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1. 发明授权

US3958592A Safety shut-off valve 失效
标题翻译：安全截止阀
公开(公告)号：US3958592A
公开(公告)日：1976-05-25
申请号：US440125
申请日：1974-02-06
申请人： Richard E. Wells , Victor E. Derval , John D. Muchow
发明人： Richard E. Wells , Victor E. Derval , John D. Muchow
IPC分类号： F16K3/02 , F16K17/38 , F16K31/122 , F16K41/02 , F16K41/04 , F01B31/00 , F16K41/14
CPC分类号： F16K17/383 , F16K3/0254 , F16K31/1221 , F16K41/02 , Y10S277/933 , Y10T137/1834 , Y10T137/4238 , Y10T137/4442 , Y10T137/5109 , Y10T137/599 , Y10T137/6075
摘要： Pressurized fluid is controlled by a reverse valve gate on a valve stem that extends through annular packing in a bore of a bonnet to a piston in an outer control chamber. Control fluid pressure moves the piston inward to open the valve against line pressure on the valve and/or spring pressure on the valve. In the absence of both line pressure and control pressure, the valve is closed by spring pressure. The control chamber construction permits quick replacement of control chamber seals. In the event of a fire, the control chamber seals disintegrate to release the control pressure and thus cause line pressure and/or spring pressure to close the valve. The valve stem packing may be conveniently expelled hydraulically for replacement. Various different control assemblies may be mounted interchangeably on the valve bonnet without disturbing the structure of the valve. An auxiliary control may be quickly mounted on the outer end of the control chamber to convert the shut-off valve to manual operation.
摘要翻译：加压流体由阀杆上的反向阀门控制，该阀杆延伸穿过发动机盖的孔中的环形密封件到外部控制室中的活塞。控制流体压力将活塞向内移动以打开阀门，抵抗阀上的管路压力和/或阀门上的弹簧压力。在没有管路压力和控制压力的情况下，阀门被弹簧压力关闭。控制室结构允许快速更换控制室密封。在发生火灾时，控制室密封分解以释放控制压力，从而导致管路压力和/或弹簧压力关闭阀门。阀杆包装可以方便地液压地排出以进行更换。各种不同的控制组件可以可互换地安装在阀帽上，而不会妨碍阀的结构。辅助控制器可以快速地安装在控制室的外端上，以将截止阀转换成手动操作。

2. 发明授权

US4017053A Fluid pressure monitoring safety system 失效
标题翻译：流体压力监测安全系统
公开(公告)号：US4017053A
公开(公告)日：1977-04-12
申请号：US440165
申请日：1974-02-06
申请人： Richard E. Wells , Victor E. Derval , John D. Muchow
发明人： Richard E. Wells , Victor E. Derval , John D. Muchow
IPC分类号： G05B23/00 , F16K17/10 , F16K31/143
CPC分类号： F16K17/10 , Y10T137/0357 , Y10T137/0923 , Y10T137/7725 , Y10T137/87064 , Y10T137/87241
摘要： A shut-off valve in a fluid line closes by spring pressure and/or line pressure and incorporates a control chamber wherein pressurized control fluid acting on a piston opens the valve in opposition to the spring pressure and/or line pressure. A 3-way actuator pilot normally places the control fluid in communication with the control cylinder but when vented cuts off the control supply fluid and releases the pressurized control fluid from the control chamber to cause the shut-off valve to close by spring pressure and/or line pressure. A monitor pilot responsive to pressure changes in the fluid line incorporates a relief valve and opens the relief valve by cam action to vent the actuator pilot whenever the pressure in the fluid line makes a predetermined departure from a normal pressure range.
摘要翻译：流体管路中的截止阀通过弹簧压力和/或管线压力闭合并且包括控制室，其中作用在活塞上的加压控制流体与弹簧压力和/或管线压力相反地打开阀。三通执行器导向装置通常使控制流体与控制气缸连通，但是当通气时，切断控制供应流体并从控制室释放加压控制流体，以使截止阀通过弹簧压力和/ 或管路压力。响应于流体管路中的压力变化的监视器导向器包括安全阀，并且当流体管线中的压力预定偏离正常压力范围时，通过凸轮作用来打开安全阀以排出致动器导向器。

3. 发明授权

US4026326A Actuator pilot for fluid pressure monitoring safety system 失效
标题翻译：液压监控安全系统执行机构
公开(公告)号：US4026326A
公开(公告)日：1977-05-31
申请号：US615368
申请日：1975-09-22
申请人： Richard E. Wells , Victor E. Derval , John D. Muchow
发明人： Richard E. Wells , Victor E. Derval , John D. Muchow
IPC分类号： F16K17/10 , F16K17/00 , F15B13/01
CPC分类号： F16K17/10 , Y10T137/7725 , Y10T137/86485 , Y10T137/86582 , Y10T137/8663
摘要： A shut-off valve in a fluid line closes by spring pressure and incorporates a control chamber wherein pressurized control fluid acting on a piston opens the valve in opposition to the spring pressure. A control system for the shut-off valve comprises a 3-way actuator pilot of the present invention in cooperation with a monitor pilot. The actuator pilot has a valve spool and four ports, namely, a supply port connected to a source of pressurized control fluid, a pilot port connected to the monitor pilot, a control port connected to the control cylinder of the shut-off valve, and an exhaust port for venting the control chamber of the shut-off valve. When the control system is in service and the monitor pilot senses an undue change in the pressure in the fluid line, the monitor pilot vents the actuator pilot to shift the valve spool therein to cut off the control fluid from the control port and simultaneously to place the control port in communication with the exhaust port to cause the shut-off valve to close.
摘要翻译：流体管路中的截止阀通过弹簧压力关闭并且包括控制室，其中作用在活塞上的加压控制流体与弹簧压力相反地打开阀。用于截止阀的控制系统包括与监视器导向器相配合的本发明的三向致动器导向器。执行器导向件具有阀芯和四个端口，即连接到加压控制流体源的供应端口，连接到监视器引导件的先导端口，连接到截止阀的控制缸的控制端口，以及用于排出截止阀的控制室的排气口。当控制系统处于使用状态并且监视器导向装置检测到流体管线中的压力发生不适当的变化时，监视器导向器将致动器引导件向外移动，以使阀芯在其中移动，从控制端口切断控制流体并同时放置所述控制端口与所述排气口连通以使所述截止阀关闭。

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