Multi-function orifice subassembly for flow limiters

Patent metadata

Field	Value
Publication number	US-11913586-B2
Application number	US-202117359185-A
Country	US
Kind code	B2
Filing date	Jun 25, 2021
Priority date	Aug 11, 2020
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

A flow limiter component including a monocoque body having first, second, and third sections along a longitudinal axis. The first section includes a first end defining a first edge of the monocoque body and a bordering second end, and a first inner diameter defining a first chamber inside the first section. The second section includes a solid wall, with an orifice disposed therein, in fluid communication with the first chamber, the orifice defined by a second inner diameter. The third section includes a third end bordering the second section and a fourth end defining a second edge of the body, and a third inner diameter, the third inner diameter defining a second chamber in the third section. The second chamber is in fluid communication with the orifice. The first inner diameter is greater than the third inner diameter, and the third inner diameter is greater than the second inner diameter.

First claim

What is claimed is:

1. A flow limiter component comprising:
a monocoque body having a first section, a second section, and a third section arranged along a longitudinal axis of the monocoque body;
the first section comprising:
a first end defining a first edge of the monocoque body and a second end bordering the second section; and
a first inner diameter relative to the longitudinal axis, the first inner diameter defining a first chamber inside the first section;

the second section comprising:
a solid wall;
wherein an orifice is disposed in the solid wall, in fluid communication with the first chamber, and
wherein the orifice is defined by a second inner diameter relative to the longitudinal axis;

the third section comprising:
a third end bordering the second section and a fourth end defining a second edge of the monocoque body;
a third inner diameter relative to the longitudinal axis, the third inner diameter defining a second chamber in the third section,
wherein the second chamber is in fluid communication with the orifice, and
wherein the first inner diameter is greater than the third inner diameter, and the third inner diameter is greater than the second inner diameter;

a cut-out defined in the third section, proximate the fourth end, wherein the cut-out is further defined between the second chamber and a flange of the fourth end of the third section, wherein the flange forms at least a part of an outer edge of the third section, and wherein the cut-out has a cut-out diameter greater than the third inner diameter; and
a strainer disposed in the cut-out and having a strainer diameter that is larger than the third inner diameter but smaller than or equal to the cut-out diameter, wherein the strainer and the solid wall further define borders of the second chamber, and wherein the flange retains the strainer.

2. The flow limiter component of claim 1 , further comprising:
a plurality of detents disposed in the first end.

3. The flow limiter component of claim 1 , further comprising:
a plurality of threads disposed on a first outer wall of the first section, the plurality of threads facing externally from the first section.

4. The flow limiter component of claim 1 , further comprising:
a plurality of detents disposed in the first end; and
a plurality of threads disposed on a first outer wall of the first section, including on the plurality of detents, wherein the plurality of threads face externally from the first section.

5. The flow limiter component of claim 1 , further comprising:
a spring having a first end and a second end, wherein the first end of the spring is disposed against at least the flange of the fourth end of the third section.

6. The flow limiter component of claim 1 , wherein:
the first section comprises a first outer diameter of a first outer wall;
the second section comprises a variable second outer diameter that defines a second outer wall of the second section such that the second outer wall is longitudinally sloped between the first section and the third section;
the third section comprises a third outer diameter of a third outer wall of the third section.

7. The flow limiter component of claim 6 , wherein:
the first outer diameter is greater than the third outer diameter.

8. The flow limiter component of claim 1 , wherein:
the first inner diameter of the first chamber is at least fifty percent larger than the third inner diameter of the second chamber.

9. The flow limiter component of claim 8 , wherein
the third inner diameter of the second chamber is at least three times larger than a the second inner diameter of the orifice.

10. An aircraft comprising:
a fuselage;
a hydraulic system disposed in the fuselage;
a flow limiter operably disposed in the hydraulic system, the flow limiter comprising a flow limiter component comprising:
a monocoque body having a first section, a second section, and a third section arranged along a longitudinal axis of the monocoque body;
the first section comprising:
a first end defining a first edge of the monocoque body and a second end bordering the second section; and
a first inner diameter relative to the longitudinal axis, the first inner diameter defining a first chamber inside the first section;

the second section comprising:
a solid wall;
wherein an orifice is disposed in the solid wall, in fluid communication with the first chamber, and
wherein the orifice is defined by a second inner diameter relative to the longitudinal axis;

the third section comprising:
a third end bordering the second section and a fourth end defining a second edge of the monocoque body;
a third inner diameter relative to the longitudinal axis, the third inner diameter defining a second chamber in the third section,
wherein the second chamber is in fluid communication with the orifice, and
wherein the first inner diameter is greater than the third inner diameter, and the third inner diameter is greater than the second inner diameter;
a cut-out defined in the third section, proximate the fourth end, wherein the cut-out is further defined between the second chamber and a flange of the fourth end of the third section, wherein the flange forms at least a part of an outer edge of the third section, and wherein the cut-out has a cut-out diameter greater than the third inner diameter; and
a strainer disposed in the cut-out and having a strainer diameter that is larger than the third inner diameter but smaller than or equal to the cut-out diameter, wherein the strainer and the solid wall further define borders of the second chamber, and wherein the flange retains the strainer.

11. The aircraft of claim 10 , further comprising:
a plurality of detents disposed in the first end.

12. The aircraft of claim 10 , further comprising:
a plurality of threads disposed on a first outer wall of the first section, the plurality of threads facing externally from the first section.

13. The aircraft of claim 10 , further comprising:
a plurality of detents disposed in the first end; and
a plurality of threads disposed on a first outer wall of the first section, including on the plurality of detents, the plurality of threads facing externally from the first section.

14. The aircraft of claim 10 , further comprising:
a spring having a first end and a second end, wherein the first end of the spring is disposed against at least the flange of the fourth end of the third section.

15. The aircraft of claim 10 , wherein:
the first section comprises a first outer diameter of a first outer wall of the first section;
the second section comprises a variable second outer diameter that defines a second outer wall of the second section such that the second outer wall is longitudinally sloped between the first section and the third section;
the third section comprises a third outer diameter of a third outer wall of the third section.

16. The aircraft of claim 15 , wherein:
the first outer diameter is greater than the third outer diameter.

17. The aircraft of claim 10 , wherein:
the first inner diameter of the first chamber is at least fifty percent larger than the third inner diameter of the second chamber, and
the third inner diameter of the second chamber is at least three times larger than the second inner diameter of the orifice.

18. The aircraft of claim 10 , further comprising:
a landing gear system disposed in the fuselage, the landing gear system having the hydraulic system.

19. A method comprising:
installing a flow limiter in a hy

Assignees

• Boeing Co

Inventors

• Gudimetla Chandra Sudhakar

Classifications

• F16L55/027 Primary

  Throttle passages · CPC title

• F16K17/30

  spring-loaded · CPC title

• F16K17/34

  in which the flow-energy of the flowing medium actuates the closing mechanism · CPC title

• F16L55/02718

  placed transversely · CPC title

• F16L55/02781

  The regulating element being provided with radial outputs · CPC title