fail open 和 fail close 是在p&id中的语言,是针对阀门的,fail open 是指阀门动力故障时,阀为开的状态,fail close 则是关的状态,另外还有fail last,为阀门出现故障时,保持故障前状态。三个缩写分别为fo、fc和fl fail to open 是平常的用语,打不开的意思 0 评论0 举报 青珂,给排水工程师 2018-05-23...
1) FC (fail close) 故障时关闭 2) close failure 关闭故障 1. In order to determine the reasons to theclose failure,the forces acting on the main stop valve and its lever were analyzed in this paper. 为了确定该类型主汽门关闭故障的原因,对主汽门及其阀杆的受力进行了分析研究,采用高温蠕变理论...
This assembly features an MT Series spring return, fail closed actuator working in tandem with our GOW Series declutchable gear override. If you need to manually operate an automated valve during shutdown, maintenance, or emergency situations, a declutchable gear operator is the perfect way to ...
to derive a signal variable that directstheopen/close manipulation of a piezoelectricvalvetoemit the desired amount of oxygen into the growth module. veeco.com veeco.com 通过节省时间的自动化操作,控制系统将监控的氧气压力反馈与操作员为压力设定点和缓变率所输入的值进行比较 ,推导出指示压电阀开/关操...
asome parents do this better than others,of course.(And,sadly,some parents do ask questions because they don't trust their kids.)So start by trying to give your parents the benefit of the doubt,Maybe they're just trying to stay close because they love and care about you 当然有些父母比...
1. A fail-safe valve system wherein an input fluid pressure condition is applied through the system to a pair of output passages for application to pressure lines, with a valve assembly spring-floated in said system for operation by said input pressure condition to close off both said output...
1. A fail-safe valve system wherein an input fluid pressure condition is applied through the system to a pair of output passages for application to pressure lines, with a valve assembly spring-floated in said system for operation by said input pressure condition to close off both said output...
turned off, an isolated spring inside the valve forces it open. The magnetic force of the solenoid coil must overcome the force of the spring to close the valve. Unless acted upon, the spring force keeps the valve open. In the event of a power failure, the valve will automatically open....
aActuated Ball Valve 正在翻译,请等待...[translate] aFail Close with Lift Limitation 出故障关闭以推力局限[translate]
When emergency power is off, the spring releases the energy to drive the actuator and ensures that the equipment and device return o the safe position (full open or full close). 1.High performance with trusted and engineered reliability 2.Fully compliant wi...