CN113885151B - Sea Liu Jietou box for low-temperature environment and installation method - Google Patents
Sea Liu Jietou box for low-temperature environment and installation method Download PDFInfo
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- CN113885151B CN113885151B CN202111259328.1A CN202111259328A CN113885151B CN 113885151 B CN113885151 B CN 113885151B CN 202111259328 A CN202111259328 A CN 202111259328A CN 113885151 B CN113885151 B CN 113885151B
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- 238000009434 installation Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 145
- 238000007906 compression Methods 0.000 claims abstract description 107
- 230000006835 compression Effects 0.000 claims abstract description 105
- 230000003287 optical effect Effects 0.000 claims abstract description 65
- 239000013307 optical fiber Substances 0.000 claims abstract description 40
- 239000000835 fiber Substances 0.000 claims abstract description 29
- 239000002674 ointment Substances 0.000 claims abstract description 29
- 238000004873 anchoring Methods 0.000 claims description 25
- 230000001681 protective effect Effects 0.000 claims description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 238000004891 communication Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910052755 nonmetal Inorganic materials 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
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
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4441—Boxes
- G02B6/4446—Cable boxes, e.g. splicing boxes with two or more multi fibre 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
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Cable Accessories (AREA)
Abstract
The invention relates to a sea Liu Jietou box for a low-temperature environment and an installation method, and belongs to the field of optical cable communication. The sea-land connector box comprises a fiber coiling box, a compression-resistant cylinder and sealing end covers at two ends of the compression-resistant cylinder, wherein the fiber coiling box is positioned in the compression-resistant cylinder, and an optical cable is respectively connected into the fiber coiling box through the sealing end covers at two ends of the compression-resistant cylinder; sealing treatment is carried out between the sealing end cover and the compression-resistant barrel and between the sealing end cover and the optical cable, and low-temperature optical fiber filling ointment is filled in the compression-resistant barrel. The connector box is not limited to be laid in a manhole, the compressive strength is greatly enhanced, the problem that the use environment of the traditional sea Liu Jietou box is limited is solved, and the cable end and the internal structure are safer and more reliable.
Description
Technical Field
The invention relates to a sea Liu Jietou box for a low-temperature environment and an installation method, and belongs to the field of optical cable communication.
Background
The optical cable joint box is a connection protection device which provides optical, sealing and mechanical strength continuity for each optical cable when the optical cables with various structures are communicated and branched and connected in the laying modes of overhead, pipelines, direct burial and the like. As communications are increasingly important in life today, cable splice enclosures are increasingly being used. However, the existing optical cable splice box has the following defects:
1. the current commonly used sea Liu Jietou box cannot meet the requirement of being suitable for extremely low-temperature environment (60 ℃ below zero), and has limited use;
2. when the current common sea Liu Jietou box meets the basic function of complaints, a high-strength plastic shell is mostly used, and the box can only be attached to a manhole for use and cannot block external impact;
3. the cable end entry and exit locations of the currently available sea Liu Jietou boxes are unprotected and do not prevent excessive bending of the fiber.
Disclosure of Invention
The invention aims to overcome the structural defects of the traditional connector box, solve the problem that the sea Liu Jietou box is used in an extremely low-temperature environment, strengthen the tensile strength of an optical cable, reduce the integration difficulty and protect a port optical cable while guaranteeing the sealing performance of the sea Liu Jietou box.
The technical scheme adopted by the invention is as follows:
the invention provides a sea Liu Jietou box for a low-temperature environment, which comprises a fiber coiling box, a compression-resistant cylinder and sealing end covers at two ends of the compression-resistant cylinder, wherein the fiber coiling box is positioned in the compression-resistant cylinder, and an optical cable is respectively connected into the fiber coiling box through the sealing end covers at two ends of the compression-resistant cylinder; sealing treatment is carried out between the sealing end cover and the compression-resistant barrel and between the sealing end cover and the optical cable, and low-temperature optical fiber filling ointment is filled in the compression-resistant barrel.
By adopting the scheme, the compression-resistant cylinder is made of metal, partial external impact can be resisted, the protective sleeve is made of nonmetal, the optical cable sealing the inlet and the outlet of the end cover is protected to the greatest extent, and breakage caused by overlarge bending is prevented.
The sealing treatment and the filling of the low-temperature optical fiber filling ointment are combined, so that external water vapor can be isolated, and the influence of external mechanical forces such as vibration, impact and bending on the optical fiber connection part can be relieved, so that the whole sea Liu Jietou box meets the requirement of a low-temperature use environment.
Further, an optical cable fixing device is arranged on the inner side of the sealing end cover, and the optical cable fixing device comprises a cable end fixing piece, a cable end locking piece and two anchoring pieces; the cable end fixing piece, the cable end locking piece and the anchoring piece are all provided with arc grooves at the contact positions of the cable end fixing piece, the cable end locking piece and the anchoring piece with the optical cable.
The cable end fixing piece and the cable end locking piece are of a half-and-half opening-closing structure, the cable end fixing piece is fixed on the inner side face of the sealing end cover, and the cable end locking piece is connected with the cable end fixing piece through a screw to jointly clamp and fix the optical cable.
Similarly, the two anchoring parts are of a half-open-close structure, the two anchoring parts anchor the optical cable armor steel wire layer between the outer side surfaces of the cable end fixing part and the cable end locking part and the corresponding anchoring parts through screws respectively, so that the optical cable can be further clamped and fixed on one hand, and the peeled armor steel wire layer can be pressed and fixed on the other hand.
By adopting the scheme, the optical cable entering the connector box is extruded and fixed by the cable end fixing piece and the cable end locking piece, and the armor steel wire is extruded by the anchoring piece at the position of stripping the outer PE layer, so that the compressive strength of the optical cable is enhanced, and the tensile strength of 600N can be achieved;
further, the outer side surfaces of the two sealing end covers are respectively provided with a cable end protective sleeve, a through hole for an optical cable to pass through is formed in the cable end protective sleeve, the outer side surfaces of the sealing end covers are provided with extension parts, and the sealing end covers and the cable end protective sleeves are screwed into a whole through the extension parts and the through hole threads.
The sealing end cover is arranged at the inner end part of the compression-resistant cylinder, and a sealing ring is arranged between the sealing end cover and the inner wall of the compression-resistant cylinder; the outer side face of the sealing end cover is fixedly connected with a compression-resistant cylinder limiting ring, and the compression-resistant cylinder limiting ring is clamped and fixed between the compression-resistant cylinder end face and the compression-resistant cylinder protective sleeve end face.
By adopting the scheme, the sealing mainly depends on: after the sealing groove of the sealing end cover is sealed and the sealing ring is installed, the sealing ring is extruded by the compression-resistant cylinder to achieve the sealing effect; the installation position of the compression-resistant cylinder is dependent on: the compression-resistant cylinder limiting ring connected with the sealing end cover is tightly locked by utilizing the screw and the spring washer, and the compression-resistant cylinder limiting ring is clamped and fixed on the end face of the compression-resistant cylinder, so that the movement of the compression-resistant cylinder is limited.
Furthermore, the sealing end cover is provided with an oil plug, and the end surface of the pressure-resistant cylinder protective sleeve is provided with a limiting step surface matched with the oil plug.
After the optical fiber connection is finished, the installation of the external compression-resistant cylinder is finished, the low-temperature optical fiber filling ointment is poured by means of the oil filling opening of the sealing end cover surface, the oil plug is used for screwing after the injection is finished, the sealing of the oil filling opening is finished by means of the sealing ring of the oil plug, and the optical fiber filling ointment can be normally used at 60 ℃ under the zero environment temperature (according to different properties of the injected ointment, the applicable environment temperature is correspondingly different).
A second object of the present invention is to provide a method for installing a marine Liu Jietou cartridge for a low-temperature environment, comprising the steps of:
1) Stripping the outer PE layer of the cable end of the optical cable;
the cable is passed through the components to be used in sequence: the cable end protecting sleeve, the compression-resistant cylinder limiting ring, the sealing end cover and the compression-resistant cylinder;
the other side of the optical cable passes through the following sequence: a cable end protective sleeve, a compression-resistant barrel limiting ring and a sealing end cover;
2) PE-free copper pipe sections of the optical cable are fixed by cable end fixing pieces and cable end locking pieces:
the cable end fixing piece and the cable end locking piece are of a half-open-half structure, the cable end fixing piece is fixed on the inner side surface of the sealing end cover, and the cable end locking piece is connected with the cable end fixing piece through a screw to jointly clamp and fix the optical cable;
3) Fixing the armored steel wire by an anchor piece:
two anchoring pieces with a half-open-close structure are adopted, and the optical cable armoured steel wires are respectively anchored between the outer side surfaces of the cable end fixing piece and the cable end locking piece and the corresponding anchoring pieces through screws;
4) The optical fiber box is internally welded with optical fibers according to the number of the optical fiber cores, an optical fiber baffle is installed and fixed by using screws, the position of the optical fibers is limited, and then a cover plate of the optical fiber box is installed;
5) The fiber coiling box is positioned in the compression-resistant cylinder, a sealing ring is arranged on the side wall of the sealing end cover, the sealing end cover is arranged at the inner end part of the compression-resistant cylinder, and the sealing end covers at two sides are pushed by hands so that the sealing end covers at two sides are symmetrically arranged in the compression-resistant cylinder;
6) The compression-resistant cylinder limiting ring on one side is fixed with the corresponding sealing end cover by using a locking screw and a spring washer, and the position of the compression-resistant cylinder is adjusted, so that the compression-resistant cylinder limiting ring is attached to the end face of the compression-resistant cylinder; then the compression-resistant cylinder limiting rings on the other side are installed in the same installation mode, and the positions of the compression-resistant cylinders can be limited after the compression-resistant cylinder limiting rings are completed;
the optical cable and the sealing end cover are sealed by a heat-shrinkable sleeve;
7) Injecting low-temperature optical fiber filling ointment at the oil filling port of the sealing end cover, and then sealing by an oil plug; specific:
firstly, installing an oil plug at an oil filling port of a sealing end cover at any side, obliquely upwards injecting low-temperature optical fiber filling ointment into the sealing end cover without the oil plug, stopping injecting the low-temperature optical fiber filling ointment until the low-temperature optical fiber filling ointment reaches the oil filling port, and sealing the oil filling port by the oil plug; then the sealing end cover at the other end is inclined upwards, the oil plug is opened, the low-temperature optical fiber filling ointment is injected until the low-temperature optical fiber filling ointment reaches the oil filling port, and the sealing is performed by the oil plug;
8) After oiling is completed, the cable end protective sleeve is screwed into the external thread of the extension part of the sealing end cover to fix, so that the external optical cable is prevented from being excessively bent.
The innovation points of the invention are as follows:
1. injecting low-temperature optical fiber filling ointment by using an oil filling port of the sealing end cover, achieving the effect that the whole device can be normally used in a low-temperature environment, and sealing the oil filling port of the sealing end cover by using an oil plug;
2. the seal is integrally sealed by a sealing ring in a sealing groove of the sealing end cover and a compression sealing ring of the compression-resistant cylinder;
3. the compression-resistant cylinder limiting ring and the sealing end cover use end cover locking screws and spring washers, and the compression-resistant cylinder limiting ring is used for limiting the movement of the compression-resistant cylinder after compressing the end surface of the compression-resistant cylinder;
4. the cable armor steel wire layer is tightly pressed by the screw to press the anchoring piece, the steel wire layer presses the surface of the cable end fixing piece and the locking piece to fasten the steel wire layer, so that the tensile strength of the cable is increased;
5. in order to protect the sealing end cover and part of the optical cable entering the end cover, a cable end nonmetal protective sleeve is used for protection.
The invention can be connected with a cable with an armored steel wire, can isolate external water vapor and dust, resist external impact and protect partial cables entering the joint box, and can bear the environmental temperature below minus 60 ℃ as a whole (according to different properties of the injected ointment, the applicable environmental temperature is correspondingly different) by injecting low-temperature ointment into the oil injection port of the sealing end cover; the sealing mainly relies on the end cover sealing washer, and outer steel wire anchor increases holistic tensile strength, and holistic shock resistance is improved to outside resistance to compression section of thick bamboo, and the oil filler point of end cover face has guaranteed that low temperature oleamen can get into smoothly, and the cable entering end of end cover uses the mode of heat shrinkage bush to seal, and cable protection cover furthest has guaranteed the safety of cable.
The connector box is not limited to be laid in a manhole, the compressive strength is greatly enhanced, the problem that the use environment of the traditional sea Liu Jietou box is limited is solved, and the cable end and the internal structure are safer and more reliable.
Drawings
FIG. 1 is a schematic view of a split structure of a splice closure of the present invention;
FIG. 2 is a cross-sectional view of the splice closure of the present invention after installation;
FIG. 3 is a schematic view of the structure of the optical cable fixing device of the present invention;
FIG. 4 is a schematic view of the seal ring and seal end cap extrusion of the present invention;
FIG. 5 is a schematic view of the exterior of the splice closure of the present invention;
in the figure: 1-cable end protective sleeve, 2-compression-resistant barrel limiting ring, 3-sealing end cover, 4-compression-resistant barrel, 5-anchoring piece, 6-cable end fixing piece, 7-fiber box, 8-fiber box cover plate, 9-limiting ring locking screw, 10-limiting ring spring washer, 11-anchoring piece fixing screw, 12-oil plug, 13-fiber box cover plate fixing screw, 14-fiber baffle, 15-cable end locking piece, 16-cable end fixing piece fixing screw, 17-cable end locking piece locking screw, 18-sealing ring and extension part of 19-sealing end cover outer side.
Detailed Description
Example 1
As shown in fig. 1, 2 and 5, the sea Liu Jietou box for the low-temperature environment comprises a fiber coiling box 7, a compression-resistant cylinder 4 and sealing end covers 3 at two ends of the compression-resistant cylinder, wherein the fiber coiling box is positioned in the compression-resistant cylinder, and an optical cable is respectively connected into the fiber coiling box through the sealing end covers at two ends of the compression-resistant cylinder; sealing treatment is carried out between the sealing end cover and the compression-resistant barrel and between the sealing end cover and the optical cable, low-temperature optical fiber filling ointment is filled in the compression-resistant barrel, and an oil plug 12 is arranged at the sealing end cover.
The outer side surfaces of the two sealing end covers are respectively provided with a cable end protective sleeve 1, through holes for the optical cables to pass through are formed in the cable end protective sleeves, the outer side surfaces of the sealing end covers are provided with extension parts 19, and the sealing end covers and the cable end protective sleeves are screwed into a whole through the extension parts and the through holes. The contact surface of the extension part and the inner wall of the through hole is a step surface, so that the sealing degree between the extension part and the through hole can be improved, and the optical cable and the sealing end cover are sealed by adopting a heat-shrinkable sleeve.
The sealing end cover is arranged at the inner end part of the compression-resistant cylinder, and a sealing ring 18 (shown in figure 4) is arranged between the sealing end cover and the inner wall of the compression-resistant cylinder; the outer side surface of the sealing end cover is fixedly connected with a compression-resistant cylinder limiting ring 2, and the compression-resistant cylinder limiting ring is clamped and fixed between the compression-resistant cylinder end surface and the compression-resistant cylinder protective sleeve end surface.
In this embodiment, the sealing mainly depends on:
after the sealing groove of the sealing end cover is sealed and the sealing ring is installed, the sealing ring is extruded by the compression-resistant cylinder to achieve the sealing effect;
the installation position of the compression-resistant cylinder is dependent on:
the compression-resistant cylinder limiting ring connected with the sealing end cover is tightly locked by the screw 9 and the spring washer 10, and the compression-resistant cylinder limiting ring is clamped and fixed on the end face of the compression-resistant cylinder, so that the movement of the compression-resistant cylinder is limited.
The compression-resistant cylinder is made of metal, part of external impact can be resisted, the protective sleeve is made of nonmetal, the optical cable sealing the inlet and the outlet of the end cover is protected to the greatest extent, and breakage caused by overlarge bending is prevented.
Example 2
On the basis of the embodiment 1, as shown in fig. 3, an optical cable fixing device is arranged on the inner side of the sealing end cover, and comprises a cable end fixing piece 6, a cable end locking piece 15 and two anchoring pieces 5; the cable end fixing piece, the cable end locking piece and the anchoring piece are all provided with arc grooves at the contact positions of the cable end fixing piece, the cable end locking piece and the optical cable.
The cable end fixing piece and the cable end locking piece are of a half-and-half opening-closing structure, the cable end fixing piece is fixed on the inner side face of the sealing end cover through the fixing screw 16, and the cable end locking piece is connected with the cable end fixing piece through the locking screw 17 to jointly clamp and fix the optical cable.
Similarly, the two anchoring parts are of a half-open-close structure, the two anchoring parts respectively anchor the optical cable armor wire layers between the outer side surfaces of the cable end fixing piece and the cable end locking piece and the corresponding anchoring parts through the fixing screws 11, so that the optical cable can be further clamped and fixed on one hand, and the peeled armor wire layers can be pressed and fixed on the other hand.
By adopting the scheme, the optical cable entering the connector box is extruded and fixed by the cable end fixing piece and the cable end locking piece, and the anchor piece is used for extruding the armored steel wire at the position of stripping the outer PE layer, so that the compressive strength of the optical cable is enhanced, and the tensile strength of 600N can be achieved.
Example 3
As shown in fig. 1 and 2, the end face of the compression-resistant cylinder protective sleeve is provided with a groove matched with the locking screw of the limiting ring to form a limiting step surface matched with the oil plug, and after the compression-resistant cylinder is installed, the step surface can limit the oil plug, so that the sealing performance of the oil filling port is enhanced.
Example 4
On the basis of the embodiment 3, the installation method of the sea Liu Jietou box for the low-temperature environment comprises the following steps:
1) PE is stripped from the cable end, an outer PE layer is stripped, and few outer armor wires are reserved;
the cable is passed through the components to be used in sequence: the cable end protecting sleeve 1, the compression-resistant barrel limiting ring 2, the sealing end cover 3 and the compression-resistant barrel 4;
the other side of the optical cable passes through the following sequence: a cable end protective sleeve 1, a compression-resistant barrel limiting ring 2 and a sealing end cover 3;
2) Fixing the stripped section of the optical cable with a cable end fixing member and a cable end locking member:
the cable end fixing piece 6 and the cable end locking piece 15 are of a half-open-close structure, the cable end fixing piece is fixed on the inner side surface of the sealing end cover by adopting a fixing screw 16, and the cable end locking piece is connected with the cable end fixing piece through a locking screw 17 to jointly clamp and fix the optical cable;
3) Fixing the armoured steel wire layer by anchor piece:
two anchoring pieces 5 with a half-open-close structure are adopted, and an optical cable armor steel wire layer is anchored between the outer side surfaces of a cable end fixing piece and a cable end locking piece and the corresponding anchoring pieces through fixing screws 11 respectively to compress the steel wire layer;
4) The fiber coiling box 7 is internally welded with fiber coiling according to the fiber core number, a fiber baffle 14 is installed and fixed by using screws, the position of the fiber is limited, a fiber coiling box cover plate 8 is installed by using four fiber coiling box cover plate fixing screws 13, and the fiber coiling box cover plate 8 is also installed without coiling the fiber at the other side;
5) The fiber coiling box 7 is positioned in the compression-resistant cylinder 4, a sealing ring 18 is arranged at a sealing groove on the side wall of the sealing end cover, the sealing end cover is arranged at the inner end part of the compression-resistant cylinder, and the sealing end covers at two sides are pushed by hands so that the sealing end covers at two sides are symmetrically arranged in the compression-resistant cylinder;
6) The compression-resistant cylinder limiting ring on one side is fixed with the corresponding sealing end cover by using the locking screw 9 and the spring washer 10, and the position of the compression-resistant cylinder is adjusted, so that the compression-resistant cylinder limiting ring is attached to the end face of the compression-resistant cylinder; then the compression-resistant cylinder limiting rings on the other side are installed in the same installation mode, and the positions of the compression-resistant cylinders can be limited after the compression-resistant cylinder limiting rings are completed;
7) Injecting low-temperature optical fiber filling ointment at the oil filling port of the sealing end cover, and then sealing by an oil plug; the gap between the optical cable and the inlet of the sealing end cover is sealed by a heat-shrinkable sleeve; specific:
firstly, installing an oil plug 12 on an oil filling port of a sealing end cover at any side, obliquely upwards injecting low-temperature optical fiber filling ointment into the sealing end cover without the oil plug, stopping injecting until the low-temperature optical fiber filling ointment reaches the oil filling port, and sealing the oil filling port by the oil plug; then the sealing end cover at the other end is inclined upwards, the oil plug is opened, the low-temperature optical fiber filling ointment is injected until the low-temperature optical fiber filling ointment reaches the oil filling port, and the sealing is performed by the oil plug;
8) After oiling is completed, the cable end protective sleeve is screwed into the external thread of the extension part of the sealing end cover to fix, so that the external optical cable is prevented from being excessively bent.
The above case is only one installation process, and can be changed correspondingly according to different environments and use requirements, and a plurality of changes and improvements are all protected by the invention.
Claims (3)
1. The marine Liu Jietou box for the low-temperature environment is characterized by comprising a fiber coiling box, a compression-resistant cylinder and sealing end covers at two ends of the compression-resistant cylinder, wherein the fiber coiling box is positioned in the compression-resistant cylinder, and an optical cable is respectively connected into the fiber coiling box through the sealing end covers at two ends of the compression-resistant cylinder; sealing treatment is carried out between the sealing end cover and the compression-resistant barrel and between the sealing end cover and the optical cable, and low-temperature optical fiber filling ointment is filled in the compression-resistant barrel;
an optical cable fixing device is arranged on the inner side of the sealing end cover and comprises a cable end fixing piece and a cable end locking piece; the cable end fixing piece and the cable end locking piece are of a half-open-half structure, the cable end fixing piece is fixed on the inner side surface of the sealing end cover, and the cable end locking piece is connected with the cable end fixing piece through a screw to jointly clamp and fix the optical cable;
the optical cable fixing device further comprises two anchoring parts, wherein the two anchoring parts are used for anchoring the optical cable armor steel wire layer between the outer side surfaces of the cable end fixing piece and the cable end locking piece and the corresponding anchoring parts through screws respectively;
the outer side surfaces of the two sealing end covers are respectively provided with a cable end protective sleeve, a through hole for an optical cable to pass through is formed in the cable end protective sleeves, the outer side surfaces of the sealing end covers are provided with extension parts, and the sealing end covers and the cable end protective sleeves are screwed into a whole through the extension parts and the through holes;
the sealing end cover is arranged at the inner end part of the compression-resistant cylinder, and a sealing ring is arranged between the sealing end cover and the inner wall of the compression-resistant cylinder; the outer side surface of the sealing end cover is fixedly connected with a compression-resistant cylinder limiting ring, and the compression-resistant cylinder limiting ring is clamped and fixed between the compression-resistant cylinder end surface and the compression-resistant cylinder protective sleeve end surface; the sealing end cover is provided with an oil plug, and the end face of the pressure-resistant cylinder protective sleeve is provided with a limiting step surface matched with the oil plug.
2. The marine vessel Liu Jietou for a cryogenic environment according to claim 1, wherein the cable end fixing member, the cable end locking member, and the anchor are each provided with an arcuate groove at a contact point with the optical cable.
3. The installation method of the marine Liu Jietou cartridge for a low-temperature environment according to claim 1, comprising the steps of:
1) Stripping the outer PE layer from the cable end of the optical cable;
the cable is passed through the components to be used in sequence: the cable end protecting sleeve, the compression-resistant cylinder limiting ring, the sealing end cover and the compression-resistant cylinder;
the other side of the optical cable passes through the following sequence: a cable end protective sleeve, a compression-resistant barrel limiting ring and a sealing end cover;
2) Fixing the PE-free layer of the optical cable by using a cable end fixing piece and a cable end locking piece:
the cable end fixing piece and the cable end locking piece are of a half-open-half structure, the cable end fixing piece is fixed on the inner side surface of the sealing end cover, and the cable end locking piece is connected with the cable end fixing piece through a screw to jointly clamp and fix the optical cable;
3) Fixing the armoured steel wire layer by anchor piece:
two anchoring pieces with a half-open-close structure are adopted, and the optical cable armoured steel wires are respectively anchored between the outer side surfaces of the cable end fixing piece and the cable end locking piece and the corresponding anchoring pieces through screws;
4) The optical fiber box is internally welded with optical fibers according to the number of the optical fiber cores, an optical fiber baffle is installed and fixed by using screws, the position of the optical fibers is limited, and then a cover plate of the optical fiber box is installed;
5) The fiber coiling box is positioned in the compression-resistant cylinder, a sealing ring is arranged on the side wall of the sealing end cover, the sealing end cover is arranged at the inner end part of the compression-resistant cylinder, and the sealing end covers at two sides are pushed by hands so that the sealing end covers at two sides are symmetrically arranged in the compression-resistant cylinder;
6) The compression-resistant cylinder limiting ring on one side is fixed with the corresponding sealing end cover by using a locking screw and a spring washer, and the position of the compression-resistant cylinder is adjusted, so that the compression-resistant cylinder limiting ring is attached to the end face of the compression-resistant cylinder; then the compression-resistant cylinder limiting rings on the other side are installed in the same installation mode, and the positions of the compression-resistant cylinders can be limited after the compression-resistant cylinder limiting rings are completed; the optical cable and the sealing end cover are sealed by a heat-shrinkable sleeve;
7) Injecting low-temperature optical fiber filling ointment at the oil filling port of the sealing end cover, and then sealing by an oil plug, wherein the low-temperature optical fiber filling ointment is specifically:
firstly, installing an oil plug at an oil filling port of a sealing end cover at any side, obliquely upwards injecting low-temperature optical fiber filling ointment into the sealing end cover without the oil plug, stopping injecting the low-temperature optical fiber filling ointment until the low-temperature optical fiber filling ointment reaches the oil filling port, and sealing the oil filling port by the oil plug; then the sealing end cover at the other end is inclined upwards, the oil plug is opened, the low-temperature optical fiber filling ointment is injected until the low-temperature optical fiber filling ointment reaches the oil filling port, and the sealing is performed by the oil plug;
8) After oiling is completed, the cable end protective sleeve is screwed into the external thread of the extension part of the sealing end cover to fix, so that the external optical cable is prevented from being excessively bent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111259328.1A CN113885151B (en) | 2021-10-28 | 2021-10-28 | Sea Liu Jietou box for low-temperature environment and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111259328.1A CN113885151B (en) | 2021-10-28 | 2021-10-28 | Sea Liu Jietou box for low-temperature environment and installation method |
Publications (2)
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| CN115407469A (en) * | 2022-08-31 | 2022-11-29 | 中航宝胜海洋工程电缆有限公司 | Bipolar cable joint box |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183780A (en) * | 2007-10-15 | 2008-05-21 | 江苏中天科技股份有限公司 | Seabed fiber compound power cable connector box and connection technique thereof |
| CN105811350A (en) * | 2016-03-21 | 2016-07-27 | 中天科技海缆有限公司 | Underwater photoelectric separation connecting cavity and connecting method therefor |
| EP3062137A1 (en) * | 2015-02-24 | 2016-08-31 | Draka Comteq B.V. | Method of connecting an optical fiber cable to a closure box, and a connector and assembly therefore |
| CN105954847A (en) * | 2016-06-30 | 2016-09-21 | 江苏亨通海洋光网系统有限公司 | Sea and land cable joint box |
| CN112130267A (en) * | 2020-10-27 | 2020-12-25 | 上海亨通海洋装备有限公司 | Submarine optical cable connection box |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183780A (en) * | 2007-10-15 | 2008-05-21 | 江苏中天科技股份有限公司 | Seabed fiber compound power cable connector box and connection technique thereof |
| EP3062137A1 (en) * | 2015-02-24 | 2016-08-31 | Draka Comteq B.V. | Method of connecting an optical fiber cable to a closure box, and a connector and assembly therefore |
| CN105811350A (en) * | 2016-03-21 | 2016-07-27 | 中天科技海缆有限公司 | Underwater photoelectric separation connecting cavity and connecting method therefor |
| CN105954847A (en) * | 2016-06-30 | 2016-09-21 | 江苏亨通海洋光网系统有限公司 | Sea and land cable joint box |
| CN112130267A (en) * | 2020-10-27 | 2020-12-25 | 上海亨通海洋装备有限公司 | Submarine optical cable connection box |
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