the noise of the hydraulic pump

Web Design And Seo For www.china-webdesign.com

hydraulic hose assemblies - China Manufacturer

Thank you for inquiry my hydraulic hose assemblies, Tel : +86-0574-88461212, E-mail:ph@ph-fitting.com

http://www.ph-fitting.com/Hose-Assembly/

The noise is very harmful to people\\ s health, the impact of industrial noise on people more and more serious with the development of industrial production, has been a cause for concern. Hydraulic technology toward the direction of the high -pressure, high flow and high power, the noise generated by increased noise in the hydraulic system, hydraulic pump noise to account for a large proportion. Therefore, to reduce the noise of the hydraulic system, especially the noise of the hydraulic pump, has aroused the attention of the hydraulic sector engineers and technicians, experts and scholars.hydraulic couplings

The size and the hydraulic pump of the hydraulic pump noise type, structure, size, speed, and working pressure related to many factors. , Resulting in the reason of the noise

(1) pump flow fluctuation and pressure fluctuation caused by the vibration of the pump components. This vibration is sometimes also have a resonance. The resonant frequency of flow pulsation frequency two times, three times or more and pump fundamental frequency and its resonant frequency and mechanical or hydraulic natural frequency , the noise will be greatly increased. The results show that the speed increases the noise is generally bigger than the pressure increase.

(2) The working chamber of the pump from the suction chamber, a sudden and pressure oil chamber connected, or suddenly connected to the suction chamber from the pressure oil chamber, the fluid flow and pressure generated by mutation, exert a great influence on the noise.

(3) cavitation. When the pressure of the air separation under pressure less than oil in the pump suction chamber where temperature, the air dissolved in the oil precipitation into bubbles, with bubbles of oil into the high pressure chamber, bubble break the formation of local high-frequency pressure impact, causing the noise.

(4) pump flow channel cross section a sudden expansion and contraction, sharp turn, the channel cross-section caused by liquid turbulence, vortex and jet, so t hat the noise increase.

(5) due to mechanical reasons, such as the rotating part of the imbalance, bad bearings, shaft bending and other mechanical noise caused by mechanical vibration.metric hydraulic hose fittings

Second, measures to reduce noise

(1) elimination of the dramatic changes of the internal fluid pressure of the hydraulic pump.

(2) to absorb the hydraulic pump flow and pressure fluctuation in the hydraulic pump muffler exit devices.hydraulic valve manifold

(3) The pump should be installed in the fuel tank on the rubber pad damping.

(4) The period of pressure tubing with a rubber hose, pump and piping connections to vibration isolation.

(5) to prevent pump cavitation can be used with larger diamete r suction pipe, reduce the local resistance of the pipeline; large capacity suction filter to prevent oil mixed with air; the rational design of hydraulic pumps, improve part stiffness.