A counterweight device for underwater dynamic cable

Abstract

The present invention discloses a counterweight device for underwater dynamic cables, comprising: two clamps clamped on the dynamic cables; multiple steel wires are fixedly connected between the two clamps, and multiple spherical counterweight blocks are fixed on each steel wire. The clamps of the present invention can fix the counterweight blocks to prevent the counterweight device and the submarine cable from sliding left and right; the layout of the distributed spherical counterweight blocks can prevent the underwater cable from floating up or deviating from the designated position, so that the submarine cable runs according to the pre-set line type, provides counterweight for the underwater dynamic cable, and ensures the stability of the submarine cable when it is not buried.

Description

Technical Field

[0001] The invention relates to the technical field of auxiliary accessories for marine equipment, and in particular to a counterweight device for underwater dynamic cables. Background Art

[0002] Dynamic submarine cables are affected by waves and ocean currents, which can cause large displacement, bending and twisting. In order to ensure the stability of the dynamic cables during installation and operation, they must run in the water according to a certain line shape. Therefore, counterweights are usually needed to prevent the underwater cables from floating up or deviating from the designated position. The commonly used lead counterweights are expensive, and the manufacturing process is prone to lead poisoning, which can easily pollute the environment.

[0003] During construction and deployment, especially in shallow water areas, due to the influence of ocean currents and waves, it is easy for the submarine cable to slip due to external forces, eventually causing damage to the submarine cable and affecting its service life; in deep water areas, due to the water pressure causing radial contraction of the submarine cable, the counterweight is easy to slip along the axial position of the submarine cable. Summary of the invention

[0004] In view of the problems in the prior art of being expensive, easy to cause pollution and easy to slip, the present invention provides a counterweight device for underwater dynamic cables.

[0005] The present invention discloses a counterweight device for underwater dynamic cables, comprising: two clamps clamped on the dynamic cables;

[0006] A plurality of steel wires are fixedly connected between the two clamps, and a plurality of spherical counterweight blocks are fixed on each of the steel wires.

[0007] As a further improvement of the present invention, the clamp is a two-half structure, and the two-half structures are screwed and fixed on the dynamic cable by bolts.

[0008] As a further improvement of the present invention, a gasket made of anti-corrosion material is provided between the clamp and the dynamic cable.

[0009] As a further improvement of the present invention, the plurality of steel wires are arranged parallel to the axis of the dynamic cable, and the plurality of spherical counterweights are equal in size and evenly distributed on the steel wires.

[0010] As a further improvement of the present invention, the clamp, steel wire and bolt are made of 316L stainless steel, and the spherical counterweight is a 316L stainless steel ball or an anti-corrosion ball.

[0011] As a further improvement of the present invention, the outer layer of each accessory is coated with an anti-corrosion layer.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The layout of the distributed spherical counterweight blocks of the present invention can prevent the underwater cable from floating up or deviating from the specified position, so that the submarine cable runs according to the preset linear shape; all counterweight devices are made of 316L stainless steel, and the outer layer is coated with an anti-corrosion layer, which can effectively provide counterweight and resist the corrosion of seawater; fastening the clamp with bolts and adding anti-corrosion gaskets can prevent the radial contraction of the submarine cable due to water pressure in deep water areas, and the counterweight blocks from sliding along the submarine cable, and can also protect the dynamic cable; the size and number of the spherical counterweight blocks can be changed at any time according to the conditions of the sea area, which is more convenient to use different counterweights according to different sections. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of a counterweight device for an underwater dynamic cable disclosed in an embodiment of the present invention;

[0015] Figure 2 The present invention is a front view of a counterweight device for an underwater dynamic cable disclosed in an embodiment of the present invention.

[0016] In the figure:

[0017] 1. Clamp; 2. Steel wire; 3. Spherical counterweight; 4. Bolt; 5. Dynamic cable. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0020] like Figure 1 , 2 As shown, the present invention provides a counterweight device for underwater dynamic cables, comprising: two clamps 1, a steel wire 2, a spherical counterweight block 3 and a bolt 4; wherein,

[0021] The two clamps 1 of the present invention are clamped on the dynamic cable 5 at a preset distance. The clamp 1 is a two-half structure, and the two-half structures are tightened and fixed on the dynamic cable 5 by bolts 4; further, a gasket made of anti-corrosion material is provided between the clamp 1 and the dynamic cable 5 to protect the dynamic cable 5.

[0022] In the present invention, a plurality of steel wires 2 are fixedly connected between the two clamps 1, and preferably the steel wires 2 are welded and fixed on the clamps 1 and the plurality of steel wires 2 are arranged parallel to the axis of the dynamic cable 5; in the present invention, a plurality of spherical counterweights 3 are fixed on each steel wire 2, and preferably the plurality of spherical counterweights 3 are equal in size and evenly distributed on the steel wire 2.

[0023] Furthermore, each accessory of the counterweight device is made of 316L stainless steel. At the same time, the spherical counterweight block can also be made of other anti-corrosion materials; the outer layer of each accessory is coated with an anti-corrosion layer to improve its corrosion resistance.

[0024] Furthermore, the length of the steel wires between the clamps, the number of steel wires, and the diameter and number of the weighted balls can be selected according to the water depth in the running state of the dynamic cable and the diameter of the dynamic cable.

[0025] The specific assembly method of the present invention is:

[0026] Step 1: buckle the clamp 1 onto the dynamic cable 5 and tighten it with bolts 4 to provide friction between the clamp 1 and the dynamic cable 5;

[0027] Step 2: Determine the distance between every two counterweight devices according to ocean currents and waves, weld four steel wires 2 or six steel wires to the clamp, and determine the number of spherical counterweights 3 on each steel wire.

[0028] The advantages of the present invention are:

[0029] The clamp of the present invention can fix the counterweight block to prevent the counterweight device and the submarine cable from sliding left and right; the layout of the distributed spherical counterweight blocks can prevent the underwater cable from floating up or deviating from the specified position, so that the submarine cable can run according to the preset linear shape, provide counterweight for the underwater dynamic cable, and ensure the stability of the submarine cable without burying; all counterweight devices are made of 316L stainless steel, and the outer layer is coated with an anti-corrosion layer, which can effectively provide counterweight and resist seawater corrosion; fastening the clamp with bolts and adding anti-corrosion gaskets can prevent the radial contraction of the submarine cable due to water pressure in deep water areas, and the counterweight block can also protect the dynamic cable; the size and number of the spherical counterweight blocks can be changed at any time according to the sea conditions, which is more convenient to use different counterweights according to different sections.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A counterweight device for underwater dynamic cables, characterized in that: The counterweight device is used to provide a counterweight for the underwater dynamic cable, so that the underwater dynamic cable can run according to a preset line without being buried, thereby preventing the underwater dynamic cable from floating up or deviating from a designated position; the counterweight device includes: two clamps clamped on the dynamic cable; The clamp is a two-piece structure, and the two-piece structure is fastened to the dynamic cable by bolts; A plurality of steel wires are fixedly connected between the two clamps, a plurality of spherical counterweights are fixed on each of the steel wires, the plurality of steel wires are arranged parallel to the axis of the dynamic cable, and the plurality of spherical counterweights are equal in size and evenly distributed on the steel wires; The outer layer of each accessory is coated with an anti-corrosion layer.

2. The underwater dynamic cable counterweight device according to claim 1, characterized in that: A gasket made of anti-corrosion material is provided between the clamp and the dynamic cable.

3. The underwater dynamic cable counterweight device according to claim 1, characterized in that: The clamp, steel wire and bolt are made of 316L stainless steel, and the spherical counterweight is a 316L stainless steel ball or an anti-corrosion ball.

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