Solid-state waterproof underground energy-saving transformer

Abstract

The invention discloses a solid-state waterproof underground energy-saving transformer. The transformer comprises an oil tank, a transformer core and a cover board, wherein the transformer also comprises a high voltage connecting sleeve pipe and a low voltage connecting sleeve pipe; the oil tank is filled with transformer oil; the top of the oil tank is connected with the cover board through a fastening bolt; the oil tank and the cover board are sealed through an O-shaped sealing strip; the high voltage connecting sleeve pipe and the low voltage connecting sleeve pipe are fixed on the cover board through a bolt; a high voltage wire and a low voltage wire are connected to lead clamps of the transformer core in the oil tank through fitting terminals in the high voltage connecting sleeve pipe and the low voltage connecting sleeve pipe respectively; and the internal spaces of the high voltage connecting sleeve pipe and the low voltage connecting sleeve pipe are filled with high-density waterproof insulating solidifying blocks, wherein the high density waterproof insulating solidifying blocks are prepared from an insulating mixture by steps of depositing and solidifying. The solid-state waterproof underground energy-saving transformer is energy-saving, convenient to maintain, effectively waterproof and good in sealing performance.

Description

technical field [0001] The invention relates to the field of electric equipment, and more specifically relates to a solid waterproof buried energy-saving transformer. Background technique [0002] The power transmission and distribution and control equipment manufacturing industry is a national advanced manufacturing industry and a high-tech industry, supported by a number of national policies. "The Outline of the Twelfth Five-Year Plan for National Economic and Social Development of the People's Republic of China" Chapter 11 Promoting the Reform of Energy Production and Utilization Mode Section 3 Strengthening the Construction of Energy Transmission Channels: Adapting to Large-Scale Cross-regional Power Transmission and New Energy Power Generation To meet the requirements of grid connection, accelerate the construction of a modern power grid system, further expand the scale of west-to-east power transmission, improve regional backbone power grids, develop UHV and other larg...

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Problems solved by technology

[0007] At present, the widely used buried transformers mostly use oil-immersed transformers, and the shell of the oil-immersed transformers is used to achieve the purpose of anti-leakage and waterproof. However, there are the following types of problems in actual operation: the high voltage of many buried transformers The connection method adopts the detachable connector (plug head) used in the ordinary European or American outdoor cable branch box to connect, and the sealing is not enough; the box body of most buried transformers has not been treated with special acid Long-term operation in an underground humid environment will corrode the box shell, which will lead to potential safety hazards in power operation; many buried transformers themselves do not have the function of underground operation, and can only rely on the foundation, foundation, and pit cover to be fully sealed. Waterproof and moisture-proof. Once the cover plate is damaged, water or moisture intrusion will cause hidden dangers in power operation; the operation of many buried transformers depends on the foundation, foundation, and built-in suction pumps in the corners of pits to drain water. If the situation is poured into the underground foundation, the excretion function will be lost, which will lead to potential safety hazards in the operation of the transformer; the high-voltage connection method of many buried transformers adopts the traditional silicone rubber soft connection method to be exposed in the pit, which cannot effectively prevent small animals and external mechanical forces damage, thereby increasing the safety hazard of power operation

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