In the engineering field, sealing with pressure is a common process operation, used for the sealing and sealing of pipelines, containers and other systems. The reliability of sealing with pressure means that during construction and operation, the sealing equipment can effectively maintain the sealed state, prevent fluid leakage, and ensure the stability of the system. This paper will discuss the reliability of sealing with pressure, explore its principle, influencing factors and methods to improve reliability.

The principle of sealing with pressure is mainly to seal the pipeline or container through the sealing device (such as the plug, sealing belt, etc.), and then pressurize the system in the blocked state to detect whether the system is leaking or leaking. The sealing equipment is usually made of materials that are resistant to high pressure and corrosion, ensuring that there will be no breakage or leakage in high pressure environments. In the construction process, pressure sealing is usually used for pressure test of new pipelines or equipment to verify the sealing performance of equipment; During the maintenance process, it can also be used to temporarily block pipes or containers for maintenance work.

The reliability of plugging with pressure is affected by many factors, including the material and manufacturing process of the plugging tool, the matching of the plugging tool to the pipeline or container, and the construction quality of the plugging operation. First, the quality of the plug is critical to reliability, and if the plug has manufacturing defects or expires, it can easily lead to leakage accidents. Secondly, the matching between the sealing appliance and the pipeline or container is also an important factor in determining reliability. If the sealing appliance does not match the caliber of the pipeline or the installation is not in place, it may lead to a weak seal and cannot achieve the expected sealing effect. In addition, the quality of the construction operation also directly affects the reliability of the sealing with pressure, including the technical level of the operator and the standardization of the operation process.

In order to improve the reliability of sealing with pressure, it can be improved from the following aspects. First of all, the selection of high-quality sealing equipment to ensure that it has good pressure resistance, corrosion resistance, to avoid leakage accidents caused by quality problems. Secondly, the design and manufacture of the sealer need to follow standard specifications to ensure its match with the pipeline or container and improve the sealing performance. In addition, strengthen the training and technical guidance of operators, improve the level of operation and operation standardization, and reduce the impact of human error on reliability. Finally, regular inspection and maintenance of the plugging equipment, timely replacement of aging damaged appliances, to ensure the reliable operation of the equipment.

In general, the reliability of sealing with pressure is an important link to ensure the stable operation of engineering systems. The reliability of sealing with pressure can be effectively improved and the stability of the system can be ensured by selecting high quality sealing equipment, ensuring the matching between the equipment and the pipeline, strengthening the operation specification and regular maintenance. It is hoped that the discussion in this paper can deepen the reader's understanding of the reliability of sealing with pressure, and promote the research and practice of related technologies in engineering field.