A kind of pure electrical laminated wood and preparation method thereof

Abstract

The invention discloses a pure electric laminated wood and a preparation method thereof. A non-break-point rotary cut veneer is used as a raw material, the compatibility of the laminated wood and transformer oil can be improved by using the biological characteristics of wood tube holes, the acidity and alkaline of wood is changed through the processes such as raw material wood lignin extraction, the insulation performance of the laminated wood is improved, and the service life of a transformer is prolonged; and deionized pure water is adopted as basic cooking liquid, through an oxygen-alkali method and a chemical extraction method, the organic matters and inorganic matters in the rotary cut veneer fibers are removed, the content of metal minerals and ash is reduced, the electric strength of the laminated wood is improved, by adjusting the acidity and alkaline of the rotary cut veneer of the laminated wood, the laminated wood manufactured by the preparation method can be installed in the transformer so that corrosion of the transformer equipment is eliminated, the insulation properties of the equipment are improved, and the service life of the transformer and mutual inductor equipment is prolonged.

Description

technical field [0001] The invention belongs to the electric power industry, and in particular relates to an electrical laminated wood and a preparation method thereof. Background technique [0002] The development and use of laminated wood has increased benefits and reduced costs for the transformer manufacturing industry. However, with the development of the power industry, transformers are developing in the direction of small volume and high voltage level, and the variety is also increasing. Thus, insulating laminates with high insulating properties and high mechanical strength are required. At present, there are two kinds of insulating laminates commonly used in the market: electrical laminated wood and laminated cardboard. Among them, electrical laminated wood has good mechanical properties, but according to the current processing technology, the produced electrical laminated wood has poor insulation and cannot meet the high requirements. Requirements for the use of g...

AI Technical Summary

Problems solved by technology

At present, there are two kinds of insulating laminates commonly used in the market: electrical laminated wood and laminated cardboard. Among them, electrical laminated wood has good mechanical properties, but according to the current processing technology, the produced electrical laminated wood has poor insulation and cannot meet the high requirements. Requirements for the use of grade transformers; although the insulating cardboard produced on the market can meet the insulation requirements, it has the characteristics of low mechanical strength, weak plasticity, easy degradation, and high price, which hinders the development of transformers in the power industry

[0003] At present, many companies in the industry have made a lot of research and development investment in the technology of improving the insulation of electrical laminated wood, but due to technical limitations, they cannot overcome the problems of low penetration rate of laminated wood to transformer oil and hydrogen generation during use. , and too much ash and impurities in wood have caused frequent breakdowns and other accidents in the manufacture of high-grade transformers. Now it is urgent to make research and development breakthroughs in technology