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US 8,573,245 B1Granted
Fuel manifold for turbine
AssigneeJansen's Aircraft Systems Controls, Inc.
InventorHarvey B. Jansen
Life of this patent
Estimating the term…
Abstract
A fuel manifold for turbine engines, such as the large turbines used for generating electrical power, has a housing with straight internal porting for routing fuel and purge media streams to the combustion area of the turbine. A pressure balanced fuel valve regulates fuel using a poppet actuator. A piston section of the actuator dynamically seals off actuation pressure from the fuel. A valve section of the actuator dynamically seals off a vented area from the fuel and regulates fuel flow through the valve. The piston section has internal porting to a collector tube within the vented area for directing media leaked past the piston seal(s) to a vent port, and thereby prevent mixing of the fuel and actuation media.
Claims15
A fuel valve, comprising:
- a valve body defining a main passageway communicable with fuel inlet and outlet ports, an actuation pressure area communicating with a pressure port, and a vented area communicating with a vent port;
- a poppet actuator disposed within the valve body for reciprocal movement along a stroke axis, the poppet actuator having a piston section and an annular valve section, the piston section creating a dynamic seal between the actuation pressure area and the fuel inlet and outlet ports, the valve section creating a dynamic seal between the vented area and the fuel inlet and outlet ports and creating a static seal between the fuel inlet and outlet ports when the valve is in a closed position, wherein the piston section has internal porting leading between an entry orifice and an exit orifice;
- a collector tube disposed within the vented area and having an internal passageway communicating the poppet exit orifice with the vent port of the valve body;
- and
- a plurality of return springs in a parallel force arrangement providing a force opposing the actuation pressure, wherein a first of the return springs contacts at one end an enlarged base of the collector tube and the poppet actuator at another end.
2 more elements
A fuel manifold, including:
- a fuel valve including:
- a valve body defining a main passageway communicable with fuel inlet and outlet ports, an actuation pressure area communicating with a pressure port, and a vented area communicating with a vent port;
- a poppet actuator disposed within the valve body for reciprocal movement along a stroke axis, the poppet actuator having a piston section and an annular valve section, the piston section creating a dynamic seal between the actuation pressure area and the fuel inlet and outlet ports, the valve section creating a dynamic seal between the vented area and the fuel inlet and outlet ports and creating a static seal between the fuel inlet and outlet ports when the valve is in a closed position, wherein the piston section has internal porting leading between an entry orifice and an exit orifice;
- a collector tube disposed within the vented area and having an internal passageway communicating the poppet exit orifice with the vent port of the valve body;
- wherein the manifold has a housing defining an internal fuel passageway containing the fuel valve and defining a straight passage between a fuel inlet and a fuel outlet of the housing;
- wherein the manifold defines an internal purge passageway intersecting the fuel passageway, the purge passageway defining a straight passage from a purge inlet of the housing;
- and
- further including a check valve disposed at the intersection of the fuel and purge passageways to regulate flow to the fuel outlet of the housing from one of the fuel inlet and purge inlet of the housing.
5 more elements
A fuel manifold, comprising:
- a housing having an internal fuel passageway defining a straight passage between a fuel inlet and a fuel outlet;
- and
- a fuel valve contained in the fuel passageway to regulate flow from the fuel inlet to the fuel outlet, the fuel valve including:
- a valve body defining a main passageway communicable with fuel inlet and outlet ports in communication with the fuel passageway of the housing, an actuation pressure area communicating with a pressure port, and a vented area communicating with a vent port;
- and
- a poppet actuator disposed within the valve body for reciprocal movement along a stroke axis, the poppet actuator having a piston section and an annular valve section, the piston section creating a dynamic seal between the actuation pressure area and the fuel inlet and outlet ports, the valve section creating a dynamic seal between the vented area and the fuel inlet and outlet ports and creating a static seal between the fuel inlet and outlet ports when the valve is in a closed position, wherein the piston section has internal porting leading between an entry orifice and an exit orifice;
- wherein the housing includes an internal purge passageway intersecting the fuel passageway, the purge passageway defining a straight passage from a purge inlet of the housing,
- further including a check valve disposed at the intersection of the fuel and purge passageways to regulate flow to the fuel outlet from one of the fuel inlet and purge inlet of the housing.
5 more elements
A fuel manifold, comprising:
- a housing having an internal fuel passageway defining a straight passage between a fuel inlet and a fuel outlet;
- and
- a fuel valve contained in the fuel passageway to regulate flow from the fuel inlet to the fuel outlet, the fuel valve including:
- a valve body defining a main passageway communicable with fuel inlet and outlet ports in communication with the fuel passageway of the housing, an actuation pressure area communicating with a pressure port, and a vented area communicating with a vent port;
- a poppet actuator disposed within the valve body for reciprocal movement along a stroke axis, the poppet actuator having a piston section and an annular valve section, the piston section creating a dynamic seal between the actuation pressure area and the fuel inlet and outlet ports, the valve section creating a dynamic seal between the vented area and the fuel inlet and outlet ports and creating a static seal between the fuel inlet and outlet ports when the valve is in a closed position, wherein the piston section has internal porting leading between an entry orifice and an exit orifice;
- and
- a collector tube mounted within the valve body and held in place by one or more return springs acting on the poppet actuator.
4 more elements
Dependencies are inferred from the claim text.