First test run: air tightness of high-pressure system
Thread Content
The operating pressure of the high-pressure system in our newly installed unit is 16 MPa. How many pressure levels are generally used when using a compressor to test for air tightness? Is it appropriate to conduct a gas-tightness test in stages of 0.6MPa, 2.0MPa, 4.0MPa, 8.0MPa, 12.0MPa, and 16.0MPa?
By the way, during the further pressure increase process, once it is confirmed that there is no leakage at a certain pressure, should the pressure be maintained for a while, or should the pressure increase be continued directly?
The operating pressure is 16 MPa; why does the airtightness check stop once it reaches 16 MPa?
This post was last edited by Progressive Mini Account on 2017-4-17 at 16:33. Oh, this was just written casually while typing. What I’m really asking is what level of pressure constitutes a threshold. The final airtightness pressure should be 16*1.1 MPa
I think the stage level is fine, but the maximum pressure should be at least 1.3 times the operating pressure
It is not recommended to use air pressure for airtightness – it’s too dangerous! ! It is recommended to do a water pressure test!
Why? What is the danger of air pressure? Some devices are difficult to dry and may not be suitable for use with water
1. First, tell me whether high-pressure airtightness is achieved using a pressure test blower or a system compressor； If a system compressor is used, it is first necessary to confirm whether it has an airtight gas valve (for nitrogen); otherwise, the valve may be damaged. 2. The airtightness is usually 0.6 or 1.0; low-pressure airtightness testing is carried out to identify problems promptly and address them in a timely manner. If the issues cannot be resolved, pressure release is necessary ； In the future, pressures of 3.0, 6.0, 12.0, and 16.0 can be selected for testing. In actual operation, when working at medium or high pressures, to save time, it is possible to check the values while increasing the pressure; also, refer to the equipment specifications to ensure that they meet the temperature and pressure increase curves required by the reactor. Generally, it is necessary to start the furnace first. 4. It is recommended to be as thorough as possible when checking for low-pressure airtightness, to identify as many leak points as possible and address them promptly ； After all, increasing pressure only to then release it is a waste
The reaction system and regeneration system cannot be fed with water