Yaya za a zaɓe VSD Screw Air Compressor ko FSD Screw Air Compressor

Ku Yi Samun Permanent Magnet Variable-Frequency Ko Constant-Frequency Screw Air Compressor? Kalmomi Na Uku Suna Cikin Wannan.

Lokacin da sayen lantarki dunƙule iska kwampreso don masana'antu amfani, daya daga cikin mafi na kowa kalubale ne zabi tsakanin wani m maganadisu m-frequency drive (VFD) dunƙule kwampreso da wani gyarawa-gudun (m-frequency) dunƙule kwampreso. A kallon farko, bambancin farashin yana da bayyanesamfurin VFD yawanci yana kashe 30-50% a gaba. Amma, masu sarrafa masana'antar da suka ƙware sun san cewa farashin da aka soma saya shi ne kawai ƙarshen matsalar. Bambanci na ainihi ya ta'allaka ne a kan farashin aiki, amfani da makamashi, da kuma tabbaci na dogon lokaci. Don yanke shawara mai kyau, mai amfani da bayanai, ya kamata ka kimanta yanayin da kake ciki ta hanyar abubuwa uku masu mahimmanci: kwanciyar hankali na buƙatar gas, lokutan aiki da farashin wutar lantarki, da yanayin muhalli / kiyayewa. Bari mu raba kowane batu a zurfin.

1. Ƙarƙashin ƙasa Ka Yi la'akari da Yadda Ka Ke Neman Iska

Wannan shine babban kriterion na gaba daya—kuma wannan ne ke amsawa da yawa. Karamar kompresor ba ta tsakanin abu da zama wani adadin da aka saba, amma ya ke takaici da yaya za a iya samun sa da karamar da aka bukata a lokacin da suka dace.

· Dauri da karamar da yawa – Idan ake amfani da shiga da yawa a cikin shiga daya (misali: 24/7 injection molding, textile weaving, ko chemical processing) inda karamar da yawa da karamar da yawa suna dace da yawa, kompresor na fixed-speed shine babban abu da ke aiki. Ya ke aiki a karamar da motor na yawa duk lokaci, kuma ya ke dace da karamar da yawa (wanda ke nuna 85-95% na karamar da yawa). Ba shi da inverter loss, ba shi da control logic mai yawa, kuma karamar da binzana shine yawa. Aminin da karamar da yawa shine yawa, kuma abubuwan da ke aiki da su suna dace. Don hakan, model na VFD shine yawa—za ku biya yawa don abubuwan da kuma za ku amfani da su a lokacin da suka dace.

· Dauri da karamar da yawa – Wata ma'ana, ƙarshen kuma yanzu suna da ayyin gaba daya, ayyin kwayoyi, ko tashin bayani na wata kamar yadda suka yi. Misali, ƙarshen tire zai iya amfani da ƙarshen hawa mai ƙarfi a lokacin kura a rana, ƙarshen hawa ta yawa a lokacin kara a kafin rana, kuma ƙarshen hawa ta yawa a lokacin rana. A kwayar kafa, zai iya haɗawa da ƙarshen hawa ta yawa wanda zai iya shiga da fuskanci. A wannan yanayin, ƙarshen da ke da tsarin gaba daya zai biya ƙarshen hawa mai ƙarfi a lokacin da ba za su iya amfani ba – ya ke ke da tsarin gaba daya amma ya ci gaba daya, ya biya 30-70% na ƙarshen hawa ta yawa a lokacin da ba za su iya samun hawa mai kyau ba. Amma ƙarshen VFD na permanent magnet zai iya gyara tsarin gaba daya ta yawa da inverter na gaba daya, da yin gyara ta yawa da tsarin gaba daya (misali, ±0.01 MPa). Tsarin gaba daya zai iya samun ƙarshen hawa ta yawa a lokacin da ke ta yawa saboda tsarin gaba daya na permanent magnet wanda ya fara cire ƙarshen hawa ta yawa. Bayani na lokacin da aka sanya a cikin ƙarshen kuma sun nuna cewa ƙarshen VFD sun samun ƙarshen hawa ta yawa 20‑40%ta hanyar yin compare da wani uniti na ƙarama mai tsayi a cikin halin da ke cire kuma da karama. Lokacin da aka sanya shi ne 1.5 zuwa 2.5 shekara, bayan wannan kowace kilowatt-hour da aka rage ya ce da wajen ku.

Don haka, kafin ku zauna, sa ka saita flow meter ko ku duba jadawalin ku na production a cikin 1 week. Sa ka rubuta curve na air consumption. Idan ya zama kamar flat line, za ku yi fixed-speed; idan ya zama kamar roller coaster, VFD ne wani abu da ke taimaka ku.

2. Ku gano lokacin da aka amfani da shi a rana kuma kudin kudin elektriki na yankin ku

Wani air compressor ne mai yanka elektriki sosai. A cikin total cost of ownership (TCO) a cikin shekara 10, elektriki ta koma 70 zuwa 80% na kowace abu da ke shiga—wanda ya dace da purchase price (kamar 10 zuwa 15%) kuma maintenance (5 zuwa 10%). Wannan hisabu ya canza kyakkyawan yadda ake neman abun da ke cire.

· Lokacin da aka amfani da shi a rana (≥16 hours/day, 300+ days/year) – Yanzu zan iya kira cewa mafi kyau ne wani compressor ya gudanar da 6,000 awat a shekara. A mafi kyau na ƙarfi na 100 kW kuma yankin kudin elektrisiti na kasuwanci ta $0.12/kWh, kudin elektrisiti na shekara shine $72,000. Idan wani model na VFD yasa 25% na ƙarfi, wannan shine $18,000 a shekara. Idan VFD ya biyo $8,000 kafin kuma, wani biyo mai yawa yana daga baya a less than six months. A shekaru hudu, kuma kudin da aka sanya shine yanzu yake da $80,000. A yankin da suka yi amfani da kudin elektrisiti mai ƙarfi—kamar yankin Europe ($0.20‑0.30/kWh) ko Japan—kudin da aka sanya shine yanzu yake da kari. Don al'amari da suka gudanar da a cikin tsoho na uku, VFD ba zai iya gudanar da ba; shi ne wani abu da ke nuna kudin.

· Awat da suka gudanar da karami (≤8 awat/roko, roko daya, ko amfani na musim – Idan kuma kompresa na ku ya gudun 2,000 sa’at a shekara, kuma koyinsin elektrisitin da aka samu yana tsakanin kuma yana ƙaranci. Tsohon 25% daga $24,000 na shekaru yana $6,000—yana da matattasin kuma, amma lokacin da ke cikin wani abu da ke taimaka (payback period) na VFD yana zama 1.5 zuwa 2 shekara. Idan budjet na ku yana ƙarami ko idan kompresa yana a matsayin abu da ke taimaka (backup unit), kuma abu da ke aiki ta hanyar fuskantar (fixed-speed machine) zai zama azaman kuma da kyau. A duk kasashen, kuma wani mataimakon farko na faburka (older factories) suna da karamin kwayoyin transformer; abu da ke aiki ta hanyar fuskantar (fixed-speed direct-on-line starter) yana da karamin in-rush current don hanyar VFD’s soft-start (amintin VFDs na zaman kansu suka da kuma wani abu da ke taimaka a raba kuma). Don haka, sanya koyinsin elektrisitin na shekaru (kW × sa’at × load factor) kuma sanya da koyinsin na yankin ku. Sannan sanya da karamin 20% na tsoho (saving factor) ta hanyar karami. Kuma duba shi da farko na farin cikin abu (price difference)—wani bayani na ROI wanda ke ƙaranci yana nuna hanyar da ke cikin.

3. Duba Jihun Da Aiki Da Karamin Samun Abinci Na Aiki

Matsayin kuma da karamin magnet (Permanent magnet motors) suna da karamin teknoliji, amma suna da karamin wani abu: sensitiviti na ƙarfi. Magnetun da suka daga karama mai zuwa (wanda ke ƙarfi ne a cikin neodymium-iron-boron) suna da ƙarfi na yawa na isan gaba, wanda ke ƙarfi ne a cikin 150-180°C don ƙarfi na Curie na magnet, amma ƙarfin da aka yi amfani da shi a matsayin yanzu yana ƙarfi ne a cikin 120-130°C don hana demagnetization mai zahiri. Bayan demagnetization, motor ya kashe torque da efficiency ta hanyar tsoro, kuma sauya shi yana da kyau.

· Al'ummar da suka daga harsh, hot, ko kuma al'ummar da ba su da fassara – Idan gida na compressor din ku ƙaƙa, ba shi da duct na hawa mai sauƙi, ko yana cikin kari kafin furnace ko kiln, sauya na hawa na gida zai iya ci gaba daga 40‑45°C. Kuma idan aka jiya fan na cooling ta hanyar gaba, sauya na motor na gida zai iya ci gaba sosai wajen load mai sauƙi. A wannan halin, motor na induction na fixed‑speed (motor na AC mai sauƙi) yana da kyau sosai. Ba shi da magnet mai sauƙi, yana iya gudunawa sauya mai ƙarfi na winding, kuma class na insulation na shi (F ko H) ya dace sosai. Controller na shi yana fuskanci—ba shi da inverter board mai sauƙi, ba shi da capacitor na electrolytic wanda suka tsoro a lokacin sauya, kuma ba shi da high‑frequency switching noise. Tsarin sanya abu na gida yana koma zuwa sanya oil/filter mai sauƙi kuma tsehena na belt ko coupling. Abubuwan da suka cika yana da kari sosai kuma yana da harga mai sauƙi.

· Gida mai sauƙi, mai sauya mai ƙarfi, kuma da tsarin sanya abu mai sauƙi Akasin haka, idan kana da ɗakin kwampreso mai iska mai iska da yanayin zafin jiki na waje ƙasa da 35°C, iska mai kyau, da kuma tsabtace radiators a kai a kai, na'urar VFD za ta yi nasara. Yawancin masu matsawa na VFD na zamani suna zuwa tare da na'urorin firikwensin zafin jiki da kuma kariya mai zafi wanda ke rage gudu ko rufewa kafin a cire magnetization. Duk da haka, dole ne ka yi aiki tuƙuru: ka sa ruwan sanyaya ya kasance a fili, ka canja mai a kan lokaci, kuma ka riƙa lura da yanayin motarka ta wurin na'urar sarrafa iska. Bugu da ƙari, tsarin VFD yana da ƙarin kayan lantarki, don haka kuna buƙatar ƙwararrun masu fasaha don gyara matsalako yarjejeniyar sabis tare da mai ba da kaya. Ga masana'antun da ke da ƙwarewar kulawa, ƙarancin na'ura mai saurin gudu yana da amfani.

Ƙarshen Shari'a: Yin Daidaita Kayan Aiki da Gaskiyarka

Babu wani zaɓi mafi kyau ga kowa, kawai wanda ya dace da tsarin samar da kayan aikinku.

· Zaɓi na dindindin maganadisu VFD dunƙule kwampreso idan: bukatar iska ta bambanta sosai a kowane aiki ko yanayi; kayan aikinka suna aiki fiye da awa 16 a rana; farashin wutar lantarki ya fi $0.10/kWh; kuma ɗakin kwampreso yana da tsabta, sanyi, da iska mai kyau tare da ƙungiyar kulawa mai aminci. A irin wannan yanayi, tanadin makamashi zai fi saurin saka hannun jari na farko, kuma dawowar za ta kasance gajere da dadi.

· Zaɓi matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar matattarar tsarin samar da ku yana da kwanciyar hankali, tsinkaye na iska; lokacin aiki na yau da kullum bai kai sa'o'i 8-10 ba; kasafin ku na babban jari yana da iyaka; ko shafinku yana da sanyi mara kyau, yanayin ƙura, ko iyakance damar zuwa sabis na gyaran VFD na musamman. Na'urar da ke da saurin gudu tana ba da tabbaci mai ƙarfi, ƙananan farashi na farko, da sauƙin kulawasamar da sabis mai aminci ba tare da rikitarwa ba.

A ƙarshe, shawarar ba game da fasaha ba ne don fasaha. Yana da game da jimlar farashin kowane murabba'in mita na iska mai matsewa ta hanyar yadda mašin sarrafa ake amfani da ita. Yi lissafi, gano yadda kuke buƙata, kuma shirya ƙarfin ku. Mašin sarrafa da aka zaɓi ta yiwu ba tare da ƙarfi kuma ta sanya albarka. A matsayin haka, mašin da ba ta dace ba zai ƙara kudin ku ta hanyar ƙara ƙarfi, kuskuren da suka zuwa a lokacin da ba suka yi abin da suka yi ba, ko kuskuren da ba suka yi abin da suka yi ba. Ta hanyar amfani da waɗannan uku na muhimmi—yadda buƙatar ku ya ƙara ko yana ƙara, lokacin da aka amfani da ita da kudin ƙarfi, kuma al’ada da kuskure—zaku iya zaɓi da albarka da kudin ku da yawa wadanda zasu ci gaba daya.