Pressure plugging is an operational process used for pipe system maintenance and domestic emergency situations. It is able to create pressure on the pipe to stop fluid leakage, while maintaining the stability of the system by plugging and sealing the pipe. The following is a detailed introduction to the operation process of sealing with pressure, including operating steps, precautions and common application scenarios.

1. Operation steps for sealing with pressure:

1. Preparation:

- Safety inspection: Ensure the working area and check the stability of related equipment and tools.

- Material preparation: Prepare plugging materials, such as plugging balls, sealants, fillers, etc.

2. Pipeline preparation:

- Close the valve: Close the valve connected to the section to be blocked as required to ensure that the sealing operation area is isolated from other pipelines.

- Drain the pipe: remove the pressure in the pipe to ensure stable operation.

Clean the pipe: Use appropriate tools and methods to clean the inside of the pipe to ensure that the sealing material is effectively attached and sealed.

3. Plugging operation:

- Installation of plugging device: according to the size and shape of the pipeline, select the appropriate plugging device, such as plugging ball or plugging core.

- Aeration or liquid filling: The plugging device is inserted into the pipe and filled with gas or liquid filling method to produce an effective plugging effect.

- Pressure monitoring: During the plugging process, the pressure in the pipeline is continuously monitored to ensure that the plugging device can withstand the pressure in the pipeline.

4. Sealing effect verification:

- Pressure testing: After plugging is completed, pressure testing is performed to ensure the tightness and stability of the pipeline system.

- Check for leaks: Use relevant tools and methods to check whether there is leakage in the blocked area.

- Remove plugging: If the plugging effect is good, the plugging device can be removed and the normal operation of the pipeline system can be resumed.

2. Precautions for sealing operation with pressure:

1. Safety 1: Before the operation of sealing with pressure, a comprehensive safety inspection must be carried out, and the necessary stability measures must be taken to ensure the stability of the staff and equipment.

2. Select the right materials and devices: according to the material, size and working environment of the pipeline and other factors, select the right plugging materials and devices to ensure the sealing effect and feasibility of operation.

3. Correct operation: During the plugging operation, follow the operation steps, pay attention to the installation of the plugging device and the process of filling the gas or liquid to ensure correct and stable operation.

4. Monitoring and testing: During the plugging process, it is necessary to continuously monitor the pressure in the pipeline and carry out corresponding tests to ensure the sealing effect and system stability.

5. Periodic maintenance: After the operation of sealing with pressure, the pipeline system should be regularly maintained and inspected to ensure the normal operation of the sealing device and the stability of the system.

Third, common application scenarios:

1. Pipeline maintenance: When the pipeline leaks or is damaged, you can use pressure sealing operation to temporarily repair the pipeline to ensure the normal operation of the system.

2. Construction site: In construction sites or other construction sites, it may be necessary to temporarily close a section of pipeline in order to complete other work. The pressure closure operation can isolate the area from other pipelines to ensure stable construction.

3. Emergencies: In emergencies such as natural disasters and accidents, some pipelines may need to be blocked to prevent harmful substances from leaking or spreading.

4. Hydraulic engineering: In hydraulic engineering, pressure plugging operations are often used to temporarily close or control water flow for maintenance, repair or installation of other equipment.

Summary: Pressure plugging operation is an important process for pipeline maintenance and emergency treatment. Correct operation procedures, precautions, and application scenarios can ensure the smooth operation of sealing with pressure and ensure the stability of the pipeline system.

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