| 摘要 |
PURPOSE:To reduce the size and weight of a mixing elbow by wrapping an inner cylinder made of plate material for an exhaust passage of an engine with a split type outer cylinder made of plate material except the end of the entrance side for forming a cooling water passage. CONSTITUTION:A inner cylinder 11 made of stainless with an exhaust passage 10 formed inside is wrapped by an outer cylinder 13 except an end part 12 on the entrance side. The outer cylinder 13 is constructed of a stainless plate to be throttled and divided into two parts 20 and 21; its upper end is closed by an end wall 22, and to its lower end, an exit pipe 23 is welded. The inner cylinder 11 is penetrated through a hole 25 of the outer cylinder part 21, and the inside of the hole 25 is hermetically welded or brazed to the inner cylinder 11. Between the inner cylinder 11 and the outer cylinder 13, a cooling water passage (sea water) 26 is formed to conduct the sea water taken in from a sea water inlet 27. This construction permits to reduce the size and the weight of an elbow by making inner and outer cylinders of plate materials. |
