Single RAM Type Bop

API 16A U style single ram bop  
 
 
U type Ram BOP, Ram opening pressure opens the rams. Following ram change-out, this pressure closes the bonnets.
 
The U blowout preventer is designed so that hydraulic pressure opens and closes the rams and provides themeans for quick ram change-out.
Ram closing pressure closes the rams. When the bonnet bolts are removed, closing pressure opens thebonnet. After the bonnet has moved to the fully extended position, the ram is clear of the body. An eyebolt canbe installed in the top of each ram to lift it out of the preventer.
 
Ram opening pressure opens the rams. Following ram change-out, this pressure closes the bonnets. The rams are pulled outward, near the bonnets, before the bonnets begin moving toward the preventer body. Thisassures that the rams never obstruct the bore or interfere with the pipe in the hole. Hydraulic pressure drawsthe bonnets tightly against the preventer body and the bonnet bolts are reinstalled to hold the bonnets closed.

 
Features of the product structure

1) Shape Generally, the BOP body is similar to a square, in the middle there is vertical bore through which the pipes 
can pass and the ram cavities in which the ram move in the horizontal direction.
2)Connection types The three connection types are studded, flange, clamped top and bottom connections. The sizes 
of flanges, bolts, clamps and ring grooves all conform to API standards.
 
(2) Features of Ram Structure and Application

For the double-face ram, the upper-face ram and lower-face of the ram are exactly symmetrical. For various drilling 
tools with different sizes, it only need to replace the semi-annular rubber sealing ring and ram compact, the other parts 
can be interchanged. The single-face ram can not be turned over; the shearing ram can shear the drilling tool in the hole 
to seal off the well. The ram BOP with variable bore rams can be used for the sealing off the casing and drilling tools 
of various sizes within a certain range.


Features of Ram Seal

The seal of the ram putting into effect of the packing wellhead must depend on four seals, i.e. the seal between the top 
of the ram and housing, the seal between the fore-end of the ram and the pipeline, the seal between the housing and the 
side-gate and the seal between piston rod and side gate.

Locking Device Features

The manual locking device uses manpower to rotate handwheel to close or lock rams. It should be noted that the 
manual locking device only can be used to close rams but not to open rams. Be sure to make the manual locking 
device return to the original position to unlock the rams before opening the rams with hydraulic pressure.