A hot blast stove air charging device

Abstract

The utility model relates to the field of ironmaking equipment, concretely relates to a hot blast stove inflation device, including high pressure gas holder, air compressor, dryer, gas pipeline, control system and gas holder pressure control module, air compressor is connected with the dryer, the dryer is connected with high pressure gas holder, is provided with pressure detector in high pressure gas holder, gas holder pressure control module is connected with pressure detector and air compressor, and gas pipeline is provided with flow detection instrument, is provided with pressure regulating valve group on gas pipeline, and pressure regulating valve group is connected with control system. The utility model adopts the high pressure gas holder of external to charge pressure for hot blast stove, eliminates blast fluctuation.

Description

Technical Field

[0001] This utility model relates to the field of ironmaking equipment, specifically to a hot blast stove gas filling device. Background Technology

[0002] Hot blast stoves are an indispensable key piece of equipment in steelmaking blast furnace systems. Their core function is to maintain a high-temperature environment inside the blast furnace by heating the blast air, thereby ensuring the smooth progress of the ironmaking process. The main function of hot blast stoves is to heat the ambient temperature air blown into the blast furnace to a high temperature (usually up to 1000-1300℃), and then send it into the hearth section of the blast furnace through the pipeline system. This process solves the problem that directly blowing in ambient temperature air will cause a sharp drop in the furnace temperature.

[0003] However, conventional blower pressurization and furnace replacement can easily cause blast furnace blast fluctuations. Therefore, it is necessary to design a hot blast stove gas charging device to reduce blast furnace blast fluctuations. Summary of the Invention

[0004] The purpose of this invention is to provide a hot blast stove gas filling device, which has the advantage of reducing blast furnace blast fluctuations.

[0005] The technical solution adopted is as follows:

[0006] A hot air furnace gas filling device includes a high-pressure gas storage tank, an air compressor, a dryer, a gas transmission pipeline, a control system, and a gas storage tank pressure control module. The air compressor is connected to the dryer, the dryer is connected to the high-pressure gas storage tank, a pressure detector is installed inside the high-pressure gas storage tank, the gas storage tank pressure control module is connected to both the pressure detector and the air compressor, a flow detector is installed on the gas transmission pipeline, a pressure regulating valve group is installed on the gas transmission pipeline, and the pressure regulating valve group is connected to the control system.

[0007] Preferably, the pressure regulating valve group includes a primary pressure reducing valve group and a secondary pressure reducing valve group connected in series.

[0008] Preferably, the high-pressure gas storage tank is a spherical gas storage tank.

[0009] Preferably, the dryer is an adsorption-type compressed air dryer.

[0010] Preferably, the control system is a PLC1500 system.

[0011] Compared to existing technologies, the advantages are:

[0012] 1. An external high-pressure gas storage tank is used to pressurize the hot blast stove, eliminating air fluctuations. The pressurization method with small pressure difference and large flow rate shortens the pressurization time by more than 50%, which has the advantage of significantly reducing the furnace changeover time.

[0013] 2. A pressure detector is installed inside the high-pressure air storage tank. The air storage tank pressure control module is connected to both the pressure detector and the air compressor. When the pressure inside the high-pressure air storage tank decreases, the air compressor starts to fill the high-pressure air storage tank with air. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a hot air furnace air filling device according to this utility model.

[0015] Figure 2 This is a top view schematic diagram of the air filling device for a hot air furnace according to this utility model.

[0016] In the diagram: 1. High-pressure air tank; 2. Air compressor; 3. Dryer; 4. Air pipeline; 5. Control system; 6. Pressure detector; 7. Flow detector; 8. Primary pressure reducing valve assembly; 9. Secondary pressure reducing valve assembly; 10. Air tank pressure control module. Detailed Implementation

[0017] The present invention will be further described below with reference to specific embodiments, such as... Figures 1 to 2 As shown:

[0018] Example 1: A hot air furnace gas filling device includes a high-pressure gas storage tank 1, an air compressor 2, a dryer 3, a gas transmission pipeline 4, a control system 5, and a gas storage tank pressure control module 10. The air compressor 2 is connected to the dryer 3, and the dryer 3 is connected to the high-pressure gas storage tank 1. The high-pressure air generated by the air compressor 2 is dried by the dryer 3 and then transported to the high-pressure gas storage tank 1. The high-pressure gas storage tank 1 stores the high-pressure air, and a pressure detector 6 is installed inside the high-pressure gas storage tank 1.

[0019] The pressure detector 6 monitors the air pressure inside the high-pressure air tank 1. The air tank pressure control module 10 is connected to both the pressure detector 6 and the air compressor 2. When the pressure inside the high-pressure air tank 1 decreases, the pressure detector 6 sends a signal to the air tank pressure control module 10. The air tank pressure control module 10 then controls the air compressor 2 to start filling the high-pressure air tank 1 with air until the pressure inside the high-pressure air tank 1 returns to its initial value. After that, the air tank pressure control module 10 controls the air compressor 2 to shut down.

[0020] The gas pipeline 4 is equipped with a flow meter 7, which is used to detect the amount of gas passing through the gas pipeline 4. The flow meter 7 is connected to the control system 5 to facilitate monitoring of the output gas volume. The gas pipeline 4 is equipped with a pressure regulating valve group, which is connected to the control system 5. The control system 5 controls the pressure regulating valve group to regulate and stabilize the pressure.

[0021] Example 2: A hot air furnace air filling device includes a high-pressure air storage tank 1, an air compressor 2, a dryer 3, an air supply pipeline 4, a control system 5, and an air storage tank pressure control module 10. The air compressor 2 is connected to the dryer 3, and the dryer 3 is connected to the high-pressure air storage tank 1. The high-pressure air storage tank 1 is a spherical air storage tank. The high-pressure air generated by the air compressor 2 is dried by the dryer 3 and then transported to the high-pressure air storage tank 1. The dryer 3 is an adsorption type compressed air dryer. The high-pressure air storage tank 1 stores high-pressure air. A pressure detector 6 is installed inside the high-pressure air storage tank 1. The control system 5 is a PLC1500 system.

[0022] The pressure detector 6 monitors the air pressure inside the high-pressure air tank 1. The air tank pressure control module 10 is connected to both the pressure detector 6 and the air compressor 2. When the pressure inside the high-pressure air tank 1 decreases, the pressure detector 6 sends a signal to the air tank pressure control module 10. The air tank pressure control module 10 then controls the air compressor 2 to start filling the high-pressure air tank 1 with air until the pressure inside the high-pressure air tank 1 returns to its initial value. After that, the air tank pressure control module 10 controls the air compressor 2 to shut down.

[0023] The gas pipeline 4 is equipped with a flow meter 7, which is used to detect the amount of gas passing through the gas pipeline 4. The flow meter 7 is connected to the control system 5 to facilitate monitoring of the output gas volume. The gas pipeline 4 is equipped with a pressure regulating valve group, which includes a primary pressure reducing valve group 8 and a secondary pressure reducing valve group 9 connected in series. The pressure regulating valve group is connected to the control system 5, and the control system 5 controls the pressure regulating valve group to regulate and stabilize the pressure.

[0024] The working principle is as follows:

[0025] High-pressure air is generated by air compressor 2, dried by dryer 3, and then delivered to high-pressure air storage tank 1 until the air pressure in high-pressure air storage tank 1 reaches the set pressure value. When supplying air to the hot air furnace, the high-pressure air in high-pressure air storage tank 1 is discharged from air delivery pipe 4. The air delivery volume is detected by flow meter 7. Control system 5 controls pressure regulating valve group to regulate pressure, reduce air flow fluctuations, and shorten pressurization time. When the pressure in high-pressure air storage tank 1 decreases, pressure meter 6 sends a signal to air storage tank pressure control module 10. Air storage tank pressure control module 10 controls air compressor 2 to start and pressurize high-pressure air storage tank 1 until the pressure in high-pressure air storage tank 1 returns to the initial pressure. Then, air storage tank pressure control module 10 controls air compressor 2 to shut down.

[0026] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A hot blast stove aeration device, characterized by: It includes a high-pressure air storage tank (1), an air compressor (2), a dryer (3), an air transmission pipeline (4), a control system (5), and an air storage tank pressure control module (10). The air compressor (2) is connected to the dryer (3), and the dryer (3) is connected to the high-pressure air storage tank (1). A pressure detector (6) is installed inside the high-pressure air storage tank (1). The air storage tank pressure control module (10) is connected to both the pressure detector (6) and the air compressor (2). A flow detector (7) is installed on the air transmission pipeline (4). A pressure regulating valve group is installed on the air transmission pipeline (4), and the pressure regulating valve group is connected to the control system (5).

2. The hot blast furnace gas filling device as described in claim 1, characterized in that: The pressure regulating valve group includes a primary pressure reducing valve group (8) and a secondary pressure reducing valve group (9) connected in series.

3. The hot blast furnace gas filling device as described in claim 1, characterized in that: The high-pressure gas storage tank (1) is a spherical gas storage tank.

4. The hot blast furnace gas filling device as described in claim 1, characterized in that: The dryer (3) is an adsorption type compressed air dryer.

5. The hot blast furnace gas filling device as described in claim 1, characterized in that: The control system (5) is a PLC1500 system.

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