1. Isingeniso kumavalvu esango

1.1. Umgomo wokusebenza kanye nomsebenzi wama-valve wesango:

Amavalvu esango ayingxenye yamavalvu anqanyuliwe, ngokuvamile efakwe emapayipini anobubanzi obukhulu kuno-100mm, ukuze anqume noma axhume ukugeleza kwemidiya epayipini. Ngenxa yokuthi i-valve disc isohlobo lwesango, ngokuvamile ibizwa ngokuthi i-valve yesango. Ama-valve esango anezinzuzo zokushintshwa kokulondoloza abasebenzi kanye nokumelana nokugeleza okuphansi. Kodwa-ke, indawo yokuvala ijwayele ukuguga futhi ivuze, i-stroke yokuvula inkulu, futhi ukugcinwa kunzima. Amavalvu esango angeke asetshenziswe njengamavalvu alawulayo futhi kufanele abe sendaweni evuleke ngokugcwele noma evalwe ngokugcwele. Isimiso sokusebenza siwukuthi: lapho i-valve yesango ivaliwe, isiqu se-valve siya phansi futhi sincike endaweni yokuvala i-valve yesango kanye nendawo yokuvala isihlalo se-valve ukuze ibe bushelelezi kakhulu, isicaba futhi ingaguquki, ivumelane ukuze kuvinjelwe ukugeleza kwemidiya, futhi uthembele ku-wedge ephezulu ukuze ukhulise umphumela wokuvala. Ucezu lwawo oluvalayo luhamba luqonde emugqeni ophakathi nendawo. Kunezinhlobo eziningi zama-valve esango, ezingahlukaniswa zibe uhlobo lwe-wedge kanye nohlobo oluhambisanayo ngokusho kohlobo. Uhlobo ngalunye luhlukaniswe ngesango elilodwa kanye nesango eliphindwe kabili.

1.2 Isakhiwo:

Umzimba we-valve yesango uthola ifomu lokuzivala. Indlela yokuxhuma phakathi kwesembozo se-valve kanye nomzimba we-valve ukusebenzisa ingcindezi ekhuphukayo ye-medium ku-valve ukucindezela ukupakisha kokuvala ukuze kuzuzwe inhloso yokuvala. Ukupakishwa kokuvalwa kwevalvu yesango kuvalwe nge-asbestos enengcindezi ephezulu epakishwa ngocingo lwethusi.

Isakhiwo se-valve yesango sakhiwe ikakhulukaziumzimba we-valve, isembozo se-valve, ifreyimu, isiqu se-valve, ama-disc valve kwesokunxele nakwesokudla, idivayisi yokupakisha yokuvala, njll.

Impahla yomzimba ye-valve ihlukaniswe yaba yi-carbon steel ne-alloy steel ngokusho kwengcindezi kanye nezinga lokushisa le- medium pipeline. Imvamisa, umzimba we-valve wenziwe ngezinto ezifakwa ingxubevange yamavalvu afakwe ezinhlelweni zesitimu esishisa kakhulu, esingu-t＞450℃ noma ngaphezulu, njengama-valve okukhipha amanzi kubhayela. Kumavalvu afakwe ezinhlelweni zokuphakelwa kwamanzi noma amapayipi anezinga lokushisa eliphakathi nendawo elingu-t≤450℃, impahla yomzimba yevalvu ingaba yinsimbi ye-carbon.

Amavalvu esango ngokuvamile afakwa kumapayipi amanzi esitimu ane-DN≥100 mm. Amadayamitha okuzisholo wamavalvu wesango kubhayela we-WGZ1045/17.5-1 ku-Zhangshan Phase I yi-DN300, DNl25 kanye ne-DNl00.

2. Inqubo yokulungisa i-valve yesango

2.1 Ukuhlukaniswa kwe-valve:

2.1.1 Khipha amabhawodi okulungisa ohlaka olungaphezulu lwekhava yevalvu, khulula amantongomane amabhawodi amane esembozweni sevalvu ephakamisayo, vula i-valve stem nut ngokuphambene newashi ukuze uhlukanise ifremu yevalvu emzimbeni, bese usebenzisa ukuphakamisa. ithuluzi lokuphakamisa uhlaka phansi bese ulubeka endaweni efanele. I-valve stem nut kufanele ihlakazwe futhi ihlolwe.

2.1.2 Khipha iringi ebambayo emzimbeni wevalvu ovala iringi enezinhlangothi ezine, cindezela ikhava yevalvu phansi ngethuluzi elikhethekile ukuze udale igebe phakathi kwekhava yevalvu neringi enezinhlangothi ezine. Bese ukhipha indandatho enezinhlangothi ezine ngezigaba. Okokugcina, sebenzisa ithuluzi lokuphakamisa ukuphakamisa isembozo se-valve kanye nesiqu se-valve kanye ne-valve disc ngaphandle komzimba we-valve. Yibeke endaweni yokulungisa, futhi unake ukuvimbela ukulimala endaweni ehlangene ye-valve disc.

2.1.3 Hlanza ingaphakathi lomzimba wevalvu, hlola isimo sendawo ehlangene yesihlalo sevalvu, bese unquma indlela yokuyinakekela. Vala i-valve ehlakaziwe ngesembozo esikhethekile noma ikhava, bese unamathisele uphawu.

2.1.4 Thuthukisa amahinge amabhawodi ebhokisi lokugxusha kukhava yevalvu. Indlala yokupakisha ikhululekile, futhi isiqu se-valve sijikijelwa phansi.

2.1.5 Khipha ama-clamp angaphezulu naphansi e-valve disc frame, uwaqaqe, khipha ama-valve discs kwesokunxele nakwesokudla, bese ugcine i-universal top yangaphakathi nama-gaskets. Linganisa ubukhulu be-gasket bese wenza irekhodi.

2.2 Ukulungiswa kwezingxenye zevalvu:

2.2.1 Indawo ehlangene yesihlalo se-valve yesango kufanele igaywe ngethuluzi elikhethekile lokugaya (isibhamu sokugaya, njll.). Ukugaya kungenziwa ngesihlabathi sokugaya noma indwangu ye-emery. Indlela nayo isuka kokumahhadlahhadla iye kwehle, futhi ekugcineni iyapholisha.

2.2.2 Indawo ehlangene yediski ye-valve ingagaywa ngesandla noma ngomshini wokugaya. Uma kunemigodi ejulile noma ama-grooves ebusweni, ingathunyelwa ku-lathe noma i-grinder ukuze icutshungulwe kancane, futhi ipholishwe ngemva kokuba konke kuhlelwe.

2.2.3 Hlanza ikhava ye-valve kanye nokupakisha kokuvala, susa ukugqwala odongeni lwangaphakathi nangaphandle lwendandatho yokupakisha yokucindezela, ukuze indandatho yokucindezela ifakwe kahle engxenyeni engenhla yesembozo se-valve, esilungele ukucindezela i-valve. ukupakisha ukupakisha.

2.2.4 Hlanza ukupakisha ebhokisini lokugxusha lesiqu se-valve, hlola ukuthi iringi yesihlalo sokupakisha yangaphakathi ilungile yini, ukuvuleka phakathi kwembobo engaphakathi nesiqu kufanele kuhlangabezane nezidingo, futhi iringi yangaphandle nodonga lwangaphakathi lwebhokisi lokugxusha kufanele. ungabambeki.

2.2.5 Hlanza ukugqwala endlaleni yokupakisha kanye nepuleti lokucindezela, futhi indawo engaphezulu kufanele ihlanzeke futhi iphelele. Ukuvunyelwa phakathi kwembobo yangaphakathi yegland kanye nesiqu kufanele kuhlangabezane nezidingo, futhi udonga lwangaphandle kanye nebhokisi lokugxusha akufanele liboshwe, ngaphandle kwalokho kufanele lilungiswe.

2.2.6 Khulula ibhawudi lehinge, hlola ukuthi ingxenye efakwe imiluko kufanele iphelele futhi nenathi seliphelele. Ungakwazi ukuyiphendulela kancane empandeni yebhawodi ngesandla, futhi iphinikhodi kufanele ijikeleze ngokuguquguqukayo.

2.2.7 Hlanza ukugqwala ebusweni besiqu se-valve, hlola ukugoba, futhi uyiqondise uma kunesidingo. Ingxenye yentambo ye-trapezoidal kufanele iphelele, ngaphandle kwezintambo eziphukile kanye nokulimala, futhi usebenzise impushana eholayo ngemva kokuhlanza.

2.2.8 Hlanza iringi ene-in-one, futhi ingaphezulu kufanele libe bushelelezi. Akufanele kube nama-burrs noma ama-curling endizeni.

2.2.9 Ibhawodi ngalinye lokubopha kufanele lihlanzwe, inati kufanele liphelele futhi liguquguquke, futhi ingxenye enentambo kufanele igcotshwe ngempushana yomthofu.

2.2.10 Hlanza i-stem nut kanye ne-internal bearing:

① Susa izikulufu zokulungisa zenathi lokukhiya lesiqu kanye nendlu, bese uqaqa isikulufu sonqenqema lokukhiya ngokuphambene newashi.

② Khipha i-stem nut, i-bearing, ne-disc spring, futhi uzihlanze ngophalafini. Hlola ukuthi ingabe i-bearing ijikeleza ngendlela eguquguqukayo kanye nokuthi isiphethu sediski sinokuqhekeka yini.

③ Hlanza i-stem nut, hlola ukuthi intambo yesitebhisi yangaphakathi ilungile yini, futhi izikulufi zokulungisa ezinezindlu kufanele ziqine futhi zithembeke. Ukugqoka kwe-bushing kufanele kuhlangabezane nezidingo, ngaphandle kwalokho kufanele kushintshwe.

④ Gcoba ibhotela ku-bearing futhi ulifake ku-stem nut. Hlanganisa i-disc spring njengoba kudingekile futhi uyifake kabusha ngokulandelana. Ekugcineni, ikhiye ngenati lokukhiya futhi uyilungise ngokuqinile ngezikulufo.

2.3 Ukuhlanganiswa kwevalvu yesango:

2.3.1 Faka amadiski evalvu yesokunxele nesokudla agaywe eringini yesiqu se-valve bese uwalungisa ngezinsimbi ezingenhla nezingezansi. I-universal top kanye ne-gaskets yokulungisa kufanele ifakwe ngaphakathi ngokuvumelana nesimo sokuhlola.

2.3.2 Faka isiqu se-valve nediski ye-valve esihlalweni sevalvu ukuze ihlolwe. Ngemuva kokuthi i-valve disc kanye nendawo yokuvala isihlalo se-valve kuxhumene ngokugcwele, indawo yokuvala i-valve disc kufanele ibe phezulu kunendawo yokuvala isihlalo se-valve futhi ihlangabezane nezidingo zekhwalithi. Uma kungenjalo, ubukhulu be-gasket phezulu kwendawo yonke kufanele bulungiswe kuze kube bufaneleka, futhi i-gasket yokumisa kufanele isetshenziselwe ukuyivala ukuze ingawi.

2.3.3 Hlanza umzimba wevalvu, sula isihlalo sevalvu kanye nediski yevalvu. Bese ufaka isiqu se-valve ne-valve disc esihlalweni bese ufaka isembozo se-valve.

2.3.4 Faka ukupakishwa kokuvala engxenyeni ezivala yona yekhava yevalvu njengoba kudingekile. Ukucaciswa kokupakisha kanye nenani lamaringi kufanele kuhlangabezane nezindinganiso zekhwalithi. Ingxenye engenhla yokupakisha icindezelwa ngendandatho yokucindezela futhi ekugcineni ivalwe nge-cover plate.

2.3.5 Phinda uhlanganise iringi emine ngezigaba, bese usebenzisa iringi yokuyibamba ukuze uyivimbele ukuthi ingawi, bese uqinisa inadi lebhawodi ephakamisa ikhava yevalvu.

2.3.6 Gcwalisa ibhokisi lokugxilisa isiqu se-valve ngokupakisha njengoba kudingekile, faka indlala yezinto ezibonakalayo kanye ne-pressure plate, bese uyiqinisa ngezikulufo zamahinge.

2.3.7 Hlanganisa kabusha uhlaka lwekhava yevalvu, zungezisa inadi ye-valve engenhla ukuze wenze ifremu iwele emzimbeni wevalvu, bese uyiqinisa ngamabhawudi axhumayo ukuze ingawi.

2.3.8 Hlanganisa kabusha i-valve yokushayela ugesi; isikulufu esiphezulu sengxenye yokuxhuma kufanele siqiniswe ukuze singawi, futhi sihlole mathupha ukuthi iswishi ye-valve iyaguquguquka yini.

2.3.9 I-nameplate yevalvu icacile, ilungile futhi ilungile. Amarekhodi esondlo aphelele futhi acacile; futhi bamukelwe futhi bafaneleka.

2.3.10 Amapayipi kanye nokufakwa kwama-valve sekuphelile, nendawo yokulungisa ihlanzekile.

3. Izindinganiso zekhwalithi yokugcinwa kwe-valve yesango

3.1 Umzimba we-valve:

3.1.1 I-valve umzimba kufanele ingabi nasici njengemigodi yesihlabathi, imifantu nokuguguleka, futhi kufanele isingathwe kusenesikhathi ngemuva kokutholakala.

3.1.2 Akufanele kube nemfucumfucu emzimbeni we-valve kanye nepayipi, futhi indawo yokungena nokuphuma akufanele kuvinjwe.

3.1.3 Ipulaki engezansi kwe-valve yomzimba kufanele iqinisekise ukuvala okuthembekile futhi akukho ukuvuza.

3.2 Isiqu se-valve:

3.2.1 Izinga lokugoba lesiqu se-valve akufanele libe likhulu kuno-1/1000 wobude obuphelele, ngaphandle kwalokho kufanele liqondiswe noma lishintshwe.

3.2.2 Ingxenye yentambo ye-trapezoidal yesiqu se-valve kufanele iphelele, ingabi nasici njengamabhande aphukile namabhande alumayo, futhi ukuguga akufanele kube kukhulu kuno-1/3 wogqinsi lwentambo ye-trapezoidal.

3.2.3 Indawo kufanele ibe bushelelezi futhi ingabi nokugqwala. Akufanele kube nokugqwala okuxegayo kanye nokuncibilika kwendawo engxenyeni ethintwayo enophawu lokupakisha. Iphoyinti lokugqwala elilinganayo elingu-≥0.25 mm kufanele lishintshwe. Isiphetho kufanele kuqinisekiswe ukuthi singaphezulu ▽6.

3.2.4 Intambo yokuxhuma kufanele ingaguquki futhi iphinikhodi kufanele lilungiswe ngendlela enokwethenjelwa.

3.2.5 Inhlanganisela yenduku yokugawula kanye namanethi enduku yokugawula kufanele iguquguquke, ngaphandle kokugxumela ngesikhathi sokushaywa okugcwele, futhi umucu kufanele umbozwe ngempushana yomthofu ukuze ugcobe futhi uvikeleke.

3.3 Ukupakisha uphawu:

3.3.1 Ingcindezi yokupakisha kanye nezinga lokushisa elisetshenzisiwe kufanele kuhlangabezane nezidingo ze-valve medium. Umkhiqizo kufanele uhambisane nesitifiketi sokuvumelana noma uhlolwe futhi uhlonzwe okudingekayo.

3.3.2 Imininingwane yokupakisha kufanele ihlangabezane nezidingo zosayizi webhokisi lokuvala. Amaphakethe amakhulu kakhulu noma amancane kakhulu akufanele asetshenziswe esikhundleni salokho. Ubude bokupakisha kufanele buhlangabezane nezidingo zosayizi we-valve, futhi umkhawulo wokuqina oshisayo kufanele ushiywe.

3.3.3 I-interface yokupakisha kufanele isikwe ibe yi-oblique shape ene-engeli engu-45 °. Ukuxhumana kwendingiliza ngayinye kufanele kunyakaziswe ngo-90°-180°. Ubude bokupakisha ngemva kokusika kufanele bufaneleke. Akufanele kube khona igebe noma ukugqagqana kusixhumi esibonakalayo uma sibekwe ebhokisini lokupakisha.

3.3.4 Iringi yesihlalo sokupakisha kanye nendlala yokupakisha kufanele ingagqwali futhi ingabi nokugqwala. Ibhokisi lokugxusha kufanele lihlanzeke futhi libushelelezi. Igebe phakathi kwenduku yesango kanye nendandatho yokuhlala kufanele ibe ngu-0.1-0.3 mm, futhi ingabi ngaphezu kuka-0.5 mm. Igebe phakathi kwe-gland yokupakisha, i-periphery yangaphandle yendandatho yesihlalo kanye nodonga lwangaphakathi lwebhokisi lokugxusha kufanele libe ngu-0.2-0.3 mm, nobukhulu obungekho ngaphezu kuka-0.5 mm.

3.3.5 Ngemva kokuba ama-hinge bolt eqinisiwe, ipuleti lokucindezela kufanele lihlale liyisicaba futhi amandla okuqinisa kufanele afane. Imbobo yangaphakathi yegland yokupakisha kanye nemvume ezungeze isiqu se-valve kufanele ihambisane. Indlala yokupakisha kufanele icindezelwe ekamelweni lokupakisha ibe yi-1/3 yobude bayo.

3.4 Indawo yokuvala:

3.4.1 Indawo evalekayo yediski ye-valve nesihlalo se-valve ngemva kokuhlolwa kufanele ingabi namachashazi nemigodi, futhi ingxenye yokuxhumana kufanele ibale ngaphezu kuka-2/3 wobubanzi bediski ye-valve, futhi ukuphela kwendawo kufanele kufinyelele ▽10 noma Okuningi.

3.4.2 Lapho uhlanganisa idiski yevalvu yokuhlola, umgogodla wevalvu kufanele ube ngo-5-7 mm ngaphezu kwesihlalo sevalvu ngemva kokuba idiski yevalvu ifakwe esihlalweni sevalvu ukuqinisekisa ukuvaleka okuqinile.

3.4.3 Lapho uhlanganisa amadiski e-valve yesokunxele nesokudla, ukuzilungisa kufanele kube nezimo eziguquguqukayo, futhi umshini wokulwa nokuwisa kufanele uqine futhi uthembeke. 3.5 I-Stem nut:

3.5.1 Intambo yangaphakathi ye-bushing kufanele iphelele, ngaphandle kwamabhakede aphukile noma angahleliwe, futhi ukulungiswa ngegobolondo kufanele kube okuthembekile futhi kungaxegi.

3.5.2 Zonke izingxenye ezithwalayo kufanele zilingane futhi zijikelezise ngokuguquguqukayo. Akufanele kube khona imifantu, ukugqwala, isikhumba esinzima kanye nezinye iziphambeko ebusweni bemikhono yangaphakathi nangaphandle kanye namabhola ensimbi.

3.5.3 I-disc spring kufanele ingabi nemifantu kanye nokuguqulwa, ngaphandle kwalokho kufanele ishintshwe. 3.5.4 Izikulufu zokulungisa phezu kwenathi lokukhiya akumele zixege. I-valve stem nut ijikeleza ngokuguquguqukayo futhi iqinisekisa ukuthi kukhona imvume ye-axial engekho ngaphezu kuka-0.35 mm.