Novel blocking binary rotation flow central body structure

The invention provides a novel binary blocking rotational flow central body structure. The structure is mainly composed of a thin-wall square structure (1) and blocking rotational flow blade-shaped structures (2), wherein the thin-wall square structure (1) is arranged on the outer side and is used for fixing the blocking rotational flow blade-shaped structures (2), the blocking rotational flow blade-shaped structures (2) are arranged on the inner side of the thin-wall square structure (1), are circumferentially arranged along the thin-wall square structure (1) and are fixedly connected with the thin-wall square structure (1). Certain angles are formed between front-end sections and rear-end sections in the circumferential direction, and therefore the blocking rotational flow blade-shaped structures (2) can block front end hot-end components of an engine, and the invisibility function is achieved. According to the structure, the throat area adjusting range of a traditional binary plug type spraying pipe is not affected, the structure can be applied to other types of traditional binary spraying pipes for realizing the good invisibility function. The structure is simple, and invisible sawtooth shaping can be carried out.