WO2022048558A1 - Micro-câble de soufflage d'air avec micro-cannelure hélicoïdale, et appareil de fabrication et son procédé de fabrication - Google Patents

Micro-câble de soufflage d'air avec micro-cannelure hélicoïdale, et appareil de fabrication et son procédé de fabrication Download PDF

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Publication number
WO2022048558A1
WO2022048558A1 PCT/CN2021/115883 CN2021115883W WO2022048558A1 WO 2022048558 A1 WO2022048558 A1 WO 2022048558A1 CN 2021115883 W CN2021115883 W CN 2021115883W WO 2022048558 A1 WO2022048558 A1 WO 2022048558A1
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WO
WIPO (PCT)
Prior art keywords
air
cable
micro
spiral
outer sheath
Prior art date
Application number
PCT/CN2021/115883
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English (en)
Chinese (zh)
Inventor
沈清华
金永良
高峰
沈洪芬
李晓剑
张水先
沈新荣
Original Assignee
江苏亨通光电股份有限公司
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Application filed by 江苏亨通光电股份有限公司 filed Critical 江苏亨通光电股份有限公司
Publication of WO2022048558A1 publication Critical patent/WO2022048558A1/fr

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    • 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
    • G02B6/4401—Optical cables
    • 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
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/443—Protective covering
    • 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
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/443—Protective covering
    • G02B6/4432—Protective covering with fibre reinforcements
    • 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
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/4438—Means specially adapted for strengthening or protecting the cables for facilitating insertion by fluid drag in ducts or capillaries
    • 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
    • G02B6/4479—Manufacturing methods of optical cables
    • G02B6/4485—Installing in protective tubing by fluid drag during manufacturing
    • 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
    • G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
    • G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
    • G02B6/52—Underground or underwater installation; Installation through tubing, conduits or ducts using fluid, e.g. air

Definitions

  • the present application relates to the technical field of communication optical cables, and in particular, to a spiral micro-grooved air-blown micro-cable, manufacturing equipment and manufacturing method.
  • the air-blown micro-cable Compared with the traditional optical cable, the air-blown micro-cable has the same number of cores, the consumption of cabling materials and processing costs are greatly reduced, the structure size is small, the weight is light, and the optical fiber density is high.
  • the air-blown micro-cable can be directly blown into the existing communication pipeline by means of high-pressure air blowing, which greatly increases the utilization rate of the pipeline, effectively saves the pipeline resources, and meets the construction needs of network expansion. Air-blown laying is convenient and fast, which can effectively shorten the construction period of the project.
  • air-blown micro-cables generally use high-density polyethylene materials as their outer sheaths.
  • high-pressure air blowing can be used to achieve a distance of 1000m to 2000m under theoretical design, due to the actual blowing process of air-blown micro-cables It will come into contact with the pipe wall, and high-density polyethylene has a relatively large friction coefficient, which makes the forward resistance of the air-blown micro-cable relatively large, which limits the air-blown distance of the optical cable.
  • the present invention provides a spiral micro-grooved air-blown micro-cable, manufacturing equipment and manufacturing method, so as to solve the deficiencies of the prior art.
  • the present invention provides the following technical solutions:
  • an embodiment of the present invention provides a helical micro-grooved air-blown micro-cable, comprising a cable core and an outer sheath covering the cable core, and the outer wall of the outer sheath is provided with air guides to increase air flow. Spiral groove for driving force.
  • spiral micro-grooved air-blown micro-cable there are several spiral grooves;
  • the helical groove is a V-shaped structure.
  • the width of the spiral groove is 1/20 of the circumference of the outer sheath
  • the depth of the spiral groove is 1/2 of the thickness of the outer sheath.
  • the cable core includes a central strength member, a cushion layer, several optical fiber tubes and a yarn binding layer;
  • the center reinforcement is located inside the yarn binding layer
  • the cushion layer is wrapped around the outer periphery of the central reinforcement
  • a plurality of the optical fiber tubes are evenly arranged in the circumferential direction around the outer periphery of the cushion layer, and are located inside the yarn binding layer;
  • the optical fiber tube includes a sleeve and a plurality of optical fibers wrapped in the sleeve.
  • the inside of the optical fiber tube is filled with a casing water blocking substance
  • the inside of the yarn binding layer is filled with a core water-blocking substance.
  • the central reinforcing member is a high-carbon steel wire.
  • an embodiment of the present invention provides an air-blown micro-cable manufacturing equipment for manufacturing the spiral micro-grooved air-blown micro-cable as described in the first aspect, including a cable core forming device and an outer sheath forming device;
  • the cable core forming device is used for forming the cable core
  • the outer sheath forming device is used for forming an outer sheath with spiral grooves on the outer surface of the cable core;
  • the outer sheath forming device includes an extruder head and an extrusion die
  • the extrusion mold is arranged inside the extrusion head, and includes a mold core and a mold sleeve, and a flow channel is arranged between the mold core and the mold sleeve;
  • the die sleeve has a tooth-shaped opening, and is connected with a motor through a gear transmission mechanism, and is driven by the motor to rotate at a uniform speed.
  • a number of the teeth are evenly distributed along the circumferential direction of the tooth-shaped opening.
  • an embodiment of the present invention provides a method for manufacturing an air-blown micro-cable, which is performed by the air-blown micro-cable manufacturing apparatus described in the second aspect above, and the method includes:
  • the cable core is formed by the cable core forming device
  • the outer sheath material is extruded on the outer surface of the cable core through the flow channel through the extruder head.
  • the die sleeve is driven by the motor to rotate at a constant speed, thereby forming a spiral on the outer surface of the cable core.
  • the embodiments of the present invention provide a spiral micro-grooved air-blown micro-cable, a manufacturing device and a manufacturing method.
  • a spiral groove on the outer wall of the outer sheath of the air-blown micro-cable, the original performance of the air-blown micro-cable can be guaranteed to remain unchanged.
  • the high-pressure airflow can evenly wrap the air-blown micro-cable during laying, so that the air-blown micro-cable is always kept in the center of the pipe, reducing the friction with the pipe wall during the transmission process, reducing the air-blowing resistance, and effectively improving the
  • the blowing distance of the air-blown micro-cable has high promotion and application value.
  • FIG. 1 is a schematic front view of the structure of a spiral micro-grooved air-blown micro-cable provided by an embodiment of the present invention
  • FIG. 2 is a schematic side view of the structure of a spiral micro-grooved air-blown micro-cable provided by an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a method for manufacturing an air-blown microcable according to an embodiment of the present invention.
  • a component when a component is considered to be “connected” to another component, it can be directly connected to the other component or there may be co-located components at the same time.
  • a component When a component is considered to be “set on” another component, it can be set directly on the other component or there may be a centered set of components at the same time.
  • an embodiment of the present invention provides a spiral micro-grooved air-blown micro-cable, which includes a cable core and an outer sheath 1 covering the cable core.
  • the outer wall of the outer sheath 1 is provided with a Spiral groove 2 for guiding the air to increase the driving force of the air.
  • the outer sheath 1 covering the outer surface of the cable core.
  • the outer surface of the outer sheath 1 is added with a spiral groove that spirals along the length of the cable core.
  • the cable core is designed with a conventional cable core structure, and no additional improvement is required.
  • the general structure and size of the air-blown micro-cable product does not change, which can ensure the versatility of the product and the laid traditional products.
  • the cable core includes a central strength member 3, a cushion layer 4, several optical fiber tubes and a yarn tying layer 5;
  • the central reinforcement 3 is located inside the yarn binding layer 5;
  • the cushion layer 4 is wrapped around the outer periphery of the central reinforcement 3;
  • a plurality of the optical fiber tubes are evenly arranged in the circumferential direction around the outer periphery of the cushion layer 4, and are located inside the yarn binding layer 5;
  • the optical fiber tube includes a sleeve 6 and a plurality of optical fibers 7 wrapped in the sleeve 6 .
  • the inside of the optical fiber tube is filled with a casing water-blocking substance 8, such as fiber paste; the inside of the yarn tying layer 5 is filled with a cable core water-blocking substance 9, such as cable paste.
  • a casing water-blocking substance 8 such as fiber paste
  • the inside of the yarn tying layer 5 is filled with a cable core water-blocking substance 9, such as cable paste.
  • the central reinforcement 3 is a high carbon steel wire.
  • the helical groove 2 has a V-shaped structure, but of course other shapes are also possible, as long as the air guide can be realized to increase the driving force of the air.
  • the width of the spiral groove 2 is 1/20 of the circumference of the outer sheath 1
  • the depth of the spiral groove 2 is 1/2 of the thickness of the outer sheath 1 .
  • the helical grooves 2 may be one or several, but preferably several; the several helical grooves 2 are evenly distributed along the circumferential direction of the outer sheath 1 , and when viewed from the front, the The outer sheath 1 is shaped like a gear.
  • the air-blown micro-cable When laying and blowing, the air-blown micro-cable is transported forward under the drive of high-pressure air flow, and the air is passed between the multi-density spiral grooves to ensure that during the air-blowing process, the high-pressure air flow can evenly wrap the air-blown micro-cable and make the air blown.
  • the blown micro-cable is always kept in the center of the pipe, which can reduce the friction with the pipe wall during the conveying process, and the air flow in the spiral groove is assisted to increase the air-pulling force, thereby effectively increasing the blowing distance of the air-blown micro-cable.
  • the embodiment of the present invention provides a spiral micro-groove type air-blown micro-cable.
  • a spiral groove By arranging a spiral groove on the outer wall of the outer sheath of the air-blown micro-cable, the original performance of the air-blown micro-cable can be kept unchanged.
  • the air blowing resistance increases the blowing distance of the air blowing micro-cable, which has high promotion and application value.
  • the embodiment of the present invention provides an air-blown micro-cable manufacturing equipment for manufacturing the spiral micro-grooved air-blown micro-cable as described in the first embodiment, including a cable core forming device and an outer sheath forming device;
  • the cable core forming device is used for forming the cable core
  • the outer sheath forming device is used for forming an outer sheath with spiral grooves on the outer surface of the cable core;
  • the outer sheath forming device includes an extruder head and an extrusion die
  • the extrusion mold is arranged inside the extrusion head, and includes a mold core and a mold sleeve, and a flow channel is arranged between the mold core and the mold sleeve;
  • the die sleeve has a tooth-shaped opening, and is connected with a motor through a gear transmission mechanism, and is driven by the motor to rotate at a uniform speed.
  • teeth there are several teeth on the tooth-shaped opening;
  • a number of the teeth are evenly distributed along the circumferential direction of the tooth-shaped opening.
  • the motor adopts a small motor with a power of less than 1000W.
  • the motor drives the die sleeve to rotate at a constant speed, and in cooperation with the tooth-shaped opening of the die sleeve, an outer sheath with a spiral groove can be formed on the outer surface of the cable core.
  • the cable core forming device is an essential part of the air-blown micro-cable manufacturing equipment, and its function is to form the cable core required by the outer sheath forming device.
  • the device has not been improved, in addition, the device has been implemented in the prior art, which belongs to the common knowledge of those skilled in the art, so this embodiment does not provide an in-depth description.
  • the outer sheath of the air-blown micro-cable is formed by improving the outer sheath forming device, specifically, the mold sleeve is improved and designed as a rotatable mold sleeve with a tooth-shaped opening.
  • the spiral groove is added on the outer wall, which can ensure that the original performance of the air-blown micro-cable remains unchanged, so that the high-pressure airflow can evenly wrap the air-blown micro-cable during laying, so that the air-blown micro-cable is always kept in the center of the pipe, reducing the need for air-blown micro-cables.
  • the friction of the pipe wall during the transmission process reduces the air blowing resistance, which effectively increases the blowing distance of the air-blown micro-cable, and has high popularization and application value.
  • An embodiment of the present invention provides an air-blown micro-cable manufacturing method, which is performed by the air-blown micro-cable manufacturing equipment described in the second embodiment, and the method includes the following steps:
  • the cable core includes a central strength member, a cushion layer, a yarn binding layer, a water-blocking material for the casing, a water-blocking material for the cable core, a plurality of casings, and a plurality of optical fibers wrapped in the casing.
  • Step S301 involves various processes of cable core forming, such as:
  • the optical power of the UV curing lamp is accurately controlled by reasonably controlling the tension of the optical fiber take-up and pay-off, so that the indicators of the optical fiber after coloring meet the process and technical requirements;
  • the extrusion amount of the material is uniformly controlled, and a certain amount of casing water-blocking substances, such as fiber paste, are filled in the casing. excess length requirements;
  • the center reinforcement adopts conventional high carbon steel wire.
  • the inside of the mold core and the mold sleeve is provided with a channel running through from the front end to the rear end.
  • the sheath material will enter the flow channel between the mold core and the mold sleeve, and then extrude from the tooth-shaped opening of the mold sleeve on the outer surface of the cable core.
  • the mold sleeve rotates evenly;
  • the cooling water tank is cooled, and then the wire is taken up by the wire take-up machine under the traction of the tractor.
  • An embodiment of the present invention provides a method for manufacturing an air-blown micro-cable.
  • the outer surface of the cable core can form an outer sheath with a spiral groove.
  • Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those skilled in the art. Numerous details are set forth, such as examples of specific components, devices, and methods, in order to provide a thorough understanding of the embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms, and neither should be construed to limit the scope of the disclosure. In some example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.
  • the term "and/or” includes any and all combinations of one or more of the associated listed items.
  • first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections are not limited by these terms limit. These terms may only be used to distinguish one element, component, region or section from another element, component, region or section.
  • the use of terms such as the terms “first,” “second,” and other numerical terms herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
  • Spatially relative terms such as “inside”, “outside”, “below”, “below”, “lower”, “above”, “upper”, etc., may be used herein for ease of description , to describe the relationship between one element or feature and one or more other elements or features as shown in the figures.
  • Spatially relative terms may be meant to encompass different orientations of the device than the orientation depicted in this figure. For example, if the device in this figure is turned over, elements described as “below” or “beneath” other elements or features would then be oriented “above” the other elements or features.
  • the example term “under” can encompass both an orientation of upward and downward.
  • the device may be otherwise oriented (rotated 90 degrees or otherwise) and interpreted in relative terms of space herein.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

L'invention concerne un micro-câble de soufflage d'air avec une micro-cannelure hélicoïdale, et un appareil de fabrication et son procédé de fabrication. Le micro-câble de soufflage d'air comprend une âme de câble et une couche de protection externe (1) enroulée autour de l'âme de câble, la paroi externe de la couche de protection externe (1) étant pourvue d'une cannelure hélicoïdale (2) pour guider l'air pour augmenter une force d'entraînement de transfert d'air. De cette manière, à condition que la performance d'origine du micro-câble de soufflage d'air n'est pas modifiée, le micro-câble de soufflage d'air peut être enveloppé de manière uniforme par un flux d'air à haute pression pendant la pose, de telle sorte que le micro-câble de soufflage d'air est toujours maintenu au centre d'un tuyau, le frottement entre le micro-câble de soufflage d'air et une paroi de tuyau dans un processus de transfert est réduit, et la résistance au soufflage d'air est réduite, ce qui permet d'augmenter efficacement la distance de soufflage du micro-câble de soufflage d'air.
PCT/CN2021/115883 2020-09-04 2021-09-01 Micro-câble de soufflage d'air avec micro-cannelure hélicoïdale, et appareil de fabrication et son procédé de fabrication WO2022048558A1 (fr)

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CN202010921417.7 2020-09-04
CN202010921417.7A CN111965776A (zh) 2020-09-04 2020-09-04 一种螺旋微槽型气吹微缆、制造设备及制造方法

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115877525A (zh) * 2022-12-20 2023-03-31 长飞光纤光缆股份有限公司 一种气吹光纤束光缆制备装置
CN116009161A (zh) * 2022-12-20 2023-04-25 长飞光纤光缆股份有限公司 一种气吹光纤束光缆及其制备方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111965776A (zh) * 2020-09-04 2020-11-20 江苏亨通光电股份有限公司 一种螺旋微槽型气吹微缆、制造设备及制造方法
CN113900205B (zh) * 2021-10-26 2022-11-18 长飞光纤光缆股份有限公司 一种表面具有螺旋沟槽的水敷设光缆

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GB2156539A (en) * 1984-03-29 1985-10-09 Bicc Plc Manufacture of optical guide assembly
CN1241281A (zh) * 1997-09-29 2000-01-12 古河电气工业株式会社 架空电线
WO2004066008A1 (fr) * 2003-01-24 2004-08-05 Lg Cable Ltd. Unite a fibre optique pour installation de soufflage d'air, procede et appareil pour sa fabrication
CN102183830A (zh) * 2010-05-31 2011-09-14 四川汇源光通信有限公司 表面具有凹凸纹槽的绞合式微型气吹光缆及制造方法
CN104516075A (zh) * 2014-12-23 2015-04-15 成都亨通光通信有限公司 一种具有低摩擦系数的新型全干式气吹微缆
CN207601394U (zh) * 2017-12-21 2018-07-10 江苏中天科技股份有限公司 一种超柔耐弯气吹微型光缆
CN111965776A (zh) * 2020-09-04 2020-11-20 江苏亨通光电股份有限公司 一种螺旋微槽型气吹微缆、制造设备及制造方法

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Publication number Priority date Publication date Assignee Title
GB2156539A (en) * 1984-03-29 1985-10-09 Bicc Plc Manufacture of optical guide assembly
CN1241281A (zh) * 1997-09-29 2000-01-12 古河电气工业株式会社 架空电线
WO2004066008A1 (fr) * 2003-01-24 2004-08-05 Lg Cable Ltd. Unite a fibre optique pour installation de soufflage d'air, procede et appareil pour sa fabrication
CN102183830A (zh) * 2010-05-31 2011-09-14 四川汇源光通信有限公司 表面具有凹凸纹槽的绞合式微型气吹光缆及制造方法
CN104516075A (zh) * 2014-12-23 2015-04-15 成都亨通光通信有限公司 一种具有低摩擦系数的新型全干式气吹微缆
CN207601394U (zh) * 2017-12-21 2018-07-10 江苏中天科技股份有限公司 一种超柔耐弯气吹微型光缆
CN111965776A (zh) * 2020-09-04 2020-11-20 江苏亨通光电股份有限公司 一种螺旋微槽型气吹微缆、制造设备及制造方法

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Publication number Priority date Publication date Assignee Title
CN115877525A (zh) * 2022-12-20 2023-03-31 长飞光纤光缆股份有限公司 一种气吹光纤束光缆制备装置
CN116009161A (zh) * 2022-12-20 2023-04-25 长飞光纤光缆股份有限公司 一种气吹光纤束光缆及其制备方法

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