CN214669779U

CN214669779U - High-temperature-resistant flame-retardant four-core optical cable

Info

Publication number: CN214669779U
Application number: CN202121229482.XU
Authority: CN
Inventors: 曹小东
Original assignee: Shenzhen Shihe Optical Cable Technology Co ltd
Current assignee: Shenzhen Shihe Optical Cable Technology Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-11-09
Anticipated expiration: 2031-06-03

Abstract

The utility model discloses a high temperature resistant fire-retardant type four-core optical cable, including the PE sheath, fire-retardant layer is worn to be equipped with in the inside of PE sheath, the wearing layer is worn to be equipped with in the inside of fire-retardant layer, one side fixed mounting that the inner wall on fire-retardant layer is located the wearing layer has the compressive layer, the inside on wearing layer is provided with PBT pine cover layer, the inside on PBT pine cover layer is provided with the optic fibre body, the inside on fire-retardant layer is located center department and is provided with central reinforcement, be provided with around the compressive layer and separate the region fire-retardant layer's inside. A high temperature resistant fire-retardant type four-core optical cable, belong to the optical cable field, can improve four-core optical fiber at fire-retardant in situ portion's resistance to compression and wear resistance, when using, can prevent that PE sheath pressurized from leading to fire-retardant layer to produce the deformation of very big degree, reduce four optical fiber body that the cover has PBT pine jacket layer and extrude each other and rub the risk that causes the loss to improve the life of four-core optical cable, guarantee data transmission's stability.

Description

High-temperature-resistant flame-retardant four-core optical cable

Technical Field

The utility model relates to an optical cable field, in particular to high temperature resistant fire-retardant type four-core optical cable.

Background

The optical cable is manufactured for meeting the performance specification of optics, machinery or environment, and is a communication cable component which uses one or more optical fibers as transmission media and can be used singly or in groups in a cladding sheath, the optical cable mainly comprises optical fibers (thin glass fibers like hair), a plastic protective sleeve and a plastic outer sheath, metals such as gold, silver, copper and aluminum and the like are not contained in the optical cable, the recovery value is not generally available, the optical cable is a communication line which is formed by a certain number of optical fibers according to a certain mode to form a cable core, the outer sheath is wrapped outside, and the outer sheath is also wrapped outside, so that the optical signal transmission is realized, namely: the cable formed by optical fiber (optical transmission carrier) through certain technology, the basic structure of the optical cable generally comprises cable core, reinforced steel wire, filler and sheath, the 4-core optical cable is a communication cable with transmission speed as light, the 4-core optical cable has wide bandwidth, high transmission speed, good confidentiality, anti-electromagnetic interference, good insulativity and good chemical stability, and the common model of the 4-core optical cable mainly comprises: the cable comprises two specification types, namely a GYXTW central beam tube type (armored) and a GYXTY central beam tube type (unarmored), and at present, a four-core optical cable added with a flame retardant layer appears on the market and has high temperature resistance; however, the existing high-temperature-resistant flame-retardant four-core optical cable has certain disadvantages when in use, and the PE sheath on the surface of the four-core optical cable can cause the flame-retardant layer added inside the PE sheath to deform to a great extent after being pressed, so that the four optical fiber bodies sleeved with the PBT loose sleeve layer are mutually extruded and rubbed, and the service life of the four-core optical cable is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a high temperature resistant fire-retardant type four-core optical cable, can effectively solve the high temperature resistant fire-retardant type four-core optical cable that has in the background art and have certain drawback when using, can lead to the deformation that its inside fire-retardant layer that adds to produce very big degree behind the PE sheath pressurized on four-core optical cable surface for four covers have the optic fibre body on PBT pine coat to extrude and rub each other, thereby have reduced the life's of four-core optical cable problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a high temperature resistant fire-retardant type four-core optical cable, includes the PE sheath, fire-retardant layer is worn to be equipped with in the inside of PE sheath, the wearing layer is worn to be equipped with in the inside of fire-retardant layer, one side fixed mounting that the inner wall on fire-retardant layer is located the wearing layer has the compressive layer, the inside on wearing layer is provided with PBT pine cover layer, the inside on PBT pine cover layer is provided with the optic fibre body, the inside on fire-retardant layer is located center department and is provided with central reinforcement.

Preferably, a separation region is arranged inside the flame-retardant layer and around the pressure-resistant layer, and the separation region is filled with an optical fiber filling paste.

Preferably, the inner wall of abrasionproof layer and the surface laminating of PBT pine cover layer and central reinforcement can improve four-core fiber at the inside resistance to compression and the wearability of fire-retardant in layer, when using, can prevent that PE sheath pressurized from leading to fire-retardant layer to produce the deformation of very big degree, reduces four optical fiber body that the cover has PBT pine cover layer and extrudes each other and rub the risk that causes the loss to, thereby, improved the life of four-core optical cable, ensure data transmission's stability.

Preferably, four optical fiber bodies are arranged inside the flame-retardant layer, and the four optical fiber bodies are arranged around the central reinforcing member.

Preferably, the diameter of the optical fiber body is 0.25mm, and the outer diameter of the PBT loose sleeve layer is 0.9 mm.

Preferably, the central reinforcing member is composed of a plurality of strands of high-strength aramid fibers, and the flame-retardant layer is a low-smoke halogen-free flame-retardant sheath material.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses in, through the resistance to compression layer and the abrasionproof layer that sets up, can improve four-core optic fibre at the inside resistance to compression and the wear resistance of fire-retardant in situ, when using, can prevent that PE sheath pressurized from leading to fire-retardant layer to produce the deformation of very big degree, reduce four optical fiber body that the cover has PBT pine jacket layer and extrude each other and rub the risk that causes the loss to improve the life of four-core optical cable, ensured data transmission's stability.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

fig. 3 is a schematic view of the structure of the flame-retardant sleeve of the present invention.

In the figure: 1. a PE sheath; 2. a flame retardant layer; 3. an anti-wear layer; 4. a pressure resistant layer; 5. a PBT loose sleeve layer; 6. a central reinforcement; 7. an optical fiber body; 8. separating the regions.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

As shown in fig. 1-3, a high temperature resistant fire-retardant type four-core optical cable, including PE sheath 1, fire-retardant layer 2 is worn to be equipped with in the inside of PE sheath 1, abrasionproof layer 3 is worn to be equipped with in the inside of fire-retardant layer 2, one side fixed mounting that the inner wall of fire-retardant layer 2 is located abrasionproof layer 3 has compressive layer 4, the inside of abrasionproof layer 3 is provided with PBT loose cover layer 5, the inside of PBT loose cover layer 5 is provided with optic fibre body 7, the inside of fire-retardant layer 2 is located center department and is provided with central reinforcement 6.

The inside of the flame retardant layer 2 is provided with a partition region 8 around the pressure resistant layer 4, and the inside of the partition region 8 is filled with an optical fiber filling paste.

The inner wall of the wear-resistant layer 3 is attached to the outer surfaces of the PBT loose sleeve layer 5 and the central reinforcing piece 6.

Four optical fiber bodies 7 are arranged inside the flame-retardant layer 2, and the four optical fiber bodies 7 are arranged around the central reinforcing member 6.

The diameter of the optical fiber body 7 is 0.25mm, and the outer diameter of the PBT loose sleeve layer 5 is 0.9 mm.

The central reinforcement 6 is composed of a plurality of strands of high-strength aramid fibers, and the flame-retardant layer 2 is made of a low-smoke halogen-free flame-retardant sheath material.

It should be noted that, the utility model relates to a high temperature resistant fire-retardant type four-core optical cable, the inside on fire-retardant layer 2 is located anti-pressure layer 4 and is provided with around separating region 8, the inside packing that separates region 8 has optic fibre filling paste, optic fibre body 7 is located fire-retardant layer 2's inside is provided with four, four optic fibre bodies 7 are arranged around central reinforcement 6, fire-retardant layer 2 is low smoke and zero halogen fire-retardant sheath material, can improve four-core optical fibre at the inside resistance to compression and the wear resistance of fire-retardant layer, when using, can prevent that PE sheath pressurized from leading to fire-retardant layer to produce the deformation of very big degree, reduce four optical fibre bodies that the cover has PBT pine jacket layer and extrude each other and rub the risk that causes the loss, thereby the life of four-core optical cable has been improved, guarantee data transmission's stability.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. Although embodiments of the present invention have been shown and described, it is not intended to limit the scope of the invention, which is defined by the appended claims and their equivalents, and all changes in equivalent structure or equivalent flow process that can be made by using the contents of the specification and drawings or applied directly or indirectly to other related technical fields are intended to be embraced therein by the scope of the invention.

Claims

1. The high-temperature-resistant flame-retardant four-core optical cable is characterized in that: including PE sheath (1), fire-retardant layer (2) are worn to be equipped with in the inside of PE sheath (1), wear to be equipped with wearing layer (3) in the inside of fire-retardant layer (2), one side fixed mounting that the inner wall of fire-retardant layer (2) is located wearing layer (3) has compressive layer (4), the inside of wearing layer (3) is provided with PBT pine jacket layer (5), the inside of PBT pine jacket layer (5) is provided with optic fibre body (7), the inside of fire-retardant layer (2) is located center department and is provided with central reinforcement (6).

2. The high-temperature-resistant flame-retardant four-core optical cable according to claim 1, characterized in that: and a separation region (8) is arranged in the flame-retardant layer (2) and around the pressure-resistant layer (4), and the inside of the separation region (8) is filled with optical fiber filling paste.

3. The high-temperature-resistant flame-retardant four-core optical cable according to claim 2, characterized in that: the inner wall of the anti-abrasion layer (3) is attached to the outer surfaces of the PBT loose sleeve layer (5) and the central reinforcing piece (6).

4. The high-temperature-resistant flame-retardant four-core optical cable according to claim 3, characterized in that: the optical fiber body (7) is provided with four parts in the flame-retardant layer (2), and the four optical fiber bodies (7) are arranged around the central reinforcing part (6).

5. The high-temperature-resistant flame-retardant four-core optical cable according to claim 4, wherein: the diameter of the optical fiber body (7) is 0.25mm, and the outer diameter of the PBT loose sleeve layer (5) is 0.9 mm.

6. The high-temperature-resistant flame-retardant four-core optical cable according to claim 5, characterized in that: the central reinforcement (6) is composed of a plurality of strands of high-strength aramid fibers, and the flame-retardant layer (2) is a low-smoke halogen-free flame-retardant sheath material.