Quick-change device for oxygen lance of converter

Abstract

The utility model relates to a converter oxygen lance quick-change device, and belongs to the technical field of converter oxygen blowing steelmaking equipment. Comprising an oxygen lance and an oxygen lance trolley, the oxygen lance is arranged on the oxygen lance trolley, the oxygen lance comprises an oxygen lance body, and a spiral pipeline is connected to the oxygen lance body; an upper connecting plate is arranged on the oxygen lance body, and a spiral pipeline female end is arranged on the upper connecting plate; the oxygen lance trolley is provided with a first lower connecting plate and a second lower connecting plate, the first lower connecting plate is provided with a spiral pipeline male end, the first lower connecting plate and the second lower connecting plate are covered with the upper connecting plate, and the spiral pipeline female end is in butt joint with the spiral pipeline male end. And locking units are respectively arranged on the first lower connecting plate and the second lower connecting plate. The oxygen lance replacement time is shortened, the elevation, centrality and perpendicularity of the oxygen lance body can be conveniently adjusted, replacement is convenient and fast, the labor intensity of workers is greatly relieved, time and labor are saved, and the oxygen lance replacement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a converter oxygen lance quick-change device, belonging to the technical field of converter oxygen blowing steelmaking equipment. Background Art

[0002] The oxygen lance is one of the main equipment for modern converter oxygen blowing steelmaking. During the steelmaking process, the main function of the oxygen lance is to provide the converter with the oxygen necessary for smelting. Due to its extremely harsh working conditions, lance tip burning and other conditions often occur. The oxygen lance needs to be replaced in time to ensure the stability of converter production and the safety of smelting. Therefore, two independent transverse trolleys are usually used to switch the oxygen lance working position and the standby position.

[0003] The oxygen gun is installed on a lifting trolley, and oxygen and cooling water are injected into the gun body through a metal hose. At present, the connection method between the metal hose and the gun body is flange type. When changing the gun, the bolts on the flange need to be removed one by one, and the centering and vertical adjustment of the gun body are difficult and labor-intensive. It takes about 2 to 3 hours to complete the replacement. During this period, if the working oxygen gun fails, the converter will be directly shut down, which cannot meet the requirements of efficient and high-quality production of converter steelmaking. In addition, the change in the length of the gun body caused by the maintenance of the oxygen gun reduces the accuracy of the gun position when blowing oxygen. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a converter oxygen lance quick-change device for the above-mentioned prior art, which is convenient for quick replacement of the oxygen lance, saves time and effort, and ensures the accuracy of the oxygen lance position during oxygen blowing.

[0005] The technical solution adopted by the utility model to solve the above-mentioned problem is: a converter oxygen lance quick-change device, including an oxygen lance and an oxygen lance trolley, the oxygen lance is arranged on the oxygen lance trolley, the oxygen lance includes an oxygen lance body, and a spiral pipe is connected to the oxygen lance body; an upper connecting plate is provided on the oxygen lance body, and a female end of the spiral pipe is provided on the upper connecting plate; a lower connecting plate is provided on the oxygen lance trolley: a first lower connecting plate and a second lower connecting plate, a male end of the spiral pipe is provided on the first lower connecting plate, the upper connecting plate cover is arranged on the first lower connecting plate and the second lower connecting plate, the female end of the spiral pipe is connected to the male end of the spiral pipe, and the first lower connecting plate and the second lower connecting plate are respectively provided with locking units, and the locking units lock the upper connecting plate to the first lower connecting plate and the second lower connecting plate.

[0006] The spiral pipe includes a water outlet spiral pipe, a water inlet spiral pipe and an oxygen inlet spiral pipe; the female end of the spiral pipe includes a water outlet spiral pipe female end, a water inlet spiral pipe female end and an oxygen inlet spiral pipe female end, the female end of the water outlet spiral pipe is arranged at one end of the water outlet spiral pipe, the female end of the water inlet spiral pipe is arranged at one end of the water inlet spiral pipe, and the female end of the oxygen inlet spiral pipe is arranged at one end of the oxygen inlet spiral pipe; the male end of the spiral pipe includes a water outlet spiral pipe male end, a water inlet spiral pipe male end and an oxygen inlet spiral pipe male end.

[0007] An oxygen gun bracket is arranged on the oxygen gun trolley, the first lower connecting plate and the second lower connecting plate are arranged on both sides of the oxygen gun bracket, and the oxygen gun body is arranged on the oxygen gun bracket; an oxygen gun spiral disk is rotated on the oxygen gun body, and the pitch and rotation stroke of the oxygen gun spiral disk are the same as the pitch and rotation stroke of the male end of the spiral pipe.

[0008] The locking units respectively include symmetrically arranged locking bolts, the edges of the upper connecting plate are symmetrically provided with locking grooves, the locking bolts are passed through corresponding locking grooves, and locking pieces are respectively screwed on the tops of the bolts.

[0009] The locking groove is U-shaped.

[0010] A height adjustment mechanism is also provided, which adjusts the height of the upper connecting plate; the height adjustment mechanism includes vertically arranged screws, sleeves are screwed on the screws, a positioning hole is opened on the upper connecting plate, the diameter of the positioning hole matches the outer diameter of the screw, the screw passes through the positioning hole, and the axes of the two coincide; the sleeve is rotated, the sleeve moves along the screw, and the upper connecting plate is fine-tuned.

[0011] The length of the screw is greater than the length of the male end of the spiral pipe exposed to the upper surface of the lower connecting plate when the maximum rotation stroke is reached.

[0012] The male end of the spiral pipe and the female end of the spiral pipe are both distributed in a triangle.

[0013] Compared with the prior art, the utility model has the advantages of: a converter oxygen lance quick-change device, the oxygen lance replacement time is reduced from the original 2 to 3 hours to 20 to 30 minutes, and the elevation, centering and verticality of the oxygen lance body can be conveniently adjusted, and replacement is convenient, which greatly reduces the labor intensity of workers, saves time and effort, and improves the efficiency of oxygen lance replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of an oxygen lance in a converter oxygen lance quick-change device according to an embodiment of the utility model;

[0015] Figure 2 A top view of an oxygen lance in a converter oxygen lance quick-change device according to an embodiment of the utility model;

[0016] Figure 3 This is a front view of an oxygen lance trolley in a converter oxygen lance quick-change device according to an embodiment of the utility model;

[0017] Figure 4 This is a top view of an oxygen lance trolley in a converter oxygen lance quick-change device according to an embodiment of the utility model;

[0018] In the figure, 1 is a positioning hole, 2 is an upper connecting plate, 3 is an oxygen gun spiral disk, 4 is a first lower connecting plate, 5 is a female end of a water outlet spiral pipe, 6 is a female end of an oxygen inlet spiral pipe, 7 is a female end of a water inlet spiral pipe, 8 is a U-shaped locking groove, 9 is a locking bolt, 10 is an O-shaped sealing ring, 11 is a screw rod, 12 is a sleeve, 13 is a second lower connecting plate, 14 is a male end of a water inlet spiral pipe, 15 is a male end of an oxygen inlet spiral pipe, 16 is a male end of a water outlet spiral pipe, and 17 is an oxygen gun bracket. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] A converter oxygen lance quick-change device in this embodiment includes an oxygen lance and an oxygen lance trolley. The oxygen lance trolley is provided with an oxygen lance bracket 17, and the oxygen lance is provided on the oxygen lance bracket 17. Figure 1 , 2 As shown, the oxygen lance includes an oxygen lance body, and three spiral pipes are connected to the oxygen lance body: a water outlet spiral pipe, a water inlet spiral pipe, and an oxygen inlet spiral pipe. An upper connecting plate 2 is provided on the oxygen lance body, and spiral pipe female ends are mounted on the upper connecting plate 2: a water outlet spiral pipe female end 5, a water inlet spiral pipe female end 7, and an oxygen inlet spiral pipe female end 6. The water outlet spiral pipe female end 5 is arranged at one end of the water outlet spiral pipe, the water inlet spiral pipe female end 7 is arranged at one end of the water inlet spiral pipe, and the oxygen inlet spiral pipe female end 6 is arranged at one end of the oxygen inlet spiral pipe. Figure 3 , 4 As shown, the oxygen gun trolley is provided with a first lower connecting plate 4 and a second lower connecting plate 13, and the first lower connecting plate 4 and the second lower connecting plate 13 are provided on both sides of the oxygen gun bracket 17. The first lower connecting plate 4 is provided with three spiral pipe male ends: a water outlet spiral pipe male end 16, a water inlet spiral pipe male end 14 and an oxygen inlet spiral pipe male end 15. The first lower connecting plate 4 and the second lower connecting plate 13 are symmetrically provided with locking bolts 9, respectively, and the locking bolts 9 are arranged vertically. Four U-shaped locking grooves 8 are symmetrically provided on the edge of the upper connecting plate 2, the upper connecting plate 2 is covered on the first lower connecting plate 4, and the locking bolts 9 are penetrated into the corresponding U-shaped locking grooves 8, the female end 5 of the water outlet spiral pipe is connected to the male end 16 of the water outlet spiral pipe, the female end 7 of the water inlet spiral pipe is connected to the male end 14 of the water inlet spiral pipe, and the female end 7 of the oxygen inlet spiral pipe is connected to the male end 15 of the oxygen inlet spiral pipe. A locking piece is screwed onto the top of the locking bolt 9, so that the upper connecting plate is fixed to the first lower connecting plate and the second lower connecting plate, thereby achieving the fixation of the oxygen lance and the oxygen lance trolley.

[0021] O-type sealing rings 10 are respectively arranged on the male end of the water outlet spiral pipe, the male end of the water inlet spiral pipe and the male end of the oxygen inlet spiral pipe.

[0022] The first lower connecting plate 4 and the second lower connecting plate 13 are respectively provided with a height adjustment mechanism, wherein the height adjustment mechanism respectively comprises two vertically arranged screws 11, the length of the screw 11 being greater than the length of the male end of the spiral pipe exposed on the upper surface of the lower connecting plate at the maximum rotation stroke. Sleeves 12 are respectively screwed on the screws 11. Four positioning holes 1 are symmetrically provided on the upper connecting plate 2, and the diameter of the positioning holes 1 matches the screw 11. When the upper connecting plate cover is arranged on the first lower connecting plate, the screw is passed through the corresponding positioning hole, and the axes of the two coincide. When installing the oxygen gun, the screw can realize the docking of the female end of the spiral pipe and the male end of the spiral pipe and the centering of the oxygen gun body at one time. By rotating each sleeve, the sleeve can be rotated to any position of the screw. After the female end of the spiral pipe and the male end of the spiral pipe are docked, the sleeve is fine-tuned to make the upper connecting plate in a horizontal state to ensure the verticality of the spray gun body.

[0023] An oxygen lance spiral disk 3 is installed at one end of the oxygen lance body. The pitch and rotation range of the oxygen lance spiral disk and the male end of the spiral pipe are the same to ensure that they can always maintain a fixed vertical distance. The rotation range is greater than the error caused by oxygen lance maintenance to ensure the accuracy of the oxygen lance elevation. Before hoisting the repaired oxygen lance, the oxygen lance spiral disk and the three male ends of the spiral pipes need to be adjusted accordingly according to the maintenance error.

[0024] The male end and the female end of the spiral pipe are distributed in a triangular shape and correspond to each other, which reduces the occupied space.

[0025] The oxygen lance replacement time of the present application is reduced from the original 2 to 3 hours to 20 to 30 minutes, and the elevation, centering and verticality of the oxygen lance body can be conveniently adjusted, and the replacement is convenient, which greatly reduces the labor intensity of workers, saves time and effort, and improves the efficiency of oxygen lance replacement.

[0026] 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 converter oxygen lance quick-change device, characterized in that: It includes an oxygen lance and an oxygen lance trolley. The oxygen lance is arranged on the oxygen lance trolley. The oxygen lance includes an oxygen lance body, and a spiral pipe is connected to the oxygen lance body; an upper connecting plate is provided on the oxygen lance body, and a female end of the spiral pipe is provided on the upper connecting plate; a lower connecting plate is provided on the oxygen lance trolley: a first lower connecting plate and a second lower connecting plate, a male end of the spiral pipe is provided on the first lower connecting plate, the upper connecting plate cover is arranged on the first lower connecting plate and the second lower connecting plate, the female end of the spiral pipe is connected to the male end of the spiral pipe, and the first lower connecting plate and the second lower connecting plate are respectively provided with locking units, and the locking units lock the upper connecting plate to the first lower connecting plate and the second lower connecting plate.

2. A converter oxygen lance quick-change device according to claim 1, characterized in that: The spiral pipe includes a water outlet spiral pipe, a water inlet spiral pipe and an oxygen inlet spiral pipe; the female end of the spiral pipe includes a water outlet spiral pipe female end, a water inlet spiral pipe female end and an oxygen inlet spiral pipe female end, the female end of the water outlet spiral pipe is arranged at one end of the water outlet spiral pipe, the female end of the water inlet spiral pipe is arranged at one end of the water inlet spiral pipe, and the female end of the oxygen inlet spiral pipe is arranged at one end of the oxygen inlet spiral pipe; the male end of the spiral pipe includes a water outlet spiral pipe male end, a water inlet spiral pipe male end and an oxygen inlet spiral pipe male end.

3. A converter oxygen lance quick-change device according to claim 2, characterized in that: An oxygen gun bracket is arranged on the oxygen gun trolley, the first lower connecting plate and the second lower connecting plate are arranged on both sides of the oxygen gun bracket, and the oxygen gun body is arranged on the oxygen gun bracket; an oxygen gun spiral disk is rotated on the oxygen gun body, and the pitch and rotation stroke of the oxygen gun spiral disk are the same as the pitch and rotation stroke of the male end of the spiral pipe.

4. A converter oxygen lance quick-change device according to claim 1, characterized in that: The locking units respectively include symmetrically arranged locking bolts, the edges of the upper connecting plate are symmetrically provided with locking grooves, the locking bolts are passed through corresponding locking grooves, and locking pieces are respectively screwed on the tops of the bolts.

5. A converter oxygen lance quick-change device according to claim 4, characterized in that: The locking groove is U-shaped.

6. A converter oxygen lance quick-change device according to claim 1, characterized in that: A height adjustment mechanism is also provided, which adjusts the height of the upper connecting plate; the height adjustment mechanism includes vertically arranged screws, sleeves are screwed on the screws, a positioning hole is opened on the upper connecting plate, the diameter of the positioning hole matches the outer diameter of the screw, the screw passes through the positioning hole, and the axes of the two coincide; the sleeve is rotated, the sleeve moves along the screw, and the upper connecting plate is fine-tuned.

7. A converter oxygen lance quick-change device according to claim 6, characterized in that: The length of the screw is greater than the length of the male end of the spiral pipe exposed to the upper surface of the lower connecting plate when the maximum rotation stroke is reached.

8. The converter oxygen lance quick-change device according to claim 1, characterized in that: The male end of the spiral pipe and the female end of the spiral pipe are both distributed in a triangle.

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