CN113777730B - Glue injection type optical cable joint box and glue injection method thereof - Google Patents
Glue injection type optical cable joint box and glue injection method thereof Download PDFInfo
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- CN113777730B CN113777730B CN202111125028.4A CN202111125028A CN113777730B CN 113777730 B CN113777730 B CN 113777730B CN 202111125028 A CN202111125028 A CN 202111125028A CN 113777730 B CN113777730 B CN 113777730B
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- optical cable
- box
- glue
- cable joint
- injection type
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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
- G02B6/4439—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
Abstract
The invention discloses an adhesive injection type optical cable joint box and an adhesive injection method thereof. This kind of injecting glue formula optical cable splice box is when pouring into the waterproof embedment resin of elasticity, gives vent to anger from the gas distribution support through what the fan lasts, can make the waterproof embedment resin of elasticity guarantee that its inside has abundant bubble at the in-process that solidifies, and the bubble can provide effectual cushioning effect after solidifying, can effectively reduce because of the waterproof embedment resin of elasticity that expend with heat and contract with cold and lead to drags the power to optic fibre to effectively prevent the link fracture of optic fibre.
Description
Technical Field
The invention belongs to the technical field of optical cable joint boxes, and particularly relates to a glue injection type optical cable joint box and a glue injection method thereof.
Background
The optical cable joint box is used for connecting two or more optical cables together and is provided with a splicing part of a protective component, is necessary to be adopted in the engineering construction of optical cable lines and is one of very important equipment, and the quality of the optical cable joint box directly influences the quality of the optical cable lines and the service life of the optical cable lines. Among the prior art, the optical cable splice box generally includes box body and lid, passes through the bolt fastening at box body and lid, is equipped with the sealing washer between box body and the lid in order to improve the leakproofness, prevents in outside water or the impurity entering box, and only still can lead to infiltration water or other impurity in box body and the lid because the error of processing equipment through setting up the sealing strip.
The existing optical cable joint box has poor anti-vibration capability, the optical fiber joint in the joint box is easy to loosen due to vibration generated outside, and the optical cable joint box along a railway or on the side of a bridge is easy to loosen due to vibration generated by vehicle running. Therefore, the applicant of the present invention has developed an injection type optical cable joint box, for example, CN210109420U discloses an injection type optical cable joint box, in which after the connection is completed, the box cover and the box body are covered, transparent or semitransparent elastic waterproof encapsulating resin is injected from the injection hole, and then the injection hole is sealed by the plug to improve the sealing property in the joint box, so as to prevent water or other impurities from leaking into the joint box, and the injected elastic waterproof encapsulating resin can reduce the vibration of internal components.
The glue injection type optical cable joint box finds that the deformation caused by expansion with heat and contraction with cold is large in the region with large seasonal temperature change due to temperature change, so that the injected elastic waterproof encapsulating resin has certain pulling force on the optical fiber after expansion with heat and contraction with cold, the connecting end of the optical fiber is easy to break, and the problem of the elastic waterproof encapsulating resin with more curing agent components is particularly obvious.
Disclosure of Invention
The invention provides the glue injection type optical cable joint box and the glue injection method thereof, aiming at the defects of the prior art, the glue injection type optical cable joint box and the glue injection method thereof can effectively reduce the pulling force of elastic waterproof encapsulating resin on optical fibers caused by thermal expansion and cold contraction, thereby effectively preventing the connecting ends of the optical fibers from being broken.
In order to solve the technical problem, the invention is solved by the following technical scheme: the utility model provides an injecting glue formula optical cable splice box, be equipped with a plurality of optical cable entries on the splice box, the splice box includes box body and lid, be provided with fiber connection dish in the splice box, the lid top is provided with the injecting glue hole, the box body bottom is provided with the gas distribution support, the air flue has in the gas distribution support, be provided with air inlet and a plurality of gas outlet on the gas distribution support, the air inlet has the fan through the pipe connection. This kind of injecting glue formula optical cable splice box is when pouring into the waterproof embedment resin of elasticity, gives vent to anger from the gas distribution support through what the fan lasts, can make the waterproof embedment resin of elasticity guarantee that its inside has abundant bubble at the in-process that solidifies, and the bubble can provide effectual cushioning effect after solidifying, can effectively reduce because of the waterproof embedment resin of elasticity that expend with heat and contract with cold and lead to drags the power to optic fibre to effectively prevent the link fracture of optic fibre.
In the above technical scheme, preferably, a heat conduction terminal for connecting a temperature detector is arranged on the optical cable connector box, and the heat conduction terminal penetrates into the connector box. The temperature of the elastic waterproof encapsulating resin in the joint box can be conveniently detected by adopting the temperature detector with the structure.
In the above technical solution, preferably, an electric heating tube is disposed at an outlet of the fan, and the electric heating tube is connected in series with a current regulator and a power supply. Adopt this structure can be through the air temperature of heating pipe heating insufflation to convenient adjust the waterproof embedment resin of elasticity to specific temperature.
In the above technical solution, preferably, the air inlet is detachably connected to the pipeline. By adopting the structure, the fan and the pipeline can be detached, and one fan and one pipeline can be matched with the installation of a plurality of glue injection type optical cable connector boxes.
In the above technical solution, preferably, a check valve is arranged on the pipeline, a pressure switch is arranged between the check valve and the air inlet, the pressure switch is connected in series with the fan and the power supply, and when the pressure in the pipeline is higher than a set value of the pressure switch, the pressure switch is turned off. Adopt this structure to make when waterproof embedment resin of elasticity solidifies or will solidify, pressure in the pipeline can show the increase, and when pressure was greater than pressure switch's setting value, pressure switch can the automatic disconnection to can the self-closing fan, prevent the waste and the fan damage of electric energy, and the waterproof embedment resin of inside elasticity of automatic indication when the fan is closed has solidified, makes things convenient for the installer to judge whether waterproof embedment resin of elasticity solidifies.
In the above technical scheme, preferably, the optical cable inlet is formed by splicing the box body and the box cover, and the box body and the box cover are spliced and connected through the fastening piece.
In the above technical scheme, preferably, the box body and the box cover are both provided with a sealing ring groove, and a sealing ring is arranged in the sealing ring groove.
In the above technical scheme, preferably, a connection column is arranged in the box body, a connection bracket is fixed on the connection column, the optical fiber connection disc is fixed in the middle of the connection bracket, and the gas distribution bracket is clamped between the connection bracket and the bottom surface of the box body. The structure is adopted to facilitate the fixed installation of the gas distribution bracket.
A glue injection method of a glue injection type optical cable joint box comprises the following steps: 1, connecting optical fibers in a plurality of optical cables, fixing the optical fibers in the optical cable connecting disc, and covering a box body and a box cover through fasteners when the optical cables respectively pass through a plurality of optical cable inlet positions; 2. starting a fan to continuously input air to the gas distribution bracket, and injecting elastic waterproof potting resin into the glue injection holes until the optical fiber connection disc is submerged; 3. and controlling the temperature of the elastic waterproof encapsulating resin in the optical cable joint box to be at a specific temperature until the elastic waterproof encapsulating resin is solidified, and then closing the fan.
Compared with the prior art, the invention has the following beneficial effects: when the glue injection type optical cable connector box and the glue injection method thereof are injected with elastic waterproof encapsulating resin, the air is continuously discharged from the gas distribution bracket through the fan, so that the elastic waterproof encapsulating resin can ensure that abundant bubbles are arranged in the elastic waterproof encapsulating resin in the solidification process, the bubbles can provide effective buffering action after solidification, the pulling force of the elastic waterproof encapsulating resin on the optical fiber caused by expansion with heat and contraction with cold can be effectively reduced, and the fracture of the connecting end of the optical fiber is effectively prevented.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
Fig. 2 is an exploded view of the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of glue injection mounting according to an embodiment of the present invention.
Fig. 4 is a partially enlarged view of fig. 3.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings: referring to fig. 1 to 4, a glue injection type optical cable joint box is provided with four optical cable inlets 1 aligned two by two on the joint box, of course, in other embodiments, more or fewer optical cable inlets 1 may be provided on the joint box, the joint box includes a box body 2 and a box cover 3, an optical fiber connection disc 10 is provided in the joint box, a glue injection hole 31 is provided at the top of the box cover 3, a gas distribution support 4 is provided at the bottom of the box body 2, an air passage is provided in the gas distribution support 4, a gas inlet 41 and a plurality of gas outlets 42 are provided on the gas distribution support 4, and the gas inlet 41 is connected with a fan 5 through a pipeline 51. This kind of injecting glue formula optical cable splice box is when pouring into the waterproof embedment resin of elasticity, give vent to anger from gas distribution support 4 through 5 continuance of fan, can make the waterproof embedment resin of elasticity guarantee its inside abundant bubble that has at the in-process that solidifies, the bubble can provide effectual cushioning effect after solidifying, can effectively reduce the power of dragging to optic fibre because of the waterproof embedment resin of elasticity that expend with heat and contract with cold and lead to, thereby effectively prevent the link fracture of optic fibre, under this kind of condition, even the waterproof embedment resin of elasticity self fracture also is difficult directly to break the link of optic fibre.
Be provided with the heat conduction terminal 7 that is used for connecting the temperature detector on the optical cable joint box, during heat conduction terminal 7 penetrated the joint box, in this embodiment, heat conduction terminal 7 set up on lid 3 and passed lid 3, and after waterproof encapsulating resin of elasticity was injected, heat conduction terminal 7 was located the inside one end of optical cable joint box and can be crossed by waterproof encapsulating resin of elasticity. The temperature of the elastic waterproof encapsulating resin during solidification is preferably the environmental temperature of the optical cable joint box during working, if the working temperature of the optical cable joint box is 0-60 ℃, the temperature of the elastic waterproof encapsulating resin during solidification is preferably about 30 ℃, so that the thermal expansion and cold contraction deformation of the elastic waterproof encapsulating resin is smaller when the working temperature changes, and the temperature of the elastic waterproof encapsulating resin in the joint box can be conveniently detected by the temperature detector through the structure, thereby controlling the temperature of the elastic waterproof encapsulating resin during solidification more conveniently.
In this embodiment, an electric heating tube 52 is disposed at the outlet of the fan 5, and a current regulator 53 and a power supply are connected in series to the electric heating tube 52. By adopting the structure, when the solidification temperature of the elastic waterproof encapsulating resin is too low, the electric heating pipe 52 can heat the heatable air, so that the temperature of the elastic waterproof encapsulating resin is increased, and the current is regulated by the current regulator 53 and is matched with the temperature detector to ensure that the elastic waterproof encapsulating resin is maintained at a specific temperature.
In this embodiment, the air inlet 41 is detachably connected to the duct 51. By adopting the structure, the fan 5 and the pipeline 51 can be detached, and one fan 5 and one pipeline 51 can be matched with the installation of a plurality of glue injection type optical cable joint boxes.
In this embodiment, the pipe 51 is provided with a check valve 54, the check valve 54 only flows in the direction of air inlet of the cable closure, a pressure switch 55 is provided between the check valve 54 and the air inlet 41, the pressure switch 55 is connected in series with the blower 5 and the power supply, and when the pressure in the pipe 51 is higher than the set value of the pressure switch 55, the pressure switch 55 is turned off. Adopt this structure to make when waterproof embedment resin of elasticity solidifies or will solidify, pressure in the pipeline 51 can show the increase, when pressure is greater than pressure switch 55's setting value, pressure switch 55 can the automatic disconnection to can self-closing fan 5, prevent the waste of electric energy and fan 5 from damaging, and the waterproof embedment resin of inside elasticity of automatic indication has solidified when fan 5 closes, make things convenient for the installer to judge whether waterproof embedment resin of elasticity solidifies.
In this embodiment, the optical cable inlet 1 is formed by splicing the box body 2 and the box cover 3, and the box body 2 and the box cover 3 are connected by splicing the fastening pieces. The fastener is a bolt and a nut.
In this embodiment, the case body 2 and the case cover 3 are both provided with a seal ring groove 100, and the seal ring 8 is provided in the seal ring groove 100. The structure is adopted to improve the sealing performance when the box body 2 and the box cover 3 are spliced.
In this embodiment, a connection column 21 is arranged in the box body 2, a connection bracket 9 is fixed on the connection column 21 through a screw, an optical fiber connection disc 10 is fixed in the middle of the connection bracket 9 through a screw, and the gas distribution bracket 4 is clamped between the connection bracket 9 and the bottom surface of the box body 2. With this structure, the gas distribution frame 4 can be easily fixed.
A glue injection method of a glue injection type optical cable joint box comprises the following steps: 1, connecting optical fibers in a plurality of optical cables, fixing the optical fibers in an optical fiber connecting disc, and covering a box body and a box cover through fasteners when the optical cables respectively pass through a plurality of optical cable inlet positions; the installation of the optical cable in this step is consistent with the installation in existing cable closure. 2. Starting a fan to continuously input air to the gas distribution bracket, injecting elastic waterproof potting resin into the glue injection hole until the optical fiber connecting disc is submerged, and mixing and stirring the glue A and the glue B uniformly before the elastic waterproof potting resin is injected; the blower must be started before the elastic waterproof potting resin is injected, otherwise the elastic waterproof potting resin is easy to enter the gas distribution bracket 4 from the gas outlet 42, and the uniformity of gas distribution in the gas distribution bracket 4 is affected. 3. Controlling the temperature of the elastic waterproof encapsulating resin in the optical cable joint box to be at a specific temperature until the elastic waterproof encapsulating resin is solidified, and then closing the fan; in this embodiment, the specific manner of temperature control of the elastic waterproof potting resin is as follows: after the elastic waterproof potting resin is injected, the temperature of the heat conduction terminal 7 is detected by a temperature detector, and when the temperature is lower than a specific temperature, the temperature of the introduced air is raised by starting the electric heating tube 52 and adjusting the current regulator 53, so that the elastic waterproof potting resin is kept at the specific temperature; when the temperature is higher than the specific temperature, the temperature can be reduced by spraying water outside the joint box or immersing a part of the joint box into the water; the specific temperature refers to a temperature set by one person, and particularly refers to a temperature around the middle value of the working environment temperature of the optical cable joint box; if the working temperature of the optical cable joint box is 0-60 ℃, the temperature of the elastic waterproof encapsulating resin is preferably about 30 ℃ when being solidified, so that the amount of thermal expansion and cold contraction deformation of the elastic waterproof encapsulating resin is smaller when the working temperature changes, and similarly, an installer can estimate the working temperature of the optical cable joint box according to experience and estimate the specific temperature so that the solidification temperature of the elastic waterproof encapsulating resin is kept at the specific temperature when the optical cable joint box is installed. After the elastic waterproof potting resin is solidified, the fan stops running, the pipeline is detached from the air inlet, and the air inlet and the glue injection port are plugged through the plug, so that the installation is completed.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a injecting glue formula optical cable splice box, be equipped with a plurality of optical cable entry (1) on the splice box, the splice box includes box body (2) and lid (3), be provided with fiber connection dish (10), its characterized in that in the splice box: lid (3) top is provided with glue injection hole (31), box body (2) bottom is provided with gas distribution support (4), the air flue has in gas distribution support (4), be provided with air inlet (41) and a plurality of gas outlet (42) on gas distribution support (4), air inlet (41) are connected with fan (5) through pipeline (51), be provided with check valve (54) on pipeline (51), check valve (54) with be provided with pressure switch (55) between air inlet (41), pressure switch (55) with fan (5) and power are established ties, work as pressure is higher than in pipeline (51) during the setting value of pressure switch (55), pressure switch (55) disconnection.
2. The glue-injection type optical cable joint box of claim 1, wherein: the optical cable connector box is provided with a heat conduction terminal (7) used for being connected with a temperature detector, and the heat conduction terminal (7) penetrates into the connector box.
3. The glue-injection type optical cable joint box of claim 2, wherein: an electric heating pipe (52) is arranged at the outlet of the fan (5), and a current regulator (53) and a power supply are connected in series to the electric heating pipe (52).
4. The glue-injection type optical cable joint box of claim 1, wherein: the air inlet (41) is detachably connected with the pipeline (51).
5. The glue-injection type optical cable joint box of claim 1, wherein: optical cable entry (1) by box body (2) and lid (3) amalgamation form, box body (2) with lid (3) are through fastener amalgamation connection.
6. The glue-injection type optical cable joint box of claim 1, wherein: the box body (2) and the box cover (3) are both provided with a sealing ring groove (100), and a sealing ring (8) is arranged in the sealing ring groove (100).
7. The glue-injection type optical cable joint box of claim 1, wherein: the optical fiber connecting box is characterized in that a connecting column (21) is arranged in the box body (2), a connecting support (9) is fixed on the connecting column (21), the optical fiber connecting disc (10) is fixed in the middle of the connecting support (9), and the gas distribution support (4) is clamped between the connecting support (9) and the bottom surface of the box body (2).
8. The method for injecting glue into a glue-injection type optical cable joint box according to claim 1, wherein the method comprises the following steps: 1, connecting optical fibers in a plurality of optical cables, fixing the optical fibers in the optical cable connecting disc, and covering a box body and a box cover through fasteners when the optical cables respectively pass through a plurality of optical cable inlet positions; 2. starting a fan to continuously input air to the gas distribution bracket, and injecting elastic waterproof potting resin into the glue injection holes until the optical fiber connection disc is submerged; 3. and controlling the temperature of the elastic waterproof potting resin in the optical cable splice closure at a specific temperature until the elastic waterproof potting resin is solidified, and then closing the fan.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111125028.4A CN113777730B (en) | 2021-09-25 | 2021-09-25 | Glue injection type optical cable joint box and glue injection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111125028.4A CN113777730B (en) | 2021-09-25 | 2021-09-25 | Glue injection type optical cable joint box and glue injection method thereof |
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| CN113777730A CN113777730A (en) | 2021-12-10 |
| CN113777730B true CN113777730B (en) | 2022-05-20 |
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| CN202111125028.4A Active CN113777730B (en) | 2021-09-25 | 2021-09-25 | Glue injection type optical cable joint box and glue injection method thereof |
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| CN117092770B (en) * | 2023-10-18 | 2023-12-22 | 江苏亨通海洋光网系统有限公司 | Bipolar submarine optical cable joint box |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07164510A (en) * | 1993-12-16 | 1995-06-27 | Sekisui Chem Co Ltd | Production of foam |
| US7077986B2 (en) * | 2000-09-29 | 2006-07-18 | Jsr Corporation | Method for formation of polymer |
| US8827372B2 (en) * | 2010-07-07 | 2014-09-09 | Frontis Corp. | Blowing system |
| CN209530567U (en) * | 2019-01-30 | 2019-10-25 | 三峡大学 | A kind of temperature-controllable air curtain generating device |
| CN210109420U (en) * | 2019-07-08 | 2020-02-21 | 浙江宏盛通信技术有限公司 | Glue injection type optical cable joint box |
| CN211377453U (en) * | 2019-11-30 | 2020-08-28 | 深圳真如电气技术有限公司 | Terminal box |
| CN110780406B (en) * | 2019-11-30 | 2020-08-04 | 四川天邑康和通信股份有限公司 | Optical cable joint box with strong pressure resistance |
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Denomination of invention: A glue injection type optical cable connector box and its glue injection method Effective date of registration: 20221020 Granted publication date: 20220520 Pledgee: Agricultural Bank of China Limited Shaoxing Shangyu sub branch Pledgor: ZHEJIANG HONGSHENG COMMUNICATION TECHNOLOGY Co.,Ltd. Registration number: Y2022330002721 |