Muyenera kudziwa, valavu imakhalanso ndi mkwiyo!

Kutsika kutsika kwa valve yotseka, ndibwino.Kutuluka kwa valve yosindikizira yofewa ndikotsika kwambiri.Zoonadi, zotsatira zodula ndi zabwino, koma sizimamva kuvala ndipo zimakhala zodalirika.

1. Chifukwa chiyani kumakhala kosavuta kugwedezeka pamene valavu yokhala ndi mipando iwiri ikugwira ntchito ndi kutsegula pang'ono?
Kwa pachimake chimodzi, valavu imakhala yokhazikika pamene sing'anga imathamanga yotseguka, komanso yosakhazikika pamene sing'anga imatuluka yotsekedwa.Valavu yokhala ndi mipando iwiri imakhala ndi ma valve awiri, valavu yapansi ili pamalo otsekedwa, ndipo chapamwamba cha valve chili pamalo otseguka.Mwa njira iyi, pamene valavu ikugwira ntchito potsegula pang'ono, phokoso lotsekedwa la valve ndilosavuta kuyambitsa kugwedezeka kwa valve, chifukwa chake valavu yokhala ndi mipando iwiri singagwiritsidwe ntchito pa ntchito yaing'ono yotsegula.

2. Chifukwa chiyani valavu yosindikiza pawiri sangagwiritsidwe ntchito ngati valavu yotseka?
Ubwino wa valavu yapampando wapawiri ndi mawonekedwe a mphamvu, zomwe zimapangitsa kusiyana kwakukulu, koma choyipa chake chachikulu ndikuti malo awiri osindikizira sangakhale olumikizana bwino nthawi imodzi, zomwe zimapangitsa kutayikira kwakukulu.Ngati ikugwiritsidwa ntchito mwachisawawa komanso mokakamizika podula, zotsatira zake sizili zabwino.Ngakhale zambiri zakonzedwa (monga valavu yosindikizidwa kawiri), sikoyenera.

3. Ndi mtundu wanji wa valavu yowongoka yowongoka yomwe ili ndi vuto loletsa kutsekereza komanso valavu yapaulendo yomwe ili ndi ntchito yabwino yoletsa kutsekereza?
Pakatikati pa valve ya valve yowongoka ndi yowongoka, ndipo sing'angayo imakhala yopingasa mkati ndi kunja, kotero njira yothamanga mu chipinda cha valve iyenera kutembenuka ndi kubwereranso, zomwe zimapangitsa kuti njira yothamanga ya valve ikhale yovuta kwambiri (mawonekedwewo ali ngati mawonekedwe a "s").Mwanjira iyi, pali madera ambiri akufa, omwe amapereka danga lamvula ya sing'anga ndikuyambitsa kutsekeka kwa nthawi yayitali.Mayendedwe opindika a valve yoyenda ndi yopingasa.Sing'angayo imalowa ndi kutuluka mopingasa, choncho ndikosavuta kuchotsa sing'anga yodetsedwayo.Panthawi imodzimodziyo, njira yolowera ndi yosavuta ndipo malo amvula apakati ndi ochepa kwambiri, choncho anti-blocking performance ya valve yoyendayenda ndi yabwino.
4. Chifukwa chiyani tsinde la valve yowongolera sitiroko ndi yowonda kwambiri?

Zimaphatikizapo mfundo yosavuta yamakina: mikangano yayikulu yotsetsereka ndi mikangano yaying'ono.Tsinde la valavu yowongoka imasunthira mmwamba ndi pansi.Ngati kulongedza kumakanikizidwa pang'ono, kumangiriza ndodo ya valve mwamphamvu ndikutulutsa kusiyana kwakukulu kobwerera.Pachifukwa ichi, tsinde la valve limapangidwa kuti likhale laling'ono kwambiri, ndipo kulongedzako nthawi zambiri kumagwiritsidwa ntchito ndi PTFE kulongedza ndi coefficient yaing'ono yowonongeka, kuti achepetse kulakwitsa kobwerera.Komabe, vuto ndilokuti tsinde la valve ndilochepa, lomwe limakhala losavuta kupindika ndipo moyo wonyamula ndi waufupi.Njira yabwino yothetsera vutoli ndikugwiritsa ntchito tsinde la valavu yozungulira, ndiko kuti, valve yowongolera mtundu wa angle stroke.Tsinde lake ndi lalitali nthawi 2-3 kuposa tsinde la valve yowongoka, ndipo graphite yonyamula ndi moyo wautali wautumiki imasankhidwa.Kuuma kwa ndodo ya valve ndikwabwino, moyo wolongedza ndi wautali, ndipo torque yake yolimbana ndi yaying'ono ndipo kusiyana kobwererako kumakhala kochepa.

5. Chifukwa chiyani kusiyana kwamphamvu kwa ma valve ocheperako kumakulirakulira?
Kusiyanitsa kwakukulu kwapang'onopang'ono kwa valve stroke ndi chifukwa mphamvu yomwe imapangidwa ndi sing'anga pakatikati pa valve kapena mbale ya valve imapanga torque yaying'ono pamtengo wozungulira, kotero imatha kupirira kusiyana kwakukulu.

6. Chifukwa chiyani moyo wautumiki wa valavu ya gulugufe wokhala ndi mizere ya rabara ndi valavu ya diaphragm ya fluorine yomwe imagwiritsidwa ntchito m'madzi a mchere imakhala yaufupi?
Pali asidi otsika kapena alkali m'madzi osungunuka, omwe amawononga mphira.Kuchita kwa dzimbiri kwa mphira pakukulitsa, kukalamba, kutsika kwamphamvu, ndi valavu yagulugufe yokhala ndi mphira, kugwiritsa ntchito ma valve a diaphragm ndikosavuta, makamaka ndikukana dzimbiri la rabara.Valavu yakumbuyo yokhala ndi mphira ya diaphragm idasinthidwa kukhala valavu ya diaphragm yokhala ndi fluorine yokhala ndi kukana kwa dzimbiri.Komabe, nembanemba ya valavu ya fluorine yokhala ndi diaphragm sinathe kupirira kupindika mmwamba ndi pansi, kuwononga makina ndikufupikitsa moyo wautumiki wa valavu.Tsopano njira yabwino ndiyo kugwiritsa ntchito valavu yapadera ya mpira pochiza madzi, yomwe ingagwiritsidwe ntchito kwa zaka 5-8.

7. Chifukwa chiyani valve yotseka iyenera kusindikizidwa mwamphamvu?
Kutsika kutsika kwa valve yotseka, ndibwino.Kutuluka kwa valve yosindikizira yofewa ndikotsika kwambiri.Zoonadi, zotsatira zodula ndi zabwino, koma sizimamva kuvala ndipo zimakhala zodalirika.Malingana ndi miyeso iwiri ya kutayikira kwakung'ono ndi kusindikiza kodalirika, kusindikiza kofewa kuli bwino kusiyana ndi kusindikiza kolimba.Monga valavu yogwiritsira ntchito ultra light control valve, yosindikizidwa ndi yodzaza ndi chitetezo cha alloy chosavala, kudalirika kwakukulu, kuthamanga kwa 10-7, yatha kukwaniritsa zofunikira za valve yotseka.

8. Chifukwa chiyani valavu ya manja sinalowe m'malo amodzi ndi valavu yokhala ndi mipando iwiri?
Ma valve a manja, omwe adatuluka m'ma 1960, ankagwiritsidwa ntchito kwambiri kunyumba ndi kunja kwa 1970s.M'mafakitale a petrochemical omwe adayambitsidwa m'zaka za m'ma 1980, mavavu am'manja adapanga gawo lalikulu.Panthawiyo, anthu ambiri amakhulupirira kuti mavavu amatha kusintha ma valve okhala ndi mipando imodzi ndi iwiri ndikukhala mankhwala a m'badwo wachiwiri.Mpaka pano, sizili choncho.Vavu yapampando umodzi, valavu yokhala ndi mipando iwiri ndi valavu ya manja onse amagwiritsidwa ntchito mofanana.Izi zili choncho chifukwa valavu ya manja imangowonjezera mawonekedwe ogwedeza, kukhazikika ndi kukonza, koma kulemera kwake, zizindikiro zoletsa kutsekereza ndi zowonongeka zimagwirizana ndi za valavu ya mpando umodzi ndi valavu yapawiri.Ingalowetse bwanji valavu yapampando umodzi ndi valavu yokhala ndi mipando iwiri?Choncho, angagwiritsidwe ntchito pamodzi.

9. N’cifukwa ciani kusankha n’kofunika kwambili kuposa kuŵelenga?
Poyerekeza ndi mawerengedwe, kusankha mtundu n'kofunika kwambiri ndi zovuta.Chifukwa kuwerengera ndi njira yosavuta yowerengera, sizitengera kulondola kwa chilinganizo chokha, koma kulondola kwa magawo omwe apatsidwa.Pali zambiri zomwe zikukhudzidwa pakusankhidwa kwachitsanzo.Ngati sichisamala, chidzatsogolera ku chisankho chosayenera, chomwe sichidzangowononga anthu, chuma ndi chuma, komanso kumayambitsa mavuto ena omwe amagwiritsidwa ntchito, monga kudalirika, moyo wautumiki ndi khalidwe la ntchito.