Underwater cable sealing assembly and cabin-penetrating sealing device

Abstract

The invention relates to the field of cable sealing, in particular to an underwater cable sealing assembly and a cabin penetrating sealing device, which comprise a flexible sealing ring and a lining ring. The flexible sealing ring is tightly arranged between the outer portion of an underwater cable and an underwater pipe body in a sleeving mode, and the cable can penetrate through the underwater pipe body. The lining ring is embedded in the sealing ring and is made of a temperature deformation material which shrinks below a preset temperature, and the shrinkage amplitude of the temperature deformation material is larger than that of the sealing ring; the preset temperature corresponds to the temperature of a preset underwater depth, so that the lining ring can contract below the preset underwater depth to hoop the sealing ring on the cable; wherein the lining ring is made of a copper-based memory alloy. According to the underwater cable sealing assembly and the cabin-penetrating sealing device, the sealing material can make contact with the cable more tightly below the preset underwater depth, and the probability that the sealing material is disengaged from the cable due to temperature change can be reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of cable sealing, in particular to an underwater cable sealing assembly and a cabin-penetrating sealing device. BACKGROUND

[0002] Sealing of underwater cables, such as cables of underwater vehicles from inside a cabin to outside the cabin, needs to be sealed between the inside of the cabin and the outside environment. However, as the underwater vehicle travels, the water depth increases, and the temperature encountered by the underwater cable also changes. Due to the temperature change, the underwater cable and its sealing material often cannot expand or shrink synchronously, which causes the underwater cable and its sealing material to easily separate, resulting in water leakage between the underwater cable and its sealing material, and further leading to sealing failure between the underwater cable and its sealing material and causing an electric leakage accident, which poses a great safety risk. SUMMARY

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present disclosure is to provide an underwater cable sealing assembly and a cabin-penetrating sealing device. Below a preset underwater depth, the sealing material can more closely contact the cable, which is conducive to reducing the probability of the sealing material separating from the cable due to temperature changes.

[0004] The present disclosure provides an underwater cable sealing assembly, comprising: a flexible sealing ring, which is tightly sleeved between the outside of an underwater cable and an underwater pipe body through which the cable is arranged; and an inner liner ring, which is embedded in the sealing ring and is implemented as a temperature deformation material that shrinks below a preset temperature and has a shrinkage amplitude greater than that of the sealing ring; the preset temperature corresponds to the temperature of a preset underwater depth, so that the inner liner ring can shrink below the preset underwater depth to tighten the sealing ring on the cable; wherein the inner liner ring is implemented as a copper-based memory alloy.

[0005] According to some embodiments of the present disclosure, the preset underwater depth is 300m-1000m underwater, and the preset temperature is 5℃-10℃.

[0006] According to some embodiments of the present disclosure, the material of the sealing ring is the same as the material of the outer skin of the cable.

[0007] According to some embodiments of the present disclosure, further comprising: a negative expansion ring, which is embedded in the sealing ring and sleeved outside the inner liner ring, and has a strength greater than that of the sealing ring and is implemented as a temperature deformation material that can expand with a decrease in temperature below the preset temperature.

[0008] According to some embodiments of the present disclosure, the negative expansion ring is implemented as an alloy material with a negative expansion coefficient.

[0009] According to some embodiments provided by the present disclosure, the sealing ring is made of rubber / plastic material.

[0010] According to some embodiments provided by the present disclosure, the inner liner ring is integrally formed inside the sealing ring.

[0011] The present disclosure also provides a through-hull sealing device, comprising: a through-hull pipe body provided with a pipe cavity extending in the axial direction and for accommodating a cable, the pipe cavity comprising an in-hull segment and an out-hull segment; and at least one underwater cable sealing assembly as claimed in any one of the above, wherein the underwater cable sealing assembly is filled in the in-hull segment or the out-hull segment.

[0012] According to some embodiments provided by the present disclosure, a protrusion is arranged between the in-hull segment and the out-hull segment for abutting against the underwater cable sealing assembly; the through-hull sealing device further comprises: at least one sealing filler arranged in the in-hull segment or the out-hull segment and located on a side of the underwater cable sealing assembly away from the protrusion.

[0013] According to some embodiments provided by the present disclosure, there are at least two underwater cable sealing assemblies and at least two sealing fillers; the at least two underwater cable sealing assemblies and the at least two sealing fillers are respectively filled in the in-hull segment and the out-hull segment.

[0014] Advantages:

[0015] (1) The underwater cable sealing assembly and the through-hull sealing device of the present disclosure can make the sealing material more closely contact the cable below the preset underwater depth, which is conducive to reducing the probability of the sealing material separating from the cable due to temperature change.

[0016] (2) The underwater cable sealing assembly and the through-hull sealing device of the present disclosure can make the negative expansion ring abut against the inner liner ring as the temperature decreases, which is conducive to the inner liner ring tightly clamping the inner part of the sealing ring, and on the other hand, the negative expansion ring can also counteract the contraction of at least part of the outer part of the sealing ring and support the outer part, which is conducive to reducing the probability of the outer part of the sealing ring separating from the inner wall of the underwater pipe body. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a top view of the underwater cable sealing assembly of an embodiment of the present disclosure.

[0018] Figure 2 is a sectional view of the underwater cable sealing assembly of an embodiment of the present disclosure along a section line.

[0019] Figure 3 is a sectional view of the underwater cable sealing assembly of an embodiment of the present disclosure along another section line.

[0020] Figure 4is a schematic view of an underwater cable sealing assembly of an embodiment of the present disclosure for sealing an environment.

[0021] Figure 5 is a cross-sectional view of an underwater cable sealing assembly of yet another embodiment of the present disclosure at a cross-sectional line.

[0022] Figure 6 is a cross-sectional view of an underwater cable sealing assembly of yet another embodiment of the present disclosure at another cross-sectional line.

[0023] Figure 7 is a schematic view of an underwater cable sealing assembly of yet another embodiment of the present disclosure for sealing an environment.

[0024] Reference Signs:

[0025] underwater cable sealing assembly 100;

[0026] sealing ring 11; inner portion 111; outer portion 112;

[0027] inner liner ring 12;

[0028] negative expansion ring 13;

[0029] penetration tube 800; in-cabin section 81; out-cabin section 82; protrusion 83; sealing packing 84; compression screw 85; first compression screw 85a; second compression screw 85b; spacer 86; first spacer 86a; second spacer 86b;

[0030] cable 900. DETAILED DESCRIPTION

[0031] The objectives, advantages and effects of the present disclosure can be easily understood by those skilled in the art with the messages disclosed in the present disclosure. The present disclosure can also be implemented or applied in other different embodiments or modules, and the details in the present disclosure can be modified or changed according to different views and modules without departing from the spirit of the present disclosure. It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0032] The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can easily implement the present disclosure. The present disclosure can be embodied in various different forms, and is not limited to the embodiments described herein.

[0033] In the description of the present disclosure, the expressions "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like mean that the specific feature, structure, material or characteristic accompanying the embodiments or examples is included in at least one embodiment or example of the present disclosure. Also, the specific feature, structure, material or characteristic accompanying an embodiment or example can be combined in an appropriate manner with the specific feature, structure, material or characteristic accompanying other embodiments or examples and other embodiments or examples in the present disclosure. In addition, the embodiments or examples and the features of the embodiments or examples expressed in the present disclosure can be combined and combined by those skilled in the art without contradiction.

[0034] In addition, the terms "first", "second", etc. are used only for the purpose of description and should not be construed as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "a group" is two or more, unless specifically limited.

[0035] In order to clearly illustrate the present disclosure, devices irrelevant to the description are omitted, and the same reference numerals are given to the same or similar constituent elements throughout the description.

[0036] Throughout the description, when it is said that a device is "connected" to another device, it includes not only the case of "direct connection", but also the case of "indirect connection" in which other elements are placed therebetween. In addition, when it is said that a device "includes" a certain constituent element, unless specifically stated to the contrary, other constituent elements are not excluded, but it means that other constituent elements can also be included.

[0037] Although the terms first, second, etc. are used herein to refer to various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first interface and a second interface, etc. are indicated. Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include plural forms, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises", "comprising", "includes" and / or "including", mean the presence of stated features, steps, operations, elements, modules, items, species, and / or groups but do not preclude the presence or addition of one or more other features, steps, operations, elements, modules, items, species, and / or groups. The terms "or" and "and / or" as used herein are to be interpreted as inclusive, or meaning either or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". This exception occurs only when the combination of elements, functions, steps or operations is inherently mutually exclusive.

[0038] The professional terms used herein are used only to refer to specific embodiments and are not intended to limit the present disclosure. The singular form used herein, unless the context clearly indicates the contrary, also includes the plural form. In the specification, the meaning of "include" is to specify a certain feature, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other features, regions, integers, steps, operations, elements, and / or components.

[0039] Although not differently defined, the technical terms and scientific terms used herein include the technical terms and scientific terms commonly used in the art to which the present disclosure belongs, and all terms have the same meaning as generally understood by a person skilled in the art. The terms defined in the commonly used dictionary are additionally explained to have the meaning consistent with the related technical literature and the currently prompted message, and are not over-interpreted as ideal or very formal meanings unless defined.

[0040] The underwater seal, for example, the cable from the cabin to the outside of the underwater vehicle needs to be sealed between the cabin and the outside environment. However, as the underwater vehicle travels, the water depth increases, and the water temperature encountered by the underwater cable also changes constantly. Due to the change in temperature, the underwater cable and its sealing material often cannot expand or shrink synchronously, thereby causing the underwater cable and its sealing material to easily separate, resulting in water leakage between the underwater cable and its sealing material, and further causing the underwater cable and its sealing material to easily seal failure and cause an electric leakage accident, which has a great safety risk.

[0041] In view of this, the present disclosure provides an underwater cable sealing assembly. The sealing material can more closely contact the cable below the preset underwater depth, which is beneficial to reduce the probability of the sealing material separating from the cable due to temperature changes.

[0042] Figure 1 is a top view of an underwater cable sealing assembly 100 according to an embodiment of the present disclosure. Figure 2 is a sectional view of the underwater cable sealing assembly 100 according to an embodiment of the present disclosure along a section line. Figure 3 is a sectional view of the underwater cable sealing assembly 100 according to an embodiment of the present disclosure along another section line. Referring to Figures 1 to 3 The underwater cable sealing assembly 100 provided by the embodiment of the present disclosure includes a flexible sealing ring 11 and an inner liner ring 12.

[0043] Figure 4 is a schematic view of the underwater cable sealing assembly 100 according to an embodiment of the present disclosure used for sealing the environment. Referring to Figures 2 to 4The flexible sealing ring 11 is tightly sleeved between the outer side of the underwater cable 900 and the underwater pipe body through which the cable 900 passes. Thus, the inner side of the flexible sealing ring 11 can be in close contact with the outer side of the cable 900, and the flexibility can help ensure that the sealing ring 11 can be sleeved outside the cable 900 without damaging the outer sheath of the cable 900.

[0044] Optionally, the flexible sealing ring 11 is in interference fit with the cable 900, and the inner diameter of the sealing ring 11 is slightly smaller than the cable 900. As an example, for an underwater cable, the outer diameter of the sealing ring 11 is set to be in the range of 16mm-64mm, the inner diameter is set to be in the range of 8mm-46mm, the height is set to be in the range of 7mm-55mm, the ring width is set to be in the range of 4mm-9mm, and the edge chamfer is 0.5mm-2mm. It can be understood that the size of the sealing ring 11 of the embodiment of the present disclosure includes but is not limited to this, and can be adjusted adaptively according to the size of the cable.

[0045] Optionally, the sealing ring 11 can be made of the same material as the outer sheath material of the cable 900 or a material similar to the thermal expansion and contraction characteristics of the outer sheath of the cable 900, so that the deformation trend of the sealing part is consistent when the temperature changes. As an example, the material of the sealing ring 11 is the same as the material of the outer sheath of the cable 900.

[0046] For example, for the cable, when the outer sheath of the cable is rubber, the material of the sealing ring 11 is preferably rubber. When the outer sheath of the cable is plastic, the material of the sealing ring 11 is preferably plastic. Thus, when the ambient temperature changes with the change of water depth, the deformation of the part of the sealing ring 11 contacting the outer sheath of the cable 900 and the outer sheath of the cable 900 due to thermal expansion and contraction can be consistent, which is conducive to keeping the sealing ring 11 in close contact with the outer sheath of the cable 900 when the ambient temperature changes due to the change of water depth, and is conducive to ensuring the sealing reliability of the sealing ring 11.

[0047] The inner liner ring 12 is embedded in the sealing ring 11. Thus, the sealing ring 11 has an inner layer part 111 inside the inner liner ring 12 and an outer layer part 112 outside the inner liner ring 12. The inner liner ring 12 is implemented to shrink below a preset temperature and the shrinkage amplitude is greater than the temperature deformation material of the sealing ring 11. The preset temperature corresponds to the temperature of a preset underwater depth, so that the inner liner ring 12 can shrink below the preset underwater depth to clamp the sealing ring 11 to the cable 900.

[0048] Optionally, the preset underwater depth is 300m~1000m below the water surface, and the preset temperature is 5℃~10℃ below the water surface. That is, when the underwater vehicle is sailing, and the cable 900 and the underwater cable sealing assembly 100 reach the underwater depth of 300m~1000m and the water temperature of 5℃~10℃, the inner liner ring 12 will change phase and shrink due to the environmental temperature reaching 5℃~10℃, and the shrinkage amplitude of the inner liner ring 12 is greater than that of the sealing ring 11, so that the radial dimension of the inner liner ring 12, i.e. the outer diameter and the inner diameter, is reduced, and the reduction amplitude is greater than that of the sealing ring 11. Thus, the inner liner ring 12 which shrinks greatly exerts pressure on the inner layer part 111 of the sealing ring 11 along the entire circumference, so that the flexible inner layer part 111 tightly embraces the cable 900, which helps to ensure that the preset depth is reached, and the inner side of the sealing ring 11 can more closely contact the outer side of the cable 900, thereby reducing the probability of separation between the cable 900 and the sealing ring 11. For example, the preset underwater depth can be 300m~400m, 400m~500m, 500m~600m, 600m~700m, 700m~800m, 800m~900m, 900m~1000m. The preset temperature can be 5℃~6℃, 6℃~7℃, 7℃~8℃, 8℃~9℃, 9℃~10℃.

[0049] For example, the inner liner ring 12 can be a memory alloy part, for example, a copper-based memory alloy. For example, when the sealing ring 11 is a rubber / plastic sealing ring 11, the inner liner ring 12 is implemented as a copper-based memory alloy, for example, a Cu-Zn-Al memory alloy, which restores the memory shape and has a shrinkage rate greater than 3% when the temperature reaches 5℃~10℃, which is greater than the linear cold shrinkage rate of the rubber / plastic sealing ring 11, so that the reduction amplitude of the radial dimension of the inner liner ring 12 is greater than that of the sealing ring 11, thereby causing the inner liner ring 12 to tighten the sealing ring 11 around the cable 900.

[0050] Optionally, the height of the inner liner ring 12 is 5mm~50mm, and the ring width is 2mm~7mm.

[0051] Optionally, the strength of the inner liner ring 12 is greater than that of the flexible sealing ring 11, and the inner liner ring 12 is a solid structure. Thus, the inner liner ring 12 can also act as an internal support for the sealing ring 11, which helps to ensure that the underwater cable sealing assembly 100 is not easily damaged during assembly and use.

[0052] Thus, when the underwater cable sealing assembly 100 is applied to the underwater vehicle and the underwater vehicle travels and the water depth increases, due to the increase of the water depth, the water temperature decreases, and thus the environmental temperature encountered by the underwater cable sealing assembly 100 gradually decreases until the preset underwater depth is reached, at which time the environmental temperature encountered by the underwater cable sealing assembly 100 decreases to the preset temperature. Thus, due to the decrease of the external environmental temperature to the preset temperature, the radial dimension of the inner liner ring 12, i.e. the diameter, decreases, and since the radial dimension of the inner liner ring 12 decreases more than the flexible sealing ring 11 at this time, the inner liner ring 12 will tighten the inner portion 111 of the sealing ring 11, so that the sealing ring 11 is more tightly held outside the cable 900, thereby facilitating the reduction of the disengagement probability between the cable 900 and the sealing ring 11, and ensuring the sealing reliability.

[0053] Optionally, the sealing ring 11 is integrally formed outside the inner liner ring 12. In other words, when manufacturing the underwater cable sealing assembly 100 of the present disclosure, the inner liner ring 12 can be first placed in a molding mold, and then molten liquid sealing material for forming the sealing ring 11 is poured into the molding mold. After the molding mold is formed and cooled, the liquid sealing material is cooled and solidified outside the inner liner ring 12 and formed into the sealing ring 11, thereby integrally forming the inner liner ring 12 outside the sealing ring 11. Thus, the sealing ring 11 and the inner liner ring 12 are firmly combined, and when the cable 900 is slightly moved due to changes in external water depth and water pressure, the probability of relative movement between the inner liner ring 12 and the sealing ring 11 due to the slight movement of the cable 900 is small, which is conducive to ensuring the sealing reliability and service life of the underwater cable sealing assembly 100.

[0054] Figure 5 is a cross-sectional view of the underwater cable sealing assembly 100 of another embodiment of the present disclosure along another cross-sectional line. Figure 6 is a cross-sectional view of the underwater cable sealing assembly 100 of another embodiment of the present disclosure along another cross-sectional line. Figure 7 is a schematic view of the underwater cable sealing assembly 100 of another embodiment of the present disclosure used for sealing an environment. Referring to Figures 5 to 7 , the cable 900 is provided for being arranged in an underwater pipe body, such as a penetration pipe body 800 for penetrating from outside a cabin to inside the cabin of an underwater vehicle. The underwater cable sealing assembly 100 further comprises a negative expansion ring 13. The negative expansion ring 13 is embedded in the sealing ring 11 and is sleeved outside the inner liner ring 12, and has a strength greater than that of the sealing ring 11 and is implemented as a temperature deformation material that can expand with a decrease in temperature below the preset temperature.

[0055] Thus, on one hand, when the underwater vehicle is sailing downward from the water surface to below the preset underwater depth, the negative expansion ring 13 will expand with the increase of water depth and the decrease of water temperature, thereby abutting against the inner liner ring 12, so that the inner liner ring 12 can apply greater tightening force to the inner layer part 111 of the sealing ring 11, which is conducive to tightening the inner layer part 111 of the sealing ring 11 by the inner liner ring 12. On the other hand, the expansion of the negative expansion ring 13 can also counteract the contraction of at least part of the outer layer part 112 of the sealing ring 11, and support the outer layer part 112 of the sealing ring 11, which is conducive to reducing the probability of the outer layer part 112 of the sealing ring 11 from being separated from the inner wall of the underwater pipe body.

[0056] Optionally, as shown in Figure 5 and Figure 6 , the negative expansion ring 13 is arranged in close contact with the inner liner ring 12, and it can be understood that the negative expansion ring 13 can also not be in close contact with the inner liner ring 12, which is also within the protection scope of the present disclosure, for example, the intermediate layer part of the sealing ring 11 can be filled between the negative expansion ring 13 and the inner liner ring 12.

[0057] Optionally, the negative expansion ring 13 can be an alloy material with a negative expansion coefficient. For example, the negative expansion ring 13 can be a titanium-niobium-zirconium-tin alloy with a negative expansion and containing multiple metal components such as titanium, niobium, zirconium and tin.

[0058] Referring to Figure 4 or Figure 7 , the present disclosure also provides a through-hull sealing device, which comprises a through-hull pipe body 800 and at least one underwater cable sealing assembly 100 as described in any of the above examples.

[0059] The through-hull pipe body 800 is provided with a lumen extending in the axial direction and for the cable 900 to pass through, and the lumen is divided into an in-hull section 81 and an out-hull section 82. In some examples, the through-hull pipe body 800 can be a cup-shaped pipe joint passing from the out-hull to the in-hull, and the cup-shaped pipe joint is provided with a protrusion 83 to divide the lumen into the in-hull section 81 and the out-hull section 82 on both sides of the protrusion 83.

[0060] At least one of the underwater cable sealing assemblies 100 seals and fills the in-hull section 81 or the out-hull section 82.

[0061] In some examples, there is one underwater cable sealing assembly 100, which is arranged in the in-hull section 81 or the out-hull section 82 and abuts against the protrusion 83. Thus, in the in-hull section 81 or the out-hull section 82, the underwater cable sealing assembly 100 plays a sealing role to prevent water outside the hull from penetrating into the hull.

[0062] In some examples, the underwater cable sealing assembly 100 is one, and is arranged in the cabin inner section 81 and the cabin outer section 82, and abuts against the convex part 83. Thus, the underwater cable sealing assembly 100 plays a sealing role in the cabin inner section 81 and the cabin outer section 82, and prevents water outside the cabin from penetrating into the cabin.

[0063] Optionally, the cabin-penetrating sealing device further comprises at least one sealing filler 84. The at least one sealing filler 84 is arranged in the cabin inner section 81 or the cabin outer section 82, and is located on a side of the underwater cable sealing assembly 100 away from the convex part 83.

[0064] As an example, the sealing filler 84 can be implemented as a sealing filler filled with sealant, such as a carbon fiber packing filled with sealant. Thus, when sealing the sealing filler 84, the carbon fiber packing is wound on the cable 900 and pressed into the lumen, then the sealant is injected, and the combination structure of the carbon fiber packing and the sealant is compacted, so as to realize the sealing of the sealing filler 84 in the cabin inner section 81 or the cabin outer section 82.

[0065] Optionally, the cabin-penetrating sealing device further comprises at least one pressing screw 85. The at least one pressing screw 85 is threadedly fastened in the cabin inner section 81 or the cabin outer section 82, and is used to press and seal the underwater cable sealing assembly 100 in the cabin inner section 81 or the cabin outer section 82.

[0066] Optionally, the cabin-penetrating sealing device further comprises at least one spacer 86. The at least one spacer 86 is arranged between the pressing screw 85 and the sealing filler 84, and is used to press the sealing filler 84 away from the sealing filler 84. As an example, the pressing screw 85 is implemented as a pressing nut, and the spacer 86 is implemented as a pressing washer. Thus, the pressing washer and the pressing nut are installed in sequence, and by rotating the pressing nut, the pressing washer applies appropriate pressing force to ensure initial sealing effect and realize sealing.

[0067] As an example, the compression screw 85 is at least two, such as a first compression screw 85a and a second compression screw 85b, and the at least two compression screws 85 are threadedly fastened to the inner section 81 and the outer section 82 for compressively sealing the underwater cable sealing assembly 100 and the sealing packing 84 to the inner section 81 and the outer section 82, respectively. The spacer 86 is at least two, such as a first spacer 86a and a second spacer 86b. At least one of the spacers 86 is disposed between the compression screw 85 and the sealing packing 84 of the inner section 81, and at least another of the spacers 86 is disposed between the compression screw 85 and the sealing packing 84 of the outer section 82.

[0068] The above-described embodiments are merely illustrative for the principles and effects of the present disclosure, and are not intended to limit the present disclosure. Any modification or change made by any person skilled in the art without departing from the spirit and scope of the present disclosure shall be covered by the protection scope of the present disclosure.

Claims

1. An underwater cable sealing assembly, characterized by The application relates to a cable sealing assembly for underwater cables, comprising: a flexible sealing ring tightly sleeved between an underwater cable and an underwater pipe body through which the cable passes; and an inner lining ring embedded in the sealing ring and made of a temperature deformation material which shrinks below a preset temperature and the shrinkage is greater than that of the sealing ring; the preset temperature corresponds to the temperature of a preset underwater depth, so that the inner lining ring shrinks below the preset underwater depth to tighten the sealing ring on the cable; wherein the inner lining ring is made of a copper-based memory alloy. The preset underwater depth is 300-1000 m underwater, and the preset temperature is 5-10 DEG C.

2. The underwater cable seal assembly of claim 1, wherein, The material of the sealing ring is the same as that of the outer skin of the cable.

3. The underwater cable seal assembly of claim 1, wherein, The application further relates to a cable sealing assembly for underwater cables, further comprising:

4. The underwater cable seal assembly of claim 1, wherein, a negative expansion ring embedded in the sealing ring and sleeved outside the inner lining ring, and the strength of the negative expansion ring is greater than that of the sealing ring and the negative expansion ring is made of a temperature deformation material which expands with the decrease of temperature below the preset temperature. The negative expansion ring is made of an alloy material with a negative expansion coefficient.

5. The underwater cable seal assembly of claim 4, wherein, The sealing ring is made of rubber / plastic material.

6. The underwater cable seal assembly of claim 1, wherein, The inner lining ring is integrally formed inside the sealing ring.

7. The underwater cable seal assembly of claim 1, wherein, The application relates to a cable sealing assembly for underwater cables, comprising:

8. A through-cabin seal apparatus, characterized by, a through-hull pipe body provided with a lumen extending in the axial direction and through which a cable passes, and the lumen comprises an in-hull section and an out-hull section; at least one underwater cable sealing assembly as claimed in any one of claims 1-7, wherein the underwater cable sealing assembly is filled in the in-hull section or the out-hull section. A convex part is arranged between the in-hull section and the out-hull section and abuts against the underwater cable sealing assembly; 9. The transit seal of claim 8, wherein, The through-hull sealing device further comprises at least one sealing filler arranged in the in-hull section or the out-hull section and located on the side of the underwater cable sealing assembly away from the convex part. The underwater cable sealing assembly and the sealing filler are both at least two; 10. The transit seal of claim 9, wherein, At least two underwater cable sealing assemblies and at least two sealing fillers are respectively filled in the in-hull section and the out-hull section. ​

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