HP Bypass Valve / TBHP series
Steam pressure and flow are controlled by the position of the valve plug within the control cage.
A signal from the pressure control loop to the valve actuator moves the valve plug within the control cage to increase or decrease the amount of free flow area. The control cage has an array of calibrated orifices to provide the control characteristic specified. As the plug is lifted from the seat, steam is permitted to pass in to the center of the control X[iks]-trim cage and out through the seat ring.
The outlet section of the valve has a combination cooler and silencer section. As the steam leaves the seat ring, it enters a diffuser designed to further decrease steam pressure energy in a controlled-velocity expansion. Flow is directed radially through the multiple-path & Multi-turns Disk-Stack (X[iks]-trim) cage or multiple orifice cage diffuser, exiting in to the enlarged outlet pipe section. This section has been sized to accommodate the large change in specific volume associated with the pressure drop of the steam and to keep steam velocities within limits to control noise generation.
The outlet section is outfitted with a water supply manifold. The manifold (Multiple manifolds are also possible) provides cooling water flow to a number of individual spray nozzle installed in the pipe wall of the outlet section. The result is a fine spray mist injected in to the high turbulence of the radial steam flow. The combination of large surface are a contact of the water and high turbulence in the steam make a for very efficient mixing and almost immediate vaporization.
HP Bypass Valve
Single Port Unbalanced Trim
Size
( in x out)3" to 12" x 8" to 42"
Pressure Rating (ANSI)
900,1500,2500,4500
Process Connection
RF, RTJ, SW, BW, Others..
Trim Form
MH1S, MH2S, MHMS, X[iks]-trim
Application
HP Turbine bypass Valve.
Jawa Tengah - Batang