30results about How to "Reduce flow turbulence" patented technology

Nano-scale particles of materials can be produced by vaporizing the material and allowing the material to flow in a non-violently turbulent manner into thermal communication with a cooling fluid, thereby forming small particles of the material that can be in the nano-scale size range.

The apparatus for the collection and distribution of liquid in a column having at least one lamella collector and a distributor outflow system which is arranged below it. A side passage is contained in the or in each lamella collector and liquid outflow openings are arranged in a combination, as a result of which a hydrodynamic equalization for a liquid to be distributed results.

Disclosed is a fluid flow diverting device comprising a hollow main body and a plurality of blades protruding into the interior of the main body. The blades are positioned along the interior surface of the main body in multiple layers. The blades of each successive layer have a larger surface area and a larger entry angle of approach than the blades of a previous layer. The fluid diverting device can be inserted into any enclosed medium where fluids typically flow. The arrangement of blades diverts the flow of fluid in a way that creates a low pressure flow in the center of the enclosed medium. This low pressure flow is surrounded by high pressure flow, resulting in an increase in the swirling of matter and a pull of matter toward the center of the medium.

A medical device includes a curved tubular body configured for being used as an extravascular device to support vein maturation following the formation of an arteriovenous fistula. The tubular body is curved. The tubular body has an entrance angle of less than about 40 degrees to improve blood flow from the artery into the vein. And the tubular body includes a cuff or edge at the proximal end to stabilize the tubular body at the fistula.

The invention discloses a middle hole pressure storage static leakage-free oil sprayer, comprising a high speed solenoid valve, a locking screw sleeve, a tapered surface ball valve type switch valve, a control plunger and barrel assembly, an oil sprayer spring, a spring seat, an opening check ring, an oil sprayer body, an oil sprayer assembly and an oil nozzle locking cap; the tapered surface ball valve type switch valve is arranged in a concave cavity in the upper end of the oil sprayer body; the upper end of the oil sprayer body is connected with the high speed solenoid valve by a locking nut; the lower end of the oil sprayer body is connected with the oil nozzle assembly by the oil nozzle locking cap; the control pole plunger and barrel assembly is arranged in a central hole formed along the axis of the oil sprayer body; the central hole of the oil sprayer body and the control pole plunger and barrel assembly form a middle hole pressure storage cavity. The oil sprayer is simple in structure, low in machining cost and convenient to mount, so the production efficiency and product percent of pass are improved.

A rectifier of a vehicle wheel house to rectify an air flow in the wheel house housing a wheel includes an air passage configured to introduce running wind from a forward position of a vehicle; and an air blowing port which is formed at a partition wall member included in a partition wall of the wheel house on the vehicle body side, and configured to allow the running wind through the air passage to strike an outer circumferential surface of the wheel.

Disclosed is a water cooled exhaust assembly for use in association with an internal combustion engine in a marine environment. Inner and outer nested tubes are affixed to a mounting flange to form, in conjunction with an access port in the mounting flange, a cooling water flow channel to provide cooling of exhaust gases from the engine. The inner tube is formed with a flattened portion to produce a reduction in exhaust gas turbulence in the flow channel with a consequent increase in heat transfer capability.

The invention relates to a ceiling-mounted air conditioner panel and a ceiling-mounted air conditioner, wherein the ceiling-mounted air conditioner panel comprises an air inlet frame, an air outlet frame and a driving device arranged at the side of the air inlet frame far away from an air outlet duct, and the air outlet frame is driven by the driving device to move to form an air outlet communicating with the air outlet duct. In the invention, the driving device is arranged far away from the air outlet duct and the air outlet so that the air outlet duct and the air outlet can communicate with each other, and airflow from the air outlet duct can be discharged from the air outlet smoothly, in favor of enhancing the air volume, and airflow disturbance is reduced effectively; noise generated in turbulence is eliminated, and the condensation problem of the air outlet can also be solved.

The invention discloses an outdoor machine condenser and an air conditioner. The outdoor machine condenser comprises an inner row of condensation pipelines and an outer row of condensation pipelines, wherein first flow path refrigerating fluid inlets, second flow path refrigerating fluid inlets, first connecting pipe ports and super-cooling flow path refrigerating fluid inlets are sequentially arranged on the inner row of condensation pipelines from top to bottom; first flow path refrigerating fluid outlets, second flow path refrigerating fluid outlets, second connecting pipe ports and a refrigerating fluid main outlet are sequentially arranged on the outer row of condensate pipelines from top to bottom; and the refrigerating fluid main outlet is arranged at the upper end of the port at the bottom end of the outer row of condensation pipelines. Through raising the refrigerating fluid main outlet to be far away from the port at the bottom end of the outer row of condensation pipelines, the condensation pipeline at the bottom end, which is close to an outdoor machine chassis, has higher temperature and can effectively remove the residual frost at the bottoms of the chassis and the condenser, thus the freezing phenomenon is avoided, and the defrosting performance and overall operating performance of the air conditioner are favorably improved.

The invention relates to a diamond particle-reinforced aluminum-based brake wear-resistant material and a preparation method thereof, belonging to the field of wear-resistant materials. It is characterized in that the surface-modified 5-15μm diamond particles are mixed with Al-Cu alloy powder and placed in a forming mold. After vacuuming, use high-pressure gas to drive Al-Cu at 750-950°C and 0.1-2.0MPa. Si alloy melt infiltration forming, heat preservation and pressure holding for 5-30min, obtained composite material with a volume fraction of reinforcing phase of 5-25% applied to brake wear-resistant parts; realized precise control and optimization of the two-phase interface and microstructure of the composite material, Ensure that the excellent performance of the reinforced phase is stable and fully exerted under actual braking conditions. Compared with traditional steel materials, the composite material prepared by the present invention has significantly reduced density and greatly improved thermal conductivity while optimizing friction and wear characteristics, meeting the needs of braking materials and components for the development of transportation equipment in the direction of higher speed and lighter weight. Brand new requirement.

The invention relates to the technical field of wind power plant micro-siting, particularly provides a multi-target arrangement optimization method and system for wind power plant positions, and aims to solve the problems that in the existing wind power plant arrangement optimization process, the optimization target is single, and the influence of conditions such as wind conditions on the optimization process is not fully considered. In order to achieve the purpose, a genetic algorithm is applied, the target value of a first optimization target is controlled to be minimum, the target value of a second optimization target is controlled to be maximum, multi-target optimization is carried out on the arrangement scheme of the wind turbine generators in the wind power plant, a Pareto leading solution of multi-target optimization is obtained, and the arrangement optimization scheme of the wind power plant is determined. Through the configuration mode, in the optimization process of the arrangement scheme of the wind power plant, the total output power of the wind power plant and the front flow turbulence degree of the wind turbine generator are comprehensively considered, on the premise that the total output power of the wind power plant is ensured, the front flow turbulence degree of the wind turbine generator is reduced, and the service life of the wind power plant is prolonged; and the generating capacity of the whole life cycle is improved.

The invention belongs to the technical field of aluminum alloy gravity casting, and relates to a method for preparing an aluminum alloy engine cylinder cover by using a tilted pouring process. As thealuminum alloy engine cylinder cover is prepared by using the tilted pouring process, during pouring, a mold is tilted by 100 degrees, molten aluminum flows into a pouring basin 6, the mold is tiltedfrom 100 degrees to 0 degree, the molten aluminum flows into a cylinder cover cavity B 8 from a gas inlet side inner runner B 7 under the action of gravity, when the mold is tilted to 0 degree, namelythe mold is horizontal, the molten aluminum fills the cylinder cover cavity B 8, and finally continuously fills a riser B 9, then the aluminum alloy engine cylinder cover is formed, wherein the weight of the mold riser selected by the tilted pouring process is 9215 grams, the adopted casting time is 13 seconds, the solidification time is 180 seconds to 190 seconds, and the temperature of coolingwater is 30 DEG C. According to the method, the tilted pouring process is applied to the aluminum alloy engine cylinder cover, winding of a molten aluminum punching molding path can be reduced, too many twists and turns are avoided, and gas entrapment, heat dissipation and pressure loss are avoided; and problems about shrinkage porosity and exhaust side cold shuts are effectively solved, and the leakage test qualification rate is improved.