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Polyurethane elastomeric seal for hydraulic pumps
PATENTS seal for a centrifugal pump and to a new thermal actuator for such a seal. The associated patent describes a thermal actuator for a rotating shaft, shutdown seal that has a piston with a portion of its axial length enclosed within a chamber shell, with a material that expands upon a rise in temperature. The portion of the actual length of the piston within the chamber has at least two different diameters – with the larger diameter leading in the direction of travel of the piston. Following a rise in temperature, expansion of the material surrounding the piston within the chamber creates a force on the piston in the desired direction of travel. Below a preselected temperature the piston is positively locked, with a passive release when the preselected temperature is reached. Patent number: WO/2015/026422 Inventors: P.J. Hawkins and J.E. Hodgson Publication date: 26 February 2015
Cooling device for a sealing arrangement Applicant: KSB Aktiengesellschaft, Germany A cooling device for a mechanical seal has been developed. The sealing arrangement described comprises a first rotating ring and a second fixed ring, which are pressed against one another by a force. A sealing surface is formed between the first and second rings. A cooling device, which is provided on the second fixed ring, has a first region for absorbing heat, which is in direct contact with the second ring, and a second region for dissipating heat. Spring elements, with two transfer points, permanently press the heat absorber against the second ring. Patent number: WO/2015/024760 Inventors: E. Enns, T. Keller, J.H. Lenk and G. Meyer Publication date: 26 February 2015
Slip-on connector to seal a pipe or casing Applicant: Oceaneering International Inc, USA This invention concerns a connector for use on subsea pipelines. In general, this connector is designed to slip onto a tubular, or an extension of a tubular. It may be locked onto the tubular and a seal is created around the tubular to keep pressure trapped inside it. Generally, the connector is slipped over and makes contact with the tubular using a sliding sleeve seal cover. In certain embodiments, when sufficient force is placed on the connector, one or more shear pins, which hold the sleeve, are sheared, enabling the connector to be lowered onto the tubular and the seal to make contact with it.
January 2016
The connector may be locked onto the tubular by means of a one-piece slip energised by a cam – typically held in place mechanically by one or more ratchets. Patent number: WO/2015/026866 Inventors: F.E. Shanks and W.D. Wightman Publication date: 26 February 2015
– such as temperature, vibration and pressure – associated with the seal section. Patent number: WO/2015/026919 Inventors: B.L. Wilson, E.B. Brookbank, K.K. Sheth, S.R. O’Bryan, S.K. Tetzlaff and R. Rutter Publication date: 26 February 2015
High-temperature seal for use in rotary valves
Polyurethane elastomeric seal for hydraulic pumps
Applicant: Fisher Controls International Llc, USA A high-temperature seal (102) for use in a rotary valve forms the subject of this patent. An example of this seal includes a primary seal (134) to engage a flow-control member (104) when the primary seal is in a first condition, and a secondary seal (136), at least partially disposed within the primary seal (134). The primary seal is designed to prevent the secondary seal from engaging the flow-control member (104) when the former is in the first condition and the secondary seal (136) is to engage the flow-control member (104) when the primary seal (134) is in the second condition. Patent number: WO/2015/027006 Inventor: T.F. Jackson Publication date: 26 February 2015
Applicant: Dow Global Technologies Llc, USA A method for forming a piston seal for use in a hydraulic pump has been developed. It involves forming a reaction mixture that includes a prepolymer component, a polyol additive, a diol component and a curative component. The sealing element is then formed from the reaction mixture using a mould, and then cured. The prepolymer component includes a polycarbonate–isocyanate prepolymer that is a reaction product of at least an isocyanate component and a polycarbonate polyol component. Patent number: WO/2015/026613 Inventors: R. Duggal and S.P. Jagtap Publication date: 26 February 2015
A high-temperature seal for use in a rotary valve forms the subject of patent WO/2015/027006. The figure above illustrates an enlarged cross-sectional view of a portion of a butterfly valve, with the seal in a non-degraded condition.
Bead seal Applicant: Parker Hannifin Manufacturing France Sas, France This invention relates to the field of sealing fluid-transport circuits, but more specifically to sealing tube fittings, including instant connection fittings. Annular seals used for such connections frequently have a circular crosssection and are known as O-rings. These seals are obtained by using a mould with two fingerprints, each forming a “half torus” seal. The joint, once moulded has, at the location of the junction of the fingerprint (also called junction plane), an annular barb and optionally an offset of the half-cores in relation to each other. Although widely used, these seals have the disadvantage that they partially rotate on themselves during the introduction of a tube,
Measuring operational parameters in an ESP seal using fibre-optic sensors Applicant: Baker Hughes In, USA The aim of this invention is to measure the operational parameters in an electrical submersible pump (ESP) seal using fibre-optic sensors. The patent describes a seal section for use in a well-bore and includes an optical fibre detection arrangement in which fibre-optic sensors are used to detect an operational parameter
The axial sectional, half-view of the sealing device that forms the subject of patent WO/2015/024984. This design aims to create a fluid-tight connector for tube fittings.
Sealing Technology
13
Cooling device for a sealing arrangement Applicant: KSB Aktiengesellschaft, Germany A cooling device for a mechanical seal has been developed. The sealing arrangement described comprises a first rotating ring and a second fixed ring, which are pressed against one another by a force. A sealing surface is formed between the first and second rings. A cooling device, which is provided on the second fixed ring, has a first region for absorbing heat, which is in direct contact with the second ring, and a second region for dissipating heat. Spring elements, with two transfer points, permanently press the heat absorber against the second ring. Patent number: WO/2015/024760 Inventors: E. Enns, T. Keller, J.H. Lenk and G. Meyer Publication date: 26 February 2015
Slip-on connector to seal a pipe or casing Applicant: Oceaneering International Inc, USA This invention concerns a connector for use on subsea pipelines. In general, this connector is designed to slip onto a tubular, or an extension of a tubular. It may be locked onto the tubular and a seal is created around the tubular to keep pressure trapped inside it. Generally, the connector is slipped over and makes contact with the tubular using a sliding sleeve seal cover. In certain embodiments, when sufficient force is placed on the connector, one or more shear pins, which hold the sleeve, are sheared, enabling the connector to be lowered onto the tubular and the seal to make contact with it.
January 2016
The connector may be locked onto the tubular by means of a one-piece slip energised by a cam – typically held in place mechanically by one or more ratchets. Patent number: WO/2015/026866 Inventors: F.E. Shanks and W.D. Wightman Publication date: 26 February 2015
– such as temperature, vibration and pressure – associated with the seal section. Patent number: WO/2015/026919 Inventors: B.L. Wilson, E.B. Brookbank, K.K. Sheth, S.R. O’Bryan, S.K. Tetzlaff and R. Rutter Publication date: 26 February 2015
High-temperature seal for use in rotary valves
Polyurethane elastomeric seal for hydraulic pumps
Applicant: Fisher Controls International Llc, USA A high-temperature seal (102) for use in a rotary valve forms the subject of this patent. An example of this seal includes a primary seal (134) to engage a flow-control member (104) when the primary seal is in a first condition, and a secondary seal (136), at least partially disposed within the primary seal (134). The primary seal is designed to prevent the secondary seal from engaging the flow-control member (104) when the former is in the first condition and the secondary seal (136) is to engage the flow-control member (104) when the primary seal (134) is in the second condition. Patent number: WO/2015/027006 Inventor: T.F. Jackson Publication date: 26 February 2015
Applicant: Dow Global Technologies Llc, USA A method for forming a piston seal for use in a hydraulic pump has been developed. It involves forming a reaction mixture that includes a prepolymer component, a polyol additive, a diol component and a curative component. The sealing element is then formed from the reaction mixture using a mould, and then cured. The prepolymer component includes a polycarbonate–isocyanate prepolymer that is a reaction product of at least an isocyanate component and a polycarbonate polyol component. Patent number: WO/2015/026613 Inventors: R. Duggal and S.P. Jagtap Publication date: 26 February 2015
A high-temperature seal for use in a rotary valve forms the subject of patent WO/2015/027006. The figure above illustrates an enlarged cross-sectional view of a portion of a butterfly valve, with the seal in a non-degraded condition.
Bead seal Applicant: Parker Hannifin Manufacturing France Sas, France This invention relates to the field of sealing fluid-transport circuits, but more specifically to sealing tube fittings, including instant connection fittings. Annular seals used for such connections frequently have a circular crosssection and are known as O-rings. These seals are obtained by using a mould with two fingerprints, each forming a “half torus” seal. The joint, once moulded has, at the location of the junction of the fingerprint (also called junction plane), an annular barb and optionally an offset of the half-cores in relation to each other. Although widely used, these seals have the disadvantage that they partially rotate on themselves during the introduction of a tube,
Measuring operational parameters in an ESP seal using fibre-optic sensors Applicant: Baker Hughes In, USA The aim of this invention is to measure the operational parameters in an electrical submersible pump (ESP) seal using fibre-optic sensors. The patent describes a seal section for use in a well-bore and includes an optical fibre detection arrangement in which fibre-optic sensors are used to detect an operational parameter
The axial sectional, half-view of the sealing device that forms the subject of patent WO/2015/024984. This design aims to create a fluid-tight connector for tube fittings.
Sealing Technology
13