Chii chinonzi control valve?
Acontrol valvechinhu chekupedzisira chekudzora chinoshandiswa kudzora mafambiro emvura kuburikidza nemugero.Ivo vanogona throttle kuyerera pamusoro pemhando yakavhurika zvizere kusvika yakavharwa zvizere.A control valve yakaiswa perpendicular kuyerera, mutongi anogona kugadzirisa kuvhura kwevhavha pane chero nhanho pakati pe ON & OFF.
Mamiriro ezvinhu anokanganisa kusarudzwa kwevhavha:
Ivhavha yekudzora yakakosha mukushanda kwekuita.Hazvirevi chete izvo zvinotsanangurwa zvevhavha pachazvo zvakakosha, asi zvinodiwawo kunyatsofunga zvimwe zvinhu zvine chokuita nevhavhavha yekutonga kuitira kuti iite sezvinodiwa.Aya anotevera ndiwo mapoinzi makuru ekuchengeta mupfungwa kana uchitsanangura vharafu yekudzora:
1. Maitiro Chinangwa:
Izvo zvakakosha kuti unzwisise zvakanaka maitiro anosanganisira control valve.munhu anofanira kunzwisisa zvakakwana kutanga-up uye kuvhara-pasi kwegadziriro yacho pachayo, kusanganisira maitiro akakodzera mumamiriro ekukurumidzira.
2. Chinangwa chekushandisa:
Ivhavha yekudzora inoshandiswa kune zvinangwa zvakasiyana, Kudzora mavharuvhu anoshandiswa kudzora nhanho mutangi, kunewo mavharuvhu anodzora kudonhedza kudonhedza kubva kune-high-pressure system kusvika kune yakaderera-pressure system.
Kune mavharuvhu ekudzora anodzora kucheka-kubviswa nekuburitswa kwemvura, kusanganisa zvinwiwa zviviri, kupatsanura kuyerera mumativi maviri, kana kuchinjana zvinwiwa.Nokudaro, iyo yakanyatsokodzera yevhavhavha inosarudzwa mushure mekugadzirisa zvinangwa zveimwe valve.
3. Nguva yekupindura:
Nguva inotorwa kuti ipindure kuvhavha yekudzora mushure mekushandura chiratidzo chekugadzirisa ndiyo nguva yekupindura yevhavha yekudzora.Ivhavhavha yekudzora inosangana nenguva yekufa iyo plug hunde isati yagona kukunda kupokana kubva pakurongedza uye kutanga kufamba.Panewo nguva yekushanda inodiwa kuti ufambise chinhambwe chinodiwa.Izvo zvinodikanwa kufunga nezve mhedzisiro yeizvi zvinhu pane controllability uye chengetedzo yehurongwa hwese.Nokuda kwevhavha yekudzora yakanaka, nguva yekupindura inofanira kuva shoma.
4. Hunhu chaihwo hwekuita:
Sarudza pachine nguva kuvapo kana kusavapo kwekuzvienzanisa, huwandu hwekusiyana kwehuwandu hunodiwa hwekuyerera, kukurumidza kwekupindura, nezvimwe.
5. Mamiriro emvura:
Mamiriro akasiyana-siyana emvura anogona kuwanikwa kubva kune process data sheet, uye aya anova iwo mamiriro ekutanga ekusarudzwa kwevhavha yekudzora.Aya anotevera ndiwo makuru mamiriro ayo achashandiswa:
- Zita remvura
- Zvikamu, kuumbwa
- Flow rate
- Kudzvinyirira (pamativi ese ekupinza uye ekubuda kunze kwevhavha)
- Tembiricha·
- Viscosity
- Density (chaiyo giravhiti, molecular uremu)
- Mhepo pressure
- Chiyero chekupisa kwakanyanya (mhute yemvura)
6. Fluidity, akakosha maitiro:
Munhu anofanirwa kuona kuvepo kwenjodzi dzingangoitika maererano nemhando yemvura, kuora, kana slurry.
7. Rangeability:
Muchiitiko apo imwe yevhavhavha yekudzora haigone kupa iyo inodiwa rangeability, kufunga kwekushandiswa kwemavharuvhu maviri kana anopfuura kunodiwa.
8. Valve differential pressure:
Chiyero chekudzora dhizaini yekurasikirwa mupiping system idambudziko rakaoma.Sezvo mwero wevhavha yekusiyanisa kudzvinyirirwa kunodzikira maererano nekurasikirwa kwese kwesimba kwehurongwa hwese, iyo yakaiswa yekuyerera maitiro inotama kubva kune yekuzvarwa kuyerera maitiro.Kunyangwe zvisingaite kuita generalize, kukosha kwePR pakati pe0.3 ne0.5 kunowanzo kusarudzwa.
9. Shut-off pressure:
Kukosha kwepamusoro kwekusiyana kwekumanikidzwa pavhavha yevhavha yekuvhara-nguva inokosha data inofanira kushandiswa mukusarudzwa kwechigadziro uye mukuchengetedza kugadzirwa kwakasimba zvakakwana kune chikamu chimwe nechimwe chevhavha yekudzora.
Dhizaini umo kudzvanywa kwekutora kwakaiswa kuenzana nepamusoro-soro yekuvhara-kuvharika kwakawanda, asi nzira iyi inogona kuguma nekupfuura-kutsanangurwa kwemavharuvhu.Nokudaro zvakakosha kufunga nezvekushandiswa kwemamiriro ezvinhu chaiwo pakusarudza kuvharwa kwekuvhara.
10. Valve-seat leakage:
Inofanirwa kutsanangurwa zvakajeka kuwanda kwekudonha kwechigaro kunogona kuregererwa panguva yekuvharwa kwevhavha.Izvo zvinodiwawo kuziva frequency iyo iyo valve yekuvhara-kuvharwa mamiriro inoitika.
11. Kushanda kwevharuvhu:
Iko kune kunyanya marudzi maviri ekushanda kwevhavhavhavhavha:
Kushanda zvinoenderana neiyo valve yekupinza chiratidzo:Iyo yekuvhura uye yekuvhara nzira yevhavha inogadziriswa zvichienderana nekuti chiratidzo chekuisa kuvhavha chinowedzera kana kuderera, asi kushanda hakurevi kwakafanana nekutadza-kuchengetedzeka kushanda.Apo valve inovhara semugumisiro wekuwedzera kwekuwedzera, izvi zvinonzi zvakananga chiito.Kana vharuvhu ichivhura semugumisiro wekuwedzera kwechiratidzo chekupinza, iyi inonzi reverse action.
Kutadza-kuchengetedza kushanda:Kufamba kwekushanda kwevharuvhu kuri munzira yakachengeteka yemaitiro kana chiratidzo chekuisa uye simba rekupa rikarasika.Kuvhiya kwacho kunorondedzerwa se "kutadza kwemhepo kuvhara," "kuvhurika," kana "kukiya."
12. Kudzivirira-kuputika:
Zvichienderana nenzvimbo iyo vharafu inogadzikwa vharafu yekudzora inoda kukwana kwakakwana-kwechiratidzo chekuyeresa, ese magetsi anoshandiswa nevharuvhu anofanira kunge ane humbowo hwekuputika.
13. Simba rekupa:
Pneumatic power supply kune valve actuation inofanira kunge yakakwana uye inokosha kupa mweya wakachena nemvura, mafuta uye guruva rinobviswa kuitira kuti zvikamu zvakadai se actuator uye positioner zvishande pasina kukanganisa.Panguva imwecheteyo, munhu anofanirwa kuona iyo actuative kudzvanywa uye kugona kuitira kuchengetedza yakakwana inoshanda simba.
14. Madiro epombi:
Sarudza zvirevo zvepombi iyo iyo valve yekudzora yakaiswa.Izvo zvakakosha zvakatemwa zvinosanganisira dhayamita yepombi, zviyero zvepombi, kunaka kwezvinhu, rudzi rwekubatanidza kune pombi, zvichingodaro.
Nguva yekutumira: Kubvumbi-06-2022