Silencer for internal equipment of ship

The invention relates to the technical field of ship noise reduction, and discloses a silencer for ship internal equipment, the silencer comprises an exhaust pipeline and a first reaction shell in the exhaust pipeline, the first reaction shell comprises an upper half part and a lower half part, refraction corner brackets are arranged on the inner wall of the upper half part, and each refraction corner bracket comprises a horizontal plate and a first hollow hole; a horizontal plate is arranged on the inner wall of the first reaction shell, a first hollow hole is formed in the axis position of the horizontal plate, a sound wave returning frame is arranged on the lower half part, the sound wave returning frame comprises a conical barrel and a parallel interlayer, and the conical barrel is arranged on the inner wall of the first reaction shell. According to the invention, when the high-intensity noise is weakened and the layered noise reduction effect of the refraction corner bracket and the sound wave return bra