How to avoid flange leakage?

Avoiding flange leakage is an important link to ensure the safe operation of industrial pipeline system. Here are some effective measures that can help you avoid flange leaks:

First, correct selection and installation

Select the sealing material according to the characteristics of the medium:

According to the nature of the intermediate material of the pipeline (such as temperature, pressure, corrosion), choose the appropriate sealing material, such as rubber, butadiene rubber, polytetrafluoroethylene, etc.

For high temperature and strong corrosive media, high temperature and corrosion resistant sealing materials should be selected.

Select the appropriate flange connection method:

Select the appropriate flange connection mode according to the working condition and medium, such as flange surface sealing, ring groove sealing, etc.

Make sure the choice of sealing material matches the connection method.

Ensure the geometry and surface finish of the flange connection:

Ensure that the flatness, perpendicularity and concentricity of the flange meet the requirements to avoid flange wear or deformation.

The surface of the flange is polished to improve its finish, which is conducive to sealing.

Reasonably determine the pre-tightening force and tightening sequence of the flange connection:

According to the type and specification of the flange connection, determine the reasonable pre-tightening force and tightening sequence.

Avoid excessive preloading force resulting in flange deformation, or too small preloading force resulting in a tight seal.

Second, regular inspection and maintenance

Regularly check the tightness of the flange connection:

Check the fastening bolts of the flange connection regularly to ensure that the fastening force is uniform and the bolts are not loose.

If found loose, should be tightened in time.

Replace the sealing material regularly:

The sealing material has a certain service life, and it is easy to age, deform or wear when used for too long.

Check the sealing material of the flange connection regularly and replace it as necessary.

Timely handling of leaks:

If the flange leaks, take timely measures, such as replacing the sealing material, adjusting the fastening force, or reprocessing the flange connection.

Avoid the leakage problem to expand, leading to more serious consequences.

Third, improve the use of conditions and strengthen training

Improve conditions of use:

Reduce the temperature and pressure of the piping system as much as possible to reduce the load on the flange and wear.

Reduce vibration and shock to the piping system and protect flanges from damage.

Strengthen safety awareness training:

Conduct necessary safety training for employees engaged in flange connection operations, so that they understand the impact of flange leakage on work safety and preventive measures.

Improve safety awareness and operation skills of employees to reduce flange leakage caused by improper operation.

Establish flange maintenance records:

Establish maintenance records for flanges, recording each inspection, cleaning, fastening and replacement.

Identify potential problems in time and take action to ensure long-term stable operation of flanges.

To sum up, through the correct selection and installation, regular inspection and maintenance, improve the use of conditions and strengthen training and other measures, can effectively avoid flange leakage, to ensure the safe operation of industrial pipeline system.