FR2625819A1 - Method and device for regulating the flow rate of at least two gases according to the flow rate of one of the gases - Google Patents

Method and device for regulating the flow rate of at least two gases according to the flow rate of one of the gases Download PDF

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Publication number
FR2625819A1
FR2625819A1 FR8800174A FR8800174A FR2625819A1 FR 2625819 A1 FR2625819 A1 FR 2625819A1 FR 8800174 A FR8800174 A FR 8800174A FR 8800174 A FR8800174 A FR 8800174A FR 2625819 A1 FR2625819 A1 FR 2625819A1
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gases
inlet
restriction
restrictions
outlet
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FR2625819B1 (en
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FOURES JEAN BERNARD
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FOURES JEAN BERNARD
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00Control of flow ratio
    • G05D11/006Control of flow ratio involving a first fluid acting on the feeding of a second fluid

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Flow Control (AREA)

Abstract

The subject of the invention is a method and device for regulating the flow rate of at least two gases A, B by means of restrictions 3, 4 in which the pressure difference between the inlet and outlet of each restriction 3, 4 is directly proportional to the flow rate of each of the gases A, B, the said restrictions 3, 4 consisting of an amalgam of microballs or microwires, the bundling or compacting of which generates different permeabilities on each inlet 1, 2 in such a way as to obtain different gas flow rates at different pressure differences between inlet and outlet of the said restrictions 3, 4 allowing, by means of a pressure regulator with a membrane 6 and a valve 7 driven by one of the gases, to keep the chosen proportionality of the gas flow rates A, B by maintaining equal pressures at each inlet of the restrictions 3, 4.

Description

La présente invention concerne un procédé et dispositif de régulation de débit d'au moins deux gaz selon le débit d'un des gaz. The present invention relates to a method and device for regulating the flow rate of at least two gases according to the flow rate of one of the gases.

On connait différents modes pour réguler le débit d'au moins deux gaz, la proportionnalité entre les débits de chaque gaz est réalisée par des restrictions de type gicleur disposées sur les conduits de chaque gaz. Different modes are known for regulating the flow rate of at least two gases, the proportionality between the flow rates of each gas is achieved by restrictions of the nozzle type arranged on the conduits of each gas.

Ces sortes de restrictions ont pour inconvénient de donner- une différence de pression entre l'entrée et la sortie fonction du carré du débit qui les traverse, ce qui limite la plage des débits possibles et de ce fait ne permet pas une régulation proportionnelle des gaz précise à la fois dans les faibles et les forts débits.These kinds of restrictions have the disadvantage of giving a pressure difference between the inlet and the outlet depending on the square of the flow rate passing through them, which limits the range of possible flow rates and therefore does not allow proportional regulation of the gases. precise at both low and high flow rates.

L'invention a pour but de pallier à l'inconvénient précédemment exposé. The invention aims to overcome the drawback previously explained.

L'invention a pour objet un procédé et dispositif de régulation de débit gazeux dans lequel la différence de pression entre l'entrée et la sortie de chaque restriction est directement proportionnelle au débit de chacun des gaz caractérisé en ce que chaque restriction est constituée d'un amalgame de micro-billes et/ou micro-fils comprimés afin d'engendrer une perte de charge due à la perméabilité desdites restrictions, cette perméabilité dépendant du calibre des micro-billes et de leur tassement et/ou compactage des micro-fils permet avec des valeurs différentes sur chaque conduit d'obtenir des débits de gaz différents à des différences de pression entre entrée et sortie égales.Selon une application du procédé, il est aisé au moyen d'un régulateur de pression à membrane piloté par un des gaz de conserver la proportionnalité choisie des débits de gaz en maintenant à chaque entrée des restrictions des pressions égales. The subject of the invention is a method and device for regulating gas flow in which the pressure difference between the inlet and the outlet of each restriction is directly proportional to the flow of each of the gases, characterized in that each restriction consists of an amalgam of micro-beads and / or micro-threads compressed in order to generate a pressure drop due to the permeability of said restrictions, this permeability depending on the size of the micro-beads and their compaction and / or compaction of the micro-threads allows with different values on each pipe to obtain different gas flow rates at equal pressure differences between inlet and outlet. Depending on one application of the process, it is easy by means of a membrane pressure regulator controlled by one of the gases to maintain the chosen proportionality of gas flow rates by maintaining equal pressure restrictions at each entry.

D'autres caractéristiques et avantages de l'invention ressortiront plus clairement de la description qui va suivre faite en regard du schéma joint donné à titre d'exemple non limitatif. Other characteristics and advantages of the invention will emerge more clearly from the description which follows, given with regard to the attached diagram given by way of nonlimiting example.

Tel que représenté et notamment pour réguler les débits de deux gaz A et B de natures différentes, le dispositif comporte une arrivée 1 de gaz A et une arrivée 2 de gaz B, sur chacune des arrivées est disposée une restriction 3 et une restriction 4 dont les perméabilités respectives sont choisies selon la proportionnalité souhaitée entre les débits de chaque gaz. As shown and in particular for regulating the flow rates of two gases A and B of different natures, the device comprises an inlet 1 of gas A and an inlet 2 of gas B, on each of the inlets is a restriction 3 and a restriction 4, the respective permeabilities are chosen according to the desired proportionality between the flow rates of each gas.

Intermédiairement entre l'arrivée 1 de A et la restriction 3, un piquage 5 est raccordé à un régulateur comparateur de pression 6 à membrane agissant sur une soupape 7 afin d'augmenter ou diminuer le débit de gaz B selon la pression de A en 8 choisie et due à la perte de charge générée par la restriction 3 de sorte à obtenir une pression de B en 9 égale à la pression de A en 8.Intermediate between the inlet 1 of A and the restriction 3, a nozzle 5 is connected to a pressure comparator regulator 6 with a membrane acting on a valve 7 in order to increase or decrease the gas flow B according to the pressure from A to 8 chosen and due to the pressure drop generated by restriction 3 so as to obtain a pressure from B at 9 equal to the pressure from A at 8.

Tel que décrit si le débit de A diminue ou augmente la pression de A en 8 devient inférieure ou supérieure à la pression de B en 9, le régulateur 6 fait agir la soupape 7 afin de diminuer ou d'augmenter le débit de B et ce jusqu'à l'équilibre des pressions A et B en 8 et 9. Si le débit de B diminue 'ou augmente, la pression de B en 9 devient inférieure ou supérieure de A en 8, le régulateur 6 fait agir la soupape 7 afin de maintenir l'équilibre des pressions A et B en 8 et 9.La proportionnalité choisie entre les débits de A et B est donc maintenue constante dans chaque cas. As described if the flow of A decreases or increases the pressure of A at 8 becomes lower or greater than the pressure of B at 9, the regulator 6 causes the valve 7 to act in order to decrease or increase the flow of B and this until the pressures A and B at equilibrium in 8 and 9 are balanced. If the flow rate of B decreases or increases, the pressure of B at 9 becomes lower or greater from A to 8, the regulator 6 causes the valve 7 to act to maintain the balance of pressures A and B in 8 and 9. The proportionality chosen between the flows of A and B is therefore kept constant in each case.

Le dispositif peut avantageusement être utilisé pour réguler la proportionnalité entre plusieurs gaz selon le débit d'un des gaz.  The device can advantageously be used to regulate the proportionality between several gases according to the flow rate of one of the gases.

Claims (1)

REVENDICATIONS 10) Procédé de régulation de débit d'au moins deux gaz au moyen de restrictions solidaires des conduits de gaz dont la différence de pression entre l'entrée et la sortie de chacune d'elles est directement proportionnelle au débit de chaque gaz caractérisé en ce qu'il consiste à engendrer une perte de charge due à la perméabilité de chaque restriction afin de permettre avec des perméabilités différentes pour chaque restriction sur chaque conduit, des débits de gaz différents pour une égalité des différences de pression entre l'entrée et la sortie des restrictions selon la proportionnalité choisie.10) Method for regulating the flow of at least two gases by means of restrictions integral with the gas conduits, the pressure difference between the inlet and the outlet of each of which is directly proportional to the flow of each gas characterized in that it consists in generating a pressure drop due to the permeability of each restriction in order to allow with different permeabilities for each restriction on each duct, different gas flow rates for equal pressure differences between the inlet and the outlet restrictions depending on the proportionality chosen. 2") Dispositif de régulation de débit d'au moins deux gaz au moyen de restrictions solidaires des conduits de gaz dont la différence de pression entre l'entrée et la sortie de chaque restriction est directement proportionnelle au débit de chaque gaz selon le procédé, caractérisé en ce que chaque restriction (3, 4) est constituée d'un amalgame de micro-billes et/ou micro-fils comprimés engendrant une perte de charge due à la perméabilité de chacune des restrictions, ladite perméabilité de chaque restriction dépendant du calibre des micro-billes et de leur tassement et/ou du compactage des micro-fils de manière à obtenir des débits de gaz en sortie différents pour une égalité des différences de pression entre l'entrée et la sortie de chaque restriction (3, 4). 2 ") Device for regulating the flow of at least two gases by means of restrictions integral with the gas conduits, the pressure difference between the inlet and the outlet of each restriction is directly proportional to the flow of each gas according to the process, characterized in that each restriction (3, 4) consists of an amalgam of compressed micro-beads and / or micro-wires generating a pressure drop due to the permeability of each of the restrictions, said permeability of each restriction depending on the size micro-balls and their compaction and / or compaction of the micro-wires so as to obtain different gas flow rates for equal pressure differences between the inlet and the outlet of each restriction (3, 4) . 3 ) Dispositif de régulation de débit d'au moins deux gaz selon la revendication 2 caractérisé en ce que l'usage d'un régulateur de pression (6) à membrane agissant sur une soupape (7) piloté par un des gaz permet de régler à la proportionnalité choisie les débits des gaz en maintenant l'égalité des différences de pression entre l'entrée et la sortie de chaque restriction (3, 4).  3) Device for regulating the flow of at least two gases according to claim 2 characterized in that the use of a pressure regulator (6) with a membrane acting on a valve (7) controlled by one of the gases makes it possible to adjust at the chosen proportionality the gas flow rates while maintaining the equality of the pressure differences between the inlet and the outlet of each restriction (3, 4).
FR8800174A 1988-01-07 1988-01-07 METHOD AND DEVICE FOR CONTROLLING THE FLOW OF AT LEAST TWO GASES ACCORDING TO THE FLOW OF ONE OF THE GASES Expired - Fee Related FR2625819B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8800174A FR2625819B1 (en) 1988-01-07 1988-01-07 METHOD AND DEVICE FOR CONTROLLING THE FLOW OF AT LEAST TWO GASES ACCORDING TO THE FLOW OF ONE OF THE GASES

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FR8800174A FR2625819B1 (en) 1988-01-07 1988-01-07 METHOD AND DEVICE FOR CONTROLLING THE FLOW OF AT LEAST TWO GASES ACCORDING TO THE FLOW OF ONE OF THE GASES

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FR2625819A1 true FR2625819A1 (en) 1989-07-13
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0576817A1 (en) * 1992-06-27 1994-01-05 Lechler GmbH & Co.KG Method and device for supplying gas and liquid to a two component spray nozzle
EP0989401A2 (en) * 1998-09-23 2000-03-29 Eurovector S.p.A. Method and devices for improving the flash dynamic combustion reaction for the elemental analysis of C H N S O

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0098193A2 (en) * 1982-06-29 1984-01-11 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Flow meter mixer for supplying a mixture of two gases, the proportion of which may not be lower than a given value
JPS5954926A (en) * 1982-09-22 1984-03-29 Esutetsuku:Kk Manufacture of laminar flow element
EP0182257A2 (en) * 1984-11-13 1986-05-28 The Perkin-Elmer Corporation Fluid flow control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0098193A2 (en) * 1982-06-29 1984-01-11 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Flow meter mixer for supplying a mixture of two gases, the proportion of which may not be lower than a given value
JPS5954926A (en) * 1982-09-22 1984-03-29 Esutetsuku:Kk Manufacture of laminar flow element
EP0182257A2 (en) * 1984-11-13 1986-05-28 The Perkin-Elmer Corporation Fluid flow control system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 157 (P-288)[1594], 20 juillet 1984; & JP-A-59 54 926 (SUTANDAADO TEKUNOROJI K.K.) 29-03-1984 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0576817A1 (en) * 1992-06-27 1994-01-05 Lechler GmbH & Co.KG Method and device for supplying gas and liquid to a two component spray nozzle
EP0989401A2 (en) * 1998-09-23 2000-03-29 Eurovector S.p.A. Method and devices for improving the flash dynamic combustion reaction for the elemental analysis of C H N S O
EP0989401B1 (en) * 1998-09-23 2011-06-08 Eurovector S.p.A. Method and devices for improving the flash dynamic combustion reaction for the elemental analysis of C H N S O

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