177 results about "Operation temperature" patented technology

The invention relates to the field of crude oil heating, in particular to a full-automatic electric heating system and device based on the integrated heat storage technology, and the system comprises a temperature scale module, a heating module and a heat storage module. The heating module is provided with all temperature control nodes of the oil gathering pipeline, target temperature difference compensation, pipe section heat loss compensation and a flow velocity correction factor are integrated, and adaptive electric heating power of all the temperature control nodes of the oil gathering pipeline is generated through a reverse cascade feedback control algorithm. The heat storage module continuously collects temperature field characteristics, operation condition characteristics and medium thermal attributes of the oil gathering pipeline, judges whether heat storage operation is triggered or not through multi-dimensional coupling evaluation, distributes heat storage media through a priority algorithm, drives a valve to switch and execute adaptive heat storage operation, and achieves precise temperature field regulation and control and energy efficiency optimization of the oil gathering pipeline. And stable crude oil transportation is guaranteed.

The invention relates to the technical field of gas bearings, in particular to a refrigerant foil dynamic pressure gas radial bearing capacity estimation method and system.The method comprises the steps that the working temperature, the working pressure, the bearing diameter and the rotating speed when a bearing works are obtained, and a refrigerant medium is determined; obtaining the dynamic viscosity of the refrigerant according to the working temperature, the working pressure and the refrigerant medium; according to the bearing diameter, the rotating speed, the refrigerant dynamic viscosity and the main structure parameters of the bearing, a bearing capacity estimation formula of the bearing is constructed; performing iterative optimization on the main structure parameters of the bearing according to a bearing capacity estimation formula of the bearing to obtain optimal structure parameters; the main structure parameters of the bearing subjected to iterative optimization comprise the bearing length, the bearing nominal clearance and the eccentricity rate. According to the method, the bearing capacity of the bearing is estimated by selecting different bearing lengths, bearing nominal clearances and eccentricity ratio combinations, so that main structural parameters of the bearing are designed, the bearing capacity of the bearing meets the requirements, and the running eccentricity ratio is within a reasonable range.

The invention relates to the technical field of coal washing equipment, in particular to a lifting type peripheral transmission rake thickener operation system for coal washing, which comprises a working condition sensing module used for collecting slime water concentration, rake frame torque, slag layer thickness and equipment operation temperature data; the intelligent decision-making module is used for constructing a slime water sedimentation prediction model through an LSTM-GRU hybrid algorithm according to the data, and generating an equipment operation regulation and control instruction; the lifting transmission regulation and control module is used for adjusting the vertical height of a rake frame according to a regulation and control instruction to adapt to different slag layer thickness treatment requirements, and meanwhile, combining real-time feedback of the torque of the rake frame, dynamically adjusting the rotating speed of a peripheral transmission motor and optimizing coal slime and water separation conditions; and the safety early warning module is used for monitoring parameter mutation through a sliding window algorithm, and triggering corresponding strategies of different levels when the harrow torque and the slime water concentration exceed multiple groups of adaptability thresholds. Therefore, the problems that in the prior art, the height of the rake frame is fixed, regulation and control depend on manpower, and an early warning mechanism is extensive are solved.

A system that reduces the amount of contaminants that enters a process chamber or air bearing via a movable shaft is disclosed. The movable shaft includes an outer shell made from a material having a low coefficient of thermal expansion. This allows the outer shell to be heated to sufficiently high temperatures to avoid condensation of contaminants on the shaft, while minimizing any change in the diameter of the shaft, which passes through an air bearing. The shaft may also have a temperature modification device disposed adjacent to the interior surface of the outer shell. In some embodiment, the shaft may include an inner liner. An insulative layer may be provided between the inner liner and the outer shell, such that the temperature of the outer shell does not cause the inner liner to thermally expand.

The embodiment of the invention provides a commercial vehicle transmission shaft maintenance monitoring method, device and equipment and a vehicle, and the method comprises the steps: monitoring the working temperature of an intermediate support of a commercial vehicle transmission shaft, and determining the working condition of the intermediate support of the transmission shaft; accumulating the duration of the transmission shaft intermediate support under various working conditions; determining the consumption life of the transmission shaft intermediate support according to the duration time under various working conditions and the corresponding life influence coefficient; determining the residual service life of the transmission shaft intermediate support according to the rated service life and the consumption service life of the transmission shaft intermediate support; and generating maintenance alarm information according to the residual service life of the transmission shaft intermediate support and a preset minimum reminding threshold value. By utilizing the method, the working state of the transmission shaft intermediate support can be monitored in real time, the residual life can be accurately calculated according to the actual working condition, the replacement reminding can be timely sent out, and the problems of unreasonable maintenance period and inaccurate state monitoring in the prior art are solved.

A method of operating a HVAC system is provided. The method includes removing heat from a working fluid using an evaporator and a blower that moves airflow across the evaporator. The method includes measuring at least one gas property value of a fluid surrounding the evaporator using a leak detection sensor. The method includes determining a control setpoint for a maximum allowable concentration of working fluid in the fluid surrounding the evaporator, where the control setpoint corresponds to a gas property value associated with a threshold percentage of a lower flammability limit of the first refrigerant in air at the operating temperature. The method includes determining that the at least one gas property value of the working fluid exceeds the control setpoint. If exceeded, the method includes closing a value that regulates the flow of working fluid to the evaporator and initiating the blower to move airflow across the evaporator.

A soil processing machine, in particular a soil compactor, comprises a machine frame and a casing (26, 28) carried on the machine frame and / or at least partially providing it and bounding a unit receptacle space (24), wherein the casing (26, 28) has a cooling air inlet area (30) and a cooling air outlet area (32) for cooling air flowing through the unit receptacle space (24), wherein a plurality of units around which cooling air can flow through the unit receptacle space (24) from the cooling air inlet area (30) to the cooling air outlet area (32) are arranged in the unit receptacle space (24), wherein at least two of the units arranged in the unit receptacle space (24) have maximum permissible operating temperatures different from one another and at least one unit having higher maximum permissible operating temperature is arranged upstream in a cooling air flow direction from the cooling air inlet area (30) to the cooling air outlet area (32) with respect to at least one unit having lower maximum permissible operating temperature.

The invention relates to the technical field of clutches, and discloses a clutch service life evaluation method and device, a vehicle and a medium, and the clutch service life evaluation method comprises the following steps: establishing a relation curve of a clutch friction material at different working temperatures and the working duration of reaching a set abrasion loss, and performing segmented regression analysis on the relation curve in combination with a set reference temperature; the accuracy of the segmented regression equation near the reference temperature is guaranteed, and then a clutch service life evaluation model with the working time and the working temperature of the clutch as variables is constructed through the segmented regression equation, so that clutch service life evaluation is conducted through the real relation between the working temperature of the friction material and the working duration. According to the method, the accuracy of the evaluation result of the service life of the clutch is guaranteed, unified real-time quantifiable fine evaluation on the service life of the clutch is realized, the wear trend and the health decline state of the clutch friction plate in long-term use can be reflected more accurately, and accurate maintenance suggestions and vehicle use suggestions are conveniently provided for users.

The invention provides a charging pile cooling system and a control method thereof, and belongs to the technical field of charging piles.The charging pile cooling system comprises a cooling liquid pump, a cooling liquid pump inlet pipeline and a cooling liquid pump outlet pipeline, and the cooling liquid pump outlet pipeline is installed between the water outlet end of the cooling liquid pump and a charging gun; the cooling liquid pump inlet pipeline is installed between the charging gun and the water inlet end of the cooling liquid pump. The charging pile cooling system further comprises an air temperature sampling sensor, a gun temperature sampling sensor, a cooling liquid pump inlet sampling sensor, a cooling liquid pump outlet sampling sensor, a cooling fan, a charging control module and a power module. The operation states of the cooling liquid pump and the fan of the charging pile can be dynamically adjusted, quicker and more accurate temperature regulation and control are realized, and the working temperature of the high-charging-power liquid-cooling direct-current charging pile is effectively reduced.

A fuel cell system is introduced. The fuel cell system may comprise a fuel cell stack, and a controller configured to determine a dew point of gas flowing in the fuel cell stack, determine, based on the determined dew point and an operating temperature of the fuel cell stack, a change rate of an amount of hydrogen crossover, and control, based on a target operating temperature, the operating temperature of the fuel cell stack, wherein the target operating temperature is changed based on the determined change rate.

The utility model relates to a lubricating oil filter bypass sensor tester, which comprises a box body, an operation panel is arranged on the box body, a power supply, a test adapter, a temperature unit and a pressure unit are arranged in the box body, the operation panel is provided with a test interface, a temperature regulation panel and a pressure regulation knob, the temperature unit comprises a temperature platform, and the pressure unit comprises a gas source and a temperature platform. The test interface is arranged at the bottom of the box body, the test adapter is fixedly arranged above the test interface and is respectively connected with the power supply and the temperature regulation panel, the air source is fixed at the bottom of the box body and is respectively connected with the test adapter and the pressure regulation knob, and an input port of the test adapter is arranged in the test interface and is connected with a to-be-tested lubricating oil filter bypass sensor through the test interface; the temperature adjusting panel is used for setting the temperature of the temperature platform, the pressure adjusting knob is used for adjusting the output pressure of the air source, the output pressure is presented in the form of a portable function test box, the actual working temperature and the environment pressure of the sensor can be accurately simulated, and the test safety and accuracy are improved.

A method (200) for controlling the temperature of recirculated exhaust gas in an internal combustion engine, comprising: Operating (202) the internal combustion engine (10) in a baseline mode; Receiving (204) a signal indicating the operating temperature of a motor; (206) comparing the engine operating temperature with a predetermined IEGR threshold; if the engine operating temperature is lower than the predetermined IEGR threshold, (210) activating an IEGR mode in which internal exhaust gas recirculation is present, and activating an EEVO mode, which is an operating mode of the internal combustion engine in which exhaust valve timing is changed compared to an initial operating mode; and If the engine operating temperature is higher than the first preset IEGR threshold, the IEGR mode is deactivated and the EEVO mode is deactivated. wherein the baseline mode includes activating a primary exhaust valve opening during an exhaust event of the associated cylinder of the exhaust valve, wherein the IEGR modes include activating a secondary exhaust valve opening during an intake event of the associated cylinder of the exhaust valve and partially holding the exhaust valve (64) open between the primary exhaust valve opening and the secondary exhaust valve opening, wherein the exhaust valve (64) is fully open during the primary exhaust valve opening and the exhaust valve has less than 40% of its full opening during the secondary exhaust valve opening, including the EEVO modes: Activating the primary exhaust valve opening prior to the primary exhaust valve opening of the baseline; holding the exhaust valve fully open (64); and Closing the outlet valve (64) according to the baseline mode.

The invention discloses an indoor unit protection method and device of a multi-split air conditioner, the air conditioner and a medium, the air conditioner comprises a target indoor unit and a target outdoor unit, the target indoor unit and the target outdoor unit are connected through a pipeline, and the target indoor unit cannot communicate with the target outdoor unit. The method comprises the steps that the current operation temperature of a target indoor unit is predicted based on a target pressure value collected by a pressure sensor, and the pressure sensor is arranged on a pipeline between an air pipe of a target outdoor unit and a four-way valve; a target preset temperature range where the current operating temperature is located is determined from a plurality of preset temperature ranges, and indoor unit states corresponding to different target preset temperature ranges are different; and based on a target set temperature adjusting strategy corresponding to the target preset temperature range, the set temperature corresponding to the target indoor unit is adjusted. According to the scheme, the energy requirement of the indoor unit is adjusted by adjusting the set temperature, and therefore the indoor unit is protected.

The invention discloses an electrical control cabinet and an operation temperature control method, and relates to the technical field of electrical control cabinets, the system discloses a cabinet body, an air cooling system, a liquid cooling system, a compression type refrigeration system and an operation temperature controller are arranged in the cabinet body, and the operation temperature controller comprises an operation temperature monitoring unit, an electrical parameter mapping unit and an operation temperature control execution unit. Through the design and operation temperature control method of the electrical control cabinet, the temperature characteristics of each monitoring point in the electrical control cabinet can be predicted in advance, the multi-physical field simulation of the virtual control cabinet is combined, multiple different types of active heat dissipation systems are matched, and the multiple types of active heat dissipation systems are freely and cooperatively combined based on the virtual cabinet simulation. The capability limitation of a single heat dissipation mode is broken through, and the operation temperature of the electrical control cabinet is reasonably controlled while advanced regulation and control of the temperature of the cabinet body are realized.

The utility model provides a temperature control system of a continuous hot press, which relates to the technical field of hot presses and comprises an oil tank, a heater, a heat exchanger, a pressure die end, an electric cabinet, a temperature sensor and a circulating pump. The first end of the circulating pump is connected with the heater, and the second end is connected with the pressure mold end; the temperature sensor is arranged between the circulating pump and the heater; the electric control box is electrically connected with the heater, the heat exchanger, the temperature sensor and the circulating pump. According to the utility model, rapid heating and cooling of the hot press can be realized; the stability of the working temperature of the hot press is good; the heat exchange efficiency is high; it is guaranteed that the system works under the safe pressure, and meanwhile the function of emergency pressure relief when equipment leaks and breaks down is achieved.

The invention relates to the technical field of welding, in particular to a welding method which comprises the steps that S1, the service life t0 of a repaired part is determined according to the operation temperature T of the repaired part; s2, according to the operation temperature T and the planned operation time H, the feasibility of the nickel-based welding material repairing process is judged; s3, judging the stability of the nickel-based repair process; s4, according to the wall thickness delta and the outer diameter D of the pipeline, the effective thickness range of a weld joint is calculated, and the low-temperature tempering heat treatment frequency is determined; s5, welding is carried out, and low-temperature tempering heat treatment is carried out after the thickness of a newly-added welding seam reaches the effective welding seam thickness; s6, heat treatment; s7, carrying out nondestructive testing; s8, a nickel-based welding material is adopted for welding repair; s9, after no crack is found through nondestructive testing, nondestructive testing is carried out every 12 hours, 24 hours and 48 hours, and if no crack is detected through nondestructive testing after 48 hours, welding repair is completed; the method has the effects of improving the welding seam quality of the nickel-based welding seam and reducing the use hidden danger of the repaired part.

This invention provides a method, system, and nozzle for quantitative evaluation of the appearance of space engine nozzle coatings. The method includes: dividing the silicide coatings on the inner and outer surfaces of the nozzle into regions corresponding to different acceptance levels based on the operating temperature, thermal stress, and high-temperature gas erosion intensity of various parts of the nozzle; conducting full-area observation of the inner and outer wall coatings of the nozzle; identifying the regions where defects to be tested are located according to predefined zoning rules; comparing the observed defects with a pre-established standard defect map library to classify the defects; measuring the parameters of each defect based on the classified defects; comparing the measured defect parameters with the acceptance level corresponding to the region; and outputting a clear conclusion including whether the product is deliverable based on the comparison results. This invention provides an executable and quantifiable method for evaluating the appearance quality of coatings prepared by slurry sintering and embedding / infiltration methods.

The invention discloses a pressure regulating equipment state monitoring system and method based on data analysis, and relates to the technical field of equipment state monitoring. The method comprises the following steps: collecting electrical, mechanical and environmental signals of the voltage regulating equipment for preprocessing, and generating equipment response signals; calculating a dynamic response attenuation coefficient and a frequency spectrum offset degree based on the signal, and calculating a thermal noise gain coefficient according to equipment operation temperature data; by comprehensively analyzing the three parameters, the current running state of the equipment is judged, and a fault mode diagnosis result is generated, so that accurate equipment state monitoring and fault prediction are realized. Through multi-dimensional data fusion, accurate identification of multi-fault mode superposition and an early warning mechanism, the accuracy of equipment state monitoring and the fault prediction capability are improved, and the downtime and the maintenance cost are reduced.

The invention discloses an electric heating control method and system for a paver, and belongs to the technical field of engineering machinery, and the electric heating control method for the paver comprises the following steps: based on the parameters of an electric heating element of the paver, the initial temperature of the electric heating element, the initial temperature of a target heating object and the working temperature of the target heating object; according to the method, the optimal heating strategy enabling the electric heating element to heat the target heating object from the initial temperature to the working temperature for the shortest time and the minimum energy consumption is determined, and the electric heating element is controlled to heat the target heating object according to the optimal heating strategy. The situation that the electric heating element works at the maximum power all the time is avoided, the service life of equipment is prolonged, and the problems that an existing paver cannot effectively adjust the heating process, the electric heating element works at the maximum limit temperature for a long time, power consumption of the equipment is too high, and the service life is shortened are solved.

The utility model relates to the technical field of transformer frameworks, and discloses a vertical transformer framework structure which comprises a framework assembly and a pin assembly installed below the framework assembly, a clamping assembly is installed on the pin assembly, a positioning groove is formed in the framework assembly, and a magnetic core assembly is arranged on the outer side of the framework assembly and the outer side of the pin assembly. The fixing assembly is installed on the magnetic core assembly, the fixing assembly can enable a magnetic core to be always kept in an attached relation after being disassembled and assembled, the situation that the magnetic core is loosened in the using process, and consequently a transformer is squealled is effectively prevented, meanwhile, ventilation grooves and communication grooves in the framework assembly are matched with each other, and effective heat dissipation can be conducted on a coil in a framework. And therefore, the normal working temperature is kept, and the working efficiency is improved.

The invention relates to a method for determining operating temperatures of a heating device (1) and an exhaust gas flow (2) in the exhaust gas aftertreatment system of an internal combustion engine, wherein the heating device (1) has an electrical heating element (11) for heating the exhaust gas flow (2) and a temperature sensor (12) arranged downstream of the heating element (11) for measuring the temperature in the exhaust gas flow (2), wherein - a thermal model (100) of a system is created from the heating device (1) and the exhaust gas flow (2), wherein the thermal model (100) can be used to quantify the heat transfer within the system and the heat transfer between the system and the operating environment as a function of operating parameters of the exhaust gas aftertreatment system, wherein the thermal model (100) is designed to output the operating temperatures determined in the process, and - during operation of the combustion engine, at least the following steps are carried out continuously: ◯ Recording the operating parameters of the exhaust aftertreatment system, ◯ Updating the thermal model (100) based on the recorded operating parameters, and ◯ Output operating temperatures based on the updated thermal model (100).

The present application relates to the technical field of graphitization furnace temperature monitoring, and particularly relates to a graphitization furnace working temperature measuring device and a measuring method. The method comprises: obtaining furnace core thermocouple data, gas inlet pressure and gas mass flow rate of a protection tube during the working process of the graphitization furnace; obtaining viscosity correction flow resistance at each moment according to the thermocouple data, gas inlet pressure and gas mass flow rate at each moment; if the gas inlet pressure in a local period at a moment satisfies the pressure steady state condition and the thermocouple data satisfies the temperature reference interval, then obtaining flow resistance instantaneous fluctuation value according to the difference between the viscosity correction flow resistance at each moment in the period in which the corresponding moment is located and the overall distribution; obtaining a crack jet characteristic index by combining the flow resistance instantaneous fluctuation value and the gas inlet pressure, and then taking corresponding response actions. The present application provides reliable protection for the integrity of the thermocouple protection tube of the core temperature measuring element of the graphitization furnace, and improves the intelligent level and operation safety of the graphitization production process.

A method of operating an aerosol-generating device for generating an aerosol from an aerosol-forming substrate during a usage session is provided, the device including a heater, a power supply to supply power to the heater during the usage session, and control electronics; and the method including using the control electronics to: initiate one of a plurality of predetermined different heating profiles for the heater, each profile including different target operating temperatures for the heater, one profile including a temperature increase of subsequent target operating temperatures and another one profile including a temperature decrease of subsequent target operating temperatures, and control a supply of power to adjust a temperature of the heater to a target operating temperature, each of the plurality of target operating temperatures including between 4 and 7 different target operating temperatures, and the temperature of the heater increases or decreases linearly from one target to a next target.

The application provides a determination method and system of a reduction smelting separation operation temperature window, and relates to the technical field of metallurgical process parameter control. The determination method of the reduction smelting separation operation temperature window comprises the following steps: calculating the activity of V2O3 in the slag by using a multivariate slag series thermodynamic prediction model; obtaining a curve of the vanadium recovery rate changing with the temperature by performing temperature scanning calculation in a given temperature range; obtaining a target vanadium recovery rate, determining the lowest operation temperature; and determining the reduction smelting separation operation temperature window. By calculating the V2O3 activity under the raw material condition and combining the dynamic curve of the vanadium recovery rate, the lowest operation temperature meeting the target recovery rate is accurately locked. This realizes the adaptive adjustment of the operation temperature with the material fluctuation, avoids the energy waste caused by high temperature, prevents the recovery rate from falling caused by low temperature, and takes into account the high recovery rate and low energy consumption.

The invention relates to a temperature regulation and control system of an oil-cooled motor, the oil-cooled motor comprises a stator winding, a rotor end ring and a cooling system, the cooling system comprises an oil duct and an oil pump, the temperature regulation and control system comprises a temperature sensing module, a regulating valve group and a control module, and the control module is connected with the temperature sensing module, the regulating valve group and the oil pump; the regulating valve group is arranged in the oil duct; the temperature sensing modules are arranged at monitoring points, and the monitoring points are distributed on a stator winding, a rotor end ring and an oil duct and used for collecting the real-time temperature of the monitoring points. And the control module is used for predicting the temperature gradient change trend of the oil-cooled motor according to the real-time temperature and the real-time state data of the oil-cooled motor, and controlling the valve opening degree of the regulating valve group and / or the rotating speed of the oil pump according to the real-time temperature, the temperature gradient change trend and the real-time state data. According to the invention, through prospective judgment of the non-uniform temperature rise trend, the regulating valve group and the oil pump are actively controlled to maintain the stability and uniformity of the motor operation temperature field.

The present invention discloses a high-safety hot air balloon, which includes a balloon, a temperature flag mechanism, and a burner. A balloon cavity is formed inside the balloon. The temperature flag mechanism includes a mounting plate, two heat-sensitive clips, and a temperature flag. The mounting plate is fixedly arranged in the balloon cavity near the inner surface of the balloon. The two heat-sensitive clips are fixedly arranged on both sides of the mounting plate, and a clamp is formed between the bottoms of the two heat-sensitive clips. The temperature flag is clamped in the clamp. By adding the temperature flag mechanism to the balloon cavity, when the temperature in the balloon cavity reaches the maximum continuous operating temperature of the balloon, the clamp opens and releases the temperature flag to alert the pilot. After the pilot notices the falling temperature flag, he turns off the burner and lands the hot air balloon, avoiding damage to the balloon due to excessive temperature, thereby improving the safety of the hot air balloon.

This invention discloses a method, apparatus, and equipment for evaluating the clamping force variation of exhaust manifold mounting bolts, relating to the field of fastener testing technology. The method includes measuring the axial force-strain relationship curves of the exhaust manifold mounting bolts at different temperatures, and the strain elongation of the bolt shank at operating temperature; combining the axial force-strain relationship curves to obtain the axial clamping force of the mounting bolt in the bolted connection at room temperature; measuring the strain elongation of the bolt shank in the bolted connection at operating temperature to obtain the residual strain elongation; and based on the residual strain elongation and the axial force-strain relationship curves, obtaining the residual axial clamping force and comparing it with the axial clamping force of the mounting bolt in the bolted connection at room temperature to evaluate the clamping force variation. This application can accurately reflect the clamping force attenuation of exhaust manifold mounting bolts under actual working conditions, improving the reliability and accuracy of measurement results.

The utility model relates to the technical field of extrusion forming dies, and discloses a metal extrusion forming die which comprises a first shell, a second shell, an extrusion chamber, a buffer pad, a movable groove, a maintenance door, a supply port, a metal melt runner and an extrusion disc. The extrusion device is used for containing and forming metal melt, the buffer pad is used for absorbing and reducing vibration and impact generated in the extrusion process and protecting equipment from being damaged, and the cooling device is used for controlling the operation temperature of the equipment, preventing overheating and ensuring correct cooling of metal. According to the metal extrusion forming die, through the integrated hydraulic system and the precise die body, equipment can exert uniform pressure on metal melt under control, it is ensured that the shape, size and quality of each product all reach preset standards, human errors and material waste are reduced through highly-automatic operation, and the production efficiency is improved. And the overall efficiency and the output quality of the production line are improved.

This application provides a method for thermogravimetric analysis (TGA) of resin-based composite materials for aero-engine components, belonging to the field of composite material testing technology. The method includes: extracting the operating state points of the aero-engine components; simplifying the operating state points; determining statistical results of the component's operating temperature and operating time for the thermogravimetric analysis based on the simplified operating state points; conducting a preliminary thermogravimetric analysis based on the statistical results of the component's operating temperature and operating time; using the preliminary thermogravimetric analysis results as a benchmark, determining the thermogravimetric trend and the direction for conducting thermogravimetric analysis using a temperature gradient; determining the temperature threshold for thermogravimetric analysis based on the temperature gradient thermogravimetric analysis results; calculating the cumulative thermogravimetric rate of the composite material used in the aero-engine components over the entire engine lifespan by calculating the thermogravimetric rate at each operating temperature above the cumulative temperature threshold; and accelerating the thermal aging of a new test piece to the cumulative thermogravimetric rate to obtain performance loss results.

The invention provides a coal mining machine roller monitoring control system based on a hydroelectric interlocking mechanism, and the system comprises a sensing layer which comprises a waterway pressure sensor for monitoring the waterway pressure of a spraying system, a waterway flow sensor, a motor current transformer for monitoring the working current of a cutting motor, and an infrared temperature sensor for monitoring the temperature of a roller and a coal mining working surface; the control layer is internally provided with an abnormal temperature diagnosis data model so as to predict the working temperature under the current working condition and judge whether the working temperature is abnormal or not, and therefore a water pressure flow interlocking control strategy and a temperature gradient interlocking control strategy are generated; comprising an anti-explosion audible and visual alarm, a contactor for controlling start and stop of a cutting motor, a flow regulating valve for regulating the flow of a water spraying path of a spraying system, and a power-off protection device, and an execution layer executes matching actions based on a control strategy. And the coal mining machine can be automatically stopped and forcibly cooled when the cooling spray fails or the temperature suddenly rises.