2results about How to "Strengthen interconnection" patented technology

An integrated unit (220) for transmitting rotational electric power from an electric circuit to de-ice a propeller blade (1101, 1102) and a nose cone (110) of a turbomachine, comprising: - a rotary transformer (2221) comprising a static part and a rotating part; - a DC-AC voltage converter (2231) whose output is connected to the static part of the rotary transformer and whose input is intended to be connected to a DC power supply (2321), and - a power supply switch (2211) connected to the rotary transformer and configured to transmit electric power to at least one pair of propeller blades (1101, 1102) and a nose cone (110) of the turbomachine.

The application discloses a polymer catalyst containing a solvent monomer and a macrocyclic chelating ligand, and a preparation method and application thereof, and belongs to the technical field of epoxide carbonylation reactions. The catalyst is composed of a polymer carrier part and a metal carbonyl species. The polymer carrier is obtained by polymerization of a solvent monomer and a macrocyclic chelating complex through a free radical polymerization or a Heck coupling mode, or is obtained by polymerization of a solvent monomer and a macrocyclic chelating ligand through a free radical polymerization or a Heck coupling mode, and then loading a metal coordinated with the macrocyclic chelating ligand. The polymerizable solvent monomer in the catalyst provides a solvation environment, the macrocyclic chelating complex serves as a Lewis acid, and the metal carbonyl species serves as a carbonylation active center. The catalyst has excellent performance in the process of catalyzing conversion of an epoxide into a beta-lactone, and lays a foundation for industrial application of the epoxide carbonylation reaction.