- Email: [email protected]
Multi-layer metal cylinder-head gasket
PATENTS Sealing structure with groove and gasket
Patent WO/2010/073016 provides details of a seal that is designed to continually regenerate as wear occurs.
to continually regenerate as wear occurs. A device is detailed that provides a seal between a housing for a moving element such as a drill string, piston or the like, and the moving element. The device is composed of a storage well to retain the seal material. The well has an outlet that is connected to an aperture in the housing, enabling the seal material to flow into the space between the housing and the moving element from a inlet port, enabling the seal precursor to be added to the well. A pressurising system forces the seal material out of the aperture. Therefore, the seal can be continually renewed without the need to shut down the operation. Preferably, the seal precursor comprises one or more monomers – each monomer reacting to form a polymer. Polymeric materials can be selected to have the properties required of the seal material. Moreover, the reaction between monomers can be tailored to suite any change in seal material required. Alternatively, the reaction between monomers is initiated thermally. The device includes a means of controlling the temperature of the seal material. Optionally, the seal precursor includes a particulate material which can include polytetrafluoroethylene or a silica glass. Patent number: WO/2010/073016 Inventor: M. McKenzie Publication date: 1 July 2010
Gasket-type orifice and pressure-type flow-control device Applicant: Fujikin Inc, Japan An orifice insert that includes a gasket to seal it in a housing is discussed. Although described as a flow-control device the specific application is not discussed. Patent number: WO/2010/073473 Inventors: T. Hirose, T. Shinohara, T. Yoshida, K. Shigyou and M. Yamaji Publication date: 1 July 2010
Multi-layer metal cylinder-head gasket Applicant: Nippon Gasket Co Ltd, Japan
October 2010
A multi-layer metal cylinder-head gasket is described. A specific feature is the contours of the laminations surrounding oil passages where an extra bead may be formed. Patent number: WO/2010/073796 Inventors: Y. Takeda and M. Kusano Publication date: 1 July 2010
Mechanical seal ring Applicant: Kyocera Corp, Japan This invention concerns a mechanical seal ring that is able to maintain good sliding characteristics even when used continually for long periods, and a mechanical seal, faucet valve and rolling support device that are equipped with this device. Disclosed is a sliding component, which is equipped with a stationary member and a moveable member (that slides in contact with the stationary member), and in which the stationary member and moveable member are each made from a silicon carbide sintered body containing graphite (the graphite content is at least 4% by mass higher in one ring). By producing the sliding component in such a way that the stationary member and moveable member are made of compositions with different graphite content, good sliding characteristics can be achieved through high lubricating action, and sliding can be maintained over long periods. Patent number: WO/2010/073873 Inventors: M. Yashima and Y. Ishimine Publication date: 1 July 2010
Applicant: Zhe Jiang China Valve Co Ltd, China A sealing structure with a groove and gasket is composed of an annular gasket and an annular cavity. For example, the cross-section of the annular gasket may be square, rectangular or O-shaped. The cross-section of the annular cavity may be square or rectangular. The cavity is completely or partly filled with the gasket. Patent number: WO/2010/075658 Inventor: C. Xu Publication date: 8 July 2010 Editor’s comment: A selection of groove cavities that are completely filled with a gasket made from an unknown material are illustrated.
Segmented seal with hydrodynamic feature and assembly Applicant: Eaton Corp, USA This invention concerns a segmented shaft seal that is designed to provide better PV capabilities compared with existing designs. A feed cavity, a ramp portion in communication with the feed cavity, a segment trough in communication with the ramp portion, one or more hydrodynamicallyconfigured pads (80), including an entrance; and a sealing dam (82) disposed between the lift pad (80) and the radial internal surface are detailed. In an embodiment of the segment, the ramp portion is configured to pick up air flow with an increase in velocity from the trough or a flow-control portion is configured to prevent fluid from flowing around or circumventing the pad entrance to, at least in part, provide a dynamic feed. Patent number: WO/2010/076634 Publication date: 8 July 2010 A
Seal leakage gas-recovery system Applicant: Flowserve Management Co, USA A dry gas seal leakage recovery system is described that collects leakage gas from one or more mechanical seal assemblies, pressurising and controlling the outlet distribution pressure of the collected seal leakage, and re-injecting the gas back into the compressor or seal supply system. Patent number: WO/2010/074725 Inventors: J. Sears and S. Patterson Publication date: 1 July 2010
A section of the segmented seal with hydrodynamic lift pattern, detailed by patent WO/2010/076634.
Sealing Technology
15
Patent WO/2010/073016 provides details of a seal that is designed to continually regenerate as wear occurs.
to continually regenerate as wear occurs. A device is detailed that provides a seal between a housing for a moving element such as a drill string, piston or the like, and the moving element. The device is composed of a storage well to retain the seal material. The well has an outlet that is connected to an aperture in the housing, enabling the seal material to flow into the space between the housing and the moving element from a inlet port, enabling the seal precursor to be added to the well. A pressurising system forces the seal material out of the aperture. Therefore, the seal can be continually renewed without the need to shut down the operation. Preferably, the seal precursor comprises one or more monomers – each monomer reacting to form a polymer. Polymeric materials can be selected to have the properties required of the seal material. Moreover, the reaction between monomers can be tailored to suite any change in seal material required. Alternatively, the reaction between monomers is initiated thermally. The device includes a means of controlling the temperature of the seal material. Optionally, the seal precursor includes a particulate material which can include polytetrafluoroethylene or a silica glass. Patent number: WO/2010/073016 Inventor: M. McKenzie Publication date: 1 July 2010
Gasket-type orifice and pressure-type flow-control device Applicant: Fujikin Inc, Japan An orifice insert that includes a gasket to seal it in a housing is discussed. Although described as a flow-control device the specific application is not discussed. Patent number: WO/2010/073473 Inventors: T. Hirose, T. Shinohara, T. Yoshida, K. Shigyou and M. Yamaji Publication date: 1 July 2010
Multi-layer metal cylinder-head gasket Applicant: Nippon Gasket Co Ltd, Japan
October 2010
A multi-layer metal cylinder-head gasket is described. A specific feature is the contours of the laminations surrounding oil passages where an extra bead may be formed. Patent number: WO/2010/073796 Inventors: Y. Takeda and M. Kusano Publication date: 1 July 2010
Mechanical seal ring Applicant: Kyocera Corp, Japan This invention concerns a mechanical seal ring that is able to maintain good sliding characteristics even when used continually for long periods, and a mechanical seal, faucet valve and rolling support device that are equipped with this device. Disclosed is a sliding component, which is equipped with a stationary member and a moveable member (that slides in contact with the stationary member), and in which the stationary member and moveable member are each made from a silicon carbide sintered body containing graphite (the graphite content is at least 4% by mass higher in one ring). By producing the sliding component in such a way that the stationary member and moveable member are made of compositions with different graphite content, good sliding characteristics can be achieved through high lubricating action, and sliding can be maintained over long periods. Patent number: WO/2010/073873 Inventors: M. Yashima and Y. Ishimine Publication date: 1 July 2010
Applicant: Zhe Jiang China Valve Co Ltd, China A sealing structure with a groove and gasket is composed of an annular gasket and an annular cavity. For example, the cross-section of the annular gasket may be square, rectangular or O-shaped. The cross-section of the annular cavity may be square or rectangular. The cavity is completely or partly filled with the gasket. Patent number: WO/2010/075658 Inventor: C. Xu Publication date: 8 July 2010 Editor’s comment: A selection of groove cavities that are completely filled with a gasket made from an unknown material are illustrated.
Segmented seal with hydrodynamic feature and assembly Applicant: Eaton Corp, USA This invention concerns a segmented shaft seal that is designed to provide better PV capabilities compared with existing designs. A feed cavity, a ramp portion in communication with the feed cavity, a segment trough in communication with the ramp portion, one or more hydrodynamicallyconfigured pads (80), including an entrance; and a sealing dam (82) disposed between the lift pad (80) and the radial internal surface are detailed. In an embodiment of the segment, the ramp portion is configured to pick up air flow with an increase in velocity from the trough or a flow-control portion is configured to prevent fluid from flowing around or circumventing the pad entrance to, at least in part, provide a dynamic feed. Patent number: WO/2010/076634 Publication date: 8 July 2010 A
Seal leakage gas-recovery system Applicant: Flowserve Management Co, USA A dry gas seal leakage recovery system is described that collects leakage gas from one or more mechanical seal assemblies, pressurising and controlling the outlet distribution pressure of the collected seal leakage, and re-injecting the gas back into the compressor or seal supply system. Patent number: WO/2010/074725 Inventors: J. Sears and S. Patterson Publication date: 1 July 2010
A section of the segmented seal with hydrodynamic lift pattern, detailed by patent WO/2010/076634.
Sealing Technology
15