Buku la Ntchito ndi Kukonza-Cast Steel Gate Valves

3. Kusungirako, kukonza, Kuyika ndi ntchito

3.1 Kusunga ndi kukonza
3.1.1 Mavavu amayenera kusungidwa m'chipinda chowuma komanso cholowera mpweya wabwino.Mapeto a ndimeyi ayenera kulumikizidwa ndi zophimba.
3.1.2 Ma valve omwe amasungidwa kwa nthawi yayitali ayenera kufufuzidwa ndi kutsukidwa nthawi zonse, makamaka kuyeretsa nkhope zokhala pansi kuti zisawonongeke, ndipo malo omalizidwa ayenera kuphimbidwa ndi dzimbiri zoletsa mafuta.
3.1.3 Ngati nthawi yosungirako ikupitirira miyezi 18, ma valve ayenera kuyesedwa ndipo zolemba ziyenera kupangidwa.
3.1.4 Mavavu oikidwa ayenera kuyang'aniridwa ndi kukonzedwa nthawi zonse.Mfundo zazikuluzikulu zokonzetsera ndi izi:
1) Kusindikiza nkhope
2) tsinde la valve ndi mtedza wa tsinde la valve.
3) Kupakira.
4) Kusokoneza mkati mwa thupi la valve ndi bonnet ya valve
3.2 Kuyika
Musanakhazikitse, onetsetsani kuti chizindikiritso cha vavu (monga chitsanzo, DN, 3.2.1PN ndi zinthu) zalembedwa molingana ndi zofunikira zamapaipi.
3.2.2 Musanakhazikitse, fufuzani mosamala ndime ya valve ndi nkhope yosindikiza.Ngati pali dothi, yeretsani bwino.
3.2.3 Musanakhazikitse, onetsetsani kuti mabawuti onse amangiriridwa mwamphamvu.
3.2.4 Pamaso unsembe, onetsetsani kulongedza ndi wothinikizidwa mwamphamvu.Komabe, kuyenda kwa tsinde la valve sikuyenera kusokonezedwa.
3.2.5 Malo oyika valavu ayenera kuthandizira kuyang'anira ndi kugwira ntchito.Malo abwino ayenera kukhala oti payipi ikhale yopingasa, gudumu lamanja lili pamwamba, ndipo tsinde la valve yoyimirira.
3.2.6 Kwa valavu yomwe nthawi zambiri imatsekedwa, sikoyenera kuyiyika pamalo omwe mphamvu yogwira ntchito imakhala yayikulu kwambiri kuti musawononge tsinde la valve.
3.2.7 Mavavu a socket welded ayenera kukwaniritsa zofunikira izi akamatenthedwa kuti ayikidwe pamapaipi pamalopo:
1) kuwotcherera kuyenera kuchitidwa ndi wowotcherera yemwe ali ndi satifiketi yoyenerera yowotcherera yovomerezeka ndi Boma la Boiler ndi Pressure Vessel Authority;kapena wowotcherera yemwe walandira satifiketi yoyenerera yowotcherera yomwe yafotokozedwa mu ASME Vol.Ⅸ.
2) Njira zowotcherera ziyenera kusankhidwa monga momwe zafotokozedwera m'buku lotsimikizira za zinthu zowotcherera.
3) Kapangidwe kake, magwiridwe antchito amakina komanso kukana kwa dzimbiri kwa zitsulo zodzaza ndi zowotcherera zimayenera kugwirizana ndi chitsulo choyambira.
3.2.8 Valavu nthawi zambiri imayikidwa, kupsinjika kwakukulu chifukwa cha zothandizira, zowonjezera ndi mapaipi ziyenera kupewedwa.
3.2.9 Pambuyo pakuyika, pakuyesa kukakamiza kwa mapaipi, valavu iyenera kutsegulidwa kwathunthu.
3.2.10 Potengerapo: ngati payipi ili ndi mphamvu zokwanira kunyamula kulemera kwa vavu ndi torque ya ntchito, ndiye kuti palibe potengera komwe kumafunikira, apo ayi valavu iyenera kukhala ndi poyambira.
3.2.11 Kukweza: musagwiritse ntchito gudumu lamanja pokweza ndi kukweza valavu.
3.3 Ntchito ndi kugwiritsa ntchito
3.3.1 Panthawi yautumiki, chipata cha valve chiyenera kutsegulidwa kapena kutsekedwa kwathunthu kuti zisawonongeke pamwamba pa mphete ya mpando ndi chipata cha valve chifukwa cha sing'anga yothamanga kwambiri.Sichingagwiritsidwe ntchito kusintha mphamvu yothamanga.
3.3.2 Mukatsegula kapena kutseka valavu, gwiritsani ntchito gudumu lamanja m'malo mwa lever yothandizira kapena gwiritsani ntchito chida china.
3.3.3 Pakutentha kogwira ntchito, onetsetsani kuti kuthamanga kwanthawi yomweyo kumakhala kotsika kuposa 1.1nthawi zomwe zimagwira ntchito pakukakamiza-kutentha kwa ASME B16.34.
3.3.4 Zida zothandizira chitetezo ziyenera kuikidwa papaipi kuti valavu igwire ntchito pa kutentha kwa ntchito kuti isapitirire kupanikizika kwakukulu kovomerezeka.
3.3.5 Kugwedeza ndi kugwedeza valavu ndikoletsedwa panthawi yoyendetsa, kuika ndi kugwira ntchito.
3.3.6 Kuwonongeka kwa madzi osasunthika, mwachitsanzo, kuwonongeka kwa madzi ena kungayambitse kuwonjezeka kwa voliyumu ndi kuchititsa kuti pakhale kuthamanga kwa ntchito, motero kuwononga valavu ndikupangitsa kuti madziwo alowe, choncho, gwiritsani ntchito zida zoyenera zoyezera kuti muthetse kapena kuchepetsa zinthu zomwe zingayambitse kuwonongeka. wa madzimadzi.
3.3.7 Ngati madziwa ndi condensate, izi zidzakhudza ntchito ya valve, gwiritsani ntchito zida zoyenera zoyezera kuti muchepetse kutentha kwa madzi (mwachitsanzo, kutsimikizira kutentha koyenera kwa madzi) kapena m'malo mwake ndi mtundu wina wa valve.
3.3.8 Pazinthu zamadzimadzi zomwe zimatha kuyaka zokha, gwiritsani ntchito zida zoyezera zoyenera kuti mutsimikizire kuti pali mphamvu yozungulira komanso yogwira ntchito kuti isapitirire poyatsira (makamaka zindikirani kuwala kwadzuwa kapena moto wakunja).
3.3.9 Pakakhala madzi oopsa, monga kuphulika, kupsa.Zowopsa, zopangidwa ndi okosijeni, ndizoletsedwa kutengera kulongedza mopanikizika (ngakhale valavu ili ndi ntchito yotere).
3.3.10 Onetsetsani kuti madziwo sali odetsedwa, omwe amakhudza ntchito ya valve, alibe zolimba zolimba, mwinamwake zida zoyenera zoyezera ziyenera kugwiritsidwa ntchito kuchotsa dothi ndi zolimba zolimba, kapena m'malo mwake ndi mtundu wina wa valve.

3.3.11 Kutentha kovomerezeka kogwira ntchito: