YUKEN油研液壓閥DSG-01-3C2-D24-N1-50電磁換向閥2B2 3C3 3C4 3C6

淺談液壓系統(tǒng)早期故障、中期故障和后期故障

液壓系統(tǒng)調試時及運行中都可能出現故障（早期故障、中期故障和后期故障），故障特征因設備類型不同和運行階段不同而異。下面總結下液壓系統(tǒng)早、中、后期3個時段的故障分析。
①早期故障（系統(tǒng)調試和運轉初期發(fā)生的故障）此時，故障率最高，設計、制造、安裝、調試等質量問題交織在一起，主要故障有六個方面：密封件質量差或由于裝配不當而破損，造成外洩漏嚴重（主要是接頭和元件端蓋處的洩漏）；液壓閥閥芯卡阻、運動不靈活和不到位，導緻執(zhí)行元件動作失靈或運動速度不穩(wěn)定；管道或液壓元件鑄造流道內的型砂、毛刺、切屑、纖維等污染物在油流的沖擊下脫落，堵塞泵、閥等元件的阻尼孔和過濾器，造成系統(tǒng)壓力和油缸速度不穩(wěn)定，或調壓調速不正常；閥類元件漏裝彈簧、密封件等，造成控制失靈；系統(tǒng)設計不合理、液壓元件及油液選用不當，造成執(zhí)行元件運動精度低，系統(tǒng)過熱、振動噪聲大等；系統(tǒng)由于負荷大或外界散熱條件差，造成油液溫度過高，引起內、外洩漏，導緻壓力和速度的變化，影響系統(tǒng)工作性能。

②中期故障液壓系統(tǒng)運行中期，故障率最低，這是液壓系統(tǒng)運行的****階段。此時發(fā)生的故障也稱突發(fā)性故障，具有隨機性，與時間無關。常見突發(fā)性故障的例子有：發(fā)生碰撞；管道爆裂；元件內彈簧突然折斷；電磁鐵線圈燒毀；異物堵塞流道；密封損壞；內、外洩漏嚴重等；突然停電造成系統(tǒng)動作錯亂；控制信號失真等。

突發(fā)性故障有的有先兆，如執(zhí)行元件突然爬行，表明流量閥堵塞或失靈，應及時查明原因予以排除；對于無法預測的突發(fā)性故障，隻能采取安全保護措施（如及時更換失效元件加以防范。控制油液污染是防止中期故障的重要措施。

突發(fā)性故障往往與液壓設備安裝不當、維護不及時有關。有時由于操作錯誤而發(fā)生破壞性故障。防止突發(fā)性故障主要應注意以下三個方面：認識故障特征，加強管理維護；嚴格執(zhí)行崗位責任制，加強人員崗位培訓；不懂專業(yè)知識，未經過液壓基本知識、液壓故障診斷與維修技術培訓的人員不得上崗。

③后期故障（漸發(fā)性故障或壽命故障）  液壓系統(tǒng)運行到后期，液壓元件因工作頻率和負荷的差異，易損件開始正常的超差磨損、腐蝕、疲勞、老化而逐漸失效。此階段故障率較高，洩漏明顯增加，效率下降。針對這一情況，要做到以下兩個方面：對元件進行全面檢測，對已失效的液壓元伯應進行修理或更換；液壓系統(tǒng)運行中要加強維護，注意觀察各部位工作狀況，發(fā)現有異常現象（如聲音反常、溫升異常、洩漏越來越大等），及時分析原因，采取有效對策，以防發(fā)生重大故障。

電磁換向閥：
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PV2R3-76-F-RAB-31,PV2R3-76-F-RAL-31,PV2R3-76-F-RAR-31,PV2R3-76-L-RAA-31,PV2R3-76-L-RAB-31,PV2R3-76-L-RAL-31
PV2R3-76-L-RAR-31,PV2R3-85-F-RAA-31,PV2R3-85-F-RAB-31,PV2R3-85-F-RAL-31,PV2R3-85-F-RAR-31,PV2R3-85-L-RAA-31
PV2R3-85-L-RAB-31,PV2R3-85-L-RAL-31,PV2R3-85-L-RAR-31,PV2R3-94-F-RAA-31,PV2R3-94-F-RAB-31,PV2R3-94-F-RAL-31
PV2R3-94-F-RAR-31,PV2R3-94-L-RAA-31,PV2R3-94-L-RAB-31,PV2R3-94-L-RAL-31,PV2R3-94-L-RAR-31,PV2R4-136-F-RAA-30
PV2R4-153F-RAA-30,PV2R4-184F-RAA-30,PV2R4-200F-RAA-30,PV2R4-237F-RAA-30,PV2R4A-138-FRAA-10
PV2R4A-162-FRAA-10,PV2R4A-193-FRAA-10,PVR50-F-13-R
電液換向閥
DSHG-06-3C2-A220-50 DSHG-04-2B*-D24-N-50 DSHG-04-3C*-D24-N-50 DSHG-06-2B*-D24-N-50 DSHG-06-3C*-D24-N-50
單向閥：
DT-01-22
疊加式溢流閥 :
MBA-01-C-30,MBA-01-H-30,MBA-03-B-20,MBA-03-B-30,MBA-03-H-20,MBA-03-H-30
MBB-01-C-30,MBB-01-H-30,MBB-03-B-20,MBB-03-B-30,MBB-03-H-20,MBB-03-H-30
MBP-01-C-30,MBP-01-H-30,MBP-03-B-20,MBP-03-B-30,MBP-03-H-20,MBP-03-H-30
MBW-03-B-20,MBW-03-B-30,MBW-03-H-20,MBW-03-H-30
疊加式單向節(jié)流閥：
MSA-01-X-30 MSA-01-X-50 MSA-01-Y-30 MSA-01-Y-50 MSA-03-X-30 MSA-03-X-40 MSA-03-Y-30 MSA-03-Y-40
MSB-01-X-30 MSB-01-X-50 MSB-01-Y-30 MSB-01-Y-50 MSB-03-X-30 MSB-03-X-40 MSB-03-Y-30 MSB-03-Y-40
MSW-01-X-30 MSW-01-X-50 MSW-01-XY-30 MSW-01-XY-50 MSW-01-Y-30 MSW-01-Y-50 MSW-01-YX-30 MSW-01-YX-50
MSW-03-X-30 MSW-03-X-40 MSW-03-Y-30 MSW-03-Y-40  
溢流閥:
BF-10-*-32
BG-03 BG-03-*-32 BG-03-32 BG-03-V-32 BG-06 BG-06-*-32 BG-06-32 BG-10-*-32 BG-10-32
BST-03-2B*-AC/DC-46 BST-03-3c*-AC/DC-46
Bt-03-*-22 BT-03-32 Bt-06-*-22 BT-06-32 Bt-10-*-22
DG-01-22 DG-02-*-22 DT-01-22 DT-02-*-22
S-BG-03-*-l-40 S-BG-06-*-l-40 
液壓單向閥：
CRG-03，CRG-06，CRG-10
液壓管式溢流閥:
BT-04;BT-06,BT-03-32,BT-10-32，BT-04
先導式溢流閥:
RV-10，RV-03 ,RV-06T,RV-04T,
電磁溢流閥:
BSG-03-2B2-A110-N1-L-46 BSG-03-2B2-A110-N1-R-46 BSG-03-2B2-A220-N1-L-46 BSG-03-2B2-A220-N1-R-46
BSG-03-2B2B-A110-N1-L-46 BSG-03-2B2B-A110-N1-R-46 BSG-03-2B2B-A220-N1-L-46 BSG-03-2B2B-A220-N1-R-46
BSG-03-2B2B-D24-N1-L-46 BSG-03-2B2B-D24-N1-R-46 BSG-03-2B2-D24-N1-L-46 BSG-03-2B2-D24-N1-R-46
BSG-03-2B3A-A110-N1-L-46 BSG-03-2B3A-A110-N1-R-46 BSG-03-2B3A-A220-N1-L-46 BSG-03-2B3A-A220-N1-R-46
BSG-03-2B3A-D24-N1-L-46 BSG-03-2B3A-D24-N1-R-46 BSG-03-2B3B-A110-N1-L-46 BSG-03-2B3B-A110-N1-R-46
BSG-03-2B3B-A220-N1-L-46 BSG-03-2B3B-A220-N1-R-46 BSG-03-2B3B-D24-N1-L-46 BSG-03-2B3B-D24-N1-R-46
BSG-03-3C2-A110-N1-L-46 BSG-03-3C2-A110-N1-R-46 BSG-03-3C2-A220-N1-L-46 BSG-03-3C2-A220-N1-R-46
BSG-03-3C2-D24-N1-L-46 BSG-03-3C2-D24-N1-R-46 BSG-03-3C3-A110-N1-L-46 BSG-03-3C3-A110-N1-R-46
BSG-03-3C3-A220-N1-L-46 BSG-03-3C3-A220-N1-R-46 BSG-03-3C3-D24-N1-L-46 BSG-03-3C3-D24-N1-R-46
BSG-06-2B2-A110-N1-L-46 BSG-06-2B2-A110-N1-R-46 BSG-06-2B2-A220-N1-L-46 BSG-06-2B2-A220-N1-R-46
BSG-06-2B2B-A110-N1-L-46 BSG-06-2B2B-A110-N1-R-46 BSG-06-2B2B-A220-N1-L-46 BSG-06-2B2B-A220-N1-R-46
BSG-06-2B2B-D24-N1-L-46 BSG-06-2B2B-D24-N1-R-46 BSG-06-2B2-D24-N1-L-46 BSG-06-2B2-D24-N1-R-46
BSG-06-2B3A-A110-N1-L-46 BSG-06-2B3A-A110-N1-R-46 BSG-06-2B3A-A220-N1-L-46 BSG-06-2B3A-A220-N1-R-46
BSG-06-2B3A-D24-N1-L-46 BSG-06-2B3A-D24-N1-R-46 BSG-06-2B3B-A110-N1-L-46 BSG-06-2B3B-A110-N1-R-46
BSG-06-2B3B-A220-N1-L-46 BSG-06-2B3B-A220-N1-R-46 BSG-06-2B3B-D24-N1-L-46 BSG-06-2B3B-D24-N1-R-46
BSG-06-3C2-A110-N1-L-46 BSG-06-3C2-A110-N1-R-46 BSG-06-3C2-A220-N1-L-46 BSG-06-3C2-A220-N1-R-46
BSG-06-3C2-D24-N1-L-46 BSG-06-3C2-D24-N1-R-46 BSG-06-3C3-A110-N1-L-46 BSG-06-3C3-A110-N1-R-46
BSG-06-3C3-A220-N1-L-46 BSG-06-3C3-A220-N1-R-46 BSG-06-3C3-D24-N1-L-46 BSG-06-3C3-D24-N1-R-46
BSG-10-2B2-A110-N1-L-46 BSG-10-2B2-A110-N1-R-46 BSG-10-2B2-A220-N1-L-46 BSG-10-2B2B-A110-N1-L-46
BSG-10-2B2B-A110-N1-R- BSG-10-2B2B-A220-N1-L-46 BSG-10-2B2B-D24-N1-L- BSG-10-2B2-D24-N1-L-46
BSG-10-2B3A-A110-N1-L-46 BSG-10-2B3A-A110-N1-R-46 BSG-10-2B3A-A220-N1-L-46 BSG-10-2B3A-D24-N1-L-46
BSG-10-2B3B-A110-N1-L-46 BSG-10-2B3B-A110-N1-R-46 BSG-10-2B3B-A220-N1-L-46 BSG-10-2B3B-D24-N1-L-46
BSG-10-3C2-A110-N1-L-46 BSG-10-3C2-A220-N1-L-46 BSG-10-3C2-D24-N1-L-46 BSG-10-3C3-A110-N1-L-46
BSG-10-3C3-A220-N1-L-46 BSG-10-3C3-D24-N1-L-46 
BST-03-2B2-D24-N1-L-46       BST-03-2B2-A110-N1-L-46       BST-06-2B3B-A220-N1-L-46
BST-03-2B2-A220-N1-L-46      BST-03-2B2-A240-N1-L-46       BST-03-2B3B-D24-N1-L-46 
BST-03-2B3B-A110-N1-L-46     BST-03-2B3B-A220-N1-L-46      BST-03-2B3B-A240-N1-L-46
BST-06-2B2-D24-N1-L-46       BST-06-2B2-A110-N1-L-46       BST-06-2B2-A220-N1-L-46 
BST-06-2B2-A240-N1-L-46      BST-06-2B3B-D24-N1-L-46       BST-06-2B3B-A110-N1-L-46
SBSG-03-3C2-A110-N1-L-51 SBSG-03-3C2-A110-N1-R-51 SBSG-03-3C3-A110-N1-L-51 SBSG-03-3C3-A110-N1-R-51
SBSG-03-2B2-A110-N1-L-51 SBSG-03-2B2-A110-N1-R-51 SBSG-03-2B3A-A110-N1-L-51 SBSG-03-2B3A-A110-N1-R-51
SBSG-03-2B2B-A110-N1-L-51 SBSG-03-2B2B-A110-N1-R-51 SBSG-03-3C2-A220-N1-L-51 SBSG-03-3C2-A220-N1-R-51
SBSG-03-3C3-A220-N1-L-51 SBSG-03-3C3-A220-N1-R-51 SBSG-03-2B2-A220-N1-L-51 SBSG-03-2B2-A220-N1-R-51
SBSG-03-2B3A-A220-N1-L-51 SBSG-03-2B3A-A220-N1-R-51 SBSG-03-2B2B-A220-N1-L-51 SBSG-03-2B2B-A220-N1-R-51
SBSG-03-3C2-D24-N1-L-51 SBSG-03-3C2-D24-N1-R-51 SBSG-03-3C3-D24-N1-L-51 SBSG-03-3C3-D24-N1-R-51
SBSG-03-2B2-D24-N1-L-51 SBSG-03-2B2-D24-N1-R-51 SBSG-03-2B3A-D24-N1-L-51 SBSG-03-2B3A-D24-N1-R-51
SBSG-03-2B2B-D24-N1-L-51 SBSG-03-2B2B-D24-N1-R-51
比例閥：
EBG-03 EBG-06
EDG-01V-B-PNT15-51 EDG-01V-H-1-PIT15-5103
EFBG-03-125-C-20T EFBG-03-125-C-60T EFBG-03-160-C-20T EFBG-06-250-H-20T