Valavu Yoyambira

A valavundi chipangizo chowongolera chingwe chamadzimadzi. Ntchito yake yayikulu ndikulumikiza kapena kudula kayendedwe ka payipi, kusintha njira yoyendera ya payipi, kusintha kuthamanga ndi kuyenda kwa payipi, ndikuteteza ntchito yanthawi zonse ya payipi ndi zida.

一.Kugawa ma valve

Malinga ndi ntchito ndi ntchito, mankhwalawa akhoza kugawidwa m'magulu awiri:

1. Valavu yozimitsa: dulani kapena kulumikiza cholumikizira mapaipi. Monga: valavu ya chipata, valavu yozungulira, valavu ya mpira, valavu ya gulugufe, valavu ya diaphragm, valavu ya pulagi.

2. Valavu yowunikira: letsani kuti sing'anga yomwe ili mu payipi isayende kumbuyo.

3. Valavu yogawa: sinthani njira yoyendera ya cholumikizira, gawani, lekanitsani kapena sakanizani cholumikizira. Monga mavavu ogawa, zotchingira nthunzi, ndi mavavu a mpira a njira zitatu.

4. Valavu yowongolera: sinthani kuthamanga ndi kayendedwe ka chinthu cholumikizira magetsi. Monga valavu yochepetsera kuthamanga, valavu yowongolera, valavu yotulutsa mpweya.

5. Valavu yotetezera: imaletsa kupanikizika kwapakati pa chipangizocho kuti kupyole mtengo womwe watchulidwa, ndipo imateteza kupsinjika kwambiri.

二Magawo oyambira avalavu

1. M'mimba mwake mwa valavu (DN) mwadzina.

2. Kupanikizika kwapadera kwa valavu (PN).

3. Kuthamanga ndi kutentha kwa valavu: Pamene kutentha kwa valavu kukupitirira kutentha kofunikira kwa kuthamanga kwapadera, kuthamanga kwake kwakukulu kogwira ntchito kuyenera kuchepetsedwa moyenerera.

4. Kusintha kwa gawo la kuthamanga kwa valavu:

5. Njira yogwiritsira ntchitovalavu:

Ma valve a mafakitale amagwiritsidwa ntchito mu mafuta, makampani opanga mankhwala, zitsulo, mphamvu zamagetsi, mphamvu za nyukiliya ndi mafakitale ena. Zinthu zomwe zimadutsamo zimaphatikizapo mpweya (mpweya, nthunzi, ammonia, mpweya wa malasha, mpweya wa mafuta, mpweya wachilengedwe, ndi zina zotero); zakumwa (madzi, ammonia wamadzimadzi, mafuta, asidi, alkali, ndi zina zotero). Zina mwa izo zimawononga ngati mfuti zamakina, ndipo zina zimakhala ndi mphamvu zambiri zowononga.