The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 2003
Filed:
Jun. 05, 2001
Pierre Jean, Le Habre, FR;
Dresser-Rand S.A., Le Havre, FR;
Abstract
To avoid formation of condensate or freezing in the tandem gas seals ( ) of a gas compressor ( ), such as for use in the compression of production of natural gas, when the compressor is temporarily stopped for maintenance or repair of the compressor or instrumentation, the settle out pressure (SOP) in the high pressure gas discharge line ( ) from the compressor ( ), arising from equalising the inlet and outlet gas pressures, is directed to cause gas to flow through a branch line ( ) to the outboard gas seal ( ), the gas being heated by an electrical heating coil ( ) and its pressure being reduced in a controlled manner. In this way, the gas is prevented from entering its liquid-vapor phase, so that no condensate can form in the inboard and outboard gas seals ( ).