FR2823282A1 - Valve has valve return controlled by valve control pressure taken from diversion in valve body discharging into chamber in which return piston slides - Google Patents

Valve has valve return controlled by valve control pressure taken from diversion in valve body discharging into chamber in which return piston slides Download PDF

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Publication number
FR2823282A1
FR2823282A1 FR0104894A FR0104894A FR2823282A1 FR 2823282 A1 FR2823282 A1 FR 2823282A1 FR 0104894 A FR0104894 A FR 0104894A FR 0104894 A FR0104894 A FR 0104894A FR 2823282 A1 FR2823282 A1 FR 2823282A1
Authority
FR
France
Prior art keywords
valve
return
control pressure
chamber
diversion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
FR0104894A
Other languages
French (fr)
Inventor
Jacques Libet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asco SAS
Original Assignee
Asco Joucomatic SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asco Joucomatic SA filed Critical Asco Joucomatic SA
Priority to FR0104894A priority Critical patent/FR2823282A1/en
Publication of FR2823282A1 publication Critical patent/FR2823282A1/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F16K31/1225—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston with a plurality of pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0405—Valve members; Fluid interconnections therefor for seat valves, i.e. poppet valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
    • F15B13/0431—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves the electrical control resulting in an on-off function
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/048—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with valve seats positioned between movable valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/363—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a piston

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Safety Valves (AREA)

Abstract

The valve is provided with valve return (13,13') which is controlled by the valve control pressure. The control pressure is taken from a diversion in the valve body (10) which discharges in a chamber (18) in which slides a return piston (20) coupled to the rod (14) carrying the valve.

Description

<Desc/Clms Page number 1> <Desc / Clms Page number 1>

La présente invention concerne une vanne dont l'organe d'obturation est constitué d'au moins un clapet, ce dernier étant muni d'un moyen de rappel de façon que la vanne puisse fonctionner, soit selon un mode normalement ouvert , soit selon le mode normalement fermé .  The present invention relates to a valve whose closure member consists of at least one valve, the latter being provided with a return means so that the valve can operate, either in a normally open mode, or according to the normally closed mode.

Les vannes actuelles à clapets sont munies d'un moyen de rappel qui est constitué d'un ressort. Le fait d'utiliser un moyen mécanique pour assurer la fonction de rappel du clapet présente un certain nombre d'inconvénients parmi lesquels on peut citer notamment : - une altération au cours du temps des caractéristiques mécaniques du ressort, due aux cycles répétés de fonctionnement ; - une possibilité d'endommagement du ressort, nécessitant son remplacement, lequel exige un démontage de la vanne.  Current valve valves are provided with a return means which consists of a spring. The fact of using a mechanical means to ensure the return function of the valve has a certain number of drawbacks among which there may be mentioned in particular: - an alteration over time of the mechanical characteristics of the spring, due to repeated cycles of operation; - a possibility of damage to the spring, requiring its replacement, which requires disassembly of the valve.

La présente invention se propose d'apporter une vanne ne comportant pas de tels inconvénients.  The present invention proposes to provide a valve which does not have such drawbacks.

Elle vise en conséquence une vanne à clapet munie d'un moyen de rappel, caractérisée en ce que le rappel du clapet est assuré par la pression de commande de ladite vanne.  It therefore relates to a flap valve provided with a return means, characterized in that the return of the valve is provided by the control pressure of said valve.

Selon un mode de réalisation de l'invention, la pression de commande assurant le rappel est prélevée par une dérivation ménagée dans le corps de vanne, le fluide de commande étant isolé du fluide distribué.  According to one embodiment of the invention, the control pressure ensuring the return is taken by a bypass formed in the valve body, the control fluid being isolated from the distributed fluid.

D'autres caractéristiques et avantages de la présente invention ressortiront de la description faite ci-après en référence aux dessins annexés sur lesquels : - la figure 1 est une vue en coupe verticale d'une vanne selon l'invention et - la figure 2 est une autre coupe verticale de la vanne par un plan passant par la dérivation prélevant la pression de commande assurant le rappel du clapet.  Other characteristics and advantages of the present invention will emerge from the description given below with reference to the appended drawings in which: - Figure 1 is a vertical sectional view of a valve according to the invention and - Figure 2 is another vertical section of the valve through a plane passing through the bypass taking the control pressure ensuring the return of the valve.

En se référant aux dessins, on voit que, dans cet exemple de réalisation non limitatif, la vanne comporte un corps 10 muni de trois voies : une alimentation en fluide distribué 12, une voie de distribution 14 de ce fluide et une voie d'échappement 16. L'organe de commande est constitué d'une tige Il munie d'un double clapet 13,13',  Referring to the drawings, it can be seen that, in this nonlimiting exemplary embodiment, the valve comprises a body 10 provided with three paths: a supply of distributed fluid 12, a distribution path 14 of this fluid and an exhaust path 16. The control member consists of a rod II provided with a double valve 13,13 ',

<Desc/Clms Page number 2><Desc / Clms Page number 2>

permettant d'isoler alternativement l'échappement 16 du circuit de distribution (position de la figure 1), et d'isoler l'alimentation 12 du circuit de distribution, la vanne étant alors à l'échappement. Il s'agit là d'une vanne dite 3-2 (3 voies-2 positions). L'invention peut également s'appliquer à une vanne dite 2-2 (2 voies- 2 positions).  permitting alternately isolating the exhaust 16 from the distribution circuit (position in FIG. 1), and isolating the supply 12 from the distribution circuit, the valve then being at the exhaust. This is a so-called 3-2 valve (3 ways-2 positions). The invention can also be applied to a so-called 2-2 valve (2 ways - 2 positions).

La pression de commande du clapet agit sur une piston de commande 15 en étant admise dans la chambre 17. Selon l'invention, on prélève une partie du fluide de commande de la chambre 17 pour l'amener dans une chambre 18 où, par sa pression, il agit sur un piston 20 coulissant dans le bouchon 19 du corps de vanne et monté à l'une des extrémités de la tige 14 portant le doublet clapet 13, 13'.  The control pressure of the valve acts on a control piston 15 while being admitted into the chamber 17. According to the invention, a part of the control fluid is withdrawn from the chamber 17 to bring it into a chamber 18 where, by its pressure, it acts on a piston 20 sliding in the plug 19 of the valve body and mounted at one end of the rod 14 carrying the valve doublet 13, 13 '.

On comprend que la pression de commande agit sur le piston 20 pour assurer le rappel du double clapet 13, 13'.  It is understood that the control pressure acts on the piston 20 to ensure the return of the double valve 13, 13 '.

Sur la figure 2, on peut voir en 21 la conduite de dérivation ménagée dans le corps de vanne pour amener le fluide de commande de la chambre 17 dans la chambre de rappel 18, ainsi que le distributeur 22 commandant la fonction rappel du double clapet 13, 13'.  In FIG. 2, we can see at 21 the bypass line formed in the valve body for bringing the control fluid from the chamber 17 into the return chamber 18, as well as the distributor 22 controlling the return function of the double valve 13 , 13 '.

La vanne selon l'invention peut être du type normalement ouvert ou du type normalement fermé.  The valve according to the invention can be of the normally open type or of the normally closed type.

On comprend de la lecture de la description qui précède que l'invention apporte une vanne à clapet dans laquelle la force de rappel du clapet ne varie pas au cours du temps, contrairement aux vannes à rappel par ressorts.  It will be understood from reading the above description that the invention provides a check valve in which the return force of the valve does not vary over time, unlike spring return valves.

La vanne à clapet selon la présente invention se caractérise en outre par la stabilité de la pression de commande (et de rappel) quelle que soit la pression distribuée.  The flap valve according to the present invention is further characterized by the stability of the control (and return) pressure whatever the pressure distributed.

Par ailleurs, il est possible de modifier la force de rappel en réglant la pression de rappel admise dans la chambre 18.  Furthermore, it is possible to modify the return force by adjusting the return pressure admitted into chamber 18.

Il demeure bien entendu que cette invention n'est pas limitée aux exemples de réalisation décrits et/ou représentés, mais qu'elle en englobe toutes les variantes. It remains to be understood that this invention is not limited to the embodiments described and / or shown, but that it encompasses all variants thereof.

Claims (5)

REVENDICATIONS 1-Vanne à clapet munie d'un moyen de rappel du clapet, caractérisée en ce que le rappel du clapet (13, 13') est assuré par la pression de commande de la vanne.  1-Flap valve provided with a valve return means, characterized in that the valve return (13, 13 ') is ensured by the control pressure of the valve. 2-Vanne selon la revendication 1, caractérisée en ce que la pression de commande assurant le rappel de la vanne est prélevée par une dérivation (21) ménagée dans le corps de vanne (10) et débouchant sur une chambre (18) dans laquelle coulisse un piston de rappel (20) attelé à la tige (14) portant le clapet (13, 13').  2-valve according to claim 1, characterized in that the control pressure ensuring the return of the valve is taken by a bypass (21) formed in the valve body (10) and opening onto a chamber (18) in which slides a return piston (20) coupled to the rod (14) carrying the valve (13, 13 '). 3-Vanne selon l'une des revendications précédentes, caractérisée en ce qu'elle comporte des moyens permettant de modifier la force de rappel du clapet, par variation de la pression s'exerçant sur le piston de rappel (20).  3-valve according to one of the preceding claims, characterized in that it comprises means for modifying the return force of the valve, by variation of the pressure exerted on the return piston (20). 4-Vanne selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle est du type normalement ouvert.  4-valve according to any one of the preceding claims, characterized in that it is of the normally open type. 5-Vanne selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'elle est du type normalement fermé. 5-valve according to any one of claims 1 to 3, characterized in that it is of the normally closed type.
FR0104894A 2001-04-10 2001-04-10 Valve has valve return controlled by valve control pressure taken from diversion in valve body discharging into chamber in which return piston slides Pending FR2823282A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0104894A FR2823282A1 (en) 2001-04-10 2001-04-10 Valve has valve return controlled by valve control pressure taken from diversion in valve body discharging into chamber in which return piston slides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0104894A FR2823282A1 (en) 2001-04-10 2001-04-10 Valve has valve return controlled by valve control pressure taken from diversion in valve body discharging into chamber in which return piston slides

Publications (1)

Publication Number Publication Date
FR2823282A1 true FR2823282A1 (en) 2002-10-11

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FR0104894A Pending FR2823282A1 (en) 2001-04-10 2001-04-10 Valve has valve return controlled by valve control pressure taken from diversion in valve body discharging into chamber in which return piston slides

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1437539A1 (en) * 2003-01-13 2004-07-14 Delphi Technologies, Inc. Variable force actuator with a double needle poppet assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1604915A (en) * 1966-09-05 1971-05-15
US3762443A (en) * 1967-09-19 1973-10-02 Tektro Inc Resilient fluid control valve
US4750521A (en) * 1986-04-23 1988-06-14 Concordia Fluidtechnik Gmbh Multiple connection valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1604915A (en) * 1966-09-05 1971-05-15
US3762443A (en) * 1967-09-19 1973-10-02 Tektro Inc Resilient fluid control valve
US4750521A (en) * 1986-04-23 1988-06-14 Concordia Fluidtechnik Gmbh Multiple connection valve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TRENTINI R: "VALVOLA PNEUMATICA A FUNZIONAMENTO PASSO-PASSO", OLEODINAMICA, PNEUMATICA, TECNICHE NUOVE. MILANO, IT, vol. 38, no. 8, 1 September 1997 (1997-09-01), pages 170 - 171, XP000720827, ISSN: 1122-5017 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1437539A1 (en) * 2003-01-13 2004-07-14 Delphi Technologies, Inc. Variable force actuator with a double needle poppet assembly
US6871668B2 (en) 2003-01-13 2005-03-29 Delphi Technologies Inc. Variable force actuator with a double needle poppet assembly

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