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Title: Double angle seal forming lubricant film

Abstract

A lubricated piston rod seal which inhibits gas leaking from a high pressure chamber on one side of the seal to a low pressure chamber on the other side of the seal. A liquid is supplied to the surface of the piston rod on the low pressure side of the seal. This liquid acts as lubricant for the seal and provides cooling for the rod. The seal, which can be a plastic, elastomer or other material with low elastic modulus, is designed to positively pump lubricant through the piston rod/seal interface in both directions when the piston rod is reciprocating. The capacity of the seal to pump lubricant from the low pressure side to the high pressure side is less than its capacity to pump lubricant from the high pressure side to the low pressure side which ensures that there is zero net flow of lubricant to the high pressure side of the seal. The film of lubricant between the seal and the rod minimizes any sliding contact and prevents the leakage of gas. Under static conditions gas leakage is prevented by direct contact between the seal and the rod.

Inventors:
 [1]
  1. (Troy, NY)
Issue Date:
OSTI Identifier:
865002
Patent Number(s):
4448424
Assignee:
Mechanical Technology Incorporated (Latham, NY) OSTI
DOE Contract Number:  
DEN3-32
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
double; angle; seal; forming; lubricant; film; lubricated; piston; rod; inhibits; gas; leaking; pressure; chamber; liquid; supplied; surface; provides; cooling; plastic; elastomer; material; elastic; modulus; designed; positively; pump; interface; directions; reciprocating; capacity; ensures; zero; net; flow; minimizes; sliding; contact; prevents; leakage; static; conditions; prevented; direct; rod seal; gas leakage; pressure chamber; direct contact; piston rod; provides cooling; sliding contact; elastic modulus; lubricant film; gas leak; gas leaking; net flow; seal form; /277/

Citation Formats

Ernst, William D. Double angle seal forming lubricant film. United States: N. p., 1984. Web.
Ernst, William D. Double angle seal forming lubricant film. United States.
Ernst, William D. Sun . "Double angle seal forming lubricant film". United States. https://www.osti.gov/servlets/purl/865002.
@article{osti_865002,
title = {Double angle seal forming lubricant film},
author = {Ernst, William D.},
abstractNote = {A lubricated piston rod seal which inhibits gas leaking from a high pressure chamber on one side of the seal to a low pressure chamber on the other side of the seal. A liquid is supplied to the surface of the piston rod on the low pressure side of the seal. This liquid acts as lubricant for the seal and provides cooling for the rod. The seal, which can be a plastic, elastomer or other material with low elastic modulus, is designed to positively pump lubricant through the piston rod/seal interface in both directions when the piston rod is reciprocating. The capacity of the seal to pump lubricant from the low pressure side to the high pressure side is less than its capacity to pump lubricant from the high pressure side to the low pressure side which ensures that there is zero net flow of lubricant to the high pressure side of the seal. The film of lubricant between the seal and the rod minimizes any sliding contact and prevents the leakage of gas. Under static conditions gas leakage is prevented by direct contact between the seal and the rod.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

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