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Malingaliro oyambira"BPCS"

Basic process control system: Imayankha ma sign olowera kuchokera munjira, zida zokhudzana ndi dongosolo, makina ena osinthika, ndi/kapena woyendetsa, ndikupanga dongosolo lomwe limapangitsa kuti njira ndi zida zokhudzana ndi dongosolo zizigwira ntchito momwe zimafunikira, koma sizimachita chilichonse. chitetezo cha zida ndi SIL≥1 yolengezedwa.(Kaphatikizidwe: GB/T 21109.1-2007 (IEC 61511-1: 2003, IDT) Chitetezo chogwira ntchito chachitetezo chogwiritsidwa ntchito pamakampani opanga - Gawo 1: Zomangamanga, matanthauzidwe, dongosolo, zida ndi mapulogalamu apulogalamu 3.3.2)

Basic Process Control System: Imayankha ma siginecha olowera kuchokera mumiyezo yamachitidwe ndi zida zina zofananira, zida zina, makina owongolera, kapena oyendetsa.Malinga ndi lamulo lowongolera ndondomeko, algorithm ndi njira, chizindikirocho chimapangidwa kuti chizindikire magwiridwe antchito ndi zida zake zofananira.Muzomera za petrochemical kapena zomera, njira yoyendetsera ntchito nthawi zambiri imagwiritsa ntchito distributed control system (DCS).Makina oyang'anira njira zoyambira sayenera kuchita ntchito zotetezedwa za SIL1, SIL2, SIL3.(Kaphatikizidwe: GB/T 50770-2013 Code for design of petrochemical safety instrumented systems 2.1.19)

『SIS』

Chitetezo cha zida zachitetezo: Chida chogwiritsidwa ntchito kuti chigwiritse ntchito chimodzi kapena zingapo zachitetezo cha chida.SIS ikhoza kukhala ndi kuphatikiza kulikonse kwa sensor, logic solver, ndi chinthu chomaliza.

Chitetezo cha zida;SIF ili ndi SIL yapadera kuti ikwaniritse ntchito zotetezera chitetezo, zomwe zitha kukhala ntchito yoteteza chitetezo cha zida komanso ntchito yowongolera chitetezo cha zida.

Mulingo wodalirika wachitetezo;SIL imagwiritsidwa ntchito kufotokoza milingo yosiyana (imodzi mwa milingo 4) pazofunikira zachitetezo chachitetezo cha zida zoperekedwa ku zida zachitetezo.SIL4 ndiye mulingo wapamwamba kwambiri wachitetezo ndipo SIL1 ndiyotsika kwambiri.
(Katundu: GB/T 21109.1-2007 (IEC 61511-1: 2003, IDT) Chitetezo chogwira ntchito cha zida zogwiritsira ntchito makina opangira ma process Gawo 1: Chikhazikitso, matanthauzo, dongosolo, zida ndi mapulogalamu apulogalamu 3.2.72/3.2.71/ 3.2.74)

Chitetezo cha zida zachitetezo: Chida chogwiritsidwa ntchito chomwe chimagwira ntchito imodzi kapena zingapo zotetezedwa.(Kamutu: GB/T 50770-2013 Code for design of petrochemical security instrumented systems 2.1.1);

Kusiyana pakati pa BPCS ndi SIS

Chitetezo cha zida zachitetezo (SIS) chodziyimira pawokha BPCS (monga makina owongolera ogawa DCS, etc.), kupanga nthawi zambiri kumakhala kosalala kapena kosasunthika, chipangizocho chikangoyambitsa ngozi zachitetezo, zitha kukhala zolondola nthawi yomweyo, kotero kuti ndondomeko kupanga bwinobwino kusiya kuthamanga kapena basi kuitanitsa boma anakonzeratu chitetezo, ayenera kukhala kudalirika mkulu (ndiko, chitetezo zinchito) ndi kasamalidwe yokhazikika yokonza, ngati chitetezo zida dongosolo akulephera, nthawi zambiri kumabweretsa ngozi zoopsa chitetezo.(Katundu: General Administration of Safety Supervision No. 3 (2014) No. 116, Malingaliro Otsogolera a State Administration of Safety Supervision on Strengthening the Management of Chemical Safety Instrumentation Systems)

Tanthauzo la kudziyimira pawokha kwa SIS kuchokera ku BPCS: Ngati ntchito yanthawi zonse ya BPCS control loop ikukwaniritsa zofunikira izi, itha kugwiritsidwa ntchito ngati gawo lodziyimira palokha, BPCS control loop iyenera kulekanitsidwa mwakuthupi ndi chitetezo chachitetezo (SIS) loop SIF, kuphatikiza sensor, controller ndi chomaliza.

Kusiyana pakati pa BPCS ndi SIS:

Ntchito zosiyanasiyana zacholinga: ntchito yopanga / chitetezo;

Mayiko osiyanasiyana ogwirira ntchito: kuwongolera nthawi yeniyeni / kutsekereza nthawi yopitilira malire;

Zofunikira zodalirika zosiyana: SIS imafuna kudalirika kwakukulu;

Njira zosiyanasiyana zowongolera: kuwongolera kosalekeza monga chiwongolero chachikulu / malingaliro monga chiwongolero chachikulu;

Njira zosiyanasiyana zogwiritsira ntchito ndi kukonza: SIS ndi yovuta kwambiri;

Kulumikizana kwa BPCS ndi SIS

Kaya BPCS ndi SIS zitha kugawana zigawo zitha kuganiziridwa ndikutsimikiziridwa kuchokera muzinthu zitatu izi:

Zofunikira ndi mafotokozedwe amtundu wokhazikika, zofunikira zachitetezo, njira ya IPL, kuwunika kwa SIL;

Kuwunika kwachuma (ngati zofunikira zachitetezo zikukwaniritsidwa), mwachitsanzo, kusanthula kwa ALARP (kochepera momwe kungathekere);

Oyang'anira kapena mainjiniya amatsimikiziridwa kutengera zomwe wakumana nazo komanso kufuna kwawo.

Mulimonsemo, zofunikira zochepa kuti zikwaniritse zofunikira za malamulo ndi miyezo zimafunikira.