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公开(公告)号：US5499648A
公开(公告)日：1996-03-19
申请号：US297802
申请日：1994-08-30
IPC分类号： F16K17/04 , F16K17/10 , F16L55/18 , F16K31/145
CPC分类号： F16K17/10 , F16K17/0453 , F16K17/105 , Y10T137/0519 , Y10T137/60
摘要： A safety relief valve (12) for a pressure vessel (10) in which the main valve member (28) includes a valve plate or disc (52) and a retainer plate (64) having a flexible membrane or diaphragm (62) stretched therebetween in a taut relation to provide a frusto-conical shape (FIG. 3) for obtaining bubble-tight sealing against valve seat (26). A fluid chamber (116) is provided between valve plate (52) and retainer plate (64) and inlet fluid pressure is communicated through opening (118) of jack screw (106) to the fluid chamber (116) for providing inlet fluid pressure thereto to force valve plate (52) and retainer plate (64) apart for tensioning of flexible membrane (62) into a frusto-conical shape. A jack screw (106) is threaded within a bushing (94) carried by retainer plate (64). Upon rotation of jack screw (106), valve plate (52) and retainer plate (64) are forced away from each other for tensioning flexible membrane (62) into a frusto-conical shape. The initial sealing of main valve member (28) is by contact of flexible membrane (62) with seat (26) and the sealing pressure increases as the inlet pressure increases due to differential pressure across the flexible membrane (62). The method of assembly includes the forcing of valve plate (52) and retainer plate (64) away from each other with manual adjusting means (106) to tension the flexible membrane (62) a predetermined amount into a frusto-conical shape.
摘要翻译： 一种用于压力容器（10）的安全释放阀（12），其中主阀构件（28）包括阀板或盘（52）和具有在其之间被拉伸的柔性膜或隔膜（62）的保持板（64） 以提供截头圆锥形状（图3），以获得气阀密封抵靠阀座（26）。 在阀板（52）和保持板（64）之间设置有流体室（116），并且入口流体压力通过顶杆螺杆（106）的开口（118）连通到流体室（116），以向其提供入口流体压力 以迫使阀板（52）和保持板（64）分开，以将柔性膜（62）张紧成截头圆锥形。 千斤顶螺钉（106）穿过由保持板（64）承载的衬套（94）内。 当千斤顶螺杆（106）旋转时，阀板（52）和保持板（64）被迫离开，以将柔性膜（62）张紧成截头圆锥形。 主阀构件（28）的初始密封是通过柔性膜（62）与阀座（26）的接触而密封压力随着入口压力由于柔性膜（62）上的压差而增加而增加。 组装方法包括使用手动调节装置（106）将阀板（52）和保持板（64）强制地彼此远离以将预定量的柔性膜（62）张紧成截头圆锥形。
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公开(公告)号：US5421360A
公开(公告)日：1995-06-06
申请号：US58422
申请日：1993-05-07
CPC分类号： F16K31/24 , B01D29/15 , Y10T137/3068 , Y10T137/7436 , Y10T137/8085
摘要： A vertically oriented float assisted automatic driptrap mechanism having a float valve chamber defined by a body section and base is disclosed. A float is located for vertical liquid level responsive movement within the float valve chamber and reciprocates within a valve stem float guide. A diffuser is provided at the inlet of the chamber to prevent impingement of incoming fluid on the float. The valve stem guide also serves as a filter support for a filter which filters out contaminants that might interfere with the valving action of the driptrap mechanism. A valve seat having a tapered seat surface and a self-positioning valve plug movably supported by the valve stem and having a differently tapered sealing surface establish line contact sealing to ensure effective valve operation under high pressure conditions.
摘要翻译： 公开了一种具有由主体部分和基部限定的浮阀室的垂直定向的浮动辅助自动滴灌机构。 浮子位于浮阀室内的垂直液面响应运动，并在阀杆浮子导向件内往复运动。 在室的入口处设置扩散器，以防止进入的流体撞击浮子。 阀杆引导件还用作过滤器的过滤器支架，其过滤掉可能干扰滴水机构的阀门作用的污染物。 具有锥形座面的阀座和由阀杆可移动地支撑并具有不同的锥形密封表面的自定位阀塞构成线接触密封，以确保在高压条件下有效的阀操作。
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公开(公告)号：US5555910A
公开(公告)日：1996-09-17
申请号：US297801
申请日：1994-08-30
IPC分类号： F16K17/10 , F16K17/12 , F16K17/196
CPC分类号： F16K17/10 , F16K17/12 , Y10T137/7762 , Y10T137/7764
摘要： A safety relief valve (10) having a main valve member (22) in a normally closed seated position has a diaphragm actuator (24) with a dome chamber (34) adjacent the outer side of the diaphragm (26). A pilot valve (28) is in fluid communication with the dome chamber (34) through a dome line (35) for controlling the opening and closing of the main valve member (22). An underdome chamber (40) on the inner side of the diaphragm (26) has an underdome line 44 extending to an underdome control valve (42) for controlling fluid communication to underdome chamber (40) from the inlet (18). An inlet line (48) extends from the inlet (18) to the underdome control valve (42). When the set pressure of the pilot valve (28) is reached, inlet fluid pressure on the inner side of the diaphragm (26) increases while dome pressure in the dome chamber (34) decreases. Simultaneously, an increase in fluid inlet pressure at inlet (18) actuates underdome control valve (42) to provide direct fluid communication between inlet (18) and underdome chamber (40) to boost the opening of main valve member (22). One embodiment of the invention shown in FIGS. 6 and 7 utilizes a non-pilot operated relief valve member (10C) in which a weight (29C) urges the main valve member (22C) into closed position. An underdome control valve (42C) includes a weight (65C) urging the underdome control valve member (67C) into a seated position.
摘要翻译： 具有处于常闭就座位置的主阀构件（22）的安全释放阀（10）具有隔膜致动器（24），其具有与隔膜（26）的外侧相邻的圆顶室（34）。 先导阀（28）通过用于控制主阀构件（22）的打开和关闭的圆顶管（35）与圆顶室（34）流体连通。 在隔膜（26）的内侧上的下腔室（40）具有延伸到下部控制阀（42）的下圆管线44，用于控制从入口（18）流体连通至下腔室（40）。 入口管线（48）从入口（18）延伸到下部控制阀（42）。 当达到先导阀（28）的设定压力时，隔膜（26）的内侧上的入口流体压力增加，而圆顶室（34）中的圆顶压力降低。 同时，入口（18）处的流体入口压力的增加致动下部控制阀（42），以在入口（18）和下部室（40）之间提供直接的流体连通，以增加主阀构件（22）的开口。 图1和图2所示的本发明的一个实施例。 图6和图7使用非导向操作的安全阀构件（10C），其中重物（29C）将主阀构件（22C）推动到关闭位置。 下部控制阀（42C）包括将下部控制阀构件（67C）推动到就座位置的重物（65C）。
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公开(公告)号：US5238021A
公开(公告)日：1993-08-24
申请号：US2136
申请日：1993-01-11
IPC分类号： G05D16/06
CPC分类号： G05D16/0658 , Y10T137/7801 , Y10T137/7805
摘要： A diaphragm controlled spring loaded regulator is disclosed. Such regulator is adapted to regulate the flow of compressed gas applied to a gas blanket on top of liquids in a storage tank and to other low pressure applications. The regulator includes a piston in a valve body with an "O" ring seat contacting an annular seating surface of the valve body. A compression spring is located on one end of the piston and a diaphragm actuator responsive to remote tank pressure is provided on the other end of the piston. At closure, the piston is pressure balanced. One arrangement is provided with a rollout seal in combination with an upper piston part and tapered cylinder walls such that after the piston begins to open, increased opening force is created due to inlet pressure acting on the upper piston part. As the piston begins to close, increased closing force is created due to inlet pressure. Another arrangement is provided such that with cracking of the "O" ring seat with the annular seating surface, pressure is adjustably increased in the lower part of the valve so as to act against a lower part of the piston so as to increase opening force.
摘要翻译： 公开了一种隔膜控制弹簧加载调节器。 这种调节器适于调节施加到储存罐中液体顶部的气体覆盖层的压缩气体的流量和其它低压应用。 调节器包括在阀体中的活塞，其具有接触阀体的环形安置表面的“O”形环座。 压缩弹簧位于活塞的一端，响应于远程罐压力的隔膜致动器设置在活塞的另一端。 在关闭时，活塞压力平衡。 一个布置具有与上活塞部分和锥形圆筒壁结合的卷起密封件，使得在活塞开始打开之后，由于作用在上活塞部件上的入口压力而产生增加的打开力。 当活塞开始关闭时，由于入口压力产生增加的关闭力。 提供另一种布置，使得随着具有环形座表面的“O”形环座的开裂，在阀的下部可调节地增加压力，以便作用在活塞的下部，从而增加打开力。
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