Parallel metering pressure regulation system with integrated flow meter placement

Patent metadata

Field	Value
Publication number	US-10294866-B2
Application number	US-201414546088-A
Country	US
Kind code	B2
Filing date	Nov 18, 2014
Priority date	Nov 20, 2013
Publication date	May 21, 2019
Grant date	May 21, 2019

Abstract

A fuel pressure regulation system is provided. The fuel pressure regulation system includes a supply arrangement for supplying an outlet flow. The supply arrangement includes a primary pressure regulator and a bypass pressure regulator. The primary pressure regulator is operably connected to downstream pressures of each of a plurality of parallel metering circuits. The bypass pressure regulator is upstream from an output of a pump or pumps, which in combination with the primary pressure regulator, is operable to increase the output of the pump or pumps to accommodate for downstream pressure spikes in any one of the parallel metering circuits.

First claim

What is claimed is:

1. A parallel metering pressure regulation system for supplying metered fuel flow to a turbine engine, the system comprising:
a supply arrangement configured for providing an output flow of fuel at an output pressure;
a minimum pressurizing valve in fluid communication with the supply arrangement and a primary pressure regulator in fluid communication with the minimum pressurizing valve;
a parallel metering arrangement including a plurality of metering circuits arranged in parallel; and
the supply arrangement further comprising a flow meter interposed between the supply arrangement and the parallel metering arrangement to measure the output flow of fuel provided from the supply arrangement to the parallel metering arrangement.

2. The system of claim 1 , wherein the supply arrangement further comprises a boost pump and at least one pump receiving an output flow from the boost pump, the supply arrangement further comprising a bypass pressure regulator positioned downstream from the at least one pump and in fluid communication with an outlet thereof, and upstream from the flow meter.

3. The system of claim 2 , wherein the bypass pressure regulator is configured to regulate a pressure differential across an orifice of the supply arrangement.

4. The system of claim 3 , wherein the supply arrangement further comprises the primary pressure regulator in fluid communication with an outlet of the bypass pressure regulator.

5. A parallel metering pressure regulation system for supplying metered fuel flow to a turbine engine, the system comprising:
a supply arrangement configured for providing an output flow of fuel at an output pressure;
a parallel metering arrangement including a plurality of metering circuits arranged in parallel;
the supply arrangement further comprising a flow meter interposed between the supply arrangement and the parallel metering arrangement to measure the output flow of fuel provided from the supply arrangement to the parallel metering arrangement;
wherein the supply arrangement further comprises a boost pump and at least one pump receiving an output flow from the boost pump, the supply arrangement further comprising a bypass pressure regulator positioned downstream from the at least one pump and in fluid communication with an outlet thereof, and upstream from the flow meter;
wherein the bypass pressure regulator is configured to regulate a pressure differential across an orifice of the supply arrangement;
wherein the supply arrangement further comprises a primary pressure regulator in fluid communication with an outlet of the bypass pressure regulator; and
wherein the primary pressure regulator is in fluid communication with a metered flow of each metering circuit of the plurality of parallel metering circuits.

6. The system of claim 5 , wherein the primary pressure regulator is configured to regulate a pressure of the flow at the inlet thereof to a highest one of pressures of the metered flows from the plurality of metered circuits plus a reference pressure of the primary pressure regulator.

7. The system of claim 6 , wherein the bypass pressure regulator is configured to decrease an amount of a bypass flow therefrom in response to an increase in the pressure of the flow at the inlet of the primary pressure regulator to maintain a constant pressure differential across the orifice.

8. A parallel metering pressure regulation system for supplying metered fuel flow to a turbine engine, the system comprising:
a supply arrangement configured for providing an output flow of fuel at an output pressure;
a parallel metering arrangement including a plurality of metering circuits arranged in parallel; and
the supply arrangement further comprising a flow meter interposed between the supply arrangement and the parallel metering arrangement to measure the output flow of fuel provided from the supply arrangement to the parallel metering arrangement;
wherein the supply arrangement further comprises a boost pump and at least one pump receiving an output flow from the boost pump, the supply arrangement further comprising a bypass pressure regulator positioned downstream from the at least one pump and in fluid communication with an outlet thereof, and upstream from the flow meter; and
further comprising an actuation supply upstream from the flow meter and downstream from the at least one pump, the actuation supply in fluid communication with the outlet of the at least one pump.

9. A parallel metering pressure regulation system for supplying metered fuel flow to a turbine engine, the system comprising:
a supply arrangement configured for providing an output flow of fuel at an output pressure, the supply arrangement including a boost pump and at least one pump in fluid communication with an outlet of the boost pump to receive an output flow therefrom, the supply arrangement further comprising a bypass pressure regulator configured to bypass a portion of an output flow of fuel from the at least one pump back to an inlet side of the at least one pump;
a minimum pressurizing valve in fluid communication with the supply arrangement and a primary pressure regulator in fluid communication with the minimum pressurizing valve;
a parallel metering arrangement including a plurality of metering circuits arranged in parallel such that the output flow from the supply arrangement is divided across the plurality of metering circuits; and
the supply arrangement further comprising a flow meter downstream from the at least one pump and configured to measure the output flow provided to the supply arrangement.

10. The system of claim 9 , wherein the bypass pressure regulator is configured to regulate a pressure differential across an orifice of the supply arrangement.

11. The system of claim 10 , wherein the supply arrangement further comprises the primary pressure regulator in fluid communication with an outlet of the bypass pressure regulator.

12. A parallel metering pressure regulation system for supplying metered fuel flow to a turbine engine, the system comprising:
a supply arrangement configured for providing an output flow of fuel at an output pressure, the supply arrangement including a boost pump and at least one pump in fluid communication with an outlet of the boost pump to receive an output flow therefrom, the supply arrangement further comprising a bypass pressure regulator configured to bypass a portion of an output flow of fuel from the at least one pump back to an inlet side of the at least one pump;
a parallel metering arrangement including a plurality of metering circuits arranged in parallel such that the output flow from the supply arrangement is divided across the plurality of metering circuits; and
the supply arrangement further comprising a flow meter downstream from the at least one pump and configured to measure the output flow provided to the supply arrangement;
wherein the bypass pressure regulator is configured to regulate a pressure differential across an orifice of the supply arrangement;
wherein the supply arrangement further comprises a primary pressure regulator in fluid communication with an outlet of the bypass pressure regulator; and
wherein the primary pressure regulator is in fluid communication with a metered flow of each metering circuit of the plurality of parallel metering circuits.

13. The system of claim 12 , wherein the primary pressure regulator is configured to regulate a pressure of the flow at the inlet thereof to a highest one of pressures of the metered flows from the plurality of metered circuits plus a reference pressure of the primary pressure regulator.

14. The system

Assignees

• Baker Carthel C
• Woodward Inc

Inventors

• Baker Carthel C

Classifications

• F02C7/222

  Fuel flow conduits, e.g. manifolds · CPC title

• F02C7/236 Primary

  Fuel delivery systems comprising two or more pumps · CPC title