Exploration and practice of research and development and manufacture of various sealing technologies with pressure

With the rapid development of industrialization, especially in petroleum, natural gas, chemical and other fields, the reliability of pipelines is particularly important. In the process of long-term use of common pipelines, problems such as leakage and corrosion will inevitably occur. In order to solve these problems, pressure plugging technology came into being. Pressure plugging can maintain and overhaul the pipeline while maintaining the pressurized state, and can effectively reduce the economic loss caused by shutdown. This paper will deeply discuss the research and development and manufacturing process of pressure sealing, and analyze its technical key points, application fields and future development trend.

#### I. Overview of sealing technology with pressure

Pressure plugging refers to the technology of sealing the pipeline through a specific plugging device under the condition that the fluid pressure in the pipeline is maintained. Its main purpose is to prevent the leakage of fluid in the pipeline and protect the environment and equipment. Pressure plugging technology is generally divided into several types, including gas plugging, liquid plugging and mechanical plugging.

In gas sealing, high-pressure gas is used to seal the pipeline; Liquid plugging, on the other hand, uses a high viscosity liquid to form a sealing layer to prevent the flow of fluid. Mechanical plugging is the direct physical plugging of the pipeline through the specific design of the plugging instrument. In practical applications, different types of pressure plugging technology have their own advantages and disadvantages, enterprises need to choose the right solution according to specific needs.

#### II. Research and development stage

The research and development process of sealing technology with pressure involves many steps, including demand analysis, design and development, material selection, experimental testing, etc.

1. ** Demand analysis **

In the process of research and development, we must first conduct a comprehensive analysis of the market demand. This includes understanding the actual needs of the customer, the particularities of the use environment, and potential hazards. On this basis, the R & D team can clarify the functional positioning and technical parameters of the product.

2. ** Design and development **

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According to the results of requirement analysis, the R&D team began to design and develop. The design phase includes 3D modeling, mechanical analysis, and computer software simulation to evaluate the performance of the plugging device under high pressure environments. The design process also needs to consider the operability, portability and maintenance convenience of the device.

3. ** Material selection **

The choice of material with pressure plugging device is very important. The material should have good pressure resistance, corrosion resistance, high temperature resistance and other characteristics. Commonly used materials include alloy steel, stainless steel and special plastics. The research and development team needs to consider the cost, performance and environmental adaptability of the material.

4. ** Experimental test **

After the design and material preparation is complete, the R&D team will conduct a series of experimental tests to evaluate the performance of the plugging device. This includes sealing performance testing, pressure resistance testing, and reliability testing for long-term use. Through the experimental data, the R&D team continuously optimizes the design to ensure the reliability of the product in practical applications.

#### 3. Manufacturing process

The manufacturing process of sealing device with pressure includes raw material procurement, processing and manufacturing, assembly and testing.

1. ** Raw material purchase **

In the procurement stage of raw materials, enterprises need to establish a good cooperative relationship with suppliers to ensure the quality of materials and delivery cycle. Different materials need to carry out strict quality testing to ensure that they meet the design requirements.

2. ** Manufacturing **

The processing and manufacturing link is the key in the whole production process. High-precision machining equipment ensures that the quality of each component is up to standard. Usually, enterprises will use CNC machine tools, laser cutting and other advanced technologies to improve production efficiency and quality.

3. ** Assembly test **

After the parts processing is completed, enter the assembly link. During the assembly process, special attention should be paid to the coordination and sealing performance between the components. After the assembly is completed, system testing is required to ensure that the performance of the plugging device meets the expected standards.

4. Application field

The application field of pressure sealing technology is very wide, mainly including the following aspects:

1. ** Oil and Gas industry **

In the exploitation and transportation of oil and natural gas, the stability of pipelines is very important. The sealing technology with pressure can seal the pipeline quickly when there is a leak, avoiding environmental pollution and economic loss.

2. ** Chemical industry **

The production process of chemical plants often involves a variety of highly corrosive and dangerous chemicals, and pressure sealing technology can effectively prevent chemical leakage and ensure operation.

3. ** Municipal Engineering **

In urban water supply and drainage systems, pressure sealing technology can be used for pipeline maintenance and replacement to reduce the impact on citizens' lives.

4. ** Power Industry **

With the higher and higher requirements for equipment in the power industry, pressure sealing technology is gradually applied to the maintenance and overhaul of high-pressure oil pipes.

#### 5. Future development trends

In the future, the sealing technology with pressure will be developed in the direction of automation, hygiene and high efficiency.

1. ** Automation **

With the development of Internet of Things technology, the automatic management of pressure plugging equipment will be gradually realized. Through sensors and monitoring systems, the status of the pipeline is monitored in real time, and potential leakage risks are warned in advance.

2. ** Hygiene **

In the face of increasingly severe environmental problems, research and development enterprises should pay attention to the hygiene of pressure sealing technology. Future plugging materials and technologies will take more account of environmental impact.

3. ** High efficiency **

In the manufacturing process, improving production efficiency and shortening production cycle will be the future development trend. Through automation and information technology, enterprises can improve production efficiency and reduce costs under the premise of ensuring quality.