Flow splitter for a fluid system of a gas turbine engine
A gas turbine engine is disclosed having a working fluid system capable of moving a working fluid. The working fluid system includes a flow splitter capable of splitting the working fluid into different streams. In one form the flow splitter member is a T-shape, but other embodiments can take on other shapes. The flow splitter can include an internal scoop used to split the flow. In one form internal scoop is annular in shape and includes a turn to direct a split flow.
1. An apparatus comprising:
a gas turbine engine having a rotatable turbomachinery that includes a compressor and turbine, the gas turbine engine also having a combustor structured to mix a fuel with a compressed working fluid received from the compressor and combust the mixture, the gas turbine engine having a mechanical device that includes a utility fluid receiving portion;
a conduit carrying a utility fluid and in fluid communication with the mechanical device;
a fluid flow splitter comprising an inlet passage having a first effective cross-sectional area and configured to receive fluid flow from the conduit in a bulk direction;
an outlet passage;
a step-out passage linking the inlet passage to the outlet passage;
a scoop passage extending into the step-out passage, the scoop passage comprising a scoop inlet and a curvilinear scoop wall member configured to direct a portion of fluid flow away from the bulk direction;
wherein the step-out passage and the scoop passage collectively have a second effective cross-sectional area proximate the scoop inlet that is substantially equal to the first effective cross-sectional area.
2. The apparatus of claim 1 wherein the scoop passage extends into the step-out passage such that a first portion of the utility fluid flows around the entire periphery of the scoop inlet.
3. The apparatus of claim 2 wherein the outlet passage has a third cross-sectional area less than or equal to the first effective cross-sectional area.
4. The apparatus of claim 3 wherein the first portion of the utility fluid traversing the outlet passage is substantially equal to a second portion of the utility fluid traversing the scoop passage.
5. The apparatus of claim 1 wherein the outlet passage is configured to direct the first portion of utility fluid in substantially the bulk direction.
6. The apparatus of claim 1 , wherein the outlet passage, the inlet passage and the scoop passage each comprise a portion of exterior wall that is tapered to facilitate one or more hose connections.
7. The apparatus of claim 1 , wherein the scoop passage includes a smoothly changing shape structured to minimize fluid flow phenomena that decrease fluid flow efficiency.
8. The apparatus of claim 6 , wherein the one or more hose connections comprise a quick connect couplings.
9. The apparatus of claim 6 , wherein the one or more hose connections comprise threaded couplings.
10. An apparatus comprising:
a gas turbine engine having an inlet for the supply of air to a compressor, the gas turbine engine having a combustor operable to combust a mixture of fuel and air compressed by the compressor, the gas turbine engine also having a turbine structured to expand a flow stream delivered from the combustor;
a lubrication system having a plurality of conduits for the passage of a lubricant to be used with a mechanical device having components lubricated by the lubricant, the plurality of conduits including a feed conduit that provides lubricant to a fluid flow splitter comprising an inlet passage having a first cross-sectional area and configured to receive lubricant fluid flow in a bulk direction;
an outlet passage configured to direct a first portion of lubricant fluid flow in the bulk direction;
a step-out passage linking the inlet passage to the outlet passage;
a scoop passage extending into the step-out passage, the scoop passage comprising a scoop inlet and a curvilinear scoop wall member configured to direct a second portion of lubricant fluid flow in a direction substantially perpendicular to the bulk direction, the scoop inlet dividing flow proximate the scoop inlet into a circular scoop cross-sectional area and an annular step-out cross-sectional area;
wherein the circular scoop cross-sectional area and the annular step-out cross-sectional area collectively have a cross-sectional area that is substantially equal to the first cross-sectional area.
11. The apparatus of claim 10 , wherein the second portion of the lubricant fluid traversing the scoop passage is substantially equal to the first portion of lubricant fluid traversing the scoop passage.
12. The apparatus of claim 10 , wherein the outlet passage, the inlet passage and the scoop passage each comprise a portion of exterior wall that is tapered to facilitate one or more hose connections.
13. The apparatus of claim 12 , wherein the one or more hose connections comprise quick connect couplings.
14. The apparatus of claim 12 , wherein the one or more hose connections comprise threaded couplings.
15. The apparatus of claim 10 , wherein the scoop passage extends into the step-out passage such that the first portion of lubricant fluid flows around the entire periphery of the scoop inlet.
16. The apparatus of claim 15 , wherein the outlet passage has a second cross-sectional area less than or equal to the first cross-sectional area.
17. The apparatus of claim 10 , wherein the lubricant is oil.