Seal Arrangement With Improved Shaft Bushing for a Rotating Ship Propeller Shaft

A seal arrangement for sealing a propeller shaft where it penetrates through the hull of a watercraft includes a shaft bushing around this portion of the shaft, one or more seal rings forming a seal around the shaft bushing, and a stationary support holding the seal ring or rings. The shaft bushing...

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Bibliographic Details
Main Authors FANGAUF CARLOS, ZIEMEN LARS
Format Patent
LanguageEnglish
Published 14.11.2013
Subjects
BLASTING
CYLINDERS
ENGINEERING ELEMENTS AND UNITS
EQUIPMENT FOR SHIPPING
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MARINE PROPULSION OR STEERING
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
PISTONS
RELATED EQUIPMENT
SEALINGS
SHIPS OR OTHER WATERBORNE VESSELS
THERMAL INSULATION IN GENERAL
TRANSPORTING
WEAPONS
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Summary:A seal arrangement for sealing a propeller shaft where it penetrates through the hull of a watercraft includes a shaft bushing around this portion of the shaft, one or more seal rings forming a seal around the shaft bushing, and a stationary support holding the seal ring or rings. The shaft bushing includes an outer bushing part made of a wear-resistant material, arranged coaxially around an inner bushing part made of a material having a high thermal conductivity. The thickness of the outer part relative to the thickness of the inner part is a ratio in a range from 1:10 to 1:3. The two-part shaft bushing can provide optimized thermal conductivity and heat dissipation away from the seal rings to the cool exterior water environment, as well as optimized wear-resistance, corrosion resistance and reduced friction for the seal rings.
Bibliography:Application Number: US201313868342