Valve testing bench is a specialized equipment used to test the performance of various types of valves, ensuring that valves meet design and application requirements. The main testing items include sealing, strength, opening pressure, closing performance, and flow characteristics.
The main sealing test of the valve testing bench is to check whether there is any medium leakage after the valve is closed. The testing standards are often in accordance with GB/T 13927, etc. The strength test applies a test medium higher than the rated pressure to the valve to verify its pressure resistance performance. Performance testing for opening and closing, testing the opening or closing pressure of valves under specific conditions. Durability testing, simulating working conditions, continuous operation multiple times, testing the service life of the valve. Special operating condition testing, testing for special valve designs, such as high temperature and high pressure, low temperature vacuum, etc.
Multiple tests can be completed on one device, and the testing bench is usually equipped with an automated detection system to improve testing accuracy and data reliability. Safe operation, multiple protective devices are used to avoid accidents during the testing process. Suitable for testing valves of various specifications and types.
Valve testing bench is a key equipment to ensure valve performance, and its efficient and safe operation is of great significance to industrial production. To ensure safety, accuracy, and efficiency when operating and using a valve test bench, the following are some precautions to be taken:
Preparation before operation
Check equipment status: Check whether the mechanical components, pipelines, and electrical equipment of the test bench are intact. Ensure that the hydraulic oil (if applicable) or other testing media is sufficient and of satisfactory quality. Check the accuracy of instruments such as pressure gauges and flow meters to ensure effective calibration.
Confirm testing environment: Ensure that the testing environment is clean and free of flammable and explosive materials. The work area must have good ventilation. Operators should wear appropriate personal protective equipment (such as safety goggles, gloves, hearing protection, etc.).
Understand the test object: clarify the specifications, models, materials, and rated pressure range of the valve to be tested. Check whether the valve is damaged, corroded, or abnormal.
Operation process
Correctly install the valve:
Use an adapter fixture to securely fix the valve, ensuring that it will not shift due to pressure or vibration. Confirm that the pipeline connection is tight and there is no risk of leakage.
Gradually increase the pressure:
Set the test pressure according to the specifications and do not exceed the rated pressure of the valve. The pressure rise process should be slow and uniform, and the changes in the pressure gauge should be observed to avoid sudden pressure fluctuations.
Observation and recording:
Observe the test bench for leaks, abnormal vibrations, or noise. Record test data as required (such as opening pressure, sealing, flow rate, etc.).
Attention to emergency handling:
If any abnormality occurs (such as medium leakage or equipment failure), immediately stop the operation and check the cause after pressure relief. Avoid touching high-pressure areas or leaking media directly with your hands.
Closing after operation
Pressure relief and cleaning:
After the test is completed, ensure that the test bench is completely depressurized before disassembling the valve. Clean the surface and surrounding environment of the test bench.
Inspection and maintenance:
Check if the testing bench has been damaged during the testing process and maintain it in a timely manner. Regularly replace vulnerable components such as seals and pipelines to extend the service life of the equipment.
Record and archive:
Organize and archive the test results to ensure traceability. Indicate the problematic valves and notify the relevant departments for handling.