The invention discloses a vacuum
varnish dipping method for an
oil tank oil measurement sensor plastic
pipe, and belongs to the technical field of
varnish dipping methods. The method comprises the following steps that S3, the vacuum degree is tested, a
varnish dipping cylinder is sealed through a sealing cover, after a varnish
inlet valve between the varnish dipping cylinder and a varnish storagetank is closed, a gas
inlet valve and a vacuum gauge valve at the upper end of the varnish dipping cylinder are opened, then a
vacuum pump is started for vacuumizing the varnish dipping cylinder for 1-2 minutes, thus, the vacuum degree in the varnish dipping cylinder is higher than -0.085MPa, the required time is recorded, the vacuum gauge valve is closed, and the varnish
inlet valve is opened, sothat the varnish dipping cylinder communicates with the varnish
storage tank so as to communicate with the outside; and S4, a part is subjected to varnish dipping, specifically, prepared and cured varnish is poured into the varnish
storage tank, the varnish inlet valve is closed, and the sealing cover on the varnish dipping cylinder is taken down. The method is low in cost and insulation varnishconsumption, the penetration ability of insulation varnish can be improved, the
filling rate of insulation varnish can be increased, defects such as pinholes, bubbles and pits in plastic
pipe part substrates can be eliminated, and thus the overall
mechanical strength, insulation strength and
moisture and
mildew resistance of the plastic
pipe are improved.