A LF refining furnace atomizing spraying electrode device

Abstract

The application discloses a kind of LF refining furnace atomization spraying electrode device, including LF refining furnace electrode cooling protection equipment, LF refining furnace electrode cooling protection equipment includes electrode heating rod, floating lifting assembly, electrode overheating detection mechanism, longitudinal regulator and atomization spraying cooling component, electrode heating rod is separately provided with three groups, floating lifting assembly is separately provided with two groups and symmetrically installed in the two sides of three electrode heating rods, electrode overheating detection mechanism is separately provided with three groups and respectively active sleeve embedded on three electrode heating rods, three electrode overheating detection mechanisms are fixed with connecting frame between, the outer end of connecting frame is connected with longitudinal regulator.The LF refining furnace electrode cooling protection equipment designed in the application can reduce the temperature of heating electrode, reduce the oxidation loss of electrode in air oxygen, atomization spraying electrode can be used in continuous production, and the purpose of electrode protection is achieved, the service life of electrode is improved.

Description

Technical Field

[0001] This invention relates to the field of LF refining furnace technology, specifically to an atomizing spray electrode device for an LF refining furnace. Background Technology

[0002] The LF refining furnace is a smelting equipment used in steelmaking. Its full name is "Converter-LF Refining Furnace," and it consists of two parts: a converter and an LF refining furnace. The converter primarily converts pig iron into molten steel, while the LF refining furnace further refines and polishes the steel to reduce impurities and adjust its composition and temperature. The LF refining furnace works by introducing oxygen into the molten steel, causing a chemical reaction with impurities, thereby oxidizing and reducing them to purify the steel. Simultaneously, the LF refining furnace can also adjust the steel's composition and temperature by adding appropriate alloying elements and insulating materials to meet the needs of different industrial sectors. The LF refining furnace requires heating through electrodes, which are primarily composed of carbon. During the smelting process, the LF refining furnace electrodes mainly function to conduct electricity and heat the molten steel.

[0003] However, existing electrodes for LF refining furnaces exhibit the following problems during use: due to the continuous production of the LF refining furnace, the electrode heating time is excessively long, resulting in excessively high electrode temperatures and red-hot electrodes. Upon contact with oxygen in the air, these electrodes are oxidized and corroded, causing unnecessary losses in production. Therefore, it is necessary to design corresponding technical solutions to address these problems. Summary of the Invention

[0004] The purpose of this invention is to provide an atomizing spray electrode device for an LF refining furnace, which solves the technical problem of excessively high electrode temperatures and red-hot electrodes due to continuous LF refining furnace production, leading to oxidation and corrosion upon contact with oxygen in the air, causing unnecessary losses in production. This invention designs a device specifically for cooling and protecting the electrodes of an LF refining furnace. This LF refining furnace electrode cooling and protection device includes electrode heating rods, a floating lifting assembly, an electrode overheat detection mechanism, a longitudinal adjuster, and an atomizing spray cooling assembly. Three heating electrodes of the LF refining furnace are surrounded by U-shaped steel pipes fixed to the frame columns, with multiple atomizing spray holes. Water is atomized and sprayed onto the red-hot areas of the electrodes. The device consists of gas and water pipes. In use, the gas valve is opened first, followed by the water valve. The atomization amount is adjusted by the gas flow to prevent water from dripping onto other areas and affecting production. It meets the original LF refining furnace smelting requirements while simultaneously reducing the temperature of the heating electrodes, effectively minimizing electrode oxidation and loss.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an LF refining furnace atomizing spray electrode device, comprising an LF refining furnace electrode cooling protection device, the LF refining furnace electrode cooling protection device comprising electrode heating rods, floating lifting components, electrode overheat detection mechanisms, longitudinal adjusters, and atomizing spray cooling components. The electrode heating rods are arranged in three groups, the floating lifting components are arranged in two groups and symmetrically installed on both sides of the three groups of electrode heating rods, the electrode overheat detection mechanisms are arranged in three groups and movably fitted onto the three groups of electrode heating rods respectively, a connecting frame is fixed between the three groups of electrode overheat detection mechanisms, the outer end of the connecting frame is connected to the longitudinal adjuster, the longitudinal adjuster is installed on the inner side of the atomizing spray cooling components, the atomizing spray cooling components are movably arranged on the outer side of the three groups of electrode heating rods, and a control console is connected to one side of the atomizing spray cooling components via a line; The floating lifting assembly includes a base, a drive motor, a screw, a threaded collar, and a fixing rod. The drive motor is mounted on the base and its power output end is connected to the vertically arranged screw. The threaded collar is threadedly fitted onto the screw and is connected to the atomizing spray cooling assembly through the fixing rod. The electrode overheat detection mechanism includes an outer ring and several sets of infrared sensors evenly distributed on the inner wall of the outer ring. The detection end of the infrared sensor faces the electrode heating rod and the outer end is connected to the control console through a line. The longitudinal adjuster includes a mounting base, a column, a power supply wire, an electromagnet, a magnetic block, and an outer cylinder. The mounting base is fixed to the atomizing spray cooling component by bolts. The column is vertically installed on the mounting base. The power supply wire is wound around the column and its upper end is connected to the electromagnet. The upper end of the electromagnet is movably inserted into the outer cylinder. The magnetic block is longitudinally inserted into the inner wall of the outer cylinder and its lower end is used in conjunction with the electromagnet. The atomizing spray cooling component includes a U-shaped steel pipe, atomizing spray heads, a water inlet pipe, and an air inlet pipe. The U-shaped steel pipe is located outside the three sets of electrode heating rods. The atomizing spray heads are arranged in several groups and evenly installed on the inner wall of the U-shaped steel pipe. The water inlet pipe and the air inlet pipe are both installed on the U-shaped steel pipe.

[0006] In a preferred embodiment of the present invention, the connecting frame includes a horizontal bar, an arc-shaped bar, and an oblique bar. The horizontal bar is fixed to the outer ring in the middle. The arc-shaped bars are divided into two groups and fixed to the outer rings on both sides respectively. The outer ends of the two groups of arc-shaped bars are connected to the horizontal bar. The lower part of the horizontal bar is connected to the oblique bar, which is set at an inclination. The lower end of the oblique bar is connected to the outer cylinder.

[0007] In a preferred embodiment of the present invention, the magnetic block and the electromagnet are arranged symmetrically, and the upper magnetic pole of the electromagnet is the same as the lower magnetic pole of the magnetic block when the electromagnet is energized.

[0008] In a preferred embodiment of the present invention, two sets of guide rods are symmetrically arranged on both sides of the electromagnet, with the upper ends of the two sets of guide rods fixed to the inner wall of the outer cylinder and the lower ends inserted into the electromagnet.

[0009] As a preferred embodiment of the present invention, the atomizing spray head is a centrifugal water mist spray head with model number ZSTWB33.7 / 120.

[0010] In a preferred embodiment of the present invention, the U-shaped steel pipe is in the form of a horizontally arranged U-shaped structure, and several sets of atomizing spray heads located at both ends of the U-shaped steel pipe are arranged at an angle with the nozzles facing the electrode heating rod.

[0011] In a preferred embodiment of the present invention, a gas valve is installed on the air inlet pipe and the atomization amount is adjusted by the gas volume of the gas valve, and a water valve is installed on the water inlet pipe and the water flow rate is controlled by the water valve.

[0012] In a preferred embodiment of the present invention, the diameter of the outer ring is larger than the diameter of the electrode heating rod, and a gap groove is formed between the two.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention designs a device specifically for cooling and protecting the electrodes of an LF refining furnace. This LF refining furnace electrode cooling and protection device includes electrode heating rods, a floating lifting assembly, an electrode overheat detection mechanism, a longitudinal adjuster, and an atomizing spray cooling assembly. The device surrounds the three heating electrodes of the LF refining furnace with U-shaped steel pipes, fixed to the frame columns, and has multiple atomizing spray holes. Water is atomized and sprayed onto the red-hot areas of the electrodes. The device consists of gas and water pipes. In use, the gas valve is opened first, followed by the water valve. The atomization amount is adjusted by the gas flow rate to prevent water from dripping onto other areas and affecting production. It meets the original LF refining furnace smelting requirements while simultaneously reducing the temperature of the heating electrodes, effectively reducing electrode oxidation and loss.

[0014] 2. The electrode cooling protection device for the LF refining furnace designed in this invention can reduce the temperature of the heating electrode, reduce the oxidation loss of the electrode by oxygen in the air, and spray the electrode with atomized solution during continuous production to protect the electrode and improve its service life. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a structural diagram of the electrode overheat detection mechanism described in this invention; Figure 3 This is a diagram showing the internal structure of the electrode overheat detection mechanism described in this invention. Figure 4This is a structural diagram of the atomizing spray cooling component described in this invention.

[0016] In the diagram: 1. Electrode heating rod; 2. Connecting frame; 3. Control console; 4. Base; 5. Drive motor; 6. Screw; 7. Threaded collar; 8. Fixing rod; 9. Outer ring; 10. Infrared sensor; 11. Mounting base; 12. Column; 13. Power cable; 14. Electromagnet; 15. Magnetic block; 16. Outer cylinder; 17. U-shaped steel pipe; 18. Atomizing spray head; 19. Water inlet pipe; 20. Air inlet pipe; 21. Crossbar; 22. Arc-shaped rod; 23. Diagonal rod; 24. Guide rod; 25. Gas valve; 26. Water valve; 27. Gap groove. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0018] Please see Figures 1-4 This invention provides a technical solution: an LF refining furnace atomizing spray electrode device, including an LF refining furnace electrode cooling protection device. The LF refining furnace electrode cooling protection device includes an electrode heating rod 1, a floating lifting assembly, an electrode overheat detection mechanism, a longitudinal adjuster, and an atomizing spray cooling assembly. The electrode heating rod 1 is divided into three groups. The floating lifting assembly is divided into two groups and symmetrically installed on both sides of the three groups of electrode heating rods 1. The electrode overheat detection mechanism is divided into three groups and is movably fitted onto the three groups of electrode heating rods 1. A connecting frame 2 is fixed between the three groups of electrode overheat detection mechanisms. The outer end of the connecting frame 2 is connected to the longitudinal adjuster. The longitudinal adjuster is installed on the inner side of the atomizing spray cooling assembly. The atomizing spray cooling assembly is movably set on the outer side of the three groups of electrode heating rods 1. A control console 3 is connected to one side of the atomizing spray cooling assembly via a line. The floating lifting assembly includes a base 4, a drive motor 5, a screw 6, a threaded collar 7, and a fixing rod 8. The drive motor 5 is mounted on the base 4 and its power output end is connected to the vertically arranged screw 6. The threaded collar 7 is threadedly fitted onto the screw 6 and is connected to the atomizing spray cooling assembly through the fixing rod 8. The drive motor 5 drives the screw 6 to rotate, and the screw 6 drives the threaded collar 7 to move during the rotation. During the movement, the electrode overheat detection mechanism moves longitudinally along the electrode heating rod 1. Note: Under normal conditions, the electrode overheat detection mechanism and the atomizing spray cooling component are on the same plane. When spray cooling is required, the height of the electrode overheat detection mechanism is finely adjusted by the longitudinal adjuster to prevent the subsequent atomizing spray cooling component from spraying onto the overheat detection mechanism.

[0019] The electrode overheat detection mechanism includes an outer ring 9 and several sets of infrared sensors 10 evenly distributed on the inner wall of the outer ring 9. The detection end of the infrared sensor 10 faces the electrode heating rod 1 and the outer end is connected to the control console 3 through a line. When a certain part of the electrode heating rod 1 turns red due to high temperature, the infrared sensor 10 senses it and transmits the signal to the control console 3. The longitudinal adjuster includes a mounting base 11, a column 12, a power supply wire 13, an electromagnet 14, a magnetic block 15, and an outer cylinder 16. The mounting base 11 is fixed to the atomizing spray cooling component by bolts. The column 12 is vertically installed on the mounting base 11. The power supply wire 13 is wound around the column 12 and its upper end is connected to the electromagnet 14. The upper end of the electromagnet 14 is movably inserted into the outer cylinder 16. The magnetic block 15 is longitudinally inserted into the inner wall of the outer cylinder 16 and its lower end is used in conjunction with the electromagnet 14. The control console 3 first controls the energized electromagnet 14. When the electromagnet 14 is energized, it generates magnetism. At this time, the contact parts of the magnetic block 15 and the electromagnet 14 repel each other because they are of the same pole, pushing the upper magnetic block 15 to move upward, thereby driving the overheat detection mechanism to move upward. The atomizing spray cooling component includes a U-shaped steel pipe 17, an atomizing spray head 18, a water inlet pipe 19, and an air inlet pipe 20. The U-shaped steel pipe 17 is located on the outside of the three sets of electrode heating rods 1. The atomizing spray head 18 is divided into several groups and evenly installed on the inner wall of the U-shaped steel pipe 17. The water inlet pipe 19 and the air inlet pipe 20 are both installed on the U-shaped steel pipe 17. The water inlet pipe 19 and the air inlet pipe 20 introduce water and gas, which are then atomized and sprayed out through the atomizing spray head 18, so as to achieve the purpose of automatic detection and cooling protection of the electrode heating rod 1.

[0020] Further improvements, such as Figure 1 As shown: The connecting frame 2 includes a horizontal bar 21, an arc-shaped bar 22, and an inclined bar 23. The horizontal bar 21 is fixed on the outer ring 9 in the middle. The arc-shaped bars 22 are divided into two groups and fixed on the outer rings 9 on both sides respectively. The outer ends of the two groups of arc-shaped bars 22 are connected to the horizontal bar 21. The lower part of the horizontal bar 21 is connected to the inclined bar 23, which is set at an inclination. The lower end of the inclined bar 23 is connected to the outer cylinder 16. This design makes it easy to finely adjust the height of the electrode overheat detection mechanism through the longitudinal adjuster.

[0021] Further improvements, such as Figure 2 and 3As shown: Magnetic block 15 and electromagnet 14 are arranged symmetrically above and below. Magnetic block 15 is a conventional magnet. When the electromagnet 14 is energized, the upper magnetic pole is the same as the lower magnetic pole of the magnetic block 15. Under normal conditions, the magnetic block 15 and electromagnet 14 are in contact. When it is necessary to raise the electrode overheat detection mechanism, the electromagnet 14 can be energized. The electromagnet 14 generates magnetism and pushes the upper magnetic block 15 to move upward.

[0022] Further improvements, such as Figure 3 As shown: Two sets of guide rods 24 are symmetrically arranged on both sides of the electromagnet 14. The upper ends of the two sets of guide rods 24 are fixed to the inner wall of the outer cylinder 16 and the lower ends are inserted into the electromagnet. This design facilitates the vertical directional movement of the outer cylinder 16 and improves the stability of the floating fine adjustment of the electrode overheat detection mechanism.

[0023] Further improvements, such as Figure 1 As shown: The atomizing spray head 18 is a centrifugal water mist nozzle and its model is ZSTWB33.7 / 120.

[0024] Further improvements, such as Figure 4 As shown: The U-shaped steel pipe 17 has a horizontally arranged U-shaped structure. Several sets of atomizing spray heads 18 located at both ends of the U-shaped steel pipe 17 are arranged at an angle with the nozzles facing the electrode heating rod 1. This design facilitates the all-round cooling of the electrode heating rod 1.

[0025] Further improvements, such as Figure 1 As shown: A gas valve 25 is installed on the air inlet pipe 20, and the amount of atomization is adjusted by the amount of gas through the gas valve 25. A water valve 26 is installed on the water inlet pipe 19, and the amount of water flow is controlled by the water valve 26. The flow rate is controlled as needed.

[0026] Specifically, the outer ring 9 has a diameter larger than the electrode heating rod 1, and a gap groove 27 is formed between the two to prevent the outer ring 9 from directly contacting the electrode heating rod 1, thereby protecting the outer ring 9 and the infrared sensor 10.

[0027] In use: The present invention drives the screw 6 to rotate via the drive motor 5. During the rotation of the screw 6, the threaded collar 7 moves, which in turn moves the electrode overheat detection mechanism along the longitudinal direction of the electrode heating rod 1. When a certain part of the electrode heating rod 1 turns red due to high temperature, the infrared sensor 10 detects it and transmits the signal to the control console 3. The control console 3 first controls the energized electromagnet 14. The electromagnet 14 generates magnetism when energized. At this time, the magnetic block 15 and the contact part of the electromagnet 14 repel each other due to their like poles, pushing the upper magnetic block 15 to move upward, thereby driving the electrode overheat detection mechanism to move upward. The water inlet pipe 19 and the air inlet pipe 20 introduce water and gas, which are then atomized and sprayed out through the atomizing spray head 18, achieving the purpose of automated detection and cooling protection of the electrode heating rod 1.

[0028] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0029] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A LF refining furnace atomizing spray electrode device, comprising a LF refining furnace electrode cooling protection device, characterized in that: The LF refining furnace electrode cooling protection device includes an electrode heating rod (1), a floating lifting assembly, an electrode overheat detection mechanism, a longitudinal regulator, and an atomizing spray cooling assembly. The electrode heating rod (1) is divided into three groups. The floating lifting assembly is divided into two groups and is symmetrically installed on both sides of the three groups of electrode heating rods (1). The electrode overheat detection mechanism is divided into three groups and is movably fitted onto the three groups of electrode heating rods (1). A connecting frame (2) is fixed between the three groups of electrode overheat detection mechanisms. The outer end of the connecting frame (2) is connected to the longitudinal regulator. The longitudinal regulator is installed on the inner side of the atomizing spray cooling assembly. The atomizing spray cooling assembly is movably set on the outer side of the three groups of electrode heating rods (1). A control console (3) is connected to one side of the atomizing spray cooling assembly via a line. The floating lifting assembly includes a base (4), a drive motor (5), a screw (6), a threaded collar (7), and a fixing rod (8). The drive motor (5) is mounted on the base (4) and its power output end is connected to the vertically arranged screw (6). The threaded collar (7) is threadedly fitted onto the screw (6) and is connected to the atomizing spray cooling assembly through the fixing rod (8). The electrode overheat detection mechanism includes an outer ring (9) and several sets of infrared sensors (10) evenly distributed on the inner wall of the outer ring (9). The detection end of the infrared sensor (10) faces the electrode heating rod (1) and the outer end is connected to the control console (3) through a line. The longitudinal adjuster includes a mounting base (11), a column (12), a power supply wire (13), an electromagnet (14), a magnetic block (15), and an outer cylinder (16). The mounting base (11) is fixed to the atomizing spray cooling assembly by bolts. The column (12) is vertically installed on the mounting base (11). The power supply wire (13) is wound around the column (12) and its upper end is connected to the electromagnet (14). The upper end of the electromagnet (14) is movably inserted into the outer cylinder (16). The magnetic block (15) is longitudinally inserted into the inner wall of the outer cylinder (16) and its lower end is used in conjunction with the electromagnet (14). The atomizing spray cooling component includes a U-shaped steel pipe (17), an atomizing spray head (18), a water inlet pipe (19), and an air inlet pipe (20). The U-shaped steel pipe (17) is located on the outside of the three sets of electrode heating rods (1). The atomizing spray head (18) is divided into several groups and evenly installed on the inner wall of the U-shaped steel pipe (17). The water inlet pipe (19) and the air inlet pipe (20) are both installed on the U-shaped steel pipe (17).

2. A LF refining furnace atomizing spray electrode device as claimed in claim 1, wherein: The connecting frame (2) includes a horizontal bar (21), an arc-shaped bar (22) and a diagonal bar (23). The horizontal bar (21) is fixed on the outer ring (9) in the middle. The arc-shaped bar (22) is divided into two groups and fixed on the outer ring (9) on both sides respectively. The outer ends of the two groups of arc-shaped bars (22) are connected to the horizontal bar (21). The lower part of the horizontal bar (21) is connected to the diagonal bar (23) which is set in an inclined shape. The lower end of the diagonal bar (23) is connected to the outer cylinder (16).

3. The atomizing spray electrode device for an LF refining furnace according to claim 1, characterized in that: The magnetic block (15) and the electromagnet (14) are arranged symmetrically on top of each other. When the electromagnet (14) is energized, the magnetic pole at the upper end is the same as the magnetic pole at the lower end of the magnetic block (15).

4. The atomizing spray electrode device for an LF refining furnace according to claim 3, characterized in that: Two sets of guide rods (24) are symmetrically arranged on both sides of the electromagnet (14). The upper ends of the two sets of guide rods (24) are fixed to the inner wall of the outer cylinder (16) and the lower ends are inserted into the electromagnet (14).

5. The atomizing spray electrode device for an LF refining furnace according to claim 1, characterized in that: The atomizing spray head (18) is a centrifugal water mist nozzle and its model is ZSTWB33.7 / 120.

6. The atomizing spray electrode device for an LF refining furnace according to claim 1, characterized in that: The U-shaped steel pipe (17) has a horizontally arranged U-shaped structure. Several sets of atomizing spray heads (18) located at both ends of the U-shaped steel pipe (17) are arranged at an angle and the nozzles face the electrode heating rod (1).

7. The atomizing spray electrode device for an LF refining furnace according to claim 1, characterized in that: The air inlet pipe (20) is equipped with a gas valve (25) and the amount of atomization is adjusted by the gas size of the gas valve (25). The water inlet pipe (19) is equipped with a water valve (26) and the water flow rate is controlled by the water valve (26).

8. The atomizing spray electrode device for an LF refining furnace according to claim 6, characterized in that: The outer ring (9) has a diameter larger than that of the electrode heating rod (1), and a gap groove (27) is formed between them.

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