A portable leak detection and blockage device for metallurgical blowing systems

Abstract

The utility model belongs to the field of leak detection, especially a metallurgical gas blowing system portable leak detection and blockage measuring device, in view of the problem that the existing technology can only rely on production process personnel to check the production site when the gas blowing system abnormally feeds back, which easily leads to the safety problem of personnel injury, the present scheme is proposed, it includes DN50 pipeline section, the left end of DN50 pipeline section is connected with DN20 pipeline section, one end away from DN50 pipeline section of DN20 pipeline section is connected with quick -coupling, one end away from DN20 pipeline section of DN50 pipeline section is connected with ball valve, be equipped with battery on DN50 pipeline section, and the one side of battery is equipped with mass flowmeter, the utility model discloses through field research summary, and the invention portable leak detection and blockage measuring device is applied in the end of gas blowing system valve station when feeding back abnormally, and the outlet pressure, flow of detection system are detected through the method, and the specific situation of system blockage or leakage is judged, and the problem of gas blowing system blockage or gas leakage affecting production process quality is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of leak detection technology, and in particular to a portable leak detection and plugging detection device for a metallurgical gas blowing system. Background Technology

[0002] Steelmaking refers to controlling the carbon content (generally less than 2%), eliminating harmful elements such as P, S, O, and N, retaining or increasing beneficial elements such as Si, Mn, Ni, and Cr, and adjusting the proportions between these elements to obtain optimal performance. Steelmaking involves melting pig iron in a steelmaking furnace according to a specific process to obtain steel. Steel products include steel ingots, continuously cast billets, and various steel castings directly cast. Generally, the term "steel" refers to steel rolled into various steel products. Steel belongs to the ferrous metals category, but steel is not entirely synonymous with ferrous metals.

[0003] In steelmaking, leaks and blockages can lead to unstable gas supply, causing steel seepage and blockage of the permeable bricks used in bottom blowing systems such as ladle argon blowing and converter bottom blowing. This results in premature removal of the permeable bricks, affecting ladle turnover and service life. Furthermore, poor bottom blowing argon in smelting and refining processes negatively impacts slag formation and desulfurization, potentially causing backflow or casting machine shutdowns, disrupting production schedules, incurring costs, and even leading to quality issues. Current technical solutions rely on auditory detection to pinpoint leaks. Small leaks, coupled with ambient noise, are difficult to diagnose. Moreover, the lack of an open metal hose at the blowing system's end prevents pressure from reaching its maximum, resulting in only minor leaks. Furthermore, malfunctions in the blowing system require on-site inspection by production personnel, posing a significant safety risk. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where abnormal feedback from the gas blowing system can only be detected by production personnel on-site, which can easily lead to personnel injury and safety issues. Therefore, this invention proposes a portable leak detection and blockage testing device for metallurgical gas blowing systems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A portable leak detection and plugging test device for a metallurgical gas blowing system includes a DN50 pipe section. A DN20 pipe section is connected to the left end of the DN50 pipe section. A quick connector is connected to the end of the DN20 pipe section furthest from the DN50 pipe section. A ball valve is connected to the end of the DN50 pipe section furthest from the DN20 pipe section. A battery is mounted on the DN50 pipe section, and a mass flow meter is mounted on one side of the battery. The mass flow meter is used to detect the airtightness of the gas blowing system during operation. A first pipe is connected to the bottom of the mass flow meter, and the bottom of the first pipe is fixedly connected to the DN50 pipe section. A digital pressure gauge is mounted on the side of the mass flow meter furthest from the battery. The pressure of the gas blowing valve station system is detected by comparing the pressure measured by the digital pressure gauge. A second pipe is fixedly connected to the bottom of the digital pressure gauge, and the bottom of the second pipe is fixedly connected to the DN50 pipe section.

[0006] Preferably, the bottom of the battery is provided with a mounting bracket, and the end of the mounting bracket away from the battery 8 is fixed on the DN50 pipe section.

[0007] Preferably, the DN50 pipe section is symmetrically fitted with fixed supports, and the fixed supports are telescopic supports. The height, angle and position of the DN50 pipe section can be adjusted by using telescopic supports to make the DN50 pipe section horizontal and stable.

[0008] Preferably, a sealing ball valve is provided on the first pipeline and a sealing ball valve is provided on the second pipeline.

[0009] Preferably, the DN50 pipe section is symmetrically fixed with lifting rings, and the lifting rings are connected by the same strap.

[0010] Preferably, the battery is provided with an aviation connector on the side near the mass flow meter, and the mass flow meter and the battery are electrically connected through the aviation connector and wires, using the aviation connector to ensure power supply and signal transmission.

[0011] Preferably, the fixed bracket is fixed to the DN50 pipe section by clamps.

[0012] In this invention, a portable leak detection and blockage testing device for a metallurgical gas blowing system can quickly detect leaks and simultaneously address fault points when the gas permeability of the ladle is abnormal. This ensures stable gas blowing into the ladle, effectively agitating the molten steel, promoting uniformity of temperature and composition, improving the permeability efficiency and effectiveness of the permeable bricks, optimizing the steel refining process, reducing backflow and downtime accidents, and improving product quality. Simultaneously, it eliminates the uncertainty of online inspection of molten metal during production, preventing safety accidents. Based on field research and summarization, this invention provides a portable leak detection and blockage testing device that is applied at the end of the gas blowing system valve station when abnormalities are detected. The device measures the system outlet pressure and flow rate to determine the specific situation of blockage or leakage, effectively solving the problem of blockage or leakage in the gas blowing system affecting production process quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a portable leak detection and plugging detection device for a metallurgical gas blowing system proposed in this utility model.

[0014] In the diagram: 1. Quick coupling; 2. DN20 pipe section; 3. DN50 pipe section; 4. Fixed bracket; 5. Ball valve; 6. Mass flow meter; 7. Digital pressure gauge; 8. Battery; 9. Sealed ball valve one; 10. Sealed ball valve two; 11. Lifting ring; 12. Shoulder strap. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Example 1 Reference Figure 1A portable leak detection and plugging test device for a metallurgical gas blowing system includes a DN50 pipe section 3. A DN20 pipe section 2 is connected to the left end of the DN50 pipe section 3. A quick connector 1 is connected to the end of the DN20 pipe section away from the DN50 pipe section 3. A ball valve 5 is connected to the end of the DN50 pipe section 3 away from the DN20 pipe section 2. A battery 8 is installed on the DN50 pipe section 3, and a mass flow meter 6 is installed on one side of the battery 8. The mass flow meter 6 is required to be inserted and meet the instrument installation specifications. Its measuring range should be one-third greater than the design range, and its accuracy should be [not specified]. The flow meter used must be of a higher grade than that used in the air blowing valve station to prevent the detection process from exceeding the range, while ensuring detection accuracy and meeting comparison requirements. The bottom of the mass flow meter 6 is connected to a pipe, and the bottom of the pipe is fixedly connected to the DN50 pipe section 3. A digital pressure gauge 7 is provided on the side of the mass flow meter 6 away from the battery 8. The digital pressure gauge 7 is selected, and its range is greater than that of the system pressure to ensure that the measurement process does not exceed the range of the instrument, while ensuring detection accuracy. The bottom of the digital pressure gauge 7 is fixedly connected to a pipe, and the bottom of the pipe is fixedly connected to the DN50 pipe section 3.

[0017] In this utility model, the bottom of the battery 8 is provided with a mounting bracket, and the end of the mounting bracket away from the battery 8 is fixedly mounted on the DN50 pipe section 3.

[0018] In this utility model, a fixed bracket 4 is symmetrically fixedly sleeved on the DN50 pipe section 3, and the fixed bracket 4 is a telescopic bracket.

[0019] In this utility model, a sealing ball valve 9 is provided on the first pipe, and a sealing ball valve 10 is provided on the second pipe.

[0020] In this utility model, symmetrical lifting rings 11 are fixed on the DN50 pipe section 3, and the same strap 12 is provided between the lifting rings 11.

[0021] In this invention, the battery 8 is provided with an aviation connector on the side near the mass flow meter 6, and the mass flow meter 6 and the battery 8 are electrically connected through the aviation connector and wires.

[0022] In this utility model, the fixed bracket 4 is fixedly mounted on the DN50 pipe section 3 by a clamp.

[0023] In this invention, the device is connected to the air blowing system. After connection, the ball valve 5 of the device is closed, and the air blowing system's flow control output is started and stabilized. The terminal pressure value is detected by digital pressure gauge 7 and compared with the system pressure. The pressure display is monitored, and the difference between the pressure detected by the air blowing system and the leakage pressure difference is calculated. If a differential pressure exists, there is a leak, and on-site inspection of the leak point is required, such as the air blowing system valve station body, output pipeline, argon tube reel, etc. The leak amount can also be confirmed by the flow meter display value of the air blowing system valve station. Currently, based on experience, the leakage amount should not exceed 100 Nl / min, otherwise it will affect the air blowing effect and lead to quality accidents. In such cases, leak detection and treatment must be carried out.

[0024] The air blowing system may also experience blockages, such as blockages caused by slippage of the outlet ball valve or folding of the metal hose. This device can be used to detect these blockages in two ways while the air blowing system valve station is operating: First, with the ball valve 5 closed, observe the value displayed on the digital pressure gauge 7. If the pressure does not match the reading at the air blowing system valve station, a blockage exists and should be checked and rectified immediately. Second, by fully opening the ball valve 5, the air flow rate is measured using the mass flow meter 6 within the device and compared with the design flow rate. If the flow rate is less than the design flow rate, a blockage is detected and should be checked and rectified immediately.

[0025] The device designed in this scheme can be installed at the end of the gas blowing valve station via quick connector 1. If abnormal gas blowing effect still occurs after the device has been tested and put into operation, the connection pipes of the gas-using equipment such as the ladle and converter body should be checked for leakage or one-way valve failure, as well as the corrosion status of the permeable bricks, in order to ensure the stable operation of the system, improve product quality, and prevent safety accidents.

[0026] Example 2 A storage box is provided on one side of the DN50 pipe section, and buckles are provided at both ends of the shoulder strap 12. The buckles are movably mounted on the lifting ring 11. The storage box is used to store the shoulder strap 12. During use, the shoulder strap 12 can be removed by the buckles and stored in the storage box to avoid the shoulder strap 11 affecting the walking of the inspection personnel.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A portable leak detection and plugging test device for a metallurgical gas blowing system, comprising a DN50 pipe section (3), characterized in that, The left end of the DN50 pipe section (3) is connected to the DN20 pipe section (2). The end of the DN20 pipe section away from the DN50 pipe section (3) is connected to the quick connector (1). The end of the DN50 pipe section (3) away from the DN20 pipe section (2) is connected to the ball valve (5). The DN50 pipe section (3) is equipped with a battery (8), and a mass flow meter (6) is provided on one side of the battery (8). The bottom of the mass flow meter (6) is connected to a pipe (1), and the bottom of the pipe (1) is fixedly connected to the DN50 pipe section (3). The side of the mass flow meter (6) away from the battery (8) is equipped with a digital pressure gauge (7), and the bottom of the digital pressure gauge (7) is fixedly connected to a pipe (2), and the bottom of the pipe (2) is fixedly connected to the DN50 pipe section (3).

2. The portable leak detection and plugging detection device for a metallurgical gas blowing system according to claim 1, characterized in that, The bottom of the battery (8) is provided with a mounting bracket, and the end of the mounting bracket away from the battery (8) is fixed on the DN50 pipe section (3).

3. The portable leak detection and plugging detection device for a metallurgical gas blowing system according to claim 1, characterized in that, The DN50 pipe section (3) is symmetrically fitted with fixed brackets (4), and the fixed brackets (4) are telescopic brackets.

4. The portable leak detection and plugging detection device for a metallurgical gas blowing system according to claim 1, characterized in that, The first pipeline is equipped with a sealing ball valve (9), and the second pipeline is equipped with a sealing ball valve (10).

5. A portable leak detection and plugging test device for a metallurgical gas blowing system according to claim 1, characterized in that, The DN50 pipe section (3) is symmetrically fixed with lifting rings (11), and the same strap (12) is provided between the lifting rings (11).

6. A portable leak detection and plugging test device for a metallurgical gas blowing system according to claim 1, characterized in that, The battery (8) is provided with an aviation connector on the side near the mass flow meter (6), and the mass flow meter (6) and the battery (8) are electrically connected through the aviation connector and wires.

7. A portable leak detection and plugging test device for a metallurgical gas blowing system according to claim 3, characterized in that, The fixed bracket (4) is fixed on the DN50 pipe section (3) by clamps.

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