High water temperature and pressure at the pump inlet: how to prevent leaks
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I have a water pump at my production site; the temperature of the water entering the pump is around 150–160°C, and the pressure is close to 0.5 Mpa. The pump casing as well as the gaskets at the pump’s inlet and outlet areas often leak. I would like to modify the process in order to reduce these leaks. Modification plan: Install a short-circuit circuit at the inlet and outlet, add a check valve; the pump will continue to operate, which may help reduce leaks. Please take a look at the image; experts, feel free to give your feedback.
It only increases the chances of leakage; it’s useless.
I don’t understand; isn’t a leak in the import/export gasket a sealing issue? Changing the process flow won’t solve many problems; consider the material of the flange sealing surface and gaskets, as well as the choice of gaskets
This should not involve changing the process, but rather modifying the piping – such as raising the grade of the flanges, checking for stress on the pump, and changing the gaskets used.
The water temperature in this pipeline is high, so there must be some steam, or a mixture of steam and water. Using this to treat the flanges, pumps, etc., does not yield the desired results. The bypass route also serves to reduce pressure; moreover, if there is some steam present, it can be directed through the bypass route to ensure that the pump only handles water. Is my thinking correct? Welcome everyone to discuss! !
At first, there was no leakage; but after a short operating period, leakage started to occur. Efforts are being made to carry out modifications in order to extend the operating period.
It shouldn’t be possible to pass through; after the pump is pressurized, the outlet pressure is higher than the inlet pressure, so the water vapor in front of the pump can’t rise upward
Pump: the inlet water temperature is around 150-160°C. That’s not water at all – it’s low-pressure steam. Is the flow rate on the pump good?
You’re right; it’s low-pressure steam. We call it high-flash water because it results from water being flash-evaporated at an initial pressure of 20 kilograms per square meter, after which the pressure drops to around 0.5 Mpa before it is transported.
The pump operates in a vapor-liquid mixture, resulting in severe vibration!