FR2546600A1 - Automatic retention valve for protecting a fluid meter - Google Patents

Automatic retention valve for protecting a fluid meter Download PDF

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Publication number
FR2546600A1
FR2546600A1 FR8401179A FR8401179A FR2546600A1 FR 2546600 A1 FR2546600 A1 FR 2546600A1 FR 8401179 A FR8401179 A FR 8401179A FR 8401179 A FR8401179 A FR 8401179A FR 2546600 A1 FR2546600 A1 FR 2546600A1
Authority
FR
France
Prior art keywords
meter
valve
check valve
protecting
retention valve
Prior art date
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.)
Withdrawn
Application number
FR8401179A
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French (fr)
Inventor
Lorenzo Franceschini
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.)
ZACCHI SpA
Original Assignee
ZACCHI SpA
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 ZACCHI SpA filed Critical ZACCHI SpA
Publication of FR2546600A1 publication Critical patent/FR2546600A1/en
Withdrawn legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00Check valves
    • F16K15/02Check valves with guided rigid valve members
    • F16K15/025Check valves with guided rigid valve members the valve being loaded by a spring
    • F16K15/026Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Measuring Volume Flow (AREA)
  • Lubricants (AREA)
  • Prostheses (AREA)
  • Jellies, Jams, And Syrups (AREA)

Abstract

Automatic retention valve 7 for fluids, intended to protect the meter when it is traversed by the fluid at an excessive speed, this valve being elastically pushed against the seat 8 of a standard connector 1 provided between the duct and the casing 9 of the meter.

Description

On sait que de nombreuses installations de distribution d'eau potable subissent assez frdquemment des interruptions de service, ce qui a pour effet de vider l'installation. It is known that many drinking water distribution systems experience service interruptions quite frequently, which has the effect of emptying the installation.

Le rétablissement ultérieur des conditions normales de fonctionnement dans l'installation soumet très souvent les comp- teurs fi des efforts importants - provoqués par le passage de l'air qui a pénétré dans l'installation pendant que les condui- tes etaient vides - qui se manifestent en l'absence de l'effet de refroidissement/lubrification de l'eau. The subsequent reestablishment of normal operating conditions in the installation very often subjects the counters to great efforts - caused by the passage of air which entered the installation while the pipes were empty - which becomes manifest in the absence of the cooling / lubrication effect of water.

Dans de telles situations, on assiste très fréquemment a 1'endommagement des organes qui tournent plus rapidement dans le compteur, par "fusion't des supports de ces organes, ordinairement en matière plastique. In such situations, very frequently the organs which rotate more rapidly in the counter are damaged by "fusion" of the supports of these organs, usually made of plastic.

On peut remédier très facilement a cet inconvénient en insérant dans l'installation une soupape de retenue qui empêche le vidage de la canalisation dans laquelle le compteur est intercalé. Nais, dans leur quasi totalit, les installations ne permettent pas la mise en place facile et aisée, a un coût accessible, d'une soupape a corps indépendant, pour l'installation de laquelle il peut même être nécessaire d'effectuer des travaux de maçonnerie. This drawback can be remedied very easily by inserting a check valve in the installation which prevents the emptying of the pipe in which the meter is inserted. Nais, in their almost totality, the installations do not allow the easy and easy installation, at an accessible cost, of a valve with independent body, for the installation of which it may even be necessary to carry out work of masonry.

Par conséquent, le fait d'avoir conçu et réalisé une soupape de retenue, contenue dans un raccord qui est parfaitement interchangeable avec les raccords UNI utilisés jusqu'ici pour l'installation des compteurs dans des réseaux, permet d'équiper le compteur de cet accessoire utile pour une dépense relativement modeste, tant en raison du prix non excessif de cette soupape, qui est de l'ordre de celui des soupapes actuel lement dans le commerce, qu'en raison de l'élimination de la necessité de devoir remanier les installations existantes. Consequently, the fact of having designed and produced a check valve, contained in a fitting which is perfectly interchangeable with the UNI fittings used until now for the installation of meters in networks, enables the meter to be fitted with this useful accessory for a relatively modest expense, both because of the non-excessive price of this valve, which is of the order of that of valves currently commercially available, and because of the elimination of the need to overhaul the existing facilities.

I1 s'agit en effet de remplacer sImplement, en le dE- vissant, le raccord normal en amont du compteur et son écrou, et d'insérer le raccord porte-soupape, pour équiper le compteur d'un dispositif simple et sûr, par lequel on est assuré-que le compteur restera toujours immergé dans l'eau et qu'il lui sera évité les surcharges qui en altèrent le fonctionnement métrolo- gique ou en abrègent la durée. It is indeed a question of simply replacing, by unscrewing it, the normal connection upstream of the meter and its nut, and inserting the valve-holder connector, to equip the meter with a simple and safe device, by which ensures that the meter will always remain submerged in water and that overloads will be avoided which will alter its metrological operation or shorten its duration.

Ces nouvelles soupapes, quril est prévu de construire en différents diamètres, produisent des pertes de charge de l'ordre de 150 mm de colonne dsean lorsqu'est atteint le débit nominal du compteur. These new valves, which are planned to be built in different diameters, produce pressure losses of the order of 150 mm of dsean column when the nominal flow rate of the meter is reached.

La soupape de retenue est conçue et réalisée dans des dimensions telles qu'elles permettent, sans que cela soit aux dépens d'un fonctionnement parfait, l'interchangeabilité avec un raccord ordinaire pour compteurs d'eaux de façon a en permettre le montage dans toutes les installations dans lesquelles il peut se produire des reflux d'eau ou un vidage des canalisations, très préjudiciable à la durée du compteur, sans modifier la solution de continuité prévue dans la canalisation pour le compteur. The check valve is designed and produced in such dimensions that they allow, without this being at the expense of perfect operation, interchangeability with an ordinary connection for water meters so as to allow mounting in all installations in which backflow of water or emptying of pipes can occur, which is very detrimental to the life of the meter, without changing the continuity solution provided in the pipe for the meter.

La soupape de retenue doit être montée en amont du compteur, tout contre la tubulure d'entrée de l'enveloppe du compteur lui-même et elle peut être utilisée efficacement pour la protection de compteurs a jet unique et a jet multiple. The check valve must be mounted upstream of the meter, directly against the inlet tubing of the meter casing itself and can be used effectively to protect single and multiple jet meters.

L'invention est ci-après décrite de façon plus dEtail- lée, a l'aide d'un exemple-non restrictif qui est illustré dans la figure annexée. The invention is described below in more detail, using a non-restrictive example which is illustrated in the appended figure.

1 désigne un corps de soupape qui sert en même temps de raccord (dimensionné suivant la norme UNI 1068 et sans boudin appuie-garniture), son extrémité filetée 10 correspondant au diamètre de la canalisation à laquelle il doit être raccordé; ce corps de soupape, en laiton estampé, présente intérieurement le siège d'appui 8 de la soupape 7. Dans la partie contiguë à l'écrou d'assemblage 5, il est formé sur le corps une clef hexagonale qui. facilite l'opération de montage dans l'installation.  1 designates a valve body which serves at the same time as a connection (dimensioned according to standard UNI 1068 and without a packing support flange), its threaded end 10 corresponding to the diameter of the pipe to which it must be connected; this valve body, of stamped brass, internally presents the support seat 8 of the valve 7. In the part contiguous to the assembly nut 5, a hexagonal key is formed on the body. facilitates installation in the installation.

7 désigne une soupape en double cône; réalisée en matière thermoplastique de haute qualitd a caractéristiques élevées d'élasticité, mobile a l'intérieur du corps 1 et guidée par des ailettes de soutien 2 appropriées. 7 designates a double cone valve; made of high quality thermoplastic material with high elasticity characteristics, movable inside the body 1 and guided by suitable support fins 2.

3 désigne un disque d'arrêt a trois rayons, obtenu par découpage de tôle de laiton, rivet dans le corps de soupape 1 pour l'empêcher de quitter la soupape. -
4 désigne un ressort d'acier inoxydable, guidé à ses deux extrémités par des moyens appropriés, pour le rappel de la soupape 7 contre son arrêt, également dans des conditions d'installation statique
5 désigne un écrou pour la fixation du corps de soupape a l'entrée de l'enveloppe 9 du compteur, en laiton estampé, a clef hexagonale, solidement dimensionné.
3 designates a three-spoke stop disc, obtained by cutting brass sheet, rivet in the valve body 1 to prevent it from leaving the valve. -
4 designates a stainless steel spring, guided at its two ends by appropriate means, for the return of the valve 7 against its stopping, also under static installation conditions
5 designates a nut for fixing the valve body to the inlet of the casing 9 of the meter, in stamped brass, with a hexagonal key, securely dimensioned.

6 désigne une garniture de caoutchouc dur, d'amiantite ou similaires, propre a assurer l'étanchéité entre le corps de soupape (raccord) et l'enveloppe 9 du compteur. 6 designates a lining of hard rubber, asbestos or the like, suitable for ensuring the seal between the valve body (fitting) and the casing 9 of the meter.

8 désigne le siège du double cône 7. 8 designates the seat of the double cone 7.

Comme déjà indiqué, la soupape de retenue retire a l'installation environ 1,5 m de colonne d'eau lorsqu'est atteint le débit nominal du compteur; elle ne modifie absolument pas la métrologie (débit) du compteur auquel elle est adjointe.  As already indicated, the check valve removes about 1.5 m of water column from the installation when the nominal flow rate of the meter is reached; it absolutely does not modify the metrology (flow) of the meter to which it is added.

Claims (4)

- REVENDICATIONS- CLAIMS 1.- Soupape de retenue automatique, destinée a protéger le compteur (non représenté) lorsqu'il est parcouru par un fluide a une vitesse excessive, caractérisée en ce que le dispositif de retenue comprend un raccord (1) de type standard. 1.- Automatic check valve, intended to protect the counter (not shown) when it is traversed by a fluid at an excessive speed, characterized in that the check device comprises a connector (1) of standard type. 2.- Soupape de retenue selon la revendication 1, caractériséeen ce que le dispositif de retenue comprend un double cône (7) qui, en position de repos, est repoussé, au moyen d'un ressort cylindrique (4), contre son siège (8) et, en position de travail, est repoussé à distance de son siège (8) par l'écou- lement du fluide. 2.- check valve according to claim 1, characterized in that the check device comprises a double cone (7) which, in the rest position, is pushed back, by means of a cylindrical spring (4), against its seat ( 8) and, in the working position, is pushed away from its seat (8) by the flow of the fluid. 3.- Soupape de retenue selon la revendication 1 ou 2, caractérisée en ce que le double cône (7) est muni d'ailettes de centrage (2). 3.- Check valve according to claim 1 or 2, characterized in that the double cone (7) is provided with centering fins (2). 4.- Soupape de retenue selon l'une quelconque des revendications 1 a 3, caractérisée en ce que les Xléments (2) et (7) sont en une matière plastique appropriée.  4. A check valve according to any one of claims 1 to 3, characterized in that the elements (2) and (7) are made of a suitable plastic material.
FR8401179A 1983-05-26 1984-01-26 Automatic retention valve for protecting a fluid meter Withdrawn FR2546600A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT21313/83A IT1163399B (en) 1983-05-26 1983-05-26 RETURN VALVE, AUTOMATIC, FOR FLUIDS, INCLUDING A STANDARD ROD

Publications (1)

Publication Number Publication Date
FR2546600A1 true FR2546600A1 (en) 1984-11-30

Family

ID=11179949

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8401179A Withdrawn FR2546600A1 (en) 1983-05-26 1984-01-26 Automatic retention valve for protecting a fluid meter

Country Status (5)

Country Link
AT (1) AT383199B (en)
DE (1) DE8402362U1 (en)
ES (1) ES276685Y (en)
FR (1) FR2546600A1 (en)
IT (1) IT1163399B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819689A (en) * 1988-02-01 1989-04-11 Ball Valve Company Head-guided poppet valve member and valve assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE787894A (en) * 1972-08-23 1972-12-18 Th Beerts Ets AUTOMATICALLY ACTING ANTI-REFLUX DEVICE FOR WATER PIPES.
US3845784A (en) * 1969-04-22 1974-11-05 Byron Jackson Inc Float valve for drill strings
DE2921465A1 (en) * 1979-05-26 1981-01-29 Seppelfricke Geb Gmbh Water meter outlet and stop valve screw connection - has collar on stop ledge, and valve cone shaft near disc seal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3845784A (en) * 1969-04-22 1974-11-05 Byron Jackson Inc Float valve for drill strings
BE787894A (en) * 1972-08-23 1972-12-18 Th Beerts Ets AUTOMATICALLY ACTING ANTI-REFLUX DEVICE FOR WATER PIPES.
DE2921465A1 (en) * 1979-05-26 1981-01-29 Seppelfricke Geb Gmbh Water meter outlet and stop valve screw connection - has collar on stop ledge, and valve cone shaft near disc seal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819689A (en) * 1988-02-01 1989-04-11 Ball Valve Company Head-guided poppet valve member and valve assembly

Also Published As

Publication number Publication date
IT8321313A0 (en) 1983-05-26
AT383199B (en) 1987-05-25
ATA27684A (en) 1986-06-15
ES276685U (en) 1985-08-01
ES276685Y (en) 1986-04-01
DE8402362U1 (en) 1984-04-26
IT1163399B (en) 1987-04-08

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