Converter mouth fixed section flue feeding device

Abstract

The utility model relates to a converter mouth fixed section flue feeding device, and belongs to the technical field of steelmaking equipment in the metallurgical industry. According to the technical scheme, one end of an outer barrel (4) and one end of an inner barrel (5) are connected into a whole through a transition section (3), a connecting flange (1) is arranged on the transition section (3), and the end face of the other end of the outer barrel (4) and the end face of the other end of the inner barrel (5) are inclined planes and are communicated with a cooling ring pipe (7); a plurality of first wear-resisting strips (8) which are arranged in a staggered mode are arranged between the outer barrel body (4) and the inner barrel body (5), a cooling water channel is formed by the first wear-resisting strips (8) which are arranged in the staggered mode and the cooling ring pipe (7), and a water inlet pipe (9) and a water outlet pipe (10) which are communicated with the cooling water channel are arranged on the outer barrel body (4). And a plurality of wear-resistant strips II (6) which are arranged at intervals are arranged on the inner wall of the inner cylinder body (5). The water-cooling ring pipe has the advantages that water leakage caused by the fact that the wear-resisting strips fall off and materials wash the water-cooling ring pipe is avoided, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to a converter furnace mouth fixed section flue feeding device, belonging to the technical field of steelmaking equipment in the metallurgical industry. Background Art

[0002] During converter production, the charging device installed on the fixed section of the furnace flue needs to be used to add materials to adjust the composition of molten steel. However, the existing charging device has a blind spot in the cooling water circulation, the water-cooling ring pipe at the lower part of the inner wall of the device is easily worn and leaks due to the scouring of materials, and the wear-resistant strips attached to the tube wall are deformed, softened and not wear-resistant due to high temperature, and often fall off, resulting in a short service life of the components. Therefore, it is urgent to optimize the design and manufacture of a durable charging device to solve the above problems. Utility Model Content

[0003] The utility model aims to provide a converter furnace mouth fixed section flue feeding device to avoid the wear strips from falling off and the material from washing the water cooling ring pipe and causing water leakage, thereby increasing the service life and solving the problems existing in the background technology.

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

[0005] A flue feeding device for a fixed section of a converter furnace mouth comprises a connecting flange, a transition section, an outer cylinder, an inner cylinder, two wear-resistant strips, a cooling ring pipe, one wear-resistant strip, an inlet pipe and an outlet pipe. One end of the outer cylinder and the inner cylinder are connected into one piece through the transition section. The transition section is provided with a connecting flange. The other end faces of the outer cylinder and the inner cylinder are inclined surfaces and are connected with the cooling ring pipe. A plurality of staggered wear-resistant strips one are provided between the outer cylinder and the inner cylinder. The plurality of staggered wear-resistant strips one and the cooling ring pipe form a cooling water channel. The outer cylinder is provided with an inlet pipe and an outlet pipe connected with the cooling water channel. A plurality of wear-resistant strips two are provided on the inner wall of the inner cylinder.

[0006] The transition section is in a conical cylindrical shape, the end of the transition section with a larger diameter is connected to the connecting flange, and the end of the transition section with a smaller diameter is welded to the outer cylinder and the inner cylinder to form an integrated structure.

[0007] A reinforcing rib plate is provided between the connecting flange and the outer cylinder.

[0008] A plurality of wear-resistant strips arranged at intervals on the inner wall of the inner cylinder are welded to the inner wall of the inner cylinder.

[0009] A portion of the wear-resistant strip between the outer cylinder and the inner cylinder is exposed from the inner cylinder, and the exposed inner cylinder portion and a plurality of wear-resistant strips arranged at intervals on the inner wall of the inner cylinder form a material discharge impact surface.

[0010] A through hole is provided on the wear-resistant strip between the outer cylinder and the inner cylinder.

[0011] The utility model has the beneficial effects of preventing the wear-resistant strip from falling off and water leakage caused by the scouring of the water-cooling ring pipe by materials, thereby improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the front view of the utility model;

[0013] Figure 2 It is a side view of the utility model;

[0014] Figure 3 It is a partial enlarged view of the utility model;

[0015] Figure 4 It is a schematic diagram of the waterway development of the utility model;

[0016] Figure 5 This is a partial enlarged view of the wear-resistant strip of the utility model;

[0017] In the figure: 1-connecting flange, 2-reinforcement rib plate, 3-transition section, 4-outer cylinder, 5-inner cylinder, 6-wear-resistant strip 2, 7-cooling ring pipe, 8-wear-resistant strip 1, 9-water inlet pipe, 10-water outlet pipe, 11-through hole. DETAILED DESCRIPTION

[0018] The present invention will be further described below by way of examples with reference to the accompanying drawings.

[0019] See attached Figure 1-5 A converter furnace mouth fixed section flue feeding device comprises a connecting flange 1, a transition section 3, an outer cylinder 4, an inner cylinder 5, wear-resistant strips 6, a cooling ring pipe 7, wear-resistant strips 8, a water inlet pipe 9 and a water outlet pipe 10. One end of the outer cylinder 4 and the inner cylinder 5 are connected as a whole through the transition section 3. The transition section 3 is provided with a connecting flange 1. The other end surfaces of the outer cylinder 4 and the inner cylinder 5 are inclined surfaces and are connected with the cooling ring pipe 7; a plurality of staggered wear-resistant strips 8 are provided between the outer cylinder 4 and the inner cylinder 5, and a plurality of staggered wear-resistant strips 8 and the cooling ring pipe 7 form a cooling water channel. The outer cylinder 4 is provided with a water inlet pipe 9 and a water outlet pipe 10 connected with the cooling water channel; a plurality of wear-resistant strips 6 arranged at intervals are provided on the inner wall of the inner cylinder 5.

[0020] In this embodiment, refer to the attached Figure 1-5 The transition section 3 is in a conical cylindrical shape. The end of the transition section 3 with a larger diameter is welded to the connecting flange 1, and the end of the transition section 3 with a smaller diameter is welded to the outer cylinder 4 and the inner cylinder 5 to form an integrated structure. The transition section 3 is welded with a reinforcing rib 2 to increase the overall strength.

[0021] The wear-resistant strip 2 6 made of Q345R is intermittently welded on the inner cylinder 5 to form a material discharge impact surface, and the distance between the wear-resistant strip 1 8 is 15mm to avoid overall deformation caused by high-temperature flue gas radiation.

[0022] The wear-resistant strips 8 made of Q345R are arranged in a staggered manner and are continuously welded with the outer cylinder 4 and the inner cylinder 5 to form an inner waterway. In addition, 2 / 3 of the wear-resistant strips 8 are embedded in the waterway, and only 1 / 3 of them are exposed from the inner cylinder 5, which not only plays the role of distributing the waterway, but also plays the role of anti-wear surface by receiving direct impact of materials. Figure 5 shown.

[0023] Except for one piece of wear-resistant strip 8 embedded in the middle of the water inlet pipe 9 and the outlet water pipe 10, all of them are drilled with a through hole 11 with a diameter of 5 mm. This can avoid the blind spot caused by the dead point of water circulation, which leads to poor circulation, uneven cooling and thermal deformation of the device, and shortens the service life. See attached Figure 4 shown.

[0024] The water-cooling ring pipe 7 is respectively connected with the outer cylinder 4 and the inner cylinder 5 to form a material discharge channel. When the water-cooling ring pipe 7 is welded to the inner cylinder 5 , it is not allowed to protrude from the inner diameter surface of the material discharge channel formed by the inner cylinder 5 .

Claims

1. A converter furnace mouth fixed section flue feeding device, characterized in that: The invention comprises a connecting flange (1), a transition section (3), an outer cylinder (4), an inner cylinder (5), a second wear-resistant strip (6), a cooling ring pipe (7), a first wear-resistant strip (8), a water inlet pipe (9) and a water outlet pipe (10). One end of the outer cylinder (4) and the inner cylinder (5) are connected as a whole through the transition section (3). The transition section (3) is provided with a connecting flange (1). The other end surfaces of the outer cylinder (4) and the inner cylinder (5) are inclined surfaces and are connected to the cooling ring pipe (7). A plurality of staggeredly arranged first wear-resistant strips (8) are provided between the outer cylinder (4) and the inner cylinder (5). The plurality of staggeredly arranged first wear-resistant strips (8) and the cooling ring pipe (7) form a cooling water channel. The outer cylinder (4) is provided with a water inlet pipe (9) and a water outlet pipe (10) connected to the cooling water channel. The inner wall of the inner cylinder (5) is provided with a plurality of spaced-apart second wear-resistant strips (6).

2. A converter furnace mouth fixed section flue feeding device according to claim 1, characterized in that: The transition section (3) is in the shape of a cone, the end of the transition section (3) with a larger diameter is connected to the connecting flange (1), and the end of the transition section (3) with a smaller diameter is welded to the outer cylinder (4) and the inner cylinder (5) to form an integrated structure.

3. A converter furnace mouth fixed section flue feeding device according to claim 2, characterized in that: A reinforcing rib plate (2) is provided between the connecting flange (1) and the outer cylinder (4).

4. The converter furnace mouth fixed section flue feeding device according to claim 1, characterized in that: A plurality of wear-resistant strips (6) arranged at intervals on the inner wall of the inner cylinder (5) are welded to the inner wall of the inner cylinder (5).

5. A converter furnace mouth fixed section flue feeding device according to claim 1 or 4, characterized in that: A portion of the wear-resistant strip 1 (8) between the outer cylinder (4) and the inner cylinder (5) is exposed from the inner cylinder (5), and the exposed portion of the inner cylinder (5) and a plurality of wear-resistant strips 2 (6) arranged at intervals on the inner wall of the inner cylinder (5) form a material discharge impact surface.

6. The converter furnace mouth fixed section flue feeding device according to claim 1, characterized in that: A through hole (11) is provided on the wear-resistant strip (8) between the outer cylinder (4) and the inner cylinder (5).

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