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 PDFInfo
- 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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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D11/00—Control of flow ratio
- G05D11/006—Control 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
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)
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 |
Applications Claiming Priority (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 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2625819A1 true FR2625819A1 (en) | 1989-07-13 |
FR2625819B1 FR2625819B1 (en) | 1995-10-13 |
Family
ID=9362159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8800174A Expired - Fee Related 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 |
Country Status (1)
Country | Link |
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FR (1) | FR2625819B1 (en) |
Cited By (2)
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)
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 |
-
1988
- 1988-01-07 FR FR8800174A patent/FR2625819B1/en not_active Expired - Fee Related
Patent Citations (3)
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)
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)
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 |
Also Published As
Publication number | Publication date |
---|---|
FR2625819B1 (en) | 1995-10-13 |
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