A device for detecting slag level in an electroslag furnace
By designing a liquid level detection device including driver, roller and wire in an electric slag furnace, the problem of inaccurate liquid level observation caused by the gas hood is solved, and the accurate detection and limitation of the liquid level height in the crystallizer is achieved, and safety accidents such as slag and steel are avoided.
Patent Information
- Application Number
- CN202420888125.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-04-26
AI Technical Summary
When gas-protected steel seeds are smelted in an electric slag furnace, due to the setting of the gas-protected cover, the operator cannot directly observe the liquid level of the slag surface in the crystallizer, and the observation effect of the high-temperature camera is affected by the volatility of smoke and dust, resulting in inaccurate liquid level observation, which may cause major safety accidents such as slag and steel run.
A slag level detection device in an electric slag furnace is designed, including a driver, roller and wire in the gas cover. The wire is connected to the conductive rod. The driver controls the retraction and placement of the conductor to adjust the height of the conductive rod, and the accurate detection of the slag level in the crystallizer is achieved.
Through this device, the liquid level in the crystallizer can be accurately defined, preventing slag and steel accidents caused by excessive liquid level, ensuring the safety of the smelting process, and avoiding economic losses.
Smart Images
Figure CN222744344U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric slag furnaces, in particular to a device for detecting the slag liquid level in an electric slag furnace. Background Art
[0002] Electroslag remelting is a method of melting using the resistance heat generated when electric current passes through molten slag as a heat source, and is mainly used to improve the purity of metals. Electroslag remelting requires the use of an electroslag furnace to melt the metal. Currently, when melting gas-shielded steel, a gas shield needs to be installed on the crystallizer of the electroslag furnace. Due to the installation of the gas shield, the operator cannot directly observe the slag surface level in the crystallizer with his eyes. The method of using a high-temperature camera in the gas shield for observation is also due to the volatilization of smoke and dust on the slag surface, resulting in inaccurate observation of the liquid surface. If the slag surface is too high, it is easy to cause major safety accidents such as slag leakage and steel leakage during the production process. To this end, we propose a device for detecting the slag level in an electroslag furnace. Utility Model Content
[0003] The utility model aims to provide a device for detecting the slag level in an electroslag furnace to solve the problems raised in the above-mentioned background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for detecting the slag level in an electric slag furnace, comprising a gas protection cover, the gas protection cover is fixedly installed on the top of the crystallizer, a driver is fixedly installed in the gas protection cover, a roller is fixedly installed in the driver, a wire is wrapped around the side wall of the roller, and one end of the wire passes through the crystallizer and is fixedly connected to a conductive rod.
[0005] Preferably, a mounting plate is fixedly installed in the air protection cover, a guide mechanism is fixedly installed on the surface of the mounting plate, the guide mechanism includes a fixed plate, a support frame symmetrically distributed frontally and rearwardly is fixedly installed on the surface of the fixed plate, a rotating frame is rotatably connected in the support frame, an assembly groove is opened on the side wall of the rotating frame, a guide wheel is rotatably connected in the assembly groove, and a positioning assembly is installed between the rotating frame and the support frame.
[0006] Preferably, the positioning assembly includes a first positioning hole, the first positioning hole is evenly opened on the side wall of the rotating frame, the side wall of the supporting frame is evenly opened with a second positioning hole, the side wall of the supporting frame is opened with a fixing screw hole, the positioning frame is fixedly assembled in the fixing screw hole by a fixing bolt, and the side wall of the positioning frame is fixedly connected with a positioning pin.
[0007] Preferably, the number of the positioning pins is at least two, and the two positioning pins are symmetrically distributed left and right about the center of the positioning frame.
[0008] Compared with the prior art, the beneficial effects of the utility model are: a slag level detection device in an electric slag furnace, a driver for driving the wire to be retracted and extended is arranged in the gas protection cover, the wire is connected to the conductive rod, and the height position of the conductive rod in the crystallizer is controlled by retracting and extending the wire, and then the slag surface liquid level height in the crystallizer is detected by the conductive rod. Through this device, the height position of the liquid level in the crystallizer can be effectively and accurately limited to prevent major safety accidents such as slag leakage and steel leakage caused by excessively high liquid level, protect the safety of the smelting process, prevent major economic losses and personal safety. The device is arranged in the gas protection cover, and the overall structure is simple. It can be switched between different furnaces with the gas protection cover, and the installation process is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a structural schematic diagram of the utility model.
[0010] Figure 2 It is a structural schematic diagram of the guide mechanism of the utility model.
[0011] Figure 3 It is a structural schematic diagram of the positioning component of the utility model.
[0012] In the figure: 1, gas protection cover, 2, driver, 3, roller, 4, wire, 5, conductive rod, 6, mounting plate, 7, guide mechanism, 71, fixing plate, 72, support frame, 73, rotating frame, 74, assembly groove, 75, guide wheel, 8, positioning assembly, 81, first positioning hole, 82, second positioning hole, 83, fixing screw hole, 84, positioning frame, 85, fixing bolt, 86, positioning pin, 9, crystallizer. DETAILED DESCRIPTION
[0013] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0014] See also Figure 1 , Figure 2 and Figure 3The utility model provides a technical solution: a slag level detection device in an electroslag furnace, comprising a gas protection cover 1, the gas protection cover 1 is fixedly assembled on the top of a crystallizer 9, a dummy electrode located in the crystallizer 9 is suspended at the center of the gas protection cover 1, and the dummy electrode is used to cooperate with the crystallizer 9 to perform electroslag remelting operation on the metal, a driver 2 is fixedly assembled in the gas protection cover 1, a roller 3 is assembled in the driver 2, a driving motor is built in the driver 2, the driver 2 is electrically connected to an external power supply and an external controller, and a control signal is sent to the driver 2 through the external controller, so that the driver 2 drives the roller 3 to rotate forward or reverse, a wire 4 is wound around the side wall of the roller 3, and the end of the wire 4 penetrates into the gas protection cover 1 and is fixedly connected to a conductive rod 5, and the wire 4 entering the gas protection cover 1 and the crystallizer 9 can be retracted and released through the cooperation of the driver 2 and the roller 3, and the height of the wire 4 in the crystallizer 9 can be controlled.
[0015] like Figure 1 As shown in the figure, the conductive rod 5 is connected to the external electrical signal detection sensor through the wire 4. When the liquid level in the electroslag furnace crystallizer 9 rises to the position of the conductive rod 5, the conductive rod 5 will be energized and output an electrical signal to the outside through the wire 4. At this time, it means that the liquid level has reached the height of the conductive rod 5. By adjusting the height position of the conductive rod 5 in the crystallizer 9, the demand for detecting the liquid level height in the crystallizer 9 can be met.
[0016] A mounting plate 6 is integrally formed in the inner cavity of the gas protection cover 1, and a guide mechanism 7 is fixedly installed on the surface of the mounting plate 6. The guide mechanism 7 is provided to limit the lowering position of the wire 4 in the crystallizer 9 to prevent the wire 4 from colliding with the inner wall of the crystallizer 9 during the lowering process in the crystallizer 9, causing damage to the wire 4 and affecting the conduction of the electrical signal.
[0017] like Figure 2 and Figure 3 As shown in the figure, the guide mechanism 7 includes a fixing plate 71, and connecting screw holes are provided at the four corners of the fixing plate 71. The fixing plate 71 is connected and fixed to the mounting plate 6 by screwing the connecting bolts in the connecting screw holes. The surface of the fixing plate 71 is welded and fixed with support frames 72 symmetrically distributed in the front and rear. A rotating frame 73 is rotatably connected between the support frames 72 on both sides. The side wall of the rotating frame 73 is provided with an assembly groove 74. A guide wheel 75 is rotatably connected in the assembly groove 74, so that the wire 4 passes along the middle of the guide wheel 75. The guide wheel 75 is used to limit the lowering position of the wire 4, thereby improving the verticality of the wire 4 lowered in the crystallizer 9.
[0018] A positioning assembly 8 is fixedly assembled between the rotating frame 73 and the supporting frame 72. The positioning assembly 8 can limit and fix the rotation angle of the rotating frame 73 in the supporting frame 72, adjust the rotation angle of the rotating frame 73 in the supporting frame 72, and adjust the supporting position of the guide wheel 75, thereby meeting different requirements for limiting and guiding the wire 4.
[0019] like Figure 3 As shown in the figure, the positioning assembly 8 includes a first positioning hole 81, and the first positioning hole 81 is evenly opened on the side wall of the rotating frame 73. The side wall of the support frame 72 is evenly opened with a second positioning hole 82. The positions of the first positioning hole 81 and the second positioning hole 82 correspond to each other. The side wall of the support frame 72 is opened with a fixing screw hole 83. The side wall of the support frame 72 is equipped with a positioning frame 84. The positioning frame 84 is fixedly connected to the side wall of the support frame 72 by screwing the fixing bolt 85 at the center with the fixing screw hole 83. The side wall of the positioning frame 84 is integrally formed with a positioning pin 86 that penetrates the second positioning hole 82 and the first positioning hole 81. The positioning pin 86 is inserted into the second positioning hole 82 and the first positioning hole 81 to limit and fix the relative angle between the rotating frame 73 and the supporting frame 72. The positioning pins 86 are symmetrically distributed on the left and right sides of the center of the positioning frame 84. The stability of the position of the rotating frame 73 is enhanced by setting symmetrical positioning pins 86. When the guide mechanism 7 is assembled and fixed, the relative angle between the rotating frame 73 and the supporting frame 72 is adjusted and fixed. The overall adjustment and assembly process is relatively simple, which improves the installation efficiency of the guide mechanism 7 and also enables the guide mechanism 7 to meet more guiding requirements for the wire 4.
[0020] Working principle: when it is necessary to limit the liquid level height in the crystallizer 9, the retracted and extended length of the wire 4 is limited, and the rotation of the roller 3 is driven by the driver 2 to lower the wire 4 and the conductive rod 5 into the crystallizer 9. When the conductive rod 5 reaches the specified liquid level height, the lowering of the wire 4 is stopped. At this time, the liquid level in the crystallizer 9 rises. When the liquid level rises to the conductive rod 5, the conductive rod 5 is energized to output an electrical signal through the wire 4. It can be seen that the liquid level has reached the specified height. The device can effectively judge the liquid level height in the crystallizer 9 in the electric slag furnace, thereby avoiding major safety accidents such as slag leakage and steel leakage due to excessively high liquid level.
Claims
1. A device for detecting the slag level in an electroslag furnace, comprising a gas shield (1), characterized in that: The gas protection cover (1) is fixedly mounted on the top of the crystallizer (9), a driver (2) is fixedly mounted inside the gas protection cover (1), a roller (3) is fixedly mounted inside the driver (2), a wire (4) is wound around the side wall of the roller (3), and one end of the wire (4) passes through the crystallizer (9) and is fixedly connected to a conductive rod (5).
2. The device for detecting the slag level in an electroslag furnace according to claim 1, characterized in that: The gas protection cover (1) is fixedly equipped with a mounting plate (6), the surface of the mounting plate (6) is fixedly equipped with a guide mechanism (7), the guide mechanism (7) comprises a fixed plate (71), the surface of the fixed plate (71) is fixedly equipped with a support frame (72) symmetrically distributed in the front and rear, the support frame (72) is rotatably connected with a rotating frame (73), the side wall of the rotating frame (73) is provided with an assembly groove (74), the assembly groove (74) is rotatably connected with a guide wheel (75), and a positioning component (8) is installed between the rotating frame (73) and the support frame (72).
3. The device for detecting the slag level in an electroslag furnace according to claim 2, characterized in that: The positioning assembly (8) comprises a first positioning hole (81), the first positioning hole (81) is evenly formed on the side wall of the rotating frame (73), the side wall of the supporting frame (72) is evenly formed with a second positioning hole (82), the side wall of the supporting frame (72) is formed with a fixing screw hole (83), a positioning frame (84) is fixedly assembled in the fixing screw hole (83) by a fixing bolt (85), and the side wall of the positioning frame (84) is fixedly connected with a positioning pin (86).
4. The device for detecting the slag level in an electroslag furnace according to claim 3, characterized in that: The number of the positioning pins (86) is at least two, and the two positioning pins (86) are symmetrically distributed left and right around the center of the positioning frame (84).