75results about How to "Reduced drop rate" patented technology

The present invention is to provide a hybrid core rope which does not require maintenance or a hybrid core rope capable of reducing a maintenance task. The hybrid core rope includes a resin solid core in which a plurality of spiral grooves is formed in the longitudinal direction on an outer peripheral surface thereof, a plurality of fiber bundles respectively spirally wound around the outer peripheral surface of the resin solid core along the plurality of spiral grooves, the fiber bundles having thickness to fill the spiral grooves, and a plurality of steel strands spirally wound around the outer peripheral surface of the resin solid core around which the fiber bundles are wound. The fiber bundles and the strands are respectively wound so as to have angles which are not parallel to each other.

The invention relates to a gasoline detergent which can reduce deposited matters in the firebox of the gasoline motor. The detergent includes a high-surfactivity polyisobutene amine, a kind of polyether carrier liquid with excellent oil solubility, and cosolvent, antioxidant, anti-rust agent, preservative, and demulsifier thereof. The weigh percentages of the above components are that polyisobutene amine is 15-30 percent; polyether carrier liquid is 30-45 percent; and cosolvent and other functional agents are 30-50 percent. When 400-600ppm dosage of the detergent of the invention is added into the commercial car gasoline, not only the oil nozzle and the air inlet valve in the fuel gas inlet system of the motor of the car can be inhibited and cleaned, but also the deposited matters in the firebox of the gasoline motor can be obviously reduced. The increment of deposited matters of the car gasoline using the detergent of the invention in the firebox can be 50 percent above less than the increment of deposited matters of the car gasoline containing the detergent on the market in the firebox.

The invention relates to a two-way two-tube forward converter topology, its main circuit composed of power supply, four power diodes, two primary side clamping diodes, two serial capacitances, a main power transformer composed of primary winding and secondary winding with a secondary side composed of a rectifier with two rectifier diodes and an output filter capacitance. It remains the advantages of low primary-side voltage stress of a two-way two-tube forward converter, no direct turn-on of bridge arm, high reliability, etc; compared with general two-way two-tube forward converters, it has only two clamping diodes and simple structure; it adopts magnetic integration technique of transform, further reducing the bulk and enhancing power density of transform. It not only implements zero voltage turn-on and turn-off, but also basically eliminating voltage peak of diodes in the secondary rectifier by the clamping action of filter capacitance, having very high efficiency.

The invention discloses an inverse emulsion drag reduction agent for fracturing a shale gas by using quick water and a preparation method thereof, and relates to the technical field of petroleum engineering. The inverse emulsion drag reduction agent is a macromolecular water soluble polymer which is prepared from acrylamide, sodium acrylate and dodecyl methacrylate copolymerized in an inverse emulsion, and azo diisobutyl hydrochloride and sodium hydrogen sulfite as complex initiation systems. A long-chain hydrophobic monomer is introduced into the drag reduction agent, so that the shear resistance of the drag reduction agent in a high displacement pump injection process is improved, meanwhile, the drag reduction agent is prepared from the inverse emulsion in a polymerization manner, the product is a liquor and instant, the liquor demands of a continuous mixed construction technology for fracturing the shale gas are met, the dosage for field use is 0.06-0.8% of mass of clean water, and the drag reduction rate can be up to 73%.

The invention discloses a bottle washing holder comprising a nozzle, a bearing body, a small shaft, a roll-over stand, a sliding yoke, a disinfectant fluid inlet and a chuck. One end of the roll-over stand is arranged at the front end of the bearing body in a rotatable mode through the small shaft. The sliding yoke is installed on the lateral side of the roll-over stand. The sliding yoke is used for being installed on a guide rail and sliding along the guide rail when being in working, so as to guide the roll-over stand to roll over. The chuck is installed at the other end of the roll-over stand. The nozzle is installed on the upper side of the bearing body. The nozzle is connected with the disinfectant fluid inlet through a flushing medium channel. A guide device is arranged on the roll-over stand, wherein the guide device is used for improving the levelness of the chuck at a bottle in-out position and is matched with a guide groove fixed at the bottle in-out position. When the bottle washing holder is rotated to the bottle in-out position, a guide column on a guide pressing plate enters the guide groove, the levelness of the chuck at the bottle in-out position can be controlled through the guide pressing plate and the bottle loss ratio is reduced. In addition, by adding a U-shaped connection pipe on the bearing body, the flushing medium flowing channel is transited smoothly, health dead angles do not exist and cleaning is convenient.

A fuel cell management method includes removing droplets remaining in a fuel cell stack using air supplied to a cathode and hydrogen supplied to an anode. Hydrogen and oxygen remaining are removed in the fuel cell stack by stopping the supply of the hydrogen and the air, and the hydrogen and the oxygen in the fuel cell stack are chemically reacted to remove residual hydrogen and oxygen. Hydrogen is generated in the cathode of the fuel cell stack after removing the residual hydrogen and oxygen. The residual oxygen is additionally removed using the generated hydrogen, the generated hydrogen is absorbed on a surface of a catalyst layer formed on the anode and cathode and accelerating the chemical reaction of hydrogen and air.

The invention discloses a Sorona/bast fiber blended fabric preparation method. Bast fiber, Sorona fiber and other fiber are adopted for blending; the method particularly comprises the steps that the bast fiber is subjected to pretreatment, and the bast fiber, the Sorona fiber and the other fiber are subjected to mixing, opening picking, carding, combing, drawing, roving, spinning, self-spooling, slashing, weaving and quality inspection. Accordingly, the fabric not only has enough elasticity so as to ensure that the woven fabric is worn comfortably, but also has the advantages of being naturally antimicrobial, environmentally friendly and the like, and the certain health-care function is achieved; in addition, the product contains cotton, viscose, lyocell and other fiber, the product has the multifunctionality, and the adaptability of the product is improved.

The invention discloses an engine rotating speed control method, engine rotating speed control equipment, an engine rotating speed control system and an engineering machinery. The method comprises the following steps: receiving a current period displacement output value qm1 and a target displacement output value qp of a variable displacement pump of the engineering machinery; according to the current period displacement output value qm1 and the target displacement output value qp, calculating a displacement control quantity qt of the variable displacement pump; according to the displacement control quantity qt of the variable displacement pump, the maximum current Imax of a displacement control valve of the variable displacement pump, a start current Imin of the displacement control valve of the variable displacement pump and the maximum displacement qmax of the variable displacement pump, obtaining a control current It of the displacement control valve of the variable displacement pump so as to control the rotating speed of an engine by regulating the displacement of the variable displacement pump. According to the invention, the rotating speed of the engine can be timely controlled so as to be kept stable; not only is load sudden change integrally inhibited and the deceleration rate of the engine is effectively reduced, but also the additional problems of overshooting, oscillation and the like which are possibly generated by a deceleration prevention model in the prior art are reduced.

The process of producing superhigh molecular weight polyethylene product includes the steps of: material pre-treatment; adding LCP as modifying assistant into superhigh molecular weight polyethylene;feeding the mixture material into feeding port of the double screw extruder; smelting and denaturing the mixture material inside the double screw extruder; and extruding through the double screw extruder and one single screw extruder connected serially to the double screw extruder. The said production process has low production cost and high production efficiency and it is suitable for mass industrial production.

The present invention relates to an oriented silicon steel strip with diagonal stripes, and a production method thereof. The production method comprises: adopting a conventional production method to obtain an oriented silicon steel decarburization annealing steel strip; adopting a roll coating or spray coating method to coat a separation agent on the decarburization annealing steel strip, such that the coated pattern of the separation agent and the steel strip length direction present the angle alpha, wherein the angle alpha is more than or equal to 10 DEG and is less than or equal to 90 DEG or the angle alpha is more than or equal to -90 DEG and is less than or equal to -10 DEG, preferably the angle alpha is more than or equal to 30 DEG and is less than or equal to 90 DEG or the angle alpha is more than or equal to -90 DEG and is less than or equal to -30 DEG, the width of the coated pattern is 0.5-10 mm, and the height difference between the deep position and the shallow position of the coated pattern is 0.1-3 mm; and carrying out high temperature annealing, coating of an insulating coating and hot stretching annealing to obtain the oriented silicon steel finished product with diagonal stripes. According to the present invention, with the separation agent for forming the diagonal coated pattern on the steel strip surface, the air permeability of the steel coil during the high temperature annealing can be improved, the water vapor in the high temperature annealing coil can be rapidly discharged, the defective product reduction rate that the bottom layer defects, wrinkles and edge waves and other defects are reduced is improved, and the bottom layer color difference and the finished product strips color difference are significantly improved, such that the product quality of the oriented silicon steel can be increased under the premise of no significant increase of the cost.

The invention discloses a preparation method of ulagrass blended wrapping yarn. First, "boiling + carding + three times of alkali boiling + softening treatment" is used to obtain ulagrass fiber; then the ulagrass fiber cut to 45-50 mm and cotton are mixed and opened at a mass ratio of 70/30-10/90, Carding, drawing, and rotor spinning into core yarn materials, in which a roller carding machine is used for carding, and repeated opening and carding are used to improve the uniformity of subsequent yarns; Cotton blended core yarn is used for wrapping, and two or several pieces of pure cotton yarn, modal yarn, wool yarn, etc. are combined and wound on a bobbin in parallel as outer wrapping yarn. The speed ratio of hollow spindle speed and output roller is 500-900. The preparation of ulagrass blended wrapped yarn will broaden the application field of ulagrass fiber with thermal insulation and antibacterial properties.

The invention provides a curing pretreatment method for improving spinnability of hemp fibrils. The method comprises the following steps: selecting hemp fibrils with modal length of 27.5-30.0/mm and fiber number of 2900-3100/Nm; spraying an oil feeding and moistening softening and penetrating agent on the hemp fibrils, wherein the weight percents of the oil feeding and moistening softening and penetrating agent and the hemp fibrils are 6-8%; keeping the hemp fibrils with the oil feeding and moistening softening and penetrating agent in a sealed way, carrying out moisture curing for 70-120 hours at the temperature of 23-28 DEG C, controlling the moisture regain of the hemp fibrils between 12% and 15% and turning over the hemp fibrils up and down at least once during curing; loosening the hemp fibrils and removing impurities and short fibers to ensure the impurity ratio and short fiber ratio of the hemp fibrils to be less than 13.1/% and 27.2/% respectively. The method has the beneficial effects of obviously reducing the noil fiber rate of the hemp fibrils, improving the flexibility, ensuring the fibre strength required when the hemp fibrils are spun and improving the spinnability of the hemp fibrils.

The invention relates to the technical field of semiconductor manufacturing equipment, in particular to a wafer transmission device and method for a reaction chamber of the epitaxial growth equipment.The device comprises the reaction chamber and a carrying chamber which are both hollow square cavity structures, the reaction chamber and the carrying chamber are communicated through a gate valve, awafer supporting component is arranged in the reaction chamber, and a mechanical conveying component is arranged in the carrying chamber. The wafer supporting part comprises an inner ring base and anouter ring base, the main body of the inner ring base is a disc, a concentric boss is arranged on the lower end face of the disc, and the overall longitudinal cross section of the inner ring base isT-shaped. The outer ring base is in a circular ring shape, the inner ring of the outer ring base is stepped, the step size of the inner ring is matched with the outer edge size of the inner ring base,and the inner ring base is embedded in the outer ring base. The invention further provides the wafer transmission method for the reaction chamber. The wafer conveying device is easy to operate, is better in conveying stability and lower in wafer falling rate, and can satisfies the conveying requirements of the wafers of different sizes.

The invention provides a water planting method for cotton. The water planting method comprises the following steps: (1) germinating seeds; (2) manufacturing a culture box; (3) transplant seedlings; and (4) grow seedlings. According to the water planting method for cotton provided by the invention, the growing straightness of cotton is enhanced, the growth period of the cotton is prolonged, the rate of survival of cotton cultured indoors is greatly increased, the failure rate of cotton bus and bolls is reduced, and the yield of the cotton is increased.

The invention discloses a mechanical guardrail hoisting device for railway construction. The device structurally comprises an arbor wheel conveying belt, a rotation wheel governor box, an inclined rack handle rod, a plunger hydraulic cylinder, an alloy plunger cylinder, a joint roller wheel, a guardrail clamping plate, a hoisting groove base, a hinge rolling shaft column and a rubber fastening block. The arbor wheel conveying belt is inserted in the right side of the rotation wheel governor box. According to the mechanical guardrail hoisting device, the rotation wheel governor box is providedwith a piston cylinder jacking device, a rotary table conveying mechanism, an intermittent transmission device, a ratchet wheel rotation mechanism, a fan tray pendulum device, a sliding block clash device, an internal combustion cylinder friction device and a rubber pipe clamping mechanism. The guardrail hoisting device conducts hoisting by applying the hydraulic cylinder and controls the rotationspeed of a rotation wheel at the same time to achieve the effect of adjustment, the output rate of a rotation wheel conveying belt can be changed, in cooperation with the self-weights of different guardrails, compression resistance hoisting operation is conducted, by integrally simplifying a mechanical structure, the hoisting process is directly influenced by internal linkage transmission, and the off-road probability is greatly reduced.

The invention discloses an assistance acceleration wave power generator suitable for a rainy day. The assistance acceleration wave power generator suitable for the rainy day structurally comprises anoscillating water column chamber, an outlet cylinder, an assistance device, a power generator, a rain sheltering device, a support, a water turbine and a rotating shaft. The outlet cylinder is connected with the top of the oscillating water column chamber, and the water turbine is arranged inside the outlet cylinder and connected with the power generator through the rotating shaft. The power generator is fixedly installed on the top of the outlet cylinder through the support, the rain sheltering device is arranged on the top of the power generator, and the assistance device is connected with the outer side of the outlet cylinder. The rain sheltering device comprises electromagnets, a first mesh plate, a second mesh plate, a third mesh plate and a supporting rod. The assistance accelerationwave power generator suitable for the rainy day has the beneficial effects that the three mesh plates can be distributed in stagger through the effect of repulsion of the same poles of the electromagnets, and therefore the number of gaps is reduced, the rainwater falling rate is reduced, and the influence on the air rising process is reduced; and the water turbine is accelerated by the assistancedevice, the power generation efficiency is improved, and the phenomenon that the assistance device has a reverse effect is avoided through a switch control device.

The invention discloses a clamp suction row and a transfer clamp of the same, wherein suction disks of the clamp suction row are communicated to a negative pressure cavity in a suction disk cavity body, so suction force of each of the suction disks is balanced; through further dismountable design of a baseplate, suction disks can be added easily, so the clamp suction row can be applicable to circuit boards with different sizes; a negative pressure generator is provided with a silencer for noise reduction; a damping device is disposed to avoid press damage on a circuit board; a first clamp suction row and a second clamp suction row with an adjustable distance are disposed on the clamp suction row and can be applicable to the circuit boards with different sizes, and a fixed third clamp suction row is disposed for enhancing stability of adsorption and grabbing; meanwhile, the first clamp suction row and the third clamp suction row can be further disposed into an installation structure which can be easily adjusted manually, so applicability of the clamp is enhanced; a U-shaped photoelectric switch, a metal detection sensor, a diffuse reflection photoelectric switch, an ultrasonic sensor and a lower probing sensor are disposed; and safety and accuracy in automatic control of the transfer clamp can be further enhanced.

The invention relates to the field of circuit board electroplating technologies, in particular to a circuit board plating line intelligent board feeding and discharging method capable of accurate positioning. Circuit board feeding and discharging operation is conducted by a feeding and board discharging robot which replaces manual work on a plating hoist, transformation of the plating hoist is detected through a visual detecting device, angle offset is analyzed and calculated, and angle compensation is made by controlling the feeding and discharging board robot in the process of feeding and discharging board. The invention provides the circuit board plating line intelligent board feeding and discharging method capable of accurate positioning, 3D data can be acquired precisely by the visualdetecting device, meanwhile position compensation is conducted on plating of the transformative plating hoist, it is guaranteed that a circuit board can be stably clamped by a plating clamp, and therate of plate falling is greatly decreased in the plating step.

The invention discloses an aluminium plate strip AFC hot spray control system of an aluminium foil mill. The control system comprises an oil supply system, a rolling oil heating and cooling system, a temperature control system, an electric adjusting driving control system, a rolling oil hot spray system. The oil supply system is connected with the rolling oil heating and cooling system through a pipeline and then connected with the rolling oil hot spray system through a pipeline, the temperature control system controls the rolling oil heating and the cooling system, the electric adjusting driving control system controls the rolling oil hot spray system. The rolling oil hot spray system comprises four groups of oil separating pipelines, valves and nozzles and both sides of the nozzle beams are cooled and lubricated by the four groups of nozzles which are installed on the work rolls of the rolling oil hot spray system. After the rolling oil is heated to the normal temperature through the rolling oil heating and cooling system, the rolling oil is sprayed on the edge of the work rolls through the four groups of oil separating pipelines, valves and nozzles. The aluminium plate strip AFC hot spray control system of the aluminium foil mill improves the strip shape process control capability of the aluminum plate strip and foil and reduces unqualified scrap.