NONMETALLIC ANTI-EXPLOSION BALL Russian patent published in 2019 - IPC A62C3/06 

FIELD: methods of explosion protection.

SUBSTANCE: non-metallic anti-explosion ball comprises an equatorial ring, at least one longitudinal sheet, a south polar ring, a north polar ring, a first reinforcing part, a second reinforcing part and a third reinforcing part. According to the invention, the equatorial ring is perpendicular to the longitudinal sheet; the south polar ring and the north polar ring are on both sides of the equatorial ring, respectively; the south polar ring is at one end of the longitudinal sheet, and the north polar ring is at the other end of the longitudinal sheet. Equatorial ring, south polar ring and north polar ring are coaxial. In the axial direction of the equatorial ring, the projection of the south polar ring is inside the projection of the equatorial ring, the projection of the north polar ring is inside the projection of the south polar ring; the projection of the longitudinal sheet runs from the projection of the north polar ring to the equatorial ring. First reinforcing part is located on the longitudinal sheet between the north polar ring and the equatorial ring; and in the axial direction of the equatorial ring, the projection of the first reinforcing part is between the projection of the south polar ring and the projection of the equatorial ring. Second reinforcing part is located on the longitudinal sheet between the south polar ring and the equatorial ring; and in the axial direction of the equatorial ring, the projection of the second reinforcing part is between the projection of the south polar ring and the projection of the first reinforcing part. Third reinforcing part is located on the equatorial ring in the axial direction of the equatorial ring, one end of the third reinforcing part is connected to the first reinforcing part, and the other end of the third reinforcing part is connected to the second reinforcing part. In the axial direction of the equatorial ring, the projection of the third reinforcing part extends from the second reinforcing part to the equatorial ring; the plane in which the third reinforcing part is located divides by half the angle between the two longitudinal sheets adjacent to the third reinforcing part. Material of a non-metallic anti-explosion ball comprises a substrate, carbon fibres, optional carbon black, optional carbon nanotubes and an antioxidant; the substrate is at least one of a group consisting of nylon 6, nylon 66, polyphenylene sulphide, polyethylene and polypropylene; carbon fibres are chopped carbon fibres; carbon black is conductive; antioxidant is a combination of a sterically hindered phenolic antioxidant and a phosphite antioxidant. Based on the content of the substrate, the content of carbon fibres is 9–43 wt%, the content of carbon black is 0–19.6 wt%, the content of carbon nanotubes is 0–19.6 wt%, and the content of antioxidant is 0.5–0.8 wt%.

EFFECT: technological process of manufacturing a non-metallic anti-explosion ball is simple and the production efficiency is high.

7 cl, 2 tbl, 6 ex