Low torque hydrodynamic lip geometry for rotary seals

Dietle, Lannie L.; Schroeder, John E.

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Title: Low torque hydrodynamic lip geometry for rotary seals

Abstract

A hydrodynamically lubricating geometry for the generally circular dynamic sealing lip of rotary seals that are employed to partition a lubricant from an environment. The dynamic sealing lip is provided for establishing compressed sealing engagement with a relatively rotatable surface, and for wedging a film of lubricating fluid into the interface between the dynamic sealing lip and the relatively rotatable surface in response to relative rotation that may occur in the clockwise or the counter-clockwise direction. A wave form incorporating an elongated dimple provides the gradual convergence, efficient impingement angle, and gradual interfacial contact pressure rise that are conducive to efficient hydrodynamic wedging. Skewed elevated contact pressure zones produced by compression edge effects provide for controlled lubricant movement within the dynamic sealing interface between the seal and the relatively rotatable surface, producing enhanced lubrication and low running torque.

Inventors:: Dietle, Lannie L.; Schroeder, John E.

Issue Date:: Tue Jul 21 00:00:00 EDT 2015

Research Org.:: Kalsi Engineering Inc., Houston, TX (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1195937

Patent Number(s):: 9086151

Application Number:: 13/242,107

Assignee:: Kalsi Engineering Inc. (Houston, TX)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16J - PISTONS {

Show more

F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16J - PISTONS {
F16J15/3208 - provided with tension elements, e.g. elastic rings
F16J15/3236 - with at least one lip for each surface, e.g. U-cup packings
F16J15/324 - Arrangements for lubrication or cooling of the sealing itself
F16J15/3244 - with hydrodynamic pumping action

Show less

DOE Contract Number:: FG02-05ER84206

Resource Type:: Patent

Resource Relation:: Patent File Date: 2011 Sep 23

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

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                    Dietle, Lannie L., and Schroeder, John E. Low torque hydrodynamic lip geometry for rotary seals.  United States: N. p., 2015. 
        Web.

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                    Dietle, Lannie L., & Schroeder, John E. Low torque hydrodynamic lip geometry for rotary seals.  United States.

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                    Dietle, Lannie L., and Schroeder, John E. Tue .  
        "Low torque hydrodynamic lip geometry for rotary seals".  United States.  https://www.osti.gov/servlets/purl/1195937.

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@article{osti_1195937,

  title        = {Low torque hydrodynamic lip geometry for rotary seals},

  author       = {Dietle, Lannie L. and Schroeder, John E.},

  abstractNote = {A hydrodynamically lubricating geometry for the generally circular dynamic sealing lip of rotary seals that are employed to partition a lubricant from an environment. The dynamic sealing lip is provided for establishing compressed sealing engagement with a relatively rotatable surface, and for wedging a film of lubricating fluid into the interface between the dynamic sealing lip and the relatively rotatable surface in response to relative rotation that may occur in the clockwise or the counter-clockwise direction. A wave form incorporating an elongated dimple provides the gradual convergence, efficient impingement angle, and gradual interfacial contact pressure rise that are conducive to efficient hydrodynamic wedging. Skewed elevated contact pressure zones produced by compression edge effects provide for controlled lubricant movement within the dynamic sealing interface between the seal and the relatively rotatable surface, producing enhanced lubrication and low running torque.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Jul 21 00:00:00 EDT 2015},

  month        = {Tue Jul 21 00:00:00 EDT 2015}

}

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Hydrodynamic rotary coupling seal
patent, May 2003

Kalsi, Manmohan S.; Dietle, Lannie; Conroy, William T.
US Patent Document 6,561,520
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Hydrodynamic rotary seal with varying slope
patent, February 2004

Dietle, Lannie; Kalsi, Manmohan S.; Gobeli, Jeffrey D.
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Hydrodynamic rotary seal with opposed tapering seal lips
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Gobeli, Jeffrey D.; Dietle, Lannie; Kalsi, Manmohan S.
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Hydrodynamic rotary seal
patent, May 2006

Gobeli, Jeffrey D.; Dietle, Lannie; Kalsi, Manmohan S.
US Patent Document 7,052,020
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Stabilizing geometry for hydrodynamic rotary seals

Patent Dietle, Lannie L [Houston, TX]; Schroeder, John E [Richmond, TX]

A hydrodynamic sealing assembly including a first component having first and second walls and a peripheral wall defining a seal groove, a second component having a rotatable surface relative to said first component, and a hydrodynamic seal comprising a seal body of generally ring-shaped configuration having a circumference. The seal body includes hydrodynamic and static sealing lips each having a cross-sectional area that substantially vary in time with each other about the circumference. In an uninstalled condition, the seal body has a length defined between first and second seal body ends which varies in time with the hydrodynamic sealing lipmore » « less
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Skew and twist resistant hydrodynamic rotary shaft seal

Patent Dietle, Lannie [Sugar Land, TX]; Kalsi, Manmohan Singh [Houston, TX]

A hydrodynamically lubricated squeeze packing type rotary shaft seal suitable for lubricant retention and environmental exclusion which incorporates one or more resilient protuberances which and cooperate with the gland walls to hold the seal straight in its installation groove in unpressurized and low pressure lubricant retention applications thereby preventing skew-induced wear caused by impingement of abrasive contaminants present in the environment, and which also serve as radial bearings to prevent tipping of the seal within its installation gland.
Full Text Available
Skew And Twist Resistant Hydrodynamic Rotary Shaft Seal

Patent Dietle, Lannie [Sugar Land, TX]; Kalsi, Manmohan Singh [Houston, TX]

A hydrodynamically lubricated squeeze packing type rotary shaft seal suitable for lubricant retention and environmental exclusion which incorporates one or more resilient protuberances which and cooperate with the gland walls to hold the seal straight in its installation groove in unpressurized and low pressure lubricant retention applications thereby preventing skew-induced wear caused by impingement of abrasive contaminants present in the environment, and which also serve as radial bearings to prevent tipping of the seal within its installation gland. Compared to prior art, this invention provides a dramatic reduction of seal and shaft wear in abrasive environments and provides a significantmore » increase in seal life. « less
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Title: Low torque hydrodynamic lip geometry for rotary seals

Abstract

Citation Formats

Self-lubricating seal patent, August 1976

Bidirectional hydrodynamic polytetrafluoroethylene seal patent, October 1976

Annular seal patent, January 1978

Shaft seal with helical pumping element patent, June 1978

Bi-directional hydrodynamic shaft seal method patent, October 1978

Hydrodynamic seal with collector bead patent, January 1980

Machinery seal patent, March 1980

Sealing ring patent, November 1980

Drilling head patent, August 1981

Rotary shaft seal patent, August 1981

Hydrodynamic shaft seal patent, September 1981

Sinuous seal with auxiliary excluder lips patent, June 1982

Apparatus for applying pressure to fluid seals patent, February 1983

Fluid seal with rib for rotary shaft patent, May 1983

Elastomeric seal ring with self-lubricating wear-reducing feature patent, June 1983

Self-venting seal lip patent, August 1983

Hydrodynamic shaft seal with continuously divergent seal element patent, April 1984

Rotary bidirectional dynamic shaft seal having a pumping projection with angulated primary and secondary pumping surfaces patent, April 1984

Bi-directional hydrodynamic slitted seal patent, May 1984

Method of providing a fluid seal in downhole drilling apparatus patent, October 1984

Rotary shaft seal patent, November 1984

Extended wear annular oil seal patent, July 1985

Method of producing a hydrodynamic seal patent, September 1985

Hydrodynamic lubricant seal for drill bits patent, September 1986

Roller cutter drill bit having a texturized seal member patent, October 1986

Lip sealing ring with tow rows of projections and for a rotary shaft patent, June 1987

Hydrodynamic seal patent, November 1987

Twist proof seal ring arrangement for shafts patent, March 1988

Bidirectional seal with elliptical sealing barriers patent, April 1988

Seal ring having lubricant pockets and a process of making a seal ring patent, June 1988

Hydrodynamic seal patent, September 1988

Sealing ring with two rows of projections and for a rotary shaft patent, November 1988

Rotary shaft wave seal patent, December 1988

Bi-directional oil seal with leakage recovering rib formations patent, March 1991

Shaft seal patent, August 1992

Shaft seal patent, September 1992

Rotary blowout preventer adaptable for use with both kelly and overhead drive mechanisms patent, January 1993

Radially undulating shaft seal patent, March 1993

Laterally translating seal carrier for a drilling mud motor sealed bearing assembly patent, March 1993

Patterned textured seal patent, March 1993

Rotary blowout preventer adaptable for use with both kelly and overhead drive mechanisms patent, July 1993

Hydrodynamically lubricated rotary shaft seal having twist resistant geometry patent, July 1993

Radial shaft sealing ring patent, June 1995

Bearing seal with oil deflectors patent, April 1996

Rotating blowout preventor patent, July 1997

Rotating blowout preventer patent, September 1997

Hydrodynamically lubricated rotary shaft seal with environmental side groove patent, October 1997

Bidirectional shaft seal with intersecting spiral grooves patent, December 1997

Annular shaft seal having an elastic sealing lip patent, January 1998

Extrusion resistant hydrodynamically lubricated multiple modulus rotary shaft seal patent, April 1998

Seal design with bi-directional pumping patent, August 1998

Rod seal cartridge for progressing cavity artificial lift pumps patent, October 1998

Skew and twist resistant hydrodynamic rotary shaft seal patent, February 1999

Oil seals and method of making thereof patent, June 1999

Uni-directional seal for use on a shaft patent, July 1999

Swivel seal assembly patent, December 1999

Rotating drilling head with spaced apart seals patent, January 2000

Skew and twist resistant hydrodynamic rotary shaft seal patent, March 2000

Textured seal for reduced wear patent, August 2000

Rotary seal with enhanced lubrication and contaminant flushing patent, August 2000

Extrusion resistant hydrodynamically lubricated rotary shaft seal patent, September 2000

Textured seal patent, October 2000

Controlled leakage rotating seal ring with elements for receiving and holding a lubricant on a face thereof patent, February 2001

High pressure rotary shaft sealing mechanism patent, May 2001

Skew resisting hydrodynamic seal patent, November 2001

Hydrodynamic packing assembly patent, January 2002

Rotary drilling head assembly patent, March 2002

Hydrodynamic seal with improved extrusion abrasion and twist resistance patent, May 2002

Downhole rotary motor with sealed thrust bearing assembly patent, August 2002

Rotary seal with improved dynamic interface patent, December 2002

Rotating blowout preventer with independent cooling circuits and thrust bearing patent, April 2003

Hydrodynamic rotary coupling seal patent, May 2003

Hydrodynamic rotary seal with varying slope patent, February 2004

Hydrodynamic rotary seal with opposed tapering seal lips patent, July 2004

Hydrodynamic rotary seal patent, May 2006

Self-lubricating seal
patent, August 1976

Bidirectional hydrodynamic polytetrafluoroethylene seal
patent, October 1976

Annular seal
patent, January 1978

Shaft seal with helical pumping element
patent, June 1978

Bi-directional hydrodynamic shaft seal method
patent, October 1978

Hydrodynamic seal with collector bead
patent, January 1980

Machinery seal
patent, March 1980

Sealing ring
patent, November 1980

Drilling head
patent, August 1981

Rotary shaft seal
patent, August 1981

Hydrodynamic shaft seal
patent, September 1981

Sinuous seal with auxiliary excluder lips
patent, June 1982

Apparatus for applying pressure to fluid seals
patent, February 1983

Fluid seal with rib for rotary shaft
patent, May 1983

Elastomeric seal ring with self-lubricating wear-reducing feature
patent, June 1983

Self-venting seal lip
patent, August 1983

Hydrodynamic shaft seal with continuously divergent seal element
patent, April 1984

Rotary bidirectional dynamic shaft seal having a pumping projection with angulated primary and secondary pumping surfaces
patent, April 1984

Bi-directional hydrodynamic slitted seal
patent, May 1984

Method of providing a fluid seal in downhole drilling apparatus
patent, October 1984

Rotary shaft seal
patent, November 1984

Extended wear annular oil seal
patent, July 1985

Method of producing a hydrodynamic seal
patent, September 1985

Hydrodynamic lubricant seal for drill bits
patent, September 1986

Roller cutter drill bit having a texturized seal member
patent, October 1986

Lip sealing ring with tow rows of projections and for a rotary shaft
patent, June 1987

Hydrodynamic seal
patent, November 1987

Twist proof seal ring arrangement for shafts
patent, March 1988

Bidirectional seal with elliptical sealing barriers
patent, April 1988

Seal ring having lubricant pockets and a process of making a seal ring
patent, June 1988

Hydrodynamic seal
patent, September 1988

Sealing ring with two rows of projections and for a rotary shaft
patent, November 1988

Rotary shaft wave seal
patent, December 1988

Bi-directional oil seal with leakage recovering rib formations
patent, March 1991

Shaft seal
patent, August 1992

Shaft seal
patent, September 1992

Rotary blowout preventer adaptable for use with both kelly and overhead drive mechanisms
patent, January 1993

Radially undulating shaft seal
patent, March 1993

Laterally translating seal carrier for a drilling mud motor sealed bearing assembly
patent, March 1993

Patterned textured seal
patent, March 1993

Rotary blowout preventer adaptable for use with both kelly and overhead drive mechanisms
patent, July 1993

Hydrodynamically lubricated rotary shaft seal having twist resistant geometry
patent, July 1993

Radial shaft sealing ring
patent, June 1995

Bearing seal with oil deflectors
patent, April 1996

Rotating blowout preventor
patent, July 1997

Rotating blowout preventer
patent, September 1997

Hydrodynamically lubricated rotary shaft seal with environmental side groove
patent, October 1997

Bidirectional shaft seal with intersecting spiral grooves
patent, December 1997

Annular shaft seal having an elastic sealing lip
patent, January 1998

Extrusion resistant hydrodynamically lubricated multiple modulus rotary shaft seal
patent, April 1998

Seal design with bi-directional pumping
patent, August 1998

Rod seal cartridge for progressing cavity artificial lift pumps
patent, October 1998

Skew and twist resistant hydrodynamic rotary shaft seal
patent, February 1999

Oil seals and method of making thereof
patent, June 1999

Uni-directional seal for use on a shaft
patent, July 1999

Swivel seal assembly
patent, December 1999

Rotating drilling head with spaced apart seals
patent, January 2000

Skew and twist resistant hydrodynamic rotary shaft seal
patent, March 2000

Textured seal for reduced wear
patent, August 2000

Rotary seal with enhanced lubrication and contaminant flushing
patent, August 2000

Extrusion resistant hydrodynamically lubricated rotary shaft seal
patent, September 2000

Textured seal
patent, October 2000

Controlled leakage rotating seal ring with elements for receiving and holding a lubricant on a face thereof
patent, February 2001

High pressure rotary shaft sealing mechanism
patent, May 2001

Skew resisting hydrodynamic seal
patent, November 2001

Hydrodynamic packing assembly
patent, January 2002

Rotary drilling head assembly
patent, March 2002

Hydrodynamic seal with improved extrusion abrasion and twist resistance
patent, May 2002

Downhole rotary motor with sealed thrust bearing assembly
patent, August 2002

Rotary seal with improved dynamic interface
patent, December 2002

Rotating blowout preventer with independent cooling circuits and thrust bearing
patent, April 2003

Hydrodynamic rotary coupling seal
patent, May 2003

Hydrodynamic rotary seal with varying slope
patent, February 2004

Hydrodynamic rotary seal with opposed tapering seal lips
patent, July 2004

Hydrodynamic rotary seal
patent, May 2006