Smelting converter body capable of continuously measuring temperature

Abstract

The utility model discloses a smelting converter body capable of continuously measuring temperature, which relates to the technical field of converter smelting and comprises a converter body, a plurality of air inlet and outlet pipes are arranged in the converter body, and a bridge plate is arranged on one side of each air inlet and outlet pipe far away from the inside of the converter body. Three rows of thermocouple bodies are correspondingly arranged on the side, close to the air inlet and outlet pipe, of the bridge plate, the first row of thermocouple bodies are located above the air inlet and outlet pipe and are 18-22 cm away from the center point of an air hole, the second row of thermocouple bodies are located above the air inlet and outlet pipe and are 8-12 cm away from the center point of the air hole, and the third row of thermocouple bodies are located at the position 8-12 cm away from the lower portion of the air hole of the air inlet and outlet pipe. Through the arc-shaped plate, the bridge plate, the arc-shaped attaching strip and the thermocouple body, the influence of rotation shaking of the converter body on the thermocouple body is reduced, and the stability of the position of the thermocouple body is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of converter smelting, in particular to a smelting converter furnace body capable of continuous temperature measurement. Background Art

[0002] The smelting converter is a key piece of equipment in the copper smelting industry. The converter body consists of a shell and lining. The shell is welded from steel plates, while the lining comprises a working layer, a filling layer, and a permanent layer. From top to bottom, the converter is divided into three sections: the cap, the body, and the bottom. Temperature measurement in the smelting converter is crucial for ensuring molten steel quality and production efficiency in copper smelting. Accurate temperature measurement helps operators monitor temperature fluctuations within the converter, allowing them to optimally schedule operations such as oxygen blowing and charging, thereby optimizing the smelting cycle.

[0003] In existing converter smelting temperature measurement processes, insert thermocouples are typically used to directly measure the molten copper temperature. However, this method cannot provide continuous measurement throughout the smelting process. Converter smelting is a dynamic process, and the molten copper temperature constantly changes with operations such as oxygen blowing and material addition. Insert thermocouples can only obtain instantaneous temperature values and cannot continuously monitor temperature trends. This makes it difficult for operators to adjust process parameters such as oxygen blowing and coolant addition based on real-time temperature changes, which can easily cause the smelting process to deviate from optimal process conditions.

[0004] To address the aforementioned issue of inability to continuously measure temperature during the smelting process, thermocouples are fixed above and below the converter's tuyere. These thermocouples move in sync with the converter's operation. During converter smelting, the vicinity of the tuyere is a region where oxygen and molten steel react intensely, resulting in complex temperature fluctuations. By fixing these thermocouples above and below the tuyere and synchronizing their movement, we can acquire real-time temperature data at various locations within this region, building a more complete temperature field model.

[0005] However, in existing converter temperature measurement devices, the thermocouple, fixed at the tuyere and rotating with the converter, can maintain excessively high temperatures. In high-temperature environments, various harmful media can contaminate and corrode the thermocouple, which can also oxidize and volatilize under high temperatures. Long-term high temperatures can also cause recrystallization and embrittlement of the thermocouple, all of which can affect the insulation strength of the thermocouple and lead to micro-leakage currents that reduce the millivolt value. Utility Model Content

[0006] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a smelting converter furnace body with sustainable temperature measurement, which solves the problem that continuous measurement cannot be performed during the smelting process.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A smelting converter furnace body capable of continuous temperature measurement comprises a converter body, wherein a plurality of inlet and outlet air ducts are provided inside the converter body, a bridge plate is provided on the side of the inlet and outlet air ducts away from the interior of the converter body, and three rows of thermocouple bodies are provided on the side of the bridge plate close to the inlet and outlet air ducts. The first row of thermocouple bodies is located above the inlet and outlet air ducts, 18-22 cm from the center of the wind eye. At 20 cm above the center of the wind eye, the airflow velocity has significantly decayed and a temperature gradient begins to appear. This position can capture the temperature change after the airflow exchanges heat with the surrounding environment, reflecting the temperature decay law of the airflow during the diffusion process. The second row of thermocouple bodies is located above the inlet and outlet air ducts, 8-12 cm from the center of the wind eye. The third row of thermocouple bodies is located 8-12 cm below the wind eye of the inlet and outlet air ducts. At 10 cm above the center of the wind eye, the airflow velocity is still relatively high, but a temperature gradient has begun to form. This location can monitor temperature changes as the airflow approaches the center, reflecting the initial temperature characteristics of the airflow during impact or discharge. The thermocouple body is used to monitor the temperature of the converter body. Because the front connecting piece of the thermocouple body is galvanized copper and welded to the surface of the converter body, this ensures stable operation of the temperature measurement point during operation.

[0009] As a further improvement to the present invention, a through-tube is fixedly connected to the upper portion of the converter body. Two curved plates are symmetrically fixedly connected to the side of the through-tube away from the converter body. A through-hole is provided on one side of the converter body, and a flat groove is provided on the bottom end of each curved plate, near the air inlet and outlet ducts. The curved plates and flat grooves form a vertical surface, which better secures the bridge plate.

[0010] As a further improvement to the present invention, several bolts are threaded through the interior of the planar grooves, and nuts are threaded onto the exterior of the bolts, which fit onto the exterior surface of the planar grooves. The series connection of the bridge plate and the thermocouple body by bolts allows for quick replacement of the thermocouple body if it becomes damaged, compared to welding.

[0011] As a further improvement to the present invention, a curved fitting strip is fixedly connected to the top of the bridge plate. The side of the curved fitting strip, which is adjacent to the air inlet and outlet ducts, fits against the outer surface of the curved plate. The surface of the curved fitting strip is provided with a plurality of threaded holes, the same number of which is equal to the number of bolts, with each bolt threadedly connected within a threaded hole. The fit between the curved fitting strip and the surface of the curved plate prevents the thermocouple body from shaking due to the operation of the converter body, thereby preventing vibration of the converter body during rotation and smelting, which could cause the thermocouple body to loosen or shift.

[0012] As a further improvement to the present invention, the bridge plate is provided with a plurality of heat dissipation openings between the thermocouple bodies. A connecting segment 1 is provided on the side of the bridge plate proximate the through-hole. The connecting segment 1 is inserted through the through-hole. A rotating structure is rotatably connected to the side of the connecting segment 1 away from the bridge plate, and a connecting segment 2 is rotatably connected to the side of the rotating structure away from the connecting segment 1. The rotatable connection between the connecting segments 1 and 2 by the rotating structure allows the connecting segments 1 and 2 to twist when the converter body rotates, thereby preventing damage to the wire body through the rotational connection.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The curved plate, bridge plate, curved fitting strip, and thermocouple body reduce the impact of the converter's rotational vibration on the thermocouple body, ensuring the stability of the thermocouple body's position. This also enables continuous temperature measurement during the smelting process. The thermocouple body moves synchronously with the converter body, avoiding measurement errors caused by converter shaking or position changes.

[0015] 2. The two-stage design of the converter body, connecting section 1, rotating structure, and connecting section 2, combined with the rotating structure, effectively reduces curling and wear of the connecting wire during rotation. This disperses the stress generated by the converter rotation, avoids stress concentration that could damage the connecting wire, and extends the overall service life of the connecting wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the utility model from another angle.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the bridge plate, arc-shaped fitting strip and thermocouple body in the utility model.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the arc plate, bolts and nuts in the utility model.

[0020] Figure 5 It is a three-dimensional structural diagram of the converter body, air inlet and outlet ducts and through holes of the utility model.

[0021] In the figure: 101, converter body; 102, through tube; 103, air inlet and outlet duct; 104, through hole; 105, curved plate; 106, flat groove; 107, bolt; 108, nut; 201, bridge plate; 202, curved fitting strip; 203, threaded hole; 204, heat dissipation port; 205, thermocouple body; 206, connecting section 1; 207, rotating structure; 208, connecting section 2. DETAILED DESCRIPTION

[0022] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0024] As shown in the figure, a smelting converter furnace body capable of continuous temperature measurement includes a converter body 101 , an arc-shaped plate 105 , bolts 107 , nuts 108 , a bridge plate 201 , a heat dissipation port 204 , a thermocouple body 205 and a rotating structure 207 .

[0025] When using the present invention, the curved fitting strip 202 is first aligned with the exterior of the curved plate 105, so that the threaded hole 203 is aligned with the threaded hole provided in the curved plate 105. Bolts 107 are then passed through the threaded hole 203 and the threaded hole provided in the curved plate 105. The nut 108 is then rotated in the flat groove 106 until it is securely fastened to the surface of the flat groove 106. This ensures that the bridge plate 201 is stably fitted to the surface of the curved plate 105. This prevents the thermocouple body 205 from shifting when the converter body 101 rotates. A fully secured thermocouple body 205 ensures that the measurement point is always in the correct position, reducing measurement errors introduced by positional variations. Furthermore, temperature is a key factor in controlling smelting parameters during the smelting process. Accurate temperature measurement data facilitates precise control of smelting parameters such as fuel supply and air flow, thereby improving smelting efficiency and product quality.

[0026] Since the thermocouple bodies 205 are arranged in three rows, two rows are arranged above the eye of the air inlet and outlet ducts 103, and one row is arranged below the eye of the air inlet and outlet ducts 103. By arranging multiple rows of thermocouple bodies 205 above and below the eye of the air, it is possible to simultaneously measure the temperature at different positions in the converter body 101. This multi-point measurement method can more comprehensively reflect the temperature distribution in the converter body 101, thereby improving the accuracy and reliability of temperature measurement. Moreover, continuous temperature measurement can reflect the temperature changes in the converter body 101 in real time, providing timely and accurate data support for monitoring the smelting process. By analyzing the temperature data, smelting parameters such as fuel supply, air flow, etc. can be adjusted in a timely manner to achieve precise control of the smelting process. This helps to improve smelting efficiency, reduce energy consumption, and improve product quality.

[0027] By providing a number of heat dissipation ports 204 on the surface of the bridge plate 201 to which the thermocouple body 205 is fixed, when the converter body 101 drives the thermocouple body 205 to rotate, wind can penetrate the thermocouple body 205 from the heat dissipation ports 204, thereby achieving the effect of dissipating heat for the thermocouple body 205. The thermocouple body 205 is prone to increased measurement errors or component aging problems when operating for a long time in a high-temperature environment. Introducing airflow through the heat dissipation ports 204 to form forced convection heat dissipation can significantly reduce the surface temperature of the thermocouple body 205, avoid performance degradation due to overheating, and ensure its continuous and stable operation in the high-temperature smelting environment. In addition, continuous high temperature will cause thermal stress to occur in the thermocouple body 205, leading to fatigue damage to the internal structure. Ventilation and heat dissipation can balance temperature distribution, reduce thermal stress accumulation, reduce the risk of component cracks or breakage, and extend the service life of the thermocouple body 205.

[0028] The cables connected by the thermocouple body 205 are all connected to the connecting section 1 206. The connecting section 1 206 summarizes the signals of all thermocouple bodies 205. The rotating structure 207 rotates the connecting section 1 206 and the connecting section 2 208 in series. The design of a two-section connecting line and a rotating structure 207 can significantly reduce the risk of the connecting line breaking and improve the reliability of the system. In addition, the use of the rotating structure 207 to connect the connecting section 1 206 and the connecting section 2 208 can simplify the installation process and reduce the difficulty of installation. At the same time, it is also convenient to adjust and optimize the connecting line during the equipment commissioning process. By dividing the connecting line into two sections and connecting them using the rotating structure 207, the curling and wear of the connecting line during the rotation of the converter body 101 can be effectively reduced, thereby extending the service life of the connecting line. The rotating structure 207 is provided between the connecting section 1 206 and the connecting section 2 208 to disperse the stress generated when the converter body 101 rotates, avoiding stress concentration at a certain point that may cause damage to the connecting line.

[0029] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A smelting converter furnace body capable of continuous temperature measurement, comprising a converter body (101), characterized in that: A plurality of air inlet and outlet ducts (103) are provided inside the converter body (101), a bridge plate (201) is provided on the side of the air inlet and outlet duct (103) away from the inside of the converter body (101), and three rows of thermocouple bodies (205) are provided on the side of the bridge plate (201) close to the air inlet and outlet duct (103), the first row of the thermocouple bodies (205) is located above the air inlet and outlet duct (103) at a distance of 18-22 cm from the center of the wind eye, the second row of the thermocouple bodies (205) is located above the air inlet and outlet duct (103) at a distance of 8-12 cm from the center of the wind eye, and the third row of the thermocouple bodies (205) is located 8-12 cm below the wind eye of the air inlet and outlet duct (103), and the thermocouple bodies (205) are used to monitor the furnace temperature of the converter body (101).

2. The smelting converter body capable of continuous temperature measurement according to claim 1, characterized in that: A through tube (102) is fixedly connected to the upper part of the interior of the converter body (101), and two arc-shaped plates (105) are symmetrically fixedly connected to the side of the through tube (102) away from the converter body (101). A through hole (104) is provided on one side of the converter body (101), and a flat groove (106) is provided on the bottom end of each arc-shaped plate (105) close to the air inlet and outlet duct (103).

3. The smelting converter body capable of continuous temperature measurement according to claim 2, characterized in that: Several bolts (107) are threadedly connected to the interior of the planar groove (106), and nuts (108) are threadedly connected to the exterior of the bolts (107). The nuts (108) are fitted to the outer surface of the planar groove (106).

4. The smelting converter body capable of continuous temperature measurement according to claim 3, characterized in that: The top end of the bridge plate (201) is fixedly connected to an arc-shaped fitting strip (202), and the side of the arc-shaped fitting strip (202) close to the air inlet and outlet duct (103) is fitted on the outer surface of the arc-shaped plate (105). A plurality of threaded holes (203) are provided through the surface of the arc-shaped fitting strip (202), and the number of the threaded holes (203) is the same as that of the bolts (107), and each of the bolts (107) is threadedly connected to the inside of a threaded hole (203).

5. The smelting converter body capable of continuous temperature measurement according to claim 4, characterized in that: The bridge plate (201) is provided with a plurality of heat dissipation openings (204) between the thermocouple bodies (205); a connecting section 1 (206) is provided on a side of the bridge plate (201) close to the through hole (104); the connecting section 1 (206) is inserted through the inside of the through hole (104); the connecting section 1 (206) is rotatably connected to a rotating structure (207) on a side away from the bridge plate (201); and the rotating structure (207) is rotatably connected to a connecting section 2 (208) on a side away from the connecting section 1 (206).

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