The relationship between the rated pressure of the boiler and the jumping pressure of the safety valve
1, The function of boiler safety valve
The boiler safety valve is an important equipment to ensure the safe operation of the boiler. Its main function is that when the internal pressure of the boiler exceeds the preset jumping pressure of the safety valve, the valve will automatically open and discharge some steam or gas to avoid excessive pressure of the boiler, causing explosion or other hazards.
2, The relationship between the rated pressure of the boiler and the jumping pressure of the safety valve
Before formal operation, the boiler will undergo a series of tests and inspections, including the rated pressure test of the boiler. The rated pressure of a boiler refers to the maximum pressure that the boiler can withstand, usually expressed in MPa or kg/cm2. During the rated pressure test, the safety valve is usually set slightly higher than the rated pressure.
However, this does not mean that the jumping pressure of the safety valve at the rated pressure of the boiler is the rated pressure. In fact, the jumping pressure of safety valves usually needs to be adjusted according to different types of boilers and usage scenarios. For example, if the load change of the boiler is very small, the starting pressure of the safety valve should be 1-2% higher than the rated pressure. If the boiler load changes significantly, it is recommended to adjust the takeoff pressure to near the rated pressure.
3, How to Set the Correct Safety Valve Jumping Pressure
In order to ensure the safe operation of the boiler, the setting of the safety valve jump pressure is very important. Correct settings can effectively avoid situations of boiler overpressure or undervoltage. Setting the take-off pressure of a safety valve requires consideration of various factors, such as boiler type, load changes, pipeline size for discharging steam or gas, and so on.
Generally speaking, when adjusting the take-off pressure of boiler safety valves, multiple tests and checks need to be conducted first, and adjustments should be made based on actual data. During the adjustment process, extreme caution is required to ensure that the adjustment amplitude is appropriate and the test data is accurate and error free. Otherwise, it may have adverse effects on the normal operation of the boiler.
4, Summary
The rated pressure of the boiler and the safety valve trip pressure are important parameters for the safe operation of the boiler. Although there is a certain correlation between the two, the jumping pressure of the safety valve needs to be adjusted according to the actual situation. To ensure the safe and stable operation of the boiler, the jumping pressure setting of the safety valve must be accurate and error free. At the same time, the operation of the boiler also requires frequent monitoring and detection to ensure that all parameters are within the normal range, thereby maximizing the safety and efficient operation of the boil
