CN217383810U

CN217383810U - Off-line cooling device for electric furnace steelmaking furnace body

Info

Publication number: CN217383810U
Application number: CN202221418197.7U
Authority: CN
Inventors: 李蛟; 肖园; 熊健; 鄂剑; 周永红; 程金保
Original assignee: Shougang Guiyang Special Steel Co Ltd
Current assignee: Shougang Guiyang Special Steel Co Ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-09-06
Anticipated expiration: 2032-06-08

Abstract

The utility model discloses an electric stove steelmaking furnace body off-line cooling device, including coolant tank (1), the lower part of coolant tank (1) is connected to the cooling tube of electric stove steelmaking furnace body (2) through inlet channel (3), the upper portion of coolant tank (1) is connected to on the cooling tube box of electric stove steelmaking furnace body (2) through return water pipe (4). The utility model can rapidly cool the high-temperature furnace body, achieve the ultra-high cooling effect, avoid cooling on the production line, save the production time, greatly reduce the time for replacing the furnace body, and lead more time to be put into production; the furnace body can be maintained and overhauled more conveniently and rapidly; the problem that the high-power pump needs to be started continuously when the furnace body tests water is solved, and energy consumption is saved.

Description

Off-line cooling device for electric furnace steelmaking furnace body

Technical Field

The utility model relates to an off-line cooling device for an electric furnace steelmaking furnace body, which belongs to the technical field of metallurgical equipment.

Background

An electric furnace body for electric furnace steelmaking is necessary equipment for electric furnace smelting production, and two furnace bodies are usually required to be replaced and used alternately. When the furnace body is used to a certain degree, the consumption of the internal refractory materials is almost the same, and the furnace body needs to be replaced in order to ensure the smelting safety. The temperature of the electric furnace during smelting is very high and usually reaches about 1600 ℃, and after smelting is finished, the electric furnace needs to be cooled to about 200 ℃ to cut off cooling water of the electric furnace body to swing and drop the electric furnace body to continue natural cooling, so that the deformation of the furnace body structure under the high-temperature condition is avoided. At present, a furnace body is replaced by cooling to about 200 ℃ on a production line, then hoisting to a furnace body repairing station, and simultaneously hoisting a prepared new furnace body to the production line for use. The method has the defects that the cooling time of the furnace body on the production line is long, about 6 hours, the working efficiency is greatly reduced, and the operation is complicated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing an electric furnace steelmaking furnace body off-line cooling device which is convenient to operate, short in cooling time and convenient to overhaul, thereby overcoming the defects of the prior art.

In order to solve the technical problem, the utility model discloses a technical scheme as follows:

the utility model provides an electric stove steelmaking furnace body off-line cooling device, includes cooling water tank, cooling water tank's lower part is connected to the cooling tube of electric stove steelmaking furnace body through the inlet channel, cooling water tank's upper portion is connected to the cooling tube of electric stove steelmaking furnace body through the return water pipe.

Preferably, the water inlet pipeline is provided with a pipeline pressurizing pump and a water inlet pipeline stop valve.

Preferably, two pipeline pressure pumps and two water inlet pipeline stop valves are arranged on the water inlet pipeline in parallel.

Preferably, a compressed air inlet pipe is further installed on one side, close to the electric furnace steel-making furnace body, of the water inlet pipeline, and a ball valve is installed on the compressed air inlet pipe.

Preferably, a return pipe stop valve and a pressure gauge are installed on the return pipe.

Preferably, a first partition plate and a second partition plate are installed in the cooling water tank cavity, the cooling water tank cavity is divided into three cooling zones by the first partition plate and the second partition plate, a first water baffle is installed at the upper part of the first cooling zone, a second water baffle is installed at the upper part of the third cooling zone, a third water baffle is installed in the middle of the third cooling zone, and a fourth water baffle is installed at the lower part of the third cooling zone; a water passing channel is reserved between the bottom of the first clapboard and the wall of the cooling water tank; a secondary water return pipe is arranged at the top end of the second partition plate; and two compressed air-cooled pipes are arranged on the box wall of the third cooling zone and are respectively positioned below the second water baffle and the third water baffle.

Preferably, the water return pipeline extends into the cooling water tank, the end of the water return pipeline is sealed, and a plurality of small holes are drilled in the pipe wall of the water return pipeline.

Preferably, the first water baffle is positioned below a water return pipe extending into the cooling water tank, and the second water baffle is positioned below the secondary water return pipe.

Preferably, a water level and water temperature monitoring device is mounted on the wall of the cooling water tank.

Preferably, a heat dissipation port and an air exhaust port are arranged at the top of the cooling water tank.

The utility model has the advantages that: compared with the prior art, the utility model can greatly reduce the time for replacing the furnace body, and lead more time to be put into production; the furnace body can be maintained and overhauled more conveniently and rapidly; the problem that the high-power pump needs to be started continuously when the furnace body tests water is solved, and energy consumption is saved.

Use the utility model discloses afterwards, when electric stove steelmaking furnace body was changed, need not the online furnace body cooling of waiting for, can directly cool off furnace body handling to cooling point, online cooling time when reducing the change furnace body increases economic benefits.

The utility model discloses be provided with the return water pipe stop valve on return water pipe to install two pipeline force (forcing) pumps on inlet channel, start two pipeline force (forcing) pumps simultaneously, and close the return water pipe stop valve, can make the inside great water pressure that produces of furnace body, can inspect oven cooling pipeline whether have the phenomenon of leaking, the convenient maintenance.

The utility model discloses be provided with the compressed air intake pipe on the inlet tube, close the return water pipeline stop valve and blow in compressed air, can blow out the remaining water in the oven, do simultaneously and blow in hot-blast inside oven pipeline and dry, prevent to produce phenomenons such as incrustation scale or moist production corrosion, jam because of having water.

The utility model discloses utilize the cooling water circulation mode to come out with the heat replacement in the electric stove furnace body, make the furnace body incessant cool off, reach super high cooling effect. The utility model discloses a cooling water tank divides the triplex to cool down water respectively, and wherein the third part adopts the forced air cooling mode, reduces the temperature with higher speed, reaches better cooling effect.

Drawings

FIG. 1 is a schematic structural view of an off-line cooling device of an electric furnace steelmaking furnace body of the present invention;

FIG. 2 is a schematic view of the water tank structure of the off-line cooling device of the electric furnace steelmaking furnace body of FIG. 1.

Detailed Description

The following provides a more detailed description of the present invention with reference to the accompanying drawings and examples.

Example 1: referring to fig. 1 to 2, the off-line cooling device for the electric furnace steelmaking furnace body comprises a cooling water tank 1, wherein the cooling water tank 1 is fixed beside a furnace body maintenance position. The lower part of the cooling water tank 1 is connected to a cooling pipeline of the electric furnace steelmaking furnace body 2 through a water inlet pipeline 3, and the upper part of the cooling water tank 1 is connected to the cooling pipeline of the electric furnace steelmaking furnace body 2 through a water return pipeline 4. Water in the cooling water tank 1 is pressurized by the water inlet pipeline 3 and the pipeline pressurizing pump 5, and then is conveyed to the cooling pipeline of the electric furnace steelmaking furnace body 2, and then is returned to the cooling water tank 1 again through the water return pipeline 4, so that the high-temperature furnace body can be rapidly cooled, the ultrahigh cooling effect is achieved, cooling on a growth line is not needed, the production time is saved, and the greater economic benefit is created. The cooling water tank 1 is made of a 10mm steel plate, the water return pipeline 4 is a steel pipe with the diameter of 100mm and extends 500mm into the tank body, the water return pipeline 4 extends into the cooling water tank 1, the end of the water return pipeline 4 is sealed, and a plurality of small holes with the diameter of 20mm are drilled in the pipe wall of the water return pipeline 4. The water inlet pipeline 3 is made of a steel pipe with the diameter of 100mm, a flange plate is arranged at the tail end of the water inlet pipeline 3, and a flange plate is arranged at the front end of the water return pipeline 4.

The water inlet pipeline 3 is provided with a pipeline pressure pump 5 and a water inlet pipeline stop valve 6. Two pipeline pressure pumps 5 and two water inlet pipeline stop valves 6 are arranged on the water inlet pipeline 3 in parallel. The pipe pressurizing pump 5 is for pressurizing the cooling water in the feed water pipe 3. A one-use one-standby mode is adopted. A compressed air inlet pipe 7 is arranged on one side of the water inlet pipeline 3 close to the electric furnace steel-making furnace body 2, and a ball valve is arranged on the compressed air inlet pipe 7. The compressed air inlet pipe 7 is made of a steel pipe with the diameter of 25 mm. The water return pipeline 4 is provided with a water return pipeline stop valve 8 and a pressure gauge 9, and the cooling water circulation condition in the furnace body can be monitored at any time through the pressure gauge 9.

A first partition plate 10 and a second partition plate 11 are installed in the cavity of the cooling water tank 1, the cavity of the cooling water tank 1 is divided into three cooling zones by the first partition plate 10 and the second partition plate 11, a first water baffle 13 is installed on the upper portion of a first cooling zone 12, a second water baffle 14 is installed on the upper portion of a third cooling zone 19, a third water baffle 15 is installed in the middle of the third cooling zone 19, and a fourth water baffle 16 is installed on the lower portion of the third cooling zone 19; a water passing channel 17 is reserved between the bottom of the first clapboard 10 and the wall of the cooling water tank 1; a secondary water return pipe 18 is arranged at the top end of the second partition plate 11, and the top end of the second partition plate 11 is 300mm away from the tank cover; two compressed air-cooled pipes 20 are arranged on the box wall of the third cooling area 19, and the two compressed air-cooled pipes 20 are respectively positioned below the second water baffle 14 and the third water baffle 15. The compressed air cooling pipe 20 is made of a steel pipe with the diameter of 25mm, the front end of the compressed air cooling pipe 20 is provided with a sleeve head, the tail end of the compressed air cooling pipe 20 inclines upwards, and the angle is not larger than 15 degrees. The compressed air blown in through the compressed air-cooling duct 20 can simultaneously perform compressed air-cooling of the water falling through the breakwater. The first water baffle 13 is positioned below the water return pipe 4 extending into the cooling water tank 1, and the second water baffle 14 is positioned below the secondary water return pipe 18. And water level and water temperature monitoring equipment is installed on the wall of the cooling water tank 1 and is installed by adopting a conventional product sold in the market and used for monitoring the water level and the water temperature in the cooling water tank 1. A heat radiation port 21 and an air exhaust port 22 are installed at the top of the cooling water tank 1 for exhausting hot air.

Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. An off-line cooling device for an electric furnace steelmaking furnace body is characterized in that: the cooling water tank comprises a cooling water tank (1), wherein the lower part of the cooling water tank (1) is connected to a cooling pipeline of an electric furnace steelmaking furnace body (2) through a water inlet pipeline (3), and the upper part of the cooling water tank (1) is connected to the cooling pipeline of the electric furnace steelmaking furnace body (2) through a water return pipeline (4).

2. The off-line cooling apparatus for an electric steelmaking furnace body as set forth in claim 1, wherein: the water inlet pipeline (3) is provided with a pipeline pressure pump (5) and a water inlet pipeline stop valve (6).

3. The off-line cooling apparatus for an electric steelmaking furnace body as set forth in claim 2, wherein: the water inlet pipeline (3) is provided with two pipeline pressure pumps (5) and two water inlet pipeline stop valves (6) in parallel.

4. The off-line cooling apparatus for an electric steelmaking furnace body as set forth in claim 1, wherein: a compressed air inlet pipe (7) is arranged on one side, close to the electric furnace steelmaking furnace body (2), of the water inlet pipeline (3), and a ball valve is arranged on the compressed air inlet pipe (7).

5. The off-line cooling apparatus for an electric steelmaking furnace body as set forth in claim 1, wherein: the water return pipeline (4) is provided with a water return pipeline stop valve (8) and a pressure gauge (9).

6. The off-line cooling apparatus for an electric steelmaking furnace body as set forth in claim 1, wherein: a first partition plate (10) and a second partition plate (11) are installed in the cavity of the cooling water tank (1), the cavity of the cooling water tank (1) is divided into three cooling zones by the first partition plate (10) and the second partition plate (11), a first water baffle (13) is installed on the upper portion of the first cooling zone (12), a second water baffle (14) is installed on the upper portion of the third cooling zone (19), a third water baffle (15) is installed in the middle of the third cooling zone (19), and a fourth water baffle (16) is installed on the lower portion of the third cooling zone (19); a water passing channel (17) is reserved between the bottom of the first clapboard (10) and the wall of the cooling water tank (1); a secondary water return pipe (18) is arranged at the top end of the second clapboard (11); two compressed air-cooled pipes (20) are arranged on the box wall of the third cooling area (19), and the two compressed air-cooled pipes (20) are respectively positioned below the second water baffle (14) and the third water baffle (15).

7. The off-line cooling apparatus for an electric steelmaking furnace body as set forth in claim 1, wherein: the water return pipeline (4) extends into the cooling water tank (1), the end of the water return pipeline (4) is sealed, and a plurality of small holes are drilled on the pipe wall of the water return pipeline (4).

8. The off-line cooling apparatus for an electric steelmaking furnace body as set forth in claim 6, wherein: the first water baffle (13) is positioned below the water return pipeline (4) extending into the cooling water tank (1), and the second water baffle (14) is positioned below the secondary water return pipeline (18).

9. The off-line cooling apparatus for an electric steelmaking furnace body as set forth in claim 1, wherein: and water level and water temperature monitoring equipment is arranged on the wall of the cooling water tank (1).

10. The off-line cooling apparatus for an electric steelmaking furnace body as set forth in claim 1, wherein: the top of the cooling water tank (1) is provided with a heat dissipation port (21) and an exhaust port (22).