Automatic varnishing temperature control device and method

Abstract

The invention relates to an automatic varnishing temperature control device and method and belongs to the technical field of varnished winding wire production equipment for transformers. The technicalscheme of the invention is that a varnish storage tank (1) and a mother pipeline (13) are connected with each other through a mother pipeline main valve (18); the mother pipeline (13) and a varnishing room (15) are connected with each other through a branch pipeline valve (14); a heat conduction layer (10) coats the initial section of the mother pipeline (13); a ceramic heating tile (9) is installed on the heat conduction layer (10); a temperature sensor (11) is arranged in the mother pipeline (13) and is connected a multi-channel temperature controller (5); the output end of the multi-channel temperature controller (5) is connected to the ceramic heating tile (9) via a relay unit (4) and a terminal box (8). The automatic varnishing temperature control device and method can automaticallycontrol the temperature of insulating varnish, maintains the temperature and the viscosity of the raw material insulating varnish constant, and can be set according to technological requirements to achieve optimal temperature and viscosity control of the insulating varnish.

Description

technical field [0001] The invention relates to an automatic paint-adding temperature control device and method, and belongs to the technical field of production equipment for enamelled winding wires for transformers. Background technique [0002] Enameled wires for transformer windings are generally made by coating insulating varnish on copper or aluminum conductors of a certain specification and drying them. At present, the manufacturing process of enameled wire is relatively mature, and the more advanced paint supply method is centralized automatic paint supply. The main pipe connected to the paint storage tank is connected to the branch pipe to supply paint for multiple paint booths, which effectively solves the problem of decentralized paint supply. Pollution, low production efficiency and serious waste. However, in the actual process implementation, when painting on the conductor, due to the sudden drop of the ambient temperature or the large change in a short period ...

AI Technical Summary

Problems solved by technology

However, in the actual process implementation, when painting on the conductor, due to the sudden drop of the ambient temperature or the large change in a short period of time, the viscosity of the insulating varnish changes rapidly with the change of temperature, and the consistency of the viscosity of the insulating varnish cannot be fully guaranteed. If the temperature curve of the paint drying furnace is not adjusted in time, it will seriously affect the quality and stability of the paint

Especially when the temperature is low in winter, the viscosity of the insulating paint is too high to meet the painting process conditions, which will easily lead to unqualified products

For this reason, enameled wire manufacturers generally use simple electric heating equipment to bake the painting work area, which has disadvantages such as uneven insulation and heating, and great safety hazards, and the effect is not ideal.

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