KR20100015536A - Fire barrier - Google Patents

Abstract

A fire barrier is provided for a structure including a substantially planar member (1) having secured thereto an elongate substantially C-shaped member (3) having a longitudinal slot (5) formed therein, the C-shaped member having longitudinally-extending flanges (7) protruding laterally therefrom in a plane substantially parallel to the planar member. The fire barrier includes a plurality of panels (9) of fire-resistant material supported adjacent to the planar member (1) and extending between the planar member and one of the lateral flanges (7). A sheet of intumescent material (13) covers the elongate slot (5) of the C-shaped member (3), and resilient retaining means (15) extends partially around the C-shaped member (3) and engages behind the flanges (7) thereof so as to support the sheet of intumescent material (13) and the panels (9) of fire-resistant material.

Description

Firewall {FIRE BARRIER}

The present invention relates to a firewall and is not exclusive and more specifically to an underfloor firewall for aluminum or steel train structures. As used herein, the term "train structure" includes trains, trams, subways and similar structures.

The aluminum and steel train structure is provided with an elongated member of substantially C type, which has an elongate slot (generally referred to as a "C-slot") which is in downward contact. The C-slot is provided to facilitate mounting and securing of all underflow devices to the train structure. Thus access to the C-slot is always required during assembly of the train structure.

Underfloor passive fire protection to protect both the C-slot and the floor of the train structure, at least in conjunction with the aluminum train structure, in order to comply with the provisions of EN45.545 and other countries with regard to firewalls. It is necessary to provide a protection system.

In particular, the provision of fire protection for C-slots is very time consuming and costly, and also limits the flexibility of the layout of the underfloor equipment. Typically the fire protection is installed with bolts and / or rivets and with brackets and the installation process requires the train structure to be switched over.

It is therefore an object of the present invention to provide a firewall which at least ameliorates or overcomes the above disadvantages.

According to the present invention there is provided a firewall for a structure comprising a planar member that is substantially secured to the firewall, wherein the substantially elongated C-shaped member has a longitudinal slot formed therein, wherein the C-shaped member, The firewall has a longitudinally extending flange that projects in the longitudinal direction in a substantially parallel plane, the firewall

A plurality of panels formed of heat-resistant material developed between the planar member and either transverse flange and supported adjacent the planar member;

A sheet of intumescent material covering the elongated slot of the C-shaped member;

Elastic retaining means engaging behind the flange and partially deployed around the C-shaped member to support the panel of heat-resistant material and the sheet of expandable material.

The panel comprises a thermal insulating material, for example a porous thermal insulating material. The panel may be included within an envelope, for example aluminum foil and / or glass fiber fabric.

The panel may be secured to the planar member by an adhesive, such as a pressure-sensitive adhesive or a thermally activated adhesive. The adhesive may be provided between the planar member and the panel.

The expandable material may be mounted on a tape. The tape embodying the expandable material may be a self adhesive. The expandable material may cover the contacts of the flange and the sides of the C-shaped member.

The resilient retaining means may comprise a sheet-shaped spring member. The spring member may include a curved portion that develops around the free end of the flange to hold the spring member in place. Further, the curved portion may be provided to hold the expandable material with respect to the flange. A transverse gap may be provided between the curved portion and the free end of the flange to provide an extension portion for supporting the panel. The spring member may include a longitudinally deployed portion that is biased relative to the panel to support the same. The spring member may comprise a substantially V-shaped portion throughout the C-shaped member. Alternatively, the spring member may include a lid portion coupled to the curved portion by the outwardly inclined portion and deployed over the C-shaped member.

A weatherproof cover, for example formed of metal, may be provided for the panel.

BRIEF DESCRIPTION OF THE DRAWINGS For a better understanding of the invention and in order to more clearly show how the invention is carried out, it is effectively illustrated with reference to the accompanying drawings by way of example, which is as follows.

1 is a perspective view diagrammatically showing a portion of a train structure in which a firewall is clearly partially cut and in which one embodiment of the firewall according to the invention is provided;

FIG. 2 shows diagrammatically a cross section corresponding to FIG. 1; FIG.

3 is a perspective view schematically illustrating a portion of a train structure provided with another embodiment of a firewall according to the present invention, partially cut away to make the firewall clear;

4 is a schematic cross-sectional view corresponding to FIG. 3.

The train structure shown in FIGS. 1 and 2 is shown inverted for convenience. However, the firewall according to the present invention does not require a train structure to be diverted for installation.

1 and 2 show a portion of a train structure including a floor 1 which is fixed to the train structure, for example by welding seams, the elongated C-shaped member 3 being an underfloor device (not shown) of the train structure. E) is provided with an elongated slot 5 which is in downward contact for fixing and mounting. A longitudinally extending flange 7 is provided along each side of the C-shaped member and projects laterally from the C-shaped member. The flange 7 may be fixed to the C-shaped member by welding or the flange may be integrally formed with the C-shaped member by extrusion. Alternatively, the floor 1, the C-shaped member 3 and the flange 7 can be formed together as a single protrusion. As will be explained, the flange 7 is located approximately in the middle along the side length of the C-shaped member 3, but in practice the flange can be located at a convenient position along the side of the C-shaped member. Although only a single C-shaped member is shown for ease, a plurality of C-shaped members are provided which are actually spaced laterally in the space.

The firewall comprises a panel 9 arranged between the C-shaped members 3 and formed of self-supporting heat resistant, heat insulating material. For example, the panel may comprise one or more glass fibers, other suitable fiber materials, and an envelope including an aluminum foil and a thermally insulating material based on compressed porous silica. It may include. Alternatively, the compressed microporous thermal insulation material may not be covered. The panel may for example have a thickness of 3 to 25 mm.

The panel 9 is supported at the opposite edge by a flange 7 provided on the C-shaped member and is a bonding film based on a pressure-sensitive silicone adhesive effective at temperatures up to approximately 250 degrees Celsius. It is fixed to the train floor (1) by (11), which has an area substantially the same as that of the panel (9). The adhesive film is located between the panel 9 and the train floor 1 and provides for attachment of the panel to the floor and thus provides further support beyond the flange 7. The adhesive film 11 allows the thin layer to be formed into the panel 9 in a preliminary step by passing the component through a heated roller and the resulting composite can be fixed to the train floor 1. .

The slot 5 in the C-shaped member 3 is closed by a self-adhesive tape 13 embodying an intumescent material. The tape may have a suitable width to cover the slot 3, for example from 20 mm to 100 mm, which is applied as a strip to the lower surface of the C-shaped member 3 between the items of the underfloor equipment ( apply). As can be seen from FIG. 2, the intumescent tape 13 passes through the lower surface of the C-shaped member 3 containing the slot 5 and terminates at the free end of the flange 7. (7) and spread throughout the side wall. The advantage of using a strip of self-adhesive intumescent tape is that the tape can be applied to the C-shaped member 3 when the tape is convenient during assembly of the train structure and the position of the tape 13 is underfloor equipment. It can be applied to the position of can thereby facilitate the deformation and modification of the underfloor equipment. In the case of a fire, the intumescent material fills and seals the C-shaped member 3 and the slot 5 to prevent fire from penetrating along the C-shaped member.

In order to ensure the complete form of the firewall, the barrier further comprises a plurality of retaining spring members 15 and the retaining spring members comprise the intumescent tape 13 and the panel. 9) Provide to keep all position.

The retaining spring member 15 shown in FIGS. 1 and 2 is made of a sheet-shaped material and has a V-shaped portion 17 enclosing the flange 7, the expansion tape 13 and the basic C-shaped member 3. Include. At each free end of the V-shaped portion 17, the expansion tape 13 is biased against the free end of the flange and the portion 21 which is biased at the free end relative to the panel 9 and develops in an outward direction. There are two additional parts, on the opposite side, to which the curved part 19 joins around the free end of the flange 7, in order to maintain. The spring member 15 can be developed in the longitudinal distance of the C-shaped member 3 with a distance of 10 to 50 mm (spring width), the curved portion 19 having a distance of approximately 10 to 50 mm It may be a portion 21 that is deployed in the outward direction. The spring member 15 is made of a high temperature suitable resilient material, such as spring steel, without using any other tool, and clips or unclips the material over the C-shaped member 3. Can be installed manually and removed. The use of spring members significantly speeds up the firewall installation, reduces weight, and eliminates the need for additional fastening, such as bolts and / or rivets. Moreover, there is no need to switch train structures to install or remove a firewall and again reduce the installation time for the firewall.

Although not shown, the outer surface of the panel 9 may be provided with a waterproof coating or cover, such as a metal sheet, if necessary.

3 and 4 differ from the embodiment of FIGS. 1 and 2 in the form of a retaining spring member 15. The retaining spring member 15 of FIGS. 3 and 4 has a lower profile and around the free end of the flange at a distance spaced beyond the free end to provide a support for the panel 9. Along the upper (in use) side of the flange between the panels 9, the curved portion 27 that develops along the lower side of the flange, inclined outwardly to the lower (in use) side of each flange 7 And a lid portion 23, which is alternately deployed on the lower (in use) side of the C-shaped member 3. The width of the spring and the length of the curved portion can be formed substantially the same as that of FIGS. 1 and 2.

Clearly the retaining spring member may have any other form provided with a retaining spring member provided to hold the expansion tape 13 and panel 9 as appropriate.

Claims (20)

The firewall for a structure having a planar member 1 has an elongated C-shaped member 3 fixed to the firewall, the C-shaped member having a longitudinal slot 5 formed therein, the C-shaped member being flat In a firewall having a flange (7) extending longitudinally projecting laterally from a C-shaped member in a plane parallel to the member, the firewall A plurality of panels (9) of heat resistant material developed between the planar member and any transverse flange (7) and supported adjacent to the planar member (1); A sheet of intumescent material 13 covering the elongated slot 5 of the C-shaped member 3; Comprising resilient retaining means 15 engaged within the flange 7 and partially deployed around the C-shaped member 3 to support the panel 9 of heat resistant material and the sheet of expandable material 13. Featuring a firewall. 2. The firewall as claimed in claim 1, wherein the panel comprises a heat insulating material. The firewall of claim 2 wherein the thermal insulation material is a porous thermal insulation material. The firewall as claimed in claim 1, wherein the panel is contained within the envelope. 5. The firewall as claimed in claim 4 wherein the foreskin is selected from glass fiber fabric, aluminum sheet and composites thereof. The firewall as claimed in claim 1, wherein the panel is fixed to the flat member by means of an adhesive. 7. Firewall according to claim 6, wherein the adhesive (11) is selected from a thermally activated adhesive and a pressure sensitive adhesive. 8. Firewall according to claim 6 or 7, characterized in that the adhesive (11) is provided between the planar member (1) and the panel (9). The firewall as claimed in claim 1, wherein the expandable material is mounted on a tape. 10. Firewall according to claim 9, characterized in that the tape (13) implementing the intumescent material is a self adhesive. The firewall as claimed in claim 1, wherein the expandable material covers the contact surface of the flange and the sides of the C-shaped member. 12. Firewall according to one of the preceding claims, characterized in that the resilient retaining means (15) comprise a sheet-like spring member. 13. The firewall as claimed in claim 12, wherein the spring member (15) comprises a curved portion (19, 27) that develops around the free end of the flange (7) to hold the spring member in place. 14. A firewall as claimed in claim 13, wherein the curved portion (19, 27) is provided for holding the expandable material (13) with respect to the flange (7). 15. The firewall as claimed in claim 13 or 14, characterized in that it is provided between the curved portion and the free end of the flange (7) to provide an elongate portion (27) supporting the panel (9). 16. The spring member (15) according to claim 12, characterized in that the spring member (15) comprises a laterally deployed portion (21) biased against the panel (9) to support the same. Firewall. 17. The firewall as claimed in claim 12, wherein the spring member (15) comprises a V-shaped portion (17) that extends over the C-shaped member (3). 17. The spring member 15 according to any one of claims 12 to 16, wherein the spring member 15 comprises a lid portion 23 which extends over the C-shaped member and is curved by an outwardly inclined portion 25. 19) a firewall, characterized in that combined with. 19. Firewall according to any one of the preceding claims, characterized in that a weatherproof cover is provided for the panel (9). 20. The firewall of claim 19 wherein the weatherproof cover is formed of metal.

Images