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(jì)不合理造成的發(fā)熱分析
液壓系統(tǒng)發(fā)熱，這是個(gè)常見(jiàn)的問(wèn)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(jì)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(jì)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(hào)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(shí)，系統(tǒng)正常工作，但系統(tǒng)工作一段時(shí)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(jì)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(chǔ)存液壓油，但它同時(shí)兼有散熱、沉淀雜質(zhì)、分離水分的作用。油箱設(shè)計(jì)不合理，主要表現(xiàn)在兩個(gè)方面：一是油箱體積設(shè)計(jì)過(guò)小，由于混凝土泵屬移動(dòng)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(chǔ)油量均較??；二是有些油箱在結(jié)構(gòu)上設(shè)計(jì)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(jìn)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(shí)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(duì)攪拌系統(tǒng)的油液進(jìn)行冷卻，因攪拌系統(tǒng)流量較小，因此整個(gè)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(dú)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(shí)應(yīng)注意兩個(gè)問(wèn)題，第一個(gè)問(wèn)題是冷卻風(fēng)扇的轉(zhuǎn)速，冷卻風(fēng)扇的轉(zhuǎn)速不能過(guò)低，否則將降低冷卻效果，可采用電動(dòng)機(jī)驅(qū)動(dòng)風(fēng)扇，或在總回油路上設(shè)置一低壓驅(qū)動(dòng)馬達(dá)，使馬達(dá)轉(zhuǎn)速與散熱流量相匹配，同時(shí)還可解決主回路壓力沖擊對(duì)冷卻器承壓能力的影響；第二個(gè)問(wèn)題是如采用電動(dòng)機(jī)驅(qū)動(dòng)風(fēng)扇，主系統(tǒng)的壓力沖擊對(duì)冷卻器承壓能力的影響，此時(shí)，可在回油路上與冷卻器并裝一個(gè)低壓溢流保護(hù)閥或單向閥對(duì)冷卻器進(jìn)行最高承壓保護(hù)。
(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(guò)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(jì)中在進(jìn)行液壓元件選型設(shè)計(jì)時(shí)，一定要根據(jù)液壓元件所承受的最高工作壓力、所通過(guò)的最大流量以及所要求的壓力和流量調(diào)整范圍進(jìn)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(jì)、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(jì)中，管路的設(shè)計(jì)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(guò)流量進(jìn)行設(shè)計(jì)，避免管徑設(shè)計(jì)過(guò)小，造成流速過(guò)高，沿程壓力損失過(guò)大，引起發(fā)熱。同時(shí)，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(guò)大引起發(fā)熱。
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