Water-cooling walking board of electric furnace cover lifting mechanism
By adding waterway passages and rounded corner structures to the water-cooled staircase of the electric furnace cover lifting mechanism, the poor cooling effect and water leakage of the water-cooled staircase are solved, achieving more efficient cooling effect and longer equipment service life.
Patent Information
- Application Number
- CN202420566601.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-03-22
AI Technical Summary
The water-cooled platform of the electric furnace cover lifting mechanism has too high return water temperature in high temperature environments, and the cooling effect is poor, resulting in frequent water leakage, burning of steel plates, shortening of service life, and high maintenance costs.
A water-cooled walkway for an electric furnace cover lifting mechanism is designed. By adding a water channel on the inner side of the baffle near the electrode side, the inlet water first enters along the hottest part, forming a serpentine water channel, improving the cooling effect, and adopting a rounded corner structure at the corners to reduce water leakage.
It effectively reduces the maximum temperature difference between inlet and return water, improves the water cooling effect, reduces water leakage, extends the service life of the equipment, reduces maintenance costs, and increases the efficient operating rate of electric furnace smelting.
Smart Images
Figure CN222783935U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to an auxiliary device for a steelmaking electric furnace, in particular to a water-cooled platform of a lifting mechanism for a furnace cover of an electric furnace. Background Art
[0002] During the electric furnace smelting process, according to the smelting process requirements and the needs of smelting steel grades, the furnace cover of the electric furnace is rotated to load the scrap steel and molten iron required for each furnace into the furnace. The electric arc furnace inputs electric energy into the electric arc furnace through the vertical movement of the graphite electrode, so that an arc is generated between the end of the electrode and the charge as a heat source for steelmaking. When the gas discharge forms an arc, the energy is concentrated, and the temperature of the arc zone is above 3000℃ to meet the needs of smelting various types of molten steel.
[0003] The electric furnace smelting method of using the furnace cover to rotate and load scrap steel and molten iron is currently the most reasonable electric furnace smelting production form. In the electric furnace smelting process, the water-cooled platform of the furnace cover lifting mechanism is very important. The higher the equipment operation rate within the effective time, the less time each furnace takes to smelt, the lower the production cost, and the economic benefits will naturally increase.
[0004] The furnace cover lifting mechanism of an electric furnace consists of a frame and multiple water-cooling units, among which the water-cooling platform is the most important water-cooling unit. Due to the addition of a furnace cover exhaust pipe in an electric furnace used in a steelmaking plant, the working environment of the water-cooling platform of the furnace cover lifting mechanism has changed greatly. The water-cooling platform frequently leaks at the corners (two places). Figure 1 , Figure 2 .
[0005] The water-cooled platform of the original design of the electric furnace cover lifting mechanism frequently encountered the following problems during use:
[0006] (1) In a high temperature environment, the water-cooled walkway of the electric furnace cover lifting mechanism often issues an alarm for excessive return water temperature, which exceeds the design range requirement of a maximum temperature difference of 10 to 15°C between the inlet and return water, making it impossible to carry out electric furnace smelting.
[0007] (2) The water-cooled walkway of the electric furnace cover lifting mechanism has poor cooling effect, which will form an air barrier in the inner cavity, causing cracks and water leakage in the steel plate under the alternating hot and cold conditions.
[0008] (3) The cooling effect of the water-cooled walkway of the electric furnace cover lifting mechanism is poor, the steel plate is severely burned, and the service life of the water-cooled walkway of the electric furnace cover lifting mechanism is shortened.
[0009] (4) Once there is a problem with the water-cooled platform of the electric furnace cover lifting mechanism, the processing time is long and the equipment maintenance cost is high. Summary of the invention
[0010] The utility model aims to provide a water-cooled platform for an electric furnace cover lifting mechanism, which can improve the cooling effect, reduce the occurrence of water leakage and increase the service life of the water-cooled platform for the furnace cover lifting mechanism.
[0011] To achieve the above purpose, the utility model is implemented through the following technical solutions:
[0012] A water-cooled walkway of an electric furnace cover lifting mechanism comprises a front panel, a rear panel and a baffle. The front panel and the rear panel have the same structure. The outer contours of the front panel and the rear panel are closed and fixedly connected by the baffle. A water channel rib plate is fixedly connected to the inner side of the baffle near the electrode side. One end of the water channel rib plate is fixedly connected to the baffle, and a gap is left between the other end and the baffle, so that a water channel is formed between the water channel rib plate and the baffle near the electrode side. The corners of the front panel and the rear panel near the electrode side are all chamfered structures.
[0013] A water inlet is provided on the front panel or the rear panel between one end of the water channel rib plate and the baffle plate close to the electrode side.
[0014] A water outlet is provided at the front panel or the rear panel above one end of the water channel rib plate.
[0015] The baffles close to the electrode side are rounded structures at the corners of the front panel and the rear panel close to the electrode side.
[0016] A plurality of ribs are longitudinally connected between the front panel and the rear panel, forming a serpentine water channel between the front panel and the rear panel.
[0017] The rib plates are arranged alternately with adjacent rib plates.
[0018] Compared with the prior art, the beneficial effects of the utility model are:
[0019] The water-cooled walkway of the electric furnace cover lifting mechanism has a simple structure, convenient maintenance and low cost. A water channel is added on the inner side of the baffle near the electrode side, so that the incoming water can first enter the water-cooled walkway along the hottest part, improving the water cooling effect, so that the maximum temperature difference between the incoming water and the return water is controlled within the design range of 10 to 15°C, extending the service life of the overall equipment. In addition, the corners of the water-cooled walkway near the electrode side are rounded to reduce structural welds and avoid frequent water leakage. While reducing the failure rate of the water-cooled walkway of the electric furnace cover lifting mechanism, the efficient operation rate of electric furnace smelting is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is the main view of the water-cooled walkway of the original electric furnace cover lifting mechanism.
[0021] Figure 2 This is a top view of the water-cooled walkway of the original electric furnace cover lifting mechanism.
[0022] Figure 3 It is the front view of the utility model.
[0023] Figure 4 It is a top view of the utility model.
[0024] Figure 5 It is a schematic diagram of the waterway of the utility model.
[0025] In the figure: 1-front panel 2-rear panel 3-baffle 4-leakage point 5-water channel rib plate 6-rib plate 7-water channel 8-rounded corner structure 9-water inlet 10-water outlet. DETAILED DESCRIPTION
[0026] The present invention is described in detail below in conjunction with the accompanying drawings of the specification, but it should be noted that the implementation of the present invention is not limited to the following embodiments.
[0027] See Figure 3 , Figure 4 A water-cooled walkway of an electric furnace cover lifting mechanism comprises a front panel 1, a rear panel 2 and a baffle 3. The front panel 1 has the same structure as the rear panel 2. The outer contours of the front panel 1 and the rear panel 2 are sealed and welded by the baffle 3. A waterway rib plate 5 is fixedly connected to the inner side of the baffle 3 near the electrode side. One end of the waterway rib plate 5 is fixedly connected to the baffle 3, and a gap is left between the other end and the baffle 3, so that a waterway channel 7 is formed between the waterway rib plate 5 and the baffle 3 near the electrode side; the corners of the front panel 1 and the rear panel 2 near the electrode side are both chamfered structures 8, and the corresponding baffle 3 is also a chamfered structure 8 at the corner near the electrode side, which ensures the water flow while preventing the occurrence of dead corners, which causes local overheating and vaporization of the water-cooled walkway and water leakage.
[0028] A plurality of ribs 6 are longitudinally connected between the front panel 1 and the rear panel 2, forming a serpentine waterway channel 7 between the front panel 1 and the rear panel 2. The ribs 6 are arranged alternately with adjacent ribs 6, that is, if one end of the rib 6 is fixedly connected to the baffle 3 close to the electrode side, a gap is left between the other end and the baffle 3 away from the electrode side; then one end of the rib 6 adjacent to the rib 6 is fixedly connected to the baffle 3 away from the electrode side, and a gap is left between the other end and the baffle 3 close to the electrode side. A water inlet 9 is provided on the front panel 1 or the rear panel 2 between one end of the waterway rib 5 and the baffle 3 close to the electrode side, and a water outlet 10 is provided on the front panel 1 or the rear panel 2 above one end of the waterway rib 5. Figure 3 , Figure 4 As shown, the front panel 1 has a water inlet 9 and a water outlet 10. Cooling water enters the cold water platform from the water inlet 9 on the left side, enters the upper part of the cold water platform through the water channel 7, and the rib plate 6 restricts the water flow direction. The cooling water finally flows out from the water outlet 10 along the serpentine water channel 7. Figure 5The cooling water first enters the high-temperature radiation zone near the electrode side, and then enters the relatively low-temperature area, which reduces the maximum temperature difference between the inlet and return water and can meet the maximum temperature difference design requirements.
[0029] The utility model has a simple structure, is easy to maintain and has low cost. A water channel 7 is added to the inner side of the baffle 3 near the electrode side, so that the incoming water can first enter the water-cooled walkway along the hottest part, thereby improving the water cooling effect, and controlling the maximum temperature difference between the incoming water and the return water within the design range of 10 to 15°C. The return water temperature can also be achieved below 45°C, extending the service life of the entire equipment. After adopting the water-cooled walkway of the utility model structure, the return water temperature has never exceeded 60°C. In addition, a rounded corner structure 8 is adopted at the corner of the water-cooled walkway near the electrode side, which reduces the structural welds and avoids the occurrence of frequent water leakage. While reducing the failure rate of the water-cooled walkway of the electric furnace cover lifting mechanism, it improves the efficient operation rate of the electric furnace smelting, providing the best guarantee for the smooth operation of the electric furnace smelting.
Claims
1. A water-cooled platform for lifting mechanism of electric furnace cover, comprising a front panel, a rear panel and a baffle, wherein the front panel and the rear panel have the same structure, and the outer contours of the front panel and the rear panel are closed and fixedly connected by the baffle, characterized in that: A water channel rib plate is fixedly connected to the inner side of the baffle plate close to the electrode side, one end of the water channel rib plate is fixedly connected to the baffle plate, and a gap is left between the other end and the baffle plate, so that a water channel is formed between the water channel rib plate and the baffle plate close to the electrode side; the corners of the front panel and the rear panel close to the electrode side are all chamfered structures.
2. The water-cooled platform of the electric furnace roof lifting mechanism according to claim 1, characterized in that: A water inlet is provided on the front panel or the rear panel between one end of the water channel rib plate and the baffle plate close to the electrode side.
3. The water-cooled platform of the electric furnace roof lifting mechanism according to claim 1, characterized in that: A water outlet is provided at the front panel or the rear panel above one end of the water channel rib plate.
4. The water-cooled platform of the electric furnace roof lifting mechanism according to claim 1, characterized in that: The baffles close to the electrode side are rounded structures at the corners of the front panel and the rear panel close to the electrode side.
5. The water-cooled platform of the electric furnace roof lifting mechanism according to claim 1, characterized in that: A plurality of ribs are longitudinally connected between the front panel and the rear panel, forming a serpentine water channel between the front panel and the rear panel.
6. The water-cooled platform of the electric furnace roof lifting mechanism according to claim 5, characterized in that: The rib plates are arranged alternately with adjacent rib plates.