Rust and residue removing treatment method for inner wall of wire and pipe evaporator pipeline

Abstract

The invention discloses a rust and residue removing treatment method for the inner wall of a wire and pipe evaporator pipeline. The rust and residue removing treatment method comprises the steps of (1) cutting sponge strips into sponge blocks with the size being 20*15*15mm; (2) soaking the sponge blocks with oil and rust removers for 1-5 seconds; (3) clamping the sponge blocks with tweezers and stuffing 1-3 sponge blocks into the opening of the evaporator pipeline; (4) aligning the head of a nitrogen gun to the opening of the evaporator pipeline and blowing the sponge blocks out of the other end of the evaporator pipeline, wherein the pressure of nitrogen ranges from 0.3 mpa to 2.5 mpa. According to the invention, the sponge blocks are soaked with the oil and rust removers for cleaning the inner wall of the wire and pipe evaporator pipeline, and the blowing effect is guaranteed by controlling the blowing time and the blowing pressure; the whole clearing process is scientific and controllable and residues in the pipeline can be reduced to 0.02 milligram per square meter so that the evaporation effect of a wire and pipe evaporator can be guaranteed.

Description

[0001] technical field [0002] The invention belongs to the technical field of refrigeration, and relates to a treatment method for rust and residue removal on the inner wall of a wire tube evaporator pipe. Background technique [0003] The evaporator can be roughly divided into the following five categories from the form of its structure: one is the plate evaporator, the so-called plate evaporator is to lay the evaporation tube on the evaporation plate; the other is the tube evaporator, which consists of a simple The evaporation tube is bent; the third is the wire plate evaporator between the plate evaporator and the wire tube evaporator; the fourth is the finned evaporator; the fifth is the wire tube evaporator which is widely used at present. The tubular evaporator has large evaporation area, high evaporation efficiency, low manufacturing cost and simple manufacturing process, so it has been vigorously promoted and used. [0004] The assembly and welding (flame welding)...

AI Technical Summary

Problems solved by technology

In order to ensure the evaporation effect of the wire tube evaporator, the inner wall of the coil needs to be degreased and descaled. Since the coil of the evaporator is thin and bent in many places, it is difficult to use it. "(Publication No. CN 101036977 A) discloses the mechanical degreasing and descaling treatment method. Now the method of removing the residue on the inner wall of the coil is to directly use high-pressure gas to blow the pipe. Due to the blowing time and blowing pressure of the employees during the operation Without control, the blowing effect cannot be guaranteed, and the residue inside the pipeline is difficult to remove