End-surface mechanical seal structure with sharkskin-imitated surface three-dimensional shape

Abstract

The invention discloses an end-surface mechanical seal structure with a sharkskin-imitated surface three-dimensional shape. The end-surface mechanical seal structure comprises a moving ring or a fixed ring as mechanical seal, wherein the outer ends of the seal end surfaces of the moving ring and the fixed ring are taken as high-pressure sides, namely upstream parts, and the inner ends of the seal end surfaces are taken as low-pressure sides, namely downstream parts; a circle of closed seal dam is arranged at the upstream high-pressure side of at least one seal end surface in the moving ring or the fixed ring, a plurality of upstream pump grooves are uniformly arranged on the circumference of the surface of the seal end surface, a first end of each upstream pump groove extends to the high-pressure side of the seal end surface, and a second end extends to the low-pressure side of the seal end surface; an area between two adjacent upstream pump grooves is a seal weir; micro convex body clusters with the sharkskin-imitated surface shape are processed on the bottoms of the grooves and the surfaces of the seal weirs; the micro convex body clusters are arranged in a staggered manner until the micro convex body clusters uniformly bestrew the whole seal weirs and the bottoms of the upstream pump grooves; and the micro convex body clusters are formed by a plurality of parallel micro convex body units. The end-surface mechanical seal structure has the beneficial effects that attachment, drag reduction, wear resistance and enhanced heat dissipation of marine fouling organisms are prevented through the sharkskin-imitated surface three-dimensional shape.

Description

technical field [0001] The invention belongs to the technical field of mechanical seal structure design, and in particular relates to an end face mechanical seal structure imitating the three-dimensional shape of the surface of shark skin. Background technique [0002] Compared with land, the marine environment has many particularities, so the working conditions of mechanical seals used in marine equipment are even harsher. In particular, the problem of marine biofouling has brought many hazards to the mechanical seals used in offshore equipment. Marine fouling organisms will adhere to the friction pairs of mechanical seals, which will accelerate the corrosion and wear of the seal end faces, resulting in mechanical seals. The sealing performance of the seal will be reduced, the service life will be shortened, and in severe cases, the mechanical seal will fail. In response to this situation, it is necessary to study a mechanical seal device that prevents marine fouling organ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects or deficiencies that the end face seals currently used in the ocean are susceptible to marine fouling organisms, the present invention provides a three-dimensional shark-skin-like surface that prevents marine fouling, reduces drag, wears wear, and enhances heat dissipation. End face mechanical seal structure

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