We all know PPH winding tank The stored substances are generally some hazardous chemicals, so the production of PPH winding cans should be subject to quality assurance. For the sake of safety, PPH winding tank manufacturers usually use PPH winding tank for maintenance and inspection.
The appearance of PPH winding tank shall be checked before use, and the surface shall be free of cracks, shrinkage cavities, slag inclusion, folding, peeling and other defects. The depth of corrosion and indentation damage shall not exceed the negative wall thickness deviation allowed by the corresponding product standard.
The test pressure of valve shell of PPH winding tank shall be less than 1.5 times of the nominal pressure, the test time shall be within 5 minutes, and the shell filler shall not leak; The sealing test pressure shall be lower than the nominal pressure, and the sealing surface of the valve shall not leak.
For the pipeline gate valve of mechanical equipment conveying dangerous goods and flammable liquids, the design method is that the working pressure is greater than 1MPa, and the design method is that the temperature of the pipeline gate valve shell is less than - 29 ℃. The working pressure test and sealing test are conducted respectively at ℃ or greater than 186 ℃.
Therefore, PPH mixing tank The manufacturer shall not only pay special attention to design and production, but also pay more attention to the protection and inspection of the equipment regularly in the daily use process, and solve the problems found in a timely manner.
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