OK Slurry blade dhayamita inlet side Muchikamu chinopinza chekutora pakati, senzira inoyerera yedenderedzwa rakanyorwa , rakanyorwa denderedzwa centroid rakapetwa kaviri chinhambwe cheaxis yerutivi rwekunopinda rweblade dhayamita D1, inoratidzwa muMufananidzo 5- 5 .
Diameter D1 yerutivi rwemukova weblade inogona kuwanzozivikanwa kukurumidza kukurumidza ns: Kazhinji, kuwedzera huwandu hwemashizha kunogona kuvandudza kuyerera kwemvura, kuwedzera kwakakodzera mumusoro wepombi, asi kuwedzera huwandu hwekurasika kweshizha friction kunowedzera, kuderedza kuyerera kuburikidza nenzvimbo inoyerera .
Nokudaro, kuwedzera kwenhamba yemashizha zvakanyanya, kwete chete kuderedza kushanda uye kuita impeller cavitation performance deterioration, asiwo inokonzera pombi yekushanda curves hump (ona Chitsauko V). Iyo kona yeblade pasi pepakeji imwe chete, ichidzikisa huwandu hwemashizha, blade yega yega yemutoro inowedzera, basa reiyo yepasi mvura diversion, asi zvakare kuderedza musoro wepombi. Yakati yakaderera pane nhamba yekutenderera kwepombi, kuti iitike muchimiro chehurefu hwepakati pepakati, inoratidzwa muMufananidzo 5-10.
Izvi zvinovimbisa huwandu hwakakwana hwemashizha, asiwo kudzivirira iyo impeller inlet blockage. 8 Ita shuwa kuti blade inlet angle β1 yakaiswa Angle yeblade inlet yakaiswa pamusuwo weblade, blade kumeso kwe tangent (kunyatso kutaura, iyo yepamusoro inofanira kunge iri mutsetse wekuyerera weblade tangent bone) angle pakati pe circumferential tangent, sezvinoratidzwa mumufananidzo 5-6. Kufungidzira kuti mvura inotenderera inoyerera impeller ,slurry pombi mugadzirinepakona yekona yevalocity inoratidza: Pakusarudza vane inlet angle β1 nzvimbo apo kona ye △ β sarudza chikonzero:
( 1 ) mvura isati yapinda mu impeller , yatova pasi pekamuri yekusveta , pesvedzero ye impeller shaft kana kutenderera kunotenderera (kureva pre- spin ), kuwedzera angle yekurwisa ndiko kufunga nezve pesvedzero ye pre-swirl kusvika. kuderedza kukanganisa kwekurasikirwa kwemvura.
( 2 ) inotora kona yakanaka yekurwisa, blade yekupinda nayo inotutirana coefficient. , Yakaderedzwa, kureva kuwedzera inlet nzvimbo yeblade, kuvandudza kuyerera kwemvura, inogona kuvandudza zvishoma pombi cavitation performance.
Paconical chubhu pombi yekusveta kamuri, mvura inopinda mu impeller isati yafanorongedzerwa idiki, asi muhafu yespiral suction chamber iri. Prerotator yakakura, saka kona yekurwisa inofanirwa kutariswa pakusarudza iyo suction kamuri chimiro muchimiro cheakabatwa. Angle yepombi cavitation kuramba kune imwe nhanho.
Miedzo yakaratidza kuti iyo yakanaka angle yekurwiswa, kurwisa kwekona shanduko papombi cavitation kushorwa haina mhedzisiro, kuwedzera kona yekurwisa kunogona kunonoka kuyerera kwepombi mamiriro mune yakakura anti-cavitation performance paunenge uchishanda kukurumidza kuparara. Nekudaro, kana iyo yakanaka kona yezuva inopfuura 200, ichakonzera kuderera kwekubudirira. Kana iwe ukatora iyo yakaipa angle yekurwiswa, pombi's cavitation resistance yakadzikira zvakanyanya.
Nguva yekutumira: Jul-13-2021