Self-adaptive sealing structure of deep-sea optical cable and installation method thereof

Abstract

The invention discloses underwater cable sealing equipment, and aims to provide an optical cable sealing structure capable of adaptively adjusting sealing force in a deep sea environment so as to solve the problems of insufficient fixed extrusion force, limited reliability and complex installation and maintenance in the prior art. According to the technical scheme, an elastic sealing structure assembly is arranged in an installation cavity of an outer shell, the elastic sealing structure assembly can be automatically adjusted according to the current seawater pressure borne by the outer side of the outer shell, and sealing of an elastic sealing piece, the installation cavity and an optical cable is achieved by achieving the compression amount of the elastic sealing piece. And with the increase of the sinking depth, the external water pressure is gradually increased, so that the extrusion force of the elastic sealing element is gradually increased to adapt to the water pressure change of different depths, good sealing performance can be kept at any depth, the sealing structure can stably operate for a long time in a deep sea environment, and the underwater optical cable sealing structure is suitable for the technical field of underwater optical cables.

Description

Technical Field

[0001] The present invention relates to an underwater cable sealing device, and more specifically, to a deep-sea optical cable adaptive sealing structure and an installation method thereof. Background Art

[0002] Existing underwater equipment and cable seals usually use stuffing box sealing. This method fills the elastic seal into the cable and the external metal shell cavity, and uses axial extrusion to make the seal expand radially, thereby blocking the fluid. However, in the long-term use of this sealing method in deep water environment, since the seal is subjected to constant extrusion pressure and cannot be adjusted with depth changes, it may cause excessive extrusion pressure on the cable under non-working conditions, thereby causing cable creep, leading to seal failure and water leakage. In addition, the traditional sealing method has high requirements for installation and maintenance, and the operation is complicated and time-consuming. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an optical cable sealing structure that can adaptively adjust the sealing force in a deep-sea environment, so as to solve the problems of insufficient fixed extrusion force, limited reliability and complex installation and maintenance in the prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adaptive sealing structure for a deep-sea optical cable, comprising an outer shell and an optical cable arranged in the outer shell, the outer shell is also provided with an installation cavity, at least two groups of elastic sealing structure components are arranged in the installation cavity, and a separator ring is also provided between each adjacent elastic sealing structure component, the elastic sealing structure component comprises a support ring, a sealing gasket arranged in the support ring, and a sealing retaining ring arranged between the support ring and the sealing gasket, the support ring and the sealing gasket are both provided with through holes for passing the optical cable, and the diameter of the support ring matches the diameter of the installation cavity.

[0005] The present invention is further configured as follows: a limit groove is also provided in the support ring, a mounting plane is provided on one side of the sealing gasket, and a mounting sleeve is provided on the other side, the mounting sleeve and the mounting plane are perpendicular to each other, the size of the mounting plane matches the size of the limit groove, a limit retaining ring is also provided between the sealing gasket and the optical cable, and a buffer slope is also provided on the mounting sleeve.

[0006] The present invention is further configured as follows: a plug is also provided on the outer shell, the position of the plug matches the position of the separating ring, a buffer sleeve is also provided on one side of the outer shell, the buffer sleeve has a protective part arranged on the outside of the outer shell and a fixed part arranged on the inside of the outer shell, and a sealing pressure piece is also provided between the fixed part and the outer shell.

[0007] Preferably, a sealing strip is further provided on the inner wall of the sealing gasket, and the sealing strip is configured to increase the sealing performance between the sealing gasket and the optical cable, and the material of the sealing gasket is elastic rubber.

[0008] The present invention is further configured as follows: a water diversion channel is also provided on the end surface of the outer shell on which the buffer sleeve is provided.

[0009] The present invention is further configured as follows: an annular groove is further provided on the outer wall of the support ring, and a sealing ring is provided in the annular groove.

[0010] The present invention is further configured as follows: the outer diameter of the separation ring matches the inner diameter of the installation cavity, and the separation ring is evenly provided with a plurality of detection holes along its circumference, and the detection holes are used to detect the assembly quality of the elastic sealing structure component.

[0011] The present application also provides a method for installing a deep-sea optical cable adaptive sealing structure, characterized in that the installation method comprises the following steps: S1, selecting an outer shell: selecting an outer shell of corresponding size according to the size of the optical cable and the installation depth requirement; S2. Install the optical cable: insert the optical cable into the outer shell and fix it; S3. Install the support ring: install a support ring on the outer shell of the optical cable, and set a sealing ring on the ring groove of the support ring, and push the support ring into the installation cavity of the outer shell along the length direction of the optical cable to fix the support ring and the installation cavity; S4, install the sealing gasket: install a sealing retainer ring and a sealing gasket on the outer shell of the optical cable, push the sealing retainer ring and the sealing gasket into the installation cavity of the outer shell along the length direction of the optical cable, and make the installation plane of the sealing gasket and the limiting groove of the support ring mutually engage and fix; S5. Install the separator ring: install the separator ring on the outer shell of the optical cable and push the separator ring into the installation cavity of the outer shell along the length direction of the optical cable and fix it; S6. Install the second set of elastic sealing structure components: install the support ring and the sealing gasket in the same way, and fix the support ring and the sealing gasket in the installation cavity; S7, installing the sealing pressing piece: inserting the sealing pressing piece into the installation cavity of the outer shell so that the sealing pressing piece presses the elastic sealing structure component in the installation cavity; S8. Install the buffer sleeve: insert the optical cable into the buffer sleeve, and insert the fixed part of the buffer sleeve into the sealing pressing piece and fix it; S9. Install the sealing cover: install the sealing cover on the outer shell so that the installation cavity of the outer shell remains sealed, thus completing the overall installation.

[0012] By adopting the above technical scheme, the beneficial effects are as follows: 1. By providing an installation cavity in the outer shell, an elastic sealing structure component is provided in the installation cavity, and the elastic sealing structure component can be automatically adjusted according to the current seawater pressure on the outside of the outer shell, and the sealing of the elastomeric seal, the installation cavity and the optical cable is achieved by realizing the compression amount of the elastic seal. At the same time, after the above sealing structure is placed in water and sinks, the external water pressure is introduced through the water diversion channel arranged on the end face of the outer shell. At the same time, with the increase of the sinking depth, the external water pressure gradually increases, so that the extrusion force of the elastic seal gradually increases to adapt to the water pressure changes at different depths, ensuring that good sealing performance can be maintained at any depth, so that the sealing structure can operate stably for a long time in a deep-sea environment, and the installation and maintenance process is relatively simple, which greatly improves the work efficiency and reliability.

[0013] 2. Furthermore, at least two groups of the elastic sealing structure components are arranged in the installation cavity, and the elastic sealing structure components include a support ring, a sealing gasket arranged in the support ring, and a sealing retaining ring arranged between the support ring and the sealing gasket, wherein the support ring and the sealing retaining ring form a seal between the elastic sealing structure and the installation cavity, and the support ring and the sealing gasket are both provided with through holes for passing the optical cable, and after the optical cable passes through the support ring and the sealing gasket, a seal is formed with the optical cable through a sealing strip arranged on the inner wall of the sealing gasket, wherein a limiting groove for installing the sealing gasket is provided in the support ring, and the support ring provides axial sealing for the sealing gasket inside it, and a limiting retaining ring is also provided between the sealing gasket and the optical cable, and the limiting retaining ring prevents the sealing gasket from being extruded or deformed under high pressure environment, thereby preventing the sealing gasket from suffering from "gap bite phenomenon".

[0014] 3. At the same time, the sealing structure is mainly achieved by the support ring and the sealing gasket. Specifically, the sealing gasket needs to respond quickly to the water pressure during operation and act on the circumference of the optical cable in a timely manner. Therefore, the sealing gasket needs to be sufficiently elastic. Therefore, it is made of a rubber material with low hardness and good elasticity during design. At the same time, during the installation process, the optical cable needs to be initially sealed by the sealing gasket. Therefore, the inner wall of the sealing gasket is provided with a sealing strip for improving the sealing effect with the optical cable, so that when the sealing gasket is sleeved on the outer side of the optical cable, the sealing gasket is improved by the multi-layer sealing strips on its inner wall. The sealing effect is good, and the sealing gasket has a mounting plane connected to the support ring and a mounting sleeve connected to the optical cable. The overall structure of the sealing gasket is a "T"-shaped sleeve, and the mounting sleeve part of the sealing gasket is provided with a buffer slope. The sealing gasket is conveniently connected to the optical cable and can generate a radial locking force on the sealing gasket after being subjected to external water pressure. The sealing gasket is arranged in the limiting groove of the support ring through the mounting plane, and the overall contact area is large, so that the axial supporting force generated by the support ring can act on a larger flat plane, with a good supporting effect, which effectively prevents the sealing gasket from falling off.

[0015] 4. Furthermore, when installing the above-mentioned sealing structure, in order to reduce the difficulty of assembly, improve the overall structural strength after assembly, and improve the reliability of the sealing structure in deep-sea environments, the size of the outer shell is selected before assembly. Specifically, the working environment indicators of the environment are detected before assembly, including the working depth and the working environment temperature, and the optimal assembly components are selected according to the working environment indicators, thereby avoiding waste of resources and ensuring the stability of the sealing structure working in the environment. Furthermore, the optical cable and the elastic sealing structure assembly are sequentially installed inside the installation cavity, and because the inner diameter of the installation cavity matches the outer diameter of the support ring, the support ring has a good fixing effect in the installation cavity. At the same time, the support ring is provided with an annular groove, and a sealing ring is arranged in the annular groove, so that the support ring supports the inside of the installation cavity while sealing the connection between the support ring and the installation cavity through the sealing ring, and then the sealing gasket is inserted into the limiting groove of the support ring. The sealing gasket and the support While the ring is fixed, the sealing gasket can be sleeved on the outside of the optical cable to ensure the sealing of the optical cable and the elastic sealing structure component. At the same time, the optical cable is fixed by the installation sleeve part of the sealing gasket, and the sealing and stability are good. At the same time, the elastic sealing structure component is arranged in 2 groups in the installation cavity, and the adjacent elastic sealing structure components are separated by sealing retaining rings to prevent wear between the elastic sealing structure components. At the same time, multiple groups of elastic sealing structure components can further increase the overall structural strength and prevent the sealing structure from being deformed and damaged by large water pressure. In addition, a sealing pressure piece is arranged in the outer shell to press the elastic sealing structure component in the installation cavity, so that the overall structure is compact, and the axial fixation of the elastic sealing structure component and the separation ring in the installation cavity is realized. At the same time, a buffer sleeve is provided in the sealing pressure piece, and the protective part of the buffer sleeve is sleeved on the outside of the optical cable to absorb and disperse the stress that may be generated at the connection point of the optical cable entering the installation cavity, thereby reducing damage to the inside of the optical cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural cross-sectional view of an embodiment of a deep-sea optical cable adaptive sealing structure and an installation method thereof according to the present invention; Figure 2 It is a structural schematic diagram of a support ring and a sealing gasket of an embodiment of a deep-sea optical cable adaptive sealing structure and an installation method thereof of the present invention; Figure 3 A schematic diagram of the specific structure of a separator ring of an embodiment of a deep-sea optical cable adaptive sealing structure and an installation method thereof according to the present invention; Figure 4 This is a flow chart of an installation method of an embodiment of a deep-sea optical cable adaptive sealing structure and an installation method thereof of the present invention; The reference numerals in the figure are: 1. outer shell; 2. installation cavity; 3. elastic sealing structure component; 4. separation ring; 41. ring groove; 42. sealing ring; 43. detection hole; 5. support ring; 51. limit groove; 6. sealing gasket; 61. installation plane; 62. installation sleeve; 63. limit retaining ring; 64. buffer slope; 65. sealing strip; 7. sealing retaining ring; 8. through hole; 9. plug; 10. buffer sleeve; 101. protective part; 102. fixed part; 11. water diversion channel. DETAILED DESCRIPTION

[0017] Reference Figures 1 to 4 The present invention further describes an embodiment of a deep-sea optical cable adaptive sealing structure and an installation method thereof.

[0018] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0019] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0020] A deep-sea optical cable adaptive sealing structure comprises an outer shell 1 and an optical cable arranged in the outer shell 1, wherein the outer shell 1 is further provided with an installation cavity 2, wherein at least two groups of elastic sealing structure components 3 are arranged in the installation cavity 2, and a separator ring 4 is further arranged between each adjacent elastic sealing structure component 3, wherein the elastic sealing structure component 3 comprises a support ring 5, a sealing gasket 6 arranged in the support ring 5, and a sealing retaining ring 7 arranged between the support ring 5 and the sealing gasket 6, wherein the support ring 5 and the sealing gasket 6 are both provided with a through hole 8 for passing the optical cable, and the diameter of the support ring 5 matches the diameter of the installation cavity 2.

[0021] A limiting groove 51 is also provided in the support ring 5, a mounting plane 61 is provided on one side of the sealing gasket 6, and a mounting sleeve 62 is provided on the other side, the mounting sleeve 62 and the mounting plane 61 are perpendicular to each other, the size of the mounting plane 61 matches the size of the limiting groove 51, a limiting retaining ring 63 is also provided between the sealing gasket 6 and the optical cable, and a buffer slope 64 is also provided on the mounting sleeve 62.

[0022] The outer shell 1 is also provided with a plug 9, the position of the plug 9 matches the position of the separating ring 4, and a buffer sleeve 10 is also provided on one side of the outer shell 1. The buffer sleeve 10 has a protective part 101 arranged on the outside of the outer shell 1 and a fixed part 102 arranged on the inside of the outer shell 1. A sealing pressure piece is also provided between the fixed part 102 and the outer shell 1.

[0023] Preferably, the inner wall of the sealing gasket 6 is further provided with a sealing strip 65, and the sealing strip 65 is configured to increase the sealing performance between the sealing gasket 6 and the optical cable, and the material of the sealing gasket 6 is elastic rubber.

[0024] The end surface of the outer shell 1 on which the buffer sleeve 10 is arranged is also provided with a water diversion channel 11 .

[0025] An annular groove 41 is further provided on the outer wall of the support ring 5 , and a sealing ring 42 is provided in the annular groove 41 .

[0026] The outer diameter of the separation ring 4 matches the inner diameter of the installation cavity 2 , and the separation ring 4 is evenly provided with a plurality of detection holes 43 along its circumference. The detection holes 43 are used to detect the assembly quality of the elastic sealing structure component 3 .

[0027] The present application also provides a method for installing a deep-sea optical cable adaptive sealing structure, characterized in that the installation method comprises the following steps: S1, selecting an outer shell 1: selecting an outer shell 1 of a corresponding size according to the size of the optical cable and the depth requirement of the installation; S2. Install the optical cable: insert the optical cable into the outer shell 1 and fix it; S3, installing the support ring 5: installing the support ring 5 on the outer shell of the optical cable, and setting a sealing ring 42 on the ring groove 41 of the support ring 5, pushing the support ring 5 into the installation cavity 2 of the outer shell 1 along the length direction of the optical cable, so that the support ring 5 is fixed to the installation cavity 2; S4, installing the sealing gasket 6: installing a sealing retainer ring 7 and a sealing gasket 6 on the outer jacket of the optical cable, pushing the sealing retainer ring 7 and the sealing gasket 6 into the installation cavity 2 of the outer shell 1 along the length direction of the optical cable, and making the installation plane 61 of the sealing gasket 6 and the limiting groove 51 of the support ring 5 mutually engage and fix; S5, installing the separator ring 4: installing the separator ring 4 on the outer shell of the optical cable and pushing the separator ring 4 into the installation cavity 2 of the outer shell 1 along the length direction of the optical cable and fixing it; S6, installing the second set of elastic sealing structure components 3: installing the support ring 5 and the sealing gasket 6 in the same way, and fixing the support ring 5 and the sealing gasket 6 in the installation cavity 2; S7, installing the sealing pressing piece: inserting the sealing pressing piece into the installation cavity 2 of the outer shell 1, so that the sealing pressing piece presses the elastic sealing structure component 3 in the installation cavity 2; S8, installing the buffer sleeve 10: inserting the optical cable into the buffer sleeve 10, and inserting the fixing portion 102 of the buffer sleeve 10 into the sealing pressing piece and fixing it; S9. Install the sealing cover: install the sealing cover on the outer shell 1 so that the installation cavity 2 of the outer shell 1 remains sealed, thus completing the overall installation.

[0028] By providing an installation cavity 2 in the outer shell 1, an elastic sealing structure component 3 is provided in the installation cavity 2, and the elastic sealing structure component 3 can be automatically adjusted according to the current seawater pressure on the outer side of the outer shell 1, and the sealing of the elastomeric seal, the installation cavity 2 and the optical cable is achieved by realizing the compression amount of the elastic seal. At the same time, after the above-mentioned sealing structure is placed in water and sinks, external water pressure is introduced through the water diversion channel 11 arranged on the end face of the outer shell 1. At the same time, with the increase of the sinking depth, the external water pressure gradually increases, so that the extrusion force of the elastic seal gradually increases to adapt to the water pressure changes at different depths, ensuring that good sealing performance can be maintained at any depth, so that the sealing structure can operate stably for a long time in the deep sea environment, and the installation and maintenance process is relatively simple, which greatly improves the work efficiency and reliability.

[0029] Furthermore, at least two groups of the elastic sealing structure components 3 are arranged in the installation cavity 2, and the elastic sealing structure components 3 include a support ring 5, a sealing gasket 6 arranged in the support ring 5, and a sealing retaining ring 7 arranged between the support ring 5 and the sealing gasket 6, wherein the support ring 5 and the sealing retaining ring 7 form a seal between the elastic sealing structure and the installation cavity 2, and the support ring 5 and the sealing gasket 6 are both provided with a through hole 8 for passing the optical cable, after the optical cable passes through the support ring 5 and the sealing gasket 6, a sealing strip 65 arranged on the inner wall of the sealing gasket 6 forms a seal with the optical cable, wherein the support ring 5 is provided with a limiting groove 51 for installing the sealing gasket 6, the support ring 5 provides axial sealing for the sealing gasket 6 inside it, and a limiting retaining ring 63 is also provided between the sealing gasket 6 and the optical cable, the limiting retaining ring 63 prevents the sealing gasket 6 from being extruded or deformed under a high-pressure environment, and prevents the sealing gasket 6 from having a "gap bite phenomenon".

[0030] At the same time, the sealing of the sealing structure is mainly achieved by the support ring 5 and the sealing gasket 6. Specifically, the sealing gasket 6 needs to respond quickly to the water pressure during operation and act on the circumference of the optical cable in a timely manner. Therefore, the sealing gasket 6 needs to have sufficient elasticity. Therefore, it is made of a rubber material with low hardness and good elasticity during design. At the same time, during the installation process, the optical cable needs to be initially sealed by the sealing gasket 6. Therefore, the inner wall of the sealing gasket 6 is provided with a sealing strip 65 for improving the sealing effect with the optical cable, so that when the sealing gasket 6 is sleeved on the outside of the optical cable, the sealing effect is improved by the multi-layer sealing strips 65 on its inner wall, and Furthermore, the sealing gasket 6 has a mounting plane 61 connected to the support ring 5 and a mounting sleeve 62 connected to the optical cable. The overall structure of the sealing gasket 6 is a "T"-shaped sleeve, and the mounting sleeve 62 of the sealing gasket 6 is provided with a buffer slope 64. The sealing gasket 6 is conveniently connected to the optical cable and can generate a radial locking force on the sealing gasket 6 after being subjected to external water pressure. The sealing gasket 6 is arranged in the limiting groove 51 of the support ring 5 through the mounting plane 61, and the overall contact area is large, so that the axial supporting force generated by the support ring 5 can act on a larger flat plane, with a good supporting effect, which effectively prevents the sealing gasket 6 from falling off.

[0031] Furthermore, when installing the above-mentioned sealing structure, in order to reduce the difficulty of assembly, improve the overall structural strength after assembly, and at the same time improve the reliability of the sealing structure in a deep-sea environment, the size of the outer shell 1 is selected before assembly. Specifically, the working environment indicators of the environment are detected before assembly, including the working depth and the working environment temperature, and the optimal assembly components are selected according to the working environment indicators, thereby avoiding waste of resources and ensuring the stability of the sealing structure working in the environment. Furthermore, the optical cable and the elastic sealing structure assembly 3 are sequentially installed inside the installation cavity 2, and because the inner diameter of the installation cavity 2 matches the outer diameter of the support ring 5, the support ring 5 has a good fixing effect in the installation cavity 2. At the same time, the support ring 5 has an annular groove 41, and a sealing ring 42 is arranged in the annular groove 41, so that the support ring 5 supports the inside of the installation cavity 2 while sealing the connection between the support ring 5 and the installation cavity 2 through the sealing ring 42, and then the sealing gasket 6 is inserted into the limiting groove 51 of the support ring 5, and the sealing gasket 6 and the support ring 5 is fixed, and the sealing gasket 6 can be sleeved on the outside of the optical cable to ensure the sealing of the optical cable and the elastic sealing structure component 3. At the same time, the optical cable is fixed by the installation sleeve 62 of the sealing gasket 6, and the sealing and stability are good. At the same time, the elastic sealing structure component 3 is set as 2 groups in the installation cavity 2, and the adjacent elastic sealing structure components 3 are separated by the sealing retaining ring 7 to prevent the elastic sealing structure components 3 from being worn. At the same time, multiple groups of elastic sealing structure components 3 can further increase the overall structural strength and prevent the sealing structure from being deformed and damaged by the influence of large water pressure. In addition, by arranging a sealing pressing piece in the outer shell 1 to press the elastic sealing structure component 3 in the installation cavity 2, the overall structure is compact, and the axial fixation of the elastic sealing structure component 3 and the separation ring 4 in the installation cavity 2 is realized. At the same time, a buffer sleeve 10 is provided in the sealing pressing piece, and the protective part 101 of the buffer sleeve 10 is sleeved on the outside of the optical cable to absorb and disperse the stress that may be generated at the connection point of the optical cable entering the installation cavity 2, thereby reducing damage to the inside of the optical cable.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A deep-sea optical cable adaptive sealing structure, comprising an outer shell (1) and an optical cable arranged in the outer shell (1), characterized in that: The outer shell (1) is further provided with an installation cavity (2), the installation cavity (2) is provided with at least two groups of elastic sealing structure components (3), and a separation ring (4) is further provided between each adjacent elastic sealing structure component (3). The elastic sealing structure component (3) comprises a support ring (5), a sealing gasket (6) arranged in the support ring (5), and a sealing retaining ring (7) arranged between the support ring (5) and the sealing gasket (6), and the support ring (5) and the sealing gasket (6) are both provided with a through hole (8) for passing an optical cable, and the diameter of the support ring (5) matches the diameter of the installation cavity (2).

2. The deep-sea optical cable adaptive sealing structure according to claim 1, characterized in that: A limiting groove (51) is also provided in the support ring (5); a mounting plane (61) is provided on one side of the sealing gasket (6) and a mounting sleeve (62) is provided on the other side; the mounting sleeve (62) and the mounting plane (61) are perpendicular to each other; the size of the mounting plane (61) matches the size of the limiting groove (51); a limiting retaining ring (63) is also provided between the sealing gasket (6) and the optical cable; and a buffer inclined surface (64) is also provided on the mounting sleeve (62).

3. The deep-sea optical cable adaptive sealing structure according to claim 1, characterized in that: The outer shell (1) is also provided with a plug (9), the position of the plug (9) matches the position of the separation ring (4), and a buffer sleeve (10) is also provided on one side of the outer shell (1), the buffer sleeve (10) has a protective part (101) arranged on the outside of the outer shell (1) and a fixed part (102) arranged on the inside of the outer shell (1), and a sealing pressing piece is also provided between the fixed part (102) and the outer shell (1).

4. The deep-sea optical cable adaptive sealing structure according to claim 2, characterized in that: The inner wall of the sealing gasket (6) is also provided with a sealing strip (65), and the sealing strip (65) is configured to increase the sealing performance between the sealing gasket (6) and the optical cable. The material of the sealing gasket (6) is elastic rubber.

5. The deep-sea optical cable adaptive sealing structure according to claim 1, characterized in that: The end surface of the outer shell (1) on which the buffer sleeve (10) is arranged is also provided with a water diversion channel (11).

6. The deep-sea optical cable adaptive sealing structure according to claim 1, characterized in that: An annular groove (41) is also provided on the outer wall of the support ring (5), and a sealing ring (42) is provided in the annular groove (41).

7. The deep-sea optical cable adaptive sealing structure according to claim 1, characterized in that: The outer diameter of the separation ring (4) matches the inner diameter of the installation cavity (2), and the separation ring (4) is evenly provided with a plurality of detection holes (43) along its circumference, and the detection holes (43) are used to detect the assembly quality of the elastic sealing structure component (3).

8. A method for installing the deep-sea optical cable adaptive sealing structure according to any one of claims 1 to 7, characterized in that: The installation method comprises the following steps: S1, selecting an outer shell (1): selecting an outer shell (1) of corresponding size according to the size of the optical cable and the depth requirement of the installation; S2. Install the optical cable: insert the optical cable into the outer shell (1) and fix it; S3, installing the support ring (5): installing the support ring (5) on the outer shell of the optical cable, and setting a sealing ring (42) on the ring groove (41) of the support ring (5), pushing the support ring (5) into the installation cavity (2) of the outer shell (1) along the length direction of the optical cable, so that the support ring (5) and the installation cavity (2) are fixed; S4, installing the sealing gasket (6): installing a sealing retaining ring (7) and a sealing gasket (6) on the outer shell of the optical cable, pushing the sealing retaining ring (7) and the sealing gasket (6) into the installation cavity (2) of the outer shell (1) along the length direction of the optical cable, and making the installation plane (61) of the sealing gasket (6) and the limiting groove (51) of the support ring (5) mutually engage and fix; S5. Installing the separation ring (4): installing the separation ring (4) on the outer shell of the optical cable and pushing the separation ring (4) into the installation cavity (2) of the outer shell (1) along the length direction of the optical cable and fixing it; S6. Install the second set of elastic sealing structure components (3): install the support ring (5) and the sealing gasket (6) in the same way, and fix the support ring (5) and the sealing gasket (6) in the installation cavity (2); S7, installing the sealing pressing piece: inserting the sealing pressing piece into the installation cavity (2) of the outer shell (1), so that the sealing pressing piece presses the elastic sealing structure component (3) in the installation cavity (2); S8, installing the buffer sleeve (10): inserting the optical cable into the buffer sleeve (10), and inserting the fixing portion (102) of the buffer sleeve (10) into the sealing pressing piece and fixing it; S9. Install the sealing cover: install the sealing cover on the outer shell (1) so that the installation cavity (2) of the outer shell (1) remains sealed, thus completing the overall installation.

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