Flame-retardant fireproof marine control cable

Abstract

The utility model provides a flame-retardant fireproof marine control cable. The flame-retardant fireproof marine control cable comprises a plurality of transmission fiber cores, a shielding support structure, an arc-shaped PVC flame-retardant strip and a protective layer. Firstly, the transmission fiber core ensures the flame-retardant and fire-resistant capabilities of the cable in a fire disaster, and provides a good electromagnetic shielding effect and corrosion resistance; and secondly, the arrangement of the shielding support structure can effectively provide the supporting and shielding effects of the cable. Through the arrangement of the arc-shaped PVC flame-retardant strips and the thin reinforcing steel wires, the flame-retardant performance of the cable is enhanced, the tensile strength of the cable is greatly improved through the thin reinforcing steel wires, and the mechanical stability of the cable in a complex marine environment is improved. The arrangement of the protective layer further enhances the weather resistance, water resistance, corrosion resistance, wear resistance and the like of the cable, thereby ensuring that the cable can stably operate for a long time in a complex marine environment. Therefore, the performance of the cable in multiple aspects of flame retardance, fire resistance, interference resistance, moisture resistance, corrosion resistance, wear resistance and the like is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a flame-retardant and fire-resistant shipboard control cable. Background Art

[0002] With the rapid development of science and technology, all walks of life are moving towards industrialization and electrification, which has also led to a substantial increase in the demand for cables. The role of cables in modern society is not only to transmit electricity, but also to transmit control signals, measurement signals and other non-electrical control signals, and are widely used in various electrical equipment and systems. However, the commonly used control cables currently have great deficiencies in flame retardancy, are easy to burn in a fire, and release a large amount of toxic and harmful gases when burning, which seriously threatens the safety of personnel's lives and may corrode surrounding equipment, causing significant economic losses.

[0003] In special environments such as ships and warships, the requirements for control cables are more stringent. Marine control cables not only need to have excellent transmission performance, but also must meet strict fire protection requirements. In the confined space of a ship, once a fire occurs, the control cable should have strong flame retardant and fire resistant properties, and be able to maintain the longest possible working time when burning to ensure that the crew can carry out effective emergency rescue. In addition, marine control cables must also have anti-interference, moisture resistance and corrosion resistance to meet the challenges of ships being in the marine environment for a long time. Traditional control cables are often difficult to meet the requirements in these aspects, so a flame retardant and fire resistant control cable that can perform well in the marine environment is needed to ensure the safe and stable operation of the ship system. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a flame retardant and fire resistant shipboard control cable, which solves the technical problems in the prior art that traditional control cables have insufficient flame retardant properties, are easy to burn and release toxic and harmful gases in fires, and lack anti-interference, moisture resistance and corrosion resistance.

[0005] A flame-retardant and fire-resistant shipboard control cable comprises a plurality of transmission fiber cores, a shielding support structure, an arc-shaped PVC flame-retardant strip and a protective layer: the transmission fiber core comprises a conductor and a flame-retardant inner layer, a metal protective shielding layer, an inner corrosion-resistant layer and a flame-retardant outer sheath arranged on the outside of the conductor; the shielding support structure comprises a central core body, a shielding connection rib and an annular shielding layer, the shielding connection rib is radially extended outwardly and arranged on the outside of the central core body, the annular shielding layer is connected and arranged on the other side of the shielding connection rib away from the central core body, the transmission fiber core is arranged between the shielding connection ribs, the arc-shaped PVC flame-retardant strips are evenly distributed on the outside of the annular shielding layer, and a thin reinforcing steel wire is arranged between the two arc-shaped PVC flame-retardant strips; the protective layer is arranged on the outside of the arc-shaped PVC flame-retardant strip, and comprises a waterproof layer, an outer corrosion-resistant layer, a fire-resistant layer, a heat-insulating layer, a flame-retardant layer and a wear-resistant outer sheath arranged in sequence from the inside to the outside.

[0006] Preferably, the central core, the shielding connecting ribs and the annular shielding layer are all made of semi-conductive polypropylene material.

[0007] Preferably, the diameter of the thin reinforcing steel wire is slightly smaller than the thickness of the arc-shaped PVC flame-retardant strip, and the gap between two adjacent arc-shaped PVC flame-retardant strips is slightly larger than the diameter of the thin reinforcing steel wire.

[0008] Preferably, an extrusion-resistant layer is provided between the outer corrosion-resistant layer and the fire-resistant layer.

[0009] Preferably, an aramid yarn filling layer is provided between the shielding support structure and the transmission fiber core.

[0010] Preferably, the wear-resistant outer sheath comprises a wear-resistant layer and convex strips arranged on the outer side of the wear-resistant layer.

[0011] Preferably, the number of the shielding connection ribs is three, and they are distributed at equal angles inside the annular shielding layer and the angle between each rib is 120 degrees.

[0012] Preferably, the arc-shaped PVC flame-retardant strip is bonded to the outside of the annular shielding layer.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model provides a flame-retardant and fire-resistant marine control cable, comprising a plurality of transmission fiber cores, a shielding support structure, an arc-shaped PVC flame-retardant strip and a protective layer. First, the transmission fiber core comprises a conductor, a flame-retardant inner layer, a metal protective shielding layer, an inner corrosion-resistant layer and a flame-retardant outer sheath, which ensures the flame-retardant and fire-resistant ability of the cable in a fire, and provides a good electromagnetic shielding effect and corrosion resistance, greatly reducing the impact of fire, external electromagnetic interference and marine environment on the cable, and improving the safety and reliability of the cable. Secondly, the setting of the shielding support structure can effectively provide support and shielding effects for the cable. The radial distribution of the shielding connecting ribs and the uniform connection design of the annular shielding layer enable the transmission fiber core to perform well in anti-interference, moisture resistance and anti-extrusion ability. The setting of the arc-shaped PVC flame-retardant strip and the thin reinforcing steel wire not only enhances the flame-retardant performance of the cable, but also greatly enhances the tensile strength of the cable and improves the mechanical stability of the cable in a complex marine environment. The setting of the protective layer further enhances the weather resistance, waterproofness, corrosion resistance and wear resistance of the cable, thereby ensuring that the cable can operate stably for a long time in a complex marine environment. Therefore, while meeting the high requirements of ships and vessels, the cable has significantly improved its flame retardancy, fire resistance, anti-interference, moisture resistance, corrosion resistance and wear resistance, effectively ensuring the safe and stable operation of ship systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of the cross-sectional structure of the flame-retardant and fire-resistant shipboard control cable.

[0016] in:

[0017] 10-transmission fiber core, 20-shielding support structure, 30-arc-shaped PVC flame retardant strip, 40-protective layer, 11-conductor, 12-flame retardant inner layer, 13-metal protective shielding layer, 14-inner corrosion-resistant layer, 15-flame retardant outer sheath; 21-center core, 22-shielding connecting ribs, 23-annular shielding layer, 24-thin reinforcing steel wire, 41-waterproof layer, 42-outer corrosion-resistant layer, 43-fire-resistant layer, 44-thermal insulation layer, 45-flame retardant layer, 46-wear-resistant outer sheath. DETAILED DESCRIPTION

[0018] The embodiments described below are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1The present embodiment provides a flame-retardant and fire-resistant shipboard control cable, comprising a plurality of transmission fiber cores 10, a shielding support structure 20, an arc-shaped PVC flame-retardant strip 30 and a protective layer 40: the transmission fiber core 10 comprises a conductor 11 and a flame-retardant inner layer 12, a metal protective shielding layer 13, an inner corrosion-resistant layer 14 and a flame-retardant outer sheath 15 arranged outside the conductor 11; the shielding support structure 20 comprises a central core 21, a shielding connecting rib 22 and an annular shielding layer 23, the shielding connecting rib 22 is radially extended outwardly and arranged outside the central core 21, The annular shielding layer 23 is connected and arranged on the other side of the shielding connecting rib 22 away from the central core 21, the transmission fiber core 10 is arranged between the shielding connecting ribs 22, the arc-shaped PVC flame-retardant strips 30 are evenly distributed on the outside of the annular shielding layer 23, and a thin reinforcing steel wire 24 is arranged between the two arc-shaped PVC flame-retardant strips 30; the protective layer 40 is arranged on the outside of the arc-shaped PVC flame-retardant strip 30, and includes a waterproof layer 41, an outer corrosion-resistant layer 42, a fire-resistant layer 43, a heat-insulating layer 44, a flame-retardant layer 45 and a wear-resistant outer sheath 46 arranged from the inside to the outside.

[0020] Preferably, the central core 21, the shielding connecting ribs 22 and the annular shielding layer 23 are all made of semi-conductive polypropylene material. The electromagnetic shielding capability of the entire cable is significantly enhanced, so that the internal signal of the cable is protected from external electromagnetic interference, ensuring the stability and reliability of the system operation. Secondly, the semi-conductive polypropylene material has excellent tensile strength, bending fatigue resistance and impact resistance, so that the cable can maintain the integrity and stability of the structure when it is subjected to various mechanical stresses generated during the movement of the ship, and effectively avoid cable damage or performance degradation caused by external forces.

[0021] Preferably, the diameter of the thin reinforcing steel wire 24 is slightly smaller than the thickness of the arc-shaped PVC flame-retardant strip 30, and the gap between two adjacent arc-shaped PVC flame-retardant strips 30 is slightly larger than the diameter of the thin reinforcing steel wire 24. This allows the thin reinforcing steel wire 24 to be tightly and orderly embedded in the gap between the flame-retardant strips, thereby keeping the internal structure of the cable compact and effectively improving the overall strength and stability of the cable. At the same time, the tensile strength of the cable is significantly enhanced. Through appropriate gap design, the steel wire has a certain amount of expansion and contraction space when subjected to tension, avoiding the risk of breakage. In addition, the flame retardant performance of the cable is further improved. The flame retardant strip fully covers and effectively acts on the surface of the annular shielding layer 23, and cooperates with the thin reinforcing steel wire 24 to form a solid flame-retardant and tensile protective layer.

[0022] Preferably, an extrusion-resistant layer is provided between the outer corrosion-resistant layer 42 and the fire-resistant layer 43, which not only enhances the overall anti-extrusion capability of the cable, effectively resists damage that may be caused by external mechanical pressure, but also further improves the structural stability of the cable. At the same time, as a buffer layer between the outer corrosion-resistant layer 42 and the fire-resistant layer 43, it can also reduce the thermal stress of the fire-resistant layer 43 in a high temperature environment to a certain extent, and protect the internal structure from thermal damage.

[0023] Preferably, an aramid yarn filling layer is provided between the shielding support structure 20 and the transmission fiber core 10. The aramid yarn filling layer provides additional support for the interior of the cable with its excellent physical properties, such as high strength and high modulus. It helps to maintain the stability of the cable structure and reduce cable deformation caused by external factors (such as bending, stretching, etc.). When the cable structure is stable, the shielding support structure 20 can also play a better role and reduce shielding holes that may be caused by structural changes.

[0024] Preferably, the wear-resistant outer sheath 46 comprises a wear-resistant layer and convex strips arranged outside the wear-resistant layer, which effectively improves the wear resistance of the cable and the anti-slip performance of the cable.

[0025] Preferably, the number of the shielding connecting ribs 22 is three in total, and they are evenly distributed inside the annular shielding layer 23, and the angle between each is 120 degrees. The even distribution of the three connecting ribs effectively improves the overall structural strength of the annular shielding layer 23, enabling it to better resist external electromagnetic interference and mechanical stress, and protect the safety and stability of the internal transmission signal. Secondly, the design of equal-angle distribution ensures that each connecting rib can play the greatest role in the annular shielding layer 23, reducing the shielding loopholes or performance degradation that may be caused by uneven distribution.

[0026] Preferably, the arc-shaped PVC flame-retardant strip 30 is bonded to the outside of the annular shielding layer 23. By bonding the arc-shaped PVC flame-retardant strip 30 to the outside of the annular shielding layer 23, a solid fire barrier is formed, thereby improving the overall safety of the cable. Secondly, the arc-shaped design enables the flame-retardant strip to fit the contour of the cable closely, reducing heat transfer and flame penetration that may be caused by gaps or voids, and enhancing the flame-retardant effect of the cable.

[0027] The utility model provides a flame retardant and fire resistant marine control cable, comprising a plurality of transmission fiber cores 10, a shielding support structure 20, an arc-shaped PVC flame retardant strip 30 and a protective layer 40. First, the transmission fiber core 10 includes a conductor 11, a flame retardant inner layer 12, a metal protective shielding layer 13, an inner corrosion resistant layer 14 and a flame retardant outer sheath 15, which ensures the flame retardant and fire resistant ability of the cable in a fire, and provides a good electromagnetic shielding effect and corrosion resistance, greatly reducing the impact of fire, external electromagnetic interference and marine environment on the cable, and improving the safety and reliability of the cable. Secondly, the setting of the shielding support structure 20 can effectively provide support and shielding effects for the cable. The radial distribution of the shielding connection ribs 22 and the uniform connection design of the annular shielding layer 23 make the transmission fiber core 10 perform well in anti-interference, moisture resistance and extrusion resistance. The setting of the arc-shaped PVC flame retardant strip 30 and the thin reinforcing steel wire 24 not only enhances the flame retardant performance of the cable, but also greatly enhances the tensile strength of the cable and improves the mechanical stability of the cable in a complex marine environment. The provision of the protective layer 40 further enhances the weather resistance, waterproofness, corrosion resistance and abrasion resistance of the cable, thereby ensuring that the cable can operate stably and for a long time in a complex marine environment. Therefore, while meeting the high requirements of ships and vessels, the cable significantly improves the performance of flame retardancy, fire resistance, anti-interference, moisture resistance, corrosion resistance and abrasion resistance, and effectively ensures the safe and stable operation of the ship system.

[0028] The above disclosures are only several preferred embodiments of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A flame retardant and fire resistant shipboard control cable, characterized in that: It includes multiple transmission fiber cores, shielding support structure, curved PVC flame retardant strips and protective layer: The transmission fiber core comprises a conductor and a flame retardant inner layer, a metal protective shielding layer, an inner corrosion resistant layer and a flame retardant outer sheath arranged outside the conductor; The shielding support structure comprises a central core, a shielding connection rib and an annular shielding layer, wherein the shielding connection rib is radially extended outwardly and arranged outside the central core, the annular shielding layer is connected and arranged on the other side of the shielding connection rib away from the central core, the transmission fiber core is arranged between the shielding connection ribs, the arc-shaped PVC flame-retardant strips are evenly arranged outside the annular shielding layer, and a thin reinforcing steel wire is arranged between the two arc-shaped PVC flame-retardant strips; The protective layer is arranged on the outside of the arc-shaped PVC flame-retardant strip, and comprises a waterproof layer, an outer corrosion-resistant layer, a fire-resistant layer, a heat-insulating layer, a flame-retardant layer and a wear-resistant outer sheath which are arranged in sequence from the inside to the outside.

2. The flame retardant and fire resistant shipboard control cable according to claim 1, characterized in that: The central core, the shielding connecting ribs and the annular shielding layer are all made of semi-conductive polypropylene material.

3. The flame retardant and fire resistant shipboard control cable according to claim 1, characterized in that: The diameter of the thin reinforcing steel wire is slightly smaller than the thickness of the arc-shaped PVC flame-retardant strip, and the gap between two adjacent arc-shaped PVC flame-retardant strips is slightly larger than the diameter of the thin reinforcing steel wire.

4. The flame retardant and fire resistant shipboard control cable according to claim 1, characterized in that: An extrusion-resistant layer is provided between the outer corrosion-resistant layer and the fire-resistant layer.

5. The flame retardant and fire resistant shipboard control cable according to claim 1, characterized in that: An aramid yarn filling layer is arranged between the shielding support structure and the transmission fiber core.

6. The flame retardant and fire resistant shipboard control cable according to claim 1, characterized in that: The wear-resistant outer sheath comprises a wear-resistant layer and convex strips arranged on the outer side of the wear-resistant layer.

7. The flame retardant and fire resistant shipboard control cable according to claim 1, characterized in that: There are three shielding connection ribs in total, which are distributed at equal angles inside the annular shielding layer and the angle between each rib is 120 degrees.

8. The flame retardant and fire resistant shipboard control cable according to claim 1, characterized in that: The arc-shaped PVC flame-retardant strip is bonded and arranged on the outer side of the annular shielding layer.

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