Cooling flue of smelting furnace

Abstract

The utility model discloses a cooling flue of a smelting furnace, which comprises a smoke inlet hood and a flue pipe, the flue pipe is welded above a hood opening of the smoke inlet hood in an intercommunication manner, the cooling flue of the smelting furnace further comprises a cooling mechanism, and the cooling mechanism is arranged at the position of the flue pipe of the existing smelting furnace. According to the cooling mechanism, a corrugated heat conduction pipe, a corrugated smoke guide pipe and a connecting ring are combined into a hollow pipe for smoke passing and primary water passing, the heat exchange area during smoke cooling is effectively increased, cooling water flows in a hollow pipe cavity between the corrugated heat conduction pipe and the corrugated smoke guide pipe, heat in smoke can be fully absorbed, the cooling efficiency of the smoke is improved, and the service life of the cooling mechanism is prolonged. And a secondary water passing structure is further arranged at the position, where the hollow pipe is located, of the middle connecting pipe, secondary water passing heat exchange can be carried out on the heat at the position of the hollow pipe, efficient cooling of smoke is carried out after heat exchange cooling of the hollow pipe is assisted, and efficient cooling of the smoke before the smoke is discharged to follow-up smoke treatment equipment from a smelting furnace is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to smelting furnace technical field especially relates to a smelting furnace cooling flue. BACKGROUND

[0002] Smelting furnace refers to the device that melts metal ingot and some scrap metal and adds necessary alloy component, and smelts them into required alloy through slagging, refining and other operations, and the smelting furnace cooling flue is an important component in the smelting furnace system, and its main function is to cool high-temperature flue gas and deliver it to subsequent processing equipment.

[0003] The smelting furnace cooling flue of prior art usually sets up cooling pipeline with water at the flue to collect and cool flue gas, but the pipe body structure of such flue is relatively simple, and its cooling efficiency for flue gas is low after heat collection, which leads to high flue gas temperature discharged from the flue to subsequent flue gas processing equipment, and is not conducive to subsequent processing of flue gas discharged from the smelting furnace, therefore, we propose a smelting furnace cooling flue. SUMMARY

[0004] The main purpose of the utility model is to provide a smelting furnace cooling flue, which sets up a cooling mechanism at the flue pipe of the existing smelting furnace, and the cooling mechanism is composed of a wave-shaped heat guide pipe, a wave-shaped smoke guide pipe and a hollow pipe combined by links for smoke passing and water passing, which effectively increases the heat exchange area when the flue gas is cooled, and the cooling water flows in the hollow pipe cavity between the wave-shaped heat guide pipe and the wave-shaped smoke guide pipe, which can fully absorb the heat in the flue gas, improve the cooling efficiency of the flue gas, realize efficient heat recovery, and the secondary water passing structure at the middle link pipe where the hollow pipe is located can perform secondary water passing heat exchange on the heat at the hollow pipe, assist the efficient cooling of the flue gas after the heat exchange and cooling of the hollow pipe, and ensure the efficient cooling of the flue gas before it is discharged from the smelting furnace to the subsequent flue gas processing equipment, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the utility model takes the technical scheme that:

[0006] The application discloses a smelting furnace cooling flue, which comprises a smoke inlet hood and a flue pipe, the flue pipe is interconnected and welded above the hood opening of the smoke inlet hood, and the cooling mechanism comprises a middle connecting pipe, a pair of sealing discs, a wave-shaped heat conducting pipe, a pair of connecting rings, a wave-shaped smoke guide pipe, a pair of connecting pipes, a long connecting pipe, a drainage ring box and a water inlet ring box, the flue pipe is flange-connected with the middle connecting pipe at the outer end pipe opening, and the two end pipe openings of the middle connecting pipe are symmetrically welded with the pair of sealing discs, the wave-shaped heat conducting pipe is welded between the disc holes of the pair of sealing discs, the wave-shaped smoke guide pipe is arranged in the pipe body of the wave-shaped heat conducting pipe, the two end pipe bodies of the wave-shaped smoke guide pipe and the wave-shaped heat conducting pipe are welded with the pair of connecting rings to form a hollow pipe, the pipe body of the wave-shaped smoke guide pipe is symmetrically welded with the pair of connecting pipes which are interconnected with the pipe cavity of the wave-shaped smoke guide pipe, the two groups of pipe bodies of the pair of connecting pipes are respectively welded with the drainage ring box and the water inlet ring box through the long connecting pipe, and the box bodies of the drainage ring box and the water inlet ring box are respectively welded with the drainage pipe and the water inlet pipe which are interconnected with the box cavities of the drainage ring box and the water inlet ring box, and the outer side of the middle connecting pipe between the pair of sealing discs is symmetrically welded with the pair of connecting pipes which are interconnected with the pipe cavities of the pair of connecting pipes.

[0007] Further, the pair of connecting pipes are welded with flange plates at the outer pipe openings away from the middle connecting pipe.

[0008] By adopting the above technical scheme, the outer pipe openings of the pair of connecting pipes are welded with flange plates, the pair of connecting pipes can be connected with external water supply pipes and water demand pipes through the flange plates, cooling water can be sent into the hollow pipe cavity between the pair of sealing discs and the middle connecting pipe from one group of pipe bodies of the pair of connecting pipes, then the heat emitted from the wave-shaped smoke guide pipe and the wave-shaped heat conducting pipe can heat the water cooling water in the middle connecting pipe, and then the other group of pipe bodies of the pair of connecting pipes can send the hot water into the water demand pipes of the heat-using equipment for water supply.

[0009] Further, the two end pipe bodies of the middle connecting pipe are symmetrically welded with flange rings, and one side flange ring of the middle connecting pipe is connected with the flange plate of the flue pipe through bolts and nuts.

[0010] By adopting the above technical scheme, the middle connecting pipe can be flange-connected with the flange plate of the flue pipe through the flange rings, and then the other group of flange rings of the middle connecting pipe can be flange-connected with the pipes of subsequent flue gas treatment equipment for flue gas supply.

[0011] Further, the disc hole is arranged on the surface of the disc body in a ring shape, and the wave-shaped heat conducting pipe is welded between the disc holes on the surfaces of the two groups of disc bodies.

[0012] By adopting the above technical scheme, the surfaces of the pair of sealing discs are provided with a plurality of disc holes, and a plurality of wave-shaped heat conducting pipes can be arranged, so that the wave-shaped smoke guide pipes can be used to divide and send the flue gas at the flue pipe, and the heat in the flue gas can be better transmitted to the cooling water between the wave-shaped heat conducting pipes and the wave-shaped smoke guide pipes for heat exchange.

[0013] Further, the pipe body surface of the middle connecting pipe is provided with a surface hole for passing through the long connecting pipe, and the surface hole cavity opening of the middle connecting pipe is welded with the pipe body of the long connecting pipe;

[0014] By adopting the above technical scheme, after the surface hole of the middle connecting pipe passes through the long connecting pipe, the long connecting pipe can be welded at the middle connecting pipe for sealing.

[0015] Further, the box ring inner diameter size of the water inlet ring box and the water outlet ring box is greater than the pipe body diameter of the middle connecting pipe, and the water inlet ring box and the water outlet ring box are sleeved outside the middle connecting pipe.

[0016] By adopting the above technical scheme, the water inlet ring box and the water outlet ring box can be sleeved at the middle connecting pipe and welded with the long connecting pipe, so that the water at the water inlet ring box can enter between the wave-shaped heat guide pipe and the wave-shaped smoke guide pipe, and the hot water between the wave-shaped heat guide pipe and the wave-shaped smoke guide pipe can be discharged from the long connecting pipe to the water outlet ring box for external discharge.

[0017] Compared with the prior art, the utility model has the advantages of:

[0018] The utility model discloses a cooling mechanism is set up at the flue pipe of the existing smelting furnace, the hollow pipe is combined by wave-shaped heat guide pipe, wave-shaped smoke guide pipe and pair of connecting rings for passing through smoke and once passing through water, effectively increases the heat exchange area when the flue gas cooling, and the cooling water flows in the hollow pipe cavity between the wave-shaped heat guide pipe and the wave-shaped smoke guide pipe, can fully absorb the heat in the flue gas, improves the cooling efficiency of the flue gas, realizes the efficient recovery of heat.

[0019] And the middle connecting pipe where the hollow pipe is also exists secondary water structure, can carry out secondary water heat exchange to the heat of the hollow pipe, assists the efficient cooling of the flue gas after the hollow pipe heat exchange and cooling, guarantees the efficient cooling of the flue gas from the smelting furnace to the subsequent flue gas treatment equipment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is the overall structure schematic diagram of the utility model kind of smelting furnace cooling flue.

[0021] Fig. 2 It is the middle connecting pipe and flue pipe split schematic drawing of the utility model kind of smelting furnace cooling flue.

[0022] Fig. 3 It is the cooling mechanism explosion drawing of the utility model kind of smelting furnace cooling flue.

[0023] In the drawing: 1, the smoke cover is entered;2, the flue pipe is;3, the cooling mechanism is;4, the middle connecting pipe is;5, the pair of sealing disc is;6, the wave-shaped heat guide pipe is;7, the pair of connecting ring is;8, the wave-shaped smoke guide pipe is;9, the pair of connecting pipe is;10, the long connecting pipe is;11, the water outlet ring box is;12, the water inlet ring box is;13, the drain pipe is;14, the water inlet pipe is;15, the flange ring is;16, the pair of pipe is installed. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figs. 1-3 As shown, a cooling flue for a smelting furnace includes a flue hood 1 and a flue pipe 2. The flue pipe 2 is welded to the upper part of the hood opening of the flue hood 1. The furnace also includes a cooling mechanism 3, which includes a central connecting pipe 4, sealing plates 5, corrugated heat-conducting pipes 6, connecting rings 7, corrugated flue pipes 8, connecting pipes 9, a long connecting pipe 10, a drain ring box 11, and a water inlet ring box 12. The central connecting pipe 4 is flanged at the outer end of the flue pipe 2, and sealing plates 5 are symmetrically welded inside the two ends of the central connecting pipe 4. Corrugated heat-conducting pipes 6 are welded between the holes of the sealing plates 5. The tube body is provided with a corrugated smoke guide pipe 8. The two ends of the corrugated smoke guide pipe 8 and the corrugated heat conduction pipe 6 are welded together by a connecting ring 7 to form a hollow tube. The corrugated smoke guide pipe 8 is symmetrically welded with connecting pipes 9 that communicate with its own cavity. The two sets of tubes of the connecting pipes 9 are respectively welded with a drain ring box 11 and a water inlet ring box 12 through a long connecting pipe 10. The drain ring box 11 and the water inlet ring box 12 are respectively welded with a drain pipe 13 and a water inlet pipe 14 that communicate with their own cavity. The connecting pipe 4 between the sealing plates 5 is symmetrically welded with a connecting pipe 16 that communicates with its own cavity.

[0026] A flange is welded to the outer pipe opening of the mounting pipe 16 away from the central connecting pipe 4;

[0027] By adopting the above technical solution, after welding the flange to the outer pipe opening of the mounting pipe 16, the mounting pipe 16 can be connected to the external water supply and demand pipes with the help of the flange and bolts and nuts. This facilitates the external water source to send cooling water from one set of pipes of the mounting pipe 16 into the hollow pipe cavity between the sealing plate 5 and the central connecting pipe 4. Then, the heat transmitted from the corrugated smoke guide pipe 8 and the corrugated heat guide pipe 6 can heat the water cooling water in the central connecting pipe 4. Then, the other set of pipes of the mounting pipe 16 can send hot water to the water demand pipe of the heat-using equipment for water supply.

[0028] Among them, flange rings 15 are symmetrically welded to the outer ends of the pipes of the middle connecting pipe 4, and the flange ring 15 on one side of the middle connecting pipe 4 is connected to the flange of the flue pipe 2 by bolts and nuts.

[0029] By adopting the above technical solution, the connecting pipe 4 can be flanged at the flange of the flue pipe 2 using the flange ring 15, and then the other set of flange rings of the connecting pipe 4 can be flanged to the pipeline of the subsequent flue gas treatment equipment for flue gas supply.

[0030] The disc body surface of the sealing disc 5 is annularly provided with disc holes, and the two groups of disc holes of the sealing disc 5 are welded with the zigzag heat conducting pipes 6;

[0031] By adopting the above technical scheme, the sealing disc 5 is provided with more disc holes, and more zigzag heat conducting pipes 6 can be installed, so that the more zigzag heat conducting pipes 6 can be used to divide and send the flue gas at the flue pipe 2 through the zigzag smoke guide pipe 8, and the heat in the flue gas can be better transferred to the cooling water between the zigzag heat conducting pipes 6 and the zigzag smoke guide pipe 8 for heat exchange.

[0032] The pipe body surface of the middle connecting pipe 4 is provided with a surface hole for penetrating the long connecting pipe 10, and the surface hole cavity of the middle connecting pipe 4 is welded with the pipe body of the long connecting pipe 10;

[0033] By adopting the above technical scheme, the long connecting pipe 10 can be welded at the middle connecting pipe 4 for sealing after the surface hole of the middle connecting pipe 4 penetrates the long connecting pipe 10.

[0034] The inner diameter of the box ring of the water inlet ring box 12 and the water outlet ring box 11 is greater than the pipe body diameter of the middle connecting pipe 4, and the water inlet ring box 12 and the water outlet ring box 11 are sleeved outside the middle connecting pipe 4;

[0035] By adopting the above technical scheme, the water inlet ring box 12 and the water outlet ring box 11 can be sleeved at the middle connecting pipe 4 and welded with the long connecting pipe 10, so that the water at the water inlet ring box 12 can enter between the zigzag heat conducting pipes 6 and the zigzag smoke guide pipe 8, and the hot water between the zigzag heat conducting pipes 6 and the zigzag smoke guide pipe 8 can be discharged from the long connecting pipe 10 to the water outlet ring box 11 for external discharge.

[0036] It needs to be explained that the utility model discloses a smelting furnace cooling flue, and the cooling mechanism 3 is arranged at the flue pipe 2 of the existing smelting furnace, the middle connecting pipe 4 of the cooling mechanism 3 can be connected in communication at the flange plate of the flue pipe 2 by means of the flange ring 15, then the other end flange ring 15 of the middle connecting pipe 4 can be flange connected with the flue gas subsequent treatment equipment pipeline, then the water supply and water demand pipeline are connected with the external water supply and water demand pipeline by means of the flange plate and bolt and nut, the external water source can send the cooling water into the hollow pipe cavity between the sealing disc 5 and the middle connecting pipe 4 from the group of pipe bodies of the pipe 16, then the heat emitted at the wave-shaped smoke guide pipe 8 and the wave-shaped heat guide pipe 6 can heat the water cooling water in the middle connecting pipe 4, then the other group of pipe bodies of the pipe 16 can send the hot water into the water demand pipeline of the heat equipment for water supply, and the water inlet ring box 12 and the water outlet ring box 11 can be communicated with the external water supply pipeline and the heat water demand pipeline through the water inlet pipe 14 and the water outlet pipe 13 respectively, the cooling water can enter the hollow pipe formed by the wave-shaped heat guide pipe 6, the wave-shaped smoke guide pipe 8 and the connecting ring 7 along the long connecting pipe 10 and the connecting pipe 9 from the water inlet ring box 12, when the smoke inlet cover 1 is installed above the smelting furnace to obtain the flue gas, the high-temperature flue gas enters the wave-shaped pipe body of the wave-shaped smoke guide pipe 8 from the flue pipe 2 and is transported to the subsequent flue gas treatment equipment, and the high-temperature flue gas can heat the water for the first time in the hollow pipe formed by the wave-shaped heat guide pipe 6, the wave-shaped smoke guide pipe 8 and the connecting ring 7 to cool, then a large amount of water in the middle connecting pipe 4 can cool and exchange heat with the wave-shaped heat guide pipe 6 for the second time, and assist the flue gas in the wave-shaped smoke guide pipe 8 to be cooled efficiently, so that the heat carried by the flue gas when being discharged is greatly reduced, and the different heat water at the hollow pipe and the middle connecting pipe 4 can be discharged respectively and used in different places.

[0037] It needs to be explained that the utility model discloses a smelting furnace cooling flue, and the components in the utility model are components known by the person skilled in the art, and the structure and principle thereof can be known by the person skilled in the art through a technical manual or through a conventional experimental method.

[0038] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by the person skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification only illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A smelting furnace cooling flue, comprising an inlet hood (1) and a flue pipe (2), the flue pipe (2) is interconnected and welded above the hood opening of the inlet hood (1), characterized in that: The cooling mechanism (3) comprises a middle connecting pipe (4), a pair of sealing discs (5), a wave-shaped heat conducting pipe (6), a pair of connecting rings (7), a wave-shaped smoke conducting pipe (8), a pair of connecting pipes (9), a long connecting pipe (10), a drainage ring box (11) and a water inlet ring box (12).

2. A smelting furnace cooling flue according to claim 1, characterised in that: The outer end of the flue pipe (2) is connected with the middle connecting pipe (4), and the two ends of the middle connecting pipe (4) are symmetrically welded with the pair of sealing discs (5).

3. A smelting furnace cooling flue according to claim 1, characterised in that: The wave-shaped heat conducting pipe (6) is welded between the disc holes of the pair of sealing discs (5).

4. A smelter cooling flue as claimed in claim 1, characterised in that: The wave-shaped smoke conducting pipe (8) is arranged in the pipe body of the wave-shaped heat conducting pipe (6).

5. A smelting furnace cooling flue according to claim 1, characterised in that: The two ends of the wave-shaped smoke conducting pipe (8) and the wave-shaped heat conducting pipe (6) are welded with the pair of connecting rings (7) to form a hollow pipe.

6. A smelting furnace cooling flue according to claim 1, characterised in that: The outer side of the middle connecting pipe (4) between the pair of sealing discs (5) is symmetrically welded with the pair of connecting pipes (16) which communicate with the pipe cavity. The outer end of the flue pipe (2) is connected with the middle connecting pipe (4), and the two ends of the middle connecting pipe (4) are symmetrically welded with the pair of sealing discs (5). The wave-shaped heat conducting pipe (6) is welded between the disc holes of the pair of sealing discs (5). The wave-shaped smoke conducting pipe (8) is arranged in the pipe body of the wave-shaped heat conducting pipe (6). The two ends of the wave-shaped smoke conducting pipe (8) and the wave-shaped heat conducting pipe (6) are welded with the pair of connecting rings (7) to form a hollow pipe. The outer side of the middle connecting pipe (4) between the pair of sealing discs (5) is symmetrically welded with the pair of connecting pipes (16) which communicate with the pipe cavity. The outer end of the flue pipe (2) is connected with the middle connecting pipe (4), and the two ends of the middle connecting pipe (4) are symmetrically welded with the pair of sealing discs (5). The wave-shaped heat conducting pipe (6) is welded between the disc holes of the pair of sealing discs (5). The wave-shaped smoke conducting pipe (8) is arranged in the pipe body of the wave-shaped heat conducting pipe (6). The two ends of the wave-shaped smoke conducting pipe (8) and the wave-shaped heat conducting pipe (6) are welded with the pair of connecting rings (7) to form a hollow pipe. The outer side of the middle connecting pipe (4) between the pair of sealing discs (5) is symmetrically welded with the pair of connecting pipes (16) which communicate with the pipe cavity. The outer end of the flue pipe (2) is connected with the middle connecting pipe (4), and the two ends of the middle connecting pipe (4) are symmetrically welded with the pair of sealing discs (5). The wave-shaped heat conducting pipe (6) is welded between the disc holes of the pair of sealing discs (5). The wave-shaped smoke conducting pipe (8) is arranged in the pipe body of the wave-shaped heat conducting pipe (6). The two ends of the wave-shaped smoke conducting pipe (8) and the wave-shaped heat conducting pipe (6) are welded with the pair of connecting rings (7) to form a hollow pipe. The outer side of the middle connecting pipe (4) between the pair of sealing discs (5) is symmetrically welded with the pair of connecting pipes (16) which communicate with the pipe cavity.

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