Irradiation low-smoke halogen-free flame-retardant pressure-resistant cable

Abstract

The utility model discloses an irradiation low-smoke halogen-free flame-retardant pressure-resistant cable, and the cable comprises a communication optical fiber which is transmitted in a protection tube; the first protective layer is arranged outside the protective pipe; the insulating layer is arranged outside the first protective layer; the second protective layer is arranged outside the first protective layer; the anti-corrosion layer is arranged outside the second protective layer; the anti-pressure buffer layer comprises a plurality of outer buffer sleeves which are spirally twisted outside the anti-corrosion layer, inner buffer sleeves are coaxially arranged in the outer buffer sleeves, and a plurality of supporting plates are detachably connected between the inner buffer sleeves and the outer buffer sleeves at equal intervals in the circumferential direction; and the waterproof layer is coated outside the outer buffer sleeve. According to the utility model, the external force bearing capability of the cable is improved through the first protection layer and the second protection layer, and the impact force generated when the cable bears the impact in the vertical direction can be reduced through the arrangement of the inner buffer sleeve and the outer buffer sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to an irradiated low-smoke halogen-free flame-retardant and pressure-resistant cable. Background Art

[0002] Cables include power cables, compression cables, compensating cables, shielded cables, high temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, etc. They are all composed of single or multiple strands of wire and an insulating layer, used to connect circuits, electrical appliances, etc.

[0003] In some environments where no cables are installed, such as construction sites, cables are easily cut by passing vehicles. Analysis of the cutting mechanism shows that the cable core sheath is pressed on the cable core under high pressure, causing greater friction between the sheath and the cable core. Then the sheath deforms axially under pressure, generating axial pulling force on the cable core, causing the cable core to be broken. At the same time, some cables are cut because there are sharp objects such as stones at the bottom of the cable. When a car runs over it, the stones pierce the cable and cause it to break.

[0004] Based on the above reasons, the utility model provides an irradiated low-smoke halogen-free flame-retardant compression-resistant cable. Utility Model Content

[0005] The utility model aims to provide an irradiated low-smoke halogen-free flame-retardant compression-resistant cable to solve the problems existing in the prior art.

[0006] To achieve the above purpose, the utility model provides the following solution: The utility model provides an irradiated low-smoke halogen-free flame-retardant compression-resistant cable, including:

[0007] A communication optical fiber, wherein the communication optical fiber is transmitted in the protective tube;

[0008] a first protective layer, the first protective layer being arranged outside the protective tube;

[0009] an insulating layer, wherein the insulating layer is arranged outside the first protective layer;

[0010] a second protective layer, the second protective layer being arranged outside the first protective layer;

[0011] an anti-corrosion layer, the anti-corrosion layer being arranged outside the second protective layer;

[0012] A pressure-resistant buffer layer, the pressure-resistant buffer layer comprising a plurality of outer buffer sleeves spirally twisted outside the anti-corrosion layer, an inner buffer sleeve coaxially arranged inside the outer buffer sleeve, a plurality of support plates detachably connected between the inner buffer sleeve and the outer buffer sleeve at equal circumferential intervals, and the support plates are vertically arranged between the inner buffer sleeve and the outer buffer sleeve;

[0013] A waterproof layer is coated outside the outer buffer sleeve.

[0014] According to the irradiated low-smoke halogen-free flame-retardant and pressure-resistant cable provided by the utility model, the first protective layer includes a first protective tube sleeved outside the protective tube, a plurality of inner armor steel wires are arranged between the first protective tube and the protective tube, and the plurality of inner armor steel wires are spirally wound on the outer wall of the protective tube.

[0015] According to the irradiated low-smoke halogen-free flame-retardant and pressure-resistant cable provided by the utility model, the insulating layer comprises a polyethylene plastic tube, the polyethylene plastic tube is sleeved on the outer wall of the first protective tube, and the outer wall of the first protective tube is in contact with the inner wall of the polyethylene plastic tube.

[0016] According to the irradiated low-smoke halogen-free flame-retardant and pressure-resistant cable provided by the utility model, the second protective layer includes a plurality of outer armor steel wires, and the plurality of outer armor steel wires are fixedly spirally wound side by side on the outside of the polyethylene plastic tube. An installation channel is opened at the center position of any of the outer armor steel wires along the axial direction, and a monitoring optical fiber is installed in the installation channel.

[0017] According to the irradiated low-smoke halogen-free flame-retardant and pressure-resistant cable provided by the utility model, the anti-corrosion layer includes a polypropylene rope fixedly wound around the outside of the outer armor steel wire, the outside of the polypropylene rope is coated with asphalt, and a plurality of the outer buffer sleeves are spirally twisted side by side on the outside of the polypropylene rope.

[0018] According to the irradiated low-smoke halogen-free flame-retardant and pressure-resistant cable provided by the utility model, the waterproof layer includes a waterproof rubber sleeve, the waterproof rubber sleeve is coaxially arranged with the polyethylene plastic tube, and the outer armor steel wire, the polypropylene rope and the outer buffer sleeve are all arranged between the waterproof rubber sleeve and the polyethylene plastic tube.

[0019] According to the irradiated low-smoke halogen-free flame-retardant and pressure-resistant cable provided by the utility model, the outer wall of the inner buffer sleeve and the inner wall of the outer buffer sleeve are respectively provided with card grooves, and the two ends of the support plate are respectively fixedly connected with arc-shaped card plates, and the arc-shaped card plates are carded in the card grooves.

[0020] The utility model discloses the following technical effects:

[0021] The utility model improves the ability of the cable to withstand external forces through the first protective layer and the second protective layer, and can reduce the impact force generated by the cable when it is subjected to vertical impact through the arrangement of the inner buffer sleeve and the outer buffer sleeve. The compression-resistant buffer layer adopts a hollow structure to reduce the weight of the cable while ensuring the bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the structure of the utility model irradiated low-smoke halogen-free flame-retardant compression-resistant cable;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0025] Among them, 1. Communication optical fiber; 2. Protection tube; 3. Outer buffer sleeve; 4. Inner buffer sleeve; 5. Support plate; 6. First protection tube; 7. Inner armor steel wire; 8. Polyethylene plastic tube; 9. Outer armor steel wire; 10. Polypropylene rope; 11. Waterproof rubber sleeve; 12. Arc pallet. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] Reference Figure 1-2 The utility model provides an irradiated low-smoke halogen-free flame-retardant and pressure-resistant cable, comprising:

[0029] Communication optical fiber 1, the communication optical fiber 1 is transmitted in the protection tube 2;

[0030] A first protective layer, the first protective layer is arranged outside the protective tube 2;

[0031] An insulating layer, the insulating layer is arranged outside the first protective layer;

[0032] A second protective layer, the second protective layer is arranged outside the first protective layer;

[0033] An anti-corrosion layer, the anti-corrosion layer is arranged outside the second protective layer;

[0034] The compression buffer layer includes a plurality of outer buffer sleeves 3 spirally twisted outside the anti-corrosion layer, an inner buffer sleeve 4 is coaxially arranged inside the outer buffer sleeve 3, and a plurality of support plates 5 are detachably connected between the inner buffer sleeve 4 and the outer buffer sleeve 3 at equal circumferential intervals, and the support plates 5 are vertically arranged between the support plates 5 and the inner buffer sleeve 4 and the outer buffer sleeve 3;

[0035] A waterproof layer is coated on the outside of the outer buffer sleeve 3 .

[0036] The utility model improves the ability of the cable to withstand external forces through the first protective layer and the second protective layer. The arrangement of the inner buffer sleeve 4 and the outer buffer sleeve 3 can reduce the impact force generated when the cable is subjected to vertical impact. The compressive buffer layer adopts a hollow structure to reduce the weight of the cable while ensuring the bearing capacity.

[0037] According to a further optimized solution, the first protective layer includes a first protective tube 6 sleeved outside the protective tube 2 , a plurality of inner armor steel wires 7 are arranged between the first protective tube 6 and the protective tube 2 , and the plurality of inner armor steel wires 7 are spirally wound on the outer wall of the protective tube 2 .

[0038] According to a further optimized solution, the insulating layer includes a polyethylene plastic tube 8 , which is sleeved on the outer wall of the first protective tube 6 , and the outer wall of the first protective tube 6 is in contact with the inner wall of the polyethylene plastic tube 8 .

[0039] According to a further optimization scheme, the second protective layer includes a plurality of outer armor steel wires 9, which are fixedly spirally wound side by side on the outside of the polyethylene plastic tube 8, and an installation channel is opened along the axial direction at the center position of any outer armor steel wire 9, and a monitoring optical fiber is installed in the installation channel.

[0040] The setting of monitoring optical fiber can be used to monitor the on-off status of the cable, so as to quickly locate the damaged position when the cable is damaged so as to carry out emergency repairs, thus reducing the difficulty of maintenance.

[0041] According to a further optimized solution, the anti-corrosion layer includes a polypropylene rope 10 fixedly wound around the outside of the outer armor steel wire 9 , the outside of the polypropylene rope 10 is coated with asphalt, and a plurality of outer buffer sleeves 3 are spirally twisted side by side on the outside of the polypropylene rope 10 .

[0042] Further optimizing the scheme, the waterproof layer includes a waterproof rubber sleeve 11, the waterproof rubber sleeve 11 is coaxially arranged with the polyethylene plastic tube 8, and the outer armor steel wire 9, the polypropylene rope 10, and the outer buffer sleeve 3 are all arranged between the waterproof rubber sleeve 11 and the polyethylene plastic tube 8. The cooperation of the inner armor steel wire 7 and the outer armor steel wire 9 greatly improves the bearing capacity of the cable and ensures its use strength.

[0043] It should be noted that in order to ensure the tightness of the internal structure of the cable, the spiral directions of the outer armor steel wire 9 and the polypropylene rope 10 are opposite, and the spiral directions of the polypropylene rope 10 and the outer buffer sleeve 3 are opposite, thereby achieving mutual extrusion and ensuring the compactness of the internal structure of the cable.

[0044] To further optimize the solution, the outer wall of the inner buffer sleeve 4 and the inner wall of the outer buffer sleeve 3 are respectively provided with a card slot, and the two ends of the support plate 5 are respectively fixedly connected with an arc card plate 12, and the arc card plate 12 is clamped in the card slot. The support plate 5 is made of hard plastic material and can deform accordingly following the spiral direction of the outer buffer sleeve 3. The provision of the arc card plate 12 and the arc card slot can facilitate the assembly of parts on the one hand, and on the other hand, can make the inner buffer sleeve 4 evenly stressed, improve the bearing capacity of the inner buffer sleeve 4, and avoid direct damage to the cable under strong pressure.

[0045] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. An irradiated low-smoke halogen-free flame-retardant compression-resistant cable, characterized in that: include: A communication optical fiber (1), wherein the communication optical fiber (1) is transmitted in a protective tube (2); A first protective layer, the first protective layer being arranged outside the protective tube (2); an insulating layer, wherein the insulating layer is arranged outside the first protective layer; a second protective layer, the second protective layer being arranged outside the first protective layer; an anti-corrosion layer, the anti-corrosion layer being arranged outside the second protective layer; A pressure-resistant buffer layer, the pressure-resistant buffer layer comprising a plurality of outer buffer sleeves (3) spirally twisted outside the anti-corrosion layer, an inner buffer sleeve (4) coaxially arranged inside the outer buffer sleeve (3), a plurality of support plates (5) detachably connected at circumferentially equal intervals between the inner buffer sleeve (4) and the outer buffer sleeve (3), the support plates (5) being vertically arranged between the support plates (5) and the inner buffer sleeve (4) and the outer buffer sleeve (3); A waterproof layer, the waterproof layer being coated outside the outer buffer sleeve (3).

2. The irradiated low-smoke halogen-free flame-retardant compression-resistant cable according to claim 1, characterized in that: The first protective layer comprises a first protective tube (6) sleeved outside the protective tube (2), a plurality of inner armor steel wires (7) are arranged between the first protective tube (6) and the protective tube (2), and the plurality of inner armor steel wires (7) are spirally wound on the outer wall of the protective tube (2).

3. The irradiated low-smoke halogen-free flame-retardant compression-resistant cable according to claim 2, characterized in that: The insulating layer comprises a polyethylene plastic tube (8), which is sleeved on the outer wall of the first protective tube (6), and the outer wall of the first protective tube (6) is in contact with the inner wall of the polyethylene plastic tube (8).

4. The irradiated low-smoke halogen-free flame-retardant compression-resistant cable according to claim 3, characterized in that: The second protective layer comprises a plurality of outer armor steel wires (9), wherein the plurality of outer armor steel wires (9) are fixedly arranged in a spiral manner side by side on the outside of the polyethylene plastic tube (8), and an installation channel is provided at the center position of any of the outer armor steel wires (9) along the axial direction, and a monitoring optical fiber is installed in the installation channel.

5. The irradiated low-smoke halogen-free flame-retardant compression-resistant cable according to claim 4, characterized in that: The anti-corrosion layer comprises a polypropylene rope (10) fixedly wound around the outside of the outer armor steel wire (9), the outside of the polypropylene rope (10) is coated with asphalt, and a plurality of the outer buffer sleeves (3) are spirally twisted side by side on the outside of the polypropylene rope (10).

6. The irradiated low-smoke halogen-free flame-retardant compression-resistant cable according to claim 5, characterized in that: The waterproof layer comprises a waterproof rubber sleeve (11), the waterproof rubber sleeve (11) is coaxially arranged with the polyethylene plastic tube (8), and the outer armor steel wire (9), the polypropylene rope (10), and the outer buffer sleeve (3) are all arranged between the waterproof rubber sleeve (11) and the polyethylene plastic tube (8).

7. The irradiated low-smoke halogen-free flame-retardant compression-resistant cable according to claim 1, characterized in that: The outer wall of the inner buffer sleeve (4) and the inner wall of the outer buffer sleeve (3) are respectively provided with a clamping groove, and the two ends of the support plate (5) are respectively fixedly connected with an arc-shaped clamping plate (12), and the arc-shaped clamping plate (12) is clamped in the clamping groove.

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