Gas turbine access port plug electrostatic probe

Patent · Tue May 27 00:00:00 EDT 1986

OSTI ID:5501609

Shattack, A B; Couch, R P

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
• Resource Relation: Patent File Date: Filed date 28 Dec 1982
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
GAS TURBINE ENGINES
ELECTROSTATIC PROBES
BLOWERS
CLOSURES
COAXIAL CABLES
DUCTS
ELECTRIC CONDUCTORS
ELECTRICAL INSULATORS
ELECTRODES
GAS FLOW
ION DETECTION
SEALS
CABLES
CHARGED PARTICLE DETECTION
CONDUCTOR DEVICES
DETECTION
ELECTRIC CABLES
ELECTRICAL EQUIPMENT
ENGINES
EQUIPMENT
FLUID FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
PROBES
RADIATION DETECTION
330103* - Internal Combustion Engines- Turbine