CN216192444U - Blast furnace air distribution system - Google Patents
Blast furnace air distribution system Download PDFInfo
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- CN216192444U CN216192444U CN202122557182.0U CN202122557182U CN216192444U CN 216192444 U CN216192444 U CN 216192444U CN 202122557182 U CN202122557182 U CN 202122557182U CN 216192444 U CN216192444 U CN 216192444U
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Abstract
The utility model discloses a blast furnace air distribution system which comprises three groups of air supply units, wherein each air supply unit comprises a fan, an air supply pipeline and a blast furnace, the air supply pipelines of the three groups of air supply units are respectively provided with a first air distribution sub-pipe, a second air distribution sub-pipe and a third air distribution sub-pipe in parallel, the first air distribution sub-pipe, the second air distribution sub-pipe and the third air distribution sub-pipe are communicated through an air distribution main pipe, the air distribution main pipe is provided with a first air distribution valve group and a second air distribution valve group, the first air distribution valve group is arranged between the first air distribution sub-pipe and the second air distribution sub-pipe, the second air distribution valve group is arranged between the second air distribution sub-pipe and the third air distribution sub-pipe, and the second air distribution valve group is provided with an opening and closing valve in parallel through a switching pipeline. The utility model realizes the air supplement between any two air supply units, and simultaneously ensures that only one air shifting valve works in each air supplement work, thereby being beneficial to the control of the air shifting quantity, ensuring the stability of the air flow and further ensuring the normal work of the blast furnace.
Description
Technical Field
The utility model relates to the technical field of blast furnace air supply devices, in particular to a blast furnace air distribution system.
Background
In a metallurgical enterprise, a blast furnace fan is a key device for supplying cold air gas required by smelting to a blast furnace of an iron-making plant, if the blast furnace fan is in failure and is in emergency shutdown, a serious accident of tuyere slag can be caused just before tapping of the blast furnace at the moment, in extreme cases, the blast furnace gas can flow backwards to cause explosion, the device and the personal safety are seriously threatened, and huge economic loss is caused to the enterprise at the same time, so in order to avoid the situation, air distribution devices are required in a blast furnace air supply pipeline system, the existing air distribution device is shown in figure 1 and comprises three groups of air supply units, wherein each air supply unit comprises a fan 1-1, an air supply pipeline 1-2, a check valve 1-3, an air supply valve 1-4 and a blast furnace 1-5, and further comprises an air distribution pipeline 1-6, and the air distribution pipeline 1-6 is respectively communicated with the air supply pipeline 1-2 of each air supply unit through three branch pipelines 1-7 The branch pipelines 1-7 are provided with air distributing valves 1-8 and opening and closing valves 1-9, when a fan in a certain air supply unit breaks down, the rest air supply pipelines supplement air to the air supply pipeline where the fan is located through the air distributing pipelines, and smooth production is guaranteed.
In the structure, when supplementing air, the two groups of air stirring valves can be connected in series and communicated on the air stirring pipeline, and because the air stirring valves need to adjust the opening at any time under the feedback of the control system, the difficulty of adjustment can be increased by the structure with the two groups of air stirring valves connected in series, so that the air volume control of supplementing air is unstable, and improvement is needed urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to avoid the defects in the prior art and provides a blast furnace air distributing system, thereby effectively solving the defects in the prior art.
In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a blast furnace dials wind system, includes three air supply units of group, air supply unit includes fan, blast pipe way and blast furnace, and three groups are connected in parallel respectively on air supply unit's the blast pipe way and are provided with first sub-pipe of dialling the wind, second and third and dial sub-pipe of the wind, and first sub-pipe of dialling the wind, second dial sub-pipe of the wind and third and dial sub-pipe and communicate through dialling the wind female pipe, dial and be provided with first group valves of dialling the wind and dial valves with the second on the wind female pipe, wherein first group valves of dialling the wind set up and dial between sub-pipe of the wind and second group pipes at the second, the second group valves of dialling the wind set up and dial between sub-pipe of the wind and third through switching pipeline parallelly connected and are provided with the open and close valve.
Furthermore, a check valve and an air supply valve are arranged on the air supply pipeline.
Furthermore, the first air distributing sub-pipe, the second air distributing sub-pipe and the third air distributing sub-pipe are respectively provided with two quick-opening valves, and joints of the air distributing main pipe, the first air distributing sub-pipe, the second air distributing sub-pipe and the third air distributing sub-pipe are respectively positioned between the two quick-opening valves.
Further, the first valve bank of dialling includes that the first air valve and the first trip valve of dialling, the second valve bank of dialling includes that the second dials air valve and second trip valve.
Furthermore, two ends of the air distribution main pipe are connected with the first air distribution sub-pipe and the third air distribution sub-pipe through a three-way connecting piece.
Furthermore, the middle part of the air distributing main pipe is connected with the second air distributing sub-pipe through a four-way connecting piece.
The technical scheme of the utility model has the following beneficial effects: the utility model realizes the air supplement between any two air supply units, and simultaneously ensures that only one air shifting valve works in each air supplement work, thereby being beneficial to the control of the air shifting quantity, ensuring the stability of the air flow and further ensuring the normal work of the blast furnace.
Drawings
FIG. 1 is a schematic structural view of a blast furnace system air-distributing device in the prior art;
fig. 2 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, a blast furnace air distribution system includes three groups of air supply units, each air supply unit includes a fan 1, an air supply pipeline 2 and a blast furnace 3, the air supply pipelines 2 of the three groups of air supply units are respectively provided with a first air distribution sub-pipe 4, a second air distribution sub-pipe 5 and a third air distribution sub-pipe 6 in parallel, the first air distribution sub-pipe 4, the second air distribution sub-pipe 5 and the third air distribution sub-pipe 6 are communicated through a first air distribution sub-pipe 7, specifically, two ends of the first air distribution sub-pipe 7 are connected with the first air distribution sub-pipe 4 and the third air distribution sub-pipe 6 through a three-way connector, a T-shaped communication passage is formed between the first air distribution sub-pipe 4 and the third air distribution sub-pipe 6, the middle part of the first air distribution sub-pipe 7 is connected with the second air distribution sub-pipe 5 through a four-way connector, and a cross-shaped communication passage is formed between the first air distribution sub-pipe 7 and the second air distribution sub-pipe 5.
The main air distributing pipe 7 is provided with a first air distributing valve group and a second air distributing valve group, wherein the first air distributing valve group is arranged between the first air distributing sub-pipe 4 and the second air distributing sub-pipe 5, the second air distributing valve group is arranged between the second air distributing sub-pipe 5 and the third air distributing sub-pipe 6, and the second air distributing valve group is provided with an opening and closing valve 8 in parallel through a switching pipeline 16.
The air supply pipeline 2 is provided with a check valve 9 and an air supply valve 10, so that the condition that air flows backwards when the fan 1 breaks down is avoided.
The first air distributing sub-pipe 4, the second air distributing sub-pipe 5 and the third air distributing sub-pipe 6 are respectively provided with two quick-opening valves 11, and the joints of the air distributing main pipe 7 and the first air distributing sub-pipe 4, the second air distributing sub-pipe 5 and the third air distributing sub-pipe 6 are respectively positioned between the two quick-opening valves 11.
The first valve bank of dialling includes that first blast gate 12 and first trip valve 13 are dialled to the first blast gate, and the second valve bank of dialling includes that the second is dialled blast gate 14 and second trip valve 15.
For convenience of description, the three groups of air supply units in this embodiment are arranged in sequence, namely, a first air supply unit, a second air supply unit and a third air supply unit from top to bottom.
The working principle of the utility model is as follows:
when the entire system is operating normally, the on-off valve 8, the quick-opening valve 11, the first air-deflecting valve 12, the first cut-off valve 13, the second air-deflecting valve 14, and the second cut-off valve 15 are all closed.
When the fan in the first air supply unit breaks down, the fan in the second air supply unit can be used for supplying air for the fan, and the specific operation is as follows: the check valve 9 and the blast valve 10 in the first blast unit are closed, at least one quick-opening valve 11 on the first air stirring sub-pipe 4 is opened, at least one quick-opening valve 12 on the second air stirring sub-pipe 5 is opened, and the first air stirring valve 12 and the first cut-off valve 13 are opened, so that the air supplement of the second blast unit to the first blast unit is realized;
when the fan in the first air supply unit breaks down, the fan in the third air supply unit can be used for supplying air for the fan, and the specific operation is as follows: the check valve 9 and the blast valve 10 in the first blast unit are closed, at least one quick-opening valve 11 on the first air stirring sub-pipe 4 is opened, the opening and closing valve 8 is opened, at least one quick-opening valve 11 on the third air stirring sub-pipe 6 is opened, and the first air stirring valve 12 and the first cut-off valve 13 are opened, so that the third blast unit can supplement air to the first blast unit;
when the fan in the second air supply unit breaks down, the fan in the third air supply unit can be used for supplying air for the fan, and the specific operation is as follows: the check valve 9 and the blast valve 10 in the second blast unit are closed, at least one quick-opening valve 11 on the second air stirring sub-pipe 4 is opened, at least one quick-opening valve 11 on the third air stirring sub-pipe 4 is opened, and the second air stirring valve 14 and the second cut-off valve 15 are opened, so that the air supplement of the third blast unit to the first blast unit is realized.
The air supply device has the advantages that air supply between any two air supply units can be realized in the mode, only one air distributing valve works in each air supply work, so that the control of air distributing quantity is facilitated, the stability of air flow is ensured, and the normal work of the blast furnace is further ensured.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (6)
1. The utility model provides a blast furnace dials wind system, includes three air supply units of group, air supply unit includes fan, blast pipe way and blast furnace, its characterized in that: the three groups of air supply units are respectively provided with a first air distributing sub pipe, a second air distributing sub pipe and a third air distributing sub pipe in parallel on air supply pipelines, the first air distributing sub pipe, the second air distributing sub pipe and the third air distributing sub pipe are communicated through an air distributing main pipe, the air distributing main pipe is provided with a first air distributing valve group and a second air distributing valve group, the first air distributing valve group is arranged between the first air distributing sub pipe and the second air distributing sub pipe, the second air distributing valve group is arranged between the second air distributing sub pipe and the third air distributing sub pipe, and the second air distributing valve group is provided with an opening and closing valve in parallel through a switching pipeline.
2. The blast furnace air distribution system of claim 1, wherein: and a check valve and an air supply valve are arranged on the air supply pipeline.
3. The blast furnace air distribution system of claim 1, wherein: the first air distributing sub-pipe, the second air distributing sub-pipe and the third air distributing sub-pipe are respectively provided with two quick-opening valves, and the joints of the air distributing main pipe, the first air distributing sub-pipe, the second air distributing sub-pipe and the third air distributing sub-pipe are respectively positioned between the two quick-opening valves.
4. The blast furnace air distribution system of claim 1, wherein: the first valve bank of dialling includes that the first air valve and the first trip valve of dialling, the air valve bank is dialled to the second includes that the second dials air valve and second trip valve.
5. The blast furnace air distribution system of claim 1, wherein: and two ends of the air distributing main pipe are connected with the first air distributing sub-pipe and the third air distributing sub-pipe through a three-way connecting piece.
6. The blast furnace air distribution system of claim 1, wherein: the middle part of the air distributing main pipe is connected with the second air distributing sub-pipe through a four-way connecting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122557182.0U CN216192444U (en) | 2021-10-25 | 2021-10-25 | Blast furnace air distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122557182.0U CN216192444U (en) | 2021-10-25 | 2021-10-25 | Blast furnace air distribution system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216192444U true CN216192444U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122557182.0U Active CN216192444U (en) | 2021-10-25 | 2021-10-25 | Blast furnace air distribution system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216192444U (en) |
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2021
- 2021-10-25 CN CN202122557182.0U patent/CN216192444U/en active Active
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