Reinforced aluminum alloy pipe supporting expanded diameter conductor

Abstract

The utility model provides a reinforced aluminum alloy pipe supporting expanded diameter conductor, which comprises a supporting pipe, a reinforcing member, a Z-shaped single wire stranded conductor layer and a trapezoidal single wire stranded conductor layer, a spiral groove is arranged in the axial direction of the supporting pipe, the reinforcing member is arranged in the spiral groove, the Z-shaped single wire stranded conductor layer is arranged outside the supporting pipe, and the trapezoidal single wire stranded conductor layer is arranged outside the supporting pipe. And a trapezoidal single-wire stranded conductor layer is arranged outside the Z-shaped single-wire stranded conductor layer. The reinforced aluminum alloy pipe supporting expanded-diameter conductor is simple in structure and easy to produce, the supporting pipe is made of 6061 aluminum alloy pipe materials, the strength of the supporting pipe is improved, and enough supporting force is guaranteed; the FRP wire rod is made of a high-strength non-magnetic material, so that the safe operation tension of the wire is ensured, and eddy-current loss is avoided in an alternating-current transmission process; and the conductor layer adopts the combination of the high-strength heat-resistant aluminum alloy Z-shaped single wires and the soft aluminum trapezoidal single wires, so that the wire structure is round, compact and smooth, and has better conductivity.

Description

Technical Field

[0001] The utility model belongs to the technical field of power transmission line conductors, and in particular relates to a reinforced aluminum alloy tube-supported expanded-diameter conductor. Background Art

[0002] In the large-capacity lines of 500kV and above substations in the power system, 1440 / 120 ordinary steel-core heat-resistant aluminum alloy conductors are used as station introduction transmission conductors; as the voltage level of overhead transmission lines becomes higher and higher, the requirements for the connection of various voltage distribution devices in substations, as well as the connection of electrical equipment such as transformers and corresponding distribution devices, that is, the busbars that collect, distribute and transmit electric energy, are becoming higher and higher. Especially in substations located at high altitudes, the electric field, magnetic field, audible noise, and radio interference levels of the busbars used will greatly exceed the relevant requirements, which will not only cause environmental pollution, but also generate a large amount of power loss. The best technical means to solve these problems is to increase the conductor Diameter, some stations use expanded diameter conductors supported by aluminum tubes instead of conventional heat-resistant aluminum alloy conductors. The expanded diameter conductors supported by aluminum tubes effectively overcome the corona phenomenon generated by ordinary conductors during operation and greatly improve the use efficiency of the conductors. However, there is no reinforcing material in the expanded diameter conductors supported by aluminum tubes, the wire is soft and easily bent and deformed during transportation and installation, which brings great difficulty to the process control of the construction process; the overall tensile strength of the expanded diameter conductors without reinforcements is not high, which brings safety hazards to the overhead laying in the station. Therefore, traditional steel-core heat-resistant aluminum alloy conductors and expanded diameter conductors supported by aluminum tubes cannot meet the overhead laying needs in the station well, and a new type of overhead conductor needs to be developed to solve the overhead laying problem in the station. Summary of the invention

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a reinforced aluminum alloy tube-supported expanded diameter conductor, which achieves an expanded diameter effect, has a stable structure, a large current carrying capacity, high strength, good safety, and a high level of anti-corona and radio interference.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the utility model is:

[0005] A reinforced aluminum alloy tube supporting expanded diameter conductor, comprising a supporting tube, a reinforcing member, a Z-shaped single-wire twisted conductor layer, and a trapezoidal single-wire twisted conductor layer. A spiral groove is arranged in the axial direction of the supporting tube, a reinforcing member is arranged in the spiral groove, a Z-shaped single-wire twisted conductor layer is arranged outside the supporting tube, and a trapezoidal single-wire twisted conductor layer is arranged outside the Z-shaped single-wire twisted conductor layer.

[0006] Preferably, the reinforced aluminum alloy tube supports the expanded diameter conductor, wherein the wall thickness of the support tube is 2.5 to 3.5 mm, the outer diameter of the support tube is 25 mm to 80 mm, the spiral groove includes 3-6 grooves, the spiral pitch of the spiral groove is 600 to 100 mm, and the depth of the spiral groove is 2.5 to 6.0 mm.

[0007] Preferably, the reinforced aluminum alloy tube supports the expanded diameter conductor, wherein the reinforcing member is composed of a plurality of FRP wires spirally embedded in a spiral groove, the diameter of the FRP wire is 2.0 to 6.0 mm, and the diameter of the FRP wire is smaller than the depth of the spiral groove.

[0008] Preferably, in the reinforced aluminum alloy tube supporting the expanded diameter conductor, the Z-shaped single-wire twisted conductor layer is formed by twisting a plurality of Z-shaped single wires, and adjacent Z-shaped single wires cooperate with each other in structure.

[0009] Preferably, the reinforced aluminum alloy tube supports the expanded-diameter conductor, wherein the trapezoidal single-wire stranded conductor layer is formed by stranding a plurality of trapezoidal single wires.

[0010] Preferably, in the reinforced aluminum alloy tube supporting the expanded-diameter conductor, the rotation direction of the spiral groove is opposite to the Z-shaped single-wire twisting direction in the Z-shaped single-wire twisted conductor layer.

[0011] Preferably, the reinforced aluminum alloy tube supports the expanded diameter conductor, wherein the reinforced aluminum alloy tube supports the expanded diameter conductor is a hollow conductor with ventilation holes provided at both ends.

[0012] The beneficial effects brought by the technical solution provided by the embodiment of the utility model are:

[0013] The reinforced aluminum alloy tube supported expanded diameter conductor of the utility model has a simple structure and is easy to produce. The support tube adopts 6061 aluminum alloy tube material, which improves the strength of the support tube and ensures sufficient supporting force; the FRP wire is a high-strength non-magnetic material, which ensures the safe operation tension of the conductor and no eddy current loss will occur during the AC transmission process; the conductor layer adopts a combination of high-strength heat-resistant aluminum alloy Z-shaped single wire and soft aluminum trapezoidal single wire to ensure that the conductor structure is round, tight and smooth, and has good conductivity; the reinforced aluminum alloy tube supported expanded diameter conductor is used as the station introduction transmission conductor, and has the advantages of stable structure, large current carrying capacity, high strength, good safety, and high level of resistance to corona and radio interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the end surface structure of the reinforced aluminum alloy tube supporting the expanded diameter conductor.

[0015] Figure 2It is a cross-sectional view of the reinforced aluminum alloy tube supporting the expanded diameter conductor of the utility model. DETAILED DESCRIPTION

[0016] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "inside, outside", "up, down", "front, back", etc. are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0018] like Figure 1-2 A reinforced aluminum alloy tube supporting expanded diameter conductor comprises a supporting tube 1, a reinforcing member 2, a Z-shaped single-wire twisted conductor layer 3, and a trapezoidal single-wire twisted conductor layer 4. A spiral groove 1-1 is arranged in the axial direction of the supporting tube 1, the reinforcing member 2 is arranged in the spiral groove 1-1, the Z-shaped single-wire twisted conductor layer 3 is arranged outside the supporting tube 1, and the trapezoidal single-wire twisted conductor layer 4 is arranged outside the Z-shaped single-wire twisted conductor layer 3.

[0019] The wall thickness of the support tube 1 is 2.5 to 3.5 mm, the outer diameter of the support tube 1 is 25 mm to 80 mm, the spiral groove 1-1 includes 3 to 6 grooves, the spiral pitch of the spiral groove 1-1 is 600 to 100 mm, and the depth of the spiral groove 1-1 is 2.5 to 6.0 mm; the reinforcing member 2 is composed of a plurality of FRP wires 2-1 spirally embedded in the spiral groove 1-1, the diameter of the FRP wire 2-1 is 2.0 to 6.0 mm, and the diameter of the FRP wire 2-1 is smaller than the depth of the spiral groove 1-1; the Z-shaped single-wire stranded conductor layer 3 is formed by twisting a plurality of Z-shaped single wires 3-1, and the adjacent Z-shaped single wires 3-1 are structurally matched with each other; the trapezoidal single-wire stranded conductor layer 4 is formed by twisting a plurality of trapezoidal single wires 4-1; the rotation direction of the spiral groove 1-1 is consistent with the Z-shaped single-wire stranded conductor layer 3. The single wire 3-1 is twisted in opposite directions; the reinforced aluminum alloy tube supports the expanded diameter conductor, which is a hollow conductor with ventilation holes at both ends.

[0020] The support tube 1 is made of 6061 aluminum alloy, and the reinforcement member 2 is FRP wire 2-1, which serves as a load-bearing reinforcement member for the conductor. The tensile strength of the FRP wire 2-1 is ≥1700MPa, which ensures the safe operation tension of the conductor. The Z-shaped single-wire stranded conductor layer 3 adopts a number of high-strength heat-resistant aluminum alloy Z-shaped single wires 3-1 with a conductivity of 55% IACS. The Z-shaped single wire 3-1 stranding has an interlocking function to ensure that the busbar structure is round and tight. The trapezoidal single-wire stranded conductor layer 4 adopts a number of annealed soft aluminum trapezoidal single wires 4-1 with a conductivity of 63% IACS. The softness of soft aluminum makes the outer conductor layer twisted more tightly and the busbar surface smoother. The smooth surface can reduce the level of corona and radio interference. The 63% IACS conductivity makes the conductor have better conductivity. The reinforced aluminum alloy tube supports ventilation holes at both ends of the expanded diameter conductor, and the inner diameter air duct can naturally form hot air convection, which has a better heat dissipation effect.

[0021] The utility model has a simple product structure and is easy to produce. The support tube is made of 6061 aluminum alloy tube material, which improves the strength of the support tube and ensures sufficient supporting force. The FRP wire is a high-strength non-magnetic material to ensure the safe operation tension of the conductor, and no eddy current loss will occur during AC transmission. The conductor layer adopts a combination of high-strength heat-resistant aluminum alloy Z-shaped single wire and soft aluminum trapezoidal single wire to ensure that the conductor structure is round, tight and smooth, and has good conductivity. The reinforced aluminum alloy tube supports the expanded diameter conductor and is used as the station introduction transmission conductor, which has the advantages of stable structure, large current carrying capacity, high strength, good safety, and high resistance to corona and radio interference.

[0022] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A reinforced aluminum alloy tube supporting an expanded diameter conductor, characterized in that: The invention comprises a support tube (1), a reinforcing member (2), a Z-shaped single-wire twisted conductor layer (3), and a trapezoidal single-wire twisted conductor layer (4), wherein a spiral groove (1-1) is arranged in the axial direction of the support tube (1), the reinforcing member (2) is arranged in the spiral groove (1-1), the Z-shaped single-wire twisted conductor layer (3) is arranged outside the support tube (1), and the trapezoidal single-wire twisted conductor layer (4) is arranged outside the Z-shaped single-wire twisted conductor layer (3).

2. The reinforced aluminum alloy tube supporting expanded diameter conductor according to claim 1, characterized in that: The wall thickness of the support tube (1) is 2.5 to 3.5 mm, the outer diameter of the support tube (1) is 25 to 80 mm, the spiral groove (1-1) comprises 3 to 6 grooves, the spiral pitch of the spiral groove (1-1) is 600 to 100 mm, and the depth of the spiral groove (1-1) is 2.5 to 6.0 mm.

3. The reinforced aluminum alloy tube supporting expanded diameter conductor according to claim 1, characterized in that: The reinforcing member (2) is composed of a plurality of FRP wires (2-1) spirally embedded in a spiral groove (1-1); the diameter of the FRP wire (2-1) is 2.0 to 6.0 mm, and the diameter of the FRP wire (2-1) is smaller than the depth of the spiral groove (1-1).

4. The reinforced aluminum alloy tube supporting expanded diameter conductor according to claim 1, characterized in that: The Z-shaped single-wire twisted conductor layer (3) is formed by twisting a plurality of Z-shaped single wires (3-1), and adjacent Z-shaped single wires (3-1) cooperate with each other in structure.

5. The reinforced aluminum alloy tube-supported expanded-diameter conductor according to claim 1, characterized in that: The trapezoidal single-wire twisted conductor layer (4) is formed by twisting a plurality of trapezoidal single wires (4-1).

6. The reinforced aluminum alloy tube-supported expanded-diameter conductor according to claim 4, characterized in that: The rotation direction of the spiral groove (1-1) is opposite to the twisting direction of the Z-shaped single wires (3-1) in the Z-shaped single wire twisted conductor layer (3).

7. The reinforced aluminum alloy tube-supported expanded-diameter conductor according to claim 1, characterized in that: The reinforced aluminum alloy tube supports the expanded diameter conductor which is a hollow conductor with ventilation holes at both ends.

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