Fireproof penetrating joint of fireproof metal composite board wall

Abstract

The utility model discloses a fireproof penetrating node of a fireproof metal composite board wall, which relates to the technical field of nuclear island plant firewalls and comprises a fireproof metal composite board wall and a fireproof plugging module, and the fireproof plugging module comprises metal fasteners arranged on two sides and fireproof plugging materials arranged on the inner side. A fireproof plate wall closing-up piece is arranged on the outer side of the fireproof plugging material for edge sealing, so that the stability of combination of the sealant and the wall body is improved; a fireproof valve is installed in the air pipe and used for switching the ventilation state or the blocking state in the air pipe. The fireproof plugging module composed of the metal fastening piece, the fireproof plugging material and the fireproof board wall closing-up piece has good flame retardance and heat insulation performance, the fireproof performance of the penetrating positions of an air pipe, a cable and the like on the fireproof metal composite board wall can be improved, and a fireproof barrier of a nuclear island is more reliable and effective; meanwhile, the fireproof valve is installed in the air pipe, fire spreading can be blocked when a fire occurs, and the fire blocking effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear island plant fire walls, in particular to a fireproof penetration node of a fireproof metal composite plate wall. Background Art

[0002] As a clean energy source, nuclear power has become a major development direction in today's energy sector. Nuclear power safety is a top priority in nuclear power plant construction, and fire, water, earthquake, and explosion resistance are all key performance indicators for nuclear power plant buildings and structures. Firewall systems are widely used in nuclear islands. Their structure, from the inside out, generally consists of a wall skeleton structure, fire-resistant insulation panels, metal composite panels, and stainless steel plates. For example, patent CN 204826313U describes a detachable, impact-resistant composite firewall system. This solution utilizes a composite double-layer structure that meets fire, water, and impact strength requirements, and offers flexible and removable installation. It is primarily used as a partition system in specialized areas of nuclear power plant buildings.

[0003] The fireproof metal composite panel wall located at the boundary of the firewall system has corresponding fire resistance limit requirements (such as not less than 3 hours). When cables need to pass through the wall, cable brackets and steel pipes need to be installed to facilitate cable laying, which requires the provision of through holes in the firewall system. However, the through nodes such as air ducts and cables on the fireproof metal composite panel wall cannot meet the corresponding fire resistance requirements due to the lack of fireproof structures that meet the same requirements. This will lead to the failure of the fire barrier and the spread of fire, posing a safety hazard. Utility Model Content

[0004] In response to one or more deficiencies in the above-mentioned prior art, the utility model provides a fireproof penetration node of a fireproof metal composite panel wall, which can improve the fireproof performance of the air duct penetration point on the fireproof metal composite panel wall, meet the fireproof requirement of not less than three hours of fire resistance limit at the penetration point of the fireproof metal composite panel wall, make the fire barrier of the nuclear island more reliable and effective, and help to block the spread of fire, further improving the fire blocking effect.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fireproof sealing penetration node for a fireproof metal composite panel wall, used for an opening where an air duct passes through the fireproof metal composite panel wall, comprising a fireproof metal composite panel wall and a fireproof sealing module disposed between the fireproof metal composite panel wall and the outer wall of the penetration member. The fireproof sealing module comprises metal fasteners disposed on both sides and a fireproof sealing material on the inside. The outer side of the fireproof sealing material is provided with a fireproof panel wall closing piece for edge sealing to improve the stability of the bond between the sealant and the wall.

[0007] A fire damper is installed in the air duct to switch the ventilation or blocking state inside the air duct.

[0008] As a further implementation method, the fire damper is arranged along the axial direction inside the air duct. When a fire occurs, the fire damper automatically closes to prevent the fire from spreading through the ventilation duct.

[0009] As a further implementation method, the metal fasteners are L-shaped angle steels, which are fixedly installed around the opening of the fireproof metal composite panel wall to form a metal skeleton, providing support for the internal fireproof sealing material to prevent it from excessive deformation.

[0010] As a further implementation method, the distance between the L-shaped angle steels can be adjusted according to the diameter of the air duct, thereby ensuring that the metal frame is close to the air duct and limiting the displacement of the air duct.

[0011] As a further implementation method, the L-shaped angle steel is fixedly connected to the fireproof metal composite panel wall by self-tapping bolts.

[0012] As a further implementation method, the fireproof board wall closing piece adopts U-shaped channel steel, which is arranged at the penetration point of the fireproof metal composite board wall to form a mortise and tenon cavity.

[0013] As a further implementation method, the fireproof sealing material is a high-density silicone sealant, which is filled in the mortise and tenon cavity. The sealant has good flexibility and fireproof performance, and can maintain sealing when the air duct or cable vibrates or expands and contracts due to heat, preventing flames and smoke from spreading through the gaps.

[0014] As a further implementation method, the surface of the U-shaped channel steel is galvanized to improve its corrosion resistance and service life.

[0015] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0016] 1. The utility model adopts a fireproof sealing module composed of metal fasteners, fireproof sealing materials and fireproof board wall closing parts, which has good flame retardancy and heat insulation, and can improve the fireproof performance of the penetration points of air ducts, cables, etc. on the fireproof metal composite board wall, meet the fireproof requirement of not less than three hours of fire resistance limit at the penetration points of the fireproof metal composite board wall, and make the fire barrier of the nuclear island more reliable and effective; at the same time, a fire damper is installed in the air duct, which can block the spread of fire when a fire occurs, further improve the fire blocking effect, and improve safety.

[0017] 2. The fireproof board wall closing parts of the utility model use U-shaped galvanized channel steel to seal the wall edge, which can effectively improve the stability of the internal filling sealant and the wall structure. The U-shaped channel steel structure is simple and has good integrity.

[0018] 3. In the present invention, a metal frame is formed by installing L-shaped angle steel at the penetration hole. The metal frame and sealant form a dynamic seal, which can maintain sealing when the penetration parts such as air ducts and cables vibrate or expand and contract due to heat, preventing flames and smoke from spreading through the gaps. At the same time, it can be limited to prevent excessive deformation of the sealant, thereby ensuring the stability of the fire-proof penetration node and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0020] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model.

[0021] In the figure: 1. Self-tapping bolts; 2. U-shaped channel steel; 3. L-shaped angle steel; 4. Fireproof sealing material; 5. Air duct; 6. Fire damper; 7. Fireproof board; 8. Metal composite panel. DETAILED DESCRIPTION

[0022] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0023] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] Example 1

[0025] In a typical embodiment of the present application, a fireproof penetration node of a fireproof metal composite panel wall is provided, which is used for the position where the air duct penetrates the fireproof metal composite panel wall, such as Figure 1As shown, it includes a fireproof metal composite panel wall and a fireproof sealing module arranged between the fireproof metal composite panel wall and the outer wall of the air duct, the fireproof sealing module includes metal fasteners arranged on both sides and a fireproof sealing material on the inside, and the outer side of the fireproof sealing material is provided with a fireproof panel wall closing piece for edge sealing to improve the stability of the combination of the fireproof sealing material and the wall; a fire damper is installed in the air duct for switching the ventilation or blocking state inside the air duct.

[0026] Specifically, this embodiment takes ventilation ducts as an example to illustrate the coordination of fire penetration nodes with existing fire wall systems to make the entire fire barrier of the nuclear island more complete and effective. Figure 1 As shown, the fireproof metal composite panel wall includes two layers, an inner fireproof panel 7 and an outer metal composite panel 8. A fireproof sealing module is provided between the fireproof metal composite panel wall and the outer wall of the air duct 5. The fireproof sealing module is composed of metal fasteners, fireproof sealing materials and fireproof panel wall closing parts. In this embodiment, the metal fasteners are a number of L-shaped angle steels 3, which are installed around the opening of the fireproof metal composite panel wall and fixedly connected to the fireproof metal composite panel wall by self-tapping bolts 1. The inner fireproof sealing material 4 uses high-density silicone sealant with a total thickness of not less than 290 mm to ensure the fire blocking effect; the fireproof panel wall closing part is provided on the outside of the fireproof sealing material 4, and the fireproof panel wall closing part is a U-shaped channel steel 2.

[0027] Specifically, if Figure 1 As shown, a plurality of L-shaped angle steels 3 are provided on the outer side of the entire fireproof sealing module to form a metal skeleton, and the metal skeleton and high-density silicone sealant are combined to form a dynamic seal, wherein the high-density silicone sealant has good flexibility and fireproof performance, and can maintain sealing when the air duct or cable vibrates or expands and contracts due to heat, thereby preventing flames and smoke from spreading through the gaps. The metal skeleton formed by the L-shaped angle steels 3 can provide support for the high-density silicone sealant on the inside to prevent it from excessive deformation. In addition, the distance between each L-shaped angle steel can be adjusted according to the diameter of the air duct, thereby ensuring that the metal skeleton is close to the air duct and limiting the displacement of the air duct. Of course, in other embodiments, in addition to the scenario where the air duct passes through the fireproof metal plate wall, the dynamic sealing method formed by the combination of the metal skeleton and the high-density silicone sealant in this example can also be applied to the holes formed by other penetrations such as cables, water supply and drainage pipes passing through the fireproof metal composite plate wall for fireproof sealing, thereby improving the integrity and safety of the entire nuclear island fire protection system.

[0028] Specifically, if Figure 1 As shown, U-shaped channel steel 2 is used as a closing piece to seal the wall at the penetration point of the fireproof metal composite panel wall. A mortise and tenon cavity is formed on the inner side of the U-shaped channel steel 2, and the cavity is filled with high-density silicone sealant. The use of U-shaped channel steel closing can further improve the stability of the combination of high-density silicone sealant and the wall, thereby effectively realizing fireproof sealing at the air duct and playing a flame retardant and heat insulating role.

[0029] In this embodiment, in order to ensure the mechanical strength of the connection node, the L-shaped angle steel and the U-shaped channel steel are made of Q235 steel; at the same time, the L-shaped angle steel and the U-shaped channel steel are galvanized to improve their corrosion resistance and service life.

[0030] In addition, considering that when a fire occurs, the fire may spread rapidly along the inside of the air duct and become difficult to control, in this embodiment, a fire damper 6 is installed inside the air duct along the axial direction. Under normal circumstances, the fire damper is open to ensure the ventilation function of the air duct; when a fire occurs, the fire damper automatically closes, thereby preventing the fire from spreading through the ventilation duct, further improving the fire blocking effect, and improving the safety of fire blocking at the penetration nodes in the firewall system.

[0031] It should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Those skilled in the art will appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A fireproof penetration node of a fireproof metal composite panel wall, characterized in that: It includes a fireproof metal composite panel wall and a fireproof blocking module arranged between the fireproof metal composite panel wall and the outer wall of the air duct. The fireproof blocking module includes metal fasteners arranged on both sides and a fireproof blocking material on the inside. The outer side of the fireproof blocking material is provided with a fireproof panel wall closing piece for edge sealing; A fire damper is installed in the air duct to switch the ventilation or blocking state inside the penetration piece.

2. A fireproof penetration node of a fireproof metal composite panel wall according to claim 1, characterized in that: The fire damper is arranged inside the air duct along the axial direction.

3. The fireproof penetration node of a fireproof metal composite panel wall according to claim 1, characterized in that: The metal fasteners are L-shaped angle steels, which are fixedly installed around the opening of the fireproof metal composite panel wall to form a metal skeleton, providing support for the internal fireproof sealing material.

4. A fireproof penetration node of a fireproof metal composite panel wall according to claim 3, characterized in that: The distance between the L-shaped angle steels can be adjusted according to the diameter of the air duct.

5. The fireproof penetration node of a fireproof metal composite panel wall according to claim 3, characterized in that: The L-shaped angle steel is fixedly connected to the fireproof metal composite panel wall by self-tapping bolts.

6. The fireproof penetration node of a fireproof metal composite panel wall according to claim 1, characterized in that: The fireproof board wall closing piece adopts U-shaped channel steel and is arranged at the penetration position of the fireproof metal composite board wall to form a mortise and tenon cavity.

7. A fireproof penetration node of a fireproof metal composite panel wall according to claim 6, characterized in that: The fireproof sealing material is a high-density silicone sealant, which is filled in the mortise and tenon cavity.

8. The fireproof penetration node of a fireproof metal composite panel wall according to claim 6, characterized in that: The surface of the U-shaped channel steel is galvanized.

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