Long duration ash probe
- Grand Forks, ND
- Grand Forks, MN
A long duration ash probe includes a pressure shell connected to a port in a combustor with a sample coupon mounted on a retractable carriage so as to retract the sample coupon within the pressure shell during sootblowing operation of the combustor. A valve mounted at the forward end of the pressure shell is selectively closeable to seal the sample coupon within the shell, and a heating element in the shell is operable to maintain the desired temperature of the sample coupon while retracted within the shell. The carriage is operably mounted on a pair of rails within the shell for longitudinal movement within the shell. A hollow carrier tube connects the hollow cylindrical sample coupon to the carriage, and extends through the carriage and out the rearward end thereof. Air lines are connected to the rearward end of the carrier tube and are operable to permit coolant to pass through the air lines and thence through the carrier tube to the sample coupon so as to cool the sample coupon.
- Research Organization:
- Univ. of North Dakota, Grand Forks, ND (United States)
- DOE Contract Number:
- FC21-86MC10637
- Assignee:
- Energy & Environmental Research Center Foundation (Grand Forks, ND)
- Patent Number(s):
- US 5331846
- OSTI ID:
- 869401
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ash
probe
pressure
shell
connected
combustor
sample
coupon
mounted
retractable
carriage
retract
sootblowing
operation
valve
forward
selectively
closeable
seal
heating
element
operable
maintain
desired
temperature
retracted
operably
pair
rails
longitudinal
movement
hollow
carrier
tube
connects
cylindrical
extends
rearward
air
lines
permit
coolant
pass
thence
cool
sample coupon
hollow cylindrical
heating element
desired temperature
valve mounted
pressure shell
longitudinal movement
shell connected
ash probe
duration ash
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