公开(公告)号：US4122295A

公开(公告)日：1978-10-24

申请号：US756710

申请日：1977-01-04

Applicant: Toshio Nanjyo ,  Akinori Nakamura

Inventor： Toshio Nanjyo ,  Akinori Nakamura

IPC: F27B3/12 ,  F27D1/12 ,  F27D9/00 ,  H05B7/02

CPC classification number: H05B7/02 ,  F27B3/12 ,  F27D1/12 ,  F27D2009/004 ,  F27D2009/0062

Abstract: Disclosed is a furnace wall structure which is placed in opposed relation with electrodes of a electric arc furnace and is made of copper or copper alloy in order to ensure a long service life, improved safety and a minimum thermal loss and in which a front plate which defines a heat-receiving surface exposed within the furnace is cooled by the forced circulation of cooling water.

Abstract translation: 公开了一种炉壁结构，其与电弧炉的电极相对置并且由铜或铜合金制成，以确保长的使用寿命，改善的安全性和最小的热损失，并且其中前板 限定在炉内暴露的受热表面被冷却水的强制循环冷却。

公开(公告)号：US3952138A

公开(公告)日：1976-04-20

申请号：US515170

申请日：1974-10-16

Applicant: Toshio Nanjyo ,  Shozo Yasukawa

Inventor： Toshio Nanjyo ,  Shozo Yasukawa

IPC: G05F1/32 ,  H02J3/24 ,  H05B7/00 ,  H05B7/144

CPC classification number: H05B7/005

Abstract: A power control system is disclosed for an electric arc or refining furnace circuit to which is supplied power directly from an independent power generating unit or units installed independently of a publicly available power supply system or any other power generating unit. Depending upon the operating conditions of the furnace, the power supply is controlled by the suitable adjustment of the generator voltage or frequency or by the combination thereof based upon the relations V = K..PHI..n where V = generator voltage, K = constant, .PHI. = flux density and n = operating speed of a prime mover mechanically coupled to each generator, and f = p.n/60 where f = frequency, and p = number of poles in each generator.

Abstract translation: 公开了一种用于电弧或精炼炉电路的功率控制系统，其直接从独立的发电单元或独立于可公共供电系统或任何其它发电单元安装的单元供电。 根据炉的工作条件，电源由发电机电压或频率的适当调整或其组合基于V = K. PHI .n其中V =发电机电压，K =常数， PHI =磁通密度，n =机械耦合到每个发电机的原动机的运行速度，f = pn / 60，其中f =频率，p =每个发电机中的极数。

公开(公告)号：US4021603A

公开(公告)日：1977-05-03

申请号：US624766

申请日：1975-10-22

Applicant: Toshio Nanjyo ,  Masayuki Aoshika

Inventor： Toshio Nanjyo ,  Masayuki Aoshika

IPC: F27D1/18 ,  F27D1/12

CPC classification number: F27D1/1816

Abstract: A roof assembly for an arc furnace is disclosed in which a furnace roof ring and a plurality of roof units are assembled together to define a roof section frustoconical in cross section and with a roof top opening, and a roof top made of an electrically insulating refractory and provided with electrode holes closely fitted into the roof top opening. Each sectionalized roof unit comprises a main body cast from cast iron or copper, and a cooling coil embedded in the main body with end sections being extended out of the upper major upper surface of the main body so as to be used as a cooling water inlet and an outlet. In order to ensure the satisfactory high-temperature strength and thermal-shock resistance, the inner major surface of the main body directed toward the inside of the furnace is partially lined with the refractory or corrugated.

Abstract translation: 公开了一种用于电弧炉的屋顶组件，其中炉顶环和多个屋顶单元组装在一起以限定截面为截头圆锥形的顶部截面，并具有屋顶开口，以及由电绝缘耐火材料制成的顶板 并且设置有与屋顶开口紧密配合的电极孔。 每个分段式屋顶单元包括由铸铁或铜铸造的主体和嵌入主体中的冷却盘管，其端部从主体的上主上表面延伸出来，以便用作冷却水入口 和一个出口。 为了确保令人满意的高温强度和耐热冲击性，主体内部主要指向炉内的部分部分衬有耐火材料或波纹状。