Blast furnace bustle pipe fork reinforcing device

Abstract

The utility model relates to a blast furnace bustle pipe fork reinforcing device, and belongs to the technical field of blast furnace ironmaking production equipment in the metallurgical industry. According to the technical scheme, a hot air main pipe (1), a reducer pipe (2) and a bustle pipe (3) are welded together to form the blast furnace bustle pipe fork, the reducer pipe (2) is sleeved with an oval fastening ring (6), the bustle pipe (3) is sleeved with the two semicircular fastening rings (4) respectively, the middles of the two semicircular fastening rings (4) are welded together, and the two semicircular fastening rings (4) are welded together. And the two ends of the two semicircular fastening rings (4) are respectively welded with the elliptical fastening ring (6) and the reducer pipe (2) through the tensile round steel (5). The utility model has the beneficial effects that the three-way structure of the blast furnace bustle pipe can be ensured to be stable, and the production requirement of high air temperature is met.

Description

Technical Field

[0001] The utility model relates to a blast furnace hot blast surrounding pipe three-way reinforcement device, belonging to the technical field of blast furnace ironmaking production equipment in the metallurgical industry. Background Art

[0002] The hot blast pipe junction of the blast furnace includes the hot blast main pipe, the reducer and the hot blast pipe. The reducer is composed of multiple rectangular plates and triangular plates. During the design and construction of the junction, the hot blast main pipe, the reducer and the hot blast pipe are connected by welding. Figure 1 The dotted lines shown lack effective reinforcement devices. Since the hot blast pipe junction is in a working environment with high wind temperature and high wind pressure, the steel structure of the junction is subjected to multi-directional stress concentration such as gravity, shear force, and expansion force, and deformation of the steel structure, cracking of welds, and collapse of internal refractory materials often occur. The unstable structure of the junction not only limits the implementation of high wind temperature, but also limits the transmission of normal wind temperature. Therefore, a reinforcement device suitable for the junction of the hot blast pipe of the blast furnace is designed and manufactured to ensure the stability of the junction structure of the hot blast pipe of the blast furnace and achieve the production requirements of high wind temperature. Utility Model Content

[0003] The utility model aims to provide a blast furnace hot blast surrounding pipe three-way reinforcement device, which can ensure the stability of the blast furnace hot blast surrounding pipe three-way structure, achieve high wind temperature production requirements, and solve the problems existing in the background technology.

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

[0005] A blast furnace hot blast surrounding pipe three-way reinforcement device comprises a hot blast main pipe, a reducer and a hot blast surrounding pipe. The hot blast main pipe, the reducer and the hot blast surrounding pipe are welded together to form a blast furnace hot blast surrounding pipe three-way reinforcement device. The device also comprises a semicircular fastening ring, a tensile round steel and an elliptical fastening ring. The elliptical fastening ring is sleeved on the reducer. There are two semicircular fastening rings, which are respectively sleeved on the hot blast surrounding pipe. The middle of the two semicircular fastening rings are welded together, and the two ends of the two semicircular fastening rings are respectively welded to the elliptical fastening ring and the reducer through the tensile round steel.

[0006] The two ends of the two semicircular fastening rings are respectively welded to the tensile round steel, and the tensile round steel is welded to the elliptical fastening ring and the reducer.

[0007] The semicircular fastening ring and the elliptical fastening ring are both structures formed by welding two rib vertical plates together, and both have T-shaped cross sections.

[0008] The semicircular fastening ring and the elliptical fastening ring are both structures formed by welding a number of rib plates together, and their cross sections are all H-shaped, isosceles triangle, semicircular or rectangular.

[0009] The beneficial effects of the utility model are: it can ensure the stability of the three-way structure of the blast furnace hot blast surrounding pipe, meet the production requirements of hot blast pipeline performance and high blast temperature, and has a simple structure, low manufacturing cost and small space occupation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the utility model;

[0011] Figure 2 This is a three-dimensional diagram of the installation state of the utility model;

[0012] Figure 3 This is a top view of the utility model in the installed state;

[0013] Figure 4 This is the AA cross-sectional view of the utility model;

[0014] In the figure: hot air main pipe 1, reducer 2, hot air surrounding pipe 3, semicircular fastening ring 4, tensile round steel 5, elliptical fastening ring 6. DETAILED DESCRIPTION

[0015] The present invention will be further described below by way of examples with reference to the accompanying drawings.

[0016] See attached Figure 1-4 A blast furnace hot blast surrounding pipe three-way reinforcement device comprises a hot blast main pipe 1, a reducer pipe 2 and a hot blast surrounding pipe 3. The hot blast main pipe 1, the reducer pipe 2 and the hot blast surrounding pipe 3 are welded together to form a blast furnace hot blast surrounding pipe three-way, and the composition also comprises a semicircular fastening ring 4, a tensile round steel 5 and an elliptical fastening ring 6. The elliptical fastening ring 6 is sleeved on the reducer pipe 2. There are two semicircular fastening rings 4. The two semicircular fastening rings 4 are respectively sleeved on the hot blast surrounding pipe 3. The middle of the two semicircular fastening rings 4 are welded together. The two ends of the two semicircular fastening rings 4 are respectively welded together with the elliptical fastening ring 6 and the reducer pipe 2 through the tensile round steel 5.

[0017] In this embodiment, refer to the attached Figure 1-4 The semicircular fastening ring 4 and the elliptical fastening ring 6 are both structures formed by welding two rib vertical plates together, and both have T-shaped cross sections.

[0018] The tensile round steel 5 is divided into four sections, and the four sections of tensile round steel 5 are respectively welded on the reducer 2, two in a group, and the elliptical fastening ring 6 is sleeved on the reducer 2 and welded on the four sections of tensile round steel 5. The two semicircular fastening rings 4 are respectively sleeved on the hot air surrounding pipe 3, and the middle of the two semicircular fastening rings 4 are welded together, and the two ends of the two semicircular fastening rings 4 are respectively welded to the tensile round steel 5 and the elliptical fastening ring 6.

[0019] The cross sections of the semicircular fastening ring 4 and the elliptical fastening ring 6 can also be welded into an H-shape, an isosceles triangle, a semicircle or a rectangle.

Claims

1. A blast furnace hot blast surrounding pipe three-way reinforcement device, comprising a hot blast main pipe (1), a reducer pipe (2) and a hot blast surrounding pipe (3), wherein the hot blast main pipe (1), the reducer pipe (2) and the hot blast surrounding pipe (3) are welded together to form the blast furnace hot blast surrounding pipe three-way reinforcement device, characterized in that: The composition also includes a semicircular fastening ring (4), a tensile round steel (5) and an elliptical fastening ring (6). The elliptical fastening ring (6) is sleeved on the reducer (2). There are two semicircular fastening rings (4). The two semicircular fastening rings (4) are respectively sleeved on the hot air surrounding pipe (3). The middle of the two semicircular fastening rings (4) are welded together. The two ends of the two semicircular fastening rings (4) are respectively welded together with the elliptical fastening ring (6) and the reducer (2) through the tensile round steel (5).

2. A blast furnace hot blast pipe three-way reinforcement device according to claim 1, characterized in that: The two ends of the two semicircular fastening rings (4) are respectively welded to the tensile round steel (5), and the tensile round steel (5) is welded to the elliptical fastening ring (6) and the reducer (2).

3. A blast furnace hot blast pipe three-way reinforcement device according to claim 1, characterized in that: The semicircular fastening ring (4) and the elliptical fastening ring (6) are both structures consisting of two rib vertical plates welded together, and both have T-shaped cross-sections.

4. A blast furnace hot blast pipe three-way reinforcement device according to claim 1, characterized in that: The semicircular fastening ring (4) and the elliptical fastening ring (6) are both structures composed of a plurality of rib plates welded together, and their cross-sections are both H-shaped, isosceles triangle, semicircular or rectangular.

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