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Turbine blade assembly and seal strip
PATENTS Process for producing an insert for a linear seal Applicant: Saargummi Technologies Sarl, Luxembourg This invention relates to a process for producing a linear reinforcing insert, such as a U-section energiser and retainer, for a linear seal – in particular for sealing doors and windows on vehicle bodies. The insert has regularly recurrent cross-sectional variations in the longitudinal direction of the linear seal. A former for the insert moves along with the shaped material in the longitudinal direction of the linear seal and returns to the starting position for shaping on a path remote from the material. Publication number: WO/2009/052974 Inventors: C. Kast and S. Kotz Publication date: 30 April 2009
Turbine blade assembly and seal strip Applicant: Siemens Aktiengesellschaft, Germany This patent discusses a turbine blade assembly, in particular for a gas turbine, which has bent seal strips at the blade root. The seal strips are arranged in the gaps between the platforms of neighbouring turbine blades to seal the gap, and protrude axially over the blade root and over the locking plate. A feature of the seal strip is that it comprises a straight portion and a portion with a bend. The portion with the bend is narrower than the straight portion. Publication number: WO/2009/053169 Inventors: P. Lake and R.J. Webb Publication date: 30 April 2009
Fastener joint with sealing gasket Applicant: Airbus UK Ltd, UK A fastener joint for the assembly of an aircraft structure where a seal is applied under the head of a countersunk fastener is described. The gasket comprises a ring of sealing material surrounding a hole for receiving a fastener. The sealing material is composed of a partially cured polysulphide sealant. The gasket has a region (7) of increased thickness positioned towards the inner periphery of the ring that flows to form the collar – compressing the gasket between the head of the fastener and the first component, whereby the sealing material flows along the shaft of the fastener and forms a collar between the shaft of the fastener and the first component. This is intended to improve previous methods in which the sealant material forms a seal between the mating pairs of components. The gasket in this invention forms a collar between the shaft of the fastener and the bore wall (which engages both the shaft of the fastener and the bore wall). Preferably 14
Sealing Technology
the collar of the gasket forms a bond with the shaft of the fastener and/or the bore wall, and the ring forms a bond with the head of the fastener and the face of the component. Publication number: WO/2009/053734 Inventors: C.J. West and D.A. Sutton Publication date: 30 April 2009
Arrangement for setting an annular seal Applicant: Cameron International Corp, USA An arrangement for setting an annular seal in a well-head lining hanger is described. It is designed to perform several operations, such as running, setting and locking the seal using a single tool. Rotation of the setting tool exerts an axial motion and tapers, advancing the seal into position. Publication number: WO/2009/055164 Inventor: D.P. Nguyen. Publication date: 30 April 2009
Cable seal assembly
A bolt being assembled through the partially cured sealant, as described in patent WO/2009/053734.
Seal for rolling bearings Applicant: NTN Corp, Japan A relatively conventional looking shielded rolling element bearing is described. A mixture of what is described as a resin and the adjunct agent for the grease is fixed to the inner surfaces of the sealing shields. Publication number: WO/2009/054338 Inventors: H. Mikami and Y. Taguchi. Publication date: 30 April 2009
Bearing seal for gas turbine Applicant: Korea Institute of Science and Technology, Korea The subject of this patent is a bearing seal for a gas turbine. It is designed to reduce axial leakage and to support the vertical loads and shear forces efficiently – in particular, providing an improved seal with less friction than a brush seal. The seal is fitted in the bearing housing. It includes an elastic porous foil. The density ratio of the foil increases along the gas inflow direction. The porous foil is deformed elastically by the dynamic pressure of the working gas that leaks around the shaft during operation and creates a gap between the porous foil and shaft. A number of potential arrangements to achieve the increase in density along the seal are discussed together with the potential to use what is described as a bump foil at the ends of the seal. This improves seal performance, vibration damping and shearforce supporting performance. Publication number: WO/2009/054560 Inventors: D.J. Park, Y.B. Lee and C.H. Kim Publication date: 30 April 2009
Applicant: ADC Telecommunications Inc, USA A cable seal – particularly for sealing telecommunications cables into cabinets and terminal boxes – is detailed. It is designed to fit a cable without it being necessary to disconnect the cable, so that it is possible to change the housing to replace damaged elements. Examples include a car accidentally impacting the enclosure or a construction accident. It also may be desirable to change an undamaged portion of a pre-assembled cabinet for another portion which is a different colour in order to comply with customer needs. This seal has matching interlocking segments that make it possible to assemble it around the cable. Publication number: WO/2009/055668 Inventors: M. Holmberg, Y. Bayazit and J.J. Solheid Publication date: 30 April 2009
Expansion seal – especially for gases Applicant/Inventor: L. Hiss, Germany A seal designed particularly for high-pressure bayonet-type connections has been developed. A particular feature of this design is that the seal also can be made from flange material. It is typically a Y-section ring with the open end facing radially outwards. The two legs of the ‘Y’ appear to be an interference both axially and radially, once assembled. The seal is said to be satisfactory for use with hydrogen and helium. Several geometries are illustrated including a W-section that works on the same principle. A version of the same principle is also illustrated for use as a closure for wine and champagne bottles. Publication number: WO/2009/056290 Publication date: 7 May 2009
Sealing joint with integrated mating surface Applicant: Aircelle, France This invention relates to a sealing joint designed to be arranged between a pair of ducts in the nacelle
August 2009
Turbine blade assembly and seal strip Applicant: Siemens Aktiengesellschaft, Germany This patent discusses a turbine blade assembly, in particular for a gas turbine, which has bent seal strips at the blade root. The seal strips are arranged in the gaps between the platforms of neighbouring turbine blades to seal the gap, and protrude axially over the blade root and over the locking plate. A feature of the seal strip is that it comprises a straight portion and a portion with a bend. The portion with the bend is narrower than the straight portion. Publication number: WO/2009/053169 Inventors: P. Lake and R.J. Webb Publication date: 30 April 2009
Fastener joint with sealing gasket Applicant: Airbus UK Ltd, UK A fastener joint for the assembly of an aircraft structure where a seal is applied under the head of a countersunk fastener is described. The gasket comprises a ring of sealing material surrounding a hole for receiving a fastener. The sealing material is composed of a partially cured polysulphide sealant. The gasket has a region (7) of increased thickness positioned towards the inner periphery of the ring that flows to form the collar – compressing the gasket between the head of the fastener and the first component, whereby the sealing material flows along the shaft of the fastener and forms a collar between the shaft of the fastener and the first component. This is intended to improve previous methods in which the sealant material forms a seal between the mating pairs of components. The gasket in this invention forms a collar between the shaft of the fastener and the bore wall (which engages both the shaft of the fastener and the bore wall). Preferably 14
Sealing Technology
the collar of the gasket forms a bond with the shaft of the fastener and/or the bore wall, and the ring forms a bond with the head of the fastener and the face of the component. Publication number: WO/2009/053734 Inventors: C.J. West and D.A. Sutton Publication date: 30 April 2009
Arrangement for setting an annular seal Applicant: Cameron International Corp, USA An arrangement for setting an annular seal in a well-head lining hanger is described. It is designed to perform several operations, such as running, setting and locking the seal using a single tool. Rotation of the setting tool exerts an axial motion and tapers, advancing the seal into position. Publication number: WO/2009/055164 Inventor: D.P. Nguyen. Publication date: 30 April 2009
Cable seal assembly
A bolt being assembled through the partially cured sealant, as described in patent WO/2009/053734.
Seal for rolling bearings Applicant: NTN Corp, Japan A relatively conventional looking shielded rolling element bearing is described. A mixture of what is described as a resin and the adjunct agent for the grease is fixed to the inner surfaces of the sealing shields. Publication number: WO/2009/054338 Inventors: H. Mikami and Y. Taguchi. Publication date: 30 April 2009
Bearing seal for gas turbine Applicant: Korea Institute of Science and Technology, Korea The subject of this patent is a bearing seal for a gas turbine. It is designed to reduce axial leakage and to support the vertical loads and shear forces efficiently – in particular, providing an improved seal with less friction than a brush seal. The seal is fitted in the bearing housing. It includes an elastic porous foil. The density ratio of the foil increases along the gas inflow direction. The porous foil is deformed elastically by the dynamic pressure of the working gas that leaks around the shaft during operation and creates a gap between the porous foil and shaft. A number of potential arrangements to achieve the increase in density along the seal are discussed together with the potential to use what is described as a bump foil at the ends of the seal. This improves seal performance, vibration damping and shearforce supporting performance. Publication number: WO/2009/054560 Inventors: D.J. Park, Y.B. Lee and C.H. Kim Publication date: 30 April 2009
Applicant: ADC Telecommunications Inc, USA A cable seal – particularly for sealing telecommunications cables into cabinets and terminal boxes – is detailed. It is designed to fit a cable without it being necessary to disconnect the cable, so that it is possible to change the housing to replace damaged elements. Examples include a car accidentally impacting the enclosure or a construction accident. It also may be desirable to change an undamaged portion of a pre-assembled cabinet for another portion which is a different colour in order to comply with customer needs. This seal has matching interlocking segments that make it possible to assemble it around the cable. Publication number: WO/2009/055668 Inventors: M. Holmberg, Y. Bayazit and J.J. Solheid Publication date: 30 April 2009
Expansion seal – especially for gases Applicant/Inventor: L. Hiss, Germany A seal designed particularly for high-pressure bayonet-type connections has been developed. A particular feature of this design is that the seal also can be made from flange material. It is typically a Y-section ring with the open end facing radially outwards. The two legs of the ‘Y’ appear to be an interference both axially and radially, once assembled. The seal is said to be satisfactory for use with hydrogen and helium. Several geometries are illustrated including a W-section that works on the same principle. A version of the same principle is also illustrated for use as a closure for wine and champagne bottles. Publication number: WO/2009/056290 Publication date: 7 May 2009
Sealing joint with integrated mating surface Applicant: Aircelle, France This invention relates to a sealing joint designed to be arranged between a pair of ducts in the nacelle
August 2009