A fireproof sealing structure for a flexible fireproof protective cover cable penetration opening

Abstract

The utility model relates to fireproof cover technical field, concretely for a kind of fireproof plugging structure for flexible fireproof protective cover cable penetration opening, including fireproof cover panel, the inside and outside of fireproof cover panel is equipped with inner plugging module, outer plugging module and cable fireproof protective sleeve respectively, the inside of fireproof cover panel is equipped with inner plugging module, the inner plugging module includes substrate one, the outside of fireproof cover panel is equipped with outer plugging module, the outer plugging module includes substrate two and cylindrical pipe, the cylindrical pipe is fixed in one end of substrate two and is communicated, the cable fireproof protective sleeve is sleeved in the middle part of cylindrical pipe, the both sides of inner plugging module and outer plugging module middle part are all self-locking and connected with heat preservation nail.The utility model solves the traditional flexible fireproof protective cover cable penetration hole usually adopts the mode of early reserved hole or on-site slit penetration to realize, there are many problems in actual use.

Description

Technical Field

[0001] This utility model relates to the field of fireproof cover technology, specifically a fireproof sealing structure for cable penetration openings of flexible fireproof protective covers. Background Technology

[0002] A flexible fireproof protective cover is a closed box-type structure mainly used to protect valve actuators so that they can operate normally in a fire. The actuator usually has several external cables that provide power and control signals to the actuator. Typically, the external cables of the actuator need to penetrate the fireproof protective cover panel before being connected to the fireproof protective cover. The fireproof sealing structure of the cable penetration opening of the flexible fireproof protective cover is a device used to prevent the spread of flames through the cable penetration opening. It is usually composed of a variety of fireproof materials and components.

[0003] Traditional methods for creating cable penetration holes in flexible fireproof protective covers typically involve pre-drilling holes or on-site slits, which have several shortcomings in practical use. For example, if the on-site wiring conditions are unclear, pre-drilled interfaces cannot be designed in the required locations, rendering the pre-drilled holes ineffective. Furthermore, on-site slit treatment also presents problems; cables penetrating through the slits can affect the sealing of the fireproof protective cover, thus compromising its fire resistance. Therefore, we propose a fireproof sealing structure for cable penetration holes in flexible fireproof protective covers. Utility Model Content

[0004] One of the technical problems that this application aims to solve is that the cable penetration holes of traditional flexible fireproof protective covers are usually achieved by pre-reserving holes or opening slits on site, which has many shortcomings in actual use.

[0005] To address the aforementioned technical problems, this application provides a fireproof sealing structure for cable penetration openings in a flexible fireproof protective cover, comprising a fireproof cover panel. The fireproof cover panel has an inner sealing module, an outer sealing module, and a cable fireproof protective sleeve on its inner and outer sides, respectively. The inner sealing module on the inner side of the fireproof cover panel includes a base plate one. The outer sealing module on the outer side of the fireproof cover panel includes a base plate two and a cylindrical tube. The cylindrical tube is fixed to one end of the base plate two. The cable fireproof protective sleeve is fitted over the middle of the cylindrical tube. Insulating nails are self-lockingly connected to both sides of the middle portion of both the inner and outer sealing modules. Self-locking plates are provided on both sides of the lower middle portion of the outer sealing module. One end of each of the two insulating nails passes through both sides of the fireproof cover panel and is self-lockingly connected to the self-locking plates.

[0006] In some embodiments, the fireproof cable sheath includes a heat insulation layer and a protective outer layer, wherein the heat insulation layer is sewn onto the outside of the protective outer layer.

[0007] In some embodiments, the inner sealing module, the outer sealing module, and the fireproof cover panel are all provided with cable through holes in the middle, and the fireproof cable protection sleeve and the cable through holes are connected.

[0008] In some embodiments, the inner sealing module, the outer sealing module, and the cable fireproof protection sleeve are all provided with a cable body in the middle, and the cable fireproof protection sleeve and the outer side of one end of the outer sealing module and the cable fireproof protection sleeve are all provided with a pull buckle strap.

[0009] In some embodiments, the inner sealing module and the outer sealing module each include a fireproof outer layer and a heat-insulating inner layer, and the fireproof outer layer is sewn to the outside of the heat-insulating inner layer.

[0010] This utility model has at least the following beneficial effects:

[0011] 1. This utility model offers strong on-site adaptability, flexible installation, and guaranteed sealing. The structure allows for the creation of cable penetrations on-site based on the actual number and location of the valve actuator's external cables, eliminating the need for pre-set holes. This precisely matches cable access requirements in different scenarios, avoiding sealing gap issues caused by mismatches between pre-drilled holes and actual needs. Simultaneously, the locking of the insulation nails and self-locking plates, along with the tightening of the pull-tab straps, tightly secures the internal and external components into a unified whole, ensuring gap-free connections after installation, balancing flexibility and sealing.

[0012] 2. When in use, this utility model provides comprehensive fire protection and high reliability. It can form a multi-layered protective system, covering everything from flame blocking to high-temperature insulation. The double-layered fireproof and heat-insulating materials of the outer and inner sealing modules, as well as the fire-expanding carbonization and low thermal conductivity design of the cable protection sleeve, can effectively block the spread of flames through the penetration opening and cable, providing a solid guarantee for the normal operation of the actuator under fire conditions. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0014] Figure 2 This is a disassembled diagram showing the connection relationship between the inner sealing module, the outer sealing module, and the fireproof cover panel of this utility model;

[0015] Figure 3 This is a structural diagram of the fireproof cable protection sleeve of this utility model;

[0016] Figure 4 This is a structural diagram of the inner sealing module and the outer sealing module of this utility model.

[0017] In the diagram: 1. Inner sealing module; 2. Outer sealing module; 3. Cable fireproof protective sleeve; 4. Buckle strap; 5. Cable body; 6. Fireproof cover panel; 7. Insulation nail; 8. Self-locking plate; 10. Cable perforation; 11. Substrate 1; 12. Fireproof outer layer; 13. Insulating inner layer; 21. Substrate 2; 22. Cylindrical tube; 31. Insulating layer; 32. Protective outer layer. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1: Please refer to Figure 1 - Figure 4 This utility model provides a technical solution: a fireproof sealing structure for cable penetration openings in a flexible fireproof protective cover, comprising a fireproof cover panel 6, with an inner sealing module 1, an outer sealing module 2, and a cable fireproof protective sleeve 3 respectively disposed on the inner and outer sides of the fireproof cover panel 6. The inner sealing module 1 is disposed on the inner side of the fireproof cover panel 6 and includes a base plate 11. The outer sealing module 2 is disposed on the outer side of the fireproof cover panel 6 and includes a base plate 21 and a cylindrical tube 22. The cylindrical tube 22 is connected and fixed to one end of the base plate 21. The cable fireproof protective sleeve 3 is sleeved on the middle part of the cylindrical tube 22. The inner sealing module 1 and the outer sealing module 2 are connected and fixed to one end of the base plate 21. Both sides of the middle part of the sealing module 2 are self-locking connected with heat-insulating nails 7. Both sides of the lower middle part of the outer sealing module 2 are provided with self-locking pieces 8. One end of each of the two heat-insulating nails 7 passes through both sides of the fireproof cover panel 6 and is self-locking connected with the self-locking pieces 8. The middle of the inner sealing module 1, the outer sealing module 2 and the cable fireproof protection sleeve 3 are all provided with cable bodies 5. The outer side of the connection between the cable fireproof protection sleeve 3 and the outer sealing module 2 and the outer side of the cable fireproof protection sleeve 3 are provided with pull buckle straps 4. The inner sealing module 1 and the outer sealing module 2 respectively include a fireproof outer layer 12 and a heat-insulating inner layer 13. The fireproof outer layer 12 is sewn to the outer side of the heat-insulating inner layer 13.

[0020] In this embodiment, the inner sealing module 1 and the outer sealing module 2 work together to form a double fire barrier at the cable penetration opening of the flexible fireproof protective cover. Both the inner sealing module 1 and the outer sealing module 2 adopt a double-layer structure design with a fireproof outer layer 12 and a heat-insulating inner layer 13. The fireproof outer layer 12 is a glass fiber base cloth coated with a silicone rubber fireproof coating, which can directly resist external flame attack and prevent flames from spreading through the penetration opening gap. The heat-insulating inner layer 13 is a 10 mm ceramic fiber blanket, which can effectively reduce the penetration of external heat into the protective cover and prevent the actuator from being damaged by high temperature. At the same time, the cable fireproof protective sleeve 3, which is sleeved on the cylindrical tube 22, can further wrap and protect the cable body 5 that passes through the penetration opening, completely blocking the intrusion path of flames and high-temperature smoke, and ensuring the safe operation environment of the actuator inside the protective cover under fire conditions. The inner sealing module 1 is attached to the substrate 11. Inside the fireproof cover panel 6, the outer sealing module 2 is attached to the outer side of the panel by means of the cylindrical tube 22 and the base plate 21. Then, the insulation nail 7 passes through the fireproof cover panel 6 and is self-locked to the self-locking piece 8 to achieve a tight lock between the inner and outer modules. This not only ensures the stable connection between the sealing structure and the flexible fireproof protective cover, but also avoids the limitation of the flexible deformation of the protective cover by the traditional rigid sealing. When in use, the cable penetration hole can be opened on site according to the required location. Fireproof sealing treatment can be performed using this structure, which can effectively ensure the overall sealing and fireproof performance of the fireproof protective cover. The cable body 5 passes through the fireproof protective cover panel and is then wrapped with the cable fireproof protective sleeve 3. The outer cylindrical outer side of the outer sealing module 2 and the outer side of the cable fireproof protective sleeve 3 are provided with pull straps 4, which can be tightened after assembly, so that the panel, the outer sealing module 2 and the cable fireproof protective sleeve 3 form an integral structure.

[0021] Example 2: Figure 1 - Figure 2 As shown, the cable fireproof protective sleeve 3 includes a heat insulation layer 31 and a protective outer layer 32. The heat insulation layer 31 is sewn to the outside of the protective outer layer 32. The inner sealing module 1, the outer sealing module 2 and the fireproof cover panel 6 are all provided with cable through holes 10 in the middle. The cable fireproof protective sleeve 3 and the cable through holes 10 are connected.

[0022] In this embodiment, the cable fireproof protective sleeve 3 adopts a double-layer structure design with a heat insulation layer 31 and a protective outer layer 32. The heat insulation layer 31 is sewn to the outside of the protective outer layer 32, forming a fire barrier with clear primary and secondary layers. The heat insulation layer 31 is made of fluffy inorganic fiber felt, and its fluffy structure can form a large number of closed air cavities. Due to the low thermal conductivity of air, it significantly reduces the heat transfer efficiency and can effectively block the penetration of external high temperature into the cable and the protective sleeve. The protective layer is made of fiber cloth coated with an elastic fireproof coating. When exposed to fire, the elastic fireproof coating can quickly expand to form a dense carbonized layer, directly resisting flame attack. Meanwhile, the fiber cloth substrate gives the outer layer good flexibility and tear resistance, which can reduce the damage of mechanical external force to the inner heat insulation layer 31. This double-layer structure, together with the fireproof and heat insulation performance of the inner and outer sealing modules 2, forms a complete fire protection system from the external protection of the cable to the sealing of the penetration, which greatly reduces the risk of flames spreading through the cable and the penetration and significantly improves the overall fire protection reliability. The inner sealing module 1, the outer sealing module 2 and the fireproof cover panel 6 all have cable penetration holes 10 in the middle, which are connected to the cable fireproof protective sleeve 3 to ensure that the path of the cable from the outside to the inside of the protective cover is continuous and sealed.

[0023] Working principle:

[0024] like Figure 1 - Figure 4As shown, during use, cable perforations 10 are made on-site on the fireproof cover panel 6 of the flexible fireproof protective cover according to the number and location requirements of the external cables of the valve actuator. The inner sealing module 1 and outer sealing module 2 have pre-set cable perforations 10 of the same specification at the factory to ensure precise matching of the perforation position with the cable access path, avoiding sealing gap problems caused by mismatch between pre-drilled holes and actual requirements. Then, the inner sealing module 1 is attached to the inside of the fireproof cover panel 6 via the base plate 11, aligning the cable perforation 10 of the inner sealing module 1 with the panel perforation. Insulation nails 7 are then used to sequentially penetrate the base plate 11 of the inner sealing module 1, the fireproof cover panel 6, and the base plate 21 of the outer sealing module 2, finally connecting with the self-locking piece 8 pre-set at the lower end of the outer sealing module 2. By tightening the insulation nails 7, the inner sealing module 1 and the outer sealing module 2 are tightly pressed against the fireproof cover panel 6 from both the inside and outside of the panel. This not only achieves a stable connection between the inner and outer sealing modules 2 and the panel, but also eliminates the gaps between the three by utilizing the compression effect between the modules and the panel. The base plate 21 of the outer sealing module 2 is attached to the outside of the panel. The cylindrical tube 22 of the outer sealing module 2 passes through the panel perforation, ensuring that the cable perforation 10 of the outer sealing module 2 forms a continuous channel with the perforations of the panel and the inner sealing module 1, thus providing structural positioning for subsequent cable insertion and sealing. Subsequently, the cable body 5 that needs to be connected to the actuator is sequentially passed through the cable perforation 10 of the outer sealing module 2, the perforation of the fireproof cover panel 6, and the perforation of the inner sealing module 1, and finally connected to the actuator inside the flexible fireproof protective cover, completing the basic cable installation. Then, the pre-set pull straps 4 on the outside of the cylindrical tube 22 of the outer sealing module 2 and the outside of the cable fireproof protective sleeve 3 are tightened. The restraint force of the straps makes the cable fireproof protective sleeve 3 fit tightly against the surface of the cylindrical tube 22 and the cable body 5, eliminating the gap between the protective sleeve and the cylindrical tube 22, and between the protective sleeve and the cable. At the same time, the outer sealing module 2, the cable fireproof protective sleeve 3 and the fireproof cover panel 6 are integrated into a whole structure to avoid sealing failure caused by relative displacement of the components.

[0025] When a fire occurs, the fireproof outer layer 12 of the outer sealing module 2 can directly contact the external flames. The silicone rubber coating forms a dense carbonized layer when exposed to fire, preventing the flames from entering through the gaps between the outer sealing module and the panel and cables. Its heat-insulating inner layer 13 can block the transmission of high temperature to the inside of the panel, initially reducing the heat penetration efficiency. If a small amount of high-temperature smoke breaks through the outer sealing module, the fireproof outer layer 12 and the heat-insulating inner layer 13 of the inner sealing module 1 can form a protective barrier again, further blocking the flames and high temperature from entering the interior of the protective cover, thus building a double safety line for the actuator. The protective outer layer 32 of the cable fireproof protective sleeve 3 expands when exposed to fire to form a carbonized layer, blocking the spread of flames along the cable surface. The heat insulation layer 31 reduces the transmission of high temperature to the cable core through low thermal conductivity, avoiding the melting of the cable insulation layer and causing a short circuit, ensuring the stability of the actuator's power supply and control signals.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A fireproof sealing structure for cable penetration openings in a flexible fireproof protective cover, comprising a fireproof cover panel (6), wherein an inner sealing module (1), an outer sealing module (2), and a cable fireproof protective sleeve (3) are respectively provided on the inner and outer sides of the fireproof cover panel (6), characterized in that: The inner side of the fireproof cover panel (6) is provided with an inner sealing module (1), the inner sealing module (1) includes a base plate one (11), the outer side of the fireproof cover panel (6) is provided with an outer sealing module (2), the outer sealing module (2) includes a base plate two (21) and a cylindrical tube (22), the cylindrical tube (22) is connected and fixed to one end of the base plate two (21), the cable fireproof protection sleeve (3) is sleeved on the middle part of the cylindrical tube (22), the inner sealing module (1) and the outer sealing module (2) are both self-locking connected with heat insulation nails (7) on both sides of the middle part of the middle part of the outer sealing module (2), and the lower middle part of the outer sealing module (2) is provided with self-locking pieces (8) on both sides, and one end of the two heat insulation nails (7) respectively penetrates the two sides of the fireproof cover panel (6) and self-locking connected with the self-locking pieces (8).

2. The fireproof sealing structure for cable penetration openings in a flexible fireproof protective cover according to claim 1, characterized in that: The cable fireproof protective sleeve (3) includes a heat insulation layer (31) and a protective outer layer (32), wherein the heat insulation layer (31) is sewn to the outside of the protective outer layer (32).

3. The fireproof sealing structure for cable penetration openings in a flexible fireproof protective cover according to claim 2, characterized in that: The inner sealing module (1), the outer sealing module (2), and the fireproof cover panel (6) are all provided with cable through holes (10) in the middle, and the cable fireproof protective sleeve (3) and the cable through holes (10) are connected.

4. A fireproof sealing structure for cable penetration openings in a flexible fireproof protective cover according to claim 2, characterized in that: The inner sealing module (1), the outer sealing module (2) and the cable fireproof protective sleeve (3) are all provided with cable body (5) in the middle. The cable fireproof protective sleeve (3) and the outer sealing module (2) are provided with pull buckle straps (4) on the outer side of the connection between the cable fireproof protective sleeve (3) and the outer sealing module (2) and on the outer side of the cable fireproof protective sleeve (3).

5. A fireproof sealing structure for cable penetration openings in a flexible fireproof protective cover according to claim 1, characterized in that: The inner sealing module (1) and the outer sealing module (2) respectively include a fireproof outer layer (12) and a heat-insulating inner layer (13), wherein the fireproof outer layer (12) is sewn to the outside of the heat-insulating inner layer (13).

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