Stern shaft seal gland for high speed ship

Abstract

The tail shaft sealing device, belonging to built-in integral water lubricating end face sealing device, includes moving ring seat, moving ring which is fixed on the shaft sleeve and rotated with tail shaft, static ring, static ring seat positioned by means of rotation-resisting pin, spring, spring seat fixed on the gland to make elastic compensation for static ring, friction pair is moving ring and static ring which are formed into end face seal, water inlet for water-cooling sealing device, tail shaft and tail shaft bearing seat. Its sealing effect is good, service life is long it can preventing internal pollution, has no need of liner bushing and its installation is simple and convenient.

Description

[0001] Technical field: The present invention relates to a high-speed spacecraft stern shaft sealing device, which is suitable for a water-lubricated and water-cooled stern shaft (bearing) type high-speed spacecraft stern shaft sealing device. Background technique: [0002] At present, most of the stern shaft sealing devices of water-lubricated and water-cooled stern shaft (bearing) ships use stuffing box type seals (commonly known as tallow packing type seals). As the stuffing box seal belongs to the radial seal type, not only the frictional resistance is large, the shaft power loss is large, and the stern shaft is severely worn, the shaft sleeve must be replaced frequently or the wear marks of the stern shaft must be polished; The water-lubricated and water-cooled stern shaft (bearing) type ship stern shaft has frequent radial runout and a very limited ability to run out; frequent adjustments will increase the complexity of the work of the management personnel too much, and i...

AI Technical Summary

Problems solved by technology

As the stuffing box seal belongs to the radial seal type, not only the frictional resistance is large, the shaft power loss is large, and the stern shaft is severely worn, the shaft sleeve must be replaced frequently or the wear marks of the stern shaft must be polished; The water-lubricated and water-cooled stern shaft (bearing) type ship stern shaft has frequent radial runout and a very limited ability to run out; frequent adjustments will increase the complexity of the work of the management personnel too much, and it is impossible to avoid the impact of river water and sea water on the ship. Pollution and corrosion of stern shaft compartment

The end face seal structure has Chinese patent ZL93225364.4, which is named "stern shaft seal device with bellows", but the structure is complicated and the sealing effect is poor

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