专利名称：PARTIAL STROKE TESTING SYSTEM
发明人：Tareq Nasr Albuaijan
申请号：US09779661
虎皮鸡爪>二月龄宝宝
申请日：20010209
公开号：US20020108436A1
亲子沟通公开日：
人生得意无尽欢
20020815
又是一年春来到
专利内容由知识产权出版社提供
专利附图：
武皇后摘要：A partial stroke testing system for online testing of emergency shut-off valve,said system is designed for implementation on an emergency shut-off valve with a main solenoid with manual ret, main solenoid valve, quick exhaust valve and a pneumatic巧克力的制作方法
actuator connected to a source of pressurized air supply for opening and closing the said
emergency shut-off valve and the said shut-off valve normally movable between a fully open and fully clod position. The system also include control means programmed into the plant emergency shutdown system controller for initiating electrical signal for initiating a test and for enhancing the bleed rate from the said pneumatic actuator in the event of a emergency trip signal. Test means for testing the said emergency shut-off valve without fully closing the emergency shut-off valve in respon to signal from the said control means is included in the system. The said test means, controlled by the said control means, include a cond solenoid and a cond solenoid valve for bleeding off pressurized air to thereby move the said emergency shut-off valve from full opened position to partially clod position. Means for limiting the movement of said emergency shut-off valve to a partially clod position becau of the bleeding of pressurized air is included in the system. The system also includes an isolation valve for isolating the said test means for maintenance purpo.
申请人：ALBUAIJAN TAREQ NASSER
对秋天的赞美更多信息请下载全文后查看
