Steelmaking converter OG system nozzle detection device

Abstract

The utility model discloses a steelmaking converter OG system nozzle detection device, which comprises a water storage basin, a plurality of partition plates, a detection water pipe, a booster pump and a nozzle, the plurality of partition plates uniformly divide the water storage basin into a plurality of latticed partition cavities, a graduated scale is arranged in each partition cavity or scales are engraved on the inner wall of each partition cavity, and the detection water pipe is connected with the booster pump. The spray head downwards faces the middle of the water storage basin and sprays water into the water storage basin to form a conical water curtain, and a pressure regulating valve, a pressure gauge and a flow meter are mounted on the detection water pipe. According to the utility model, the depth of water accumulation in the partition cavities is read through the graduated scale or the scales of the partition cavities in the water storage basin, and the volume of water in each partition cavity can be calculated by combining the horizontal sectional area of the partition cavities, so that the volume of water accumulation in the whole water storage basin is calculated, and the flow of the spray head is calculated; and the performance trend of the nozzle is checked and detected according to a pressure regulating valve, a pressure gauge and a flow meter, namely the water curtain coverage area and the water quantity corresponding to the nozzle under different pressures and flows, so that the water spraying quantity of the nozzle after online is reasonably controlled.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical technology, specifically to a nozzle detection device for an OG system in a steelmaking converter. Background Technology

[0002] In the metallurgical industry, the quality of the nozzles in the OG (Oil Collector) system for environmental dust removal in steel plants directly affects the dust removal efficiency of converter flue gas. Inadequate fire suppression and cooling can lead to significant safety risks such as gas explosions. During converter smelting, a large amount of high-temperature, high-dust-content flue gas is generated. To reduce the dust content in the flue gas, it needs to pass through the OG system for dust removal, fire suppression, and cooling, ultimately purifying it into converter gas for use. The OG system mainly consists of a flue gas cooling system, a flue gas purification system, and other auxiliary equipment. The flue gas purification system includes a two-stage Venturi scrubber, a dehydrator, and elbows. After entering the OG system, the converter flue gas passes through a water curtain sprayed into the nozzles in the scrubber, rapidly cooling the flue gas temperature from 900-1000℃ to 70-75℃. Particulate dust in the flue gas aggregates and detaches upon contact with water, thus purifying and cooling the converter flue gas.

[0003] However, during production operation, the nozzles require periodic maintenance and replacement. Because there is no nozzle testing device offline, the water curtain area and spray volume of new nozzles cannot be guaranteed after they are put into operation. This can easily lead to inadequate flue gas cooling and insufficient dust removal, thus affecting gas recovery and potentially causing environmental incidents. Therefore, eliminating these impacts is an urgent problem to be solved. Utility Model Content

[0004] The purpose of this invention is to provide a nozzle detection device for a steelmaking converter OG system that can accurately detect the water spray volume and spray area of ​​the nozzle, ensuring the cooling and dust removal effects of the nozzle, and controlling water consumption based on the detection data to reduce production costs. This solves the problem mentioned in the background art that the water curtain area and water spray volume cannot be guaranteed after the nozzle is put into operation, thus affecting the gas recovery.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A nozzle detection device for an OG system in a steelmaking converter includes a water storage basin, baffles, a detection water pipe, a booster pump, and nozzles. The baffles evenly divide the water storage basin into several grid-like cavities. Each cavity is equipped with a scale or has graduations engraved on its inner wall. One end of the detection water pipe is positioned above the water storage basin, and one end of the detection water pipe is connected to the booster pump. The nozzle is connected to one end of the detection water pipe, and the nozzle points downward toward the center of the water storage basin, spraying water into the basin to form a conical water curtain. The detection water pipe is also equipped with a pressure regulating valve, a pressure gauge, and a flow meter.

[0007] Preferably, the top perimeter of the water storage basin is connected to a water-blocking frame.

[0008] Preferably, the water-blocking frame is cylindrical or funnel-shaped.

[0009] Preferably, the water storage basin is square in shape.

[0010] Preferably, the cavity is rectangular parallelepiped, and the horizontal cross-sectional area of ​​the plurality of cavities is equal.

[0011] Preferably, the adjacent partitions are sealed to each other.

[0012] Compared with existing technologies, the beneficial effects of this utility model are: it enables offline testing of nozzle performance, and can accurately detect the water volume and spray area of ​​the nozzle. Specifically, before the nozzle goes online, water is sprayed into the water storage basin from the nozzle within a preset time. The depth of water accumulation in the compartments is read using a ruler or the scale of the compartments within the water storage basin. Combined with the horizontal cross-sectional area of ​​the compartments, the volume of water in each compartment can be calculated, thus calculating the total volume of water in the entire water storage basin. From this, the water flow rate of the nozzle can be calculated. Furthermore, based on the pressure regulating valve, pressure gauge, and flow meter, the performance trend of the nozzle can be calculated and detected, i.e., the cone-shaped water curtain coverage area and water volume corresponding to the nozzle under different pressures and flow rates. This ensures that the water volume of the nozzle can be reasonably controlled after it goes online, ensuring the nozzle's cooling and dust removal effects. Simultaneously, it reduces the consumption costs of water resources and energy media, thereby reducing the overall production cost. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the nozzle detection device of the OG system in steelmaking converter of this utility model.

[0014] The markings in the image correspond to the following:

[0015] 1. Water storage basin; 2. Baffle plate; 3. Test water pipe; 4. Booster pump; 5. Sprinkler head; 6. Chamber; 7. Scale; 8. Conical water curtain; 9. Pressure regulating valve; 10. Pressure gauge; 11. Flow meter. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1A nozzle detection device for an OG system in a steelmaking converter includes a water storage basin 1, baffles 2, a detection water pipe 3, a booster pump 4, and nozzles 5. The baffles 2 evenly divide the water storage basin 1 into several grid-like cavities 6. Each cavity 6 is equipped with a scale 7 or has graduations engraved on its inner wall. One end of the detection water pipe 3 is positioned above the water storage basin 1, and one end is connected to the booster pump 4, which supplies water to the detection water pipe 3. The nozzles 5 are connected to the outlet end of the detection water pipe 3 and spray downwards towards the center of the water storage basin 1, forming a conical water curtain 8. The water storage basin 1 is used to collect the water sprayed by the nozzles 5.

[0018] The detection water pipe 3 is also equipped with a pressure regulating valve 9, a pressure gauge 10, and a flow meter 11. The pressure regulating valve 9 can adjust the flow rate in the detection water pipe 3 according to the set requirements. The pressure gauge 10 is used to detect the water pressure in the detection water pipe 3, and the flow meter 11 is used to measure the water flow rate in the detection water pipe 3.

[0019] During testing, water is sprayed from nozzle 5 into water storage basin 1 within a preset time. After the water is sprayed, the depth of water accumulation in the compartment 6 is read by using a ruler 7 or the scale of the compartment 6 inside the water storage basin 1. The volume of water in each compartment 6 can be calculated by combining the horizontal cross-sectional area of ​​the compartment 6. The total volume of water in the entire water storage basin 1 can be calculated based on the number of compartments 6. Thus, the water flow rate sprayed by nozzle 5 within the preset time can be calculated.

[0020] In this embodiment, the performance trend of the nozzle 5 can be calculated and detected based on the pressure regulating valve 9, pressure gauge 10 and flow meter 11, that is, the coverage area and water volume of the cone water curtain 8 corresponding to the nozzle 5 under different pressures and flow rates. This ensures that the spray volume of the nozzle 5 can be reasonably controlled after the nozzle 5 is put into operation, so as to ensure the cooling and dust removal effect of the nozzle 5. At the same time, it also reduces the consumption cost of water resources and energy media, thereby reducing the total production cost.

[0021] A water-blocking frame (not shown) is connected to the top perimeter of the water storage basin 1 to prevent the sprayed cone-shaped water curtain 8 from spraying outwards, ensuring that the entire cone-shaped water curtain 8 falls into the water storage basin 1, thereby improving detection accuracy. In this embodiment, the water-blocking frame is cylindrical or funnel-shaped to guide the water flow formed by the cone-shaped water curtain 8 to flow quickly into the water storage basin 1.

[0022] In this embodiment, the water storage basin 1 is square, which facilitates the division of the cavities 6 and the calculation of the cross-sectional area of ​​the cavities 6; the cavities 6 are cuboid in shape, and the horizontal cross-sectional areas of the cavities 6 are all equal. Adjacent partitions 2 are sealed to each other to prevent water from flowing between the cavities 6 and to avoid affecting the accuracy of the detection. Water penetration can be prevented by applying waterproof adhesive at the connection between adjacent partitions 2.

[0023] In summary, this utility model can perform performance and quality testing of the nozzle 5 offline, accurately measuring the water volume and spray area of ​​the nozzle 5. The test results determine whether it meets the requirements of the on-site production process, ensuring that the nozzle 5 can be used normally immediately after being put into production. This reduces debugging time after maintenance, lowers on-site maintenance labor intensity, and eliminates production, safety, and environmental incidents caused by replacing unqualified nozzles 5. Furthermore, it can test the water volume, spray coverage area, spray angle, water flow velocity, and other relevant performance parameters of the nozzle 5, and create a performance parameter table for optimal control of the production process after the nozzle 5 is put into production.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nozzle detection device for an OG system in a steelmaking converter, characterized in that: The device includes a water storage basin (1), partitions (2), a detection water pipe (3), a booster pump (4), and a nozzle (5). The partitions (2) evenly divide the water storage basin (1) into several grid-like cavities (6). Each cavity (6) is equipped with a scale (7) or has a scale engraved on its inner wall. One end of the outlet of the detection water pipe (3) is located above the water storage basin (1), and one end of the inlet of the detection water pipe (3) is connected to the booster pump (4). The nozzle (5) is connected to one end of the outlet of the detection water pipe (3), and the nozzle (5) sprays downward toward the middle of the water storage basin (1) and into the water storage basin (1) to form a conical water curtain (8). The detection water pipe (3) is also equipped with a pressure regulating valve (9), a pressure gauge (10), and a flow meter (11).

2. The nozzle detection device for the OG system of a steelmaking converter according to claim 1, characterized in that: The top perimeter of the water storage basin (1) is connected to a water-blocking frame.

3. The nozzle detection device for the OG system of a steelmaking converter according to claim 2, characterized in that: The water-blocking frame is cylindrical or funnel-shaped.

4. The nozzle detection device for the OG system of a steelmaking converter according to claim 1, characterized in that: The water storage basin (1) is square in shape.

5. The nozzle detection device for the OG system of a steelmaking converter according to claim 1, characterized in that: The cavity (6) is rectangular, and the horizontal cross-sectional area of ​​the cavities (6) is equal.

6. The nozzle detection device for the OG system of a steelmaking converter according to claim 5, characterized in that: The adjacent partitions (2) are sealed to each other.

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