SU372114A1 - SEAL OF RIVER SHAFT - Google Patents

Description

:. . . ..

The invention relates to shipbuilding and is intended for use in ship devices operating under high pressure water conditions.

The propeller shaft seals are known, comprising a housing in which drainage channels and recesses are provided with springs mounted therein abutting on glasses with end sealing rings, interacting with two stop bushings surrounding the propeller shaft.

To increase reliability and convenience

installation in the proposed seal One of

Vipolien thrust bushings with extended HVR

; on a friend’s note

resistant sleeve and glasses with mounted

: .- ZAZRROI.-:. :.,.

In addition, between the inner surface of the housing and the outer surface of the second thrust sleeve, it is proposed to mount the cuffs, and the axial dimensions of the expansion unit are reduced.

FIG. 1 "A proposed seal, a longitudinal section; in fig. 2 - The position of the seal on the propeller shaft.

In the housing / there are two mechanical seals, including glasses 2, 3 and thrust bushings 4/5. Channels 5 and 7 are placed in the body of the case to drain water leaks. The cups have rings I and 9 at the working ends, made of an anthalfric material. The cups are installed in such a way that the rings are directed in opposite directions under the influence of the spring 10 and 11, which are arranged in the case and located in the holes in a checkerboard pattern. The stop sleeve 5 is fixed on the elongated tail 12 of the stop sleeve 4 and at the same time serves as the radial working surface of the reinforced cuffs 3 and 14. The sleeve and the cuffs together with the pressure ring 5 and the channels 16 serve to supply the buffer oil and form a lip seal part.

The cups 2 and 5 differ only in the diameters of the anti-friction rings 8 and 5 (the diameters of the ring 9 of the reserve seal are slightly smaller) and are sealed in the housing with rubber rings 17 liters 18.

The seal assembly 19 is installed in the nacelle body 20 and bolted 21 is attached to it. In housing 2Q, channels 1, 22, 23, and 24 are connected, respectively, with channels 6, 7, and 16 m of diversion of water leaks and supply of buffer oil. Rubber rings 25 serve to seal the cavities of the landing bore of the body 20. After mounting the seal, the propeller 27 and the nut 28 are secured to the row shaft 26. The seal prevents water from penetrating into the internal cavities and mechanisms of the propeller, as when rotating,

and 1f stopped by the rowing shaft. Water. In the gap 29 between the rowing vynt to the gondola enters the entrance to the seal assembly and fills the cavity of the main mechanical seal, f 1r for 1 0 work, the main mechanical seal works with a small amount of leakage. These water leaks are diverted along channels 6 in the hull / s further to the corresponding channel 22 to the vessel's propulsion system. In the case of an increase in the volume of flowing water (over 10 l / h), the axial mechanical seal is considered to be existing Ji3 system, a serious leakage channel is removed, a high pressure is perceived as a backup mechanical seal. cuff 14 with the help of a krkkim ring 15..

Subject invention

Claims (2)

1. The lower propeller shaft containing a casing in which drainage channels are made and sealed with springs installed therein, abutting the glasses with endless sealing rings and interacting with the two. Resistant bushings, whip up shaft, characterized by the fact that, its aim is to increase reliability and convenience. For installation of the seal, one of the stop bushings is fitted with an elongated shank, on which the second stop sleeve is fixed and the cups with a gap are mounted. 2. Ulotaenii on p. I, characterized by the fact that, in order to understand the dimensions of the seals, between the inner surface of the housing and the outer lover of jinopiH.oft sleeve mounted cuffs. . /four J 2 27 eZ