Dynamic cable buoyancy device

Abstract

The application provides a buoyancy device for dynamic cable, comprising: a buoyancy cylinder having a cable passing hole for the dynamic submarine cable to pass through, the buoyancy cylinder is split in the diametric direction and comprises two buoyancy cylinder bodies, the two buoyancy cylinder bodies are detachably fixed together, and the cable passing hole is located between the two buoyancy cylinder bodies; and a plurality of elastic pressing components, each of which is arranged on the two buoyancy cylinder bodies, the elastic pressing component comprises a pressing rod and an elastic piece, the pressing rod is movably arranged along the radial direction of the buoyancy cylinder body, and the elastic piece is connected to the pressing rod and the buoyancy cylinder body to apply an elastic force to the pressing rod to move in the direction of the cable passing hole. The buoyancy device for dynamic cable provided by the application can always apply elasticity to the dynamic submarine cable when the dynamic submarine cable is reduced in diameter, avoids the problem that the buoyancy cylinder slips relative to the dynamic submarine cable when the dynamic submarine cable is reduced in diameter, ensures the line type of the dynamic submarine cable, and helps to improve the safety of the dynamic submarine cable.

Description

Technical Field

[0001] This utility model generally relates to the field of submarine cable laying technology, and specifically to a dynamic cable buoyancy device. Background Technology

[0002] In order to construct and maintain the alignment of the dynamic submarine cable in seawater, multiple buoyancy cylinders are usually installed at intervals along the axial direction of the dynamic submarine cable, with an interference fit between the buoyancy cylinders and the submarine cable.

[0003] However, under the pressure of deep water, the dynamic submarine cable will shrink in diameter, creating a gap between the buoyancy cylinder and the submarine cable. This can cause the buoyancy cylinder to slip relative to the dynamic submarine cable, which in turn changes the cable's shape and affects its safety. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a dynamic cable buoyancy device.

[0005] This application provides a dynamic cable buoyancy device, comprising: The buoyancy tube has a cable passage hole for a dynamic submarine cable to pass through. The buoyancy tube has a split structure along the diameter direction and includes two buoyancy tube bodies. The two buoyancy tube bodies are detachably fixed together, and the cable passage hole is located in the two buoyancy tube bodies. Multiple elastic anti-pressure components are respectively disposed in two buoyancy cylinders. Each elastic anti-pressure component includes an anti-pressure rod and an elastic element. The anti-pressure rod is movably disposed along the radial direction of the buoyancy cylinder, and the elastic element is connected to the anti-pressure rod and the buoyancy cylinder to apply an elastic force to the anti-pressure rod to move in the direction of the cable hole.

[0006] Furthermore, each buoyancy cylinder is provided with multiple elastic pressure-blocking components, and the multiple elastic pressure-blocking components are spaced apart along the axial direction of the buoyancy cylinder.

[0007] Furthermore, the elastic force applied by the elastic element to the pressure bar is adjustable.

[0008] Furthermore, the buoyancy cylinder is provided with a radially penetrating stepped hole, which includes a first hole section and a second hole section. The diameter of the first hole section is larger than that of the second hole section. The end of the first hole section away from the second hole section extends to the wall of the cable passage hole. A pressure rod is located in the first hole section. A stop ring is sleeved on the outer periphery of the pressure rod and the stop ring slides in fit with the first hole section. A driving member is provided in the first hole section and the driving member is located on the side of the pressure rod closer to the second hole section. An elastic member is located between the stop ring and the driving member and is sleeved on the outer periphery of the pressure rod. The driving member is movably arranged along the axial direction of the first hole section.

[0009] Furthermore, the driving component includes a driving disc and a driving rod, with the driving rod located on the side of the driving disc away from the stop ring, and the driving rod being screwed into the second hole section.

[0010] Furthermore, the buoyancy cylinder includes a shell, which encloses a filling cavity filled with buoyancy material. The shell contains a plurality of hollow connecting columns, which penetrate the shell radially. The inner cavity of the connecting columns forms a stepped hole for receiving.

[0011] Furthermore, the outer end of the connecting post is filled with a sealing plug.

[0012] Furthermore, the end of the pressure bar is provided with an elastic pad.

[0013] The buoyancy device for dynamic cables provided in this application has multiple elastic pressure components on the inner side of the buoyancy cylinder. When the dynamic submarine cable is narrowed, the elastic pressure components can always apply elasticity to the dynamic submarine cable, thereby fixing the buoyancy cylinder to the outer periphery of the dynamic submarine cable. This avoids the problem of the buoyancy cylinder slipping relative to the dynamic submarine cable when the cable is narrowed, ensuring the alignment of the dynamic submarine cable and helping to improve the safety of the dynamic submarine cable. Attached Figure Description

[0014] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of the dynamic cable buoyancy device provided in the embodiments of this application; Figure 2 A half-sectional view of the dynamic cable buoyancy device provided in the embodiments of this application; Figure 3 for Figure 2 Enlarged view of part A in the image. Detailed Implementation

[0015] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0016] Please refer to the attached document. Figure 1-3 This application provides a buoyancy device for a dynamic cable, including a buoyancy cylinder 100 and a plurality of elastic pressure-resistant components. The buoyancy cylinder 100 has a cable passage hole 101 through which the dynamic submarine cable passes. The plurality of elastic pressure-resistant components are disposed in the buoyancy cylinder 100 to apply elastic pressure to the dynamic submarine cable located in the cable passage hole 101, so as to ensure that the buoyancy cylinder 100 is fixedly sleeved on the dynamic submarine cable.

[0017] Specifically, the buoyancy cylinder 100 has a split structure along its diameter and includes two buoyancy cylinder bodies 110, which are detachably and fixedly connected together. A cable passage 101 is located in both buoyancy cylinder bodies 110, with a portion of the cable passage 101 located in one buoyancy cylinder body 110 and another portion in the other. Multiple elastic pressure-bearing components are respectively disposed in the two buoyancy cylinder bodies 110. Each elastic pressure-bearing component includes a pressure rod and an elastic element 220. The pressure rod is movably disposed radially along the buoyancy cylinder body 110, and the elastic element 220 is connected to the pressure rod and the buoyancy cylinder body 110 to apply a spring force to the pressure rod, causing it to move towards the cable passage 101.

[0018] The installation process of the buoyancy device on the submarine cable is as follows: two buoyancy cylinders 110 are fitted together on the outer periphery of the submarine cable and the two buoyancy cylinders 110 are fixedly connected. At this time, the pressure rod is elastically pressed against the dynamic submarine cable under the drive of the elastic element 220, so that the buoyancy cylinder 100 is fixed on the outer periphery of the dynamic submarine cable.

[0019] When the dynamic submarine cable narrows under water pressure, the pressure bar remains in contact with the dynamic submarine cable under the drive of the elastic element 220, so that the buoyancy cylinder 100 remains fixed to the outer periphery of the dynamic submarine cable. This prevents the buoyancy cylinder 100 from slipping relative to the dynamic submarine cable when the cable narrows, ensuring the cable's alignment and improving its safety.

[0020] Optionally, both buoyancy cylinders 110 are semi-cylindrical, and the two buoyancy cylinders 110 are symmetrically arranged. The two buoyancy cylinders 110 can be fixedly connected by multiple bolt assemblies to facilitate the assembly and disassembly of the buoyancy cylinders 100. Specifically, the buoyancy cylinder 100 has multiple pairs of connecting holes, each pair of connecting holes located in one of the two buoyancy cylinders 110. The bolts of the bolt assembly pass through the paired connecting holes and are screwed with nuts to fix the two buoyancy cylinders 110 together.

[0021] Optionally, each buoyancy cylinder 110 is provided with multiple elastic pressure-resistant components, and the multiple elastic pressure-resistant components are spaced apart along the axial direction of the buoyancy cylinder 110 to increase the fixing strength between the buoyancy cylinder 100 and the dynamic submarine cable.

[0022] Optionally, the end of the pressure bar is provided with an elastic pad, which can increase the friction between the pressure bar and the outer surface of the dynamic submarine cable. The elastic pad can be, but is not limited to, a rubber pad, etc.

[0023] In some embodiments of this application, the elastic force applied by the elastic member 220 to the pressure bar is adjustable, so that the pressure applied by the elastic pressure assembly to the dynamic submarine cable can be adjusted to meet the needs of applying different pressures to the dynamic submarine cable and to be applicable to dynamic submarine cables of different diameters.

[0024] Optionally, the buoyancy cylinder 110 is provided with radially penetrating accommodating stepped holes, and there are multiple accommodating stepped holes, with multiple elastic pressing components installed one-to-one in the multiple accommodating stepped holes. The accommodating stepped hole includes a first hole section 113 and a second hole section 114. The diameter of the first hole section 113 is larger than the diameter of the second hole section 114. The end of the first hole section 113 away from the second hole section 114 extends to the wall of the cable passage hole 101. The pressing rod is located in the first hole section 113. A stop ring 211 is sleeved on the outer periphery of the pressing rod and the stop ring 211 slides with the first hole section 113. The first hole section 113 is provided with a driving member, and the driving member is located on the side of the pressing rod closer to the second hole section 114. The elastic member 220 is located between the stop ring 211 and the driving member and is sleeved on the outer periphery of the pressing rod. The elastic member 220 is in a compressed state. The drive member is movably disposed along the axial direction of the first hole section 113 to adjust the elastic force applied by the elastic member 220 to the pressure bar, thereby adjusting the fixing force between the buoyancy cylinder 100 and the dynamic submarine cable.

[0025] Optionally, the elastic element 220 is a spring.

[0026] Optionally, the driving component includes a driving disc 231 and a driving rod 232. The driving rod 232 is located on the side of the driving disc 231 away from the stop ring 211, and is screwed into the second hole section 114. The elastic force applied by the elastic element 220 to the pressing rod can be adjusted by rotating the driving rod 232, making the elastic force adjustment operation simple and convenient, and the elastic force adjustment structure simple. A screwdriver slot can be provided on the end face of the driving rod 232 away from the driving disc 231 to facilitate the operator adjusting the position of the driving component using a screwdriver.

[0027] The first section 113 has a countersunk groove at the end furthest from the second section 114. A stop plate is screwed into the countersunk groove, and the stop plate has a hole structure for the pressure bar to pass through. The stop plate can prevent the pressure bar and the elastic element 220 from disengaging from the first section 113 when the buoyancy cylinder 100 is not installed on the dynamic submarine cable.

[0028] In some embodiments of this application, the buoyancy cylinder 110 includes a shell 111, which forms a filling cavity. The filling cavity is filled with buoyancy material 130, which may be, but is not limited to, polyethylene foam, to give the buoyancy cylinder 100 good buoyancy. The shell 111 has a plurality of hollow connecting posts 112 inside, which are arranged radially through the shell 111. The inner cavity of the connecting post 112 forms a stepped hole for receiving.

[0029] Optionally, the shell 111 is an integral injection molded part.

[0030] Optionally, the outer end of the connecting column 112 is provided with a countersunk groove and the countersunk groove is filled with a sealing plug 120. The sealing plug 120 can seal the accommodating step hole to prevent marine organisms or debris from clogging the accommodating step hole.

[0031] It should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., used above to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0032] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A dynamic cable buoyancy device, characterized in that, include: A buoyancy cylinder having a cable passage hole for the dynamic cable to pass through, the buoyancy cylinder having a split structure along the diameter direction and comprising two buoyancy cylinder bodies, the two buoyancy cylinder bodies being detachably fixed together, and the cable passage hole being located in the two buoyancy cylinder bodies; Multiple elastic pressure-blocking components are respectively disposed on the two buoyancy cylinders. Each elastic pressure-blocking component includes a pressure-blocking rod and an elastic element. The pressure-blocking rod is movably disposed along the radial direction of the buoyancy cylinder. The elastic element is connected to the pressure-blocking rod and the buoyancy cylinder to apply an elastic force to the pressure-blocking rod to move towards the cable passage hole.

2. The buoyancy device for dynamic cables according to claim 1, characterized in that, Each of the buoyancy cylinders is provided with a plurality of elastic pressure-blocking components, and the plurality of elastic pressure-blocking components are spaced apart along the axial direction of the buoyancy cylinder.

3. The buoyancy device for dynamic cables according to claim 1, characterized in that, The elastic force applied by the elastic element to the pressing rod is adjustable.

4. The buoyancy device for dynamic cables according to claim 3, characterized in that, The buoyancy cylinder is provided with a radially penetrating stepped hole, which includes a first section and a second section. The diameter of the first section is larger than that of the second section. The end of the first section away from the second section extends to the wall of the cable passage hole. The pressure rod is located in the first section. A stop ring is sleeved on the outer periphery of the pressure rod and the stop ring is slidably engaged with the first section. The first section is provided with a driving member, which is located on the side of the pressure rod closer to the second section. The elastic member is located between the stop ring and the driving member and is sleeved on the outer periphery of the pressure rod. The driving member is movably arranged along the axial direction of the first section.

5. The buoyancy device for dynamic cables according to claim 4, characterized in that, The driving component includes a driving disk and a driving rod. The driving rod is located on the side of the driving disk away from the stop ring, and the driving rod is screwed into the second hole section.

6. The buoyancy device for dynamic cables according to claim 4, characterized in that, The buoyancy cylinder includes a shell, which surrounds a filling cavity filled with buoyancy material. The shell contains a plurality of hollow connecting columns that penetrate the shell radially. The inner cavity of each connecting column forms the receiving stepped hole.

7. The buoyancy device for dynamic cables according to claim 6, characterized in that, The outer end of the connecting post is filled with a sealing plug.

8. The dynamic cable buoyancy device according to any one of claims 1-7, characterized in that, The end of the pressure bar is provided with an elastic pad.

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