JPH0436200Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is designed to protect linear structures such as communication cables, piping, and ropes installed underwater or on land from harmful organisms such as large fish and animals. This invention relates to a protection device for linear installations that protects them from damage caused by galling.

[Conventional technology]

Generally, with the expansion of data communication networks, communication cables such as optical fiber cables are laid under the sea to connect multiple data communication stations across the ocean, and high-speed, high-density data communication is achieved through these communication cables. is being carried out.

In addition to this type of communication cable, underwater linear installations such as other cables, ropes, and piping used for various purposes are laid under the sea.

[Problem that the invention attempts to solve]

However, there is a problem in that large fish, especially sharks, chew on these wire-like structures, damaging them and, in the case of communication cables, causing phenomena such as a decline in communication functionality or a failure to communicate. Similar problems caused by damage caused by large fish have occurred in the case of linear installations other than communication cables, and an effective solution is desired.

Therefore, the technical challenge of this invention is to protect linear installations such as cables, piping, and ropes from being damaged by large fish and the like.

[Means for solving problems]

This invention was made with the above points in mind, and includes a cylindrical insulating buffer layer, a cylindrical first electrode, a cylindrical first electrode, and a cylindrical A dielectric material, a cylindrical second electrode, and a cylindrical insulating buffer layer are sequentially and integrally arranged substantially concentrically, and a voltage is applied between the two electrodes to remove the two electrodes and the dielectric material. This is a protection device for linear installations that is equipped with a power source that charges a cylindrical capacitor.

[Effect]

Therefore, according to this invention, a cylindrical capacitor consisting of a first electrode, a dielectric material, and a second electrode arranged around the outer periphery of a linear installation is activated by applying a power supply voltage between both electrodes. It gets charged and stores an electric charge, and when a pest, for example, bites into it,
When the teeth of the living things break through the electrodes, the stored charge is discharged to the living things, and the wires are repelled by an electric shock before any damage is caused to the wires, thereby protecting the wires.

Here, the power supply does not need to constantly apply a voltage between the two electrodes, and it is only necessary to charge the cylindrical capacitor to the extent that a predetermined state of charge can be maintained, thereby making it possible to save power.

〔Example〕

Next, this invention will be explained in detail with reference to drawings showing one embodiment thereof.

In those drawings, 1 is a communication cable as an underwater linear installation, and includes a core wire 1a and a core wire 1a.
It consists of a plurality of transmission lines 1b arranged around a and a covering material 1c covering these.

2 is a cylindrical insulating first buffer layer disposed in close contact with the outer periphery of the cable 1; 3 is a conductive cylindrical first electrode disposed in close contact with the outer periphery of the buffer layer 2; 4
5 is a cylindrical dielectric body disposed in close contact with the outer periphery of the electrode 3; 5 is a cylindrical dielectric body disposed in close contact with the outer periphery of the dielectric body 4, and together with the first electrode 3 and the dielectric body 4 constitute a cylindrical capacitor; A conductive cylindrical second electrode 6 is a cylindrical insulating second buffer layer disposed in close contact with the outer periphery of the electrode 5, and the first buffer layer 2, the first electrode 3, Dielectric 4, second electrode 5 and second buffer layer 6
are provided concentrically and integrally around the outer periphery of the cable 1.

Reference numeral 7 denotes a power source that charges the cylindrical capacitor by applying a DC voltage or a DC pulse voltage between the electrodes 3 and 5, and the charging charge is stored in the dielectric 4, so that the electrodes 3 and 5 are charged.

Therefore, as shown in Figure 2, large fish F such as sharks bite onto the linear structure,
When the teeth break through the second electrode 5, the dielectric 4, and the first electrode 3, the charge on the dielectric 4 is discharged from both electrodes 3, 5 to the large fish F, and the cable 1 is damaged before it is damaged. The large fish F is electrocuted and repelled, and damage to the cable 1 is prevented.

Here, electrodes 3 and 5 due to gnawing by large fish F
The damage shown above is nothing more than a very small hole in the overall situation, and does not cause any serious problems.

Further, the cylindrical capacitor may be charged by the power source 7 when the voltage between the electrodes 3 and 5 decreases to a predetermined value or less due to the discharge as described above.

It goes without saying that the protection device of this invention can be applied not only to the above-mentioned underwater linear structures, but also to linear structures on land.

[Effect of idea]

As described above, according to the device for protecting linear installed objects of this invention, a cylindrical capacitor constituted by a first electrode, a dielectric material, and a second electrode is disposed around the outer periphery of the linear installed object. Because it is charged by the power supply voltage, it is possible to discharge the charged charge to living things by gnawing on harmful living things, and protect linear structures.In the case of communication cables, communication function deteriorates or communication becomes impossible. It is possible to solve various problems such as

In addition, the power source that applies voltage between the two electrodes does not need to be constantly energized, and the cylindrical capacitor can be kept in a charged state, resulting in power savings.
Since the cylindrical capacitor and the insulating buffer layer can be integrally arranged around the outer periphery of the linear installation, they can be handled as one cable without impairing ease of handling.

[Brief explanation of the drawing]

FIGS. 1 and 2 are cross-sectional views showing one embodiment of the device for protecting linear laid objects of this invention. 1... Communication cable, 2... First buffer layer, 3...
...first electrode, 4...dielectric, 5...second electrode, 6...second buffer layer, 7...power supply.

Claims (1)

[Scope of utility model registration request] A cylindrical insulating buffer layer, a cylindrical first electrode, a cylindrical insulating buffer layer, a cylindrical first electrode,
A cylindrical dielectric material, a cylindrical second electrode, and a cylindrical insulating buffer layer are sequentially arranged substantially concentrically and integrally,
A protection device for a linear installation comprising: a power supply that applies a voltage between the two electrodes to charge a cylindrical capacitor made of the two electrodes and the dielectric.