Integrated iron-mouth oxygen lance

Abstract

This utility model relates to an integrated oxygen lance, belonging to the technical field of blast furnace production equipment. It includes an integrated oxygen lance body, with a main valve installed internally in the middle. A voltmeter and an air inlet are also installed on the integrated oxygen lance body. A viewing hole is located at the center of the end of the integrated oxygen lance body, and a first viewing mirror is installed in the viewing hole. An oxygen lance periscope is also installed at the end of the integrated oxygen lance body, located around the first viewing mirror. The oxygen lance periscope is equipped with a camera and two adjustment knobs, which are threaded to the top and rear sides of the oxygen lance periscope, respectively, and both adjustment knobs are connected to the lens of the oxygen lance periscope. A second viewing mirror is installed at the end of the oxygen lance periscope. This utility model significantly improves the safety factor, enabling both on-site observation of the combustion status at the oxygen lance tip and remote observation, ensuring timely response based on the combustion status at the oxygen lance tip.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace production equipment technology, and in particular to an integrated taphole oxygen lance. Background Technology

[0002] In recent years, with increasing environmental pressure and fluctuating market conditions, blast furnace production has been intermittent, with the number of times the blast furnace has been started and stopped increasing, and the number of times the taphole oxygen lance has been used has also been increasing.

[0003] Traditional taphole oxygen lances consist of two sections, which are not only complex to operate but also have a low safety factor. Furthermore, traditional taphole oxygen lances only allow on-site observation of the combustion status at the tip of the lance via a sight glass installed at the end; the combustion status at the tip cannot be promptly relayed to the control center, potentially leading to a delayed response based on the combustion status. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides an integrated iron taphole oxygen lance. The technical solution of this utility model is as follows:

[0005] An integrated oxygen lance includes an integrated oxygen lance body, with a main valve installed inside the middle of the integrated oxygen lance body. A voltmeter and an air inlet are installed on the integrated oxygen lance body, with the voltmeter located behind the main valve and the air inlet behind the voltmeter. A viewing hole is opened at the middle of the end of the integrated oxygen lance body, and a first viewing mirror is detachably installed on the viewing hole. An oxygen lance periscope is also detachably installed at the end of the integrated oxygen lance body, located around the first viewing mirror. A camera and two adjustment knobs are installed on the oxygen lance periscope, which are threadedly connected to the top and rear sides of the oxygen lance periscope, respectively, and both adjustment knobs are connected to the lens of the oxygen lance periscope. A second viewing mirror is installed at the end of the oxygen lance periscope, and the second viewing mirror is located on the same horizontal plane as the first viewing mirror. The camera is electrically connected to a controller.

[0006] Optionally, a thermocouple is installed on the integrated oxygen lance body, the thermocouple is located in front of the main valve, and the thermocouple is electrically connected to the controller.

[0007] Optionally, a solenoid valve is installed near the end of the integrated oxygen lance body. The solenoid valve is located behind the air inlet and is electrically connected to the controller.

[0008] Optionally, the oxygen lance periscope includes a housing with a convex longitudinal section. Three evenly distributed locking bolts are threaded to the outer periphery of the large-diameter end of the housing. The housing is detachably connected to the end of the integrated oxygen lance body through the three locking bolts. Two adjustment knobs are threaded to the outer periphery of the small-diameter end of the housing, and the two adjustment knobs are located on the top and rear sides of the housing, respectively. A lens is movably installed inside the housing, and both adjustment knobs are threaded to the lens. A second viewing mirror is installed at the small-diameter end of the housing.

[0009] Optionally, the air inlet is fixedly connected to the integrated oxygen lance body via a quick connector.

[0010] All of the above optional technical solutions can be combined arbitrarily, and this utility model does not provide a detailed description of the structure after each combination.

[0011] The beneficial effects of this utility model through the above solution are as follows:

[0012] By setting up an integrated oxygen lance body, the safety factor is significantly improved compared to the combination of two oxygen lance sections; by setting up a first viewing mirror, the combustion status at the front of the oxygen lance can be observed on-site; by setting up an oxygen lance periscope, a camera, and a second viewing mirror, both on-site and remote observation of the combustion status at the front of the oxygen lance can be achieved, ensuring timely response based on the combustion status at the front of the oxygen lance.

[0013] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0015] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0016] like Figure 1As shown in the figure, an integrated oxygen lance provided by this utility model embodiment includes an integrated oxygen lance body 11. A main valve 2 is installed inside the middle of the integrated oxygen lance body 11. A voltmeter 3 and an air inlet 4 are installed on the integrated oxygen lance body 11. The voltmeter 3 is located behind the main valve 2, and the air inlet 4 is located behind the voltmeter 3. A viewing hole is opened in the middle of the end of the integrated oxygen lance body 11. A first viewing mirror 6 is detachably installed on the viewing hole. An oxygen lance periscope 7 is also detachably installed on the end of the integrated oxygen lance body 11. The oxygen lance periscope 7 is located around the first viewing mirror 6. A camera 8 and two adjustment knobs 10 are installed on the oxygen lance periscope 7. The two adjustment knobs 10 are threadedly connected to the top surface and the rear side surface of the oxygen lance periscope 7, respectively, and both adjustment knobs 10 are connected to the lens of the oxygen lance periscope 7. A second viewing mirror 9 is installed at the end of the oxygen lance periscope 7. The second viewing mirror 9 and the first viewing mirror 6 are located on the same horizontal plane. The camera 8 is electrically connected to the controller.

[0017] Specifically, when the main valve 2 is closed, the pressure of the gas entering the integrated oxygen lance body 11 can be determined by the pressure gauge 3; when the main valve 2 is open, the pressure inside the furnace can be determined by the pressure gauge 3.

[0018] In the initial state, i.e. without the oxygen lance periscope 7 installed, the furnace interior can be observed through the first viewing mirror 6. After the oxygen lance periscope 7, camera 8, and second viewing mirror 9 are installed, the furnace interior can be observed through the second viewing mirror 9, and the camera 8 can feed back the furnace interior situation to the controller in real time, realizing remote observation of the furnace interior situation, thereby facilitating remote response based on the combustion status at the oxygen lance front end.

[0019] Among them, voltmeter 3 is threadedly connected to the integrated oxygen lance body 11. Voltmeter 3 is a pressure gauge with an accuracy of 1.6, manufactured by Fuyang Automation Instrument Factory No. 2. The first viewing mirror 6 is threadedly connected to the integrated oxygen lance body 11. Camera 8 is threadedly connected to the oxygen lance periscope 7. Camera 8 is a blast furnace tuyeres camera from Beike Yili. The controller can be a PLC, microcontroller, etc.

[0020] In a further embodiment, a thermocouple 1 is installed on the integrated oxygen lance body 11. The thermocouple 1 is located in front of the main valve 2 and is electrically connected to the controller. Specifically, the thermocouple 1 is threadedly connected to the integrated oxygen lance body 11. The thermocouple 1 is a WRNK331 K type thermocouple. Through the thermocouple 1, the temperature at the front end of the oxygen lance can be determined, and thus the molten iron level at the front end can be determined, allowing the controller to determine the timing of iron tapping based on the temperature and molten iron level.

[0021] In a further embodiment, a solenoid valve 5 is installed near the end of the integrated oxygen lance body 11. The solenoid valve 5 is located behind the air inlet 4 and is electrically connected to the controller. Specifically, the solenoid valve 5 is threadedly connected to the integrated oxygen lance body 11. By setting the solenoid valve 5, it can be remotely opened or closed by the controller, and remote operation of the solenoid valve 5 can achieve the function of safe iron tapping.

[0022] In a further embodiment, the oxygen lance periscope 7 includes a housing with a convex longitudinal section. Three evenly distributed locking bolts are threaded onto the outer periphery of the large-diameter end of the housing. The housing is detachably connected to the end of the integrated oxygen lance body 11 via the three locking bolts. Two adjusting knobs 10 are threaded onto the outer periphery of the small-diameter end of the housing, and the two adjusting knobs 10 are located on the top and rear sides of the housing, respectively. A lens is movably installed inside the housing, and both adjusting knobs 10 are threaded onto the lens. A second viewing mirror 9 is threaded onto the small-diameter end of the housing. The two adjusting knobs 10 are used to adjust the position of the lens in the vertical and horizontal directions, respectively.

[0023] In a further embodiment, the air inlet 4 is fixedly connected to the integrated oxygen lance body 11 via a quick connector. This configuration allows for simple and convenient installation of the air inlet 4 on the integrated oxygen lance body 11, improving operational efficiency.

[0024] In use, the integrated oxygen lance body 11 is pre-embedded in the blast furnace taphole channel. The gas required for blast furnace ironmaking is introduced through the air inlet 4. After installation and ignition, the combustion of the oxygen lance front can be observed through the first viewing mirror 6. After the integrated oxygen lance body 11 is installed, the oxygen lance periscope 7 is installed on the outer edge of the first viewing mirror 6. The camera 8 is installed in the oxygen lance periscope 7 and the video signal is transmitted to the controller through the transmission cable. The lens of the oxygen lance periscope 7 is aligned with the front of the integrated oxygen lance body 11 by adjusting the knob 10. The combustion of the oxygen lance front can also be observed on site through the second viewing mirror 9.

[0025] Furthermore, when thermocouple 1 reaches the predetermined temperature, the controller closes solenoid valve 5, removes the oxygen lance periscope 7 and the first sight glass 6, and after confirming the surroundings are safe, the operator remotely opens solenoid valve 5 via the controller to begin blast furnace tapping. By setting solenoid valve 5 for remote operation, safe tapping can be achieved.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An integrated iron-mouth oxygen lance, characterized in that, The system includes an integrated oxygen lance body (11), with a main valve (2) installed inside the middle of the integrated oxygen lance body (11). A voltmeter (3) and an air inlet (4) are installed on the integrated oxygen lance body (11). The voltmeter (3) is located behind the main valve (2), and the air inlet (4) is located behind the voltmeter (3). A viewing hole is provided at the middle of the end of the integrated oxygen lance body (11), and a first viewing mirror (6) is detachably installed on the viewing hole. An oxygen lance periscope (7) can also be detachably installed at the end of the integrated oxygen lance body (11). The oxygen lance periscope (7) is located around the first viewing mirror (6). The oxygen lance periscope (7) is equipped with a camera (8) and two adjustment knobs (10). The two adjustment knobs (10) are threaded to the top and rear sides of the oxygen lance periscope (7) respectively, and both adjustment knobs (10) are connected to the lens of the oxygen lance periscope (7). The end of the oxygen lance periscope (7) is equipped with a second viewing mirror (9). The second viewing mirror (9) is located on the same horizontal plane as the first viewing mirror (6). The camera (8) is electrically connected to the controller.

2. The integrated iron-mouth oxygen lance according to claim 1, characterized in that, The thermocouple (1) is installed on the integrated oxygen lance body (11). The thermocouple (1) is located in front of the main valve (2) and is electrically connected to the controller.

3. The integrated iron-mouth oxygen lance according to claim 1 or 2, characterized in that, The integrated oxygen gun body (11) is equipped with a solenoid valve (5) near the end. The solenoid valve (5) is located behind the air inlet (4) and is electrically connected to the controller.

4. The integrated iron-mouth oxygen lance according to claim 1, characterized in that, The oxygen lance periscope (7) includes a housing with a convex longitudinal section. The outer periphery of the large-diameter end of the housing is threaded with three evenly distributed locking bolts. The housing is detachably connected to the end of the integrated oxygen lance body (11) through the three locking bolts. Two adjustment knobs (10) are threadedly connected to the outer periphery of the small-diameter end of the housing. The two adjustment knobs (10) are located on the top and rear sides of the housing, respectively. A lens is movably installed inside the housing. Both adjustment knobs (10) are threadedly connected to the lens. The second viewing mirror (9) is installed at the small-diameter end of the housing.

5. The integrated iron-mouth oxygen lance according to claim 1, characterized in that, The air inlet (4) is fixedly connected to the integrated oxygen gun body (11) via a quick connector.

Images