HENRYD液壓換向電磁閥4WE6J61/EG24N9Z5L 4WE6E/CW220N9Z5L G D H
液壓系統雙聯葉片泵損壞原因與分析
某液壓系統雙聯葉片泵的性能參數:壓力70kg/cm2,流量148L/min、112L/min。該泵在運行十幾年后,壓力下降,噪聲增大,吸不上油,無法正常運行,而換上的新泵使用不到一年就出現同樣的故障。爲何會這樣?
(一)原液壓泵解剖現象及損壞原因分析
將損壞的液壓泵進行解剖,發現定子曲線內表面嚴重磨損(見圖2)。定子由合金鋼制成,其內表面由四段圓弧及四段過渡曲線組成,滑道曲面經硬化處理(滲碳或氮化)并磨光,以承受葉片端部的滑磨及接觸應力。葉片由熱處理后具有高硬度的鋼材制成,其與滑道接觸的一端通常制成光滑的圓角。解剖發現排油區AB、EF兩段弧磨損最爲嚴重,已磨出溝槽,葉片前端(與定子接觸端)有摩擦亮痕。
由圖2知排油區爲AB、EF,吸油區爲CD、GH(按葉片轉動方向)。在排油區,葉片根部通有液壓油,以保證葉片頂部與定子內表面可靠接觸,從葉片徑向運動看,葉片在AB、EF、CD、GH四段有徑向加速度存在,在此圓弧與過渡曲線相連點(即A、B、C、D、E、F、G、H點)處有徑向速度突變,不同程度存在柔性沖擊,如果液壓泵吸、排油不暢,吸空斷油,將導緻潤滑油膜發生破壞而産生干摩擦,若無介質將摩擦産生的熱量帶走,液壓泵將出現內洩增加、壓力下降、氣穴、噪聲等故障現象的惡性循環而榀壞液壓泵。
同時,該液壓泵吸油不暢,緻使葉片與定子內表面接觸油膜發生了破壞,相對滑動面形成了強烈干摩擦,AB、EF兩端排油區尤爲嚴重,産生了大量的熱量且無法及時散開(液壓泵外殼燙手),緻使油溫劇升,從而使葉片與定子接觸表面軟化,黏結撕裂而形成溝槽,惡性循環的結果導緻液壓泵內洩增加、排量減少、氣穴,而産生噪聲、壓力下降及不能滿足設備正常運行的使用要求。
該機主液壓系統有4臺主液壓泵、4臺供油液壓泵和該葉片泵安裝在高位放置的油箱上,因而油箱上振動較大,造成葉片泵徑向力增加,破壞了徑向力平衡和葉片與定子曲面的油膜密封。另一方面,油冷卻器的冷卻性能降低,相對地增加油箱散熱效果,因而隻將油箱內的液壓油添加到略高于最低油位。關鍵的原因是葉片泵本身吸油能力較差,再降低液面緻使葉片泵的吸油發生吸空,吸油腔已産生嚴重負壓導緻氣穴現象而産生氣泡,氣泡的存在使葉片與定子之間失去保護油膜,介質不足使葉片的徑向力平衡狀態發生改變、摩擦加劇、噪聲增大、産生熱量,這種惡性循環的結果進一步使吸排油完全中斷,損壞液壓泵。
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 大軸15.875 1HP-0.75KW 配PV2R1 軸19.05 2HP-1.5KW 配VP20 軸12.7 2HP-1.5KW 配VP40 軸19.05 2HP-1.5KW 配PV2R1 軸19.05 3HP-2.2KW 配VP20 軸12.7 3HP-2.2KW 配VP40 軸19.05 3HP-2.2KW 配HGP-2A 軸12.5 5HP-3.7KW 配HGP-3A 軸15.875 5HP-3.7KW 配PV2R1 軸19.05 7.5HP-5.5KW 配PV2R1 軸19.05 10HP-7.5KW 配PV2R1 軸19.05
VP-12FA3(小軸12.7) VP-12FA3(大軸15.88) VP-15FA3(小軸12.7) VP-15FA3(大軸15.88)
VP-20FA3(小軸12.7) VP-20FA3(大軸15.88) VP-20FA3(花鍵7齒) VP-20FA3(花鍵9齒) VP-30FA3(平鍵軸19) VP-30FA3(花鍵9齒) VP-40FA3(平鍵軸19) VP-40FA3(花鍵9齒) VP-SF-15D(小軸12.7) VP-SF-20D(小軸12.7) VP-SF-30D(平鍵軸19) VP-SF-40D(平鍵軸19) VP1-15-70(小軸12.7) VP1-20-70(小軸12.7) VP2-30-70(平鍵軸19) VP2-40-70(平鍵軸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花鍵 1.5KW+VP20花鍵 1.5KW+VP40花鍵 2.2KW+VP40花鍵
5.5KW-臥式 3.7KW-臥式 2.2KW-臥式 1.5KW臥式 0.75KW臥式 0.75KW-20臥式-花鍵7齒
1.5KW-20臥式-花鍵7齒 2.2KW-40臥式-花鍵9齒 3.7KW-40臥式-花鍵9齒 0.75KW-20臥式-花鍵9齒 1.5KW-20臥式-花鍵9齒 1.5KW-40臥式-花鍵9齒
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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