Method for designing a valve and method for producing a valve

Patent metadata

Field	Value
Publication number	US-2016238141-A1
Application number	US-201415027188-A
Country	US
Kind code	A1
Filing date	Oct 6, 2014
Priority date	Oct 9, 2013
Publication date	Aug 18, 2016
Grant date	—

Abstract

A method of designing a valve presenting an orifice of section that depends on the position of the valve member of the valve, which section can thus be controlled. The method includes determining a desired variation relationship for the flow section of the valve, which relationship defines a desired variation in the section as a function of time; setting a predetermined movement relationship for the valve member; and defining the shape of the fluid flow orifice in such a manner that, at each instant, if the valve member moves in compliance with the predetermined movement relationship, the flow section remains equal to the desired section. The method makes it possible to design a valve that is simple to control.

First claim

1 . A design method for designing a valve presenting a fluid flow orifice of variable section, said section depending on the position of a valve member of the valve, the position of said valve member being controlled by a command applied to the valve; the method comprising the following steps:
a) determining a desired variation relationship for the flow section of the valve, defining desired variation in the flow section of the valve as a function of time, at least over a time interval; b) setting a predetermined movement relationship that the valve member is desired to follow during said interval; and c) defining the shape of said fluid flow orifice in such a manner that, at each instant during said time interval, if the valve member moves during said interval in compliance with said predetermined movement relationship, the flow section remains equal to the section desired for that instant.

2 . A design method according to claim 1 , wherein said movement relationship is a constant speed movement relationship.

3 . A design method according to claim 1 , wherein a desired variation relationship is set for a parameter of a system of which the valve forms a part; said desired variation relationship for the section of the valve is determined as a function of said desired variation relationship for the parameter.

4 . A design method according to claim 1 , wherein both said desired variation relationship for the section of the valve and a desired variation relationship for a parameter of a system of which the valve forms a part are determined jointly by calculation.

5 . A design method according to claim 3 , wherein said parameter of the system is a flow rate of said valve.

6 . A method of fabricating a valve, the method including a step of designing a valve using the valve design method according to claim 1 , followed by a step of fabricating the valve as designed in this way.

7 . A design method according to claim 2 , wherein a desired variation relationship is set for a parameter of a system of which the valve forms a part; said desired variation relationship for the section of the valve is determined as a function of said desired variation relationship for the parameter.

8 . A design method according to claim 2 , wherein both said desired variation relationship for the section of the valve and a desired variation relationship for a parameter of a system of which the valve forms a part are determined jointly by calculation.

9 . A design method according to claim 4 , wherein said parameter of the system a flow rate of said valve.

10 . A method of fabricating a valve, the method including a step of designing a valve using the valve design method according to claim 2 , followed by a step of fabricating the valve as designed in this way.

11 . A method of fabricating a valve, the method including a step of designing a valve using the valve design method according to claim 3 , followed by a step of fabricating the valve as designed in this way.

12 . A method of fabricating a valve, the method including a step of designing a valve using the valve design method according to claim 4 , followed by a step of fabricating the valve as designed in this way.

13 . A method of fabricating a valve, the method including a step of designing a valve using the valve design method according to claim 5 , followed by a step of fabricating the valve as designed in this way.

14 . A method of fabricating a valve, the method including a step of designing a valve using the valve design method according to claim 7 , followed by a step of fabricating the valve as designed in this way.

15 . A method of fabricating a valve, the method including a step of designing a valve using the valve design method according to claim 8 , followed by a step of fabricating the valve as designed in this way.

16 . A method of fabricating a valve, the method including a step of designing a valve using the valve design method according to claim 9 , followed by a step of fabricating the valve as designed in this way.

Assignees

• Snecma

Inventors

• Le Gonidec Serge Daniel
• Hue Valentin
• Caron Anthony
• Barre William

Classifications

• F16K3/34

  Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve · CPC title

• F16K3/265 Primary

  with a sleeve sliding in the direction of the flow line · CPC title

• F16K31/54

  with pinion and rack · CPC title

• F02K9/58

  Propellant feed valves · CPC title