Method for cleaning internal surface of copper coil

An inner surface, copper coil technology, applied in cleaning methods and utensils, chemical instruments and methods, cleaning hollow objects, etc., to achieve the effects of convenient acquisition, low cost, and safe use

Active Publication Date: 2014-04-09
NINGBO JINTIAN COPPER TUBE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology uses compressed gas (CNG) as its cleaning energy supply that costs less than traditional methods like liquid ammonia or urea-based chemicals while still being effective at removing impurities from materials such as steel wire rods.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving the quality control standards imposed upon manufacturing processes involving high purification levels of refrigrated fridge liquids like Freons® Refrigerators without compromising their effectiveness due to excessive amounts of foreign substances remaining inside them'retrieval tubular metal pipe.

Method used

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  • Method for cleaning internal surface of copper coil
  • Method for cleaning internal surface of copper coil
  • Method for cleaning internal surface of copper coil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Coil such as figure 1 and figure 2 shown.

[0033] For coils with an outer diameter of 7.94mm, a wall thickness of 0.28mm, a coil weight of 150kg, a length of 2500m, and a cleanliness requirement of less than 10 mg / m2,

[0034] Step a, inject 100-200ml of cleaning agent 4 from the inlet end 1 of the coil, and then insert 3-5 sponge balls 3, the diameter of which is 0.3-0.5mm larger than the inner diameter of the coil;

[0035] Step b, inject 300-400ml of cleaning agent 4 into the same inlet port 1 of the coil, and then plug 3-5 sponge balls 3, the diameter of which is 0.3-0.5mm larger than the inner diameter of the coil;

[0036] Step c, blowing compressed purified air into the inlet port that has been processed in step b above, with a pressure of 3-6Mpa and a flow rate of 10-11M 3 / min, push the sponge ball to clean the inner surface of the copper pipe until all the sponge ball is blown out from the outlet end 2 of the coil;

[0037] Step d, the color of the last ...

Embodiment 2

[0042] First, clean the coil with an outer diameter of 6.35mm, a wall thickness of 0.7mm, a coil weight of 500kg, a length of 4375m, and a cleanliness requirement of less than 10mg / m2. The steps are as follows:

[0043] Step a, first inject 100-200ml of cleaning agent 4 into the inlet end 1 of the coil, and then insert 3-5 sponge balls 3, the diameter of which is 0.3-0.5mm larger than the inner diameter of the coil;

[0044] Step b, inject 800-1000ml of cleaning agent 4 into the same inlet port 1 of the coil, and then add 3-5 sponge balls 3, the diameter of which is 0.3-0.5mm larger than the inner diameter of the coil;

[0045] Step c, blowing compressed purified air into the inlet port that has been processed in step b above, the air pressure is 3-6Mpa, and the flow rate is 10-11M 3 / min, push the sponge ball to clean the inner surface of the copper pipe until all the sponge ball is blown out from the outlet end 2 of the coil;

[0046] Step d, the color of the last sponge ba...

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Abstract

A method for cleaning internal surface of a copper coil includes the following steps of pouring appropriate cleaning agents into an entry end of the copper coil, then stuffing three to five cleaning balls into the entry end, pouring cleaning agent into the same entry end, then stuffing three to five cleaning balls, and then blowing in compressed purified air under a pressure ranging from 3 to 6 Mpa and an air flow of 10 to 11 M3/min until the cleaning balls are blown off from the exit end of the copper coil. According to the color of the last cleaning ball, whether the internal surface of the copper coil is cleaned up can be judged. If the last cleaning ball keeps the original color, the internal surface of the copper coil is cleaned up. Then nitrogen can be pumped into the copper coil and an annealing treatment in an annealing stove can be operated; after then a turbidity test can be operated through sampling from the copper coil. According to this method, the compressed purified air is used as the cleaning power source. The compressed purified air is low in cost, convenient to obtain and safe to use. The cleaning cost can be decreased by 50 percent, the pollution to environment can be reduced, and the compressed purified air can also be used as power source for other materials of coils.

Description

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Claims

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Application Information

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Owner NINGBO JINTIAN COPPER TUBE
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