| At times hydraulic machineries pose the problem of | | | | and "p" refer to initial fluid velocity and density while "c" |
| high vibration in pumps, lines and tanks. This problem of | | | | represents the speed of sound within the fluid. |
| constant vibration is termed as water hammer. The | | | | Solution |
| concept of water hammer is discussed in detail below: | | | | Certain damping devices like accumulators can be |
| Water Hammer: The Term | | | | used to curb down the noise problem. However, as |
| As the term itself suggests, water hammer refers to | | | | per the above equation, fluid velocity is the only |
| the banging sound of fluid through the pipe which is | | | | variable which can be manipulated to address the main |
| created due to the pressure wave, a by product of | | | | problem. The lower the fluid column velocity would be, |
| varying fluid velocity, within the pipe. When the banging | | | | the lower the subsequent pressure rise would be, |
| effect heightens, it almost sounds as if the pipe is being | | | | hence resultantly, lower sound effect. |
| hammered, thus, the term water hammer was coined | | | | For more information on hydraulic machines, tools and |
| to refer the problem. The common traits of this | | | | equipments, please visit the site An informative online |
| problem are high noise levels, broken pipes and | | | | knowledge source and B2B marketplace for various |
| vibrations. | | | | types of advanced hydraulic equipment & tools, |
| Technical Cause of Water Hammering | | | | hydraulic machines, hydraulic components, valves, |
| Technically, when a moving column of hydraulic fluid | | | | hydraulic lifting equipment, pumps and earth moving |
| hits a solid boundary, its velocity drops down to zero | | | | equipments. Get access to free product catalog |
| and the fluid column looses its strength to absorb the | | | | & suppliers directory. Also find information on |
| (kinetic) energy affiliated with its motion. Though as the | | | | global trade events, business trade leads and post free |
| fluid is incompressible, the deformation henceforth is | | | | trade leads. This is an useful B2b marketplace for |
| smaller making the fluid accumulate energy like a | | | | hydraulic equipment manufacturers, suppliers, exporters |
| spring. The level of pressure rise can be calculated as: | | | | and wholesalers. |
| Pr = P + u p cwhere "P" refers to initial pressure, "u" | | | | |