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APPLICATION: |
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An internationally known tool manufacturer located in the Pacific Northwest was
experiencing severe pipe vibration in an overhead manifold system. The system
delivers coolant to several production grinding machines. The coolant is
delivered to the manifold by a 300 gpm centrifugal pump located in a reservoir
on the plant floor. |
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PROBLEM: |
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When the pump is started, a ball valve at the pump discharge is opened and fluid
is pushed vertically up to the horizontal manifold. The manifold does not stay
filled with liquid during idle periods so, when the pump is started the coolant
flowing into the manifold must first push the air trapped in the manifold out
the machine coolant nozzles before coolant reaches the machines. Since air moves
more quickly out the nozzles than liquid, when the coolant reaches the nozzles
the velocity of the coolant is instantly reduced and a water hammer effect
occurs creating severe pipe vibration. |
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SOLUTION: |
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A BLACOH 5 gallon surge suppressor was installed at the coolant pump’s
discharge. The suppressor absorbs most of the initial energy generated at pump
startup and then acts as a shock absorber as the water hammer shock travels back
down the pipeline to the pump. |
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RESULT: |
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Since the BLACOH surge suppressor has been installed, virtually all pipe
vibration has been eliminated. The potential for pipe failure due to vibration
has been minimized and worker safety has been greatly improved. A periodic check
of the surge suppressor’s gas charge is all that is required to maintain
trouble-free operation of the surge suppressor. |
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