意大利阿托斯直動(dòng)式溢流閥,ATOS直動(dòng)式溢流閥文檔
當(dāng)由于各種原因，空氣被吸入油液中，或者在油液壓力低于大氣壓時(shí)，
溶解在油液中的部分空氣就會(huì)析出形成氣泡，這些氣泡在低壓區(qū)時(shí)體積較大，
Over-flow area is very small, high flow rate, up to 200 m / s,
easy to cause uneven pressure distribution,
導(dǎo)式溢流閥調(diào)壓失靈現(xiàn)象有二種情況：
種是調(diào)節(jié)調(diào)壓手輪建立不起壓力，或壓力達(dá)不到額定數(shù)值；
另種調(diào)節(jié)手輪壓力不下降，甚不斷升壓。
出現(xiàn)調(diào)壓失靈，除閥芯因種種原因造成徑向卡緊外，還有下列些原因：
pressure regulating spring deformation, etc., will also cause the cone valve vibration.
It is generally believed that the pilot valve is the source of noise generated by the source.
在高壓情況下溢流時(shí)，導(dǎo)閥的軸向開口很小，僅0.003～0.006厘米。

意大利阿托斯直動(dòng)式溢流閥,ATOS直動(dòng)式溢流閥文檔
過(guò)流面積很小，流速很高，可達(dá)200米/秒，易引起壓力分布不均勻，
使錐閥徑向力不平衡而產(chǎn)生振動(dòng)。另外錐閥和錐閥座加工時(shí)產(chǎn)生的橢圓度、
導(dǎo)閥口的臟物粘住及調(diào)壓彈簧變形等，也會(huì)引起錐閥的振動(dòng)。
Oil bubbles in the rapid changes in the phenomenon of this phenomenon.
Sudden changes in the volume of the bubble will produce noise,
And because this process occurs in an instant, will cause local hydraulic shock and produce vibration.
The pilot valve and the main valve port of the pilot relief valve, the oil flow rate and pressure changes greatly,
It is prone to hole phenomenon, resulting in noise and vibration.
當(dāng)隨油液流到高壓區(qū)時(shí)，受到壓縮，體積突然變小或氣泡消失；
反之，如在高壓區(qū)時(shí)體積本來(lái)較小，而當(dāng)流到低壓區(qū)時(shí)，體積突然增大，
導(dǎo)型溢流閥的導(dǎo)閥部分是個(gè)易振部位如圖3所示。
So that the radial force of the cone valve is not balanced and produce vibration.
Another cone valve and cone valve seat processing produced when the oval,
The mouth of the mouth of the dirt stickers and
所以般認(rèn)為導(dǎo)閥是發(fā)生噪聲的振源部位。