Pressure plugging is a common retrofit design technique used in the repair and improvement of piping systems. It is often used to solve problems such as pipe leakage, leakage, aging or damage to extend the service life of the pipe and improve the reliability of the system.

The retrofit design with pressure closure first requires an inspection and evaluation of the piping system. This includes a thorough understanding of the structure, material, size and pressure of the pipe. Problems and damage can be determined by using non-destructive inspection techniques such as ultrasonic, X-ray or magnetic particle inspection.

According to the inspection results, the specific renovation design scheme can be determined. This may include repairing or replacing damaged pipe sections, installing new sealing materials or sealers, reinforcing pipe structures, and adding pipe connections.

The following key factors need to be considered in the design of sealing transformation with pressure: 1. Material selection: According to the type of pipeline system and the environment, select the appropriate material for transformation. These materials should have the characteristics of pressure resistance, corrosion resistance and high temperature resistance to ensure that the modified pipeline has good performance and reliability.

2. Selection of plugging agent: According to the location and degree of plugging, select the appropriate plugging agent to fill. These sealers should have good sealing performance and durability to prevent re-leakage.

3. Construction method: Construction and tools are needed to ensure a stable and effective transformation process. This includes the use of advanced plugging equipment and tools, as well as following correct operating procedures and stability specifications.

4. Monitoring and testing: After the transformation is completed, it is necessary to carry out systematic monitoring and testing to ensure that the transformation effect meets the design requirements. This can be achieved by using methods such as pressure testing, tightness testing, and leak detection.

Retrofit design with pressure closure is a complex and critical engineering task that requires sufficient advanced knowledge and experience. Through careful planning, reasonable design and effective construction, the long-term stable operation of the pipeline system can be ensured, and its reliability and advancement can be improved. Therefore, in the design of retrofitting with pressure, it is recommended to seek the help of advanced engineers and technicians to ensure the quality of design and construction.

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