 The
pressure parts of the steam generator consists of the radiant
section, the convection section and the water-water heat exchanger.
The feed water system, fuel burning system, steam seperator,
compressed air equipment, piping, valves, control cabinet and
other instruments are completely packaged on the base skid
ready for connection with outside terminal at the site. The
radiant section consists of a cylindrical shell with refractory
insulation and horizontal serpentines inside. The burner is
installed in front of the radiant section and the rear end
the _______ is ready to be connected with the convection duct.
The convection section consists of several rows of bare tubes (called shock tube
section) and extended surface convection tubes. The stack is mounted on the upper
part of the convection on the upper part of the convection sectionk, and the
lower part of the convection section is connecte to the convection duct. The
convection duct is usually of semi-circular cross-section and is made of plate
steel, refractory _____. It is welded together with the radiant section, and
connected of the convection sectionwith bolts. An observation prot for inspection
and maintenance is equipped at the rear end. Valves and pipings include feed-water
system, steam dischange, fuel atomizing, fuel oil and gas system, and pneumatic
control system.
The steam generator is equipped with various kinds of safety devices, alarms
and automatic control systems. Safety shutdown of the unit occurs when either
one of the safeguards system fails or anyone of the predetermined operating limits
reaches.
The steam generator is offered as fully serf-contained trailer-mounted models,
and can also be supplied in a few blocks, each mounted on a skid completely prefabricated
for easy transportation and installation at the site. |
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