Waste heat recovery device for circulating cooling water of blast furnace

Abstract

The utility model relates to the technical field of blast furnace circulating cooling water, and discloses a waste heat recovery device for blast furnace circulating cooling water, which comprises a main body. Water enters the main body through the water inlet pipe, when the water level reaches a water level monitoring position, water injection is stopped, and high-temperature cooling water in the blast furnace enters the first cooling water pipe through the cooling water inlet, enters the connecting pipe through the first cooling water pipe, enters the second cooling water pipe through the first cooling water pipe and is discharged from the cooling water outlet. Water in the water tank in the main body cools high-temperature cooling water in the pipeline and absorbs the temperature of the high-temperature cooling water, a user observes the water level of the water tank in the main body through the water level observation layer, and water is injected into the water tank through the water inlet pipe when the water level is low. And then the stirring rod stirs the water in the water tank to ensure that the water in the water tank quickly conducts heat on the blast furnace cooling water, and a user can conveniently use hot water.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace circulating cooling water, in particular to a waste heat recovery device for blast furnace circulating cooling water. Background Art

[0002] A blast furnace is constructed with a steel shell lined with refractory bricks. From top to bottom, the blast furnace consists of five sections: the throat, the shaft, the waist, the bosh, and the hearth. Due to its excellent technical and economic performance, simple process, high production volume, high labor efficiency, and low energy consumption, blast furnace ironmaking accounts for the vast majority of global iron production.

[0003] A search revealed a utility model patent with the publication number CN 217737957 U, which proposes a waste heat recovery device for copper rod cooling water. This device aims to address the technical issue of underutilization of waste heat from cooling water during copper rod production, as currently used. The device comprises a water storage tank and a heat exchanger mounted on top of the water storage tank. The heat exchanger is divided into a left heat exchange zone and a right heat exchange zone by a first vertical partition, the left and right heat exchange zones connected via a first opening at the bottom of the first vertical partition. Each heat exchange zone is provided with a heat exchange tube extending vertically along a spiral path, the lower portions of the two heat exchange tubes being connected by a horizontal tube. The upper portions of the heat exchange tubes extend through the side walls of the heat exchanger. The heat exchanger is provided with a water inlet port and an inlet valve. The heat exchanger is connected to the water storage tank via a drain pipe and an outlet valve, and the water storage tank has a water outlet port. This utility model fully utilizes waste heat from cooling water during copper rod production.

[0004] When the existing waste heat recovery device of blast furnace circulating cooling water is in use, heat is conducted to the blast furnace cooling water through water. When the water near the blast furnace cooling water is at a high temperature, the heat conduction effect is poor. Utility Model Content

[0005] The purpose of the utility model is to provide a waste heat recovery device for blast furnace circulating cooling water, which solves the problem proposed in the background technology that when heat is conducted to blast furnace cooling water by water, the heat conduction effect is poor when the water next to the blast furnace cooling water is high temperature.

[0006] An embodiment of the present application provides a waste heat recovery device for blast furnace circulating cooling water, including a main body, a water inlet pipe fixedly connected to the internal left end of the main body, a controller fixedly connected to the surface side of the main body, a cooling water inlet fixedly connected to the internal upper end of the main body, a water level observation layer provided at the internal right end of the main body, a drain pipe fixedly connected to the internal right end of the main body, a stirring assembly provided at the internal lower end of the main body, a water level monitor fixedly connected to the interior of the main body, and a temperature monitor fixedly connected to the interior of the main body.

[0007] By adopting the above technical solution, water is allowed to enter the main body through the water inlet pipe. When the water level reaches the water level monitoring position, water injection is stopped, and the high-temperature cooling water in the blast furnace enters the first cooling water pipe through the cooling water inlet. The high-temperature cooling water enters the connecting pipe and the second cooling water pipe through the first cooling water pipe and is discharged from the cooling water outlet. The water in the water tank inside the main body cools the high-temperature cooling water in the pipeline, and the water absorbs the temperature of the high-temperature cooling water. At the same time, the driving motor drives the transmission rod and the stirring rod to rotate, and the stirring rod drives the water inside the water tank to rotate, ensuring that the water inside the water tank is evenly heated and the high-temperature cooling water is quickly cooled. When the temperature monitoring shows that the water temperature is high, water is injected into the water tank inside the main body through the water inlet pipe. When the user needs to use hot water, the water in the water tank can be discharged and used through the drain pipe. The user observes the water level of the water tank inside the main body through the water level observation layer. When the water level is low, water is injected into the water tank through the water inlet pipe.

[0008] Optionally, the lower end of the surface of the cooling water inlet is fixedly connected to a first cooling water pipe, the right end of the surface side of the first cooling water pipe is fixedly connected to a connecting pipe, the right end of the surface side of the connecting pipe is fixedly connected to a second cooling water pipe, and the upper end of the surface of the second cooling water pipe is fixedly connected to a cooling water outlet.

[0009] By adopting the above technical solution, the blast furnace cooling water can be quickly heat-conducted.

[0010] Optionally, a fixed plate is fixedly connected to the surface of the stirring assembly, a motor is fixedly connected to the upper surface of the fixed plate, a transmission rod is fixedly connected to the upper surface of the motor, and a stirring rod is fixedly connected to the surface side of the transmission rod.

[0011] By adopting the above technical solution, the water inside the water tank is driven to rotate, thereby enhancing the uniformity of water heating.

[0012] Optionally, a valve is fixedly connected to the surface side of the drain pipe.

[0013] By adopting the above technical solution, the drainage pipe is sealed.

[0014] Optionally, a plurality of groups of supporting legs are fixedly connected to the lower end of the surface of the main body.

[0015] By adopting the above technical solutions, the overall support is guaranteed.

[0016] Optionally, there are multiple groups of stirring rods, and the multiple groups of stirring rods surround each other around the distribution center of the transmission rod.

[0017] By adopting the above technical solution, the water in the tank is driven to rotate, ensuring that the water dissipates heat evenly.

[0018] Optionally, a water tank is provided inside the main body.

[0019] By adopting the above technical solution, the high-temperature cooling water of the blast furnace is cooled.

[0020] Optionally, the first cooling water pipe, the first cooling water pipe, and the connecting pipe are all made of copper.

[0021] By adopting the above technical solution, the high-temperature cooling water of the blast furnace can be quickly heat-conducted.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] The technical solution of the present application is to allow water to enter the interior of the main body through the water inlet pipe. When the water level reaches the water level monitoring position, the water injection is stopped, and the high-temperature cooling water in the blast furnace enters the interior of the first cooling water pipe through the cooling water inlet. The high-temperature cooling water enters the connecting pipe and the second cooling water pipe through the first cooling water pipe and is discharged from the cooling water outlet. The water in the water tank inside the main body cools down the high-temperature cooling water in the pipeline, and the water absorbs the temperature of the high-temperature cooling water. At the same time, the driving motor drives the transmission rod and the stirring rod to rotate, and the stirring rod drives the water inside the water tank to rotate, so as to ensure that the water inside the water tank is evenly heated. , quickly cool down the high-temperature cooling water. When the temperature monitoring shows that the water temperature is high, water is added to the water tank inside the main body through the water inlet pipe. When the user needs to use hot water, the water in the water tank can be discharged through the drain pipe. The user observes the water level of the water tank inside the main body through the water level observation layer. When the water level is low, water is added to the water tank through the water inlet pipe. The structure is simple and easy to operate. The blast furnace cooling water is heat-conducted by water, and then the stirring rod stirs the water in the water tank to ensure that the water in the water tank quickly conducts heat to the blast furnace cooling water, making it convenient for users to use hot water. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of a waste heat recovery device for blast furnace circulating cooling water according to the present invention;

[0026] Figure 2 This is a schematic diagram of the overall side structure of a waste heat recovery device for circulating cooling water of a blast furnace according to the present invention;

[0027] Figure 3 This is a schematic diagram of the cooling water inlet structure of a waste heat recovery device for blast furnace circulating cooling water according to the utility model;

[0028] Figure 4 This is a schematic diagram of the stirring rod structure of a waste heat recovery device for blast furnace circulating cooling water in the utility model.

[0029] In the figure: 1. Main body; 2. Cooling water inlet; 201. First cooling water pipe; 202. Connecting pipe; 203. Second cooling water pipe; 204. Cooling water outlet; 3. Controller; 4. Water inlet pipe; 5. Water level observation layer; 6. Stirring assembly; 601. Fixed plate; 602. Motor; 603. Drive rod; 604. Stirring rod; 7. Drain pipe; 8. Water level monitoring; 9. Temperature monitoring. DETAILED DESCRIPTION

[0030] See also Figure 1-4 The utility model provides a technical solution: a waste heat recovery device for circulating cooling water of a blast furnace, comprising a main body 1, a water inlet pipe 4 fixedly connected to the left end of the interior of the main body 1, a controller 3 fixedly connected to the surface side of the main body 1, a cooling water inlet 2 fixedly connected to the upper end of the interior of the main body 1, a water level observation layer 5 provided at the right end of the interior of the main body 1, a drain pipe 7 fixedly connected to the right end of the interior of the main body 1, a stirring assembly 6 provided at the lower end of the interior of the main body 1, a water level monitoring system 8 fixedly connected to the interior of the main body 1, and a temperature monitoring system 9 fixedly connected to the interior of the main body 1.

[0031] In the above technical solution, water is introduced into the main body 1 through the water inlet pipe 4. When the water level reaches the water level monitoring position 8, the water injection is stopped, and the high-temperature cooling water in the blast furnace enters the first cooling water pipe 201 through the cooling water inlet 2. The high-temperature cooling water enters the connecting pipe 202 and the second cooling water pipe 203 through the first cooling water pipe 201 and is discharged from the cooling water outlet 204. The water in the water tank inside the main body 1 cools the high-temperature cooling water in the pipeline, and the water absorbs the temperature of the high-temperature cooling water. At the same time, the driving motor 602 drives The transmission rod 603 and the stirring rod 604 rotate, and the stirring rod 604 drives the water inside the water tank to rotate, ensuring that the water inside the water tank is evenly heated and quickly cooling the high-temperature cooling water. When the water temperature is high, the water tank inside the main body 1 is filled with water through the water inlet pipe 4. When the user needs to use hot water, the water inside the water tank can be discharged through the drain pipe 7. The user observes the water level of the water tank inside the main body 1 through the water level observation layer 5. When the water level is low, the water tank is filled with water through the water inlet pipe 4.

[0032] In the technical solution of the present utility model, Figure 1 and Figure 3 As shown, the lower end of the surface of the cooling water inlet 2 is fixedly connected to the first cooling water pipe 201, the right end of the surface side of the first cooling water pipe 201 is fixedly connected to the connecting pipe 202, the right end of the surface side of the connecting pipe 202 is fixedly connected to the second cooling water pipe 203, and the upper end of the surface of the second cooling water pipe 203 is fixedly connected to the cooling water outlet 204, so as to quickly conduct heat to the blast furnace cooling water.

[0033] In the technical solution of the present utility model, Figure 3 and Figure 4As shown, the surface of the stirring component 6 is fixedly connected to a fixed plate 601, the upper surface end of the fixed plate 601 is fixedly connected to a motor 602, the upper surface end of the motor 602 is fixedly connected to a transmission rod 603, and the surface side of the transmission rod 603 is fixedly connected to a stirring rod 604, which drives the water inside the water tank to rotate and enhances the uniformity of water heating.

[0034] In the technical solution of the present utility model, Figure 2 As shown, a valve is fixedly connected to the surface side of the drain pipe 7 to seal the drain pipe 7.

[0035] In the technical solution of the present utility model, Figure 1 As shown, multiple sets of supporting legs are fixedly connected to the lower end of the surface of the main body 1 to ensure the overall support.

[0036] In the technical solution of the present utility model, Figure 4 As shown, there are multiple groups of stirring rods 604, which surround each other with the transmission rod 603 as the distribution center, driving the water in the tank to rotate and ensuring uniform heat dissipation of the water.

[0037] In the technical solution of the present utility model, Figure 3 As shown, a water tank is provided inside the main body 1 to cool the high-temperature cooling water of the blast furnace.

[0038] In the technical solution of the present utility model, Figure 3 As shown, the first cooling water pipe 201, the first cooling water pipe 201, and the connecting pipe 202 are all made of copper, which can quickly conduct heat to the high-temperature cooling water of the blast furnace.

[0039] During use, water enters the main body 1 through the water inlet pipe 4. When the water level reaches the water level monitoring position 8, water injection is stopped, and the high-temperature cooling water in the blast furnace enters the first cooling water pipe 201 through the cooling water inlet 2. The high-temperature cooling water enters the connecting pipe 202 and the second cooling water pipe 203 through the first cooling water pipe 201 and is discharged from the cooling water outlet 204. The water in the water tank inside the main body 1 cools the high-temperature cooling water in the pipeline, and the water absorbs the temperature of the high-temperature cooling water. At the same time, the driving motor 602 drives the transmission rod 603 and the stirring rod 604 to rotate, and the stirring rod 604 drives the water inside the water tank to rotate, ensuring that the water inside the water tank is evenly heated and the high-temperature cooling water is quickly cooled. When the water temperature is high due to the temperature monitoring 9, water is injected into the water tank inside the main body 1 through the water inlet pipe 4. When the user needs to use hot water, the water in the water tank can be discharged and used through the drain pipe 7. The user observes the water level of the water tank inside the main body 1 through the water level observation layer 5. When the water level is low, water is injected into the water tank through the water inlet pipe 4.

Claims

1. A waste heat recovery device for circulating cooling water of a blast furnace, comprising a main body (1), characterized in that: The inner left end of the main body (1) is fixedly connected to a water inlet pipe (4), the outer side of the main body (1) is fixedly connected to a controller (3), the inner upper end of the main body (1) is fixedly connected to a cooling water inlet (2), the inner right end of the main body (1) is provided with a water level observation layer (5), the inner right end of the main body (1) is fixedly connected to a drain pipe (7), the inner lower end of the main body (1) is provided with a stirring assembly (6), the inner part of the main body (1) is fixedly connected to a water level monitor (8), and the inner part of the main body (1) is fixedly connected to a temperature monitor (9).

2. The waste heat recovery device for blast furnace circulating cooling water according to claim 1, characterized in that: The lower end of the surface of the cooling water inlet (2) is fixedly connected to a first cooling water pipe (201), the right end of the surface side of the first cooling water pipe (201) is fixedly connected to a connecting pipe (202), the right end of the surface side of the connecting pipe (202) is fixedly connected to a second cooling water pipe (203), and the upper end of the surface side of the second cooling water pipe (203) is fixedly connected to a cooling water outlet (204).

3. The waste heat recovery device for blast furnace circulating cooling water according to claim 1, characterized in that: A fixed plate (601) is fixedly connected to the surface of the stirring assembly (6), a motor (602) is fixedly connected to the upper end of the surface of the fixing plate (601), a transmission rod (603) is fixedly connected to the upper end of the surface of the motor (602), and a stirring rod (604) is fixedly connected to the surface side of the transmission rod (603).

4. The waste heat recovery device for blast furnace circulating cooling water according to claim 1, characterized in that: A valve is fixedly connected to the surface side of the drainage pipe (7).

5. The waste heat recovery device for blast furnace circulating cooling water according to claim 1, characterized in that: The lower end of the surface of the main body (1) is fixedly connected to a plurality of groups of supporting legs.

6. The waste heat recovery device for blast furnace circulating cooling water according to claim 3, characterized in that: There are multiple groups of stirring rods (604), and the multiple groups of stirring rods (604) surround each other with the transmission rod (603) being the distribution center.

7. The waste heat recovery device for blast furnace circulating cooling water according to claim 1, characterized in that: A water tank is provided inside the main body (1).

8. The waste heat recovery device for blast furnace circulating cooling water according to claim 2, characterized in that: The first cooling water pipe (201), the first cooling water pipe (201), and the connecting pipe (202) are all made of copper.

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