Nkhani

Pamene Zonel Filtech imathandizira makasitomala kuwongolera otolera fumbi, ena a iwo adadandaula kuti machitidwe otsuka awo.thumba fyuluta nyumbasi ntchito bwino ngakhale iwo ntchito mpweya kutsogolera chitoliro pa mpweya kuwomba chitoliro, komanso ndi venturi, komanso ndi kuthamanga olondola kwa mpweya wothinikizidwa, kotero iwo sangathe kupeza njira kuwongolera kuyeretsa ntchito.

Atasanthula dongosolo lawo loyeretsa, akatswiri a Zonel adapezeka chifukwa chachikulu ndikuti mtunda pakati pa chitoliro chawo chotsogolera mpweya kupita ku pepala la chubu la thumba siwolondola. Ngati mtunda uli waukulu kwambiri, mpweya ukhoza kuwomba ena ku pepala la chubu la thumba m'malo mwa matumba a fyuluta; M'malo mwake, ngati yaying'ono kwambiri, mpweya wopanikizidwa sungathe kutsogolera mpweya wokwanira kunja kupita kumatumba a fyuluta, zotsatira zoyeretsa sizingakhale zabwino.

Koma mungatanthauzire bwanji mtunda uwu (H1 muzojambula zotsatirazi)?

１.Choyamba, muyenera kufotokozera mtengo wapakati wa Øp mujambula.
Monga mwachizolowezi, timawerengera Øp ndi njira iyi:
Øp=(C*D^2/n) ^1/2
C=Coefficient, monga mwachizolowezi sankhani 50% ~ 65%.
D= valavu yotulutsa valavu ya pulse, monga mwa nthawi zonse mofanana ndi chitoliro chowombera mpweya.
n = nambala yachikwama cha fyuluta pamzere uliwonse (kuyeretsa ndi valavu yofanana ya jet)
Monga mwachizolowezi, C timasankha 0,55.
Nthawi zambiri, mpweya wotsogolera chitoliro m'mimba mwake ndi 2 ~ 3 nthawi za Øp.

 

２.Tanthauzirani kutalika kwa chitoliro chotsogolera mpweya.
Chitoliro chotsogolera mpweya monga mwachizolowezi chimagwiritsa ntchito njira iyi:
L=Ck* Øp/K
C=coefficient, monga mwachizolowezi sankhani 0.2~0.25
K = ndi jet turbulence coefficient, cylindrical kusankha 0.076.
ie L= pafupifupi 0.2* Øp/0.076=2.65 Øp

 

３.Ndizosavuta kupeza tg digiri =(1/2 Øb)/H2
tg digiri = 3.4K = 0.272 (ikhoza kuchitidwa ngati nthawi zonse)
Chifukwa chake, sankhani digirii 15.

 

Mwachitsanzo:
Ngati sankhani valavu ya jet ya 3” yomizidwa, chitoliro chotsogolera d=30mm, thumba la fyuluta ndi 160mm, momwe mungapezere H1.
Yankho:
Mwachiwonekere, H1=H2-L
Chifukwa chake tiyenera kufotokozera H2 ndi L.

tg digiri =(1/2 Øb)/H2=3.4K=0.272
ndiye H2=1.838 Øb

kutalika = 160 mm
Chifukwa chake H2 = 294 mm

3”monga mwachizolowezi avareji ya Øp=15 mm (akhozanso kuwerengera nthawi yokwanira ya chikwamacho, kapena malinga ndi zomwe zachitikira, zowonjezeredwa chonde pezani.)
Kuchokera pazotsatira zam'mbuyo, L=2.65 Øp, kotero L=2.65*15=40 mm
Chifukwa chake H1 = 294-40 = 254mm.

 

Kwa Qp, nthawi zambiri deta imatha kusankhidwa motere:
Kukula kwa valavu ya jet ---- Qp
3/4"----5 ~ 7mm
1 "- 6-8mm
1 1/2"----7 ~ 9mm
2 "----8 ~ 11mm
2 1/2"----9 ~ 14mm
3 "----14 ~ 18mm
4 "----16 ~ 22mm

 

Monga mwachizolowezi, pamene mapangidwe a Qp adzagawidwa m'magulu a 3 ~ 4, pafupi ndi valavu ya pulse jet, kukula kotseguka kwakukulu, ndi gulu kuti ligawitse kusiyana kwapakati pa 1mm.