Protection of submersible pump
1. Hluav taws xob
(1) Txheeb xyuas qhov ua haujlwm voltage thiab DC tam sim no ntawm lub twj tso kua mis submersible ib ntus. Qhov peb -theem voltage ntsuas los ntawm qhov ntsuas dej siab yuav tsum tau sib sau ua ke, thiab nws yuav tsum yog 340 420v. Qhov peb -theem DC tam sim no ntsuas los ntawm clamp DC ammeter yuav tsum yog qhov sib koom ua ke, thiab nws yuav tsum yog 0.5 1 npaug ntawm DC tam sim no ntxiv.
(2) Regularly review the thermal insulation resistance of submersible pump to ground. After 4 6h of abnormal operation, stop the machine and measure the insulation resistance of motor winding to ground with a megger, which shall be greater than 0.5m Ω. For submersible pumps that have been out of service for a short time, such review should also be made before use.
(3) Ua ntej pib lub tshuab, xyuas seb qhov ua tau zoo ntawm cov thermal relay thiab lwm yam kev thaiv thaiv kev ua haujlwm yog txawv txav.
(4) Tshawb xyuas cov kab hluav taws xob puas. Raws li rau cov roj immersed submersible electric twj tso kua mis, them sai sai rau kev puas tsuaj ntawm cov roj to ntawm hluav taws xob twj tso kua mis rau cable rwb thaiv tsev roj hmab.
2. Saum toj no tshuab
(1) Saib xyuas cov neeg kho tshuab foob ntawm lub twj tso kua mis submersible ib ntus. Qhib cov roj qhov ntsia hlau thiab tso cov roj ntau ntau. Yog tias cov roj muaj cov dej noo, qhia tias lub foob ntawm lub pob zeb sib tsoo sab sauv (lossis qis dua kev sib tsoo) tau xau dej. Hloov lub thawv ntim khoom thiab tawm ntawm cov roj khov tshiab. Yog tias tsis muaj roj nyob rau hauv lub qhov roj los yog cov roj tsis zoo, sau cov roj (No. 5 los yog No. 10 mechanical oil, sewing oil or transformer oil) los yog hloov cov roj tshiab.
(2) Rau lub twj tso kua mis submersible nrog tshiab los yog hloov kev sib tsoo thaiv, lub sealing ntsaws ntawm cov dej withered yuav tsum tau tig tom qab 50 teev ntawm kev ua haujlwm, thiab cov roj (dej) yuav tsum tau tshuaj xyuas. Yog< 5ml,="" the="" sealing="" deformity="" shall="" be="" indicated,="" and="" it="" can="" be="" used="" continuously.="" if=""> 5ml, the sealing plug shall be tightened after draining the oil (water), and the second review shall be conducted after 50 hours of continuous operation. If it is still >5m1, qhov teeb meem sealing yuav tsum tau qhia. Rau cov twj siv submersible, tus nqi nthuav tawm yuav tsum tau tshuaj xyuas ib hlis ib zaug, uas yuav tsum tsawg dua 25ml, thiab tuaj yeem siv tsis tu ncua tom qab tso dej.
(3) Check the vibration condition of the water pump motor, and the synchronous speed of the motor is N0 = 3000r / min, 1500r / min, 1000r / min and 750r / min, so as to ensure that the corresponding vibration value is δ Less than or equal to 0.06mm,0.1mm,0.13mm,0.16mm.
(4) Tsis tu ncua xyuas cov kabmob ntawm cov twj tso kua mis submersible. Xyuas seb cov kabmob puas muaj roj tsawg, seb puas muaj lub nplhaib sab hauv lossis lub nplhaib sab nraud, thiab seb cov kabmob puas yuav tsum tau hloov (nws yog qhov zoo tshaj los hloov cov kabmob ntawm cov dej ntim hluav taws xob ib xyoos ib zaug).
3. Lwm yam saum toj no
(1) Nco ntsoov xyuas seb cov dej nkag hauv lub hau npog ntawm lub twj tso kua mis submersible thaiv los ntawm cov nroj tsuag thiab av thiab seb lub impeller puas raug mob.
(2) Lub twj tso kua mis submersible uas tsis tsim nyog nyob rau lub sijhawm luv luv yuav tsum muab tso rau hauv qhov chaw nres nkoj, ntxuav thiab qhuav, thiab tom qab ntawd muab tso rau hauv qhov chaw qhuav thiab qhov cua kom khaws cia.
(3) Tom qab lub twj tso kua mis submersible tau ua haujlwm rau 1 2 xyoos, cov tub ntxhais rub lub cev yuav tsum tau tshuaj xyuas thiab ntxuav. Yog tias muaj cov av, muab tso rau hauv lub cev muaj zog hauv 0.2 feem pua Haiou TX-10 lossis 105 xab npum hmoov tov, ua kom sov rau li 100 degree thiab do cov tshuaj kom maj mam yaj cov av. . Tom qab cov av tau muab tshem tawm rau 1 2H, txhim kho thiab marinate nws nrog cov kais dej qis, tshem cov hlaws dej, thiab ziab nws hauv qhov cub kub.
3, Kev tu cov twj submersible
1. Kev ua txhaum ntau, ua rau thiab kev daws teeb meem ntawm lub tshuab hluav taws xob submersible
2. Rewinding ntawm lub cev muaj zog rotor winding
(1) Txhawm rau tiv thaiv lossis txo qhov tsis hnov tsw ntawm kev sib hloov los ntawm qhov yuam kev disassembly, ua ntej sib dhos lub cev muaj zog, kos qhov sib koom ntawm lub hauv ntej thiab nram qab kawg thiab lub hauv paus nrog lub accumulator, thiab disassemble nws raws li nws yog tom qab trimming. .
(2) Thaum tshem cov winding, xyuam xim rau npog cov tub ntxhais hlau kom tiv thaiv cov silicon wafer los ntawm warping thiab hloov, thiab cov tsos ntawm cov hniav lub kaum sab xis burrs. Cov kauj ruam tshem tawm zoo dua yog: thawj zaug txiav lub kauj ntawm ib kawg nrog kab pheeb ces kaum, thiab tom qab ntawd rub nws tawm ntawm lwm qhov kawg nrog cov pliers.
(3) Cov pwm winding yuav tsum tau ua raws li qhov yuav tsum tau ua kom cua lub kauj, txhawm rau xyuas kom meej qhov kev tshem tawm sab nraud ntawm winding kawg thiab qhov ntxig ntawm lub kauj rau hauv lub qhov.
(4) The "three-dimensional method" shall be adopted for wire embedding, that is, after embedding one phase, another phase shall be embedded to make the end form a "three-dimensional": pay attention when embedding: ① the position of the first two "lifting handle" coils shall be appropriate to ensure that the rotor core will not be scratched when embedding other coils; ② Use less scribing board when drawing the bottom coil to avoid damaging the coil insulation; ③ Interphase insulating paper shall be inserted in place, and the two-phase coils shall be wide and leave; ④ For oil immersed and water filled motors, the coil in the slot (including the end) shall not be compacted, so that the oil (water) can be fixed to dissipate heat for the winding.
(5) daws qhov teeb meem ntawm kev sib koom ua ke. Tshem tawm ntawm daim tawv nqaij thiab txheej ntawm qhov sib koom ua ke, thiab tshem tawm cov xim nominal thiab oxide txheej ntawm tooj liab hlau; Tom qab ntawd, txuas txuas ntxiv los ntawm kev sib txuas, thiab tshem tawm cov ces kaum ntse, burrs thiab cov dej txuas txuas ntxiv; Tom qab ntawd ib nrab Pob 2 txheej nrog polyethylene daim kab xev, ib nrab pob 6 txheej nrog butyl tus kheej - daim kab xev stretched txog ob zaug (qhov kev sib koom yuav tsum ceev faj thiab seamless), thiab pib ib nrab pob 2 txheej nrog polyethylene nplaum daim kab xev los yog cesium fiber ntau adhesive daim kab xev li mechanical cover.
(6) Keep dirty during disassembly. Carefully adjust the "limit screw" at the bottom to make the screw rotate freely, and tighten the locking screw nut. Install the end cover according to the original sealing position, and be careful not to damage the rubber sealing ring in the inner hole of the sealing box. When the whole body sealing box is disassembled, it can only be pushed in slightly without knocking.
4, Sim disassemble lub cev muaj zog
(1) Pneumatic attempt. Use 2kg / mm2 air pressure to check whether the "O" rubber sealing ring at the joint of each complete machine and the two sealing covers in the whole body sealing box are breathable. After that, add mechanical oil into the high and low covers.
(2) DC resistance. The resistance value of each phase winding of the rotor shall be within ± 2 percent of the error scale of the uniform value of three-phase winding resistance.
(3) Insulation resistance. It should be > 5m Ω at normal temperature.
(4) Mechanical xyuas. Thaum lub twj tso kua mis hluav taws xob khiav, lub suab ntawm txhua lub ntsiab lus yuav tsum txawv txav.
(5) Shipboard sim. Lub nkoj nkoj DC thiab nkoj nkoj poob hauv qhov hluav taws xob ntxiv yog yuav luag zoo ib yam li ntawm cov thawj lub cev muaj zog. Rau qhov tsis tshua siv 2.2kW submersible electric twj tso kua mis, lub nkoj nkoj DC yog 1.8 2.5A, thiab lub nkoj poob qis dua 0.5KW.
(6) Load sim. Tom qab khiav hauv dej rau 4h, qhov kub ntawm lub cev muaj zog yuav tsum tsawg dua lossis sib npaug li 75 degree.
(7) Braking attempt. Tie the impeller and connect it to 100V phase exchange power supply. The DC value of each phase shall be within ± 10 percent of the uniform value of three-phase DC.