Method for twisting corrosion-resistant steel-cored aluminum stranded wire

Abstract

According to the method for stranding the corrosion-resistant steel-cored aluminum stranded wire, a frame stranding machine is arranged on one side of an electrolyte pool, a wire stranding disc is arranged on the side wall, close to the frame stranding machine, of the electrolyte pool, the wire stranding disc is installed on the side wall of the electrolyte pool through a bearing assembly, a center hole is formed in the center of the wire stranding disc, and a plurality of wire holes are formed in the periphery of the center hole. The steel core sequentially penetrates through the frame stranding machine and the electrolyte pool from left to right through traction of the traction device, the aluminum wire penetrates through the wire hole to enter the electrolyte pool after being led out of the frame stranding machine, and the frame stranding machine and the stranding disc synchronously rotate around the steel core so that the aluminum wire penetrating through the stranding disc can be stranded on the steel core. According to the method provided by the invention, an existing stranding mode that the frame stranding machine and the plating tank are stacked up and down is improved, and the frame stranding machine is arranged on one side of the plating tank, so that installation and feeding are simpler. The electrolyte circulating system and the electrolyte pool can be arranged on the same plane, fall is reduced, and energy consumption of the water pump is reduced.

Description

Technical Field

[0001] The invention relates to the field of overhead lines, and in particular to a method for twisting corrosion-resistant steel-core aluminum stranded wires. Background Art

[0002] Patent CN118888222B discloses a production device for corrosion-resistant steel-core aluminum stranded wire. It vertically stacks a frame stranding machine and two electrolyte cells. Although this allows the ceramic film layer on the surface of the steel core and aluminum conductor to grow more evenly, the entire set of equipment is difficult to install. The vertical setting of the frame stranding machine makes loading inconvenient, and the large height difference between the two electrolyte cells results in high energy consumption of the circulating water pump. Summary of the Invention

[0003] The purpose of the present invention is to provide a method for twisting corrosion-resistant steel-core aluminum stranded wire, which improves the problems of difficult installation, inconvenient loading and high energy consumption of circulating water pumps in existing production equipment without affecting the uniformity of ceramic film growth.

[0004] In order to achieve the above-mentioned purpose of the invention, the technical solution of the present invention is as follows:

[0005] A method for twisting corrosion-resistant steel-core aluminum stranded wire,

[0006] (1) The frame stranding machine is set on one side of the electrolyte cell, the cylindrical electrode is placed flat in the electrolyte cell, and the electrolyte cell is connected to the electrolyte circulation system;

[0007] (2) A stranding drum is provided on the side wall of the electrolyte tank near the frame stranding machine. The stranding drum is mounted on the side wall of the electrolyte tank through a bearing assembly. A wiring hole is provided on the other side wall of the electrolyte tank. A center hole is provided in the center of the stranding drum, and a plurality of wire holes are provided around the center hole.

[0008] (3) Pre-coating an insulating film layer on the surface of the steel core, and pulling the steel core from left to right through the frame stranding machine and the electrolyte tank in sequence by the pulling device, and the steel core passes through the center hole; the aluminum conductor is led out from the frame stranding machine and passes through the wire hole into the electrolyte tank;

[0009] (4) The cylindrical electrode and the steel core aluminum stranded wire are connected to the oxidation power supply respectively;

[0010] (5) Turn on the electrolyte circulation system to immerse the cylindrical electrode in the electrolyte;

[0011] Turn on the oxidation power supply to cause the aluminum conductor and the steel core surface to undergo thermoelectrochemical oxidation reaction simultaneously;

[0012] Turn on the frame stranding machine and stranding drum. The frame stranding machine and stranding drum rotate synchronously around the steel core to strand the aluminum conductor passing through the stranding drum onto the steel core. The stranding point of the aluminum conductor and the steel core is located in the cylindrical electrode, and the stranded steel-core aluminum stranded wire passes through the wiring hole.

[0013] Preferably, in (2), the installation method of the winch drum includes: providing a bearing seat on the side wall of the electrolyte tank, providing an annular flange on the winch drum, installing an annular bearing on the annular flange, and assembling the annular bearing in the bearing seat.

[0014] Preferably, in (5), the method for synchronous rotation of the frame stranding machine and the stranding drum is: an interlayer is set on the side wall of the electrolyte cell, a motor is set in the interlayer, a gear is installed on the output shaft of the motor, a gear ring is set on the outer edge of the stranding drum, the gear and the gear ring are engaged, and the stranding drum and the frame stranding machine are driven to rotate synchronously by the rotation of the motor.

[0015] Preferably, in (3), the steel core passes through the electrolyte tank along the axis of the cylindrical electrode.

[0016] Preferably, in (2), silicone plugs are provided on the center hole, wire hole and routing hole, and the steel core, aluminum conductor and steel core aluminum stranded wire pass through the silicone plugs respectively.

[0017] Preferably, in (3), the wire holes are arranged axially symmetrically around the central hole.

[0018] Compared with the prior art, the beneficial technical effects of the present invention are:

[0019] The present invention improves upon the existing stranding method of stacking a frame strander and a plating bath. Positioning the frame strander on one side of the plating bath simplifies installation and loading. The electrolyte circulation system can be placed on the same plane as the bath, minimizing the drop in height and reducing pump energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the twisting device in Example 1 of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the winch drum in Example 1 of the present invention.

[0022] Figure 3 This is a schematic diagram of the coordination of the wire drum and the motor in the interlayer of the plating tank side wall in Example 1 of the present invention. DETAILED DESCRIPTION

[0023] The following describes the technical solution of the present invention in a clear and complete manner, with reference to specific embodiments. The pre-coated insulating film, the simultaneous plating of the steel core and aluminum conductor in the same bath, the electrolyte and its circulation system, the oxidizing power source, the plating bath system, and the silicone plugs involved are all prior art. For details, reference may be made to the disclosures in patents CN118087000B, CN118888222B, and CN218561666U.

[0024] Example 1

[0025] like Figure 1-3As shown, an apparatus for stranding corrosion-resistant steel-core aluminum stranded wire includes a stranding machine (not shown), an electrolyte tank 1, and a cylindrical electrode 2. The stranding machine is located on one side of the electrolyte tank 1. The cylindrical electrode 2 is placed flat in the electrolyte tank 1. The electrolyte tank 1 contains electrolyte and is also connected to an electrolyte circulation system. The cylindrical electrode 2 is immersed in the electrolyte. The steel core 3 passes through the stranding machine and the electrolyte tank 1 from left to right. The surface of the steel core 3 has a pre-coated insulating film layer.

[0026] A stranding drum 5 is located on one side of the electrolyte cell 1, and a wiring hole 101 is located on the other side. The stranding drum 5 has a central hole 501, surrounded by ten wire holes 502, distributed axially symmetrically around the central hole 501. Alternatively, when producing multi-layer steel-core aluminum stranded wire, the wire holes 502 can be arranged in multiple concentric circles around the central hole 501. The steel core 3 passes through the electrolyte cell 1 through the central hole 501 and is positioned on the axis of the cylindrical electrode 2. Aluminum conductor 6 is drawn from a stranding machine and passed through the wire holes 502 into the electrolyte cell 1. The stranding machine rotates around the steel core 3, and the stranding drum 5 rotates synchronously with the stranding machine, stranding the aluminum conductor 6 that has passed through the stranding drum 5 onto the steel core 3. The junction between the aluminum conductor 6 and the steel core 3 is located within the cylindrical electrode 2. The stranded steel-core aluminum stranded wire 7 then exits through the wiring hole 101. The center hole 501, the wire hole 502, and the wiring hole 101 are all equipped with silicone plugs, through which the steel core, the aluminum conductor, and the steel core aluminum stranded wire pass. The cylindrical electrode 2 and the steel core aluminum stranded wire 7 are connected to the oxidation power supply.

[0027] The electrolyte cell 1 has a bearing seat on its sidewall, and the wire drum 5 has an annular flange 503 with an annular bearing mounted on the annular flange 503. The annular bearing is assembled within the bearing seat. The wire drum 5 can be secured to the turntable of the frame stranding machine via a coupling so that the wire drum 5 and the frame stranding machine rotate synchronously. As another preferred embodiment, the electrolyte cell 1 has an interlayer 102 on its sidewall, which houses a motor 8. The motor 8 has a gear on its output shaft. The outer edge of the wire drum 5 (the area with a smaller diameter than the annular flange) has a gear ring, which meshes with the gear ring.

[0028] The electrolyte circulation system is turned on to immerse the cylindrical electrode 2 in the electrolyte.

[0029] The oxidation power supply is turned on to cause a thermo-electrochemical oxidation reaction to occur synchronously on the surface of the aluminum conductor 6 and the surface of the steel core 3 .

[0030] The frame stranding machine and stranding drum 5 are turned on. They rotate synchronously around the steel core 3, stranding the aluminum conductors 6 that have passed through the stranding drum 3 onto the steel core 3. The junction of the aluminum conductors 6 and the steel core 3 is located within the cylindrical electrode 2. The stranded steel-core aluminum strands 7 are then passed through the routing hole 101. The steel core 3 and aluminum conductors 6 are twisted together while undergoing oxidation coating within the cylindrical electrode 2. Each aluminum conductor 6 rotates around the axis of the cylindrical electrode 2, experiencing the same thermoelectrochemical oxidation conditions, thereby forming a uniform ceramic film layer.

Claims

1. A method for stranding corrosion-resistant steel-core aluminum stranded wire, characterized by: (1) The frame stranding machine is set on one side of the electrolyte cell, the cylindrical electrode is placed flat in the electrolytic cell, and the electrolyte cell is connected to the electrolyte circulation system; (2) A stranding drum is provided on the side wall of the electrolyte tank near the frame stranding machine. The stranding drum is mounted on the side wall of the electrolyte tank through a bearing assembly. A wiring hole is provided on the other side wall of the electrolyte tank. A center hole is provided in the center of the stranding drum, and a plurality of wire holes are provided around the center hole. (3) Pre-coating an insulating film layer on the surface of the steel core, and pulling the steel core through the frame stranding machine and the electrolyte tank in sequence by the traction device, and the steel core passes through the center hole; the aluminum wire is led out from the frame stranding machine and passes through the wire hole into the electrolyte tank; (4) The cylindrical electrode and the steel core aluminum stranded wire are connected to the oxidation power supply respectively; (5) Turn on the electrolyte circulation system to immerse the cylindrical electrode in the electrolyte; Turn on the oxidation power supply to cause the aluminum conductor and the steel core surface to undergo thermoelectrochemical oxidation reaction simultaneously; Turn on the frame stranding machine and stranding drum. The frame stranding machine and stranding drum rotate synchronously around the steel core to strand the aluminum conductor passing through the stranding drum onto the steel core. The stranding point of the aluminum conductor and the steel core is located in the cylindrical electrode, and the stranded steel-core aluminum stranded wire passes through the wiring hole.

2. The method according to claim 1, characterized in that (2) The method for installing the winding drum includes: setting a bearing seat on the side wall of the electrolyte tank, setting an annular flange on the winding drum, installing an annular bearing on the annular flange, and assembling the annular bearing in the bearing seat.

3. The method according to claim 1 or 2, characterized in that In (5), the method for synchronous rotation of the frame stranding machine and the stranding drum is as follows: an interlayer is provided on the side wall of the electrolyte cell, a motor is provided in the interlayer, a gear is installed on the output shaft of the motor, a gear ring is provided on the outer edge of the stranding drum, the gear and the gear ring are engaged, and the stranding drum and the frame stranding machine are driven to rotate synchronously by the rotation of the motor.

4. The method according to claim 1, wherein In (3), the steel core passes through the electrolyte tank along the axis of the cylindrical electrode.

5. The method according to claim 1, wherein In (2), silicone plugs are provided on the center hole, wire hole and routing hole, and the steel core, aluminum conductor and steel core aluminum stranded wire pass through the silicone plugs respectively.

6. The method according to claim 1, characterized in that In (3), the wire holes are arranged axially symmetrically around the central hole.

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