1678 results about "Thermoscope" patented technology

The invention relates to a grid steel structure node failure diffusion prediction method, which comprises the following steps of: forming a failure inducement and evolution path model according to a connection form of a bolt-sphere node and a welding node, a stress transfer path, node local yield and fatigue accumulation factors; a diffusion logic of node failure-force flow redistribution-adjacent node stress concentration-chain reaction is constructed; nodes are regarded as middle points of the graph, rod pieces are regarded as edges, and propagation weights between the nodes are defined; the weight parameters are dynamically assigned based on material attributes, node connection types, spatial geometric positions and historical stress states; multi-source monitoring sensors including strain gauges, displacement meters, thermometers and accelerometers are arranged at key nodes of the grid structure, so that node states are sensed; in combination with real-time monitoring data, extracting strain rate change, vibration characteristics, frequency drift and residual deformation key characteristics of each node; a node health state feature vector set is constructed by using time sequence analysis, and the gradual degradation trend of nodes is reflected.

The invention relates to the technical field of spraying process control, and discloses a spraying process self-adaptive adjustment method based on temperature measurement. The method comprises the steps that target coating parameters and base material physical property data are obtained, and initial spraying control parameters are generated through a first intelligent calculation model in combination with historical process data and real-time environment monitoring data; when spraying is executed, heat distribution data of a spraying area are collected in real time through a temperature sensing device, and according to the difference between the heat distribution data and a preset target temperature interval, technological parameters are dynamically corrected through a first self-adaptive regulation and control algorithm; meanwhile, a machine vision system is used for capturing actual coating morphological characteristics, and after the actual coating morphological characteristics are compared with target parameters, excitation parameters are adjusted in a partitioned mode through a second self-adaptive regulation and control algorithm so as to optimize uniformity; and collecting whole-process data, comprehensively evaluating the whole-process data through the second intelligent calculation model to generate a process optimization instruction, and updating the first intelligent calculation model and the first self-adaptive regulation and control algorithm parameters according to the process optimization instruction.

The invention discloses an assembly type refrigerating machine room energy-saving monitoring system based on data analysis, and relates to the technical field of energy-saving control, and the system comprises an interval module which is used for dividing the space of a machine room into a plurality of monitoring intervals, and is bound with a structural unit; the excitation module is used for applying power disturbance to the structural unit to obtain structural excitation data; the identification module is used for generating a heat influence coefficient matrix according to the excitation data and the temperature change of the adjacent monitoring interval; and the calculation module is used for calculating a blind area temperature and outputting an estimated temperature and a covariance based on the heat influence coefficient matrix, the structure energy consumption data and the adjacent interval temperature. According to the invention, the space of the machine room is subjected to three-dimensional grid division through the interval module, and each monitoring interval is bound with the function nodes in the structure of the machine room, so that the temperature monitoring grid with the corresponding relation between the space and the structure is formed, the space expression precision of monitoring data is improved, and the monitoring efficiency is improved. And a structural support is provided for positioning and temperature compensation of a blind area position.

The invention relates to the technical field of temperature control valve fault detection based on big data analysis, and discloses a temperature control valve fault detection method based on big data analysis. Acquiring and cleaning temperature data according to a set sampling interval; calculating a temperature difference in combination with a set temperature and verifying a baseline period sample; extracting a maximum temperature difference, a minimum temperature difference and an envelope width by using a sliding window in the baseline period, and determining a compensation constant; calculating a baseline oscillation coefficient and statistical characteristics based on window analysis; continuously extracting real-time oscillation coefficients during operation; dynamically generating a time-varying threshold value according to historical characteristics and real-time parameters; and comparing the real-time coefficient with a threshold value to judge a fault and generate a structured log, and finally uploading the structured log to a big data platform. Through systematic data preprocessing, multi-scale feature extraction and dynamic threshold adjustment, the method overcomes missing report and false report under the influence of a fixed threshold and noise, and realizes online closed-loop automatic fault early warning and log management.

The invention discloses a rolled piece temperature control system based on a steel rolling process, which relates to the technical field of steel rolling and comprises a detection module, a control module, an execution module and a cooling module, the detection module comprises infrared thermometer arrays, an ultrasonic thickness gauge, an electromagnetic flowmeter, a pressure transmitter and a thermal resistance thermometer, and the infrared thermometer arrays are used for being arranged in front of and behind a cooling section and respectively collecting initial temperatures before entering a cooling system. Through the self-adaptive PID algorithm, the finite difference heat conduction model and the Smith pre-estimation compensation strategy are combined, the problem of control delay caused by the large lag characteristic in the cooling process is solved, control parameters can be dynamically adjusted according to the rolling speed, the steel grade characteristic and the like, temperature adjustment better fits the actual working condition, and the control precision is improved. The phenomenon of supercooling or insufficient cooling in a traditional control mode is fundamentally avoided, and the uniformity and stability of the performance of rolled pieces are guaranteed.

Provided is a temperature measurement device for, in a situation where the temperature of a silicon wafer which is a measurement target is indirectly measured, removing, from actually measured radiance, the effects of radiance coming from a chamber member, and calculating the amount of change in the temperature of the measurement target. The temperature measurement device comprises: a chamber for accommodating a measurement target object; a heating unit; a chamber window at a position in the chamber opposite from the measurement target object; a temperature measurement unit for measuring the temperature of the measurement target object and the chamber window; and a computation unit for calculating the temperature of the measurement target object from detected values of the temperature measurement unit. The computation unit is provided with: a conversion unit for generating, from actually measured temperatures calculated from the detected values of the temperature measurement unit, conversion data pertaining to the amount of change in the temperature of the measurement target object corresponding to the amount of change in the temperature of the chamber window; a condition acquisition unit for acquiring a condition under which the measurement target object is heated; a detected value acquisition unit for acquiring a detected value of the temperature measurement unit; and a temperature correction unit for estimating the temperature of the measurement target object by using the conversion data to correct an actually measured temperature calculated from the detected value of the temperature measurement unit.

The invention discloses a diaphragm valve flow test system and method, and the system comprises a first test assembly and a second test assembly, and a first pressure measurement port of the first test assembly and a second pressure measurement port of the second test assembly are respectively communicated with a to-be-tested valve; a first test pipeline communicated with the first test assembly is provided with a circulation path in a first direction; a second testing pipeline communicated with the second testing assembly is provided with a circulation path in the first direction. The upstream and downstream pressure values of the to-be-tested valve can be accurately detected through the first pressure gauge and the second pressure gauge, and the gas flow value is detected through the flow meter and substituted into a calculation formula to obtain an accurate flow coefficient value; the upstream first testing assembly and the downstream pressure measuring device are arranged at a specific distance according to the pipe diameter of the communicating pipeline, and the accuracy of the pressure value can be effectively ensured through the limitation of the pipe diameter and the distance; the actual temperature value of the fluid in the test system pipeline is monitored through the thermometer, and the influence of the temperature on the test result is effectively reduced.

The invention discloses a temperature and emissivity joint inversion method for multispectral temperature measurement, and relates to the field of non-contact temperature measurement of high-temperature targets. In order to solve the defect that in the prior art, combined inversion of the emissivity cannot be realized under the condition that the emissivity does not need to be known in advance, the technical scheme provided by the invention comprises the following steps: establishing a multispectral temperature measurement model, constructing a temperature calculation model under each channel, and outputting a plurality of sub-objective functions for optimization; constructing a weighted objective function used for optimization solution; outputting a global optimal solution as an initial point; constructing an optimization model with a penalty function, and outputting the target temperature and the spectral emissivity; and performing simulation verification based on the inversion result, performing error evaluation by setting a typical emissivity curve and a real temperature, and outputting an algorithm precision index. The method is suitable for non-contact high-precision temperature and emissivity combined measurement of a high-temperature target in a complex spectrum environment.

The utility model relates to a quantitative testing device for fly ash ammonia nitrogen substances, and relates to the field of fly ash detection devices. The device comprises a material containing box, a material containing container and an ammonia gas detector, the bottom face of the material containing box is provided with an opening, a material supporting piece is arranged at the opening of the material containing box, the vertical end face of one side of the material containing box is communicated with a gas inlet piece, a plurality of heating resistors are vertically fixed to the inner wall of the material containing box, and an electronic thermometer is fixed to the front end face of the material containing box; a gas guide pipe is vertically communicated and fixed to the top surface of the material containing box, a gas pump is communicated and assembled to the gas guide pipe, an absorption solution is injected into the material containing container, and an ammonia gas sensitive electrode is fixed to the top surface of the material containing container in a manner that the absorption solution is inserted into the top surface of the material containing container. The influence of the temperature on the concentration rule of ammonia volatilization is detected by adjusting the temperature, the influence of the ammonia on the concrete can be detected in the later period, meanwhile, the amount of the denitration fly ash added into the concrete is selected according to the measured ammonia concentration, and therefore the environmental protection property and durability of the concrete are guaranteed.

A food thermometer includes a tip portion and an outer shell including a minimum food insertion depth indicator visible on an exterior of the outer shell. A thermal barrier member is located inside the outer shell along a center virtual axis defined by the outer shell at or adjacent a projected position of the minimum food insertion depth indicator on the virtual axis, or closer to the tip portion than the orthogonally projected position of the minimum food insertion depth indicator. In another aspect, a food thermometer includes a first portion and a second portion connected to the first portion. A third portion connected to the second portion includes an antenna. A thermal barrier member is located in at least one of the first portion and the second portion to thermally insulate the interior of the first portion from at least a portion of the interior of the second portion.

The invention provides an SNCR (selective non-catalytic reduction) intelligent denitration system based on a sound sensing technology, and relates to the technical field of flue gas denitration. The hearth temperature calculation module sequentially sounds and receives the multiple sound wave signal flows, multiple hearth path temperatures are obtained through calculation and uploaded to the central processing unit through the temperature field reconstruction module, and a hearth combustion temperature field graph is generated through calculation; the denitration strategy control module is used for matching and analyzing a denitration strategy according to the hearth combustion temperature field graph and determining target denitration control strategy parameters; and the feedback optimization module adopts the parameters to execute denitration control operation, and regulates and updates target denitration control strategy parameters according to the denitration effect. The technical problem that SNCR denitration control is difficult to accurately match with the optimal reaction zone due to low temperature measurement means precision and insufficient spatial resolution in the prior art is solved, the SNCR denitration efficiency is improved, and ammonia escape is reduced.

The invention discloses a high-precision R-2R voltage type digital-to-analog converter based on a binary weighted code and a thermometer code, the digital-to-analog converter comprises a weighted resistance network, a thermometer decoder circuit and an operational amplifier module with a self-calibration function, the output of the weighted resistance network is connected with the operational amplifier module with the self-calibration function, and the output of the thermometer decoder circuit is connected with the operational amplifier module with the self-calibration function. The output of the thermometer decoder circuit is connected with a thermometer code part of the weighted resistance network, an external clock CLK signal and a common-mode voltage serve as input signals of the operational amplifier module with the self-calibration function, and an output signal of the weighted resistance network passes through the operational amplifier module with the self-calibration function to obtain final analog voltage output. The resistance network adopts a mixture of thermometer codes and an R-2R structure, static indexes of the DAC can be effectively optimized, the impedance matching problem of the resistance network is reduced, a self-calibration operational amplifier technology is further applied, the influence of offset voltage of an operational amplifier on output precision can be eliminated, and the output driving capacity of the DAC is improved.

The embodiment of the invention provides a calculation method and device for boundary parameters of a supercritical fluid heat exchanger, computer equipment and a medium, and relates to the technical field of fluid mechanics and heat transfer science calculation.The method comprises the following steps that design parameters and target working conditions of the heat exchanger are obtained; calculating to obtain the single section length of each infinitesimal section; based on the initial inlet pressure guess value, according to the length of the single section and the pressure and the temperature of the infinitesimal section i, the pressure and the temperature of the infinitesimal section i + 1 are obtained through calculation, the difference value between the outlet calculation pressure and the target outlet pressure is calculated, and the difference value serves as a pressure error; if the pressure error is greater than the convergence tolerance, updating the inlet pressure guess value by adopting a numerical iteration method, and performing iteration again based on the inlet pressure guess value after iteration; otherwise, iteration is terminated, and the final inlet pressure value and the final outlet temperature value are output. According to the scheme, the calculation efficiency and accuracy of solving the inlet pressure and the outlet temperature of the supercritical fluid heat exchanger under the given target outlet pressure are improved.

The invention discloses a carbon dioxide formation leakage monitoring device and method based on distributed optical fiber sensing. The device comprises a simulated formation, an injection system and a DTS system. A thermal insulation device, a thermometer and a production well system are mounted on the simulated stratum; the injection system is used for injecting carbon dioxide and liquid into the simulated stratum; the DTS system comprises a light source assembly, an optical fiber group, a detection assembly and a data acquisition and processing unit which are connected in sequence; a plurality of monitoring points of the optical fiber group are arranged, and the plurality of monitoring points are arranged in the simulated stratum at intervals; the detection assembly is used for detecting Rayleigh scattering frequency shift and Rayleigh backscattering light intensity and phase in the optical fiber group, and the data acquisition and processing unit is used for acquiring signals output by the detection assembly and performing data processing and analysis. According to the invention, fine monitoring and continuous monitoring of carbon dioxide stratum leakage can be realized, the environmental interference resistance is high, and the installation and maintenance cost is low.

The invention relates to the technical field of constant-temperature stirring equipment control, in particular to a temperature control method of a constant-temperature stirrer, which comprises the following steps of: calculating an instantaneous deviation array between real-time temperatures of multiple monitoring points in a heating container and a target temperature by acquiring the real-time temperatures; and a maximum value, a minimum value and a mean value are extracted to construct a divergence characteristic triple representing the temperature distribution state. Meanwhile, the running current waveform and the real-time rotating speed of the stirring motor are associated, and a load disturbance characteristic curve is generated. And synchronously inputting the instantaneous temperature deviation array, the divergence characteristic triple and the load disturbance characteristic curve into a temperature compensation depth prediction network, and outputting a heater duty ratio sequence and a stirring motor speed regulation instruction sequence in a plurality of control periods in the future by the network. The method can actively sense the uniformity of the internal temperature field and quantify the dynamic disturbance of the stirring load, thereby improving the temperature control uniformity and the anti-interference capability of the system.

The invention relates to a temperature control system and method for grinding fluid supply equipment. The temperature control system comprises a main pipeline, a temperature controller, a relay control unit, a PLC and a PC terminal. The main pipeline is connected with a pipeline of grinding fluid supply equipment and is of a flat structure, and a flowmeter and a thermometer are arranged at the front end and the rear end of the main pipeline respectively. The temperature controller comprises a semiconductor arranged on the main pipeline, heat dissipation fins arranged on the semiconductor and a modular fan arranged on the heat dissipation fins. The relay control unit is connected with the temperature controller, the PLC is connected with the flowmeter and the thermometer, and the PC terminal is connected with the relay control unit and the PLC. A traditional capillary tube is replaced by the main pipeline of the flat structure, the semiconductor is adopted as a cooling medium, and the air cooling mode of the modular fan and the cooling fins is combined, so that the phenomenon that the purity is damaged due to direct contact of cooling water and grinding liquid is avoided, and the heat exchange efficiency is improved by increasing the contact area of the main pipeline and the semiconductor.

The invention provides a multi-tube ECRH system thermal load management method based on low-power basic operation, and belongs to the field of electron cyclotron resonance heating systems. When the target total power and the operation duration are received, a time period is judged, one gyrotron is dispatched in turn as a rest gyrotron, and the other gyrotrons are dispatched as working gyrotrons; the method comprises the following steps: periodically collecting the operation power and the collector temperature of each gyrotron, calculating the accumulated thermal load of each gyrotron, calculating the thermal load relative deviation of each gyrotron based on the average thermal load of all gyrotrons at the end of each time window, marking the gyrotron with the thermal load relative deviation exceeding a threshold value as a gyrotron to be adjusted, and adjusting the gyrotron to be adjusted according to the thermal load relative deviation. According to the thermal load relative deviation of the gyrotron to be adjusted, the adjustment amount is calculated, the operation power of the gyrotron to be adjusted is adjusted, and the operation power of all the working tubes is dynamically adjusted; the invention further provides a thermal load management system. And the contradiction between quick response and heat management and between power stability and heat balance is broken through.

The invention provides a thermometer multi-point temperature measurement and fluctuation analysis method, and relates to the technical field of data processing, and the method comprises the steps: dividing adjacent temperature measurement positions into continuous position groups, pairing temperature values in each continuous position group into a combined record, recognizing the size relation and the change amplitude range of the temperature values in each combined record, and determining the temperature values in each combined record; calculating the change intensity degree of the combination of adjacent temperature measurement positions to obtain a combination fluctuation value, dividing a continuous interval in which the combination fluctuation value is kept consistent in the numerical value change direction into independent sections, calculating the overall fluctuation aggregation degree of the independent sections to obtain an aggregation intensity value, and calculating the overall fluctuation aggregation degree of the independent sections; and selecting a chain segment of which the aggregation intensity value reaches a preset aggregation threshold value from each chain structure, marking the temperature measurement position of the chain segment as a fluctuation region, and analyzing the fluctuation distribution form and the fluctuation expansion range of each fluctuation region to obtain analysis result data. The spatial structure expression of the temperature data can be realized, and the situation that the temperature fluctuation of multiple measuring points cannot be captured at the same time is avoided.

The invention discloses a temperature calibration device capable of tracing to second definition and a temperature calibration method, and belongs to the field of temperature measurement and quantum precision measurement. The inner walls of a blackbody radiation reference shielding cavity and a blackbody radiation measurement shielding cavity in the device are blackened and are independently arranged in a vacuum cavity; the pulse tube refrigerator is connected with the blackbody radiation reference shielding cavity, the fourth-order Peltier is connected with the blackbody radiation measurement shielding cavity, one end of the high-heat-resistance quartz tube is arranged in the blackbody radiation measurement shielding cavity, and the other end of the high-heat-resistance quartz tube is arranged outside the vacuum cavity. And a platinum resistance thermometer to be calibrated is arranged in the high-heat-resistance quartz tube and is in close contact with the blackbody radiation measurement shielding cavity. The problem that in the prior art, the absolute uncertainty of a temperature calibration result at the room temperature is too high, and the requirement for high-precision measurement is difficult to meet can be solved.

The invention relates to the technical field of high-precision thermometer calibration, in particular to a high-precision thermometer calibration device based on a low-temperature loop heat pipe. Comprising a vacuum cover, an evaporator, a soaking block, a refrigerator and a flexible pipe, a first-stage cold shield, a second-stage cold shield and a third-stage cold shield are arranged in the vacuum cover from outside to inside; the upper end of the evaporator is communicated with the gas storage tank; the soaking block is arranged in the third-stage cold shield, a low-temperature loop heat pipe is embedded in the soaking block, the low-temperature loop heat pipe is connected with the evaporator and the liquid storage device through pipelines to form a closed loop, and the soaking block is provided with an installation structure used for fixing a platinum resistance thermometer; a cold head of the refrigerating machine extends into the vacuum cover; one end of the flexible pipe is connected with the cold head, and the other end is connected with the soaking block for transferring cold energy and isolating vibration. According to the invention, rapid and stable heat conduction of the soaking block is realized, the calibration accuracy of the high-precision thermometer in a low-temperature environment is improved, and the problem of measurement stability caused by temperature fluctuation is solved.

The invention relates to the technical field of automatic temperature calibration. The invention relates to an automatic temperature calibration method for temperature measuring equipment. The method comprises the following steps: S1, collecting historical temperature calibration records, and setting a temperature floating threshold value for each type of measured object; s2, measuring the temperature value of the object by using the NTC group, performing stable detection on multiple groups of temperature values in combination with a temperature floating threshold, and then measuring the resistance value of the NTC group with the stable temperature value; s3, obtaining standard resistance specification information of the NTC group, and then performing deviation calculation on the real-time resistance value and the standard resistance value; according to the method, aiming at the problem of temperature measurement difference caused by precision specifications of B and R values of the NTC element, a segmented compensation resistance method is utilized, the deviation between NTC resistance values and a standard resistance value at different temperature points is actually measured, a deviation array is constructed, and a temperature calculation program is imported, so that a measurement error caused by element difference is effectively compensated, and a measurement result is closer to a real temperature.

The invention relates to a joint regulation and control method, device and equipment for a temperature control valve and a fan in a fuel cell thermal management system and a storage medium. The joint regulation and control method comprises the following steps: acquiring a water pump rotating speed, a preset water pump characteristic curve, a first preset pipeline total flow and a first preset temperature control valve opening degree; determining the flow of each branch distributed under the rotating speed of the water pump and the opening degree of the first preset temperature control valve; according to the first flow flowing through the PTC branch, the second flow flowing through the radiator branch, the obtained first outlet temperature of the PTC and the obtained first inlet target temperature of an electric pile, the rotating speed of the water pump and the first outlet water temperature, corresponding to the opening degree of the first preset temperature control valve, of the radiator are calculated; according to the method, the water pump rotating speed and the first rotating speed and the first power consumption of the fan under the first preset temperature control valve opening degree are obtained according to the preset temperature control valve opening degree, the target power consumption is determined, the temperature control valve and the fan are jointly regulated, and the problems that power consumption is large and temperature control is unstable due to the fact that the fan and the temperature control valve are controlled separately in the related technology are solved.

One or more implementations of the present disclosure relate to a wireless, multi-sensor food thermometer that includes a temperature probe having a linear array of temperature sensors that are operative to measure: temperature profiles within a food product during a cooking process, a temperature at a core of the food product, a temperature at the surface of the food product, and a temperature of the ambient cooking environment in which the food is being cooked. The temperature probe includes a wireless interface that transmits temperature information to one or more external devices for use thereby. Rather than transmitting raw temperature data, the temperature probe may transmit coefficients that correspond to a function that describes the temperature profile within the food or parameters necessary to solve a governing heat equation, which reduces data transmission requirements and reduces power consumption. The food thermometer may include a charger case that houses the temperature probe and charges a power source of the temperature probe using a replaceable battery.

The invention relates to the technical field of blister thermoforming, and discloses a high-precision controllable thermoforming method of a blister machine, which comprises the following steps: extracting a feature recognition material type, and calculating to obtain a thermal diffusion coefficient; a temperature field is collected in real time, temperature distribution at the next moment is predicted, a fuzzy rule base is established to dynamically adjust PID parameters, a falling risk coefficient is calculated based on the actually measured temperature, and whether airflow compensation is started or not is judged; a mold cavity structure is constructed, and a vacuum degree curve is set in stages; material flow monitoring is conducted on the material, and the vacuum degree is corrected through fuzzy control; analyzing to obtain a coordinate deviation, and executing dynamic compensation; performing real-time correction according to the coordinate deviation, establishing an inter-station coupling coefficient matrix through multi-station cooperative control, and performing temperature compensation; and constructing a multi-dimensional quality evaluation model, performing analysis to obtain a comprehensive quality index, judging whether to trigger a key parameter optimization process or not based on the comprehensive quality index, and performing real-time feedback optimization.

The utility model relates to the technical field of solid-liquid reaction kettles, in particular to a solid-liquid reaction kettle system with cooling and heating functions, which comprises a reaction kettle body, a stirring cavity is formed in the reaction kettle body, and a heat preservation jacket is sleeved outside the reaction kettle body. A heat preservation cavity is formed between the heat preservation jacket and the reaction kettle body, an electric heating pipe attached to the outer wall face of the reaction kettle body is arranged in the heat preservation cavity, and a cooling water inlet, a cooling water outlet and a jacket temperature measuring opening are formed in the heat preservation jacket; the cooling water inlet, the cooling water outlet and the jacket temperature measuring opening are all communicated with the heat preservation cavity, a cooling mechanism is arranged between the cooling water inlet and the cooling water outlet, and the jacket temperature measuring opening is used for installing a thermometer; the solid-liquid reaction kettle can solve the technical problem that a solid-liquid reaction kettle in the prior art is insufficient in temperature control and cooling mechanism.

The invention relates to a rotary valve electric heating device and a control method. The control method of the rotary valve electric heating device comprises the steps that a first temperature signal of an electric heating plate and a second temperature signal of a rotary valve are obtained; filtering the first temperature signal and the second temperature signal to obtain a first filtering temperature and a second filtering temperature, and calculating a corresponding temperature difference value according to the first filtering temperature and the second filtering temperature; judging that the second filtering temperature is lower than a lower limit threshold of a preset target temperature interval, and judging that the second filtering temperature is higher than an upper limit threshold of the preset target temperature interval; judging whether the temperature difference value exceeds a temperature difference threshold, and judging whether the first filtering temperature exceeds a safety upper limit temperature; and switching on the power supply of the electric heating plate and switching off the power supply of the electric heating plate. The precision of temperature regulation and control is guaranteed, the temperature of the rotary valve shell is close to the process requirement range, and the stability and safety of the operation process are improved.

The invention relates to the technical field of circulating fluidized bed flue gas desulfurization, and discloses an automatic control system applied to a CFB desulfurization digester. The feeding unit is used for conveying quick lime and comprises a quick lime bin, a screw feeder and a belt conveying scale which are connected in sequence, and the belt conveying scale is in signal connection with the digestion automatic controller; the digestion reaction unit comprises a three-stage digester and a plurality of digestion thermometers arranged in the three-stage digester, and the digestion thermometers are in signal connection with the digestion automatic controller. The water-cement ratio is dynamically adjusted by monitoring the temperature change trend in real time, fluctuation of the quality of quick lime can be automatically adapted, and the limitation of fixed water-cement ratio control is overcome; by searching the optimal water-cement ratio, the full digestion of the quick lime is ensured, and the activity and uniformity of the slaked lime product are improved; and moreover, the dependence on artificial experience is reduced through automatic control, and the stability and continuity of system operation are improved.

The invention discloses a preparation method and application of a high-thermal-conductivity liquid metal gallium-indium-tin alloy, and relates to the technical field of gallium-indium-tin alloys, the high-thermal-conductivity liquid metal gallium-indium-tin alloy is prepared by weighing the following components in percentage by weight: 65-80% of gallium, 15-25% of indium, 3-10% of tin, 0.1-2% of trace element combination X and 0.05-1% of Y, and the purity of the gallium, the purity of the indium and the purity of the tin are greater than or equal to 99.99%, and the X is one or two of antimony and bismuth; y is one or two of zinc and copper; the raw materials are heated to 120-200 DEG C, so that the raw materials are completely molten into a liquid state; the molten liquid metal is subjected to magnetic field auxiliary stirring, and evenly-mixed alloy liquid is formed; and cooling the alloy liquid to room temperature in a vacuum or inert gas environment. The temperature sensing medium has the advantages that by synergistically adding antimony, bismuth, zinc, copper and other trace elements, the temperature sensing medium can be simultaneously used as a core temperature sensing medium of an expansion type thermometer and a resistance type thermometer, and the temperature sensing medium has high precision, wide temperature range and environmental friendliness.

The present invention provides a skid-mounted device and method for generating electricity using the pressure differential of high-pressure natural gas in oil and gas fields. The device relates to natural gas gathering and transportation technology. The device includes a thermometer for detecting the temperature of the high-pressure natural gas at the wellhead, an expansion generator connected to the rear end of the thermometer, and a heat exchange tube assembly located within a heating furnace. The pipeline between the thermometer and the expansion generator is provided with valves a located at the rear end of the thermometer and valve c located at the front end of the expansion generator. The rear end of the expansion generator is connected to a pressure-reducing natural gas transmission pipeline b and an external power transmission cable. Valve b is provided on the pipeline between the thermometer and the inlet end of the heat exchange tube assembly. The outlet end of the heat exchange tube assembly is connected to the pipeline behind valve a. The pipeline between valves a and c is connected to a pressure-reducing natural gas transmission pipeline a. Valve d and a pressure regulating valve are provided on the pressure-reducing natural gas transmission pipeline a. The present invention can reduce the pressure of high-pressure natural gas and fully recover the pressure energy of the high-pressure natural gas.

In an embodiment of the invention, a sensor suite for an autonomous robotic kitchen system includes a thermometer, a sensor suite housing, a sensing chamber within the sensor suite housing having an intake port and an output port, at least one fan configured to control flow of gas through the sensing chamber, and a plurality of gas sensors mounted within the sensing chamber.