Equipment for improving smoke sealing strength of oxygen lance opening of converter

Abstract

The utility model relates to equipment for improving the smoke sealing strength of an oxygen lance muzzle of a converter, and belongs to the technical field of converter equipment in the metallurgical industry. According to the technical scheme, an up-down moving mechanism and a left-right moving mechanism are arranged on a rack (3), and a first servo motor (4) drives a sealing plug (2) to move up and down through a first transmission chain (6); the second servo motor (7) drives the worm wheel shaft (13) to rotate through the second transmission chain (9) and drives the sealing plug (2) to move left and right. The utility model has the beneficial effects that the sealing plug is adjusted up and down and left and right to be matched with the sealing seat, so that the flue gas sealing effect of the oxygen lance mouth of the converter can be improved, the flue gas leakage is reduced, the environment is protected, the service life of equipment is prolonged, the operation and maintenance are convenient, and the steelmaking efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a device for improving the sealing strength of converter oxygen lance fume, belonging to the technical field of steelmaking equipment. Background Art

[0002] During the process of blowing and decarburization, the converter produces a large amount of high-temperature flue gas and dust containing CO combustible gas. The commonly used converter oxygen lance nitrogen sealing device is a structure of a nitrogen sealing seat and a nitrogen sealing plug, using nitrogen as a medium to seal the oxygen lance, such as the Chinese patent CN 2022114027288, which is named "a converter oxygen lance mouth nitrogen sealing device", etc., and its structure is: an oxygen lance is installed in the oxygen lance mouth of the converter, and a nitrogen sealing plug is mounted on the oxygen lance. The oxygen lance is installed on the upper frame and moves up and down. A nitrogen sealing seat is provided between the nitrogen sealing plug and the oxygen lance mouth, and the nitrogen sealing seat is connected to the nitrogen pipe, and a valve is provided on the nitrogen pipe. However, when the oxygen lance nitrogen sealing plug and the nitrogen sealing seat are not tightly matched, it is easy to cause the oxygen lance nitrogen sealing failure (nitrogen flow channel is not smooth or process pressure loss), which causes the converter flue gas to leak out in severe cases, causing environmental pollution and affecting steelmaking efficiency. Therefore, how to improve the flue gas sealing effect of the converter oxygen lance mouth has always been a technical problem to be solved in the field of steelmaking. Utility Model Content

[0003] The purpose of the utility model is to provide a device for improving the sealing strength of the flue gas at the oxygen lance of the converter. By adjusting the sealing plug and the sealing seat up, down, left and right, the sealing effect of the flue gas at the oxygen lance of the converter can be improved, flue gas leakage can be reduced, the environment can be protected, the service life of the equipment can be increased, operation and maintenance can be facilitated, the steelmaking efficiency can be improved, and the above-mentioned technical problems existing in the prior art can be solved.

[0004] The technical solution of this utility model is:

[0005] A device for improving the fume sealing strength of the oxygen gun mouth of a converter, wherein an oxygen gun is installed in the oxygen gun mouth of the converter, a nitrogen sealing plug is mounted on the oxygen gun, the oxygen gun is installed on an upper frame and moves up and down, a nitrogen sealing seat is arranged between the nitrogen sealing plug and the oxygen gun mouth, the nitrogen sealing seat is connected to a nitrogen pipe, a valve is arranged on the nitrogen pipe, an up and down moving mechanism and a left and right moving mechanism are arranged on the frame, the up and down moving mechanism comprises a servo motor, a transmission wheel and a transmission chain, a transmission wheel is arranged on the output shaft of the servo motor, a lower end of a transmission chain matched on the transmission wheel is fixed on the sealing plug, Servo motor 1 drives the sealing plug to move up and down through transmission chain 1; the left and right moving mechanism includes servo motor 2, transmission wheel 2, worm, worm wheel, worm wheel shaft, transmission wheel 3 and transmission chain 2. The output shaft of servo motor 2 is provided with transmission wheel 2. The sealing plug is provided with a transversely arranged worm, the worm matches the worm wheel, the worm wheel shaft of the worm wheel is arranged parallel to the worm, and the end of the worm wheel shaft is provided with transmission wheel 3. The transmission wheel 3 is connected to the transmission wheel 2 through transmission chain 2. Servo motor 2 drives the worm wheel shaft to rotate through transmission chain 2, driving the sealing plug to move left and right. The up, down, left and right positions of the sealing plug are adjusted through the up and down moving mechanism and the left and right moving mechanism, so that the sealing plug is completely matched with the sealing seat, and the flue gas sealing effect of the converter oxygen gun mouth is improved.

[0006] Furthermore, the anchor point between the transmission chain 1 and the sealing plug is located on the upper surface of the sealing plug; and the worm is transversely installed on the side of the sealing plug.

[0007] Furthermore, there are more than two sets of up-and-down moving mechanisms, and the transmission chains of all the up-and-down moving mechanisms are fixed on the same upper surface of the sealing plug, thereby improving the stability of the up-and-down movement of the sealing plug.

[0008] Furthermore, the servo motor 2, transmission wheel 2, transmission wheel 3 and transmission chain 2 of the left and right moving mechanism are each in two sets, symmetrically arranged on both sides of the oxygen gun, and the two transmission wheels 3 are respectively installed at both ends of the same worm gear shaft.

[0009] Furthermore, two worm wheels are arranged on the worm shaft, and two sections of worm threads matching the two worm wheels are arranged on the worm respectively, so as to improve the stability of the left and right movement of the sealing plug.

[0010] The beneficial effects of the utility model are as follows: by adjusting the sealing plug and the sealing seat up, down, left and right, the flue gas sealing effect of the converter oxygen gun mouth can be improved, flue gas leakage can be reduced, the environment can be protected, the service life of the equipment can be prolonged, operation and maintenance can be facilitated, and steelmaking efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the sealing plug and sealing seat structure of an embodiment of the utility model;

[0012] Figure 2 This is a schematic diagram of the up and down moving mechanism of the embodiment of the utility model;

[0013] Figure 3 This is a schematic diagram of the left-right moving structure of an embodiment of the utility model;

[0014] In the figure: sealing seat 1, sealing plug 2, frame 3, servo motor 1 4, transmission wheel 1 5, transmission chain 1 6, servo motor 2 7, transmission wheel 2 8, transmission chain 2 9, transmission wheel 3 10, worm 11, worm wheel 12, worm wheel shaft 13, worm thread 14, anchor point 15, oxygen gun muzzle 16, oxygen gun 17, nitrogen pipe 18, valve 19. DETAILED DESCRIPTION

[0015] The present invention will be further described below through embodiments in conjunction with the accompanying drawings.

[0016] Refer to the attached Figure 1-3 The present embodiment provides a device for improving the sealing strength of flue gas at the oxygen gun mouth of a converter. An oxygen gun 17 is installed in the oxygen gun mouth 16 of the converter. A nitrogen sealing plug 2 is mounted on the oxygen gun 17. The oxygen gun 17 is installed on the upper frame 3 and moves up and down. A nitrogen sealing seat 1 is provided between the nitrogen sealing plug 2 and the oxygen gun mouth 16. The nitrogen sealing seat 1 is connected to a nitrogen pipe 18. A valve 19 is provided on the nitrogen pipe 18. An up and down moving mechanism and a left and right moving mechanism are provided on the frame 3. The up and down moving mechanism includes a servo motor 4, a transmission wheel 5 and a transmission chain 6. The output shaft of the servo motor 4 is provided with a transmission wheel 5. The lower end of the transmission chain 6 matched with the transmission wheel 5 is fixed on the sealing plug 2. The servo motor 4 is provided with a transmission wheel 5. The transmission wheel 5 is provided with a transmission wheel 6. The lower end of the transmission chain 6 matched with the transmission wheel 5 is fixed on the sealing plug 2. The motor 14 drives the sealing plug 2 to move up and down through the transmission chain 16; the left and right moving mechanism includes a servo motor 27, a transmission wheel 28, a worm 11, a worm wheel 12, a worm wheel shaft 13, a transmission wheel 310 and a transmission chain 29. The output shaft of the servo motor 27 is provided with a transmission wheel 28. The sealing plug 2 is provided with a transversely arranged worm 11, the worm 11 matches the worm wheel 12, the worm wheel shaft 13 of the worm wheel 12 is arranged parallel to the worm 11, and the end of the worm wheel shaft 13 is provided with a transmission wheel 310. The transmission wheel 310 is connected to the transmission wheel 28 through the transmission chain 29. The servo motor 27 drives the worm wheel shaft 13 to rotate through the transmission chain 29, driving the sealing plug 2 to move left and right. The up and down, left and right positions of the sealing plug 2 are adjusted by the up and down moving mechanism and the left and right moving mechanism, so that the sealing plug 2 is completely matched with the sealing seat 1, and the flue gas sealing effect of the converter oxygen gun mouth is improved.

[0017] The anchor point 15 between the transmission chain 6 and the sealing plug 2 is located on the upper surface of the sealing plug 2; the worm 11 is transversely installed on the side of the sealing plug 2.

[0018] Refer to the attached Figure 2 There are more than two sets of up and down moving mechanisms, and the transmission chains of all the up and down moving mechanisms are fixed on the same upper surface of the sealing plug 2, thereby improving the stability of the up and down movement of the sealing plug 2.

[0019] Refer to the attached Figure 3 The servo motor 2 7, transmission wheel 2 8, transmission wheel 3 10 and transmission chain 2 9 of the left and right moving mechanism are two sets, which are symmetrically arranged on both sides of the oxygen gun, and the two transmission wheels 3 are respectively installed at both ends of the same worm gear shaft 13.

[0020] Refer to the attached Figure 3 Two worm wheels 12 are arranged on the worm wheel shaft 13, and two sections of worm threads 14 matching the two worm wheels 12 are arranged on the worm 11, so as to improve the stability of the sealing plug 2 moving left and right.

[0021] The utility model is also provided with a well-known and commonly used control system, which automatically controls the up and down moving mechanism and the left and right moving mechanism to adjust the up and down and left and right positions of the sealing plug 2 according to the relative position relationship between the sealing plug 2 and the sealing seat 1, so that the sealing plug 2 and the sealing seat 1 are completely matched.

[0022] The sealing plug 2 and the sealing seat 1 are made of high temperature resistant and corrosion resistant materials, such as ceramic or graphite, to adapt to the harsh environment in the steelmaking process. The control system adopts PLC control, which can realize automatic control and remote control, adjust the sealing gap, and the operator can monitor and operate the equipment remotely at a place far away from the steelmaking site, thereby improving the safety and convenience of operation and facilitating operation and maintenance. The moving speed of the sealing plug 2 is adjustable to meet the sealing requirements under different process conditions to achieve the best sealing effect.

Claims

1. A device for improving the sealing strength of flue gas at the oxygen gun mouth of a converter, wherein an oxygen gun (17) is installed in the oxygen gun mouth (16) of the converter, a sealing plug (2) is mounted on the oxygen gun (17), the oxygen gun (17) is installed on an upper frame (3) and moves up and down, a sealing seat (1) is provided between the sealing plug (2) and the oxygen gun mouth (16), the sealing seat (1) is connected to a nitrogen pipe (18), and a valve (19) is provided on the nitrogen pipe (18), wherein: The frame (3) is provided with an up-and-down moving mechanism and a left-and-right moving mechanism. The up-and-down moving mechanism comprises a servo motor (4), a transmission wheel (5) and a transmission chain (6). The output shaft of the servo motor (4) is provided with a transmission wheel (5). The lower end of a transmission chain (6) matched with the transmission wheel (5) is fixed on the sealing plug (2). The servo motor (4) drives the sealing plug (2) to move up and down through the transmission chain (6). The left-and-right moving mechanism comprises a servo motor (7), a transmission wheel (8), a worm (11), a worm wheel (12), a worm wheel shaft (13), a transmission A wheel three (10) and a transmission chain two (9), a transmission wheel two (8) is arranged on the output shaft of the servo motor two (7), a worm (11) arranged transversely is arranged on the sealing plug (2), the worm (11) matches the worm wheel (12), a worm wheel shaft (13) of the worm wheel (12) is arranged parallel to the worm (11), a transmission wheel three (10) is arranged at the end of the worm wheel shaft (13), the transmission wheel three (10) and the transmission wheel two (8) are connected by a transmission chain two (9), the servo motor two (7) drives the worm wheel shaft (13) to rotate through the transmission chain two (9), and drives the sealing plug (2) to move left and right.

2. The device for improving the fume sealing strength of the oxygen lance of a converter according to claim 1, characterized in that: The anchor point (15) between the transmission chain 1 (6) and the sealing plug (2) is located on the upper surface of the sealing plug (2); and the worm (11) is transversely mounted on the side of the sealing plug (2).

3. The device for improving the fume sealing strength of the oxygen lance of a converter according to claim 2, characterized in that: The number of the up-and-down moving mechanisms is more than two sets, and the transmission chains of all the up-and-down moving mechanisms are fixed on the upper surface of the same sealing plug (2).

4. The device for improving the fume sealing strength of the oxygen lance of a converter according to claim 1 or 2, characterized in that: The servo motor 2 (7), transmission wheel 2 (8), transmission wheel 3 (10) and transmission chain 2 (9) of the left-right moving mechanism are each in two sets, symmetrically arranged on both sides of the oxygen gun, and the two transmission wheels 3 are respectively mounted on the two ends of the same worm gear shaft (13).

5. The device for improving the fume sealing strength of the oxygen lance of a converter according to claim 4, characterized in that: Two worm wheels (12) are arranged on the worm wheel shaft (13), and two sections of worm threads (14) matching the two worm wheels (12) are respectively arranged on the worm (11).

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