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公开(公告)号：US5487550A
公开(公告)日：1996-01-30
申请号：US67487
申请日：1993-05-26
申请人： Richard F. Salant , Itzhak Green , Larry A. Hufford , Oley Giles
发明人： Richard F. Salant , Itzhak Green , Larry A. Hufford , Oley Giles
CPC分类号： F16J15/3432 , F16J15/008 , Y10S277/914 , Y10S277/929
摘要： A secondary mechanical seal assembly is used on a shaft that is rotatable within a housing to seal both gaseous and liquid medium. The assembly includes a stationary seal face element that is fixed relative to the housing and a rotating seal face element that is fixed relative to the shaft. One of the seal face element back surfaces includes at least one slot configured to produce a wave on the front surface of the seal face element when the shaft is rotated. The wave creates an opening force that is sufficient to control wear and prolong seal life when the secondary seal assembly is exposed to a gaseous medium. When exposed to a pressurized liquid medium, the hydrodynamic loading from the liquid medium alters the seal face element waviness, and increases the closing force due to the action of the pressurized liquid on the back surface of the seal face elements, such that excessive leakage is prevented.
摘要翻译： 第二机械密封组件用于可在壳体内旋转以密封气体和液体介质的轴上。 组件包括相对于壳体固定的固定密封面元件和相对于轴固定的旋转密封面元件。 密封面元件后表面中的一个包括至少一个槽，其构造成当轴旋转时在密封面元件的前表面上产生波。 当二次密封组件暴露于气体介质时，该波形产生足以控制磨损并延长密封寿命的打开力。 当暴露于加压液体介质时，来自液体介质的流体动力学负载改变了密封面元件的波纹度，并且由于加压液体在密封面元件的背面上的作用而增加了闭合力，使得过度的泄漏 防止了
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2.发明授权Self-hydraulic pressure generating and maintaining device for shaft-seal mechanism 失效用于轴封机构的自液压压力发生和维护装置
公开(公告)号：US4431199A
公开(公告)日：1984-02-14
申请号：US447001
申请日：1982-12-02
申请人： Tomoichiro Iwane
发明人： Tomoichiro Iwane
CPC分类号： F16J15/406 , F16J15/006 , Y10S277/928 , Y10S277/929
摘要： A pressurizing device for a pump seal includes a cylindrical chamber fitted over an extension of a pump shaft external of the seal with a sliding piston inside the chamber being mounted for reciprocation relative to the external shaft portion in dividing the space in the cylinder into high pressure and low pressure chambers with the high pressure chamber communicating with the seal. A screw pump consisting of a pumping thread on the shaft is positioned in a bore axially extending through the piston with rotation of the shaft effecting pumping through a check valve to the high pressure chamber from the low pressure chamber so as to cause the piston to move toward the low pressure chamber and compress a compression spring mounted in the low pressure chamber. The compression spring urges the piston toward the high pressure chamber so as to always maintain high pressure in the high pressure chamber after the pump operation and consequent rotation of the shaft is terminated. Pressure relief valve means vents the high pressure chamber to the low pressure chamber when pressures reach a predetermined value in the high pressure chamber.
摘要翻译： 一种用于泵密封件的加压装置包括一个圆筒形腔体，该圆柱形腔室装配在密封件外侧的泵轴的延伸部上，该腔室内的滑动活塞被安装用于相对于外部轴部的往复运动，将气缸中的空间分成高压 以及具有与密封件连通的高压室的低压室。 由轴上的泵送螺纹组成的螺杆泵定位在轴向延伸穿过活塞的孔中，轴的旋转使得轴从低压室通过止回阀泵送到高压室，从而使活塞移动 朝向低压室并压缩安装在低压室中的压缩弹簧。 压缩弹簧将活塞推向高压室，以便在泵操作之后始终保持高压室中的高压，并且随后的轴的旋转终止。 当压力达到高压室中的预定值时，泄压阀意味着将高压室排放到低压室。
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公开(公告)号：US4415165A
公开(公告)日：1983-11-15
申请号：US446294
申请日：1982-12-02
申请人： Leonard J. Martini
发明人： Leonard J. Martini
CPC分类号： F16J15/008 , F16J15/3448 , Y10S277/91 , Y10S277/929
摘要： A shaft seal is presented which combines the attributes of the low pressureealing of an O-ring and the high pressure sealing of a carbon face seal. This invention provides a dynamic shaft seal with the advantage of a very reliable, positive elastomeric O-ring seal for low pressure sealing and the advantage of a reliable graphite face seal for high pressure sealing incorporated into an integral configuration. This integral configuration allows a smooth transition between the low pressure O-ring seal and the high pressure carbon face seal without leakage. Springs are designed to provide the correct preload compression on the dynamic O-ring seal and the forces required such that the transition operation occurs at the proper differential pressure.Mechanically, a rotating shaft within an aperture in a pressure housing wall is fitted with a sleeve containing a carbon face seal that mates against the face of an elastomeric/graphite-interface seal. The carbon face seal components are keyed to rotate with the shaft while the elastomeric/graphite-interface seal is keyed to the aperture and remains fixed in place during the shaft's rotation. The elastomeric/graphite-interface seal also houses an O-ring which provides a dynamic seal for the shaft at low pressure. Actuation of either the high pressure face type seal or the low pressure O-ring seal is adjustably controlled by compression springs in the mechanism.
摘要翻译： 提出了一种轴密封件，其结合了O形圈的低压密封的特性和碳表面密封件的高压密封。 本发明提供一种动态轴封，具有用于低压密封的非常可靠的正弹性O形密封件的优点，以及结合到整体构造中的用于高压密封的可靠的石墨面密封件的优点。 这种整体结构允许低压O形圈密封和高压碳面密封之间的平滑过渡而不泄漏。 弹簧设计用于在动态O形圈密封件上提供正确的预载压缩和所需的力，使过渡操作在合适的压差下发生。 在机械上，压力容纳壁内的孔内的旋转轴装有一个套筒，该套筒包含与弹性体/石墨界面密封件的表面配合的碳面密封件。 碳面密封部件被键入以与轴一起旋转，而弹性体/石墨界面密封件被锁定到孔并且在轴旋转期间保持固定就位。 弹性体/石墨界面密封件还容纳O形环，其在低压下为轴提供动态密封。 高压面型密封件或低压O型圈密封件的致动可以通过机构中的压缩弹簧来调节。
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4.发明授权
公开(公告)号：US4139203A
公开(公告)日：1979-02-13
申请号：US790787
申请日：1977-04-25
申请人： Stephen N. Garrison
发明人： Stephen N. Garrison
CPC分类号： F16C33/80 , F16C13/022 , F16J15/164 , F16J15/4474 , Y10S277/907 , Y10S277/929
摘要： The invention is an improved rotary seal which is particularly well suited for protecting the bearing area in a conveyor idler roll. The seal has inner and outer annular members which normally rotate freely without contact relative to each other. The members have cooperative means to form a labyrinth effective to restrict the ingress of contaminant or the egress of lubricant to or from the bearing area. One of the members further includes an attached annular disc of resilient flexible material. When the lubricant pressure in the bearing area increases, such as when the bearing is being regreased, it forces the free edge of the disc into contact with the other member to form a barrier against the leakage of lubrication. When the lubricant pressure normalizes, the resilient disc recovers to its normal, noncontact position.
摘要翻译： 本发明是一种改进的旋转密封件，其特别适用于保护输送机惰轮中的轴承区域。 密封件具有通常自由旋转而没有彼此接触的内部和外部环形构件。 这些成员有合作的手段来形成迷宫，有效地限制了污染物的进入或润滑剂从轴承区域流出。 其中一个构件还包括附接的弹性柔性材料环形盘。 当轴承区域中的润滑剂压力增加时，例如当轴承被再润滑时，其迫使盘的自由边缘与另一个构件接触以形成防止润滑泄漏的屏障。 当润滑剂压力正常化时，弹性盘恢复到正常的非接触位置。
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公开(公告)号：US4067583A
公开(公告)日：1978-01-10
申请号：US752891
申请日：1976-12-21
CPC分类号： F04D29/143 , Y10S277/929
摘要： The device comprises a driving mechanism, disconnectable coupling means, aotor in which is conveyed a toxic gas, and an annular seal clamped between stationary knife-edges on the rotor and movable knife-edges associated with a movable annular support unit. A closure control element consisting of an annular jack causes the annular support unit to move between an inactive position and an active position and conversely. A second control element consisting of a resilient washer applies a complementary force to the annular support unit under the action of withdrawal of the driving mechanism.
摘要翻译： 该装置包括驱动机构，可分离的联接装置，传送有毒气体的转子和夹在转子上的固定刀刃之间的环形密封件和与可移动环形支撑单元相关联的可移动刀刃。 由环形千斤顶组成的关闭控制元件使得环形支撑单元在非活动位置和活动位置之间移动，相反地。 由弹性垫圈构成的第二控制元件在驱动机构的退出作用下向环形支撑单元施加互补的力。
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公开(公告)号：US4058320A
公开(公告)日：1977-11-15
申请号：US708815
申请日：1976-07-26
CPC分类号： F16J15/441 , F16J15/40 , Y10S277/927 , Y10S277/929
摘要： A system supplying oil to the seal plates of a generator. Seal oil is provided by a primary pump and a secondary pump which acts as a backup for the primary pump. Under normal operating conditions a portion of the seal oil supplied by either pump is diverted through a bypass line so that only a predetermined amount of oil actually flows to the seal plates. When the flow rate through the bypass line falls below a specific amount, the secondary pump is activated. If, at any time, the oil pressure supplied to the seal plates falls below a predetermined amount, then a hydraulic accumulator maintains the necessary pressure and flow rate for a relatively short period of time required to bring the backup pump to its proper pressure and flow rate.
摘要翻译： 一种向发生器的密封板供油的系统。 密封油由主泵和辅助泵提供，其作为主泵的备用。 在正常操作条件下，由任一个泵供应的密封油的一部分通过旁路管路转向，使得只有预定量的油实际上流到密封板。 当通过旁路管路的流量降低到特定量以下时，二次泵被激活。 如果在任何时候，提供给密封板的油压低于预定量，则液压蓄能器在必要的相对短的时间段内保持必要的压力和流量，以使备用泵达到适当的压力和流量 率。
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公开(公告)号：US3951419A
公开(公告)日：1976-04-20
申请号：US586141
申请日：1975-06-11
IPC分类号： F16J15/40
CPC分类号： F16J15/40 , Y10S277/904 , Y10S277/926 , Y10S277/929
摘要： A seal assembly situated between two relatively rotatable members and axially separating a space of higher pressure from a space of lower pressure, the seal assembly including a fluid reservoir and a seal exposed to said high pressure and axially slidable to urge fluid from the reservoir into a sealing space when leakage occurs therefrom.
摘要翻译： 一种密封组件，其位于两个相对旋转的构件之间，并且将较高压力的空间与较低压力的空间轴向分离，所述密封组件包括暴露于所述高压并可轴向滑动以将流体从储存器推入 当发生泄漏时密封空间。
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公开(公告)号：US3796527A
公开(公告)日：1974-03-12
申请号：US3796527D
申请日：1973-03-30
申请人： CURTISS WRIGHT CORP
CPC分类号： F01C19/02 , Y10S277/929
摘要： In a rotary mechanism of the Wankel type, a sealing device for each of the apex portions of the rotor which sealing device comprises a seal blade disposed for reciprocation toward and away from the trochoidal surface of the mechanism housing and a pressurized fluid actuating means responsive to the angular velocity of the rotor and coacting with the seal blade to hold the latter out of engagement with the trochoidal surface at a predetermined rotor angular velocity.
摘要翻译： 在汪克尔类型的旋转机构中，用于转子的每个顶点部分的密封装置，该密封装置包括设置成朝向和远离机构壳体的摆线表面往复运动的密封叶片，以及响应于 转子的角速度并与密封叶片共同作用，以保持它们以预定的转子角速度与摆线表面脱离接合。
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公开(公告)号：US3735990A
公开(公告)日：1973-05-29
申请号：US3735990D
申请日：1971-06-25
申请人： BOSCH GMBH ROBERT
发明人： STEEGMULLER H
CPC分类号： F16J15/54 , G21F7/005 , Y10S277/904 , Y10S277/929
摘要： A sealing structure for a system which rotates a driven coupling member in a contaminated compartment has a sleeve which extends into an opening of a wall of the cell defining the contaminated compartment and has an internal annular shoulder sealingly engaging an external shoulder of the driven coupling member in the compartment. The driven coupling member has an axial bore which is sealed from the contaminated compartment and can receive a torque-transmitting part of a second coupling member which is located without the compartment and is driven by a motor through the intermediary of a clutch. The sleeve is in sealing engagement with the wall, and the likelihood of leakage between the sleeve and the driven coupling member is further reduced by the provision of one or more packings, U-rings and/or liquid seals. The two shoulders bear against each other to prevent leakage of contaminating matter from the compartment when the second coupling is detached. The opening in the wall is evacuated prior to detechment of the second coupling member and remains evacuated until after attachment of a fresh second coupling member.
摘要翻译： 用于使受污染隔间中的从动联接构件旋转的系统的密封结构具有延伸到限定污染隔室的单元的壁的开口中的套筒，并且具有密封地接合从动联接构件的外肩部的内部环形肩部 在隔间。 从动联接构件具有轴向孔，所述轴向孔与被污染的隔室密封并且可以容纳第二联接构件的扭矩传递部分，该第二联接构件位于没有隔室的位置，并且由电动机通过离合器驱动。 套筒与壁密封接合，并且通过设置一个或多个密封件，U形环和/或液体密封件，进一步减小了套筒和从动联接构件之间泄漏的可能性。 两个肩膀相互抵靠，以防止第二个联轴器脱离时污染物质从隔间泄漏。 在第二联接构件被拆除之前，将壁中的开口抽真空并保持抽空，直到附接新的第二联接构件。
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公开(公告)号：US3689082A
公开(公告)日：1972-09-05
申请号：US3689082D
申请日：1970-02-03
CPC分类号： F16L17/10 , F16J15/46 , Y10S277/927 , Y10S277/929
摘要： There is provided an inflatable peripheral seal which is characterized by a closed loop gas-impervious body of an elastomeric material formed from an extruded section and joined at its ends and having oppositely disposed inner and outer peripheral sealing surfaces. The loop contains at least one interiorly disposed continuous chamber defined in part by a flexible wall which is movable between a first position and a second position in response to fluid pressure. The wall is stable in the first position when the pressure differential across the wall is below a predetermined value. The joint between the ends of the extruded section is free of tensile stresses both when the seal is inflated and deflated. Further, the joint can be made after the seal is positioned around a shaft so that the seal can be installed without moving the seal over the ends of such shaft.
摘要翻译： 提供了一种可膨胀的周边密封件，其特征在于由挤压部分形成并且在其端部连接且具有相对设置的内周和外周密封表面的弹性体材料的闭环不透气体。 环路包括至少一个内部设置的连续室，其部分由柔性壁限定，该柔性壁可响应于流体压力在第一位置和第二位置之间移动。 当跨越墙壁的压差低于预定值时，墙壁在第一位置是稳定的。 当密封件充气和放气时，挤出部分的端部之间的接头都没有拉伸应力。 此外，在密封件围绕轴定位之后可以进行接合，使得可以在不将密封件移动到该轴的端部上的情况下安装密封件。
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