Blast furnace soft water circulating water cooling device

Abstract

The utility model relates to the technical field of blast furnace soft water circulation water cooling, and discloses a blast furnace soft water circulation water cooling device which comprises a tower body, two cooling air ducts connected in the tower body, an air supply pipe communicated with one of the cooling air ducts, coil pipes connected to the outer sides of the two cooling air ducts, and a water outlet pipe connected with the two coil pipes. The two spiral sheets are arranged in the cooling air channel, so that air flow enters the cooling air channel and is guided by the spiral sheets, and compared with direct passing, the staying time of the air flow in the cooling air channel is prolonged, so that heat flow in the coil pipe is fully contacted with the slow-flowing air flow, the contact time is prolonged, and the cooling efficiency is improved. Furthermore, the heat exchange time is prolonged, the heat exchange effect is better, the heat dissipation effect of the blast furnace is improved, the structure is simple, operation is convenient, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of BF soft water circulation water cooling, in particular to a BF soft water circulation water cooling device. Background Art

[0002] The cooling system of blast furnace can be divided into: industrial water cooling, soft water cooling, and vaporization cooling. At present, a considerable number of blast furnaces at home and abroad still adopt industrial water cooling. However, the hardness, suspended solids and some sundries in industrial water are extremely easy to scale and block pipelines in the cooler channels, directly affecting the cooling effect of the blast furnace, and are important reasons for causing the overheating and burning of the cooler. Therefore, the existing technology adopts a soft water circulation water cooling system to cool the blast furnace.

[0003] At present, the patent with the publication number of CN212205739U discloses a BF soft water circulation water cooling device, which includes a fan, a tower body, a drain pipe, a water inlet pipe, a first heat dissipation pipe and a second heat dissipation pipe. Two connecting plates are respectively fixed on both sides of the top of the inner wall of the tower body. Fixed rings are respectively fixed on the opposite sides of the two connecting plates. The tops of the first heat dissipation pipe and the second heat dissipation pipe are respectively fixedly connected with the fixed rings. Coils are sleeved on both the first heat dissipation pipe and the second heat dissipation pipe. The bottoms of the two coils are respectively communicated with the water inlet pipe through three-way parts. The tops of the two coils are respectively communicated with the drain pipe through three-way parts. Air pipes are respectively fixed at the bottoms of the first heat dissipation pipe and the second heat dissipation pipe, and the air pipes are communicated with the fan. This device has the advantages of splitting the soft water, improving the soft water heat dissipation efficiency, accelerating the air flow in the heat dissipation pipe, and accelerating the heat dissipation.

[0004] Although the above device solves the problem of poor soft water heat dissipation efficiency, there are still the following deficiencies:

[0005] Although the soft water is wound around the outside of the heat dissipation pipe through the coil, the cold water flows at a certain speed, and the cold air stays in the pipeline for a very short time, resulting in poor heat exchange effect between the hot water and the cold air. Content of the Utility Model

[0006] Aiming at the deficiencies of the existing technology, the utility model provides a BF soft water circulation water cooling device, which enables a better heat exchange effect between the hot water and the cold air and improves the heat exchange efficiency.

[0007] To achieve the above object, the utility model provides the following technical solution: a BF soft water circulation water cooling device, which includes a tower body, two cooling air ducts connected in the tower body, an air supply pipe communicated with one of the cooling air ducts, coils connected to the outside of the two cooling air ducts, and a water outlet pipe connected to the two coils. Two spiral fins are respectively fixedly connected to the two cooling air ducts, and the two spiral fins are symmetrically arranged. An air inlet pipe is fixedly connected to the top of the cooling air duct, and the air inlet pipe is communicated with the cooling air duct. One end of the air inlet pipe penetrates through the outside of the tower body. A dispersing part is connected in the two cooling air ducts.

[0008] Further, the dispersing member includes a trapezoidal block fixedly connected inside the cooling air duct. A plurality of air grooves are penetrated through the trapezoidal block. The top of the air groove is communicated with the air inlet pipe, and the bottom is communicated with the cooling air duct.

[0009] Further, an anti-flushing assembly is connected between the two air inlet pipes. The anti-flushing assembly includes a connecting pipe and an anti-water pipe. A connecting pipe is communicated between the two air inlet pipes. An extension pipe is communicated on the outer side of the connecting pipe. A water pump is fixedly installed between the extension pipe and the anti-water pipe. The anti-water pipe is fixedly connected to the outer side of the water outlet pipe.

[0010] Further, a second electromagnetic valve is fixedly installed on the outer side of the anti-water pipe.

[0011] Further, a first electromagnetic valve is fixedly installed on the outer side of the air supply pipe, and a flushing drain pipe is fixedly installed on the outer wall of the air supply pipe.

[0012] Further, the coil pipe is arranged as a flat pipe.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] By arranging two spiral fins in the cooling air duct, the present utility model enables the air flow to be guided by the spiral fins when entering the cooling air duct. Compared with direct passage, the residence time of the air flow in the cooling air duct is prolonged. Thus, the heat flow in the coil pipe can be fully contacted with the slow-flowing air flow, the contact time is increased, the heat exchange time is further prolonged, and the heat exchange effect is better. Furthermore, the heat dissipation effect of the blast furnace is improved. The structure is simple, the operation is convenient, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic perspective view of the overall structure of the present utility model;

[0016] Figure 2 is a schematic perspective view of the cooling air duct and the coil pipe of the present utility model;

[0017] Figure 3 is a schematic perspective view of another state of the cooling air duct of the present utility model;

[0018] Figure 4 is a schematic cross-sectional perspective view of the cooling air duct of the present utility model;

[0019] Figure 5 is a schematic perspective view of two coil pipes of the present utility model;

[0020] Figure 6 is this Figure 3 magnified schematic perspective view of A in the middle.

[0021] In the figure: 1. Tower body; 2. Air supply pipe; 201. Flushing drain pipe; 3. Air inlet pipe; 4. Water outlet pipe; 5. Coil; 6. Cooling air duct; 7. Return water pipe; 8. Connecting pipe; 9. First solenoid valve; 10. Spiral fin; 11. Trapezoidal block; 12. Air chute; 13. Extension pipe; 14. Water pump; 15. Second solenoid valve. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] As Figures 1 to 6 shown, a blast furnace soft water circulation water cooling device includes a tower body 1, two cooling air ducts 6 connected in the tower body 1, an air supply pipe 2 communicated with one of the cooling air ducts 6, a coil 5 connected to the outer sides of the two cooling air ducts 6, and a water outlet pipe 4 connected to the two coils 5. Two spiral fins 10 are fixedly connected to both cooling air ducts 6. The two spiral fins 10 are symmetrically arranged. The top of the cooling air duct 6 is fixedly connected with an air inlet pipe 3. The air inlet pipe 3 is communicated with the cooling air duct 6. One end of the air inlet pipe 3 penetrates the outside of the tower body 1. A dispersing member is connected in the two cooling air ducts 6.

[0024] As Figure 1 shown, the blast furnace soft water circulation water cooling device in the present utility model is similar in structure to an existing blast furnace soft water circulation water cooling device. For example, a patent with the publication number CN212205739U discloses a blast furnace soft water circulation water cooling device. The main improvement point of the present utility model is to make the heat exchange effect between hot water and cold air better and improve the heat exchange efficiency. As Figures 1 to 6 shown, when the blast furnace soft water circulation water cooling device in the present utility model is in use, after the hot water exchanged with the blast furnace is input into the coil 5 through the water inlet pipe, the external fan starts to draw air, so that natural air is drawn into the cooling air duct 6 through the air inlet pipe 3. Two symmetric spiral fins 10 are arranged in the cooling air duct 6. Therefore, after the air flow enters the spiral fins 10, it will be guided as much as possible by the spiral fins 10, so that the cold air stays in the cooling air duct 6 for an extended time. As a result, the heat flow in the coil 5 is fully contacted with the slow-flowing air flow, increasing the contact time, further increasing the heat exchange time, and thus making the heat exchange effect better.

[0025] By arranging two spiral vanes 10 in the cooling air duct 6, the air flow entering the cooling air duct 6 will be guided by the spiral vanes 10. Compared with passing directly through, the residence time of the air flow in the cooling air duct 6 is extended. As a result, the heat flow in the coil 5 is fully contacted with the slowed-down air flow, increasing the contact time and further increasing the heat exchange time, thereby making the heat exchange effect better and further improving the heat dissipation effect of the blast furnace.

[0026] As Figure 3 shown, the dispersing member includes a trapezoidal block 11. The trapezoidal block 11 is fixedly connected inside the cooling air duct 6. A number of air grooves 12 are penetrated through the trapezoidal block 11. The top of the air groove 12 is communicated with the air inlet pipe 3, and the bottom is communicated with the cooling air duct 6.

[0027] Specifically, when the air flow passes through the air inlet pipe 3, it will pass through a number of air grooves 12 in the trapezoidal block 11. And the air grooves 12 are inclined to guide and disperse the drawn-in air flow so that it will not directly pour into the central position between the two spiral vanes 10.

[0028] As Figure 2 、 Figure 3 、 Figure 5 and Figure 6 shown, a backwashing assembly is connected between the two air inlet pipes 3. The backwashing assembly includes a connecting pipe 8 and a backwater pipe 7. A connecting pipe 8 is communicated between the two air inlet pipes 3. An extension pipe 13 is communicated on the outer side of the connecting pipe 8. A water pump 14 is fixedly installed between the extension pipe 13 and the backwater pipe 7. The backwater pipe 7 is fixedly connected to the outer side of the water outlet pipe 4.

[0029] As Figure 5 shown, a second electromagnetic valve 15 is fixedly installed on the outer side of the backwater pipe 7.

[0030] As Figure 2 and Figure 3 shown, a first electromagnetic valve 9 is fixedly installed on the outer side of the air supply pipe 2. A flushing drain pipe 201 is fixedly installed on the outer wall of the air supply pipe 2.

[0031] Specifically, when the cooling air duct 6 has been cooling for a period of time, dust will adhere to the inner wall, which will lead to a reduction in the heat exchange effect, thereby affecting the heat exchange efficiency and further affecting the heat dissipation of the blast furnace. At this time, the backwashing assembly can be used for flushing.

[0032] Close the hot water inlet pipe in the water cycle, open the reverse water pipe 7 through the second solenoid valve 15, and start the water pump 14, so that the reverse water pipe 7 draws the water in the outlet pipe 4 into the connecting pipe 8 in the reverse direction. The connecting pipe 8 is communicated with the air inlet pipe 3. Therefore, the water source will enter the air duct 12 in the trapezoidal block 11 in the cooling air duct 6. The air duct 12 guides and disperses the water source. At the same time, close the air supply pipe 2 through the first solenoid valve 9 to isolate it from the fan. At this time, the backwashing pipeline is formed. During the washing process, the water source will flow out from the washing drain pipe 201;

[0033] A closing valve can be connected to the outside of the washing drain pipe 201. After closing the washing drain pipe 201, the inside of the cooling air duct 6 can be soaked to make the cleaning effect better;

[0034] The backwashing assembly can also be connected to the hot water inlet end after the blast furnace heat exchange, so that the water for backwashing is hot water, which can also improve the cleaning effect.

[0035] After the washing is completed, open the first solenoid valve 9 to ensure the smoothness of the air supply pipe 2, and close the second solenoid valve 15 and the water pump 14 to ensure the normal use of the cooling water circulation system.

[0036] The air flow of the fan can also be used to air-dry the water stains after the cleaning of the cooling air duct 6.

[0037] Using the backwashing assembly, the dust in the cooling air duct 6 can be cleaned thoroughly to ensure the heat exchange effect of the cooling air duct 6.

[0038] Such as Figure 2 、 Figure 3 and Figure 4 As shown, the coil 5 is arranged as a flat tube. By setting the original disc tube 5 as a flat tube, the contact area between the coil 5 and the outer wall of the cooling air duct 6 can be increased, and the heat exchange effect can be further improved.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A blast furnace soft water circulation water cooling device, comprising a tower body (1), two cooling air ducts (6) connected inside the tower body (1), an air supply pipe (2) communicated with one of the cooling air ducts (6), a coil pipe (5) connected to the outer sides of the two cooling air ducts (6), and a water outlet pipe (4) connected to the two coil pipes (5), characterized in that, Two of the cooling air ducts (6) are fixedly connected with two spiral fins (10). The two spiral fins (10) are symmetrically arranged. The top of the cooling air duct (6) is fixedly connected with an air inlet pipe (3). The air inlet pipe (3) is communicated with the cooling air duct (6). One end of the air inlet pipe (3) penetrates through the outside of the tower body (1). A dispersing member is connected inside the two cooling air ducts (6).

2. The blast furnace soft water circulation water cooling device according to claim 1, wherein The dispersing member includes a trapezoidal block (11). The trapezoidal block (11) is fixedly connected inside the cooling air duct (6). A number of air grooves (12) are arranged through the trapezoidal block (11). The top of the air groove (12) is communicated with the air inlet pipe (3), and the bottom is communicated with the cooling air duct (6).

3. The blast furnace soft water circulation water cooling device according to claim 1 or 2, characterized in that, An anti-flushing assembly is connected between the two air inlet pipes (3). The anti-flushing assembly includes a connecting pipe (8) and an anti-water pipe (7). A connecting pipe (8) is communicated between the two air inlet pipes (3). An extension pipe (13) is communicated with the outside of the connecting pipe (8). A water pump (14) is fixedly installed between the extension pipe (13) and the anti-water pipe (7). The anti-water pipe (7) is fixedly connected with the outside of the water outlet pipe (4).

4. A blast furnace soft water circulation water cooling device according to claim 3, characterized in that, A second solenoid valve (15) is fixedly installed on the outside of the anti-water pipe (7).

5. A blast furnace soft water circulation water cooling device according to claim 1, 2 or 4, characterized in that, A first solenoid valve (9) is fixedly installed on the outside of the air supply pipe (2). A flushing drain pipe (201) is fixedly installed on the outer wall of the air supply pipe (2).

6. The blast furnace soft water circulation water cooling device according to claim 3, characterized in that, A first solenoid valve (9) is fixedly installed on the outside of the air supply pipe (2). A flushing drain pipe (201) is fixedly installed on the outer wall of the air supply pipe (2).

7. A blast furnace soft water circulation water cooling device according to claim 1, 2, 4 or 6, characterized in that, The coil pipe (5) is arranged as a flat pipe.

8. The blast furnace soft water circulation water cooling device according to claim 3, characterized in that, The coil pipe (5) is arranged as a flat pipe.

9. The blast furnace soft water circulation water cooling device according to claim 5, characterized in that, The coil pipe (5) is arranged as a flat pipe.

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