武漢耀泰機電設備有限公司
聯系人:劉先生
電話:027-87781598 手機:15377633192 傳真:027-87781567 QQ:1213372861 郵箱:1213372861@qq.com
PVV1-1X/036RA15UVB
A4VSO250DR/30R-PPB13N00
PVV1-1X/046RJ15DMB
PVV1-1X/046RA15UVB
PVV1-1X/018RA15UVB
PVV1-1X/027RR15RMB
PVV1-1X/046RR15RMB
A11VO40LRH2/10R-NPC12N00
A11VO40DRS/10R-NSC12N00
A11VO40DRS/10R-NPC12N00
A11VO60LRS/10R-NSC12N00
A11VO60LRS/10R-NPC12N00
A11VO60LRS/10R-NSC12K01
A11VO60LRS/10R-NPC12K01
A11VO60LRH2/10R-NSC12N00
A11VO60LRH2/10R-NPC12N00
A11VO60LRH2/10R-NSC12K01
A11VO60LRH2/10R-NPC12K01
A11VO60DRS/10R-NSC12N00
A11VO60DRS/10R-NPC12N00
A11VO60DRS/10R-NSC12K01
A11VO60DRS/10R-NPC12K01
A11VO75LRS/10R-NSD12N00
A11VO75LRS/10R-NPD12N00
A11VO75LRS/10R-NSD12K01
A11VO75LRS/10R-NPD12K01
A11VO75LRH2/10R-NSD12N00
A11VO75LRH2/10R-NPD12N00
A11VO75LRH2/10R-NSD12K01
A11VO75LRH2/10R-NPD12K01
A11VO75DRS/10R-NSD12N00
A11VO75DRS/10R-NPD12N00
A11VO75DRS/10R-NSD12K01
A11VO75DRS/10R-NPD12K01
A11VO95LRS/10R-NSD12N00
A11VO95LRS/10R-NPD12N00
A11VO95LRS/10R-NSD12K01
A11VO95LRS/10R-NPD12K01
A11VO95LRH2/10R-NSD12N00
A11VO95LRH2/10R-NPD12N00
A11VO95LRH2/10R-NSD12K01
A11VO95LRH2/10R-NPD12K01
A11VO95DRS/10R-NSD12N00
A11VO95DRS/10R-NPD12N00
A11VO95DRS/10R-NSD12K01
A11VO95DRS/10R-NPD12K01
A11VO130LRS/10R-NSD12N00
A11VO130LRS/10R-NPD12N00
A11VO130LRS/10R-NSD12K02
A11VO130LRS/10R-NPD12K02
A11VO130LRH2/10R-NSD12N00
A11VO130LRH2/10R-NPD12N00
A11VO130LRH2/10R-NSD12K02
A11VO130LRH2/10R-NPD12K02
A4VSO250DR/30R-PPB13N00
A11VO130DRS/10R-NPD12N00
A11VO130DRS/10R-NSD12K02
A11VO130DRS/10R-NPD12K02
A11VLO190LRS/11R-NSD12N00 2015194
A11VLO190LRS/11R-NPD12N00
A11VLO190LRS/11R-NSD12K02
A11VLO190LRS/11R-NPD12K02
A11VLO190HD1/11R-NSD12N00
A11VLO190HD1/11R-NPD12N00
A11VLO190HD1/11R-NSD12K02
A11VLO190HD1/11R-NPD12K02
當由于各種原因,空氣被吸入油液中,或者在油液壓力低于大氣壓時,溶解在油液中的部分空氣就會析出形成氣泡,這些氣泡在低壓區時體積較大,當隨油液流到高壓區時,受到壓縮,體積突然變小或氣泡消失;反之,如在高壓區時體積本來較小,而當流到低壓區時,體積突然增大,油中氣泡體積這種急速改變的現象。氣泡體積的突然改變會產生噪聲,又由于這一過程發生在瞬間,將引起局部液壓沖擊而產生振動。先導式溢流閥的導閥口和主閥口,油液流速和壓力的變化很大,很容易出現空穴現象,由此而產生噪聲和振動。
(3)液壓沖擊產生的噪聲
先導式溢流閥在卸荷時,會因液壓回路的壓力急驟下降而發生壓力沖擊噪聲。愈是高壓大容量的工作條件,這種沖擊噪聲愈大,這是由于溢流閥的卸荷時間很短而產生液壓沖擊所致在卸荷時,由于油流速急劇變化,引起壓力突變,造成壓力波的沖擊。壓力波是一個小的沖擊波,本身產生的噪聲很小,但隨油液傳到系統中,如果同任何一個機械零件發生共振,就可能加大振動和增強噪聲。所以在發生液壓沖擊噪聲時,一般多伴有系統振 動。
(4)機械噪聲A4VSO250DR/30R-PPB13N00
先導式溢流閥發出的機械噪聲,一般來自零件的撞擊和由于加工誤差等產生的零件磨擦。
在先導型溢流閥發出的噪聲中,有時會有機械性的高頻振動聲,一般稱它為自激振動聲。這是主閥和導閥因高頻振動而發生的聲音。它的發生率與回油管道的配置、流量、壓力、油溫(粘度)等因素有關。一般情況下,管道口徑小、流量少、壓力高、油液粘度低,自激振動發生率就高。
預防措施