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. 发明授权

US4355784A Method and apparatus for controlling back pressure 失效
标题翻译：用于控制背压的方法和装置
公开(公告)号：US4355784A
公开(公告)日：1982-10-26
申请号：US174826
申请日：1980-08-04
申请人： Lester L. Cain
发明人： Lester L. Cain
IPC分类号： E21B21/10 , E21B34/02 , F16K47/04 , F16K31/122
CPC分类号： F16K47/04 , E21B21/106 , E21B34/02 , Y10S137/906 , Y10T137/6164 , Y10T137/6171 , Y10T137/6181 , Y10T137/7835
摘要： A back pressure control choke operates to automatically control and maintain a desired back pressure on the fluid passing through the choke. The choke housing has an inlet channel which intersects with an axial bore, part of which bore constitutes the discharge channel. An annular choke seat concentrically arranged in the discharge channel of the axial bore is adapted to receive an annular choke element. The choke element is affixed to a shuttle which is mounted on a fixed mandrel extending into the axial bore of the choke housing. The shuttle is dynamically sealed against the housing and mandrel such that a closed chamber is created in that portion of the axial bore opposite the discharge channel. The shuttle element is constructed to be fluid balanced such that it will move to achieve an equilibrium of pressure on its forward and rear surfaces. By introducing a desired pressure in the closed chamber, the shuttle and attached choke element will move and throttle the fluid flowing through the choke to automatically maintain a back pressure equal to the pressure in the closed chamber.
摘要翻译：背压控制扼流器操作以自动控制并保持通过扼流圈的流体所需的背压。扼流器壳体具有与轴向孔相交的入口通道，其一部分孔构成排出通道。同轴地布置在轴向孔的排出通道中的环形扼流圈适于接收环形扼流圈元件。扼流元件固定到穿梭件上，该梭子件安装在延伸到扼流圈壳体的轴向孔中的固定心轴上。穿梭件相对于壳体和心轴动态密封，使得在轴向孔的与排出通道相对的那部分中产生闭合腔室。穿梭元件被构造成流体平衡，使得其将移动以实现其前表面和后表面上的压力平衡。通过在闭合的腔室中引入所需的压力，梭子和附接的扼流圈元件将移动并节流流过扼流圈的流体，以自动保持等于封闭腔室中的压力的背压。

IPRDB

热门服务

关于我们

友情链接

联系方式