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公开(公告)号：US4219042A
公开(公告)日：1980-08-26
申请号：US945147
申请日：1978-09-22
IPC分类号： F15B5/00
CPC分类号： F15B5/00 , Y10T137/2409
摘要： A pneumatic relay, and more particularly a pneumatic reversing relay, wherein the output decreases with increasing signal pressure. The relay is of the rolling diaphragm type, each rolling diaphragm including a radially outer clamping flange, a radially inner clamping flange and an intermediate rolling wall. Means are provided for securing clamping flanges of the rolling diaphragms against pull-out, creep and relaxation of clamping forces. The valve has a freely floating valve stem having a high degree of pneumatic stability combined with low stem friction. The freely floating operation is obtained by means of an "O" ring surrounding the valve stem and a baffle plate deforming the "O" ring. The relay includes a bias spring whose bias is controlled by the deformation of a metal bonnet housing the bias spring. Spring retainer caps transmit the deformation of the bias spring in a precise and stable manner. The supply pressure port is connected to a pressure control chamber by a fluid passage including a valve element and a valve seat, the valve stem being surrounded by a helical compression spring positioned to obtain normally closed valve operation. The supply fluid flows past the movable valve element, the fixed supply seal, and along the stem and is then deviated to the pressure control chamber. The stem has a portion of increased diameter which cooperates as valve element with the seat of the exhaust valve. The seat of the supply valve is impact resistant and is affixed to the relay body without use of threads, or like fastener means subject to change of adjustment. The various components of the device are held together by a clamp ring having an opening or window for the admission of signal pressure. Anti-rotation pins are used to prevent relative rotary movement of the parts held together by the clamp ring.
摘要翻译： 一种气动继电器，特别是一种气动反向继电器，其中输出随信号压力的增加而减小。 继电器是滚动隔膜型，每个滚动隔膜包括径向外部夹紧凸缘，径向内部夹紧凸缘和中间滚动壁。 提供了用于固定滚动隔膜的夹紧凸缘以防止夹紧力的拉出，蠕变和松弛的装置。 该阀具有自由浮动的阀杆，具有高度的气动稳定性以及低的阀杆摩擦力。 通过围绕阀杆的“O”环和使“O”形环变形的挡板获得自由浮动操作。 继电器包括偏置弹簧，其偏压由容纳偏置弹簧的金属盖的变形控制。 弹簧保持帽以精确和稳定的方式传递偏置弹簧的变形。 供应压力端口通过包括阀元件和阀座的流体通道连接到压力控制室，阀杆被定位成获得常闭阀操作的螺旋压缩弹簧包围。 供应流体流过可移动阀元件，固定供应密封件，并沿着阀杆，然后偏移到压力控制室。 阀杆具有直径增大的一部分，其作为阀元件与排气阀的阀座配合。 供应阀的座椅是抗冲击的，并且固定到继电器主体上，而不使用螺纹，或者类似的紧固件装置经受调节的改变。 装置的各种部件通过具有用于承认信号压力的开口或窗口的夹紧环保持在一起。 防旋转销用于防止由夹紧环保持在一起的部件的相对旋转运动。
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公开(公告)号：US4263838A
公开(公告)日：1981-04-28
申请号：US923594
申请日：1978-07-11
IPC分类号： F15B13/16
CPC分类号： F15B13/16 , Y10T137/2409
摘要： A force balance instrument providing precision control of pneumatic actuators in response to command pressure signals independent of external forces on the actuator shaft. The instrument includes a high gain signal detection circuit in combination with one or two pilot operated output valves. In the case of two output valves inverse "push-pull" control of a double acting pneumatic actuator is provided. Full supply pressure differential can be developed across the piston of the actuator, permitting to minimize the size of the actuator for any specified output force.The positioner proper controls the position of valve actuator system through a stem connector arm and a feed-back spring. A force balance condition is initially established between the feedback spring and the force of a rolling diaphragm controlled piston assembly for the range of signal pressure P.sub.1 to be used. Any change in this force balance condition because of a change in signal pressure P.sub.1 produces a change in clearance between the above referred-to rolling diaphragm controlled piston assembly and a pilot nozzle. Air under pressure is fed from a chamber which may be referred-to as output chamber through a passageway having a restriction to a chamber which will be referred-to as a servo chamber. The servo chamber is vented through the orifice of the aforementioned nozzle and affixed to the aforementioned movable nozzle support which is, in effect, a rolling diaphragm controlled piston assembly. The above nozzle controls the exhaust rate of the serve chamber.In double acting positioners a reversing valve is connected to the positioner proper.
摘要翻译： 力平衡仪提供气动致动器的精确控制，以响应指令压力信号，独立于致动器轴上的外力。 该仪器包括一个高增益信号检测电路与一个或两个先导操作输出阀的组合。 在两个输出阀的情况下，提供了双作用气动致动器的“推挽”控制。 可以在致动器的活塞两端产生全供应压力差，允许致动器在任何指定的输出力下的尺寸最小化。 定位器通过杆连接臂和反馈弹簧适当地控制阀致动器系统的位置。 最初在反馈弹簧和滚动隔膜控制的活塞组件的力之间建立力平衡条件以用于要使用的信号压力P1的范围。 由于信号压力P1的变化，该力平衡状态的任何变化产生上述被称为滚动隔膜控制的活塞组件和导向喷嘴之间的间隙的变化。 在压力下的空气从可以被称为输出室的室通过具有限制的通道被输送到将被称为伺服室的室。 伺服室通过上述喷嘴的孔排出并固定到上述可移动喷嘴支撑件上，该活动喷嘴支撑件实际上是滚动隔膜控制的活塞组件。 上述喷嘴控制服务室的排气速度。 在双作用定位器中，换向阀连接到定位器本体。
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公开(公告)号：US4244589A
公开(公告)日：1981-01-13
申请号：US90367
申请日：1979-11-01
摘要： A shaft sealing precluding fluid from moving in a direction longitudinally of the shaft. At the same time the shaft sealing allows a motion of the shaft in axial direction, an inclination of the shaft, and may also allow a rotary motion of the shaft relative to its sealing means. The sealing means is a rolling diaphragm including a clamping flange on one end of the rolling wall thereof. There is a difference of pressure to either side of the rolling wall of the diaphragm. Its shaft has a predetermined outer diameter, and its radially inward directed bottom has a central bore therein equal to the predetermined outer diameter of the shaft. A tubular member having an inner diameter equal to the outer diameter of the shaft is mounted on the shaft. That tubular member has an outer diameter of such thickness as to engage a length of the rolling wall of the rolling diaphragm. The aforementioned tubular member has an end surface in permanent engagement with the bottom of the rolling diaphragm with a cylindrical elastomeric member having a projection conforming substantially with the shape of a portion of reduced diameter of the shaft and engaging under pressure said portion of reduced diameter.
摘要翻译： 轴密封排除流体沿轴的纵向移动。 同时，轴密封允许轴在轴向上的运动，轴的倾斜，并且还可以允许轴相对于其密封装置的旋转运动。 密封装置是在其滚动壁的一端上包括夹紧凸缘的滚动隔膜。 与隔膜的滚动壁的任一侧有压力差。 其轴具有预定的外径，并且其径向向内指向的底部具有等于轴的预定外径的中心孔。 具有等于轴的外径的内径的管状构件安装在轴上。 该管状构件具有与滚动隔膜的滚动壁的长度接合的厚度的外径。 上述管状构件具有与滚动隔膜的底部永久接合的端面，其具有圆柱形弹性体构件，该圆柱形弹性体构件具有基本上与轴的直径减小的部分的形状相符合的突出部，并在压力下接合减小直径的部分。
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公开(公告)号：US4229010A
公开(公告)日：1980-10-21
申请号：US971615
申请日：1978-12-20
IPC分类号： F16J15/52
CPC分类号： F16J15/52 , Y10S277/91
摘要： A self-aligning seal for minimizing, or entirely suppressing, the flow of a fluid in a direction generally longitudinally of a shaft subjected to axial motions and to tilting motions in any direction. The seal comprises a shaft, a bushing surrounding said shaft, a convoluted diaphragm having radially inner support means affixed to said bushing and radially outer support means affixed to a fixed structure. The bushing has abutment means limiting the relative movement of bushing and shaft. The bushing has preferably externally the shape of a frustum of a cone which facilitates connecting the radially inner end of the convoluted diaphragm to the bushing. The bushing may also be provided with elastomeric sealing means such as an "O" ring precluding the flow of fluid through the narrow gap formed between the shaft and the shaft-receiving bore of the bushing.
摘要翻译： 一种自动对准密封件，用于使流体沿着轴向运动的轴的大致纵向的方向最小化或完全抑制流体，并且在任何方向上倾斜运动。 密封件包括轴，围绕所述轴的衬套，具有固定到所述衬套的径向内部支撑装置和附接到固定结构的径向外部支撑装置的旋转隔膜。 衬套具有限制衬套和轴的相对运动的邻接装置。 衬套优选地在外部具有锥形截头锥体的形状，其有利于将回旋膜片的径向内端连接到衬套。 衬套还可以设置有弹性体密封装置，例如“O”形环，其阻止流体流过形成在轴和衬套的轴接收孔之间的窄间隙。
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公开(公告)号：US4208060A
公开(公告)日：1980-06-17
申请号：US3163
申请日：1979-01-15
CPC分类号： F16J15/52
摘要： A shaft sealing precluding fluid from moving in a direction longitudinally of the shaft. At the same time the shaft sealing allows a motion of the shaft in axial direction, an inclination of the shaft, and may also allow a rotary motion of the shaft relative to its sealing means. The sealing means is a rolling diaphragm including a clamping flange on one end of the rolling wall thereof. The other end of the rolling diaphragm is provided with a cylindrical elastomeric member having a projection conforming substantially with the shape of a portion of reduced diameter of the shaft and engaging under pressure said portion of reduced diameter.
摘要翻译： 轴密封排除流体沿轴的纵向移动。 同时，轴密封允许轴在轴向上的运动，轴的倾斜，并且还可以允许轴相对于其密封装置的旋转运动。 密封装置是在其滚动壁的一端上包括夹紧凸缘的滚动隔膜。 滚动隔膜的另一端设置有圆柱形弹性体构件，其具有基本上与轴的直径减小的部分的形状一致的突起，并且在压力下接合减小直径的部分。
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公开(公告)号：US4466455A
公开(公告)日：1984-08-21
申请号：US442704
申请日：1982-11-18
IPC分类号： F16K7/18 , F16K31/126 , F16K51/02 , F16K7/02
CPC分类号： F16K31/126 , F16K51/02 , F16K7/18 , Y10S251/901 , Y10T137/261 , Y10T137/86799
摘要： A vacuum controller for maintaining a defined vacuum pressure to a remote location, including a housing which defines a cavity. The controller includes means for connecting the cavity to the remote location, to a high vacuum, and to a control signal pressure. There is a cup-shaped plunger, having an opening in its side wall, which is adapted to reciprocate in the cavity, and there is a flexible diaphragm which seals between the housing and the plunger. The diaphragm also operates as a valving mechanism, such that, when the plunger moves in one direction, the diaphragm closes off the opening in the side wall of the plunger, and when the plunger moves in the other direction, it opens the opening. There is a check valve in said controller to prevent inversion of the diaphragms.
摘要翻译： 真空控制器，用于将限定的真空压力保持在远程位置，包括限定空腔的壳体。 控制器包括用于将空腔连接到远程位置，高真空和控制信号压力的装置。 有一个杯形柱塞，其侧壁上有一个开口，该开口适于在空腔中往复运动，并且有一个柔性的隔膜，它密封在壳体和柱塞之间。 隔膜也作为阀机构工作，使得当柱塞沿一个方向移动时，隔膜封闭柱塞的侧壁中的开口，并且当柱塞沿另一方向移动时，其打开开口。 所述控制器中有止回阀以防止隔膜反转。
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公开(公告)号：US4253675A
公开(公告)日：1981-03-03
申请号：US90366
申请日：1979-11-01
摘要： A shaft sealing precluding fluid from moving in a direction longitudinally of the shaft. At the same time the shaft sealing allows a motion of the shaft in axial direction, an inclination of the shaft, and may also allow a rotary motion of the shaft relative to its sealing means. The sealing means is a rolling diaphragm including a clamping flange on one end of the rolling wall thereof. The other end of the rolling diaphragm is provided with a cylindrical elastomeric member having a projection conforming substantially with the shape of a portion of reduced diameter of the shaft and engaging under pressure said portion of reduced diameter. The rolling diaphragm includes an elastomeric ply and a fabric reinforcement of the ply. The fabric reinforcement is removed from a region of the aforementioned projection of said rolling diaphragm to provide an interface between said portion of reduced diameter of, or cavity in, said shaft and said projection where the radially inward pressure of said projection is not limited by the presence of said fabric reinforcement.
摘要翻译： 轴密封排除流体沿轴的纵向移动。 同时，轴密封允许轴在轴向上的运动，轴的倾斜，并且还可以允许轴相对于其密封装置的旋转运动。 密封装置是在其滚动壁的一端上包括夹紧凸缘的滚动隔膜。 滚动隔膜的另一端设置有圆柱形弹性体构件，其具有基本上与轴的直径减小的部分的形状一致的突起，并且在压力下接合减小直径的部分。 滚动隔膜包括层的弹性层和织物加强层。 所述织物加强件从所述滚动隔膜的上述突起的区域中移除，以在所述轴的所述部分之间或所述突起的凹腔部分之间形成界面，其中所述突起的径向向内的压力不受 所述织物加强件的存在。
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公开(公告)号：US4390036A
公开(公告)日：1983-06-28
申请号：US251470
申请日：1981-04-06
CPC分类号： F16K31/126 , F16K51/02 , F16K7/18 , Y10S251/901 , Y10T137/261 , Y10T137/86799
摘要： A vacuum controller for maintaining a defined vacuum pressure to a remote location, including a housing which defines a cavity. The controller includes means for connecting the cavity to the remote location, to a high vacuum, and to a control signal pressure. There is a cup-shaped plunger, having an opening in its side wall, which is adapted to reciprocate in the cavity, and there is a flexible diaphragm which seals between the housing and the plunger. The diaphragm also operates as a valving mechanism, such that, when the plunger moves in one direction, the diaphragm closes off the opening in the side wall of the plunger, and when the plunger moves in the other direction, it opens the opening.
摘要翻译： 真空控制器，用于将限定的真空压力保持在远程位置，包括限定空腔的壳体。 控制器包括用于将空腔连接到远程位置，高真空和控制信号压力的装置。 有一个杯形柱塞，其侧壁上有一个开口，该开口适于在空腔中往复运动，并且有一个柔性的隔膜，它密封在壳体和柱塞之间。 隔膜也作为阀机构工作，使得当柱塞沿一个方向移动时，隔膜封闭柱塞的侧壁中的开口，并且当柱塞沿另一方向移动时，其打开开口。
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