Pressure plugging is a technique commonly used in pipeline maintenance, modification and emergency management. It means that a special polymer material is injected under pressure inside the pipeline, and it is quickly solidified through high temperature and high pressure, so as to achieve the sealing, strengthening and reconstruction of the pipeline.

The advantage of pressure sealing technology is that it can quickly and effectively solve the problems of pipeline accidents and leaks, and avoid the drawbacks of traditional pipeline repair methods that need to excavate or disassemble pipelines for maintenance, thus greatly reducing the maintenance cost and construction period.

The following is the use of pressure plugging technology tips:

Scope of application

The pressure sealing technology is suitable for the maintenance and transformation of various pipelines, including but not limited to: petroleum, natural gas, chemical, water treatment, water supply and drainage, HVAC, communication and other pipelines. At the same time, the technology can also be used in the reinforcement of new pipelines and water blocking treatment.

Second, material selection

The polymer materials used in pressure sealing technology need to have the following characteristics: rapid solidification at high temperature and pressure, high adhesion and compressive strength, corrosion resistance, and no harmful substances. Commonly used polymer materials include polyurethane, epoxy resin, acrylic ester and other materials.

Third, construction steps

The construction steps of pressure sealing technology generally include the following links:

1. Clean the pipe

Before construction, it is necessary to clean and remove rust on the pipeline to ensure the adhesion and solidification effect of the polymer material.

2. Positioning and preparation

Determine the leak point of the pipeline or the part that needs to be repaired by means of detection and flaw detection, and accurately locate and prepare it.

3. Pressurize the material

The polymer material is injected into the pipe by pressurizing it so that it completely fills the part that needs to be blocked. It should be noted that the injection pressure and time need to be adjusted according to the specific situation to ensure the solidification effect and compressive strength of the polymer material.

4. Wait for the material to set

After injecting the polymer material, it is necessary to wait a certain amount of time to ensure that it is fully solidified and fixed. During this period, it is necessary to maintain the high-pressure state inside the pipeline to avoid the displacement or failure of the polymer material due to external forces.

5. Test and acceptance

After waiting for the polymer material to solidify, it is necessary to conduct testing and acceptance to ensure the stability and reliability of the pipeline. The test contents include pressure test in pipeline, leakage detection, compressive strength test and other indicators.

Four, stability precautions

When using pressure sealing technology for pipeline maintenance, the following stability matters need to be paid attention to:

1. Before construction, it is necessary to detect and exhaust the inside of the pipeline to avoid accidents.

2. Wear protective equipment during construction to avoid damage to the body caused by polymer materials.

3. When injecting polymer materials, it is necessary to pay attention to the temperature and pressure of the material to avoid accidents.

4. In the construction process, it is necessary to strictly abide by the relevant norms and operating procedures to ensure the stability of construction.

Fifth, expand the application

In addition to its use in pipeline maintenance and renovation, pressure sealing technology can also be applied to other fields, such as the reinforcement and water treatment of tunnels, basements, DAMS, reservoirs and other projects. At the same time, the technology can also be used in the development and manufacture of new building materials, providing more innovative solutions for the construction industry.

In short, the pressure sealing technology is a fast, effective and efficient pipeline maintenance and reconstruction technology, which has a wide application prospect and market value. We need to fully tap its potential and promote its wide application in all walks of life on the basis of continuous optimization of technology and improvement of management.