1. Okujwayelekile
Lolu hlobo lwevalvu luklanyelwe ukuba lube ukufakwa okuvulekile-futhi kuvalwe ukuze kugcinwe ukusebenza okufanele okusetshenziswa ohlelweni lwamapayipi ezimbonini.
2. Incazelo Yomkhiqizo
2.1 Izidingo zobuchwepheshe
2.1.1 Izinga Lokuklama Nokukhiqiza:API 600, API 602
2.1.2 Connection Dimension Standard:ASME B16.5 njll
2.1.3 Ubuso Nobuso Dimension Standard:ASME B16.10
2.1.4 Ukuhlola Nokuhlola:API 598 njll
2.1.5 Usayizi: DN10 ~ 1200, Ukucindezela: 1.0 ~ 42MPa
2.2 Le valve ifakwe uxhumano lwe-flange, i-BW uxhumano lwe-BW oluqhutshwa ama-valve esango lokusakaza. Isiqu sinyakaza siqonde mpo. Idiski yesango ivala ipayipi ngesikhathi sokuzungeza isondo lesandla njengewashi. Idiski yesango ivula ipayipi ngesikhathi sokuzungeza isondo lesandla ngokuphambene newashi.
2.3 Sicela ubhekisele kusakhiwo somdwebo olandelayo
2.4 Izingxenye Eziyinhloko Nempahla
| NAME | IZINTO |
| Umzimba/Ibhonethi | I-WCB,LCB,WC6,WC9,CF3,CF3M CF8,CF8M |
| Isango | I-WCB,LCB,WC6,WC9,CF3,CF3M CF8,CF8M |
| Isihlalo | A105, LF2, F11, F22, F304 (304L), F316 (316L) |
| Isiqu | I-F304 (304L), F316 (316L), 2Cr13, 1Cr13 |
| Ukupakisha | I-graphite elukiweyo ne-Flexible graphite ne-PTFE njll |
| Ibholidi/Nati | 35/25, 35CrMoA/45 |
| I-Gasket | 304 (316)+Graphite /304(316)+Gasket |
| IsihlaloRing/Disc/Ukubekwa uphawu | 13Cr,18Cr-8Ni,18Cr-8Ni-Mo,PP,PTFE,STL njll. |
3. Isitoreji & Ukunakekela & Ukufakwa & Ukusebenza
3.1 Isitoreji Nokunakekela
3.1.1 Amavalvu kufanele agcinwe esesimweni sasendlini. Iziphetho zomgodi kufanele zimbozwe ngepulaki.
3.1.2 Ukuhlolwa ngezikhathi ezithile kanye nokucaciswa kuyadingeka kumavalvu agcinwe isikhathi eside, ikakhulukazi ukuhlanza indawo engaphezulu. Akukho monakalo ovunyelwe. Kucelwa ukugcotshwa uwoyela ukuze kugwenywe ukugqwala endaweni yomshini.
3.1.3 Maqondana nokugcinwa kwevalvu izinyanga ezingaphezu kweziyi-18, ukuhlolwa kuyadingeka ngaphambi kokufakwa kwamavalvu bese urekhoda umphumela.
3.1.4 Amavalvu kufanele ahlolwe futhi agcinwe kahle ngemva kokufakwa. Amaphuzu asemqoka anjengalawa angezansi:
1) Indawo yokuvala
2) Isiqu ne-Stem nut
3) Ukupakisha
4) Ukuhlanzwa kwangaphakathi kwendawo yoMzimba neBhonethi.
3.2 Ukufakwa
3.2.1 Hlola kabusha izimpawu zamavalvu (Uhlobo, i-DN, Isilinganiselwa, Izinto) ezithobelana nezimpawu ezicelwe wuhlelo lwamapayipi.
3.2.2 Kucelwa ukuhlanzwa ngokuphelele kwesikhala nendawo yokuvala ngaphambi kokufakwa kwevalvu.
3.2.3 Qinisekisa ukuthi amabhawodi aqinile ngaphambi kokufakwa.
3.2.4 Qinisekisa ukuthi ukupakisha kuqinile ngaphambi kokufaka. Nokho, akufanele iphazamise ukunyakaza kwe-stem.
3.2.5 Indawo yevalvu kufanele ilungele ukuhlolwa nokusebenza. Okuvundlile ukuya kwepayipi kuyakhethwa. Gcina isondo lesandla liye phezulu nesiqu sime mpo.
3.2.6 Ngevalvu yokuvala, ayifanele ukufakwa esimweni sokusebenza ngomfutho ophezulu. Isiqu kufanele sigwenywe ukuze sonakaliswe.
3.2.7 Ngevalvu yokushisela yesokhethi, kucelwa ukunakwa ngesikhathi sokuxhunywa kwevalvu kanje:
1) I-Welder kufanele iqinisekiswe.
2) Ipharamitha yenqubo yokushisela kufanele ihambisane nesitifiketi sekhwalithi yezinto zokushisela.
3）Impahla yokugcwalisa yomugqa wokushisela, ukusebenza kwamakhemikhali nokusebenza kwemishini kanye ne-anti-corrosion kufanele kufane nezinto zomzali womzimba.
3.2.8 Ukufakwa kwamavalvu kufanele kugweme ukucindezela okukhulu okuvela kokunamathiselwe noma amapayipi.
3.2.9 Ngemva kokufakwa, amavalvu kufanele avuleke ngesikhathi sokuhlolwa komfutho wepayipi.
3.2.10 Iphuzu Lokusekela:uma ipayipi liqine ngokwanele ukusekela isisindo se-valve kanye ne-torque yokusebenza, indawo yokusekela ayiceliwe. Ngaphandle kwalokho kuyadingeka.
3.2.11 Ukuphakamisa:Ukuphakamisa isondo lesandla akuvunyelwe kumavalvu.
3.3 Ukusebenza kanye nokusetshenziswa
3.3.1 Amavalvu esango kufanele avuleke noma avalwe ngokuphelele ngesikhathi esetshenziswa ukuze kugwenywe indandatho yokuvala isihlalo kanye nendawo yediski okubangelwa isivinini esikhulu. Abakwazi ukumangalelwa ngokulawulwa kokugeleza.
3.3.2 Isondo lesandla kufanele lisetshenziswe ukushintsha ezinye izinsimbi zokuvula noma ukuvala amavalvu
3.3.3 Phakathi nezinga lokushisa elivunyelwe lesevisi, ingcindezi esheshayo kufanele ibe phansi kunengcindezi elinganiselwe ngokuya nge-ASME B16.34
3.3.4 Akukho monakalo noma isiteleka esivunyelwe ngesikhathi sokuthutha, ukufakwa kanye nokusebenza.
3.3.5 Ithuluzi lokulinganisa lokuhlola ukugeleza okungazinzile liyacelwa ukuba lilawule futhi lisuse isici sokubola ukugwema ukulimala nokuvuza kwevalvu.
3.3.6 Ukuminyanisa okubandayo kuzoba nomthelela ekusebenzeni kwamavalvu, futhi amathuluzi okulinganisa kufanele asetshenziselwe ukunciphisa izinga lokushisa lokugeleza noma ukufaka esikhundleni sevalvu.
3.3.7 Ngoketshezi oluzishisa ngokwalo, sebenzisa amathuluzi okulinganisa afanelekile ukuze uqiniseke ukuthi indawo ezungezile nengcindezi yokusebenza ingeqi indawo yayo yokuzishisa (ikakhulukazi qaphela ukukhanya kwelanga noma umlilo wangaphandle).
3.3.8 Uma kuba noketshezi oluyingozi, njengeziqhumane, ezivuthayo, ezinobuthi, imikhiqizo ekhipha i-oxidation, akuvunyelwe ukufaka esikhundleni sokupakisha ngaphansi kwengcindezi. Noma kunjalo, esimweni esiphuthumayo, akunconywa ukufaka esikhundleni sokupakisha ngaphansi kwengcindezi (nakuba i-valve inomsebenzi onjalo).
3.3.9 Qinisekisa ukuthi uketshezi alungcolile, okuthinta ukusebenza kwamavalvu, kungabandakanyi izinto eziqinile, ngaphandle kwalokho amathuluzi okulinganisa afanelekile kufanele asetshenziselwe ukususa ukungcola nezinsimbi eziqinile, noma esikhundleni salo kufakwe olunye uhlobo lwevalvu.
3.3.10 Izinga lokushisa lokusebenza elisebenzayo
| Okubalulekile | Izinga lokushisa | Okubalulekile | Izinga lokushisa |
| WCB | -29℃425℃ | WC6 | -29℃538℃ |
| I-LCB | -46℃343℃ | WC9 | --29℃570℃ |
| I-CF3 (CF3M) | -196-454 ℃ | I-CF8 (CF8M) | -196-454 ℃ |
3.3.11 Qinisekisa ukuthi insimbi yomzimba wevalvu ifanelekile ukuthi ikwazi ukumelana nokugqwala nokuvikela indawo ewuketshezi.
3.3.12 Ngesikhathi sesevisi, hlola ukusebenza kokuvala njengokusho kwethebula elingezansi:
| Indawo yokuhlola | Ukuvuza |
| Ukuxhumana phakathi komzimba we-valve nebhonethi ye-valve | Uziro |
| Ukupakisha uphawu | Uziro |
| Isihlalo somzimba we-valve | Njengokucaciswa kobuchwepheshe |
3.3.13 Njalo hlola ukuguga kwemali yokuhlala, ukupakisha ukuguga nomonakalo.
3.3.14 Ngemva kokulungiswa, hlanganisa kabusha futhi ulungise ivalvu, bese uhlola ukusebenza kokuqina bese wenza amarekhodi.
4. Izinkinga ezingenzeka, izimbangela kanye nezinyathelo zokulungisa
| Incazelo yenkinga | Okungaba imbangela | Izinyathelo zokulungisa |
| Ukuvuza ekupakisheni | Ukupakisha okucindezelwe ngokwanele | Phinda uqinise nati lokupakisha |
| Inani elanele lokupakisha | Engeza ukupakisha okwengeziwe | |
| Ukupakisha okonakele ngenxa yesevisi yesikhathi eside noma ukuvikelwa okungalungile | Shintsha ukupakisha | |
| Ukuvuza ebusweni obuhlezi bevalvu | Ubuso bezihlalo obungcolile | Susa ukungcola |
| Ubuso obugugile obuhlezi | Yilungise noma shintsha iringi yesihlalo noma ipuleti levalvu | |
| Ubuso bezihlalo obonakele ngenxa yezinto eziqinile | Khipha okuqinile oketshezini, shintsha iringi yesihlalo noma ipuleti levalvu, noma ufake olunye uhlobo lwevalvu | |
| Ukuvuza ekuxhumekeni phakathi kwe-valve body nebhonethi yevalvu | Amabhawodi awaboshiwe kahle | Bopha amabhawodi ngendlela efanayo |
| Ubuso obuvalile bebhonethi obulimele bomzimba we-valve kanye ne-valve flange | Yilungise | |
| I-gasket eyonakele noma ephukile | Faka esikhundleni i-gasket | |
| Ukuzungezisa okunzima kwesondo lesandla noma ipuleti levalvu akukwazi ukuvulwa noma ukuvalwa. | Ukupakisha okuqiniswe kakhulu | Khulula ngokufanelekile nati lokupakisha |
| Ukuguqulwa noma ukugoba kwe-gland evala uphawu | Lungisa indlala yokuvala uphawu | |
| I-valve stem nut elimele | Lungisa intambo bese ususa okungcolile | |
| Intambo ye-valve stem nut egugile noma ephukile | Faka esikhundleni i-valve stem nut | |
| Isiqu se-valve egobile | Shintsha isiqu se-valve | |
| Indawo engcolile yomhlahlandlela wepuleti le-valve noma umzimba we-valve | Susa ukungcola endaweni yomhlahlandlela |
Qaphela: Umsebenzisi kufanele abe nolwazi olufanele kanye nesipiliyoni ngamavalvu Ivalvu yesango elivala amanzi
Ukupakishwa kwebhonethi kuyisakhiwo sokuvala amanzi, sizohlukaniswa nomoya kuyilapho umfutho wamanzi ufinyelela ku-0.6~1.0MP ukuze kuqinisekiswe ukusebenza kahle kokuvala komoya.
5.Isiqinisekiso:
Ngemuva kokuthi i-valve isetshenzisiwe, isikhathi sewaranti yevalvu yizinyanga eziyi-12, kodwa asidluli izinyanga eziyi-18 ngemuva kosuku lokulethwa. Ngesikhathi sewaranti, umenzi uzohlinzeka ngesevisi yokukhanda noma izingxenye ezisele mahhala ngomonakalo odalwe yimpahla, ubungcweti noma umonakalo inqobo nje uma lokho kusebenza kulungile.
Isikhathi sokuthumela: Nov-10-2020