Mechanical seal consultation
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Can blockage of the mechanical seal cooling water cause friction in the mechanical seal?
It can cause the mechanical seal to overheat, increase friction, and lead to leakage.
Seal cooling water is quite important for mechanical seals. Because when the pump operates at high speed, friction in the mechanical seal inevitably generates a lot of heat; combined with the temperature of the fluid itself, if there is no cooling water to cool the mechanical seal, the friction there will cause rapid wear, leading to seal failure and leakage. It is best to use pure water as the cooling water for machine seals, as it does not cause scaling; the service life of machine seals in our facility is generally over one year
Our company now doesn’t have a chance with APIs; it’s suffering from the ‘API disease’ – we insist that the mechanical seal’s service life must be over three years! It’s really troublesome – sealed cooling water is extremely important. Once the water supply to the external seals is cut off, scarring or cracks will likely appear on the sealing surfaces within three minutes. As for the internal seals, it’s hard to say; it depends on the temperature of the medium being transported and whether there are any particles present. In any case, their lifespan won’t be long, as the heat generated by seal friction cannot be dissipated. Pumps that use dual seals are usually used in conditions that are quite demanding or when dealing with hazardous media; therefore, it’s essential to pay close attention to the sealing water
If the cooling water for the mechanical seal is blocked, it becomes difficult to remove the heat from the stationary and rotating rings of the mechanical seal, and the temperature is likely to rise. At this point, friction in the mechanical seal increases inevitably; in severe cases, this can cause the stationary and rotating rings of the seal to break, leading to leakage. The pipelines must be flushed regularly, and the cause of any blockages should also be investigated. If the quality of the cooling water used for the mechanical seal is not satisfactory, it is necessary to switch to deionized water for cooling as soon as possible (low-pressure steam can also be used for cooling hot oil pumps). If there are issues with the structure of the cooling water jacket for the mechanical seal, it is important to modify that jacket promptly.
Yes, without cooling water, the moving and stationary rings of the mechanical seal will wear out due to friction very quickly
It also depends on the operating conditions of your machine seal; when the temperature is not high, the impact will be minimal. Turn to me if you have a machine seal leakage issue; I’ll help solve it.
Mechanical seal leakage occurs in the following situations: 1. Leakage happens during operation； 2. There is no leakage during operation, but leakage occurs when it stops ； (There are two scenarios: no leakage upon reshipping, or continuous leakage.) 3. There is no leakage during operation, nor when it is stopped, but leakage is detected during the turning gear inspection ； 4. In the stopped state, leakage occurs immediately upon startup (either it occurs once and then stops, or the leakage persists) ； 5. Leakage may occur at different times—it can return to a leak-free state on its own. There is a mechanism for all of the five situations mentioned above; if you explain them clearly, I can help solve them.
Mechanical seal leakage occurs in the following situations: 1. Leakage happens during operation； 2. There is no leakage during operation, but leakage occurs when it stops ； (There are two scenarios: no leakage upon reshipping, or continuous leakage.) 3. There is no leakage during operation, nor when it is stopped, but leakage is detected during the turning gear inspection ； 4. In the stopped state, leakage occurs immediately upon startup (either it occurs once and then stops, or the leakage persists) ； 5. Leakage may occur at different times—it can return to a leak-free state on its own. There is a mechanism for all of the five situations mentioned above; if you explain them clearly, I can help solve them. My email is 1240146566@qq.com
The mechanical seal no longer has coolant, so the heat generated by the friction between the rotating and stationary rings cannot be dissipated, causing the mechanical seal to fail quickly