Are to trying to figure out the stretch? I have some toshiba specs that might have the material type I could look up for a similar turbine size (not a guarantee its the same). If you need to manufacture them, a vendor will be able to determine the material.
Thanks!
API 661
Heat exchangers standard, who would have thunk it.
7.2.3.5
BTS shall not exceed 12kft/min unless requested for the th buyer and in no case exceed 16Kft/min.
Anyone know the design limitations for specifying "blade tip speed" for an axial fan. I think the end use is blowing air to remove soot on the discharge of a boiler. Large volume, low pressure application.
Have an EPRI doc on fans but it doesn't really address the tip speed. No API standard...
I might be able to help.
Steam seals are designed with a constant flow model. Oil is non linear, it is a splash. No equations.
the oil deflector, because it is deflecting oil, is usually specified at 10 mils/foot diamater of the rotor. You set the deflector with clearance 1/3 on the bottom...
Did you find chemical carry over in the bypass taking up th design clearance or just run of the mill scale? what kind of boiler chemistry do you use? Have you run on the bypass for any length of time? If I recall, magnesium oxides, iron oxides and copper comes out of steam in the high temp...
First, I would verify the actual position of the valve stem by a visual on the stem if you haven't already done this.
Second, I would take a Hysteresis, which are are planning.
You have enough closing force when tripped to close the valve, but not enough to close it when using the servo...
If the turbine is exhausting extraction steam (back pressure turbine) then the impact will be zero (as far as the turbine is concerned )as long as the extraction steam temp/pressure meets the system's requirements. In my experience (paper mill, steel mill, food) the steam extracted has always...
I had issues using the spherical washers during assembly of the control valve bonnet to the steam turbine casing. Instead of leveling the force of the cap nut to bonnet, it created a bending force and significantly bent the stud over. I had to manufacture new standard washers and remove the...
