Matambudziko akati wandei muSensor Dhizaini

Induction heat equipment inosanganisira induction kupisa chira, magetsi, kutonhora kwemvura uye michina yekurodha nekudzikisa zvinhu, nezvimwewo, asi chinangwa chikuru ndechekugadzira inductor ine kupisa kwakanyanya, kushandiswa kwesimba shoma uye kushandiswa kwenguva refu.

Iwo ma inductors anoshandiswa pakudziisa kupisa kwema blanks anonyanya kutenderera-kutenderera spiral inductors. Zvinoenderana nechimiro, saizi uye maitiro ezvinodiwa zveiyo isina chinhu, chimiro chechimiro cheinductor uye rudzi rwechoto chekupisa zvinosarudzwa. Yechipiri ndeyekusarudza yakakodzera ikozvino frequency uye kuona simba rinodiwa pakupisa kwechinhu chisina chinhu, icho chinosanganisira simba rinoshanda rinodiwa pakudziya kweiyo blank pachayo uye nekurasikirwa kwayo kwakasiyana-siyana.

Kana iyo isina chinhu ichidziya inductively, iyo simba uye simba density yekupinda pamusoro peiyo blank nekuda kweiyo induction inotemwa nezvinhu zvakasiyana. Musiyano wetembiricha pakati pepamusoro nepakati pechinhu chisina chinhu chinodiwa nekuita chinotarisa iyo yakanyanya kupisa nguva uye simba density yechinhu chisina chinhu muinductor, iyo inotaridzawo kureba kweiyo induction coil yekuteedzana uye inoenderera induction kupisa. Hurefu hweiyo induction coil inoshandiswa zvinoenderana nehurefu hweiyo isina chinhu.

In most cases, the terminal voltage of the inductor adopts a fixed voltage in design and actual use, and the voltage does not change during the whole process from the start of heating to the end of heating. Only in periodic induction heating, the voltage needs to be reduced when the blank heating needs to be uniform, or when the heating temperature exceeds the Curie point when the magnetic material is induction heated, the magnetism of the material disappears, and the heating rate is slowed down. In order to increase the heating rate And increase the terminal voltage of the inductor. In 24 hours a day, the voltage provided in the factory is fluctuating, and its range sometimes reaches 10% -15%. When using such a power supply voltage for power frequency induction heating, the heating temperature of the blank is very inconsistent in the same heating time. When the heating temperature requirements of the blank are relatively strict, a stable power supply voltage should be used. Therefore, a voltage stabilizing device needs to be added to the power supply system to ensure that the terminal voltage of the inductor fluctuates below 2%. It is very important to heat the workpiece by heating, otherwise the mechanical properties of the long workpiece will be inconsistent after heat treatment.

Iyo simba rekutonga panguva yekupisa yekupisa kweiyo isina chinhu inogona kukamurwa kuita maviri mafomu. Chimiro chekutanga chakavakirwa pamusimboti wekudzora nguva yekupisa. Zvinoenderana neyakagadzirwa takt nguva, iyo isina chinhu inotumirwa mune induction yekupisa choto chekudziya uye kusundira kunze kuti iwane chibereko chakagadziriswa. . Mukugadzirwa chaiko, iyo nguva yekudziya yekudzora inoshandiswa zvakanyanya, uye tembiricha yeisina chinhu inoyerwa kana mudziyo uchinge wagadziriswa, uye nguva yekudziya inodiwa kusvika kune yakatarwa yekudziya tembiricha uye mutsauko wekushisa pakati pepamusoro nepakati pechinhu chisina chinhu. inogona kutsanangurwa pasi peimwe voltage mamiriro. Iyi nzira yakanakira yekugadzira uye kutsika maitiro ane kugadzirwa kwakanyanya, izvo zvinogona kuve nechokwadi chekuenderera mberi kwekugadzira uye kutsika maitiro. Chimiro chechipiri ndechekudzora simba maererano nekushisa, izvo chaizvoizvo zvichibva pakupisa kwekupisa. Kana iyo isina chinhu ichisvika pane yakatarwa tembiricha yekudziya, inoburitswa nekukasira.

choto. Iyi nzira inoshandiswa kune ma blanks ane akasimba ekupedzisira kupisa tembiricha zvinodiwa, senge kupisa kuumbwa kweasina-ferrous simbi. Kazhinji, mukupisa kwekupinza kunodzorwa nekupisa, nhamba shoma chete yezvivharo inogona kupisa mune imwe inductor, nekuti kune akawanda ma blanks akadziya panguva imwe chete, uye tembiricha yekudziya inonetsa kudzora.

Kana simba rekupinza risina chinhu, nzvimbo inopisa uye simba repamusoro rinosangana nezvinodiwa zvekushandisa rinowanikwa, inductor inogona kugadzirwa uye kuverengwa. Chinokosha ndechekuona nhamba yekutendeuka kweiyo induction coil, kubva iyo ikozvino uye yemagetsi ekushanda kweinductor inogona kuverengwa. , Simba factor COS A uye muchinjika-chikamu saizi yeiyo induction coil conductor.

Dhizaini uye kuverenga kweiyo inductor kunonyanya kunetsa, uye kune zvakawanda zvekuverenga zvinhu. Nekuti mamwe fungidziro anoitwa muiyo derivation calculation formula, haienderane zvachose neiyo chaiyo induction yekudziya mamiriro, saka zvakanyanya kuoma kuverenga mhedzisiro chaiyo. . Dzimwe nguva kune kutendeuka kwakawandisa kweiyo induction coil, uye tembiricha yekushisa inodiwa haigone kusvika mukati menguva yakatarwa yekudziya; kana nhamba yekutendeuka kweiyo induction coil idiki, tembiricha yekudziya yakapfuura iyo inodiwa yekupisa tembiricha mukati menguva yakatarwa yekudziya. Kunyangwe tepi inogona kuchengetwa paiyo induction coil uye kugadzirisa kwakakodzera kunogona kuitwa, dzimwe nguva nekuda kwekumisikidzwa kwechimiro, kunyanya magetsi frequency inductor, hazvina kunaka kusiya pombi. Kune masensa akadaro asingasviki nezvinodiwa zvetekinoroji, anofanirwa kuputswa uye kugadziridzwa kuti agadzire zvitsva. Zvinoenderana nemakore edu ekudzidzira, mamwe empirical data uye machati anowanikwa, ayo asingangorerutsa dhizaini uye kuverenga maitiro, anochengetedza nguva yekuverenga, asi zvakare inopa yakavimbika mhinduro dzekuverenga.

Nheyo dzinoverengeka dzinofanirwa kutariswa mukugadzirwa kwe sensor inounzwa seinotevera.

1. Shandisa madhayagiramu kurerutsa masvomhu

Mimwe mibairo yekuverenga yakanyorwa muchati yekusarudza zvakananga, senge dhayamita isina chinhu, frequency yazvino, tembiricha yekudziya, kusiyana kwetembiricha pakati pepamusoro nepakati peiyo isina chinhu uye yekudziya nguva muTafura 3-15. Imwe empirical data inogona kushandiswa kuitisa uye nemwaranzi kupisa kupisa panguva yekupisa yekupinza kweiyo isina chinhu. Kurasikirwa kwekupisa kweiyo yakasimba cylindrical blank i10% -15% yesimba rinoshanda rekudziya kusina chinhu, uye kurasikirwa nekupisa kwegomba cylindrical blank ndiro simba rinoshanda rekudziya kusina chinhu. 15% -25%, kuverenga uku hakuzokanganisa kurongeka kwekuverenga.

2. Sarudza muganho wakaderera wezvino frequency

Kana iyo isina chinhu ichidziya, maviri azvino ma frequency anogona kusarudzwa kune imwechete dhayamita isina chinhu (ona Tafura 3-15). Iyo yakaderera ikozvino frequency inofanirwa kusarudzwa, nekuti iyo yazvino frequency yakakwira uye mutengo weiyo magetsi wakakwira.

3. Sarudza chiyero chemagetsi

Iyo terminal voltage yeinductor inosarudza iyo yakayerwa voltage kuti ishandise zvizere kugona kwesimba remagetsi, kunyanya mune yemagetsi frequency induction heat, kana iyo terminal voltage yeinductor yakadzikira pane yakayerwa voltage yemagetsi, nhamba ye capacitors inoshandiswa kuvandudza simba factor cos

4. Avhareji yekupisa simba uye midziyo yekuisa simba

Iyo blank inodziiswa inoramba ichienderera kana sequentially. Kana iyo terminal voltage inopihwa kune inductor iri “= nguva dzose, simba rinodyiwa neinductor rinoramba risina kuchinjwa. Kuverengerwa neavhareji simba, iyo yekuisa simba remidziyo inongoda kuve yakakura kupfuura avhareji simba. Iyo magineti isina chinhu inoshandiswa sekutenderera. Type induction heat, simba rinodyiwa neinductor rinoshanduka nenguva yekudziya, uye simba rekudziya pamberi peCurie point iri 1.5-2 nguva yeavhareji simba, saka simba rekuisa remidziyo rinofanira kunge rakakura kupfuura kupisa kusina chinhu pamberi peCurie. point. simba.

5. Dzora simba pane imwe nzvimbo

When the blank is induction heated, due to the requirements of the temperature difference between the surface and the center of the blank and the heating time, the power per unit area of ​​the blank is selected to be 0.2-0. 05kW/cm2o when designing the inductor.

6. Kusarudzwa kwe blank resistivity

When the blank adopts sequential and continuous induction heating, the heating temperature of the blank in the sensor changes continuously from low to high along the axial direction. When calculating the sensor, the resistance of the blank should be selected according to 100 ~ 200°C lower than the heating temperature. rate, the calculation result will be more accurate.

7. Kusarudzwa kwechikamu nhamba yemagetsi frequency sensor

Simba frequency inductors inogona kugadzirwa seimwe-chikamu, maviri-chikamu uye matatu-chikamu. Iyo single-phase simba frequency inductor ine zvirinani kupisa mhedzisiro, uye matatu-chikamu simba frequency inductor ine hombe yemagetsi simba, iyo dzimwe nguva inosundira iyo isina chinhu kunze kweinductor. Kana iyo single-phase simba frequency inductor ichida simba rakakura, matatu-chikamu chinoenzanisa chinoda kuwedzerwa kune magetsi emagetsi system kuti aenzanise kuremerwa kwetatu-chikamu magetsi. Iyo mitatu-chikamu simba frequency inductor inogona kubatanidzwa kune matatu-chikamu magetsi ekupa. Kuremerwa kwemagetsi matatu-chikamu chemagetsi hachikwanisi kuenzana zvachose, uye matatu-phase magetsi emagetsi pachayo anopiwa nefekitari workshop haana kufanana. Paunenge uchigadzira magetsi frequency inductor, imwe-chikamu kana nhatu-chikamu inofanirwa kusarudzwa zvichienderana nehukuru hweiyo isina chinhu, rudzi rwekupisa kupisa huni hunoshandiswa, mwero wekupisa kupisa uye saizi yekubudirira.

8. Kusarudzwa kwenzira yekuverenga sensor

Nekuda kwezvakasiyana zvimiro zvema inductors, iwo ma inductors anoshandiswa kune epakati frequency induction heat haana kugadzirwa nemagineti conductors (mahombe-akawanda epakati ma frequency induction kunyunguduka ma furnaces ane magineti conductors), nepo inductors yemagetsi frequency induction kupisa ane maginiti conductors, saka Mukugadzira uye kuverenga kweinductor, inofungidzirwa kuti inductor isina magnetic conductor inotora inductance calculation method, uye inductor ine magnetic conductor inotora magnetic circuit calculation method, uye mhedzisiro yekuverenga ndeyechokwadi. .

9. Shandisa zvizere mvura inotonhorera yeinductor kuchengetedza simba

Mvura inoshandiswa kutonhodza sensor ndeyekutonhodza chete uye haina kusvibiswa. Kazhinji, tembiricha yemvura inopinza iri pasi pe30Y, uye tembiricha yemvura yekubuda mushure mekutonhora ndeye 50Y. Parizvino, vagadziri vazhinji vanoshandisa mvura inotonhorera iri kutenderera. Kana tembiricha yemvura yakakwira, vanozowedzera tembiricha yekamuri yemvura kuderedza tembiricha yemvura, asi kupisa kwemvura inotonhorera hakushandiswi. Iyo magetsi frequency induction heat furnace yefekitori ine simba re700kW. Kana kushanda kweinductor kuri 70%, 210kW yekupisa ichatorwa nemvura, uye kushandiswa kwemvura kuchava 9t / h. Kuti ushandise zvizere mvura inopisa mushure mekutonhodza inductor, mvura inotonhora inopisa inogona kuunzwa mumusangano wekugadzira semvura yemumba. Sezvo induction inopisa choto chinoshanda nguva dzose mumashiti matatu pazuva, mvura inopisa inowanikwa kuti vanhu vashandise maawa makumi maviri nemana pazuva muimba yekugezera, iyo inoshandisa zvizere mvura inotonhorera uye simba rinopisa.