Novel fork structure

Abstract

The utility model relates to a novel fork structure, which can effectively solve the problems of cracking, brick falling and air leakage of a fork, and adopts the technical scheme that the novel fork structure comprises a pipeline main pipe and a pipeline branch pipe, the pipeline main pipe is connected with the pipeline branch pipe, and a plurality of working layers are arranged on the outer wall of the pipeline main pipe; the center of the working layer is formed by building first checker bricks and third checker bricks in a cross-shaped meshing mode, the first checker bricks are distributed in layer columns, the second column and the third column of the third layer are the third checker bricks, the center of the pipeline branch pipe is formed by building the first checker bricks and the second checker bricks below the first checker bricks in a cross-shaped meshing mode, and the second checker bricks and the third checker bricks are distributed in a cross-shaped meshing mode. The three-way opening structure of the hot blast stove is novel in structure, simple in building and high in practicability, the bricks are meshed and buckled together, hidden dangers of a traditional three-way opening structure are eliminated, meanwhile, the phenomena that the bricks are damaged due to extrusion, the brick bodies fall off or peel off and the like caused by expansion are avoided, the service life of the hot blast stove can be greatly prolonged, and the three-way opening structure of the hot blast stove is an innovation of the three-way opening structure of the hot blast stove.

Description

Technical Field

[0001] The utility model relates to the field of hot blast furnaces, in particular to a novel three-way junction structure. Background Art

[0002] The hot air duct that transports high-temperature blast from the hot blast furnace to the blast furnace is a circular duct built with refractory bricks and insulation layers inside a pressure-bearing steel pipe. The high-temperature and high-pressure airflow is sent out from each hot blast branch pipe of the hot blast furnace and sent into the blast furnace after passing through the hot blast main pipe. The structure of the refractory bricks inside the duct has always adopted the method of circumferential masonry of trapezoidal bricks⑦, and the joint part between the main pipe and the branch pipe is conventionally cut and masoned on-site with ordinary pipe bricks. After long-term operation, the bricks inside the duct fall off, the upper ring of the duct sags, the duct leaks and even "runs fire", making the steel shell of the duct red, and it is forced to be frequently repaired and grouting. In this way, the service life of the pipeline will be greatly shortened, which has become a major obstacle to measures to reduce ironmaking costs such as increasing wind temperature, increasing production, and saving coke. Therefore, improving the refractory brick structure of the hot blast duct three-way intersection to meet the requirements of high pressure and high wind temperature is an important matter related to energy saving, increased production, and reduced consumption.

[0003] Yuxing Company carefully investigated and measured the structure and material of pipe bricks, the flow rate of hot air transported by the pipeline, the temperature and periodic changes, and the temperature distribution of the pipe wall. Based on this, a careful analysis was conducted on the impact of high pressure, high wind temperature, and wind temperature changes on refractory materials and the characteristics of damage caused; the characteristics and consequences of deformation of pipeline refractory materials due to creep, "thermal shrinkage" or "thermal expansion" during long-term high wind temperature and high flow transportation. Because the brick masonry in the pipe will form longitudinal and circumferential gaps between bricks under the action of thermal stress, the pipeline will inevitably "run out of fire" and leak air under the action of wind pressure, and the pipe wall will burn red due to high temperature, and its structure will be damaged, which directly affects the design life of the pipeline. Therefore, it is imperative to invent a new three-way intersection structure. Summary of the invention

[0004] In view of the above situation, in order to solve the defects of the prior art, the purpose of the utility model is to provide a new three-way intersection structure, which can effectively solve the problems of cracking, brick falling and air leakage at the three-way intersection.

[0005] The technical solution solved by the utility model is that it includes a pipeline main pipe and a pipeline branch pipe, the pipeline main pipe and the pipeline branch pipe are connected together, a plurality of working layers are arranged on the outer wall of the pipeline main pipe, the center of the working layer is composed of the first lattice bricks and the third lattice bricks laid together in a cross-interlocking shape, the first lattice bricks are distributed in layers, the second and third rows of the third layer are third lattice bricks, and the center of the pipeline branch pipe is composed of the first lattice bricks and the second lattice bricks below them laid together in a cross-interlocking shape.

[0006] The utility model has the advantages of novel structure, simple masonry and strong practicality. The bricks are interlocked and buckled together, eliminating the hidden dangers of the traditional three-way intersection structure. At the same time, there will be no squeezing between bricks due to expansion, brick falling off or peeling, etc., which can greatly improve the service life of the hot blast furnace and is an innovation in the three-way intersection structure of the hot blast furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is the structural front view of the utility model.

[0008] Figure 2 For this utility model Figure 1 Bottom view of .

[0009] Figure 3 For this utility model Figure 2 Side view of.

[0010] Figure 4 For this utility model Figure 2 Schematic diagram of the AA cross-section structure.

[0011] Figure 5 It is a structural schematic diagram of the first checker brick of the utility model.

[0012] Figure 6 It is a structural schematic diagram of the second checker brick of the utility model.

[0013] Figure 7 It is a schematic structural diagram of the third checkered brick of the utility model. DETAILED DESCRIPTION

[0014] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0015] Depend on Figure 1-7 It is given that the utility model includes a pipeline main pipe 1 and a pipeline branch pipe 2. The pipeline main pipe 1 is connected with the pipeline branch pipe 2. A plurality of working layers 3 are arranged on the outer wall of the pipeline main pipe 1. The center of the working layer 3 is composed of first lattice bricks 4 and third lattice bricks 6 laid together in a cross-interlocking shape. The first lattice bricks 4 are distributed in 5 layers and 4 columns, wherein the second and third columns of the third layer are third lattice bricks 6. The center of the pipeline branch pipe 2 is composed of 5 columns of first lattice bricks 4 and 5 columns of second lattice bricks 5 thereunder laid together in a cross-interlocking shape.

[0016] In order to ensure the use effect, the first checker brick 4, the second checker brick 5 and the third checker brick 6 are all heavy refractory bricks.

[0017] The first checkered brick 4, the second checkered brick 5 and the third checkered brick 6 are all wedge-shaped and match each other.

[0018] The second checker brick 5 and the third checker brick 6 have the same thickness, and are thicker than the first checker brick 4 .

[0019] The first checkered brick 4 is provided with a raised cross buckle on one side and a recessed cross buckle matching the raised cross buckle on the other side.

[0020] The second checker brick 5 is provided with a raised cross buckle on one side, a recessed cross buckle matching the raised cross buckle on the other side, and a wedge-shaped protrusion matching the wedge-shaped groove on the third checker brick 6 on one end.

[0021] The third checker brick 6 is provided with a raised cross buckle on one side, a recessed cross buckle matching the raised cross buckle on the other side, and a wedge-shaped groove matching the wedge-shaped protrusion on the second checker brick 5 on one end.

[0022] The use of the utility model is that the pipeline main pipe 1 and the pipeline branch pipe 2 are butt-connected together, the working layer 3 is built with heavy refractory bricks, and the first lattice bricks 4 are increased with cross snap buckles on the sides of the bricks, so that they can bite each other as a whole during masonry, and the second lattice bricks 5 have a thicker brick type so that they can be hooked on the third lattice bricks 6. The thickness of the third lattice bricks 6 is consistent with that of the second lattice bricks 5. At the same time, cross snap buckles are provided, and hooks are added at both ends of the brick type so that they can be hooked on the adjacent first lattice bricks 4. Such a combined structure makes the intersection of the pipeline main pipe 1 and the pipeline branch pipe 2 more secure, and the brick types are snapped together, eliminating the hidden dangers of the traditional three-way intersection structure.

[0023] The utility model has novel structure, simple masonry, strong practicality, and can improve the service life of the hot blast furnace. The brick type has a cross buckle, and the contact parts of the branch pipe and the main pipe are interlocked, so that the longitudinal and circumferential directions are fully combined into a whole. Therefore, there will be no gaps between bricks formed by the shrinkage of the brick body, so as to cause air permeability, air leakage, "fire escape", and burning red. It can also avoid the use of cumbersome repair methods such as grouting. At the same time, there will be no squeezing between bricks caused by expansion, and the brick body will not fall off or peel off. It is an innovation in the three-way structure of the hot blast furnace, and has good promotion and application value and economic and social benefits.

[0024] It should be pointed out that the above is only a preferred embodiment of the utility model, and does not impose any form of limitation on the utility model. Any technician familiar with the profession can use the technical content disclosed above to make changes or modify it into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model, which all fall within the protection scope of the utility model.

Claims

1. A novel three-way junction structure, including a pipeline main pipe and a pipeline branch pipe, characterized in that: The pipeline main pipe (1) is connected to the pipeline branch pipe (2). A plurality of working layers (3) are arranged on the outer wall of the pipeline main pipe (1). The center of the working layer (3) is composed of first lattice bricks (4) and third lattice bricks (6) laid together in a cross-interlocking shape. The first lattice bricks (4) are distributed in 5 layers and 4 rows, wherein the second and third rows of the third layer are third lattice bricks (6). The center of the pipeline branch pipe (2) is composed of 5 rows of first lattice bricks (4) and 5 rows of second lattice bricks (5) below them laid together in a cross-interlocking shape.

2. The novel three-way intersection structure according to claim 1 is characterized in that: The first lattice brick (4), the second lattice brick (5), and the third lattice brick (6) are all heavy refractory bricks.

3. The novel three-way intersection structure according to claim 1 is characterized in that: The first lattice brick (4), the second lattice brick (5), and the third lattice brick (6) are all wedge-shaped and match each other.

4. The novel three-way intersection structure according to claim 1 is characterized in that: The second lattice brick (5) and the third lattice brick (6) have the same thickness, and are thicker than the first lattice brick (4).

5. The novel three-way intersection structure according to claim 1 is characterized in that: The first checkered brick (4) is provided with a raised cross buckle on one side and a recessed cross buckle matching the raised cross buckle on the other side.

6. The novel three-way intersection structure according to claim 1 is characterized in that: The second lattice brick (5) is provided with a raised cross buckle on one side, a recessed cross buckle matching the raised cross buckle on the other side, and a wedge-shaped protrusion matching the wedge-shaped groove on the third lattice brick (6) on one end.

7. The novel three-way intersection structure according to claim 1 is characterized in that: The third lattice brick (6) is provided with a raised cross buckle on one side, a recessed cross buckle matching the raised cross buckle on the other side, and a wedge-shaped groove matching the wedge-shaped raised portion on one end.

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