Inclined penetrating type two-stroke diesel engine pipe joint suitable for ship

Abstract

The invention provides an inclined penetrating type two-stroke diesel engine pipe joint suitable for a ship. The pipe joint comprises an exhaust manifold (1) and a penetrating type exhaust branch (2).The penetrating type exhaust branch (2) communicates to the exhaust manifold (1), the penetrating type exhaust branch outlet (4) penetrates into the exhaust manifold (1) to form a penetrating type structure; the penetrating type exhaust branch (2) comprises a straight pipe section (201) and a bended pipe section (202); the axis of the bended pipe section (202) and the axis of the exhaust manifold(1) form a first included angle (300); the penetrating type exhaust branch outlet (4) is deviated to the downstream side of the exhaust manifold (1); and the straight pipe section (201) and the bended pipe section (202) are integrally formed. The inclined penetrating type two-stroke diesel engine pipe joint is reasonable in structure and can reduce local pressure loss of exhaust of a low speed two-stroke diesel engine for the ship effectively.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to an inclined penetration type two-stroke diesel engine pipe joint suitable for ships, in particular to an exhaust pipe joint capable of reducing partial exhaust pressure loss of a marine low-speed two-stroke diesel engine. Background technique [0002] Modern large commercial ships generally use large low-speed two-stroke diesel engines as the main propulsion power plant, and their performance determines the dynamic performance of the entire ship. At present, the low-speed machines produced by mainstream low-speed machine manufacturers all adopt straight-through exhaust pipe joints, that is, the branch pipe axis is arranged perpendicular to the main pipe axis. A novel marine engine exhaust pipe joint as disclosed in patent document CN202483690U includes: a small-diameter cooling water pipe, a connecting flange, a gasket, a connecting bolt, an air-water mixed ex...

AI Technical Summary

Problems solved by technology

[0003] However, in the traditional straight-through exhaust pipe joint, the high-speed gas discharged from the exhaust branch pipe will collide with the pipe wall of the exhaust main pipe, resulting in a large flow loss and complex vortex structures on both sides of the collision position.

These vortex structures will block the adjacent exhaust branch pipes, further increasing the flow loss inside the exhaust manifold.

Images