FR2707315A1

FR2707315A1 - Sprung piston system for preventing water pipes from bursting in freezing conditions

Info

Publication number: FR2707315A1
Application number: FR9308529A
Authority: FR
Inventors: Barnay Michel Gilles
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-07-05
Filing date: 1993-07-05
Publication date: 1995-01-13

Abstract

The invention relates to a device allowing a piston (3) to be compressed against a spring (4) in a sleeve (liner) when water is converted into ice. It consists of a sleeve, closed at both ends and containing a piston (3) formed with piston rings (6) to provide sealing, and of a spring (4). An expansion indicator (5) makes it possible to perceive that the water has frozen.

Description

SYSTEME DE PISTON A RESSORT POUR EVITER
AUX CANALISATIONS D'EAU D'ECLATER LORS DU GEL.SPRING PISTON SYSTEM FOR AVOIDING
WATER PIPES TO BREAK UP DURING FREEZING.

La présente invention concerne un dispositif pour éviter que les canalisations d'eau n'éclatent sous l'action de la transformation de l'eau en glace sans enterrer les
canalisations, ni les recouvrir de laine de verre.The present invention relates to a device for preventing the water pipes from bursting under the action of the transformation of water into ice without burying the
pipes, or cover them with glass wool.

Lorsque l'eau se transforme en glace, elle se dilate et octroi des dégâts aux canalisations. When water turns to ice, it expands and damages pipes.

Le dispositif permet de remédier à cet inconvénient. I1 comporte en effet un système de piston à ressort, ce piston assurant le va et vient dans les canalisations du prototype sans permettre à l'eau non encore transformée en glace de finir au delà de la pièce par la protection de segments qui permettent l'étanchéité de la pièce et des canalisations. The device overcomes this drawback. I1 indeed has a spring piston system, this piston ensuring the comings and goings in the pipes of the prototype without allowing the water not yet transformed into ice to end beyond the part by the protection of segments which allow the tightness of the part and the pipes.

Quant au ressort, lui, permet d'encaisser par sa résistance I'effort de la pression de l'eau dans les canalisations mais lorsque l'eau se transforme en glace, il y a dilatation de l'eau en glace et le ressort assure son retrait avant qu'il n'y ait rupture des soudures ou vis des canalisations. As for the spring, it can withstand by its resistance the stress of the water pressure in the pipes but when the water turns into ice, there is expansion of the water into ice and the spring ensures its removal before there is a break in the welds or pipe screws.

Ainsi le piston muni d'un ressort s est retiré dans sa chemise avec compression du ressort pour permettre à l'eau de se dilater en glace. Thus the piston fitted with a spring is withdrawn in its jacket with compression of the spring to allow the water to expand in ice.

- Référence au dessin (1/7 et 2/7, Fig lA et Fig 1B) coupe du piston et du ressort avant et après dilatation de l'eau. - Reference to the drawing (1/7 and 2/7, Fig lA and Fig 1B) section of the piston and spring before and after expansion of the water.

- Référence au dessin (3/7 et 4/7, Fig 2A et Fig 2B) coupe de l'ensemble sauf du piston et du ressort permettant, de voir les segments assurant l'étanchéité de la pièce. - Reference to the drawing (3/7 and 4/7, Fig 2A and Fig 2B) section of the assembly except the piston and the spring allowing, to see the segments ensuring the sealing of the part.

Avec les coupes démonstratives avant et après la dilatation.With demonstrative cuts before and after dilation.

- Référence au dessin (5/7, 6/7, 7/7, Fig 3A et Fig 3B, Fig 4A et Fig 4B) vue de la pièce avant et après dilatation de profil et de face. - Reference to the drawing (5/7, 6/7, 7/7, Fig 3A and Fig 3B, Fig 4A and Fig 4B) seen from the part before and after profile and front expansion.

- Le ressort (4) présente:.une réaction supérieure à la pression de l'eau assurant le retour à l'état d'origine du piston (3),
Une réaction inférieure à la force due à la dilatation de l'eau en glace,
Une réaction du ressort inférieur à la force du à la soudure de canalisations.- The spring (4) has: a reaction greater than the water pressure ensuring the return to the original state of the piston (3),
A reaction less than the force due to the expansion of the water into ice,
A reaction of the lower spring to the force due to the welding of pipes.

- Pour visualiser le déplacement du piston (3) de l'eau en glace est prévu un témoin de dilatation (5). - To visualize the displacement of the piston (3) of the ice water, an expansion indicator (5) is provided.

Des segments (6) assurent l'étanchéité si nécessaire. Segments (6) seal if necessary.

Claims

1 - Device to prevent the water pipes from bursting under the action of the transformation of water into ice without burying the pipes, or covering them with glass wool, characterized in that it comprises a piston system (3) with spring (4), this piston (3) ensuring the comings and goings in the pipes without allowing the water not yet transformed into ice to leak beyond the part by the protection of segments (4) which allow the part and the pipes to be sealed, when the spring (4) allows it to withstand the force of the water pressure in the pipes by its resistance, but when the water turns to ice, there is expansion of the ice water and the spring ensures its withdrawal before there is a break in the welds or screws in the pipes, so the piston fitted with a spring is withdrawn in its jacket with compression of the spring to allow water to expand into ice.

2 - Device according to claim 1 characterized in that it further comprises an expansion indicator (6) of the ice water after displacement of the piston (3).