In modern engineering construction, as an efficient construction method, pressure sealing construction has gradually attracted extensive attention in the industry. Compared with the traditional construction method, the sealing construction with pressure has many advantages, such as saving time, reducing cost, and reducing the impact on the surrounding environment. Therefore, this paper will discuss in detail the principle, process, equipment selection, technical points, application fields and so on, in order to provide readers with a comprehensive understanding.

#### The basic principle of sealing construction with pressure

Pressure sealing construction refers to the pipeline or equipment under continuous pressure, through special plugging technology and equipment, to deal with the leak or repair the pipeline. The basic principle is to create a local sealing environment by installing a blocking device in the pipeline system, so as to ensure the normal flow of the medium in the pipeline and avoid the loss caused by large-scale shutdown.

The key to this construction method is that it can quickly and effectively complete the maintenance and sealing work without stopping the system operation, ensuring the continuity of production.

#### II. Process of sealing construction with pressure

The process of sealing with pressure usually includes the following steps:

** Site investigation ** : Before construction, technical personnel need to conduct a detailed investigation of the construction site to understand the material, pressure, fluid characteristics and other information of the pipeline to provide a basis for the subsequent construction plan.

2. ** Formulate construction plan ** : According to the actual situation of the site, formulate specific construction plan, including sealing method, equipment selection, personnel arrangement, construction period, etc.

3. ** Equipment preparation ** : Prepare the required plugging equipment and tools to ensure that they meet the construction requirements, and carry out necessary testing and debugging.

4. ** Preparation before construction ** : Before construction, do a good job of on-site protective measures, remind the surrounding staff to pay attention to stability, to ensure personal safety during the construction process.

5. ** Implementation of plugging ** : According to the formulated plan, the plugging construction is carried out, including the installation of the plugging device, debugging equipment, and testing the sealing effect.

6. ** Later inspection ** : After the construction is completed, on-site inspection is carried out to ensure good sealing effect and normal operation of the system.

7. ** Record and summarize ** : Record the construction process and summarize the experience and lessons to provide reference for future construction.

#### Three, with pressure sealing construction required equipment

The equipment used in the construction of sealing with pressure mainly includes the following:

1. ** Sealer ** : This is the core equipment with pressure sealing construction, usually divided into mechanical sealer and pneumatic sealer. Mechanical occluders seal by mechanical structure, while pneumatic occluders use gas pressure to seal.

2. ** High pressure pump ** : used to provide the required pressure to ensure the normal operation of the plug.

3. ** Pressure monitor ** : Used for real-time monitoring of pressure changes in the pipeline to ensure the stability of the construction process.

4. ** Stability protective equipment ** : including stability cap, protective clothing, intercom, etc., to ensure the stability of construction personnel in the construction process.

#### Technical points

Although the process of sealing with pressure is simple, the following technical points should be paid attention to in the implementation process:

1. ** Selection of pipeline materials ** : Different materials of pipelines have different requirements for sealing. Before construction, it is necessary to clarify the material of the pipeline to select the appropriate stopper and construction method.

2. ** Pressure control ** : During the construction process, the pressure must be strictly controlled to avoid sealing failure or equipment damage due to high pressure.

3. Detection of sealing effect ** : After the construction is completed, the sealing effect must be tested to ensure that there is no leakage.

4. ** Emergency plan ** : Develop a detailed emergency plan to deal with possible emergencies.

#### 5. Application fields of sealing construction with pressure

Pressure plugging construction is widely used in the following fields:

1. ** Oil and gas industry ** : In the case of pipeline leakage, valve replacement, etc., pressure sealing can quickly solve the problem and avoid resource waste.

2. ** Chemical industry ** : In chemical production, sealing with pressure can effectively prevent the leakage of harmful gases, protect the environment and worker safety.

3. ** Water supply and drainage system ** : In the urban water supply and drainage system, the construction with pressure closure can quickly repair the pipeline to ensure the normal supply of water resources.

4. ** Power industry ** : In the maintenance of power equipment, pressure plugging can reduce downtime and improve the operating efficiency of equipment.

####. Summary

As a modern construction method, sealing with pressure has gradually become an important means of repair and maintenance in various industries because of its simple and efficient characteristics. Through reasonable construction process, advanced equipment and strict technical support, pressure sealing construction can effectively solve various pipeline problems, but also under the premise of protection, reduce production losses and create more value for enterprises. I hope this article can help you to understand the construction of sealing with pressure and promote its application and development in a wider field.