Views: 1998 Author: Site Editor Publish Time: 2024-10-28 Origin: Site
Choosing the appropriate type and material of rotary joint based on the properties of the medium is an important decision-making process that directly affects the operational efficiency, safety, and maintenance costs of the equipment. Here are some specific suggestions:
1) Type of medium:
① If it is common heat media such as water, hot water, steam, and thermal oil, Q-type rotary joints can be selected, which are widely used in heating and drying cylinders in industries such as papermaking, printing and dyeing, plastics, and rubber.
② For rollers that require cooling, such as using cold water, oil, and other media, H-type rotary joints are a suitable choice and are suitable for various cooling scenarios.
③ D-type rotary joints are also a good choice for heating or cooling media such as steam and hot oil with low temperatures.
2) Medium temperature:
① High temperature media (such as high-temperature steam, thermal oil, etc.) require the selection of high-temperature resistant rotary joints, which usually use special materials and sealing structures to ensure good sealing performance even at high temperatures.
② For medium at room temperature or low temperature, conventional rotary joint types can be selected.
3) Medium pressure:
① High pressure media require the selection of rotary joints with higher design pressure to ensure that the joints will not leak or be damaged under high pressure.
② Low pressure media can choose rotary joints with lower design pressure to reduce costs.
4) Corrosivity of medium:
For corrosive media such as acidic and alkaline solutions, certain chemicals, etc., it is necessary to choose corrosion-resistant materials for rotary joints, such as stainless steel, alloy steel, etc.
1) Carbon steel material:
Suitable for general media, with good strength and plasticity, but poor corrosion resistance.
2) Stainless steel material:
Suitable for corrosive and high-temperature media. Stainless steel has good rust resistance and high temperature resistance, and can withstand a wide range of medium temperatures and pressures. Especially 316 stainless steel (titanium steel) has excellent corrosion resistance and high temperature resistance.
3) Ductile iron:
Imroved the mechanical properties, plasticity, and toughness of cast iron, making it suitable for applications with high strength requirements.
4) Ceramic material:
For some special media, such as those that require extremely high wear resistance and high temperature resistance, rotating joints made of materials such as silicon carbide special ceramics can be considered.
When choosing a rotary joint, in addition to considering the properties of the medium, it is also necessary to comprehensively consider the following factors:
1) Equipment speed: High speed rotating equipment requires the selection of rotating joints with good dynamic balance and wear resistance.
2) Connection form: Choose the appropriate connection form based on the structure and interface requirements of the device, such as flange connection, threaded connection, etc.
3) Sealing performance: Ensure that the rotary joint has good sealing performance to prevent medium leakage from causing damage to the equipment.
4) Convenience of maintenance and replacement: Choosing a rotating joint that is easy to maintain and replace can reduce the maintenance cost and time of the equipment.
In summary, selecting the appropriate type and material of rotary joint based on the properties of the medium is a comprehensive consideration process. It is necessary to fully understand the characteristics of the medium, such as type, temperature, pressure, corrosiveness, etc., and choose based on the actual needs and operating environment of the equipment.