CN204423951U - Rubber filling conductor blocks water submarine cable - Google Patents

Abstract

A rubber-filled conductor water-blocking submarine cable, including a power cable and a communication cable, the power cable and the communication cable are coated with an insulating shielding layer, and is characterized in that: between the conductors of the power cable and the communication cable, the conductor and the insulating shielding The layers are filled with rubber. The utility model provides a rubber-filled conductor water-blocking submarine cable, which has the following beneficial effects: the conductor water-blocking method is filled with rubber, so that the gaps between the conductors are completely filled with rubber, and can be applied to larger water depths. submarine cable project. It can be realized by installing rubber extruding equipment on the usual stranding equipment, and the equipment investment is relatively small. Compared with the traditional water-blocking conductor, the utility model can meet higher water-blocking requirements. And can play the role of blocking water in seawater.

Description

Rubber filled conductor water blocking submarine cable

technical field

The utility model relates to the field of electric cables, in particular to a water-blocking submarine cable filled with rubber conductors.

Background technique

At present, in high-voltage power transmission lines or submarine cables, water blocking is often carried out in the form of longitudinal wrapping of water blocking tapes of each layer. However, the use of water blocking tape has certain limitations, such as the water pressure cannot be too high, and only in fresh water can it play a role in water blocking.

Chinese patent document CN104409153A discloses a high-filling high-resistance water cable, including a cable core and a protective sheath 8 wrapped outside the cable core. The cable core is a conductor wound together by several electrical units, and the electrical unit It includes the bare metal wire 6, the water blocking tape 3 and the ethylene-propylene rubber insulating layer 7 that are sequentially coated on the outside of the bare metal wire 6 from the inside to the outside. That is to say, in this structure, the water blocking tape 3 needs to be covered outside the bare metal wire first, and then the ethylene-propylene rubber insulating layer 7 is covered. With this structure, each bare metal wire needs to go through two layers of wrapping before being twisted. This solution is likely to cause the overall diameter of the cable to become thicker and the processing cost to increase.

Contents of the invention

The technical problem to be solved by the utility model is to provide a rubber-filled conductor water-blocking submarine cable, which can prevent seawater from entering the conductor when the submarine cable is damaged by external machinery, and minimize the loss.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a rubber-filled conductor water-blocking submarine cable, including a power cable and a communication cable, the power cable and the communication cable are coated with an insulating shielding layer, and the power cable Rubber is filled between the conductor and the conductor of the communication cable, and between the conductor and the insulation shielding layer.

In a preferred scheme, the power cables and the communication cables are arranged separately in groups, and each of the power cables and the communication cables is provided in multiple groups, and a metal shielding layer is provided outside the power cables.

In a preferred solution, a metal shielding layer is provided outside the communication cable.

In a preferred solution, an optical cable is also provided.

In a preferred solution, the optical cable is a steel wire armored reinforced optical fiber.

In a preferred solution, the entirety of the optical cable, the power cable and the communication cable is coated with an anti-moth shipworm layer.

In a preferred solution, the moth-proof shipworm layer is covered with a steel wire armor layer and a polypropylene rope outer layer.

In a preferred solution, a polypropylene rope outer layer is also provided between the moth-proof shipworm layer and the steel wire armor layer.

In a preferred solution, there are at least two outer layers of polypropylene rope outside the steel wire armor layer.

The utility model provides a rubber-filled conductor water-blocking submarine cable, which has the following beneficial effects:

1. The water resistance of conductors is filled with rubber, so that the gaps between conductors are completely filled with rubber, which can be applied to submarine cable projects with greater water depths.

2. It can be realized by installing rubber extrusion equipment on the usual stranding equipment, and the investment in equipment is relatively small.

3. Compared with the traditional water-blocking conductor, the utility model can meet higher water-blocking requirements. And can play the role of blocking water in seawater.

4. Optical cables, communication cables and power transmission use the same carrier, so that transmission lines can carry out communication operations while transmitting power, and monitor and transmit the operating status of submarine cables at any time; greatly reducing the cost of laying and installation.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is a schematic cross-sectional view of the utility model.

In the figure: conductor 1, insulation shielding layer 2, power cable 4, communication cable 5, moth-proof ship insect layer 6, polypropylene rope sheath layer 7, steel wire armor layer 8, optical cable 9.

Detailed ways

As shown in Figure 1, a rubber-filled conductor water-blocking submarine cable includes a power cable 4 and a communication cable 5, the power cable 4 and the communication cable 5 are covered with an insulating shielding layer 2, and the power cable 4 and the communication cable 5 Rubber is filled between the conductors 1 and between the conductors 1 and the insulating shielding layer 2 . In this example, the rubber is filled between the conductors and between the conductor 1 and the insulating shielding layer 2 by extrusion filling, and the rubber inside the insulating shielding layer 2 is integrated. In addition to increasing the insulation effect, this also reduces the processing cost, which can be realized only by adding rubber extrusion equipment to the usual stranding equipment, the equipment investment is relatively small, and the process steps are relatively simple. The conductor in this example refers to a single conductive unit, such as a single copper wire. After the conductive unit is twisted, the rubber is extruded. Under the action of extrusion, the rubber will penetrate between the copper wires and the copper wire. In the gap between the wire and the insulating shielding layer 2.

The insulation shielding layer 2 in this example includes conductor shielding, insulation, and insulation and shielding layers.

In the preferred scheme, the power cables 4 and the communication cables 5 are set separately in groups, as shown in Figure 1, the power cables 4 and the communication cables 5 are respectively provided with multiple groups, in this example there are three groups of power cables 4 and two groups of communication cables The cable 5 is provided with a metal shielding layer 3 outside the power cable 4, and the metal shielding layer 3 in this example is a copper tape metal shielding layer. The communication cable 5 in this example is formed by twisting pairs of 4 sets of insulated wires with rubber-filled conductors that block water.

In a preferred solution, a metal shielding layer 3 is provided outside the communication cable 5, and the metal shielding layer 3 is a copper tape metal shielding layer.

In a preferred solution, an optical cable 9 is also provided. In a preferred solution, the optical cable 9 is a steel wire armored reinforced optical fiber. In this example, a steel wire armored reinforced 12-core single-mode optical fiber is preferably used.

In a preferred solution, the entirety of the optical cable 9 , the power cable 4 and the communication cable 5 is coated with an anti-moth shipworm layer 6 . The anti-moth ship worm layer 6 in this example is the anti-moth ship worm layer of copper tape.

In a preferred solution, the moth-proof shipworm layer 6 is covered with a steel wire armor layer 8 and a polypropylene rope outer layer 7 .

In a preferred solution, a polypropylene rope outer layer 7 is also provided between the moth-proof shipworm layer 6 and the steel wire armor layer 8 . With this structure, the outer layer 7 of the polypropylene rope can effectively reduce the friction between the moth-proof shipworm layer 6 and the steel wire armor layer 8 when it is bent.

In a preferred solution, the outer layer 7 of the polypropylene rope outside the steel wire armor layer 8 is at least two layers. With this structure, the wear resistance of the utility model is further improved.

The water rent requirements for submarine cables are: after one end of the 5m long cable is tested under 5kg/cm ² water pressure for 24 hours, there is no obvious visible salt water at the other end of the insulated core. The measured water seepage of the product of the present utility model under this condition is only about 20cm.

Above-mentioned embodiment is only the preferred technical scheme of the present utility model, and should not be regarded as the restriction to the present utility model, and the protection scope of the present utility model should be the technical solution described in the claims, including the technology in the technical solution described in the claims. An equivalent alternative to the feature is the scope of protection. That is, equivalent replacement and improvement within this scope are also within the protection scope of the present utility model.

Claims (9)

1. A rubber-filled conductor water-blocking submarine cable, including a power cable (4) and a communication cable (5), the power cable (4) and the communication cable (5) are covered with an insulating shielding layer (2), and its characteristics Yes: Rubber is filled between the conductor (1) of the power cable (4) and the communication cable (5), and between the conductor (1) and the insulating shielding layer (2). 2. A rubber-filled conductor water-blocking submarine cable according to claim 1, characterized in that: the power cable (4) and the communication cable (5) are arranged separately in groups, and the power cable (4) and the communication cable (5) Each is provided with multiple groups, and a metal shielding layer (3) is provided outside the power cable (4). 3. A rubber-filled conductor water-blocking submarine cable according to claim 2, characterized in that: a metal shielding layer (3) is provided outside the communication cable (5). 4. A rubber-filled conductor water-blocking submarine cable according to claim 1, characterized in that: an optical cable (9) is also provided. 5. A rubber-filled conductor water-blocking submarine cable according to claim 4, characterized in that: the optical cable (9) is a reinforced steel wire armored optical fiber. 6. A rubber-filled conductor water-blocking submarine cable according to claim 4, characterized in that: the entirety of the optical cable (9), power cable (4) and communication cable (5) is coated with moth-proof shipworm layer (6). 7. A rubber-filled conductor water-blocking submarine cable according to claim 6, characterized in that: the moth-proof shipworm layer (6) is covered with a steel wire armor layer (8) and a polypropylene rope outer layer ( 7). 8. A rubber-filled conductor water-blocking submarine cable according to claim 7, characterized in that: a polypropylene rope sheath is also provided between the moth-proof shipworm layer (6) and the steel wire armor layer (8) (7). 9. A rubber-filled conductor water-blocking submarine cable according to claim 7, characterized in that: the outer coating layer (7) of the polypropylene rope outside the steel wire armor layer (8) is at least two layers.