A lifting type VD furnace vacuum refining online temperature measurement equipment

Abstract

The utility model discloses an online temperature measuring device for vacuum refining of a lifting type VD furnace, and relates to the technical field of temperature measurement of vacuum furnaces. The online temperature measuring device for vacuum refining of a lifting type VD furnace comprises a vacuum tank and a ladle, the ladle is arranged inside the vacuum tank, a cover plate is arranged on the top of the vacuum tank, a fixed tube is fixed on the cover plate, a movable rod is movably arranged on the fixed tube, a mounting block is fixed on the lower end of the movable rod, a temperature measuring component is arranged on the bottom of the mounting block, a fixed frame is fixed on one side of the top of the cover plate, a fixed rod is arranged on the inner side of the fixed frame, a movable plate is movably sleeved on the fixed rod, the upper end of the movable rod is connected to the movable plate, a reset spring is connected between the movable plate and the inner wall of the fixed frame, a winding disk is arranged on the lower side of the fixed frame, a steel rope is wound on the winding disk, and the upper end of the steel rope is connected to the movable plate, when the steel rope is wound, the temperature measuring component is driven downward in combination with the movable plate and the movable rod to immerse in the molten steel, so as to achieve the purpose of online temperature measurement, and conveniently control the time of vacuuming.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum furnace temperature measurement, in particular to a lifting type VD furnace vacuum refining online temperature measurement equipment. Background Art

[0002] In metallurgical production, for some high-quality steel grades, in order to improve the quality of molten steel, VD / VOD off-furnace vacuum refining and degassing technology is often used to vacuum degas the molten steel. It has the advantages of simple equipment, low investment, low cost, many refining varieties, high quality and simple operation. It is widely used in the metallurgical industry. In the process of vacuum degassing of molten steel, it is necessary to measure the temperature of the molten steel after breaking the vacuum to determine whether the molten steel is qualified.

[0003] At present, in the production process of VD vacuum refining furnace, temperature measurement is carried out after the molten steel has been degassed by VD. The temperature of the molten steel in a vacuum environment cannot be measured, and thus the vacuum pumping time of the molten steel cannot be controlled. This can easily lead to the vacuum pumping time being too long or too short, causing the temperature of the molten steel after the vacuum is broken in the vacuum furnace to be different from the expected temperature, thus affecting the quality of the molten steel.

[0004] In view of the above problems, we propose an online temperature measurement equipment for vacuum refining in a lifting VD furnace. Utility Model Content

[0005] Technical Solution

[0006] In order to solve the above technical problems, the utility model provides an online temperature measuring device for vacuum refining of a lifting VD furnace, comprising a vacuum tank and a ladle, the ladle being arranged on the inner side of the vacuum tank, a cover plate being installed on the top of the vacuum tank, a fixed tube being fixed on the cover plate, a movable rod being movably arranged on the fixed tube, a mounting block being fixed on the lower end of the movable rod, a temperature measuring component being installed on the bottom of the mounting block, a fixed frame being fixed on one side of the top of the cover plate, a fixed rod being arranged on the inner side of the fixed frame, a movable plate being movably sleeved on the fixed rod, the upper end of the movable rod being fixedly connected to the movable plate, a reset spring being connected between the movable plate and the inner wall of the fixed frame, a winding disk being arranged on the lower side of the interior of the fixed frame, a steel rope being wound on the winding disk, the upper end of the steel rope being fixedly connected to the movable plate, a cleaning component being arranged on the fixed tube to cooperate with the temperature measuring component.

[0007] The cleaning assembly includes a sleeve, an extrusion spring, a limit plate, a push rod and a cleaning block. The two sleeves are respectively fixed on both sides of the fixed tube, and a round hole is penetrated on the fixed tube and communicated with the inner cavity of the sleeve. The limit plate is movably arranged inside the sleeve, one end of the extrusion spring is connected to the inner wall of the sleeve, and the other end is fixedly connected to the limit plate. The push rod is movably arranged inside the round hole, and the two ends of the push rod are respectively fixedly connected to the limit plate and the cleaning block.

[0008] The cleaning block includes a scraper and a fixed block. The scraper is fixedly connected to the push rod. The two fixed blocks are respectively fixed on the upper and lower surfaces of the scraper, and the cross-section of the fixed block close to the temperature measuring component is a funnel-shaped structure. The scraper is a semi-annular structure, which cooperates with the temperature measuring component. The mounting block is a spherical structure, which cooperates with the inner side of the fixed block.

[0009] A motor is installed at the lower side of the fixing frame, the output end of the motor is connected to the winding drum, and an avoidance hole is penetrated through the fixing frame, and the steel rope cooperates with the avoidance hole.

[0010] A mounting rod is fixed to the front side of the top of the cover plate, a controller is mounted on the upper end of the mounting rod, and the controller is electrically connected to the temperature measuring component and the motor.

[0011] A plurality of support blocks are fixed inside the vacuum tank to cooperate with the ladle, and a plurality of lifting rings are fixed on the cover plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model can reel in the steel rope conveniently through the reeling disc, and pull the movable plate downward to squeeze the reset spring in combination with the sliding cooperation between the movable plate and the fixed rod, and drive the movable rod downward, thereby driving the temperature measuring component downward to approach the ladle until it is immersed in the molten steel in the ladle, and measures the temperature of the molten steel in the vacuum, so as to achieve the purpose of online temperature measurement, facilitate the staff to grasp the temperature of the molten steel in time, and accurately control the vacuum pumping time, so as to avoid the vacuum pumping time being too long or too short in the production process of the VD vacuum refining furnace, resulting in the temperature of the molten steel in the vacuum furnace after breaking the vacuum being different from the expected temperature, thereby affecting the quality of the molten steel;

[0014] The mutual cooperation between the mounting block and the inner side of the fixed block facilitates the up and down movement of the movable rod. At the same time, under the elastic action of the extrusion spring, it is convenient to squeeze the limit plate toward the fixed tube. Combined with the push rod, the scraper is driven toward the center. After the temperature measurement is completed, in the process of adjusting the temperature measuring part to move upward, the scraper with a semi-annular structure is used to scrape off the molten steel contaminated on the temperature measuring part, so as to achieve the purpose of cleaning the temperature measuring part and prevent the molten steel from solidifying on the surface of the temperature measuring part and affecting the subsequent normal use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a top view of the utility model;

[0017] Figure 3 for Figure 2Structural diagram of the middle section AA;

[0018] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0019] Figure 5 It is a side view of the utility model.

[0020] The markings in the attached drawings are: 1. vacuum tank; 2. ladle; 3. cover plate; 4. fixed pipe; 5. movable rod; 6. mounting block; 7. temperature measuring component; 8. fixed frame; 9. movable plate; 10. fixed rod; 11. steel rope; 12. reset spring; 13. take-up reel; 14. sleeve; 15. extrusion spring; 16. limit plate; 17. push rod; 18. scraper; 19. fixed block; 20. motor; 21. controller; 22. support block; 23. lifting ring. DETAILED DESCRIPTION

[0021] This specific implementation method is a lifting type VD furnace vacuum refining online temperature measurement equipment, such as Figure 1-Figure 5 As shown, the lifting type VD furnace vacuum refining online temperature measuring equipment comprises a vacuum tank 1 and a ladle 2, the ladle 2 is arranged on the inner side of the vacuum tank 1, a cover plate 3 is installed on the top of the vacuum tank 1, a fixed tube 4 is fixed on the cover plate 3, a movable rod 5 is movably arranged on the fixed tube 4, a mounting block 6 is fixed on the lower end of the movable rod 5, a temperature measuring component 7 is installed on the bottom of the mounting block 6, a fixed frame 8 is fixed on one side of the top of the cover plate 3, a fixed rod 10 is arranged on the inner side of the fixed frame 8, a movable plate 9 is movably sleeved on the fixed rod 10, the upper end of the movable rod 5 is fixedly connected to the movable plate 9, a reset spring 12 is connected between the movable plate 9 and the inner wall of the fixed frame 8, a winding disk 13 is arranged on the lower side of the fixed frame 8, a steel rope 11 is wound on the winding disk 13, and the upper end of the steel rope 11 is fixedly connected to the movable plate 9, a cleaning component is arranged on the fixed tube 4 to cooperate with the temperature measuring component 7.

[0022] The steel rope 11 can be wound up conveniently through the winding drum 13. Combined with the sliding cooperation between the movable plate 9 and the fixed rod 10, the movable plate 9 is pulled downward to squeeze the reset spring 12, and at the same time, the movable rod 5 is driven to move downward, thereby driving the temperature measuring component 7 downward to approach the ladle 2 until it is immersed in the molten steel in the ladle 2, and the temperature of the molten steel in the vacuum is measured to achieve the purpose of online temperature measurement, which is convenient for the staff to grasp the temperature of the molten steel in time and accurately control the vacuum pumping time, so as to avoid the vacuum pumping time being too long or too short during the production process of the VD vacuum refining furnace, resulting in a difference between the temperature of the molten steel in the vacuum furnace after the vacuum is broken and the expected temperature, thereby affecting the quality of the molten steel.

[0023] The cleaning assembly includes a sleeve 14, an extrusion spring 15, a limit plate 16, a push rod 17 and a cleaning block. The two sleeves 14 are respectively fixed on both sides of the fixed tube 4, and a round hole is penetrated on the fixed tube 4, which is connected with the inner cavity of the sleeve 14. The limit plate 16 is movably arranged inside the sleeve 14. One end of the extrusion spring 15 is connected to the inner wall of the sleeve 14, and the other end is fixedly connected to the limit plate 16. The push rod 17 is movably arranged inside the round hole, and the two ends of the push rod 17 are respectively fixedly connected to the limit plate 16 and the cleaning block.

[0024] The cleaning block includes a scraper 18 and a fixed block 19. The scraper 18 is fixedly connected to the push rod 17. The two fixed blocks 19 are respectively fixed on the upper and lower surfaces of the scraper 18. The cross-section of the fixed block 19 close to the temperature measuring component 7 is a funnel-shaped structure. The scraper 18 is a semi-annular structure, which cooperates with the temperature measuring component 7. The mounting block 6 is a spherical structure, which cooperates with the inner side of the fixed block 19.

[0025] The mutual cooperation between the mounting block 6 and the inner side of the fixed block 19 facilitates the up and down movement of the movable rod 5. At the same time, under the elastic action of the extrusion spring 15, it is convenient to squeeze the limit plate 16 toward the fixed tube 4. Combined with the push rod 17, the scraper 18 is driven to move toward the center. After the temperature measurement is completed, during the process of adjusting the temperature measuring part 7 to move upward, the scraper 18 with a semi-annular structure is used to scrape off the molten steel contaminated on the temperature measuring part 7 to prevent the molten steel from solidifying on the surface of the temperature measuring part 7 and affecting the subsequent normal use.

[0026] A motor 20 is installed at the lower side of the fixed frame 8, and the output end of the motor 20 is connected to the winding drum 13. An avoidance hole is penetrated through the fixed frame 8, and the steel rope 11 cooperates with the avoidance hole.

[0027] A mounting rod is fixed on the front side of the top of the cover plate 3, and a controller 21 is installed on the upper end of the mounting rod. The controller 21 is electrically connected to the temperature measuring component 7 and the motor 20, which is convenient for displaying the measured temperature and convenient for the staff to check. A number of support blocks 22 are fixed inside the vacuum tank 1 to cooperate with the ladle 2. A number of lifting rings 23 are fixed on the cover plate 3 to facilitate the adjustment of the cover plate 3 to be removed from the open end of the vacuum tank 1.

[0028] Example:

[0029] When the smelter needs to measure the temperature of the molten steel in the ladle 2, the controller 21 is used to start the motor 20, and the motor 20 drives the winding disk 13 to rotate, so as to wind up the steel rope 11. By winding up the steel rope 11, the movable plate 9 is pulled downward, and the movable plate 9 moves downward to compress the return spring 12, and at the same time, the movable rod 5 is driven to move downward, thereby driving the temperature measuring element 7 downward to approach the ladle 2;

[0030] During this process, under the action of the fixed block 19, the temperature measuring element 7, the mounting block 6 and the movable rod 5 pass through the scraper 18 smoothly in sequence, and squeeze the scraper 18 outward. Under the action of the push rod 17, the extrusion spring 15 is compressed in combination with the limit plate 16 until the temperature measuring element 7 is immersed downward into the molten steel inside the ladle 2, and the temperature of the molten steel is measured, and the measured data is transmitted to the controller 21, and displayed on the display screen of the controller 21, which is convenient for the staff to watch, thereby achieving the purpose of online measurement of the temperature of the molten steel in the vacuum, facilitating the staff to grasp the temperature of the molten steel in time, and accurately controlling the vacuum pumping time, so as to avoid the vacuum pumping time being too long or too short in the production process of the VD vacuum refining furnace, resulting in a difference between the temperature of the molten steel in the vacuum furnace after the vacuum is broken and the expected temperature, thereby affecting the quality of the molten steel;

[0031] After the temperature measurement is completed, the driving motor 20 rotates in the opposite direction, and under the action of the winding disk 13, the steel rope 11 is released, and under the elastic action of the return spring 12, the movable plate 9 is pressed upward, driving the movable plate 9 to return to the initial position upward;

[0032] In the process of the movable plate 9 moving upward, combined with the movable rod 5, the temperature measuring part 7 is driven to move upward. When the temperature measuring part 7 passes through the scraper 18, under the elastic action of the extrusion spring 15, combined with the limit plate 16 and the push rod 17, the scraper 18 is driven to be close to the outer wall of the temperature measuring part 7. As the temperature measuring part 7 moves upward, the molten steel contaminated on the temperature measuring part 7 is scraped off, so as to achieve the purpose of cleaning the temperature measuring part 7 after the temperature measurement is completed, and to prevent the molten steel from solidifying on the surface of the temperature measuring part 7 and affecting the subsequent temperature measurement.

[0033] It should be further explained that the installation structure, connection method or setting method of each component in the present invention are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented;

[0034] The temperature measuring element 7 in the present invention is a bimetallic platinum-rhodium thermal resistor. Meanwhile, the motor 20 and the controller 21 in the present invention are purchased on the market, and those skilled in the art can install and use them according to the requirements.

[0035] All technical features in this embodiment can be freely combined according to actual needs.

[0036] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An online temperature measurement device for vacuum refining of a lifting type VD furnace, comprising a vacuum tank (1) and a ladle (2), characterized in that: The ladle (2) is arranged inside the vacuum tank (1); a cover plate (3) is installed on the top of the vacuum tank (1); a fixed pipe (4) is fixed on the cover plate (3); a movable rod (5) is movably arranged on the fixed pipe (4); a mounting block (6) is fixed at the lower end of the movable rod (5); a temperature measuring component (7) is installed at the bottom of the mounting block (6); a fixing frame (8) is fixed on one side of the top of the cover plate (3); a fixing rod (10) is arranged inside the fixing frame (8); A movable plate (9) is provided on the movable sleeve of the rod (10), the upper end of the movable rod (5) is fixedly connected to the movable plate (9), a return spring (12) is connected between the movable plate (9) and the inner wall of the fixed frame (8), a winding disk (13) is provided on the lower side of the fixed frame (8), a steel rope (11) is wound on the winding disk (13), the upper end of the steel rope (11) is fixedly connected to the movable plate (9), and a cleaning component is provided on the fixed tube (4) to cooperate with the temperature measuring component (7).

2. The online temperature measuring device for vacuum refining of a lifting type VD furnace according to claim 1 is characterized in that: The cleaning component comprises a sleeve (14), an extrusion spring (15), a limit plate (16), a push rod (17) and a cleaning block. The two sleeves (14) are respectively fixed on both sides of a fixed tube (4), and a circular hole is passed through the fixed tube (4) and communicated with the inner cavity of the sleeve (14). The limit plate (16) is movably arranged inside the sleeve (14). One end of the extrusion spring (15) is connected to the inner wall of the sleeve (14), and the other end is fixedly connected to the limit plate (16). The push rod (17) is movably arranged inside the circular hole, and the two ends of the push rod (17) are respectively fixedly connected to the limit plate (16) and the cleaning block.

3. The online temperature measuring device for vacuum refining of a lifting type VD furnace according to claim 2 is characterized in that: The cleaning block comprises a scraper (18) and a fixed block (19); the scraper (18) is fixedly connected to the push rod (17); the two fixed blocks (19) are respectively fixed on the upper and lower surfaces of the scraper (18); and the cross-section of the fixed block (19) close to the temperature measuring element (7) is a funnel-shaped structure; the scraper (18) is a semi-annular structure, which cooperates with the temperature measuring element (7); and the mounting block (6) is a spherical structure, which cooperates with the inner side of the fixed block (19).

4. The online temperature measuring device for vacuum refining of a lifting type VD furnace according to claim 3 is characterized in that: A motor (20) is installed on the lower side of the fixed frame (8), the output end of the motor (20) is connected to the winding disk (13), and an avoidance hole is penetrated through the fixed frame (8), and the steel rope (11) cooperates with the avoidance hole.

5. The online temperature measuring device for vacuum refining of a lifting type VD furnace according to claim 4 is characterized in that: A mounting rod is fixed to the front side of the top of the cover plate (3), a controller (21) is mounted on the upper end of the mounting rod, and the controller (21) is electrically connected to the temperature measuring element (7) and the motor (20).

6. The online temperature measuring device for vacuum refining of a lifting type VD furnace according to claim 5 is characterized in that: A plurality of support blocks (22) are fixed inside the vacuum tank (1) to match the ladle (2), and a plurality of lifting rings (23) are fixed on the cover plate (3).

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