CN219351215U

CN219351215U - Submarine cable cabin penetrating sealing structure and submarine cable underwater separation box

Info

Publication number: CN219351215U
Application number: CN202223361722.9U
Authority: CN
Inventors: 高春荣; 任程刚; 谢书鸿; 苏建; 房海东; 郭朝阳
Original assignee: Zhongtian Technology Marine Systems Co ltd; Zhongtian Technology Submarine Cable Co Ltd
Current assignee: Zhongtian Technology Marine Systems Co ltd; Zhongtian Technology Submarine Cable Co Ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-07-14
Anticipated expiration: 2032-12-14

Abstract

The utility model provides a submarine cable penetration sealing structure and a submarine cable underwater separation box. Sea cable wears cabin seal structure includes: the submarine cable installation device comprises a shell, a sealing cavity and a sealing device, wherein the shell is configured to be connected with a mechanical cabin body of a submarine cable to be installed, the shell is provided with an installation through hole for the submarine cable to penetrate out, and the sealing cavity is communicated with the installation through hole, the installation through hole is located at a first end of the shell, and the sealing cavity is located at a second end, opposite to the first end, of the shell; at least one V-shaped seal positioned within the seal cavity, the V-shaped seal configured to be compressively deformable under an external force; the compressing piece is at least partially positioned outside the sealing cavity and connected with the shell so as to apply compressing force to the V-shaped sealing piece; and the end sealing structure is positioned in the installation through hole, and the compressing piece and the end sealing structure are respectively provided with an assembly through hole for the submarine cable to pass through. The technical scheme of the utility model provides the submarine cable cabin penetrating sealing structure capable of double sealing, so that the sealing effect is improved.

Description

Submarine cable cabin penetrating sealing structure and submarine cable underwater separation box

Technical Field

The utility model relates to the technical field of submarine cables, in particular to a submarine cable cabin penetrating sealing structure and a submarine cable underwater separation box.

Background

Currently, a submarine cable penetration structure (for example, a submarine cable penetration structure with a publication number of CN 113904286A) known by the inventor comprises a shell for a submarine cable to penetrate, a metal self-tightening sealing ring arranged at one end of the shell, an O-shaped sealing ring and an end cover locking member, wherein the end cover locking member applies a pressing force to the O-shaped sealing ring to enable the O-shaped sealing ring to be compressed and deformed so as to seal a gap between the submarine cable and the shell.

In this structure, only one end of the housing is sealed, and an end seal is not additionally provided at the end of the housing to be connected to the machinery compartment.

Disclosure of Invention

The utility model mainly aims to provide a submarine cable penetration sealing structure and a submarine cable underwater separation box, so as to provide the submarine cable penetration sealing structure capable of achieving double sealing and improve sealing effect.

In order to achieve the above object, according to one aspect of the present utility model, there is provided a submarine cable penetration sealing structure comprising: the submarine cable installation device comprises a shell, a sealing cavity and a sealing device, wherein the shell is configured to be connected with a mechanical cabin body of a submarine cable to be installed, the shell is provided with an installation through hole for the submarine cable to penetrate out, and the sealing cavity is communicated with the installation through hole, the installation through hole is located at a first end of the shell, and the sealing cavity is located at a second end, opposite to the first end, of the shell; at least one V-shaped seal positioned within the seal cavity, the V-shaped seal configured to be compressively deformable under an external force; the compressing piece is at least partially positioned outside the sealing cavity and connected with the shell so as to apply compressing force to the V-shaped sealing piece; and the end sealing structure is positioned in the installation through hole, and the compressing piece and the end sealing structure are respectively provided with an assembly through hole for the submarine cable to pass through.

Further, the compressing piece is a threaded sleeve, a threaded section is arranged on the inner wall of the sealing cavity, and the threaded sleeve is in threaded connection with the threaded section, so that the compressing piece is movably arranged relative to the shell.

Further, the submarine cable cabin penetrating sealing structure further comprises a supporting ring arranged in the sealing cavity, one side of the supporting ring is abutted to the bottom wall of the sealing cavity, and the other side of the supporting ring is abutted to the V-shaped sealing piece.

Further, the opening of the V-shaped sealing piece faces the pressing piece, the V-shaped sealing piece is provided with an end part opposite to the opening, and one side of the supporting ring is provided with an arc-shaped groove matched with the shape of the end part.

Further, the submarine cable penetration sealing structure further comprises a pressing ring arranged in the sealing cavity, one end of the pressing ring is in butt joint with the V-shaped sealing piece, and the other end of the pressing ring is in butt joint with the pressing piece.

Further, the submarine cable cabin penetrating sealing structure further comprises a heat-shrinkable sleeve, and the heat-shrinkable sleeve is coated on the periphery of the part of the compressing piece and the periphery of the part of the shell.

Further, the installation groove is formed in the installation end face of the shell, and the submarine cable cabin penetrating sealing structure further comprises a first sealing piece, wherein the first sealing piece is located in the installation groove to seal the joint between the shell and the mechanical cabin.

Further, the installation through hole includes first through hole section and the second through hole section that are linked together, along the direction of first end to second end, first through hole section and second through hole section set gradually to the internal diameter of first through hole section is less than the internal diameter of second through hole section, and end seal structure is located first through hole section.

Further, vulcanized rubber is filled in the first through hole section to form vulcanized sealing between the first end of the shell and the submarine cable, and the vulcanized rubber forms an end sealing structure; alternatively, the end seal structure includes a V-shaped seal member located in the mounting through hole and a pressing member provided at one side of the V-shaped seal member.

According to another aspect of the utility model, there is provided a submarine cable underwater separation box comprising a mechanical cabin and the submarine cable penetration sealing structure, wherein the mechanical cabin comprises a cabin and a cabin end cover arranged at one end of the cabin, and the submarine cable penetration sealing structure is in sealing connection with the mechanical cabin to connect the submarine cable seal into the mechanical cabin.

By applying the technical scheme of the utility model, the first end of the shell is in sealing connection with the mechanical cabin body through the end sealing structure; the submarine cable sequentially passes through the sealing cavity and the mounting through hole and then passes into the mechanical cabin body, so that the submarine cable passing through the cabin is realized; the V-shaped sealing piece is arranged in the sealing cavity, and the pressing piece applies pressing force to the V-shaped sealing piece, so that the V-shaped sealing piece can deform to fill gaps between the submarine cable and the shell, and the effect of mechanical sealing is achieved. Therefore, by arranging the sealing structures at the two ends of the shell, double sealing is realized, and the sealing effect of the submarine cable cabin penetrating sealing structure is improved; in addition, compared with the sealing by adopting an O-shaped sealing ring or a cylindrical sealing ring in the prior art, the V-shaped sealing element has larger deformation amount when being compressed due to the structural characteristic of the V shape, so that on one hand, the V-shaped sealing element can be better coated on the periphery of a submarine cable due to larger deformation amount, the sealing effect is better, and the installation is easier; on the other hand, when the external diameter of sea cable floats from top to bottom in certain limit, because the deflection of V type sealing member is great, V type sealing member still can fill the clearance between sea cable and the casing to make up the manufacturing deviation of sea cable, like this, the adaptability of V type sealing member to the external diameter deviation of sea cable is stronger, thereby promotes sea cable and wears the sealed effect of cabin seal structure.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 shows an assembled schematic view of a sea cable penetration sealing structure, sea cable and machinery pod according to the present utility model;

FIG. 2 shows a schematic structural view of the submarine cable penetration sealing arrangement of FIG. 1; and

fig. 3 shows an enlarged view of the sea cable penetration sealing structure of fig. 1 at a.

Wherein the above figures include the following reference numerals:

1. a housing; 11. mounting through holes; 111. a first via segment; 112. a second through hole section; 12. sealing the cavity; 121. a bottom wall; 13. a first end; 14. a second end; 15. a mounting end face; 151. a mounting groove; 2. a V-seal; 3. a pressing member; 4. a first seal; 5. a heat-shrinkable sleeve; 51. a first casing section; 52. a second casing section; 6. a support ring; 61. an arc-shaped groove; 7. a compression ring; 100. a submarine cable; 201. and a cabin end cover.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

It should be noted that, the outer sheath of the submarine cable is generally made of non-rubber and polyurethane materials such as PE, nylon, etc., and the materials are not bonded with vulcanized rubber and cannot be vulcanized and sealed, so that the utility model provides a submarine cable cabin penetrating sealing structure adopting mechanical sealing aiming at the technical defects.

It should be noted that, in the prior art, the O-shaped sealing ring is adopted for sealing, the compression deformation amount of the O-shaped sealing ring is limited, and because the external diameter size of the submarine cable has positive and negative deviations, when the external diameter size of the submarine cable is smaller than the standard value, the gap between the submarine cable and the shell can not be filled when the O-shaped sealing ring is in the maximum deformation amount, the adaptability of the O-shaped sealing ring to the external diameter deviation of the submarine cable is weak, and the sealing effect is affected. Therefore, aiming at the technical defects, the utility model provides the submarine cable cabin penetrating sealing structure with better sealing performance.

It should be noted that the submarine cable penetration sealing structure of the utility model is mainly applied to submarine cables with outer jackets made of non-rubber and polyurethane materials, and can also be applied to submarine cables with outer jackets made of other materials.

The submarine cable penetration sealing structure can be applied to submarine cable underwater separation boxes, submarine cable construction ships and other conditions requiring submarine cables to penetrate through a mechanical cabin body.

As shown in fig. 1 to 3, an embodiment of the present utility model provides a submarine cable penetration sealing structure. Sea cable wears cabin seal structure includes: the marine cable device comprises a shell 1, at least one V-shaped sealing element 2, a pressing element 3 and an end sealing structure, wherein the shell 1 is configured to be connected with a mechanical cabin of a marine cable 100 to be installed, the shell 1 defines a mounting through hole 11 for the marine cable 100 to pass through and a sealing cavity 12 communicated with the mounting through hole 11, the mounting through hole 11 is positioned at a first end 13 of the shell 1, and the sealing cavity 12 is positioned at a second end 14 opposite to the first end 13 of the shell 1; at least one V-seal 2 is located within the seal cavity 12, the V-seal 2 being configured to be compressively deformable under an external force; at least part of the pressing member 3 is located outside the seal cavity 12, and the pressing member 3 is connected with the housing 1 to apply a pressing force to the V-shaped seal member 2 to compressively deform the V-shaped seal member 2; the end sealing structure is positioned in the installation through hole 11, and the compressing piece 3 and the end sealing structure are respectively provided with an assembly through hole for the submarine cable 100 to pass through.

In the above technical solution, the first end of the housing 1 is connected with the machinery compartment through a fastening bolt, and the sealing connection between the housing 1 and the machinery compartment is realized through an end sealing structure; the submarine cable 100 sequentially passes through the sealing cavity 12 and the installation through hole 11 and then passes into the mechanical cabin body, so that the submarine cable passing through cabin is realized; the V-shaped sealing member 2 is disposed in the sealing cavity 12, and one end of the pressing member 3 is disposed in the sealing cavity 12 and abuts against the V-shaped sealing member 2, so that a pressing force along a first direction (i.e., an axial direction of the submarine cable and the housing 1) is applied to the V-shaped sealing member 2, and thus the V-shaped sealing member 2 is pressed to deform, and fills a gap between the submarine cable 100 and the housing 1, thereby realizing a mechanical sealing effect.

Through the arrangement, the sealing structures are arranged at the two ends of the shell 1, so that double sealing is realized, and the sealing effect of the submarine cable cabin penetrating sealing structure is improved; in addition, compared with the sealing by adopting an O-shaped sealing ring or a cylindrical sealing ring in the prior art, the V-shaped sealing element 2 has larger deformation amount when being compressed due to the structural characteristic of the V shape, so that on one hand, the V-shaped sealing element 2 can be better coated on the periphery of a submarine cable due to larger deformation amount, the sealing effect is better, and the installation is easier; on the other hand, when the outer diameter of the submarine cable 100 floats up and down within a certain range, for example, when the outer diameter size of the submarine cable 100 is smaller than the standard value, that is, when the gap between the submarine cable 100 and the shell 1 is larger than the standard value, the V-shaped sealing member 2 can still fill the gap between the submarine cable 100 and the shell 1 due to the larger deformation amount, so that the submarine cable cabin penetrating sealing structure is ensured to have stable sealing performance; the V-shaped sealing element 2 can make up for manufacturing deviation of the submarine cable, has stronger adaptability to the outer diameter deviation of the submarine cable 100, and accordingly improves the sealing effect of the submarine cable cabin penetrating sealing structure.

As shown in fig. 1 to 3, in the embodiment of the present utility model, the pressing member 3 is a screw sleeve, and a threaded section is provided on an inner wall of the seal chamber 12, and the screw sleeve is screwed with the threaded section, so that the pressing member 3 is movably disposed with respect to the housing 1.

In the above technical solution, the rotating movement between the compression member 3 and the seal cavity 12 can be converted into the movement of the compression member 3 along the axial direction by rotating the screw sleeve, so that the screw sleeve moves towards the direction away from the V-shaped seal member 2, and the deformation amount of the V-shaped seal member 2 is reduced, so that a sufficient installation space can be reserved for the submarine cable 100; after the submarine cable 100 is installed, the screw sleeve is rotated to enable the screw sleeve to move towards the direction close to the V-shaped sealing piece 2, so that the deformation amount of the V-shaped sealing piece 2 is increased, and the effect of sealing a gap between the submarine cable 100 and the shell 1 is achieved.

Through the arrangement, the compression piece 3 and the shell 1 are in threaded connection, so that the compression piece 3 can be kept at any relative position of the shell 1, the relative position between the compression piece 3 and the shell 1 is changed according to the difference of the outer diameter sizes of the submarine cables 100, the deformation amount of the V-shaped sealing piece 2 is changed, the V-shaped sealing piece 2 is ensured to fill a gap between the submarine cables 100 and the shell 1, and the sealing effect is ensured.

Preferably, the V-shaped seal 2 is configured such that the inner diameter size is smaller than the outer diameter size of the submarine cable 100, thereby further improving the sealing effect.

As shown in fig. 1 to 3, in the embodiment of the present utility model, the submarine cable penetration sealing structure further includes a support ring 6 disposed in the sealing cavity 12, one side of the support ring 6 abuts against the bottom wall 121 of the sealing cavity 12, and the other side of the support ring 6 abuts against the V-shaped sealing member 2.

In the above technical solution, the opening of the V-shaped sealing member 2 faces the pressing member 3, one side of the supporting ring 6 is provided with the arc-shaped groove 61, and the arc-shaped groove 61 is adapted to the shape of the end of the V-shaped sealing member 2 opposite to the opening.

Through the above arrangement, the end portion of the V-shaped seal member 2 opposite to the opening is located in the arc-shaped groove 61, and thus the support ring 6 can play a role in supporting the V-shaped seal member 2, and the problem that the sealing effect is affected due to the movement of the V-shaped seal member 2 relative to the housing 1 in the deformation process can be avoided, thereby further ensuring the sealing effect.

As shown in fig. 1 to 3, in the embodiment of the present utility model, the submarine cable penetration sealing structure further includes a pressure ring 7 disposed in the sealing cavity 12, one end of the pressure ring 7 abuts against the V-shaped sealing member 2, and the other end of the pressure ring 7 abuts against the pressing member 3.

Through the above arrangement, the pressing member 3 can be prevented from directly contacting the V-shaped sealing member 2, and thus, damage to the V-shaped sealing member 2 can be prevented in the process of rotating the pressing member 3.

As shown in fig. 1 to 3, in the embodiment of the present utility model, the submarine cable penetration sealing structure further comprises a heat shrinkage sleeve 5, and the heat shrinkage sleeve 5 is wrapped around at least part of the compressing member 3 and part of the outer circumference of the housing 1.

By the above arrangement, the heat shrinkage bush 5 is wrapped around the outer periphery of the casing 1 and the part of the pressing member 3 located outside the casing 1, so that the heat shrinkage bush 5 can function to protect the casing 1 and the pressing member 3.

In one embodiment, the heat-shrinkable sleeve 5 comprises a first sleeve section 51 and a second sleeve section 52 which are connected, wherein the inner diameter of the first sleeve section 51 is larger than that of the second sleeve section 52, the first sleeve section 51 is sleeved on the periphery of the compressing piece 3 and the shell 1, and the second sleeve section 52 is sleeved on the periphery of the submarine cable 100.

As shown in fig. 1 to 3, in the embodiment of the present utility model, the installation end surface 15 of the housing 1 is provided with an installation groove 151, and the submarine cable penetration sealing structure further includes a first sealing member 4, where the first sealing member 4 is located in the installation groove 151 to seal the connection between the housing 1 and the machinery compartment.

In the above technical solution, the installation end surface 15 is a step surface, wherein the first installation end surface and the second installation end surface which are connected and form an included angle are both provided with the installation grooves 151, and the first sealing element 4 is arranged in each of the two installation grooves 151. When the housing 1 is connected to the machine compartment, the mounting end face 15 is in surface-to-surface contact with the end face of the machine compartment, so that by providing the first seal 4, a further sealing connection between the housing 1 and the machine compartment is achieved.

As shown in fig. 1 to 3, in the embodiment of the present utility model, the mounting through hole 11 includes a first through hole section 111 and a second through hole section 112 which are communicated, the first through hole section 111 and the second through hole section 112 are disposed in this order in a direction from the first end 13 to the second end 14, and an inner diameter of the first through hole section 111 is smaller than an inner diameter of the second through hole section 112, and an end sealing structure is located in the first through hole section 111.

It should be noted that, when the submarine cable 100 includes a cable core and an outer sheath disposed at an outer periphery of the cable core, the outer sheath at a front end of the submarine cable 100 needs to be peeled off during the cabin penetrating, that is, an outer diameter of the front end of the submarine cable 100 is smaller than an outer diameter of the rear end.

With the arrangement, the front end of the submarine cable 100 is positioned in the first through hole section 111, and the rear end of the submarine cable 100 is positioned in the second through hole section 112, so that the gap between the front end of the submarine cable 100 and the shell 1 can be reduced, the volume required to be sealed is reduced, and the cost is reduced.

In an embodiment of the utility model, the first through-hole section 111 is filled with a vulcanized rubber forming an end seal between the first end 13 of the housing 1 and the sea cable 100.

In another embodiment of the present utility model, the end seal structure may also take the form of a mechanical seal, and the end seal structure includes a V-shaped seal member 2 located in the installation through hole 11 and a pressing member 3 provided at one side of the V-shaped seal member 2.

The embodiment of the utility model also provides a submarine cable underwater separation box. The submarine cable underwater separating box comprises a mechanical cabin and the submarine cable cabin penetrating sealing structure, wherein the mechanical cabin comprises a cabin body and a cabin end cover 201 arranged at one end of the cabin body, and the submarine cable cabin penetrating sealing structure is in sealing connection with the mechanical cabin body so as to seal and connect the submarine cable 100 into the mechanical cabin body.

The submarine cable underwater separation box has all technical characteristics and technical effects of the submarine cable cabin penetrating sealing structure, and is not repeated here.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: the first end of the shell is connected with the mechanical cabin body in a sealing way through vulcanized rubber and a fastening bolt; the submarine cable sequentially passes through the sealing cavity and the mounting through hole and then passes into the mechanical cabin body, so that the submarine cable passing through the cabin is realized; by arranging the sealing structures at the two ends of the shell, double sealing is realized, and the sealing effect of the submarine cable cabin penetrating sealing structure is improved; the V-shaped sealing piece is arranged in the sealing cavity, the screw sleeve is rotated to apply a pressing force to the V-shaped sealing piece, and therefore the V-shaped sealing piece can deform to fill gaps between the submarine cable and the shell, and the effect of mechanical sealing is achieved. Compared with the prior art that an O-shaped sealing ring or a cylindrical sealing ring is adopted for sealing, the V-shaped sealing member has larger deformation amount when being compressed due to the structural characteristic of the V shape, so that on one hand, the V-shaped sealing member has larger deformation amount, better sealing effect and easier installation; on the other hand, when the external diameter of submarine cable floats from top to bottom in a certain range, because the deflection of V type sealing member is great, the clearance between submarine cable and the casing still can be filled to V type sealing member, and the adaptability of V type sealing member to the external diameter deviation of submarine cable is stronger to promote submarine cable and wear the sealed effect of cabin seal structure. The arc-shaped groove matched with the shape of the end part of the V-shaped sealing element is formed in the supporting element, so that the V-shaped sealing element can be stably supported.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a sea cable wears cabin seal structure which characterized in that includes:

-a housing (1), the housing (1) being configured to be connectable with a mechanical compartment of a submarine cable (100) to be installed, the housing (1) defining a mounting through hole (11) through which the submarine cable (100) is threaded and a sealing cavity (12) communicating with the mounting through hole (11), the mounting through hole (11) being located at a first end (13) of the housing (1), the sealing cavity (12) being located at a second end (14) of the housing (1) opposite to the first end (13);

at least one V-seal (2) located within the seal cavity (12), the V-seal (2) being configured to be compressively deformable under an external force;

the compressing piece (3) is at least partially positioned outside the sealing cavity (12), and the compressing piece (3) is connected with the shell (1) so as to apply compressing force to the V-shaped sealing piece (2); and

the end sealing structure is positioned in the installation through hole (11), and the compressing piece (3) and the end sealing structure are respectively provided with an assembly through hole for the submarine cable (100) to penetrate out.

2. Sea cable penetration sealing structure according to claim 1, characterized in that the pressing member (3) is a screw sleeve, a threaded section is provided on the inner wall of the sealing cavity (12), and the screw sleeve is in threaded connection with the threaded section, so that the pressing member (3) is movably arranged relative to the housing (1).

3. Sea cable penetration sealing structure according to claim 1, further comprising a support ring (6) arranged in the sealing cavity (12), one side of the support ring (6) being in abutment with a bottom wall (121) of the sealing cavity (12), the other side of the support ring (6) being in abutment with the V-shaped seal (2).

4. A submarine cable penetration sealing structure according to claim 3, wherein the opening of the V-shaped sealing element (2) faces the pressing element (3), the V-shaped sealing element (2) is provided with an end opposite to the opening, and one side of the supporting ring (6) is provided with an arc-shaped groove (61) matched with the shape of the end.

5. Submarine cable penetration sealing structure according to any one of claims 1 to 4, further comprising a pressure ring (7) arranged in the sealing cavity (12), one end of the pressure ring (7) being in abutment with the V-shaped sealing element (2), the other end of the pressure ring (7) being in abutment with the compression element (3).

6. Sea cable penetration sealing structure according to any of claims 1-4, further comprising a heat shrink (5), the heat shrink (5) being wrapped around part of the compression element (3) and part of the housing (1).

7. Submarine cable penetration sealing structure according to any of claims 1 to 4, wherein a mounting groove (151) is provided in the mounting end face (15) of the housing (1), the submarine cable penetration sealing structure further comprising a first sealing member (4), the first sealing member (4) being located in the mounting groove (151) to seal the junction between the housing (1) and the machinery compartment.

8. Submarine cable penetration sealing arrangement according to any of claims 1 to 4, wherein the mounting through hole (11) comprises a first through hole section (111) and a second through hole section (112) which are communicated, the first through hole section (111) and the second through hole section (112) are arranged in sequence along the direction from the first end (13) to the second end (14), and the inner diameter of the first through hole section (111) is smaller than the inner diameter of the second through hole section (112), and the end sealing arrangement is located in the first through hole section (111).

9. Sea cable penetration sealing arrangement according to claim 8, characterized in that the first through-hole section (111) is filled with a vulcanized rubber forming a vulcanized seal between the first end (13) of the housing (1) and the sea cable (100), the vulcanized rubber forming the end sealing arrangement; alternatively, the end sealing structure comprises a V-shaped sealing element (2) positioned in the mounting through hole (11) and a pressing element (3) arranged on one side of the V-shaped sealing element (2).

10. A submarine cable underwater separation box, characterized by comprising a mechanical cabin and a submarine cable penetration sealing structure according to any one of claims 1 to 9, wherein the mechanical cabin comprises a cabin body and a cabin body end cover (201) arranged at one end of the cabin body, and the submarine cable penetration sealing structure is in sealing connection with the mechanical cabin body so as to connect the submarine cable (100) into the mechanical cabin body in a sealing manner.