Ukuhlolwa kokubukeka nokuhlolwa kwamandla kwevalvu

Kuyo yonke inqubo yokuklama, ukukhiqiza, ukufakwa, isimo sokusebenza, ukusebenza nokugcinwa, zonke izinyathelo akufanele zikhululeke. Indlela yokunquma ukuthi kunenkinga nge-valve ngaphambi kokulethwa noma ngemva kokufakwa okuphelele? Lokhu kudinga ukudlula ukuhlolwa kokubukeka nokuhlola okuthile kokusebenza ukuze kuhlolwe. Ngale miphumela yokuhlolwa, amaphutha angadalulwa futhi alungiswe ngokufanele, futhi kuphela ngemva kokuba zonke izivivinyo sezifanelekile lapho zingase zisetshenziswe khona. Ngakho, yimiphi imininingwane okufanele siyinake ekuhloleni ukubukeka kwethu? Kubandakanyani ukuhlolwa kokusebenza?

Kungani i-valve ihluleka njalo? Kuyo yonke inqubo yokuklama, ukukhiqiza, ukufakwa, isimo sokusebenza, ukusebenza nokugcinwa, zonke izinyathelo akufanele zikhululeke. Indlela yokunquma ukuthi kunenkinga nge-valve ngaphambi kokulethwa noma ngemva kokufakwa okuphelele? Lokhu kudinga ukudlula ukuhlolwa kokubukeka nokuhlola okuthile kokusebenza ukuze kuhlolwe. Ngale miphumela yokuhlolwa, amaphutha angadalulwa futhi alungiswe ngokufanele, futhi kuphela ngemva kokuba zonke izivivinyo sezifanelekile lapho zingase zisetshenziswe khona. Ngakho, yimiphi imininingwane okufanele siyinake ekuhloleni ukubukeka kwethu? Kubandakanyani ukuhlolwa kokusebenza?

Ukuhlola okubonakalayo

1. Ukuthi ingaphakathi nengaphandle le-valve yomzimba line-trachoma, i-crack nokunye ukukhubazeka.

2, isihlalo se-valve nesihlanganisi somzimba se-valve siqinile, i-valve core nesihlalo se-valve asiguquguquki, indawo yokuvala ayinamaphutha.

I-3, uxhumano lwe-spool ne-spool luyavumelana nezimo futhi luthembekile, ukugoba kwesiqu, ukulimala kwentambo, ukugqwala.

I-4, ukupakisha, ukulimala kokuguga kwe-washer, i-valve evulekile eguquguqukayo, njll.

I-5, kufanele kube ne-nameplate emzimbeni we-valve, umzimba we-valve kanye ne-nameplate kufanele ifake: igama lomkhiqizi, igama le-valve, ingcindezi yegama, ububanzi begama kanye nokunye ukuhlonza.

6. Isikhundla sokuvula nokuvala se-valve ngesikhathi sokuthutha kufanele sihlangabezane nezidingo ezilandelayo:

(a) I-valve yesango, i-globe valve, i-throttle valve, i-butterfly valve, i-valve engezansi, i-valve elawulayo kanye namanye ama-valve kufanele abe sesimweni sokuvaleka ngokugcwele.

(b) I-valve yepulaki nezingxenye zokuvala ze-valve yebhola kufanele zibe sendaweni evuleke ngokugcwele.

(c) Ivalvu ye-diaphragm kufanele ibe sendaweni evalekile, akumele ivalwe iqine kakhulu, ukuvikela ukulimala kwevalvu ye-diaphragm.

(d) Idiski lama-valve okuhlola kufanele ivalwe futhi ivikeleke.

I-7, i-valve yokuphepha yohlobo lwasentwasahlobo kufanele ibe nophawu lokuhola, i-valve yokuphepha yohlobo lwe-lever kufanele ibe nedivayisi yokubeka isando esindayo.

I-8, i-valve yokuhlola i-disc noma isenzo se-spool kufanele iguquguquke futhi inembile, ingabi ne-eccentricity, i-displacement noma i-skew phenomenon.

9, irabha yolwelwesi, i-enamel yoqweqwe lwawo kanye ne-valve yepulasitiki engaphakathi kufanele ibe bushelelezi, i-lining kanye ne-matrix kuhlanganiswe ngokuqinile, kungabikho ukuqhekeka, ukubhuquza nokunye ukukhubazeka.

I-10, indawo yokuvalwa kwe-flange kufanele ihlangabezane nezidingo ngaphandle kwemihuzuko ye-radial.

11, i-valve akufanele yonakaliswe, izingxenye ezingekho, ukugqwala, i-nameplate off nezinye izenzakalo, futhi umzimba we-valve akufanele ungcolile.

I-12, imikhawulo yomibili ye-valve kufanele ivikelwe ngesembozo sokuzivikela, isibambo noma ukusebenza kwesondo lesandla kufanele kube nezimo, akukho mkhuba we-jam.

13. Isitifiketi sekhwalithi yevalvu sizoqukatha okuqukethwe okulandelayo:

(a) Igama lomkhiqizi kanye nosuku lokukhiqiza.

(b) Igama lomkhiqizo, imodeli kanye nencazelo.

(c) Ingcindezi yamagama, usayizi ojwayelekile, izinga lokushisa elisebenzayo nelisebenzayo.

(d) Izinga, isiphetho kanye nosuku lokuhlolwa.

(e) Inombolo yefekthri, isiginesha kanye nesigxivizo somhloli kanye nomhloli onomthwalo wemfanelo.

Ukukhethwa kwama-actuator kagesi ama-valve angu-1 no-2

I-valve actuator kagesi iyisisetshenziswa esisetshenziselwa ukusebenza nokuxhuma i-valve. Idivayisi ishayelwa ngogesi futhi ukunyakaza kwayo kungalawulwa ngokushaya, i-torque noma i-axial thrust. Ngenxa yedivayisi kagesi ye-valve kufanele isebenze izici kanye nokusetshenziswa kwayo kuncike ohlotsheni lwe-valve, imininingwane esebenzayo yedivayisi kanye nokuma kwevalvu epayipini noma impahla. Ngakho-ke, lawula ukukhetha okulungile kwedivayisi kagesi ye-valve; Kubalulekile ukucabangela ukuvimbela ukugcwala ngokweqile (i-torque yokusebenza ephakeme kune-torque yokulawula).

Ukukhetha okulungile kwedivayisi kagesi ye-valve kufanele kusekelwe kulokhu:

1. Itorque esebenzayo: Itorque esebenzayo iyipharamitha eyinhloko yokukhetha idivayisi kagesi yevalvu. I-torque ephumayo yedivayisi kagesi kufanele ibe izikhathi ezingu-1.2 ~ 1.5 zetorque enkulu yokusebenza kwevalvu.

2. I-Operation thrust: kunezinhlobo ezimbili zesakhiwo sokusingatha sedivayisi kagesi ye-valve, eyodwa ayinayo i-thrust plate, futhi i-torque iphuma ngokuqondile ngalesi sikhathi; Enye ifakwe i-thrust disc, lapho i-torque yokukhiphayo iguqulwa ibe i-thrust ephumayo nge-stem nut ye-thrust disc.

3. Inombolo yokuzungezisa ishaft yokuphuma: inombolo yenombolo yokuzungezisa ye-valve yedivayisi kagesi ye-valve ihlobene nobubanzi be-valve, i-valve stem pitch kanye nenani lezintambo, ezibalwa ngokuvumelana ne-M=H/ZS (kwifomula : I-M iyinani lokuzungezisa idivaysi kagesi okufanele ihlangane no-H ukuphakama kokuvula kwe-valve, mm i-pitch ye-valve stem drive, mm;

4. Ububanzi be-stem: ohlotsheni olujikelezayo oluningi lwe-valve ye-stem evulekile, uma ububanzi be-stem enkulu obuvunyelwe ngomshini kagesi bungakwazi ukudlula isiqu se-valve, asikwazi ukubuthelwa ku-valve kagesi. Ngakho-ke, ububanzi bangaphakathi bomgodi wokuphuma ongenalutho wedivayisi kagesi kufanele bube bukhulu kunobubanzi obungaphandle besiqu se-valve ye-stem evulekile. Kwamanye ama-valve ajikelezayo kanye nama-valve amaningi ajikelezayo ku-valve yenduku emnyama, nakuba ungacabangi ububanzi be-stem ngenkinga, kodwa ekukhetheni kufanele futhi kubhekwe ngokugcwele ububanzi be-stem kanye nobukhulu bokhiye, ukuze umhlangano usebenze ngokujwayelekile.

5. Isivinini sokukhipha: isivinini sokuvula nokuvala i-valve siyashesha, kulula ukukhiqiza into yesiteleka samanzi. Ngakho-ke, ngokwemibandela ehlukene yokusetshenziswa, khetha isiqalo esifanele nesivinini esiseduze.

6. Imodi yokufaka nokuxhuma: imodi yokufaka idivayisi kagesi ihlanganisa ukufakwa okuqondile, ukufakwa okuvundlile nokufakwa phansi; Imodi yokuxhuma: i-thrust plate; I-valve iphuma phakathi (i-stem multi-turn valve); Induku emnyama ukuzungezisa okuningi; Ayikho i-thrust plate; Isiqu se-valve asidluli; Ingxenye yedivayisi kagesi ejikelezayo isetshenziswa kabanzi, iwukubona isilawuli sohlelo lwe-valve, isilawuli esizenzakalelayo kanye nemishini edingekayo elawulwa kude, esetshenziswa kakhulu kuvalvu wesifunda evaliwe. Kodwa-ke, izidingo ezikhethekile zedivayisi kagesi ye-valve kumele zikwazi ukukhawulela i-torque noma i-axial force. Ngokuvamile idivayisi kagesi ye-valve isebenzisa i-torque ekhawulela i-coupling.

Lapho ukucaciswa kwedivayisi kagesi kunqunywa, i-torque yayo yokulawula nayo inqunywa. Uma isebenza ngesikhathi esinqunyiwe, injini ngokuvamile ayilayishwa ngokweqile. Nokho, ingalayishwa ngokweqile uma:

1. Ukunikezwa kwamandla okuphansi, akukwazi ukuthola i-torque edingekayo, ukuze injini iyeke ukujikeleza.

2. Indlela yokukhawulela i-torque ayilungiswanga kahle ukuze ibe nkulu kunetorque emile, okuholela ekukhiqizeni okuqhubekayo kwetorque eyeqisayo, ukuze injini iyeke ukuzungezisa.

3. Uma iphuzu lisetshenziswa ngezikhathi ezithile, ukushisa okukhiqizwayo kuyanqwabelana futhi kudlule ukwazisa okuvunyelwe kwezinga lokushisa kwenjini.

4. Ngesizathu esithile isekethe ye-torque yokunciphisa i-torque iyehluleka futhi i-torque inkulu kakhulu.

5. Ukushisa okuphezulu kwe-ambient kunciphisa amandla okushisa enjini.

Lokhu okungenhla ngezinye zezizathu zokulayisha ngokweqile, ngenxa yalezi zizathu isenzakalo sokushisa kwemoto kufanele sicatshangelwe kusengaphambili, futhi sithathe izinyathelo zokuvimbela ukushisa ngokweqile.

Esikhathini esidlule, indlela yokuvikela i-motor ukusebenzisa ama-fuses, ukudluliselwa kwe-overcurrent, ama-thermal relays, amadivaysi e-thermostatic, njll., kodwa lezi zindlela nazo zinezinzuzo zazo kanye nokubi. Emishinini kagesi enomthwalo oguquguqukayo, ayikho indlela yokuvikela ethembekile. Ngakho-ke, inhlanganisela yezindlela kufanele yamukelwe. Kodwa-ke, ngenxa yomthwalo ohlukile wedivayisi ngayinye kagesi, kunzima ukubeka phambili indlela ebumbene. Kodwa ngokwengxenye enkulu, isisekelo esivumelana ngaso singatholakala.

Izindlela zokuvikela ukugcwala ngokweqile ezamukelwayo zingafingqwa zibe izinhlobo ezimbili:

1. Yahlulela ukwanda noma ukuncipha kwamandla okufaka amandla;

2. Injini ngokwayo ukunquma ukushisa.

Izindlela ezimbili ezingenhla, kungakhathalekile ukuthi imuphi umthamo wokushisa wemoto onikezwe umkhawulo wesikhathi. Kunzima ukuyenza ihambisane nezici zomthamo wokushisa wemoto ngendlela eyodwa. Ngakho-ke, kufanele sikhethe inhlanganisela yezindlela ezisuselwe esenzweni esinokwethenjelwa ngokuya ngembangela yomthwalo omningi ukuze sifinyelele ukuvikelwa kokulayisha ngokweqile.

I-motor yedivayisi kagesi ye-Rotock, ngoba ishumekwe emaphethelweni e-thermostat ngezinga elifanayo lokufakwa kwe-motor, lapho izinga lokushisa elilinganiselwe lifinyelelwa, i-loop yokulawula imoto izonqanyulwa. Umthamo wokushisa we-thermostat ngokwayo mncane, futhi izici zayo ezinqunyelwe isikhathi zinqunywa izici zamandla okushisa we-motor, ngakho-ke lena indlela ethembekile.

Izindlela zokuvikela eziyisisekelo zokulayisha ngokweqile yilezi:

1. Ukusebenza okuqhubekayo kwemoto noma ukusebenza kwendawo yokuvikela ukugcwala ngokweqile kusetshenziswa i-thermostat;

2. I-thermal relay isetshenziselwa ukuvikela ukuvinjwa kwezimoto;

3. Sebenzisa amafuse noma ama-overcurrent relay ezingozini zesekethe elifushane.

Isixazululo esiphelele sokuhlolwa kokubukeka kanye nezindlela zokuhlola amandla zama-valve Ukukhethwa kwama-valve kagesi actuators

Kuyo yonke inqubo yokuklama, ukukhiqiza, ukufakwa, izimo zokusebenza, ukusebenza, nokugcinwa, zonke izinyathelo akumele zixegiswe.i-valveUnganquma kanjani ukuthi kunenkinga ngaphambi kokushiya imboni noma ngemuva kokuqeda ukufakwa okuphelele? ?Lokhu kudinga ukuhlolwa ngokuhlolwa kokubukeka kanye nokuhlolwa kokusebenza okuthile. Ngale miphumela yokuhlolwa, ukukhubazeka kungadalulwa futhi ukulungiswa okuhambisanayo kungenziwa kuphela ngemva kokuba zonke izivivinyo sezifanelekile lapho kungase kusetshenziswe. Ngakho-ke, yimiphi imininingwane edinga ukunakwa ekuhlolweni kokubukeka Kuhlanganisani ukuhlolwa kokusebenza?

Kungani ama-valve ehluleka njalo? ?Kuyo yonke inqubo yokuklama, ukukhiqiza, ukufaka, izimo zokusebenza, ukusebenza, nokugcinwa, zonke izinyathelo akumele zixegiswe. Indlela yokunquma ukuthi kunenkinga nge-valve ngaphambi kokuba ihambe efektri noma ngemva kokufakwa okuphelele Lokhu kudinga ukuhlolwa okubonakalayo nokuhlolwa okuthile kokusebenza. Ngale miphumela yokuhlolwa, ukukhubazeka kungadalulwa futhi ukulungiswa okuhambisanayo kungenziwa kuphela ngemva kokuba zonke izivivinyo sezifanelekile lapho kungase kusetshenziswe. Ngakho-ke, yimiphi imininingwane edinga ukunakwa ekuhlolweni kokubukeka Kuhlanganisani ukuhlolwa kokusebenza?

Ukuhlola okubonakalayo

1. Ukuthi akhona amabhamuza, imifantu kanye nokunye ukukhubazeka endaweni engaphandle nangaphandle yomzimba wevalvu.

2. Ukuthi isihlalo se-valve kanye nomzimba we-valve kuxhunywe ngokuqinile, noma umgogodla we-valve nesihlalo se-valve kuyahambisana, nokuthi indawo yokuvala ayisebenzi yini.

3. Ukuthi ukuhlobana phakathi kwesiqu se-valve nomgogodla we-valve kuyaguquguquka futhi kuthembekile, noma ngabe isiqu se-valve sigobile, nokuthi imicu yonakele noma igqwalile.

4. Ukuthi ukupakisha kanye nama-gaskets asekhulile futhi awonakele, nokuthi ukuvuleka kwe-valve kuyaguquguquka, njll.

5. Kufanele kube ne-nameplate emzimbeni we-valve Umzimba we-valve kanye ne-nameplate kufanele ihlanganise: igama lomkhiqizi, igama le-valve, ukucindezela okuzisholo, ububanzi begama, njll.

6. Isikhundla sokuvula nokuvala se-valve ngesikhathi sokuthutha kufanele sihlangabezane nezidingo ezilandelayo:

(a) I-valve yesango, i-globe valve, i-throttle valve, i-butterfly valve,I-valve engezansi, i-valve elawulayo namanye ama-valve kufanele abe sendaweni evalwe ngokugcwele.

(b) Izingxenye zokuvala zamapulaki namavalvu amabhola kufanele zibe sendaweni evuleke ngokugcwele.

(c) Ivalvu ye-diaphragm kufanele ibe sendaweni evalekile futhi akufanele ivalwe iqine kakhulu ukuze kuvinjwe ukulimala kwevalvu ye-diaphragm.

(d)Hlola i-valveI-disc ye-valve kufanele ivalwe futhi ilungiswe.

7. Uhlobo lwasentwasahloboi-valve yokuphephaKufanele kube nesigxivizo sokuhola, futhi i-valve yokuphepha ye-lever kufanele ibe nedivayisi yokumisa enesisindo.

8. I-disc noma i-valve core ye-valve yokuhlola kufanele ihambe ngokuguquguqukayo nangokunembile ngaphandle kwe-eccentricity, i-displacement noma i-skew.

9. Ingxenye yangaphakathi yamavalvu anerabha anerabha, enamel-lined kanye nepulasitiki kufanele ibe isicaba futhi ibushelelezi, futhi ulwelwesi kanye nesisekelo kufanele kuboshwe ngokuqinile ngaphandle kweziphambeko njengokuqhekeka noma ukubhuquza.

10. Indawo yokuvala i-flange kufanele ihlangabezane nezidingo futhi akufanele ibe nemihuzuko e-radial.

11. Ivalvu akumele yonakale, ingekho izingxenye, igle, noma icwecwe igama layo, futhi umzimba wevalvu akufanele ungcole.

12. Zombili iziphetho ze-valve kufanele zivikelwe izembozo zokuzivikela, futhi isibambo noma isondo lesandla kufanele liguquguquke ekusebenzeni ngaphandle kwe-jamming.

13. Isitifiketi sekhwalithi yevalvu kufanele siqukathe okuqukethwe okulandelayo:

(a)Igama lomkhiqizi kanye nosuku lokukhiqiza.

(b) Igama lomkhiqizo, imodeli kanye nemininingwane.

(c) Ukucindezela okuzisholo, ububanzi obuncane, izinga lokushisa elisebenzayo nelisebenzayo.

(d) Amazinga asekelwe, ekupheleni kokuhlolwa kanye nosuku lokuhlolwa.

(e) Inombolo ye-serial yasefekthri, isignesha yomhloli kanye nomuntu ophethe ukuhlolwa.

1 2 Ukukhethwa kwama-actuator kagesi amavalvu

I-valve actuator kagesi iyithuluzi elisetshenziselwa ukusebenzisa i-valve futhi lixhunywe ku-valve. Idivayisi iqhutshwa ugesi, futhi inqubo yayo yokunyakaza ingalawulwa ngokushaya, i-torque noma i-axial thrust. Izici zokusebenza nezinga lokusebenzisa ledivayisi kagesi ye-valve kuncike ohlotsheni lwe-valve, imininingwane yokusebenza yocingo kanye nendawo yevalvu epayipini noma impahla. Ngakho-ke, kubalulekile ukwazi kahle ukukhetha okulungile kwemishini kagesi yamavalvu futhi ucabangele ukuvimbela ukugcwala (ithoshi esebenzayo ephakeme kunetorque yokulawula) ukuthi ingenzeki.

Ukukhetha okulungile kwedivayisi kagesi ye-valve kufanele kusekelwe kulokhu:

1. Itorque esebenzayo: Itorque esebenzayo iyipharamitha eyinhloko yokukhetha idivayisi kagesi yevalvu. I-torque ephumayo yedivayisi kagesi kufanele ibe izikhathi ezingu-1.2 kuya kwezingu-1.5 i-torque enkulu yokusebenza ye-valve.

2. I-Operating thrust: Kunezinhlobo ezimbili zezakhiwo zokusingathwa zamadivayisi kagesi we-valve Eyodwa ayinayo i-thrust plate, lapho i-torque iphuma ngokuqondile; i-stem nut ku-thrust plate Iguqulelwe ku-thrust ephumayo.

3. Inani lokuzungezisa kwe-shaft yokuphumayo: Inani lokuzungezisa kwe-shaft ephumayo yedivayisi kagesi ye-valve lihlobene nobubanzi obujwayelekile be-valve, i-valve stem pitch, kanye nenani lamakhanda entambo Ibalwa ngokuvumelana ne-M =H/ZS (lapho: M kuyisidingo sokuthi idivayisi kagesi ihlangabezane nenani eliphelele lokujika; H ubude bokuvulwa kwevalvu, mm; S iphimbo lentambo yokudlulisa isiqu se-valve, mm; Z inombolo yamakhanda entambo ye-valve stem).

4. Ububanzi besiqu se-valve: Kuma-valve esiqu aphendukayo amaningi, uma ububanzi besiqu se-valve enkulu obuvunyelwe idivayisi kagesi bungakwazi ukudlula esiqwini se-valve ye-valve efanisiwe, ngeke ihlanganiswe ibe yivalvu kagesi. Ngakho-ke, ububanzi bangaphakathi bomgodi wokuphuma ongenalutho wedivayisi kagesi kufanele bube bukhulu kunobubanzi obungaphandle besiqu se-valve ye-valve yesiqu esikhuphukayo. Kuma-valve aphenduka ingxenye kanye nama-valve esiqu esifihliwe kuma-valve aphendukayo amaningi, nakuba ukudlula kobubanzi besiqu se-valve kungadingeki kucatshangelwe, ububanzi besiqu se-valve kanye nosayizi wokhiye wokhiye kufanele futhi kucatshangelwe ngokugcwele lapho kukhethwa futhi kuhambisana, ukuze bangasebenza ngokujwayelekile ngemva kokuhlangana.

5. Ijubane lokukhiphayo: Ivalvu ivula futhi ivaleke ngokushesha okukhulu futhi ijwayele isando samanzi. Ngakho-ke, isivinini esifanele sokuvula nokuvala kufanele sikhethwe ngokuvumelana nezimo ezihlukene zokusetshenziswa.

6. Izindlela zokufaka nezindlela zokuxhuma: Izindlela zokufaka izinto zikagesi zihlanganisa ukufakwa okuqondile, ukufakwa okuvundlile, nokufakwa kwaphansi yizi: i-thrust stem valve (i-stem ekhuphukayo i-multi-turn thrust); ipuleti le-valve alidluli; Kodwa-ke, akunakunakwa ukuthi izidingo ezikhethekile zedivayisi kagesi ye-valve kumele zikwazi ukukhawulela i-torque noma i-axial force. Ngokuvamile amadivaysi kagesi ama-valve asebenzisa ama-couplings akhawulela i-torque.

Ngemuva kokuthi kunqunywe imininingwane yedivayisi kagesi, i-torque yayo yokulawula nayo inqunywa. Izimoto ngokuvamile azilayishwa ngokweqile uma zisebenza isikhathi esinqunyiwe ngaphambili. Nokho, ingalayishwa ngokweqile uma izimo ezilandelayo zenzeka:

1. I-voltage yokunikezwa kwamandla iphansi futhi i-torque edingekayo ayikwazi ukutholwa, okubangela ukuthi injini imise ukujikeleza.

2. Indlela yokukhawulela i-torque isethwe ngokungalungile ukuze ibe nkulu kunetorque yokuma, okubangela ukuba itorque eyeqile iqhubeke kukhiqizwa futhi ibangele ukuthi injini iyeke ukujikeleza.

3. Uma isetshenziswa njalo njengokugijima, ukushisa okukhiqizwayo kuyanqwabelana futhi kudlule izinga lokushisa elivumelekile lemoto.

4. Ngasizathu simbe, umjikelezo we-torque ekhawulela ukungasebenzi kahle, okuholela ku-torque eyeqile.

5. Izinga lokushisa lendawo yokusebenza liphezulu kakhulu, okuzonciphisa ngokuqhathaniswa amandla okushisa enjini.

Okungenhla ezinye zezizathu zokushisa ngokweqile kwe-Motor okubangelwa yilezi zizathu kufanele kucatshangelwe kusengaphambili futhi kufanele kuthathwe izinyathelo zokuvimbela ukushisa ngokweqile.

Esikhathini esidlule, izindlela zokuvikela ama-motor kwakuwukusebenzisa ama-fuses, ama-overcurrent relays, ama-thermal relays, ama-thermostats, njll. Nokho, lezi zindlela zinezinzuzo nezingozi zazo Kumishini enemithwalo eguquguqukayo njengamadivayisi kagesi, akukho ukuvikelwa okuthembekile indlela. Ngakho-ke, kufanele kusetshenziswe inhlanganisela yezindlela ezihlukahlukene. Nokho, ngenxa yezimo ezihlukene zomthwalo wedivayisi ngayinye kagesi, kunzima ukuphakamisa indlela ehlanganisiwe. Kodwa ngokuhlanganisa izimo eziningi, singathola nokuvumelana.

Izindlela zokuvikela ukugcwala ngokweqile ezamukelwayo zingafingqwa zibe izinhlobo ezimbili:

1. Gwema ukwanda noma ukuncipha kwamandla okufaka amandla;

2. Nquma ukushisa okukhiqizwa injini ngokwayo.

Kungakhathalekile ukuthi yiziphi izindlela ezimbili ezingenhla, umkhawulo wesikhathi onikezwe amandla okushisa emoto kufanele ucatshangelwe. Kunzima ukuyenza ihambisane nezici zomthamo oshisayo wemoto usebenzisa indlela eyodwa. Ngakho-ke, inhlanganisela yezindlela ezingasebenza ngokuthembekile ngokuya ngembangela yokugcwala ngokweqile kufanele kukhethwe ukuze kuzuzwe ukuvikeleka kokugcwala ngokweqile.

I-motor yedivayisi kagesi ye-Rotork ine-thermostat eshumekwe ekujikeni okuhambisana nezinga lokushisa le-motor Uma izinga lokushisa elilinganiselwe lifinyelelwa, isekethe yokulawula imoto izonqanyulwa. Umthamo wokushisa we-thermostat ngokwayo mncane, futhi izici zayo zokukhawulela isikhathi zinqunywa izici zamandla okushisa we-motor, ngakho-ke lena indlela ethembekile.

Izindlela zokuvikela eziyisisekelo zokulayisha ngokweqile yilezi:

1. I-thermostat isetshenziselwa ukuvikela ukugcwala ngokweqile kwenjini ekusebenzeni okuqhubekayo noma ekusebenzeni kwe-inching;

2. I-thermal relay isetshenziselwa ukuvikela injini ekumeni;

3. Sebenzisa amafuse noma ama-overcurrent relay ezingozini zesekethe elifushane.