Submarine cable connection box

Abstract

The utility model provides a submarine cable connection box. The submarine cable connection box provided by the utility model comprises a connection box body, reinforcing assemblies and a sealing assembly, the reinforcing assemblies are arranged on two opposite sides of the connection box body, and each reinforcing assembly comprises a fixed seat, a first connection sleeve and a second connection sleeve; the fixing seat is fixedly connected to one side of the connection box body, the first connecting sleeve is connected to the fixing seat, the fixing seat is provided with a first mounting hole, the first connecting sleeve is provided with a second mounting hole, the first mounting hole is communicated with the interior of the connection box body, and the first mounting hole is communicated with the second mounting hole. The first mounting hole and the second mounting hole form a channel for a cable core of a submarine cable to penetrate into the connection box body. The first connecting sleeve is sleeved with the second connecting sleeve, one end of the second connecting sleeve is connected to the fixing base, and a gap with the adjustable width is formed between the first connecting sleeve and the second connecting sleeve. The utility model provides a submarine cable connection box which can prevent continuous discharge of induced current and protect an optical unit.

Description

Technical Field

[0001] The utility model relates to the field of submarine cables, in particular to a submarine cable splicing box. Background Art

[0002] With the growth of global communication and energy demand, submarine optical cables have been widely used as an important medium for information and power transmission. Submarine cable splicing boxes are key components in submarine optical cable systems, used to connect and protect the joints of submarine cables.

[0003] The structure of an existing submarine cable splicing box generally includes an outer shell, a sealing structure, a splicing cavity, and a conductor connecting part, among which the outer shell is used to protect internal components, the sealing structure can prevent seawater from entering, the splicing cavity is used for the installation and connection of the submarine cable joint, and the conductor connecting part ensures the connection of the conductor. These structures work together to enable the submarine cable splicing box to work stably in the marine environment and ensure the reliable connection and transmission of the submarine cable system.

[0004] However, the existing submarine cable splicing box is prone to continuous discharge of induced current, which may cause the optical unit to fail. Utility Model Content

[0005] In order to solve at least one of the problems mentioned in the background technology, the utility model provides a submarine cable splicing box, which can prevent the continuous discharge of the induced current and protect the optical unit.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a submarine cable splicing box, comprising a splicing box body, a reinforcement component and a sealing component, wherein the reinforcement component is arranged on two opposite sides of the splicing box body, and the reinforcement component comprises a fixing seat, a first connecting sleeve and a second connecting sleeve;

[0008] The fixing seat is fixedly connected to one side of the splicing box body, the first connecting sleeve is connected to the fixing seat, the fixing seat has a first mounting hole, the first connecting sleeve has a second mounting hole, the first mounting hole is connected to the inside of the splicing box body, the first mounting hole and the second mounting hole are connected, and the first mounting hole and the second mounting hole form a channel for the cable core of the submarine cable to pass through the splicing box body;

[0009] The second connecting sleeve is arranged outside the first connecting sleeve, and one end of the second connecting sleeve is connected to the fixing seat, and a gap with adjustable width is formed between the first connecting sleeve and the second connecting sleeve to clamp the armor layer of the submarine cable through the gap;

[0010] The sealing component is arranged between the reinforcement component and the submarine cable, and is used to seal the gap between the reinforcement component and the submarine cable.

[0011] As an optional embodiment, the outer wall of the first connecting sleeve includes a first conical surface, the inner wall of the second connecting sleeve includes a second conical surface, and a gap is formed between the first conical surface and the second conical surface. The width of the gap changes with the change of the relative position of the first connecting sleeve and the second connecting sleeve along the axial direction of the second mounting hole.

[0012] As an optional implementation, the diameters of the first conical surface and the second conical surface decrease in a direction away from the fixing seat.

[0013] As an optional embodiment, the reinforcement assembly further includes a threaded connector, which is connected between the second connecting sleeve and the fixing seat, and is used to adjust the relative positions of the first connecting sleeve and the second connecting sleeve along the axial direction of the second mounting hole.

[0014] As an optional implementation, one end of the fixing seat away from the connection box body has a slot, and one end of the first connecting sleeve is snapped into the slot.

[0015] As an optional embodiment, the sealing assembly includes a first sealing member, which is configured to be disposed between the second connecting sleeve and the submarine cable, and the first sealing member is disposed at an end of the second connecting sleeve away from the fixing seat.

[0016] As an optional embodiment, the outer wall of the first sealing member includes a third conical surface, the inner wall of the second connecting sleeve includes a fourth conical surface, and the diameters of the third conical surface and the fourth conical surface decrease in a direction approaching the fixed seat, and the third conical surface and the fourth conical surface abut against each other to seal the gap between the second connecting sleeve and the submarine cable.

[0017] As an optional embodiment, the first sealing member is configured to extend from a side of the second connecting sleeve away from the fixed seat, and the outer wall of the end of the second connecting sleeve away from the fixed seat has an external thread. The reinforcement assembly also includes a fastening nut, which has a central hole for the submarine cable to pass through. The fastening nut is threadedly connected to the external thread on the second connecting sleeve, and the fastening nut abuts against the end of the first sealing member extending out of the second connecting sleeve.

[0018] As an optional embodiment, the sealing assembly further includes a second sealing member, and the second sealing member is configured to be arranged between the inner wall of the fixing seat and the submarine cable.

[0019] As an optional embodiment, the reinforcement assembly also includes a clamping sleeve, which is configured to be sleeved outside the submarine cable, and the clamping sleeve is arranged at the end of the fastening nut facing away from the second connecting sleeve, and the clamping sleeve includes two arc-shaped clips, and the two clips are connected by bolts so that the two clips can clamp the submarine cable by adjusting the bolts.

[0020] The utility model provides a submarine cable splicing box comprising a splicing box body, a reinforcement component and a sealing component, wherein the reinforcement component is arranged on opposite sides of the splicing box body, and the reinforcement component comprises a fixing seat, a first connecting sleeve and a second connecting sleeve; the fixing seat is fixedly connected to one side of the splicing box body, the first connecting sleeve is connected to the fixing seat, the fixing seat has a first mounting hole, the first connecting sleeve has a second mounting hole, the first mounting hole is communicated with the inside of the splicing box body, the first mounting hole and the second mounting hole are communicated, and the first mounting hole and the second mounting hole form a channel for the cable core of the submarine cable to penetrate into the splicing box body; the second connecting sleeve is arranged outside the first connecting sleeve, and one end of the second connecting sleeve is connected to the fixing seat, and a gap with adjustable width is formed between the first connecting sleeve and the second connecting sleeve to clamp the armor layer of the submarine cable through the gap; the sealing component is arranged between the reinforcement component and the submarine cable, and the sealing component is used to seal the gap between the reinforcement component and the submarine cable.

[0021] The submarine cable splicing box provided by the utility model has a structure for clamping the armored metal layer of the submarine cable on both sides of the splicing box body. When splicing the submarine cable, the cable cores of the submarine cables on both sides of the splicing box can be respectively inserted into the interior of the splicing box along the second mounting hole and the first mounting hole for splicing, so that the armored metal layer of the submarine cable can be clamped in the gap formed by the first connecting sleeve and the second connecting sleeve, and the armored metal layer can be clamped by adjusting the width of the gap, so that the electrical connection of the submarine cables on both sides of the splicing box can be achieved, and the induced current generated in the splicing box can be grounded, so that the induced current is avoided from gathering in the splicing box to damage the optical unit, and the optical unit is effectively protected. In addition, by reinforcing the connection of the armored metal layer of the submarine cable, the overall connection strength of the submarine cable splicing can also be improved to prevent the splicing from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 A schematic diagram of the overall structure of a submarine cable splicing box provided by an embodiment of the utility model;

[0024] Figure 2 A partially enlarged schematic diagram of a submarine cable splicing box provided in an embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 100-connection box;

[0027] 110-connection box body;

[0028] 120-reinforcement components;

[0029] 121-fixed seat;

[0030] 122-first connecting sleeve;

[0031] 123- second connecting sleeve;

[0032] 124-gap;

[0033] 125-threaded connector;

[0034] 126-fastening nut;

[0035] 127-clamping sleeve;

[0036] 130- sealing assembly;

[0037] 131- first sealing member;

[0038] 132 - second sealing member;

[0039] 200-submarine cable. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] In the application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0042] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0043] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0044] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0045] The structure of an existing submarine cable splicing box generally includes an outer shell, a sealing structure, a splicing cavity, and a conductor connecting part, wherein the outer shell is used to protect internal components, the sealing structure prevents seawater from entering, the splicing cavity is used for the installation and connection of the submarine cable joint, and the conductor connecting part ensures the connection of the conductor. These structures work together to enable the submarine cable splicing box to work stably in the marine environment and ensure the reliable connection and transmission of the submarine cable system. However, the existing submarine cable splicing box is prone to continuous discharge of induced current, which may cause the optical unit to fail.

[0046] In view of this, the utility model provides a submarine cable splicing box, comprising a splicing box body, a reinforcement component and a sealing component, the reinforcement component is arranged on opposite sides of the splicing box body, the reinforcement component comprises a fixing seat, a first connecting sleeve and a second connecting sleeve; the fixing seat is fixedly connected to one side of the splicing box body, the first connecting sleeve is connected to the fixing seat, the fixing seat has a first mounting hole, the first connecting sleeve has a second mounting hole, the first mounting hole is communicated with the inside of the splicing box body, and the first mounting hole and the second mounting hole are communicated; the second connecting sleeve is arranged outside the first connecting sleeve, and one end of the second connecting sleeve is connected to the fixing seat, and a gap with adjustable width is formed between the first connecting sleeve and the second connecting sleeve to clamp the submarine cable through the gap. Armor layer, when connecting the submarine cable, the cable cores of the submarine cables on both sides of the connection box can be respectively inserted into the interior of the connection box along the second installation hole and the first installation hole for connection, so that the armor metal layer of the submarine cable can be clamped in the gap formed by the first connecting sleeve and the second connecting sleeve, and the armor metal layer can be clamped by adjusting the width of the gap, so that the electrical connection of the submarine cables on both sides of the connection box can be realized, and the induced current generated in the connection box can be grounded, which avoids the induced current from gathering in the connection box and damaging the optical unit, and effectively protects the optical unit. In addition, by reinforcing the connection of the armor metal layer of the submarine cable, the overall connection strength of the submarine cable connection can also be improved to prevent slippage at the connection.

[0047] Figure 1 A schematic diagram of the overall structure of a submarine cable splicing box provided by an embodiment of the utility model; Figure 2 A partially enlarged schematic diagram of a submarine cable splicing box provided in an embodiment of the utility model.

[0048] You can refer to Figure 1 and Figure 2 The present invention provides a submarine cable splicing box 100, including a splicing box body 110, a reinforcement assembly 120 and a sealing assembly 130. The reinforcement assembly 120 is arranged on two opposite sides of the splicing box body 110. The reinforcement assembly 120 includes a fixing seat 121, a first connecting sleeve 122 and a second connecting sleeve 123. The fixing seat 121 is fixedly connected to one side of the splicing box body 110, the first connecting sleeve 122 is connected to the fixing seat 121, the fixing seat 121 has a first mounting hole, the first connecting sleeve 122 has a second mounting hole, the first mounting hole is connected to the inside of the splicing box body 110, and the first mounting hole is connected to the second mounting hole. The first mounting hole and the second mounting hole are connected, and the cable core of the submarine cable 200 is passed through the junction box body 110 through the first mounting hole. The second connecting sleeve 123 is sleeved on the outside of the first connecting sleeve 122, and one end of the second connecting sleeve 123 is connected to the fixing seat 121. A gap 124 with adjustable width is formed between the first connecting sleeve 122 and the second connecting sleeve 123 to clamp the armor layer of the submarine cable 200 through the gap 124. The sealing component 130 is arranged between the reinforcement component 120 and the submarine cable 200, and the sealing component 130 is used to seal the gap 124 between the reinforcement component 120 and the submarine cable 200.

[0049] It can be understood that the material of the fixing seat 121, the first connecting sleeve 122 and the second connecting sleeve 123 can all use conductive metal materials, so as to achieve grounding through the armored metal layer. Specifically, the material of the fixing seat 121, the first connecting sleeve 122 and the second connecting sleeve 123 can use stainless steel with grade 316L.

[0050] The submarine cable splicing box 100 provided by the embodiment of the utility model has a structure for clamping the armored metal layer of the submarine cable 200 on both sides of the splicing box body 110. When splicing the submarine cable 200, the cable cores of the submarine cables 200 on both sides of the splicing box 100 can be respectively inserted into the interior of the splicing box 100 along the second installation hole and the first installation hole for splicing, so that the armored metal layer of the submarine cable 200 can be clamped in the gap 124 formed by the first connecting sleeve 122 and the second connecting sleeve 123, and the armored metal layer can be clamped by adjusting the width of the gap 124, so that the electrical connection of the submarine cables 200 on both sides of the splicing box 100 can be achieved, and the induced current generated in the splicing box 100 can be grounded, so as to avoid the induced current from gathering in the splicing box 100 and damaging the optical unit, thereby effectively protecting the optical unit. In addition, by reinforcing the connection of the armored metal layer of the submarine cable 200, the overall connection strength of the splicing part of the submarine cable 200 can also be improved to prevent the splicing part from slipping.

[0051] In the above embodiment, the outer wall of the first connecting sleeve 122 may include a first conical surface, the inner wall of the second connecting sleeve 123 may include a second conical surface, a gap 124 is formed between the first conical surface and the second conical surface, and the width of the gap 124 changes with the change of the relative position of the first connecting sleeve 122 and the second connecting sleeve 123 along the axial direction of the second mounting hole. It can be understood that when the armor metal layer needs to be placed in the gap 124 between the first conical surface and the second conical surface, the first connecting sleeve 122 and the second connecting sleeve 123 can be separated along the axial direction of the second mounting hole, so that the gap 124 between the first conical surface and the second conical surface becomes wider, so as to facilitate the placement of the armor metal layer in the gap 124, and then the first connecting sleeve 122 and the second connecting sleeve 123 can be brought close to each other along the axial direction of the second mounting hole, so that the gap 124 between the first conical surface and the second conical surface becomes narrower, thereby clamping the armor metal layer in the gap 124, and the clamping of the armor metal layer in the above manner is not only convenient to operate but also reliable in clamping firmness, and the armor metal layer is not easy to slip off.

[0052] In the above embodiment, the diameters of the first conical surface and the second conical surface can be reduced in the direction away from the fixing seat 121. Such a design can reduce the bending degree of the armor metal layer at the entrance of the gap 124 and reduce stress concentration.

[0053] In the above embodiment, the reinforcement component 120 may further include a threaded connector 125, which is connected between the second connection sleeve 123 and the fixing seat 121, and is used to adjust the relative positions of the first connection sleeve 122 and the second connection sleeve 123 along the axial direction of the second mounting hole. It can be understood that when the armored metal layer needs to be placed in the gap 124 between the first conical surface and the second conical surface, the threaded connector 125 can be screwed in a specific direction to separate the first connection sleeve 122 and the second connection sleeve 123 along the axial direction of the second mounting hole, and then the threaded connector 125 can be screwed in the opposite direction to make the first connection sleeve 122 and the second connection sleeve 123 close to each other along the axial direction of the second mounting hole, thereby clamping the armored metal layer in the gap 124. Specifically, the threaded connector 125 may include bolts and nuts.

[0054] In the above embodiment, the end of the fixing seat 121 away from the junction box body 110 may be provided with a slot, and one end of the first connecting sleeve 122 is snapped into the slot. Figure 1 and Figure 2 As shown, it can be understood that when the second connecting sleeve 123 is connected to the fixed seat 121, it can generate an extrusion force on the first conical surface of the first connecting sleeve 122 toward the fixed seat 121, so that the end of the first connecting sleeve 122 is pressed tightly against the groove on the fixed seat 121 to prevent the first connecting sleeve 122 from shaking. The first connecting sleeve 122 and the fixed seat 121 are connected by a groove, which can effectively improve the disassembly and assembly efficiency of the reinforcement component 120.

[0055] In the above embodiment, the sealing assembly 130 may further include a first sealing member 131, which is configured to be disposed between the second connecting sleeve 123 and the submarine cable 200, and the first sealing member 131 is disposed at an end of the second connecting sleeve 123 away from the fixing seat 121, and the gap 124 between the second connecting sleeve 123 and the submarine cable 200 can be sealed by the first sealing member 131 to prevent seawater from entering.

[0056] In the above embodiment, the outer wall of the first sealing member 131 may include a third conical surface, the inner wall of the second connecting sleeve 123 includes a fourth conical surface, and the diameters of the third conical surface and the fourth conical surface decrease in the direction close to the fixing seat 121, and the third conical surface and the fourth conical surface abut against each other to seal the gap 124 between the second connecting sleeve 123 and the submarine cable 200. The first sealing member 131 uses such a conical surface for sealing, which can improve the sealing effect on the one hand, and make the first sealing member 131 more stably connected on the other hand, to avoid loosening due to shaking.

[0057] In the above embodiment, the first sealing member 131 may be configured to extend from a side of the second connecting sleeve 123 away from the fixing seat 121, the outer wall of the end of the second connecting sleeve 123 away from the fixing seat 121 has an external thread, the reinforcing assembly 120 further includes a fastening nut 126, the fastening nut 126 has a central hole for the submarine cable 200 to pass through, the fastening nut 126 is threadedly connected to the external thread on the second connecting sleeve 123, and the fastening nut 126 abuts against the end of the first sealing member 131 extending from the second connecting sleeve 123. By fastening the fastening nut 126 to tighten the first sealing member 131, the reliability and sealing effect of the first sealing member 131 can be further improved.

[0058] In the above embodiment, the sealing assembly 130 may further include a second sealing member 132, which is configured to be disposed between the inner wall of the fixing seat 121 and the submarine cable 200. The second sealing member 132 can seal the gap 124 between the fixing seat 121 and the submarine cable 200. By performing double sealing together with the first sealing member 131 and the second sealing member 132, the sealing performance of the junction box 100 can be further improved.

[0059] The first sealing member 131 and the second sealing member 132 may specifically be sealing ring structures, and may be made of elastic waterproof material, such as rubber.

[0060] In the above embodiment, the reinforcement component 120 may also include a clamping sleeve 127, which is configured to be sleeved on the outside of the submarine cable 200, and the clamping sleeve 127 is arranged at the end of the fastening nut 126 that is away from the second connecting sleeve 123. The clamping sleeve 127 includes two arc-shaped clips, and the two clips are connected by bolts. The two clips can be clamped to the submarine cable 200 by adjusting the bolts. By setting the clamping sleeve 127, the sheath of the submarine cable 200 can be tightened to prevent the sheath from slipping.

[0061] The submarine cable splicing box 100 provided in the embodiment of the utility model comprises a splicing box body 110, a reinforcement assembly 120 and a sealing assembly 130, wherein the reinforcement assembly 120 is arranged on opposite sides of the splicing box body 110, and the reinforcement assembly 120 comprises a fixing seat 121, a first connecting sleeve 122 and a second connecting sleeve 123; the fixing seat 121 is fixedly connected to one side of the splicing box body 110, the first connecting sleeve 122 is connected to the fixing seat 121, the fixing seat 121 has a first mounting hole, the first connecting sleeve 122 has a second mounting hole, the first mounting hole is communicated with the inside of the splicing box body 110, and the first mounting hole and The second mounting hole is connected, and the first mounting hole and the second mounting hole form a channel for the cable core of the submarine cable 200 to pass through the junction box body 110; the second connecting sleeve 123 is sleeved on the outside of the first connecting sleeve 122, and one end of the second connecting sleeve 123 is connected to the fixing seat 121, and a gap 124 with adjustable width is formed between the first connecting sleeve 122 and the second connecting sleeve 123 to clamp the armor layer of the submarine cable 200 through the gap 124; the sealing component 130 is arranged between the reinforcement component 120 and the submarine cable 200, and the sealing component 130 is used to seal the gap 124 between the reinforcement component 120 and the submarine cable 200.

[0062] The submarine cable splicing box 100 provided by the embodiment of the utility model has a structure for clamping the armored metal layer of the submarine cable 200 on both sides of the splicing box body 110. When splicing the submarine cable 200, the cable cores of the submarine cables 200 on both sides of the splicing box 100 can be respectively inserted into the interior of the splicing box 100 along the second installation hole and the first installation hole for splicing, so that the armored metal layer of the submarine cable 200 can be clamped in the gap 124 formed by the first connecting sleeve 122 and the second connecting sleeve 123, and the armored metal layer can be clamped by adjusting the width of the gap 124, so that the electrical connection of the submarine cables 200 on both sides of the splicing box 100 can be achieved, and the induced current generated in the splicing box 100 can be grounded, so as to avoid the induced current from gathering in the splicing box 100 and damaging the optical unit, thereby effectively protecting the optical unit. In addition, by reinforcing the connection of the armored metal layer of the submarine cable 200, the overall connection strength of the splicing part of the submarine cable 200 can also be improved to prevent the splicing part from slipping.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A submarine cable splicing box, characterized in that: It includes a connection box body, a reinforcement component and a sealing component, wherein the reinforcement component is arranged on two opposite sides of the connection box body, and the reinforcement component includes a fixing seat, a first connecting sleeve and a second connecting sleeve; The fixing seat is fixedly connected to one side of the splicing box body, the first connecting sleeve is connected to the fixing seat, the fixing seat has a first mounting hole, the first connecting sleeve has a second mounting hole, the first mounting hole is connected to the inside of the splicing box body, the first mounting hole is connected to the second mounting hole, and the first mounting hole and the second mounting hole form a channel for the cable core of the submarine cable to pass through the splicing box body; The second connecting sleeve is arranged outside the first connecting sleeve, and one end of the second connecting sleeve is connected to the fixing seat, and a gap with adjustable width is formed between the first connecting sleeve and the second connecting sleeve to clamp the armor layer of the submarine cable through the gap; The sealing assembly is arranged between the reinforcement assembly and the submarine cable, and is used to seal the gap between the reinforcement assembly and the submarine cable.

2. The submarine cable splicing box according to claim 1, characterized in that: The outer wall of the first connecting sleeve includes a first conical surface, and the inner wall of the second connecting sleeve includes a second conical surface. The gap is formed between the first conical surface and the second conical surface, and the width of the gap changes with the change of the relative position of the first connecting sleeve and the second connecting sleeve along the axial direction of the second mounting hole.

3. The submarine cable splicing box according to claim 2, characterized in that: The diameters of the first tapered surface and the second tapered surface decrease in a direction away from the fixing seat.

4. The submarine cable splicing box according to claim 3, characterized in that: The reinforcement assembly also includes a threaded connector, which is connected between the second connecting sleeve and the fixing seat, and is used to adjust the relative positions of the first connecting sleeve and the second connecting sleeve along the axial direction of the second mounting hole.

5. The submarine cable splicing box according to claim 4, characterized in that: One end of the fixing seat away from the connection box body is provided with a clamping groove, and one end of the first connecting sleeve is clamped in the clamping groove.

6. The submarine cable splicing box according to claim 5, characterized in that: The sealing assembly includes a first sealing member, which is configured to be disposed between the second connecting sleeve and the submarine cable, and the first sealing member is disposed at an end of the second connecting sleeve away from the fixing seat.

7. The submarine cable splicing box according to claim 6, characterized in that: The outer wall of the first sealing member includes a third conical surface, the inner wall of the second connecting sleeve includes a fourth conical surface, and the diameters of the third conical surface and the fourth conical surface decrease in a direction approaching the fixing seat, and the third conical surface and the fourth conical surface abut against each other to seal the gap between the second connecting sleeve and the submarine cable.

8. The submarine cable splicing box according to claim 7, characterized in that: The first sealing member is configured to extend from a side of the second connecting sleeve away from the fixing seat, and an outer wall of the end of the second connecting sleeve away from the fixing seat has an external thread. The reinforcement assembly also includes a fastening nut, which has a central hole for the submarine cable to pass through. The fastening nut is threadedly connected to the external thread on the second connecting sleeve, and the fastening nut abuts against an end of the first sealing member extending out of the second connecting sleeve.

9. The submarine cable splicing box according to claim 8, characterized in that: The sealing assembly further includes a second sealing member, which is configured to be disposed between an inner wall of the fixing seat and the submarine cable.

10. The submarine cable splicing box according to any one of claims 8 or 9, characterized in that: The reinforcement assembly also includes a clamping sleeve, which is configured to be sleeved outside the submarine cable, and the clamping sleeve is arranged at the end of the fastening nut facing away from the second connecting sleeve. The clamping sleeve includes two arc-shaped clips, and the two clips are connected by bolts so that the two clips can clamp the submarine cable by adjusting the bolts.

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