CN215417584U

CN215417584U - Ultrahigh-voltage submarine cable of composite pipeline

Info

Publication number: CN215417584U
Application number: CN202122134613.2U
Authority: CN
Inventors: 赵远涛; 单潜瑜; 金宇鹏; 何行波
Original assignee: Ningbo Orient Wires & Cables Co ltd
Current assignee: Ningbo Orient Wires & Cables Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-01-04
Anticipated expiration: 2031-09-06

Abstract

The utility model discloses an ultrahigh-voltage submarine cable of a composite pipeline, which comprises an outer protection layer, an inner liner layer, an armor layer and an inner layer functional unit group, wherein the inner layer functional unit group comprises a conductor, an inner shielding layer, an insulating layer, an outer shielding layer, a metal shielding layer and an inner sheath which are concentrically arranged from inside to outside; the inlayer functional unit group has a plurality ofly, the periphery of inlayer functional unit group is provided with gas transmission pipeline, the inner liner will be a plurality of inlayer functional unit group and gas transmission pipeline carry out the cladding, gas transmission pipeline is used for carrying oil gas to cool down through oil gas inlayer functional unit group, the armor wraps up in outside the inner liner, the outer jacket wrap up in outside the armor. The utility model can not only carry out the transmission of oil gas energy, but also carry out the transmission of electric energy, and the current-carrying capacity of the conductor is greatly improved.

Description

Ultrahigh-voltage submarine cable of composite pipeline

Technical Field

The utility model relates to the technical field of cables, in particular to an ultrahigh-voltage submarine cable of a composite pipeline.

Background

At present, offshore wind power generation and hydroelectric power generation are mostly adopted in ocean energy engineering, and along with transportation of energy sources such as petroleum and natural gas, new energy source gases such as hydrogen and oxygen can be generated by electrolyzing seawater. At present, pipelines are mostly used for transporting oil and gas energy, and submarine cables are mostly used for transporting electric energy. The submarine cable is mainly used for transporting electric energy, the current-carrying capacity is not ideal, and the electric energy is more lost in the transportation process.

SUMMERY OF THE UTILITY MODEL

The ultrahigh-pressure submarine cable is simple in structure, can be used for conveying oil and gas energy and conveying electric energy, and can be used for cooling the conductor in the conveying process, so that the resistance of the conductor is greatly reduced, and the current-carrying capacity of the conductor is greatly improved.

In order to achieve the above object, the present invention provides the following technical solutions.

The ultrahigh-voltage submarine cable of the composite pipeline comprises an outer protection layer, an inner liner layer, an armor layer and an inner layer functional unit group, wherein the inner layer functional unit group comprises a conductor, an inner shielding layer, an insulating layer, an outer shielding layer, a metal shielding layer and an inner sheath which are concentrically arranged from inside to outside; the conductor is used for transmitting electric energy, and the inner shielding layer is used for shielding an induction magnetic field; the insulating layer is used for insulating the periphery of the conductor; the outer shielding layer is used for shielding an induction magnetic field; the metal shielding layer is used for shielding an induction magnetic field; the inner sheath is used for coating the periphery of the metal shielding layer; the inlayer functional unit group has a plurality ofly, the periphery of inlayer functional unit group is provided with gas transmission pipeline, the inner liner will be a plurality of inlayer functional unit group and gas transmission pipeline carry out the cladding, gas transmission pipeline is used for carrying oil gas to cool down through oil gas inlayer functional unit group, the armor parcel in outside the inner liner for add intensity, the outer jacket wrap up in outside the armor for the protection.

The utility model has the beneficial effects that: when the submarine cable is applied to an offshore power generation system, oil and gas energy is conveyed by arranging the gas transmission pipeline, electric energy is conveyed by arranging the conductor, the gas transmission pipeline is arranged on the periphery of the conductor, so that when the gas transmission pipeline conveys the oil and gas energy, the conductor is cooled by a low-temperature environment manufactured by the oil and gas energy, the resistance of the conductor is reduced, the current-carrying capacity of the conductor is greatly improved, an induction magnetic field is shielded by the inner shielding layer and the outer shielding layer, the induction magnetic field is prevented from leaking, the periphery of the conductor is subjected to insulation treatment by the insulating layer, the induction magnetic field is shielded by the metal shielding layer, the induction magnetic field is prevented from leaking, and the metal shielding layer can bear short-circuit current.

As an improvement of the present invention, the number of the inner layer functional unit groups is three, and the three inner layer functional unit groups are arranged at the center and distributed in an equilateral triangle.

As an improvement of the utility model, the gas transmission pipelines are provided with three groups, and each group of gas transmission pipelines is arranged between two adjacent inner-layer functional unit groups.

As an improvement of the utility model, each group of the gas transmission pipelines comprises a large-diameter pipeline and small-diameter pipelines arranged at two sides of the large-diameter pipeline.

As an improvement of the utility model, the inner side of the inner liner layer is also provided with a heat insulation filling layer.

As an improvement of the utility model, an inner water blocking layer is arranged between the conductor and the inner shielding layer.

As an improvement of the utility model, an outer water-resistant layer is arranged between the outer shielding layer and the metal shielding layer.

As a refinement of the utility model, the conductor is made of copper or aluminum.

Drawings

Fig. 1 is a schematic cross-sectional structure of the cable of the present invention.

In the figure, 1, a conductor; 2. a central water blocking tape; 3. an inner shield layer; 4. an insulating layer; 5. an outer shield layer; 6. an inner water blocking layer; 7. a metal shielding layer; 8. an outer water-resistant layer; 9. an inner sheath; 10. a gas pipeline; 11. a thermally insulating fill layer; 12. an inner liner layer; 13. an armor layer; 14. an outer jacket.

Detailed Description

The utility model is further explained with reference to the drawings.

Referring to fig. 1, the extra-high voltage submarine cable of the composite pipeline comprises an outer protective layer 14, an inner liner layer 12, an armor layer 13 and an inner functional unit group.

The inner layer functional unit group comprises a conductor 1, a central water-blocking tape 2, an inner shielding layer 3, an insulating layer 4, an outer shielding layer 5, an inner water-blocking layer 6, a metal shielding layer 7, an outer water-blocking layer 8 and an inner sheath 9 which are concentrically arranged from inside to outside.

The conductor 1 is used for transmitting electric energy, is made of conventional conductor 1 materials such as a copper conductor 1 or an aluminum conductor 1 or other common metals, and can reasonably select corresponding materials according to requirements; the central water-blocking tape 2 wraps the conductor 1 to block water for the conductor 1, and the inner shielding layer 3 wraps the conductor 1 and is used for shielding an induced magnetic field generated by the conductor 1; the insulating layer 4 is coated outside the inner shielding layer 3 and used for insulating the periphery of the conductor 1; the outer shielding layer 5 is coated outside the insulating layer 4 and is used for further shielding the induced magnetic field generated by the conductor 1; the inner shielding layer 3 and the outer shielding layer 5 are both made of semi-conductive materials. The inner water-blocking layer 6 is coated outside the outer shielding layer 5 and made of a semi-conductive material, so that an electric field is balanced, partial discharge is avoided, and a water-blocking effect is achieved, the metal shielding layer 7 is coated outside the inner water-blocking layer 6 and made of metal materials such as copper or lead, so that leakage of an induction magnetic field is prevented, and short-circuit current is borne. The outer water-blocking layer 8 is coated outside the metal shielding layer 7 and is made of a semi-conductive material, so that an electric field is balanced, partial discharge is avoided, and a water-blocking effect is achieved, and the inner sheath 9 is coated outside the outer water-blocking layer 8 and used for coating the periphery of the metal shielding layer 7; the insulating material is made of a low-temperature-resistant inner protective layer material, has insulating property and is used for protecting the metal shielding layer 7.

The inlayer functional unit group has a plurality ofly, the periphery of inlayer functional unit group is provided with gas transmission pipeline 10, in this embodiment, the inlayer functional unit group has threely, and three inlayer functional unit group sets up in center department and is equilateral triangle distribution. The gas transmission pipelines 10 are provided with three groups, and each group of gas transmission pipelines 10 is arranged between two adjacent inner-layer functional unit groups. Inner liner 12 will be a plurality of inlayer functional unit group and gas transmission pipeline 10 carry out the cladding, gas transmission pipeline 10 is used for carrying oil gas to lower the temperature through oil gas inlayer functional unit group, every group gas transmission pipeline 10 includes major diameter pipeline and sets up in the minor diameter pipeline of major diameter pipe both sides, through dividing gas transmission pipeline 10 into major diameter pipeline and minor diameter pipeline, thereby can pack the clearance between inner liner 12 and the inlayer functional unit group better, make the whole degree of roundness of cable better, and the air channel of gas transmission passageway is bigger moreover. And the inner side of the inner liner 12 is also provided with a heat insulation filling layer 11, the heat insulation filling layer 11 is wrapped outside the inner functional unit group and the gas transmission pipeline 10, and the heat insulation filling layer 11 is made of heat insulation materials, such as asbestos, aerogel felt and the like, so that the internal temperature is relatively stable.

Armor 13 wrap up in outside inner liner 12 for increase the bulk rigidity and whole tensile strength, outer jacket 14 wrap up in outside armor 13, adopt conventional submarine cable sheath structure and material, be used for the whole guard action.

When the submarine cable is applied to an offshore power generation system, oil and gas energy is conveyed by arranging the gas pipeline 10, electric energy is conveyed by arranging the conductor 1, the gas pipeline 10 is arranged on the periphery of the conductor 1, so that when the gas pipeline 10 conveys the oil and gas energy, the conductor 1 is cooled by a low-temperature environment manufactured by the oil and gas energy, the resistance of the conductor 1 is reduced, the current-carrying capacity of the conductor 1 is greatly improved, an induced magnetic field is shielded by the inner shielding layer 3 and the outer shielding layer 5 to prevent the leakage of the induced magnetic field, the periphery of the conductor 1 is subjected to insulation treatment by the insulating layer 4, the induced magnetic field is shielded by the metal shielding layer 7 to prevent the leakage of the induced magnetic field, the metal shielding layer 7 can bear short-circuit current, the integral rigidity and the integral tensile strength are increased by the armor layer 13, so that various mechanical properties can meet the requirements.

The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.

Claims

1. Compound pipeline's superhigh pressure submarine cable, including outer jacket, inner liner, armor, inlayer functional unit group, its characterized in that: the inner layer functional unit group comprises a conductor, an inner shielding layer, an insulating layer, an outer shielding layer, a metal shielding layer and an inner sheath which are concentrically arranged from inside to outside; the inlayer functional unit group has a plurality ofly, the periphery of inlayer functional unit group is provided with gas transmission pipeline, the inner liner will be a plurality of inlayer functional unit group and gas transmission pipeline carry out the cladding, gas transmission pipeline is used for carrying oil gas to cool down through oil gas inlayer functional unit group, the armor wraps up in outside the inner liner, the outer jacket wrap up in outside the armor.

2. Ultra high voltage submarine cable according to claim 1, characterized in that: the inner layer functional unit groups are three and arranged at the center and distributed in an equilateral triangle shape.

3. The ultra high voltage submarine cable according to claim 2, wherein: the gas transmission pipelines are provided with three groups, and each group of gas transmission pipelines is arranged between two adjacent inner-layer functional unit groups.

4. Ultra high voltage submarine cable according to claim 3, wherein: each group of gas transmission pipelines comprises a large-diameter pipeline and small-diameter pipelines arranged on two sides of the large-diameter conduit.

5. Ultra high voltage submarine cable according to claim 1, characterized in that: and the inner side of the inner liner layer is also provided with a heat insulation filling layer.

6. Ultra high voltage submarine cable according to claim 1, characterized in that: and an inner water blocking layer is arranged between the conductor and the inner shielding layer.

7. Ultra high voltage submarine cable according to claim 1, characterized in that: and an outer water-resistant layer is arranged between the outer shielding layer and the metal shielding layer.

8. Ultra high voltage submarine cable according to claim 1, characterized in that: the conductor is made of copper or aluminum.