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Device and method for efficiently extracting diluent in insulating paint

An extraction method and technology for diluent, which are applied in the field of devices for efficiently extracting diluent in insulating paint, can solve the problems of reduced measurement accuracy, reduced distillation efficiency, long time required for diluent, etc., and achieve the effect of improving efficiency and precision

Inactive Publication Date: 2021-11-30
ZHUHAI GREE ELECTRIC ENTERPRISES +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Insulating varnish is composed of film-forming substances and diluents. The diluent in insulating varnish needs to be tested to see if it meets the requirements of REACH and RoHS. At present, the method of extracting and testing the diluent in insulating varnish is: first weigh the sample of insulating varnish and put it in In the casing, extract with organic solvent, and after purification and filtration, get the diluent to be tested, and finally use GC-MS to analyze the results. decreased
Or adopt the traditional distillation method, use heating mantle, flask, thermometer, condenser, horn, Erlenmeyer flask and distillation head to assemble the extraction device, the insulating varnish will evaporate the gaseous diluent, and part of it will be cooled into liquid diluent in the condenser and flow into it. Erlenmeyer flask, part of which is cooled to a liquid diluent at the distillation head, falls back into the flask, which causes wasteful work of distillation and reduces the efficiency of distillation

Method used

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  • Device and method for efficiently extracting diluent in insulating paint
  • Device and method for efficiently extracting diluent in insulating paint
  • Device and method for efficiently extracting diluent in insulating paint

Examples

Experimental program
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Embodiment example 1

[0028] This embodiment provides an extraction method for efficiently extracting the diluent in insulating varnish, which specifically includes the following steps:

[0029] (1) Weigh the insulating varnish and put it in the flask 1 of the device;

[0030] (2) Heat the flask 1 in (1) with the heating mantle 2, so that the insulating varnish in the flask 1 evaporates the gaseous diluent, forming an updraft, most of the gaseous diluent enters the first condenser tube 3, and a small part enters the second condenser tube 4;

[0031] (3) The gaseous diluent is cooled into liquid diluent A in the first condensing pipe 3, and the liquid diluent A flows back and falls along the inner wall of the first condensing pipe 3, and the gaseous diluent is cooled into liquid diluent in the second condensing pipe 4 B;

[0032] (4) After the liquid diluent A flows to the drainage device at the bottom of the inner wall of the first condensation pipe 3, it flows to the inclined outlet along the dr...

Embodiment example 2

[0045] Compared with the implementation case 1 in this embodiment, the first condensation pipe in the embodiment 1 is replaced with a distillation head, and the implementation steps are as follows:

[0046] (1) Weigh the insulating varnish and put it in the flask 1 of the device;

[0047] (2) Heat the flask 1 in (1) with the heating mantle 2, so that the insulating varnish in the flask 1 evaporates the gaseous diluent, forming an updraft, most of the gaseous diluent enters the distillation head, and a small part enters the second condensation pipe 4 ;

[0048] (3) The gaseous diluent is cooled into liquid diluent A in the distillation head, and the liquid diluent A flows back and falls along the inner wall of the distillation head, and the gaseous diluent is cooled into liquid diluent B in the second condensation pipe 4;

[0049] (4) A part of liquid diluent A flows into the second condensation pipe 4, and a part flows back into the flask 1;

[0050] (5) After the liquid dil...

Embodiment example 3

[0052] In this embodiment, compared with the implementation case 1, the first condensation pipe in the embodiment 1 is replaced with a distillation head, and the horn is replaced with a vacuum receiving pipe, and the implementation steps are as follows:

[0053] (1) Weigh the insulating varnish and put it in the flask 1 of the device;

[0054] (2) Heat the flask 1 in (1) with the heating mantle 2, so that the insulating varnish in the flask 1 evaporates the gaseous diluent, forming an updraft, most of the gaseous diluent enters the distillation head, and a small part enters the second condensation pipe 4 ;

[0055](3) The gaseous diluent is cooled into liquid diluent A in the distillation head, and the liquid diluent A flows back and falls along the inner wall of the distillation head, and the gaseous diluent is cooled into liquid diluent B in the second condensation pipe 4;

[0056] (4) A part of liquid diluent A flows into the second condensation pipe 4, and a part flows ba...

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Abstract

The invention discloses a device and method for efficiently extracting a diluent in insulating paint. The method comprises the following steps that: insulating paint is weighed and put into a flask of the device; the flask is heated to evaporate the insulating paint in the flask to obtain a gaseous diluent; the gaseous diluent is cooled into a liquid diluent A in a first condensation pipe, and the gaseous diluent is cooled into a liquid diluent B in a second condensation pipe; after flowing to an arc-shaped inclined circular ring at the bottom of the inner wall of the first condensation pipe, the liquid diluent A flows to an inclined outlet along the arc-shaped inclined circular ring and flows into the second condensation pipe; and the liquid diluent A and the liquid diluent B converge in the second condensation pipe and then flow into a conical flask through an ox horn device, and collection and extraction are completed. According to the invention, the diluent in the insulating paint can be extracted in a short time, other chemicals are not added, the extraction precision is improved, the cooled liquid diluent does not flow back to the flask, idle work for distillation does not exist, and the distillation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of diluent extraction, in particular to a device and an extraction method for efficiently extracting diluent in insulating varnish. Background technique [0002] Insulating varnish, also called insulating paint, is a paint with excellent electrical insulation. It has good electrochemical properties, thermal properties, mechanical properties and chemical properties. It is mostly varnish and colored paint. Insulating varnish is a kind of special varnish in varnish. Insulating varnish is an important insulating material based on high molecular polymer, which can be cured into an insulating film or an insulating whole under certain conditions. [0003] Insulating varnish is composed of film-forming substances and diluents. The diluent in insulating varnish needs to be tested to see if it meets the requirements of REACH and RoHS. At present, the method of extracting and testing the diluent in insulating varnish...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/00B01D5/00
CPCB01D3/00B01D5/0033B01D2221/10
Inventor 林镇群任雪熊露良马红杰李明哲姚荣文
Owner ZHUHAI GREE ELECTRIC ENTERPRISES