Abb Oy

Erkki Ronkainen

Jussi Kiiskilä

Ville Kortelainen

Kai Karila

Tero Tamminen

Jussi Kiiskila

The arrangement comprises a seal () sealing a cylindrical rotating part () passing through an opening in a support structure in the vessel () against a medium (W). The seal () comprises a package of annular seal rings (). Each seal ring () comprises a seal part () being supported in a corresponding seal support part (). The seal support part () in the first seal ring () positioned closest to the medium (W) has the form of a cylinder (A) provided with an annular flange (B) at one end of the cylinder (A). The outer surface of the cylinder (A) is supported and sealed with an auxiliary seal () against the inner circumference of the opening. The annular flange (B) is supported against the support structure () surrounding the opening. There are adjusting means () for adjusting the position of the first seal support part () in relation to the support structure () surrounding the opening in order to relocate the seal () in an axial direction in relation to the rotating part ().

Seal arrangement in a vessel

The propulsion unit comprises a strut having an upper portion with an upper end portion passing through a passage formed between a first outer bottom and a second inner bottom in a vessel. The upper end portion is rotatable supported with a slewing bearing and sealed with a slewing seal. An upper slewing seal prevents lubrication medium leakage from the slewing bearing, whereby access to the upper slewing seal is provided in a radial direction from the interior of the vessel or from the interior of the strut in order to be able to service the upper slewing seal. A lower slewing seal is positioned at a vertical distance below the upper slewing seal and prevents sea water from penetrating into the hull of the vessel, whereby access to the lower slewing seal is provided in a radial direction from the interior of the vessel or from the interior of the strut in order to be able to service the lower slewing seal.

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Vantaa, Finland

Erkki Ronkainen