OPGW ice melting cable joint box and joint device

Abstract

The present invention provides a joint box and a joint device for an OPGW ice-melting optical cable. The joint box of the OPGW ice-melting optical cable comprises an outer shell, on which a plurality of first cable entry ports are arranged at intervals, and a plurality of optical cables extend into the outer shell through the plurality of first cable entry ports; a support member is arranged in the outer shell, and the support member is used to support the optical cables in the outer shell; a current-carrying member is arranged on the support member, and the current-carrying member is configured to be electrically connected to the conductive layers of a plurality of optical cables; the support member comprises a mounting member; the support member is arranged on the mounting member, and the support member has a first side and a second side arranged oppositely, the first side is provided with a current-carrying member, and the second side is provided with a fiber splicing tray, and a plurality of limit parts are provided on the support member, and the limit parts are located between the first side and the second side, and each limit part has a limit channel. The technical solution of the present invention solves the problem that the interior of the OPGW joint box in the prior art is difficult to bear the ice-melting voltage and current.

Description

Technical Field

[0001] The present invention relates to the technical field of optical cables, and in particular to a joint box and a joint device for an OPGW ice-melting optical cable. Background Art

[0002] OPGW (Optical Fiber Composite Overhead Ground Wire) is an optical cable widely used in power systems. It has the functions of both communication channels and lightning arresters. It has been widely used in high-voltage transmission lines and is the main carrier mode for communication transmission in power systems. However, in recent years, rain, snow and freezing disasters have occurred continuously in my country, which has had a great impact on the OPGW ground line and posed a great hidden danger to the safety of the power grid. In general, OPGW is grounded to the tower by tower, that is, OPGW is connected to the tower pole, and it is impossible to melt the ice directly through current, so OPGW needs to be insulated. After OPGW is insulated, not only the construction cost is increased (the cost of construction materials is increased by 10,000 yuan / kilometer by measuring), but also the construction requirements are increased. Moreover, after OPGW is insulated, it will bring difficulties and safety hazards to the later line operation and maintenance.

[0003] OPGW optical cable manufacturers have developed self-melting OPGW, that is, an insulating layer is set inside the OPGW, that is, the conductor and the outer aluminum-clad steel monofilament are insulated, and the OPGW can be de-iced by passing current through the conductive layer to generate heat and transfer the heat to the outer layer of the OPGW. In this way, when the tower-by-tower grounding method is adopted, the OPGW optical cable can be de-iced without insulating the OPGW. However, in the prior art, the OPGW junction box is only used to perform traditional sealing, mechanical and optical fiber functions for connecting multiple sections of composite overhead ground wires. The interior of the OPGW junction box is difficult to bear the role of melting ice voltage and current carrying. In this way, it is difficult to conduct electricity to connect the conductive layers of multiple composite overhead ground wires and form a conductive path, thereby making it difficult to remove ice and snow on the OPGW optical cable in time. Summary of the invention

[0004] The main purpose of the present invention is to provide a joint box and a joint device for an OPGW ice-melting optical cable, so as to solve the problem that the interior of the OPGW joint box in the prior art is difficult to bear the ice-melting voltage and current.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a junction box for an OPGW ice-melting optical cable, the junction box for the OPGW ice-melting optical cable comprises an outer shell, a plurality of first cable entry ports arranged at intervals are provided on the outer shell, and a plurality of optical cables extend into the outer shell through the plurality of first cable entry ports; a supporting member is arranged in the outer shell, the supporting member is used to support the optical cables in the outer shell, and the supporting member is made of insulating material; a current-carrying member is arranged on the supporting member, the current-carrying member is made of conductive material, and the current-carrying member is configured to be electrically connected to the conductive layers of a plurality of optical cables; the supporting member comprises a mounting member; a supporting member, the supporting member is arranged on the mounting member, the supporting member has a first side and a second side arranged opposite to each other, the first side is provided with a current-carrying member, and the second side is provided with a fiber splicing tray, a plurality of limiting parts are provided on the supporting member, the limiting part is located between the first side and the second side, each limiting part has a limiting channel, and the plurality of limiting channels are arranged corresponding to the plurality of first cable entry ports.

[0006] Furthermore, a plurality of clamping cavities are provided on the current-carrying component, and the plurality of clamping cavities are arranged corresponding to the plurality of first cable entry ports.

[0007] Furthermore, the current-carrying component includes a first clamping member, which is provided with a first groove; a second clamping member, which is provided with a second groove, and multiple second grooves are arranged corresponding to multiple first grooves, and each second groove and the corresponding first groove form a clamping cavity; a first connecting member, which is used to connect the first clamping member and the second clamping member.

[0008] Furthermore, the current-carrying component includes a second connecting member, which has a plurality of through holes; a plurality of annular contact fingers, each of which has a plurality of annular contact fingers, the second connecting member is electrically connected to the plurality of annular contact fingers, a clamping chamber is formed in the annular contact fingers, and the plurality of annular contact fingers are spaced apart along the axial direction of the through hole.

[0009] Furthermore, the current-carrying component also includes a plurality of mounting tubes, which are correspondingly installed in the plurality of through holes, and the inner wall of each mounting tube is provided with a plurality of annular limiting grooves, the outer end of each annular contact finger is located in each annular limiting groove, and the inner end of each annular contact finger protrudes from each annular limiting groove, and the plurality of annular contact fingers are electrically connected to the second connecting member through the plurality of mounting tubes.

[0010] Furthermore, the limiting portion includes a plurality of first limiting plates and a plurality of second limiting plates for forming the limiting channels, and the first limiting plates and the second limiting plates are alternately arranged along the extending direction of the optical cable.

[0011] Furthermore, at least part of the mounting member is provided with a plurality of umbrella-like structures, and the plurality of umbrella-like structures are arranged at intervals along the axial direction of the mounting member.

[0012] Furthermore, the housing includes a base and a cap barrel, the base is connected to the cap barrel, the support member is arranged on the base, a plurality of first cable entry ports are arranged on the base, and the support member and the current-carrying member are located inside the cap barrel.

[0013] Furthermore, an annular groove is provided on the base, and the junction box of the OPGW ice-melting optical cable also includes: a sealing ring, which is located between the cap barrel and the base, and is used to seal the connection between the cap barrel and the base; an annular seal, which is located in the annular groove, and along the radial direction of the cap barrel, the annular seal is located on the outside of the sealing ring, and is used to seal the connection between the cap barrel and the base.

[0014] Furthermore, the OPGW ice-melting optical cable joint device also includes a plurality of insulating sleeves, each of which is arranged on the base, each of which is located between the base and the current-carrying component, and the plurality of insulating sleeves are arranged corresponding to the plurality of first cable entry ports, and each insulating sleeve includes: a main body; a plurality of umbrella-shaped members connected to the outer periphery of the main body, and the plurality of umbrella-shaped members are arranged at intervals along the axial direction of the main body.

[0015] Furthermore, the base is made of a metal material; and / or the cap tube is made of a non-metal material.

[0016] According to another aspect of the present invention, the present invention provides a joint device, including an optical cable clamp and the above-mentioned joint box of the OPGW ice-melting optical cable, and the optical cable clamp is connected to the joint box of the OPGW ice-melting optical cable.

[0017] Furthermore, the optical cable clamp includes a third connecting member connected to the base, the third connecting member is provided with a plurality of second cable entry ports arranged at intervals, and the plurality of second cable entry ports are arranged corresponding to the plurality of first cable entry ports; a fourth connecting member, the fourth connecting member includes a first plate segment, a second plate segment and a third plate segment connected in sequence and arranged at an angle to enclose a clamping space, the first plate segment is connected to the base, and the third plate segment is connected to the third connecting member.

[0018] By applying the technical solution of the present invention, a current-carrying component is provided, and the current-carrying component is electrically connected to the conductive layers of multiple optical cables. In this way, by energizing the conductive layer of one of the multiple optical cables, current can flow from one of the multiple optical cables through the current-carrying component to the remaining optical cables of the multiple optical cables, so as to connect the multiple optical cables. The junction box of the OPGW ice-melting optical cable can not only bear the role of current carrying, but also the conductive layers of the multiple optical cables can have current flowing through. In this way, a conductive path can be formed, and the periphery of the conductive layer of the optical cable through which the current flows will generate heat, thereby melting the ice and snow covering the optical cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic structural diagram of an embodiment of a connector device of the present invention is shown;

[0021] Figure 2 Shows Figure 1 A schematic diagram of the internal structure of an embodiment of a connector device (wherein the cap barrel is not shown);

[0022] Figure 3 Shows Figure 2 A schematic structural diagram of the connector device from another perspective (wherein the current-carrying member in the first embodiment is shown);

[0023] Figure 4 Shows Figure 3 Another perspective structural diagram of the OPGW ice-melting optical cable joint box of the joint device;

[0024] Figure 5 Shows Figure 4 A partial cross-sectional view of the joint box of the OPGW ice-melting optical cable;

[0025] Figure 6 Shows Figure 4 A top view of the OPGW ice-melting cable's splice box;

[0026] Figure 7 Shows Figure 4 A schematic diagram of the structure of the insulating sleeve of the joint box of the OPGW ice-melting optical cable;

[0027] Figure 8 Shows Figure 4 A structural schematic diagram of a support member of a joint box of an OPGW ice-melting optical cable from one perspective;

[0028] Fig. 9 Shows Figure 8 A structural schematic diagram of another perspective of the supporting member;

[0029] Fig.10 Shows Figure 8 A front view of the supporting member;

[0030] Fig.11 Shows Figure 8 a rear view of the supporting member;

[0031] Fig.12 A schematic structural diagram of an embodiment of the OPGW optical cable of the present invention is shown;

[0032] Fig.13 Shows Figure 1 A structural schematic diagram of embodiment 2 of the current-carrying component of the connector device.

[0033] The above drawings include the following reference numerals:

[0034] 1. Base; 2. Optical cable clamp; 21. Third connecting piece; 22. Fourth connecting piece; 221. First plate section; 222. Second plate section; 223. Third plate section; 3. Cap tube; 4. Optical cable; 41. Outer load-bearing monofilament layer; 42. Metal sheath; 43. Insulating layer; 44. Conductive layer; 45. Optical fiber unit; 46. Optical fiber; 5. Splice tray; 6. Insulating sleeve; 61. Main body; 62. Umbrella-shaped piece; 7. Support member; 71. Mounting seat; 72. Umbrella-shaped structure; 73. Support member; 74. Block; 81. Mounting tube; 82. Annular limit groove; 83. Annular contact finger; 9. Sealing ring; 10. Annular sealing piece; 11. Current-carrying member; 113. First connecting piece; 12. First limit plate; 13. Second limit plate. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] It should be noted that if Fig.12 As shown, in the embodiment of the present invention, the optical cable 4 includes an outer load-bearing monofilament layer 41 , a metal sheath 42 , an insulating layer 43 , a conductive layer 44 and an optical fiber unit 45 which are sequentially sleeved, wherein the optical fiber unit 45 includes a plurality of optical fibers 46 .

[0037] Specifically, in the embodiment of the present invention, the outer load-bearing monofilament layer 41 is an outer aluminum-clad steel monofilament.

[0038] Specifically, in the embodiments of the present invention, Fig.12 As shown, since the outermost layer of the optical cable 4 is the outer load-bearing monofilament layer 41, which is composed of multiple monofilaments and cannot be sealed, it is necessary to peel off the outer load-bearing monofilament layer 41, pass each optical cable 4 through each second cable entry port and fix it in the optical cable clamp 2, and place the conical sealing plug, sealing gasket and sealing nut on the inner wall surface of the first cable entry port of each optical cable 4 in sequence to seal the outer wall of the metal sheath 42 of each optical cable 4. An insulating sleeve 6 is provided on the outer shell of the insulating layer 43 of each optical cable 4 to further increase the creepage distance, and each clamping cavity of the current-carrying member 11 clamps the conductive layer 44 of each optical cable 4 to conduct the electrical performance of the conductive layer 44 of the optical cable 4. After the conductive layer 44 is fixed, an optical fiber protection tube is placed on the outer shell of the optical fiber unit 45, and the optical fiber protection tube is limited in the limiting part of the supporting member 7 and enters the fiber splicing tray 5 to perform the fusion splicing and winding of the optical fiber 46.

[0039] like Figure 3 , Figure 4 and Figure 6As shown, the present invention provides a joint box for an OPGW ice-melting optical cable. The joint box for the OPGW ice-melting optical cable comprises an outer shell, on which a plurality of first cable entry ports are arranged at intervals, and a plurality of optical cables 4 extend into the outer shell through the plurality of first cable entry ports; a support member 7 is arranged in the outer shell, and the support member 7 is used to support the optical cables 4 in the outer shell, and the support member 7 is made of an insulating material; a current-carrying member 11 is arranged on the support member 7, and the current-carrying member 11 is made of a conductive material, and the current-carrying member 11 is configured to be electrically connected to the conductive layers of the plurality of optical cables 4.

[0040] In the above technical solution, a current-carrying component 11 is provided, and the current-carrying component 11 is electrically connected to the conductive layers of multiple optical cables 4. In this way, by energizing the conductive layer of one of the multiple optical cables 4, current can flow from one of the multiple optical cables 4 through the current-carrying component 11 to the remaining optical cables 4 of the multiple optical cables 4, so as to conduct the multiple optical cables 4. The junction box of the OPGW ice-melting optical cable can not only bear the role of ice-melting voltage and current carrying, but also the conductive layers of the multiple optical cables 4 can have current flowing through. In this way, a conductive path can be formed, and the periphery of the conductive layer of the optical cable 4 through which the current flows will generate heat, thereby melting the ice and snow covering the optical cable 4.

[0041] Preferably, in the embodiment of the present invention, the number of optical cables 4 is two, the number of first cable entry ports is also two, and each optical cable 4 enters the interior of the OPGW ice-melting optical cable junction box through the corresponding first cable entry port.

[0042] Specifically, in the embodiment of the present invention, the material of the supporting member 7 can be one of rubber, plastic and ceramic.

[0043] Specifically, in the embodiment of the present invention, the material of the current-carrying component 11 is metal, such as copper.

[0044] Specifically, in an embodiment of the present invention, the flow path of the conductive path is: the current flows from one of the two optical cables 4 through the power station to the current-carrying component 11, then flows from the current-carrying component 11 to the other optical cable 4 of the two optical cables 4, and finally flows from the other optical cable 4 to another power station or electricity user.

[0045] like Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 8 , Fig. 9 and Fig.10As shown, in the embodiment of the present invention, the support member 7 includes: a mounting member; a support member 73, the support member 73 is arranged on the mounting member, the support member 73 has a first side and a second side arranged opposite to each other, the first side is provided with a current-carrying member 11, the second side is provided with a fiber splicing tray 5, the support member 73 is provided with a plurality of limiting portions, the limiting portion is located between the first side and the second side, each limiting portion has a limiting channel, and the plurality of limiting channels are arranged corresponding to the plurality of first cable entry ports.

[0046] Through the above arrangement, multiple optical cables 4 enter into multiple limiting channels through multiple first cable entry ports respectively, so that the limiting portion can limit the optical cables 4 to facilitate subsequent connection of multiple optical cables 4.

[0047] Specifically, in an embodiment of the present invention, the fiber splicing tray 5 is fixedly connected to the supporting member 7, and a heat shrink tube is provided at the fusion point of the two optical cables 4 to be connected to protect the optical fiber. The specific structure of the fiber splicing tray 5 can refer to the prior art and will not be repeated here.

[0048] Specifically, in an embodiment of the present invention, the support member 73 is a support plate, a plurality of blocks 74 are provided on the first side of the support member 73, a plurality of slots are provided on the current-carrying component 11, and the plurality of blocks and the plurality of slots are correspondingly engaged to connect the current-carrying component 11 with the support member 7.

[0049] Preferably, in an embodiment of the present invention, there are two limiting parts.

[0050] like Figure 8 As shown, in an embodiment of the present invention, the limiting portion includes a plurality of first limiting plates 12 and a plurality of second limiting plates 13 for forming limiting channels, and along the extension direction of the optical cable 4, the first limiting plates 12 and the second limiting plates 13 are alternately arranged.

[0051] In the above technical solution, the alternating arrangement of the first limiting plate 12 and the second limiting plate 13 can form a limiting channel, and each optical cable 4 can be fixed in the supporting member 7 through the corresponding first cable entry port through the first limiting plate 12 and the second limiting plate 13, thereby limiting the optical cable 4.

[0052] Specifically, Figure 8 As shown, in the embodiment of the present invention, the first limiting plate 12 and the plurality of second limiting plates 13 each include a first plate segment and a second plate segment that are arranged at an angle, the first plate segment of the first limiting plate 12 is connected to the first side of the support member 73, the second plate segment of the first limiting plate 12 is arranged toward the limiting channel, the first plate segment of the second limiting plate 13 is connected to the second side of the support member 73, and the second plate segment of the second limiting plate 13 is arranged toward the limiting channel.

[0053] like Figures 1 to 6As shown, in an embodiment of the present invention, the outer shell includes a base 1 and a cap barrel 3, the base 1 is connected to the cap barrel 3, the support member 7 is arranged on the base 1, the base 1 is provided with a plurality of first cable entry ports, and the support member 7 and the current-carrying member 11 are located in the cap barrel 3.

[0054] Through the above arrangement, on the one hand, the multiple first cable entry ports of the base 1 can fix multiple optical cables 4, and the multiple optical cables 4 can be connected on the fiber splicing tray 5 after passing through multiple limiting channels from the multiple first cable entry ports; on the other hand, the cap tube 3 can achieve physical isolation between the internal space and the external space of the junction box of the OPGW ice-melting optical cable, thereby protecting the internal components of the junction box of the OPGW ice-melting optical cable to avoid the internal components being affected by external environmental factors. In this way, the service life of the junction box of the OPGW ice-melting optical cable can be extended.

[0055] like Figure 3 , Figure 4 , Figure 6 , Figure 8 , Fig. 9 , Fig.10 ,and Fig.11 As shown, in the embodiment of the present invention, a plurality of umbrella-like structures 72 are provided on at least part of the mounting member, and the plurality of umbrella-like structures 72 are arranged at intervals along the axial direction of the mounting member.

[0056] Through the above arrangement, when the base 1 is made of metal material, the plurality of umbrella-shaped structures 72 can increase the creepage distance, so that the metal base 1 and the current-carrying component 11 can be prevented from being broken down by current.

[0057] Specifically, in the embodiment of the present invention, the umbrella-like structure 72 is an umbrella skirt.

[0058] Specifically, in the embodiment of the present invention, the inner wall of the first cable entrance and the outer wall of the conductive layer 44 of the optical cable 4 are sealed by a conical sealing plug.

[0059] Specifically, in the embodiment of the present invention, the mounting member further includes a mounting seat 71 and a support column, a plurality of umbrella-shaped structures 72 are provided on the support column, the mounting seat 71 is connected to the base 1, and the support member 73 is connected to the support column.

[0060] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, in the embodiment of the present invention, an annular groove is provided on the base 1, and the junction box of the OPGW ice-melting optical cable also includes: a sealing ring 9, the sealing ring 9 is located between the cap barrel 3 and the base 1, and the sealing ring 9 is used to seal the connection between the cap barrel 3 and the base 1; an annular seal 10, the annular seal 10 is located in the annular groove, along the radial direction of the cap barrel 3, the annular seal 10 is located on the outside of the sealing ring 9, and the annular seal 10 is used to seal the connection between the cap barrel 3 and the base 1.

[0061] In the above technical solution, by providing a double sealing structure of a sealing ring 9 and an annular sealing member 10, the cap barrel 3 and the base 1 can be sealed, so that the sealing performance of the joint box of the OPGW ice-melting optical cable can be improved.

[0062] Specifically, in the embodiment of the present invention, the depth of the annular groove is less than the height of the annular seal 10 (the annular seal 10 is Figure 5 In this way, the annular seal 10 can be pressed tightly into the annular groove, so that the cap tube 3 and the base 1 are sealed by the annular seal 10.

[0063] Specifically, in the embodiment of the present invention, the sealing ring 9 is an O-ring, and the annular sealing member 10 is a flat gasket.

[0064] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 As shown, in an embodiment of the present invention, the OPGW ice-melting optical cable junction box also includes a plurality of insulating sleeves 6, each of which is arranged on the base 1, and each of the insulating sleeves 6 is located between the base 1 and the current-carrying component 11. The plurality of insulating sleeves 6 are arranged corresponding to the plurality of first cable entry ports, and each of the insulating sleeves 6 includes a main body 61; a plurality of umbrella-shaped members 62 are located on the outer periphery of the main body 61, and the plurality of umbrella-shaped members 62 are arranged at intervals along the axial direction of the main body 61.

[0065] In the above technical solution, by setting a plurality of umbrella-shaped members 62, the creepage distance can be further increased to avoid the phenomenon of insufficient creepage distance of the optical cable 4, thereby improving the electrical insulation performance, and when the base 1 is made of metal material, it can avoid the current breakdown between the metal base 1 and the current-carrying component 11, thus, the safety of the junction box of the OPGW de-ice optical cable during the de-ice operation can be improved.

[0066] Specifically, in the embodiment of the present invention, insulating lubricating oil may be applied to the insulating layer 43 of the optical cable 4 before installation, so that the installation can be more convenient.

[0067] like Figures 1 to 7As shown, in the embodiment of the present invention, the base 1 is made of metal material, and / or the cap tube 3 is made of non-metal material.

[0068] Through the above-mentioned arrangement, on the one hand, the base 1 can have a higher bearing capacity; on the other hand, in a high-voltage power environment, the non-metallic cap tube 3 can effectively prevent an electrical short circuit between the internal charged body (the conductive layer of the optical cable 4) and the external metal structure (such as a tower) of the OPGW ice-melting optical cable's junction box, thereby improving the overall electrical safety of the OPGW ice-melting optical cable's junction box.

[0069] Specifically, in an embodiment of the present invention, the insulating sleeve 6 is made of an elastic material, and the inner diameter of the insulating sleeve 6 is D; the diameter of the insulating layer 43 of the optical cable 4 is d, and D is smaller than d. Since the insulating sleeve 6 has a certain elasticity, the insulating sleeve 6 can be sleeved on the outer periphery of the insulating layer 43.

[0070] Preferably, in the embodiment of the present invention, the insulating sleeve 6 is made of silicone material.

[0071] Specifically, in the embodiment of the present invention, since the base 1 is made of metal material, the current-carrying component 11 is also made of metal material, and the current-carrying component 11 carries current, by providing the insulating sleeve 6, the creepage distance can be increased, thereby improving the insulation effect.

[0072] Specifically, in the embodiment of the present invention, the cap barrel 3 is made of SMC (Sheet Molding Compound), and the strength of the sheet molding compound is similar to that of the aluminum barrel cap, and the strength can reach more than 100 MPa.

[0073] In one embodiment, the base 1 is made of non-metallic material.

[0074] like Figure 4 As shown, in the embodiment of the present invention, a plurality of clamping cavities are provided on the current-carrying member 11, and the plurality of clamping cavities are arranged corresponding to the plurality of first cable entry ports.

[0075] In the above technical solution, by arranging a clamping cavity on the current-carrying component 11, each optical cable 4 can enter the corresponding clamping cavity through the corresponding first cable entry port and fit tightly with the inner wall of the corresponding clamping cavity, thereby realizing electrical connection between multiple optical cables 4 and the current-carrying component 11. By energizing the conductive layer of one of the multiple optical cables 4, the current can flow from this optical cable 4 through the current-carrying component 11 to the remaining optical cables 4 to form a conductive channel. In this way, the junction box of the OPGW ice-melting optical cable can assume the role of current carrying, thereby melting the ice on multiple optical cables 4.

[0076] Preferably, in an embodiment of the present invention, there are two clamping cavities.

[0077] Embodiment 1

[0078] like Figure 3 and Figure 4 As shown, in the first embodiment of the present invention, the current-carrying component 11 includes: a first clamping member, on which a first groove is provided; a second clamping member, on which a second groove is provided, a plurality of second grooves are arranged corresponding to a plurality of first grooves, and each second groove and the corresponding first groove form a clamping cavity; a first connecting member 113, for connecting the first clamping member and the second clamping member.

[0079] Through the above arrangement, the first groove of the first clamping member and the second groove of the second clamping member can be connected to each other correspondingly, so as to form a clamping cavity, so that the conductive layer 44 of the optical cable 4 can fit tightly with the inner wall of the clamping cavity, and by energizing the conductive layer of the optical cable 4, the conductive layer of the optical cable 4 transfers the current to the current-carrying component 11, and transfers the current-carrying component 11 to the conductive layers 44 of the remaining optical cables 4 that are not energized. In this way, the junction box of the OPGW ice-melting optical cable can assume the role of current carrying, so that multiple optical cables 4 can be melted.

[0080] Specifically, in the first embodiment of the present invention, there are two first connecting members 113, and the first connecting member 113 is a bolt. The first clamping member and the second clamping member have good current-carrying performance after being locked by the first connecting member 113, and when a large current is passed during ice melting, the first clamping member and the second clamping member are both clamping blocks. In this way, the temperature of the current-carrying component 11 is much lower than the temperature of the conductive layer 44 of the optical cable 4.

[0081] Specifically, in the first embodiment of the present invention, both the first groove and the second groove are arc-shaped grooves, and the shape of the clamping cavity formed by the two arc-shaped grooves is adapted to the arc-shaped surface of the conductive layer 44 of the optical cable 4 .

[0082] Embodiment 2

[0083] The difference between the second embodiment and the first embodiment is that the specific structure of the current-carrying component 11 is different. Fig.13 As shown, the current-carrying component 11 includes a second connecting member, in which a plurality of through holes are provided; a plurality of annular contact fingers 83, each of which is provided with a plurality of annular contact fingers 83, the second connecting member is electrically connected to the plurality of annular contact fingers 83, a clamping chamber is formed in the annular contact fingers 83, and the plurality of annular contact fingers 83 are spaced apart along the axial direction of the through hole.

[0084] Through the above arrangement, the annular contact finger 83 can be clamped on the outer periphery of the conductive layer 44 of the optical cable 4, and the conductive layer 44 of the optical cable 4 can be in close contact with the inner wall of the annular contact finger 83, so that not only can the optical cable 4 be fixed in the clamping chamber, but also the conductive layer 44 of the optical cable 4 can be electrically connected to the annular contact finger 83. Since the second connecting piece is electrically connected to the plurality of annular contact fingers 83, the conductive layers 44 of the plurality of optical cables 4 can be electrically connected through the plurality of annular contact fingers 83 and the second connecting piece, so that after the conductive layer 44 of one of the plurality of optical cables 4 is energized, current can also flow through the conductive layers 44 of the remaining optical cables 4 in the plurality of optical cables 4. In this way, the junction box of the OPGW ice-melting optical cable can not only bear the role of current carrying, but also melt the ice and snow on the periphery of the plurality of optical cables 4.

[0085] Specifically, in the second embodiment of the present invention, the annular contact finger 83 is a spring contact finger.

[0086] like Fig.13 As shown, in the second embodiment of the present invention, the current-carrying component 11 also includes a plurality of mounting tubes 81, and the plurality of mounting tubes 81 are correspondingly mounted in the plurality of through holes. The inner wall of each mounting tube 81 is provided with a plurality of annular limiting grooves 82, the outer end of each annular contact finger 83 is located in each annular limiting groove 82, the inner end of each annular contact finger 83 protrudes from each annular limiting groove 82, and the plurality of annular contact fingers 83 are electrically connected to the second connecting member through the plurality of mounting tubes 81.

[0087] Through the above-mentioned arrangement, the annular contact finger 83 can provide multi-point contact, and can maintain good electrical contact even when the junction box of the OPGW ice-melting optical cable is subjected to vibration or slight displacement, thereby improving the stability of the electrical connection. The elastic properties of the annular contact finger 83 can adapt to conductors of different diameters to ensure reliable contact; and the inner end of the annular contact finger 83 protrudes from the annular limiting groove 82, which can form a stable electrical connection and reduce maintenance work caused by poor contact. The elasticity and self-locking properties of the annular contact finger 83 can maintain a good contact state for a long time, reducing the need for regular inspection and adjustment.

[0088] It should be noted that, in the embodiment of the present invention, the inner end of the annular contact finger 83 refers to the end of the annular contact finger 83 facing the axis of the through hole, and the outer end of the annular contact finger 83 refers to the end of the annular contact finger 83 away from the axis of the through hole.

[0089] The other structures of the second embodiment of the present invention are the same as those of the first embodiment and will not be described again here.

[0090] Specifically, in the embodiment of the present invention, the maximum withstand rated voltage designed by the present invention is 25kV, and the 1min power frequency withstand voltage is 45kV. A certain length of distance must be reserved for the insulation layer 43 of the optical cable 4. Since the junction box of the OPGW ice-melting optical cable is a closed space without the influence of outdoor factors such as rain, the insulation distance is greatly shortened compared to the outdoors.

[0091] Specifically, in the embodiment of the present invention, the ice-melting OPGW optical cable of the present invention realizes current carrying and electrical performance in the joint box of the OPGW ice-melting optical cable, and the ice-melting OPGW optical cable can realize ice melting when grounded tower by tower. It has been verified through experiments that the power frequency 1min withstand voltage can reach ±50kV, meeting the working requirement of ±25kV ice-melting voltage.

[0092] Specifically, in the embodiment of the present invention, in order to reduce the installation resistance of the insulating sleeve 6 , insulating oil is applied to the insulating layer 43 of the optical cable 4 .

[0093] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a joint device. The joint device comprises the above-mentioned joint box of the OPGW ice-melting optical cable and an optical cable clamp 2, and the optical cable clamp 2 is connected to the above-mentioned joint box of the OPGW ice-melting optical cable.

[0094] like Figure 1 As Figure 3 As shown, in the embodiment of the present invention, the optical cable clamp 2 includes a third connecting member 21, which is connected to the base 1, and the third connecting member 21 is provided with a plurality of second cable entry ports arranged at intervals, and the plurality of second cable entry ports are arranged corresponding to the plurality of first cable entry ports; the fourth connecting member 22, the fourth connecting member 22 includes a first plate segment 221, a second plate segment 222 and a third plate segment 223 which are connected and arranged at an angle to enclose a clamping space, the first plate segment 221 is connected to the base 1, and the third plate segment 223 is connected to the third connecting member 21.

[0095] In the above technical solution, on the one hand, multiple optical cables 4 enter the multiple limiting channels through the multiple second cable entry ports of the third connecting member 21 through the multiple first cable entry ports, and enter the fiber splicing tray 5 through the multiple limiting channels and are fused on the fiber splicing tray 5; on the other hand, by setting the fourth connecting member 22, the joint device can be connected to the pole tower.

[0096] Specifically, in the embodiment of the present invention, the number of the second cable entry ports is two, and the third connecting member 21 is connected to the base 1 by bolts.

[0097] Specifically, in an embodiment of the present invention, the first plate segment 221 of the fourth connecting member 22 is connected to the base 1 by bolts, the second plate segment 222 is provided with a mounting hole, and the joint device also includes a fixing clamp, which is provided with a mounting hole. By passing the bolts through the mounting holes on the second plate segment 222 and the mounting holes of the fixing clamp in sequence, the fixing clamp can be fixed to the second plate segment 222, thereby clamping the joint device on the pole tower using the fixing clamp.

[0098] Specifically, in the embodiment of the present invention, the specific structure of the optical cable clamp 2 can refer to the prior art and will not be described in detail here.

[0099] The above-mentioned joint device has all the advantages of the above-mentioned joint box of the OPGW ice-melting optical cable, which will not be described in detail here.

[0100] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: by providing a current-carrying component, and the current-carrying component is electrically connected to the conductive layers of multiple optical cables, so that by energizing the conductive layer of one of the multiple optical cables, the current can flow from one of the multiple optical cables through the current-carrying component to the remaining optical cables of the multiple optical cables, so as to connect the multiple optical cables to each other. The junction box of the OPGW ice-melting optical cable can not only bear the role of current carrying, but also the conductive layers of multiple optical cables can have current flowing through them. In this way, a conductive path can be formed, and the periphery of the conductive layer of the optical cable through which the current flows will generate heat, thereby melting the ice and snow covering the optical cable.

[0101] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A joint box for OPGW ice-melting optical cable, characterized in that: include: An outer shell, wherein the outer shell is provided with a plurality of first cable entry openings arranged at intervals, and a plurality of optical cables (4) extend into the outer shell through the plurality of first cable entry openings; A supporting member (7) is arranged in the housing, the supporting member (7) is used to support the optical cable (4) in the housing, and the supporting member (7) is made of an insulating material; a current-carrying member (11) disposed on the support member (7), the current-carrying member (11) being made of a conductive material, and the current-carrying member (11) being configured to be electrically connected to the conductive layers (44) of the plurality of optical cables (4); The support member (7) comprises a mounting member; a support member (73), the support member (73) being arranged on the mounting member, the support member (73) having a first side and a second side arranged opposite to each other, the first side being provided with the current-carrying member (11), the second side being provided with a fiber splicing tray (5), the support member (73) being provided with a plurality of limiting portions, the limiting portions being located between the first side and the second side, each limiting portion having a limiting channel, and the plurality of limiting channels being arranged corresponding to the plurality of first cable entry ports; The current-carrying component (11) is provided with a plurality of clamping cavities, and the plurality of clamping cavities are arranged corresponding to the plurality of first cable entry ports; The current-carrying component (11) comprises: a second connecting member, wherein a plurality of through holes are provided in the second connecting member; A plurality of annular contact fingers (83), each of the through holes being provided with a plurality of the annular contact fingers (83), the second connecting member being electrically connected to the plurality of the annular contact fingers (83), a clamping chamber being formed in the annular contact fingers (83), and the plurality of the annular contact fingers (83) being arranged at intervals along the axial direction of the through hole.

2. The OPGW ice-melting optical cable joint box according to claim 1, characterized in that: The current-carrying component (11) comprises: A first clamping member, wherein the first clamping member is provided with a first groove; A second clamping member, wherein the second clamping member is provided with a second groove, a plurality of the second grooves are arranged corresponding to a plurality of the first grooves, and each of the second grooves and the corresponding first groove form each of the clamping cavities; The first connecting member (113) is used to connect the first clamping member and the second clamping member.

3. The OPGW ice-melting optical cable joint box according to claim 1, characterized in that: The current-carrying component (11) further comprises a plurality of mounting tubes (81), the plurality of mounting tubes (81) being mounted in the plurality of through holes correspondingly, the inner wall of each mounting tube (81) being provided with a plurality of annular limiting grooves (82), the outer end of each annular contact finger (83) being located in each annular limiting groove (82), the inner end of each annular contact finger (83) protruding from each annular limiting groove (82), and the plurality of annular contact fingers (83) being electrically connected to the second connecting member via the plurality of mounting tubes (81).

4. The OPGW ice-melting optical cable joint box according to any one of claims 1 to 3, characterized in that: The limiting portion comprises a plurality of first limiting plates (12) and a plurality of second limiting plates (13) for forming the limiting channel, and the first limiting plates (12) and the second limiting plates (13) are arranged alternately along the extension direction of the optical cable (4).

5. The OPGW ice-melting optical cable joint box according to any one of claims 1 to 3, characterized in that: At least part of the mounting member is provided with a plurality of umbrella-shaped structures (72), and along the axis direction of the mounting member, the plurality of umbrella-shaped structures (72) are arranged at intervals.

6. The OPGW ice-melting optical cable joint box according to any one of claims 1 to 3, characterized in that: The housing comprises a base (1) and a cap barrel (3); the base (1) is connected to the cap barrel (3); the support member (7) is arranged on the base (1); a plurality of the first cable entry ports are arranged on the base (1); and the support member (7) and the current-carrying member (11) are located inside the cap barrel (3).

7. The OPGW ice-melting optical cable joint box according to claim 6, characterized in that: The base (1) is provided with an annular groove, and the OPGW ice-melting optical cable joint box further comprises: A sealing ring (9), the sealing ring (9) being located between the cap barrel (3) and the base (1), the sealing ring (9) being used to seal the cap barrel (3) and the base (1); An annular seal (10), the annular seal (10) being located in the annular groove and being located outside the sealing ring (9) along the radial direction of the cap barrel (3). The annular seal (10) is used to seal and connect the cap barrel (3) and the base (1).

8. The OPGW ice-melting optical cable joint box according to claim 6, characterized in that: The OPGW ice-melting optical cable joint device further comprises a plurality of insulating sleeves (6), each of the insulating sleeves (6) being arranged on the base (1), each of the insulating sleeves (6) being located between the base (1) and the current-carrying component (11), the plurality of insulating sleeves (6) being arranged corresponding to the plurality of first cable entry ports, and each of the insulating sleeves (6) comprising: Subject (61); A plurality of umbrella-shaped members (62) are connected to the outer periphery of the main body (61), and the plurality of umbrella-shaped members (62) are arranged at intervals along the axial direction of the main body (61).

9. The OPGW ice-melting optical cable joint box according to claim 6, characterized in that: The base (1) is made of a metal material; and / or the cap tube (3) is made of a non-metal material.

10. A joint device, characterized in that: It comprises an optical cable clamp (2) and a joint box of an OPGW ice-melting optical cable according to any one of claims 1 to 9, wherein the optical cable clamp (2) is connected to the joint box of the OPGW ice-melting optical cable.

11. The connector device according to claim 10, characterized in that: The optical cable clamp (2) comprises: a third connecting member (21) connected to the base (1), the third connecting member (21) being provided with a plurality of second cable entry openings arranged at intervals, the plurality of second cable entry openings being arranged corresponding to the plurality of first cable entry openings; A fourth connecting member (22), the fourth connecting member (22) comprising a first plate segment (221), a second plate segment (222) and a third plate segment (223) which are connected in sequence and arranged at an angle to enclose a clamping space, the first plate segment (221) being connected to the base (1), and the third plate segment (223) being connected to the third connecting member (21).

Images