Petroleum hose is an important conduit in the petroleum industry, mainly used for transporting liquids or gases such as oil, natural gas, and fuel oil. Different usage environments and conveying media require the selection of different types of petroleum hoses. This article will introduce how to choose a suitable petroleum hose from the aspects of material, connection method, and pressure.
I. Material selection
The material of the petroleum hose is an important factor that affects its performance and service life. Common materials include rubber, polyester, polyurethane, polyethylene, and polypropylene. Different types of hoses have different advantages and disadvantages, and should be selected according to specific situations.
Rubber hose
Rubber hose is currently the most widely used type of hose in the industry. It has the advantages of corrosion resistance, high temperature resistance, good oil resistance, etc. Moreover, the rubber hose has the elasticity of compression and bending, which can adapt to complex usage environments. Therefore, it is widely used in the petroleum industry.
Polyester hose
Polyester hoses are lightweight, resistant to chemical corrosion, and UV-resistant, but are easily ruptured under high-temperature and high-pressure conditions. Therefore, when using polyester hoses, you need to choose according to specific conditions.
Polyurethane hose
Polyurethane hoses have the advantages of wear resistance, oil resistance, and high temperature resistance. They are widely used in the mining, construction, and other industries. However, they are not as good as rubber hoses in terms of corrosion resistance and flexibility.
Polyethylene and polypropylene hoses
Polyethylene and polypropylene hoses are lightweight, resistant to chemical corrosion, and low-temperature resistant. However, they are not as good as rubber hoses in terms of high-temperature resistance and corrosion resistance. Therefore, these two types of hoses are mainly used to transport low-temperature and low-pressure media.
II. Connection method selection
The petroleum hose needs to be connected to the pipeline or connector during use, and the connection methods commonly used are threaded connection, flange connection, clamp connection, quick-connect connection, etc. Different connection methods are suitable for different usage environments and conveying media.
Threaded connection
Threaded connection is currently the most widely used connection method, suitable for low-pressure and small-diameter conveying systems. The connection is simple, easy to install and disassemble, but it is not suitable for high-pressure and large-diameter pipelines.
Flange connection
Flange connection is suitable for high-pressure and large-diameter conveying systems, with a firm connection and good sealing. However, the connection requires multiple coordination and docking work, and the installation and disassembly are more complicated.
Clamp connection
The clamp connection is suitable for medium and low-pressure conveying systems, with a simple and fast connection, but it is not as good as the flange connection in terms of high-temperature resistance and corrosion resistance.
Quick-connect connection
Quick-connect connection is suitable for medium and low-pressure, small-diameter conveying systems. The connection is convenient and fast, but the durability is not as good as threaded connection and flange connection.
III. Pressure selection
The pressure that the petroleum hose can withstand is an important factor in choosing the hose. The suitable hose should be selected according to the usage environment and conveying media.
Low-pressure hose
The pressure that the low-pressure hose can withstand is generally below 10Bar, suitable for low-pressure conveying systems, such as gas stations, car refueling, etc.
Medium-pressure hose
The pressure that the medium-pressure hose can withstand is generally between 10~20Bar, suitable for medium-pressure conveying systems, such as oil tankers, ship oil transportation, etc.
High-pressure hose
The pressure that the high-pressure hose can withstand is generally above 20Bar, suitable for high-pressure conveying systems, such as petroleum exploration, transportation, and processing.
Conclusion:
When choosing a petroleum hose, comprehensive consideration should be given to the conveying medium, usage environment, connection method, and pressure-bearing capacity, and the suitable petroleum hose should be selected based on practical situations.