40results about How to "Improve even distribution" patented technology

Some embodiments provide a proprietary 64-bit consistent distribution scheme that preserves the efficiencies of CARP while providing a significantly more balanced distribution of requests that is on par with schemes reliant on computationally expensive cryptographic hashes. The scheme performs hashing of requested URLs and identifiers of available servers over a 64-bit space while optimizing the hashing to remove computationally expensive operations. Some embodiments provide a variant of the scheme to provide a differentiated distribution on the basis of one or more differentiating factors. A first variant utilizes load factor values to adjust the resulting hashes and to produce a first distribution of differentiated content that varies from a second distribution of undifferentiated content. A second variant identifies requests for differentiated content from requests for undifferentiated content and utilizes a first scheme to distribute the differentiated content and a second altered scheme to distribute the undifferentiated content.

The invention relates to a friction material which comprises the following components in percentage by weight: 62-72% of copper, 6-15% iron, 2-6% of aluminum, 3-8% of tin, 1-5% of nickel, 3-10% of cyanite (Al2O3.SiO2), 2-7% of boron nitride, 8-16% of graphite and 1-4% of molybdenum disulfide. The process for manufacturing an aircraft braking disc made from the friction material comprises the following steps: mixing a mixture of the friction material, pressing and moulding, preparing a steel back, and pressurizing and sintering the aircraft braking disc. Compared with the prior art, the mechanical performance, the physical performance, the friction and wear resistance, the use reliability and the service life of the aircraft braking disc made from the friction material reach or exceed those of the imported aircraft braking pair, and the aircraft braking disc made from the friction material can completely meet the use requirement of the Boeing 737 aircraft.

The invention relates to a multi-air-duct star-shaped air supply device of a coke dry quenching oven and a method for cooling coke in the coke dry quenching oven, wherein a plurality of independent upper air chambers are respectively communicated with ring-shaped air ducts; a plurality of independent lower air chambers are respectively communicated with middle air supply ducts or center air supply ducts, the middle air supply ducts are communicated with a middle funnel cap, and the center air supply ducts are communicated with a center funnel cap; the middle funnel cap and the center funnel cap are arranged in the central part of the coke dry quenching oven from bottom to top in a concentric way; the middle funnel cap is positioned in the middle of an upper cone bucket, the center funnel cap is located at the upper part of the upper cone bucket, and the diameter of the middle funnel cap is larger than that of the center funnel cap; wind control devices are respectively arranged at wind supply pipe inlets of the independent upper air chambers and the independent low air chambers. By means of adopting a star-shaped multi-air-duct form for accurately supplying air in the coke dry quenching oven, all the air ducts are optimized, and local air supply regulation is realized; furthermore, multi-air-duct quantitative air supply is realized in the oven, so that the coke in the coke dry quenching oven is more evenly cooled; the multi-air-duct star-shaped air supply device is also capable of reducing coke drop resistance and improving the support strength of all the air ducts in the coke dry quenching oven.

The invention relates to the technical field of machine parts, in particular to a multifunctional anti-loosening bolt nut. The multifunctional anti-loosening bolt nut comprises a bolt jointed rod piece, a fastening nut and a locking nut, wherein a main body of the bolt jointed rod piece is provided with a fastening bolt jointed part; at least one end of the bolt jointed rod piece is provided witha locking bolt jointed part; the fastening bolt jointed part is provided with an external thread structure; the locking bolt jointed part is provided with an external thread structure or an inner bolthole structure; the screwing direction of the fastening bolt jointed part is opposite to the screwing direction of the locking bolt jointed part; a first inner hole and a second inner hole are formedin the locking nut; when the fastening bolt jointed part is of an external thread structure, the second inner hole is provided with an inner bolt hole structure; and when the locking bolt jointed part is of an inner bolt hole structure, the second inner hole is provided with an external thread structure. The self-loosening phenomenon of the bolt nut can be prevented from occurring and developing,thus preventing potential safety hazards even accidents from occurring. The multifunctional anti-loosening bolt nut has the functions of thread water prevention and dust prevention.

A scanner which replaces CCFL with LED as a light source so as to solve the problem of excessively long warm-up time of CCFL in the prior art is provided. Meanwhile, objects as rod lens, reflectors, brightness enhancement films (BEF), or diffusers may be applied to enhance and even the brightness of the LED.

The invention discloses a bidirectional silicon-controlled electrostatic protection device with high protection level. The bidirectional silicon-controlled electrostatic protection device comprises aP-type substrate, wherein an N-type buried layer is arranged in the substrate, an N-type deep well is arranged on the N-type buried layer, a first P well and a second P well are arranged in the N-typedeep well, a first P+ injection region and a plurality of N+ injection regions I are arranged in the first P well, a second P+ injection region and a plurality of N+ injection regions II are arrangedin the second P well, the first P+ injection region and all N+ injection regions I are connected and used as a positive electrode of the device, and the second P+ injection region and all N+ injection regions II are connected and used as a negative electrode of the device. The numbers of the N+ injection regions I and the N+ injection regions II can be increased or reduced according to differentprotection levels, the numbers of the N+ injection regions I and the N+ injection regions II are increased if the protection level is high, the uniform current distribution of the device is improved,and the robustness of the device is improved; and if the protection level is low, the numbers of the N+ injection regions I and the N+ injection regions II are reduced, and the layout area is reduced.

The invention relates to a device for conveying heated air to a person and comprises an air-permeable inner sheet and an air-impermeable outer sheet which are connected to one another by welds in order to form a panel-like shape in the inflated state. The welds produce a main duct having, viewed at the inlet end and in the non-inflated state, a main duct width. The main duct is delimited by at least one first series of elongate first welded strips, the first intermediate spaces which are in line with one another. The length of each of these first intermediate spaces, viewed in the non-inflated state, is in each case smaller than the main duct width. The length of each first welded strip is at least 15% of the main duct width and at most 80% of the main duct width.

The invention relates to a high-power chip flexible interconnection module and a processing method. The invention provides a more advanced surface interconnection technology to replace traditional lead bonding, and aims to solve the problems of reduction of conductivity and bonding strength and the like caused by thermal mismatching and growth of intermetallic compounds in aluminum wire bonding and realize an interconnection technology with lower impedance value, higher thermal conductivity and longer service life. The contact area between flexible copper foil and a surface of the power chip is increased, the uniform distribution condition of heat on the surface of the chip is effectively improved, hot spots on the surface of the chip are reduced, and meanwhile, the current-carrying capacity is improved by 30% compared with that of a lead bonding process. The high-power chip low-loss flexible circuit interconnection technology is of great significance for promoting realization of deployment of a new-generation remote sensing common platform and a high-resolution earth observation satellite in the morning and promoting early application of a wide bandgap semiconductor device in an aerospace electronic product, and also providing a reference for continuous improvement of the performance of a commercial power module.

The invention discloses a two-phase flow liquid distributor in the field of compressors, which comprises an inlet pipe, a front barrel, a rear barrel and branch pipes, wherein the inlet pipe, the front barrel and the rear barrel of which cross sections are of round structures are communicated in sequence and are coaxially arranged; the inside of the front barrel and the inside of the rear barrel form a hollow chamber; a plurality of liquid distributing holes which are communicated with the hollow chamber are uniformly formed in the top of the rear barrel at intervals in an equal angle; and one branch pipe is arranged on each liquid distributing hole. The invention has the advantages that the pressure drop can be reduced; noises are reduced; and the structure is simplified.

The invention relates to a gas-liquid distribution device applied to a filler partition board rectifying tower. The gas-liquid distribution device comprises a V-form gas distribution structure, a liquid distribution structure, a convex fixed structure and a base plate, wherein the V-form gas distribution structure comprises V plates and gas distribution caps and is made of a metal steel plate material, and rising gas is uniformly distributed to two sides of a partition board by the gas distribution caps of the V-form gas distribution structure; the liquid distribution structure is formed by uniform liquid descending tanks, and descending liquid flows through liquid descending round holes in the liquid descending tanks and then is distributed to a lower end of the gas-liquid distribution device in a linear manner; the convex fixed structure is just located at the upper end of the partition board to fix the position of the partition board; the base plate is a semi-circular steel plate, square holes and air inlets are uniformly formed in the base plate, and rising gas enters the gas-liquid distribution device through the air inlets in the base plate. According to the gas-liquid distribution device applied to the filler partition board rectifying tower, gas and liquid phases are effectively distributed on two sides of the partition board, the partition board in the center of the filler partition board rectifying tower is effectively fixed, and meanwhile, a wall flow phenomenon in the partition board tower is effectively alleviated; the gas-liquid distribution device is convenient to mount and maintain.

The invention discloses a nanogel inclined plane culture medium and a preparation method thereof and belongs to the field of microculture. Part of agar powder is replaced with part of nanogel particles and agarose gel on the basis of an ordinary inclined plane culture medium. Concretely, by mass percentage, first nanogel particles are used to replace 20-30% of agar powder, and then the agarose gel is used to replace 25%-35% of agar powder. The setting time and setting rate of the culture medium are effectively delayed, the thickness uniformity degree during inclined plane culture medium preparation is improved, the uniform distribution degree of culture medium nutrient substances is also improved, and thus accuracy of culture and subsequent test results is effectively ensured. Repeated testing is avoided, testing time is shortened, errors are reduced, and the precision degree of tests is improved. In addition, the preparation method is reasonable in design and simple and convenient to operate.

The invention discloses an internal combustion organization method of an opposed firing pulverized-coal fired boiler, and belongs to the technical field of boiler pulverized-coal combustion. Accordingto the method, part of fuel for combustion enters a hearth directly in a jet flow mode through a fuel jet nozzle of a lateral wall, is mixed with hot smoke generated by combustors of a front wall anda rear wall and is combusted, and the rest of the fuel enters through the combustors of the front wall and the rear wall and is combusted. The fuel is supplied from the lateral wall, so that mixing of part of the fuel and secondary air is postponed, fractional combustion of the fuel is realized, and the NOx generation amount is further reduced. Meanwhile, through combustion of the fuel near the lateral wall, uniformity of fuel horizontal distribution in a boiler combustion area can be realized, the problem of ash accumulation caused by non-uniform distribution of fly ash of a top horizontal flute inlet due to original combustion organization is relieved, and stable operation of a unit is facilitated. The internal combustion organization method of the opposed firing pulverized-coal fired boiler is simple in design, facilitates combustion organization adjustment, and is low in comprehensive operation cost.

The invention belongs to the technical field related to additive manufacturing, and discloses a bioactive Ti-Ta-Nb alloy bone implant and a forming method thereof. The method comprises the following steps that (1) powder raw materials which are uniformly mixed are provided, the powder raw materials are prepared in situ, the raw materials comprise Ta powder, Nb powder and pure Ti powder, in the powder raw materials, the mass percentage of the Ta powder is 20wt%-30wt%, and the mass percentage of the Nb powder is 15wt%-40wt%; and (2) the powder raw materials are taken as raw materials and are subjected to laser selective melting to form the bone implant based on a three-dimensional model of a defect part of a user, the bone implant is of a porous structure, wherein the Ta powder and the Nb powder are melted and achieve diffusion convection current under the action of laser beams, and the Ta powder and the Nb powder are induced to form a Ta2O5 thin film and a Nb2O5 thin film respectively.According to the bioactive Ti-Ta-Nb alloy bone implant and the forming method thereof, the cost is reduced, the flexibility is good, and the applicability is high.

This invention relates to plasma process circle coils mounted on the top cover of a reacting cavity, which are in a solid structure, the circles are placed on different planes and the centers of the circles are on a same axes, the larger of the diameter of a circle, the further away from the top cover of the reacting cavity is and notches are set on the same direction of the circles to form circle in-and-out ports, the outlet of a circle is connected with the inlet of the adjacent outer circle, the inlet of the most inside circle and the outlet of the most outside circle are taken as two lead ends of the plasma process coils to alter the distribution state of the electromagnetic field and increase the uniform distribution degree.

The invention discloses a flue gas purification tower, belongs to the technical field of flue gas purification equipment, and aims at solving the problem that the flue gas flow fields in the existing flue gas purification towers are non-uniformly distributed. The flue gas purification tower provided by the invention comprises a tower body, at least one gas inlet, at least one gas outlet, at least one active coke layer and a baffle plate, wherein the at least one gas inlet is formed in the bottom of the tower body; the at least one gas outlet is formed in the top of the tower body; the at least one active coke layer is located in the tower body; the baffle plate is arranged at a flue gas flow turning place of the gas inlet; the baffle plate is a straight plate, an arc plate, a straight-arc plate or a straight-arc-straight plate; the straight-arc plate comprises a straight section and an arc section which is connected with the straight section; and the straight-arc-straight plate comprises a straight section which is located in the vertical direction, a straight section which is located in the horizontal direction and an arc section which is connected between the two straight sections. The glue gas purification tower disclosed by the invention can enable a gas flue flow field in the tower to be distributed uniformly, so as to improve the glue gas adsorption efficiency in the coke layer.

The invention relates to a friction material which comprises the following components in percentage by weight: 62-72% of copper, 6-15% iron, 2-6% of aluminum, 3-8% of tin, 1-5% of nickel, 3-10% of cyanite (Al2O3.SiO2), 2-7% of boron nitride, 8-16% of graphite and 1-4% of molybdenum disulfide. The process for manufacturing an aircraft braking disc made from the friction material comprises the following steps: mixing a mixture of the friction material, pressing and moulding, preparing a steel back, and pressurizing and sintering the aircraft braking disc. Compared with the prior art, the mechanical performance, the physical performance, the friction and wear resistance, the use reliability and the service life of the aircraft braking disc made from the friction material reach or exceed those of the imported aircraft braking pair, and the aircraft braking disc made from the friction material can completely meet the use requirement of the Boeing 737 aircraft.

The present invention relates to a double water circuit cooling zone melting induction coil, which comprises a single-turn coil flat plate, wherein the single-turn coil flat plate comprises a coil flow collection ring and a coil inside-outside cooling water pipe, the inside-outside cooling water pipe surrounds and is welded on the periphery of the flow collection ring, the upper surface of the flow collection ring is provided with three steps, the diameters of the circles on which the three steps exist from the first step on the outer side to the third step on the inner side are progressively decreased, and the inclined surface positioned on the flow collection ring inner circle lower edge and obtained by connecting with the lower surface of the single-turn coil flat plate and the horizontal plane form a certain inclination angle. The double water circuit cooling zone melting induction coil has the following beneficial effects that: the growth of the large diameter float zone silicon crystal is easily achieved, the uniform distribution degree of the inside-silicon thermal field can be increased, and the crystal forming stability of the silicon single crystal can be increased.

The invention discloses an intelligent adjustment projection system, and belongs to the technical field of projectors, and the system comprises a projector, a projection transfer mechanism and a positioning mechanism, the top of the projector is fixedly connected with a mounting column, the projector is internally provided with a light condensation mechanism, one side of the projector is fixedly connected with a lens cone, and the other side of the projector is fixedly connected with a camera. The outer side of the second bevel gear is sleeved with a projection transfer mechanism, and the outer side of the projection transfer mechanism is sleeved with a positioning mechanism. According to the invention, by arranging the projection transfer mechanism, under the action of two reflectors, light emitted by the projector can be effectively refracted to other positions, by arranging a motor, the motor drives a clamping block to rotate during working, the motor drives a first bevel gear to move downwards to be engaged with a second bevel gear, and when the motor drives the first bevel gear to rotate during working, the motor drives the first fixing cylinder and the second fixing cylinder to rotate under the effect of the second bevel gear, so that the light projection position can be effectively adjusted, and the light can be effectively projected on the curtain through double adjustment.

The invention discloses a preparation method of an aluminum-based composite material. The preparation method of the aluminum-based composite material includes the following steps that A, a reinforcingagent is prepared, wherein ceramic particles, copper powder, iron powder and sodium bicarbonate are thrown into a ball mill to be ground, a granular assisting agent with the particle size being 3-5 mm is made, and a material of the ceramic particles is silicon carbide; B, casting is performed, after an aluminum ingot is molten, the reinforcing agent prepared in the A step is added, stirring and mixing are performed, and then pouring is performed so that the aluminum-based composite material can be obtained; and in the reinforcing agent, by weight, the copper powder accounts for 15-20%, the iron powder accounts for 15-20%, the sodium bicarbonate accounts for 20-30%, and the ceramic particles account for 30-50%. In the aluminum-based composite material produced through the preparation method, the ceramic particles are uniformly distributed, and the uniformity of the internal property of the aluminum-based composite material is good.

The invention relates to a composite nitrogen cored wire for steelmaking as well as preparation and use methods thereof. The composite nitrogen cored wire for steelmaking comprises an alloy bin, a blind plate, a gas bin and an iron sheet shell, the outermost layer is the iron sheet shell, the alloy bin and the gas bin are arranged in the iron sheet shell in the length direction at intervals, the alloy bin and the gas bin are separated through the blind plate, the circumferences of the blind plate are connected with the inner walls of the iron sheet shell, and the outermost iron sheet shell wraps and seals the alloy bin, the blind plate and the gas bin in the circumferential direction; and inner core raw materials are randomly distributed in the alloy bin formed by closing the iron sheet shell and the blind plate, and nitrogen is contained in the gas bin. The composite nitrogen cored wire provided by the invention can remarkably improve the uniform distribution state of microalloying elements in a molten steel bath while increasing nitrogen into steel, improves the utilization rate of alloy elements, reduces the use amount of the alloy elements and the steelmaking cost on the premise of ensuring the good performance of the steel, and is beneficial to energy conservation and emission reduction.

The invention discloses an electrolytic cell flow field plate structure, comprising: an electrolytic cell end plate (1); an electrolyte outlet (2) arranged on the electrolytic cell end plate (1); an electrolytic cell end plate arranged on the electrolytic cell end plate The electrolyte inlet (6) on (1), the electrolyte outlet (2) and the electrolyte inlet (6) are arranged symmetrically; the heat pipe (4) arranged on the end plate of the electrolytic cell (1), the heat pipe The condensation section of (4) is close to the electrolyte inlet (6), and the evaporation section of the heat pipe (4) is close to the electrolyte outlet (2). The flow field plate structure of the electrolytic cell provided by the present invention effectively reduces the temperature difference between the electrolyte outlet and the electrolyte inlet, improves the uniform distribution of the temperature on the end plate of the electrolytic cell, increases the electrolysis temperature, and effectively improves the operation of the electrolytic cell Efficiency: The temperature of the electrolyte outlet is effectively reduced, thereby avoiding the problem of electrolyte boiling at the electrolyte outlet and eliminating potential safety hazards.

The invention belongs to the technical field of petroleum industries, and specifically relates to an automatic vacuumizing and saturating device for a three-dimensional scale model for microbial oil recovery. The device comprises a vacuumizing unit, a formation water saturating unit and a control unit. The control unit is composed of a vacuumizing control device, a formation water saturating control device and an overpressure protective device, the vacuumizing control device controls the vacuumizing unit to achieve automatic vacuumizing of the model, the formation water saturating control device controls the formation water saturating unit to achieves automatic formation water saturating of the model, and the overpressure protective device controls pressure of the three-dimensional scale model when formation water saturating is conducted. The automatic vacuumizing and saturating device has the characteristics that the structure is simple, the automation degree is high, the operability is high, and the safety and the reliability are achieved; meanwhile, the vacuum degree when the three-dimensional scale model is vacuumized and the uniform distribution degree of formation water in the model when formation water saturating is conducted are enhanced, and therefore the accuracy and the reliability of a result of a physical simulation experiment for microbial oil recovery are enhanced; and thus the automatic vacuumizing and saturating device for the three-dimensional scale model for microbial oil recovery can be widely applied to three-dimensional physical simulation experiments for microbial oil recovery.

The invention relates to mowing equipment. The mowing equipment comprises a machine body, wherein a grass collecting bag and a mowing assembly used for cutting grass and feeding the grass into the grass collecting bag are arranged on the machine body, a uniform distribution assembly is arranged on the machine body, and the uniform distribution assembly comprises a uniform distribution rod rotationally connected to the machine body and a driving piece used for driving the uniform distribution rod to swing in the grass collecting bag; one end, close to the grass collecting bag, of the uniform distribution rod penetrates into the grass collecting bag. The mowing equipment collecting bag has the effect of improving the space utilization rate in the grass collecting bag.

The invention belongs to the technical field of evaporation equipment, particularly relates to a centrifugal film evaporator, and provides the following scheme aiming at the problems that a centrifugal film evaporator in the prior art is low in working efficiency, the inner wall of a machine body is inconvenient to thoroughly clean, residual materials are easy to appear, the subsequent material quality is influenced, and the use effect is reduced: the centrifugal film evaporator comprises an evaporator shell and a rotary drum; a motor is fixedly installed on one side of the evaporator shell; a main shaft is fixedly connected to an output shaft of the motor; a spacer bush is fixedly connected to the outer side of the main shaft in a sleeving mode; and an evaporation body is fixedly connected to the outer side of the spacer bush in a sleeving mode. The spacer bush is connected with the main shaft, so that the spacer bush and the evaporation body rotate along with the main shaft, the evaporation time of materials on the evaporation body can be shortened, a liquid film is uniform, and the evaporation efficiency and effect can be improved; and the materials are uniformly distributed by driving the material spray pipe to rotate, and the scraper blade is driven to rotate and vibrate to efficiently clean residual materials.

The invention relates to a gas-liquid distributing device applied to a packing partition-plate rectifying tower. The gas-liquid distributing device comprises a V-shaped gas distribution structure, a liquid distribution structure, an inverted-T-shaped fixing structure and a bottom plate. The V-shaped gas distribution structure is composed of gas distribution structure V plates and gas distribution caps and made of metal steel plate materials. Rising gas is evenly distributed on the two sides of a partition plate through the gas distribution caps of the V-shaped gas distribution structure. The liquid distribution structure is formed by evenly-arranged liquid falling troughs, falling liquid passes through liquid-falling circular holes in the liquid falling troughs to be distributed to the lower end of the device in a linear mode, and even distribution of the liquid is achieved. The inverted-T-shaped fixing structure is located at the right-upper end of the partition plate to achieve the effect of fixing the partition plate. The bottom plate is a semicircular steel plate provided with evenly-arranged square holes and evenly-arranged gas inlet holes, and the rising gas enters the device through the gas inlet holes in the bottom plate. By means of the gas-liquid distributing device, gas and liquid on the two sides of the partition plate are effectively distributed, and the partition plate in the center of the partition-plate rectifying tower is effectively fixed; meanwhile, wall flow in the partition-plate rectifying tower is effectively reduced, and installation and maintenance are convenient.