Mineral insulation super-flexible fireproof cable

Abstract

The utility model belongs to the technical field of fireproof cables, and discloses a mineral insulation super-flexible fireproof cable which comprises a plurality of wire bodies, an inner protection sleeve is jointly installed on the side walls of the wire bodies, a mineral protection layer is arranged on the side wall of the inner protection sleeve, an aluminum sleeve isolation layer is arranged on the side wall of the mineral protection layer, and a mineral insulation layer is arranged on the side wall of the aluminum sleeve isolation layer. The aluminum sleeve isolation layer is provided with a protection assembly used for prolonging the service life of the wire body. The fireproof cable has the effect of improving the fire resistance of the fireproof cable.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof cables, in particular to a mineral insulated super-flexible fireproof cable. Background Art

[0002] Traditional, top-grade flame-retardant and fire-resistant cables can only pass a static 900°C fire test for 90 minutes, which no longer meets the fire prevention and firefighting requirements of high-rise buildings (over 100 meters) and locations like subways, airports, and hospitals. Therefore, JCJ16-2008, the "Code for Electrical Design of Civil Buildings," explicitly stipulates the use of mineral-insulated cables in these exceptionally fire-resistant locations. Some domestic companies have improved upon BTTZ cables, producing flexible fire-resistant cables like YTTW and BTLY, which utilize welded copper and aluminum tubes. These cables share the common characteristic of utilizing metal tubes as the primary fireproofing component, meeting internationally advanced fire protection standards. However, these cables are not flexible enough during installation and installation, resulting in a poor user experience.

[0003] A TCG ceramic silicone rubber insulated cable is disclosed in the Chinese utility model patent with publication number CN203276895U. The cable includes a conductor, an insulation layer, an isolation layer and a tinned copper wire braided layer. At least one silver-plated conductor is extruded with an insulation layer of ceramic silicone rubber. The surface of the insulation layer is wrapped with an isolation layer of fire-resistant glass fiber tape. The isolation layer is covered with a tinned copper wire braided layer, and the whole constitutes a TCG ceramic silicone rubber insulated cable.

[0004] Regarding the above-mentioned related technologies, the inventors believe that the following defects exist: the above-mentioned cable has very good fire resistance through the cooperation between the tinned copper wire braided layer and the isolation layer. However, in actual use, the tinned copper wire braided layer is not flexible enough, and the use experience in actual installation is poor. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a mineral insulated super-flexible fireproof cable.

[0006] The above technical objectives of the present utility model are achieved through the following technical solutions: a mineral insulated super-flexible fire-resistant cable, comprising a plurality of conductor bodies, an inner protective sleeve being commonly installed on the side walls of the plurality of conductor bodies, a mineral protective layer being arranged on the side walls of the inner protective sleeve, an aluminum sheath isolation layer being arranged on the side walls of the mineral protective layer, and a protective component for extending the service life of the conductor body being arranged on the aluminum sheath isolation layer.

[0007] By adopting the above technical solution, mica is a general term for mica minerals. It is an aluminum silicate of metals such as potassium, aluminum, magnesium, iron, and lithium. They all have a layered structure and a monoclinic crystal system. Mica crystals have a layered structure inside, so they appear as flake crystals, mainly hexagonal flake crystals, and are characterized by insulation and high temperature resistance. The mineral protective layer and mineral fireproof layer made of mica have good fire resistance, and the overall texture is soft. It has excellent fire resistance and is very soft, providing a good user experience.

[0008] Furthermore, the protection assembly includes a PE waterproof layer arranged on the side wall of the aluminum sleeve isolation layer, a mineral fireproof layer arranged on the side wall of the PE waterproof layer, and an outer protective sleeve arranged on the side wall of the mineral fireproof layer.

[0009] By adopting the above technical solution, polyethylene (PE) is a thermoplastic resin produced by the polymerization reaction of ethylene monomers. Polyethylene is odorless, non-toxic, and waxy in feel. It has excellent low-temperature resistance, good chemical stability, is insoluble in common solvents at room temperature, has low water absorption, and possesses excellent electrical insulation. The PE waterproof layer made of PE has excellent insulation and water resistance, thus ensuring that the fire-resistant cable has excellent signal stability and water resistance, thereby improving the user experience for workers.

[0010] Furthermore, the conductor body includes a plurality of copper conductors twisted together, a mineral insulation layer wrapped around the plurality of copper conductors, and an insulating isolation layer arranged on a side wall of the mineral insulation layer.

[0011] Furthermore, the mineral insulation layer is a mineral insulation layer made of mica.

[0012] By adopting the above technical solution, the mineral insulation layer made of mica has good insulation and high temperature resistance, thereby reducing the probability of damage to the remaining conductor bodies when one of the conductor bodies catches fire, thereby improving the user experience of the cable.

[0013] Furthermore, glass fiber ropes are commonly installed on the side walls of the plurality of insulating isolation layers.

[0014] By adopting the above technical solution, glass fiber is an inorganic non-metallic material with excellent performance and a wide variety. Its advantages are good insulation, strong heat resistance, good corrosion resistance and high mechanical strength. The glass fiber rope made of glass fiber has good insulation and heat resistance, thereby reducing the probability of four conductors catching fire at the same time, thereby improving the user experience of the staff.

[0015] Furthermore, a mineral filling layer is provided on the inner wall of the inner protective sleeve.

[0016] By adopting the above technical solution, the mineral filling layer reduces the probability of open flames directly contacting the wire body, thereby effectively improving the fire resistance of the cable and further reducing the probability of signal interruption when the cable is exposed to open flames.

[0017] Furthermore, the insulating isolation layer is made of rubber.

[0018] Furthermore, the copper conductor is made of single crystal copper.

[0019] By adopting this technical solution, single-crystal copper, a high-purity, oxygen-free copper, is produced. Its entire copper rod is composed of a single grain, devoid of grain boundaries. This results in extremely high signal transmission performance. Copper conductors made from single-crystal copper offer excellent transmission efficiency, thereby minimizing the likelihood of interference with signals transmitted within the conductor.

[0020] In summary, the present invention has the following beneficial effects:

[0021] 1. In this application, mica is a general term for minerals in the mica family. It is an aluminum silicate of metals such as potassium, aluminum, magnesium, iron, and lithium. It has a layered structure and a monoclinic system. Mica crystals have a layered structure inside, so they are flaky crystals, mainly hexagonal flaky crystals, and are characterized by insulation and high temperature resistance. The mineral protective layer and mineral fireproof layer made of mica have good fire resistance, and the overall texture is soft. It has very good fire resistance and is very soft, providing a good user experience.

[0022] 2. In this application, polyethylene (abbreviated as PE) is a thermoplastic resin made by polymerization of ethylene monomers. Polyethylene is odorless, non-toxic, feels like wax, has excellent low-temperature resistance, good chemical stability, is insoluble in common solvents at room temperature, has low water absorption, and has excellent electrical insulation. The PE waterproof layer made of PE has good insulation and waterproof properties, which makes the fireproof cable have good signal stability and waterproofness, thereby improving the user experience of the staff;

[0023] 3. In this application, glass fiber is an inorganic non-metallic material with excellent performance and a wide variety. Its advantages are good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength. The glass fiber rope made of glass fiber has good insulation and heat resistance, thereby reducing the probability of four wire bodies catching fire at the same time, thereby improving the user experience of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the protection component and its connection structure of an embodiment of the utility model.

[0026] In the figure: 1. Wire body; 11. Copper conductor; 12. Mineral insulation layer; 13. Insulation isolation layer; 2. Inner protective sheath; 3. Mineral protective layer; 4. Aluminum sheath isolation layer; 5. Protective component; 51. PE waterproof layer; 52. Mineral fireproof layer; 53. Outer protective sheath; 6. Fiberglass rope; 7. Mineral filling layer. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] like Figure 1-2 As shown, the embodiment of the present application discloses a mineral insulated ultra-flexible fire-resistant cable, comprising a conductor body 1, an inner protective sheath 2, a mineral protective layer 3, an aluminum sheath isolation layer 4, a protective assembly 5, a glass fiber rope 6, and a mineral filling layer 7. The conductor body 1 includes a copper conductor 11, a mineral insulation layer 12, and an insulating isolation layer 13. A plurality of copper conductors 11 are provided and twisted together. The mineral insulation layer 12 is made of mica and is wrapped around the plurality of copper conductors 11. The insulating isolation layer 13 is provided on the side wall of the mineral insulation layer 12, and the insulating isolation layer 13 is made of rubber.

[0029] The mineral insulation layer 12 made of mica has good insulation and high temperature resistance, thereby reducing the probability of damage to the remaining conductor bodies 1 when one of the conductor bodies 1 catches fire, thereby improving the user experience of the cable.

[0030] The inner protective sleeve 2 is installed on the side walls of the multiple wire bodies 1. The mineral protective layer 3 is arranged on the side wall of the inner protective sleeve 2. The mineral protective layer 3 is made of mica, and the aluminum sleeve isolation layer 4 is arranged on the side wall of the mineral protective layer 3.

[0031] Protective assembly 5 is mounted on aluminum-sheathed isolation layer 4 to extend the service life of conductor body 1. It includes a PE waterproof layer 51, a mineral fireproof layer 52, and an outer protective sheath 53. PE waterproof layer 51 is made of PE and is mounted on the sidewalls of aluminum-sheathed isolation layer 4. Mineral fireproof layer 52 is made of mica and is mounted on the sidewalls of PE waterproof layer 51. Outer protective sheath 53 is mounted on the sidewalls of mineral fireproof layer 52 to protect conductor body 1.

[0032] Polyethylene (PE) is a thermoplastic resin made by polymerizing ethylene monomers. It is odorless, non-toxic, and waxy in feel. It has excellent low-temperature resistance, good chemical stability, is insoluble in common solvents at room temperature, has low water absorption, and offers excellent electrical insulation. The PE waterproof layer 51, made of PE, offers excellent insulation and water resistance, ensuring excellent signal stability and water resistance for fire-resistant cables, enhancing the user experience for workers.

[0033] The fiberglass ropes 6 are made of glass fiber and are installed together on the side walls of the multiple insulating isolation layers 13. Glass fiber is an inorganic non-metallic material with excellent performance and comes in a wide variety. Its advantages include good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength. The fiberglass ropes 6 made of glass fiber have excellent insulation and heat resistance, thereby reducing the probability of four conductor bodies 1 catching fire simultaneously, thereby improving the user experience of the personnel.

[0034] The mineral filling layer 7 is made of mica and is disposed on the inner wall of the inner protective sheath 2. The mineral filling layer 7 reduces the probability of an open flame directly contacting the conductor body 1, thereby effectively improving the fire resistance of the cable and further reducing the probability of signal interruption when the cable is exposed to an open flame.

[0035] To minimize interference with signals transmitted within the conductor body 1, the copper conductor 11 is made of single-crystal copper. Single-crystal copper is a high-purity, oxygen-free copper material whose entire copper rod consists of a single grain, devoid of grain boundaries. This provides exceptionally high signal transmission performance. This single-crystal copper conductor 11 exhibits excellent transmission efficiency, minimizing interference with signals transmitted within the conductor body 1.

[0036] The operating principle of a mineral-insulated ultra-flexible fireproof cable in this embodiment is as follows: Mica is a general term for minerals in the mica family. It is an aluminum silicate of metals such as potassium, aluminum, magnesium, iron, and lithium, all of which have a layered structure and a monoclinic crystal system. Mica crystals have a layered structure internally, resulting in flaky crystals, mainly hexagonal flaky crystals, with the characteristics of insulation and high temperature resistance. The mineral protective layer 3 and mineral fireproof layer 52 made of mica have good fire resistance and an overall soft texture. They have excellent fire resistance and are very soft, providing a good user experience.

[0037] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A mineral insulated ultra-flexible fireproof cable comprising a plurality of conductor bodies (1), characterized in that: An inner protective sleeve (2) is commonly installed on the side walls of the plurality of wire bodies (1); a mineral protective layer (3) is provided on the side wall of the inner protective sleeve (2); an aluminum sleeve isolation layer (4) is provided on the side wall of the mineral protective layer (3); and a protective component (5) for extending the service life of the wire body (1) is provided on the aluminum sleeve isolation layer (4).

2. The mineral insulated super flexible fireproof cable according to claim 1, characterized in that: The protective assembly (5) comprises a PE waterproof layer (51) arranged on the side wall of the aluminum sleeve isolation layer (4), a mineral fireproof layer (52) arranged on the side wall of the PE waterproof layer (51), and an outer protective sleeve (53) arranged on the side wall of the mineral fireproof layer (52).

3. The mineral insulated super flexible fireproof cable according to claim 2, characterized in that: The conductor body (1) comprises a plurality of copper conductors (11) twisted together, a mineral insulation layer (12) wrapped around the plurality of copper conductors (11), and an insulating isolation layer (13) arranged on the side wall of the mineral insulation layer (12).

4. The mineral insulated super-flexible fire-resistant cable according to claim 3, characterized in that: The mineral insulation layer (12) is a mineral insulation layer (12) made of mica.

5. The mineral insulated super flexible fireproof cable according to claim 4, characterized in that: Glass fiber ropes (6) are commonly installed on the side walls of the plurality of insulating isolation layers (13).

6. The mineral insulated super-flexible fire-resistant cable according to claim 5, characterized in that: A mineral filling layer (7) is provided on the inner wall of the inner protective sleeve (2).

7. The mineral insulated super flexible fireproof cable according to claim 6, characterized in that: The insulating isolation layer (13) is an insulating isolation layer (13) made of rubber.

8. The mineral insulated super-flexible fire-resistant cable according to claim 7, characterized in that: The copper conductor (11) is a copper conductor (11) made of single crystal copper.

Images