公开(公告)号：US4615356A

公开(公告)日：1986-10-07

申请号：US534594

申请日：1983-09-22

申请人： Raymond G. Reip

发明人： Raymond G. Reip

IPC分类号： G05D16/16 ,  F16K17/10 ,  F16K31/124 ,  G05D16/00 ,  F16K17/02

CPC分类号： F16K17/105 ,  F16K31/124 ,  Y10T137/7762 ,  Y10T137/7769

摘要： A main valve includes a product pressure inlet, an outlet, a movable closure member and a pressurized head volume above the closure member. Product pressure relief flow through the main valve is controlled by a modulating, pressure operated pilot relief valve that includes a piston chamber with a reciprocally mounted pilot piston. The chamber is in fluid communication with the pressurized head volume and with the outlet and inlet of the main valve. An inlet valve controls flow from the inlet of the main valve into the chamber and is actuated by the pilot piston. A vent valve is mounted within the piston chamber and controls fluid flow from the piston chamber to the outlet of the main valve and is actuated by the pilot piston. The pilot piston includes first and second surfaces and effective areas exposed to the pressure in the piston chamber and an end isolated from the piston chamber and in fluid communication with the main valve inlet. A field test valve is also included with an inlet for the introduction of test pressure. The test valve includes a first outlet in fluid communication with the inlet and a poppet valve mounted between the inlet and first outlet. The field test valve further includes a second outlet in fluid communication with the field test inlet and the inlet of the main valve. A shuttle valve is positioned within the test valve between the field test valve inlet and second outlet.

公开(公告)号：US4596265A

公开(公告)日：1986-06-24

申请号：US671719

申请日：1984-11-15

申请人： David J. Goodell

发明人： David J. Goodell

IPC分类号： B60T15/54 ,  F16K17/02 ,  F16K7/17

CPC分类号： F16K17/02 ,  B60T15/54 ,  Y10T137/2544 ,  Y10T137/7879

摘要： A quick release valve for a vehicle fluid pressure braking system includes a housing having inlet, exhaust and delivery ports. A bead circumscribes the inlet port to provide a valve seating area for a flexible diaphragm within the valve housing, and the exhaust port includes a projecting portion which preloads the flexible diaphragm into engagement with the bead circumscribing the inlet port. Accordingly, pressure variations between the ports cannot force the flexible diaphragm to vibrate to create an undesirable honking noise. Furthermore, the circumferentially extending bead assures a pressure-tight seal with the flexible diaphragm, and also establishes a predetermined sealing area for the diaphragm, thereby reducing valve hysteresis by preventing sealing of the diaphragm at varying areas on the housing.

摘要翻译： 用于车辆流体压力制动系统的快速释放阀包括具有入口，排气和输送口的壳体。 一个珠子限定入口端口，为阀壳体内的柔性隔膜提供一个阀座区域，而排气口包括一个突出部分，该突出部分将柔性隔膜预加载成与限定入口端口的边缘接合。 因此，端口之间的压力变化不能强制柔性隔膜振动以产生不期望的鸣叫噪声。 此外，周向延伸的胎圈确保与柔性膜片的压力密封，并且还为隔膜建立预定的密封区域，从而通过防止膜片在壳体上的不同区域的密封来减小阀门滞后。

公开(公告)号：US4266467A

公开(公告)日：1981-05-12

申请号：US951721

申请日：1978-10-16

申请人： Guenter Keller ,  Andreas Pohl ,  Gerhard Hintz

发明人： Guenter Keller ,  Andreas Pohl ,  Gerhard Hintz

IPC分类号： F16K17/02 ,  F15B11/00 ,  F16K17/04 ,  F16K17/06 ,  F15B13/042

CPC分类号： F16K17/04 ,  F16K17/06 ,  Y10T137/7779 ,  Y10T137/7904

摘要： The present differential pressure limiting valve is constructed with an axially movable valve body having hydrostatic bearings including bearing shafts, whereby the bearing shafts are connected to opposite sides of said valve body in axial alignment. Normally the valve body is biased against the valve seat by an adjustable closing spring acting on the bearing shaft or valve body opposite the valve seat to close the valve. In addition, the face end of the bearing shaft opposite the valve seat may be loaded by a pressure medium. The respective diameters of the bearings may differ. However, the effective cross-sections of the valve body are preferally equal on both sides of the valve seat. The present unidirectionally effective valves are especially suitable for use in a parallel circuit, wherein one valve is effective for pressure relief in one flow direction whereas the parallel valve is effective for pressure relief in the opposite flow direction, whereby pressure relief may be provided, for example, for both chambers of a dual acting piston drive cylinder arrangement.

摘要翻译： 本差压限制阀由具有轴承轴的静压轴承的可轴向移动的阀体构成，由此轴承轴以轴向对准的方式连接到所述阀体的相对侧。 通常，通过作用在与阀座相对的轴承轴或阀体上的可调节的关闭弹簧将阀体偏压到阀座上以关闭阀。 此外，与阀座相对的轴承轴的端面可以由压力介质加载。 各轴承的直径可能不同。 然而，阀体的有效横截面在阀座的两侧优选相等。 本单向有效的阀特别适用于并联电路，其中一个阀对于一个流动方向上的压力释放是有效的，而平行阀对于在相反的流动方向上的压力释放是有效的，由此可以提供压力释放， 例如，对于双作用活塞驱动气缸装置的两个室。

公开(公告)号：US4263935A

公开(公告)日：1981-04-28

申请号：US27603

申请日：1979-04-05

申请人： Jean Regnier

发明人： Jean Regnier

IPC分类号： F16K17/02 ,  F16K17/04

CPC分类号： F16K17/042 ,  Y10T137/7734 ,  Y10T137/7876

摘要： A valve disc is capable of moving between a closed position in which it seals-off an opening formed in an enclosure and an open position in which it is withdrawn from the opening. The valve disc is maintained in its closed position when the pressure within the enclosure is below a predetermined value by means of back-pressure exerted by a pneumatic jack. Coupling means are provided for disconnecting the jack from the valve disc in the event of a fast pressure rise within the enclosure.

摘要翻译： 阀盘能够在闭合位置之间移动，在闭合位置中，阀密封封闭形成在外壳中的开口和从开口中取出的打开位置。 当外壳内的压力通过气动千斤顶施加的背压低于预定值时，阀盘保持在其关闭位置。 提供耦合装置，用于在外壳内快速升高压力的情况下将插座与阀盘断开。

公开(公告)号：US4210174A

公开(公告)日：1980-07-01

申请号：US910741

申请日：1978-05-30

申请人： Bela Eross

发明人： Bela Eross

IPC分类号： A61M16/20 ,  F16K17/02 ,  F16K15/06

CPC分类号： F16K17/02 ,  A61M16/20 ,  Y10T137/7904 ,  Y10T137/8359

摘要： A positive pressure valve is provided having a valve member with a central magnetically attracted member spaced from and coaxial with a rod like magnet, said valve member and magnet being relatively movable to adjust the magnetic attraction between them and thus the opening pressure of the valve.

摘要翻译： 提供了一种正压阀，其具有阀构件，该阀构件具有与杆状磁体隔开并与其同轴的中心磁吸引构件，所述阀构件和磁体可相对移动以调节它们之间的磁吸引力并因此调节阀的开启压力。

公开(公告)号：US4210170A

公开(公告)日：1980-07-01

申请号：US879026

申请日：1978-02-17

申请人： ; Gary W. Sutton

发明人： ; Gary W. Sutton

IPC分类号： E02F9/22 ,  F15B13/02 ,  F16K17/02 ,  F16K17/18 ,  F16K17/196

CPC分类号： F15B13/02 ,  E02F9/226 ,  F16K17/02 ,  F16K17/18 ,  Y10T137/7775 ,  Y10T137/7776 ,  Y10T137/7777

摘要： A hydraulic system including at least one hydraulic cylinder is provided with an anti-cavitation and overload relief valve having a housing, a first chamber within the housing in fluid communication with one end of the cylinder, and a second chamber within the housing in fluid communication with a fluid reservoir. A fluid passageway within the valve housing connects the first and second chambers. A movable valve assembly is positioned within the fluid passageway for operating in a first mode to block fluid flow between the first and second chambers, for operating in a second mode to permit fluid flow from the first chamber to the second chamber only when the pressure in the first chamber exceeds the pressure in the second chamber by a first predetermined amount, and for operating in a third mode to permit fluid flow from the second chamber to the first chamber only when the pressure in the second chamber exceeds the pressure in the first chamber by a second predetermined amount. The valve includes a stationary portion positioned within the fluid passageway between the first and second chambers having a valve seat. The movable valve assembly includes a movable valve element having a sealing portion for engaging the valve seat of the stationary portion when the movable valve assembly is operating in the first and second modes. The movable valve assembly further has a valve seat and a poppet mechanism is provided for sealingly engaging the valve seat of the movable valve element when the movable valve assembly is operating in the first and third modes.

摘要翻译： 包括至少一个液压缸的液压系统设置有具有壳体的防空穴和过载安全阀，所述壳体内的第一腔室与所述气缸的一端流体连通，并且所述壳体内的第二腔室以流体连通 与流体储存器。 阀壳体内的流体通道连接第一和第二腔室。 可移动阀组件定位在流体通道内，用于以第一模式操作以阻止第一和第二腔室之间的流体流动，以在第二模式中操作，以允许流体仅在第一腔室中的压力 第一室超过第二室中的压力第一预定量，并且为了在第三模式中操作以允许流体仅在第二室中的压力超过第一室中的压力时从第二室流到第一室 第二预定量。 阀包括位于第一和第二腔室之间的流体通道内的固定部分，其具有阀座。 可移动阀组件包括可移动阀元件，当可动阀组件以第一和第二模式运行时，可动阀元件具有用于接合固定部分的阀座的密封部分。 可移动阀组件还具有阀座，并且提供提升阀机构，用于当可动阀组件在第一和第三模式下操作时，密封地接合可动阀元件的阀座。

公开(公告)号：US4131129A

公开(公告)日：1978-12-26

申请号：US785036

申请日：1977-04-06

申请人： Raymond A. Firestone

发明人： Raymond A. Firestone

IPC分类号： F17C5/06 ,  G05D16/12 ,  F16K17/02

CPC分类号： G05D16/12 ,  Y10T137/4643 ,  Y10T137/7904 ,  Y10T137/87177

摘要： Device for controlling gas flow into vessels without allowing undesired gas, such as outside air, from entering the vessel.

摘要翻译： 用于控制气体流入容器而不允许不期望的气体（例如外部空气）进入容器的装置。

公开(公告)号：US4091838A

公开(公告)日：1978-05-30

申请号：US719590

申请日：1976-08-30

申请人： George Herbert Dowty, deceased ,  by Virginia Anne Lilley, personal representative ,  by Lionel Barber, personal representative ,  by Peter James Kneale, personal representative

发明人： George Herbert Dowty, deceased ,  by Virginia Anne Lilley, personal representative ,  by Lionel Barber, personal representative ,  by Peter James Kneale, personal representative

IPC分类号： E21D15/51 ,  F16K17/02 ,  F16K17/04 ,  F16K21/04

CPC分类号： E21D15/512 ,  F16K17/02 ,  F16K17/0433 ,  F16K17/0493 ,  Y10T137/7852 ,  Y10T137/7904

摘要： A fluid pressure relief valve in which the resilient element for urging the valve closure member to its seat is a quantity of liquid trapped in a container such that movement of the closure member from its seat reduces the volume of the confined liquid elastically without substantial elastic enlargement of the container. A plunger may extend from the valve closure member into the container and may be of smaller cross-sectional area than the effective area of the closure member which is exposed to the pressure of fluid controlled by the valve. In this way liquid pressure in the container may be higher than the pressure of fluid controlled by the valve when the valve opens.

摘要翻译： 流体压力释放阀，其中用于将阀门关闭构件推动到其座椅的弹性元件是一定量的液体，其被捕获在容器中，使得闭合构件从其座部的运动可弹性地减小受限液体的体积，而没有显着的弹性扩大 的容器。 柱塞可以从阀门关闭构件延伸到容器中，并且可以具有比封闭构件的有效区域更小的横截面积，该有效区域暴露于由阀控制的流体的压力。 以这种方式，当阀打开时，容器中的液体压力可能高于由阀控制的流体的压力。

公开(公告)号：US4003398A

公开(公告)日：1977-01-18

申请号：US558957

申请日：1975-03-17

申请人： Francois Duveau

发明人： Francois Duveau

IPC分类号： F16K15/14 ,  F16K17/02 ,  F16K17/04

CPC分类号： F16K17/02 ,  F16K15/147 ,  F16K17/0446 ,  Y10T137/7771 ,  Y10T137/7838 ,  Y10T137/7881

摘要： A pressure limiting device for protecting a fluid pressure circuit involves a stack of elastomeric washers, and each of the washers has a slit through which fluid can bleed to reduce the fluid pressure below a critical value; the slits are normally closed and so prevent substantial fluid flow, but are able to open to pass fluid when the pressure reaches a critical value at which the pressure distorts the stack of washers.

摘要翻译： 用于保护流体压力回路的压力限制装置包括一堆弹性垫圈，并且每个垫圈具有狭缝，流体可以流过该狭缝，以将流体压力降低到临界值以下; 狭缝通常是关闭的，因此防止实质的流体流动，但是当压力达到压力使堆叠垫圈变形的临界值时，能够打开流体。

公开(公告)号：US3990470A

公开(公告)日：1976-11-09

申请号：US204981

申请日：1971-12-06

申请人： Jerry P. Malec

发明人： Jerry P. Malec

IPC分类号： G05D7/01 ,  G05D16/06 ,  F16K17/02

CPC分类号： G05D7/0106 ,  G05D16/0666 ,  Y10T137/261 ,  Y10T137/7821 ,  Y10T137/7826

摘要： A means for controlling fluid flow including a housing having an input port adapted to be connected to a source of fluid under pressure and also havng an output port adapted to be connected to an apparatus requiring controlled fluid flow or pressure. The housing has a ring-shaped passgeway or orifice provided therein between the input and output ports and is in communicaton therewith. A valve spool is movably mounted in the housing and has an O-ring mounted thereon which is adapted to selectively close the passageway at times when the valve spool is moved in one direction with respect to the housing. One end of a stem is secured to the valve spool and extends therefrom through a seal means provided in the housing. The housing has an adjustable spring loaded diaphragm assembly positioned therein which is operatively connected to the other end of the stem. A spring means normally urges the valve spool in said one direction with the diaphragm spring means normally urging the valve spool in an opposite direction.

摘要翻译： 一种用于控制流体流动的装置，包括具有适于连接到压力下的流体源的输入端口的壳体，并且还具有适于连接到需要受控流体流动或压力的装置的输出端口。 壳体在输入和输出端口之间具有设置在其中的环形过孔或孔，并与其通信。 阀芯可移动地安装在壳体中并且具有安装在其上的O形环，其适于在阀线圈相对于壳体沿一个方向移动时选择性地关闭通道。 杆的一端固定到阀芯并通过设置在壳体中的密封装置从其延伸。 壳体具有位于其中的可调节的弹簧加载的隔膜组件，其可操作地连接到杆的另一端。 弹簧装置通常在所述一个方向上推动阀芯，膜片弹簧装置通常沿相反的方向推动阀芯。