JPS6324570Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to an aluminum power transmission line having a surfactant coating. Conventionally, aluminum power transmission lines that connect steel towers are coated with oil from manufacturing machines, erection wire ropes, safes, etc. during the manufacturing process and the process of connecting the overhead lines to the towers. If oil is attached to the surface of an aluminum power transmission line in this way, immediately after it rains during power transmission after the overhead line has been transmitted, raindrops will flow out due to the electrical corona discharge on the surface due to the uneven wetness of the surface. The drawback is that it is slow and causes audible noise. Therefore, conventionally, the oil on the power transmission line was removed by wiping it with a cloth after the overhead line was installed, but wiping it off after the overhead line was completed was impossible and dangerous because the work was done in high air. This is extremely difficult. For this reason, the inventors of the present invention have developed a power transmission line in which a surfactant film is formed on the surface of the power transmission line. In other words, if a surfactant film is formed on the surface of a power transmission line, when it rains, it will interact with oils that adhere to the power line during the manufacturing process and grease that adheres from the wire ropes and metal wheels in the overhead lines, causing water ( In the rain) Oil drop type (o/
This is because it becomes a w-type emulsion, degreases and washes the oils and fats on its surface, and allows water to drip and flow quickly. The remarkableness of this effect is clear from the following experimental results. In other words, a 1 m sample of steel-core aluminum stranded wire (cross-sectional area: 810 mm ² ) immediately after manufacturing (mineral oil from the manufacturing process was normally attached) was impregnated with an ether-type nonionic surfactant. After applying lubricating grease (#1000) to the felt, the steel core was sprayed with tap water at a rate of 2/sec for 3 minutes. Immediately after watering, a comprehensive evaluation of the degree of residual water droplets on the surface of the aluminum stranded wire, the degree of cloudy staining caused by emulsion, etc., was carried out immediately after watering, and the results are shown in Table 1.

[Table] According to the above experiment, water droplets can be completely removed from aluminum power transmission lines having an ether-type nonionic surfactant coating within a few minutes after watering. This means that oils and fats adhering to the surface of surfaces with a surfactant film can be naturally removed by rainfall, which helps to quickly eliminate water-wet conditions on the surface of power transmission lines that cause audible noise. Table 1 shows things that are more effective than things that don't.
This clearly shows. The present invention relates to an improvement of an aluminum power transmission line having a surfactant coating. A method for forming a surfactant film on the surface of an aluminum power transmission line may be coating or dipping using a surfactant or its solution, but an efficient forming method is desired in consideration of the manufacturing process and overhead line process. That is, in the manufacturing process of aluminum power transmission lines, rust preventive oil is usually applied in the final process. Therefore, we considered dissolving an oil-soluble surfactant in the anti-rust oil in advance and applying it together with the anti-rust oil in the final process of manufacturing aluminum power transmission lines. As a result of mixing various surfactants with rust preventive oil, it was confirmed that they were uniformly dispersed with fine particle sizes. If a mixture of anti-corrosion oil and a specific surfactant is applied to aluminum power lines in this way, the oils and fats will be easily dispersed into fine particles in the water by rainfall, making removal more efficient. It turned out that. Moreover, when used in this way, the amount of oil that will adhere to aluminum power transmission lines can be predicted from experience, so the amount of surfactant dissolved in the anti-corrosion oil can be kept to the minimum necessary, so not only is there no waste, but It can be adjusted so as not to adversely affect the characteristics of aluminum power transmission lines. Furthermore, this method does not require any new application means and is extremely simple. In the present invention, it is the simplest and most effective method since a surfactant is used in the final step of applying the rust preventive agent. It is also effective to use a mixture of surfactants with oils that are expected to adhere at other stages, such as during manufacturing or overhead wiring, or to apply surfactants to aluminum power transmission lines. Rather than applying a surfactant after applying the rust preventive oil used during manufacturing, it is much more effective to remove the rust preventive oil and to mix the two from the beginning as in the present invention. Furthermore, the ability to remove oils that are expected to adhere from the outside during overhead contact lines will not be reduced in any way. The surfactant added and dissolved in the rust preventive oil has good solubility in the rust preventive oil,
Those with good dispersibility in water are selected depending on the HLB number and type of rust preventive oil. In particular, ether-type nonionic surfactants such as polyoxyethylene oleyl ether, polyoxyethylene alkyl phenol ether, and polyoxyethylene nonyl phenol ether were excellent. Example: Mix 100 parts of a rust preventive agent used in the manufacturing process of steel-core aluminum stranded wire (cross-sectional area: 810 mm ² ) with 10 parts of an ether-type nonionic surfactant (for example, the trade name Emalogen), and add this to the steel-core aluminum stranded wire. The power transmission line of the present invention was obtained by applying the coating to the surface of the stranded wire.This is shown in Figure 1.In the figure, 1 is a steel wire, 2 is an aluminum wire, and 3 is a rust preventive oil and an ether type nonionic surfactant. The effectiveness of this steel-core aluminum stranded wire was tested as ^follows : Lubricating oil, Approximately 1 in the order of rust preventive oil and grease with surfactant added and dissolved:
It was applied at a ratio of 1:1. The coated sample was sprinkled with tap water at a rate of 2/sec for 3 minutes using a funnel, and the residual state of oil and fat and water droplets was observed after 1 minute. The surfactants used at this time are shown in Table 2.

[Table] In this test result, the anionic neoperex
With F60 (trade name), oil remained and water droplets were difficult to remove, but the other four types of surfactants completely removed oil and fats and drained water very well. Surfactants were found to be suitable. As described above, the present invention has various effects and is extremely effective.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention. 1... Steel wire, 2... Aluminum wire, 3... Film of a mixture of rust preventive oil and ether type nonionic surfactant.

Claims (1)

[Scope of utility model registration request] An aluminum power transmission line whose surface is coated with at least a mixture of rust preventive oil and an ether-type nonionic surfactant.