A kind of submerged arc furnace copper busbar device

Abstract

The invention discloses a submerged arc furnace copper busbar device which is composed of three annular copper busbar assembly sets. The three annular copper busbar assembly sets are arranged in an equilateral triangle shape, that is, the center points of the three annular copper busbar assembly sets form three vertexes of the equilateral triangle. Each annular copper busbar assembly set is composed of eight conductive unit groups. Each conductive unit group comprises connection sleeves, a left transverse copper pipe, a left combination connection sleeve, a right combination connection sleeve, a short copper pipe, four vertical copper pipes and a right transverse copper pipe. Due to the fact that the length of a copper busbar is readjusted, that is, the specific resistance is adjusted, the current distribution is made to be evener, and the accident rate that an electrode shell jumps from a slot is reduced. Due to the fact that no other accessory is added, and the copper pipes are fixedly connected with the connection sleeves, the fault points are less, and reliability is high. According to the submerged arc furnace copper busbar device, a bus busbar is saved, the cost is reduced, and meanwhile power consumption is lowered. The copper pipes are arranged with accurate specific resistance calculation as the benchmark, so that arrangement is compact and the material cost is low.

Description

technical field [0001] The invention relates to the field of smelting machinery and equipment, and mainly relates to a large combined gripper type submerged arc furnace, in particular to a copper bus bar device for a submerged arc furnace. Background technique [0002] The short network refers to the general term for the secondary busbar from the secondary terminal of the transformer to the electrode. The short network of the electric furnace is composed of three parts: copper tube group, flexible cable and copper busbar. It is a bridge to transmit low voltage and high current electric energy. When the power of the submerged arc furnace is not very high, relatively speaking, the strong current effect is not very obvious, but with the emergence of high-power electric furnaces, there is a problem that the current density on the rib plate of the electrode shell is too high, which causes the electrode shell to fall off the groove. [0003] Due to the limited existing space, it...

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Problems solved by technology

[0004] Chinese patent ZL201320013866.7 discloses a "conductive system of submerged arc furnace combined holder". This patent technology mainly describes the busbar in front of the copper busbar, and the current is distributed by adding the busbar. Since the copper tube is mostly a space curve structure, and can move up and down, so the installation of the busbar is very difficult. Once the contact is not good, it is easy to spark and cause damage to the copper pipe

Even if special measures are taken to ensure a good connection, due to the different resistance behind the busbar, there will still be excessive electric density

[0005] Chinese patent ZL200820237687.0 discloses a "short grid". This technology mainly describes the first part of the short grid, that is, the device before the current enters the copper bus. , which increases the probability of ignition and reduces the reliability of the equipment

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