587 results about "Temperature drop" patented technology

The invention provides a multi-protocol compatible pole charging safety state sensing and early warning system, and relates to the technical field of pole charging safety state sensing. The data acquisition module acquires component data and environment data of the electrode charging system; the pole charging strategy generation module outputs a pole charging strategy; the electrode charging temperature rise prediction module outputs a temperature prediction curve of an electrode charging system component; the liquid cooling calculation module outputs an electrode charging system component temperature drop curve; the theoretical temperature obtaining module obtains the theoretical electrode charging system component temperature. The safety state sensing module judges whether the electrode charging process is safe or not. According to the invention, the technical barrier is broken through the multi-protocol compatibility, and the construction and operation cost of the polar charging network is reduced; through precise temperature control and active early warning, the worry of a user on pole charging safety is solved, the acceptance of a consumption end is improved, obstacles are cleared away for popularization of a high-power pole charging technology, the power-assisted electric two-wheeled vehicle industry breaks through the charging efficiency bottleneck, the target of faster and safer charging is accelerated, and the method has remarkable technical value and industrial significance.

A liquid immersion cooling system, that cools a heat generating body provided on a substrate, includes: a cooling device main body having a casing that houses the substrate and the heat generating body inside and stores a refrigerant for cooling the heat generating body; a circulation flow channel having both ends connected to each other in a communication state in the casing; an adsorption unit that is provided in the circulation flow channel and adsorbs impurities from the refrigerant circulating in the circulation flow channel; a pump that circulates the refrigerant in the circulation flow channel; and a control device that controls the pump. The control device includes a temperature drop detection unit that detects a decrease in temperature of the refrigerant in the casing, and a pump drive unit that drives the pump based on a detection of the temperature drop detection unit.

The invention discloses a molten drop arc-laser induced additive and subtractive integrated manufacturing system and method. The method comprises the steps that raw materials are heated through one or more energy sources to form molten drops; multiple kinds of energy are synchronously applied to molten drops to form a composite molten pool, in-situ coupling of additive and subtractive materials is achieved, and material removal is conducted on a cladding layer while material adding is conducted in the composite molten pool; dynamically adjusting the energy ratio and spatial-temporal distribution of each energy field, and optimizing the droplet transition and metallurgical quality; when the temperature of the cladding layer is reduced to a solid-liquid mixing interval or a thermoplastic deformation interval, shaping and surface processing are carried out, and the ideal component shape and surface smoothness are achieved; energy field parameters are dynamically adjusted based on real-time feedback of multi-sensor data, residual stress is inhibited in combination with a heating compensation technology, the heating compensation technology is used for effectively controlling heat input and stress release, and it is ensured that the stress state of a component in the manufacturing process is effectively managed.

The invention relates to the technical field of circulating water anti-freezing, and discloses a power plant circulating water anti-freezing system suitable for a cold region, and the system comprises a temperature sensing module, an anti-freezing heating module, a water flow disturbance module, an ice layer processing module, an intelligent regulation and control center and a fault safety module; when the circulating water system of the power plant operates in a cold region, the internal water temperature and external environment parameters of key nodes of a circulating water pipe network are monitored in real time, and a low-temperature early warning signal is generated based on a temperature field reconstruction algorithm of machine learning, so that abnormal temperature fluctuation can be recognized in time, early warning delay and false alarm caused by wind speed and humidity interference are avoided, and the working efficiency is improved. And in the circulating water anti-freezing process, the output power of the flexible electric heating body is dynamically adjusted through a graded heating mechanism, and the turbulence generator is linked to optimize water flow distribution, adapt to thermal inertia change of a pipeline and prevent the risk of local icing caused by sudden temperature drop.

The present invention relates to the field of metal materials and provides acid-resistant pipeline steel and a manufacturing method therefor. The chemical components of the acid-resistant pipeline steel comprise, in percentage by weight: 0.02-0.06% of C, 0.10-0.30% of Si, 0.80-1.10% of Mn, 0.02-0.08% of Nb, 0.06-0.12% of V, 0.20-0.30% of Ni, Mo ≤ 0.08%, 0.03-0.06% of Al, 0.0005-0.0030% of Ca, P ≤ 0.008%, S ≤ 0.002%, 0.004-0.006% of [N], [O] ≤ 0.002%, [H] ≤ 0.0015%, B ≤ 0.0008%, and the balance being Fe and inevitable impurities. The acid-resistant pipeline steel is obtained by sequentially carrying out KR pre-desulfurization, BOF top-bottom combined blowing smelting, LF refining, RH refining, continuous casting with stack cooling, heating, steel rolling, rapid water cooling, and heat treatment on blast furnace molten iron. By means of the synergistic effect of composition design and process optimization, the present invention solves the problems of poor low-temperature drop-weight tear test performance and large strength variation across the same plate in acid-resistant pipeline steel.

The invention discloses a titanium and titanium alloy thin bar continuous rolling production line and a rolling method. The rolling production line comprises a roughing roller set, a compensation heating device, a pre-finishing roller set, a temperature control device, a finishing roller set and a coiling device which are sequentially and linearly arranged. According to the production line, the (square) blanks can be linearly and continuously rolled into finished thin bars from one end to the other end, and the finished thin bars are coiled, so that the problems that the operation burden and the operation hidden danger exist in current reciprocating rolling, the temperature drop of the blanks cannot be effectively compensated in the continuous rolling process, and the production efficiency is low are solved. The problem that the temperature drop is further increased during material transfer among the procedures of radial forging, rough rolling and finish rolling is solved, so that the machining efficiency and yield of the titanium and titanium alloy coiled thin bars are effectively improved, meanwhile, the quality of finished products is further guaranteed through compensation and temperature control, and compared with remelting compensation after material transfer at present, the working efficiency is effectively improved, and the production cost is reduced. And the temperature compensation amplitude is reduced, so that the energy consumption of the whole processing stage is reduced.

The invention relates to the technical field of asphalt, and particularly discloses modified asphalt for drilling fluid and a preparation method of the modified asphalt, and the modified asphalt comprises the following components in parts by weight: 100 parts of matrix asphalt, 12-15 parts of sulfonated modified monomer, 3-5 parts of zwitterionic modified monomer, 2-3 parts of crosslinking modifier, 3-5 parts of environment-friendly activating aid, 2-4 parts of neutralization regulator and 90-110 parts of deionized water. The preparation method comprises the following steps: firstly, melting and activating the matrix asphalt, and adding the environment-friendly activating aid to prepare the activated asphalt; carrying out gradient heating, and adding a sulfonated modified monomer, a zwitterionic modified monomer and a cross-linking modifier step by step to complete composite cross-linking modification; and finally, cooling, adding a neutralization regulator to adjust the pH value, adding deionized water, performing high-speed shearing and homogenizing, and cooling to obtain a finished product. The modified asphalt is stable and controllable in viscosity, excellent in high and low temperature filtration loss control performance, adaptive to complex drilling working conditions, environment-friendly in process and easy to implement.

The invention discloses an oversize LNG storage tank mixed medium precooling dynamic regulation and control system and method, and relates to the technical field of LNG storage tank precooling, and the system comprises a precooling medium supply module for providing two or more precooling media; the pre-cooling spraying distribution pipe network is arranged at the top of the inner tank of the LNG storage tank and is used for uniformly spraying a pre-cooling medium into the storage tank; the pre-cooling process control module is used for sequentially controlling the switching, proportioning and conveying rate of liquid nitrogen and LNG according to a preset stage; the thermal stress control and temperature difference balance subsystem is used for monitoring and adjusting the temperature difference of each area in the storage tank; the boil-off gas recovery module is used for collecting and treating natural gas boil-off gas caused by temperature drop in the pre-cooling process; the pre-cooling pre-safety control unit is used for executing air tightness detection, replacement, drying and cold brittleness pre-judgment operation before pre-cooling; a liquid nitrogen and LNG mixed medium pre-cooling scheme is adopted, and more efficient temperature reduction speed and uniformity can be achieved.

The invention relates to the field of forging forming, in particular to a ring rolling process heating constant-temperature device and a heating method, and the device comprises a heating mechanism, a monitoring mechanism and a control mechanism; the heating mechanism comprises a power source, a transformer and a coil, the power source, the transformer and the coil are electrically connected in sequence, the coil is provided with a U-shaped heating area and used for being arranged near a main roller of the ring rolling machine, and one section, in the circumferential direction, of the annular forge piece is located in the U-shaped heating area. The monitoring mechanism comprises an infrared thermometer, and the infrared thermometer is used for monitoring the temperature of the annular forge piece; the control mechanism comprises a controller, and the infrared thermometer and the power source are electrically connected with the controller. Through cooperation of the controller, the infrared thermometer and the heating mechanism, the problem of local temperature drop of the ring piece in the machining process is effectively solved, the near-isothermal ring rolling technology can be achieved, the uniformity and consistency of the structure of the ring piece are remarkably improved, and the defects of coarse grains, cracking and the like are overcome.

The invention provides a photovoltaic module anti-icing and defrosting structure based on a composite coating and a control method thereof, a system comprises a control unit, and a super-hydrophobic coating, a metal electrode layer, a phase change energy storage layer and a selective radiation layer which are sequentially laminated on the surface of photovoltaic glass, and the metal electrode layer is electrically connected with a pulse power supply. The control method comprises the following steps: M1: daytime working mode: the selective radiation layer radiates the heat of the photovoltaic module into the air to reduce the surface temperature of the photovoltaic module and reduce moisture condensation; m2: a night frost prevention mode: when the temperature is reduced to-2.5 DEG C, the phase change energy storage layer releases latent heat, and the frosting speed is delayed for 2-3 hours; due to the surface contact angle of the super-hydrophobic coating, water drops are difficult to stay and nucleate, and the ice adhesive force is less than 50kPa; and M3, a pulse deicing mode: when the thickness of the ice layer is detected to be greater than or equal to 0.2 mm, the current of a pulse power supply passes through a metal electrode layer, and instantaneous temperature rise is generated on an ice-glass interface, so that the ice layer is stripped. According to the system, multiple coatings are cooperated, so that the energy consumption is greatly reduced while the deicing and demisting effects are ensured.

The present application belongs to the technical field of mould, and particularly relates to a die-casting mould with a conformal cooling water channel, which comprises a mould body, a cooling water channel arranged in the mould body, the cooling water channel comprising a main water channel, an inner layer water channel and an outer layer water channel, the inner layer water channel and the outer layer water channel being respectively communicated with the main water channel, the inner layer water channel and the outer layer water channel being respectively arranged around the inner layer and the outer layer of an insert region on the mould body, an adjusting mechanism being arranged in the inner layer water channel, the outer layer water channel reducing the continuous heat transfer of the mould body to the insert and taking away the heat of the outer layer region, the opening of the adjusting mechanism in the inner layer water channel being gradually increased with the temperature drop of the insert, and the flow rate of the cooling liquid in the inner layer water channel being gradually increased with the temperature drop of the insert; the cooling speed of the insert position can be self-adaptively adjusted according to the temperature change, so that the insert is prevented from being damaged due to the too fast temperature difference change.

The invention belongs to the technical field of data processing, particularly relates to a fault processing method and system for an anti-icing simulation system, and aims to solve the problems that the early warning accuracy is not high and processing instructions are easy to mismatch in the prior art. The method provided by the invention comprises the following steps: acquiring multi-source simulation data of an anti-icing simulation system; determining a temperature drop rate and a humidity change rate according to the environment simulation data, and determining a dynamic regulation and control factor in combination with the system characteristic data; valve time sequence data of the anti-icing simulation system are obtained, the valve time sequence data and the dynamic regulation and control factors are input into a pre-trained time sequence prediction model for fault prediction, and a fault prediction probability is obtained; taking the fault prediction probability as a query vector, retrieving a plan node in a pre-constructed knowledge graph, and generating a predictive instruction; and when the fault prediction probability reaches a preset threshold value, executing the predictive instruction. Based on the method, the early warning accuracy and the instruction adaptability in the fault processing stage are effectively improved.

The invention discloses an asphalt paving construction control system and method based on temperature field analysis, and relates to the technical field of road engineering construction, and the system comprises a temperature field monitoring module which is used for obtaining the temperature information of different positions of an asphalt paving surface, and constructing a three-dimensional temperature field with absolute position information; the multi-source environment information acquisition module is used for acquiring current environment information; the temperature field processing and temperature drop prediction module is used for dividing the three-dimensional temperature field into a plurality of grid units, predicting the future temperature of each grid unit in combination with the current environment information, and predicting the residual effective rolling time required for reducing the temperature to the critical temperature; the segregation risk intelligent diagnosis module is used for carrying out risk judgment according to the gridded temperature field; and the rolling strategy dynamic decision module is used for calculating a rolling scheme for each grid according to the current temperature, the remaining effective rolling time and the risk judgment result of each grid. According to the invention, real-time quality diagnosis, prediction and closed-loop dynamic control of asphalt paving construction can be realized.

The invention discloses a high-strength anti-icing OPGW (Optical Fiber Composite Overhead Ground Wire) sag dynamic prediction and optimization system, particularly relates to the field of power transmission monitoring in alpine regions, is used for solving the problem that the sudden change of the sag of an OPGW is difficult to dynamically predict due to icing superposition, and is based on a load-deformation joint sequence accurately associated with a multi-source load response data set and segmented attached ice distribution. Identifying a tension rapid transfer node and fusing a temperature drop shrinkage trend, quantifying a risk through machine learning, driving local ice melting power distribution by a risk boundary, effectively suppressing a peak tension and leaving a controllable residual strain, and continuously correcting a prediction model by using time sequence increment assimilation; data driving and model correction are adopted for synchronous iteration, and prediction deviation caused by uneven ice attaching space and temperature shrinkage time sequence coupling is eliminated; the real-time ice melting scheduling output significantly delays the sag overrun caused by tension accumulation, ensures the optical fiber communication performance and the safe operation of the wire, and provides a quantitative decision basis for the operation and maintenance of the high-strength anti-icing OPGW line.

The invention belongs to the technical field of steelmaking production scheduling, and provides a steelmaking production scheduling method and system based on digital twinning and a medium. According to the method, a continuous casting billet digital twin body is constructed, dynamic coupling analysis is conducted on cutting action and roller way conveying, and the matching performance of cutting and hot charging rhythms is judged; aiming at the mismatching condition, calculating the backlog driving force by utilizing a car-following model, and activating a dynamic buffer area in combination with a state intensity-spatial distance model; the casting blank temperature drop rate is corrected based on the heat transfer theory and the thermal radiation physical field model, and the hot charging fitness is evaluated; and establishing a space-time constraint scheduling model, and dynamically optimizing casting blank generation scheduling. The system comprises a matching identification module, a buffer establishment module, a hot charging analysis module, an adaptation analysis module and a rhythm adjustment module. According to the scheme, the continuous casting billet cutting is matched with the hot charging rhythm, and the hot charging fitness and the production efficiency are improved.

The invention discloses an application of a BOPP (Biaxially-oriented Polypropylene) film in preparation of a draw-bar box shell, and the draw-bar box shell with a multi-layer composite structure is formed by compounding a multi-layer BOPP film serving as a main body layer and a lining layer through a hot press molding process. According to the invention, the BOPP film commonly used in the packaging field is creatively applied to the box body structural member, the BOPP film lamination hot press molding replaces the traditional PP injection molding process, and the modular design of the combined layer structure and the collaborative innovation of the hot press process are combined, so that the prepared draw-bar box shell realizes the balance of high strength and light weight, and has no cracking phenomenon when falling at a low temperature of-30 DEG C, and the service life of the draw-bar box shell is prolonged. The low-temperature performance is excellent, and meanwhile, the production suitability and the color control precision are improved.

The invention discloses a compression system end area flow regulation and control method based on blade inner cooling under a low Reynolds number. Firstly, through calculation or measurement, a compression system end area three-dimensional flow field under different Reynolds numbers is obtained, and the end area loss variation degree is quantified. Then, revealing regulation and control rules of different isothermal cooling wall surface conditions on near-wall fluid physical property parameters, boundary layer growth rate and end region secondary flow migration intensity under a low Reynolds number, and establishing a correlation model of end region loss reduction and efficiency improvement and wall surface cooling intensity; and on the basis, a blade built-in convection cooling channel structure is designed, the cooling channel and blade surface flow heat characteristics are analyzed based on a conjugate heat transfer method, and inner cooling channel structure parameters are optimized until the wall surface temperature drop amplitude meets the preset requirement. And finally, checking the wall surface cooling effect, and measuring end region performance parameters during inner cooling regulation and control under a low Reynolds number to complete scheme verification. By introducing blade inner cooling, the flow characteristic of an end region can be remarkably improved on the premise that the structural complexity is not increased as much as possible, and stable and efficient operation of a compression system under the low Reynolds number is guaranteed.

The application provides a production method for improving the width direction performance stability of 800MPa grade complex phase steel and 800MPa grade complex phase steel produced by the method. In the production, the use of a width setting machine increases the edge deformation and promotes the grain structure of the edge to be more refined. The optimization of the water use strategy between the stands reduces the width direction temperature unevenness during the finishing rolling. The laminar flow cooling front section fast cooling technology is used to quickly cool the strip steel to the coiling target temperature, reduce the residence time of the strip steel in the water environment, and reduce the edge temperature drop during the period. The precise control laminar flow cooling edge shielding amount technology is used to make the edge of the strip product of different widths naturally flow through the cooling of the middle area cooling water, improve the edge temperature of the strip, and reduce the difference between the edge and the middle of the strip in the laminar flow cooling and the hot coiling cooling in the structure and performance. The product width direction tensile strength range is less than or equal to 35MPa, and the strength low point is greater than or equal to 815MPa.

The application provides a preparation method of a liquid crystal elastomer foam doped with boron nitride, comprising the following steps: 1) preparation of a NaCl salt template; 2) preparation of a liquid crystal elastomer monomer solution: a liquid crystal elastomer monomer solution is prepared by adding a sufficient amount of a toluene solution into 1,4-bis-[4-(3-acryloyloxypropoxy)benzoyloxy]-2-methyl benzene RM257 as a liquid crystal unit; 3) formation of a liquid crystal elastomer network; 4) preparation of a pre-crosslinked liquid crystal elastomer foam; 5) deformation programming of the liquid crystal elastomer foam: the pre-crosslinked liquid crystal elastomer foam is placed into the template for constant compression, and secondary crosslinking is performed using ultraviolet light under the constant compression state to form a secondary crosslinking network; at this time, the liquid crystal elastomer foam has a thermoreversible deformation characteristic, which is manifested as expansion at a temperature rise and shrinkage at a temperature drop, and the process cycle is reversible; and 6) preparation of a liquid crystal elastomer / heat-conducting BN composite foam.

The invention relates to a preparation method of a high-quality EB evaporation target, and relates to the field of target preparation, and the preparation method comprises the following steps: loading a powder raw material into a cleaned crucible, and pre-compacting to obtain a pre-compacted crucible; putting the pre-compacted crucible into spark plasma sintering equipment, vacuumizing and pressurizing, starting auxiliary heating to raise the temperature to a thermal shock buffer temperature, stopping auxiliary heating, introducing current to raise the temperature to a sintering densification temperature, preserving heat, stopping introducing current, starting auxiliary heating to carry out speed-controlled cooling, and cooling to a stress safety cooling threshold value, so as to obtain the high-temperature-resistant and high-pressure-resistant crucible. And transferring into a program control cooling system for cooling, removing the crucible, cleaning and drying to obtain the high-quality EB evaporation target material. The prepared target material has high density and mechanical strength, internal stress is relieved, good evaporation stability and film layer uniformity are shown in the electron beam physical vapor deposition process, and the finally obtained coating is compact in structure and has high hardness and high adhesive force.

The invention discloses an unsaturated porous medium soil heat conductivity coefficient prediction method and system based on data mechanism driving, and belongs to the technical field of geotechnical engineering thermophysical property analysis. According to the method, experimental testing, numerical simulation and an intelligent algorithm are integrated, and a research normal form of data and mechanism coupling driving is embodied. The method specifically comprises the following steps: obtaining a heat conductivity coefficient initial data set through a test means; then establishing a finite element model, verifying the reliability of the finite element model through temperature drop comparison, and generating 80 groups of working condition data through a least square finite element method; and finally, an intelligent algorithm is introduced to train a prediction model, BPNN is trained after normalization, and neurons of an input layer 3, neurons of a hidden layer 12 + 6 and neurons of an output layer 1 are included. According to the algorithm, a physical mechanism and data driving are fused, the problem that a traditional model is poor in applicability is solved, prediction precision is high, and the algorithm is suitable for civil engineering thermophysical analysis.

The invention relates to the field of hub bearing machining, and discloses a hub bearing production process which comprises three stages: hot forging forming, residual temperature control cooling and structure stabilization stage, hot forging forming comprises upsetting, pre-forging, finish forging and rapid cooling, finish forging adopts a finish forging die for machining, an infrared thermometer is mounted on the finish forging die for monitoring, and the infrared thermometer is mounted on the finish forging die for cooling. During finish forging, the temperature fluctuation of the forge piece is controlled to be smaller than or equal to + / -15 DEG C, and the finish forging temperature is controlled to be 950-1050 DEG C; and the time interval from finish forging to rapid cooling starting should be smaller than or equal to 30 s. An infrared thermometer is adopted for monitoring the finish forging temperature, the fluctuation is controlled to be smaller than or equal to + / -15 DEG C, the temperature is maintained to be 950-1050 DEG C, it is ensured that the forge piece is located in an ideal thermal deformation interval, overheating or overburning or insufficient mold filling is avoided, and fine and uniform austenite grains are obtained; and the starting interval from finish forging to rapid cooling is smaller than or equal to 30 s, temperature drop fluctuation is reduced, cooling continuity is guaranteed, and structure coarsening is prevented.

The invention relates to the technical field of LED module preparation, and discloses a display module capable of preventing elevation low-temperature falling dead lamps and preparation equipment thereof.The display module comprises a structure body, the four corners of the structure body are all inclined planes, a mounting space is formed in the middle of the structure body, a light guide plate is pasted in the mounting space, and LED lamps are connected to the periphery of the light guide plate; positioning blocks are arranged at the positions, adjacent to the slopes, in the periphery of the mounting space, the cross section of each positioning block is in a right trapezoid shape, the right-angle direction faces the light guide plate, two side plates are further arranged on the two sides of the structure body, and square and long and thin rectangular openings are symmetrically formed in the connecting positions of the two side plates and the structure body from inside to outside and used for locking the light guide plate after the side plates are bent. Through the design of the inclined planes at the four corners of the structure main body, the positioning blocks in the mounting space and a side plate bending and locking mechanism, displacement of the light guide plate under high-pressure impact is limited jointly, and damage caused by the fact that the light guide plate impacts an LED lamp is avoided.

The application provides a processing method of an IN718 axial flow blade, uses incomplete recrystallization forging technology, makes the blade forgings without longitudinal low-magnification "bright strip", obtains more homogenized grain structure, improves the forging quality and production efficiency, the incomplete recrystallization forging technology is adopted, the blank temperature is controlled in a certain range through process parameters such as blank structure, equivalent strain and deformation rate in the die forging process, the blank temperature drop can be effectively reduced, meanwhile, the grain structure can be effectively refined under a small deformation amount, and the longitudinal low-magnification "bright strip" of the forged forgings after final forging is eliminated.

To provide a heat retention device that can further suppress the temperature drop of the fluid in the discharge duct of a heat exchanger. [Solution] A heat retention device 10 is provided in the discharge line of a heat exchanger 3 that utilizes the exhaust from a burner 2, and is connected to the discharge port 3a of the heat exchanger 3 and includes a discharge duct 4 that transports the fluid discharged from the discharge port 3a to the point of use, and an electric heater 5 is attached to at least a part of the discharge duct 4, and the electric heater 5 heats the fluid passing through the discharge duct 4.

The present invention provides a three-dimensional, special-shaped curtain wall system for large venues, comprising a support and curtain wall panels arranged at the left and right ends of the top of the support; the curtain wall panels are hingedly connected to the support, and a temperature memory alloy is connected between the two curtain wall panels; the temperature memory alloy deforms based on the ambient temperature; and when the ambient temperature rises, the temperature memory alloy deforms and stretches, increasing the angle between the two curtain wall panels; when the ambient temperature drops, the temperature memory alloy recovers its deformation, reducing the angle between the two curtain wall panels. The present invention also provides a method for installing the above-mentioned curtain wall system. By arranging a memory metal between two hinged curtain wall panels, the present invention can adjust the angle between the curtain wall panels by temperature, creating a more special visual effect.

The utility model discloses a Gleeble vacuum melting equipment device, which comprises a Gleeble main machine with a pressure head and a vacuum chamber, a melting device and a clamping and fixing device are further arranged in the vacuum chamber, and the melting device is connected to the pressure head through the clamping and fixing device. According to the smelting equipment disclosed by the utility model, the Gleeble thermal simulation testing machine is fully utilized, and the alloy can be quickly and conveniently smelted and new technological parameters of alloy smelting can be explored by controlling temperature rise and temperature drop at different temperatures and speeds in an experiment process, so that the time is saved, and the waste of materials is also reduced.

The utility model provides a fermentation unit which comprises a cold and hot water tank, a fermentation tank, a control box and a water return box, the cold and hot water tank is divided into a cold water tank and a hot water tank by a heat insulation plate, an electric heater is arranged in the hot water tank, and a hot water outlet is formed in the bottom of the side wall of the hot water tank; the fermentation tank comprises a tank body, a temperature measuring opening is formed in the tank body, a temperature measuring meter is installed on the temperature measuring opening, a heat exchange belt with a rectangular cross section is welded to the outer side wall of the tank body, the heat exchange belt is spirally wound around the outer side of the tank body from top to bottom, a heat exchange inlet is formed in the bottom end of the heat exchange belt, and a heat exchange outlet is formed in the top end of the heat exchange belt. The heat exchange inlet is communicated with the hot water outlet and the cold water outlet through an electromagnetic valve, and the heat exchange outlet is communicated with the water return tank; and the thermodetector and each electromagnetic valve are electrically connected with the control box. Through the synergistic effect of the control box, the thermodetector and the plurality of electromagnetic valves, rapid switching between temperature rising and temperature falling is realized, and the flexibility of the fermentation process is improved.

The invention belongs to the technical field of data processing, and relates to a terrestrial heat-to-well production and injection system thermal breakthrough time calculation method based on temperature drop constraint, which comprises the following steps: acquiring terrestrial heat-to-well production and injection data, and inputting the terrestrial heat-to-well production and injection data into a thermal breakthrough time calculation model, obtaining thermal breakthrough time calculation results of terrestrial heat on the well exploitation and irrigation system under different exploitation and irrigation amounts, exploitation and irrigation well spacing and allowable temperature drop conditions; wherein the thermal breakthrough time calculation model is obtained by combining a thermal breakthrough time analysis framework based on allowable temperature drop constraint with an energy conservation principle. Based on the principle of conservation of energy, namely the first law of thermodynamics, a thermal breakthrough time calculation model of the mining well is deduced on the basis that the temperature of the mining well is allowed to be reduced to a certain extent, the thermal breakthrough occurrence time of the mining well is accurately predicted, and therefore a scientific basis is provided for optimization design of a geothermal-to-well mining and injection system; the purposes of prolonging the service life of a geothermal system, improving the exploitation efficiency of geothermal resources and guaranteeing sustainable development of medium-deep geothermal resources are achieved.

The application provides a heating control method and device, a temperature controller, a semiconductor device and a medium, and relates to the field of control. When there is a firmware upgrade requirement for a target temperature controller, a first temperature control program is started to control the working of a heating component, and then the firmware upgrade of the target temperature controller is performed. During the firmware upgrade of the target temperature controller, the heating component can perform heating work based on the first temperature control program, so that the temperature drop of a heating object is avoided. Before the first temperature control program is started, the current control parameters of the target temperature controller are determined. After the firmware upgrade of the target temperature controller is completed, the normal working control of the heating component is restored according to the pre-determined control parameters and a second temperature control program. Through the setting and starting of the first temperature control program, the temperature drop of the heating object is effectively avoided, so that the problem that the internal region of the semiconductor device and the like is polluted due to the temperature drop is prevented, the normal implementation of the CVD process is ensured, and the increase of the process implementation cost and the reduction of the efficiency are avoided.