Pressure plugging is a plugging technology commonly used in pipelines, containers, equipment and other industrial fields, which can generate high pressure in the area that needs to be plugged, and maintain a stable plugging effect. In the following article, I will introduce the working principle, application field, operation steps and precautions in detail to help readers better understand and use this technology.

First, the working principle

Pressure plugging is the use of special plugging tools to generate high pressure in the pipeline or equipment to achieve the purpose of plugging. The plug tool usually consists of two parts: an expandable plug bag and a pipe connecting the plug bag to the pump station. Before starting the plug, place the plug bag in the area that needs to be plugged and ensure that it is in close contact with the pipe or equipment surface.

After the plug bag is connected to the pipeline of the pump station, the medium is injected into the plug bag through the pressure provided by the pump station. As the medium is injected, the sealing bag will gradually expand, filling the space of the pipe or equipment, and creating high pressure. This high pressure can effectively block the flow of media in pipes or equipment, ensuring that no leakage or spill occurs.

2. Application field

Sealing with pressure is widely used in various industries, especially in petrochemical, electric power, aerospace and other fields. Here are some common application scenarios:

1. Pipeline maintenance: When the pipeline leaks or needs to be repaired, the pressure sealing can temporarily block the pipeline, prevent the medium from leaking, and provide a stable working environment for the maintenance personnel.

2. Equipment maintenance: During equipment maintenance, such as pressure vessels, heat exchangers, etc., with pressure sealing can temporarily close the equipment to avoid media flow and ensure the smooth maintenance work.

3. Process replacement: In industrial production, it is necessary to change the process frequently, and pressure plugging can help switch the process, prevent different media from mixing, and ensure the stability and quality of production.

3. Operation steps

The procedures for sealing with pressure are as follows:

1. Preparation: Before starting the operation, it is necessary to fully prepare the blocked area, clean the impurities and dirt on the surface of the pipe or equipment, and ensure that the sealing bag is tightly fitted to the surface.

2. Install the plugging tool: Place the plugging bag in the area that needs to be plugged, and use the fixing tool to firmly fix it on the surface of the pipeline or equipment.

3. Connect the pump station: Connect the pipeline of the pump station with the sealing bag to ensure that the connection is firm and there is no leakage.

4. Booster plugging: Start the pumping station, gradually increase the injection pressure of the medium, so that the sealing bag gradually expands, and generates enough pressure to block the pipeline or equipment.

5. Check the sealing effect: After the sealing pressure reaches the set value, check whether there is leakage in the sealing area and ensure that the sealing effect is good.

4. Precautions

When using pressure plugging technology, the following points need to be noted:

1 Stability protection: Operators should wear appropriate protective equipment, including gloves, goggles and protective clothing, to prevent accidental injury.

2. Sealing bag selection: Select the appropriate sealing bag type and material according to the actual needs to ensure that it can withstand the required pressure and medium characteristics.

3. Pump station selection: According to the size of the blocked area and the required pressure, select the appropriate pump station to provide the required pressure.

4. Inspection and maintenance: Check the status of the plugging tool regularly, and replace the aging or damaged parts in time to ensure their normal operation.

5. Environmental protection: During the operation, attention should be paid to the treatment and disposal of the media to avoid pollution to the environment.

In SUMMARY:

Pressure plugging is a plugging technology widely used in the industrial field, through the use of special plugging tools to generate high pressure in the pipeline or equipment to achieve the purpose of plugging. It has important application value in pipeline maintenance, equipment maintenance and process replacement. In the operation, it is necessary to pay attention to stability protection, sealing bag selection, pump station selection, inspection and maintenance, and environmental protection. Through the correct use of pressure sealing technology, industrial production can be ensured to be stable and efficient.