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A new style single outlet downhole hydrocyclone desander with spiral deflectors was designed according to the working characters of downhole desander, which combined hydrocyclone separation and sediment separation. Numerical simulation was conducted to analysis effect of produced liquid viscosity on flow characteristics and separating property. The results show that the tangential velocity of hydrocyclone desander decreases rapidly and the axial velocity and radial velocity of hydrocyclone desander changes slightly when the produced liquid viscosity changes in the range of 1.5mPa·s ~ 30mPa·s. Separation efficiency drops sharply and pressure drop decreases slightly with the increasing of produced liquid viscosity.

This paper presented a trajectory tracking algorithm applied for an intelligent driving system. Both the path tracking and longitudinal speed tracking controller are based on IMC algorithm and are carried out respectively. A simulation tool is introduced in this paper and some simulation tests were conducted to verify the proposed trajectory planning algorithm. The simulation results show that the proposed trajectory tracking algorithm is valid and good for the applications of vehicle driving in complex environment.

C6H5COONa, C10H10O, AESA, NNO diffusion powder, OP emulsifier, C6H5NO2 and so on in a certain proportion have been dissoluted and mixed evenly, then refined as the brightener needed. The contrast experiments with the obtained brightener to the sylvite galvanization and the sulfate galvanization separately are carried. It indicated that through controlling the quantity of adding the brightener, it can satisfy the demand that the surfaces of the sylvite galvanization specimen and the sulfate galvanization specimen are luminous, compact and well-leveling. It indicated that this brightener is one kind of sylvite galvanization and sulfate galvanization general brightener.