YQQ-11 is a two-stage hydrogen pressure reducer, which is a key component to ensure the safe transportation of hydrogen. In the power plant, engineers pay special attention to the regular leakage test of the YQQ-11 pressure reducer. This is not a whim, but there are profound reasons. Today, let’s talk about why this is so important.

Characteristics of hydrogen

First of all, we have to talk about hydrogen. Hydrogen is the lightest known gas, with strong diffusion and extremely flammable. Once it encounters a spark, the consequences are tense. Therefore, hydrogen must be handled with caution. The YQQ-11 pressure reducer is a big housekeeper who regulates the pressure in the hydrogen system. It must ensure that hydrogen is smoothly delivered from the high-pressure storage tank to the point of use without any mistakes.

Risk of leakage

If the pressure reducer YQQ-11 leaks, it will be a big trouble. Hydrogen leakage will first increase the concentration of hydrogen in the air. Once it reaches the explosion limit and encounters an open flame, the entire hydrogen system and even the surrounding facilities may be damaged. Secondly, hydrogen leakage may also pose a direct threat to workers. Inhaling too much hydrogen can cause dizziness or even coma. Finally, leakage will also lead to hydrogen waste and increase operating costs, which is obviously unacceptable for modern power plants that pursue economy and environmental protection.

Pressure reducer: pressure guardian

The pressure reducer YQQ-11 is a two-stage design, which means that it has two pressure regulation processes. The first stage reduces the pressure to an intermediate value, and the second stage further reduces it to the required working pressure. This design can provide a more stable outlet pressure, ensuring that the pressure fluctuation of hydrogen is small and the safety factor is high during use. But it is this complex structure that increases the risk of leakage, because one more link means one more place where errors may occur.

The importance of leak testing: preventive measures

Performing leak tests regularly is like giving the YQQ-11 pressure reducer a physical examination, which can detect problems in time and prevent problems before they occur. The test usually includes pressure testing and air tightness testing. By pressurizing to a certain value, observing whether there is a pressure drop or checking whether bubbles emerge with soapy water, it can be judged whether the pressure reducer has a leak. This preventive maintenance can avoid hydrogen leakage caused by pressure reducer failure and ensure the safe operation of the power plant.

Once a problem is found during the leak test, such as aging of a seal ring of the pressure reducer or wear of the valve, it must be replaced in time. This is not as simple as replacing a part. It is also necessary to ensure that the new part is compatible with the original system, installed correctly, and leak tested again. Only after confirming that everything is normal can it be put back into use. This whole process is like repairing a delicate musical instrument. Every step must be careful to ensure the pure sound.

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