Pressure plugging is a common piping installation method used to perform repair, testing, or maintenance work in a piping system. It is to plug the pipeline by inserting a pressure stopper into the pipeline and then increasing the internal pressure to achieve the purpose of plugging the pipeline. The following details the principle, method and precautions of writing tape pressure plugging.

First, the principle of pressure sealing

Pressure plugging is the use of special structures and materials with pressure plugging device, by increasing the internal pressure, so that it forms a seal inside the pipeline, so as to block the pipeline. Pressure sealers are usually made of compressible rubber or rubber-like materials, with better sealing performance and pressure resistance.

2. Method of sealing with pressure

1. Preparation: Before plugging with pressure, you first need to prepare. Including understanding the size of the pipeline, pressure, media and other relevant information, select the appropriate pressure sealer and supporting tools.

2. Clean the pipe: Before sealing with pressure, ensure that the inside of the pipe is clean and free of impurities. This can be done by cleaning pipes or using advanced tools.

3. Install a pressure sealer: Select the appropriate size of the pressure sealer according to the size of the pipeline, and use advanced tools to insert it into the pipeline. Make sure that the pressure sealer can completely cover the blocked part of the pipeline.

4. Increase the internal pressure: Use the commonly used pressure device to inject the appropriate pressure into the pressure sealer. The size of the pressure should be determined according to the pressure of the pipeline and the requirements of the plug.

5. Check the tightness: After increasing the internal pressure, it is necessary to conduct a tightness check. Tools such as pressure gauges and leak detectors can be used to check the seal performance with a pressure plug.

6. Complete the plugging work: If the sealing performance is good, you can complete the plugging work. If the sealing performance is not good, you need to readjust the pressure or replace the expansion tape pressure sealer until the requirements are met.

Third, with pressure sealing precautions

1. Before performing pressure plugging, it is necessary to ensure that the working area complies with the relevant operating specifications and measures to protect the stability of oneself and others.

2. Ensure the quality of materials: select high-quality pressure sealers and supporting tools to ensure that their materials and manufacturing processes meet relevant standards to ensure the sealing effect and lasting performance.

3. Understand the pipeline information: Before sealing with pressure, it is necessary to fully understand the size, pressure, medium and other information of the pipeline in order to choose the appropriate sealer and operation method.

4. Ensure cleanliness: Before sealing with pressure, it is necessary to ensure that the inside of the pipeline is clean and free of impurities, so as not to affect the sealing effect.

5. Appropriate increase of internal pressure: When performing pressure sealing, it is necessary to increase the internal pressure appropriately, but it cannot exceed the bearing range of the sealer to avoid damage or leakage.

6. Regular inspection and maintenance: For long-term blocked pipelines, regular inspection and maintenance are required to ensure the sealing performance of the sealer.

Summary: Sealing with pressure is a common method of pipeline installation. By using a suitable expansion sealing device with pressure, the internal pressure is increased to form a seal inside the pipeline, and the purpose of sealing the pipeline is achieved. When performing a pressure plug, you must prepare, clean the pipe, install the plug, increase the internal pressure, check the tightness, and complete the plug. At the same time, choose high-quality materials, understand the pipeline information, keep clean, appropriately increase the internal pressure, and regularly check and maintain the plug.