A steel core heat-resistant aluminum alloy stranded wire

Abstract

The utility model relates to the technical field of cables, and in particular to a steel core heat-resistant aluminum alloy stranded wire, comprising an ultra-high strength galvanized steel wire, wherein the ultra-high strength galvanized steel wire is wound together by a plurality of ultra-high strength galvanized steel monofilaments; the outer surface of the ultra-high strength galvanized steel wire is spirally wound with an ultra-strong steel core inner layer, and the outer surface of the ultra-strong steel core inner layer is spirally wound with an ultra-strong steel core outer layer; the outer surface of the ultra-strong steel core outer layer is spirally wound with an inner layer of a heat-resistant aluminum alloy conductor, and the outer surface of the inner layer of the heat-resistant aluminum alloy conductor is spirally wound with an outer layer of a heat-resistant aluminum alloy conductor. The utility model enhances the overall strength and heat resistance of the steel core heat-resistant aluminum alloy stranded wire, can be better used in bridges and railway foundation components, and has good corrosion resistance and a long service life.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a steel core heat-resistant aluminum alloy stranded wire. Background Art

[0002] In bridges and railway foundation components, steel strands are widely used as carriers of concrete components. Each steel strand is composed of multiple steel wires twisted together.

[0003] After searching, it was found that the Chinese patent with publication number CN206075848U disclosed a steel-core heat-resistant aluminum alloy stranded wire. By monitoring the changes in the fiber grating, real-time monitoring of the stress state of the prestressed steel stranded wire can be achieved, and hidden dangers of the steel stranded wire can be discovered in advance, greatly improving safety. In this patent, the tensile strength of the aluminum alloy stranded wire is insufficient, and a sudden large stress state occurs. When the working tensile stress of the aluminum alloy stranded wire exceeds its yield stress, the aluminum alloy stranded wire will be in a yield tensile state. When the deformation value exceeds the limit, the maximum bearing stress of this aluminum alloy stranded wire will decrease sharply, and a break will occur. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a steel core heat-resistant aluminum alloy stranded wire, which solves the problem that the tensile strength of the existing aluminum alloy stranded wire is insufficient and a sudden large stress state occurs, so that when the working tensile stress of the aluminum alloy stranded wire exceeds its yield stress, the aluminum alloy stranded wire will be in a yield tensile state. When the deformation value exceeds the limit, the maximum bearing stress of this aluminum alloy stranded wire decreases sharply, resulting in breakage.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a steel core heat-resistant aluminum alloy stranded wire, comprising an ultra-high strength galvanized steel wire, wherein the ultra-high strength galvanized steel wire is formed by winding together a plurality of ultra-high strength galvanized steel monofilaments;

[0006] The outer surface of the ultra-high strength galvanized steel wire is spirally wound with an ultra-strong steel core inner layer, and the outer surface of the ultra-strong steel core inner layer is spirally wound with an ultra-strong steel core outer layer;

[0007] The outer surface of the super-strong steel core outer layer is spirally wound with a heat-resistant aluminum alloy conductor inner layer, and the outer surface of the heat-resistant aluminum alloy conductor inner layer is spirally wound with a heat-resistant aluminum alloy conductor outer layer.

[0008] Furthermore, it also includes a carbon fiber composite rod, and a plurality of the ultra-high strength galvanized steel monofilaments are spirally wound on the outer surface of the carbon fiber composite rod.

[0009] Furthermore, one end of the carbon fiber composite rod is connected to an optical fiber, and one end of the optical fiber is connected to an optical time domain reflectometer.

[0010] Furthermore, the ultra-high strength galvanized steel monofilament adopts 19 / 2.32-G4A galvanized steel wire.

[0011] Furthermore, the extra-strong steel core inner layer and the extra-strong steel core outer layer are both formed by spirally winding multiple extra-strong galvanized steel single wires, and the tensile strength of the extra-strong galvanized steel single wires is greater than 1770Mpa, and the stress at 1% elongation is greater than 1550Mpa.

[0012] Furthermore, the inner layer and the outer layer of the heat-resistant aluminum alloy conductor are both formed by spirally winding a plurality of heat-resistant aluminum alloy single wires, and the heat-resistant aluminum alloy single wires are 60% IACS heat-resistant aluminum alloy stranded wires.

[0013] Furthermore, an inert gas cavity is provided between the plurality of heat-resistant aluminum alloy single wires, and the inert gas cavity is filled with an inert gas.

[0014] Furthermore, an air inlet nozzle is provided on the outer side of the inert gas chamber.

[0015] By means of the above technical solution, the utility model provides a steel core heat-resistant aluminum alloy stranded wire, which has at least the following beneficial effects:

[0016] 1. The steel core heat-resistant aluminum alloy stranded wire has an ultra-strong steel core inner layer spirally wound on the outer surface of the ultra-high strength galvanized steel wire, an ultra-strong steel core outer layer spirally wound on the outer surface of the ultra-strong steel core inner layer, an inner layer of the heat-resistant aluminum alloy conductor is spirally wound on the outer surface of the ultra-strong steel core outer layer, and an outer layer of the heat-resistant aluminum alloy conductor is spirally wound on the outer surface of the inner layer of the heat-resistant aluminum alloy conductor. This enhances the overall strength and heat resistance of the steel core heat-resistant aluminum alloy stranded wire, and can be better used in bridges and railway foundation components, and has good corrosion resistance and a long service life.

[0017] 2. The steel core heat-resistant aluminum alloy stranded wire and the heat-resistant aluminum alloy single wire adopt 60% IACS heat-resistant aluminum alloy stranded wire. The current carrying capacity of 60% IACS heat-resistant aluminum alloy stranded wire is 1.0171 times that of 58% IACS of the same specification, and the mechanical strength is higher when used at high temperature.

[0018] 3. The steel core heat-resistant aluminum alloy stranded wire places a carbon fiber composite rod inside a super-high-strength galvanized steel wire. The carbon fiber composite rod is connected to an optical time domain reflectometer via an optical fiber. The optical time domain reflectometer monitors the changes in the fiber grating to achieve real-time monitoring of the stress state of the prestressed aluminum alloy stranded wire, thereby discovering hidden dangers of the aluminum alloy stranded wire in advance and greatly improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2It is a schematic diagram of the monitoring structure of the utility model.

[0022] In the figure: 100, extra high strength galvanized steel wire; 200, extra strong steel core inner layer; 300, extra strong steel core outer layer; 400, heat-resistant aluminum alloy conductor inner layer; 500, heat-resistant aluminum alloy conductor outer layer; 600, carbon fiber composite rod; 700, optical fiber; 800, optical time domain reflectometer. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the prior art, the tensile strength of the aluminum alloy stranded wire is insufficient, resulting in a sudden high stress state. When the working tensile stress of the aluminum alloy stranded wire exceeds its yield stress, the aluminum alloy stranded wire will be in a yield tensile state. When the deformation value exceeds the limit, the maximum bearing stress of this aluminum alloy stranded wire decreases sharply, and a break occurs.

[0025] To solve the above problems, see Figure 1 The utility model provides a steel core heat-resistant aluminum alloy stranded wire, including an ultra-high strength galvanized steel wire 100, wherein the ultra-high strength galvanized steel wire 100 is formed by winding together a plurality of ultra-high strength galvanized steel monofilaments, and the ultra-high strength galvanized steel monofilaments are 19 / 2.32-G4A galvanized steel wires;

[0026] The outer surface of the ultra-high-strength galvanized steel wire 100 is spirally wound with an ultra-strong steel core inner layer 200, and the outer surface of the ultra-strong steel core inner layer 200 is spirally wound with an ultra-strong steel core outer layer 300;

[0027] The outer surface of the extra-strong steel core outer layer 300 is spirally wound with a heat-resistant aluminum alloy conductor inner layer 400, and the outer surface of the heat-resistant aluminum alloy conductor inner layer 400 is spirally wound with a heat-resistant aluminum alloy conductor outer layer 500. The overall strength and heat resistance of the steel core heat-resistant aluminum alloy stranded wire are enhanced, and it can be better used in bridges and railway foundation components, and has good corrosion resistance and a long service life.

[0028] See also Figure 2 , a steel core heat-resistant aluminum alloy stranded wire, also includes a carbon fiber composite rod 600, and a plurality of ultra-high-strength galvanized steel monofilaments are spirally wound on the outer surface of the carbon fiber composite rod 600.

[0029] See also Figure 2One end of the carbon fiber composite rod 600 is connected to an optical fiber 700, and one end of the optical fiber 700 is connected to an optical time domain reflectometer 800. The carbon fiber composite rod 600 is placed in the ultra-high strength galvanized steel wire 100, and the carbon fiber composite rod 600 is connected to the optical time domain reflectometer 800 through the optical fiber 700. The optical time domain reflectometer 800 monitors the grating changes of the optical fiber 700 to achieve real-time monitoring of the stress state of the prestressed aluminum alloy stranded wire, discover hidden dangers of the aluminum alloy stranded wire in advance, and greatly improve safety.

[0030] See also Figure 1 The super-strong steel core inner layer 200 and the super-strong steel core outer layer 300 are both made of multiple super-strong galvanized steel single wires spirally wound, and the tensile strength of the super-strong galvanized steel single wire is greater than 1770Mpa, and the stress at 1% elongation is greater than 1550Mpa. The heat-resistant aluminum alloy conductor inner layer 400 and the heat-resistant aluminum alloy conductor outer layer 500 are both made of multiple heat-resistant aluminum alloy single wires spirally wound, and the heat-resistant aluminum alloy single wires use 60% IACS heat-resistant aluminum alloy stranded wire. The heat-resistant aluminum alloy single wire uses 60% IACS heat-resistant aluminum alloy stranded wire, and the current carrying capacity of 60% IACS heat-resistant aluminum alloy stranded wire is 1.0171 times that of 58% IACS of the same specification, and the mechanical strength is higher when used at high temperatures.

[0031] An inert gas cavity is provided between multiple heat-resistant aluminum alloy single wires, and the inert gas cavity is filled with inert gas. An air inlet nozzle is provided on the outside of the inert gas cavity. An inert gas cavity is provided between multiple heat-resistant aluminum alloy single wires, and the inert gas cavity is filled with inert gas. The inert gas can effectively block external heat from entering the interior of the aluminum alloy stranded wire, thereby improving heat resistance.

[0032] So far, the present embodiment has been described in detail in conjunction with the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the present invention. The present invention spirally wraps the outer surface of the ultra-high-strength galvanized steel wire 100 with an ultra-strong steel core inner layer 200, spirally wraps the outer surface of the ultra-strong steel core inner layer 200 with an ultra-strong steel core outer layer 300, spirally wraps the outer surface of the ultra-strong steel core outer layer 300 with a heat-resistant aluminum alloy conductor inner layer 400, and spirally wraps the outer surface of the heat-resistant aluminum alloy conductor inner layer 400 with a heat-resistant aluminum alloy conductor outer layer 500, thereby enhancing the overall strength and heat resistance of the steel core heat-resistant aluminum alloy stranded wire, and can be better used in bridges and railway foundation components, and has good corrosion resistance and a long life cycle.

[0033] A carbon fiber composite rod 600 is placed inside an ultra-high strength galvanized steel wire 100. The carbon fiber composite rod 600 is connected to an optical time domain reflectometer 800 via an optical fiber 700. The optical time domain reflectometer 800 monitors the grating changes of the optical fiber 700 to achieve real-time monitoring of the stress state of the prestressed aluminum alloy stranded wire, thereby discovering hidden dangers of the aluminum alloy stranded wire in advance and greatly improving safety.

[0034] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel core heat-resistant aluminum alloy stranded wire, comprising an ultra-high strength galvanized steel wire (100) and a carbon fiber composite rod (600), characterized in that: The ultra-high strength galvanized steel wire (100) is composed of a plurality of ultra-high strength galvanized steel monofilaments wound together, and the plurality of ultra-high strength galvanized steel monofilaments are spirally wound on the outer surface of the carbon fiber composite rod (600); The outer surface of the ultra-high-strength galvanized steel wire (100) is spirally wound with an ultra-strong steel core inner layer (200), and the outer surface of the ultra-strong steel core inner layer (200) is spirally wound with an ultra-strong steel core outer layer (300); The outer surface of the extra-strong steel core outer layer (300) is spirally wound with a heat-resistant aluminum alloy conductor inner layer (400), and the outer surface of the heat-resistant aluminum alloy conductor inner layer (400) is spirally wound with a heat-resistant aluminum alloy conductor outer layer (500); One end of the carbon fiber composite rod (600) is connected to an optical fiber (700), and one end of the optical fiber (700) is connected to an optical time domain reflectometer (800).

2. The steel core heat-resistant aluminum alloy stranded wire according to claim 1, characterized in that: The ultra-high strength galvanized steel monofilament adopts 19 / 2.32-G4A galvanized steel wire.

3. The steel core heat-resistant aluminum alloy stranded wire according to claim 1, characterized in that: The extra-strong steel core inner layer (200) and the extra-strong steel core outer layer (300) are both formed by spirally winding a plurality of extra-strong galvanized steel single wires, the tensile strength of the extra-strong galvanized steel single wires being greater than 1770 MPa, and the stress at 1% elongation being greater than 1550 MPa.

4. The steel core heat-resistant aluminum alloy stranded wire according to claim 1, characterized in that: The heat-resistant aluminum alloy conductor inner layer (400) and the heat-resistant aluminum alloy conductor outer layer (500) are both formed by spirally winding a plurality of heat-resistant aluminum alloy single wires, and the heat-resistant aluminum alloy single wires are 60% IACS heat-resistant aluminum alloy stranded wires.

5. The heat-resistant aluminum alloy steel core stranded wire according to claim 4, characterized in that: An inert gas cavity is provided between the plurality of heat-resistant aluminum alloy single wires, and the inert gas cavity is filled with an inert gas.

6. The heat-resistant aluminum alloy steel core stranded wire according to claim 5, characterized in that: An air inlet nozzle is arranged on the outer side of the inert gas chamber.

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