CN206960744U - Layer twisted type flame retardant optical fiber cable for direct burial - Google Patents
Layer twisted type flame retardant optical fiber cable for direct burial Download PDFInfo
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- CN206960744U CN206960744U CN201720784103.0U CN201720784103U CN206960744U CN 206960744 U CN206960744 U CN 206960744U CN 201720784103 U CN201720784103 U CN 201720784103U CN 206960744 U CN206960744 U CN 206960744U
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Abstract
The utility model discloses a kind of layer twisted type flame retardant optical fiber cable for direct burial, including metal reinforcement (1), metal reinforcement (1) is twisted outside multifiber unit (2), and cohesive inner sheath (3) and fire-retardant oversheath (4) are sequentially provided with outside fiber unit (2)；Aluminium-plastic tape (5) is provided between described fiber unit (2) and bonding inner sheath (3), bonds and is provided with composite steel-plastic belt (6) between inner sheath (3) and fire-retardant oversheath (4)；Described fiber unit (2) includes Loose tube (21), is provided with multifiber (22) in Loose tube (21), and the space in Loose tube (21) is also filled with fine cream (23)；Described Loose tube (21) inwall is provided with expanded by heating layer (24), and expanded by heating layer (24) is provided with dashpot (25), and dashpot (25) inwall is provided with flame-retardant layer (26).The utility model has the characteristics of good anti-pressure ability and good flame retardation effect.
Description
Technical field
A kind of optical cable is the utility model is related to, particularly a kind of layer twisted type flame retardant optical fiber cable for direct burial.
Background technology
With the development of optical communication technique, the rapid development of optical cable industry, the use environment of optical cable also has multifarious feature.
Optical fiber cable for direct burial is not only laid in underground now, can sometimes apply in tunnel, subway place, thus have to the performance of optical cable into
The requirement of one step.
Utility model content
The purpose of this utility model is, there is provided a kind of layer twisted type flame retardant optical fiber cable for direct burial.It has good anti-pressure ability
And the characteristics of good flame retardation effect.
The technical solution of the utility model：Layer twisted type flame retardant optical fiber cable for direct burial, including metal reinforcement, metal reinforcement twist outside
Conjunction has multifiber unit, and cohesive inner sheath and fire-retardant oversheath are sequentially provided with outside fiber unit；Described fiber unit and viscous
Aluminium-plastic tape is provided between knot inner sheath, bonds and is provided with composite steel-plastic belt between inner sheath and fire-retardant oversheath；Described light
Fine unit includes Loose tube, is provided with multifiber in Loose tube, and the space in Loose tube is also filled with fine cream；Described Loose tube
Inwall is provided with expanded by heating layer, and expanded by heating layer is provided with dashpot, and dashpot inwall is provided with flame-retardant layer.
In foregoing layer twisted type flame retardant optical fiber cable for direct burial, the space between described fiber unit is filled with cable cream.
In foregoing layer twisted type flame retardant optical fiber cable for direct burial, described aluminium-plastic tape includes aluminium strip, and aluminium strip lateral surface is coated with
Plastic layer.
In foregoing layer twisted type flame retardant optical fiber cable for direct burial, described composite steel-plastic belt includes steel band, inside and outside steel band on face
It is coated with the second plastic layer.
In foregoing layer twisted type flame retardant optical fiber cable for direct burial, the metal reinforcement is externally provided with polyethylene layer.
In foregoing layer twisted type flame retardant optical fiber cable for direct burial, the fire-retardant oversheath is fire-retardant including the first flame retardant sheath layer and second
Restrictive coating, cushion is provided between the first flame retardant sheath layer and the second flame retardant sheath layer；It is all provided with inside and outside described cushion
There is reinforcing fiber band.
Compared with prior art, the utility model between fiber unit and bonding inner sheath by setting what is be longitudinally arranged
Aluminium-plastic tape, the composite steel-plastic belt being longitudinally arranged is set between bonding inner sheath and fire-retardant oversheath, improves optical cable
Permeation-proof tidal energy power, while double sheath double armature structures cause whole optical cable to have good anti-pressure ability, and can be effective
Prevent the infringement of rodent；By filling fine cream in Loose tube, optical fiber can be protected, and in Loose tube
Expanded by heating layer is set on wall, the fixed effect of sealing can be played to optical fiber when optical cable is heated, can effectively protect optical fiber, and
Dashpot is set on expanded by heating layer, flame-retardant layer is provided with dashpot inwall, further optical fiber is played a protective role.And
And oversheath is strong using fire-retardant oversheath, flame-retardant performance made of fire-retardant material.In summary, the utility model has
The characteristics of good anti-pressure ability and good flame retardation effect.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is Fig. 1 sectional view.
Mark in accompanying drawing for：1- metal reinforcements, 2- fiber units, 3- bond inner sheath, the fire-retardant oversheaths of 4-, 5- aluminium
Plastic composite strip, 6- composite steel-plastic belts, 7- cable cream, 8- polyethylene layers, 21- Loose tubes, 22- optical fiber, 23- fibre cream, 24- expanded by heating
Layer, 25- dashpots, 26- flame-retardant layers, the flame retardant sheath layers of 41- first, the flame retardant sheath layers of 42- second, 43- cushions, 44- strengthen
Fiber band, 51- aluminium strips, 52- plastic layers, 61- steel bands, the plastic layers of 62- second.
Embodiment
The utility model is further described with reference to the accompanying drawings and examples, but is not intended as to the utility model
The foundation of limitation.
Embodiment.Layer twisted type flame retardant optical fiber cable for direct burial, form as depicted in figs. 1 and 2, including metal reinforcement 1, metal are strengthened
It is twisted outside part 1 to have multifiber unit 2, it is sequentially provided with cohesive inner sheath 3 and fire-retardant oversheath 4 outside fiber unit 2；Described light
Fine unit 2 and bond and be provided with the aluminium-plastic tape 5 that is longitudinally arranged between inner sheath 3, bond inner sheath 3 and fire-retardant oversheath 4 it
Between be provided with the composite steel-plastic belt 6 that is longitudinally arranged；Described fiber unit 2 includes Loose tube 21, and more light are provided with Loose tube 21
Fibre 22, the space in Loose tube 21 are also filled with fine cream 23；The described inwall of Loose tube 21 is provided with expanded by heating layer 24, is heated
Expanding layer 24 is provided with dashpot 25, and the inwall of dashpot 25 is provided with flame-retardant layer 26.
Space between described fiber unit 2 is filled with cable cream 7.
Described aluminium-plastic tape 5 includes aluminium strip 51, and the lateral surface of aluminium strip 51 is coated with plastic layer 52.
Described composite steel-plastic belt 6 includes steel band 61, and the second plastic layer 62 is coated with face inside and outside steel band 61.
The metal reinforcement 1 is externally provided with polyethylene layer 8.
The fire-retardant oversheath 4 includes the first flame retardant sheath layer 41 and the second flame retardant sheath layer 42, the first flame retardant sheath layer
41 and second are provided with cushion 43 between flame retardant sheath layer 42；Reinforcing fiber band is equipped with inside and outside described cushion 43
44。
The cohesive inner sheath 3 is made up of polythene material.Described cushion is also polyethylene material.
Described reinforcing fiber band 44 includes more Fiber glass rod circumference and arranged, and is formed by resin high temperature adhesives.
Manufacturing process of the present utility model：By single mode or the optical fiber of multimode 22 be inserted in by the plastics of high-modulus make in fill out
Fill in the Loose tube 21 of waterproofing compound (fine cream).The center of cable core is a metal reinforcement 1, for the optical cable of some core numbers
For, also extrude one polyethylene layer 8 outside metal reinforcement.Loose tube (and gasket for packing) is twisted into tightly around center reinforcemen 1
Gather and circular cable core, the gap in cable core is filled with cable cream 7.Layer of polyethylene material is squeezed after the vertical bag of the aluminium-plastic tape 5 of plastic-coated
Bonding inner sheath 3, the first flame retardant sheath layer of extrusion molding 41 after the vertical bag of the composite steel-plastic belt of double plastic-coated, then in the first fire-retardant shield
Reinforcing fiber band 44 is set outside jacket layer 41, cushion 43 is set outside reinforcing fiber band 44, cushion 43 is external to set gradually reinforcing
The flame retardant sheath layer 42 of fiber band 44 and second.
Claims (6)
1. layer twisted type flame retardant optical fiber cable for direct burial, it is characterised in that：Including metal reinforcement (1), metal reinforcement (1) outside be twisted have it is more
Root fiber unit (2), fiber unit (2) are sequentially provided with cohesive inner sheath (3) and fire-retardant oversheath (4) outside；Described optical fiber list
Aluminium-plastic tape (5) is provided between first (2) and bonding inner sheath (3), bonds and is set between inner sheath (3) and fire-retardant oversheath (4)
There is composite steel-plastic belt (6)；Described fiber unit (2) includes Loose tube (21), and multifiber (22) is provided with Loose tube (21),
Space in Loose tube (21) is also filled with fine cream (23)；Described Loose tube (21) inwall is provided with expanded by heating layer (24),
Expanded by heating layer (24) is provided with dashpot (25), and dashpot (25) inwall is provided with flame-retardant layer (26).
2. layer twisted type flame retardant optical fiber cable for direct burial according to claim 1, it is characterised in that：Between described fiber unit (2)
Space be filled with cable cream (7).
3. layer twisted type flame retardant optical fiber cable for direct burial according to claim 1, it is characterised in that：Described aluminium-plastic tape (5) bag
Aluminium strip (51) is included, aluminium strip (51) lateral surface is coated with plastic layer (52).
4. layer twisted type flame retardant optical fiber cable for direct burial according to claim 1, it is characterised in that：Described composite steel-plastic belt (6) bag
Include steel band (61), the second plastic layer (62) is coated with face inside and outside steel band (61).
5. layer twisted type flame retardant optical fiber cable for direct burial according to claim 1, it is characterised in that：Metal reinforcement (1) peripheral hardware
There is polyethylene layer (8).
6. layer twisted type flame retardant optical fiber cable for direct burial according to claim 1, it is characterised in that：The fire-retardant oversheath (4) includes
First flame retardant sheath layer (41) and the second flame retardant sheath layer (42), the first flame retardant sheath layer (41) and the second flame retardant sheath layer (42)
Between be provided with cushion (43)；Reinforcing fiber band (44) is equipped with inside and outside described cushion (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720784103.0U CN206960744U (en) | 2017-06-30 | 2017-06-30 | Layer twisted type flame retardant optical fiber cable for direct burial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720784103.0U CN206960744U (en) | 2017-06-30 | 2017-06-30 | Layer twisted type flame retardant optical fiber cable for direct burial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206960744U true CN206960744U (en) | 2018-02-02 |
Family
ID=61386571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720784103.0U Active CN206960744U (en) | 2017-06-30 | 2017-06-30 | Layer twisted type flame retardant optical fiber cable for direct burial |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206960744U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112180527A (en) * | 2020-10-11 | 2021-01-05 | 邹莎 | Improved sleeve layer-stranded cable |
-
2017
- 2017-06-30 CN CN201720784103.0U patent/CN206960744U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112180527A (en) * | 2020-10-11 | 2021-01-05 | 邹莎 | Improved sleeve layer-stranded cable |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 313009 No. 2299 East strong Garden Road, Nanxun Economic Development Zone, Huzhou, Zhejiang Patentee after: Zhejiang Dongtong optical network IOT Technology Co., Ltd Address before: 313009 No. 2299 East strong Garden Road, Nanxun Economic Development Zone, Huzhou, Zhejiang Patentee before: Zhejiang Hengtong optical network IOT Technology Co., Ltd. |