Pressure plugging is a technique used to seal and isolate fluids in piping systems, often for pipe maintenance, repair, and testing. The application principle of sealing with pressure involves many fields such as fluid mechanics, material science and engineering technology, and I will introduce the application principle of sealing with pressure in detail below.

Principle and application of sealing with pressure

Pressure plugging is a technique for sealing and isolating the fluid inside the pipeline by applying an external force in the pipeline system to make the plugging element (such as the plugging ball or the plugging device) expand sufficiently. This technology is widely used in petroleum, chemical, water conservancy, construction and other fields, for pipeline maintenance, testing, transformation and new construction projects.

In the process of sealing with pressure, it is first necessary to select the appropriate sealer parts, which are usually made of elastic materials and are able to expand and fill the space inside the pipe when subjected to external pressure. Sealer parts usually have good pressure resistance and sealing performance, can withstand the fluid pressure inside the pipeline, and effectively isolate the fluid in the pipeline.

Next is the installation and expansion process of the occluder piece. When installing the occluder piece, it needs to be placed in the target position inside the pipe and external pressure is applied through the pressure control device of the pipe system. When the external pressure acts on the sealer, the elastic material inside the sealer will gradually expand, fill the space inside the pipeline, and form a good sealing contact with the pipeline wall, so as to achieve the closure and isolation of the fluid inside the pipeline.

After the expansion of the sealer, the piping system can be repaired, inspected or other necessary operations. Once the work is completed, the external pressure can be reduced, the occluder piece can be restored to its original state, and then it is removed to complete the process of sealing with pressure.

The principle of sealing with pressure involves the knowledge of many fields such as fluid mechanics, materials science and engineering technology. When selecting a sealer part, it is necessary to consider factors such as its pressure resistance, elastic properties of the material and sealing properties. During the construction process, the external pressure needs to be controlled to ensure that the sealer can expand steadily and can effectively isolate the fluid inside the pipe. Therefore, the application principle of pressure sealing involves the in-depth understanding and comprehensive application of convection physics, material science and construction technology.

Sum up

Pressure plugging is an important pipeline technology, which can effectively seal and isolate the fluid inside the pipeline. Its principle involves the knowledge of many fields such as fluid mechanics, materials science and engineering technology. By selecting the proper sealer and controlling the external pressure, the maintenance, inspection and transformation of the pipeline system can be realized to ensure the stable operation of the pipeline system. The application of pressure sealing technology will be more widely and deeply developed and applied in the future.