FR2530772A1 - Electromagnetically controlled valve for high pressure fluids. - Google Patents

Electromagnetically controlled valve for high pressure fluids. Download PDF

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Publication number
FR2530772A1
FR2530772A1 FR8212886A FR8212886A FR2530772A1 FR 2530772 A1 FR2530772 A1 FR 2530772A1 FR 8212886 A FR8212886 A FR 8212886A FR 8212886 A FR8212886 A FR 8212886A FR 2530772 A1 FR2530772 A1 FR 2530772A1
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France
Prior art keywords
valve
high pressure
seat
fluid
electromagnet
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Granted
Application number
FR8212886A
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French (fr)
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FR2530772B1 (en
Inventor
Jean Legrangerard
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RECH REALISA REGULATION
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RECH REALISA REGULATION
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Priority to FR8212886A priority Critical patent/FR2530772B1/en
Publication of FR2530772A1 publication Critical patent/FR2530772A1/en
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Publication of FR2530772B1 publication Critical patent/FR2530772B1/en
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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
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
    • F16K31/406—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston
    • F16K31/408—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston the discharge being effected through the piston and being blockable by an electrically-actuated member making contact with the piston

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

Valve for high pressure fluids of the type of those in which the flap is pushed against its seat by the interposition of a spring, characterised in that the main flap 7 has a central orifice 14, which is shut-off by a flap 15 for discharging the pressurised fluid contained in the valve, of which the axial displacement is controlled by an electromagnet 19 having a solenoid plunger. The flap 7 forms a piston making a chamber containing the high pressure fluid in the body of the valve, which fluid penetrates into said chamber via calibrated orifices and via the interstices resulting from the play between the movable parts, the total cross section allowing the passage of the fluid being much less than the cross section of the seat of the auxiliary flap; the core 18 of the electromagnet is housed in the aforementioned pressurised chamber.

Description

La présente invention est relative à une vanne à commande électromagnétique pour fluide à haute pression. The present invention relates to an electromagnetic control valve for high pressure fluid.

le problème posé consiste à réaliser une vanne à commande électromagnétique susceptible d'interrompre l'écoulement d'un fluide dont la pression est de l'ordre de 200 Bars. Jusqu'à présent, il n'a pas été possible de réaliser de telles vannes car les forces mises en jeu'auraient nécessité l'utilisation d'un électro-aimant très puissant, donc très coûteux et très volumineux. the problem posed consists in producing an electromagnetic control valve capable of interrupting the flow of a fluid whose pressure is of the order of 200 bars. Until now, it has not been possible to produce such valves because the forces involved would have required the use of a very powerful electromagnet, therefore very expensive and very bulky.

En effet, on sait que pour qu'une vanne fonctionne dans de bonnes conditions, il est nécessaire que le clapet soit appliqué fortement contre son siège et cette force doit être supérieure à celle qui tend'à le soulever lors de l'ouverture da la vanne. Ainsi, dans le cas,par exemple,d'une pression en amont de l'ordre de 200 Bars on est conduit à utiliser un ressort exerçant une force sur le clapet de l'ordre de 200 Kgs. Indeed, it is known that for a valve to operate in good conditions, it is necessary that the valve is applied strongly against its seat and this force must be greater than that which tends to lift it during the opening of the valve. valve. Thus, in the case, for example, of an upstream pressure of the order of 200 Bars, it is necessary to use a spring exerting a force on the valve of the order of 200 Kgs.

De ce fait, si le clapet d'une telle vanne doit etre commandé par un dispositif électromagnétique à noyau plongeur, il faut utiliser un électro-aimant susceptible de vaincre cette force antagoniste de 200 Kgs. Therefore, if the valve of such a valve must be controlled by an electromagnetic device with a plunger core, it is necessary to use an electromagnet capable of overcoming this antagonistic force of 200 Kgs.

La présente invention, qui remédie à cet-inconvénient,est remarquable en ce que le clapet qui, de la façon connue, est appliqué contre son siège par l'entremise d'un ressort, présente un orifice central normalement obturé par un clapet auxiliaire dont le déplacement axial est commandé par un électroaimant, le clapet principal étant porté par un piston ménageant dans le corps de la vanne une chambre sous pression communiquant avec le clapet auxiliaire. The present invention, which overcomes this drawback, is remarkable in that the valve which, in known manner, is applied against its seat by means of a spring, has a central orifice normally closed by an auxiliary valve whose axial movement is controlled by an electromagnet, the main valve being carried by a piston providing in the body of the valve a pressure chamber communicating with the auxiliary valve.

L'invention sera mieux comprise par la description qui va suivre, faite en regard des dessins annexés à titre d'exemple indicatif seulement, sur lesquels:
La figure 1 est une vue en coupe verticale d'une vanne conforme à l'invention;
La figure 2 est une vue partielle analogue à celle l,montrant à plus grande échelle les clapets de la vanne;
La figure 3 est une section effectuée par la ligne III
III de la figure 1. The invention will be better understood from the description which follows, given with reference to the accompanying drawings by way of indicative example only, in which:
Figure 1 is a vertical sectional view of a valve according to the invention;
Figure 2 is a partial view similar to that l, showing on a larger scale the valves of the valve;
Figure 3 is a section through line III
III of Figure 1.

En se reportant aux dessins et,notamment à la figure 1, on voit que la vanne comporte un corps constitué par trois parties 1,2 et 3 assemblées. Referring to the drawings and, in particular to FIG. 1, it can be seen that the valve comprises a body constituted by three parts 1, 2 and 3 assembled.

La partie 3 présente un orifice 4 d'entrée du fluide sous pression, un orifice 5 de sortie et constitue le siège 6 du clapet principal 7 qui est appliqué contre ledit siège par l'entremise d'un ressort 8 dont une des extrémités prend appui contre un bouchon 9 vissé dans la queue 7' du clapet 7 tandis que son autre extrémité prend appui sous le fond 10 d'un guide tubulaire 11 immobilisé axialement.A cet effet, la partie 2 du corps présente un épaulement 12 sous lequel prend appui une collerette 13 du guide 11. Le clapet 7 présente un orifice central 14 normalement obturé par un clapet auxiliaire 15 logé dans un évidement 16 dudit clapet et se prolongeant par une tige 17 traversant le bouchon 9 obturant l'évidement 16. Part 3 has an orifice 4 for entry of the pressurized fluid, an orifice 5 for outlet and constitutes the seat 6 of the main valve 7 which is applied against said seat by means of a spring 8, one end of which bears against a plug 9 screwed into the tail 7 'of the valve 7 while its other end is supported under the bottom 10 of a tubular guide 11 axially immobilized. To this end, the part 2 of the body has a shoulder 12 under which is supported a flange 13 of the guide 11. The valve 7 has a central orifice 14 normally closed by an auxiliary valve 15 housed in a recess 16 of said valve and extending by a rod 17 passing through the plug 9 closing the recess 16.

La tige 17, qui traverse le fond 10 du guide ll,présente à sa partie supérieure une masse magnétique 18 formant le noyau plongeur d'un électro-aimant schématisé par son bobinage 19. The rod 17, which crosses the bottom 10 of the guide ll, has at its upper part a magnetic mass 18 forming the plunger core of an electromagnet shown diagrammatically by its coil 19.

Un ressort 20 est interposé entre le clapet 15 et le bouchon 9. A spring 20 is interposed between the valve 15 and the plug 9.

Le clapet 7 est guidé dans un manchon 21 immobilisé axialement entre les parties 2 et 3 du corps et présentant des orifices 22 dont l'utilité apparaîtra plus loin. The valve 7 is guided in a sleeve 21 immobilized axially between the parts 2 and 3 of the body and having orifices 22 whose usefulness will appear later.

Le fluide sous pression,admis par l'orifice 4,pénètre dans le corps de la vanne par des canaux 23 prévus dans le manchon 21 et par un orifice 24 prévu dans le clapet 7 puis par les jeux prévus entre les pièces fixes et mobiles.Il en résulte que la pression d'entrée est appliquée,notamment, sur le noyau 18 et sur le bouchon 9 du clapet 7 qui est appliqué contre son siège par la force résultant de la pression exercée par le fluide et celle du ressort 8. The pressurized fluid, admitted through the orifice 4, enters the body of the valve through channels 23 provided in the sleeve 21 and through an orifice 24 provided in the valve 7 then through the clearances provided between the fixed and movable parts. As a result, the inlet pressure is applied, in particular, to the core 18 and to the plug 9 of the valve 7 which is applied against its seat by the force resulting from the pressure exerted by the fluid and that of the spring 8.

Le clapet auxiliaire 15 est appliqué contre son siège sous l'effet de la force résultant de la pression exercée sur le noyau I8, sur une surface égale à la section de l'orifice 14, et de la force du ressort 20. The auxiliary valve 15 is applied against its seat under the effect of the force resulting from the pressure exerted on the core I8, on a surface equal to the section of the orifice 14, and the force of the spring 20.

Pour ouvrir la vanne, on excite le bobinage 19 ce qui a pour effet de soulever le clapet auxiliaire 15.Les forces et les énergies mises en cause durant cette opération sont faibles puisque la section de l'orifice 14 est très petite par rapport à celle de l'orifice 5 et que la force du ressort 20 est également faible. To open the valve, the winding 19 is excited, which has the effect of raising the auxiliary valve 15. The forces and energies involved during this operation are low since the section of the orifice 14 is very small compared to that of the orifice 5 and that the force of the spring 20 is also weak.

Le soulèvement du clapet 15 provoque la vidange du fluide sous pression contenu dans le corps 1, 2, 3, qui ne peut se remplir car la section de l'orifice 24 est bien inférieure à celle de l'orifice 14. The lifting of the valve 15 causes the pressurized fluid contained in the body 1, 2, 3 to be emptied, which cannot be filled because the section of the orifice 24 is much smaller than that of the orifice 14.

De ce fait, toute la pression est appliquée sous l'épaulement 25 de la queue 7' du clapet 7.Pour soulever le clapet 7 il suffit donc que la pression qui s'exerce sous llépaulement 25 engendre une force qui soit supérieure à la force du ressort 8 ce qui est techniquement réalisable sans que le-diamètre de la vanne atteigne des dimensions importantes. Therefore, all the pressure is applied under the shoulder 25 of the tail 7 'of the valve 7.To lift the valve 7 it is therefore sufficient that the pressure exerted under the shoulder 25 generates a force which is greater than the force of spring 8 which is technically feasible without the diameter of the valve reaching large dimensions.

Pour fermer la vanne, il suffit de couper l'alimentation du bobinage 19 ce qui a pour effet de rappeler le clapet 15 contre son siège sous l'action du ressort 20. A ce moment, le liquide sous pression pénètre peu à peu dans le corps de la vanne et repousse progressivement le clapet 7 contre son siège. To close the valve, it suffices to cut the supply to the winding 19, which has the effect of bringing the valve 15 against its seat under the action of the spring 20. At this time, the pressurized liquid gradually penetrates into the valve body and gradually pushes the valve 7 against its seat.

Ce dispositif a donc l'avantage de ne pas interrompre brusquement le débit d'un fluide sous pression.This device therefore has the advantage of not suddenly interrupting the flow of a pressurized fluid.

Les orifices 22 ont pour fonction de faire chuter la pression du fluide de façon à éviter les phénomènes de cavitation qui entrainent une rapide destruction desclapets et des sièges. The orifices 22 have the function of causing the pressure of the fluid to drop so as to avoid cavitation phenomena which cause rapid destruction of the valves and seats.

En effet, la section des orifices 22 est telle que la vitesse du fluide qui les traverse ne peut pas engendrer de phénomènes de cavitation au droit desdits orifices mais ladite section des orifices est suffisante pour abaisser la prend sion du fluide de façon à ce que celui-ci, lors du soulèvement du clapet 7, puisse traverser l'orifice 5 à une vitesse suffisamment basse pour éviter,-aussi, ledit phénomène de cavitation. In fact, the section of the orifices 22 is such that the speed of the fluid passing through them cannot cause cavitation phenomena at the level of said orifices, but said section of the orifices is sufficient to lower the intake of the fluid so that the -ci, during the lifting of the valve 7, can pass through the orifice 5 at a sufficiently low speed to avoid, -also, said cavitation phenomenon.

Bien entendu, la présente invention ne se limite pas au mode de réalisation décrit et représenté mais s'étend, au oon- traire, à toutes variantes de formes et dimensions.  Of course, the present invention is not limited to the embodiment described and shown but extends, on the contrary, to all variants of shapes and dimensions.

Claims (6)

REVENDICATIONS l-Vanne pour fluide à haute pression du genre de celles dont le clapet est appliqué contre son siège par l'entremise d'un ressort, caractérisée en ce que le clapet (7) présente un orifice ( 14) central obturé par un clapet (15) dont le déplacement axial est commandé par un électro-aimant (I9).  l-Valve for high pressure fluid of the kind of which the valve is applied against its seat by means of a spring, characterized in that the valve (7) has a central orifice (14) closed by a valve ( 15) whose axial movement is controlled by an electromagnet (I9). 2-Vanne pour fluide à haute pression selon la revendication 1, caractérisée en ce que le clapet (7), principal, forme un piston ménageant dans le corps de la vanne une chambre contenant le fluide sous pression qui pénètre dans cette dernière par des orifices calibrés et par les interstices résultant du jeu des pièces mobiles, la section totale offerte au passage du fluide étant bien inférieure à la section du siège du clapet auxiliaire. 2-valve for high pressure fluid according to claim 1, characterized in that the valve (7), main, forms a piston providing in the valve body a chamber containing the pressurized fluid which enters the latter through orifices calibrated and by the gaps resulting from the play of the moving parts, the total section offered for the passage of the fluid being much less than the section of the seat of the auxiliary valve. 3-Vanne pour fluide à haute pression ,caractérisée en ce que la noyau ( in) de l'électro-aimant est logé dans la chambre sous pression précitée. 3-Valve for high pressure fluid, characterized in that the core (in) of the electromagnet is housed in the aforementioned pressure chamber. 4-Vanne pour fluide à haute pression selon l'un quel conique des revendications 1 à 3,caractérisée en ce que le clapet auxiliaire est appliqué contre son siège par l'entremise d'un ressort (20) et de la pression du fluide exerçant son action sur le noyau plongeur (18) de l'électro-aimant. 4-valve for high pressure fluid according to which conical of claims 1 to 3, characterized in that the auxiliary valve is applied against its seat by means of a spring (20) and the pressure of the operating fluid its action on the plunger core (18) of the electromagnet. 5-Vanne pour fluide à haute pression selon 1 i'une quelconque des revendications 1 à 4, caractérisée en ce que le ressort (8) appliquant le clapet (73 contre son siège prend appui sous le fond (10) d'un guide tubulaire (11) immobilisé axialement dans le corps de la vanne, la tige ( I7) de commande du clapet auxiliaire (15) traversant librement ledit fond. 5-valve for high pressure fluid according to 1 any of claims 1 to 4, characterized in that the spring (8) applying the valve (73 against its seat is supported under the bottom (10) of a tubular guide (11) immobilized axially in the valve body, the rod (I7) for controlling the auxiliary valve (15) freely passing through said bottom. 6-Vanne pour fluide à haute pression selon l'une quelconque des revendications 1 à 5,caractérisée en ce que le fluide sous pression parvient au siège (6) de la vanne en traversant un manchon tubulaire (21) présentant des orifices (22) permettant de faire chuter la pression pour éviter les phénomènes de cavitation.  6-valve for high pressure fluid according to any one of claims 1 to 5, characterized in that the pressurized fluid reaches the seat (6) of the valve through a tubular sleeve (21) having orifices (22) allowing the pressure to drop to avoid cavitation phenomena.
FR8212886A 1982-07-23 1982-07-23 ELECTROMAGNETICALLY CONTROLLED VALVE FOR HIGH PRESSURE FLUID Expired FR2530772B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8212886A FR2530772B1 (en) 1982-07-23 1982-07-23 ELECTROMAGNETICALLY CONTROLLED VALVE FOR HIGH PRESSURE FLUID

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8212886A FR2530772B1 (en) 1982-07-23 1982-07-23 ELECTROMAGNETICALLY CONTROLLED VALVE FOR HIGH PRESSURE FLUID

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FR2530772A1 true FR2530772A1 (en) 1984-01-27
FR2530772B1 FR2530772B1 (en) 1986-01-31

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2565660A1 (en) * 1985-08-12 1985-12-13 Target Rock Corp ANTICAVITATION VALVE ASSEMBLY
EP0640785A1 (en) * 1993-08-13 1995-03-01 NUOVOPIGNONE INDUSTRIE MECCANICHE E FONDERIA S.p.A. Pilot-actuated combination control valve

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2251441A (en) * 1937-02-01 1941-08-05 Detroit Lubricator Co Valve
DE1064770B (en) * 1955-05-07 1959-09-03 Erich Herion Flow valve with auxiliary valve control
DE1077496B (en) * 1958-03-29 1960-03-10 Fritz Maus Valve with drive by the pressure medium to be shut off and control by a preferably electromagnetic auxiliary valve
US2990155A (en) * 1959-03-30 1961-06-27 Honeywell Regulator Co Pressure operated valve
FR2187083A5 (en) * 1972-05-31 1974-01-11 Alsthom Cgee
FR2275715A1 (en) * 1974-06-20 1976-01-16 Oswald Herve Internally assisted electro control valve - double valve type acting on differential pressure for cryogenic installations

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2251441A (en) * 1937-02-01 1941-08-05 Detroit Lubricator Co Valve
DE1064770B (en) * 1955-05-07 1959-09-03 Erich Herion Flow valve with auxiliary valve control
DE1077496B (en) * 1958-03-29 1960-03-10 Fritz Maus Valve with drive by the pressure medium to be shut off and control by a preferably electromagnetic auxiliary valve
US2990155A (en) * 1959-03-30 1961-06-27 Honeywell Regulator Co Pressure operated valve
FR2187083A5 (en) * 1972-05-31 1974-01-11 Alsthom Cgee
FR2275715A1 (en) * 1974-06-20 1976-01-16 Oswald Herve Internally assisted electro control valve - double valve type acting on differential pressure for cryogenic installations

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2565660A1 (en) * 1985-08-12 1985-12-13 Target Rock Corp ANTICAVITATION VALVE ASSEMBLY
EP0640785A1 (en) * 1993-08-13 1995-03-01 NUOVOPIGNONE INDUSTRIE MECCANICHE E FONDERIA S.p.A. Pilot-actuated combination control valve
US5492150A (en) * 1993-08-13 1996-02-20 Nuovopignone-Industrie Meccaniche E Fonderia S.P.A. Combination control valve, particularly suitable for thermoelectric power plant

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Publication number Publication date
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