CN221071549U

CN221071549U - Cooling wall for blast furnace

Info

Publication number: CN221071549U
Application number: CN202321162901.1U
Authority: CN
Inventors: 刘东东; 曹海波; 李春晓; 闫丽峰; 闫晓影; 赵冬火
Original assignee: Hebei Wanfeng Metallurgical Spare Parts Co ltd
Current assignee: Hebei Wanfeng Metallurgical Spare Parts Co ltd
Priority date: 2023-05-15
Filing date: 2023-05-15
Publication date: 2024-06-04
Anticipated expiration: 2033-05-15

Abstract

The utility model relates to a stave for a blast furnace, comprising: a body comprising a hot face and a cold face, the body comprising one or more first cooling conduits therein, each of the one or more first cooling conduits being connected to a corresponding first water inlet and first water outlet; and one or more second cooling ducts disposed on and in contact with the cold face of the body in a dispersed manner; the one or more second cooling pipes are each connected to a corresponding second water inlet and second water outlet. The utility model can ensure that the cooling equipment in the blast furnace can work stably and normally, increase the heat exchange efficiency of the water channel of the cooling equipment, ensure that the heat in the blast furnace can be discharged smoothly through the cooling wall, avoid the damage of the heat in the blast furnace to the cooling wall, prolong the service life and create higher economic benefit.

Description

Cooling wall for blast furnace

Technical Field

The present utility model relates to a cooling device for a blast furnace, and in particular to a stave for a blast furnace.

Background

The most direct purpose of the existing blast furnace cooling wall is to smoothly guide out the heat transferred in the blast furnace, so that high-temperature heat flow is prevented from directly reaching the furnace shell; the existing copper-steel composite cooling wall is a water channel, and can cause serious reduction of the heat exchange efficiency of the cooling wall and even failure of cooling equipment due to some reasons, and the cooling wall is generally characterized by a series of problems such as water pipe fracture, body deformation and the like, and even furnace shutdown is caused under serious conditions, so that huge economic loss is caused.

Disclosure of utility model

Aiming at the technical problems in the prior art, the utility model provides the cooling wall for the blast furnace, and the second cooling pipeline structure is arranged to ensure that cooling equipment in the blast furnace can work stably and normally, increase the heat exchange efficiency of a water channel of the cooling equipment, prolong the service life and create higher economic benefit.

A stave for a blast furnace includes: a body comprising a hot face and a cold face, the body comprising one or more first cooling conduits therein, each of the one or more first cooling conduits being connected to a corresponding first water inlet and first water outlet; and one or more second cooling ducts disposed on and in contact with the cold face of the body in a dispersed manner; the one or more second cooling pipes are each connected to a corresponding second water inlet and second water outlet.

Optionally, the one or more second cooling ducts are secured by one or more stiffening ribs on the cold face.

Optionally, the one or more reinforcing ribs include one or more holes for the one or more second cooling ducts to pass through.

Optionally, the one or more second cooling pipes are assembled and welded to the cold face of the body at the portions thereof connected to the one or more reinforcing ribs.

Optionally, the one or more second cooling tubes are not welded to the cold face except at the weld portion.

Optionally, further comprising a casting material on the cold face of the body, the casting material covering the one or more second cooling tubes.

Optionally, the one or more second cooling tubes comprise a plurality of parallel tube segments, the distance between the plurality of parallel tube segments being no greater than 0.3m,0.5m, or 0.8m.

Optionally, the through-flow diameter of the one or more second cooling pipes is 20-65 mm.

Optionally, it comprises at least two of said second cooling pipes.

Optionally, the one or more second cooling tubes have a higher tube distribution density above and below the cold face than the middle tube distribution density.

The utility model can ensure that the cooling equipment in the blast furnace can work stably and normally, increase the heat exchange efficiency of the water channel of the cooling equipment, ensure that the heat in the blast furnace can be discharged smoothly through the cooling wall, avoid the damage of the heat in the blast furnace to the cooling wall, prolong the service life and create higher economic benefit.

Drawings

Preferred embodiments of the present utility model will be described in further detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic side view of a stave for a blast furnace according to an embodiment of the present utility model;

FIG. 2 is a schematic view showing a stave perspective structure for a blast furnace according to an embodiment of the present utility model; and

Fig. 3 is a schematic view showing a cooling wall cold face direction structure for a blast furnace according to an embodiment of the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration specific embodiments of the application. In the drawings, like reference numerals describe substantially similar components throughout the different views. Various specific embodiments of the application are described in sufficient detail below to enable those skilled in the art to practice the teachings of the application. It is to be understood that other embodiments may be utilized or structural, logical, or electrical changes may be made to embodiments of the present application.

The utility model provides a cooling wall for a blast furnace, wherein fig. 1 is a schematic side structure diagram of the cooling wall for the blast furnace according to one embodiment of the utility model, fig. 2 is a schematic side structure diagram of the cooling wall for the blast furnace according to one embodiment of the utility model, and fig. 3 is a schematic side structure diagram of a cooling surface of the cooling wall for the blast furnace according to one embodiment of the utility model, as shown in fig. 1 to 3.

A stave for a blast furnace, comprising: a body 101. The body 101 comprises a hot face 103 and a cold face 102, the body 101 comprising one or more first cooling ducts 113 located therein, the one or more first cooling ducts 113 being each connected to a corresponding first water inlet 111 and first water outlet 112. And one or more second cooling pipes 123 disposed on the cold face 102 of the body 101 in a dispersed manner and in contact with the cold face 102. One or more second cooling pipes 123 are each connected to the corresponding second water inlet 121 and second water outlet 122.

As shown in fig. 2 and 3, the present utility model proposes a stave for a blast furnace, which is used for cooling a blast furnace apparatus. Wherein the hot face 103 is closer to the blast furnace interior, the hot face 103 transfers heat of the blast furnace interior to the first cooling duct 113. In the prior art, the stave generally only comprises cooling pipes 113 through which heat is transferred directly to the cold face 102. Due to the extremely high temperatures in the blast furnace, a large amount of heat is transferred from the hot face 103 directly to the cold face 102 via the cooling pipes 113. The large amount of heat is not sufficiently in contact with the cooling duct 113, resulting in a reduction in the cooling wall heat exchange efficiency, and the large amount of heat applied to the cooling wall cold face 102 also results in damage to the cooling wall.

The utility model further comprises one or more second cooling ducts 123 distributed over the cold face 102 of the body 101 and in contact with the cold face 102. Part of heat in the blast furnace is transferred to the cold surface 102 through the first cooling pipeline 113 and then transferred to the second cooling pipeline 123 through the cold surface 102, the second cooling pipeline 123 can enable the heat in the blast furnace to be in full contact with the cooling pipeline, and the heat exchange efficiency of the cooling wall is improved through secondary heat exchange of the second cooling pipeline 123. Similarly, after the secondary heat exchange, the internal heat can be effectively prevented from being transferred to the furnace shell, and the cooling wall is enabled to be in a stable state as a whole.

In some embodiments, one or more second cooling ducts 123 are secured by one or more stiffening ribs 131 on the cold face 102. The reinforcing ribs 131 can enhance the mechanical strength of the cooling wall and also can serve to fix the cooling pipe 123.

In some embodiments, the one or more stiffening ribs 131 include one or more holes 132 for the one or more second cooling ducts 123 to pass through. In some embodiments, the one or more second cooling tubes 123 are assembled and welded to the cold face 102 of the body 101 at the portions thereof that connect with the one or more stiffening ribs 131. In some embodiments, the one or more second cooling tubes 123 are not welded to the cold face except at the weld portion. The second cooling pipe 123 is welded to the cold face 102 of the body 101 only through the portion connected by the one or more reinforcing ribs 131, so that welding spots are reduced on the premise of ensuring connection stability, and the manufacturing process is simpler.

In some embodiments, further comprising a casting material on the cold face 102 of the body 101, the casting material covering the one or more second cooling tubes 123. The casting material has the functions of further fixing the second cooling pipe 123, assisting the second cooling pipe 123 in heat dissipation, and the like.

In some embodiments, the one or more second cooling tubes 123 comprise a plurality of parallel tube segments, the distance between the plurality of parallel tube segments being no greater than 0.3m,0.5m, or 0.8m.

In some embodiments, the through-flow diameter of the one or more second cooling pipes 123 is 20-65 mm.

In some embodiments, it includes at least two second cooling tubes 123.

In some embodiments, the one or more second cooling tubes 123 have a higher tube density above and below the cold face 102 than the middle tube density. In some embodiments, the contact area of the second cooling pipe 123 may be increased by providing the second cooling pipe 123 in a coil manner. The distribution density above and below the cold surface 102 is higher than the middle distribution density, and the contact area of the second cooling pipe 123 can also be higher, so that the cooling water passes through the first water inlet 111 and the first water outlet 112 (the water inlet and the water outlet are not fixed in the application, and the water outlet is only exemplified in the figure), more heat can be accumulated at the water outlet 112, and the heat exchange efficiency can be improved when the distribution density above and below the cold surface 102 is higher than the middle distribution density.

In some embodiments, the stave further comprises a dovetail groove 141 on the hot face 103.

The above embodiments are provided for illustrating the present utility model and not for limiting the present utility model, and various changes and modifications may be made by one skilled in the relevant art without departing from the scope of the present utility model, therefore, all equivalent technical solutions shall fall within the scope of the present disclosure.

Claims

1. A stave for a blast furnace, comprising:

A body comprising a hot face and a cold face, the body comprising one or more first cooling conduits therein, each of the one or more first cooling conduits being connected to a corresponding first water inlet and first water outlet; and

One or more second cooling ducts disposed in a scattered manner on and in contact with the cold face of the body; the one or more second cooling pipelines are respectively connected with the corresponding second water inlet and the second water outlet;

The one or more second cooling ducts are secured by one or more stiffening ribs on the cold face;

The one or more second cooling tubes have a higher tube distribution density above and below the cold face than the middle tube distribution density.

2. The stave for a blast furnace of claim 1 wherein the one or more strengthening ribs comprise one or more holes for the one or more second cooling pipes to pass through.

3. The stave for a blast furnace according to claim 2, wherein said one or more second cooling pipes are assembled welded to said cold face of said body at the portions thereof connected to said one or more reinforcing ribs.

4. A stave for a blast furnace according to claim 3, wherein said one or more second cooling pipes are not welded to said cold face except for a welded portion.

5. The stave for a blast furnace according to claim 1, characterized by further comprising a casting material on said cold face of said body, said casting material covering said one or more second cooling pipes.

6. The stave for a blast furnace according to claim 1, characterized in that said one or more second cooling pipes comprise a plurality of parallel pipe sections, the distance between said plurality of parallel pipe sections being not more than 0.3m,0.5m, or 0.8m.

7. The stave for a blast furnace according to claim 6, characterized in that said one or more second cooling pipes have a through-flow diameter of 20 to 65mm.

8. The stave for a blast furnace according to claim 1, characterized in that it comprises at least two of said second cooling pipes.