How to prevent the centrifugal water pump explosion?

Water pump will explode, too? If you haven't heard about, but small make up can tell you, if there is a maintenance is improper operation will explode. So to prevent the pump before the explosion, what should we do?

explosion of above and below the picture is the centrifugal pumps. Explosion happened not because of the pump with impurities, and some should not appear in the pump or water pump in the materials caused by the chemical reaction happened. As a matter of fact, such explosion, the water in the pump is very pure, — Such as boiler feed water and condensate and deionized water. The explosions

how did it happen?

the answer is: the centrifugal pump at runtime, there have been a period of time of the pump inlet valve and outlet valve closed at the same time, The water pump 'idle') In the case. Because the water can't through the pump flow, so the original for fluid conveying all energy is transformed into heat. When water is heated, static pressure inside the pump, the pressure enough to damages to the centrifugal water pump - — Possible damage of seal, pump body fracture.

due to the release of accumulated energy inside pump, the explosion may cause serious damage to the equipment and personal injury. However, if before the pump damage above water is heated to boiling point temperature, it could happen explosion greater energy, when released too quickly boiling hot water and expansion ( Boiling liquid expanding vapor explosion - — BLEVE) And the severity and harmfulness of similar to the steam boiler exploded.

if the pump is running, and the pump inlet valve and outlet valve is closed, so no matter what kind of liquid pump, this type of explosion may occur. Even if there is no danger of fluid such as water, also produced the figure shown in serious harm, imagine if the fluid is flammable, then release the materials will burst into flames, the consequences is more serious. Idea further, if the fluid is toxic or corrosive, then release the materials may cause serious damage to pump nearby personnel.

pump before the explosion, what can you do?

before start centrifugal pumps, to check whether all valves in the correct position. To verify the design of flow path of the valve is in open state, and other valves, such as the drain valve and drain valve shall be closed.

if you want to remotely start a pump, such as from the control room, make sure that you are about to start the pump has been ready to start. If you are not sure, you will be to the scene to inspect, or to please others to view.

make sure that the key step is vital for the safe operation of the water pump, including the location of valve, should be included in the equipment operating procedures and checklists.

some of the pump are automatically start - — For example, when a tank filled with, the process control computer or liquid level control instrument automatic emptying storage tank. Before put the pump in automatic control, such as after the repair, please make sure that all the valves are in the correct position.

in order to prevent the pipe can't start the pump, under the condition of some pump equipped with instruments protection - — For example, low flow, high temperature, or overpressure interlock, etc. To ensure that these security system to get proper maintenance and testing.

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