Setting of safety valve on steam generator
Thread Content
Setting of safety valve on steam generator 1. Are two safety valves necessary? 2. Are the two set up as backups for each other? 3. Are the two settings used in parallel?
The purpose of setting up two safety valves is for one to be used and the other to be used as a backup. There are even several safety valves at the same time, one is used as a backup and the others are put into use. If the steam generator is certified according to the boiler regulations, according to the boiler regulations, a hand valve is not allowed upstream of the safety valve. Therefore, if there are several safety valves, all of them are put into use. If inspection is required, online verification is required.
1. For more than ten years, we have had two sets of lung heat boilers equipped with two safety valves. Moreover, the constant pressures of these two safety valves are different, with a difference of about 0.5MPa, and they are both put into use at the same time. 2. Two safety valves with different constant pressures have different functions.: A safety valve with a low trip pressure is called a control safety valve, and a slightly higher one is a working safety valve. The safety valve is controlled to jump first to act as an alarm, and at the same time it can also reduce the pressure of the waste pot. If the pressure of the waste pot continues to rise at this time, the working safety valve will trip. On the one hand, this can reduce the waste of steam, and on the other hand, it can also avoid excessive pressure fluctuations in the waste pot.