阅读说明：本技术 高炉炉顶装置及其安装及检修方法 (Blast furnace top device and installation and maintenance method thereof ) 是由 季乐乐 于丹 吴宏扬 王洪 王璐 朱福勇 赵东 刘倩 林杨 崔新亮 陈伟 王振 于 2021-06-24 设计创作，主要内容包括：本发明提供一种高炉炉顶装置及其安装及检修方法,其中的高炉炉顶装置主要包括,炉顶上料成套设备；设置在料罐平台下方的有吊装轨道,在吊装轨道上设置有第一电葫芦；在主皮带上料平台的下方固定设置有第二电葫芦,在主皮带上料平台的上方设置有第三电葫芦；第一电葫芦用于将第一结构组件和第二结构组件吊装至炉顶大平台处,第三电葫芦用于将炉顶大平台处的第一结构组件吊装至主皮带上料平台处,以对第一结构组件进行安装或检修；第二电葫芦用于将炉顶大平台处的第二结构组件吊装至受料斗平台,以对第二结构组件进行安装或检修。利用上述发明能够实现高炉装备的轻量化,缩短建设工期,提高安装及检修的便捷性。(The invention provides a blast furnace top device and an installation and maintenance method thereof, wherein the blast furnace top device mainly comprises a furnace top feeding complete equipment; a hoisting track is arranged below the charging bucket platform, and a first electric hoist is arranged on the hoisting track; a second electric hoist is fixedly arranged below the main belt feeding platform, and a third electric hoist is arranged above the main belt feeding platform; the first electric hoist is used for hoisting the first structural assembly and the second structural assembly to the large furnace top platform, and the third electric hoist is used for hoisting the first structural assembly at the large furnace top platform to the main belt feeding platform so as to install or overhaul the first structural assembly; and the second electric hoist is used for hoisting a second structural component at the large platform of the furnace top to the receiving hopper platform so as to install or overhaul the second structural component. The invention can realize the light weight of blast furnace equipment, shorten the construction period and improve the convenience of installation and maintenance.)

1. A blast furnace roof apparatus, comprising: the device comprises a blast furnace body, a furnace top feeding complete equipment, a main frame arranged above the blast furnace body, and a furnace top large platform, a receiving hopper platform, a charging bucket platform and a main belt feeding platform which are arranged on the main frame in parallel; wherein the content of the first and second substances,

a hoisting track is arranged below the charging bucket platform, and a first electric hoist is arranged on the hoisting track;

a second electric hoist is fixedly arranged below the main belt feeding platform, and a third electric hoist is arranged above the main belt feeding platform;

the first electric hoist is used for hoisting a first structural assembly and a second structural assembly to the large furnace top platform, and the third electric hoist is used for hoisting the first structural assembly at the large furnace top platform to the main belt feeding platform so as to install or overhaul the first structural assembly;

the second electric hoist is used for hoisting a second structural component at the furnace top large platform to the receiving hopper platform so as to install or overhaul the second structural component;

the first electric hoist is also used for hoisting an airtight box to the large platform of the furnace top, and the airtight box is arranged right above the blast furnace body and connected with a steel ring of the furnace top.

2. The blast furnace roof arrangement of claim 1,

one end of the hoisting track is fixed on the main frame, and the other end of the hoisting track extends to a gravity dust collector frame of an external gravity dust collector;

in the horizontal direction, the length of the hoisting track is not less than that of the large platform of the furnace top.

3. The blast furnace roof arrangement of claim 1,

the first structural component comprises a main belt head pulley and a gas diffusion valve;

the main belt head wheel is provided with a main belt for conveying raw materials, and the gas diffusion valve is connected with a crude gas pipeline.

4. The blast furnace roof arrangement of claim 3,

the second structural component comprises a pressure equalizing valve and a furnace top equipment structural member;

furnace roof equipment structure is in including the antifriction plate, the setting of weighing the material jar weigh the antifriction plate of the hopper of material jar top, and set up weigh the material jar with last seal valve and the material stop valve between the hopper.

5. The blast furnace roof arrangement of claim 4,

a blanking structure corresponding to the position of the upper furnace top sealing cover of the blast furnace body is arranged below the weighing material tank;

the blanking structure comprises the airtight box, a lower sealing valve and a material flow adjusting valve, wherein the lower sealing valve and the material flow adjusting valve are arranged on one side, far away from the blast furnace body, of the airtight box.

6. The blast furnace roof arrangement of claim 5,

the material flow regulating valve is fixed between the lower sealing valve and the weighing material tank in a limiting way.

7. The blast furnace roof arrangement of claim 1,

the first electric hoist and/or the second electric hoist and/or the third electric hoist are also used for being matched with a furnace top uniform pressure discharge system, airtight box cooling water, a nitrogen sealing system, a nitrogen tank and a furnace top stock rod.

8. The blast furnace roof arrangement of claim 2, further comprising a raw gas system;

the crude gas system comprises a delivery pipe, an ascending pipe and a descending pipe;

the inlet of the delivery pipe corresponds to the position of the furnace top sealing cover at the upper part of the blast furnace body, and the outlet of the ascending pipe is connected with the descending pipe.

9. The blast furnace roof arrangement of claim 8,

the outlet of the downcomer extends into the external gravity precipitator.

10. A method of installing and servicing a blast furnace roof installation, characterized by installing and servicing a blast furnace roof installation as claimed in any one of claims 1 to 9; wherein the method comprises the following steps:

a first electric hoist, a second electric hoist and a third electric hoist are arranged on the frame column platform or the main frame;

hoisting the airtight box, the first structural component and the second structural component to a large platform of the furnace top through the first electric hoist;

hoisting a second structural component at the furnace top large platform to the receiving hopper platform through the second electric hoist, and installing or overhauling the second structural component;

and hoisting the first structural component at the large platform of the furnace top to the main belt feeding platform through the third electric hoist, and installing or overhauling the first structural component.

Technical Field

The invention relates to the technical field of blast furnaces, in particular to a blast furnace top device and a mounting and overhauling method of the blast furnace top device.

Background

In recent years, with the rapid development of the iron and steel industry, the requirement of upgrading and reconstructing a blast furnace is higher and higher, but the existing blast furnace is easily influenced by the surrounding building environment, climatic conditions, geographical positions and the like, so that the gold construction period is short, and the blast furnace reconstruction is greatly limited and influenced.

Therefore, a blast furnace top device is needed, which can realize convenient and fast blast furnace top installation or maintenance operation.

Disclosure of Invention

In view of the above problems, the present invention aims to provide a blast furnace top device and an installation and maintenance method thereof, so as to solve the problems of complicated hoisting and maintenance manner, high difficulty, high cost, etc. of the existing blast furnace top.

The invention provides a blast furnace top device, comprising: the blast furnace comprises a blast furnace body, a furnace top feeding complete equipment, a main frame arranged above the blast furnace body, and a furnace top large platform, a receiving hopper platform, a charging bucket platform and a main belt feeding platform which are arranged on the main frame in parallel; a hoisting track is arranged below the charging bucket platform, and a first electric hoist is arranged on the hoisting track; a second electric hoist is fixedly arranged below the main belt feeding platform, and a third electric hoist is arranged above the main belt feeding platform; the first electric hoist is used for hoisting the first structural assembly and the second structural assembly to the large furnace top platform, and the third electric hoist is used for hoisting the first structural assembly at the large furnace top platform to the main belt feeding platform so as to install or overhaul the first structural assembly; the second electric hoist is used for hoisting a second structural component at the large platform of the furnace top to the receiving hopper platform so as to install or overhaul the second structural component; the first electric hoist is also used for hoisting the airtight box to the large platform of the furnace top, and the airtight box is arranged right above the blast furnace body and is connected with the steel ring of the furnace top.

In addition, according to an optional technical scheme, one end of the hoisting track is fixed on the main frame, and the other end of the hoisting track extends to a gravity dust collector frame of an external gravity dust collector; in the horizontal direction, the length of the hoisting track is not less than that of the large platform of the furnace top.

In addition, the optional technical scheme is that the first structural component comprises a main belt pulley and a gas diffusion valve; the main belt head wheel is provided with a main belt for conveying raw materials, and the gas diffusion valve is connected with a crude gas pipeline.

In addition, the optional technical scheme is that the second structural component comprises a pressure equalizing valve and a furnace top equipment structural member; the furnace top equipment structural member comprises a wear-resisting plate of a weighing material tank, a wear-resisting plate of a receiving hopper arranged above the weighing material tank, and an upper sealing valve and a material blocking valve which are arranged between the weighing material tank and the receiving hopper.

In addition, the optional technical scheme is that a blanking structure corresponding to the position of an upper furnace top sealing cover of the blast furnace body is arranged below the weighing charging bucket; the blanking structure comprises an airtight box, a lower sealing valve and a material flow adjusting valve, wherein the lower sealing valve is arranged on one side, far away from the blast furnace body, of the airtight box.

In addition, the optional technical scheme is that the material flow regulating valve is limited and fixed between the lower sealing valve and the weighing charging bucket.

In addition, the optional technical scheme is that the first electric hoist and/or the second electric hoist and/or the third electric hoist are/is also used for being matched with a furnace top uniform pressure discharge system, an airtight box, a nitrogen sealing system, a nitrogen tank and a furnace top measuring rod in hoisting.

In addition, the optional technical scheme is that the system also comprises a crude gas system; the crude gas system comprises a delivery pipe, an ascending pipe and a descending pipe; the inlet of the delivery pipe corresponds to the position of the furnace top sealing cover at the upper part of the blast furnace body, and the outlet of the ascending pipe is connected with the descending pipe.

In addition, the outlet of the downcomer can optionally extend into an external gravity precipitator.

According to another aspect of the present invention, there is provided a method for installing and repairing a blast furnace top assembly, for installing and repairing the blast furnace top assembly; the method comprises the following steps: a first electric hoist, a second electric hoist and a third electric hoist are arranged on the frame column platform or the main frame; hoisting the air tightness, the first structural component and the second structural component to a large platform of the furnace top through a first electric hoist; hoisting a second structural component at the large platform of the furnace top to the receiving hopper platform through a second electric hoist, and installing or overhauling the second structural component; and hoisting part of the first structural components at the large platform of the furnace top to the main belt feeding platform through a third electric hoist, and installing or overhauling the first structural components.

By utilizing the blast furnace top device and the installation and maintenance method thereof, the airtight box, the first structural component and the second structural component can be hoisted to the large platform of the blast furnace top through the first electric hoist, then the second structural component at the large platform of the blast furnace top is hoisted to the receiving hopper platform through the second electric hoist, and the second structural component is installed or maintained, meanwhile, the first structural component at the large platform of the blast furnace top is hoisted to the main belt feeding platform through the third electric hoist, and the first structural component is installed or maintained, the hoisting and maintenance modes of the blast furnace top device are optimized, the hoisting and maintenance modes of the electric hoist are adopted, the construction period can be shortened, the engineering investment is reduced, and the economic benefit of the engineering is improved.

To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.

Drawings

Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description taken in conjunction with the accompanying drawings. In the drawings:

fig. 1 is a schematic structural view of a blast furnace roof apparatus according to an embodiment of the present invention;

fig. 2 is a flow chart of a method of installing and servicing a blast furnace roof installation according to an embodiment of the present invention.

Wherein the reference numerals include: 1. a furnace top large platform; 2. a bucket platform; 3. a receiving hopper platform; 4. a main belt feeding platform; 5. a third electric hoist; 6. a gas bleeding valve; 7. a main belt head pulley; 8. a second electric hoist; 9. a down pipe; 10. hoisting the track; 11. a first electric hoist; 12. a gravity precipitator frame; 13. a gravity dust collector; 14. a blast furnace body.

The same reference numbers in all figures indicate similar or corresponding features or functions.

Detailed Description

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

In order to describe in detail the blast furnace roof apparatus and the installation and maintenance method thereof of the present invention, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 shows a schematic structure of a blast furnace roof apparatus according to an embodiment of the present invention.

As shown in fig. 1, the blast furnace top device of the embodiment of the invention comprises a blast furnace body 14, a top feeding complete set, a main frame arranged above the blast furnace body 14, a top large platform 1, a receiving hopper platform 3, a charging bucket platform 2 and a main belt feeding platform 4 which are arranged on the main frame in parallel; a hoisting track 10 which is horizontally arranged is arranged below the charging bucket platform 2, and a first electric hoist 11 is arranged on the hoisting track 10; a second electric hoist 8 is fixedly arranged below the main belt feeding platform 4, and a third electric hoist 5 is arranged above the main belt feeding platform; the first electric hoist 11 is used for hoisting the airtight box, the first structural component and the second structural component to the large furnace top platform 1, and the airtight box is directly replaced and overhauled at the large furnace top platform 1, wherein the airtight box is arranged right above the blast furnace body 14 and is connected with a steel ring of the furnace top, and the third electric hoist 5 is used for hoisting the first structural component at the large furnace top platform 1 to the main belt feeding platform 4 so as to install or overhaul the first structural component; the second electric hoist 8 is used for hoisting the second structural component of the large platform 1 of the furnace top to the receiving hopper platform 3 so as to install or overhaul the second structural component, and then the hoisting operation of the whole blast furnace top can be realized through the three electric hoists without the operation of a crane, thereby simplifying the hoisting and overhauling processes.

The hoisting track 10 is arranged horizontally, one end of the hoisting track is fixed on the main frame, the other end of the hoisting track extends to a gravity dust collector frame 12 of an external gravity dust collector 13, the length of the hoisting track 10 is not less than that of the large platform 1 of the furnace top in the horizontal direction, and the hoisting operation of each structural component of the furnace top of the blast furnace can be realized through the sliding of the first electric hoist 11 on the hoisting track 10.

In particular, the first structural component may comprise a main belt head pulley 7 and a gas bleeding valve 6, wherein a main belt for conveying raw materials is arranged on the main belt head pulley 7, and the gas bleeding valve 6 is connected with a crude gas pipeline.

In addition, the second structural assembly may include a surge valve and a roof equipment structure; furnace roof equipment structure includes the antifriction plate of weighing the material jar and sets up the antifriction plate of the receiving hopper in weighing the material jar top to and set up at weighing the upper seal valve and the material stop valve between material jar and the receiving hopper, wait that the raw materials that get into in the blast furnace body 14 pass through main belt conveying to in the receiving hopper, and loop through weighing inside structural components such as material jar enter into the blast furnace body 14.

It should be noted that the first structural component and the second structural component may be flexibly adjusted according to the structure or the setting height of the blast furnace top device, and are not limited to the specific structural components, that is, all the structural components of the blast furnace top may be first hoisted to the large platform 1 of the blast furnace top by the first electric hoist 11, and then the structural components at the corresponding height may be hoisted to the corresponding positions by the second electric hoist 8 and the third electric hoist 5, respectively, it is known that the second structural component and the second structural component may be adjusted according to the height and the setting position of the blast furnace top, and all the structural components of the blast furnace top device may be hoisted or overhauled by the mutual cooperation of the first electric hoist 11, the second electric hoist 8 and the third electric hoist 5.

For example, the first electric hoist 11, the second electric hoist 8 and/or the third electric hoist 5 are also used for matching with other blast furnace top devices such as a furnace top uniform pressure discharge system, an airtight box cooling water, a nitrogen sealing system, a nitrogen tank, a furnace top stock rod and the like, and which electric hoist is specifically adopted can be flexibly selected according to the setting position.

Further, besides the first electric hoist 11, corresponding hoisting rails 10 may be arranged at the second electric hoist 8 and the third electric hoist 5, so that the electric hoists can be matched with the corresponding rails to perform flexible hoisting operation, and the hoisting operation can be specifically set according to construction requirements, which is not particularly limited by the invention.

In one embodiment of the invention, a blanking structure corresponding to the position of the upper furnace top sealing cover of the blast furnace body 14 is arranged below the weighing material tank; the blanking structure comprises the airtight box, a lower sealing valve and a material flow adjusting valve, wherein the lower sealing valve and the material flow adjusting valve are arranged on one side, far away from the blast furnace body 14, of the airtight box, the material flow adjusting valve is fixed between the lower sealing valve and the weighing material tank in a limiting mode, and raw materials sequentially pass through a receiving hopper and other furnace top feeding devices to enter the interior of the blast furnace body.

Further, in the blast furnace top apparatus of the present invention, the gravity dust collector 13 is connected to the raw gas pipe; namely, the blast furnace top device can also comprise a crude gas system, and the crude gas system comprises a delivery pipe, an ascending pipe and a descending pipe 9; the inlet of the guide pipe corresponds to the upper furnace top sealing cover of the blast furnace body 14, the outlet of the ascending pipe is connected with the descending pipe 9, the outlet of the descending pipe 9 extends into the external gravity dust collector 13, and the dust removal treatment is carried out on the crude gas generated by the blast furnace through the gravity dust collector 13.

Corresponding to the blast furnace top device, the invention also provides an installation and maintenance method of the blast furnace top device, which is used for installing and maintaining the blast furnace top device.

In particular, fig. 2 shows a flow of a method of installation and service of a blast furnace roof installation according to an embodiment of the invention.

As shown in fig. 2, the method for installing and repairing the blast furnace top device of the embodiment of the present invention mainly includes the following steps;

s110: a first electric hoist, a second electric hoist and a third electric hoist are arranged on the frame column platform or the main frame;

s120: hoisting the airtight box, the first structural component and the second structural component to a large platform of the furnace top through a first electric hoist;

s130: hoisting a second structural component at the large platform of the furnace top to the receiving hopper platform through a second electric hoist, and installing or overhauling the second structural component;

s140: and hoisting the first structural component at the large platform of the furnace top to the main belt feeding platform through a third electric hoist, and installing or overhauling the first structural component.

According to the blast furnace top device and the installation and maintenance method thereof provided by the invention, a large furnace top crane and a platform are omitted, the structural member of the blast furnace top device can be hoisted or maintained through the mutual matching of the first electric hoist, the second electric hoist and the third electric hoist, the complex hoisting equipment is not needed, the hoisting and maintenance of the blast furnace top device can be optimized, in addition, the hoisting and maintenance mode of the electric hoists is adopted, the cost can be saved, the construction period can be shortened, and the economic benefit of the engineering can be improved.

The blast furnace roof installation and the method of installing and servicing thereof according to the present invention are described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the blast furnace roof apparatus and method of installing and servicing the same set forth above without departing from the scope of the invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.