CN2456180Y - Central tubular optical cable for preventing shrinkage of casing - Google Patents
Central tubular optical cable for preventing shrinkage of casing Download PDFInfo
- Publication number
- CN2456180Y CN2456180Y CN 00264096 CN00264096U CN2456180Y CN 2456180 Y CN2456180 Y CN 2456180Y CN 00264096 CN00264096 CN 00264096 CN 00264096 U CN00264096 U CN 00264096U CN 2456180 Y CN2456180 Y CN 2456180Y
- Authority
- CN
- China
- Prior art keywords
- beam tube
- plastic
- central tubular
- optical cable
- center
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The utility model relates to a central tubular optical cable which is used for preventing the constriction of a beam tube and has the function of water stopping. The utility model comprises a central beam tube and an optical communication unit which is arranged in the central beam tube, wherein the external side of the central beam tube is coated by a plastic steel jacket, and a dry type water stopping object is arranged in a gap between the plastic steel jacket and the central beam tube; hot melt rubber rings are arranged between the plastic steel jacket and the central beam tube in the longitudinal direction at intervals, and are connected tightly with the plastic steel jacket and the central beam tube. The utility model through the fixation action of the hot melt rubber rings can effectively solve the problem that the central beam tube retracts in excess in low temperature, and at the same time a water stopping property of the optical cable can be further strengthened by the seal and isolation action of the hot melt rubber rings.
Description
The utility model relates to a kind of block water more by force central tubular optical cable of moisture-proof function of beam tube retraction and tool that prevents.
Optical cable contains much information owing to transmission and is applied to field of communication transmission increasingly extensively.The central tubular optical cable is a kind of version in the existing optical cable, and it comprises the optical fiber that is located in the cable core, is with the central beam pipe outside optical fiber, and the center beam tube is outward the plastic-steel sheath.For anti-sealing and moisture enter behind the optical cable along the optical cable longtitudinal dispersion, mode is to place continuous waterstop (yarn) in the gap between center beam tube and plastic-steel sheath preferably, as disclosed in Chinese patent CN218011; Also can place water-proofing powder in the gap between center beam tube and the sheath, this technology contents is recorded in the U.S. Pat 5740295.Above-mentioned these have been placed the central tubular optical cable of waterstop or water-proofing powder owing to exist the gap to fail to be closely linked between center beam tube and sheath, when ambient temperature changes, the center beam tube will produce contraction to a certain degree, this contraction will cause optic fibre force in the cable, and when fiber cable laying big or wind is big further aggravation of this kind situation when regional in the cold temperature difference, when serious even can cause the communication disruption accident.
The purpose of this utility model is intended to the deficiency that exists at above-mentioned prior art and a kind of central tubular optical cable that prevents the beam tube retraction is provided, and it can not only effectively prevent center beam tube retraction, and can also further improve the performance of optical cable water-blocking protection against the tide.
The utility model is realized by following technical scheme: include center beam tube 3 and be arranged on the interior optical communication element 1 of center beam tube, in center beam tube outsourcing the plastic-steel sheath is arranged, be provided with dry type water-blocking material 6 in the gap between plastic-steel sheath and the center beam tube, its difference is longitudinally to be provided with and both allo hot melt adhesive rings 5 at interval between plastic-steel sheath and center beam tube.
Press such scheme, described dry type water-blocking material 6 is dry type water blocking yarn (band) or water-proofing powder; Described plastic-steel sheath is made of composite steel-plastic belt 7 outer coated sheaths 8; Described optical communication element 1 is optical fiber or fibre ribbon.
The utility model is owing to be provided with the hot melt adhesive ring of combining closely with them between center beam tube and plastic-steel sheath, make the center beam tube closely linked by hot melt adhesive ring and plastic-steel sheath, the center beam tube is subjected to the fixing of plastic-steel sheath and restriction can not be shunk too much, thereby has solved the problem that beam tube excessive at low temperatures retraction in center makes optic fibre force effectively.On the other hand, the hot melt adhesive ring is equivalent to install multiple tracks between center beam tube and plastic-steel sheath the sealing ring that blocks water is set, it will be with the acting in conjunction of dry type water blocking yarn, and the water and the moisture that prevent to enter in the optical cable longitudinally permeate, and the block-water performance of optical cable is further strengthened.
Fig. 1 is the transverse cross-sectional view of an embodiment of the utility model.
Further specify embodiment of the present utility model below in conjunction with accompanying drawing, include center beam tube 3, be provided with optical fiber in the beam tube of center as optical communication element 1, and be filled with filling compound 2, it outside the beam tube of center the plastic-steel sheath, the plastic-steel sheath is made of composite steel-plastic belt 7 outer coated sheaths 8, composite steel-plastic belt can be straight composite steel-plastic belt or embossing composite steel-plastic belt, composite steel-plastic belt and sheath are linked into one, in jacket wall, stiffener 4 can be set, to strengthen the tensile strength of optical cable, be provided with continuous dry type water blocking yarn 6 in the gap that between plastic-steel sheath and center beam tube, exists, the dry type water blocking yarn is bonded in yam surface by the super-strong moisture absorbing expanded polymer and makes, or be spun into fiber and the polymer filament twisting forms by the super-strong moisture absorbing expanded polymer, dry type resistance formula yarn can be around pricking outside the beam tube of center, or can outside the beam tube of center, vertically directly put, or can vertically directly put and mix around pricking mutually, between plastic-steel sheath and center beam tube, longitudinally be provided with hot melt adhesive ring 5 mutually across a certain distance, the Internal and external cycle of hot melt adhesive ring overlaps tight the combination with center beam tube and plastic-steel, form sealing, the Main Ingredients and Appearance of hot melt adhesive ring is polyamide-based or rubber polymer, can play the double effects that prevents center beam tube retraction and strengthen block-water performance.
Claims (8)
1, a kind of central tubular optical cable that prevents the beam tube retraction, include center beam tube (3) and be arranged on the interior optical communication element (1) of center beam tube, in center beam tube outsourcing the plastic-steel sheath is arranged, be provided with dry type water-blocking material (6) in the gap between plastic-steel sheath and the center beam tube, it is characterized in that between plastic-steel sheath and center beam tube, longitudinally being provided with and both allo hot melt adhesive rings (5) at interval.
2, by the described central tubular optical cable that prevents the beam tube retraction of claim 1, it is characterized in that described dry type water-blocking material (6) is dry type water blocking yarn or water-proofing powder.
3, by claim 1 or the 2 described central tubular optical cables that prevent the beam tube retraction, it is characterized in that described plastic-steel sheath is made of composite steel-plastic belt (7) outer coated sheath (8).
4, by claim 1 or the 2 described central tubular optical cables that prevent the beam tube retraction, it is characterized in that optical communication element (1) is optical fiber or fibre ribbon.
5, by the described central tubular optical cable that prevents the beam tube retraction of claim 3, it is characterized in that in jacket wall, can being provided with stiffener (4).
6, by the described central tubular optical cable that prevents the beam tube retraction of claim 2, be provided with continuous dry type water blocking yarn (6) in the gap that it is characterized in that between plastic-steel sheath and center beam tube, existing.
7,, it is characterized in that dry type water blocking yarn (6) around pricking outside the beam tube of center, or outside the beam tube of center, vertically directly put, or vertically directly put and mix around pricking mutually by the described central tubular optical cable that prevents beam tube retraction of claim 6.
8, by claim 1 or the 2 described central tubular optical cables that prevent the beam tube retraction, the Main Ingredients and Appearance that it is characterized in that hot melt adhesive ring (5) is polyamide-based or rubber polymer, the Internal and external cycle of hot melt adhesive ring and center beam tube and plastic-steel sheath are combined closely, and form sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00264096 CN2456180Y (en) | 2000-12-27 | 2000-12-27 | Central tubular optical cable for preventing shrinkage of casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00264096 CN2456180Y (en) | 2000-12-27 | 2000-12-27 | Central tubular optical cable for preventing shrinkage of casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2456180Y true CN2456180Y (en) | 2001-10-24 |
Family
ID=33618899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00264096 Expired - Lifetime CN2456180Y (en) | 2000-12-27 | 2000-12-27 | Central tubular optical cable for preventing shrinkage of casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2456180Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054337A (en) * | 2016-08-08 | 2016-10-26 | 中天科技海缆有限公司 | Production assembly line and production technology of optical unit sheath |
| CN107367812A (en) * | 2017-09-04 | 2017-11-21 | 江苏亨通光电股份有限公司 | The parallel stiffener flexible optical cable of central tubular and fiber optic cable manufacture method |
| CN107411780A (en) * | 2017-08-10 | 2017-12-01 | 华中科技大学鄂州工业技术研究院 | A kind of ultrasonic endoscope |
| CN109143516A (en) * | 2018-11-26 | 2019-01-04 | 南京华信藤仓光通信有限公司 | A kind of embedded draw of sheath connects optical cable and production method |
-
2000
- 2000-12-27 CN CN 00264096 patent/CN2456180Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054337A (en) * | 2016-08-08 | 2016-10-26 | 中天科技海缆有限公司 | Production assembly line and production technology of optical unit sheath |
| CN107411780A (en) * | 2017-08-10 | 2017-12-01 | 华中科技大学鄂州工业技术研究院 | A kind of ultrasonic endoscope |
| CN107411780B (en) * | 2017-08-10 | 2020-07-31 | 华中科技大学鄂州工业技术研究院 | Ultrasonic endoscope |
| CN107367812A (en) * | 2017-09-04 | 2017-11-21 | 江苏亨通光电股份有限公司 | The parallel stiffener flexible optical cable of central tubular and fiber optic cable manufacture method |
| CN109143516A (en) * | 2018-11-26 | 2019-01-04 | 南京华信藤仓光通信有限公司 | A kind of embedded draw of sheath connects optical cable and production method |
| WO2020107960A1 (en) * | 2018-11-26 | 2020-06-04 | 南京华信藤仓光通信有限公司 | Sheath-embedded pull-out-connection optical cable and production method therefor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100449345C (en) | High count optical fiber cable | |
| US4770489A (en) | Ruggedized optical communication cable | |
| SE8501923L (en) | OPTICAL TELECABLE | |
| CN103487906A (en) | Manufacturing method of small-sized multi-core full-dry-type introduced optical cable | |
| NZ501461A (en) | Optical fibre cable core with strength members partially embedded in and gripped by buffer tube wall | |
| CN102023359A (en) | All-dielectric central tube type optical cable | |
| CA2009507A1 (en) | Optical fiber unit | |
| CN2456180Y (en) | Central tubular optical cable for preventing shrinkage of casing | |
| CN203535272U (en) | Miniature multi-core full-dry leading-in optical cable | |
| CN207780322U (en) | A kind of optical cable | |
| CN201255781Y (en) | High optical fiber density fine cord suitable for blowing laid | |
| CN208818887U (en) | Aerial optical cable | |
| CN104700946B (en) | Optical cable or cable or optoelectronic composite cable or the manufacture method of optoelectrical cable special-shaped packing gasket | |
| CN204009166U (en) | A kind of non-metallic optical fiber cables | |
| CA1098350A (en) | Fibre optical cables | |
| CN206400160U (en) | Outdoor use optical cable | |
| CN110095846A (en) | A kind of water-resistant armored anti-torsion optical cable and preparation method thereof | |
| CN109116497A (en) | Aerial optical cable | |
| CN209417379U (en) | Super high fiber count cable based on fiber bundle structure | |
| US4312565A (en) | Gas pressure tight optical cables | |
| CN207992521U (en) | A kind of indoor and outdoor leading in cable with stainless steel spiral armouring | |
| CN208818885U (en) | All dielectric flexibility access optical cable | |
| CN204790094U (en) | Layer stranded type optical cable | |
| CN208654387U (en) | A kind of enhanced big pulling force optical cable | |
| CN220106063U (en) | Cold-resistant twisted pair network cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20101227 Granted publication date: 20011024 |