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公开(公告)号：US11448322B2
公开(公告)日：2022-09-20
申请号：US17050893
申请日：2019-03-11
发明人： Peter Droscher , Hans Steigenberger
IPC分类号： F16J15/34
摘要： The invention relates to a mechanical seal arrangement comprising a mechanical seal (10) including a rotating slide ring (2) and a stationary slide ring (3), defining a seal gap (4) therebetween, a one-piece, ring-shaped slide ring carrier (5), which holds the stationary slide ring (3), a one-piece, ring-shaped cover (6), which is arranged on the slide ring carrier (5), a one-piece, ring-shaped housing (7), which is detachably fixed to the cover (6) using fixing device (8), and a one-piece first retaining ring (9), which is detachably arranged on the slide ring carrier (5), wherein the stationary slide ring (3) is clamped between the first retaining ring (9) and the cover (6), and wherein the slide ring carrier (5) is connected to the slide ring carrier (5) by means of at least one elastic biasing member (19) such that the slide ring carrier (5) can perform movements in the axial direction of the mechanical seal arrangement together with the stationary slide ring (3).
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公开(公告)号：US11441685B2
公开(公告)日：2022-09-13
申请号：US15649246
申请日：2017-07-13
申请人： Magnetic Seal LLC
发明人： Paul Richard Ryan
IPC分类号： F16J15/34 , F16J15/00 , F16J15/3252 , F16J15/3268
摘要： The rotary face seal with magnet loading replaces known spring mechanisms with magnetic technology that provides a consistent load with minimal variation, which is not affected by natural frequency and material fatigue due to cyclic loading. This improves seal performance and service life. The tubular magnetic ring is advantageous because it replaces existing seals within stationary cartridge with a puller type magnetic assembly design that results with the stationary cartridges being an exact exchange. The use of magnetic technology attached to the outside diameter of the rotating mating ring, which is attached to the shaft, that does not produce eddy currents because it is of a single pole configuration. The single pole magnetic assembly design is achieved by either axial or radial magnet orientation, such as in the form of a tubular magnetic band locating in a circumferential notch in the rotating mating ring.
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公开(公告)号：US20220275865A1
公开(公告)日：2022-09-01
申请号：US17636786
申请日：2020-08-25
发明人： Masao OKA
摘要： A sliding component includes a pair of seal rings which are arranged to rotate relative to each other. The seal rings have sliding surfaces, respectively, which are facing each other. The sliding surfaces are provided with: a land continuously extending in a circumferential direction; inward recessed portions recessed in an axial direction, extending to a radially inner side, and open to the radially inner side; and outward recessed portions recessed in the axial direction, extending to a radially outer side, and open to the radially outer side.
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公开(公告)号：US20220275807A1
公开(公告)日：2022-09-01
申请号：US17625215
申请日：2020-07-03
IPC分类号： F04D29/12 , F16J15/3204 , F16J15/34
摘要： A seal arrangement is described for providing a seal between a rotatable shaft and a housing having a wall through which the shaft extends. The seal arrangement includes, in series, a mechanical seal and a gland seal. The mechanical seal is positioned axially inwardly of the gland seal such that the mechanical seal forms a first stage or primary seal and the gland seal forms a secondary seal.
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公开(公告)号：US11371615B2
公开(公告)日：2022-06-28
申请号：US17190825
申请日：2021-03-03
摘要： A method of determining wear of a seal element includes rotating a seal plate relative to the seal element and such that the seal plate and the seal element form a rotational sealing interface. The seal element includes an insert embedded in the seal element. A portion of the seal element is worn with a sealing face of the seal plate. The insert is contacted with the sealing face of the seal plate. A portion of the insert is worn to create a wear particle of the insert. The presence of the wear particle in a lubrication oil is sensed with an oil monitoring system.
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公开(公告)号：US11365640B2
公开(公告)日：2022-06-21
申请号：US16576206
申请日：2019-09-19
发明人： Michael M. Davis
摘要： An assembly is provided for rotational equipment. This assembly includes a stationary structure, a rotating structure, a seal element and an anti-rotation lock. The rotating structure is rotatable about an axis. The rotating structure is configured as or otherwise includes a seal land. The seal element is configured to seal a gap between the stationary structure and the seal land. The seal element extends circumferentially about the axis. The seal element axially contacts the seal land. The anti-rotation lock projects radially into the stationary structure and the seal element. The anti-rotation lock is configured to at least substantially prevent rotation of the seal element relative to the stationary structure.
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公开(公告)号：US11346448B2
公开(公告)日：2022-05-31
申请号：US16589588
申请日：2019-10-01
发明人： Pawel Rak
摘要： A seal assembly having: a carbon ring annularly extending about a central axis and having an outer face, and a shrink band annularly extending about the central axis, the shrink band having an inner face, the inner face in contact with the outer face of the carbon ring at a contact interface defined therebetween, the inner face of the shrink band protruding axially beyond the contact interface.
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公开(公告)号：US11339719B2
公开(公告)日：2022-05-24
申请号：US16859328
申请日：2020-04-27
发明人： Benjamin Nasman , Michael M. Davis
摘要： An assembly is provided for rotational equipment. This assembly includes a first component, a static structure, a guide rail and a second component. The static structure includes a static structure fluid passage. The guide rail is mounted to the static structure. The guide rail includes a guide rail fluid passage and a nozzle. The guide rail fluid passage fluidly couples the static structure fluid passage to a nozzle orifice of the nozzle. The nozzle is configured to direct fluid onto the first component through the nozzle orifice. The second component is mated with and configured to translate along the guide rail.
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公开(公告)号：US20220136607A1
公开(公告)日：2022-05-05
申请号：US17360288
申请日：2021-06-28
申请人： John Crane Inc.
摘要： A mechanical seal assembly adapted for arrangement around a rotating shaft of a rotating device and has first and a second seal rings. The assembly also includes an annular carrier having a base and a removable end portion configured to be affixed to a housing of the rotating device. The assembly also includes an annular flexible sealing membrane. The membrane includes an outer portion arrangeable between the first seal ring and a biasing mechanism and that is axially shiftable relative to the rotating shaft. The membrane also includes an inner portion surrounded by the outer portion and positioned between the base and the removable end portion of the annular carrier and the base and a removable end portions hold the inner portion in fixed relative to the annular carrier as the outer portion shifts relative to the rotating shaft.
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公开(公告)号：US20220099191A1
公开(公告)日：2022-03-31
申请号：US17420660
申请日：2019-12-06
发明人： Hiroshi SUZUKI , Yuichiro TOKUNAGA , Yuta NEGISHI , Hiroki INOUE , Shogo FUKUDA , Wataru KIMURA
摘要： A sliding surface of the sliding component is provided with a communication groove having a start point communicating with a sealed fluid side in a radial direction, a storage groove communicating with the communication groove, and a plurality of dynamic pressure generation grooves generating a dynamic pressure at end points thereof upon a run of the rotating machine and the dynamic pressure generation grooves are located on a side of the sealed fluid side space with respect to the storage groove in the radial direction.
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