Brief Introduction
Short network (bus systems), also known as high current line, refers to the general term of the carrier fluid from the secondary outlet terminal of the transformer to the electrode (including the electrode).
The strong current flowing through the conductor of the short network will certainly form a strong magnetic field around the conductor of the short network (copper busbar), and generate a large power loss in the conductor of the short network and the steel components around the conductor, causing heat generation.
Brief Introduction to Electric Arc Furnace Submerged Arc Furnace Short Network
Electric furnace is an important process equipment in the steel making industry. During smelting, it is required to transmit dozens of thousands of amperes or even hundreds of thousands of amperes of strong current to the furnace. Such large current is transmitted by the short network.
Short network (bus system), also known as high current line, refers to the general term of the carrier fluid from the secondary outlet terminal of the transformer to the electrode (including the electrode).
Composition of Short Network
Short-network components are divided into the following parts:
Compensator: connect the low voltage end of the furnace transformer with the fixed part of the short network
Bus bar: the longest fixed part of the short network, which may be rectangular copper bar or water-cooled copper tube.
Fixed connection base: used to connect water-cooled flexible cable from busbar to short network and transmit current
Water-cooled flexible cable: it is used to transfer the current from the fixed connection base to the movable connection base moving with the electrode holder.
Movable connection base: used to connect water-cooled flexible cable and electrode holder.
Conductor and lead structure of electrode holder.
Electrode Holder Collet: Used to transfer current from the electrode holder conductor to the electrode and prevent the electrode from falling off.
Electrode.
Features of Short Network
Electric Furnace Short Network has the Following Characteristics:
Large Current
The strong current flowing through the conductor of the short network (copper bus tubes) will certainly form a strong magnetic field around the conductor of the short network, and generate a large power loss in the conductor of the short network and the steel components around the conductor, causing heat generation.
Short Length
The length of the whole short network (copper busbars) shall not exceed 20m for large furnaces. Due to the large loss of the short network, its length, especially the length of water-cooled flexible cable, shall be shortened as much as possible during design, so as to minimize the loss of the short network.
Complex Structure
Different conductors in short network(water cooled bus tube) have different structures, shapes, number of parallel conductors and arrangement modes. Therefore, during the design of bus system, the influence of skin effect and proximity effect shall be taken into consideration, and the conductor section shall be selected according to the specified current density. Meanwhile, attention shall be paid to the reasonable configuration and optimal transposition of conductors, so as to minimize the effective inductance, balance the current of each conductor and make the phase parameters as close as possible.
Poor Working Environment
Water cooled high current bus conductor operates in harsh environment with high temperature and much conductive dust.
Technical Advantages
Practice has proved that the electrical parameters of the short network play a decisive role in the normal operation of the furnace.
The production rate of the furnace, the service life of the furnace lining, the power loss and the power factor depend on the selection of the electrical parameters of the short network to a large extent.
A reasonable water cooled high current bus design must ensure stable combustion of arc in the furnace, with minimum electric loss, high power factor and three-phase power balance. Resistance and reactance of the copper busbars must be reasonable minimum values. Three-phase impedance shall be balanced. Material use of short network structure shall be minimized, especially the consumption of nonferrous metals shall be minimized, maintenance shall be simple and operation shall be reliable.
Related Products
Customized metallurgical machinery and equipment range: Electric Arc Furnace, Submerged Arc Furnace, LF Refining Furnace, Vacuum Furnace, Induction Furnace, Dust Remove System, Water Treatment Equipment, etc. Providing the most advanced equipment integration services, metallurgical equipment can be customized according to different needs of customers, and production capacity can be adjusted according to customer requirements.
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The water-cooled furnace cover of the arc furnace adopts the tubular frame water-cooling furnace cover, and the water-cooled cover is designed as per two halves for the convenience of replacement and transportation.
Submerged Arc Furnace Pressure Ring
Submerged arc furnace pressure ring is used to monitor the change of air pressure in the furnace in real time, and adjust the air pressure automatically or manually according to the preset parameters to ensure the stability of air pressure in the furnace
The conductive arm of an electric arc furnace (EAF) is primarily composed of the front electrode conductive arm holder, a water-cooled clamping ring, the arm body, and the rear conductive copper plate.
Forged copper tile is one of the main accessories in submerged arc furnace (silicon metal furnace, calcium carbide furnace and iron alloy furnace). It generates heat energy due to passing through large current at high temperature, and is easy to be damaged due to poor working environment.
The electrode lifting mechanism of electric arc furnace is composed of conductive cross arm and electrode column device.
Furnace Cover Lifting and Rotating Device
The furnace cover lifting and rotating device consists of a furnace cover lifting mechanism, a rotating mechanism and a rotating frame.
There are many insulation links between the EAF electrode holder and the conductive cross arm body, which greatly simplifies the cconductive cross arm structure and is a new type of electrode arm on the ultra-high power arc furnace.
Our Completed Projects
Sanrui metallurgy furnace equipment integration services are submerged arc furnaces and electric arc furnaces. Sanrui metallurgy furnaces are manufactured using cutting-edge technology to ensure an efficient, high-quality melting process. These furnaces are capable of melting a variety of materials, including steel, iron and alloys, ferroalloys (such as ferrotungsten, high carbon ferromanganese, high carbon ferrosilicon, high carbon ferrochromium, ferronickel alloys) and industrial silicon, calcium carbide, corundum, yellow phosphorus, etc. with precise temperature control and minimal energy consumption. By using Sanrui metallurgy furnace equipments, metallurgical companies can increase productivity and reduce production costs, ultimately increasing profitability.
Sanrui is well experience in design, manufacturing, installation, commissioning of steelmaking furnace process equipment. Send us your project details inquiry and our team of engineers will design a metallurgical furnace equipment system solution from A to Z based on your needs.
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