KR20160022941A - Blast furnace repair method - Google Patents

Abstract

A method for repairing a blast furnace having a furnace body and a furnace body installed on a base of a furnace, comprising the steps of: operating a furnace (S1) to heat a new furnace body and a new furnace body (S6), and a base dividing step (S3) for dividing the foundation foundation into upper and lower bases by cutting the foundation foundation up and down to load the spheroid element and the spheroid element pillars, (S5) of pulling out a base upper part integrally with the spherical body and the spheroidal body post (S5), a new base body introduction step (S6) of introducing the new base integrally with the new noelic column and the new noel body on the base lower part, .

Description

{BLAST FURNACE REPAIR METHOD}

The present invention relates to a method for repairing a blast furnace, and more particularly, to a method for repairing a blast furnace capable of demolishing a pillar of a pillar-shaped body and a pillar-shaped body and constructing the pillar-shaped body into a new pillar body and a new pillar body in a short period of time.

In the blast furnace blast furnace, it is necessary to update the number, that is, the nose body every decade.

The renewal of Nogeco is carried out by removing the old noggin built on the foundation of the blast furnace installation site and constructing a new nogoze on the same basis.

There is a problem in that when the old body is disassembled on the basis of the renewal of the old body, and then the new body is constructed, a long period of stopping the blowing of the blast furnace becomes longer, resulting in a large amount of economic loss per day.

To solve this problem, a method of repairing a brick body by a so-called ring block method in which a ring body is cut as a ring block and the ring block is taken out from the foundation and another ring block is assembled in a separate site is carried on a foundation.

Among them, a large block method in which the ring block is enlarged and the blast furnace is divided into four large ring blocks has been developed (see Patent Document 1).

In the method of Patent Document 1, the ring block of the demagnetized body and the neon furnace body carried in are successively hooked to jacks provided on the column of the blast furnace, and are taken out laterally from the block on the floor side of the furnace and demolished.

However, since the weight of the hearth residue after cooling and fixing after the stop of blowing is increased, the total weight of the furnace bottom portion of the old furnace body may reach 8000 tons, for example, and it is difficult to raise it.

A method for dismantling a bottom of a furnace with a large-sized bottom portion of the furnace is disclosed in which the bottom of the furnace is removed without lifting the bottom portion (see Patent Document 2).

In the method of Patent Document 2, the bases are divided into a plurality of long sections extending in the pull-out direction, the bases are sequentially cut horizontally into the sections, the sliding plates and the fillers are rewound, Slide on the plate and pull out only in the horizontal direction. According to this method, it is possible to demolish and carry in a ring block even for a large furnace bottom portion having a weight exceeding 8000 tons. With these technologies, the repair work time of the blast furnace is being shortened.

However, as a technique prior to the above-described large-block method, a technique has been proposed in which the blast furnace bodies are collectively demolished and a new furnace constructed in a separate place is brought on a foundation and installed.

However, in the technique of Patent Document 3, the furnace bodies are collectively handled. However, as clearly shown in the drawings, the furnace body pillars remain as they are, and there is no description about the disassembly or construction of the furnace body pillars.

This is because the correspondence to the lifetime of the furnace body (refractory or the like) is important at the technical level of the method of repairing the blast furnace at that time, and since the degree of consideration for the expansion of the contents of the hearth was considerable, It is only necessary to dismantle and rebuild the main body, thereby disassembling and rebuilding the main body column supporting the main body is not required, and the main body column is usually used from the viewpoint of construction time and economy.

Further, as a method of constructing a high-rise structure of a plant facility, a technique of bringing the apparatus main body and furniture around the apparatus main body onto a foundation is proposed (refer to Patent Document 4).

In this technique, the lower part of the device is separated and the lower part of the lower device, the device body and the furniture are shortened and transported. Then, the apparatus main body is completed including the apparatus main body and the furniture which are shortened, and the lower apparatus which is mounted on the base and extended and extended and transported separately. Therefore, the technique of Patent Document 4 is similar to the large block method in the blast furnace. However, as described in Patent Document 4, the technology assumes transportation by a ship or a vehicle, and does not assume a huge structure such as a blast furnace. In Patent Document 4, there is a description on the installation using special folding furniture, but there is no description about demolition of the old structure.

Japanese Patent Laid-Open No. 2006-283183 Japanese Patent No. 4300249 Japanese Patent Laid-Open No. 52-13406 Japanese Patent Application Laid-Open No. 58-106036

As described above, prolonging the blasting stop period of the blast furnace causes a large amount of economic loss. Therefore, in order to suppress this as much as possible, shortening of the construction period is further demanded.

However, in the large block method such as the patent document 1 or the patent document 2 described above, it is necessary to demolish and bring in each ring block, and it is also necessary to carry out work for hooking the column to the column at every demolition and carry- It is difficult to shorten.

In the large-block method such as the above-described Patent Document 1 or Patent Document 2, since each ring block hangs on the column body, the column body is required at the time of demolishing and loading the column body, and it is necessary to dismantle or rebuild it separately from the body There is a problem in reducing the construction period.

Alternatively, it may be considered that the non-body column of the old body is used as it is for the new body. In this case, however, there is a problem that expansion of the contents of the new body is limited in order to avoid interference with the column.

Here, in the above-described Patent Document 3, the yoke bodies are collectively replaced and the hanging work on the yoke post in the ring block method including the large block method can be solved. However, Patent Document 3 does not update the columnar column, and can not be applied to the update of the columnar column due to expansion of the volume of the columnar body.

In addition, in the above-described Patent Document 4, since the proposed apparatus is small enough to be carried by a ship or a vehicle, it can not be applied to renewal of the blast furnace as it is, and work is required for the expansion and contraction of furniture, It is not suitable for shortening the repair work period.

As described above, in the large-block method such as the patent document 1 or the patent document 2 described above, it is difficult to shorten a new construction period, and in reference to the prior arts 3 and 4, It was difficult to demolish the pillar of the pillar body and to construct the pillar body of the new pillar body and the pillar of the new pillar body in a short period of time.

It is an object of the present invention to provide a method of repairing a blast furnace capable of demolishing a bulb former and a bulb former and constructing a new bulb bulb and a new bulb bulb in a short period of time.

The present invention relates to a method of repairing a blast furnace having a furnace body and a furnace pillar installed on a foundational base, and in a state in which the blast furnace is in operation, a new foundation is established in a new furnace building place different from the above- A new furnace body building step of constructing a new furnace body and a new furnace body on the new base; and a basic finishing step of dividing the foundations of the furnace body up and down to divide the furnace body and the former furnace body A step of withdrawing the base from the base bottom lower portion and withdrawing the base top integrally with the spheroidal body and the spheroidal body column after stopping blowing the blast furnace; And a process of introducing a new nominal body integrally with the new nominal body is carried out.

According to the present invention, in the new furnace body building step, the new furnace body and the new furnace body are constructed on a new basis at the new furnace body construction site different from the installation location of the old furnace as it is in the operating state. After the old blast furnace is stopped from blowing, the old old furnace body and the old furnace body are removed from the on-site foundation by performing the furnace body withdrawing process and the new furnace body introducing process, and the new furnace body and the new furnace body can be collectively replaced . The removed old and new old columns can be further dismantled in the state where the new column is restarted at the old old column dismantling site.

Therefore, in the present invention, the repair work period of the blast furnace can be shortened to about 50 to 70 days.

It took about 120 to 150 days, depending on the volume of the sieve, in the conventional method of performing all the work from the disassembly of the old sieve to the construction of the new sieve on the same basis.

Also, in the large block method or the ring block method described above, the manufacture and disassembly of individual ring blocks can be carried out at a place different from that of the base. However, ring block division, hanging, It is necessary to carry out block taking-in, hanging-up, and connection on the basis of the construction. In this case, a repair work period of about 80 to 120 days was required.

As described above, in the present invention, since the main operation on the foundation of the blast furnace installation site is limited to the old furnace body drawing process and the new furnace body introduction process, the repair work period of the blast furnace can be drastically shortened.

Further, in the present invention, by disposing the furnace body together with the furnace body pillar integrally, it is possible to dismantle the furnace furnace body and build up the new furnace body, and the construction period can be shortened in this respect as well.

In addition, because of the batch replacement of the column to the column, the equipment (various equipment, piping, etc.) installed between the column and the column can be taken out to the outside of the foundation. In addition, the equipment installed between the new nose body and the new nose body can be preliminarily assembled in the new nose body building step, and introduced in a batch manner. Even in this respect, the repair work period can be shortened.

In addition to these, in the present invention as a major feature of the present invention, at the same time of replacing the old nosepiece with the new nosepiece, since the old pillar body can be replaced with the new pillar body, It is not limited by the dimensions of the column. In other words, even a large new noble body such as one that does not get rid of the old noble column can be coped with by constructing a new noble column suitable for these, and the degree of freedom can be dramatically improved even in expansion of the furnace contents.

In addition, since the new nominal body conveyed in the new non-body introduction step can be supported on the new nominal column and can be conveyed integrally in a stable state, this process can be carried out safely.

In the present invention, it is preferable that the recovery base is formed on the upper surface of the foundation bottom in the new-no-body introduction step, and the new base is introduced into the upper surface of the recovery base integrally with the new-

According to the present invention, even if the upper surface of the foundation bottom is largely irregular and is rough, it can be covered with the restoration foundation by cutting at the foundation dividing step or by the work in the step of pulling out the globe body. It can be reconstructed as. Therefore, when a sliding structure or the like of the transfer device for introduction is provided on the upper surface of the restoration foundation, it is possible to introduce a new high-density stable body.

In the present invention, in the step of constructing the new furnace body, the introduction conveying device that extends linearly from the new furnace body building site to the site foundation is used, and in the former furnace body withdrawing step, the new furnace body building step is performed from the site foundation Wherein the introduction conveying device and the withdrawing conveying device each have a solid lubricating low friction lining between a pair of sliding plates, It is preferable to have a used sliding structure.

In the present invention, after the new furnace (new furnace body and new furnace body) is built on a new basis in the new furnace body building process, these new furnace, new furnace body and new furnace body are transported on a spot basis in the furnace furnace introduction process. At this time, by linearly moving the introduction conveying device, it is possible to perform conveyance with a minimum of driving without any directional change, and the possibility of occurrence of deformation or the like on the new nose body and the new nose body on the new foundation can be reduced, .

Further, the former draw-out apparatus can partly share, for example, a portion from the site foundation to the direction changing position with the above-mentioned introduction conveying apparatus, and can effectively use the ground maintained or reinforced as the introduction conveying apparatus . That is, since the load is applied to the huge new nozomes and the new nozom columns, the ground on which the introducing transport device is installed is sufficiently reinforced. Also in the drawing conveying apparatus, the ground is reinforced because it receives a large load of the columnar body and the columnar body. By partially sharing this with the introduction conveying apparatus, the work and cost of the ground reinforcement as a whole can be reduced.

However, the present invention is not limited to the use of a part of the conveying path between the drawing conveying apparatus and the introducing conveying apparatus. The present invention may be a configuration in which the drawing conveying device and the introduction conveying device are independent from each other.

Further, since the drawing conveying device is diverted and extended in the cross direction in the middle of the introducing conveying device, the place where the old furnace body is disassembled can be made different from the place where the new furnace body is constructed, and interference of the working place can be avoided.

In addition, since the former and the latter columns are disassembled after being drawn out, there is no problem even if deformation or the like occurs, and there is no problem even if the direction changing is performed in the drawing conveying apparatus. In consideration of such circumstances, in the present invention, it is most preferable to rectify the introduction conveying apparatus and change the direction of the withdrawing conveying apparatus in the cross direction.

However, the present invention is not limited to the case where the lead-in conveying apparatus linearly changes direction in the crossing direction on the way of the lead-out conveying apparatus. The present invention may be a configuration in which the drawing conveying device linearly changes the direction of the introduction conveying device in the cross direction on the way.

In the present invention, the drawing conveying apparatus and the introducing conveying apparatus may be configured so as to perform direction conversion, respectively. For example, a configuration may be adopted in which the introduction conveying apparatus performs a direction change in the cross direction in the middle of the conveyance path, and the draw-out conveyance apparatus performs the direction change from the middle of the introduction conveyance apparatus in the cross direction. For example, the common portion of the conveyance path is extended from the blast furnace installation place, and the introduction conveying device extends from the end portion toward the new nose body building place in the cross direction, and from the end portion toward the opposite side It is also possible to use a configuration in which the withdrawal transfer device is extended.

In the present invention, the drawing conveying apparatus and the introduction conveying apparatus may be linearly arranged. In this case, the drawing conveying device and the introduction conveying device need to be independent from each other. For example, the drawing conveying device is linearly extended to one side of the field foundation, and the introduction conveying device is extended in the other direction Configuration can be used. At this time, the angle formed by the drawing conveying device and the introduction conveying device is not limited to 180 degrees (extending in the same line as each other) or 90 degrees, but may be an angle of 45 degrees or 60 degrees. This is because, in the present invention, there is no restriction on the angle at which the columnar body can be passed because the columnar body is also conveyed integrally.

According to the present invention, the sliding of the sliding plates between the pair of sliding plates for sliding the new bases, the new main bodies and the new non-body columns in the new no-body introduction step by sliding the sliding plates together .

In other words, when a mechanical structure such as a wheel or a mountain wheel is used, when a large load due to a huge new no-body or a new nose pillar is applied, the portion subjected to concentrated load of the mechanical structure is deformed or broken, It may be canceled. However, in the transportation using such a pair of sliding plates, it is possible to distribute a large load on a wide sliding surface, and since the sliding surfaces are continuous, local deformation hardly occurs, It can be returned.

Further, by providing a solid lubricating low-friction lining between the pair of sliding plates, the mutual frictional properties can be further reduced, smooth and high-density transportation can be carried out, and even if a new built- .

Further, it is preferable to refer to the above-described Patent Document 2 for a slide plate type sliding structure which slides a pair of sliding plates against each other and a large body load carrying body using the same. As the low-friction lining of the solid lubricant type, it is preferable that a solid lubricant such as tetrafluoroethylene resin (PTFE), molybdenum disulfide, graphite or the like is solid-lubricated on the surface of the substrate.

These sliding structures are not limited to the introduction conveying apparatus used in the new nonoccurrence introducing step, but may be used for the withdrawal conveying apparatus used in the old nostril extracting step.

In the present invention, the following structures are provided as concrete structures of the introduction conveying apparatus and the draw-out conveying apparatus described above to secure a sliding structure along the conveying path and carry out a conveying operation using them.

First, in the present invention, the drawing conveying apparatus includes a first moving path extending from a site foundation to a place where the new furnace body building step is performed, and a second moving path extending from the middle of the first moving path to a cross- A second movement path for moving the first movement path, a second movement path for moving the second movement path, and a second movement path formed in the ground along the second movement path, Wherein the first movement path includes a sliding structure continuous from an upper surface of the drawing base to an upper surface of the lower portion of the foundation and a height of the sliding surface being set to a level L1; A sliding structure in which the height of the sliding surface is set to the level L2, and a sliding structure formed on the upper surface of the branch moving platform, Wherein the sliding surface has a sliding structure whose height is set to the level L2 and the second moving path is formed between the lower surface of the branching traveling platform and the bottom surface of the concave portion and the height of the sliding surface is set to the level L3 Wherein said introducing transport device comprises a third movement route extending from said new foundation toward said field foundation, an introduction carriage capable of moving said third movement route and supporting said new foundation, Wherein the third movement path is formed between the lower surface of the introduction base and the ground and is continuous to the vicinity of the lower portion of the foundation via the upper surface of the support member, A sliding structure in which the height of the sliding surface is set to the level L2; And a height of the sliding surface is set to the level L4; and a sliding structure which is formed between the upper surface of the restoration foundation and the lower surface of the new foundation, and the height of the sliding surface is set to the level L4 And the height of the sliding surface of the sliding structure can be set to the level L4> the level L1> the level L2> the level L3.

According to the present invention, the drawing of the spherical body or the base from the base of the field is performed in the sliding structure of the level L1, and until the subsequent direction change is carried out by using the drawing base by the sliding structure of the level L2, So that the carriage can be used for long distance travel, and smooth and stable transportation can be performed. Further, in order to move the branch traveling platform to the sliding structure of the level L3 lower than the level L2, the balloon body or the base upper portion can be loaded on the top surface of the branch transfer base for each drawing base,

Further, in the introduction of the new furnace and the new foundation, smooth and stable transportation can be performed by using the introduction platform which slides at the same level L2 as the movement of the drawing base, and reinforcement of the ground can be shared . Further, by using the sliding structure of level L4 higher than the level L1 for introducing the new furnace and the new foundation from the mounting table, it is possible to introduce the restoration foundation to the upper surface.

Secondly, in the present invention, the drawing conveying apparatus includes a first moving path extending from the site foundation to a place where the new furnace body building step is performed, and a second moving path extending from the middle of the first moving path in the cross direction 2 moving path and a drawing table movable from the first moving path to the second moving path, the first moving path continuing from the top surface of the drawing base to the top surface of the bottom of the base, And a sliding structure in which a height of the sliding surface is set to a level L2, and the second moving path is formed between the lower surface of the drawing base and the ground, Is formed between the lower surface and the ground and continues in the direction intersecting with the sliding structure of the level 2 of the first movement path, And a height of the riding surface is set to the level L2, and the introducing carrying device has a third moving path extending from the new foundation toward the field foundation, and a third moving path extending from the new foundation toward the field foundation, Wherein the third movement path is formed between the lower surface of the introduction table and the ground and is continuous to the vicinity of the lower surface of the foundation and the height of the sliding surface is set to the level L2, A sliding structure formed between the upper surface of the introduction base and the lower surface of the new foundation and the height of the sliding surface being set to the level L4; and a sliding structure formed between the upper surface of the restoration foundation and the lower surface of the new foundation, The height of the surface of the sliding structure is set to the level L4, Bell L4> Level L1> Level L2.

In the present invention, the effect described in the preceding paragraph can be obtained basically, and it is possible to carry out drawing of the bulbous element or the upper base by using only the drawing base that slides in the sliding structure of the level L2, Can be omitted.

Thirdly, in the present invention, the drawing conveying apparatus may include a first moving path extending from the site foundation to a place where the new furnace body building step is performed, and a second moving path extending from the middle of the first moving path in the cross direction A branching platform installed on the ground in accordance with the second movement route; a branching platform capable of moving along the branching platform; and a branching platform connected to the site foundation and the branching platform along the first movement route. Wherein the first movement path has a sliding structure in which the upper surface of the intermediate transfer base extends from the upper surface of the branch transfer base to the upper surface of the lower base and the height of the sliding surface is set to the level L1, The second movement path is formed between the lower surface of the branch transfer platform and the upper surface of the branch base, And the height of the dinging surface is set to the level L3 ', and the introduction transporting device has a third movement path extending from the new foundation toward the site foundation, a building platform supporting the new foundation, The third movement path is formed between the lower surface of the new foundation and the upper surface of the building platform, and the upper surface of the auxiliary platform And the height of the sliding surface is set to the level L4, and the height of the sliding surface of the sliding structure can be set to the level L4> the level L1> the level L3 '.

According to the present invention, at the time of drawing, the balloon body or the base upper part is directly moved from the sliding mechanism of the level L1 to the position where the balloon is directly diverted, so that the drawing base can be omitted. In the direction conversion, since the branch moving platform using the sliding structure of the level L3 'lower than the level L1 is used, it is possible to load the spherical core or the base upper portion on the upper surface of the branch moving platform and smoothly change the direction. On the other hand, at the time of introduction, the new no-body or the new base can be adjusted to slide in the sliding structure of the level L4 and can be introduced intact to the site foundation. At this time, by using the sliding structure of the level L4 higher than the level L1 for introducing the new furnace and the new foundation, it is possible to introduce the restoration foundation to the upper surface.

In the present invention, it is preferable that the introduction conveying device has a guide groove continuing in the carrying direction to the fixed side, and a guide block coupled to the guide groove on the moving side, It is preferable that it is installed in a place.

In the present invention, the moving side of the introduction conveying apparatus tries to move outside the predetermined conveying direction for some reason by the combination of the guide groove and the guide block, and the vertical load applied to the moving side is the large weight of the entire blast furnace, It is not possible to overcome the stepped portion of the guide groove and to come out. Therefore, the guide block is held in the guide groove to continue the guide, and the moving side can be moved only in a predetermined carrying direction. Thus, it is possible to secure the stability and high density of transportation.

In the present invention, it is preferable that the introducing transport device has a precision of 3 mm or less in horizontal error per 1 m travel.

According to the present invention, the conveyance of the new bases, the new neocons and the new neocons pillars in the above-mentioned new noche body introduction step is high in stability at a high density and can sufficiently suppress the deformation of the new bases and the new noche column, Thereby enabling safe transportation.

According to the present invention, the work on the foundation can be limited to the process of drawing the old furnace body and introducing the new furnace body, so that the repair work period of the furnace can be limited to the construction period of the furnace body drawing process and the new furnace body introduction process. Can be greatly shortened.

Therefore, according to the present invention, it is possible to provide a method of repairing a blast furnace capable of demolishing old old furnace / old old furnace columns and constructing new furnace / new furnace columns in a short period of time.

1 is a flowchart showing an outline of a blast furnace repairing process according to a first embodiment of the present invention.
Fig. 2 is a plan view showing the arrangement of working places used for the number of the first embodiment. Fig.
Fig. 3 is a plan view showing a spherical body withdrawing step of the first embodiment. Fig.
Fig. 4 is a plan view showing the new nozomer introduction step of the first embodiment. Fig.
Fig. 5 is an elevation view showing the cutting of the base dividing step of the first embodiment. Fig.
6 is an enlarged elevational view showing a cutting operation of the base dividing step of the first embodiment.
7 is an enlarged perspective view showing a cutting operation of the base dividing step of the first embodiment.
Fig. 8 is an elevational view showing a transporting apparatus used in the globular body drawing process of the first embodiment. Fig.
Fig. 9 is a plan view showing a sliding structure of a level L1 used in the step of drawing the spheroidal body according to the first embodiment. Fig.
10 is a plan view showing a sliding structure of a level L2 used in the process of drawing the spheroidal body according to the first embodiment.
11 is a plan view showing a sliding structure of a level L3 used in the process of drawing the spheroidal body according to the first embodiment.
Fig. 12 is an enlarged perspective view showing a main part of a transporting apparatus used in the globular body withdrawing step of the first embodiment. Fig.
13 is a cross-sectional view showing a main part of a transfer device used in the process of drawing the spheroidal body according to the first embodiment.
Fig. 14 is an enlarged cross-sectional view showing a main part of a transporting apparatus used in the globular body withdrawing step of the first embodiment. Fig.
Fig. 15 is a plan view showing a main part of a transfer device used in the spheroidal substance withdrawing step of the first embodiment. Fig.
Fig. 16 is an elevational view showing a first conveying operation of the guiding body withdrawing step of the first embodiment; Fig.
Fig. 17 is an elevational view showing a second conveying operation of the drawer-body drawing process of the first embodiment; Fig.
18 is an elevation view showing a traction device used in the transport apparatus of the first embodiment.
19 is a plan view showing a traction device used in the transport apparatus of the first embodiment.
20 is an elevation view showing a preparation step of the new nozomer introduction step according to the first embodiment.
Fig. 21 is an elevational view showing a transporting apparatus used in the new nozomes introduction step of the first embodiment. Fig.
22 is an enlarged perspective view showing a main part of a transfer device used in the new nozomer introduction step of the first embodiment.
23 is an elevation view showing a first transport operation in the new nozomes introduction step of the first embodiment.
24 is an elevation view showing a second transport operation of the new nozomer introduction step of the first embodiment.
25 is an elevational view showing a carrying apparatus used in the process of drawing the spheroidal body according to the second embodiment of the present invention.
Fig. 26 is a plan view showing a transporting apparatus used in the globular body withdrawing step of the second embodiment. Fig.
Fig. 27 is an elevational view showing a transporting apparatus used in a globular body drawing process according to the third embodiment of the present invention. Fig.
Fig. 28 is a plan view showing a sliding structure of a level L1 used in the process of drawing the spheroidal body according to the third embodiment. Fig.
29 is a plan view showing a sliding structure of a level L3 'used in the drawing process of the spheroidal body according to the third embodiment.
30 is an elevation view showing a transporting apparatus used in the new nozomes introduction step of the third embodiment.
Fig. 31 is a plan view showing a sliding structure of level L4 used in the new nozomer introduction step of the third embodiment. Fig.
32 is a plan view showing a spherical body withdrawing step according to the fourth embodiment of the present invention.
33 is a plan view showing the step of introducing a new nozomer in the fourth embodiment.
Fig. 34 is a plan view showing a spherical body withdrawing step according to the fifth embodiment of the present invention. Fig.
Fig. 35 is a plan view showing a new nozomer introduction step according to the fifth embodiment. Fig.
Fig. 36 is a plan view showing a spherical body withdrawing step according to the sixth embodiment of the present invention.
37 is a plan view showing the step of introducing a new nozomer in the sixth embodiment.
Fig. 38 is a plan view showing the spherical body withdrawing step of the seventh embodiment of the present invention. Fig.
39 is a plan view showing the step of introducing a new nozomer in the seventh embodiment.
Fig. 40 is a cross-sectional view showing an introduction transporting apparatus usable in the fourth embodiment and the fifth embodiment. Fig.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]

1 to Fig. 4 show the outline of the number of blast furnace processes (Fig. 1) executed in the present embodiment, the plane arrangement of the work place used in the number (Fig. 2) The introduction process (Fig. 4) is shown.

In Fig. 2, the blast furnace (old blast furnace 10) to be repaired in this embodiment is provided in the blast furnace installation place P1. In the blast furnace installation place P1, a spherical body 11 and a spherical body pillar 12 are built on the foundation foundation 13. [ The field foundation 13 has a flat rectangular shape, and a new nose body construction place P2 is set on an axis A1 orthogonal to the midpoint of the one side.

The new furnace body construction place P2 is provided with a new furnace body 21 and a new furnace body 22 on the upper surface of the new furnace 23 in the new furnace body building step S2 (20) is constructed. On the axis A2 extending in the direction orthogonal to the axial position A1 from the intermediate position, the bulb disassembling place P3 is set on the axis A1 connecting the new bulb former construction place P2 and the blast furnace installation place P1.

In the present embodiment, as shown in Fig. 1, in a state where the operation (primary bladder operation S1) in the old blast furnace 10 installed in the blast furnace installation place P1 continues, The new furnace body building step S2 is started and the new furnace body 21 and the new furnace body pillar 22 to be the new furnace 20 are constructed on the new foundation 23. [

Further, in the present embodiment, the furnace contents of the new furnace body 21 are enlarged larger than those of the furnace body 11. Therefore, the span of the new non-body span 22 is larger than the span of the old non-body span 12.

In the new furnace body building step S2, the new furnace 20 on the new foundation 23 is provided with the control equipment, wiring pipes, etc. in addition to the new furnace body 21 and the new furnace body 22, Is installed. By improving the design ratio in this process, work required for preparation of the new furnace body introduction step (S6) to the new furnace operation (S7) performed in the blast furnace installation place (P1) can be reduced, and the construction period can be shortened.

On the other hand, in the blast furnace installation place P1, the foundation foundation 13 of the running furnace 10 during operation is kept in contact with the base foundation 14 and the base foundation 15 (see Fig. 5) (S3) is carried out.

If it is possible to carry out the basic division, the blowing stop S4 is carried out in the bulb 10 and then the bulb withdrawal step S5 is carried out to form the bulb 11 including the bulb 11 and the bulb 12 The base portion 14 on which the blast furnace 10 is loaded is transported to the bulb disassembled place P3.

As shown in Fig. 3, the base upper portion 14 on which the old bulb 10 is mounted is drawn out in the direction of the axis A1 and moved along the axis A2 by changing the direction And returns it to the old non-body dismantling place (P3). In the meantime, the new furnace body building step S2 continues.

The new furnace body introducing step S6 is carried out subsequent to the old furnace body withdrawing step S5 and the new foundation 23 loaded with the new furnace 20 in the new furnace body building step S2 is moved in the direction of the axis A1 So that the foundation upper part 14 and the guide blast furnace 10 are introduced on the foundation bottom 15 which has been demolished.

When the new furnace 20 is introduced onto the foundation bottom 15, the new furnace body 21 and the new noble body column 22 are connected to each other to connect the piping wiring and complete the new furnace 20. Then, ignition of the blast furnace is carried out to start operation of the new furnace (S7) by the new furnace 20.

The base upper portion 14 and the bulb 10 drawn out in the bulb-like body withdrawing step S5 are subjected to a bulb-bulb disassembling step (S8) at the bulb-bulb-bulb disassembling place P3 and sequentially disassembled. At this time, the new furnace operation (S7) is separately disclosed in the furnace installation place (P1), and the old furnace body decomposition step (S8) can be carried out independently of the operation of the blast furnace. have.

Hereinafter, the base dividing step (S3), the spheroid element drawing step (S5), and the new nozomer introduction step (S6) in the present embodiment will be described in detail.

[Base dividing step (S3)]

Fig. 5 to Fig. 8 show details of the base dividing step (S3) in the present embodiment.

5, the site foundation 13 provided in the blast furnace installation place P1 is horizontally cut to the level L1 and divided into the foundation upper portion 14 and the foundation lower portion 15 do.

On the spot foundation 13, there is constructed a bulb 10 (having a bulbous bulb 11 and a bulbous bulb 12), and the divided bulbous upper 14 has a bulb 10 And the base bottom portion 15 remains fixed to the blast furnace installation place P1.

The cutting in the basic dividing step S3 is performed by setting a plurality of rectangular cutting sections along the above-mentioned axis A1 in the planar shape of the on-site foundation 13, And the order described in Patent Document 2 described above can be used.

As shown in Fig. 6, each of the boundaries B1, B2, T3, ... for each of the cut sections T1, T2, T3 ... of the side surface 13 of the field foundation 13 (side surface on the side opposite to the new- ... are drilled to form a through hole 91 through the site foundation 13 in the direction of the axis A1. A guide member 92 such as H-shaped steel is provided in the through hole 91, and the wire saw 93 is held at the height of the upper flange and the lower flange.

The wire saw 93 is attached to the through holes 91 at the positions of the boundaries B1 and B2 by circulating the through holes 91 so that the material of the cutting segment T2 sandwiched by the boundaries B1 and B2 13) can be horizontally cut.

This horizontal cutting is performed at the upper and lower positions inside the through hole 91 so that the field foundation 13 is divided into the foundation upper portion 14 and the foundation lower portion 15 in this cutting section T2. Between the base portion 14 and the base portion 15, a cavity 94 is formed on the traces of the cut material having a predetermined thickness.

Even when the cavity 94 is formed in the cutting section T2, since the adjacent cutting sections T1 and T3 are not cut, the base section 14 is kept at a predetermined interval with respect to the base section 15.

7, the fixed side sliding plate 81, the moving side sliding plate 82, and the high-pack anchor 95 are provided in the cavity 94 if the cavity 94 can be formed.

The fixed side sliding plate 81 is laid on the bottom surface of the cavity 94, that is, the upper surface of the base bottom 15. The fixed side sliding plate 81 is made of a stainless alloy or the like having a low friction coefficient.

The moving side sliding plate 82 is provided on the upper surface of the fixed side sliding plate 81. The moving side sliding plate 82 is covered with a low friction lining 83 including a solid lubricant on its surface facing the fixed side sliding plate 81.

As the low-friction lining 83, a solid lubricant such as polytetrafluoroethylene (PTFE), molybdenum disulfide, or graphite may be fixed on the surface of the substrate.

Among them, the polytetrafluoroethylene resin is firmly fixed on the surface of the metal plate with an epoxy resin, a polyimide resin or the like (coefficient of friction (μ) = about 0.06). For example, "Nippon Pillar Packing Co., Ltd. Quot; PILLAR FLUOROGOLD PILLAR No.4801 "

The high-pack anchor 95 is a rigid flexible body having a length equivalent to the moving-side sliding plate 82 and is made of aramid resin fibers and is disposed on the upper surface of the moving-side sliding plate 82. Then, by filling the interior with grout such as cement slurry, the top surface of the high-pack anchor 95 comes into a state of being in pressure contact with the ceiling surface of the cavity 94, that is, the bottom surface of the base top 14. [

In this state, the grout is fixed so that the base portion 14 is supported by the high-pack anchor 95, that is, the load of the base portion 14 is transmitted to the high-pile anchor 95, the moving-side sliding plate 82, (15) by way of the base (81).

6, when the base portion 14 is supported by the base bottom portion 15 via the high-plastic anchor 95 or the like in the cutting section T2, Cutting is performed.

In the basic dividing step (S3), the above-mentioned operations are sequentially performed in the respective cutting sections, so that finally all of the cutting sections, that is, the field foundations 13, are divided into the base portion 14 and the base portion 15 .

The moving side sliding plate 82 and the stationary side sliding plate 81 provided between the base upper portion 14 and the base bottom portion 15 constitute a part of the carrying apparatus used in the guiding body withdrawing step S5 .

[Draw-out conveying device 30 used in the old original body withdrawing step (S5)]

In the base dividing step (S3), the drawing conveying device (30) used in the subsequent sphere drawing-out step (S5) is also installed.

8, the drawing-out conveying apparatus 30 is moved from the vicinity of the site foundation 13 to the axis A1 (see Fig. 3) in order to execute the drawing operation (see Fig. 3) And a branching movement platform 32 movable along the axis A2 from the middle of the movement path of the drawing platform 31 (see Fig. 3).

The drawing base 31 is a flat base formed by a steel structure or the like, and a sliding structure 42 is provided between the bottom surface and the ground. The upper surface of the drawing base 31 is set at the same height as the upper surface of the foundation lower portion 15 and a sliding structure 41 continuous from the upper surface of the drawing base 31 to the upper surface of the foundation lower portion 15 is provided have. The height of the sliding surface of the sliding structure 41 is set to the level L1 and the height of the sliding surface of the sliding structure 42 is set to the level L2.

The branch transfer platform 32 is a flat platform formed by steel frame construction or the like and is provided in the recess 33 in the direction of the axis A2 formed on the ground. One end of the concave portion 33 is disposed in a path connecting the blast furnace installation place P1 and the new furnace body building place P2 and the other end is disposed in the old furnace body dismantling place P3.

A sliding structure 43 is provided between the bottom surface of the concave portion 33 and the lower surface of the branching traveling platform 32. The height of the sliding surface of the sliding structure 43 is set to the level L3.

The upper surface of the branch transfer platform 32 is set at the same height as the ground. Most of the above-described sliding structure 42 is provided on the ground, but a part of the sliding structure 42 is provided on the upper surface of the branch transfer platform 32.

9, the sliding structure 41 provided on the upper surface of the drawing base 31 includes the fixed side sliding plate 81 described in FIG. 7, the moving side sliding plate 82 covered with the low friction lining 83, .

The fixed side sliding plate 81 of the sliding structure 41 is continuously provided from the upper surface of the base bottom 15 to the upper surface of the drawing base 31. [ The moving side sliding plate 82 of the sliding structure 41 is provided on the lower surface of the base upper portion 14 and slides with respect to the fixed side sliding plate 81 of the sliding structure 41.

With this sliding structure 41, the base portion 14 can be horizontally drawn out along the sliding surface of the level L1 and stacked on the top surface of the drawing base 31. [

10 and 12, the sliding structure 42 in which the drawing base 31 (see Fig. 8) slides is similar to the above-described sliding structure 41, and the fixed side sliding plate 81 Side sliding plate 82 covered with a low-friction lining 83, as shown in Fig.

The fixed side sliding plate 81 of the sliding structure 42 is continuously installed from the vicinity of the base bottom 15 to the upper surface of the branch transfer platform 32. The moving side sliding plate 82 of the sliding structure 42 is provided on the lower surface of the drawing base 31 and slides with respect to the fixed side sliding plate 81 of the sliding structure 42.

With this sliding structure 42, the drawing base 31 on which the base portion 14 is loaded can be horizontally drawn out along the sliding surface of the level L2 and can be loaded on the top surface of the branch moving base 32. [

11 and 12, the sliding structure 43 to which the branching mobile unit 32 slides includes the fixed-side sliding plate 81 described with reference to Fig. 7 and the low-friction lining (not shown) similar to the above- Side sliding plate 82 that is covered with the sliding-side sliding plate 83.

The fixed side sliding plate 81 of the sliding structure 43 is continuously provided from one end of the recess 33 to the other end. The moving side sliding plate 82 of the sliding structure 43 is provided on the lower surface of the branch transfer platform 32 and slides with respect to the fixed side sliding plate 81 of the sliding structure 43.

With this sliding structure 43, the branch transport platform 32 on which the foundation upper portion 14 and the drawing base 31 are loaded is horizontally drawn out along the sliding surface of the level L2, Can be returned.

[Ground reinforcement of the withdrawal conveying device 30]

8), the sliding structure 42 is provided on the ground, and the sliding structure 43 is installed on the bottom surface of the concave portion 33. In the drawing device 30 (see Fig. The ground and the bottom surface on which the sliding structures 42 and 43 are installed are grounded so as to obtain sufficient rigidity so as to withstand the same load as the furnace body of the blast furnace, respectively. Further, reinforcing steels 34 (see Fig. 12) receiving the sliding structures 42 and 43 are provided on the ground and the bottom surface.

12, a reinforcing steel material 34 having a flat upper surface such as an H-shaped steel is buried in the ground on which the sliding structure 42 is installed. On the upper surface of the reinforcing steel material 34, And the fixed side sliding plate 81 of the sliding structure 42 is supported on the upper surface of the rail 96 at the level L2. The rails 96 are arranged in a straight line along the longitudinal direction of the rails 96 by appropriately interposing a shim between the upper surfaces of the reinforcing steel material 34 and the upper surfaces of all the rails 96 arranged in parallel coincide with the level L2 .

The same reinforcing steel material 34 and a rail 96 are also provided on the bottom surface of the concave portion 33 where the sliding structure 43 is installed and the reinforcing steel material 34 and the rail 96 are slid The fixed side sliding plate 81 of the structure 43 is supported at the level L3.

The sliding structure 42 is continuously provided from the ground surface contacting the side surface of the foundation bottom 15 to the upper surface of the branch transfer platform 32. However, when the branching movement platform 32 is moved by the sliding structure 43, the fixed side sliding plate 81 of the sliding structure 42 is cut off at the peripheral portion of the branching movement platform 32 And the sliding structure 42 other than the concave portion 33 remaining on the ground.

[Guide Structure (50) of Draw-Out Carriage Device (30)]

8), the guide structure 50 is provided in each of the sliding structures 42, 43 in the drawing base 31 and the branch moving base 32. [

As shown in Fig. 13, the reinforcing steel material 34 described above is embedded in the ground, and the drawing base 31 is supported thereon. A sliding structure (42) is provided between the upper surface of the reinforcing steel (34) and the lower surface of the drawing base (31).

14, guide grooves 51 continuous in a straight line along the longitudinal direction of the sliding structure 42 (in the direction of the axis A1 in Fig. 2) are formed at the center of the sliding structure 42 described above .

The guide groove 51 has a depth reaching from the sliding structure 42 to the reinforcing steel member 34. On the other hand, a guide block 52 is provided on the lower surface of the draw-out tray 31 so as to be received in the guide groove 51.

The sectional shapes of the guide block 52 and the guide groove 51 are rectangular in the upper part, but are semicircular in the lower part, and a predetermined gap necessary for sliding is secured between the outline shapes. The cross-sectional shape may be another shape.

As shown in Fig. 15, the guide block 52 is fixed at two positions on the front side and the rear side in the moving direction of the lower surface of the drawing base 31. [

The guide structure 50 is constructed such that the two guide blocks 52 are coupled to the guide grooves 51 which are continuous in a straight line so that the direction of the drawing base 31 is oriented in the continuous direction of the guide grooves 51, (I.e., the direction of conveyance by the conveying roller). When the drawing base 31 is driven in the same conveying direction, the guide block 52 and the guide groove 51 are kept engaged with each other during movement. Therefore, the drawing base 31 accurately regulates the conveying direction, It is possible to accurately convey the target position to the target position.

For example, even if the draw-out tray 31 is moved for any reason other than the predetermined conveying direction, since the vertical load applied to the draw-out tray 31 is the large weight of the entire blast furnace, ) And can not come out to the outside. Therefore, the guide block 52 is held in the guide groove 51 to continue the guide, and the drawing base 31 is not meandered so that it can move only in a predetermined carrying direction.

[Transfer in the old furnace body drawing process (S5)] [

In the drawing-out process S5, the above-described drawing-out conveying device 30 is used, and the first conveying operation, the second conveying operation and the third conveying operation described below are sequentially performed, And returns the old blast furnace 10 to the old furnace body dismantlement place P3.

16, by driving the base portion 14 in the direction of the axis A1 (see FIG. 3) and sliding the sliding structure 41 at the level L1, the base portions 14 and And the globe compartment 10 constructed on this surface is integrally drawn out from the upper surface of the base bottom portion 15 and moved to the upper surface of the drawing base 31. [

17, the drawing base 31 is driven in the direction of the axis A1 (see FIG. 3) and the sliding structure 42 at the level L2 is slid, whereby the drawing base 31 And the foundation upper part 14 and the bulb blast furnace 10 mounted thereon are integrally moved to the upper surface of the branch transfer platform 32.

In the third transport operation, the branch transport platform 32 is mounted on the branch transport platform 32 by driving the branch transport platform 32 in the direction of the axis A2 (see FIG. 3) and sliding the sliding structure 43 in the level L3 The base unit 14 and the bulb 10 are moved integrally to the bulb disassembled place P3 (see Fig. 3).

By carrying out the first carrying operation, the second carrying operation and the third carrying operation in this order, the bulb 10 in the blast furnace installation place P1 can be carried to the bulb furnace disassembling place P3, The spherical body withdrawing step (S5) shown in Fig. 3 can be completed.

In order to drive the base upper portion 14, the drawing base 31 and the branch transfer base 32 in the above-described first to third carrying operations, either one of traction from the forward direction of the traveling direction or propelling from the rear direction But it is preferable to perform the following traction, for example.

As one example, when the base portion 14 is moved integrally with the bulb 10 in the first conveyance, a wire is connected to the base portion 14, and the winch is pulled from the new nose body building place P2 side Can be used. For traction, a hydraulic jack such as a center hole jack or the like may be used as a driving source.

At this time, in the new nose building construction site P2, which is the direction of towing, the wire for towing is inserted into the gap of the furniture of the new foundation 23 in the new foundation 23 and the new furnace 20 built on the new foundation 23. [ Or pulled from both sides of the new nose body construction place P2 so as to avoid the new base 23.

18 and 19 show an example of a specific traction device.

The towing device 70 has four central hollow jacks 71 provided in parallel on the ground in the vicinity of the new nose body construction place P2 and the wire 72 to be towed in each of them has an axis A1 And thus extends to the site foundation 13.

A through hole penetrating both side surfaces of the base foundation 13 in the direction of the axis A1 is formed in the base foundation 14. The wire 72 is passed through the through hole to form a new non- And is drawn out to the side opposite to the place P2. A reaction force receiving member (73) is inserted and fixed to the tip of the drawn wire (72).

In this traction device 70, traction of the horizontal direction is added to the base portion 14 by pulling each wire 72 in a state in which the four central hollow jacks 71 are synchronized, Is displaced with respect to the base bottom portion (15) by the support member (35), whereby the first conveyance described above is performed.

Since the weight of the base upper portion 14 and the spheroid body 11 and the spheroid body 12 on the base portion 14 are large, the pulling force exerted on the wire 72 is also great. However, by using the reaction force receiving member 73 Since cracks or the like do not occur in the periphery of the through hole of the base portion 14 due to the concentration of the load due to the pressure contact with the side surface of the base portion 14 with a large area.

Such a traction device 70 is also used for the second and third transport operations.

18, a center hole 71 is provided on the ground in the vicinity of the new furnace body construction place P2 as the towing device 70 such as the first transportation operation, and the center hole 71 is provided on the axis A1 To the drawing base 31 via the reaction force receiving member 73 and pulls it.

Although not shown in the third carrying operation, a center hole 71 is provided at the former disconnection disposal place P3 as the same draw device 70 as the first carrying operation, and a wire (not shown) extending in the direction of the axis A2 72 are connected to the branch transfer platform 32 via the reaction-force receiving member 73 and pulled.

[Preparation in new no-body introduction step (S6)]

In Fig. 4, the old furnace 10 is transferred from the blast furnace installation place P1 to the old furnace body dismantlement place P3 by the above-described spherical furnace body withdrawing step (S5). Subsequently, the new furnace body introduction step (S6) causes the new furnace 20 constructed in the new furnace body construction place P2 to be placed on the foundation bottom 15 of the site foundation 13 from which the old furnace 10 has been removed .

20, a part of the sliding structure 41 (the fixed side of FIG. 7) is provided on the upper surface of the base bottom 15 as a residue of the drawing conveying device 30, A part of the sliding structure 42 (the stationary-side sliding plate 81 in Fig. 7) remains on the ground between the base bottom 15 and the concave portion 33 . A part of the sliding structure 43 (the fixed side sliding plate 81 in Fig. 12) remains in the concave portion 33 of the trail where the branch transfer platform 32 has moved.

Therefore, as a preparation for carrying out the new novel body introduction step (S6), the above-described residue of the drawing-out conveying device 30 is demolded, and also the introduction conveying for use in conveying in the new noel body introduction step (S6) The device 39 is installed.

21, the introduction conveying device 39 includes an introducing base 38 for supporting the new foundation 23, and a sliding member 38 extending continuously from the bottom of the introducing base 38 to the front of the base bottom 15, A sliding structure 45 provided between the upper surface of the introduction base 38 and the lower surface of the new base 23 and a sliding structure 46 provided on the upper surface of the lower base 15.

Each of the sliding structures 44, 45 and 46 has the same structure as that of the sliding structures 41 to 43 described above, that is, the fixed side sliding plate 81, the moving side sliding plate 82, And a lining 83, which extend continuously in the direction of the axis A1 (see Fig. 4).

The sliding structure 44 is formed between the lower surface of the introducing stand 38 and the ground, and the fixed side formed on the ground is provided continuously to the front of the lower surface 15.

In the middle of the sliding structure 44, the concave portion 33 remains as described above. A support member 35 is provided in the concave portion 33 to support the sliding structure 45 over the concave portion 33 over the entire surface.

The sliding structure 44 may utilize a part of the sliding structure 42 remaining on the ground between the foundation bottom 15 and the concave portion 33.

The sliding structure 44 under the introducing stand 38 is constructed when the introducing stand 38 is installed in advance.

With this sliding structure 44, the introducing stand 38 is moved from the new nose body building place P2 to the blast furnace installation place P1 along with the new foundation 23 and the new furnace 20 to be mounted on the upper face thereof And is horizontally movable forward.

The height of the sliding surface of the sliding structure 44 is set to the same level L2 as that of the sliding structure 42. [ However, if a part of the sliding structure 42 is not useful, it may be set at another level.

In the portion provided on the ground of the sliding structure 44, the ground reinforcement by the reinforcing steel material 34 (see Fig. 12) is performed in the same manner as the above-described sliding structure 42 described above. However, when a part of the sliding structure 42 is utilized, the reinforcement of the ground by the reinforcing steel material 34 can be advantageously used.

The sliding structure 45 is provided between the lower surface of the new foundation 23 and the upper surface of the introduction table 38 when the new foundation 23 is provided on the introduction table 38 in advance.

With this sliding structure 45, the new base 23 is movable horizontally with respect to the introducing stand 38.

The height of the sliding surface of the sliding structure 45 is set to the level L4. The level L4 is set higher than the level L1 of the sliding structure 41 described above.

The sliding structure 46 is constituted by a fixed side provided on the upper surface of the base bottom 15 and a moving side of the sliding structure 45 described above (the new base 23 side).

The new foundation 23 is moved horizontally with respect to the introducing stand 38 by the sliding structures 45 and 46 so that the foundation And is transferred to the upper surface of the lower portion 15

In order to perform such sliding, the height of the sliding surface of the sliding structure 46 is set to the same level L4 as that of the sliding structure 45. [

In order to secure the level L4 in the sliding structure 46, a restoration foundation 26 for supporting the sliding structure 46 is provided on the upper surface of the foundation foundation 15. As shown in Fig.

22, on the upper surface of the foundation bottom 15 of the foundation foundation 13, at the time of completion of the guiding element withdrawing step (S5), the fixed side sliding plate of the sliding structure 41 installed in the foundation dividing step (S3) (See Fig. 7) remains. Thus, the stationary-side sliding plate 81 of the sliding structure 41 is dismantled. The upper surface of the base bottom portion 15 exposed after removing the fixed side sliding plate 81 of the sliding structure 41 is a surface formed by horizontal cutting by wire sawing in the base dividing step S3, Residual can not be avoided. Thus, the upper surface of the foundation bottom 15 is cut off over a predetermined thickness, and the upper surface of the foundation lower 15 is smoothed.

A restoration foundation 26 is provided on the upper surface of the base bottom portion 15 that has become smooth.

The restoration foundation 26 includes a pad 84 mounted on the upper surface of the foundation bottom 15, a pad liner 85 mounted on the pad 84, (86). A rail 96 is provided on the upper surface of the pad liner 85 for level adjustment similar to that provided on the upper surface of the reinforcing steel material 34 for reinforcing the ground mentioned above. A sliding structure 46 is provided on the upper surface of the rail 96, Respectively.

The pad 84 supports the fixed side sliding plate 81 of the sliding structure 46 via the pad liner 85 and the rail 96 and is fixed at predetermined intervals along the continuous direction of the fixed side sliding plate 81 And is arranged on the upper surface of the base bottom portion 15. The pad 84 is capable of supporting the weight of the fixed side sliding plate 81 but is adjusted such that the sliding surface of the fixed side sliding plate 81 becomes the level L4 by allowing the operator to deform the pad 84. [

Such a pad 84 can be used as long as it can support the weight of the fixed side sliding plate 81 and can be deformed at the setting step so as to be cured by a predetermined period of time after installation or by a predetermined treatment. A high-grout or thermosetting synthetic resin material can be used.

The height of the upper surface of the rail 96 is uniformly matched to a predetermined level so that the upper surface of the fixed-side sliding plate 81, that is, And the sliding surface is adjusted to be the level L4.

The base grout 86 is made of concrete or the like, and is filled around the pad 84 after height adjustment of the fixed side sliding plate 81. It is considered that the filling of the base grout 86 is from the upper surface of the foundation bottom 15 to the height at which the side surface of the rail 96 is covered and the upper surface side of the rail 96 and the fixed side sliding plate 81 are exposed Lt; / RTI >

The base plate 86 is fixed and the restoration foundation 26 is completed. By this restoration foundation 26, the height of the fixed side sliding plate 81 is adjusted to the height previously adjusted, that is, the state in which the sliding surface becomes the level L4 Lt; / RTI >

22, the fixed-side sliding plate 81 of the sliding structure 46 is supported by the restoring base 26 so as to be at the level L4 of the sliding surface, and a new base 23 Side sliding plate 82 on the lower surface of the new foundation 23 provided as the sliding structure 45 is guided to the fixed side sliding plate 25 on the upper surface of the lower base 15 through the low friction lining 83, (81), so that a function as the sliding structure (46) is obtained.

21, the new foundation 23 and the new furnace 20 are sequentially moved by the above-described sliding structures 44, 45, and 46, and are transported to the base 15, The transport device 39 is constructed.

Further, in the introduction conveying device 39, the sliding structures 44, 45, and 46 are adjusted with high precision so that the horizontal error is 3 mm or less per 1 meter of movement.

Further, in the introduction conveying device 39, the same guide structure as that of the drawing-out conveying device 30 is provided between the fixed side of the sliding structures 44, 45, 46 and the new foundation 23 and the introducing stand 38, (50) is provided to stabilize the contents during transportation, and to bring the fresh furnace (20) to the correct position on the foundation bottom (15).

[Transfer in the new naked body introduction step (S6)] [

In the new furnace body introduction step (S6), the first carrying operation and the second carrying operation described below are sequentially performed by using the above-described introducing carrying device (39), whereby the new furnace body (20) to the blast installation place (P1).

23, the introduction base 38 in the new nose body building place P2 is driven in the direction of the axis A1 (see Fig. 3) to move the sliding structure 44 at the level L2, The new furnace 20, the new base 23 and the feeding base 38 are horizontally moved integrally and transported from the new noche body construction place P2 to a position adjacent to the foundation bottom 15. [

24, the new foundation 23 on the introducing base 38 adjacent to the base bottom 15 is driven in the direction of the axis A1 (see Fig. 3) L4 to slide the new furnace 20 and the new base 23 integrally horizontally and gradually transfer to the sliding structure 46 at the same level L4, To the upper surface of the restoration foundation 26 formed on the foundation bottom 15.

Thereby, a new base 23 and a new furnace 20 are provided on the foundation bottom 15 and the introduction of the new furnace 20 into the blast furnace installation place P1 is completed.

In these first and second transport operations, traction or propulsion may be used to drive the introduction base 38 and the new foundation 23, and the traction device 70) (see Figs. 18 and 19).

Further, the introduced new foundation 23 and the restoration foundation 26 are firmly fixed until the new building operation S7. For example, the mortar having high fluidity can be introduced and solidified between the new foundation 23 and the restoration foundation 26 to perform fixing. This fixation can be performed in a short period of time in parallel with the connection of peripheral equipment of the new furnace 20 and the like.

[Effect of First Embodiment]

According to the present embodiment, there is the effect described below.

The new foundation 23 is constructed in the new furnace body construction place P2 different from the blast furnace installation place P1 while the old furnace 10 is in the operating state (the old furnace operation S1) It is possible to construct the new furnace body 21 and the new furnace body pillar 22 to be the new furnace 20 on the furnace. Then, after the old blast furnace 10 is blown off (S4), the old furnace body withdrawing step (S5) and the new furnace body introduction step (S6) are performed to remove the foundation top (14) (The old furnace body 11 and the old furnace pillar 12) can be removed and the new foundation 23 and the new furnace 20 constructed above can be collectively replaced. The removed old furnace 10 can be properly dismantled in a state where the new furnace 20 is restarted (renewed operation (S7)) in the separate old furnace body dismantling place P3.

Therefore, in the present embodiment, the repair work period of the blast furnace can be shortened to about 50 to 70 days.

The base foundation 14 and the new foundation 23 and the new nominal pillar 12 and the new nominal pillar 22 are collectively formed by replacing the base body 14 and the new base body 21 The equipment (various equipment, piping and the like) installed between the old furnace body 11 and the old furnace body 12 can be taken out to the outside of the furnace with the furnace as it is. In addition, the equipment installed between the new furnace body 21 and the new furnace body 22 can be preliminarily introduced in the new furnace body building step S2 and introduced into the furnace as a whole, can do.

In this embodiment, at the same time as the replacement of the spherical hollow body 11 and the new hollow body 21, the spherical hollow body 12 can be replaced with the new hollow body column 22, , There is no limitation to the dimension of the columnar body column 12.

In other words, even in the case of a large new pneumatic body 21 not limited to the old pneumatic column 12, it is possible to cope with this by constructing the new pneumatic column 22 in accordance with the new pneumatic column 22 in advance, .

In addition, since the new fresh body 21 conveyed in the new fresh body introducing step (S6) can be supported by the new noz- zle post 22 and can be conveyed integrally in a stable state, the degree of the confinement can be safely performed.

In the present embodiment, the introduction conveying device 39 conveys the new base material 23 and the new furnace 20 in the new furnace body introducing step S6, that is, the new furnace body building place P2, P1 onto the base 15 of the base.

At this time, by carrying out the introduction conveying device 39 linearly, the conveyance can be carried out with a minimum of driving without any directional change, and the conveyance can be carried out by the conveyance of the new basement body 21 and the new non- It is possible to reduce the possibility of occurrence of a failure, and to carry out safe transportation.

In the present embodiment, the sliding structures 44, 45, and 46 of the introduction conveying device 39 use the fixed side sliding plates 81 extending over a long distance as the fixed side (lower side) Side sliding plate 82 is formed of a stainless alloy or the like having a low coefficient of friction and the moving side sliding plate 82 is covered with the low friction lining 83 including the solid lubricant, The friction coefficient can be remarkably reduced. For this reason, the new furnace 20 including the new foundation 23 and the new furnace body 21 and the new furnace body 22 to be conveyed can be conveyed even if the capacity is larger than 8000 tons, for example .

In the introduction conveying device 39, the sliding structures 44, 45, and 46 are adjusted with high precision so that the horizontal error is 3 mm or less per 1 meter of movement. Therefore, the deformation and the like occurring in the new furnace body 21 and the new furnace body 22 on the new foundation 23 can be sufficiently restrained, and high-density and safe transportation can be performed.

Guide grooves 51 are formed on the fixed sides of the sliding structures 44, 45 and 46 in the introduction conveying device 39 and guide grooves 51 are formed on the lower surfaces of the new foundation 23 and the introduction base 38, The guide is not peeled from the large capacity of the new furnace 20 while the guide structure 50 is simple and the contents are stabilized during transportation and the new furnace 20 is connected to the base bottom 15 ) To the correct position on the screen.

The conveyance of the new furnace 20 and the new foundation 23 is performed by the introduction conveying device 39 at the level L2 by the sliding structure 44 and by the horizontal movement of the introduction base 38, The new furnace 20 and the new foundation 23 are not moved up and down because of the horizontal movement to the level L4 by the sliding structures 45 and 46 extending from the upper surface of the base 15 to the upper surface of the base 15. [ The construction period can be shortened.

In the present embodiment, the drawing conveying device 30 conveys the base upper portion 14 and the bulb blind 10 in the bulge draw-out step S5, that is, the bulb installation place P1, P3).

The portion of the path, that is, the portion from the vicinity of the site foundation 13 to the concave portion 33 is defined as an L-shaped path for redirecting the drawing transportation device 30 on the way, ), It is possible to effectively utilize the ground for reinforcement and maintenance so as to withstand the heavy load.

That is, since the load is applied to the large new foundation 23, the new noel body 21 and the new noel pillar 22, the ground on which the introduction conveying path is provided is sufficiently reinforced. The ground is required to be reinforced because it receives a large load of the foundation upper portion 14, the spheroid element 11 and the spheroid element pillar 12 in the lead-out conveyance path, and this reinforcement is partially shared with the introduction conveyance path, The work can be reduced.

The drawer transport device 30 extends in the direction of intersection (the direction of the axis A2) from the midway while partially sharing the route with the introducing transport device 39 (in the direction of the axis A1) P3) can be set at a place different from the new furnace body building place (P2), and interference of the work place can be avoided.

Further, there is no problem even if deformation or the like occurs due to disassembly of the spheroidal body 11 and the spheroidal pillar 12 after the drawing, and there is no problem even if the drawing-out conveying device 30 is changed in direction on the way.

Particularly, in the drawing conveying apparatus 30, the drawing base 31 moving in the direction of the axis A1 is moved in the direction of the axis A2 in the direction change from the direction of the axis A1 to the direction of the axis A2 This makes it possible to smoothly and reliably carry out the work without requiring a special mechanism for changing the direction.

The concave portion 33 in the direction of the axis A1 in which the branch transfer platform 32 is to be moved is formed and the branch transfer platform 32 is moved to the level L3 lower than the level L2 at which the draw- It is possible to realize a configuration for loading the draw-out platform 31 on the branch transfer platform 32 without using a lifting mechanism or other special device.

The horizontal movement of the sliding structure 41 from the upper surface of the base bottom 15 to the upper surface of the drawing base 31 and the horizontal movement at the level L1 of the base structure 14, Since the horizontal movement at the level L2 according to the sliding structure 42 of the table 31 and the horizontal movement at the level L3 corresponding to the sliding structure 43 of the branch moving table 32 are performed, There is no case in which the base portion 14 is caused to ascend or descend, and the conveyance in the former body withdrawing step (S5) can be stabilized and highly accurate.

In this embodiment, the sliding structures 41, 42, and 43 of the drawer carrying device 30 use the fixed side sliding plates 81 extending over a long distance as the fixed side (lower side) Side slide plate 82 is formed of a stainless alloy or the like having a low coefficient of friction and the moving side sliding plate 82 is covered with the low friction lining 83 including the solid lubricant, The friction coefficient can be remarkably reduced. Therefore, even if the bulb 10 including the base 14, the bulb 11 and the bulb 12 is large, for example, exceeding 8000 tons, it is possible to carry the bulb .

In this embodiment, in the base dividing step (S3), cutting is performed sequentially in a plurality of cutting sections, and the base upper part 14, the bulb body 11 and the bulbous pillar 12 are lifted so as to fill the high- It is possible to vertically cut the field foundation 13 in a state in which the ballast run S1 continues and the sliding structure 41 can be installed between the foundation upper portion 14 and the foundation lower portion 15 have.

[Second embodiment]

25 and 26 show a second embodiment of the present invention.

The present embodiment is similar to the above-described first embodiment, and performs the number of blast furnaces by roughly progressing from FIG. 1 to FIG. However, this embodiment is different from the above-described first embodiment in the configuration of the drawing carriage 30A used in the former draw-out step (S5). Therefore, in the following description, overlapping descriptions will be omitted for common elements, and the differences will be described.

In the above-described first embodiment, in order to perform the third conveying operation (conveyance in the direction of the axis A2 to the former pavement disposal place P3), the drawing conveying device 30 (see Fig. 8) A sliding structure 43 provided on the bottom surface thereof and a branch moving platform 32 moving in the recess 33 are used.

In the drawer carrying apparatus 30A of the present embodiment, these concave portions 33 and the branching traveling platform 32 are omitted, and the third carrying operation is performed at the same level L2 as the second carrying operation.

25 and 26, the drawing conveying device 30A has the drawing base 31 and the sliding structures 41 and 42 which are the same as those of the first embodiment described above, and the sliding structure 41 has the level L1 , And the sliding structure 42 is set to the level L2.

The sliding structure 42 is supported on the ground over its entire length and is reinforced by the reinforcing steel material 34 shown in Fig.

Like the sliding structure 42, the sliding structure 43 is provided on the ground level L2.

The intersection portions of the sliding structure 42 and the sliding structure 43 are formed by flattening the upper surface which is the sliding surface smoothly on the welded portion where the respective fixed side sliding plates 81 (see Fig. 7) have.

In this embodiment, the drawing carriage 31 is conveyed in the direction of the axis A1 using the sliding structure 42 by the second conveying operation, and the intersection of the sliding structure 42 and the sliding structure 43 Lt; / RTI > In the third conveyance operation, the drawing base 31 is conveyed from the crossing portion in the direction of the axis A2 by using the sliding structure 43, and is conveyed to the bulb dismounting place P3.

According to this embodiment, the same effects as those of the first embodiment can be obtained.

Further, in the drawing device 30A, it is not necessary to form the concave portion 33 in the ground, so that the civil engineering work can be simplified.

On the other hand, it is necessary to smoothly polish the upper surface, which is the sliding surface, on each of the fixed side sliding plates 81 at the intersections of the sliding structure 42 and the sliding structure 43. Therefore, it is preferable to appropriately select one of the above-described first embodiment and the present embodiment in consideration of a workload corresponding to a situation on the spot or the like.

[Third embodiment]

27 to 31 show the third embodiment of the present invention.

The present embodiment is similar to the above-described first embodiment, and performs the number of blast furnaces by roughly proceeding as shown in Fig. 1 to Fig. However, the configuration of the drawing conveying device 30B used in the former draw-out step (S5) and the introduction conveying device 39B used in the new noel body introduction step (S6) are different from those of the above-described first embodiment. Therefore, in the following description, overlapping descriptions will be omitted for common elements, and the differences will be described.

First, a description will be given of the drawing transportation device 30B used in the spherical furnace body drawing process (S5).

In the first embodiment described above, the drawing conveying device 30 (refer to FIG. 8) performs the first to third conveying operations, so that the sliding structure 41 (the level L1), a sliding structure 42 (level L2) in the direction of the axis A1 and a sliding structure 43 (level L3) in the direction of the axis A2. The upper and lower surfaces of the drawing base 31 are set as the level L1 and the level L2 and the level L3 is set lower than the level L2 by a predetermined height, that is, the recess 33 is formed, The drawer base 31 is mounted on the branch transfer platform 32 to realize the direction change in the direction of the axis A2.

On the other hand, in the present embodiment, the drawing carriage 31 and the second conveying operation are omitted, and the first conveying operation is performed by moving the foundation upper portion 14 and the guide bulb 10 from the foundation bottom portion 15 to the branch conveyor base 32 And the branch transport platform 32 on which the foundation upper portion 14 and the bulb 10 are mounted as the third transport operation is moved horizontally in the direction of the axis A1 to a level L3 'In the direction of the axis A2.

For this reason, the drawing carriage 30B of the present embodiment has the following configuration, which is different from the above-described first embodiment.

27, 28, and 29, an intermediate mount 61 is provided on the ground from the vicinity of the foundation bottom 15 toward the new nomenclature construction site P2. The distal end of the intermediate mount 61 on the side of the new nose body construction site P2 extends to the front of the position for changing the direction.

A branch stand 62 is provided on the ground from the position to change the direction to the bulb disassembled place P3 (see Fig. 3). On the branch platform 62, a branch transfer platform 32 is provided.

The fixed side (the fixed side sliding plate 81 shown in Fig. 7) is provided on the base (bottom side) Extends from the upper surface of the lower portion 15 to the upper surface of the branch transfer platform 32 after passing through the upper surface of the intermediate transfer base 61. The height of the sliding surface of the sliding structure 41 is set to the same level L1 as in the first embodiment.

The sliding structure 43 as in the first embodiment is provided between the upper surface of the branch platform 62 and the lower surface of the branch transfer platform 32. The height of the sliding surface of the sliding structure 43 is set to a level L3 'that is lower than the level L1 of the sliding structure 41 by the height of the branch transfer platform 32. [

In the first embodiment, the sliding structure 43 is provided on the bottom surface of the concave portion 33 (see FIG. 8), and the sliding surface thereof is lower than the ground surface L3. However, Is higher than the ground because it is the upper surface of the branch platform 62 installed on the ground. However, points lower than the height (the level L2 in the first embodiment, the level L1 in the present embodiment) by the height of the branch transfer platform 32 used for direction conversion are common.

Next, the introduction conveying device 39B (see Figs. 30 and 31) used in the new nose body introduction step (S6) will be described.

In the first embodiment described above, the introducing transport device 39 (see Fig. 21) has a sliding structure 44 for sliding the bottom side of the introducing platform 38 to perform the first transport operation And sliding structures 45 and 46 for sliding the new foundation 23 against the upper surface of the introduction base 38 and the upper surface of the restoration foundation 26 in order to carry out the second transportation.

On the other hand, in the present embodiment, the first transfer operation for horizontally moving the introduction stand 38 is omitted, and the second transfer operation, that is, The blast furnace 20 is horizontally moved as it is and is transported to the upper surface of the recovery base 26 in a single operation.

Therefore, the introduction conveying device 39B of the present embodiment has the following configuration, which is different from the above-described first embodiment.

30 and 31, a new building base 23 for building a new furnace 20 is provided on a building base (construction site) 63). A sliding structure 45 is provided between the lower surface of the new foundation 23 and the upper surface of the building table 63 so that the height of the sliding surface becomes the level L4.

In this embodiment, between the new furnace body constructing place P2 and the base lower portion 15, the intermediate frame 61 and the branch frame 61 (see Fig. 27) of the drawing conveying apparatus 30B 62 and the sliding structures 41, 43 of the respective upper surfaces remain. The upper surfaces of the sliding structures 41 and 43 are provided with the same height as that of the building table 63 and the auxiliary tables 64 and 65 are provided on the intermediate table 61 and the branch table 62, Let's do it.

Also in this embodiment, a restoration foundation 26 is formed on the upper surface of the foundation bottom 15, and the height of the upper surface thereof is the same as that of the building foundation 63. [ The fixed side of the sliding structure 46 is laid from the upper surface of the restoration foundation 26 to the upper surface of the auxiliary supports 65, 64. As in the first embodiment, the sliding structure 46 shares the moving side of the sliding structure 45 formed on the lower surface of the new base 23 (see FIG. 23), and the sliding surface thereof is set to the level L4 , And is attached to the fixed end of the sliding structure (45) on the upper surface of the building table (63) after the installation, thereby finishing the upper surface smoothly.

In this embodiment, the base upper portion 14 and the bulb blind 10 are moved from the base bottom portion 15 to the branch transfer base portion 32 using the sliding structure 41 And then the branch transfer platform 32 is transported to the bulb disassembled place P3 (see FIG. 3) by using the sliding structure 43. Then, as shown in FIG.

On the other hand, in the new furnace body introduction step (S6), the new foundation 23 and the new furnace 20 are installed to the blast furnace installation place P1 (P1) after the installation of the recovery base 26, the auxiliary frames 64, 65, ).

According to this embodiment, the same effects as those of the first embodiment can be obtained.

In the drawing conveying apparatus 30B used in the drawing-out process S5, the second conveying operation in the drawing-out step S5 of the first embodiment is not necessary, A1) and the third transporting operation in the direction of the axis A2 at the level L3 ', and the towing device 70 (see Figs. 18 and 19) It is possible to reduce the work including the installation and dismantling of the facilities such as the installation and the like, and also to shorten the construction period.

Further, as in the first embodiment, it is not necessary to form the concave portion 33 in the ground, so that the civil engineering work can be simplified.

Since the branching platform 62 and the branching platform 32 are used for transport in the direction of the axis A2, a plurality of intersecting portions 42 between the sliding structure 42 and the sliding structure 43 as in the second embodiment It is not necessary to perform connection and polishing.

On the other hand, in the introduction conveying device 39B (see Figs. 30 and 31) used in the new no-body introducing step S6, after the recovery base 26, the auxiliary supporting frames 64, 65 and the sliding structure 46 are installed, The base 23 and the new furnace 20 can be carried to the blast furnace installation place P1 at once.

Therefore, as in the case of the first embodiment or the second embodiment, compared with the case where the first and second transport operations are performed, installation of the equipment by driving of the traction device 70 (see Figs. 18 and 19) It is possible to reduce work including demolition, and to shorten construction period.

Since the new foundation 23 and the new furnace 20 are transported in a short time to the blast furnace installation place P1 and there is no stop in the middle, the stability of transportation is high and the accuracy of transportation can be increased.

[Fourth Embodiment]

32 and 33 show a fourth embodiment of the present invention.

The present embodiment is similar to the above-described first to third embodiments, and performs the number of blast furnaces by each step shown in Fig. It is to be noted that the plane layout of the blast furnace installation place P1, the new furnace body building place P2 and the old furnace body dismantlement place P3 is different from the above-described first to third embodiments, And the introduction conveyance path used in the new nose body introduction step (S6) are also different.

2, the new furnace body building place P2 is provided in the direction of the axis A1 with respect to the blast furnace installation place P1, and the blast furnace installation place P1 is provided in the blast furnace installation place P1 in the first to third embodiments, (P3) is provided on the axis A2 extending in the cross direction from the middle of the new furnace body construction place (P2).

As shown in Figs. 32 and 33, in the present embodiment, the new furnace body construction site P2 and the old furnace body demolition site P3 are disposed opposite to the arrangement of Fig. 2 described above. Therefore, in this embodiment, the withdrawal conveying path 30 'extending from the blast furnace installation place P1 to the old furnace body dismantling place P3 is linearly formed, and from the new furnace body building place P2 to the blast furnace installation place Shaped conveying path 39 'extending from the middle of the drawing-out conveying path 30' to an intersecting direction.

In this embodiment, the conveyance is performed as follows.

32, the field foundation 13 is divided in the blast furnace installation place P1, and the base foundation 14 and the guide bulb 10 (the bulbous furnace 11 and the bulb- Is linearly moved to the bulb disassembled place P3 along the take-out conveying path 30 '.

33, the new furnace body 20 (new furnace body 21 and new furnace body pillar 22) constructed in the new furnace body building place P2 is integrated with the new base 23 in the new furnace body introducing step S6 To the blast furnace installation place P1 along the introduction conveying path 39 '. In the introduction conveying path 39 ', first of all, the movement is performed along the axis A2 and the direction is changed, followed by the movement along the axis A1.

The specific mechanisms of the conveying apparatuses in the draw-out conveying path 30 'and the introduction conveying path 39' are the same as the draw-out conveying apparatuses 30, 30A and 30B of the above- The same configurations as those of the devices 39, 39A, and 39B can be used and the configurations of the first embodiment (using the levels L1 to L4), the second embodiment (using the levels L1, L2, and L4) (Using the levels L1, L3 ', and L4).

According to this embodiment, the same effects as those of the first to third embodiments can be obtained. However, the effect due to the linear transport path for introduction in the respective embodiments can not be obtained.

[Fifth Embodiment]

34 and 35 show a fifth embodiment of the present invention.

The present embodiment is similar to the above-described first to third embodiments, and performs the number of blast furnaces by each step shown in Fig. It is to be noted that the plane layout of the blast furnace installation place P1, the new furnace body building place P2 and the old furnace body dismantlement place P3 is different from the above-described first to third embodiments, And the introduction conveyance path used in the new nose body introduction step (S6) are also different.

In the present embodiment, the draw-out conveying path 30 'and the introducing conveying path 39' each perform a direction change on the way.

34 and 35, the draw-out conveying path 30 'extends from the blast furnace installation place P1 along the axis A1, changes direction in the middle and extends in the upward direction along the axis A2 along the axis A2 , And a bulb-shaped body disassembling place P3 is provided at an end thereof. The introduction conveying path 39 'extends along the axis A1 from the blast furnace installation place P1 and changes direction in the middle to extend in the downward direction along the axis A2. (P2).

Therefore, in the present embodiment, the drawing-out conveying path 30 'and the introducing-purpose conveying path 39' are configured so as to change their directions in the middle, and at the same time, And the path is a common part for the lead-out transport path 30 'and lead-in transport path 39'.

In this embodiment, the conveyance is performed as follows.

34, the field foundation 13 is divided in the blast furnace installation place P1 and the base foundation 14 and the guide holes 10 (the bulbous furnace 11 and the bulbous furnace 10) (Not shown) are moved integrally to the blast mounting place P1 along the take-out conveying path 30 '. In the drawing-out conveying path 30 ', the movement is first performed along the axis A1, the direction is changed toward the former nozzle-disassembling place P3, and the movement is performed along the axis A2.

35, the new furnace body introduction step (S6) is a step of bringing the new furnace 20 (the new furnace body 21 and the new furnace body pillar 22) constructed in the new furnace body construction place P2 into a new furnace body To the blast installation place P1 along the introduction conveying path 39 '. In the introducing conveyance path 39 ', the first movement is performed along the axis A2 (toward the old solenoid disassembly place P3), the direction is changed toward the blast furnace installation place P1, and the movement is made along the axis A1 .

The specific mechanisms of the conveying apparatuses in the draw-out conveying path 30 'and the introduction conveying path 39' are the same as the draw-out conveying apparatuses 30, 30A and 30B of the above- The same configurations as those of the devices 39, 39A, and 39B can be used and the configurations of the first embodiment (using the levels L1 to L4), the second embodiment (using the levels L1, L2, and L4) (Using the levels L1, L3 ', and L4).

According to this embodiment, the same effects as those of the first to third embodiments can be obtained.

On the other hand, since the draw-out conveying path 30 'and the introducing conveying path 39' simultaneously change the direction, the degree of freedom of selection of the installation place of the new furnace body construction place P2 and the old furnace body dismantlement place P3 It is easy to apply in the blast furnace where the peripheral facilities are congested.

It is also possible to share the conveying device in the common portion along the axis A1 by the drawing conveying path 30 'and the introduction conveying path 39', and also by arranging the portion along the axis A2 in a straight line A transport device such as a traction device 70 can be commonly used.

The drawing conveying devices 30, 30A, 30B, the introduction conveying devices 39, 39B in the first or third embodiment described above, In the case where the direction of the conveying direction is changed midway in the conveying path 30 'and the introducing conveying path 39', the angle of the direction changing is not limited to 90 degrees and may be 45 degrees, 60 degrees or any other angle .

In addition, the number of regions to be redirected in each conveyance path such as the withdrawal conveyance path 30 'and the introduction conveyance path 39', that is, the number of times of performing the redirection in one conveyance path is not limited to 1 Or two or more.

[Sixth Embodiment]

36 and 37 show a sixth embodiment of the present invention.

The present embodiment is similar to the above-described first to third embodiments, and performs the number of blast furnaces by each step shown in Fig. It is to be noted that the plane layout of the blast furnace installation place P1, the new furnace body building place P2 and the old furnace body dismantlement place P3 is different from the above-described first to third embodiments, And the introduction conveyance path used in the new nose body introduction step (S6) are also different.

In the present embodiment, the blast furnace installation place P1, the new furnace body building place P2 and the old furnace body dismantlement place P3 are arranged in a straight line along the axis A1. Particularly, with respect to the blast furnace installation place P1, the new furnace body building place P2 and the old furnace body dismantlement place P3 are disposed on the opposite side.

In the present embodiment, the drawing conveying path 30 'and the introducing conveying path 39' are linearly formed. These drawing-out conveying path 30 'and introducing conveying path 39' are provided on the opposite sides with the blast-installing place P1 therebetween and are independent from each other without a common portion.

In this embodiment, the conveyance is performed as follows.

36, the site foundation 13 is divided in the blast furnace installation place P1, and the foundation foundation 14 and the guide bulb 10 (the bulbous furnace 11, Is linearly moved to the bulb disassembled place P3 along the take-out conveying path 30 '.

37, the new furnace body introduction step (S6) is a step of bringing the new furnace 20 (the new furnace body 21 and the new furnace body pillar 22) constructed in the new furnace body construction place P2 into a new furnace body To the blast installation site P1 along the introduction conveying path 39 '.

The specific mechanisms of the conveying apparatuses in the draw-out conveying path 30 'and the introduction conveying path 39' are the same as the draw-out conveying apparatuses 30, 30A and 30B of the above- The same configurations as those of the devices 39, 39A, and 39B can be used and the configurations of the first embodiment (using the levels L1 to L4), the second embodiment (using the levels L1, L2, and L4) (Using the levels L1, L3 ', and L4).

In the present embodiment, however, the drawing conveying path 30 'and the introducing conveying path 39' are linearly independent from each other. For this reason, in the present embodiment, the configurations (levels L3 and L3 ') for the same direction conversion in the above-described embodiments can be omitted.

According to this embodiment, the same effects as those of the first to third embodiments can be obtained.

[Seventh Embodiment]

38 and 39 show a seventh embodiment of the present invention.

The present embodiment is similar to the above-described first to third embodiments, and performs the number of blast furnaces by each step shown in Fig. It is to be noted that the plane layout of the blast furnace installation place P1, the new furnace body building place P2 and the old furnace body dismantlement place P3 is different from the above-described first to third embodiments, And the introduction conveyance path used in the new nose body introduction step (S6) are also different.

In this embodiment, as in the sixth embodiment described above, the drawing-out conveying path 30 'and the introducing-purpose conveying path 39' are linearly formed.

However, the introduction conveying path 39 'extends along the axis A 1 at an angle of 45 degrees with respect to the axis A 1 (the rectangular conveying path 30' The diagonal direction of the foundation 13).

In this embodiment, it is possible to carry the globe compartment 10 and the fresh furnace 20 in the same order as in the sixth embodiment.

According to this embodiment, the same effects as those of the sixth embodiment can be obtained. The introduction conveying path 39 'is provided along the axis A3 at an angle of 45 degrees with respect to the axis A1 so that the new nose body building place P2 is located at a position different from that of the sixth embodiment Can be set.

That is, the arrangement of the sixth embodiment as described above, that is, the blast furnace installation place P1, the new furnace body building place P2 and the old furnace body disassembly place P3 are defined on the axis A1 from the relationship of the peripheral equipment of the blast furnace, Even if it can not be arranged side by side on the straight line, the position of the new nose body building place P2 can be changed and coped with. The introduction conveying path 39 'is inclined toward the place where the new furnace body building place P2 can be installed (the axis A3 is inclined at 30 degrees, 60 degrees, 120 degrees, 135 degrees to the axis A1 ).

[Modifications]

The present invention is not limited to the above-described embodiments, but variations and the like within the scope of achieving the object of the present invention are included in the present invention.

The foundation foundation (13) corresponds to a conventional blast furnace foundation such as a reinforced concrete structure constructed on the ground of the blast furnace installation site (P1).

Although the site foundation 13 is divided into the foundation 14 and the foundation 15 in the foundation dividing step S3, the location of the site foundation 13 is selected in consideration of the reinforcing structure inside the site foundation 13 desirable.

As the new base 23, a slab-shaped foundation structure that widens in a planar manner may be used, and a steel structure or a part thereof may be filled with a refractory filler such as a castable.

The new foundation 23 is introduced into the blast furnace installation place P1 to constitute the foundation of the new blast furnace 20 and may previously contain equipment and piping wiring lines such as cooling pipes required for the blast furnace function.

The installation of the equipment on the new foundation 23 may be carried out prior to the construction of the new furnace body 21 and the new furnace body 22 on the upper surface of the new foundation 23 or may be carried out simultaneously in parallel.

The drawing base 31, the branch moving base 32, the introduction base 38, the intermediate base 61, the branch base 62, and the building base 63 in the respective embodiments are supported on the upper surface As long as it can support loads such as the foundation upper portion 14 and the bulb blast furnace 10 or the new base 23 and the new furnace 20 or the like and a steel frame structure can be used.

Here, when conveying the new furnace 20 and the new foundation 23 in the new furnace body introducing step S6, it is required to minimize the deformation of the new furnace body 21 and the new furnace body post 22 that have completed the designing process do. Therefore, it is desirable that sufficient rigidity is ensured in the introduction conveying devices 39, 39B by conveyance of the new furnace body 21 or the like.

On the other hand, in the draw-out conveying device 30 (30A, 30B), the introduction conveying devices 39, 39B ) Is not required.

Although the sliding structures 41 to 46 are used for the drawing conveying devices 30, 30A and 30B and the introduction conveying devices 39 and 39B, they are not limited to the fixed side sliding plate 81 and the moving side sliding It is sufficient that the fixed side sliding plate 81 of the plate 82 is a plate-shaped member continuous in the carrying direction. The moving side sliding plate 82 is not limited to being continuous in the carrying direction but may be intermittently arranged, For example, a plurality of pads on the disk may be arranged, and details and the like may be appropriately changed if the desired sliding performance can be obtained.

The movable side sliding plate 82 is provided with the low friction lining 83 because of friction reduction with respect to the fixed side sliding plate 81. This may be formed on the fixed side sliding plate 81 side, Side sliding plate 81 and the moving-side sliding plate 82 may be directly brought into contact with each other, and a lubricant having a high lubricity under high load may be supplied between the fixed-side sliding plate 81 and the moving-

The low-friction lining 83 is not limited to a solid lubricant such as a PTFE, molybdenum disulfide, or graphite powder fixed on the surface of the substrate, Or the like. Further, the low-friction lining 83 may be omitted, and the solid lubricant may be dispersed in the viscous medium and supplied as so-called grease between the fixed side sliding plate 81 and the moving side sliding plate 82.

The guide conveying devices 39 and 39B are provided with the guide structures 50 to increase the density of the conveying axes in the drawing conveying devices 30, The conveying devices 30, 30A and 30B for drawing may have a reduced precision. However, in order to carry out safe transportation, it is preferable to add a configuration for preventing any skew, and the configuration described in the above-mentioned Patent Document 1 can be appropriately adopted.

In each of the above-described embodiments, the drawing conveying devices 30, 30A, and 30B and the introduction conveying devices 39, 39A, and 39B are formed, and the height levels L1 to L4 are set in each of them. Specifically, the first embodiment (using the levels L1 to L4), the second embodiment (using the levels L1, L2 and L4), the third embodiment (using the levels L1, L3 'and L4) The same height levels L1 to L4 are used in the drawing-out conveying path 30 'and the introducing-use conveying path 39' in the fourth to seventh embodiments.

The concrete values of the height levels L1 to L4 may be appropriately set in practice. Further, another level may be added depending on the crossing of the conveyance path or the like.

However, the level L4 (level of the underlying base 15 that is made smooth) is set to a level L1 (the level of the base foundation 13 is cut horizontally and divided into the base 14 and base 15) It is preferable to always set the upper surface of the foundation bottom 15 to form a new restoration foundation 26 by setting the level of the upper surface of the base foundation 26 on which the restoration foundation 26 is provided. The introduction of the new furnace 20 can be performed smoothly by the recovery base 26. [

In the fourth embodiment and the fifth embodiment described above, in the case of corresponding to the level L4 in the introduction conveying path 39 ', the configuration as shown in Fig. 40 can be used.

In Fig. 40, the branch transfer platform 32 is supported through the sliding structure 43. Fig. 12, the ground supporting the sliding structure 43 is reinforced by a reinforcing steel material 34. [ On the upper surface of the branch transfer platform (32), an introduction table (38) is supported via a sliding structure (42). A new foundation 23 is formed on the upper surface of the introduction table 38 via a sliding structure 45 and a new furnace 20 including a new furnace body 21 and a new furnace pillar 22 is formed thereon do.

Here, the sliding surface (sliding structure 43) of the branch transfer platform 32 has the level L3 and the sliding surface (sliding structure 42) of the introduction base 38 has the level L2, (The sliding structure 45) can be made to the level L4.

(Industrial availability)

The present invention can be used as a method for repairing a blast furnace in which the removal of the old old furnace / old old furnace columns and the construction of the new furnace / new furnace columns are carried out in a short period of time.

10 ... It is a ... Old noche
12 ... Pillar of the Old Noche ... On-site basis
14 ... Base upper 15 ... Base bottom
20 ... Shin Goro 21 ... Shin Noche
22 ... Shin Noche Pillar 23 ... New foundation
26 ... Recovery Basics 30, 30A, 30B ... The withdrawal conveying device
30 '... The withdrawing conveying path 31 ... Drawbridge
32 ... Branch transfer platform 33 ... Concave portion
34 ... Steel for reinforcement 35 ... Supporting member
38 ... Introducing stand 39, 39B ... Transfer device for introduction
39 '... The introduction conveying path
41, 42, 43, 44, 45, 46 ... Sliding structure 50 ... Guide structure
51 ... Guide groove 52 ... Guide block
61 ... Intermediate stand 62 ... Branch stand
63 ... Building Stands 64, 65 ... Auxiliary stool
70 ... Towing device 71 ... Center ball jack
72 ... Wire 73 ... Reaction force water material
81 ... The fixed side sliding plate 82 ... Side sliding plate
83 ... Low Friction Lining 84 ... pad
85 ... Pad Liner 86 ... Base grout
91 ... Through hole 92 ... The guide member
93 ... Wire Saw 94 ... public
95 ... High Pack Anchor 96 ... rail
A1, A2 ... Axis B1 ... boundary
L1, L2, L3, L4 ... Level P1 ... Blast furnace installation place
P2 ... Shin Noche building place P3 ... Place to dismantle old city
S1 ... Operation of old blast furnace S2 ... New nose body building process
S3 ... Base division process S4 ... Stop Blowing
S5 ... Spherical body extraction process S6 ... New noche body introduction process
S7 ... New blast furnace operation S8 ... The former dismantling process
T1, T2, T3 ... Cutting compartment

Claims (8)

A method of repairing a furnace having a furnace body and a furnace body provided on a foundation of a furnace,
With the blast furnace operating,
A new furnace body building step of building a new foundation in a new furnace building site different from the above site foundation and building a new furnace body column and a new furnace body on the new base,
The foundation foundation is cut up and down to perform the foundation division step of dividing the foundation foundation and the foundation foundation,
After blowing the blast furnace,
A spheroid element drawing step of drawing the base upper part integrally with the spheroid element and the spheroid element column from the base lower imaginary plane,
And a new furnace body introducing step of introducing the new furnace integrally with the new noble body column and the new furnace body is performed on the foundation bottom. The method according to claim 1,
Wherein the recovery base is formed on the upper surface of the foundation under the new furnace body introduction step and the new foundation is introduced into the upper surface of the recovery base integrally with the new furnace body and the new furnace body. 3. The method of claim 2,
Wherein in the step of constructing the new furnace body, an introducing conveyance apparatus that extends linearly from the new furnace body building site to the site foundation is used,
Wherein the draw-out conveying device extending from the site foundation to the place where the new furnace building process is performed and extending in the cross direction from the direction changing position is used in the draw-
Wherein the introduction conveying device and the drawing conveying device each have a sliding structure using a solid lubricating low friction lining between a pair of sliding plates. The method of claim 3,
Wherein the drawing conveying device includes a first moving path extending from the site foundation toward a place where the new furnace body building step is performed, a second moving path extending in the cross direction from the middle of the first moving path, And a recessed portion formed on the ground along the second movement path and accommodating the branching movement platform, wherein the branching movement platform is movable along the second movement path,
Wherein the first movement path is formed between a sliding structure continuous from the upper surface of the drawing base to the upper surface of the lower portion of the base and the height of the sliding surface being set to the level L1 and between the lower surface of the drawing base and the ground, A sliding structure having a height of a sliding surface set to a level L2 and a sliding structure formed on an upper surface of the branch moving platform and having a height of a sliding surface set to the level L2,
The second movement path is formed between the lower surface of the branch transfer platform and the bottom surface of the concave portion and the height of the sliding surface is set to the level L3,
Wherein said introducing transport device comprises a third movement route extending from said new foundation toward said field foundation, an introduction carriage capable of moving said third movement route and supporting said new foundation, A supporting member provided in the recessed portion in the middle,
The third movement path is formed between the lower surface of the introduction base and the ground and is continuous to the vicinity of the bottom of the foundation via the upper surface of the support member and the height of the sliding surface is set to the level L2, A sliding structure formed between the upper surface of the introduction base and the lower surface of the new foundation and the height of the sliding surface being set to the level L4; and a sliding structure formed between the upper surface of the restoration foundation and the lower surface of the new foundation, The height of the surface is set to the level L4,
Wherein a height of a sliding surface of the sliding structure is a level L4> a level L1> a level L2> a level L3. The method of claim 3,
Wherein the drawing conveying device includes a first moving path extending from the site foundation toward a place where the new furnace body building step is performed, a second moving path extending in the cross direction from the middle of the first moving path, A withdrawable platform movable from the movement path to the second movement path,
Wherein the first movement path is formed between a sliding structure continuous from the upper surface of the drawing base to the upper surface of the lower portion of the base and the height of the sliding surface being set to the level L1 and between the lower surface of the drawing base and the ground, A sliding surface having a height of a sliding surface set to a level L2,
Wherein the second movement path is formed between the lower surface of the drawing base and the ground and is continuous in the direction intersecting with the sliding structure of the level 2 of the first movement path and the height of the sliding surface is set to the level L2 Structure,
Wherein said introducing transport device has a third movement route extending from said new basis toward said field foundation, and an introduction mount capable of moving said third movement route and supporting said new foundation,
The third movement path is formed between the lower surface of the introduction base and the ground and is continuous to the vicinity of the bottom of the foundation and the height of the sliding surface is set to the level L2; A sliding structure formed between the lower surface of the new base and the height of the sliding surface set to the level L4; and a sliding structure formed between the upper surface of the recovery base and the lower surface of the new base, Having a set sliding structure,
Wherein a height of a sliding surface of the sliding structure is a level L4> a level L1> a level L2. The method of claim 3,
Wherein the drawing conveying apparatus includes a first moving path extending from the site foundation toward a place where the new furnace body building step is performed, a second moving path extending in the cross direction from the middle of the first moving path, A branch platform installed on the ground along a movement path, a branch movement platform movable along the branch platform, and an intermediate mount connected to the field foundation and the branch base along the first movement path,
Wherein the first movement path has a sliding structure in which the upper surface of the branch transfer platform extends from the upper surface of the intermediate transfer base to the upper surface of the lower base and the height of the sliding surface is set to the level L1,
The second movement path is formed between the lower surface of the branch transfer platform and the upper surface of the branch base, and the height of the sliding surface is set to the level L3 '
Wherein said introducing transport device comprises: a third movement path extending from said new foundation toward said field foundation; a building platform supporting said new foundation; and a second platform extending from said branch base and said middle platform Which is provided with a support frame,
Wherein the third movement path is formed between the lower surface of the new foundation and the upper surface of the building platform and continues to the upper surface of the restoration foundation via the upper surface of the auxiliary platform and the height of the sliding surface reaches the level L4 Having a set sliding structure,
Wherein a height of a sliding surface of the sliding structure is a level L4> a level L1> a level L3 '. 7. The method according to any one of claims 3 to 6,
Wherein the guide conveying device has a guide groove continuous on the fixed side of the sliding structure in the carrying direction and engaging with the guide groove on the movable side, Wherein the first and second heat exchangers are installed in positions corresponding to the first and second heat exchangers. 8. The method according to any one of claims 3 to 7,
Wherein said introducing conveying device has a precision of 3 mm or less in horizontal error per m travel.

Images