- Email: [email protected]
Method for producing metallic slide-ring seals
FEATURE/PATENTS In braking-system seals VICTREX WG polymer demonstrates less creep compared with formerly used fluoropolymers such as polytetrafluoroethylene (PTFE). VICTREX polymers have also shown minor moisture absorption and no chemical attack at 120°C (248°F) whilst being immersed in brake fluid. The new wear-grade exhibits a thermal expansion that is in line with metal and no dimensional change under humid conditions. Moulding tight tolerance parts is certainly achievable. This can result in less seal leakage and provides parts that are less expensive than ones made from stainless steel. Compared with PTFE, VICTREX WG polymer has an operating life that is up to four times longer – making it a prime candidate to satisfy future market requirements. When designing for safe, high-performance braking systems, engineers – like 200 million drivers and counting – rely on the same proven track record of their Victrex PEEK braking components.
PATENTS “Half-spoolie” metal seal integral with tube Applicant: General Electric Co, USA This disclosure involves an apparatus and method for sealing a single tube passing through an air gap, to create a service path between regions of different air temperatures within a turbine engine. The structure includes a “spoolie”, engaging a tubesealing service pathway at one end of the tube. A seal is located at the lower end of the tube. This seals the tube. Although the tube extends across the air gap, the service path through the tube remains sealed. Furthermore, thermal growth and relative motion of the system may still occur in the hot environment of the turbine engine without causing problems. The “half-spoolie” metal seal with integral tube design reduces part count and overall system weight claim the inventors. Patent number: WO/2013/162982 Inventors: E.R. Deane, J.K. Remer and J.A. Seal Publication date: 31 October 2013
Seal stem Applicant: Weatherford/ Lamb Inc, USA Embodiments of this invention generally relate to a downhole seal arrangement. In particular, they cover a seal stem arrangement for reconnecting with a tubular. In one embodiment, the 12
Sealing Technology
Conclusion It is not surprising that VICTREX PEEK has been used for sealing applications for several decades because of its proven performance in today’s industrial, oil and gas, and automotive markets. This makes it a clear candidate for applications in extreme environments – from compressors and downhole tools to transmissions and braking systems. As a result, VICTREX PEEK is a reliable and proven option for your nextgeneration sealing needs. Contacts: Victrex Plc, Victrex Technology Centre, Hillhouse International, Thornton Cleveleys, Lancashire FY5 4QD, UK. Tel: +44 1253 897700, Fax: +44 1253 897701, Web: www.victrex.com Americas – Victrex USA Inc, 300 Conshohocken State Road, Suite 120, West Conshohocken, PA 19428, USA. Tel: +1 484 342 6001, Fax: +1 484 342 6002
sealing apparatus includes a mandrel that has at least two portions – the first portion has a seal ring disposed on an exterior surface, whilst the second portion does not. In one embodiment, the seal ring is disposed around the first portion. In another, the burst and collapse integrity of the first portion is substantially the same as the second portion. Patent number: WO/2013/166359 Inventors: G. Givens and R.A. Turley Publication date: 7 November 2013
Method for producing metallic slide-ring seals Applicant: Federal-Mogul Burscheid GmbH, Germany A method has been developed for producing metallic slide-rings and/or counter rings of a slide-ring seal – in particular of a mechanical face seal. This patent describes a semi-finished product created in the form of a cast tube by way of centrifugal casting. The product is clamped within a machine tool, and its inner and/or outer circumferential surface and end surface produce the subsequent sliding surface, which is machined. Annular bodies are then cut from the semi-finished product. Patent number: WO/2013/163968 Inventors: E. Treffler and A. Dengler Publication date: 7 November 2013
Seal assembly for a torque converter Applicant: Caterpillar Inc, USA In one aspect, this disclosure covers a seal assem-
Major developer Based in the UK, Victrex Polymer Solutions, a division of Victrex Plc, is a major developer and producer of high performance polyaryletherketone materials such as VICTREX PEEK, VICOTE Coatings, APTIV Film and VICTREX Pipes. These materials are used in a variety of markets and offer an exceptional combination of properties to help OEMs, designers and processors reach new levels of cost savings, quality and performance. All material production comes under Victrex’s ISO 9001:2008 quality registration. (VICTREX is a registered trademark of Victrex Manufacturing Ltd. VICTREX Pipes is a trademark of Victrex Manufacturing Ltd. PEEK-ESD, HT and WG are trademarks of Victrex Plc. VICOTE and APTIV are registered trademarks of Victrex Plc.)
bly, including a seal carrier that is configured to be coupled to and rotate with a shaft. The carrier defines at least three recesses which receive annular seals. It further includes at least three annular seals configured to provide a seal between the carrier and the non-rotating housing, defining an inner surface having a circular cross-section. One of the three seals is received in one of the three annular recesses, and has a smaller cross-sectional area than that of the other seals. In another aspect, the patent discusses a torque converter, including a housing configured to be rotated by a prime mover, and an impeller coupled to the housing and configured to rotate with the housing, and pump fluid. Patent number: WO/2013/165742 Inventors: J.R. Walker, C.A. Mcintyre and W.M. McClure Publication date: 7 November 2013
Apparatus for controlling water migration into electrical submersible pump motors Applicant: Baker Hughes Inc, USA The subject of this patent is a seal assembly for an electrical submersible pumping system that communicates downhole pressure to a pump motor and seals well-bore fluids from the motor. The seal assembly includes a chamber circumscribing the pump shaft, and a bladder in the chamber. The outer surface of the bladder is in contact with the well-bore fluid. The inside of the bladder contains dielectric fluid that is ported to the pump motor in an annulus between the pump shaft and a sleeve. An elasto-
April 2014
PATENTS “Half-spoolie” metal seal integral with tube Applicant: General Electric Co, USA This disclosure involves an apparatus and method for sealing a single tube passing through an air gap, to create a service path between regions of different air temperatures within a turbine engine. The structure includes a “spoolie”, engaging a tubesealing service pathway at one end of the tube. A seal is located at the lower end of the tube. This seals the tube. Although the tube extends across the air gap, the service path through the tube remains sealed. Furthermore, thermal growth and relative motion of the system may still occur in the hot environment of the turbine engine without causing problems. The “half-spoolie” metal seal with integral tube design reduces part count and overall system weight claim the inventors. Patent number: WO/2013/162982 Inventors: E.R. Deane, J.K. Remer and J.A. Seal Publication date: 31 October 2013
Seal stem Applicant: Weatherford/ Lamb Inc, USA Embodiments of this invention generally relate to a downhole seal arrangement. In particular, they cover a seal stem arrangement for reconnecting with a tubular. In one embodiment, the 12
Sealing Technology
Conclusion It is not surprising that VICTREX PEEK has been used for sealing applications for several decades because of its proven performance in today’s industrial, oil and gas, and automotive markets. This makes it a clear candidate for applications in extreme environments – from compressors and downhole tools to transmissions and braking systems. As a result, VICTREX PEEK is a reliable and proven option for your nextgeneration sealing needs. Contacts: Victrex Plc, Victrex Technology Centre, Hillhouse International, Thornton Cleveleys, Lancashire FY5 4QD, UK. Tel: +44 1253 897700, Fax: +44 1253 897701, Web: www.victrex.com Americas – Victrex USA Inc, 300 Conshohocken State Road, Suite 120, West Conshohocken, PA 19428, USA. Tel: +1 484 342 6001, Fax: +1 484 342 6002
sealing apparatus includes a mandrel that has at least two portions – the first portion has a seal ring disposed on an exterior surface, whilst the second portion does not. In one embodiment, the seal ring is disposed around the first portion. In another, the burst and collapse integrity of the first portion is substantially the same as the second portion. Patent number: WO/2013/166359 Inventors: G. Givens and R.A. Turley Publication date: 7 November 2013
Method for producing metallic slide-ring seals Applicant: Federal-Mogul Burscheid GmbH, Germany A method has been developed for producing metallic slide-rings and/or counter rings of a slide-ring seal – in particular of a mechanical face seal. This patent describes a semi-finished product created in the form of a cast tube by way of centrifugal casting. The product is clamped within a machine tool, and its inner and/or outer circumferential surface and end surface produce the subsequent sliding surface, which is machined. Annular bodies are then cut from the semi-finished product. Patent number: WO/2013/163968 Inventors: E. Treffler and A. Dengler Publication date: 7 November 2013
Seal assembly for a torque converter Applicant: Caterpillar Inc, USA In one aspect, this disclosure covers a seal assem-
Major developer Based in the UK, Victrex Polymer Solutions, a division of Victrex Plc, is a major developer and producer of high performance polyaryletherketone materials such as VICTREX PEEK, VICOTE Coatings, APTIV Film and VICTREX Pipes. These materials are used in a variety of markets and offer an exceptional combination of properties to help OEMs, designers and processors reach new levels of cost savings, quality and performance. All material production comes under Victrex’s ISO 9001:2008 quality registration. (VICTREX is a registered trademark of Victrex Manufacturing Ltd. VICTREX Pipes is a trademark of Victrex Manufacturing Ltd. PEEK-ESD, HT and WG are trademarks of Victrex Plc. VICOTE and APTIV are registered trademarks of Victrex Plc.)
bly, including a seal carrier that is configured to be coupled to and rotate with a shaft. The carrier defines at least three recesses which receive annular seals. It further includes at least three annular seals configured to provide a seal between the carrier and the non-rotating housing, defining an inner surface having a circular cross-section. One of the three seals is received in one of the three annular recesses, and has a smaller cross-sectional area than that of the other seals. In another aspect, the patent discusses a torque converter, including a housing configured to be rotated by a prime mover, and an impeller coupled to the housing and configured to rotate with the housing, and pump fluid. Patent number: WO/2013/165742 Inventors: J.R. Walker, C.A. Mcintyre and W.M. McClure Publication date: 7 November 2013
Apparatus for controlling water migration into electrical submersible pump motors Applicant: Baker Hughes Inc, USA The subject of this patent is a seal assembly for an electrical submersible pumping system that communicates downhole pressure to a pump motor and seals well-bore fluids from the motor. The seal assembly includes a chamber circumscribing the pump shaft, and a bladder in the chamber. The outer surface of the bladder is in contact with the well-bore fluid. The inside of the bladder contains dielectric fluid that is ported to the pump motor in an annulus between the pump shaft and a sleeve. An elasto-
April 2014