High wing compensation system

Patent metadata

Field	Value
Publication number	US-2018265221-A1
Application number	US-201615762645-A
Country	US
Kind code	A1
Filing date	Sep 27, 2016
Priority date	Sep 28, 2015
Publication date	Sep 20, 2018
Grant date	—

Abstract

The present disclosure includes a fluid system that may include a fluid conduit (30) that may be configured for connection with a fluid source (20) and a fluid destination (80). The system may include a fluid regulator (40) that may be configured to regulate fluid flow between said fluid source (20) and said fluid destination (80). The system may include a nozzle (66) that may be connected to the fluid conduit and may configured to connect the fluid conduit with said fluid destination. The system may include a first sensor (70.1) that may be connected to the fluid conduit, and a second sensor (70.4) that may be configured to acquire information from which a height of the nozzle can be determined. The system may include a controller (50) that may be configured to control operation of the fluid regulator according to (i) an output of the first sensor and (ii) the information acquired by the second sensor.

First claim

What is claimed is:

1 . A fluid system comprising:
a fluid conduit configured for connection with a fluid source and a fluid destination; a fluid regulator connected to the fluid conduit and configured to regulate fluid flow between said fluid source and said fluid destination; a nozzle connected to the fluid conduit and configured to connect the fluid conduit with said fluid destination; a first sensor connected to the fluid conduit; a second sensor, the second sensor configured to acquire information from which a height of the nozzle can be determined; and a controller configured to control operation of the fluid regulator according to (i) an output of the first sensor and (ii) the information acquired by the second sensor.

2 . The fluid system of claim 1 , wherein said fluid destination includes an aircraft fuel tank.

3 . The fluid system of claim 1 , wherein the first sensor includes a fluid pressure sensor, and the output of the first sensor corresponds to a pressure of fluid in the fluid conduit downstream of the fluid regulator.

4 . The fluid system of claim 1 , wherein the controller is configured to determine a height difference between the nozzle height during calibration and the nozzle height during normal use according to at least the information acquired by the second sensor.

5 . The fluid system of claim 4 , wherein the second sensor is connected to a lift deck of a fueling tool.

6 . The fluid system of claim 1 , wherein the information provided by the second sensor includes an absolute height of the nozzle.

7 . The fluid system of claim 4 , wherein controlling the operation of the fluid regulator includes compensating for the height difference.

8 . The fluid system of claim 7 , comprising a third sensor configured to detect a flow rate of fluid in the fluid conduit, and wherein compensating for the height difference includes deriving an expected nozzle pressure, and the controller is configured to derive the expected nozzle pressure according to:

P

2

e

=

P
1

-

(

Q
2

C
v
2



62.4
ρ

)

+

x
*
Δ



h

+

y



IF



Δ



h

≠
0

Where:
P 2e =the expected nozzle pressure
P 1 =a fluid pressure sensed via the first sensor;
Q=the flow rate sensed via the third sensor;
C v =a flow coefficient of the fluid system;
p=a fluid density of fluid in the fluid conduit;
x=a nozzle height offset coefficient;
Δh=the nozzle height difference; and,
y=a nozzle height offset constant.

9 . The fluid system of claim 8 , comprising a fourth sensor, wherein the fourth sensor is configured to detect an actual nozzle pressure, and wherein the controller is configured to determine the flow coefficient (C v ) of the fluid system while simultaneously detecting the fluid pressure (P 1 ) via the first sensor and the actual nozzle pressure via the fourth sensor.

10 . The method of claim 9 , wherein the fourth sensor is connected to the nozzle in a calibration configuration of fluid system and is not connected to the nozzle in a normal configuration of the fluid system, and wherein the controller is configured to determine calibration nozzle height via the second sensor while the fluid system is in the calibration configuration.

11 . The fluid system of claim 10 , wherein the nozzle height offset coefficient (x) is about 0. 35.

12 . The fluid system of claim 11 , wherein the nozzle height offset constant (y) is about 0 . 37 .

13 . The fluid system of claim 4 , wherein in a first configuration of said fluid destination, the height difference is a first height difference; in a second configuration of said fluid destination, the height difference is a second height difference; and, the second height difference is greater than the first height difference.

14 . The fluid system of claim 13 , wherein the controller is configured to control the fluid regulator such that a first fluid pressure is provided to said destination in the first configuration and a second fluid pressure is provided to said fluid destination in the second configuration, the second fluid pressure being greater than the first fluid pressure.

15 . A method of controlling fluid flow, the method comprising:
providing a fluid system, the fluid system comprising a fluid control system, and a fluid conduit between a fluid source and a fluid destination, wherein the fluid control system includes:
a fluid regulator connected to said fluid conduit;
a flow sensor configured to detect a fluid flow rate of said fluid conduit;
a pressure sensor configured to detect a fluid pressure of said fluid conduit downstream of the fluid regulator;
a nozzle connected to said fluid conduit and configured to selectively connect said fluid conduit with said fluid destination;
a height sensor configured for acquiring a nozzle height; and
a controller configured to control operation of the fluid regulator;
obtaining, via the controller, a nozzle height difference between the nozzle height in a calibration configuration of the fluid system and a current value of the nozzle height; deriving, via the controller, an expected nozzle pressure according to at least the fluid flow rate, the fluid pressure, and the nozzle height difference; and controlling, via the controller, operation of the fluid regulator according to the expected nozzle pressure.

16 . The method of claim 15 , wherein the expected nozzle pressure is derived according to:

P

2

e

=

P
1

-

(

Assignees

• Eaton Corp

Inventors

• Kuhns Matthew M
• Sbonek Robert L

Classifications

• B67D7/08

  Arrangements of devices for controlling, indicating, metering or registering quantity or price of liquid transferred (arrangement of flow- or pressure-control valves B67D7/36; computing, calculating, counting G06; coin-freed apparatus for dispensing fluids G07F13/00; prepayment devices for metering liquids G07F15/00) · CPC title

• B64F1/28 Primary

  Liquid-handling installations specially adapted for fuelling stationary aircraft · CPC title