4results about How to "Increase speed difference" patented technology

The microstructural centrifugal pump blade comprises a blade body, a mushroom-shaped pit array is distributed on the front edge of the suction surface of the blade body, a sharkskin placoid scale-shaped protrusion array is distributed on the tail edge of the pressure surface of the blade body, and preferably, the mushroom-shaped pit array and the sharkskin placoid scale-shaped protrusion array are distributed on the front edge of the suction surface of the blade body. The sharkskin placoid scale-shaped bulge array is positioned at the 1 / 3 part of the tail part of the pressure surface; the sharkskin placoid scale-shaped protrusion array microstructures are arranged on the tail edges of the blades, so that the blades can effectively optimize the flow characteristic of the surface of the impeller, the mushroom-shaped pit array microstructures are arranged on the front edges of the blades, the speed difference at an inlet of the impeller can be increased, and the two microstructures are compounded to improve the overall performance of the centrifugal pump; and particularly, the performance is obviously improved under the working condition of medium and high flow.

The utility model discloses a raw oil multistage atomizing nozzle structure for heavy oil catalytic cracking, which comprises a spray pipe, an outer cavity, an inner cavity and a spray head, the spray pipe is sleeved in the spray head, a plurality of spray holes distributed at intervals are arranged at one end of a spray head body far away from the spray pipe, and a first steam inlet pipe is arranged at one end of the spray pipe far away from the spray head. A first cavity channel, a second cavity channel, a third cavity channel and a nozzle are sequentially arranged in the spray pipe from left to right, and the first steam inlet pipe is communicated with the first cavity channel; a heavy oil inlet pipe and a third steam inlet pipe are arranged on the side wall of the spray pipe, a second steam inlet pipe is arranged in the heavy oil inlet pipe, an outer cavity is formed in the heavy oil inlet pipe, a flow guide cone is arranged at the tail end of the second steam inlet pipe, and bubble holes are formed in the pipe wall, close to the flow guide cone, of the second steam inlet pipe. An inner cavity of the second steam inlet pipe is communicated with the outer cavity through the bubble holes, and the heavy oil inlet pipe is communicated with the first cavity channel.

The utility model provides a kind of high purity graphite cyclone separation device of conical aggregate port belongs to separation device technical field, the high purity graphite cyclone separation device of this conical aggregate port includes cyclone separation cylinder, the air inlet pipe of being set in cyclone separation cylinder top, the exhaust pipe of being set in cyclone separation cylinder side surface and the conical aggregate port at cyclone separation cylinder bottom;The inner wall of the conical aggregate port is corrugated structure, the corrugated structure extends from the top of conical aggregate port to bottom, the air inlet pipe is communicated with cyclone separation cylinder interior, exhaust pipe is communicated with cyclone separation cylinder interior and position higher than conical aggregate port, the conical aggregate port bottom is equipped with discharge gate, the cyclone separation cylinder is cylindrical, air inlet pipe is obliquely inserted cyclone separation cylinder top, the center line of air inlet pipe and the center line of cyclone separation cylinder are set with acute angle, solve the technical problem that graphite particle is easily bounced and not completely separated due to the smooth inner wall of traditional conical aggregate port.

The present application discloses a multi-component gas mixing device and method under high pressure, which relates to the field of high-pressure gas preparation technology. The multi-component gas mixing device under high pressure includes multiple high-pressure storage tanks, the high-pressure storage tanks are provided with gas supply pipelines, the gas supply pipelines are provided with gas supply control valves, the multiple gas supply pipelines are commonly connected to an intake pipe, the two ends of the intake pipe are commonly connected to a gas mixing cylinder, the two ends of the intake pipe are connected to the same end of the gas mixing cylinder; one end of the intake pipe is connected to the outer peripheral wall of the gas mixing cylinder in a tangential introduction manner, and the other end of the intake pipe is connected to the end wall of the gas mixing cylinder; the end of the gas mixing cylinder away from the intake pipe is connected to a gas transmission pipeline. The present application can improve the mixing degree of gas during instant mixing preparation.