Uvavanyo lokuvuza koxinzelelo lwevalve kunye nendlela yokusebenza yevalvu yendawo yenqanaba lokwabelana

Uvavanyo lokuvuza koxinzelelo lwevalve kunye nendlela yokusebenza yevalvu yendawo yenqanaba lokwabelana

Xa umbhobho usetyenziswa okokuqala, kukho ukungcola kwangaphakathi, iivalve inokuvulwa kancinane, isantya esiphezulu sokuhamba kwesiphakathi singasetyenziselwa ukuyihlamba, kwaye emva koko ivalwe ngobunono (ayivalwanga ngokukhawuleza, ivaliwe ngokukrakra, ukuthintela ukungcola okushiyekileyo ekubambeni indawo yokutywina), ivule kwakhona, iphindaphinda abaninzi. amaxesha, uhlambe ukungcola, uze ubeke kumsebenzi wesiqhelo. Ngokuqhelekileyo uvule i-valve, kunokubakho ukungcola kwindawo yokutywina. Xa uvala, le ndlela ingentla kufuneka isetyenziswe kwakhona ukuyihlamba icocekile, kwaye emva koko ivale ngokusemthethweni. Ukuba i-handwheel kunye nesibambo zonakalisiwe okanye zilahlekile, kufuneka zigqitywe ngokukhawuleza, kwaye azikwazi ukutshintshwa zizandla zepleyiti ezihambayo, ukuze zingonakalisi i-quartet ye-stem, ukuvulwa kunye nokuvala akusebenzi, kubangele iingozi kwimveliso.
Indlela yokusebenza yevalve
Kwiivalve, akufuneki kuphela ukuba ikwazi ukufaka kunye nokugcina, kodwa nokusebenza.
(a) ukuvula nokuvalwa kwevalvu ngesandla
Ivalve ye-Manual yeyona valve isetyenziswa kakhulu, ivili layo lesandla okanye isiphatho, siyilwe ngokuhambelana nabasebenzi abaqhelekileyo, kuthathelwa ingqalelo amandla omphezulu wokutywina kunye namandla okuvala ayimfuneko. Ngoko awukwazi ukusebenzisa i-lever ende okanye i-spinner ende. Abanye abantu baqhele ukusebenzisa isikrufu, kufuneka banikele ingqalelo engqongqo, hayi amandla kakhulu, kungenjalo kulula ukonakalisa umphezulu wokutywina, okanye ivili lesandla elaphukileyo, umqheba.
Vula kwaye uvale i-valve, amandla kufuneka alula, angabi nempembelelo. Ezinye iimpembelelo zokuvula kunye nokuvalwa kweengxenye zevalve yoxinzelelo oluphezulu zithathele ingqalelo amandla empembelelo kunye nevalve jikelele ayinakulinda. Kwi-valve ye-steam, ngaphambi kokuvula, kufuneka ifudunyezwe kwangaphambili kwaye amanzi adibeneyo kufuneka angabandakanywa. Xa uvula, kufuneka kube ngokucotha kangangoko kunokwenzeka ukuphepha isenzeko sogwayimbo lwamanzi.
Xa i-valve ivulekile ngokupheleleyo, i-handwheel kufuneka iguqulwe kancinane, ukwenzela ukuba intambo phakathi kwe-tight, ukuze ingakhululeki umonakalo. Kwiivalvu ze-pole-stem, khumbula ukuma kwesiqu xa sivuleke ngokupheleleyo kwaye sivalwe ngokupheleleyo, ukunqanda ukubetha indawo efileyo ephezulu xa ivuleke ngokupheleleyo. Kwaye kulungele ukujonga ukuba iyinto eqhelekileyo xa ivalwe ngokupheleleyo. Ukuba ivalve iyawa, okanye phakathi kwesitywina sespool kufakwe inkunkuma enkulu, indawo yesiqu iya kutshintsha xa ivalwe ngokupheleleyo.
Xa umbhobho usetyenziswa okokuqala, kukho ukungcola okungaphezulu kwangaphakathi, ivalve inokuvulwa kancinci, isantya esiphezulu sokuhamba kwesixhobo singasetyenziselwa ukuyihlamba, kwaye emva koko ivalwe ngobunono (ayivalwanga ngokukhawuleza, ivalwe ngokukrakra, ukunqanda. ukungcola okushiyekileyo ekubambeni umphezulu wokutywina), vula kwakhona, phinda-phinda amaxesha amaninzi, hlamba ukungcola, emva koko ubeke kumsebenzi wesiqhelo. Ngokuqhelekileyo uvule i-valve, kunokubakho ukungcola kwindawo yokutywina. Xa uvala, le ndlela ingentla kufuneka isetyenziswe kwakhona ukuyihlamba icocekile, kwaye emva koko ivale ngokusemthethweni. Ukuba i-handwheel kunye nesibambo zonakalisiwe okanye zilahlekile, kufuneka zigqitywe ngokukhawuleza, kwaye azikwazi ukutshintshwa zizandla zepleyiti ezihambayo, ukuze zingonakalisi i-quartet ye-stem, ukuvulwa kunye nokuvala akusebenzi, kubangele iingozi kwimveliso.
Okunye okuphakathi, ukupholisa emva kokuba ivalve ivaliwe, ukwenzela ukuba iindawo zevalve ziyancipha, umqhubi kufuneka aphinde avaliwe ngexesha elifanelekileyo, ukwenzela ukuba indawo yokutywina ingashiyi i-seam ecocekileyo, ngaphandle koko, i-medium ukusuka kwi-fine seam high- ukuhamba kwesantya, kulula ukuhlamba indawo yokutywina. Ngethuba lokusebenza, ukuba kufunyenwe ukuba umsebenzi unzima kakhulu, isizathu kufuneka sihlalutye. Ukuba ukupakisha kuqinile kakhulu, kunokukhululeka ngokufanelekileyo, njenge-valve stem skew, kufuneka ixelele abasebenzi ukuba balungise. Ezinye iivalve, kwimeko evaliweyo, iindawo ezivaliweyo zifudumala ukwandiswa, okubangela ubunzima bokuvula; Ukuba kufuneka ivulwe ngeli xesha, isigqubuthelo sinokukhutshwa kwisiqingatha sesangqa ukuya kwisangqa ukuphelisa uxinzelelo lwesiqu, kwaye ke ipleyiti ukuqalisa ivili.
(2) Imibandela efuna ingqalelo
I-1, 200 ℃ ngaphezu kwevalve yobushushu obuphezulu, ngenxa yofakelo kwiqondo lobushushu begumbi, kwaye emva kokusetyenziswa okuqhelekileyo, ukunyuka kobushushu, ukwanda kobushushu bebholiti, ukwanda kwesithuba, ngoko ke kufuneka kuqiniswe kwakhona, okubizwa ngokuba yi "hot tight", abaqhubi kufuneka bathathele ingqalelo oku. umsebenzi, kungenjalo uthambekele ekuvuzeni.
2. Xa imozulu ibanda, i-valve yamanzi kufuneka ivalwe ixesha elide, kwaye amanzi kufuneka asuswe emva kwevalve. Ivalve yomphunga emva komphunga, nayo ifuna ukungabandakanyi i-condensate. Umzantsi wevalve unesilika kwaye unokuvulwa ukuze ukhuphe amanzi.
I-3, i-valve e-non-metallic, i-valve eqinile kunye ne-brittle, amandla athile aphantsi, ukusebenza, amandla avulekileyo kunye avaliweyo angeke abe mkhulu kakhulu, ngakumbi akakwazi ukwenza amandla anamandla. Kananjalo qaphela ukuba ungankqonkqozi izinto.
I-4, xa i-valve entsha isetyenzisiweyo, ukupakishwa akufanele kugxininiswe kakhulu, ukwenzela ukuba kungavuzi, ukuze unganyanzelisi i-stem kakhulu, ukukhawuleza ukugqoka, kwaye kunzima ukuvula nokuvala.
Uvavanyo lokuvuza koxinzelelo lwevalve
Uvavanyo loxinzelelo lubhekisa kuvavanyo lwamandla omzimba. Uvavanyo lokuvuza, lubhekisa kuvavanyo lokuqina komphezulu wokutywina, ezi mvavanyo zimbini kukujonga ukusebenza kwevalvu ephambili. Indawo yokuvavanya idla ngokuba ngamanzi obushushu obuqhelekileyo, kwaye i-kerosene ingasetyenziselwa iivalvu ezibalulekileyo. Uvavanyo loxinzelelo lwevalve yokhuseleko, inokusebenzisa igesi yenitrogen ezinzileyo, inokusebenzisa umphunga okanye umoya endaweni yoko. Kwiivalvu ze-diaphragm, vavanya ngomoya.
(1) uvavanyo loxinzelelo
Uxinzelelo lovavanyo lwamandla e-valve, kwaye uxinzelelo lwegama lunobudlelwane obulandelayo
Uxinzelelo lwegama (Mpa) uxinzelelo lovavanyo lwamandla (Mpa0.10.20.250.40.40.60.60.911.51.62.42.53.8466.49.610151624203025383248 ngokubonakalayo, uxinzelelo oluqhelekileyo oluvela kwi-0.24 Mpa yoxinzelelo oluqhelekileyo olusetyenziswayo, i-valve yovavanyo oluqhelekileyo lwe-3 Mpa. amaxesha ovavanyo lwetywina lweValve, elilingana noxinzelelo lwegama.
(2) Iindlela zokuvavanya
Uvavanyo loxinzelelo kunye novavanyo lokuvuza lwenziwa kwibhentshi yovavanyo. Ubume bebhentshi yokuvavanya (njengoko kuboniswe kuMzobo 5-1) kukuba kukho inxalenye ecinezelayo ngaphezu kwebhentshi yokuvavanya kunye nombhobho odibeneyo kunye nempompo yokuvavanya uxinzelelo olungezantsi. Emva kokuba i-valve icinezelwe, ipompo yokuvavanya uxinzelelo isebenza. Ukusuka kwi-gauge yoxinzelelo lwempompo yokuvavanya uxinzelelo, i-valve inokufundwa ngaphandle kwenani loxinzelelo. Xa ivalve yovavanyo loxinzelelo igcwalisa amanzi, umoya okwivalve kufuneka ukhutshwe. Iplate yoxinzelelo kwindawo ephezulu yebhentshi yokuvavanya inomngxuma wokukhupha kwaye ivuliwe kwaye ivalwe nge-valve encinci. Umqondiso wokuba umoya ususiwe kukuba onke amanzi aphuma kwi-vent. Emva kokuvala i-vent, qalisa ukunyusa uxinzelelo. Inkqubo yokunyusa kufuneka icothe, ingabi bukhali. Emva kokufikelela kuxinzelelo oluchaziweyo, gcina imizuzu emi-3, uxinzelelo alufaneleki.
Inkqubo yovavanyo lokuvuza koxinzelelo loxinzelelo inokwahlulwa ibe ngamanyathelo amathathu:
I-1, vula indlela yevalve, gcwalisa i-valve cavity ngamanzi (okanye i-kerosene), kwaye ukhulise uxinzelelo kwiimfuno zovavanyo lwamandla, khangela umzimba wevalve, i-valve cover, i-gasket, ukupakisha ukuvuza.
2, vala indlela yevalve, uxinzelelo kwelinye icala levalve ukuya kuxinzelelo oluncinci, khangela ukuba kukho ukuvuza kwelinye icala.
3. Jika ivalve ijongise ezantsi kwaye uvavanye icala elichaseneyo.
Isiseko semveliso yevalvu yengingqi yesabelo somgangatho wevalufa ngaphezulu kwento?
Abahlobo abaninzi baye badidekile kunokuba abazi ukuba yintoni abavelisi ukufumana iivalvu, yintoni uphawu, apho umgangatho ungcono, abanye abantu bathi Shanghai, abanye abantu bathi Zhejiang, abanye abantu bathi Jiangsu, xiaobian kule moto ihloniphekile.
Iivalvu zahlukene kwaye kukho uhlobo lwevalvu oludumileyo ngokwezibalo lungaphezulu kwamawaka asibhozo, kwaye enye 5 ayinamanani, inobuninzi obuyilelwe ishishini, inobuninzi obulungiselelwe iprojekthi ethile, hayi * * * esetyenziswa imarike, kodwa inxalenye encinci iyapheliswa, isoloko isithi kakhulu, yingxubakaxaka, ngokuthe ngqo kwinqanaba lokuba, Lo mxholo ulandelayo yikona nje yokukhanya, izibalo zeenwele zenkomo, utyelelo oluneenkcukacha okanye intsimi, sebenzisa okulungileyo. (ukuhlelwa okuneenkcukacha ngakumbi kweempawu kunye neempawu zengingqi nceda unikele ingqalelo kwinqaku elilandelayo). Ngezantsi siza kuhlalutya abavelisi abakhulu malunga nokuhlelwa kwevalve kunye nesabelo semarike yenkcazo, idatha isekelwe kwizibalo ze-National Bureau of Statistics (abavelisi abaneelayisensi zokuvelisa, inani leentengiso kunye neziphumo zezibalo zerhafu yonyaka).
Umgangatho wesabelo semarike yevalufa:
Zhejiang: 53%
1. Idolophu yaseOubei, kwiNqila yaseYongjia, eWenzhou: ngama-23% (iivalvu eziqhelekileyo, iivalvu zentsimbi, iivalvu eziqhelekileyo zaseMelika, njl.njl.)
I-2, iSithili saseWenzhou Longwan: i-15% (i-valve ephantsi, i-stainless steel valves, njl.)
I-Yuhuan County: i-6% (iivalvu zobhedu, njl.)
I-Ningbo: 2.5% (iivalvu zeplastiki, iivalvu zobhedu, njl.njl.)
I-Lishui: i-2% (i-valve yentsimbi, i-American standard valves, njl.)
I-Hangzhou: 1.5% (ivalve elawulayo, njl.)
I-Yueqing: 0.5% (Iivalvu zaselwandle, njl.)
Isixeko saseZhuji: 0.5% (iivalvu zethusi, izixhobo zomlilo, njl.)
I-Yuyao: 0.5% (ivalve ye-solenoid)
Eseleyo yi-1% (eRuian, eTongxiang, eTaizhou)
IsiXeko saseYancheng, kwiPhondo laseJiangsu: 12.5% ​​(ivalve yelinge elidibeneyo, ivalve yesixhobo, ivalve yehydraulic, ivalve ephezulu, njl.njl.)
I-Shanghai: i-7% (iivalvu ezivela kumazwe angaphandle, ** iivalvu, iivalvu zesikhululo samandla, iivalvu ezizenzekelayo, njl.)
I-Tianjin: 5% (ivalve yoxinzelelo oluphantsi, ivalve yebhabhathane ethambileyo, njl.njl.)
IPhondo laseGuangdong: 4% (iivalvu zelinge elidibeneyo, njl.njl.)
IPhondo laseFujian: i-2.5% (iivalvu zentsimbi, iivalvu zomlilo, iivalvu zamanzi, njl.njl.)
IsiXeko saseHenan: 2% (iivalvu zoxinzelelo oluphantsi, intsimbi etyhidiweyo, iivalvu zentsimbi, njl.njl.)
EBeijing: 2% (iivalvu zoxinzelelo oluphezulu, njl.njl.)
IZigong, kwiphondo laseSichuan: 1% (iivalvu zoxinzelelo oluphezulu, iivalvu zesikhululo samandla, njl.njl.)
IPhondo laseShandong: 1% (iivalvu zegroove, izivalo zomlilo, njl.njl.)
Iphondo laseHebei: 1% (intsimbi etyhidiweyo, iivalvu zentsimbi, njl.njl.)
Umasipala waseChongqing: 0.5% (ivalve ye-solenoid, njl.njl.)
Okunye: 9%
Ezi nkcukacha-manani zingentla zahlulwe ngokwenani lamashishini, iintengiso, kunye nobuninzi bemveliso. Ukuba kukho ukutenxa, nceda ujonge eyona meko.