how do manhole flanges protect against corrosion
Mar 18, 2024| How do manhole flanges protect against corrosion
The manhole is a safety emergency ventilation device installed on the top of the storage tank, which is usually used with fireproof and mechanical breathing valves to avoid accidents
The reason is that when the tank is sharply overpressure or vacuum, the storage tank is damaged and the accident occurs, and it plays a safe fire resistance role, which is to protect the safety of the storage tank
The device is especially suitable for the vaulted atmospheric tank with nitrogen capping for storage materials. With constant pressure discharge, constant pressure suction, flexible opening and closing, safety resistance
Fire, compact structure, good sealing performance, safety and reliability.
The design of the manhole is mainly to facilitate the staff to enter and exit the tank for work and maintenance of an equipment. To meet the use of pressure requirements and sealing
Performance: Weld the upper and lower two flanges at the manhole barrel section and the cover link, and tighten the upper and lower bolts. There are many workers in chemical production
The art needs to add materials at the manhole, because the manhole cover is often opened, the acidic material is easy to flow, and eventually corrosion the flange, so that the kettle cover is scrapped
. This can cause a lot of property damage. Even if properly repaired, acidic material flow will still corrode the flange. To completely solve the manhole cover frequency
Many open the problem of corrosion flange, we repair the damaged flange, and install a plastic flange (the choice of plastic material should consider the reaction
The medium in the kettle is corroded), the plastic lower flange is the same size as the manhole flange, the diameter of the inner hole of the flange is determined according to the need, and a plastic is added to the flange
Material seal cover. The plastic flange is connected with the manhole cover and mat, and the plastic cover is opened when adding the material, and the cover is covered after adding, so that the material can be avoided
Corrode the manhole flange. This is equal to adding a protective cover to the flange to avoid the corrosion of the material to the manhole flange, which has played a great role
The role of.