Novel mounting structure of high-temperature heat exchanger

Abstract

The utility model relates to the technical field of high-temperature heat exchanger installation, in particular to a novel installation structure of a high-temperature heat exchanger, which comprises an outside-furnace flue arranged above a heating furnace and used for accommodating the high-temperature heat exchanger, and a furnace top girder arranged between the heating furnace and the outside-furnace flue and used for vertically supporting the outside-furnace flue, one end of the outside-furnace flue is connected with a heating furnace flue gas upper exhaust port, the outside-furnace flue comprises a box-type shell, a heat exchanger supporting beam used for vertically supporting the high-temperature heat exchanger is installed at the bottom of the box-type shell, and a heat preservation and insulation layer is installed in the box-type shell. The high-temperature heat exchanger and the outside-furnace flue are installed at the top of the heating furnace, on one hand, the problem that part of manufacturers have no proper position to arrange the outside-furnace flue when building the heating furnace is solved, on the other hand, the problem that the smoke temperature is reduced due to arrangement of a long-distance flue is solved, the air temperature after heat exchange is effectively increased, and gas energy consumption is reduced; and the problem of smoke bias during single-side smoke exhaust in the furnace is also solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of high temperature heat exchanger installation technology, especially to a novel installation structure of high temperature heat exchanger. BACKGROUND

[0002] At present, most of the high temperature heat exchangers used on the heating furnace for rolling steel are installed in the single side or double side furnace flue outside the furnace tail, the furnace flue outside is divided into full underground flue and half underground flue, using the above flue arrangement mode, installing the high temperature heat exchanger not only occupies large area, but also affects the traffic on the ground, the single side flue arrangement form also exists the phenomenon of flue gas deflection, causing the problem of uneven preheating temperature of high temperature flue gas to billets in the preheating section.

[0003] Part of the steel enterprises has limited heating furnace area position, and there is no suitable position to arrange the furnace flue outside the furnace tail, so the flue can only be arranged far away from the heating furnace, and the high temperature flue gas is introduced through the long flue, causing the temperature of the high temperature flue gas to decrease before entering the high temperature heat exchanger, resulting in the decrease of the temperature of the hot air after heat exchange. INVENTION CONTENTS

[0004] In order to solve the problems existing in the prior art, the utility model provides a novel installation structure of high temperature heat exchanger.

[0005] The utility model provides a novel installation structure of high temperature heat exchanger adopts the following technical scheme:

[0006] A novel installation structure of high temperature heat exchanger, including the furnace flue outside the furnace for containing high temperature heat exchanger arranged above the heating furnace and the furnace top beam for vertically supporting the furnace flue outside the furnace arranged between the heating furnace and the furnace flue outside the furnace, one end of the furnace flue outside the furnace is connected with the flue gas upper discharge port of the heating furnace, the furnace flue outside the furnace includes the box type shell, the heat exchanger support beam for vertically supporting the high temperature heat exchanger is installed at the bottom of the box type shell, and the heat preservation and insulation layer is installed in the box type shell.

[0007] Through the above technical scheme, the high temperature heat exchanger and the furnace flue outside the furnace are installed on the top of the heating furnace, on the one hand, the problem that part of manufacturers have no suitable position to arrange the furnace flue outside the furnace when building the heating furnace is solved, on the other hand, the problem that the long distance flue leads to the decrease of flue gas temperature is solved, the air temperature after heat exchange is effectively improved, the gas energy consumption is reduced, and the problem of flue gas deflection of single side flue in the furnace is solved.

[0008] Optionally, the high temperature heat exchanger is in a horizontal installation state.

[0009] Through the above technical scheme, compared with the vertical installation mode, the problem that the truss car cannot pass through can be effectively avoided.

[0010] Optionally, the heat insulation layer at the bottom of the off-furnace flue comprises, from outside to inside, a fiber blanket, clay bricks, light-weight insulation bricks and castable material, and the heat insulation layer at the top and side of the off-furnace flue comprises, from outside to inside, a fiber blanket and a fiber module.

[0011] By adopting the above technical scheme, the main body of the heat insulation layer is laid with fiber products, which has the effects of reducing the weight of the off-furnace flue and increasing the heat insulation performance.

[0012] Optionally, the furnace top girder is welded by H-shaped steel, I-shaped steel and angle steel.

[0013] By adopting the above technical scheme, a composite support system is formed, which effectively improves the overall load-bearing performance.

[0014] In summary, the utility model has at least one of the following beneficial technical effects:

[0015] 1. The problem of no suitable position for arranging the off-furnace flue when building the heating furnace by some manufacturers is solved;

[0016] 2. The problem of reduced flue gas temperature caused by the long-distance flue is solved, the air temperature after heat exchange is effectively improved, and the fuel gas energy consumption is reduced;

[0017] 3. The problem of one-sided smoke flue gas deflection in the furnace is solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the novel installation structure of the high-temperature heat exchanger of the utility model embodiment.

[0019] Figure 2 is a top view of the off-furnace flue of the utility model embodiment.

[0020] Figure 3 is Figure 2 the sectional view in the direction of A-A.

[0021] Figure 4 is Figure 2 the sectional view in the direction of B-B.

[0022] MARKED: 1, heating furnace; 2, high-temperature heat exchanger; 3, off-furnace flue; 30, box-shaped shell; 31, heat exchanger support beam; 32, heat insulation layer; 320, fiber blanket; 321, clay brick; 322, light-weight insulation brick; 323, castable material; 324, fiber module; 4, furnace top girder. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying Figure 1 -attached Figure 4 The utility model will be further described in detail.

[0024] The utility model discloses a novel installation structure of high temperature heat exchanger. Refer to Figure 1 , the top of heating furnace 1 is provided with high temperature heat exchanger 2, and the novel installation structure of high temperature heat exchanger includes the flue 3 for accommodating high temperature heat exchanger 2 and the furnace top girder 4 for vertically supporting the flue 3 of being set at the top of heating furnace 1.

[0025] Refer to Figure 2 And Figure 3 , the flue 3 of the flue 3 is connected with the flue 3 of heating furnace 1, and high temperature heat exchanger 2 is installed in the flue 3 in horizontal state. Refer to Figure 3 And Figure 4 , the flue 3 includes box type shell 30, heat exchanger support beam 31 and heat preservation insulation layer 32. Box type shell 30 is welded by 5mm thick steel plate and 10# channel steel, heat exchanger support beam 31 is parallelly provided with two and is located between high temperature heat exchanger 2 and the bottom plate of box type shell 30, and heat exchanger support beam 31 adopts I-beam.

[0026] Refer to Figure 3 And Figure 4 , heat preservation insulation layer 32 is set inside box type shell 30, wherein the heat preservation insulation layer 32 located at the bottom of flue 3 includes 100mm thick fiber blanket 320, 68mm thick clay brick 321, 68mm thick light weight insulation brick 322 and 14mm thick castable 323 from outside to inside, and has good durability; the heat preservation insulation layer 32 located at the top and side of flue 3 includes 50mm thick fiber blanket 320 and 250mm thick fiber module 324 from outside to inside.

[0027] Refer to Figure 1 And Figure 3 , the furnace top girder 4 is parallelly provided with multiple and is located between the top of heating furnace 1 and the bottom of flue 3, and the furnace top girder 4 is welded by H-shaped steel, I-beam and angle steel, forms a composite support system, to improve the overall load bearing performance.

[0028] The implementation principle of the novel installation structure of high temperature heat exchanger of the utility model embodiment is that high temperature flue gas enters flue 3 upwards from heating furnace 1 and exchanges heat with high temperature heat exchanger 2, cold air enters high temperature heat exchanger 2 from the low temperature side of flue gas, hot air after heat exchange is led out from the high temperature side of flue gas, and flue gas after heat exchange is led to chimney by induced draft fan. The main body of heat preservation insulation layer 32 adopts fiber products to lay, has the effect of reducing the weight of flue 3 and increasing the heat preservation performance.

[0029] The high-temperature heat exchanger 2 and the off-furnace flue 3 are installed on the top of the heating furnace 1, which solves the problem of no suitable position for arranging the off-furnace flue 3 in the construction of the heating furnace 1 by some manufacturers, and solves the problem of the decrease of the flue gas temperature caused by the long distance flue, effectively improves the air temperature after heat exchange, reduces the energy consumption of the gas, and also solves the problem of the partial flow of the flue gas in the single-side flue gas exhaust in the furnace. The high-temperature heat exchanger 2 adopts a horizontal installation mode, which can effectively avoid the problem that the truss vehicle cannot pass compared with the vertical installation mode.

[0030] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A new installation structure of a high-temperature heat exchanger, characterized by: The utility model relates to a high-temperature heat exchanger supporting structure of a heating furnace, which comprises a furnace outer flue (3) arranged above a heating furnace (1) for accommodating the high-temperature heat exchanger (2) and a furnace top beam (4) arranged between the heating furnace (1) and the furnace outer flue (3) for vertically supporting the furnace outer flue (3), one end of the furnace outer flue (3) is connected with a flue gas upper discharge port of the heating furnace (1), the furnace outer flue (3) comprises a box-shaped shell (30), the bottom of the box-shaped shell (30) is provided with a heat exchanger supporting beam (31) for vertically supporting the high-temperature heat exchanger (2), and a heat preservation and insulation layer (32) is arranged in the box-shaped shell (30).

2. The high-temperature heat exchanger novel installation structure according to claim 1, characterized by: The high-temperature heat exchanger (2) is horizontally arranged.

3. The high-temperature heat exchanger novel installation structure according to claim 1, characterized by: The heat preservation and insulation layer (32) at the bottom of the furnace outer flue (3) comprises, from outside to inside, a fiber blanket (320), clay bricks (321), light-weight insulation bricks (322) and castable (323), and the heat preservation and insulation layer (32) at the top and the side of the furnace outer flue (3) comprises, from outside to inside, a fiber blanket (320) and a fiber module (324).

4. The high temperature heat exchanger novel mounting structure according to claim 1, characterized in that: The furnace top beam (4) is welded by H-shaped steel, I-shaped steel and angle steel.

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