and commercial adhesives. It is highly effective in solving the problems of liquid leakage and thermal instability in inorganic hydrated salt phase change materials and can be extended to the multi-stage encapsulation and molding of other inorganic hydrated salt phase change materials. This simple, inexpensive, and efficient method will facilitate the application of inorganic hydrated salt phase change materials in practical applications.

The application discloses a welding positioning tool applied to sheet metal parts of engineering machinery, and belongs to the technical field of welding, which comprises a measurement comparison module, a prediction and distribution clamping force module, a clamping execution mechanism, a load sensor and a cooperative compensation controller. The tool extracts the spatial posture deviation and the non-rigid deformation force characteristics of the workpiece, combines the thermal expansion and material phase change characteristics, calculates and dynamically distributes the clamping force for constraining the thermal instability of the workpiece. During the welding process, the load sensor is used to monitor the load fluctuation of each clamping point in real time, the cooperative compensation controller synchronously adjusts the output force of the clamping mechanism according to the load fluctuation, and the spatial motion posture of the welding end is corrected, so that the thermal deformation displacement of the workpiece is effectively offset.

The invention discloses a spacecraft heat balance dynamic simulation evaluation method, and particularly relates to the technical field of spacecraft heat balance. Constructing a spacecraft kinematics model with an expandable structure and a thermal network model; establishing a thermal-structure-motion multi-field coupling interface, and realizing dynamic driving of a structure deployment state on thermal connection parameters; in the joint simulation process, the thermal coupling matrix is updated in real time, so that the thermal connection state continuously changes along with structure deployment; key thermal node temperature sequence data are recorded, thermal response characteristics of the key thermal node temperature sequence data in the whole deployment process are evaluated, and the problems of temperature anomaly and thermal instability are identified; reversely positioning a potential thermal control defect area and a deployment strategy risk point by combining the deployment state and the thermal connection state change, and outputting a thermal response map and a design optimization suggestion; according to the method, the accuracy and responsiveness of thermal simulation in the structure deployment process are improved, thermal connection dynamic modeling and risk diagnosis in the deployment process are achieved, and the method is suitable for thermal control design and thermal safety evaluation of the spacecraft with the deployable structure.

The present invention pertains to a polytetrafluoroethylene resin powder that can be used as a binder for a secondary battery, said polytetrafluoroethylene resin powder having an ethanol penetration rate coefficient, as measured by the Lucas-Washburn method, of 0.015 g2 / s and a thermal instability index of 34 or lower.

The invention discloses an application method, system, equipment and medium of a 10 kV bypass cable adapter universal structure box, and relates to the technical field of intelligent access of a power distribution network, and the method comprises the steps: collecting cable structure data and operation parameters, and constructing a cable feature object; performing finite element calculation based on the cable feature object to generate a design scheme of a joint and terminal structure; inputting the design scheme of the joint and the terminal structure into an adaptive matching engine, generating an optimal access configuration and forming an execution control instruction; executing load balancing control based on the real-time operation data and generating a load balancing control vector; and performing short-time overload risk prediction based on the prediction model and generating a short-time overload protection instruction. By introducing a design feature-performance result contrast database and an adaptive optimization mechanism, an access structure can synchronously reach the optimum on the electric field peak value and the temperature rise index, so that the risks of cable local electric field concentration and short-time thermal instability are reduced.

This utility model relates to a cable conduit burial structure in the field of cable conduit laying. It includes two sets of positioning pipes respectively fitted onto both ends of the cable conduit. Each positioning pipe includes two mounting pipes symmetrically distributed and fixedly connected by bolts. A sealing ring is fixedly connected inside each mounting pipe, and an insert pipe is fixedly connected to the outer surface of each mounting pipe. A collection hopper is fixedly connected to the end of the insert pipe furthest from the mounting pipe, and a filter screen is fixedly connected inside the collection hopper. Two irrigation components are provided between the two sets of positioning pipes. Rainwater is collected during rainy weather via the collection hopper and insert pipe, allowing it to be stored in the mounting pipes and the collection pipe. When the soil around the cable conduit is relatively dry, the collected rainwater can be used for drip irrigation of the surrounding soil, effectively increasing soil moisture, preventing soil thermal instability, and improving the power supply reliability of the power system.

The invention discloses a functional regulation type thermal shock resistant and alkali resistant castable based on silica sol cooperating with aluminum titanate and a preparation method and application thereof. The castable is prepared from 50 to 60 percent of mullite, 10 to 13 percent of silicon carbide, 8 to 10 percent of andalusite micro powder, 0.5 to 1.5 percent of boron nitride nanosheet, 1 to 3 percent of rare earth oxide, 10 to 14 percent of silica sol (dry basis), 8 to 12 percent of function regulator (containing metakaolin and aluminum titanate) and 0.1 to 0.3 percent of dispersing agent. The invention breaks through the technical prejudice of thermal instability of aluminum titanate, realizes multiphase synergistic enhancement, and is suitable for high damage areas such as kiln mouths of rotary cement kilns, coal injection ducts and the like.

This invention discloses a method and apparatus for measuring test conditions of semiconductor devices, relating to the field of semiconductor device testing technology. Addressing problems such as understress testing, overstress failure, and fatigue failure in existing technologies, it employs a measurement device capable of independently powering the main circuit and control circuit of the device under test (DUT) and outputting electrical stress over a wide range. Test conditions are accurately extracted by characterizing the thermal properties of the DUT in the same heat flow mode as the specified test items. This avoids interference between the main circuit and control circuit, bypasses the thermal instability electrical stress range of the DUT, and prevents thermal instability failure, thus improving stability and accuracy. It effectively avoids understress testing, overstress failure, and fatigue failure, improving the reliability of semiconductor devices.

The present application relates to the technical field of numerical control system control, in particular to a kind of intelligent compensation method for thermal error of numerical control system based on multi-source temperature perception.The method trains two prediction models according to the collected data respectively.The predicted instantaneous temperature residual output by loss temperature residual prediction model can ensure reference while not causing control lag problem;Machine tool background temperature prediction model is a low-frequency model with one sampling period as time unit, and planned energy injection and open-loop thermal instability degree are taken as driving features of machine tool heat source physical properties in sampling period to predict predicted machine tool background temperature in future period.According to the prediction results of the two models, the laser power and machine tool feed rate can be compensated and controlled.The present application avoids the technical problems of transient overheating control lag and not considering strong heat source in load increasing process by effective training and application of two prediction models.

The present application relates to the technical field of computer-aided monitoring and simulation, in particular to a kind of thermal imaging monitoring system based on digital twinning, including perception and edge computing module, for obtaining temperature matrix from thermal imaging sensor, and temperature matrix is calculated to obtain regional level thermal instability index;It is also used to determine the risk level corresponding to the regional level thermal instability index, and generate thermal anomaly feature vector when the risk level is greater than the preset normal level;Twinning platform rapid response module is used to receive thermal anomaly feature vector, and locate virtual assets in digital twinning scene according to thermal anomaly feature vector, then according to the risk level in thermal anomaly feature vector, execute hierarchical response decision to virtual assets, the response mode of the present application surpasses the traditional lagging alarm, and changes into a kind of autonomous safety guarantee ability with foresight and immediacy.

This invention discloses a method, system, equipment, and medium for coordinated scheduling of energy storage and load in a park using a triple-nested logic, belonging to the field of smart grid and energy storage operation control technology. The method includes: acquiring park operation data and generating first scheduling prediction information; generating executable power candidate schemes based on the prediction information and real-time operation data; performing action frequency constraint processing, establishing an action recovery mechanism, and verifying it; implementing cooling window control, limiting the execution time, power change amplitude, and sequence of actions; and then performing comprehensive judgment to generate the final scheduling command, and adaptively correcting the scheduling parameters based on execution feedback. This invention, through triple-nested logic, can limit the number of start-stop cycles, direction switching, and power ramp-up cycles in real time under conditions of high-proportion renewable energy access and rapid load fluctuations, actively plan cooling windows, and optimize action sequences, avoiding thermal instability and voltage surges caused by frequent charging and discharging or continuous high-power operation.

This application belongs to the field of space electric propulsion, specifically relating to a heating method for a propellantless cathode. The method employs constant-pressure and constant-power modes to heat the propellantless cathode, dividing the heating process into multiple stages. The heating voltage is calculated based on the desired power for each stage, and heating is carried out for a corresponding period. After completing the multi-stage constant-pressure heating, the method switches to constant-power heating mode, adjusting the propellantless cathode heating voltage to equal the set rated heating power. This method effectively reduces the thermal instability of the propellantless cathode heating and enhances its performance. In constant-power heating mode, because the input heating power remains constant, the temperature of the propellantless cathode eventually stabilizes over time due to the zeroth law of thermodynamics, i.e., the law of thermal equilibrium, thereby reducing thermal instability and noise caused by the thermal performance of the propellantless cathode.

The invention discloses a thermal instability early warning method for a high-voltage fuse, and relates to the technical field of fault early warning of high-voltage power equipment, and the method comprises the steps: carrying out the real-time sensing of the high-voltage fuse, and constructing a thermal state feature vector through feature analysis; building two channels containing thermal instability prediction and early warning sub-branches; synchronizing the feature vector to a prediction sub-branch to calculate and generate a thermal instability risk index, and transmitting the index to an early warning sub-branch to generate a thermal instability initial early warning signal; and finally, the initial signal is sent to a central control end for inversion tracking verification, a thermal instability initial early warning signal is updated according to a signal verification result, a final thermal instability early warning signal is formed, linkage response is executed, and accurate early warning control is realized. The technical problems that in a traditional early warning method, the monitoring data dimension is single, and evaluation is lack of accuracy and dynamic adaptability are solved, and the technical effects that reliable early warning and efficient management and control of the equipment thermal instability risk are achieved, and operation safety of key equipment of an intelligent power grid is guaranteed are achieved.

The application relates to a transformer rapid explosion suppression and fire prevention method, and belongs to the technical field of power equipment safety, which specifically comprises the following steps: S1, collecting multi-physical field data in real time through a sensor network arranged in the transformer; S2, determining an electric-thermal instability index, a fractal dimension of a fire core growth, a maximum eigenvalue of an irradiance Hessian matrix, and a spectral coherence length decay rate based on the multi-physical field data; S3, combining the electric-thermal instability index, the fractal dimension of the fire core growth, the maximum eigenvalue, and the spectral coherence length decay rate to construct a feature vector; and S4, identifying a preliminary fault state based on the feature vector, correcting the preliminary fault state by using a preset physical model to obtain a final fault state, and triggering a hierarchical response strategy according to the final fault state. The application solves the problem that a single signal source is prone to failure under the interference of a complex electromagnetic and thermal environment, and provides a solid data foundation for subsequent accurate diagnosis.

The application relates to an atomic dispersion non-noble metal catalyst based on a defect ligand and a preparation method and application thereof, and relates to an atomic dispersion non-noble metal catalyst and a preparation method and application thereof. The application aims to solve the technical problem of low catalytic activity of existing single-atom transition metal carbon-based catalysts, and the catalyst is composed of MN4 embedded in a carbon carrier, wherein M is coordinated with N in two different M-N bond lengths, and a 2N t =M=2N c coordination structure is formed. The preparation method is as follows: a three-dimensional nitrogen-doped porous defect type flower-shaped carbon carrier is prepared by utilizing the thermal instability of a defect ligand, then a catalyst is obtained by impregnation adsorption and heat treatment. The carbon carrier of the catalyst has a hierarchical porous structure of micropores and mesopores, the catalyst has asymmetric sites, and the maximum power density of a fuel cell assembled by using the catalyst as a cathode reaches 862 mW cm ‑2 , and the catalyst can be applied to the fields of proton exchange membrane fuel cells and metal air batteries.

The invention discloses a control method for a high-temperature superconducting magnet, and belongs to the technical field of superconducting energy storage control, and the method comprises the steps: obtaining a measurement voltage, a measurement current and a plan power value sequence of the high-temperature superconducting magnet; based on the measured voltage, the measured current and the electromagnetic dynamic model, internal state variables are obtained, and the internal state variables comprise dynamic resistance capable of reflecting superconducting performance changes; inputting the planned power value sequence and the internal state variable into a magnet state prediction model to generate an internal state variable prediction sequence and a current prediction sequence; judging whether a quench risk or a thermal instability risk exists or not; when the risk exists, adjusting the plan power value sequence to obtain an optimized power value sequence, and taking the optimized power value sequence as a target power value sequence; and if no risk exists, taking the planned power value sequence as a target power value sequence. And controlling according to the target power value sequence. According to the invention, the problem that the control of the high-temperature superconducting magnet is not accurate enough in the prior art is solved.

According to the semiconductor device with the metal silicide and the manufacturing method of the semiconductor device, on the premise that the feature size and other performance of the device are not affected, the forming area and the line width of the metal silicide on the substrate on the outer side of the gate structure are enlarged by conducting side digging on part of the bottom of the side wall on the side wall of the gate structure, and the semiconductor device with the metal silicide is obtained. Therefore, smaller metal silicide resistance can be obtained, the influence of the line width effect of the metal silicide is weakened, further miniaturization of the size of a semiconductor device is facilitated, and for some products needing a high-temperature process in a back-end process (such as a metal interconnection process), the production cost is reduced. The invention provides a new thought and scheme in the aspect of avoiding thermal instability and line width effect of the metal silicide.

The present application relates to the technical field of tire rubber performance prediction, and particularly relates to a tread rubber thermal instability wear amplification and crack propagation risk assessment method and system. The method collects the tread surface temperature curve under high slip conditions, calculates the temperature rise rate, and combines the high slip friction relative coefficient across the temperature zone, the energy normalized wear coefficient, and the crack propagation rate under the high temperature reference tear energy to construct a coupling risk index, thereby realizing comprehensive evaluation, graded early warning, and dominant failure cause of the tread rubber thermal instability wear amplification and crack propagation risk. The present application can quickly identify the potential abnormal wear and crack propagation risk of the new energy vehicle tire tread rubber under high torque acceleration, braking, and congestion conditions in a short period in the laboratory, and is suitable for formula screening, material substitution, mass production change verification, and failure analysis.

The invention relates to a method and a device for generating an integrated start key single soliton microcavity optical frequency comb based on a double-loop coupling system. Comprising a monolithic integrated III-V group pumping laser chip, a silicon-based CMOS process integrated double-coupling optical microcavity chip, a temperature control unit, a driving control unit, a light beam splitter, a detection unit, a photoelectric detector and a feedback control unit. According to the scheme, blue detuning of the single soliton microcavity optical frequency comb is realized through double-coupling microcavity tuning local dispersion. The invention provides a technical scheme of an integrated start key single soliton microcavity optical frequency comb. The problems of thermal instability, dependence on a high-quality factor micro-ring resonant cavity and relatively low output power of the single soliton micro-cavity optical frequency comb due to the fact that pump laser needs to be locked in micro-cavity red detuning when the single soliton micro-cavity optical frequency comb is generated in a single-cavity system are solved, and the system stability and reliability of the single soliton micro-cavity optical frequency comb are improved. According to the scheme, a feasible path is provided for engineering application of the microcavity optical frequency comb in the fields of communication, sensing and the like.

The application discloses a growth method for reducing pit defects on a silicon carbide epitaxial surface, and after epitaxial growth is completed, the flow of gas floating of a base is increased, the temperature in a reaction chamber is increased, the pressure in the reaction chamber is reduced, and the flow of hydrogen is increased, and then an etching stage is entered; in the etching stage, hydrogen chloride gas is continuously fed, including at least one feeding period and a pause period after the feeding period; by using the thermal instability of SiC at high temperature / low pressure, H2 / HCl is used to cooperatively etch the system to realize efficient decomposition, the etching rate is increased, the generation of sub-damage and dislocation is reduced, the thickness of the removed epitaxial layer can be accurately controlled, the pit defects on the surface of the epitaxial layer are reduced, and the crystallization quality of the epitaxial layer is maintained, so that the preparation requirements of subsequent power devices are met.

The application discloses a functional adjustment type heat shock resistant alkali resistant castable based on silica sol and aluminum titanate and a preparation method and application thereof. The castable comprises 50-60% mullite, 10-13% silicon carbide, 8-10% micro powder of microcline, 0.5-1.5% boron nitride nanosheet, 1-3% rare earth oxide, 10-14% silica sol (dry base), 8-12% functional regulator (containing metakaolin and aluminum titanate) and 0.1-0.3% dispersant. The application breaks through the technical prejudice of "thermal instability" of aluminum titanate, realizes multiphase synergistic reinforcement, and is suitable for high damage areas such as a cement rotary kiln mouth and a coal injection pipe.

This application discloses a high-power piezoelectric ceramic, its preparation method, and its applications, relating to the field of piezoelectric ceramic technology. The high-power piezoelectric ceramic provided in this application achieves advantages such as synergistic control of soft and hard properties, dense and uniform microstructure, and low loss and high stability under strong fields. Simultaneously, it avoids the problems of traditional technologies, such as the mutual constraint between piezoelectric activity and mechanical quality factor, insufficient powder activity leading to poor sintering densification, and thermal instability and rapid performance degradation under strong fields. It can adapt to the application requirements of various fields for high electromechanical conversion efficiency, low energy dissipation, high service reliability, and long-term stable operation under extreme conditions.

The application relates to a 200G PSM8 optical module MT-FA protection device and method, which is suitable for the application scene of connecting MT-FA optical fiber short jumpers of high-speed optical modules with multi-channel parallel output; wherein the device comprises a modeling unit, a confirmation unit, a regulation and control unit, a determination unit and an execution unit; the modeling unit constructs a channel stability evaluation tensor which integrates temperature, current, voltage and optical power parameters; the confirmation unit extracts a channel response sensitivity difference based on a periodic perturbation, and judges a thermal instability approaching state; the regulation and control unit generates a predicted driving inhibition curve to segmentally back off a driving current accordingly; the determination unit generates a data packet containing a light-out instruction and fault reporting according to a thermal response delay and heat recovery condition; and the execution unit is responsible for the specific implementation of the protection instruction set; the application can realize real-time identification and dynamic protection of the thermal instability risk of a high-speed optical channel, and improves the operation safety and reliability of the optical module.

The invention discloses a preparation method of a nanoscale sulfide solid electrolyte, and belongs to the technical field of all-solid electrolyte material preparation. Through a low-temperature freezing wet ball-milling process, long-time continuous particle refinement of the sulfide electrolyte is realized under a continuous low-temperature condition, a thermal instability reaction in a continuous ball-milling process is effectively prevented, the chemical structure of the electrolyte is kept stable, and meanwhile, the particle size of the sulfide electrolyte is remarkably reduced to nanoscale; the interface contact and compactness of the electrolyte are enhanced, and excellent ionic conductivity (up to 10 <-3 > S.cm <-1 > level) is still kept. In addition, the preparation method provided by the invention is simple in process, can be used for large-scale production, and is suitable for all sulfide electrolyte systems.

The utility model relates to a heat supply system based on waste heat recovery of a data center, relates to the technical field of waste heat recovery, and is used for solving the problems of low waste heat recovery utilization rate, unstable long-distance heat supply and low cost performance of the data center in the prior art. The utility model discloses a heat supply system based on data center waste heat recovery. The heat supply system comprises a waste heat recovery heat exchanger, a heat pump unit, a water path conversion valve, a circulating pump and a cross-seasonal heat storage device. The water path conversion valve comprises a first two-way valve, a second two-way valve, a third two-way valve, a fourth two-way valve, a fifth two-way valve and a sixth two-way valve. According to the utility model, the waste heat of the data center can be conveniently utilized for regional heat supply or remote heat supply, and the waste heat recovery utilization rate is improved.