Process and a device for cleaning inner or outer walls of vertically extending or inverted tubes of heat exchangers,申请号US19870068887-传众专利搜索

Process and a device for cleaning inner or outer walls of vertically extending or inverted tubes of heat exchangers

申请公布号：US4831969(A)

申请号：US19870068887

申请日期：1987.06.29

申请公布日期：1989.05.23

申请人：

MAN GUTEHOFFNUNGSHUETTE GMBH

发明人：VOLLHARDT, FROHMUT;KRAMER, HANS

分类号：B08B7/02;B08B9/02;B08B9/027;F23J3/02;F28G7/00

主分类号：B08B7/02

摘要：A process and a device for cleaning inner or outer walls of vertically extending or inverted tubes of heat exchangers and especially for cleaning tubes in trash incinerators. The process involves imparting kinetic energy to the tubes in an axial direction and then suddenly stopping the tubes to shake loose dirt and the like. The device for the process includes arranging a plurality of rows of vertically extending tubes such that the tubes move upwardly and downwardly in the direction of the axis of the tubes. The tubes advantageously include their own lower distributors and upper headers. These distributors and/or headers rest on a movable cam or cam plate which, for example, may be rotated so that a radially extending offset of the shoulder of the cam permits the cam to lift the upper headers upwardly to a height at which point they are suddenly dropped. In an alternative embodiment, the upper header tubes are raised or lifted at their ends by a pneumatic or hydraulic piston cylinder, and the tubes are then lowered by the acceleration of gravity.