2results about How to "Optimize the matching relationship" patented technology

The present application relates to the technical field of oil casing, in particular to a titanium alloy threaded connection structure, comprising a pipe body and a coupling, the outer surface of the end of the pipe body is a male end, the male end has a male end thread and a male end sealing cylindrical surface, the inner surface of the coupling is a female end, the female end has a female end thread and a female end sealing cylindrical surface, the male end and the female end are connected through thread engagement, the stress uniformity, sealing performance and anti-sticking ability of the connection structure are improved through dynamic adjustment and optimization of each parameter of the thread, and safe connection and effective sealing of titanium alloy oil casing and oil pipes in extreme service environments are realized.

This invention relates to the field of gas turbine engine technology, specifically to a turboshaft engine aerodynamic adjustment system and its control method. The turboshaft engine aerodynamic adjustment system includes: a compressor; a particle separator with a first air intake on its inner flow channel wall; a first air conditioning flow path, one end of which is connected to the compressor and the other end to the first air intake, the first air conditioning flow path being adapted to adjust the flow rate of compressed air in the introduced airflow channel to adjust the flow field of the particle separator; a power turbine guide vane with a second air intake; and a second air conditioning flow path, one end of which is connected to the compressor and the other end to the second air intake, the second air conditioning flow path being adapted to adjust the flow rate of compressed air introduced into the inter-vane passage of the power turbine to adjust the flow function of the power turbine. The turboshaft engine aerodynamic adjustment system provided by this invention can actively adjust component characteristics according to changes in flight conditions and environmental factors, improving engine performance and environmental adaptability.