Temperature Responsive Feature Patents (Class 277/359)
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Patent number: 10774593Abstract: A seal assembly includes a seal groove defined at least partially between a first member and a second member rotatable relative to the first member, an annular sealing element positioned in the seal groove and providing a mud surface, a lubricant surface axially opposite the mud surface, an inner radial surface, and an outer radial surface radially opposite the inner radial surface. One of the inner and outer radial surfaces is a dynamic surface that seals against the first member when the sealing element rotates with the second member, or seals against the second member when the second member rotates relative to the sealing element. A lubricant channel is defined through the sealing element and extending between the lubricant surface and the dynamic surface to provide a lubricant to the dynamic surface.Type: GrantFiled: May 20, 2016Date of Patent: September 15, 2020Assignee: Halliburton Energy Services, Inc.Inventors: Shiwei Qin, Douglas Bruce Caraway, Micheal Burl Crawford
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Patent number: 10494942Abstract: The invention relates to an inner ring system for an inlet guide vane cascade of a turbomachine. The inner ring system comprises an intermediate casing for accommodating structural loads and an inner ring, which is divided axially into a first ring segment and a second ring segment, which together form recesses for bearing radially inner end portions of guide vanes of the inlet guide vane cascade, wherein at least the second ring segment is fixed in place on the intermediate casing by screw connection. The invention further relates to an inner ring and to an intermediate casing for such an inner ring system, as well as a turbomachine that has such an inner ring system.Type: GrantFiled: November 29, 2016Date of Patent: December 3, 2019Assignee: MTU Aero Engines AGInventors: Lothar Albers, Georg Zotz, Vitalis Mairhanser, Werner Humhauser
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Patent number: 10396618Abstract: In a rotating electric machine with shaft-seal devices mounted thereon, an object to provide them is to uniformize a temperature distribution of a sealing ring with a simple structure. The rotating electric machine with the shaft-seal devices mounted thereon includes a rotor having a shaft; a stator disposed in a circumferential surrounding of the rotor; a sealing ring having a plurality of through holes formed therein, being disposed in a circumferential surrounding of the shaft; a gland seal having an oil supply opening therein, for enclosing a circumferential surrounding of the sealing ring; a partition plate disposed between the sealing ring and the gland seal; and a housing on which the gland seal is fixed, for accommodating the rotor and the stator.Type: GrantFiled: November 29, 2013Date of Patent: August 27, 2019Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Koji Kawashima, Shingo Kingetsu
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Patent number: 10393272Abstract: A sleeve mountable on a rotatable shaft and configured to form a non-contacting seal with a seal ring surrounding and radially spaced from the sleeve, the sleeve including a radially inner surface configured to be mounted on the rotatable shaft, a radially outer surface, an axially inner surface between the radially inner surface and the radially outer surface, an axially outer surface between the radially inner surface and the radially outer surface and a bore configured to provide fluid communication between gas at the axially inner surface of the sleeve and the radially outer surface of the sleeve.Type: GrantFiled: November 24, 2015Date of Patent: August 27, 2019Assignee: Kaydon Ring & Seal, Inc.Inventor: William Kelvin Mosley
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Patent number: 10196919Abstract: A turbine shroud adapted for use in a gas turbine engine includes a plurality of metallic carrier segments and a plurality of blade track segments mounted to corresponding metallic carrier segments. Cooling air is directed onto the blade track segments to cool the blade track segments when exposed to high temperatures in a gas turbine engine.Type: GrantFiled: January 22, 2016Date of Patent: February 5, 2019Assignees: Rolls-Royce North American Technologies Inc., Rolls-Royce CorporationInventors: Mark O'Leary, Daniel K. Vetters, Matthew R. Brandt, Ted J. Freeman
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Patent number: 9945243Abstract: A turbine shroud for a gas turbine engine is adapted to extend around a bladed turbine wheel and prevent gasses from passing over the blades without interacting with the blades. The turbine shroud includes a carrier, a blade track, and a plurality of biasing members. The biasing members locate the blade track relative to the carrier.Type: GrantFiled: September 17, 2015Date of Patent: April 17, 2018Assignee: Rolls-Royce CorporationInventor: Mark O'Leary
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Patent number: 8770589Abstract: A shaft-seal device for high-temperature fluid including a seal case (2) formed as a metallic cylindrical structure of a single unit and comprised of a main body portion (2a, 2b, 2c), first and second holding portions (2d, 2e), first and second partition portions (2f, 2h), a channel formation portion (2g) forming a minute annular channel (27) with the outer circumference surface of a rotary shaft (1), and an o-ring holding portion (2i). The seal case is installed in an apparatus housing (8) with first and second o-rings (2m, 2n) in between. The intra-seal case region (A1), in which sealing rings (31, 32, 41, 42, 51, 52) of mechanical seals (3, 4, 5) are provided, and the high-temperature fluid region, which is an intra-apparatus housing region (A), are partitioned by a cooling chamber (28) into and from which coolant (82) is supplied and discharged via feed/discharge coolant paths (80, 81).Type: GrantFiled: June 25, 2012Date of Patent: July 8, 2014Assignees: Nippon Pillar Packaging Co., Ltd., Hitachi, Ltd.Inventors: Taiji Hashimoto, Tao Hu, Eiji Okumachi, Masanobu Ninomiya
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Publication number: 20140075948Abstract: A fire seal includes a molded body having a base portion, a curved portion extending from the base portion, and a metal seal support surrounding said base portion and a radially inward surface of said curved portion. The curved portion has a partially circular cross section.Type: ApplicationFiled: September 18, 2012Publication date: March 20, 2014Applicant: UNITED TECHNOLOGIES CORPORATIONInventor: Matthew Exner
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Publication number: 20120326394Abstract: A shaft-seal device for high-temperature fluid including a seal case (2) formed as a metallic cylindrical structure of a single unit and comprised of a main body portion (2a, 2b, 2c), first and second holding portions (2d, 2e), first and second partition portions (2f, 2h), a channel formation portion (2g) forming a minute annular channel (27) with the outer circumference surface of a rotary shaft (1), and an o-ring holding portion (2i). The seal case is installed in an apparatus housing (8) with first and second o-rings (2m, 2n) in between. The intra-seal case region (A1), in which sealing rings (31, 32, 41, 42, 51, 52) of mechanical seals (3, 4, 5) are provided, and the high-temperature fluid region, which is an intra-apparatus housing region (A), are partitioned by a cooling chamber (28) into and from which coolant (82) is supplied and discharged via feed/discharge coolant paths (80, 81).Type: ApplicationFiled: June 25, 2012Publication date: December 27, 2012Applicants: Nippon Pillar Packing Co., Ltd., Hitachi Plant Technologies, Ltd.Inventors: Taiji Hashimoto, Tao Hu, Eiji Okumachi, Masanobu Ninomiya
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Patent number: 7878509Abstract: A mechanical seal has a seal cover attached to an outer surface of a device body, a fitting surface through which a shaft is insertable, and defines a space further away from a machine than the fitting surface. A quenching path penetrates the space and supplies quenching fluid therein. A first seal ring has a movement surface fitted to the fitting surface and a seal surface inward of the space section. A second seal ring has a relative slide seal surface in tight contact with the seal surface of the first seal ring and a seal surface that faces a restriction surface. A seal collar holds the second seal ring in a sealed state and is sealingly fixed to the shaft. A packing is in tight contact with the seal surface of the second seal ring and the restriction surface to prevent quenching fluid from leaking out of the machine.Type: GrantFiled: August 26, 2005Date of Patent: February 1, 2011Assignee: Eagle Industry Co., Ltd.Inventor: Hidekazu Takahashi
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Patent number: 7857319Abstract: A mechanical end face seal with a pair of annular relatively rotating seal face defining seal rings. An annular compression contact ring disposed in surrounding relation to one of the seal rings includes a plurality of pads at asymmetrical locations in interference contact with the outer cylindrical surface of the ring.Type: GrantFiled: June 6, 2007Date of Patent: December 28, 2010Assignee: John Crane Inc.Inventors: Thomas Steigerwald, Michael Kalodimos, Douglas Volden
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Patent number: 7431303Abstract: A mechanical face seal, for sealing about a rotating shaft, includes a seal head assembly in sealing engagement with a seal seat assembly. The seal seat assembly has a washer with a portion that is sandwiched between a grommet and a seal seat. Another portion of the washer is sandwiched between a sleeve or shoulder on the shaft and an impeller. Frictional heat generated by the seal can be conducted away from the seal seat to the sleeve or shoulder on the shaft, which is particularly advantageous when the face seal is operated without water adjacent to the seal seat.Type: GrantFiled: January 14, 2004Date of Patent: October 7, 2008Assignee: Freudenberg-NOK General PartnershipInventor: John Dahlheimer
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Publication number: 20080240964Abstract: A shaft seal device is provided, with which an optimum radial clearance is always maintained between the inner circumferential surface of a carbon ring and an outer circumferential surface of a rotor shaft sleeve when temperature thereof varies in operation of the oil-free rotary compressor, and gas leak through the radial clearance can be suppressed to a minimum not influenced by operation condition of the compressor and intrusion of lubricating oil into the rotor chamber is prevented. As a result, an oil-free rotary compressor can be operated to discharge clean compressed gas not contaminated with lubrication oil.Type: ApplicationFiled: March 31, 2008Publication date: October 2, 2008Applicant: ANEST IWATA CORPORATIONInventors: Hideyuki KIMURA, Shigemi SATO, Junichi TAKEMOTO
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Publication number: 20080079222Abstract: A dynamic radial shaft assembly and methods of use for rotating or reciprocating shafts include an elastic seal member having at least a portion thereof in sealing communication with the rotating or reciprocating shaft; and a shape memory alloy element in contact with the elastic seal member, wherein the shape memory alloy element is adapted to change a shape orientation and or modulus property as a function of temperature change so as to change or maintain a compressive force and/or sealing area of the seal member portion against the rotating or reciprocating shaft at temperatures from ?55° C. to about 250° C.Type: ApplicationFiled: September 28, 2006Publication date: April 3, 2008Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Chandra S. Namuduri, Alan L. Browne, Nancy L. Johnson
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Publication number: 20070284830Abstract: A mechanical end face seal with a pair of annular relatively rotating seal face defining seal rings. An annular compression contact ring disposed in surrounding relation to one of the seal rings includes a plurality of pads at asymmetrical locations in interference contact with the outer cylindrical surface of the ring.Type: ApplicationFiled: June 6, 2007Publication date: December 13, 2007Applicant: JOHN CRANE INC.Inventors: Thomas STEIGERWALD, Michael KALODIMOS, Douglas VOLDEN
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Publication number: 20070210526Abstract: A seal assembly for use with a rotating shaft. The seal assembly comprises a seal ring, a seal ring shell and bellows. The seal ring defines an axially extending annular surface and a radially extending seal face. The seal ring shell has a front piece and a back piece secured together. The front piece includes a foot portion defining an axially extending engagement surface for interference-fit engagement with the annular surface of the seal ring. The front piece further includes a radially extending shin portion connected to the foot portion and located radially outward of the foot portion. The foot portion includes an inner foot portion extending axially from connection of the foot portion with the shin portion. The foot portion at its engagement surface has an axial length. The inner foot portion at its engagement surface has an axial length. The shin portion has an axial length. The bellows defines an effective diameter at zero pressure applied on the seal ring.Type: ApplicationFiled: March 7, 2007Publication date: September 13, 2007Applicant: John Crane Inc.Inventors: Prithwish Basu, David P. Casucci
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Patent number: 7128522Abstract: A gas turbine engine expansion joint comprises first and second members having confronting faces defining a gap therebetween. At room temperature, the gap varies in accordance with the temperature distribution profile of the first and second members during normal engine operation.Type: GrantFiled: October 28, 2003Date of Patent: October 31, 2006Assignee: Pratt & Whitney Canada Corp.Inventor: Martin Jutras
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Patent number: 7082962Abstract: An intelligent seal support management system includes a device for automatically compensating for increased heat or decreased heat in a vessel.Type: GrantFiled: October 31, 2002Date of Patent: August 1, 2006Assignee: AES Engineering LimitedInventors: Nadim Tahir, James F. McKeever, Alan Roddis
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Patent number: 7066469Abstract: A seal assembly for a machinery housing includes a seal ring having a micro heat exchanger and a gland plate for securing the seal ring to the machinery housing. The gland plate includes a cooling fluid port in communication with the micro heat exchanger.Type: GrantFiled: August 6, 2002Date of Patent: June 27, 2006Assignees: University of Kentucky Research Foundation Board of Supervisors of Louisiana State University, Agricultural and Mechanical CollegeInventors: Lyndon Scott Stephens, Kevin W. Kelly
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Patent number: 6959929Abstract: A seal for a rotary compressor comprises a casing, at least one assembly having a rotating seal face ring which rotates as one with a sleeve intended to be mounted on a shaft of the compressor and of a stationary seal face ring mounted on the casing, the seal face rings being urged to press against one another via their rubbing face. The seal design further incorporates fluid circulation for heating leaks of compressible fluid conveyed by the compressor that occur between the seal face rings, this fluid circulation being formed in the casing and extending at least partially downstream of the seal face rings with respect to the direction of flow of the fluid stream.Type: GrantFiled: July 26, 2002Date of Patent: November 1, 2005Assignee: ThermodynInventors: Jean-Marc Pugnet, Daniel Bolusset, Patrick Friez
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Patent number: 6932348Abstract: Even high viscosity fluid or slurry-contained fluid can be securely sealed without deficiency of a liquid sealing device. The sealing liquid device includes an annular packing made of rubber-like elastic material, the annular packing having a secured section fitted with fluid tight to one retaining surface between the first stationary seal ring and the seal flange and having a seal lip section fitting to the other contact face for sealing.Type: GrantFiled: August 28, 2002Date of Patent: August 23, 2005Assignee: Eagle Industry Co., Ltd.Inventor: Hidekazu Takahashi
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Patent number: 6918594Abstract: A composite face seal has an annular seal rotor and an annular seal stator, both having a metal base portion and a radially extending flange. The flange has first and second axially facing surfaces. A first ceramic ring may be mounted to the first surface of the flange of either or both of the seal rotor and the seal stator by a first braze joint. A second ceramic ring may be mounted to the second surface of the flange of either or both of the seal rotor and the seal stator by a second braze joint. Each of the braze joints may include a molybdenum ring disposed between two braze rings or, for thicker seal assemblies, molybdenum and nickel rings disposed between braze rings.Type: GrantFiled: October 15, 2003Date of Patent: July 19, 2005Assignee: Honeywell International, Inc.Inventors: Steven E. Sund, James V. Guiheen, Alan O. Lebeck, Raymond J. Knorr
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Patent number: 6688602Abstract: The mechanical seal (3) includes: a rotary side sliding ring (32) which is supported by the large diameter side outer circumferential face (23) of the annular step section (21) of the rotary shaft (2) via the rotary side O-ring (37) and press-fitted into the annular step section (21) by gas pressure in the device; and an unturnable stationary side sliding ring (31) which is fixed onto the seal housing (1) side via the stationary side O-ring (33) being capable of moving in the axial direction and being able to come into close contact with the sliding protrusion (323) of the rotary side sliding ring (32) due to the spring (36) so that the airtightly sealed sliding face S is formed. The rotary side sliding ring (32) is made of self-lubrication sliding material, and the stationary side sliding ring (31) is made of sliding material, the Young's modulus of which is higher than that of the self-lubrication sliding material.Type: GrantFiled: January 2, 2002Date of Patent: February 10, 2004Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Takeshi Yamada, Takayuki Imai, Yoshiaki Takigahira
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Patent number: 6616145Abstract: A face seal device for use with components rotating at a high rotational speed includes a non-rotating face seal ring (5) and a rotary face seal ring (11) mounted in a loose fit on and rotatable together with the rotary component. The rotary face seal ring includes a sealing face (6) which, in operation, is essentially radially aligned for cooperation with an opposite sealing face (16) of the non-rotating face seal ring. The rotary face seal ring is formed of at least a base portion (20) and an extension portion (21). The extension portion provides an additional mass and has an areal center of gravity axially spaced from the areal center of gravity of the base portion An axial spacing z between the areal centers of gravity and the mass m of the extension portion are in specific relationship with each other, whereby in operation a torque directed towards the non-rotating face seal ring is applied to the rotary face seal ring.Type: GrantFiled: November 23, 2001Date of Patent: September 9, 2003Assignee: Burgmann Dichtungswerke GmbH & Co. KGInventors: Berthold Schulten, Werner Wolf, Peter Haselbacher, Thomas Keller
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Patent number: 6568684Abstract: A method of forming a seal assembly around a shaft is disclosed. The method includes (a) urging a first seal member against a second seal member so as to produce a load between a first seal face and a second seal face, (b) measuring the load produced between the first seal face and the second seal face during the urging step, and (c) securing a first support member to the shaft when a predetermined load value between the first seal face and the second seal face is attained so as to fix the relative position between the first seal member and the second seal member such that the predetermined load is substantially maintained between the first seal face and the second seal face. An associated seal assembly geometry is also disclosed.Type: GrantFiled: May 4, 2001Date of Patent: May 27, 2003Assignee: Caterpillar Inc.Inventors: Billy R. Bedford, Timothy M. Waters
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Publication number: 20030047878Abstract: The invention relates to a wall (21) which can be thermally impinged upon by a hot gas (17). A gap (55) is created between a first segment (35) and a second segment (33) of the wall by deforming a bending element (45) of the second wall segment (33) at high temperatures. The bending element (45) is pressed against a pressing surface (49) of the first segment (35) of the wall. Deformation is caused by different types of thermal expansion of a hot and cold side of the bending element (45), whereby the gap (55) is sealed in a highly effective manner even at high temperatures.Type: ApplicationFiled: July 19, 2002Publication date: March 13, 2003Inventors: Hans-Thomas Bolms, Peter Tiemann
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Patent number: 6503061Abstract: A heat dissipating and power cutting-off device of a pump has a heat dissipating ceramics ring fitted in a plastic member to form watertight connection in between to prevent water from flowing to a motor. The plastic member has a pivotal hole for a main blade wheel connected to a shaft of the motor, and for a shaft seal tightly fitted in same and said ceramics ring. The ring has an annular trench forming between on outer and an inner annular portions for increasing contact area with water so that heat passing through said ring can be dissipated to prevent plastic member from getting melted by said heat. A power cutting-off member is connected to the motor, and has a sensing element abutting the ceramics ring to sense a temperature of same for activation of the cutting-off member when a racing of the motor occurs to cause temperature of both the motor and the ring to rise.Type: GrantFiled: June 26, 2001Date of Patent: January 7, 2003Inventor: Wei-Sheng Wang
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Patent number: 6425583Abstract: A rotary ring has a seal end face located at an end of the axial line direction thereof perpendicularly to the axial line and an anti-seal end face located at the other end thereof in the axial line direction, wherein the seal end face and the seal end face of a fixed ring slide each other through a subject to be sealed. The cross-sectional shape of the rotary ring is made asymmetric with respect to right and left by forming a step around the outer peripheral portion thereof so that the center of gravity of the rotary ring is located at a position nearer to the anti-seal end face than the center of the plate thickness thereof. With this arrangement, the convex deformation made to the seal end face by the deformation of the rotary ring due to heat is canceled by the concave deformation made to the seal end face by a large amount of centrifugal force acting on the anti-seal end face. Accordingly, the rotary ring exhibits a stable sealing property.Type: GrantFiled: September 13, 1999Date of Patent: July 30, 2002Assignees: Eagle Industry Company, Limited, Ebara CorporationInventor: Ryoji Muraki
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Patent number: 6202668Abstract: A valve with fire-resistant seal for use in industrial piping applications. The valve includes a valve body with a valve element therein. The valve is illustrated as a ball valve, but other valve configurations could also be used. A valve stem engages the valve element so that it can be rotated between open and closed positions. A conventional primary seal is used on the valve stem for normal conditions. The valve body defines a body bearing surface, and the valve stem defines a facing stem bearing surface. A thrust bearing is disposed between the body and stem bearing surfaces, and a fire-resistant seal is positioned radially inwardly from the thrust bearing. Initially, the fire-resistant seal is not engaged with at least one of the body or stem bearing surfaces, and the fire-resistant seal has a thickness less than an initial thickness of the thrust bearing.Type: GrantFiled: March 20, 1998Date of Patent: March 20, 2001Assignee: North American CorporationInventor: Robert E. Maki
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Patent number: 6039810Abstract: A high temperature vapor coating container, including a hollow interior, resists distortion and cracking at a vapor coating temperature of at least about 1700.degree. F. as a result of making the container of a nonmetallic material having a coefficient of thermal expansion of less than about 4.5.times.10.sup.-6 at the vapor coating temperature, the material being nonreactive with the coating vapor at the vapor coating temperature.Type: GrantFiled: November 13, 1998Date of Patent: March 21, 2000Assignee: General Electric CompanyInventors: Thomas E. Mantkowski, Nripendra N. Das, Raymond W. Heidorn, Jackie L. King