Sealing device

FIELD: electricity.

SUBSTANCE: concave body is suggested with open outer edge and several parts of perimetre adjacent with open body edge. Elastomeric film is attached to concave body perimetre parts along open concave body edge. Elastomeric film is suited for coupling one or more cables when the cables are located within the body to isolate them from environmental conditions.

EFFECT: invention improves device impermeability and provides possibility of reuse when cable or joint is restored.

10 cl, 5 dwg

 

The technical field to which the invention relates.

Closed casing used in the telecommunications and electricity industries to protect the cables from the elements of the external environment. Such closed housing can be mounted on the surface of the earth, both above-ground dome, buried in the ground, placed in an accepted holes or attached to electrical pylons. The outer boundary of the closed buildings provides mechanical protection from environmental elements such as rain, floods, winds and snow and other water or dirt particles that can damage the connection or connector.

The invention

A variant of the invention, for example, may mainly include a concave housing with an open face and a few peripheral parts on the perimeter, adjacent to the open face of the housing. The elastomeric film can be attached on the peripheral parts on the perimeter of the concave hull of the open concave faces of the housing. The elastomeric film may be adapted to interface one or more cables when the cables are located inside the housing to seal the cables from environmental conditions.

In addition, for example, a variant embodiment of the invention may mainly include a concave body with OTKRYTOGO and more peripheral parts on the perimeter, adjacent to the open face of the housing. The elastomeric film can be attached on the peripheral parts on the perimeter of the concave hull of the open concave faces of the housing. One or more cables can be located inside the enclosure. The first part of each of the cables can be almost surrounded by the elastomeric film to seal the cables from environmental conditions. The second part of each of the cables may continue outside of the elastomeric film and the concave hull.

In the operation of the invention mainly provides superior protection and waterproof insulation of one or more cables and / or coupling components from harmful environmental conditions in the communications industry (such as the telecommunications industry), industry and public areas (such as the power industry or other industries, including distribution cables and / or optical transmission of light or electricity, with the search for improved solutions regarding sealing, decisions regarding reuse decisions under pressure, decision-atmosphere conditions and solutions with weight conditions, mainly provided by the invention.

One object of the invention enable elastomers the second film, flexible layer and (or) tight insulating material in combination with a hollow type concave hull mainly provides solutions for a closed body, which offer superior sealing, at the same time providing a closed housing, which is recycled to the extent not provided in existing enclosed buildings.

Further, in another object of the invention mainly provides superior mechanical stress and residual strain of the cable, caused by pressure changes during the period of operation. A relatively soft surface layer attached to the shells can deform, adapting to changes in pressure without creating undue stress on the outer border of the buildings. The elongation of the deformable layers attached to the buildings, take into account significant changes in the form of a closing element, while maintaining a waterproof insulation. Since protected from water volume only slightly larger than the junction and, as a rule, considerably less than the full volume of the inside of a closed body, the effects of changes in pressure due to flooding primarily minimized compared to the full volume of waterproof closed body.

Further, the hollow type is ogologo body mainly provides increased room or space to accommodate larger cables inside a closed housing. Further, the hollow type concave hull mainly provides a lightweight solution for a closed body, and reduction in weight can significantly ease the installation and transportation, as well as reduce the cost associated with the manufacture of such enclosed buildings.

In the past, closed case demonstrated the problems that have not yet been overcome in the technique. Still closed shells and their isolation mechanism showed a significant change in form when the temperature changes. Such changes in shape caused disturbance isolation and penetration of water and dirt particles, breaking the protective properties of the material are important for tightness. Still closed casing was also the problem that they could not be easily re-used, which is essential in cases when it is necessary to repair the cable or connection. Excess materials and heavier weight, concomitant still closed buildings, led to higher costs and more complex transportation.

Brief description of drawings

Figa is a view in isometric concave hull according to a variant embodiment of the invention.

Figb is a view in isometric concave housing according to another variant embodiment of the invention.

Figa is a view in isometric elastomers the second film, attached to the housing, according to a variant embodiment of the invention.

Figb is a view in isometric elastomeric film attached to the housing, according to a variant embodiment of the invention.

Figa is a view in isometric of a closed housing that includes one or more cables according to the variant embodiment of the invention.

Figb is a view in isometric of a closed housing that includes one or more cables according to the variant embodiment of the invention.

Figure 4 is a cross section of a closed body, taken along the line 4-4 in figure 3, according to a variant embodiment of the invention.

Figure 5 is a view in isometric of a closed housing, which includes more than one cable, according to a variant embodiment of the invention.

Detailed description

As shown in the drawings, the invention includes a concave housing 12 having an open face. As shown in Figa, a variant embodiment of the invention may include, for example, a single flexible material is able to bend. In addition, for example, as shown in Figb, an implementation option may include multiple hard arcuate walls connected by loops, which together form the concave case.

The housing 12 may be manufactured in various ways, for example by injection molding by blowing forms, pulling shapes, extrusion, vacuum molding, centrifugal molding or thermal molding. Embodiments of the housing 12 can be made of various materials, such as aluminum, steel, metal alloys and plastics, in particular thermoplastics manufactured by casting, such as polyolefin, polyamide, polycarbonate, polyester, polyvinyl, and other polymeric materials. In the embodiment, the plastic housing 12, you can use a metal reinforcing strip to increase rigidity and strength.

The housing 12 may be hollow and concave. Concave housing 12 can have a greater concavity or small concavity and can have, for example, such concavity as a hollow rectangular box with an open face, or a concavity, as in a hollow semi-cylindrical construction with an open face. The closing element may include, for example, an implementation option, in which the volume between the inner wall of the concave housing 12 and the elastomeric film 20 is almost free from filling material. Also closing element may include an implementation option, in which part of the wall of the concave housing 12 contains one or more holes that allow to get air inside the concave housing 12.

On the other hand, the closing element m which may include an implementation option, for example, in the concave cavity of the concave housing 12 are destructible gas bubbles 70. In addition, the closing element may include options for implementation, where destructible gas bubbles 70 are located in the concave cavity of the concave housing 12. The material used for making bubbles 70 gas is typically a polyethylene. The diameter, height and pressure of gas bubbles can vary. Gas bubbles 70, for example, can be bubble packaging material. Gas bubbles 70, for example, may include filled with nitrogen bubbles. Gas bubbles 70 mostly give a relatively constant pressure to the cables 30 and / or connecting component 35 inside the closed casing 10. Also, embodiments of gas bubbles 70 may constitute a pre-assembled film on the top and or bottom of gas bubbles 70.

As shown in the drawings, embodiments of the housing 12 may include, for example, one or more elastomeric film 20 attached to part 15 of the perimeter of the concave housing 12 through the open face of each concave housing 12.

For example, as shown in Figa and 2B, the elastomeric film 20 can be attached to the housing 12 by aligning one or more elastomeric films 20 with one or more concave housings 12 is almost planar configuration around the perimeter 15 of the open face of each concave housing 12 and securing the elastomeric film 20 on MAGNETOM the housing 12. Part 15 along the perimeter of the open face of the enclosure 12 is made parallel to the axial direction of the housing 12. As shown in Figa, options for implementation may include elastomeric film 20 attached in the plane of the open face of the enclosure 12. In another case, as shown in Figb, options for implementation may include elastomeric film 20 in a curved configuration, attached to the perimeter of the housing 12 to facilitate mounting of one or more cables 30.

The elastomeric film 20 typically contains at least a polymer and the proportion of oil. Embodiments of the elastomeric film 20 may include, for example, thermoplastic polymer water-repellent gel sealant containing at least the proportion of oil.

The properties of the polymer, which makes it ideal for this application are a good compatibility with butter and kauchukovaja structure, meaning flexible circuit with some significant molecular mobility between cross-linking sites. Examples of polymers that are suitable may include silicone oil insulation, polyurethanes, polyesters, polyepoxides, polyacrylates, polyolefins, polysiloxanes, polybutadienes (including polyisoprene) and hydrogenated polybutadienes and polyisoprenes and copolymers, including block of the copolymers and grafted copolymers. The blocks of the block copolymers may include the above-mentioned polymers and polyesters (monoalkenes), including foam. Samples of these block copolymers may include, in particular, SEBS (styrene ethylene-butylene, styrene), SEPS (styrene ethylene-propylene, styrene), similar styrene-rubber-styrene polymers, diblock, triblock, graft and star-shaped block copolymers and block copolymers with blocks that are inhomogeneous. Can also be sealed items porous materials and those that contain an embedded micro-bubbles or other soft (or hard) fillers.

Options for implementation may characterize the elastomeric film 20 as a thermoplastic or, alternatively, as the liquid in the form of a thermal hardening, hardening at room temperature (RTV cures), hardening against UV radiation, electron beam hardening, hardening against radiation and hardening on exposure to air and / or humidity. The elastomeric film 20 typically has a higher cohesion than adhesion.

The share of oil in the elastomeric film 20 may be, for example, in the range from about 50% to about 98% of the elastomeric film 20 or, more specifically, in the range from about 85% to about 98% of the elastomeric film 20. In addition, for example, embodiments of the elastomeric film 20 can switch the th the particle filler, such as polymeric spheres or glass microspheres. One example of such filler particles are deformable bubbles, where the elastomeric film formed by foaming and add the individual bubbles. Added bubbles can be polymeric or glass micropezidae. The addition of such filler particles or bubbles allows the elastomeric film 20 to show the level of compliance that will further ensure the fit of the elastomeric film 20 during operation.

Embodiments of oils may include, for example, fillers such as synthetic oils, vegetable oils, silicones, esters, hydrocarbon oils, including specific naphthenic oils and paraffinic oils and blends, and possibly a certain percentage of aromatic oils. Some of the trains in the elastomeric film 20 are intermediate between polymers and oils. For example, the elastomeric film 20 may include a liquid rubber, which may not become part of the gel-like polymer network. Examples of such liquid rubber may include polybutylene with a mean molecular weight and low molecular EPR (ethylene propylene rubber). The addition of liquid rubber to the polymer and the oil can adapt the parameters of the sealant, for example, increasing his grip. what may be the added substance, giving stickiness, antioxidants, colorants, UV stabilizers and other substances.

Typically, oil is largely hydrophobic, so as not to pass water. Also, as a rule, oil mainly reduces the number of entanglements of the chains and the number of cross-links in volume, thereby making the material softer in the form of a gel. Also, as a rule, mainly oil reduces the viscosity or the source material (before curing), or molten thermoplastic. Also, as a rule, the oil is relatively inexpensive, thereby reducing the cost of development in General.

As shown in figure 3 and 5, the housing 12 may be used to isolate the water or other environmental elements from cables 30 and / or the connecting component 35 inside the closed casing 10. Figa shows the body as a single flexible design, which contains gas bubbles 70 between the housing 12 and the elastomeric film 20. Figb shows the case as several hinged rigid walls, which form a hollow body 12 around the elastomeric film 20 and 30. Figure 5 shows the multi-conductor cables 30, the incoming and outgoing sides of the housing 12.

The first part of each of the cables 30, for example, may be located in the housing 12, being almost surrounded by the elastomeric film 20. The second part of each of the Kaba is it 30, for example, can continue outside of the casing 12 and the elastomeric film 20 attached to the housing 12. Embodiments of the cable 30 may include, for example, copper or aluminum cable 30, pre-connected to the cable clamp 30, a glass fiber optic cable 30, polymeric fiber-optic cable 30, a combination of wired and fiber-optic cable 30 or any other type of cable 30, which hold the light and / or electricity.

The housing 12 may primarily act to isolate a single cable 30 or group of cables 30 from water or other environmental elements. Options for implementation may include, for example, the cable 30 or group of cables 30 connected with another cable 30 or group of cables 30, inside the closing element through the connecting component 35, or a single cable 30 is passed over the entire length through the closing element as a whole, or, for example, both can be within a single closing element. Each of the cables 30, passing within or through the closing element is made along the direction almost parallel to the plane of the open face concave housing 12. Part of the perimeter are connected by one or more fasteners on opposite sides of the open faces to hold a closed body 10 in the closed or locked floor the terms with zaizolirovali in it by the cables 30. One of the types of fasteners, for example, can be performed zuzelo with housing after molding.

In some embodiments, the implementation of which does not include the connecting component 35 that connects two or more cables 30, single cable 30, is passed through a closing element, which should be isolated from water or other environmental elements, once used material for cable repair for repair, or maintenance of the cable 30. In this case, when the material for repair of the cable is surrounded by one or more cables 30 within the closing element, worn-out or broken part of the cable 30, which contains the material to repair the cable, connect the part of at least one elastomeric film 20, for example, after the location in the housing 12 by a closing element. Embodiments of materials for repair of cable used for cable 30 can include, for example, tapes, sealants, foam, epoxy resin, sealing agents, protective butt connectors, wiring, ground wire and other materials to repair the cable.

If the connecting component 35 is used to connect two or more cables 30, the housing 12 is mainly isolates not only each cable 30 running inside or through Zack is yuushi element, but also isolates the connecting component 35 inside the closing element from water or other environmental elements. Embodiments of the connecting component 35 may include, for example, a connector or other connecting component 35, which contains the connectors (including separate connectors, modular connectors, forked connectors pre-attached to the clip connectors or other connectors). In addition, for example, in some applications, the connecting component 35 may contain the target output, where the cable 30 connected to an output electrical or optical device.

As shown in figure 4, the connecting component 35, when he is surrounded by the elastomeric film 20 facing to the portion of the elastomeric film 20 attached to the housing 12. The elastomeric film 20 mainly acts to prevent from ingress of foreign particles and fluid to portions of one or more cables 30 and / or the connecting component 35, which is placed between the elastomeric film 20.

In some embodiments, the implementation, as shown in Figure 5, if more than one cable 30 is required for placement in the closed case, and if several cables 30 are too close to each other or they are too large in diameter, then there may be little space that there is between the cables 30 and which the elastomeric film 20 does not fill volume. In this case, can be used a clamp, clip or other fastening elements 50 or groups of clips, clamps or fasteners 50 to clamp the front layers of the elastomeric film 20 to each other in the part between the cable 30, thereby closing the volume between the cables 30 and insulating cables 30 from water, dirt, particles or other environmental conditions.

As shown in the exemplary embodiment in figure 4, there may be the volume between the elastomeric film 20 surrounding one side of the cable 30 and the other side of the cable 30 (between the cable and the connecting component), by which the amount mainly corresponds to the changes in air pressure. The space is mainly to allow the volume to be compressed in response to increasing external pressure volume within the concave housing 12 outside of the elastomeric film 20.

In the operation of the invention mainly provides superior protection and waterproof insulation of one or more cables 30 and / or the connecting component 35 from harmful environmental conditions in the communications industry (such as the telecommunications industry), industry and public areas (such as the power industry or other industries, including distribution cables 30 and (or) lane the cottage optical light or electricity, with advanced search decisions decisions sealing, decisions regarding reuse decisions under pressure, decision-atmosphere conditions and solutions with weight conditions, mainly provided by the invention.

The inclusion of the elastomeric film 20 in combination with a hollow type concave housing 12 mainly provides the solution for the closed casing 10, which creates exceptional sealing, at the same time providing a closed housing 10, which is re-used up to a level that is not provided in the existing sealed 10.

Further, the invention mainly provides superior mechanical stress and permanent deformation of the cable 30, based on the inevitable changes in pressure during periods of operation. The relatively soft surface of the elastomeric film 20 attached to the housing 12 may be deformed, adapting to changes in pressure without creating undue stress on the outer edge of housing 12. The elongation of the deformable layers attached to the housing 12, takes into account significant changes in the shape of the closing element, maintaining at the same time waterproof insulation. Since protected from water volume only slightly larger than the amount designated connection, and how great the ILO significantly less than the full volume of the inside of the closed casing 10, the effect of changes in pressure due to flooding primarily minimized compared to the full volume of waterproof closed casing 10.

Further, the hollow type concave housing 12 mainly provides increased room or space to accommodate larger cables 30 within a closed casing 10. Further, the hollow type concave housing 12 mainly provides a lightweight solution for a closed body 10, and a reduction in weight can significantly ease the installation and transportation, as well as reduce the cost associated with the manufacture of such a closed body 10.

Although the above detailed description contains many specific details intended for illustration, any expert will appreciate that many changes, modifications, substitutions and amendments to the parts lie within the scope of the claimed invention. Accordingly, the invention described in the detailed description set forth without imposing any limitations on the claimed invention. Typical scope of the invention should be defined by the following claims and legal equivalents.

1. A closed case to protect the cables from the external environment that contains:
concave to the STS with an open outer face, this concave body has many parts of the perimeter adjacent to the open face of the housing; and
the elastomeric film attached on the parts of the perimeter of the concave hull of the open concave faces of the housing, while the elastomeric film is adapted for coupling one or more cables when the cables are located within the housing to seal the cables from environmental conditions.

2. A closed casing according to claim 1, in which the concave body contains a flexible material.

3. A closed casing according to claim 1, in which the concave body contains many hard arcuate walls connected by loops.

4. A closed casing according to claim 1, in which the volume between the inner wall of the concave housing and the elastomeric film is almost free from filling material.

5. A closed casing according to claim 1, in which a part of the perimeter of the open face concave hull parallel to the direction of the axis of the concave hull.

6. A closed casing according to claim 1, in which at least a portion of the elastomeric film includes a polymeric hydrophobic thermoplastic composition that includes at least a share of the oil.

7. A closed housing according to claim 6, in which the share of oil is contained in the range of from about 50% to about 98% of the elastomeric film.

8. A closed casing according to claim 1, in which at least part of the elastomer film with which contains the filler materials.

9. A closed casing according to claim 1, in which at least a portion of the elastomeric film contains oil and a polymer selected from the group consisting of: polyurethane, polyester, foam, polyepoxide, polyacrylate and polyolefin.

10. A closed casing according to claim 1, additionally containing:
one or more cables, and the first portion of each of the cables is practically surrounded by an elastomeric film, and the second part of each of the cables passes outward from the elastomeric film and the concave hull.



 

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15 cl, 31 dwg

FIELD: electricity.

SUBSTANCE: sealing device is intended for design of cables intended for underground usage. The pressure-limiting device for cables may contain, for example, the first cable including a conductor and an oil-containing layer encapsulating the conductor and the second cable having a conductor. At the connection spot the first cable conductor may be connected to that of the second cable. The connection spot and the conductors of the first and the second cables may be covered with a pressure-limiting hose. Installed at multiple spots o the pressure-limiting hose may be multiple ties for crimping the pressure-limiting hose round the connection spots and the first and he second cables sections. The pressure-limiting device may be implemented in the form of a hose on a single-strand cable or in the form of a breakout with individual hoses on a multi-strand cable such as a three-strand cable.

EFFECT: oil-containing cables sealing improvement.

20 cl, 12 dwg

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