Fluid circuit in a turbine engine
AssigneeSnecma
InventorsLauranne Sophie Mottet, Nicolas Potel, Philippe Vertenoeuil
Life of this patent
Estimating the term…
Abstract
A device for controlling feed of fluid to equipment, such as a heat exchanger, the device including: a fluid slide valve mounted in a fluid circuit including a slide movable between two positions, a first position in which it allows the fluid to flow through the equipment, and a second position in which it prevents the fluid from flowing through the equipment; a laminar flow constriction arranged in the fluid circuit upstream from the slide valve; and a drive mechanism moving the slide of the slide valve between its two positions by head loss of the fluid in the laminar flow constriction.
Claims10
A device for controlling a feed of fluid to a heat exchanger, the device comprising:
- a fluid slide valve mounted in a fluid circuit and including a slide movable between first and second positions, the first position in which the slide allows a fluid to flow through the heat exchanger, and the second position in which the slide prevents the fluid from flowing through the heat exchanger;
- a laminar flow constriction arranged in the fluid circuit upstream from the slide valve;
- and
- a drive means for moving the slide of the slide valve between the first and second positions by head loss of the fluid in the laminar flow constriction,
- wherein the drive means comprises first and second chambers separated by the slide, the first chamber being in fluid flow communication with an inlet to the laminar constriction, and the second chamber being in fluid flow communication with an outlet from the fluid flow constriction,
- wherein the drive means further comprises return means configured to bring the slide into the first position when a pressure difference between the inlet and the outlet of the laminar constriction is less than a predetermined threshold,
- wherein the slide valve includes at least one fluid outlet connected to a parallel pipe in parallel with the heat exchanger, the slide of the slide valve allowing fluid to flow to the parallel pipe when the slide is in the second position, and preventing fluid from flowing in the parallel pipe when the slide is in the first position, and
- wherein the parallel pipe is incorporated in a support of the heat exchanger and extends at least in part in immediate proximity of the heat exchanger to transmit heat between the parallel pipe and the heat exchanger through the support.
A device for controlling a feed of fluid to a heat exchanger, the device comprising:
- a fluid slide valve mounted in a fluid circuit and including a slide movable between first and second positions, the first position in which the slide allows a fluid to flow through the heat exchanger, and the second position in which the slide prevents the fluid from flowing through the heat exchanger;
- a laminar flow constriction arranged in the fluid circuit upstream from the slide valve;
- and
- a drive means for moving the slide of the slide valve between the first and second positions by head loss of the fluid in the laminar flow constriction,
- wherein the laminar constriction includes a tube, and
- wherein an inside surface of the tube possesses a surface roughness defined by a coefficient Ra of about 15 μm, with an accuracy of ±5%.
Dependencies are inferred from the claim text.