Direct-current distribution panel for helicopter

Abstract

The invention relates to a direct-current distribution panel for a helicopter. In the direct-current distribution panel, a bottom plate is a composite insulating bottom plate; a generator power circuit comprises a fuse, a mutual inductor and a first direct-current contactor; a generator power supply passes through the mutual inductor and is connected to the end B of the first direct-current contactor, and the end A of the first direct-current contactor is connected with the fuse by a first bus bar; a ground power circuit comprises a fuse and a second direct-current contactor; a ground power supply is connected to the end B of the second direct-current contactor by a second bus bar, and the end A of the second direct-current contactor is connected with the fuse by the first bus bar; a storage battery power circuit comprises a fuse, a countercurrent protector and a third direct-current contactor; the countercurrent protector is connected to the end A of the third direct-current contactor by a third bus bar, and the end B of the third direct-current contactor is connected with the end B of the first direct-current contactor by a fourth bus bar; and the first direct-current contactor, the second direct-current contactor and the third direct-current contactor are connected with a breaker assembly and a relay assembly to switch the generator power circuit, the ground power circuit and the storage battery power circuit.

Description

technical field [0001] The invention relates to a DC switchboard, in particular to a DC switchboard for a helicopter. Background technique [0002] The DC distribution board of a traditional helicopter has an aluminum base plate. Although it is light in weight, its insulation performance is not good, and the leakage current on the finished product is easily transferred to the casing by the fixing screws. In addition, the long-term friction between the wire and the aluminum base plate is easy to break the skin and cause electric leakage, causing potential safety hazards. In addition, the components on the traditional DC distribution board are connected independently, and the connecting parts are loose and messy, which is inconvenient to disassemble and maintain, and the connecting parts are easy to be lost, which is not suitable for use in the narrow space of the aircraft. Contents of the invention [0003] In order to solve the disadvantages in the prior art that ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the disadvantages in the prior art that the bottom plate of the DC power distribution board is an aluminum plate, which is easy to leak electricity, has low safety performance, and the connection structure of the components on the DC power distribution board is complicated, the connectors are numerous and easy to be lost, which is not conducive to disassembly and maintenance, etc., the purpose of the present invention is Provides a DC power distribution board for helicopters with compact structure, simplified connectors that are not easy to lose, easy disassembly and maintenance, no leakage of the bottom plate, and high safety performance

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