What is the still water test for boiler tubes?
Hydrostatic pressure test of boiler tube
Boiler tube hydrostatic pressure test is a test method to test the strength and tightness of boiler tube system by filling pressure water into it. The main purpose of the test is to simulate the pressure environment of the boiler tube under actual working conditions, evaluate its ability to withstand pressure and seal performance, and ensure that the boiler tube system will not leak or break during the working process.
Test process
System preparation: Install the boiler tube system and close all interfaces to ensure that no air remains inside the system.
Fill with water and exhaust: Fill the system with clean fresh water and remove air and impurities from the system.
Boost and hold pressure: Use a pressure pump or other special equipment to slowly increase the water pressure in the system to the specified test pressure. This pressure is then maintained for a period of time (usually a few minutes to a few hours) to see if any leaks or anomalies occur in the system.
Check and record: During the pressure holding period, carefully check all parts of the boiler tube system, especially the key parts such as joints and welds, whether there is leakage. At the same time, record the relevant data during the test, such as pressure value, pressure holding time, etc.
Depressurization and drainage: After the test, gradually reduce the water pressure in the system and drain the water in the system.
Decision result: According to the observed phenomenon and data, determine whether the boiler tube system is qualified. If the system does not show any leakage or abnormal phenomenon during the test, it is considered to meet the requirements.
