Rotary exhaust valve system

Patent metadata

Field	Value
Publication number	US-9689502-B2
Application number	US-201514922709-A
Country	US
Kind code	B2
Filing date	Oct 26, 2015
Priority date	Oct 26, 2015
Publication date	Jun 27, 2017
Grant date	Jun 27, 2017

Abstract

According to one aspect, a rotary exhaust valve system includes an arcuate ring having a first plurality of apertures and a rotary valve ring disposed in an overlapping relation with the arcuate ring. The rotary valve ring has a second plurality of apertures forming therein corresponding to at least some of the first plurality of apertures. A first crank is disposed in a first side of the rotary exhaust valve system, and a second crank is disposed in a second side of the rotary exhaust valve system. The second crank is connected to the first crank and the rotary valve ring, and the first crank actuates the second crank and moves the rotary valve ring such that openings of the first plurality of apertures are closed and opened.

First claim

We claim:

1. A rotary exhaust valve system, comprising:
an arcuate ring having a first plurality of apertures therein;
a rotary valve ring disposed in an overlapping relation with the arcuate ring, the rotary valve ring having a second plurality of apertures formed therein corresponding to at least some of the first plurality of apertures;
a first crank disposed in a first side of the rotary exhaust valve system; and
a second crank disposed in a second side of the rotary exhaust valve system, the second crank connected to the first crank and the rotary valve ring, wherein the first side is separated from the second side via a separation member, wherein a crankshaft passing through the separation member connects the first crank to the second crank, wherein the first crank actuates the second crank and moves the rotary valve ring to align the at least some of the second plurality of apertures with the at least some of the first plurality of apertures forming openings that are closed and opened by movement of the rotary valve ring.

2. The rotary exhaust valve system of claim 1 , further comprising an actuator arm connected to the first crank, which reciprocates the first crank back and forth.

3. The rotary exhaust valve system of claim 2 , further comprising a spacer disposed on the actuator arm to adjust a range of motion of the first crank and the second crank, whereby sizes of the openings are adjusted based on a size of the spacer.

4. The rotary exhaust valve system of claim 3 , wherein an axial flow of an exhaust fluid through the rotary exhaust valve system is transformed to a radial flow through the openings formed by the alignment of the at least some of the first and second plurality of apertures.

5. The rotary exhaust valve system of claim 4 , wherein the radial flow of the exhaust fluid is modulated through adjustment of the openings based on selection of different size of the spacer.

6. The rotary exhaust valve system of claim 1 , wherein the arcuate ring is stationary and the rotary valve ring is moveable, and wherein the first side is at substantially ambient temperature and the second side is at substantially exhaust fluid temperature.

7. A fluid extraction system including an exhaust valve system, comprising:
a first member having a first plurality of apertures therein;
a second member having a second plurality of apertures therein, the second member disposed adjacent to the first member;
an actuation unit comprising an actuator connected to a first crank disposed on a first side of the exhaust valve system, a second crank disposed on a second side of the exhaust valve system connected to the first crank;
a separation member separating the first side from the second side; and
a crankshaft passing through the separation member connecting the first crank to the second crank, whereby the actuation unit is operatively connected to the second member and configured to align at least some of the second plurality of apertures with respect to the first plurality of apertures such that a predetermined flow of exhaust fluid can pass through the at least some of the aligned first and second plurality of apertures.

8. The fluid extraction system of claim 7 , wherein
the second crank reciprocates at least one of the first member and the second member with respect to each other.

9. The fluid extraction system of claim 8 , wherein the actuation unit further comprises a spacer disposed on the actuator to change a length of the actuator and thereby adjust a range of motion of the first crank and the second crank such that openings formed by the at least some of the aligned first and second plurality of apertures are adjustable.

10. The fluid extraction system of claim 9 , wherein the first member is stationary with respect to the second member.

11. The fluid extraction system of claim 7 , further comprising:
a first seal disposed between the first member and the second member; and
a second seal disposed between the first member and the second member opposite the first seal, wherein the first plurality of apertures and the second plurality of apertures are disposed between the first seal and the second seal.

12. A rotary exhaust valve system for testing operation of a compressor, the rotary exhaust valve system comprising:
an O-ring having a first aperture formed therein;
a rotary valve ring disposed in an overlapping relation with the O-ring, the rotary valve ring having a second aperture formed therein; and
an actuator unit having an actuator arm, a first crank, a second crank, and a spacer disposed between and connecting the actuator arm and the first crank;
wherein the first crank is connected to the second crank via a crank shaft passed through a separation member separating a first side from a second side of the rotary exhaust valve system;
wherein the second crank is further connected to the rotary valve ring to adjust alignment of the second aperture with respect to the first aperture, whereby an opening between the first and second aperture is adjusted based on size of the spacer.

13. The rotary exhaust valve system of claim 12 , wherein the spacer is adjustable.

14. The rotary exhaust valve system of claim 12 , wherein the spacer is interchangeable with another spacer of a different size.

15. The rotary exhaust valve system of claim 14 , further comprising:
a first seal disposed between the O-ring and the rotary valve ring; and
a second seal disposed between the O-ring and the rotary valve ring opposite the first seal, wherein the first aperture and the second aperture are disposed between the first seal and the second seal.

16. The rotary exhaust valve system of claim 14 , wherein a flow of exhaust fluid from the compressor through the opening is modulated as the opening is adjusted.

17. The rotary exhaust valve system of claim 16 , wherein an axial flow of the exhaust fluid is transformed to a radial flow through the first aperture and the second aperture.

18. The rotary exhaust valve system of claim 12 , wherein the opening includes an area of an exposed void formed by the alignment of the second aperture and the first aperture.

Assignees

• Rolls Royce Corp

Inventors

• Ottow Nathan W
• Cooper Nathan J

Classifications

• F16K11/076 Primary

  with sealing faces shaped as surfaces of solids of revolution · CPC title

• Y10T137/87491

  Mechanical movement between actuator and non-rotary valve · CPC title

• Y10T137/87523

  Rotary valve · CPC title

• F05D2260/83

  Testing, e.g. methods, components or tools therefor · CPC title

• F04D27/001

  Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring · CPC title