CN202766547U - Cast copper cooling wall without buried pipe - Google Patents

Abstract

The utility model discloses a cast copper stave without buried pipes. The key point is that the copper stave includes a stave body, a boss is arranged on the cold surface of the stave body, and a boss is arranged inside the boss and the stave body. There are cooling pipes connected together, in which the boss and the cooling channel inside the stave are integrally cast, and threads are processed on the boss to connect with external pipes. Since the utility model has no embedded water pipes, there is no problem that the overall heat transfer efficiency of the cooling wall is low due to the poor combination rate between the embedded water pipes and the wall body of the traditional cast copper cooling wall. Even if water leaks at the connection, it will not flow into the furnace, ensuring the safety of blast furnace production.

Description

A cast copper stave without buried pipe

technical field

The utility model relates to a cooling wall.

Background technique

As an efficient blast furnace cooling equipment, copper stave is widely used in blast furnaces at home and abroad. The currently used copper staves are divided into two types: traditional buried pipe cast copper staves and rolled drilled copper staves, but these two copper staves have disadvantages. Among them, the traditional buried pipe cast copper stave has cast copper or other metal pipes embedded inside the wall. Due to the limitation of the casting process, the wall and the pipe are often not completely fused, and there is an air gap. Gaps will seriously affect the heat conduction effect of the copper stave, which in turn will cause the stave to burn out and leak water. The rolling and drilling type copper cooling stave is to drill cooling channels on the whole rolled copper plate first, and then weld the metal pipes to the cold rolled copper plate with the drilled holes. Although this manufacturing method does not need to embed metal pipes, it avoids the air gap between the pipe and the wall, but the weld between the metal pipe and the copper plate is the weak link of this type of stave. Once there is a problem with the weld, the cooling water It will leak into the blast furnace from the weld, and the consequences will be very serious.

Contents of utility models

The purpose of the utility model is to provide a cast copper stave without buried pipes, which can not only realize good cooling of the furnace wall of the blast furnace, but also avoid the hidden danger of water leakage into the blast furnace.

In order to achieve the above purpose, the technical means adopted by the utility model is: a cast copper stave without buried pipe, which is characterized in that: the copper stave includes a stave body, and a boss is arranged on the cold surface of the stave body , the inside of the boss and the stave body are provided with cooling pipes connected together, wherein the cooling channels inside the boss and the stave are integrally cast, and the boss is processed with threads to connect with the external piping. After installation, the boss out of the furnace shell.

The hot side of the stave body is provided with inlaid refractory bricks or sprayed with a layer of unshaped refractory material.

Bellows are also installed at the boss, and the two ends of the bellows are respectively welded to the steel rings on the furnace shell and the stave boss.

The cross-section of the cooling channel is a round hole or a flat hole, or other structural forms that can be realized by technology.

The utility model adopts the copper stave formed by integral casting, which can effectively take away the heat transmitted from the blast furnace through the cooling water, and protect the furnace wall and the stave itself. Since there are neither buried pipes nor welds on the wall, on the one hand, air gaps are avoided, so that the high thermal conductivity of copper can be fully utilized to ensure high cooling strength and good cooling effect; on the other hand, it will not crack due to welds resulting in water leakage into the furnace. The cooling stave protruding out of the furnace shell is connected with the external piping, even if the interface between the protruding platform and the piping is damaged and leaks, the cooling water will only flow to the outside of the blast furnace instead of leaking into the furnace, so as to ensure that the cooling stave can work stably for a long time , which is conducive to the stable operation and longevity of the blast furnace.

Description of drawings

Fig. 1 is the front view of cooling wall of the present utility model;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is a partially enlarged view of A in Fig. 2;

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further:

As shown in Figures 1 to 3, a boss 2 is cast on the cold surface of the stave body 1, a cooling channel 3 is provided in the body and the boss, and a thread 4 is processed on the boss 2, the body, the boss and the cooling channel It is molded by integral casting. The hot side of the stave can be inlaid with refractory bricks 5 or sprayed with an amorphous refractory layer to protect the wall. The bellows 7 are also installed at the stave boss 2, and the two ends of the bellows are respectively welded to the furnace shell 6 and the steel ring 8 on the stave boss to seal and absorb the heat of the stave and the furnace shell after the furnace is turned on. resulting in uneven deformation. After the stave is installed, the external pipe 9 is connected to the cooling channel 3 in the stave through the thread 4 processed on the boss, and then the cooling water is introduced, and the stave can start to work.

Claims (4)

1. a casting copper stave without buried pipe, it is characterized in that: described copper stave comprises stave body, the cold face of stave body is provided with boss, and boss inside and stave body are provided with connecting The cooling pipe together, in which the boss and the cooling channel inside the cooling wall are integrally cast, and the boss is processed with threads to connect with the external piping. 2. The cast copper stave without buried pipes according to claim 1, characterized in that: the hot side of the stave body is provided with inlaid refractory bricks or sprayed with an amorphous refractory layer. 3. The cast copper cooling stave without buried pipe as claimed in claim 1 or 2, characterized in that: bellows are also installed at the boss, and the two ends of the bellows are respectively connected to the furnace shell and the cooling stave boss. The steel ring is welded together. 4. The cast copper cooling stave without buried pipes according to claim 3, characterized in that: the section of the cooling channel is a round hole or a flat hole.

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