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Threaded tube joint for oil industry applications
PATENTS
Labyrinth/brush seal combination for lower cost
Multidirectional turbine shim seal
Applicant: PerkinElmer Inc, USA This patent describes a labyrinth/ brush seal combination that is intended to provide such seal arrangements at a considerably reduced cost compared with current seals. The brush seal design is intended to fit many different labyrinth designs, and be applicable for both new and as a retrofit to existing labyrinths. The retainer of the brush seal is fitted in a
Applicant: Siemens Westinghouse Power Corporation, USA This invention relates to sealing gaps within a single turbine component or between two or more turbine components. It is particularly intended for sealing the gaps between turbine blades, and is intended to provide a simpler sealing arrangement without the need for operations such as spot
slot formed in the labyrinth seal. The brush seal does not have separate front and back plates. The first tooth of the labyrinth seal forms the front plate of the brush seal, and a second, adjacent tooth of the labyrinth forms the back plate. Patent number: WO 2004/023008 Inventors: R.P. Menendez and H. King Publication date: 18 March 2004
Multidirectional turbine shim seal that may be used to seal between turbine blades without the need to use spot welding, from WO 2004/025147.
A section of brush seal inserted in a labyrinth as described in WO 2004/023008.
High-performance gasket for engine recess covers Applicant: NOK Corporation, Japan This patent describes a high performance gasket capable of coping with a reduction in size and continuing to provide a seal without being extruded at the time of installation. The application is for use in vehicle engine recess cover gaskets. It is manufactured from a material of hardness of 30 to 80° Durometer A. The design requirements specified
include (referring to the Figure below): W1/W0 < 0.9, and 1.15 < H/W0 < 1.80. The ratio of L, the overall peripheral contour length of the section, to WO, the base crosssection, is also specified. The gasket is compressed to a minimum of 13.5%. Patent number: WO 2004/025148 Inventors: N. Oka et al. Publication date: 25 March 2004
Threaded tube joint for oil industry applications Applicant: Tenaris Connections AG, Liechtenstein This patent is another describing a threaded tube joint for the oil extraction industry. This example has a trapezoidal thread and a toroidal sealing surface (11) at the end of the male thread component. This engages with a corresponding female conical sealing surface (12). The toroidal sealing surface has a
Cross-section of the recess cover gasket described in WO 2004/025148, showing the profile ratios described in the patent.
PTFE seal and method of fabrication Applicant: Federal-Mogul Corporation, USA This patent describes a method of manufacturing PTFE seals. A mixture of PTFE resin powder and a susceptor material are compacted and then sintered by exciting the susceptor material with microwave energy. The compaction and sintering is carried out in a continuous 16
process under vacuum to extract any air from the mixture. The sintered mixture is fed, preferably continuously, to a cutting zone where PTFE wafers are cut from the sintered mixture. This should also be carried out while the mixture is warm. Patent number: WO 2004/016403 Inventor: W.B. Lineton Publication date: 26 February 2004
welding. The seal includes a main body (14) with a longitudinal axis positioned transverse to the axial direction of the turbine, and having at least one arm (22, 24, 42, 44,) for sealing the main body to the surface (16). It is configured to fit within a recess. Patent number: WO 2004/025147 Inventor: J.P. Smed Publication date: 25 March 2004
radius Rs value comprised within the range given by the following equation:
Patent number: WO 2004/023020 Inventors: G.E. Carcagno et al. Publication date: 18 March 2004
The threaded metal pipe joint with mating toroidal and conical sections, from WO 2004/023020.
Power tool air seal and vibration damper Applicant: Snap-On Technologies Inc, USA This patent describes a resilient boot for a power tool. It has a radial flange mounted in a seat formed by the halves of the housing, to provide a sealed barrier segregating air from the inlet vent of a motor from the exhaust vent. The boot also acts as a mounting for the motor, and provides vibration
damping between the motor and the housing halves. Wire management slots may also be included. Further benefits claimed include the ability to accommodate tolerance stack-up, and provide shock absorption when the tool is dropped. Patent number: WO 2004/026534 Inventors: K.C. Happ et al. Publication date: 1 April 2004
Sealing Technology June 2004
Labyrinth/brush seal combination for lower cost
Multidirectional turbine shim seal
Applicant: PerkinElmer Inc, USA This patent describes a labyrinth/ brush seal combination that is intended to provide such seal arrangements at a considerably reduced cost compared with current seals. The brush seal design is intended to fit many different labyrinth designs, and be applicable for both new and as a retrofit to existing labyrinths. The retainer of the brush seal is fitted in a
Applicant: Siemens Westinghouse Power Corporation, USA This invention relates to sealing gaps within a single turbine component or between two or more turbine components. It is particularly intended for sealing the gaps between turbine blades, and is intended to provide a simpler sealing arrangement without the need for operations such as spot
slot formed in the labyrinth seal. The brush seal does not have separate front and back plates. The first tooth of the labyrinth seal forms the front plate of the brush seal, and a second, adjacent tooth of the labyrinth forms the back plate. Patent number: WO 2004/023008 Inventors: R.P. Menendez and H. King Publication date: 18 March 2004
Multidirectional turbine shim seal that may be used to seal between turbine blades without the need to use spot welding, from WO 2004/025147.
A section of brush seal inserted in a labyrinth as described in WO 2004/023008.
High-performance gasket for engine recess covers Applicant: NOK Corporation, Japan This patent describes a high performance gasket capable of coping with a reduction in size and continuing to provide a seal without being extruded at the time of installation. The application is for use in vehicle engine recess cover gaskets. It is manufactured from a material of hardness of 30 to 80° Durometer A. The design requirements specified
include (referring to the Figure below): W1/W0 < 0.9, and 1.15 < H/W0 < 1.80. The ratio of L, the overall peripheral contour length of the section, to WO, the base crosssection, is also specified. The gasket is compressed to a minimum of 13.5%. Patent number: WO 2004/025148 Inventors: N. Oka et al. Publication date: 25 March 2004
Threaded tube joint for oil industry applications Applicant: Tenaris Connections AG, Liechtenstein This patent is another describing a threaded tube joint for the oil extraction industry. This example has a trapezoidal thread and a toroidal sealing surface (11) at the end of the male thread component. This engages with a corresponding female conical sealing surface (12). The toroidal sealing surface has a
Cross-section of the recess cover gasket described in WO 2004/025148, showing the profile ratios described in the patent.
PTFE seal and method of fabrication Applicant: Federal-Mogul Corporation, USA This patent describes a method of manufacturing PTFE seals. A mixture of PTFE resin powder and a susceptor material are compacted and then sintered by exciting the susceptor material with microwave energy. The compaction and sintering is carried out in a continuous 16
process under vacuum to extract any air from the mixture. The sintered mixture is fed, preferably continuously, to a cutting zone where PTFE wafers are cut from the sintered mixture. This should also be carried out while the mixture is warm. Patent number: WO 2004/016403 Inventor: W.B. Lineton Publication date: 26 February 2004
welding. The seal includes a main body (14) with a longitudinal axis positioned transverse to the axial direction of the turbine, and having at least one arm (22, 24, 42, 44,) for sealing the main body to the surface (16). It is configured to fit within a recess. Patent number: WO 2004/025147 Inventor: J.P. Smed Publication date: 25 March 2004
radius Rs value comprised within the range given by the following equation:
Patent number: WO 2004/023020 Inventors: G.E. Carcagno et al. Publication date: 18 March 2004
The threaded metal pipe joint with mating toroidal and conical sections, from WO 2004/023020.
Power tool air seal and vibration damper Applicant: Snap-On Technologies Inc, USA This patent describes a resilient boot for a power tool. It has a radial flange mounted in a seat formed by the halves of the housing, to provide a sealed barrier segregating air from the inlet vent of a motor from the exhaust vent. The boot also acts as a mounting for the motor, and provides vibration
damping between the motor and the housing halves. Wire management slots may also be included. Further benefits claimed include the ability to accommodate tolerance stack-up, and provide shock absorption when the tool is dropped. Patent number: WO 2004/026534 Inventors: K.C. Happ et al. Publication date: 1 April 2004
Sealing Technology June 2004