Fire stopping device of tundish roaster burner

Abstract

The utility model discloses a fire blocking device of a tundish roaster burner, and relates to the technical field of metallurgical engineering. The fireproof plate comprises a fireproof plate body, the fireproof plate body is an integrated cast iron plate, a cooling circulation channel is arranged in the fireproof plate body, a water inlet pipe opening and a water outlet pipe opening which are connected with the two ends of the cooling circulation channel are fixed to the peripheral side face of the fireproof plate body, and the cooling circulation channel is an embedded cooling coil pipe or a cooling groove channel. And when the cooling circulation passage is the pre-embedded cooling coil, the pre-embedded cooling coil is embedded and mounted in the fireproof plate body. An existing steel shell refractory material type fireproof plate is replaced by the water-cooled casting fireproof plate, the whole fireproof plate is integrally formed through cast iron, a water-cooled passage is arranged in the fireproof plate, deformation after high temperature is prevented, the frequency of replacement and maintenance is reduced, the wall of the cast iron piece is thick, deformation can be effectively prevented, the service life is prolonged, and the production cost is reduced. Meanwhile, potential quality hazards are eradicated, and the continuous casting machine operation rate is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical engineering, in particular to a fire-blocking device for a burner of a tundish roaster. Background Art

[0002] The burners of the tundish baker are usually evenly arranged according to the shape of the tundish. The purpose is to ensure that the tundish is baked evenly and the tundish baking requirements are met. In order to protect the pipes at the burner connection and prevent the flame from rising during baking, a fire baffle is usually installed above the burner.

[0003] The fire baffle is generally made of refractory cast on the steel shell. However, due to the large number of streams in the continuous casting machine and the large number of corresponding baking burner arrangements, the refractory fire baffle above the burner is often burned out, and the refractory will fall off and fall into the tundish, seriously affecting the quality of the molten steel.

[0004] At the same time, the refractory fire baffle needs to be replaced frequently, which will affect the operating rate of the continuous casting machine. Damage to the refractory fire baffle can easily cause pipeline deformation, which will eventually cause the burner to be misaligned, seriously affecting the baking effect of the tundish.

[0005] Therefore, the impact of the burning of the fire baffle of the burner of the tundish baking machine must be solved to meet the production requirements. Utility Model Content

[0006] The utility model aims to provide a fire damper for a burner of a tundish baking machine, in which a water-cooled casting fire damper replaces the existing steel shell refractory fire damper. The entire fire damper is integrally formed of cast iron and is provided with a water cooling passage inside to prevent deformation after high temperature and reduce the frequency of replacement and maintenance. The wall thickness of the cast iron part can effectively prevent deformation, increase service life and reduce production costs, while eliminating quality risks and improving the operating rate of the continuous casting machine.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model discloses a fire-blocking device for a burner of a tundish baking machine, comprising a fire-blocking plate body;

[0009] The fire baffle body is an integral cast iron plate, a cooling circulation passage is arranged in the fire baffle body, and a water inlet and a water outlet connected to the two ends of the cooling circulation passage are fixed on the side surface of the fire baffle body;

[0010] The cooling circulation passage is a pre-buried cooling coil or a cooling trough passage;

[0011] When the cooling circulation passage is a pre-buried cooling coil, the pre-buried cooling coil is embedded and installed in the fire baffle body, and the two ends of the pre-buried cooling coil are respectively connected to the water inlet and the water outlet;

[0012] When the cooling circulation passage is a cooling groove passage, the cooling groove passage includes an inner cavity, which is an annular cavity and is arranged in the fire baffle body. A spiral passage is provided in the inner cavity, and both ends of the spiral passage are respectively connected to the water inlet and outlet.

[0013] Furthermore, the fire baffle body is a hollow cylindrical plate, and the central hole of the fire baffle body is a burner yielding opening.

[0014] Furthermore, the embedded cooling coil is a spiral coil structure, and an outer branch pipe is connected to the inner pipe end of the embedded cooling coil. The outer branch pipe extends to the outside of the fire baffle body and does not interfere with the position of the embedded cooling coil.

[0015] Furthermore, a left rib and a right rib are provided in the inner cavity, and a plurality of water retaining rings are provided in sequence from the outside to the inside in the large space between the left rib and the right rib, and openings are alternately provided at both ends of the plurality of water retaining rings, and the spiral passage is composed of a plurality of inner cavities, a left rib, a right rib, a plurality of water retaining rings and openings.

[0016] Furthermore, a small space between the left rib and the right rib forms a water outlet passage, a notch connected to the end of the spiral passage is provided on the inner side of the right rib, and the water outlet passage is connected to the end of the spiral passage through the notch.

[0017] Furthermore, the water inlet pipe port is connected to the end portion of the outer side of the spiral passage, and the water outlet pipe port is connected to the water outlet passage.

[0018] The utility model has the following beneficial effects:

[0019] The utility model replaces the existing steel shell refractory fire baffle with a water-cooled casting fire baffle. The entire fire baffle is integrally formed of cast iron and is provided with a water cooling passage inside to prevent deformation after high temperature and reduce the frequency of replacement and maintenance. The thick wall of the cast iron part can effectively prevent deformation, increase service life and reduce production costs, while eliminating quality risks and improving the operation rate of the continuous casting machine.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1It is a structural schematic diagram of a fire stop device for a burner of a tundish baking machine of the utility model;

[0023] Figure 2 This is a structural cross-sectional view of the first embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the second embodiment of the utility model after cutting off half;

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1-fire baffle body, 2-embedded cooling coil, 3-water inlet pipe, 4-water outlet pipe, 5-cooling trough passage, 201-external branch pipe, 501-inner cavity, 502-spiral passage, 503-left retaining edge, 504-right retaining edge, 505-water retaining ring, 506-opening, 507-water outlet passage, 508-gap. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Embodiment 1

[0029] See also Figure 1-2 As shown, the utility model is a fire-blocking device for a burner of a tundish baking machine, comprising a fire-blocking plate body 1;

[0030] The fire baffle body 1 is an integral cast iron plate, a cooling circulation passage is arranged inside the fire baffle body 1, and a water inlet pipe 3 and a water outlet pipe 4 connected to both ends of the cooling circulation passage are fixed to the side surface of the fire baffle body 1;

[0031] The cooling circulation path is a pre-buried cooling coil 2;

[0032] When the cooling circulation passage is a pre-buried cooling coil 2, the pre-buried cooling coil 2 is embedded and installed in the fire baffle body 1, and both ends of the pre-buried cooling coil 2 are connected to the water inlet 3 and the water outlet 4 respectively.

[0033] Among them Figure 1-2 As shown, the fire baffle body 1 is a hollow cylindrical plate, and the central hole of the fire baffle body 1 is a burner clearance opening.

[0034] Among them Figure 2As shown, the embedded cooling coil 2 is a spiral coil structure, and the inner pipe end of the embedded cooling coil 2 is connected to an outer branch pipe 201, which extends to the outside of the fire baffle body 1 and does not interfere with the position of the embedded cooling coil 2.

[0035] Embodiment 2

[0036] See also Figure 1 and Figure 3 As shown, the utility model is a fire-blocking device for a burner of a tundish baking machine, comprising a fire-blocking plate body 1;

[0037] The fire baffle body 1 is an integral cast iron plate, a cooling circulation passage is arranged inside the fire baffle body 1, and a water inlet pipe 3 and a water outlet pipe 4 connected to both ends of the cooling circulation passage are fixed to the side surface of the fire baffle body 1;

[0038] The cooling circulation passage is a cooling tank passage 5;

[0039] When the cooling circulation passage is a cooling groove passage 5, the cooling groove passage 5 includes an inner cavity 501, which is a circular cavity and is arranged in the fire baffle body 1. A spiral passage 502 is provided in the inner cavity 501, and both ends of the spiral passage 502 are respectively connected to the water inlet pipe port 3 and the water outlet pipe port 4.

[0040] Among them Figure 1 and Figure 3 As shown, the fire baffle body 1 is a hollow cylindrical plate, and the central hole of the fire baffle body 1 is a burner clearance opening.

[0041] Among them Figure 3 As shown, a left rib 503 and a right rib 504 are provided in the inner cavity 501, and a plurality of water retaining rings 505 are provided in sequence from the outside to the inside in the large space between the left rib 503 and the right rib 504. Openings 506 are alternately provided at both ends of the plurality of water retaining rings 505, and the spiral passage 502 is composed of a plurality of inner cavities 501, a left rib 503, a right rib 504, a plurality of water retaining rings 505 and an opening 506.

[0042] Among them Figure 3 As shown, the small space between the left rib 503 and the right rib 504 forms a water outlet passage 507 , and a notch 508 connected to the end of the spiral passage 502 is provided on the inner side of the right rib 504 , and the water outlet passage 507 is connected to the end of the spiral passage 502 through the notch 508 .

[0043] Among them Figure 3 As shown, the water inlet pipe port 3 is connected to the end of the outer side of the spiral passage 502 , and the water outlet pipe port 4 is connected to the water outlet passage 507 .

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fire-blocking device for a tundish baking burner, comprising a fire-blocking plate body (1), characterized in that: The fire baffle body (1) is an integral cast iron plate, a cooling circulation passage is provided in the fire baffle body (1), and a water inlet pipe (3) and a water outlet pipe (4) connected to two ends of the cooling circulation passage are fixed on the side surface of the fire baffle body (1); The cooling circulation passage is a pre-buried cooling coil (2) or a cooling tank passage (5); When the cooling circulation passage is a pre-buried cooling coil (2), the pre-buried cooling coil (2) is embedded and installed in the fire baffle body (1), and the two ends of the pre-buried cooling coil (2) are respectively connected to the water inlet pipe (3) and the water outlet pipe (4); When the cooling circulation passage is a cooling groove passage (5), the cooling groove passage (5) comprises an inner cavity (501), the inner cavity (501) is an annular cavity and is arranged in the fire baffle body (1), a spiral passage (502) is provided in the inner cavity (501), and two ends of the spiral passage (502) are respectively connected to a water inlet pipe port (3) and a water outlet pipe port (4).

2. The fire-blocking device for a tundish baking burner according to claim 1, characterized in that: The fire baffle body (1) is a hollow cylindrical plate, and the central hole of the fire baffle body (1) is a burner clearance opening.

3. The fire stop device for a tundish baking machine burner according to claim 1, characterized in that: The embedded cooling coil (2) is a spiral coil structure, and an outer branch pipe (201) is connected to the inner pipe end of the embedded cooling coil (2). The outer branch pipe (201) extends to the outside of the fire baffle body (1) and does not interfere with the position of the embedded cooling coil (2).

4. The fire stop device for a tundish baking burner according to claim 1, characterized in that: The inner cavity (501) is provided with a left rib (503) and a right rib (504); a plurality of water retaining rings (505) are sequentially provided in the large space between the left rib (503) and the right rib (504) from the outside to the inside; openings (506) are arranged alternately at both ends of the plurality of water retaining rings (505); and the spiral passage (502) is composed of a plurality of inner cavities (501), a left rib (503), a right rib (504), a plurality of water retaining rings (505) and an opening (506).

5. The fire stop device for a tundish baking machine burner according to claim 4, characterized in that: The small space between the left rib (503) and the right rib (504) forms a water outlet passage (507); a notch (508) connected to the end of the spiral passage (502) is provided on the inner side of the right rib (504); and the water outlet passage (507) is connected to the end of the spiral passage (502) via the notch (508).

6. The fire stop device for a tundish baking machine burner according to claim 5, characterized in that: The water inlet pipe port (3) is connected to the end portion outside the spiral passage (502), and the water outlet pipe port (4) is connected to the water outlet passage (507).

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