Fireproof door frame sleeve structure of offset channel

Abstract

The invention discloses a fireproof door frame sleeve structure of an offset channel. The fireproof door frame sleeve structure is arranged on a cabin wall. A coaming is fixedly arranged on the bulkhead, and a side wall plate is fixedly arranged on the coaming; the coaming and the side wall plates are positioned on the same side of the bulkhead; a fireproof door hole for mounting a fireproof door is formed in the side wall plate; a passing hole is formed in the area, defined by the coaming, of the bulkhead. The device is easy to mount and dismount and convenient to replace.

Description

Technical Field

[0001] This invention relates to the field of marine technology, and in particular to an offset passage fireproof door frame structure. Background Technology

[0002] The main structural components of the hull, particularly the longitudinal and transverse bulkheads, play a crucial role in the strength of the hull beams and the ship's stability. Furthermore, the bulkhead structure is essential for supporting large installations and deck equipment. However, depending on the ship's use and operational requirements, the hull must be divided into corresponding independent functional areas based on the main bulkheads. The connections between these areas must be secured with passageway closure devices according to safety requirements, i.e., fire doors must be installed between spaces of different fire resistance ratings.

[0003] The current situation is that fire doors typically have square frames, requiring square openings for installation on the main hull bulkheads. However, for the main hull, which serves as a crucial longitudinal structure or a transverse bulkhead supporting heavy equipment under high loads, regulations prohibit square-cornered openings. Ship codes require that openings on critical main hull bulkheads must have appropriate rounded corners to reduce the impact of stress concentration. From a structural design perspective, square right-angled openings on load-bearing components should also be avoided, as stress concentration points can easily lead to structural damage and even failure. Furthermore, even if specially customized door frames with rounded corners are installed on heavily loaded bulkheads, these doors will still be affected by the deformation of the load-bearing bulkheads, leading to door deformation and damage, and even malfunctions in opening and closing. The only solutions in terms of layout are detours or the addition of independent buffer zones, which not only occupy or waste relatively limited usable space but also significantly increase material consumption.

[0004] For example, it is clearly inappropriate to install right-angle fire doors in the midship longitudinal bulkhead of the main hull, which bears the loads of the hull beams and supports the crane cylinders, due to the high stress levels and the prohibition by regulations. However, if passage is not possible at this location, taking a detour or adding a buffer zone to the equipment room would significantly increase material consumption and reduce the effective utilization space of the equipment room, resulting in insufficient space for equipment placement.

[0005] Currently, the utilization of space within the main hull is crucial for the realization of ship functions, especially for engineering vessels engaged in offshore operations. The restriction that main support bulkheads cannot have square door openings affects the efficiency and rationality of the layout. Furthermore, the installation of certain specialized equipment makes openings in the main bulkheads unavoidable. To meet design specifications, methods such as adding auxiliary transition spaces are not only detrimental to accessibility and efficiency but also increase material consumption and occupy unnecessary space. Summary of the Invention

[0006] In order to overcome the above-mentioned defects in the existing technology, the present invention provides an offset passage fire door frame structure.

[0007] The present invention solves the above-mentioned technical problems through the following technical solution:

[0008] An offset passage fireproof door frame structure is provided on the bulkhead; a surrounding panel is fixed on the bulkhead, and a side wall panel is fixed on the surrounding panel; the surrounding panel and the side wall panel are located on the same side of the bulkhead; a fireproof door hole for installing a fireproof door is opened on the side wall panel; and a passage hole is opened in the area enclosed by the surrounding panel on the bulkhead.

[0009] Furthermore, the bulkhead is the main carrier of external loads.

[0010] Furthermore, the passage hole is a hole without right angles.

[0011] Furthermore, the passage hole is a rounded hole or an elliptical hole.

[0012] Furthermore, the fire door opening is a rectangular opening.

[0013] Furthermore, the sidewalls are parallel to the bulkhead.

[0014] Furthermore, the cofferdam is perpendicular to the bulkhead.

[0015] Furthermore, the enclosure panels are distributed circumferentially around the passageway, and the enclosure panels and sidewall panels form a closed area that can prevent fire from entering the passageway.

[0016] Furthermore, the enclosure panels form a rectangular area.

[0017] Furthermore, the sidewall panels are rectangular.

[0018] The beneficial effects of this invention are as follows: This invention employs an offset door frame sleeve structure, shifting the door frame sleeve structure to one side of the fire door's opening direction, thus preventing the fire door from being affected by the stress on the corresponding bulkhead. The offset door frame sleeve structure achieves fire separation; under supported stress, the bulkhead has passage holes without right angles, meeting regulatory requirements and reducing stress concentration. Furthermore, the door frame sleeve structure has a very small enclosing depth, not affecting the layout and requiring minimal material. This rationally solves a difficult problem in ship design and construction. In this invention, the fire door frame sleeve structure is offset to one side of the bulkhead, increasing the flexibility of the ship's layout and improving space utilization. This invention makes it simple and easy to set up safe fireproof passages on the main bulkheads of a ship. This invention is easy to install, disassemble, and replace. This invention can also be used to install closing devices on large equipment such as heavy-duty crane cylinders, which is easily implemented. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0020] Figure 2This is a schematic diagram of the structure after removing the side wall panels in a preferred embodiment of the present invention. Detailed Implementation

[0021] The present invention will be described more clearly and completely below with reference to a preferred embodiment and the accompanying drawings.

[0022] like Figure 1 and Figure 2 As shown, an offset passage fireproof door frame structure is provided on a bulkhead 10; the bulkhead 10 is the main carrier of external loads. In this embodiment, the bulkhead 10 is the longitudinal bulkhead of the main hull that bears the load of the hull beams and supports the load of the crane cylinder.

[0023] A cofferdam 11 is fixed on the bulkhead 10, and a sidewall 12 is fixed on the cofferdam 11; the cofferdam 11 and the sidewall 12 are located on the same side of the bulkhead 10.

[0024] The sidewall 12 is parallel to the bulkhead 10; the cofferdam 11 is perpendicular to the bulkhead 10.

[0025] The side wall panel 12 has a fire door hole 13 for installing a fire door; the fire door hole 13 is a rectangular hole.

[0026] The bulkhead 10 has passage openings 14 within the area enclosed by the cofferdam.

[0027] The passage hole 14 is a hole without right angles. The passage hole is a hole with rounded corners or an elliptical hole.

[0028] The enclosure 11 is distributed circumferentially around the passageway. The enclosure 11 and the side wall 12 form a closed area that can prevent fire from entering the passageway.

[0029] The enclosure panel 11 forms a rectangular area. The side wall panel 12 is a rectangular panel.

[0030] Fire doors are installed inside the fire door openings. In use, the fire doors are opened, connecting the passageway and the fire door openings, allowing passage through both sides of the bulkhead.

[0031] This invention employs an offset door frame sleeve structure, shifting the door frame sleeve structure to one side of the fire door's opening direction, thus preventing the fire door from being affected by the stress on the corresponding bulkhead. The offset door frame sleeve structure achieves fire separation; under supported stress, the bulkhead has passageways without right angles, satisfying regulatory requirements while reducing stress concentration. Furthermore, the door frame sleeve structure has a very shallow cofferdam, which does not affect the layout and requires minimal material. This effectively solves a major challenge in ship design and construction.

[0032] In this invention, the fireproof door frame structure is offset to one side of the bulkhead, which increases the flexibility of the layout and improves the space utilization rate during ship design and layout.

[0033] This invention simplifies and facilitates the installation of safe fire-resistant passageways on the main bulkheads of ships. It is also easy to install, disassemble, and replace.

[0034] This invention can also be used to install a closing device on the cylinder of large equipment such as heavy-duty cranes, which is easy to implement.

[0035] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. An offset passage fireproof door frame structure, which is disposed on the bulkhead; characterized in that, The bulkhead is fixed with a cofferdam, and the cofferdam is fixed with a sidewall panel; the cofferdam and the sidewall panel are located on the same side of the bulkhead; the sidewall panel has a fire door opening for installing a fire door; the bulkhead has a passage opening in the area enclosed by the cofferdam.

2. The offset passage fireproof door frame structure as described in claim 1, characterized in that, The bulkhead is the main carrier of external loads.

3. The offset passage fireproof door frame structure as described in claim 1, characterized in that, A passage hole is a hole that does not have right angles.

4. The offset passage fireproof door frame structure as described in claim 3, characterized in that, The passage hole is either a rounded hole or an elliptical hole.

5. The offset passage fireproof door frame structure as described in claim 1, characterized in that, The fire door opening is rectangular.

6. The offset passage fireproof door frame structure as described in claim 1, characterized in that, The sidewalls are parallel to the bulkhead.

7. The offset passage fireproof door frame structure as described in claim 1, characterized in that, The cofferdam is perpendicular to the bulkhead.

8. The offset passage fireproof door frame structure as described in claim 7, characterized in that, The enclosure panels are distributed circumferentially around the passageway, and the enclosure panels and side wall panels form a closed area that can prevent fire from entering the passageway.

9. The offset passage fireproof door frame structure as described in claim 8, characterized in that, The enclosure boards form a rectangular area.

10. The offset passage fireproof door frame structure as described in claim 9, characterized in that, The side wall panels are rectangular.

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