Submarine cable joint box

Abstract

Provided in the present utility model is a submarine cable joint box. The submarine cable joint box provided in the present utility model comprises a joint box body, a reinforcing assembly and a sealing assembly, wherein the reinforcing assembly is arranged on two opposite sides of the joint box body, and comprises a fixing base, a first connecting sleeve and a second connecting sleeve; the fixing base is fixedly connected to one side of the joint box body, and the first connecting sleeve is connected to the fixing base; the fixing base is provided with a first mounting hole, the first connecting sleeve is provided with a second mounting hole, the first mounting hole is in communication with the interior of the joint box body, the first mounting hole is in communication with the second mounting hole, and the first mounting hole and the second mounting hole form a channel allowing a cable core of a submarine cable to run into the joint box body; and the second connecting sleeve is sleeved outside the first connecting sleeve, one end of the second connecting sleeve is connected to the fixing base, and a gap with an adjustable width is formed between the first connecting sleeve and the second connecting sleeve. The submarine cable joint box provided in the present utility model can prevent induced current from continuously discharging and protect an optical unit.

Description

Submarine cable splice box

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on April 3, 2024, with application number 202420689308.0 and application name “Submarine Cable Splicing Box”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The utility model relates to the field of submarine cables, in particular to a submarine cable splicing box. Background Art

[0003] With the growth of global communications and energy demands, submarine optical cables have been widely used as an important medium for information and power transmission. Submarine cable splice boxes are key components in submarine cable systems, used to connect and protect the connectors of submarine cables.

[0004] The structure of an existing submarine cable splice box usually includes an outer shell, a sealing structure, a splicing cavity, and a conductor connection part. Among them, 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 submarine cable joints, and the conductor connection part ensures the connection of conductors. These structures work together to enable the submarine cable splice box to work stably in the marine environment and ensure reliable connection and transmission of the submarine cable system.

[0005] However, the existing submarine cable splice box is prone to continuous discharge of induced current, which may cause the optical unit to malfunction.

[0006] Utility Model Content

[0007] In order to solve at least one of the problems mentioned in the background technology, the present invention provides a submarine cable splice box, which can prevent the continuous discharge of induced current and protect the optical unit.

[0008] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0009] The utility model provides a submarine cable splice box, comprising a splice box body, a reinforcement component and a sealing component. The reinforcement component is arranged on two opposite sides of the splice box body, and the reinforcement component comprises a fixing seat, a first connecting sleeve and a second connecting sleeve;

[0010] The fixing seat is fixedly connected to one side of the splice 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 interior of the splice 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 splice box body;

[0011] 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. 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;

[0012] 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.

[0013] 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.

[0014] 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.

[0015] As an optional embodiment, the reinforcement assembly further includes a threaded connector connected between the second connecting sleeve and the fixing seat, and the threaded connector 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.

[0016] As an optional implementation, the end of the fixing seat facing away from the junction box body has a slot, and one end of the first connecting sleeve is snapped into the slot.

[0017] As an optional embodiment, the sealing assembly includes a first sealing member, which is configured to be arranged between the second connecting sleeve and the submarine cable, and the first sealing member is arranged at an end of the second connecting sleeve away from the fixing seat.

[0018] 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.

[0019] As an optional embodiment, the first sealing member is configured to extend from a side of the second connecting sleeve away from the fixing seat, and the 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 the end of the first sealing member extending out of the second connecting sleeve.

[0020] As an optional embodiment, the sealing assembly further includes a second sealing member, which is configured to be disposed between the inner wall of the fixing seat and the submarine cable.

[0021] As an optional embodiment, the reinforcement assembly also includes a clamping sleeve, which is configured to be sleeved on the outside of 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.

[0022] The submarine cable splicing box provided by the utility model includes a splicing box body, a reinforcement component and a sealing component. The reinforcement component is arranged on opposite sides of the splicing 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 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 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 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.

[0023] 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 cables, 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. 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, which avoids the induced current from accumulating in the splicing box 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, the overall connection strength of the submarine cable splice can also be improved to prevent the splice from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] FIG1 is a schematic diagram of the overall structure of a submarine cable splice box provided by an embodiment of the present invention;

[0026] FIG2 is a partially enlarged schematic diagram of a submarine cable splice box provided by an embodiment of the present utility model.

[0027] Description of reference numerals:

[0028] 100-connection box;

[0029] 110-connection box body;

[0030] 120-reinforcement components;

[0031] 121-fixed seat;

[0032] 122-first connecting sleeve;

[0033] 123-second connecting sleeve;

[0034] 124-gap;

[0035] 125-threaded connector;

[0036] 126- fastening nut;

[0037] 127-clamping sleeve;

[0038] 130-sealing assembly;

[0039] 131-first sealing member;

[0040] 132 - second sealing member;

[0041] 200-submarine cable. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0044] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0045] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0046] Furthermore, the terms "first," "second," etc., are primarily used to distinguish between different devices, elements, or components (which may or may not be of the same type and configuration), and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0047] The structure of an existing submarine cable splice box generally includes an outer shell, a sealing structure, a splice cavity, and a conductor connection part. Among them, the outer shell is used to protect the internal components, the sealing structure prevents seawater from entering, the splice cavity is used for the installation and connection of the submarine cable joint, and the conductor connection part ensures the connection of the conductor. These structures work together to enable the submarine cable splice box to operate stably in the marine environment and ensure the reliable connection and transmission of the submarine cable system. However, the existing submarine cable splice box is prone to continuous discharge of induced current, which may cause the optical unit to malfunction.

[0048] In view of this, the utility model provides a submarine cable splicing box, including 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 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 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 submarine cables, the cable cores of the submarine cables on both sides of the junction box can be respectively inserted into the interior of the junction box along the second mounting hole and the first mounting hole for connection. 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 junction box can be achieved, and the induced current generated in the junction box can be grounded, which avoids the induced current from gathering in the junction 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 joint can also be improved to prevent slippage at the joint.

[0049] FIG1 is a schematic diagram of the overall structure of a submarine cable splice box provided in an embodiment of the present utility model; FIG2 is a partially enlarged schematic diagram of a submarine cable splice box provided in an embodiment of the present utility model.

[0050] With reference to Figures 1 and 2, an embodiment of the present invention provides a submarine cable splice box 100, comprising a splice box body 110, a reinforcement assembly 120, and a sealing assembly 130. The reinforcement assembly 120 is disposed on opposite sides of the splice box body 110. 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 splice box body 110, and the first connecting sleeve 122 is connected to the fixing seat 121. The fixing seat 121 has a first mounting hole, and the first connecting sleeve 122 has a second mounting hole. The first mounting hole is in communication with the interior of the splice box body 110. 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 200 to pass through the junction box body 110; the second connecting sleeve 123 is arranged outside 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 assembly 130 is arranged between the reinforcement assembly 120 and the submarine cable 200, and the sealing assembly 130 is used to seal the gap 124 between the reinforcement assembly 120 and the submarine cable 200.

[0051] It can be understood that the materials of the fixing seat 121, the first connecting sleeve 122 and the second connecting sleeve 123 can all be conductive metal materials, so as to achieve grounding through the armored metal layer. Specifically, the materials of the fixing seat 121, the first connecting sleeve 122 and the second connecting sleeve 123 can be 316L stainless steel.

[0052] The submarine cable splice box 100 provided by the embodiment of the utility model is provided with a structure for clamping the armored metal layer of the submarine cable 200 on both sides of the splice box body 110. When the submarine cable 200 is spliced, the cable cores of the submarine cables 200 on both sides of the splice box 100 can be respectively inserted into the interior of the splice box 100 along the second installation hole and the first installation hole for splicing. 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 splice box 100 can be achieved, and the induced current generated in the splice box 100 can be grounded, thereby avoiding the induced current from accumulating in the splice 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 splice of the submarine cable 200 can also be improved to prevent the splice from slipping.

[0053] In the above embodiment, the outer wall of the first connecting sleeve 122 may include a first conical surface, and 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. The width of the gap 124 varies with 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, thereby widening the gap 124 between the first conical surface and the second conical surface to facilitate the placement of the armor metal layer in the gap 124. Thereafter, the first connecting sleeve 122 and the second connecting sleeve 123 can be brought closer along the axial direction of the second mounting hole, thereby narrowing the gap 124 between the first conical surface and the second conical surface, thereby clamping the armor metal layer in the gap 124. Clamping the armor metal layer in the above manner is not only convenient to operate but also provides reliable clamping and prevents the armor metal layer from slipping off.

[0054] 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 armored metal layer at the entrance of the gap 124 and reduce stress concentration.

[0055] In the above embodiment, the reinforcement assembly 120 may further include a threaded connector 125, which is connected between the second connecting sleeve 123 and the fixing seat 121. The threaded connector 125 is used to adjust the relative positions 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 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 connecting sleeve 122 and the second connecting sleeve 123 along the axial direction of the second mounting hole. Thereafter, the threaded connector 125 can be screwed in the opposite direction to bring the first connecting sleeve 122 and the second connecting sleeve 123 closer together 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 a bolt and a nut.

[0056] In the above embodiment, a slot can be provided at the end of the fixing base 121 facing away from the junction box body 110, into which one end of the first connecting sleeve 122 is snapped. As shown in Figures 1 and 2, it can be understood that when the second connecting sleeve 123 is connected to the fixing base 121, a squeezing force can be generated on the first conical surface of the first connecting sleeve 122 toward the fixing base 121, thereby causing the end of the first connecting sleeve 122 to be tightly pressed against the slot on the fixing base 121, preventing the first connecting sleeve 122 from shaking. The use of the slot to connect the first connecting sleeve 122 and the fixing base 121 can effectively improve the efficiency of assembly and disassembly of the reinforcement assembly 120.

[0057] In the above embodiment, the sealing assembly 130 may further include a first sealing member 131, which is configured to be arranged between the second connecting sleeve 123 and the submarine cable 200, and the first sealing member 131 is arranged at an end of the second connecting sleeve 123 away from the fixing seat 121. The first sealing member 131 can seal the gap 124 between the second connecting sleeve 123 and the submarine cable 200 to prevent seawater from entering.

[0058] In the above embodiment, the outer wall of the first sealing member 131 may include a third tapered surface, and the inner wall of the second connecting sleeve 123 may include a fourth tapered surface. The diameters of the third and fourth tapered surfaces decrease as they approach the fixing seat 121. The third and fourth tapered surfaces abut against each other to seal the gap 124 between the second connecting sleeve 123 and the submarine cable 200. The use of such tapered surfaces by the first sealing member 131 for sealing can, on the one hand, improve the sealing effect, and on the other hand, make the connection of the first sealing member 131 more stable, preventing it from loosening due to shaking.

[0059] In the above embodiment, the first sealing member 131 can 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 external threads. The reinforcement assembly 120 also 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 threads on the second connecting sleeve 123 and abuts against the end of the first sealing member 131 that extends out of the second connecting sleeve 123. By tightening the fastening nut 126 against the first sealing member 131, the reliability and sealing effect of the first sealing member 131 can be further improved.

[0060] In the above embodiment, the sealing assembly 130 may further include a second sealing member 132, which is configured to be arranged 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.

[0061] The first sealing member 131 and the second sealing member 132 may specifically be a sealing ring structure, and the material may be an elastic waterproof material, such as rubber.

[0062] In the above embodiment, the reinforcement assembly 120 may further 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 facing away from the second connecting sleeve 123. The clamping sleeve 127 includes two arc-shaped clips, which are connected by bolts. The two clips can be clamped to the submarine cable 200 by adjusting the bolts. By providing the clamping sleeve 127, the sheath of the submarine cable 200 can be tightened to prevent the sheath from slipping.

[0063] The submarine cable splice box 100 provided by the embodiment of the present invention includes a splice box body 110, a reinforcement component 120 and a sealing component 130. The reinforcement component 120 is arranged on opposite sides of the splice box body 110. The reinforcement component 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 splice 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 interior of the splice 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 arranged outside 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.

[0064] The submarine cable splice box 100 provided by the embodiment of the utility model is provided with a structure for clamping the armored metal layer of the submarine cable 200 on both sides of the splice box body 110. When the submarine cable 200 is spliced, the cable cores of the submarine cables 200 on both sides of the splice box 100 can be respectively inserted into the interior of the splice box 100 along the second installation hole and the first installation hole for splicing. 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 splice box 100 can be achieved, and the induced current generated in the splice box 100 can be grounded, thereby avoiding the induced current from accumulating in the splice 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 splice of the submarine cable 200 can also be improved to prevent the splice from slipping.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, 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 invention.

Claims

1. A submarine cable splice box, characterized in that: The splice box comprises a main body, a reinforcement component and a sealing component. The reinforcement component is arranged on two opposite sides of the main body of the splice box. 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 splice 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 interior of the splice 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 splice 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 splice box according to claim 1, characterized in that: 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 the 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.

3. The submarine cable splice 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 splice box according to claim 3, characterized in that: The reinforcement assembly further includes a threaded connector connected between the second connecting sleeve and the fixing seat, and the threaded connector 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 splice box according to claim 4, characterized in that: An end of the fixing seat facing away from the connection box body is provided with a clamping slot, and one end of the first connecting sleeve is clamped in the clamping slot.

6. The submarine cable splice 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 splice 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. 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 splice 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 the outer wall of the second connecting sleeve at one end 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 the end of the first sealing member that extends out of the second connecting sleeve.

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

10. The submarine cable splice 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 on the outside of 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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