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HENRYD液压换向电磁阀4WE6J61/EG24N9Z5L 4WE6E/CW220N9Z5L G D H

发布日期:2024/10/8浏览次数:55

HENRYD液压换向电磁阀4WE6J61/EG24N9Z5L 4WE6E/CW220N9Z5L G D H

液压系统双联叶片泵损坏原因与分析

某液压系统双联叶片泵的性能参数:压力70kg/cm2,流量148L/min、112L/min。该泵在运行十几年后,压力下降,噪声增大,吸不上油,无法正常运行,而换上的新泵使用不到一年就出现同样的故障。爲何会这样?

(一)原液压泵解剖现象及损坏原因分析

将损坏的液压泵进行解剖,发现定子曲线内表面严重磨损(见图2)。定子由合金钢制成,其内表面由四段圆弧及四段过渡曲线组成,滑道曲面经硬化处理(渗碳或氮化)并磨光,以承受叶片端部的滑磨及接触应力。叶片由热处理后具有高硬度的钢材制成,其与滑道接触的一端通常制成光滑的圆角。解剖发现排油区AB、EF两段弧磨损最爲严重,已磨出沟槽,叶片前端(与定子接触端)有摩擦亮痕。

由图2知排油区爲AB、EF,吸油区爲CD、GH(按叶片转动方向)。在排油区,叶片根部通有液压油,以保证叶片顶部与定子内表面可靠接触,从叶片径向运动看,叶片在AB、EF、CD、GH四段有径向加速度存在,在此圆弧与过渡曲线相连点(即A、B、C、D、E、F、G、H点)处有径向速度突变,不同程度存在柔性冲击,如果液压泵吸、排油不畅,吸空断油,将导緻润滑油膜发生破坏而産生干摩擦,若无介质将摩擦産生的热量带走,液压泵将出现内洩增加、压力下降、气穴、噪声等故障现象的恶性循环而榀坏液压泵。

葉片泵工作原理圖


同时,该液压泵吸油不畅,緻使叶片与定子内表面接触油膜发生了破坏,相对滑动面形成了强烈干摩擦,AB、EF两端排油区尤爲严重,産生了大量的热量且无法及时散开(液压泵外壳烫手),緻使油温剧升,从而使叶片与定子接触表面软化,黏结撕裂而形成沟槽,恶性循环的结果导緻液压泵内洩增加、排量减少、气穴,而産生噪声、压力下降及不能满足设备正常运行的使用要求。

该机主液压系统有4台主液压泵、4台供油液压泵和该叶片泵安装在高位放置的油箱上,因而油箱上振动较大,造成叶片泵径向力增加,破坏了径向力平衡和叶片与定子曲面的油膜密封。另一方面,油冷却器的冷却性能降低,相对地增加油箱散热效果,因而隻将油箱内的液压油添加到略高于最低油位。关键的原因是叶片泵本身吸油能力较差,再降低液面緻使叶片泵的吸油发生吸空,吸油腔已産生严重负压导緻气穴现象而産生气泡,气泡的存在使叶片与定子之间失去保护油膜,介质不足使叶片的径向力平衡状态发生改变、摩擦加剧、噪声增大、産生热量,这种恶性循环的结果进一步使吸排油完全中断,损坏液压泵。

SVPF-20-35 SVPF-20-55 SVPF-20-70 SVPF-30-35 SVPF-30-55 SVPF-30-70 SVPF-40-35 SVPF-40-55 SVPF-40-70 SVPF-15-35 SVPF-15-55 SVPF-15-70  SVPF-15-35-20 SVPF-15-55-20 SVPF-15-70-20 SVPF-20-35-20 SVPF-20-55-20 SVPF-20-70-20 SVPF-30-35-20 SVPF-30-55-20 SVPF-30-70-20 SVPF-40-35-20 SVPF-40-55-20 SVPF-40-70-20
HG0-08-01R-VPC HG0-10-01R-VPC HG0-13-01R-VPC HG0-16-01R-VPC HG0-20-01R-VPC HG1-25-01R-VPC-36 HG1-32-01R-VPC-36 HG1-40-01R-VPC-36 HG1-50-01R-VPC-36 HG1-63-01R-VPC-36 HG2-80-01R-VPC-36 HG2-100-01R-VPC-36 HG2-125-01R-VPC-36 HG2-145-01R-VPC-36 HG2-160-01R-VPC-36
VPVC-F12-A1-02A/03A/04A VPVC-F12-A2-02A/03A/04A VPVC-F12-A3-02A/03A/04A VPVC-F12-A4-02A/03A/04A VPVC-F20-A1-02A/03A/04A VPVC-F20-A2-02A/03A/04A VPVC-F20-A3-02A/03A/04A VPVC-F20-A4-02A/03A/04A VPVC-F30-A1-02A/03A/04A VPVC-F30-A2-02A/03A/04A VPVC-F30-A3-02A/03A/04A VPVC-F30-A4-02A/03A/04A VPVC-F40-A1-02A/03A/04A VPVC-F40-A2-02A/03A/04A VPVC-F40-A3-02A/03A/04A VPVC-F40-A4-02A/03A/04A
VP-08-F/A3  VP-12-F/A3 VP-15-F/A3  VP-20-F/A3  VP-30-F/A3  VP-40-F/A3  VP-20-20-FA3 VP-40-40FA3  VUP-16  VP20-FA3 VP20-FA3 VP20-FA3 VP20-FA3  VP08-FA3  VP15-FA3 VP15-FA3 VP12-FA3 VP12-FA3 VP30-FA3 VP40-FA3 VP30-FA3 VP40-FA3 VP20-20-FA3  VP30-30-FA3  VP40-40-FA3  VP15-FA3 VP15-FA3 VUP-16 VP-30+PA VP-40+PA  VP45-FA3  VP12-FA3 VP12-FA3 HVP-30 14MPA  HVP-40 14MPA
PV2R1-6-F-1R-U-10 PV2R1-8-F-1R-U-10 PV2R1-10-F-1R-U-10 PV2R1-14-F-1R-U-10 PV2R1-17-F-1R-U-10 PV2R1-19-F-1R-U-10 PV2R1-23-F-1R-U-10 PV2R1-25-F-1R-U-10 PV2R1-28-F-1R-U-10 PV2R1-31-F-1R-U-10 PVL1-6-F-1R-U-10 PVL1-8-F-1R-U-10 PVL1-10-F-1R-U-10 PVL1-14-F-1R-U-10 PVL1-17-F-1R-U-10 PVL1-19-F-1R-U-10 PVL1-23-F-1R-U-10 PVL1-25-F-1R-U-10 PVL1-28-F-1R-U-10 PVL1-31-F-1R-U-10
PV2R1-6-F-R PV2R1-8-F-R PV2R1-10-F-R PV2R1-12-F-R PV2R1-14-F-R PV2R1-17-F-R PV2R1-19-F-R PV2R1-21-F-R PV2R1-23-F-R PV2R1-25-F-R PV2R1-28-F-R PV2R1-31-F-R PV2R1-33-F-R PV2R2-23 PV2R2-26 PV2R2-33 PV2R2-41 PV2R2-47 PV2R2-53 PV2R2-59 PV2R2-65
PV2R2-75 PV2R2-31   PV2R1-4RAF1  PV2R1-6RAF1  PV2R1-8RAF1  PV2R1-10RAF1  PV2R1-12RAF1  PV2R1-14RAF1  PV2R1-17RAF1  PV2R1-19RAF1  PV2R1-23RAF1  PV2R1-25RAF1  PV2R1-28RAF1  PV2R1-31RAF1
PV2R1-6-FR   PV2R1-8-FR   PV2R1-10-FR PV2R1-12-FR   PV2R1-14-FR   PV2R1-17-FR   PV2R1-19-FR   PV2R1-21-FR   PV2R1-23-FR   PV2R1-25-FR   PV2R1-28-FR   PV2R1-31-FR  PV2R1-4-FR 
PV2R1-6 PV2R1-8 PV2R1-10 PV2R1-12 PV2R1-14 PV2R1-17 PV2R1-19 PV2R1-23 PV2R1-25 PV2R1-28 PV2R1-31
PV2R24-41-136-F-REAA-41 PV2R24-47-184-F-REAA-41 PV2R24-53-184-F-REAA-41 PV2R24-59-153-F-REAA-41 PV2R24-65-237-F-REAA-41 PV2R24-75-200-F-REAA-41 PV2R24-47-153-F-REAA-41 PV2R24-65-200-F-REAA-41 PV2R24-53-136-F-REAA-41
PV2R34-76-153-F-REAA-41 PV2R34-85-184-F-REAA-41 PV2R34-94-136-F-REAA-41 PV2R34-108-184-F-REAA-41 PV2R34-116-200-F-REAA-41 PV2R34-125-237-F-REAA-41 PV2R34-76-136-F-REAA-41 PV2R34-94-184-F-REAA-41 PV2R34-85-200-F-REAA-41
PV2R12-25-33 PV2R12-25-41 PV2R12-25-47 PV2R12-25-53 PV2R12-25-59 PV2R12-25-65 PV2R12-25-75 PV2R12-28-33 PV2R12-28-41 PV2R12-28-47 PV2R12-28-53 PV2R12-28-59 PV2R12-28-65 PV2R12-28-75 PV2R12-31-59
PV2R2-26-F-RAA-41 PV2R2-33-F-RAA-41 PV2R2-41-F-RAA-41 PV2R2-47-F-RAA-41 PV2R2-53-F-RAA-41 PV2R2-59-F-RAA-41 PV2R2-65-F-RAA-41 PV2R2-75-F-RAA-41 S-PV2R2-26 S-PV2R2-33 S-PV2R2-41 S-PV2R2-47 S-PV2R2-53 S-PV2R2-59 S-PV2R2-65 S-PV2R2-75 PV2R2-41-F1 PV2R2-33-F1
PVL2-26 PVL2-33 PVL2-41 PVL2-47 PVL2-53 PVL2-59 PVL2-65 PVL2-75 PV2R2-26 PV2R2-33 PV2R2-41 PV2R2-47 PV2R2-53 PV2R2-59 PV2R2-65 PV2R2-75
1HP 0.75KW 2HP 1.5KW 3HP 2.2KW 5HP 3.75KW  7.5HP 5.5KW  10HP 7.5KW

1HP-0.75KW 配VP20 大轴15.875 1HP-0.75KW 配PV2R1 轴19.05 2HP-1.5KW 配VP20 轴12.7 2HP-1.5KW 配VP40 轴19.05 2HP-1.5KW 配PV2R1 轴19.05 3HP-2.2KW 配VP20 轴12.7 3HP-2.2KW 配VP40 轴19.05 3HP-2.2KW 配HGP-2A 轴12.5 5HP-3.7KW 配HGP-3A 轴15.875 5HP-3.7KW 配PV2R1 轴19.05 7.5HP-5.5KW 配PV2R1 轴19.05 10HP-7.5KW 配PV2R1 轴19.05

VP-12FA3(小轴12.7) VP-12FA3(大轴15.88) VP-15FA3(小轴12.7) VP-15FA3(大轴15.88)
VP-20FA3(小轴12.7) VP-20FA3(大轴15.88) VP-20FA3(花键7齿) VP-20FA3(花键9齿) VP-30FA3(平键轴19) VP-30FA3(花键9齿) VP-40FA3(平键轴19) VP-40FA3(花键9齿) VP-SF-15D(小轴12.7) VP-SF-20D(小轴12.7) VP-SF-30D(平键轴19) VP-SF-40D(平键轴19) VP1-15-70(小轴12.7) VP1-20-70(小轴12.7) VP2-30-70(平键轴19) VP2-40-70(平键轴19) VP-20-20FA3 VP-40-40FA3

0.75KW+VP08 0.75KW+VP12 0.75KW+VP15 0.75KW+VP20
0.75KW+VP30 0.75KW+VP40 1.5KW+VP08 1.5KW+VP12 1.5KW+VP15 1.5KW+VP20 1.5KW+VP30 1.5KW+VP40 2.2KW+VP20
2.2KW+VP30 2.2KW+VP40 3.7KW+VP30 3.7KW+VP40 0.75KW+VP20花键 1.5KW+VP20花键 1.5KW+VP40花键 2.2KW+VP40花键

5.5KW-卧式 3.7KW-卧式 2.2KW-卧式 1.5KW卧式 0.75KW卧式 0.75KW-20卧式-花键7齿
1.5KW-20卧式-花键7齿 2.2KW-40卧式-花键9齿 3.7KW-40卧式-花键9齿 0.75KW-20卧式-花键9齿 1.5KW-20卧式-花键9齿 1.5KW-40卧式-花键9齿
DSG-01-2B2-D24-N1-50    DSG-01-2B2-A120-N1-50    DSG-01-2B2-A240-N1-50    DSG-01-2B2L-D24-N1-50    DSG-01-2B2B-D24-N1-50    DSG-01-2B2A-...-N1-50    DSG-01-2B3-...-N1-50    DSG-01-2B3B-...-N1-50    DSG-01-2B3A-...-N1-50    DSG-01-2B4B-...-N1-50    DSG-01-2B60B-...-N1-50    DSG-01-2B8-...-N1-50    DSG-01-2B10B-...-N1-50    DSG-01-2B11B-...-N1-50    DSG-01-2B2-D24-50    DSG-01-2B2-A120-50    DSG-01-2B2-A240-50    DSG-01-2B2L-...-50    DSG-01-2B2B-...-50    DSG-01-2B2A-...-50    DSG-01-2B3-...-50    DSG-01-2B3B-...-50    DSG-01-2B3A-...-50    DSG-01-2B4B-...-50    DSG-01-2B60B-...-50    DSG-01-2B8-...-50    DSG-01-2B10B-...-50    DSG-01-2B11B-...-50    DSG-01-3C2-D24-N1-50    DSG-01-3C2-A120-N1-50    DSG-01-3C2-A240-N1-50    DSG-01-3C4-D24-N1-50    DSG-01-3C4-A120-N1-50    DSG-01-3C4-A240-N1-50    DSG-01-3C60-D24-N1-50    DSG-01-3C60-A120-N1-50    DSG-01-3C60-A240-N1-50    DSG-01-2D2-D24-N1-50    DSG-01-2D2-A120-N1-50    DSG-01-2D2-A240-N1-50    DSG-01-2N2-...-N1-50    DSG-01-3C9-...-N1-50    DSG-01-3C10-...-N1-50    DSG-01-3C11-...-N1-50    DSG-01-3C12-...-N1-50    DSG-01-3C2-D24-50    DSG-01-3C2-A120-50    DSG-01-3C2-A240-50    DSG-01-3C4-D24-50    DSG-01-3C4-A120-50    DSG-01-3C4-A240-50    DSG-01-3C60-D24-50    DSG-01-3C60-A120-50    DSG-01-3C60-A240-50    DSG-01-2D2-D24-50    DSG-01-2D2-A120-50    DSG-01-2D2-A240-50    DSG-01-2N2-...-50    DSG-01-3C9-...-50    DSG-01-3C10-...-50    DSG-01-3C11-...-50    DSG-01-3C12-...-50    DSG-02-2B2-DL (DC24V)    DSG-02-2B2-DL (AC220V)    DSG-02-3C2-DL (DC24V)    DSG-02-3C2-DL (AC220V)    DSG-02-3C3-DL (DC24V)    DSG-02-3C3-DL (AC220V)    DSG-02-3C4-DL (DC24V)    DSG-02-3C4-DL (AC220V)    DSG-02-3C6-DL (DC24V)    DSG-02-3C6-DL (AC220V)    DSG-02-2B2-LW (DC24V)    DSG-02-2B2-LW (AC220V)    DSG-02-3C2-LW (DC24V))    DSG-02-3C2-LW (AC220V)    DSG-02-3C3-LW (DC24V))    DSG-02-3C3-LW (AC220V)    DSG-02-3C4-LW (DC24V)    DSG-02-3C4-LW (AC220V)    DSG-02-3C6-LW (DC24V)    DSG-02-3C6-LW (AC220V) 
MSCV-02A  MSCV-03A  MSCV-04A  MSCV-06A  MSCV-02B  MSCV-03B  MSCV-04B  MSCV-06B  MHA-02  MHA-03  MHA-04  MHA-06  MHB-02  MHB-03  MHB-04  MHB-06 
MPCV-02A-    MPCV-02B-    MPCV-03W-    MPCV-03A-    MPCV-03B-    MPCV-04W    MPCV-04A    MPCV-04B    MPCV-06W    MPCV-06A    MPCV-06B    MPC-02W-    MPC-02A-    MPC-02B-    MPC-03W-    MPC-03A-    MPC-03B-    MPC-04W-    MPC-04A-    MPC-04B-    MPC-06W-    MPC-06A-    MPC-06B-    SPV-02W    SPV-02A    SPV-02B    SPV-03W    SPV-03A    SPV-03B    SPV-04W    SPV-04A    SPV-04B    SPV-06W    SPV-06A    SPV-06B    MP-02W-*-55    MP-02A-*-55    MP-02B-*-55    MP-03W-*-40    MP-03A-*-40    MP-03B-*-40 
MRV-02-P-0-10  MRV-02-P-1-10  MRV-02-P-2-10  MRV-02-P-3-10  MRV-02-P-4-10  MRV-03-P-0-10  MRV-03-P-1-10  MRV-03-P-2-10  MRV-03-P-3-10  MRV-03-P-4-10  MRV-02-A 系列  MRV-02-B 系列  MRV-02-W 系列  MRV-03-A 系列  MRV-03-B 系列  MRV-03-W 系列    MRV-02A-    MRV-02B-    MRV-02P-    MRV-02W-    MRV-03A-    MRV-03B-    MRV-03P-    MRV-03W-    MRV-04A-    MRV-04B-    MRV-04P-    MRV-06A-    MRV-06B-    MRF-02A-K-*-20    MRF-02B-K-*-20    MRF-02P-K-*-20    MRF-02C-K-*-20    MRF-03A-K-*-20    MRF-03B-K-*-20    MRF-03P-K-*-20    MRF-03C-K-*-20    MRF-04A-K-*-20    MRF-04B-K-*-20    MRF-04P-K-*-20    MRF-06A-K-*-20    MRF-06B-K-*-20
PV2R1-6-F-1R-U-10 PV2R1-8-F-1R-U-10 PV2R1-10-F-1R-U-10 PV2R1-14-F-1R-U-10 PV2R1-17-F-1R-U-10 PV2R1-19-F-1R-U-10 PV2R1-23-F-1R-U-10 PV2R1-25-F-1R-U-10 PV2R1-28-F-1R-U-10 PV2R1-31-F-1R-U-10 PVL1-6-F-1R-U-10 PVL1-8-F-1R-U-10 PVL1-10-F-1R-U-10 PVL1-14-F-1R-U-10 PVL1-17-F-1R-U-10 PVL1-19-F-1R-U-10 PVL1-23-F-1R-U-10 PVL1-25-F-1R-U-10 PVL1-28-F-1R-U-10 PVL1-31-F-1R-U-10
PV2R1-6-F-R PV2R1-8-F-R PV2R1-10-F-R PV2R1-12-F-R PV2R1-14-F-R PV2R1-17-F-R PV2R1-19-F-R PV2R1-21-F-R PV2R1-23-F-R PV2R1-25-F-R PV2R1-28-F-R PV2R1-31-F-R PV2R1-33-F-R PV2R2-23 PV2R2-26 PV2R2-33 PV2R2-41 PV2R2-47 PV2R2-53 PV2R2-59 PV2R2-65
PV2R2-75 PV2R2-31   PV2R1-4RAF1  PV2R1-6RAF1  PV2R1-8RAF1  PV2R1-10RAF1  PV2R1-12RAF1  PV2R1-14RAF1  PV2R1-17RAF1  PV2R1-19RAF1  PV2R1-23RAF1  PV2R1-25RAF1  PV2R1-28RAF1  PV2R1-31RAF1
PV2R1-6-FR   PV2R1-8-FR   PV2R1-10-FR PV2R1-12-FR   PV2R1-14-FR   PV2R1-17-FR   PV2R1-19-FR   PV2R1-21-FR   PV2R1-23-FR   PV2R1-25-FR   PV2R1-28-FR   PV2R1-31-FR  PV2R1-4-FR 
PV2R1-6 PV2R1-8 PV2R1-10 PV2R1-12 PV2R1-14 PV2R1-17 PV2R1-19 PV2R1-23 PV2R1-25 PV2R1-28 PV2R1-31
PV2R24-41-136-F-REAA-41 PV2R24-47-184-F-REAA-41 PV2R24-53-184-F-REAA-41 PV2R24-59-153-F-REAA-41 PV2R24-65-237-F-REAA-41 PV2R24-75-200-F-REAA-41 PV2R24-47-153-F-REAA-41 PV2R24-65-200-F-REAA-41 PV2R24-53-136-F-REAA-41
PV2R34-76-153-F-REAA-41 PV2R34-85-184-F-REAA-41 PV2R34-94-136-F-REAA-41 PV2R34-108-184-F-REAA-41 PV2R34-116-200-F-REAA-41 PV2R34-125-237-F-REAA-41 PV2R34-76-136-F-REAA-41 PV2R34-94-184-F-REAA-41 PV2R34-85-200-F-REAA-41
PV2R12-25-33 PV2R12-25-41 PV2R12-25-47 PV2R12-25-53 PV2R12-25-59 PV2R12-25-65 PV2R12-25-75 PV2R12-28-33 PV2R12-28-41 PV2R12-28-47 PV2R12-28-53 PV2R12-28-59 PV2R12-28-65 PV2R12-28-75 PV2R12-31-59
PV2R2-26-F-RAA-41 PV2R2-33-F-RAA-41 PV2R2-41-F-RAA-41 PV2R2-47-F-RAA-41 PV2R2-53-F-RAA-41 PV2R2-59-F-RAA-41 PV2R2-65-F-RAA-41 PV2R2-75-F-RAA-41 S-PV2R2-26 S-PV2R2-33 S-PV2R2-41 S-PV2R2-47 S-PV2R2-53 S-PV2R2-59 S-PV2R2-65 S-PV2R2-75 PV2R2-41-F1 PV2R2-33-F1
PVL2-26 PVL2-33 PVL2-41 PVL2-47 PVL2-53 PVL2-59 PVL2-65 PVL2-75 PV2R2-26 PV2R2-33 PV2R2-41 PV2R2-47 PV2R2-53 PV2R2-59 PV2R2-65 PV2R2-75


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