Low-smoke halogen-free silicone rubber insulation fireproof cable

Abstract

The utility model relates to the technical field of cables, and discloses a low-smoke halogen-free silicone rubber insulating fireproof cable, which comprises a plurality of copper conductors, ceramic silicone rubber insulating layers are arranged on the outer sides of the plurality of copper conductors, and glass fiber braid layers are arranged on the outer walls of the ceramic silicone rubber insulating layers. A metal foil damp-proof layer is arranged on the outer wall of the glass fiber braid layer, a mica tape wrapping layer is arranged on the outer wall of the metal foil damp-proof layer, a heat insulation buffer layer is arranged on the outer wall of the mica tape wrapping layer, a tinned copper wire shielding layer is arranged on the outer wall of the heat insulation buffer layer, and a carbon nanotube heat dissipation layer is arranged on the outer wall of the tinned copper wire shielding layer. According to the utility model, the ceramic silicone rubber insulating layer and the mica tape wrapping layer are utilized to resist fire, the low-smoke halogen-free characteristic is utilized to reduce harm, the metal foil is moistureproof, the heat insulation buffer layer is utilized to guarantee safety, stability and safety in fire disasters are improved, personnel evacuation and rescue are facilitated, the cable is suitable for places with high fireproof requirements, and power transmission and personnel safety are powerfully guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field especially relates to a low smoke halogen -free silicone rubber insulation fire -retardant cable. BACKGROUND

[0002] Fire -retardant cable is the cable that possesses fire -resisting performance, through special material and structure, can maintain power transmission and prevent flame spread in the fire. The reason of using low smoke halogen -free silicone rubber insulation fire -retardant cable is numerous, on the fire safety, its low smoke characteristic can reduce smoke to hinder personnel evacuation, halogen -free performance avoids releasing toxic gas, guarantees personnel life safety and reduces environmental pollution, and excellent fire -resisting performance, can ensure the power supply of fire -fighting equipment in the fire;In electrical performance, has good insulation performance, prevents current leakage, strong aging resistance, prolongs the service life, reduces the maintenance cost;On the installation and use flexibility, good flexibility, facilitate in complex environment laying, also can adapt to a variety of temperature and humidity conditions, stable work.

[0003] Traditional cable can release a large amount of toxic smoke and harmful gas when fire occurs, and is easy to burn and spread, which seriously threatens the safety of personnel life and property, and the existing such cable still has some deficiencies in structural design, for example, the comprehensive improvement of high temperature resistance, tensile resistance and insulation performance still needs to be improved, therefore, a low smoke halogen -free silicone rubber insulation fire -retardant cable is proposed to solve the above problems. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides a kind of low smoke halogen -free silicone rubber insulation fire -retardant cable, to improve the problems of cable in prior art in structure lack of high temperature resistance, tensile resistance and insulation performance.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of low smoke halogen -free silicone rubber insulation fire -retardant cable, including multiple copper conductors, ceramicized silicone rubber insulation layer is arranged at the outer side of multiple copper conductors, glass fiber braiding layer is arranged at the outer wall of ceramicized silicone rubber insulation layer, metal foil moisture-proof layer is arranged at the outer wall of glass fiber braiding layer, mica tape wrapping layer is arranged at the outer wall of metal foil moisture-proof layer, heat insulation buffer layer is arranged at the outer wall of mica tape wrapping layer, tinned copper wire shielding layer is arranged at the outer wall of heat insulation buffer layer, nano carbon tube heat dissipation layer is arranged at the outer wall of tinned copper wire shielding layer, halogen -free flame -retardant filling layer is arranged at the outer wall of nano carbon tube heat dissipation layer, aramid fiber reinforcing layer is arranged at the outer wall of halogen -free flame -retardant filling layer, elastic rubber buffer layer is arranged at the outer wall of aramid fiber reinforcing layer, low smoke halogen -free polyolefin sheath layer is arranged at the outer wall of elastic rubber buffer layer.

[0006] Further, the ceramicized silicone rubber insulation layer tightly wraps the copper conductor to form a hard ceramic shell to insulate the flame at high temperature.

[0007] Further, the glass fiber braided layer is wound outside the ceramicized silicone rubber insulation layer, for enhancing the tensile resistance of the cable, and playing a heat insulation role.

[0008] Further, the metal foil moisture-proof layer is laid outside the glass fiber braided layer, for preventing the internal components of the cable from being affected by moisture.

[0009] Further, the mica tape wrapping layer covers the metal foil moisture-proof layer, for providing an additional fireproof barrier for the internal structure of the cable.

[0010] Further, the heat insulation buffer layer is located between the mica tape wrapping layer and the tinned copper wire shielding layer, and the heat insulation buffer layer is composed of a new type of nano heat insulation material and elastic rubber, and the nano heat insulation material can efficiently insulate heat and block the conduction of heat to the inside of the cable.

[0011] Further, the aramid fiber reinforcing layer is wrapped outside the halogen-free flame-retardant filling layer, and the aramid fiber reinforcing layer is used for improving the tensile resistance of the cable.

[0012] Further, the elastic rubber buffer layer is arranged outside the aramid fiber reinforcing layer, and the elastic rubber buffer layer is used for buffering the impact force from the outside on the cable.

[0013] The utility model has the following beneficial effects:

[0014] 1、 in the utility model, the ceramic shell is formed under high temperature by the ceramicized silicone rubber insulation layer to insulate flame, the mica tape wrapping layer provides an additional fireproof barrier, effectively prevents the spread of fire, and guarantees the safety of power transmission, at the same time, the low-smoke halogen-free characteristics reduce the generation of smoke and toxic gas, the metal foil moisture-proof layer prevents the inside from being damp, the heat insulation buffer layer blocks the conduction of heat, greatly improves the stability and safety of the cable under dangerous conditions such as fire, creates favorable conditions for personnel evacuation and fire rescue, and is suitable for various places with strict fire safety requirements.

[0015] 2、 in the utility model, the tensile resistance of the cable is greatly enhanced by the glass fiber braided layer and the aramid fiber reinforcing layer, so that it can withstand greater tension and is not easy to be damaged, can adapt to complex installation and use environment, such as frequent pulling in building construction, long-term stress in overhead laying and the like, can maintain structural integrity, the elastic rubber buffer layer effectively buffers the impact force from the outside, reduces the damage of the internal structure, in addition, the nano carbon tube heat dissipation layer improves the heat dissipation efficiency, prevents material aging caused by overheating, prolongs the service life of the cable, reduces the maintenance cost, and guarantees long-term stable operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1The utility model provides a kind of low smoke halogen-free silicon rubber insulation fireproof cable's three-dimensional structure schematic diagram;

[0017] Figure 2 The utility model provides a kind of low smoke halogen-free silicon rubber insulation fireproof cable's tinned copper wire shielding layer partial structure schematic diagram;

[0018] Figure 3 The utility model provides a kind of low smoke halogen-free silicon rubber insulation fireproof cable's copper conductor partial structure schematic diagram.

[0019] Legend:

[0020] 1, copper conductor;2, ceramicized silicon rubber insulation layer;3, glass fiber braided layer;4, metal foil moisture-proof layer;5, mica tape wrapping layer;6, heat insulation buffer layer;7, tinned copper wire shielding layer;8, nanometer carbon tube heat dissipation layer;9, halogen-free flame-retardant filling layer;10, aramid fiber reinforcing layer;11, elastic rubber buffer layer;12, low smoke halogen-free polyolefin sheath layer. Specific implementation

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0022] Reference Figure 1 , Figure 2 and Figure 3 An embodiment provided by the utility model: a kind of low smoke halogen-free silicon rubber insulation fireproof cable, including multiple copper conductors 1, multiple copper conductors 1 outside are all provided with ceramicized silicon rubber insulation layer 2, ceramicized silicon rubber insulation layer 2 outer wall is provided with glass fiber braided layer 3, glass fiber braided layer 3 outer wall is provided with metal foil moisture-proof layer 4, metal foil moisture-proof layer 4 outer wall is provided with mica tape wrapping layer 5, mica tape wrapping layer 5 outer wall is provided with heat insulation buffer layer 6, heat insulation buffer layer 6 outer wall is provided with tinned copper wire shielding layer 7, tinned copper wire shielding layer 7 outer wall is provided with nanometer carbon tube heat dissipation layer 8, nanometer carbon tube heat dissipation layer 8 outer wall is provided with halogen-free flame-retardant filling layer 9, halogen-free flame-retardant filling layer 9 outer wall is provided with aramid fiber reinforcing layer 10, aramid fiber reinforcing layer 10 outer wall is provided with elastic rubber buffer layer 11, elastic rubber buffer layer 11 outer wall is provided with low smoke halogen-free polyolefin sheath layer 12;

[0023] Specifically, the copper conductor 1 is responsible for conducting electricity, the ceramicized silicone rubber insulation layer 2 is insulated at room temperature and high temperature, the glass fiber woven layer 3 enhances mechanical strength and thermal insulation, the metal foil moisture-proof layer 4 prevents water and moisture, preserves the performance of internal components, the mica tape wrapping layer 5 is fire-resistant and blocks the spread of fire, the nanometer thermal insulation material in the thermal insulation buffer layer 6 provides thermal insulation and elastic rubber cushioning against external forces, the tinned copper wire shielding layer 7 shields electromagnetic interference and enhances mechanical strength, the nanometer carbon tube heat dissipation layer 8 quickly dissipates heat and improves current-carrying capacity, the halogen-free flame-retardant filling layer 9 is halogen-free, fireproof and pollution-free, the aramid fiber reinforcing layer 10 enhances tensile resistance and ensures structural stability, the elastic rubber cushioning layer 11 cushions impact and protects internal components, and the low-smoke halogen-free polyolefin sheath layer 12 is mechanically protective and low-smoke halogen-free, safe and environmentally friendly, ensuring stable operation of the cable in complex environments, meeting the needs of various places, and improving fireproof, electrical and safety performance.

[0024] With reference to Figure 1 , Figure 2 and Figure 3 , the ceramicized silicone rubber insulation layer 2 tightly wraps the copper conductor 1, which forms a hard ceramic shell to insulate the flame at high temperatures; the glass fiber woven layer 3 is wrapped outside the ceramicized silicone rubber insulation layer 2, which enhances the cable's tensile resistance and acts as a thermal insulator; the metal foil moisture-proof layer 4 is laid outside the glass fiber woven layer 3 to prevent the internal components of the cable from being affected by moisture; the mica tape wrapping layer 5 covers the metal foil moisture-proof layer 4 to provide an additional fireproof barrier for the internal structure of the cable; the thermal insulation buffer layer 6 is located between the mica tape wrapping layer 5 and the tinned copper wire shielding layer 7, and the thermal insulation buffer layer 6 is composed of a new type of nanometer thermal insulation material and elastic rubber. The nanometer thermal insulation material efficiently insulates heat and blocks its conduction to the inside of the cable; the aramid fiber reinforcing layer 10 is wrapped outside the halogen-free flame-retardant filling layer 9, which is used to improve the cable's tensile resistance; the elastic rubber cushioning layer 11 is placed outside the aramid fiber reinforcing layer 10, which is used to cushion the impact of external forces on the cable;

[0025] Specifically, the ceramicized silicone rubber insulation layer 2 tightly wraps the copper conductor 1, forming a hard ceramic shell at high temperatures to isolate the flame and ensure the integrity of the cable core, effectively improving the fire resistance of the cable; the glass fiber woven layer 3 is wrapped outside the ceramicized silicone rubber insulation layer 2, which enhances the tensile strength of the cable and has good heat insulation effect, preventing external high temperature from causing thermal damage to the internal structure of the cable; the metal foil moisture-proof layer 4 is laid outside the glass fiber woven layer 3, which prevents the internal components of the cable from being affected by moisture, effectively blocks the penetration of external moisture, and ensures the stability of the electrical performance of the cable; the mica tape wrapping layer 5 covers the outside of the metal foil moisture-proof layer 4, which provides an additional fire barrier for the internal structure of the cable, and the mica material has excellent high-temperature resistance, which can delay the thermal decomposition of the cable under fire conditions, enhancing the safety of the cable; the heat insulation buffer layer 6 is located between the mica tape wrapping layer 5 and the tinned copper wire shielding layer 7, and the heat insulation buffer layer 6 is composed of a new type of nano heat insulation material and elastic rubber. The nano heat insulation material has high-efficiency heat insulation characteristics, which can block the conduction of heat to the inside of the cable, and the elastic rubber component provides a certain flexibility to protect the stability of the cable during installation and use; the aramid fiber reinforcing layer 10 is wrapped outside the halogen-free flame-retardant filling layer 9, which is used to improve the tensile properties of the cable, and its high-strength material characteristics can keep the structure of the cable stable under mechanical load; the elastic rubber buffer layer 11 is placed outside the aramid fiber reinforcing layer 10, which is used to buffer the impact of external impact force on the cable, effectively reducing the damage caused by external force to the cable, and prolonging the service life of the cable.

[0026] Working principle: When the cable needs to be used, the working principle of the low-smoke halogen-free silicone rubber insulation fireproof cable is to provide excellent fireproof, insulating, tensile and impact resistance through the synergistic effect of the multi-layer structure. The copper conductor 1 is tightly wrapped by the ceramicized silicone rubber insulation layer 2, forming a hard ceramic shell at high temperatures to isolate the flame. The glass fiber woven layer 3 enhances the tensile properties of the cable and provides heat insulation function. The metal foil moisture-proof layer 4 prevents moisture from entering, ensuring the stability of the internal components. The mica tape wrapping layer 5 further enhances the fireproof ability, and the heat insulation buffer layer 6 effectively blocks the conduction of heat to the inside through the combination of nano heat insulation material and elastic rubber. The tinned copper wire shielding layer 7 and the nano carbon tube heat dissipation layer 8 jointly improve the shielding and heat dissipation capacity. The external aramid fiber reinforcing layer 10 and the elastic rubber buffer layer 11 respectively improve the tensile strength and buffer external impact force, and finally the low-smoke halogen-free polyolefin sheath layer 12 protects the entire structure, making the cable suitable for complex and high-risk use environments.

[0027] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A low smoke zero halogen silicone rubber insulated fire resistant cable comprising a plurality of copper conductors (1) characterised in that: A plurality of copper conductors (1) are provided with a ceramicized silicone rubber insulation layer (2) on the outside, a glass fiber woven layer (3) is provided on the outer wall of the ceramicized silicone rubber insulation layer (2), a metal foil moisture-proof layer (4) is provided on the outer wall of the glass fiber woven layer (3), a mica tape wrapping layer (5) is provided on the outer wall of the metal foil moisture-proof layer (4), a heat insulation buffer layer (6) is provided on the outer wall of the mica tape wrapping layer (5), a tinned copper wire shielding layer (7) is provided on the outer wall of the heat insulation buffer layer (6), a nano carbon tube heat dissipation layer (8) is provided on the outer wall of the tinned copper wire shielding layer (7), a halogen-free flame-retardant filling layer (9) is provided on the outer wall of the nano carbon tube heat dissipation layer (8), an aramid fiber reinforcing layer (10) is provided on the outer wall of the halogen-free flame-retardant filling layer (9), an elastic rubber buffer layer (11) is provided on the outer wall of the aramid fiber reinforcing layer (10), and a low-smoke halogen-free polyolefin sheath layer (12) is provided on the outer wall of the elastic rubber buffer layer (11).

2. A low smoke zero halogen silicone rubber insulated fire resistant cable according to claim 1 characterised in that: The ceramicized silicone rubber insulation layer (2) tightly wraps the copper conductor (1) to form a hard ceramic shell to insulate the flame at high temperature.

3. A low smoke zero halogen silicone rubber insulated fire resistant cable according to claim 1, characterised in that: The glass fiber woven layer (3) is wound on the outside of the ceramicized silicone rubber insulation layer (2) to enhance the tensile resistance of the cable and provide thermal insulation.

4. A low smoke zero halogen silicone rubber insulated fire resistant cable according to claim 1, characterised in that: The metal foil moisture-proof layer (4) is laid on the outside of the glass fiber woven layer (3) to prevent the internal components of the cable from being affected by moisture.

5. A low smoke zero halogen silicone rubber insulated fire resistant cable according to claim 1, characterised in that: The mica tape wrapping layer (5) covers the outside of the metal foil moisture-proof layer (4) to provide an additional fireproof barrier for the internal structure of the cable.

6. A low smoke zero halogen, silicone rubber insulated fire resistant cable according to claim 1, characterised in that: The heat insulation buffer layer (6) is located between the mica tape wrapping layer (5) and the tinned copper wire shielding layer (7), and is composed of a new type of nano heat insulation material and elastic rubber. The nano heat insulation material efficiently insulates heat and blocks the conduction of heat to the inside of the cable.

7. A low smoke zero halogen, silicone rubber insulated fire resistant cable according to claim 1, characterised in that: The aramid fiber reinforcing layer (10) surrounds the outside of the halogen-free flame-retardant filling layer (9), and the aramid fiber reinforcing layer (10) is used to improve the tensile resistance of the cable.

8. A low smoke zero halogen, silicone rubber insulated fire resistant cable according to claim 1, characterised in that: The elastic rubber buffer layer (11) is placed on the outside of the aramid fiber reinforcing layer (10), and the elastic rubber buffer layer (11) is used to buffer the impact of external impact force on the cable.

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