Secondary Pressure Reduction of Hydraulic System in Rolling Machine
Hydraulic systems are usually used extensively in rolling machines. Due to the high kinetic energy needed during the milling process, a large pressure must be applied to the system in order to drive the rolling process. This large pressure can be dangerous if not managed properly. To ensure the safety of the system and its operators, a secondary pressure reduction strategy must be employed.
The most common method of secondary pressure reduction is through the installation of a pressure reducing valve. This type of valve is designed to reduce the output pressure of the system to a specified level, typically in the range of 1,000 to 4,000 psi (68.9 to 275.8 bar). The valve is typically installed between the pump and the hydraulic cylinders to ensure that the pressure of the hydraulic fluid never exceeds the safe limits of the system.
Another way to reduce the pressure of the hydraulic system is to employ a variable speed drive. This type of device is typically installed on the pump and is used to control the speed of the pump. By adjusting the speed, the output pressure of the system can be reduced as well.
It should also be noted that most rolling machines also employ an accumulator, which is designed to absorb some of the excess pressure that is generated during the milling process. The accumulator is typically connected to the pressure reducing valve and the variable speed drive to ensure that the pressure of the system is always within the safe limits.
Finally, a pressure relief valve is also often used on rolling machines. This type of valve is designed to open at a certain pressure level, allowing excess pressure to vent away from the system. This provides an additional safeguard in the event of a catastrophic failure in a component of the system.
In summary, secondary pressure reduction of the hydraulic system in a rolling machine is essential to protect both the machine and its operators. Without it, the system could be damaged or become unsafe for use. The most common methods of secondary pressure reduction are through the use of a pressure reducing valve, a variable speed drive, and an accumulator. In addition, a pressure relief valve can provide an additional level of safety in the event of a malfunction.
