Electrode holding and weighing device for submerged arc furnace

Abstract

The utility model discloses a submerged arc furnace electrode holding weighing device, which relates to the technical field of submerged arc furnaces, and comprises a submerged arc furnace body, an electrode, a driving mechanism for driving the electrode to move longitudinally, a supporting platform, a lifting platform and a weighing sensor, the supporting platform is positioned above the submerged arc furnace body, and through holes are symmetrically formed in the left side and the right side of the supporting platform; the two driving mechanisms penetrate through the through holes respectively, the output ends at the bottom are fixedly connected with the top end of the lifting platform, supporting rings are arranged at the tops of the two driving mechanisms, the weighing sensors are arranged between the supporting rings and the supporting platform, and the electrodes are arranged at the bottom end of the fixing plate; the lifting platform is driven by the electrode lifting oil cylinder to move, so that the height of the electrode is adjusted, an operator can remotely master the gravity change of an electrode part and data in the lifting process due to the arrangement of the weighing sensor, the position and the state of the electrode are accurately monitored, and the working efficiency is improved. And further, the charging length of the electrode is accurately judged and controlled.

Description

A weighing device for holding electrodes in a submerged arc furnace Technical Field

[0001] This utility model relates to the field of submerged arc furnace technology, specifically to a submerged arc furnace electrode holding and weighing device. Background Technology

[0002] In electric arc furnace (EAF) production, the electrode insertion length is of great significance, mainly in the following aspects: First, the electrode insertion length directly affects the power distribution and temperature field within the furnace. A suitable insertion length allows for more efficient transfer of electrical energy to the charge, promoting chemical reactions and thus improving production efficiency and product quality. Second, the electrode insertion length relates to the stability of the electric arc within the furnace. Insufficient or excessively short electrode insertion lengths can lead to arc instability, resulting in short circuits, arc interruptions, and other phenomena, affecting the normal operation of the furnace, increasing energy consumption, and reducing equipment lifespan. Third, the electrode insertion length significantly impacts the melting and reduction processes of the charge. A suitable length ensures that the charge is fully heated, melts and reduces uniformly, contributing to improved ore reduction and recovery rates.

[0003] Furthermore, a reasonable electrode insertion length in the furnace is beneficial for controlling the temperature and pressure inside the furnace. It can optimize the flow and emission of gases inside the furnace, reduce the generation and emission of harmful gases, and protect the environment.

[0004] In summary, accurately controlling the electrode entry length is one of the key factors to ensure stable, efficient and high-quality production of the submerged arc furnace. However, operators rely on experience to judge the position of the graphite electrode descent, which can lead to certain misjudgments. Therefore, in order to accurately judge the electrode entry length, it is urgent to design a submerged arc furnace electrode holding and weighing device. Summary of the Invention

[0005] The purpose of this invention is to provide an electrode holding and weighing device for a submerged arc furnace, which aims to solve the problem in the background art of not being able to accurately judge and control the length of the electrode entering the furnace.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a submerged arc furnace electrode holding and weighing device, comprising a submerged arc furnace body, an electrode, and a drive mechanism for driving the electrode to move longitudinally, and further comprising a support platform, a lifting platform, and a weighing sensor. The support platform is located above the submerged arc furnace body, and through holes are symmetrically opened on the left and right sides of the support platform. The drive mechanism is provided in two sets, and the two sets of drive mechanisms pass through the through holes on the left and right sides of the support platform respectively. The output ends of the two sets of drive mechanisms at the bottom are fixedly connected to the top of the fixed plate. A support ring is fixedly installed on the top of the two sets of drive mechanisms. The weighing sensor is located between the support ring and the support platform. The electrode is fixedly installed at the bottom of the lifting platform.

[0007] Furthermore, the driving mechanism is an electrode lifting cylinder, with two sets of electrode lifting cylinders passing through the through holes on the left and right sides of the support platform, and the piston rod ends of the two sets of electrode lifting cylinders being fixedly connected to the top of the electrode holder.

[0008] Furthermore, the electrode is provided with an electrode holder.

[0009] Furthermore, the weighing sensor is a ring-shaped weighing sensor, which is disposed around the through hole and in contact with the bottom surface of the support ring.

[0010] Furthermore, a furnace cover is provided at the top of the submerged arc furnace body, and a laser rangefinder is provided at the bottom of the lifting platform for measuring the distance between the lifting platform and the furnace cover.

[0011] This utility model has the following beneficial effects:

[0012] This invention provides a weighing device for holding electrodes in a submerged arc furnace. It utilizes an electrode lifting cylinder to move a lifting platform, thereby adjusting the height of the electrode body. During the electrode lifting and weighing process, the electrode position and status can be accurately monitored at any time, eliminating the need for regular maintenance and replacement of the lifting mechanism, saving time and effort. Furthermore, the installation of a weighing sensor allows operators to remotely monitor changes in the weight of the electrode components and data during the lifting process, enabling timely adjustments to the electrode insertion length into the furnace. This precise monitoring of the electrode position and status significantly improves efficiency and safety. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 is a cross-sectional view of the connection between the support platform and the electrode lifting cylinder of this utility model.

[0015] In the diagram: 1. Submerged arc furnace body; 2. Electrode; 3. Support platform; 4. Lifting platform; 5. Weighing sensor; 6. Through hole; 7. Support ring; 8. Electrode lifting cylinder; 9. Electrode holder; 10. Laser rangefinder. Detailed Implementation

[0016] As shown in Figures 1 and 2, a submerged arc furnace electrode holding and weighing device includes a submerged arc furnace body 1, an electrode 2, and a drive mechanism for driving the electrode to move longitudinally. It also includes a support platform 3, a lifting platform 4, and a weighing sensor 5. The electrode 2 is fixedly installed on the lifting platform 4. The support platform 3 is located above the submerged arc furnace body 1. Through holes 6 are symmetrically opened on the left and right sides of the support platform 3. The drive mechanism has two sets, and the two sets of drive mechanisms pass through the through holes 6 on the left and right sides of the support platform 3 respectively. The output ends of the two sets of drive mechanisms at the bottom are fixedly connected to the top of the lifting platform 4. A support ring 7 is fixedly installed on the top of the two sets of drive mechanisms. The weighing sensor 5 is located between the support ring 7 and the support platform 3. The weighing sensor 5 is a ring weighing sensor. The weighing sensor 5 is located around the through hole and contacts the bottom surface of the support ring. The electrode 2 is located at the bottom of the lifting platform 4, and an electrode holder 9 is provided on the electrode 2. The electrode holder 9 is used to clamp the electrode 2 to prevent the electrode 2 from loosening. The ring weighing sensor is easy to install with the support ring 7, which enhances the technical rationality.

[0017] The external information receiving device works in conjunction with the weighing sensor 5. During use, the weighing sensor 5 can monitor and record the dynamic changes in the weight of the electrode throughout the entire working process, and automatically calculate the weight and length consumed by the electrode 2. The weighing sensor 5 sends a signal to the external information receiving device, which can then control the two sets of drive mechanisms to extend and retract synchronously, thereby achieving the purpose of precisely adjusting the length of the electrode entering the furnace.

[0018] The driving mechanism is an electrode lifting cylinder 8. Two sets of electrode lifting cylinders 8 pass through the through holes 6 on the left and right sides of the support platform 3 respectively, and the piston rod ends of the two sets of electrode lifting cylinders 8 are fixedly connected to the top of the lifting platform 4; the diameter of the through hole 6 is slightly larger than the outer diameter of the electrode lifting cylinder 8.

[0019] The specific operation process of this utility model is as follows:

[0020] The electrode holder 9 is connected to the hydraulic system, enabling it to clamp the electrode and ensure that the electrode does not loosen or shift during use. An electrode guide mechanism is set at the bottom of the support platform 3. The electrode 2 on the lifting platform 4 moves up and down along the electrode guide mechanism under the drive of the drive mechanism. A furnace cover is set at the top of the submerged arc furnace body 1. A laser rangefinder 10 is set at the bottom of the lifting platform 4 to measure the distance between the lifting platform 4 and the furnace cover. First, the value of the weighing sensor 5 when the electrode 2 is unloaded is measured in advance. Then, the value of the weighing sensor 5 is measured after the electrode 2 is loaded. Given the density and cross-sectional area of ​​the electrode 2, the total length L1 of the electrode 2 at this time can be indirectly calculated from the change in its weight. The length L2 of the electrode 2 located on the top of the furnace cover is obtained by measuring the laser rangefinder 10. The length of the electrode entering the furnace can be calculated by subtracting L2 from L1, which can guide production and greatly improve the accuracy of the length of the electrode entering the furnace.

Claims

1. A weighing device for holding electrodes in a submerged arc furnace, comprising a submerged arc furnace body (1), electrodes (2), and a driving mechanism for driving the electrodes to move longitudinally, characterized in that, It also includes a support platform (3), a lifting platform (4) and a weighing sensor (5). The support platform (3) is located above the electric arc furnace body (1). The support platform (3) has symmetrical through holes (6) on its left and right sides. The drive mechanism has two sets, and the two sets of drive mechanisms pass through the through holes (6) on the left and right sides of the support platform (3) respectively. The output ends of the two sets of drive mechanisms at the bottom are fixedly connected to the top of the lifting platform (4). The top of the two sets of drive mechanisms is fixedly installed with a support ring (7). The weighing sensor (5) is located between the support ring (7) and the support platform (3). The electrode (2) is fixedly installed at the bottom of the lifting platform (4).

2. The electrode-holding weighing device according to claim 1, characterized in that, The driving mechanism is an electrode lifting cylinder (8). The two sets of electrode lifting cylinders (8) pass through the through holes (6) on the left and right sides of the support platform (3) respectively, and the piston rod ends of the two sets of electrode lifting cylinders (8) are fixedly connected to the top of the electrode lifting platform (4).

3. The electrode-holding weighing device according to claim 1, characterized in that, The electrode (2) is provided with an electrode holder (9).

4. The electrode-holding weighing device according to claim 1, characterized in that, The weighing sensor (5) is a ring-shaped weighing sensor, which is located around the through hole (6) and in contact with the bottom surface of the support ring (7).

5. The electrode-holding weighing device according to claim 1, characterized in that, The top of the electric arc furnace body (1) is provided with a furnace cover, and the bottom of the lifting platform (4) is provided with a laser rangefinder (10) for measuring the distance between the lifting platform (4) and the furnace cover.

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