Inji for aunawa ruwa danko. rotational viscometer

A danko daban-daban da taya aka auna ta musamman na'urorin - viscometers. Bisa ga halaye da kuma zane da dama iri data na'urorin. Daya ne Rotary viscometer iya zuwa kimanta da permeability na matsakaici.

iri-iri na kayan

A kayan amfani da su domin auna da danko daga cikin ruwa, za a iya raba uku da manyan kungiyoyin:

• Capillary viscometer.

• Inji viscometer.

• Rotational viscometer.

La'akari da kowane daga cikin iri a cikin mafi daki-daki.

inji na'urorin

Category inji viscometers wakiltar dama daban-daban na'urorin, da manufa na wanda dogara ne a kan inji Properties na taya. Yana iya zama mita rawa, kumfa, ball iri. Idan na farko iri biyu ana fi amfani a cikin dakin gwaje-gwaje, da karshen da aka samu a cikin gida. Its aiki manufa dogara ne a kan Galileo ta samu.

Ciki da na'urar akwai wani "hukuma", inda ball ne. Bayan ciko da na'urar da ruwa, da danko ne da za a yi niyya, da ball da dama. Yana ƙaddara daidai lokacin da ake bukata domin ball to fada ga lamba kushin. Dangi danko aka ƙaddara bisa ga lokaci tazara.

Na'urorin kamar capillary

Capillary viscometer a cikin zane ne na bakin ciki tube da aka sani diamita. Test ruwa gudana ta hanyar wannan bututu. A wannan ruwa a yarda ta cikin tube ma tare da wani ya fi girma diamita, ciki wanda aka halitta da wani capillary sakamako. Mafi sau da yawa, da ruwa gudana da nauyi (watau saman-saukar). Amma da wucin gadi matsa lamba da aka halitta a cikin wasu kida. Yana kuma auna lokaci a lokacin da ruwa ke zube a duka biyu shambura. Bugu da ari vyschityvaetsya su bambanci. A danko darajar ne na gwargwado ga darajar wannan bambanci.

irin wannan na'urorin ne mai sauki, amma da manyan size. Wani ta drawback ne cewa rabo na daukar danko na ruwa kada wuce 12 kPa · s. Wannan darajar yayi dace da taya cewa gudãna daga ƙarƙashinsu kyau. More m ruwa, ko da ciwon lumps, a cikin wannan harka, ba za a iya auna.

Rotational viscometer: aiki

Structure gauges na irin wannan ne Silinda wanda aka sanya a cikin Sphere. A ciki Sphere motsi a wani gudu saboda da alaka actuator.

Tsakanin Silinda da wani Sphere ne a sarari wanda aka cika da gwajin ruwa. A wannan yanayin da juriya ga motsi Sphere dabam. A cikin wadannan na'urorin shi ne auna ruwa juriya da kuma dogaro da rotational gudun. Wadannan sigogi suna gyarawa a sakamakon gwajin.

Ciki Silinda ne ba ko da yaushe Sphere. Yana za a iya maye gurbinsu da Disc mazugi farantin ko wani Silinda. A nisa tsakanin matsanancin da ciki jiki ne 'yan millimeters, don ƙirƙirar gogayya da karfi. A juriya darajar aka ƙaddara da na'urori masu auna sigina. A mafi suka samu, da mafi darajar. Haka kuma, da naúrar farashin zai karu.

Rotary viscometer domin taya danko wanda jeri daga dubban miliyoyin Pa * s. ciki kudi na juyawa ne mai muhimmanci. Ana rinjayar da ji daidaito. A kasan gudun, da mafi m da ji. Na'urori tare da wani m gudun kusurwa juyawa ne sosai m, amma suna da tsada.

Nau'in na Rotary viscometers

A sama-aka bayyana a aiki manufa da na'urar halin da Brookfield viscometer. Wannan shi ne mafi sauki na'urar da irin wannan mita. Amma ba ko da yaushe motsa a cikin jiki. A wasu lokuta, da m Silinda aka juya su. Wannan shi ne dalilin da ya sa Rotary viscometer iya zama na biyu iri: wani ajali Silinda da torsion mita.

Inner jiki torsion viscometers aka dakatar a cibiyar a kan wani na roba kirtani. Lokacin da juyawa da m Silinda fara matsawa da kuma daukar ruwa. Kuma idan aka juya su, da Twisted Silinda. A kwana na karkatarwa daga ciki Silinda aka ar da karfin juyi na wani juyawa m gogayya.

ji kuskure ya auku saboda da kasa na ciki Silinda. Daban-daban malamai sun yi kokarin warware wannan matsala a yadda. Mafi sau da yawa, kasan sanya concave. Lokacin cika ruwa zuwa cikin concavity na iska ya zauna. Saboda haka, gogayya da kasa rage-rage. Masana kimiyya Berthold Hatschek, Couette ciki Silinda sanya shi a cikin matsara zobe. Wannan rage haukan kogi na ta ƙare. Volorovich amfani da wani babban amma kunkuntar Silinda. The kuskure saboda kasan ya zama negligible. A yawan masana kimiyya sun yi amfani da na'urorin a cikin abin da nesa tsakanin cylinders ya sosai kananan. A kasa na na'urar da aka ba ta cika da ruwa.

Rotary viscometer a cikin zane yana da yawa bambance-bambancen karatu. Amma ya ko da yaushe yana da irin abũbuwan amfãni a matsayin sassauci, kananan size, low daidaito da kuma low cost. Saboda wadannan halaye na kayan aiki da kuma shi ya zama haka rare.