Zaren toshe-in na'ura mai aiki da karfin ruwa bawul LADRV-10

hali

Abin da ake kira ƙaramin bawul ɗin sarrafa kwarara, kamar yadda sunansa ke nunawa, bawul ɗin sarrafawa ne tare da ƙaramin ƙarfin kewayawa.

Ƙarfin wutar lantarki na bawul shine ma'aunin ƙarfin bawul a ƙarƙashin yanayi ɗaya. Kimar C tana wakiltar China. An bayyana shi azaman: lokacin da bawul ɗin ya cika buɗewa, lokacin da bambancin matsa lamba kafin da bayan bawul ɗin shine 1kg / cm2 kuma matsakaicin nauyi shine 1g / cm3, matsakaicin matsakaici (m3 / hr) yana gudana ta cikin bawul kowane sa'a. Don ruwa mara daidaituwa, ƙarƙashin yanayin cikakken tashin hankali (lokacin da lambar Reynolds ta isa, Re> 10 5 don ruwa; Re> 5.5 × 104 don iska)

Inda:

△ p-matsa lamba bambanci kafin da bayan bawul (kg/cm2) υ-matsakaici tsanani (g/cm3)

Q-Media kwarara (m3/h)

Amurka da sauran ƙasashe suna amfani da ƙimar c don nuna ƙarfin kwararar bawul. Ƙididdiga I, E da C waɗanda aka amince da su a duniya galibi suna da alaƙa da wutar lantarki suna amfani da ƙimar Av don nuna ƙarfin kwararar bawuloli. Alakar musulunta a tsakaninsu ita ce kamar haka;

Cv = 1.17 Cv = 10 6 / 24Av C = 10 6 / 28Av

Ƙarfin wutar lantarki na bawul kawai ya dogara da tsarin bawul ɗin kanta. Lokacin ƙididdige ƙarfin da ake buƙata na bawul ɗin da ake buƙata, ya kamata a lura cewa yanayin kwarara a cikin bawul ɗin zai bambanta sosai lokacin da matsakaici ya bambanta ko yanayin kwarara ya bambanta.

A cikin yanayin ƙananan ƙwayar cuta, musamman maɗaurin ruwa da ƙananan matsa lamba, babban matsi na ruwa sau da yawa shine laminar ko gauraye yanayin laminar da rudani. A cikin kwararar laminar, akwai dangantaka ta layi tsakanin matsakaicin matsakaici ta hanyar bawul da bambancin matsa lamba kafin da bayan bawul. A cikin yanayin gauraye na kwararar laminar da kwararar tashin hankali, tare da haɓaka lambar Reynolds, koda kuwa bambancin matsa lamba ya kasance koyaushe, adadin dielectric da ke gudana ta cikin bawul ɗin zai ƙaru. A cikin cikakkiyar tashin hankali, ƙimar kwarara ba ta canzawa tare da lambar Reynolds. Duk da haka, zaɓin ƙananan bawul ɗin sarrafa kwararar ruwa har yanzu ana aiwatar da su ta hanyoyin gargajiya da ƙididdigar ƙididdiga. Koyaya, ƙimar da aka ƙididdige ta bambanta sosai daga ainihin ƙimar. Dangane da bayanan, lokacin da CV ya kasance ƙasa da Cv=0.01, ana amfani dashi azaman ma'aunin iya aiki ne kawai kuma yana da mahimmancin tunani. Ya kamata a ƙayyade ainihin ƙarfin kewayawa bisa ga