MDD090C-N-030-N2M-110GB1數(shù)字科技力士樂(lè) |
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MDD090C-N-030-N2M-110GB1數(shù)字科技力士樂(lè)![]() I變頻水泵并聯(lián)運(yùn)行特征分析圖3是變頻水泵并聯(lián)運(yùn)行性能曲線圖。圖中曲線2,3分別是型號(hào)相同的單臺(tái)泵、兩臺(tái)泵并聯(lián)及三臺(tái)泵并聯(lián)在轉(zhuǎn)數(shù)為n時(shí)的流量一揚(yáng)程性能曲線,曲線3分別是相應(yīng)的單臺(tái)泵、兩臺(tái)泵并聯(lián)及3臺(tái)泵并聯(lián)在轉(zhuǎn)數(shù)為n時(shí)的流量一揚(yáng)程性能曲線。孫叩曲線分別為單臺(tái)水泵轉(zhuǎn)速為n、n時(shí)的流量一效率性能曲線。如圖3所示,并聯(lián)運(yùn)行的水泵向系統(tǒng)提供的揚(yáng)程相等,流量為各臺(tái)水泵在工作狀態(tài)點(diǎn)流量之和。由于所有并聯(lián)運(yùn)行的水泵性能參數(shù)及運(yùn)行工作點(diǎn)相同,其運(yùn)行效率也相同,只要知道其中一臺(tái)水泵的運(yùn)行效率,就可以得到并聯(lián)泵組的整體運(yùn)行效率。 BALLUFF BES-517-132-M7-H (Used, Cleaned, Tested 2 year warranty) BALLUFF BES-516-542-BO-H-05 (Surplus New In factory packaging) BALLUFF BES-516-542-BO-H-05 (Surplus New In factory packaging) BALLUFF BES-515-356-SK-C (Used, Cleaned, Tested 2 year warranty) BALLUFF BES-515-356-SK-C (Used, Cleaned, Tested 2 year warranty) BALLUFF BLS 18KW-XX-1P-L-02 BEAM PHOTOELECTRIC EMITTER *NEW IN A FACTORY BAG* BALLUFF BLS 18KW-XX-1P-L-02 BEAM PHOTOELECTRIC EMITTER *NEW IN A BALLUFF RXD-0801-J-01-S712-1 (Surplus New not in factory packaging) BALLUFF RXD-0801-J-01-S712-1 (Surplus New not in factory packaging) BALLUFF BMO-A01-J-PU-CS-75 (Used, Cleaned, Tested 2 year warranty) BALLUFF BES-516-324-SA-26-05 (Surplus New In factory packaging) BALLUFF BES-516-324-SA-26-05 (Surplus New In factory packaging) BALLUFF BOS-S50-PL-5-C01-PP (Surplus New In factory packaging) BALLUFF BKS-S22-MIB-6-PU-05 (Surplus New In factory packaging) BALLUFF BKS-S22-MIB-6-PU-05 (Surplus New In factory packaging) BALLUFF BCS-012-NSB1-L-S4 (Used, Cleaned, Tested 2 year warranty) BALLUFF BCS-012-NSB1-L-S4 (Used, Cleaned, Tested 2 year warranty) BALLUFF BCS-M30-KN2-UST15G-AV02 (Surplus New In factory packaging) BALLUFF BLS-35K-XX-OH-BO-L (Surplus New not in factory packaging) BALLUFF C21BE3-00-TY-300F (Surplus New In factory packaging) BALLUFF BNS-519-X496-100-P13 (Surplus New In factory packaging) BALLUFF BNS-519-X496-100-P13 (Surplus New In factory packaging) BALLUFF BES-516-343-SA16-C-PU-03 (Surplus New In factory packaging) BALLUFF BCS034-WO-5-L3 (Surplus New not in factory packaging) BALLUFF BCS034-WO-5-L3 (Surplus New not in factory packaging) BALLUFF BNS-542-B04-D12-72-10 (Surplus New In factory packaging) BALLUFF BESQ08ZC-NSC20B-BP06 (Surplus New not in factory packaging) BALLUFF BESQ08ZC-NSC20B-BP06 (Surplus New not in factory packaging) BALLUFF BES-516-300-S295/1.025"-S4 (Surplus New not in factory packaging) Balluff Photoelectric Sensor BOS 26K-PA-1HC-S4-C Used #38923 Balluff BES 516 420 E4 L Sensor BES516420E4L - Used Balluff BES 516 420 E4 L Sensor BES516420E4L - Used BALLUFF BES-516-325-E5-R5 (Used, Cleaned, Tested 2 year warranty) BALLUFF BNS-519-FD-60-111 (Used, Cleaned, Tested 2 year warranty) BALLUFF BNS-519-FD-60-111 (Used, Cleaned, Tested 2 year warranty) BALLUFF BNS-819-B03-D12-72-10 (Surplus New In factory packaging) BALLUFF BNI-PBS-104-000-Z001 (Used, Cleaned, Tested 2 year warranty) Balluff BES 516-324-E4-C-S4-00,2 Scratch & Dent #62627 BALLUFF BNS-819-B04-D08-46-13 (Surplus New In factory packaging) BALLUFF BNS-819-B04-D08-46-13 (Surplus New In factory packaging) BALLUFF BES-515-420-S21-L (Surplus New In factory packaging) 3HNE 00324-1 3HNE 00325-1 3HNE 00327-1保證全新原裝,沖量大促銷(xiāo)! 3HNE 00330-1 3HNE 00331-1 3HNE 00332-1 3HNE 00333-1 3HNE 00335-1 3HNE 00340-1 3HNE 00347-1 3HNE 00378-1 3HNE 00413-1 3HNE 00414-1 3HNE 00421-1保證全新原裝,沖量大促銷(xiāo)! 3HNE 00451-1 3HNE 00471-1 3HNE 00496-1 3HNE 00506-1 3HNE 00554-1 3HNE 00574-1 3HNE 00578-1 3HNE 00589-1 3HNE 00598-1 3HNE 00600-1 3HNE 00601-1 3HNE 00609-1 3HNE 00625-1 3HNE 00628-1保證全新原裝,沖量大促銷(xiāo)! ![]() Allen Bradley 800E-D3 Lamp Module 800ED3 ALLEN BRADLEY 5130-KA /A INTERFACE MODULE ALLEN BRADLEY 700-PK400A1 U 20A 600V 4 Coil120 VACV USED Allen-Bradley #100-C12 -FREE SHIPPING 30 day Warranty Allen Bradley 140-MN-0400 SER D ALLEN BRADLEY 800MR-B2 SER. A UNMP ALLEN-BRADLEY COMPACT IO 1769-ECR SER A REV 2 USED ALLEN BRADLEY 800S-3SB PUSH BUTTON STATION 800S3SB ALLEN BRADLEY 700DC-P800Z24 RELAY, HEAVY-DUTY INDUSTRIAL, USIP ALLEN BRADLEY 160-BMB1 DYNAMIC BRAKE MODULE 1793IB16 1793-IB16 Allen Bradley Flexbus 24 VDC Sink Input Allen Bradley 1771asbd Modul Gebraucht ALLEN-BRADLEY 1771-0B 17710B SERIES C ALLEN BRADLEY 1492-GH025 SER. B NSMP ALLEN BRADLEY 700-PLLA1 SER. B MECHANICAL LATCH UNIT * USED * Allen Bradley 140M-C-TE 140M-D8E ALLEN BRADLEY 800T-FXP16XA1 SER N SELECTOR SWITCH ALLEN BRADLEY 1771-OBD SER. B 10-60VDC OUTPUT MODULE 1771-OBD/B ALLEN BRADLEY 8-592 SER B PLUG IN MODULE *USED* Allen Bradley 193-A124 rele 66-110 A. Made in USA. ALLEN BRADLEY 700-P200A1 SER. A AC RELAY 115-120V (AS PICTURED) * USED * Allen Bradley 2A83 Coil 240 V 60 HZ Used MIssing Screw 您生產(chǎn)中急需實(shí)現(xiàn)的功能與設(shè)備就是我們努力的方向與動(dòng)力。 我們秉承“以誠(chéng)信為本,服務(wù)為先”互利共贏和諧共享服務(wù)于客戶(hù)。 暢銷(xiāo)產(chǎn)品多樣化美國(guó)-AB電氣自動(dòng)化、美國(guó)-ABB機(jī)器人備件、法國(guó)-施耐德、德國(guó)-西門(mén)子、德國(guó)-力士樂(lè)、美國(guó)-?怂共_等為客戶(hù)提供多種方案;歡迎來(lái)電咨詢(xún)! 鴻飛達(dá)-小葉 QQ:2851617301 電話(huà):15306977014 郵箱:2851617301@qq.com 公司名稱(chēng):福建鴻飛達(dá)自動(dòng)化科技有限公司 公司地址:福建省福州市高新區(qū)烏龍江大道正榮財(cái)富中心SOHO 3座八層 控制閥選型的原則根據(jù)工藝條件,選擇合適的結(jié)構(gòu)形式和材料。根據(jù)工藝對(duì)象的特點(diǎn),選擇控制閥的流量特性。根據(jù)工藝操作參數(shù),選擇合適的控制閥口徑尺寸。根據(jù)工藝過(guò)程的要求,選擇所需要的輔助裝置。合理選擇執(zhí)行機(jī)構(gòu)。執(zhí)行機(jī)構(gòu)的響應(yīng)速度應(yīng)能滿(mǎn)足工藝對(duì)控制行程時(shí)間的要求:所選用的控制閥執(zhí)行機(jī)構(gòu)應(yīng)能滿(mǎn)面足閥門(mén)行程和工藝對(duì)泄露量等級(jí)的要求。在某些場(chǎng)合,如選用壓力控制閥(包括放空閥),應(yīng)考慮實(shí)際可能的壓差進(jìn)行適當(dāng)?shù)姆糯,即要求?zhí)行機(jī)構(gòu)能提供較大的作用力。 |
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