34results about How to "Large "fluctuation" range" patented technology

The invention relates to a comprehensive control method for keeping a fixed-point height of an airship in the stratosphere, which is used for keeping the fixed-point height of the airship in the stratosphere by adopting a combined mode of pressure adjustment and thrust vector. The method has the advantages of small fluctuation range of the fixed-point height and great corresponding reduction of the reserve volume of an auxiliary ballonet. To be explained, the application of the thrust vector does not increase extra energy consumption because the airship in the stratosphere always keeps a certain thrust in a fixed-point flight in order to overcome the wind resistance; According to the method, only the direction of the thrust is changed and an increased net buoyancy is balanced by utilizingthe component in the vertical direction, which can result in that the component in the horizontal direction cannot overcome the wind resistance so that the position precision of the airship in the stratosphere in the horizontal direction cannot be kept; however, in terms of engineering application, the expense of a little horizontal positioning precision is worthy because the fixed-point height position of the airship in the stratosphere is far more important than the horizontal position precision thereof; and the airship in the stratosphere can flexibly fly to a fixed-point position once thetemperature returns to normal.

The invention relates to a method for preparing high-content trans-lutein crystals from dried marigold flower pellets. The method includes the following steps that: after the dried marigold flower pellets are ground and sieved, organic solvent and aqueous alkali are added to carry out extraction and saponification at the same time, the extracted saponified solution is filtered to remove filter residue, and is then concentrated under vacuum, 50 percent of aqueous ethanol solution is then added into the concentrated solution, the pH value is regulated to 7.0, and after centrifugation and vacuum freeze drying, crude trans-lutein is obtained. The crude trans-lutein is dissolved in ethyl acetate, and is washed by deionized water, the ethyl acetate phase is concentrated under vacuum, normal hexane / acetone mixed solvent is added in the concentrated solution, the concentrated solution is kept still under the room temperature and then filtered, and is then washed by cold ethanol and deionized water, and after vacuum freeze drying, the high-content trans-lutein crystal is prepared. The invention has the advantages of simple technique and high trans-lutein yield, and is suitable for industrialized production.

The invention discloses a DVR multipath audio and video recording method. The method comprises the steps of collecting and buffering all the input audio data sections to an audio data buffer area, collecting and compressing a part of input video frame compression data into a video data buffer area, periodically checking whether data exist in the buffer areas in a timing mode, and reading the data of the buffer areas to a storage card. The method is quite suitable of application of DVR multipath audio and video record large in video frame rate fluctuation range, is wide in frame rate fluctuation range, and can reach 80% in fluctuation range, namely, video still can maintain a good time synchronous effect when being changed into 6frames / second from original preset 30frames / second in frame rate.

A differential features larger amplitude in gear ratio fluctuation and higher torque bias ratio. When one of the driving wheel slips, the period of the gear ratio fluctuation between the pinion and side gears involves at least two pitches, thus each period of the gear ratio fluctuation involves a group of teeth, and the number of teeth involved in each group are corresponding to the number of pitches involved in each period. Each pinion has an odd number of groups of teeth, and the group number in side gears is a multiple of the number of pinions. The differential is particularly suitable for off-road vehicles, tippers and wheeled civil engineering machinery.

The invention relates to a multiphase flow regulation device and a method for restraining slug flow by utilizing same. The multiphase flow regulation device comprises at least one basic unit, each basic unit comprises a front straight tube section and a rear straight tube section, a main bent tube with a bending angle at 180 degrees protrudes upwards and is arranged between the front straight tube section and the rear straight tube section, the main bent tube is connected with the front straight tube section via a front bent head with a bending angle at 90 degrees and connected with the rear straight tube section via a rear bent head with a bending angle at 90 degrees. The multiphase flow regulation device is reasonable in structure, the bending radius of the main bent tube is large, so that a wave-shaped tube is large in 'waving' range, and gas storage at the top of the main bent tube and generation of mixing effect are facilitated. By the aid of the straight tube sections for connecting the basic units, the total length of the multiphase flow regulation device can be adjusted conveniently, and the multiphase flow regulation device can be placed on a plane stably. The method for restraining slug flow by utilizing the multiphase flow regulation device is applicable to severe slug flow and hydraulic power slug flow, and is simple to operate without being allocated with extra hardware and software.

The invention belongs to the application field of the desulfuration technique of a sulfur-containing natural gas single well and particularly relates to a device and process for preparing acid throughthe desulfuration of the sulfur-containing natural gas single well. The device comprises an amine-method desulfuration and decarburization system, a wet-method acid preparation system and a waste heat power generation system. According to the process provided by the invention, the problems that the desulfuration construction period of a Claus process in the development process of the sulfur-containing natural gas single well, and the tail gas cannot easily reach the standard are solved, and the problems that a large number of wastewater, waste residue, waste gas and the like are produced in wet-method desulfuration (Lo-Cat process) are solved; and by generating power through the heat of a waste heat boiler, the operation cost of the system is greatly lowered, the security risk is reduced,and the problems of environmental pollution and the like are completely eradicated.

The invention discloses a negative electrode current collector comprising a porous metal substrate and a lithium-containing material incorporated in the porous metal substrate, the lithium-containingmaterial being uniformly loaded in pores of the porous metal substrate, and the lithium-containing material being capable of being removed from the pores during a lithium ion battery cycle. The invention also discloses a negative electrode sheet, comprising the negative electrode current collector and a negative electrode active material layer of the negative electrode current collector surface, wherein the negative electrode material layer comprises a negative electrode active material. The invention also discloses a preparation method of the negative electrode current collector and a lithiumion battery.

The invention discloses a phenol cracking parameter automatic optimization method and device based on artificial intelligence, and belongs to the field of neural network models. According to the invention, artificial intelligence is combined with the control process of the traditional chemical process, and the difficulties and pain points in the chemical process are solved with the advantages of emerging artificial intelligence. According to the method, the artificial intelligence technology is combined, many problems in the phenol cracking process are solved in a targeted mode, the yield and purity of the target compound can be improved while the stability of the cracking process is improved, and the income is greatly increased.

The invention relates to a multi-element alloy getter for purifying krypton and xenon, and a preparation method of the getter, and the getter can be used for solving the problems that the existing getter is poorer in pertinence, insufficient in handling capacity, high in energy consumption, easy in pulverization and short in service life, and the like. The multi-element alloy getter comprises the following components: 50-65% of zirconium, 10-20% of aluminum, 5-10% of iron, 2-10% of titanium, 3-5% of lanthanum, 3-5% of silicon and the balance of unavoidable impurities. The method comprises the steps of pretreatment of alloy simple substances, alloy smelting and alloy crushing. The getter can meet the purity requirement of high-purity krypton and xenon (99.999%), is large in fluctuation ranges of anti-raw gas fluorocarbon and oxygen nitrogen compound, large in raw gas impurity adsorption capacity, high in raw gas impurity removal depth, wide in service temperature range (300-1000 DEG C) and long in service life, and is not pulverized.

The invention discloses a method for detecting the oil applying rate of fiber. The method comprises the following steps of: 1, acquiring a low-field nuclear magnetic resonance signal of standard fiber and performing linear fitting to obtain a calibration curve; 2, acquiring a low-field nuclear magnetic resonance signal of tested fiber and performing wavelet soft-threshold filtering processing to obtain a filtered reconstruction signal; and 3, substituting the filtered reconstruction signal into the calibration curve to obtain the oil applying rate of the fiber. According to the method, the detection accuracy of the oil applying rate of the fiber is increased, and the detection time is reduced to be less than 1 minute from the original 4 minutes.

The invention belongs to the technical field of natural gas processing and application, and particularly relates to a comprehensive utilization system and process for sulfur-containing natural gas development. The comprehensive utilization system for the sulfur-containing natural gas development includes an amine method desulfurization and decarbonization system, a wet acid production system, a waste heat power generation system and an LNG liquefaction system. The comprehensive utilization system and process solve the problems such as waste water, waste slag and waste gas generated during theextraction purification and deep processing of sulfur-containing natural gas, and utilize the waste heat of a waste heat boiler for power generation, thereby greatly reducing the system operation cost, reducing the safety risks, and eliminating environmental pollution and the like; and the process is short, the acid gas concentration subject range is wide, the exhaust gas emission after final treatment fully meets and is suitable for the increasingly strict national environmental protection standards, the strategic goal of the enterprise circular economy is truly realized, and the comprehensive utilization system and process can be widely applied to the field of low, medium, high and extra-high natural gas extraction and purification and deep processing.

The invention relates to a reactor vented waste gas purification device and method. The purification device mainly comprises a vented waste gas check device, a gas bag collecting chamber, a high-rate waste gas dilution device and an optical pyrolysis oxidation device, wherein a reactor is connected to the gas bag collecting chamber through the vented waste gas check device, an outlet of the gas bag collecting chamber is connected to the high-rate waste gas dilution device; an outlet of the dilution device is connected to the optical pyrolysis oxidation device; an outlet of the oxidation device is connected to a gas emission outlet. The purification method comprises following steps: reactor vented waste gas is collected to the gas bag collecting chamber; waste gas concentration is reduced by the high-rate waste gas dilution device; gas with low concentration is subjected to optical pyrolysis purification. The reactor vented waste gas purification device and method have the advantages of being high in safety, good in stability, low in cost, high in purification efficiency and free of secondary pollution.

The present invention provides a backlight, a display panel and a display device, The backlight includes: a first light source and a second light source, the brightness of light emitted from the first light source is different from that of light emitted from the second light source; and a light guide plate, the first light source and the second light source are disposed above the same end surface of an edge of the light guide plate, and light-emitting surfaces of the first light source and the second light source face the end surface of the edge of the light guide plate, a light mixing structure is disposed on the end surface of the edge of light guide plate and is capable of mixing the light emitted from the first light source and the light emitted from the second light source into light with uniform brightness.

The invention provides an auxiliary brightening agent for potassium chloride galvanizing. The auxiliary brightening agent is combined with a main brightening agent and a carrier brightening agent for application, and is characterized in that the formula of the auxiliary brightening agent comprises natural gum, wherein the natural gum is crushed into powder, the powder is dissolved in hot water, impurities are filtered from the powder through a filter, and the powder is added into the auxiliary brightening agent for uniform stirring. According to the auxiliary brightening agent, the cathodic polarization of a high-current density area can be improved, the dispersion capability of a plating solution can be improved, and plated layer crystals are delicate and bright; the plating solution is high in covering power, and a plated layer is clear, smooth and high in deposition speed, the binding force of the plated layer can meet requirements, high current efficiency is ensured, and a plated part is prevented from being scorched and blackened; the auxiliary brightening agent is easy to prepare, stable, low in cost, pollution-free and environmentally friendly.

A residual heat generation system of signal pressure low parameter backheat comprises residual heat boiler, steam turbine, generator, condenser, water supply pump and water supplementary unit. It is featured as connecting above said equipment and units by pipeline, driving generator to generate power by steam turbine, setting water-supply heating unit between economizer of said boiler and water supply pump, setting main steam pressure of said boiler to be 0.5-2.45Mpa and applying 6-18deg.c as narrow point temperature of said boiler.

The invention discloses an optical direct current measuring device for direct current high-voltage transmission. The high-voltage primary end adopts an all-fiber sensing mode, the primary end and thesecondary end adopt a polarized light transmission scheme of segmentally folded silicone rubber insulator pre-embedded polarization-maintaining fiber, and the secondary end adopts a high-speed opticalmodulation and demodulation scheme to realize the direct current measurement. A sensing optical fiber ring loop body and an upper flange structure are located at the top of an upper high voltage polarization-maintaining fiber insulator, an upper equalizing ring in located on the outer periphery of a sensing optical fiber ring body, a middle equalizing ring is located at the junction of insulatorsat both ends, a lower flange structure and a lower fiber storing box body are located at the bottom of the insulators, a high-speed demodulation unit is located on the secondary side. The optical direct current measuring device is suitable for current measurement of a high-voltage direct current, especially an extra-high voltage flexible direct current polarity bus direct current, and the performance of a control protection system is improved.

The invention discloses powder metallurgy drying equipment for metal product production, and belongs to the technical field of metal product production. A flexible drying belt is additionally arranged in a drying cavity formed by a drying outer cylinder and a drying inner cylinder, and a plurality of storage cylinders for containing metal powder are arranged on the flexible drying belt. During drying, the flexible drying belt is wound into the drying cavity, hot air in the drying inner cylinder is evenly transferred to the flexible drying belt, and the metal powder in the storage cylinders is evenly heated. In the rotating process of the drying outer cylinder, vibrating bodies at the inner bottoms of the storage cylinders enable elastic drying bags to vibrate up and down, the metal powder shakes in the centrifugal rotating process and also can vibrate up and down along with the elastic drying bags, and great fluctuation of the metal powder is facilitated. After drying is completed, the flexible drying belt is pulled out, ventilation and heat dissipation of the storage cylinders can be achieved, the cooling time of the metal powder is shortened, the metal powder in the storage cylinders can be conveniently guided out without opening the drying equipment, and energy conservation and loss reduction are achieved.

The invention discloses a flue gas purification and adsorption device before desulfurization and denitrification, and relates to the technical field of industrial flue gas purification devices. The device comprises a middle ash collecting bin, an arch breaking unloader, a centrifugal fan, a plurality of long-bag low-pressure pulse bag-type dust removers, a blowing device and an ash storage bin, wherein the arch breaking unloader is mounted at the lower end of the middle ash collecting bin; a discharge port of the arch breaking unloader is connected with an air inlet of the long-bag low-pressure pulse bag-type dust collector through a connecting pipeline; one end of the connecting pipeline is connected with an air outlet of the centrifugal fan; an air inlet of the centrifugal fan is connected with a pipeline for conveying flue gas; and a mixing pipe section is arranged on the connecting pipeline. Through the designed flue gas purification and adsorption device before desulfurization anddenitrification, fine dust and small particles can be effectively controlled and tar in flue gas is adsorbed, so that the purpose of removing pollutants is completely achieved, the purpose of protecting the next procedure is achieved, and the problem that an existing multi-stage filter screen cannot filter out the small particles and the tar is solved.

A residual heat generation system of signal pressure low parameter backheat comprises residual heat boiler, steam turbine, generator, condenser, water supply pump and water supplementary unit. It is featured as connecting above said equipment and units by pipeline, driving generator to generate power by steam turbine, setting water-supply heating unit between economizer of said boiler and water supply pump, setting main steam pressure of said boiler to be 0.5-2.45Mpa and applying 6-18deg.c as narrow point temperature of said boiler.

The invention relates to a reactor vented waste gas purification device and method. The purification device mainly comprises a vented waste gas check device, a gas bag collecting chamber, a high-rate waste gas dilution device and an optical pyrolysis oxidation device, wherein a reactor is connected to the gas bag collecting chamber through the vented waste gas check device, an outlet of the gas bag collecting chamber is connected to the high-rate waste gas dilution device; an outlet of the dilution device is connected to the optical pyrolysis oxidation device; an outlet of the oxidation device is connected to a gas emission outlet. The purification method comprises following steps: reactor vented waste gas is collected to the gas bag collecting chamber; waste gas concentration is reduced by the high-rate waste gas dilution device; gas with low concentration is subjected to optical pyrolysis purification. The reactor vented waste gas purification device and method have the advantages of being high in safety, good in stability, low in cost, high in purification efficiency and free of secondary pollution.

The invention discloses a krypton-xenon gas purification method and device. The problems that gas production indexes of existing krypton-xenon gas purification cannot reach the standard, the equipment is short in service life and is inconvenient to overhaul and the like are solved. According to the technical scheme, the krypton-xenon gas purification device comprises a first-stage reaction tube and a second-stage reaction tube, which are connected in series, wherein the first-stage reaction tube and the second-stage reaction tube are arranged in a heater; and the outlet of the second-stage reaction tube is sequentially connected with a hydrogen adsorber, a cooler and a precise filter. The krypton-xenon gas purification device is simple in structure, easy to dismantle, low in loss, simple and convenient to maintain, and low in operation cost; the gas purification meets the 2006-edition new national standards of krypton and xenon; the system is stable; and the equipment is long in service life.

The invention discloses a DVR multipath audio and video recording method. The method comprises the steps of collecting and buffering all the input audio data sections to an audio data buffer area, collecting and compressing a part of input video frame compression data into a video data buffer area, periodically checking whether data exist in the buffer areas in a timing mode, and reading the data of the buffer areas to a storage card. The method is quite suitable of application of DVR multipath audio and video record large in video frame rate fluctuation range, is wide in frame rate fluctuation range, and can reach 80% in fluctuation range, namely, video still can maintain a good time synchronous effect when being changed into 6frames / second from original preset 30frames / second in frame rate.

The invention relates to a comprehensive control method for keeping a fixed-point height of an airship in the stratosphere, which is used for keeping the fixed-point height of the airship in the stratosphere by adopting a combined mode of pressure adjustment and thrust vector. The method has the advantages of small fluctuation range of the fixed-point height and great corresponding reduction of the reserve volume of an auxiliary ballonet. To be explained, the application of the thrust vector does not increase extra energy consumption because the airship in the stratosphere always keeps a certain thrust in a fixed-point flight in order to overcome the wind resistance; According to the method, only the direction of the thrust is changed and an increased net buoyancy is balanced by utilizingthe component in the vertical direction, which can result in that the component in the horizontal direction cannot overcome the wind resistance so that the position precision of the airship in the stratosphere in the horizontal direction cannot be kept; however, in terms of engineering application, the expense of a little horizontal positioning precision is worthy because the fixed-point height position of the airship in the stratosphere is far more important than the horizontal position precision thereof; and the airship in the stratosphere can flexibly fly to a fixed-point position once thetemperature returns to normal.

The invention discloses a powder metallurgy drying equipment for metal product production, which belongs to the technical field of metal product production. A flexible drying belt is added in the drying cavity formed by the drying outer cylinder and the drying inner cylinder, and a plurality of drying belts are arranged on the flexible drying belt. In the storage tube loaded with metal powder, when drying, the flexible drying belt is rolled into the drying chamber, the hot air in the drying inner tube is evenly transferred to the flexible drying belt, and the metal powder in the storage tube is evenly heated, and the drying process is completed. During the rotation of the outer cylinder, the vibration body at the bottom of the storage cylinder makes the elastic drying bag vibrate up and down. The metal powder not only shakes during the centrifugal rotation, but also vibrates up and down with the elastic drying bag, which is beneficial to the large fluctuation of the metal powder. When drying After the completion, the flexible drying belt is pulled out, which can not only realize the ventilation and heat dissipation of the storage tube, shorten the cooling time of the metal powder, but also do not need to open the drying equipment to facilitate the export of the metal powder in the storage tube, saving energy and loss.

The present invention provides a backlight, a display panel and a display device, The backlight includes: a first light source and a second light source, the brightness of light emitted from the first light source is different from that of light emitted from the second light source; and a light guide plate, the first light source and the second light source are disposed above the same end surface of an edge of the light guide plate, and light-emitting surfaces of the first light source and the second light source face the end surface of the edge of the light guide plate, a light mixing structure is disposed on the end surface of the edge of light guide plate and is capable of mixing the light emitted from the first light source and the light emitted from the second light source into light with uniform brightness.

The invention provides a top cover assembly and a power battery. The top cover assembly comprises: a cover plate, wherein one surface of the cover plate is provided with an accommodating groove, and the bottom wall of the accommodating groove is provided with an explosion-proof hole; an explosion-proof piece which seals the explosion-proof hole, wherein a groove is formed in the explosion-proof piece, the face, provided with the groove, of the explosion-proof piece faces the explosion-proof hole, the groove is communicated with the explosion-proof hole, the outer edge of the groove abuts against the inner wall of the containing groove, the size of the groove is larger than that of the explosion-proof hole, and a through groove is formed between the explosion-proof piece and the bottom wall of the containing groove; and a weak part arranged on the bottom wall of the groove, wherein the weak part is exposed in the explosion-proof hole. By increasing the distance between the weak part and the inner wall of the groove, a through groove is formed between the explosion-proof piece and the cover plate, so that when gas breaks through the weak part and pressure or heat is released through the anti-explosion hole, the through groove can play a role in providing blasting buffering, the actual blasting opening pressure value of the explosion-proof piece is within a stable range, and the explosion-proof piece is prevented from being opened in advance or delayed.