Shell-shaped mechanical seal ring with sector deep groove inside

Abstract

The invention relates to a novel seal ring structure capable of effectively reducing the heat distortion of a mechanical seal ring, which is characterized in that the external circle end faces (cylindrical surfaces) of a moving ring and a stationary ring of the mechanical seal ring are provided a plurality of sector grooves along the radial direction so that the seal ring becomes a hollow shell structure; and the sector grooves have accordant consistent sizes and are distributed evenly along a the circumferential direction, an axial flat plate reinforcing rib is formed between the grooves, the grooves are opened outwards, and the groove bottoms and the internal circle surface form arc-shaped reinforcing ribs. All the side walls (the reinforcing ribs, and the like) forming the sector grooves have an equal thickness a. The number of the sector grooves is not less than 12 and is increased along the increasing of the outside diameter of the seal ring. The novel seal ring structure effectively improves the cooling problem of the seal ring, and simultaneously improves the rigidity of the seal ring, reduces the heat and force distortions, strengthens the working stability of mechanical seal and prolongs the service life; besides, the novel seal ring structure can be applicable to the application field of all mechanical seals of liquid and gas media, in particular to the working conditions with high parameters (high temperature, high pressure and high speed).

Description

Technical field: [0001] The invention relates to the technical field of mechanical seals, and relates to a mechanical seal in which a certain number of fan-shaped deep grooves are radially provided on the outer circular end surfaces (cylindrical surfaces) of a moving ring and a static ring, and the deformation of the sealing end surfaces is reduced. Background technique: [0002] As the most common axial end face sealing device of rotating shaft, mechanical seal has been widely used in petrochemical, aerospace and other fields. With the rapid development of science and technology, the performance requirements for mechanical seals are increasing. Especially in the 1980s and 1990s, in order to be suitable for high-parameter (high pressure, high speed, high temperature) working conditions, people proposed non-contact mechanical seals. . At present, the research on mechanical seals mainly achieves "reducing leakage" and "improving the bearing capacity of fluid film" through the...

AI Technical Summary

Problems solved by technology

It is mainly aimed at the problem of heating and uneven heating that cannot be avoided by mechanical seals. Through the improvement of the structure of the sealing ring, the cooling effect is improved, thermal deformation is reduced, thermal cracking is avoided, the stability of the sealing work is enhanced, and the effect of end face modification is better played. More ideal mechanical seal

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