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公开(公告)号：US20240157407A1
公开(公告)日：2024-05-16
申请号：US17984668
申请日：2022-11-10
发明人： András Tomor , Péter Tóth , Aryoso Nirmolo , Christopher Brydon , Christopher R. Shages , Larry D. Ray, JR.
摘要： A downstream ball valve purging inlet directs purging fluid intentionally onto a downstream portion of the valve ball. The Coanda effect attaches some of the fluid to the ball's surface, so that it flows around the ball to an opposite side thereof, thereby purging the downstream valve cavity more efficiently than designs that avoid impacting the ball and depend on mixing to distribute the purging fluid onto the ball. The purging inlet can be downstream of the ball and directed at an acute angle, proximate the ball and directed perpendicular to the outlet axis, or some combination thereof. A central cavity purging drain can be connected with the purging inlet, so that the same fluid purges both the valve interior and the downstream cavity. Embodiments include a plurality of downstream purging inlets, which can have equal purging angles and can be equally spaced about the outlet axes.
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公开(公告)号：US20230097609A1
公开(公告)日：2023-03-30
申请号：US17485676
申请日：2021-09-27
摘要： A valve for controlling a molten liquid includes an expansion port in liquid communication with an internal volume of the valve that is filled with the molten liquid. An expansion valve can be opened during unfreezing of the valve, to allow melting process substance to expand out of the internal volume into an expansion line as it is melted. During initialization of the valve, an inert gas source, pressure regulator, and ultrasonic transition level sensor can be used to establish a liquid/gas interface at a desired height within the expansion line. The valve can include a multi-zone heater, wherein a first of the zones is adjacent the expansion port, so that during unfreezing, after the first zone has been melted, the remaining zones can be sequentially activated in an order that ensures that each zone is activated only after an adjacent zone has been melted.
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公开(公告)号：US11603931B2
公开(公告)日：2023-03-14
申请号：US17312510
申请日：2019-12-16
IPC分类号： F16J15/10
摘要： A high temperature secondary seal between a rotating seal face adaptor sleeve and a rotating shaft does not consume additional axial space beyond the axial space occupied by the secondary seal. The seal includes a single ring drive collar comprising a plurality of radial directed bolts in tapped holes. As the bolts are tightened they enter a cylindrical cavity in the drive collar and impact therein a sloped surface of a crush ring. The vertical force thereby applied to the crush ring displaces the crush ring axially into a secondary graphite sealing element, thereby crushing the secondary sealing element against the adaptor sleeve and shaft, and forming a seal there between. The crush ring sloped surface can terminate in a vertical face, so that upon sufficient displacement of the crush ring the bolts abut the vertical face and impact the shaft, fixing the drive collar to the shaft.
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公开(公告)号：US11466793B1
公开(公告)日：2022-10-11
申请号：US17485663
申请日：2021-09-27
IPC分类号： F16K41/10 , F16K5/04 , F16K31/126 , F16K1/38
摘要： A bellows seal valve includes a pressurization port that can be used to apply a compensating pressure to the “atmosphere” side of the bellows, i.e. the side of the bellows that is opposite to the process fluid. The atmosphere side can be on the interior or exterior of the bellows. The compensating pressure can be greater than the process fluid pressure, to ensure that any leakage will be of pressurizing fluid into the process fluid or into the environment, and that no process fluid will escape into the environment. The pressure or flow rate of the pressurizing fluid can be monitored to detect bellows and packing leaks. A pressurizing fluid exit port can be provided, so that the pressurizing fluid can be circulated through the valve, thereby moderating the bellows temperature under conditions of extreme process fluid temperature.
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公开(公告)号：US11428328B2
公开(公告)日：2022-08-30
申请号：US16321423
申请日：2017-07-27
发明人： Laren J. Winkel
摘要： A valve assembly includes a valve body having a seat-retainer chamber with a floating seat ring disposed adjacent an inner sidewall of the seat-retainer chamber. The floating seat ring is configured to contact a first portion of a plug head at a single annular location prior to a second portion of the plug head contacting a valve primary seat during a closing stroke of the plug head. A static seal is located radially between the floating seat ring and the inner sidewall of the seat-retainer chamber.
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公开(公告)号：US20220170486A1
公开(公告)日：2022-06-02
申请号：US17671283
申请日：2022-02-14
摘要： Pistons and related methods may be configured to separate fluids and to at least partially prohibit one fluid from traveling to one side of the piston from another side of the piston. Pressure exchange devices and systems may include such pistons.
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公开(公告)号：US11105345B2
公开(公告)日：2021-08-31
申请号：US17033307
申请日：2020-09-25
发明人： Scott Judge , Nathan Terwilliger , A.K. Necioglu
摘要： Devices and systems for exchanging properties between at least two fluid streams and related methods may include a valve device comprising a valve actuator configured to move at variable rates in order to selectively fill and empty at least one tank. Devices for exchanging properties between at least two fluid streams may include a valve device comprising offset openings positioned along a path of a valve actuator. The offset openings may be configured to selectively and gradually place an inlet in communication with at least one tank.
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公开(公告)号：US20210261867A1
公开(公告)日：2021-08-26
申请号：US17314596
申请日：2021-05-07
摘要： An apparatus for raising and lowering a cutting tool within a decoking drum, a decoking system and a method of raising and lowering a decoking system cutting tool. Instead of using metallic ropes, chains, or a self-propelled gear-based approach, non-metallic belts are secured at respective ends to a crosshead and one or more counterweights to enable vertical movement of the crosshead that in turn permits vertical movement of the cutting tool throughout the height of the drum. A motorized pulley system controls the movement of the belt, and preferably avoids having the motor be carried by the crosshead. The belts on each pulley are preferably arranged as cooperative sets so that within each set, both primary load belts and secondary load belts are present. Enhanced engagement between at least the primary load belts and the pulleys promotes greater load-bearing capability, while the secondary load belts are sufficiently strong to ensure positional stability of the crosshead and decoking tool upon damage to or failure of one or more of the primary load belts.
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公开(公告)号：US20210156473A1
公开(公告)日：2021-05-27
申请号：US17142351
申请日：2021-01-06
摘要： An end face mechanical seal for a high pressure, compressible fluid includes metal or ceramic seal faces separated by a seal gap having at least one supersonic region that accelerates the fluid in the leakage direction, producing a shockwave that reduces fluid pressure to significantly reduce viscous heating and gap length. A choke width of the seal gap formed between the converging and diverging segments of the first supersonic region is between 50 and 200 micro-inches, and upper and lower boundaries thereof are flat, with combined slopes of less than 10 degrees. A total length of all of the supersonic regions is less than 0.1 inches. A non-supersonic region can further reduce fluid pressure by inducing viscous stresses. The seal can be configured axially or radially, and can be used as a pre-conditioner in combination with a conventional downstream mechanical fluid seal.
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公开(公告)号：US10988999B2
公开(公告)日：2021-04-27
申请号：US16678876
申请日：2019-11-08
IPC分类号： E21B21/10 , F04C27/00 , F16K11/07 , E21B43/26 , E21B43/267 , F04F13/00 , E21B43/017 , E21B34/08 , E21B34/10
摘要： Devices for exchanging properties, such as pressure, between at least two fluid streams and related methods may include pistons coupled to a valve stem. The valve stem and valve body may be configured to define a primary seal between the one or more pistons and the valve body and a secondary seal between the one or more pistons and the valve body.
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