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Bellows fluid seal
PATENTS Strip gasket Applicant: Hoffman Enclosures Inc, USA The strip gasket that forms the subject of this patent includes one or more adhesive strips on its base. A non-stretchable carrier is located within this adhesive strip. This helps prevent the gasket from being stretched. The strip gasket is also able to create a tight seal when it is installed against a desired surface. This prevents water and other particulate matter from passing around the gasket. Patent number: WO/2016/061397 Inventors: J. Schlueter, N.L. Westby, T. Jones, L. Salmi and L. Krynski Publication date: 21 April 2016
Sealing device for a gas turbine combustor Applicants: General Electric Technology GmbH, Switzerland; and J. Metternich, S.W. Jorgensen, D. Giel and R. Keshava-Bhattu – USA This invention concerns a novel apparatus and way of sealing a portion of a gas turbine combustor in order to regulate the flow of compressed air into an annular passage adjacent to a combustion liner. A compressible seal is used that has first and second annular portions, and a transition portion. The compressible seal regulates airflow via a plurality of openings and/or axially extending slots. Patent number: WO/2016/061101 Inventors: J. Metternich, S.W. Jorgensen, D. Giel and R. Keshava-Bhattu Publication date: 21 April 2016
Process for forming a seal for a turbine engine Applicant: Dynamic Metals Llc, USA A process for forming a turbine engine seal has been developed and forms the subject of this patent. It involves a series of steps. First an asymmetric profile is formed in a flat strip of material using a rolling process. The formed asymmetric profile is then coiled into an overlapping ring shape, and the circular shape is cut to a predetermined length, and the ends are joined to form the seal. The seal includes at least two “peaks” that are formed on opposing sides of a gap. These peaks contact opposing sides of a U-shaped profile at a zero radius. Patent number: WO/2016/061075 Inventors: B. Buitenhuis and J. Opielka Publication date: 21 April 2016
March 2017
Resilient seals for a guided-wave radar level measurement device Applicant: Honeywell International Inc, USA This patent provides details of seals for a guidedwave radar level measurement device that includes a process connection which consists of an outer conductor and a central conductor. The latter is surrounded in part by a dielectric material. Part of this device is a “probe” that is composed of the lower central conductor, which connects to the central conductor. One or more resilient metal seals can be employed to form a hermetic seal around a portion of the probe. The metal seal protects the dielectric material such that the hermetic seal is isolated from a process and temperature shock. The metal seal (or seals) can be further mated with one or more insulators and one or more gaskets. The metal seals provide a thermal and mechanical barrier and are resistant to chemicals. Patent number: WO/2016/060898 Inventor: S.J. Heath Publication date: 21 April 2016
“Setting retarder” for the tail seal used in a shield tunneling machine Applicant: JX Nippon Oil & Energy Corp, Japan This invention describes what is referred to as a “setting retarder” for a tail seal composition for a shield tunneling machine. The composition prevents the adherence of a brush seal and a segment even when a backfill agent infiltrates a brush seal portion, say the inventors. According to the associated patent, the composition contains a lubricating oil base-oil, a thickener and a fibre. It consists of at least one compound selected from organic compounds that have two or more hydroxyl groups or have a hydroxyl group and carboxyl group, or includes at least one compound selected from the organic compounds. The composition contains [A] 15–60 mass% of the lubricating oil base-oil; [B] 35–75 mass% of the thickener; [C] 0.5– 15 mass% of fibre; and [D] 0.1–10 mass% of at least one compound selected from organic compounds that have two or more hydroxyl groups or have a hydroxyl group and carboxyl group. Patent number: WO/2016/063899 Inventors: T. Arai and Y. Tokumo Publication date: 28 April 2016
Improved sealing member for a pressure-testing apparatus Applicant: IK-UK Ltd, UK This invention relates to an improved sealing member for a pressure-testing apparatus. The
apparatus described is designed for pressure testing in pipes and other conduits intended to carry a fluid under high pressure. More specifically, though not exclusively, this invention relates to an elastomeric sealing member for this apparatus that deployable in pipes and other conduits intended to carry high-pressure fluids such as hydrocarbons or the like. The sealing member incorporates a plurality of reinforcement elements. Patent number: WO/2016/063051 Inventor: I. Short Publication date: 28 April 2016
Bellows fluid seal Applicant: Graco Minnesota Inc, USA A bellows seal for a fluid-dispensing system forms the subject of this patent. The seal described has a generally circular cross-section with a first end that has a first diameter. The seal also has a second end that has a second diameter, which is smaller than the diameter of the first end. The bellows seal further includes a contoured external surface, extending between the first and second end. The external surface includes a cylindrical portion extending from the first end, an undulating portion (which includes a convex portion extending from the cylindrical portion and a concave portion extending from the convex portion), and a tapered portion extending from the concave portion to the second end. A flexible region is defined between a first point located on the cylindrical portion and a second point located on the concave portion. Patent number: WO/2016/069870 Inventors: P.J. Haffley, M.R. Theisen and P.R. Quam Publication date: 6 May 2016
Flow-control device and method of using it in well-bore completion assemblies Applicant: Baker Hughes Inc, USA A completion assembly for use in a well-bore is disclosed. In one non-limiting embodiment it includes a tubular member that has at least one packer to isolate a zone between the completion assembly and the well-bore, and a flow-control device for closing off the flow of fluid through the tubular member. This flow-control device incorporates a valve that includes a fluid flowpath and a seal member configured to close the fluid flow-path, and a fluid-activated device that cycles each time a pressure differential is created across the flow path and moves the seal member to close the valve after completion of a selected number of cycles.
Sealing Technology
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Sealing device for a gas turbine combustor Applicants: General Electric Technology GmbH, Switzerland; and J. Metternich, S.W. Jorgensen, D. Giel and R. Keshava-Bhattu – USA This invention concerns a novel apparatus and way of sealing a portion of a gas turbine combustor in order to regulate the flow of compressed air into an annular passage adjacent to a combustion liner. A compressible seal is used that has first and second annular portions, and a transition portion. The compressible seal regulates airflow via a plurality of openings and/or axially extending slots. Patent number: WO/2016/061101 Inventors: J. Metternich, S.W. Jorgensen, D. Giel and R. Keshava-Bhattu Publication date: 21 April 2016
Process for forming a seal for a turbine engine Applicant: Dynamic Metals Llc, USA A process for forming a turbine engine seal has been developed and forms the subject of this patent. It involves a series of steps. First an asymmetric profile is formed in a flat strip of material using a rolling process. The formed asymmetric profile is then coiled into an overlapping ring shape, and the circular shape is cut to a predetermined length, and the ends are joined to form the seal. The seal includes at least two “peaks” that are formed on opposing sides of a gap. These peaks contact opposing sides of a U-shaped profile at a zero radius. Patent number: WO/2016/061075 Inventors: B. Buitenhuis and J. Opielka Publication date: 21 April 2016
March 2017
Resilient seals for a guided-wave radar level measurement device Applicant: Honeywell International Inc, USA This patent provides details of seals for a guidedwave radar level measurement device that includes a process connection which consists of an outer conductor and a central conductor. The latter is surrounded in part by a dielectric material. Part of this device is a “probe” that is composed of the lower central conductor, which connects to the central conductor. One or more resilient metal seals can be employed to form a hermetic seal around a portion of the probe. The metal seal protects the dielectric material such that the hermetic seal is isolated from a process and temperature shock. The metal seal (or seals) can be further mated with one or more insulators and one or more gaskets. The metal seals provide a thermal and mechanical barrier and are resistant to chemicals. Patent number: WO/2016/060898 Inventor: S.J. Heath Publication date: 21 April 2016
“Setting retarder” for the tail seal used in a shield tunneling machine Applicant: JX Nippon Oil & Energy Corp, Japan This invention describes what is referred to as a “setting retarder” for a tail seal composition for a shield tunneling machine. The composition prevents the adherence of a brush seal and a segment even when a backfill agent infiltrates a brush seal portion, say the inventors. According to the associated patent, the composition contains a lubricating oil base-oil, a thickener and a fibre. It consists of at least one compound selected from organic compounds that have two or more hydroxyl groups or have a hydroxyl group and carboxyl group, or includes at least one compound selected from the organic compounds. The composition contains [A] 15–60 mass% of the lubricating oil base-oil; [B] 35–75 mass% of the thickener; [C] 0.5– 15 mass% of fibre; and [D] 0.1–10 mass% of at least one compound selected from organic compounds that have two or more hydroxyl groups or have a hydroxyl group and carboxyl group. Patent number: WO/2016/063899 Inventors: T. Arai and Y. Tokumo Publication date: 28 April 2016
Improved sealing member for a pressure-testing apparatus Applicant: IK-UK Ltd, UK This invention relates to an improved sealing member for a pressure-testing apparatus. The
apparatus described is designed for pressure testing in pipes and other conduits intended to carry a fluid under high pressure. More specifically, though not exclusively, this invention relates to an elastomeric sealing member for this apparatus that deployable in pipes and other conduits intended to carry high-pressure fluids such as hydrocarbons or the like. The sealing member incorporates a plurality of reinforcement elements. Patent number: WO/2016/063051 Inventor: I. Short Publication date: 28 April 2016
Bellows fluid seal Applicant: Graco Minnesota Inc, USA A bellows seal for a fluid-dispensing system forms the subject of this patent. The seal described has a generally circular cross-section with a first end that has a first diameter. The seal also has a second end that has a second diameter, which is smaller than the diameter of the first end. The bellows seal further includes a contoured external surface, extending between the first and second end. The external surface includes a cylindrical portion extending from the first end, an undulating portion (which includes a convex portion extending from the cylindrical portion and a concave portion extending from the convex portion), and a tapered portion extending from the concave portion to the second end. A flexible region is defined between a first point located on the cylindrical portion and a second point located on the concave portion. Patent number: WO/2016/069870 Inventors: P.J. Haffley, M.R. Theisen and P.R. Quam Publication date: 6 May 2016
Flow-control device and method of using it in well-bore completion assemblies Applicant: Baker Hughes Inc, USA A completion assembly for use in a well-bore is disclosed. In one non-limiting embodiment it includes a tubular member that has at least one packer to isolate a zone between the completion assembly and the well-bore, and a flow-control device for closing off the flow of fluid through the tubular member. This flow-control device incorporates a valve that includes a fluid flowpath and a seal member configured to close the fluid flow-path, and a fluid-activated device that cycles each time a pressure differential is created across the flow path and moves the seal member to close the valve after completion of a selected number of cycles.
Sealing Technology
13