- Email: [email protected]
Seal assembly for turbo machines and compressors
CALENDAR
Events Calendar 13–15 October 2004
24–27 October 2004
FSA Fall Meeting
ASME/STLE International Joint Tribology Conference
Station, TX 77843-3254, USA. Tel: +1 979 845 7417, Web: turbolab.tamu.edu
803 6126, Email: itc.kobe2005@ pac.ne.jp, Web: www.crossroad.jp/itc/
15–19 March 2005
12–16 September 2005
19–21 October 2004
Long Beach, California Contact: ASME International, 3 Park Avenue, New York, NY 10016-5990, USA. Tel: +1 212 591 7159, Web: www.asmeconferences.org/itjc04 Or contact: STLE, 840 Busse Highway, Park Ridge, IL 60068-2376, USA. Tel: +1 847 825 5536, Fax: +1 847 825 1456.
ISGATEC 2004, International Sealing & Gasket Technology
9–11 November 2004
15–19 May 2005
Napa, California, USA Contact: Fluid Sealing Association, 994 Old Eagle School Road, Suit 1019, Wayne, PA 19087, USA. Tel: +1 610 971 4850, Fax: +1 610 971 4859, Web: www.fluidsealing.com
Stuttgart, Germany Contact: ISGATEC GmbH, Postfach 101505, D-68015 Mannheim, Germany. Tel: +49 621 717 68880, Fax: +49 621 717 68888, Email: [email protected], Web: www.isgatec.com
19–21 October 2004 Fluid Sealing Technology Short Course Atlanta, Georgia, USA Contact: Georgia Tech Professional Education, Global Learning & Conference Center, PO Box 93686, Atlanta, GA 30377-0686, USA. Tel: +1 404 385 3500, Web: www.gtconted.org
Valve World Maastricht, The Netherlands Contact: KCI Publishing BV, PO Box 396, 2700 AJ Zutphen, The Netherlands. Tel: +31 575 585270, Fax: +31 575 511099, Email: [email protected], Web: www.valve-world.net/conf2004
2005
28 February–3 March 2005 22nd International Pump Users’ Symposium Houston, Texas, USA Contact: Turbomachinery Laboratory, Texas A&M University System, College
One-piece toggle switch cover with integral panel standoff and seal receptacle Applicant: Honeywell International, USA This patent covers the design of a toggle switch that requires both sealing of the toggle stalk, and between the switch and the panel. A seal is provided between the toggle lever (12) and the bushing (22) of the switch cover, in order to prevent moisture and other contaminants from passing through the switch. The panel seal is seated around the bushing and within the protrusions (30), so that the pro-
trusions determine the amount of compression of the seal. The switch is fitted to the panel with a single fastener, so that the seal is squeezed between the standoff and the panel to provide a seal. A particular feature claimed for this design is the ease of fitting, and that it is not necessary to restrain the switch while tightening the fastener. Patent number: WO 2004/059675 Inventors: M.J. Skarlupka et al. Publication date: 15 July 2004
Side view of the toggle switch described in WO 2004/059675, showing the protrusions that form the seal compression limiter.
Sealing Technology October 2004
IFPE 2005, International Exposition for Power Transmission Las Vegas, Nevada, USA Contact: National Fluid Power Association, Milwaukee, Wisconsin, USA. Tel: +1 414 298 4141, Web: www.ifpe.com
STLE 60th Annual Meeting Las Vegas, Nevada, USA Contact: Society of Tribologists & Lubrication Engineers, 840 Busse Highway, Park Ridge, IL 60068-2376, USA. Tel: +1 847 825 5536, Fax: +1 847 825 1456, Web: www.stle.org
29 May–2 June 2005 International Tribology Conference Kobe, Japan Contact: Dr M. Tagawa, Mechanical Engineering, Faculty of Engineering, Kobe University, 1-1 Rokko-dai, Nadaku, Kobe, 657-8501, Japan. Fax: +81 78
World Tribology Congress III Washington, DC, USA Contact: Edward Salek, Society of Tribologists & Lubrication Engineers (STLE), 840 Busse Highway, Park Ridge, IL 60068-2376, USA. Tel: +1 847 825 5536, Email: [email protected], Web: www.stle.org Or contact: Edison Aulestia, ASME International, Three Park Avenue, New York, NY 10016-5990, USA. Tel: +1 212 591 7159, Email: aulestiae@ asme.org, Web: www.asme.org Conference website: www.conferencetoolbox.org/wtc05
12–14 October 2005 18th International Conference on Fluid Sealing Antwerp, Belgium Contact: BHR Group Ltd, The Fluid Engineering Centre, Cranfield, Bedfordshire MK43 0AJ, UK. Tel: +44 1234 750422, Fax: +44 1234 750074, Email: [email protected], Web: www.bhrgroup.com/confsite
Seal assembly for turbo machines and compressors Applicant: Cross Manufacturing Co, UK This patent describes a variety of seal arrangements for gas turbines, steam turbines, compressors, gas pumps, turbo-chargers and vacuum pumps. They are primarily segmented seal types arranged in a channel-shaped seal body. The seal surface may be profiled to promote a hydrodynamic film between the seal surface and the rotating element, or alternatively it may have one or more cavities for connection to a high-pressure source to form a hydrostatic bearing. In the latter case the seal body may include one or more conduits extending between the cavities and a face of the seal body, which is exposed to the higher-pressure region. The seal bodies or shoes are arranged circumferentially side-byside in the channel to abut end to end. A resilient element is provided to energize the seal segments into sealing contact with the rotating shaft. These resilient elements may be a variety of designs of leaf spring, or a series of coil springs.
Examples of some of the spring designs described in WO 2004/ 053365 to energize seal segments for high-speed rotary seals.
Patent number: WO 2004/053365 Inventor: P.F. Crudgington Publication date: 24 June 2004
15
Events Calendar 13–15 October 2004
24–27 October 2004
FSA Fall Meeting
ASME/STLE International Joint Tribology Conference
Station, TX 77843-3254, USA. Tel: +1 979 845 7417, Web: turbolab.tamu.edu
803 6126, Email: itc.kobe2005@ pac.ne.jp, Web: www.crossroad.jp/itc/
15–19 March 2005
12–16 September 2005
19–21 October 2004
Long Beach, California Contact: ASME International, 3 Park Avenue, New York, NY 10016-5990, USA. Tel: +1 212 591 7159, Web: www.asmeconferences.org/itjc04 Or contact: STLE, 840 Busse Highway, Park Ridge, IL 60068-2376, USA. Tel: +1 847 825 5536, Fax: +1 847 825 1456.
ISGATEC 2004, International Sealing & Gasket Technology
9–11 November 2004
15–19 May 2005
Napa, California, USA Contact: Fluid Sealing Association, 994 Old Eagle School Road, Suit 1019, Wayne, PA 19087, USA. Tel: +1 610 971 4850, Fax: +1 610 971 4859, Web: www.fluidsealing.com
Stuttgart, Germany Contact: ISGATEC GmbH, Postfach 101505, D-68015 Mannheim, Germany. Tel: +49 621 717 68880, Fax: +49 621 717 68888, Email: [email protected], Web: www.isgatec.com
19–21 October 2004 Fluid Sealing Technology Short Course Atlanta, Georgia, USA Contact: Georgia Tech Professional Education, Global Learning & Conference Center, PO Box 93686, Atlanta, GA 30377-0686, USA. Tel: +1 404 385 3500, Web: www.gtconted.org
Valve World Maastricht, The Netherlands Contact: KCI Publishing BV, PO Box 396, 2700 AJ Zutphen, The Netherlands. Tel: +31 575 585270, Fax: +31 575 511099, Email: [email protected], Web: www.valve-world.net/conf2004
2005
28 February–3 March 2005 22nd International Pump Users’ Symposium Houston, Texas, USA Contact: Turbomachinery Laboratory, Texas A&M University System, College
One-piece toggle switch cover with integral panel standoff and seal receptacle Applicant: Honeywell International, USA This patent covers the design of a toggle switch that requires both sealing of the toggle stalk, and between the switch and the panel. A seal is provided between the toggle lever (12) and the bushing (22) of the switch cover, in order to prevent moisture and other contaminants from passing through the switch. The panel seal is seated around the bushing and within the protrusions (30), so that the pro-
trusions determine the amount of compression of the seal. The switch is fitted to the panel with a single fastener, so that the seal is squeezed between the standoff and the panel to provide a seal. A particular feature claimed for this design is the ease of fitting, and that it is not necessary to restrain the switch while tightening the fastener. Patent number: WO 2004/059675 Inventors: M.J. Skarlupka et al. Publication date: 15 July 2004
Side view of the toggle switch described in WO 2004/059675, showing the protrusions that form the seal compression limiter.
Sealing Technology October 2004
IFPE 2005, International Exposition for Power Transmission Las Vegas, Nevada, USA Contact: National Fluid Power Association, Milwaukee, Wisconsin, USA. Tel: +1 414 298 4141, Web: www.ifpe.com
STLE 60th Annual Meeting Las Vegas, Nevada, USA Contact: Society of Tribologists & Lubrication Engineers, 840 Busse Highway, Park Ridge, IL 60068-2376, USA. Tel: +1 847 825 5536, Fax: +1 847 825 1456, Web: www.stle.org
29 May–2 June 2005 International Tribology Conference Kobe, Japan Contact: Dr M. Tagawa, Mechanical Engineering, Faculty of Engineering, Kobe University, 1-1 Rokko-dai, Nadaku, Kobe, 657-8501, Japan. Fax: +81 78
World Tribology Congress III Washington, DC, USA Contact: Edward Salek, Society of Tribologists & Lubrication Engineers (STLE), 840 Busse Highway, Park Ridge, IL 60068-2376, USA. Tel: +1 847 825 5536, Email: [email protected], Web: www.stle.org Or contact: Edison Aulestia, ASME International, Three Park Avenue, New York, NY 10016-5990, USA. Tel: +1 212 591 7159, Email: aulestiae@ asme.org, Web: www.asme.org Conference website: www.conferencetoolbox.org/wtc05
12–14 October 2005 18th International Conference on Fluid Sealing Antwerp, Belgium Contact: BHR Group Ltd, The Fluid Engineering Centre, Cranfield, Bedfordshire MK43 0AJ, UK. Tel: +44 1234 750422, Fax: +44 1234 750074, Email: [email protected], Web: www.bhrgroup.com/confsite
Seal assembly for turbo machines and compressors Applicant: Cross Manufacturing Co, UK This patent describes a variety of seal arrangements for gas turbines, steam turbines, compressors, gas pumps, turbo-chargers and vacuum pumps. They are primarily segmented seal types arranged in a channel-shaped seal body. The seal surface may be profiled to promote a hydrodynamic film between the seal surface and the rotating element, or alternatively it may have one or more cavities for connection to a high-pressure source to form a hydrostatic bearing. In the latter case the seal body may include one or more conduits extending between the cavities and a face of the seal body, which is exposed to the higher-pressure region. The seal bodies or shoes are arranged circumferentially side-byside in the channel to abut end to end. A resilient element is provided to energize the seal segments into sealing contact with the rotating shaft. These resilient elements may be a variety of designs of leaf spring, or a series of coil springs.
Examples of some of the spring designs described in WO 2004/ 053365 to energize seal segments for high-speed rotary seals.
Patent number: WO 2004/053365 Inventor: P.F. Crudgington Publication date: 24 June 2004
15