1. A fuel swirler assembly for a turbine engine combustor comprising:
an elongated swirler body having an inlet end and an outlet end, the swirler body defining a longitudinal axis, the swirler body having an outer peripheral surface and an inner peripheral surface;
a plurality of swirler vanes extending radially inward from the inner peripheral surface of the swirler body, the vanes being arrayed about the inner peripheral surface of the swirler proximate the inlet end; and
a bracket secured to the outer peripheral surface of the swirler body and projecting outward from the swirler body in a direction that is substantially radial to the longitudinal axis, the bracket having a radially distal end, the bracket including a hole adapted for removably receiving a fastener, such that the fastener is attached within the hole the hole extending inward from the radially distal end of the bracket in a direction that is substantially radial to the longitudinal axis, the hole opening to the radially distal end of the bracket,
wherein the bracket is located on the swirler body in a region defined between the inlet end and an axially central region of the swirler body.
2. The fuel swirler assembly of claim 1 wherein the bracket and the swirler body are unitary.
3. The fuel swirler assembly of claim 1 wherein the bracket is secured to the swirler body by welding.
4. The fuel swirler assembly of claim 3 wherein the bracket further includes a radially proximal end, and wherein the radially proximal end of the bracket substantially matingly engages the outer peripheral surface of the swirler body.
5. The fuel swirler assembly of claim 1 further including a second bracket secured to the outer peripheral surface of the swirler body, wherein the second bracket is located in a region defined between the inlet end and an axially central region of the swirler body.
6. The fuel swirler assembly of claim 1 further including a second bracket and a swirler extension sleeve, wherein the swirler extension sleeve is secured to the swirler body, wherein the outlet end of the swirler body is received within the swirler extension sleeve, and wherein the second bracket is secured to the swirler extension sleeve.
7. The fuel swirler assembly of claim 1 wherein the hole is threaded, whereby the hole can receive and be in threaded engagement with a threaded fastener.
8. A swirler attachment system comprising:
a combustor support frame having an inner peripheral surface and an outer peripheral surface, a radial hole extending through the combustor support frame from the inner peripheral surface to the outer peripheral surface;
a fuel swirler assembly having an elongated swirler body having an inlet end and an outlet end, the swirler body defining a longitudinal axis, the swirler body having an outer peripheral surface and an inner peripheral surface;
the fuel swirler assembly further including a bracket secured to the outer peripheral surface of the swirler body and projecting outward from the swirler body in a direction that is substantially radial to the longitudinal axis, the bracket having a radially distal end, the bracket including a hole adapted for removably receiving a fastener, the hole extending inward from the radially distal end of the bracket in a direction that is substantially radial to the longitudinal axis, the hole opening to the radially distal end of the bracket, wherein the bracket is located on the swirler body in a region defined between the inlet end and an axially central region of the swirler body; and
a fastener extending through the radial hole in the combustor support frame and attached within the hole in the bracket so as to secure the fuel swirler assembly to the combustor support frame, wherein the radially distal end of the bracket substantially engages the inner peripheral surface of the combustor support frame.
9. The system of claim 8 further including a seating surface on the inner peripheral surface of the combustor support frame, wherein the seating surface is adapted for substantially mating engagement with the radially distal end of the bracket.
10. The system of claim 9 wherein the seating surface is defined by a recess in the inner peripheral surface of the combustor support frame, wherein the recess does not extend through the entire thickness of the combustor support frame.
11. The system of claim 8 further including a swirler base plate secured to the combustor support frame, the swirler base plate including an opening, wherein an axial downstream end of the fuel swirler assembly is positioned substantially adjacent to the opening, whereby the fuel swirler assembly and the opening are in fluid communication.
12. The system of claim 8 further including a swirler base plate secured to the combustor support frame, the swirler base plate including an opening, wherein an axial downstream end of the fuel swirler assembly is received within the opening.
13. The system of claim 8 further including:
a swirler support plate, wherein the swirler support plate includes an opening for receiving an axial downstream end of the fuel swirler assembly; and
a swirler base plate including an opening, wherein the opening in the swirler support plate is disposed axially upstream of and in substantial alignment with the opening in the swirler base plate, wherein a portion of the fuel swirler assembly is received within the opening in the swirler support plate, wherein the swirler base plate is attached to the combustor support frame and the swirler support plate is attached to the swirler base plate.
14. The system of claim 13 wherein a portion of the fuel swirler assembly extends through the opening in the swirler support plate such that the axial downstream end of the fuel swirler assembly is positioned substantially proximate to the opening in the swirler base plate, wherein a peripheral gap is formed between the axial downstream end of the fuel swirler assembly and the swirler base plate, whereby air can pass through the gap so as to minimize flashback potential.
15. The system of claim 8 wherein the radial hole is adapted to provide a substantially dowel fit with the fastener, whereby movement of the fastener within the hole is substantially minimized.
16. The system of claim 8 further including a lock washer operatively positioned between the fastener and the outer peripheral surface of the combustor support frame, whereby the lock washer impedes unwanted travel of the fastener.
17. The system of claim 8 wherein at least one of the fastener and the hole in the bracket includes a special thread form, whereby unwanted travel of the fastener is impeded.
18. The system of claim 8 wherein the hole in the bracket is threaded and the fastener is a threaded bolt, wherein the hole threadably engages the bolt.
19. The system of claim 9 wherein the seating surface is defined by a protrusion extending radially inward from the inner peripheral surface of the combustor support frame.
20. The system of claim 13 further including a swirler extension sleeve attached to the swirler body, wherein the outlet end of the swirler body is received within the swirler extension sleeve, and wherein the axial downstream end of the fuel swirler assembly is defined by the swirler extension sleeve.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method comprising:
determining a failure of a logical connection in a logical circuit identified by a logical circuit identifier, the logical circuit comprising variable communication paths in at least one of a first logical telecommunications network or a second logical telecommunications network and a fixed communication path between the first and second logical telecommunications networks, and the failed logical connection being between the first and second logical telecommunications networks, and
identifying a logical failover circuit comprising an alternate communication path in a failover network that is separate from the logical circuit, the failover network being reserved to provide failover circuits to communicate data rerouted from failed logical circuits, and the logical failover circuit identified by a second logical circuit identifier;
renaming the logical circuit identifier of the logical circuit to the second logical circuit identifier of the logical failover circuit; and
rerouting data from the logical circuit to the logical failover circuit without manual intervention.
2. The method of claim 1, further comprising:
after rerouting the data to the logical failover circuit, determining whether the failure in the logical circuit has been corrected; and
if the failure in the logical circuit has been corrected, then rerouting the data from the logical failover circuit to the logical circuit without manual intervention.
3. The method of claim 1, further comprising:
after determining the failure in the logical circuit and before rerouting the data to the logical failover circuit, offering a failover service in real time to a customer associated with the logical circuit; and
performing the rerouting of the data to the logical failover circuit in response to receiving acceptance of the failover service by the customer.
4. The method of claim 1, further comprising after determining the failure in the logical circuit, performing the rerouting of the data to the logical failover circuit based on a customer subscription to a failover service, the data to be rerouted for a time period defined in the customer subscription.
5. The method of claim 1, wherein the first logical telecommunications network is operated by a first carrier different from a second carrier of the second logical telecommunications network.
6. The method of claim 1, wherein the logical connection comprises a network-to-network interface.
7. The method of claim 1, wherein the logical circuit identifier is one of a virtual pathvirtual circuit identifier (VPIVCI) or a data link connection identifier (DLCI).
8. The method of claim 1, wherein the logical failover circuit is a permanent virtual circuit.
9. The method of claim 8, wherein the logical failover circuit is a switched virtual circuit.
10. A system comprising:
a memory storing machine readable instructions; and
a processor to execute the instructions to:
determine a failure of a logical connection in a logical circuit identified by a logical circuit identifier, the logical circuit comprising variable communication paths in at least one of a first logical telecommunications network or a second logical telecommunications network and a fixed communication path between the first and second logical telecommunications networks, and the failed logical connection being between the first and second logical telecommunications networks;
identify a logical failover circuit comprising an alternate communication path in a failover network that is separate from the logical circuit, the failover network being reserved to provide failover circuits to communicate data rerouted from failed logical circuits, and the logical failover circuit identified by a second logical circuit identifier;
rename the logical circuit identifier of the logical circuit to the second logical circuit identifier of the logical failover circuit; and
reroute data from the logical circuit to the logical failover circuit without manual intervention.
11. The system of claim 10, wherein the processor is further to:
when the logical circuit is failed and before rerouting the data to the logical failover circuit, offer a failover service in real time to a customer associated with the logical circuit; and
reroute the data to the logical failover circuit in response to receiving acceptance of the failover service by the customer.
12. The system of claim 10, wherein the processor is further to, when the logical circuit is failed, reroute the data to the logical failover circuit based on a customer subscription to a failover service, the data to be rerouted for a time period defined in the customer subscription.
13. The system of claim 10, wherein the processor is separate from switches over which the data is communicated through the logical circuit and the logical failover circuit.
14. The system of claim 10, wherein the first logical telecommunications network is operated by a first carrier different from a second carrier of the second logical telecommunications network.
15. The system of claim 10, wherein the logical failover circuit comprises at least one unused logical connection comprising a network-to-network interface.
16. The system of claim 10, wherein the first logical circuit identifier is one of a virtual pathvirtual circuit identifier (VPIVCI) or a data link connection identifier (DLCI).
17. A tangible machine readable storage medium comprising instructions which, when executed, cause a machine to perform a method comprising:
determining a failure of a logical connection in a logical circuit identified by a logical circuit identifier, the logical circuit comprising variable communication paths in at least one of a first logical telecommunications network or a second logical telecommunications network and a fixed communication path between the first and second logical telecommunications networks, and the failed logical connection being between the first and second logical telecommunications networks;
identifying a logical failover circuit comprising an alternate communication path in a failover network that is separate from the logical circuit, the failover network being reserved to provide failover circuits to communicate data rerouted from failed logical circuits, and the logical failover circuit identified by a second logical circuit identifier;
renaming the logical circuit identifier of the logical circuit to the second logical circuit identifier of the logical failover circuit; and
rerouting data from the logical circuit to the logical failover circuit without manual intervention.
18. The machine readable storage medium of claim 17, wherein the method further comprises:
when the logical circuit is failed and before rerouting the data to the logical failover circuit, offering a failover service in real time to a customer associated with the logical circuit; and
rerouting the data to the logical failover circuit in response to receiving acceptance of the failover service by the customer.
19. The machine readable storage medium of claim 17, wherein the method further comprises, when the logical circuit is failed, rerouting the data to the logical failover circuit based on a customer subscription to a failover service, the data to be rerouted for a time period defined in the customer subscription.
20. The machine readable storage medium of claim 17, wherein the first logical telecommunications network is operated by a first carrier different from a second carrier of the second logical telecommunications network.