Blast furnace top cooling system

Abstract

The utility model discloses a blast furnace top cooling system which comprises a spraying mechanism and a cooling circulation mechanism, the spraying mechanism comprises an outer protection frame and a spraying pipe in the outer protection frame, the cooling circulation mechanism comprises a cooling liquid box and a cooling pipe set, the cooling pipe set is connected with the cooling liquid box through a pipeline, and a heat dissipation opening is formed in the top of the cooling liquid box. A water distribution pipe is arranged in the cooling liquid box and located below the corresponding heat dissipation opening, the water return pipe is communicated with the water distribution pipe, a plurality of water distribution heads are arranged at the bottom of the water distribution pipe, and a water collector is further arranged in the cooling liquid box and located below the corresponding water distribution pipe. According to the blast furnace cooling device, the spraying mechanism and the cooling circulation mechanism are arranged, the spraying mechanism is used for spraying cooling water into the blast furnace, cooling liquid in the cooling circulation mechanism can reduce heat radiated by the blast furnace through circulation, and therefore the temperature of a spraying pipe is reduced, the cooling effect of the blast furnace is guaranteed, consumption of spraying water is reduced, and the energy consumption of the blast furnace is reduced. And the cooling cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace cooling equipment, in particular to a blast furnace top cooling system. Background Art

[0002] A blast furnace is a smelting device. By putting ore and fuel (coke, coal, etc.) into the blast furnace together, the ore is reduced under high temperature conditions, and the available metallic iron is cracked out. Since the inside of the blast furnace is a high-temperature and high-pressure environment, if it remains at a high temperature for a long time, it may cause damage to parts such as the furnace wall and the furnace top and shorten the service life of the equipment. To ensure safety and production, the blast furnace must be cooled. At present, for cooling the blast furnace, a water outlet pipe is set at the furnace top, and nozzles are evenly distributed on the water outlet pipe, so as to spray misty small water droplets into the blast furnace, thereby reducing the temperature of the furnace top and the inside of the furnace to a safe range. Since the water outlet pipe is located near the blast furnace, the heat inside the blast furnace will radiate to the water outlet pipe, causing it to heat up. At this time, when the spray water for cooling enters the water outlet pipe, its temperature will also increase, thus reducing the cooling effect of the cooling water. More cooling water is required for the cooling work, increasing the water consumption and cost investment, which brings great inconvenience to blast furnace production. Content of the Utility Model

[0003] The purpose of the utility model is to avoid the deficiencies of the prior art and provide a blast furnace top cooling system, so as to effectively solve the deficiencies existing in the prior art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a blast furnace top cooling system, including a spraying mechanism and a cooling circulation mechanism;

[0005] The spraying mechanism includes an outer protection frame, a spraying pipe is arranged inside the outer protection frame, a plurality of water outlet pipes extending out of the outer protection frame are arranged on the spraying pipe, and a water inlet pipe is also arranged on the spraying pipe;

[0006] The cooling circulation mechanism includes a coolant tank and a cooling pipe group arranged inside the outer protection frame. A water supply pipe connected to the bottom of the coolant tank and a return pipe connected to the top of the coolant tank are arranged on the cooling pipe group. A heat dissipation port is arranged at the top of the coolant tank, a heat dissipation fan is arranged at the heat dissipation port, a water distribution pipe is arranged at a position corresponding to the lower part of the heat dissipation port inside the coolant tank, the return pipe is communicated with the water distribution pipe, a plurality of water distribution heads are arranged at the bottom of the water distribution pipe, and a water collector is also arranged at a position corresponding to the lower part of the water distribution pipe inside the coolant tank.

[0007] Further, the cooling pipe group includes water distribution joints located on two outer sides of the outer protection frame. A plurality of cooling pipes are evenly arranged circumferentially between the water distribution joints. The cooling pipes penetrate the outer protection frame transversely and are arranged around the spray pipe. The water supply pipe is connected to one side water distribution joint, and the water return pipe is connected to the other side water distribution joint.

[0008] Further, a plurality of heat exchange fins are evenly arranged along the outer wall of the part of the cooling pipe located inside the outer protection frame.

[0009] Further, a water outlet nozzle is arranged at one end of the water outlet pipe located outside the outer protection frame.

[0010] Further, the water collector includes a plurality of V-shaped plates arranged side by side. The edges of the V-shaped plates are connected in series by connecting rods, and the V-shaped plates are horizontally arranged in the coolant tank.

[0011] Further, a water pump is arranged at the bottom of the coolant tank, and the water pump is connected to the water supply pipe.

[0012] Further, flange plates are arranged at the connection ends of the water return pipe and the water distribution pipe, and the two flange plates are fixed by bolts.

[0013] Further, a water replenishing pipe is also arranged on the coolant tank.

[0014] The above technical solution of the present utility model has the following beneficial effects: By providing a spray mechanism and a cooling circulation mechanism, the spray mechanism is used to spray cooling water into the blast furnace, and the coolant in the cooling circulation mechanism can take away the heat radiated from the blast furnace through circulation, thereby reducing the temperature of the spray pipe itself. Furthermore, the cooling effect of the blast furnace is ensured, the consumption of spray water is reduced, and the cooling cost is lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic main cross-sectional structure view of an embodiment of the present utility model;

[0016] Figure 2 is a schematic side plan view at the water distribution joint of an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to more clearly understand the above objects, features and advantages of the present utility model, the present utility model will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0018] In the following description, many specific details are set forth in order to provide a thorough understanding of the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present utility model is not limited by the specific embodiments disclosed below.

[0019] As Figure 1-2 shown, a blast furnace top cooling system according to this embodiment includes a spraying mechanism and a cooling circulation mechanism;

[0020] The spraying mechanism includes an outer protective frame 1. A spraying pipe 2 is arranged inside the outer protective frame 1. A plurality of water outlet pipes 3 extending outward from the outer protective frame 1 are arranged on the spraying pipe 2. A water inlet pipe 4 is also arranged on the spraying pipe 2;

[0021] The cooling circulation mechanism includes a coolant tank 5 and a cooling pipe group arranged inside the outer protective frame 1. Coolant is added to the coolant tank 5. A water supply pipe 6 connected to the bottom of the coolant tank 5 and a water return pipe 7 connected to the top of the coolant tank 5 are arranged on the cooling pipe group. A heat dissipation port 8 is arranged at the top of the coolant tank 5. A heat dissipation fan 9 is arranged at the heat dissipation port 8. A water distribution pipe 10 is arranged at a position in the coolant tank 5 corresponding to the lower part of the heat dissipation port 8. The water return pipe 7 is communicated with the water distribution pipe 10. A plurality of water distribution heads 11 are arranged at the bottom of the water distribution pipe 10. A water collector is also arranged at a position in the coolant tank 5 corresponding to the lower part of the water distribution pipe 10.

[0022] The cooling pipe group includes water distribution joints 12 located on two outer sides of the outer protective frame 1. A plurality of cooling pipes 13 are evenly arranged circumferentially between the water distribution joints 12. The cooling pipes 13 penetrate the outer protective frame 1 transversely and the cooling pipes 13 are arranged around the spraying pipe 2. The water supply pipe 6 is connected to one side of the water distribution joint 12, and the water return pipe 7 is connected to the other side of the water distribution joint 12.

[0023] A plurality of heat exchange fins 14 are evenly arranged on the outer wall of the part of the cooling pipe 13 located inside the outer protective frame 1. The heat exchange fins 14 can improve the heat exchange efficiency of the cooling pipe 13, thereby quickly taking away the heat inside the outer protective frame 1.

[0024] One end of the water outlet pipe 3 located outside the outer protective frame 1 is provided with a water outlet nozzle 15, and the water outlet nozzle 15 sprays cooling water into the blast furnace.

[0025] The water collector includes a plurality of V-shaped plates 16 arranged side by side. The edges of each V-shaped plate 16 are connected in series by a connecting rod 17. The V-shaped plates 16 are horizontally arranged in the coolant tank 5. After the V-shaped plates 16 are assembled together, the formed water collector is horizontally arranged in the coolant tank 5, that is, the protruding ends of the V-shaped plates 16 are horizontally arranged. In this way, the water flow left by the water supply pipe 10 will fall onto each V-shaped plate 16 and then drip along the surface of the V-shaped plate 16. In this way, the heat dissipation effect of the coolant can be improved.

[0026] A water pump 18 is provided at the bottom of the coolant tank 5, and the water pump 18 is connected to the water supply pipe 6.

[0027] Flange plates 19 are provided at the connection ends of the return water pipe 7 and the water distribution pipe 10, and the two flange plates 19 are fixed by bolts.

[0028] A make-up water pipe 20 is also provided on the coolant tank 5.

[0029] The working principle of the present utility model is as follows: Connect a water source through the water inlet pipe 4 and pump the cooling water into the interior of the spray pipe 2. Subsequently, the cooling water is sprayed out along the top of the blast furnace via the water outlet nozzles 15, thereby achieving the effect of cooling the temperature of the blast furnace. The heat radiated from the blast furnace will cause the temperature of the outer protective frame 1 and the spray pipe 2 inside it to rise. At this time, control the water pump 18 to start, and it transports the coolant in the coolant tank 5 to the water distribution joint 12 on one side via the water supply pipe 6. Subsequently, the coolant circulates inside the outer protective frame 1 through the diversion of the cooling pipe 13, thereby taking away the temperature inside the outer protective frame 1 and reducing the temperature of the spray pipe 2. After the coolant in the cooling pipe 13 is heated through heat exchange, it converges again via the water distribution joint 12 on the other side, and finally returns to the make-up water pipe 10 at the top inside the coolant tank 5 via the return water pipe 7. The returned coolant flows down from the water distribution head 11 on the make-up water pipe 10, and the falling coolant drops onto the water collector and slides off, so that the loss of temperature in the returned coolant can be accelerated. At the same time, the heat dissipation fan 9 also draws the air inside the coolant tank 5 outwards, so that the heat is discharged along the heat dissipation port 8 at the top of the coolant tank 5, and the cooled coolant drips onto the bottom of the coolant tank 5 along the water collector and repeats the cooling operation, realizing the recycling of the coolant, and the coolant can be supplemented into the coolant tank 5 through the make-up water pipe 20.

[0030] The embodiments of the present utility model are given for the purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. A blast furnace top cooling system, characterized in that: It includes a spraying mechanism and a cooling circulation mechanism; The spraying mechanism includes an outer protective frame, a spraying pipe is arranged inside the outer protective frame, a plurality of water outlet pipes extending out of the outer protective frame are arranged on the spraying pipe, and a water inlet pipe is also arranged on the spraying pipe; The cooling circulation mechanism includes a coolant tank and a cooling pipe group arranged inside the outer protective frame. A water supply pipe connected to the bottom of the coolant tank and a water return pipe connected to the top of the coolant tank are arranged on the cooling pipe group. A heat dissipation port is arranged at the top of the coolant tank, a heat dissipation fan is arranged at the heat dissipation port, a water distribution pipe is arranged at a position corresponding to the lower part of the heat dissipation port inside the coolant tank, the water return pipe is communicated with the water distribution pipe, a plurality of water distribution heads are arranged at the bottom of the water distribution pipe, and a water collector is also arranged at a position corresponding to the lower part of the water distribution pipe inside the coolant tank.

2. The blast furnace top cooling system according to claim 1, characterized in that: The cooling pipe group includes water distribution joints located on two outer sides of the outer protective frame. A plurality of cooling pipes are evenly arranged circumferentially between the water distribution joints. The cooling pipes penetrate through the outer protective frame transversely and the cooling pipes are arranged around the spraying pipe. The water supply pipe is connected to one side water distribution joint, and the water return pipe is connected to the other side water distribution joint.

3. The top cooling system of a blast furnace according to claim 2, characterized in that: A plurality of heat exchange fins are evenly arranged on the outer wall of the part of the cooling pipe located inside the outer protective frame.

4. The top cooling system of a blast furnace according to claim 1, characterized in that: A water outlet nozzle is arranged at one end of the water outlet pipe located outside the outer protective frame.

5. A blast furnace top cooling system according to claim 1, characterized in that: The water collector includes a plurality of V-shaped plates arranged side by side. The edges of each V-shaped plate are connected in series by connecting rods, and the V-shaped plates are horizontally arranged inside the coolant tank.

6. The top cooling system of a blast furnace according to claim 1, characterized in that: A water pump is arranged at the bottom of the coolant tank, and the water pump is connected to the water supply pipe.

7. A blast furnace top cooling system according to claim 1, characterized in that: Flange plates are arranged at the connection ends of the water return pipe and the water distribution pipe, and the two flange plates are fixed by bolts.

8. The top-cooling system of a blast furnace according to claim 1, wherein: A water replenishing pipe is also arranged on the coolant tank.

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