Pressure plugging is a technical method often used for maintenance or construction in pipelines or equipment. However, despite the many advantages of pressure plugging, there are still cases of failure in practical applications. This article will introduce the reasons for the failure of the pressure plug in detail, and provide solutions for timely maintenance.

The reasons for the failure of sealing with pressure can be attributed to the following aspects:

1. Plugging material failure: The quality of the plugging material may lead to plugging failure. For example, if the sealing rubber ring is cracked or worn, or the sealing bolt is loose, the sealing may fail.

Solution: Timely replacement of sealing materials, and ensure the selection of high-quality sealing products. Check the status of the sealing material regularly and replace it in time if any problem is found.

2. Improper plugging operation: Plugging with pressure is a technical work, which requires operators to have certain experience and skills. Improper operations, such as improperly tightened or loosened plugging bolts, or incorrect plugging positions, may cause plugging failure.

Solution: Ensure that operators have sufficient experience and skills to carry out the necessary training and guidance. Before plugging, carefully check the status of the equipment and plugging materials to ensure the accuracy of the operation.

3. Abnormal pipeline pressure: The pipeline pressure exceeds the carrying capacity of the sealing material, or the pressure suddenly rises, which will lead to the sealing failure.

Solution: Check the pressure of the pipeline regularly, and adjust the selection and use of sealing materials according to the pressure change. If the pipe pressure is abnormal, the work should be interrupted immediately, troubleshooting and repair the pipe.

4. Aging or damage of pipeline materials: After long-term use, pipeline materials may be aging or damaged, such as corrosion, cracks, etc., resulting in plugging failure.

Solution: Check the status of pipeline materials regularly and replace them in time when problems are found. Before using the sealing material, the condition of the pipe material should be carefully checked to ensure that it is intact.

The solution to the failure of plugging with pressure is as follows:

1. Timely maintenance: Once the plugging failure is found, the work should be interrupted immediately and the gas or liquid supply should be stopped to ensure the staff. Then, check the blocking position to find out the cause of the fault. According to the specific situation, the corresponding repair or replacement.

2. Increase safety measures: Before the operation of sealing with pressure, adequate stable preparations should be made. For example, check the status of plugging materials, tools, and equipment to ensure that they are functioning properly. At the same time, the necessary protective equipment is provided for the staff, and the operating procedures are strictly observed.

3. Regular inspection and maintenance: Check and maintain pipelines and sealing materials regularly to discover and solve potential faults in time. At the same time, according to the use and working conditions of the pipeline, develop a reasonable maintenance plan, and carry out regular inspection and maintenance of the pipeline.

4. Improve operator skills: train and guide operators to improve their skill level and operation ability. At the same time, establish a sound training system, and constantly update and improve the operation technology and knowledge.

In short, when the pressure plug fails, timely maintenance is the key. By strengthening measures, regular inspection and maintenance, and improving the skills of operators, you can reduce the risk of failure of plugging with pressure and ensure the stability and smooth operation.