78 results about "Temperature jump" patented technology

The invention discloses a fruit / vegetable drying device and a working method thereof. With the fruit / vegetable drying device and the working method thereof, more fruit / vegetable windswept area is provided, the drying effect is better, the temperature at a baking area is uniform, and temperature jump can be avoided during the humidity elimination, so that the product quality is ensured. The fruit / vegetable drying device comprises a box body and a bidirectional circular drying system, wherein a baking area and a heating area are formed in the box body; a separation plate is arranged between the baking area and the heating area; an upper air vent is arranged at the top of the separation plate and a lower air vent is arranged at the bottom; a heating device and an air feeding device are arranged in the heating area; the bidirectional circular drying system comprises a counter-rotation circulating fan which is arranged in the heating area and located above the heating device; and the upper air vent, the counter-rotation circulating fan, the heating device and the lower air vent are communicated in sequence. The fruit / vegetable drying device provided by the invention is capable of ensuring that the temperature at each point in the baking area is more even.

Intelligent antifog resin lenses and a formed glass preparing method are composed of lens frames (1), lens legs (2), the intelligent antifog resin lenses (3), an intelligent control circuit plate (4), a lithium battery (5), a control box (6) and a flexible circuit plate (7) and a magnetic connector (8). According to the intelligent antifog resin lenses and the formed glass preparing method, a pair of intelligent antifog glasses is formed, and the pair of intelligent antifog glasses is capable of automatically removing fog which is formed on the lenses due to temperature jump, guaranteeing that transparency of the lenses can not be affected by any water vapor and bringing convenience for work and lives of users.

The invention discloses an intelligent analysis method based on distributive optical fiber temperature measurement. The intelligent analysis method based on the distributive optical fiber temperature measurement comprises the following steps that partitioned management is conduced on a temperature measurement cable, and an optical fiber temperature measurement device is installed; an alarming parameter is set in a background data processing system, and the distributive optical fiber temperature measurement device reports the real-time temperature measurement data; every time a current temperature value is received, a system conducts temperature jump analysis once on the temperatures collected in each partition area, and if an analysis value exceeds a threshold value, temperature jump alarming is conducted; every time the current temperature value is received, the system conducts slow change analysis, the temperature is compared with the highest temperature, the lowest temperature, the environment temperature, the average temperature difference and a temperature difference of each partition area, and when the temperature values exceed set numerical values, slow change temperature alarming is conducted. According to the intelligent analysis method based on the distributive optical fiber temperature measurement, analysis and filtering are conducted on the sudden change and the slow change of the temperature, when the operation state of the cable and the temperature of the surroundings fluctuates abnormally or a fault is caused, early warning can be automatically conducted, and the safety operation level of a power cable is further improved.

The invention discloses a temperature change detection method for the environment of a battery and a temperature change detection device thereof. The temperature change detection method comprises the steps that A. battery temperature is acquired in real time and the battery temperature charge rate is calculated; and B. when the battery temperature charge rate is judged to be greater than a threshold, a preset temperature corresponding matrix is inquired according to the current battery temperature and the battery temperature charge rate and the current environment temperature is acquired so that the accurate environment temperature can be immediately acquired when the environment temperature jumps or sharply changes, and the problems that an existing mobile terminal adopts a temperature-sensitive resistor to detect temperature and the change of the resistance value of the temperature-sensitive resistor is slow and cannot be timely detected can be solved.

The invention provides a biaxial uniaxial tension device for in-situ structure detection in combination with the scattering of X-rays and an experimental method of the biaxial uniaxial tension device. The device comprises a high-precision servo motor (1), a torque sensor (2), a precise gear (3), a heating furnace (3), a reverse tension shaft (5) and a Labview software control system (6). A guide rail, the precise gear (3) and a reverse tension rod are adopted for transmission. The rotating speed of the servo motor (1) and the rotational displacement are controlled by the Labview to realize precise displacement and speed tension control. The temperature distribution of the heating furnace (3) is uniformed and the thermal degradation at high temperature of samples is reduced by forced nitrogen flow. A temperature monitoring point is preset in the heating furnace (3) and a temperature controller is adopted to precisely control the temperature. Temperature jump is realized between two heating furnaces (3) of different temperature. The device has the advantages of small volume, light mass, simplicity in disassembling and installing and the like, is particularly suitable for the combination of synchrotron radiation experimental line stations and is a good device for studying the crystallization of polymer melt induced by a flow field.

The invention discloses a method of super-critical Fischer-Tropsch synthesis, using molten-iron as catalyst to convert synthetic gas (CO+H2) into hydrocarbon in the presence of supercritical media. The process comprises as follows: mixing the synthetic gas and supercritical media, performing super-critical Fischer-Tropsch synthesis under the conditions of temperature of 180-350DEG C, pressure of 3.0-10.0MPa and synthetic gas airspeed of 1000h-1-30000h-1 and converting the synthetic gas into liquid fuel. The molten-iron catalyst has the advantages of easy obtaining of raw material, strong abrasive resistance, high space time yield, high selectivity of olefin, simple preparing process, stable catalyst property, more suitability of industrial production and the like. Under the same reaction condition, compared with gas-phase and liquid-phase Fischer-Tropsch synthesis, the super-critical Fischer-Tropsch synthesis can reduce temperature jump of beds, decrease carbon deposit on surface of the catalyst, prevent devitalization of the catalyst and prolong the service life of the catalyst. In terms of reaction property, the invention can increase conversion rate of CO, reduce selectivity of methane and increase selectivity of C5+ and olefin in products.

The invention discloses a roasting flue gas heat recovery and dust suppression system of a zinc oxide production device. The roasting flue gas heat recovery and dust suppression system comprises a box body, wherein a flue gas inlet and a flue gas outlet are formed in the box body, a plurality of heat exchange assemblies are longitudinally arranged on the box body, each heat exchange assembly comprises a feed box, a discharge box and a plurality of heat exchange tubes which are used for communicating the feed box with the discharge box, all of the heat exchange tubes are positioned on the inner wall of the box body, cooling media respectively flow into each feed box, then flow to each heat exchange tube and flow out from each discharge box at last, and air mechanical force is regularly sent to shake off dirt and dust on the outer walls of the heat exchange tubes, so that dirtiness resistance is reduced, and the flue gas heat exchange effect is guaranteed. According to the heat recovery and dust suppression system, the plurality of heat exchange assemblies which are mutually independent are arranged on the box body, the heat of a part of flue gas is carried away by each heat exchange assembly, so that gradual cooling of the box body is realized, and a stable controllable temperature gradient field is formed in a heat exchange flue due to the change of the flue gas temperature, so that gradual dust suppression is realized, and the phenomenon that a pipeline is blocked by powdered zinc oxide which is suddenly cooled due to temperature jump is avoided. The roasting flue gas heat recovery and dust suppression system has the advantages of simple structure and reliability in operation.

The invention provides a longitudinal cracking bleed-out detection and prediction device for a continuous casting sheet billet and a detection method thereof. The device is mounted at the area between a first sector section and a second sector section below a slab casting machine crystallizer and comprises high-temperature resistance metal ceramic probes, metal guide rods, a guide groove, hydraulic oil cylinders, hydraulic locks, one-way throttle valves, a reversing valve, a hydraulic pump, an oil tank and a PLC control system. According to the method, the high-temperature resistance metal ceramic probes move back and forth on the continuous casting sheet billet, so that the actual temperature of the continuous casting sheet billet is detected, and then the temperature is transmitted to the PLC control system; when the detected temperature jumps above 50 DEG C, the PLC control system gives out an alarm automatically, at the moment, the system is automatically switched to be in an accident control mode or a manual operation mode, the casting speed of the continuous casting sheet billet is decreased so that longitudinal crack diffusion can be reduced, and therefore bleed-out of the sheet billet because of longitudinal cracking is prevented. By means of the device and method, the bleed-out probability of the continuous casting sheet billet due to longitudinal cracking is lowered, the device and method can be used for longitudinal cracking prediction control over a continuous casting machine apart from bleed-out prediction, and the promotional value is high.

The embodiment of the invention discloses a blast furnace blower temperature monitoring method and system and relates to the technical field of monitoring. The blast furnace blower temperature monitoring method comprises the steps that the current temperature of a temperature detecting point is periodically collected through a temperature collecting module and is compared with a preset alarming temperature, and the temperature monitoring result of the temperature detecting point is generated; and the temperature difference absolute value is calculated through the current temperature of the temperature detecting point and the historical temperature of the temperature detecting point and is compared with a preset jumping alarming temperature, and the temperature jumping monitoring result of the temperature detecting point is generated. The condition that the temperature of the temperature detecting point is jumped due to self breakdown of the temperature collecting module is eliminated, the problem that a blast furnace blower stops due to non-self breakdown of the blast furnace blower is solved, and meanwhile, the condition that maintenance personnel of the temperature collecting module confirm the breakdown condition and overhaul the device is facilitated.

In one aspect, the present invention provides a method for enhancing the sensitivity of liquid-state NMR or MRI experiments. In general, the method involves providing a frozen sample in a magnetic field, wherein the frozen sample includes a polarizing agent with at least one unpaired electron and an analyte with at least one spin half nucleus; polarizing the at least one spin half nucleus of the analyte by irradiating the frozen sample with radiation having a frequency that excites electron spin transitions in the at least one unpaired electron of the polarizing agent; melting the frozen sample to produce a molten sample; and (d) detecting nuclear spin transitions in the at least one spin half nucleus of the analyte in the molten sample. In certain embodiments, the methods further comprise a step of freezing a sample in a magnetic field to provide the frozen sample in a magnetic field.

The invention relates to a filtering method for eliminating cast iron thermal analysis curve interference. A filtering window is arranged to filter curves in the window in different conditions, and the filtering of a thermal analysis curve is finally completed. According to the filtering method disclosed by the invention, each temperature spot on the thermal analysis curve is firstly judged to be a burr, a peak or an intrinsic temperature jump. The interferences of the burr and the peak are filtered, and the intrinsic temperature jump is retained. After the filtering treatment, the information of the intrinsic temperature jump is retained while the burr is removed, the thermal analysis curve is smoothed, and accuracy of analysis on contents of carbon and silicon is improved.

The invention relates to a filtering method for eliminating cast iron thermal analysis curve interference. A filtering window is arranged to filter curves in the window in different conditions, and the filtering of a thermal analysis curve is finally completed. According to the filtering method disclosed by the invention, each temperature spot on the thermal analysis curve is firstly judged to be a burr, a peak or an intrinsic temperature jump. The interferences of the burr and the peak are filtered, and the intrinsic temperature jump is retained. After the filtering treatment, the information of the intrinsic temperature jump is retained while the burr is removed, the thermal analysis curve is smoothed, and accuracy of analysis on contents of carbon and silicon is improved.

The invention relates to the field of heat treatment equipment, in particular to an annealing sealing device. The annealing sealing device comprises an annealing furnace. Two supports perpendicular to an inlet of the annealing furnace are symmetrically arranged on the side wall at the position of an inlet of the annealing furnace. The end portions of the two supports are provided with a connection plate. The supports are provided with sliding grooves. The sliding grooves of the two supports are internally connected with fulcrum bars in a sliding manner. The ends, far away from the sliding grooves, of the fulcrum bars are rotationally connected with rolling wheels. A sealing cover arranged on the inlet of the sealing furnace is arranged between the two rolling wheels, and the upper inner wall and the lower inner wall of the sealing cover are connected with a plurality of sets of sealing pieces in a hinged manner, wherein the sealing pieces are intersected, rolling balls are hinged to the end portions of the sealing pieces, and the end portions at the feeding position of the sealing cover are perpendicularly provided with springs connected with the connection plate. According to the annealing sealing device, the situation that high-temperature gas appearing at the inlet position of the annealing furnace scalds a worker can be avoided, workpieces can be preheated, and the temperature jump on the surfaces of the workpieces is prevented.