WO1992018921A1 - Device for regulating the flow rate of a fluid in a fluid distribution network - Google Patents

Device for regulating the flow rate of a fluid in a fluid distribution network Download PDF

Info

Publication number
WO1992018921A1
WO1992018921A1 PCT/FR1992/000340 FR9200340W WO9218921A1 WO 1992018921 A1 WO1992018921 A1 WO 1992018921A1 FR 9200340 W FR9200340 W FR 9200340W WO 9218921 A1 WO9218921 A1 WO 9218921A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
enclosure
inlet
outlet
needle
Prior art date
Application number
PCT/FR1992/000340
Other languages
French (fr)
Inventor
Michel Emerit
Geneviève EMERIT
Original Assignee
Michel Emerit
Emerit Genevieve
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 Michel Emerit, Emerit Genevieve filed Critical Michel Emerit
Publication of WO1992018921A1 publication Critical patent/WO1992018921A1/en

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/01—Control of flow without auxiliary power
    • G05D7/0193—Control of flow without auxiliary power using hydraulic or pneumatic amplifiers, relays or transmitters

Definitions

  • the present invention relates to a method and a device for regulating the flow of fluid in a fluid distribution network comprising one or more circuits, each having an inlet and an outlet.
  • the object of the invention is to carry out an automatic adjustment of the flow rate of the fluid, so that its increase or decrease varies as a function of the pressure difference existing between the upstream (inlet) and the downstream (outlet) of the circuit.
  • the flow regulation device targeted by the invention comprises, between the inlet and the outlet, automatic self-regulation means adapted to maintain constant the difference in fluid pressure between the inlet and the outlet, at a predetermined set value.
  • the self-regulating means comprise, placed on a fluid conduit, between the inlet and the outlet, a movable adjustment member making it possible to create a variable pressure loss, and means for adjusting this pressure loss to the set value, cooperating with said adjusting member by means of a first enclosure opening onto the movable adjusting member and capable of being placed in communication, either with the outlet or with the fluid inlet, as a function of the actual value * of the pressure difference between the inlet and the outlet with respect to the set value.
  • Figure 1 is a schematic view of a first embodiment of the device for regulating the flow of a fluid according to the invention.
  • Figure 2 is a partial elevational view of a second embodiment of the device covered by one invention.
  • the device shown in Fig.l constitutes a fluid circuit that can be part of a distribution network comprising a set of such circuits, for example central heating.
  • This circuit comprises a main conduit 1 in which the fluid circulates in the direction indicated by the arrows FI and F2.
  • This device comprises, placed on the conduit 1 between an inlet A and an outlet B of fluid, a movable adjustment member 2 constituted by a flexible membrane 3 equipped with a needle 4.
  • the flexible membrane 3 is fixed internally to a tubular part 5 opening into the pipe 1 between the inlet A and the outlet B, the post 4 being positioned opposite a constriction 6 formed in an internal partition 7 of the pipe 1.
  • the needle 4 and the throttle 6 are dimensioned so that the latter can be closed partially or completely by the needle 4, pushed by the membrane 3, if the pressure exerted on the face of the latter opposite the needle 4 is sufficient.
  • the tubular part 5 delimits a first enclosure 8 closed on one side by the membrane 3 and on the other by a bottom 9, and which communicates by a pipe 11 with the conduit 1 at the level of the fluid outlet B.
  • the first enclosure 8 is extended by a second enclosure 12, with which it communicates by a constricted passage 13 forming a leak orifice, traversed by a rod 14.
  • One end of the latter is fixed to a flexible membrane 15 the periphery of which is itself internally fixed to the wall of the second enclosure 12.
  • the latter is thus divided into a first compartment 12a, containing a part of the rod 14, and a second compartment 12b, containing an elastic member 16 for calibrating the difference in fluid pressure between the inlet A and the outlet B.
  • This elastic member may for example be as shown , a helical spring 16 compressed between the flexible membrane 15 and a screw 17 for adjustment, crossing the bottom of the compar ⁇ timent 12b.
  • the end of the rod 14 opposite the membrane 15 carries a needle 18 capable of closing the inlet of the bypass formed by the pipe 11, when the pressure in the compartment 12b is sufficient.
  • the rod 14 carries a second needle 19, positioned opposite the passage 13 so as to be able to close it when the pressure in the enclosure 8 is sufficient, the needle 18 then being moved away from the inlet of the canalization 11 thus put in communication with the enclosure 8.
  • the second compartment 12b in which the calibration spring 16 is placed, communicates by a pipe 21 with the conduit 1 at the outlet B of fluid, while the first compartment 12a of the enclosure 12 communicates by a pipe 22 with fluid inlet A.
  • a and the outlet B is fixed by the calibration of the spring 16 by means of the screw 17.
  • This screw can optionally be removed, if the spring 16 is provided tared cons- truction, at a fixed value.
  • the pressure difference between A and B can be considered equal to the calibration value of the spring 16.
  • the pressure tap at A is then transmitted to the compartment 12a of the enclosure 12, and this pressure compresses the membrane 15.
  • the pressure at the outlet B, lower than the pressure at A, is transmitted to the first compartment 12b of the enclosure 12 by the pipe 21, and presses on the other face of the membrane 15.
  • the pressure in the compartment 12b thus comes, thanks to the complement provided by the pressure of the spring 16, the pressure A prevails in the compartment 12a.
  • the end needle 18 of the guide rod 14 secured to the membrane closes the inlet orifice of the pipe 11.
  • the pressure A and B increases, the pressure A will become greater than the sum of the pressures at B and the spring 16, so that the membrane 15 will move in the direction which prime the spring 16.
  • This compression has the effect of moving the fluid rod 14 in the direction which moves the needle 18 away from the inlet of the pipe 11 thus placed in communication with the enclosure 8, while the needle 19 closes the leak orifice 13.
  • the pressure in the enclosure 8 becomes equal to the pressure at the outlet B, which releases the membrane 3 which returns from its position 3a close to the constriction 6 towards its position 3, while correspondingly the post 4 returns from its position 4a in which it closes the throttle 6, to its position 4 in which it releases the throttle 6.
  • This opening of the throttle 6 allows the circulation of the fluid through the regulating member 2 which reduces the pressure difference between A and B.
  • the pressure difference has again reached its set point, determined by the calibration of the res ⁇ 16
  • the device is again positioned in equi ⁇ free and does not pass, through the throttle 6, that the amount of fluid required to maintain thisequili ⁇ bre.
  • a and B is however limited to a value equal to the pressure drop of the regulating member 2 wide open, and for the maximum fluid flow rate, corresponding to the pressure drop value.
  • the device according to the invention can be used as a progressive discharge valve at the foot of heating columns, as a progressive pump discharge valve or as a by-pass valve ("by-pass"). cooked regulated, this list is not exhaustive. It will be noted that this device operates without the addition of external energy, thanks to the energy of the regulated fluid.
  • the membrane 3 no longer carries a needle and directly closes a tubular part 23, soli ⁇ dary of the edge of the constriction 6 and appr ⁇ required length.

Abstract

The device is comprised, between the inlet (A) and the oulet (B) of the fluid, of automatic self-regulation means adapted to maintain the fluid pressure difference constant between the inlet (A) ant the oulet (B), at a predetermined set-point value; said means comprise, arranged on a fluid conduit (1) between the inlet (A) and the oulet (B), a movable regulating element (2) for creating a variable pressure drop, and means for adjusting said pressure drop to the set-point value, cooperating with said adjusting element through a first housing (5) opening to the movable adjusting element and communicating either with the fluid outlet (B) or fluid inlet (A) according to the effective value of the pressure difference between the inlet and the oulet with respect to the set-point value. The device according to the invention may be used as a progressive discharge valve, particularly at the foot of heating columns.

Description

Dispositif de régulation du débit d'un fluide dans un réseau de distribution de fluide. Device for regulating the flow of a fluid in a fluid distribution network.
La présente invention a pour objet un procédé et un dispositif pour réguler le débit de fluide dans un réseau de distribution de fluide comprenant un ou plu¬ sieurs circuits, ayant chacun une entrée et une sortie. Le but de l'invention est de réaliser un auto¬ réglage du débit de passage du fluide, de telle sorte que son augmentation ou sa diminution varie en fonction de la différence de pression existant entre l'amont (en¬ trée) et l'aval (sortie) du circuit. A cet effet le dispositif de régulation du débit visé par l'invention comprend, entre l'entrée et la sortie, des moyens d'autorégulation automatique adaptés pour maintenir constante la différence de pression de fluide entre l'entrée et la sortie, à une valeur de consigne prédéterminée.The present invention relates to a method and a device for regulating the flow of fluid in a fluid distribution network comprising one or more circuits, each having an inlet and an outlet. The object of the invention is to carry out an automatic adjustment of the flow rate of the fluid, so that its increase or decrease varies as a function of the pressure difference existing between the upstream (inlet) and the downstream (outlet) of the circuit. To this end, the flow regulation device targeted by the invention comprises, between the inlet and the outlet, automatic self-regulation means adapted to maintain constant the difference in fluid pressure between the inlet and the outlet, at a predetermined set value.
Suivant un mode de réalisation de l'invention, les moyens d'autorégulation comprennent, placés sur un conduit de fluide, entre l'entrée et la sortie, un or¬ gane de réglage mobile permettant de créer une perte de pression variable, et des moyens de réglage de cette perte de pression à la valeur de consigne, coopérant avec ledit organe de réglage par l'intermédiaire d'une première enceinte débouchant sur l'organe de réglage mobile et pouvant être mise en communication, soit avec la sortie, soit avec l'entrée de fluide, en fonction de la valeur* effective de la différence de pression entre l'entrée et la sortie par rapport à la valeur de consi¬ gne.According to one embodiment of the invention, the self-regulating means comprise, placed on a fluid conduit, between the inlet and the outlet, a movable adjustment member making it possible to create a variable pressure loss, and means for adjusting this pressure loss to the set value, cooperating with said adjusting member by means of a first enclosure opening onto the movable adjusting member and capable of being placed in communication, either with the outlet or with the fluid inlet, as a function of the actual value * of the pressure difference between the inlet and the outlet with respect to the set value.
D'autres particularités et avantages de l'inven- tion apparaîtront au cours de la description qui va suivre, faite en référence aux dessins annexés qui en illustrent deux formes de réalisation à titre d'exemples non limitatifs. La figure 1 est une vue schématique d'une pre¬ mière forme de réalisation du dispositif de régulation du débit d'un fluide conforme à l'invention.Other particular features and advantages of the invention will become apparent during the description which follows, given with reference to the appended drawings which illustrate two embodiments thereof by way of nonlimiting examples. Figure 1 is a schematic view of a first embodiment of the device for regulating the flow of a fluid according to the invention.
La figure 2 est une vue en élévation partielle d'une seconde forme d'exécution du dispositif visé par 1 'invention.Figure 2 is a partial elevational view of a second embodiment of the device covered by one invention.
Le dispositif représenté à la Fig.l constitue un circuit de fluide pouvant faire partie d'un réseau de distribution comportant un ensemble de tels circuits, par exemple de chauffage central .The device shown in Fig.l constitutes a fluid circuit that can be part of a distribution network comprising a set of such circuits, for example central heating.
Ce circuit comprend un conduit principal 1 dans lequel le fluide circule dans le sens indiqué par les flèches FI et F2.This circuit comprises a main conduit 1 in which the fluid circulates in the direction indicated by the arrows FI and F2.
Ce dispositif comprend, placé sur le conduit 1 entre une entrée A et une sortie B de fluide, un organe de réglage mobile 2 constitué par une membrane souple 3 équipée d'un pointeau 4. La membrane souple 3 est fixée intérieurement à une pièce tubulaire 5 débouchant dans la conduite 1 entre l'entrée A et la sortie B, le poin- teau 4 étant positionné en regard d'un étranglement 6 ménagé dans une cloison intérieure 7 de la conduite 1.This device comprises, placed on the conduit 1 between an inlet A and an outlet B of fluid, a movable adjustment member 2 constituted by a flexible membrane 3 equipped with a needle 4. The flexible membrane 3 is fixed internally to a tubular part 5 opening into the pipe 1 between the inlet A and the outlet B, the post 4 being positioned opposite a constriction 6 formed in an internal partition 7 of the pipe 1.
Le pointeau 4 et l'étranglement 6 sont dimen- sionnés de manière que ce dernier puisse être obturé partiellement ou totalement par le pointeau 4, poussé par la membrane 3, si la pression exercée sur la face de celle-ci opposée au pointeau 4 est suffisante.The needle 4 and the throttle 6 are dimensioned so that the latter can be closed partially or completely by the needle 4, pushed by the membrane 3, if the pressure exerted on the face of the latter opposite the needle 4 is sufficient.
La pièce tubulaire 5 délimite une première enceinte 8 fermée d'un côté par la membrane 3 et de l'autre par un fond 9, et qui communique par une canali- sation 11 avec le conduit 1 au niveau de la sortie B de fluide. La première enceinte 8 se prolonge par une se¬ conde enceinte 12, avec laquelle elle communique par un passage étranglé 13 formant orifice de fuite, traversé par une tige 14. Une extrémité de cette dernière est fixée à une membrane souple 15 dont le pourtour est lui- même fixé intérieurement à la paroi de la seconde en¬ ceinte 12. Cette dernière est ainsi divisée en un pre- mier compartiment 12a, contenant une partie de la tige 14, et un second compartiment 12b, contenant un organe élastique 16 de tarage de la différence de pression de fluide entre l'entrée A et la sortie B. Cet organe élas¬ tique peut être par exemple, comme représenté, un res- sort hélicoïdal 16 comprimé entre la membrane souple 15 et une vis 17 de réglage, traversant le fond du compar¬ timent 12b.The tubular part 5 delimits a first enclosure 8 closed on one side by the membrane 3 and on the other by a bottom 9, and which communicates by a pipe 11 with the conduit 1 at the level of the fluid outlet B. The first enclosure 8 is extended by a second enclosure 12, with which it communicates by a constricted passage 13 forming a leak orifice, traversed by a rod 14. One end of the latter is fixed to a flexible membrane 15 the periphery of which is itself internally fixed to the wall of the second enclosure 12. The latter is thus divided into a first compartment 12a, containing a part of the rod 14, and a second compartment 12b, containing an elastic member 16 for calibrating the difference in fluid pressure between the inlet A and the outlet B. This elastic member may for example be as shown , a helical spring 16 compressed between the flexible membrane 15 and a screw 17 for adjustment, crossing the bottom of the compar¬ timent 12b.
L'extrémité de la tige 14 opposée à la membrane 15 porte un pointeau 18 susceptible d'obturer l'entrée de la dérivation constituée par la canalisation 11, lorsque la pression dans le compartiment 12b est suffi¬ sante. La tige 14 porte un second pointeau 19, posi¬ tionné en regard du passage 13 afin de pouvoir l'obturer lorsque la pression dans l'enceinte 8 est suffisante, le pointeau 18 étant alors écarté de l'entrée de la canali¬ sation 11 ainsi mise en communication avec l'enceinte 8.The end of the rod 14 opposite the membrane 15 carries a needle 18 capable of closing the inlet of the bypass formed by the pipe 11, when the pressure in the compartment 12b is sufficient. The rod 14 carries a second needle 19, positioned opposite the passage 13 so as to be able to close it when the pressure in the enclosure 8 is sufficient, the needle 18 then being moved away from the inlet of the canalization 11 thus put in communication with the enclosure 8.
Le second compartiment 12b, dans lequel est placé le ressort de tarage 16, communique par une cana¬ lisation 21 avec le conduit 1 au niveau de la sortie B de fluide, tandis que le premier compartiment 12a de l'enceinte 12 communique par une canalisation 22 avec l'entrée A de fluide.The second compartment 12b, in which the calibration spring 16 is placed, communicates by a pipe 21 with the conduit 1 at the outlet B of fluid, while the first compartment 12a of the enclosure 12 communicates by a pipe 22 with fluid inlet A.
Le fonctionnement du dispositif de régulation automatique qui vient d'être décrit est le suivant. La valeur de la perte de pression entre l'entréeThe operation of the automatic regulation device which has just been described is as follows. The value of the pressure loss between the inlet
A et la sortie B est fixée par le tarage du ressort 16 au moyen de la vis 17. Cette vis peut éventuellement être supprimée, si le ressort 16 est prévu taré de cons- truction, à une valeur fixe.A and the outlet B is fixed by the calibration of the spring 16 by means of the screw 17. This screw can optionally be removed, if the spring 16 is provided tared cons- truction, at a fixed value.
La différence de pression entre A et B peut être considérée comme égale à la valeur de tarage du ressort 16. La prise de pression en A est alors transmise au compartiment 12a de l'enceinte 12, et cette pression comprime la membrane 15. La pression à la sortie B, inférieure à la pression en A, est transmise au premier compartiment 12b de l'enceinte 12 par la canalisation 21, et appuie sur l'autre face de la membrane 15. La pression dans le compartiment 12b vient ainsi, grâce au complément fourni par la pression du ressort 16, équili¬ brée la pression A régnant dans le compartiment 12a. De ce fait, le pointeau terminal 18 de la tige-guide 14 solidaire de la membrane 15, vient obturer l'orifice d'entrée de la canalisation 11.The pressure difference between A and B can be considered equal to the calibration value of the spring 16. The pressure tap at A is then transmitted to the compartment 12a of the enclosure 12, and this pressure compresses the membrane 15. The pressure at the outlet B, lower than the pressure at A, is transmitted to the first compartment 12b of the enclosure 12 by the pipe 21, and presses on the other face of the membrane 15. The pressure in the compartment 12b thus comes, thanks to the complement provided by the pressure of the spring 16, the pressure A prevails in the compartment 12a. As a result, the end needle 18 of the guide rod 14 secured to the membrane 15, closes the inlet orifice of the pipe 11.
Dans cette position, le pointeau 19 contigu à l'orifice de fuite 13, libère ce dernier comme repré¬ senté à la Fig.l, ce qui permet l'équilibre des pres¬ sions entre A et le compartiment 12a d'une part, et l'enceinte 8 d'autre part. Il en résulte une compression de la membrane 3, dont le pointeau 4 vient obturer l'é¬ tranglement 6 de l'organe de réglage 2.In this position, the needle 19 contiguous to the leakage orifice 13, releases the latter as shown in FIG. 1, which allows the pressure to be balanced between A and the compartment 12a on the one hand, and enclosure 8 on the other hand. This results in compression of the membrane 3, the needle 4 of which closes the throttle 6 of the adjusting member 2.
Si la différence de pression de fluide entre A et B diminue, rien ne se produit, car, à ce moment, la pression B dans le compartiment 12b, majorée de la pres- sion exercée par le ressort 16, est supérieure à la pression en A et dans le compartiment 12a, de sorte que le pointeau 18 reste en position d'obturation de la canalisation de dérivation 11. Si au contraire, la différence de pression entreIf the difference in fluid pressure between A and B decreases, nothing happens, because, at this time, the pressure B in the compartment 12b, increased by the pressure exerted by the spring 16, is greater than the pressure in A and in compartment 12a, so that the needle 18 remains in the closed position of the bypass pipe 11. If, on the contrary, the pressure difference between
A et B augmente, la pression A va devenir supérieure à la somme des pressions en B et du ressort 16, de sorte que la membrane 15 se déplacera dans le sens qui corn- prime le ressort 16. Cette compression a pour effet de déplacer la tige- uide 14 dans le sens qui éloigne le pointeau 18 de l'entrée de la canalisation 11 ainsi mise en communication avec l'enceinte 8, tandis que le poin- teau 19 vient obturer l'orifice de fuite 13. A ce mo¬ ment, la pression dans l'enceinte 8 devient égale à la pression à la sortie B, ce qui libère la membrane 3 qui revient de sa position 3a rapprochée de l'étranglement 6 vers sa position 3, tandis que corrélativement le poin- teau 4 revient de sa position 4a dans laquelle il obture l'étranglement 6, jusqu'à sa position 4 dans laquelle il libère l'étranglement 6.A and B increases, the pressure A will become greater than the sum of the pressures at B and the spring 16, so that the membrane 15 will move in the direction which prime the spring 16. This compression has the effect of moving the fluid rod 14 in the direction which moves the needle 18 away from the inlet of the pipe 11 thus placed in communication with the enclosure 8, while the needle 19 closes the leak orifice 13. At this time, the pressure in the enclosure 8 becomes equal to the pressure at the outlet B, which releases the membrane 3 which returns from its position 3a close to the constriction 6 towards its position 3, while correspondingly the post 4 returns from its position 4a in which it closes the throttle 6, to its position 4 in which it releases the throttle 6.
Cette ouverture de l'étranglement 6 autorise la circulation du fluide à travers l'organe de réglage 2 ce qui diminue la différence de pression entre A et B. Lorsque la différence de pression a de nouveau atteint son point de consigne, déterminé par le tarage du res¬ sort 16, le dispositif se positionne à nouveau en équi¬ libre et ne laisse passer, par l'étranglement 6, que la quantité de fluide nécessaire au maintien de cet équili¬ bre.This opening of the throttle 6 allows the circulation of the fluid through the regulating member 2 which reduces the pressure difference between A and B. When the pressure difference has again reached its set point, determined by the calibration of the res¬ 16, the device is again positioned in equi¬ free and does not pass, through the throttle 6, that the amount of fluid required to maintain thisequili¬ bre.
Si la différence de pression recommence à dé¬ croître, le dispositif se referme, par obturation de l'étranglement 6 par le pointeau 4. La constance de la différence de pression entreIf the pressure difference begins to decrease again, the device closes again, by closing the throttle 6 with the needle 4. The constancy of the pressure difference between
A et B est toutefois limitée à une valeur égale à la perte de charge de l'organe de réglage 2 grand ouvert, et pour le débit de fluide maximum, correspondant à la valeur de perte de charge. Le dispositif selon l'invention peut être uti¬ lisé comme vanne de décharge progressive en pied de colonnes de chauffage, en vanne de décharge progressive de pompe ou en vanne de dérivation ("by-pass" ) de cir- cuit régulé, cette énumération n'étant pas limitative. On notera que ce dispositif fonctionne sans apport d'é¬ nergie extérieure, grâce à l'énergie du fluide régulé.A and B is however limited to a value equal to the pressure drop of the regulating member 2 wide open, and for the maximum fluid flow rate, corresponding to the pressure drop value. The device according to the invention can be used as a progressive discharge valve at the foot of heating columns, as a progressive pump discharge valve or as a by-pass valve ("by-pass"). cooked regulated, this list is not exhaustive. It will be noted that this device operates without the addition of external energy, thanks to the energy of the regulated fluid.
Dans la seconde forme d'exécution représentée à la Fig.2, la membrane 3 ne porte plus de pointeau et vient obturer directement une pièce tubulaire 23, soli¬ daire du bord de l'étranglement 6 et de longueur appro¬ priée. In the second embodiment shown in Fig.2, the membrane 3 no longer carries a needle and directly closes a tubular part 23, soli¬ dary of the edge of the constriction 6 and appr¬ required length.

Claims

REVENDICATIONS
1. Dispositif de régulation du débit d'un fluide dans un réseau de distribution de fluide comprenant un ou plusieurs circuits ayant chacun une entrée (A) et une sortie (B) , caractérisé en ce qu'il comprend, entre l'entrée et la sortie, des moyens (2, 3, 4, 5, 12, 14.. ) d'autorégulation automatique adaptés pour maintenir constante la différence de pression de fluide entre l'entrée et la sortie, à une valeur de consigne prédé- terminée.1. Device for regulating the flow rate of a fluid in a fluid distribution network comprising one or more circuits each having an inlet (A) and an outlet (B), characterized in that it comprises, between the inlet and the output, means (2, 3, 4, 5, 12, 14 ..) of automatic self-regulation adapted to keep constant the difference in fluid pressure between the input and the output, at a predetermined set value .
2. Dispositif selon la revendication 1, caracté¬ risé en ce que les moyens d'autorégulation comprennent, placés sur un conduit (1) de fluide entre l'entrée (A) et la sortie (B), un organe (2) de réglage mobile per- mettant de créer une perte de pression variable, et des moyens de réglage de cette perte de pression à la valeur de consigne, coopérant avec ledit organe de réglage par l'intermédiaire d'une première enceinte (5) débouchant sur l'organe de réglage mobile et pouvant être mise en communication, soit avec la sortie (B), soit avec l'en¬ trée (A) de fluide en fonction de la valeur effective de la différence de pression entre l'entrée et la sortie par rapport à la valeur de consigne.2. Device according to claim 1, caracté¬ ized in that the self-regulation means comprise, placed on a conduit (1) of fluid between the inlet (A) and the outlet (B), a member (2) of mobile adjustment making it possible to create a variable pressure loss, and means for adjusting this pressure loss to the set value, cooperating with said adjustment member via a first enclosure (5) leading to the mobile adjustment device which can be placed in communication either with the outlet (B) or with the fluid inlet (A) as a function of the effective value of the pressure difference between the inlet and the outlet relative to the setpoint.
3. Dispositif selon la revendication 2, caracté- risé en ce que la première enceinte (5) est limitée, du côté de l'organe de réglage mobile (2), par une membrane souple (3) pouvant obturer le conduit (1) de fluide lorsque la pression dans ladite enceinte est suffisante, et ce dispositif comprend une seconde enceinte (12) communiquant avec la première et contenant une membrane souple (15) divisant ladite seconde enceinte en deux compartiments (12a, 12b), munie d'une tige (14) travei— sant un passage (13) entre les deux enceintes, l'extré- mité de cette tige portant un pointeau (18) susceptible d'obturer une dérivation (11) reliant la première en¬ ceinte (5) à la sortie (B) de fluide, et la seconde enceinte contient un organe élastique (16) agissant sur la membrane (15) pour maintenir le pointeau (18) dans sa position d'obturation de la dérivation lorsque la diffé¬ rence de pression du fluide entre l'entrée et la sortie est égale ou inférieure à la valeur de consigne à la¬ quelle est réglé ledit organe élastique, et pour écarter le pointeau (18) de sa position d'obturation lorsque cette différence de pression est supérieure à la valeur de consigne.3. Device according to claim 2, characterized in that the first enclosure (5) is limited, on the side of the movable adjustment member (2), by a flexible membrane (3) capable of sealing the conduit (1) fluid when the pressure in said enclosure is sufficient, and this device comprises a second enclosure (12) communicating with the first and containing a flexible membrane (15) dividing said second enclosure into two compartments (12a, 12b), provided with a rod (14) passing through a passage (13) between the two enclosures, the end mite of this rod carrying a needle (18) capable of closing a bypass (11) connecting the first enclosure (5) to the outlet (B) of fluid, and the second enclosure contains an elastic member (16) acting on the membrane (15) to maintain the needle (18) in its position for closing the bypass when the pressure difference of the fluid between the inlet and the outlet is equal to or less than the set value at which said elastic member is adjusted, and to move the needle (18) from its closed position when this pressure difference is greater than the set value.
4. Dispositif selon la revendciation 3, caracté¬ risé en ce que la tige (14) est pourvue d'un second pointeau (19) positionné pour obturer le passage (13) entre la première enceinte (5) et un premier comparti¬ ment (12a) de la seconde enceinte (12), lorsque le pre¬ mier pointeau est dans sa position d'ouverture de la dérivation associée. 4. Device as claimed in claim 3, characterized in that the rod (14) is provided with a second needle (19) positioned to close the passage (13) between the first enclosure (5) and a first compartment. (12a) of the second enclosure (12), when the first needle is in its open position of the associated branch.
5. Dispositif selon la revendication 4, caracté¬ risé en ce que l'organe élastique (16) est disposé dans le second compartiment (12b) de la seconde enceinte (12) situé à l'opposé du passage (13) de communication entre les deux enceintes (5, 12) qui relie le premier compar- timent (12a) à la première enceinte, cet organe élasti¬ que pouvant être un ressort taré à une valeur préréglée ou tarable à une valeur de consigne.5. Device according to claim 4, caracté¬ ized in that the elastic member (16) is disposed in the second compartment (12b ) of the second enclosure (12) located opposite the passage (13) of communication between the two enclosures (5, 12) which connect the first compartment (12a) to the first enclosure, this elastic member being able to be a spring calibrated to a preset value or tarable to a set value.
6. Dispositif selon l'une des revendications 3 à 5, caractérisé en ce que ledit premier compartiment (12a) de la seconde enceinte (12) débouche dans une canalisation (22) de liaison avec l'entrée (A) de flui¬ de.6. Device according to one of claims 3 to 5, characterized in that said first compartment (12a) of the second enclosure (12) opens into a pipe (22) connecting with the inlet (A) of flui¬ de .
7. Dispositif selon la revendication 6, caracté- risé en ce que le second compartiment (12b) de la se¬ conde enceinte (12) est relié à la sortie (B) par une canalisation (21) de fluide, et la première enceinte (5) est également reliée par une canalisation (11) à la sortie du fluide.7. Device according to claim 6, character- laughed in that the second compartment (12b) of the second enclosure (12) is connected to the outlet (B) by a pipe (21) of fluid, and the first enclosure (5) is also connected by a pipe ( 11) at the outlet of the fluid.
8. Dispositif selon l'une des revendications 3 à 7, caractérisé en ce que la membrane souple (3) est équipée d'un élément d'obturation constitué par un poin¬ teau (4) apte à obturer un étranglement (6) de passage du fluide, ménagé dans une cloison intérieure (7) du conduit (1) de fluide séparant l'entrée (A) et la sortie (B).8. Device according to one of claims 3 to 7, characterized in that the flexible membrane (3) is equipped with a sealing element constituted by a poin¬ sheet (4) capable of closing a throttle (6) of passage of the fluid, formed in an interior partition (7) of the conduit (1) of fluid separating the inlet (A) and the outlet (B).
9. Dispositif selon l'une des revendications 3 à 7, caractérisé en ce que la membrane souple (3) peut obturer directement une pièce tubulaire (23) solidaire du bord d'un étranglement (6) de passage du fluide, ménagé dans une cloison intérieure (7) du conduit (1) de fluide séparant l'entrée (A) et la sortie (B), cette pièce tubulaire ayant une longueur appropriée. 9. Device according to one of claims 3 to 7, characterized in that the flexible membrane (3) can directly close a tubular part (23) integral with the edge of a constriction (6) for passage of the fluid, formed in a internal partition (7) of the fluid conduit (1) separating the inlet (A) and the outlet (B), this tubular part having an appropriate length.
PCT/FR1992/000340 1991-04-17 1992-04-15 Device for regulating the flow rate of a fluid in a fluid distribution network WO1992018921A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9104726A FR2675598A1 (en) 1991-04-17 1991-04-17 DEVICE FOR REGULATING THE FLOW OF A FLUID IN A FLUID DISTRIBUTION NETWORK.
FR91/04726 1991-04-17

Publications (1)

Publication Number Publication Date
WO1992018921A1 true WO1992018921A1 (en) 1992-10-29

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Application Number Title Priority Date Filing Date
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Country Status (4)

Country Link
EP (1) EP0580731A1 (en)
AU (1) AU1691092A (en)
FR (1) FR2675598A1 (en)
WO (1) WO1992018921A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2701306A1 (en) * 1993-02-05 1994-08-12 Comap Fluid distribution network with regulating device.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE521082C2 (en) * 2002-01-28 2003-09-30 Tour & Andersson Ab Device for regulating differential pressure in heating and cooling systems

Citations (6)

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Publication number Priority date Publication date Assignee Title
DE645056C (en) * 1935-03-14 1937-05-20 Naamlooze Vennootschap Machine Gas pressure regulator with special control regulator
DE1523291A1 (en) * 1966-12-10 1969-03-13 Helmut Baelz Ges F Patentverwe Pressure or overflow regulator without auxiliary energy
DE2143389A1 (en) * 1971-08-30 1973-03-08 Samson Apparatebau Ag REGULATORS WITHOUT AUXILIARY FORCE, IN PARTICULAR PRESSURE REGULATORS FOR HEATING SYSTEMS
DE2947216A1 (en) * 1979-11-23 1981-06-04 Regel + Meßtechnik GmbH Regler- und Anlagenbau für Gas-Druckregelung, 3500 Kassel Gas flow regulator - uses diaphragm control stages responsive to pressure difference and static line pressure
DE3302514A1 (en) * 1983-01-26 1984-07-26 Honeywell-Braukmann GmbH, 6950 Mosbach Device for controlling a pressure regulator
GB2231126A (en) * 1989-03-07 1990-11-07 Carraro S R L Diaphragm valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE645056C (en) * 1935-03-14 1937-05-20 Naamlooze Vennootschap Machine Gas pressure regulator with special control regulator
DE1523291A1 (en) * 1966-12-10 1969-03-13 Helmut Baelz Ges F Patentverwe Pressure or overflow regulator without auxiliary energy
DE2143389A1 (en) * 1971-08-30 1973-03-08 Samson Apparatebau Ag REGULATORS WITHOUT AUXILIARY FORCE, IN PARTICULAR PRESSURE REGULATORS FOR HEATING SYSTEMS
DE2947216A1 (en) * 1979-11-23 1981-06-04 Regel + Meßtechnik GmbH Regler- und Anlagenbau für Gas-Druckregelung, 3500 Kassel Gas flow regulator - uses diaphragm control stages responsive to pressure difference and static line pressure
DE3302514A1 (en) * 1983-01-26 1984-07-26 Honeywell-Braukmann GmbH, 6950 Mosbach Device for controlling a pressure regulator
GB2231126A (en) * 1989-03-07 1990-11-07 Carraro S R L Diaphragm valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2701306A1 (en) * 1993-02-05 1994-08-12 Comap Fluid distribution network with regulating device.
EP0615099A1 (en) * 1993-02-05 1994-09-14 Comap Fluid distribution network with controller

Also Published As

Publication number Publication date
EP0580731A1 (en) 1994-02-02
AU1691092A (en) 1992-11-17
FR2675598A1 (en) 1992-10-23

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