Connecting device and use method thereof

Abstract

The invention provides a connection device and a use method thereof, and relates to the technical field of communication cables. The connection device comprises a photoelectric composite cable, the photoelectric composite cable comprises an optical transmission structure, an electric transmission structure and a protection layer, the protection layer wraps the peripheries of the optical transmission structure and the electric transmission structure, and the optical transmission structure comprises a first optical fiber, a metal sheath and a metal inner armor. And the second optical fiber is connected with the first optical fiber. The photoelectric composite cable and the second optical fiber are respectively connected into the optical fiber splice tray through the first cable leading port and the second cable leading port, and the first optical fiber is connected with the second optical fiber. The first end of the first grounding wire is electrically connected with the metal inner armor, and the second end of the first grounding wire is grounded. The first end of the second grounding wire is electrically connected with the metal sheath, and the second end of the second grounding wire is grounded. According to the technical scheme, the metal inner armor and the metal sheath are grounded, so that the optical transmission structure and the photoelectric composite cable are protected.

Description

Technical Field

[0001] The present application relates to the technical field of communication cables, and in particular to a connecting device and a method for using the same. Background Art

[0002] Optoelectronic composite cables are used as transmission lines in offshore wind farms, oil and gas platforms and other fields. They integrate optical fiber and power transmission, and can solve the problems of broadband access, equipment power consumption and signal transmission.

[0003] During the installation of the optoelectronic composite cable, due to the long distance, it is necessary to use an optical fiber splicing box to connect the optical transmission structure in the optoelectronic composite cable.

[0004] However, after the connection is completed, the optical transmission structure of the optoelectronic composite cable is prone to heat up during the transmission process, which may damage the optoelectronic composite cable. Summary of the Invention

[0005] The present application provides a connecting device and a method for using the same, which are used to solve the technical problem in the related art that the optical transmission structure of the optoelectronic composite cable is easily heated during transmission, thereby damaging the optoelectronic composite cable.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] In one aspect, the present application provides a connection device, comprising:

[0008] An optoelectronic composite cable, comprising an optical transmission structure, an electrical transmission structure, and a protective layer, wherein the protective layer is coated on the outer periphery of the optical transmission structure and the electrical transmission structure, and the optical transmission structure comprises a first optical fiber, a metal sheath, and a metal inner armor arranged from the inside out;

[0009] a second optical fiber, the second optical fiber being connected to the first optical fiber;

[0010] An optical fiber splicing box, the optical fiber splicing box comprising a first cable lead-in port and a second cable lead-in port;

[0011] The optical-electric composite cable and the second optical fiber are connected to the optical fiber splicing box through the first cable lead-in port and the second cable lead-in port respectively, and the first optical fiber is connected to the second optical fiber;

[0012] a first grounding wire, wherein a first end of the first grounding wire is electrically connected to the metal inner armor, and a second end of the first grounding wire is grounded;

[0013] A second grounding wire, wherein a first end of the second grounding wire is electrically connected to the metal sheath, and a second end of the second grounding wire is grounded.

[0014] Based on the above technical solution, this application can also be improved as follows.

[0015] In a possible implementation, the optical fiber splicing box further includes a lead-out port, and the lead-out port is used for leading out the second end of the first grounding wire and the second end of the second grounding wire for grounding.

[0016] In a possible implementation, the optical fiber splicing box further includes a sealing member, which is installed at the lead-out port and is used to seal the lead-out port.

[0017] In a possible implementation, the sealing component is a stuffing box.

[0018] In a possible implementation, the connection device further includes:

[0019] a copper pressure tube, the copper pressure tube covering and pressing the first end of the first grounding wire and the metal inner armor;

[0020] A wiring terminal is mounted on the metal sheath, and the wiring terminal is electrically connected to the metal sheath and the first end of the second grounding wire.

[0021] In a possible implementation, a fastening screw is passed through the copper pressure tube.

[0022] In a possible implementation, the connecting device further includes an insulating tape, which is bonded to and covers the copper pressure tube.

[0023] In a possible implementation, the optical fiber splicing closure further includes a third grounding wire, a first end of the third grounding wire is electrically connected to the box body of the optical fiber splicing closure, and a second end of the third grounding wire is grounded.

[0024] On the other hand, the present application provides a method for using a splicing device, which is applied to the splicing device in any of the above solutions, and the method includes:

[0025] Straighten the optical-electric composite cable;

[0026] Removing the protective layer, the metal inner armor, and the metal sheath of the optical-electrical composite cable to expose a first length of the metal inner armor, a second length of the metal sheath, and a third length of the first optical fiber;

[0027] Connecting the processed metal inner armor, the metal sheath and the first optical fiber to the first cable lead port of the optical fiber splicing box and sealing and fixing them;

[0028] electrically connecting a first end of a first grounding conductor to the metal inner armor;

[0029] electrically connecting a first end of a second grounding wire to the metal sheath;

[0030] Connecting the second optical fiber to the second cable lead port of the optical fiber splicing box and sealing and fixing it;

[0031] connecting the first optical fiber and the second optical fiber;

[0032] The second end of the first grounding wire and the second end of the second grounding wire are grounded.

[0033] Based on the above technical solution, this application can also be improved as follows.

[0034] Connecting the first optical fiber and the second optical fiber comprises:

[0035] cleaning the first optical fiber and the second optical fiber;

[0036] fusing the first optical fiber and the second optical fiber;

[0037] Test whether the first optical fiber and the second optical fiber are correctly connected.

[0038] The splicing device and its use method provided by this application have the following beneficial effects:

[0039] The splicing device and its use method provided in the present application complete the optical fiber splicing by connecting the optoelectronic composite cable to the first cable lead port of the optical fiber splicing box, connecting the second optical fiber to the second cable lead port of the optical fiber splicing box, and connecting the first optical fiber in the optoelectronic composite cable to the second optical fiber. Compared with the related art of directly connecting optical fibers through the optical fiber splicing box, the splicing device and its use method provided in the present application electrically connect the first end of the first grounding conductor to the metal inner armor of the optoelectronic composite cable, ground the second end of the first grounding conductor, thereby grounding the metal inner armor. The first end of the second grounding conductor is electrically connected to the metal sheath of the optoelectronic composite cable, and the second end of the second grounding conductor is grounded, thereby grounding the metal sheath. This arrangement can guide the induced current generated in the metal inner armor and metal sheath due to the operation of the electrical transmission structure in the optoelectronic composite cable, prevent heating of the metal inner armor and metal sheath, and protect the optical transmission structure and the optoelectronic composite cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in 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 any creative work.

[0041] Figure 1 A schematic diagram of the structure of the connecting device provided in an embodiment of the present application;

[0042] Figure 2 A schematic cross-sectional view of a connection device provided in an embodiment of the present application;

[0043] Figure 3 A schematic diagram of the optical transmission structure connection provided for the application embodiment.

[0044] Description of reference numerals:

[0045] 100-optical composite cable;

[0046] 110 - optical transmission structure; 111 - first optical fiber; 112 - metal sheath; 113 - metal inner armor;

[0047] 200-second optical fiber;

[0048] 300-fiber optic splice box;

[0049] 310-first cable-drawing opening; 320-second cable-drawing opening; 330-drawing opening; 340-sealing element;

[0050] 350-third wiring wire;

[0051] 400-first grounding wire;

[0052] 500- second grounding wire;

[0053] 610-Copper pressure tube; 620-Terminal block; 630-Insulation tape. DETAILED DESCRIPTION

[0054] Generally, during the transmission process of optoelectronic composite cables, there is a technical problem that the optical transmission structure is prone to heat up, which may damage the optoelectronic composite cable. The reason for this problem is that the electrical transmission structure in the optoelectronic composite cable forms an electric field when transmitting current. Since the metal inner armor and metal sheath in the optical transmission structure in the optoelectronic composite cable are conductors, under the influence of this electric field, induced charges and currents are formed in the metal inner armor and metal sheath, which makes the metal inner armor, metal sheath and optical transmission structure prone to heat up, thereby damaging the optoelectronic composite cable.

[0055] In response to the above technical problems, an embodiment of the present application provides a connection device and a method for using the same. By electrically connecting the first end of the first grounding wire to the metal inner armor and grounding the second end of the first grounding wire, the metal inner armor is grounded, the induced charge in the metal inner armor is drawn out, and the metal inner armor is prevented from heating up. By electrically connecting the first end of the second grounding wire to the metal sheath and grounding the second end of the second grounding wire, the metal sheath is grounded, the induced charge in the metal sheath is drawn out, and the metal sheath is prevented from heating up, thereby protecting the optical transmission structure and the optoelectronic composite cable.

[0056] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0057] refer to Figure 1 and Figure 2 An embodiment of the present application provides a splicing device, which includes an optoelectronic composite cable 100, a second optical fiber 200, an optical fiber splicing box 300, a first grounding wire 400, and a second grounding wire 500.

[0058] The optoelectronic composite cable 100 includes an optical transmission structure 110, an electrical transmission structure and a protective layer, wherein the optical transmission structure 110 is used to transmit optical signals, the electrical transmission structure is used to transmit electrical signals, and the protective layer is coated on the periphery of the optical transmission structure 110 and the electrical transmission structure, thereby protecting the optical transmission structure 110 and the electrical transmission structure.

[0059] like Figure 3 As shown, the optical transmission structure 110 includes a first optical fiber 111, a metal sheath 112, and a metal inner armor 113, arranged from the inside out. The first optical fiber 111 is used to transmit optical signals. The metal sheath 112 wraps around the first optical fiber 111 to provide protection and support for the first optical fiber 111. The metal sheath 112 can be made of stainless steel or aluminum alloy. The metal sheath 112 and the first optical fiber 111 form a cable core. The metal inner armor 113 wraps around the cable core, for example, by braiding or wrapping the metal inner armor 113 around the cable core. The metal inner armor 113 is used to protect the cable core from being gnawed or burned, and to improve the tensile and compressive properties of the optical transmission structure. The metal inner armor 113 can be galvanized steel strip, copper strip, aluminum alloy strip, etc.

[0060] The second optical fiber 200 is a connection target of the optical fiber composite cable 100 . The second optical fiber 200 may be an optical fiber in another optical fiber composite cable or an optical fiber in an optical cable that only transmits optical signals. The second optical fiber 200 is connected to the first optical fiber 111 .

[0061] The optical fiber splicing box 300 is used to connect the first optical fiber 111 and the second optical fiber 200. Figure 2As shown, the optical fiber splice box 300 includes a first cable draw port 310 and a second cable draw port 320, and the first cable draw port 310 and the second cable draw port 320 are used to introduce the optoelectronic composite cable 100 and the second optical fiber 200. For example, the optoelectronic composite cable 100 is connected to the optical fiber splice box 300 through the first cable draw port 310, and the second optical fiber 200 is connected to the optical fiber splice box 300 through the second cable draw port 320. The first optical fiber 111 and the second optical fiber 200 are connected in the optical fiber splice box 300. For example, after stripping off part of the protective layer, the metal inner armor 113 and the metal sheath 112 of the optoelectronic composite cable 100 to expose the first optical fiber 111, the first optical fiber 111 and the second optical fiber 200 are connected.

[0062] The first grounding wire 400 is used to ground the metal inner armor 113. The first end of the first grounding wire 400 is electrically connected to the metal inner armor 113, and the second end of the first grounding wire 400 is grounded. For example, the second end of the first grounding wire 400 is buried underground or connected to a grounding grid, and the lead wire of the grounding grid is then buried underground.

[0063] The second grounding wire 500 is used to ground the metal sheath 112. The first end of the second grounding wire 500 is electrically connected to the metal sheath 112, and the second end of the second grounding wire 500 is grounded. For example, the second end of the second grounding wire 500 is buried underground or connected to a grounding grid, and then the lead wire of the grounding grid is buried underground.

[0064] The present embodiment provides a splicing device that connects a first optical fiber 111 and a second optical fiber 200 to an optical cable splicing box 300 through a first cable delivery port 310 and a second cable delivery port 320, respectively, thereby connecting the first optical fiber 111 to the second optical fiber 200. The metal inner armor 113 is grounded via a first grounding conductor 400, and the metal sheath 112 is grounded via a second grounding conductor 500. This allows the current induced by the electrical connection structure in the metal inner armor 113 and the metal sheath 112 to be drawn out, thereby preventing heating of the metal inner armor 113 and the metal sheath 112, and thus protecting the optical connection structure and the optoelectronic composite cable.

[0065] In some embodiments, the optical fiber splicing box 300 further includes an outlet 330, such as Figure 2 As shown, the lead-out port 330 is provided on the top cover of the optical fiber splice box 300. It should be noted that the lead-out port 330 can also be provided on any side wall of the optical fiber splice box 300. The lead-out port 330 is used to facilitate the first grounding wire 400 and the second grounding wire 500 to be led out from the optical fiber splice box 300. The number of the lead-out ports 330 can be two, such as Figure 2As shown, the first grounding conductor 400 and the second grounding conductor 500 are led out of two lead-out ports 330, respectively. Alternatively, the number of lead-out ports 330 may be one, with the first grounding conductor 400 and the second grounding conductor 500 both led out of the same lead-out port 330. However, insulation between the first grounding conductor 400 and the second grounding conductor 500 must be ensured to prevent interference between them. Providing the lead-out ports 330 in the optical fiber splice box 300 facilitates grounding the second ends of the first grounding conductor 400 and the second grounding conductor 500.

[0066] Based on the above embodiment, the optical fiber splice closure 300 further includes a seal 340 for sealing the lead-out port 330. The seal 340 is installed at the lead-out port 330 and can be a rubber seal. For example, when the rubber seal seals the lead-out port 330 corresponding to the first grounding conductor 400, the inner wall of the rubber seal embraces the first grounding conductor 400, while the outer wall of the rubber seal fits against the inner wall of the lead-out port 330, thereby achieving a seal between the first grounding conductor 400 and the corresponding lead-out port 330. When the second grounding conductor 500 is sealed with the corresponding lead-out port 330 by the rubber seal, and when the first grounding conductor 400 and the second grounding conductor 500 are led out of the same lead-out port 330, the sealing of the lead-out port 330 is the same as in the above embodiment and will not be further described here. Sealing the lead-out port 330 with the seal 340 can improve the sealing performance of the optical fiber splice closure 300.

[0067] In some embodiments, as Figure 2 As shown, seal 340 can be a stuffing box. The stuffing box can include a hollow main structure and a filler. The main structure is mounted at outlet 330, and a grounding wire extends through the cavity within the main structure. The grounding wire can be either a first grounding conductor 400 or a second grounding conductor 500, or a combination thereof. The filler, which can be polytetrafluoroethylene asbestos filler, carbon graphite filler, rubber asbestos filler, or the like, is placed between the grounding wire and the main structure to achieve a seal. Sealing through the stuffing box provides a good seal and facilitates maintenance.

[0068] refer to Figure 3 In some embodiments, the connection device further includes a copper pressure tube 610 and a terminal 620. The copper pressure tube 610 can be a hollow copper short tube that covers and compresses the first end of the first grounding wire 400 and the metal inner armor 113. For example, the first grounding wire 400 and the metal inner armor 113 are both passed through the copper pressure tube 610, and the copper pressure tube has a recessed portion. The recessed portion presses the first grounding wire 400 and the metal inner armor 113, thereby electrically connecting the first end of the first grounding wire 400 and the metal inner armor 113. This configuration can ensure a stable connection between the first grounding wire 400 and the metal inner armor 113.

[0069] Terminal block 620 is a product for achieving electrical connection. Terminal block 620 is mounted on metal sheath 112 and is electrically connected to both metal sheath 112 and the first end of second grounding conductor 500. For example, terminal block 620 includes a metal pick and an insulating body. The insulating body includes a housing cavity within which a conductor is mounted. The housing cavity has a first interface and a second interface. The first end of the conductor is exposed at the first interface, and the second end is exposed at the second interface. Metal sheath 112 is threadedly mounted at the first interface and contacts the first end of the conductor. The first end of second grounding conductor 500 penetrates the second interface and contacts the second end of the conductor. This arrangement facilitates electrical connection between the first end of the second grounding conductor and metal sheath 112, resulting in a simple structure and easy maintenance.

[0070] On the basis of the above embodiment, the copper pressure tube 610 is provided with a fastening screw. If the fastening screw is passed through along the diameter direction of the copper pressure tube 610, it can avoid instability in the copper pressure tube 610 crimping the first end of the first grounding wire 400 and the metal inner armor 113. The fastening screw can also be passed through the recessed portion of the copper pressure tube 610 to further increase the stability of the copper pressure tube 610 crimping the first end of the first grounding wire 400 and the metal inner armor 113.

[0071] In some embodiments, reference Figure 3 The connection device also includes insulating tape 630, which is applied to and wrapped around the copper pressure tube 610 to insulate the copper pressure tube 610 and prevent electrical leakage. The insulating tape can be polyester tape, polyethylene tape, linen tape, etc. It should be noted that insulating tape 630 can also be applied to the outside of the terminal 620 to prevent electrical leakage.

[0072] In some embodiments, reference Figure 1 The optical fiber splice closure 300 also includes a third grounding wire 350. The third grounding wire 350 is used to ground the body of the optical fiber splice closure 300 to protect the optical fiber splice closure 300. A first end of the third grounding wire 350 is connected to the body of the optical fiber splice closure 300. For example, a grounding bolt is provided on the body of the optical fiber splice closure 300. The first end of the third grounding wire 350 is wrapped around the grounding bolt and tightened with a nut. A second end of the third grounding wire 350 is grounded. For example, the second end of the third grounding wire 350 is buried underground or connected to a grounding grid, and the lead wire of the grounding grid is then buried underground.

[0073] The present application also provides a method for using a splicing device, which is applied to the splicing device in any of the above items, and the method for using the splicing device includes:

[0074] The optical / electrical composite cable 100 is straightened, for example, one end of the optical / electrical composite cable 100 is fixed and the other end is tightened.

[0075] The protective layer, the metal inner armor 113 and the metal sheath 112 of the optical fiber composite cable 100 are removed to expose the first length of the metal inner armor 113, the second length of the metal sheath 112 and the third length of the first optical fiber 111. Figure 3 , partially peel off the protective layer with scissors to expose the metal inner armor 113. Then, use a cutter, wire stripper, or other tool to remove the partially exposed metal inner armor 113. The remaining metal inner armor 113 forms a first length of metal inner armor 113, exposing the metal sheath 112. Finally, use an electrician's knife to remove the partially exposed metal sheath 112. The remaining metal sheath 112 forms a second length of metal sheath 112, exposing the first optical fiber 111, and forming a third length of first optical fiber 111. The first length can range from 10 to 20 centimeters, the second length can range from 20 to 40 centimeters, and the third length can range from 100 to 200 centimeters.

[0076] The treated metal inner armor 113, metal sheath 112, and first optical fiber 111 are connected to the first cable delivery port 310 of the optical fiber splice closure 300 and sealed and fixed. The treated metal inner armor 113, metal sheath 112, and first optical fiber 111 are the metal inner armor 113, metal sheath 112, and first optical fiber 111 exposed after the above-mentioned steps. The sealing and fixing method can be to provide a stuffing box at the first cable delivery port 310 for sealing and fix it by threading.

[0077] The first end of the first grounding wire 400 is electrically connected to the metal inner armor 113. For example, the first end of the first grounding wire 400 and the metal inner armor 113 are crimped together by a copper crimping tube 610 to achieve electrical connection between the first end of the first grounding wire 400 and the metal inner armor 113.

[0078] The first end of the second grounding wire 500 is electrically connected to the metal sheath 112 . For example, the first end of the second grounding wire 500 and the metal sheath 112 are both connected to the terminal 620 .

[0079] The second optical fiber 200 is connected to the second cable introduction port 320 of the optical fiber splicing box 300 and sealed and fixed. For example, a stuffing box is set at the second cable introduction port 320 for sealing and fixed by threaded connection.

[0080] The first optical fiber 111 and the second optical fiber 200 are connected, for example, by fusion splicing.

[0081] The second ends of the first grounding wire 400 and the second end of the second grounding wire 500 are grounded. For example, the second ends of the first grounding wire 400 and the second end of the second grounding wire 500 are led out through the lead-out port 330 of the optical fiber splicing box 300 and buried underground or connected to a grounding grid.

[0082] The method for using the splicing device provided in the embodiment of the present application connects the first optical fiber 111 and the second optical fiber 200 in the optical fiber splicing box 300, grounds the metal inner armor 113 via the first grounding wire 400 to prevent heat damage to the metal inner armor 113, and grounds the metal sheath 112 via the second grounding wire 500 to prevent heat damage to the metal sheath 112. This protects the optical transmission structure 110 and the optoelectronic composite cable 100.

[0083] Based on the above embodiment, connecting the first optical fiber 111 and the second optical fiber 200 includes:

[0084] Clean the first optical fiber 111 and the second optical fiber 200, for example, by using anhydrous alcohol to prevent impurities from damaging the first optical fiber 111 and the second optical fiber 200.

[0085] The first optical fiber 111 and the second optical fiber 200 are fused together, for example, by using an optical fiber fusion splicer.

[0086] Test whether the first optical fiber 111 and the second optical fiber 200 are correctly connected. For example, input an optical signal to the first optical fiber 111 and detect whether an optical signal is output from the second optical fiber 200. If so, the first optical fiber 111 and the second optical fiber 200 are correctly connected.

[0087] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0088] It should be noted that phrases such as "in a specific implementation," "in some embodiments," "in this embodiment," and "exemplarily" mentioned in the specification indicate that the described embodiment may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0089] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0090] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include at least one of these features.

[0091] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two elements, or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0092] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0093] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0094] 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 them. 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 or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A splicing device, characterized in that: include: An optoelectronic composite cable, comprising an optical transmission structure, an electrical transmission structure, and a protective layer, wherein the protective layer is coated on the outer periphery of the optical transmission structure and the electrical transmission structure, and the optical transmission structure comprises a first optical fiber, a metal sheath, and a metal inner armor arranged from the inside out; a second optical fiber, the second optical fiber being used to connect to the first optical fiber; An optical fiber splicing box, the optical fiber splicing box comprising a first cable lead-in port and a second cable lead-in port; The optical-electric composite cable and the second optical fiber are connected to the optical fiber splicing box through the first cable lead-in port and the second cable lead-in port respectively, and the first optical fiber is connected to the second optical fiber; a first grounding wire, wherein a first end of the first grounding wire is electrically connected to the metal inner armor, and a second end of the first grounding wire is grounded; A second grounding wire, wherein a first end of the second grounding wire is electrically connected to the metal sheath, and a second end of the second grounding wire is grounded.

2. The splicing device according to claim 1, characterized in that: The optical fiber splicing box further comprises an outlet, wherein the outlet is used for leading out the second end of the first grounding wire and the second end of the second grounding wire for grounding.

3. The splicing device according to claim 2, characterized in that: The optical fiber splicing box further comprises a sealing member, which is installed at the lead-out port and is used to seal the lead-out port.

4. The splicing device according to claim 3, characterized in that: The sealing element is a stuffing box.

5. The splicing device according to claim 1, characterized in that: The connecting device further comprises: a copper pressure tube, the copper pressure tube covering and pressing the first end of the first grounding wire and the metal inner armor; A wiring terminal is mounted on the metal sheath, and the wiring terminal is electrically connected to the metal sheath and the first end of the second grounding wire.

6. The splicing device according to claim 5, characterized in that: The copper pressure tube is penetrated by a fastening screw.

7. The splicing device according to claim 5, characterized in that: The connecting device further comprises an insulating tape, which is bonded to and covers the copper pressure tube.

8. The splicing device according to claim 1, characterized in that: The optical fiber splicing box further comprises a third grounding wire, a first end of the third grounding wire is electrically connected to the box body of the optical fiber splicing box, and a second end of the third grounding wire is grounded.

9. A method for using a splicing device, characterized in that: Applicable to the splicing device according to any one of claims 1 to 8, the method of use comprising: Straighten the optical-electric composite cable; Removing the protective layer, the metal inner armor, and the metal sheath of the optical-electrical composite cable to expose a first length of the metal inner armor, a second length of the metal sheath, and a third length of the first optical fiber; Connecting the processed metal inner armor, the metal sheath and the first optical fiber to the first cable lead port of the optical fiber splicing box and sealing and fixing them; electrically connecting a first end of a first grounding conductor to the metal inner armor; electrically connecting a first end of a second grounding wire to the metal sheath; Connecting the second optical fiber to the second cable lead port of the optical fiber splicing box and sealing and fixing it; connecting the first optical fiber and the second optical fiber; The second end of the first grounding wire and the second end of the second grounding wire are grounded.

10. The method of use according to claim 9, characterized in that: Connecting the first optical fiber and the second optical fiber comprises: cleaning the first optical fiber and the second optical fiber; fusing the first optical fiber and the second optical fiber; Test whether the first optical fiber and the second optical fiber are correctly connected.

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