Electrode clamping device of multi-electrode electric arc furnace

Abstract

The utility model provides an electrode clamping device of a multi-electrode electric arc furnace, which comprises a base part and a clamping arm, the clamping arm is connected with the base part, the base part supports the clamping arm and drives the clamping arm to move up and down, the clamping arm is provided with an arm head, the arm head is arranged at the end part of the clamping arm, and the arm head comprises a box body, independent regulators are arranged in the box body and correspond to the electrodes in number, the lower portion of each independent regulator is connected with a transition part, the electrodes are connected through the transition parts, movement of a single electrode is regulated through the independent regulators, and on the basis that the clamping arms drive the multiple electrodes to move synchronously, each electrode is provided with one independent regulator. According to the furnace charge melting condition, the operation state of a single electrode is finely adjusted through an independent regulator, and electrode abrasion is reduced.

Description

Technical Field

[0001] The utility model relates to the field of metallurgical equipment, in particular to an electrode clamping device for a multi-electrode arc furnace. Background Art

[0002] Traditional arc furnaces use three electrodes for metal smelting, and the heating is achieved through the high temperature generated by the arc. In the prior art, usually the three electrodes move synchronously. However, due to factors such as uneven distribution of materials in the furnace, smelting of various alloys or processing of different batches of furnace charges, the melting speed of the furnace charges at each electrode is different. If multiple electrodes always maintain synchronous movement, this is obviously unreasonable and likely to cause excessive wear of the electrodes.

[0003] In view of the above problems, the utility model provides an electrode clamping device for a multi-electrode arc furnace, which precisely controls the movement of each electrode according to the melting condition of the furnace charge to reduce electrode wear. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an electrode clamping device for a multi-electrode arc furnace to solve the defects in the above technology. On the basis that the clamping arm drives the multi-electrodes to move synchronously, each electrode is equipped with an independent regulator, and according to the melting condition of the furnace charge, the operation state of a single electrode is finely adjusted through the independent regulator to reduce electrode wear.

[0005] The purpose of the utility model is realized as follows: it includes a base part and a clamping arm. The clamping arm is connected to the base part, and the base part supports the clamping arm and drives it to move up and down. The clamping arm is provided with an arm head, which is arranged at the end of the clamping arm. The arm head includes a box body, and independent regulators corresponding to the number of electrodes are arranged inside the box body. A transition component is connected to the lower part of each independent regulator, and the electrode is connected through the transition component. The movement of a single electrode is adjusted through the independent regulator.

[0006] In the above structure, the independent regulator is a hydraulic cylinder, and the stroke of a single electrode is adjusted through the hydraulic cylinder;

[0007] Furthermore, each hydraulic cylinder is equipped with a pressure sensor to monitor the working pressure of the hydraulic cylinder through the pressure sensor, and the working state of the electrode is judged through the working pressure of the hydraulic cylinder.

[0008] In the above structure, the pressure sensor is connected to a control module, and the control module adjusts the working current and voltage of the electrode according to the pressure data detected by the pressure sensor.

[0009] In the above structure, a heat insulation layer is provided on the inner wall of the box body to reduce the influence of heat on the internal components of the box body.

[0010] In the above structure, a water-cooling pipeline is arranged around the inside of the heat insulation layer, and the water-cooling pipeline wraps the independent regulator inside it.

[0011] In the above structure, the base part includes a slewing mechanism and a lifting column. The slewing mechanism is fixedly arranged, and its upper part is connected to the lifting column. A pull rod is arranged at the top of the lifting column, and the pull rod is connected to the arm head through a wire rope.

[0012] The beneficial effects of the present utility model are as follows: Independent regulators are provided in the box body of the arm head corresponding to the number of electrodes. According to the working state of the electrodes, on the basis of synchronous movement, the movement states of each electrode are independently and finely adjusted. It can better cope with the problem that the melting speed of the materials at each electrode is different due to factors such as uneven distribution of materials in the furnace, smelting of multiple alloys, or processing of different batches of furnace charges. If the multi-electrodes move completely synchronously, it will cause excessive wear of individual electrodes. By obtaining the electrode operation resistance data through the independent regulator, and then dynamically adjusting the current and voltage data of each electrode through the control module, so as to adjust the output power of the electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic three-dimensional structure diagram of the electrode clamping device of the present utility model;

[0014] Figure 2 is a schematic diagram of the internal structure of the arm head of the present utility model Figure 1 ;

[0015] Figure 3 is a schematic diagram of the internal structure of the arm head of the present utility model Figure 2 . DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present application provides an electrode clamping device for a multi-electrode arc furnace. Independent regulators are provided in the box body of the arm head corresponding to the number of electrodes. According to the working state of the electrodes, on the basis of synchronous movement, the movement states of each electrode are independently and finely adjusted. It solves the problem in the prior art that when multiple electrodes operate completely synchronously, and factors such as uneven distribution of materials in the furnace, smelting of multiple alloys, or processing of different batches of furnace charges occur, the melting speed of the materials at each electrode is different. If the multi-electrodes move completely synchronously, it will cause excessive wear of individual electrodes.

[0017] The following further describes the present embodiment with reference to the accompanying drawings:

[0018] By Figure 1 — Figure 3It can be seen that the present application includes a base part and a clamping arm 1. The clamping arm 1 is connected to the base part. The base part supports the clamping arm 1 and drives it to move up and down. The clamping arm 1 is provided with an arm head 2, and the arm head 2 is arranged at the end of the clamping arm 1. In this embodiment, the base part includes a slewing mechanism 4 and a lifting column 5. The slewing mechanism 4 is fixedly arranged, and its upper part is connected to the lifting column 5. A pull rod 510 is provided at the top of the lifting column 5. The pull rod 510 is connected to the arm head 2 through a wire 520 to enhance the connection strength of the arm head 2. Among them, the slewing mechanism 4 drives the lifting column 5 to rotate, so as to adjust the position of the electrode. The clamping arm 1 is driven to move up and down by the lifting column 5, so as to drive the electrode 3 to move.

[0019] Specifically, the arm head 2 includes a box body 210. Inside the box body 210, independent regulators 220 are provided corresponding to the number of electrodes 3. Each independent regulator 220 is connected to a transition part 230 at the lower part. The electrode is connected through the transition part 230. The movement of a single electrode 3 is adjusted by the independent regulator 220.

[0020] On the basis of the above embodiment, preferably, a specific embodiment of the independent regulator 220 is provided. The independent regulator 220 is a hydraulic cylinder. The stroke of a single electrode 3 is adjusted by the hydraulic cylinder. Each hydraulic cylinder is equipped with a pressure sensor 6. The working pressure of the hydraulic cylinder is monitored through the pressure sensor 6, and the working state of the electrode 3 is judged through the working pressure of the hydraulic cylinder. Specifically, that is, the downward resistance of the electrode 3 is calculated through the pressure of the hydraulic cylinder, and the control module judges whether the downward resistance is within the normal value range. If it is within the normal range, the hydraulic cylinder does not need to perform stroke compensation on the electrode 3; if the downward resistance exceeds the normal value range, it indicates that there may be factors at this electrode 3 that cause the melting speed to be slow. At this time, on the one hand, the hydraulic cylinder operates to perform motion compensation on the electrode 3 and slow down the downward speed of the electrode. On the other hand, the control module adjusts the working current and voltage of the electrode 3 according to the monitored pressure data, so as to improve the output efficiency, accelerate the metal melting speed at this electrode, and prevent excessive wear of the electrode.

[0021] On the basis of the above embodiment, preferably, a heat insulation layer 211 is provided on the inner wall of the box body 210 to reduce the influence of heat on the internal components of the box body 210. Inside the heat insulation layer 211, a water cooling pipeline 212 is provided in a surrounding manner, and the water cooling pipeline 212 wraps the independent regulator 220 inside it. The temperature inside the box body 210 is reduced through the heat insulation layer 211 and the water cooling pipeline 212, and the influence of the high temperature generated during the arc furnace melting process on the internal components of the arm head 2 is reduced.

[0022] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. An electrode clamping device for a multi-electrode electric arc furnace, characterized in that: It includes a base part and a clamping arm; the clamping arm is connected to the base part, the base part supports the clamping arm and drives it to move up and down; the clamping arm is provided with an arm head, and the arm head is arranged at the end of the clamping arm; The arm head includes a box body, and independent regulators are arranged inside the box body corresponding to the number of electrodes. A transition component is connected to the lower part of each independent regulator, and the electrodes are connected through the transition component. The movement of a single electrode is regulated by the independent regulator.

2. The electrode clamping device for a multi-electrode electric arc furnace according to claim 1, characterized in that: The independent regulator is a hydraulic cylinder, through which the stroke of a single electrode is adjusted; Each hydraulic cylinder is equipped with a pressure sensor, which monitors the working pressure of the hydraulic cylinder and determines the working state of the electrode through the working pressure of the hydraulic cylinder.

3. The electrode clamping device for a multi-electrode electric arc furnace according to claim 2, characterized in that: The pressure sensor is connected to the control module, and the control module adjusts the working current and voltage of the electrode according to the pressure data detected by the pressure sensor.

4. The electrode clamping device for a multi-electrode electric arc furnace according to claim 1, characterized in that: The inner wall of the box is provided with a thermal insulation layer, which reduces the influence of heat on the internal components of the box.

5. The electrode clamping device for a multi-electrode electric arc furnace according to claim 4, characterized in that: A water cooling pipeline is arranged around the interior of the thermal insulation layer, and the water cooling pipeline wraps the independent regulator inside.

6. The electrode clamping device for a multi-electrode electric arc furnace according to claim 1, characterized in that: The base part comprises a slewing mechanism and a lifting column. The slewing mechanism is fixedly arranged, and its upper part is connected to the lifting column. A pull rod is arranged on the top of the lifting column, and the pull rod is connected to the arm head through a pull wire.

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