FR2763394A1 - Leak-detecting device for liquid supply system - Google Patents

Leak-detecting device for liquid supply system Download PDF

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Publication number
FR2763394A1
FR2763394A1 FR9706223A FR9706223A FR2763394A1 FR 2763394 A1 FR2763394 A1 FR 2763394A1 FR 9706223 A FR9706223 A FR 9706223A FR 9706223 A FR9706223 A FR 9706223A FR 2763394 A1 FR2763394 A1 FR 2763394A1
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pipe
probe
leak
meter
installation
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FR9706223A
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French (fr)
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FR2763394B1 (en
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Noel Salichon
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The device uses a U-shaped pipe (7) which has both ends teed into the main supply pipe (3) upstream of a meter (2) and which is measuring consumption to a user or users. A section (11) of the U shaped pipe is made from transparent plastic and contains a float (19). A probe (16) comprising a thin tube runs inside the pipework from the meter (2) to a nozzle (19) within a flow measuring valve (9) and gauge (17) at the top of the transparent section (11). If the installation being examined has a leak, water passes from the meter (2) along the tube (16) and through the nozzle (18) displacing the float (19) which becomes visible.

Description

Dispositif de détection de fuite dans une installation d'alimentation de fluide liquide. Leak detection device in a liquid fluid supply installation.

La distribution d'eau notamment aux particuliers aussi bien dans les immeubles collectifs que dans les habitations individuelles s'opère à partir du réseau communal par des canalisations dérivées en direction d'un compteur, puis de là, dans l'habitation elle-même par d'autres canalisations. The distribution of water in particular to individuals in both apartment buildings and in individual dwellings is carried out from the municipal network by pipelines diverted towards a meter, then from there to the dwelling itself by other pipes.

Il peut arriver que des fuites se produisent dans ce circuit entre le compteur et les points d'alimentation, sans que l'utilisateur ne s'en aperçoive autrement que par examen attentif du compteur, qui en cas de fuite, et en dehors de tout puisage d'eau, tourne plus ou moins selon l'importance de la fuite. It may happen that leaks occur in this circuit between the meter and the supply points, without the user noticing it except by careful examination of the meter, which in the event of a leak, and out of everything drawing water, turns more or less depending on the extent of the leak.

Le plus souvent, les compteurs sont soit logés dans des placards extérieurs (habitats collectifs) soit enterrés en limite de propriété (habitats individuels), ce qui, on le conçoit ne facilite par le contrôle des fuites éventuelles. Most often, the meters are either housed in outdoor closets (collective housing) or buried at the edge of the property (individual housing), which, we understand, does not facilitate the control of any leaks.

Or, une fuite même minime dans l'installation, peut prendre des proportions importantes au niveau dégâts lorsqu'on ne la détecte pas rapidement. De plus, le m3 d'eau atteint aujourd'hui un prix prohibitif du fait des différents paramètres entrant dans sa composition (assainissement, taxes ) et il est donc primordial non seulement de l'économiser, mais aussi d'éviter toute surconsommation à cause de fuites. However, even a small leak in the installation, can take on significant proportions in terms of damage when it is not detected quickly. In addition, the m3 of water today reaches a prohibitive price because of the various parameters entering into its composition (sanitation, taxes) and it is therefore essential not only to save it, but also to avoid any overconsumption because leaks.

Partant de ces constatations, on a voulu selon l'invention offrir aux utilisateurs un moyen simple, rationnel et rapide de contrôle des fuites éventuelles. On the basis of these observations, it was intended according to the invention to offer users a simple, rational and rapid means of checking possible leaks.

Pour cela, et selon une première caractéristique, le dispositif de détection de fuite de fluide est constitué essentiellement par une canalisation montée en dérivation de la canalisation principale de l'installation en amont d'un compteur; ladite canalisation étant équipée d'un organe de contrôle visuel de fuite agissant en relation avec une sonde raccordée au compteur. For this, and according to a first characteristic, the fluid leak detection device consists essentially of a pipe mounted as a bypass of the main pipe of the installation upstream of a meter; said pipe being equipped with a visual leakage control member acting in relation to a probe connected to the meter.

Selon une autre caractéristique, l'organe de contrôle visuel de fuite est constitué par un flotteur libre et judicieusement déterminé pour se déplacer de haut en bas le long d'une zone transparente de la canalisation dérivée sous l'action de la sonde de détection, cela lorsqu'une fuite apparaît dans l'installation provoquant le passage de fluide dans la sonde et dans ladite canalisation dérivée. According to another characteristic, the visual leakage control member is constituted by a free float and judiciously determined to move up and down along a transparent area of the branched pipe under the action of the detection probe, this when a leak appears in the installation causing the passage of fluid in the probe and in said branch pipe.

Ces caractéristiques et d'autres encore ressortiront de la description qui suit. These characteristics and others will emerge from the description which follows.

Pour fixer l'objet de l'invention sans toutefois le limiter, dans les dessins annexés. To set the subject of the invention without however limiting it, in the accompanying drawings.

la figure 1 est une vue générale schématique montrant le dispositif selon l'invention intégré dans une installation de distribution d'eau. Figure 1 is a general schematic view showing the device according to the invention integrated in a water distribution installation.

La figure 2 est vue partielle en coupe illustrant les principaux éléments du dispositif selon l'invention. Figure 2 is a partial sectional view illustrating the main elements of the device according to the invention.

La figure 3 est une vue partielle en coupe montrant le déplacement du flotteur sous l'effet d'une fuite. Figure 3 is a partial sectional view showing the movement of the float under the effect of a leak.

Afin de rendre plus concret l'objet de l'invention, on le décrit maintenant sous une forme non limitative de réalisation illustrée aux figures des dessins. In order to make the object of the invention more concrete, it is now described in a nonlimiting embodiment illustrated in the figures of the drawings.

A la figure 1, on voit l'installation de distribution d'eau comprenant de manière connue une canalisation (1) en provenance du réseau communal et se raccordant à un compteur (2), avec robinet de fermeture (6). En amont, le compteur est raccordé à la canalisation principale (3) d'alimentation des différents points de distribution et sur laquelle sont disposés éventuellement des organes tels que clapet antipollution (4), anti- coup de bélier (5).  In Figure 1, we see the water distribution installation comprising in known manner a pipe (1) from the municipal network and connecting to a meter (2), with shut-off valve (6). Upstream, the meter is connected to the main pipe (3) supplying the various distribution points and on which are possibly arranged members such as anti-pollution valve (4), water hammer (5).

Le dispositif (D) selon l'invention est interposé sur la canalisation principale (3) en amont du compteur, en un point aisément et parfaitement visible pour l'utilisateur. Par exemple, le dispositif peut être disposé dans une cuisine dans le cas d'un immeuble collectif ou bien au sous-sol, dans un garage notamment, dans le cas d'une habitation individuelle. The device (D) according to the invention is interposed on the main pipe (3) upstream of the meter, at a point easily and perfectly visible to the user. For example, the device can be arranged in a kitchen in the case of a collective building or else in the basement, in a garage in particular, in the case of an individual dwelling.

Le dispositif est constitué d'une canalisation dérivée (7) comprenant successivement et à titre d'exemple d'aval en amont: un tube de départ (8) muni d'un clapet (9) de mesure du flux et d'un raccord (10) sur lequel se raccorde de manière étanche un tube réalisé en matière plastique transparente (11) ou autre, relié à l'autre extrémité, également de manière étanche à un deuxième raccord (12) sur lequel est fixé un tube coudé de retour (13) qui est relié à la canalisation principale (3) par un troisième raccord (14) et un tube terminal (15)
Bien entendu, cette configuration de la dérivation peut être différente, sans pour cela sortir du cadre de l'invention.The device consists of a branch pipe (7) comprising successively and as an example downstream upstream: a starting tube (8) provided with a valve (9) for measuring the flow and a connector (10) to which a tube made of transparent plastic material (11) or the like is connected in leaktight manner, connected at the other end, also in leaktight manner to a second connector (12) to which a bent return tube is fixed (13) which is connected to the main pipeline (3) by a third fitting (14) and an end tube (15)
Of course, this configuration of the derivation may be different, without thereby departing from the scope of the invention.

Une sonde (16), sous la forme d'un fin tuyau en matière plastique de qualité alimentaire, est logée dans la canalisation principale (3) au niveau du compteur, et passe à travers le clapet (9) et le raccord (10) et débouche au niveau d'une jauge (17) intégrée au raccord (8) en étant reliée à une buse (18). A probe (16), in the form of a thin pipe made of food-grade plastic, is housed in the main pipe (3) at the level of the meter, and passes through the valve (9) and the connector (10). and opens out at a gauge (17) integrated into the fitting (8) by being connected to a nozzle (18).

Dans le tube transparent (11) situé entre les deux raccords (8 et 12), est disposé un flotteur libre (19) qui, lorsque ledit tube (11) est empli d'eau, est en contact avec la buse (18) et caché au-dessus du tube (11). Ce flotteur est judicieusement calculé en poids et dimensions en fonction du diamètre intérieur de la sonde et du diamètre de la buse, de telle sorte que la sensibilité du mécanisme soit très proche de celle du compteur. In the transparent tube (11) located between the two connectors (8 and 12), is disposed a free float (19) which, when said tube (11) is filled with water, is in contact with the nozzle (18) and hidden above the tube (11). This float is judiciously calculated in weight and dimensions as a function of the inside diameter of the probe and the diameter of the nozzle, so that the sensitivity of the mechanism is very close to that of the counter.

En cas de fuite dans l'installation, et en dehors de tout puisage d'eau, la sonde (16) se remplit d'eau, laquelle par l'intermédiaire de la buse (18), pousse le flotteur (19) vers le bas dans le tube transparent, cela plus ou moins selon l'importance de la fuite, permettant ainsi de détecter et de visualiser rapidement la fuite sans aucune manipulation fastidieuse. In the event of a leak in the installation, and apart from any drawing of water, the probe (16) fills with water, which via the nozzle (18) pushes the float (19) towards the low in the transparent tube, more or less depending on the size of the leak, thus making it possible to quickly detect and visualize the leak without any tedious manipulation.

Il n'est pas exclu que le dispositif selon l'invention soit intégré au compteur lui-même si celui-ci est placé en un endroit aisément accessible. It is not excluded that the device according to the invention is integrated into the meter itself if the latter is placed in an easily accessible location.

D'autre part, on peut concevoir et adapter un dispositif semblable pour d'autres fluides liquides, par exemple dans des laiteries, dans les circuits de refroidissement des machines-outils, dans des distilleries......  On the other hand, a similar device can be designed and adapted for other liquid fluids, for example in dairies, in the cooling circuits of machine tools, in distilleries ...

Claims (5)

REVENDICATIONS - 1 - Dispositif de détection de fuite dans une installation d'alimentation de fluide liquide, caractérisé en ce qu'il est constitué essentiellement par une canalisation (7) montée en dérivation de la canalisation principale (3) de l'installation en amont d'un compteur (2); ladite canalisation (7) étant équipée d'un organe de contrôle visuel (19) de fuite agissant en relation avec une sonde de détection (16) raccordée au compteur. - 1 - Leak detection device in a liquid fluid supply installation, characterized in that it consists essentially of a pipe (7) mounted as a bypass of the main pipe (3) of the installation upstream of 'a counter (2); said pipe (7) being equipped with a visual control member (19) for leakage acting in relation to a detection probe (16) connected to the meter. -2- Dispositif selon la revendication 1, caractérisé en ce que l'organe de contrôle visuel de fuite est constitué par un flotteur libre (19) judicieusement déterminé pour se déplacer de haut en bas le long d'une zone transparente (11) de la canalisation dérivée (7) sous l'action de la sonde de détection (16), cela lorsqu'une fuite, même minime, apparaît dans l'installation provoquant le passage du fluide dans la sonde et ladite canalisation dérivée. -2- Device according to claim 1, characterized in that the visual leakage control member consists of a free float (19) judiciously determined to move up and down along a transparent area (11) of the branch pipe (7) under the action of the detection probe (16), this when a leak, even a small one, appears in the installation causing the passage of the fluid in the probe and said branch pipe. -3- Dispositif selon la revendication 2, caractérisé en ce que la zone transparente de lecture est constituée par un tube en matière plastique ou autre transparente, relié de manière étanche à deux raccords (10-12) de la canalisation dérivée (7). -3- Device according to claim 2, characterized in that the transparent reading zone is constituted by a plastic or other transparent tube, tightly connected to two fittings (10-12) of the branch pipe (7). -4- Dispositif selon la revendication 3, caractérisé en ce que le raccord (10) de liaison avec le tube transparent (11) est équipé d'un clapet (9) de mesure du flux, d'une jauge (17), et reçoit l'extrémité de la sonde (16) agencée avec une buse (18). -4- Device according to claim 3, characterized in that the connector (10) for connection with the transparent tube (11) is equipped with a valve (9) for measuring the flow, a gauge (17), and receives the end of the probe (16) arranged with a nozzle (18). -5- Dispositif selon la revendication 4, caractérisé en ce que la sonde (16) est réalisée sous la forme d'un fin tuyau en matière plastique alimentaire.  -5- Device according to claim 4, characterized in that the probe (16) is made in the form of a thin pipe of food plastic.
FR9706223A 1997-05-15 1997-05-15 LEAK DETECTION DEVICE IN A LIQUID FLUID SUPPLY SYSTEM Expired - Fee Related FR2763394B1 (en)

Priority Applications (1)

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FR9706223A FR2763394B1 (en) 1997-05-15 1997-05-15 LEAK DETECTION DEVICE IN A LIQUID FLUID SUPPLY SYSTEM

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Application Number Priority Date Filing Date Title
FR9706223A FR2763394B1 (en) 1997-05-15 1997-05-15 LEAK DETECTION DEVICE IN A LIQUID FLUID SUPPLY SYSTEM

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FR2763394A1 true FR2763394A1 (en) 1998-11-20
FR2763394B1 FR2763394B1 (en) 1999-06-25

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2389417A (en) * 2002-06-07 2003-12-10 Leonard O'hara A detector/indicator for an insulated water pipe which indicates the presence of water under the insulation
CN103439065A (en) * 2013-08-28 2013-12-11 博益(天津)气动技术研究所有限公司 Device for conducting positive pressure leaked-hole calibration on U-shaped capillary tube
CN105527171A (en) * 2016-01-13 2016-04-27 兰州兰石重型装备股份有限公司 Tooling for U-shaped pipe hydrostatic test and using method of tooling

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1573746A1 (en) * 1964-11-16 1970-04-16 Puregas Equipment Corp Method and device for determining a leak in a system through which a flow device flows
WO1990006497A1 (en) * 1988-12-06 1990-06-14 Ackulab Ab Method and apparatus for testing fluid distribution systems for leakage
US5269171A (en) * 1992-04-15 1993-12-14 Ferrellgas, Inc. Propane gas leak detection

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1573746A1 (en) * 1964-11-16 1970-04-16 Puregas Equipment Corp Method and device for determining a leak in a system through which a flow device flows
WO1990006497A1 (en) * 1988-12-06 1990-06-14 Ackulab Ab Method and apparatus for testing fluid distribution systems for leakage
US5269171A (en) * 1992-04-15 1993-12-14 Ferrellgas, Inc. Propane gas leak detection

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2389417A (en) * 2002-06-07 2003-12-10 Leonard O'hara A detector/indicator for an insulated water pipe which indicates the presence of water under the insulation
GB2389417B (en) * 2002-06-07 2005-11-09 Leonard O'hara Water under insulation indicator
CN103439065A (en) * 2013-08-28 2013-12-11 博益(天津)气动技术研究所有限公司 Device for conducting positive pressure leaked-hole calibration on U-shaped capillary tube
CN105527171A (en) * 2016-01-13 2016-04-27 兰州兰石重型装备股份有限公司 Tooling for U-shaped pipe hydrostatic test and using method of tooling

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Publication number Publication date
FR2763394B1 (en) 1999-06-25

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