Nonintrusive transceiver and method for characterizing temperature and velocity fields in a gas turbine combustor
First Claim
1. A transceiver for measuring acoustic properties of a gas in a turbine engine combustor, comprising:
- a housing defining a measurement chamber and having at least a first opening, the housing being adapted for attachment to a turbine engine combustor wall of the turbine engine combustor to permit propagation of acoustic signals between the gas in the turbine engine combustor and gas in the measurement chamber through the first opening;
an acoustic sensor mounted to the housing for receiving acoustic signals propagating in the measurement chamber, wherein the acoustic sensor is in communication with the measurement chamber through a second opening in the housing and wherein the measurement chamber comprises a substantially horn-shaped wave guide between the first opening and the second opening, the wave guide having a first cross sectional area near the first opening that is substantially larger than a second cross sectional area near the second opening; and
an acoustic transmitter mounted to the housing for creating acoustic signals within the measurement chamber.
4 Assignments
0 Petitions
Accused Products
Abstract
An acoustic transceiver is implemented for measuring acoustic properties of a gas in a turbine engine combustor. The transceiver housing defines a measurement chamber and has an opening adapted for attachment to a turbine engine combustor wall. The opening permits propagation of acoustic signals between the gas in the turbine engine combustor and gas in the measurement chamber. An acoustic sensor mounted to the housing receives acoustic signals propagating in the measurement chamber, and an acoustic transmitter mounted to the housing creates acoustic signals within the measurement chamber. An acoustic measurement system includes at least two such transceivers attached to a turbine engine combustor wall and connected to a controller.
84 Citations
16 Claims
-
1. A transceiver for measuring acoustic properties of a gas in a turbine engine combustor, comprising:
-
a housing defining a measurement chamber and having at least a first opening, the housing being adapted for attachment to a turbine engine combustor wall of the turbine engine combustor to permit propagation of acoustic signals between the gas in the turbine engine combustor and gas in the measurement chamber through the first opening; an acoustic sensor mounted to the housing for receiving acoustic signals propagating in the measurement chamber, wherein the acoustic sensor is in communication with the measurement chamber through a second opening in the housing and wherein the measurement chamber comprises a substantially horn-shaped wave guide between the first opening and the second opening, the wave guide having a first cross sectional area near the first opening that is substantially larger than a second cross sectional area near the second opening; and an acoustic transmitter mounted to the housing for creating acoustic signals within the measurement chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A system for measuring properties of a gas in a turbine engine combustor, comprising:
-
a first housing mounted to the turbine engine combustor and defining a first measurement chamber in communication with an interior of the turbine engine combustor through a first opening in a wall of the turbine engine combustor, the first opening permitting propagation of acoustic signals between the gas in the turbine engine combustor and gas in the first measurement chamber; a first acoustic sensor mounted to the first housing for receiving acoustic signals propagating in the first measurement chamber; a first acoustic transmitter mounted to the first housing for creating acoustic signals within the first measurement chamber; a controller coupled to the first acoustic sensor and the first acoustic transmitter, the controller further coupled to a second acoustic sensor arranged to receive acoustic signals propagating in the gas in the turbine engine combustor, the controller further coupled to a second acoustic transmitter for creating acoustic signals in the gas in the turbine engine combustor, the controller comprising; a processor; and computer readable media containing computer readable instructions that, when executed by the processor, cause the processor to perform the following operations; transmitting by the first acoustic transmitter a first acoustic signal; receiving by the second acoustic sensor a signal including contributions from the first acoustic signal; transmitting by the second acoustic transmitter a second acoustic signal; receiving by the first acoustic sensor a signal including contributions from the second acoustic signal; determining times of flight for the first and second acoustic signals including propagation times within the turbine engine combustor; processing the times of flight to determine the properties of the gas in the turbine engine combustor. - View Dependent Claims (11, 12, 13, 14, 15)
-
-
16. A method for actively monitoring gas flow characteristics in a turbine engine combustor, comprising:
-
transmitting, by a first acoustic transmitter, first acoustic signals in a first measurement chamber, the first measurement chamber being in communication with an interior of the turbine engine combustor through a first opening to permit propagation of the first acoustic signals from the first measurement chamber to the interior of the turbine engine combustor; providing a first acoustic sensor that is in communication with the first measurement chamber through a second opening in the housing; receiving, by a second acoustic sensor, the first acoustic signals in a second measurement chamber, the second measurement chamber being in communication with the interior of the turbine engine combustor through a second opening to permit propagation of the first acoustic signals from the interior of the turbine engine combustor to the second measurement chamber; guiding the first acoustic signals from the first opening through the first measurement chamber to the second acoustic sensor by using a substantially horn-shaped wave guide comprising a shape of the first measurement chamber having a first cross sectional area near the first opening that is substantially larger than a second cross sectional area near the second opening; determining, using a processor, a time-of-flight for the first acoustic signals along a fixed line-of-sound path in the turbine engine combustor from the first opening to the second opening; and processing, via a processor, the time-of-flight to determine the gas flow characteristics in the turbine engine combustor.
-
Specification