Pressure plugging is a common installation method used to ensure the tightness and stability of piping systems. It can be used in many fields, including construction, engineering, petrochemical and so on. The following details several common pressure sealing installation methods, as well as their working principles and application scenarios.

1. Pipe plug method:

Pipe plug method is one of the commonly used sealing methods with pressure. It uses a plug device to completely close the opening of the pipeline to prevent the leakage of the body or gas. The plug device is made of metal, rubber or composite material, and has good pressure resistance and sealing performance. When the pipe plug method is used for installation, the plug device must first be placed at the end of the pipe and fixed by bolts or welding. Then, by increasing the internal pressure, the tight contact between the plug device and the pipe wall is ensured to achieve effective plugging.

2. Sealing belt method:

Sealing tape method is a simple and low cost sealing method with pressure. It uses special sealing tape material adhesive, polyurethane or polytetrafluoroethylene, etc., to seal up the pipe interface. The sealing tape usually has good elasticity and corrosion resistance to maintain the sealing effect in high pressure environments. When using the sealing tape method for installation, it is first necessary to wrap the sealing tape around the pipe interface and cover a wide enough range. Then, through appropriate pressure or heat treatment, a close connection between the sealing belt and the pipe interface is generated to achieve effective sealing.

3. Pressure test method:

Pressure testing method is a common method of sealing with pressure, which can be used to test the tightness of pipeline system. It applies high pressure in the pipeline system and observes whether the pressure can remain stable to determine whether there is leakage or gas leakage in the pipeline. When installing using the pressure test method, it is first necessary to close all valves of the piping system and connect the pressure gauge to the piping system. Then, the internal pressure is gradually increased until the predetermined test pressure is reached. During the test, it is necessary to carefully observe the reading of the pressure gauge and check the piping system for any abnormal conditions. If the pressure can remain stable and there is no leakage, the piping system has good sealing.

4. Coating method:

The adhesive coating method is a common sealing method with pressure, which is suitable for the sealing of pipe joints. It uses special adhesives, such as silicone rubber, polyurethane or epoxy resin, to coat the pipe interface to stop the leakage of fluid or gas. When using the coating method for installation, the surface of the pipe interface needs to be cleaned first to ensure that it is clean and pollution-free. Then, the adhesive is evenly coated on the pipe interface and pressurized to make a tight fit between it and the pipe wall. Finally, after the adhesive has dried and cured, the necessary tests are carried out to ensure the sealing effect.

To sum up, the installation methods with pressure plugging include pipe plug method, sealing belt method, pressure test method and coating glue method. Each method has its own applicable scenarios and characteristics, and the choice of the appropriate method depends on the specific application requirements and installation conditions. Regardless of the method used, it is necessary to ensure that the installation process is carried out in strict accordance with specifications and that the necessary tests and inspections are carried out to ensure the tightness and stability of the piping system.

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