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Tool & Engineering, Inc.
1019 N. Waukesha St
PO Box 95
Bonifay, FL 32425
HTE is a wholly
owned subsidiary of:
Combustion Components Associates, Inc.
884 Main St
Monroe, CT 06468
Clean-Jet Fuel Adaptors
For Combustion Turbines
Reduces Maintenance Time by 40%
Holmes Tool & Engineering (HT) Clean-jet technology for combustion turbine
liquid (diesel) fuel adaptors provides consistent combustion performance and,
compared to OEM designs, reduces maintenance time by 40%. HTE developed the
Clean-jet Fuel adaptor and nozzle in response to concerns and questions from
Maintenance and Operations Personnel in the utility industry.
One type of OEM adaptor (candlestick) consists of an inner
& outer barrel that are welded together to produce a one-piece body to
which a two-piece atomizer nozzle tip and cap is attached. The annulus between
the two barrels typically clogs with carbon and progressively blocks or
restricts the atomizing air, resulting in degradation of performance of the
CTís, or in the case of dual fuel units, limits the CT to operate on gas only.
To facilitate cleaning/changing the adaptor, the CT has to be taken off-line,
resulting in a loss of valuable electrical energy production revenues.
Prior to the introduction of Clean-jet technology, some
facilities had to soak the candlesticks for up to 8 hours before attempting to
clean the annulus with various probes and wires. Even then, it was difficult to
thoroughly clean the small passages, and any carbon residue would adversely
affect the CTís performance. In addition, the adaptor used a two-pieced
atomizer that needed to be lapped to prevent leaks, a tedious task. The
servicing of each adaptor assembly would take up to 2-1/2 man-hours.
HTE has been a manufacturer of combustion components and
assemblies, serving the Utility, Industrial and Marine industries since 1978.
In 1997, a utility client of HTE outlined problems being experienced with the
OEM designed adaptor. HTE engineers and machinists worked on an improved
design. The objective was to provide a replacement candlestick including
atomizer that could be easily disassembled, cleaned and serviced. The overall
integrity of the original OEM design was to be preserved to insure that no
change in combustion characteristics or fuel throughput would result. The
Clean-jet adaptor is designed to be used with OEM tapered nozzle tip and cap,
or get more reliable performance with Clean-jet one-piece atomizer. Holmes Tool
and Engineering can also remanufacture the customerís one-piece adaptor bodies
to produce the improved two-piece design.
Clean-jet adaptors for Westinghouse CTís were developed in 1998. The
body consists of separate inner and outer barrels that bolt
together. There is a one-piece atomizer that never needs to be
lapped. In comparison to the OEM candlestick, the time required for
thoroughly servicing the Clean-jet unit has been reduced 40% and the
procedure is easy and simple. The Clean-jet fuel adaptor was first
installed in a Westinghouse Combustion Turbine in 1999 and has been
operating satisfactorily since. Because the Clean-jet adaptor
assembly can be thoroughly cleaned, our customers report that their
CTís operate reliably for longer periods with no unscheduled
shutdowns related to fouled adaptors, resulting in substantial
savings in lost energy production time. Since the original retrofit,
the customer has upgraded additional CTís. Other customers have
installed Clean-jet adaptors on various types of OEM combustion
turbines; they too are enjoying the benefits.
Contact Dave at Holmes Tool today to join our customers enjoying the benefits
of Clean-jet technology.
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