PREVENTIVE DEVICE OF STACK RAIN

PURPOSE:To enable prevention of a stack rain at the size in height of the titled device of less than a half of a conventional one, by providing a zigzag waterdrop collecting plate in a cylindrical body, which is made into a passage of exhaust gas by connecting it with the upper part of a stack, in the direction of a flow of exhaust gas by partitioning the cylindrical body vertically. CONSTITUTION:The titled device is provided with a cylindrical body 12 which is made into a passage of exhaust gas by connecting with the top of a stack 10, an external cylindrical body 14 forming a space 13 opening upward between the external cylindrical body 14 and the cylindrical body 12 by covering the external circumference of said cylindrical body 12 coaxially, and a plurality of sheets of waterdrop collecting plates 15 which is partioning vertically the inside of the foregoing cylindrical body 12 and at least one side part of which is protruded within the space 13 from an opening part 12b formed on a circumferential wall of the cylindrical body 12. Then the waterdrop collecting plate 15 is formed in zigzag manner in the direction of a flow of the exhaust gas and an angle theta of inclination is given to the same. When the exhaust gas passes through the inside of a gas 28 between the waterdrop collecting plates 15, 15 adjoining to each other, a water drop which has ascended along with the exhaust gas adheres on slope parts 18, 19 of the waterdrop collecting plate 15, streamed into the space 13 as shown by a broken line and drained outside of the stack 10 through a drainage pipe 16.