20 SURFACE MACHINERY AND METHODS FOR OIL-WELL PUMPING.
The regulator gives a positive relative movement to the oil and
steam valves controlling the supply to the oil burners, and also con-
trols the dampers or air supply. This device or similar devices are
used at power plants in a number of oil fields where oil or gas is
used as a fuel.
The steam pressure actuates the diaphragm a, which moves the
weighted lever arm b, which transmits this movement to the pilot
valve c which in turn admits water under pressure to the cylinder d.
The admission of the water moves
Air discharge the plunger e, to which are attached
the main oil valve, the main steam
valve, and the boiler damper. In
this way the movement of the
plunger e controls the steam and
oil supply to the burner, also the
c air draft. Any change in the
a steam pressure operates the regu-
d - lator enough to supply the fuel
and air needed to make the steam
Needed by the boiler.
SEPARATOR AND COMPRESSION
A combined separator and com-
pression chamber for fuel-oil burn-
ing systems is shown in Figure 4.
The chamber consists of a closed
steel tank with inlet and outlet
pipes; an automatic float valve, a, a
baffle plate, b, air and gas space, c,
Inlet Outlet and water and sediment blow-off, d.
The purpose of this device is to aid
in delivering oil free from gas,
d sediment, and water to the burners
FIGURE 4.--Combined separator and com- at a constant pressure.
pression chamber for fuel-oil burning
system. For description, see text. Accumulated air and gas pres-
sure in air space c for down the
surface of the oil lowering the float valve a, opening the air-discharge
pipe, releasing the pressure, and permitting the oil to return to its
Various devices similar to this are used to feed oil engines.
NATURAL GAS AS FUEL.
Natural gas is an ideal fuel for boilers, as it has all of the ad-
vantages and none of the disadvantages of coal and oil. In practi-
George, H. C. Surface Machinery and Methods for Oil-Well Pumping. Washington D.C.. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc12407/. Accessed October 22, 2014.