A high-pressure backwater pipeline anti-air blockage water connection device for blast furnace

Abstract

The utility model discloses a blast furnace high pressure backwater pipeline air resistance water series device, including backwater tank, backwater pipe is installed to backwater tank lower extreme, backwater expansion tank is installed to backwater pipe lower extreme, the drain pipe is installed to backwater expansion tank lower extreme, the degassing tank is installed in backwater expansion tank, one side is installed in backwater expansion tank upper end and is inclined exhaust pipe, the inclined exhaust pipe export end reaches the above of backwater tank, the arc pipe is installed to the inclined exhaust pipe export end. The utility model has the advantages that the water of backwater pipe is received through the degassing tank, then makes the water flow to the backwater expansion tank, can make the air release to the above completely, then when discharging the water through the drain pipe, does not carry the air, guarantees the effect of degassing, when discharging the air and the water through the inclined exhaust pipe, can make the water flow along the side wall of exhaust pipe, and then can avoid the air, can discharge the air fast.

Description

Technical Field

[0001] This utility model relates to the technical field of blast furnace cooling equipment, and more specifically, to a device for preventing air blockage and water leakage in a blast furnace high-pressure return water pipeline. Background Technology

[0002] Previously designed high-pressure return water pipelines for blast furnaces only had return water pipes installed at the bottom of the water tank, without a degassing device in the middle. This easily caused air resistance during operation, which not only affected the water volume and temperature, causing damage to the blast furnace cooling equipment, but also increased the water vapor pressure in the high-pressure return water pipeline, causing splashing at the outlet of the return water pipeline and a large amount of cooling water overflowing, affecting the on-site environment and wasting resources.

[0003] In the prior art, for example, patent application number CN202422887970.X, entitled "Anti-Gas Resistance Spraying Structure for Blast Furnace Cooling Return Water Pipe," solves the problem of cooling water overflow and spraying caused by air masses entering the return water tank by installing a gas collection and release pipe at the lower end of the return water pipe, which collects the gas in the return water pipe and then discharges it through the gas collection and release pipe. However, it has some problems in use. When water in the return water tank enters the gas collection and release pipe, some air will also fall below the water surface. When water is discharged through the second return water pipe, some water is easily carried into the second return water pipe, making it impossible to completely discharge the air. Furthermore, when air is discharged through the exhaust pipe, since the exhaust pipe is vertical, the water moves slowly under the action of gravity when air and water are discharged upwards, which will affect the air discharge. Utility Model Content

[0004] The purpose of this invention is to solve the problem of poor air exhaust effect by designing a device to prevent air blockage and water leakage in the high-pressure return water pipeline of a blast furnace.

[0005] To achieve the above objectives, the technical solution of this utility model is a device for preventing gas blockage and water leakage in a blast furnace high-pressure return water pipeline, comprising a return water tank, a return water pipe installed at the lower end of the return water tank, a return water expansion tank installed at the lower end of the return water pipe, a drain pipe installed at the lower end of the return water expansion tank, a degassing tank installed inside the return water expansion tank, the degassing tank being able to collect water discharged from the lower end of the return water pipe, an inclined exhaust pipe installed on one side of the upper end of the return water expansion tank, the outlet end of the inclined exhaust pipe extending above the return water tank, and an arc-shaped pipe installed at the outlet end of the inclined exhaust pipe, the opening end of the arc-shaped pipe pointing downwards.

[0006] Furthermore, a drainage notch is provided on one side of the upper end of the degassing box, and the drainage notch and the drainage pipe are located at different positions on both sides of the degassing box.

[0007] Furthermore, an inclined water guiding channel is installed on the inclined exhaust pipe. The inclined water guiding channel is installed below the inclined exhaust pipe. Multiple water guiding holes are opened between the inclined water guiding channel and the inclined exhaust pipe. A one-way valve is installed at the lower end of the inclined water guiding channel. The outlet end of the one-way valve is connected to the return water expansion tank.

[0008] Furthermore, a clearance opening is provided on one side of the lower end of the return water tank, through which the inclined exhaust pipe and the inclined water guide channel pass, and the contact position between the clearance opening and the inclined exhaust pipe is sealed.

[0009] Furthermore, the tilt angle of the inclined exhaust pipe is between 40 and 50 degrees.

[0010] The beneficial effects of this utility model are as follows: The water discharged from the return water pipe is collected by the degassing box, and then the water flows into the return water expansion tank, which allows the air to be completely released to the top. When the water is discharged through the drain pipe, no air is carried in, ensuring the degassing effect. When the air and water are discharged through the inclined exhaust pipe, the water can flow along the side wall of the exhaust pipe, thus avoiding the air and quickly expelling the air. When the air pressure is insufficient to discharge the water to the outside, under the action of gravity, the water can flow downward along the inner wall of the inclined exhaust pipe, and the air can be avoided, resulting in a better exhaust effect. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the anti-gas blockage and water leakage device for the high-pressure return water pipeline of a blast furnace according to the present invention; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; In the diagram, 1 is the return water tank; 2 is the return water pipe; 3 is the return water expansion tank; 4 is the drain pipe; 5 is the degassing tank; 6 is the inclined exhaust pipe; 7 is the arc-shaped pipe; 8 is the drain gap; 9 is the inclined water guide channel; 10 is the water guide hole; 11 is the one-way valve; and 12 is the clearance opening. Detailed Implementation

[0012] 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.

[0013] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0014] This utility model provides, for example Figure 1-2 The device shown is a gas-blocking and water-crossing prevention device for a high-pressure return water pipeline in a blast furnace. It includes a return water tank 1, a return water pipe 2 installed at the lower end of the return water tank 1, a return water expansion tank 3 installed at the lower end of the return water pipe 2, a drain pipe 4 installed at the lower end of the return water expansion tank 3, a degassing tank 5 installed inside the return water expansion tank 3, the degassing tank 5 can hold the water discharged from the lower end of the return water pipe 2, and an inclined exhaust pipe 6 installed on one side of the upper end of the return water expansion tank 3. The outlet end of the inclined exhaust pipe 6 extends above the return water tank 1, and an arc-shaped pipe 7 is installed at the outlet end of the inclined exhaust pipe 6. The opening end of the arc-shaped pipe 7 points downward.

[0015] The venting process of this device is as follows: High-pressure water in the return water tank 1 carries air through the return water pipe 2 into the return water expansion tank 3, and then the water is collected by the degassing tank 5. The water falling into the degassing tank 5 will fall from the top of the degassing tank 5 into the return water expansion tank 3. The air can float at the top of the return water expansion tank 3, and then the water can be discharged through the drain pipe 4 to prevent air from being carried. The air at the top of the return water expansion tank 3 carrying some water can be discharged through the inclined vent pipe 6, and then discharged into the return water tank 1 through the arc pipe 7 to prevent water waste. In addition, the water flows along the side wall in the inclined vent pipe 6, which can avoid the air and improve the venting effect.

[0016] Refer to the instruction manual appendix Figure 1 The degassing box 5 has a drain gap 8 on one side of the upper end. The drain gap 8 and the drain pipe 4 are located at different positions on both sides of the degassing box 5. When the water discharged from the drain gap 8 flows in the return water expansion tank 3, it can cause the air to float up, preventing the water discharged from the drain gap 8 from carrying some air directly through the drain pipe 4.

[0017] Refer to the instruction manual appendix Figure 1 Included with instruction manual Figure 2An inclined water guide channel 9 is installed on the inclined exhaust pipe 6. The inclined water guide channel 9 is installed below the inclined exhaust pipe 6. Multiple water guide holes 10 are opened between the inclined water guide channel 9 and the inclined exhaust pipe 6. A one-way valve 11 is installed at the lower end of the inclined water guide channel 9. The outlet end of the one-way valve 11 is connected to the return water expansion tank 3. When the air pressure in the return water expansion tank 3 is insufficient to completely discharge the water in the inclined exhaust pipe 6, the water can fall inside the inclined exhaust pipe 6, and then enter the inclined water guide channel 9 through the water guide holes 10. Finally, it enters the return water expansion tank 3 through the one-way valve 11. This can avoid air and ensure the exhaust effect.

[0018] Refer to the instruction manual appendix Figure 1 Included with instruction manual Figure 2 A clearance opening 12 is provided on one side of the lower end of the return water tank 1. The inclined exhaust pipe 6 and the inclined water guiding channel 9 pass through the clearance opening 12. The contact position between the clearance opening 12 and the inclined exhaust pipe 6 is sealed, which allows the inclined exhaust pipe 6 and the inclined water guiding channel 9 to pass through the inside of the return water tank 1, thereby reducing the size of the return water expansion tank 3.

[0019] Refer to the instruction manual appendix Figure 1 Included with instruction manual Figure 2 The inclined exhaust pipe 6 has an inclination angle between 40 and 50 degrees, which facilitates the discharge of air and water and shortens the length of the inclined exhaust pipe 6.

[0020] Although the present invention 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 of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for preventing gas blockage and water leakage in a high-pressure return water pipeline of a blast furnace, comprising a return water tank (1), a return water pipe (2) installed at the lower end of the return water tank (1), a return water expansion tank (3) installed at the lower end of the return water pipe (2), and a drain pipe (4) installed at the lower end of the return water expansion tank (3), characterized in that, The return water expansion tank (3) is equipped with a degassing tank (5). The degassing tank (5) can hold the water discharged from the lower end of the return water pipe (2). An inclined exhaust pipe (6) is installed on one side of the upper end of the return water expansion tank (3). The outlet end of the inclined exhaust pipe (6) extends above the return water tank (1). An arc-shaped pipe (7) is installed at the outlet end of the inclined exhaust pipe (6). The opening end of the arc-shaped pipe (7) points downward.

2. The device for preventing gas blockage and water leakage in a blast furnace high-pressure return water pipeline according to claim 1, characterized in that, The degassing box (5) has a drainage notch (8) on one side of its upper end. The drainage notch (8) and the drain pipe (4) are located at different positions on both sides of the degassing box (5).

3. The device for preventing gas blockage and water leakage in a blast furnace high-pressure return water pipeline according to claim 1, characterized in that, An inclined water guide channel (9) is installed on the inclined exhaust pipe (6). The inclined water guide channel (9) is installed below the inclined exhaust pipe (6). Multiple water guide holes (10) are opened between the inclined water guide channel (9) and the inclined exhaust pipe (6). A one-way valve (11) is installed at the lower end of the inclined water guide channel (9). The outlet end of the one-way valve (11) is connected to the return water expansion tank (3).

4. The device for preventing gas blockage and water leakage in a blast furnace high-pressure return water pipeline according to claim 3, characterized in that, The return water tank (1) has a relief opening (12) on one side of its lower end. The inclined exhaust pipe (6) and the inclined water guide channel (9) pass through the relief opening (12). The contact position between the relief opening (12) and the inclined exhaust pipe (6) is sealed.

5. The device for preventing gas blockage and water leakage in a blast furnace high-pressure return water pipeline according to claim 3, characterized in that, The tilt angle of the inclined exhaust pipe (6) is between 40 and 50 degrees.

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