Gas turbine access port plug electrostatic probe
An electrostatic probe is described for detecting ions in a gas path of a gas turbine engine having a fan duct with a borescope access port through inner and outer walls thereof, the port including gas seal surfaces in the inner and outer walls of the fan duct and lock means in one of the fan duct walls for engaging a plug for closing off the port. The probe consists of: a hollow metallic wall structure including a respective seal for interfacing with each of the gas seal surfaces and latch means to hold the wall structure in place with the respective seals engaging the seal surfaces and with a proximal end of the wall structure adjacent the inner fan duct wall; a central conductor disposed within and extending beyond the proximal end of the wall structure, the proximal end of the central conductor forming an exposed electrode tip; an outer cylindrical conductor disposed within and extending beyond the distal end of the wall structure; electrical insulating material disposed between the central conductor and the outer cylindrical conductor to support the central conductor in electrical isolation within the outer cylindrical conductor; and a coaxial cable connector, the outer conductor of which is connected to the distal end of outer cylindrical conductor and the inner conductor of which is connected to the distal end of the central conductor.
- Assignee:
- United Technologies Corp., Hartford, CT
- Patent Number(s):
- US 4591794
- OSTI ID:
- 5501609
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330103* -- Internal Combustion Engines-- Turbine
BLOWERS
CABLES
CHARGED PARTICLE DETECTION
CLOSURES
COAXIAL CABLES
CONDUCTOR DEVICES
DETECTION
DUCTS
ELECTRIC CABLES
ELECTRIC CONDUCTORS
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
ELECTRODES
ELECTROSTATIC PROBES
ENGINES
EQUIPMENT
FLUID FLOW
GAS FLOW
GAS TURBINE ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
ION DETECTION
PROBES
RADIATION DETECTION
SEALS