1096 results about "Thermocouple" patented technology

The invention relates to the technical field of wire performance detection, and discloses a wire high temperature resistance detection method, device and equipment and a storage medium. The method comprises the following steps: arranging micro thermocouple array sensors on the surface, the bending part and the connecting point of an outer insulating layer of a to-be-measured wire rod to obtain a wire rod temperature monitoring network; placing the to-be-tested wire rod in a constant-temperature box to execute a high-temperature cyclic loading test, and collecting real-time temperature response data of the to-be-tested wire rod; carrying out temperature gradient analysis and heat distribution characteristic calculation to obtain a temperature change characteristic parameter set; executing temperature fluctuation compensation and thermal stress accumulation calculation to obtain thermal stress characteristic parameters; and carrying out aging characteristic analysis on the wire insulating material through the thermal stress attenuation network model to obtain wire predicted life and failure probability distribution of the to-be-tested wire in a high-temperature environment. The method can comprehensively capture the temperature change characteristics of each part of the wire rod, and achieves the precise prediction of the failure probability of the wire rod under different temperature conditions.

The invention discloses a light field tomography system and a flame three-dimensional temperature field reconstruction method, and belongs to the technical field of flame temperature measurement. The problem that the temperature field reconstruction error of an existing light field tomography method is large is solved. The method comprises the following steps: firstly, shooting a light field image of a measured flame by using a light field tomography system, dividing a space region where the measured flame is located into micro-element bodies, and then performing flame radiation ray tracing from each pixel point on the light field image of the measured flame; establishing a radiation transfer equation set according to a tracing result of flame radiation light, obtaining a reconstruction equation set according to the established radiation transfer equation set, and solving the reconstruction equation set based on multi-point accurate temperature measurement value information of a thermocouple to obtain black body spectrum radiation intensity of each infinitesimal body of the flame; and finally, converting the black body spectrum radiation intensity of each infinitesimal body into the temperature of each infinitesimal body to realize temperature field reconstruction. The method can be applied to flame three-dimensional temperature field reconstruction.

The invention provides a boiler combustion state visualization method, which comprises the steps of embedding a plurality of thermocouple temperature sensors in gaps of refractory bricks on the inner wall of a boiler hearth, acquiring temperature data of the hearth at different depths in real time, and transmitting the temperature data to a data acquisition terminal through a wireless communication module; fitting the normalized temperature data matrix by adopting a three-dimensional thin-plate spline interpolation algorithm to generate a hearth three-dimensional real-time temperature distribution model, performing mesh generation on the three-dimensional temperature distribution model by combining hearth geometric structure parameters obtained from computer aided design software, and constructing a hearth temperature finite element model; the hearth temperature finite element model is imported into ANSYS finite element analysis software, hearth wall surface material attributes and combustion heat load boundary condition parameters are set, transient thermal analysis of a hearth temperature field is carried out, and a temperature estimation value of any position of the hearth changing along with time is obtained.

The invention discloses a thermal control instrument fault self-diagnosis system based on multi-source data fusion, and relates to the technical field of prediction and health management. The thermal control instrument fault self-diagnosis system based on multi-source data fusion comprises the following steps: a data collection and arrangement module used for collecting thermal control state data in real time and preprocessing the thermal control state data; the feature construction and extraction module is used for performing thermal deviation anomaly judgment on the preprocessed thermal control state data; the state intelligent evaluation module is used for performing temperature trend comparison on the thermal control state data after the thermal deviation abnormity judgment; the diagnosis linkage control module is used for fusing thermal deviation abnormity judgment and a temperature trend comparison result to execute control and participate in adjustment; and the result displaying and filing module is used for sorting and recording the measuring point diagnosis result and the processing state. The problems that false alarm is caused by wall temperature thermocouple signal drifting and abrupt change, fusion analysis of adjacent measuring points and operation states is lacked, and real overheating and instrument faults are difficult to distinguish are solved.

The invention provides a method for obtaining the optimal low-temperature impact toughness and a welded body, and the method comprises the following steps: S1, obtaining chemical components of sample steel, and calculating the cooling rate corresponding to the bainite phase change curve nose tip temperature of the sample steel; s2, the cooling rate serves as the key cooling rate of the welding heat cycle process, and the corresponding welding heat input amount is calculated; s3, cutting a plurality of cuboid thermal simulation initial samples of which the length directions are parallel to the rolling direction of the steel plate from the sample steel; s4, two-pass welding thermal simulation cycle experiments at different temperatures are set; s5, two thermocouples are welded to the center of the cuboid thermal simulation initial sample for temperature measurement, and a welding simulation experiment is completed; and S6, size machining is conducted on the welding sample, a low-temperature impact experiment is conducted, impact energy under different technologies is measured, and the optimal impact toughness of CGHAZ and ICCGHAZ is determined. The method can be used for developing and optimizing the welding process with insufficient low-temperature impact toughness of the submerged-arc welding heat affected zone of the low alloy steel.

The invention relates to the technical field of task scheduling, in particular to a task scheduling optimization system for a smelting process, which comprises a furnace temperature identification module, a hot load analysis module, a load screening module, a sorting regulation and control module and a task joint control module. According to the method, a stable operation section is screened based on thermocouple time sequence temperature difference fluctuation characteristics, task identification is ensured to be in tight fit with a real metallurgical process state, furnace profile thermal parameters and raw material attributes are introduced to dynamically estimate task thermal loads, and the heat adaptation relation between tasks and equipment is determined; safety load interval limitation is set in the screening task and furnace body combination process, the safety and matching precision of resource allocation are improved, meanwhile, cooling period limitation is embedded in task sorting to recognize delay tasks, scheduling continuity and task connection reasonability are enhanced, the capacity of a scheduling strategy for responding to actual operation constraints is improved, and the service life of the scheduling strategy is prolonged. The overall optimization of accurate task screening, reasonable load distribution and ordered scheduling sequence is realized.

The invention provides an oilless air compressor bearing temperature alarm method and device, and the method comprises the steps: collecting the temperature rise rate, heat flow density and environment parameter data under different working conditions through a miniature thermocouple array in a sealing structure, and obtaining a heat flow characteristic data set; calculating temperature gradient change between adjacent measuring points based on the data set, analyzing a heat accumulation trend by combining geometric characteristics of the sealing structure and thermal physical parameters of a material, and generating a three-dimensional hot spot distribution diagram and heat accumulation rate data; according to the hot spot distribution diagram and the heat accumulation rate data, a sealing structure and bearing system heat path network model is constructed, and the monitoring point position of the potential heat abnormal area of the bearing is determined; and according to the monitoring point arrangement scheme, a temperature monitoring device is installed in a potential heat abnormal area of the bearing, temperature data are collected, heat distribution change characteristics are extracted, and an abnormal heat flow mode in the sealing structure is recognized. The method can accurately capture a bearing local heat abnormal area caused by a sealing structure, and prevents early failure of the bearing caused by a hot spot blind area.

The invention discloses a multi-zone temperature control device of a powder bed for LPBF, and belongs to the technical field of additive manufacturing. According to the temperature control device, four non-contact infrared heaters are arranged on the upper portion of the inner wall of a printing forming bin, and a heating plate formed by splicing a plurality of electric heating blocks is adopted at the bottom of a printing platform for contact heating; multi-zone flexible heating is achieved, independent temperature control can be achieved according to different zone requirements of parts, and the problem that in the prior art, temperature uniformity and zone control are insufficient is solved. The device is provided with an infrared temperature sensor and a thermocouple sensor to monitor the temperature in real time, the heating power is rapidly and accurately adjusted in combination with a PID control algorithm, and the temperature control response speed and precision are improved. The control module is intelligent, strategies can be automatically adjusted according to real-time data, working condition changes are adapted, the intelligent and self-adaptive capacity of the system is improved, and the requirements for modern manufacturing of high-precision and complex parts and the like are met.

The invention provides an inclined variable-angle aircraft interstage separation ground test device. The inclined variable-angle aircraft interstage separation ground test device comprises an aircraft separation device, an angle adjusting device, a temperature control and acquisition device, a vibration control and impact acquisition device, an ignition control device and a device base. The angle adjusting device comprises a device side plate, an arc groove, an angle ruler, a separation mechanism mounting plate, a supporting hinge, a supporting rod, an adjusting sliding rail, an adjusting base, a locking device, a device base gradienter, a rotating bearing and an auxiliary fixing block. The temperature control device comprises a quartz lamp array heating cage, an outer wall temperature control thermocouple and an inner wall temperature acquisition thermocouple, and can simulate a pneumatic heating environment at a separation moment, so that the thermal deformation matching capability of the separation mechanism in a high-temperature environment and the operation reliability of the separation mechanism are obtained. The vibration control and impact acquisition device is composed of a vibration table, a vibration control sensor and an impact sensor.

The invention belongs to the technical field of simulation analysis, and particularly relates to a medium-voltage environment-friendly gas insulation switch cabinet temperature field modeling method, which comprises the following steps: constructing a three-dimensional geometric model of a switch cabinet and carrying out simplification processing; the COMSOL multi-physics field simulation software is imported; electromagnetic-thermal bidirectional coupling modeling is carried out; adding a surface-to-surface radiation physical field; determining a fluid flow state based on a Glassu number, and selecting a corresponding fluid dynamic model; environment conditions are set, and radiant heat exchange power and a convective heat exchange coefficient are calculated; establishing a grid division strategy based on temperature contribution to obtain a simulation model of preliminary modeling; solving and post-processing a solving result, and analyzing hot spot distribution by using a temperature distribution diagram; a thermocouple is installed in a hot spot area in an actual switch cabinet, actual temperature data are obtained through measurement, and the simulation model subjected to preliminary modeling is corrected according to the actual temperature data. The temperature rise condition can be accurately predicted, and a powerful guarantee is provided for safe operation of equipment.

The present invention relates to measuring temperature (t) using a thermocouple (30), with a first measurement point (33) along a positive conductor (31), and a second measurement point (34) along a negative conductor (32). The arrangement is configured to obtain a Seebeck coefficient(S) for the material pair; and to measure a first temperature (t1) in the cold end of the thermocouple (30) at a first measurement point (33); and to measure a second temperature (t2) at a second measurement point (34). Thermal voltages (U1, U2) are measured. The arrangement further calculates a weighted average of the temperature (Tave) by dividing a temperature difference of the first (t1) and second (t2) temperatures with a ratio N=U1 / U2; and calculates temperature (t) in the hot end of the thermocouple (30) based on the obtained Seebeck coefficient(S) for the material pair and the calculated weighted average of the temperature (Tave).

The coal-fired boiler low-load ammonia-doped cracking hydrogen stable combustion system comprises a coal-fired boiler, an ammonia gas generating device, an air premixer and an ammonia gun, the output end of the ammonia gas generating device is connected with the air premixer, the output end of the air premixer is connected with the ammonia gun, and a plurality of ammonia-doped cracking hydrogen modules are sequentially arranged in the middle of the coal-fired boiler. The ammonia-doped hydrogen cracking modules sequentially comprise secondary fans, combustors, ammonia guns and combustors from bottom to top, and the secondary fans are arranged at the upper parts of the ammonia-doped hydrogen cracking modules; the coal-fired boiler is provided with an online oxygen concentration analyzer, a thermocouple temperature sensor, an online hydrogen concentration analyzer, a pressure sensor and a flue gas analyzer which are connected with a controller. According to the invention, the structure of the coal-fired boiler is optimized, the addition amount of ammonia gas is adjusted through the low-load ammonia-doped cracking hydrogen stable combustion method for the coal-fired boiler, and the local oxygen concentration is accurately controlled, so that the overall combustion efficiency and stability are improved, and the emission of nitrogen oxides is reduced.

The invention discloses an on-line temperature monitoring system for a transformer substation, and relates to the technical field of monitoring systems, thermocouples, thermal resistors and infrared sensors, the most suitable sensors are selected according to different equipment and environment conditions, wired Ethernet and wireless communication are supported, data can be stably transmitted under different network conditions, and the temperature monitoring system is suitable for monitoring the temperature of the transformer substation. The monitoring center can display the equipment temperature state, the trend chart and the alarm information in real time, an operator is helped to know the equipment condition in time, when the temperature exceeds a set threshold value, the system can automatically trigger alarm, the user interface module displays data through a chart and graph visualization tool, the information is easier to understand and make decisions, and through comparison with historical data, the information can be displayed more accurately. The system can identify the long-term trend of temperature change, trend analysis helps to find out abnormal problems gradually appearing in advance, and data acquisition and processing, stable data transmission, real-time alarm and monitoring and a historical data comparison model improve the operation safety and stability of the substation equipment.

The invention discloses a test coil heat treatment system and process, and the system comprises a vertical gas furnace which is used for accommodating and heating a test coil; the crucible is arranged in the vertical gas furnace and is used for directly carrying out heat treatment on the test coil; the argon protection control system is connected with the vertical gas furnace and the built-in crucible, provides high-purity argon to replace gas, maintains micro-charging and micro-discharging in the heat treatment process, and controls the temperature in the vertical gas furnace so as to meet the heat treatment of the coil; the argon supply system is used for supplying argon to the vertical gas furnace and the built-in crucible; and the monitoring and control system is used for monitoring and controlling the temperature, the pressure and the flow in the heat treatment process in real time. The temperature control system and the thermocouple are used in cooperation, accurate temperature control over the coil in different stages can be achieved, the heat treatment quality is improved, the argon protection system provides a stable protection atmosphere for the coil through the preheating coil and the flow control valve, oxidation and impurity pollution are effectively prevented, and the corrosion resistance and the electrical performance of the coil are improved.

The invention discloses an industrial silicon smelting process prediction method and system based on data analysis, and relates to the technical field of industrial silicon smelting management and control. The physical structure of the smelting furnace is analyzed, thermocouple nodes are positioned in the virtual three-dimensional model to serve as temperature mapping points, and a spatial topological relation is established; historical smelting data are collected, temperature monitoring parameters and process operation parameters are aligned according to time nodes, and a time-space associated smelting parameter set is constructed; generating a three-dimensional temperature performance state based on the temperature mapping point data, and classifying the temperature performance state through temperature change curve fitting and heat conduction correlation analysis; the current process parameters are matched with the reference historical process operation parameter sequence library in real time, and a three-dimensional temperature field prediction result corresponding to the optimal historical parameter group is output; according to the method, the problems of low efficiency and large error of traditional manual analysis are effectively solved, and reliable technical support is provided for intelligent control of industrial silicon smelting.

The invention relates to the technical field of sensors, and discloses a manufacturing process of an active constant-temperature absolute pressure sensor and a pressure sensor, and the manufacturing process comprises the following steps: carrying out the spin coating of photoresist on a POI silicon substrate; determining doping concentration and depth parameters; injecting monocrystalline silicon ions to form n-type and p-type thermocouples; removing the dielectric layer in the connection region by using an etching process, and exposing the thermocouple pair; forming a thermocouple interconnection line; depositing a metal layer on the surface of the piezoelectric layer, and depositing a dielectric layer to protect the piezoelectric electrode to obtain an upper substrate; manufacturing a dielectric layer, and manufacturing a cavity region to obtain a lower substrate; bonding the upper substrate and the lower substrate, and manufacturing a through hole to expose the thermocouple region; and forming a through hole seed layer, exposing an electrode interconnection pad region, and removing the photoresist. According to the invention, the magnitude / direction of the voltage at the two ends of the thermocouple pair can be controlled through the control circuit, the resonator is heated / cooled, the temperature of the resonator is kept constant, the temperature drift of the resonator is avoided, and the accuracy of air pressure detection is improved.

The invention discloses a distributed SCR (Selective Catalytic Reduction) denitration system and an accurate ammonia spraying control method thereof, and relates to the field of flue gas removal. According to the method, a first collection point, a second collection point and a third collection point are arranged in the distributed SCR denitration system; a thermocouple array, a differential pressure sensor and a flow velocity sensor are respectively arranged at a top airflow inlet, a middle catalyst channel area and a bottom smoke outlet of the catalyst module, so that a disturbance acquisition system covering multiple areas of the tower body is formed, and gas temperature original data, differential pressure original data and flow velocity fluctuation original data are acquired. Feature extraction and normalization preprocessing are carried out on original disturbance data in a control platform to form a standardized disturbance ammonia spraying vector set, so that layered disturbance field perception and ammonia spraying fine control support are realized on the structural level, ammonia spraying configuration redundancy or insufficiency caused by local information loss is avoided, the ammonia water utilization efficiency of each module is improved, and the system performance is improved. And the ammonia spraying accuracy of the whole tower is improved.

The invention discloses an energy conservation and emission reduction system for an annealing furnace, which relates to the technical field of heat treatment, and comprises a target fitting module for performing parameter matching and fitting on a multi-dimensional environment feature vector and an annealing process constraint parameter set to form a heat treatment target function, and performing optimization solution to obtain a target temperature control interval; the control strategy module is used for carrying out multi-target control strategy calculation on the phase change temperature control window information through a heat treatment target function to obtain a dynamic temperature control path in a temperature rise stage; and the execution regulation and control module is used for controlling an annealing furnace heating execution mechanism according to the dynamic temperature control path, adjusting fuel gas input, an air proportion and a flow rate, adopting infrared thermal imaging and a distributed thermocouple to jointly measure the temperature of a temperature zone, obtaining temperature deviation data, carrying out constant-temperature heat preservation and self-adaptive cooling, and generating a multi-section cooling control instruction. Key requirements such as the heating rate, the heat preservation time and the structure property are fully considered, the control precision and the energy efficiency utilization rate of the annealing process are effectively improved, and the energy-saving and emission-reducing effects are remarkable.

The invention discloses a boiler SNCR denitration control method and system capable of automatically adjusting ammonia injection, and relates to the technical field of boiler denitration, the system comprises a reducing agent supply unit, a multi-stage injection unit, a temperature monitoring network, a flue gas analysis monitoring module and a control unit; the reducing agent supply unit consists of a urea solution storage tank, a high-pressure conveying module and a parallel filtering branch; the multi-stage spraying unit comprises a plurality of layers of atomizing spray gun arrays; the temperature monitoring network is provided with a plurality of groups of thermoelectric couples; by means of the control system and the control method, the temperature of flue gas in the boiler can be monitored in real time, opening and closing of the atomization spray gun are controlled through the control system according to the temperature of the flue gas, accurate matching of the ammonia spraying amount is achieved, the denitration efficiency condition is monitored in real time, waste of urea solution consumption is avoided, and the denitration raw material cost is reduced; automatic ammonia spraying adjustment of the boiler SNCR denitration system is achieved, and the situation that the operation cost is increased due to over-spraying of a urea solution is avoided.

The invention relates to the technical field of boiler temperature measurement, and discloses a boiler furnace temperature field measurement system based on multi-sensor fusion. According to a temperature acquisition module of the system, a plurality of groups of infrared temperature measurement sensors and thermocouple sensors are arranged in preset space grids of a boiler hearth, and real-time temperature data of each space grid are synchronously acquired; the data fusion module performs time alignment and space registration on the acquired data to generate a space-time synchronous original temperature data set; the noise suppression module performs multi-scale decomposition on an original data set based on wavelet transform, extracts a high-frequency noise component and performs adaptive filtering, and outputs a temperature data sequence after noise reduction; the temperature field reconstruction module reconstructs a hearth three-dimensional temperature field distribution model through a radial basis function interpolation algorithm according to the denoised data sequence; and the dynamic compensation module calculates the heat conduction lag compensation amount of the temperature field distribution model according to the flowing speed of the flue gas in the hearth and the working condition parameters of the combustor, and generates a compensated dynamic temperature field model.

The invention relates to the technical field of welding of heat energy equipment, in particular to a welding process of miniaturized ultrahigh-temperature heat energy equipment, which comprises the following steps: S1, preparing semi-V-shaped welding grooves for base metal on two sides of a joint by adopting a pipe beveling machine, polishing the grooves and the surface of the base metal, cleaning by using an organic compound, and assembling the to-be-welded joint in a butt joint manner; s2, welding a butt welding seam of the coil pipe and the water cooling wall by adopting manual argon tungsten-arc welding; s3, a thermocouple is fixed to any side of the weld joint, the hot end of the thermocouple is tightly attached to the base metal, the cold end of the thermocouple is connected with a temperature control box, and the interlayer temperature of the weld joint is monitored in real time; s4, when the interlayer temperature is larger than the first temperature, welding is stopped, after a first time interval, a compressed air pipe is used for being matched with an air gun to cool a welding seam and the circumferential direction, and when the layer temperature of the welding seam is reduced to the second temperature, a steel wire brush is used for cleaning the welding seam; and S5, after welding is completed, a welded joint is inspected. The welding device has the beneficial effect that the welding quality and the welding efficiency can be improved.

The invention provides a monolithic integrated multifunctional composite sensor and a preparation method thereof, a single silicon wafer single-sided bulk silicon micro-manufacturing technology is adopted, a first microgroove of a gas flow sensing unit is pre-defined and covered, a pressure reference cavity and a pressure sensitive diaphragm are firstly formed, and then through protection of the first microgroove and a side wall, the gas flow sensing unit and the pressure reference cavity are combined. A monocrystalline silicon thermocouple arm and a heating resistor pattern are pre-defined, then a pressure sensing unit is protected through a heat insulation medium layer, then a heat insulation cavity and a temperature sensing unit are formed, and finally the gas flow sensing unit, the pressure sensing unit and the temperature sensing unit are integrated on the same single chip. The structure that the heat insulation cavity and the pressure reference cavity are located in the same monocrystalline silicon substrate is achieved. According to the method, the traditional double-sided processing technology is replaced, the problem that the small size of the traditional composite chip is difficult to realize is solved, the complex process caused by the traditional silicon-silicon or silicon-glass bonding structure is avoided, the process difficulty and cost are greatly reduced, the yield of the composite chip is improved, and the reliability of the sensor is improved.

The utility model relates to the cable production and detection field, and discloses a hand-held thermodetector used for cable on-line temperature detection, side frames are arranged behind the left side and the right side of a machine body housing, a supporting shaft is installed on the rear side of each side frame, a cable stabilizing wheel is rotatably installed at the rear end of each supporting shaft, an installation seat is installed on the front side of the machine body housing, and a cable is installed on the installation seat. A traditional thermocouple structure is changed into a wire-coil-shaped structure, the machine body shell is designed to be of a handheld structure, and therefore the temperature measuring device is convenient to carry, wire stabilizing wheels are arranged on the left side and the right side of the machine body shell, the top ends of outer rings of the wire stabilizing wheels are located below the top end of a contact disc, and therefore the temperature measuring device is convenient to carry. And the size of the space between the wire stabilizing wheel and the temperature measuring head can be changed as required, so that the outer ring of the core wire can be directly attached to the temperature measuring head, the outer ring and the temperature measuring head are in direct contact, the temperature measuring accuracy is improved, the temperature of the core wire at any part can be detected at any time, and the working efficiency is improved.

The invention discloses a test device and method for measuring residual gas of a coal sample based on a GC double-column method. The device comprises a high-purity hydrogen steel cylinder, a high-purity helium steel cylinder, a vacuum pump containing a vacuum gauge, a computer, and a liquid sealing coal sample tank, a sleeve type gas storage device and a gas chromatograph which are connected in sequence, a first heating thermocouple, an electromagnetic valve and a spherical grinding machine are arranged in the lower layer of the liquid sealing coal sample tank; a pressure gauge, a thermometer and a first flow sensor which are used for measuring gas are arranged at an outlet of the capacity-controllable sleeve type gas storage device; the gas chromatograph is provided with a sampling device, a double chromatographic column device, a double thermal conductivity detector, a second flow sensor and a temperature sensor which are connected in sequence; and a heating device is also arranged in the box body. According to the invention, double gas chromatographic columns and double thermal conductivity detectors are selected, the separation effect and detection effect of each component gas are more excellent, and the subsequently measured wave peak value and wave width are more accurate.

The invention relates to the technical field of intelligent maintenance of heating pipelines, and particularly discloses a heating pipeline residual life prediction and maintenance method based on deep reinforcement learning. Aiming at the problems of limited static modeling, rigid maintenance strategy and insufficient economical efficiency of a traditional life prediction method, a multi-source data fusion and dynamic decision optimization scheme is provided. According to the technical scheme, the method comprises the following steps: deploying an acoustic emission sensor, a thermocouple, a pressure transmitter and an electrochemical probe at key nodes of a pipeline, and collecting real-time data of temperature, pressure and corrosion rate; time sequence statistical characteristics are extracted through a sliding window, and a time-space degradation mode is captured in combination with a CNN-LSTM network; and constructing a deep reinforcement learning model, defining a state space containing real-time sensing data, a residual life prediction value and a historical maintenance record, and designing an action space and a reward function to realize multi-objective optimization of cost, reliability and life benefit. A maintenance strategy is simulated on a digital twin platform, and a long-term optimal decision is generated by combining Monte Carlo tree search.

The invention discloses a gas turbine exhaust temperature control method and device. The traditional gas turbine exhaust temperature control neglects the delay of thermocouple temperature measurement in an exhaust temperature measurement module, on the other hand neglects the impact of thermal stress generated by the temperature change of a thermal channel on parts, and if the limitation is carried out only by a single exhaust temperature maximum value, the strength requirement of the thermal parts of the gas turbine cannot be met. The method comprises the following steps that the gas turbine operation condition is selected, and the exhaust temperature limit value under the current operation condition is determined; according to the performance parameters of the gas turbine under the current working condition, the actually-measured exhaust temperature is obtained through calculation; based on the exhaust temperature limit value and the actually measured exhaust temperature, the exhaust temperature deviation value of the current working condition is calculated; and performing exhaust temperature control according to the relationship between the exhaust temperature deviation value and the reference value. The method is applied to gas turbine exhaust temperature control.

The invention discloses a temperature control method, an annealing furnace temperature control system, a computer storage medium and a program product, the temperature control method is applied to an annealing furnace, a plurality of process sections are arranged in the annealing furnace, each process section comprises a plurality of control areas, and each control area is provided with a thermocouple; a pyrometer is arranged at the outlet of each process section; the temperature control method comprises the steps that it is determined that the movement speed of strip steel is decreased and exceeds a set speed threshold value within set time; the actual strip steel temperature, measured by each pyrometer, of the outlet of the corresponding process section is obtained; increasing and decreasing the target temperature of each control area according to the actual temperature of the strip steel and the target temperature of the strip steel at the outlet of each process section; acquiring the actual temperature of the control area measured by the thermocouple; and correcting the actual temperature of the control area according to the actual temperature of the control area and the corresponding target temperature of the control area. Abnormal rise of the furnace temperature caused by rapid speed reduction of the strip steel can be avoided, so that the influence on the production quality of the strip steel is reduced.

The utility model discloses a regeneration device for a supported noble metal catalyst, which comprises a catalyst washing tank, a liquid outlet pipe, a stirring component, a feeding pipe, a nitrogen feeding pipe and a conveying pipe are respectively mounted on the catalyst washing tank, and a vacuumizer is mounted on the nitrogen feeding pipe; the regeneration reactor is arranged on the lower side of the catalyst washing tank, a feeding pipe and a discharging pipe are installed on the regeneration reactor, the periphery of the regeneration reactor is sleeved with a first heater, and a plurality of temperature measuring thermocouples are installed on the outer wall of the regeneration reactor; the nitrogen purging reactor is connected with a nitrogen conveying pipe, the feeding pipe and the nitrogen conveying pipe are combined and then are communicated with the feeding pipe, and a second heater is mounted on the nitrogen conveying pipe; the controller is connected with the stirring assembly, the vacuumizer, the regeneration reactor, the first heater and the second heater in a wireless or wired mode and controls the stirring assembly, the vacuumizer, the regeneration reactor, the first heater and the second heater, and the temperature measuring thermocouple is connected with the controller for data interaction.

The invention discloses a laser additive manufacturing system and method for in-situ self-adaptive regulation and control of the component shape through a temperature field and an airflow field. The laser additive manufacturing system comprises a sealed protection cavity, a master control unit, a temperature field monitoring-control unit and an airflow field monitoring-control unit. The temperature field monitoring-control unit comprises an infrared thermometer, a thermocouple temperature measuring element and an induction heating coil; and the airflow field monitoring-control unit comprises a protective gas pipeline, an electromagnetic flow regulating valve, an oxygen content monitor and a vacuum air filter. The master control unit comprises a temperature field control module and an airflow field control module. The master control unit conducts in-situ self-adaptive regulation and control on the temperature field of laser additive manufacturing through the temperature field control module, distribution of the temperature field in the whole process of additive manufacturing is improved, the temperature gradient of a molten pool in the laser additive manufacturing process is reduced, the forming defect is improved, and the material performance is improved.

The invention provides a cladding lithium lead heat source loop intermittent temperature maintaining system and a control method, and belongs to the field of fusion reactor temperature control systems, and the cladding lithium lead heat source loop intermittent temperature maintaining system comprises a cladding lithium lead heat source inlet and outlet branch, a lithium lead heat source utilization branch, a heating branch and a control loop; the lithium-lead heat source utilization branch and the heating branch are connected in parallel to an outlet of a lithium-lead heat source lower connecting pipe of the cladding lithium-lead heat source inlet and outlet branch; the heating branch comprises a third valve, an electric heater and a second pump which are connected in sequence; an outlet of the second pump is respectively connected to the first valve on the cladding lithium lead heat source inlet and outlet branch and the second valve on the lithium lead heat source utilization branch; and the control loop comprises a plurality of thermocouples and a flow meter, and is used for monitoring the temperature and the flow of each position for cooperatively realizing the intermittent temperature maintenance of the cladding lithium lead heat source loop and controlling the start and stop or the opening degree of the first valve, the second valve, the third valve, the electric heater and the second pump. The solidification risk of the lithium-lead medium is overcome, and the safety of the system is improved.