78 results about "Temperature jump" patented technology

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 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.

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 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.