Drainage method of refrigeration pipe during cold storage installation

Drainage method of refrigeration pipe during cold storage installation

Before the cold storage is installed, the refrigeration pipe must be thoroughly removed. The rust and dirt on the inner and outer walls of the pipe must be removed, and the inner wall must be kept dry. After the outer wall of the pipe is decontaminated and derusted, it must be immediately brushed to prevent rust. paint. There are many decontamination methods for pipelines, and we mainly recommend the following.

1. Before the cold storage is installed, manually decontaminate, use a steel wire brush to reciprocate the inside of the pipe until the dirt and rust in the pipe are removed, then wipe it dry with a clean white cloth, and then use dry compressed air Blow to the mouth of the pipe until the sprayed air is free of dirt on the white paper. Finally, proper moisture-proof measures must be taken, and the pipes must be sealed and put into use when the cold storage is installed. However, this method is labor intensive, low in efficiency, and poor in cleaning quality.

2. Dip washing and decontamination method: For small diameter pipes, elbows or elbows used in cold storage installations, a clean white cloth can be soaked with carbon tetrachloride, and the inner wall of the pipe can be wiped clean. For large diameter pipes, it can be filled Enter the carbon tetrachloride solution for decontamination. After 15-20 minutes, let go of one end of the pipe and pour out the carbon tetrachloride solution. Then use the above method to wipe the pipe clean and blow dry. It is sealed for future use.

3. The refrigeration pipe installed in the cold storage adopts sandblasting and decontamination method: using compressed air of 0.4~0.6MPa, sand with a particle size of 0.5~2.0mm is sprayed onto the rusty metal surface, and the metal surface is hit by the sand The dirt is removed, revealing the metallic texture and gloss. The metal surface decontaminated by this method will become rough and uniform, so that the paint can be well combined with the metal surface, and the rust on the recesses on the metal surface can be cleaned. It is a commonly used one in processing plants or prefabrication plants. Kind of decontamination method.

　　There are mainly the above-mentioned cleaning methods for the refrigeration pipes installed in the cold storage. The construction personnel can choose the decontamination method according to the site conditions to avoid the condition of the refrigeration pipes during the installation of the cold storage.