FR2773602A1 - Adjustable electrovalve suitable for use with liquid high pressure hydrocarbons and with proportional relationship between applied electric current and regulated pressure - Google Patents

Adjustable electrovalve suitable for use with liquid high pressure hydrocarbons and with proportional relationship between applied electric current and regulated pressure Download PDF

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Publication number
FR2773602A1
FR2773602A1 FR9900422A FR9900422A FR2773602A1 FR 2773602 A1 FR2773602 A1 FR 2773602A1 FR 9900422 A FR9900422 A FR 9900422A FR 9900422 A FR9900422 A FR 9900422A FR 2773602 A1 FR2773602 A1 FR 2773602A1
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FR
France
Prior art keywords
coil
high pressure
circuit
solenoid valve
needle
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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
FR9900422A
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French (fr)
Inventor
Carles Sadurni
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.)
Bitron Industrie Espana SA
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Bitron Industrie Espana SA
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Filing date
Publication date
Application filed by Bitron Industrie Espana SA filed Critical Bitron Industrie Espana SA
Publication of FR2773602A1 publication Critical patent/FR2773602A1/en
Pending legal-status Critical Current

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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
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0668—Sliding valves
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F16K1/38—Valve members of conical shape
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
    • G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
    • G05D16/2022—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means actuated by a proportional solenoid

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

An electrical winding (13) on a support (12) moves a magnetic core (20) over a conical airgap such that for a given current the force is almost constant. The magnetic core actuates a piston (4) which contains a valve needle (6). A spring (7) set to maximum pressure acts as a safety valve and a second spring (28) sets the minimum de-energised opening pressure. The winding is protected from the hydrocarbons by a brass ring (18)

Description

La présente demande concerne une électrovanne modulatrice haute pression, qui présente de remarquables avantages et innovations par rapport aux vannes actuelles utilisées à des fins identiques ou similaires. The present application relates to a high pressure modulating solenoid valve, which has remarkable advantages and innovations compared to current valves used for identical or similar purposes.

Plus concrètement, I'invention concerne une électrovanne modulatrice haute pression qui présente un rapport proportionnel entre le courant électrique appliqué et la pression régulée. More specifically, the invention relates to a high pressure modulating solenoid valve which has a proportional relationship between the electric current applied and the regulated pressure.

Ladite électrovanne est applicable aux circuits d'hydrocarbures liquides à haute pression grâce à son insensibilité à la corrosion produite par ces produits et comprend une sécurité mécanique pour limiter la valeur de la pression en cas de grippage ou de défaillance de l'électrovanne ainsi qu'un système d'étalonnage de la pression minimale d'ouverture en cas de déconnexion de l'électrovanne. Said solenoid valve is applicable to high pressure liquid hydrocarbon circuits thanks to its insensitivity to the corrosion produced by these products and includes mechanical safety to limit the value of the pressure in the event of seizure or failure of the solenoid valve as well as a system for calibrating the minimum opening pressure in the event of disconnection of the solenoid valve.

ETAT DE LA TECHNIOUE
Actuellement, il existe sur le marché des vannes mécaniques étalonnées à une pression d'ouverture, qui s'ouvrent pour décharger le fluide lorsque le circuit dépasse ladite pression, et des électrovannes dont la fonction consiste à réguler la pression du fluide. Lesdites électrovannes sont du type on/off, fonctionnent à basses pressions, sont contrôlées par fréquence et régulent le débit en variant le temps d'ouverture lors de chaque cycle, de sorte que le débit est de type pulsant, ce qui entraîne des problèmes de vibrations.STATE OF THE ART
Currently, there are on the market mechanical valves calibrated at an opening pressure, which open to discharge the fluid when the circuit exceeds said pressure, and solenoid valves whose function is to regulate the pressure of the fluid. Said solenoid valves are of the on / off type, operate at low pressures, are controlled by frequency and regulate the flow by varying the opening time during each cycle, so that the flow is of the pulsating type, which causes problems of vibrations.

DESCRIPTION DE L'INVENTION
L'électrovanne modulatrice haute pression, objet du présent enregistrement, comprend un circuit magnétique et un circuit hydraulique et elle est principalement caractérisée en ce que son circuit magnétique est conçu pour obtenir un rapport proportionnel entre l'intensité appliquée et la force obtenue, ainsi qu'une optimisation de ses caractéristiques magnétiques, ce qui permet qu'une vanne relativement petite module des pressions très élevées. DESCRIPTION OF THE INVENTION
The high pressure modulating solenoid valve, object of this registration, comprises a magnetic circuit and a hydraulic circuit and it is mainly characterized in that its magnetic circuit is designed to obtain a proportional ratio between the applied intensity and the force obtained, as well as 'an optimization of its magnetic characteristics, which allows that a relatively small valve modulates very high pressures.

De même, le circuit hydraulique est caractérisé en ce qu'il dispose d'une fermeture au moyen d'une aiguille, qui permet de réguler des pressions très élevées, sans que la force que doit neutraliser la bobine n'augmente, et comprend un ressort de sûreté étalonné à la pression maximale. De plus, L'aiguille a une forme conique qui aide à diriger le flux du liquide vers les sorties latérales. Likewise, the hydraulic circuit is characterized in that it has a closure by means of a needle, which makes it possible to regulate very high pressures, without increasing the force which the coil must neutralize, and comprises a safety spring calibrated at maximum pressure. In addition, the needle has a conical shape which helps direct the flow of liquid to the side outlets.

Pour compléter la description suivante et afin d'aider à mieux comprendre ses caractéristiques, la présente description est accompagnée de plans, sur les figures desquels sont représentés, de manière illustrative et non limitative, les détails les plus significatifs de l'invention. To complete the following description and in order to help better understand its characteristics, this description is accompanied by plans, in the figures of which the most significant details of the invention are shown, by way of illustration and without limitation.

BREVE DESCRIPTION DES DESSINS
L'unique figure représente une vue en coupe d'un mode de réalisation pratique de l'invention.BRIEF DESCRIPTION OF THE DRAWINGS
The single figure shows a sectional view of a practical embodiment of the invention.

DESCRIPTION D'UN MODE DE REALISATION PREFERE
Etant donné les figures commentées et conformément à la numérotation adoptée, les figures représentent un mode de réalisation préféré, bien que non limitatif, de l'invention, qui consiste en une électrovanne modulatrice à pression comprenant un circuit magnétique et un circuit hydraulique, compris dans un corps de base 1 qui dispose de couvercles supérieur 26 et inférieur 2, d'une couverture surinjectée 14 et de deux terminaux 19.DESCRIPTION OF A PREFERRED EMBODIMENT
Given the commented figures and in accordance with the numbering adopted, the figures represent a preferred embodiment, although not limiting, of the invention, which consists of a pressure modulating solenoid valve comprising a magnetic circuit and a hydraulic circuit, included in a base body 1 which has upper 26 and lower 2 covers, an over-injected cover 14 and two terminals 19.

Le circuit magnétique comprend une bobine et un circuit ferromagnétique, de sorte que la bobine comprenne une carcasse support 12 et un enroulement de fil de cuivre 13, alors que le circuit ferromagnétique comprend une partie fixe ou noyau fixe 15, 25 et 1, qui entoure la bobine, et une partie mobile ou noyau mobile 20 coaxial par rapport à la carcasse, qui se déplace à l'intérieur guidé par quelques bagues pilotes 3.  The magnetic circuit comprises a coil and a ferromagnetic circuit, so that the coil comprises a support carcass 12 and a winding of copper wire 13, while the ferromagnetic circuit comprises a fixed part or fixed core 15, 25 and 1, which surrounds the coil, and a mobile part or mobile core 20 coaxial with the carcass, which moves inside guided by a few pilot rings 3.

Le circuit ferromagnétique dirige le flux produit par la bobine en minimisant les restrictions à son passage, de sorte que dans l'entrefer soit créée une force qui tend à rapprocher le noyau mobile du noyau fixe. The ferromagnetic circuit directs the flow produced by the coil while minimizing the restrictions on its passage, so that a force is created in the air gap which tends to bring the mobile core closer to the fixed core.

La proportionnalité entre le courant appliqué et la force obtenue est due à un entrefer, dont la fermeture a une forme conique, ce qui permet d'obtenir une bobine dont la force est à peu près constante sur toute la course et pour une intensité donnée, grâce à quoi la vanne compense les variations de pression, en laissant passer un débit plus ou moins important, pour atteindre finalement une situation d'équilibre. The proportionality between the current applied and the force obtained is due to an air gap, the closure of which has a conical shape, which makes it possible to obtain a coil whose force is approximately constant over the entire stroke and for a given intensity, whereby the valve compensates for the pressure variations, by allowing a more or less significant flow, to finally reach an equilibrium situation.

Le circuit hydraulique est séparé de la bobine par une bague en laiton 18 qui évite que le fluide n'entre en contact avec un élément susceptible de se détériorer au contact d'un hydrocarbure. The hydraulic circuit is separated from the coil by a brass ring 18 which prevents the fluid from coming into contact with an element liable to deteriorate on contact with a hydrocarbon.

Ledit circuit hydraulique comprend une entrée de fluide composée d'un orifice coaxial à diamètre réduit, usiné au niveau du couvercle inférieur 2, dans lequel est insérée une aiguille 6. La section de passage délimitée par la couronne entre le diamètre extérieur de l'aiguille et le diamètre intérieur de l'orifice, détermine le débit que laisse passer la vanne pour une pression donnée, de sorte qu'en variant la longueur de l'aiguille insérée dans l'orifice, il est possible de contrôler la restriction du passage du débit et ainsi la pression dans le circuit. Ladite aiguille 6 a une forme conique qui dirige le flux vers les sorties latérales. Said hydraulic circuit comprises a fluid inlet composed of a coaxial orifice with reduced diameter, machined at the level of the lower cover 2, into which a needle 6 is inserted. The passage section delimited by the crown between the outside diameter of the needle and the internal diameter of the orifice, determines the flow rate which the valve lets pass for a given pressure, so that by varying the length of the needle inserted in the orifice, it is possible to control the restriction of the passage of the flow and thus the pressure in the circuit. Said needle 6 has a conical shape which directs the flow towards the lateral outlets.

Cette aiguille 6 se loge à l'intérieur d'un piston 4, guidée par une bague pilote 5, alors que ledit piston 4 est guidé à l'intérieur du corps 1 et est activé par la bobine au moyen d'un bouton 11, un ressort 7 étalonné à la force équivalant à la pression maximale, faisant office de vanne de sûreté, ayant été prévu en cas de mauvais fonctionnement de la bobine ou de grippage mécanique du piston hydraulique. This needle 6 is housed inside a piston 4, guided by a pilot ring 5, while said piston 4 is guided inside the body 1 and is activated by the coil by means of a button 11, a spring 7 calibrated to the force equivalent to the maximum pressure, acting as a safety valve, having been provided in the event of a malfunction of the coil or mechanical seizure of the hydraulic piston.

De même, un système de vis 27 et de ressort 28 a été prévu, permettant d'étalonner la pression minimale d'ouverture de la vanne lorsque aucun courant ne passe dans la bobine.  Likewise, a screw 27 and spring 28 system has been provided, making it possible to calibrate the minimum opening pressure of the valve when no current flows through the coil.

L'électrovanne comprend également un couvercle 8, un joint 9, quelques bagues 16, un collier 17 et quelques joints toriques 10, 21, 22, 23, 24 et 29. The solenoid valve also includes a cover 8, a seal 9, some rings 16, a collar 17 and some O-rings 10, 21, 22, 23, 24 and 29.

Le fonctionnement de cette électrovanne présente les avantages suivants
- Sa fonction de vanne de sûreté en cas de défaillance électrique ou de grippage mécanique du système de piston, qui surmonte la force du ressort de sûreté sur l'aiguille, lorsque la pression du système atteint le maximum autorisé, ouvrant le passage du débit et déchargeant le système.The operation of this solenoid valve has the following advantages
- Its function as a safety valve in the event of an electrical failure or mechanical seizure of the piston system, which overcomes the force of the safety spring on the needle, when the system pressure reaches the maximum authorized, opening the flow path and unloading the system.

- La vis 27 et le ressort 28 permettent de réguler la pression d'ouverture en cas de déconnexion de l'électrovanne. - The screw 27 and the spring 28 make it possible to regulate the opening pressure in the event of disconnection of the solenoid valve.

- Le mode de fonctionnement normal qui consiste à appliquer un courant à la bobine, ce qui induit un flux magnétique qui entraîne une force d'attraction dans le noyau mobile vers le noyau fixe, implique que, dans ce mouvement, le noyau mobile a tendance à fermer l'aiguille 6 au moyen du bouton 11, restreignant ainsi le passage du débit et réglementant la pression dans le circuit.  - The normal operating mode which consists in applying a current to the coil, which induces a magnetic flux which brings about a force of attraction in the movable core towards the fixed core, implies that, in this movement, the movable core tends to close the needle 6 by means of the button 11, thus restricting the passage of the flow and regulating the pressure in the circuit.

Claims (4)

REVENDICATIONS 1. ELECTROVANNE MODULATRICE HAUTE PRESSION, applicable de préférence à des circuits d'hydrocarbures liquides à haute pression, du type composée d'un circuit magnétique et d'un circuit hydraulique compris dans un corps de base (1) qui dispose de couvercles supérieur (26) et inférieur (2), caractérisée en ce que le circuit magnétique comprend une bobine et un circuit ferromagnétique, de sorte que la bobine comprenne une carcasse support (12) et un enroulement de fil de cuivre (13), alors que le circuit ferromagnétique comprend une partie fixe ou noyau fixe (15, 25, 1), qui entoure la bobine, et une partie mobile ou noyau mobile (20) coaxial par rapport à la carcasse, susceptible de se déplacer à l'intérieur en étant guidé par quelques bagues pilotes (3), de sorte que le circuit ferromagnétique dirige le flux produit par la bobine en minimisant les restrictions à son passage, de sorte que dans l'entrefer soit créée une force qui tend à rapprocher le noyau mobile (20) du noyau fixe (15, 25, 1) ; il a été prévu un entrefer dont la fermeture a une forme conique, appropriée pour obtenir une bobine dont la force est à peu près constante sur toute la course et pour une intensité donnée, de sorte que la vanne compense les variations de pression, en laissant passer un débit plus ou moins important, pour atteindre finalement une situation d'équilibre. 1. HIGH PRESSURE MODULATING SOLENOID VALVE, preferably applicable to high pressure liquid hydrocarbon circuits, of the type composed of a magnetic circuit and a hydraulic circuit included in a basic body (1) which has upper covers ( 26) and lower (2), characterized in that the magnetic circuit comprises a coil and a ferromagnetic circuit, so that the coil comprises a support carcass (12) and a winding of copper wire (13), while the circuit ferromagnetic comprises a fixed part or fixed core (15, 25, 1), which surrounds the coil, and a mobile part or mobile core (20) coaxial with the carcass, capable of moving inside being guided by some pilot rings (3), so that the ferromagnetic circuit directs the flow produced by the coil while minimizing the restrictions on its passage, so that in the air gap a force is created which tends to bring the movable core (2 0) of the fixed core (15, 25, 1); an air gap has been provided, the closure of which has a conical shape, suitable for obtaining a coil whose force is approximately constant over the entire stroke and for a given intensity, so that the valve compensates for the variations in pressure, leaving pass a more or less important flow, to finally reach a situation of balance. 2. ELECTROVANNE MODULATRICE HAUTE PRESSION, conforme à la revendication 1, caractérisée en ce que le circuit hydraulique présente une entrée de fluide composée d'un orifice coaxial à diamètre réduit, usiné au couvercle inférieur (2) du corps de la base (1), orifice dans lequel a été prévue une insertion de l'aiguille (6), de sorte qu'en variant la longueur de l'aiguille insérée dans l'orifice, il est possible de contrôler la restriction du passage du débit et la pression dans le circuit, ladite aiguille ayant une forme conique appropriée pour diriger le flux vers les sorties latérales. 2. HIGH PRESSURE MODULATING SOLENOID VALVE, according to claim 1, characterized in that the hydraulic circuit has a fluid inlet composed of a coaxial orifice with reduced diameter, machined to the lower cover (2) of the base body (1) , orifice in which an insertion of the needle (6) has been provided, so that by varying the length of the needle inserted in the orifice, it is possible to control the restriction of the flow passage and the pressure in the circuit, said needle having a conical shape suitable for directing the flow towards the lateral outlets. 3. ELECTROVANNE MODULATRICE HAUTE PRESSION, conforme aux revendications 1 et 2, caractérisée en ce que l'aiguille susmentionnée (6) est reçue à l'intérieur d'un piston (4), en étant guidée par une bague pilote (5), ledit piston (4) étant guidé à l'intérieur du corps (1), ayant été activé par la bobine au moyen d'un bouton (11), un ressort (7), taré à la force équivalant à la pression maximale, ayant été prévu et faisant office de vanne de sûreté en cas de mauvais fonctionnement de la bobine ou de grippage mécanique du piston hydraulique. 3. HIGH PRESSURE MODULATING SOLENOID VALVE, according to claims 1 and 2, characterized in that the aforementioned needle (6) is received inside a piston (4), being guided by a pilot ring (5), said piston (4) being guided inside the body (1), having been activated by the coil by means of a button (11), a spring (7), calibrated with the force equivalent to the maximum pressure, having been provided and acting as a safety valve in the event of a malfunction of the coil or mechanical seizure of the hydraulic piston. 4. ELECTROVANNE MODULATRICE HAUTE PRESSION, conforme aux revendications 1 à 3, caractérisée en ce que le circuit hydraulique est séparé de la bobine par une bague (18), de préférence en laiton, qui évite que le fluide n'entre en contact avec un élément susceptible de se détériorer au contact d'un hydrocarbure.  4. HIGH PRESSURE MODULATING SOLENOID VALVE, according to claims 1 to 3, characterized in that the hydraulic circuit is separated from the coil by a ring (18), preferably made of brass, which prevents the fluid from coming into contact with a element liable to deteriorate on contact with a hydrocarbon.
FR9900422A 1998-01-13 1999-01-13 Adjustable electrovalve suitable for use with liquid high pressure hydrocarbons and with proportional relationship between applied electric current and regulated pressure Pending FR2773602A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES09800053U ES1039141Y (en) 1998-01-13 1998-01-13 HIGH PRESSURE MODULATING SOLENOID VALVE.

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FR2773602A1 true FR2773602A1 (en) 1999-07-16

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FR9900422A Pending FR2773602A1 (en) 1998-01-13 1999-01-13 Adjustable electrovalve suitable for use with liquid high pressure hydrocarbons and with proportional relationship between applied electric current and regulated pressure

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1205660A2 (en) * 2000-11-08 2002-05-15 Eaton Corporation Low current solenoid valve
WO2004036329A2 (en) * 2002-10-16 2004-04-29 Zf Friedrichshafen Ag Pressure control valve

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3791408A (en) * 1972-05-31 1974-02-12 Yuken Kogyo Co Ltd Electromagnetic pressure-telecontrolling valve
US4313590A (en) * 1979-02-21 1982-02-02 Hitachi, Ltd. Solenoid valve for controlling flow of fluid
FR2527734A1 (en) * 1982-05-26 1983-12-02 Bosch Siemens Hausgeraete ELECTROMAGNETIC VALVE
GB2153907A (en) * 1983-12-14 1985-08-29 Diesel Kiki Co Solenoid valve constituting an on-off switch
EP0349642A1 (en) * 1987-03-14 1990-01-10 Techno Excel Kabushiki Kaisha Displacement sensor
FR2650362A1 (en) * 1989-07-28 1991-02-01 Theobald Sa A Solenoid valve for altering the flow rate of a pressurized fluid, and its applications
US5137055A (en) * 1992-01-14 1992-08-11 Yazaki Corporation Stop valve

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3791408A (en) * 1972-05-31 1974-02-12 Yuken Kogyo Co Ltd Electromagnetic pressure-telecontrolling valve
US4313590A (en) * 1979-02-21 1982-02-02 Hitachi, Ltd. Solenoid valve for controlling flow of fluid
FR2527734A1 (en) * 1982-05-26 1983-12-02 Bosch Siemens Hausgeraete ELECTROMAGNETIC VALVE
GB2153907A (en) * 1983-12-14 1985-08-29 Diesel Kiki Co Solenoid valve constituting an on-off switch
EP0349642A1 (en) * 1987-03-14 1990-01-10 Techno Excel Kabushiki Kaisha Displacement sensor
FR2650362A1 (en) * 1989-07-28 1991-02-01 Theobald Sa A Solenoid valve for altering the flow rate of a pressurized fluid, and its applications
US5137055A (en) * 1992-01-14 1992-08-11 Yazaki Corporation Stop valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1205660A2 (en) * 2000-11-08 2002-05-15 Eaton Corporation Low current solenoid valve
EP1205660A3 (en) * 2000-11-08 2005-01-19 Eaton Corporation Low current solenoid valve
WO2004036329A2 (en) * 2002-10-16 2004-04-29 Zf Friedrichshafen Ag Pressure control valve
WO2004036329A3 (en) * 2002-10-16 2004-07-01 Zahnradfabrik Friedrichshafen Pressure control valve

Also Published As

Publication number Publication date
ES1039141Y (en) 1999-03-16
ES1039141U (en) 1998-10-16

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