Blast furnace top water fetching protection device

Abstract

The utility model provides a blast furnace top water fetching protection device which comprises a blast furnace body high-pressure water supply pipeline and a steam source pipeline, a water fetching gun is arranged at the output end of the high-pressure water supply pipeline, a steam connector is arranged at the output end of the steam source pipeline, and the water fetching gun and the steam connector are both arranged on the blast furnace top. A first water supply valve and a second water supply valve are arranged on the high-pressure water supply pipeline of the blast furnace body, and a first steam valve and a second steam valve are arranged on the steam source pipeline; a communicating branch is arranged on a water supply pipeline between the first water supply valve and the second water supply valve and a steam pipeline between the first steam valve and the second steam valve, and a main valve, a first branch valve and a second branch valve are arranged on the communicating branch. The water supply device is simple in structure, when the water supply amount is insufficient, the first branch valve and the second branch valve are opened to supply water through the furnace top steam pipeline, deformation and damage of furnace top equipment caused by insufficient water supply amount are avoided, and normal production of the blast furnace is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace equipment, and in particular to a blast furnace top water protection device. Background Technology

[0002] The cooling system for the blast furnace top equipment consists of a high-pressure water system and a soft water system. Due to the frequent water injection operations at the blast furnace top, the required water volume is extremely stringent, and the entire top water injection system plays a crucial role in blast furnace production. The water for the top is supplied by an industrial water (high-pressure water) system. If the top temperature is high and the water volume is insufficient, the cooling intensity will be inadequate, leading to deformation and damage of the top equipment, preventing normal charging, and potentially forcing a blast furnace shutdown – a serious and catastrophic accident resulting in huge economic losses. Furthermore, if the top water guns become clogged, and this problem cannot be resolved during production, it will also result in insufficient water volume at the top, severely affecting the normal operation of the top equipment and significantly hindering normal blast furnace production. Utility Model Content

[0003] To address the aforementioned technical problems, a blast furnace top water spray protection device is provided. The technical means employed in this invention are as follows:

[0004] A blast furnace top water spraying protection device includes a high-pressure water supply pipeline for the blast furnace body and a steam source pipeline. The output end of the high-pressure water supply pipeline is a water spraying gun, and the output end of the steam source pipeline is a steam connector. Both the water spraying gun and the steam connector are located on the top of the blast furnace. The high-pressure water supply pipeline for the blast furnace body is equipped with a first water supply valve and a second water supply valve. The steam source pipeline is equipped with a first steam valve and a second steam valve. A connecting branch is provided between the water supply pipeline between the first water supply valve and the second water supply valve and between the steam pipeline between the first steam valve and the second steam valve. The connecting branch is equipped with a main valve, a first branch valve, and a second branch valve.

[0005] Furthermore, the middle section of the high-pressure water supply pipeline is a water jet supply ring pipe wound around the blast furnace.

[0006] Furthermore, the middle section of the steam source pipeline is a steam loop pipeline wound around the blast furnace.

[0007] Furthermore, the first water supply valve is a normally open valve, and the second water supply valve is a pneumatic valve that adjusts the water supply volume at the furnace top according to the furnace top temperature and is closed when not in use.

[0008] Furthermore, both the first steam valve and the second steam valve are in the closed state during normal production.

[0009] Furthermore, the first branch valve and the second branch valve are normally closed during normal production, but when the water supply is insufficient, the first branch valve and the second branch valve are open.

[0010] The present invention has the following advantages: The present invention has a simple structure. When the water supply is insufficient, the first branch valve and the second branch valve are opened to form a steam pipe through the furnace top to supply water. This avoids serious accidents caused by insufficient water supply, such as deformation or damage to the furnace top equipment, failure of the blast furnace to feed materials normally, and forced shutdown of the blast furnace. This avoids economic losses and ensures normal production of the blast furnace.

[0011] When the water supply to the top of the blast furnace is insufficient, and this is caused by the water gun at the top of the furnace, the valve connecting the water gun to the steam pipe should be opened quickly to pump water using the steam pipe at the top of the furnace. At the same time, the water supply should be adjusted using an electric regulating valve. This will quickly solve the problem of insufficient water supply to the top of the furnace and ensure normal production of the blast furnace. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of a blast furnace top water protection device according to the present invention.

[0014] Figure 2 This is a schematic diagram of branch circuit adjustment when the water gun on the furnace top is blocked, according to this utility model.

[0015] In the diagram: 1. High-pressure water supply pipe for blast furnace body; 2. Steam source pipe; 3. Electric valve; 11. Water supply ring pipe for water gun; 12. Water gun valve; 13. Water flow regulating valve; 21. Steam ring pipe; 22. Steam valve for shutdown; 23. Electric steam valve for shutdown; 31. First pneumatic valve; 32. Second pneumatic valve. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] like Figure 1 , Figure 2 As shown in the figure, this utility model embodiment discloses a blast furnace top water spraying protection device. This device serves as a protection device to ensure sufficient water supply to the blast furnace top when the temperature of the blast furnace top equipment is high and the blast furnace top water spraying is abnormal. Specifically, it includes a high-pressure water supply pipeline 1 for the blast furnace body and a steam source pipeline 2. The output end of the high-pressure water supply pipeline is a water spraying gun, and the output end of the steam source pipeline is a steam connector. Both the water spraying gun and the steam connector are located at the top of the blast furnace. The high-pressure water supply pipeline for the blast furnace body is equipped with a first water supply valve and a second water supply valve. The steam source pipeline is equipped with a first steam valve and a second steam valve. A connecting branch is provided between the water supply pipeline between the first water supply valve and the second water supply valve and between the steam pipeline between the first steam valve and the second steam valve. The connecting branch is equipped with a main valve, a first branch valve, and a second branch valve.

[0018] In this embodiment, the first water supply valve is a water gun valve, the second water supply valve is a water volume regulating valve, the first steam valve is a steam valve for shutdown, and the second steam valve is an electric steam valve for shutdown.

[0019] The middle section of the high-pressure water supply pipeline is a water jet supply ring pipe 11 wound around the blast furnace. In this embodiment, there are 8 water jets, and the ends of the high-pressure water ring pipe lead to the 8 water jets on the top of the blast furnace.

[0020] The middle section of the steam source pipeline is a steam loop pipe 21 wound around the blast furnace. In this embodiment, there are 4 steam joints for blast furnace top shutdown, and the ends of the steam loop pipes lead to the 4 steam joints on the blast furnace top.

[0021] The first water supply valve is a normally open valve, and the second water supply valve is a pneumatic valve. The amount of water supplied to the furnace top is adjusted according to the furnace top temperature, and it is closed when not in use.

[0022] Under normal water-jetting conditions, the steam valve 22 for shutdown, the electric steam valve 23 for shutdown, the first pneumatic valve 31, the electric valve 3, and the second pneumatic valve 32 are normally closed. The water-jetting valve 12 and the water flow regulating valve 13 are normally open. The water flow rate is adjusted by the water flow regulating valve 13. Specifically, water jetting at the furnace top can be performed according to the data from the corresponding flow meter.

[0023] Both the first steam valve and the second steam valve are in the closed state during normal production.

[0024] The first branch valve and the second branch valve are respectively the first pneumatic valve 31 and the second pneumatic valve 32. The first pneumatic valve 31 and the second pneumatic valve 32 are pneumatic valves connecting the high-pressure water and steam pipelines, serving as both isolation and connection functions. The electric valve 3 is an electric valve made of stainless steel, serving to check whether the first pneumatic valve 31 and the second pneumatic valve 32 are tight and to provide isolation.

[0025] The first and second branch valves are normally closed during production. When the water supply is insufficient, both valves open. Specifically, by opening the first pneumatic valve 31, the second pneumatic valve 32, and the steam valve 22 for shutdown, a new water supply (steam pipe) passage is created, solving the water supply problem. During this process, the electric valve remains open.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A water injection protection device for a blast furnace top, characterized in that, The blast furnace body high-pressure water feeding pipeline and the steam source pipeline are included, the output end of the high-pressure water feeding pipeline is a water gun, the output end of the steam source pipeline is a steam joint, the water gun and the steam joint are arranged on the blast furnace top, the first feeding valve and the second feeding valve are arranged on the blast furnace body high-pressure water feeding pipeline, the first steam valve and the second steam valve are arranged on the steam source pipeline, the feeding pipeline between the first feeding valve and the second feeding valve is communicated with the steam pipeline between the first steam valve and the second steam valve, and the communication branch is arranged on the feeding pipeline and the steam pipeline.

2. The top water protection device for blast furnace according to claim 1, characterized in that, The middle section of the high-pressure water feeding pipeline is a water gun feeding ring pipe wound on the blast furnace.

3. The water protection device for the top of a blast furnace according to claim 1, characterized by The middle section of the steam source pipeline is a steam ring pipe pipeline wound on the blast furnace.

4. The top water protection device for blast furnace according to claim 1, characterized in that, The first feeding valve is a normally open valve, and the second feeding valve is a pneumatic valve, the water quantity of the blast furnace top is adjusted according to the blast furnace top temperature, and the second feeding valve is in a closed state when not used.

5. The top water protection device for blast furnace according to claim 1, characterized in that, The first steam valve and the second steam valve are in a closed state in normal production.

6. The top water injection protection device for blast furnace according to claim 1, characterized in that, The first branch valve and the second branch valve are in a normally closed state in normal production, and the first branch valve and the second branch valve are in an open state when the water quantity is insufficient.

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