-
公开(公告)号：US20230101258A1
公开(公告)日：2023-03-30
申请号：US17485678
申请日：2021-09-27
摘要： A valve includes at least one valve stem seal, such as a packing seal, that is included in a removable seal cartridge. The valve stem is connected to the actuator via a linkage, which can be removed to provide a linkage gap between the actuator and the valve stem. The seal cartridge can then be slid along the valve stem into the linkage gap and laterally removed from the valve, whereupon the seals within the seal cartridge can be refurbished. The valve can be a rotary or linear valve. In embodiments, the linkage gap can be increased by linear displacement of the actuator away from the valve stem. The seal cartridge can be re-installed in the valve after refurbishment, or a substantially identical replacement seal cartridge can be provided, and can be installed in the valve in replacement of the removed seal cartridge, thereby minimizing downtime of the valve.
-
公开(公告)号：US11543031B2
公开(公告)日：2023-01-03
申请号：US16588197
申请日：2019-09-30
申请人： Inpro/Seal LLC
IPC分类号： F16J15/44 , F16J15/18 , F16J15/54 , F16J15/447
摘要： An illustrative embodiment of a shaft seal assembly generally includes a first stator, a second stator, and a throttle member. In one illustrative embodiment, the second stator may be formed with a main body and an access plate positioned radially interior with respect to a portion of the first stator. The first stator and second stator may engage one another about a semi-spherical interface comprised of a convex surface on the second stator and a concave surface on the first stator. The second stator may include an internal channel in which a throttle member may be positioned, wherein a radially interior surface of the throttle member may be positioned a shaft.
-
公开(公告)号：US11454321B2
公开(公告)日：2022-09-27
申请号：US16400549
申请日：2019-05-01
IPC分类号： F16J15/18 , F04B53/16 , F04B1/0448
摘要： A stuffing box assembly for a fluid end of a hydraulic fluid pump includes a first stuffing box member having a first plunger bore configured to receive a plunger of the hydraulic fluid pump and a plurality of seals. The first stuffing box member further comprises a first bore spaced apart from the plunger bore. A second stuffing box member has a threaded stuffing nut bore configured to receive a stuffing nut of the hydraulic fluid pump. The second stuffing box member further comprises a second bore spaced apart from the stuffing nut bore. A fastener is configured to extend through the first and second bores to secure the first stuffing box member to the second stuffing box member.
-
公开(公告)号：US11434999B2
公开(公告)日：2022-09-06
申请号：US16858360
申请日：2020-04-24
发明人： Richard J. Gradle
摘要： Valve stem packing assemblies may include at least one end ring and at least one sealing ring. The at least one end ring may include an inner ring and an outer ring. Valves include a valve body, a valve stem, and a valve stem packing assembly.
-
公开(公告)号：US20210285547A1
公开(公告)日：2021-09-16
申请号：US17335015
申请日：2021-05-31
IPC分类号： F16J15/18
摘要： A fluid sealing system for a rotary mechanical device including a pillar lantern ring having a bottom and a top end cap with pillars or columns connecting the end caps is formed by additive manufacturing. The bottom annular end cap has an outside face and an opposed inside face defining a height therebetween and the upper annular end cap has an inside face and an opposed outside face defining a height therebetween with a plurality of integrally formed substantially cylindrical axial columns connecting the two opposed inside faces of the two end caps.
-
公开(公告)号：US20210262481A1
公开(公告)日：2021-08-26
申请号：US17260771
申请日：2019-07-19
申请人： Ebara Corporation
发明人： Tetsuji KASATANI , Shuichiro HONDA
IPC分类号： F04D29/08 , G01F23/00 , G01M3/28 , G01K13/00 , F16J15/18 , F16J15/34 , F16J15/447 , F04D29/40 , F04D27/00
摘要： The present invention relates to a sealing system for a pump configured to pressurize a volatile liquid, such as liquid ammonia. The sealing system (2) includes a stuffing box (35) forming a barrier chamber (30) and a pump-side seal chamber (43), a mechanical seal (20) arranged in the barrier chamber (30), and a barrier-gas supply system (32) for supplying a barrier gas into the barrier chamber (30). The barrier gas has a pressure higher than a pressure of the volatile liquid in the pump-side seal chamber (43). The pump-side seal chamber (43) is located between an impeller (7) of the pump (1) and the mechanical seal (20). The barrier-gas supply system (32) includes a pressure control valve (50) configured to maintain a constant difference between pressure in the barrier chamber (30) and pressure in the pump-side seal chamber (43).
-
公开(公告)号：US20200256469A1
公开(公告)日：2020-08-13
申请号：US16274313
申请日：2019-02-13
发明人： Glenn Robert Owens, JR. , Mark David Volz , Jason Crawford Ferris , Rodney Wayne Rynearson , Ryan John Kremer
IPC分类号： F16J15/44 , F16J15/18 , F16J15/28 , F16J15/3252 , F16J15/3272
摘要： A clamshell half of a split ring mechanical seal face assembly comprises a split seal ring half having circumferential and proximal surfaces that are seated against corresponding radial and axial support surfaces of a holder half. At least one extending member extends from a hole in the proximal surface to an arcuate slot in the axial support surface, or vice-versa, and thereby radially constrains the split seal ring half to remain unitized with the holder half during clamshell assembly, while permitting rotation of the split seal ring half about a shaft axis over a limited range, which in embodiments is between 2 degrees and 20 degrees. Embodiments further include a secondary seal between the holder half and split seal ring half that frictionally resists displacement of the split seal ring half.
-
公开(公告)号：US10514031B2
公开(公告)日：2019-12-24
申请号：US15820661
申请日：2017-11-22
发明人： Dante Ballario
摘要： A high hardness sleeve or surface treatment to a predetermined hardness is used in a packing bore for a fluid end of a pump assembly. The bore is either treated to provide the hardness or a sleeve is used which is fitted in an oversized bore for preventing washout failure. The sleeve is welded into the pump block and machined to the proper size bore. Thereafter the bore is protected from washout failure at this location. Alternatively, a surface of the sleeve is polished which further reduces the wear on the part. The sleeve can be a stainless steel material hardened by heat treating process or otherwise treated or carbon steel sleeves with the predetermined bore hardness which could be welded into a suitable bore in the pump. However, other processes for hardening the stainless steel can be used as long as desired predetermined surface hardness is maintainable.
-
公开(公告)号：US10428950B2
公开(公告)日：2019-10-01
申请号：US15560514
申请日：2016-03-23
发明人： Mathew Stevenson , Fabrice Guerout , Rick Boor
摘要： A packing assembly for a valve includes a first segment having at least one first guiding surface, and a second segment having at least one second guiding surface in engagement with at least a portion of the at least one first guiding surface. A shape-memory member couples the first and second segments. The shape-memory member may be formed of a material that is responsive to changes in temperature, so that, in response to a change in temperature, the shape-memory member may cause relative movement of the first and second segments in a first direction. In response to the movement, the first and second guiding surfaces may cause relative displacement of the first and second segments in a second direction.
-
公开(公告)号：US20190257429A1
公开(公告)日：2019-08-22
申请号：US16286003
申请日：2019-02-26
发明人： Jon M. LENHERT , Robert T. RACICOT , Kha V. LE
IPC分类号： F16J15/3284 , F16J15/18 , F16J15/3236 , F16J15/20 , F16J15/16 , F16J15/3212
摘要： A seal assembly includes a seal body, a spring disposed adjacent to the seal body, and a seal ring disposed adjacent to the seal body. The seal body and the seal ring can include a plastic polymer material. The seal assembly can be a subcomponent of hydraulic strut in the landing gear of an aircraft.
-
-
-
-
-
-
-
-
-
搜索结果
1352 条记录 (耗时 0.034 秒)