弘一HONGYI油泵PV2R21-65-25 13 21-23/47/41/75/66/53雙聯(lián)葉片泵
PV11R10，PV11R20
PV2PV2R1-10-F-RAA-43，PV2PV2R1-12-F-RAA-43，PV2PV2R1-14-F-RAA-43，PV2PV2R1-14-F-RAR-43，PV2PV2R1-17-F-RAA-43，PV2PV2R1-19-F-RAA-43，PV2PV2R1-23-F-RAA-43，PV2PV2R1-25-F-RAA-43，PV2PV2R1-31-F-RAA-43，PV2PV2R1-31-L-RAA-43，PV2PV2R1-6-F-RAA-43，PV2PV2R1-8-F-RAA-43，PV2PV2R2-33-F-RAA-41，PV2PV2R2-41-F-RAA-41，PV2PV2R2-47-F-RAA-41，PV2PV2R2-53-F-RAA-41，PV2PV2R2-59-F-RAA-41，PV2PV2R2-65-F-RAA-41，PV2PV2R2-65-F-RAL-41，PV2PV2R2-75-F-RAA-4103，PV2PV2R3-116-F-RAA-31，PV2PV2R3-116-F-RLB-31，PV2PV2R3-76-F-RAA-31，PV2PV2R3-94-F-RLB-31，PV2PV2R4-184-F-RAAA-30，pv2r1-10，pv2r1-10-f-raa-40，PV2R1-10-F-RAA-41，pv2r1-10-f-raa-4222，pv2r1-10-f-raa-43，PV2R1-12-FR，PV2R1-12-F-RAA-41，PV2R1-12-F-RAA-43，pv2r1-12-f-rar-41，pv2r1-14-f-r，PV2R1-14-F-RAA-41，PV2R1-14-F-RAA-43，PV2R1-14-F-RAR-43，pv2r1-17，PV2R1-17-F-RAA-41，PV2R1-17-F-RAA-43，pv2r1-17-f-ral-41，pv2r1-17-l-raa-41，PV2R1-19-F-RAA-41，PV2R1-19-F-RAA-43，PV2R12-10-41-F-REAA-43，PV2R12-12-26-F-REAA-43，PV2R12-12-26-F-REAR-42，PV2R12-12-53-F-RELA-43，PV2R12-14-53-F-REAA-43，PV2R12-14-53-F-RFAR-43，PV2R12-19-41-F-REAA-43，PV2R12-19-65-F-REAA-43，PV2R12-23-59-F-REAA-43，PV2R12-25-33-F-REAA-43，PV2R12-25-47-F-REAA-43，PV2R12-25-59-F-REAA-43，pv2r1-23，PV2R12-31-33-F-REAA-43，PV2R12-31-33-F-REAR-4326，PV2R12-31-59-F-REAA-43，PV2R12-31-65-F-REAA-43，pv2r1-23-f-raa-41，PV2R1-23-F-RAA-43，pv2r1-25-f-raa，PV2R1-25-F-RAA-41，PV2R1-25-F-RAA-43，pv2r1-25-l-raa-41，PV2R12-6-59-F-REAA-43，PV2R12-6-65-F-REAA-43，PV2R12-8-33-F-RFAR-43，pv2r1-28-f-raa-41，pv2r1-31，PV2R13-10-116-F-REAA-43，PV2R1-31-F-RAA41，pv2r1-31-f-raa-41，PV2R1-31-F-RAA-43，pv2r1-31-f-rab-41，PV2R1-31-L-RAA-43，pv2r1-6-f-raa，pv2r1-6-f-raa-40，PV2R1-6-F-RAA-41，pv2r1-6-f-raa-4222，PV2R1-6-F-RAA-43，pv2r1-6-l-raa-41，pv2r1-8，pv2r1-8-f-raa-41，PV2R1-8-F-RAA-43，PV2R2-，pv2r2-26，pv2r2-26-f-raa，pv2r2-26-f-raa-41，pv2r2-33，pv2r2-33-f-r，pv2r2-33-f-raa-41，pv2r2-33-f-rar-41，PV2R23-41-116-F-RAAA-41，PV2R23-41-94-F-REAA-41，pv2r2-41-f-raa，pv2r2-41-f-raa-40，PV2R2-41-F-RAA-41，pv2r2-41-l-raa-41，PV2R24-33-136-F-REAA-31，pv2r2-47，pv2r2-47-f-r，PV2R2-47-F-RAA-41，PV2R24A-41-FRAAA-10，pv2r2-53-f-r，PV2R2-53-F-RAA-41，PV2R2-59-F-RAA-41，pv2r2-59-f-rab-41，pv2r2-65，PV2R2-65-F-RAA-41，pv2r2-65-f-raa-4118，PV2R2-65-F-RAL-41，PV2R2-75-F-RAA-4103，PV2R3，pv2r3-116-f-raa-31，PV2R3-116-F-RLB-31，pv2r3-116-l-raa-31，pv2r3-116-l-rab-31，pv2r3-125-f-raa-31，PV2R3-136-F-RAA-31，PV2R34-116-153-L-REAA-31，pv2r34-116-237，PV2R34A-76-FRAAA-10，pv2r3-52，pv2r3-52-f-raa-31，pv2r3-52-l-raa-31，pv2r3-60-f-raa-31，pv2r3-66-l-raa-31，pv2r3-76，PV2R3-76-F-RAA-31，pv2r3-76-l-raa-31，pv2r3-85-f-raa-31，PV2R3-94-F-RAA-31，PV2R3-94-F-RLB-31，pv2r3-94-l-raa-31，PV2R4-136-F-RAA-30，PV2R4-153F-RAA-30，pv2r4-153-f-raa-30，PV2R4-184F-RAA-30，pv2r4-184-f-raa-30，PV2R4-184-F-RAAA-30，pv2r4-184-f-ral-30，pv2r4-184-l-raa-30，pv2r4-184-l-ral-30，PV2R4-200F-RAA-30，pv2r4-200-f-raa-30，pv2r4-200-l-raa-30，pv2r4-237，PV2R4-237F-RAA-30，pv2r4-237-f-raa-30，pv2r4-237-f-ral-30，PV2R4A-138-FRAA-10，PV2R4A-162-FRAA-10，PV2R4A-193-FRAA-10，PV2RPV2R12-10-41-F-REAA-43，PV2RPV2R12-12-26-F-REAA-43，PV2RPV2R12-12-26-F-REAR-42，PV2RPV2R12-12-53-F-RELA-43，PV2RPV2R12-14-53-F-REAA-43，PV2RPV2R12-14-53-F-RFAR-43，PV2RPV2R12-19-41-F-REAA-43，PV2RPV2R12-19-65-F-REAA-43，PV2RPV2R12-23-59-F-REAA-43，PV2RPV2R12-25-33-F-REAA-43，PV2RPV2R12-25-47-F-REAA-43，PV2RPV2R12-25-59-F-REAA-43，PV2RPV2R12-31-33-F-REAA-43，PV2RPV2R12-31-59-F-REAA-43，PV2RPV2R12-31-65-F-REAA-43，PV2RPV2R12-6-59-F-REAA-43，PV2RPV2R12-6-65-F-REAA-43，PV2RPV2R12-8-33-F-RFAR-43，PV2RPV2R13-10-116-F-REAA-43，PV2RPV2R23-41-116-F-RAAA-41，PV2RPV2R23-41-94-F-REAA-41，PV2RPV2R24-33-136-F-REAA-31，PV2RPV2R34-116-153-L-REAA-31
YBE-8，YBE-16，YBE-25，YBE-32，YBE-40，YBE-50，YBE-63，YBE-80，YBE-100，YBE-125，YBE-160，YBE-200
2520V15A6-1AB22R，2520V14A2-1AC22R，2520V14A3-1AB22R，2520V14A3-1AD22R，2520V14A4-1AC22R，2520V14A5-1AB22R，2520V14A8-1AD22R，2520V14A9-1AC22R，2520V15A10-1AC22R，2520V14A12-1AC22R，2520V14A14-1AB22R，2520V14A14-1AD22R，2520V10A9-1AB22R，4535VQ60A35-1BB22R，4535VQ60A25-86DB22R，4535VQ50A35-1BB22R，4535VQ60A25-86DA22R，2520V12A12-1AB22R，2520V10A8-1AB22R，2520V10A8-1AD22R，2520V10A7-1AD22R，2520V10A9-1AC22R，45VQ60A-1D22L，2520V10A10-1AB22R，2520V10A14-1AC22R，2520V10A2-1AB22R，2520V10A12-1AB22R，2520V10A12-1AD22R
4535VQ66A38-86AA22R
45VQ42A-86B22R，45VQ42A-86A22R，2520V10A10-1AC22R，45VQ60A-1C22L
2520V12A7-1AC22R，2520V12A6-1AD22R，2520V12A7-1AB22R，2520V12A9-1AB22R，2520V12A8-1AB22R，2520V12A9-1AD22R，2520V12A3-1AB22R，2520V12A2-1AB22R，2520V14A11-1AD22R，2520V14A11-1AB22R，2520V14A10-1AC22R，2520V10A4-1AB22R，2520V10A4-1AC22R，2520V12A10-1AD22R，2520V12A12-1AD22R，2520V12A11-1AB22R，2520V10A7-1AC22R，2520V10A6-1AB22R，2520V10A5-1AB22R，2520V10A2-1AC22R，2520V10A6-1AD22R
4520VQ45A5-1BB22R，4520VQ42A12-86DD22R，4520VQ50A11-1CC22R
35VQ30A-1D22R，4520VQ42A11-1AB22R，35VQ38A-1A22L，3525VQ38A21-86BB22R，35VQ25A-1B22R
3525VQ38A17-1AA22R，3525VQ35A14-1CC22R，3525VQ38A14-11AA22R
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液壓系統(tǒng)設(shè)計不合理造成的發(fā)熱分析
液壓系統(tǒng)發(fā)熱，這是個常見的問題。液壓系統(tǒng)的發(fā)熱按發(fā)熱原因可分為兩大類：一類是由于設(shè)計不合理的原因造成的發(fā)熱；一類是由于液壓元件故障或使用不當(dāng)?shù)脑?，造成的發(fā)熱。顯然，發(fā)熱原因不同，其排除方法也不一樣。
下面蘇州逐利為大家分析下設(shè)計不合理，造成液壓系統(tǒng)的發(fā)熱及其排除方法。
(1)液壓油的油號選用不當(dāng)，可能造成液壓系統(tǒng)的發(fā)熱所選液壓油在油溫較低時，系統(tǒng)正常工作，但系統(tǒng)工作一段時間后，油溫升高，液壓油黏度下降，造成系統(tǒng)內(nèi)部泄漏增加，伴隨泄漏的增加更促使了油溫的上升，形成油溫的惡性循環(huán)。解決的方法是：根據(jù)系統(tǒng)的負(fù)載及正常工作溫度要求，選擇合適黏度的液壓油。
(2)油箱設(shè)計不合理，使液壓系統(tǒng)散熱效果降低系統(tǒng)發(fā)熱油箱的主要功能是儲存液壓油，但它同時兼有散熱、沉淀雜質(zhì)、分離水分的作用。油箱設(shè)計不合理，主要表現(xiàn)在兩個方面：一是油箱體積設(shè)計過小，由于混凝土泵屬移動型液壓設(shè)備，油箱體積一般為液壓泵流量的一倍左右，因此，油箱散熱面積及儲油量均較?。欢怯行┯拖湓诮Y(jié)構(gòu)上設(shè)計不合理，吸油管口和回油管口較近，中間又不設(shè)隔板，從而縮短了油液在油箱內(nèi)的冷卻循環(huán)及沉淀雜質(zhì)的路徑，甚至造成大部分回油直接進入吸油管，使油箱的散熱效果降低，油溫升高。解決方法是：適當(dāng)增加油箱體積，使油箱體積為( 1125~115)Q，并盡量加大吸油管口與回油管口之間的距離，吸、回油管之間應(yīng)設(shè)置隔板，以確保油箱應(yīng)有的散熱功率。
(3)散熱流量較小，冷卻器安裝位置不合理，使系統(tǒng)散熱能力降低混凝土泵的冷卻方式有風(fēng)冷和水冷兩種，用戶可根據(jù)實際情況選用，但一般采用風(fēng)冷較多。有些混凝土泵因考慮冷卻器的承壓要求，將冷卻器設(shè)置在攪拌系統(tǒng)的回油路上，僅對攪拌系統(tǒng)的油液進行冷卻，因攪拌系統(tǒng)流量較小，因此整個液壓系統(tǒng)冷卻效果差，使系統(tǒng)發(fā)熱。解決的方法：一是可采用獨立冷卻回路，提高冷卻效果。二是將冷卻器設(shè)置在系統(tǒng)總回油路上，以加大散熱流量，提高冷卻效果，但此時應(yīng)注意兩個問題，第一個問題是冷卻風(fēng)扇的轉(zhuǎn)速，冷卻風(fēng)扇的轉(zhuǎn)速不能過低，否則將降低冷卻效果，可采用電動機驅(qū)動風(fēng)扇，或在總回油路上設(shè)置一低壓驅(qū)動馬達(dá)，使馬達(dá)轉(zhuǎn)速與散熱流量相匹配，同時還可解決主回路壓力沖擊對冷卻器承壓能力的影響；第二個問題是如采用電動機驅(qū)動風(fēng)扇，主系統(tǒng)的壓力沖擊對冷卻器承壓能力的影響，此時，可在回油路上與冷卻器并裝一個低壓溢流保護閥或單向閥對冷卻器進行最高承壓保護。
(4)液壓元件選型不當(dāng)，造成系統(tǒng)發(fā)熱混凝土泵液壓系統(tǒng)一般為高壓大流量系統(tǒng)，如果系統(tǒng)中的液壓元件，主要是換向閥、溢流閥和順序閥規(guī)格選用不合理，不能滿足大流量要求，從而在使用中，使閥口液流流速過高，造成較大的壓力損失而使油溫升高，因此，液壓系統(tǒng)設(shè)計中在進行液壓元件選型設(shè)計時，一定要根據(jù)液壓元件所承受的最高工作壓力、所通過的最大流量以及所要求的壓力和流量調(diào)整范圍進行元件的選擇，盡量減少閥口壓力損失，從而減少由于液壓元件規(guī)格選用不合理而造成的系統(tǒng)發(fā)熱。
(5)管路設(shè)計、安裝不合理，造成壓力損耗大使壓力能轉(zhuǎn)換成熱能在液壓系統(tǒng)設(shè)計中，管路的設(shè)計與安裝不能忽視，各管路管徑應(yīng)嚴(yán)格按其工作壓力和通過流量進行設(shè)計，避免管徑設(shè)計過小，造成流速過高，沿程壓力損失過大，引起發(fā)熱。同時，還應(yīng)注意管路的安裝，既要做到外觀整齊，又要避免管路集聚及管路的急轉(zhuǎn)彎，影響管路的自然散熱或造成局部壓力損失過大引起發(fā)熱。
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