High Pressure Rotary Shaft Sealing Mechanism

Patent · Tue May 08 04:00:00 EDT 2001

OSTI ID:879596

Dietle, Lannie ^[1]; Gobeli, Jeffrey D ^[2]

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1. Sugar Land, TX
2. Houston, TX

A laterally translatable pressure staged rotary shaft sealing mechanism having a seal housing with a shaft passage therein being exposed to a fluid pressure P1 and with a rotary shaft being located within the shaft passage. At least one annular laterally translatable seal carrier is provided. First and second annular resilient sealing elements are supported in axially spaced relation by the annular seal carriers and have sealing relation with the rotary shaft. The seal housing and at least one seal carrier define a first pressure staging chamber exposed to the first annular resilient sealing element and a second pressure staging chamber located between and exposed to the first and second annular resilient sealing elements. A first fluid is circulated to the first pressure chamber at a pressure P1, and a second staging pressure fluid is circulated to the second pressure chamber at a fraction of pressure P1 to achieve pressure staging, cooling of the seals. Seal placement provides hydraulic force balancing of the annular seal carriers.

• Research Organization: Kalsi Engineering, Inc. (Sugarland, TX)
• DOE Contract Number: FG03-90ER80939
• Assignee: Kalsi Engineering, Inc. (Sugar Land, TX)
• Patent Number(s): US 6,227,547
• Application Number: 09/320222
• OSTI ID: 879596
• Country of Publication: United States
• Language: English