With the rapid development of industrial technology, precision machining technology plays an increasingly important role in all walks of life. Especially in oil, gas, chemical and other fields, precision machining technology with pressure sealing has become one of the key technologies to deal with high-pressure environment operations with its advantages. This paper will deeply discuss the precision machining technology with pressure sealing, including its principle, application, advantages and future development trend.

1, the basic concept of pressure plugging

### 1.1 What is Pressure plugging?

Pressure plugging refers to the use of specific technical means to close the pipeline or equipment in a high pressure environment to ensure that there will be no fluid leakage during the operation. This technology is usually used in the maintenance, transformation and inspection of oil, gas and chemical transmission pipelines and equipment. The key to sealing with pressure is the ability to perform the necessary maintenance and overhaul without affecting the normal operation of the system.

### 1.2 Working principle of sealing with pressure

Sealing with pressure is mainly achieved through specific equipment and materials. Plugging devices are usually made of high-strength materials that can withstand certain pressures and temperatures. When working, the device mechanically or hydraulically fits the plugging device tightly to the channel of the pipeline or equipment to achieve a closed state. This method can effectively prevent the leakage of fluid and ensure the safety of operators.

2. Technical process with pressure plugging

### 2.1 On-site assessment

A thorough assessment of the site is required before a pressure plug can be carried out. This includes understanding the specific parameters of the pipe or equipment, such as pressure, temperature, fluid characteristics, etc. At the same time, it is also necessary to check the stability of the site to ensure the stability of the operator.

2.2 Select a plugging device

According to the evaluation results, the appropriate plugging equipment and materials are selected. Different fluid and pressure conditions require different types of plugging solutions. For example, for high temperature and high pressure gases, it may be necessary to use high temperature resistant sealing materials.

2.3 Implementation of plugging

When performing a plug implementation, the pipe first needs to be cleaned to ensure that the plug device can fit tightly. The plugging device is then installed in the designated position and the relevant mechanical or hydraulic system is activated to secure it. At this time, the pressure change of the system is monitored to ensure that the plugging effect meets the expectations.

2.4 Monitoring and maintenance

After plugging is implemented, the plugging status needs to be continuously monitored. This includes regularly checking parameters such as pressure and temperature to ensure that the sealing device is always in a good state of seal. At the same time, perform regular maintenance as required to extend the service life of the plugging device.

3. Application fields with pressure plugging

3.1 Oil and gas industry

In oil and gas industry, pressure sealing technology is widely used in pipeline maintenance and transformation. Especially in high-pressure pipelines, pressure plugging can effectively prevent fluid leakage, ensure the safety of operators, and reduce maintenance costs.

3.2 Chemical industry

In the chemical industry, many chemicals operate under high temperature and pressure, and pressure sealing technology can effectively isolate dangerous chemicals and avoid environmental pollution. In addition, the technology can also be used to overhaul chemical equipment, ensuring efficient operation under high pressure conditions.

3.3 Municipal works

In municipal engineering, pressure sealing technology is often used in the maintenance of water supply and drainage pipes. In the face of numerous and complex urban pipelines, pressure plugging can be quickly repaired without affecting the normal water supply and reduce the impact on citizens' lives.

4. Advantages of pressure sealing technology

### 4.1 High safety

Through effective sealing measures, it can work stably in high-pressure environments, reduce the risk of fluid leakage, and ensure the safety of operators. In addition, the use of pressure sealing technology can avoid losses caused by downtime.

### 4.2 Improve efficiency

Traditional maintenance methods often require downtime, resulting in low productivity. The pressure sealing technology can be maintained without affecting the normal operation of the system, which greatly improves the work efficiency.

4.3 Cost-effectiveness

Although the initial investment in pressure plugging technology may be high, it can effectively reduce downtime and material loss in the long run, thereby reducing overall maintenance costs. In addition, the risk of environmental pollution is reduced, which also has a positive impact on corporate social responsibility.

5. Challenges faced by pressure plugging technology

5.1 Technical complexity

Although the pressure plugging technology brings many conveniences, its implementation process is relatively complex and requires a technical team to operate. Therefore, how to train and cultivate high-quality technical personnel has become a major challenge facing the industry.

5.2 Selection of materials

There are many kinds of materials suitable for sealing with pressure, and how to choose the right material according to the specific situation to ensure the effectiveness of sealing is an important consideration in the technical implementation.

5.3 Regulations and Standards

With the wide application of pressure sealing technology, the relevant laws and regulations and industry standards are increasing. When implementing pressure plugging technology, enterprises must follow relevant regulations to ensure compliance.

Vi. Future development direction

With the progress of science and technology, pressure plugging technology is also developing. Here's where the technology could go in the future:

### 6.1 Automation

In the future, pressure plugging technology will develop in the direction of automation, with the help of sensors and Internet of Things technology, real-time monitoring of plugging status, improve response speed and decision efficiency.

6.2 Material innovation

The development of new materials will provide more options for pressurized plugging technology. The new sealing material with high temperature and corrosion resistance will improve the sealing effect and extend the service life of the equipment.

### 6.3 Automation

The introduction of automation technology will further improve the efficiency of sealing with pressure, reduce manual intervention and reduce the risk of human error.

## Conclusion

The precision machining technology with pressure sealing is of irreplaceable importance in modern industry. It can improve the efficiency of equipment maintenance, but also for the development of various industries to provide strong support. Despite some challenges, with the continuous progress and innovation of technology, the future of pressure plugging technology will be brighter. It is hoped that through the discussion of this paper, more attention and research on sealing technology with pressure can be triggered, and contribute to the further development of the industry.