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Title: Mechanical seal assembly

Abstract

An improved mechanical seal assembly is provided for sealing rotating shafts with respect to their shaft housings, wherein the rotating shafts are subject to substantial axial vibrations. The mechanical seal assembly generally includes a rotating sealing ring fixed to the shaft, a non-rotating sealing ring adjacent to and in close contact with the rotating sealing ring for forming an annular seal about the shaft, and a mechanical diode element that applies a biasing force to the non-rotating sealing ring by means of hemispherical joint. The alignment of the mechanical diode with respect to the sealing rings is maintained by a series of linear bearings positioned axially along a desired length of the mechanical diode. Alternative embodiments include mechanical or hydraulic amplification components for amplifying axial displacement of the non-rotating sealing ring and transferring it to the mechanical diode.

Inventors:
 [1]
  1. Salt Lake City, UT
Publication Date:
Research Org.:
EG & G IDAHO INC
OSTI Identifier:
874036
Patent Number(s):
US 6299174
Assignee:
United States as represented by Department of Energy (Washington, DC)
DOE Contract Number:  
AC07-76ID01570
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
mechanical; seal; assembly; improved; provided; sealing; rotating; shafts; respect; shaft; housings; subject; substantial; axial; vibrations; fixed; non-rotating; adjacent; close; contact; forming; annular; diode; element; applies; biasing; force; means; hemispherical; joint; alignment; rings; maintained; series; linear; bearings; positioned; axially; desired; length; alternative; embodiments; hydraulic; amplification; components; amplifying; displacement; transferring; sealing rings; alternative embodiments; axial displacement; improved mechanical; seal assembly; alternative embodiment; rotating shaft; mechanical seal; annular seal; positioned axially; close contact; rings positioned; rotating shafts; rotating seal; cation component; spherical joint; /277/

Citation Formats

Kotlyar, Oleg M. Mechanical seal assembly. United States: N. p., 2001. Web.
Kotlyar, Oleg M. Mechanical seal assembly. United States.
Kotlyar, Oleg M. Mon . "Mechanical seal assembly". United States. https://www.osti.gov/servlets/purl/874036.
@article{osti_874036,
title = {Mechanical seal assembly},
author = {Kotlyar, Oleg M},
abstractNote = {An improved mechanical seal assembly is provided for sealing rotating shafts with respect to their shaft housings, wherein the rotating shafts are subject to substantial axial vibrations. The mechanical seal assembly generally includes a rotating sealing ring fixed to the shaft, a non-rotating sealing ring adjacent to and in close contact with the rotating sealing ring for forming an annular seal about the shaft, and a mechanical diode element that applies a biasing force to the non-rotating sealing ring by means of hemispherical joint. The alignment of the mechanical diode with respect to the sealing rings is maintained by a series of linear bearings positioned axially along a desired length of the mechanical diode. Alternative embodiments include mechanical or hydraulic amplification components for amplifying axial displacement of the non-rotating sealing ring and transferring it to the mechanical diode.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}

Patent:

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