CN115458214A - Fireproof cable with copper conductor mineral insulation aluminum metal sheath - Google Patents

Abstract

The invention discloses a fireproof cable with a copper conductor mineral insulation aluminum metal sheath, which comprises a sheath, wherein a heat insulation layer is arranged on the inner surface of the sheath, a flame retardant layer is arranged on the inner surface of the heat insulation layer, a fireproof layer is arranged on the inner surface of the flame retardant layer, a partition plate is arranged inside the fireproof layer, a heat insulation ring is arranged at one end of the partition plate, a reinforcing core is arranged inside the heat insulation ring, an insulation layer is arranged inside the fireproof layer, a conductor is arranged on the inner surface of the insulation layer, and a cavity is arranged inside the fireproof layer.

Description

A fireproof cable with copper conductor mineral insulated aluminum metal sheath

technical field

The invention relates to the field of cables, in particular to a fireproof cable with a copper conductor mineral insulated aluminum metal sheath.

Background technique

At present, with the development of science and technology, industry and other fields are also making rapid progress, which brings about an increase in the amount of cables. Cables are usually ropes twisted by several wires or groups of wires. Between each group of wires They are insulated from each other and often twisted around a center. The entire outer surface is covered with a highly insulating coating. The wires are usually made of copper and aluminum. There are many types of cables that can be used in many fields and different fields. The use environment is different, so there are different requirements for cables. The application places of cables are relatively complicated. These complex places pose challenges to the safe operation of cables. Fire is one of the most important factors affecting the safe operation of cables. , How to ensure the normal operation of cables under high temperature conditions is a technical problem that cable manufacturers need to solve.

Existing fireproof cables have a simple structure and poor fireproof performance. After a fire breaks out, the temperature is too high, and the cable itself will still burn and cause power outages, which cannot guarantee normal power transmission. Pollution of the environment can also cause physical harm to personnel, and the connection and disassembly of the joints is not convenient enough.

Contents of the invention

The purpose of the present invention is to provide a fireproof cable with a copper conductor mineral insulated aluminum metal sheath to solve the problem that the fireproof performance of the existing fireproof cables proposed in the background technology is not good enough.

In order to achieve the above object, the present invention provides the following technical solutions: a fireproof cable with a copper conductor mineral insulated aluminum metal sheath, including a sheath, the inner surface of the sheath is provided with a heat insulation layer, and the heat insulation layer The inner surface is provided with a flame retardant layer, the inner surface of the flame retardant layer is provided with a fireproof layer, the inside of the fireproof layer is provided with a partition, one end of the partition is provided with a heat insulation ring, and the heat insulation ring A reinforcing core is arranged inside, an insulating layer is arranged inside the fireproof layer, a conductor is arranged on the inner surface of the insulating layer, a cavity is arranged inside the fireproof layer, and a buffer chamber is arranged inside the sheath , elastic blocks are symmetrically arranged at the top and bottom ends of the buffer chamber, and springs are arranged between the elastic blocks.

Preferably, a magnetic ring is provided on the surface of the end of the sheath, an upper concave block is provided on one side of the magnetic ring, and a lower convex block is provided on one side of the magnetic ring.

Preferably, a ferrule is provided on the outside of the magnetic ring, and a magnetic block is provided on the surface of one end of the reinforcing core.

Preferably, the sheath is made of aluminum metal, and the heat insulation layer is made of glass fiber.

Preferably, the insulating layer is made of magnesium oxide, and the conductor is made of metallic copper.

Preferably, the flame-retardant layer uses inorganic nano-ceramic beads, and the fire-resistant layer uses epoxy resin organic fibers.

Compared with prior art, the beneficial effect of the present invention is:

The outer layer of the fireproof cable is made of aluminum metal sheath, which is light in weight, low in cost, reasonable in internal structure, including heat insulation layer, flame retardant layer, fireproof layer and insulation layer, wrapped layer by layer, with superior fireproof performance, mineral insulation, and operation It has the advantages of high temperature, long life, small outer diameter, waterproof, high mechanical strength, large carrying capacity, and high corrosion resistance. It contains a strengthening core to strengthen the overall strength and toughness of the cable. The overall fire performance of the cable is superior and will not generate a large amount of Thick smoke and toxic gas, safer and more environmentally friendly, can be widely used in various places.

The fireproof cable connector adopts magnetic suction connection, the cable connector is provided with a magnetic ring and a magnetic block, and the cable connectors are connected to each other. When connecting, the upper concave block and the lower convex block on both sides are coupled with each other, and a ferrule is arranged outside the connector connection. , the joints are further reinforced, the joints are magnetically adsorbed, there is no gap in the connection, the stability and safety are high, and the cooperation of the spring and the elastic block acts as a buffer. When impacted, the friction type can effectively reduce the damage caused by friction and impact.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the joint of the present invention;

Fig. 3 is the schematic diagram of the external structure of the joint of the present invention

Fig. 4 is a sectional view of the inner structure of the sheath of the present invention.

In the figure: 1. Sheath; 2. Heat insulation layer; 3. Heat insulation ring; 4. Flame retardant layer; 5. Fireproof layer; 6. Partition plate; 7. Insulation layer; 8. Conductor; 10. Cavity; 11. Magnetic ring; 12. Ferrule; 13. Lower bump; 14. Upper concave block; 15. Magnetic block; 16. Spring; 17. Buffer chamber; 18. Elastic block.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1-4, the present invention provides a kind of technical scheme: a kind of fireproof cable with copper conductor mineral insulated aluminum metal sheath, comprises sheath 1, light in weight, mechanical strength is big, manufacturing cost is low, sheath 1 The inner surface is provided with a heat insulation layer 2, which is made of glass fiber and has good heat resistance. The inner surface of the heat insulation layer 2 is provided with a flame retardant layer 4, and the flame retardant layer 4 is made of inorganic nano-ceramic beads. It is non-toxic and odorless at normal temperature, and has good flexibility and elasticity. After the cable catches fire, it becomes a hard ceramic shell to protect the internal structure. The inner surface of the flame-retardant layer 4 is provided with a fire-proof layer 5, which is made of epoxy Resin organic fiber, itself will not burn, and prevent the interior from being damaged when a fire occurs. The interior of the fireproof layer 5 is provided with a partition 6, and one end of the partition 6 is provided with a heat insulation ring 3. The heat insulation ring 3 and the partition 6 cooperate to connect the conductor 8 are separated in different spaces to prevent the spread of flames and improve fire performance. A reinforcing core 9 is provided inside the heat insulation ring 3, which strengthens the overall strength and toughness of the cable. An insulating layer 7 is provided inside the fireproof layer 5 to insulate Layer 7 is made of magnesium oxide insulating material with a high melting point. In an emergency, the cable can continue to operate for a short time. The inside of the sheath 1 is provided with a buffer chamber 17. The top and bottom ends of the buffer chamber 17 are symmetrically arranged with elastic A spring 16 is arranged between the block 18 and the elastic block 18, which can play a buffering role in daily use, and can effectively reduce the damage caused by friction and impact when subjected to impact friction.

The inner surface of the insulating layer 7 is provided with a conductor 8, the conductor 8 is metal copper, the interior of the fireproof layer 5 is provided with a cavity 10, the cable joint adopts a magnetic suction design, and the end surface of the sheath 1 is provided with a magnetic ring 11, One side of the magnetic ring 11 is provided with an upper concave block 14, one side of the magnetic ring 11 is provided with a lower convex block 13, and one end surface of the reinforcing core 9 is provided with a magnetic block 15, and the cable joints are connected to each other. The concave block 14 and the lower convex block 13 are coupled with each other, and the outer part of the magnetic ring 11 is provided with a ferrule 12, which is further reinforced at the joint, magnetically adsorbed at the joint, and there is no gap in the connection, with high stability and safety.

Working principle: When in use, the outermost layer of the fireproof cable is a sheath 1 made of aluminum metal, which is light in weight, high in mechanical strength, and low in production cost. The heat insulation layer 2 is made of glass fiber, which has good heat resistance, and the flame retardant layer 4. Ceramic silicon rubber is used. Ceramic silicon rubber is non-toxic and odorless at room temperature, and has good softness and elasticity. After the cable catches fire, it becomes a hard ceramic shell to protect the internal structure. Fireproof layer 5 uses mineral fireproof Mud, it will not burn by itself, so as to prevent damage to the inside when a fire occurs, the insulating layer 7 is made of magnesium oxide insulating material, which has a high melting point. In an emergency, the cable can continue to operate for a short time. Separated in different spaces to prevent the spread of flames and improve fire performance, the reinforcing core 9 strengthens the overall strength and toughness of the cable, the cable joint adopts a magnetic suction design, and is equipped with a magnetic ring 11 and a magnetic block 15, and the cable joints are connected to each other by suction , when connecting, the upper concave block 14 and the lower convex block 13 on both sides are coupled with each other, and a ferrule 12 is arranged outside the joint connection, and the joint is further reinforced, and the joint is magnetically adsorbed. There is no gap in the connection, and the stability and safety are high.

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

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. A fireproof cable with a copper conductor mineral insulated aluminum metal sheath, comprising a sheath (1), is characterized in that: the inner surface of the sheath (1) is provided with a heat insulating layer (2), and the insulator The inner surface of the thermal layer (2) is provided with a flame-retardant layer (4), the inner surface of the flame-resistant layer (4) is provided with a fireproof layer (5), and the inside of the fireproof layer (5) is provided with a partition ( 6), one end of the partition (6) is provided with a heat insulation ring (3), the interior of the heat insulation ring (3) is provided with a reinforcing core (9), and the interior of the fireproof layer (5) is provided with An insulating layer (7), the inner surface of the insulating layer (7) is provided with a conductor (8), the interior of the fireproof layer (5) is provided with a cavity (10), and the interior of the sheath (1) is provided with There is a buffer chamber (17), and elastic blocks (18) are arranged symmetrically at the top and bottom ends inside the buffer chamber (17), and springs (16) are arranged between the elastic blocks (18). 2. A fireproof cable with a copper conductor mineral insulated aluminum metal sheath according to claim 1, characterized in that: the surface of the end of the sheath (1) is provided with a magnetic ring (11), and the magnetic ring One side of (11) is provided with an upper concave block (14), and one side of the magnetic ring (11) is provided with a lower convex block (13). 3. A fireproof cable with a copper conductor mineral insulated aluminum metal sheath according to claim 1, characterized in that: a ferrule (12) is arranged outside the magnetic ring (11), and the reinforcing core (9 ) is provided with a magnetic block (15) on one end surface. 4. A fireproof cable with a copper conductor mineral insulated aluminum metal sheath according to claim 1, characterized in that: the sheath (1) is made of aluminum metal, and the heat insulation layer (2) is made of glass fiber production. 5. A fireproof cable with copper conductor mineral insulated aluminum metal sheath according to claim 1, characterized in that: the insulating layer (7) is made of magnesium oxide, and the conductor (8) is made of metallic copper . 6. A fireproof cable with a copper conductor mineral insulated aluminum metal sheath according to claim 1, characterized in that: the fireproof layer (4) adopts inorganic nano-ceramic beads, and the fireproof layer (5) adopts Epoxy organic fibers.

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