公开(公告)号：WO2017069925A1

公开(公告)日：2017-04-27

申请号：PCT/US2016/054672

申请日：2016-09-30

Applicant: DRESSER-RAND COMPANY

Inventor： JACHLEWSKI, Mark ,  FULLER, Bruce E. ,  RATAJEWSKI, Dariusz ,  FELTZ, James

IPC: F01D17/14 ,  F16K5/00

CPC classification number: F01D17/145 ,  F05D2230/80 ,  F05D2260/38 ,  F05D2300/171 ,  F05D2300/175 ,  F16K5/0678 ,  F16K5/201 ,  F16K25/005

Abstract: A trip valve for a steam turbine is provided and a method for upgrading the trip valve. The trip valve (200) includes a valve body (202) defining a cavity (204), a first port (206) and a second port (208). The first and second ports are fluidly coupled with the cavity. A ball (224) defining a passage (206) is disposed in the cavity and configured to selectively provide fluid communication between the first and second ports via the passage thereof. First (242) and second (244) valve seats are disposed in the cavity and configured to at least partially support the ball in the cavity. The first valve seat is disposed between the ball and the first port, and the second valve seat is disposed between the ball and the second port. The trip valve further includes a first biasing member (258) and a second biasing member (260) configured to urge the first valve seat and the second valve seat, respectively, toward the ball.

Abstract translation: 提供了一种用于蒸汽轮机的跳闸阀和一种用于升级跳闸阀的方法。 跳闸阀（200）包括限定空腔（204），第一端口（206）和第二端口（208）的阀体（202）。 第一和第二端口与腔体流体耦合。 限定通道（206）的球（224）设置在空腔中并且构造成通过其通道选择性地提供第一和第二端口之间的流体连通。 第一阀座（242）和第二阀座（244）设置在空腔中并且构造成至少部分地将空腔支撑在空腔中。 第一阀座设置在球与第一端口之间，第二阀座设置在球与第二端口之间。 所述跳闸阀还包括第一偏压构件（258）和第二偏压构件（260），所述第一偏压构件和第二偏压构件构造成分别朝所述球推动所述第一阀座和所述第二阀座。