Tips for Mechanical Tightness Inspection of Spiral Duct Machines

Under normal circumstances, after the installation of the spiral air duct system, it is necessary to do a tightness inspection. On the one hand, it is to inspect the air duct and the seam of the prefabricated parts, and on the other hand, it is also to inspect the rivet holes and flange turning. The tightness of the connection between edges and ducts and fittings, ducts and components. So, do you know how to test the tightness of the air duct produced by the spiral duct making machine?

The duct system inspection can take the following three methods:

Ⅰ. The air duct light leakage detection method produced by the spiral duct making machine, also known as the qualitative detection method:

The test method of light leakage detection is to use a light bulb with a voltage not higher than 36v and a power of more than 100w with a protective cover in the air duct on a certain length of air duct in a dark surrounding environment, and slowly move from one end of the air duct. To the other end, observe the light leakage on the outside of the air duct at the same time.

If light leakage is observed on the appearance of the air duct, it means that there is air leakage, and the air leakage of the air duct should be repaired. For air leaks, sealants can be applied or other sealing measures can be applied at the bite seams, rivet holes, and flanging corners of the air duct; if air leaks at the flange joints, tighten the nuts or replace the flange gaskets according to the actual situation. piece.

Note that light leakage detection needs to be carried out on the premise that the processing technology of the air duct system is guaranteed.

Ⅱ. The air leakage test method of the air duct produced by the spiral air duct machine:

1. After passing the light leakage test, the air ducts of the medium-voltage system should be randomly checked for the air leakage of the system, and all the air ducts of the high-voltage system should be tested for air leakage. The measured air leakage value of the system should meet the design and specification requirements.

2. The air leakage test should use special measuring instruments, such as air leakage tester.

Ⅲ. Spiral air duct mechanical leakage, oil leakage detection method:

This is the most simple and rude inspection method. After the air duct is formed, a random inspection method is carried out. The extracted pipes are horizontally irrigated and filled with oil products. Pay attention to the pipeline infiltration within 2-4 hours. Of course, you need to pay attention to that oil-based products are correspondingly corrosive. Therefore, it is generally not recommended.

BLKMA company specializes in manufacturing and selling automobile air duct production lines, rectangular duct forming machines, spiral air duct forming machines, round air duct forming machines, etc. We are one of the leading manufacturers of duct forming machines since 1994. If necessary, welcome to consult.

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