A cable anti-torsion device

Abstract

The present invention discloses a cable anti-torsion device for connecting underwater cables to surface floats. By adding a protective layer to the cable's outer surface, the cable's torsional strength is increased, allowing the surface float's rotation to be released via a slip ring, preventing damage to the cable due to excessive twisting. Specifically, a protective layer of a set length is applied to the cable's outer layer, starting at the point where the cable connects to the connector. This ensures that the tensile strength of the cable segment covered by the protective layer is greater than the initial torque required to initiate the slip ring's rotation. This device can mitigate the effects of the surface float's long-term rotation on the cable, protecting the cable and ensuring proper system operation.

Description

Technical Field

[0001] The invention relates to a cable anti-torsion device, belonging to the technical field of cable anti-torsion protection. Background Art

[0002] In a surface floating system with a tethered cable, one end of the cable is connected to the underwater equipment and the other to a surface float. The float operates on the surface for extended periods of time. Due to uncontrollable wind and wave forces and direction, the float rotates under the influence of these forces. This rotation eventually accumulates on the cable where it connects to the float. Exceeding the permitted number of twists in the cable can cause irreparable damage. Therefore, measures should be implemented to relieve the twist caused by the float's rotation and implement torsion protection.

[0003] Currently, cable torsion release mainly relies on installing a slip ring at the connection between the cable and the float. However, the rotation of the slip ring requires a certain initial torque. The rotation of the float is more easily transmitted to the cable without being released by the slip ring, and the cable will still be damaged by torsion during use. Summary of the Invention

[0004] In view of this, the present invention provides a cable anti-torsion device, which releases the rotation of the floating body on the water surface through the slip ring without accumulating on the cable, thereby protecting the cable and enabling the system connected to the cable to operate normally.

[0005] The cable anti-torsion device includes: a connector and a slip ring, one end of the cable is connected to the floating body through the connector and the slip ring; wherein the slip ring is fixedly mounted on the floating body, the connector is fixedly mounted on the end of the cable, the slip ring rotor rotates with the floating body, and the stator end socket is connected to the connector;

[0006] In addition, it also includes: a protective layer arranged on the outside of the cable; and a protective layer of a set length is arranged on the outer layer of the cable starting from the connection position between the cable and the connector, so that the tensile strength of the cable segment provided with the protective layer is greater than the initial torque for starting the rotation of the slip ring.

[0007] As a preferred embodiment of the present invention, the protective layer is a metal mesh sleeve.

[0008] As a preferred embodiment of the present invention, the metal mesh sleeve is a steel wire mesh sleeve.

[0009] As a preferred embodiment of the present invention, one end of the metal mesh sleeve is pressed into the joint vulcanization section of the connector for fixation, and the other end is folded back and fixed and compressed by a clamp.

[0010] As a preferred embodiment of the present invention, the metal mesh sleeve is pressed into the vulcanization section of the connector joint and is vulcanized as a whole when the connector is vulcanized.

[0011] Beneficial effects:

[0012] The anti-torsion device is provided on the connection end of the cable and the float, which can release the rotation of the float on the water surface through the slip ring without accumulating on the cable, thereby protecting the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of cable anti-torsion work after the cable anti-torsion device is installed;

[0014] Figure 2 Schematic diagram of the structure of the cable anti-torsion device.

[0015] Among them: 1-surface float, 2-slip ring, 3-watertight connector, 4-cable, 5-underwater equipment, 7-connector vulcanization section, 8-clamp, 9-wire mesh sleeve. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0017] This embodiment provides a cable anti-torsion device, which is applied to the connection between an underwater cable and a surface float, so that the rotation of the surface float is released through a slip ring without accumulation on the cable, thereby protecting the cable.

[0018] The cable anti-torsion device comprises a watertight connector (3), a slip ring (2), a clamp (8) and a wire mesh sleeve (9).

[0019] like Figure 1 As shown, one end of the cable 4 is connected to the surface float (1) through a watertight connector (3) and a slip ring (2), and the other end is connected to the underwater equipment 5; wherein the slip ring (2) is fixedly mounted on the surface float (1), the watertight connector (3) is fixedly mounted on the end of the cable 4, the rotor of the slip ring (2) rotates together with the surface float (1), and the stator end socket is directly connected to the watertight connector (3) of the cable (4).

[0020] like Figure 2As shown, starting from the end of the watertight connector (3) at the connection end of the cable (4) and the water surface float (1), a steel mesh sleeve (9) with a length of L is added to the outer layer of the cable (4). It should be ensured that the steel mesh sleeve (9) has no burrs and can be tightened after stretching. In view of the fact that most of the torque accumulates in the 5m cable length interval of the cable 4 close to the water surface float 1, a steel mesh sleeve is added to the outer layer of the cable 2m-5m close to the water surface float, that is, starting from the watertight connector (3) at the connection end of the cable (4) and the water surface float (1), a steel mesh sleeve (9) with a length of 2m-5m is added to the outer layer of the cable (4). One end of the steel mesh sleeve (9) is pressed into the joint vulcanization section (7) of the watertight connector (3), and is vulcanized as a whole when the watertight connector (3) is vulcanized to ensure the consistency of the appearance; the other end of the steel mesh sleeve (9) is folded back a layer of edge and fixed and pressed with a clamp (8). By installing a wire mesh sleeve (9) in the torque accumulation area of the cable, the bending strength and torsional strength of the cable section are enhanced, so that the slip ring is easier to twist than the cable, that is, the rotation of the water surface float 1 is easier through the slip ring.

[0021] The cable torsion resistance works as follows:

[0022] according to Figure 1 The diagram shows how to install the cable anti-torsion device on the cable 4. Then, the surface float 1, slip ring 2, cable 4, and underwater equipment 5 are connected. After the surface float 1 is deployed, it floats on the water surface. The surface float 1 works continuously for a long time and is easily affected by wind and waves on the water surface, causing displacement and rotation. The rotation of the surface float 1 is transmitted to the cable 4 and slip ring 2. However, the rotation of the slip ring 2 has friction, and a certain initial torque is required to start the rotation of the slip ring. If the cable anti-torsion device is not installed, the cable 4 is more likely to be twisted. A steel mesh sleeve is added to the cable 2-5m near the surface float to enhance the bending and torsional strength of this section of the cable. As a result, the slip ring is easier to twist than the cable, and the rotation of the surface float 1 is released through the slip ring, preventing the cable from being damaged by twisting.

[0023] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cable anti-torsion device, comprising: A connector and a slip ring (2), one end of a cable (4) is connected to the floating body through the connector and the slip ring (2); The slip ring (2) is fixedly mounted on the floating body, the connector is fixedly mounted on the end of the cable (4), the rotor of the slip ring (2) rotates along with the floating body, and the stator end socket is connected to the connector; The invention is characterized in that it further comprises: a protective layer arranged on the outside of the cable (4); a protective layer of a set length is arranged on the outer layer of the cable (4) starting from the connection position between the cable (4) and the connector, so that the tensile strength of the cable section provided with the protective layer is greater than the initial torque for starting the rotation of the slip ring (2); The protective layer is a metal mesh sleeve; One end of the metal mesh sleeve is pressed into the connector vulcanized section (7) for fixation, and the other end is folded back and fixed and compressed by a clamp (8); The length of the protective layer is 2m-5m.

2. The cable anti-torsion device according to claim 1, characterized in that: The metal mesh sleeve is a steel wire mesh sleeve (9).

3. The cable anti-torsion device according to claim 1, characterized in that: The metal mesh sleeve is pressed into the vulcanized section of the connector joint and is vulcanized as a whole when the connector is vulcanized.

Images