上海韦米机电设备有限公司

DB10-2-5X/200力士乐溢流阀

先导控制溢流阀

DB

规格 10 … 32

组件系列 5X

较大工作压力 350 bar

较大流量 650 l/min

DB 型压力阀是一种先导式溢流阀。用于限制工作压力。

这些溢流阀 (DB) 主要由带主阀心 (3) 的主阀 (1) 以及带压力调节元件的先导控制阀 (2) 组成。

施加在通道 P 中的压力作用于主阀芯 (3)。同时，该压力通过配有喷嘴 (4) 和 (5) 的控制油路 (6) 和 (7) 施加于主阀芯 (3) 的弹簧负载侧和先导控制阀 (2) 中的滚珠 (8)。如果通道 P 中的压力超过弹簧 (9) 上设定的值，则滚珠 (8) 将背向弹簧 (9) 打开。相应的信号通过控制油路 (10) 和 (6) 从通道 P 由内部传出。此时主阀芯 (3) 弹簧负载侧的液压油通过控制油路 (7)、喷嘴孔 (11) 和滚珠 (8) 流入弹簧腔 (12)。从此处，液压油通过控制油路 (13) 从内部流入油箱（对于型号 DB …），或通过控制油路 (14) 从外部流入油箱（对于型号 DB …Y）。喷嘴 (4) 和 (5) 会导致主阀芯 (3) 出现压降，从而使通道 P 到通道 T 的连接打开。现在，液压油从通道 P 流到通道 T，同时维持设定的工作压力。

溢流阀可通过油口“X”(15) 卸载或切换为另一压力（第二个压力等级）。

DB10-2-5X/200力士乐溢流阀型号

R900502906 DB10-.-5X/...

R900589262 DB10-.-5X/...U

R900597664 DB10-1-5X/100

R900781638 DB10-1-5X/100-035

R900508964 DB10-1-5X/100/12

R900503252 DB10-1-5X/100B

R900509085 DB10-1-5X/100U

R900617361 DB10-1-5X/100UV

R900511818 DB10-1-5X/100UV/12

R900597559 DB10-1-5X/100V

R901437605 DB10-1-5X/100VD

R901437497 DB10-1-5X/100VE

R900597689 DB10-1-5X/100X

R900533537 DB10-1-5X/100XU

R900548642 DB10-1-5X/100XU/12

R900507611 DB10-1-5X/100XY

R900533385 DB10-1-5X/100XYU

R900500038 DB10-1-5X/100Y

R900512764 DB10-1-5X/100YU

R900975659 DB10-1-5X/160B

R901081480 DB10-1-5X/160X

R900505052 DB10-1-5X/200

R900976226 DB10-1-5X/200/12

R900500011 DB10-1-5X/200B

R901215241 DB10-1-5X/200D

R901257074 DB10-1-5X/200E

R900512518 DB10-1-5X/200U

R900764368 DB10-1-5X/200V

R900536231 DB10-1-5X/200X

R901273808 DB10-1-5X/200XU

R901192055 DB10-1-5X/200XV

R900533812 DB10-1-5X/200XY

R900547023 DB10-1-5X/200Y

R900975792 DB10-1-5X/200Y/12

R901179918 DB10-1-5X/200YU

R901215197 DB10-1-5X/210E

R901102372 DB10-1-5X/220E

R900576022 DB10-1-5X/220XB

R901115994 DB10-1-5X/220YE

R901096704 DB10-1-5X/235E

R901182179 DB10-1-5X/250E

R900546359 DB10-1-5X/290B

R901108157 DB10-1-5X/290E

R900598998 DB10-1-5X/315

R900526055 DB10-1-5X/315B

R901341310 DB10-1-5X/315E

R900537021 DB10-1-5X/315U

R900533859 DB10-1-5X/315U/12

R900514011 DB10-1-5X/315V

R900596114 DB10-1-5X/315X

R900505710 DB10-1-5X/315X/12

R900506303 DB10-1-5X/315XB

R900919397 DB10-1-5X/315XU

R900534282 DB10-1-5X/315XY

R900510403 DB10-1-5X/315XYB

R900507306 DB10-1-5X/315XYV

R900513586 DB10-1-5X/315Y

R900547295 DB10-1-5X/315Y/12

R900519053 DB10-1-5X/315YB

R900593794 DB10-1-5X/350

R900781637 DB10-1-5X/350-220

R901096868 DB10-1-5X/350D

R900920949 DB10-1-5X/350V

R900508274 DB10-1-5X/350X

R900579925 DB10-1-5X/350Y

R901116182 DB10-1-5X/350YD

R900597665 DB10-1-5X/50

R900529006 DB10-1-5X/50U

R900781133 DB10-1-5X/50V

R900926944 DB10-1-5X/50XY

R901004651 DB10-1-5X/50XYU

R900573342 DB10-1-5X/50Y

R900780054 DB10-1-5X/50YU

R900590646 DB10-2-5X/100

R900597083 DB10-2-5X/100SO184

R900535030 DB10-2-5X/100/12

R900517467 DB10-2-5X/100B

R901014645 DB10-2-5X/100D

R900773341 DB10-2-5X/100E

R901034003 DB10-2-5X/100P55Y

R900593839 DB10-2-5X/100U

R900562090 DB10-2-5X/100U/12

R900933729 DB10-2-5X/100UV

R900507503 DB10-2-5X/100V

R901004433 DB10-2-5X/100V/12

R900514760 DB10-2-5X/100VB

R901321953 DB10-2-5X/100VD

R900596930 DB10-2-5X/100X

R900739443 DB10-2-5X/100X/12

R900516785 DB10-2-5X/100XU

R900561319 DB10-2-5X/100XUV

R900909218 DB10-2-5X/100XV

R900596738 DB10-2-5X/100XY

R900556115 DB10-2-5X/100XY/12

R900532526 DB10-2-5X/100XYU

R900515149 DB10-2-5X/100XYV

R900595739 DB10-2-5X/100Y

R900787944 DB10-2-5X/100YD

R900787139 DB10-2-5X/100YE

R900513648 DB10-2-5X/100YU

R978026483 DB10-2-5X/100YU/12

R900519210 DB10-2-5X/100YUV

R900509059 DB10-2-5X/100YV

R900748673 DB10-2-5X/100YV/12

R900546294 DB10-2-5X/120B

R901054783 DB10-2-5X/120E

R901338932 DB10-2-5X/120YE

R900723738 DB10-2-5X/130B

R900618575 DB10-2-5X/140B

R900546295 DB10-2-5X/150B

R901390927 DB10-2-5X/150E

R900770687 DB10-2-5X/150XE

R900713681 DB10-2-5X/150YB

R901005290 DB10-2-5X/150YE

R901066860 DB10-2-5X/155E

R900546296 DB10-2-5X/160B

R900769556 DB10-2-5X/160E

R901005411 DB10-2-5X/160YE

R900546297 DB10-2-5X/170B

R901292202 DB10-2-5X/175E

R900546298 DB10-2-5X/180B

R901353262 DB10-2-5X/180E

R901339044 DB10-2-5X/185E

R900769409 DB10-2-5X/190E

R901338931 DB10-2-5X/190YE

R900587772 DB10-2-5X/200

R900781634 DB10-2-5X/200-105

R901122078 DB10-2-5X/200-115

R901121950 DB10-2-5X/200-120

R901253827 DB10-2-5X/200-160

R900931975 DB10-2-5X/200-165

R901049523 DB10-2-5X/200-170

R900535928 DB10-2-5X/200/12

R900911336 DB10-2-5X/200/50

R900558854 DB10-2-5X/200=LB

R900599323 DB10-2-5X/200B

R901013095 DB10-2-5X/200D

R901021955 DB10-2-5X/200E

R901282967 DB10-2-5X/200P120U

R901077617 DB10-2-5X/200P160

R901011411 DB10-2-5X/200U

R900502649 DB10-2-5X/200V

R900247148 DB10-2-5X/200V/12

R900947642 DB10-2-5X/200VB

R900595345 DB10-2-5X/200X

R900968799 DB10-2-5X/200XU

R900701467 DB10-2-5X/200XV

R900509086 DB10-2-5X/200XY

R900781733 DB10-2-5X/200XY/12

R900599380 DB10-2-5X/200Y

R901078455 DB10-2-5X/200Y/12

R901000091 DB10-2-5X/200YD

R900533538 DB10-2-5X/200YU

R900528384 DB10-2-5X/200YV

R900940658 DB10-2-5X/200YV/12

R900546360 DB10-2-5X/210B

R900769420 DB10-2-5X/210E

R900546361 DB10-2-5X/210YB

R901358841 DB10-2-5X/210YE

R900577262 DB10-2-5X/220B

R900769498 DB10-2-5X/220E

R901005286 DB10-2-5X/220YE

R901041986 DB10-2-5X/230E

R901383594 DB10-2-5X/235E

R900546362 DB10-2-5X/250B

R900768627 DB10-2-5X/250E

R900788114 DB10-2-5X/250YE

R901205176 DB10-2-5X/270E

R900944626 DB10-2-5X/270XB

R901086648 DB10-2-5X/285YE

R900944628 DB10-2-5X/295XB

R901309059 DB10-2-5X/300E

R901281680 DB10-2-5X/305YE

R900590334 DB10-2-5X/315

R900719054 DB10-2-5X/315-210

R900707943 DB10-2-5X/315-230

R900780197 DB10-2-5X/315-250

R900904527 DB10-2-5X/315-250X

R900733353 DB10-2-5X/315-280

R900535929 DB10-2-5X/315/12

R900596626 DB10-2-5X/315B

R901000654 DB10-2-5X/315E

R900513845 DB10-2-5X/315J3

R900949638 DB10-2-5X/315P305X

R901053153 DB10-2-5X/315P315

R900593840 DB10-2-5X/315U

R900535666 DB10-2-5X/315U/12

R900573198 DB10-2-5X/315UB

R900562297 DB10-2-5X/315UV

R978871415 DB10-2-5X/315UV/12

R900505883 DB10-2-5X/315V

R900546662 DB10-2-5X/315V/12

R900516389 DB10-2-5X/315VB

R900591126 DB10-2-5X/315X

R900758397 DB10-2-5X/315XB

R900526496 DB10-2-5X/315XU

R900536877 DB10-2-5X/315XU/12

R900567750 DB10-2-5X/315XUV

R900599205 DB10-2-5X/315XV

R900597590 DB10-2-5X/315XY

R901152542 DB10-2-5X/315XYU

R901160806 DB10-2-5X/315XYV

R900597313 DB10-2-5X/315Y

R901009611 DB10-2-5X/315Y/12

R900597445 DB10-2-5X/315YB

R901000073 DB10-2-5X/315YE

R900513599 DB10-2-5X/315YU

R900716465 DB10-2-5X/315YU/12

R900708265 DB10-2-5X/315YV

R901139839 DB10-2-5X/315YV/12

R901358843 DB10-2-5X/320YE

R900546363 DB10-2-5X/325B

R901414214 DB10-2-5X/325E

R901003351 DB10-2-5X/325YE

R900546364 DB10-2-5X/330B

R901042253 DB10-2-5X/330E

R900546365 DB10-2-5X/330VB

R900729299 DB10-2-5X/340VB

R900773257 DB10-2-5X/340VE

R900597992 DB10-2-5X/350

R901079887 DB10-2-5X/350-170

R901008762 DB10-2-5X/350-205

R900781636 DB10-2-5X/350-245

R901312538 DB10-2-5X/350-250

R901095755 DB10-2-5X/350-270

R901050554 DB10-2-5X/350-285

R901049522 DB10-2-5X/350-295

R901292436 DB10-2-5X/350-295X

R901208873 DB10-2-5X/350-300

R901104330 DB10-2-5X/350-320

R901065086 DB10-2-5X/350-330

R901217381 DB10-2-5X/350-350

R900534005 DB10-2-5X/350/12

R900558855 DB10-2-5X/350=LB

R900705356 DB10-2-5X/350B

R901003408 DB10-2-5X/350D

R901070345 DB10-2-5X/350E

R901093524 DB10-2-5X/350P350

R900249511 DB10-2-5X/350V

R901020317 DB10-2-5X/350VD

R900501045 DB10-2-5X/350X

R901094599 DB10-2-5X/350X./12

R901052268 DB10-2-5X/350XU

R901246914 DB10-2-5X/350XV

R900511665 DB10-2-5X/350XY

R901056913 DB10-2-5X/350XY/12

R900548408 DB10-2-5X/350XYU

R900597420 DB10-2-5X/350Y

R900778197 DB10-2-5X/350Y/12

R900788117 DB10-2-5X/350YD

R901317058 DB10-2-5X/350YE

R900500117 DB10-2-5X/350YV

R900546291 DB10-2-5X/40B

R901048715 DB10-2-5X/40E

R900590645 DB10-2-5X/50

R900951239 DB10-2-5X/50-15XV

R900911082 DB10-2-5X/50-30

R900535930 DB10-2-5X/50/12

R900929814 DB10-2-5X/50B

R901022588 DB10-2-5X/50D

R901034001 DB10-2-5X/50E

R901251515 DB10-2-5X/50P20

R900725852 DB10-2-5X/50P25

R900961072 DB10-2-5X/50P30

R900579303 DB10-2-5X/50U

R901444731 DB10-2-5X/50U/12

R900703457 DB10-2-5X/50UV

R900598054 DB10-2-5X/50V

R900511831 DB10-2-5X/50X

R900536300 DB10-2-5X/50XU

R900508332 DB10-2-5X/50XV

R900734775 DB10-2-5X/50XY

R900976222 DB10-2-5X/50XY/12

R900516068 DB10-2-5X/50XYU

R900597342 DB10-2-5X/50Y

R900921126 DB10-2-5X/50Y/12

R900509825 DB10-2-5X/50YU

R900774148 DB10-2-5X/50YV

R978012490 DB10-2-5X/50YV/12

R901321941 DB10-2-5X/70VE

R901215690 DB10-2-5X/80E

R900546292 DB10-2-5X/80VB

R900596563 DB10-3-5X/100

R900522567 DB10-3-5X/100U

R900563388 DB10-3-5X/100UV

R900502262 DB10-3-5X/100V

R900513752 DB10-3-5X/100X

R900937809 DB10-3-5X/100XV

R900515045 DB10-3-5X/100XY

R900596562 DB10-3-5X/100Y

R901041651 DB10-3-5X/100YU

R900594773 DB10-3-5X/200

R900923108 DB10-3-5X/200/12

R900975411 DB10-3-5X/200V

R900502039 DB10-3-5X/200X

R900599133 DB10-3-5X/200X/12

R900573811 DB10-3-5X/200XYU

R900503544 DB10-3-5X/200Y

R900594604 DB10-3-5X/315

R900532300 DB10-3-5X/315U

R901437200 DB10-3-5X/315V

R900505157 DB10-3-5X/315X

R900772004 DB10-3-5X/315XU

R900618979 DB10-3-5X/315XV

R900523864 DB10-3-5X/315XY

R900503637 DB10-3-5X/315Y

R900907113 DB10-3-5X/315YU

R901096727 DB10-3-5X/315YV

R900510623 DB10-3-5X/350

R901183613 DB10-3-5X/350X

R900528385 DB10-3-5X/350Y

R900503083 DB10-3-5X/50

R900903174 DB10-3-5X/50U

R900941383 DB10-3-5X/50UV

R900920195 DB10-3-5X/50V

R901179393 DB10-3-5X/50Y

R900503664 DB10-3-5X/50YU

R901081472 DB10-4-5X/160X

R901081460 DB10-4-5X/160XM

R901108812 DB10-4-5X/160XV

R901081470 DB10-4-5X/160XY

R901081463 DB10-4-5X/160XYM

R900942504 DB10-4-5X/200/12

R900570788 DB10-4-5X/315

R901074977 DB10-4-5X/315XM

R901074983 DB10-4-5X/315XY

R901074980 DB10-4-5X/315XYM

R901081475 DB10-4-5X/80XY

R900501718 DB10-5-5X/100Y

R900771421 DB10-5-5X/200

R900569354 DB10-5-5X/200Y

R900506776 DB10-5-5X/315

R900946813 DB10-5-5X/315XU

R900553535 DB10-5-5X/315Y

R900961810 DB10-5-5X/315YV/12

R900904664 DB10-5-5X/50Y

R901281947 DB10-5-5X/50YV

R900743901 DB10-6-5X/100X

R900598831 DB10-6-5X/315

R900906018 DB10-7-5X/100

R901149028 DB10-7-5X/100V

R900961076 DB10-7-5X/100XY

R900769126 DB10-7-5X/100Y

R900529920 DB10-7-5X/200

R901146523 DB10-7-5X/200UV

R901422595 DB10-7-5X/200XY

R900546636 DB10-7-5X/315

R900730624 DB10-7-5X/315U

R901110223 DB10-7-5X/315V

R900930480 DB10-7-5X/315X

R901095396 DB10-7-5X/315Y

R901389473 DB10-7-5X/315YV

R901020886 DB10-7-5X/350

R900245018 DB10-7-5X/350U

R901364866 DB10-7-5X/350X

R900551708 DB10-7-5X/50

R901021927 DB10-7-5X/50U

R900503184 DB15G.-5X/...

R900503589 DB15G1-5X/100

R900519478 DB15G1-5X/200

R900511567 DB15G1-5X/200/12

R901178652 DB15G1-5X/200V

R901127361 DB15G1-5X/200XUV

R901337919 DB15G1-5X/200Y/12

R900509865 DB15G1-5X/315

R901409415 DB15G1-5X/315V

R900513493 DB15G1-5X/315V/12

安全阀又称溢流阀。安全阀顾名思义是保证压力管道、压力容器的关键安全应用保障，为了保证安全阀的正常工作及延长安全阀的使用寿命，在使用中应做到定期检查运行中的安全阀是否泄漏，卡阻及弹簧锈蚀等不正常现象，并注意观察调节螺套及调节圈紧定螺钉的锁紧螺母是否有松动，若发现问题及时采取适当的维护措施。还应定期将安全阀拆下进行一体清洗、检查并重新研磨、整定后方可重新使用。安装在室外的安全阀要采取适当的防护措施，以防止雨、雾、尘埃、锈污等 脏物 侵入安全阀及排放管道，当环境低于摄氏零度时，还应采取必要的防冻措施以保证安全阀动作的可靠性 [1]  。

分类及参数

安全溢流阀有弹簧式和杆式两大类。另外还有冲量式安全阀、先导式安全阀、安全切换阀、安全解压阀、静重式安全阀等。弹簧式安全阀主要依靠弹簧的作用力而工作，弹簧式安全阀中又有封闭和不封闭的，一般易燃、易爆或有毒的介质应选用封闭式，蒸汽或惰性气体等可以选用不封闭式，在弹簧式安全阀中还有带扳手和不带扳手的。扳手的作用主要是检查阀瓣的灵活程度，有时也可以用作手动紧急泄压用。杠杆式安全阀主要依靠杠杆重锤的作用力而工作，但由于杠杆式安全阀体积庞大往往限制了选用范围。温度较高时选用带散热器的安全阀。

安全溢流阀的主要参数是排量，这个排量决定于阀座的口径和阀瓣的开启高度，由开启高度不同，又分为微启式和全启式两种。微启式是指阀瓣的开启高度为阀座喉径的1/40～1/20。全启式是指阀瓣的开启高度为阀座喉径的1/4 [1]  。

选用

由操作压力决定安全阀的公称压力，由操作温度决定安全阀的使用温度范围，由计算出的安全阀的定压值决定弹簧或杠杆的定压范围，再根据使用介质决定安全阀的材质和结构型式，再根据安全阀泄放量计算出安全阀的喉径。以下为安全阀选用的一般规则。

（1）热水锅炉一般用不封闭带扳手微启式安全阀。

（2）蒸汽锅炉或蒸汽管道一般用不封闭带扳手全启式安全阀。

（3）水等液体不可压缩介质一般用封闭微启式安全阀，或用安全泄放阀。

（4）高压给水一般用封闭全启式安全阀，如高压给水加热器、换热器等。

（5）气体等可压缩性介质一般用封闭全启式安全阀，如储气罐、气体管道等。

（6）E级蒸汽锅炉一般用静重式安全阀。

（7）大口径，大排量及高压系统一般用脉冲式安全阀，如减温减压装置、电站锅炉等。

（8）运送液化气的火车槽车、汽车槽车、贮罐等一般用内装式安全阀。

（9）油罐顶部一般用液压安全阀，需与呼吸阀配合使用。

（10）井下排水或天然气管道一般用先导式安全阀。

（11）液化石油气站罐泵出口的液相回流管道上一般用安全回流阀。

（12）负压或操作过程中可能会产生负压的系统一般用真空负压安全阀。

（13）背压波动较大和有毒易燃的容器或管路系统一般用波纹管安全阀