Mud ramming quantity detection device for stokehole mud gun of blast furnace
By designing a mud shot mud detection device including a ruler and magnetostrictive displacement sensor in front of the blast furnace, the problem of mud beat quantity deviation caused by environmental and operator factors is solved, and accurate measurement of mud beat quantity and safe and stable plugging operation are achieved.
Patent Information
- Application Number
- CN202421799932.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-29
AI Technical Summary
In front of the blast furnace, due to the poor environment and the operator's vision, angle and experience factors, there is a deviation in the amount of mud shots, resulting in failure of the plugging of the mouth or difficulty in opening the next time, and even the risk of abnormal flow of molten iron in the cylinder.
A blast furnace mud shot mud detection device is designed, including a vertically arranged ruler and magnetostrictive displacement sensor. The ruler pointer is driven to move through the mud bubble piston device, driving the magnetic ring support and magnetic ring to move along the guide groove, so that the displacement sensor detects the displacement of the magnetic ring, thereby accurately measuring the mud shot.
Through this device, the measurement accuracy of the amount of mud is improved, reducing the deviation of mud is caused by the environment and the subjective factors of the operator, and avoiding risks such as failure to block the mouth or difficulty in opening the mouth.
Smart Images
Figure CN222961448U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a measuring device for the mud injection amount of a mud gun in front of a blast furnace, belonging to the technical field of iron-making equipment. Background Art
[0002] The temperature in front of the blast furnace is high and the environment is poor. Especially when the tuyere needs to be blocked by a mud gun, iron slag and flue gas are ejected from the iron notch, and the visibility on site is low. The operators in front of the furnace estimate the mud injection amount by looking at the mechanical scale of the mud gun. Due to factors such as the eyesight of the operators, different observation angles, different on-site visibilities, and the experience of the operators, there will be deviations in mud injection by different operators under the same conditions. If the mud injection amount is too small and the plugging fails, it will lead to the risk of burning the mud gun head and flushing the iron notch to cause the molten iron to fall to the ground; if the mud injection amount is too large, it will cause difficulty in opening the next time, molten iron splashing, and in severe cases, abnormal flow of molten iron in the hearth. Content of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a measuring device for the mud injection amount of a mud gun in front of a blast furnace aiming at the above-mentioned prior art, accurately measuring the mud injection amount of the mud gun, and reducing the deviation of the mud injection amount caused by environmental and operator subjective factors.
[0004] The technical solution adopted by the utility model to solve the above problems is: a measuring device for the mud injection amount of a mud gun in front of a blast furnace, including a vertically arranged scale, a top plate is arranged at the top of the scale, a bottom plate is arranged at the bottom of the scale, the bottom plate and the top plate are arranged in parallel, magnetic ring track mounting plates are respectively arranged on the sides of the bottom plate and the top plate, a magnetic ring track is arranged between the two magnetic ring track mounting plates, a magnetic ring bracket is horizontally penetrated through the magnetic ring track, one end of the magnetic ring bracket is vertically fixed on the scale pointer, a magnetic ring mounting frame is arranged at the other end of the magnetic ring bracket, and a magnetic ring is arranged on the magnetic ring mounting frame; a sensor mounting plate is arranged on the top plate, a sensor mounting bracket is arranged on the sensor mounting plate, a displacement sensor is arranged on the sensor mounting bracket, and the measuring rod of the displacement sensor penetrates through the center of the magnetic ring.
[0005] The magnetic ring bracket includes a first bracket and a second bracket, a vertically arranged guide groove is opened on the magnetic ring track, the first bracket penetrates through the guide groove, the second brackets are respectively arranged at both ends of the first bracket, and the first bracket and the second bracket are perpendicular to each other to form an I-shaped.
[0006] The displacement sensor is a magnetostrictive displacement sensor.
[0007] There is also a cooling mechanism, which includes a cooling protective cover. The cooling protective cover covers the magnetic ring track. One end of the cooling protective cover is fixed to the top plate, and the other end is fixed to the bottom plate, so that the displacement sensor is arranged inside the cooling protective cover. A compressed air pipeline is connected to the cooling protective cover, and a solenoid valve is arranged on the compressed air pipeline. When the solenoid valve is opened, the compressed air pipeline is conducted; when the solenoid valve is closed, the compressed air pipeline is cut off.
[0008] A temperature-measuring thermal resistor is arranged inside the cooling protective cover, and the temperature-measuring thermal resistor is signal-connected to the solenoid valve.
[0009] Compared with the prior art, the advantages of the present invention are as follows: for a mud injection amount detection device of a blast furnace front mud gun, during mud injection, the mud gun piston device drives the scale pointer to move, driving the magnetic ring bracket and the magnetic ring to move along the guide groove, so that the displacement sensor detects the displacement amount of the magnetic ring, avoiding the shaking of the magnetic ring, improving the measurement accuracy, and reducing the deviation of the mud injection amount caused by environmental and operator subjective factors. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of a mud injection amount detection device of a blast furnace front mud gun according to an embodiment of the present invention (without installing a displacement sensor);
[0011] Figure 2 is Figure 1 a side view of;
[0012] Figure 3 It is a schematic diagram of the magnetic ring track;
[0013] Figure 4 It is a schematic diagram of the magnetic ring bracket, the scale pointer and the magnetic ring mounting frame;
[0014] Figure 5 It is a side view of a mud injection amount detection device of a blast furnace front mud gun according to an embodiment of the present invention (with a displacement sensor);
[0015] Figure 6 It is a schematic diagram of a mud injection amount detection device of a blast furnace front mud gun according to an embodiment of the present invention (installed with a cooling device);
[0016] In the figure, 1 is the bottom plate, 2 is the scale pointer, 3 is the scale, 4 is the top plate, 5 is the magnetic ring track mounting plate, 6 is the magnetic ring track, 7 is the magnetic ring bracket, 8 is the magnetic ring, 9 is the sensor mounting plate, 10 is the sensor mounting bracket, 11 is the displacement sensor, 12 is the cooling protective cover, 13 is the temperature-measuring thermal resistor, 14 is the compressed air pipeline, 15 is the solenoid valve, and 16 is the magnetic ring mounting frame. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0018] like Figures 1-5 As shown, a device for detecting the amount of mud produced by a mud cannon in front of a blast furnace in this embodiment comprises a vertically arranged scale 3, on which a movable scale pointer 2 is provided. A top plate 4 is arranged on the top of the scale 3, a bottom plate 1 is arranged on the bottom of the scale 3, and the bottom plate 1 and the top plate 4 are arranged in parallel. Magnetic ring track mounting plates 5 are respectively arranged on the sides of the bottom plate 1 and the top plate 4, and a magnetic ring track 6 is arranged between the two magnetic ring track mounting plates 5. A vertically arranged guide groove is provided on the magnetic ring track 6, and a first bracket is passed through the guide groove. Second brackets are respectively arranged at both ends of the first bracket, and the second bracket is perpendicular to the first bracket to form an I-shaped magnetic ring bracket 7. A second bracket is fixed on the scale pointer 2, and a magnetic ring mounting frame 16 is arranged on the other second bracket, and a magnetic ring 8 is arranged on the magnetic ring mounting frame 16. A sensor mounting plate 9 arranged horizontally is arranged on the top plate 4, a sensor mounting bracket 10 is arranged on the sensor mounting plate 9, a displacement sensor 11 is arranged on the sensor mounting bracket 10, a measuring rod of the displacement sensor 11 is arranged in parallel with the guide groove, and the measuring rod of the displacement sensor 11 passes through the center of the magnetic ring 8, the displacement sensor 11 is connected to the controller signal, and the detection data of the displacement sensor 11 is fed back to the controller. The mud bubble piston device drives the scale pointer 2 to move up and down, drives the magnetic ring bracket 7 and the magnetic ring 8 to move up and down along the guide groove, and the displacement sensor 11 measures the displacement of the magnetic ring and feeds back to the controller, that is, the displacement of the mud bubble piston is obtained. It is known that the circular surface area of the mud gun cavity is S, and the volume change of the gun mud in the cavity is V=h*S. It is known that the density of the gun mud is p, and the amount of gun mud produced this time is M=p*V. It can be seen that the amount of mud produced can be quickly obtained by measuring the displacement of the magnetic ring with the displacement sensor.
[0019] The above displacement sensor is a magnetostrictive displacement sensor.
[0020] The mud bubble piston device is a commercially available product.
[0021] like Figure 6As shown, a cooling mechanism is also provided, which includes a cooling protective cover 12, and the cooling protective cover 12 is provided with a magnetic ring track 6. One end of the cooling protective cover 12 is fixed on the top plate 4, and the other end is fixed on the bottom plate 1, so that the displacement sensor 11 is arranged in the cooling protective cover 12. The top of the cooling protective cover 12 is connected to a compressed air pipeline 14, and a solenoid valve 15 is provided on the compressed air pipeline 14. When the solenoid valve 15 is opened, the compressed air pipeline 14 is conducted; when the solenoid valve 15 is closed, the compressed air pipeline 14 is cut off. A temperature measuring thermal resistor 13 is provided in the cooling protective cover 12, and the temperature measuring thermal resistor 13 is connected to the solenoid valve 16 signal. When the temperature measuring thermal resistor measures that the temperature of the inner cavity of the cooling protective cover is greater than 60°C, the solenoid valve is opened, so that the compressed air is passed into the inner cavity of the cooling protective cover through the compressed air pipeline to cool down the components in the inner cavity of the cooling protective cover, thereby increasing the service life. If the temperature of the inner cavity of the cooling protective cover measured by the temperature measuring thermal resistor is less than 45°C, the solenoid valve is closed, the compressed air pipeline is cut off, and compressed air is passed into the inner cavity of the cooling protective cover.
[0022] When mud is being pumped, the mud bubble piston device drives the scale pointer to move, driving the magnetic ring bracket and the magnetic ring to move along the guide groove, so that the displacement sensor detects the displacement of the magnetic ring, avoiding the shaking of the magnetic ring, improving the measurement accuracy, and reducing the deviation in the amount of mud being pumped due to environmental and operator subjective factors.
[0023] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims
1. A device for detecting the amount of mud produced by a mud gun in front of a blast furnace, characterized in that: It comprises a vertically arranged ruler, wherein a top plate is arranged on the top of the ruler, a bottom plate is arranged on the bottom of the ruler, the bottom plate and the top plate are arranged in parallel, magnetic ring track mounting plates are respectively arranged on the sides of the bottom plate and the top plate, a magnetic ring track is arranged between the two magnetic ring track mounting plates, a magnetic ring bracket is horizontally passed through the magnetic ring track, one end of the magnetic ring bracket is vertically fixed on the ruler pointer, a magnetic ring mounting frame is arranged on the other end of the magnetic ring bracket, and a magnetic ring is arranged on the magnetic ring mounting frame; a sensor mounting plate is arranged on the top plate, a sensor mounting bracket is arranged on the sensor mounting plate, a displacement sensor is arranged on the sensor mounting bracket, and a measuring rod of the displacement sensor passes through the center of the magnetic ring.
2. A blast furnace front mud gun mud quantity detection device according to claim 1, characterized in that: The magnetic ring bracket includes a first bracket and a second bracket. A vertically arranged guide groove is provided on the magnetic ring track. The first bracket passes through the guide groove. Second brackets are respectively arranged at both ends of the first bracket. The first bracket and the second bracket are perpendicular to each other to form an I-shape.
3. A device for detecting the amount of mud produced by a mud gun in front of a blast furnace according to claim 1, characterized in that: The displacement sensor is a magnetostrictive displacement sensor.
4. A device for detecting the amount of mud produced by a mud gun in front of a blast furnace according to claim 1, characterized in that: A cooling mechanism is also provided, which includes a cooling protective cover, the cooling protective cover is provided with a magnetic ring track, one end of the cooling protective cover is fixed to the top plate, and the other end is fixed to the bottom plate, so that the displacement sensor is arranged in the cooling protective cover, and the cooling protective cover is connected to a compressed air pipeline, and a solenoid valve is provided on the compressed air pipeline. When the solenoid valve is opened, the compressed air pipeline is connected; when the solenoid valve is closed, the compressed air pipeline is cut off.
5. A device for detecting the amount of mud produced by a mud cannon in front of a blast furnace according to claim 4, characterized in that: A temperature measuring thermal resistor is arranged in the cooling protection cover, and the temperature measuring thermal resistor is connected with the electromagnetic valve signal.