派克溢流閥DSDU1072E16K上海一級供應(yīng)商

注意事項

    噪聲和振動

    液壓裝置中容易產(chǎn)生噪聲的元件一般認(rèn)為是泵和閥，閥中又以溢流閥和電磁換向閥等為主。產(chǎn)生噪聲的因素很多。溢流閥的噪聲有流速聲和機(jī)械聲二種。流速聲中主要由油液振動、空穴以及液壓沖擊等原因產(chǎn)生的噪聲。機(jī)械聲中主要由閥中零件的撞擊和磨擦等原因產(chǎn)生的噪聲。

  （1）壓力不均勻引起的噪聲  

    先導(dǎo)型溢流閥的導(dǎo)閥部分是一個易振部位如圖3所示。在高壓情況下溢流時，導(dǎo)閥的軸向開口很小，僅0.003～0.006厘米。過流面積很小，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。另外錐閥和錐閥座加工時產(chǎn)生的橢圓度、導(dǎo)閥口的臟物粘住及調(diào)壓彈簧變形等，也會引起錐閥的振動。所以一般認(rèn)為導(dǎo)閥是發(fā)生噪聲的振源部位。

    由于有彈性元件（彈簧）和運(yùn)動質(zhì)量（錐閥）的存在，構(gòu)成了一個產(chǎn)生振蕩的條件，而導(dǎo)閥前腔又起了一個共振腔的作用，所以錐閥發(fā)生振動后易引起整個閥的共振而發(fā)出噪聲，發(fā)生噪聲時一般多伴隨有劇烈的壓力跳動。

  （2）空穴產(chǎn)生的噪聲

    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，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(qū)時體積較大，當(dāng)隨油液流到高壓區(qū)時，受到壓縮，體積突然變小或氣泡消失；反之，如在高壓區(qū)時體積本來較小，而當(dāng)流到低壓區(qū)時，體積突然增大，油中氣泡體積這種急速改變的現(xiàn)象。氣泡體積的突然改變會產(chǎn)生噪聲，又由于這一過程發(fā)生在瞬間，將引起局部液壓沖擊而產(chǎn)生振動。先導(dǎo)式溢流閥的導(dǎo)閥口和主閥口，油液流速和壓力的變化很大，很容易出現(xiàn)空穴現(xiàn)象，由此而產(chǎn)生噪聲和振動。

  （3）液壓沖擊產(chǎn)生的噪聲

    先導(dǎo)式溢流閥在卸荷時，會因液壓回路的壓力急驟下降而發(fā)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(chǎn)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(chǎn)生的噪聲很小，但隨油液傳到系統(tǒng)中，如果同任何一個機(jī)械零件發(fā)生共振，就可能加大振動和增強(qiáng)噪聲。所以在發(fā)生液壓沖擊噪聲時，一般多伴有系統(tǒng)振 動。

 （4）機(jī)械噪聲

     先導(dǎo)式溢流閥發(fā)出的機(jī)械噪聲，一般來自零件的撞擊和由于加工誤差等產(chǎn)生的零件磨擦。

     在先導(dǎo)型溢流閥發(fā)出的噪聲中，有時會有機(jī)械性的高頻振動聲，一般稱它為自激振動聲。這是主閥和導(dǎo)閥因高頻振動而發(fā)生的聲音。它的發(fā)生率與回油管道的配置、流量、壓力、油溫（粘度）等因素有關(guān)。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(fā)生率就高。

派克溢流閥DSDU1072E16K上海一級供應(yīng)商

RE06M25T2V1F026

RE06M10T2N1F0

RE06M10T2N1G0

RE06M10T2V1F0

RE06M10T2V1G0

RE06M17T2N1F0

RE06M17T2N1G0

RE06M17T2V1F0

RE06M17T2V1G0

RE06M25T2N1F0

RE06M25T2N1G0

RE06M25T2V1F0

RE06M25T2V1G0

RE06M35T2N1F0

RE06M35T2N1G0

RE06M35T2V1F0

RE06M35T2V1G0

RE06M10T2N1F026

RE06M10T2N1G026

RE06M10T2V1F026

RE06M10T2V1G026

RE06M17T2N1F026

RE06M17T2N1G026

RE06M17T2V1F026

RE06M17T2V1G026

RE06M25T2N1F026

RE06M25T2N1G026

RE06M25T2V1F026

RE06M25T2V1G026

RE06M35T2N1F026

RE06M35T2N1G026

RE06M35T2V1F026

RE06M35T2V1G026

RE10R17T4SN1G0M

RE10R35W4SN1XWM

RE10M35W4SN1XWM

RE10M17W4SN1XWM

RE10M35T4SN1F0

RE10M10T4SN1F0

RE10M17T4SN1F0

RE10M25T4SN1F0

RE10M35T4SN1G0

RE10M35T1SV1F0M

RE10R25W4SN1XWM

RE10M35T1SN1F0

RE10M35W1SN1KWM

RE10R25T4SN1F0M

RE10M25W4SN1KWM

RE10M25W4SN1XWM

RE10R35T4SN1F0

RE10M25T4SN1R0

RE10R35W1SN1XWM

RE10R17T4SN1R0M

RE10M17T4SN1R0

RE10M35W4SN1KWM

RE10M35W1SN1XWM

RE10M35W1SV1KWM

RE10R35T1SN1F0

RE10M10T4SN1R0

RE10R25W1SN1KW

RE10R35W4SN1KW

RE10M25T1SN1R0

RE10M17W1SN1XWM

RE10R35T1SN1F0M

RE10M10W4SN1KWM

RE10M10W4SN1XWM

RE10R17W1SN1XW

RE10R17T4SN1F0M

RE10M17W4SN1KWM

RE10M10W1SN1KWM

RE10M25T1SN1F0M

RE10R25W1SN1XWM

RE10R17W4SN1XW

RE10R35W1SN1KW

RE10R35W1SN1KWM

RE10R10W4SN1KW

RE10R35T4SN1F0M

RE10R35W4SN1KWM

RE10M35W4SV1XWM

RE10R25T1SN1F0

RE10R17T1SN1F0M

RE10M25T4SN1F0M

RE10R10W4SV1KWM

RE10R17T4SN1G0M46

RE10R35W4SN1XWM41

RE10M35W4SN1XWM41

RE10M17W4SN1XWM41

RE10M35T4SN1F046

RE10M10T4SN1F046

RE10M17T4SN1F046

RE10M25T4SN1F046

RE10M35T4SN1G046

RE10M35T1SV1F0M46

RE10R25W4SN1XWM41

RE10M35T1SN1F046

RE10M35W1SN1KWM41

RE10R25T4SN1F0M46

RE10M25W4SN1KWM41

RE10M25W4SN1XWM41

RE10R35T4SN1F046

RE10M25T4SN1R046

RE10R35W1SN1XWM41

RE10R17T4SN1R0M46

RE10M17T4SN1R046

RE10M35W4SN1KWM41

RE10M35W1SN1XWM41

RE10M35W1SV1KWM41

RE10R35T1SN1F046

RE10M10T4SN1R046

RE10R25W1SN1KW41

RE10R35W4SN1KW41

RE10M25T1SN1R046

RE10M17W1SN1XWM41

RE10R35T1SN1F0M46

RE10M10W4SN1KWM41

RE10M10W4SN1XWM41

RE10R17W1SN1XW41

RE10R17T4SN1F0M46

RE10M17W4SN1KWM41

RE10M10W1SN1KWM41

RE10M25T1SN1F0M46

RE10R25W1SN1XWM41

RE10R17W4SN1XW41

RE10R35W1SN1KW41

RE10R35W1SN1KWM41

RE10R10W4SN1KW41

RE10R35T4SN1F0M46

RE10R35W4SN1KWM41

RE10M35W4SV1XWM41

RE10R25T1SN1F046

RE10R17T1SN1F0M46

RE10M25T4SN1F0M46

RE10R10W4SV1KWM41

RE16E17W1SN1XW

RE16E25T1SN1F0

RE16E25W1SN1XWM

RE16E35T1SN1F0

RE16E10T1SN1F0M

RE16E35W1SN1XW

RE16E17T1SN1R0

RE16E17W1SN1XW25

RE16E25T1SN1F021

RE16E25W1SN1XWM25

RE16E35T1SN1F021

RE16E10T1SN1F0M21

RE16E35W1SN1XW25

RE16E17T1SN1R021

RE25M17W4SN1XWM

RE25M35W4SN1KWM

RE25E17W1SN1XW

RE25E35W1SN1KWM

RE25M25T4SN1F0

RE25M35T4SN1F0M

RE25M25W4SN1XWM

RE25M25W4SN1KWM

RE25R35T4SN1F0M

RE25R35T4SN1F0

RE25R35W4SN1XWM

RE25R35W4SN1KW

RE25M35T4SV1F0M

RE25E25W1SN1KW

RE25M17W1SN1XWM

RE25R35W1SN1XWM

RE25M35W4SN1XWM

RE25R25W1SN1KW

RE25R25W1SN1XW

RE25M35W1SN1XWM

RE25M35W1SV1KWM

RE25M10W4SN1XWM

RE25R35W4SN1KWM

RE25E25W1SN1XWM

RE25R25W1SN1XWM

RE25E35W1SN1XW

RE25M10W4SN1KWM

RE25M25W1SN1XWM

RE25M17W1SN1KWM

SK-RE25MN40

RE25R35W1SN1KW

RE25R35T1SN1R0

RE25M25T1SV1F0M

RE25M35T4SN1R0M

RE25M17T4SN1F0

RE25R35T1SN1F0M

RE25M17W4SN1KWM

RE25R35T1SN1R0M

RE25E25W1SV1XW

RE25E35T1SN1F0M

RE25R10W4SV1KWM

RE25R17T1SN1F0M

RE25M17W4SN1XWM41

RE25M35W4SN1KWM41

RE25E17W1SN1XW25

RE25E35W1SN1KWM25

RE25M25T4SN1F046

RE25M35T4SN1F0M46

RE25M25W4SN1XWM41

RE25M25W4SN1KWM41

RE25R35T4SN1F0M46

RE25R35T4SN1F046

RE25R35W4SN1XWM41

RE25R35W4SN1KW41

RE25M35T4SV1F0M46

RE25E25W1SN1KW25

RE25M17W1SN1XWM41

RE25R35W1SN1XWM41

RE25M35W4SN1XWM41

RE25R25W1SN1KW41

RE25R25W1SN1XW41

RE25M35W1SN1XWM41

RE25M35W1SV1KWM41

RE25M10W4SN1XWM40

RE25R35W4SN1KWM41

RE25E25W1SN1XWM25

RE25R25W1SN1XWM41

RE25E35W1SN1XW25

RE25M10W4SN1KWM40

RE25M25W1SN1XWM41

RE25M17W1SN1KWM41

SK-RE25MT/WN40/41

RE25R35W1SN1KW41

RE25R35T1SN1R046

RE25M25T1SV1F0M46

RE25M35T4SN1R0M46

RE25M17T4SN1F046

RE25R35T1SN1F0M46

RE25M17W4SN1KWM41

RE25R35T1SN1R0M46

RE25E25W1SV1XW25

RE25E25T1SN1F0M21

RE25R10W4SV1KWM41

RE25R17T1SN1F0M46

RS10M17L4SN1JW

RS10M17T4SN1JW

RS10M25S1SN1JW

RS10M35T4SN1JW

RS10M35T4SN1JWS

RS10R17T4SN1JW

RS10R25T4SN1YW

RS10R25T4SN9JW

RS10R35T4SN1JW

RS10R35T4SN9JW

RS25M07T4SN1JW

RS25M25T4SN1JW

RS25M35T4SN1JW

RS25M35T4SN1UW

RS25M35T4SN9JW

RS25R17T4SN1JW

RS25R25T4SN1JW

RS25R25T4SN1UW

RS25R25T4SN1YW

RS25R25T4SN9JW

RS25R35T4SN1GW

RE10R17T4SN1G0M46

RS10M17L4SN1JW40

RS10M17T4SN1JW40

RS10M25S1SN1JW40

RS10M35T4SN1JW40

RS10M35T4SN1JWT40

RS10R17T4SN1JW40

RS10R25T4SN1YW45

RS10R25T4SN9JW40

RS10R35T4SN1JW40

RS10R35T4SN9JW40

RS25M07T4SN1JW40

RS25M25T4SN1JW40

RS25M35T4SN1JW40

RS25M35T4SN1UW40

RS25M35T4SN9JW40

RS25R17T4SN1JW40

RS25R25T4SN1JW40

RS25R25T4SN1UW40

RS25R25T4SN1YW40

RS25R25T4SN9JW40

RS25R35T4SN1GW40

RE10R17T4SN1G0M

RS10M17L4SN1JW

RS10M17S4SN1JW

RS10M25S1SN1JW

RS10M35S4SN1JW

RS10M35S4SN1JWS

RS10R17S4SN1JW

RS10R25S4SN1YW

RS10R25S4SN9JW

RS10R35S4SN1JW

RS10R35S4SN9JW

RS25M07S4SN1JW

RS25M25S4SN1JW

RS25M35S4SN1JW

RS25M35S4SN1UW

RS25M35S4SN9JW

RS25R17S4SN1JW

RS25R25S4SN1JW

RS25R25S4SN1UW

RS25R25S4SN1YW

RS25R25S4SN9JW

RS25R35S4SN1GW

RE10R17T4SN1G0M46

RS10M17L4SN1JW40

RS10M17S4SN1JW40

RS10M25S1SN1JW40

RS10M35S4SN1JW40

RS10M35S4SN1JWS40

RS10R17S4SN1JW40

RS10R25S4SN1YW45

RS10R25S4SN9JW40

RS10R35S4SN1JW40

RS10R35S4SN9JW40

RS25M07S4SN1JW40

RS25M25S4SN1JW40

RS25M35S4SN1JW40

RS25M35S4SN1UW40

RS25M35S4SN9JW40

RS25R17S4SN1JW40

RS25R25S4SN1JW40

RS25R25S4SN1UW40

RS25R25S4SN1YW40

RS25R25S4SN9JW40

RS25R35S4SN1GW40

DSDU1078E16E

DSDU1078E16G TUEV F230 230 BAR

DSDU1078E16G TUEV F215 190 BAR

DSDU578P20G TUEV F300 200BAR

DSDU578P20G TUEV F300 180BAR

DSDU578P20K TUEV F370 330BAR

DSDU578P20G TUEV F300 190BAR

DSDU578P20G TUEV F320 230BAR

DSDU578P20G TUEV F320 210BAR

DSDU578P20K TUEV F370 315BAR

DSDU1078E25G TUEV F355 250BAR

DSDU1072E25K

DSDU1078E25E

DSDU1078E25G TUEV F235 90BAR

DSDU1078E32GX672 TUEV F800250B

DSDU1078E32K TUEV F900 280BAR

DSDU1078E32G TUEV F800 240BAR

DSDU1078E32E TUEV F500 70BAR

DSDU1078E32K TUEV F950 315BAR

DSDU1078E32G TUEV F750 200BAR

DSDU1078E16K TUEV F280 315 BAR

DSDU1078E32K TUEV F950 330BAR

DSDU578P20K TUEV F370 350BAR

DSDU1078E32E TUEV F640 130BAR

DSDU1078E32G

DSDU1078E32G

DSDU1078E25G TUEV F310 190BAR

DSDU578P20E TUEV F240 110BAR

DSDU1072E25G

DSDU1072E25G

DSDU1072E32G

DSDU1072E32G

DSDU1078E25K TUEV F390 280BAR

DSDU1078E32E TUEV F640 160BAR

DSDU1078E32E TUEV F550 80BAR

DSDU1078E25G TUEV F355 210BAR

DSDU1078E32K TUEV F950 350BAR

DSDU1078E16K TUEV F280 350 BAR

DSDU1078E32G14121506 (120 BAR)

DSDU1078E16G TUEV F230 250 BAR

DSDU1078E32G TUEV F750 180BAR

SK-DSDU10E32

SK-DSDU10-E32

DSDU578P20E TUEV F265 160BAR

DSDU1078E32K TUEV F900 300BAR

DSDU1072E32K

DSDU1072E32K

DSDU1078E32G TUEV F800 250BAR

DSDU1078E25K TUEV F400 350BAR

DSDU1072E25E

DSDU1072E25E

DSDU1072E16K

DSDU1072E16K

DSDU1078E32E TUEV F500 50BAR

DSDU1078E25K

DSDU1078E25K

DSDU578P20E TUEV F240 120BAR

DSDU1078E16G TUEV F215 200 BAR

派克溢流閥DSDU1072E16K上海一級供應(yīng)商