Kodi Valavu Yotseka Mwadzidzidzi (ESDV) ndi Chiyani: Mfundo Yogwirira Ntchito

Kodi Valavu Yotseka Mwadzidzidzi (ESDV) ndi chiyani?

Mu dziko lomwe mafakitale ambiri amagwirira ntchito, makamaka mafakitale oyenga mafuta ndi gasi, mafakitale opanga mankhwala, ndi malo opangira magetsi, chitetezo sichinthu chofunikira kwambiri - ndi chofunikira kwambiri. Pachimake pa kuteteza antchito, kuteteza chilengedwe, komanso kupewa kuwonongeka kwa katundu, pali chida chofunikira kwambiri:Valavu Yotseka Mwadzidzidzi(ESDV), yomwe nthawi zambiri imatchedwa kutiValavu Yotseka (SDV)mkati mwa Machitidwe Ogwiritsira Ntchito Zida Zachitetezo (SIS).

ESDV ndivalavu yapadera, yoyendetsedwa yokhacholinga chimodzi chachikulu: kugawa mwachangu komanso modalirika magawo a kayendedwe ka ntchito (zamadzimadzi, mpweya, kapena madzimadzi ambiri) pakagwa vuto ladzidzidzi. Mosiyana ndi ma valve owongolera omwe amasintha kayendedwe ka ntchito, ma ESDV ndi ma binary operators - amatseguka kwathunthu (kulola kayendedwe ka ntchito nthawi yanthawi zonse) kapena kutsekedwa kwathunthu (kuletsa kayendedwe ka ntchito panthawi yadzidzidzi). Ntchito yawo yayikulu ndikuchita ngatichotchinga chachikulu chakuthupikuletsa kutulutsa zinthu zoopsa mosalamulirika pamene malire ofunikira achitetezo apitirira.

Chifukwa Chake Ma ESDV Sangathe Kukambidwanso Pa Chitetezo

Zotsatira za kulephera kupatula kayendedwe ka ntchito panthawi yadzidzidzi monga moto, kutuluka kwa madzi, kupanikizika kwambiri, kulephera kwa zida, kapena kutayika kwa zoletsa zitha kukhala zoopsa kwambiri. Ma ESDV ndi zigawo zofunika kwambiri za Ntchito Zogwiritsira Ntchito Zachitetezo (SIFs) mkati mwa Dongosolo Lonse Logwiritsira Ntchito Zachitetezo (SIS). Machitidwewa adapangidwa motsatira miyezo yapadziko lonse lapansi (IEC 61511 / ISA 84) ndipo adapatsidwa Ma Levels a Chitetezo (SIL) kutengera kuchepetsa zoopsa zomwe ayenera kukwaniritsa.

Makhalidwe Ofunika Kufotokozera ESDV:

1. Kapangidwe Kosalephera:Iyi ndiyo mfundo yaikulu. Ma ESDV apangidwa kuti azisuntha *zokha* kupita kumalo otetezeka (pafupifupi nthawi zonse)yatsekedwa kwathunthu, koma nthawi zina *amatsegulidwa* m'malo enaake monga madzi ozizira panthawi ya moto) magetsi akatayika (magetsi, mpweya, kuthamanga kwa madzi) kapena akalandira chizindikiro china chochokera ku SIS. Izi zimatsimikizira chitetezo ngakhale fakitale itataya mphamvu kapena ulamuliro.

2. Kudalirika Kwambiri & Kupezeka Kwake:Ma ESDV amapangidwa motsatira njira zovuta kwambiri, kupanga, kuyesa, ndi kupereka satifiketi. Ayenera kugwira ntchito nthawi iliyonse akafuna. Kuchuluka kwa zinthu zofunika kwambiri (monga ma solenoids) n'kofala.

3. Nthawi Yotseka Mwachangu:Liwiro ndi lofunika kwambiri pa nthawi yadzidzidzi. Ma ESDV amanenedwa kuti atseke mkati mwa nthawi yochepa kwambiri, nthawi zambiriSekondi imodzi mpaka zisanu, kutengera kukula kwa valavu, mtundu, ndi zofunikira zinazake zachitetezo (mlingo wa SIL).

4. Kusindikiza Kwabwino:Akatseka, ma ESDV ayenera kuperekachisindikizo cholimba ngati thovukuti mupewe kutuluka kulikonse kwa madzi owopsa a process process.

5. Kapangidwe Kolimba:Yopangidwa kuti izitha kupirira zovuta (kuthamanga kwambiri, kutentha, madzi owononga) komanso kuopsa kwa moto (kapangidwe koteteza moto malinga ndi API 607/6FA, ISO 10497 nthawi zambiri ndi kofunikira).

6. Kudzilamulira Kokha:Ma ESDV amalandira chizindikiro chawo cha ulendo mwachindunji kuchokera ku Safety Instrumented System (SIS), osati njira yowongolera njira yokhazikika (BPCS). Kulekanitsa kumeneku ndikofunikira kwambiri kuti zinthu ziyende bwino.

Kuwona Chitetezo: Kuyimira P&ID ya Valve Yotseka Mwadzidzidzi

Ma Piping ndi Zida Zogwiritsira Ntchito (P&ID) ndi chilankhulo chodziwika bwino cha mainjiniya opanga zinthu. Ma ESDV ali ndi zizindikiro zosiyana kuti azisiyanitse ndi mitundu ina ya ma valve ndipo amasonyeza bwino ntchito yawo yofunika kwambiri pachitetezo.

* Chizindikiro cha Valavu Yokhazikika:Chizindikiro chachikulu chimadalira mtundu wa valavu:

* Valavu ya Mpira:Makona atatu awiri akuloza ku bwalo (lomwe likuyimira mpira).

* Valavu ya Chipata:Chingwe chozungulira chotsetsereka pakati pa mizere iwiri yoyima (yoyimira chipata ndi thupi).

* Valavu ya Gulugufe:Mzere wowongoka wozungulira mozungulira (woyimira diski ndi thupi).

* Chizindikiro cha Actuator:Chizindikiro chachikulu cha ESDV/SDV ndi chizindikiro chake cha actuator chomwe chimalumikizidwa ku thupi la valavu:

* AsikweyaChozungulira chizindikiro cha valavu nthawi zambiri chimayimira chowongolera.

* Pa ESDV, sikweya iyi nthawi zambiri imakhalawodzazidwa ndi wakuda wolimbakapenayosweka.

* Makalatawo"ESD", "SD"kapena"XV"(kumene X imatanthauza chizindikiro china chake, nthawi zambiri 'S' cha kutseka) zimawonetsedwa bwino pafupi ndi kapena mkati mwa chizindikiro cha actuator.

* Kulephera Kuchitapo Kanthu:Kulephera kwa chitetezo kumawonetsedwa ndi zizindikiro pafupi ndi actuator:

* FC (Yalephera Kutseka):Muvi woloza ku thupi la valavu kapena zilembo "FC". Chofala kwambiri pa ma ESDV.

* FO (Yosatsegulidwa):Muvi woloza kutali ndi thupi la valavu kapena zilembo "FO". Umagwiritsidwa ntchito m'zochitika zinazake.

* Chida Chopangira ndi Nambala ya Chizindikiro:ESDV nthawi zonse imalumikizidwa ndi SIS. Ntchito yake imawonetsedwa ndithovu la zida(nthawi zambiri chimakhala ngati hexagon kapena bwalo) cholumikizidwa ku chizindikiro cha valavu yoyendetsera ndi mzere wodulidwa. Nambala ya chizindikiro mkati mwa thovu imatsatira miyezo ya chomera koma imaizindikira bwino ngati gawo la SIS (monga, ZV-1001, pomwe 'Z' nthawi zambiri imatanthauza SIS/ESD, 'V' ya valavu).

Mfundo Yaikulu: Kodi Valavu Yozimitsa Mwadzidzidzi Imagwira Ntchito Bwanji?

Mfundo yogwirira ntchito imadalira pachitetezo cholepherakapangidwe kake ndi momwe actuator imayankhira chizindikiro kapena mphamvu ikatayika. Nayi chidule cha izi:

1. Ntchito Yachizolowezi:Chigamulo cha ESDV chikuchitika muTSEGULANIudindo. Izi zimafuna mphamvu:

* Oyambitsa Kubwerera kwa Masika:Choyatsira magetsi (pneumatic/hydraulic) chimagwiritsa ntchito mphamvu yoperekedwa kuti *chikanikizire* kasupe wamphamvu, ndikusunga valavu yotseguka motsutsana ndi mphamvu ya kasupe.

* Oyendetsa Magalimoto (Osazolowereka pa ESD):Mota imagwirira valavu yotseguka (kapena yotsekedwa) motsutsana ndi buleki kapena sipinara yamakina. Kutayika kwa mphamvu kumayambitsa vuto losalephera.

2. Mkhalidwe Wadzidzidzi Wapezeka:Masensa (zotumiza mphamvu, zowunikira kutentha, zowunikira moto, zowunikira mpweya, ndi zina zotero) amatumiza chizindikiro kwa SIS logic solver chomwe chimasonyeza ngozi yaikulu.

3. Chizindikiro cha Ulendo wa SIS:Chothetsera mfundo za SIS, kutengera mfundo zake zachitetezo zomwe zakonzedwa, chimatsimikiza kuti ulendo ukufunika. Chimatumizachizindikiro chamagetsiku valavu ya solenoid ya ESDV.

4. Kutaya Mphamvu ya Actuator (Gawo Lofunika):

* Kubwerera kwa Masika:Valavu ya solenoid imachotsa mphamvu nthawi yomweyo, ndikutulutsa mpweya/hydraulic pressure *kuchokera* ku actuator. Mphamvu yosungidwa mu kasupe wamphamvu wopanikizika imatulutsidwa.

* Mphamvu Yotseka:Mphamvu ya kasupe (kapena nthawi zina mphamvu ya hydraulic yosungidwa) imaposa mphamvu zilizonse zotsutsana nazo ndipo imayendetsa tsinde la actuator kuti lizungulire (mpira/gulugufe) kapena kukweza/kutsitsa (chipata) cha chiwalo chotseka valavu.

5. Kutseka kwa Valuvu:Chiwalo chotseka (mpira, chipata, diski) chimayenda mofulumira kupita kuYATSEKA KWAMBIRImalo, kutsekereza njira yoyendera njira.

6. Kudzipatula Kwachitika:Madzi owopsa a njira yowopsa ali mkati mwa gawo lokhalo lomwe lili pamwamba pa ESDV, zomwe zimaletsa kufalikira kwa vutoli.

Minofu Yomwe Ikugwira Ntchito: Oyambitsa Ma Valve Odzidzimutsa Mwadzidzidzi

Choyatsira magetsi ndi mphamvu yomwe imasintha chizindikiro chowongolera (kapena kutayika kwa mphamvu) kukhala mphamvu yamakina yofunikira kuti valavu isunthe mwachangu komanso modalirika. Kusankha choyatsira choyenera ndikofunikira kwambiri pakugwira ntchito kwa ESDV.

Mitundu Yodziwika ya ESDV Actuator:

1. Zoyambitsa Ma Diaphragm a Pneumatic Spring-Return:

* Mfundo yaikulu:Mpweya wopanikizika umagwira ntchito pa diaphragm yayikulu kuti utseke kasupe, ndikutsegula valavu. Kutulutsa mpweya (kudzera mu valavu ya solenoid) kumatulutsa kasupe, ndikutseka valavu.

* Ubwino:Zosavuta, zodalirika, zogwira ntchito mwachangu, zotetezeka mwachibadwa (zopanda nthunzi), mpweya wopezeka mosavuta.

* Zoyipa:Mphamvu yochepa pa ma valve akuluakulu kwambiri kapena kupsinjika kwakukulu, imafuna mpweya woyera/wouma, zomwe zingatheke kuti igwire ntchito pang'onopang'ono m'malo ozizira kwambiri.

* Kugwiritsa Ntchito Kawirikawiri:Ma valve ang'onoang'ono mpaka apakatikati a mpira ndi ma valve a gulugufe.

2. Makina Oyendetsera Piston Obwerera ndi Kubwerera ndi Hydraulic Spring:

* Mfundo yaikulu: Kupanikizika kwa madzi a hydraulic kumagwira ntchito pa pistoni kuti ikanikize kasupe wamphamvu, ndikutsegula valavu. Valavu ya Solenoid imataya mphamvu ya hydraulic, kasupe amatseka valavu.

* Zabwino: Mphamvu yotulutsa mphamvu zambiri yoyenera ma valve akuluakulu, ma valve a chipata, ndi magwiritsidwe ntchito amphamvu kwambiri. Nthawi zambiri imathamanga kuposa ma actuator akuluakulu a pneumatic. Yolimba.

* Zoyipa: Imafuna hydraulic power unit (HPU), kukhazikitsa kovuta kwambiri, kuthekera kwa kutulutsa madzi, komanso kukonza bwino.

* Kugwiritsa Ntchito Kawirikawiri: Ma valve akuluakulu a mpira, ma valve a chipata, kugwiritsa ntchito mphamvu yamagetsi (makamaka malo osungira mafuta ndi gasi, mapaipi).

3. Pneumatic/Hydraulic Scotch-Yoke kapena Rack & Pinion Actuators (Spring-Return):

* Mfundo yaikuluSinthani kayendedwe ka piston/diaphragm kukhala kayendedwe kozungulira pogwiritsa ntchito scotch-yoke kapena rack ndi pinion mechanisms. Spring-return imapereka mphamvu yoteteza kulephera.

* Zabwino: Mphamvu yabwino kwambiri yotulutsa mphamvu panthawi yonse yogwirira ntchito, kapangidwe kakang'ono (rack & pinion), koyenera ma valve ozungulira kotala (mpira, gulugufe, pulagi). Zimaphatikiza ubwino wa mphamvu/liwiro.

* Zoyipa: Zingakhale zovuta kwambiri kuposa zida zoyambira za diaphragm.

* Kugwiritsa Ntchito Kawirikawiri: Mitundu yosiyanasiyana ya ma valavu a mpira ndi gulugufe.

4. Zoyeretsera Magalimoto Amagetsi (zokhala ndi Ma Battery Backup/Fail-Safe Spring):

* Mfundo yaikulu: Mota yamagetsi imayendetsa valavu yotseguka kapena yotsekedwa. Kuti igwiritsidwe ntchito ndi ESDV, *iyenera* kukhala ndinjira yotetezeka kulephera kwa makina, nthawi zambiri imakhala ngati kasupe, yomwe imagwira ntchito mphamvu ikatha kuti iyendetse valavu kupita pamalo otetezeka. Kusunga batri kumatha kuyambitsa injini ulendo womaliza ngati mphamvu yatha *pambuyo poti chizindikiro chalandiridwa koma chisanatsekedwe.

* Zabwino: Palibe chifukwa chogwiritsa ntchito makina a mpweya/hydraulic, malo olondola (ngakhale kuti sakufunika pa ESD), mphamvu yayikulu.

* Zoyipa: Nthawi yotseka pang'onopang'ono poyerekeza ndi mphamvu/kasupe wamadzimadzi, mtengo wokwera, zovuta za kasupe, ngozi yomwe ingachitike (imafuna satifiketi ya madera oopsa).

* Kugwiritsa Ntchito Kawirikawiri: Malo omwe mpweya/madzi operekera madzi ndi osagwira ntchito, kapena ma valve ang'onoang'ono omwe liwiro silili lofunika kwambiri. Sizofala kwambiri pa ntchito zofunika kwambiri za ESDV kuposa ma spring-return oyendetsedwa ndi madzi.

Sekondi Iliyonse Imafunika Kuimbidwa: Nthawi Yotseka Valve Yotseka Mwadzidzidzi

Nthawi yotseka mwina ndi imodzi mwa mfundo zofunika kwambiri pa ntchito ya ESDV. Imakhudza mwachindunji mawerengedwe otsimikizira a Safety Integrity Level (SIL) a Safety Instrumented Function (SIF).

* Chifukwa Chake Kuthamanga Kuli Kofunika:Pakagwa ngozi monga kutayikira kwakukulu kapena moto, kuchuluka kwa zinthu zoopsa zomwe zimatulutsidwa musanazichotseretu kumagwirizana ndi kuchuluka kwa madzi omwe amayenda komanso nthawi yomwe valavu imatseka. Kutseka mwachangu kumachepetsa kutulutsidwa, kuchepetsa kuopsa kwa ngoziyo (kukula kwa moto, kufalikira kwa mitambo ya poizoni, kutayikira kwa chilengedwe).

* Zofunikira Zachizolowezi:Nthawi yotseka ya ESDV nthawi zambiri imafotokozedwa mu mtundu waSekondi imodzi mpaka zisanuKuyambira pachiyambi cha chizindikiro cha ulendo mpaka kufika potseka ndi kutseka kwathunthu. Ma valve ang'onoang'ono (monga mainchesi 2-6) nthawi zambiri amakhala ndi masekondi 1-2. Ma valve akuluakulu (monga mainchesi 24+) kapena ma valve a chipata angafunike masekondi 5 kapena kuposerapo pang'ono, ngakhale kuti nthawi zonse amafunikira kuthamanga mofulumira.

* Zinthu Zomwe Zimakhudza Nthawi Yotseka:

* Kukula kwa Vavu ndi Mtundu:Ma valve akuluakulu amakhala ndi kulemera kochulukirapo koti ayende. Ma valve a pachipata amafunika kusuntha kwa mzere wautali kuposa ma valve a mpira/gulugufe ozungulira kotala.

* Mtundu ndi Kukula kwa Actuator:Ma actuator a hydraulic nthawi zambiri amatseka ma valve akuluakulu mwachangu kuposa pneumatic. Kukula kwa actuator (mphamvu yokwanira ya masika/malo a pistoni) ndikofunikira kwambiri.

* Mikhalidwe ya Njira:Kupanikizika kwakukulu kwa mavavu kumapangitsa kuti pakhale kutseka kotsutsana ndi mphamvu, zomwe zimafuna actuator yamphamvu kwambiri.

* Kusamvana ndi Kukangana:Kukangana kwa ma tsinde a valve ndi kukangana kwa mkati mwa zigawo ziyenera kuchepetsedwa.

* Liwiro la Valavu ya Solenoid:Valavu ya solenoid iyenera kutulutsa mphamvu ya actuator mwachangu kwambiri.

* Kuchedwa kwa Dongosolo Lolamulira:Nthawi ya SIS logic solver kuti igwiritse ntchito chizindikiro ndikupatsa mphamvu/kuchotsa mphamvu ya solenoid imawonjezera nthawi yonse (ngakhale nthawi zambiri ma milliseconds).

* Kuyesa:Kuyesa kwa Partial Stroke Testing (PST) kumayang'anira kayendetsedwe ka valavu popanda kuyenda konse, koma Kuyesa Kwathunthu kwa Stroke (FST) panthawi yotseka yomwe yakonzedwa ndikofunikira kuti zitsimikizire kuti nthawi yeniyeni yotseka ikukwaniritsa zofunikira. Ma ESDV ogwira ntchito bwino nthawi zambiri amakhala ndi zizindikiro zamakina zomwe zimasonyeza momwe kutsekedwa kulili.

Kapangidwe ka Chitetezo: Mbali Zofunikira za Valavu Yotseka

Kumvetsetsa zigawo zazikulu za msonkhano wa ESDV ndikofunikira:

1. Thupi la Valavu:Chigawo chachikulu chokhala ndi kupanikizika, chomwe chimasunga ziwalo zamkati. Chopangidwa ndi zipangizo zolimba (chitsulo cha kaboni, chitsulo chosapanga dzimbiri, zitsulo zosungunulira) zoyenera kupanikizika, kutentha, ndi kuwononga madzi. Chimaphatikizapo malekezero opindika, olumikizidwa, kapena olumikizidwa kuti alumikizane ndi mapaipi. Kapangidwe kotetezeka pamoto malinga ndi API 607/6FA, ISO 10497 ndi kofunikira kwambiri.

2. Boneti:Chomangira chomwe chimalumikiza thupi la valavu ndi choyatsira, zomwe zimapangitsa kuti pakhale malire ozungulira tsinde. Chimaphatikizapo kulongedza kuti tsinde lisatuluke.

3. Dulani:Zigawo zamkati zomwe zimayendetsa kuyenda ndi kupereka chitseko:

* Membala Wotseka:Gawo lomwe limasuntha kuti lizitseke kuyenda (Mpira, Chipata, Chimbale/Chidebe).

* Mipando:Malo opangidwa ndi makina olondola omwe chiwalo chotseka chimatseka kuti chitseke mwamphamvu ngati thovu. Nthawi zambiri chimakhala cholimba (elastomer monga PTFE) kapena chitsulo kuchokera kuchitsulo kupita kuchitsulo. Chofunika kwambiri pakugwira ntchito kwa ESDV.

* Tsinde:Amalumikiza actuator ku chiwalo chotseka, kutumiza kayendedwe. Ayenera kupirira kukankhidwa/kugwedezeka popanda kupindika kapena kusweka.

4. Woyambitsa:Monga tafotokozera kale (Pneumatic Diaphragm, Hydraulic Piston, Scotch-Yoke, Rack & Pinion, Electric yokhala ndi Spring). Imapereka mphamvu ndi kuyenda.

5. Valavu ya Solenoid:Ma valve oyendetsedwa ndi magetsi omwe amayendetsedwa ndi SIS. Amatsogolera kapena kutulutsa mphamvu ya mpweya/hydraulic kupita/kuchokera ku actuator kuti ayambe kutsegula kapena kutseka (kwambiri). Ma solenoids osafunikira (2oo2, 2oo3 vote) ndi ofala kwambiri pakugwiritsa ntchito SIL yapamwamba.

6. Maswichi Oletsa/Zotumiza Malo:Perekani mayankho amagetsi ku makina owongolera (DCS/SIS) kutsimikizira malo enieni a valavu (Yotseguka, Yotsekedwa, nthawi zina Yapakatikati). Chofunika kwambiri pakudziwitsa wogwiritsa ntchito komanso kuzindikira za SIS.

7. Chizindikiro cha Malo Akomweko:Mbendera kapena cholozera chowoneka bwino chomwe chikuwonetsa momwe CHOTSEGULIRA/CHOTSEKA chilili pamalo a valavu.

8. Kubwerezabwereza kwa Buku:Njira (yogwiritsira ntchito gudumu lamanja, lever, pampu yamanja ya hydraulic) yomwe imalola ogwiritsa ntchito kutsegula kapena kutseka valavu pamanja panthawi yokonza kapena ngati choyendetsera chalephera. Sichidutsa ntchito yodzitetezera yokha.

9. Zowonjezera (Nthawi zambiri zimaphatikizidwa):Zowongolera zosefera mpweya (za mpweya wothamanga), mavalavu otulutsa mpweya mwachangu (kuti atseke mofulumira), matanki odzaza mpweya (kuti asunge mpweya kuti ugwire ntchito kamodzi kokha ngati mpweya watayika), mavalavu otsekera mpweya.

Chilankhulo cha Zithunzi: Chidule cha Zizindikiro za Valve Yotseka ndi Miyezo

Monga momwe zafotokozedwera mu gawo la P&ID, chizindikirocho chikuwonetsa bwino ESDV/SDV:

* Chizindikiro cha Mtundu wa Valavu:Mpira (Ma Triangles + Mzere), Chipata (Rectangle Yotsetsereka), Gulugufe (Mzere Kudutsa Mzere).

* Chizindikiro cha Actuator:Chipinda Cholimba kapena Chosweka Cholumikizidwa ku chizindikiro cha valavu.

* Zolemba:"ESD", "SD", kapena "XV" zolembedwa bwino pa chizindikiro cha actuator.

* Kulephera Kuchitapo Kanthu:"FC" (Fail Close - yodziwika kwambiri) kapena "FO" (Fail Open) yasonyezedwa.

* Ulalo wa SIS:Buluu la chida (monga Hexagon) lolumikizidwa ndi mzere wodulidwa ku actuator, lomwe lili ndi nambala ya chizindikiro cha SIS (monga ZV-1001).

Miyezo Yofunika:ISA-5.1 (Zizindikiro ndi Kuzindikiritsa Zipangizo) ndiye muyezo waukulu ku North America. ISO 14617 (Zizindikiro Zojambulira Zithunzi) imagwiritsidwa ntchito padziko lonse lapansi. Kugwirizana mkati mwa miyezo ya P&ID ya chomera ndikofunikira kwambiri.

Chizindikiro cha Valavu Yotseka Mwadzidzidzi

Oteteza Ma Hydrocarbon: Ma Valves Otsekedwa Mwadzidzidzi mu Mafuta ndi Gasi

Makampani opanga mafuta ndi gasi ndi omwe amagwiritsa ntchito kwambiri ma ESDV. Zotsatirapo zake zomwe zingachitike chifukwa cha kulephera - moto waukulu, kuphulika, kutulutsidwa kwa poizoni, masoka achilengedwe, ndi kutayika kwa miyoyo - ndi zazikulu kwambiri. Ma ESDV amapezeka paliponse mu unyolo wonse wamtengo wapatali:

1. Kumtunda (Ma Wellheads, Ma Platforms, Ma FPSO):

* Wellhead ESDVs:Imayikidwa pamitengo ya Khirisimasi (pamwamba/pansi pa nyanja) kuti ipatule zitsime zamadzimadzi pazidzidzidzi (monga kuphulika kwa madzi, moto). Pakakhala kupsinjika kwakukulu (zitsime za HPHT). Mafotokozedwe a API 6A ndi ofala.

* Ma ESDV a Manifold/Paipi:Patulani magawo a mizere yoyendera, mizere yosonkhanitsira, kapena mapaipi otumiza kunja pa nsanja kapena ma FPSO. Mafotokozedwe a API 6D. Kapangidwe kotetezeka pamoto ndi kofunikira.

* Njira Zophunzitsira za ESDV:Patulani zida zazikulu monga zolekanitsa, ma compressor, mapampu ngati moto wayamba kapena walephera.

2. Pakati pa Madzi (Mapaipi, Malo Opampu/Ma Compressor):

* Ma Block Valve (Nthawi zambiri ESDVs):Imayikidwa nthawi ndi nthawi m'mapaipi kuti ichotse zigawo zosweka, kuchepetsa kuchuluka kwa madzi omwe atuluka. Kugwiritsa ntchito mphamvu kuchokera ku malo owongolera ndi koyenera. API 6D.

* Ma ESDV a Siteshoni:Patulani mapampu, ma compressor, ma mita, ndi matanki osungiramo zinthu mkati mwa malo osungiramo zinthu.

3. Pansi pa mtsinje (Mafakitale Oyeretsera Zinthu, Zomera za Petrochemical, Malo Osungiramo Zinthu a LNG):

* Ma ESDV a Unit Isolation:Patulani mwachangu zipangizo zonse zopangira (monga Crude Distillation, FCCU, Hydrocracker) pa nthawi ya moto waukulu kapena zochitika zoopsa.

* Chitetezo cha Zipangizo za ESDV:Patulani uvuni, ma reactor, zipilala, ndi ma compressor akuluakulu.

* Kutsegula/Kutsitsa Ma ESDV:Patulani zida zankhondo zapamadzi kapena za sitima pakagwa ngozi.

Zofunikira Zapadera za Mafuta ndi Gasi:

* Miyezo Yokhwima:Miyezo ya API ndiyo ikuluikulu: API 6A (Wellhead), API 6D (Pipeline/General), API 607/6FA (Fire Test). ISO 10497 (Fire Test) imagwiritsidwanso ntchito. Chitsimikizo cha SIL malinga ndi IEC 61508/61511 ndi chokhazikika.

* Kapangidwe Kotetezeka Pamoto:Ma ESDV *ayenera* kusunga mphamvu ya kuthamanga kwa mpweya komanso kuwongolera kutuluka kwa madzi mkati/kunja panthawi yoyaka moto komanso pambuyo pake (nthawi zambiri mphindi 30 pa kutentha kwa 1400-1700°F). Izi zimafuna kulongedza kwapadera kwa tsinde, maboneti otambasuka, zisindikizo za graphite, ndi mapangidwe a mipando yachitsulo.

* Kusankha Zinthu:Ayenera kugwira ntchito yonyowa (H2S – NACE MR0175/ISO 15156), kupanikizika kwakukulu (HPHT), kutentha kwa cryogenic (LNG), ndi madzi owononga. Zitsulo zosapanga dzimbiri ziwiri, Inconel, Monel ndizofala.

* Kugwira Ntchito Molimba:Ma actuator a hydraulic spring-return akupezeka kwambiri chifukwa cha mphamvu zambiri zomwe zimafunika pa ma valve akuluakulu komanso kupanikizika kwakukulu, makamaka kumtunda. Machitidwe owonjezera mphamvu ndi ofala.

* Ma ESDV a pansi pa nyanja:Kuyimira kudalirika kwakukulu ndi ukadaulo, komwe kumapangidwira kuya kwambiri, kupsinjika, ndi kugwiritsa ntchito kutali popanda njira yokonzera. Kuchuluka kwa zinthu ndi kudalirika kwambiri ndizofunikira kwambiri.

Kutsiliza: Cholepheretsa Chofunika Kwambiri

Ma Vavu Ozimitsa Mwadzidzidzi ndi ochulukirapo kuposa mavavu okha; ndi oteteza mwaluso chitetezo cha mafakitale. Kapangidwe kawo kosalephera, kuchitapo kanthu mwachangu, kudalirika kwambiri, komanso udindo wofunikira mkati mwa Safety Instrumented Systems zimawapangitsa kukhala mzere womaliza wodziteteza ku zochitika zoopsa. Kumvetsetsa ntchito yawo, zigawo zake, mfundo yogwirira ntchito, ndi zofunikira zomwe zimayikidwa pa iwo - makamaka m'mafakitale oopsa kwambiri monga mafuta ndi gasi - ndikofunikira kwa mainjiniya, ogwira ntchito, ndi akatswiri achitetezo. Kuyambira chizindikiro chomwe chili pa P&ID mpaka valavu yayikulu papulatifomu yakunja, ESDV imayima ngati mlonda wofunikira, wokonzeka nthawi zonse kuchitapo kanthu pamene sekondi iliyonse ikufunika, kuteteza anthu, dziko lapansi, ndi katundu wamtengo wapatali. Kufotokozera bwino, kukhazikitsa, kuyesa kolimba (kuphatikiza PST ndi FST), komanso kukonza mosamala sikungatheke kuti zitsimikizire kuti oteteza chete awa akuchita ntchito yawo yopulumutsa miyoyo bwino akafunsidwa.