专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

2. 发明申请

US20040074383A1 PILOT CONTROL VALVE UTILIZING MULTIPLE OFFSET SLIDE VALVES 有权
标题翻译：引导控制阀利用多个偏移滑阀
公开(公告)号：US20040074383A1
公开(公告)日：2004-04-22
申请号：US10274708
申请日：2002-10-21
发明人： Andrew C. Elliott , Ray A. Guccione SR.
IPC分类号： F01L025/02
CPC分类号： F04B9/125 , F01L25/06 , F01L25/063 , Y10T137/86606
摘要： A pilot control valve for controlling a reciprocating pump having a valve member shiftable within a valve body between a first or nulldownstrokenull position and a second or nullupstrokenull position. When the valve member is in its first position, the valve member positions a pair of slide valves to allow communication of control fluid to the lower surface of a piston to move the piston from a first position to a second position. As the piston reaches its second position, a poppet disposed in a rod attached to the piston allows control fluid acting on the valve member to depressurize. As such control fluid is depressurized, pressurized control fluid acts on the valve member to move the valve member from its first position to its second position. In its second position, the valve member positions the pair of slide valves to block communication of the control fluid to the lower surface of the piston and to allow communication of the control fluid to the upper surface of the piston causing the piston to return to its first position. As the piston returns to its first position, the poppet disposed in the piston rod allows the pressurized control fluid acting on the upper surface of the piston to act on the valve member to move the valve member back to its first position. In its first position, the valve member repositions the pair of slide valves to block communication of the control fluid to the upper surface of the piston and allows communication of the control fluid to the lower surface of the piston and the process is repeated.
摘要翻译：一种用于控制往复泵的先导控制阀，其具有可在阀体内在第一或“下行程”位置与第二或“上行程”位置之间移位的阀构件。当阀构件处于其第一位置时，阀构件定位一对滑阀，以允许控制流体连通到活塞的下表面，以将活塞从第一位置移动到第二位置。当活塞到达其第二位置时，设置在连接到活塞上的杆中的提升阀允许作用在阀构件上的控制流体减压。随着这种控制流体被减压，加压控制流体作用在阀构件上以将阀构件从其第一位置移动到其第二位置。在其第二位置，阀构件定位该对滑阀以阻止控制流体连接到活塞的下表面，并且允许控制流体连通到活塞的上表面，导致活塞返回到其活塞第一名当活塞返回到其第一位置时，设置在活塞杆中的提升阀允许作用在活塞的上表面上的加压控制流体作用在阀构件上，以将阀构件移回其第一位置。在其第一位置，阀构件重新定位一对滑阀，以阻止控制流体连接到活塞的上表面，并允许控制流体连通到活塞的下表面，并重复该过程。

IPRDB

热门服务

关于我们

友情链接

联系方式