A LF furnace conductive cross arm anti-deviation device
Patent Information
- Application Number
- CN202522612735.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-12-09
AI Technical Summary
如果连续生产，岗位人员不及时确认，会导致电极与耐火炉盖发生干涩，导致LF炉无法正常生产，生产线停产
通过挡板限位结构，限制电极横臂相对升降立柱的位移，减少电极横臂人工调整频率，避免电极与耐火炉盖产生干涉；同时降低由于调整电极横臂而对生产线产生的影响，提高设备使用效率，为冶炼生产线的连续性生产提供可靠的设备保障；此外，还能减少电极由于刮碰炉盖产生折断的风险，直接为企业产生经济效益。
Smart Images
Figure CN224901369U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of LF furnace technology, and in particular to an anti-deviation device for the conductive cross arm of an LF furnace. Background Technology
[0002] The current LF furnace consists of electrode crossarms, three-phase electrodes, and lifting columns. During the refining process, the three-phase electrodes are subjected to repulsive forces, causing the electrode crossarms to vibrate. Affected by these repulsive forces and vibrations, the electrode crossarms shift relative to the lifting columns, resulting in a smaller gap between the three-phase electrodes and the refractory furnace cover openings. This issue can only be addressed by frequent adjustments of the electrode crossarms by maintenance personnel after furnace shutdown, increasing the workload for maintenance workers. If production continues and personnel fail to promptly address this, the electrodes may become stuck to the refractory furnace cover, preventing normal LF furnace production and causing the production line to shut down. Utility Model Content
[0003] In view of this, the present invention provides a device for preventing deviation of the conductive cross arm of an LF furnace.
[0004] Therefore, the present invention provides the following technical solution: An anti-deviation device for the conductive cross arm of an LF furnace is provided, applicable to an LF furnace equipped with a water-cooled furnace cover, a refractory furnace cover, and three-phase electrodes. The refractory furnace cover has a circular hole, and the three-phase electrodes are arranged at the circular hole, with a gap between the three-phase electrodes and the inner wall of the circular hole. The LF furnace also includes an electrode cross arm and an electrode lifting column. The anti-deviation device includes a baffle plate, which is fixedly installed above the electrode lifting column and symmetrically distributed on both sides of the electrode cross arm, maintaining relative parallelity with the electrode cross arm. A gap exists between the baffle plate and the electrode cross arm.
[0005] Furthermore, the three-phase electrodes are evenly distributed at 120-degree angles at the circular holes of the refractory furnace cover.
[0006] Furthermore, the baffle is a plate-shaped structure, and the four baffles are divided into two groups of two. The two groups of baffles are arranged opposite each other on both sides of the electrode cross arm and welded to the top of the electrode lifting column.
[0007] Furthermore, each of the baffles has an insulating bakelite bolted to the side facing the electrode cross arm.
[0008] Furthermore, the gap between the baffle and the electrode cross arm is not less than 30mm, and the thickness of the insulating bakelite is not less than 20mm.
[0009] Advantages and positive effects of this utility model: By using a baffle limiting structure, the displacement of the electrode cross arm relative to the lifting column is restricted, reducing the frequency of manual adjustment of the electrode cross arm and avoiding interference between the electrode and the refractory furnace cover. At the same time, it reduces the impact on the production line caused by adjusting the electrode cross arm, improves equipment utilization efficiency, and provides reliable equipment support for the continuous production of the smelting production line. In addition, it can also reduce the risk of the electrode breaking due to scraping against the furnace cover, directly generating economic benefits for the enterprise.
[0010] The symmetrical limiting effect of the baffle maintains the stability of the electrode cross arm, reducing the frequency of adjusting the electrode cross arm and alleviating the labor intensity of maintenance workers, thus reducing the company's labor costs. In conjunction with the isolation and protection of the insulated bakelite, it can also avoid the grounding hazard caused by direct contact between the electrode cross arm and the lifting column, further improving the safety and stability of equipment operation. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 This is a schematic diagram of the main structure of an anti-deviation device for the conductive cross arm of an LF furnace provided by this utility model.
[0013] Figure 2 This is a top view of the anti-deviation device for the conductive crossarm of an LF furnace provided by this utility model.
[0014] Figure 3 A schematic diagram of the structure of the refractory furnace cover and the three-phase motor of the LF furnace conductive cross arm anti-deviation device provided by this utility model.
[0015] In the diagram: 1. Baffle; 2. Insulating bakelite; 3. Bolt; 4. Electrode cross arm; 5. Three-phase electrode; 6. Refractory furnace cover; 7. Water-cooled furnace cover; 8. Electrode lifting column. Detailed Implementation
[0016] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0017] This utility model provides a device for preventing deviation of the conductive cross arm of an LF furnace, such as... Figures 1-3 As shown, the LF furnace is equipped with a water-cooled furnace cover 7, a refractory furnace cover 6, and three-phase electrodes 5. The refractory furnace cover 6 has a circular hole, and the three-phase electrodes 5 are arranged at the circular hole, with a gap between the three-phase electrodes 5 and the inner wall of the circular hole. The LF furnace also includes an electrode cross arm 4 and an electrode lifting column 8. The electrode lifting column 8 is a conventional supporting component of the LF furnace, and its structure and driving method (such as hydraulic drive or mechanical drive) are well-known technologies in this field.
[0018] The anti-deviation device includes baffles 1, which are welded and fixedly installed above the electrode lifting column 8 and symmetrically distributed on both sides of the electrode horizontal arm 4, maintaining relative parallelity with the electrode horizontal arm 4. The baffles 1 are plate-shaped structures, with four baffles 1 divided into two groups of two, and the two groups of baffles 1 are arranged opposite each other on both sides of the electrode horizontal arm 4. There is a gap between the baffles 1 and the electrode horizontal arm 4.
[0019] Each baffle 1 has an insulating bakelite 2 mounted on the side facing the electrode cross arm 4 via bolts 3.
[0020] The gap between the baffle 1 and the electrode cross arm 4 shall not be less than 30mm, and the thickness of the insulating bakelite shall not be less than 20mm.
[0021] The three-phase electrodes 5 are evenly distributed at 120-degree angles at the round holes of the refractory furnace cover 6.
[0022] Working Principle: During the LF furnace refining process, the three-phase electrodes 5 are evenly distributed at 120-degree angles within the circular holes of the refractory furnace cover 6. The repulsive force and smelting vibration generated by the three-phase electrodes 5 during operation will cause the electrode cross arm 4 to tend to deviate relative to the electrode lifting column 8. At this time, the baffles 1 on both sides of the electrode cross arm 4 will form a rigid limit through the insulating bakelite 2: when the electrode cross arm 4 deviates to one side, it will contact the insulating bakelite 2 on the corresponding side baffle 1. The fixed support of the baffle 1 will prevent the electrode cross arm 4 from continuing to deviate, thereby limiting the horizontal displacement of the electrode cross arm 4 and preventing the gap between the three-phase electrodes 5 and the inner wall of the circular holes of the refractory furnace cover 6 from becoming smaller due to the deviation of the electrode cross arm 4, thus eliminating the possibility of interference between the three-phase electrodes 5 and the refractory furnace cover. At the same time, the gap of not less than 30mm reserved between the baffle 1 and the electrode cross arm 4 can ensure that the electrode cross arm 4 rises and falls normally with the lifting column 8.
[0023] Each baffle 1 has an insulating bakelite 2 installed on the side facing the electrode cross arm 4 by bolts 3. The insulating bakelite 2 is located between the baffle 1 and the electrode cross arm 4, which can block the current path between the electrode cross arm and the baffle 1 and the lifting column 8, prevent grounding faults caused by direct contact between the electrode cross arm 4 and the baffle 1, and ensure the safety and stability of the equipment operation.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. An anti-deviation device for the conductive cross arm of an LF furnace, applied to an LF furnace equipped with a water-cooled furnace cover (7), a refractory furnace cover (6), and three-phase electrodes (5), wherein the refractory furnace cover (6) has a circular hole, the three-phase electrodes (5) are arranged at the circular hole, and there is a gap between the three-phase electrodes (5) and the inner wall of the circular hole; the LF furnace further includes an electrode cross arm (4) and an electrode lifting column (8), characterized in that, The anti-deviation device includes a baffle (1), which is fixedly installed above the electrode lifting column (8) and symmetrically distributed on both sides of the electrode horizontal arm (4) and is relatively parallel to the electrode horizontal arm (4). There is a gap between the baffle (1) and the electrode horizontal arm (4).
2. The anti-deviation device for the conductive crossarm of an LF furnace according to claim 1, characterized in that, The three-phase electrodes (5) are evenly distributed at 120 degrees at the circular holes of the refractory furnace cover (6).
3. The anti-deviation device for the conductive crossarm of an LF furnace according to claim 1, characterized in that, The baffle (1) is a plate-shaped structure. The four baffles (1) are divided into two groups of two. The two groups of baffles (1) are arranged opposite each other on both sides of the electrode cross arm (4) and welded to the top of the electrode lifting column (8).
4. The anti-deviation device for the conductive crossarm of an LF furnace according to claim 1, characterized in that, Each of the baffles (1) has an insulating bakelite (2) mounted on the side facing the electrode cross arm (4) by bolts (3).
5. The anti-deviation device for the conductive crossarm of an LF furnace according to claim 1, characterized in that, The gap between the baffle (1) and the electrode cross arm (4) is not less than 30 mm, and the thickness of the insulating bakelite is not less than 20 mm.