CN212451472U - Blast furnace cooling wall structure - Google Patents

Abstract

The utility model relates to a blast furnace stave structure belongs to blast furnace smelting equipment technical field, including the multistage stave, be equipped with a plurality of cooling tubes in the wall body of every section stave, the lower extreme of each section stave is the water inlet, the upper end is the delivery port, the stove outer covering of the blast furnace that is located the stave outside is worn out to water inlet and delivery port, the cooling tube of adjacent upper and lower section stave connects gradually through the contact pipe, form a plurality of cooling passage from bottom to top, the vertical parallel range of a plurality of cooling tubes in the wall body of every section stave, the water inlet and the delivery port of adjacent cooling tube are the level stagger respectively and arrange, water inlet and the delivery port that arrange with the level stagger of cooling tube on the stove outer covering are equipped with the trompil respectively one-to-one. The cooling tube directly advances directly out, and trompil and water inlet and delivery port are a pair of many settings respectively on solving current stove outer covering, lead to the trompil to destroy stove outer covering structural strength too greatly, and cooling tube and contact tube have more to buckle and hinder the problem that cooling water flows, contact tube and valve installation difficulty.

Description

Blast furnace cooling wall structure

Technical Field

The utility model belongs to the technical field of blast furnace smelting equipment, a blast furnace stave structure is related to.

Background

The wall structure of a blast furnace can be roughly divided into a refractory material, a cooling wall, a filler and a furnace shell from inside to outside. The cooling wall is important cooling equipment of a blast furnace, the cooling wall is generally made of copper, cast iron or cast steel, cooling pipes are cast in the wall body of the cooling wall, after cast-in steel pipes in each of the upper section of the cooling wall and the lower section of the cooling wall penetrate out of a furnace shell of the blast furnace on the outer side of the cooling wall, a cooling channel from bottom to top is formed through connection of connecting pipes, cooling water flowing at a high speed is introduced into the cooling channel, and heat of the cooling wall is rapidly taken away so as to maintain stable production of the blast furnace.

The cooling pipes need to penetrate through the shell of the blast furnace, so that holes need to be formed in the shell of the blast furnace, all water inlets and all water outlets are generally arranged at one position in a centralized manner, and the shell of the cooling pipe corresponding to the water inlets and the water outlets arranged in the centralized manner is provided with one hole respectively, i.e. the holes in the shell of the cooling pipe are formed in a one-to-many manner (see fig. 1 and 2). Or every three water inlets and every three water outlets are respectively arranged in a centralized way, and the furnace shell is provided with a hole corresponding to every three water inlets and every three water outlets (see figures 3 and 4). Because the stove outer covering requires the interval between two trompils to be greater than 100mm, so the arrangement of above-mentioned two kinds of water inlets and delivery port can not realize that each cooling tube corresponds trompil alone on the stove outer covering, and need correspond three or more cooling tubes and concentrate on opening great hole on the blast furnace stove outer covering, whole blast furnace stove outer covering has at least to exceed such trompil of a thousand, can produce great stress concentration and appear breaking in great trompil department like this, this has led to the fact great destruction to the structure of blast furnace stove outer covering, be unfavorable for blast furnace stove outer covering intensity stability, big hole is sealed not good simultaneously, produce high temperature coal gas easily and reveal, red phenomenon takes place when leading to the stove outer covering, influence the life-span of blast furnace stove outer covering, also can lead to the safety problem easily.

The existing structure with three or more water inlets and water outlets respectively arranged at one position is characterized in that cooling pipes close to the water inlets and the water outlets are bent to meet the requirement of centralized arrangement. The blast furnace has at least ten sections of cooling walls from bottom to top, the cooling pipes of each section of cooling wall are connected by connecting pipes to form a long cooling channel from bottom to top, cooling water flowing at high speed is arranged in the cooling channel, if the cooling channel is bent too much, especially bent at right angles, great resistance loss is generated when the cooling water flows, the great influence is exerted on the cooling effect, a water supply system is required to provide greater power, and the requirements of energy conservation and consumption reduction are not met. Meanwhile, when the cooling pipe of the cooling wall is damaged and needs to be maintained through the pipe, the elbows are too many to be beneficial to maintenance and construction of the through pipe.

The cooling pipe of two sections upper and lower staves need be connected together by the contact pipe after wearing out the blast furnace stove outer covering, current three and above water inlet and delivery port concentrate on the structure of arranging in a department respectively, because a great amount of water inlet and delivery port concentrate on a department respectively when installing the contact pipe, limited by the space, more buckling appears in the contact pipe, be unfavorable for the flow of cooling water, lead to contact pipe and valve installation comparatively complicated moreover, the degree of difficulty is great when the construction, it is long to consume time (see fig. 3 and fig. 4).

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the utility model is to provide a blast furnace stave structure, the internal cooling tube of stave wall advances directly out, do not exist and buckle, water inlet and delivery port are no longer concentrated and are arranged, trompil and water inlet and delivery port on the stove outer covering set up one to one and not a pair of many, solve present three and above water inlet and delivery port and concentrate the structure of arranging in one separately, need establish great trompil on the stove outer covering and destroy the structural strength of stove outer covering, it reveals not well to produce high temperature coal gas easily sealed, reduce and lose stove outer covering life, and arrange because of concentrating and lead to cooling tube and contact tube to have more the buckling to obstruct cooling water to flow, be unfavorable for the later stage to wear to manage to maintain, contact tube and valve installation difficulty, long problem when consuming.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a blast furnace stave structure, including the multistage stave, be equipped with a plurality of cooling tubes in the wall body of every section stave, the lower extreme of each section stave is the water inlet, the upper end is the delivery port, the stove outer covering that lies in the blast furnace in the stave outside is worn out to water inlet and delivery port, the cooling tube of adjacent upper and lower section stave connects gradually through the contact pipe, form a plurality of cooling passage from bottom to top, the vertical parallel range of a plurality of cooling tubes in the wall body of every section stave, the water inlet and the delivery port of adjacent cooling tube are the dislocation respectively arranges, the water inlet and the delivery port that arrange with the dislocation of height of cooling tube on the stove outer covering are the one-to-one respectively is equipped with.

Furthermore, six cooling pipes are arranged in the wall body of each section of cooling wall.

Furthermore, the water inlets of the two adjacent cooling pipes close to one side in the wall body of each section of cooling wall are equal in height, and the water outlets of the two adjacent cooling pipes close to the opposite side are equal in height; the furnace shell is provided with two water inlets with equal height and two water outlets with equal height which are respectively and intensively provided with an opening.

Furthermore, the connecting pipe is communicated with the water inlet of the upper section cooling pipe and the water outlet of the lower section cooling pipe in an inclined straight transition mode in the direction that the plurality of cooling pipes are vertically arranged in parallel in front view.

Furthermore, the outer contour of the connecting pipe is U-shaped, and the connecting pipe is nested inside and outside the connecting pipe on the same inclined straight line.

Further, adjacent cooling tubes in the wall body of each section of cooling wall are equally spaced.

Furthermore, in a plurality of cooling pipes in the wall body of each section of cooling wall, fasteners are respectively arranged below the water inlet with a higher position and above the water outlet with a lower position, and are used for connecting the cooling wall and the furnace shell.

Further, the cooling pipe is a steel pipe.

Further, the connecting pipe is a steel pipe or a hose.

The beneficial effects of the utility model reside in that:

(1) the utility model discloses a blast furnace stave structure, the vertical arrangement of the internal cooling tube of stave wall, the straight-in goes out directly, does not buckle, is favorable to its interior cooling water smooth and easy flow, reduces the resistance loss, ensures the cooling effect, reduces water supply system's consumption of power, reaches energy saving and consumption reduction's purpose, the later stage poling of also being convenient for simultaneously is maintained. The water inlet and the water outlet are not concentrated and arranged any more, the distribution is dispersed, the open holes in the furnace shell can correspond to the water inlet and the water outlet one by one, and each open hole in the furnace shell is not required to be large, so that the stress concentration is reduced, the structural strength of the furnace shell is prevented from being excessively damaged, the furnace shell is easy to seal, the high-temperature gas leakage is prevented, the production safety is ensured, and the service life of the furnace shell is ensured. Simultaneously, water inlet and delivery port no longer concentrate and arrange, distribute comparatively dispersedly, and the installation space of contact pipe obtains the release, the quick, simple and convenient installation of the contact pipe of being convenient for, contact pipe itself also can not necessarily confine the space and have too many buckles.

(2) The utility model discloses a blast furnace cooling wall structure, in order to further ensure the cooling effect, the cooling dead zone is reduced as much as possible, the cooling pipe close to one side of the cooling wall is prolonged as much as possible, and the water inlet of the cooling pipe extends downwards to be as high as the water inlet of the adjacent cooling pipe; the cooling pipes close to the opposite sides of the cooling wall are also extended as much as possible, and the water outlets of the cooling pipes extend upwards to be as high as the water outlets of the adjacent cooling pipes. The furnace shell is provided with openings corresponding to the two water inlets with the same height and the two water outlets with the same height respectively in a centralized mode, the openings are arranged locally one by one, the openings are not too large, the cooling effect is considered on the premise that the structural strength of the furnace shell cannot be greatly influenced, and the cooling dead zone is reduced.

Drawings

In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention provides the following drawings for illustration:

FIG. 1 is a schematic front view showing a pair of six openings on a shell of a blast furnace and a water inlet and a water outlet of a cooling pipe in the prior art;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a schematic front view of a structure for connecting an opening on a shell of a blast furnace with a water inlet and a water outlet of a cooling pipe in a one-to-three manner and a connecting pipe in the prior art;

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a schematic front view of a cooling wall structure of a blast furnace according to the present invention;

fig. 6 is a side view of fig. 5.

Reference numerals: the cooling device comprises a cooling wall 1, a cooling pipe 2, a water inlet 3, a water outlet 4, an opening 5, a furnace shell 6, a connecting pipe 7 and a fastener 8.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 5 and fig. 6, a blast furnace stave structure, including multistage stave 1, be equipped with six cooling tubes 2 in the wall body of every section stave 1, the lower extreme of each section stave 2 is water inlet 3, the upper end is delivery port 4, water inlet 3 and delivery port 4 wear out the stove outer covering 6 of the blast furnace that is located the stave 1 outside, the cooling tube 2 of adjacent upper and lower section stave 1 connects gradually through connecting pipe 7, form six cooling passage from bottom to top, six vertical parallel and equidistant range of cooling tube 2 in the wall body of every section stave 1, water inlet 3 and delivery port 4 of adjacent cooling tube 2 are the level-staggered respectively to be arranged, water inlet 3 and delivery port 4 with the level-staggered arrangement of cooling tube 2 on the stove outer covering 6 are equipped with trompil 5 respectively one-to one.

As shown in fig. 5, the water inlets 3 of the two adjacent cooling pipes 2 close to the left side in the wall body of each section of cooling wall 1 are as high as each other, and the water outlets 4 of the two adjacent cooling pipes 2 close to the right side are as high as each other; the furnace shell 6 is provided with two openings 5 corresponding to the two water inlets 3 with the same height and the two water outlets 4 with the same height respectively. That is, the water inlet 3 of the leftmost cooling pipe 2 extends downwards as much as possible, the water outlet 4 of the rightmost cooling pipe 2 extends upwards as much as possible, and the furnace shell 6 is locally provided with a pair of openings 5 in two places, so that the purpose of the design is to reduce the cooling dead zone and ensure the cooling effect on the premise that the pair of openings 5 in two ways are not too large and cannot generate too large influence on the structural strength of the furnace shell 6.

In six cooling pipes 2 in the wall body of each section of cooling wall 1, fasteners 8 are respectively arranged below a water inlet 3 at a higher position and above a water outlet 4 at a lower position and are used for connecting the cooling wall 1 with a furnace shell 6.

The connecting pipe 7 is in inclined straight transition communication with the water inlet 3 of the upper section cooling pipe 2 and the water outlet 4 of the lower section cooling pipe 2 in the direction (as shown in fig. 5) that a plurality of cooling pipes 2 are vertically arranged in parallel in front view. As shown in fig. 6, the connecting pipe 7 has a U-shaped profile, and the connecting pipes 7 on the same inclined straight line are nested inside and outside due to the different U-shaped depths. Compared with the connecting structure of the connecting pipe 7 in the prior art shown in fig. 3 and 4, the connecting pipe 7 has less bending, which is beneficial to reducing the resistance to cooling water and reducing the energy consumption of a water supply system.

In this embodiment, the cooling pipe 2 may be a seamless steel pipe, and the communication pipe 7 may be a steel pipe or a metal hose.

The blast furnace stave structure that this embodiment provided, 1 internal cooling tube 2 of stave is vertical arranges, and straight-in goes out directly, does not buckle, is favorable to its interior cooling water smooth and easy flow, reduces the resistance loss, ensures the cooling effect, reduces water supply system's consumption of power, reaches energy saving and consumption reduction's purpose, the later stage poling of also being convenient for simultaneously is maintained. Water inlet 3 and delivery port 4 no longer concentrate and arrange, distribute comparatively dispersedly, trompil 5 on the stove outer covering 6 can with water inlet 3 and 4 one-to-one of delivery port, then every trompil 5 on the stove outer covering 6 need not be very big, reduce stress concentration, avoid causing excessive destruction to 6 structural strength of stove outer covering, it is easy sealed, prevent high temperature coal gas leakage, ensure production safety, guarantee the 6 life of stove outer covering. Simultaneously, water inlet 3 and delivery port 4 no longer concentrate and arrange, distribute comparatively dispersedly, and the installation space of contact pipe 7 obtains releasing, and the quick, simple and convenient installation of contact pipe 7 of being convenient for also can not necessarily confine the space to contact pipe 7 itself and have too many buckles.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims (9)

1. The utility model provides a blast furnace stave structure, including the multistage stave, be equipped with a plurality of cooling tubes in the wall body of every section stave, the lower extreme of each section stave is the water inlet, the upper end is the delivery port, the stove outer covering that lies in the blast furnace in the stave outside is worn out to water inlet and delivery port, the cooling tube of adjacent upper and lower section stave connects gradually through the contact pipe, form a plurality of cooling passages from bottom to top, a serial communication port, the vertical parallel range of a plurality of cooling tubes in the wall body of every section stave, the water inlet and the delivery port of adjacent cooling tube are the dislocation respectively and arrange, water inlet and the delivery port that arrange with the dislocation of cooling tube on the stove outer covering are the one-to-one respectively is equipped with the.

2. The stave structure of claim 1 wherein six cooling pipes are provided in the wall of each stave segment.

3. The blast furnace stave structure of claim 1 wherein the inlets of the two adjacent cooling pipes on one side of the wall of each stave section are of equal height and the outlets of the two adjacent cooling pipes on the opposite side of the wall are of equal height; the furnace shell is provided with two water inlets with equal height and two water outlets with equal height which are respectively and intensively provided with an opening.

4. The stave structure of claim 1 wherein the communication pipe is inclined to pass straight between the inlet of the upper cooling pipe and the outlet of the lower cooling pipe in a direction in which the plurality of cooling pipes are arranged in parallel vertically.

5. The blast furnace stave structure of claim 4 wherein the cross-over pipes are U-shaped in profile and nested inside and outside the cross-over pipes on the same inclined straight line.

6. The blast furnace stave structure of claim 1 wherein adjacent cooling pipes in the stave body of each stave segment are equally spaced.

7. The blast furnace stave structure of claim 1 wherein fasteners are mounted to the plurality of cooling pipes in the stave body of each stave segment below the higher inlet and above the lower outlet for connecting the stave to the furnace shell.

8. The blast furnace stave structure of claim 1 wherein the cooling pipes are steel pipes.

9. The blast furnace stave structure of claim 1 wherein the communication pipe is a steel pipe or a hose.

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