ES1170408U - Sealing device applicable to cable passage conduits (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Sealing device applicable to cable passage conduits, comprising a flexible bag (1), inflatable, and means for generating a chemical reaction in which inflation gases are produced from the flexible bag (1); said means comprising a solid reagent and a liquid reagent disposed separately and which upon mixing react with each other releasing inflation gases; characterized in that the solid reagent is disposed inside a container (2) housed in the flexible bag (1) and the liquid reagent housed in a reservoir (3a, 3b) located on the outside of the flexible bag (1) and connected to the container (2) of solid reagent by means of a flexible tube (4); the device comprising between the reservoir (3a, 3b) and the container (2) a sheet or breakable closure element that initially prevents contact between the solid reagent and the liquid reagent. (Machine-translation by Google Translate, not legally binding)

Description

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Shutter device applicable to cable ducts.

Object of the invention.

The object of the invention is a sealing device applicable to cable ducts; said device comprising a flexible, inflatable bag, intended to be introduced inside the duct to be sealed and means for producing a chemical reaction in which gases are released for inflation of the flexible bag, so that it establishes e! closing of the space between the cables and the passage through them

This device has characteristics aimed at facilitating the access and operation of the means responsible for producing the chemical reaction in which the inflation gases are released from the flexible bag.

Field of application of the invention.

This invention is applicable in the obturation of passageways of electrical, telephone or similar cables, for the protection of said cables.

State of the art.

Currently there are different sealing devices on the market intended to seal those ducts inside which pass cables such as electrical, telephone or similar cables.

These devices comprise an inflatable outer bag that has inside it means for generating and / or releasing a gas capable of inflating said

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outer bag, so that said bag adapts to the free space inside the duct making its sealing.

Specifically, in document ES 2 302 866T3 (EP 1 614 953) a device of this type for sealing conduits used in electrical, telephone and similar lines is described, the device being composed of a flexible rectangular sheet with folding lines and provided with a perimeter strip that facilitates its adhesion or welding forming a closed compartment, as a bag, whose walls once arranged around a main conduit at the end of a pipe or conduit to adapt to the curvature of said conduit or conduit when the compartment is inflated.

This device comprises for the inflation of the compartment a small tank loaded with a pressurized gas, fixed to an internal wall of the compartment and provided with opening means that can be manipulated from the outside of the compartment to open a hole or outlet mouth of the tank to allow gas to escape from the tank into the compartment and cause gradual and slow inflation of the compartment.

Also known are other devices for sealing ducts that house a reaction system inside the inflatable bag to generate the gases necessary for inflation of said bag.

Specifically, in document ES 2 546 453 T3 a pressure generating device for sealing ducts is described in which the inflatable outer bag contains an inner bag carrying a reaction system capable of releasing gases capable of inflating the outer bag; said reaction system comprising a solid reagent and a liquid reagent contained in a collapsible bag.

The characteristic of said device is that the folding bag is provided on one side with a weaker weld that breaks when subjected to manual pressure, the reagents are mixed, and the inner bag has

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a partial weld that circumscribes an area where the reaction of the solid reagent and the liquid reagent takes place.

In document ES 2 562 712 A1 a duct sealing tank is also described, and a sealing device containing said reservoir.

The deposit in question comprises an elongated hollow body of flexible material with a first section and a second section containing a liquid; said hollow body when pressed releases the liquid contained therein.

The sealing device has an external, tightly sealed, flexible container, inside which the aforementioned tank is housed and a flexible container in turn contains a carbonated chemical compound and a reagent, so that when the tank is pressed, the release of the liquid contained therein; said liquid, a! coming into contact with the solid reagent of the flexible container, causes an effervescence reaction that produces a gas, and thereby the inflation of the flexible container.

A generalized disadvantage of the aforementioned background, provided with means for producing a chemical reaction with the release of inflation gases, is that said means are housed inside the bag, and its location and operation can be complicated, once the device is housed. inside the conduit through which cables also pass; This difficulty is especially increased when the conduit in question is of a more or less reduced size.

The applicant of the present invention is unaware of the existence in the market of a sealing device applicable to cable ducts that have characteristics aimed at solving the problems set forth above and specifically to facilitate the operation of the means responsible for causing the chemical reaction and inflation gas release

Description of the invention.

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To solve the aforementioned problems, a sealing device applicable to cable ducts has been devised, comprising a flexible, inflatable bag, and suitable means for generating a chemical reaction in which inflation gases of the flexible bag are produced, It presents some characteristics oriented to solve the mentioned problem.

The means for generating said chemical reaction comprise, as in the aforementioned background, a solid reagent, for example a carbonated chemical compound, and a liquid reagent disposed separately and which when mixed react with each other, causing the release of gases from inflated in the flexible bag of the sealing device.

In accordance with the invention, the solid reagent is disposed inside a container housed in the flexible bag, and the liquid reagent is housed in a reservoir located outside the flexible bag and therefore directly accessible by the user . The aforementioned deposit, located in e! outside of the bag, it is connected to the solid reagent container disposed inside the flexible bag by means of a flexible tube; provided that the device comprises between the liquid reagent container reservoir and the solid reagent container a sheet or breakable closure element that prevents contact between the solid reagent and the liquid reagent until said liquid reagent is moved from the reservoir to the inside the container

In an embodiment of the invention e! Said tank is constituted by a pressure pear which, when manually operated, causes the liquid reagent contained inside to move to the solid reagent container disposed inside the flexible bag, thus causing the rupture of the closure sheet, the mixing of solid and liquid reagents, and the generation inside the flexible bag of some inflation gases thereof.

In a variant embodiment, it is provided that the liquid reagent container tank, located outside the flexible bag, has a body

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cylindrical that internally has a movable piston between a rear loading position, and a previous position of liquid reagent discharge.

This tank comprises a thrust spring that acts on the plunger and tends to move it towards the previous position of discharge of the liquid reagent and a trigger that holds the plunger in the rear loading position, and that when manually actuated releases the plunger, allowing that the thrust spring moves the plunger towards the previous discharge position causing the liquid reagent to move to the solid reagent container located inside the inflatable flexible bag, where the chemical reaction and release of the infusion gases occur of the flexible bag,

Description of the figures.

To complement the description that is being made and in order to facilitate the understanding of the features of the invention, a set of drawings is attached to the present specification in which, with an illustrative and non-limiting nature, the following has been represented:

- Figure 1 shows a schematic elevational view of an example of realization of the sealing device applicable to cable ducts, according to the invention and in which the liquid reagent container reservoir is constituted by a manually operated pressure pear.

- Figure 2 shows a variant embodiment of the sealing device of figure one in which the outer reservoir container of the liquid reagent comprises a thrust spring and a trigger of a plunger movable through the interior of the tank;

- Figure 3 shows a schematic view of the tank of the previous figure, partially sectioned, and in which said plunger has been represented in a rear loading position.

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- Figure 4 shows a schematic view of the tank of the previous figure, with plunger in a previous discharge position.

Preferred embodiment of the invention.

In the exemplary embodiment shown in Figure 1, the sealing device applicable to cable ducts comprises an inflatable flexible bag (1), intended to be housed in a deflated position inside a cable duct to be sealed; and means for generating a chemical reaction inside the bag in which inflation gases of said flexible bag (1) are produced.

The means for generating said chemical reaction comprise, a solid reagent for example a carbonated chemical compound, housed in a container (2) disposed inside the flexible bag (1) and a liquid reagent disposed separately in a tank (3a, 3b) located outside the flexible bag (1), and connected to the container (2) by means of a flexible tube (4).

The embodiment shown in figure 1 the tank (3a) is constituted by a pressure bulb which, when manually operated, causes the liquid reagent contained inside it to move to the solid reagent container (2) disposed inside the flexible bag (1), causing the breakage of a closure sheet (5) that initially keeps the solid and liquid reagents separated. Mixing the reagents causes a chemical reaction that releases inflation gases from the flexible bag (1) responsible for sealing any cable passage conduit (not shown).

In a variant embodiment shown in Figures 2 to 4, the liquid reagent container (3b) has a cylindrical body that internally has a plunger (31) movable between a rear position of liquid reagent loading, shown in Figure 3 and a previous discharge position represented in Figure 4.

This tank (3b) comprises a pushing spring (32) that acts against the plunger

(31) and tends to move it to the previous discharge position; and a trigger (33) that holds the plunger (31) in the rear loading position.

The actuation of the trigger (33) causes the release of the plunger (31) and that the thrust spring (32) moves the plunger (31) towards the previous discharge position causing the liquid reagent to move from said external reservoir (3b) , inside the flexible tube (4), to the solid reagent container (2) located inside the flexible bag (1), where the chemical reaction and the release of inflation gases from said flexible bag occurs .

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Once the nature of the invention has been sufficiently described, so! as an example of preferred realization, it is stated for the appropriate purposes that the materials, shape, size and disposition of the described elements may be modified, provided that this does not imply an alteration of the essential features of the invention claimed then

Claims (3)

5 10 fifteen twenty 25 30 1. Shutter device applicable to cable passage ducts, comprising an inflatable flexible bag (1), and means for generating a chemical reaction in which inflation gases of the flexible bag (1) are produced; said means comprising a solid reagent and a liquid reagent arranged separately and which when mixed react with each other releasing inflation gases; characterized in that the solid reagent is disposed inside a container (2) housed in the flexible bag (1) and the liquid reagent housed in a tank (3a, 3b) located outside the flexible bag (1) and connected to the solid reagent container (2) by means of a flexible tube (4); the device between the tank (3a, 3b) and the container (2) comprising a sheet or breakable closure element that initially prevents contact between the solid reagent and the liquid reagent. 2. Device, according to claim 1; characterized in that the tank (3a) is constituted by a pressure pear which, when activated manually, causes the displacement of! liquid reagent contained inside the container (2) of solid reagent disposed inside the flexible bag (1). 3. Device according to claim 1, characterized in that the tank (3b) located on the outside of the flexible bag (1) comprises a cylindrical body that internally has a plunger (31) movable between a rear loading position, and an anterior discharge position of the liquid reagent; a push spring (32) acts against the plunger (31) and tends to move it towards the previous position of discharge of the liquid reagent and a trigger (33) that retains the plunger in the rear loading position and that when manually operated releases to the plunger (31) that causes the liquid reagent to move from said outer tank (3b) to the solid reagent container (2).