The high pressure governing valve level fall-off occured many times in 600 MW steam turbine of one power plant.
针对某电厂国产600MW汽轮机高压调节汽门运行中多次出现阀杆脱落的问题,从制造缺陷与安装工艺等方面深入分析原因,认为阀杆套底孔加工失误、螺纹加工间隙过大、安装紧力不足等因素是造成汽门阀杆脱落的主要原因,并结合实际给出了行之有效的解决阀杆脱落的办法。
Cause Analysis for Governing Valve Level Fall-off in 600MW Steam Turbine
国产600MW汽轮机调节汽门阀杆脱落原因分析
The rail came away in his hand.
横杆脱落在他手里。
No longer peeling of lining and clogging of filters& valves.
不再产生内衬的脱落和过滤器和阀的堵塞.
Stem – machined stem has a backseat design.
阀杆-经过机加工的阀杆具有后座结构。
Stem– precision machined stem has a backseat design.
(11) 阀杆-精加工阀杆配置后座结构。
Remove the relief valve cover, stem/diaphragm assembly, and relief valve spring.
拆卸安全阀阀盖，阀杆/隔膜总成，和安全阀弹簧。
cracking off
剥脱, 脱落, 拆去
The lower stem is encased in a spring which forces the stem away from the seat when the valve is opened.
下阀杆包裹在一个弹簧内部，当阀门开启时，弹簧迫使阀杆离开阀座。
Stem bearing to assure concentric stem rotation, allowing stem packing to provide maximum sealing effectiveness.
阀杆轴承保证同轴阀杆的旋转，使得阀杆填料具有最大的密封效果。
In all designs, the valve stem normally serves as a piston rod with disc fastened directly to them.
在所有结构中，阀杆通常作为活塞杆，阀瓣直接固定在阀杆上。
"Primary uses for wrot brass are for ball valve stems and balls, and iron valve stems. a forging grade of brass is used in ball valve bodies and pieces."
黄铜的主要用途是球阀阀杆和球体,和铸铁阀门的阀杆。可锻黄铜可用于球阀阀体和断口部件。
rising-stem double-disk parallel slide valve
明杆平行式双闸滑阀
a pedal that controls the throttle valve.
控制节流阀流量的杠杆。
The disc is stem guided on all sizes.
所有通径阀门的这种阀瓣是通过阀杆引导的。
Clean all carbon deposits from the combustion chambers, valve ports, valve stems, valve stem guides and hea
从燃烧室、阀口、阀杆、阀导管和盖清洁所有的积碳。
VALVES MUST NEVER BE LIFTED BY HANDWHEELS OR STEMS.
绝对不能用手抡或阀杆来提起阀门。
The stem rises and lowers as the valve is opened and closed.
当阀门开启或关闭时，阀杆上升或下降。
The stem has a slightly smaller diameter than the valve bore.
阀杆的直径略小于阀体孔的直径。