Device for quickly checking installation quality of blast furnace tuyere belly pipe

Abstract

A device for rapidly inspecting the installation quality of a belly pipe of a blast-furnace tuyere is characterized by comprising an inspection pipe, a sealing cap in threaded connection with a tuyere plug valve on the blast-furnace tuyere is fixedly installed on the inspection pipe, an air source control valve is installed on the portion, on the side of the sealing cap, of the inspection pipe, and a rapid connector is installed at the other end of the air source control valve; the quick connector is connected with a high-pressure air source through an air conveying pipe. According to the device for rapidly detecting the installation quality of the blast-furnace tuyere belly pipe, the installation quality of the blast-furnace tuyere belly pipe is rapidly and accurately detected through unique design and technical characteristics. The device not only improves the detection efficiency, but also ensures the accuracy and safety of the detection result, and provides powerful guarantee for the normal operation of the blast furnace and the safety of operators. Meanwhile, the device has wide popularization and application values due to the simple and feasible operation method and low cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of iron and steel smelting, and particularly relates to a device for quickly inspecting the installation quality of the tuyere direct blowing pipe of a blast furnace. Background Art

[0002] In the process of iron and steel smelting, as the core equipment, the operation efficiency and stability of the blast furnace are directly related to the quality and output of iron and steel production. As a key component for the normal operation of the blast furnace, the blast furnace air supply device undertakes the important task of conveying air volume into the blast furnace. The sealing performance of the air supply device is crucial for maintaining the stability of the blast furnace air volume, ensuring production efficiency, and guaranteeing the safety of operating personnel.

[0003] Traditionally, after replacing the air supply device during the blast furnace shutdown, the tightness of the air supply device is usually roughly judged by experience or the five senses (vision, hearing, smell, touch, and taste). However, this judgment method has many limitations. Since it is difficult to directly observe the fitting situation between the tuyere small sleeve and the spherical surface of the direct blowing pipe with the naked eye, it is very difficult to accurately judge whether they are completely fitted. In addition, various other factors (such as installation errors, material wear, temperature changes, etc.) may also lead to inaccurate judgment results.

[0004] This inaccurate judgment often leads to problems such as air leakage and gas leakage after the air supply device starts to supply air. Air leakage not only affects the stability of the blast furnace air volume and reduces production efficiency, but also may pose a serious threat to the health of operating personnel, such as gas poisoning. In severe cases, air leakage will cause the tuyere to be unable to spray coal normally, thereby affecting the smooth operation of the blast furnace and various production indicators. Even more seriously, air leakage may also cause the blast furnace to burn through or be forced to shut down for a second time, thus having a great impact on the stability and continuity of blast furnace production.

[0005] In view of the various deficiencies of the traditional inspection method, the utility model aims to provide a device for quickly inspecting the installation quality of the tuyere direct blowing pipe of a blast furnace, which can effectively inspect whether the contact surface between the tuyere small sleeve and the direct blowing pipe is installed and fitted. Through the device for quickly inspecting the installation quality of the tuyere direct blowing pipe of a blast furnace, the non-fitting situation can be discovered and processed in time, thereby avoiding problems such as gas leakage after air supply and ensuring the stable operation of the blast furnace and the safety of operating personnel. Summary of the Utility Model

[0006] Aiming at the problems existing in the prior art, the utility model provides a device for quickly inspecting the installation quality of the tuyere direct blowing pipe of a blast furnace.

[0007] The present utility model is implemented as follows. A device for quickly inspecting the installation quality of the direct blowing pipe of a blast furnace tuyere is characterized in that it includes an inspection pipe. A sealing cap threadedly connected to the tuyere cock valve on the blast furnace tuyere is fixedly installed on the inspection pipe. An air source control valve is installed on the inspection pipe on the side of the sealing cap, and a quick connector is installed at the other end of the air source control valve. The quick connector is connected to a high-pressure air source through an air delivery pipe.

[0008] Preferably, a force application part or a clamping part is provided on the outer circumference of the sealing cap.

[0009] Preferably, a handle is installed on the inspection pipe on the side of the air source control valve.

[0010] Advantages and technical effects of the present utility model: The device for quickly inspecting the installation quality of the direct blowing pipe of a blast furnace tuyere of the present utility model realizes efficient and accurate detection through ingenious design. The main body of the device is an inspection pipe, which can be easily inserted into the direct blowing pipe for airtightness detection; the sealing cap is threadedly connected to ensure no gas leakage during the detection process, guaranteeing the accuracy and safety of the detection, and at the same time facilitating quick installation and disassembly. The setting of the air source control valve and the quick connector simplifies the connection of the device, improves the operation efficiency, and ensures the stable transmission of high-pressure gas. When in use, coal ash is blown into the direct blowing pipe through high-pressure gas to visually judge the airtightness. The design of the force application part or the clamping part on the outer circumference of the sealing cap improves the operation convenience and ensures a tight connection. The transparent glass tube at the end of the inspection pipe enables the operator to visually observe the entry of fly ash, ensuring the reliability of the detection and facilitating timely handling of blockage problems. In summary, the device of the present utility model not only improves the detection efficiency and accuracy, but also guarantees the normal operation of the blast furnace and the safety of the operators. Its simple operation and low cost make it have wide popularization and application value. Description of the Drawings

[0011] Figure 1 is the structural schematic diagram of Embodiment 1 of the present utility model;

[0012] Figure 2 is the structural schematic diagram of Embodiment 2 of the present utility model.

[0013] In the figure, 1, inspection pipe; 2, sealing cap; 2-1, force application part; 3, air source control valve; 4, quick connector; 5, handle. Detailed Embodiments

[0014] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further details the present utility model in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0015] Embodiment 1, please refer to Figure 1A device for quickly inspecting the installation quality of a blast furnace tuyere direct blowing pipe is characterized by comprising an inspection pipe 1, which serves as the main body of the device and provides access to the blast furnace tuyere direct blowing pipe. Its design allows for easy insertion into the direct blowing pipe for leak testing. A sealing cap 2 is fixedly mounted on the inspection pipe and threadedly connected to the tuyere plug valve (an integral component of the tuyere, not shown) on the blast furnace tuyere. The design of the sealing cap ensures that high-pressure gas does not leak from the connection between the inspection pipe and the tuyere plug valve during testing, thereby ensuring accuracy and safety. The threaded connection makes the sealing cap easy to install and remove, facilitating quick on-site operation. An air source control valve 3 is mounted on the inspection pipe on the sealing cap side. The air source control valve is installed on the inspection pipe on this side of the sealing cap and precisely controls the flow of high-pressure gas. During testing, opening or closing the air source control valve allows for flexible control of the high-pressure gas flow, ensuring smooth testing. A quick connector 4 is mounted on the other end of the air source control valve for quick and convenient connection to the gas pipeline. This design simplifies the device's connection process, improves on-site operation efficiency, and ensures the stability of high-pressure gas during transmission. The quick connector connects to a high-pressure gas source via a gas pipe, providing the necessary high-pressure gas for testing. The use of a high-pressure gas source ensures sufficient gas pressure during testing to blow the coal ash into the direct blowpipe, thereby accurately determining the pipe's sealing properties.

[0016] When in use, pour a small amount of coal ash into the front end of the inspection tube, open the cock valve on the blast furnace tuyere, insert the inspection tube of this device into the newly replaced direct blowing pipe, then seal the connection of the sealing cap to the tuyere cock valve, open the gas source control valve to supply high-pressure gas, and blow the coal ash into the direct blowing pipe under the action of high-pressure gas. If no coal ash is ejected from the joint between the direct blowing pipe and the tuyere spherical surface, it proves that the sealing of the direct blowing pipe is good. If coal ash is ejected from the contact spherical surface between the direct blowing pipe and the tuyere, it is determined that the direct blowing pipe is not tightly sealed. At this time, the installation position of the air supply device can be adjusted and the above method can be used to test for leaks again.

[0017] Preferably, the outer circumference of the sealing cap is provided with a force-applying portion 2-1 or a clamping portion, which facilitates the operator to apply force or use tools to clamp when installing or removing the sealing cap, thereby improving the convenience and efficiency of the operation, ensuring a tight connection between the sealing cap and the air outlet plug valve, and further ensuring the accuracy of the detection.

[0018] Example 2, please refer to Figure 2 A handle 5 is installed on the inspection tube on the air source control valve side, which makes it easy for the operator to hold and move the entire device, improving the stability and comfort of operation. Especially when it is necessary to adjust the position of the device or perform multiple tests, the handle design makes the operation more convenient and improves work efficiency.

[0019] In summary, the device for quickly inspecting the installation quality of the blast furnace tuyere straight blowing pipe of the present utility model realizes the rapid and accurate detection of the installation quality of the blast furnace tuyere straight blowing pipe through its unique design and technical features. This device not only improves the detection efficiency, but also ensures the accuracy and safety of the detection results, providing a strong guarantee for the normal operation of the blast furnace and the safety of the operating personnel. At the same time, its simple and easy operation method and low cost also make this device have wide popularization and application value.

[0020] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A device for quickly inspecting the installation quality of the tuyere direct blowing pipe of a blast furnace, characterized in that: It includes an inspection pipe, on which a sealing cap threadedly connected to a tuyere cock valve on a blast furnace tuyere is fixedly installed. An air source control valve is installed on the inspection pipe on the side of the sealing cap, and a quick connector is installed at the other end of the air source control valve. The quick connector is connected to a high-pressure air source through an air delivery pipe.

2. The device for quickly inspecting the installation quality of the tuyere blowpipe of the blast furnace according to claim 1, characterized in that: The outer circumference of the sealing cap is provided with a force application part or a clamping part.

3. The device for quickly inspecting the installation quality of the tuyere blowpipe of a blast furnace according to claim 1, characterized in that: A handle is installed on the inspection pipe on the side of the air source control valve.

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