Waya akwụ ụgwọ bụ otu ụzọ waya nwere mkpuchi mkpuchi nke nwere otu uru aha ya dị ka ike thermoelectromotive nke thermocouple dakọtara na oke okpomọkụ (0 ~ 100°C). Njehie n'ihi mgbanwe okpomọkụ na njikọ. Onye nchịkọta akụkọ na-esote ga-ewebata gị ihe akụrụngwa ụgwọ akwụ ụgwọ thermocouple bụ, kedu ihe ọrụ nke waya akwụ ụgwọ thermocouple bụ, yana nhazi ọkwa nke waya akwụ ụgwọ thermocouple.
1. Kedu ihe bụ waya akwụ ụgwọ thermocouple?
Waya akwụ ụgwọ n'ozuzu chọrọ ka electrodes dị mma na nke na-adịghị mma bụrụ otu ihe dị mma na nke na-adịghị mma nke thermocouple. K-ụdị thermocouples bụ nickel-cadmium (positive) na nickel-silicon (na-adịghị mma), ya mere, dị ka ọkọlọtọ, nickel-cadmium-nickel-silicon akwụ wires kwesịrị ịhọrọ.
2. Gịnị bụ ọrụ nke waya akwụ ụgwọ thermocouple
Ọ bụ ịgbatị electrode na-ekpo ọkụ, ya bụ, njedebe oyi nke mobile thermocouple, wee jikọọ na ihe ngosi iji mepụta usoro nha okpomọkụ. N'otu aka ahụ nakweere ọkọlọtọ mba nke IEC 584-3 "Thermocouple Part 3 - Waya akwụ ụgwọ". A na-eji ngwaahịa ndị a eme ihe n'ụdị dị iche iche nke okpomọkụ, ma ejiri ya mee ihe na ike nuklia, mmanụ ala, kemịkalụ, metallurgy, ọkụ eletrik na ngalaba ndị ọzọ.
3. Nhazi nke waya akwụ ụgwọ thermocouple
Na ụkpụrụ, a na-ekewa ya na ụdị ndọtị na ụdị ụgwọ. Ngwakọta kemịkalụ ọnụ nke waya alloy nke ụdị ndọtị ahụ bụ otu ihe ahụ nke thermocouple dakọtara, yabụ ikike ọkụ ọkụ dịkwa otu. A na-anọchi anya ya na "X" na ihe nlereanya ahụ, na ntinye aha kemịkalụ nke waya alloy nke ụdị akwụ ụgwọ bụ otu. Ọ dị iche na thermocouple dakọtara, ma n'ime oke okpomọkụ ya na-arụ ọrụ, ike ọkụ ọkụ ọkụ dị nso na ọnụ ahịa aha nke thermoelectric ike nke thermocouple dakọtara, nke "C" na-anọchi anya ya na ihe nlereanya ahụ.
A na-ekewa izi ezi nkwụghachi n'ọkwa nkịtị na ọkwa nke ziri ezi. Njehie mgbe akwụghachi ụgwọ nke ọkwa ziri ezi bụ naanị ọkara nke ọkwa nkịtị, nke a na-ejikarị n'ebe nwere oke nha nha chọrọ. Dịka ọmụmaatụ, maka waya nkwụghachi ụgwọ nke nọmba ngụsị akwụkwọ S na R, nnabata nke ọkwa ziri ezi bụ ± 2.5 ° C, na nnabata nke ọkwa nkịtị bụ ± 5.0 ° C; maka wires akwụ ụgwọ nke nọmba ngụsị akwụkwọ K na N, nnabata nke ọkwa ziri ezi bụ ± 1.5 ° C, nnabata nke ọkwa nkịtị bụ ± 2.5 ℃. N'ihe nlereanya ahụ, a naghị akara ọkwa nkịtị, a na-agbakwunyekwa ọkwa ziri ezi na "S".
Site na okpomọkụ na-arụ ọrụ, a na-ekewa ya na ojiji n'ozuzu ya na iji okpomọkụ na-eguzogide. Okpomọkụ na-arụ ọrụ nke ojiji n'ozuzu bụ 0 ~ 100 Celsius ( ole na ole bụ 0 ~ 70 Celsius C);
Ke adianade do, waya isi nwere ike kewara n'ime otu-strand na multi-isi ( soft waya) ugwo wires, na ike kewara n'ime ndị nkịtị na ọta ụgwọ wires dị ka ma ha nwere mkpuchi oyi akwa, na e nwekwara ụgwọ ọrụ wires maka. sekit enweghị nchebe nke a raara nye maka oge mgbawa na-egosi.