下面比較當(dāng)系統(tǒng)中定速泵（或調(diào)速泵）單獨(dú)運(yùn)行、2臺(tái)定速泵（或2臺(tái)調(diào)速泵）并列運(yùn)行、1臺(tái)定速泵與1臺(tái)調(diào)速泵并列運(yùn)行的狀況。1定速泵（或調(diào)速泵）單獨(dú)運(yùn)行改變泵本身性能曲線的方法有變速調(diào)節(jié)、動(dòng)葉調(diào)節(jié)和汽蝕調(diào)節(jié)。改變管路特性曲線的方法主要有出口節(jié)流調(diào)節(jié)、入口節(jié)流調(diào)節(jié)，而普遍采用的調(diào)節(jié)方式是出口端節(jié)流調(diào)節(jié)，它是利用改變閥門開度來進(jìn)行調(diào)節(jié)的方式。一般定速泵為出口端節(jié)流調(diào)節(jié)，調(diào)速泵為變速調(diào)節(jié)。鍋爐的啟動(dòng)時(shí)間較長，而且將鍋爐的負(fù)荷帶至41t／h的整個(gè)提壓過程按機(jī)側(cè)的要求是逐步達(dá)到的，也就是說在這個(gè)過程中如果采用調(diào)速泵可以僅僅靠改變轉(zhuǎn)速就能滿足機(jī)爐的啟動(dòng)要求。
執(zhí)行器IC20-60Q3T芯科技，芯創(chuàng)新；88300402
0190899102 HOSE TERMOPLASTIC.
0191015102 CONTACTOR
0191052110 VOLTMETER
0191059116 Ampere meter
0191085203 CAPACITOR
0191085206 CAPACITOR
0191321104 CLAMP PLAST. D=12 STAUFF
0191418074 SPACING SLEEVE
0191496114 WEDGE
0191561114 INSULATING WASHER
0191574114 INSULATED SLEEVE
0191812101 Cable MKFR
0191812102 Cable MKFR
0191812104 Cable MKFR以質(zhì)量打造品質(zhì)，用誠信共贏未來！》
0191812105 Cable MKFR
0191954101 RUBBER HOSE
0192058101 THERMAL COMPOUND
0192108201 SOLENOID VALVE
0192190051 PRESSURE COIL
0192200103 Hose Nipple
0192207111 Y-steel bearing UCP 214
0192230107 Blind Plug
BALLUFF BTL-5-R1-M0610-Z-MA000--S135-E4 (Surplus New not in factory packaging)
BALLUFF BIS-F-450-000-A (Used, Cleaned, Tested 2 year warranty)
BALLUFF BTL2-A11-0100-P-S-32 (Surplus New not in factory packaging)
BALLUFF BMOA66RM-X63-1 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BMOA66RM-X63-1 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BIS-C-310-05 (Surplus New not in factory packaging)
BALLUFF C49BPE00PY050M CONNECTOR *NEW IN ORIGINAL PACKAGE*
BALLUFF C49BPE00PY050M CONNECTOR *NEW IN ORIGINAL PACKAGE*
BALLUFF BNI-PNT-104-105-Z015 (Surplus New In factory packaging)
BALLUFF BNS-519-D04-L12-062-10 LIMIT SWITCH BNS519D04L1206210
BALLUFF BTL5-A11-M0305-B-SU147-S32 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BES-Q08ZE-POC20B-BV06 (Surplus New In factory packaging)
BALLUFF BNS-519-101-1-WS-067 (Used, Cleaned, Tested 2 year warranty)
FREE 2 YR WARRANTY FREE US SHIPPING ON ORDERS OVER $25
BALLUFF BNS-519-101-1-WS-067 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BNS-519-101-1-WS-088 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BNS-519-101-1-WS-066 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BNS-519-101-1-WS-066 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BLE-S5-1-FS-15 (Surplus New In factory packaging)
Balluff BES-516-325-BO-C Proximity Switch BES-516-325-B0-C - New No Box
Balluff BES-516-325-BO-C Proximity Switch BES-516-325-B0-C - New No Box
BALLUFF BES-516-207-BO-E-03 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BES-516-207-BO-E-03 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BTL5-A11-M0254-Z-S32 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BNS-519-FR-60-101 (Surplus New not in factory packaging)
BALLUFF BNS-519-FR-60-101 (Surplus New not in factory packaging)
BALLUFF BES-516-359-BO-C-03 (Surplus New not in factory packaging)
燃?xì)鈮毫﹂_關(guān)，DG40VC1-5WG/B，75454579
燃?xì)鈮毫﹂_關(guān)，DG17VC1-6W/B，75455241
燃?xì)鈮毫﹂_關(guān)，DG40VC1-6W/B，75455243
燃?xì)鈮毫﹂_關(guān)，DG110VC1-6W/B，75455245
燃?xì)鈮毫﹂_關(guān)，DG300VC1-6W/B，75455246
燃?xì)鈮毫﹂_關(guān)，DG17VC1-6WG/B，75455247
燃?xì)鈮毫﹂_關(guān)，DG40VC1-6WG/B，75455249
燃?xì)鈮毫﹂_關(guān)，DG110VC1-6WG/B，75455251
燃?xì)鈮毫﹂_關(guān)，DG300VC1-6WG/B，75455252
燃?xì)鈮毫﹂_關(guān)，DG40VC9-6W/B，75456344
燃?xì)鈮毫﹂_關(guān)，DG17VC9-6W/B，75456403
燃?xì)鈮毫﹂_關(guān)，DG60VC9-6W/B，75456404
燃?xì)鈮毫﹂_關(guān)，DG150VC9-6W/B，75456405
燃?xì)鈮毫﹂_關(guān)，DG300VC9-6W/B，75456406
燃?xì)鈮毫﹂_關(guān)，DG40VC9-6WG/B，75457583
燃?xì)鈮毫﹂_關(guān)，DG500VC1-6W/B，75457730
燃?xì)鈮毫﹂_關(guān)，DG500VC1-6WG/B，75458957
燃?xì)鈮毫﹂_關(guān)，DG17VC8D-6S32，84448004
它的多項(xiàng)優(yōu)越性與我國當(dāng)時(shí)經(jīng)濟(jì)能力低下的國情相符合，在我國燃煤電廠得到了極為廣泛的應(yīng)用。而且，為了保證排放到大氣中SO2擴(kuò)散稀釋后的濃度合乎大氣環(huán)境質(zhì)量要求，煙囪高度也越來越高，目前，我國煙囪已達(dá)24m。我國每年有4多家燃煤電廠利用5多座高煙囪向大氣排放5Mt以上的SO2。由于我國采用高煙囪排放含硫煙氣及分散布點(diǎn)的政策，利用了大氣環(huán)境的自凈作用，使得含硫煙氣排放總量在逐年增大的情況下，局部地區(qū)大氣SO2濃度基本上仍得到控制。
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