225 results about "Kerosene" patented technology

The utility model belongs to the field of hypersonic propulsion, particularly relates to a preheated liquid fuel single droplet generation system under a high-speed incoming flow condition, and aims to solve the problem that in the prior art, a system capable of illustrating different broken forms of preheated liquid fuel single droplets and a droplet breaking kinetic model under the high-speed incoming flow condition is lacked. The kerosene instillation test bench comprises a test bench, a high-speed incoming flow generation system and a kerosene instillation controller, the high-speed incoming flow generation system and the kerosene instillation controller are both fixedly arranged on the test bench, and the input end of the high-speed incoming flow generation system is communicated with the output end of the kerosene instillation controller. According to the method, different broken forms of a single droplet of the preheated liquid fuel and a droplet breaking kinetic model under the high-speed incoming flow condition are clarified, the understanding of the physical process of secondary atomization of transverse injection of different preheated liquid fuels under the high-speed incoming flow condition can be deepened, and meanwhile, a reference is provided for engineering application of an engine injection scheme.

The invention discloses a mixed waste plastic recovery and conversion reaction system which comprises a waste plastic raw material bin, a spiral feeder, a reaction furnace, a combustion chamber, a condensing device and an oil storage tank. The reaction furnace is sequentially provided with a feeding end, a reaction area and a discharging end, the reaction area comprises a plurality of reaction sections which are connected in series, the reaction sections are sequentially and continuously arranged along the length of a furnace body, and each reaction section is provided with a temperature control device which is independently opened and closed; the discharging end is communicated with a condensing device, and the condensing device is provided with a condensed kerosene outlet and a non-condensed pyrolysis gas outlet; the non-condensing pyrolysis gas outlet is divided into two paths, one path is communicated with the reaction furnace, and the other path is communicated with the combustion chamber. According to the invention, multiple reaction sections are combined and connected in series, multiple reaction mode combinations are provided, and high-value aviation kerosene can be produced. According to the invention, dechlorination can be effectively carried out before pyrolysis, and equipment corrosion, catalyst poisoning, secondary pollution and the like are prevented; according to the invention, the non-condensed gas is recovered for hydrogenation upgrading of products and self-heating of the system, so that energy is saved.

To provide a kerosene composition having proper combustion property as well as excellent lubricity and oxidation stability even when isoparaffin-based base materials are included as its main base material.SOLUTION: A kerosene composition is characterized by containing 15-50 vol.% of an isoparaffin-based base material containing sulfur components, isoparaffin, n-paraffin, and aromatic components at specific amounts, respectively, and having a density at 15°C and a distillation range being in specific ranges, respectively, as well as containing 25-45 vol.% of a hydrodesulfurization kerosene base material containing a specific amount of sulfur components and having a density at 15°C and a distillation range being in specific ranges, respectively, and 15-40 vol.% of a high-pressure hydrotreated base material obtained from a hydrotreated oil of a specified raw oil, containing specific amount of sulfur components, and having a density at 15°C and a distillation range being in specific ranges, respectively, and showing a kinematic viscosity at 30°C of a prescribed value or more.SELECTED DRAWING: None

The invention relates to the technical field of metal material surface modification, in particular to AlCrCuMoNi high-entropy alloy powder with high temperature, wear resistance, corrosion resistance and good heat conduction, a coating and a preparation method thereof.The high-entropy alloy powder with the particle size being 15-45 microns and suitable for thermal spraying is prepared through a mechanical alloying method, and then the high-entropy alloy powder is prepared through an oxygen-kerosene supersonic flame spraying technology; the preparation method comprises the following steps: spraying high-entropy alloy powder on the surface of a key part matrix by taking high-entropy alloy as a matrix, oxygen as a combustion improver, kerosene as a fuel, high-purity nitrogen as a powder feeding carrier gas and air as a cooling medium to prepare an AlCrCuMoNi HEA coating; al, Cr, Cu, Mo and Ni elementary substance powder is subjected to ball milling according to the required molar ratio through a mechanical alloying method, AlCrCuMoNi HEA powder is obtained, the coating is prepared through the hypersonic flame spraying technology, the method is suitable for improving the high-temperature abrasion resistance and hot corrosion resistance of the surfaces of key parts in the industries of energy, metallurgy, chemical engineering and the like, and the service life of boiler pipes is prolonged.

The invention provides a high-Mach-number boron powder ramjet engine based on air fluidization. The high-Mach-number boron powder ramjet engine comprises a boron powder conveying module and a kerosene conveying module. The boron powder conveying module can convey boron powder to the combustion part; the kerosene conveying module can convey kerosene to the combustion part; and the combustion part is provided with a stable combustion support plate. The problems of boron powder conveying and ignition stable combustion of the high-Mach-number boron powder ramjet engine based on air fluidization are solved, and incoming flow air is directly used as driving gas and fluidizing gas to fluidize boron powder fuel; kerosene is combusted, and injected fluidized air generates a high-temperature low-speed oxygen-enriched area behind the stable combustion support plate, so that removal of an oxide layer on the surface of the boron powder fuel is accelerated, and the combustion effect of the boron powder fuel is improved. The problem that in the prior art, a boron powder fuel conveying system is too complex to be integrated with an engine system is solved, the defects that reliable ignition and stable combustion are difficult to achieve due to the poor ignition combustion characteristic of boron powder fuel are overcome, and high integration of the boron powder fuel conveying system and the engine and ignition stable combustion of the boron powder fuel are achieved.

The invention discloses a kerosene sealing test clamp and method for a graphite sealing device. The test clamp is mainly composed of a sealing ring, a support, a screw, an extrusion flat plate, a nut, a base and an oil inlet nozzle. A cylindrical protrusion is arranged on the upper end face of the base, a cylindrical blind hole is formed in the top face of the cylindrical protrusion and serves as a cavity for containing the graphite sealing device, external threads are machined on the outer surface of the cylindrical protrusion, an oil liquid flow channel is formed in the bottom face of the cylindrical blind hole, the oil liquid flow channel extends to one outer surface of the base, and an oil liquid connector is formed in the surface of the oil liquid flow channel. The oil inlet nozzle is connected to the oil liquid connector, the sealing ring, the support and the nut are installed on the base, the screw is installed on the support, and the extrusion flat plate is placed between the screw and the cylindrical protrusion. During a sealing test, the requirement of the graphite sealing end face displacement is met by controlling the screw pitch of the screw, and axial sealing of the graphite sealing device is achieved through the nut and the sealing ring. Effectiveness of a graphite sealing test is guaranteed, the activity amount of the end face in the test process is accurately controlled, and the sealing effect is good.

The invention relates to the technical field of biofuels, and discloses an aviation kerosene biological alternative fuel based on multi-objective optimization, which is characterized in that a comprehensive selection index system comprising density, kinematic viscosity, thermodynamic characteristics (lower calorific value and hydrogen-carbon ratio) and molecular weight is established based on a multi-objective optimization model constructed by a genetic algorithm; the invention discloses a biological fuel formula for replacing RP-3 aviation kerosene by optimizing the design of biological alternative fuel components, the biological alternative fuel is prepared from the following components in parts by volume: 70-80 parts of second-generation biodiesel, 10-15 parts of tetrahydrofuran and 7-15 parts of isopropanol, the components are easy to obtain, the production process is simple, and the biological alternative fuel is suitable for large-scale production. The second-generation biodiesel, tetrahydrofuran and isopropanol are used as raw materials, the obtained biofuel has low kinematic viscosity, the low calorific value reaches 43 MJ / kg or above, the physicochemical property of the biofuel is similar to that of RP-3 aviation kerosene, and the biofuel has good substitutability and wide popularization value.

The invention relates to the cross technical field of solid waste resource utilization and low-carbon building material preparation, in particular to a seawater and fly ash coal-based solid waste material preparation method which comprises the following steps: step 1, carrying out ball milling modification on fly ash, and filtering impurities from seawater to obtain pretreated seawater; 2, adding a composite alkali activator into the pretreated seawater to prepare an excitation solution, and reacting with the modified fly ash at 60-70 DEG C for 90-120 minutes to obtain an active calcium ion dissolution solution; 3, a trioctylamine-sulfonated kerosene system with the volume ratio being 1: (3-5) is used for extraction for 40-50 min at the temperature of 35-40 DEG C, and chloride ions are removed; and 4, transferring the dechlorinated solution into a high-pressure reaction kettle, introducing carbon dioxide under the conditions of 0.8-1.2 MPa and 55-65 DEG C for mineralization for 180-240 minutes, and curing, drying and demolding the slurry to obtain the finished product material. And the material performance index meets the ocean engineering building material standard.

The present application relates to the technical fields of chemical synthesis, and discloses a kind of aviation kerosene production process and equipment, production process includes: carbon source gas, hydrogen, circulating gas is sent into main reactor reaction and obtains including hydrocarbon, methanol, CO, water and unreacted gas mixed component a;Mixed component a is sent into cascade reactor and is prepared to obtain including aviation kerosene component, light hydrocarbon component and water mixed component b, wherein light hydrocarbon component includes one or more of C2-C7 light hydrocarbon;Mixed component b is fractionally condensed to collect liquid phase and gas phase, and liquid phase is carried out three-phase separation to obtain aviation kerosene component, light hydrocarbon component and water respectively, aviation kerosene component is hydrotreated, fractionation to obtain aviation kerosene.The present application realizes the step-by-step control of reaction path in carbon source hydrogenation process through the synergistic effect of main reactor and cascade reactor, improves the selectivity of aviation kerosene target product, so that the obtained product meets the 3# aviation kerosene standard requirements in key indicators such as distillation range distribution, aromatic content and low temperature performance.

The application belongs to the technical field of aviation second power system, and discloses an airplane emergency power gas generating system and method based on water enhancement technology, wherein the system adopts fuel oil and high-pressure gas cylinder gas supply to combust in a gas generator, high-temperature and high-pressure gas is generated as the emergency power of the airplane; when the fuel oil and air are mixed and combusted in the gas generator, water is sprayed in the gas generator, water is used as the combustion coolant, and the compressed air amount used by the gas generator after combustion to generate unit gas is reduced. The aviation kerosene and high-pressure air are used as the fuel and oxidant, the fuel system has the advantage of good compatibility with the airplane, the compressed air amount used by the gas generator to generate unit gas is greatly reduced, the working time of the gas generator system is prolonged, the expensive catalyst is not used, and the problems of short service life of the gas generator system and high price of the catalyst of the traditional emergency power system are avoided.

The present invention provides a process to prepare kerosene, the process at least comprising the steps of: (a) providing a syngas stream comprising hydrogen (H2) and carbon monoxide (CO); (b) subjecting the syngas stream provided in step (a) to a Fischer-Tropsch reaction thereby obtaining a Fischer-Tropsch product comprising at least 50 wt.% of compounds boiling above 370°C; (c) separating the Fischer-Tropsch product into at least a C1-C4 fraction, H2O and a C5+ fraction; (d) subjecting the C5+ fraction as separated in step (c) to hydroprocessing thereby obtaining a mixture comprising at least a kerosene fraction and a heavier fraction; (e) separating the mixture as obtained in step (d) thereby at least obtaining the kerosene fraction and the heavier fraction, wherein the kerosene fraction has a Final Boiling Point of at most 302°C, preferably at most 300°C as determined by ASTM D86-18 and a flashpoint of at least 38°C as determined by IP170, wherein in the separation of step (e) the effective cut point, as determined by ASTM D2892-15 X2, between the kerosene fraction and the heavier fraction is at least 315°C and at most 330°C, and wherein in step (e) a kerosene yield of above 70 wt.% is obtained, based on the weight of the C5+ fraction subjected to hydroprocessing in step (d); (f) recycling at least a part of the heavier fraction as obtained in step (e) to the hydroprocessing of step (d); wherein step d) is carried out by contacting the C5+ fraction with a first catalyst, wherein the first catalyst comprises a molecular sieve with a pore size between 5 and 7 angstrom and a SiO2 / AlO3 ratio of at least 25 and a group VIII metal.

The invention discloses a filtering device suitable for aviation kerosene and a filtering method thereof, and belongs to the technical field of aviation fuel purification and filtration. The cylinder shell, the annular supporting ribs and the main filter material form a filter cylinder, kerosene penetrates through the intervals of the annular supporting ribs from outside to inside and gathers in the central positioning shaft to be led out, in a quasi working state, the filter assembly is disassembled and transversely inserted into an inner cavity of the filter element socket, one end of the filter assembly is fixed in the inner cavity of the filter element socket, and the locking piece is driven to amplify thrust through the force amplifier; the pressing rod linearly extrudes the filter element, the threaded transmission sleeve is rotated through the spiral driving rod, so that the piston pressing disc compresses the cotton core at a constant speed, residual oil is recovered from the bottom liquid drainage hole in the axial direction, and the cotton core is taken out after squeezing; the filter element of the same cylinder is not replaced, only the inner-end fine filter layer is replaced by the reducing fine filter layer with a smaller inner diameter, the through-flow area is suddenly reduced, the local flow speed is increased, the surface of a main filter material is reversely washed, and impurities fall off; the reducing step generates secondary high pressure difference, the fiber gap is further compressed, and the precision is improved.

The invention relates to the technical field of cutting fluid, in particular to cutting lubricating fluid as well as a preparation method and application thereof. The invention provides a special cutting lubricating liquid for finish machining of flutes on the inner wall of an aluminum alloy waveguide, the special cutting lubricating liquid comprises the following components in parts by weight: 89-91 parts of kerosene, 4-6 parts of No.40 engine oil, 0.8-1 part of rapeseed oil, 0.3-0.5 part of tung oil, 0.3-0.5 part of a flame retardant and 0.8-1 part of a penetrant, the composition comprises kerosene, engine oil, rapeseed oil and tung oil, and the flame retardant and the penetrant are supplemented. The lubricating fluid comprehensively solves the problems of built-up edges, oxidation corrosion and cutter wear in deep and narrow flute processing through complementation of advantages of all the components in permeation, lubrication, cooling and film-forming properties.

The article to which this design relates is a trivet that is attached to the top panel of a kerosene stove. This product is collapsible and can be disassembled for storage and portability when not in use.

The invention relates to a natural latex / graphene aerogel composite material for oil-water separation and a preparation method thereof. The preparation method comprises the following steps: firstly, preparing graphene oxide by an improved Hummers method, and then preparing the natural latex / graphene aerogel by combining a hydrothermal self-assembly method, a bubble template method and a freeze-drying method. And then adjusting the use amount of the natural latex and process parameters to optimize the performance of the natural latex / graphene aerogel, thereby preparing the natural latex / graphene aerogel with optimal performance. The preparation method has the beneficial effects that the problem of oil-water separation performance is solved, excellent adsorption performance is shown on organic reagents (ethanol, n-butane, liquid paraffin, trichloromethane, xylene, kerosene, edible oil, cyclohexane and the like), and the adsorption range is 43.82-189.86 g / g; after 10-20 times of cycle tests, the thickness recovery rate and the absorption capacity are still 92% or above of the initial value.

The invention relates to the technical field of biomass energy conversion, in particular to a method and system for preparing sustainable aviation kerosene through methanol based on biomass gasification. The method sequentially comprises the steps of biomass gasification, purification and proportion adjustment, methanol synthesis, methanol-to-olefin conversion, oligomerization reaction and hydrofining. The selectivity of a target component is effectively improved by regulating and controlling the H2 / CO molar ratio to 2.0-2.2 and realizing multi-section conversion and heat energy gradient recovery under middle and high pressure. The condensation point of the finished product can reach-48 DEG C, the aromatic hydrocarbon mass fraction is as low as 0.22%, and the aviation fuel standard requirements are met. The method has the advantages of being high in carbon utilization rate, excellent in product quality, low in energy consumption, suitable for large-scale operation and the like, and is suitable for green manufacturing of sustainable aviation fuel.

Proposed is a method for manufacturing aviation fuel, the method including preparing a feed, preparing an FT syncrude by subjecting the feed to a Fischer-Tropsch (FT) reaction, wherein the FT syncrude includes a first fraction and a kerosene fraction, the first fraction being a fraction with a boiling point range below that of kerosene, and the total content of the first fraction and the kerosene fraction in the FT syncrude being equal to or greater than 85 wt %, subjecting the first fraction to a reaction for increasing the boiling point, wherein the first fraction is converted to the second fraction, and the second fraction has a higher boiling point than the first fraction, and collecting aviation fuel from the kerosene fraction and the second fraction.

The invention belongs to the technical field of surface modification of boron powder, and particularly relates to a process for excessively adding boron powder into an energetic material. The process comprises the following steps: modifying a boron powder raw material by using a phthalic ester coupling agent as a modifier to obtain modified boron powder; the preparation method comprises the following steps: adding stearic acid into an energetic material, heating and mixing, and then adding a surfactant to obtain a mixed solution; and adding the modified boron powder into the mixed solution in batches, and stirring and dispersing until no particles or sedimentation is generated. After the boron powder is modified by the titanate coupling agent, the viscosity of the obtained modified boron powder system is remarkably reduced, and the modified boron powder system has good lubricity and rheological property. When the boron powder is used in an energetic material, the addition amount of the boron powder can be remarkably increased by adding the surfactant into the energetic material such as hydrocarbon fuel. The energy level of the liquid energetic material is improved by adding the modified boron with high energy density, and the maximum addition amount of the boron powder in aviation kerosene can reach 78.6% due to excessive addition of the boron powder in aviation kerosene.

The utility model provides a flow -equalizing pollution -bearing coalescing filter core belongs to aviation kerosene filtration purification technical field, including: filter core main part, filter core main part includes coalescing structure, and coalescing structure includes flow -equalizing orifice pipe, and flow -equalizing orifice pipe is provided with flow -equalizing opening, and the interval between flow -equalizing opening is reduced gradually from the direction of the inlet end of filter core main part to the other end thereof. The utility model discloses a flow -equalizing orifice pipe can flow aviation kerosene, effectively solve the problem of the flow of coalescing filter core inlet position too big in traditional technology, and the processing effect is not good, can greatly improve the overall dehydration effect of the utility model through the flow -equalizing orifice pipe. Through the special structure design of filter layer, the demulsification effect of filter core main part can be improved, and the pollution bearing capacity of coalescing filter core can be improved, the service life of the traditional coalescing filter core is solved, the structure design of filter layer can increase the service life of filter core, effectively reduces the economic loss and artificial cost caused by filter core replacement.

This item is an operating knob for use with a kerosene stove.

The article to which this design relates is a trivet that is attached to the top panel of a kerosene stove. This product is collapsible and can be disassembled for storage and portability when not in use.

The utility model discloses distillation equipment for biological aviation kerosene production, which relates to the technical field of distillation equipment and comprises an equipment main body, an electric push rod is fixedly connected to the outer wall of the equipment main body, and one end of the electric push rod is fixedly connected with a lifting plate slidably connected with the outer wall of the equipment main body. The outer wall of the lifting plate is rotationally connected with a pulling rod, and one end of the pulling rod is rotationally connected with a connecting rod. By arranging the pull rod, when auxiliary aviation kerosene production is carried out through distillation equipment, in order to improve the synchronous protection effect on a distillation head and the shielding protection effect on the top of a collecting box under the condition that an oil drum is switched for use, the lifting plate ascends through rotation of the pull rod; and a connecting rod fixedly connected with a limiting rod is driven to slide, so that a first protection plate moves to the position below the distillation head, a second protection plate moves to the top of a collection box, the situation that kerosene leaks and is wasted is reduced, and the aviation kerosene production efficiency of the distillation equipment is improved.

The invention relates to the technical field of oil tank detection equipment, in particular to a kerosene heater sealing performance detection device and technology, and the device comprises a detection pool, the detection pool is slidably connected with a mounting seat, the mounting seat is provided with a detection box, the detection box comprises four separation boxes, and the inner walls of the separation boxes are provided with a plurality of isolation bins. During detection, the four separation boxes tightly wrap an oil tank to form a plurality of independent isolation cabins, the oil tank is pressurized after being integrally soaked in water, if leakage occurs, gas enters the corresponding isolation cabins, bubbles rapidly escape from the slits in the surfaces of the isolation cabins, and the gas leakage is avoided. Due to the fact that the slits are extremely thin, external moisture cannot permeate, it is guaranteed that the interior and the exterior of the oil tank are dry, follow-up drying is not needed, the design solves the double problems that positioning cannot be achieved through a traditional pressure test, and the oil tank is prone to being polluted through a water immersion method, and detection efficiency and reliability are remarkably improved.

The application provides a crude oil scheduling fault-tolerant control method considering key properties of kerosene, an optimization scheduling scheme is generated by constructing a blending ratio and scheduling production model and dynamically correcting a model boundary and an operation constraint according to a real-time diagnosis result. When the system identifies that the crude oil property seriously deviates from the expectation, the blending ratio is re-optimized based on a safety constraint boundary, the optimal proportion of each component crude oil is determined, and then the scheduling production scheme is dynamically adjusted in combination with a storage tank state, so that the blended crude oil with stable properties is continuously provided under the abnormal working condition of the crude oil property. The method effectively guarantees the stable controllability of the kerosene product quality and improves the adaptability and reliability of production scheduling of a refining enterprise.

The invention discloses a microemulsion collecting agent for flotation of high-mud-content and high-oxidation molybdenite and preparation and application of the microemulsion collecting agent and belongs to the technical field of mineral processing, kerosene, xanthate or black powder collecting agents, a main emulsifier, a cosurfactant and water are mixed according to a certain proportion and then subjected to ultrasonic emulsification treatment, and the microemulsion collecting agent is obtained. According to the micro-emulsion collecting agent prepared through the method, after one-time roughing and two-time scavenging are conducted, the molybdenum recovery rate is remarkably increased compared with the molybdenum recovery rate when a kerosene collecting agent is singly used, the micro-emulsion collecting agent is simple in preparation method, high in emulsion stability, high in dispersity in ore pulp and free of slime interference, and the separation and recovery problem of high-argillization molybdenite is well solved.

The present application belongs to the technical field of biomass conversion and synthetic fuel, and relates to a method and system for preparing aviation kerosene by coupling green hydrogen and biomass gasification. The method comprises: preparing green hydrogen by electrolyzing water, and byproduct oxygen is used for biomass oxygen-enriched gasification; biomass is gasified in a fluidized bed at an oxygen partial pressure of 0.5-1 MPa and a temperature of 800-1000 DEG C to prepare syngas; the syngas is mixed with electrolytic hydrogen after pressure swing adsorption, methanol solution contact, low-temperature filtration and pressure reduction purification; the volume fraction of the feed hydrogen is stabilized at 70%-80% through online analysis and closed-loop control; crude oil is synthesized in a Fischer-Tropsch system taking methanol as a medium and carrier and oxalic acid as an adjusting agent; aviation kerosene fraction is obtained through rectification, and the heavy component is subjected to hydrocracking / isomerization by using a Pt-based catalyst. The present application effectively improves the stability of the feed hydrogen partial pressure and the product yield, and ensures the consistent quality of the aviation kerosene.

The application discloses a kind of short process from copper-molybdenum mixed concentrate high-efficiency recovery molybdenum method, management is simple and convenient, reagent cost is low, separation efficiency is high, strong adaptability, index is stable.Hydraulic cyclone classification overflow is dehydrated and depharmaceutical by thickener and then enters the flotation column to carry out fine selection I operation, fully gives the characteristics of fine particle level high-efficiency recovery of flotation column, uses diesel instead of kerosene as collector, improves the thickness and stability of foam.Hydraulic cyclone classification underflow and flotation column tailings are mixed into fine scavenging, one is to optimize the particle size composition, play the function of coarse particle level carrier, form carrier flotation, strengthen the recovery of fine particle level, two is to give full play to the performance of flotation machine, increase the recovery effect of coarse particle level, also avoid the wear and blockage of coarse particle level to the aeration device in the flotation column.Sweeping concentrate and fine scavenging tailings are combined and ground, through depth dissociation of intergrowth, effectively reduce the content of molybdenum in sweeping tailings, improve the comprehensive recovery rate of molybdenum.

The application belongs to the field of hydrometallurgy, and an embodiment provides a method for selectively extracting uranium from a high-concentration sulfuric acid medium. The method comprises the following steps: providing an extraction organic phase, wherein the extraction organic phase comprises a compound and a diluent; mixing and extracting the extraction organic phase and a solution, wherein the solution comprises uranium and acid, and the sulfuric acid concentration of the solution is at least 1 g / L, wherein the compound has a structure shown in formula I; formula I, R1, R2 and R3 are independently selected from any one of C3-C18 linear, branched or cyclic aliphatic hydrocarbon groups and C6-C18 aromatic groups; and the diluent comprises at least one of sulfonated kerosene, aviation kerosene, n-hexane and cyclohexane. The method of the embodiment of the application is simple and easy to implement, and can efficiently separate uranium from coexisting impurity metal ions.

The invention belongs to the field of unmanned aerial vehicle refueling, and particularly relates to an unmanned aerial vehicle refueling system and method. In order to reduce the occupied space of the refueling system and ensure that mixed fuel oil is evenly mixed, the unmanned aerial vehicle refueling system comprises a lubricating oil container, a refueling butt joint mechanism and an aviation kerosene container communicated with the refueling butt joint mechanism through a main pipeline, and a metering pumping mechanism is arranged on the main pipeline. The lubricating oil container is located above the main pipeline and communicated with the main pipeline through an auxiliary pipeline, and a flow valve is arranged on the auxiliary pipeline. The communicating position of the auxiliary pipeline and the main pipeline is located on the downstream of the metering pumping mechanism, and a pipeline stirrer is arranged on the portion, located between the communicating position of the auxiliary pipeline and the main pipeline and the refueling butt joint mechanism, of the main pipeline. The invention further correspondingly provides an unmanned aerial vehicle refueling method. In the invention, the gravity and the kinetic energy of the oil are reasonably utilized, so that only one metering pumping mechanism is utilized for refueling, the occupied space is reduced, and the oil is mixed twice to ensure uniform mixing.

The invention discloses an intelligent sampling system for measuring micro-water content of aviation kerosene. The system comprises an automatic sampler, a data line and an intelligent control terminal, the intelligent control terminal comprises a box body, a touch display screen, a controller and a power supply; the automatic sampler comprises a housing, a motor, a bracket, a limiting seat, a piston, a sealing ring and a needle cylinder. The method has the advantages that automatic extraction of aviation kerosene samples, rapid detection of micro-water content, visual display of detection results and data storage can be achieved, and the method is easy and convenient to operate, rapid in detection, accurate in result, convenient and rapid in data management, good in sealing performance, high in cost effectiveness and the like; the problems of oil leakage, unsmooth extraction, low precision and the like in the prior art are effectively solved.