Optical fiber cable splicing device and optical fiber cable splicing method

Abstract

The invention relates to the field of hollow-core optical fiber cable splicing, and provides an optical fiber cable splicing device and an optical fiber cable splicing method. The optical fiber cable splicing device comprises a box body, an optical fiber fusion splicer, a vacuum conversion device and an environment detection device, a containing cavity is formed in the box body, at least two threading holes communicated with the containing cavity are formed in the side wall of the box body, and optical fiber cables penetrate through the threading holes; the optical fiber fusion splicer is arranged in the accommodating cavity; at least part of the vacuum conversion device is arranged in the containing cavity, and the vacuum conversion device is suitable for vacuumizing the containing cavity; the environment detection device is arranged in the box body and electrically connected with the vacuum conversion device, and the environment detection device is used for detecting environment conditions in the containing cavity and outside the box body. The optical fiber cable splicing device provided by the invention can solve the optical fiber quality problem caused by air when the optical fiber cable is spliced, and improves the link quality of the optical fiber cable.

Description

Technical Field

[0001] The present application relates to the technical field of hollow-core optical fiber cable splicing, and in particular to an optical fiber cable splicing device and an optical fiber cable splicing method. Background Art

[0002] Hollow-core fiber (HCF) uses air as the transmission medium, replacing the traditional optical fiber that uses a "glass core" as the transmission medium. With its ultra-low latency, ultra-low nonlinearity, potential ultra-low loss, and wider passband bandwidth, hollow-core fiber can help OTN systems achieve greater transmission capacity, longer transmission distances, and smaller transmission latency.

[0003] There are many types of hollow-core optical fibers. At present, whether it is a fiber fusion splicer for solid-core optical fiber splicing or a fiber fusion splicer for hollow-core optical fiber splicing, whether it is indoors or outdoors, the surrounding environment is complex during splicing, and rain, dust and other impurities may appear. For example, there is no protective device during rainy day repairs, coal mines, and roadsides. When solid optical fibers are fused, the impact of external conditions is small because they are solid optical fibers, but the inside of hollow-core optical fibers is hollow and easily affected by the surrounding environment. For example, when it rains outdoors, the humidity is relatively high. Once the hollow-core optical fiber cap is opened or the hollow-core optical fiber is cut off, the moisture in the air will enter the hollow-core optical fiber, affecting the anti-resonance cavity inside the hollow-core optical fiber, and ultimately causing the attenuation index of the entire hollow-core optical fiber to be too large, affecting the transmission quality of the hollow-core optical fiber. In addition, due to the high splicing temperature, after splicing, the cooling process is likely to cause condensation of fog inside the hollow-core optical fiber, which will also damage the anti-resonance cavity inside the hollow-core optical fiber. In this way, optical fiber cables are easily affected by the external environment when splicing, resulting in optical fiber quality problems. Summary of the invention

[0004] The embodiment of the present application provides an optical fiber cable splicing device to solve the technical problem that optical fiber cables are easily affected by the environment during splicing.

[0005] In a first aspect, an embodiment of the present application provides an optical fiber cable splicing device, comprising: A box body, wherein a receiving cavity is provided in the box body, and a side wall of the box body is provided with at least two threading holes connected to the receiving cavity, wherein the threading holes are used to thread optical fibers and cables; An optical fiber fusion splicer, the optical fiber fusion splicer is arranged in the accommodating cavity; A vacuum conversion device, at least part of which is disposed in the accommodating chamber, and the vacuum conversion device is suitable for evacuating the accommodating chamber; An environment detection device is arranged in the box body and is electrically connected to the vacuum conversion device. The environment detection device is used to detect the environmental conditions inside the accommodating cavity and outside the box body.

[0006] In one embodiment, the environmental condition includes at least one of humidity, fine particle concentration, air pressure, and temperature.

[0007] In one embodiment, the housing comprises: A body, wherein the body is provided with the accommodating cavity and an opening communicating with the accommodating cavity, and the threading holes are respectively opened on two opposite side walls of the body; A box cover is disposed on the opening.

[0008] In one embodiment, the side wall of the main body is provided with an inlet and outlet groove connected to the accommodating cavity, and the box body includes a fixing member, which is detachably mounted on the inlet and outlet groove, and the fixing member is sealingly abutted against the inner wall of the inlet and outlet groove, and the outer wall of the fixing member is provided with a first groove, and the first groove connects the accommodating cavity and the external space, and the inner wall of the inlet and outlet groove is provided with a second groove, and the second groove connects the accommodating cavity and the external space, and the first groove and the second groove correspond to enclose to form the threading hole.

[0009] In one embodiment, the entry and exit slots are provided on both sides of the main body, and the box body includes two fixing members, each of which is provided corresponding to one of the entry and exit slots.

[0010] In one embodiment, the entry and exit slots extend in a vertical direction on the side walls of the body.

[0011] In one embodiment, the inner wall of the second groove is provided with a first elastic retractable tongue, and the fixing member comprises: An insert plate, the insert plate is inserted into the inlet and outlet groove and is in sealing contact with the inner wall of the inlet and outlet groove, and the bottom of the insert plate is provided with the first groove; A second elastic telescopic tongue, wherein the second elastic telescopic tongue is arranged on the inner wall of the first groove, and the first elastic telescopic tongue and the second elastic telescopic tongue are arranged opposite to each other.

[0012] In one embodiment, the box body is provided with an air inlet connected to the accommodating cavity, and a control valve is provided at the air inlet.

[0013] In one embodiment, the box body is provided with an operating hole connected to the accommodating cavity, the operating hole is provided with an operating glove, and the operating glove is sealed and connected to the hole wall of the operating hole.

[0014] In one embodiment, the operating holes are disposed on opposite sides of the box body, and an operating glove is disposed corresponding to each operating hole.

[0015] In one embodiment, the optical fiber cable splicing device further comprises a fixing seat, which is disposed in the accommodating cavity and is used to install and fix the optical fiber fusion splicer.

[0016] In one embodiment, the box is provided with a transparent window; And / or, the body is a transparent body; And / or, the box cover is a transparent cover.

[0017] In one embodiment, a display screen is disposed outside the box, and the display screen is electrically connected to the environment detection device.

[0018] In a second aspect, an embodiment of the present application provides an optical fiber cable splicing method based on the above optical fiber cable splicing device, comprising: Passing the optical fiber cable to be connected through the threading hole and placing it in the optical fiber fusion splicer; controlling the environmental detection device to detect the first environmental condition outside the box; When the first environmental condition does not meet a preset condition, controlling the environmental detection device to detect a second environmental condition in the containing chamber; When the second environmental condition does not meet the preset condition, controlling the vacuum conversion device to evacuate the containing chamber; Controlling the environment detection device to detect a third environment condition in the accommodating chamber; When the third environmental condition meets the preset condition, the optical fiber fusion splicer is controlled to complete optical fiber splicing.

[0019] In one embodiment, the parameters in the preset conditions include at least one of humidity, fine particulate matter concentration, air pressure, and temperature.

[0020] The optical fiber cable splicing method according to the embodiment of the present application includes all the technical features of the optical fiber cable splicing device described above, and therefore has all the technical effects of the optical fiber cable splicing device, which will not be described in detail herein.

[0021] The optical fiber cable splicing device provided in the embodiment of the present application is used for the splicing of optical fiber cables by placing an optical fiber splicer in the accommodating cavity in the box. At the same time, an environmental detection device is set on the box to detect the environmental conditions inside and outside the box to determine whether the environmental conditions meet the appropriate conditions for the splicing of optical fiber cables. If the environmental conditions outside the box meet the preset conditions, the splicing operation can be completed outside the box, or there is no need to perform vacuum treatment, and the optical fiber splicing can be completed directly in the optical fiber splicer in the accommodating cavity, saving splicing steps and improving work efficiency. If it is detected that the environmental conditions in the accommodating cavity do not meet the preset conditions, the optical fiber cable can be placed on the optical fiber splicer through the threading hole, and then the vacuum conversion device is started to vacuum the accommodating cavity. The optical fiber cable is spliced ​​under a low vacuum state, which can avoid the air moisture and the mist caused by the temperature difference during the fusion to enter the anti-resonance cavity in the optical fiber cable, and can also avoid the impurities in the air from affecting the quality of the optical fiber, thereby improving the quality of the optical fiber cable link after splicing. In this way, the environmental detection device can be used to unify the surrounding environmental conditions when the optical fiber cable is connected. At the same time, the vacuum conversion device can be used to solve the optical fiber quality problems caused by rainwater and dust entering the optical fiber cable or the air that has entered the optical fiber cable when the optical fiber cable is connected and stripped, thereby improving the link quality of the optical fiber cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a structural schematic diagram of an optical fiber cable splicing device provided in an embodiment of the present application; Figure 2 is a schematic structural diagram of a fixing member provided in an embodiment of the present application; Figure 3 It is a flow chart of the optical fiber cable splicing method provided in the embodiment of the present application; DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] Whether it is a fiber fusion splicer for solid fiber or a fiber fusion splicer for hollow fiber, whether it is indoors or outdoors, the surrounding environment is complex during splicing, and rain, dust and other impurities may appear, such as emergency repairs on rainy days, in coal mines, and on the roadside, and there is no protective device. Existing hollow fiber cables do not have any protective devices during splicing, which will have the following disadvantages: When stripping a hollow-core optical fiber, rain, fog or dust may easily enter the hollow-core corridor inside the hollow-core optical fiber, which may damage the anti-resonance cavity of the hollow-core optical fiber, resulting in poor splicing quality or even rendering the entire hollow-core optical fiber unusable.

[0026] During fusion splicing, the temperature is high, which forms a temperature difference with the outdoor temperature. The air that has entered the hollow-core optical fiber will form fog, affecting the anti-resonance cavity of the hollow-core optical fiber.

[0027] The anti-resonance cavity in the hollow-core optical fiber is very sensitive to the external environment, and even the slightest deviation can cause a large link quality error.

[0028] For the above questions, please refer to Figure 1 and Figure 3 The embodiment of the present application provides an optical fiber cable splicing device, including a box body 1, an optical fiber fusion splicer, a vacuum conversion device 16 and an environmental detection device 17. A accommodating chamber 111 is provided in the box body 1, and at least two threading holes 116 connected to the accommodating chamber 111 are opened on the side wall of the box body 1, and the threading holes 116 are used to thread optical fibers and cables; the optical fiber fusion splicer is arranged in the accommodating chamber 111; at least part of the vacuum conversion device 16 is arranged in the accommodating chamber 111, for example, the working part of the vacuum conversion device 16 is located in the accommodating chamber 111, and the control switch, the start button, etc. pass through the box body 1 and are exposed outside the box body 1, and the vacuum conversion device 16 is suitable for vacuumizing the accommodating chamber 111; the environmental detection device 17 is arranged in the box body 1 and is electrically connected to the vacuum conversion device 16, and the environmental detection device 17 is used to detect the environmental conditions inside the accommodating chamber 111 and outside the box body 1. It should be noted that, since hollow-core optical fiber cables have high requirements on the environment, the optical fiber cables to be connected are taken as hollow-core optical fiber cables as an example. Of course, when necessary, the optical fiber cables to be connected can also be solid optical fiber cables.

[0029] The optical fiber cable splicing device provided in the embodiment of the present application is used for the splicing of optical fiber cables by placing an optical fiber splicer in the accommodating chamber 111 in the box body 1. At the same time, an environmental detection device 17 is provided on the box body 1 to detect the environmental conditions inside and outside the box body 1 to determine whether the environmental conditions meet the appropriate conditions for the splicing of optical fiber cables. If the environmental conditions outside the box body 1 meet the preset conditions, the splicing operation can be completed outside the box body 1, or there is no need to perform vacuum treatment, and the optical fiber splicing can be completed directly in the optical fiber splicer in the accommodating chamber 111, saving splicing steps and improving work efficiency. If it is detected that the environmental conditions in the accommodating chamber 111 do not meet the preset conditions, the optical fiber cable can be placed on the optical fiber splicer through the threading hole 116, and then the vacuum conversion device 16 is started to vacuum the accommodating chamber 111. The optical fiber cable is spliced ​​under a low vacuum state, which can avoid the mist caused by air moisture and temperature difference during splicing from entering the anti-resonance cavity in the optical fiber cable, and can also avoid impurities in the air from affecting the quality of the optical fiber, thereby improving the quality of the optical fiber cable link after splicing. In this way, the environmental detection device 17 can unify the surrounding environmental conditions when the optical fiber cable is connected. At the same time, the vacuum conversion device 16 can solve the optical fiber quality problems caused by rainwater and dust entering the optical fiber cable or the air that has entered the optical fiber cable when the optical fiber cable is connected and stripped, thereby improving the link quality of the optical fiber cable.

[0030] In this embodiment, the box 1 is provided with at least two threading holes 116, and the two threading holes 116 are a group, so that a group of threading holes 116 is coaxially arranged, so that when two optical fibers are arranged in the threading holes 116, they are in the same straight line, which is convenient for the connection work. Exemplarily, the box 1 can be rectangular, and the two threading holes 116 can be respectively arranged on the opposite sides of the box 1, for example, a threading hole 116 is respectively arranged on the left and right sides of the box 1, so that the two optical fibers are directly connected to complete the connection. Of course, in other embodiments, the two threading holes 116 can also be respectively arranged on the adjacent two sides of the box 1, for example, a threading hole 116 is respectively arranged on the front and right sides of the box 1, as long as the two threading holes 116 are in a coaxial arrangement. Optionally, multiple groups of threading holes 116 can be arranged on the box 1, so that multiple corresponding optical fiber fusion splicers can be placed in the accommodating cavity 111 to adapt to the fusion of multiple groups of optical fibers, and the connection work of multiple groups of optical fibers can be completed at the same time.

[0031] It should be noted that the vacuum conversion device 16 can be a micro vacuum pump (also known as an air pump). When the accommodating chamber 111 is evacuated, it is not necessary to turn the accommodating chamber 111 into a vacuum space. As long as the environmental conditions suitable for optical fiber fusion can be achieved, the vacuum conversion device 16 can remove gas molecules, including water vapor, dust, etc., to reduce the pressure and improve the environmental conditions in the accommodating chamber 111. The vacuum conversion device 16 can be installed at the bottom or corner space of the accommodating chamber 111 to avoid affecting the placement of the optical fiber fusion splicer.

[0032] It is understandable that, in addition to the vacuum conversion device 16 improving the environmental conditions in the accommodating chamber 111, the humidity of the air in the accommodating chamber 111 can also be reduced by using desiccants, heating, ventilation, etc. to meet the connection conditions of the optical fiber cable.

[0033] In one embodiment, a power storage device such as a dry cell battery may be further disposed in the accommodating chamber 111 to supply power to the environment detection device 17 and the vacuum conversion device 16 .

[0034] It can be understood that the environment detection device 17 can be embedded in the side wall of the box 1, so that the environmental conditions inside the accommodating cavity 111 and outside the box 1 can be detected at the same time, and the environmental condition parameters of the hollow-core fiber fusion splicing are set in the environment detection device 17 to provide dynamic environment detection comparison data for the hollow-core fiber fusion splicing. Once the data alarm appears, it means that the fusion splicing environment of the hollow-core fiber is unreasonable and the vacuum conversion device 16 needs to be evacuated. The environment detection device 17 is electrically connected to the vacuum conversion device 16, and the electrical connection includes wired connection, wireless connection and other methods. When it is detected that the preset environmental conditions are not met, the environment detection device 17 can control the start and stop of the vacuum conversion device 16 through the circuit. The environment detection device 17 can be configured with a display screen 112, which is convenient for various environmental detection results to be output through the display screen 112 in time, so as to compare the verified data. It is also possible to modify the environmental condition parameters of the input hollow-core fiber fusion splicing on the touch display screen 112 in advance, that is, to modify the preset conditions, and then through the vacuum conversion device 16, the environmental conditions in the accommodating cavity 111 reach the modified input parameter conditions.

[0035] In one embodiment, the environmental conditions include at least one of humidity, fine particle concentration, air pressure, and temperature, wherein the fine particle concentration may be a PM2.5 concentration. That is to say, the environmental detection device 17 may include various detection sensors and storage units for air pressure detection, humidity detection, temperature detection, fine particle concentration detection, etc., and may be disposed on the housing 1. If the environmental conditions are good, such as when the humidity in the air outside the housing 1 is lower than a certain value, welding may be performed directly in the outdoor atmospheric environment. If not satisfied, it is necessary to set the relevant follow-up environmental conditions in the environmental detection device 17 or utilize the stored environmental conditions so that the vacuum conversion device 16 performs a vacuum treatment on the accommodating chamber 111 to achieve the appropriate environmental conditions.

[0036] In one embodiment, the box body 1 includes a body 11 and a box cover 12. The body 11 is provided with a receiving cavity 111 and an opening communicating with the receiving cavity 111. The opposite side walls of the body 11 are respectively provided with threading holes 116. The box cover 12 is disposed on the opening.

[0037] Exemplarily, the body 11 is connected to one side of the box cover 12 by rotation, and the box cover 12 is turned over to open or cover the accommodating chamber 111. The staff can operate the optical fiber fusion splicer through the opening of the accommodating chamber 111, so as to place the optical fiber cable passing through the threading hole 116 in the corresponding position of the optical fiber fusion splicer. Of course, in other embodiments, the body 11 and the box cover 12 can also be detachably connected by sliding connection or snap connection, as long as it is convenient to cover and open the opening, which is not limited here. Optionally, the body 11 is a rectangular box-shaped structure with an opening on the top, and the box cover 12 covers the opening on the top. A sealing ring is provided at the connection between the box cover 12 and the body 11 to complete the sealing of the accommodating chamber 111, so that the vacuum conversion device 16 can vacuumize the accommodating chamber 111. When ensuring that the air does not circulate during vacuuming, the body 11 and the box cover 12 should have pressure resistance, and the atmospheric pressure resistance range is: 10-3 to 10-1 Pa.

[0038] In order to facilitate observation of the internal conditions of the accommodating cavity 111, in one embodiment, the box body 1 is provided with a transparent window, which can be provided on the box cover 12 or on the side wall of the body 11; optionally, the body 11 can also be provided as a transparent body, for example, made of transparent resin or glass; optionally, the box cover 12 can also be provided as a transparent cover. In this way, the working status of the optical fiber fusion splicer can be observed in real time during splicing.

[0039] In one embodiment, a display screen 112 is provided outside the box 1, and the display screen 112 is electrically connected to the environment detection device 17. The display screen 112 is a touch screen 112, which is convenient for the staff to operate and control. The display screen 112 can be used to display the environmental condition parameters detected by the environment detection device 17, so that the staff can view and adjust the work plan.

[0040] In one embodiment, a shoulder strap 115 is connected to the outside of the box 1 for easy carrying.

[0041] In one embodiment, the side wall of the body 11 is provided with an inlet and outlet groove connected to the accommodating chamber 111, and the box body 1 includes a fixing member 13, which is detachably mounted on the inlet and outlet groove, and the fixing member 13 is sealed and abutted against the inner wall of the inlet and outlet groove, and the outer wall of the fixing member 13 is provided with a first groove 1321, and the first groove 1321 is connected to the accommodating chamber 111 and the external space, and the inner wall of the inlet and outlet groove is provided with a second groove 1411, and the second groove 1411 is connected to the accommodating chamber 111 and the external space, and the first groove 1321 and the second groove 1411 are correspondingly enclosed to form a threading hole 116. It can be understood that one side wall of the body 11 can directly provide the threading hole 116, and the other side can provide the inlet and outlet groove, so as to form the threading hole 116 through the fixing member 13 and the inlet and outlet groove. When installing the optical fiber cable, the fixing member 13 can be removed to facilitate the optical fiber cable to extend into the accommodating chamber 111, and then the fixing member 13 is installed at the inlet and outlet groove to fix the optical fiber cable.

[0042] In other embodiments, inlet and outlet grooves may be provided on both opposite side walls of the body 11 , and the fixing member 13 may be in an inverted U-shaped structure to seal at the inlet and outlet grooves on both sides respectively.

[0043] In one embodiment, both sides of the body 11 are provided with inlet and outlet grooves connected to the accommodating cavity 111. The box body 1 also includes two fixing members 13, each of which is detachably mounted on an inlet and outlet groove, and the fixing member 13 is sealed against the inner wall of the inlet and outlet groove. Figure 2 As shown, the outer wall of the fixing member 13 is provided with a first groove 1321, the first groove 1321 connects the accommodating cavity 111 and the external space, the inner wall of the inlet and outlet groove is provided with a second groove 1411, the second groove 1411 connects the accommodating cavity 111 and the external space, and the first groove 1321 and the second groove 1411 correspond to enclose to form a threading hole 116.

[0044] It should be noted that the size of the inlet and outlet groove should be larger than the outer diameter of the optical fiber cable so that the optical fiber cable can pass through the inlet and outlet groove and extend into the accommodating cavity 111. It can be understood that each fixing member 13 is detachably mounted on an inlet and outlet groove. When the optical fiber cable needs to be passed through, the fixing member 13 can be removed so that the optical fiber cable can pass through the inlet and outlet groove to extend into the accommodating cavity 111. At the same time, the optical fiber cable can be placed on the second groove 1411. Subsequently, the fixing member 13 is installed in the inlet and outlet groove so that the first groove 1321 of the fixing member 13 is correspondingly engaged with the second groove 1411. In this way, the optical fiber cable is fixed by the groove walls of the first groove 1321 and the second groove 1411 to prevent the optical fiber cable from shaking. In other words, the first groove 1321 and the second groove 1411 are both semicircular arc-shaped strip groove bodies, and the optical fiber cable is fixed by the cooperation of the two, so that the optical fiber cable can be passed through the threading hole 116 by the perforation operation, which is convenient for operation.

[0045] It should be noted that the entry and exit groove extends from the side wall of the main body 11 in a certain direction, and the first groove 1321 can be set on the bottom wall of the entry and exit groove. At this time, the bottom wall of the entry and exit groove refers to the wall surface of the entry and exit groove away from its groove opening. When the fixing member 13 is installed in place, that is, one end of the fixing member 13 abuts against the bottom wall of the entry and exit groove, the first groove 1321 cooperates with the second groove 1411 to form a threading hole 116, and at the same time completes the limiting fixation of the optical fiber cable.

[0046] In order to ensure the sealing of the accommodating chamber 111, a sealing strip is provided between the fixing member 13 and the groove wall of the inlet and outlet groove. It is understandable that a stop boss can also be provided on the side of the groove wall of the inlet and outlet groove adjacent to the accommodating chamber 111. When the fixing member 13 is installed in the inlet and outlet groove, the stop boss abuts against the fixing member 13. In this way, when the accommodating chamber 111 is vacuumed, the fixing member 13 will not be adsorbed into the accommodating chamber 111.

[0047] In one embodiment, the inlet and outlet grooves may extend in the lateral direction of the side wall of the body 11, for example, one inlet and outlet groove extends in the direction from the front side to the rear side on the left side wall, and the other inlet and outlet groove extends in the direction from the front side to the rear side on the right side wall. In this way, the fixing member 13 may be inserted into the inlet and outlet groove in the lateral direction from the front side to the rear side of the body 11, and the fixing member 13 is sealed against the inlet and outlet groove, thereby limiting the optical fiber cable to be fused between the first groove 1321 and the second groove 1411.

[0048] In one embodiment, the inlet and outlet grooves extend in the vertical direction on the side wall of the body 11, for example, one inlet and outlet groove extends from top to bottom on the left side wall of the body 11, and the other inlet and outlet groove extends from top to bottom on the right side wall of the body 11, so that it is convenient to install and fix the fixing member 13, and the fixing member 13 is accommodated in the inlet and outlet grooves under the action of gravity, and the installation is more stable. At the same time, the first groove 1321 is located on the lower surface of the fixing member 13, and the second groove 1411 is located on the bottom wall of the inlet and outlet groove. When the bottom of the fixing member 13 abuts against the bottom wall of the inlet and outlet groove, the first groove 1321 and the second groove 1411 cooperate to enclose and form the threading hole 116, and the clamping and fixing of the optical fiber cable to be fused is completed at this time.

[0049] like Figure 2 As shown, in one embodiment, the inner wall of the second groove 1411 is provided with a first elastic telescopic tongue, the fixing member 13 includes an insert plate 131 and a second elastic telescopic tongue, the insert plate 131 is inserted into the entry and exit groove and sealed against the inner wall of the entry and exit groove, and the bottom of the insert plate 131 is provided with the first groove 1321; the second elastic telescopic tongue is provided on the inner wall of the first groove 1321, and the first elastic telescopic tongue and the second elastic telescopic tongue are arranged opposite to each other.

[0050] Optionally, the second elastic telescopic tongue is in a semicircular arc shape, and the first elastic telescopic tongue is also in a semicircular arc shape. In this way, when the second elastic telescopic tongue is opposite to the first elastic telescopic tongue, the two cooperate to form a circular hole to facilitate the insertion of the optical fiber cable. The first elastic telescopic tongue and the second elastic telescopic tongue can be moved away from each other under the extrusion of the optical fiber cable to adapt to the optical fiber cable with a larger diameter. It can be understood that elastic extrusion of the optical fiber cable by the first elastic telescopic tongue and the second elastic telescopic tongue is conducive to improving the installation stability of the optical fiber cable, and can adapt to the installation of more optical fiber cables of different sizes, thereby improving adaptability.

[0051] In one embodiment, the box body 1 is provided with an air inlet 114 connected to the accommodating chamber 111, and a control valve is provided at the air inlet 114. It can be understood that the vacuum conversion device 16 is used in conjunction with the air inlet 114. After the optical fiber cable is fused under low vacuum conditions, the box air inlet 114 needs to be opened to keep the atmospheric pressure inside and outside the box the same, and then open the box cover 12. The control valve is used to control the opening and closing of the air inlet 114, that is, when the vacuum conversion device 16 needs to be vacuumed, the control valve closes the air inlet 114, and when the accommodating chamber 111 needs to be opened to take out the fused optical fiber cable, the control valve opens the air inlet 114 to keep the atmospheric pressure inside and outside the accommodating chamber 111 the same.

[0052] In one embodiment, the box body 1 is provided with an operating hole 113 connected to the accommodating chamber 111, and the operating hole 113 is provided with an operating glove, which is sealed and connected to the hole wall of the operating hole 113. It is understandable that the staff can put their hands into the accommodating chamber 111 through the operating hole 113. At the same time, in order to prevent the operating hole 113 from affecting the sealing effect of the accommodating chamber 111, the operating glove is sealed and connected to the hole wall of the operating hole 113 around the operating glove, and the operating glove is integrated with the box body 1 and sealed completely. The staff can reach to the operating position of the optical fiber fusion splicer through the operating glove to perform optical fiber splicing operations. It should be noted that the operating glove has a certain pressure resistance.

[0053] In one embodiment, in order to facilitate the operation of the staff with both hands, operation holes 113 are provided on opposite sides of the box 1, and an operation glove is provided corresponding to each operation hole 113. The two operation holes 113 are symmetrically arranged for the staff to operate with both hands.

[0054] In one embodiment, the optical fiber cable splicing device further includes a fixing seat 15, which is disposed in the accommodating cavity 111, and is used to install and fix the optical fiber fusion splicer. It can be understood that the height of the optical fiber fusion splicer after being installed and fixed on the fixing seat 15 is adapted to the height of the threading hole 116 on the box body 1, so that after the optical fiber cable is passed through the threading hole 116, it is connected to the optical fiber fusion splicer at a corresponding adapted height. The fixing seat 15 can fix the optical fiber fusion splicer by means of snap connection, threaded connection, plug-in connection, etc., which are not limited here.

[0055] In one embodiment, a storage space is further provided in the accommodating cavity 111. After the optical fiber cable is connected, it can be placed in the storage space, and then the remaining fiber cores can be fused together until everything is completed.

[0056] like Figure 3 As shown, in a second aspect, an embodiment of the present application provides an optical fiber cable splicing method based on the above optical fiber cable splicing device, comprising: The optical fiber cable to be connected is passed through the threading hole 116 and placed in the optical fiber fusion splicer. It should be noted that the order of this step is not limited. The time of placing the optical fiber cable can be before or after the first environmental condition is detected, which has nothing to do with the judgment of the preset condition.

[0057] Step 1: Control the environment detection device 17 to detect the first environmental condition outside the box 1; that is, detect whether the surrounding environment outside the box 1 meets the preset conditions for the fiber optic cable connection, such as the humidity in the air outside the box 1 is lower than the preset humidity value, and the fine particle concentration value outside the box 1 is lower than the preset concentration value, or both conditions are met at the same time. At this time, the fiber optic cable connection work can be completed outside the box 1, and there is no need to open the box 1 to perform related operations in the accommodating chamber 111, which is convenient for saving operation steps. Of course, it is also possible to open the box 1 to take out the fiber optic fusion splicer, or to complete the fiber optic connection work directly in the accommodating chamber 111. At this time, there is no need to start the vacuum conversion device 16 to vacuum the accommodating chamber 111. In other words, by detecting the air pressure, humidity, temperature, impurities, etc. in the air outside the box 1 and comparing them with the pre-set conditions, if an alarm prompt appears, the surrounding environment of the fiber optic cable fusion needs to be processed.

[0058] Step 2: When the first environmental condition does not meet the preset condition, control the environmental detection device 17 to detect the second environmental condition in the accommodating cavity 111; it can be understood that when the first environmental condition outside the box body 1 does not meet the preset condition, the optical fiber splicing work can be completed in the accommodating cavity 111. In this case, it is necessary to detect the second environmental condition in the accommodating cavity 111. If the second environmental condition meets the preset condition, the optical fiber splicing work can be completed in the accommodating cavity 111.

[0059] Step three: When the second environmental condition does not meet the preset condition, control the vacuum conversion device 16 to vacuum the accommodating chamber 111; that is, when the environmental conditions outside the box body 1 and inside the accommodating chamber 111 do not meet the preset conditions, the optical fiber cable to be connected can be placed in advance at the connection position corresponding to the optical fiber fusion splicer in the accommodating chamber 111. For example, after the hollow-core optical fiber is stripped, the hollow-core optical fiber end is untied, and the hollow-core optical fiber is placed at the optical fiber fusion splicer in the box body 1, and the accommodating chamber 111 is sealed. At this time, the vacuum conversion device 16 can be turned on to vacuum the accommodating chamber 111 so that the environmental conditions in the accommodating chamber 111 meet the preset conditions.

[0060] Step 4: Control the environment detection device 17 to detect the third environment condition in the accommodating chamber 111; that is, after the vacuum conversion device 16 is turned on for a period of time, the third environment condition in the accommodating chamber 111 is detected again to see if it meets the preset condition. If it still does not meet the preset condition, the vacuum conversion device 16 can be turned on again.

[0061] Step 5: When the third environmental condition meets the preset condition, control the optical fiber fusion splicer to complete the optical fiber splicing. The optical fiber cable is spliced ​​under a low vacuum state, and the air is dry. During the splicing, no fog or a small amount of fog is generated inside the optical fiber cable. Splicing the optical fiber cable under a low vacuum state can prevent air moisture and fog caused by the temperature difference during the splicing from entering the anti-resonance cavity inside the optical fiber cable, and can also prevent impurities in the air, thereby improving the link quality of the optical fiber cable after splicing. After completing the optical fiber splicing work, the air inlet 114 can be opened to balance the air pressure inside and outside the accommodating chamber 111, so as to facilitate opening the box cover 2 and taking out the spliced ​​optical fiber cable.

[0062] In one embodiment, the preset conditions include at least one of humidity, fine particle concentration, air pressure, and temperature. The fine particle concentration may be a PM2.5 concentration. In other words, the preset conditions may include air pressure values, humidity values, temperature values, fine particle concentration values, and the like. If the first environmental condition meets the preset conditions, such as the humidity in the air outside the box 1 is lower than the preset humidity value, welding can be performed directly in the outdoor atmospheric environment. If the second environmental condition does not meet the preset conditions, it is necessary to set the relevant follow-up environmental conditions in the environmental detection device 17 or to use the stored preset conditions so that the vacuum conversion device 16 performs a vacuum treatment on the accommodating chamber 111 to achieve the appropriate environmental conditions, and finally make the third environmental condition meet the preset conditions.

[0063] In one embodiment, the connection process of the hollow-core optical fiber cable in the box 1 is as follows: Open the touch screen 112 on the box 1 to detect the environmental conditions inside and outside the box 1, such as humidity, PM2.5, etc. If the environmental conditions are good, such as the moisture content in the air is lower than a certain value, welding can be performed directly in the outdoor atmospheric environment. If not, it is necessary to set the relevant connection environmental conditions on the touch screen 112 or call out the stored environmental conditions and display them on the screen 112.

[0064] When the environmental conditions are not met, take out the fixing member 13 on the box body 1 for clamping and fixing the hollow-core optical fiber cable, pass the hollow-core optical fiber cable through the inlet and outlet groove to the accommodating cavity 111, and insert the fixing member 13 into the inlet and outlet groove to clamp and fix the hollow-core optical fiber cable.

[0065] Check the sealing of the box 1.

[0066] The sealing of box 1 is qualified, the hollow-core optical fiber cable is stripped, and the hollow-core optical fiber cap is opened or the hollow-core optical fiber is cut off.

[0067] The box cover 12 is closed, the sealing of the box body 1 is checked, and the vacuum conversion device 16 is started to pump the air in the accommodating chamber 111 to achieve the set welding environment conditions.

[0068] After the environmental conditions are met, the technician reaches into the accommodating cavity 111 through the operating gloves at the operating hole 113, places the hollow optical fiber cable in the box 1 on the optical fiber fusion splicer, and starts the optical fiber fusion splicing.

[0069] After a hollow-core optical fiber cable is fusion-spliced, the hollow-core optical fiber cable is taken out from the fusion splicer and placed on one side in the box 1 , and then the remaining fiber cores are fusion-spliced ​​until all are completed, and the air inlet 114 on the box 1 is opened.

[0070] Finally, the box cover 12 is opened, and the hollow-core optical fiber cable that has been fused is taken out and coiled into the optical fiber fusion tray.

[0071] The optical fiber cable splicing method according to the embodiment of the present application includes all the technical features of the optical fiber cable splicing device described above, and therefore has all the technical effects of the optical fiber cable splicing device, which will not be described in detail herein.

[0072] It can be understood that the hollow-core optical fiber cable connected in the accommodating cavity 111 of the box body 1 has the following functional advantages: The box 1 is provided with an environment detection device 17, which has the function of detecting the surrounding environment, especially in areas with severe moisture or dust. Once the end of the hollow-core optical fiber is untied, moisture or dust in the air will enter the anti-resonance cavity in the hollow-core optical fiber, causing damage in the anti-resonance cavity to ensure the quality of welding. In addition, the environment detection device 17 can be used as an intelligent detection control center, and preset welding conditions are set in the environment detection device 17. When the preset conditions are not met, an alarm prompt is activated to reduce errors caused by human judgment.

[0073] The box 1 is provided with a vacuum conversion device 16, which can create suitable environmental conditions under inappropriate environmental conditions. That is, the air in the accommodating chamber 111 is extracted through the vacuum conversion device 16, so that the accommodating chamber 111 becomes a low vacuum state, and the connection is realized anytime and anywhere, regardless of external environmental conditions. The welding quality of optical fiber and cable in the low vacuum state is significantly higher than that in the air.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An optical fiber cable splicing device, characterized in that: include: A box body, wherein a receiving cavity is provided in the box body, and a side wall of the box body is provided with at least two threading holes connected to the receiving cavity, wherein the threading holes are used for threading optical fibers and cables; An optical fiber fusion splicer, the optical fiber fusion splicer is arranged in the accommodating cavity; A vacuum conversion device, at least part of which is disposed in the accommodating chamber, and the vacuum conversion device is suitable for evacuating the accommodating chamber; An environment detection device is arranged in the box body and is electrically connected to the vacuum conversion device. The environment detection device is used to detect the environmental conditions inside the accommodating cavity and outside the box body.

2. The optical fiber cable splicing device according to claim 1, characterized in that: The environmental condition includes at least one of humidity, fine particle concentration, air pressure, and temperature.

3. The optical fiber cable splicing device according to claim 1, characterized in that: The box body comprises: A body, wherein the body is provided with the accommodating cavity and an opening communicating with the accommodating cavity, and the threading holes are respectively opened on two opposite side walls of the body; A box cover is arranged on the opening.

4. The optical fiber cable splicing device according to claim 3, characterized in that: The side wall of the main body is provided with an inlet and outlet groove connected to the accommodating cavity, and the box body includes a fixing piece, which is detachably mounted on the inlet and outlet groove, and the fixing piece is sealingly abutted against the inner wall of the inlet and outlet groove. The outer wall of the fixing piece is provided with a first groove, and the first groove connects the accommodating cavity and the external space. The inner wall of the inlet and outlet groove is provided with a second groove, and the second groove connects the accommodating cavity and the external space. The first groove and the second groove correspond to enclose the threading hole.

5. The optical fiber cable splicing device according to claim 4, characterized in that: The entry and exit slots are provided on both sides of the main body, and the box body includes two fixing members, each of which is provided corresponding to one of the entry and exit slots.

6. The optical fiber cable splicing device according to claim 4, characterized in that: The entry and exit slots extend along a vertical direction on the side walls of the body.

7. The optical fiber cable splicing device according to claim 6, characterized in that: The inner wall of the second groove is provided with a first elastic retractable tongue, and the fixing member comprises: An insert plate, the insert plate is inserted into the inlet and outlet groove and is in sealing contact with the inner wall of the inlet and outlet groove, and the bottom of the insert plate is provided with the first groove; A second elastic telescopic tongue, wherein the second elastic telescopic tongue is arranged on the inner wall of the first groove, and the first elastic telescopic tongue and the second elastic telescopic tongue are arranged opposite to each other.

8. The optical fiber cable splicing device according to claim 1, characterized in that: The box body is provided with an air inlet connected to the accommodating cavity, and a control valve is provided at the air inlet.

9. The optical fiber cable splicing device according to any one of claims 1 to 8, characterized in that: The box body is provided with an operating hole communicating with the accommodating cavity, the operating hole is provided with an operating glove, and the operating glove is sealedly connected to the hole wall of the operating hole.

10. The optical fiber cable splicing device according to claim 9, characterized in that: The operating holes are arranged on opposite sides of the box body, and each operating hole is correspondingly provided with an operating glove.

11. The optical fiber cable splicing device according to any one of claims 1 to 8, characterized in that: The optical fiber cable splicing device further comprises a fixing seat, which is arranged in the accommodating cavity and is used for installing and fixing the optical fiber fusion splicer.

12. The optical fiber cable splicing device according to claim 3, characterized in that: The box body is provided with a transparent window; And / or, the body is a transparent body; And / or, the box cover is a transparent cover.

13. The optical fiber cable splicing device according to any one of claims 1 to 8, characterized in that: A display screen is disposed outside the box, and the display screen is electrically connected to the environment detection device.

14. The optical fiber cable splicing method according to any one of claims 1 to 13, characterized in that: include: Passing the optical fiber cable to be connected through the threading hole and placing it in the optical fiber fusion splicer; Controlling the environment detection device to detect a first environmental condition outside the box; When the first environmental condition does not meet a preset condition, controlling the environmental detection device to detect a second environmental condition in the containing chamber; When the second environmental condition does not meet the preset condition, controlling the vacuum conversion device to evacuate the containing chamber; Controlling the environment detection device to detect a third environment condition in the accommodating chamber; When the third environmental condition meets the preset condition, the optical fiber fusion splicer is controlled to complete optical fiber splicing.

15. The optical fiber cable splicing method according to claim 14, characterized in that: The parameters in the preset conditions include at least one of humidity, fine particulate matter concentration, air pressure, and temperature.

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