FR2677428A1 - Shut off device with mandrel (core) and developable envelope - Google Patents

Shut off device with mandrel (core) and developable envelope Download PDF

Info

Publication number
FR2677428A1
FR2677428A1 FR9106881A FR9106881A FR2677428A1 FR 2677428 A1 FR2677428 A1 FR 2677428A1 FR 9106881 A FR9106881 A FR 9106881A FR 9106881 A FR9106881 A FR 9106881A FR 2677428 A1 FR2677428 A1 FR 2677428A1
Authority
FR
France
Prior art keywords
mandrel
envelope
interior
pipe
section
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.)
Granted
Application number
FR9106881A
Other languages
French (fr)
Other versions
FR2677428B1 (en
Inventor
Girod Christian Maurice Henri
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.)
GIROD CHRISTIAN
Original Assignee
GIROD CHRISTIAN
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 GIROD CHRISTIAN filed Critical GIROD CHRISTIAN
Priority to FR9106881A priority Critical patent/FR2677428B1/en
Publication of FR2677428A1 publication Critical patent/FR2677428A1/en
Application granted granted Critical
Publication of FR2677428B1 publication Critical patent/FR2677428B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/10—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with inflatable member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
    • F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
    • F16L55/132—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
    • F16L55/134—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing by means of an inflatable packing

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipe Accessories (AREA)

Abstract

The invention relates to a shut-off device intended to match the inside contour of pipelines of various cross section, possibly littered with obstacles. It is made up of a generally inflatable mandrel (1) about which there develops a flexible envelope (2), advantageously concertina-folded. The device according to the invention is more particularly intended for blocking off tunnels and galleries.

Description

La présente invention concerne un dispositif destiné à l'obtuhtion de conduits ou canalisations de section non nécessairement circulaire. The present invention relates to a device intended for obtuhtion of conduits or conduits of section which is not necessarily circular.

Pour de multiples raisons, il peut être envisagé de boucher provisoirement ce que nous appellerons génériquement une canalisation. Pour des raisons d'adaptabilité à la géométrie précise de l'intérieur de l'ouvrage la solution souple est souvent la plus appropriée. Pour des questions de rapidité de mise en oeuvre, la solution gonflable est idéale. For many reasons, it can be envisaged to temporarily plug what we will generically call a pipeline. For reasons of adaptability to the precise geometry of the interior of the structure, the flexible solution is often the most suitable. For questions of speed of implementation, the inflatable solution is ideal.

En ce domaine le principe du ballonnement est couramment employé. Cependant si dans une canalisation d'aspect circulaire il ne pose pas de problème, il n'en est plus de même dès que la section est encombrée d'obstacle, ou est d'une autre géométrie. Le principe du ballonnement consiste en le gonflage d'une structure souple à une pression généralement supérieure à celle du fluide à retenir. Deux fonctions sont ainsi à prendre en compte: - l'étanchéité vis à vis du fluide à retenir. In this area the principle of bloating is commonly used. However, if in a circular-looking pipe it poses no problem, it is no longer the same as soon as the section is cluttered with an obstacle, or is of another geometry. The principle of bloating consists in inflating a flexible structure at a pressure generally greater than that of the fluid to be retained. Two functions are thus to be taken into account: - sealing against the fluid to be retained.

- la reprise des efforts dûs à la surpression de ce fluide.- the resumption of forces due to the overpressure of this fluid.

Dans certains cas, ces deux fonctions sont remplies par un seul et même dispositif, consistant en une structure souple gonflée à une pression supérieure à la pression à retenir et mobilisant par frottement une force supérieure à la poussée du fluide. Quand les deux fonctions sont séparées, le dispositif n'assure que la seule fonction d'étanchéité. La reprise des efforts est assurée par butonnage ou par ancrage. In some cases, these two functions are fulfilled by a single device, consisting of a flexible structure inflated to a pressure greater than the pressure to be retained and mobilizing by friction a force greater than the thrust of the fluid. When the two functions are separated, the device provides only the sealing function. The recovery of forces is ensured by beating or by anchoring.

Si, en théorie, il suffit de dimensionner judicieusement une structure souple pour qu'elle puisse obturer n'importe quelle section, en pratique il en est autrement. En effet l'obturation d'un conduit de section circulaire s'obtient bien par dilatation d'une structure souple, de diamètre initial inférieur à celui du conduit. If, in theory, it suffices to dimension judiciously a flexible structure so that it can close any section, in practice it is otherwise. In fact, the obturation of a conduit of circular section is obtained well by expansion of a flexible structure, of initial diameter smaller than that of the conduit.

Cependant dès que la section n'est plus circulaire, ou que des obstacles viennent perturber le développement harmonieux de celleci à l'intérieur de celle-là, il en est tout autrement. Des plis se forment en partie inférieure, si l'axe est sensiblement horizontal, des frottements interviennent empêchant le développement harmonieux et l'étanchéité n'est que très rarement obtenue. Les excès de matière se traduisent en plis à certains endroits que la tension, due au manque de matière en d'autres n'arrive pas à résorber. En effet le développement de la structure nécessite une certaine pression interne indispensable pour vaindre le poids propre. Cependant celle-ci se traduit rapidement par un frottement interdisant le glissement de la structure souple à l'intérieur du conduit, c'est à dire la bonne répartition dé la matière éventuellement excédentaire.Un pliage judicieux peut améliorer la disposition mais ne supprimera jamais le caractère aléatoire du développement dû au gonflage. Certains facteurs tels que la position sensiblement horizontale de l'axe, l'assymétrie de la section viendront perturber le gonflage et nuire au développement harmonieux indispensable à l'étanchéité requise.However, as soon as the section is no longer circular, or when obstacles disturb the harmonious development of it inside that, it is quite different. Folds form in the lower part, if the axis is substantially horizontal, friction occurs preventing harmonious development and sealing is only very rarely obtained. Excess material translates into folds in certain places that the tension, due to the lack of material in others, cannot be absorbed. Indeed the development of the structure requires a certain internal pressure essential to overcome the dead weight. However, this quickly results in friction preventing the sliding of the flexible structure inside the duct, that is to say the good distribution of the possibly excess material. A judicious folding can improve the arrangement but will never remove the randomness of development due to inflation. Certain factors such as the substantially horizontal position of the axis, the asymmetry of the section will disturb the inflation and harm the harmonious development essential for the required seal.

Le présente invention a pour but de remédier à cet état de fait en permettant notamment le bouchage de sections sensiblement circulaires encombrées d'obstacles, ainsi que de sections polygonales pourvues d'angles plus ou moins arrondis. The object of the present invention is to remedy this state of affairs by allowing in particular the plugging of substantially circular sections cluttered with obstacles, as well as of polygonal sections provided with more or less rounded angles.

L'invention consiste en un obturateur, comme représenté figure 1, pourvu d'une partie rigide ou rigidifiable appelé mandrin (1 ) et d'au moins une partie périphérique gonflable appelée enveloppe (2). The invention consists of a shutter, as shown in Figure 1, provided with a rigid or stiffenable part called the mandrel (1) and at least one inflatable peripheral part called the casing (2).

Le principe même de l'invention réside en une enveloppe dont l'excédent de matière est judicieusement réparti tout autour du mandrin. Celui-ci, de géométrie simple vient s'inscrire naturellement à l'intérieur de la section à obturer, venant assurer au mieux la répartition de l'enveloppe, solidaire de celui-ci, dans l'espace libre-entre le mandrin et l'intérieur de cette section.The very principle of the invention resides in an envelope, the excess material of which is judiciously distributed all around the mandrel. The latter, of simple geometry, fits naturally inside the section to be closed, providing the best distribution of the envelope, integral with it, in the free space-between the mandrel and the inside this section.

Avantageusement le mandrin aura une géométrie simple et sera obtenu par exemple par gonflage d'une ou plusieurs structures, voir figure 2. Le cas le plus simple, et le plus courant, consistant en une seule structure dont la section circulaire représente un cercle inscrit à l'intérieur de la section à obturer, voir figure 3. Il suffira alors qu'entre deux obstacles successifs, ou deux points de tangence, la quantité de matière soit suffisante pour permettre un bon contact avec l'intérieur de la section, voir figure 4. Si le mandrin est lui même gonflable, le gonflage de l'enveloppe se fera, avantageusement après que celui du mandrin en ait assuré le raidissage. Le bon développement de l'enveloppe étant assuré autour du mandrin, il conviendra que celle-ci puisse se développer jusqu'au contact avec l'intérieur de la section. Cet allongement peut être obtenu au sein même d'une matière élastique, comme un élastomère, ou par l'intermédiaire d'un pliage voir figure 6, pour un produit dont l'allongement intrinsèque ne serait pas suffisant, comme un tissu enduit. Le choix entre les deux types de matériaux est bien souvent dicté par les contraintes relevant des sujétions de pression de gonflage. Avantageusement une structure plissée "en accordéon", et confectionnée à partir d'un tissu enduit assurera un développement harmonieux et généreux, tout en permettant des pressions de gonflage en rapport avec les nécessités du contexte, voir détail du plissage figure 6. Advantageously, the mandrel will have a simple geometry and will be obtained for example by inflating one or more structures, see FIG. 2. The simplest and most common case, consisting of a single structure whose circular section represents a circle inscribed in the interior of the section to be closed, see figure 3. It will then suffice that between two successive obstacles, or two points of tangency, the quantity of material is sufficient to allow good contact with the interior of the section, see figure 4. If the mandrel is itself inflatable, the envelope will be inflated, advantageously after that of the mandrel has made it stiffening. The proper development of the envelope being ensured around the mandrel, it should be possible for it to develop until contact with the interior of the section. This elongation can be obtained within an elastic material, such as an elastomer, or by means of folding, see FIG. 6, for a product whose intrinsic elongation would not be sufficient, such as a coated fabric. The choice between the two types of material is very often dictated by the constraints arising from the inflation pressure constraints. Advantageously, a pleated "accordion" structure, made from a coated fabric, will ensure a harmonious and generous development, while allowing inflation pressures in relation to the needs of the context, see detail of the pleating in FIG. 6.

L'invention peut concerner tous les domaines techniques où des problèmes d'étanchéité, relative ou absolue, sont posés, et plus particulièrement les opérations d'obturation dans les tunnels et galeries.  The invention can relate to all technical fields where sealing problems, relative or absolute, are posed, and more particularly the sealing operations in tunnels and galleries.

Claims (8)

REVENDICATIONS .1 - Dispositif d'obturation destiné aux canalisations de section intérieure diverse et non forcément cirulaire caractérisé en ce qu'il est constitué au moins de 2 parties dont l'une baptisée enveloppe (2) est développable autour de la première baptisée mandrin (1) afin de boucher l'espace compris entre celle-ci et l'intérieur de la canalisation (3). .1 - Sealing device intended for pipes of various interior section and not necessarily circular, characterized in that it consists of at least 2 parts, one of which is called an envelope (2) can be developed around the first called a mandrel (1 ) in order to plug the space between it and the interior of the pipe (3). 2 - Dispositif selon la revendication 1, caractérisé en ce que la géométrie du mandrin (1) est obtenue par gonflage d'une ou plusieurs structures souples dont l'ensemble forme un volume dont la section est inscrite à l'intérieur de la canalisation, sans assurer de contact sur toute sa périphérie, c'est-à-dire sans boucher totalement l'espace (3) compris entre le mandrin et l'intérieur de la canlisation.2 - Device according to claim 1, characterized in that the geometry of the mandrel (1) is obtained by inflating one or more flexible structures, the assembly of which forms a volume, the section of which is inscribed inside the pipe, without ensuring contact over its entire periphery, that is to say without completely blocking the space (3) between the mandrel and the interior of the pipe. 3 - Dispositif selon la revendication 1 ou 2, caractérisé en ce que le développement de l'enveloppe (2) est obtenu par gonflage du volume compris entre celle-ci et le mandrin (1) ; ce gonflage étant réalisé jusqu'à une pression suffisante pour assurer l'étanchéité entre l'obturateur et l'intérieur de la canalisation.3 - Device according to claim 1 or 2, characterized in that the development of the envelope (2) is obtained by inflating the volume between it and the mandrel (1); this inflation being carried out to a sufficient pressure to ensure the seal between the shutter and the interior of the pipe. 4 - Dispositif selon la revendication 3, caractérisé en ce que l'enveloppe (2) est constituée d'un produit dont le mode de pliage assure une quantité de matière permettant un contact suffisamment uniforme avec l'intérieur de la canalisation pour permettre une étanchéité satisfaisante.4 - Device according to claim 3, characterized in that the envelope (2) consists of a product whose folding mode ensures an amount of material allowing sufficiently uniform contact with the interior of the pipe to allow sealing satisfactory. 5 - Dispositif selon la revendication 4, caractérisé en ce que le mode de pliage de l'enveloppe consiste en un plissage en "accordéon" d'une partie de celle-ci. 5 - Device according to claim 4, characterized in that the folding mode of the envelope consists of pleating in "accordion" part of it. 6 - Dispositif selon l'une quelconque des revendications1 à 4, caractérisé en ce qu'il est réalisé, du moins en partie en tissu enduit.6 - Device according to any one of claims1 to 4, characterized in that it is made, at least partly in coated fabric. 7 - Dispositif selon l'une quelconque des revendications 3 à 6, caractérisé en ce que l'enveloppe (2) est gonflée après le gonflage du mandrin (1).7 - Device according to any one of claims 3 to 6, characterized in that the envelope (2) is inflated after the inflation of the mandrel (1). 8 - Dispositif selon l'une quelconque des revendications 3 à 7, caractérisé en ce que l'enveloppe (2) est gonflée à une pression inférieure à celle du mandrin (1). 8 - Device according to any one of claims 3 to 7, characterized in that the envelope (2) is inflated to a pressure lower than that of the mandrel (1).
FR9106881A 1991-06-06 1991-06-06 SHUTTERING DEVICE WITH MANDREL AND DEVELOPABLE ENVELOPE. Expired - Fee Related FR2677428B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9106881A FR2677428B1 (en) 1991-06-06 1991-06-06 SHUTTERING DEVICE WITH MANDREL AND DEVELOPABLE ENVELOPE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9106881A FR2677428B1 (en) 1991-06-06 1991-06-06 SHUTTERING DEVICE WITH MANDREL AND DEVELOPABLE ENVELOPE.

Publications (2)

Publication Number Publication Date
FR2677428A1 true FR2677428A1 (en) 1992-12-11
FR2677428B1 FR2677428B1 (en) 1993-10-01

Family

ID=9413550

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9106881A Expired - Fee Related FR2677428B1 (en) 1991-06-06 1991-06-06 SHUTTERING DEVICE WITH MANDREL AND DEVELOPABLE ENVELOPE.

Country Status (1)

Country Link
FR (1) FR2677428B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT401286B (en) * 1992-02-21 1996-07-25 Weber Theo DEVICE FOR SEALING LINING OF DEFECTIVE PIPE WALLS
US6439580B1 (en) 1998-04-09 2002-08-27 Reinhard Hecht Sealing element for pipelines

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2279257A (en) * 1941-02-11 1942-04-07 Charles W Sievert Expansible closure means for conduits

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2279257A (en) * 1941-02-11 1942-04-07 Charles W Sievert Expansible closure means for conduits

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT401286B (en) * 1992-02-21 1996-07-25 Weber Theo DEVICE FOR SEALING LINING OF DEFECTIVE PIPE WALLS
US6439580B1 (en) 1998-04-09 2002-08-27 Reinhard Hecht Sealing element for pipelines

Also Published As

Publication number Publication date
FR2677428B1 (en) 1993-10-01

Similar Documents

Publication Publication Date Title
US4949744A (en) Method and device for mounting a body in a conduit containing fluid
FR2749639A1 (en) QUICK CONNECTION DEVICE FOR PRESSURE FLUID CONDUIT
US5082026A (en) Pipeline plugger
FR2665499A1 (en) INFLATABLE JOINT SEALING DEVICE FOR MOBILE DOOR OR PANEL.
CA1058650A (en) Inflatable rim joint
FR2677428A1 (en) Shut off device with mandrel (core) and developable envelope
BE1006081A3 (en) Bypass pipe fitting for thermoplastic.
FR2662489A1 (en) Pipe connector for sealing leaky pipelines
FR2499668A1 (en) FLEXIBLE COUPLING DEVICE FOR PIPES
JP3167252B2 (en) Shut-off valve
FR2641360A1 (en) EXPANSION COMPENSATOR MOUNTED BETWEEN TWO PIPES
EP0537077A1 (en) Provisional sealing device for a pipe conveying any kind of fluid
EP0160030B1 (en) Membrane valve controlled by a pressure fluid
JP2001241590A (en) Bag for water stop
FR2750193A1 (en) SEALING RING OF A WIPER DRIVE SHAFT
JP3218095B2 (en) Pipe fittings
HU193635B (en) Device for closing tubings
JPH02246721A (en) Water stop cock at cable protective pipe end and its water stop method
FR2812373A1 (en) Inflatable plug for blocking a pipeline for maintenance consists of a pressurised gas cylinder surrounded by an inflatable membrane
JP3059023B2 (en) Filter for pipeline
EP2926044A1 (en) Device for closing off a pipe
FR2807492A1 (en) Fluid piping branching device comprises a pipe collar with a slot between a tubular joint and a toroidal sealing ring, where a spatula is fitted to give a tight seal
FR2732461A1 (en) Permanent joint sealing air-tightness monitoring device
FR2536496A1 (en) Cut-off for cutting off a fluid transport duct
EP0736717A1 (en) Sealing connecting device for a hydraulic circuit

Legal Events

Date Code Title Description
ST Notification of lapse