WO2008113224A1 - Dispositif de scellement pour boitier d'epissure de cable optique - Google Patents

Dispositif de scellement pour boitier d'epissure de cable optique Download PDF

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Publication number
WO2008113224A1
WO2008113224A1 PCT/CN2007/001988 CN2007001988W WO2008113224A1 WO 2008113224 A1 WO2008113224 A1 WO 2008113224A1 CN 2007001988 W CN2007001988 W CN 2007001988W WO 2008113224 A1 WO2008113224 A1 WO 2008113224A1
Authority
WO
WIPO (PCT)
Prior art keywords
cable
nut
sealing ring
plastic
box
Prior art date
Application number
PCT/CN2007/001988
Other languages
English (en)
Chinese (zh)
Inventor
Zhikang Ru
Original Assignee
Zhikang Ru
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhikang Ru filed Critical Zhikang Ru
Publication of WO2008113224A1 publication Critical patent/WO2008113224A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/4471—Terminating devices ; Cable clamps
    • G02B6/44775—Cable seals e.g. feed-through
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/013—Sealing means for cable inlets
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/444—Systems or boxes with surplus lengths
    • G02B6/4453—Cassettes
    • G02B6/4454—Cassettes with splices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • H02G15/115—Boxes split perpendicularly to main cable direction

Definitions

  • the invention relates to a protection device for a fiber optic cable network connection point and an optical cable distribution point, in particular to an innovative sealing structure for an optical cable connector box installation optical cable seal adopting a nut rotating compression sealing ring to automatically hold the optical cable, and is suitable for the optical cable connector box pair.
  • the cable is tightly sealed in and out for easy installation and long-term sealing.
  • the optical cable in and out of the cable connector box should be sanded into a rough surface by sandpaper, and then the optical cable and the heat shrinkable sleeve can be penetrated.
  • the optical cable enters and exits the cable a lot of construction time is wasted, and if the grinding is uneven It will affect the fixing and sealing quality of the cable jacket, causing the fiber cable to be broken and the sealing performance is not good, so that the cable connector box is easy to inhale and enter the water, causing a large-scale communication interruption accident.
  • the flame-shrinking device should be used to heat the heat-shrinkable sleeve during installation. It must be heated uniformly around the heating cable. Because the cable-fixed heat-shrinkable sleeve is made of polyethylene (PE) material, if the heating is not uniform, Can cause poor shrinkage, affecting the sealing performance of the joint box. After heating for a while, it must be cooled for a while, otherwise the heat shrinkable sleeve will be burnt through, which will not achieve a good sealing effect, resulting in the inlet and inlet of the cable joint box, thus affecting the communication quality of the optical fiber network. If it is improperly protected during heating, it will also burn the base of the cable joint box, shorten the service life of the cable joint box, and fail to reach the national standard of the joint box with a service life of 25 years.
  • PE polyethylene
  • the mechanical properties of the heat-shrinkable sleeve made of polyethylene (PE) material tend to decrease with increasing temperature. Therefore, after repeated barbecues, the mechanical properties of the product will be reduced, and the long-term installation on the ground with large temperature difference will be installed.
  • PE polyethylene
  • the use of or in the underground wells with poor natural environment and long-term water will gradually become brittle and crack, which will accelerate the aging of the product, shorten the service life of the cable joint box, and cause the heat shrinkable sleeve to fall off in serious cases.
  • the occurrence of large-scale communication interruption accidents has caused great economic losses to operators and users.
  • the cable joint box with heat-shrinkable seal must be removed from the original cable joint box when rebuilding, re-install a new cable joint box, and re-seal the heat-shrinkable sleeve with fiber optic cable to seal the incoming and outgoing parts of the cable. This not only increases the cost of fiber optic cable network expansion, but also increases construction time and slows construction progress. 5.
  • the cable shrinkage sleeve made of polyethylene (PE) material is soft in texture and exposed to the outside, and termites are easy to bite it. Therefore, it does not have the function of termite prevention, which will leave hidden troubles for the fiber optic cable network. , always threaten the smooth communication.
  • the joint box adopts the winding sealing tape to install the optical cable.
  • the sealing tape is wound on the optical cable to appropriately increase the diameter of the optical cable to seal the function.
  • the operation is cumbersome, the installation is inconvenient, and it cannot be reused, which increases the network construction cost.
  • the sealing tape is easily deformed and contracted by the influence of temperature, and it is easy to loosen when used for a long time, so that a gap is formed between the optical cable and the box body, the joint box will be inhaled and infused, and the sealing performance is unreliable, thereby affecting the optical fiber network of the optical cable. Communication quality and service life.
  • the sealing tape is easy to expose, and its texture is soft and easy to be bitten by termites. If anti-anticide is used to prevent termites, the efficacy cannot be guaranteed for 25 years, and the long-term safe operation of the fiber optic cable network cannot be ensured. Summary of the invention
  • the object of the present invention is to provide a joint box sealing device for automatically holding a cable by using a nut to rotate the sealing ring to solve the problems existing in the existing cable sealing technology, resulting in shortened service life of the joint box, inconvenient construction expansion, and sealing performance. Poor, can not prevent termites and other issues.
  • the present invention adopts the following technical solutions: including a cable access pipe, a nut, a plastic gasket and an elastomer sealing ring, wherein: the cable entry and exit pipe is on the bottom of the cable connector box, and the cable enters and exits the tube.
  • the outer side and the matching nut are threaded inside, just need to thread the cable into the cable hole of the nut, the plastic washer and the elastomer sealing ring (the inner diameter of the cable hole of the plastic washer matches the outer diameter of the cable), and then Tighten the nut to tighten the inlet and outlet cables for easy installation and operation.
  • the cable inlet and outlet pipe nozzle, the plastic gasket and the elastomer sealing ring have corresponding taper. Under the pressure of the screw nut, the inner diameter of the elastomer sealing ring is automatically contracted to a size sufficient to hold the cable. Long-term and reliable sealing, no need to use sealing tape to achieve excellent sealing effect, simplify the installation process, save construction time and cost.
  • the material of the elastomer sealing ring is preferably TPE, and can be used for a long time in the natural ambient temperature range of -40 ° C to + 7 (TC). It is installed in the cable inlet and outlet tube, and is blocked by a plastic gasket, and is not exposed. Love Under the circumstance, the external environment is not affected too much, and the long-term sealing performance of the cable connector box can be ensured, so that the service life of the cable connector box is longer.
  • the bottom of the box, the cable entry and exit tube, the nut and the plastic washer are all made of high strength and high toughness engineering plastics, preferably PC or PA, and can be used at -40 ° C to +70 ° C.
  • high strength and high toughness engineering plastics preferably PC or PA
  • the long-term use of the left and right natural temperature range, firm texture, excellent mechanical properties, tensile strength and impact strength are significantly better than ordinary plastics, and have higher bending fatigue strength, the hardness exceeds the range of termites can be eroded .
  • the cable entry and exit pipe, the nut and the plastic gasket of the invention can protect the elastic sealing ring installed in the cable inlet and outlet pipe together, and the termite absolutely does not bite the elastomer sealing ring, so the sealing method has the function of preventing termites. Easy installation and long-term sealed reliability ensure long-term safe operation of fiber optic cable networks.
  • the invention may further be provided with a movable plastic outer casing fixed to the bottom of the box by screws, wherein two optical cable inlet and outlet pipes are disposed on the movable plastic outer casing; two optical cable inlet and outlet pipes are provided with an opening communication, and further provided with a sealing member
  • the sealing member and the movable plastic outer casing are pressed on the two optical cable inlet and outlet pipes, and the plastic outer casing is provided with threads; the optical cable inlet and outlet pipes are disposed at two ends of the bottom of the casing, and the nut, the plastic gasket and the elastic body are sealed.
  • the loops are also correspondingly disposed at both ends of the bottom of the box.
  • FIG. 1 is a schematic perspective view of an embodiment of the present invention
  • FIG. 2 is a schematic perspective view of another embodiment of the present invention.
  • Figure 3 is an axial cross-sectional view of the single-hole elastomer sealing ring of the present invention.
  • Figure 4 is a plan view of Figure 3;
  • Figure 5 is an axial cross-sectional view of the two-hole elastomer sealing ring of the present invention.
  • Figure 6 is a plan view of Figure 5;
  • Figure 7 is an axial cross-sectional view of a single-hole plastic gasket of the present invention.
  • Figure 8 is a plan view of Figure 7;
  • Figure 9 is a front view showing the structure of the double-hole plastic gasket of the present invention.
  • Figure 10 is a cross-sectional view taken along line D-D of Figure 9;
  • Figure 11 is an axial half cross-sectional view of the nut of the present invention.
  • Figure 12 is a plan view of Figure 11;
  • Figure 13 is an external end view of the bottom of the box with four equal-diameter cable access pipes of the present invention.
  • Figure 14 is a cross-sectional view taken along line AA of Figure 13;
  • Figure 15 is a rear elevational view of Figure 13;
  • Figure 16 is an external end view of the bottom of the case with a large diameter and three small diameter cable access pipes;
  • Figure 17 is a cross-sectional view taken along line B-B of Figure 16;
  • Figure 18 is a rear elevational view of Figure 16;
  • Figure 19 is a front end view of the bottom of the case with two large diameter and two small diameter cable access pipes;
  • Figure 20 is a cross-sectional view taken along line C-C of Figure 19;
  • Figure 21 is a rear elevational view of Figure 19;
  • Figure 22 is a plan view showing the outer end of the oblong frame of the present invention having a plurality of fixed cable access pipes;
  • Figure 23 is a plan view of Figure 22;
  • Figure 24 is a perspective view of the outer end of the box base of the oblong, partially removable optical cable entry and exit tube of the present invention;
  • Figures 24A and 24B are enlarged schematic views of the movable plastic outer casing of Figure 24;
  • Figure 25 is a plan view of Figure 24;
  • Figure 26 is a schematic exploded view of the present invention before assembly
  • Figure 27 is a schematic view showing the structure of each component of Figure 26 after assembly
  • Figure 28 is a schematic view showing the structure of the (two) cable entry and exit pipes at one end of the rectangular cross-section box body;
  • Figure 29 is a right side view of Figure 28;
  • Figure 30 is a schematic view showing the structure of the (three) cable entry and exit pipes at one end of the rectangular cross-section box body;
  • Figure 31 is a right side view of Figure 30;
  • Figure 32 is a schematic view showing the structure of a plurality of equal-diameter optical cable inlet and outlet tubes respectively disposed at two ends of a rectangular cross-section box body;
  • Figure 33 is a right side view of Figure 32;
  • FIG. 3 is a schematic structural view showing a plurality of unequal-diameter optical cable inlet and outlet pipes respectively disposed at two ends of a rectangular cross-section box body;
  • Figure 35 is a right side view of Figure 34;
  • Figure 36 is a schematic view showing the structure of an end face according to another embodiment of the present invention.
  • Figure 37 is a plan view of Figure 36.
  • the basic structure of the present invention comprises a casing 1, a bottom 2, a cable inlet and outlet pipe 3, a nut 7, a plastic gasket 6 and an elastomer sealing ring 5, and the cable inlet and outlet pipe 3 is disposed on the optical cable.
  • the outer side of the nozzle of the cable entry and exit tube 3 is provided with an external thread 4
  • the nut 7 is provided with an internal thread which cooperates with the external thread 4, and the plastic washer 6 and the elastic sealing ring 5 respectively
  • the optical cable holes 61 and 51 are provided.
  • the optical cable 8 is sequentially passed through the nut 7, the cable hole 61 of the plastic washer 6, and the cable hole 51 of the elastomer sealing ring 5, and then the nut 7 is screwed in and out of the cable.
  • the plastic gasket 6 and the elastomer sealing ring 5 are located between the cable inlet and outlet tube 3 and the nut 7, and are also fixed at the same time, so that the incoming and outgoing cables can be tightly sealed and installed.
  • the positions of the cable holes 61 of the plastic gasket 6 and the cable holes 51 of the elastomer sealing ring 5 correspond to each other, and the hole diameter of the cable hole 61 of the plastic gasket 6 matches the outer diameter of the cable, for example, equal to or slightly larger than the outer diameter of the cable, so that The optical cable can freely pass through the plastic gasket 6; and the aperture of the cable hole 51 of the elastomer sealing ring 5 does not necessarily need to be matched with the outer diameter of the cable, and the sealing property is deformed by the nut 7 against the elastic sealing ring 5. To achieve this, this will be described in detail later.
  • Each cable entry and exit tube 3 can pass through a fiber optic cable S (shown in Figure 1), or two fiber optic cables 8 (shown in Figure 2), or two or more fiber optic cables (not shown).
  • Cable holes 51 and 61 corresponding to the number of passing cables are provided on the elastomer sealing ring 5 and the plastic gasket 6 (see Figs. 3 to 10), wherein the cable holes 61 of the plastic gasket 6 shown in Figs. 7 and 8 are provided. It is a through hole, and the two cable holes 61 of the plastic gasket 6 shown in FIG. 9 and FIG. 10 have two cylindrical shapes when the optical cable is not installed, and can seal the cable inlet and outlet pipe 3 without the optical cable installed. Similar to plugging. When installing the fiber optic cable, you only need to remove the column shape to form the cable hole 61. (You can remove only one column for single cable installation, or you can remove two columns for two cable installations at the same time).
  • the cable entry and exit pipe 3 may be disposed at one end of the casing 1 (as shown in FIG. 1, FIG. 2, FIG. 28 to FIG. 31, FIG. 36, FIG. 37), and the cable entry and exit pipe 3 may be disposed at both ends of the casing 1 ( As shown in Fig. 32 to Fig. 35, at this time, the fastening effect is better.
  • the shape of the bottom 2 of the box may be a shape matching the box body, such as a circular shape (as shown in FIG. 1, FIG. 2, FIG. 13 to FIG. 21, FIG. 36), and an oblong shape (as shown in FIG. 22).
  • Figure 25 rectangular (as shown in Figure 28 ⁇ Figure 35), or other shapes.
  • a plurality of cable inlet and outlet pipes 3 of the same diameter or different diameters may be disposed on each of the bottoms 2. Further, a sealing collar 21 may be provided on the annulus of the bottom 2 of the case, as shown in Figs. 17, 18, 20, and 21.
  • two cable entry and exit pipes 3 are provided on a separate movable plastic casing 9 and fixed by screws 11 and corresponding holes reserved in the bottom 2 of the casing. .
  • the structure is designed for installing straight through without cutting the optical fiber, and the two optical cable inlet and outlet tubes 3 may be provided with an opening 10 for communication, which is Their joints are sealed.
  • the cable entry and exit tube is still taper, but the thread is designed on the plastic jacket 9.
  • Plastic gaskets, elastomeric seals and nuts are still used to seal the cable.
  • Corresponding taper is provided on the nozzle of the cable inlet and outlet pipe 3 and the elastomer sealing ring 5 (as shown in FIG. 26 and FIG. 27).
  • the internal thread of the nut 7 and the optical cable are made.
  • the taper of the cable inlet and outlet pipe 3 and the taper of the elastomer sealing ring 5 cooperate with each other, and the joint is sealed at the same time under the pressure of the screw nut 7
  • the inner diameter of the elastomer sealing ring 5 will automatically shrink to a size sufficient to hold the cable 8 for long-term reliable sealing. It is no longer necessary to use sealing tape to achieve an excellent sealing effect, which simplifies the installation process and saves Construction time and cost.
  • the elastomer sealing ring 5 is made of an elastomer plastic material, and adopts TPE (thermoplastic elastomer), which can be used for a long time in a natural ambient temperature range of about -40T to +70 Torr, and is installed in the cable inlet and outlet pipe 3.
  • TPE thermoplastic elastomer
  • the external plastic gasket 6 is blocked and is not exposed. Under normal circumstances, it will not be affected by the external environment too much, and the long-term sealing performance of the cable connector box can be ensured, so that the service life of the cable connector box is longer.
  • the casing 1, the bottom 2, the cable inlet and outlet pipe 3, the nut 7 and the plastic gasket 6 and other outer casing parts of the joint box are made of high strength and high toughness engineering plastics, according to the product use environment.
  • the materials used are divided into two categories. PC (polycarbonate) is used on the ground and PA (nylon) is used underground.
  • the material can be used for a long time in the natural temperature range of -40 ⁇ +70 ⁇ . Tough texture, excellent mechanical properties, tensile strength and impact strength are significantly better than ordinary plastics, and have high bending fatigue strength, and its hardness exceeds the range of termites.
  • the cable entry and exit pipe 3, the nut 7 and the plastic washer 6 of the present invention can together protect the elastomer sealing ring 5 installed in the cable inlet and outlet pipe, and the termites absolutely cannot bite the elastomer sealing ring 5, so the sealing method has
  • the termite-proof function is easy to install and reliable in long-term sealing, ensuring long-term safe operation of the fiber optic cable network.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

L'invention concerne un dispositif de scellement pour un boîtier d'épissure conçu pour serrer automatiquement et étroitement un câble optique par vissage et compression d'un écrou sur un anneau de scellement. Ce dispositif comprend un fond (2) de boîtier d'épissure de câble optique, un tube d'insertion de câble (3) disposé sur le fond de boîtier (2), un écrou (7), une rondelle plastique (6) et un anneau de scellement élastique (5). Des filets pouvant venir en contact les uns avec les autres sont formés respectivement sur l'extérieur du tube d'insertion de câble (3) et sur l'intérieur de l'écrou (7). Le câble optique traverse les ouvertures correspondantes de l'écrou (7), de la rondelle plastique (6) et de l'anneau de scellement élastique (5) à leur tour, puis l'écrou (7) est vissé pour sceller hermétiquement le câble. Le tube d'insertion de câble (3) et l'écrou (7), avec la rondelle plastique (6), permettent de protéger l'anneau de scellement élastique (5) disposé dans le tube d'insertion de câble (3), de sorte que le réseau de fibres optiques puisse fonctionner en toute sécurité, sur une longue durée.
PCT/CN2007/001988 2007-03-22 2007-06-25 Dispositif de scellement pour boitier d'epissure de cable optique WO2008113224A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710086921.4 2007-03-22
CNA2007100869214A CN101271182A (zh) 2007-03-22 2007-03-22 采用螺帽旋转压紧密封圈自动抱紧光缆的接头盒密封装置

Publications (1)

Publication Number Publication Date
WO2008113224A1 true WO2008113224A1 (fr) 2008-09-25

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Application Number Title Priority Date Filing Date
PCT/CN2007/001988 WO2008113224A1 (fr) 2007-03-22 2007-06-25 Dispositif de scellement pour boitier d'epissure de cable optique

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CN (1) CN101271182A (fr)
WO (1) WO2008113224A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108458919A (zh) * 2018-02-09 2018-08-28 中国石油大学(华东) 一种密封连接接头、缆线压溃试验系统及连接方法
CN108802925A (zh) * 2016-04-14 2018-11-13 杭州富通通信技术股份有限公司 一种光缆
CN110673284A (zh) * 2019-10-23 2020-01-10 深圳市鑫昌龙新材料科技股份有限公司 一种油膏填充工艺

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CN104238057A (zh) * 2014-09-24 2014-12-24 昆山市大唐通讯设备有限公司 单端机械密封光缆接头盒
CN104765111A (zh) * 2014-11-17 2015-07-08 宁波余大通信技术有限公司 自密封光缆接头盒底座
BR112019006232B1 (pt) * 2016-09-30 2024-04-30 Huawei Technologies Co., Ltd Fechamento de emenda para instalar um cabo óptico e método de selagem para selar um cabo óptico
CN106918888B (zh) * 2017-05-02 2023-05-16 常州太平通讯科技有限公司 用于光缆接头盒的端口密封装置
CN106908927B (zh) * 2017-05-02 2023-05-16 常州太平通讯科技有限公司 易安装维护光缆接头盒
CN109143513A (zh) * 2018-11-15 2019-01-04 江苏八达电子有限公司 一种光缆接头盒
CN111487732B (zh) * 2020-04-15 2022-07-12 富通光纤光缆（深圳）有限公司 一种多功能高容量的光纤一体化托盘
CN111812792A (zh) * 2020-08-13 2020-10-23 国网湖北省电力有限公司咸宁供电公司 一种opgw光缆接续盒固定装置
CN113359256A (zh) * 2021-06-29 2021-09-07 国网河北省电力有限公司信息通信分公司 一种光缆进缆密封结构及可视化架空光缆接头盒
CN113917641B (zh) * 2021-12-14 2022-03-08 中国飞机强度研究所 一种飞机测试通讯系统安装方法

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Publication number Priority date Publication date Assignee Title
CN108802925A (zh) * 2016-04-14 2018-11-13 杭州富通通信技术股份有限公司 一种光缆
CN108828737A (zh) * 2016-04-14 2018-11-16 杭州富通通信技术股份有限公司 一种光缆
CN108828737B (zh) * 2016-04-14 2020-07-03 杭州富通通信技术股份有限公司 一种光缆
CN108802925B (zh) * 2016-04-14 2020-07-03 杭州富通通信技术股份有限公司 一种光缆
CN108458919A (zh) * 2018-02-09 2018-08-28 中国石油大学(华东) 一种密封连接接头、缆线压溃试验系统及连接方法
CN108458919B (zh) * 2018-02-09 2024-04-05 中国石油大学(华东) 一种密封连接接头、缆线压溃试验系统及连接方法
CN110673284A (zh) * 2019-10-23 2020-01-10 深圳市鑫昌龙新材料科技股份有限公司 一种油膏填充工艺

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