Dual Flow Rotary Union

What should be paid attention to when using and maintaining steam rotary joints?

As a precision fluid transmission equipment, steam rotary joints are widely used in industrial production for efficient and safe transportation of high-temperature steam. In order to ensure its long-term stable operation, maximize its service life, and prevent production interruptions or safety hazards caused by faults, correct use and regular maintenance are particularly important.

The following are key points to note during the use and maintenance of steam rotary joints:

1. Pre installation inspection: Before installing the steam rotary joint, it is necessary to conduct a comprehensive and detailed inspection of the equipment, including whether there is any damage to the appearance, whether the seals are intact, and whether the fasteners are loose. Ensure that there are no foreign objects remaining inside the joint, all connection parts are clean and rust free, and the interface size and specifications of the supporting equipment are completely matched. Strictly follow the installation guidelines provided by the manufacturer for assembly, ensuring that the coaxiality and verticality between joints, pipelines, and equipment meet the requirements, and avoiding vibration, leakage, or premature wear caused by improper installation.

2. Standardized operation: Before starting the steam system, preheating operation should be carried out, and the steam pressure should be slowly increased to the working range to avoid direct impact of cold steam on the internal components of the joint, causing severe temperature difference stress damage. During operation, closely monitor the changes in steam pressure, temperature, and flow rate, and maintain them within the range of joint design parameters. To avoid prolonged overload operation, regularly check the rotational flexibility of the rotary joint. If abnormal noise, increased vibration or torque are found, the machine should be stopped for inspection in a timely manner.

3. Regular maintenance: According to the usage conditions and the manufacturer's recommended maintenance cycle, regularly maintain the steam rotary joint. Mainly including cleaning the accumulated dust and dirt inside and outside, checking the wear of sealing components, and timely replacing aged or damaged sealing components; Lubricating bearings to ensure their good and smooth operation; Check the tightness of fasteners to prevent loosening caused by vibration. For joints exposed to harsh environments, anti-corrosion measures should be strengthened, such as applying rust proof grease or surface coating protection.

4. Preventive testing: Regular non-destructive testing, such as ultrasonic testing, magnetic particle testing, etc., is conducted to detect possible defects such as cracks, corrosion, and wear inside the joint as early as possible. Monitor the situation of steam leakage. If a slight leakage is found, the cause should be immediately identified and repaired to prevent energy waste and safety hazards caused by the expansion of the leakage. Regularly conduct pressure tests to verify the sealing performance and pressure bearing capacity of the joints.

5. Emergency response and recording: Establish a comprehensive emergency plan for faults, and promptly take measures to isolate, repair, or replace them once a fault occurs. At the same time, detailed records of the use, maintenance, and repair of the joint, including operating parameters, fault phenomena, repair content, replacement parts, and other information, provide data support for subsequent fault analysis, life prediction, and maintenance plan formulation.

In summary, the correct use of steam rotary joints and regular maintenance are the key to ensuring efficient and safe operation of equipment, reducing downtime due to malfunctions, and extending service life. Users should strictly follow the operating procedures, closely monitor the equipment status, and timely carry out preventive maintenance and testing to achieve the best use effect of steam rotary joints.

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