3results about How to "Control load" patented technology

The invention discloses a sulfur-tolerant platinum-based catalyst and a preparation method thereof, and the preparation method of the sulfur-tolerant platinum-based catalyst comprises the following steps: weighing roasted ZrO2 as a carrier, weighing ammonium metatungstate, completely dissolving in deionized water, dropwise adding the solution until the carrier is completely immersed, and carrying out ultrasonic treatment; standing at room temperature, drying, and roasting in air at 500-600 DEG C to prepare a tungsten oxide loaded solid acid composite carrier WO3-ZrO2; and weighing chloroplatinic acid, completely dissolving the chloroplatinic acid in deionized water, dropwise adding the solution into the composite carrier, completely immersing the composite carrier, carrying out ultrasonic treatment, standing at room temperature, drying, and roasting in air at 250-350 DEG C to obtain the sulfur-tolerant platinum-based catalyst. The catalyst is simple in preparation method, has relatively strong tolerance to different sulfur species, and has good low-temperature catalytic performance and catalytic stability to low-carbon alkane.

A kind of oiling mechanism of mortar test mould, including bottom plate, linear module is installed in the middle part of the bottom plate, oil drum mounting plate is fixedly arranged on the sliding table of the linear module, dip oil drum is fixedly arranged on one side of the oil drum mounting plate, mortar test mould is used for being arranged on the other side of the oil drum mounting plate, oil liquid is carried in the opening inside of the middle part of the dip oil drum, the dip oil drum top is also provided with symmetrical clamping mechanism;Including oil immersion mechanism, the oil immersion mechanism includes lifting mechanism and the brush mechanism fixed on lifting mechanism, the bottom of the brush mechanism has sponge block, the utility model makes that the quality of coating oil liquid on mortar test mould is stable, efficiency is high, also will not cause health hazard to operator.

This invention discloses a jet-based rotor flow control system and method, relating to the field of helicopter aerodynamics. It includes an engine bleed air inlet, an air filter, a one-way valve, a high-pressure air source chamber, a pressure reducing valve, and a proportional valve, connected sequentially via pipes. The proportional valve is connected to a pressure damper and an air supply slip ring via pipes. The proportional valve is electrically connected to a power supply and a signal generator. The stator of the air supply slip ring is fixed to the helicopter fuselage, and the rotor of the air supply slip ring is connected to a hollow rotor shaft. The outlet of the rotor of the air supply slip ring is connected to an air supply pipe. An internal air pipe communicating with the air supply pipe is arranged inside the rotor blade. Multiple jet outlets are distributed on the upper wing face of the rotor blade. The aerodynamic excitation generated by this invention has advantages such as high strength, simple structure, and minimal impact on the original aerodynamic profile, showing significant advantages and application potential in rotor retreat blade stall separation control.