Tundish working layer mold capable of preventing gas leakage

Abstract

A tundish working layer mold capable of preventing gas leakage belongs to the technical field of steelmaking equipment and comprises a mold body, an independent cavity corresponding to a roaster burner in position is arranged in the mold body, and twelve gas through holes are formed in the bottom of the side face of the cavity and are evenly arranged at intervals. An exhaust pipe located on the outer side of the cavity is arranged on the top face of the mold body, a plug is arranged at the top end of the exhaust pipe, and the bottom end of the exhaust pipe communicates with the interior of the mold body; the bottom of the exhaust pipe is connected with a gas-guide pipe, one end of the gas-guide pipe is communicated with the exhaust pipe, and the other end of the gas-guide pipe is led to the position of a roaster burner. The tundish working layer mold capable of preventing gas leakage is reasonable in design and simple and ingenious in structure, not only can improve the smoothness of a channel, but also can prevent smoke from overflowing and guarantee safe production, and is suitable for popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of steelmaking equipment, in particular to a tundish working layer mould for preventing gas leakage. Background Art

[0002] At present, the fourth steelmaking plant adopts a double tundish casting process. The tundish is a special-shaped design with the impact zone on the side. The overall shape is long and narrow, and the service life is 40 hours. The tundish working layer mold is set inside the tundish, and its overall shape corresponds to the tundish; the inside of the tundish working layer mold is an independent frame, and the outside is welded with steel plates; the cavity is independently formed at the position of the roaster burner, and a circular hole is opened at the bottom of the side of each cavity for bottom gas circulation; twelve φ80mm exhaust pipes are set up on the upper part of the entire mold.

[0003] During the baking process, the existing mold has some "dead zones" due to poor circulation in the bottom channel, and some incompletely burned gases directly overflow from the exhaust pipe when baking the working layer, causing the gas probe to continuously alarm, thus creating a major safety hazard. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art such as poor channel flow and exhaust pipe overflow, and to provide a gas leakage-proof intermediate ladle working layer mold, which has a reasonable design and a simple and ingenious structure. It can not only improve the channel smoothness, but also prevent smoke from overflowing, thereby ensuring safe production and being suitable for promotion.

[0005] The utility model is realized through the following technical scheme: a gas leakage-proof tundish working layer mold, comprising a mold main body, an independent cavity corresponding to the position of a roaster burner is arranged inside the mold main body, twelve gas through holes are opened at the bottom of the side of the cavity, and the twelve gas through holes are evenly spaced; an exhaust pipe located outside the cavity is arranged on the top surface of the mold main body, a plug is arranged on the top of the exhaust pipe, and the bottom end of the exhaust pipe is connected with the inside of the mold main body; an air guide pipe is connected to the bottom of the exhaust pipe, one end of the air guide pipe is connected with the exhaust pipe, and the other end of the air guide pipe is led to the position of the roaster burner.

[0006] A further improvement of the utility model is that the mold body comprises an independent frame, a sealing plate is arranged outside the independent frame, and the sealing plate is made of a δ30mm steel plate.

[0007] A further improvement of the utility model is that the cavity is a vertical rectangular structure with an opening on the top surface; the twelve gas through holes are arranged in four rows, three in a row, and are evenly arranged from top to bottom at the bottom of the side of the cavity.

[0008] A further improvement of the utility model is that the gas through hole is a φ40 circular hole.

[0009] A further improvement of the utility model is that the air guide pipe is a φ20mm seamless pipe, and the air guide pipe is connected to a position 50mm upward from the bottom of the exhaust pipe.

[0010] A further improvement of the utility model is that the plugging is a φ20mm steel plate.

[0011] From the above technical scheme, it can be seen that the beneficial effects of the utility model are: the design of the mold is reasonable, and the overall structure is simple and ingenious, which not only improves the smoothness of the channel, but also avoids the overflow of smoke, ensures safe production, and is suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model.

[0014] Figure 2 It is a cross-sectional view of a mold body according to a specific embodiment of the utility model.

[0015] 1. Mold body; 2. Cavity; 3. Gas through hole; 4. Exhaust pipe; 5. Air guide pipe. DETAILED DESCRIPTION

[0016] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0017] Please refer to the attached Figure 1 and Figure 2 , combined with a specific embodiment, it is explained as follows: The utility model describes a gas leakage-proof tundish working layer mold, comprising a mold body 1, the mold body 1 comprises an independent frame, a sealing plate is arranged outside the independent frame, and the sealing plate is made of δ30mm steel plate.

[0018] An independent cavity 2 corresponding to the position of the burner of the roaster is arranged inside the mold body 1. The cavity 2 is a vertical rectangular structure with an open top. Twelve gas through holes 3 are opened at the bottom of the side of the cavity 2. The twelve gas through holes 3 are arranged in four rows, three in a row, and are evenly arranged at the bottom of the side of the cavity 2 from top to bottom.

[0019] The top surface of the mold body 1 is provided with an exhaust pipe 4 located outside the cavity 2, the top of the exhaust pipe 4 is provided with a plug, and the bottom end of the exhaust pipe 4 is connected to the inside of the mold body 1; the bottom of the exhaust pipe 4 is connected to an air guide pipe 5, one end of the air guide pipe 5 is connected to the exhaust pipe 4, and the other end of the air guide pipe 5 leads to the burner position of the roaster.

[0020] The working principle of the utility model: the mold is improved on the basis of the tundish working layer mold, and the specific structures of the mold body 1, the chamber 2 and the exhaust pipe 4 can refer to the prior art. The mold, that is, the mold body 1 is installed in the tundish shell, and a 100mm gap is left around for material filling; after the tundish is assembled, it is hung on the baking platform and can be baked at medium fire for 1.5 hours.

[0021] In actual use, the sealing plate is made of δ30mm steel plate to reduce the thermal stress deformation of the steel plate during baking; twelve gas through holes 3 are opened at the bottom of the side of the chamber 2, and the internal channel fluidity is increased through the arrangement structure of three in a row and divided into four rows, thereby solving the problem of the existence of some "dead zones"; after the exhaust pipe 4 is blocked, the smoke overflow phenomenon is avoided, thereby avoiding the smoke pollution points in the workshop, and the structure of the exhaust pipe 4 and the air guide pipe 5 can lead the floating gas to the burner position, thereby realizing the secondary combustion of the floating gas at the burner position of the bag baking device.

[0022] In one embodiment, the gas through hole 3 is a φ40 circular hole. The gas through hole 3 can further improve the channel flowability.

[0023] In one embodiment, the air guide pipe 5 is a φ20 mm seamless pipe, and the air guide pipe 5 is connected to a position 50 mm upward from the bottom of the exhaust pipe 4. The air guide pipe 5 can better guide the floating coal gas.

[0024] In one embodiment, the plug is a φ20 mm steel plate. The plug is easy to obtain and easy to assemble.

[0025] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0026] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gas leakage-proof tundish working layer mold, comprising a mold body (1), wherein an independent cavity (2) corresponding to the position of a roaster burner is arranged inside the mold body (1), characterized in that: Twelve gas through holes (3) are provided at the bottom of the side of the cavity (2), and the twelve gas through holes (3) are evenly spaced. An exhaust pipe (4) located outside the cavity (2) is provided on the top surface of the mold body (1), and a plug is provided at the top end of the exhaust pipe (4), and the bottom end of the exhaust pipe (4) is connected to the inside of the mold body (1). An air guide pipe (5) is connected to the bottom of the exhaust pipe (4), one end of the air guide pipe (5) is connected to the exhaust pipe (4), and the other end of the air guide pipe (5) is led to the burner position of the roaster.

2. A gas leakage-proof tundish working layer mold according to claim 1, characterized in that: The mold body (1) comprises an independent frame, and a sealing plate is arranged outside the independent frame. The sealing plate is made of a δ30mm steel plate.

3. A gas leakage-proof tundish working layer mold according to claim 1 or 2, characterized in that: The cavity (2) is a vertical rectangular structure with an open top surface; the twelve gas through holes (3) are arranged in four rows, three in a row, and are evenly arranged from top to bottom at the bottom of the side of the cavity (2).

4. A gas leakage-proof tundish working layer mold according to claim 3, characterized in that: The gas through hole (3) is a φ40 circular hole.

5. The gas leakage-proof tundish working layer mold according to claim 1, characterized in that: The air guide pipe (5) is a φ20 mm seamless pipe, and the air guide pipe (5) is connected to a position 50 mm upward from the bottom of the exhaust pipe (4).

6. The gas leakage-proof tundish working layer mold according to claim 1, characterized in that: The sealing is φ20mm steel plate.

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