Fixture for zinc-spraying of circular coil

Abstract

The invention relates to a fixture for zinc-spraying of a circular coil and aims to provide a fixture, simple in structure, quick to mount and demount, reliable to fix and convenient to use. The fixture is characterized by comprising a circular turnplate; the middle of the turnplate is provided with a hole in which a non-spray part of the circular coil is placed in; a connecting rack which is square and has one end opened is fixed to an opening in the rear of the turnplate; the open end of the connecting rack is fixed to the turnplate; a rear plate of the connecting rack is provided with a pinhole concentric to the turnplate; the non-spray part of the circular coil is fixed to the hole through a connector; the turnplate and the connecting rack are rested on an underframe and can rotate on the same; the underframe comprises an L-shaped frame support; a fixing plate which is vertical is fixed on a horizontal part of the L-shaped frame support; two sides of the inside of the fixing plate are provided with rollers, respectively, used for resting the turnplate; a pin block is fixed to a vertical part of the L-shaped frame support; the pin block is provided with a positioning hole equal to the pinhole in center and diameter; a pin is inserted into the pinhole and the positioning hole.

Description

technical field [0001] The invention relates to a tooling for spraying, in particular to a fixing device for spraying zinc on the surface of a toroidal transformer coil. Background technique [0002] Zinc spraying on the surface of transformer coils is widely used in special high-power, especially high-voltage rectifier transformers as an electric field shielding layer. High-power and high-voltage coils are one of the core components of high-power special transformers, which directly undertake the functions of transmitting large currents and withstanding high voltages and high electric fields. This high-power high-voltage special transformer consists of a toroidal coil such as figure 1 , figure 2 , image 3 As shown, it is composed of iron core, water cooler, coupling circuit, external insulation shielding cover and structural support. When the toroidal coil is working, due to the action of high voltage and high current, a large magnetic field and electric field will be...

AI Technical Summary

Problems solved by technology

In order to ensure the above characteristics, the method of manual electric polarization zinc spraying is usually used; because the coil is generally large and the zinc spray gun is bulky and not flexible enough, it is difficult for workers to control the distance and angle of spraying during operation, which often results in uneven thickness and partial spraying. Too much or too little, even leakage and other bad phenomena, seriously affect the spraying quality of the transformer

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