1474 results about "Heating temperature" patented technology

The invention relates to a networking control method, device and system based on an internet-of-things intelligent heat supply technology, and is suitable for the technical field of intelligent heat supply. According to the method, user heat supply related parameters are input into a prediction model obtained through training under theoretical conditions, a prediction value is output, and environment offset parameters capable of performing sum representation on all complex parameters influencing the indoor heat supply temperature of a user are obtained through difference comparison between the prediction value and a corresponding actual value. The subsequent heating demand temperature value of the user is accurately compensated and corrected based on the obtained environment offset parameter, so that the corresponding heating compensation amount can be accurately reserved according to the heating temperature deviation caused by the influence of the environment parameter of the user when the heating primary side supplies heat, the heating is more accurate and reasonable, and the user experience is improved. The heat supply demand of the user is successfully guaranteed, heat supply resources are not wasted, and the intelligent heat supply efficiency is improved.

The invention relates to a method for improving the same-circle mechanical property uniformity of a low-carbon cold heading steel wire rod, which comprises the following steps of: firstly, carrying out sectional heating on a steel billet at the temperature of a preheating section of 715-785 DEG C, the heating temperature of a first section of 810-850 DEG C, the heating temperature of a second section of 920-960 DEG C and the temperature of a soaking section of 1000-1040 DEG C; then the prepared steel billet is rolled into a wire rod, the initial rolling temperature ranges from 910 DEG C to 950 DEG C, the finish rolling inlet temperature ranges from 865 DEG C to 885 DEG C, the finish rolling outlet temperature is smaller than or equal to 1020 DEG C, and the finish rolling temperature ranges from 890 DEG C to 910 DEG C; the prepared wire is subjected to water cooling to 840-860 DEG C for spinning, and then the wire is rolled into a wire rod at 780-850 DEG C; and finally, the prepared wire rod is placed on a stelmor slow cooling line for heat preservation and slow cooling, the stelmor slow cooling speed is 0.2-1 DEG C / s, the temperature of entering a heat preservation vestibule is 740-770 DEG C, the heat preservation time of the heat preservation vestibule is 75-150 min, and the temperature of leaving the heat preservation vestibule is smaller than or equal to 400 DEG C. By means of the method, the same-circle mechanical property tensile strength fluctuation of the steel wire rod is smaller than or equal to 10 Mpa, the percentage reduction of area fluctuation is smaller than or equal to 2%, the percentage elongation after fracture fluctuation is smaller than or equal to 2%, the yield strength fluctuation is smaller than or equal to 8 Mpa, metallographic structures are evenly distributed, and no abnormal structure exists.

The invention discloses a multi-stage temperature accurate control method based on a neural network algorithm, relates to the field of oven temperature control, and particularly comprises the steps of setting a final target temperature # imgabs0 #, and dividing a heating process of heating to the final target temperature # imgabs1 # into a rapid temperature rise stage, a temperature rise control stage and an accurate temperature control stage, an intermediate target temperature # imgabs2 # is set in each stage so as to gradually approach the final target temperature # imgabs3 #; according to the established oven system model, the influence of different intermediate target temperatures # imgabs4 # on temperature response is analyzed, and a proper intermediate target temperature # imgabs5 # combination is found; the heating temperature # imgabs6 # of the heating wire and the temperature # imgabs7 # in the oven are detected in real time through a temperature sensor, and then segmented control is conducted; through segmented control, the temperature rise rate and control precision of each stage are optimized, overshoot is reduced, the response speed is increased, the target temperature is gradually approached, and temperature overshoot caused by one-time large-amplitude temperature rise is avoided.

The invention discloses a distributed energy station heat supply load prediction method based on LSTM, relates to the technical field of distributed energy station heat supply, and provides a distributed energy station heat supply load prediction method based on a long short-term memory network. Through learning past historical operation data, weather data, building data and time data of each distributed energy station after abnormal processing of an isolated forest algorithm, a unique memory mechanism and a gating structure of LSTM are applied to analyze a heat supply load change rule of the energy station. And the most reasonable outlet water temperature or return water temperature in a certain hour in the future is predicted according to real-time data and is issued to the energy station in time, the heating temperature of the air source heat pump is adjusted, accurate heat supply regulation and control are achieved, room temperature balance can be effectively maintained, the COP value of the energy station is increased, and work orders and energy waste are reduced.

The invention relates to the technical field of equipment management and control, in particular to an evaporative crystallization equipment operation management and control system and method based on multi-modal perception, and the system comprises a raw material characteristic analysis module, a temperature regulation and control module, a heating time adjustment module and an equipment maintenance management module. According to the method, the energy utilization efficiency and the raw material conversion rate are optimized by analyzing the characteristics of the raw materials and adjusting the heating temperature in the evaporative crystallization process, the energy utilization efficiency is improved by monitoring the time change of the quality of the raw materials, evaluating the evaporation rate of the raw materials and dynamically adjusting the heating time, and meanwhile, the energy consumption of equipment is reduced; by monitoring the power consumption, voltage and current data of equipment operation and combining the maintenance history of the equipment, the operation stability of the equipment can be accurately evaluated, the maintenance requirements of the equipment can be identified in time, faults can be prevented in advance, the long-term stable operation of the equipment is ensured, and the continuity and safety of the production process are ensured.

The invention relates to the technical field of non-metal composite material mold forming processes, in particular to a method for solving the problem of wind power blade curing crazing whitening, and the method comprises the following specific steps: S1, region division; independently connecting a heating device according to the crazing generation area; s2, laying a cloth layer and a flow guide structure; s3, heating and curing the half blade; after the curing procedure is started, all the areas are heated at the fixed temperature in a stepped mode, and it is guaranteed that all the areas are synchronously heated; s4, closing the mold; s5, heating and curing the blade; gradient heating is adopted for heating, and the heating temperature is smaller than the TG value of the product; and S6, checking. According to the method, through temperature design of pouring curing and mold closing curing and heating partition of independent partition crazing whitening, the influence on partitions with different thicknesses is reduced, the heat release peak-to-peak value during curing is reduced, the phenomenon of resin implosion caused by heat release accumulation of a product is avoided, the problem of crazing whitening is prevented, and the blade forming quality is improved.

The invention relates to the technical field of graphene, and discloses a deep skin anti-wrinkle beauty instrument applying a graphene electrothermal effect and a control method, the method comprises the following steps: pre-activating a graphene electrothermal film to obtain a negative temperature coefficient resistance characteristic parameter; performing contact state detection and multi-parameter analysis on the target area to obtain personalized temperature control parameters; pWM sectional power control is carried out on the graphene electrothermal film based on the personalized temperature control parameters and the negative temperature coefficient resistance characteristic parameters, and a staged heating temperature output strategy is obtained; real-time feedback adjustment is carried out based on a staged heating temperature output strategy, and a stable temperature control signal is obtained; the graphene electrothermal film is subjected to gradual cooling power adjustment according to the stable temperature control signal, meanwhile, the safe stop state of the beauty instrument is confirmed, the unique characteristic that the resistance value is reduced when the temperature of the graphene material rises is utilized, and compared with a traditional linear resistance material, the temperature control precision and the response speed are higher.

The invention relates to the technical field of heating temperature prediction, and relates to a heating room temperature prediction method, a medium, equipment and a heating room temperature prediction system, and the method comprises the steps: obtaining target information corresponding to a target house; inputting the target information into a predetermined heating room temperature prediction model to obtain a predicted room temperature corresponding to the target house; wherein the heating room temperature prediction model is a model obtained by training according to first historical heating data, and the first historical heating data comprises house information and actual room temperature of a plurality of houses, historical water supply temperature and historical water return temperature of a heating station for supplying heat to the houses, and historical meteorological information when the actual room temperature is collected; the actual room temperature is acquired by temperature sensors deployed in the houses, and the plurality of houses are part of houses in the building. According to the method, the prediction precision is higher, the hardware cost and the installation cost are remarkably reduced, the power consumption of the heating system is reduced, and the external temperature change can be responded in real time.

The invention discloses lip tile heating equipment and an online lip tile replacement method, and relates to the technical field of glass production, the lip tile heating equipment comprises a support, a heat preservation device, a heating device and a control device; the heat preservation device is arranged on the support, a heat preservation space is defined by the heat preservation device, and the heat preservation device is used for maintaining the temperature in the heat preservation space; the heating device is arranged in the heat preservation space, a containing space is defined by the heating device and the heat preservation space, the containing space is used for containing lip tiles to be replaced, and the heating device is used for heating the lip tiles located in the containing space; the control device is arranged on the support, the control device is electrically connected with the heating device, and the control device is used for controlling the heating temperature of the heating device. According to the technical scheme provided by the invention, the temperature rise of lip brick replacement is controllable, the influence of the temperature rise on the lip brick is reduced, and the service life of the lip brick is prolonged.

The utility model discloses a heating seat ring and intelligent cover plate, the heating seat ring comprises a seat ring upper shell, a heating film and a seat ring lower shell, the seat ring upper shell is provided with a cavity enclosed by side plates, the cavity is provided with an upper opening and a side opening, a film body of the heating film is provided with a protruding part, the protruding part extends into the cavity through the side opening, and the heating film is arranged in the cavity. A sealing plate used for sealing the side opening is arranged on the side opening, and a temperature fuse is arranged in the cavity and tightly attached to the protruding part. The protruding part of the heating film is arranged in the cavity, the temperature fuse is installed after injection molding is completed, the protruding part of the heating film is communicated with the heating wire of the whole heating film, and therefore the temperature fuse can effectively sense the heating temperature of the heating film in the seat ring, and the situation that the temperature fuse is fused due to the high temperature of secondary injection molding can be avoided; the temperature of the heating film can be effectively sensed, the heating film is intact and not damaged during injection molding, and potential safety hazards are avoided.

The invention discloses an energy-storage heat-conducting structural adhesive testing device and method, and belongs to the technical field of material thermal performance test.The energy-storage heat-conducting structural adhesive testing device comprises a bearing plate arranged on a pipeline stand column and a plurality of testing sets located on the bearing plate, and each testing set comprises a master control box, a pressure sensing assembly, a heating assembly and a guiding assembly; the pressure sensing assembly can perform intelligent pressure control on a to-be-tested sample, heat-conducting property deviation under different pressures is eliminated, the heating assembly adopts a graphene heating film to realize an automatic frequency modulation function, so that the heating temperature is uniform and constant, and the guiding assembly comprises a pressing plate, a guiding column, an electromagnet and a strong magnet which are located above the heating assembly. According to the invention, axial and planar heat conduction performance tests can be carried out on the to-be-tested sample, simultaneous multi-station tests are also realized, the accuracy of comparison tests under the same working condition is ensured, and the test precision and the working stability of the heat conduction performance of the to-be-tested sample are improved.

The invention relates to a preparation method of an MAX phase material. According to the specific technical scheme, precursor powder materials needed for preparing the MAX phase material are mixed to obtain mixed powder, the mixed powder is subjected to mechanical ball milling and cold press forming to form a blank, a to-be-sintered blank is obtained, the to-be-sintered blank is subjected to ultra-fast Joule hot sintering, and the MAX phase material is prepared. The MAX phase material is prepared by using an ultra-fast Joule thermal sintering method, the Joule thermal sintering method has the characteristics of high heating and cooling rate (104 DEG C / min) and high heating temperature (3000 DEG C), and according to the Arrhenius formula, the synthesis rate of the MAX phase material can be greatly improved due to the characteristics of high heating and cooling rate and high heating temperature, and rapid preparation of the MAX phase material is realized. According to the method, the preparation period of the MAX phase material can be greatly shortened, so that the aging can be improved, the energy consumption can be reduced, accurate and controllable preparation can be realized, and the method has important significance on low-cost and large-scale preparation of the MAX phase material.

Disclosed in the present disclosure is a steel. Apart from 90% or more by mass Fe and inevitable impurities, the steel further contains the following chemical elements in percentage by mass: C: 0.22-0.33%, Si: 0.1-1.0%, Mn: 0.3-1.5%, Cr: 0.2-1.6%, Ni: 2.2-3.8%, Mo: 0.1-0.7%, Cu: 0.02-0.3%, Al: 0.01-0.045%, V: 0.01-0.25%, and N≤0.013%. Further disclosed in the present disclosure is a method for manufacturing the steel, comprising: (1) smelting and casting; (2) forging or rolling, involving processing a casting blank to a finished product size by using a roll-in-one-heat process or roll-in-two-heat process; and (3) quenching and tempering: wherein the heating temperature of quenching is 860-1000° C., the holding time is 2-6 h, and water cooling is performed after the quenching; and the tempering temperature is 400-600° C., the holding time is 1-4 h, and air cooling to room temperature is performed after tempering. The steel of the present disclosure has high strength, well matched toughness and plasticity, and good weather resistance, thereby having good application prospects.

The invention discloses a method for improving indoor heating. A circular heating electric stove wire electric stove, a stepless temperature and pressure regulator, a circular electric ceramic stove microcrystalline panel, an upper-layer stainless steel round barrel, a lower-layer stainless steel round barrel and water are matched for use, the water added into the lower-layer stainless steel round barrel is heated and boiled, and low-cost, high-efficiency and energy-saving effects are achieved by efficiently utilizing water vapor generated by heating. The invention discloses a noiseless indoor heating method. A simple and convenient mode is adopted, the comfortable and ideal temperature requirement is met, and the indoor heating method which is low in cost, environmentally friendly and free of noise and reaches about 24 DEG C is achieved. Under different environment conditions, the heating temperature and the heating time are set according to respective requirements; the heating device is simple in structure and convenient to use, continuous heating is conducted for 60 minutes at the power of 200 W-300 W in a room with the area of 15 square meters, and electricity consumption displayed by an electricity meter is 0.10 yuan to 0.15 yuan and is far lower than the electricity consumption cost of air conditioner heating and is only equivalent to about 50% of the concentrated heating cost.

The invention provides an intelligent closestool temperature adjusting method, a server, a medium and a program product, and relates to the technical field of intelligent control. The method comprises the steps that the initial skin temperature when a user makes contact with a seat ring and the indoor environment temperature are collected, a temperature change curve is established to determine the skin temperature sensing condition and the optimal temperature adjusting time, the two are combined to calculate the temperature sensitivity coefficient, and the target temperature is determined according to the temperature sensitivity coefficient and heated to the preset weight temperature within the optimal time. The skin temperature rising condition is detected to determine the optimal temperature, and heating is continued if the skin temperature does not rise. The corresponding relation between the optimal temperature and the use time period, the environment temperature and the sensitivity coefficient is stored in a database, when the same user is detected next time, the heating parameter is called according to the current environment temperature to adjust the temperature, and by implementing the method, the heating temperature is automatically adjusted according to the individual difference and the environment temperature, and the comfort level and the energy saving performance are improved.

The invention discloses an anti-condensation and humidity control system of a low-voltage switch cabinet, and relates to the technical field of environment regulation and control of low-voltage electrical equipment, and the system comprises a data collection module which collects data through a multi-region temperature and humidity sensor; the humidity prediction module is used for predicting 30-minute humidity by using a long-short-term memory neural network in combination with cabinet body parameters and historical data, and pre-evaluating the condensation risk; the anti-condensation execution module is used for starting a PTC heating device, an axial flow ventilation device or a semiconductor dehumidification device according to the prediction result; the system linkage module interacts with an electric power monitoring system and adjusts parameters of the execution device when the load is high; the parameter self-learning module is used for optimizing the prediction model and recording optimal threshold values of the device in different environments; and the safety protection module is used for monitoring the heating temperature and the condensate water level and switching an emergency strategy when a fault occurs. The system has the advantages of comprehensive monitoring, accurate prediction, cooperative operation of execution devices, adaptation to different environments and loads, reduction of condensation faults, prolongation of the service life of elements, and improvement of the operation reliability of the switch cabinet.

To provide a cooling heating instrument for providing a 'cooling comfortable temperature duration time' or 'heating comfortable temperature duration time' in which a cooling comfortable temperature or heating comfortable temperature lasts for a long time, by efficiently cooling or heating a human body affected part by inhibiting cooled air or heated air from being caused to diffuse to the outside by a cooling heating medium when being attached to the human body affected part.SOLUTION: A cooling heating instrument comprises: a surface member 2 that comprises foamed plastic material 20 including closed cell foamed plastic material having porous closed cells and / or open cell foamed plastic material having porous open cells and can be attached so as to cover a human body affected part; and a cooling heating medium 3 provided on the inner surface side of the surface member 2. The cooling heating instrument is configured so that when being attached so as to cover the human body affected part, the cooling heating medium 3 is positioned between the surface member 2 and the human body affected part and can cool or heat the human body affected part.SELECTED DRAWING: Figure 1

The invention discloses a central air conditioner control method, system and device, a medium and a program product, and relates to the technical field of data processing and control systems.The method comprises the steps that a central air conditioner system control model is built; the method comprises the following steps: constructing an actor network, and embedding an optimization control model consisting of a global critic network and a local critic network of a GAT (Graphics Attention Transform); and training the optimization control model, and controlling the refrigeration temperature set value and the heating temperature set value of each area according to the current state observation variable of each area by using the trained actor network. A critic network is designed into a global critic network and a local critic network, the problem that regional thermal comfort awards and central air conditioning system total energy consumption awards conflict with each other in the training process is relieved, a graph attention network is fused into the global critic network, coupling information in the system is fully extracted, and the optimization control performance is improved.

The invention discloses a vacuum freeze dryer, particularly relates to the technical field of vacuum freeze drying, and comprises a drying chamber, a refrigerating system, a vacuum system, a heating system, a control system and an energy recovery device. The drying chamber is used for containing materials, the inner wall of the drying chamber is made of efficient heat insulation materials, the refrigerating system comprises a high-precision temperature sensor and an intelligent temperature controller, the refrigerating temperature fluctuation is accurately controlled within + / -1 DEG C, the vacuum degree fluctuation of the vacuum system is kept within + / -5Pa through a vacuum degree sensor and a stabilizing device, and the heating system adopts uniform heating elements. And it is ensured that the heating temperature nonuniformity is smaller than + / -1 DEG C, a control system achieves automatic drying, and an energy recovery device recovers waste cold and waste heat for other links. The problems that an existing vacuum freeze dryer is low in temperature control precision, unstable in vacuum degree, low in automation degree, low in energy utilization rate and the like are solved, the material quality can be effectively kept, the drying efficiency is improved, and energy consumption is reduced.

The invention discloses a wellbore integrity casing damage simulation and repair experimental device, which comprises a heating temperature control box, the interior of the heating temperature control box is divided into an upper part and a lower part, the upper part forms a first cavity for accommodating liquid, and the lower part forms a second cavity for placing a casing damage simulation module or a cement column damage simulation module; the liquid injection and pressurization equipment is communicated with the first cavity and is used for injecting a plugging agent or formation water into the first cavity and pressurizing the plugging agent or the formation water so as to drive the plugging agent or the formation water to enter the casing damage simulation module or the cement column damage simulation module; and the ball valve is arranged at the bottom of the heating temperature control box, is communicated with the second cavity and is used for controlling opening and closing of an outlet of the casing damage simulation module or the cement column damage simulation module. According to the invention, the field environment of the oil and gas well can be simulated more accurately, and a repair experiment can be carried out on a damaged sleeve or a cement column, so that not only can experimental data support be provided for researchers, but also a more accurate repair scheme can be provided for field operators.

The invention provides a ceramic heating plate and a processing method of the ceramic heating plate. The machining method of the ceramic heating plate comprises the steps that the ceramic heating plate formed through normal-temperature isostatic pressing is prepared, the upper surface of the ceramic heating plate is made of aluminum nitride, at least an electrostatic adsorption metal wire mesh electrode is embedded in the ceramic heating plate, the process temperature of normal-temperature isostatic pressing forming is lower than 25 DEG C, and the process air pressure of normal-temperature isostatic pressing forming is lower than 200 Mpa; the process temperature of the high-temperature and high-pressure sintering is higher than 1500 DEG C, the process air pressure of the high-temperature and high-pressure sintering is higher than 100 Mpa, and the high-temperature and high-pressure sintering is used for avoiding the use of a binder or a ceramic layer spraying process, so that the heating temperature is increased, the sparking phenomenon of an equipment corrosive agent under high electrostatic adsorption voltage is avoided, and the service life of the equipment corrosive agent is prolonged. The service life of equipment is prolonged; and the safety performance of the process is improved.

The invention provides a method and a system for accurately controlling the heating temperature rise of a ladle refining furnace. The method comprises the following steps of: constructing a historical heat data information base; pre-processing the heating temperature rise value of the historical heat of each condition, and optimizing a first temperature rise heating parameter of the heat; a theoretical second heating temperature rise parameter is obtained through electric power heat balance calculation; the steel ladle infrared thermal imaging detection data of the historical heat and the corresponding molten steel temperature in the steel ladle are subjected to correlation analysis, and a third heating temperature rise parameter of the heat is obtained; inputting the first heating temperature rise parameter, the second heating temperature rise parameter and the third heating temperature rise parameter into a convolutional neural network, and outputting a recommended fourth heating temperature rise parameter; and a fifth heating temperature rising parameter of the current heat is obtained, the fourth heating temperature rising parameter and the fifth heating temperature rising parameter are compared to obtain an actual heating parameter of the current heat, and accurate control over the temperature of the current heat is achieved according to the actual heating parameter. Based on the method, the invention further provides a system for accurately controlling the heating temperature rise of the ladle refining furnace. According to the invention, accurate control of the temperature of the furnace is realized.

The utility model discloses a full-automatic fabric cool feeling tester which comprises a detection table, a lifting mechanism is arranged on the upper portion of the detection table, a supporting plate is arranged on the side face of the lifting mechanism, a measuring mechanism is arranged on the lower portion of the supporting plate, and the measuring mechanism is fixedly connected with the supporting plate. And a constant-temperature plate is arranged on the surface of the detection table and is positioned below the measuring mechanism. The movable plate is arranged on the surface of the screw rod, the mounting seat is arranged on the surface of the movable plate, the heating mechanism is arranged in the mounting seat, the heating temperature of the heating mechanism is controlled through the controller, and meanwhile the transverse moving mechanism drives the movable plate to move to the lower portion of the measuring mechanism to heat the measuring mechanism. The measuring mechanism with the temperature higher than that of the sample makes contact with the sample, the change of the temperature of the measuring mechanism along with time is measured, the contact cool feeling coefficient of the measuring mechanism is calculated, the comfort of the fabric is evaluated, and a user can more visually select a proper fabric product.

The invention relates to the technical field of material drying, in particular to spray drying equipment. The spray drying equipment comprises a spray drying tower, an atomizer and a heating system, wherein the atomizer is arranged in the center of the top of the spray drying tower; an inlet of the heating system is used for inputting external air, an outlet of the heating system is used for conveying hot air into the spray drying tower, and the temperature of the hot air conveyed by the heating system is in a decreasing trend from the center of the spray drying tower to the tower wall of the spray drying tower. In the drying process of the spray drying equipment, the heating temperature at the center of the spray drying tower is higher than the heating temperature near the tower wall of the spray drying tower, the high heating temperature at the center of the spray drying tower can guarantee the drying degree of materials, and the low heating temperature near the tower wall of the spray drying tower can further dry the materials and also can guarantee the drying degree of the materials. And meanwhile, the temperature of the material cannot reach the glass-transition temperature, so that the aim of inhibiting the hot-melt wall sticking phenomenon is fulfilled.

The invention provides a heating disc and thin film deposition equipment, the heating disc comprises a main shell and an air pipe, a heating space is arranged in the main shell, a plurality of vent holes penetrating to the heating space are formed in the upper end face of the main shell close to the edge of the main shell, and a through hole penetrating to the heating space is formed in the lower end face of the main shell; one end of the air pipe penetrates through the through hole to communicate with the heating space; wherein airflow with temperature enters the heating space along the air pipe and flows to the back side of the wafer through the plurality of vent holes. According to the application, the plurality of vent holes are designed at the edge of the upper end surface of the main shell, and the airflow with temperature is introduced into the heating space through the air pipe, so that the airflow is blown away from the plurality of vent holes to the back side of the wafer, and the wafer is directly heated, so that the heating temperature of the edge area of the heating disc is kept consistent with the heating temperature of other areas; therefore, the temperature uniformity of the heating disc is improved, the heating temperature of the whole wafer is ensured to be uniform, and the overall heating effect of the wafer is improved.

The invention discloses a workpiece core-surface zero-temperature-difference heating method, and belongs to the technical field of large workpiece heat treatment. The invention aims to solve the problem of overlarge temperature difference between the surface and the core in the heat treatment process of a large workpiece. Comprising the following steps: on the basis of a one-dimensional unsteady state heat conduction equation, obtaining a heat treatment furnace heating temperature field curve of a to-be-heated workpiece heated from an initial temperature to a set temperature in a heat treatment furnace with a set temperature by adopting a numerical simulation method; meanwhile, a self-resistance heating temperature field curve of the workpiece to be heated under the set current condition is obtained; heating a workpiece to be heated under the condition of a set linear heating rate of a heat treatment furnace and under the condition of a set current of self-resistance heating to obtain a comprehensive heating unsteady-state temperature field curve; and based on the comprehensive heating unsteady state temperature field curve, current is adjusted, self-resistance heating is conducted on the to-be-heated workpiece, the actual comprehensive heating temperature field curve of the to-be-heated workpiece tends to be stable, and uniform heating of the to-be-heated workpiece is achieved. The method is used for heat treatment of large castings and forgings.

The invention discloses a heating temperature rise monitoring method and device for parts of an overhead line system, and relates to the technical field of data processing, and the method comprises the steps: obtaining the real-time monitoring information of the overhead line system through a multi-source sensor, and rendering the data of a first predetermined region to a three-dimensional model of the overhead line system; and matching the three-dimensional point location of the shielding position, obtaining real-time prediction information of the point by using inverse distance interpolation, and obtaining a real-time temperature value through fitting. And performing temperature rise analysis by combining the monitoring information of the second predetermined area, and calculating the relative temperature difference. And when the relative temperature difference reaches a threshold value, adding the position into a heating temperature rise list, and executing early warning and maintenance processing. The technical problems that in the prior art, contact network parts behind a pantograph operation area are likely to be shielded by a pantograph and cannot be measured, and a detection blind area is formed are solved, and the technical effects that the multi-source sensing data and the inverse distance interpolation algorithm are combined, intelligent temperature detection is conducted on the shielded parts, and the detection blind area is overcome are achieved.

The utility model discloses a heat tracing temperature adjusting system for an automatic water cutting device of a liquefied gas storage tank, which comprises a liquefied gas spherical tank and the automatic water cutting device, the liquefied gas spherical tank is connected with the automatic water cutting device through a water discharging pipe, a remote control valve and a water cutting valve are arranged on the water discharging pipe, a tank root valve is arranged at the position close to the liquefied gas spherical tank, and the tank root valve is connected with the automatic water cutting device. A thermometer is arranged on the upper portion of the automatic water cutting device, a hot water supply pipe and a hot water return pipe are arranged on the outer side face of the lower portion of the automatic water cutting device respectively, and a hot water supply tank root valve and a hot water return tank root valve are arranged on the hot water supply pipe and the hot water return pipe close to the automatic water cutting device respectively. According to the heat tracing temperature adjusting system for the automatic water cutting device of the liquefied gas storage tank, the heat tracing temperature of the automatic water cutting device can be controlled, frequent opening of a safety valve is avoided, and the workload of workers is relieved.

The invention discloses a thin pancake machine heating temperature data analysis processing method and system, and relates to the technical field of data analysis, in the step S2, a temperature distribution model is fitted by using a temperature rise data set, and statistical characteristics of temperature in each monitoring period are accurately reflected through calculation of an optimal estimation parameter. A plurality of groups of temperature intervals are divided according to an equal probability mode through probability density analysis, a high-density area in temperature distribution can be effectively identified, the probability distribution-based division method ensures that the cumulative probability of each temperature interval is equal, and S3, based on the divided temperature intervals, a target temperature is set and the heating power is dynamically optimized, so that the heating efficiency is improved. The heating power can be monitored and adjusted in real time in the process, so that the heating process of the pancake machine is kept within the target temperature range, and the phenomenon of uneven heating caused by temperature fluctuation is reduced.

The invention discloses a method for improving the impact toughness of an A694 F65 submarine forging, which comprises the following steps: forging and heating: forging the A694 F65 forging at the heating temperature of 1180-1250 DEG C, carrying out stepped heating, at least upsetting twice and drawing twice in the forging process, and ensuring that the forging ratio is not less than 4; preheating treatment: austenitizing at 930 + / -10 DEG C, then cooling to 650 + / -10 DEG C along with a furnace, preserving heat for 2-3 hours, and then air-cooling to room temperature; and the heat treatment mode comprises quenching and tempering treatment, and the A694 F65 forge piece with good impact toughness is obtained. The invention discloses a method for improving the impact toughness of A694 F65 submarine forgings, which solves the problem of unstable impact toughness caused by non-uniform microstructure, adjusts and uniformizes the microstructure of the forgings and improves the impact toughness of the A694 F65 forgings.