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三、结构设计的两个问题抽头式轻便焊机在设计程序,基本参数的选取和计算、结构设计、以及铜耗、铁损、温升、效率等项指标的校核方面,与一般干式、自冷变压器有类似之处,勿需赘述。以下只针对这种焊机的特殊性着重讨论结构设计中的两个问题。 1.铁芯截面与基本匝数的确定将每伏匝数l/e_t=N_1/U_1代入变压器基本关系式即可求出变压器铁芯截面S_(Fe): S_(Fe)=45×10~4/(B_m·(l/e_t))(平方厘米) (10)
Third, the structural design of the two issues Tap-type portable welder in the design process, the basic parameters of the selection and calculation, structural design, and copper consumption, iron loss, temperature rise, efficiency and other indicators of the check, with the general dry Since the cold transformer has similarities, do not need to go into details. The following only focus on the particularity of this welding machine focuses on two issues in the structural design. 1. Core section and the basic number of turns to determine the number of turns per volt l / e_t = N_1 / U_1 Substitution into the transformer can be derived from the basic relationship between the core of the transformer S_ (Fe): S_ (Fe) = 45 × 10 ~ 4 / (B_m · (l / e_t)) (cm 2) (10)